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https://www.readbyqxmd.com/read/29786600/shock-synthesis-and-characterization-of-titanium-dioxide-with-%C3%AE-pbo-sub-2-sub-structure
#1
Zhen Tan, Pengwan Chen, Qiang Zhou, Jianjun Liu, Xiaofeng Mei, Bi Wang, Naifu Cui
The phase transformation behavior of anatase and rutile titanium dioxide with particle sizes of 60 nm and 150 nm under shock compression have been investigated. To increase the shock pressure and reduce the shock temperature, copper powder and a small amount of paraffin were mixed with the TiO2 powder. The shock recovered samples were characterized by X-ray diffraction, Raman spectroscopy, and transmission electron microscope. The results indicate that both anatase and rutile TiO2 can transform to α-PbO2 phase TiO2 through shock-induced phase transition...
May 22, 2018: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/29785894/developmental-and-molecular-responses-of-buffalo-bubalus-bubalis-cumulus-oocyte-complex-matured-in-vitro-under-heat-shock-conditions
#2
Ashraf El-Sayed, Rehab Nagy, Amal K El-Asheeri, Liala N Eid
SummaryTo investigate the effects of physiologically relevant heat shock during oocyte maturation, buffalo cumulus-oocyte complexes (COCs) were cultured at 38.5°C (control) or were exposed to 39.5°C (T1) or 40.5°C (T2) for the first 6 h of in vitro maturation (IVM), followed by 38.5°C through the next 18 h/IVM and early embryonic development up to the blastocyst stage. Gene expression analysis was performed on selected target genes (HSF-1, HSF-2, HSP-70, HSP-90, BAX, p53, SOD1, COX1, MAPK14) in denuded oocytes and their isolated cumulus cells resulting from control COCs as well as from COCs exposed to a temperature of 39...
May 22, 2018: Zygote: the Biology of Gametes and Early Embryos
https://www.readbyqxmd.com/read/29785654/a-systematic-review-and-meta-analysis-of-the-use-of-resuscitative-endovascular-balloon-occlusion-of-the-aorta-in-the-management-of-major-exsanguination
#3
REVIEW
B L S Borger van der Burg, Thijs T C F van Dongen, J J Morrison, P P A Hedeman Joosten, J J DuBose, T M Hörer, R Hoencamp
BACKGROUND: Circulatory collapse is a leading cause of mortality among traumatic major exsanguination and in ruptured aortic aneurysm patients. Approximately 40% of patients die before hemorrhage control is achieved. Resuscitative endovascular balloon occlusion of the aorta (REBOA) is an adjunct designed to sustain the circulation until definitive surgical or endovascular repair. A systematic review was conducted for the current clinical use of REBOA in patients with hemodynamic instability and to discuss its potential role in improving prehospital and in-hospital outcome...
May 21, 2018: European Journal of Trauma and Emergency Surgery: Official Publication of the European Trauma Society
https://www.readbyqxmd.com/read/29785617/heat-shock-but-not-temperature-is-a-biological-trigger-for-the-exsheathment-of-third-stage-larvae-of-haemonchus-contortus
#4
Kiliana Bekelaar, Tania Waghorn, Michael Tavendale, Catherine McKenzie, Dave Leathwick
Gastrointestinal parasites are an important health issue in grazing ruminants. Understanding the processes involved in the transition from the free living to the parasitic life stage of these nematodes is one avenue to identifying new targets amenable to future intervention. The transition to parasitism is initiated by exsheathment and is triggered by the sudden change in environment after ingestion of the infective larva by the host. Two major changes in environment are the increases in temperature and carbon dioxide (CO2 ) levels...
May 21, 2018: Parasitology Research
https://www.readbyqxmd.com/read/29785454/the-roles-of-arabidopsis-hsfa2-hsfa4a-and-hsfa7a-in-the-heat-shock-response-and-cytosolic-protein-response
#5
Kuan-Fu Lin, Meng-Yu Tsai, Chung-An Lu, Shaw-Jye Wu, Ching-Hui Yeh
Previously, we found that Arabidopsis plants transformed with a construct containing the promoter of Oshsp17.3 from rice fused to the β-glucuronidase gene (GUS), Oshsp17.3Pro::GUS (Oshsp17.3p), showed a GUS signal after heat shock (HS) or azetidine-2-carboxylic acid (AZC) treatment. HS and AZC trigger the heat shock response (HSR) and cytosolic protein response (CPR), respectively, in the cytosol by modulating specific heat shock factor (HSF) activity. Here we further identified that AtHSFA2 (At2g26150), AtHSFA7a (At3g51910), AtHSFB2a (At5g62020), and AtHSFB2b (At4g11660) are HS- and AZC-inducible; AtHSFA4a (At4g18880) is AZC-inducible; and AtHSFA5 (At4g13980) is less AZC- and HS-inducible...
