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https://www.readbyqxmd.com/read/29241072/combined-efficacy-of-oseltamivir-isoprinosine-and-ellagic-acid-in-influenza-a-h3n2-infected-mice
#1
Elitsa L Pavlova, Lora S Simeonova, Galina A Gegova
Influenza pathogenesis comprises a complex cascade of impaired cellular processes resulting from the viral replication and exaggerated immune response accompanied by reactive oxygen species (ROS) burst and oxidative stress, destructing membranous structures and tissues. By classical virological and biochemical methods we compared and evaluated the therapeutic effects of 2.5mg/kg/day of the antiviral drug - oseltamivir (OS), 500mg/kg/day of the immune modulator - isoprinosine (IP) and 500mg/kg/day of the antioxidant agent ellagic acid (EA) with a focus on their combined activities in influenza H3N2 virus-infected mice...
December 11, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29240668/heat-shock-proteins-in-vascular-diabetic-complications-review-and-future-perspective
#2
REVIEW
Stefania Bellini, Federica Barutta, Raffaella Mastrocola, Luigi Imperatore, Graziella Bruno, Gabriella Gruden
Heat shock proteins (HSPs) are a large family of proteins highly conserved throughout evolution because of their unique cytoprotective properties. Besides assisting protein refolding and regulating proteostasis under stressful conditions, HSPs also play an important role in protecting cells from oxidative stress, inflammation, and apoptosis. Therefore, HSPs are crucial in counteracting the deleterious effects of hyperglycemia in target organs of diabetes vascular complications. Changes in HSP expression have been demonstrated in diabetic complications and functionally related to hyperglycemia-induced cell injury...
December 14, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29239349/influences-of-ivabradine-treatment-on-serum-levels-of-cardiac-biomarkers-sst2-gdf-15-supar-and-h-fabp-in-patients-with-chronic-heart-failure
#3
Peter Jirak, Dzeneta Fejzic, Vera Paar, Bernhard Wernly, Rudin Pistulli, Ilonka Rohm, Christian Jung, Uta C Hoppe, P Christian Schulze, Michael Lichtenauer, Atilla Yilmaz, Daniel Kretzschmar
Chronic heart failure (CHF) represents a major cause of hospitalization and death. Recent evidence shows that novel biomarkers such as soluble suppression of tumorigenicity (sST2), growth-differentiation factor-15 (GDF-15), soluble urokinase plasminogen activator receptor (suPAR) and heart-type fatty acid binding protein (H-FABP) are correlated with inflammatory and ischemic responses in CHF patients. In this study we examined the effects of Ivabradine that inhibited the hyperpolarization-activated cyclic nucleotide-gated channel (HCN channel, also called funny current If), thereby leading to selective heart rate reduction and improved myocardial oxygen supply on the cardiac biomarkers sST2, GDF-15, suPAR and H-FABP in 50 CHF patients at the University Hospital of Jena...
December 14, 2017: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/29238860/antioxidant-responses-in-the-earthworm-aporrectodea-caliginosa-of-eastern-slovakia-application-of-principal-component-analysis-as-a-tool-to-identify-metal-contaminated-areas
#4
Sulata Maity, Janka Poráčová, Partha Dey, Janka Vašková, Ladislav Vaško, Vincent Sedlák, Marta Mydlárová Blaščáková
The soil of Slovak Republic is severely contaminated with heavy metals, creating hazards to soil health. In order to assess the current status with the prospect of selecting the appropriate treatment methods and land use, this investigation aimed to determine a panel of complementary and ecologically relevant biomarkers that reflect adverse biological responses towards terrestrial pollutants. To attain this objective, the concentration of reduced glutathione and enzymes of glutathione antioxidant system were assessed in clitellate earthworm, Aporrectodea caliginosa sampled from selected sites of eastern Slovakia along with the pH and total metal concentration (As, Cd, Pb, Cr, Hg, Mn, Fe, Co, Ni, Cu, Zn) of soils...
December 14, 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/29237677/genome-wide-association-study-implicates-atrial-natriuretic-peptide-rather-than-b-type-natriuretic-peptide-in-the-regulation-of-blood-pressure-in-the-general-population
#5
Perttu P Salo, Aki S Havulinna, Taru Tukiainen, Olli Raitakari, Terho Lehtimäki, Mika Kähönen, Johannes Kettunen, Minna Männikkö, Johan G Eriksson, Antti Jula, Stefan Blankenberg, Tanja Zeller, Veikko Salomaa, Kati Kristiansson, Markus Perola
BACKGROUND: Cardiomyocytes secrete atrial natriuretic peptide (ANP) and B-type natriuretic peptide (BNP) in response to mechanical stretching, making them useful clinical biomarkers of cardiac stress. Both human and animal studies indicate a role for ANP as a regulator of blood pressure with conflicting results for BNP. METHODS AND RESULTS: We used genome-wide association analysis (n=6296) to study the effects of genetic variants on circulating natriuretic peptide concentrations and compared the impact of natriuretic peptide-associated genetic variants on blood pressure (n=27 059)...
