Сверхвысокомолекулярный полиэтилен (СВМПЭ) как основа клеточного матрикса для создания 3D клеточной культуры

The study is devoted to the development of an artificial material based on the ultrahigh-molecular weight polyethylene (UHMWPE) with a porous or cellular 3D structure as a cellular matrix – a framework for growing cell cultures. The development of such matrix provides support for neuronal cell culture under conditions that mimick those that exist in the living body. Typically, in vitro cellular studies are conducted in a 2D format, which limits intercellular interactions, morphology, differentiation, survival, signaling responses, gene expression and proliferation that are found in vivo. Here, we propose to use UHMWPE as a material of the cellular matrix, the ultra-high molecular weight polyethylene. UHMWP is a bioinert substance, wich allows forming a system of open connected pores needed to provide cellular life conditions with supply of nutrients and oxygen as well as the removal of waste products, the possibility of intercellular communication, etc. As a result, the use of UHMWPE as a cellular matrix will allow to study the processes occurring in cells in the 3D environment.Работа посвящена анализу свойств искусственного материала на основе сверхвысокомолекулярного полиэтилена (СВМПЭ) с пористой или ячеистой 3D-структурой, который используется в качестве клеточного матрикса – каркаса для выращивания культуры клеток. Разработка такого каркаса обеспечивает культивирование клеточной культуры в условиях, приближенных к тем, которые существуют в живом организме. Как правило, клеточные исследования in vitro проводят в 2D-формате, который по своей природе ограничивает межклеточные взаимодействия, морфологию, дифференцировку, выживаемость, сигнальные ответы, экспрессию генов и пролиферацию, наблюдаемые in vivo. В качестве материала клеточного матрикса предлагается использовать биоинертный сверхвысокомолекулярный полиэтилен (СВМПЭ), который позволяет сформировать систему открытых связанных пор с целью обеспечения клеточной жизнедеятельности – “подвод” питания и кислорода, удаление продуктов жизнедеятельности, возможность осуществления межклеточных связей и т.д. В результате использование СВМПЭ в качестве клеточного матрикса позволит изучить процессы, протекающие в клетках в условиях 3D-среды

Follow-up study of the patients operated for traumatic subdural hematomas

In 56 patients operated for traumatic subdural hematomas clinical manifestations were analysed (8 main syndromes of the remote period) as well as the degree of neurologic rehabilitation and the level of social-occupational adaptation. Such adaptation appeared to be rather high: 66,1% of the patients were able to resume work. The highest lethality was in the acute period; the worst rehabilitation and follow-up adaptation were observed in elderly and old patients who were in comatose state before the operation and had severe accompanying contusion of the brain. Policy of drug treatment was determined in patients with traumatic subdural hematomas regarding peculiarities and manifestations of the syndromes (urgent operation, if necessary - cranioplasty, psychologic support in the remote period, resorption therapy and symptomatic drugs)

Follow-up study of the patients operated for traumatic subdural hematomas

In 56 patients operated for traumatic subdural hematomas clinical manifestations were analysed (8 main syndromes of the remote period) as well as the degree of neurologic rehabilitation and the level of social-occupational adaptation. Such adaptation appeared to be rather high: 66,1% of the patients were able to resume work. The highest lethality was in the acute period; the worst rehabilitation and follow-up adaptation were observed in elderly and old patients who were in comatose state before the operation and had severe accompanying contusion of the brain. Policy of drug treatment was determined in patients with traumatic subdural hematomas regarding peculiarities and manifestations of the syndromes (urgent operation, if necessary - cranioplasty, psychologic support in the remote period, resorption therapy and symptomatic drugs)