Bromocriptine, a Dopamine (D2 ) Receptor Agonist, Used Alone and in Combination with Glipizide in Sub–Therapeutic Doses to Ameliorate Hyperglycaemia

Introduction: Bromocriptine, an ergot derivative, is an agonist at the dopamine 2 receptor and a sympatholytic. It is a well established drug in Parkinsonism, hyperprolactinaemia and acromegaly and it has various other clinical indications like induction of ovulation in female infertility. Bromo...

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Main Authors: Harish Kumar V.S., Vinutha M.B., Pradeep A.N., Sathisha Aithal, Sindhura Reddy Baleed, Umakant N. Patil
Format: Article
Language:English
Published: JCDR Research and Publications Private Limited 2013-09-01
Series:Journal of Clinical and Diagnostic Research
Subjects:
Online Access:https://jcdr.net/articles/PDF/3347/21-%205803_E(C)_F(T)_PF1(Pr._P)_PFA(P.r_P)pdf.pdf
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author Harish Kumar V.S.
Vinutha M.B.
Pradeep A.N.
Sathisha Aithal
Sindhura Reddy Baleed
Umakant N. Patil
author_facet Harish Kumar V.S.
Vinutha M.B.
Pradeep A.N.
Sathisha Aithal
Sindhura Reddy Baleed
Umakant N. Patil
author_sort Harish Kumar V.S.
collection DOAJ
description Introduction: Bromocriptine, an ergot derivative, is an agonist at the dopamine 2 receptor and a sympatholytic. It is a well established drug in Parkinsonism, hyperprolactinaemia and acromegaly and it has various other clinical indications like induction of ovulation in female infertility. Bromocriptine has been evaluated in alloxan induced diabetic rats for its antihyperglycaemic effect with and without simultaneous use of glipizide. Methods: Diabetes was induced in albino rats by giving a single subcutaneous injection of alloxan in a dose of 150 mg/kg body weight. After 72 hours of giving alloxan injection, depending upon their blood glucose levels (350mg/dl and above), the rats were included into the study and they were divided into four groups, each comprising of 6 rats (n=24): Group 1 which was taken as control was given distilled water. Group 2 was treated with glipizide, a standard drug. Group 3 was treated with the test drug, bromocriptine and Group 4 was treated with sub therapeutic doses of test and standard drugs. The drugs were given to the diabetic rats once daily by oral route for 30 consecutive days, in order to assess their effects in terms of reduction in blood glucose levels. Blood glucose was estimated on 0th, 10th, 20th and 30th days of the study at fixed time intervals. Results and Conclusion: Bromocriptine, which was used alone, lowered the blood glucose levels appreciably; whereas the concomitant administration of bromocriptine and glipizide in sub therapeutic doses produced a much more appreciable reduction. The results which were obtained in the group which received simultaneous administration of test and standard drugs in sub therapeutic doses were comparable to those of the group which received reference drug, glipizide. Hence, it can be concluded that bromocriptine may serve as a valuable adjunct to available anti-diabetic medication.
