questionsmedicales.fr
Phénomènes biologiques
Évolution biologique
Dérive génétique
Dérive génétique : Questions médicales fréquentes
Termes MeSH sélectionnés :
Diagnostic
5
Dérive génétique
Génétique des populations
Séquençage génétique
Marqueurs génétiques
Diversité génétique
Indices de diversité
Bioinformatique
Analyse génétique
Génétique des populations
Isolement génétique
Symptômes
5
Santé des populations
Évolution
Maladies génétiques
Épidémiologie
Traits génétiques
Évolution
Fertilité
Diversité génétique
Populations isolées
Traits spécifiques
Prévention
5
Prévention
Diversité génétique
Réserves naturelles
Biodiversité
Élevage sélectif
Diversité génétique
Programmes de conservation
Biodiversité
Migration
Génétique des populations
Traitements
5
Conservation
Diversité génétique
Reproduction contrôlée
Gestion de la biodiversité
Thérapie génique
Maladies génétiques
Sélection naturelle
Fréquences alléliques
Complications
5
Complications
Maladies héréditaires
Extinction
Diversité génétique
Populations en danger
Vulnérabilité
Adaptation
Changements environnementaux
Santé publique
Prévalence des maladies
Facteurs de risque
5
Taille de population
Isolement géographique
Événements fondateurs
Diversité génétique
Changement climatique
Isolement
Agriculture intensive
Diversité génétique
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"name": "La dérive génétique affecte-t-elle la fertilité ?",
"position": 9,
"acceptedAnswer": {
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"name": "Les populations isolées montrent-elles des symptômes ?",
"position": 10,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, elles peuvent présenter des traits spécifiques dus à la dérive génétique."
}
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{
"@type": "Question",
"name": "Comment prévenir la dérive génétique ?",
"position": 11,
"acceptedAnswer": {
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"text": "Favoriser la diversité génétique par des échanges entre populations peut aider."
}
},
{
"@type": "Question",
"name": "Les réserves naturelles aident-elles ?",
"position": 12,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, elles préservent la diversité génétique et limitent la dérive dans les populations."
}
},
{
"@type": "Question",
"name": "L'élevage sélectif est-il efficace ?",
"position": 13,
"acceptedAnswer": {
"@type": "Answer",
"text": "L'élevage sélectif peut réduire les effets de la dérive en maintenant la diversité."
}
},
{
"@type": "Question",
"name": "Les programmes de conservation sont-ils utiles ?",
"position": 14,
"acceptedAnswer": {
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"text": "Oui, ils aident à maintenir la diversité génétique et à prévenir la dérive."
}
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{
"@type": "Question",
"name": "La migration des espèces aide-t-elle ?",
"position": 15,
"acceptedAnswer": {
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"text": "Oui, la migration peut introduire de nouveaux gènes et réduire la dérive."
}
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{
"@type": "Question",
"name": "Y a-t-il des traitements pour la dérive génétique ?",
"position": 16,
"acceptedAnswer": {
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"text": "Il n'existe pas de traitements, car c'est un processus évolutif naturel."
}
},
{
"@type": "Question",
"name": "Comment gérer les effets de la dérive génétique ?",
"position": 17,
"acceptedAnswer": {
"@type": "Answer",
"text": "La gestion passe par la conservation de la diversité génétique dans les populations."
}
},
{
"@type": "Question",
"name": "Peut-on prévenir la dérive génétique ?",
"position": 18,
"acceptedAnswer": {
"@type": "Answer",
"text": "On peut réduire ses effets par des programmes de reproduction contrôlée."
}
},
{
"@type": "Question",
"name": "Les thérapies géniques aident-elles ?",
"position": 19,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les thérapies géniques ne ciblent pas la dérive génétique, mais des maladies spécifiques."
}
},
{
"@type": "Question",
"name": "La sélection naturelle peut-elle contrer la dérive ?",
"position": 20,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, la sélection naturelle peut influencer les fréquences alléliques et contrer la dérive."
}
},
{
"@type": "Question",
"name": "Quelles complications peuvent survenir ?",
"position": 21,
"acceptedAnswer": {
"@type": "Answer",
"text": "La dérive peut entraîner une perte de diversité génétique et des maladies héréditaires."
