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sepsis physiology

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https://www.readbyqxmd.com/read/29769380/pneumococcal-metabolic-adaptation-and-colonization-are-regulated-by-the-two-component-regulatory-system-08
#1
Alejandro Gómez-Mejia, Gustavo Gámez, Stephanie Hirschmann, Viktor Kluger, Hermann Rath, Sebastian Böhm, Franziska Voss, Niamatullah Kakar, Lothar Petruschka, Uwe Völker, Reinhold Brückner, Ulrike Mäder, Sven Hammerschmidt
Streptococcus pneumoniae two-component regulatory systems (TCS) enable adaptation and ensure its maintenance in host environments. This study deciphers the impact of TCS08 on pneumococcal gene expression and its role in metabolic and pathophysiological processes. Transcriptome analysis and real-time PCR demonstrated a regulatory effect of TCS08 on genes involved mainly in environmental information processing, intermediary metabolism, and colonization by S. pneumoniae D39 and TIGR4. Striking examples are genes for fatty acid biosynthesis, genes of the arginine deiminase system, and the psa operon encoding the manganese ABC transport system...
June 27, 2018: MSphere
https://www.readbyqxmd.com/read/29762011/strategies-toward-organic-carbon-monoxide-prodrugs
#2
Xingyue Ji, Binghe Wang
Carbon monoxide is widely acknowledged as an important gasotransmitter in the mammalian system with importance on par with that of nitric oxide. It has also been firmly established as a potential therapeutic agent with a wide range of indications including organ transplantation, cancer, bacterial infection, and inflammation-related conditions such as colitis and sepsis. One major issue in developing CO based therapeutics is its delivery in a pharmaceutically acceptable form. Currently, there are generally five forms of deliveries: inhaled CO, photosensitive CO-releasing molecules, encapsulated CO, CO dissolved in drinks, and molecules that would release CO under physiological conditions without the need for light...
May 15, 2018: Accounts of Chemical Research
https://www.readbyqxmd.com/read/29758998/high-levels-of-soluble-triggering-receptor-expressed-on-myeloid-cells-like-transcript-tlt-1-are-associated-with-acute-respiratory-distress-syndrome
#3
Jessica Morales-Ortíz, Matthew T Rondina, Samuel M Brown, Colin Grissom, A Valance Washington
We have previously demonstrated that elevated levels of soluble triggering receptor expressed on myeloid cells-like transcript 1 (sTLT-1) modulate sepsis-induced inflammation and positively correlate with disseminated intravascular coagulation (DIC). Here, we evaluate the clinical implications of plasma sTLT-1 in acute respiratory distress syndrome (ARDS), which is common in sepsis patients. Soluble TLT-1 levels in the plasma of ARDS patients (n = 20) were determined by slot blot analysis and were compared with clinical parameters to identify significant associations...
January 1, 2018: Clinical and Applied Thrombosis/hemostasis
https://www.readbyqxmd.com/read/29756414/arterial-to-end-tidal-carbon-dioxide-tension-difference-co-2-gap-as-a-prognostic-marker-for-adverse-outcomes-in-emergency-department-patients-presenting-with-suspected-sepsis
#4
Amith Shetty, Sebastian Sparenberg, Kristian Adams, Selwyn Selvedran, Benjamin Tang, Kim Hanna, Jonathan Iredell
OBJECTIVE: The arterial to end-tidal carbon dioxide tension difference (CO2 gap) correlates with physiologic dead space. The prognostic value of increased CO2 gap in trauma and respiratory distress patients is documented. Transpulmonary arteriovenous shunting is identified as a predictor of mortality in non-pulmonary sepsis. We set out to investigate the prognostic value of the CO2 gap in a pilot study of patients with suspected sepsis from non-respiratory causes. METHODS: Patients presenting to tertiary Australian ED with suspected sepsis (n = 215) underwent near-simultaneous end-tidal carbon dioxide and partial pressure of carbon dioxide measurements...
