Cited by 157Blood Coagulation and Thrombosis MechanismsVenous Thromboembolism Diagnosis and ManagementPlatelet Disorders and Treatments

Effect of second- and third-generation oral contraceptives on the protein C system in the absence or presence of the factor VLeiden mutation: a randomized trial

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Kemmeren, Jeanet M., Algra, Ale, Meijers, Joost C. M., Tans, Guido, Bouma, Bonno N., Curvers, Joyce, Rosing, Jan, Grobbee, Diederick E.·2004·Blood

Abstract

A plausible mechanism to explain thrombotic risk differences associated with the use of second- and third-generation oral contraceptives (OCs), particularly in carriers of factor V(Leiden), is still lacking. In a double-blind trial, 51 women without and 35 women with factor V(Leiden) were randomized to either a second- (30 microg ethinylestradiol/150 microg levonorgestrel) or third- (30 microg ethinylestradiol/150 microg desogestrel) generation OC. After 2 cycles of use and a wash-out of 2 cycles, the participants continued with the corresponding progestagen-only preparation. Hemostatic variables that probe the activity of the anticoagulant protein C system were determined. Compared with levonorgestrel, desogestrel-containing OCs significantly decreased protein S and increased activated protein C (APC) resistance in both groups. OCs with desogestrel had the most pronounced effects in carriers of factor V(Leiden). Progestagen-only preparations caused changes of anticoagulant parameters opposite to those of combined OCs, which in a number of cases were more pronounced with levonorgestrel. Our data show that progestagens in combined OCs counteract the thrombotic effect of the estrogen component. The higher thrombotic risk associated with third-generation OCs compared with second-generation OCs may be explained by the fact that desogestrel appeared less antithrombotic than levonorgestrel, especially in women with factor V(Leiden).

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Crossref · 10.1182/blood-2003-04-1285

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  • The credibility of much debated epidemiologic findings of a difference in thrombosis risk between different types of oral contraceptives was greatly enhanced by the differences in coagulation found in a randomised cross-over trial.

    “In contrast, the credibility of much debated epidemiologic findings of a difference in thrombosis risk between different types of oral contraceptives was greatly enhanced by the differences in coagulation found in a randomised cross-over trial [ 214 ].”

    From Strengthening the Reporting of Observational Studies in Epidemiology (STROBE): Explanation and Elaboration (2007) · cites this paper as [214]

    The Discussion (page not supplied) reports stronger effects on anticoagulant parameters with third-generation than second-generation oral contraceptives and links those differences to thrombotic risk. But the Study design and participants section (page not supplied) shows that this paper randomized women to one contraceptive type, then switched them to the corresponding progestagen-only preparation; it was not a cross-over trial comparing the two types. The Introduction describes such a cross-over study as earlier work. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • CHC use causes a pronounced decrease in total and free Protein S antigen, more significantly with third-generation progesterone-containing CHCs.

    “Simultaneously, a pronounced decrease in levels of Protein S antigen (total and free) has been noted with CHC use, more significantly with use of 3rd generation progesterone containing CHCs[63, 65, 66] and in post-menopausal women [64].”

    From Estrogen and thrombosis: a bench to bedside review (2020) · cites this paper as [65]

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Authors
Kemmeren, J. M., Algra, A., Meijers, J. C. M., Tans, G., Bouma, B. N., Curvers, J., Rosing, J., & Grobbee, D. E.
Affiliations
Amsterdam UMC Location University of Amsterdam (NL)
Venue
Blood
Published
2004-02-01
Volume
103
Issue
3
Pages
927-933
ISSN
  • 0006-4971 (ISSN-L)
  • 1528-0020
OpenAlex
W2130928200
Cited by
157
References
41
Citations by year
2025: 4 · 2024: 7 · 2023: 4 · 2022: 7 · 2021: 2 · 2020: 5 · 2019: 8 · 2018: 6 · 2017: 5 · 2016: 8 · 2015: 9 · 2014: 7 · 2013: 11 · 2012: 8
FWCI
3.14
Type
journal article
Language
en
Open access
Locations
  • Blood (publishedVersion)
  • PubMed (publishedVersion)
  • Pure Amsterdam UMC (publishedVersion)
  • Data Archiving and Networked Services (DANS) (submittedVersion)
  • Utrecht University Repository (Utrecht University) (submittedVersion, other-oa)
Topics
  • Health Sciences › Medicine › Hematology › Blood Coagulation and Thrombosis Mechanisms
  • Health Sciences › Medicine › Internal Medicine › Venous Thromboembolism Diagnosis and Management
  • Health Sciences › Medicine › Hematology › Platelet Disorders and Treatments
Keywords
oral contraceptives, factor V Leiden, protein C system, protein S, activated protein C resistance, desogestrel, levonorgestrel, progestogens, thrombosis risk, ethinyl estradiol, anticoagulant activity
MeSH terms
Adolescent, Adult, Contraceptives, Oral, Combined, Ethinyl Estradiol, Factor V, Female, Humans, Mutation, Protein C, Risk Factors, Thrombosis, Levonorgestrel, Desogestrel

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