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agriculture
L-leucine depletion decreases the proteins synthesis, and also decreases L-lactate dehydrogenase B chain mRNA expression in bovine mammary alveolar cells
analysis
CpLDH with APAD+ may be useful as a diagnostic tool for detection of protozoan parasite Cryptosporidium
analysis
construction of multiplexed direct electron transfer-type lactate and glucose sensors using a fusion enzyme between L-lactate oxidase from Aerococcus viridans, A96L/N212K mutant, which is minimized in its oxidase activity and b-type cytochrome protein. The sensors achieve simultaneous detection of lactate and glucose without cross-talking error, with the detected linear ranges of 0.5-20 mM for lactate and 0.1-5 mM for glucose, sensitivities of 4.1 nA/mM x mm2 for lactate and 56 nA/mM x mm2 for glucose, and limit of detections of 0.41 mM for lactate and 0.057 mM for glucose
analysis
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reproducible and validated LDH assay optimized for several cell types for application in clinical medicine and biomedical sciences. Assay is cost effective and allows for experiment-specific optimization
biotechnology
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a chimeric bifunctional enzyme composing of galactose dehydrogenase from Pseudomonas fluorescens and lactate dehydrogenase from Bacillus stearothermophilus is successfully constructed. The chimeric enzyme is able to recycle NAD with a continuous production of lactate without any externally added NADH
biotechnology
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genetic tools for use in Clostridium thermocellum that allow creation of unmarked mutations while using a replicating plasmid. The strategy employs counter-selections developed from the native C. thermocellum hpt gene and the Thermoanaerobacterium saccharolyticum tdk gene and is used to delete the genes for both lactate dehydrogenase (Ldh) and phosphotransacetylase (Pta)
biotechnology
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genetic tools for use in Clostridium thermocellum that allow creation of unmarked mutations while using a replicating plasmid. The strategy employs counter-selections developed from the native C. thermocellum hpt gene and the Thermoanaerobacterium saccharolyticum tdk gene and is used to delete the genes for both lactate dehydrogenase (Ldh) and phosphotransacetylase (Pta)
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degradation
direct conversion of switchgrass to ethanol without conventional pretreatment of the biomass is accomplished by deletion of lactate dehydrogenase and heterologous expression of a Clostridium thermocellum bifunctional acetaldehyde/alcohol dehydrogenase. Whereas wild-type Caldicellulosiruptor bescii lacks the ability to make ethanol, 70% of the fermentation products in the engineered strain are ethanol (12.8 mM ethanol directly from 2% wt/vol switchgrass) with decreased production of acetate by 38% compared with wild-type
degradation
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direct conversion of switchgrass to ethanol without conventional pretreatment of the biomass is accomplished by deletion of lactate dehydrogenase and heterologous expression of a Clostridium thermocellum bifunctional acetaldehyde/alcohol dehydrogenase. Whereas wild-type Caldicellulosiruptor bescii lacks the ability to make ethanol, 70% of the fermentation products in the engineered strain are ethanol (12.8 mM ethanol directly from 2% wt/vol switchgrass) with decreased production of acetate by 38% compared with wild-type
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diagnostics
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the enzyme is useful as marker for endometrial carcinoma
diagnostics
LDH levels might serve as a significant prognostic factor in high-risk patients with metastatic renal cell carcinoma (RCC) and a predictive factor associated with the response and survival benefit of the mTOR complex-1 (mTORC1) inhibitor temsirolimus. LDH is one of the risk factors included in the international prognostic index (IPI) and it is considered a strong predictor of survival of patients with aggressive lymphoid cancers. Serum LDH level inversely correlates with the survival of patients with small cell lung cancer (SCLC) and allows the selection of very high-risk patients. Serum LDH might be a useful marker for predicting global clinical outcomes in hepatocellular carcinoma patients treated with a tyrosine kinase inhibitor (sorafenib). The determination of serum LDH levels appears to be a helpful clinical tool also in the diagnosis of prostate cancer and in the control of androgenic treatment
diagnostics
low LDH affinity kinetics can be a diagnostic parameter for human breast cancer
drug development
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a selective lactate dehydrogenase inhibitor targeting the L-malate dehydrogenase function of Plasmodium falciparum and its corresponding tricarboxylic acid cycle provides an attractive therapeutic opportunity, in contrast to LDH targeting due to the functional similarity between human and parasite LDHs
