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Can Atorvastatin Improve Vascular Function in Women With a History of Preeclampsia? (PVS3)

29. maj 2015 opdateret af: University of Oxford

Can Atorvastatin Improve Vascular Function in Women With a History of Preeclampsia? A Randomised, Double-blinded, Placebo-controlled Crossover Trial of Atorvastatin in Women With a History of Preeclampsia.

The purpose of the study is to test the hypothesis that a short course of atorvastatin can improve vascular function in women with a history of preeclampsia, compared to placebo.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

Women with a history of preeclampsia (high blood pressure/protein in the urine during pregnancy) are at increased risk of developing high blood pressure and heart problems in the 10-15 years after their baby is born. At present we do not know how to reduce this risk. Lowering blood pressure and blood lipid (fats) levels are common strategies for primary prevention of cardiovascular problems. However, most women with a history of preeclampsia in the 5-10 years after pregnancy, will have normal blood pressure readings, blood sugar and cholesterol levels.

Atorvastatin, a type of "statin", is widely used in lowering lipids and preventing cardiovascular disease. This drug has beneficial actions other than lipid-lowering, that may also help prevent cardiovascular problems, including improving function in the lining of blood vessels. We know that impairment in blood vessel function is evident in women in the years after a preeclamptic pregnancy and may contribute to the risk of women after preeclampsia going on to develop cardiovascular disease.

We would like to know if giving a short course of atorvastatin to women with a history of preeclampsia improves their blood vessel function. To do this, ex-preeclamptic women will be invited to take either a atorvastatin or placebo ("dummy") tablet daily for 4 weeks, then no tablets for 4 weeks, then "crossover" to receive the alternative tablet (placebo or atorvastatin) daily for 4 weeks. Blood vessel function would be measured using specialised noninvasive scans and taking a blood test at the beginning and end of each treatment period. The study will be jointly run by the Departments of Cardiovascular Medicine and Obstetrics & Gynaecology at the John Radcliffe Hospital, Oxford.

We anticipate this study will provide valuable data to support larger clinical trials to determine whether improving blood vessel function ultimately reduces the risk of developing early-onset cardiovascular disease after preeclampsia.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

11

Fase

  • Fase 3

Kontakter og lokationer

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

Studiesteder

  • Det Forenede Kongerige
      • Oxford, Det Forenede Kongerige, OX3 9DU
        • University of Oxford Department of Cardiovascular Medicine

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

18 år til 50 år (Voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Kvinde

Beskrivelse

Inclusion Criteria:

  • Participant is willing and able to give informed consent for participation in the study.
  • Diagnosed with preeclampsia during index pregnancy: defined as (1) new onset hypertension (>140/90 mmHg) after 20 weeks gestation and (2) proteinuria (>0.3g protein/24 hours).
  • Participants of child bearing potential must be willing to ensure that they or their partner use effective contraception during the study and for 4 weeks after.
  • Participants must be willing to undertake urine pregnancy test at the start of each 4 week phase of the study to exclude unintended pregnancy.
  • Participants must have clinically acceptable laboratory markers of renal, thyroid and hepatic function at enrolment.
  • Able (in the Investigator's opinion) and willing to comply with all study requirements.
  • Willing to allow her General Practitioner and consultant, if appropriate, to be notified of participation in the study and results of clinical laboratory tests.

Exclusion Criteria:

Participants must not be

  • Pregnant, lactating during the course of the study.
  • Planning pregnancy during course of study or in 4 weeks after study completion
  • Taking other medication, whether prescribed or over-the-counter, in the four weeks before first study dose and during the study other than for example mild analgesia or hormonal contraception.
  • Taking vitamin medications that may interact with atorvastatin (e.g. niacin, Vitamin D)
  • Terminally ill or is inappropriate for placebo medication
  • Planning to undertake donation of blood during the study.

Studieplan

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

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Forebyggelse
  • Tildeling: Randomiseret
  • Interventionel model: Crossover opgave
  • Maskning: Dobbelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Atorvastatin first
Participants receive 4 week treatment with atorvastatin 20mg/day, followed by 4 week washout, followed by 4 week treatment with placebo.
Medicin: Atorvastatin
4 week treatment, 20mg/day taken orally in tablet form
Eksperimentel: Placebo first
Participants receive 4 week treatment with placebo, followed by 4 weeks washout, followed by 4 weeks treatment with atorvastatin 20mg/day.
Medicin: Atorvastatin
4 week treatment, 20mg/day taken orally in tablet form

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Tidsramme
Alteration in brachial artery flow-mediated dilatation
Tidsramme: After 4 weeks treatment with atorvastatin or placebo
After 4 weeks treatment with atorvastatin or placebo

Sekundære resultatmål

Resultatmål
Tidsramme
Microvascular endothelial function as measured by laser doppler flowmetry
Tidsramme: After 4 weeks treatment with atorvastatin or placebo
After 4 weeks treatment with atorvastatin or placebo
Resistance vessel endothelial function as measured by venous occlusion plethysmography
Tidsramme: After 4 weeks treatment with atorvastatin or placebo
After 4 weeks treatment with atorvastatin or placebo
Indices of arterial stiffness as measured by arterial tonometry and carotid artery distensibility
Tidsramme: After 4 weeks treatment with atorvastatin or placebo
After 4 weeks treatment with atorvastatin or placebo
Plasma biomarkers of inflammation and endothelial function
Tidsramme: After 4 weeks treatment with atorvastatin or placebo
After 4 weeks treatment with atorvastatin or placebo
Endothelial glycocalyx as measured by sublingual Microscan
Tidsramme: After 4 weeks treatment with atorvastatin or placebo
After 4 weeks treatment with atorvastatin or placebo

Samarbejdspartnere og efterforskere

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

Sponsor

University of Oxford

Efterforskere

  • Ledende efterforsker: Paul Leeson, PhD MRCP FESC, University of Oxford

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

1. oktober 2011

Primær færdiggørelse (Faktiske)

1. april 2012

Studieafslutning (Faktiske)

1. april 2012

Datoer for studieregistrering

Først indsendt

14. januar 2011

Først indsendt, der opfyldte QC-kriterier

14. januar 2011

Først opslået (Skøn)

17. januar 2011

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Skøn)

1. juni 2015

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

29. maj 2015

Sidst verificeret

1. maj 2015

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • 2008-005759-21

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