|
|
||||||||
University of Vermont College of Medicine, Departments of Neurology and Anatomy and Neurobiology, Burlington, Vermont 05405
These
studies examined Fos protein expression in spinal cord neurons
synaptically activated by stimulation of bladder afferent pathways
after cyclophosphamide (CYP)-induced bladder inflammation. In
urethan-anesthetized Wistar rats with cystitis, intravesical saline
distension significantly (P
0.0005) increased the number of
Fos-immunoreactive (IR) cells observed in the rostral lumbar (L1, 35 cells/section; L2, 27 cells/section) and caudal lumbosacral (L6, 120 cells/section; S1, 96 cells/section) spinal cord compared with control
animals, but Fos protein expression in the L5 segment was not altered.
The topographical distribution of Fos-IR cells was also altered in the
lumbosacral spinal cord. The majority of Fos-IR cells were distributed
in the dorsal commissure (45%), with smaller percentages in the sacral
parasympathetic nucleus (25%), medial dorsal horn (20%), and lateral
dorsal horn (10%). These results demonstrate that urinary bladder
distension produces increased numbers and an altered distribution
pattern of Fos-IR cells after cystitis. This altered distribution
pattern resembles that following noxious irritation of the bladder in
control animals. Pretreatment with capsaicin significantly reduced the
number of Fos-IR cells induced by bladder distension after cystitis.
These data suggest that chronic cystitis can reveal a nociceptive Fos expression pattern in the spinal cord in response to a non-noxious bladder stimulus that is partially mediated by capasaicin-sensitive bladder afferents.
interstitial cystitis; allodynia; sacral parasympathetic nucleus; spinal cord; capsaicin; choline acetyltransferase
This article has been cited by other articles:
![]() |
B. P. Cheppudira, B. M. Girard, S. E. Malley, K. C. Schutz, V. May, and M. A. Vizzard Upregulation of vascular endothelial growth factor isoform VEGF-164 and receptors (VEGFR-2, Npn-1, and Npn-2) in rats with cyclophosphamide-induced cystitis Am J Physiol Renal Physiol, September 1, 2008; 295(3): F826 - F836. [Abstract] [Full Text] [PDF] |
||||
![]() |
D. Daly, W. Rong, R. Chess-Williams, C. Chapple, and D. Grundy Bladder afferent sensitivity in wild-type and TRPV1 knockout mice J. Physiol., September 1, 2007; 583(2): 663 - 674. [Abstract] [Full Text] [PDF] |
||||
![]() |
K. A. Corrow and M. A. Vizzard Phosphorylation of extracellular signal-regulated kinases in urinary bladder in rats with cyclophosphamide-induced cystitis Am J Physiol Regulatory Integrative Comp Physiol, July 1, 2007; 293(1): R125 - R134. [Abstract] [Full Text] [PDF] |
||||
![]() |
K. Bielefeldt, K. Lamb, and G. F. Gebhart Convergence of sensory pathways in the development of somatic and visceral hypersensitivity Am J Physiol Gastrointest Liver Physiol, October 1, 2006; 291(4): G658 - G665. [Abstract] [Full Text] [PDF] |
||||
![]() |
J. LaBerge, S. E. Malley, K. Zvarova, and M. A. Vizzard Expression of corticotropin-releasing factor and CRF receptors in micturition pathways after cyclophosphamide-induced cystitis Am J Physiol Regulatory Integrative Comp Physiol, September 1, 2006; 291(3): R692 - R703. [Abstract] [Full Text] [PDF] |
||||
![]() |
B. Chopra, S. R Barrick, S. Meyers, J. M Beckel, M. L Zeidel, A. P. D. W Ford, W. C de Groat, and L. A Birder Expression and function of bradykinin B1 and B2 receptors in normal and inflamed rat urinary bladder urothelium J. Physiol., February 1, 2005; 562(3): 859 - 871. [Abstract] [Full Text] [PDF] |
||||
![]() |
P. Dinis, A. Charrua, A. Avelino, M. Yaqoob, S. Bevan, I. Nagy, and F. Cruz Anandamide-Evoked Activation of Vanilloid Receptor 1 Contributes to the Development of Bladder Hyperreflexia and Nociceptive Transmission to Spinal Dorsal Horn Neurons in Cystitis J. Neurosci., December 15, 2004; 24(50): 11253 - 11263. [Abstract] [Full Text] [PDF] |
||||
![]() |
C. Qin, B. Greenwood-Van Meerveld, and R. D. Foreman Spinal Neuronal Responses to Urinary Bladder Stimulation in Rats With Corticosterone or Aldosterone Onto the Amygdala J Neurophysiol, October 1, 2003; 90(4): 2180 - 2189. [Abstract] [Full Text] [PDF] |
||||
![]() |
M. R. Saban, N.-B. Nguyen, T. G. Hammond, and R. Saban Gene Expression Profiling of Mouse Bladder Inflammatory Responses to LPS, Substance P, and Antigen-Stimulation Am. J. Pathol., June 1, 2002; 160(6): 2095 - 2110. [Abstract] [Full Text] [PDF] |
||||
![]() |
M. A. Vizzard Increased expression of spinal cord Fos protein induced by bladder stimulation after spinal cord injury Am J Physiol Regulatory Integrative Comp Physiol, July 1, 2000; 279(1): R295 - R305. [Abstract] [Full Text] [PDF] |
||||
![]() |
M. R. Saban, R. Saban, T. G. Hammond, M. Haak-Frendscho, H. Steinberg, M. W. Tengowski, and D. E. Bjorling LPS-sensory peptide communication in experimental cystitis Am J Physiol Renal Physiol, February 1, 2002; 282(2): F202 - F210. [Abstract] [Full Text] [PDF] |
||||
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
| Visit Other APS Journals Online |