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https://www.readbyqxmd.com/read/28646487/immunotoxic-effects-of-thymus-in-mice-following-exposure-to-nanoparticulate-tio2
#1
Fashui Hong, Yaoming Zhou, Yingjun Zhou, Ling Wang
Titanium dioxide nanoparticles (TiO2 NPs) have been extensively used in industry, medicine, and daily life, and have shown potential toxic effects for animals or humans. We noted that the effects of TiO2 NPs on the immune system and its mechanism of action in animals or humans have not been elucidated. Thus, mice were exposed to the TiO2 NPs (0, 1.25, 2.5, or 5 mg kg(-1) body weight) for 9 consecutive months. Exposure to TiO2 NPs was accumulated in the thymus, leading to a decrease in body weight and increases in the weight of the thymus or thymus indices...
June 24, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/28635513/evaluation-of-platelet-indices-and-red-cell-distribution-width-as-new-biomarkers-for-the-diagnosis-of-acute-appendicitis
#2
Noha Boshnak, Mohamed Boshnaq, Hatem Elgohary
BACKGROUND: Debate around the value of laboratory tests in establishing the diagnosis of acute appendicitis (AA) still continues. This prospective study aimed to investigate the changes in mean platelet volume (MPV), platelet distribution width (PDW), and red cell distribution width (RDW) with the diagnosis of acute appendicitis. METHOD: 200 patients who underwent emergency appendectomy were included. According to postoperative histology, patients were divided into three groups: acute non-complicated, acute complicated appendicitis (positive appendicectomy groups), and negative appendectomy group...
February 16, 2017: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
https://www.readbyqxmd.com/read/28628214/unconventional-role-of-voltage-gated-proton-channels-vsop-hv1-in-regulation-of-microglial-ros-production
#3
Takafumi Kawai, Yoshifumi Okochi, Tomohiko Ozaki, Yoshio Imura, Schuichi Koizumi, Maya Yamazaki, Manabu Abe, Kenji Sakimura, Toshihide Yamashita, Yasushi Okamura
It has been established that voltage-gated proton channels (VSOP/Hv1), encoded by Hvcn1, support reactive oxygen species (ROS) production in phagocytic activities of neutrophils (El Chemaly et al. 2010) and antibody production in B lymphocytes (Capasso et al. 2010). VSOP/Hv1 is a potential therapeutic target for brain ischemia, since Hvcn1 deficiency reduces microglial ROS production and protects brain from neuronal damage (Wu et al. 2012). In the present study, we report that VSOP/Hv1 has paradoxical suppressive role in ROS production in microglia...
June 19, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28625579/improved-early-detection-of-sepsis-in-the-emergency-department-with-a-novel-monocyte-distribution-width-biomarker
#4
Elliott D Crouser, Joseph E Parrillo, Christopher Seymour, Derek C Angus, Keri Bicking, Liliana Tejidor, Robert Magari, Diana Careaga, JoAnna Williams, Douglas R Closser, Michael Samoszuk, Luke Herren, Emily Robart, Fernando Chaves
BACKGROUND: Sepsis most often presents to the emergency department (ED), and delayed detection is harmful. The white blood count (WBC) is often used to detect sepsis, but changes in WBC size also correspond with sepsis. We sought to determine if volume increases of circulating immune cells adds value to the WBC for early sepsis detection in the ED. METHODS: A blinded, prospective cohort study was conducted in two different ED populations within a large academic hospital...
June 15, 2017: Chest
https://www.readbyqxmd.com/read/28624841/the-neutrophil-to-lymphocyte-ratio-as-a-marker-of-recovery-status-in-patients-with-severe-dental-infection
#5
F Dogruel, Z-B Gonen, D Gunay-Canpolat, G Zararsiz, A Alkan
BACKGROUND: The aim of the study was to assess the value of pretreatment neutrophil/lymphocyte (N/L) ratio and mean platelet volume (MPV) and the correlation between these markers with progression in patients with severe odontogenic infection. MATERIAL AND METHODS: A cohort of 100 patients with severe odontogenic infection were divided into 2 groups according to their length of hospital stay. The N/L ratio and MPV was measured in all patients. The correlation in all patients between preoperative fever, preoperative antibiotic doses, postoperative antibiotic doses, total antibiotic doses and hospital stay with N/L ratio and MPV were analyzed...
