title: Expression of transforming growth factor beta1 gene, basic fibroblast growth factor gene and hydroxyproline in diabetes-induced bladder dysfunction in a rat model.
abstract: OBJECTIVE
  To investigate the content of hydroxyproline (Hyp) and the expression of transforming growth factor beta1 (TGF beta1) and basic fibroblast growth factor (bFGF) in the bladder 8 weeks after diabetes induction.
  
  
  METHODS
  Thirty wistar rats were divided into three groups: control (n = 10), streptozotocin-induced diabetic group (n = 10), TAD group (n = 10; diabetic rats were fed with Tadenan 100 mg kg(-1) day(-1)). Eight weeks later, the bladders were dissected. RT-PCR, immunohistochemistry, and ELISA were used to detect the expression of TGF beta1 and bFGF in the bladder. Also hydroxyproline (Hyp) was measured using a method based on alkaline hydrolysis.
  
  
  RESULTS
  The content of hydroxyproline in the diabetic group was greater than that of control group (P < 0.05); we found significantly increased expression of TGF beta1 mRNA and bFGF mRNA in the bladder from the diabetic group compared with the control group; immunohistochemical and ELISA studies showed a statistically significant increased expression of TGF beta1 protein and bFGF protein in the bladder from the diabetic group compared with the control group (P < 0.05). The content of hydroxyproline in TAD group was less than that of diabetic group (P < 0.05); mRNA expression of TGF beta1 and bFGF greatly decreased in TAD group compared with that of the diabetic group; immunohistochemical and ELISA studies showed decreased levels of TGF beta1 protein and bFGF protein in the bladder from TAD group compared with the diabetic group (P < 0.05).
  
  
  CONCLUSIONS
  Rats with streptozoticin-induced diabetes mellitus showed significant increase in hydroxyproline, TGF beta1 and bFGF levels in their bladders, which may be an important mechanism inducing diabetic cystopathy. Tadenan could effectively reduce hydroxyproline, TGF beta1, and bFGF levels.
authors.affiliation: Department of Urology, Qilu Hospital of Shandong University, Jinan, China.
authors.forename: Li
authors.initials: L
authors.lastname: Yongzhi
authors.forename: Shi
authors.initials: S
authors.lastname: Benkang
authors.forename: Zhang
authors.initials: Z
authors.lastname: Jianping
authors.forename: Ran
authors.initials: R
authors.lastname: Lingxia
authors.forename: Bian
authors.initials: B
authors.lastname: Wei
authors.forename: Zhu
authors.initials: Z
authors.lastname: Yaofeng
authors.forename: Zhang
authors.initials: Z
authors.lastname: Keqin
authors.forename: Vincent
authors.initials: V
authors.lastname: Laudon
mesh_terms: D000818:Animals; D003921:Diabetes Mellitus, Experimental / Q000150:complications* / Q000188:drug therapy / Q000235:genetics / Q000378:metabolism; D005233:Fatty Alcohols / Q000494:pharmacology / Q000627:therapeutic use; D016222:Fibroblast Growth Factor 2 / Q000235:genetics / Q000378:metabolism*; D006909:Hydroxyproline / Q000378:metabolism*; D008297:Male; D010936:Plant Extracts; D012333:RNA, Messenger / Q000378:metabolism; D051381:Rats; D017208:Rats, Wistar; D013997:Time Factors; D053773:Transforming Growth Factor beta1 / Q000235:genetics / Q000378:metabolism*; D015854:Up-Regulation; D001743:Urinary Bladder / Q000187:drug effects / Q000378:metabolism* / Q000473:pathology; D001745:Urinary Bladder Diseases / Q000209:etiology / Q000235:genetics / Q000378:metabolism* / Q000517:prevention & control
chemical_list: D005233:Fatty Alcohols; D010936:Plant Extracts; D012333:RNA, Messenger; C009375:Tadenan; D053773:Transforming Growth Factor beta1; D016222:Fibroblast Growth Factor 2; D006909:Hydroxyproline