We hypothesize that a 2A degrees C drop in the temperature of inflowing capillary blood, as shown in our animal studies, has a substantial effect on lowering the diffusivity of metabolites in skeletal muscle, but the pathological microanatomy in the chronic phase of SCI is less dominant in affecting the local temperatures in and around muscle cells. In order to test this hypothesis, two-dimensional finite element (FE) models of cross sections through the microanatomy of muscle tissue were developed using COMSOL Multiphysics software for normal and SCI muscles. The models included muscle cells, extracellular matrix (ECM), and capillaries, each with its own geometrical, thermal,
and heat production properties. The SCI model configuration specifically included reduced cross section of myofibrils in favor of more ECM, less capillaries, and decreased blood inflow rate. After a 20-s heat transfer simulation, this website it was found that temperatures around the cells of Proteasome function the SCI muscle were approximately 2A degrees C lower than that in the normal muscle, that is, heat production from the muscle cell metabolism did not
compensate for the lower inflowing blood temperature in the SCI model. We conclude that the temperature and rate of inflowing capillary blood are the dominant factors determining the localized temperatures in the microarchitecture of an ischemic SCI muscle tissue. The altered SCI microanatomy was shown to be less influential. Taken together with the Stokes-Einstein theory, our results indicate that diffusivity of metabolites would be approximately 50% less around the cells Hippo pathway inhibitor of SCI muscle due to local cooling, which is yet another factor compromising tissue viability in the patients with SCI.”
“Purpose: To review literature on the relationship between the dose distribution in the thyroid gland and the incidence of radiation-induced
hypothyroidism in adults.\n\nMaterial and Methods: Articles were identified through a search in MEDLINE, EMBASE and the Cochrane Library. Approximately 2449 articles were screened and selected by inclusion- and exclusion criteria. Eventually, there were five papers that fulfilled the eligibility criteria to be included in this review.\n\nResults: The sample sizes of the reviewed studies vary from 57 to 390 patients. The incidence of hypothyroidism was much higher (23-53%) than would be expected in a non-irradiated cohort. There was a large heterogeneity between the studies regarding study design, estimation of the dose to the thyroid gland and definition of endpoints. In general, the relationship between thyroid gland volume absorbing 10-70 Gy (V10-V70), mean dose (Dmean), minimal dose (Dmin), maximum dose (Dmax) and point doses with hypothyroidism were analysed. An association between dose-volume parameters and hypothyroidism was found in two studies.\n\nConclusions: Hypothyroidism is frequently observed after radiation.