The Interaction of Cytochrome Oxidase with Hydrogen Peroxide: The Relationship of Compounds P and F

Biochemistry ◽  
1995 ◽  
Vol 34 (42) ◽  
pp. 13802-13810 ◽  
Author(s):  
Marian Fabian ◽  
Graham Palmer
Keyword(s):  
Hydrogen Peroxide ◽  
Cytochrome Oxidase ◽  
Relationship Of ◽  
The Relationship

Cytochrome Oxidase Activity and Body Weight in Rats and in Three Species of Large Animals

1956 ◽  
Vol 186 (2) ◽  
pp. 203-206 ◽  
Author(s):  
H. O. Kunkel ◽  
John F. Spalding ◽  
Glovanni de Franciscis ◽  
Mary F. Futrell
Keyword(s):  
Body Weight ◽  
Cytochrome Oxidase ◽  
Oxidase Activity ◽  
Inverse Function ◽  
The Body ◽  
Unit Weight ◽  
Cytochrome Oxidase Activity ◽  
Large Animals ◽  
Relationship Of ◽  
The Relationship

Study of the relationship of cytochrome oxidase activity of certain tissues to the body weight has been extended to include three species of large animals. In the comparison of rats, sheep, swine and cattle, the cytochrome oxidase activity of skeletal muscle (principally of the gracilis) was found to be roughly an inverse function of body weight. A logarithmic regression of –0.239 was calculated. Although the cytochrome oxidase activity per unit weight of liver in the sheep, swine and cattle series does not reflect the variation in body mass, the regression of the logarithm of total liver cytochrome oxidase activity on the logarithm of body weight was calculated to be 0.674. The data support the concept that the summated total measurable cytochrome oxidase activity is very nearly proportional to body weight to the 3/4 power and, hence, to basal metabolism.

scholarly journals Ultrastructural analysis of cytochrome oxidase in chick epiphyseal growth plate cartilage.

1988 ◽  
Vol 36 (9) ◽  
pp. 1161-1166 ◽  
Author(s):  
T Yamamoto ◽  
C V Gay
Keyword(s):  
Cytochrome Oxidase ◽  
Growth Plate ◽  
Oxidative Metabolism ◽  
Anaerobic Metabolism ◽  
Epiphyseal Growth Plate ◽  
Growth Plate Cartilage ◽  
Proliferative Zone ◽  
Relationship Of ◽  
The Relationship ◽  
Aerobic And Anaerobic

Histochemical detection of cytochrome oxidase activity in chicken growth plate revealed both positively and negatively stained mitochondria in chondrocytes of all zones, i.e., proliferative, pre-hypertrophic, hypertrophic, and calcifying zones. The proportion of positive to negative cells was lowest in the proliferative zone. As cytodifferentiation progressed, more positively stained cells were present. In positive cells all mitochondria were usually stained, and in negative cells all mitochondria were unstained. A few cells appeared to be in transition and contained both types of mitochondria. The results indicate that chondrocytes utilizing both aerobic and anaerobic metabolism are present in growth plate cartilage and that oxidative metabolism is favored in the more mature cells. The relationship of oxidative metabolism to calcification is discussed.

The Relationship of Hydrogen Peroxide-Producing Lactobacilli to Bacterial Vaginosis and Genital Microflora in Pregnant Women

1992 ◽  
Vol 79 (3) ◽  
pp. 369-373 ◽  
Author(s):  
SHARON L. HILLIER ◽  
MARIJANE A. KROHN ◽  
SEYMOUR J. KLEBANOFF ◽  
DAVID A. ESCHENBACH
Keyword(s):  
Hydrogen Peroxide ◽  
Bacterial Vaginosis ◽  
Pregnant Women ◽  
Relationship Of ◽  
The Relationship

The relationship of hydrogen peroxide-producing lactobacilli to bacterial vaginosis and genital microflora in pregnant women

1992 ◽  
Vol 39 (2) ◽  
pp. 152-152
Author(s):  
SL Hillier ◽  
ME Krohn ◽  
SJ Klebanoff ◽  
DA Eschenbach
Keyword(s):  
Hydrogen Peroxide ◽  
Bacterial Vaginosis ◽  
Pregnant Women ◽  
Relationship Of ◽  
The Relationship

