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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">rsp</journal-id><journal-title-group><journal-title xml:lang="ru">Научно-практическая ревматология</journal-title><trans-title-group xml:lang="en"><trans-title>Rheumatology Science and Practice</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1995-4484</issn><issn pub-type="epub">1995-4492</issn><publisher><publisher-name>IMA-PRESS, LLC</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.14412/1995-4484-2013-649</article-id><article-id custom-type="elpub" pub-id-type="custom">rsp-787</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Articles</subject></subj-group></article-categories><title-group><article-title>Как же назначать фолиевую кислоту при ревматоидном артрите в период лечения метотрексатом?</article-title><trans-title-group xml:lang="en"><trans-title>How is folic acid to be used in rheumatoid arthritis during methotrexate treatment?</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Муравьев</surname><given-names>Ю. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Muravyev</surname><given-names>Yuri Vladimirovich</given-names></name></name-alternatives><email xlink:type="simple">muravyu@mail.ru</email></contrib></contrib-group><pub-date pub-type="collection"><year>2013</year></pub-date><pub-date pub-type="epub"><day>15</day><month>04</month><year>2013</year></pub-date><volume>51</volume><issue>2</issue><issue-title>№2 (2013)</issue-title><fpage>201</fpage><lpage>204</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Муравьев Ю.В., 2013</copyright-statement><copyright-year>2013</copyright-year><copyright-holder xml:lang="ru">Муравьев Ю.В.</copyright-holder><copyright-holder xml:lang="en">Muravyev Y.V.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://rsp.mediar-press.net/rsp/article/view/787">https://rsp.mediar-press.net/rsp/article/view/787</self-uri></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">&lt;div&gt;&lt;p&gt;Combe B., Landewe R., Lukas C. et al. EULAR recommendations for the management of early arthritis: report of a task force of the European Standing Committee for International Clinical Studies Including Therapeutics (ESCISIT). Ann Rheum Dis 2007;66:34-45.&lt;/p&gt;&lt;p&gt;Tugwell P., Bennett K., Gent M. Methotrexate in rheumatoid arthritis. Indications, contraindications, efficacy, and safety. Ann Intern Med 1987;107:358-66.&lt;/p&gt;&lt;p&gt;Felson D., Anderson J.J., Meenan R.F. The comparative efficacy and toxicity of second-line drugs in rheumatoid arthritis. Results of two meta-analyses. Arthr Rheum 1990;33:1449-61.&lt;/p&gt;&lt;p&gt;Felson D.T., Anderson J.J., Meenan R.F. Use of short-term efficacy/toxicity tradeoffs to select second-line drugs in rheumatoid arthritis. A meta-analysis of published clinical trials. Arthr Rheum 1992;35:1117-25.&lt;/p&gt;&lt;p&gt;Cronstein B.N. Molecular therapeutics. Methotrexate and its mechanism of action. Arthr Rheum 1996;39:1951-60.&lt;/p&gt;&lt;p&gt;Morgan S.L., Baggott J.E., Vaughn W.H. et al. The effect of folic acid supplementation on the toxicity of low-dose methotrexate in patients with rheumatoid arthritis. Arthr Rheum 1990;33:9-18.&lt;/p&gt;&lt;p&gt;Alarcon G.S., Tracy I.C., Blackburn W.D. Methotrexate in rheumatoid arthritis. Toxic effects as the major factor in limiting long-term treatment. Arthr Rheum 1989;32:671-6.