May 13, 2018: Emergency Medicine Australasia: EMA
https://www.readbyqxmd.com/read/29755348/the-fibrin-cleavage-product-b%C3%AE-15-42-channels-endothelial-and-tubular-regeneration-in-the-post-acute-course-during-murine-renal-ischemia-reperfusion-injury
#5
Dania Fischer, Christopher Seifen, Patrick Baer, Michaela Jung, Christina Mertens, Bertram Scheller, Kai Zacharowski, Rainer Hofmann, Thorsten J Maier, Anja Urbschat
Early and adequate restoration of endothelial and tubular renal function is a substantial step during regeneration after ischemia reperfusion (IR) injury, occurring, e.g., in kidney transplantation, renal surgery, and sepsis. While tubular epithelial cell injury has long been of central importance, recent perception includes the renal vascular endothelium. In this regard, the fibrin cleavage product fibrinopeptide Bβ15-42 mitigate IR injury by stabilizing interendothelial junctions through its affinity to VE-cadherin...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29743812/nmr-based-plasma-metabolomics-at-set-intervals-in-newborn-dairy-calves-with-severe-sepsis
#6
Abdullah Basoglu, Ismail Sen, Gaia Meoni, Leonardo Tenori, Amir Naseri
The aim of this first study was to reveal the new potential biomarkers by a metabolomics approach in severe septic calves. Sepsis is a common cause of morbidity and mortality in newborn dairy calves. The main challenges with the use of biomarkers of sepsis in domestic animals are their availability, cost, and time required to obtain a result. Metabolomics may offer the potential to identify biomarkers that define calf sepsis in terms of combined clinical, physiological, and pathobiological abnormalities. To our knowledge, this is the first study presenting an NMR- (nuclear magnetic resonance-) based plasma metabolomics at set intervals in neonatal septic calves...
2018: Mediators of Inflammation
https://www.readbyqxmd.com/read/29743761/predictors-of-mortality-in-acute-kidney-injury-patients-admitted-to-medicine-intensive-care-unit-in-a-rural-tertiary-care-hospital
#7
Amrish Saxena, Shrikant V Meshram
Background: Acute kidney injury (AKI) is a challenging problem faced by intensive care clinicians worldwide, and it is associated with high morbidity and mortality, especially in critically ill patients. Materials and Methods: A hospital-based prospective, observational study was conducted in patients of AKI admitted to the Intensive Care Unit (ICU) of the Department of Medicine in a rural tertiary care hospital located in central India. Data of all consecutive AKI inpatients related to demographic variables, clinical profile, and laboratory investigations were collected from patient's medical records...
April 2018: Indian Journal of Critical Care Medicine
https://www.readbyqxmd.com/read/29740793/immune-checkpoint-receptors-homeostatic-regulators-of-immunity
#8
REVIEW
Antonio Riva, Shilpa Chokshi
Alcoholic liver disease (ALD) is an escalating global problem accounting for more than 3 million deaths annually. Bacterial infections are diagnosed in 25-47% of hospitalized patients with cirrhosis and represent the most important trigger for acute decompensation, multi-organ failure, septic shock and death. Current guidelines recommend intensive antibiotic therapy, but this has led to the emergence of multi-drug resistant bacteria, which are associated with increased morbidity and mortality rates. As such, there is a pressing need to explore new paradigms for anti-infective therapy and host-directed immunomodulatory therapies are a promising approach...
May 8, 2018: Hepatology International
https://www.readbyqxmd.com/read/29737106/-predictors-of-long-term-mortality-and-health-related-quality-of-life-for-elderly-patients-with-sepsis
#9
Xing Cao, Xue-Lian Liao, Xiao-Li He, Zhi-Chao Xie, Mei-Zu Lu, Yan Kang
OBJECTIVE: To explore the predictors of long-term mortality and healthy related quality of life (HR-QoL) for elderly patients with sepsis. METHODS: Two hundred and thirty-eight septic patients older than 60 years old admitted to intensive care unit (ICU) were enrolled in the study,and were followed up by telephone interview one year after ICU discharge. The hospital mortality and cumulative one-year mortality were analyzed,single and multiple factors analysis were used to for the risk factors of 1-year mortality...
January 2018: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/29733491/recognition-and-treatment-of-sepsis-in-pregnancy
#10
Anthony M Kendle, Judette Louis
Sepsis that occurs in the context of pregnancy is associated with significant maternal morbidity and mortality. International and multidisciplinary organizations have advocated for expedient diagnosis and initiation of treatment in patients with sepsis. However, the physiologic changes of pregnancy complicate both identification and treatment of maternal sepsis. This article describes a case of a woman presenting with symptoms of sepsis progressing to septic shock. Strategies for identifying and treating women with presumed sepsis are reviewed, and recent data regarding maternal and fetal outcomes are discussed...
May 7, 2018: Journal of Midwifery & Women's Health
https://www.readbyqxmd.com/read/29727369/blue-light-enhances-bacterial-clearance-and-reduces-organ-injury-during-sepsis
#11
Anthony J Lewis, Xianghong Zhang, John E Griepentrog, Du Yuan, Richard D Collage, Paul K Waltz, Derek C Angus, Brian S Zuckerbraun, Matthew R Rosengart
OBJECTIVES: The physiology of nearly all mammalian organisms are entrained by light and exhibit circadian rhythm. The data derived from animal studies show that light influences immunity, and these neurophysiologic pathways are maximally entrained by the blue spectrum. Here, we hypothesize that bright blue light reduces acute kidney injury by comparison with either bright red or standard, white fluorescent light in mice subjected to sepsis. To further translational relevance, we performed a pilot clinical trial of blue light therapy in human subjects with appendicitis...
