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https://www.readbyqxmd.com/read/28735489/a-zebrafish-model-for-evaluating-the-function-of-human-leukemic-gene-idh1-and-its-mutation
#1
Alvin C H Ma, Xiangguo Shi, Bai-Liang He, Yuhan Guo, Anskar Y H Leung
The recent advent of next-generation sequencing (NGS) has greatly accelerated identification of gene mutations in myeloid malignancies at unprecedented speed that will soon outpace their functional validation by conventional laboratory techniques and animal models. A high-throughput whole-organism model is useful for the functional validation of new mutations. We recently reported the use of zebrafish to evaluate the hematopoietic function of isocitrate dehydrogenase 1 (IDH1) and the effects of expressing human IDH1-R132H that is frequently identified in human acute myeloid leukemia (AML), in myelopoiesis, with a view to develop zebrafish as a model of AML...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28735321/betaine-improves-polymer-grade-d-lactic-acid-production-by-sporolactobacillus-inulinus-using-ammonia-as-green-neutralizer
#2
Guoping Lv, Chengchuan Che, Li Li, Shujing Xu, Wanyi Guan, Baohua Zhao, Jiansong Ju
The traditional CaCO3-based fermentation process generates huge amount of insoluble CaSO4 waste. To solve this problem, we have developed an efficient and green D-lactic acid fermentation process by using ammonia as neutralizer. The 106.7 g/L of D-lactic acid production and 0.89 g per g of consumed sugar were obtained by Sporolactobacillus inulinus CASD with a high optical purity of 99.7% by adding 100 mg/L betaine in the simple batch fermentation process. The addition of betaine was experimentally proven to protect cell at high concentration of ammonium ion, increase the D-lactate dehydrogenase specific activity and thus promote the production of D-lactic acid...
July 6, 2017: Polish Journal of Microbiology
https://www.readbyqxmd.com/read/28735307/influence-of-pseudomonas-and-bacillus-strains-isolated-from-lolium-perenne-rhizospheric-soil-in-vojvodina-serbia-on-planth-growth-and-soil-microbial-communities
#3
Stamenov R Dragana, Simonida Đurić, Timea I Hajnal Jafari, Snezana Anđelković
The aim of this study was the isolation of Pseudomonas sp. and Bacillus sp. strains from rhizospheric soil and monitoring the impact of two isolates denoted as P12 (Pseudomonas sp.) and B1 (Bacillus sp.) on the parameters of English ryegrass (Lolium perenne) yield and activity of the soil microbial communities. During 2012-2014, a plot experiment was set up following the randomized block system. Better effect on the plant growth was recorded with the use of Pseudomonas sp. P12 isolate than with Bacillus sp...
July 6, 2017: Polish Journal of Microbiology
https://www.readbyqxmd.com/read/28735224/simultaneous-quantification-of-cortisol-and-cortisone-in-urines-from-infants-with-packed-fiber-solid-phase-extraction-coupled-to-hplc-ms-ms
#4
Chen Li, Zhao Zhang, Xiongwei Liu, Kangwei Shen, Pan Gu, Xuejun Kang
Cortisol and cortisone are two important glucocorticoids in human body, their interconversion is controlled by two isotypes of 11β-hydroxy steroid dehydrogenase (11β-HSD1 and 11β-HSD2). The ratio of urinary cortisol to cortisone can be used to assess the activity of 11β-HSDs. An analytical method to quantify urinary cortisol and cortisone using high performance liquid chromatographic tandem mass spectrometry following a packed-fiber solid-phase extraction (PFSPE) was developed. The proposed method was validated and applied to determine the urinary cortisol and cortisone concentrations in infants...
