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https://www.readbyqxmd.com/read/28636994/a-novel-ampk-activator-hernandezine-inhibits-lps-induced-tnf%C3%AE-production
#1
Ping Li, Xiaofang Li, Yonghong Wu, Manxiang Li, Xiaochuang Wang
Here, we found that hernandezine, a novel AMPK activator, inhibited LPS-induced TNFα expression/production in human macrophage cells (THP-1 and U937 lines). Activation of AMPK is required for hernandezine-induced anti-LPS response. AMPKα shRNA or dominant negative mutation (T172A) blocked hernandezine-induced AMPK activation, which almost completely reversed anti-LPS activity by hernandezine. Exogenous expression of the constitutively activate AMPKα (T172D, caAMPKα) also suppressed TNFα production by LPS...
June 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/28636206/retinal-vascular-injuries-and-intravitreal-human-embryonic-stem-cell-derived-haemangioblasts
#2
Jin-Da Wang, Ying An, Jing-Shang Zhang, Xiu-Hua Wan, Wei Zhang, Robert Lanza, Shi-Jiang Lu, Jost B Jonas, Liang Xu
OBJECTIVE: To investigate whether intravitreally applied haemangioblasts (HB) derived from human embryonic stem cells (hESCs) are helpful for the repair of vascular damage caused in animals by an oxygen-induced retinopathy (OIR), by an induced diabetic retinopathy (DR) or by an induced retinal ischaemia with subsequent reperfusion. METHODS: Human embryonic stem cell-derived HBs were transplanted intravitreally into C57BL/6J mice (OIR model), into male Wistar rats with an induced DR and into male Wistar rats undergoing induced retinal ischaemia with subsequent reperfusion...
June 21, 2017: Acta Ophthalmologica
https://www.readbyqxmd.com/read/28635324/gliptins-suppress-inflammatory-macrophage-activation-to-mitigate-inflammation-fibrosis-oxidative-stress-and-vascular-dysfunction-in-models-of-non-alcoholic-steatohepatitis-and-liver-fibrosis
#3
Xiaoyu Wang, Michael Hausding, Shih-Yen Weng, Yong Ook Kim, Sebastian Steven, Thomas Klein, Andreas Daiber, Detlef Schuppan
AIMS: Non-alcoholic steatohepatitis (NASH) is characterized by steatosis, panlobular inflammation, liver fibrosis and increased cardiovascular mortality. Dipeptidyl peptidase-4 (DPP-4) inhibitors (gliptins) are indirect glucagon like peptide 1 (GLP-1) agonists with antidiabetic and anti-inflammatory activity, used for the treatment of type 2 diabetes. Their potential and underlying mechanisms to treat metabolic liver inflammation and fibrosis as well as the associated vascular dysfunction remain to be explored...
June 21, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28634728/aroma-oil-therapy-in-palliative-care-a-pilot-study-with-physiological-parameters-in-conscious-as-well-as-unconscious-patients
#4
Melanie Goepfert, Patrick Liebl, Natalie Herth, Giancarlo Ciarlo, Jens Buentzel, Jutta Huebner
OBJECTIVE: The aim of this pilot study is to analyze the reactions of healthy test persons and conscious as well as unconscious palliative patients to aroma stimuli. PATIENTS AND METHODS: In a randomized controlled study, healthy probands, conscious and unconscious palliative patients were exposed to two essential oils (lemon, lavender). Water was used as the control stimulus. Physiological parameters (breathing rate and heart rate, oxygen saturation, systolic, diastolic and mean arterial pressure) were measured...
June 20, 2017: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/28634587/exercise-metabolism-in-nonobese-patients-with-type-2-diabetes-following-the-acute-restoration-of-normoglycaemia
#5
Christopher J Gaffney, Peter Mansell, Francis B Stephens, Ian A Macdonald, Kostas Tsintzas
This study investigated how acute restoration of normoglycaemia affected energy metabolism during exercise in nonobese patients with type 2 diabetes. Six subjects (mean ± SEM) aged 56.2 ± 2.7 years, with a BMI of 24.5 ± 1.5 kg/m(2) and a VO2 peak of 28.7 ml/kg/min, attended the lab on two randomised occasions for a four-hour resting infusion of insulin or saline, followed by 30 minutes cycling at 50% VO2 peak. During the 4 h resting infusion, there was a greater (P < 0.0001) reduction in blood glucose in insulin treatment (INS) (from 11...
