Publications
| Title | Abstract | Year Filter | PMID(sorted descending) Filter |
|---|
| surveillance for tick-borne viruses near the location of a fatal human case of bourbon virus (family orthomyxoviridae: genus thogotovirus) in eastern kansas, 2015. | bourbon virus (family orthomyxoviridae: genus thogotovirus) was first isolated from a human case-patient residing in bourbon county, kansas, who subsequently died. before becoming ill in late spring of 2014, the patient reported several tick bites. in response, we initiated tick surveillance in bourbon county and adjacent southern linn county during spring and summer of 2015. we collected 20,639 host-seeking ticks representing four species from 12 sites. amblyomma americanum (l.) (acari: ixodida ... | 2018 | 29365128 |
| isolation of rickettsia amblyommatis in huvec line. | rickettsia amblyommatis, formerly named rickettsia amblyommii and 'candidatus rickettsia amblyommii' is an intracellular bacterium belonging to the spotted fever group rickettsia. it is highly prevalent in amblyomma americanum and in other amblyomma spp. throughout the western hemisphere. r. amblyommatis has been cultivated in chicken fibroblast, primary embryonated chicken eggs, vero cells and arthropod-derived cells. because of the affinity of rickettsiae to invade vascular endothelial cells, ... | 2018 | 29321939 |
| tick-host range adaptation: changes in protein profiles in unfed adult ixodes scapularis and amblyomma americanum saliva stimulated to feed on different hosts. | understanding the molecular basis of how ticks adapt to feed on different animal hosts is central to understanding tick and tick-borne disease (tbd) epidemiology. there is evidence that ticks differentially express specific sets of genes when stimulated to start feeding. this study was initiated to investigate if ticks such as ixodes scapularis and amblyomma americanum that are adapted to feed on multiple hosts utilized the same sets of proteins to prepare for feeding. we exposed i. scapularis a ... | 2017 | 29312895 |
| morphometric analysis of chemoreception organ in male and female ticks (acari: ixodidae). | the haller's organ plays a crucial role in a tick's ability to detect hosts. even though this sensory organ is vital to tick survival, the morphology of this organ is not well understood. the objective of this study was to characterize variation in the morphological components of the haller's organ of three medically important tick species using quantitative methods. the haller's organs of ixodes scapularis say (ixodida: ixodidae) (black-legged tick), amblyomma americanum (l.) (ixodida: ixodidae ... | 2017 | 29309667 |
| a survey of tick species in a recently reintroduced elk ( cervus elaphus canadensis) population in southeastern kentucky with potential implications for interstate translocation of zoonotic disease vectors. | in the late 20th century, elk ( cervus elaphus canadensis) were reintroduced into southeastern kentucky, us. this population has since been used as a stock population for additional elk reintroductions in other eastern states. although reintroduction and translocation practices are effective, they can disseminate vectors and pathogens. therefore, we surveyed tick species residing on elk hosts a decade after elk reintroduction in kentucky by examining 263 captured individuals (female=86; male=177 ... | 2017 | 29286258 |
| identification and characterization of proteins in the amblyomma americanum tick cement cone. | the adaptation of hard ticks to feed for long periods is facilitated by the cement cone, which securely anchors the tick mouthparts onto host skin and protects the tick from being groomed off by the host. thus, preventing tick cement deposition is an attractive target for the development of innovative tick control. we used lc-ms/ms sequencing to identify 160 amblyomma americanum tick cement proteins that include glycine-rich proteins (grp, 19%), protease inhibitors (12%), proteins of unknown fun ... | 2017 | 29258831 |
| evaluation of four commercial natural products for repellency and toxicity against the lone star tick, amblyomma americanum (acari: ixodidae). | lone star ticks are aggressive ectoparasites of domestic and wild animals, as well as humans. these ticks can transmit many pathogens that cause disease including erhlichia and tularemia. common compounds used for personal protection and area sprays are n-diethyl-3-methyl benzamide (deet) and permethrin, but public concern over personal and environmental safety require the development of new, safer products. in the current study, four commercially available products (wondercide, essentria ic3, v ... | 2017 | 29168105 |
| bourbon virus in field-collected ticks, missouri, usa. | bourbon virus (brbv) was first isolated in 2014 from a resident of bourbon county, kansas, usa, who died of the infection. in 2015, an ill payne county, oklahoma, resident tested positive for antibodies to brbv, before fully recovering. we retrospectively tested for brbv in 39,096 ticks from northwestern missouri, located 240 km from bourbon county, kansas. we detected brbv in 3 pools of amblyomma americanum (l.) ticks: 1 pool of male adults and 2 pools of nymphs. detection of brbv in a. america ... | 2017 | 29148395 |
| distribution and host associations of ixodid ticks collected from wildlife in florida, usa. | a tick survey was conducted to document tick-host associations with florida (usa) wildlife, and to determine the relative abundance and distribution of ixodid ticks throughout the state. the survey was conducted using collection kits distributed to licensed florida hunters as well as the examination of archived specimens from ongoing state wildlife research programs. collected tick samples were obtained from 66% of florida counties and were collected from nine wildlife hosts, including black bea ... | 2017 | 29110170 |
| laboratory evaluations of the immediate and sustained efficacy of lotilaner (credelio™) against four common species of ticks affecting dogs in north america. | effective control of tick infestations on dogs is important to reduce the risk of transmission of bacterial, viral, and protozoal pathogens. laboratory studies were initiated to determine the efficacy of lotilaner against common ticks infesting dogs in the united states. | 2017 | 29089057 |
| a tick-acquired red meat allergy: a case series. | allergic reaction is a common clinical picture in the emergency department (ed). most allergic reactions are from food or drugs. a detailed history is an integral aspect of determining the causative agent of an allergy. galactose-alpha-1,3-galactose (alpha-gal) allergy is a tick-acquired red meat allergy that causes delayed-onset allergic reaction or anaphylaxis due to molecular mimicry. alpha-gal allergy may not be widely known as a cause of allergic reactions. lack of universal awareness of th ... | 2017 | 29074067 |
| botanical compound p-anisaldehyde repels larval lone star tick (acari: ixodidae), and halts reproduction by gravid adults. | the lone star tick, amblyomma americanum (l.), widely distributed across eastern, southeastern, and midwestern regions of the united states and south into mexico, is an obligate blood feeder that attaches to three hosts during the larval, nymphal, and adult stages. white-tailed deer and wild turkey are common hosts, as well as a wide variety of other avian and mammalian hosts. amblyomma americanum is the most frequently reported species of tick to bite humans in the southeastern and southcentral ... | 2018 | 29029346 |
