The antiapoptotic effect of melatonin has been described in several systems. In this study, the antagonistic effect of the methoxyindole on dexamethasone-induced apoptosis in mouse thymocytes was examined. Melatonin decreased both DNA fragmentation, and the number of annexin V-positive cells incubated in the presence of dexamethasone. Analysis of the expression of the members of the Bcl-2 famil...

PURPOSE In the assessment of health risks of environmental pollutants, the method of dose addition and the method of independent action are used to assess mixture effects when no synergistic and/or antagonistic effects are present. Currently, no method exists to quantify synergistic and/or antagonistic effects for mixtures. The purpose of this paper is to develop the theoretical concepts of an ...

Antagonistic selection--where alleles at a locus have opposing effects on male and female fitness ("sexual antagonism") or between components of fitness ("antagonistic pleiotropy")--might play an important role in maintaining population genetic variation and in driving phylogenetic and genomic patterns of sexual dimorphism and life-history evolution. While prior theory has thoroughly characteri...

This study aimed to isolate rhizobacteria belonging the genus Pseudomonas with plant-growth-promoting properties that can be used in control of chickpea wilt disease caused by Fusarium oxysporum f. sp. ciceris (Foc). The production antifungal compounds isolated was assessed against two Foc isolates, coded Foc-S1 and Foc-S2. Strains E1FP13, E1FP4, E1PP7 were most effective Foc-S1, percentages 52...

The interactive effect of metal ions namely chromium and iron has been studied under controlled conditions on the diazotropic cyanobacterium Hapalosiphon stuhlmannii and the photosynthetic green alga Scenedesmus quadricauda over the exponential growth period of the cells. The work describes by employing an exponential cell growth model, the effect of metal ions both individually and in combinat...