Effects of topical ropivacaine on eicosanoids and neurotransmitters in the rectum of patients with distal ulcerative colitis
Research output: Contribution to journal › Journal article › Research › peer-review
Standard
Effects of topical ropivacaine on eicosanoids and neurotransmitters in the rectum of patients with distal ulcerative colitis. / Hillingsø, J G; Kjeldsen, J; Schmidt, P T; Rasmussen, T N; Fisher-Hansen, B; Holst, Jens Juul; Lauristen, K; Bukhave, K; Rask-Madsen, J.
In: Scandinavian Journal of Gastroenterology, Vol. 37, No. 3, 03.2002, p. 325-9.Research output: Contribution to journal › Journal article › Research › peer-review
Harvard
APA
Vancouver
Author
Bibtex
}
RIS
TY - JOUR
T1 - Effects of topical ropivacaine on eicosanoids and neurotransmitters in the rectum of patients with distal ulcerative colitis
AU - Hillingsø, J G
AU - Kjeldsen, J
AU - Schmidt, P T
AU - Rasmussen, T N
AU - Fisher-Hansen, B
AU - Holst, Jens Juul
AU - Lauristen, K
AU - Bukhave, K
AU - Rask-Madsen, J
PY - 2002/3
Y1 - 2002/3
N2 - BACKGROUND: Topical administration of lidocaine has been suggested to have beneficial clinical effects in patients with active ulcerative colitis, but the mechanism of action, if any, remains obscure. As local anaesthetics may exert anti-inflammatory actions through their inhibition of nervous reflexes, we have studied the local effects of a single rectal dose of ropivacaine gel on rectal concentrations of eicosanoids and neurotransmittors in patients with relapsing ulcerative colitis.METHODS: In a randomized, double-blind, placebo-controlled study, concentrations of leukotriene B4, thromboxane B2 and prostaglandin E2 in rectal dialysates and concentrations of substance P, neurokinin A, somatostatin, vasoactive intestinal polypeptide and calcitonin gene-related peptide in rectal biopsies from 19 patients with active, distally located, ulcerative colitis were measured before and after rectal administration of a 200-mg dose of ropivacaine- or placebo-gel by use of radioimmunoassays. For comparison with normal conditions, concentrations of neuropeptides were measured in another 19 patients with relapsing ulcerative colitis and 14 controls with non-inflamed colon.RESULTS: No significant changes in concentrations of eicosanoids or neuropeptides were observed after ropivacaine or placebo administration. Baseline concentrations of all neuropeptides, except somatostatin, were significantly lower in active ulcerative colitis than in controls with non-inflamed colon.CONCLUSIONS: These findings reveal no evidence of anti-inflammatory actions by ropivacaine in active ulcerative colitis and thus provide no rationale for topical treatment with local anaesthetics.
AB - BACKGROUND: Topical administration of lidocaine has been suggested to have beneficial clinical effects in patients with active ulcerative colitis, but the mechanism of action, if any, remains obscure. As local anaesthetics may exert anti-inflammatory actions through their inhibition of nervous reflexes, we have studied the local effects of a single rectal dose of ropivacaine gel on rectal concentrations of eicosanoids and neurotransmittors in patients with relapsing ulcerative colitis.METHODS: In a randomized, double-blind, placebo-controlled study, concentrations of leukotriene B4, thromboxane B2 and prostaglandin E2 in rectal dialysates and concentrations of substance P, neurokinin A, somatostatin, vasoactive intestinal polypeptide and calcitonin gene-related peptide in rectal biopsies from 19 patients with active, distally located, ulcerative colitis were measured before and after rectal administration of a 200-mg dose of ropivacaine- or placebo-gel by use of radioimmunoassays. For comparison with normal conditions, concentrations of neuropeptides were measured in another 19 patients with relapsing ulcerative colitis and 14 controls with non-inflamed colon.RESULTS: No significant changes in concentrations of eicosanoids or neuropeptides were observed after ropivacaine or placebo administration. Baseline concentrations of all neuropeptides, except somatostatin, were significantly lower in active ulcerative colitis than in controls with non-inflamed colon.CONCLUSIONS: These findings reveal no evidence of anti-inflammatory actions by ropivacaine in active ulcerative colitis and thus provide no rationale for topical treatment with local anaesthetics.
KW - Administration, Rectal
KW - Adult
KW - Aged
KW - Aged, 80 and over
KW - Amides
KW - Analysis of Variance
KW - Anesthetics, Local
KW - Biopsy, Needle
KW - Colitis, Ulcerative
KW - Double-Blind Method
KW - Eicosanoids
KW - Female
KW - Humans
KW - Intestinal Mucosa
KW - Male
KW - Middle Aged
KW - Neuropeptides
KW - Probability
KW - Rectum
KW - Reference Values
KW - Statistics, Nonparametric
KW - Treatment Outcome
M3 - Journal article
C2 - 11916195
VL - 37
SP - 325
EP - 329
JO - Scandinavian Journal of Gastroenterology
JF - Scandinavian Journal of Gastroenterology
SN - 0036-5521
IS - 3
ER -
ID: 132056610