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Suhovskih A.V.,Novosibirsk State University | Aidagulova S.V.,Novosibirsk State Medical University | Kashuba V.I.,NASU Institute of Molecular Biology and Genetics | Kashuba V.I.,Karolinska Institutet | Grigorieva E.V.,Novosibirsk State University
Cell and Tissue Research | Year: 2015

Glycosylation changes occur widely in colon tumours, suggesting glycosylated molecules as potential biomarkers for colon cancer diagnostics. In this study, proteoglycans (PGs) expression levels and their transcriptional patterns are investigated in human colon tumours in vivo and carcinoma cells in vitro. According to RT-PCR analysis, normal and cancer colon tissues expressed a specific set of PGs (syndecan-1, perlecan, decorin, biglycan, versican, NG2/CSPG4, serglycin, lumican, CD44), while the expression of glypican-1, brevican and aggrecan was almost undetectable. Overall transcriptional activity of the PGs in normal and cancer tissues was similar, although expression patterns were different. Expression of decorin and perlecan was down-regulated 2-fold in colon tumours, while biglycan and versican expression was significantly up-regulated (6-fold and 3-fold, respectively). Expression of collagen1A1 was also increased 6-fold in colon tumours. However, conventional HCT-116 colon carcinoma and AG2 colon cancer-initiating cells did not express biglycan and decorin and were versican-positive and -negative, respectively, demonstrating an extracellular origin of the PGs in cancer tissue. Selective expression of heparan sulfate (HS) proteoglycans syndecan-1 and perlecan in the AG2 colon cancer-initiating cell line suggests these PGs as potential biomarkers for cancer stem cells. Overall transcriptional activity of the HS biosynthetic system was similar in normal and cancer tissues, although significant up-regulation of extracellular sulfatases SULF1/2 argues for a possible distortion of HS sulfation patterns in colon tumours. Taken together, the obtained results suggest versican, biglycan, collagen1A1 and SULF1/2 expression as potential microenvironmental biomarkers and/or targets for colon cancer diagnostics and treatment. © 2015, Springer-Verlag Berlin Heidelberg. Source

Pupyshev A.B.,Novosibirsk State Medical University
Tsitologiya | Year: 2011

Lysosomal membrane labilizing agents (incl. proapoptotic proteins of Bcl-2 family, LAPF, p53), estimation of lysosomal membrane permeabilization in living cells, the new data on differential permeabilization of lysosomal membranes, membrane stabilizing factors (incl. Hsp70), relations between lysosomal membrane damage, and initiation of apoptosis were considered. Signal effect of lysosomal membrane permeabilization is caused preferentially by release of cathepsin B and D in cytosol. Subsequent numerous pathways of apoptogenic signalization include proteolytic attack/activation on signal cytosolic proteins, mitochondria, procaspases, cell nuclei. The mainstream of the cell damage is connected with activation pf proapoptotic Bid and Bax, leading to permeabilization of the outer mitochondrial membrane, release of cytochrome c into cytosol and activation of caspase cascade. Translocation of the lysosoma enzymes in cytosol is capable to induce both the caspase-dependent and caspase-independent paths of apoptosis. Source

Krivoshapkin A.L.,Novosibirsk State Medical University | Zelman V.L.,University of Southern California
World Neurosurgery | Year: 2012

There is archaeological evidence that the first neurosurgical procedure in what is now known as Siberia was performed in 8005 ± 100 B.C. According to signs of bone growth, perhaps more than half of the individuals who received the ancient trepanations survived. In Siberia, the first operations on the human brain and spinal cord were performed in 1909 at Tomsk University Hospital by the outstanding Russian surgeon and professor Vladimir M. Mysh. Professor Mysh initially moved from Saint Petersburg to Tomsk and later to Novosibirsk. Nicolay N. Burdenko, the founder of Russian neurosurgery and the Moscow Neurosurgical Institution, began his medical education at the Tomsk Imperial University. In the 1950s, Professor Ksenia I. Kharitonova exerted her great influence upon the development of neurosurgery in Siberia. Since 1955, and for 30 years thereafter, Professor Kharitonova was recognized as a principal leader of Siberian neurosurgery. She applied every effort to spread neurosurgical knowledge, and she popularized best practices around Siberia and the Far East. Perestroika deconstructed and ultimately eliminated the orderly system of neurosurgical service in the Soviet Union. From another perspective, the process opened the window to the world. Fully equipped centers and clinics with state-of-the-art techniques for neuro-oncology, cerebrovascular diseases, neurotrauma, and spinal pathology management in Novosibirsk, Barnaul, Kemerovo, and Irkutsk were enabled. © 2012 Elsevier Inc. Source

Olennikov D.N.,Russian Academy of Sciences | Kruglova M.Yu.,Novosibirsk State Medical University
Chemistry of Natural Compounds | Year: 2013

A total of 48 compounds and the new flavonoid glycoside ulmarioside, which was identified as quercetin-4′-O-α-rhamnopyranosyl-(1→6)- β-glucopyranoside (quercetin-4′-O-rutinoside), were isolated from Filipendula ulmaria (Rosaceae). Phenolic compounds from six species of Filipendula (F. camtschatica, F. denudata,F. palmata, F. stepposa, F. ulmaria, F. vulgaris) growing in Russia were compared. © 2013 Springer Science+Business Media New York. Source

Bondar' I.A.,Novosibirsk State Medical University | Shabel'nikova O.Y.,Novosibirsk State Regional Hospital
Diabetes Mellitus | Year: 2013

More than 100 genes associated with the risk of type 2 diabetes mellitus (T2DM) are now established. Most of them affect insulin secretion, adipogenesis and insulin resistance, but the exact molecular mechanisms determining their involvement in the pathogenesis of T2DM are not understood completely. Source

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