| transcriptional profiling of rickettsia prowazekii coding and non-coding transcripts during in vitro host-pathogen and vector-pathogen interactions. | natural pathogen transmission of rickettsia prowazekii, the etiologic agent of epidemic typhus, to humans is associated with arthropods, including human body lice, ticks, and ectoparasites of eastern flying squirrel. recently, we have documented the presence of small rnas in rickettsia species and expression of r. prowazekii srnas during infection of cultured human microvascular endothelial cells (hmecs), which represent the primary target cells during human infections. bacterial noncoding trans ... | 2017 | 28709615 |
| prevalence of babesia spp., ehrlichia spp., and tick infestations in oklahoma black bears (ursus americanus). | american black bears (ursus americanus) are commonly infested with ticks throughout their range, but there are few surveys for tick-borne disease agents in bears. to characterize tick infestations and determine the prevalence of current infection with babesia spp. and past or current infection with ehrlichia spp. in newly re-established populations of black bears in east central and southeastern oklahoma, we identified adult (n=1,048) and immature (n=107) ticks recovered from bears (n=62). we ev ... | 2017 | 28657860 |
| investigating the adult ixodid tick populations and their associated anaplasma, ehrlichia, and rickettsia bacteria at a rocky mountain spotted fever hotspot in western tennessee. | ehrlichiosis and rickettsiosis are two common bacterial tick-borne diseases in the southeastern united states. ehrlichiosis is caused by ehrlichiae transmitted by amblyomma americanum and rickettsiosis is caused by rickettsiae transmitted by amblyomma maculatum and dermacentor variabilis. these ticks are common and have overlapping distributions in the region. the objective of this study was to identify anaplasma, ehrlichia, and rickettsia species associated with questing ticks in a rocky mounta ... | 2017 | 28598270 |
| retrospective case reports of two central north carolina residents: frequency of tick bites and associated illnesses, 2001-2014. | background tick bites are a source of illness and disease agents that may lead to morbidity and occasional fatalities in north carolina. public health interest in tick-borne illness and disease has increased due to continuing discoveries of tick-borne diseases and their increasing geographic spread and disease incidence. there are no data published on lay individuals with cumulative tick bites and associated illnesses over a period of years.methods we learned of a married couple living on a cent ... | 2017 | 28576950 |
| involvement of invasive eastern red cedar (juniperus virginiana) in the expansion of amblyomma americanum in oklahoma. | 2017 | 28504442 | |
| prevalence of cytauxzoon felis infection in healthy free-roaming cats in north-central oklahoma and central iowa. | case summary cytauxzoonosis is a tick-borne disease of cats, and oklahoma (ok), usa, is considered an enzootic state. to determine the prevalence of cytauxzoon felis, blood was collected from free-roaming cats, as they are frequently exposed to tick vectors. our objective was to determine the prevalence of c felis infection in free-roaming cats in north-central oklahoma and central iowa (ia). infection with c felis was determined using dna extracted from blood and pcr amplification. blood was co ... | 2017 | 28491429 |
| response to the letter to the editor by rob armstrong. | in a recent letter to the editor, armstrong raises concern that the design of the study reported by six et al. was not consistent with the product label for treatment of amblyomma americanum, since fluralaner was not re-administered 56 days after the initial treatment. the authors disagree with this assessment and confirm that the design was appropriate, and therefore the results and conclusions for the entire study period are valid. | 2017 | 28446205 |
| vector competence of amblyomma americanum (acari: ixodidae) for rickettsia rickettsii. | rickettsia rickettsii - the etiologic agent of rocky mountain spotted fever (rmsf) - is widely spread across the americas. in the us, dermacentor spp. ticks are identified as primary vectors of r. rickettsii and rhipicephalus sanguineus s.l. has been implicated in transmission of this pathogen in several locations in the southwest. conversely, ticks of the genus amblyomma are recognized vectors of rmsf in central and south america, but not in the us. a. americanum is one of the most aggressive h ... | 2017 | 28433728 |
| ability of three general-use pesticides to suppress nymphal ixodes scapularis and amblyomma americanum (acari: ixodidae). | we evaluated 3 over-the-counter pesticides for their ability to suppress host-seeking ixodes scapularis and amblyomma americanum nymphs. we applied liquid concentrate and granular formulations of bayer advanced complete insect killer, spectracide triazicide insect killer, and ortho bug-b-gon to forest plots using equipment available for purchase at retail home improvement outlets. all 3 liquid formulations provided rapid knockdown (≥98% control) of both species 1 day after application. liquid or ... | 2017 | 28388324 |
| concurrent examination of bobcats and ticks reveals high prevalence of cytauxzoon felis in southern illinois. | cytauxzoon felis is an intraerythrocytic apicomplexan of felids enzootic in the southeastern united states. in domestic cats (felis catus), this parasite can result in the highly fatal disease cytauxzoonosis or bobcat fever. bobcats (lynx rufus) are the wild animal reservoir host. to date, the characterization of prevalence of c. felis in bobcats is mostly based on broad-scale surveys from hunter-harvested specimens collected across large geographic areas, usually consisting of multiple states. ... | 2017 | 28355128 |
| the conclusion of a comparative efficacy study of fluralaner and sarolaner against the tick amblyomma americanum on dogs is based on results obtained at study times that are outside the fluralaner label recommendations. | the only fluralaner-related conclusion presented in a study comparing the efficacy of fluralaner and sarolaner for control of the tick amblyomma americanum on dogs is based on study times that are outside the label administration recommendations. label recommendations for fluralaner treatment of a. americanum on dogs in the usa require re-administration at 56 days. this 56 day re-administration was not conducted in the study; therefore, all assessed time points following 56 days post-treatment i ... | 2017 | 28340604 |
| a repertoire of protease inhibitor families in amblyomma americanum and other tick species: inter-species comparative analyses. | protease inhibitors (pis) are important regulators of physiology and represent anti-parasitic druggable and vaccine targets. we conducted bioinformatic analyses of genome and transcriptome data to determine the protease inhibitor (pi) repertoire in amblyomma americanum and in 25 other ixodid tick species. for a. americanum, we compared the pi repertoires in fed and unfed, male and female a. americanum ticks. we also analyzed pi repertoires of female 48, 96 and 120 h-fed midgut (mg) and salivary ... | 2017 | 28330502 |
