background: vascular calcification is an important stage in atherosclerosis. during this stage, vascular smooth muscle cells (vsmc) synthesize many osteogenic factors such as osteonectin (encoded by sparc). oxidative stress plays a critical role in atherosclerosis progression, and its accumulation in the vascular wall stimulates the development of atherosclerosis and vascular calcification. the...

background: oxidative modification of low-density lipoprotein (ldl) appears to be an early step in the pathogenesis of atherosclerosis. meanwhile, myeloperoxidase (mpo)-catalyzed reaction is one of the potent pathway for ldl oxidation in vivo. the aim of this study was to evaluate in vitro antioxidant effects of vitamins c and e on ldl oxidation mediated by mpo. methods: mpo was isolated from f...

background: appetite lowering characteristics of dairy have attracted scientists to look for its effect on energy intake particularly among children. in the present study, we tried to assess the effect of low-fat milk on total and short-term energy intake among obese boys in a randomized three-way cross-over clinical trial. methods: a total of 34 obese 10-12-year-old boys were randomized to con...

introduction: we investigated the characteristic of a suitable irradiation on skin's tensional strength using design of experiments (doe). the experiments in this research are designed in two phases and data envelopment analysis (dea) is used for performance measurement of each phase. material and methods: samples were provided from pleura as surface tissue made of collagen and elastin fib...

background: acute low back pain is one of the most prevalent diseases which more than 90% of the adults experience at least once during lifetime. the present study was conducted to determine the efficacy of duration of hot water bag usageon pain relief in in the patients with acute low back pain. methods: this clinical trial study was conducted on 20- to 50-year-old patients referring orthopedi...

background: in addition to individual problems and conditions, low back pain reduces working capacity, resulting in the waste of time and absence from the work, and increases healthcare costs and economic losses. this study aimed to determine the prevalence rate of low back pain and its relationship to demographic factors, body mass index, and education in ergonomic principles in rural men.   m...

for detection of mild to moderate degrees of malnutrition, mid- arm-head circumference ratio of 458 of low income children of isfahan were studied. the percentage bf children with a mid-arm-head circumference ratio of above 0.310, between 0.310 and 0.280, between 0.279 and 0.250, and less than 0.250 were 31.00, 51.75, 15.28 and 1.97 respectively. a significant correlation was found between the ...

a refrigeration cycle is a chain of various pieces of equipment including compressors, condensers, evaporators, and expansion devices each of which takes on a particular thermodynamic process duty in the cycle that eventually results in the production of the required refrigeration. the results of optimized mixed refrigerant cycles (mrcs) in part i show that the configuration of mrc is an effect...

objectives: the purpose of this experimental study was to evaluate the efficacy of low level laser therapy (lllt) for pain reduction after midpalatal expansion in rats.   materials and methods: sixty male sprague six-week old rats weighing 180±10g were divided into seven groups (two experimental groups of 24 rats and one control group of 12 rats). the experimental groups were subjected to expan...

conclusions categorization of trials based on their classification scheme to investigate the efficacy of classification-based physical therapy could reduce the heterogeneity of trials and allow researchers to understand the contradictory results in this context. results a total of 12 rcts were identified and categorized into four classification schemes. some evidence supporting classification-s...