PMID- 12173755 OWN - NLM STAT- MEDLINE DCOM- 20030106 LR - 20181130 IS - 0748-7711 (Print) IS - 0748-7711 (Linking) VI - 39 IP - 3 DP - 2002 May-Jun TI - Preliminary study of a genetically engineered spinal cord implant on urinary bladder after experimental spinal cord injury in rats. PG - 347-57 AB - The objective of this study was to determine the effect of neurotrophin-secreting Schwann cell implants on the urinary bladder after spinal cord contusion. One hour after severe spinal cord contusion at the T8 to T11 level, carbon filaments containing nonsecreting Schwann cells, brain-derived neurotrophic factor (BDNF)-secreting Schwann cells, neurotrophin-3 (NT-3)-secreting Schwann cells, or Schwann cells secreting both BDNF and NT-3 were implanted into the spinal cord. Untreated spinal cord injured (SCI) rats and noncontused rats (C) were also studied. Two months after spinal cord injury, cystometry was performed and the bladders were studied using light microscopy. SCI rats had significantly increased bladder mass, thickness, and smooth muscle mass compared to C rats. Bladder capacity of SCI rats and rats with spinal cord implants were both significantly greater than that of C rats. This preliminary study suggests that neurotrophin-secreting Schwann cell implants may lead to improved bladder structure after spinal cord injury. FAU - Sakamoto, Kyoko AU - Sakamoto K AD - Department of Urology, Loyola University of Chicago Medical School, Maywood, IL, USA. FAU - Uvelius, Bengt AU - Uvelius B FAU - Khan, Talat AU - Khan T FAU - Damaser, Margot S AU - Damaser MS LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. PL - United States TA - J Rehabil Res Dev JT - Journal of rehabilitation research and development JID - 8410047 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Carbon Fiber) RN - 0 (Neurotrophin 3) RN - 7440-44-0 (Carbon) SB - IM MH - Animals MH - Brain-Derived Neurotrophic Factor/*metabolism MH - Carbon MH - Carbon Fiber MH - Cell Culture Techniques/methods MH - *Disease Models, Animal MH - Female MH - Genetic Engineering/*methods MH - Implants, Experimental/*standards MH - Materials Testing MH - Neurotrophin 3/*metabolism MH - Organ Size MH - Rats MH - Rats, Sprague-Dawley MH - Schwann Cells/*metabolism/*transplantation MH - Spinal Cord Injuries/*complications MH - Thoracic Vertebrae/injuries MH - Urinary Bladder, Neurogenic/*etiology/pathology/*therapy MH - Urodynamics EDAT- 2002/08/14 10:00 MHDA- 2003/01/08 04:00 CRDT- 2002/08/14 10:00 PHST- 2002/08/14 10:00 [pubmed] PHST- 2003/01/08 04:00 [medline] PHST- 2002/08/14 10:00 [entrez] PST - ppublish SO - J Rehabil Res Dev. 2002 May-Jun;39(3):347-57.