| levels of vaccine potency used in the successful control of rabies in buenos aires, argentina. | | 1986 | 3776381 |
| [chagas' disease in buenos aires province, argentina]. | | 1973 | 4266500 |
| leptospiral antibodies in stray dogs of moreno, province of buenos aires, argentina. | a serologic survey for leptospirosis in stray dogs from moreno, province of buenos aires, was carried out. sera from 143 randomly collected animals were examined by the microscopic agglutination test. a total of 73 (51.0%) of the dogs have had contact with leptospirae. the predominant leptospiral agglutinnins were to serovar canicola (37.0%) and to a lesser degree against the serovar antigens pyrogenes (4.8%) and autumnalis (2.0%). although a high percentage of seropositive reactions occurred ag ... | 1980 | 7348314 |
| cochliomyia hominivorax (coquerel, 1858) and phaenicia sericata (meigen, 1826) parasiting domestic animals in buenos aires and vicinities (diptera, calliphoridae). | | 1994 | 7885240 |
| [frequency of finding helminths eggs in canine stool samples collected in public places in the la plata city, argentina]. | a study was carried out in order to determine the level of contamination with helminth eggs in different sectors of the city of la plata, argentina. a total of 351 fecal pools were collected from streets (328) and parks and public places (23) of this locality. of these fecal pools, 117 (33.3%) contained eggs of at least one helminth species. the overall frequencies found were: uncinaria sp. 16.0%, trichuris vulpis 9.7% and toxocara canis 10.5%. | 1993 | 7993539 |
| [leptospira interrogans in a canine population of greater buenos aires: variables associated with seropositivity]. | we determined the seroprevalence of leptospirosis in a suburban canine population for the purpose of analyzing the association between different individual and environmental variables and seropositivity for leptospirosis. the study, which was cross-sectional, was performed in july 1992 in a neighborhood of greater buenos aires with approximately 9,500 inhabitants and a canine population of around 2,000 animals. we studied a random sample of 223 dogs and obtained a blood sample from each. each an ... | 1997 | 9312417 |
| genetic variation and epidemiology of echinococcus granulosus in argentina. | polymerase chain reaction-ribosomal its-1 dna (rdna) restriction fragment length polymorphism (pcr-rflp) analysis and sequencing of the mitochondrial cytochrome c oxidase subunit 1 (co1) and nadh dehydrogenase 1 (nd1) genes were used to characterize 33 echinococcus granulosus isolates collected from different regions and hosts in argentina, and to determine which genotypes occurred in humans with cystic hydatid disease. the results of the study demonstrated the presence of at least 4 distinct ge ... | 1999 | 10363285 |
| [soil contamination with toxocara sp. eggs in squares and public places from the city of la plata. buenos aires, argentina]. | this study consisted of a stratified sampling, randomly taken, of the soil from the squares and parks of the city of la plata, province of buenos aires, in order to establish the prevalence of contamination caused by toxocara sp. a total 242 soil samples was examined. from each sample a 10 grams aliquot was taken, washed in a 0.2% tween 80 solution, and processed using the technique of concentration by flotation with sugar solution. there was a prevalence of 13.2%. in each positive sample, the q ... | 2000 | 11338979 |
| history about the discovery of the renin-angiotensin system. | the history of the discovery of the renin-angiotensin system began in 1898 with the studies made by tigerstedt and bergman, who reported the pressor effect of renal extracts; they named the renal substance renin based on its origin. in 1934, harry goldblatt induced experimental hypertension in dogs by clamping a renal artery. about 1936, simultaneously in the medical school of the university of buenos aires, argentina, and in the eli-lilly laboratories in indianapolis, 2 independent groups of re ... | 2001 | 11751697 |
| lethal leptospiral pulmonary hemorrhage: an emerging disease in buenos aires, argentina. | | 2002 | 12194784 |
| thermotolerant campylobacters in domestic animals in a defined population in buenos aires, argentina. | we assessed the prevalence of campylobacter jejuni in animals in a region of unsatisfied basic needs in the city of buenos aires and studied a few risk factors. first we conducted a census to identify all dwellings having pet animals (dogs, cats, and birds). fecal samples were then taken for isolation and identification of strains. we observed 17% prevalence for dogs (95% ci: 13, 22), 16% for cats (95% ci: 8, 27) and 19% for birds (95% ci: 5, 42). in dogs, the highest prevalences were found in s ... | 2002 | 12383655 |
