PMID- 24499493 OWN - NLM STAT- MEDLINE DCOM- 20141017 LR - 20140206 IS - 1463-1318 (Electronic) IS - 1462-8910 (Linking) VI - 16 Suppl 1 DP - 2014 Mar TI - Randomised clinical trial: study of escalating doses of NRL001 given in rectal suppositories of different weights. PG - 16-26 LID - 10.1111/codi.12542 [doi] AB - AIMS: The application of alpha-adrenoceptor agonists can improve faecal incontinence symptoms. The aim of this study was to investigate the pharmacokinetic and systemic effects of NRL001 administered as different strengths in 1 or 2 g suppositories. METHODS: This randomised, double-blind, placebo controlled study included 48 healthy subjects. Group 1 consisted of two cohorts of 12 subjects administered either four single doses of 1 or 2 g rectal suppository with either 5, 7.5 or 10 mg NRL001, or matching placebo. Group 2 consisted of two cohorts of 12 subjects administered either four single doses of 1 or 2 g rectal suppository with either 10, 12.5 or 15 mg NRL001, or matching placebo. Doses were given in an escalating manner with placebo at a random position within the sequence. RESULTS: Tmax was at ~4.5 h post-dose for all NRL001 doses. Median AUC0-tz , AUC0-infinity and Cmax increased with increasing dose for both suppository sizes. The estimate of ratios of geometric means comparing 2 g with 1 g suppository, and regression analysis for dose proportionality, was close to 1 for the variables AUC0-tz , AUC0-infinity and Cmax (P > 0.05). For both suppository sizes, 20-min mean pulse rate was significantly decreased compared with placebo with all doses (P < 0.05). Blood pressure decreased overall. There were 144 adverse events (AEs) and no serious AEs reported during the study. All AEs were mild in severity. CONCLUSIONS: The regression analysis concluded that the doses were dose proportional. CI - Colorectal Disease (c) 2014 The Association of Coloproctology of Great Britain and Ireland. FAU - Bell, D AU - Bell D AD - Bio-Kinetic Europe Limited, Belfast, UK. FAU - Pediconi, C AU - Pediconi C FAU - Jacobs, A AU - Jacobs A LA - eng SI - ClinicalTrials.gov/NCT00850590 PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't PL - England TA - Colorectal Dis JT - Colorectal disease : the official journal of the Association of Coloproctology of Great Britain and Ireland JID - 100883611 RN - 0 (Adrenergic alpha-1 Receptor Agonists) RN - 0 (Suppositories) RN - HUQ1KC1YLI (Methoxamine) SB - IM MH - Adolescent MH - Adrenergic alpha-1 Receptor Agonists/*administration & dosage/adverse effects/pharmacokinetics/pharmacology MH - Adult MH - Double-Blind Method MH - Fecal Incontinence/drug therapy MH - Female MH - Humans MH - Male MH - Methoxamine/*administration & dosage/adverse effects/pharmacokinetics/pharmacology MH - Middle Aged MH - Suppositories/*administration & dosage/adverse effects/pharmacokinetics/pharmacology OTO - NOTNLM OT - Faecal incontinence OT - adrenergic alpha-agonists OT - methoxamine hydrochloride OT - rectal suppositories EDAT- 2014/02/07 06:00 MHDA- 2014/10/18 06:00 CRDT- 2014/02/07 06:00 PHST- 2013/10/02 00:00 [received] PHST- 2013/12/29 00:00 [accepted] PHST- 2014/02/07 06:00 [entrez] PHST- 2014/02/07 06:00 [pubmed] PHST- 2014/10/18 06:00 [medline] AID - 10.1111/codi.12542 [doi] PST - ppublish SO - Colorectal Dis. 2014 Mar;16 Suppl 1:16-26. doi: 10.1111/codi.12542.