June 18, 2017: Medicina Oral, Patología Oral y Cirugía Bucal
https://www.readbyqxmd.com/read/28618975/a-black-cohosh-extract-causes-hematologic-and-biochemical-changes-consistent-with-a-functional-cobalamin-deficiency-in-female-b6c3f1-n-mice
#6
Michelle C Cora, William Gwinn, Ralph Wilson, Debra King, Suramya Waidyanatha, Grace E Kissling, Sukhdev S Brar, Dorian Olivera, Chad Blystone, Greg Travlos
Black cohosh rhizome, available as a dietary supplement, is most commonly marketed as a remedy for dysmenorrhea and menopausal symptoms. A previous subchronic toxicity study of black cohosh dried ethanolic extract (BCE) in female mice revealed a dose-dependent ineffective erythropoiesis with a macrocytosis consistent with the condition known as megaloblastic anemia. The purpose of this study was to investigate potential mechanisms by which BCE induces these particular hematological changes. B6C3F1/N female mice (32/group) were exposed by gavage to vehicle or 1,000 mg/kg BCE for 92 days...
January 1, 2017: Toxicologic Pathology
https://www.readbyqxmd.com/read/28618180/neutrophil-lymphocyte-ratio-and-a-dosimetric-factor-for-predicting-symptomatic-radiation-pneumonitis-in-non-small-cell-lung-cancer-patients-treated-with-concurrent-chemoradiotherapy
#7
Yun Hee Lee, Hoon-Sik Choi, Hojin Jeong, Ki Mun Kang, Jin Ho Song, Won Sup Lee, Gyeong-Won Lee, Haa-Na Song, Hoon-Gu Kim, Myoung Hee Kang, Dong Yoon Rhee, Bae Kwon Jeong
OBJECTIVES: To identify the factors that predict the progression of radiological radiation pneumonitis (RP) to symptomatic RP, and to evaluate the usefulness of the neutrophil-lymphocyte ratio (NLR) as a marker of RP severity and prognosis in stage III non-small cell lung cancer (NSCLC) patients treated with definitive concurrent chemoradiotherapy (CCRT). MATERIALS AND METHODS: We retrospectively reviewed 61 patients treated between January 2010 and December 2015...
June 15, 2017: Clinical Respiratory Journal
https://www.readbyqxmd.com/read/28614141/role-of-hemorrhagic-shock-in-experimental-polytrauma
#8
Stephanie Denk, Sebastian Weckbach, Philipp Eisele, Christian K Braun, Rebecca Wiegner, Julia J Ohmann, Lisa Wrba, Felix M Hoenes, Philipp Kellermann, Peter Radermacher, Ulrich Wachter, Sebastian Hafner, Oscar McCook, Anke Schultze, Annette Palmer, Sonja Braumüller, Florian Gebhard, Markus Huber-Lang
Hemorrhagic shock (HS) after tissue trauma increases the complication and mortality rate of polytrauma (PT) patients. Although several murine trauma models have been introduced, there is a lack of knowledge about the exact impact of an additional HS. We hypothesized that HS significantly contributes to organ injury, which can be reliably monitored by detection of specific organ damage markers.Therefore we established a novel clinically relevant PT plus HS model in C57BL/6 mice which were randomly assigned to control, HS, PT or PT+HS procedure (n = 8 per group)...
June 13, 2017: Shock
https://www.readbyqxmd.com/read/28607467/changes-in-novel-haematological-parameters-following-thermal-injury-a-prospective-observational-cohort-study
#9
R J Dinsdale, A Devi, P Hampson, C M Wearn, A L Bamford, J Hazeldine, J Bishop, S Ahmed, C Watson, J M Lord, N Moiemen, P Harrison
The mortality caused by sepsis is high following thermal injury. Diagnosis is difficult due to the ongoing systemic inflammatory response. Previous studies suggest that cellular parameters may show promise as diagnostic markers of sepsis. The aim of this study was to evaluate the effect of thermal injury on novel haematological parameters and to study their association with clinical outcomes. Haematological analysis was performed using a Sysmex XN-1000 analyser on blood samples acquired on the day of the thermal injury to 12 months post-injury in 39 patients (15-95% TBSA)...