&lt;/p&gt;&lt;p&gt;Ortiz Z., Shea B., Suarez-Almazor M.E. et al. The efficacy of folic acid and folinic acid in reducing methotrexate gastrointestinal toxicity in rheumatoid arthritis. A metaanalysis of randomized controlled trials. J Rheumatol 1998;25:36-43.&lt;/p&gt;&lt;p&gt;Guidelines for monitoring drug therapy in rheumatoid arthritis. American College of Rheumatology Ad Hoc Committee on Clinical Guidelines. Arthr Rheum 1996;39:723-31.&lt;/p&gt;&lt;p&gt;National Guidelines for the Monitoring of Second Line Drugs. London: British Society for Rheumatology, 2000.&lt;/p&gt;&lt;p&gt;Canhao H., Santos M.J., Costa L. et al. Portuguese recommendations for the use of methotrexate in the treatment of rheumatoid arthritis. Acta Reumatol Port 2009;34:78-95.&lt;/p&gt;&lt;p&gt;Diaz-Borpn A. Guidelines for the use of conventional and newer disease-modifying antirheumatic drugs in elderly patients with rheumatoid arthritis. Drugs Aging 2009;26:273-93.&lt;/p&gt;&lt;p&gt;Pavy S., Constantin A., Pham T. et al. Methotrexate therapy for rheumatoid arthritis: clinical practice guidelines based on published evidence and expert opinion. Joint Bone Spine 2006;73:388-95.&lt;/p&gt;&lt;p&gt;Endresen G.K., Husby G. Folate supplementation during methotrexate treatment of patients with rheumatoid arthritis. An update and proposals for guidelines. Scand J Rheumatol 2001;30:129-34.&lt;/p&gt;&lt;p&gt;Morgan S.L., Baggott J.E., Vaughn W.H. et al. Supplementation with folic acid during methotrexate therapy for rheumatoid arthritis. A double-blind, placebo-controlled trial. Ann Intern Med 1994;121:833-41.&lt;/p&gt;&lt;p&gt;Morgan S.L., Baggott J.E., Vaughn W.H. et al. 5 mg or 50 mg/week of folic acid supplementation does not alter the efficacy of methotrexate treated rheumatoid arthritis patients [abstract]. Arthr Rheum 1992;35(Suppl 5):18.&lt;/p&gt;&lt;p&gt;Van Ede A.E., Laan R.F., Rood M.J. et al. Effect of folic or folinic acid supplementation on the toxicity and efficacy of methotrexate in rheumatoid arthritis: a forty-eight week, multicenter, randomized, double-blind, placebo-controlled study. Arthr Rheum 2001;44:1515-24.&lt;/p&gt;&lt;p&gt;Whittle S.L., Hughes R.A. Folate supplementation and methotrexate treatment in rheumatoid arthritis: a review. Rheumatology (Oxford) 2004;43:267-71.&lt;/p&gt;&lt;p&gt;Strand V., Cohen C., Schiff M. et al. Treatment of active rheumatoid arthritis with leflunomidecompared with placebo and methotrexate. Arch Intern Med 1999;159:2542-50.&lt;/p&gt;&lt;p&gt;Emery P., Breedveld F.C., Lemmel E.M. et al. A comparison of the efficacy and safety of leflunomide and methotrexate for the treatment of rheumatoid arthritis. Rheumatology 2000;39:655-65.&lt;/p&gt;&lt;p&gt;Schiff M.H. Leflunomide versus methotrexate: a comparison of the European and American experience. Scand J Rheumatol 1999;112(Suppl):31-5.&lt;/p&gt;&lt;p&gt;Strand V., Alto P., Morgan S.L. et al. Folic acid supplementation and methotrexate efficacy: comment on articles by Schiff, Emery et al, and others. Arthr Rheum 2000;43:2615-6.&lt;/p&gt;&lt;p&gt;Griffith S.M., Fisher J., Clarke S. et al. Do patients with rheumatoid arthritis established on methotrexate and folic acid 5 mg daily need to continue folic acid supplements long term? Rheumatology 2000;39:1102-9.