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https://www.readbyqxmd.com/read/28728407/effects-of-cooking-method-and-final-core-temperature-on-cooking-loss-lipid-oxidation-nucleotide-related-compounds-and-aroma-volatiles-of-hanwoo-brisket
#1
Dicky Tri Utama, Ki Ho Baek, Hae Seong Jeong, Seok Ki Yoon, Seon-Tea Joo, Sung Ki Lee
Objective: This study was performed to observe the effects of cooking method and final core temperature on cooking loss, lipid oxidation, aroma volatiles, nucleotide-related compounds and aroma volatiles of Hanwoo brisket (deep pectoralis). Methods: Deep pectoralis muscles (8.65% of crude fat) were obtained from three Hanwoo steer carcasses with 1+ quality grade. Samples were either oven-roasted at 180°C (dry heat) or cooked in boiling water (moist heat) to final core temperature of 70°C (medium) or 77°C (well-done)...
July 6, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28728384/analysis-of-low-marbled-hanwoo-cow-meat-aged-with-different-dry-aging-methods
#2
Hyun Jung Lee, Ju-Hui Choe, Kwan Tae Kim, Jungmin Oh, Da Gyeom Lee, Ki Moon Kwon, Yang Il Choi, Cheorun Jo
Objective: Different dry-aging methods [traditional dry-aging (TD), simplified dry-aging (SD), and SD in an aging bag (SDB)] were compared to investigate the possible use of SD and/or SDB in practical situations. Methods: Sirloins from 48 Hanwoo cows were frozen (Control, 2 days postmortem) or dry-aged for 28 days using the different aging methods and then analyzed for chemical composition, total aerobic bacteria count, shear force, inosine 5'-monophosphate (IMP) and free amino acid content, and sensory properties...
June 26, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28728374/analysis-of-metabolomic-patterns-in-thoroughbreds-before-and-after-exercise
#3
Hyun-Jun Jang, Duk-Moon Kim, Kyu-Bong Kim, Jeong-Woong Park, Jae-Young Choi, Jin Hyeog Oh, Ki-Duk Song, Suhkmann Kim, Byung-Wook Cho
Objective: Evaluation of exercise effects in racehorse is important in horseracing industry and animal health care. In this study, we compared metabolic patterns between before and after exercise to screen metabolic biomarkers for exercise effects in thoroughbreds. Methods: The concentration of metabolites in muscle, plasma, and urine was measured by 1H NMR spectroscopy analysis and the relative metabolite levels in the three samples were compared between before and after exercise...
June 27, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28727843/atomistic-modeling-of-alternating-access-of-a-mitochondrial-adp-atp-membrane-transporter-with-molecular-simulations
#4
Koichi Tamura, Shigehiko Hayashi
The mitochondrial ADP/ATP carrier (AAC) is a membrane transporter that exchanges a cytosolic ADP for a matrix ATP. Atomic structures in an outward-facing (OF) form which binds an ADP from the intermembrane space have been solved by X-ray crystallography, and revealed their unique pseudo three-fold symmetry fold which is qualitatively different from pseudo two-fold symmetry of most transporters of which atomic structures have been solved. However, any atomic-level information on an inward-facing (IF) form, which binds an ATP from the matrix side and is fixed by binding of an inhibitor, bongkrekic acid (BA), is not available, and thus its alternating access mechanism for the transport process is unknown...
2017: PloS One
https://www.readbyqxmd.com/read/28726179/methionine-and-or-methionine-sulfoxide-alter-ectoenzymes-activities-in-lymphocytes-and-inflammatory-parameters-in-serum-from-young-rats-acute-and-chronic-effects
#5
Mayara Sandrielly Pereira Soares, Marcelo Zanusso Costa, Tatiane Morgana da Silva, Marta Gazal, Carlus Augustu Tavares do Couto, Gabriela Nogueira Debom, Rodrigo Rodrigues, Juliana Hofstätter Azambuja, Emerson André Casali, Cesar Eduardo Jacintho Moritz, Marta Frescura Duarte, Elizandra Braganhol, Francieli Moro Stefanello, Roselia Maria Spanevello
In this study we investigated the effect of acute and chronic treatment with Met and/or methionine sulfoxide (MetO) on ectonucleotidases and cholinesterases activities from lymphocytes and purine derivatives compounds, C-protein reactive, interleukin-10, interleukin-6, and tumor necrosis factor-α levels in serum of young rats. Adenosine triphosphate hydrolysis was decreased in lymphocytes 1 h after treatment by MetO and Met + MetO. However, adenosine triphosphate and adenosine diphosphate hydrolysis in lymphocytes was increased in the groups MetO and Met + MetO and adenosine deaminase activity was increased in MetO 3 h after the treatment...