July 12, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28735060/individual-roles-of-brain-and-serum-alcohol-dehydrogenase-isoforms-in-regulation-of-alcohol-consumption-in-spf-wistar-rats
#5
Vsevolod V Pavshintsev, Nikita A Mitkin, Olga Y Frolova, Ekaterina A Kushnir, Olga A Averina, Maxim L Lovat
Alcohol dehydrogenases (ADH) are key enzymes of ethanol metabolism that mediate its oxidation to acetaldehyde. ADHs are also able to oxidize some types of neurotransmitters such as dopamine, serotonin and norepinephrine. Increased level of ADHs activity, induced by chronic alcohol consumption, is presumably associated with disturbed neurotransmitters metabolism that leads to stable alcohol craving. As earlier reported, intraperitoneal administration of 4-methilpirasole (non-specific inhibitor of ADHs) has shown to provide a short-term anti-alcoholic effect, but individual roles of ADH isoforms in this process were still unclear...
July 19, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28734797/the-effects-pf-continuously-acoustical-stress-on-cortisol-in-milkfish-chanos-chanos
#6
Chih An Wei, Tzu Hao Lin, Ruo Dong Chen, Yung-Che Tseng, Yi Ta Shao
Strong underwater acoustic noise has been known that may cause hearing loss and actual stress in teleost. However, the long-term physiological effects of relatively quiet but continuously noise on fish were less understood. In present study, milkfish, Chanos chanos, were exposed to the simulated-wind farm noise either quiet (109 dB re 1 μPa / 125.4 Hz; approx. 10-100m distant from the wind farm) or noisy (138 dB re 1 μPa / 125.4 Hz; nearby the wind farm) conditions for 24 hr, 3 days and 1 week. Comparing to the control group (80 dB re 1 μPa / 125...
July 19, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28734739/serum-levels-of-squamous-cell-carcinoma-antigens-1-and-2-reflect-disease-severity-and-clinical-type-of-atopic-dermatitis-in-adult-patients
#7
Tomoko Okawa, Yukie Yamaguchi, Kenzen Kou, Junya Ono, Yoshinori Azuma, Noriko Komitsu, Yusuke Inoue, Masumi Kohno, Setsuko Matsukura, Takeshi Kambara, Shoichiro Ohta, Kenji Izuhara, Michiko Aihara
BACKGROUND: Recent studies have indicated that serum levels of squamous cell carcinoma antigen (SCCA) 1 and 2 induced by type 2 cytokines such as IL-4 and IL-13, are increased in patients with atopic dermatitis (AD). However, no clinical studies have analyzed serum levels of SCCA2 in larger series of AD patients or their association with various clinical characteristics. This study was performed to clarify whether serum levels of SCCA2 are associated with disease severity and clinical phenotypes of adult AD patients...
July 19, 2017: Allergology International: Official Journal of the Japanese Society of Allergology
https://www.readbyqxmd.com/read/28734721/factors-influencing-survival-of-patients-with-pancreatic-adenocarcinoma-and-synchronous-liver-metastases-receiving-palliative-care
#8
Huaqiang Ouyang, Weidong Ma, Fang Liu, Zhensong Yue, Minghui Fang, Manman Quan, Zhanyu Pan
BACKGROUND AND AIMS: Patients with pancreatic ductal adenocarcinoma and synchronous liver metastases (PACLM) have an extremely limited life expectancy. We performed a single-center analysis to explore the clinical results and prognostic factors of patients with PACLM receiving palliative care. METHODS: We retrospectively reviewed 189 patients undergoing palliative care at Tianjin Medical University Cancer Hospital over a 15-year period. Clinical characteristics, survival condition, and factors associated with survival were analyzed...