2017: Journal of Diabetes Research
https://www.readbyqxmd.com/read/28634048/activation-volume-vs-bold-signal-change-as-measures-of-fmri-activation-its-impact-on-gaba-fmri-activation-correlation
#6
Pallab K Bhattacharyya, Micheal D Phillips, Lael A Stone, Mark J Lowe
PURPOSE: To explore the relative robustness of functional MRI (fMRI) activation volume and blood oxygen level-dependent (BOLD) signal change as fMRI metric, and to study the effect of relative robustness on the correlation between fMRI activation and cortical gamma amino butyric acid (GABA) in healthy controls and patients with multiple sclerosis (MS). METHODS: fMRI data were acquired from healthy controls and patients with MS, with the subjects peforming self paced bilateral finger tapping in block design...
June 17, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/28634025/impaired-cerebral-autoregulation-in-preoperative-newborn-infants-with-congenital-heart-disease
#7
Jodie K Votava-Smith, Christopher J Statile, Michael D Taylor, Eileen C King, Jesse M Pratt, David P Nelson, Erik C Michelfelder
OBJECTIVES: To characterize cerebral autoregulation (CA) in preoperative newborn infants with congenital heart disease (CHD). METHODS: This was a prospective, pilot study of term newborns with CHD who required intensive care. Continuous mean arterial blood pressure (MAP), cerebral tissue oxygen saturation (SCTO2) via near-infrared spectroscopy, and arterial oxygen saturation (SaO2) were collected. Significant low-frequency coherence between MAP and SCTO2 was used to define impaired CA in 20-minute epochs...
May 23, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28633902/calcium-sensing-receptor-initiating-cystathionine-gamma-lyase-hydrogen-sulfide-pathway-to-inhibit-platelet-activation-in-hyperhomocysteinemia-rat
#8
Yuwen Wang, Ziqing Zhao, Sa Shi, Fei Gao, Jichao Wu, Shiyun Dong, Weihua Zhang, Yanhong Liu, Xin Zhong
Hyperhomocysteinemia (HHcy, high homocysteine) induces the injury of endothelial cells (ECs). Hydrogen sulfide (H2S) protects ECs and inhibits the activation of platelets. Calcium-sensing receptor (CaSR) regulates the production of endogenous H2S. However, whether CaSR inhibits the injury of ECs and the activation of platelets by regulating the endogenous cystathionine-gamma-lyase (CSE, a major enzyme that produces H2S)/H2S pathway in hyperhomocysteinemia has not been previously investigated. Here, we tested the ultrastructure alterations of ECs and platelets, the changes in the concentration of serum homocysteine and the parameters of blood of hyperhomocysteinemia rats were measured...
June 17, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28633728/bilateral-large-pneumothoraxes-following-implantable-cardioverter-defibrillator-generator-change-a-case-report-of-an-uncommon-event-complicating-a-common-procedure
#9
Ritin Bomb, Sunil K Jha
INTRODUCTION: A bilateral large spontaneous pneumothorax to our knowledge has never been reported after a device implantation. We report an unusual case of a patient developing spontaneous bilateral large pneumothoraxes after an implantable cardioverter-defibrillator generator and lead revision without evidence of any obvious traumatic cardiac injury. CASE PRESENTATION: A 79-year-old white man was scheduled for implantable cardioverter-defibrillator generator change and addition of an atrial lead...
2017: Permanente Journal
https://www.readbyqxmd.com/read/28632939/acute-skin-trauma-induces-hyperemia-but-superficial-papillary-nutritive-perfusion-remains-unchanged
#10
Liv Kristin Sundheim, Ane Halse Sporastøyl, Torjus Wester, Göran Salerud, Knut Kvernebo
OBJECTIVES: Superficial skin papillary capillaries with blood supply from a superficial vascular plexus and regulated by local metabolic needs, supply oxygen and nutrient for epithelial cell proliferation. A deep vascular plexus regulated by autonomous nerves serves body thermoregulation. In healthy volunteers we assessed circulatory effects of a standardised skin trauma by computer assisted video m microscopy (CAVM), diffuse reflectance spectroscopy (DRS), and laser Doppler perfusion measurements (LDPM) to assess the measuring depth of the three techniques and to describe the acute trauma effects on nutritive and thermoregulatory perfusion...