December 2017: Circulation. Cardiovascular Genetics
https://www.readbyqxmd.com/read/29237550/the-effects-of-dna-methylation-on-human-psychology
#6
REVIEW
Farzeen Kader, Meenu Ghai, Leah Maharaj
DNA methylation is a fundamental epigenetic modification in the human genome; pivotal in development, genomic imprinting, X inactivation, chromosome stability, gene expression and methylation aberrations are involved in an array of human diseases. Methylation at promoters is associated with transcriptional repression, whereas gene body methylation is generally associated with gene expression. Extrinsic factors such as age, diets and lifestyle affect DNA methylation which consequently alters gene expression...
December 10, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/29237424/p53r2-as-a-novel-prognostic-biomarker-in-nasopharyngeal-carcinoma
#7
Jiewei Chen, Shuman Li, Yongbo Xiao, Xuan Zou, Xinke Zhang, Mingshu Zhu, Muyan Cai, Dan Xie
BACKGROUND: p53R2 is a target of p53 gene, which is essential for DNA repair, mitochondrial DNA synthesis, protection against oxidative stress, chromosomal instability, chronic inflammation and tumorigenesis. This study is aimed to investigate the expression of ribonucleotide reductase (RR) subunit p53R2 in nasopharyngeal carcinoma and its significance in the prognosis. METHODS: The expression levels of p53R2 in 201 patients with NPC were examined by immunohistochemical assay...
December 13, 2017: BMC Cancer
https://www.readbyqxmd.com/read/29236729/genome-wide-analysis-of-atlantic-salmon-salmo-salar-mucin-genes-and-their-role-as-biomarkers
#8
Lene Rydal Sveen, Fabian Thomas Grammes, Elisabeth Ytteborg, Harald Takle, Sven Martin Jørgensen
The aim of this study was to identify potential mucin genes in the Atlantic salmon genome and evaluate tissue-specific distribution and transcriptional regulation in response to aquaculture-relevant stress conditions in post-smolts. Seven secreted gel-forming mucin genes were identified based on several layers of evidence; annotation, transcription, phylogeny and domain structure. Two genes were annotated as muc2 and five genes as muc5. The muc2 genes were predominantly transcribed in the intestinal region while the different genes in the muc5 family were mainly transcribed in either skin, gill or pyloric caeca...
2017: PloS One
https://www.readbyqxmd.com/read/29236706/contrasting-amino-acid-profiles-among-permissive-and-non-permissive-hosts-of-candidatus-liberibacter-asiaticus-putative-causal-agent-of-huanglongbing
#9
Mamoudou Sétamou, Olufemi J Alabi, Catherine R Simpson, John L Jifon
Huanglongbing is a devastating disease of citrus. In this study, a comprehensive profile of phloem sap amino acids (AA) in four permissive host plants of Candidatus Liberibacter asiaticus (CLas) and three non-permissive Rutaceae plants was conducted to gain a better understanding of host factors that may promote or suppress the bacterium. The AA profiles of Diaphorina citri nymphs and adults were similarly analyzed. A total of 38 unique AAs were detected in phloem sap of the various plants and D. citri samples, with phloem sap of young shoots containing more AAs and at higher concentrations than their mature counterparts...
2017: PloS One
https://www.readbyqxmd.com/read/29233792/n-acetylcysteine-supplementation-increases-exercise-performance-and-reduces-oxidative-stress-only-in-individuals-with-low-levels-of-glutathione
#10
Vassilis Paschalis, Anastasios A Theodorou, Nikos V Margaritelis, Antonios Kyparos, Michalis G Nikolaidis
Most of the evidence indicates that chronic antioxidant supplementation induces negative effects in healthy individuals. However, it is currently unknown whether specific redox deficiencies exist and whether targeted antioxidant interventions in deficient individuals can induce positive effects. We hypothesized that the effectiveness of antioxidant supplements to decrease oxidative stress and promote exercise performance depends on the redox status of the individuals that receive the antioxidant treatment. To this aim, we investigated whether N-acetylcysteine (NAC) supplementation would enhance exercise performance by increasing glutathione concentration and by reducing oxidative stress only in individuals with low resting levels of glutathione...