&lt;/p&gt;&lt;p&gt;Регистр лекарственных средств России. Энциклопедия лекарств. М.: ООО «РЛС», 2004; 544 с.&lt;/p&gt;&lt;p&gt;Инструкция по медицинскому применению препарата Метотрексат-ЭБЕВЕ (methotrexate-ebewe). Регистрационный номер: П № 015225/01, П № 015225/02, П № 015225/03.EBEWE Pharma Ges.m.b.H.Nfg.KG A-4866 Unterach, Austria.&lt;/p&gt;&lt;p&gt;Инструкция по медицинскому применению препарата Метотрексат(Methotrexate), регистрационный номер Р № 000970/01, ОАО «Валента Фармацевтика».&lt;/p&gt;&lt;p&gt;Ревматические болезни: Руководство для врачей. Под ред. В.А. Насоновой, Н.В. Бунчука. М.: Медицина, 1997; 520 с.&lt;/p&gt;&lt;p&gt;Клиническая ревматология: Руководство для врачей. Под ред. чл.-корр. РАМН проф. В.И. Мазурова. 2-е изд., перераб. и доп. СПб.: ФОЛИАНТ, 2005; 520 с.&lt;/p&gt;&lt;p&gt;Вест С.Дж. Секреты ревматологии: Пер с англ. М.-СПб.: Изд-во БИНОМ Невский Диалект, 1999; 768 с.&lt;/p&gt;&lt;p&gt;Cush J.J. Rheumatoid arthritis. Clin Simp 1999;51:2-40.&lt;/p&gt;&lt;p&gt;Ревматология: Национальное руководство. Под ред. Е.Л. Насонова, В.А. Насоновой. М.: ГЭОТАР-Медиа, 2008; 209 с.&lt;/p&gt;&lt;p&gt;Haagsma C.J., Blom H.J., van Riel P.L. et al. Influence of sul-phasalazine, methotrexate, and the combination of both on plasma homocysteine concentrations in patients with rheumatoid arthritis. Ann Rheum Dis 1999;58:79-84.&lt;/p&gt;&lt;p&gt;Andersen L.S., Hansen E.L., Knudsen J.B. et al. Prospectively measured red cell folate levels in mеthotrexate treated patients with rheumatoid arthritis: relation to withdrawal and side effects. J Rheumatol 1997;24:830-7.&lt;/p&gt;&lt;p&gt;Van Ede A.E., Laan R.F., Blom H.J. et al. Homocysteine and folate status in methotrexate-treated patients with rheumatoid arthritis. Rheumatology (Oxford) 2002;41:658-65.&lt;/p&gt;&lt;p&gt;Rubenoff R., Dellapria P., Nadeau M.R. et al. Abnormal homocystein metabolism in rheumatoid arthritis. Arthr Rheum 1997;40:718-22.&lt;/p&gt;&lt;p&gt;Welch G.N., Loscalzo J. Homocysteine and atherothrombosis. N Engl J Med 1998;338:1042-50.&lt;/p&gt;&lt;p&gt;Frosst P., Blom H.J., Milos R. et al. A candidate genetic risk for vascular disease: a common mutation in methylenetetrahydrofolate reductase. Nature Genet 1995;10:111-3.&lt;/p&gt;&lt;p&gt;Engbersen A.M.T., Franken D.G., Boers G.H.J. et al. Thermolabile 5,10-methylenetetrahydrofolate reductase as a cause of mild hyperhomocysteinemia. Am J Hum Genet 1995;56:142-50.&lt;/p&gt;&lt;p&gt;Rosen R. Genetic predisposition to hyperhomocysteinemia: deficiency of methylentetrahyddrofolate reductase (MTHFR). Thromb Haemost 1997;78:523-6.&lt;/p&gt;&lt;p&gt;Butz L.W., Du Vigneaud V. The formation of a homologue of cys tine by the decomposition of methionine with sulfuric acid. J Biol Chem 1932;99:135-42.&lt;/p&gt;&lt;p&gt;Mudd S.H., Finkelstein J.D., Refsum H. et al. Homocysteine and its disulfide derivatives: a suggested consensus terminology. Arterioscler Thromb Vasc Biol 2000;20:1704-6.&lt;/p&gt;&lt;p&gt;Rubenoff R., Dellapria P., Nadeau M. R. et al. Abnormal homocystein metabolism in rheumatoid arthritis. Arthr Rheum 1997;40:718-22.&lt;/p&gt;&lt;p&gt;McCully K.S. Vascular pathology of homocysteinemia; implications for the the patogenesis of arteriosclerosis. Am J Pathol 1969;56:111-28.