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Enhanced hypothalamic-pituitary-adrenocortical axis responses to physostigmine in normal aging. 1995

E R Peskind, and M A Raskind, and D Wingerson, and M Pascualy, and L J Thal, and D J Dobie, and R C Veith, and D M Dorsa, and S Murray, and C Sikkema
Geriatric Research, Education and Clinical Center, Seattle, Veterans Affairs Medical Center.

BACKGROUND The purpose of this study was to determine the effects of normal human aging on the hypothalamic-pituitary-adrenocortical (HPA) axis response to the centrally active cholinesterase inhibitor physostigmine. This drug stimulates the HPA axis at a suprapituitary level by increasing central nervous system (CNS) cholinergic activity. METHODS Plasma ACTH, beta-endorphin (beta E) and cortisol responses to a 10-minute infusion of physostigmine (.0125 mg/kg) were compared between groups of 10 normal older subjects (71 +/- 2 years [mean +/- SEM]) and 9 normal young subjects (27 +/- 2 years). Plasma physostigmine concentrations were measured to assess the comparability of the pharmacologic stimulus between groups. RESULTS Endocrine responses were substantially greater in older subjects than young subjects for ACTH (p < .01), beta E (p < .01) and cortisol (p < .01). Plasma physostigmine concentrations did not differ between older and young subjects. CONCLUSIONS This study demonstrated increased HPA axis responsivity to a CNS cholinergic stimulus in normal human aging.

UI MeSH Term Description Entries
D007030 Hypothalamo-Hypophyseal System A collection of NEURONS, tracts of NERVE FIBERS, endocrine tissue, and blood vessels in the HYPOTHALAMUS and the PITUITARY GLAND. This hypothalamo-hypophyseal portal circulation provides the mechanism for hypothalamic neuroendocrine (HYPOTHALAMIC HORMONES) regulation of pituitary function and the release of various PITUITARY HORMONES into the systemic circulation to maintain HOMEOSTASIS. Hypothalamic Hypophyseal System,Hypothalamo-Pituitary-Adrenal Axis,Hypophyseal Portal System,Hypothalamic-Pituitary Unit,Hypothalamic Hypophyseal Systems,Hypothalamic Pituitary Unit,Hypothalamo Hypophyseal System,Hypothalamo Pituitary Adrenal Axis,Portal System, Hypophyseal
D008297 Male Males
D009325 Nausea An unpleasant sensation in the stomach usually accompanied by the urge to vomit. Common causes are early pregnancy, sea and motion sickness, emotional stress, intense pain, food poisoning, and various enteroviruses.
D010830 Physostigmine A cholinesterase inhibitor that is rapidly absorbed through membranes. It can be applied topically to the conjunctiva. It also can cross the blood-brain barrier and is used when central nervous system effects are desired, as in the treatment of severe anticholinergic toxicity. Eserine
D010913 Pituitary-Adrenal System The interactions between the anterior pituitary and adrenal glands, in which corticotropin (ACTH) stimulates the adrenal cortex and adrenal cortical hormones suppress the production of corticotropin by the anterior pituitary. Pituitary Adrenal System,Pituitary-Adrenal Systems,System, Pituitary-Adrenal,Systems, Pituitary-Adrenal
D001794 Blood Pressure PRESSURE of the BLOOD on the ARTERIES and other BLOOD VESSELS. Systolic Pressure,Diastolic Pressure,Pulse Pressure,Pressure, Blood,Pressure, Diastolic,Pressure, Pulse,Pressure, Systolic,Pressures, Systolic
D005260 Female Females
D006339 Heart Rate The number of times the HEART VENTRICLES contract per unit of time, usually per minute. Cardiac Rate,Chronotropism, Cardiac,Heart Rate Control,Heartbeat,Pulse Rate,Cardiac Chronotropy,Cardiac Chronotropism,Cardiac Rates,Chronotropy, Cardiac,Control, Heart Rate,Heart Rates,Heartbeats,Pulse Rates,Rate Control, Heart,Rate, Cardiac,Rate, Heart,Rate, Pulse
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D006854 Hydrocortisone The main glucocorticoid secreted by the ADRENAL CORTEX. Its synthetic counterpart is used, either as an injection or topically, in the treatment of inflammation, allergy, collagen diseases, asthma, adrenocortical deficiency, shock, and some neoplastic conditions. Cortef,Cortisol,Pregn-4-ene-3,20-dione, 11,17,21-trihydroxy-, (11beta)-,11-Epicortisol,Cortifair,Cortril,Epicortisol,Hydrocortisone, (11 alpha)-Isomer,Hydrocortisone, (9 beta,10 alpha,11 alpha)-Isomer,11 Epicortisol

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