| prevalence of canine dirofilariosis in the city of buenos aires and its outskirts (argentina). | during the past 10 years, the prevalence of canine dirofilariosis in the city of buenos aires and its outskirts, particularly in the northern and southern areas, has increased significantly. in the present work, studies were carried out in dogs living in the city and in its northern, western and southern outskirts from 1997 to 2001. for this purpose, 782 blood samples were collected and analyzed to determine circulating antigen, processed with the witness merial antigen test. the samples resulte ... | 2002 | 12423937 |
| epidemiology of toxocara canis in the dog population from two areas of different socioeconomic status, greater buenos aires, argentina. | toxocara canis infection in dogs is a public health problem in most countries, although it has been poorly documented in many of them. the main objective of the present work was to investigate the epidemiology of infection in the canine populations from two areas of buenos aires of different socioeconomic status and urban conditions: a middle-income neighbourhood (min) and a low-income neighbourhood (lin). this study evaluated the prevalence of infection in dogs by parasitological and serologica ... | 2003 | 12935743 |
| [campylobacteriosis in a low-income community in buenos aires, argentina]. | the authors describe the problem of campylobacteriosis in a low-income community located in southern buenos aires. homes in the area were classified according to their total number of inhabitants, the number of children and animals living in the house and the amount of poultry meat consumed. samples were taken from all the different types of homes that had been identified in order to isolate, identify and type campylobacter sp., using the modified skirrow technique, bio-chemical tests and the li ... | 2003 | 15005557 |
| ectoparasitic species from canis familiaris (linné) in buenos aires province, argentina. | several arthropods that live as ectoparasites on domestic dogs can cause severe dermatitis or act as vectors of pathogenic agents, resulting in serious diseases not only in dogs, but also in humans. we studied ectoparasites found on canis familiaris sampled in five areas in buenos aires province, argentina. the prevalence of fleas, ticks and lice was analyzed, as well as their seasonal variations through the different sites studied. the kind of infestation found in each host was determined and t ... | 2004 | 15019149 |
| the role of the subterranean rodent ctenomys talarum (rodentia: octodontidae) in the life cycle of taenia taeniaeformis (cestoda: taeniidae) in urban environments. | this work is the first report of subterranean rodent ctenomys talarum (rodentia: octodontidae) as intermediate host of taenia taeniaeformis in urban areas of mar de cobo (buenos aires province, argentina) and to experimentally reproduce in domestic dogs the adult stage of this parasite. prevalence, mean abundance and mean intensity of infection with t. taeniaeformis larvae in the liver and peritoneal cavity of c. talarum were 64%, 15.3 and 9.8, respectively. ten adults of t. taeniaeformis were o ... | 2004 | 15158554 |
| buenos aires, a new leptospira serovar of serogroup djasiman, isolated from an aborted dog fetus in argentina. | this study describes the isolation of a new leptospiral serovar from the djasiman group from an argentinean aborted fetus of a dog. the strain was isolated from a culture of mixed liver and kidney tissue from one aborted dog fetus. bitch's serum showed a titre of 1:800 against the new serovar and 1:400 or less against other serovars tested. microscopic agglutination test (mat) with a panel of 38 rabbit anti-leptospira sera representative for all pathogenic serogroups was performed to establish t ... | 2005 | 15863283 |
| magnitude and distribution of canine fecal contamination and helminth eggs in two areas of different urban structure, greater buenos aires, argentina. | the canine fecal contamination and the potential transmission of parasites to human and canine populations represent a public health problem of cosmopolitan importance. the objectives of this work were to evaluate the magnitude of fecal and parasite contamination in two suburban areas of different characteristics, and to investigate their distribution in various urban microenvironments such as yards, green spaces and sidewalks. the areas were referred to as middle-income neighbourhood (min) and ... | 2005 | 16023293 |