&lt;/p&gt;&lt;p&gt;Nygard O., Nordrehaug J.E., Refsum H. et al. Plasma homocysteine levels and mortaliry in patients with coronary artery disease. N Engl J Med 1997;337:230-7.&lt;/p&gt;&lt;p&gt;Shiroky J.B., Neville C., Esdaile J.M. et al. Low-dose methotrexate with leucovorin (folinic acid) in the management of rheumatoid arthritis: results of a multicenter randomised, double-blind, placebo-controlled trial. Arthr Rheum 1993;36:795-803.&lt;/p&gt;&lt;p&gt;Шершава В.С., Шершава Н.В. Современные научные представления о факторах риска развития сердечнососудистых заболеваний (по материалам 15-го Всемирного Конгресса по кардиологии, состоявшегося 5-9 мая 2002 г. в г. Сиднее, Австралия). Кардиоваск тер профилакт 2003;2:111-7.&lt;/p&gt;&lt;p&gt;Graham I., Daly L., Refsum H. et al. Plasma homocysteine as a risk factor for vascular disease. JAMA 1997;277:1775-81.&lt;/p&gt;&lt;p&gt;Mangioni A.A., Jackson S.H.D. Homocysteine and cardiovascular disease: current evidence and future prospects. Am J Med 2002;112:556-65.&lt;/p&gt;&lt;p&gt;Landewe R.B., van den Borne B.E., Beedveld F.C., Dijkmans B.A. Methotrexate effects in patients with rheumatoid arthritis with cardiovascular comorbidity. Lancet 2000;355:1616-7.&lt;/p&gt;&lt;p&gt;Erb N., Kitas G.D. Homocysteine modulation as a reason for continuous folic acid supplementation in methotrexate-treated rheumatoid arthritis patients. Rheumatology (Oxford) 2001;40:715-6.&lt;/p&gt;&lt;p&gt;Clarke R., Daly L., Robinson K. et al. Hyperhomocysteinemia: an independent risk factor for vascular disease. N Engl J Med 1991;324:1149-55.&lt;/p&gt;&lt;p&gt;Morgan S.L., Baggott J.E., Lee J.Y., Alarcon G.S. Folic acid supplementation prevent deficient blood folate levels and hyperhomo-cysteinemia duruing longterm, low dose methoterxate therapy for rheumatoid arthritis:implications for cardiovascular disease prevention. J Rheumatol 1998;25:441-6.&lt;/p&gt;&lt;p&gt;Slot O. Changes in plasma homocysteine in arthritis patients starting treatment with low-dose methotrexate subsequently supplemented with folic acid. Scand J Rheumatol 2001;30:305-7.&lt;/p&gt;&lt;p&gt;Hoekstra M., Haagsma C.J., Doelman C.J.A., van de Laar M.A.FJ. Intermittent rises in plasma homocysteine in patients with rheumatoid arthritis treated with higher dose methotrexate. Ann Rheum Dis 2005;64:141-3.&lt;/p&gt;&lt;p&gt;Whittle S.L., Hughes R.A. Folate supplementation and methotrexate treatment rheumatoid arthritis:a review. Rheumatology 2004;43:267-71.&lt;/p&gt;&lt;p&gt;Baggott J.E., Oster R.A., Tamura T. Meta-analysis of cancer risk in folic acid supplementation trials. Cancer Epidemiol 2012;36:78-81.&lt;/p&gt;&lt;/div&gt;&lt;br /&gt;</mixed-citation><mixed-citation xml:lang="en">&lt;div&gt;&lt;p&gt;Combe B., Landewe R., Lukas C. et al. EULAR recommendations for the management of early arthritis: report of a task force of the European Standing Committee for International Clinical Studies Including Therapeutics (ESCISIT). Ann Rheum Dis 2007;66:34-45.&lt;/p&gt;&lt;p&gt;Tugwell P., Bennett K., Gent M. Methotrexate in rheumatoid arthritis. Indications, contraindications, efficacy, and safety. Ann Intern Med 1987;107:358-66.&lt;/p&gt;&lt;p&gt;Felson D., Anderson J.J., Meenan R.F. The comparative efficacy and toxicity of second-line drugs in rheumatoid arthritis. Results of two meta-analyses. Arthr Rheum 1990;33:1449-61.