Stimulation of the Synthesis of Inner Mitochondrial Membrane Proteins in Rat Liver by Cuprizone

1973 ◽  
pp. 523-537
Author(s):  
Néstor F. González-Cadavid ◽  
Flor Herrera ◽  
Alba Guevara ◽  
Aíxa Viera
Keyword(s):  
Membrane Proteins ◽  
Rat Liver ◽  
Mitochondrial Membrane ◽  
Inner Mitochondrial Membrane ◽  
Stimulation Of

01 A proteomic database of rat liver inner mitochondrial membrane proteins

2002 ◽  
Vol 34 (7) ◽  
pp. A29
Author(s):  
Todd McDonald ◽  
Irina Neverova ◽  
Young Ko ◽  
Pete L. Pedersen ◽  
Jennifer E. Van Eyk
Keyword(s):  
Membrane Proteins ◽  
Rat Liver ◽  
Mitochondrial Membrane ◽  
Inner Mitochondrial Membrane

scholarly journals Uptake of protoporphyrin IX by isolated rat liver mitochondria

1980 ◽  
Vol 188 (2) ◽  
pp. 329-335 ◽  
Author(s):  
M E Koller ◽  
I Romslo
Keyword(s):  
Rat Liver ◽  
Mitochondrial Membrane ◽  
Protoporphyrin Ix ◽  
Liver Mitochondria ◽  
Rat Liver Mitochondria ◽  
Inner Mitochondrial Membrane ◽  
Erythropoietic Protoporphyria ◽  
Inner Membrane ◽  
Isolated Rat Liver ◽  
Isolated Rat

Rat liver mitochondria accumulate protoporphyrin IX from the suspending medium into the inner membrane in parallel with the magnitude of the transmembrane K+ gradient (K+in/K+out). Only protoporphyrin IX taken up in parallel with the transmembrane K+ gradient is available for haem synthesis. Coproporphyrins (isomers I and III) are not taken up by the mitochondria. The results support the suggestion by Elder & Evans [(1978) Biochem. J. 172, 345-347] that the prophyrin to be taken up by the inner mitochondrial membrane belongs to the protoporphyrin(ogen) IX series. Protoporphyrin IX at concentrations above 15 nmol/mg of protein has detrimental effects on the structural and functional integrity of the mitochondria. The relevance of these effects to the hepatic lesion in erythropoietic protoporphyria is discussed.

Phospholipid topology of the inner mitochondrial membrane of rat liver

Biochemistry ◽  
1979 ◽  
Vol 18 (11) ◽  
pp. 2407-2414 ◽  
Author(s):  
Richard C. Crain ◽  
Guido V. Marinetti
Keyword(s):  
Rat Liver ◽  
Mitochondrial Membrane ◽  
Inner Mitochondrial Membrane

scholarly journals The maturation of the inner membrane of foetal rat liver mitochondria. An example of a positive-feedback mechanism

1975 ◽  
Vol 150 (3) ◽  
pp. 477-488 ◽  
Author(s):  
J K Pollak
Keyword(s):  
Oxidative Phosphorylation ◽  
Rat Liver ◽  
Mitochondrial Membrane ◽  
Respiratory Control ◽  
Liver Mitochondria ◽  
Neonatal Rat ◽  
Rat Liver Mitochondria ◽  
Inner Mitochondrial Membrane ◽  
Mature Adult ◽  
Foetal Rat

A new method was devised for the isolation of foetal and neonatal rat lvier mitochondria, giving higher yields than conventional methods. 2. During development from the perinatal period to the mature adult, the ratio of cytochrome oxidase/succinate-cytochrome c reductase changes. 3. The inner mitochondrial membrane of foetal liver mitochondria possesses virtually no osmotic activity; the permeability to sucrose decreases with increasing developmental age. 4. Foetal rat liver mitochondria possess only marginal respiratory control and do not maintain Ca2+-induced respiration; they also swell in respiratory-control medium in the absence of substrate. ATP enhances respiratory control and prevents swelling, adenylyl imidodiphosphate, ATP+atractyloside enhance the R.C.I. (respiratory control index), Ca2+-induced respiratory control and prevent swelling, whereas GTP and low concentrations of ADP have none of these actions. It is concluded that the effect of ATP depends on steric interaction with the inner mitochondrial membrane. 5. When 1-day pre-partum foetuses are obtained by Caesarean section and maintained in a Humidicrib for 90 min, mitochondrial maturation is ‘triggered’, so that their R.C.I. is enhanced and no ATP is required to support Ca2+-dependent respiratory control or to inhibit mitochondrial swelling. 6. It is concluded that foetal rat liver mitochondria in utero do not respire, although they are capable of oxidative phosphorylation in spite of their low R.C.I. The different environmental conditions which the neonatal rat encounters ex utero enable the hepatic mitochondria to produce ATP, which interacts with the inner mitochondrial membrane to enhance oxidative phosphorylation by an autocatalytic mechanism.

