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https://www.readbyqxmd.com/read/28936716/induction-of-reactive-oxygen-species-an-emerging-approach-for-cancer-therapy
#1
REVIEW
Zhengzhi Zou, Haocai Chang, Haolong Li, Songmao Wang
Reactive oxygen species (ROS), a group of ions and molecules, include hydroxyl radicals (·OH), alkoxyl radicals, superoxide anion (O2·-), singlet oxygen ((1)O2) and hydrogen peroxide (H2O2). Hydroxyl radicals and alkoxyl radicals are extremely and highly reactive species respectively. Endogenous ROS are mainly formed in mitochondrial respiratory chain. Low levels of ROS play important roles in regulating biological functions in mammalian cells. However, excess production of ROS can induce cell death by oxidative damaging effects to intracellular biomacromolecules...
September 21, 2017: Apoptosis: An International Journal on Programmed Cell Death
https://www.readbyqxmd.com/read/28936072/alleviating-stress-response-to-tracheal-extubation-in-neurosurgical-patients-a-comparative-study-of-two-infusion-doses-of-dexmedetomidine
#2
Ankur Luthra, Hemanshu Prabhakar, Girija Prasad Rath
BACKGROUND: Tracheal extubation is almost always associated with increase in sympathoadrenal activity may result in hypertension, tachycardia, and arrhythmias. Attempts have been made to oppose the pressor response by the use of various drugs. Dexmedetomidine decreases norepinephrine which reduces the blood pressure and the heart rate (HR). We hypothesize that the infusion of dexmedetomidine may produce more stable hemodynamics during extubation as compared to boluses. MATERIALS AND METHODS: Ninety adult patients aged 18-65 years, the American Society of Anesthesiologists Grade I-II undergoing intracranial surgeries for various neurologic problem at All India Institute of Medical Sciences were enrolled in this randomized controlled trial...
August 2017: Journal of Neurosciences in Rural Practice
https://www.readbyqxmd.com/read/28935325/tracheal-compression-caused-by-a-hematoma-after-redo-aortic-root-replacement
#3
Tetsuro Uchida, Azumi Hamasaki, Atsushi Yamashita, Ken Nakamura, Jun Hayashi, Mitsuaki Sadahiro
Postoperative tracheal compression caused by hematoma is extremely rare in patients who have undergone cardiovascular operations. A 65-year-old man underwent elective redo aortic root replacement. Hemostasis was controlled with Surgicel packing (Ethicon, Somerville, NJ). After extubation, he had severe respiratory distress. The emergent computed tomographic scan showed severe obstruction of the tracheal bifurcation compressed by a hematoma around the packed Surgicel. During reexploration, a considerable hematoma was removed...
October 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28934984/a-simple-and-rapid-identification-method-for-newly-emerged-porcine-deltacoronavirus-with-loop-mediated-isothermal-amplification
#4
Fanfan Zhang, Yu Ye, Deping Song, Nannan Guo, Qi Peng, Anqi Li, Xingrong Zhou, Yanjun Chen, Min Zhang, Dongyan Huang, Yuxin Tang
BACKGROUND: Porcine Deltacoronavirus (PDCoV) is a newly emerged enteropathogenic coronavirus that causes diarrhea and mortality in neonatal piglets. PDCoV has spread to many countries around the world, leading to significant economic losses in the pork industry. Therefore, a rapid and sensitive method for detection of PDCoV in clinical samples is urgently needed. RESULTS: In this study, we developed a single-tube one-step reverse transcription loop-mediated isothermal amplification (RT-LAMP) assay specific for nucleocapsid gene to diagnose and monitor PDCoV infections...
September 21, 2017: Biological Research
https://www.readbyqxmd.com/read/28934313/characterization-of-pathogenic-enterococcus-cecorum-from-different-poultry-groups-broiler-chickens-layers-turkeys-and-waterfowl
#5
Beata Dolka, Dorota Chrobak-Chmiel, Michał Czopowicz, Piotr Szeleszczuk
Enterococcus cecorum (EC) is known as a commensal in the intestines of mammals and birds. However, it has been described as an emerging pathogen in poultry industry worldwide. The aim of this study was to analyze and compare EC isolated from clinical material collected from poultry groups with different production purposes. The genetic diversity among pathogenic EC in relation to each specific poultry type was examined. In total, 148 isolates from independent infection outbreaks (2011-2016) were used: 76 broiler chickens (CB), 37 broiler breeders (BB), 23 layers (CL), 7 waterfowl (W) and 5 turkey (T) flocks (1 isolate/1 flock)...
