- ICH GCP
- US Clinical Trials Registry
- Klinisk forsøg 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.
Studieoversigt
Status
Betingelser
Undersøgelsestype
Tilmelding (Faktiske)
Kontakter og lokationer
Studiesteder
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Giza, Egypten
- Cairo University
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North Carolina
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Chapel Hill, North Carolina, Forenede Stater, 27514
- University of North Carolina at Chapel Hill
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Deltagelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
- Barn
- Voksen
- Ældre voksen
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Prøveudtagningsmetode
Studiebefolkning
Beskrivelse
Inclusion Criteria:
- Pregnant women with HCV infection
- Pregnant women without HCV infection
Exclusion Criteria:
- None
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
Kohorter og interventioner
Gruppe / kohorte |
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HCV-infected mothers
in situ hybridization
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Uninfected mothers
in situ hybridization
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Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
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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.
Tidsramme: 1 year
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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
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Samarbejdspartnere og efterforskere
Efterforskere
- Ledende efterforsker: Ravi Jhaveri, M.D., UNC Department of Pediatrics: Division of Allergy, Immunology, Rheumatology and Infectious Diseases
Publikationer og nyttige links
Datoer for undersøgelser
Studer store datoer
Studiestart
Primær færdiggørelse (Faktiske)
Studieafslutning (Faktiske)
Datoer for studieregistrering
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først opslået (Skøn)
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
- 13-0958
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