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https://www.readbyqxmd.com/read/28439920/understanding-human-thiol-dioxygenase-enzymes-structure-to-function-and-biology-to-pathology
#1
REVIEW
Bibekananda Sarkar, Mahesh Kulharia, Anil K Mantha
Amino acid metabolism is a significant metabolic activity in humans, especially of sulphur-containing amino acids, methionine and cysteine (Cys). Cys is cytotoxic and neurotoxic in nature; hence, mammalian cells maintain a constant intracellular level of Cys. Metabolism of Cys is mainly regulated by two thiol dioxygenases: cysteine dioxygenase (CDO) and 2-aminoethanethiol dioxygenase (ADO). CDO and ADO are the only human thiol dioxygenases reported with a role in Cys metabolism and localized to mitochondria...
April 24, 2017: International Journal of Experimental Pathology
https://www.readbyqxmd.com/read/28438660/reaction-of-hypotaurine-or-taurine-with-superoxide-produces-the-organic-peroxysulfonic-acid-peroxytaurine
#2
Roxanna Q Grove, Steven J Karpowicz
Hypotaurine and taurine are amino acid derivatives and abundant molecules in many eukaryotes. The biological reaction in which hypotaurine is converted to taurine remains poorly understood. Here, hypotaurine and taurine were observed to react with superoxide anion in vitro to form the novel molecule peroxytaurine. In contrast, hypotaurine reacts with hydrogen peroxide to form taurine, but taurine does not react with hydrogen peroxide in vitro. Mass and NMR spectrometry as well as FTIR and Raman spectroscopy support the molecular characterization of peroxytaurine...
April 21, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28430815/soy-and-fish-as-features-of-the-japanese-diet-and-cardiovascular-disease-risks
#3
Yukio Yamori, Miki Sagara, Yoshimi Arai, Hitomi Kobayashi, Kazumi Kishimoto, Ikuko Matsuno, Hideki Mori, Mari Mori
In the World Health Organization (WHO)-coordinated Cardiovascular Disease and Alimentary Comparison Study, isoflavones (I; biomarker for dietary soy) and taurine (T; biomarker for dietary fish) in 24-hour-urine (24U) were inversely related to coronary heart disease (CHD) mortality. High levels of these biomarkers are found in Japanese people, whose CHD mortality is lowest among developed countries. We analyzed the association of these biomarkers with cardiovascular disease risk in the Japanese to know their health effects within one ethnic population...
2017: PloS One
https://www.readbyqxmd.com/read/28426073/ameliorative-effects-of-pepsin-digested-chicken-liver-hydrolysates-on-development-of-alcoholic-fatty-livers-in-mice
#4
Yi-Ling Lin, Szu-Yun Tai, Jr-Wei Chen, Chung-Hsi Chou, Shih-Guei Fu, Yi-Chen Chen
With developments in economics and increasing work loads, alcohol abuse becomes more and more severe, leading to occurrences of alcoholic liver disease (ALD). Pepsin-digested chicken liver hydrolysates (CLHs) contain high amounts of glutamic acid, leucine, lysine, and alanine while the contents of taurine, anserine, and carnosine are also elevated after pepsin hydrolyzation. The objectives of this study were to evaluate the protective effects of CLHs against chronic alcohol consumption. The results indicated that the enlarged (p < 0...
April 20, 2017: Food & Function
https://www.readbyqxmd.com/read/28412885/antenatal-taurine-supplementation-in-fetal-rats-with-growth-restriction-improves-neural-stem-cell-proliferation-by-inhibiting-the-activities-of-rho-family-factors
#5
Yan Wang, Xiang-Wen Li, Jing Liu, Wei Fu
OBJECTIVE: To investigate whether antenatal taurine supplementation improves neural stem cell proliferation in rats with fetal growth restriction (FGR) through regulating the activity of Rho family factors. METHODS: FGR models were established via food restriction throughout pregnancy. Pregnant rats were randomly divided into the control group, the FGR group (given 40% of the normal daily feeding in the control group), and the Taurine group (FGR model treated with 300 mg/kg·d taurine from gestational day seven)...
