Balarama Kaimal,S; Gireesh,G; Paulose,C S(Department of Biotechnology, January 4, 2007)
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Abstract:
Gamma amino outyric acid is a major
inhibitory neurotrarsr titter in the central nervous
system. In the preset study sv, Have investigate(' the
alteration of GABA receptor, In t he hrain stem of rats
during pancreatic regeneration. Three groups of rats
were used for the study: sham operated, 72 It and
7 days partially pancreatectonnsea. GABA was (juan-
(ified by [H]GABA receptor iispiacement method.
GABA receptor kin: 10, pat at i et•ers were studied by
using the binding of F'.](iAhA as ligand to the Triton
X-100 treated me,i1,;-:mes a1,J displacement with
unlabelled GABA. GhRA,v receptor activity was
studied by using the [` -1 h3cuculline and displacement
with unlabellecV euculline. ;.\13A content significantly
decreased (1' < (1.(101 ) it, 0-e brain stern during
the regeneration of pancreas. 'I hl, high affinity (IAI3A
receptor binding sho?:ed it sigii'f cant decrease in 131„.,\
(P < 11.01) and K,I 1).05) n 72 h and 7 days after
partial pancreatee 'timv. ";:flhicuculline hin(Iing
showed it signih eat, 'le ( r(, :,e in /Jn1,s and K,I
(P < 0.001) in 72 h pa^.rcreaw,, mised rats when compared
with sham wt--tt' as P,n and K,I reversed to
near sham after 7 da,s of pancreatectomv. The results
sugge,) that GAB A throur,r; ('GABA receptors in
brain Atcem has a regulatory uie during active regeneration
of pancreas which will have inunense clinical
significance in the treatment of cliahetcs.
Sherin, Antony; Dr. Paulose, C S(Cochin University of Science & Technology, May , 2010)
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Abstract:
In the present study, a detailed investigation on the alterations of
muscarinic M1, M3, α7 nicotinic acetylcholine receptor (α7 nAchR), GABA
receptors and its subtypes; GABAAα1 and GABAB in the brain regions of
streptozotocin induced diabetic and insulin induced hypoglycemic rats were
carried out. Gene expression of acetylcholine esterase (AChE), choline
acetyltransferase (ChAT), GAD, GLUT3, Insulin receptor, superoxide dismutase
(SOD), Bax protein, Phospholipase C and CREB in hypoglycemic and
hyperglycemic rat brain were studied. Muscarinic M1, M3 receptors, AChE,
ChAT, GABAAα1, GABAB, GAD, Insulin receptor, SOD, Bax protein and
Phospholipase C expression in pancreas was also carried out. The molecular
studies on the CNS and PNS damage will elucidate the therapeutic role in the
corrective measures of the damage to the brain during hypoglycemia and
hyperglycemia.
Description:
Department of Biotechnology,Cochin University of Science and Technology