Role of calcium in melanosome aggregation withinLabeo melanophores |
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| Authors: | Shashi Patil Ajaik Jain |
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| Institution: | (1) Pigment Cell Biology Unit, School of Studies in Zoology, Jiwaji University, 474 011 Gwalior, India |
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| Abstract: | In isolated scale melanophores ofLabeo rohita the melanosome aggregating effect of K+ was inhibited in Ca2+ deprived medium. Moreover, the Ca2+-antagonists, verapamil and lanthanum inhibited the action of K+ in concentration dependent manner. The elevation of extracellular Ca2+ could compromise the verapamil induced inhibition in a concentration dependent manner. The cation Ca2+ appeared to be required only for K+ -induced aggregation and not melanosome aggregationper se, as in this fish adrenaline and melanin concentrating hormone effectively caused aggregation of melanosomes in Ca2+ free medium |
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| Keywords: | Verapamil lanthanum melanophore melanosome aggregation melanosome dispersion Ca2+ K+ |
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