April 16, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28411362/knockdown-of-long-noncoding-rna-tug1-inhibits-the-proliferation-and-cellular-invasion-of-osteosarcoma-cells-by-sponging-mir-153
#6
Heping Wang, Yanzhang Yu, Shuxin Fan, Leifeng Luo
Long noncoding RNA (lncRNA) Taurine-upregulated gene 1 (TUG1) has been confirmed to be involved in the progression of various cancers, however, its mechanism of action in osteosarcoma has not been well addressed. In our study, TUG1 was overexpressed and miR-153 was downregulated in osteosarcoma tissues and cell lines. Loss-of-function assay showed that TUG1 knockdown suppressed the viability, colony formation, and invasion of osteosarcoma cells in vitro. Moreover, TUG1 was confirmed to be a miR-153 sponge. Ectopic expression of TUG1 reversed the inhibitory effect of miR-153 on the proliferation and invasion of osteosarcoma cells...
April 12, 2017: Oncology Research
https://www.readbyqxmd.com/read/28411106/mass-spectrometry-imaging-shows-major-derangements-in-neurogranin-and-in-purine-metabolism-in-the-triple-knockout-3%C3%A3-tg-alzheimer-mouse-model
#7
Clara Esteve, Emrys A Jones, Douglas B Kell, Hervé Boutin, Liam A McDonnell
Matrix-assisted laser desorption/ionization (MALDI) mass spectrometry imaging (MSI) can simultaneously measure hundreds of biomolecules directly from tissue. Using different sample preparation strategies, proteins and metabolites have been profiled to study the molecular changes in a 3×Tg mouse model of Alzheimer's disease. In comparison with wild-type (WT) control mice MALDI-MSI revealed Alzheimer's disease-specific protein profiles, highlighting dramatic reductions of a protein with m/z 7560, which was assigned to neurogranin and validated by immunohistochemistry...
April 11, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28404901/long-non-coding-rna-tug1-promotes-endometrial-cancer-development-via-inhibiting-mir-299-and-mir-34a-5p-liu
#8
Lifen Liu, Xin Chen, Ying Zhang, Yanrong Hu, Xiaoqing Shen, Weipei Zhu
It is generally known that the human genome makes a large amount of noncoding RNAs compared with coding genes. Long non-coding RNAs (lncRNAs) which composed of more than 200 nucleotides have been described as the largest subclass of the non-coding transcriptome in human noncoding RNAs. Existing research shows that lncRNAs exerted biological functions in various tumors via participating in both oncogenic and tumor suppressing pathways. The previous studies indicated that lncRNA taurine upregulated 1 (TUG1) play important roles in the initiation and progression of malignancies...
February 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28397071/taurine-promotes-the-cartilaginous-differentiation-of-human-umbilical-cord-derived-mesenchymal-stem-cells-in-vitro
#9
Xiuhua Yao, Huiling Huang, Zhou Li, Xiaohua Liu, Weijia Fan, Xinping Wang, Xuelian Sun, Jianmin Zhu, Hongrui Zhou, Huaying Wei
Taurine has been reported to influence osteogenic differentiation, but the role of taurine on cartilaginous differentiation using human umbilical cord-derived mesenchymal stem cells (hUC-MSCs) remains unclear. In this study, we investigated the effect of taurine (0, 1, 5 and 10 mM) on the proliferation and chondrogenesis of hUC-MSCs by analyzing cell proliferation, accumulation of glycosaminoglycans and expression of cartilage specific mRNA. The results show though taurine did not affected the proliferation of hUC-MSCs, 5 mM of taurine is sufficient to enhanced the accumulation of glycosaminoglycans and up-regulate cartilage specific mRNA expression, namely collagen type II, aggrecan and SOX9...
April 10, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28393748/gut-microbiota-of-mice-putatively-modifies-amino-acid-metabolism-in-the-host-brain
#10
Takahiro Kawase, Mao Nagasawa, Hiromi Ikeda, Shinobu Yasuo, Yasuhiro Koga, Mitsuhiro Furuse
Recently, it has been found that the gut microbiota influences functions of the host brain by affecting monoamine metabolism. The present study focused on the relationship between the gut microbiota and the brain amino acids. Specific pathogen-free (SPF) and germ-free (GF) mice were used as experimental models. Plasma and brain regions were sampled from mice at 7 and 16 weeks of age, and analysed for free d- and l-amino acids, which are believed to affect many physiological functions. At 7 weeks of age, plasma concentrations of d-aspartic acid (d-Asp), l-alanine (l-Ala), l-glutamine (l-Gln) and taurine were higher in SPF mice than in GF mice, but no differences were found at 16 weeks of age...
