Influence of recombinant erythropoietin on mesenchymal stem cells proliferation and differentiation during cultivation on allogenic bone matrix

Effectiveness of mesenchymal stem cells(MSCs) proliferation and differentiation wasstudied after addition of medicinal productcontaining human recombinant erythropoietin (rhEPO)into enriched culture medium with components for osteoandangiogenesis. Cultivation of mesenchymal stem cellsunder static conditions using “cocktail” of growth factorsand rhEPO allowed to populate allogenic discs-scaffoldswith connective tissue formations with the participationof osteoblasts and elongated multicellular structures,which formed after endothelium-like cells fusion. In thepresence of rhEPO MSCs differentiates more effectively inosteogenic direction than in angiogenic

Функционально замещенные сложные эфиры и диэфиры - производные селективно восстановленных безальдегидов ванилинового ряда

By selective reduction of vanillin-related benzaldehydes, using NaBH4 and Na [BH(OAc)3], the corresponding alcohols and diols have been synthesized. Their esterification by acyl chlorides in the presence of Et3N afforded functionally substituted esters and diesters containing fragments of heterocyclic compounds.Селективным восстановлением замещенных бензальдегидов ванилинового ряда с помощью NaBH4 или Na[BH(OAc)3] синтезированы спирты и диолы, их этерификацией хлорангидридами карбоновых кислот в присутствии Et3N получены функционально замещенные сложные эфиры и диэфиры, содержащие фрагменты гетероциклических соединений

Синтез метиловых эфиров ( E, S)-2-арилиденамино-4-метилвалериановых кислот

By the reaction of L-leucine methyl ester hydrochloride with vanniline and vanillale ethers or esters, corresponding methyl esters of (Е,S)-2-arylidenamino-4-methylpentanoic acids have been synthesised.Конденсацией замещенных бензальдегидов ванилинового ряда с гидрохлоридом метилового эфира L-лейцина в присутствии гидрокарбоната натрия (при соотношении реагентов, равном 1:1:1) были синтезированы хиральные (Е,S)-алкилароматические азометины (основания Шиффа), содержащие простые и сложноэфирные группы

Эффективность комбинированной противовирусной терапии у детей с хроническим гепатитом С

The paper presents the results of the research on effectiveness of combined antiviral therapy conducted with pegylated interferon alpha 2b of prolonged action (Peginterferon alpha 2b at a dose of 60 mcg/m2 per week) and Rebetol (Ribavirin at a dose of 15 mg/kg per day) in 26 children with chronic viral hepatitis C aged from 3 to 17, who underwent regular medical check-ups in City Clinical Hospital № 20 named after I.S. Berzon in Krasnoyarsk. Evaluation of effectiveness of combined antiviral therapy revealed that patients with genotype 1 had an immediate virologic response in 78,5% of cases, 83,3% of patients with genotype 2, 3 had a stable virologic response.В работе представлены результаты исследования по изучению эффективности комбинированной противовирусной терапии с использованием пегилированного интерферона альфа2b bпролонгированного действия (Пегинтерферон-альфа2b из расчета 60 мкг/м2 в нед.) и Ребетола (рибавирина из расчета 15 мг/кг в день) у 26 детей с хроническим вирусным гепатитом С в возрасте 3–17 лет, состоящих на учете в диспансерном кабинете Клинической городской больницы № 20 им. И.С. Берзона г. Красноярска. При оценке эффективности комбинированной противовирусной терапии выявлено, что у пациентов с генотипом 1 непосредственный вирусологический ответ имел место в 78,5% случаев, устойчивый вирусологический ответ достигнут у 83,3% больных с генотипом 2, 3

Замещенные N-[изоксазол(изотиазол)-3-ил(метилен)метил]ариламины: синтез, комплексы с палладием и их каталитическая активность в водных средах

Schiff bases have been synthesized from substituted isoxazol- and isothiazol-3-carbaldehydes by condensation with biphenyl- and naphthyl amines. Reduction of azomethines obtained affords the corresponding amines. It has been shown that synthesized N-ligands form the palladium complexes possessing high catalytic activity in Suzuki reaction in aqueous and aqueous-alcohol media.Осуществлен молекулярный дизайн и выполнен синтез азометинов на основе замещенных изоксазол- и изотиазол-3-карбальдегидов по реакции с бифенил- и нафтиламинами. Установлено, что азометины образуются в виде Е-изомера. Восстановление полученных азометинов приводит к соответствующим аминам. Показано, что синтезированные N-лиганды образуют с хлоридом палладия комплексы, обладающие высокой каталитической активностью в реакции Сузуки в водной и водно-спиртовой средах. Реакции протекают с практически количественными выходами, что позволяет максимально упростить процедуру выделения целевых соединений. Введение карбоксильной группы в ароматический фрагмент для изоксазольных комплексов почти не влияет на каталитическую активность. В случае изотиазольных комплексов, каталитическая активность возрастает, причем эффект особенно хорошо заметен при 20оС

