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51.
Kumar P. S. Ling C. Y. Zhou Z. B. Dong Y. L. Sun C. L. Song Y. X. Wong N. K. Ju J. H. 《Microbiology》2020,89(4):483-492
Microbiology - Marine actinobacteria particularly from marine environments are believed to be inexhaustible sources of biologically active molecules for biomedical and industrial applications. We... 相似文献
52.
Yun Li Nana Wang Dong Lin Xiaohui Liu Yong Yang 《Journal of biomolecular structure & dynamics》2020,38(17):4977-4996
AbstractTwo new nickel (II) triphenylphosphine complexes derived from tridentate aroylhydrazone ligands [H2L1 = 2-hydroxy-3-methoxybenzylidene)benzohydrazone and H2L2 = N′-(2-hydroxy-3-methoxybenzylidene)-2-hydroxybenzoylhydrazone] and triphenylphosphine were prepared and their molecular structures were determined by single crystal X-ray diffraction analysis. Both nickel(II) complexes showed slightly distorted square planar geometry with one tridentate aroylhydrazone ligand coordinated through ONO donor atoms and one triphenylphosphine ligand coordinated to the nickel center through the phosphorus atom. DNA interaction studies indicated that both complexes possessed higher affinity to herring sperm DNA (HS-DNA) than the corresponding free aroylhydrazone ligand. Molecular docking investigations showed that both complexes could bind to DNA through intercalation of the phenyl rings between adjacent base pairs in the double helix. Meanwhile, bovine serum albumin (BSA) binding studies revealed the complexes could effectively interact with BSA and change the secondary structure of BSA. Further pharmacological evaluations of the synthesized complexes by in vitro antioxidant assays demonstrated high antioxidant activity against NO· and O2˙? radicals. The anticancer activity of each complex was assessed through in vitro cytotoxicity assays (CCK-8 kit) toward A549 and MCF-7 cancer cell and normal L-02 cell lines. Significantly, the Ni(II) complex derived from H2L1 ligand was found to be more effective cytotoxic toward MCF-7cancerous cell with the IC50 value equaled 9.7?μM, which showed potent cytotoxic activity over standard drug cisplatin. Abbreviations A549 human lung carcinoma cell BSA bovine serum albumin CCK-8 Cell Counting Kit-8 DFT density functional theory DNA deoxyribonucleic acid DPPH˙ 2,2-diphenyl-1-picrylhydrazyl H2L1 2-hydroxy-3-methoxybenzylidene)benzohydrazone N′-(2-hydroxy-3-methoxybenzylidene)-2-hydroxybenzoylhydrazone H2L2 N′-(2-hydroxy-3-methoxybenzylidene)-2-hydroxybenzoylhydrazone HOMO highest occupied molecular orbital IC50 the 50% activity L-02 human normal liver cell LOMO lowest unoccupied molecular orbital (LUMO) MCF-7 human breast carcinoma cell NO˙ nitric oxide O2˙? superoxide anion SOD superoxide dismutase Communicated by Ramaswamy H. Sarma 相似文献
53.
Yao Hanhan Liu Chenshan Lin Dehai Liu Sheng Lin Zhihua Dong Yinghui 《Molecular biology reports》2020,47(2):1257-1264
Molecular Biology Reports - Leucine aminopeptidase 3 (LAP3) is an important proteolytic enzyme that catalyzes the hydrolysis of leucine residues from the amino termini of protein or peptide... 相似文献
54.
Zhang Huan Sun Gaigai Lin Zhihua Yao Hanhan Dong Yinghui 《Molecular biology reports》2020,47(12):9579-9593
Molecular Biology Reports - High ammonia can inhibit the survival and growth, and even cause mortality of razor clam (S. constricta). The accumulation of ammonia to lethal concentrations in some... 相似文献
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56.
Wu Song Chun-Fu Wu Ping Liu Rong-Wu Xiang Fang Wang Ying-Xu Dong Jing-Yu Yang 《Neurochemical research》2013,38(1):153-161
Uridine, a pyrimidine nucleoside, has been proposed to be a potential signaling molecule in the central nervous system. The understanding of uridine release in the brain is therefore of fundamental importance. The present study was performed to determine the characteristics of basal and morphine-induced uridine release in the striatum of freely moving mice by using the microdialysis technique. To ascertain whether extracellular uridine was derived from neuronal release, the following criteria were applied: sensitivity to (a) K+ depolarization, (b) Na+ channel blockade and (c) removal of extracellular Ca2+. Uridine levels were not greatly affected by infusion of tetrodotoxin (TTX) and were unaffected by either Ca2+-free medium or in the presence of EGTA (a calcium chelator), suggesting that basal extracellular uridine levels were maintained mainly by non-vesicular release mechanisms. In addition, both systemic and local application of morphine increased striatal uridine release. The morphine-induced release was reversed by naloxone pretreatment, but was unaffected by TTX or EGTA infusion. Moreover, co-administration of morphine and nitrobenzylthioinosine (NBTI, an inhibitor of nucleotide transporter) produced increases of uridine levels similar to that produced by NBTI or morphine alone, suggesting a nucleotide transporter mechanism involved. Taken together, these findings suggest that morphine produces a μ-opioid receptor-mediated uridine release via nucleoside transporters in a TTX- and calcium-independent manner. 相似文献
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58.
A variety of epidemiologic studies have focused on the association between macrophage migration inhibitory factor (MIF) gene − 173G/C polymorphism and inflammatory bowel disease (IBD). However, results in different studies have been inconsistent. In order to derive a more precise estimation of the associations, we performed this meta-analysis and systematic searches of electronic databases PubMed and Web of Science (up to April 30, 2013). Based on our search criteria, a total of seven eligible studies concerning the MIF − 173G/C polymorphism and IBD risk were included in the final meta-analysis, comprising 2162 IBD cases and 2134 controls. Significant association was found between MIF − 173G/C polymorphism and the risk of IBD when all studies were pooled into the meta-analysis (for C allele vs. G allele: OR = 1.25, 95% CI = 1.12–1.41, p = 0.000; for C/C vs. G/G: OR = 1.71, 95% CI = 1.23–2.39, p = 0.002; for C/C + G/C vs. G/G: OR = 1.24, 95% CI = 1.09–1.42, p = 0.002; for C/C vs. G/C + G/G: OR = 1.67, 95% CI = 1.20–2.33, p = 0.002). Heterogeneity and publication bias did not exist in the overall comparisons. The present meta-analysis suggests an association between the MIF − 173G/C polymorphism and IBD risk. However, due to few studies and the selection bias existed in some studies, the results should be interpreted with caution. 相似文献
59.
60.
Zhongsheng Tong Sharon C.-A. Chen Liuqing Chen Bilin Dong Ruoyu Li Zhimin Hu Ping Jiang Dongsheng Li Yiqun Duan 《Mycopathologia》2013,175(3-4):301-306
We report a case of subcutaneous phaeohyphomycosis due to Phialophora verrucosa in a 64-year-old Chinese farmer suffering from CD4+ lymphopenia. He presented with diffuse and infiltrated plaques involving the entire face including the eyes, neck, occiput, and extending to the dorsal regions of his torso. The patient is notable for the discrete multifocal nature of the illness in the absence of disseminated infection and rarity of P. verrucosa as a cause of subcutaneous phaeohyphomycosis. 相似文献