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https://www.readbyqxmd.com/read/28550734/pterostilbene-alleviates-polymicrobial-sepsis-induced-liver-injury-possible-role-of-sirt1-signaling
#1
Xiaojing Liu, Xueliang Yang, Lingna Han, Feng Ye, Min Liu, Wanhu Fan, Kai Zhang, Ying Kong, Jian Zhang, Lei Shi, Yunru Chen, Xi Zhang, Shumei Lin
Liver injury occurs frequently during sepsis. Pterostilbene (Pte), a natural dimethylated analog of resveratrol from blueberries, exerts anti-inflammatory and anti-apoptotic effects in various diseases. However, the role of Pte in sepsis-induced liver injury and its underlying mechanisms remain unknown. The current study aimed to evaluate the protective effects of Pte on sepsis-induced liver injury and its potential mechanisms. Sepsis was induced using cecal ligation and puncture (CLP) in C57BL/6 mice. Mice were administered Pte (5, 10, 15mg/kg, i...
May 24, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28550691/gender-sex-and-traumatic-brain-injury-transformative-science-to-optimize-patient-outcomes
#2
Tatyana Mollayeva, Angela Colantonio
This paper presents highlights from a program of research addressing sex and gender among persons with traumatic brain injury (TBI) relevant to the Canadian context. Epidemiological trends based on health administrative data are examined, and their implications for policy and practice are considered. Further, the authors discuss the need to proactively address TBI in marginalized populations and in the workplace, two areas that have not received widespread attention.
2017: Healthcare Quarterly
https://www.readbyqxmd.com/read/28550659/hyperoxia-provokes-a-time-and-dose-dependent-inflammatory-response-in-mechanically-ventilated-mice-irrespective-of-tidal-volumes
#3
Hendrik J F Helmerhorst, Laura R A Schouten, Gerry T M Wagenaar, Nicole P Juffermans, Joris J T H Roelofs, Marcus J Schultz, Evert de Jonge, David J van Westerloo
BACKGROUND: Mechanical ventilation and hyperoxia have the potential to independently promote lung injury and inflammation. Our purpose was to study both time- and dose-dependent effects of supplemental oxygen in an experimental model of mechanically ventilated mice. METHODS: Healthy male C57Bl/6J mice, aged 9-10 weeks, were intraperitoneally anesthetized and randomly assigned to the mechanically ventilated group or the control group. In total, 100 mice were tracheotomized and mechanically ventilated for either 8 or 12 h after allocation to different settings for the applied fractions of inspired oxygen (FiO2, 30, 50, or 90%) and tidal volumes (7...
December 2017: Intensive Care Medicine Experimental
https://www.readbyqxmd.com/read/28550606/renal-injury-in-pediatric-anorexia-nervosa-a-retrospective-study
#4
Chantal Stheneur, Sebastien J Bergeron, Jean-Yves Frappier, Olivier Jamoulle, Danielle Taddeo, Marc Sznajder, Anne-Laure Lapeyraque
PURPOSE: Although primarily a mental health disorder, anorexia nervosa (AN) has many physical consequences. Among them, the consequences on kidney function are often underestimated. We evaluated renal function in adolescent AN inpatients and investigated the correlation between the GFR and intrinsic patient characteristics. METHODS: A single-center retrospective study was conducted on 51 patients hospitalized for the restrictive type of AN in 2013. Data were divided into: (1) medical history of AN; (2) growth parameters and vital signs upon admission; and (3) blood tests...
May 26, 2017: Eating and Weight Disorders: EWD
https://www.readbyqxmd.com/read/28550495/core-curriculum-illustration-acute-traumatic-aortic-injury
#5
Manuel Trevino, Shaked Laks, Noemi Brunner
This is the 34th installment of a series that will highlight one case per publication issue from the bank of cases available online as part of the American Society of Emergency Radiology (ASER) educational resources. Our goal is to generate more interest in and use of our online materials. To view more cases online, please visit the ASER Core Curriculum and Recommendations for Study online at http://www.aseronline.org/curriculum/toc.htm .
