Results 61 to 70 of about 133,434 (282)

CATECHOLAMINE ASSAY BY RADIOENZYMATIC METHOD - A PROTOCOL

Journal of the Dow University of Health Sciences, 2008
Catecholamines are a group o f compounds identified by the catechol nucleus. The significant catecholamines found naturally in the body are epinephrine, nor- epinephrine and dopamine.
Nasim Karim, Joshua R. berlin
doaj   +2 more sources

Analysis of total urinary catecholamines by liquid chromatography: methodology, routine experience and clinical interpretations of results [PDF]

, 1983
A simple routine method is described for simultaneous assay of total urinary adrenaline, noradrenaline and dopamine. The catecholamines are pre-purified on a small ion-exchange column, separated by reversed phase ion-pair liquid chromatography, and are ...
Kees, Frieder K., Schleicher, E. D., Wieland, O. H.   +2 more
core   +1 more source

Structural Mechanism of an Efficacy Photoswitch Targeting the β2‐adrenergic Receptor

Angewandte Chemie International Edition, EarlyView.
Time‐resolved structures from x‐ray free‐electron laser measurements combined with cellular assays demonstrate how the photoswitchable β‐blocker photoazolol‐1 acts as an efficacy switch of β2‐adrenergic receptor function. Light‐induced ligand repositioning shifts activity from inverse agonism toward neutral antagonism by altering local helical ...
Robin Stipp, Quentin Bertrand, Matilde Trabuco, Anna Duran‐Corbera, Maria Tindara Ignazzitto, Hannah Glover, Fabienne Stierli, Juanlo Catena, Melissa Carrillo, Sina Hartmann, Hans‐Peter Seidel, Matthias Mulder, Thomas Mason, Yasushi Kondo, Maximillian Wranik, Martin Appleby, Christoph Sager, Raymond Sierra, Gregory Gate, Pamela Schleissner, Xinxin Cheng, Tobias Weinert, Robert Cheng, Sandra Mous, John H. Beale, Michal Kepa, Amadeu Llebaria, Michael Hennig, Xavier Rovira, Joerg Standfuss   +29 more
wiley   +1 more source

Catecholamine levels with use of electronic and combustible cigarettes

Tobacco Induced Diseases
Introduction Smoking elevates catecholamines that increase the risk for cardiovascular disease. Sparse evidence exists about the effects of e-cigarettes and catecholamines.
Remy Poudel, Shen Li, Haoyun Hoong, Juan Zhao, Shweta Srivastava, Rose Marie Robertson, Jennifer L. Hall, Sanjay Srivastava, Naomi M. Hamburg, Aruni Bhatnagar, Rachel J. Keith   +10 more
doaj   +1 more source

Oral Branched-Chain Amino Acid Supplements That Reduce Brain Serotonin During Exercise in Rats Also Lower Brain Catecholamines [PDF]

, 2013
Exercise raises brain serotonin release and is postulated to cause fatigue in athletes; ingestion of branched-chain amino acids (BCAA), by competitively inhibiting tryptophan transport into brain, lowers brain tryptophan uptake and serotonin synthesis ...
Choi, Sujean, DiSilvio, Briana, Fernstrom, John D., Fernstrom, Madelyn H.   +3 more
core   +1 more source

Shift Work: Gut Health and Metabolic Disease [PDF]

, 2020
The number of people engaged in shift work continues to rise, and with it the research linking shift work to various diseases and conditions. Shift work changes the body’s sleeping patterns and circadian rhythms which has an effect on all parts of the ...
Lane, Hailey
core   +1 more source

α1D-Adrenoceptors are responsible for the high sensitivity and the slow time-course of noradrenaline-mediated contraction in conductance arteries [PDF]

, 2013
The objective of this study was to determine whether the different time-course characteristics of α1-adrenoceptor-mediated contraction in arteries can be related to the subtypes involved.
Alexander, Arévalo-León, Cavalli, Chalothorn, Chen, Cotecchia, Daly, Deighan, Docherty, García-Cazarín, García-Sainz, García-Sainz, García-Sainz, Gisbert, Gisbert, Gisbert, Gisbert, Goldstein, Hawrylyshyn, Hein, Hosoda, Hrometz, Hussain, Keffel, Kenny, Koshimizu, Lachnit, Lyssand, Lyssand, Lyssand, Martinez-Rivelles, Martí, McCune, Methven, Methven, Michelotti, Monto, Noguera, Noguera, Philipp, Piascik, Piascik, Pérez-Aso, Rudner, Schwinn, Stassen, Taguchi, Tanaka, Tanoue, Tanoue, Theroux, Yamamoto, Zhong, Ziani   +53 more
core   +1 more source

Neuroendocrine and immune responses to a cognitive stress challenge in veterans with and without PTSD [PDF]

European Journal of Psychotraumatology, 2012
Background: PTSD has been associated with altered hypothalamus–pituitary–adrenal-axis (HPA-axis), immune and sympathetic nervous system (SNS) regulation.
Carien S. de Kloet, Eric Vermetten, Arthur R. Rademaker, Elbert Geuze, Herman G.M. Westenberg   +4 more
doaj   +1 more source

Ca2+-Stimulated Catecholamine Release from alpha-Toxin Permeabilized PC12 Cells [PDF]

, 1987
Two possible cellular pathways of catecholamines from the chromaffin vesicles of PC 12 cells to the surrounding medium are explored in this study. The direct one circumventing the cytoplasm can be activated in a-toxin-permeabilized cells with micromolar ...
Ahnert-Hilger, G., Bräutigam, M., Gratzl, Manfred   +2 more
core   +1 more source

Heat Stress and Gut Microbiome Dynamics in Poultry: Interplay, Consequences, and Mitigation Strategies

Animal Research and One Health, EarlyView.
Heat stress disrupts gut microbial balance in poultry, impairing nutrient absorption and immunity. This review outlines the interplay between thermal stress and microbiome dynamics and discusses integrative mitigation strategies, probiotics, phytogenics, cooling systems, and genetic adaptation to enhance poultry resilience.
O. E. Oke, A. I. Oni, O. A. Akosile, K. M. Oliyide, C. A. Ishola, M. O. Logunleko, O. A. Jimoh, C. P. Njoku, L. O. Fasasi, V. A. Uyanga   +9 more
wiley   +1 more source