ribose/fever

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Alteration of poly(ADP-ribose) metabolism by hyperthermia.

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The intracellular levels of poly(ADP-ribose) in cultured mouse cells were increased in response to hyperthermic treatment (43 degrees C). When hyperthermia was combined with other stressful treatments such as with ethanol and/or an alkylating agent, a dramatic synergistic increase in polymer levels

Inhibitors of poly(ADP-ribose) synthetase enhance the cytotoxicity of 42 degrees C and 45 degrees C hyperthermia in cultured Chinese hamster cells.

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Two inhibitors of poly(ADP-ribose) synthetase, 5-methylnicotinamide and m-methoxybenzamide, enhanced the cytotoxicity of 42 degrees C and 45 degrees C hyperthermia in cultured Chinese hamster V79 cells. The inhibitors showed minimal toxicity for cells treated at 37 degrees C, and did not appreciably

Effect of hyperthermia and doxorubicin on nucleoid sedimentation and poly (ADP-ribose) polymerase activity in L1210 cells.

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We report on the individual and combined effects of doxorubicin (DOX) and hyperthermia (HYP) on nucleoid sedimentation and poly (ADP-ribose) polymerase (PARP) activity of L1210 cells. The effects of HYP and DOX on nucleoid sedimentation (increased sedimentation) were similar and correlated with cell

Effect of hyperthermia on poly(adenosine diphosphate-ribose) glycohydrolase.

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The effects of supranormal temperature on the activity of poly(ADP-ribose) glycohydrolase were studied by assaying the enzyme in cell extracts derived from cells subjected to hyperthermia and comparing with extracts that were heated in vitro. The enzyme activity was reduced by both hyperthermic

Mechanism of alteration of poly(adenosine diphosphate-ribose) metabolism by hyperthermia.

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The effects of hyperthermia on adenine nucleotide metabolism including NAD and poly(ADP-ribose) have been studied in confluent cultures of C3H10T1/2 cells. Cells replated immediately following hyperthermic treatment showed only 9% survival relative to controls while after a 24-h recovery period at

Cyclic ADP-ribose induces a larger than normal calcium release in malignant hyperthermia-susceptible skeletal muscle fibers.

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Malignant hyperthermia (MH) is associated with abnormal regulation of intracellular calcium in skeletal muscle fibers. Cyclic adenosine diphosphate-ribose (cADPR) is an endogenous metabolite of beta-NAD+ that induces Ca2+ release from intracellular stores in many tissues. Microinjection of cADPR

Mild hyperthermia inhibits homologous recombination, induces BRCA2 degradation, and sensitizes cancer cells to poly (ADP-ribose) polymerase-1 inhibition.

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Defective homologous recombination (HR) DNA repair imposed by BRCA1 or BRCA2 deficiency sensitizes cells to poly (ADP-ribose) polymerase (PARP)-1 inhibition and is currently exploited in clinical treatment of HR-deficient tumors. Here we show that mild hyperthermia (41-42.5 °C) induces degradation

Colorado tick fever virus in cell culture. II. Physical and chemical properties.

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Trent, Dennis W. (University of Oklahoma School of Medicine, Oklahoma City), and L. Vernon Scott. Colorado tick fever virus in cell culture. II. Physical and chemical properties. J. Bacteriol. 91:1282-1288. 1966.-Heat-inactivation kinetics for Colorado tick fever (CTF) virus grown in L cells

Enhancing radiosensitisation of BRCA2-proficient and BRCA2-deficient cell lines with hyperthermia and PARP1-i.

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Poly(ADP-ribose)polymerase1 (PARP1) is an important enzyme in regulating DNA replication. Inhibition of PARP1 can lead to collapsed DNA forks which subsequently causes genomic instability, making DNA more susceptible in developing fatal DNA double strand breaks. PARP1-induced DNA damage is generally

Chemical properties of lipopolysaccharides from spotted fever group rickettsiae and their common antigenicity with lipopolysaccharides from Proteus species.

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The lipopolysaccharides (LPS) isolated from spotted fever group (SFG) rickettsia strains Thai tick typhus TT-118 and Katayama were characterized by chemical analyses, sodium dodecyl sulfate-polyacrylamide gel electrophoresis, enzyme-linked immunosorbent assay (ELISA), and immunoblotting. These LPS

Oxytocin release via activation of TRPM2 and CD38 in the hypothalamus during hyperthermia in mice: Implication for autism spectrum disorder.

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Oxytocin (OT) is a critical molecule for social recognition that mediates social and emotional behaviors. OT is released during stress and acts as an anxiolytic factor. To know the precise molecular mechanisms underlying OT release into the brain during stress is important. It has been reported that

Radiosensitization of human T-cell leukemia by thymidine and 41.8 degrees C hyperthermia in vitro.

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This study tested whether thymidine, a naturally occurring nucleoside metabolite, could increase the sensitivity of human T-cell neoplasms to ionizing irradiation and whether adding 41.8 degrees C hyperthermia (X 1 h) to the combination of thymidine and irradiation would further enhance killing of

Sensitization to CD95 ligand-induced apoptosis in human glioma cells by hyperthermia involves enhanced cytochrome c release.

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CD95L-induced apoptosis involves caspase activation and is facilitated when RNA and protein synthesis are inhibited. Here, we report that hyperthermia sensitizes malignant glioma cells to CD95L- and APO2L-induced apoptosis in the absence, but not in the presence, of inhibitors of RNA and protein

Menstrual cycle-dependent febrile episode mediated by sequence-specific repression of poly(ADP-ribose) polymerase-1 on the transcription of the human serotonin receptor 1A gene.

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The serotonin receptor 1A (encoded by the HTR1A gene) plays a critical role in serotonergic transmission and was linked with many human diseases. A 33-year-old woman with rare menstrual cycle-dependent fever showed abnormal estrogen profile and responded well to the HTR1A agonist buspirone,

Poly(ADP-ribose)polymerase-activity of chicken embryo cells exposed to nucleotoxic agents.

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Poly(ADP-ribose)polymerase (PARP)-activity was assessed in vitro from the incorporation of the adenosine-diphosphate-ribose moiety of 14C-NAD+ in the acid-insoluble cell fraction. When compared to mammalian (rat) cells, chicken embryo cells exhibit an almost three- to fourfold higher constitutive

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