2017: PloS One
https://www.readbyqxmd.com/read/28933281/influenza-virus-small-molecule-therapeutics-and-mechanisms-of-antiviral
#6
Julianna Han, Jasmine Perez, Adam Schafer, Han Cheng, Norton Peet, Lijun Rong, Balaji Manicassamy
Influenza viruses cause severe upper respiratory illness in young children and the elderly during seasonal epidemics. Influenza viruses also have the potential to cause pandemics with significant loss of life in all age groups. Although vaccination is one of the most effective methods to protect against seasonal epidemics, seasonal vaccines afford lowered protection against emerging variant strains and no protection against novel strains. Moreover, the efficacy of influenza virus vaccines is considerably lower in the elderly population...
September 20, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28931801/elizabethkingia-meningoseptica-in-a-case-of-biliary-tract-infection-following-liver-transplantation
#7
Hebah M Musalem, Yazan N Honjol, Lin M Tuleimat, Saleh I Al Abbad, Fahad I Alsohaibani
BACKGROUND Elizabethkingia meningoseptica (E. meningoseptica) is an aerobic Gram-negative bacillus known to thrive in moist environments, and is now recognized as a hospital-acquired infection, being found to contaminate hospital equipment, respiratory apparatus, hospital solutions, water, and drainage systems. Nosocomial infection with E. meningoseptica occurs in immunocompromised patients, requires specialized identification methods, and is resistant to conventional antibiotics. We report a case of E. meningoseptica infection arising from a percutaneous transhepatic biliary drainage (PTBD) tube...
September 21, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28931688/a-selective-bottleneck-shapes-the-evolutionary-mutant-spectra-of-enterovirus-a71-during-viral-dissemination-in-humans
#8
Sheng-Wen Huang, Yi-Hui Huang, Huey-Pin Tsai, Pin-Hwa Kuo, Shih-Min Wang, Ching-Chuan Liu, Jen-Ren Wang
RNA viruses accumulate mutations to rapidly adapt to environmental changes. Enterovirus A71 (EV-A71) causes various clinical manifestations with occasional severe neurological complications. However, the mechanism by which EV-A71 evolves within the human body is unclear. Utilizing deep sequencing and haplotype analyses of viruses from various tissues of an autopsy patient, we sought to define the evolutionary pathway by which enterovirus A71 evolves fitness for invading the central nervous system in humans...
September 20, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28931677/structurally-guided-removal-of-deisgylase-biochemical-activity-from-papain-like-protease-originating-from-the-middle-east-respiratory-syndrome-virus
#9
Courtney M Daczkowski, Octavia Goodwin, John V Dzimianski, Jonathan J Farhat, Scott D Pegan
Middle East respiratory syndrome coronavirus (MERS-CoV) is an emerging human pathogen that is the causative agent for Middle East respiratory syndrome (MERS). With MERS outbreaks resulting in over 35% fatalities and now spread to 27 countries, MERS-CoV poses a significant on-going threat to global human health. As part of its viral genome, MERS-CoV encodes for a papain-like protease (PLpro) that has been observed to act as a deubiquitinase and deISGylase to antagonize IFN-I immune pathways. This activity is in addition to its viral polypeptide cleavage function...
September 20, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28930959/outcomes-after-concomitant-traumatic-brain-injury-and-hemorrhagic-shock-a-secondary-analysis-from-the-pragmatic-randomized-optimal-platelets-and-plasma-ratios-trial
#10
Samuel M Galvagno, Erin E Fox, Savitri N Appana, Sarah Baraniuk, Patrick L Bosarge, Eileen M Bulger, Rachel A Callcut, Bryan A Cotton, Michael Goodman, Kenji Inaba, Terence O'Keeffe, Martin A Schreiber, Charles E Wade, Thomas M Scalea, John B Holcomb, Deborah M Stein
BACKGROUND: Often the clinician is faced with a diagnostic and therapeutic dilemma in patients with concomitant traumatic brain injury (TBI) and hemorrhagic shock (HS), as rapid deterioration from either can be fatal. Knowledge about outcomes after concomitant TBI and HS may help prioritize the emergent management of these patients. We hypothesized that patients with concomitant TBI and HS (TBI + HS) had worse outcomes and required more intensive care compared with patients with only one of these injuries...
