ABSTRACT
Para determinar a infeccao pelo Trypanosoma cruzi em mamiferos em Yucatan, Mexico, foram estudados 372 animais selvagens e sinantropicos incluindo carnivoros, marsupiais e roedores. Estudos sorologicos pela hemaglutinacao indireta (IHA) foram realizados para detectar anticorpos contra o T. cruzi e estudos parasitologicos (esfregacos de sangue e histopatologia). De todos os animais testados 18,54 por cento foram sorologicamente positivos com frequencia significativamente maior entre os silvestres (33,3 por cento) em comparacao com os sinantropicos (11,79 por cento). Para determinacao do T. cruzi nos animais positivos, o sangue foi inoculado em camundongos brancos (tipo Webster) para provar a colonizacao miocardica. Atraves da sua positividade sorologica e parasitologica, bem como seu comportamento no meio ambiente acompanhado pelas caracteristicas sociais, economicas e culturais da populacao, deduz-se que em Yucatan, Mexico, Canis familiaris, Didelphis marsupialis e Rattus rattus atuam como ligacao com o ciclo selvagem
Subject(s)
Animals , Mice , Chagas Disease/epidemiology , Animals, Wild , Chagas Disease/parasitology , Chagas Disease/blood , Mammals/parasitology , Mexico , Zoonoses/parasitologyABSTRACT
In order to determine Trypanosoma cruzi infection among mammals in Yucatan, Mexico, 372 animals, both wild and synanthropic including carnivores, marsupials and rodents were studied. Serological studies by indirect haemagglutination (IHA) were carried out to detect antibodies to T. cruzi and a parasitological study was also performed (blood smear and histopathology). Of all the animals tested 18.54% were serologically positive, with a significantly higher frequency among the wild ones (33.33%) compared to the synanthropic ones (17.79%). To determine T. cruzi in positive animals, blood was inoculated into a white mouse (webster type) to prove myocardium colonization. The serological and parasitological positivity of these animals, as well as their behavior in the environment, taken together with the socioeconomic and cultural characteristics of the population, suggest that in Yucatan, Mexico, Canis familiaris, Didelphis marsupialis and Rattus rattus act as a link with the wild cycle.
Subject(s)
Chagas Disease/veterinary , Mammals/parasitology , Animals , Antibodies, Protozoan/blood , Chagas Disease/blood , Chagas Disease/immunology , Mammals/immunology , Mexico , Mice , Rats , Trypanosoma cruzi/immunology , Trypanosoma cruzi/isolation & purificationABSTRACT
The relationship between abortion and infection by Toxoplasma gondii was analyzed in 100 cases of spontaneous abortions, 51 of which corresponded to single abortions and 49 to cases with a history of repeated abortions. The Sabin-Feldman test was used for the detection of specific antibodies. Parasites were identified and isolated in the aborted material; sections were stained by Hematoxilin-Eosin, processed for indirect immunofluorescence and inoculated into mice. Antibodies to Toxoplasma were detected in 47 percent of the total study population. Positive identification of parasites in the decidua and corionic villae was established in 2 percent of the patients studied. Parasites could only be isolated in one of these patients. Both cases belonged to the group with positive serology and antibody titers of 1:64 and 1:128, and having experienced a single abortion. There was no significant statistical difference with regard to antibody titers between the single abortion and repeated abortion groups. Our results indicate an important causative relationship between toxoplasmosis and abortions in Mérida, Yucatán, México.
Subject(s)
Abortion, Spontaneous/etiology , Pregnancy Complications, Infectious , Toxoplasmosis/complications , Abortion, Habitual/etiology , Adolescent , Adult , Animals , Antibodies, Protozoan/analysis , Female , Hospitals, General , Humans , Mexico , Pregnancy , Pregnancy Trimester, First , Toxoplasma/immunology , Toxoplasmosis/pathologyABSTRACT
Se presenta el primer caso de Esporotricosis en el Estado de Yucatan. Se trata de paciente masculino de 40 anos de edad, nacido y radicado en Chunchucmil, municipio de Maxcanu, Yucatan, Mexico y de ocupacion agricultor.Presento una forma linfatica cutanea en la extremidad superior derecha cuyo inicio se debio a una lesion penetrante con una espina de penca de benequen a nivel de dorso de la base del dedo anular de la mano derecha. El diagnostico se corroboro micologicamente y el tratamiento con yoduro de potasio fue satisfactorio
