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biomarkers in stress

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https://www.readbyqxmd.com/read/28822345/assessment-of-oxidative-stress-and-bioaccumulation-of-the-metals-cu-fe-zn-pb-cd-in-the-polychaete-perinereis-gualpensis-from-estuaries-of-central-chile
#1
Hernán Gaete, Manuel Álvarez, Gabriela Lobos, Eulogio Soto, Carlos Jara-Gutiérrez
The estuaries of the Aconcagua and Maipo Rivers of central Chile are receptors of residues that contain metals from anthropic activities including agriculture, mining and smelters, which have different levels in the two basins. This study postulates that the exposition to metals is different in the two estuaries and that their sediments contain bioavailable chemical agents that produce oxidative stress. The aim of the study was to evaluate the effect of estuarine sediments on the polychaete Perinereis gualpensis using oxidative stress biomarkers and to determine the metal concentrations in sediments and their accumulation in P...
August 16, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28822264/trimethylamine-n-oxide-as-a-risk-factor-for-atherosclerosis-induces-stress-in-j774a-1-murine-macrophages
#2
Abbas Mohammadi, Zakaria Vahabzadeh, Soran Jamalzadeh, Tahereh Khalili
PURPOSE: Trimethylamine N-oxide (TMAO) is a biomarker for kidney problems. It has also been introduced as a risk factor for atherosclerosis. The classic risk factors for atherosclerosis trigger cellular and humeral immunoreaction in macrophages through induction of heat shock protein expressions and increased levels of GRP94 and HSP70 are associated with increased atherosclerosis risk. The present study evaluated the possible effect(s) of TMAO on the expression of GRP94 and HSP70 at protein levels...
August 16, 2017: Advances in Medical Sciences
https://www.readbyqxmd.com/read/28822080/soluble-epoxide-hydrolase-inhibition-attenuates-mptp-induced-neurotoxicity-in-the-nigrostriatal-dopaminergic-system-involvement-of-%C3%AE-synuclein-aggregation-and-er-stress
#3
Hui-Ju Huang, Yi-Ting Wang, Hui-Ching Lin, Yi-Hsuan Lee, Anya Maan-Yuh Lin
Soluble epoxide hydrolase (sEH) is widely expressed in the mammalian brain and possesses dual enzymatic activities, including C-terminal epoxide hydrolase (C-EH) which degrades epoxyeicosatrienoic acid (EET), a beneficial arachidonic acid metabolite. In the present study, the neuroprotective effect of sEH inhibition on 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced neurodegeneration of nigrostriatal dopaminergic system was investigated using genetic and pharmacological approaches. MPTP (15 mg/kg) was intraperitoneally injected in sEH knockout (KO) mice and C57BL/6J mice as wild-type (WT) mice...
August 18, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28822063/mind-body-therapies-in-cancer-what-is-the-latest-evidence
#4
REVIEW
Linda E Carlson, Erin Zelinski, Kirsti Toivonen, Michelle Flynn, Maryam Qureshi, Katherine-Ann Piedalue, Rachel Grant
PURPOSE OF REVIEW: Many people living with cancer use complementary therapies, and some of the most popular are mind-body therapies (MBTs), including relaxation and imagery, hypnosis, yoga, meditation, tai chi and qigong, and art therapies. The efficacy of these modalities was reviewed by assessing recent findings in the context of cancer care. RECENT FINDINGS: These therapies show efficacy in treating common cancer-related side effects, including nausea and vomiting, pain, fatigue, anxiety, depressive symptoms and improving overall quality of life...
August 18, 2017: Current Oncology Reports
https://www.readbyqxmd.com/read/28821850/comparative-metabonomics-of-wenxin-keli-and-verapamil-reveals-differential-roles-of-gluconeogenesis-and-fatty-acid-%C3%AE-oxidation-in-myocardial-injury-protection
#5
Miaomiao Jiang, Qiuying Wang, Jingrui Chen, Yanan Wang, Guanwei Fan, Yan Zhu
Metabonomics/metabolomics is a rapid technology for comprehensive profiling of small molecule metabolites in cells, tissues, or whole organisms, the application of which has led to understanding pathophysiologic mechanisms of cardiometabolic diseases, defining predictive biomarkers for those diseases, and also assessing the efficacious effects of incident drugs. In this study, proton nuclear magnetic resonance (NMR)-based metabonomics was employed to identify the metabolic changes in rat plasma caused by myocardial ischemia-reperfusion injury (MIRI), and to compare the metabolic regulatory differences between traditional Chinese medicine Wenxin Keli (WXKL) and Western medicine verapamil...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28820925/oxidative-stress-related-molecular-biomarker-candidates-for-glaucoma
#6
Gözde Hondur, Emre Göktas, Xiangjun Yang, Lama Al-Aswad, James D Auran, Dana M Blumberg, George A Cioffi, Jeffrey M Liebmann, Leejee H Suh, Danielle Trief, Gülgün Tezel
Purpose: Glaucoma-related molecular biomarkers can improve clinical testing to diagnose the disease early, predict its prognosis, and monitor treatment responses. Based on the evidence of increased oxidative stress in glaucomatous tissues, this study analyzed oxidative stress-related biomarker candidates in blood and aqueous humor samples with or without glaucoma. Methods: The blood and aqueous humor samples collected from carefully selected groups of 96 patients with glaucoma and 64 healthy subjects without glaucoma were included in the study...