| what's eating you? lone star tick (amblyomma americanum). | amblyomma americanum, also known as the lone star tick, is found in much of the eastern united states. since the mid-20th century, the lone star tick has been implicated in human disease. today, a americanum remains an important vector for tick-borne illness. in addition to others, species of rickettsia, ehrlichia, and borrelia are all transmitted by the lone star tick. recently described conditions such as southern tick-associated rash illness and anaphylaxis to red meat following tick bites ha ... | 2017 | 28319627 |
| repellency of the origanum onites l. essential oil and constituents to the lone star tick and yellow fever mosquito. | the oregano, origanum onites l., essential oil (eo) was tested in laboratory behavioural bioassays for repellent activity against amblyomma americanum (l.) and aedes aegypti (l.). the o. onites eo was characterised using gc-fid and gc-ms. carvacrol (75.70%), linalool (9.0%), p-cymene (4.33%) and thymol (1.9%) were the most abundant compounds. at a concentration of 0.413 mg oil/cm(2) of filter paper, o. onites eo repelled 100% of the ticks tested and at 0.103 mg oil/cm(2) of filter paper, 66.7% o ... | 2017 | 28278656 |
| minimum transmission time of cytauxzoon felis by amblyomma americanum to domestic cats in relation to duration of infestation, and investigation of ingestion of infected ticks as a potential route of transmission. | objectives the objectives of the present study were to determine the duration of infestation by amblyomma americanum necessary for transmission of cytauxzoon felis to domestic cats and to determine if ingestion of c felis-infected a americanum by cats is a route of transmission. methods forty-nine cats were assigned to one of seven groups, with seven cats per group. cats were infested with a americanum adults, acquisition fed as nymphs on a cytauxzoonosis survivor cat, for 12 h (group 1), 18 h ( ... | 2017 | 28151047 |
| ixodes ricinus immunogenic saliva protein, homologue to amblyomma americanum av422: determining its potential for use in tick bite confirmation. | tick bites often go unnoticed, so specific reliable tests are needed to confirm them for prompt diagnosis and treatment of tick-borne diseases. one of the promising candidates for developing such a test is av422, a tick saliva protein that has been conserved across tick genera. in this study, we demonstrate the potential of the av422 homologue from ixodes ricinus to be used for tick bite detection for both prostriata and metastriata. we expressed recombinant (r) i. ricinus (ir) av422 in e. coli ... | 2017 | 28119040 |
| parasite infection of public databases: a data mining approach to identify apicomplexan contaminations in animal genome and transcriptome assemblies. | contaminations from various exogenous sources are a common problem in next-generation sequencing. another possible source of contaminating dna are endogenous parasites. on the one hand, undiscovered contaminations of animal sequence assemblies may lead to erroneous interpretation of data; on the other hand, when identified, parasite-derived sequences may provide a valuable source of information. | 2017 | 28103801 |
| molecular detection of rickettsia species in ticks collected from the southwestern provinces of the republic of korea. | rickettsiae constitute a group of arthropod-borne, gram-negative, obligate intracellular bacteria that are the causative agents of diseases ranging from mild to life threatening that impact on medical and veterinary health worldwide. | 2017 | 28069059 |
| occurrence of amblyomma americanum (acari: ixodidae) and human infection with ehrlichia chaffeensis in wisconsin, 2008-2015. | because of the increasing incidence of human ehrlichiosis in wisconsin, we assessed reports of human infections by ehrlichia chaffeensis and the distribution of its vector, the lone star tick (amblyomma americanum (l.)). from 2008 through 2015, 158 probable and confirmed human cases of e. chaffeensis infections were reported to the wisconsin department of health services. five cases without travel history outside of wisconsin were confirmed as e. chaffeensis by polymerase chain reaction. surveil ... | 2016 | 28011735 |
| longipin: an amyloid antimicrobial peptide from the harvestman acutisoma longipes (arachnida: opiliones) with preferential affinity for anionic vesicles. | in contrast to vertebrate immune systems, invertebrates lack an adaptive response and rely solely on innate immunity in which antimicrobial peptides (amps) play an essential role. most of them are membrane active molecules that are typically unstructured in solution and adopt secondary/tertiary structures upon binding to phospholipid bilayers. this work presents the first characterization of a constitutive amp from the hemolymph of an opiliones order animal: the harvestman acutisoma longipes. th ... | 2016 | 27997568 |
| tick-borne diseases in turkey: a review based on one health perspective. | the importance of tick-borne diseases is increasing all over the world, including turkey. global warming, environmental and ecological changes and the existence of suitable habitats increase the impact of ticks and result in frequent emergence or re-emergence of tick-borne diseases (tbds) with zoonotic characteristics. in turkey, almost 19 tbds have been reported in animals and men, involving four protozoa (babesiosis, theileriosis, cytauxzoonosis, hepatozoonosis), one filarial nematode (acantho ... | 2016 | 27977689 |
| use of a tick-borne disease manual increases accuracy of tick identification among primary care providers in lyme disease endemic areas. | given the high incidence of tick bites and tick-borne diseases in the united states, it is important for primary care providers to recognize common ticks and the pathogens they may transmit. if a patient has removed and saved an attached tick, identifying the tick helps guide clinical management and determine whether antibiotic prophylaxis for lyme disease is appropriate. to investigate providers' ability to recognize common ticks and the pathogens they may transmit, we asked 76 primary care pro ... | 2017 | 27916581 |
| gray wolf exposure to emerging vector-borne diseases in wisconsin with comparison to domestic dogs and humans. | world-wide concern over emerging vector-borne diseases has increased in recent years for both animal and human health. in the united sates, concern about vector-borne diseases in canines has focused on lyme disease, anaplasmosis, ehrlichiosis, and heartworm which infect domestic and wild canids. of these diseases, lyme and anaplasmosis are also frequently diagnosed in humans. gray wolves (canis lupus) recolonized wisconsin in the 1970s, and we evaluated their temporal and geographic patterns of ... | 2016 | 27898670 |
| food allergy to the carbohydrate galactose-alpha-1,3-galactose (alpha-gal): four case reports and a review. | until recently, food allergies to mammalian meats have been considered to be very rare. the observation that patients not previously exposed to the monoclonal chimeric antibody cetuximab suffered from severe anaphylaxis upon first exposure, led to the identification of galactose-alpha-1,3-galactose as a new relevant carbohydrate allergen. these patients later often suffered from anaphylactic reactions to red meat. epidemiological data indicated that bites by the tick amblyomma americanum in the ... | 2017 | 27873733 |
