Results 41 to 50 of about 980 (152)

What do we know about the sleep effects of caffeine used to treat apnoea of prematurity? A systematic review of the literature

open access: yesMolecular and Cellular Pediatrics, 2023
Objective Scientific scrutiny has proved the safety and benefits of caffeine to treat apnoea of prematurity (AOP). However, there is no consensus on the effects of this treatment on sleep, especially considering the key role of adenosine and early brain ...
Ana Renata Pinto de Toledo   +5 more
doaj   +1 more source

The inflluence of emulsifiers on physical properties and release parameters of creams with caffeine

open access: yesCurrent Issues in Pharmacy and Medical Sciences, 2015
Caffeine is well known alkaloid chemical compound belonging to the methyl-xanthines group. It is an active substance that is found in many cosmetic products, as it has a stimulating action on both the central nervous system and the metabolism ...
Dwornicka Dorota   +6 more
doaj   +1 more source

Multi-target Natural and Nature-Inspired Compounds against Neurodegeneration: A Focus on Dual Cholinesterase and Phosphodiesterase Inhibitors

open access: yesApplied Sciences, 2021
Alzheimer’s disease is a memory-related neurodegenerative condition leading to cognitive impairment. Cholinergic deficit, together with other underlying mechanisms, leads the to onset and progression of the disease.
Giovanni Ribaudo   +2 more
doaj   +1 more source

Efficacy and safety profile of xanthines in COPD: a network meta-analysis

open access: yesEuropean Respiratory Review, 2018
Theophylline can still have a role in the management of stable chronic obstructive pulmonary disease (COPD), but its use remains controversial, mainly due to its narrow therapeutic window. Doxofylline, another xanthine, is an effective bronchodilator and
Mario Cazzola   +6 more
doaj   +1 more source

THE STUDY OF HYPOGLYCEMIC ACTIVITY OF 3-BENZYL-8-METHYLXANTHINE DERIVATIVES

open access: yesAktualʹnì Pitannâ Farmacevtičnoï ì Medičnoï Nauki ta Praktiki, 2015
Diabetes mellitus is a chronic endocrine disease. It etiology is the impact of both endogenous (genetic) and exogenous factors that cause absolute or relative shortage of insulin or not effective use of it, which in turn leads to disruption of all kinds ...
I. М. Bilay   +6 more
doaj   +1 more source

Absence of xanthine oxidase or xanthine dehydrogenase in the rabbit myocardium [PDF]

open access: yesBiochemical and Biophysical Research Communications, 1986
We directly measured the activity of the enzymes xanthine oxidase and xanthine dehydrogenase in rabbit and rat hearts, using a sensitive radiochemical assay. Neither xanthine oxidase activity nor xanthine dehydrogenase activity was detected in the rabbit heart.
Grum, Cyril M.   +3 more
openaire   +2 more sources

Xanthines as a scaffold for molecular diversity [PDF]

open access: yes, 2018
Summary: Xanthines represent a new, versatile scaffold for combinatorial chemistry. A five-step solid-phase synthesis of xanthine derivatives is described which includes alkylations, a nucleophilic displacement reaction at a heterocycle and a ring ...
Eberle, Alex, Heizmann, Gerhard
core  

The Effect of Lipopolysaccharide on the Disposition of Xanthines in Rats

open access: yes, 1993
The effect of lipopolysaccharide (LPS) isolated from Klebsiella pneumoniae O3 on the pharmacokinetic behaviour and metabolism of the xanthines, theophylline and 1-methyl-3-propylxanthine (MPX), which are mainly metabolized by the liver, was investigated ...
Isao Muraoka   +5 more
core   +1 more source

Structural and Conformational Studies on Carboxamides of 5,6-Diaminouracils—Precursors of Biologically Active Xanthine Derivatives

open access: yesMolecules, 2019
8-Arylethynylxanthine derivatives are potent, selective adenosine A2A receptor antagonists, which represent (potential) therapeutics for Parkinson’s disease, Alzheimer’s dementia, and the immunotherapy of cancer.
Daniel Marx   +3 more
doaj   +1 more source

Synthesis and physical-chemical properties of 3-benzyl-8-propylxanthine and its water-soluble salts

open access: yesAktualʹnì Pitannâ Farmacevtičnoï ì Medičnoï Nauki ta Praktiki, 2016
Aim. Selection of basic compounds is a key moment of the novel drug substances development process. Nowadays, it is possible to model the properties of biologically active substances with the help of computer technologies and the special software.
E. K. Mikhal’chenko   +2 more
doaj   +1 more source

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