| [acari of food storage facilities. an ecologic and immuno-allergic study]. | the authors studied the commonest species of storage mites, living in granaries and in house dust. they found nine species of mites belonging to different systematic groups and were identified: acarus siro, tyrophagus putrescentiae, glycyphagus domesticus, lepidoglyphus destructor, chortoglyphus arcuatus, androlaelaps casalis, cheyletus fortis, cheyletus tenuipilis, thyreophagus entomophagus. skin tests were performed on 14 patients with house dust allergy, using extracts of three storage mites, ... | 1985 | 3837918 |
| mite allergy in the tropics: sensitization to six domestic mite species in cartagena, colombia. | sensitization to the domestic mites blomia tropicalis, chortoglyphus arcuatus, lepidoglyphus destructor and aleuroglyphus ovatus was investigated in 77 subjects with clinical symptoms of asthma and/or allergic rhinitis and a positive skin prick test (wheal > or = 3 mm) to dermatophagoides pteronyssinus and/or d. farinae. seventy patients were skin test-positive to d. pteronyssinus and 73 to d. farinae. serum samples from 29 nonallergic, skin test-negative individuals were used as negative contro ... | 1993 | 8281353 |
| house dust mites in switzerland. iii. allergenic properties of the mites. | the allergenic properties of the nine mite species prevalent in the house dust of northwestern switzerland (basel and surroundings) were studies. for the preparation of mite extracts, the average weight of each species was first determined and then the number per culture glass counted. thus the extracts were prepared according to the weight of the mites. they were tested on 115 patients with ashma and/or rhinitis. tests with patients own house dust and with a human dander/yeast mixture, which s ... | 1977 | 579046 |
| [immunologic investigations of house-dust and house-dust mites. i. schultz-dale test (author's transl)]. | with dermatophagoides pteronyssinus and house-dust sensitized guinea-pigs showed cross-reactions between house-dust, d. pteronyssinus and d. farinae in the schultz-dale test. euroglyphus maynei gave positive reactions only in animals sensitized with d. pteronyssinus. the stored food mites tyrophagus putrescentiae, chortoglyphus arcuatus and glycyphagus destructor and the rearing medium (horse dander/yeast) did not cause any cross-reactions in any test group. | 1977 | 145169 |
| cloning and characterization of tropomyosin from the mite chortoglyphus arcuatus. | tropomyosin is a pan-allergen that shares a high homology among species. it is involved in cross-reactivity among mites, crustaceans, mollusks and insects. the objectives were to express and purify recombinant tropomyosin from the storage mite chortoglyphus arcuatus, and to investigate the homology and cross-reactivity with tropomyosin from other invertebrates. recombinant c. arcuatus tropomyosin (r-cho a 10) was selected from a library by screening with a pool of patient sera. r-cho a 10 (unipr ... | 2015 | 26522591 |
| Seasonal Dynamics of House Dust Mites in Dust Samples Collected From Sleeping Places in North-Western Poland. | The most common families of mites found in house dust are Pyroglyphidae, Glycyphagidae and Acaridae; all are a source of many antigens responsible for allergic diseases. The aim of this study was to examine the seasonal dynamics of allergenic mite populations in dust samples collected from sleeping places in apartments in north-western Poland. The mites were isolated from the dust using a saturated saline floating method. In 132 dust samples we determined: Dermatophagoides farinae, Dermatophagoi ... | 2011 | 21824362 |
| [acarological faunistic and statistical analysis of dust from various compartments of human dwellings in north-western poland]. | the aim of this paper was to compare the species composition of mites in dust samples collected at different compartments of human dwellings of north-western (nw) poland. in 30 urban apartments (szczecin, police, pyrzyce and łobez) and rural quarters (przelewice, brzesko szczecińskie, bylice, krasne, kakolewice, wierzchowo, przeradz, kłodzino) from nw poland, 150 samples of dust were collected at 5 locations: bed area, bedroom carpet, sitting area in the living room, hall carpet, and kitchen flo ... | 2010 | 20450008 |