| vertebrate host susceptibility to heartland virus. | heartland virus (hrtv) is a recently described phlebovirus initially isolated in 2009 from 2 humans who had leukopenia and thrombocytopenia. serologic assessment of domestic and wild animal populations near the residence of 1 of these persons showed high exposure rates to raccoons, white-tailed deer, and horses. to our knowledge, no laboratory-based assessments of viremic potential of animals infected with hrtv have been performed. we experimentally inoculated several vertebrates (raccoons, goat ... | 0 | 27869591 |
| in vitro effect of seven essential oils on the reproduction of the cattle tick rhipicephalus microplus. | the acaricidal effect of seven essential oils was examined in vitro against the cattle tick (rhipicephalus microplus). engorged female ticks were manually collected in farms of southern brazil and placed into petri dishes (n = 10) in order to test the following oils: juniper (juniperus communis), palmarosa (cymbopogon martinii), cedar (cedrus atlantica), lemon grass (cymbopogon citratus), ginger (zingiber officinale), geranium (pelargonium graveolens) and bergamot (citrus aurantium var bergamia) ... | 2016 | 27857849 |
| the genome of the crustacean parhyale hawaiensis, a model for animal development, regeneration, immunity and lignocellulose digestion. | the amphipod crustacean parhyale hawaiensis is a blossoming model system for studies of developmental mechanisms and more recently regeneration. we have sequenced the genome allowing annotation of all key signaling pathways, transcription factors, and non-coding rnas that will enhance ongoing functional studies. parhyale is a member of the malacostraca clade, which includes crustacean food crop species. we analysed the immunity related genes of parhyale as an important comparative system for the ... | 2016 | 27849518 |
| heparan sulfate/heparin glycosaminoglycan binding alters inhibitory profile and enhances anticoagulant function of conserved amblyomma americanum tick saliva serpin 19. | some serine protease inhibitor (serpin) regulators of essential life pathways bind glycosaminoglycans (gags) to enhance inhibitory functions and achieve physiologically relevant rates. this study demonstrates that highly conserved amblyomma americanum tick saliva serpin 19 (aas19), a broad-spectrum inhibitor of hemostasis and inflammation system proteases and anticoagulant, can bind heparan sulfate/heparin (hs)gags and that this interaction alters its function. substrate hydrolysis and unpaired ... | 2017 | 27845251 |
| small regulatory rnas of rickettsia conorii. | small regulatory rnas comprise critically important modulators of gene expression in bacteria, yet very little is known about their prevalence and functions in rickettsia species. r. conorii, the causative agent of mediterranean spotted fever, is a tick-borne pathogen that primarily infects microvascular endothelium in humans. we have determined the transcriptional landscape of r. conorii during infection of human microvascular endothelial cells (hmecs) by strand-specific rna sequencing to ident ... | 2016 | 27834404 |
| antiplasmodial activity is an ancient and conserved feature of tick defensins. | ancestral sequence reconstruction has been widely used to test evolution-based hypotheses. the genome of the european tick vector, ixodes ricinus, encodes for defensin peptides with diverse antimicrobial activities against distantly related pathogens. these pathogens include fungi, gram-negative, and gram-positive bacteria, i.e., a wide antimicrobial spectrum. ticks do not transmit these pathogens, suggesting that these defensins may act against a wide range of microbes encountered by ticks duri ... | 2016 | 27822206 |
| risk of encountering ticks and tick-borne pathogens in a rapidly growing metropolitan area in the u.s. great plains. | the prevalence of tick-borne diseases has increased dramatically in many urban areas of the u.s., yet little is known about the ecology of ticks and tick-borne pathogens in relation to characteristics of north american urban and suburban landscapes. this study aimed to begin identification of the risk of encountering ticks and tick-borne pathogens within a rapidly expanding metropolitan area in the u.s. great plains region. ten sites across oklahoma city, oklahoma were selected for tick sampling ... | 2017 | 27773826 |
| brazilian borreliosis with special emphasis on humans and horses. | borreliosis caused by borrelia burgdorferi sensu lato is a cosmopolitan zoonosis studied worldwide; it is called lyme disease in many countries of the northern hemisphere and lyme-like or baggio-yoshinari syndrome in brazil. however, despite the increasing number of suspect cases, this disease is still neglected in brazil by the medical and veterinary communities. brazilian lyme-like borreliosis likely involves capybaras as reservoirs and amblyomma and rhipicephalus ticks as vectors. thus, domes ... | 2016 | 27769883 |
| coxiella detection in ticks from wildlife and livestock in malaysia. | recent studies have shown that ticks harbor coxiella-like bacteria, which are potentially tick-specific endosymbionts. we recently described the detection of coxiella-like bacteria and possibly coxiella burnetii in ticks found from rural areas in malaysia. in the present study, we collected ticks, including haemaphysalis bispinosa, haemaphysalis hystricis, dermacentor compactus, dermacentor steini, and amblyomma sp. from wildlife and domesticated goats from four different locations in malaysia. ... | 2016 | 27763821 |
| safety evaluation of parastar(®) plus in dogs and assessment of transferable residue of fipronil and cyphenothrin from dogs to humans. | dogs are easily infested with fleas, ticks, and other ectoparasites serving as vectors for transmitting bacterial, viral, and parasitic diseases. therefore, the use of ectoparasiticides is inevitable and important. the present investigation was undertaken with two specific objectives: one, to evaluate the safety of fipronil and cyphenothrin in dogs after topical application of parastar(®) plus, and two, to determine the transferable residue of these insecticides from dogs to humans. six healthy, ... | 2016 | 27747219 |
| identification, distribution and population dynamics of francisella-like endosymbiont in haemaphysalis doenitzi (acari: ixodidae). | francisella-like endosymbionts (fles) with significant homology to francisella tularensis (γ-proteobacteria) have been characterized in several tick species, whereas knowledge on their distribution and population dynamics in ticks remains meager. hence, in the current study, we identified a novel francisella-like endosymbiont (fles-hd) from the tick haemaphysalis doenitzi and evaluated the putative functions of this symbiont. results indicated that fles-hd had 100% infection rate and a perfect v ... | 2016 | 27731377 |
| amblyomma americanum ticks infected with in vitro cultured wild-type and mutants of ehrlichia chaffeensis are competent to produce infection in naïve deer and dogs. | monocytic ehrlichiosis in people caused by the intracellular bacterium, ehrlichia chaffeensis, is an emerging infectious disease transmitted by the lone star tick, amblyomma americanum. tick transmission disease models for ehrlichiosis require at least two hosts and two tick blood feeding episodes to recapitulate the natural transmission cycle. one blood feeding is necessary for the tick to acquire the infection from an infected host and the next feeding is needed to transmit the bacterium to a ... | 2017 | 27729288 |