July 19, 2017: Cell Biochemistry and Biophysics
https://www.readbyqxmd.com/read/28723780/the-relationship-between-itpa-rs1127354-polymorphisms-and-efficacy-of-antiviral-treatment-in-northeast-chinese-chc-patients
#6
Zhenhua Liu, Song Wang, Wenqian Qi, Xu Wang, Derong Sun, Hongguang Wang, Yonggui Zhang, Zhongxie Li, Liying Zhu, Ping Zhao, Honghua Guo, Changyu Zhou, Jiangbin Wang
This prospective study investigated the relationship between 2 inosine triphosphatase (ITPA) polymorphisms (rs7270101 and rs1127354) and the efficacy of ribavirin-based antiviral therapy in hepatitis C virus (HCV)-infected Chinese patients.A total of 906 patients diagnosed with chronic hepatitis C receiving pegylated interferon (PEG-IFN) plus ribavirin combination therapy between January 2011 and January 2014 from 5 hepatitis centers in Northeast China were enrolled. The patients were divided into genotype 1 and non-genotype 1 groups according to the genotype of infected HCV...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28722676/comparative-proteomic-analysis-of-virulent-and-avirulent-strains-of-toxoplasma-gondii-reveals-strain-specific-patterns
#7
Dong-Hui Zhou, Ze-Xiang Wang, Chun-Xue Zhou, Shuai He, Hany M Elsheikha, Xing-Quan Zhu
Research exploring the proteome of Toxoplasma gondii oocysts has gained momentum over the past few years. However, little is known about the oocyst's protein repertoires that contribute to differential virulence among T. gondii strains. Here, we used isobaric tag for relative and absolute quantitation-based proteomic analysis of oocysts of two T. gondii strains exhibiting the virulent PYS (ToxoDB#9) phenotype versus the less virulent PRU (Type II, ToxoDB#1) phenotype. Our aim was to determine protein expression patterns that contribute to the virulence of a particular phenotype...
July 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28717030/intestinal-epithelial-ecto-5-nucleotidase-cd73-regulates-intestinal-colonization-and-infection-by-nontyphoidal-salmonella
#8
Daniel J Kao, Bejan J Saeedi, David Kitzenberg, Krista M Burney, Evgenia Dobrinskikh, Kayla D Battista, Andrés Vázquez-Torres, Sean P Colgan, Douglas J Kominsky
Ecto-5' -nucleotidase (CD73) is expressed abundantly on the apical surface of intestinal epithelial cells (IEC) and functions as the terminal enzyme in the generation of extracellular adenosine. Previous work has demonstrated that adenosine signaling in IECs results in a number of tissue-protective effects during inflammation; however, a rationale for its apical expression has been lacking. We hypothesized that the highly polarized expression of CD73 is indicative of an important role for extracellular adenosine as a mediator of host-microbe interactions...
July 17, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28716914/metabolic-profiles-of-exercise-in-patients-with-mcardle-disease-or-mitochondrial-myopathy
#9
Nigel F Delaney, Rohit Sharma, Laura Tadvalkar, Clary B Clish, Ronald G Haller, Vamsi K Mootha
McArdle disease and mitochondrial myopathy impair muscle oxidative phosphorylation (OXPHOS) by distinct mechanisms: the former by restricting oxidative substrate availability caused by blocked glycogen breakdown, the latter because of intrinsic respiratory chain defects. We applied metabolic profiling to systematically interrogate these disorders at rest, when muscle symptoms are typically minimal, and with exercise, when symptoms of premature fatigue and potential muscle injury are unmasked. At rest, patients with mitochondrial disease exhibit elevated lactate and reduced uridine; in McArdle disease purine nucleotide metabolites, including xanthine, hypoxanthine, and inosine are elevated...
July 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28716651/significance-of-a-to-i-rna-editing-of-transcripts-modulating-pharmacokinetics-and-pharmacodynamics
#10
REVIEW
Masataka Nakano, Miki Nakajima
RNA editing is a post-transcriptional process that alters the nucleotide sequence of RNA transcripts to generate transcriptome diversity. Among the various types of RNA editing, adenosine-to-inosine (A-to-I) RNA editing is the most frequent type of RNA editing in mammals. Adenosine deaminases acting on RNA (ADAR) enzymes, ADAR1 and ADAR2, convert adenosines in double-stranded RNA structures into inosines by hydrolytic deamination. Inosine forms a base pair with cytidine as if it were guanosine; therefore, the conversion may affect the amino acid sequence, splicing, microRNA targeting, and miRNA maturation...
