Q J Med 1999; 92: 551-563
© 1999 Association of Physicians
Review |
The effects of methotrexate on pregnancy, fertility and lactation
From the Department of Rheumatology, Frimley Park Hospital, Frimley, 1 Department of Rheumatology, St Peter's Hospital, Chertsey, and 2 National Teratology Information Service, Newcastle-upon-Tyne, UK
Dr M.E. Lloyd, Department of Rheumatology, Frimley Park Hospital, Portsmouth Road, Frimley, Surrey GU16 5UJ
| Introduction |
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Low-dose weekly methotrexate (MTX) is widely used in the treatment of rheumatoid arthritis1 and is now increasingly used in other rheumatic conditions, including systemic lupus erythematosus and juvenile arthritis. Because of its anti-metabolic and cytotoxic actions, questions of its safety in those of childbearing age are likely to become increasingly important. The aim of this review is to aid clinicians in the counselling and education of patients taking or about to start taking low-dose MTX. We examine the effects of MTX with respect to fertility, pregnancy and lactation, based upon information obtained using `Medline' search strategies from 1966 to 1997, hand search through the last ten years of the journal Teratology, source paper references and data from the UK National Teratology Information Service (NTIS) from 1992.
| Background |
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MTX is a derivative of the folic acid analogues. The importance of folic acid, a B group vitamin, in haematopoiesis was realized in the
| Methotrexate in pregnancy |
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Folic acid deficiency in pregnancy
Animal studies
Human studies
Folic acid antagonists in pregnancy: animal studies
Folic acid antagonists in pregnancy: humans
The aminopterin syndrome
Methotrexate in malignant conditions
Low-dose methotrexate
Methotrexate in late pregnancy
Other cases
Methotrexate exposure before conception
Summary of evidence for methotrexate as a possible teratogen
Folic acid supplementation and methotrexate exposure
Methotrexate and abortion
Long-term effects of methotrexate treatment in pregnancy
Methotrexate and fertility
Methotrexate and breast feeding
| Conclusions |
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| References |
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This article has been cited by other articles:
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