Phenotypic Characterization of the Endocannabinoid-Degrading Enzyme Alpha/Beta-Hydrolase Domain 6 Knockout Rat
| Autor: | Mayuko Sakanashi, Sayomi Higa-Nakamine, Saori Nishijima, Katsuhiko Noguchi, Kimio Sugaya, Hideyuki Yamamoto, Shiho Okitsu-Sakurayama, Katsumi Kadekawa |
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| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
Male
medicine.medical_specialty Knockout rat Hydrolases Alpha (ethology) Dinoprostone Western blot In vivo Internal medicine medicine Animals Pharmacology (medical) Prostaglandin E2 Original Research Pharmacology medicine.diagnostic_test Chemistry ABHD6 Endocannabinoid system Monoacylglycerol Lipases Rats Endocrinology Phenotype Complementary and alternative medicine Hyperalgesia Female medicine.symptom medicine.drug Endocannabinoids |
| Zdroj: | Cannabis Cannabinoid Res |
| Popis: | INTRODUCTION: Alpha/beta-hydrolase domain 6 (ABHD6) is an enzyme that hydrolyzes 2-arachidonoylglycerol, a high-efficiency endogenous cannabinoid. Although the endocannabinoid system has been suggested to be involved in regulation of bladder function, the roles of ABHD6 in the control of micturition remain unknown. To elucidate the physiological and pathological roles of ABHD6 in vivo, we examined phenotypes of ABHD6 knockout rats (Abhd6(−/−)) generated by clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated proteins system. MATERIALS AND METHODS: Age-matched knockout and wild-type (WT) rats of both sexes were used. RESULTS: Expression of ABHD6, assessed by quantitative real-time polymerase chain reaction and Western blot analysis, was clearly diminished in Abhd6(−/−) rats compared with WT rats. Mutant rats had a normal appearance, and the body weight and food consumption were similar to those of WT rats. The interval between bladder contractions assessed by continuous cystometry was significantly shorter in ABHD6 knockout rats than in WT rats when the bladder was stimulated with acetic acid. Mechanical paw withdrawal thresholds measured by von Frey testing were significantly lowered in the knockout rats than in WT rats. The plasma levels of prostaglandin E(2) (PGE(2)) and the stable metabolite of PGE(2) in Abhd6(–/–) rats were twice as high as that in WT rats. CONCLUSIONS: Deletion of the ABHD6 gene in rats causes more frequent urination in the stimulated bladder and hyperalgesia to non-noxious mechanical stimuli along with increased plasma PGE(2). |
| Databáze: | OpenAIRE |
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