Maslinic acid (MA) and oleanolic acid (OA), the main triterpenic acids present in olive, have important properties for health and disease prevention. MA selectively inhibits cell proliferation of the HT29 human colon-cancer cell line by inducing selective apoptosis. For measuring the MA and OA concentration inside the cell and in the culture medium, a new HPLC-MS procedure has been developed. W...

Apoptosis is a critical determinant of tissue mass homeostasis and may play a role in carcinogenesis. The aim of the present study was to investigate anoxia-induced cell death in colon-derived HT29 cells and the effect of nitric oxide on this phenomenon. It was found that HT29 cells subjected to anoxia undergo apoptosis in a time dependent manner, as determined by DNA fragmentation and Hoechst-...

Objective(s): The aim of this study was to evaluate the effects of ground black seeds on renal tubular cell apoptosis following ischemia/reperfusion (I/R) injury in rats. Materials and Methods: Forty male Wistar rats were randomly allocated into 5 equal groups including Sham, I/R model and three I/R+ black seeds (5, 10 and 20%)-treated groups. I/R groups’ kidneys were subjected to 60 min of isc...

introduction: obstructive cholestasis is associated with overproduction of endogenous opioids (eop) ,nitric oxide (no) and cytokines in the blood stream. these consequences can affect sex hormones. sincefertility is a result of physiological balance of sex hormones, we investigated the relationship betweenobstructive cholestasis and sex hormones and apoptotic germ cells in adult male rats. mate...

Introduction: Repetitive cortical spreading depression (CSD) can lead to cell death in immature brain tissue. Caspases are involved in neuronal cell death in several CSD-related neurological disorders. Yet, whether repetitive CSD itself can induce caspase activation in adult or juvenile tissue remains unknown. Inducing repetitive CSD in somatosensory cortices of juvenile and adult rats in vivo,...

Background: Noscapine is a water soluble alkaloid with antitussive property and very less toxicity. It is obtained from the Papaveraceae family. Recently, new pharmacological properties such as anticancer, anti stroke and anti-angiogenic effects are introduced. There is no scientific report on noscapine effect on reproductive system. The aim of present study was to determine in vitro effect of ...

A set of PEGylated derivatives of oleanolic and maslinic acids has been semi-synthesised, attaching ethylene glycol, diethylene glycol, triethylene glycol or tetraethylene glycol to the C-28 carboxyl group of these natural triterpenes and some derivatives. Another set of PEGylated derivatives has been semi-synthesised by connecting the same four ethylene glycols to the hydroxyl groups of the A ...

The cellular apoptosis susceptibility protein (CAS) is the human homologue of the product of the essential yeast chromosome segregation gene, CSE1, and has important roles in tumor necrosis factor (TNF)-induced apoptosis and cell proliferation. In this study, we used immunoblotting and immunohistochemistry to look at CAS expression in human hepatocellular carcinoma (HCC) cells. We also studied ...

It is reported that apple polysaccharide can prevent colon cancer growth and impede colon cancer progression. Apple oligosaccharide was prepared by the combination of alkaline hydrolysis and enzymolysis of apple polysaccharides, and purified by anion column chromatography. The aim of this study is to explore the effect of apple oligosaccharide on the cellular viability of human colon carcinoma ...

Objective Diazinon is an organophosphate pesticide and today this pesticide is mostly used in agriculture. In this study, we analyzed the effects of diazinon and vitamin E on apoptosis and the proliferation of germ cells in rat testis. MaterialsAndMethods In this experimental study 30 male wistar rats, were divided into five groups (N=6). Control, sham (received olive oil), experimental group 1...