scholarly journals Monoamine oxidase and catechol-o-methyltransferase activity in hamster and rat insulinomas

Diabetologia ◽  
1979 ◽  
Vol 17 (4) ◽  
pp. 249-256 ◽  
Author(s):  
J. M. Feldman ◽  
D. S. Reintgen ◽  
H. F. Seigler
Keyword(s):  
Monoamine Oxidase ◽  
Methyltransferase Activity

Platelet monoamine oxidase and erythrocyte Catechol-o-Methyltransferase activity in alcoholism and controlled abstinence

1983 ◽  
Vol 12 (1) ◽  
pp. 85-91 ◽  
Author(s):  
O.P. Agarwal ◽  
G. Philippu ◽  
U. Milech ◽  
B. Ziemsen ◽  
O. Schrappe ◽  
...  
Keyword(s):  
Monoamine Oxidase ◽  
Methyltransferase Activity ◽  
Platelet Monoamine Oxidase

Effect of Angiotensin II on Noradrenaline Content in the Rat Hypothalamus

1976 ◽  
Vol 51 (s3) ◽  
pp. 395s-397s
Author(s):  
M. Iijima ◽  
Y. Kitamura ◽  
N. Yamamoto ◽  
H. Kawamura ◽  
T. Yasugi ◽  
...  
Keyword(s):  
Angiotensin Ii ◽  
Monoamine Oxidase ◽  
Intravenous Administration ◽  
Oxidase Activity ◽  
Monoamine Oxidase Activity ◽  
Methyltransferase Activity ◽  
Noradrenaline Content ◽  
Rat Hypothalamus

1. Intravenous administration of angiotensin II reduced the adrenaline content, increased the catechol-O-methyltransferase activity, and decreased the monoamine oxidase activity of the rat hypothalamus. 2. Intraventricularly administered angiotensin II reduced the noradrenaline content to a smaller extent. 3. The change produced by intravenous administration of angiotensin might be indirectly caused by a response to angiotensin.

Neuronal and Extraneuronal Uptake of 3H-Norepinephrine in the Heart of the Active Bat: An Electron Microscopic Radioautographic Study

1973 ◽  
Vol 31 ◽  
pp. 522-523
Author(s):  
Martin Hagopian ◽  
Michael D. Gershon ◽  
Eladio A. Nunez
Keyword(s):  
Smooth Muscle ◽  
Monoamine Oxidase ◽  
Vascular Smooth Muscle ◽  
Cardiac Muscle ◽  
Maximum Rate ◽  
External Medium ◽  
Extraneuronal Uptake ◽  
Electron Microscopic ◽  
Cardiac Tissues ◽  
High Affinity

The ability of cardiac tissues to take up norepinephrine from an external medium is well known. Two mechanisms, called Uptake and Uptake respectively by Iversen have been differentiated. Uptake is a high affinity system associated with adrenergic neuronal elements. Uptake is a low affinity system, with a higher maximum rate than that of Uptake. Uptake has been associated with extraneuronal tissues such as cardiac muscle, fibroblasts or vascular smooth muscle. At low perfusion concentrations of norepinephrine most of the amine taken up by Uptake is metabolized. In order to study the localization of sites of norepinephrine storage following its uptake in the active bat heart, tritiated norepinephrine (2.5 mCi; 0.064 mg) was given intravenously to 2 bats. Monoamine oxidase had been inhibited with pheniprazine (10 mg/kg) one hour previously to decrease metabolism of norepinephrine.

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