Results 71 to 80 of about 980 (152)
, 1995 The activity of a series of 1,3-dipropyl-xanthines bearing C8-cycloalkyl substituents as antagonists at A1 and A2 adenosine receptors is examined. Pharmacological results showed that the size of the 8-substituent is an important feature for response in ...
Corsano S +5 more
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Effect of xanthines and histamine on ion transport and respiration by frog gastric mucosa
, 1965 In standard chloride solutions, methyl xanthines enhanced ion transport and oxygen consumption by frog gastric mucosa in vitro to a significantly greater extent than did histamine. Substituting glucuronate for chloride in the bathing solutions abolished
John B. Harris, Darwin Alonso
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Measurements of Solubilities of Xanthines in Supercritical Carbon Dioxide + Methanol
, 1995 Solubilities of the xanthines caffeine, theophylline, and theobromine in different supercritical (carbon dioxide + methanol) mixtures were measured at 313 K and 22 MPa.
Johannsen, Monika, Brunner, Gerd
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Journal of Asthma and Allergy, 2022 Hye Jung Park,1 Soyoung Jeon,2 Hye Sun Lee,2 Bo Yeon Kim,3 Yu Jin Chae,3 Gui Ok Kim,3 Jung-Won Park,4,5 Jae-Hyun Lee4,5 1Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea ...
Park HJ +7 more
doaj
, 2011 International audienceThe chromatographic behavior of native titania was investigated in aqueous normal phase chromatography using a set of N-methylated xanthines as polar test solutes.
Abi Jaoudé, Maguy +3 more
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Algunos aspectos de las asociaciones moleculares base Xántica-Lidocaína
, 1989 The interaction and its stoichometry between xanthines, caffeine, theophylline and theobromine, and lidocaine are discussed. Also, the solubility for the xanthines were determined in dioxane-water mixtures, and the solubility curves were determined.Se ...
Thomas, J. +5 more
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, 1999 A bacterial consortium consisting of strains belongings to the genus Klebsiella and Rhodococcus quantitatively converts 1-, 3- and 7-substituted xanthines to their respective 8-oxo ...
Sridhar, GR, Madyastha, KM
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Antioxidant effect of naturally occurring xanthines on the oxidative damage of DNA bases
, 2017 The repair of the oxidised radicals of adenine and guanosine by several naturally occurring xanthines was studied. Each pair of DNA purine/xanthine was made to react with the sulphate radical and the decrease of the concentration of both compounds was ...
R. M.B. Dias +4 more
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, 2010 A number of novel xanthines bearing a variety of substituents at positions 1, 3, 7 and 8 were prepared and evaluated for their binding affinity to the human adenosine receptor A1, A2A, A2B and A3 subtypes.
Franco Fernández +8 more
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The action of xanthin and methyl xanthins on the isolated intestine
Experimental Biology and Medicine, 1916 The tests were made with different concentrations of xanthin and its derivatives dissolved in Locke's solution which were carried out on segments of different parts of the intestine of the rabbit. Sodium xanthin in concentrations of 1 : 2,000 and 1 : 1,000 caused increased tonus which was more pronounced in the large than in the small intestine.
W. Salant, E. W. Schwartze
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