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Thyroxin specifically stimulates anuran larvae epidermal sodium pump during metamorphosis
1Departamento de Biologia Celular, Facultad de Ciencias, Universidad de Córdoba, Spain.
Abstract:
1. Sodium pump, measured as K+-dependent, ouabain sensitive pNPPase, but not the non-specific, ouabain insensitive pNPPase, was stimulated by thyroxin in epidermis of tadpoles of Rana perezi. 2. Epidermal K+-pNPPase of thyroxin treated tadpoles was only stimulated in those stages already showing activity and reached levels similar to adult frogs in tadpoles at metamorphic climax.