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https://www.readbyqxmd.com/read/28938523/hypothermia-induced-by-anesthesia-regulates-various-signals-expressions-in-the-hippocampus-of-animals
#1
Huimei Hao, Shanshan Wang
Though important for a variety of medical procedures, general anesthesia is not a problem free. Some anesthetics have been suggested to affect a number of signals, which are associated with memory consolidation and cognition. In the present study, we attempted to investigate the molecular mechanism of anesthesia-regulated processes. We found that under hypothermic condition, anesthetic of isoflurane enhances various signals expression in hippocampus, including Hspd1, Actb, Mgst1, THBS4, Syp, C1QC, Serpine, Plat, and Ngf, which were related to cellular stress, neural plasticity responses, and hippocampal injury...
September 18, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28933697/enhanced-skin-regeneration-using-a-novel-amniotic-derived-tissue-graft
#2
Katie C Mowry, Paul P Bonvallet, Susan L Bellis
BACKGROUND: Chronic and recalcitrant wounds present a significant therapeutic challenge. Amniotic tissues contain many regenerative cytokines, growth factors, and extracellular matrix molecules including proteoglycans, hyaluronic acid, and collagens I, III, and IV. Dehydrated amnion/chorion grafts are currently used to treat a variety of wounds such as diabetic foot ulcers and burns. OBJECTIVE: The investigators hypothesized that processing methodologies, dehydration, and hypothermic processing and storage of amniotic tissues would affect overall quality of wound healing; they compared dehydrated amnion/chorion (dHACM) grafts to a novel hypothermically stored amniotic membrane (HSAM) graft in a full-thickness rat wound model...
September 2017: Wounds: a Compendium of Clinical Research and Practice
https://www.readbyqxmd.com/read/28932974/japanese-perspective-in-surgery-for-thoracoabdominal-aortic-aneurysms
#3
Norihiko Shiiya, Naoki Washiyama, Kazumasa Tsuda, Ken Yamanaka, Daisuke Takahashi, Katsushi Yamashita, Kayoko Natsume, Yuki Takeuchi, Suguru Kubota, Yoshiro Matsui
OBJECTIVE: Operative mortality and morbidity after thoracoabdominal aortic surgery remain high. We report our strategy and outcomes, especially those of spinal cord protection. METHODS: Outcomes of 178 patients (age: 26-88 years) who underwent thoracoabdominal aortic replacement were retrospectively analyzed. 65 had aortic dissection, 14 had infected aneurysms, and 22 presented with rupture. Operations were non-elective in 24 and redo through re-thoracotomy in 21...
September 20, 2017: General Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28931055/serum-copeptin-and-neuron-specific-enolase-are-markers-of-neonatal-distress-and-long-term-neurodevelopmental-outcome
#4
Dorottya Kelen, Csilla Andorka, Miklós Szabó, Aleksander Alafuzoff, Kai Kaila, Milla Summanen
The objective of this study was to evaluate the early changes in serial serum levels of copeptin and neuron-specific enolase (NSE) in neonates diagnosed with birth asphyxia, and to determine whether these biomarkers measured in the first 168 hours after birth are predictive of long-term neurodevelopmental outcome. Copeptin and NSE levels were measured from serum samples collected 6, 12, 24, 48, 72, and 168 hours after birth from 75 term neonates diagnosed with hypoxic-ischemic encephalopathy (HIE) and treated with therapeutic hypothermia for 72 hours...
2017: PloS One
https://www.readbyqxmd.com/read/28928357/successful-dual-kidney-transplantation-after-hypothermic-oxygenated-perfusion-of-discarded-human-kidneys
#5
Matteo Ravaioli, Vanessa De Pace, Giorgia Comai, Marco Busutti, Massimo Del Gaudio, Annalisa Amaduzzi, Alessandro Cucchetti, Antonio Siniscalchi, Gaetano La Manna, Antonietta A D D'Errico, Antonio Daniele Pinna
BACKGROUND The recovery of discarded human kidneys has increased in recent years and impels to use of unconventional organ preservation strategies that improve graft function. We report the first case of human kidneys histologically discarded and transplanted after hypothermic oxygenated perfusion (HOPE). CASE REPORT Marginal kidneys from a 78-year-old woman with brain death were declined by Italian transplant centers due to biopsy score (right kidney: 6; left kidney: 7). We recovered and preserved both kidneys through HOPE and we revaluated their use for transplantation by means of perfusion parameters...