| a review of piroplasmid infections in wild carnivores worldwide: importance for domestic animal health and wildlife conservation. | piroplasmids are tick-borne protozoan parasites that infect blood cells (erythrocytes, lymphocytes or other leukocytes) or endothelial cells of numerous wild and domestic vertebrates worldwide. they cause severe disease in livestock, dogs, cats, wild mammals and, occasionally, in humans. piroplasmid infections are prevalent in wild carnivores worldwide although there is limited information about their clinical and epidemiological importance. there are currently nine recognized species of babesia ... | 2016 | 27724937 |
| borrelia burgdorferi dna absent, multiple rickettsia spp. dna present in ticks collected from a teaching forest in north central florida. | tick-borne diseases are an emerging public health threat in the united states. in florida, there has been public attention directed towards the possibility of locally acquired borrelia burgdorferi sensu stricto, the causative agent of lyme disease, in association with the lone star tick. the aim of this study was to determine the prevalence of ticks and the pathogens they carry and potentially transmit, such as b. burgdorferi, in a highly utilized teaching and research forest in north central fl ... | 2017 | 27720381 |
| efficient enrichment of bacterial mrna from host-bacteria total rna samples. | despite numerous advances in genomics and bioinformatics, technological hurdles remain to examine host-microbe transcriptomics. sometimes the transcriptome of either or both can be ascertained merely by generating more sequencing reads. however, many cases exist where bacterial mrna needs to be enriched further to enable cost-effective sequencing of the pathogen or endosymbiont. while a suitable method is commercially available for mammalian samples of this type, development of such methods has ... | 2016 | 27713560 |
| ectoparasites of free-roaming domestic cats in the central united states. | free-roaming domestic cat (felis catus) populations serve as a valuable resource for studying ectoparasite prevalence. while they share a similar environment as owned cats, free-roaming cats do not receive routine veterinary care or ectoparasiticide application, giving insight into parasite risks for owned animals. we examined up to 673 infested cats presented to a trap-neuter-return (tnr) clinic in the central united states. ectoparasite prevalences on cats were as follows: fleas (71.6%), ticks ... | 2016 | 27692321 |
| virus discovery using tick cell lines. | while ticks have been known to harbor and transmit pathogenic arboviruses for over 80 years, the application of high-throughput sequencing technologies has revealed that ticks also appear to harbor a diverse range of endogenous tick-only viruses belonging to many different families. almost nothing is known about these viruses; indeed, it is unclear in most cases whether the identified viral sequences are derived from actual replication-competent viruses or from endogenous virus elements incorpor ... | 2016 | 27679414 |
| arbovirosis and potential transmission blocking vaccines. | infectious diseases caused by arboviruses (viruses transmitted by arthropods) are undergoing unprecedented epidemic activity and geographic expansion. with the recent introduction of west nile virus (1999), chikungunya virus (2013) and zika virus (2015) to the americas, stopping or even preventing the expansion of viruses into susceptible populations is an increasing concern. with a few exceptions, available vaccines protecting against arboviral infections are nonexistent and current disease pre ... | 2016 | 27664127 |
| the red meat allergy syndrome in sweden. | in the last decade, a novel type of food allergy presenting with severe allergic reactions several hours after consumption of red meat has been recognized. the allergic responses are due to ige antibodies directed against the carbohydrate epitope galactose-α-1,3-galactose (α-gal) found in mammalian meat. this review presents the red meat allergy syndrome in sweden, discusses the features of the immune response to carbohydrates, and highlights the presence of heat stable α-gal-containing proteins ... | 2016 | 27656352 |
| manual for maintenance of multi-host ixodid ticks in the laboratory. | use of laboratory animals as hosts for blood-sucking arthropods remains a time-proven and the most efficient method for establishment and propagation of slowly feeding ixodid ticks, despite introduction of techniques involving artificial feeding on either animal skins or synthetic membranes. new zealand white rabbits are usually the most accessible and most suitable hosts routinely used for establishment and maintenance of a large variety of multi-host tick species. here we describe standard pro ... | 2016 | 27651325 |
| rickettsia amblyommatis sp. nov., a spotted fever group rickettsia associated with multiple species of amblyomma ticks in north, central and south america. | in 1973, investigators isolated a rickettsial organism, designated strain wb-8-2t, from an adult amblyomma americanum tick collected at land between the lakes national recreation area, tn, usa. this organism is now recognized as highly prevalent in a. americanum, as well as several other amblyomma species found throughout the western hemisphere. it has been suggested that cross-reactivity to wb-8-2t and similar strains contributes to the increasing number of spotted fever cases reported in the u ... | 2016 | 27638476 |
| use of extracorporeal support in hemophagocytic lymphohistiocytosis secondary to ehrlichiosis. | ehrlichiosis, caused by transmission of ehrlichia chaffeensis to humans through the bite of an infected lone star tick, can lead to secondary hemophagocytic lymphohistiocytosis (hlh), a life-threatening condition caused by uncontrolled activation of the cellular immune system. we describe a child with hlh secondary to ehrlichiosis who developed multiorgan failure and was successfully managed with extracorporeal membrane oxygenation (ecmo). a 9-year-old boy developed headaches, fever, and sore th ... | 2016 | 27633921 |
| emerging tick-borne rickettsia and ehrlichia at joint base langley-eustis, fort eustis, virginia. | four species of ticks known to parasitize humans (amblyomma americanum (lone star tick), dermacentor variabilis (american dog tick), amblyomma maculatum (gulf coast tick), and ixodes scapularis (black-legged tick)) were collected at joint base langley-eustis, fort eustis, virginia during 2009. these ticks were tested individually (adults and nymphs) and in pools of 15 (larvae) for pathogens of public health importance within the genera: rickettsia, borrelia, and ehrlichia, by quantitative real-t ... | 2016 | 27613206 |
| not all erythema migrans lesions are lyme disease. | lyme disease is the number one arthropod-transmitted disease in the us, and one of the diagnostic criteria for the illness is development of an erythematous bull's-eye rash around a tick bite that may expand over time, hence the term erythema migrans. however, there are other erythema migrans-like rashes, such as those from a condition known as southern tick-associated rash illness. this article describes a patient with an erythema migrans-like lesion similar to that associated with lyme disease ... | 2017 | 27612442 |
| bunyaviruses are common in male and female ixodes scapularis ticks in central pennsylvania. | the blacklegged tick ixodes scapularis is widely distributed in the united states and transmits multiple pathogens to humans, wildlife and domestic animals. recently, several novel viruses in the family bunyaviridae (south bay virus (sbv) and blacklegged tick phlebovirus (btpv)) were identified infecting female i. scapularis ticks collected in new york state. we used metagenomic sequencing to investigate the distribution of viruses infecting male and female i. scapularis ticks collected in centr ... | 2016 | 27602290 |
