Udai Veer Singh

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Meiotic behaviour of a desynaptic plant of Pennisetum orientale Rich., which seems to have arisen through spontaneous gene mutation/s, is recorded. The plant showed an extremely rare type of desynapsis in which the precocious falling-apart of the homologous chromosomes was accompanied by the blockage of the meiotic course from metaphase I onwards. Different(More)
Methotrexate (MTX) loaded poly (lactic-co-glycolic) acid (PLGA) microspheres were prepared by emulsion solvent evaporation technique. The mean diameter of the microspheres was affected by the type of emulsion stabilizer, polymer concentration, aqueous and organic phase volume and stirring speed. The in vitro release was triphasic and was dependent on(More)
Methotrexate-loaded poly (lactic acid) (PLA) microspheres were prepared from three different molecular weight PLAs using the emulsification-solvent evaporation method. The in vitro drug release could be controlled for up to 2 to 3 weeks. The release of the drug was dependent on the molecular weight of the polymer, the fastest release being from microspheres(More)
With a view to increase efficiency and reduce toxicity of Plumbagin, an attempt was made to formulate plumbagin as a controlled release preparation using various carriers and test for their antitumor and antifertility activities. Niosomes and albumin microspheres were used as carriers. In vitro data showed promising results for these formulations thus they(More)
BACKGROUND AND OBJECTIVES Bidi, cigarette, hookah and chillum are common modes of tobacco smoking in India. Many people consider hookah and chillum smoking less toxic because smoke is filtered through water or wet cloth. We evaluated the toxicity of tobacco smoking by measuring end-tidal carbon monoxide (eCO) levels after various modes of smoking. METHODS(More)
Methotrexate (MTX) loaded chitosan and chitin microspheres were prepared. The physicochemical characteristics were affected by various parameters, e.g. stirring speed, concentration of chitosan and chitin. The t1/2 for in vitro release varied depending on the concentration of chitosan and chitin and the amount of glutaraldehyde used. The antitumour activity(More)
The chemical composition of60Co γ-irradiated potato tubers (Solanum tuberosum cv.Kufri Sindhuri) after germination shows significant changes. The contents of ‘total’ solanine, a glycoalkaloid, citric and ascorbic acids and total solids increase. Malic acid decreases to some extent while pyroglutamic acid does not follow any regular pattern. Except glutamic(More)
A multiplicity of types of neurosecretory cell (NSC), and uniformity in the numbers occurring in medial, lateral, posterior and tritocerebral groups, have been observed inP. ricini. 3 types of cells A, B and C, with their subtypes (A-1, A-2, A-3; B-1, B-2; C-1 and C-2) have been reported. Only B-cells increase in numbers during post-embryonic development.(More)