December 9, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/29233479/monitoring-neurodegeneration-in-glaucoma-therapeutic-implications
#11
REVIEW
Norimitsu Ban, Carla J Siegfried, Rajendra S Apte
Glaucoma is one of the leading causes of blindness globally, and is characterized by loss of retinal ganglion cells (RGCs). Because vision loss in glaucoma is not reversible, therapeutic interventions early in disease are highly desirable. However, owing to the current limitations in evaluating glaucomatous neurodegeneration, it is challenging to monitor the disease severity and progression objectively, and to design rational therapeutic strategies accordingly. Therefore, there is a clear need to identify quantifiable molecular biomarkers of glaucomatous neurodegeneration...
December 7, 2017: Trends in Molecular Medicine
https://www.readbyqxmd.com/read/29230481/biological-responses-in-brook-trout-salvelinus-fontinalis-caged-downstream-from-municipal-wastewater-treatment-plants-in-the-credit-river-on-canada
#12
Stephen McGovarin, Tamanna Sultana, Chris Metcalfe
To determine whether discharges of contaminants from municipal wastewater treatment plants (WWTPs) may be contributing to the decline in populations of brook trout (Salvelinus fontinalis) in the watershed of the Credit River in ON, Canada, we caged juvenile brook trout upstream and downstream of the WWTPs of the small communities of Acton and Orangeville. Levels of vitellogenin were significantly elevated in liver tissue of trout caged downstream of both WWTPs, indicating exposure to estrogenic substances. Levels of thiobarbituric acid reactive substances indicative of oxidation of lipids were elevated in the gill tissue of brook trout caged downstream of the Orangeville WWTP, and levels of total glutathione were significantly lower in the gills of brook trout caged downstream of the Acton WWTP...
December 11, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/29229598/cdkn2a-p16-deletion-in-head-and-neck-cancer-cells-is-associated-with-cdk2-activation-replication-stress-and-vulnerability-to-chk1-inhibition
#13
Mayur A Gadhikar, Jiexin Zhang, Li Shen, Xiayu Rao, Jing Wang, Mei Zhao, Nene N Kalu, Faye M Johnson, Lauren A Byers, John Heymach, Walter N Hittelman, Durga Udayakumar, Raj K Pandita, Tej K Pandita, Curtis R Pickering, Abena Redwood, Helen Piwnica-Worms, Katharina Schlacher, Mitchell J Frederick, Jeffrey N Myers
Checkpoint kinase inhibitors (CHKi) exhibit striking single agent activity in certain tumors, but the mechanisms accounting for hypersensitivity are poorly understood. We screened a panel of 49 established human head and neck squamous cell carcinoma (HNSCC) cell lines and report that nearly 20% are hypersensitive to CHKi monotherapy. Hypersensitive cells underwent early S-phase arrest at drug doses sufficient to inhibit greater than 90% of Chk1 activity. Reduced rate of DNA replication fork progression and chromosomal shattering were also observed, suggesting replication stress as a root causative factor in CHKi hypersensitivity...
December 11, 2017: Cancer Research
https://www.readbyqxmd.com/read/29229550/cardiovascular-disease-risk-factors-and-oxidative-stress-among-premenopausal-women
#14
Chelsea Anderson, Ginger L Milne, Yong-Moon Mark Park, Dale P Sandler, Hazel B Nichols
Oxidative stress is one hypothesized mechanism linking anthropometric, behavioral, and medical risk factors with cardiovascular disease (CVD). We evaluated cross-sectional associations between CVD risk factors and biomarkers of oxidative stress, and investigated these biomarkers as predictors of incident diabetes and hypertension among premenopausal women. F2-isoprostane (F2-IsoP) and metabolite (15-F2t-IsoP-M), reliable biomarkers of oxidative stress, were measured in urine samples collected at enrollment from 897 premenopausal women (ages 35-54) enrolled in the Sister Study cohort without a CVD history...
December 8, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/29228526/study-of-serum-malondialdehyde-level-in-opioid-and-methamphetamine-dependent-patients
#15
Khadije Najafi, Sajad Ahmadi, Mahdi Rahpeyma, Habibolah Khazaie, Asad Vaisi-Raygani, Ali Moini, Amir Kiani
Opioid compound and methamphetamine are commonly used in drug abuse; these can disrupt the normal function of cellular and molecular systems, leading to several events such as oxidative stress, aging, apoptosis, and necrosis. Malondialdehyde (MDA) is the most important biomarker for evaluation of oxidative stress and determination of lipid peroxidation. In this study, 42 drug abusers and 22 healthy persons participated as case and control groups, respectively. MDA in volunteer sera was determined by high-performance liquid chromatography (HPLC) with fluorescence detection after pre-column derivatization using thiobarbituric acid...