May 26, 2017: Emergency Radiology
https://www.readbyqxmd.com/read/28550440/csf-concentrations-of-adipsin-and-adiponectin-in-patients-with-amyotrophic-lateral-sclerosis
#6
Héctor R Martínez, César E Escamilla-Ocañas, Carlos R Camara-Lemarroy, María T González-Garza, Juan M Tenorio-Pedraza, Martín Hernández-Torre
Amyotrophic lateral sclerosis (ALS) is described as a neurodegenerative disorder. However, neuroinflammation and chemokine expression are prominent pathological finding at sites of injury. Adipsin and adiponectin are molecules that are implicated in the pathogenesis of neurodegenerative and neuroimmune disorders. Adipsin and adiponectin concentrations were determined in the CSF of ALS patients and controls and the relationship of these chemokines with clinical severity and disease duration in ALS was determined...
May 26, 2017: Acta Neurologica Belgica
https://www.readbyqxmd.com/read/28550427/the-fifty-highest-cited-papers-in-anterior-cruciate-ligament-injury
#7
Ines Vielgut, Jan Dauwe, Andreas Leithner, Lukas A Holzer
INTRODUCTION: The anterior cruciate ligament (ACL) is one of the most common injured knee ligaments and at the same time, one of the most frequent injuries seen in the sport orthopaedic practice. Due to the clinical relevance of ACL injuries, numerous papers focussing on this topic including biomechanical-, basic science-, clinical- or animal studies, were published. The purpose of this study was to determine the most frequently cited scientific articles which address this subject, establish a ranking of the 50 highest cited papers and analyse them according to their characteristics...
May 27, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28550395/a-critical-role-for-il-21-receptor-signaling-in-the-coxsackievirus-b3-induced-myocarditis
#8
Fan Yang, Xiao-Mou Wei, Wen-Wu Liang, Wen-Hong Mo, Bao-Ping Tan, Hong Wang
To determine whether IL-21 receptor signaling plays a significant role in promoting Tfh cell-mediated cardiac injury in viral myocarditis (VMC), we compared IL-21R-deficient mice for some parameters of VMC. Balb/c and IL-21R(-/-) mice were infected with CVB3. Frequencies of splenic Tfh cells were determined by flow cytometric analysis, and productions of anti-adenine nucleotide translocator (ANT) autoantibodies were detected by enzyme-linked immunosorbent assay. To determine the effects of IL-21R signal on the proliferation of B cells, lymphocytes from spleens of the IL-21R(-/-) and Balb/c mice infected by CVB3 were tagged with carboxyfluorescein succinimidyl ester (CFSE) and then were stimulated with lipopolysaccharides plus IL-21 or anti-IL-21 neutralizing antibody for 3 days...
May 26, 2017: Inflammation
https://www.readbyqxmd.com/read/28550248/cd44-splice-variants-as-potential-players-in%C3%A2-alzheimer-s-disease-pathology
#9
Elhanan Pinner, Yaron Gruper, Micha Ben Zimra, Don Kristt, Moshe Laudon, David Naor, Nava Zisapel
Alzheimer's disease (AD) is a progressive neurodegenerative disorder characterized by cognitive deficits, deposition of amyloid-β (Aβ) plaques, intracellular neurofibrillary tangles, and neuronal cell death. Neuroinflammation is commonly believed to participate in AD pathogenesis. CD44 is an inflammation-related gene encoding a widely-distributed family of alternatively spliced cell surface glycoproteins that have been implicated in inflammation, metastases, and inflammation-linked neuronal injuries. Here we investigated the expression patterns of CD44S (which does not contain any alternative exon) and CD44 splice variants in postmortem hippocampal samples from AD patients and matched non-AD controls...
May 25, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28550240/the-role-of-gst-polymorphism-in-reperfusion-induced-oxidative-stress-inflammatory-responses-and-clinical-complications-after-surgical-and-percutaneous-coronary-intervention
#10
Örs Pintér, Péter Hardi, Tibor Nagy, Balázs Gasz, Viktoria Kovács, Endre Arató, László Sínay, László Lénárd, Gábor Jancsó
BACKGROUND: Patients having coronary artery disease treated by coronary bypass or PCI procedure are exposed to tissue damage because of the phenomenon called reperfusion injury. Reperfusion injury can be characterized/monitored by oxidative stress parameters, inflammatory markers and by post-operative complication rate. OBJECTIVE: Beyond the obvious factors determining its severity (affected myocardial mass, ischaemic time, collateral circulation etc.) we examined the GST enzyme group's most cardio selective member, GSTP1 and its genetic polymorphism if there is any genetically determined preventive effect on the above-mentioned parameters...
