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| Registros recuperados: 47 | |
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| Costa,P.C.S.; Fortes,F.S.A.; Machado,A.B.; Almeida,N.A.C.; Olivares,E.L.; Cabral,P.R.; Pedrosa,R.C.; Goldenberg,R.C.; Campos-de-Carvalho,A.C.; Masuda,M.O.. |
| We report results obtained with sera from 58 chronic chagasic patients that were evaluated for effects on heart rate and atrioventricular (AV) conduction in isolated rabbit hearts and screened for the presence of muscarinic and beta-adrenergic activity. We show that sera from 26 patients decreased heart rate, while 10 increased it and 22 had no effect. Additionally, sera from 20 of the 58 patients blocked AV conduction. Muscarinic activation seems to be involved in both effects, but is not the only mechanism, since atropine did not antagonize the decrease in heart rate in 23% of sera or AV block in 40%. Sera from patients with complex arrhythmias were significantly more effective in depressing both heart rate and AV conduction. Sera that induce increases... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chagas' disease; Antibodies; Muscarinic activation; Beta-adrenergic activation; Gap junction; Mammalian heart. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2000000400010 |
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| Passos,L.M.F.; Ribeiro,M.F.B.; Anderegg,P.I.; Böse,R.. |
| O objetivo do presente estudo foi determinar a dinâmica da produção de anticorpos anti-Babesia equi e B. caballi em éguas gestantes em condições naturais de campo em Minas Gerais e avaliar a eficiência da transferência passiva de anticorpos via colostro. Foram analisadas, pela imunofluorescência indireta, amostras de soros colhidas de 34 fêmeas aos 290, 305 e 320 dias de gestação, e no momento do parto, e de seus respectivos potros até 36 horas após o nascimento. Aos 290 dias de gestação, todas as fêmeas estavam positivas para B. equi e apenas duas estavam negativas para B. caballi. Todos os potros tornaram-se positivos para B. equi após ingestão de colostro, entretanto 42% permaneceram negativos para B. caballi 36 horas após o nascimento. Não se observou... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Babesia equi; Babesia caballi; Pregnant mares; Antibodies. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09351999000600003 |
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| Brandão,Paulo Eduardo; Cortez,Adriana; Ferreira,Fernando; Ferreira Neto,José Soares; Gregori,Fábio; Heinemann,Marcos Bryan; Homem,Valéria Stacchini Ferreira; Rodriguez,Cesar Alejandro Rosales; Jerez,José Antonio. |
| Rotavirus is a worldwide etiologic agent of diarrhea, responsible for large economic losses. We studied the seroprevalence of antibodies to group A rotavirus in cattle in 67 smallholder farms from Uruará municipality, using counterimmunoelectroosmophoresis with the NCDV strain as a standard antigen. Prevalence of positive smallholder farms was 95.6-100%. Significant differences were seen between age groups when the seropositivity rose from the youngest to the oldest groups and between females and males older than 1 year, when the seropositivity was higher in the first group. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Seroepidemiologic studies; Antibodies; Rotavirus; Cattle; Amazonia. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-95962002000100003 |
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| BERGDOLL,M. S.. |
| Toxic shock syndrome is a staphylococcal disease caused by toxins produced by the staphylococci, toxic shock syndrome toxin-1 and enterotoxin B. The disease results from staphylococci growing in the vagina with the use of tampons during menstruation, primarily in young women. However, any staphylococcal infection can result in toxic shock syndrome if the staphylococci produce the appropriate toxins and the individual has no antibodies to the toxins. The symptoms can be quite severe, with high fever, low blood pressure, diffuse macular erythroderma, orthostatic dizziness, vomiting and or diarrhea at the onset, severe myalgia, peeling of the skin of the palms of the hands and the soles of the feet after seven to ten days, and death in some cases. The disease... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Toxic shock syndrome; Toxic shock syndrome toxin; Staphylococci; Enterotoxins; Antibodies. |
| Ano: 1997 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-79301997000100002 |
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| BARRAVIERA,B.; SARTORI,A.; PEREIRA DA SILVA,M. F.; KANENO,R.; PERAÇOLI,M. T. S.. |
| A sandwich-type ELISA technique for specific and sensitive detection of Crotalus durissus terrificus venom antigens, horse-antivenom, human IgG and IgM antibodies was set up. Sixteen patients, 13 males and 3 females aged between 13 to 63 years (mean 33 ± 15) bitten by Crotalus durissus terrificus snakes were studied. Of the 15 patients, 6 had previously received anti-Crotalus venom and no seric venom was detected. For the other 9 patients studied, the venom levels ranged from 2 to 108 ng/ml according to the severity of each case. Seric antivenom was detected up to 44 days after the bite. IgM human antibody levels against Crotalus venom were higher between 3 and 18 days after specific treatment. IgG human antibody levels against Crotalus venom were detected... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Enzyme-linked immunosorbent assay; Crotalus durissus terrificus; Venom; Antivenom; Antibodies; Cerebrospinal fluid. |
| Ano: 1996 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-79301996000100003 |
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| Registros recuperados: 47 | |
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