Differentiation-Inducing Factor-1 and -2 Function also as Modulators for Dictyostelium Chemotaxis

BackgroundIn the early stages of development of the cellular slime mold Dictyostelium discoideum, chemotaxis toward cAMP plays a pivotal role in organizing discrete cells into a multicellular structure. In this process, a series of signaling molecules, such as G-protein-coupled cell surface receptors for cAMP, phosphatidylinositol metabolites, and cyclic nucleotides, function as the signal transducers for controlling dynamics of cytoskeleton. Differentiation-inducing factor-1 and -2 (DIF-1 and DIF-2) were originally identified as the factors (chlorinated alkylphenones) that induce Dictyostelium stalk cell differentiation, but it remained unknown whether the DIFs had any other physiologic functions.Methodology/Principal FindingsTo further elucidate the functions of DIFs, in the present study we investigated their effects on chemotaxis under various conditions. Quite interestingly, in shallow cAMP gradients, DIF-1 suppressed chemotaxis whereas DIF-2 promoted it greatly. Analyses with various mutants revealed that DIF-1 may inhibit chemotaxis, at least in part, via GbpB (a phosphodiesterase) and a decrease in the intracellular cGMP concentration ([cGMP]i). DIF-2, by contrast, may enhance chemotaxis, at least in part, via RegA (another phosphodiesterase) and an increase in [cGMP]i. Using null mutants for DimA and DimB, the transcription factors that are required for DIF-dependent prestalk differentiation, we also showed that the mechanisms for the modulation of chemotaxis by DIFs differ from those for the induction of cell differentiation by DIFs, at least in part.Conclusions/SignificanceOur findings indicate that DIF-1 and DIF-2 function as negative and positive modulators for Dictyostelium chemotaxis, respectively. To our knowledge, this is the first report in any organism of physiologic modulators (small molecules) for chemotaxis having differentiation-inducing activity

Distribution of the Octopamine Receptor AmOA1 in the Honey Bee Brain

Octopamine plays an important role in many behaviors in invertebrates. It acts via binding to G protein coupled receptors located on the plasma membrane of responsive cells. Several distinct subtypes of octopamine receptors have been found in invertebrates, yet little is known about the expression pattern of these different receptor subtypes and how each subtype may contribute to different behaviors. One honey bee (Apis mellifera) octopamine receptor, AmOA1, was recently cloned and characterized. Here we continue to characterize the AmOA1 receptor by investigating its distribution in the honey bee brain. We used two independent antibodies produced against two distinct peptides in the carboxyl-terminus to study the distribution of the AmOA1 receptor in the honey bee brain. We found that both anti-AmOA1 antibodies revealed labeling of cell body clusters throughout the brain and within the following brain neuropils: the antennal lobes; the calyces, pedunculus, vertical (alpha, gamma) and medial (beta) lobes of the mushroom body; the optic lobes; the subesophageal ganglion; and the central complex. Double immunofluorescence staining using anti-GABA and anti-AmOA1 receptor antibodies revealed that a population of inhibitory GABAergic local interneurons in the antennal lobes express the AmOA1 receptor in the cell bodies, axons and their endings in the glomeruli. In the mushroom bodies, AmOA1 receptors are expressed in a subpopulation of inhibitory GABAergic feedback neurons that ends in the visual (outer half of basal ring and collar regions) and olfactory (lip and inner basal ring region) calyx neuropils, as well as in the collar and lip zones of the vertical and medial lobes. The data suggest that one effect of octopamine via AmOA1 in the antennal lobe and mushroom body is to modulate inhibitory neurons

Russian consensus statement on the diagnosis and treatment of patients with carotid stenosis

Carotid stenosis is a multidisciplinary problem that requires the involvement of a specialists’ team, including cardiovascular surgeons, neurosurgeons, endovascular surgeons, cardiologists, neurologists, and internists. In this consensus statement, a group of experts considered the main stages of diagnosing carotid stenosis, as well as discussed, the necessary prevention methods and features of choosing the optimal treatment approach. The aim was to provide concise and structured information on the management of patients with carotid stenosis. This document was developed based on the updated clinical guidelines of the European Society for Vascular Surgery and the American Association for Vascular Surgery, taking into account the consensus opinion of Russian experts