CO2-driven seawater acidification has been demonstrated to enhance intestinal bicarbonate secretion rates in teleosts, leading to an increased release of CaCO3 under simulated ocean acidification scenarios. In this study, we investigated if increasing CO2 levels stimulate the intestinal acid-base regulatory machinery of Atlantic cod (Gadus morhua) and whether temperatures at the upper limit of ...

A zwitterionic bis(guanidinium) ionophore bearing an anionic closo-borane cluster (1) and a dihydrochloride analogue (2) are investigated in polymeric membrane ion-selective electrodes (ISEs). Both compounds have been previously shown to complex and selectively extract oxoanions. By systematic variation of the kind and concentration of the ion-exchanger sites in the membrane, the optimal perfor...

Kedarcidin, a new chromoprotein antitumor antibiotic, was isolated from the culture broth of a novel actinomycete strain L585-6 (ATCC 53650). The antibiotic was recovered from the culture filtrate by adsorption to QAE ion exchanger and purified by successive application of gel filtration and ion exchange chromatography with Sephadex G-50 and DEAE-Sephadex, respectively. Kedarcidin is an acidic ...

Adsorption using activated carbon and ion-exchange is used to remove a range of organic compounds and ammonia respectively from treated wastewaters. Such treatment may follow secondary biological treatment to reduce BOD. Organic nitrogen (e.g. proteins) is degraded to ammonia and residual organic compounds may also be present following secondary treatment. Residual organic compounds may be thos...

Phospholemman (PLM), a member of the FXYD family of regulators of ion transport, is a major sarcolemmal substrate for protein kinases A and C in cardiac and skeletal muscle. In the heart, PLM co-localizes and co-immunoprecipitates with Na(+)-K(+)-ATPase, Na(+)/Ca(2+) exchanger, and L-type Ca(2+) channel. Functionally, when phosphorylated at serine(68), PLM stimulates Na(+)-K(+)-ATPase but inhib...

Relevance. Modern livestock breeders face an important task of producing organic products, in Russia this is regulated by the Federal Law “On Organic Products” (from 01.01.2020), it allows producers to enter state register and mark products with “organic” sign. There a problem deterioration quality milk, low content fat, protein, SOMO, deficiency macro-and microelements, vitamins, which associa...

Abstract Layered silicates (LS, clays) are a composite group of minerals whose industrial interest and technological applications progressively expanding, spanning from catalysis to biomedicine. However, the compatibility LS with biological systems is not clear, mechanistic data about biophysicochemical interactions at interface biomembranes scarce. Here, cell membrane damage, assessed using re...

The local anesthetic dibucaine inhibited respiration-dependent contraction mediated by the K(+)/H(+) antiport system of isolated corn mitochondria. Respiration declined concurrently. Nigericin, an exogenous K(+)/H(+) exchanger, restored ion efflux in dibucaine-blocked corn mitochondria. It was concluded that dibucaine inhibited ion efflux via blockage of the K(+)/H(+) antiport. Further experime...