September 20, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28925524/hypothermia-increases-aquaporin-4-aqp4-plasma-membrane-abundance-in-human-primary-cortical-astrocytes-via-a-calcium-transient-receptor-potential-vanilloid-4-trpv4-and-calmodulin-mediated-mechanism
#6
Mootaz M Salman, Philip Kitchen, M Nicola Woodroofe, James E Brown, Roslyn M Bill, Alex C Conner, Matthew T Conner
Human aquaporin 4 (AQP4) is the primary water channel protein in brain astrocytes. Hypothermia is known to cause astrocyte swelling in culture, but the precise role of AQP4 in this process is unknown. Primary human cortical astrocytes were cultured under hypothermic (32°C) or normothermic (37°C) conditions. AQP4 transcript, total protein and surface localized protein were quantified using RT-qPCR, sandwich ELISA with whole cell lysates, or cell-surface biotinylation followed by ELISA analysis of the surface-localized protein, respectively...
September 19, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28923649/hypothermic-machine-perfusion-s-protection-on-porcine-kidney-graft-uncovers-greater-akt-erk-phosphorylation
#7
N He, J-H Li, J-J Jia, K-D Xu, Y-F Zhou, L Jiang, H-H Lu, S-Y Yin, H-Y Xie, L Zhou, S-S Zheng
BACKGROUND: To investigate the potential mechanisms of hypothermic machine perfusion (HMP)'s beneficial effects on kidney graft over static cold storage (SCS) in vitro. METHODS: Ten kidneys of 5 Bama miniature male pigs were paired into 2 groups: SCS group and HMP group. Preservation solutions were taken at 0, 1, 3, and 6 hours for the measurement of K(+), Na(+), Cl(-), blood urea nitrogen (BUN), creatinine (Cr), and lactate dehydrogenase (LDH) using the standard laboratory methods...
October 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28923506/straight-deep-hypothermic-circulatory-arrest-for-aortic-arch-surgery-going-the-way-of-the-dinosaurs
#8
EDITORIAL
Nicholas T Kouchoukos
No abstract text is available yet for this article.
August 30, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28923118/hypothermia-for-encephalopathy-in-low-and-middle-income-countries-helix-study-protocol-for-a-randomised-controlled-trial
#9
Sudhin Thayyil, Vania Oliveira, Peter J Lally, Ravi Swamy, Paul Bassett, Mani Chandrasekaran, Jayashree Mondkar, Sundaram Mangalabharathi, Naveen Benkappa, Arasar Seeralar, Mohammod Shahidullah, Paolo Montaldo, Jethro Herberg, Swati Manerkar, Kumutha Kumaraswami, Chinnathambi Kamalaratnam, Vinayagam Prakash, Rema Chandramohan, Prathik Bandya, Mohammod Abdul Mannan, Ranmali Rodrigo, Mohandas Nair, Siddarth Ramji, Seetha Shankaran
BACKGROUND: Therapeutic hypothermia reduces death and disability after moderate or severe neonatal encephalopathy in high-income countries and is used as standard therapy in these settings. However, the safety and efficacy of cooling therapy in low- and middle-income countries (LMICs), where 99% of the disease burden occurs, remains unclear. We will examine whether whole body cooling reduces death or neurodisability at 18-22 months after neonatal encephalopathy, in LMICs. METHODS: We will randomly allocate 408 term or near-term babies (aged ≤ 6 h) with moderate or severe neonatal encephalopathy admitted to public sector neonatal units in LMIC countries (India, Bangladesh or Sri Lanka), to either usual care alone or whole-body cooling with usual care...
September 18, 2017: Trials
https://www.readbyqxmd.com/read/28922301/hypothermic-liver-perfusion
#10
Andrea Schlegel, Xavier Muller, Philipp Dutkowski
PURPOSE OF REVIEW: The review describes recent developments in hypothermic machine liver perfusion with a special focus on underlying protective mechanisms, and the role of this perfusion technique in high-risk donor-recipient combinations. RECENT FINDINGS: To maximize the number of transplantable donor livers, several centres are exploring new machine preservation techniques. In this context, hypothermic machine perfusion has been recently introduced into the clinical setting of human liver transplantation, and the effect of endischemic cold liver perfusion on posttransplant complications is currently under investigation in two multicentre, randomized controlled trials...