May 21, 2018: Botanical Studies (Taipei, Taiwan)
https://www.readbyqxmd.com/read/29783951/the-transcriptomic-and-proteomic-responses-of-daphnia-pulex-to-changes-in-temperature-and-food-supply-comprise-environment-specific-and-clone-specific-elements
#6
Dörthe Becker, Yann Reydelet, Jacqueline A Lopez, Craig Jackson, John K Colbourne, Susan Hawat, Michael Hippler, Bettina Zeis, Rüdiger J Paul
BACKGROUND: Regulatory adjustments to acute and chronic temperature changes are highly important for aquatic ectotherms because temperature affects their metabolic rate as well as the already low oxygen concentration in water, which can upset their energy balance. This also applies to severe changes in food supply. Thus, we studied on a molecular level (transcriptomics and/or proteomics) the immediate responses to heat stress and starvation and the acclimation to different temperatures in two clonal isolates of the model microcrustacean Daphnia pulex from more or less stressful environments, which showed a higher (clone M) or lower (clone G) tolerance to heat and starvation...
May 21, 2018: BMC Genomics
https://www.readbyqxmd.com/read/29783819/-value-of-urine-soluble-triggering-receptor-expressed-on-myeloid-cells-1-in-the-early-diagnosis-of-sepsis-associated-acute-kidney-injury
#7
Z K Yuan, F Fang, C J Liu, J Li, Y F Chen, F Xu
Objective: To assess the value of urine soluble triggering receptor expressed on myeloid cells-1(sTREM-1) in early diagnosis and prognosis of sepsis associated acute kidney injury (AKI). Methods: This was a case-control study. A total of 62 patients with sepsis during November 2016 to June 2017 were collected, who were divided into non-AKI sepsis ( n= 49) and AKI sepsis ( n= 13) groups according to the serum creatinine (SCr) or urine output, sepsis with shock ( n= 22) and sepsis without shock ( n= 40) groups according to the presence of shock, survival ( n= 47) and death ( n= 15) groups according to the mortality...
May 2, 2018: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/29782390/suspecting-hyperferritinemic-sepsis-in-iron-deficient-population-do-we-need-a-lower-plasma-ferritin-threshold
#8
Swarup Ghosh, Arun K Baranwal, Prateek Bhatia, Karthi Nallasamy
OBJECTIVES: Hyperferritinemia is being suggested to identify patients with sepsis-induced macrophage activation syndrome for early intervention. However, data among iron-deficient children are scarce. This study was planned to explore the biological behavior of plasma ferritin in children from communities with a high frequency of iron deficiency with septic shock and its association with the outcome. DESIGN: Prospective observational study. SETTING: Tertiary care teaching hospital in a low-middle income economy of South Asia...
May 18, 2018: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/29781628/early-life-stress-impairs-contextual-threat-expression-in-female-but-not-male-mice
#9
Gabriela Manzano-Nieves, Mizan Gaillard, Meghan Gallo, Kevin G Bath
Early life stress (ELS) is associated with altered processing of threat signals, and increased lifetime risk of anxiety and affective pathology, disorders that disproportionately affect females. We tested the impact of a limited bedding paradigm of ELS (from P4-11) on contextual threat learning, context memory, footshock sensitivity, and anxietylike behavior, in adult male and female mice. To examine contextual threat learning, mice conditioned by context/footshock association were tested 24 hr later for the context memory...
May 21, 2018: Behavioral Neuroscience
https://www.readbyqxmd.com/read/29779466/a-systematic-review-of-shock-attenuating-componentry-for-lower-limb-amputees
#10
Mitchell Farrar, Emma Thomas
BACKGROUND: Shock-attenuating pylons are commonly fitted to prostheses in order to compensate for the anatomical and biomechanical shock-absorbing features of the lower limb removed upon amputation. However, studies concerning their shock-attenuating capacity are highly variable and, to date, have not yet been reviewed, making them difficult to interpret and apply in clinical practice. OBJECTIVES: To synthesise and appraise the available literature examining the effectiveness of shock-attenuating pylons in attenuating shock upon limb loading compared to rigid pylons among lower limb amputees...