May 4, 2018: Critical Care Medicine
https://www.readbyqxmd.com/read/29720052/high-density-lipoprotein-mean-platelet-volume-and-uric-acid-as-biomarkers-for-outcomes-in-patients-with-sepsis-an-observational-study
#12
Luis Bolívar Montero-Chacón, Juan Ignacio Padilla-Cuadra, Sy Han Chiou, Gabriel Torrealba-Acosta
BACKGROUND: We conducted an observational study evaluating the association between uric acid, mean platelet volume (MPV), and high-density lipoprotein (HDL) with complications and outcomes of patients with sepsis in a critical care setting. METHODS: We followed patients with a diagnosis of severe sepsis and septic shock for a maximum of 28 days. Main outcomes assessed included length of stay (LOS), the need for renal replacement therapy (RRT), assisted mechanical ventilation (AMV), and vasopressor support as well as in-unit mortality...
January 1, 2018: Journal of Intensive Care Medicine
https://www.readbyqxmd.com/read/29708570/longer-operative-time-is-associated-with-increased-adverse-events-after-anterior-cervical-diskectomy-and-fusion-15-minute-intervals-matter
#13
Nathaniel T Ondeck, Daniel D Bohl, Ryan P McLynn, Jonathan J Cui, Patawut Bovonratwet, Kern Singh, Jonathan N Grauer
Little is known about the impact of operative time, as an independent and interval variable, on general health perioperative outcomes following anterior cervical diskectomy and fusion. Therefore, patients undergoing a 1-level anterior cervical diskectomy and fusion were identified in the American College of Surgeons National Surgical Quality Improvement Program. Operative time (as an interval variable) was tested for association with perioperative outcomes using a multivariate regression that was adjusted for differences in baseline characteristics...
April 27, 2018: Orthopedics
https://www.readbyqxmd.com/read/29706495/effect-of-red-blood-cell-storage-duration-on-outcome-after-paediatric-cardiac-surgery-a-prospective-observational-study
#14
Arvind Kumar Bishnoi, Pankaj Garg, Kartik Patel, Chandrasekaran Ananthanarayanan, Ritesh Shah, Atul Solanki, Himani Pandya, Sanjay Patel
BACKGROUND: Retrospective reviews have found the use of stored packed red blood cells (PRBCs) in priming to be associated with increased risk of postoperative complications. The purpose of study was to prospectively investigate the influence of duration of storage of PRBCs used in priming the cardiopulmonary bypass (CPB) circuit on the metabolic profile of the patients, and postoperative outcome after paediatric cardiac surgery. METHODS: Between January 2015 and December 2015, 198 consecutive children operated for cardiac surgery using CPB and received blood for priming the circuit were included...
March 31, 2018: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/29704446/decreased-protein-c-function-predicts-mortality-in-patients-with-cirrhosis
#15
A G Patil, C Bihari, H D Shewade, N Nigam, S K Sarin
INTRODUCTION: Protein C (PrC), a physiological anticoagulant, regulates inflammation and cell death and has known predictive/therapeutic roles in sepsis. Accumulating evidences suggest plasma hypercoagulability results in progression of fibrosis and formation of microclots causing end-organ dysfunction. We investigated a possible association between natural anticoagulants-PrC, protein S (PrS) and antithrombin III (AT)-and clinical outcomes in cirrhotics. METHODS: Functional PrC, PrS and AT were analysed in 515 cirrhotic patients and compared with 229 noncirrhotics...
April 28, 2018: International Journal of Laboratory Hematology
https://www.readbyqxmd.com/read/29703009/acute-respiratory-failure-requiring-mechanical-ventilation-in-severe-chronic-obstructive-pulmonary-disease-copd
#16
Shruti K Gadre, Abhijit Duggal, Eduardo Mireles-Cabodevila, Sudhir Krishnan, Xiao-Feng Wang, Katrina Zell, Jorge Guzman
There are limited data on the epidemiology of acute respiratory failure necessitating mechanical ventilation in patients with severe chronic obstructive pulmonary disease (COPD). The prognosis of acute respiratory failure requiring invasive mechanical ventilation is believed to be grim in this population. The purpose of this study was to illustrate the epidemiologic characteristics and outcomes of patients with underlying severe COPD requiring mechanical ventilation.A retrospective study of patients admitted to a quaternary referral medical intensive care unit (ICU) between January 2008 and December 2012 with a diagnosis of severe COPD and requiring invasive mechanical ventilation for acute respiratory failure...
