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Phénomènes génétiques
Structures génétiques
Structures de chromosome
Chromatides
Chromatides : Questions médicales fréquentes
Termes MeSH sélectionnés :
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"description": "Comment identifier les chromatides lors de la mitose ?\nQuels tests révèlent des anomalies des chromatides ?\nLes chromatides peuvent-elles être analysées par PCR ?\nQuel rôle joue l'immunofluorescence dans l'étude des chromatides ?\nPeut-on observer les chromatides en microscopie électronique ?",
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"@type": "Question",
"name": "Comment identifier les chromatides lors de la mitose ?",
"position": 1,
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"text": "Les chromatides sont visibles sous un microscope lors de la métaphase de la mitose."
}
},
{
"@type": "Question",
"name": "Quels tests révèlent des anomalies des chromatides ?",
"position": 2,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les analyses cytogénétiques, comme le caryotype, peuvent détecter des anomalies."
}
},
{
"@type": "Question",
"name": "Les chromatides peuvent-elles être analysées par PCR ?",
"position": 3,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, la PCR peut être utilisée pour analyser des segments spécifiques des chromatides."
}
},
{
"@type": "Question",
"name": "Quel rôle joue l'immunofluorescence dans l'étude des chromatides ?",
"position": 4,
"acceptedAnswer": {
"@type": "Answer",
"text": "L'immunofluorescence permet de visualiser des protéines spécifiques sur les chromatides."
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{
"@type": "Question",
"name": "Peut-on observer les chromatides en microscopie électronique ?",
"position": 5,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, la microscopie électronique offre une résolution élevée pour observer les chromatides."
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{
"@type": "Question",
"name": "Quels symptômes indiquent des anomalies chromosomiques ?",
"position": 6,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des anomalies chromosomiques peuvent entraîner des malformations congénitales ou des troubles du développement."
}
},
{
"@type": "Question",
"name": "Les anomalies des chromatides causent-elles des maladies ?",
"position": 7,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, des anomalies peuvent être liées à des maladies comme le syndrome de Down."
}
},
{
"@type": "Question",
"name": "Comment les anomalies des chromatides affectent-elles la santé ?",
"position": 8,
"acceptedAnswer": {
"@type": "Answer",
"text": "Elles peuvent entraîner des cancers ou des troubles génétiques héréditaires."
}
},
{
"@type": "Question",
"name": "Les symptômes des troubles chromosomiques sont-ils visibles à la naissance ?",
"position": 9,
"acceptedAnswer": {
"@type": "Answer",
"text": "Certains symptômes peuvent être visibles à la naissance, comme des traits faciaux caractéristiques."
}
},
{
"@type": "Question",
"name": "Les troubles des chromatides peuvent-ils affecter la fertilité ?",
"position": 10,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, des anomalies chromosomiques peuvent entraîner des problèmes de fertilité."
}
},
{
"@type": "Question",
"name": "Peut-on prévenir les anomalies chromosomiques ?",
"position": 11,
"acceptedAnswer": {
"@type": "Answer",
"text": "Certaines anomalies peuvent être évitées par des conseils génétiques et un suivi prénatal."
}
},
{
"@type": "Question",
"name": "Quel rôle joue l'alimentation dans la prévention des anomalies chromosomiques ?",
"position": 12,
"acceptedAnswer": {
"@type": "Answer",
"text": "Une alimentation équilibrée et riche en acide folique peut réduire le risque d'anomalies."
}
},
{
"@type": "Question",
"name": "Les tests génétiques peuvent-ils aider à prévenir des anomalies ?",
"position": 13,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, les tests génétiques permettent d'identifier les risques d'anomalies chromosomiques."
}
},
{
"@type": "Question",
"name": "La vaccination peut-elle prévenir des anomalies chromosomiques ?",
"position": 14,
"acceptedAnswer": {
"@type": "Answer",
"text": "Certaines vaccinations peuvent prévenir des infections qui pourraient affecter le développement fœtal."
}
},
{
"@type": "Question",
"name": "Le suivi médical régulier aide-t-il à prévenir les anomalies chromosomiques ?",
"position": 15,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, un suivi médical régulier peut aider à détecter et gérer les risques d'anomalies."