May 1, 2018: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/29779133/heat-stress-induced-renal-damage-in-poultry-and-the-protective-effects-of-hsp60-and-hsp47
#11
Shu Tang, Shuang Zhou, Bin Yin, Jiao Xu, Liangjiao Di, Jinbao Zhang, Endong Bao
The present study investigates the effects of heat stress on the kidney in broilers, based on previous findings which showed that heat stress caused cardiac damage in broilers. Further, the possible renoprotective role of aspirin and the heat shock proteins HSP60 and HSP47 was also investigated. The enzyme levels of urea and uric acid, which are indicators of renal damage, and lactate dehydrogenase, an indicator of oxidative damage, were measured in chickens that were only exposed to heat stress, chickens that were pretreated with aspirin before heat stress, and chickens that were only treated with aspirin...
May 20, 2018: Cell Stress & Chaperones
https://www.readbyqxmd.com/read/29778416/the-use-of-the-shock-index-as-a-predictor-of-active-bleeding-in-trauma-patients
#12
Andrea Campos-Serra, Sandra Montmany-Vioque, Pere Rebasa-Cladera, Heura Llaquet-Bayo, Raquel Gràcia-Roman, Anna Colom-Gordillo, Salvador Navarro-Soto
INTRODUCTION: Vital signs indicate the presence of bleeding only after large amounts of blood have been lost, with high morbidity and mortality. The Shock Index (SI) is a hemorrhage indicator with a cut-off point for the risk of bleeding at 0.9. The aim of this study is to assess whether a cut-off of≥0.8 is more sensitive for detecting occult bleeding, providing for early initiation of therapeutic maneuvers. METHODS: SI analytical validation study of severe trauma patients older than 16 years of age...
May 16, 2018: Cirugía Española
https://www.readbyqxmd.com/read/29777170/systematic-biology-analysis-on-photosynthetic-carbon-metabolism-of-maize-leaf-following-sudden-heat-shock-under-elevated-co-2
#13
Mingnan Qu, Genyun Chen, James A Bunce, Xiaocen Zhu, Richard C Sicher
Plants would experience more complex environments, such as sudden heat shock (SHS) stress combined with elevated CO2 in the future, and might adapt to this stressful condition by optimizing photosynthetic carbon metabolism (PCM). It is interesting to understand whether this acclimation process would be altered in different genotypes of maize under elevated CO2 , and which metabolites represent key indicators reflecting the photosynthetic rates (PN ) following SHS. Although B76 had greater reduction in PN during SHS treatment, our results indicated that PN in genotype B76, displayed faster recovery after SHS treatment under elevated CO2 than in genotype B106...
May 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29776593/heat-shock-influences-the-fatty-acid-composition-of-the-muscle-of-the-antarctic-fish-trematomus-bernacchii
#14
C Truzzi, S Illuminati, M Antonucci, G Scarponi, A Annibaldi
In the Ross Sea region (average temperature of -1.87 °C), shelf water warming up to +0.8-+1.4 °C is predicted by 2200, so there is an urgent need to understand how organisms can respond to rising temperatures. In this study, we analyzed the effect of a heat shock on the fatty acid (FAs) composition of muscle of the Antarctic teleost Trematomus bernacchii, caught in Terra Nova Bay (Ross Sea), and held in fish tanks at 0, +1 or +2 °C, for 1, 5 and 10 days. In general, heat shock produced, beyond a reduction in total lipid content correlated to the temperature, an increase in the percentage of saturated FAs, and a decrease in mono-unsaturated FAs; however, the level of poly-unsaturated FAs did not seem to directly correlate with temperature...
April 3, 2018: Marine Environmental Research
https://www.readbyqxmd.com/read/29776439/concurrence-of-symmetrical-peripheral-gangrene-and-venous-limb-gangrene-following-polytrauma-a-case-report
#15
Jih Huei Tan, Yuzaidi Mohamad, Chor Lip Henry Tan, Mahazir Kassim, Theodore E Warkentin
BACKGROUND: Symmetrical peripheral gangrene is characterized as acral (distal extremity) ischemic limb injury affecting two or more extremities, without large vessel obstruction, typically in a symmetrical fashion. Risk factors include hypotension, disseminated intravascular coagulation, and acute ischemic hepatitis ("shock liver"). In contrast, venous limb gangrene is characterized by acral ischemic injury occurring in a limb with deep vein thrombosis. Both symmetrical peripheral gangrene and venous limb gangrene present as acral limb ischemic necrosis despite presence of arterial pulses...
