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排序方式: 共有84条查询结果,搜索用时 15 毫秒
31.
Elango S Govindaraj P Vishwanadha VP Reddy AG Tamang R Muthusami U Kunnoth S Koyilil VK Lakshman M Shanmugasundharam N Singh L Thangaraj K 《Mitochondrion》2011,11(6):878-885
We have sequenced the complete mtDNA of a family with hypertension (HT), type 2 diabetes (T2D) and coronary artery disease (CAD). Our analysis revealed two novel mutations (C3519T, G13204A); of which G13204A replaces valine to isoleucine. In silico analysis of a rare missense mutation (T8597C) showed a deleterious effect. We also observed a 50 bp deletion (m.298_347del50) in the hypervariable region II (HVSII) of all the individuals, who had a common maternal lineage. This (50 bp) deletion was not found in 17,785 individuals from different ethnic populations of India or in a variety of different disease phenotypes. We predict that the mtDNA mutations might be responsible for the HT. Analysis of POLG (polymerase gamma) gene revealed 14 variants which might be responsible for some of the mtDNA mutations seen in this family. 相似文献
32.
Ischemic stroke is a neurovascular disease treatable by thrombolytic therapy, but the therapy has to be initiated within 3 h of the incident. This therapeutic limitation stems from the secondary injury which results mainly from oxidative stress and inflammation. A potent antioxidant/anti-inflammatory agent, caffeic acid phenethyl ester (CAPE) has potential to mitigate stroke's secondary injury, and thereby widening the therapeutic window. We observed that CAPE protected the brain in a dose-dependent manner (1-10 mg/kg body weight) and showed a wide therapeutic window (about 18 h) in a rat model of transient focal cerebral ischemia and reperfusion. The treatment also increased nitric oxide and glutathione levels, decreased lipid peroxidation and nitrotyrosine levels, and enhanced cerebral blood flow. CAPE down-regulated inflammation by blocking nuclear factor kappa B activity. The affected mediators included adhesion molecules (intercellular adhesion molecule-1 and E-selectin), cytokines (tumor necrosis factor-alpha and interleukin-1beta) and inducible nitric oxide synthase. Anti-inflammatory action of CAPE was further documented through reduction of ED1 (marker of activated macrophage/microglia) expression. The treatment inhibited apoptotic cell death by down-regulating caspase 3 and up-regulating anti-apoptotic protein Bcl-xL. Conclusively, CAPE is a promising drug candidate for ischemic stroke treatment due to its inhibition of oxidative stress and inflammation, and its clinically relevant wide therapeutic window. 相似文献
33.
Addis Samantha D. Formel Stephen K. Kim Yeon Ji Varner Paige B. Raudabaugh Daniel B. Lefevre Emilie Bernik Brittany M. Elango Vijaikrishnah Van Bael Sunshine A. Pardue John H. Gunsch Claudia K. 《Biodegradation》2022,33(1):87-98
Biodegradation - The 2010 Deepwater Horizon disaster remains one of the largest oil spills in history. This event caused significant damage to coastal ecosystems, the full extent of which has yet... 相似文献
34.
Comprehensive Computational Analysis of GWAS Loci Identifies CCR2 as a Candidate Gene for Celiac Disease Pathogenesis
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35.
S Sudhakar Y Li M S Katz N Elango 《Biochemical and biophysical research communications》2001,289(2):616-622
36.
