RESUMO
INTRODUCTION: Toxoplasmosis is a parasitic disease caused by the protozoan Toxoplasma gondii, which affects humans and other animals. The most severe form is congenital toxoplasmosis. Thus, it is important to establish the serological profile of women before pregnancy. This study aimed to analyze the serology of toxoplasmosis among female students on the nursing course at Unoeste (Universidade do Oeste Paulista), in Presidente Prudente, SP. METHODS: Blood samples were collected from 80 female students aged 18 to 35 years after they had signed the consent statement. Occurrences of anti-Toxoplasma gondii IgM and IgG antibodies were determined using the ELISA method. This study was approved by the institution's ethics committee and was conducted in the Immunology Laboratory at Unoeste. RESULTS: Among the 80 blood samples analyzed, 27 female students were positive for IgG, whereas none of them were positive for IgM antibodies. CONCLUSIONS: Among the 80 female students, 53 (66.2%) would be susceptible to toxoplasmosis in a possible pregnancy. Twenty-seven of the female students (33.8%) were considered seropositive.
Assuntos
Anticorpos Antiprotozoários/sangue , Imunoglobulina G/sangue , Imunoglobulina M/sangue , Toxoplasma/imunologia , Toxoplasmose/epidemiologia , Adolescente , Adulto , Brasil/epidemiologia , Estudos Transversais , Ensaio de Imunoadsorção Enzimática , Feminino , Humanos , Estudos Soroepidemiológicos , Estudantes de Enfermagem , Toxoplasmose/diagnóstico , Adulto JovemRESUMO
INTRODUÇÃO: toxoplasmose é uma doença parasitária causada pelo protozoário Toxoplasma gondii, que acomete o homem e outros animais. A forma mais grave é a toxoplasmose congênita, sendo então importante estabelecer o perfil sorológico da mulher antes da gestação. Este trabalho objetivou analisar a sorologia para toxoplasmose de alunas do curso de Enfermagem da UNOESTE (Universidade do Oeste Paulista) Presidente Prudente/SP. MÉTODOS: foram coletadas amostras de sangue de 80 alunas, com idade de 18 a 35 anos após assinatura do Termo de Consentimento. A ocorrência de anticorpos IgM e IgG anti-Toxoplasma gondii foi determinada pelo método ELISA. Este trabalho foi aprovado pelo Comitê de Ética da Instituição e realizado no Laboratório de Imunologia da UNOESTE. RESULTADOS: das 80 amostras de sangue analisadas, 27 alunas apresentaram IgG positiva e nenhuma apresentou anticorpo IgM. CONCLUSÕES: das 80 alunas, 53 (66,2 por cento), são suscetíveis à toxoplasmose numa possível gestação. Sendo 27 (33,8) as alunas consideradas soropositivas.
INTRODUCTION: Toxoplasmosis is a parasitic disease caused by the protozoan Toxoplasma gondii, which affects humans and other animals. The most severe form is congenital toxoplasmosis. Thus, it is important to establish the serological profile of women before pregnancy. This study aimed to analyze the serology of toxoplasmosis among female students on the nursing course at Unoeste (Universidade do Oeste Paulista), in Presidente Prudente, SP. METHODS: Blood samples were collected from 80 female students aged 18 to 35 years after they had signed the consent statement. Occurrences of anti-Toxoplasma gondii IgM and IgG antibodies were determined using the ELISA method. This study was approved by the institution's ethics committee and was conducted in the Immunology Laboratory at Unoeste. RESULTS: Among the 80 blood samples analyzed, 27 female students were positive for IgG, whereas none of them were positive for IgM antibodies. CONCLUSIONS: Among the 80 female students, 53 (66.2 percent) would be susceptible to toxoplasmosis in a possible pregnancy. Twenty-seven of the female students (33.8 percent) were considered seropositive.
Assuntos
Adolescente , Adulto , Feminino , Humanos , Adulto Jovem , Anticorpos Antiprotozoários/sangue , Imunoglobulina G/sangue , Imunoglobulina M/sangue , Toxoplasma/imunologia , Toxoplasmose/epidemiologia , Brasil/epidemiologia , Estudos Transversais , Ensaio de Imunoadsorção Enzimática , Estudos Soroepidemiológicos , Estudantes de Enfermagem , Toxoplasmose/diagnóstico , Adulto JovemRESUMO
Th1 cells, in cooperation with activated macrophages, are required to overcome Yersinia enterocolitica infection in mice. The pathway macrophages utilize to metabolize arginine can alter the outcome of inflammation in different ways. The objective of this study was to verify the pattern of macrophages activation in Y. enterocolitica infection of BALB/c (Yersinia-susceptible) and C57BL/6 (Yersinia-resistant) mice. Both strains of mice were infected with Y. enterocolitica O:8 WA 2707. Peritoneal macrophages and spleen cells were obtained on the 1st, 3rd and 5th day post-infection. The iNOS and the arginase activities were assayed in supernatants of macrophage cultures, by measuring their NO/citrulline and ornithine products, respectively. TGFbeta-1 production was also assayed. The Th1 and Th2 responses were evaluated in supernatants of lymphocyte cultures, by IFN-gamma and IL-4 production. Our results showed that in the early phase of Y. enterocolitica infection (1st and 3rd day), the macrophages from C57BL/6 mice produced higher levels of NO/citrulline and lower levels of ornithine than macrophages from BALB/c mice. The infection with Y. enterocolitica leads to an increase in the TGF-beta1 and IL-4 production by BALB/c mice and to an increase in the IFN-gamma levels produced by C57BL/6 mice. These results suggest that Y. enterocolitica infection leads to the modulation of M1 macrophages in C57Bl/6 mice, and M2 macrophages in BALB/c mice. The predominant macrophage population (M1 or M2) at the 1st and 3rd day of infection thus seems to be important in determining Y. enterocolitica susceptibility or resistance.