title: Gene expression profile comparison in the penile tissue of diabetes and cavernous nerve injury-induced erectile dysfunction rat model.
abstract: To investigate the effects of cavernous nerve injury (CNI) on gene expression profiles in the cavernosal tissue of a CNI-induced erectile dysfunction (ED) model and to provide a basis for future investigations to discover potential target genes for ED treatment.
  
  
  
  Young adult rats were divided randomly into 2 groups: sham operation and bilateral CN resection. At 12 weeks after CNI we measured erectile responses and performed microarray experiments and gene set enrichment analysis to reveal gene signatures that were enriched in the CNI-induced ED model. Alterations in gene signatures were compared with those in the diabetes-induced ED model. The diabetic-induced ED data is taken from GSE2457.
  
  
  
  The mean ratio of intracavernosal pressure/blood pressure for the CNI group (0.54±0.4 cmH2O) was significantly lower than that in the sham operation group (0.73±0.8 cmH2O, p<0.05). Supervised and unsupervised clustering analysis showed that the diabetes- and CNI-induced ED cavernous tissues had different gene expression profiles from normal cavernous tissues. We identified 46 genes that were upregulated and 77 genes that were downregulated in both the CNI- and diabetes-induced ED models.
  
  
  
  Our genome-wide and computational studies provide the groundwork for understanding complex mechanisms and molecular signature changes in ED.
authors.affiliation: Department of Urology, Gyeongsang National University Changwon Hospital, Gyeongsang National University School of Medicine, Changwon, Korea.
authors.forename: Sung Chul
authors.initials: SC
authors.lastname: Kam
authors.affiliation: Department of Biochemistry, University of Utah School of Medicine, Salt Lake City, UT, USA.
authors.forename: Sang Hoon
authors.initials: SH
authors.lastname: Lee
authors.affiliation: Department of Physiology and Biomedical Sciences, Seoul National University College of Medicine, Institute of Human-Environment Interface Biology, Seoul National University, Seoul, Korea.
authors.forename: Ju Hong
authors.initials: JH
authors.lastname: Jeon
authors.affiliation: Department of Physiology and Biophysics, Seoul National University College of Medicine, Seoul, Korea.
authors.forename: Insuk
authors.initials: I
authors.lastname: So
authors.affiliation: Department of Urology, Samsung Medical Center, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Seoul, Korea.
authors.forename: Mee Ree
authors.initials: MR
authors.lastname: Chae
authors.affiliation: Department of Urology, Chonbuk National University Medical School, Institute for Medical Sciences, Chonbuk National University, Research Institute and Clinical Trial Center of Medical Device of Chonbuk National University Hospital, Jeonju, Korea.
authors.forename: Jong Kwan
authors.initials: JK
authors.lastname: Park
authors.affiliation: Department of Urology, Samsung Medical Center, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Seoul, Korea.
authors.forename: Sung Won
authors.initials: SW
authors.lastname: Lee
mesh_terms: D000818:Animals; D016000:Cluster Analysis; D003921:Diabetes Mellitus, Experimental / Q000150:complications / Q000235:genetics* / Q000378:metabolism; D015536:Down-Regulation / Q000502:physiology; D007172:Erectile Dysfunction / Q000209:etiology / Q000235:genetics* / Q000378:metabolism; D020869:Gene Expression Profiling / Q000379:methods; D055106:Genome-Wide Association Study; D008297:Male; D010410:Penile Erection / Q000235:genetics / Q000502:physiology; D010413:Penis / Q000294:innervation / Q000378:metabolism*; D059348:Peripheral Nerve Injuries / Q000150:complications / Q000235:genetics* / Q000378:metabolism; D059467:Transcriptome; D015854:Up-Regulation / Q000502:physiology
keywords: Erectile dysfunction; Gene expression; Microarray analysis; Peripheral nerve injuries