| coxiella symbionts are widespread into hard ticks. | ticks are blood-feeding arthropods and can harbor several bacteria, including the worldwide zoonotic disease q-fever agent coxiella burnetii. recent studies have reported a distinct group of coxiella mostly associated with ixodidae ticks, including the primary endosymbionts of amblyomma americanum. in the present work, a screening for coxiella infection was performed by 16s ribosomal dna (rdna) gene analyses in 293 tick samples of 15 different species sampled worldwide, including brazil, colombi ... | 2016 | 27595990 |
| the intracellular bacterium anaplasma phagocytophilum selectively manipulates the levels of vertebrate host proteins in the tick vector ixodes scapularis. | the intracellular bacteria anaplasma phagocytophilum are emerging zoonotic pathogens affecting human and animal health, and a good model for the study of tick-host-pathogen interactions. this tick-borne pathogen is transmitted by ixodes scapularis in the united states where it causes human granulocytic anaplasmosis. tick midguts and salivary glands play a major role during tick feeding and development, and in pathogen acquisition, multiplication and transmission. vertebrate host proteins are fou ... | 2016 | 27561965 |
| male tarsi specific odorant-binding proteins in the diving beetle cybister japonicus sharp. | odorant binding proteins (obps) play critical roles in chemical communication of insects, as they recognize and transport environmental chemical signals to receptors. the diving beetle cybister japonicus sharp shows a remarkable sexual dimorphism. the foreleg tarsi of males are equipped with large suction cups, believed to help holding the female during underwater courtship and mating. here, we identified two obps highly and specifically expressed in male tarsi, suggesting important functions of ... | 2016 | 27545810 |
| molecular diagnosis and genetic diversity of tick-borne anaplasmataceae agents infecting the african buffalo syncerus caffer from marromeu reserve in mozambique. | tick-borne diseases (tbds) are very important in relation to domestic ruminants, but their occurrence among wild ruminants, mainly in the african buffalo syncerus caffer, remains little known. | 2016 | 27531003 |
| ecology of tularemia in central us endemic region. | tularemia is a zoonotic disease that occurs in the northern hemisphere caused by the gammabacterium francisella tularensis. the most severe form of human tularemia occurs in the central usa and involves a rabbit enzootic cycle, ixodid tick vectors, and f. tularensis subspecies tularensis genotype a1. enzootic tularemia is thought to have a spring-summer seasonality corresponding to the questing activity of its primary tick vectors. domestic cats, another common incidental host, acquire the infec ... | 2016 | 27525215 |
| new records of ticks (acari: ixodidae) from dogs, cats, humans, and some wild vertebrates in alaska: invasion potential. | during 2010-2016, tick specimens were solicited from veterinarians, biologists, and members of the public in alaska. eight species of ticks were recorded from domestic dogs. some ticks were collected from dogs with recent travel histories to other countries or other u.s. states, which appears to explain records of ticks not native to alaska such as amblyomma americanum (l.) (lone star tick), ixodes scapularis (say) (blacklegged tick), and ixodes ricinus (l.). however, we recorded dermacentor var ... | 2016 | 27524823 |
| saliva of rhipicephalus (boophilus) microplus (acari: ixodidae) inhibits classical and alternative complement pathways. | rhipicephalus (boophilus) microplus is the main ectoparasite affecting livestock worldwide. for a successful parasitism, ticks need to evade several immune responses of their hosts, including the activation of the complement system. in spite of the importance of r. microplus, previous work only identified one salivary molecule that blocks the complement system. the current study describes complement inhibitory activities induced by r. microplus salivary components and mechanisms elicited by puta ... | 2016 | 27515662 |
| systemically and cutaneously distributed ectoparasiticides: a review of the efficacy against ticks and fleas on dogs. | acaricidal (tick) and insecticidal (flea) efficacy of systemically and cutaneously distributed ectoparasiticide products for dogs are compared based on permethrin and fluralaner as representative molecules. results of efficacy studies against fleas and ticks are reviewed that show generally good to excellent results. both externally and systemically distributed treatments have benefits and weaknesses in potentially preventing pathogen transmission by these arthropod vectors.four general properti ... | 2016 | 27502490 |
| unique strain of borrelia miyamotoi in ixodes pacificus ticks, california, usa. | 2016 | 27479523 | |
| is the antitumor property of trypanosoma cruzi infection mediated by its calreticulin? | eight to 10 million people in 21 endemic countries are infected with trypanosoma cruzi. however, only 30% of those infected develop symptoms of chagas' disease, a chronic, neglected tropical disease worldwide. similar to other pathogens, t. cruzi has evolved to resist the host immune response. studies, performed 80 years ago in the soviet union, proposed that t. cruzi infects tumor cells with similar capacity to that displayed for target tissues such as cardiac, aortic, or digestive. an antagoni ... | 2016 | 27462315 |
| heterogeneous associations of ecological attributes with tick-borne rickettsial pathogens in a periurban landscape. | the variations in prevalence levels of two tick-borne rickettsial pathogens, ehrlichia chaffeensis and ehrlichia ewingii, in a periurban environment were evaluated along with their ecological determinants. tick life stage and sex, month of tick collection, landscape fragmentation, and ecological covariates specific to pasture and woodland sites were considered as explanatory covariates. questing lone star ticks (amblyomma americanum) were collected by flagging for an hour once every week during ... | 2016 | 27454144 |
| comparative speed of kill of sarolaner (simparica™ chewables) and fluralaner (bravecto(®)) against induced infestations of amblyomma americanum on dogs. | the lone star tick, amblyomma americanum, infests dogs and cats in north america and transmits the pathogens ehrlichia chaffeensis and ehrlichia ewingii, which cause monocytic and granulocytic ehrlichiosis in dogs and humans, and cytauxzoon felis which causes cytauxzoonosis in cats. a parasiticide's speed of kill is important to minimize the direct deleterious effects [related to blood-feeding] of tick infestation and reduce the risk of transmission of tick-borne pathogens. in this study the spe ... | 2016 | 27430425 |
| repellency to ticks (acari: ixodidae) of extracts of nigella sativa (ranunculaceae) and the anti-inflammatory dogsbestfriend™. | motivated by observations that the canine anti-inflammatory cream dogsbestfriend™ (dbf) appeared to deter flies, mosquitoes, and ticks from treated animals, repellent efficacy bioassays using four species of ticks were conducted with three extracts of nigella sativa l. (ranunculaceae), a constituent of dbf. the dbf cream was tested against nymphs of lone star tick, amblyomma americanum (l.). in vertical filter paper assays, the three extracts applied at 0.413 mg extract/cm(2) filter paper repell ... | 2016 | 27394440 |
