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Home » Archives for Gita Shankar
Gita Shankar

Gita Shankar

Director, Formulations R&D, Pharmaceutical Sciences
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Publications

Biomedical sciences publications December 1, 2015

Monocyte Chemotactic Protein-Induced Protein 1 and 4 Form a Complex but Act Independently in Regulation of Interleukin-6 mRNA Degradation

Gita Shankar

Here we report that MCPIP1 interacts with MCPIP4 to form a protein complex but they act independently in regulation of IL-6 mRNA degradation.

Biomedical sciences publications September 1, 2015

SR-2P vaginal microbicide gel provides protection against herpes simplex virus 2 when administered as a combined prophylactic and postexposure therapeutic

Gita Shankar

Here, we show that a dose of SR-2P administered 24 h prior to infection provides some protection against the virus, but to a lesser degree than SR-2P administered either once a day for 2 days or 1 h prior to infection.

Biomedical sciences publications March 1, 2015

Formulation Approaches to Improving the Delivery of an Antiviral Drug with Activity against Seasonal Flu

Shravan K Mutyam, Carol Green, Gita Shankar

The main objective of the present study was to develop formulations of noscapine hydrochloride hydrate with enhanced solubility and bioavailability using co-solvent- and cyclodextrin-based approaches.

Biomedical sciences publications February 1, 2015

Tablet formulation of an active pharmaceutical ingredient with a sticking and filming problem: direct compression and dry granulation evaluations

Shravan K Mutyam, Gita Shankar

Direct compression and dry granulation tableting techniques were evaluated using factorial experimental design.

Biomedical sciences publications December 1, 2014

Formulation Development and Evaluation of Innovative Two-Polymer (SR-2P) Bioadhesive Vaginal Gel

Gita Shankar

The main objective of this investigation was to study the feasibility of developing a vaginal bioadhesive microbicide using a SRI’s proprietary two-polymer gel platform (SR-2P).

Biomedical sciences publications December 1, 2014

Prophylactic treatment with a novel bioadhesive gel formulation containing aciclovir and tenofovir protects from HSV-2 infection

Gita Shankar

Over-the-counter access to an inexpensive, effective topical microbicide could reduce the transmission of HIV and would increase women’s control over their health and eliminate the need to obtain their partners’ consent for prophylaxis.

Biomedical sciences publications October 1, 2014

Development of a Novel Bioadhesive Microbicide Gel Formulation for Prophylactic Protection against Hiv and Hsv-2

Gita Shankar

Over-the-counter access to an inexpensive, effective topical microbicide could reduce the transmission of HIV and would increase women’s control over their health and eliminate the need to obtain their partners’ consent for prophylaxis.

Biomedical sciences publications June 1, 2014 Article

Permeability Enhancing Lipid-Based Co-Solvent and SEDDS Formulations of SQ641, an Antimycobacterial Agent

SRI International, Shravan K Mutyam, Gita Shankar

Abstract Context: Tuberculosis (TB) is a common and often deadly infectious disease caused by strains of Mycobacteria. Development of new anti-tubercular drugs is essential to control the emergence and severity of multidrug-resistant TB. Objective: The objective of this study was to develop an oral preclinical liquid formulation of SQ641 and to determine the permeability across rat intestinal tissue by Ussing chamber. Methods: Thermal and chemical characterization of SQ641 was performed by differential scanning calorimetric analysis, thermogravimetric analysis and high performance liquid chromatography. A high throughput solubility screening technique was utilized to determine the solubility of SQ641 in different solvents and co-solvents. Several co-solvent and self-emulsifying drug delivery system (SEDDS) formulations were selected for Ussing chamber permeability studies. Results and discussion: Calculated average apparent permeability coefficients of SEDDS formulations of SQ641 (ranging from 0.03 × 10-6 to 0.33 × 10-6) were found to be higher than the permeability coefficients of co-solvent formulations (ranging from 0.00 × 10-6 to 0.09 × 10-6) and those of the neat drug SQ641 in buffer (0.00 × 10-6). Conclusion: SEDDS formulations with superior permeability characteristics may provide a useful dosage form for oral intake of anti-tubercular drug SQ641, possibly due to the increase in solubility and immediate dispersion of drug.

Biomedical sciences publications February 1, 2014 Article

Evaluating the Toxicity of Novel Zn-DTPA Tablet Formulation in Dogs and Rats

Gita Shankar, Carol Green

The purpose of this research work is to evaluate toxicity of diethylenetriamine pentaacetic acid zinc trisodium salt (Zn-DTPA) tablets.

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