September 15, 2017: Current Opinion in Organ Transplantation
https://www.readbyqxmd.com/read/28921534/exploring-cellular-behaviour-under-transient-gene-expression-and-its-impact-on-mab-productivity-and-fc-glycosylation
#11
Si Nga Sou, Ken Lee, Kalpana Nayyar, Karen M Polizzi, Christopher Sellick, Cleo Kontoravdi
Transient gene expression (TGE) is a methodology employed in bioprocessing for the fast provision of recombinant protein material. Mild hypothermia is often introduced to overcome the low yield typically achieved with TGE and improve specific protein productivity. It is therefore of interest to examine the impact of mild hypothermic temperatures on both the yield and quality of transiently-expressed proteins and the relationship to changes in cellular processes and metabolism. In this study, we focus on the ability of a Chinese hamster ovary cell line to galactosylate a recombinant monoclonal antibody (mAb) product...
September 16, 2017: Biotechnology and Bioengineering
https://www.readbyqxmd.com/read/28919515/trace-amine-associated-receptor-1-regulation-of-methamphetamine-induced-neurotoxicity
#12
Nicholas B Miner, Josh S Elmore, Michael H Baumann, Tamara J Phillips, Aaron Janowsky
Trace amine-associated receptor 1 (TAAR1) is activated by methamphetamine (MA) and modulates dopaminergic (DA) function. Although DA dysregulation is the hallmark of MA-induced neurotoxicity leading to behavioral and cognitive deficits, the intermediary role of TAAR1 has yet to be characterized. To investigate TAAR1 regulation of MA-induced neurotoxicity, Taar1 transgenic knock-out (KO) and wildtype (WT) mice were administered saline or a neurotoxic regimen of 4 i.p. injections, 2hr apart, of MA (2.5, 5, or 10mg/kg)...
September 14, 2017: Neurotoxicology
https://www.readbyqxmd.com/read/28917595/perioperative-and-oncologic-outcomes-of-nephrectomy-and-caval-thrombectomy-using-extracorporeal-circulation-and-deep-hypothermic-circulatory-arrest-for-renal-cell-carcinoma-invading-the-supradiaphragmatic-inferior-vena-cava-and-or-right-atrium
#13
Alessandro Nini, Umberto Capitanio, Alessandro Larcher, Paolo Dell'Oglio, Federico Dehò, Nazareno Suardi, Fabio Muttin, Cristina Carenzi, Massimo Freschi, Roberta Lucianò, Giovanni La Croce, Alberto Briganti, Renzo Colombo, Andrea Salonia, Alessandro Castiglioni, Patrizio Rigatti, Francesco Montorsi, Roberto Bertini
BACKGROUND: Radical nephrectomy (RN) and caval thrombectomy (CT) for renal cell carcinoma, with extracorporeal circulation (ECC) and deep hypothermic circulatory arrest (DHCA) is a challenging surgical approach. OBJECTIVE: To assess peri-operative and oncologic outcomes of renal cell carcinoma patients treated with RN and CT, using ECC and DHCA. DESIGN, SETTING, AND PARTICIPANTS: We retrospectively evaluated 46 patients who underwent RN and CT using ECC and DHCA...
September 13, 2017: European Urology
https://www.readbyqxmd.com/read/28914739/hypothermic-neuroprotections-in-the-brain-of-an-echolocation-bat-hipposideros-terasensis
#14
Ching-Lung Lin, Chun-Jen Hsiao, Chih-Hsiang Hsu, Sheue-Er Wang, Philip H-S Jen, Chung-Hsin Wu
The present study aimed to investigate how bats protect their brain in a hypothermic situation. Formosan leaf-nosed bats (Hipposideros terasensis) were used in this study and treated under three conditions: room temperature (25±1°C), low temperature (4±1°C), and hibernation. The reactive oxygen species (ROS) levels in the blood and apoptosis-related proteins in the brain tissue were assessed and then compared among those bats under three conditions. Our results showed that the blood ROS levels of bats treated under conditions of low temperature and hibernation were significantly reduced compared with bats treated under the condition of room temperature...
