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https://www.readbyqxmd.com/read/29929086/positive-and-negative-social-support-and-hpa-axis-hyperactivity-evidence-from-glucocorticoids-in-human-hair
#1
Eleonora Iob, Clemens Kirschbaum, Andrew Steptoe
INTRODUCTION: While positive social support is associated with lower prevalence of disease and better treatment outcomes, negative social relationships can instead have unfavourable consequences for several physical and mental health conditions. However, the specific mechanisms by which this nexus might operate remain poorly understood. Hypothalamic-pituitary-adrenal (HPA) axis hyperactivity owing to psychosocial stress has been proposed as a potential pathway underlying the link between social support and health...
June 12, 2018: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29929065/the-effect-of-leonardite-and-lignite-on-the-health-of-weaned-piglets
#2
Martina Trckova, Alena Lorencova, Vladimir Babak, Jiri Neca, Miroslav Ciganek
A three-week trial was conducted to evaluate the effects of leonardite and lignite, natural sources of humic substances, on selected indicators of health status of weaned piglets. A total of 45 weaned piglets were assigned to three dietary treatments: Control - basal diet without any medication; Leonardite or Lignite - diet supplemented with lignite or leonardite at a dose of 20 g/kg, respectively. Leonardite differed from lignite in the content of humic substances and minerals. Diarrhoea incidence and severity, growth performance, haematological and biochemical status, biomarkers of oxidative stress, serum fatty acid (FA) profile and faecal microbiota composition were monitored...
June 12, 2018: Research in Veterinary Science
https://www.readbyqxmd.com/read/29928993/urate-mitigates-oxidative-stress-and-motor-neuron-toxicity-of-astrocytes-derived-from-als-linked-sod1-g93a-mutant-mice
#3
Rachit Bakshi, Yuehang Xu, Kaly A Mueller, Xiqun Chen, Eric Granucci, Sabrina Paganoni, Ghazaleh Sadri-Vakili, Michael A Schwarzschild
Dominant mutations in an antioxidant enzyme superoxide dismutase-1 (SOD1) cause amyotrophic lateral sclerosis (ALS), an adult-onset neurodegenerative disease characterized by loss of motor neurons. Oxidative stress has also been linked to many of the neurodegenerative diseases and is likely a central mechanism of motor neuron death in ALS. Astrocytes derived from mutant SOD1G93A mouse models or patients play a significant role in the degeneration of spinal motor neurons in ALS through a non-cell-autonomous process...
June 18, 2018: Molecular and Cellular Neurosciences
https://www.readbyqxmd.com/read/29928190/mitochondria-and-mood-mitochondrial-dysfunction-as-a-key-player-in-the-manifestation-of-depression
#4
REVIEW
Josh Allen, Raquel Romay-Tallon, Kyle J Brymer, Hector J Caruncho, Lisa E Kalynchuk
Human and animal studies suggest an intriguing link between mitochondrial diseases and depression. Although depression has historically been linked to alterations in monoaminergic pharmacology and adult hippocampal neurogenesis, new data increasingly implicate broader forms of dampened plasticity, including plasticity within the cell. Mitochondria are the cellular powerhouse of eukaryotic cells, and they also regulate brain function through oxidative stress and apoptosis. In this paper, we make the case that mitochondrial dysfunction could play an important role in the pathophysiology of depression...
2018: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29926516/serum-albumin-inflammation-and-nutrition-in-end-stage-renal-disease-c-reactive-protein-is-needed-for-optimal-assessment
#5
EDITORIAL
Hideyuki Mukai, Hilda Villafuerte, Abdul Rashid Qureshi, Bengt Lindholm, Peter Stenvinkel
Low serum albumin (S-Alb) is a frequent feature of end-stage renal disease (ESRD) that independently predicts mortality. Serum albumin has mainly been considered a biomarker of visceral protein and immunocompetence status, fundamental to nutritional assessment. However, low S-albumin level is associated with persistent systemic inflammation and many bodies of evidence show that S-Alb has a limited role as a marker of nutritional status. We reported that a low S-Alb concentration was an independent risk factor for poor outcome in ESRD only in the presence of systemic inflammation...
