Redox regulatory system controls normal cellular functions. Controlled changes in redox couples potential serve as components for signal transduction, similarly to the phosphorylation cascade. Cellular redox biology requires both compartimentalisation and communication of redox systems: the thermodynamic disequilibrium of the major redox switches allows rapid and sensitive responses to perturba...

BACKGROUND/AIM Elevated uric acid level, an index of gout resulting from the over-activity of xanthine oxidase (XO), increases the risk of developing hypertension. However, research has shown that plant-derived inhibitors of XO and angiotensin 1-converting enzyme (ACE), two enzymes implicated in gout and hypertension, respectively, can prevent or ameliorate both diseases, without noticeable sid...

In this study, carbon-silica based acid catalysts derived from rice husks (RH) were successfully synthesised using microwave (MW) technology. The results showed that MW sulphonation produced Sulphur (S) content of 17.2–18.5 times higher than in raw RH. Fourier-transform Infrared Spectroscopy (FTIR) peak at 1035 cm?1 which corresponded to O?S?O stretching sulphonic (-SO3H) group. XRD sulfonated ...

The production of growth-inhibiting agents by suitably modifying the structures of growth-promoting substances has been shown to be feasible by previous investigations (Mcllwain [1940; 1941a]: considered -as parts 1 and 2 of the present series). In these cases evidence was obtained which showed that the inhibitory analogues produced their effects by limiting the organism's use of the correspond...

1. 2-Naphthylhydroxylamine and 2-nitrosonaphthalene were present in urine of dogs but not of guinea pigs, hamsters, rabbits or rats dosed with 2-naphthylamine. N-Acetyl-2-naphthylhydroxylamine and its O-sulphonic acid and O-glucosiduronic acid were not detected in the urine of any of these species. 2. Bile from rats dosed with 2-naphthylamine contained (2-naphthylamine N-glucosid)uronic acid an...

This study has developed an innovative method for the production of secondary metabolites starting from Cydonia oblonga Mill (quince) pulp callus culture. The qualitative and quantitative content phenolic triterpenic acids quince extract were elucidated by GC–MS, GC, HPLC-DAD-ESI-MSn. was rich 5-O-caffeoylquinic acid (5-CQA), 5-p-coumaroylquinic (5-p-CoQA) maslinic corosolic acid. Quince extrac...