Poonam Tewary

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Alarmins are endogenous mediators capable of promoting the recruitment and activation of antigen-presenting cells (APCs), including dendritic cells (DCs), that can potentially alert host defense against danger signals. However, the relevance of alarmins to the induction of adaptive immune responses remains to be demonstrated. In this study, we report the(More)
Withanolide E, a steroidal lactone from Physalis peruviana, was found to be highly active for sensitizing renal carcinoma cells and a number of other human cancer cells to tumor necrosis factor-related apoptosis-inducing ligand (TRAIL)-mediated apoptosis. Withanolide E, the most potent and least toxic of five TRAIL-sensitizing withanolides identified,(More)
To explore the need for minimum threshold photoperiodicity in regulation of metabolic and reproductive activities of a migratory finch, various programmed light-dark (LD) schedules, such as P1 (3L/21D), P2 (6L/18D), P3 (9L/15D), P4 (12L/12D), P5 (15L/9D), P6 (18L/6D), P7 (21L/3D), and P8 (24L/0D), have been used on photosensitive female blackheaded buntings(More)
Endogenous circadian rhythms are involved in various photoperiodic responses of birds. Investigations involving the mechanisms of photoperiodic time measurement in birds have been confined mainly to temperate zone species using males exclusively. Due to the paucity of experimental evidence on subtropical birds that have very wide distribution, the present(More)
Groups of photosensitive female house sparrows have been kept under night-interruption and intermittent light cycles for a period of 6 weeks. The night-interruption cycle consisted of a basic photophase of 6 h and 1 h photointerruption of the dark phase in the 24 h cycle at different points. Ovarian growth was stimulated under cycles in which(More)
Groups of adult female house sparrows (Passer domesticus) were placed under short days (8L/16D) and continuous darkness (DD) after photostimulation by long days (15L/16D) for either 25 or 40 days and another two groups of photostimulated birds were continued on long day (15L/9D) photoperiod. Two groups of photosensitive birds were subjected to 8L/16D or DD(More)
Groups of adult photosensitive male yellow-throated sparrows were subjected to different intermittent light cycles viz. 2L/2D, 3L/3D, 4L/4D, 8L/8D and 12L/12D besides two control groups held on 8L/16D and 18L/6D photoperiodic treatments. Testicular growth occurred in 2L/2D, 3L/3D, 4L/4D and 18L/6D but not in 8L/16D, 12L/12D and 8L/16D photoperiodic regimes.(More)
Male redheaded buntings (Emberiza bruniceps) were subjected to continuous darkness (DD) or short days (8L/16D) after photo-stimulation (15L/9D) for either 15 or 30 days. Two groups of birds (four each), after photo stimulation for 30 days, were continued on a regimen of 15L/9D. Another two groups (of four each) of photo-sensitive birds were also subjected(More)
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