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  • Title: Interaction of thymic peptide thymosin alpha 1 with vasoactive intestinal peptide (VIP) receptors.
    Author: Calvo JR, Goberna R, Guerrero JM.
    Journal: Biosci Rep; 1986 Aug; 6(8):727-33. PubMed ID: 3028522.
    Abstract:
    Thymic peptide thymosin alpha 1 (10(-9) to 3 X 10(-7) M) is shown to inhibit the specific binding of [125I]VIP to rat blood mononuclear cells and liver plasma membranes. Thymosin alpha 1 was 160 and 6250 times less potent that VIP at inhibiting [125I]VIP binding to blood mononuclear cells and liver plasma membranes, respectively. Thymosin alpha 1 (10(-10) to 10(-7) M) was weak in stimulating adenylate cyclase activity. Its efficacy is about 25% and 27% that of native VIP in blood mononuclear cells and liver plasma membranes, respectively. Thymosin alpha 1 may behave as a partial VIP agonist in rat.
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