Results 51 to 60 of about 67,731 (192)

Role of nanostructured aggregation of chitosan derivatives on [5-methionine]enkephalin affinity [PDF]

open access: yes, 2017
Affinities of quaternary ammonium-chitosan conjugates, their thiolated derivatives and corresponding nanostructured aggregates towards the hydrophilic drug [5-methionine]enkephalin were compared by Nuclear Magnetic Resonance (NMR) spectroscopic methods ...
ZAMBITO, YLENIA   +11 more
core   +1 more source

Molecular and Endocrine Regulation of Ovarian Maturation in the Black Tiger Prawn (Penaeus monodon) and Associated Challenges in Its Aquaculture

open access: yesReviews in Aquaculture, Volume 18, Issue 2, March 2026.
ABSTRACT Over the past four decades, substantial research has investigated the regulation of ovarian maturation and spawning in the black tiger prawn (Penaeus monodon). In this species, female reproduction is strongly suppressed by gonad‐inhibiting hormone (GIH) released from the eyestalk, making eyestalk ablation (ESA) the most widely adopted spawning‐
Gourab Chowdhury   +4 more
wiley   +1 more source

Modulation of cholinergic neurotransmission in airways by enkephalin

open access: yes, 1985
We compared the effects of methionine enkephalin and leucine enkephalin on contractions of isolated canine tracheal smooth muscle strips induced by field electrical stimulation (ES) and exogenous acetylcholine (approximately 10(-5) M).
J. A. Russell, E. J. Simons
core   +1 more source

Cerebrospinal Fluid Proenkephalin Predicts Striatal Atrophy Decades before Clinical Motor Diagnosis in Huntington's Disease

open access: yesMovement Disorders, Volume 41, Issue 1, Page 95-106, January 2026.
Abstract Background Huntington's disease (HD) is characterized by early, selective, progressive vulnerability of striatal medium spiny neurons (MSNs). Proenkephalin (PENK), a precursor of opioid peptides abundantly expressed in MSNs, is a promising biomarker of striatal integrity, but region‐specific associations and its potential for early‐stage ...
Mena Farag   +14 more
wiley   +1 more source

Metabolic signatures of the integrated profile of cardiovascular autonomic modulation and cardiorespiratory fitness in apparently healthy individuals

open access: yesPhysiological Reports, Volume 14, Issue 2, January 2026.
Abstract Cardiovascular autonomic modulation (CAM) and cardiorespiratory fitness (CRF) are well‐established predictors of health. Identifying metabolites associated with integrated CAM‐CRF profiles may help characterize healthy physiological states.
Étore De Favari Signini   +9 more
wiley   +1 more source

Enkephalin inhibits the release and action of secretin on pancreatic secretion in the dog.

open access: yes, 1980
1. Pancreatic bicarbonate and protein secretion as well as immuno-reactive plasma secretin concentration in response to a meal, duodenal acidification and exogenous secretin or octapeptide of cholecystokinin (OP-CCK) have been measured following ...
D H Coy   +9 more
core   +1 more source

The role of immune responses and microbiota in adipose tissue homeostasis

open access: yesThe Journal of Physiology, Volume 603, Issue 24, Page 7695-7712, December 15, 2025.
Abstract figure legend Gut microbiota regulate white and brown adipose tissue homeostasis via modulation of gut hormone secretion, activation of pathogen‐associated pattern receptors and production of bioactive molecules and metabolites such as short‐chain fatty acids, endocannabinoids, amino acid derivates and bile acids, all of which affect ...
Shahar Azar, Barbara Rehermann
wiley   +1 more source

Immunohistochemical localization of enkephalin-like substance in the central nervous system of the amphioxus [PDF]

open access: yes
The localization of enkephalin-like materials in the central nervous system of the amphioxus, Branchiostoma belcheri, was studied by immunohistochemical techniques, employing antisera raised in rabbit against synthetic methionine-enkephalin and leucine ...
ウエムラ, ハルコ   +14 more
core   +1 more source

In Vitro Enzymatic Stabilities of Methionine-enkephalin Analogues Containing an Adamantane-type Amino Acid [PDF]

open access: yes, 2008
The enzymatic stability of synthetic methionine-enkephalin peptide analogues containing an unnatural amino acid of the adamantane-type 3-5 was examined in human serum, at 37 °C, and compared with the results of the degradation of the parent endogenous ...
Horvat, Štefica   +3 more
core   +1 more source

Characterization and Identification of Potential Antioxidant, Antidiabetic, and Antihypertensive Peptides From Hydrolysates of Tenebrio molitor Flour and Its Protein Concentrate

open access: yesJournal of Food Science, Volume 90, Issue 10, October 2025.
ABSTRACT Insects are recognized as a potential alternative source of proteins and have been studied in recent years as a substrate for enzymatic hydrolysis to obtain bioactive peptides. This study aimed to evaluate the production of hydrolysates with antioxidant, antidiabetic, and antihypertensive properties from mealworm (Tenebrio molitor) flour and ...
Francielle Miranda de Matos   +1 more
wiley   +1 more source

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