title: Temporal and spatial distribution of the aquaporin 1 in spinal cord and dorsal root ganglia after traumatic injuries of the sciatic nerve.
abstract: OBJECTIVE
  The aquaporin family comprises a large family of integral membrane proteins that enable the movement of water and other small, neutral solutes across plasma membranes. Although function and mechanism of aquaporins in central nervous system injury have been reported, the pathophysiologic role of aquaporin 1 (AQP1) in peripheral nerve has not been extensively documented. In the present study, we aimed to study the temporal and spatial distribution of AQP1 in spinal cord and dorsal root ganglia after sciatic nerve injury.
  
  
  METHODS
  Forty-eight adult female mice were randomly divided into four groups (intact controls, sham operated, cut injury, and crush injury). Animals receiving cut or crush injuries were sacrificed at the 2nd, 24th, and 48th postoperative hours. Spinal cord samples at the level of lumbosacral intumescences and corresponding dorsal root ganglia on the experimental and contralateral side were dissected free and proceeded to AQP1 immunohistochemistry.
  
  
  RESULTS
  Our quantitative estimations revealed that a sharp increase in AQP1 immunoreactivity at the 24th postoperative hour was observed. This sharp increase was no more evident at 48 h after sciatic nerve injury. Identical peak was observed after both cut and crush injuries.
  
  
  CONCLUSIONS
  We demonstrated that there was a temporal relationship with an increased expression of AQP1 following injury sustained to the sciatic nerve that was significantly observed in dorsal root ganglia and spinal cord. Those expressions were also subsided over time.
authors.affiliation: Department of Anatomy, Akdeniz University Faculty of Medicine, Antalya, 07070, Turkey.
authors.forename: Yasemin
authors.initials: Y
authors.lastname: Kaya
authors.forename: Umut
authors.initials: U
authors.lastname: Ozsoy
authors.forename: Necdet
authors.initials: N
authors.lastname: Demir
authors.forename: Arzu
authors.initials: A
authors.lastname: Hizay
authors.forename: L Bikem
authors.initials: LB
authors.lastname: Suzen
authors.forename: Doychin N
authors.initials: DN
authors.lastname: Angelov
authors.forename: Levent
authors.initials: L
authors.lastname: Sarikcioglu
mesh_terms: D000818:Animals; D051398:Aquaporin 1 / Q000378:metabolism*; D002232:Carbocyanines; D004195:Disease Models, Animal; D005260:Female; D005727:Ganglia, Spinal / Q000378:metabolism*; D005786:Gene Expression Regulation / Q000502:physiology*; D007091:Image Processing, Computer-Assisted; D051379:Mice; D008807:Mice, Inbred BALB C; D020426:Sciatic Neuropathy / Q000473:pathology*; D013116:Spinal Cord / Q000378:metabolism*; D013997:Time Factors
chemical_list: C496021:Aqp1 protein, mouse; D002232:Carbocyanines; C089187:cyanine dye 3; D051398:Aquaporin 1