July 8, 2017: Pancreatology: Official Journal of the International Association of Pancreatology (IAP) ... [et Al.]
https://www.readbyqxmd.com/read/28734179/computational-analysis-for-the-determination-of-deleterious-nssnps-in-human-mthfd1-gene
#9
Mansi Desai, J B Chauhan
Single nucleotide polymorphisms (SNPs) are the most common genetic polymorphisms and play a major role in many inherited diseases. Methylenetetrahydrofolate dehydrogenase 1 (MTHFD1) is one of the enzymes involved in folate metabolism. In the present study, the functional and structural consequences of nsSNPs of human MTHFD1 gene was analyzed using various computational tools like SIFT, PolyPhen2, PANTHER, PROVEAN, SNAP2, nsSNPAnalyzer, PhD-SNP, SNPs&GO, I-Mutant, MuPro, ConSurf, InterPro, NCBI Conserved Domain Search tool, ModPred, SPARKS-X, RAMPAGE, FT Site and PyMol...
July 11, 2017: Computational Biology and Chemistry
https://www.readbyqxmd.com/read/28733652/deficient-glutamate-biosynthesis-triggers-a-concerted-upregulation-of-ribosomal-protein-genes-in-arabidopsis
#10
Tamara Muñoz-Nortes, José Manuel Pérez-Pérez, Raquel Sarmiento-Mañús, Héctor Candela, José Luis Micol
Biomass production requires the coordination between growth and metabolism. In a large-scale screen for mutants affected in leaf morphology, we isolated the orbiculata1 (orb1) mutants, which exhibit a pale green phenotype and reduced growth. The combination of map-based cloning and next-generation sequencing allowed us to establish that ORB1 encodes the GLUTAMATE SYNTHASE 1 (GLU1) enzyme, also known as FERREDOXIN-DEPENDENT GLUTAMINE OXOGLUTARATE AMINOTRANSFERASE 1 (Fd-GOGAT1). We performed an RNA-seq analysis to identify global gene expression changes in the orb1-3 mutant...
July 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28733549/pretreatment-serum-lactate-level-as-a-prognostic-biomarker-in-patients-undergoing-supratentorial-primary-brain-tumor-resection
#11
Chung-Chih Shih, Tzong-Shiun Lee, Fon-Yih Tsuang, Pei-Lin Lin, Ya-Jung Cheng, Hsiao-Liang Cheng, Chun-Yu Wu
INTRODUCTION: Malignant primary brain tumors are one of the most aggressive cancers. Pretreatment serum nonneuronal biomarkers closely associated with postoperative outcomes are of high clinical relevance. The present study aimed to identify potential pretreatment serum biomarkers that may influence oncological outcomes in patients with primary brain tumors. METHODS: A total of 74 patients undergoing supratentorial primary brain tumor resection were enrolled. Before tumor resection, serum neuronal biomarkers, namely neuron-specific enolase (NSE), S100β, and glial fibrillary acidic protein (GFAP), and serum nonneuronal biomarkers, namely neutrophil gelatinase-associated lipocalin (NGAL), lactate dehydrogenase (LDH), and lactate, were measured and associated postoperative oncological outcomes, including brain tumor grading, progression-free survival (PFS), and overall survival (OS), were compared...
June 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28733286/the-regulator-ldhr-and-the-d-lactate-dehydrogenase-ldha-of-burkholderia-multivorans-play-a-role-in-carbon-overflow-and-in-planktonic-cellular-aggregates-formation
#12
Inês N Silva, Marcelo J Ramires, Lisa A Azevedo, Ana R Guerreiro, Andreia C Tavares, Jörg D Becker, Leonilde M Moreira
LysR-type transcriptional regulators (LTTR) are the most commonly found regulators in Burkholderia cepacia complex, comprising opportunistic pathogens causing chronic respiratory infections in cystic fibrosis (CF) patients. Despite LTTRs being global regulators of pathogenicity in several bacteria, few have been characterized in Burkholderia Here, we showed that gene ldhR of B. multivorans encoding a LTTR is co-transcribed with ldhA encoding a d-lactate dehydrogenase, and evaluate their implication in virulence traits like exopolysaccharide (EPS) synthesis and biofilm formation...