drug development
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LDH is critically implicated in tumor growth and therefore considered to be an important target protein for antitumor metal complexes
drug development
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parasite LDH is a target for antimalarial compounds owing to structural and functional differences from the human isozymes
drug development
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LDH is a potential drug target and candidate antigen for immunodiagnosis (LDH can be recognized in serum from swine or patient infected with Taenia asiatica) and vaccine for taeniasis and viscero-cysticercosis caused by Taenia asiatica
drug development
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Sa-LDH-1 can become a potential drug target for antibiotics against Staphylococcus aureus
drug development
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the parasite enzyme is a potential target for antimalarial drugs
drug development
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LDH is critically implicated in tumor growth and therefore considered to be an important target protein for antitumor metal complexes
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medicine
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potential drug target for new antimalarials
medicine
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potential drug target for new antimalarials
medicine
potential drug target for new antimalarials
medicine
potential drug target for new antimalarials
medicine
structural characterization of the enzyme and active-site differences from the human lactate dehydrogenase may be useful for structural-based design of new treatments for toxoplasmic infections
medicine
suitable drug target for design of novel babesial chemotherapeutics
medicine
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serum LDH zymograms of patients can be used as prognostic marker, since they tend to reach the normal level during recovery signifying the effect of chemotherapy in hospitalized patients. Elevation along with the rise in total LDH activity may be used in the diagnosis and monitoring of tubercular pyothorax
medicine
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the enzyme is a target for treatment of cancer
medicine
LDH-5 is considered a highly promising target in cancer therapy, LDH-5 significance in the treatment and prognosis of neoplastic diseases
medicine
LDHB is a therapeutic target in cancer
medicine
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alpha-HBDH is an independent risk factor for systemic lupus erythematosus-related liver injury. alpha-HBDH level is significantly higher in the systemic lupus erythematosus-related liver injury patients than in the non-systemic lupus erythematosus-related liver injury patients. alpha-HBDH is positively correlated with levels of aspartate aminotransferase and lactate dehydrogenase, the aspartate aminotransferase/alanine aminotransferase ratio, and the systemic lupus erythematosus disease activity index 2000, and it is negatively correlated with albumin and C3. The optimal cutoff value of alpha-HBDH for distinguishing systemic lupus erythematosus patients with and without liver injury is 258.50 U/l, which provides a 60.94% sensitivity and a 94.67% specificity
medicine
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alpha-hydroxybutyrate dehydrogenase as an independent prognostic factor for mortality in hospitalized patients with COVID-19. Among 1751 patients with confirmed COVID-19, 15 patients (0.87%) died. The mortality during hospitalization was 0.26% for patients with normal alpha-HBDH levels and 5.73% for those with elevated alpha-HBDH levels
medicine
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HBDH is associated with atherothrombotic events in 83 stable patients undergoing infrainguinal angioplasty and stenting. HBDH levels at baseline are significantly higher in patients who subsequently developed the primary endpoint. HBDH can distinguish between patients without and with future atherothrombotic events. A HBDH concentration at/above 115 U/l is the best threshold to predict the composite endpoint, providing a sensitivity of 83.3% and a specificity of 71.4%, and is therefore defined as high HBDH. Ischemic events occur significantly more often in patients with high HBDH than in patients with lower HBDH levels
synthesis
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development of yeast-based bioprocesses to produce lactate from lignocellulosic raw material
synthesis
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the enzyme has a commercial significance, as it can be used to produce chiral building blocks for the synthesis of key pharmaceuticals and agrochemicals, optimization of enzyme reaction by engineering to eliminate the substrate inhibition
synthesis
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the enzyme might be useful in the production of phenyllactate