Studies on the Biosynthesis of Iodotyrosines: The Relationship of Peroxidase, Catalase and Cytochrome Oxidase

Endocrinology ◽  
1962 ◽  
Vol 70 (4) ◽  
pp. 505-510 ◽  
Author(s):  
LESLIE J. DEGROOT ◽  
ANN M. DAVIS
Keyword(s):  
Cytochrome Oxidase ◽  
Relationship Of ◽  
The Relationship

Stratospheric hydrogen peroxide: The relationship of theory and observation

1985 ◽  
Vol 90 (D6) ◽  
pp. 10726-10732 ◽  
Author(s):  
Peter S. Connell ◽  
Donald J. Wuebbles ◽  
Julius S. Chang
Keyword(s):  
Hydrogen Peroxide ◽  
Relationship Of ◽  
The Relationship

The Relationship of Hydrogen Peroxide Exposure Protocol to Bleaching Efficacy

2013 ◽  
Vol 38 (2) ◽  
pp. 177-185 ◽  
Author(s):  
SR Kwon ◽  
PW Wertz ◽  
DV Dawson ◽  
DS Cobb ◽  
G Denehy
Keyword(s):  
Hydrogen Peroxide ◽  
Linear Regression ◽  
Color Change ◽  
Linear Modeling ◽  
Tooth Color ◽  
Factors Affecting ◽  
Pulp Cavity ◽  
Relationship Of ◽  
The Relationship

SUMMARY The purpose of this study was to compare two in-office bleaching methods with respect to tooth color change and level of hydrogen peroxide penetration into the pulp cavity and to evaluate relationships between penetration level and color change. Eighty extracted canines were exposed to two different bleaching regimens (conventional vs sealed bleaching technique). After exposure to 38% hydrogen peroxide gel for one hour, hydrogen peroxide amount was estimated spectrophotometrically. Color change was measured per Commission Internationale de l'Eclairage methodology. Linear regression was used to evaluate factors affecting color change, including bleaching technique. The conventional and sealed bleaching groups showed no difference for any color change parameters (ΔL, Δa, Δb, ΔE); however, there was significantly greater hydrogen peroxide penetration in the conventional bleaching group (p<0.05). Linear modeling of the change in lightness (ΔL) showed that the increase in lightness tended to be greater for teeth with lower initial L* values (r=−0.32, p<0.05). After adjustment for initial L*, there was no evidence that ΔL differed with hydrogen peroxide penetration levels (p>0.05) or bleaching technique (mean group difference in ΔL=0.36; p>0.05).

The relationship of the scleractinian corals to the rugose corals

Paleobiology ◽  
1980 ◽  
Vol 6 (02) ◽  
pp. 146-160 ◽  
Author(s):  
William A. Oliver
Keyword(s):  
Critical Points ◽  
Scleractinian Corals ◽  
Convincing Evidence ◽  
Early Triassic ◽  
Rugose Corals ◽  
History Of ◽  
The Subject ◽  
Relationship Of ◽  
The Relationship ◽  
Biologic Factors

The Mesozoic-Cenozoic coral Order Scleractinia has been suggested to have originated or evolved (1) by direct descent from the Paleozoic Order Rugosa or (2) by the development of a skeleton in members of one of the anemone groups that probably have existed throughout Phanerozoic time. In spite of much work on the subject, advocates of the direct descent hypothesis have failed to find convincing evidence of this relationship. Critical points are:(1) Rugosan septal insertion is serial; Scleractinian insertion is cyclic; no intermediate stages have been demonstrated. Apparent intermediates are Scleractinia having bilateral cyclic insertion or teratological Rugosa.(2) There is convincing evidence that the skeletons of many Rugosa were calcitic and none are known to be or to have been aragonitic. In contrast, the skeletons of all living Scleractinia are aragonitic and there is evidence that fossil Scleractinia were aragonitic also. The mineralogic difference is almost certainly due to intrinsic biologic factors.(3) No early Triassic corals of either group are known. This fact is not compelling (by itself) but is important in connection with points 1 and 2, because, given direct descent, both changes took place during this only stage in the history of the two groups in which there are no known corals.

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