Results 21 to 30 of about 168,979 (308)

A double-blind, placebo-controlled study evaluating the effects of caffeine and L-theanine both alone and in combination on cerebral blood flow, cognition and mood [PDF]

, 2015
Rationale -Evidence suggests interactive effects of the tea components caffeine and L-theanine on behaviour, yet no data exists exploring the impact of the two on cerebral blood flow (CBF).
Haskell, Crystal, Dodd, Fiona, Kennedy, David, Riby, Leigh, F. L. Dodd, C. F. Haskell-Ramsay, L. M. Riby, D. O. Kennedy   +7 more
core   +1 more source

Caffeine affects the biological responses of human hematopoietic cells of myeloid lineage via downregulation of the mTOR pathway and xanthine oxidase activity [PDF]

, 2015
Correction of human myeloid cell function is crucial for the prevention of inflammatory and allergic reactions as well as leukaemia progression. Caffeine, a naturally occurring food component, is known to display anti-inflammatory effects which have ...
Sumbayev, Vadim V., Gibbs, Bernhard F, Yasinska, Inna M., Sumbayev, Vadim V, Casely-Hayford, Maxwell A., Gibbs, Bernhard F., Vadim V. Sumbayev, Berger, Steffen M., Maryam Abooali, Prokhorov, Alexandr, Yasinska, Inna M, Abooali, Maryam, Berger, Steffen Michael, Isabel Gonçalves Silva, Bernhard F. Gibbs, Elizaveta Fasler-Kan, Fasler-Kan, Elizaveta, Alexandr Prokhorov, Gonçalves Silva, Isabel, Casely-Hayford, Maxwell A, Maxwell A. Casely-Hayford, Inna M. Yasinska, Steffen M. Berger, Abooali M, Casely-Hayford MA, Berger SM, Yasinska IM, Gibbs BF, Sumbayev VV, Prokhorov A, Gonçalves Silva I, Fasler-Kan E   +31 more
core   +2 more sources

Caffeine for the Pharmacological Treatment of Apnea of Prematurity in the NICU: Dose Selection Conundrum, Therapeutic Drug Monitoring and Genetic Factors

Frontiers in Pharmacology, 2021
Caffeine citrate is the drug of choice for the pharmacological treatment of apnea of prematurity. Factors such as maturity and genetic variation contribute to the interindividual variability in the clinical response to caffeine therapy in preterm infants,
Jia-Yi Long, Jia-Yi Long, Hong-Li Guo, Xin He, Ya-Hui Hu, Ying Xia, Rui Cheng, Xuan-Sheng Ding, Feng Chen, Jing Xu   +9 more
doaj   +1 more source

Induction of chromosome shattering by ultraviolet light and caffeine [PDF]

, 1981
Synchronized and asynchronously growing cells of a V79 sub-line of the Chinese hamster were either partial-cell irradiation (λ, 254 nm) or laser-UV-microirradiated (λ, 257 nm).
Cremer, Thomas, Cremer, Christoph, Zimmer, J., Zorn, Christian   +3 more
core   +1 more source

Serum caffeine concentrations in preterm infants: a retrospective study

Scientific Reports, 2023
Therapeutic drug monitoring is generally unnecessary in caffeine treatment for apnea of prematurity, as serum caffeine concentrations in preterm infants are normally markedly lower than those at which caffeine intoxication occurs.
Masashiro Sugino, Toru Kuboi, Yuta Noguchi, Katsufumi Nishioka, Yoko Tadatomo, Nana Kawaguchi, Takaaki Sadamura, Akiko Nakano, Yukihiko Konishi, Kosuke Koyano, Shinji Nakamura, Hitoshi Okada, Susumu Itoh, Takashi Kusaka   +13 more
doaj   +1 more source

Timing of Caffeine Therapy and Neonatal Outcomes in Preterm Infants: A Retrospective Study

International Journal of Pediatrics, 2016
Background. Caffeine is widely used to treat apnea of prematurity. Here, we evaluated the efficacy of early caffeine (1-2 DOL) in decreasing the incidence of adverse neonatal outcomes. Methods.
Ivan Hand, Nahla Zaghloul, Lily Barash, Rudolph Parris, Ulrika Aden, Hsiu-Ling Li   +5 more
doaj   +1 more source

Complexation of norfloxacin with DNA in the presence of caffeine [PDF]

, 2006
1H NMR spectroscopy (500 MHz) has been used to quantify the complexation of the antibacterial antibiotic Norfloxacin (NOR) with DNA in the presence of Caffeine (CAF). Separate studies have been made for the self-association of NOR, its hetero-association
Davies, David B., Rybakova, K.A., Evstigneev, M.P.   +2 more
core   +1 more source

Caffeine activates HOG-signalling and inhibits pseudohyphal growth in Saccharomyces cerevisiae

BMC Research Notes, 2023
Objective Caffeine has a wide range of effects in humans and other organisms. Caffeine activates p38 MAPK, the human homolog to the Hog1 protein that orchestrates the high-osmolarity glycerol (HOG) response to osmotic stress in the yeast Saccharomyces ...
Tarek Elhasi, Anders Blomberg
doaj   +1 more source

Impact of caffeine on myocardial perfusion reserve assessed by semiquantitative adenosine stress perfusion cardiovascular magnetic resonance

Journal of Cardiovascular Magnetic Resonance, 2019
Background Adenosine is used in stress perfusion cardiac imaging to reveal myocardial ischemia by its vasodilator effects. Caffeine is a competitive antagonist of adenosine.
Andreas Seitz, Philipp Kaesemann, Maria Chatzitofi, Stephanie Löbig, Gloria Tauscher, Raffi Bekeredjian, Udo Sechtem, Heiko Mahrholdt, Simon Greulich   +8 more
doaj   +1 more source

Effect Solvent and Extraction Method on the Characteristics of Green Bean Robusta Coffee [PDF]

BIO Web of Conferences
One of the chemical elements found in coffee is caffeine, which is the second-largest secondary metabolite after chlorogenic acid. Robusta coffee has a higher caffeine content than Arabica.
Winarsih Sri, Sukardi Sukardi, Wachid Mochammad, Ismayawati Ayu Diawi   +3 more
doaj   +1 more source