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In vitro effect of methionine-enkephalin and thymosin on murine expression of Thy1-2 antigen
J Chakir1, M Rouabhia, P Deschaux
1Laboratory of Animal Physiology, General and Comparative Immunology, University of Limoges, France.
The present study investigates the in vitro effect of methionine-enkephalin (Met-Enk) on Thy1-2 antigen density and the interaction between this opioid peptide and a thymic hormone (thymosin fraction V (TFV]. In vitro, it was found that Met-Enk at various concentrations (28.10(-11), 28.10(-10), 28.10(-9) and 28.10(-8) M) had an increased positive effect on the Thy1-2 antigen density of Balb/C mouse thymocytes. This action was observed at all concentrations of Met-Enk. The addition of TFV to Met-Enk thymocyte cultures showed an additive effect of these two hormones. The physiological significance of these observations is that they indicate an interaction between immune and endocrine system functions.
The present study investigates the in vitro effect of methionine-enkephalin (Met-Enk) on Thy1-2 antigen density and the interaction between this opioid peptide and a thymic hormone (thymosin fraction V (TFV]. In vitro, it was found that Met-Enk at various concentrations (28.10(-11), 28.10(-10), 28.10(-9) and 28.10(-8) M) had an increased positive effect on the Thy1-2 antigen density of Balb/C mouse thymocytes. This action was observed at all concentrations of Met-Enk. The addition of TFV to Met-Enk thymocyte cultures showed an additive effect of these two hormones. The physiological significance of these observations is that they indicate an interaction between immune and endocrine system functions.