Synthesis, characterization and in-vitro cytotoxic potential of sitagliptin phosphate nanoparticles against advanced breast cancer cell line - MCF-7.

Pharmaceutical substance sitagliptin has long been used to treat diabetes. However, subsequent researches have shown that sitagliptin has additional therapeutic effects. Anti-inflammatory effects are observed. Combining sitagliptin with biodegradable polymers like nanoparticles for chemotherapy may be effective. This method enhances therapeutic agent pharmacokinetics. This study tests sitagliptin (SIT) chitosan base nanoparticles against MCF-7 cancer cell lines for anti-cancer effects. Sitagliptin chitosan-based nanoparticles are tested for their ability to suppress MCF-7 cancer cell proliferation. Ionic gelation, a typical nanoparticle manufacturing method, was used. A detailed examination of the nanoparticles followed, using particle-size measurement, FTIR and SEM. Entrapment efficiency, drug-loading, and in-vitro drug release were assessed. Loaded with chitosan and sitagliptin, the nanoparticles averaged 500nm and 534nm in diameter. Sitagliptin has little effect on particle size. Chitosan-based Sitagliptin nanoparticles grew slightly, suggesting Sitagliptin is present. SIT-SC-NPs had 32% encapsulation efficiency and 30% drug content due to their high polymer-to-drug ratio. SEM analysis showed that both drug-free and sitagliptin-loaded nanoparticles are spherical, as shown by the different bands in the photos. The SIT-CS-NPs had a 120-hour release efficiency of up to 80%. This suggests that these nanoparticles could cure hepatocellular carcinoma, specifically MCF-7 cell lines.

Pre and post characterization of ODTs with emphasis on compression force and quality of super-disintegrants: In vivo analysis in healthy volunteers.

Oral dispersible tablets (ODTs) are patient compliant dosage forms which rapidly disintegrate in the mouth following active absorption with rapid onset of action. The current study was designed to resolve compression problems used for ODTs, as high compression force exhibited hardness and drug release problems. Formulations, F1-F9 were compressed at three different forces 44, 54 and 64 kN using cross-carmellose sodium (CCS) and sodium starch glycolate (SSG) and evaluated for pre and post compression. Formulations F1, F4 and F7 which were compressed at 44 kN showed hardness ranges between 5.09-6.15 with lowest DT (less than 15 s) and better LTZ release. While F2, F5 and F8 (compressed at 54 kN) demonstrated hardness in between 6.90-7.02. Similarly, F3, F6 and F9 compressed at 64 kN showed hardness values between 8.70-8.98 with increased DT and slow LTZ release. Friability results for all the formulations were within United States Pharmacopeial (USP) specifications (<1%). All formulations depicted t-test value <0.5, hence it found that all formulations showed significant statistical value within limits, however best compression force 44 kN showed low p value. It was concluded that optimized compression force for ODTs was 44 kN among all employed forces that exhibited desirable drug release.

Nanocomposite Hydrogels-A Promising Approach towards Enhanced Bioavailability and Controlled Drug Delivery.

Nanotechnology has emerged as the eminent focus of today's research to overcome challenges related to conventional drug delivery systems. A wide spectrum of novel delivery systems has been investigated to improve the therapeutic outcomes of drugs. The polymer-based nanocomposite hydrogels (NCHs) that have evolved as efficient carriers for controlled drug delivery are of particular interest in this regard. Nanocomposites amalgamate the properties of both nanoparticles (NPs) as well as hydrogels, exhibiting superior functionalities over conventional hydrogels. This multiple functionality is based upon advanced mechanical, electrical, optical as well as magnetic properties. Here is a brief overview of the various types of nanocomposites, such as NCHs based on Carbon-bearing nanomaterials, polymeric nanoparticles, inorganic nanoparticles, and metal and metal-oxide NPs. Accordingly, this article will review numerous ways of preparing these NCHs with particular emphasis on the vast biomedical applications displayed by them in numerous fields such as tissue engineering, drug delivery, wound healing, bioprinting, biosensing, imaging and gene silencing, cancer therapy, antibacterial therapy, etc. Moreover, various features can be tuned, based on the final application, by controlling the chemical composition of hydrogel network, which may also influence the released conduct. Subsequently, the recent work and future prospects of this newly emerging class of drug delivery system have been enlisted.