Sandhya Chipurupalli Raja Ganesan Giulia Martini Luigi Mele Alessio Reggio Marianna Esposito Elango Kannan Vigneshwaran Namasivayam Paolo Grumati Vincenzo Desiderio Nirmal Robinson 《Cell death & disease》2022,13(4)
In the tumor microenvironment, cancer cells experience hypoxia resulting in the accumulation of misfolded/unfolded proteins largely in the endoplasmic reticulum (ER). Consequently, ER proteotoxicity elicits unfolded protein response (UPR) as an adaptive mechanism to resolve ER stress. In addition to canonical UPR, proteotoxicity also stimulates the selective, autophagy-dependent, removal of discrete ER domains loaded with misfolded proteins to further alleviate ER stress. These mechanisms can favor cancer cell growth, metastasis, and long-term survival. Our investigations reveal that during hypoxia-induced ER stress, the ER-phagy receptor FAM134B targets damaged portions of ER into autophagosomes to restore ER homeostasis in cancer cells. Loss of FAM134B in breast cancer cells results in increased ER stress and reduced cell proliferation. Mechanistically, upon sensing hypoxia-induced proteotoxic stress, the ER chaperone BiP forms a complex with FAM134B and promotes ER-phagy. To prove the translational implication of our mechanistic findings, we identified vitexin as a pharmacological agent that disrupts FAM134B-BiP complex, inhibits ER-phagy, and potently suppresses breast cancer progression in vivo.Subject terms: Cell biology, Cancer 相似文献
37.
38.
Disease surveys conducted in Trinidad between 1985—1987 showed that Cassava Bacterial Blight (CBB) is present in all but one county of the country with disease severity ratings varying from 1—5 depending on day/night temperatures. Field and greenhouse screening identified varieties such as Point Fortin fine leaf and CMC 40 as being resistant whereas M col 22 was moderately resistant to susceptible. Using a combination of antiserum produced to whole cells of Xanthomonas campestris pv. manibotis and a broth enrichment technique, dissemination of the pathogen by flood water was confirmed. The pathogen was detected at distances of up to 300 meters from infected fields. The significance of this mode of pathogen dissemination in initiating primary infection in Trinidad is discussed. 相似文献
39.
N. Elango S. Janaki A.R. Rao 《Biochemical and biophysical research communications》1978,83(4):1388-1395
The purification of Glyoxalase I from rabbit liver using Blue Dextran-Sepharose-4B and S-hexyl Glutathione Sepharose-6B is described. Elution of Glyoxalase I from both the columns was accomplished with S-hexyl glutathione, a competitive inhibitor of the enzyme. The purified enzyme gave two bands on disc electrophoresis. After treatment with glutathione, only one band was found. Except for these interconvertible forms, the purified enzyme was homogeneous as shown by disc electrophoresis and sodium dodecyl sulfate polyacrylamide gel electrophoresis. 相似文献
40.
Laude K Cai H Fink B Hoch N Weber DS McCann L Kojda G Fukai T Schmidt HH Dikalov S Ramasamy S Gamez G Griendling KK Harrison DG 《American journal of physiology. Heart and circulatory physiology》2005,288(1):H7-12
Protein levels and polymorphisms of p22(phox) have been suggested to modulate vascular NAD(P)H oxidase activity and vascular production of reactive oxygen species (ROS). We sought to determine whether increasing p22(phox) expression would alter vascular ROS production and hemodynamics by targeting p22(phox) expression to smooth muscle in transgenic (Tg) mice. Aortas of Tg(p22smc) mice had increased p22(phox) and Nox1 protein levels and produced more superoxide and H(2)O(2). Surprisingly, endothelium-dependent relaxation and blood pressure in Tg(p22smc) mice were normal. Aortas of Tg(p22smc) mice produced twofold more nitric oxide (NO) at baseline and sevenfold more NO in response to calcium ionophore as detected by electron spin resonance. Western blot analysis revealed a twofold increase in endothelial NO synthase (eNOS) protein expression in Tg(p22smc) mice. Both eNOS expression and NO production were normalized by infusion of the glutathione peroxidase mimetic ebselen or by crossing Tg(p22smc) mice with mice overexpressing catalase. We have previously found that NO stimulates extracellular superoxide dismutase (ecSOD) expression in vascular smooth muscle. In keeping with this, aortic segments from Tg(p22smc) mice expressed twofold more ecSOD, and chronic treatment with the NOS inhibitor N(G)-nitro-L-arginine methyl ester normalized this, suggesting that NO regulates ecSOD protein expression in vivo. These data indicate that chronic oxidative stress caused by excessive H(2)O(2) production evokes a compensatory response involving increased eNOS expression and NO production. NO in turn increases ecSOD protein expression and counterbalances increased ROS production leading to the maintenance of normal vascular function and hemodynamics. 相似文献