نتایج جستجو برای: الگوریتم dca

تعداد نتایج: 24252  

2013
Yu Duan Xin Zhao Wei Ren Xin Wang Ke-Fu Yu Dan Li Xuan Zhang Qiang Zhang

Dichloroacetate (DCA), a small molecule mitochondria-targeting agent, can penetrate the blood-brain barrier, showing potential therapeutic effects on brain tumors. Considering the effects of DCA on tumor cellular metabolism, penetrating across the blood-brain barrier, as well as having potential antitumor activity on brain tumors, the purpose of this study is to investigate the antitumor activi...

2014
Rakesh K. Pathak Sean Marrache Donald A. Harn Shanta Dhar

Tumor growth is fueled by the use of glycolysis, which normal cells use only in the scarcity of oxygen. Glycolysis makes tumor cells resistant to normal death processes. Targeting this unique tumor metabolism can provide an alternative strategy to selectively destroy the tumor, leaving normal tissue unharmed. The orphan drug dichloroacetate (DCA) is a mitochondrial kinase inhibitor that has the...

2017
Nathan P Ward Angela M Poff Andrew P Koutnik Dominic P D'Agostino

The robust glycolytic metabolism of glioblastoma multiforme (GBM) has proven them susceptible to increases in oxidative metabolism induced by the pyruvate mimetic dichloroacetate (DCA). Recent reports demonstrate that the anti-diabetic drug metformin enhances the damaging oxidative stress associated with DCA treatment in cancer cells. We sought to elucidate the role of metformin's reported acti...

2015
Alexis Valauri-Orton Frizzi Bschorer Karen K. Bernd

Dichloroacetate (DCA) is a water purification byproduct that is known to be hepatotoxic and hepatocarcinogenic and to induce peripheral neuropathy and damage macrophages. This study characterizes the effects of the haloacetate on lung cells by exposing rat alveolar type II (L2) cells to 0-24 mM DCA for 6-24 hours. Increasing DCA concentration and the combination of increasing DCA concentration ...

2003
Janne Kurjenniemi Otto Lehtinen

Dynamic Channel Allocation (DCA) has been seen as a promising method for improving quality and capacity in cellular networks. In theoretical studies very significant quality and capacity improvements has been achieved. However, in real systems DCA performance is limited by several factors so theoretical limits might not be reached. To exploit full possibilities of TDD system efficient DCA algor...

Journal: :Journal of inorganic biochemistry 2016
Juraj Zajac Hana Kostrhunova Vojtech Novohradsky Oldrich Vrana Raji Raveendran Dan Gibson Jana Kasparkova Viktor Brabec

The molecular and cellular mechanisms of enhanced toxic effects in tumor cells of the Pt(IV) derivatives of antitumor oxaliplatin containing axial dichloroacetate (DCA) ligands were investigated. DCA ligands were chosen because DCA has shown great potential as an apoptosis sensitizer and anticancer agent reverting the Wartburg effect. In addition, DCA reverses mitochondrial changes in a wide ra...

Journal: :J. Parallel Distrib. Comput. 2001
Xuefeng Dong Ten-Hwang Lai

In dynamic carrier allocation (DCA) strategies, carriers are assigned priorities. Based upon how priorities are assigned to carriers, DCA strategies are classified into three classes: static-priority, dynamic-priority, and hybrid-priority strategies. In this paper, we lay out a theoretical foundation for DCA strategies: we first develop the concept of optimal reuse pattern and then propose a mo...

Journal: :The Journal of pharmacology and experimental therapeutics 2011
Wenjun Li Margaret O James Sarah C McKenzie Nigel A Calcutt Chen Liu Peter W Stacpoole

Dichloroacetate (DCA) is a potential environmental hazard and an investigational drug. Repeated doses of DCA result in reduced drug clearance, probably through inhibition of glutathione transferase ζ1 (GSTZ1), a cytosolic enzyme that converts DCA to glyoxylate. DCA is known to be taken up by mitochondria, where it inhibits pyruvate dehydrogenase kinase, its major pharmacodynamic target. We test...

Journal: :Toxicological sciences : an official journal of the Society of Toxicology 2000
S E George G M Nelson A E Swank L R Brooks K Bailey M George A DeAngelo

Human consumption of chlorinated drinking water has been linked epidemiologically to bladder, kidney, and rectal cancers. The disinfection by-product (DBP) dichloroacetic acid is a hepatocarcinogen in Fischer 344 rats and B6C3F1 mice. The objective of this study is to determine the effect of the DBPs dichloro-, bromochloro-, and dibromoacetic acids (DCA, BCA, DBA) on intestinal microbial popula...

Journal: :Biochemical pharmacology 1982
J C Fantone S L Kunkel B Weingarten

In summary, following a single oral dose of DCA to laboratory rats, peak hepatic tissue DCA concentration occurred at 3 hr. When given chronically for 7 days, DCA caused activation of the pyruvate dehydrogenase complex which returned to basal activity 24 hr following the final dose. Hepatic tissue DCA concentrations were maximally increased at 3 hr following the final dose, and the drug was eli...

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