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Inhibition of gastric emptying and intestinal transit in anesthetized rats by a Tityus serrulatus scorpion toxin BJMBR
Troncon,L.E.A.; Santos,A.A.; Garbacio,V.L.; Secaf,M.; Verceze,A.V.; Cunha-Melo,J.R..
The effects of a fraction (T1) of Tityus serrulatus scorpion venom prepared by gel filtration on gastric emptying and small intestinal transit were investigated in male Wistar rats. Fasted animals were anesthetized with urethane, submitted to tracheal intubation and right jugular vein cannulation. Scorpion toxin (250 µg/kg) or saline was injected iv and 1 h later a bolus of saline (1.0 ml/100 g) labeled with 99m technetium-phytate (10 MBq) was administered by gavage. After 15 min, animals were sacrificed and the radioactivity remaining in the stomach was determined. Intestinal transit was evaluated by instillation of a technetium-labeled saline bolus (1.0 ml) through a cannula previously implanted in the duodenum. After 60 min, the progression of the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Scorpion toxin; Gastric emptying; Intestinal transit; Gastrointestinal motility.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2000000900010
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Hepatitis C virus infection in a Brazilian population with sickle-cell anemia BJMBR
Torres,M.C.M.R.; Pereira,L.M.M.B.; Ximenes,R.A.A.; Araújo,A.S.; Secaf,M.; Rodrigues,S.S.; Bezerra,A.C.S.; Conceição,I.B.; Valença,M.I.B.; Martinelli,A.L.C..
Patients with sickle-cell anemia submitted to frequent blood transfusions are at risk of contamination with hepatitis C virus (HCV). Determination of HCV RNA and genotype characterization are parameters that are relevant for the treatment of the viral infection. The objective of the present study was to determine the frequency of HCV infection and the positivity for HCV RNA and to identify the HCV genotype in patients with sickle-cell anemia with a history of blood transfusion who had been treated at the Hospital of the HEMOPE Foundation. Sera from 291 patients were tested for anti-HCV antibodies by ELISA 3.0 and RIBA 3.0 Chiron and for the presence of HCV RNA by RT-PCR. HCV genotyping was performed in 19 serum samples. Forty-one of 291 patients (14.1%)...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hepatitis C; Anti-HCV antibodies; HCV RNA; HCV genotype; Sickle-cell anemia.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003000300006
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