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https://www.readbyqxmd.com/read/28817466/mitochondrial-dna-in-acute-kidney-injury-chicken-or-egg
#1
Lukas Martin, Christoph Thiemermann
No abstract text is available yet for this article.
August 16, 2017: Shock
https://www.readbyqxmd.com/read/28800037/primary-cilia-deficiency-induces-intracranial-aneurysm
#2
Min Liu, Jizong Zhao, Qian Zhou, Yong Peng, Yu Zhou, Yugang Jiang
BACKGROUND: Intracranial aneurysm (IA) rupture is life-threatening. However, the mechanisms underlying IA initiation, progression, and rupture remain poorly understood. In the present study, we examined the role of primary cilia in IA development. RESULTS: IA was experimentally induced in mice with elastase and angiotensin II treatment. The number of cells with primary cilia was determined in both IA and peri-IA regions. The role of primary cilia in IA development was assessed through knocking out or manipulating the expression of important components of primary cilia...
August 9, 2017: Shock
https://www.readbyqxmd.com/read/28800036/improved-outcomes-of-cardiopulmonary-resuscitation-in-rats-treated-with-vagus-nerve-stimulation-and-its-potential-mechanism
#3
Peng Sun, Jiangang Wang, Shen Zhao, Zhengfei Yang, Ziren Tang, Navami Ravindra, Jennifer Bradley, Joseph P Ornato, Mary Ann Peberdy, Wanchun Tang
Studies have demonstrated that vagus nerve stimulation (VNS) reduces ischemia/reperfusion (I/R) injury. In this study, we investigated the protective effects of VNS in a rat model of cardiopulmonary resuscitation (CPR). We further investigated whether the beneficial effects of VNS were dependent on the alpha 7 nicotinic acetylcholine receptor (α7nAChR). Forty animals were randomized into 4 groups and all underwent CPR (n = 10 each): (1) CPR alone (control); (2) VNS during CPR; (3) α7nAChR antagonist methyllycaconitine citrate (MLA) with VNS; (4) α7nAChR agonist 3-(2, 4-dimethoxybenzylidene) anabaseine (GTS-21) without VNS...
August 9, 2017: Shock
https://www.readbyqxmd.com/read/28800035/the-anti-malarial-drug-artesunate-attenuates-cardiac-injury-in-a-rodent-model-of-myocardial-infarction
#4
Areeg I Khan, Amar Kapoor, Jianmin Che, Lukas Martin, Mara Rogazzo, Thomas Mercier, Laurent Decosterd, Massimo Collino, Christoph Thiemermann
Ischaemic heart disease remains the leading cause of morbidity and mortality in the Western world. Artesunate is the WHO-recommended drug of choice for complicated malaria (with organ failure). The administration of high doses of artesunate is safe in healthy volunteers (up to 8 mg/kg i.v) and patients with severe malaria (2.4 mg/kg i.v). We investigated the effects of artesunate (1 mg/kg) or its active metabolite dihydroartemisinin (DHA; 0.1 mg/kg) in a model of transient myocardial ischaemia/reperfusion (I/R) and evaluated the mechanism of action of the observed cardioprotective effects of artesunate and DHA...
August 9, 2017: Shock
https://www.readbyqxmd.com/read/28796661/fms-like-tyrosine-kinase-3-ligand-attenuates-local-and-systemic-infection-in-a-model-of-post-burn-pneumonia
#5
Gabriel Hundeshagen, Weihua Cui, Lindsay Musgrove, Aaron Cherry, Seung-Jin Lee, Robert A Cox, Tracy Toliver-Kinsky
BACKGROUND: Burn injury induces immunosuppression and promotes infection with opportunistic pathogens. Pneumonia and sepsis are leading causes of post-burn morbidity and mortality. Fms-like tyrosine kinase-3 ligand (Flt3L) improves local and systemic resistance to P. aeruginosa-associated burn wound infection. This study evaluates the effects of post-burn prophylactic Flt3L treatment on local and systemic infection and inflammation in a murine model of pneumonia and sepsis. METHODS: Mice received a severe scald burn, were treated with Flt3L or vehicle (CTR) for 5 days and inoculated trans-nasally with P...