}
},
{
"@type": "Question",
"name": "La dérive génétique augmente-t-elle le risque d'extinction ?",
"position": 22,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, elle peut accroître le risque d'extinction des populations en réduisant la diversité."
}
},
{
"@type": "Question",
"name": "Les populations en danger sont-elles plus affectées ?",
"position": 23,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, les populations en danger sont plus vulnérables à la dérive génétique."
}
},
{
"@type": "Question",
"name": "La dérive peut-elle affecter l'adaptation ?",
"position": 24,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, elle peut limiter l'adaptation des populations aux changements environnementaux."
}
},
{
"@type": "Question",
"name": "Y a-t-il des effets sur la santé publique ?",
"position": 25,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, la dérive peut influencer la prévalence de certaines maladies dans les populations."
}
},
{
"@type": "Question",
"name": "Quels facteurs augmentent la dérive génétique ?",
"position": 26,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les petites tailles de population et l'isolement géographique augmentent le risque."
}
},
{
"@type": "Question",
"name": "Les événements fondateurs influencent-ils ?",
"position": 27,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, les événements fondateurs peuvent réduire la diversité génétique et favoriser la dérive."
}
},
{
"@type": "Question",
"name": "Le changement climatique est-il un facteur ?",
"position": 28,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, il peut isoler des populations et augmenter la dérive génétique."
}
},
{
"@type": "Question",
"name": "Les maladies peuvent-elles influencer la dérive ?",
"position": 29,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, les épidémies peuvent réduire la taille de la population et favoriser la dérive."
}
},
{
"@type": "Question",
"name": "Les pratiques agricoles affectent-elles la dérive ?",
"position": 30,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, l'agriculture intensive peut réduire la diversité génétique et favoriser la dérive."
}
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Expert en Médecine, Optimisation des Parcours de Soins et Révision Médicale
Validation scientifique effectuée le 26/03/2025
Contenu vérifié selon les dernières recommandations médicales
3 publications dans cette catégorie
Affiliations :
Department of Biology, Emory University, Atlanta, GA, 30322.
Emory Center of Excellence for Influenza Research and Response (Emory-CEIRR).
Publications dans "Dérive génétique" :
2 publications dans cette catégorie
Affiliations :
Center for Infectious Disease Dynamics, Department of Biology, Pennsylvania State University, University Park, PA 16802, USA.
Publications dans "Dérive génétique" :
2 publications dans cette catégorie
Affiliations :
Center for Infectious Disease Dynamics, Department of Biology, Pennsylvania State University, University Park, PA 16802, USA.
Publications dans "Dérive génétique" :
2 publications dans cette catégorie
Affiliations :
Center for Infectious Disease Dynamics, Department of Biology, Pennsylvania State University, University Park, PA 16802, USA.
Publications dans "Dérive génétique" :
2 publications dans cette catégorie
Affiliations :
Center for Infectious Disease Dynamics, Department of Biology, Pennsylvania State University, University Park, PA 16802, USA.
Publications dans "Dérive génétique" :
2 publications dans cette catégorie
Affiliations :
Center for Infectious Disease Dynamics, Department of Biology, Pennsylvania State University, University Park, PA 16802, USA.
Publications dans "Dérive génétique" :
2 publications dans cette catégorie
Affiliations :
Institut de Recherche en Sciences de la Santé, Direction Régionale de l'Ouest, Bobo Dioulasso, Burkina Faso.
Publications dans "Dérive génétique" :
2 publications dans cette catégorie
Affiliations :
Center for Infectious Disease Dynamics, Department of Biology, Pennsylvania State University, University Park, PA 16802, USA.
Nuffield Department of Medicine, University of Oxford, Oxford, UK.
Publications dans "Dérive génétique" :
2 publications dans cette catégorie
Affiliations :
Laboratoire de Biometrie et Biologie Evolutive, CNRS, Universite Lyon 1, Villeurbanne, France.
