[Diagnostics and treatment of large splenic artery aneurysms illustrated by two clinical cases presentation].

The authors analyze the clinical course of large splenic artery aneurysms (SAA) accidentally identified in two patients. In the first case 4.5×4.

[Optimization of protein hydrolysis by Bacillus subtilis alkaline proteinase].

Casein hydrolysis by alkaline proteinase from Bacillus subtilis str. 72 had been investigated. It has been shown that the hydrolytic rate depends on the substrate concentration and declines rapidly with time even at low protein concentrations.

[Effect of alcohols on the rate of cholinesterase decarbamoylation].

Butanol-1 and butandiol-1,4 are shown to increase the decarbamoylation rate of N-methylcarbamoyl- and N,N-dimethylcarbamoyl-cholinesterase. It is mainly due to the formation of a ternary complex NEA which is decomposed in 2,5 times faster than corbamoyl-enzyme EA. This is an evidence for the presence of some allosteric center in cholinesterase which is capable of binding alcohols.

[Effect of nucleophiles on the conversion of choline esters under the action of cholinesterase].

It is shown that effect of alcohols ROH on the hydrolysis of butyryl-choline and acetylcholine by choline esterase (E. C. 3.