July 14, 2017: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28711496/metabolomic-profiling-reveals-potential-biomarkers-in-esophageal-cancer-progression-using-liquid-chromatography-mass-spectrometry-platform
#11
Haiping Zhang, Lei Wang, Zhichao Hou, Hong Ma, Batur Mamtimin, Ayshamgul Hasim, Ilyar Sheyhidin
Esophageal cancer (EC) is one of the most common malignancies with poor prognosis. Metabolomics has been shown to be a powerful approach to discover the potential biomarkers for cancer diagnosis and prognosis. The goal of this study is to screen potential biomarkers for early diagnosis and prognosis. In this study, 40 tissue samples and the corresponding control samples from the same esophageal squamous cell carcinoma (ESCC) patients were analyzed by liquid chromatography-mass spectrometry (LC-MS)-based metabolomics...
July 12, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28695520/use-of-inosine-monophosphate-dehydrogenase-activity-assay-to-determine-the-specificity-of-parp-1-inhibitors
#12
Sajitha Anthony, Jeffrey R Peterson, Yingbiao Ji
Inosine monophosphate dehydrogenase (IMPDH) is a rate-limiting enzyme involved in purine nucleotide biosynthesis. It is responsible for catalyzing the oxidation of inosine monophosphate (IMP) into xanthosine monophosphate (XMP). Concurrently, the cofactor NAD(+) is reduced to NADH. Poly(ADP-ribose) polymerase 1 (PARP-1) also utilizes NAD(+) as a substrate to synthesize poly(ADP-ribose). It has been demonstrated that inhibition of PARP-1 activity can be an effective cancer therapeutic. However, most PARP-1 inhibitors, including olaparib, were developed as NAD(+) analogs...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28695335/glutamatergic-system-and-mtor-signaling-pathway-participate-in-the-antidepressant-like-effect-of-inosine-in-the-tail-suspension-test
#13
Filipe Marques Gonçalves, Vivian Binder Neis, Débora Kurrle Rieger, Tanara V Peres, Mark William Lopes, Isabella A Heinrich, Ana Paula Costa, Ana Lúcia S Rodrigues, Manuella P Kaster, Rodrigo Bainy Leal
Glutamatergic system and mTOR signaling pathway have been proposed to be important targets for pharmacological treatment of major depressive disorder. Previous studies have shown that inosine, an endogenous purine, is able to exert a remarkable antidepressant-like effect in mice. Nevertheless, the role of glutamatergic system and mTOR in this effect was not previously determined. This study was designed to investigate the possible modulation of NMDA receptors (NMDAR), AMPA receptors (AMPAR) and mTOR complex 1 (mTORC1) signaling pathway in the inosine anti-immobility effect in the tail suspension test (TST) in mice...
July 10, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28680337/effects-of-reduced-glutathione-therapy-on-chronic-hepatitis-b
#14
Li Qian, Wenjun Wang, Yan Zhou, Jianxin Ma
Developed chronic hepatitis B (CHB) causes death in approximately one million patients every year. Therefore, natural drugs with high therapeutic efficacy and minimal side effects must be developed for CHB treatment. This study aimed to relate the therapeutic effects of glutathione on CHB. A total of 104 CHB patients were randomly divided into two groups: the control group, which received an intravenous drip of 0.4 g of inosine injection with 250 ml of 5% glucose once a day for eight weeks, and the treatment group, which received an intravenous drip of 1200 mg of glutathione on the basis of the treatment of the control group...
2017: Central-European Journal of Immunology
https://www.readbyqxmd.com/read/28674004/highly-selective-inhibition-of-impdh2-provides-the-basis-of-antineuroinflammation-therapy
#15
Li-Xi Liao, Xiao-Min Song, Li-Chao Wang, Hai-Ning Lv, Jin-Feng Chen, Dan Liu, Ge Fu, Ming-Bo Zhao, Yong Jiang, Ke-Wu Zeng, Peng-Fei Tu
Inosine monophosphate dehydrogenase (IMPDH) of human is an attractive target for immunosuppressive agents. Currently, small-molecule inhibitors do not show good selectivity for different IMPDH isoforms (IMPDH1 and IMPDH2), resulting in some adverse effects, which limit their use. Herein, we used a small-molecule probe specifically targeting IMPDH2 and identified Cysteine residue 140 (Cys140) as a selective druggable site. On covalently binding to Cys140, the probe exerts an allosteric regulation to block the catalytic pocket of IMPDH2 and further induces IMPDH2 inactivation, leading to an effective suppression of neuroinflammatory responses...
