Results 71 to 80 of about 6,560 (173)

Yohimbine-related Alkaloids from

open access: yesNatural Product Communications, 2018
Five new yohimbine-type indole alkaloids were isolated from the leaves of Tabernaemontana corymbosa . Their structures were determined on the basis of the NMR and Circular Dichroism (CD) spectroscopy.
Alfarius Eko Nugroho   +5 more
doaj   +1 more source

Validated methods for determination of yohimbine hydrochloride in the presence of its degradation products

open access: yesBulletin of Faculty of Pharmacy Cairo University, 2011
Two simple, accurate and sensitive and techniques have been developed and validated for the determination of yohimbine hydrochloride in presence of its acid, alkaline and photo-degradates as stability-indicating studies.
M. Farouk   +3 more
doaj   +1 more source

Conversion of Yohimbine into beta-Yohimbine and 3-epi-beta-Yohimbine. [PDF]

open access: yesActa Chemica Scandinavica, 1957
W. O. Godtfredsen   +4 more
openaire   +1 more source

The Effect of Dorsal Hippocampal α2-Adrenegic Receptors on WIN55,212-2 State-Dependent Memory of Passive Avoidance

open access: yesMajallah-i Dānishgāh-i ̒Ulūm-i Pizishkī-i Qum, 2010
Background and Objectives: Cannabinoids are a class of psychoactive compounds that produce a wide array of effects in a large number of species. In the present study, the effects of bilateral intra-CA1 injections of an α2-adrenergic receptor agents,
M Piri   +3 more
doaj  

Noradrenergic control of error perseveration in medial prefrontal cortex

open access: yesFrontiers in Integrative Neuroscience, 2013
The medial prefrontal cortex (mPFC) plays a key role in behavioral variability, action monitoring, and inhibitory control. The functional role of mPFC may change over the lifespan due to a number of aging-related issues, including dendritic regression ...
Marcelo S Caetano   +7 more
doaj   +1 more source

Simultaneous Determination of Reserpine, Rescinnamine, and Yohimbine in Human Plasma by Ultraperformance Liquid Chromatography Tandem Mass Spectrometry

open access: yesJournal of Analytical Methods in Chemistry, 2013
A sensitive and selective UPLC-MS/MS method was developed and validated for the determination of three indolic alkaloids (reserpine, rescinnamine, and yohimbine) in human plasma using papaverine as internal standard (IS).
Muzaffar Iqbal   +3 more
doaj   +1 more source

Basal cortisol level modulates stress-induced opioid-seeking behavior

open access: yesNeurobiology of Stress
In preclinical studies and our human laboratory, the α2-noradrenergic autoreceptor antagonist yohimbine was found to promote drug-seeking behavior. This study evaluated effects of dose-combinations of yohimbine and the glucocorticoid receptor agonist ...
Mark K. Greenwald   +3 more
doaj   +1 more source

The Role of Mitochondrial Biogenesis and Α2-Adrenergic Receptors of the Hippocampal CA1 Region in Morphine-Induced Memory Impairment [PDF]

open access: yesMajallah-i Dānishgāh-i ̒Ulūm-i Pizishkī-i Bābul
Background and Objective: Mitochondrial biogenesis and the adrenergic system play an important role in cognitive processes. The dorsal hippocampus (CA1) has a high distribution of α2-adrenergic receptors.
E Beirami, SM Seyedhosseini Tamijani
doaj  

Adrenoceptors of the medial septal area modulate water intake and renal excretory function induced by central administration of angiotensin II

open access: yesBrazilian Journal of Medical and Biological Research, 2002
We investigated the role of alpha-adrenergic antagonists and clonidine injected into the medial septal area (MSA) on water intake and the decrease in Na+, K+ and urine elicited by ANGII injection into the third ventricle (3rdV).
Saad W.A.   +5 more
doaj  

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