Background: Xanthomonas campestris is a biopolymer producing gram negative bacterium. Production of xanthan biopolymer can be affected by different extrinsic factors as well as surfactants. Hitherto, effects of nonionic surfactants on xanthan production have been studied in a limited number of articles.Objective: In the present study, nonionic surfactants...

Thyrotropin stimulates the incorporation of 32P into phospholipids of thyroid slices incubated with 32P04. To determine whether this effect could be secondary merely to an increase in the specific activity of the terminal (y) P of ATP, a precursor of phospholipid P, the effect of thyrotropin on calf thyroid slice ATP was measured with an assay which is selective for ATP-T-~~P specific activity....

Thyrotropin stimulates the incorporation of 32P into phospholipids of thyroid slices incubated with 32P04. To determine whether this effect could be secondary merely to an increase in the specific activity of the terminal (y) P of ATP, a precursor of phospholipid P, the effect of thyrotropin on calf thyroid slice ATP was measured with an assay which is selective for ATP-T-~~P specific activity....

The mitochondrial ATP-sensitive potassium channel (mK(ATP)) is important in cardioprotection, although the channel remains molecularly undefined. Several studies have demonstrated that mitochondrial complex II inhibitors activate the mK(ATP), suggesting a potential role for complex II in channel composition or regulation. However, these inhibitors activate mK(ATP) at concentrations which do not...

The aim of this study was to investigate the effect of PAF supplementation in semen extender on ATP content in cryopreserved bull spermatozoa used for artificial insemination at different time intervals. Cryopreserved semen was treated with different concentrations of PAF: 1×10-5M, 1×10-6M, 1×10-7M, 1×10-8M and 1×10-9M at 37°C. In the present work we showed that content of ATP in cryopreserved ...