July 3, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28650902/itpa-activity-in-adults-and-children-treated-with-or-without-azathioprine-relationship-between-tpmt-activity-thiopurine-metabolites-and-co-medications
#16
Boulieu Roselyne, Antony Citterio-Quentin, Mustapha Moulsma, Marie-Paule Gustin
BACKGROUND: The implication of inosine triphosphate pyrophosphatase (ITPA) on thiopurine drug response variability has been investigated but little data is available on its role on thiopurine metabolites. ITPA' ability to modify the thiopurine metabolite levels currently used to optimize azathioprine (AZA) therapy in relation to TPMT activity, the aim of this study is to investigate ITPA phenotype in a large population and to evaluate the relation between ITPA and TPMT activities and thiopurine metabolites...
June 22, 2017: Therapeutic Drug Monitoring
https://www.readbyqxmd.com/read/28648976/synergistic-combination-of-murine-bone-marrow-derived-dendritic-cells-loaded-ex-vivo-with-whole-tumor-lysate-and-systemic-chemotherapy-mediates-antitumor-immune-responses-in-vivo
#17
Mohamed L Salem, Mohamed Nassef, Soha Gomaa, Ibrahim Essa
In order to get mature dendritic cells (DC) that is a crucial prerequisite for success in tumor immunotherapy protocols. Herein, we assumed that administration of murine bone marrow (BM)-derived DC (BM-DC), loaded ex vivo with whole Ehrlich ascites carcinoma (EAC) lysate, in the context of systemic chemotherapy cyclophosphamide (CTX) to induce antitumor immune responses, may be a good strategy to improve the presentation of tumor-specific antigens to the immune system. In the first series of experiments, BM cells generated either from BM of naïve mice or from BM of EAC-bearing mice were cultured in the presence of GM-CSF and IL-4 for 6days...
June 22, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28640667/restricting-retrotransposons-adar1-is-another-guardian-of-the-human-genome
#18
Elisa Orecchini, Loredana Frassinelli, Alessandro Michienzi
ADAR1 is an enzyme that belongs to the Adenosine Deaminases Acting on RNA (ADARs) family. These enzymes deaminate adenosines to inosines (RNA editing A-to-I) within double-stranded RNA regions in transcripts. Since inosines are recognized as guanosines by the cellular machinery, RNA editing mediated by ADARs can either lead to the formation of an altered protein (recoding) or affect different aspects of RNA metabolism. Recently, a proteomic analysis led to the identification of novel ADAR1-associated factors and found that a good fraction of them is shared with the Long Interspersed Element 1 (LINE-1 or L1) ribonucleoparticles (RNPs)...
June 22, 2017: RNA Biology
https://www.readbyqxmd.com/read/28622913/targeting-urate-to-reduce-oxidative-stress-in-parkinson-disease
#19
REVIEW
Grace F Crotty, Alberto Ascherio, Michael A Schwarzschild
Oxidative stress has been implicated as a core contributor to the initiation and progression of multiple neurological diseases. Genetic and environmental factors can produce oxidative stress through mitochondrial dysfunction leading to the degeneration of dopaminergic and other neurons underlying Parkinson disease (PD). Although clinical trials of antioxidants have thus far failed to demonstrate slowed progression of PD, oxidative stress remains a compelling target. Rather than prompting abandonment of antioxidant strategies, these failures have raised the bar for justifying drug and dosing selections and for improving study designs to test for disease modification by antioxidants...
June 13, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28618265/making-the-mark-the-role-of-adenosine-modifications-in-the-life-cycle-of-rna-viruses
#20
REVIEW
Sarah R Gonzales-van Horn, Peter Sarnow
Viral epitranscriptomics is a newly emerging field that has identified unique roles for RNA modifications in modulating life cycles of RNA viruses. Despite the observation of a handful of modified viral RNAs five decades ago, very little was known about how these modifications regulate viral life cycles, until recently. Here we review the pro- and anti-viral effects of methyl-6-adenosine in distinct viral life cycles, the role of 2' O-methyl modifications in RNA stability and innate immune sensing, and functions of adenosine to inosine modifications in retroviral life cycles...
June 14, 2017: Cell Host & Microbe
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