| evasins: therapeutic potential of a new family of chemokine-binding proteins from ticks. | blood-sucking parasites, such as ticks, remain attached to their hosts for relatively long periods of time in order to obtain their blood meal without eliciting an immune response. one mechanism used to avoid rejection is the inhibition of the recruitment of immune cells, which can be achieved by a class of chemokine-binding proteins (ckbps) known as evasins. we have identified three distinct evasins produced by the salivary glands of the common brown dog tick, rhipicephalus sanguineus. they dis ... | 2016 | 27375615 |
| seroprevalence of borrelia burgdorferi antibodies in white-tailed deer from texas. | lyme disease is caused by the bacterial pathogen borrelia burgdorferi, and is transmitted by the tick-vector ixodes scapularis. it is the most prevalent arthropod-borne disease in the united states. to determine the seroprevalence of b. burgdorferi antibodies in white-tailed deer (odocoileus virginianus) from texas, we analyzed serum samples (n = 1493) collected during the 2001-2015 hunting seasons, using indirect elisa. samples with higher sero-reactivity (0.803 and above) than the negative con ... | 2016 | 27366674 |
| morphologic and molecular characterization of a demodex (acari: demodicidae) species from white-tailed deer (odocoileus virginianus). | demodex mites, although usually nonpathogenic, can cause a wide range of dermatological lesions ranging from mild skin irritation and alopecia to severe furunculosis. recently, a case of demodicosis from a white-tailed deer (odocoileus virginianus) revealed a demodex species morphologically distinct from demodex odocoilei. all life cycle stages were considerably larger than d. odocoilei and although similar in size to d. kutzeri and d. acutipes from european cervids, numerous morphometrics disti ... | 2013 | 27335854 |
| neuronal projections from the haller's organ and palp sensilla to the synganglion of amblyomma americanum§. | the present study was conducted to elucidate the neuronal pathways between peripheral olfactory and taste sensilla and the synganglion in an ixodidae tick species. the tarsus of the front legs (olfactory nerves) and the fourth palpal segment (gustatory nerves) of unfed amblyomma americanum males and females were excised. a neuronal tracer, dextran tetramethylrhodamine, was used for filling of the sensory neurons. the synganglion preparations were examined using a confocal microscope. neuronal ar ... | 2016 | 27334823 |
| transmission of heartland virus (bunyaviridae: phlebovirus) by experimentally infected amblyomma americanum (acari: ixodidae). | heartland virus (hrtv; bunyaviridae: phlebovirus) is a recently described cause of human illness in the united states. after field studies conducted in 2012 implicated amblyomma americanum (l.) as a vector of hrtv, we initiated experiments to assess the vector competence of a. americanum larval and nymphal ticks were immersed in high-titered suspensions of hrtv, and then tested for virus at various intervals postimmersion. in a later trial larval ticks were immersed in hrtv, followed by engorgem ... | 2016 | 27330103 |
| the chemosensory appendage proteome of amblyomma americanum (acari: ixodidae) reveals putative odorant-binding and other chemoreception-related proteins. | proteomic analyses were done on 2 chemosensory appendages of the lone star tick, amblyomma americanum. proteins in the fore tarsi, which contain the olfactory haller's organ, and in the palps, that include gustatory sensilla, were compared with proteins in the third tarsi. also, male and female ticks were compared. proteins were identified by sequence similarity to known proteins, and by 3-dimensional homology modeling. proteomic data were also compared with organ-specific transcriptomes from th ... | 2016 | 27307202 |
| neuronal projections from the haller's organ and palp sensilla to the synganglion of amblyomma americanum§. | the present study was conducted to elucidate the neuronal pathways between peripheral olfactory and taste sensilla and the synganglion in an ixodidae tick species. the tarsus of the front legs (olfactory nerves) and the fourth palpal segment (gustatory nerves) of unfed amblyomma americanum males and females were excised. a neuronal tracer, dextran tetramethylrhodamine, was used for filling of the sensory neurons. the synganglion preparations were examined using a confocal microscope. neuronal ar ... | 2016 | 27304521 |
| hacker within! ehrlichia chaffeensis effector driven phagocyte reprogramming strategy. | ehrlichia chaffeensis is a small, gram negative, obligately intracellular bacterium that preferentially infects mononuclear phagocytes. it is the etiologic agent of human monocytotropic ehrlichiosis (hme), an emerging life-threatening tick-borne zoonosis. mechanisms by which e. chaffeensis establishes intracellular infection, and avoids host defenses are not well understood, but involve functionally relevant host-pathogen interactions associated with tandem and ankyrin repeat effector proteins. ... | 2016 | 27303657 |
| novel borrelia species detected in echidna ticks, bothriocroton concolor, in australia. | to date, little has been documented about microorganisms harboured within australian native ticks or their pathogenic potential. recently, a borrelia sp. related to the relapsing fever (rf) group was identified in a single tick removed from a wild echidna (tachyglossus aculeatus). the present study investigated the presence of borrelia in 97 bothriocroton concolor ticks parasitizing echidnas in queensland, new south wales, and victoria, australia, using nested pcr with borrelia-specific primers ... | 2016 | 27301754 |
| passive surveillance of ixodes scapularis (say), their biting activity, and associated pathogens in massachusetts. | a passive surveillance of tick-borne pathogens was conducted over a 7-year period (2006-2012), in which a total of 3551 ticks were submitted to the university of massachusetts for pcr testing. the vast majority of these ticks were ixodes scapularis from massachusetts (n = 2088) and hence were the focus of further analysis. two taqman duplex qpcr assays were developed to test i. scapularis ticks for the presence of three human pathogens: borrelia burgdorferi, anaplasma phagocytophilum, and babesi ... | 2016 | 27248292 |
| isolation and short-term persistence of ehrlichia ewingii in cell culture. | ehrlichia ewingii is the causative agent of human and canine granulocytic ehrlichiosis. since its discovery in 1970, little work has been done to characterize the pathogen or study the transmission dynamics due to the inability to grow the agent in vitro. the aim of this study was to assess the suitability of multiple cell lines and media formulations for propagation of e. ewingii in cell culture. in this study, we present an overview of attempts to isolate e. ewingii from the buffy coat of goat ... | 2016 | 27228133 |
