Results 101 to 110 of about 11,930 (298)

A Case of Insulinoma Detected by 68Ga-DOTANOC PET/CT and Missed by 18F-Dihydroxyphenylalanine PET/CT

open access: yes, 2013
: A 65-year-old woman with suspected insulinoma on the basis of clinical, biochemical, and conventional imaging data underwent F-dihydroxyphenylalanine (DOPA) PET/CT and Ga-DOTANOC PET/CT.
Rindi, Guido   +5 more
core   +1 more source

Alpha‐Synuclein Promotes Anterograde Vesicle Transport in Melanocytes and Melanoma Cells: A Pro‐Survival Function

open access: yesJournal of the Chinese Chemical Society, EarlyView.
Model for how α‐syn modulates the positioning of endolysosomes in melanoma cells. (a) α‐syn tethers endolysosomes to the plasma membrane, a last step in anterograde transport. (b) Loss of α‐syn expression causes the loss of the tethering function, which leads to perinuclear vesicle clustering. Reproduced from the open access article.
Stephan N. Witt
wiley   +1 more source

Evidence for PQQ as cofactor in 3,4-dihydroxyphenylalanine (dopa) decarboxylase of pig kidney

open access: yes, 1988
Pig kidney 3,4-dihydroxyphenylalanine (dopa) decarboxylase (EC 4.1.1.28) was purified to homogeneity. Treatment of the enzyme with phenylhydrazine (PH) according to a procedure developed for analysis of quinoproteins gave products which were identified ...
Groen, Barend W.   +5 more
core   +1 more source

Optimization of bioactive compounds extraction from Rosa canina L. pseudofruit through the action of two hydrolytic enzyme preparations

open access: yesJournal of Chemical Technology &Biotechnology, EarlyView.
Abstract BACKROUND The pseudo‐fruit of Rosa canina L. is a rich source of bioactive compounds with antioxidant, anti‐inflammatory, anti‐cancer, anti‐diabetic, anti‐aging, and antimicrobial activities. The aim of the present study is the optimization of a green process based on the action of two hydrolytic enzyme preparations, namely Pectinex® Ultra ...
Zafeiria Lemoni   +6 more
wiley   +1 more source

The Interaction of Histamine H3 and Dopamine D1 Receptors on Hyperkinetic Alterations in Animal Models of Parkinson’s Disease

open access: yesPharmaceuticals
Parkinson’s disease is associated with the loss of more than 40% of dopaminergic neurons in the substantia nigra pars compacta. One of the therapeutic options for restoring striatal dopamine levels is the administration of L-3,4-dihydroxyphenylalanine (L-
Alberto Avila-Luna   +6 more
doaj   +1 more source

The effects of royal jelly on human health: A narrative review of clinical studies

open access: yesJSFA reports, EarlyView.
Abstract Royal jelly (RJ) is a natural bioactive substance with documented effects on human health. This narrative review synthesizes evidence from clinical and clinically relevant experimental studies evaluating the therapeutic potential of RJ.
Georgios Goras   +2 more
wiley   +1 more source

THE METABOLISM OF 3,4-DIHYDROXYPHENYLALANINE

open access: yesJournal of Biological Chemistry, 1957
K N, SHAW, A, MCMILLAN, M D, ARMSTRONG
openaire   +2 more sources

Self-Powered Enzymatic Electrosynthesis of l‑3,4-Dihydroxyphenylalanine in a Hybrid Bioelectrochemical System

open access: yes, 2018
Enzymatic electrosynthesis has been used to synthesize a variety of chemicals with the electric energy input. On the other hand, enzymatic fuel cells can provide off-grid electricity from inexpensive and renewable fuels.
Ranran Wu   +3 more
core   +1 more source

Beyond Skin and Eyes: The Medical and Social Burden of Oculocutaneous Albinism in Africa: A Narrative Review

open access: yesJEADV Clinical Practice, EarlyView.
ABSTRACT Oculocutaneous albinism (OCA) is a genetic disorder found worldwide, but its impact is particularly pronounced in the African continent. This results from both a higher prevalence and the persistent myths and superstitions surrounding the condition in many African communities.
Rebecca Donadoni   +3 more
wiley   +1 more source

A novel approach to tyrosinase-based biosensors: Electrode reactions and biological measurement

open access: yesBiosensors and Bioelectronics: X
This study introduces a novel tyrosinase-based biosensor designed to simultaneously detect tyrosinase, tyrosine, L-DOPA, and L-DOPA quinone. The biosensor, designated as GCE/GNP/Cys/Chit/Tyrase, was developed by immobilizing tyrosinase on a modified ...
Masumeh Goodarzi   +3 more
doaj   +1 more source

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