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Effect of Vitamin D on Hormonal, Metabolic and Cardiovascular Risk Factors in Patients With Polycystic Ovary Syndrome

The Effect of Colecalciferol (Vitamin D) on Hormonal, Metabolic and Cardiovascular Risk Factors in Patients With Polycystic Ovary Syndrome (PCOS) - a Double Blind Randomised Placebo-controlled Study

This is a double blind randomised placebo-controlled study involving women with polycystic ovary syndrome (PCOS). The patients will be randomised either to Vitamin D 3200 IU or placebo for three months. The main hypothesis of this study is "Vitamin D improves hormonal, metabolic and cardiovascular risk markers in women with PCOS".

Studieoversigt

Status

Afsluttet

Detaljeret beskrivelse

Polycystic ovary syndrome (PCOS) is a very common condition in women which could present with irregular periods, excessive hair growth on body, acne and cysts in the ovaries. PCOS is also associated with increased risk of problems later in life like diabetes, high cholesterol levels and heart disease. One of the risk factors for having increased incidence of such problems in PCOS patients could be low vitamin D levels as many women with polycystic ovary syndrome (PCOS) are vitamin D deficient. Vitamin D supplementation may have a beneficial effect on insulin levels and fat around the abdomen. It has been seen in previous research studies that low level of vitamin D is related to a greater risk of diabetes and heart disease. Low vitamin D levels are also associated with fat in the liver. The amount of fat in the liver is a sign of early liver disease. So, in this study the investigators want to supplement women having PCOS and vitamin D deficiency with vitamin D (3,200 IU) and examine the effects on hormones related to PCOS and risk factors for diabetes and heart disease in them.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

40

Fase

  • Ikke anvendelig

Kontakter og lokationer

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

Studiesteder

    • East Yorkshire
      • Hull, East Yorkshire, Det Forenede Kongerige, HU3 2RW
        • Michael White Centre for Diabetes and Endocrinology

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 45 år (Voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Kvinde

Beskrivelse

Inclusion Criteria:

  1. Caucasian women, aged 18-45 years, with confirmed diagnosis of PCOS based on all three diagnostic criteria of the Rotterdam consensus [21].
  2. Irregular periods with raised FAI
  3. Vitamin D < 50 nmol/L.

Exclusion Criteria:

  1. Non-classical 21-hydroxylase deficiency, hyperprolactinaemia, Cushing's disease and androgen-secreting tumours will be excluded by appropriate tests if clinically indicated.
  2. Any concurrent illness including type 2 diabetes, subjects who are on any medication (including medications that interfere with calceotrophic hormones) for the preceding 6 months.
  3. Women planning to conceive.
  4. Women who are using any oral or implantable contraceptives or any other treatments likely to affect ovarian function, insulin sensitivity or lipids for at least 3 months before entering the study. Stable dose of metformin for 3 months is allowed. Subjects will be advised to use barrier contraception during the study period.
  5. eGFR<60.
  6. Hypersensitivity to vitamin D or any of the excipients in the product.
  7. Peanut or soya allergy.
  8. Nephrolithiasis.
  9. Diseases or conditions resulting in hypercalcaemia and/or hypercalciuria.

Studieplan

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

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Sundhedstjenesteforskning
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Dobbelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Aktiv komparator: Vitamin D3, 3200IU
Each participant will receive either Vitamin D3, 3200IU or Placebo daily for three months.
Each participant will receive either Vitamin D3, 3200IU or Placebo daily for three months.
Placebo komparator: Placebo
Each participant will receive either Vitamin D3, 3200IU or Placebo daily for three months.
Each participant will receive either Vitamin D3, 3200IU or Placebo daily for three months.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Tidsramme
Cardiovascular risk assessment by hs-CRP, HOMA (fasting glucose & insulin) and fasting lipid profile
Tidsramme: Three months supplementation with Vitamin D3 3200IU or placebo
Three months supplementation with Vitamin D3 3200IU or placebo

Sekundære resultatmål

Resultatmål
Tidsramme
Hormonal parameters including testosterone, SHBG and FAI.
Tidsramme: Three months supplementation with Vitamin D3 3200IU or placebo
Three months supplementation with Vitamin D3 3200IU or placebo
Inflammatory marker hs-CRP
Tidsramme: Three months supplementation with Vitamin D3 3200IU or placebo
Three months supplementation with Vitamin D3 3200IU or placebo
Endothelial function by EndoPAT
Tidsramme: Three months supplementation with Vitamin D3 3200IU or placebo
Three months supplementation with Vitamin D3 3200IU or placebo

Samarbejdspartnere og efterforskere

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

Samarbejdspartnere

Efterforskere

  • Ledende efterforsker: Thozhukat Sathyapalan, MD, FRCP, University of Hull

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.

Hjælpsomme links

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. juli 2015

Primær færdiggørelse (Faktiske)

1. november 2016

Studieafslutning (Faktiske)

1. november 2016

Datoer for studieregistrering

Først indsendt

23. juli 2015

Først indsendt, der opfyldte QC-kriterier

29. juli 2015

Først opslået (Skøn)

31. juli 2015

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

16. juli 2019

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

12. juli 2019

Sidst verificeret

1. juli 2019

Mere information

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 .

Kliniske forsøg med Polycystisk ovariesyndrom

Kliniske forsøg med Vitamin D3, 3200IU

Abonner