Bioadhesive Controlled Metronidazole Release Matrix Based on Chitosan and Xanthan Gum

被引:28
作者
Eftaiha, Ala'a F. [4 ]
Qinna, Nidal [3 ,4 ]
Rashid, Iyad S. [4 ]
Al Remawi, Mayyas M. [4 ]
Al Shami, Munther R. [1 ]
Arafat, Tawfiq A. [2 ]
Badwan, Adnan A. [1 ]
机构
[1] Jordanian Pharmaceut Mfg Co, Naur, Jordan
[2] Jordan Ctr Pharmaceut Res, Amman, Jordan
[3] Petra Univ, Fac Pharm & Med Sci, Amman, Jordan
[4] Suwagh Co Drug Delivery Syst, Naur, Jordan
关键词
metronidazole; chitosan; xanthan gum; bioadhesion; bioavailability; DRUG-DELIVERY; SODIUM ALGINATE; DOSAGE FORMS; TABLETS; RESISTANCE; POLYSACCHARIDE; RATIONALE; HYDROGELS; CELLULOSE; THERAPY;
D O I
10.3390/md8051716
中图分类号
R914 [药物化学];
学科分类号
100701 ;
摘要
Metronidazole, a common antibacterial drug, was incorporated into a hydrophilic polymer matrix composed of chitosan xanthan gum mixture. Hydrogel formation of this binary chitosan-xanthan gum combination was tested for its ability to control the release of metronidazole as a drug model. This preparation (MZ-CR) was characterized by in vitro, ex vivo bioadhesion and in vivo bioavailability study. For comparison purposes a commercial extended release formulation of metronidazole (CMZ) was used as a reference. The in vitro drug-release profiles of metronidazole preparation and CMZ were similar in 0.1 M HCl and phosphate buffer pH 6.8. Moreover, metronidazole preparation and CMZ showed a similar detachment force to sheep stomach mucosa, while the bioadhesion of the metronidazole preparation was higher three times than CMZ to sheep duodenum. The results of in vivo study indicated that the absorption of metronidazole from the preparation was faster than that of CMZ. Also, MZ-CR leads to higher metronidazole C-max and AUC relative to that of the CMZ. This increase in bioavailability might be explained by the bioadhesion of the preparation at the upper part of the small intestine that could result in an increase in the overall intestinal transit time. As a conclusion, formulating chitosan-xanthan gum mixture as a hydrophilic polymer matrix resulted in a superior pharmacokinetic parameters translated by better rate and extent of absorption of metronidazole.
引用
收藏
页码:1716 / 1730
页数:15
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