August 7, 2017: Shock
https://www.readbyqxmd.com/read/28786832/norepinephrine-contributes-to-enterocyte-damage-in-septic-shock-patients-a-prospective-cohort-study
#6
Quirine L M Habes, Lisa van Ede, Jelle Gerretsen, Matthijs Kox, Peter Pickkers
OBJECTIVES: In septic patients, both systemic inflammation and splanchnic hypoperfusion may cause enterocyte damage. Catecholamines may exert additional detrimental effects on mesenteric blood flow in these patients, and thereby contribute to this damage. Enterocyte damage itself results in impairment of gut barrier function and consequent translocation of bacteria/toxins. This may contribute to multiple organ failure and death by sustaining or amplifying the systemic inflammatory response...
August 3, 2017: Shock
https://www.readbyqxmd.com/read/28786831/intestinal-and-limb-ischemic-preconditioning-provides-a-combined-protective-effect-in-the-late-phase-but-not-in-the-early-phase-against-intestinal-injury-induced-by-intestinal-ischemia-reperfusion-in-rats
#7
Bo Yang, Ye Chen, Yan-Hong Long, Xin Fan, Ke-Xuan Liu, Xiao-Bin Wang, Jun Zhou
Intestinal ischemia/reperfusion (I/R) injury is associated with high morbidity and mortality. This study aimed to compare the protective efficacy of intestinal ischemic preconditioning (IIPC) and limb ischemic preconditioning (LIPC) against intestinal ischemia/perfusion (I/R) injury and investigate their combined protective effect and the underlying mechanism. Male Sprague-Dawley rats were pretreated with IIPC, LIPC, or IIPC plus LIPC (combined), and intestinal I/R or sham operation was performed. The animals were sacrificed at 2 and 24 h after reperfusion and then blood and tissue samples were harvested for further analyses...
August 3, 2017: Shock
https://www.readbyqxmd.com/read/28786830/inferior-vena-cava-respiratory-variations-a-useful-tool-at-bedside-to-guide-fluid-therapy-in-spontaneously-breathing-patients
#8
Perrine Bortolotti, Delphine Colling, Sebastien Preau
No abstract text is available yet for this article.
August 3, 2017: Shock
https://www.readbyqxmd.com/read/28767544/compensatory-reserve-index-performance-of-a-novel-monitoring-technology-to-identify-the-bleeding-trauma-patient
#9
Michael Johnson, Abdul Alarhayem, Victor Convertino, Robert Carter, Kevin Chung, Ronald Stewart, John Myers, Daniel Dent, Lilian Liao, Ramon Cestero, Susannah Nicholson, Mark Muir, Martin Schwacha, David Wampler, Mark DeRosa, Brian Eastridge
INTRODUCTION: Hemorrhage is one of the most substantial causes of death after traumatic injury. Standard measures, including systolic blood pressure (SBP), are poor surrogate indicators of physiologic compromise until compensatory mechanisms have been overwhelmed. Compensatory Reserve Index (CRI) is a novel monitoring technology with the ability to assess physiologic reserve. We hypothesized CRI would be a better predictor of physiologic compromise secondary to hemorrhage than traditional vital signs...
August 1, 2017: Shock
https://www.readbyqxmd.com/read/28767543/lactate-and-immunosuppression-in-sepsis
#10
Benjamin Nolt, Fei Tu, Xiaohui Wang, Tuanzhu Ha, Randi Winter, David L Williams, Chuanfu Li
Serum lactate levels are traditionally interpreted as a marker of tissue hypoxia and often used clinically as an indicator of severity and outcome of sepsis/septic shock. Interestingly, recent studies involving the effects of tumor-derived lactate suggest that lactate itself may have an immunosuppressive effect in its local environment. This finding adds to the recent advances in immunometabolism that shed light on the importance of metabolism and metabolic intermediates in the regulation of innate immune and inflammatory responses in sepsis...
August 1, 2017: Shock
https://www.readbyqxmd.com/read/28731900/micro-and-macro-circulatory-changes-during-sepsis-and-septic-shock-in-a-rat-model
#11
Tianfeng Hua, Xiaobo Wu, Wei Wang, Hao Li, Jennifer Bradley, Mary Ann Peberdy, Joseph P Ornato, Wanchun Tang
Microcirculation is the motor of sepsis. In the present study, we investigated whether microcirculatory alterations occur prior to changes of systemic hemodynamics in a rat model of cecum ligation and puncture (CLP)-induced sepsis. We further investigated renal microcirculatory changes during sepsis and compared those with buccal microcirculation. Twelve male Sprague-Dawley rats were randomized into a sham control group (n = 6) and a CLP group (n = 6). Perfused microvessel density (PVD) and microvascular flow index (MFI) were evaluated using sidestream dark field (SDF) video microscopy at baseline, 60, 120, 180, 240, 300, and 360 minutes following CLP...
