- ICH GCP
- Registre américain des essais cliniques
- Essai clinique NCT01921400
The Pathogenesis of Hepatitis C Virus Vertical Transmission
To evaluate for the presence of HCV Core protein, HCV RNA and SPP in the placenta and fetal membranes using paraffin-embedded sections and post-delivery specimens respectively. In parallel, we will assess placental tissue for evidence of HCV infection using a novel in situ hybridization technique and translate our in vitro findings to these in vivo samples.
Our overall hypothesis is that cytotrophoblasts at the maternal-fetal interface within the placenta serve as a "barrier" that must be crossed during vertical transmission and that cytotrophoblasts are permissive to HCV at a low level that may be enhanced under certain conditions. By comparing the regulation of key steps in the intracellular life cycle of HCV in cytotrophoblasts to highly permissive hepatocytes, significant differences in HCV regulation should be revealed.
Based on our preliminary data, our working hypothesis is that HCV Core protein is differentially processed in cytotrophoblasts compared to hepatocytes.
Aperçu de l'étude
Statut
Les conditions
Type d'étude
Inscription (Réel)
Contacts et emplacements
Lieux d'étude
-
-
-
Giza, Egypte
- Cairo University
-
-
-
-
North Carolina
-
Chapel Hill, North Carolina, États-Unis, 27514
- University of North Carolina at Chapel Hill
-
-
Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
- Enfant
- Adulte
- Adulte plus âgé
Accepte les volontaires sains
Sexes éligibles pour l'étude
Méthode d'échantillonnage
Population étudiée
La description
Inclusion Criteria:
- Pregnant women with HCV infection
- Pregnant women without HCV infection
Exclusion Criteria:
- None
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
Cohortes et interventions
Groupe / Cohorte |
|---|
|
HCV-infected mothers
in situ hybridization
|
|
Uninfected mothers
in situ hybridization
|
Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
To evaluate for the presence of HCV Core protein, HCV RNA and SPP in the placenta and fetal membranes using paraffin-embedded sections and post-delivery specimens respectively.
Délai: 1 year
|
We will begin by examining paraffin-embedded sections from HCV-infected mothers who had the placentas sent to pathology for analysis.We will perform a combination of immunohistochemistry (IHC) and immunofluorescence (IF) to analyze the level of SPP expression in the trophoblast cell layer, as well as if HCV Core protein expression was detectable in this layer or in any cell type within the placental section. We would also plan to identify other patient-derived tissues that were not paraffin embedded, both from uninfected patients and infected patients to validate different parts of our preliminary data. We would plan to use dissected fetal membranes, which contain both chorion and amnion, to investigate the level of SPP expression in these tissues. |
1 year
|
Collaborateurs et enquêteurs
Les enquêteurs
- Chercheur principal: Ravi Jhaveri, M.D., UNC Department of Pediatrics: Division of Allergy, Immunology, Rheumatology and Infectious Diseases
Publications et liens utiles
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude
Achèvement primaire (Réel)
Achèvement de l'étude (Réel)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Estimation)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Réel)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Termes MeSH pertinents supplémentaires
Autres numéros d'identification d'étude
- 13-0958
Ces informations ont été extraites directement du site Web clinicaltrials.gov sans aucune modification. Si vous avez des demandes de modification, de suppression ou de mise à jour des détails de votre étude, veuillez contacter register@clinicaltrials.gov. Dès qu'un changement est mis en œuvre sur clinicaltrials.gov, il sera également mis à jour automatiquement sur notre site Web .