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61.
A new series of 2,9,10-trisubstituted-6-oxo-7,12-dihydro-chromeno[3,4-b]quinoxalines was synthesized and submitted to antibacterial and antifungal activities. Result of the antimicrobial screening showed the compound 4j being the most effective among the various treatments in antimicrobial screening. Compounds 4c, 4d, 4k, and 4l showed moderate activity against the microorganisms tested. 相似文献
62.
Anuradha Kumari Olga M. Mazina Ujwal Shinde Alexander V. Mazin Hua Lu 《Journal of cellular biochemistry》2009,108(2):508-518
A possible role for structure‐specific recognition protein 1 (SSRP1) in replication‐associated repair processes has previously been suggested based on its interaction with several DNA repair factors and the replication defects observed in SSRP1 mutants. In this study, we investigated the potential role of SSRP1 in association with DNA repair mediated by homologous recombination (HR), one of the pathways involved in repairing replication‐associated DNA damage, in mammalian cells. Surprisingly, over‐expression of SSRP1 reduced the number of hprt+ recombinants generated via HR both spontaneously and upon hydroxyurea (HU) treatment, whereas knockdown of SSRP1 resulted in an increase of HR events in response to DNA double‐strand break formation. In correlation, we found that the depletion of SSRP1 in HU‐treated human cells elevated the number of Rad51 and H2AX foci, while over‐expression of the wild‐type SSRP1 markedly reduced HU‐induced Rad51 foci formation. We also found that SSRP1 physically interacts with a key HR repair protein, Rad54 both in vitro and in vivo. Further, branch migration studies demonstrated that SSRP1 inhibits Rad54‐promoted branch migration of Holliday junctions in vitro. Taken together, our data suggest a functional role for SSRP1 in spontaneous and replication‐associated DNA damage response by suppressing avoidable HR repair events. J. Cell. Biochem. 108: 508–518, 2009. © 2009 Wiley‐Liss, Inc. 相似文献
63.
Amit N. Shinde Nutan Malpathak Devanand P. Fulzele 《Biotechnology and Bioprocess Engineering》2009,14(5):612-618
The effect of biotic elicitors (yeast extract, chitosan), signaling molecule (salicylic acid), and polyamines (putrescine
and spermidine) was studied with respect to isoflavones accumulation in cell suspension cultures of corylifolia L. Untreated cell suspension (control) accumulated 1.66% dry wt of daidzein and 0.165% dry wt of genistein. In precursor
feeding experiment, phenylalanine at 0.5 mM concentration led to 1.3 fold higher production of daidzein (1.99% dry wt) and
genistein (0.22% dry wt). In biotic elicitors, yeast extract (100 mg/L) was found to be the most efficient elicitor to induce
higher production levels of daidzein (2.21% dry wt) and genistein (0.293% dry wt) in suspension cultures. Salicylic acid (signaling
molecule) at 1 mM concentration stimulated the maximum accumulation of daidzein (3.4% dry wt) and genistein (0.41% dry wt)
2 days after elicitation. In case of polyamines, spermidine (100 mM) resulted in highest accumulation of daidzein (3.2% dry
wt) and genistein (0.475% dry wt) after 7 days of addition, which was 2.4 fold of that in control. This is the first report
on kinetics of isoflavone production in response to elicitation in cell suspension of P. corylifolia. 相似文献
64.
Amit N. Shinde Nutan Malpathak Devanand P. Fulzele 《Biotechnology and Bioprocess Engineering》2009,14(3):288-294
The effect of biotic elicitors (yeast extract, chitosan), signaling molecule (salicylic acid), and polyamines (putrescine
and spermidine) was studied with respect to isoflavones accumulation in hairy root cultures of Psoralea corylifolia L. Untreated hairy roots (control) accumulated 1.55% dry wt of daidzein and 0.19% dry wt of genistein. In precursor feeding
experiment, phenylalanine at 2 mM concentration led to 1.3 fold higher production of daidzein (1.91% dry wt) and genistein
(0.27% dry wt). In biotic elicitors, chitosan (2 mg/L) was found to be the most efficient elicitor to induce daidzein (2.78%
dry wt) and genistein (0.279% dry wt) levels in hairy roots. Salicylic acid at 1 mM concentration stimulated the maximum accumulation
of daidzein (2.2% dry wt) and genistein (0.228% dry wt) 2 days after elicitation. In case of polyamines, putrescine (50 mM)
resulted in highest accumulation of daidzein (3.01% dry wt) and genistein (0.227% dry wt) after 5 days of addition. Present
results indicated the effectiveness of elicitation and precursor feeding on isoflavones accumulation in hairy roots of P. corylifolia. This is the first report of elicitation on isoflavones production by hairy roots of P. corylifolia. 相似文献
65.