August 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28819157/a-preliminary-investigation-of-the-association-of-sleep-with-inflammation-and-oxidative-stress-biomarkers-and-functional-outcomes-after-stroke-rehabilitation
#7
Ting-Ting Yeh, Yu-Wei Hsieh, Ching-Yi Wu, Jong-Shyan Wang, Keh-Chung Lin, Chia-Ling Chen
This study examined the association of sleep with inflammation and oxidative stress biomarkers, and with functional outcomes, after stroke rehabilitation. The rehabilitation effects on biomarkers and functional outcomes were also evaluated. Twenty subacute stroke survivors received 4 weeks of upper limb rehabilitation. Baseline inflammatory (i.e., soluble intercellular adhesion molecule-1, sICAM-1) and oxidative stress biomarkers (i.e., glutathione peroxidase, GPx and malondialdehyde, MDA) were assessed, as were sleep outcomes...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28818685/ethyl-carbamate-induces-cell-death-through-its-effects-on-multiple-metabolic-pathways
#8
Huichang Liu, Bo Cui, Yi Xu, Chaoyang Hu, Ying Liu, Guorun Qu, Dawei Li, Yongning Wu, Dabing Zhang, Sheng Quan, Jianxin Shi
Ethyl carbamate (EC), a multisite carcinogenic chemical causing tumors in various animal species, is probably carcinogenic to humans. However, information about the possible carcinogenic and toxicological effects of EC in humans is quite limited. Because EC is found in many dietary foods (such as fermented foods) and tobacco and its products, and exposure of humans to EC often occurs inevitably, its toxicological effects in humans need to be studied. This study was conducted to understand the metabolomic and transcriptomic changes in human hepatocellular carcinoma cells (HepG2) exposed to 100 mM EC for short term (4 h) and long term (12 h) period, respectively...
August 14, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28818511/vitamin-d-enhances-antiepileptic-and-cognitive-effects-of-lamotrigine-in-pentylenetetrazole-kindled-rats
#9
Ali F Abdel-Wahab, Mohamed A Afify, Amal M Mahfouz, Naiyer Shahzad, Ghazi A Bamagous, Saeed S Al Ghamdi
Despite long use of antiepileptic drugs, it remains a challenge to achieve seizure control while reducing adverse effects and preventing cognitive impairment. Several lines of evidence suggest a role of vitamin D in epilepsy. So this study aimed to investigate the effect of vitamin D on epileptogenesis, cognitive dysfunction and antiepileptic activity of lamotrigine, in a rat model of chemical kindling. Rats were kindled by pentylenetetrazole injections every other day over four weeks, together with daily oral treatment by either vehicle, vitamin D, lamotrigine or combination of vitamin D and lamotrigine...
August 14, 2017: Brain Research
https://www.readbyqxmd.com/read/28817980/pathways-to-pulmonary-hypertension-in-sickle-cell-disease-the-search-for-prevention-and-early-intervention
#10
Natalie R Shilo, Claudia R Morris
Pulmonary hypertension (PH) develops in a significant number of patients with sickle cell disease (SCD), resulting in increased morbidity and mortality. This review focuses on PH pathophysiology, risk stratification, and new recommendations for screening and treatment for patients with SCD. Areas covered: An extensive PubMed literature search was performed. While the pathophysiology of PH in SCD is yet to be fully deciphered, it is known that the etiology is multifactorial; hemolysis, hypercoagulability, hypoxemia, ischemic-reperfusion injury, oxidative stress, and genetic susceptibility all contribute in varying degrees to endothelial dysfunction...
August 18, 2017: Expert Review of Hematology
https://www.readbyqxmd.com/read/28817706/hiv-infection-antiretroviral-therapy-and-measures-of-endothelial-function-inflammation-metabolism-and-oxidative-stress
#11
Andrew Dysangco, Ziyue Liu, James H Stein, Michael P Dubé, Samir K Gupta
BACKGROUND: HIV-infected patients have an increased risk of cardiovascular disease (CVD). Impaired endothelial function is an early risk factor for CVD in the general population. It is presumed that HIV infection is associated with impaired endothelial function, but results have been inconsistent. OBJECTIVES: Our objectives were to determine the relationships between HIV infection, virologic suppression with antiretroviral therapy (ART), in vivo measures of conduit artery and microvascular endothelial function, and circulating biomarkers of pathways associated with CVD...
