Effect of prolactin on human red cell sodium transport |
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Authors: | V. Gopalakrishnan S. Ramaswamy N. Padmanabha Pillai S. Ranganathan M. N. Ghosh |
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Affiliation: | (1) Department of Pharmacology and Department of Biochemistry, Jawaharlal Institute of Postgraduate Medical Education and Research, 605006 Pondicherry, (India) |
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Abstract: | Summary Incubation of red cells with higher concentrations of prolactin in vitro enhanced the cellular sodium level and produced a significant reduction in erythrocyte membrane adenosine triphosphatase activity. This effect was dose and time-dependent. It is the result of an inhibition of the active sodium pump similar to that produced by ouabain, suggesting altered red cell function and electrolyte balance in hyperprolactinemic states.Acknowledgments. Ovine prolactin was generously supplied by Ferring (Malmö, Sweden) and NPA, NIH (Maryland, USA). Thanks are also due to Prof. S. Dutta, Wayne State University, Detroit, for the gift, of ouabain octahydrate and Dr M. Ramachandran and Prof. S. Ramakrishnan, Department of Biochemistry, JIPMER, Pondicherry, for their encouragement and keen interest in this study. |
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