June 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28593413/effect-of-ulinastatin-on-postoperative-renal-function-in-patients-undergoing-robot-assisted-laparoscopic-partial-nephrectomy-a-randomized-trial
#10
Bora Lee, Sook Young Lee, Na Young Kim, Koon Ho Rha, Young Deuk Choi, Sujung Park, So Yeon Kim
BACKGROUND: Robot-assisted laparoscopic partial nephrectomy (RLPN) is an emerging technique for treating small renal masses. Although RLPN has many advantages, ischemic kidney injury is inevitable during renal artery clamping. The overall incidence of acute kidney injury (AKI) after partial nephrectomy has been reported to be up to 39%. Moreover, effective pharmacological protection against AKI after partial nephrectomy has not yet been demonstrated. Ulinastatin has been shown to protect the kidney from ischemia/reperfusion injury via its anti-inflammatory and anti-oxidant activities...
June 7, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28589262/the-surgical-outcomes-of-lung-cancer-combined-with-interstitial-pneumonia-a-single-institution-report
#11
Daisuke Taniguchi, Naoya Yamasaki, Takuro Miyazaki, Tomoshi Tsuchiya, Keitaro Matsumoto, Go Hatachi, Tomoyuki Kakugawa, Noriho Sakamoto, Hiroshi Mukae, Takeshi Nagayasu
PURPOSE: Several studies have reported that an acute exacerbation (AE) of idiopathic interstitial pneumonia (IIP) can occur after lung resection in patients with non-small cell lung cancer (NSCLC); however, the perioperative management strategy is controversial. METHODS: The data of lung cancer patients at Nagasaki University Hospital from June 1994 to October 2013 were retrospectively reviewed. RESULTS: Among all 1701 NSCLC patients who underwent lung resection, 59 (3...
June 6, 2017: Surgery Today
https://www.readbyqxmd.com/read/28585898/circulating-extracellular-dna-levels-are-acutely-elevated-in-ischaemic-stroke-and-associated-with-innate-immune-system-activation
#12
Grant C O'Connell, Ashley B Petrone, Connie S Tennant, Noelle Lucke-Wold, Yasser Kabbani, Abdul R Tarabishy, Paul D Chantler, Taura L Barr
OBJECTIVE: The objective of this work was to assess the ability of peripheral blood cell-free DNA (cfDNA) levels to identify ischaemic stroke early in the acute phase of care, as well as to examine the relationship between peripheral blood cfDNA levels and stroke-induced innate immune system activation. METHODS: Upon emergency department admission, peripheral blood samples were obtained from 43 patients experiencing acute ischaemic stroke and 20 patients identified as stroke mimics...
June 6, 2017: Brain Injury: [BI]
https://www.readbyqxmd.com/read/28583511/blood-count-values-and-ratios-for-predicting-sleep-apnea-in-obese-children
#13
Ibrahim Erdim, Omer Erdur, Fatih Oghan, Fatih Mete, Mustafa Celik
OBJECTIVES: To detect whether the mean platelet volume (MPV), neutrophil-to-lymphocyte ratio (NLR), and platelet-to-lymphocyte ratio (PLR) are contributing factors in the diagnosis and severity of sleep apnea in obese children. INTRODUCTION: Obesity is a public health problem, and its prevalence increases daily. Although PSG is the gold standard test in the investigation of sleep apnea, the application of this test requires equipment, personnel, time, and cost. There is no simple laboratory test for diagnosing and determining the severity of sleep apnea...
July 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28577649/patient-posture-for-blood-collection-by-venipuncture-recall-for-standardization-after-28-years
#14
Gabriel Lima-Oliveira, Gian Cesare Guidi, Gian Luca Salvagno, Elisa Danese, Martina Montagnana, Giuseppe Lippi
BACKGROUND: Although data about the effect of posture on routine hematological testing were published 28 years ago, this pre-analytical issue has not been standardized so far. This study was planned to evaluate whether postural changes influence the results of hematology testing. METHODS: A complete blood count was performed in 19 healthy volunteers after 25min in the supine position, 20min in a sitting position and 20min stationary standing in an upright position...
April 2017: Revista Brasileira de Hematologia e Hemoterapia
https://www.readbyqxmd.com/read/28570672/mirasol-pathogen-reduction-technology-treatment-of-human-whole-blood-does-not-induce-acute-lung-injury-in-mice
#15
Beñat Mallavia, Nicholas Kwaan, Susanne Marschner, Susan Yonemura, Mark R Looney
In resource-limited settings and in the military theater, fresh human whole blood is commonly transfused, but infectious risks are a concern. Sophisticated molecular testing for potential infectious agents in the whole blood is often unavailable. To address this unmet need, pathogen reduction technology (PRT) has been developed, and it is an effective approach to inactivate a broad range of pathogens found in human blood. However, studies are needed to determine if it is harmful to blood cells and whether these cells could damage the transfused recipient, including the development of acute lung injury/acute respiratory distress syndrome...
