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https://www.readbyqxmd.com/read/28433809/biocorona-formation-on-gold-nanoparticles-modulates-human-proximal-tubule-kidney-cell-uptake-cytotoxicity-and-gene-expression
#1
M T Ortega, J E Riviere, K Choi, N A Monteiro-Riviere
Gold nanoparticles (AuNP) adsorb macromolecules to form a protein corona (PC) after systemic delivery, to which the kidney as the primary excretory organ is constantly exposed. The role of the PC on AuNP cell uptake and toxicity was investigated in vitro in human proximal tubule cells (HPTC) using 40 and 80nm branched polyethylenimine (BPEI), lipoic acid (LA) and polyethylene glycol (PEG) coated AuNP with or without (bare) PCs composed of human plasma (HP) or human serum albumin (HSA) for 0.25 to 24h. Time-dependent intracellular uptake, assessed by ICP-MS showed PC modulated cell uptake and cytotoxicity; with bare 40nm BPEI-AuNP showing the greatest responses...
April 19, 2017: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/28433804/crocin-attenuates-hemorrhagic-shock-induced-oxidative-stress-and-organ-injuries-in-rats
#2
Long Yang, Xiujuan Dong
We aimed to evaluate the effect of natural antioxidant crocin in alleviating hemorrhagic shock (HS)-induced organ damages. HS rats were treated with crocin during resuscitation. Mortality at 12h and 24h post resuscitation was documented. HS and resuscitation induced organ injuries, as characterized by elevated wet/dry ratio, quantitative assessment ratio, blood urea nitrogen, creatinine, aspartate aminotransferase and alanine aminotransferase, whereas rats received crocin treatment demonstrated improvements in all the above characteristics...
April 13, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/28433751/elevated-chaperone-proteins-are-a-feature-of-winter-freeze-avoidance-by-larvae-of-the-goldenrod-gall-moth-epiblema-scudderiana
#3
Guijun Zhang, Janet M Storey, Kenneth B Storey
Winter survival for many insect species includes a need to maintain metabolic homeostasis and structural/functional integrity of macromolecules not only over a wide range of cold temperatures but also in response to rapid temperature change. Chaperones are well-known to protect/stabilize protein structure with regard to heat stress but less is known about their potential involvement in long-term protection of the proteome at subzero temperatures. The present study assessed the participation of chaperone proteins in the cold hardiness of larvae of the goldenrod gall moth, Epiblema scudderiana (Clemens) (Lepidoptera, Olethreutidae), monitoring changes in nine proteins over the winter months as well as their responses to laboratory cold acclimation or anoxia exposure...
April 19, 2017: Journal of Insect Physiology
https://www.readbyqxmd.com/read/28433717/response-a-chronic-effects-of-pbde-47-up-regulations-of-hsp60-and-hsp70-expression-in-freshwater-bivalve-anodonta-woodiana
#4
Xichao Xia, Shipeng Xue, Xiying Wang, Qingyuan Zhang, Chuanfeng Huang, Lianghong Guo, Lunguang Yao
Heat shock proteins (HSPs) play an important role in adaption of environmental stress by protein folding, membrane translocation, degradation of misfolded proteins and other regulatory processes. Our previous study showed oxidative stress generated from polybrominated diphenyl ether-47 (PBDE-47) could cause an acute toxicity on freshwater bivalve Anodonta Woodiana, but the effect of chronic toxicity need to be elucidated. In order to further investigate the chronic effect of PBDE-47, clams A. Woodiana were randomly divided into the PBDE-47 treated group administrated with PBDE-47 at a concentration 3...
April 19, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28433579/distinguishing-septic-from-normal-donors-by-detection-of-spla2-iia-from-human-plasma-using-a-microsieve-based-immunoassay
#5
Daniel R Zweitzig, Arjan G Tibbe, Mark J Kopnitsky, Kathleen Cichonski, Leon W M M Terstappen
Bloodstream infections that progress to septic shock are responsible for hundreds of thousands of deaths each year, and are associated with significant healthcare costs. Recent studies have shown that a member of the secreted phospholipase protein family, termed sPLA2-IIA, may play a role during the innate immune response to bacterial infections, and is elevated in the plasma of septic patients. In this report, the feasibility of a simple microsieve-based sPLA2-IIA detection immunoassay was explored. Microsieves containing 5μm pores were covalently coupled with a sPLA2-IIA-specific monoclonal antibody at 0...
