Temirbolat T. Berezov

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Several previous studies reported the association of the soluble form of amyloid beta (sA beta) protein, a major constituent of amyloid deposits in Alzheimer's disease (AD), with normal blood, cerebrospinal fluid (CSF) and central nervous system high density lipoproteins (HDLs). The present report aimed to elucidate the pattern of sA beta and apolipoprotein(More)
The role of various matrix metalloproteinases (MMP)—such as gelatinases, stromelysins, matrilysin, collagenase-3, and membrane-bound MMP (MB-MMP)—in tumor invasion and metastasis is discussed. Data suggesting significance for malignant growth of the expression level of these enzymes and also of their activators and inhibitors are presented. It is concluded(More)
We report studies of the interaction of Alzheimer's amyloid beta protein (A beta) with normal human plasma high density lipoprotein (HDL), aiming to clarify to which lipoprotein (LP) structural constituent (apolipoprotein or lipid) soluble A beta is primarily bound. Purified HDLs were incubated with biotinylated A beta 1-40 followed by LP repurification by(More)
This paper deals with the justification of a new hypothesis that in the of transition of NMDA receptors from normal into excitotoxicic functioning the decisive role plays the time coarse of activation of specific MAP kinase, which is sensitive to the extracellulary factors, ERK 1/2 (extracellulary regulated kinase, isoforms 1 and 2). As it is known,(More)
This review summarizes data on the properties of L-lysine alpha-oxidase, an enzyme that belongs to the group of oxidases of L-amino acids. This enzyme acts virtually only on L-lysine with a rather low Km yielding alpha-keto-epsilon-aminocaproic acid. The decrease in the level of the essential amino acid L-lysine and the formation of hydrogen peroxide during(More)
Here we present the results of comparative immunoenzyme assay of the initial serum levels of VEGF in breast cancer patients (stages T1N0M0 and T2N0M0) and apparently healthy women (controls). It was found that VEGF concentrations in the serum of patients with breast cancer stages T1N0M0 and T2N0M0 significantly surpassed the control levels. Increased levels(More)
Glutamine(asparagine)ase catalyses desamidation of both L-glutamine and L-asparagine, and their D-isomers. In this study the two-pharmacophore models of main enzyme substrates and their hydrolysed analogues were design. The received models reflect two stage of substrate interaction with the enzyme active site. These models allow to explain the wide(More)
This review considers some aspects of the biochemistry of beta-amyloid, a protein which produces insoluble deposits in the brain. These deposits are a specific morphological feature of Alzheimer's disease, Down's syndrome, and senile dementia. Our contribution to the concept of a soluble form of beta-amyloid as of a normal human protein is presented.
Despite a decade long universal publication in favor of the view on amyloid-beta (A beta) as Alzheimer's disease culprit (solely neurotoxic for neurons and brain tissue), current scientific evidence leaves little doubt that A beta serves an essential role at synapse and in synaptic structure-functional plasticity that underlie learning and memory.(More)