synthesis
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a lactate dehydrogenase (Ldh) and phosphotransacetylase (Pta) deletion strain is evolved for 2,000 h, resulting in a stable strain with 40:1 ethanol selectivity and a 4.2-fold increase in ethanol yield over the wild-type strain. In a coculture of organic acid-deficient engineered strains of both Clostridium thermocellum and Thermoanaerobacterium saccharolyticum, fermentation of 92 g/liter Avicel results in 38 g/liter ethanol, with acetic and lactic acids below detection limits, in 146 h. engineering is based on a phosphoribosyl transferase (Hpt) deletion strain, which produces acetate, lactate, and ethanol in a ratio of 1.7:1.5:1.0, similar to the 2.1:1.9:1.0 ratio produced by the wild type. The Hpt/Ldh double mutant strain does not produce significant levels of lactate and has a 1.4:1.0 ratio of acetate to ethanol. Similarly, the Hpt/Pta double mutant strain does not produce acetate and has a 1.9:1.0 ratio of lactate to ethanol. The Hpt/Ldh/Pta triple mutant strain achieves ethanol selectivity of 40:1 relative to organic acids
synthesis
construction of a markerless strain lacking phosphotransacetylase Pta, acetate kinase Ack and lactate dehydrogenase Ldh genes. The gene deletion strain ferments 50 g/liter of cellobiose, with a yield of 0.44 g ethanol per g glucose equivalent substrate and a maximum volumetric productivity of 1.13 g ethanol per liter and h. A system for genetic marker removal allows for enactment of further modifications and creation of strains for industrial applications
synthesis
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metabolic engineering of Geobacillus thermoglucosidasius to divert the fermentative carbon flux from a mixed acid pathway, to one in which ethanol becomes the major product, involving elimination of the lactate dehydrogenase and pyruvate formate lyase pathways by disruption of the ldh and pflB genes, respectively, and upregulation of expression of pyruvate dehydrogenase. Strains with all three modifications form ethanol efficiently and rapidly at temperatures in excess of 60°C in yields in excess of 90% of theoretical. The strains also efficiently ferment cellobiose and a mixed hexose and pentose feed
synthesis
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Thermoanaerobacter mathranii can produce ethanol from lignocellulosic biomass at high temperatures. Deletion of the Ldh gene coding for lactate dehydrogenase eliminates an NADH oxidation pathway. To further facilitate NADH regeneration used for ethanol formation, a heterologous gene GldA encoding an NAD+-dependent glycerol dehydrogenase is expressed leading to increased ethanol yield in the presence of glycerol using xylose as a substrate. The metabolism of the cells is shifted toward the production of ethanol over acetate, hence restoring the redox balance. The recombinant enzyme acquired the capability to utilize glycerol as an extra carbon source in the presence of xylose resulting in a higher ethanol yield
synthesis
L-nLDH is an efficient catalyst that can be used in the enantioselective reduction of alpha-keto acids to alpha-hydroxy acids
synthesis
coexpression of enzyme and glucose dehydrogenase gene in Escherichia coli efficiently reduces 3,4-dihydroxyphenylpyruvate to L-3,4-dihydroxyphenyllactate with 95.45% isolation yield
synthesis
engineering of Kluyveromyces marxianus to express and coexpress various heterologous LDH enzymes for L-lactic acid production. LDH enzymes originating from Staphylococcus epidermidis (SeLDH, optimal at pH 5.6), Lactobacillus acidophilus (LaLDH, optimal at pH 5.3), and Bos taurus (BtLDH, optimal at pH 9.8) are functionally expressed individually and in combination. A strain co-expressing SeLDH and LaLDH produces 16.0 g/l L-lactic acid, whereas the strains expressing those enzymes individually produces only 8.4 and 6.8 g/l, respectively. This coexpressing strain produces 24.0 g/l L-lactic acid with a yield of 0.48 g/g glucose in the presence of CaCO3
synthesis
engineering of Kluyveromyces marxianus to express and coexpress various heterologous LDH enzymes for L-lactic acid production. LDH enzymes originating from Staphylococcus epidermidis (SeLDH, optimal at pH 5.6), Lactobacillus acidophilus (LaLDH, optimal at pH 5.3), and Bos taurus (BtLDH, optimal at pH 9.8) are functionally expressed individually and in combination. A strain coexpressing SeLDH and LaLDH produces 16.0 g/l L-lactic acid, whereas the strains expressing those enzymes individually produces only 8.4 and 6.8 g/l, respectively. This coexpressing strain produces 24.0 g/l L-lactic acid with a yield of 0.48 g/g glucose in the presence of CaCO3
synthesis
production of phenyllactic acid from L-Phe by recombinant Escherichia coli coexpressing L-phenylalanine oxidase and L-lactate dehydrogenase. At optimal conditions (L-Phe 6 g/l, pH 7.5, 35°C, CDW 24.5 g/l and 200 rpm), the recombinant strain produces 1.62 g L-phenylalanine/l with a conversion of 28% from L-Phe
synthesis