July 21, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28733231/tussilagonone-induced-nrf2-pathway-activation-protects-hepg2-cells-from-oxidative-injury
#13
Kyung-Mi Lee, Tae Yeon Kwon, Unwoo Kang, Eun Kyoung Seo, Ji Ho Yun, Chu Won Nho, Yeong Shik Kim
Tussilagonone is a compound derived from the medicinal plant Tussilago farfara L., which is used as a traditional medicine for respiratory diseases, including asthma and pneumonia. Recent reports suggest that tussilagonone exhibits anti-inflammatory effects; however, the scope of protective functions has not been elucidated yet. In this study, we demonstrate that tussilagonone enhances cellular detoxification by increasing quinone reductase activity in Hepa1c1c7 cells. In addition, tussilagonone decreased tert-butyl hydroperoxide(t-BHP)-induced ROS production and cell death, suggesting that it also acts as a potent antioxidant...
July 18, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28733186/easix-in-patients-with-acute-graft-versus-host-disease-a-retrospective-cohort-analysis
#14
Thomas Luft, Axel Benner, Sonata Jodele, Christopher E Dandoy, Rainer Storb, Ted Gooley, Brenda M Sandmaier, Natalia Becker, Aleksandar Radujkovic, Peter Dreger, Olaf Penack
BACKGROUND: Endothelial dysfunction links thrombotic microangiopathy to steroid-refractory graft-versus-host disease (GVHD) after allogeneic stem-cell transplantation. We aimed to assess if the simple formula-lactate dehydrogenase (U/L) × creatinine (mg/dL)/thrombocytes (10(9) cells per L)-termed the Endothelial Activation and Stress Index (EASIX), might be valuable for the prediction of death in patients with acute GVHD after allogeneic stem-cell transplantation. METHODS: For this retrospective analysis, we analysed a training cohort (in Germany) and three validation cohorts (in Germany and the USA) of patients with acute GVHD who had received consecutive allogeneic stem-cell transplantation...
July 18, 2017: Lancet Haematology
https://www.readbyqxmd.com/read/28733137/can-metabolic-tumour-parameters-on-primary-staging-18-f-fdg-pet-ct-contribute-to-risk-stratification-of-primary-central-nervous-system-lymphomas-for-patient-management-as-a-prognostic-model
#15
K Okuyucu, E Alagoz, S Ince, S Ozaydin, N Arslan
OBJECTIVE: Primary central nervous system (CNS) lymphoma is an aggressive and fatal extranodal non-Hodgkin lymphoma (NHL) jailed in CNS at initial diagnosis. Its prognosis is poor and the disease has a fatal outcome when compared with systemic NHL. A few baseline risk stratification scoring systems have been suggested to estimate the prognosis mainly based on serum lactate dehydrogenase (LDH) level, age, Karnofsky performance score (KPS), involvement of deep brain structures (DBS) and cerebrospinal fluid protein concentration...
July 18, 2017: Revista Española de Medicina Nuclear e Imagen Molecular
https://www.readbyqxmd.com/read/28732376/risk-factors-associated-with-fatality-of-severe-fever-with-thrombocytopenia-syndrome-a-meta-analysis
#16
Yuxin Chen, Bei Jia, Yong Liu, Rui Huang, Junhao Chen, Chao Wu
Severe fever with thrombocytopenia syndrome is an emerging life-threatening infectious disease identified in 2009. Given high case-fatality rate among patients with severe fever with thrombocytopenia syndrome, identification of the risk factors at acute phase associated with fatality is crucial for treatment. Therefore, we aimed to meta-analytically evaluate risk factors of fatal clinical outcome of severe fever with thrombocytopenia syndrome. 238 fatal cases and 873 non-fatal cases from 12 studies were included in this meta-analysis...