April 10, 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28393236/metabolomic-analysis-of-the-saliva-of-japanese-patients-with-oral-squamous-cell-carcinoma
#11
Mitsuyoshi Ohshima, Keisuke Sugahara, Kiyohiro Kasahara, Akira Katakura
The aim of the present study was to characterize the metabolic systems in Japanese patients with oral squamous cell carcinoma (OSCC) using capillary electrophoresis-mass spectrometry (CE-MS) metabolome analysis of saliva samples. A previous study showed variations among ethnicities and tumor sites in the saliva metabolome of patients with OSCC using CE-MS. In the present study, saliva was obtained from 22 Japanese patients with OSCC and from 21 healthy controls who visited the Department of Dentistry, Oral and Maxillofacial Surgery, Tokyo Dental Collage Ichikawa General Hospital, Tokyo, Japan, and all samples were subject to comprehensive quantitative metabolome analysis using CE-MS...
April 6, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28393186/a-novel-5-fluorouracil-resistant-human-esophageal-squamous-cell-carcinoma-cell-line-eca-109-5-fu-with-significant-drug-resistance-related-characteristics
#12
Chi Zhang, Qunfeng Ma, Yinan Shi, Xue Li, Ming Wang, Junfeng Wang, Jianlin Ge, Zhinan Chen, Ziling Wang, Hong Jiang
5-Fluorouracil (5-FU) is used for the clinical treatment of esophageal squamous cell carcinomas (ESCCs), yet it also induces chemoresistant cancer cells during treatment, which leads to the failure of the therapy. To further explore the resistance mechanism of 5-FU in ESCC, we established the 5-FU-resistant ESCC cell line Eca-109/5-FU, which was prepared by the stepwise exposure to increasing 5-FU concentrations. MTT assay and nude mouse xenograft models were used to test the drug resistance and proliferation of Eca-109 and Eca-109/5-FU cells in vitro and in vivo...
March 31, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28388120/a-terahertz-study-of-taurine-dispersion-correction-and-mode-couplings
#13
Zelin Dai, Xiangdong Xu, Yu Gu, Xinrong Li, Fu Wang, Yuxiang Lian, Kai Fan, Xiaomeng Cheng, Zhegeng Chen, Minghui Sun, Yadong Jiang, Chun Yang, Jimmy Xu
The low-frequency characteristics of polycrystalline taurine were studied experimentally by terahertz (THz) absorption spectroscopy and theoretically by ab initio density-functional simulations. Full optimizations with semi-empirical dispersion correction were performed in spectral computations and vibrational mode assignments. For comparison, partial optimizations with pure density functional theory were conducted in parallel. Results indicate that adding long-range dispersion correction to the standard DFT better reproduces the measured THz spectra than the popular partial optimizations...
March 28, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28386123/eastern-mediterranean-mobility-in-the-bronze-and-early-iron-ages-inferences-from-ancient-dna-of-pigs-and-cattle
#14
Meirav Meiri, Philipp W Stockhammer, Nimrod Marom, Guy Bar-Oz, Lidar Sapir-Hen, Peggy Morgenstern, Stella Macheridis, Baruch Rosen, Dorothée Huchon, Joseph Maran, Israel Finkelstein
The Late Bronze of the Eastern Mediterranean (1550-1150 BCE) was a period of strong commercial relations and great prosperity, which ended in collapse and migration of groups to the Levant. Here we aim at studying the translocation of cattle and pigs during this period. We sequenced the first ancient mitochondrial and Y chromosome DNA of cattle from Greece and Israel and compared the results with morphometric analysis of the metacarpal in cattle. We also increased previous ancient pig DNA datasets from Israel and extracted the first mitochondrial DNA for samples from Greece...
April 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28384716/analysis-of-mthfr-cbs-glutathione-taurine-and-hydrogen-sulfide-levels-in-retinas-of-hyperhomocysteinemic-mice
#15
Xuezhi Cui, Soumya Navneet, Jing Wang, Penny Roon, Wei Chen, Ming Xian, Sylvia B Smith
Purpose: Hyperhomocysteinemia (Hhcy) is implicated in certain retinal neurovascular diseases, although whether it is causative remains uncertain. In isolated ganglion cells (GCs), mild Hhcy induces profound death, whereas retinal phenotypes in Hhcy mice caused by mutations in remethylation (methylene tetrahydrofolatereductase [Mthfr+/-]) or transsulfuration pathways (cystathionine β-synthase [Cbs+/-]) demonstrate mild GC loss and mild vasculopathy. The current work investigated compensation in vivo of one pathway for the other, and, because the transsulfuration pathway yields cysteine necessary for formation of glutathione (GSH), taurine, and hydrogen sulfide (H2S), they were analyzed also...
