title: A time course study about gene expression of post-thermal injury with DNA microarray.
abstract: BACKGROUND
  Burn injury is one of the most common and devastating forms of trauma in daily life. However, the exact sequence of events after burn injury remains unknown.
  
  
  OBJECTIVE
  This study aims to investigate gene expression alterations after burn injury.
  
  
  METHODS
  Microarray data set GSE8056 was downloaded from the Gene Expression Omnibus (GEO) database, including 12 samples, equally distributed in four groups: normal skin tissue as control and damaged tissues 1-3 days after burn (early period); 4-7 days after burn (middle period); and more than 7 days after burn (late period). Packages in R language were utilized to pre-process the data and filter out the differentially expressed genes (DEGs). Functional annotation of all three groups of DEGs was conducted by using clusters of orthologous groups analysis. The DEGs shared by all three groups were picked out and analyzed with STRING to set up a protein-protein interaction network. CFinder was chosen to implement module analysis, and expression analysis systematic explorer was then adopted to reveal the dysfunctional pathways for each module.
  
  
  RESULTS
  A total of 727, 782, and 445 DEGs were identified in the early, middle, and late period after burn, and 234 DEGs were identified as continually differentially expressed throughout all time periods, including genes encoding proinflammatory cytokines, such as interleukin (IL)-6, IL-8, and IL-1β, and genes associated with cell proliferation. Three modules associated with cell proliferation and inflammatory responses were generated from the protein-protein interaction network.
  
  
  CONCLUSIONS
  Our findings are beneficial for understanding the progression of the wound healing response after burn.
authors: Department of Anesthesiology, General Hospital of Chengdu Military Command, Chengdu, Sichuan.|Department of Neurosurgery, General Hospital of Chengdu Military Command, Chengdu, Sichuan.
authors: Shan
authors: S
authors: Ou
authors: Department 8, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing, China.
authors: Guo-Dong
authors: GD
authors: Liu
authors: Office of Scientific Research and Training Administration, General Hospital of Chengdu Military Command, Chengdu, Sichuan.
authors: Yan
authors: Y
authors: Tan
authors: Department of Anesthesiology, General Hospital of Chengdu Military Command, Chengdu, Sichuan.
authors: Le-Shun
authors: LS
authors: Zhou
authors: Department of Anesthesiology, General Hospital of Chengdu Military Command, Chengdu, Sichuan.
authors: Shu-Rong
authors: SR
authors: Bai
authors: Department of Burns and Plastic Surgery, General Hospital of Chengdu Military Command, Chengdu, Sichuan.
authors: Gang
authors: G
authors: Xue
authors: Department of Anesthesiology, General Hospital of Chengdu Military Command, Chengdu, Sichuan.
authors: Jun
authors: J
authors: Li
authors: Department of Burns and Plastic Surgery, General Hospital of Chengdu Military Command, Chengdu, Sichuan.
authors: Yong
authors: Y
authors: Yang
authors: Department of Anesthesiology, Southwest Hospital, Third Military Medical University, Chongqing, China.
authors: Jian
authors: J
authors: Cui
authors: Department of Neurosurgery, General Hospital of Chengdu Military Command, Chengdu, Sichuan.
authors: Jing-Min
authors: JM
authors: Cheng
authors: Department of Neurosurgery, General Hospital of Chengdu Military Command, Chengdu, Sichuan.
authors: Jian-Wen
authors: JW
authors: Gu
mesh_terms: D002056:Burns / Q000235:genetics*; D049109:Cell Proliferation / Q000235:genetics; D016207:Cytokines / Q000235:genetics; D005260:Female; D020869:Gene Expression Profiling; D006801:Humans; D007249:Inflammation / Q000235:genetics; D008297:Male; D020411:Oligonucleotide Array Sequence Analysis; D060066:Protein Interaction Maps; D012867:Skin / Q000737:chemistry; D012879:Skin Physiological Phenomena / Q000235:genetics; D013997:Time Factors; D014945:Wound Healing / Q000235:genetics*
chemical_list: D016207:Cytokines