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Longitudinal Study of Vaginal Flora

30 juni 2017 bijgewerkt door: Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)

Bacterial vaginosis is a syndrome manifested by adverse alterations in vaginal microbial flora. It is present in 10 to 25% of women in the general population, and is the most common vaginal infection. It has been associated with a number of adverse sequelae in reproductive health including acquisition of HIV, pelvic inflammatory disease, cervical dysplasia, and complications of gynecological procedures. During pregnancy it has been associated with an increased risk of preterm birth an postpartum maternal infection. However, the vaginal microbial flora remains poorly understood. Information on variation in microbial flora and its association with BV from a longitudinal study is unavailable. This prospective observational study aims to advance our knowledge of the natural history and abnormal alteration in vaginal microbial flora, and to identify risk factors that are associated with these changes. A total of 5500 healthy, non-pregnant women of reproductive age will be enrolled and followed up in Birmingham, Alabama, for one year (baseline visit plus once every three months afterwards, totaling 5 visits). Detailed information on sociodemographic status, medical history, hygiene practice, sexual behavior and psychosocial stress will be collected through in-person interviews. Routine gynecological and dental examinations will be carried out during the study visits. Samples of vaginal secretion and blood will be collected. Laboratory tests to quantify vaginal microbial flora and to identify infection of bacterial vaginosis as well as common sexually transmitted diseases will be conducted. This project is expected to complete in 5 years.

Studie Overzicht

Toestand

Voltooid

Conditie

Vaginale flora

Gedetailleerde beschrijving

Bacterial vaginosis is a syndrome manifested by adverse alterations in vaginal microbial flora. It is present in 10 to 25% of women in the general population, and is the most common vaginal infection. It has been associated with a number of adverse sequelae in reproductive health including acquisition of HIV, pelvic inflammatory disease, cervical dysplasia, and complications of gynecological procedures. During pregnancy it has been associated with an increased risk of preterm birth and postpartum maternal infection. However, the vaginal microbial flora remains poorly understood. Information on variation in microbial flora and its association with BV from a longitudinal study is unavailable. This prospective observational study aims to advance our knowledge of the natural history and abnormal alteration in vaginal microbial flora, and to identify risk factors that are associated with these changes. A total of 5500 healthy, non-pregnant women of reproductive age will be enrolled and followed up in Birmingham, Alabama, for one year (baseline visit plus once every three months afterwards, totaling 5 visits). Detailed information on sociodemographic status, medical history, hygiene practice, sexual behavior and psychosocial stress will be collected through in-person interviews. Routine gynecological and dental examinations will be carried out during the study visits. Samples of vaginal secretion and blood will be collected. Laboratory tests to quantify vaginal microbial flora and to identify infection of bacterial vaginosis as well as common sexually transmitted diseases will be conducted. This project is expected to complete in 5 years.

Studietype

Observationeel

Inschrijving (Verwacht)

5500

Contacten en locaties

In dit gedeelte vindt u de contactgegevens van degenen die het onderzoek uitvoeren en informatie over waar dit onderzoek wordt uitgevoerd.

Studie Locaties

Verenigde Staten
- Alabama
  - Birmingham, Alabama, Verenigde Staten
    - University of Alabama

Deelname Criteria

Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.

Geschiktheidscriteria

Leeftijden die in aanmerking komen voor studie

15 jaar tot 44 jaar (Kind, Volwassen)

Accepteert gezonde vrijwilligers

Nee

Geslachten die in aanmerking komen voor studie

Vrouw

Beschrijving

ELIGIBILITY CRITERIA:
Females, age 15-44.
Since bacterial vaginosis is primarily a condition of reproductive-age women, this study will be restricted to women regarded by demographers as reproductive age.
Non-pregnant women whose last menstrual period is later than expected will undergo a urine pregnancy test. Women who become pregnant while on study will complete their next regularly scheduled study visit, following which their participation will terminate.

EXCLUSION CRITERIA:

Immunocompromised status
Receiving or expected to receive in the next 12 months cytotoxic or immunosuppressive drugs.
Receiving or expected to receive in the next 12 months one or more 30-day courses of corticosteroids.
Congenital or acquired immune deficiency; known HIV positivity.
Primary or secondary affective disorder, psychosis, emotional or intellectual limitations that preclude informed consent.
Non-fluency in English.
Post-menopausal (natural or surgical).
Status post hysterectomy or expected to undergo hysterectomy in the next 12 months.
Status post pelvic radiotherapy, or expected to undergo pelvic radiotherapy in the next 12 months.
Receiving or expected to receive chronic (daily for at least 30 days) antibiotics in the next 12 months.
Planning to move out of the area in the next 12 months.
Participating or expected to participate during the next 12 months in a clinical trial in which antibiotics or topical microbicides will be administered in a blinded manner.
Women who unexpectedly develop one of these conditions during their participation will continue to be followed, unless a specific contraindication arises.

Studie plan

Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.

Hoe is de studie opgezet?

Medewerkers en onderzoekers

Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.

Sponsor

Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)

Publicaties en nuttige links

De persoon die verantwoordelijk is voor het invoeren van informatie over het onderzoek stelt deze publicaties vrijwillig ter beschikking. Dit kan gaan over alles wat met het onderzoek te maken heeft.

Algemene publicaties

Studie record data

Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.

Bestudeer belangrijke data

Studie start

14 april 1999

Studie voltooiing

18 november 2010

Studieregistratiedata

Eerst ingediend

19 juni 2006

Eerst ingediend dat voldeed aan de QC-criteria

19 juni 2006

Eerst geplaatst (Schatting)

21 juni 2006

Updates van studierecords

Laatste update geplaatst (Werkelijk)

2 juli 2017

Laatste update ingediend die voldeed aan QC-criteria

30 juni 2017

Laatst geverifieerd