| dirofilariasis in argentina: historical review and first report of dirofilaria immitis in a natural mosquito population. | argentina is one of the four south american countries where the presence of dirofilaria immitis is currently confirmed. the objective of this study was to review information on dirofilariasis in the country, and to report our recent findings on mosquito vectors. since the first report of dogs with unidentified microfilariae in 1926, d. immitis was found in seven provinces and canine prevalence ranged 0-71% at local scale. national prevalence was 8% by the end of the 1980s and current information ... | 2006 | 16310953 |
| an epidemiological study of gastrointestinal parasites of dogs from southern greater buenos aires (argentina): age, gender, breed, mixed infections, and seasonal and spatial patterns. | a total of 2193 fecal samples from owned dogs were collected during the 2003-2004 period in southern greater buenos aires, and were evaluated for the presence of intestinal parasites by a flotation-centrifugation method. the overall prevalence was 52.4%, and the 11 species found were: ancylostoma caninum (13%), isospora ohioensis complex (12%), toxocara canis (11%), trichuris vulpis (10%), sarcocystis sp. (10%), giardia duodenalis (9%), isospora canis (3%), hammondia-neospora complex (3%), dipil ... | 2006 | 16364551 |
| prevalence of toxocara cati and other parasites in cats' faeces collected from the open spaces of public institutions: buenos aires, argentina. | toxocarosis is a worldwide parasitic infection that affects both cats and dogs. toxocara cati (schrank, 1788) syn. toxocara mystax (zeder, 1800) prevalence was studied in faeces from stray cats collected from the open spaces of public institutions of buenos aires city, both building and surrounding open spaces are fenced off. of the 465 samples obtained from march to june of 2005, 58.3% were found to have parasite eggs. the following parasites were identified from the 271 positive samples: t. ca ... | 2006 | 16647819 |
| shiga toxin-producing and attaching and effacing escherichia coli in cats and dogs in a high hemolytic uremic syndrome incidence region in argentina. | shiga toxin-producing escherichia coli (stec), responsible for the hemolytic uremic syndrome, is an endemic pathogen in argentina. we studied the prevalence of stec in fecal samples from cats and dogs of buenos aires city and suburbs. cultures were used for screening stx1/stx2 and rfbo157 by multiplex pcr. all e. coli-positive colonies for these genes were further characterized for the eae gene and for serotypes. in dogs, 17 (3.7%), 19 (4.2%) and 34 (7.5%) of samples were positive for stx2, stx1 ... | 2007 | 17328115 |
| first molecular characterization of canine hepatozoonosis in argentina: evaluation of asymptomatic hepatozoon canis infection in dogs from buenos aires. | canine hepatozoonosis is an expanding tick-borne disease in argentina. hepatozoonosis was studied during 1 year in six dogs from the same household in buenos aires. blood parasitemia with hepatozoon gamonts was found in five dogs and all six were positive by pcr for hepatozoon sp. although the levels of parasitemia fluctuated during the year, no clinical signs of disease were detected during the follow up period. amplification and sequencing of a 650 bases fragment of the 18s rrna gene from all ... | 2007 | 17720320 |
| first molecular characterization of babesia vogeli in two naturally infected dogs of buenos aires, argentina. | large piroplasms (>2.5microm) were detected by direct microscopical investigation in 34 out of 16,767 (0.20%) canine blood smears in the southern region of greater buenos aires. genomic dna was extracted from two parasitemic dogs and the hypervariable 18s rna gene region of the pathogen was specifically amplified, sequenced, and aligned with corresponding gene sequences available in the genbank. phylogenetic trees were constructed and compared. 18s rna gene sequences reliably segregated in three ... | 2008 | 18786765 |
| [canine brucellosis in dogs in the city of buenos aires]. | canine brucellosis, caused by brucella canis, provokes epidydimitis, testicular atrophy and sterility in male dogs, while in females the major symptom is miscarriage. transmission to humans may be through contact with semen, urine and/or aborted fetuses of infected animals. our study, observational and cross-sectional, focused on dogs in lower class neighborhoods and slums with a high rate of unmet basic needs (ubn) in 8 areas of the city of buenos aires. we studied 219 dogs: 184 females and 35 ... | 2008 | 18786885 |
