EFFECT OF THE AQUEOUS EXTRACT OF CLERODENDRUM THOMSONIAE LINN (VERBENACEAE) LEAVES ON TYPE 2 DIABETIC WISTAR RATS INDUCED BY THE MACAPOS1 TYPE DIET AND DEXAMETHASONE

  • Eric Martial Deutchoua Ngounou Health Medicinal Plant Laboratory and Galenic Formulation, Department of Biological Sciences, Faculty of Science, University of Ngaoundere- PO BOX 454, Ngaoundere-Cameroon. Laboratory of Biophysics and Food Biochemistry and Nutrition, Department of Food Science and Nutrition, ENSAI, University of Ngaoundere- PO BOX 455, Ngaoundere -Cameroon.
  • Yannick Dimitry Mang Department of Tourism and Hotel management, Higher Technical Teachers’ Training College, University of Yaounde I-PO BOX 886, Ebolowa-Cameroon. Laboratory of Biophysics and Food Biochemistry and Nutrition, Department of Food Science and Nutrition, ENSAI, University of Ngaoundere- PO BOX 455, Ngaoundere -Cameroon.
  • Faustin Dongmo Department of Tourism and Hotel management, Higher Technical Teachers’ Training College, University of Yaounde I-PO BOX 886, Ebolowa-Cameroon. Laboratory of Biophysics and Food Biochemistry and Nutrition, Department of Food Science and Nutrition, ENSAI, University of Ngaoundere- PO BOX 455, Ngaoundere -Cameroon.
  • Oumar Waassili Ibrahim Malla Laboratory of Animal Physiology, Department of Biology and Animal Physiology, Faculty of Science, University of Yaounde 1-PO BOX 812, Yaounde-Cameroon.
  • Sélestin Sokeng Dongmo Health Medicinal Plant Laboratory and Galenic Formulation, Department of Biological Sciences, Faculty of Science, University of Ngaoundere- PO BOX 454, Ngaoundere-Cameroon.
  • Nicolas Njintang Yanou Health Medicinal Plant Laboratory and Galenic Formulation, Department of Biological Sciences, Faculty of Science, University of Ngaoundere- PO BOX 454, Ngaoundere-Cameroon.Laboratory of Biophysics and Food Biochemistry and Nutrition, Department of Food Science and Nutrition, ENSAI, University of Ngaoundere- PO BOX 455, Ngaoundere -Cameroon.

Abstract

Aim and objective: Clerodendrum thomsoniae leaves are used in Cameroon to manage diabetes and its related disorders. The study aimed at investigating the antidiabetic effect of the aqueous extract on diet and dexamethasone induced diabetic rats.


Methods: Young mature leaves of C thomsoniae were dried, finely powdered and submitted to aqueous extraction. The dehydrated extract was tested in rats at 3 doses 312.5, 625 and 1250 mg/kg based on the local use of the plant. The effect of the extract on the fasting blood glucose in normoglycemic rats and MACAPOS 1 type diet induced diabetic rats, using respectively glibenclamide and metformin as positive control groups, were investigated.


Results: AECT significantly reduced blood glucose levels in normoglycemic rats (p<0.05) two hours after administration, from 83±2 mg/dL to 57.39±1.7 mg/dL with the dose of 1250 mg/kg. given the highest reduction rate of 30.86%. In normoglycemic rats 30 minutes after oral glucose overload, the maximum reduction rate was observed with glibenclamide 5 mg / kg and calculated at 49.90% followed by 36.39%, for the extract at 1250 mg / kg. After 30 days of repeated oral administration, AECT produced a reduction on blood glucose levels (p<0.05) in type 2 diabetic rats. This reduction in blood sugar was much more expressed with the dose of 1250mg/kg (73.52±0.71 mg/dL) followed by metformin 38mg/kg (70.21±0.89 mg/dL) as the normal control with no significant difference (P < 0.05).


Conclusion: These results show that the antidiabetic activity of AECT can be explained by insulin stimulating effect, also give support to the traditional use of this plant.


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Peer Review History:


Received 11 May 2021; Revised 17 June; Accepted 27 June, Available online 15 July 2021


Academic Editor: Dr. Asia Selman Abdullahorcid22.jpg,  Al-Razi university, Department of Pharmacy, Yemen, asia_abdullah65@yahoo.com


UJPR follows the most transparent and toughest ‘Advanced OPEN peer review’ system. The identity of the authors and, reviewers will be known to each other. This transparent process will help to eradicate any possible malicious/purposeful interference by any person (publishing staff, reviewer, editor, author, etc) during peer review. As a result of this unique system, all reviewers will get their due recognition and respect, once their names are published in the papers. We expect that, by publishing peer review reports with published papers, will be helpful to many authors for drafting their article according to the specifications. Auhors will remove any error of their article and they will improve their article(s) according to the previous reports displayed with published article(s). The main purpose of it is ‘to improve the quality of a candidate manuscript’. Our reviewers check the ‘strength and weakness of a manuscript honestly’. There will increase in the perfection, and transparency. 


Received file:blue_23983.gif                Reviewer's Comments:download_logo_r_29189.gif


Average Peer review marks at initial stage: 6.5/10


Average Peer review marks at publication stage: 8.0/10


Reviewer(s) detail:


Dr. Terhemen Festus Swemorcid22.jpg, Department of Veterinary Physiology and Biochemistry, College of Veterinary Medicine, Federal University of Agriculture, Makurdi, Benue State, Nigeria, swemfestus422@gmail.com


Taha A.I. El Bassossyorcid22.jpgMedicinal and Aromatic Plants Department, Desert Research Center, Cairo, Egypt, tahachemist2008@gmail.com


Prof. Dr. Ali Gamal Ahmed Al-kaforcid22.jpg, Sana'a university, Yemen, alialkaf21@gmail.com


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Keywords: antidiabetic, aqueous extract, Clerodendrum thomsoniae leaves, Dexamethasone, hypoglycemic, MACAPOS 1 diet

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How to Cite
Ngounou, E. M. D., Y. D. Mang, F. Dongmo, O. W. I. Malla, S. S. Dongmo, and N. N. Yanou. “EFFECT OF THE AQUEOUS EXTRACT OF CLERODENDRUM THOMSONIAE LINN (VERBENACEAE) LEAVES ON TYPE 2 DIABETIC WISTAR RATS INDUCED BY THE MACAPOS1 TYPE DIET AND DEXAMETHASONE”. Universal Journal of Pharmaceutical Research, Vol. 6, no. 3, July 2021, doi:https://doi.org/10.22270/ujpr.v6i3.601.
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Research Articles