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Phénomènes génétiques
Variation génétique
Mutation
Aberrations des chromosomes
Aberrations des chromosomes : Questions médicales fréquentes
Termes MeSH sélectionnés :
Weightlessness Simulation
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{
"@type": "Question",
"name": "Quels sont les facteurs de risque d'aberrations chromosomiques ?",
"position": 26,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les facteurs incluent l'âge maternel avancé, des antécédents familiaux et des expositions environnementales."
}
},
{
"@type": "Question",
"name": "L'exposition à des substances toxiques augmente-t-elle le risque ?",
"position": 27,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, l'exposition à des substances toxiques peut augmenter le risque d'anomalies chromosomiques."
}
},
{
"@type": "Question",
"name": "Les antécédents familiaux jouent-ils un rôle ?",
"position": 28,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, des antécédents familiaux d'anomalies chromosomiques augmentent le risque."
}
},
{
"@type": "Question",
"name": "Le stress peut-il influencer le risque d'anomalies ?",
"position": 29,
"acceptedAnswer": {
"@type": "Answer",
"text": "Certaines études suggèrent que le stress peut avoir un impact sur le risque d'anomalies chromosomiques."
}
},
{
"@type": "Question",
"name": "Les infections pendant la grossesse sont-elles un facteur de risque ?",
"position": 30,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, certaines infections pendant la grossesse peuvent augmenter le risque d'anomalies chromosomiques."
}
}
]
}
]
}
The immune system is an intricate network of cellular components that safeguards against pathogens and aberrant cells, with CD4+ T cells playing a central role in this process. Human space travel pres...
CD4+ T cells were obtained from healthy individuals and subjected to Fe ion particle radiation, Photon irradiation, simulated microgravity, and hydrocortisone, either individually or in different comb...
Simulated microgravity exposure resulted in an apparent Th1 to Th2 shift, evidenced on the level of cytokine secretion as well as altered gene expression. RNA sequencing analysis showed that several g...
The research findings underscore the substantial influence of the space exposome on immune function, particularly in the regulation of T cell responses. Future work should focus expanding the limited ...
The effects of simulated space stressors on CD4+ T cell function are substantial, implying that space travel poses a potential threat to immune health. Additional research is necessary to investigate ...
Microgravity changes the gene expression pattern in various cell types. This study focuses on the breast cancer cell lines MCF-7 (less invasive) and MDA-MB-231 (triple-negative, highly invasive). The ...
Astronauts in microgravity experience multi-system deconditioning, impacting their inflight efficiency and inducing dysfunctions upon return to Earth gravity. To fill the sex gap of knowledge in the h...
Breast cancer is the leading cause of cancer incidence worldwide and among the five leading causes of cancer mortality. Despite major improvements in early detection and new treatment approaches, the ...
Microgravity-induced bone loss is a major concern for space travelers. Ground-based microgravity simulators are crucial to study the effect of microgravity exposure on biological systems and to addres...
Exposure to microgravity during spaceflight induces the alterations in endothelial cell function associated with post-flight cardiovascular deconditioning. PIEZO1 is a major mechanosensitive ion chann...
The senses of limb position and movement become degraded in low gravity. One explanation is a gravity-dependent loss of fusimotor activity. In low gravity, position and movement sense accuracy can be ...
The exact pathophysiology of the spaceflight-associated neuro-ocular syndrome (SANS) has so far not been completely elucidated. In this study we assessed the effect of acute head-down tilt position on...
The circadian clock extensively regulates physiology and behavior. In space, astronauts encounter many environmental factors that are dramatically different from those on Earth; however, the effects o...
Weightlessness increases both bone loss and kidney stone formation risk. The large interior volume of the International Space Station (ISS) has allowed for a mix of exercise devices to help maintain t...
Simple, low-mass, low-power ways to track bone loss and kidney stone risk in space are being researched. Tracking urinary calcium concentration in the first morning void and targeting additional count...
New exploration spacecraft would not have the room and capability to replicate the current 2 h, daily exercise countermeasure programme on the ISS. A monitoring approach, perhaps using urinary calcium...