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Abstract Title:

Glutamine or whey-protein supplementation on alloxan-induced diabetic rats. Effects on CD4+ and CD8+ lymphocytes.

Abstract Source:

Acta Cir Bras. 2007 May-Jun;22(3):215-9. PMID: 17546295

Abstract Author(s):

Renato Motta Neto, Sergio Botelho Guimarães, Sônia Leite da Silva, José Napoleão da Cruz, Thiago Dias, Paulo Roberto Leitão de Vasconcelos

Article Affiliation:

UFC, Faculty of Pharmacy, Univaersity of Fortaleza (UNIFOR), Brazil.

Abstract:

PURPOSE: To evaluate the effects of glutamine (L-Gln) or whey-protein supplementation on CD4+ and CD8+ lymphocytes in alloxan-induced diabetic rats. METHODS: Thirty-two healthy male Wistar rats were used in the experiment. Eight rats served as baseline controls (G-1). The remaining 24 animals received alloxan 150 mg/Kg intraperitonially dissolved in buffer solution and were equally distributed in 3 subgroups, upon induction of diabetes mellitus, and treated as follows: (G2): saline, 2.0 ml; (G3): glutamine solution (0.7 g/kg), 2.0 ml; and (G4): whey-protein (WPS) solution (0.7 g/kg), 2.0 ml. All solutions were administered by daily 7:00 AM gavages during 30 days. Next, arterial blood samples (3.0 ml) were collected from anesthetized rats for CD4+ and CD8+ lymphocyte count through flow cytometry technology. RESULTS: CD4+ and CD8+ counts decreased significantly in all groups compared with baseline values (G1). G2 rats CD4+/CD8+ ratio decreased significantly compared with G1. CD4+/CD8+ ratio increased significantly (>260%) in L-Gln treated group (G3) compared with saline-treated rats (G2). There were no statistical differences in lymphocyte counts (CD4+ and CD8+) between L-Gln (G3) and saline-treated (G2) groups. There was a significant reduction in CD8+ cell count compared with CD4+ cell count in L-Gln treated rats (G3). CONCLUSION: The offer of L-Gln to experimental diabetic rats enhances the immunologic response to infection.

Study Type : Animal Study

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Sayer Ji
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