Increase of Enzyme Activities following the in vitro Peroxidation of Normal Human Red Blood Cells

Enzyme ◽  
1988 ◽  
Vol 39 (1) ◽  
pp. 1-7 ◽  
Author(s):  
J. L. Vives Carrons ◽  
M. A. Pujades ◽  
D. Colomer
Keyword(s):  
Red Blood Cells ◽  
Enzyme Activities ◽  
Blood Cells ◽  
Human Red Blood Cells ◽  
Normal Human

In vitro effects of low level yellow laser irradiation on human red blood cells

2016 ◽  
Author(s):  
Mustafa S. Al Musawi ◽  
M.S. Jaafar ◽  
B.T. Al-Gailani ◽  
Naser M. Ahmed ◽  
Fatanah M. Suhaimi
Keyword(s):  
Red Blood Cells ◽  
Laser Irradiation ◽  
Blood Cells ◽  
Low Level ◽  
Human Red Blood Cells ◽  
Yellow Laser ◽  
In Vitro Effects

Decarboxylation of Radioactive DOPA by Erythrocytes in Schizophrenia

1971 ◽  
Vol 118 (545) ◽  
pp. 465-466 ◽  
Author(s):  
Ngo Tran ◽  
Marcel Laplante ◽  
Etienne Lebel
Keyword(s):  
Red Blood Cells ◽  
Blood Cells ◽  
Ionization Chamber ◽  
Present Experiment ◽  
Continuous Measurement ◽  
Human Tissues ◽  
Chamber Method ◽  
Human Red Blood Cells

The decarboxylation of 3, 4-dihydroxyphenyl-alanine (Dopa) to dopamine has been shown previously in animal and human tissues in both in vitro and in vivo studies (Sourkes, 1966; Vogel et al., 1970). However, very little information is available as to whether or not the decarboxylation of Dopa occurs in human red blood cells (RBC). In the present experiment we demonstrated this change in RBC from normals and from schizophrenics. An ionization chamber method was used for an instantaneous and continuous measurement of 14CO2 production from DL-dopa-carboxyl-14C by RBC in vitro.

scholarly journals Chemical composition of PM10 and its effect on in vitro hemolysis of human red blood cells (RBCs): a comparison study during dust storm and inversion

2019 ◽  
Vol 17 (1) ◽  
pp. 493-502 ◽  
Author(s):  
Maryam Faraji ◽  
Zahra Pourpak ◽  
Kazem Naddafi ◽  
Ramin Nabizadeh Nodehi ◽  
Mohammad Hossein Nicknam ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Red Blood Cells ◽  
Dust Storm ◽  
Blood Cells ◽  
Comparison Study ◽  
Human Red Blood Cells ◽  
And Inversion

The Effects of Medical Diagnostic Low Dose X-rays after in vitro Exposure of Human Red Blood Cells: Hemolysis and Osmotic Fragility

2019 ◽  
Vol 11 (3) ◽  
pp. 237-243 ◽  
Author(s):  
Montree Tungjai ◽  
Jetchada Sopapang ◽  
Natdanai Tasri ◽  
Chanatip Osothsongkroh ◽  
Attapon Jantarato ◽  
...  
Keyword(s):  
Red Blood Cells ◽  
Blood Cells ◽  
Low Dose ◽  
Osmotic Fragility ◽  
X Rays ◽  
Human Red Blood Cells ◽  
In Vitro Exposure ◽  
Medical Diagnostic

Catechol O-Methyltransferase in Red Blood Cells of Schizophrenic, Depressed, and Normal Human Subjects

1976 ◽  
Vol 128 (2) ◽  
pp. 184-187 ◽  
Author(s):  
Helen L. White ◽  
Malcolm N. McLeod ◽  
Jonathan R. T. Davidson
Keyword(s):  
Red Blood Cells ◽  
Blood Cells ◽  
Human Subjects ◽  
Normal Subjects ◽  
Enzyme Preparations ◽  
Human Red Blood Cells ◽  
Schizophrenic Patients ◽  
Normal Human ◽  
The Mean ◽  
Isoelectric Ph

SummaryCatechol O-methyltransferase of lysed human red blood cells was assayed under optimal conditions, using saturating concentrations of the substrates, S-adenosyl-L-methionine and 3,4-dihydroxybenzoic acid. The mean enzyme activity found in 24 normal subjects was 29.2 nmol/hr/ml RBC. The mean activity in blood of 33 female unipolar depressives was not significantly different from normal. However, higher enzyme activities were observed in the blood of 11 schizophrenic patients (38.9 nmol/hr/ml RBC). Partially purified enzyme preparations from blood of normal and schizophrenic individuals were indistinguishable with respect to substrate specificities, isoelectric pH values, and ratios of the two O-methylated products. Therefore it is unlikely that any defect in O-methylation which may occur in schizophrenia can be attributed to a change in the intrinsic properties of erythrocyte catechol O-methyltransferase.

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