Improvement of Dissolution Rate of Gliclazide Using Solid Dispersions with Aerosil 380 and Its Effect on Alloxan Induced Diabetic Rats - Pharmacology & Pharmacy

PP > Vol.10 No.8, August 2019

Improvement of Dissolution Rate of Gliclazide Using Solid Dispersions with Aerosil 380 and Its Effect on Alloxan Induced Diabetic Rats ()

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DOI: 10.4236/pp.2019.108030 793 Downloads 1,790 Views Citations

Author(s)

Subrata Paul^1*, Md. Nur Islam^1*, Md. Ashraf Ali², Ranjan Kumar Barman¹, Mir Imam Ibne Wahed¹, Bytul M. Rahman¹

Affiliation(s)

¹Department of Pharmacy, Faculty of Science, Rajshahi University, Rajshahi, Bangladesh.
²Department of Pharmacy, Faculty of Life Science, Mawlana Bhashani Science and Technology University, Tangail, Bangladesh.

ABSTRACT

The main objective of this research is to conduct a comprehensive study for enhancing the aqueous solubility of poorly water soluble gliclazide using hydrophilic fumed silica particles (Aerosil^® 380) and evaluating the influence of silica on drug release profile and pharmacological activity on alloxan induced diabetic rats. Solid dispersions (SD’s) of gliclazide were prepared using solvent evaporation method. The dissolution profiles and solid state characterization of the SD’s prepared were all evaluated. The dissolution rate of gliclazide in the SD’s with fumed silica (weight ratio, 1:1) was approximately 38%, which is about 10 fold higher than that of the pure drug after 30 min. After forming the SD’s, gliclazide changed into an amorphous state, which can infer from differential scanning calorimetry (DSC) and powder X-ray diffraction (PXRD). Fourier transform infrared spectroscopy (FTIR) also revealed the formation of weak hydrogen bonding through the interactions between the secondary amine groups of gliclazide and silanol groups of silica particles in the SD’s. The rapid dissolution rate from the SD’s might be attributed to the amorphization of drug, improved specific surface area and wettability than the original drug crystals. Further, we investigated the antidiabetic effects of SD’s of gliclazide in alloxan induced diabetic rats. The SD’s of gliclazide decrease the blood glucose level 64% whereas the conventional gliclazide decreases only 37% in diabetic rats. Lipid profiles, kidney and liver functions are remarkably improved in diabetic rat treated with SD’s of gliclazide than that of conventional gliclazide. These results suggest that SD’s of gliclazide have much more bioavailability and hence are more pharmacologically active than that of conventional gliclazide form.

KEYWORDS

In-Vitro Dissolution, Fumed Silica, Solid Dispersions, Gliclazide, Alloxan, Diabetes

Share and Cite:

Paul, S. , Islam, M. , Ali, M. , Barman, R. , Wahed, M. and Rahman, B. (2019) Improvement of Dissolution Rate of Gliclazide Using Solid Dispersions with Aerosil 380 and Its Effect on Alloxan Induced Diabetic Rats. Pharmacology & Pharmacy, 10, 365-385. doi: 10.4236/pp.2019.108030.

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