July 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28732355/checkpoint-kinase-1-inhibition-sensitises-transformed-cells-to-dihydroorotate-dehydrogenase-inhibition
#17
Stéphanie Arnould, Geneviève Rodier, Gisèle Matar, Charles Vincent, Nelly Pirot, Yoann Delorme, Charlène Berthet, Yoan Buscail, Jean Yohan Noël, Simon Lachambre, Marta Jarlier, Florence Bernex, Hélène Delpech, Pierre Olivier Vidalain, Yves L Janin, Charles Theillet, Claude Sardet
Reduction in nucleotide pools through the inhibition of mitochondrial enzyme dihydroorotate dehydrogenase (DHODH) has been demonstrated to effectively reduce cancer cell proliferation and tumour growth. The current study sought to investigate whether this antiproliferative effect could be enhanced by combining Chk1 kinase inhibition. The pharmacological activity of DHODH inhibitor teriflunomide was more selective towards transformed mouse embryonic fibroblasts than their primary or immortalised counterparts, and this effect was amplified when cells were subsequently exposed to PF477736 Chk1 inhibitor...
July 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/28731573/effect-of-alcohol-dehydrogenase-1b-and-7-polymorphisms-on-blood-ethanol-and-acetaldehyde-concentrations-in-healthy-subjects-with-a-history-of-moderate-alcohol-consumption
#18
Roberta Pastorino, Luigi Iuliano, Alessia Vecchioni, Dario Arzani, Mirta Milic, Francesca Annunziata, Chiara Zerbinati, Ettore Capoluongo, Stefano Bonassi, James D McKay, Stefania Boccia
AIMS: To evaluate the effect of ADH1B and ADH7 genotypes on blood acetaldehyde and ethanol levels after alcohol ingestion, and to measure the genotoxic effect of smoking and ethanol on the buccal cells, also controlling for ADH variants. METHODS: We recruited healthy Italian subjects with at least a moderate history of alcohol consumption. All subjects were given an alcoholic drink of 0.4 g ethanol /kg of body weight. Blood venous samples were collected at baseline, and 30, 60, 90 and 120 minutes after ingestion...
July 21, 2017: Drug Testing and Analysis
https://www.readbyqxmd.com/read/28731533/improvement-of-d-lactic-acid-production-in-saccharomyces-cerevisiae-under-acidic-conditions-by-evolutionary-and-rational-metabolic-engineering
#19
Seung-Ho Baek, Eunice Y Kwon, Sang-Jeong Bae, Bo-Ram Cho, Seon-Young Kim, Ji-Sook Hahn
Microbial lactic acid (LA) production under acidic fermentation conditions is favorable to reduce the production cost, but circumventing LA toxicity is a major challenge. We generated D-LA-producing Saccharomyces cerevisiae strain JHY5610 by expressing D-lactate dehydrogenase gene (Lm. ldhA) from Leuconostoc mesenteroides, while deleting genes involved in ethanol production (ADH1, ADH2, ADH3, ADH4, and ADH5), glycerol production (GPD1 and GPD2), and degradation of D-LA (DLD1). Adaptive laboratory evolution of JHY5610 led to a strain JHY5710 having higher LA tolerance and D-LA-production capability...
July 21, 2017: Biotechnology Journal
https://www.readbyqxmd.com/read/28731532/formate-and-nitrate-utilization-in-enterobacter-aerogenes-for-semi-anaerobic-production-of-isobutanol
#20
Hwi-Min Jung, Yong Hwan Kim, Min-Kyu Oh
Anaerobic bioprocessing is preferred because of its economic advantages. However, low productivity and decreased growth of the host strain have limited the use of the anaerobic process. Anaerobic respiration can be applied to anoxic processing using formate and nitrate metabolism to improve the productivity of value-added metabolites. We constructed isobutanol-producing strains using Enterobacter aerogenes as a host strain by metabolic engineering approaches. The byproduct pathway (ldhA, budA, and pflB) was knocked out, and heterologous keto-acid decarboxylase (kivD) and alcohol dehydrogenase (adhA) were expressed along with the L-valine synthesis pathway (ilvCD and budB)...
July 21, 2017: Biotechnology Journal
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