July 20, 2017: Shock
https://www.readbyqxmd.com/read/28727610/the-metabolopathy-of-tissue-injury-hemorrhagic-shock-and-resuscitation-in-a-rat-model
#12
Anne L Slaughter, Geoffrey R Nunns, Angelo D'Alessandro, Anirban Banerjee, Kirk C Hansen, E E Moore, Christopher C Silliman, Travis Nemkov, Hunter B Moore, Miguel Fragoso, Kiara Leasia, Erik D Peltz
INTRODUCTION: The metabolic consequences of trauma induce significant clinical pathology. In this study we evaluate the independent, metabolic contributions of tissue injury (TI) and combined tissue injury and hemorrhagic shock (TI / HS) using MS-metabolomics in a controlled animal model of critical injury. METHODS: Sprague-Dawley rats (n = 14) underwent TI alone or TI / HS, followed by resuscitation with normal saline and shed blood. Plasma was collected (baseline, post-laparotomy, post-HS, post-resuscitation) for Ultra High Pressure Liquid Chromatography (UHPLC) MS-metabolomics...
July 19, 2017: Shock
https://www.readbyqxmd.com/read/28727609/atrial-natriuretic-peptide-a-potential-early-therapy-for-the-prevention-of-multiple-organ-dysfunction-syndrome-following-severe-trauma
#13
Rong-Wei Zhang, Li-Li Liu, Lan-Lan Zeng, Rui-Jie Li, Ye-Hua Shen, Bin Zhang, Zi-Zhuo Liu, Meng-Fei Chen, Sheng-Mao Jiang, Li-Bing Jiang, Xiao-Gang Zhao, Shou-Yin Jiang
Trauma remains a tremendous medical burden partly because of increased expenditure for the management of multiple organ dysfunction syndrome (MODS) developed during hospital stay. The intestinal barrier injury continues to be a second insult resulting in MODS which currently lacks efficient strategies for prevention. Recent studies have uncovered multi-organ protective benefits of atrial natriuretic peptide (ANP) in cardiovascular disease. However, the role of ANP in prevention of MODS following severe trauma has not been understood...
July 19, 2017: Shock
https://www.readbyqxmd.com/read/28727608/evaluation-of-non-invasive-hemoglobin-monitoring-in-trauma-patients-with-low-hemoglobin-levels
#14
Medhat Gamal, Bassant Abdelhamid, Dina Zakaria, Omnia Abd El Dayem, Ashraf Rady, Maher Fawzy, Ahmed Hasanin
OBJECTIVE: Bleeding is a leading cause of death among trauma patients. Delayed assessment of blood hemoglobin level might result in either unnecessary blood transfusion in non-indicated patients or delayed blood transfusion in critically bleeding patients. In this study, we evaluate the precision of non-invasive hemoglobin monitoring in trauma patients with low hemoglobin levels. METHODS: We included trauma patients with low hemoglobin levels (less than 8 g/dL) scheduled for surgical intervention...
July 19, 2017: Shock
https://www.readbyqxmd.com/read/28727607/new-onset-heart-failure-and-mortality-in-hospital-survivors-of-sepsis-related-left-ventricular-dysfunction
#15
Saraschandra Vallabhajosyula, Jacob C Jentzer, Jeffrey B Geske, Mukesh Kumar, Ankit Sakhuja, Akhil Singhal, Joseph T Poterucha, Kianoush Kashani, Joseph G Murphy, Ognjen Gajic, Rahul Kashyap
BACKGROUND: The association between new-onset left ventricular (LV) dysfunction during sepsis with long-term heart failure outcomes is lesser understood. METHODS: Retrospective cohort study of all adult patients with severe sepsis and septic shock between 2007 and 2014 that underwent echocardiography within 72 hours admitted to the intensive care unit. Patients with prior heart failure, LV dysfunction, and structural heart disease were excluded. LV systolic dysfunction was defined as LV ejection fraction <50% and LV diastolic dysfunction as ≥grade II...
