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• W2163146086 abstract "Autoantibodies reacting with alpha-melanocyte-stimulating hormone (α-MSH), an anorexigenic neuropeptide, are involved in regulation of feeding. In this work we studied if intestinal inflammation (mucositis) may influence α-MSH autoantibodies production relevant to food intake and body weight. Mucositis and anorexia were produced in Sprague-Dawley rats by methotrexate (MTX, 2.5mg/kg/day, for three days, subcutaneously). Plasma levels of total IgG and of α-MSH autoantibodies were measured during and after MTX-induced mucositis and were compared with pair-fed and ad libitum-fed controls. Effects of intraperitoneal injections of rabbit anti-α-MSH IgG (3 or 10 μg/day/rat) on MTX-induced anorexia and on plasma α-MSH peptide concentration were separately studied. Here we show that in MTX rats, intestinal mucositis and anorexia were accompanied by decreased plasma levels of both total IgG and of α-MSH autoantibodies while refeeding was characterized by their elevated levels. In spite of similar food intake in MTX and pair-fed rats, recovery of body weight was delayed by at least 1 week in the MTX group. During refeeding and body weight deficit in MTX rats, α-MSH IgG autoantibody levels correlated negatively with food to water intake ratios. Injections of anti-α-MSH IgG induced a dose-dependent attenuation of food intake and body weight regain in MTX-treated rats accompanied by increased concentrations of α-MSH peptide which correlated positively with plasma levels of α-MSH autoantibodies. These data show that intestinal inflammation, independently from food restriction, affects general humoral immune response which may influence food intake and body weight control via modulation of α-MSH plasma concentration by α-MSH reactive autoantibodies." @default.
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• W2163146086 date "2012-01-01" @default.
• W2163146086 modified "2023-10-14" @default.
• W2163146086 title "Intestinal inflammation influences α-MSH reactive autoantibodies: Relevance to food intake and body weight" @default.
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• W2163146086 doi "https://doi.org/10.1016/j.psyneuen.2011.05.008" @default.
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