Publications dans "Dérive génétique" :
2 publications dans cette catégorie
Affiliations :
Laboratoire de Biometrie et Biologie Evolutive, CNRS, Universite Lyon 1, Villeurbanne, France.
Publications dans "Dérive génétique" :
2 publications dans cette catégorie
Affiliations :
Laboratoire de Biometrie et Biologie Evolutive, CNRS, Universite Lyon 1, Villeurbanne, France.
Publications dans "Dérive génétique" :
2 publications dans cette catégorie
Affiliations :
Departments of Physics and Integrative Biology, University of California, Berkeley, CA, 94720, USA.
Publications dans "Dérive génétique" :
2 publications dans cette catégorie
Affiliations :
Center for Population Biology, University of California, Davis, CA 95616.
Department of Evolution and Ecology, University of California, Davis, CA 95616.
Publications dans "Dérive génétique" :
2 publications dans cette catégorie
Affiliations :
Center for Population Biology, University of California, Davis, CA 95616.
Department of Evolution and Ecology, University of California, Davis, CA 95616.
Publications dans "Dérive génétique" :
2 publications dans cette catégorie
Affiliations :
Department of Microbiology and Immunology, Emory University, Atlanta, GA, 30322.
Department of Biology, Emory University, Atlanta, GA, 30322.
Publications dans "Dérive génétique" :
2 publications dans cette catégorie
Affiliations :
Department of Veterinary Preventive Medicine, The Ohio State University, Columbus, OH 43210.
Publications dans "Dérive génétique" :
2 publications dans cette catégorie
Affiliations :
Influenza Division, Centers for Disease Control and Prevention, Atlanta, GA.
Publications dans "Dérive génétique" :
2 publications dans cette catégorie
Affiliations :
Influenza Division, Centers for Disease Control and Prevention, Atlanta, GA.
Publications dans "Dérive génétique" :
2 publications dans cette catégorie
Affiliations :
Department of Biostatistics and Bioinformatics, Rollins School of Public Health, Emory University, Atlanta, GA, 30322.
Publications dans "Dérive génétique" :
2 publications dans cette catégorie
Affiliations :
Influenza Division, Centers for Disease Control and Prevention, Atlanta, GA.
Publications dans "Dérive génétique" :
This Position Statement on root resorption represents the consensus of an expert committee convened by the European Society of Endodontology (ESE). The statement is based on current clinical and scien...
The current literature on multiple idiopathic cervical root resorption (MICRR), a rare and aggressive form of external root resorption, is limited to case reports and series. Therefore, we performed a...
This study aimed to understand the influence of periodontal fibroblasts (PDLFs) on clastic differentiation of macrophages (Mφ) in different resorptive environments....
PDLF-Mφ direct coculture (juxtacrine) was seeded on dentin, cementum, and polystyrene with/without lipopolysaccharide, macrophage colony-stimulating factor, and receptor activator of nuclear factor ka...
PDLF-Mφ coculture showed a higher number of TRAP-positive multinucleated cells than Mφ monoculture on dentin and polystyrene. No TRAP-positive multinucleated cells were observed in paracrine and cemen...
The study highlights the juxtacrine effect of PDLFs on the clastic differentiation of Mφ with a difference in clastic activity between dentin and cementum. The study also emphasizes the temporal effec...
The literature reports the association of external root resorption (ERR) with orthodontic movement. In cases of premolars extractions, orthodontic movement of anterior teeth is usually quite expressiv...
The aim of this study was to assess the root morphology of maxillary canines and incisors in patients submitted to four premolar extraction and orthodontic retraction of the anterior teeth, by means o...
The sample consisted of six adult patients, five female and one male, with a mean age of 23.5 ± 6.5 years, who underwent orthodontic treatment. All patients presented bimaxillary dental protrusion, wi...
All average differences were close to zero and, even when evaluating the extreme values, the observed changes were always smaller than the accuracy of the CBCT....
A mild resorption trend was observed, although it was not clinically significant, with values lower than the tomography accuracy....
External inflammatory root resorption (EIRR) and external replacement root resorption (ERRR) are the most common adverse outcomes after luxation injuries or dental injuries. They are usually detected ...
