Orbifold Singularities, Lie Algebras of the Third Kind (LATKes), and Pure Yang-Mills with Matter

We discover the unique, simple Lie Algebra of the Third Kind, or LATKe, that stems from codimension 6 orbifold singularities and gives rise to a kind of Yang-Mills theory which simultaneously is pure and contains matter. The root space of the LATKe is 1-dimensional and its Dynkin diagram consists of one point. The uniqueness of the LATKe is a vacuum selection mechanism.Comment: 42 pages; version appearing in JM

Cohomology of Filippov algebras and an analogue of Whitehead's lemma

We show that two cohomological properties of semisimple Lie algebras also hold for Filippov (n-Lie) algebras, namely, that semisimple n-Lie algebras do not admit non-trivial central extensions and that they are rigid i.e., cannot be deformed in Gerstenhaber sense. This result is the analogue of Whitehead's Lemma for Filippov algebras. A few comments about the n-Leibniz algebras case are made at the end.Comment: plain latex, no figures, 29 page

On Deformations of n-Lie algebras

The aim of this paper is to review the deformation theory of $n$-Lie algebras. We summarize the 1-parameter formal deformation theory and provide a generalized approach using any unital commutative associative algebra as a deformation base. Moreover, we discuss degenerations and quantization of $n$-Lie algebras.Comment: Proceeding of the conference Dakar's Workshop in honor of Pr Amin Kaidi. arXiv admin note: text overlap with arXiv:hep-th/9602016 by other author

An astrocyte-dependent mechanism for neuronal rhythmogenesis

Communication between neurons rests on their capacity to change their firing pattern to encode different messages. For several vital functions, such as respiration and mastication, neurons need to generate a rhythmic firing pattern. Here we show in the rat trigeminal sensori-motor circuit for mastication that this ability depends on regulation of the extracellular Ca2+ concentration ([Ca2+]e) by astrocytes. In this circuit, astrocytes respond to sensory stimuli that induce neuronal rhythmic activity, and their blockade with a Ca2+ chelator prevents neurons from generating a rhythmic bursting pattern. This ability is restored by adding S100b, an astrocytic Ca2+-binding protein, to the extracellular space, while application of an anti-S100b antibody prevents generation of rhythmic activity. These results indicate that astrocytes regulate a fundamental neuronal property: the capacity to change firing pattern. These findings may have broad implications for many other neural networks whose functions depend on the generation of rhythmic activity

Изучение взаимосвязей экспрессии молекулярных маркеров на опухолевых и иммунокомпетентных клетках с чувствительностью к адъювантной и неоадъювантной терапии рака мочевого пузыря

Use of immunotherapy in treatment of muscle-invasive bladder cancer remains the most promising method in case of impossibility of chemotherapy with cisplatin or progression during cisplatin treatment. This approach is the method of choice and can prolong patient’s life. In particular, use of checkpoint inhibitors allows to obtain effective treatment of bladder cancer. However, to prescribe immunotherapeutic medication, patient must have point of application for these drugs. Individualized approach will allow to increase treatment effectiveness and disease prognosis while maximally improving the quality of life.Применение иммунотерапии в лечении мышечно-инвазивного рака мочевого пузыря остается наиболее перспективным методом в случае невозможности проведения химиотерапии цисплатином или прогрессирования на фоне лечения последним. Этот метод является методом выбора и может продлить жизнь больного. В частности, использование ингибиторов контрольных точек позволяет реализовать эффективное лечение рака мочевого пузыря. Однако для назначения иммунных препаратов необходимо наличие у пациента точек приложения действия этих средств. Именно персонифицированный подход позволит приумножить эффективность лечения и прогнозирования течения заболевания, максимально воздействуя на улучшение качества жизни

МИТОХОНДРИАЛЬНЫЙ БЕЛКОВЫЙ ПРОФИЛЬ И ЕГО РОЛЬ В ПАТОЛОГИЧЕСКИХ ПРОЦЕССАХ

Mitochondria import hundreds of different precursor proteins from the cytosol, and only 13 proteins are encoded by mtDNA itself. Recent investigations demonstrated real size of mitochondrial proteome and complexity of their functions There are many methods using for mitochondrial proteome profiling, that help to understand a molecular mechanisms of mitochondrial functions and identify the causes of disruptions that lead to different disorders. In this review we discuss a recent data in the field of mitochondrial proteomics.Собственная ДНК митохондрий кодирует лишь 13 полипептидов – субъединиц электронтранспортной цепи. Большинство же белков импортируются в митохондрии посредством различных механизмов. Последние исследования митохондриального протеома продемонстрировали истинные размеры и сложную функциональную организацию митохондриальных белковых профилей. Для протеомного профилирования митохондрий применяются различные технологии, которые в сумме представляют результаты, помогающие понять молекулярные механизмы функционирования органелл и выявить нарушения, приводящие к различным заболеваниям. В данном обзоре рассмотрены и проанализированны последние данные в области протеомики митохондрий и затронуты некоторые аспекты молекулярного патогенеза заболеваний дыхательной цепи

EFFECT OF LASER RADIATION ON PHOTOMAGNETIC MATERIALS BASED ON SILICON DOPED WITH IMPURITIES

The paper deals with the establishment of the features of the effect of laser modification in the double-pulse mode on the surface morphology of photo magnetic materials based on silicon doped with impurities

Pelvic floor reconstruction after total exenteration for radiation injuries of the pelvic organs (clinical case)

The objective is to present the clinical case of pelvic floor reconstruction after total exenteration.Clinical case. The formation of the combined fistula after surgical treatment and combined radiation therapy for uterine body cancer is presented in female patient (57 years old). The rectum and bladder were removed, the perineal tissue was excised and a vulvectomy was performed. The rectus abdominis muscle was mobilized with epigastric artery and moved to the perineum. The wound was healed by primary tension. The patient lives a full life, adapted, and does not require analgesic therapy.Conclusion. The treatment and diagnosis tactics for regional combined fistulas are not standardized, and surgical treatment is the method of choice, especially in cases where the patient has already had radiation therapy for malignancy and relapse