Abstracts tagged "methotrexate (MTX) and pediatrics"

Abstract Number: 2391 • 2018 ACR/ARHP Annual Meeting
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 • 2013 ACR/ARHP Annual Meeting
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…

All abstracts accepted to ACR Convergence are under media embargo once the ACR has notified presenters of their abstract’s acceptance. They may be presented at other meetings or published as manuscripts after this time but should not be discussed in non-scholarly venues or outlets. The following embargo policies are strictly enforced by the ACR.

Accepted abstracts are made available to the public online in advance of the meeting and are published in a special online supplement of our scientific journal, Arthritis & Rheumatology. Information contained in those abstracts may not be released until the abstracts appear online. In an exception to the media embargo, academic institutions, private organizations, and companies with products whose value may be influenced by information contained in an abstract may issue a press release to coincide with the availability of an ACR abstract on the ACR website. However, the ACR continues to require that information that goes beyond that contained in the abstract (e.g., discussion of the abstract done as part of editorial news coverage) is under media embargo until 10:00 AM ET on November 14, 2024. Journalists with access to embargoed information cannot release articles or editorial news coverage before this time. Editorial news coverage is considered original articles/videos developed by employed journalists to report facts, commentary, and subject matter expert quotes in a narrative form using a variety of sources (e.g., research, announcements, press releases, events, etc.).

Violation of this policy may result in the abstract being withdrawn from the meeting and other measures deemed appropriate. Authors are responsible for notifying colleagues, institutions, communications firms, and all other stakeholders related to the development or promotion of the abstract about this policy. If you have questions about the ACR abstract embargo policy, please contact ACR abstracts staff at [email protected].