For over 60 years, a distinction has been made between aerobic and anaerobic glycolysis based on their respective end products: pyruvate of the former, lactate of the latter. Recently we hypothesized that, in the brain, both aerobic and anaerobic glycolysis terminate with the formation of lactate from pyruvate by the enzyme lactate dehydrogenase (LDH). If this hypothesis is correct, lactate mus...

Integrating biological information from different sources to understand cellular processes is an important problem in systems biology. We use data from mRNA expression arrays and chemical kinetics to formulate a metabolic model relevant to K562 erythroleukemia cells. MAP kinase pathway activation alters the expression of metabolic enzymes in K562 cells. Our array data show changes in expression...

Serum from a patient with hepatocellular carcinoma contained an abnormal isoenzyme of lactate dehydrogenase (LDH; EC 1.1.1.27), LDH-1ex, that on electrophoresis on 10-g/L agarose gel migrated anodally to the LDH-1 band. This isoenzyme was partly purified by ultrafiltration and preparative electrophoresis. Gel chromatography and sodium dodecyl sulfate/polyacrylamide gel electrophoresis studies o...

BACKGROUND Serum lactate dehydrogenase (LDH) is elevated in various diseases. OBJECTIVES To analyze serum LDH as a distinguishing clinical biomarker and as a predictor of in-hospital outcome in admitted medical patients. METHODS We analyzed a cohort of all 158 patients with very high isolated LDH (LDH > or = 800 IU/ml without concomitant elevations of alanine aminotransferase and aspartate ...

Serum total lactate dehydrogenase (LDH) was estimated serially for up to 15 days in 110 patients with head injuries who had no extraneural injury. Increase in LDH activity generally indicated the degree of parenchymal brain damage. The prognostic value of LDH was established by correlating its activity with clinical criteria such as duration of unconsciousness and post-traumatic amnesia, type o...

Whole body Co60 gamma radiation induced changes in lactic dehydrogenase (LDH) activity, pyruvate, lactate content and rate of oxygen (O2) consumption in a tropical hibernating anuran (Bufo melanostictus). In 3.5 and 7 Gy treated groups, a significant increase in LDH activity and lactate/pyruvate ratio was observed, whereas a significant decrease in O2 consumption rate was observed in treated an...

Commercially available diagnostic tools for the detection of lactate dehydrogenase elevating virus (LDV) infection have been restricted to measurement of serum lactate dehydrogenase (LDH) activity levels and detection of the viral genome by RT-PCR assays. Serologic diagnosis of LDV infection has not been widely adopted due to the belief that the formation of antigen-antibody complexes and B-cel...

The purpose of this present study was to differentiate transudates and exudates in pleural effusions. Oxidative stress has been associated with various respiratory disorders. Ninety patients of pleural effusions of diverse etiologies were participated in this study. Subjects underwent diagnostic thoracentesis and standard biochemical parameters (total protein, lactate dehydrogenase, glucose, MD...

how to cite this article: khosroshahi n, alizadeh p, khosravi m, salamati p, kamrani k. spinal fluid lactate dehydrogenase level differentiates between structural and metabolic etiologies of altered mental status in children. iran j child neurol. 2015 winter;9(1):31-36. abstract objective altered mental status is a common cause of intensive care unit admission in children. differentiating struc...

The concentration of carbon sources has a significant influence on the growth, carbohydrate uptake and metabolite distribution in Clostridium thermohydrosulfuricum. The growing concentrations of glucose or starch increase the production of ethanol and lactate, the intracellular fructose-1,6-diphosphate (FDP) and the specific activity of lactate dehydrogenase (LDH), but decrease the ethanol/lact...