| prevalence of the lyme disease spirochete, borrelia burgdorferi, in blacklegged ticks, ixodes scapularis at hamilton-wentworth, ontario. | lyme disease has emerged as a major health concern in canada, where the etiological agent, borrelia burgdorferi sensu lato (s.l.), a spirochetal bacterium, is typically spread by the bite of certain ticks. this study explores the presence of b. burgdorferi s.l. in blacklegged ticks, ixodes scapularis, collected at dundas, ontario (a locality within the region of hamilton-wentworth). using passive surveillance, veterinarians and pet groomers were asked to collect blacklegged ticks from dogs and c ... | 2016 | 27226771 |
| detection of borrelia burgdorferi sensu stricto in amblyomma americanum ticks in the southeastern united states: the case of selective compatibility. | 2016 | 27222323 | |
| rickettsia parkeri colonization in amblyomma maculatum: the role of superoxide dismutases. | the gulf coast tick (amblyomma maculatum) is an arthropod vector of rickettsia parkeri, the causative agent of american boutonneuse fever and an infectious agent of public health significance. in this study, we evaluated the biological significance of the superoxide dismutases (sods) of a. maculatum in hematophagy and r. parkeri colonization within the tick host. | 2016 | 27206371 |
| population and evolutionary genomics of amblyomma americanum, an expanding arthropod disease vector. | the lone star tick, amblyomma americanum, is an important disease vector and the most frequent tick found attached to humans in the eastern united states. the lone star tick has recently experienced a rapid range expansion into the northeast and midwest, but despite this emerging infectious threat to wildlife, livestock, and human health, little is known about the genetic causes and consequences of the geographic expansion. in the first population genomic analysis of any tick species, we charact ... | 2016 | 27190204 |
| first report of cytauxzoon sp. infection in a domestic cat from portugal. | cytauxzoonosis is an emerging and life-threatening tick-borne feline disease caused by haemoprotozoan parasites of the genus cytauxzoon. information regarding epidemiological and clinical presentation of infections by species other than cytauxzoon felis is scant. a case of cytauxzoon sp. infection is described in a 2-year-old mixed breed male domestic cat from portugal, presenting a history of acute lethargy, anorexia and pyrexia. | 2016 | 27160193 |
| correction: the microbiome of ehrlichia-infected and uninfected lone star ticks (amblyomma americanum). | [this corrects the article doi: 10.1371/journal.pone.0146651.]. | 2016 | 27158898 |
| disease vectors in the era of next generation sequencing. | almost 20 % of all infectious human diseases are vector borne and, together, are responsible for over one million deaths per annum. over the past decade, the decreasing costs of massively parallel sequencing technologies have facilitated the agnostic interrogation of insect vector genomes, giving medical entomologists access to an ever-expanding volume of high-quality genomic and transcriptomic data. in this review, we highlight how genomics resources have provided new insights into the physiolo ... | 2016 | 27154554 |
| detection of borrelia, ehrlichia, and rickettsia spp. in ticks in northeast missouri. | we evaluated amblyomma americanum (lone star tick) and dermacentor variabilis (american dog tick) in northeast missouri for the presence of borrelia, ehrlichia, and rickettsia bacteria. we collected actively questing ticks from four sites within adair county, missouri. a total of 15,162 ticks were collected, of which 13,980 were grouped in 308 pools (lone star ticks, 288 pools; american dog ticks, 20 pools) and tested for presence/absence of bacteria using polymerase chain reaction. infection ra ... | 2016 | 27133163 |
| structural characterization of tick cement cones collected from in vivo and artificial membrane blood-fed lone star ticks (amblyomma americanum). | the lone star tick, amblyomma americanum, is endemic to the southeastern united states and capable of transmitting pathogenic diseases and causing non-pathogenic conditions. to remain firmly attached to the host, the tick secretes a proteinaceous matrix termed the cement cone which hardens around the tick's mouthparts to assist in the attachment of the tick as well as to protect the mouthparts from the host immune system. cement cones collected from ticks on a host are commonly contaminated with ... | 2016 | 27118479 |
| prevalence of tick-borne pathogens in host-seeking amblyomma americanum (acari: ixodidae) and odocoileus virginianus (artiodactyla: cervidae) in florida. | amblyomma americanum (l.), the lone star tick, is an aggressive tick that is expanding its geographic range within the united states. this tick is the vector for the human and veterinary pathogens ehrlichia chaffeensis and ehrlichia ewingii and is associated with other microbes of unspecified pathogenicity including rickettsia amblyommii, panola mountain ehrlichia, and borrelia lonestari in florida, there has been sparse contemporary data on the prevalence of these organisms in host-seeking lone ... | 2016 | 27117680 |
| erratum for stromdahl et al., borrelia burgdorferi not confirmed in human-biting amblyomma americanum ticks from the southeastern united states. | 2016 | 27114565 | |
| thermacell and off! clip-on devices tested for repellency and mortality against amblyomma americanum (acari: ixodida: amblyommidae). | the thermacell with allethrin and off! clip-on with metofluthrin were tested in a 939 m(2) vented enclosure against nymphal lone star ticks, amblyomma americanum (l.). repellency assays were conducted at varying distances relative to product specifications for repellency range. nymphal ticks acclimated for 24 h in chambers attached to 10 repellency tracks per repetition. devices were turned on, and the tick travel distance and delay until beginning to travel were recorded. mortality of ticks was ... | 2016 | 27113108 |
| expanded geographic distribution and clinical characteristics of ehrlichia ewingii infections, united states. | ehrlichiosis is a bacterial zoonosis, spread through the bites of infected ticks, that is most commonly caused in the united states by infection with the bacterium ehrlichia chaffeensis. we retrospectively reviewed samples from an 18-month study of ehrlichiosis in the united states and found that e. ewingii was present in 10 (9.2%) of 109 case-patients with ehrlichiosis, a higher rate of infection with this species than had previously been reported. two patients resided in new jersey and indiana ... | 2016 | 27089171 |
| fatal monocytic ehrlichiosis in woman, mexico, 2013. | human monocytic ehrlichiosis is a febrile illness caused by ehrlichia chaffeensis, an intracellular bacterium transmitted by ticks. in mexico, a case of e. chaffeensis infection in an immunocompetent 31-year-old woman without recognized tick bite was fatal. this diagnosis should be considered for patients with fever, leukopenia, thrombocytopenia, and elevated liver enzyme levels. | 0 | 27088220 |
| partial characterization of a novel anti-inflammatory protein from salivary gland extract of hyalomma anatolicum anatolicum 77acari: ixodidae) ticks. | hyalomma anatolicum anatolicum ticks transmit theileria annulata, causative agent of tropical theileriosis to cattle and buffaloes causing a major economic loss in terms of production and mortality in tropical countries. ticks have evolved several immune evading strategies to circumvent hosts' rejection and achieve engorgement. successful feeding of ticks relies on a pharmacy of chemicals located in their complex salivary glands and secreted saliva. these chemicals in saliva could inhibit host i ... | 2015 | 27065646 |