June 20, 2017: Microcirculation: the Official Journal of the Microcirculatory Society, Inc
https://www.readbyqxmd.com/read/28632731/cd47-overexpression-is-associated-with-decreased-neutrophil-apoptosis-phagocytosis-and-poor-prognosis-in-non-small-cell-lung-cancer-patients
#11
Lourdes Barrera, Edgar Montes-Servín, Juan-Manuel Hernandez-Martinez, María de Los Ángeles García-Vicente, Elizabeth Montes-Servín, Marytere Herrera-Martínez, José C Crispín, José Rafael Borbolla-Escoboza, Oscar Arrieta
BACKGROUND: Non-small-cell lung cancer (NSCLC) patients often exhibit neutrophilia, which has been associated with poor clinical outcomes. However, the mechanisms that lead to neutrophilia have not been fully established. CD47 is an antiphagocytic molecule that promotes neutrophil recruitment. METHODS: Blood was collected from 50 treatment-naive patients with advanced NSCLC and from 25 healthy subjects. The frequency of CD66b(+) cells and the expression of CD47 were determined by flow cytometry...
June 20, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28632510/itraq-based-quantitative-proteomic-analysis-of-lungs-in-murine-polymicrobial-sepsis-with-hydrogen-gas-treatment
#12
Yingxue Bian, Chao Qin, Yuchang Xin, Yang Yu, Hongguang Chen, Guolin Wang, Keliang Xie, Yonghao Yu
Sepsis-associated acute lung injury (ALI), which carries a high morbidity and mortality in patients, has no effective therapeutic strategies to date. Our group have already reported that hydrogen gas (H2) exerts a protective effect against sepsis in mice. However, the molecular mechanisms underlying H2 treatment are not fully understood. This study investigated the effects of H2 on lung injuries in septic mice through the iTRAQ-based quantitative proteomic analysis. Male ICR mice used in this study were subjected to cecal ligation and puncture (CLP) or sham operation...
June 19, 2017: Shock
https://www.readbyqxmd.com/read/28632497/dha-reduces-oxidative-stress-following-hypoxia-ischemia-in-newborn-piglets-a-study-of-lipid-peroxidation-products-in-urine-and-plasma
#13
Marianne Ullestad Huun, Håvard T Garberg, Javier Escobar, Consuelo Chafer, Maximo Vento, Ingar M Holme, Ola Didrik Saugstad, Rønnaug Solberg
BACKGROUND: Lipid peroxidation mediated by reactive oxygen species is a major contributor to oxidative stress. Docosahexaenoic acid (DHA) has anti-oxidant and neuroprotective properties. Our objective was to assess how oxidative stress measured by lipid peroxidation was modified by DHA in a newborn piglet model of hypoxia-ischemia (HI). METHODS: Fifty-five piglets were randomized to (i) hypoxia, (ii) DHA, (iii) hypothermia, (iv) hypothermia+DHA or (v) sham. All groups but sham were subjected to hypoxia by breathing 8% O2...
June 20, 2017: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/28631453/propofol-dexmedetomidine-versus-propofol-remifentanil-conscious-sedation-for-awake-craniotomy-during-epilepsy-surgery
#14
Abd-Elazeem Elbakry, Ezzeldin Ibrahim
BACKGROUND: Conscious sedation during awake craniotomy requires balanced anaesthesia technique to achieve optimum sedation and analgesia. This technique should be done without causing respiratory depression or loss of consciousness. The present study aims at evaluating the effect of propofol-dexmedetomidine versus propofol-remifentanil conscious sedation during awake craniotomy for epilepsy surgery. METHODS: Sixty patients undergoing awake craniotomy for epilepsy surgery were randomly divided into two groups, PD group and PR group...
June 14, 2017: Minerva Anestesiologica
https://www.readbyqxmd.com/read/28631348/updating-of-working-memory-in-ecstasy-polydrug-users-findings-from-fnirs
#15
Catharine Montgomery, John E Fisk, Carl A Roberts
AIMS/OBJECTIVES: Cognitive deficits are now well documented in ecstasy (MDMA) users with type and relative demand of task emerging as important factors. The updating component of executive processes appears to be particularly affected. The study reported here used functional near infrared spectroscopy imaging to investigate changes in cortical haemodynamics during memory updating. METHOD: Twenty ecstasy users and 20 non-users completed verbal and spatial memory updating tasks and brain blood oxygenation and deoxygenation change was measured using functional near infrared spectroscopy...
