Consulta: creatorFacets:"Ferrari,T.C.A."
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Data/hora: 02/06/2024 11:52:43

Serodiagnosis of Helicobacter pylori infection by Cobas Core ELISA in adults from Minas Gerais, Brazil
Provedor de dados: 56
Autores: Rocha,G.A.; Oliveira,A.M.R.; Queiroz,D.M.M.; Mendes,E.N.; Moura,S.B.; Oliveira,C.A.; Ferrari,T.C.A.
We evaluated the accuracy of a 2nd generation ELISA to detect Helicobacter pylori infection in adults from a developing country in view of variations in sensitivity and specificity reported for different populations. We studied 97 non-consecutive patients who underwent endoscopy for evaluation of dispeptic symptoms. The presence of H. pylori was determined in antral biopsy specimens by culture, by the preformed urease test and in carbolfuchsin-stained smears. Patients were considered to be H. pylori positive if at least two of the three tests presented a positive result or if the culture was positive, and negative if the three tests were negative. Sixty-five adults (31 with peptic ulcer) were H. pylori positive and 32 adults were H. pylori negative....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Helicobacter pylori; Serodiagnosis; ELISA.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1998001000005

Occult hepatitis B virus infection in liver transplant patients in a Brazilian referral center
Provedor de dados: 56
Autores: Ferrari,T.C.A.; Xavier,M.A.P.; Vidigal,P.V.T.; Amaral,N.S.; Diniz,P.A.; Resende,A.P.; Miranda,D.M.; Faria,A.C.; Lima,A.S.; Faria,L.C.
Estimates of occult hepatitis B virus (HBV) infection prevalence varies among different studies depending on the prevalence of HBV infection in the study population and on the sensitivity of the assay used to detect HBV DNA. We investigated the prevalence of occult HBV infection in cirrhotic patients undergoing liver transplantation in a Brazilian referral center. Frozen liver samples from 68 adults were analyzed using a nested polymerase chain reaction assay for HBV DNA. The specificity of the amplified HBV sequences was confirmed by direct sequencing of the amplicons. The patient population comprised 49 (72.1%) males and 19 (27.9%) females with a median age of 53 years (range=18-67 years). Occult HBV infection was diagnosed in three (4.4%) patients. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Occult hepatitis B virus infection; Hepatitis B virus; HBV DNA; Liver transplantation.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2014001100990