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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(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)
  • A. T. Kagramanova, L. D. Tischenko, T. T. Berezov
  • 2004
Irradiating the cells with the He-Ne laser on day 1 or 2 after seeding was found not to have increased the amount of ATP as compared to intact cells (Fig. 3), whereas irradiating them on day 3, 5, or 8 increased its level; their sensitivity to the radiation remained virtually the same and peaked on day 5 (190%) under the experimental conditions used. The(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)
In-depth scholar literature analysis of Alzheimer's disease neurodegenerative features of amyloid beta protein neurochemistry modification and excessive phosphorylation of tau protein (and associated neuronal cytoskeleton rearrangements) are secondary phenomena. At early disease stage these neurobiochemical mechanisms are reversible and serve to heal an(More)
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)
The importance of homeostasis of neural tissue to neuron functioning, the synaptic plasticity of the hippocampus, and laboratory animals' behavior was demonstrated by the authors earlier. A range of experimental data evidences that cholinergic neurotransmission, ionotropic and metabotropic receptors, excessive tau phosphorylation, alterations in(More)
Herein we describe the inhibitory effect of the synthetic peptide Abeta1-40, homologous to the major high-density lipoprotein-associated species of Alzheimer's amyloid beta protein (Abeta), on lipid biosynthesis in human hepatic HepG2 cells. This culture synthesizes various lipids from [14C]acetate as a precursor. Treatment of cells with different(More)