October 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28930006/fatal-rocky-mountain-spotted-fever-along-the-united-states-mexico-border-2013-2016
#11
Naomi A Drexler, Hayley Yaglom, Mariana Casal, Maria Fierro, Paula Kriner, Brian Murphy, Anne Kjemtrup, Christopher D Paddock
Rocky Mountain spotted fever (RMSF) is an emerging public health concern near the US-Mexico border, where it has resulted in thousands of cases and hundreds of deaths in the past decade. We identified 4 patients who had acquired RMSF in northern Mexico and subsequently died at US healthcare facilities. Two patients sought care in Mexico before being admitted to US-based hospitals. All patients initially had several nonspecific signs and symptoms, including fever, headache, nausea, vomiting, or myalgia, but deteriorated rapidly without receipt of a tetracycline-class antimicrobial drug...
October 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28929958/-screening-of-corynebacterium-diphtheriae-corynebacterium-ulcerans-and-corynebacterium-pseudotuberculosis-in-throat-swab-specimens-of-children-with-upper-respiratory-tract-infections
#12
Zeynep Gökçe Gayretli Aydın, Gönül Tanır, Selin Nar Ötgün, Meral Turan, Türkan Aydın Teke, Ayşe Kaman, Selçuk Kılıç
Although a significant decrease has been reported in the incidence of diphteria in many regions of the world following the routine diphtheria immunization programs, the emergence of new cases indicated that toxigenic strains are still circulating in the community. Diphtheria vaccine does not provide protection against asymptomatic carriage and colonization of non-toxigenic Corynebacterium diphtheriae. It is a known fact that invasive infections may arise from non-toxigenic C.diphtheriae strains that the non-toxigenic strains can become toxigenic strains leading to diphteria...
July 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28928588/patient-with-persistent-low-oxygen-saturation-for-emergency-cesarean-section
#13
Shivali Panwar, Kirti Nath Saxena, Prachi Gaba
A 24-year-old woman with previous undiagnosed congenital methemoglobinemia presented for the emergency cesarean section in view of fetal distress. The patient had a persistent low oxygen saturation on pulse oximetry with normal heart rate and blood pressure. Arterial blood gas values were normal. The patient was asymptomatic and respiratory and cardiovascular system examination was normal. The patient underwent cesarean section under general anesthesia and was shifted to the Intensive Care Unit postoperatively...
July 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28927680/-digital-action-plan-for-asthma-exacerbations-paname
#14
N Beydon, C Delclaux
BACKGROUND: A written action plan (WAP) reduces emergency visits for asthma exacerbations. However, a WAP is underused and often focused on asthma control. The innovation is an AppWeb that includes an expert software aimed at diagnosing the level of severity of asthma exacerbations and delivering a personalized digital action plan (DAP) when patients are in urgent need of medical advice. Symptoms describing the level of severity of asthma exacerbations and the consequent treatments have been established by working groups of the French Respiratory Societies (SPLF and SP2A for adults and children, respectively)...
September 15, 2017: Revue des Maladies Respiratoires
https://www.readbyqxmd.com/read/28927394/laboratory-markers-of-cardiac-and-metabolic-complications-after-generalized-tonic-clonic-seizures
#15
Robert D Nass, Sina Meiling, René P Andrié, Christian E Elger, Rainer Surges
BACKGROUND: Generalized tonic-clonic seizures (GTCS) frequently lead to emergency inpatient referrals. Laboratory blood values are routinely performed on admission to detect underlying causes and metabolic or cardiac complications. Our goal was to assess the nature and frequency of complications occurring in association with GTCS. METHODS: We retrospectively extracted data from emergency protocols and discharge letters of adult patients admitted to the Department of Epileptology between 01/2010 and 06/2015...
September 19, 2017: BMC Neurology
https://www.readbyqxmd.com/read/28927006/emerging-roles-of-heparanase-in-viral-pathogenesis
#16
REVIEW
Neel Thakkar, Tejabhiram Yadavalli, Dinesh Jaishankar, Deepak Shukla
Heparan sulfate (HS) is ubiquitously expressed on mammalian cells. It is a polysaccharide that binds growth factors, cytokines, and chemokines, and thereby controls several important physiological functions. Ironically, many human pathogens including viruses interact with it for adherence to host cells. HS functions can be regulated by selective modifications and/or selective cleavage of the sugar chains from the cell surface. In mammals, heparanase (HPSE) is the only known enzyme capable of regulating HS functions via a selective endoglycosidase activity that cleaves polymeric HS chains at internal sites...