| the importance of starch and sucrose digestion in nutritive biology of synanthropic acaridid mites: alpha-amylases and alpha-glucosidases are suitable targets for inhibitor-based strategies of mite control. | the adaptation of nine species of mites that infest stored products for starch utilization was tested by (1) enzymatic analysis using feces and whole mite extracts, (2) biotests, and (3) inhibition experiments. acarus siro, aleuroglyphus ovatus, and tyroborus lini were associated with the starch-type substrates and maltose, with higher enzymatic activities observed in whole mite extracts. lepidoglyphus destructor was associated with the same substrates but had higher activities in feces. dermato ... | 2009 | 19480003 |
| morphological diagnosis of the eggs of stored-products mites. | eggs of 13 species of common, economically important stored-product pest mites (acarus siro, a. gracilis, tyrophagus putrescentiae, t. brevicrinatus, tyroborus lini, aleuroglyphus ovatus, caloglyphus redikorzevi, c. oudemansi, lepidoglyphus destructor, glycyphagus domesticus, aeroglyphus robustus, chortoglyphus arcuatus and carpoglyphus lactis) from four families (acaridae, glycyphagidae, chortoglyphidae, carpoglyphidae) were studied in order to build a diagnostic key. the morphological study de ... | 2009 | 19252823 |
| [determination of house dust mites in eskisehir]. | house dust contains various organic and inorganic materials. the most important parts of the house dust are dust mites causing allergic diseases such as allergic rhinitis, asthma, atopic dermatitis and seasonal keratoconjunctivitis. in this study, a total of 72 random house dust samples collected from various regions of eskisehir were examined. the dust samples were examined by the lactic acid precipitation method which was modified from the spieksma-boezaman's method. the mite positive house du ... | 2008 | 18645945 |
| digestive function of lysozyme in synanthropic acaridid mites enables utilization of bacteria as a food source. | the activity of lysozyme, the enzyme that hydrolyzes peptidoglycan in g(+) bacterial cell walls, was detected in whole mite extracts (wme) and in spent growth medium extracts (sgme) of 14 species of synanthropic mites (acari: acaridida). the adaptation of lysozyme for digestive activity and bacteriophagy was based on: (i) high lysozyme activity in sgme, and (ii) the correlation of maximum lysozyme activity at acidic ph values, corresponding to ph in the ventriculus and caeca. we show that the di ... | 2008 | 18357505 |
| house dust and storage mite extracts influence skin keratinocyte and fibroblast function. | the bodies of allergy-causing dust and storage mites likely contain many bioreactive molecules, including some that are allergenic. these molecules may penetrate the epidermis and dermis of the skin. however, little is known about the effects that most of the molecules from mites have on the function of cells in the skin, the overall inflammatory and immune reactions and the manifestation of allergic disease. the purpose of this research was to determine the response of cultured skin cells (kera ... | 2008 | 17703098 |
| enzymatic activity in extracts of allergy-causing astigmatid mites. | many of the previously characterized allergens of house dust mites are known to be proteases, and this enzymatic activity is thought to contribute to their allergenicity. other astigmatid mites, including stored-product mites and the ectoparasitic itch mite, sarcoptes scabiei de geer, are also known to be allergenic, but little or nothing is known about their enzymatic activities. the purpose of this study was to characterize the enzymatic activities present in extracts of the parasitic itch mit ... | 2006 | 17162954 |
| [studies on the mites(order acarina) in korea: i. suborder sarcoptiformes] | acarid mites were isolated from samples collected in seoul during the period of october 1975 to august 1978. samples consisted of stored foods such as rice, flour, sugar, dried fishes, dusts of houses and freight offices. the identified mites were classified into 12 species belonging to 12 genera, 5 families as following lists, of which 4 species (*) are newly recorded in korea. family acaridae ewing and nesbitt, 1942 1. tyrophagus putrescentiae (schrank, 1781) 2. acarus siro linnaeus, 1758 *3. ... | 1980 | 12902723 |
