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Responses of the Ultimobranchial Gland to Vitamin D 3 Treatment in Freshwater Mud Eel, Amphipnous cuchia , Kept in Different Calcium Environments
Author(s) -
Srivastav A. K.,
Tiwari P. R.,
Srivastav S. K.,
Suzuki N.
Publication year - 2002
Publication title -
anatomia, histologia, embryologia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.34
H-Index - 35
eISSN - 1439-0264
pISSN - 0340-2096
DOI - 10.1046/j.1439-0264.2002.00364.x
Subject(s) - calcium , hypercalcaemia , vitamin , endocrinology , vitamin d and neurology , medicine , cholecalciferol , biology , low calcium , chemistry
Freshwater mud eel, Amphipnous cuchia , were injected intraperitoneally daily with 100 ng of vitamin D 3 /100 g body weight and maintained in media containing either no calcium or different calcium concentrations. The eels were killed after 1, 3, 5, 10 and 15 days following the treatment and their serum calcium levels were measured. The ultimobranchial glands were fixed and processed using the routine paraffin method for histological studies. The results of the present study indicate that vitamin D 3 can induce hypercalcaemia in eels kept in different calcium environments. Also, the ultimobranchial glands became hyperactive following vitamin D 3 treatment. It is concluded that in mud eels, the gland has a calcium‐regulating function.