scholarly journals Intramitochondrial localization of δ-aminolaevulate synthetase and ferrochelatase in rat liver

1969 ◽  
Vol 114 (3) ◽  
pp. 455-461 ◽  
Author(s):  
Roxane McKay ◽  
R. Druyan ◽  
G. S. Getz ◽  
M. Rabinowitz
Keyword(s):  
Glutamate Dehydrogenase ◽  
Density Gradient ◽  
Malate Dehydrogenase ◽  
Rat Liver ◽  
Mitochondrial Biogenesis ◽  
Mitochondrial Membrane ◽  
Density Gradient Centrifugation ◽  
Gradient Centrifugation ◽  
Differential Centrifugation ◽  
Inner Mitochondrial Membrane

Intramitochondrial loci for δ-aminolaevulate synthetase and ferrochelatase, the initial and final enzymes in haem synthesis, have been found in rat liver. Two different methods of fractionation were applied to mitochondria: (a) sonication and density-gradient centrifugation; (b) treatment with digitonin and differential centrifugation. Similar results were obtained with each technique. δ-Aminolaevulate synthetase is distributed similarly to two known matrix enzymes, malate dehydrogenase and glutamate dehydrogenase. Ferrochelatase is firmly bound to the the inner mitochondrial membrane. These results are considered in terms of the regulation of haem synthesis and in relation to mitochondrial biogenesis.

Accumulation of D-arginine by rat liver mitochondria

1987 ◽  
Vol 65 (12) ◽  
pp. 1057-1063 ◽  
Author(s):  
Rafael Villalobos-Molina ◽  
J. Pablo Pardo ◽  
Alfredo Saavedra-Molina ◽  
Enrique Piña
Keyword(s):  
Membrane Potential ◽  
Rat Liver ◽  
Mitochondrial Respiration ◽  
Mitochondrial Membrane ◽  
Liver Mitochondria ◽  
Rat Liver Mitochondria ◽  
Inner Mitochondrial Membrane ◽  
Osmotic Swelling ◽  
Dose Dependent Fashion ◽  
Dose Dependent

The permeability of the inner mitochondrial membrane from rat liver to D-arginine was studied. By using safranin as a probe of the membrane potential, depolarization of energized liver mitochondria occurred in a dose-dependent fashion starting at 3.3 mmol/L of D- or DL-arginine. When ethidium bromide fluorescence was employed, a decrease in the membrane potential due to D- or DL-arginine was observed. A parallel significant change in succinate-induced respiration in rat liver mitochondria was found in response to osmotic swelling in 125 mmol/L of D-arginine salts. L-Arginine, L-glutamine, L-asparagine, L-ornithine, D-ornithine, and L-lysine did not modify the membrane potential at the concentrations tested. D-Arginine was not transformed into citrulline, but 1.0 mmol/L of the D-amino acid inhibited, by 42%, the state 3 of mitochondrial respiration using succinate as substrate. When D-arginine was used in combination with nigericin, a 40% inhibition of mitochondrial respiration in state 3 was recorded with succinate and with glutamate–malate as substrates.

Stimulation of apoptosis by sulindac and piroxicam

1998 ◽  
Vol 95 (3) ◽  
pp. 385-388 ◽  
Author(s):  
William R. WADDELL
Keyword(s):  
Acetic Acid ◽  
Mitochondrial Membrane ◽  
Prostaglandin Synthesis ◽  
Intermembrane Space ◽  
Colon Polyps ◽  
Inner Mitochondrial Membrane ◽  
Normal Cells ◽  
Inhibition Of Prostaglandin Synthesis ◽  
Stimulation Of

1.Sulindac, cis-5-fluoro-2-methyl-1-(p-methylsulphinylbenzylidene)indene-3-acetic acid, inhibits growth of colon polyps and cancers. This effect has been attributed to inhibition of prostaglandin synthesis but more recent observations indicate that, in vitro, cells that do not have cyclo-oxygenase nor RNA for synthesis of such enzymes are affected by sulindac. Therefore the presumptive effect is probably not correct. 2.It has also been found that sulindac stimulates apoptosis. It is herein postulated that in tumour cells such effects may be due to interaction of the anionic form of the drug with protons in the intermembrane space of mitochondria to disrupt the potential across the inner mitochondrial membrane and thereby initiate apoptosis. Normal cells are not affected.

scholarly journals Structural properties of phospholipids in the rat liver inner mitochondrial membrane. A 31P-NMR study

1980 ◽  
Vol 600 (3) ◽  
pp. 625-635 ◽  
Author(s):  
P.R. Cullis ◽  
B. de Kruijff ◽  
M.J. Hope ◽  
R. Nayar ◽  
A. Rietveld ◽  
...  
Keyword(s):  
Structural Properties ◽  
Rat Liver ◽  
Mitochondrial Membrane ◽  
31P Nmr ◽  
Inner Mitochondrial Membrane ◽  
Nmr Study
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