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substance

 [sub´stans]
1. physical material that has form and weight; called also matter.
2. the material constituting an organ or body.
substance Abuse and Mental Health Services Administration (SAMHSA) an agency of the United States Department of Health and Human Services, created in 1992 to oversee the quality and availability of programs for prevention, treatment, and rehabilitation of substance abuse and related mental health problems.
black substance substantia nigra.
controlled substance a psychoactive substance that is regulated under the controlled substances act. See table at drug dependence.
depressor substance
gray substance gray matter.
ground substance the gel-like material in which connective tissue cells and fibers are embedded.
substance-induced disorders a subgroup of the substance-related disorders comprising a variety of behavioral or psychological anomalies resulting from ingestion of or exposure to a drug of abuse, medication, or toxin. Included are substance intoxication, substance withdrawal, and other mental disorders such as dementia, mood disorder, and psychotic disorder when they are specifically caused by a substance. See also substance use disorders.
medullary substance
1. the white matter of the central nervous system, consisting of axons and their myelin sheaths.
2. the soft, marrow-like substance of the interior of such structures as bone, kidney, and adrenal gland.
müllerian inhibiting substance a glycoprotein produced by the Sertoli cells of the fetal testis that acts ipsilaterally in the male to suppress the müllerian ducts, consequently preventing development of the uterus and fallopian tubes, thus helping to control formation of the male phenotype.
substance P a peptide composed of 11 amino acids, present in nerve cells scattered throughout the body and in special endocrine cells in the gut; it increases the contractions of gastrointestinal smooth muscle and causes vasodilatation; it is one of the most potent vasoactive substances known, and it seems to be a sensory neurotransmitter involving pain, touch, and temperature.
perforated substance
1. anterior perforated substance, an area anterolateral to each optic tract, pierced by branches of the anterior and middle cerebral arteries.
2. posterior perforated substance, an area between the cerebral peduncles, pierced by branches of the posterior cerebral arteries.
pressor substance vasopressor (def. 2).
psychoactive substance (psychotropic substance) any chemical compound that affects the mind or mental processes, particularly a drug used therapeutically in psychiatry, or any of various other types of mind-altering substances such as drugs of abuse and some toxins. See also table at drug dependence. Called also psychoactive agent or drug and psychotropic agent or drug.



There are several different classes of psychoactive substances: antidepressants are used for the relief of symptoms of major depression. lithium is the most common agent used to treat manic episodes of bipolar disorder. antipsychotic agents (or major tranquilizers) are used for management of the manifestations of psychotic disorders such as schizophrenia. antianxiety agents (called also minor tranquilizers), such as diazepam (Valium), are used for relief of anxiety disorders. While none of these drugs can effect a cure, they can reduce the severity of symptoms and permit the patient to resume more normal activity.

Also included in the category of psychotropic drugs are many other substances that affect the mind but are not used to treat mental disorders, including stimulants such as caffeine, amphetamines, and cocaine; opiates; and hallucinogens.
substance-related disorders any of the mental disorders associated with excessive use of or exposure to psychoactive substances, including drugs of abuse, medications, and toxins. The group is divided into substance use disorders and substance-induced disorders, each of which is specified on the basis of etiology, such as alcohol use disorders. See also drug abuse and drug dependence.
slow-reacting substance of anaphylaxis SRS-A, an inflammatory agent released by mast cells in the anaphylactic reaction. It induces slow, prolonged contraction of certain smooth muscles and is an important mediator of allergic bronchial asthma.
threshold s's those substances in the blood, such as glucose, that are excreted when they reach their renal threshold.
transmitter substance neurotransmitter.
substance use disorders a subgroup of the substance-related disorders, in which psychoactive substance use or abuse repeatedly results in significantly adverse consequences. The group comprises substance abuse (see drug abuse) and substance dependence (see drug dependence); specific disorders or groups of disorders are named on the basis of etiology, e.g., alcohol use disorders, alcohol abuse, and alcohol dependence.
white substance white matter.

SAMHSA

References in periodicals archive ?
To view and download copies of the national or any state Behavioral Health Barometer, visit the SAMHSA web site at http://1.
And then, I can't say enough good things about SAMHSA staff's response to Hurricane Katrina.
The AMA and SAMHSA has sent out joint letters to county and state medical societies encouraging them to disseminate the information about the program.
We look forward to significantly expanding our relationship with SAMHSA.
As part of the launch activities, SAMHSA will premiere the Awareness Day virtual event today at 3 p.
Privacy Subcommittee Chair, National Committee for Vital and Health Statistics; several senior officials from SAMHSA and SATVA; data and informatics experts from the National Association of State Mental Health Program Directors, the National Association of State Alcoholism and Drug Abuse Directors, and the Veterans Administration Healthcare System; and other national informatics experts.
WHAT: SAMHSA presents National Children's Mental Health Awareness Day 2013 press briefing
Richard Steinberg, CEO and President of WestCare is President of Therapeutic Communities of America and a former member of the National Advisory Council of SAMHSA, Center for Substance Abuse Treatment.
The toll-free Oil Spill Distress Helpline, funded by SAMHSA, links callers to local crisis centers, where local and trained professionals answer the calls and provide confidential assistance.
We believe that this grant from the Center for Substance Abuse Prevention at SAMHSA will give us the opportunity to change that.
SAMHSA and DOJ are committed to building on the success of treatment drug courts by bolstering their ability to provide essential alcohol and drug treatment, recovery support, screening, assessment, case management, and program coordination services to thousands of people working to free themselves from lives of substance abuse and crime," said SAMHSA Administrator Pamela S.
To help address this problem and as part of Mental Health Awareness Month, SAMHSA and The Advertising Council today launched a new series of national public service announcements (PSAs) designed to encourage, educate and inspire young adults (18-25 years old) to step up and support friends and family they know are experiencing a mental health problem.