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Your search keyword '"DAVIES, G. D."' showing total 78 results
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78 results on '"DAVIES, G. D."'

51. Histochemical studies of alkaline phosphatases in the tissues of the rat using frozen sections. II. Substrate specificity of enzymes hydrolyzing adenosinetriphosphate, muscle- and yeast-adenylic acids, and creatinephosphate at high PH; the histochemical demonstration of myosin ATP-ASE.

Author

MAENGWYN-DAVIES GD, FRIEDENWALD JS, and WHITE RT

Subjects
Animals, Rats, Substrate Specificity, Adenosine Monophosphate, Adenosine Triphosphate, Alkaline Phosphatase, Frozen Sections, Muscles, Myosins, Phosphocreatine, Phosphoric Monoester Hydrolases, Saccharomyces cerevisiae
Published
1952
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53. Tachyphylaxis. V. Tyramine in isolated organs.

Author

Maengwyn-Davies GD, Cowan FF, Koppanyi T, and Lei BW

Subjects
Animals, Cats, In Vitro Techniques, Muscle Contraction drug effects, Phenylephrine pharmacology, Rabbits, Reserpine pharmacology, Spleen metabolism, Tranylcypromine pharmacology, Aorta drug effects, Tachyphylaxis, Trachea drug effects, Tyramine pharmacology
Published
1966

55. Role of buffer mechanisms in sympathetic drug action.

Author

MAENGWYN-DAVIES GD, WALZ DT, and KOPPANYI T

Subjects
Buffers, Humans, Blood Pressure drug effects, Blood Pressure Determination, Epinephrine pharmacology, Hexamethonium Compounds pharmacology, Norepinephrine pharmacology, Sympatholytics
Published
1958

57. Tachyphylaxis. VI. Amphetamine in the isolated rabbit aortic strip.

Author

Maengwyn-Davies GD, Cowan FF, and Koppanyi T

Subjects
Animals, In Vitro Techniques, Muscle Contraction, Rabbits, Spleen drug effects, Amphetamine pharmacology, Aorta drug effects, Disulfiram pharmacology, Iproniazid pharmacology, Isoniazid pharmacology, Muscle, Smooth drug effects, Nialamide pharmacology, Tachyphylaxis, Tranylcypromine pharmacology
Published
1966

59. Reactivity to biogenic amines of isolated vasa deferentia and of ilea from guinea-pigs after repeated treatment with nicotine.

Author

Thoa NB and Maengwyn-Davies GD

Subjects
Animals, Dose-Response Relationship, Drug, Drug Synergism, Guinea Pigs, In Vitro Techniques, Male, Muscle Contraction drug effects, Nicotine pharmacology, Acetylcholine pharmacology, Histamine pharmacology, Ileum drug effects, Nicotine administration & dosage, Norepinephrine pharmacology, Potassium Chloride pharmacology, Vas Deferens drug effects
Published
1973

61. Desoxyisoprenaline: an adrenoceptor stimulating and blocking agent.

Author

Maengwyn-Davies GD, Fleisch JH, and Pruss TP

Subjects
Animals, Aorta drug effects, Blood Pressure drug effects, Calcium Chloride pharmacology, Cats, Epinephrine antagonists & inhibitors, Female, Histamine H1 Antagonists pharmacology, In Vitro Techniques, Male, Muscle Contraction drug effects, Norepinephrine antagonists & inhibitors, Papillary Muscles drug effects, Propranolol pharmacology, Rabbits, Rats, Receptors, Adrenergic, Trachea drug effects, Isoproterenol pharmacology, Receptors, Drug, Sympatholytics pharmacology, Sympathomimetics pharmacology
Published
1972
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67. Tachyphylaxis of some sympathomimetic amines. A preliminary report.

Author

COWAN FF, KOPPANYI T, and MAENGWYN-DAVIES GD

Subjects
Amphetamine pharmacology, Amphetamines, Blood Pressure pharmacology, Blood Pressure Determination, Ephedrine pharmacology, Heart physiology, Muscles physiology, Sympathomimetics, Tachyphylaxis, Tyramine pharmacology
Published
1961

70. Effects of vinblastine on catecholamine-biosynthetic enzymes in heart, sympathetic ganglion and adrenal glands of rats.

Author

Hanbauer I, Kopin IJ, Maengwyn-Davies GD, Thoa NB, and Weise VK

Subjects
Adrenal Glands drug effects, Animals, Carbon Isotopes, Catalase pharmacology, Desipramine pharmacology, Dopamine beta-Hydroxylase metabolism, Ganglia, Autonomic drug effects, Heart drug effects, In Vitro Techniques, Male, Methyltransferases metabolism, Norepinephrine metabolism, Phenylethanolamine N-Methyltransferase, Rats, Reserpine pharmacology, Time Factors, Tritium, Tyrosine pharmacology, Tyrosine 3-Monooxygenase metabolism, Adrenal Glands enzymology, Catecholamines biosynthesis, Ganglia, Autonomic enzymology, Myocardium enzymology, Vinblastine pharmacology
Abstract

1. The effect of vinblastine on the activities of dopamine-beta-hydroxylase (DBH) in heart, superior cervical ganglion and adrenal glands of rats and tyrosine hydroxylase (TH) and phenylethanolamine-N-methyl transferase (PNMT) in adrenal glands was examined.2. In the superior cervical ganglion and heart, DBH activity decreased within hours, reached a minimum in 3 to 5 days and slowly returned towards normal over the next 2 weeks.3. There was an increase in the activities of TH, DBH and PNMT in adrenal glands which was prevented by adrenal denervation.4. When the same total dose of vinblastine was administered subdivided over a period of 5 days, enzyme activities in heart, superior cervical ganglion or adrenal glands remained unchanged.

Published
1973
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72. Reactivity to biogenic amines of isolated aortic strips and electrically driven left atria from guinea-pigs after repeated treatment with nicotine.

Author

Maengwyn-Davies GD and Thoa NB

Subjects
Animals, Aorta, Thoracic drug effects, Dose-Response Relationship, Drug, Drug Synergism, Guinea Pigs, Heart Atria drug effects, In Vitro Techniques, Male, Nicotine pharmacology, Acetylcholine pharmacology, Heart drug effects, Histamine pharmacology, Muscle Contraction drug effects, Nicotine administration & dosage, Norepinephrine pharmacology, Potassium Chloride pharmacology
Published
1973

75. Tachyphylaxis. IV. Tyramine.

Author

Cowan FF, Koppanyi T, and Maengwyn-Davies GD

Subjects
Animals, Blood Pressure drug effects, Cats, Heart Rate drug effects, Hydrazines pharmacology, Nictitating Membrane drug effects, Norepinephrine pharmacology, Tachyphylaxis, Tyramine pharmacology
Published
1966

77. Histochemical studies of alkaline phosphatases in the tissues of the rat using frozen sections. I. Substrate specificity of enzymes hydrolyzing poly-glycol-mono-phosphate esters, hexose-diphosphate, and -naphthylphosphate.

Author

MAENGWYN-DAVIES GD, FRIEDENWALD JS, WHITE RT, and WILSON MM

Subjects
Animals, Rats, Substrate Specificity, Alkaline Phosphatase, Esters, Frozen Sections, Glycols, Hexoses, Naphthalenes, Organophosphorus Compounds, Phosphates, Phosphoric Monoester Hydrolases, Phosphorus, Phosphorus Compounds, Tissues
Published
1950
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