June 21, 2018: Seminars in Dialysis
https://www.readbyqxmd.com/read/29926288/allostasis-and-sedation-practices-in-intensive-care-evaluation-an-observational-pilot-study
#6
John P R Moore, Chris Anstey, Lauren Murray, John F Fraser, Mervyn Singer
BACKGROUND: A dysregulated stress response has been implicated in the pathogenesis of critical illness. Sedative agents utilised in the critically unwell patient may impact upon the stress response with a downstream negative effect on multiple organ systems. This study was designed to assess the feasibility of investigating components of the stress response as a sub-study of the current SPICE-III study (NCT01728558). METHODS: This pilot observational cohort study was conducted in a single intensive care unit in Queensland, Australia...
June 20, 2018: Intensive Care Medicine Experimental
https://www.readbyqxmd.com/read/29923734/reconfigurable-carbon-nanotube-multiplexed-sensing-devices
#7
Xinzhao Xu, Pierrick Clement, Johnas Eklöf-Österberg, Nancy Kelley-Loughnane, Kasper Moth-Poulsen, Jorge Luis Chávez, Matteo Palma
Here we report on the fabrication of reconfigurable and solution processable nanoscale biosensors with multi-sensing capability, based on single walled carbon nanotubes (SWCNTs). Distinct DNA-wrapped (hence water-soluble) CNTs were immobilised from solution onto different pre-patterned electrodes on the same chip, via a low-cost dielectrophoresis (DEP) methodology. The CNTs were functionalised with specific, and different, aptamer sequences that were employed as selective recognition elements for biomarkers indicative of stress and neuro-trauma conditions...
June 20, 2018: Nano Letters
https://www.readbyqxmd.com/read/29922426/metformin-attenuated-sepsis-induced-oxidative-damages-a-novel-role-for-metformin
#8
Hamed Ghavimi, Sasan Sheidaei, Haleh Vaez, Elmira Zolali, Parina Asgharian, Hadi Hamishehkar
Objectives: Sepsis can result in severe organ injury by provoking inflammatory cascades and oxidative stress. Several studies are currently underway to find a drug with anti-inflammatory effects to prevent mortality and morbidity during sepsis. The present study was undertaken to assess the effects of metformin on oxidative stress and antioxidant status in sepsis induced by the Cecal Ligation and Puncture (CLP) method. Materials and Methods: Male Wistar rats were divided into 4 groups (n=10): sham, CLP, and 50 and 100 mg/kg metformin-treated CLP groups...
May 2018: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/29917063/sodium-intake-is-associated-with-endothelial-damage-biomarkers-and-metabolic-dysregulation
#9
Carmen Campino, Rene Baudrand, Carolina Valdivia, Cristian Carvajal, Andrea Vecchiola, Alejandra Tapia-Castillo, Alejandro Martínez-Aguayo, Hernán Garcia, Lorena García, Fidel Allende, Sandra Solari, Cristóbal Fuentes, Calos F Lagos, Maria Paulina Rojas, Doris Muñoz, Carlos Fardella
Background: Mounting evidence has associated high sodium intake with hypertension, cardiovascular disease and stroke. We investigated whether high sodium intake modulates the parameters of endothelial damage, inflammation and oxidative stress. Methods: We used a cross-sectional study design including 223 Chilean subjects (6.9-65.0 years old). We measured aldosterone, renin activity, cortisol, cortisone, adiponectin, leptin, hs-CRP, IL-6, TNF-alpha, PAI-1, metalloproteinase (MMP)-9 and MMP-2 activity and malondialdehyde (MDA)...
June 16, 2018: American Journal of Hypertension
https://www.readbyqxmd.com/read/29916842/understanding-survivors-needs-and-outcomes-the-role-of-routinely-collected-data
#10
Liya Lu, Jennifer Deane, Linda Sharp
PURPOSE OF REVIEW: The number of cancer survivors is growing due to population ageing, earlier detection and more effective therapies. Routinely collected data (RCD), generally cancer registry data, has been used to investigate survivors' needs and outcomes. We reviewed uses of RCD since 2017, identifying novel findings and research directions. RECENT FINDINGS: Survival is improving internationally but continues to vary between subgroups. Longitudinal survivor surveys suggest malignancy-specific temporal patterns in unmet needs and health-related quality-of-life (HRQoL)...
