Objectives:The expression levels of heat shock proteins (HSPs) are elevated in many cancers, and this overexpression is often associated with both a poor survival and a therapeutic outcome. Curcumin is an anti-cancer agent that also induces a heat shock response. HSPs confer resistance to curcumin-induced apoptosis in cancerous cells. The aim of the current study was to analyze variations in th...

background apoptosis or programmed cell death is an essential process for elimination of damaged cells. also, induction of apoptosis is fundamental for treating cancer. screening for agents that induce apoptosis in tumor cells help in the development of novel agents for cancer treatment. numerous studies suggest that the exposure of tumor cells to statins can lead to cell death via two separate...

Recognition of the molecular mechanisms of cAMP action against DNA damage-induced apoptosis can be useful to improve the efficacy of DNA damaging therapeutic agents. Considering the critical role of bcl-2-associated death promoter (BAD) and p53 proteins in DNA damage -induced apoptosis, the aim of this study was to assess the effect of cAMP-elevating agents on these proteins in doxorubicin-trea...

objective(s): the role of aluminum (al) in the pathogenesis of neurodegenerative diseases has been implicated in several studies. however, the exact mechanisms of cytotoxic effects of al have not been elucidated yet. the aim of this study was to investigate the effect of l-type calcium channel antagonist, nimodipine (nm), and lithium chloride (licl) on al-induced toxicity in pc12 cells. materia...

the protective effects of rheum tanguticum polysaccharide 1 (rtp1), which is extracted from the chinese traditional medicine rheum tanguticum, on radiation-induced intestinal mucosal injury was investigated. rat intestinal crypt epithelial cells (iec-6 cells) and sprague-dawley rats were each divided into control, irradiated and rtp1-pretreated irradiated groups. after irradiation, cell surviva...

Introduction: 3-4, methylenedioxymethamphetamine (MDMA) causes apoptosis in nervous system and several studies suggest that oxidative stress contributes to MDMA-induced neurotoxicity. The aim of this study is to examine the effects of N-acetyl-L-Cystein (NAC) as an antioxidant on MDMA-induced apoptosis. Methods: 21 Sprague dawley male rats (200-250mg) were treated with MDMA (2×0,5mg/kg) or MDMA...

objective(s):pharmacological studies showed that the extracts of jin yin hua and its active constituents have lipid lowering, antipyretic, hepatoprotective, cytoprotective, antimicrobial, antibiotic, antioxidative, antiviral, and anti-inflammatory effects. the purpose of the present study was to investigate the protective effects of caffeoylquinic acids (cqas) from jin yin hua against hydrogen ...

objective(s):micrornas (mirnas) are small non-coding rna molecules that regulate gene expression. they have important roles in kidney development, homeostasis and disease, and participate in the onset and progression of tubulointerstitial sclerosis and end-stage glomerular lesions that occur in various forms of chronic kidney disease (ckd). in the present study, we elucidated the role of micror...

objective(s):one cause of cigarette smoking is oxidative stress that may alter the cellular antioxidant defense system, induce apoptosis in lung tissue, inflammation and damage in liver, lung, and kidney. it has been shown that chinese green tea (cgt) (lung chen tea) has higher antioxidant property than black tea. in this paper, we will explore the preventive effect of cgt on cigarette smoke-in...

measles virus (mv) is a highly contagious agent which causes a major health problem in developing countries. we studied the effect of buthionine sulfoximine (bso) on the replication of an aik-hdc strain of mv and its induced apoptosis in vero cell lines. methods: in this study, toxicity of bso on vero cells was investigated first, resulted in determination of sub-lethal or non-toxic concentrati...