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1.
Indian J Physiol Pharmacol ; 39(3): 279-82, 1995 Jul.
Article in English | MEDLINE | ID: mdl-8550126

ABSTRACT

Effect of single graded doses of amitriptyline (4, 8 and 16, mg/kg, p.o.) were observed on blood glucose level in 18 h fasted albino rabbits. All the doses of Amitriptyline produced significant hyperglycemia at 4 h, which attained a peak at 24 h with 16 mg/kg dose and appears to be due to blockade of the uptake of monominergic transmitters across the axoplasmic membrane, It (16 mg/kg) also produced glucose intolerance during early hours probably due to interference with gastrin function.


Subject(s)
Amitriptyline/pharmacology , Antidepressive Agents, Tricyclic/pharmacology , Blood Glucose/metabolism , Animals , Female , Glucose Tolerance Test , Homeostasis/drug effects , Male , Rabbits
2.
Indian J Physiol Pharmacol ; 37(2): 155-7, 1993 Apr.
Article in English | MEDLINE | ID: mdl-8225548

ABSTRACT

Blood glucose level was estimated in 18 h fasted albino rabbits following acute feeding of graded doses of mianserin. Mianserin (6.0 mg/kg) produced a gradually increasing hyperglycemic effect which became significant (P < 0.01) at 10 h and onwards. This appears to be due to increased turnover and release of noradrenaline by the drug. The same dose of mianserin also produced glucose intolerance during early hours probably by interfering with gastrin functions.


Subject(s)
Blood Glucose/drug effects , Mianserin/toxicity , Animals , Female , Glucose Tolerance Test , Homeostasis/drug effects , Hyperglycemia/chemically induced , Male , Norepinephrine/metabolism , Rabbits
3.
Methods Find Exp Clin Pharmacol ; 14(1): 61-71, 1992.
Article in English | MEDLINE | ID: mdl-1619970

ABSTRACT

Blood glucose level (BGL) was estimated up to 4 h (3 h in case of GTT) in 18-h fasted albino rabbits following acute and chronic (one month) feeding of doxepin and thereafter for another 8 days together with either insulin or glibenclamide or adrenaline. A single dose of doxepin produced significant hypoglycemia which peaked at 4 h and lasted up to 10 h. On chronic doxepin feeding there was complete attenuation of initial hypoglycemia on the 7th and 14th days, culminating into frank hyperglycemia on the 21st day. However, there was complete recovery on the 29th day exhibiting tolerance to initial hypo-as well as delayed hyperglycemia. Similarly, glucose intolerance was accentuated on the 8th day followed by a gradual recovery on the 15th and 22nd days, culminating in disappearance of glucose intolerance on the 30th day. The hypoglycemic effect of insulin was markedly potentiated in chronically doxepin fed animals which was further enhanced on continuing administration of both agents. Profound hypoglycemia was observed during GTT in such animals. The hyperglycemic effect of adrenaline was enhanced in chronically doxepin fed animals, which may be due to TCA induced enhancement of the response of exogenous adrenaline. Suppression of this hyperglycemia with continued administration of both drugs seems to be due to subsensitivity of alpha 2-adrenoceptors. Additive hyperglycemia was observed during GTT in such animals.


Subject(s)
Blood Glucose/metabolism , Doxepin/pharmacology , Homeostasis/drug effects , Animals , Doxepin/administration & dosage , Drug Synergism , Female , Glucose Tolerance Test , Hyperglycemia/chemically induced , Hypoglycemia/chemically induced , Male , Rabbits
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