title: High expression of platelet-derived growth factor and transforming growth factor-beta 1 in blast cells from patients with Down Syndrome suffering from transient myeloproliferative disorder and organ fibrosis.
abstract: To determine whether platelet-derived growth factor (PDGF) and transforming growth factor-beta 1 (TGF-beta 1) are involved in organ fibrosis in patients with transient myeloproliferative disorder (TMD) in Down syndrome, the expression of PDGF and TGF-beta 1 mRNA in blast cells of TMD was investigated using real-time quantitative reverse transcription polymerase chain reaction. Blasts and liver tissue from TMD patients with hepatic fibrosis showed a significantly elevated expression of PDGF gene. The expression of TGF-beta 1 gene was higher in TMD and acute megakaryoblastic leukaemia than in the control group. These results suggest that PDGF in combination with TGF-beta 1 plays a role in organ fibrosis of TMD.
authors.affiliation: Department of Paediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan. hhattori@nk-cc.go.jp
authors.forename: H
authors.initials: H
authors.lastname: Hattori
authors.forename: A
authors.initials: A
authors.lastname: Matsuzaki
authors.forename: A
authors.initials: A
authors.lastname: Suminoe
authors.forename: K
authors.initials: K
authors.lastname: Ihara
authors.forename: H
authors.initials: H
authors.lastname: Nakayama
authors.forename: T
authors.initials: T
authors.lastname: Hara
mesh_terms: D000293:Adolescent; D000328:Adult; D004314:Down Syndrome / Q000378:metabolism*; D005260:Female; D015870:Gene Expression; D006801:Humans; D007947:Leukemia, Megakaryoblastic, Acute / Q000378:metabolism; D008103:Liver Cirrhosis / Q000378:metabolism*; D008297:Male; D009196:Myeloproliferative Disorders / Q000378:metabolism*; D010982:Platelet-Derived Growth Factor / Q000235:genetics / Q000378:metabolism*; D012333:RNA, Messenger / Q000235:genetics; D016212:Transforming Growth Factor beta / Q000235:genetics / Q000378:metabolism*; D053773:Transforming Growth Factor beta1
chemical_list: D010982:Platelet-Derived Growth Factor; D012333:RNA, Messenger; C508960:TGFB1 protein, human; D016212:Transforming Growth Factor beta; D053773:Transforming Growth Factor beta1