April 19, 2017: Journal of Immunological Methods
https://www.readbyqxmd.com/read/28433485/in-hospital-mortality-in-cirrhotic-patients-at-a-tertiary-care-center
#6
R Zubieta-Rodríguez, J Gómez-Correa, R Rodríguez-Amaya, K A Ariza-Mejia, N A Toloza-Cuta
INTRODUCTION: Cirrhosis of the liver is known for its high risk of mortality associated with episodes of acute decompensation. There is an even greater risk in patients that present with acute-on-chronic liver failure. The identification of patients at higher risk for adverse outcomes can aid in making the clinical decisions that will improve the prognosis for these patients. AIMS: To determine in-hospital mortality and evaluate the epidemiologic and clinical characteristics of patients with cirrhosis of the liver seen at a tertiary referral hospital...
April 19, 2017: Revista de Gastroenterología de México
https://www.readbyqxmd.com/read/28433473/sex-difference-in-the-heat-shock-response-to-high-external-load-resistance-training-in-older-humans
#7
Rose Njemini, Louis Nuvagah Forti, Tony Mets, Evelien Van Roie, Walter Coudyzer, Ingo Beyer, Christophe Delecluse, Ivan Bautmans
BACKGROUND: Literature reports on the effects of resistance training on heat shock protein70 (Hsp70) adaptation in older subjects are scarce. Moreover, the optimum training load required to obtain a beneficial adaptation profile is lacking. Therefore, the aim of this study was to determine the effects of resistance training at various external loads on extracellular Hsp70 (eHsp70) resting levels in older humans. METHODS: Fifty-six community-dwelling older (68±5years) volunteers were randomized to 12weeks of resistance training (3×/week) at either high-resistance (HIGH, 8 males, 10 females, 2×10-15 repetitions at 80%1RM), low resistance (LOW, 9 Males, 10 Females, 1×80-100 repetitions at 20%1RM), or mixed low resistance (LOW+, 9 Males, 10 Females, 1×60 repetitions at 20%1RM followed by 1×10-20 repetitions at 40%1RM)...
April 19, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28433042/-alarmins-and-surgical-injury
#8
J Máca, M Peteja
Surgical intervention is an inseparable part of the management of serious surgical disease. However, surgery also presents a potential risk related to the so-called surgical injury causing immune response. When dysregulated the immune activation is able to cause local complications (i.e. wound dehiscence, impaired healing). Systemic decompartmentization of the immunologic disturbance can negatively influence long-term outcomes (i.e. hospital length of stay, mortality). Due to aseptic conditions in the operating room, such an immune activation is almost always of sterile nature...
2017: Rozhledy V Chirurgii: Měsíčník Československé Chirurgické Společnosti
https://www.readbyqxmd.com/read/28432805/pitfalls-in-electrogram-interpretation-subcutaneous-cardioverter-defibrillator-malfunction-in-brugada-syndrome
#9
Giovanni Morani, Bruna Bolzan, Luca Tomasi, Ruggero Tomei, Corrado Vassanelli
A patient with Brugada Syndrome implanted with subcutaneous cardioverter defibrillator (S-ICD) had oversensing episodes treated with S-ICD shocks. Comparable artefacts weren't evocable with S-ICD pocket manipulation. The fluoroscopy excluded S-ICD macroscopic damage. The device extraction revealed undamaged pulse generator and connector, but the lead was inappropriately tunnelled under the sixth rib. Then the S-ICD malfunction was due to lead microscopic damage caused by lead rubbing the rib surface. This article is protected by copyright...
April 22, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28432665/systemic-and-microcirculatory-effects-of-blood-transfusion-in-experimental-hemorrhagic-shock
#10
Gonzalo Ferrara, Vanina S Kanoore Edul, Héctor S Canales, Enrique Martins, Carlos Canullán, Gastón Murias, Mario O Pozo, Juan F Caminos Eguillor, María G Buscetti, Can Ince, Arnaldo Dubin
BACKGROUND: The microvascular reperfusion injury after retransfusion has not been completely characterized. Specifically, the question of heterogeneity among different microvascular beds needs to be addressed. In addition, the identification of anaerobic metabolism is elusive. The venoarterial PCO2 to arteriovenous oxygen content difference ratio (Pv-aCO2/Ca-vO2) might be a surrogate for respiratory quotient, but this has not been validated. Therefore, our goal was to characterize sublingual and intestinal (mucosal and serosal) microvascular injury after blood resuscitation in hemorrhagic shock and its relation with O2 and CO2 metabolism...
