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Alzheimers Dement
December 2024
Faculty of Medicine, Arish University, Arish, North Sinai, Egypt.
Background: Lingual taste cells (LTCs) are taste buds' sensory cells that modulate gustation. This study's aim is to assess whether it can be successfully implanted in hippocampus, modulating learning and memory deficits observed in Alzheimer's Dementia (AD).
Methods: Retrospective trials on rodents i.
Endothelium-derived 6-nitrodopamine is the major mechanism by which nitric oxide relaxes the rabbit isolated aorta.
Front Pharmacol
November 2024
Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas (UNICAMP), Campinas, São Paulo, Brazil.
6-Nitrodopamine (6-ND) is the predominant catecholamine released from isolated vascular tissues in both mammals and reptiles, with its release being significantly reduced by the NO synthesis inhibitor, N-nitro-L-arginine methyl ester (L-NAME). The vasorelaxation induced by 6-ND is unaffected by either L-NAME or the soluble guanylate cyclase (sGC) inhibitor, ODQ, indicating an alternative mechanism of action. The vasorelaxant effect appears to be mediated through selective antagonism of dopamine D receptors rather than traditional nitric oxide (NO)-mediated pathways.
View Article and Find Full Text PDFDirect modulation of CRH nerve terminal function by noradrenaline and corticosterone.
J Neurosci
December 2024
Centre for Neuroendocrinology and Department of Physiology, School of Biomedical Sciences, University of Otago, Dunedin, New Zealand.
Nerve terminals are the final point of regulation before neurosecretion. As such, neuromodulators acting on nerve terminals can exert significant influence on neural signalling. Hypothalamic corticotropin-releasing hormone (CRH) neurons send axonal projections to the median eminence where CRH is secreted to stimulate the hypothalamic-pituitary-adrenal (HPA) axis.
View Article and Find Full Text PDFA single-center clinical trial evaluating topical propranolol for preventing stress-induced hair loss.
FASEB J
November 2024
Department of Anesthesiology, Shenzhen Children's Hospital, Shenzhen, Guangdong, P. R. China.
There is currently a lack of pathological research on the hair loss caused by stress, and there is no effective treatment available. It has been previously reported that stress can cause sympathetic nerve activation and release of norepinephrine, which binds to beta-2 adrenergic receptors and causes a series of chemical reactions. Propranolol, as a beta-2 adrenergic receptors blocker, competitively antagonizes the effects of norepinephrine.
View Article and Find Full Text PDFVascular chemerin from PVAT contributes to norepinephrine and serotonin-induced vasoconstriction and vascular stiffness in a sex-dependent manner.
Am J Physiol Heart Circ Physiol
December 2024
Department of Pharmacology and Toxicology, Michigan State University, East Lansing, Michigan, United States.
The adipokine chemerin supports normal blood pressure and contributes to adiposity-associated hypertension, evidenced by falls in mean arterial pressure in Dahl SS rats given an antisense oligonucleotide against chemerin. In humans, circulating chemerin is positively associated with hypertension and aortic stiffness. Mechanisms of chemerin's influence on vascular health and disease remain unknown.
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