Expression and Regulation of Aquaporins 1, 8, and 9 in the Testis, Efferent Ducts, and Epididymis of Adult Rats and During Postnatal Development
Pourquoi ce travail est dans la base
Une base qui oublie comment elle a trouvé un travail ne peut pas être vérifiée. Voici les voies qui ont admis celui-ci.
Notice bibliographique
Résumé
Aquaporins (AQPs) are membrane protein channels that allow the rapid passage of water through an epithelium containing tight junctions. In the present study, light microscope immunocytochemistry was utilized to localize several members of the AQP family in the testis, efferent ducts, and epididymis of normal adult animals during postnatal development and after various experimental procedures on adult animals. In the testis of normal adult animals, AQP-8 was expressed exclusively in Sertoli cells, while AQP-9 outlined Leydig cells. In the efferent ducts, AQP-1 was expressed on the microvilli, basolateral plasma membranes, and apical endosomes of the nonciliated cells and cilia of ciliated cells, while AQP-9 was present only on the microvilli of nonciliated cells. In the epididymis, AQP-9 was localized to the microvilli of the principal cells of all regions, with the most intense reaction being noted in the initial segment and cauda regions. The clear cells of the cauda region expressed only AQP-9. AQP-1 was not expressed in the testis or the epididymal epithelium, but it was expressed over the endothelial cells of the vascular channels of the efferent ducts and epididymis. After efferent duct ligation or orchidectomy, there was no change in the expression of AQP-1 or -9 over the microvilli or cilia of epithelial cells in the case of the efferent ducts, suggesting that testicular factors do not regulate their expression in this region. In contrast, AQP-9 expression in the principal cells of the initial segment, but not of other regions, and also in the clear cells of the cauda region was dramatically reduced after both treatments. As the expression was not restored to control levels by testosterone replacement, the data suggest that a luminal factor(s) derived from the testis regulates AQP-9 expression in the principal cells of the initial segment and in the clear cells of the cauda region. Postnatal studies revealed that the expression of AQP-1 and -9 in the different cell types of the efferent ducts and epididymis occurred between days 7 and 29, eliminating sperm and high androgen levels as possible regulating factors. Taken together, these data suggest cell specificity with respect to the expression of AQP-8 and -9 in the testis. In the efferent ducts and epididymis, specificity exists in cell, region, and tissue distribution with respect to the expression of AQP-1 and -9, and their expression does not appear to be regulated by androgens.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découle