December 2017: Intensive Care Medicine Experimental
https://www.readbyqxmd.com/read/28432554/epigallocatechin-gallate-protects-beas-2b-cells-from-lipopolysaccharide-induced-apoptosis-through-upregulation-of-gastrin-releasing-peptide
#11
Peethambaran Divya, Bijesh Puthusseri, Denny Joseph Kollareth Manual, Mohammed Azharuddin Savanur
Gastrin-releasing peptide (GRP) plays a major role in the development and maintenance of lung epithelial cells by promoting cell division, whereas its suppression causes growth arrest and apoptosis. The present study shows that human bronchial epithelial BEAS-2B cells challenged with lipopolysaccharide (LPS), an endotoxin from gram-negative bacteria, downregulated GRP expression and induced apoptosis via upregulation of p53 and active caspase-3, signifying the importance of GRP in lung epithelial cell survival...
April 21, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28432158/risk-score-for-cardiac-surgery-in-active-left-sided-infective-endocarditis
#12
Carmen Olmos, Isidre Vilacosta, Gilbert Habib, Luis Maroto, Cristina Fernández, Javier López, Cristina Sarriá, Erwan Salaun, Salvatore Di Stefano, Manuel Carnero, Sandrine Hubert, Carlos Ferrera, Gabriela Tirado, Afonso Freitas-Ferraz, Carmen Sáez, Javier Cobiella, Juan Bustamante-Munguira, Cristina Sánchez-Enrique, Pablo Elpidio García-Granja, Cecile Lavoute, Benjamin Obadia, David Vivas, Ángela Gutiérrez, José Alberto San Román
OBJECTIVE: To develop and validate a calculator to predict the risk of in-hospital mortality in patients with active infective endocarditis (IE) undergoing cardiac surgery. METHODS: Thousand two hundred and ninety-nine consecutive patients with IE were prospectively recruited (1996-2014) and retrospectively analysed. Left-sided patients who underwent cardiac surgery (n=671) form our study population and were randomised into development (n=424) and validation (n=247) samples...
April 21, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28431991/molecular-mechanisms-of-trauma-induced-acute-kidney-injury-inflammatory-and-metabolic-insights-from-animal-models
#13
David M Burmeister, Belinda I Gómez, Michael A Dubick
Trauma-induced acute kidney injury (AKI), such as after hemorrhagic shock (HS) or burn, remains a significant problem in the intensive care unit and is associated with increased mortality. The pathophysiology that drives AKI post-trauma is multi factorial, and includes both inflammatory and metabolic alterations. Identifying the systemic profile that contributes to AKI is crucial not only for early diagnosis, but also for identifying treatments that improve kidney function and maintaining long-term patient health...
April 18, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28431977/transcriptome-comparison-reveals-insights-into-muscle-response-to-hypoxia-in-blunt-snout-bream-megalobrama-amblycephala
#14
Bo-Xiang Chen, Shao-Kui Yi, Wei-Feng Wang, Yan He, Yan Huang, Ze-Xia Gao, Hong Liu, Wei-Min Wang, Huan-Ling Wang
The economic and biological significance of blunt snout bream (Megalobrama amblycephala) makes this species important to explore the underlying molecular mechanism of hypoxia response. In the present study, we compared the transcriptional responses to serious hypoxia in skeletal muscle among hypoxia tolerant (MT), sensitive (MS) and control (without hypoxia treatment, MC) M. amblycephala obtained according to the time difference of losing balance after hypoxia treatment. A total of 88,200,889 clean reads were generated and assembled into 44,493 unigenes...
April 18, 2017: Gene
https://www.readbyqxmd.com/read/28431930/quantitative-proteomics-reveals-key-proteins-regulated-by-eicosapentaenoic-acid-in-endothelial-activation
#15
Lu Zhang, Kunhong Xiao, Xuyang Zhao, Xiaoli Sun, Jianshu Zhang, Xian Wang, Yi Zhu, Xu Zhang
Eicosapentaenoic acid (EPA), an n-3 polyunsaturated fatty acid (PUFA), has been shown to decrease the risk of atherosclerosis by attenuating endothelial activation. In this study, we used mass spectrometry-based label-free quantitative proteomics to study the protective mechanisms of EPA and to identify key proteins that regulated by EPA in endothelial activation. Arachidonic acid (AA) was used as a control. HUVECs were pretreated with each of the two PUFAs, and then stimulated with TNFα as a model of endothelial activation...