}
},
{
"@type": "Question",
"name": "Quels traitements existent pour les anomalies chromosomiques ?",
"position": 16,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les traitements varient selon la condition, incluant thérapies géniques et interventions chirurgicales."
}
},
{
"@type": "Question",
"name": "La chimiothérapie est-elle utilisée pour traiter des anomalies des chromatides ?",
"position": 17,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, la chimiothérapie peut être utilisée pour traiter certains cancers liés à des anomalies chromosomiques."
}
},
{
"@type": "Question",
"name": "Les traitements sont-ils disponibles pour le syndrome de Turner ?",
"position": 18,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, des traitements hormonaux et des interventions médicales peuvent aider les patients."
}
},
{
"@type": "Question",
"name": "Peut-on corriger les anomalies chromosomiques par chirurgie ?",
"position": 19,
"acceptedAnswer": {
"@type": "Answer",
"text": "Certaines anomalies peuvent être corrigées par chirurgie, selon leur nature et gravité."
}
},
{
"@type": "Question",
"name": "Les thérapies géniques sont-elles efficaces contre les anomalies chromosomiques ?",
"position": 20,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les thérapies géniques montrent un potentiel prometteur pour certaines anomalies chromosomiques."
}
},
{
"@type": "Question",
"name": "Quelles complications peuvent résulter d'anomalies chromosomiques ?",
"position": 21,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les complications incluent des troubles du développement, des malformations et des cancers."
}
},
{
"@type": "Question",
"name": "Les anomalies des chromatides peuvent-elles entraîner des complications à long terme ?",
"position": 22,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, elles peuvent causer des complications chroniques et affecter la qualité de vie."
}
},
{
"@type": "Question",
"name": "Comment les anomalies chromosomiques affectent-elles la santé mentale ?",
"position": 23,
"acceptedAnswer": {
"@type": "Answer",
"text": "Elles peuvent entraîner des troubles mentaux ou des difficultés d'adaptation sociale."
}
},
{
"@type": "Question",
"name": "Les complications des anomalies chromosomiques sont-elles réversibles ?",
"position": 24,
"acceptedAnswer": {
"@type": "Answer",
"text": "Certaines complications peuvent être gérées, mais beaucoup ne sont pas réversibles."
}
},
{
"@type": "Question",
"name": "Les anomalies chromosomiques augmentent-elles le risque de maladies auto-immunes ?",
"position": 25,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, certaines anomalies chromosomiques peuvent être associées à un risque accru de maladies auto-immunes."
}
},
{
"@type": "Question",
"name": "Quels facteurs augmentent le risque d'anomalies chromosomiques ?",
"position": 26,
"acceptedAnswer": {
"@type": "Answer",
"text": "L'âge maternel avancé, des antécédents familiaux et certaines expositions environnementales."
}
},
{
"@type": "Question",
"name": "Les infections pendant la grossesse augmentent-elles les risques chromosomiques ?",
"position": 27,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, certaines infections comme la rubéole peuvent augmenter le risque d'anomalies chromosomiques."
}
},
{
"@type": "Question",
"name": "L'exposition aux radiations influence-t-elle les anomalies chromosomiques ?",
"position": 28,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, l'exposition aux radiations peut augmenter le risque d'anomalies chromosomiques."
}
},
{
"@type": "Question",
"name": "Le tabagisme maternel est-il un facteur de risque ?",
"position": 29,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, le tabagisme pendant la grossesse est associé à un risque accru d'anomalies chromosomiques."
}
},
{
"@type": "Question",
"name": "Les facteurs génétiques jouent-ils un rôle dans les anomalies chromosomiques ?",
"position": 30,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, des mutations génétiques héréditaires peuvent augmenter le risque d'anomalies chromosomiques."
}
}
]
}
]
}
To ascertain whether adverse pregnancy outcomes at first pregnancy influence subsequent interpregnancy intervals (IPIs) and whether the size of this effect varies with IPI distribution METHODS: We inc...
The average IPI was 26.6 mo. It was 0.56 mo (95% CI: 0.25-0.88 mo) and 1.12 mo (95% CI: 0.56 - 1.68 mo) longer after preeclampsia, and gestational hypertension respectively. There was insufficient evi...