May 24, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/28550196/il-6-signaling-regulates-small-intestinal-crypt-homeostasis
#11
Victoria Jeffery, Andrew J Goldson, Jack R Dainty, Marcello Chieppa, Anastasia Sobolewski
Gut homeostasis is a tightly regulated process requiring finely tuned complex interactions between different cell types, growth factors, or cytokines and their receptors. Previous work has implicated a role for IL-6 and mucosal immune cells in intestinal regeneration following injury and in promoting inflammation and cancer. We hypothesized that IL-6 signaling could also modulate crypt homeostasis. Using mouse in vitro crypt organoid and in vivo models, this study first demonstrated that exogenous IL-6 promoted crypt organoid proliferation and increased stem cell numbers through pSTAT3 activation in Paneth cells...
May 26, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28550144/exacerbation-of-oxygen-glucose-deprivation-induced-blood-brain-barrier-disruption-potential-pathogenic-role-of-interleukin-9-in-ischemic-stroke
#12
Sha Tan, Yilong Shan, Yuge Wang, Yinyao Lin, Siyuan Liao, Zhezhi Deng, Li Zhou, Wei Cai, Qin Zeng, Lei Zhang, Bingjun Zhang, Xuejiao Men, Haiyan Li, Xueqiang Hu, Changyou Wu, Lisheng Peng, Zhengqi Lu
Interleukin (IL) -9 exerts a variety of functions in autoimmune diseases. However, its role in ischemic brain injury remains unknown. The present study explored the biological effects of IL-9 in ischemic stroke. We recruited 42 patients newly diagnosed with ischemic stroke and 22 age- and sex-matched healthy controls. The expression levels of IL-9 and percentages of IL-9-producing T cells, including CD3+CD4+IL-9+ and CD3+CD8+IL-9+ cells, were determined in peripheral blood mononuclear cells (PBMCs) obtained from patients and control individuals...
May 26, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28550143/kicked-to-touch-hoodwinked-by-torticollis
#13
Ciaran K Mc Donald, Niall Mc Goldrick, Cliodhna Ni Fhoghlu, Fintan Shannon
A 2-year-old girl presented to the emergency department with a 3-day history of a painful stiff neck after getting a kick to her head from her older brother. Her general practitioner had recently started her on oral antibiotics for otitis media. Plain film imaging of her cervical spine on admission revealed anterior subluxation of C2 on C3 suggestive of bifacetal dislocation. Subsequent CT imaging confirmed malalignment of the upper cervical spine. The patient was admitted and worked up with MRI of the cervical spine which unexpectedly revealed a large 4×2 cm retropharyngeal abscess extending from C1 to C4...
May 26, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28550101/a-novel-experimental-rat-model-of-peripheral-nerve-scarring-reliably-mimicking-post-surgical-complications-and-recurring-adhesions
#14
Angela Lemke, Carina Penzenstadler, James Ferguson, Dominika Lidinsky, Rudolf Hopf, Monika Bradl, Heinz Redl, Susanne Wolbank, Thomas Hausner
Inflammation, fibrosis and perineural adhesions with the surrounding tissue are common pathological processes following nerve injury and surgical interventions on peripheral nerves in human patients. Furthermore, these signs can reoccur following external neurolysis, currently the most common surgical treatment, thus leading to renewed nerve function impairment and chronic pain. To enable a successful evaluation of new therapeutic approaches, it is crucial to use a reproducible animal model that mimics the main clinical symptoms occurring in human patients...
May 26, 2017: Disease Models & Mechanisms
https://www.readbyqxmd.com/read/28550099/viral-delivery-of-c9orf72-hexanucleotide-repeat-expansions-in-mice-lead-to-repeat-length-dependent-neuropathology-and-behavioral-deficits
#15
Saul Herranz-Martin, Jayanth Chandran, Katherine Lewis, Padraig Mulcahy, Adrian Higginbottom, Callum Walker, Isabel Martinez-Pena Y Valenzuela, Ross A Jones, Ian Coldicott, Tommaso Iannitti, Mohammed Akaaboune, Sherif F El-Khamisy, Thomas H Gillingwater, Pamela J Shaw, Mimoun Azzouz
Intronic GGGGCC repeat expansions in C9orf72 are the most common genetic cause of amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD). Two major pathologies stemming from the hexanucleotide RNA expansions (HREs) have been identified in postmortem tissue: intracellular RNA foci and repeat-associated non-ATG dependent (RAN) dipeptides, though it is unclear how these and other hallmarks of disease contribute to the pathophysiology of neuronal injury. Here we generated two novel lines of mice that overexpress either 10 pure or 102 interrupted G4C2 repeats mediated by adeno-associated virus (AAV) and characterized relevant pathology and disease-related behavioral phenotypes...
