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排序方式: 共有75条查询结果,搜索用时 15 毫秒
1.
Urinary oxalate is a biomarker for calcium oxalate kidney stone disease; however, its assay is insensitive and nonspecific. Calcium oxalate monohydrate (COM) binding protein (45 kDa) is a promoter of calcium oxalate kidney disease, which is markedly upregulated by oxalate induced oxidative stress. The current study was carried out to evaluate whether COM binding protein can serve as a diagnostic marker for calcium oxalate kidney stone formers. COM binding protein was isolated, purified and antibody was raised against it in rabbits. Urine samples (24 h) were collected from patients suffering from various kidney diseases such as acute nephritis, chronic nephritis, nephrotic syndrome, calcium oxalate (CaOx) stone formers, uric acid stone formers, struvite stone formers and calcium phosphate stone formers. This COM binding protein was quantified by an in house ELISA method and the excretion was found to lie between 2 and 3 mg in control samples, while in CaOx stone formers it was detected between 11 and 19 mg. Urinary risk factors were assayed. We conclude that COM binding protein can serve as a diagnostic marker for CaOx stone formers. 相似文献
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Tirupathi Pichiah PB Suriyakalaa U Kamalakkannan S Kokilavani P Kalaiselvi S SankarGanesh D Gowri J Archunan G Cha YS Achiraman S 《Medical hypotheses》2011,77(4):677-679
The risk for diabetes increases with increasing BMI < 25. Insulin resistance is the key factor for type 2 diabetes; studies revealed that endoplasmic reticulum stress is the main factor behind this disease. With increase in ER stress, pancreatic beta cells start to undergo apoptosis, leading to a decline in the pancreatic beta cell population. The ER stress arises due to unfolded protein response. Recently, spermidine get importance for increasing the longevity in most of the eukaryotes including yeast, Caenorhabditis elegans, Drosophila and human peripheral blood mononuclear cells via induction of autophagy pathway. Autophagy is also involved in regulation of scavenging of proteins. One of the major cellular pathways for scavenging the aggregated intracellular protein is autophagy. Hence spermidine can be a candidate for the treatment type 2 diabetes. Autophagy genes are regulated by mTOR (mammalian Target Of Rapamycin) dependent or independent pathway via AMPK. Hence either inhibition of mTOR or activation of AMPK by spermidine will play two crucial roles, first being the activation of autophagy and secondly the reduction of endoplasmic reticulum stress which will reduce beta cell death by apoptosis and thus can be a novel therapeutic candidate in the treatment of insulin resistance in type 2 diabetes and preserving pancreatic beta cell mass. 相似文献
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Vadivel Senthil Kumaran Karpagavinayagam Arulmathi Periandavan Kalaiselvi 《Nutrition (Burbank, Los Angeles County, Calif.)》2009,25(7-8):847-854
ObjectiveThe activities and capacities of antioxidant systems of tissue cells are declined during aging, leading to the gradual loss of pro-oxidant/antioxidant balance and accumulation of oxidative damage. Hence, the present study evaluated the role of green tea extract (GTE), rich in polyphenols, in combating age-associated macromolecular damage in rat cardiac tissue.MethodsThe antioxidant defense system, lipid peroxidation, protein oxidation, and redox status in heart tissue were studied using young and aged rats.ResultsSignificant increases in lipid peroxidation, protein carbonyls, and marked decreases in glutathione redox status, protein thiols, and activities of enzymatic and non-enzymatic antioxidants were observed in aged rats compared with young rats. Supplementation of GTE (100 mg/kg of body weight per day) orally for 30 days ameliorated these changes significantly.ConclusionThis study accredits GTE's antioxidant rejuvenating potency and its role in the amelioration of senescence-mediated redox imbalance in aged rat cardiac tissue. 相似文献
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K. Mathangi Ramakrishnan D. Kamalakar Rao C. R. Doss T. Mathivanan G. Manokaran K. Ramachandran V. Jayaraman R. Venkatachalapathy S. P. Thyagarajan 《Burns : journal of the International Society for Burn Injuries》1985,11(6):404-407
Infection is the most important problem in the treatment of burns in a developing country. A burn compromises a major body protective mechanism, namely the skin. Hence, the susceptibility to local infection increases at these sites. The incidence of burn wound sepsis is very high in south India as the socio-economic conditions and the standard of personal hygiene are poor and the hot moist climatic conditions encourage bacterial growth. These three factors are rarely present in the temperate zone countries of Europe and North America. This study was undertaken to identify more clearly the factors that are responsible for the higher incidence of burn wound infection and to formulate methods of treatment which are appropriate for our patient population living in a tropical country. 相似文献
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Pichiah PB Sankarganesh A Kalaiselvi S Indirani K Kamalakkannan S SankarGanesh D Hwang PH Cha YS Achiraman S 《Medical hypotheses》2012,78(2):218-220
Adriamycin is an anthracycline antibiotic used as anticancer drug since past few decades. Though effective against cancer, it is cardiotoxic, nephrotoxic, hepatotoxic and also toxic for reproductive system. Although a number of potential toxic mechanisms have been identified following exposure to adriamycin, the major pathogenic mechanism appears to be the generation of toxic reactive oxygen species (ROS). Animals treated with adriamycin have shown a decrease in total sperm count. This implies that adriamycin impairs the process of spermatogenesis. Epididymal white adipose tissue (EWAT) is necessary for normal spermatogenesis, and decrease in the EWAT causes disturbance in spermatogenesis. Factor X is an unknown molecule synthesized by EWAT that plays crucial role in spermatogenesis. Adriamycin inhibits Kruppel-like factor 4 (KLF-4) and thus downregulates the adipogenesis process needed to maintain the EWAT mass. Apart form adipocytes, KLF-4 and peroxisome proliferator-activated receptor gamma (PPAR-γ) are also found in spermatogonium and testis, implying its vital role in spermatogenesis. Adriamycin treatment inhibits KLF-4 and thus PPAR-γ in EWAT and spermatogonium. Reduction of EWAT might cause a decrease in Factor X level. Declining of Factor X level, KLF-4 and PPAR-γ together will lead to disturbance in spermatogenesis process. 相似文献
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Nagappan A Karunanithi N Sentrayaperumal S Park KI Park HS Lee do H Kang SR Kim JA Senthil K Natesan S Muthurajan R Kim GS 《The American journal of Chinese medicine》2012,40(1):203-218
Ginsenosides and withanolides are the secondary metabolites from Panax ginseng and Withania somnifera, respectively. These compounds have similar biological properties. Two-dimensional electrophoresis (2-DE) analysis was utilized to reveal the protein profile in the roots of both plants, with the aim of clarifying similarly- and differentially-expressed proteins. Total proteins of Korea ginseng (P. ginseng) and Indian ginseng (W. somnifera) roots were separated by 2-DE using a pH 4-7 immobilized pH gradient strip in the first dimension and 12% sodium dodecyl sulfate polyacrylamide gel electrophoresis in the second dimension. The protein spots were visualized by silver staining. Twenty-one P. ginseng proteins and 35 W. somnifera proteins were chosen for identification by matrix-assisted laser desorption/ionization time-of-flight tandem mass spectrometry; of these, functions were ascribed to 14 and 22 of the P. ginseng and W. somnifera proteins, respectively. Functions mainly included general cell metabolism, defense and secondary metabolism. ATPase and alcohol dehydrogenase proteins were expressed in both plants. The results of this study, to our knowledge, are the first to provide a reference 2-DE map for the W. somnifera root proteome, and will aid in the understanding of the expression and functions of proteins in the roots of Korean ginseng and Indian ginseng. 相似文献