April 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28383617/plasma-amino-acids-of-the-transsulfuration-pathway-and-plasma-lactate-in-septic-patients
#16
C Chiarla, I Giovannini, G Miggiano
OBJECTIVES: In sepsis increasing plasma lactate, even if unrelated to hypoperfusion and hypoxia, is a cause of concern. Among the patterns associated with increasing lactate, several plasma amino acid (AA) abnormalities, more in particular those of sulfur AAs, have remained unexplored, and their assessment has been the purpose of our study. MATERIALS AND METHODS: A systematic and detailed analysis of 183 simultaneous determinations of plasma AA-grams and lactate, from 12 trauma surgery patients who had developed sepsis, was performed...
March 2017: La Clinica Terapeutica
https://www.readbyqxmd.com/read/28383317/therapeutic-drug-monitoring-in-children-and-adolescents-under-pharmacotherapy-with-olanzapine-in-daily-clinical-practice
#17
Stefanie Fekete, Christoph Wewetzer, Claudia Mehler-Wex, Kristian Holtkamp, Rainer Burger, Susanne Reichert, Regina Taurines, Marcel Romanos, Manfred Gerlach, Karin Egberts
BACKGROUND: The relationship between daily dose, serum-concentration, and clinical outcomes of olanzapine as well as the influencing factors thereof in children and adolescents treated for different psychiatric disorders were investigated in daily clinical practice. Additionally, it was examined whether the current recommended therapeutic range (TR) for adult patients with psychotic disorders is also valid for minors. METHODS: The Competence-network for Therapeutic Drug Monitoring (www...
April 5, 2017: Therapeutic Drug Monitoring
https://www.readbyqxmd.com/read/28379688/effects-of-doxorubicin-cisplatin-and-tamoxifen-on-the-metabolic-profile-of-human-breast-cancer-mcf-7-cells-as-determined-by-1-h-high-resolution-magic-angle-spinning-nuclear-magnetic-resonance
#18
Roberta M Maria, Wanessa F Altei, Heloisa S Selistre-de-Araujo, Luiz A Colnago
Doxorubicin (Doxo), cisplatin (Cis), and tamoxifen (Tamo) are part of many chemotherapeutic regimens. However, there have been limited studies of the way metabolism in breast cancer is affected by chemotherapy. We studied, through (1)H high-resolution magic angle spinning nuclear magnetic resonance (HR-MAS NMR) spectroscopy, the metabolic profile of human breast cancer MCF-7 control (Con) cells as well as MCF-7 cells treated with Tamo, Cis, and Doxo. (1)H HR-MAS NMR single-pulse spectra evidenced signals from the cell compounds, including fatty acids (membranes), water-soluble proteins, and metabolites...
April 12, 2017: Biochemistry
https://www.readbyqxmd.com/read/28376901/down-regulation-of-lncrna-tug1-enhances-radiosensitivity-in-bladder-cancer-via-suppressing-hmgb1-expression
#19
Huijuan Jiang, Xigang Hu, Hongzhi Zhang, Wenbo Li
BACKGROUND: Long non-coding RNAs (lncRNAs) have been reported to regulate the sensitivity of different cancer cells to chemoradiotherapy. Aberrant expression of lncRNA Taurine-upregulated gene 1 (TUG1) has been found to be involved in the development of bladder cancer, however, its function and underlying mechanism in the radioresistance of bladder cancer remains unclear. METHODS: Quantitative real-time PCR (qRT-PCR) was conducted to measure the expression of TUG1 and HMGB1 mRNA in bladder cancer tissues and cell lines...
April 4, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28371309/comprehensive-metabonomic-analysis-of-heart-tissue-from-isoproterenol-induced-myocardial-infarction-rat-based-on-reversed-phase-and-hydrophilic-interaction-chromatography-coupled-to-mass-spectrometry
#20
Lei Sun, Jianxun Liu, Mingqian Sun, Li Lin, Lan Miao, Zhengyan Ge, Bin Yang
We aim to describe the metabonomic characteristics of myocardial infarction rats. High-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry was utilized to develop a metabonomic method of the heart homogenates of myocardial infarction rats. Hydrophilic interaction chromatography allows the analysis of high polar metabolites, providing complementary information to reversed-phase liquid chromatography. We combined reversed phase and hydrophilic interaction chromatographic separations to analyze 18 samples, ten from myocardial infarction rat hearts and eight from normal rat hearts...
March 29, 2017: Journal of Separation Science
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