01965nas a2200169   4500008004100000245012400041210007000165260000800235300001600243490000600259520129900265100002301564700001901587700002401606700003001630856013501660       2016                        eng d00aPalladium supported on fluorite structured redox CeZrO4-δ for heterogeneous suzuki coupling in water: a green protocol0 aPalladium supported on fluorite structured redox CeZrO4δ for het  cJUL  a2673–26810 v13 a<p>Pd on redox CeZrO4-δ catalysts was prepared, characterized and their activity was evaluated for Suzuki coupling reaction in water under reflux condition. Fresh and reduced form of 5 % Pd (R−Pd5) on CeZrO4-δ catalyst exhibited 100 % conversion in 2.5 and 1 h, respectively. R−Pd5 shows significant activity for wide range of substrate compatibility and for less reactive aryl bromides too. The mechanistic investigations proved the important role of redox CeZrO4-δ support on the catalytic activity. It was observed that the presence of oxygen vacancy along with Ce3+ enhances the activity. 1 wt % Pd photodeposited on pre-reduced CeZrO4-δ support requires a mere 20 min. for 100 % conversion of Suzuki coupling. Effect of metal dispersion and particle size on catalytic activity is also discussed. High Pd dispersion with small particle size (4±1 nm), particle size preservation after reaction, strong metal-support interaction and no leaching fully suggest the heterogeneous mechanism is operative for Suzuki coupling on 1 wt % Pd photodeposited on reduced CeZrO4-δ support. Present work hints the possibility of achieving high conversion for Suzuki reaction with very small amount of Pd through better dispersion by taking advantage of redox support and in water.</p>1 aBurange, Anand, S.1 aShukla, Rakesh1 aTyagi, Avesh, Kumar1 aGopinath, Chinnakonda, S.  uhttps://library.ncl.res.in/content/palladium-supported-fluorite-structured-redox-cezro4-%CE%B4-heterogeneous-suzuki-coupling-water02781nas a2200313   4500008004100000022001400041245018000055210006900235260000900304300001100313490000900324520172200333653002402055653001902079653000902098653001102107653002102118653001802139100002102157700002102178700001602199700002702215700002402242700001002266700002502276700001902301700001902320856012802339       2021                        eng d  a0006-899300aProtriptyline improves spatial memory and reduces oxidative damage by regulating NF kappa B-BDNF/CREB signaling axis in streptozotocin-induced rat model of Alzheimer's disease0 aProtriptyline improves spatial memory and reduces oxidative dama  cMAR   a1472610 v17543 a<p>Antidepressants are well known to exert their role via upregulation of brain derived neurotrophic factor (BDNF). BDNF has been reported to exerts its neuroprotective effect in rodent and primate models as well as in patients of Alzheimer's disease (AD). The aim of our study was to evaluate the effect of protriptyline (PRT), a tricyclic antidepressant, in streptozotocin (STZ)- induced rat model of AD. Total 10 mu l of STZ was injected into each ventricle (1 mg/kg). PRT (10 mg/kg, i.p.) treatment was started 3-day post STZ administration and continued till 21 days. We found that STZ treatment significantly increased pTau, A beta 42 and BACE-1 expression, oxidative stress and neurodegeneration in hippocampus and cortex of adult rats. STZ induced impairment in spatial learning and retention memory was associated with increased WO and reduced CREB and BDNF expression in cortex and hippocampus. Interestingly, PRT treatment significantly reduced pTau, A beta 42 and BACE-1 levels, neurodegeneration, oxidative stress and glial activation, contributing to the improved spatial learning and retention memory in STZ treated rats. Moreover, PRT treatment significantly improved p-ERK/ERK ratio and enhanced BDNF and CREB levels by reducing NFXB and GFAP expression in STZ treated rats. Our data suggest that impaired NFXB and CREB signaling potentially contribute in AD pathogenesis by elevating oxidative stress and neuroinflammation mediated neurodegeneration. Our study has established protriptyline as a multi target molecule in pre-clinical model of AD and further investigations on PRT like molecules could pave way for further development of effective new treatments in neurodegenerative disorders.</p>
10aAlzheimer's disease10aantidepressant10aBDNF10aMemory10aOxidative stress10aProtriptyline1 aTiwari, Virendra1 aMishra, Akanksha1 aSingh, Sonu1 aMishra, Sandeep, Kumar1 aSahu, Kiran, Kumari1 aParul1 aKulkarni, Mahesh, J.1 aShukla, Rakesh1 aShukla, Shubha  uhttps://library.ncl.res.in/content/protriptyline-improves-spatial-memory-and-reduces-oxidative-damage-regulating-nf-kappa-b