2017: PloS One
https://www.readbyqxmd.com/read/28815802/prophylactic-effects-of-ellagic-acid-and-rosmarinic-acid-on-doxorubicin-induced-neurotoxicity-in-rats
#12
Hanan A Rizk, Marwa A Masoud, Omar W Maher
Doxorubicin (DOX) is a chemotherapeutic agent widely used in human malignancies. Its long-term use cause neurobiological side effects. The aim of the present study was to investigate the prophylactic effect exerted by daily administration of ellagic acid (EA) and rosmarinic acid (RA) on DOX-induced neurotoxicity in rats. Our data showed that DOX-induced significant elevation of brain malondialdehyde, tumor necrosis factor-alpha (TNF-α), inducible nitric oxide synthase (iNOS), caspase-3, and cholinesterase associated with significant reduction in reduced glutathione, monoamines namely serotonin, dopamine, as well as norepinephrine...
August 16, 2017: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/28815790/evaluation-of-wastewater-treatment-by-ozonation-for-reducing-the-toxicity-of-contaminants-of-emerging-concern-to-rainbow-trout-oncorhynchus-mykiss
#13
Nicholas Maya, Jaden Evans, Deniz Nasuhoglu, Siavash Isazadeh, Viviane Yargeau, Chris D Metcalfe
While conventional wastewater treatment technologies are effective at removing many contaminants of emerging concern (CECs) from municipal wastewater, some contaminants are not removed efficiently. Ozonation may be a treatment option for reducing the concentrations of recalcitrant CECs in wastewater, but this process may generate toxic transformation-products. In the present study, we conducted semi-batch experiments to ozonate municipal wastewater effluent (WWE) spiked with 5 commonly detected CECs. The purpose of the study was to evaluate whether ozonation increased or decreased biological responses indicative of sublethal toxicity in juvenile rainbow trout (Oncorhynchus mykiss) injected intraperitoneally (i...
August 16, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28815233/the-protective-effect-of-acerola-malpighia-emarginata-against-oxidative-damage-in-human-dermal-fibroblasts-through-the-improvement-of-antioxidant-enzyme-activity-and-mitochondrial-functionality
#14
José M Alvarez-Suarez, Francesca Giampieri, Massimiliano Gasparrini, Luca Mazzoni, Celestino Santos-Buelga, Ana M González-Paramás, Tamara Y Forbes-Hernández, Sadia Afrin, Timothy Páez-Watson, José L Quiles, Maurizio Battino
Acerola fruits (Malpighia emarginata DC.) from the central region of Cuba were analyzed to determine their chemical composition and protective capacity against oxidative damage using an in vitro human dermal fibroblast (HDFa) model. The chemical composition analyses showed a high content of vitamin C, total polyphenols, β-carotene and folates in the acerola fruit. From the HPLC-DAD/ESI-MS(n) analyses, two anthocyanins (cyanidin 3-O-rhamnoside and pelargonidin 3-O-rhamnoside), three hydroxycinnamoyl derivatives (caffeoyl hexoside, dihydrocaffeoylquinic acid and coumaroyl hexoside) and fifteen flavonols (mostly glycosylated forms of quercetin and kaempferol) were detected...
August 17, 2017: Food & Function
https://www.readbyqxmd.com/read/28814584/examining-self-reported-and-biological-stress-and-near-misses-among-emergency-medicine-residents-a-single-centre-cross-sectional-assessment-in-the-usa
#15
Bengt B Arnetz, Philip Lewalski, Judy Arnetz, Karen Breejen, Karin Przyklenk
OBJECTIVES: To examine the relationship between perceived and biological stress and near misses among Emergency Medicine residents. DESIGN: Self-rated stress and stress biomarkers were assessed in residents in Emergency Medicine before and after a day shift. The supervising physicians and residents reported numbers of near misses. SETTING: The study took place in the Emergency Department of a large trauma 1 centre, located in Detroit, USA...