| evaluation of the acarofauna of the domiciliary ecosystem in juiz de fora, state of minas gerais, brazil. | from august 1999 to january 2000, samples of house dust were collected from 160 domiciles in the city of juiz de fora, state of minas gerais, brazil. in 36 of these domiciles kitchen samples were obtained. prevalence rate was 77.5%, varying according to the geographical sector. there were found 2,278 specimens of mites, with 1,530 (67.2%) in the adult stage and 748 (32.8%) in immature forms. the main species found were dermatophagoides pteronyssinus, d. farinae, euroglyphus maynei, blomia tropic ... | 2001 | 11685254 |
| sensitization to different mite species in german farmers: clinical aspects. | various mite species referred to collectively as house dust and storage mites are recognized worldwide as a cause of allergic airway disease. our study aimed to investigate the frequency of sensitization and potential importance of mite species in farmers using a broad mite spectrum. a total of 86 german farmers with rhinitis and/or asthma were studied by skin prick testing and/or enzyme allergosorbent test (east) with the following mites: blomia tjibodas, blomia tropicalis, blomia kulagini, gly ... | 2000 | 11206935 |
| house dust mites in the city of lima, peru. | since mites are the most common house dust allergens, knowledge about the species most prevalent in a region is important for diagnostic and specific immunotherapy purposes. in order to establish the prevalence of house dust mites in different city districts, 100 house dust samples were collected from different parts of lima. lima is a city of tropical climate located along the coast of the pacific ocean. the relative air humidity is 80-90% and the various districts studied are located at altitu ... | 2000 | 11108440 |
| mite fauna of german farms. | storage mites are important sources of airborne allergens, especially on farms. a mite survey was conducted in the working environments of 121 farms in five regions of germany. of 859 samples, 743 (86.4%) contained mites, representing 547,857 astigmatic mites in 723 g of dust and 34,501 prostigmatic mites in 469 g of dust. dust samples from nine sites of each farm were collected and analyzed. ninety-three percent of all mites belonged to the order astigmata (storage- and house-dust-mite species) ... | 1997 | 9450144 |
| occupational allergic disease in cereal workers by stored grain pests. | it is well known that workers occupationally exposed to grain dust have a high prevalence of respiratory symptoms, but their pathogenesis remains obscure when sensitization to cereal flour cannot be demonstrated. storage mites, tenebroids, and cockroaches are stored-grain pests found in grain and cereal products frequently in our area, where the cereal industry is the most important industry. an epidemiological analysis of sensitization of these stored-grain pests was performed on 4379 patients ... | 1997 | 9350153 |
| mite sensitivity and exposure in the city of santa fe, argentina. | little information is available on mite allergen levels and rates of sensitization to domestic mites in south america. the purpose of this study was to establish the rate of sensitization to domestic mites in asthmatics and measure mite allergen levels in pillows and mattresses of mite allergic individuals in santa fe, argentina. dust samples were collected from the pillows and mattresses of 56 asthmatics (24 females and 32 males, mean age 17.6 +/- 11.5 years), who had been previously skin teste ... | 1996 | 8959537 |
| allergen-specific ige levels and mite allergen exposure in children with acute asthma first seen in an emergency department and in nonasthmatic control subjects. | sensitization to allergens has been shown to be a risk factor for adults with acute asthma first seen in the emergency department. | 1996 | 8757201 |
| sensitization to chortoglyphus arcuatus and aleuroglyphus ovatus in dermatophagoides spp. allergic individuals. | the prevalence of specific ige to the storage mites aleuroglyphus ovatus (ao) and chortoglyphus arcuatus (ca) was studied in 77 individuals with allergic asthma and/or chronic allergic rhinitis. all these individuals had a positive skin test (weal > or = 3 mm) to extracts of dermatophagoides pteronyssinus (dp) and/or dermatophagoides farinae (df). sera from 29 non-atopic individuals were used as controls. a rast was considered positive when a serum bound > or = 1% of the total counts added. the ... | 1993 | 8448678 |
