Incorporation of drugs for the treatment of substance abuse into pigmented and nonpigmented hair.
Incorporation of drugs for the treatment of substance abuse into pigmented and nonpigmented hair.
复制标题
将用于治疗药物滥用的药物掺入有色和无色头发中。
DOI:
10.1021/js970360t
复制
发表时间:
1998
期刊:
影响因子:
--
通讯作者:
Rollins,DE
中科院分区:
文献类型:
--
作者:
Wilkins,DG;Valdez,AS;Nagasawa,PR;Gygi,SP;Rollins,DE
Hair analysis for drugs may be useful for the long‐term monitoring of recidivism and treatment compliance.L‐α‐Acetylmeth‐adol, buprenorphine, and methadone are drugs that are used for the treatment of substance abuse. The purpose of this study was to study the relationship between dose, plasma concentration, hair concentration, and hair pigmentation for these compounds and their major metabolites in an animal model. Male Long‐Evans rats received eitherL‐α‐acetylmethadol (1 and 3 mg/kg;n= 6), buprenorphine (1 and 3 mg/kg;n= 5), or methadone (4 and 8 mg/kg;n= 5) by intraperitoneal injection daily for 5 days. Fourteen days after beginning drug administration, newly grown hair was collected and analyzed for eitherL‐α‐acetylmethadol and two metabolites (L‐α‐acetyl‐N‐normeth‐adol andL‐α‐acetyl‐N,N‐dinormethadol), methadone and two metabo‐lites (D,L‐2‐ethyl‐1,5‐dimethyl‐3,3‐diphenylpyrrolinium andD,L‐2‐ethyl‐5‐methyl‐3,3‐diphenyl‐1‐pyrroline), or buprenorphine and one metabolite (norbuprenorphine). The plasma time course (AUC) for each compound was also determined after a single administration of each drug at the specified doses. There was an approximate dose‐dependent increase in measured hair concentration of each parent drug in pigmented hair. The concentrations ofL‐α‐acetylmethadol, methadone, and buprenorphine in nonpigmented hair were significantly less than that measured in pigmented hair at either the high or low dose. The metabolitesL‐α‐acetyl‐N‐normethadol andD,L‐2‐ethyl‐1,5‐dimethyl‐3,3‐diphenylpyrrolinium were detected at lower concentrations than their respective parent compounds (L‐α‐acetylmethadol or methadone) in pigmented hair. However, theL‐α‐acetyl‐N,N‐di‐normethadol metabolite concentrations in pigmented hair were significantly greater than those of the parent drug after either the low or the highL‐α‐acetylmethadol dose. These data demonstrate thatL‐α‐acetylmethadol, methadone, buprenorphine, and metabolites are distributed into hair in a dose‐related manner with a preference for pigmented hair.