July 19, 2017: Shock
https://www.readbyqxmd.com/read/28727606/the-clinical-utility-of-respiratory-variation-in-inferior-vena-cava-diameter-for-predicting-fluid-responsiveness-in-spontaneously-ventilating-patients
#16
Elliot Long, Ed Oakley, Trevor Duke, Franz E Babl
No abstract text is available yet for this article.
July 19, 2017: Shock
https://www.readbyqxmd.com/read/28719490/identification-of-hypotensive-emergency-department-patients-with-cardiogenic-etiologies
#17
Daniel J Henning, Kathleen E Kearney, M Kennedy Hall, Claudius Mahr, Nathan I Shapiro, Graham Nichol
OBJECTIVE: Identify predictors of cardiogenic etiology among Emergency Department (ED) patients with hypotension, and use these predictors to create a clinical tool to discern cardiogenic etiology of hypotension. METHODS: This secondary analysis evaluated a prospective cohort of consecutive patients with hypotension in an urban, academic, tertiary care ED from November 2012 to September 2013. We included adults with hypotension, defined as a new vasopressor requirement, systolic blood pressure (SBP) < 90 mmHg after at least 1L of crystalloid or 2 units packed red blood cells, or SBP < 90 mmHg and fluids withheld due to concern for fluid overload...
July 17, 2017: Shock
https://www.readbyqxmd.com/read/28719489/antithrombin-iii-attenuates-aki-following-acute-severe-pancreatitis
#18
Yiwei Kong, Jianyong Yin, Dongsheng Cheng, Zeyuan Lu, Niansong Wang, Feng Wang, Mingyu Liang
BACKGROUND: Antithrombin III (ATIII), the predominant coagulation factor inhibitor, possesses anti-inflammatory properties and exerts reno-protective effects on renal ischemia-reperfusion injury in animal models. However, the ATIII's protective effects of ATIII on acute kidney injury (AKI) following severe acute pancreatitis (SAP) need to be confirmed. METHODS: We assessed the association between ATIII activities and the incidence of AKI in patients with SAP, and explored therapeutic effects and potential mechanisms of ATIII on kidney injury in sodium taurocholate induced SAP rat model...
July 17, 2017: Shock
https://www.readbyqxmd.com/read/28697004/experimental-models-of-endotheliopathy-impact-of-shock-severity
#19
Nikolaus Hofmann, Johannes Zipperle, Mohammad Jafarmadar, Mostafa Ashmwe, Claudia Keibl, Carina Penzenstadler, Martin Ponschab, Behnaz Jafarmadar, Heinz Redl, Soheyl Bahrami, Herbert Schöchl
BACKGROUND: Hemorrhagic shock (HS) followed by resuscitation is often associated with sympatho-adrenal activation (SAA) and endothelial damage (ED). OBJECTIVE: We aimed to a) evaluate the impact of HS alone on the magnitude of SAA and consecutive ED and b) characterize potential targets for a standardized and reproducible model of HS-induced endotheliopathy in rats. METHODS: Rats were subjected to either a volume controlled HS (40% of total blood volume: v-HS group) or to a lab guided HS (l-HS) targeting base deficit (BD) >5...
July 10, 2017: Shock
https://www.readbyqxmd.com/read/28682946/cerebral-alterations-following-experimental-multiple-trauma-and-hemorrhagic-shock
#20
Nina Vogt, Christiane Herden, Elke Roeb, Martin Roderfeld, Daphne Eschbach, Thorsten Steinfeldt, Hinnerk Wulf, Steffen Ruchholtz, Eberhard Uhl, Karsten Schöller
Multiple trauma (MT) associated with hemorrhagic shock (HS) might lead to cerebral hypoperfusion and brain damage. We investigated cerebral alterations using a new porcine MT/HS model without traumatic brain injury (TBI) and assessed the neuroprotective properties of mild therapeutic hypothermia. Male pigs underwent standardized MT with HS (45% or 50% loss of blood volume) and resuscitation after 90/120 minutes (T90/T120). In additional groups (TH90/TH120) mild hypothermia (33°C) was induced following resuscitation...
July 4, 2017: Shock
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