| inhaled aeroallergen and storage mite reactivity in a wisconsin farmer nested case-control study. | a nested case-control study was undertaken to assess the role of antibody (ab) to a panel of antigens associated with hypersensitivity pneumonitis in the development of lung disease among wisconsin dairy farmers. immunologic reactivity to a panel of inhaled allergens was assessed in the ab+ cases and compared to the ab+ control, ab- control, and ab- blue-collar control subjects by skin tests, rast assays, and a modified american thoracic society questionnaire. the most prevalent allergens among ... | 1993 | 8430958 |
| mite fauna, der p i, der f i and blomia tropicalis allergen levels in a tropical environment. | fifty dust samples were collected from the mattresses and bedroom floors of 25 subjects with allergic asthma in cartagena, colombia, in order to identify house dust mites and quantitate der p i, der f i and blomia tropicalis allergens. the geometric mean of the total mite density per gram of dust was 418 (range, 40-2280). twenty-two samples (44%) had more than 500 mites and four, less than 100. b. tropicalis and dermatophagoides pteronyssinus were found in 96% and 90% of the samples, accounting ... | 1993 | 8319126 |
| enzymatic activity of allergenic house dust and storage mite extracts. | proteases are involved in the pathogenicity of allergy, increasing epithelial permeability and acting as adjuvants. enzymatic activity is therefore important for the allergenicity of an extract and also affects its stability and safety. however, the enzymatic activity of extracts is not usually evaluated. the objective of this study was to evaluate the enzymatic activity of the most allergenic mite extracts and to investigate their allergenic properties. extracts from nine allergenic mite specie ... | 2013 | 23427664 |
| mite allergen exposure, sensitisation and clinical symptoms in valdivia, chile. | one hundred consecutive asthmatic paediatric patients were evaluated and skin tested with a battery of skin prick test reagents, including 8 different standardized house dust mite extracts. asthma severity was graded according to the global initiative for asthma (gina) document in mild persistent (52 patients), moderate persistent (39) and severe persistent (9). sixty patients had asthma and allergic rhinitis, 12 asthma and eczema, and 8 asthma, allergic rhinitis and eczema. the patient populati ... | 2005 | 16261955 |
| [the importance of house dust mites and stored food mites as house dust allergens in the rural population]. | house dust samples from rural districts contain more mite species (in particular stored food mites) than samples from urban areas, and the total number of mites is also approximately three times greater. 77 patients from rural districts, 48 of whom allergic to their own house dust, and 29 controls, were tested with mite extracts from dermatophagoides pteronyssimus, d. farinae, chortoglyphus arcuatus, acarus siro, glycyphagus destructor and tyrophagus putrescentiae, and a house dust extract. out ... | 1977 | 594733 |
| cutaneous sensitivity to six mite species in asthmatic patients from five latin american countries. | the prevalence of positive skin prick tests to the mite species dermatophagoides pteronyssinus, d. farinae, blomia tropicalis, chortoglyphus arcuatus, lepidoglyphus destructor and aleuroglyphus ovatus was determined in 297 asthmatic adults and children living in seven cities of five latin american countries. a standardized protocol and a common battery of extracts were used at each site. the mean wheal diameters were measured after 15 min, and those > or = 3 mm were considered positive. sensitiz ... | 2013 | 8298748 |
| molecular and biochemical properties of storage mites (except blomia species). | in recent years, the allergological importance of different mite species not belonging to the family pyroglyphidae has been demonstrated. these mites, commonly named storage mites, include lepidoglyphus destructor, glycyphagus domesticus, tyrophagus putrescentiae, acarus siro, aleuroglyphus ovatus, suidasia medanensis and thyreophagus entomophagus. several allergens from these species have been purified, sequenced and cloned. many of these allergens have shown sequence homology and a biological ... | 2007 | 18220992 |
| studies on the occurrence, identification and control of house dust mites at rural houses of shebin el-kom locality, egypt. | the present study was conducted at elkom elakhdar village, shebin el-kom, menoufia governorate along 2012 year seasons, to calculate and identify the species composition and the occurrence frequency of the extracted dust mites collected from three building ages at rural houses, as well as to determine the toxicity limits of different concentrations of three plant essential oils against two species of the family pyroglyphidae the main causal of allergy to humans. the obtained results revealed tha ... | 2015 | 26506648 |