An a priori protocol was prepared by a multidisciplinary expert group, as per the Cochrane handbook and PRISMA guidelines. The systematic search was conducted in six databases and grey-literature sour...
Eight studies were included in the systematic review and could be categorized as per the source of biomarkers, namely epithelial cells from mucosa, gingival crevicular fluid and extracted teeth. The s...
Among the three sources, the inflammatory gingival crevicular fluid appeared to be the most non-invasive source of biomarkers for predicting trauma-induced root resorption, although the evidence about...
Class II malocclusion treatment efficiency with maxillary premolar extractions has been reported. However, no study evaluated the root resorption associated with this protocol. Therefore, this study a...
The sample consisted of 56 patients with complete Class II malocclusion, divided into 2 groups. Group 1 comprised 28 patients (10 female, 18 male) treated with maxillary first premolar extractions, an...
Overjet, overbite, inclination, vertical positional changes, and vertical and horizontal apical displacements of maxillary incisors were similar between groups. There was no statistically significant ...
Treating complete Class II malocclusion with 2 maxillary premolar extractions resulted in a similar root resorption as treating without maxillary premolar extractions. An individualized evaluation of ...
External apical root resorption (EARR) is a common undesirable outcome of orthodontic treatment, this study aimed to identify genetic polymorphisms associated with the susceptibility to extreme orthod...
Genomic DNA was isolated from the saliva of 77 patients who underwent orthodontic treatment involving two maxillary premolar extractions. The patients were divided into two groups based on EARR values...
SNPs related to genes TNFSF11, TNFRSF11B, WNT3A, SFRP2, LRP6, P2RX7, and LRP1 were found to be significantly associated with severe EARR (p < 0.05, pre-Bonferroni correction p-values). Additionally, t...
Extreme phenotype analysis has identified eleven SNPs related to genes TNFSF11, TNFRSF11B, WNT3A, SFRP2, LRP6, P2RX7, and LRP1 that are associated with severe root resorption in the Korean population....
The aim of this study was to estimate the prevalence and severity of external root resorption (RR) caused by retained third molars (M3), to compare the sensitivity of panoramic radiography (PAN) and c...
In a retrospective cross-sectional analysis, we included patients (N = 367) who underwent PAN and CBCT imaging between December 2017 and July 2019. Previous orthodontic treatment, age, gender, superim...
While less than 5% of PANs suggested RR associated with M3, CBCT showed RR in 20% of all M2 with adjacent retained M3. The angle of inclination of M3, patient age and vertical level of molar contact e...
Within the limitations of our study, these data confirm the poor performance of PAN in the diagnosis of RR. CBCT may be helpful in detecting RR in mesioangulated and deeply retained M3 in elderly pati...
Our study may help to decide whether CBCT should be considered prior to M3 surgery....
This study aimed to analyze the scientific production of genetic polymorphisms and external apical root resorption (EARR) to establish main findings, geographic trends, and research gaps for possible ...
Unrestricted publications were searched using the Scopus database (March 2023) to include studies that addressed the association between genetic polymorphisms and EARR. Case-control, cohort, cross-sec...
Of the 44 studies analyzed, "Iglesias-Linares A" was the most cited author. The University of Seville (Spain) conducted the most research on this topic. Brazil, Spain, and the USA were the leading cou...
Endodontics is an area of research that should focus more on root resorption and genetic polymorphisms, as it still underexplored, compared to orthodontics. Polymorphisms have been studied as possible...
External root resorption (ERR) has a multifactorial etiology and is difficult to diagnose, which means that is continues to be of research interest. This work mainly aims to determine whether external...
The Checklist for Reporting In-vitro Studies (CRIS) guidelines were followed throughout this study. This experiment highlights the preparation and generation of standardized synthetic teeth measured o...
ICC values for intra- and inter-examiner agreement were appropriate. DPR overestimated ERR detection compared to the actual and CBCT measurements [Mean diff = 0.765 and 0.768, respectively]. CBCT diag...
The results of this study highlight that both CBCT and DPR are good diagnostic methods for ERR. Nevertheless, root canal filling material influences diagnostic capability in ERR. The clinical signific...