Santosh N. Mokale Sandeep S. Shinde Rupali D. Elgire Jaiprakash N. Sangshetti Devanand B. Shinde 《Bioorganic & medicinal chemistry letters》2010,20(15):4424-4426
A series of 3-(4,6-disubtituted-2-thioxo-1,2,3,4-tetrahydropyrimidin-5-yl) propanoic acid derivatives has been synthesized by condensation of thiourea, 5-(4-subtituted phenyl)-5-oxopentanoic acid and substituted aldehyde. The synthesized compounds were screened for their anti-inflammatory activity using rat paw edema method. Most of the compounds from the series showed significant (p <0.05) anti-inflammatory activity. 相似文献
66.
Ramakrishna V.S. Nirogi Anand V. Daulatabad G. Parandhama Shaikh Mohammad K.R. Sastri Anil K. Shinde P.K. Dubey 《Bioorganic & medicinal chemistry letters》2010,20(15):4440-4443
A series of novel aryl aminosulfonamides was designed and synthesized as 5-HT6 receptor ligands. Many compounds screened in a functional reporter gene based assay displayed potent antagonistic activity with Kb values in the range of 0.02–10 nM. The lead compound 11m exemplified in this series showed good ADME surrogate properties, acceptable pharmacokinetic profile and is active in animal models of cognition like novel object recognition test and Morris water maze. The compound was selected for detailed profiling. 相似文献
67.
During microsatellite polymerase chain reaction (PCR), insertion–deletion mutations produce stutter products differing from the original template by multiples of the repeat unit length. We analyzed the PCR slippage products of (CA)n and (A)n tracts cloned in a pUC18 vector. Repeat numbers varied from two to 14 (CA)n and four to 12 (A)n. Data was generated on approximately 10 single molecules for each clone type using two rounds of nested PCR. The size and peak areas of the products were obtained by capillary electrophoresis. A quasi- likelihood approach to the analysis of the data estimated the mutation rate/repeat/PCR cycle. The rate for (CA)n tracts was 3.6 × 10–3 with contractions 14 times greater than expansions. For (A)n tracts the rate was 1.5 × 10–2 and contractions outnumbered expansions by 5-fold. The threshold for detecting ‘stutter’ products was computed to be four repeats for (CA)n and eight repeats for (A)n or ~8 bp in both cases. A comparison was made between the computationally and experimentally derived threshold values. The threshold and expansion to contraction ratios are explained on the basis of the active site structure of Taq DNA polymerase and models of the energetics of slippage events, respectively. 相似文献
68.
Pankaj Kumar Yedukondalu Nalli Asmita Dhimmar Sanju Singh Vishal A. Ghadge Harshal Sahastrabudhe Apexa Gajjar Pramod B. Shinde 《化学与生物多样性》2023,20(6):e202300106
The present study explores the endophyte associated with the halophyte Salicornia brachiata for uncovering new biologically important compounds. Thus, HPLC-PDA guided chemical investigation of the ethyl acetate extract of the Bacillus subtilis NPROOT3 led to the isolation of a new compound named bacillinaphthin A ( 1 ) along with previously known rubinaphthin A ( 2 ). The structure of 2 was determined by a comparison of HR-ESI-MS, 1H and 13C nuclear magnetic resonances (NMR) with those of reported data, whereas the structure of new compound 1 was elucidated by interpretation of 1D- and 2D-NMR and MS data. Bacillinaphthin ( 1 ) and rubinaphthin ( 2 ) feature 1,4-dihydroxy-2-naphthoic acid derivatives which have been isolated herein for the first time from the genus Bacillus. Bacillinaphthin ( 1 ) is a new congener of 2 with an additional succinic acid side chain attached to the sugar moiety. Production of succinoglycan compounds was reported to regulate symbiosis, hence the isolation of 1 exhibits an example of chemical ecology between the halophyte and its endophyte. In silico tools were used to assess the bioactive potential of both isolated molecules. 相似文献
69.
AV. H. HEWOOD EDITAE 《Botanical journal of the Linnean Society. Linnean Society of London》1979,78(3):235-236
Following the publication of the last of the series of Flora Europaea Notulae, No. 20 in the Botanical Journal of the Linnean Society , 76: 297–384 (1978), a number of additions or alterations have been drawn to our attention. These are published in continuation. 相似文献
70.