April 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29696105/cumulative-positive-fluid-balance-is-a-risk-factor-for-acute-kidney-injury-and-requirement-for-renal-replacement-therapy-after-liver-transplantation
#17
Liana Codes, Ygor Gomes de Souza, Ricardo Azevedo Cruz D'Oliveira, Jorge Luiz Andrade Bastos, Paulo Lisboa Bittencourt
AIM: To analyze whether fluid overload is an independent risk factor of adverse outcomes after liver transplantation (LT). METHODS: One hundred and twenty-one patients submitted to LT were retrospectively evaluated. Data regarding perioperative and postoperative variables previously associated with adverse outcomes after LT were reviewed. Cumulative fluid balance (FB) in the first 12 h and 4 d after surgery were compared with major adverse outcomes after LT. RESULTS: Most of the patients were submitted to a liberal approach of fluid administration with a mean cumulative FB over 5 L and 10 L, respectively, in the first 12 h and 4 d after LT...
April 24, 2018: World Journal of Transplantation
https://www.readbyqxmd.com/read/29691444/adaptive-response-of-neonatal-sepsis-derived-group-b-streptococcus-to-bilirubin
#18
Richard Hansen, Sophie Gibson, Eduardo De Paiva Alves, Mark Goddard, Andrew MacLaren, Anne Marie Karcher, Susan Berry, Elaina S R Collie-Duguid, Emad El-Omar, Mike Munro, Georgina L Hold
Hyperbilirubinemia is so common in newborns as to be termed physiological. The most common bacteria involved in early-onset neonatal sepsis are Streptococcus agalactiae, commonly called Group B Streptococcus (GBS). Whilst previous studies show bilirubin has antioxidant properties and is beneficial in endotoxic shock, little thought has been given to whether bilirubin might have antibacterial properties. In this study, we performed a transcriptomic and proteomic assessment of GBS cultured in the presence/absence of bilirubin...
April 24, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29691397/non-invasive-detection-of-human-cardiomyocyte-death-using-methylation-patterns-of-circulating-dna
#19
Hai Zemmour, David Planer, Judith Magenheim, Joshua Moss, Daniel Neiman, Dan Gilon, Amit Korach, Benjamin Glaser, Ruth Shemer, Giora Landesberg, Yuval Dor
Detection of cardiomyocyte death is crucial for the diagnosis and treatment of heart disease. Here we use comparative methylome analysis to identify genomic loci that are unmethylated specifically in cardiomyocytes, and develop these as biomarkers to quantify cardiomyocyte DNA in circulating cell-free DNA (cfDNA) derived from dying cells. Plasma of healthy individuals contains essentially no cardiomyocyte cfDNA, consistent with minimal cardiac turnover. Patients with acute ST-elevation myocardial infarction show a robust cardiac cfDNA signal that correlates with levels of troponin and creatine phosphokinase (CPK), including the expected elevation-decay dynamics following coronary angioplasty...
April 24, 2018: Nature Communications
https://www.readbyqxmd.com/read/29690950/safety-of-tracheal-intubation-in-the-presence-of-cardiac-disease-in-paediatric-icus
#20
Eleanor A Gradidge, Adnan Bakar, David Tellez, Michael Ruppe, Sarah Tallent, Geoffrey Bird, Natasha Lavin, Anthony Lee, Vinay Nadkarni, Michelle Adu-Darko, Jesse Bain, Katherine Biagas, Aline Branca, Ryan K Breuer, Calvin Brown, Kris Bysani, Guillaume Emeriaud, Sandeep Gangadharan, John S Giuliano, Joy D Howell, Conrad Krawiec, Jan Hau Lee, Simon Li, Keith Meyer, Michael Miksa, Natalie Napolitano, Sholeen Nett, Gabrielle Nuthall, Alberto Orioles, Erin B Owen, Margaret M Parker, Simon Parsons, Lee A Polikoff, Kyle Rehder, Osamu Saito, Ron C Sanders, Asha Shenoi, Dennis W Simon, Peter W Skippen, Keiko Tarquinio, Anne Thompson, Iris Toedt-Pingel, Karen Walson, Akira Nishisaki
IntroductionChildren with CHD and acquired heart disease have unique, high-risk physiology. They may have a higher risk of adverse tracheal-intubation-associated events, as compared with children with non-cardiac disease.Materials and methodsWe sought to evaluate the occurrence of adverse tracheal-intubation-associated events in children with cardiac disease compared to children with non-cardiac disease. A retrospective analysis of tracheal intubations from 38 international paediatric ICUs was performed using the National Emergency Airway Registry for Children (NEAR4KIDS) quality improvement registry...
April 25, 2018: Cardiology in the Young
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