2017: PloS One
https://www.readbyqxmd.com/read/28558837/long-term-clinical-outcomes-following-treatment-with-alpha-1-proteinase-inhibitor-for-copd-associated-with-alpha-1-antitrypsin-deficiency-a-look-at-the-evidence
#16
REVIEW
Franck F Rahaghi, Marc Miravitlles
Alpha-1 antitrypsin deficiency (AATD) is a common hereditary disorder caused by mutations in the SERPINA1 gene, which encodes alpha-1 antitrypsin (AAT; also known as alpha 1-proteinase inhibitor, A1-PI). An important function of A1-PI in the lung is to inhibit neutrophil elastase, one of various proteolytic enzymes released by activated neutrophils during inflammation. Absence or deficiency of A1-PI leads to an imbalance between elastase and anti-elastase activity, which results in progressive, irreversible destruction of lung tissue, and ultimately the development of chronic obstructive pulmonary disease with early-onset emphysema...
May 30, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28553230/the-lrrc8a-mediated-swell-activated-chloride-conductance-is-dispensable-for-vacuolar-homeostasis-in-neutrophils
#17
Philippe Behe, Juliet R Foote, Adam P Levine, Craig D Platt, Janet Chou, Fernando Benavides, Raif S Geha, Anthony W Segal
The dialysis of human and mouse neutrophils in patch clamp experiments in the conventional whole-cell mode induces the emergence of a chloride (Cl(-)) current that appeared to be primarily regulated by cytoplasmic ionic strength. The characteristics of this current resembled that of the classical, and ubiquitous volume-sensitive outwardly rectifying Cl(-) current: strong outward rectification, selectivity sequence of the Eisenman1 type, insensitivity to external pH and strong inhibition by tamoxifen, DCPIB and WW781...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28550659/hyperoxia-provokes-a-time-and-dose-dependent-inflammatory-response-in-mechanically-ventilated-mice-irrespective-of-tidal-volumes
#18
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/28547129/quantitative-analysis-of-dynamic-18-f-fdg-pet-ct-for-measurement-of-lung-inflammation
#19
Christopher Coello, Marie Fisk, Divya Mohan, Frederick J Wilson, Andrew P Brown, Michael I Polkey, Ian Wilkinson, Ruth Tal-Singer, Philip S Murphy, Joseph Cheriyan, Roger N Gunn
BACKGROUND: An inflammatory reaction in the airways and lung parenchyma, comprised mainly of neutrophils and alveolar macrophages, is present in some patients with chronic obstructive pulmonary disease (COPD). Thoracic fluorodeoxyglucose ((18)F-FDG) positron emission tomography (PET) has been proposed as a promising imaging biomarker to assess this inflammation. We sought to introduce a fully quantitative analysis method and compare this with previously published studies based on the Patlak approach using a dataset comprising (18)F-FDG PET scans from COPD subjects with elevated circulating inflammatory markers (fibrinogen) and matched healthy volunteers (HV)...
December 2017: EJNMMI Research
https://www.readbyqxmd.com/read/28544986/morphometric-characteristics-of-neutrophils-stimulated-by-adhesion-and-hypochlorite
#20
Tatsiana Kuznetsova, Tatsiana Kulahava, Ivan Zholnerevich, Nadezda Amaegberi, Galina Semenkova, Oleg Shadyro, Juergen Arnhold
The aim of this work was to compare cell form, size and volume as well as the locomotor activity of polymorphonuclear leukocytes (PMNLs) stimulated by adhesion to glass and exposed to hypochlorous acid at non-toxic dose. After 20min of adhesion to a glass surface, volume, cell surface area and projection area of PMNLs were equaled to 143.1±21.4μm(3), 288.8±28.8μm(2) and 248.3±32.3μm(2), respectively. Projection area of PMNLs exposed to NaOCl was noticeably enlarged as compared with control samples. The cell volume of 20min adherent cells exposed to NaOCl was enlarged in comparison with both control cells and 5min adhered exposed to NaOCl cells...
May 22, 2017: Molecular Immunology
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