April 18, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28431732/retrograde-pulmonary-embolectomy-for-acute-pulmonary-embolism-a-simplified-technique
#16
Syed T Hussain, John R Bartholomew, Marzia Leacche, Michael Zhen-Yu Tong
Surgical embolectomy in acute pulmonary embolism is usually reserved for patients with massive pulmonary embolism presenting with cardiogenic shock, or for whom thrombolysis is absolutely contraindicated or has failed. Incomplete removal of thrombotic material lodged in the distal pulmonary arterial bed is considered an important cause of persistent pulmonary hypertension. Retrograde pulmonary embolectomy is an adjunct to conventional pulmonary embolectomy, resulting in more complete embolectomy, specifically of material lodged in the distal pulmonary arterial bed...
May 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28431525/membrane-enriched-proteome-changes-and-prion-protein-expression-during-neural-differentiation-and-in-neuroblastoma-cells
#17
J A Macedo, D Schrama, I Duarte, E Tavares, J Renaut, M E Futschik, P M Rodrigues, E P Melo
BACKGROUND: The function of the prion protein, involved in the so-called prion diseases, remains a subject of intense debate and the possibility that it works as a pleiotropic protein through the interaction with multiple membrane proteins is somehow supported by recent reports. Therefore, the use of proteomic and bioinformatics combined to uncover cellular processes occurring together with changes in the expression of the prion protein may provide further insight into the putative pleiotropic role of the prion protein...
April 22, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28431214/interferon-%C3%AE-released-by-activated-cd8-t-lymphocytes-impairs-the-calcium-resorption-potential-of-osteoclasts-in-calcified-human-aortic-valves
#18
Edit Nagy, Yang Lei, Eduardo Martínez-Martínez, Simon C Body, Florian Schlotter, Michael Creager, Alexander Assmann, Kamal Khabbaz, Peter Libby, Göran K Hansson, Elena Aikawa
Calcium content in patients with calcific aortic valve disease (CAVD) correlates with the severity of stenosis. In CAVD, activated T lymphocytes localize with osteoclast regions; however, the functional consequences of this association remain unknown. We hypothesized that CD8(+) T cells modulate calcification in CAVD. Explanted CAVD valves (n = 52) dissected into noncalcified and calcified portions were subjected to mRNA extraction, real-time quantitative PCR, enzyme-linked immunosorbent assay, and immunohistochemical analyses...
April 18, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28430760/resuscitative-endovascular-balloon-occlusion-of-the-aorta-or-resuscitative-thoracotomy-with-aortic-clamping-for-noncompressible-torso-hemorrhage-a-retrospective-nationwide-study
#19
Shotaro Aso, Hiroki Matsui, Kiyohide Fushimi, Hideo Yasunaga
BACKGROUND: Resuscitative endovascular balloon occlusion of the aorta (REBOA) is an emerging treatment for noncompressible torso hemorrhage. It remains unclear if REBOA is superior to resuscitative thoracotomy with aortic cross-clamping (RT) in terms of improving outcomes. This study compared in-hospital outcomes between REBOA and RT in trauma patients with uncontrolled hemorrhagic shock, using data from a national inpatient database in Japan. METHODS: Using the Diagnosis Procedure Combination database, we identified patients who received REBOA or RT within 1 day after admission from July 1, 2010, to March 31, 2014...
May 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28430717/multilateral-functional-alterations-of-human-neutrophils-in-sepsis-from-the-point-of-diagnosis-to-the-seventh-day
#20
Akira Endo, Miko Okamura, Shunsuke Yoshikawa, Yasuhiro Otomo, Tomohiro Morio
Neutrophil functional changes caused by sepsis itself and their time-course variation have not been fully elucidated because previous studies targeted patients who had received therapeutic interventions. We explored the multilateral functions of circulating neutrophils in patients with severe sepsis or septic shock who had not yet undergone interventions, and followed their changes. Patients were treated based on the Surviving Sepsis Campaign Guidelines 2012. Neutrophil functions were evaluated on days 0 (before therapeutic intervention), 3, and 7 in fifty-nine sepsis patients...
April 20, 2017: Shock
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