Mothers with preeclampsia and gestational hypertension had slightly longer subsequent IPIs than mothers whose pregnancies were not complicated by these conditions. However, the extent of the delay was...
Burnout among surgeons is increasingly recognized as a crisis. However, little is known about changes in burnout prevalence over time. We evaluated temporal trends in burnout among surgeons and surgic...
We systematically reviewed MEDLINE, Embase, and PsycINFO for studies assessing surgeon burnout from January 1981 through September 2021. Changes in dichotomized Maslach Burnout Inventory scores and me...
Of 3,575 studies screened, 103 studies representing 63,587 individuals met inclusion criteria. Publication dates ranged from 1996 through 2021. Overall, 41% of surgeons met criteria for burnout. Train...
Contrary to popular perceptions, we found no evidence of rising surgeon burnout in published literature. Rather, emotional exhaustion and depersonalization may be decreasing. Nonetheless, burnout leve...
The Cancer Incidence in Five Continents Time Trends, Nordic Cancer Registries, Surveillance, Epidemiology and End Results, WHO Mortality databases were assessed to extract the Age-Standardised Rates (...
In 2020, the highest incidence of childhood cancer was found in countries with higher Human Development Index (HDI) (ASR = 15.7), yet the highest mortality was found in countries with lower HDIs (ASR ...
The largest mortality and mortality to incidence ratio of childhood cancer were found in low-income countries. There was a substantial increasing trend of childhood cancer incidence, while overall its...
Suicide by firearm is a major public health problem in many countries. But, studies that investigated the mortality of suicide by firearm on a global scale are still limited. The aim of this study was...
Mortality data of suicide by firearm was presented using the age-standardized rates (ASRs, expressed per 100,000). Joinpoint regression analysis was used to assess trends of mortality of suicide by fi...
A total of 52,694 (45,110 male and 7584 female) deaths of suicide by firearm were reported worldwide in 2019. The global ASR of suicide by firearm was six-fold higher in males than in females (1.15 pe...
Decreasing trends in mortality of suicide by firearm were observed in majority of countries across the world, but not in all. Future research should determine more effective ways to further reduce mor...
This paper evaluates linear and nonlinear regression analysis to describe the empirical adsorption kinetics using pseudo-first-order (PFO) and pseudo-second-order (PSO) models. These models have been ...
Narcolepsy is a chronic neurological disorder. The diagnostic criteria of narcolepsy evolve from clinical symptoms to molecular biomarkers, along with the understanding of its clinical nature and path...
We searched 5 databases for observational studies on the incidence or prevalence of narcolepsy published before October 14, 2021. Subgroup analyses and meta-regression were used to assess the impact o...
Thirty-five studies were selected from 2,833 articles. The estimates of incidence and prevalence were wide-ranging with high heterogeneity (incidence I2 = 99.8%; prevalence I2 = 99.7%), from 0.06 to 6...
Estimates of incidence/prevalence of narcolepsy could not be pooled reliably with substantial heterogeneity. Incidence/prevalence studies using ICSD and Brighton provided lower estimates than studies ...
The incubation period is a key characteristic of an infectious disease. In the outbreak of a novel infectious disease, accurate evaluation of the incubation period distribution is critical for designi...
Many studies have reported declines in semen quality mainly focused on total sperm counts (TSC) and sperm concentration (SC), ignoring the importance of progressive motile sperm (PR), total motile spe...
We searched 3 English databases and 4 Chinese databases from January 1980 to August 2022. Random-effect meta-analyses and weighted linear regression models were conducted to perform the trend in semen...
Finally, 162 eligible studies including 264,665 men from 28 countries were got between 1978 and 2021. Significant decreases were observed in TSC (- 3.06 million/year, 95% CI - 3.28 to - 2.84), SC (- 0...
Downward trends in semen quality among global young men were observed in our study, including TSC, SC, and PR. But TM did not appear to be trending down or even to be leveling off. More studies are ne...
Although leptospirosis is endemic in most Brazilian regions, South Brazil shows the highest morbidity and mortality rates in the country. The present study aimed to analyze the spatial and temporal dy...
Despite recent developments, it is hard to profile all multi-omics single-cell data modalities on the same cell. Thus, huge amounts of single-cell genomics data of unpaired observations on different c...