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Longitudinal Study of Vaginal Flora

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.

Studieoversigt

Status

Afsluttet

Betingelser

Detaljeret beskrivelse

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.

Undersøgelsestype

Observationel

Tilmelding (Forventet)

5500

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

    • Alabama
      • Birmingham, Alabama, Forenede Stater
        • University of Alabama

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

15 år til 44 år (Barn, Voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Kvinde

Beskrivelse

  • 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:

  1. 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.

  2. Primary or secondary affective disorder, psychosis, emotional or intellectual limitations that preclude informed consent.
  3. Non-fluency in English.
  4. Post-menopausal (natural or surgical).
  5. Status post hysterectomy or expected to undergo hysterectomy in the next 12 months.
  6. Status post pelvic radiotherapy, or expected to undergo pelvic radiotherapy in the next 12 months.
  7. Receiving or expected to receive chronic (daily for at least 30 days) antibiotics in the next 12 months.
  8. Planning to move out of the area in the next 12 months.
  9. 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.
  10. Women who unexpectedly develop one of these conditions during their participation will continue to be followed, unless a specific contraindication arises.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Publikationer og nyttige links

Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart

14. april 1999

Studieafslutning

18. november 2010

Datoer for studieregistrering

Først indsendt

19. juni 2006

Først indsendt, der opfyldte QC-kriterier

19. juni 2006

Først opslået (Skøn)

21. juni 2006

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

2. juli 2017

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

30. juni 2017

Sidst verificeret

18. november 2010

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • 999999023
  • OH99-CH-N023

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .