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Indian Journal of Experimental Biology (IJEB) >
IJEB Vol.44 [2006] >
IJEB Vol.44(08) [August 2006] >
| Title: | Does melatonin have a time-dependent effect on brain and gill ionic metabolism in a teleost, Anabas testudineus (Bloch)? |
| Authors: | Divya, L
Vijayasree, A S
Sreejith, P
Beyo, R S
Smita, M
Oommen, O V |
| Keywords: | Brain
Ca2+ ATPase
Gills
Melatonin
Na+
K+ ATPase
Teleost |
| Issue Date: | Aug-2006 |
| Publisher: | CSIR |
| Abstract: | Exogenous administration of 0.20, 0.40 and 0.60 μg/g body
weight melatonin over a 24 hr cycle caused an inhibition of Na+, K+
ATPase activity in both brain and gills of A.
testudineus. However, Ca2+ ATPase activity in the brain was
significantly inhibited by the highest dose, and that in the gill at all the
doses of melatonin. Evening injection of melatonin had an inhibitory effect on
both brain and gill Na+ K+ and Ca2+ ATPase
activity. Melatonin treatment in the morning for 12 hrs did not have an effect
on brain Na+, K+ ATPase, while Ca2+ ATPase was
inhibited. Similar treatment stimulated Na+, K+ and Ca2+
ATPase activity in the gills. Sodium, potassium and calcium ions in the gill
were significantly reduced in the evening treated group while no change was observed
in the morning melatonin injected group. The results suggest that melatonin
elicits a time - dependent effect on the enzymes and ionic content in the brain
and gills of A. testudineus. |
| Page(s): | 635-639 |
| ISSN: | 0975-1009 (Online); 0019-5189 (Print) |
| Source: | IJEB Vol.44(08) [August 2006]
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