نتایج جستجو برای: microgravity
تعداد نتایج: 3241 فیلتر نتایج به سال:
Objective(s): Studies have confirmed that microgravity, as a mechanical factor, influences both differentiation and function of mesenchymal stem cells. Here we investigated the effects of simulated microgravity on neural differentiation of human adipose-derived stem cells (ADSCs). Materials and Methods:We have used a fast rotating clinostat (clinorotation) to simulate microgravity condition. R...
Objective (s): Gravity could affect some system features and perform directly as an organizing field factor. Recent investigations have examined the titanium dioxide nanoparticles (TiO2 NPs) in biomedical applications, mostly in the cancer treatment field. This study aimed to evaluate the effects of simulated microgravity combined with TiO2 NPs in MDA-MB-231 cells proliferation for the first tim...
Since human beings could travel beyond the earth atmosphere, scientists started to investigate the effect of microgravity on human cells. Microgravity has different effects on normal and cancer cells, but the related mechanisms are not well-known till now. The aim of the present review is to focus on the consequences of exposing the cancer cells to reduced gravity. Some cancer cells organize th...
objective(s): studies have confirmed that microgravity, as a mechanical factor, influences both differentiation and function of mesenchymal stem cells. here we investigated the effects of simulated microgravity on neural differentiation of human adipose-derived stem cells (adscs). materials and methods:we have used a fast rotating clinostat (clinorotation) to simulate microgravity condition. re...
Introduction: Mesenchymal Stem Cells (MSCs) are multipotent cells capable of duplication and auto-recovery and distinction from various cells including chondrocytes, adipocytes, chondroblasts, fibroblasts, and osteoblasts. Human stem cells are always subject to local and external mechanical loads. External loads are caused by physical activity in external environment loading to infliction of st...
Background: Hindlimb Unloading (HLU) is used to simulate microgravity in rats and has been shown to decrease contractile response in the abdominal aorta. The aim of present study was to investigate the contractile responses of smooth muscle of thoracic aorta following acute and chronic microgravity treatment. Methods: Male adult rats (Wistar) were subjected to HLU for 3 and 20 days t...
The risk of leukemia and other radiation oriented diseases for astronauts increases with exposure to cosmic radiation. During the space missions, the blood and immune system change and the bones are affected by osteoporosis. In this research, a model, based on the human blood system, is presented for the study of the microgravity and the space radiation effects on the blood cells. This model is...
Background: Mesenchymal stem cells (MSCs) are multipotent cells able to differentiating into a variety of mesenchymal tissues including osteoblasts, adipocytes and several other tissues. Objectives: Differentiation of MSCs into fibroblast cells in vitro is an attractive strategy to achieve fibroblast cell and use them for purposes such as regeneration medicine. The goal of this s...
Since human beings could travel beyond the earth atmosphere, scientists started to investigate the effect of microgravity on human cells. Microgravity has different effects on normal and cancer cells, but the related mechanisms are not well-known till now. The aim of the present review is to focus on the consequences of exposing the cancer cells to reduced gravity. Some cancer cells organize th...
Introduction: VCAM-1 and Tie1 are endothelial molecule and receptor, respectively that may participate in atherosclerosis disease. Endothelial cells are very sensitive to mechanical forces, including microgravity and the morphological and functional changes in this condition. To examine the effect of gravity on atherosclerosis disease, we analyzed the expression of VCAM-1 and Tie1 genes in micr...
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