| flesh flies species (diptera: sarcophagidae) from a grassland and a woodland in a nature reserve of buenos aires, argentina. | temporal changes of flesh flies abundance were simultaneously recorded at monthly intervals during a year in a woodland and in a grassland at the "reserva ecológica costanera sur" (recs), buenos aires city, argentina. samples were taken at monthly intervals (february 2004-january 2005). hourly captures of adult flies (10:00 am - 04:00 pm) were taken each sampling date with a hand net. temperature was recorded at each hourly capture. the baits used were 200 g of rotten cow liver and 200 g of fres ... | 2008 | 19419045 |
| a serological and bacteriological survey of dogs to detect brucella infection in lomas de zamora, buenos aires province. | canine brucellosis caused by brucella canis is a disease of the reproductive tract that may cause miscarriage in females, infection of the sexual organs in males and infertility in both sexes. the prevalence of brucellosis in dogs is unknown and little has been done to control the disease, except in certain breeds and some commercial dog kennels. in the course of a free neuter program in lomas de zamora, buenos aires province, prevalence of antibodies to brucella sp., bacteriological isolation a ... | 2009 | 19623899 |
| [associations between geohelminths and socioenvironmental conditions among different human populations in argentina]. | to analyze the relationship between the geohelminth species found in urban, suburban, and rural areas of the buenos aires and misiones provinces of argentina, and the socioenvironmental conditions that promote infection by these parasites. | 2009 | 19814875 |
| a cornerstone in the history of hypertension: the seventieth anniversary of the discovery of angiotensin. | in 1939, two independent teams, in buenos aires and indianapolis, identified the polypeptide angiotensin. in 1934, goldblatt et al. demonstrated that partial occlusion of the renal arteries produces hypertension in dogs, and houssay in 1936 predicted the presence of a humoral mechanism and, with fasciolo, demonstrated that the ischemic kidneys released a pressor substance that increased the recipient's blood pressure. later on, taquini proved that the rise in blood pressure that follows the re-e ... | 2010 | 19956076 |
| the population ecology of muscina stabulans (fallén) (diptera: muscidae), along an urban-rural gradient of buenos aires, argentina. | the false stable fly, muscina stabulans (fallén), was surveyed along an urban-rural gradient at almirante brown, buenos aires province, argentina. samples were taken at monthly intervals from may 2005 to april 2007. hourly captures of adult flies (10:00 am-04:00 pm) were taken at each sampling date with a hand net. the baits used were 250 g of rotten cow liver and 250 g of fresh dog faeces exposed in shaded and sunny areas. the entire sample accumulated 358 specimens. the number of specimens cap ... | 2010 | 20676520 |
| [dog fouling and helminth contamination in parks and sidewalks of buenos aires city, 1991-2006]. | the aim of this study was to provide data on canine fecal and helminthic contamination from parks and sidewalks in buenos aires city, collected by the laboratory of general parasitology, school of sciences, university of buenos aires. a census of dog feces was performed in 1-11 parks per year between 1991 and 2006, a single day each year. in the period 2000-2006, the census included feces on sidewalks surrounding the park. thirty fresh fecal samples were randomly collected from each park to dete ... | 2010 | 20679057 |
| genetic and phylogenetic analyses of influenza a h1n1pdm virus in buenos aires, argentina. | an influenza pandemic caused by swine-origin influenza virus a/h1n1 (h1n1pdm) spread worldwide in 2009, with 12,080 confirmed cases and 626 deaths occurring in argentina. a total of 330 h1n1pdm viruses were detected from may to august 2009, and phylogenetic and genetic analyses of 21 complete genome sequences from both mild and fatal cases were achieved with reference to concatenated whole genomes. in addition, the analysis of another 16 hemagglutinin (ha), neuraminidase (na), and matrix (m) gen ... | 2010 | 21047959 |
| pcr detection of dirofilaria immitis in aedes aegypti and culex pipiens from urban temperate argentina. | dirofilariasis, a mosquito-borne disease of dogs caused by the nematode dirofilaria immitis (leidy; spirurida: onchocercidae), has now become a growing zoonotic concern. based on direct microscopical observation, aedes aegypti (l.) and culex pipiens l. (diptera: culicidae) have been previously incriminated as potential vectors of d. immitis in urban temperate argentina. in this study, an effort was made to provide evidence for this assumption by screening of mosquitoes for d. immitis infection u ... | 2010 | 21072539 |