May 19, 2018: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/29774376/roles-of-heat-shock-factor-1-beyond-the-heat-shock-response
#16
REVIEW
János Barna, Péter Csermely, Tibor Vellai
Various stress factors leading to protein damage induce the activation of an evolutionarily conserved cell protective mechanism, the heat shock response (HSR), to maintain protein homeostasis in virtually all eukaryotic cells. Heat shock factor 1 (HSF1) plays a central role in the HSR. HSF1 was initially known as a transcription factor that upregulates genes encoding heat shock proteins (HSPs), also called molecular chaperones, which assist in refolding or degrading injured intracellular proteins. However, recent accumulating evidence indicates multiple additional functions for HSF1 beyond the activation of HSPs...
May 17, 2018: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/29772090/lcm-seq-reveals-the-crucial-role-of-lssoc1-in-heat-promoted-bolting-of-lettuce-lactuca-sativa-l
#17
Zijing Chen, Wensheng Zhao, Danfeng Ge, Yingyan Han, Kang Ning, Chen Luo, Shenglin Wang, Renyi Liu, Xiaolan Zhang, Qian Wang
Lettuce (Lactuca sativa L.) is one of the most economically important vegetables. The floral transition in lettuce is accelerated under high temperatures, which can significantly decrease yields. However, the molecular mechanism underlying the floral tranition in lettuce is poorly known. Using laser capture microdissection coupled with RNA sequencing, we isolated shoot apical meristem cells from the bolting-sensitive lettuce line S39 at four critical stages of development. Subsequently, we screened specifically for the flowering-related gene LsSOC1 during the floral transition through comparative transcriptomic analysis...
May 17, 2018: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/29771572/inhibition-of-ubiquitin-activating-enzyme-protects-against-organ-injury-after-intestinal-ischemia-reperfusion
#18
Shingo Matsuo, Andrew Chaung, Deanna Liou, Ping Wang, Weng-Lang Yang
Intestinal ischemia-reperfusion (I/R) occurs in various clinical settings, such as transplantation, acute mesenteric arterial occlusion, trauma and shock. I/R injury causes severe systemic inflammation, leading to multiple organ dysfunction associated with high mortality. The ubiquitin proteasome pathway has been indicated in the regulation of inflammation, particularly through NF-κB signaling pathway. PYR-41 is a small molecular compound that selectively inhibits ubiquitin-activating enzyme E1. A mouse model of intestinal I/R injury by clamping the superior mesenteric artery for 45 minutes was performed to evaluate the effect of PYR-41 treatment on organ injury and inflammation...
May 17, 2018: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/29771447/intermedin1-53-protects-cardiac-function-in-rats-with-septic-shock-via-inhibiting-oxidative-stress-and-cardiomyocyte-apoptosis
#19
Y-J Yu, A-H Su, H-B Yang, J-X Chen
OBJECTIVE: To investigate the protective effect of intermedin1-53 (IMD1-53) on cardiac function in rats with septic shock and its underlying mechanism. MATERIALS AND METHODS: Twenty-four male Sprague-Dawley (SD) rats were randomly assigned into three groups, namely the control group (NC group), septic shock group (ET group) and IMD1-53 treatment group (IMD group), with 8 rats in each group. Levels of hemodynamic indicators, blood glucose, lactate acid, CK-MB (creatine kinase-MB) and cTnI (cardiac troponin I) in rats were determined...
May 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29770867/dietary-supplementation-with-an-amino-acid-blend-enhances-intestinal-function-in-piglets
#20
Dan Yi, Baocheng Li, Yongqing Hou, Lei Wang, Di Zhao, Hongbo Chen, Tao Wu, Ying Zhou, Binying Ding, Guoyao Wu
The traditionally classified nutritionally non-essential amino acids are now known to be insufficiently synthesized for maximal growth and optimal health in piglets. This study determined the effects of dietary supplementation with an amino acid blend (AAB; glutamate:glutamine:glycine:arginine:N-acetylcysteine = 5:2:2:1:0.5) on piglet growth performance and intestinal functions. Sixteen piglets (24-day-old) were randomly assigned to a corn and soybean meal-based diet supplemented with 0.99% alanine (isonitrogenous control) or 1% AAB...
May 16, 2018: Amino Acids
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