October 18, 2017: Neuroreport
https://www.readbyqxmd.com/read/28912778/neuroprotective-effects-of-annexin-a1-tripeptide-after-deep-hypothermic-circulatory-arrest-in-rats
#15
Zhiquan Zhang, Qing Ma, Bijal Shah, G Burkhard Mackensen, Donald C Lo, Joseph P Mathew, Mihai V Podgoreanu, Niccolò Terrando
Resolution agonists, including lipid mediators and peptides such as annexin A1 (ANXA1), are providing novel approaches to treat inflammatory conditions. Surgical trauma exerts a significant burden on the immune system that can affect and impair multiple organs. Perioperative cerebral injury after cardiac surgery is associated with significant adverse neurological outcomes such as delirium and postoperative cognitive dysfunction. Using a clinically relevant rat model of cardiopulmonary bypass (CPB) with deep hypothermic circulatory arrest (DHCA), we tested the pro-resolving effects of a novel bioactive ANXA1 tripeptide (ANXA1sp) on neuroinflammation and cognition...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28901483/moderate-hypothermia-induces-protein-sumoylation-in-bone-marrow-stromal-cells-and-enhances-their-tolerance-to-hypoxia
#16
Wenbo Ren, Xiaofang Ma, Xiaozhi Liu, Yanxia Li, Zhongmin Jiang, Yujun Zhao, Chen Li, Xin Li
Acute cerebral infarction can progress rapidly, and there are limited specific and effective treatments. Small ubiquitin‑like modifiers (SUMOs) provide an important post‑translational modification of proteins. Following cerebral infarction, multiple proteins can combine with SUMOs to protect nerve cells. Furthermore, moderate hypothermia (core body temperature, 33‑34˚C) can increase the level of SUMOylation on multiple proteins. In the present study, it was examined whether moderate hypothermia increases the survival rate of bone marrow stromal stem cells (BMSCs) implanted in the cerebral ischemic penumbra via SUMOylation of multiple proteins...
September 5, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28891056/performance-of-the-minto-model-for-the-target-controlled-infusion-of-remifentanil-during-cardiopulmonary-bypass
#17
Y J Cho, W Y Jo, H Oh, C-H Koo, J Oh, J-Y Cho, K-S Yu, Y Jeon, T K Kim
We studied the predictive performance of the Minto pharmacokinetic model during cardiopulmonary bypass in patients undergoing cardiac surgery. Patients received remifentanil target-controlled infusion using the Minto model during total intravenous anaesthesia with propofol. From 56 patients, 275 arterial blood samples were drawn before, during and after bypass to determine the plasma concentration of remifentanil, and the predicted concentrations were recorded at each time. For pooled data, the median prediction error and median absolute prediction error were 21...
October 2017: Anaesthesia
https://www.readbyqxmd.com/read/28887255/forced-air-warming-in-patients-undergoing-endovascular-procedures-comparison-between-two-thermal-blanket-models
#18
Frederico L J Monteiro, Helio Halpern, Fernando Bortoli, Lucia Kataoka, Cristina Marumo, Mariângela Ribeiro, Matheus Castellassi, Cynthia Mendes, Nelson Wolosker
STUDY OBJECTIVE: The purpose of this study was to compare the efficiency between two thermal blanket models: the upper blanket and the underbody blanket in patient heating and hypothermia prevention during endovascular surgery. DESIGN: Prospective randomized study SETTING: Operating room PATIENTS: 50 patients, ASA 2-4 physical status, receiving endovascular surgery repair of infrarenal abdominal aortic aneurysm or lower limb angioplasty by endovascular technique were studied...
September 5, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28885962/cold-acclimation-does-not-alter-physiological-or-perceptual-responses-during-subsequent-exercise-in-the-heat
#19
Douglas M Jones, Kaitlyn A Rostomily, Carina M Pautz, Danica W Ito, Stephen P Bailey, Bart Roelands, Michael J Buono, Romain Meeusen
INTRODUCTION: Warfighters often train and conduct operations in cold environments. Specifically, military trainees and divers that are repeatedly exposed to cold water may experience inadvertent cold acclimatization, which results in body heat retention. These same warfighters can quickly switch between environments (cold to hot or hot to cold) given the nature of their work. This may present a risk of early onset of hyperthermia when cold-acclimatized warfighters are subsequently exposed to physiological insults that increase body temperature, such as exercise and heat stress...
September 2017: Military Medicine
https://www.readbyqxmd.com/read/28882792/hypothermal-stress-induced-differential-expression-profiles-of-the-immune-response-gene-warm-temperature-acclimation-associated-65-kda-protein-wap65-in-the-liver-of-fresh-water-and-seawater-milkfish-chanos-chanos
#20
Chia-Hao Chang, Jing-Yun Lin, Wan-Yu Lo, Tsung-Han Lee
The milkfish (Chanos chanos), an important aquaculture species, is intolerant to cold environments. Temperature fluctuations in the environment affect the physiological response, behavior, and survival rate of the fish. The warm-temperature-acclimation associated 65-kDa protein (Wap65) of teleosts was identified after heat shock treatment and has two isoforms. Both the isoforms were involved in the induction of immune responses in fish. They showed high degree of sequence conservation with the mammalian hemopexin and had high affinity for heme, which helped in the neutralization of free-heme and its transport to the liver...
September 4, 2017: Fish & Shellfish Immunology
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