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Abstract Title:

Colon targeted curcumin delivery using guar gum.

Abstract Source:

Drugs Aging. 2007;24(11):945-55. PMID: 20614824

Abstract Author(s):

Edwin J Elias, Singhal Anil, Showkat Ahmad, Anwar Daud

Article Affiliation:

TIFAC-CORE in Green Pharmacy, B. R. Nahata College of Pharmacy, Mhow-Neemuch Road, Mandsaur - 458001, Madhya Pradesh, India. ejeru@rediffmail.com

Abstract:

Curcumin is used in the treatment of colon cancer, but its very poor absorption in the upper part of the GIT is a major concern. As a site for drug delivery, the colon offers a near neutral pH, reduced digestive enzymatic activity, a long transit time and an increased responsiveness to absorption enhancers. The aim of the present study was to identify a suitable polymer (guar gum) based matrix tablet for curcumin with sufficient mechanical strength and promising in vitro mouth-to-colon release profile. Three formulations of curcumin were prepared using varying concentrations of guar gum containing 50 mg curcumin by the wet granulation method. Tablets were subjected to evaluation by studying parameter like hardness, friability, drug content uniformity, and in-vitro drug release. In vitro drug release was evaluated using simulated stomach, intestinal and colonic fluids. The susceptibility of guar gum to colonic bacteria was also assessed by a drug release study with rat caecal contents. The 40% guar gum containing formulation (F-1) showed better drug release (91.1%) after 24 hours in the presence of rat caecal contents in comparison with the 50% guar gum containing formulation (F-2) (82.1%). Curcumin could, thus, be positively delivered to the colon for effective colon cancer treatment using guar gum.

Study Type : Animal Study

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Sayer Ji
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