&lt;/p&gt;&lt;p&gt;Felson D.T., Anderson J.J., Meenan R.F. Use of short-term efficacy/toxicity tradeoffs to select second-line drugs in rheumatoid arthritis. A meta-analysis of published clinical trials. Arthr Rheum 1992;35:1117-25.&lt;/p&gt;&lt;p&gt;Cronstein B.N. Molecular therapeutics. Methotrexate and its mechanism of action. Arthr Rheum 1996;39:1951-60.&lt;/p&gt;&lt;p&gt;Morgan S.L., Baggott J.E., Vaughn W.H. et al. The effect of folic acid supplementation on the toxicity of low-dose methotrexate in patients with rheumatoid arthritis. Arthr Rheum 1990;33:9-18.&lt;/p&gt;&lt;p&gt;Alarcon G.S., Tracy I.C., Blackburn W.D. Methotrexate in rheumatoid arthritis. Toxic effects as the major factor in limiting long-term treatment. Arthr Rheum 1989;32:671-6.&lt;/p&gt;&lt;p&gt;Ortiz Z., Shea B., Suarez-Almazor M.E. et al. The efficacy of folic acid and folinic acid in reducing methotrexate gastrointestinal toxicity in rheumatoid arthritis. A metaanalysis of randomized controlled trials. J Rheumatol 1998;25:36-43.&lt;/p&gt;&lt;p&gt;Guidelines for monitoring drug therapy in rheumatoid arthritis. American College of Rheumatology Ad Hoc Committee on Clinical Guidelines. Arthr Rheum 1996;39:723-31.&lt;/p&gt;&lt;p&gt;National Guidelines for the Monitoring of Second Line Drugs. London: British Society for Rheumatology, 2000.&lt;/p&gt;&lt;p&gt;Canhao H., Santos M.J., Costa L. et al. Portuguese recommendations for the use of methotrexate in the treatment of rheumatoid arthritis. Acta Reumatol Port 2009;34:78-95.&lt;/p&gt;&lt;p&gt;Diaz-Borpn A. Guidelines for the use of conventional and newer disease-modifying antirheumatic drugs in elderly patients with rheumatoid arthritis. Drugs Aging 2009;26:273-93.&lt;/p&gt;&lt;p&gt;Pavy S., Constantin A., Pham T. et al. Methotrexate therapy for rheumatoid arthritis: clinical practice guidelines based on published evidence and expert opinion. Joint Bone Spine 2006;73:388-95.&lt;/p&gt;&lt;p&gt;Endresen G.K., Husby G. Folate supplementation during methotrexate treatment of patients with rheumatoid arthritis. An update and proposals for guidelines. Scand J Rheumatol 2001;30:129-34.&lt;/p&gt;&lt;p&gt;Morgan S.L., Baggott J.E., Vaughn W.H. et al. Supplementation with folic acid during methotrexate therapy for rheumatoid arthritis. A double-blind, placebo-controlled trial. Ann Intern Med 1994;121:833-41.&lt;/p&gt;&lt;p&gt;Morgan S.L., Baggott J.E., Vaughn W.H. et al. 5 mg or 50 mg/week of folic acid supplementation does not alter the efficacy of methotrexate treated rheumatoid arthritis patients [abstract]. Arthr Rheum 1992;35(Suppl 5):18.&lt;/p&gt;&lt;p&gt;Van Ede A.E., Laan R.F., Rood M.J. et al. Effect of folic or folinic acid supplementation on the toxicity and efficacy of methotrexate in rheumatoid arthritis: a forty-eight week, multicenter, randomized, double-blind, placebo-controlled study. Arthr Rheum 2001;44:1515-24.&lt;/p&gt;&lt;p&gt;Whittle S.L., Hughes R.A. Folate supplementation and methotrexate treatment in rheumatoid arthritis: a review. Rheumatology (Oxford) 2004;43:267-71.&lt;/p&gt;&lt;p&gt;Strand V., Cohen C., Schiff M. et al. Treatment of active rheumatoid arthritis with leflunomidecompared with placebo and methotrexate. Arch Intern Med 1999;159:2542-50.&lt;/p&gt;&lt;p&gt;Emery P., Breedveld F.C., Lemmel E.M. et al. A comparison of the efficacy and safety of leflunomide and methotrexate for the treatment of rheumatoid arthritis. Rheumatology 2000;39:655-65.