Results 31 to 40 of about 107,753 (225)

Stabilization and Reactions of Sulfur Radical Cations: Relevance to One-Electron Oxidation of Methionine in Peptides and Proteins

open access: yesCHIMIA, 2008
Methionine is a key amino acid that has numerous roles in essential vital processes. Moreover, methionine oxidation is biologically important during conditions of oxidative stress and represents an important step in the development of some ...
Krzysztof Bobrowski   +2 more
doaj   +1 more source

Label-free metabolic imaging of non-alcoholic-fatty-liver-disease (NAFLD) liver by volumetric dynamic optical coherence tomography [PDF]

open access: yesBiomed. Opt. Express 13 (2022) 4071-4086, 2022
Label-free metabolic imaging of non-alcoholic fatty liver disease (NAFLD) mouse liver is demonstrated ex vivo by dynamic optical coherence tomography (OCT). The NAFLD mouse is a methionine choline-deficient (MCD)-diet model, and two mice fed MCD diet for 1 and 2 weeks are involved in addition to a normal-diet mouse.
arxiv   +1 more source

Voxelwise principal component analysis of dynamic [S-methyl-11C]methionine PET data in glioma patients [PDF]

open access: yes, 2020
Recent works have demonstrated the added value of dynamic amino acid positron emission tomography (PET) for glioma grading and genotyping, biopsy targeting, and recurrence diagnosis. However, most of these studies are exclusively based on hand-crafted qualitative or semi-quantitative dynamic features extracted from the mean time activity curve (TAC ...
arxiv   +1 more source

Maturation of Circulatory Responses to Methionine-Enkephalin [PDF]

open access: yesPediatric Research, 1983
The cardiovascular and respiratory effects of the naturally occurring endogenous opiate, methionine-enkephalin, were studied in 23 fetal sheep, five newborn lambs, 15 pregnant sheep, and four nonpregnant ewes. The opiate peptide produced dose-dependent decreases in heart rate and blood pressure in fetal and neonatal lambs but increased heart rate and ...
Abraham M. Rudolph   +2 more
openaire   +3 more sources

Hyperpolarization Modulation of the T‐Type hCav3.2 Channel by Human Synenkephalin [1–53], a Shrew Neurotoxin Analogue without Paralytic Effects

open access: yesAngewandte Chemie, EarlyView.
Human synenkephalin [1–53] (hSYN), an analogue peptide of shrew saliva neurotoxins, was synthesized and its structural characteristics studied. Synthetic hSYN potently activated the T‐type voltage‐gated Ca channel hCav3.2 but did not paralyze mealworms. These findings offer new insight into neurological disorder treatment and evolutionary mechanisms of
Ryo Fukuoka   +5 more
wiley   +2 more sources

Protein Folding Simulations in a Deformed Energy Landscape [PDF]

open access: yesEur. Phys. J. B 12 (1999) 607-612, 2000
A modified version of stochastic tunneling, a recently introduced global optimization technique, is introduced as a new generalized-ensemble technique and tested for a benchmark peptide, Met-enkephalin.
arxiv   +1 more source

Metropolis simulations of Met-Enkephalin with solvent-accessible area parameterizations [PDF]

open access: yesPhys. Rev. E 69, 026703 (2004), 2003
We investigate the solvent-accessible area method by means of Metropolis simulations of the brain peptide Met-Enkephalin at 300$ K$. For the energy function ECEPP/2 nine atomic solvation parameter (ASP) sets are studied. The simulations are compared with one another, with simulations with a distance dependent electrostatic permittivity $\epsilon (r ...
arxiv   +1 more source

Methionine-enkephalin and leucine-enkephalin in human sympathoadrenal system and pheochromocytoma. [PDF]

open access: yesJournal of Clinical Investigation, 1982
To elucidate the physiological and pathophysiological significance of methionine- and leucine-enkephalin (Met-and Leu-enkephalin, respectively) in human sympathoadrenal system, the contents of these peptides in normal human sympathetic nervous system, adrenal medulla, and pheochromocytomas were determined by specific radioimmunoassays combined with ...
Hiroo Imura   +4 more
openaire   +2 more sources

Targeted Cell Reprogramming Produces Analgesic Chromaffin-Like Cells from Human Mesenchymal Stem Cells

open access: yesCell Transplantation, 2013
Transplantation of allogeneic adrenal chromaffin cells demonstrated the promise of favorable outcomes for pain relief in patients. However, there is a very limited availability of suitable human adrenal gland tissues, genetically well-matched donors in ...
T. Qu M.D., Ph.D.   +5 more
doaj   +1 more source

Genetically Engineered Human Mesenchymal Stem Cells Produce Met-Enkephalin at Augmented Higher Levels in Vitro

open access: yesCell Transplantation, 2006
We have reported that transplantation of adrenal medullary chromaffin cells that release endogenous opioid peptides into pain modulatory regions in the CNS produce significant antinociceptive effects in patients with terminal cancer pain.
Ikuko Sugaya   +3 more
doaj   +1 more source

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