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  • Title: [Serum gamma-glutamyltransferase alteration in hepatic schistosomiasis doesn't correlate with parasitic load and precedes ultrasound alterations].
    Author: Amaral AC, de Aguiar LA, Souza MR, de Toledo CF, Borges DR.
    Journal: Arq Gastroenterol; 2002; 39(1):27-31. PubMed ID: 12184162.
    Abstract:
    BACKGROUND: Liver disorders are the major manifestations of schistosomiasis mansoni. Factors that account for increased concentrations of cholestasis-indicating enzymes in the hepatosplenic form of the disease are unknown. OBJECTIVE: To assess the correlation between increased gamma-glutamyltransferase serum levels and both the parasitic load and ultrasound alterations in patients with schistosomiasis. PATIENTS AND METHODS: Twenty-five patients with the chronic form of schistosomiasis were assessed for the presence or absence of increased enzymatic levels, for the parasitic load (low x medium/high) and for ultrasound parameters. Furthermore, analysis of prothrombin time and a platelet count were performed. RESULTS: Of the 25 patients, 13 showed increased gamma-glutamyltransferase plasma levels. No significant correlation was found between increased gamma-glutamyltransferase levels and the parasitic load, or between increased enzyme levels and ultrasound alterations. Nor did the prothrombin index or the platelet count differ between the two groups (normal gamma-glutamyltransferase levels and increased gamma-glutamyltransferase levels). CONCLUSION: The parasitic load explains no rise in gamma-glutamyltransferase plasma levels in patients with the chronic form of schistosomiasis, and conventional ultrasound is not a sensitive method to detect the alteration suggested by the increased enzyme level in those patients.
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