P
Poornima Sharma
Researcher at Banaras Hindu University
Publications - 17
Citations - 199
Poornima Sharma is an academic researcher from Banaras Hindu University. The author has contributed to research in topics: Raman spectroscopy & Reaction intermediate. The author has an hindex of 9, co-authored 17 publications receiving 157 citations. Previous affiliations of Poornima Sharma include University of Lucknow.
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Journal ArticleDOI
Detection of in Vitro Metabolite Formation of Leflunomide: A Fluorescence Dynamics and Electronic Structure Study.
TL;DR: The metabolic transformation of antirheumatic fluorescent drug leflunomid into its active metabolite teriflunomide through isoxazole ring opening has been monitored in vitro using steady state and time domain fluorescence spectroscopy and density functional theory to reveal slow conversion of lefl UNO to E and Z forms in aqueous medium, which becomes faster at basic pH.
Journal ArticleDOI
A novel Raman spectroscopic approach to identify polymorphism in leflunomide: a combined experimental and theoretical study
Poornima Sharma,Debraj Gangopadhyay,Sima Umrao,Shiv Kumar,Ajoy Kanti Ghosh,P. C. Mishra,P. C. Mishra,Ranjan K. Singh +7 more
TL;DR: In this article, the presence and conversion of α to β polymorphic forms of an anti-rheumatic drug leflunomide have been studied by temperature-dependent and in situ Raman observations.
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Temperature dependent polymorphism of pyrazinamide: An in situ Raman and DFT study
Poornima Sharma,Rajib Nandi,Debraj Gangopadhyay,Debraj Gangopadhyay,Anurag Singh,Ranjan K. Singh +5 more
TL;DR: The α and γ polymorphs of drug pyrazinamide have been detected with the help of temperature dependent Raman spectroscopic technique and polymorphic phase change from α→γ form of pyrazine between 145 and 146°C is suggested.
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Modulation of hepatocarcinogenesis in N -methyl- N -nitrosourea treated Balb/c mice by mushroom extracts
Srishti Ramsaha,Vidushi S. Neergheen-Bhujun,Shalini Verma,Ashok Kumar,Rahul Kumar Bharty,Amit Kumar Chaudhary,Poornima Sharma,Ranjan K. Singh,Priya Huzar Futty Beejan,Kang Kyung-Sun,Theeshan Bahorun +10 more
TL;DR: The findings demonstrate hepatoprotective, immunomodulatory and anti-carcinogenic effects and suggest the use of mushrooms as potential dietary prophylactics in cancer chemoprevention.
Journal Article
Monitoring the in Vitro Thiazolidine Ring Formation of Antioxidant Drug N-Acetyl-l-cysteine at Basic pH and Detection of Reaction Intermediates: A Raman Spectroscopic and Ab Initio Study
Debraj Gangopadhyay,Moumita Das,Keshav Kumar Singh,Poornima Sharma,Ranjan K. Singh,Poonam Tandon +5 more
TL;DR: Correlation of the theoretically calculated results with experimental Raman spectral analysis has led to a detailed and proper understanding of this important biochemical reaction.