May 26, 2017: Disease Models & Mechanisms
https://www.readbyqxmd.com/read/28550096/young-people-with-injuries-from-alcohol-drugs-or-violence-show-increased-suicide-risk
#16
Zosia Kmietowicz
No abstract text is available yet for this article.
May 25, 2017: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/28550088/cardiac-telomere-length-in-heart-development-function-and-disease
#17
Scott A Booth, Fadi J Charchar
Telomeres are repetitive nucleoprotein structures at chromosome ends and a decrease in the number of these repeats, known as a reduction in telomere length (TL), triggers cellular senescence and apoptosis. Heart disease, the worldwide leading cause of death, often results from the loss of cardiac cells which could be explained by decreases in TL. Due to the cell-specific regulation of TL, this review focuses on studies that have measured telomeres in heart cells and critically assesses the relationship between cardiac TL and heart function...
May 26, 2017: Physiological Genomics
https://www.readbyqxmd.com/read/28550049/recovery-of-ethanol-induced-akkermansia-muciniphila-depletion-ameliorates-alcoholic-liver-disease
#18
Christoph Grander, Timon E Adolph, Verena Wieser, Patrick Lowe, Laura Wrzosek, Benedek Gyongyosi, Doyle V Ward, Felix Grabherr, Romana R Gerner, Alexandra Pfister, Barbara Enrich, Dragos Ciocan, Sophie Macheiner, Lisa Mayr, Matthias Drach, Patrizia Moser, Alexander R Moschen, Gabriel Perlemuter, Gyongyi Szabo, Anne Marie Cassard, Herbert Tilg
OBJECTIVE: Alcoholic liver disease (ALD) is a global health problem with limited therapeutic options. Intestinal barrier integrity and the microbiota modulate susceptibility to ALD. Akkermansia muciniphila, a Gram-negative intestinal commensal, promotes barrier function partly by enhancing mucus production. The aim of this study was to investigate microbial alterations in ALD and to define the impact of A. muciniphila administration on the course of ALD. DESIGN: The intestinal microbiota was analysed in an unbiased approach by 16S ribosomal DNA (rDNA) sequencing in a Lieber-DeCarli ALD mouse model, and faecal A...
May 26, 2017: Gut
https://www.readbyqxmd.com/read/28549992/thyroid-hormone-treatment-activates-protective-pathways-in-both-in-vivo-and-in-vitro-models-of-neuronal-injury
#19
Jianrong Li, Ines Donangelo, Kiyomi Abe, Oscar Scremin, Sujie Ke, Feng Li, Anna Milanesi, Yan-Yun Liu, Gregory A Brent
Thyroid hormone plays an important role in brain development and adult brain function, and may influence neuronal recovery after Traumatic Brain Injury (TBI). We utilized both animal and cell culture models to determine the effects of thyroid hormone treatment, post TBI or during hypoxia, on genes important for neuronal survival and neurogenesis. We show that TBI in rats is associated with a reduction in serum thyroxine (T4) and triiodothyronine (T3). A single dose of levothyroxine (T4), one hour after injury, increased serum T4 and normalized serum T3 levels...
May 23, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28549968/autophagy-regulated-ampar-subunit-upregulation-in-in-vitro-oxygen-glucose-deprivation-reoxygenation-induced-hippocampal-injury
#20
Li Bao, Rong-Hu Li, Mei Li, Mei-Fang Jin, Gang Li, Xing Han, Yuan-Yuan Yang, Bin Sun, Li-Xiao Xu, Xing Feng
Autophagy has been implicated to mediate experimental cerebral ischemia/ reperfusion-induced neuronal death; the underlying molecular mechanisms, though, are poorly understood. In this study, we investigated the role of autophagy in regulating the expression of AMPAR subunits (GluR1, GluR2, and GluR3) in oxygen glucose deprivation/reperfusion (OGD/R)-mediated injury of hippocampal neurons. Our results showed that, OGD/R-induced hippocampal neuron injury was accompanied by accumulation of autophagosomes and autolysosomes in cytoplasm alongside a dramatic increase in expression of autophagy-related genes, LC3 and Beclin 1 and increased intracellular Ca(2+) levels...
May 23, 2017: Brain Research
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