September 18, 2017: Pathogens
https://www.readbyqxmd.com/read/28926159/randomized-controlled-feasibility-trial-of-intranasal-ketamine-compared-to-intranasal-fentanyl-for-analgesia-in-children-with-suspected-extremity-fractures
#17
Stacy L Reynolds, Kathleen K Bryant, Jonathan R Studnek, Melanie Hogg, Connell Dunn, Megan A Templin, Charity G Moore, James R Young, Katherine Rivera Walker, Michael S Runyon
OBJECTIVE: We compared the tolerability and efficacy of intranasal sub-dissociative ketamine to intranasal fentanyl for analgesia of children with acute traumatic pain and investigated the feasibility of a larger non-inferiority trial that could investigate the potential opioid sparing effects of intranasal ketamine. METHODS: This randomized controlled trial compared intranasal ketamine 1 mg/kg to intranasal fentanyl 1.5 μg/kg in children 4-17 years old with acute pain from suspected, isolated extremity fractures presenting to an urban level II pediatric trauma center from December 2015 to November 2016...
September 19, 2017: Academic Emergency Medicine: Official Journal of the Society for Academic Emergency Medicine
https://www.readbyqxmd.com/read/28925655/pleuritic-chest-pain-sorting-through-the-differential-diagnosis
#18
Brian V Reamy, Pamela M Williams, Michael Ryan Odom
Pleuritic chest pain is characterized by sudden and intense sharp, stabbing, or burning pain in the chest when inhaling and exhaling. Pulmonary embolism is the most common serious cause, found in 5% to 21% of patients who present to an emergency department with pleuritic chest pain. A validated clinical decision rule for pulmonary embolism should be employed to guide the use of additional tests such as d-dimer assays, ventilation-perfusion scans, or computed tomography angiography. Myocardial infarction, pericarditis, aortic dissection, pneumonia, and pneumothorax are other serious causes that should be ruled out using history and physical examination, electrocardiography, troponin assays, and chest radiography before another diagnosis is made...
September 1, 2017: American Family Physician
https://www.readbyqxmd.com/read/28925557/analysis-of-multiple-haloarchaeal-genomes-suggests-that-the-quinone-dependent-respiratory-nitric-oxide-reductase-is-an-important-source-of-nitrous-oxide-in-hypersaline-environments
#19
Javier Torregrosa-Crespo, Pedro González-Torres, Vanesa Bautista, Julia M Esclapez, Carmen Pire, Mónica Camacho, María José Bonete, David J Richardson, Nicholas J Watmough, Rosa María Martínez-Espinosa
Microorganisms, including Bacteria and Archaea, play a key role in denitrification, which is the major mechanism by which fixed nitrogen returns to the atmosphere from soil and water. Whilst the enzymology of denitrification is well understood in Bacteria, the details of the last two reactions in this pathway, which catalyse the reduction of nitric oxide (NO) via nitrous oxide (N2 O) to nitrogen (N2 ), are little studied in Archaea, and hardly at all in haloarchaea. This work describes an extensive interspecies analysis of both complete and draft haloarchaeal genomes aimed at identifying the genes that encode respiratory nitric oxide reductases (Nors)...
September 19, 2017: Environmental Microbiology Reports
https://www.readbyqxmd.com/read/28924435/aggressive-posterior-retinopathy-of-prematurity-in-a-premature-male-infant
#20
Jun Zhou, Zheng Liu, Hai-Yan Ying, Tao Liu
A premature male infant was born at 30 weeks' gestation with a birth weight of 1,700 g in a rural hospital. He was diagnosed with respiratory distress syndrome and received continuous positive airway pressure treatment for 26 days. At 26 days after birth, the patient was transferred to our hospital for further evaluation and management. A comprehensive eye examination revealed a stage 3 retinopathy of prematurity (ROP) involving zone 2 in both eyes. The patient was recommended to a provincial-level eye hospital for emergency laser therapy...
May 2017: Case Reports in Ophthalmology
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