June 18, 2018: Current Opinion in Supportive and Palliative Care
https://www.readbyqxmd.com/read/29915575/gingival-periodontal-disease-pd-level-butyric-acid-affects-the-systemic-blood-and-brain-organ-insights-into-the-systemic-inflammation-of-periodontal-disease
#11
Marni E Cueno, Kuniyasu Ochiai
Butyric acid (BA) is produced by periodontopathic bacterial pathogens and contributes to periodontal disease (PD) induction. Moreover, PD has been associated with detrimental effects which subsequently may lead to systemic disease (SD) development affecting certain organs. Surprisingly, the potential systemic manifestations and organ-localized effects of BA have never been elucidated. Here, we simulated BA-based oral infection among young (20-week-old) rats and isolated blood cytosol to determine BA effects on stress network-related signals [total heme, hydrogen peroxide (H2 O2 ), catalase (CAT), glutathione reductase (GR), free fatty acid (FFA), NADP/NADPH], inflammation-associated signals [caspases (CASP12 and CASP1), IL-1β, TNF-α, metallomatrix proteinase-9 (MMP-9), and toll-like receptor-2 (TLR2)], and neurological blood biomarkers [presenilin (PS1 and PS2) and amyloid precursor protein (APP)]...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29915507/use-of-goat-interleukin-6-cortisol-and-some-biomarkers-to-evaluate-clinical-suitability-of-two-routes-of-ascorbic-acid-administration-in-transportation-stress
#12
K T Biobaku, T O Omobowale, Ahmed O Akeem, A Aremu, N Okwelum, A S Adah
Aim: The study determined the effect of ascorbic acid (administered orally and intramuscularly) in short-term transportation stress. Materials and Methods: Twenty-four apparently healthy Kalahari goats were grouped into four groups (A, B, C, and D) of 6 animals each: Group A - untreated and unexposed to stress; Group B - treated with 200 mg/kg Vitamin C orally and exposed to 2 h transportation stress; Group C - treated with Vitamin C 200 mg/kg intramuscularly and exposed to 2 h transportation stress; and Group D - untreated and exposed to 2 h transportation stress...
May 2018: Veterinary World
https://www.readbyqxmd.com/read/29914669/increase-serum-cortisol-in-young-guinea-pig-offspring-in-response-to-maternal-iron-deficiency
#13
Nora Shero, Sylvain Fiset, Hélène Plamondon, Mohamed Thabet, France M Rioux
Iron deficiency (ID) has been reported as a risk factor in the pathology of attention-deficit/hyperactivity disorder, although the mechanisms seem unclear. Previous results from our research group showed that guinea pig offspring born from ID dams were significantly more active in the Open Field Test than the controls. This behavior could potentially be associated to stress. We therefore hypothesized that maternal iron deficiency (MID) elevates the offspring serum cortisol, a biomarker of stress, during childhood and possibly at mature age...
June 2018: Nutrition Research
https://www.readbyqxmd.com/read/29914299/elevated-oxidative-dna-damage-in-patients-with-coronary-artery-disease-and-its-association-with-oxidative-stress-biomarkers
#14
M A Bhat, G Gandhi
OBJECTIVE: The objective of the present study was to evaluate oxidative DNA damage in peripheral blood leukocytes (PBLs) of patients with coronary artery disease (CAD) and to explore the relationship of oxidised purine and pyrimidine with oxidative stress. METHODS: The study participants (n = 100) included 50 patients and unrelated 50 age-, sex- and population-subgroup (Jat Sikhs)-matched healthy controls. Oxidative DNA damage using the modified enzymatic comet in PBLs, and malondialdehyde (MDA) levels, total oxidant status (TOS) and total antioxidant status (TAS) in blood serum samples using spectrophotometric methods was determined...
June 18, 2018: Acta Cardiologica
https://www.readbyqxmd.com/read/29913305/an-investigation-of-the-viscoelastic-properties-and-the-actin-cytoskeletal-structure-of-triple-negative-breast-cancer-cells
#15
Jingjie Hu, Yuxiao Zhou, John D Obayemi, Jing Du, Winston O Soboyejo
An improved understanding of the evolution of cell structure and viscoelasticity with cancer malignancy could enable the development of a new generation of biomarkers and methods for cancer diagnosis. Hence, in this study, we present the viscoelastic properties (moduli and viscosities) and the actin cytoskeletal structures of triple negative breast cancer (TNBC) cells with different metastatic potential. These include: MCF-10A normal breast cells (studied as a control); MDA-MB-468 cells (less metastatic TNBC cells), and MDA-MB-231 cells (highly metastatic TNBC cells)...
