Results 81 to 90 of about 14,331 (219)

Pregnenolone sulfate increases hippocampal acetylcholine release and spatial recognition.

open access: yes, 2000
International audienceThe pregnenolone sulfate is a neurosteroid with promnesic properties. Recently, a correlation between endogenous levels of pregnenolone sulfate in the hippocampus and performance in a spatial memory task has been reported in aged ...
Darnaudéry, Muriel   +9 more
core   +1 more source

The TRPP2-dependent channel of renal primary cilia also requires TRPM3.

open access: yesPLoS ONE, 2019
Primary cilia of renal epithelial cells express several members of the transient receptor potential (TRP) class of cation-conducting channel, including TRPC1, TRPM3, TRPM4, TRPP2, and TRPV4.
Steven J Kleene   +6 more
doaj   +1 more source

Microbial Hydroxylation of Pregnenolone Derivatives

open access: yesChemical and Pharmaceutical Bulletin, 2005
Pregnenolone and pregnenolone acetate were incubated with the fungi Cunninghamella elegans, Rhizopus stolonifer and Gibberella fujikuroi. Incubation of with C. elegans yielded metabolites, 3beta,7beta,11alpha-trihydroxypreg-5-en-20-one, 3beta,6alpha,11alpha,12beta,15beta-pentahydroxypreg-4-en-20-one and 3beta,6beta,11alpha-trihydroxypreg-4-en-20-one ...
Choudhary, Muhammad Iqbal   +4 more
openaire   +3 more sources

Neuroprotection by the steroids pregnenolone and dehydroepiandrosterone is mediated by the enzyme aromatase

open access: yes, 2013
Pregnenolone and dehydroepiandrosterone (DHEA) are sex hormone precursors and neuroprotective steroids. Effects of pregnenolone and DHEA may be in part mediated by their conversion to testosterone and by the consecutive conversion of testosterone to ...
García-Segura, Luis M.   +2 more
core   +1 more source

A Comparison of Salivary Steroid Levels during Diagnostic Tests for Adrenal Insufficiency

open access: yesPrague Medical Report, 2016
Numerous diagnostic tests are used to evaluate the hypothalamic-pituitary-adrenal axis (HPA axis). The gold standard is still considered the insulin tolerance test (ITT), but this test has many limitations.
Michaela Dušková   +12 more
doaj   +1 more source

GABAergic neuroactive steroids: a new frontier in bipolar disorders?

open access: yesBehavioral and Brain Functions, 2012
Neurosteroids are synthesized in the brain and modulate brain excitability. There is increasing evidence of their sedative, anesthetic and antiseizure properties, as well as their influence on mood.
Carta Mauro Giovanni   +2 more
doaj   +1 more source

Metabolism of pregnenolone and its sulphate in normotensive control subject and patients with benign essential hypertension.

open access: yes, 1973
The urinary excretion of total etiocholanolone and four delta5-3beta-hydroxysteroids viz, pregnenediol, 17alpha-hydroxy-pregnenolone, pregnenetriol and dehydroepiandrosterone isolated from the glucuronide and sulphate fractions by sequential hydrolysis ...
Tan, Eng L.
core  

Pregnenolone separation from cholesterol using Sephadex LH-20 mini-columns

open access: yes, 1980
This article reports a new procedure for the separation of radiolabeled pregnenolone and cholesterol using minicolumns of Sephadex LH-20 and a simple solvent system.
Jefcoate, Colin R.   +3 more
core   +1 more source

Norepinephrine stimulates progesterone production in highly estrogenic bovine granulosa cells cultured under serum-free, chemically defined conditions

open access: yesReproductive Biology and Endocrinology, 2012
Background Since noradrenergic innervation was described in the ovarian follicle, the actions of the intraovarian catecholaminergic system have been the focus of a variety of studies.
Piccinato Carla A   +4 more
doaj   +1 more source

Pregnenolone decreased the effect of Henkel 100-induced responses in the OE.

open access: yes, 2016
(A) Representative submerged EOG responses to Henkel 100 (1:5,000) were recorded from the surface of the septum of female mice. Pregnenolone preincubation (1 μM) temporarily reduced the response amplitude.
Paul Scholz (683928)   +5 more
core   +1 more source

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