October 2017: Acta Medica Iranica
https://www.readbyqxmd.com/read/29227447/heat-shock-proteins-in-human-perilymph-implications-for-cochlear-implantation
#16
Heike Schmitt, Ariane Roemer, Carsten Zeilinger, Rolf Salcher, Martin Durisin, Hinrich Staecker, Thomas Lenarz, Athanasia Warnecke
OBJECTIVE: Biomarkers reflecting the etiology and pathophysiology of inner ear diseases are limited. Evaluation of proteins in the perilymph may improve our understanding of inner ear disease. Heat shock proteins (HSP) belong to a superfamily of stress proteins and promote refolding of denatured proteins. The aim of the study was to analyze HSP in human perilymph and to identify possible correlation with audiological and etiologic data. METHODS: Sampling of the perilymph was performed during cochlear implantation and vestibular schwannoma removal...
January 2018: Otology & Neurotology
https://www.readbyqxmd.com/read/29226998/antisense-suppression-of-glial-fibrillary-acidic-protein-as-a-treatment-for-alexander-disease
#17
Tracy L Hagemann, Berit Powers, Curt Mazur, Aneeza Kim, Steven Wheeler, Gene Hung, Eric Swayze, Albee Messing
OBJECTIVE: Alexander disease is a fatal leukodystrophy caused by autosomal dominant gain-of-function mutations in the gene for glial fibrillary acidic protein (GFAP), an intermediate filament protein primarily expressed in astrocytes of the central nervous system. A key feature of pathogenesis is over-expression and accumulation of GFAP, with formation of characteristic cytoplasmic aggregates known as Rosenthal fibers. Here we investigate whether suppressing GFAP with antisense oligonucleotides could provide a therapeutic strategy for treating Alexander disease...
December 11, 2017: Annals of Neurology
https://www.readbyqxmd.com/read/29225708/ranges-of-phenotypic-flexibility-in-healthy-subjects
#18
T J van den Broek, G C M Bakker, C M Rubingh, S Bijlsma, J H M Stroeve, B van Ommen, M J van Erk, S Wopereis
Background: A key feature of metabolic health is the ability to adapt upon dietary perturbations. A systemic review defined an optimal nutritional challenge test, the "PhenFlex test" (PFT). Recently, it has been shown that the PFT enables the quantification of all relevant metabolic processes involved in maintaining or regaining homeostasis of metabolic health. Furthermore, it was demonstrated that quantification of PFT response was more sensitive as compared to fasting markers in demonstrating reduced phenotypic flexibility in metabolically impaired type 2 diabetes subjects...
2017: Genes & Nutrition
https://www.readbyqxmd.com/read/29224235/long-term-cardiovascular-re-programming-by-short-term-perinatal-exposure-to-nicotine-s-main-metabolite-cotinine
#19
Stefano Bastianini, Viviana Lo Martire, Alessandro Silvani, Giovanna Zoccoli, Chiara Berteotti, Hugo Lagercrantz, Anders Arner, Gary Cohen
AIM: Gather "proof-of-concept" evidence of the adverse developmental potential of cotinine (a seemingly benign biomarker of recent nicotine / tobacco smoke exposure). METHODS: Pregnant C57 mice drank nicotine or cotinine-laced water for 6wks from conception (NPRE = 2% saccharin+100μg nicotine/ml; CPRE = 2% saccharin + 10μg cotinine/ml) or 3wks after birth (CPOST = 2% saccharin + 30μg cotinine/ml). Controls drank 2% saccharin (CTRL). At 17±1weeks (male pups; CTRL n=6; CPOST n=6; CPRE n=8; NPRE n=9) we assessed (i) cardiovascular control during sleep; (ii) arterial reactivity ex vivo; (iii) expression of genes involved in arterial constriction / dilation...
December 9, 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/29224009/itraq-based-proteomics-analysis-of-acute-lung-injury-induced-by-oleic-acid-in-mice
#20
Xiaotao Xu, Qingwei Zhu, Rong Zhang, Yan Wang, Fangfang Niu, Wenying Wang, Dawei Sun, Aizhong Wang
BACKGROUND/AIMS: This study was conducted to investigate the relationship between differentially expressed proteins (DEPs) and the pathogenesis of oleic acid (OA)-induced acute lung injury (ALI) in mice. METHODS: Eight-week-old male C57BL/6 mice were injected with OA through the tail vein and sacrificed 6 hours after OA administration to identify protein expression levels in lung tissue using isobaric tags for relative and absolute quantification (iTRAQ) technology...
December 8, 2017: Cellular Physiology and Biochemistry
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