May 30, 2018: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29913077/higher-exosomal-tau-amyloid-beta-42-and-il-10-are-associated-with-mild-tbis-and-chronic-symptoms-in-military-personnel
#16
Jessica Gill, Maja Mustapic, Ramon Diaz-Arrastia, Rael Lange, Seema Gulyani, Tom Diehl, Vida Motamedi, Nicole Osier, Robert A Stern, Dimitrios Kapogiannis
OBJECTIVE: Identify biomarkers in peripheral blood that relate to chronic post-concussive and behavioural symptoms following traumatic brain injuries (TBIs) to ultimately improve clinical management. RESEARCH DESIGN: We compared military personnel with mild TBIs (mTBIs) (n = 42) to those without TBIs (n = 22) in concentrations of tau, amyloid-beta (Aβ42) and cytokines (tumour necrosis factor alpha (TNFα, interleukin (IL)-6 and -10) in neuronal-derived exosomes from the peripheral blood...
June 18, 2018: Brain Injury: [BI]
https://www.readbyqxmd.com/read/29912924/hemodiafiltration-is-associated-with-reduced-inflammation-oxidative-stress-and-improved-endothelial-risk-profile-compared-to-high-flux-hemodialysis-in-children
#17
Ayşe Ağbaş, Nur Canpolat, Salim Çalışkan, Alev Yılmaz, Hakan Ekmekçi, Mark Mayes, Helen Aitkenhead, Franz Schaefer, Lale Sever, Rukshana Shroff
Randomized trials in adults have shown reduced all-cause and cardiovascular mortality on hemodiafiltration (HDF) compared to high-flux hemodialysis (HD), but the mechanisms leading to improved outcomes are not clear. We studied biomarkers of inflammation, oxidative stress, anti-oxidant capacity and endothelial dysfunction in 22 children (13 female, age 8-15 years). All children received HD for at least 3 months, and were then switched to HDF, keeping all dialysis related parameters and dialysis time constant...
2018: PloS One
https://www.readbyqxmd.com/read/29911494/stress-biomarkers-in-minimally-invasive-and-conventional-colorectal-resections
#18
Jeffrey Netto, Boris Jansen-Winkeln, René Thieme, Jan Eckardt, Yoon Ju Bae, Anja Willenberg, Sabine Huppert, Orestes Lyros, Stefan Niebisch, Friederike Allecke, Nicole Kreuser, Jürgen Kratzsch, Thorsten Kaiser, Uta Ceglarek, Joachim Thiery, Ines Gockel
INTRODUCTION: Any surgical procedure develops a stress situation for the patient, which can modulate the individual outcome. At present, there is only limited information about stress response in colorectal resections by laparoscopic compared to conventional surgery. Therefore, our objectives were the feasibility and the investigation of stress biomarkers including copeptin and steroid hormones before, during and after colorectal surgery. METHODS: Eleven patients underwent minimally invasive and ten patients conventionally open colorectal surgery...
June 17, 2018: Acta Chirurgica Belgica
https://www.readbyqxmd.com/read/29910424/the-effects-of-a-4-week-intensified-training-and-competition-period-on-salivary-hormones-immunoglobulin-a-illness-symptoms-and-mood-state-in-elite-synchronised-swimmers
#19
Amy Tanner, Shannon Day
Given the limited research into the physiological and psychological demands of elite synchronised swimming, the aim of this study was to examine 10 elite female synchronised swimmers and analyse the relationship between training load, stress, illness episodes, and salivary biomarkers during a period of training and competition. Saliva samples were collected before (BASE), during an intensified training camp (CAMP), during an international competition period (COMP), and post competition recovery (REC) for analysis of cortisol, testosterone, and secretory immunoglobulin A (SIgA)...
September 1, 2017: Sports
https://www.readbyqxmd.com/read/29909774/cardiovascular-magnetic-resonance-assessment-of-acute-cardiovascular-effects-of-voluntary-apnoea-in-elite-divers
#20
L Eichhorn, J Doerner, J A Luetkens, J M Lunkenheimer, R C Dolscheid-Pommerich, F Erdfelder, R Fimmers, J Nadal, B Stoffel-Wagner, H H Schild, A Hoeft, B Zur, C P Naehle
BACKGROUND: Prolonged breath holding results in hypoxemia and hypercapnia. Compensatory mechanisms help maintain adequate oxygen supply to hypoxia sensitive organs, but burden the cardiovascular system. The aim was to investigate human compensatory mechanisms and their effects on the cardiovascular system with regard to cardiac function and morphology, blood flow redistribution, serum biomarkers of the adrenergic system and myocardial injury markers following prolonged apnoea. METHODS: Seventeen elite apnoea divers performed maximal breath-hold during cardiovascular magnetic resonance imaging (CMR)...
June 18, 2018: Journal of Cardiovascular Magnetic Resonance
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