Zobrazeno 1 - 10
of 67
pro vyhledávání: '"Richard G. Hansford"'
Autor:
R. Michael Anson, Richard G. Hansford
Publikováno v:
Aging Cell. 3:29-34
Summary Virtually every model of mitochondrial involvement in aging shares the underlying proposition that mitochondrial dysfunction will accelerate the rate of aging. Caenorhabditis elegans is a post-mitotic organism with limited capacity for replac
Autor:
George S. Roth, Richard G. Spencer, Richard G. Hansford, Alena Horská, Larry J. Brant, Donald K. Ingram
Publikováno v:
American Journal of Physiology-Endocrinology and Metabolism. 276:E766-E773
We evaluated the hypothesis that long-term caloric restriction and exercise would have beneficial effects on muscle bioenergetics and performance in the rat. By themselves, each of these interventions is known to increase longevity, and bioenergetic
Publikováno v:
American Journal of Physiology-Heart and Circulatory Physiology. 276:H149-H158
Aberrations in cell Ca2+homeostasis have been known to parallel both changes in membrane lipid composition and aging. Previous work has shown that the lowered efficiency of work performance, which occurs in isolated hearts from rats fed a diet rich i
Publikováno v:
Biochimica et Biophysica Acta (BBA) - Bioenergetics. 1365:522-530
We studied the interaction between energy metabolism and mitochondrial biogenesis during myogenesis in C2C12 myoblasts. Metabolic rate was nearly constant throughout differentiation, although there was a shift in the relative importance of glycolytic
Autor:
Colette M. J. Ap Rhys, Edgar K. Hudson, Richard G. Hansford, Vilhelm A. Bohr, Grigory L. Dianov, Deborah L. Croteau
Publikováno v:
Journal of Biological Chemistry. 272:27338-27344
Reactive oxygen species have been shown to generate mutagenic lesions in DNA. One of the most abundant lesions in both nuclear and mitochondrial DNA is 7,8-dihydro-8-oxoguanine (8-oxoG). We report here the partial purification and characterization of
Publikováno v:
Journal of Bioenergetics and Biomembranes. 29:89-95
We have examined the substrate specificity and inhibitor sensitivity of H2O2 formation by rat heart mitochondria. Active H2O2 production requires both a high fractional reduction of Complex I (indexed by NADH/NAD+ + NADH ratio) and a high membrane po
Autor:
Michio Tamatani, Irina Kudryashova, Charles R. Filburn, Richard G. Hansford, Wade Edris, Barbara A. Hogue
Publikováno v:
Mechanisms of Ageing and Development. 87:35-46
Deletions in human mitochondrial DNA cause various mitochondrial myopathies and increase markedly with age in highly oxidative tissues, but exhibit a differential distribution in the brain. In order to determine whether a similar pattern occurs in ra
Publikováno v:
Anesthesiology. 80:372-382
Background: Cardiac cellular Ca metaboliam is central to the control of the inotropic state of the heart and is altered in various ways by the volatile anesthetics halothane, enflurane and isoflurane. Specifically, differences among the agents regard
Publikováno v:
American Journal of Physiology-Heart and Circulatory Physiology. 264:H2188-H2197
The fraction of total pyruvate dehydrogenase in the active, dephosphorylated form is much lower in the glucose-perfused isolated hearts of two myopathic strains of Syrian hamster (BIO 14.6 and TO-2) than in the hearts of healthy control animals (F1B)
Autor:
O. Y. Chung, Maurizio C. Capogrossi, Richard G. Hansford, Michael D. Stern, Barbara A. Hogue, H. S. Silverman, Paul S. Blank, Edward G. Lakatta
Publikováno v:
American Journal of Physiology-Heart and Circulatory Physiology. 263:H276-H284
This study examines the use of carboxy-seminaphthorhodafluor-1 (C-SNARF-1) as an indicator of cytosolic pH in isolated rat cardiac myocytes. The emission spectrum of C-SNARF-1 when excited at 530 nm contains two well-separated peaks at approximately