August 15, 2017: BMJ Open
https://www.readbyqxmd.com/read/28811385/circulating-mir-200c-is-up-regulated-in-paediatric-patients-with-familial-hypercholesterolaemia-and-correlates-with-mir-33a-b-levels-implication-of-a-zeb1-dependent-mechanism
#16
Marco D'Agostino, Francesco Martino, Sara Sileno, Francesco Barilla, Sara Beji, Lorenza Marchetti, Fabio Maria Gangi, Luca Persico, Mario Picozza, Anna Montali, Eliana Martino, Cristina Zanoni, Daniele Avitabile, Sandro Parrotto, Maurizio C Capogrossi, Alessandra Magenta
Hypercholesterolaemia provokes reactive oxygen species (ROS) increase and is a major risk factor for cardiovascular diseases (CVD) development. We previously showed that circulating microRNA(miR)-33a/b expression levels were up-regulated in children with familial hypercholesterolaemia (FH). miR-33a/b control cholesterol homoeostasis and recently miR-33b has been demonstrated to directly target the transcription factor ZEB1. The latter acts in a negative feedback-loop with miR-200 family. Our previous studies showed that the ROS-dependent miR-200c up-regulation induces endothelial dysfunction and provokes a ZEB1-dependent apoptosis and senescence...
August 15, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28809857/grandmaternal-stress-during-pregnancy-and-dna-methylation-of-the-third-generation-an-epigenome-wide-association-study
#17
F Serpeloni, K Radtke, S G de Assis, F Henning, D Nätt, T Elbert
Stress during pregnancy may impact subsequent generations, which is demonstrated by an increased susceptibility to childhood and adulthood health problems in the children and grandchildren. Although the importance of the prenatal environment is well reported with regards to future physical and emotional outcomes, little is known about the molecular mechanisms that mediate the long-term consequences of early stress across generations. Recent studies have identified DNA methylation as a possible mediator of the impact of prenatal stress in the offspring...
August 15, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28808955/exploring-the-biological-and-mechanical-properties-of-abdominal-aortic-aneurysms-using-uspio-mri-and-peak-tissue-stress-a-combined-clinical-and-finite-element-study
#18
Noel Conlisk, Rachael O Forsythe, Lyam Hollis, Barry J Doyle, Olivia M B McBride, Jennifer M J Robson, Chengjia Wang, Calum D Gray, Scott I K Semple, Tom MacGillivray, Edwin J R van Beek, David E Newby, Peter R Hoskins
Inflammation detected through the uptake of ultrasmall superparamagnetic particles of iron oxide (USPIO) on magnetic resonance imaging (MRI) and finite element (FE) modelling of tissue stress both hold potential in the assessment of abdominal aortic aneurysm (AAA) rupture risk. This study aimed to examine the spatial relationship between these two biomarkers. Patients (n = 50) > 40 years with AAA maximum diameters > = 40 mm underwent USPIO-enhanced MRI and computed tomography angiogram (CTA). USPIO uptake was compared with wall stress predictions from CTA-based patient-specific FE models of each aneurysm...
August 14, 2017: Journal of Cardiovascular Translational Research
https://www.readbyqxmd.com/read/28808823/vessel-wall-characterization-using-quantitative-mri-what-s-in-a-number
#19
REVIEW
Bram F Coolen, Claudia Calcagno, Pim van Ooij, Zahi A Fayad, Gustav J Strijkers, Aart J Nederveen
The past decade has witnessed the rapid development of new MRI technology for vessel wall imaging. Today, with advances in MRI hardware and pulse sequences, quantitative MRI of the vessel wall represents a real alternative to conventional qualitative imaging, which is hindered by significant intra- and inter-observer variability. Quantitative MRI can measure several important morphological and functional characteristics of the vessel wall. This review provides a detailed introduction to novel quantitative MRI methods for measuring vessel wall dimensions, plaque composition and permeability, endothelial shear stress and wall stiffness...
August 14, 2017: Magma
https://www.readbyqxmd.com/read/28808475/yacon-smallanthus-sonchifolius-leaf-extract-attenuates-hyperglycemia-and-skeletal-muscle-oxidative-stress-and-inflammation-in-diabetic-rats
#20
Klinsmann Carolo Dos Santos, Bianca Guerra Bueno, Luana Ferreira Pereira, Fabiane Valentini Francisqueti, Mariana Gobbo Braz, Lahis Fernandes Bincoleto, Lilian Xavier da Silva, Ana Lúcia A Ferreira, Ana Cláudia de Melo Stevanato Nakamune, C-Y Oliver Chen, Jeffrey B Blumberg, Camila Renata Corrêa
The effects of hydroethanolic extract of Yacon leaves (HEYL) on antioxidant, glycemic, and inflammatory biomarkers were tested in diabetic rats. Outcome parameters included glucose, insulin, interleukin-6 (IL-6), and hydrophilic antioxidant capacity (HAC) in serum and IL-6, HAC, malondialdehyde (MDA), superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPx) in soleus. The rats (10/group) were divided as follows: C, controls; C + Y, HEYL treated; DM, diabetic controls; and DM + Y, diabetic rats treated with HEYL...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
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