Biomedical subjects

A V Markov

Publications and source records attributed to A V Markov.

22 records · Page 2Linked to original sources

PubMedDate not supplied

[Pilot results of using tamsulone-FS in patients with prostatic adenoma according to the results of a randomized multicenter comparative trial].

Tamsulone-FS--a novel Russian alpha1A/D-adrenoblocker (Farm-Syntez)--was studied in a randomized multicenter comparative trial in patients with prostatic adenoma. Pilot results agreed with other trials published in the literature and demonstrated tamsulone-FS efficacy and safety for management of lower urinary tract symptoms caused by prostatic adenoma. The efficacy and safety of tamsulone-FS was comparable to those of omnik. This drug can be recommended for wide clinical practice in prostatic adenoma. It is registered by Roszdravnadzor (certificate N LC-000859 of 03.11.2005) and allowed for production and sale.

Adrenergic alpha-Antagonists↗

PubMedDate not supplied

[Hypothesis of "immunological testing" of partners--systems of "friend and foe" recognition in historical prospect].

The hypothesis of "autoimmune testing" of mating partners assumes formation of individual system of perception on the basis of an immunologic principle, i.e. by lifetime selection of "direct" or "reverse casts" of own key antigens or signal molecules. Such system provides the coordinated change of signaling systems and system of their perception at formation of new adaptations that leads to automatic formation of reproductive isolation within the limited number of generations. Presence of the "friend-foe" recognition systems practically in all living organisms assumes formation of potential mating partners "autoimmune testing" mechanisms at the earliest evolution stages. In this article we analyze possible mechanisms of a "friend and foe" discrimination with MHC-proteins and their homologues in historical prospect--from bacteria to the lower Chordates.

Animals↗

PubMedDate not supplied

[Properties of hemicellulases of the enzyme complex from Trichoderma longibrachiatum].

Six xylan-hydrolyzing enzymes have been isolated from the preparations Celloviridin G20x and Xybeten-Xyl, obtained previously based on the strain Trichoderma longibrachiatum (Trichoderma reesei) TW-1. The enzymes isolated were represented by three xylanases (XYLs), XYL I (20 kDa, pi 5.5), XYL II (21 kDa, pI 9.5), XYL III (30 kDa, pI 9.1); endoglucanase I (EG I), an enzyme exhibiting xylanase activity (57 kDa, pI 4.6); and two exodepolymerases, beta-xylosidase (beta-XYL; 80 kDa, pI 4.5) and alpha-L-arabinofuranosidase I (alpha-L-AF I; 55 kDa, pI 7.4). The substrate specificity of the enzymes isolated was determined. XYL II exhibited maximum specific xylanase activity (190 U/mg). The content of the enzymes in the preparation was assessed. Maximum contributions to the total xylanase activities of the preparations Celloviridin G20x and Xy-beten-Xyl were made by EG I and XYL II, respectively. Effects of temperature and pH on the enzyme activities, their stabilities under various conditions, and the kinetics of exhaustive hydrolysis of glucuronoxylan and arabinoxylan were studied. Combinations of endodepolymerases (XYL I, XYL II, XYL III, or EG I) and exodepolymerases (alpha-L-AF I or beta-XYL) produced synergistic effects on arabinoxylan cleavage. The reverse was the case when endodepolymerases, such as XYL I or EG I, were combined with alpha-L-AF I.

Enzyme Stability↗

PubMedDate not supplied

[New cellulases efficiently hydrolyzing lignocellulose pulp].

Commercial and pilot enzyme preparations from fungi of the genera Penicillium and Trichoderma have been compared with regard to their action on conifer wood pretreated with acidified aqueous ethanol (organosolve). In most experiments, enzymes from the genus Penicillium allowed higher yields of reducing sugars and glucose than those from Trichoderma. High beta-glucosidase activity is essential for deep pulp hydrolysis.

Cellulases↗