June 19, 2017: Human Psychopharmacology
https://www.readbyqxmd.com/read/28630913/an-innovative-biologic-system-for-photon-powered-myocardium-in-the-ischemic-heart
#16
Jeffrey E Cohen, Andrew B Goldstone, Michael J Paulsen, Yasuhiro Shudo, Amanda N Steele, Bryan B Edwards, Jay B Patel, John W MacArthur, Michael S Hopkins, Casey E Burnett, Kevin J Jaatinen, Akshara D Thakore, Justin M Farry, Vi N Truong, Alexandra T Bourdillon, Lyndsay M Stapleton, Anahita Eskandari, Alexander S Fairman, William Hiesinger, Tatiana V Esipova, William L Patrick, Keven Ji, Judith A Shizuru, Y Joseph Woo
Coronary artery disease is one of the most common causes of death and disability, afflicting more than 15 million Americans. Although pharmacological advances and revascularization techniques have decreased mortality, many survivors will eventually succumb to heart failure secondary to the residual microvascular perfusion deficit that remains after revascularization. We present a novel system that rescues the myocardium from acute ischemia, using photosynthesis through intramyocardial delivery of the cyanobacterium Synechococcus elongatus...
June 2017: Science Advances
https://www.readbyqxmd.com/read/28630485/acute-administration-of-catalase-targeted-to-icam-1-attenuates-neuropathology-in-experimental-traumatic-brain-injury
#17
Evan M Lutton, Roshanak Razmpour, Allison M Andrews, Lee Anne Cannella, Young-Jin Son, Vladimir V Shuvaev, Vladimir R Muzykantov, Servio H Ramirez
Traumatic brain injury (TBI) contributes to one third of injury related deaths in the US. Treatment strategies for TBI are supportive, and the pathophysiology is not fully understood. Secondary mechanisms of injury in TBI, such as oxidative stress and inflammation, are points at which intervention may reduce neuropathology. Evidence suggests that reactive oxygen species (ROS) propagate blood-brain barrier (BBB) hyperpermeability and inflammation following TBI. We hypothesized that targeted detoxification of ROS may improve the pathological outcomes of TBI...
June 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28630460/oxidative-and-endoplasmic-reticulum-stress-is-impaired-in-leukocytes-from-metabolically-unhealthy-vs-healthy-obese-individuals
#18
C Bañuls, S Rovira-Llopis, S Lopez-Domenech, N Diaz-Morales, A Blas-Garcia, S Veses, C Morillas, V M Victor, M Rocha, A Hernandez-Mijares
BACKGROUND: Oxidative stress and inflammation are related to obesity, but the influence of metabolic disturbances on these parameters and their relationship with endoplasmic reticulum (ER) stress is unknown. Therefore, this study was performed to evaluate whether metabolic profile influences ER and oxidative stress in an obese population with/without comorbidities. SUBJECTS AND METHODS: A total of 113 obese patients were enrolled in the study; 29 were metabolically healthy (MHO), 53 were metabolically abnormal (MAO), and 31 had type 2 diabetes (MADO)...
June 20, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28630232/long-noncoding-rna-h19-promotes-neuroinflammation-in-ischemic-stroke-by-driving-histone-deacetylase-1-dependent-m1-microglial-polarization
#19
Jue Wang, Haiping Zhao, Zhibin Fan, Guangwen Li, Qingfeng Ma, Zhen Tao, Rongliang Wang, Juan Feng, Yumin Luo
BACKGROUND AND PURPOSE: Long noncoding RNA H19 is repressed after birth, but can be induced by hypoxia. We aim to investigate the impact on and underlying mechanism of H19 induction after ischemic stroke. METHODS: Circulating H19 levels in stroke patients and mice subjected to middle cerebral artery occlusion were assessed using real-time polymerase chain reaction. H19 siRNA and histone deacetylase 1 (HDAC1) plasmid were used to knock down H19 and overexpress HDAC1, respectively...
June 19, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28630012/assessing-passeriforme-health-in-south-texas-via-select-venous-analytes
#20
J Pistone, J J Heatley, T A Campbell, G Voelker
The handheld point of care analyzer is a quick and feasible option to obtain hematology data from individuals. The iSTAT-1® was used to evaluate select venous blood analytes obtained via jugular venipuncture from 238 passerine birds from South Texas. These data were used to assess the health of birds in the area while taking into consideration life history (migratory or sedentary), locale, seasonality, sex, and age. We attributed increased values of pO2 and hematocrit, in addition to hemoglobin and glucose concentrations of migratory birds compared to sedentary birds as the increased need of oxygen carrying capacity and energy for long duration flights...
June 16, 2017: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
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