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spelling doaj.art-21c78dc4f79d46558c9f9335e7eb4dd52022-12-21T23:48:55ZengJCDR Research and Publications Private LimitedJournal of Clinical and Diagnostic Research2249-782X0973-709X2013-09-01791904190710.7860/JCDR/2013/5803.3347Bromocriptine, a Dopamine (D2 ) Receptor Agonist, Used Alone and in Combination with Glipizide in Sub–Therapeutic Doses to Ameliorate HyperglycaemiaHarish Kumar V.S.0Vinutha M.B.1Pradeep A.N.2Sathisha Aithal3Sindhura Reddy Baleed4Umakant N. Patil5Assistant Professor, Department of Pharmacology, S S Institute of Medical Sciences & Research Centre Davanagere, Karnataka, India.Phase III MBBS Student, Department of Pharmacology, S S Institute of Medical Sciences & Research Centre Davanagere, Karnataka, India.Assistant Professor, Department of Pharmacology, S S Institute of Medical Sciences & Research Centre Davanagere, Karnataka, India.Associate Professor, Department of Pharmacology, S S Institute of Medical Sciences & Research Centre Davanagere, Karnataka, India.Phase III MBBS Student, Department of Pharmacology, S S Institute of Medical Sciences & Research Centre Davanagere, Karnataka, India.Professor & HOD, Department of Pharmacology, S S Institute of Medical Sciences & Research Centre Davanagere, Karnataka, India.Introduction: Bromocriptine, an ergot derivative, is an agonist at the dopamine 2 receptor and a sympatholytic. It is a well established drug in Parkinsonism, hyperprolactinaemia and acromegaly and it has various other clinical indications like induction of ovulation in female infertility. Bromocriptine has been evaluated in alloxan induced diabetic rats for its antihyperglycaemic effect with and without simultaneous use of glipizide. Methods: Diabetes was induced in albino rats by giving a single subcutaneous injection of alloxan in a dose of 150 mg/kg body weight. After 72 hours of giving alloxan injection, depending upon their blood glucose levels (350mg/dl and above), the rats were included into the study and they were divided into four groups, each comprising of 6 rats (n=24): Group 1 which was taken as control was given distilled water. Group 2 was treated with glipizide, a standard drug. Group 3 was treated with the test drug, bromocriptine and Group 4 was treated with sub therapeutic doses of test and standard drugs. The drugs were given to the diabetic rats once daily by oral route for 30 consecutive days, in order to assess their effects in terms of reduction in blood glucose levels. Blood glucose was estimated on 0th, 10th, 20th and 30th days of the study at fixed time intervals. Results and Conclusion: Bromocriptine, which was used alone, lowered the blood glucose levels appreciably; whereas the concomitant administration of bromocriptine and glipizide in sub therapeutic doses produced a much more appreciable reduction. The results which were obtained in the group which received simultaneous administration of test and standard drugs in sub therapeutic doses were comparable to those of the group which received reference drug, glipizide. Hence, it can be concluded that bromocriptine may serve as a valuable adjunct to available anti-diabetic medication.https://jcdr.net/articles/PDF/3347/21-%205803_E(C)_F(T)_PF1(Pr._P)_PFA(P.r_P)pdf.pdfbromocriptineanti-hyperglycaemicglipizidealloxan
spellingShingle Harish Kumar V.S.
Vinutha M.B.
Pradeep A.N.
Sathisha Aithal
Sindhura Reddy Baleed
Umakant N. Patil
Bromocriptine, a Dopamine (D2 ) Receptor Agonist, Used Alone and in Combination with Glipizide in Sub–Therapeutic Doses to Ameliorate Hyperglycaemia
Journal of Clinical and Diagnostic Research
bromocriptine
anti-hyperglycaemic
glipizide
alloxan
title Bromocriptine, a Dopamine (D2 ) Receptor Agonist, Used Alone and in Combination with Glipizide in Sub–Therapeutic Doses to Ameliorate Hyperglycaemia
title_full Bromocriptine, a Dopamine (D2 ) Receptor Agonist, Used Alone and in Combination with Glipizide in Sub–Therapeutic Doses to Ameliorate Hyperglycaemia
title_fullStr Bromocriptine, a Dopamine (D2 ) Receptor Agonist, Used Alone and in Combination with Glipizide in Sub–Therapeutic Doses to Ameliorate Hyperglycaemia
title_full_unstemmed Bromocriptine, a Dopamine (D2 ) Receptor Agonist, Used Alone and in Combination with Glipizide in Sub–Therapeutic Doses to Ameliorate Hyperglycaemia
title_short Bromocriptine, a Dopamine (D2 ) Receptor Agonist, Used Alone and in Combination with Glipizide in Sub–Therapeutic Doses to Ameliorate Hyperglycaemia
title_sort bromocriptine a dopamine d2 receptor agonist used alone and in combination with glipizide in sub therapeutic doses to ameliorate hyperglycaemia
topic bromocriptine
anti-hyperglycaemic
glipizide
alloxan
url https://jcdr.net/articles/PDF/3347/21-%205803_E(C)_F(T)_PF1(Pr._P)_PFA(P.r_P)pdf.pdf
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