&lt;/p&gt;&lt;p&gt;Schiff M.H. Leflunomide versus methotrexate: a comparison of the European and American experience. Scand J Rheumatol 1999;112(Suppl):31-5.&lt;/p&gt;&lt;p&gt;Strand V., Alto P., Morgan S.L. et al. Folic acid supplementation and methotrexate efficacy: comment on articles by Schiff, Emery et al, and others. Arthr Rheum 2000;43:2615-6.&lt;/p&gt;&lt;p&gt;Griffith S.M., Fisher J., Clarke S. et al. Do patients with rheumatoid arthritis established on methotrexate and folic acid 5 mg daily need to continue folic acid supplements long term? Rheumatology 2000;39:1102-9.&lt;/p&gt;&lt;p&gt;Регистр лекарственных средств России. Энциклопедия лекарств. М.: ООО «РЛС», 2004; 544 с.&lt;/p&gt;&lt;p&gt;Инструкция по медицинскому применению препарата Метотрексат-ЭБЕВЕ (methotrexate-ebewe). Регистрационный номер: П № 015225/01, П № 015225/02, П № 015225/03.EBEWE Pharma Ges.m.b.H.Nfg.KG A-4866 Unterach, Austria.&lt;/p&gt;&lt;p&gt;Инструкция по медицинскому применению препарата Метотрексат(Methotrexate), регистрационный номер Р № 000970/01, ОАО «Валента Фармацевтика».&lt;/p&gt;&lt;p&gt;Ревматические болезни: Руководство для врачей. Под ред. В.А. Насоновой, Н.В. Бунчука. М.: Медицина, 1997; 520 с.&lt;/p&gt;&lt;p&gt;Клиническая ревматология: Руководство для врачей. Под ред. чл.-корр. РАМН проф. В.И. Мазурова. 2-е изд., перераб. и доп. СПб.: ФОЛИАНТ, 2005; 520 с.&lt;/p&gt;&lt;p&gt;Вест С.Дж. Секреты ревматологии: Пер с англ. М.-СПб.: Изд-во БИНОМ Невский Диалект, 1999; 768 с.&lt;/p&gt;&lt;p&gt;Cush J.J. Rheumatoid arthritis. Clin Simp 1999;51:2-40.&lt;/p&gt;&lt;p&gt;Ревматология: Национальное руководство. Под ред. Е.Л. Насонова, В.А. Насоновой. М.: ГЭОТАР-Медиа, 2008; 209 с.&lt;/p&gt;&lt;p&gt;Haagsma C.J., Blom H.J., van Riel P.L. et al. Influence of sul-phasalazine, methotrexate, and the combination of both on plasma homocysteine concentrations in patients with rheumatoid arthritis. Ann Rheum Dis 1999;58:79-84.&lt;/p&gt;&lt;p&gt;Andersen L.S., Hansen E.L., Knudsen J.B. et al. Prospectively measured red cell folate levels in mеthotrexate treated patients with rheumatoid arthritis: relation to withdrawal and side effects. J Rheumatol 1997;24:830-7.&lt;/p&gt;&lt;p&gt;Van Ede A.E., Laan R.F., Blom H.J. et al. Homocysteine and folate status in methotrexate-treated patients with rheumatoid arthritis. Rheumatology (Oxford) 2002;41:658-65.&lt;/p&gt;&lt;p&gt;Rubenoff R., Dellapria P., Nadeau M.R. et al. Abnormal homocystein metabolism in rheumatoid arthritis. Arthr Rheum 1997;40:718-22.&lt;/p&gt;&lt;p&gt;Welch G.N., Loscalzo J. Homocysteine and atherothrombosis. N Engl J Med 1998;338:1042-50.&lt;/p&gt;&lt;p&gt;Frosst P., Blom H.J., Milos R. et al. A candidate genetic risk for vascular disease: a common mutation in methylenetetrahydrofolate reductase. Nature Genet 1995;10:111-3.&lt;/p&gt;&lt;p&gt;Engbersen A.M.T., Franken D.G., Boers G.H.J. et al. Thermolabile 5,10-methylenetetrahydrofolate reductase as a cause of mild hyperhomocysteinemia. Am J Hum Genet 1995;56:142-50.&lt;/p&gt;&lt;p&gt;Rosen R. Genetic predisposition to hyperhomocysteinemia: deficiency of methylentetrahyddrofolate reductase (MTHFR). Thromb Haemost 1997;78:523-6.