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a lactate dehydrogenase (Ldh) and phosphotransacetylase (Pta) deletion strain is evolved for 2,000 h, resulting in a stable strain with 40:1 ethanol selectivity and a 4.2-fold increase in ethanol yield over the wild-type strain. In a coculture of organic acid-deficient engineered strains of both Clostridium thermocellum and Thermoanaerobacterium saccharolyticum, fermentation of 92 g/liter Avicel results in 38 g/liter ethanol, with acetic and lactic acids below detection limits, in 146 h. engineering is based on a phosphoribosyl transferase (Hpt) deletion strain, which produces acetate, lactate, and ethanol in a ratio of 1.7:1.5:1.0, similar to the 2.1:1.9:1.0 ratio produced by the wild type. The Hpt/Ldh double mutant strain does not produce significant levels of lactate and has a 1.4:1.0 ratio of acetate to ethanol. Similarly, the Hpt/Pta double mutant strain does not produce acetate and has a 1.9:1.0 ratio of lactate to ethanol. The Hpt/Ldh/Pta triple mutant strain achieves ethanol selectivity of 40:1 relative to organic acids
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synthesis
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production of phenyllactic acid from L-Phe by recombinant Escherichia coli coexpressing L-phenylalanine oxidase and L-lactate dehydrogenase. At optimal conditions (L-Phe 6 g/l, pH 7.5, 35°C, CDW 24.5 g/l and 200 rpm), the recombinant strain produces 1.62 g L-phenylalanine/l with a conversion of 28% from L-Phe
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synthesis
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metabolic engineering of Geobacillus thermoglucosidasius to divert the fermentative carbon flux from a mixed acid pathway, to one in which ethanol becomes the major product, involving elimination of the lactate dehydrogenase and pyruvate formate lyase pathways by disruption of the ldh and pflB genes, respectively, and upregulation of expression of pyruvate dehydrogenase. Strains with all three modifications form ethanol efficiently and rapidly at temperatures in excess of 60°C in yields in excess of 90% of theoretical. The strains also efficiently ferment cellobiose and a mixed hexose and pentose feed
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synthesis
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L-nLDH is an efficient catalyst that can be used in the enantioselective reduction of alpha-keto acids to alpha-hydroxy acids
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synthesis
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the enzyme might be useful in the production of phenyllactate
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synthesis
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engineering of Kluyveromyces marxianus to express and coexpress various heterologous LDH enzymes for L-lactic acid production. LDH enzymes originating from Staphylococcus epidermidis (SeLDH, optimal at pH 5.6), Lactobacillus acidophilus (LaLDH, optimal at pH 5.3), and Bos taurus (BtLDH, optimal at pH 9.8) are functionally expressed individually and in combination. A strain co-expressing SeLDH and LaLDH produces 16.0 g/l L-lactic acid, whereas the strains expressing those enzymes individually produces only 8.4 and 6.8 g/l, respectively. This coexpressing strain produces 24.0 g/l L-lactic acid with a yield of 0.48 g/g glucose in the presence of CaCO3
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synthesis
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engineering of Kluyveromyces marxianus to express and coexpress various heterologous LDH enzymes for L-lactic acid production. LDH enzymes originating from Staphylococcus epidermidis (SeLDH, optimal at pH 5.6), Lactobacillus acidophilus (LaLDH, optimal at pH 5.3), and Bos taurus (BtLDH, optimal at pH 9.8) are functionally expressed individually and in combination. A strain coexpressing SeLDH and LaLDH produces 16.0 g/l L-lactic acid, whereas the strains expressing those enzymes individually produces only 8.4 and 6.8 g/l, respectively. This coexpressing strain produces 24.0 g/l L-lactic acid with a yield of 0.48 g/g glucose in the presence of CaCO3
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synthesis
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Thermoanaerobacter mathranii can produce ethanol from lignocellulosic biomass at high temperatures. Deletion of the Ldh gene coding for lactate dehydrogenase eliminates an NADH oxidation pathway. To further facilitate NADH regeneration used for ethanol formation, a heterologous gene GldA encoding an NAD+-dependent glycerol dehydrogenase is expressed leading to increased ethanol yield in the presence of glycerol using xylose as a substrate. The metabolism of the cells is shifted toward the production of ethanol over acetate, hence restoring the redox balance. The recombinant enzyme acquired the capability to utilize glycerol as an extra carbon source in the presence of xylose resulting in a higher ethanol yield
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