Nanoparticle use has increased radically raising concern about possible adverse effects in humans. Zinc oxide nanoparticles (ZnO NPs) are among the most common nanomaterials in consumer and medical products. Several studies indicate problems with their safe use. The aim of our study was to see at which levels ZnO NPs start to produce adverse cytogenetic effects in human lymphocytes as an early ...

producing parts with high density and improved mechanical properties is one of the most important aims of powder metallurgy process. there are many factors for attaining modified properties in sintered parts but among them controlling type and quantity of alloying elements and manufacturing parameters such as compacting pressure, sintering temperature are the most effective.in this research, tw...

background and aim: menopause refers to the cessation of menstruation due to hormonal changes and ovarian inactivity in women. these changes in hormone levels lead to various health consequences. this period of physiological changes usually starts in women with 40-50 years of age, and is characterized by the reduction of estrogen level. the mortality rate of premenopausal women, due to cardiova...

background: the main purpose of this study was to determine the relationship between serum vitamin d and the status of bone mineral density in patients with low-energy hip and distal radius fracture. methods: this retrospective case-control study was performed between january 2013 and january 2014. participants aged 55 years or older were divided to case group including 85 patients with low-ene...

oxidation of low density lipoprotein (ldl) has been strongly implicated in the phathogenesis of atherosclerosis. the use of oxidants in dietary food stuff may lead to the production of oxidized ldl and may increase both the development and the progression of atherosclerosis. the present work investigated the effects of some elements including: copper (cu), iron (fe), vanadium (v) and titanium (...

familial hypercholesterolemia (fh) is an autosomal co-dominant disorder of lipid metabolism, caused by mutations in ldl receptor gene. the penetrance of fh is almost 100%, meaning that half of the offspring of affected parents born with disease. the patients are at risk of premature coronary heart disease (chd). there is no report about the molecular basis of fh in iran. identification of mutat...

objective(s) oxidized low-density lipoproteins (ox-ldls) appear to play a significant role in atherogenesis. in fact, circulating ox-ldl concentrations have been recognized as a risk factor for cardiovascular disease (cvd). the main objectives of this study were to assess the effects of antioxidant vitamins on ox-ldl as a biomarker of cvd in male subjects with cvd risk factors. materials and me...

Acrylamide was grafted in low density polyethylene during melt processing in the presence of a free radical initiator using a torque rheometer in a closed system. Effects of processing time, acrylamide and benzoyl peroxide concentrations were studied. FTIR studies revealed that the degree of grafting increased by an increase in acrylamide concentration. Maximum grafting was obtained at 7 mi...

BACKGROUND There is limited evidence for an association between agricultural pesticide exposure and certain types of childhood cancers. Numerous studies have evaluated exposure to pesticides and childhood cancer and found positive associations. However, few studies have examined the density of agricultural land use as a surrogate for residential exposure to agricultural pesticides and results a...