&lt;/p&gt;&lt;p&gt;Butz L.W., Du Vigneaud V. The formation of a homologue of cys tine by the decomposition of methionine with sulfuric acid. J Biol Chem 1932;99:135-42.&lt;/p&gt;&lt;p&gt;Mudd S.H., Finkelstein J.D., Refsum H. et al. Homocysteine and its disulfide derivatives: a suggested consensus terminology. Arterioscler Thromb Vasc Biol 2000;20:1704-6.&lt;/p&gt;&lt;p&gt;Rubenoff R., Dellapria P., Nadeau M. R. et al. Abnormal homocystein metabolism in rheumatoid arthritis. Arthr Rheum 1997;40:718-22.&lt;/p&gt;&lt;p&gt;McCully K.S. Vascular pathology of homocysteinemia; implications for the the patogenesis of arteriosclerosis. Am J Pathol 1969;56:111-28.&lt;/p&gt;&lt;p&gt;Nygard O., Nordrehaug J.E., Refsum H. et al. Plasma homocysteine levels and mortaliry in patients with coronary artery disease. N Engl J Med 1997;337:230-7.&lt;/p&gt;&lt;p&gt;Shiroky J.B., Neville C., Esdaile J.M. et al. Low-dose methotrexate with leucovorin (folinic acid) in the management of rheumatoid arthritis: results of a multicenter randomised, double-blind, placebo-controlled trial. Arthr Rheum 1993;36:795-803.&lt;/p&gt;&lt;p&gt;Шершава В.С., Шершава Н.В. Современные научные представления о факторах риска развития сердечнососудистых заболеваний (по материалам 15-го Всемирного Конгресса по кардиологии, состоявшегося 5-9 мая 2002 г. в г. Сиднее, Австралия). Кардиоваск тер профилакт 2003;2:111-7.&lt;/p&gt;&lt;p&gt;Graham I., Daly L., Refsum H. et al. Plasma homocysteine as a risk factor for vascular disease. JAMA 1997;277:1775-81.&lt;/p&gt;&lt;p&gt;Mangioni A.A., Jackson S.H.D. Homocysteine and cardiovascular disease: current evidence and future prospects. Am J Med 2002;112:556-65.&lt;/p&gt;&lt;p&gt;Landewe R.B., van den Borne B.E., Beedveld F.C., Dijkmans B.A. Methotrexate effects in patients with rheumatoid arthritis with cardiovascular comorbidity. Lancet 2000;355:1616-7.&lt;/p&gt;&lt;p&gt;Erb N., Kitas G.D. Homocysteine modulation as a reason for continuous folic acid supplementation in methotrexate-treated rheumatoid arthritis patients. Rheumatology (Oxford) 2001;40:715-6.&lt;/p&gt;&lt;p&gt;Clarke R., Daly L., Robinson K. et al. Hyperhomocysteinemia: an independent risk factor for vascular disease. N Engl J Med 1991;324:1149-55.&lt;/p&gt;&lt;p&gt;Morgan S.L., Baggott J.E., Lee J.Y., Alarcon G.S. Folic acid supplementation prevent deficient blood folate levels and hyperhomo-cysteinemia duruing longterm, low dose methoterxate therapy for rheumatoid arthritis:implications for cardiovascular disease prevention. J Rheumatol 1998;25:441-6.&lt;/p&gt;&lt;p&gt;Slot O. Changes in plasma homocysteine in arthritis patients starting treatment with low-dose methotrexate subsequently supplemented with folic acid. Scand J Rheumatol 2001;30:305-7.&lt;/p&gt;&lt;p&gt;Hoekstra M., Haagsma C.J., Doelman C.J.A., van de Laar M.A.FJ. Intermittent rises in plasma homocysteine in patients with rheumatoid arthritis treated with higher dose methotrexate. Ann Rheum Dis 2005;64:141-3.&lt;/p&gt;&lt;p&gt;Whittle S.L., Hughes R.A. Folate supplementation and methotrexate treatment rheumatoid arthritis:a review. Rheumatology 2004;43:267-71.&lt;/p&gt;&lt;p&gt;Baggott J.E., Oster R.A., Tamura T. Meta-analysis of cancer risk in folic acid supplementation trials. Cancer Epidemiol 2012;36:78-81.&lt;/p&gt;&lt;/div&gt;&lt;br /&gt;</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