| [housedust mites++ in the city of valdivia, chile]. | in the house dust there are different species of mites, which have medical importance because they are related to allergic asthma, rhinitis and/or dermatitis. between april-august 1989 and march-june 1990, 100 samples of house dust collected in the city of valdivia, chile were analyzed. by using special techniques the samples were examined and classified. in the present research 70 samples of dust were positive, which showed one or more species of mites. thirteen species and one genus were class ... | 2006 | 8573262 |
| effect of stored product mite extracts on human dermal microvascular endothelial cells. | stored product mites commonly occur in agricultural work environments and sometimes in homes in significant numbers. they are a source of allergens that sensitize and induce allergic reactions. this may include atopic dermatitis. the purpose of this investigation was to determine if the common species of storage mites are the sources of molecules that influence the function of human dermal microvascular endothelial cells that regulate the trafficking of inflammatory and immune cells into the der ... | 2012 | 23270170 |
| mite hypersensitivity in patients with rhinitis and rhinosinusitis living in a tropical environment. | rhinitis and rhinosinusitis are major concerns in public health. mites are important aetiological agents in the tropics. the present study investigated the in vivo response to mite allergens in patients with rhinitis and rhinosinusitis. | 2014 | 23253681 |
| in vivo and in vitro allergenicity of the domestic mite chortoglyphus arcuatus. | chortoglyphus arcuatus is frequently identified in mattress dust samples in coastal areas of northern spain. | 2006 | 16937752 |
| enzymatic activity in body and fecal extracts of the storage mite chortoglyphus arcuatus. | chortoglyphus arcuatus has been described in many countries. many allergens are potent enzymes, which may promote a th2 immune response. the aim of this study was to evaluate the enzymatic activity of body and fecal extracts of c. arcuatus. | 2008 | 17914272 |
| seafood hypersensitivity in mite sensitized individuals: is tropomyosin the only responsible allergen? | seafood allergy has been related to mite sensitization, mainly mediated by the muscle protein tropomyosin. | 2011 | 21354024 |
| identification and biosynthesis of an aggregation pheromone of the storage mite chortoglyphus arcuatus. | in an effort to identify new pheromones from mites, the headspace of undisturbed colonies of the storage mite chortoglyphus arcuatus was analyzed by gc-ms by use of a closed-loop stripping apparatus (clsa) or solid-phase microextraction (spme). the major compound emitted from the mites is (4r,6r,8r)-4,6,8-trimethyldecan-2-one (4r,6r,8r-8). the structure was elucidated by analysis of the mass spectrum, synthesis of authentic samples, and gas chromatography on a chiral phase. bioassays show that t ... | 2004 | 15481032 |
| mite fauna assessment in houses of two distinct socioeconomic groups from southern brazil. | house dust mites (hdm) are the main source of aeroallergens worldwide, yet epidemiological differences between socioeconomic factors in association with this medical condition have not been studied in the south region of brazil. to assess the prevalence of hdm in two socioeconomically distinct populations of patients with allergic asthma or rhinitis, the differences between samples from houses of high-income families and low-income families were analyzed. mite samples were collected between july ... | 2017 | 29281052 |
| [storage mites as the source of household allergens]. | storage mites of the families acaridae and glycyphagidae attracted attention as the source of household allergens. storage mites occurring in house dust were studied. the fauna of storage mites in house dust was represented by two families. the dominating species, both in the relative amount and occurrence, were tyrophagus putrescentiae and chortoglyphus arcuatus. in addition, caloglyphus rodionovi and carpoglyphus lactis occur regularly. the specific activity of allergenic extracts obtained fro ... | 2016 | 9460873 |