| epidemiology of canine heartworm in its southern distribution limit in south america: risk factors, inter-annual trend and spatial patterns. | this study was aimed at understanding some aspects of the canine heartworm epidemiology in the southern distribution limit of the parasite in south america. with this objective, 19,298 blood samples of owned dogs from 65 localities of 13 municipalities of buenos aires province were tested for dirofilaria immitis circulating microfilariae and/or female antigens. the overall heartworm prevalence was 1.63% by microhematocrit tube technique (n=19,136), 3.65% by modified knott (n=713), and 14.41% by ... | 2010 | 21093157 |
| High prevalences of infection with Giardia intestinalis genotype B among children in urban and rural areas of Argentina. | The protozoan parasite most frequently associated with diarrhoea worldwide is Giardia intestinalis. In 2005, a study was initiated to identify the genotypes of this parasite infecting children in the Argentinian provinces of Buenos Aires, Mendoza and Chaco, and to explore the associations between the genotype detected in a child, the characteristics of the child's household and the child's clinical presentation. Overall, 998 children (504 boys and 494 girls) aged between 2-14 years, with or with ... | 2011 | 21871166 |
| epidemiological studies on echinococcus in pampas fox (lycalopex gymnocercus) and european hare (lepus europaeus) in buenos aires province, argentina. | in argentina, hydatid disease caused by echinococcus granulosus is widespread. the south of buenos aires province, argentina, is one of the three regions where hydatidosis is endemic. although domestic dogs and sheep are considered to be the main hosts for e. granulosus, the potential role of wildlife in the local transmission of e. granulosus has not been investigated. the aim of this study was to estimate the hydatidosis/echinococcosis prevalence in european hare (lepus europaeus) and pampas f ... | 2013 | 23892482 |
| socio-environmental conditions, intestinal parasitic infections and nutritional status in children from a suburban neighborhood of la plata, argentina. | we analyzed intestinal parasitic infections in children aged 1-12 years from a poor neighborhood in la plata, argentina, and determined the correlations with their nutritional status and socio-environmental conditions. we performed parasitological analyses with anal brushed technique (for enterobius vermicularis eggs) and fecal samples, employing the techniques of ritchie, carles barthelemy and willis. the worm burdens of nematodes were estimated by means of kato katz technique. low weight-for-a ... | 2011 | 19577532 |
| [nematophagous fungi of toxocara canis eggs in a public park of la plata, argentina]. | fungi have showed a great potential for the biological control of nematodes. however, they have not been evaluated for the control of animal and/or human parasites transmitted by egg contaminated soils. environmental contamination with toxocara spp. eggs is a public health problem. accidental swallowing of toxocara canis eggs (a nematode of dogs) usually results on a zoonotic infection (toxocarosis). the objectives of this research were: 1) to test the presence of antagonistic fungi against t. c ... | 2007 | 17592887 |
| biological interaction between soil fungi and toxocara canis eggs. | fungi from the soil of public areas in la plata, argentina were isolated and evaluated for their biological interaction with toxocara canis eggs in vitro. we isolated and identified two fungal species: fusarium pallidoroseum and mucor hiemalis. each species was co-cultured with t. canis eggs in sterile distilled water. the samples were observed by light and scanning electron microscopy (sem) at days 4, 7 and 14 post-inoculation. under the conditions of our experiments, f. pallidoroseum exhibited ... | 2002 | 11750118 |
| human toxocarosis. its seroprevalence in the city of la plata. | toxocara canis is very common in dogs throughout the world. it is the primary cause of visceral larva migrans (vlm) in humans. soil contaminated with t. canis embryonated eggs is the main source of infection of man. our objective was to describe toxocara seroprevalence in humans in the city of la plata associated with some determinants such asage, presence or absence of clinical manifestations and risk factors. blood samples were collected at random from 156 patients of different sex and age, wi ... | 2000 | 10800184 |