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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
pharmacology, toxicology and pharmaceutics
Nigella sativa inhibits intestinal glucose absorption and improves glucose tolerance in rats
Journal of Ethnopharmacology, Volume 121, No. 3, Year 2009
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Description
Aim of the study: Nigella sativa L. (Ranunculaceae) seeds have been used traditionally for centuries, notably for treating diabetes. Materials and methods: We studied the effects of the crude aqueous extract of Nigella sativa seeds on intestinal glucose absorption in vitro using a short-circuit current technique and in vivo using an oral glucose tolerance test. Results: The aqueous extract of Nigella sativa (0.1 pg/ml to 100 ng/ml) exerted dose-dependent inhibition of sodium-dependent glucose transport across isolated rat jejunum. Maximal inhibition exceeded 80% and IC50 was close to 10 pg/ml. An oral glucose tolerance test was carried out in rats after the initial dose and after a 6-week treatment of Nigella sativa (2 g/(kg day)), and compared to metformin (300 mg/(kg day)). Chronic Nigella sativa treatment improved glucose tolerance as efficiently as metformin. Nigella sativa and metformin also reduced body weight without any toxic effect. Conclusions: To our knowledge, this is the first demonstration that Nigella sativa directly inhibits the electrogenic intestinal absorption of glucose in vitro. Together with the observed improvement of glucose tolerance and body weight in rats after chronic oral administration in vivo, these effects further validate the traditional use of Nigella sativa seeds against diabetes. © 2008 Elsevier Ireland Ltd. All rights reserved.
Authors & Co-Authors
Meddah, Bouchra
Morocco, Rabat
Faculté de Médecine et de Pharmacie de Rabat
France, Paris
Université Paris Cité
Ducroc, Robert A.
France, Paris
Centre de Recherche Biomédicale Bichat-beaujon
Faouzi, Moulay El Abbes
Morocco, Rabat
Faculté de Médecine et de Pharmacie de Rabat
Eto, B.
France, Paris
Université Paris Cité
Mahraoui, Lahcen
France, Paris
Université Paris Cité
Benhaddou-Andaloussi, Ali
Morocco, Rabat
Faculté de Médecine et de Pharmacie de Rabat
Canada, Montreal
Faculty of Medicine
Martineau, Louis Charles
Canada, Montreal
Faculty of Medicine
Cherrah, Yahya
Morocco, Rabat
Faculté de Médecine et de Pharmacie de Rabat
Haddad, Pierre Sélim
Canada, Montreal
Faculty of Medicine
Statistics
Citations: 221
Authors: 9
Affiliations: 4
Identifiers
Doi:
10.1016/j.jep.2008.10.040
ISSN:
03788741
Research Areas
Environmental
Health System And Policy
Noncommunicable Diseases