PMID- 19144772 OWN - NLM STAT- MEDLINE DCOM- 20090714 LR - 20121115 IS - 1521-009X (Electronic) IS - 0090-9556 (Linking) VI - 37 IP - 4 DP - 2009 Apr TI - Cannabinoid receptor agonist 13, a novel cannabinoid agonist: first in human pharmacokinetics and safety. PG - 827-33 LID - 10.1124/dmd.108.024000 [doi] AB - Cannabinoid receptor agonist 13 (CRA13) is a novel cannabinoid (CB) receptor agonist with high affinity and functional activity toward both CB(1) and CB(2) receptors. This phase I study aimed to evaluate the pharmacokinetics, safety, and tolerability of single oral doses of CRA13. Sixty-three of 69 healthy adult males were randomized in seven cohorts (n = 9) to receive 1 to 80 mg of CRA13 or placebo orally in fasted condition. To investigate the diet effect, an independent group (n = 6) was randomized to receive 40 mg of CRA13 after high-fat and high-calorie breakfast in crossover design with a 2-week washout period. Peak plasma concentration (C(max)) ranged from 7.8 to 467.6 ng/ml (1-80 mg). CRA13 was rapidly absorbed and demonstrated linear pharmacokinetics (1-80 mg). Time to reach C(max) (t(max)) was 1.5 to 2 h for all doses in both fasted and fed groups. Administration of 40 mg of CRA13 with food induced approximately 2-fold increase in the C(max) and the area under the concentration-time curve, AUC(0 - tz). The apparent elimination half-life (t(1/2)) was 21 to 36 h and 30 to 41 h for fasted and fed groups, respectively. Dizziness, headache, and nausea were the most frequently reported adverse events (AEs), predominantly at the 40- and 80-mg doses. The incidence of AEs was dose-dependent and mild to moderate. No deaths and serious adverse events were reported. In conclusion, CRA13 was reasonably well tolerated and demonstrated a linear pharmacokinetics over the studied dose range (1-80 mg). Food intake increased CRA13 C(max) and AUC(0 - tz) by approximately 2-fold, whereas t(max) was unaffected. FAU - Gardin, Anne AU - Gardin A AD - Novartis Institutes for BioMedical Research, Basel, CH-4002, Switzerland. anne.gardin@novartis.com FAU - Kucher, Klaus AU - Kucher K FAU - Kiese, Beate AU - Kiese B FAU - Appel-Dingemanse, Silke AU - Appel-Dingemanse S LA - eng PT - Clinical Trial, Phase I PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't DEP - 20090114 PL - United States TA - Drug Metab Dispos JT - Drug metabolism and disposition: the biological fate of chemicals JID - 9421550 RN - 0 (Cannabinoid Receptor Agonists) RN - 0 (Naphthalenes) RN - 0 (Placebos) RN - 0 (cannabinoid receptor agonist 13) SB - IM MH - Area Under Curve MH - *Cannabinoid Receptor Agonists MH - Cohort Studies MH - Double-Blind Method MH - Half-Life MH - Humans MH - Male MH - Naphthalenes/*adverse effects/*pharmacokinetics/pharmacology MH - Placebos EDAT- 2009/01/16 09:00 MHDA- 2009/07/15 09:00 CRDT- 2009/01/16 09:00 PHST- 2009/01/16 09:00 [entrez] PHST- 2009/01/16 09:00 [pubmed] PHST- 2009/07/15 09:00 [medline] AID - dmd.108.024000 [pii] AID - 10.1124/dmd.108.024000 [doi] PST - ppublish SO - Drug Metab Dispos. 2009 Apr;37(4):827-33. doi: 10.1124/dmd.108.024000. Epub 2009 Jan 14.