Hydrogen-Ion Concentration - Research News and Information

Saturday, January 10, 2009

Acidosis induces multi-drug resistance in rat prostate cancer cells (AT1) in vitro and in vivo by increasing the activity of the p-glycoprotein via activation of p38.

29 Nov 2008 Because solid growing tumors often show hypoxia and pronounced extracellular acidosis, the aim of this study was to analyze the impact of an acidotic environment on the activity of the p-glycoprotein (pGP) and on the cellular content and ... Read more...

Modulation of Na+-H+ exchange isoforms NHE1 and NHE3 by insulin-like growth factor-1 in isolated bovine articular chondrocytes.

30 Oct 2008 Incubation with serum modulates the transporters that regulate intracellular pH (pH(i)) in articular chondrocytes, upregulating acid extrusion by Na(+)-H(+) exchange (NHE). There is stimulation of NHE1, together with induction of NHE3 activity. ... Read more...

Microbiological and geochemical dynamics in simulated-heap leaching of a polymetallic sulfide ore.

30 Oct 2008 The evolution of microbial populations involved in simulated-heap leaching of a polymetallic black schist sulfide ore (from the recently-commissioned Talvivaara mine, Finland) was monitored in aerated packed bed column reactors over a period of 40 ... Read more...

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Latest indexed articles for 'Hydrogen-Ion Concentration'

These are the very latest articles for this heading:

• Acidosis induces multi-drug resistance in rat prostate cancer cells (AT1) in vitro and in vivo by increasing the activity of the p-glycoprotein via activation of p38. 29 Nov 2008
• Modulation of Na+-H+ exchange isoforms NHE1 and NHE3 by insulin-like growth factor-1 in isolated bovine articular chondrocytes. 30 Oct 2008
• Microbiological and geochemical dynamics in simulated-heap leaching of a polymetallic sulfide ore. 30 Oct 2008
• Detailing the role of Bax translocation, cytochrome c release, and perinuclear clustering of the mitochondria in the killing of HeLa cells by TNF. 30 Oct 2008
• Internalization and degradation of heparin is not required for stimulus of heparan sulfate proteoglycan synthesis. 30 Oct 2008
• Anaerobic methanethiol degradation and methanogenic community analysis in an alkaline (pH 10) biological process for liquefied petroleum gas desulfurization. 30 Oct 2008
• Evidence for nickel/proton antiport activity at the tonoplast of the hyperaccumulator plant Alyssum lesbiacum. 30 Oct 2008
• Phenotypic screening, transcriptional profiling, and comparative genomic analysis of an invasive and non-invasive strain of Candida albicans. 22 Oct 2008
• Lipidation of Atg8: how is substrate specificity determined without a canonical E3 enzyme? 19 Oct 2008
• The pH sensor for flavivirus membrane fusion. 18 Oct 2008
• Identification of specific histidines as pH sensors in flavivirus membrane fusion. 18 Oct 2008
• Glycation improves the thermostability of trypsin and chymotrypsin. 13 Oct 2008
• Formation of an unfolding intermediate state of soluble chloride intracellular channel protein CLIC1 at acidic pH. 12 Oct 2008
• Molecular studies of pH-dependent ligand interactions with the low-density lipoprotein receptor. 9 Oct 2008
• Structural characterization of a thiazoline-containing chromophore in an orange fluorescent protein, monomeric Kusabira Orange. 8 Oct 2008
• Pushing and pulling the cardiac sodium/hydrogen exchanger. 8 Oct 2008
• Conformationally gated metal uptake by apomanganese superoxide dismutase. 7 Oct 2008
• Human alkyladenine DNA glycosylase employs a processive search for DNA damage. 6 Oct 2008
• Structural changes due to the deprotonation of the proton release group in the M-photointermediate of bacteriorhodopsin as revealed by time-resolved FTIR spectroscopy. 5 Oct 2008
• Hypothalamic orexins/hypocretins as regulators of breathing. 30 Sep 2008

See a longer list of these articles.

Technical information about 'Hydrogen-Ion Concentration'

Definition: The normality of a solution with respect to HYDROGEN ions; H+. It is related to acidity measurements in most cases by pH = log 1/2[1/(H+)], where (H+) is the hydrogen ion concentration in gram equivalents per liter of solution. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)

Descriptor UI: D006863

Alternative terms: Hydrogen-Ion Concentration; Concentration, Hydrogen-Ion; Concentrations, Hydrogen-Ion; Hydrogen Ion Concentration; Hydrogen-Ion Concentrations; pH;

Related Mesh Headings: Buffers;

Allowable Qualifiers: drug effects; radiation effects;

Tree Number: G02.300;

Technical Notes: NIM