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

Acta Cirurgica Brasileira

Renato Motta Neto²  Sergio Botelho Guimarães¹  Sônia Leite Da Silva¹  José Napoleão Da Cruz¹  Thiago Dias¹  Paulo Roberto Leitão De Vasconcelos¹ 

[1] ,UFC

关键词: Glutamine;    T-Lymphocytes;    CD4-Positive T-Lymphocytes;    CD8-Positive T-Lymphocytes;    CD4-CD8 Ratio;    Rats;    Glutamina;    Linfócitos T;    Linfócitos T CD4-Positivos;    Linfócitos T CD8-Positivos;    Relação CD4-CD8;    Ratos;   

DOI  :  10.1590/S0102-86502007000300010

来源: SciELO

【 摘 要 】

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 150mg/Kg intraperitonially dissolved in buffer solution and were equally distributed in 3 subgroups, upon induction of diabetes mellitus, and treated as follows: (G2): saline, 2.0ml; (G3): glutamine solution (0.7g/kg), 2.0 ml; and (G4): whey-protein (WPS) solution (0.7g/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.

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