Biomaterial Database

The effect of schedule removal on the maintenance of heroin self-injection. 1980

C Madden, and T P Oei, and G Singer

The present study investigated the effect of schedule removal on the maintenance of heroin self-injection in 80% reduced body weight Wistar rats. During the acquisition phase, 42 animals were subjected to a fixed time 1 min food delivery schedule and were allowed to self-inject either heroin or saline for 10 days. During the maintenance phase (Days 11-15), animals in both the heroin and saline conditions were randomly allocated to schedule, no schedule, and no schedule plus food groups. Infusion rates, hot plate response latencies, and food intake were used as dependent measures to monitor differences between groups. The results revealed that schedule removal disrupted, but did not extinguish, heroin-seeking behaviour.

UI	MeSH Term	Description	Entries
D008297	Male		Males
D011930	Reaction Time	The time from the onset of a stimulus until a response is observed.	Response Latency,Response Speed,Response Time,Latency, Response,Reaction Times,Response Latencies,Response Times,Speed, Response,Speeds, Response
D012055	Reinforcement Schedule	A schedule prescribing when the subject is to be reinforced or rewarded in terms of temporal interval in psychological experiments. The schedule may be continuous or intermittent.	Reinforcement Schedules,Schedule, Reinforcement,Schedules, Reinforcement
D003932	Heroin	A narcotic analgesic that may be habit-forming. It is a controlled substance (opium derivative) listed in the U.S. Code of Federal Regulations, Title 21 Parts 329.1, 1308.11 (1987). Sale is forbidden in the United States by Federal statute. (Merck Index, 11th ed)	Diacetylmorphine,Diamorphine,Diacetylmorphine Hydrochloride,Diagesil,Diamorf,Heroin Hydrochloride,Min-I-Jet Morphine Sulphate,Hydrochloride, Diacetylmorphine,Hydrochloride, Heroin,Min I Jet Morphine Sulphate
D004435	Eating	The consumption of edible substances.	Dietary Intake,Feed Intake,Food Intake,Macronutrient Intake,Micronutrient Intake,Nutrient Intake,Nutritional Intake,Ingestion,Dietary Intakes,Feed Intakes,Intake, Dietary,Intake, Feed,Intake, Food,Intake, Macronutrient,Intake, Micronutrient,Intake, Nutrient,Intake, Nutritional,Macronutrient Intakes,Micronutrient Intakes,Nutrient Intakes,Nutritional Intakes
D006556	Heroin Dependence	Strong dependence or addiction, both physiological and emotional, upon HEROIN.	Heroin Abuse,Heroin Addiction,Heroin Smoking,Abuse, Heroin,Addiction, Heroin,Dependence, Heroin,Heroin Smokings,Smoking, Heroin
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D012646	Self Administration	Administration of a drug or chemical by the individual under the direction of a physician. It includes administration clinically or experimentally, by human or animal.	Administration, Self,Administrations, Self,Self Administrations
D013997	Time Factors	Elements of limited time intervals, contributing to particular results or situations.	Time Series,Factor, Time,Time Factor