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Abstracts tagged "methotrexate (MTX) and pediatrics"

  • Abstract Number: 2391 • ACR/ARHP Annual Meeting 2018

    Methotrexate Polyglutamates As an Evaluation Tool for Appropriate Dosage of Oral Methotrexate Administration in Pediatric Patients

    Nami Okamoto1, Kosuke Shabana2, Yasuo Nakagishi3, Kenichi Nishimura4, Mao Mizuta5, Yuka Okura6, Masaki Shimizu5, Hiroyuki Wakiguchi7, Junko Yasumura8 and Masaaki Mori9, 1Pediatrics, Osaka Medical College, Takatsuki, Japan, 2Department of Pediatrics, Osaka Medical College, Takatsuki, Japan, 3Department of Pediatric Rheumatology, Hyogo Prefectural Kobe Children’s Hospital, Kobe, Japan, 4Department of Pediatrics, Yokohama City University Graduate School of Medicine, Yokohama, Japan, 5Department of Pediatrics, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan, 6Department of Pediatrics, KKR Sapporo Medical Center, Sapporo, Japan, 7Department of Pediatrics, Yamaguchi University Graduate School of Medicine, Ube, Japan, 8Department of Pediatrics, Hiroshima University Graduate School of Biomedical & Health Sciences, Hiroshima, Japan, 9Department of Lifetime Clinical Immunology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan

    Background/Purpose: Since MTX metabolism varies depending on age and dosage, we need to know optimal MTX administration method in children. We performed multi-center prospective study…
  • Abstract Number: 2207 • ACR/ARHP Annual Meeting 2013

    Plasma Cytokine Concentrations Are Associated With Folate Perturbations and Methotrexate Polyglutamate Accumulation In The Peripheral Blood Of Juvenile Idiopathic Arthritis Patients Treated With Low-Dose Methotrexate

    Ryan S. Funk1, Leon van Haandel1, Marcia Chan2, Lanny J. Rosenwasser2, Andrew Lasky3, Maria F. Ibarra4, Mark F. Hoeltzel5, J.S. Leeder1 and Mara L Becker6, 1Clinical Pharmacology and Medical Toxicology, Children's Mercy Hospital, Kansas City, MO, 2Pediatric Immunology Research, Children's Mercy Hospital, Kansas City, MO, 3Pediatrics Rheumatology, Children's Mercy Hospital, Kansas City, MO, 4Pediatric Rheumatolgy, Children's Mercy Hospital, Kansas City, MO, 5Rheumatology Section, Children's Mercy Hospital, Kansas City, MO, 6Clinical Pharmacology and Rheumatology, Children's Mercy Hospital, Kansas City, MO

    Background/Purpose: Methotrexate inhibits the production of inflammatory cytokines, but is also an antifolate.  The activity of MTX is thought to depend on the formation of…

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