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https://www.readbyqxmd.com/read/29783161/candidate-gene-analysis-in-the-s%C3%A3-o-paulo-epidemiologic-sleep-study-episono-shows-an-association-of-variant-in-pde4d-and-sleepiness
#1
Victoria M Pak, Diego R Mazzotti, Brendan T Keenan, Camila Hirotsu, Philip Gehrman, Lia Bittencourt, Allan I Pack, Sergio Tufik
INTRODUCTION: Sleepiness and cardiovascular disease share common molecular pathways; thus, genetic risk factors for sleepiness may also predict cardiovascular disease risk. This study explored the associations between subjective sleepiness and single-nucleotide polymorphisms (SNPs) in candidate genes within oxidative stress, inflammatory, and neuronal pathways, which may contribute to sleepiness and downstream cardiovascular disease risk: Cytochrome B-245, Alpha Polypeptide (CYBA), Cytochrome B-245, Beta Polypeptide (CYBB), Neutrophil Cytosolic Factor (NCF2), Tumor Necrosis Factor-Alpha (TNFA), and Phosphodiesterase 4D (PDE4D)...
January 12, 2018: Sleep Medicine
https://www.readbyqxmd.com/read/29782949/early-detection-of-pancreatic-cancers-in-liquid-biopsies-by-ultrasensitive-fluorescence-nanobiosensors
#2
Madumali Kalubowilage, Obdulia Covarrubias-Zambrano, Aruni P Malalasekera, Sebastian O Wendel, Hongwang Wang, Asanka S Yapa, Lauren Chlebanowski, Yubisela Toledo, Raquel Ortega, Katharine E Janik, Tej B Shrestha, Christopher T Culbertson, Anup Kasi, Stephen Williamson, Deryl L Troyer, Stefan H Bossmann
Numerous proteases, such as matrix metalloproteinases (MMP's), cathepsins (CTS), and urokinase plasminogen activator (UpA), are dysfunctional (that is, over- or under-expressed) in solid tumors, when compared to healthy human subjects. This offers the opportunity to detect early tumors by liquid biopsies. This approach is of particular advantage for the early detection of pancreatic cancer, which is a "silent killer". We have developed fluorescence nanobiosensors for ultrasensitive (sub-femtomolar) arginase and protease detection, consisting of water-dispersible Fe/Fe3 O4 core/shell nanoparticles and two tethered fluorescent dyes: TCPP (Tetrakis(4-carboxyphenyl)porphyrin) and cyanine 5...
May 18, 2018: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/29782839/different-regulation-of-cortisol-and-corticosterone-in-the-subterranean-rodent-ctenomys-talarum-responses-to-dexamethasone-angiotensin-ii-potassium-and-diet
#3
Federico Vera, C Daniel Antenucci, Roxana R Zenuto
When harmful environmental stimuli occur, glucocorticoids (GCs), cortisol and corticosterone are currently used to evaluate stress status in vertebrates, since their secretions are primarily associated to an increased activity of the hypothalamic-pituitary-adrenal (HPA) axis. To advance in our comprehension about GCs regulation, we evaluated the subterranean rodent Ctenomys talarum to assess cortisol and corticosterone response to (1) the negative feedback of the HPA axis using the dexamethasone (DEX) suppression test, (2) angiotensin II (Ang II), (3) potassium (K+ ) intake, and (4) different diets (vegetables, grasses, acute fasting)...
May 18, 2018: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/29782541/an-unappreciated-role-for-neutrophil-dc-hybrids-in-immunity-to-invasive-fungal-infections
#4
J Scott Fites, Michael Gui, John F Kernien, Paige Negoro, Zeina Dagher, David B Sykes, Jeniel E Nett, Michael K Mansour, Bruce S Klein
Neutrophils are classically defined as terminally differentiated, short-lived cells; however, neutrophils can be long-lived with phenotypic plasticity. During inflammation, a subset of neutrophils transdifferentiate into a population called neutrophil-DC hybrids (PMN-DCs) having properties of both neutrophils and dendritic cells. While these cells ubiquitously appear during inflammation, the role of PMN-DCs in disease remains poorly understood. We observed the differentiation of PMN-DCs in pre-clinical murine models of fungal infection: blastomycosis, aspergillosis and candidiasis...
May 21, 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29782427/clinical-profile-of-levamisole-adulterated-cocaine-induced-vasculitis-vasculopathy-a-30-case-series
#5
Carlos Horacio Muñoz-Vahos, Sebastián Herrera-Uribe, Álvaro Arbeláez-Cortés, Daniel Jaramillo-Arroyave, Luis Alonso González-Naranjo, Gloria Vásquez-Duque, Mauricio Restrepo-Escobar, Luis Alfonso Correa-Londoño, Luis Fernando Arias-Restrepo, Adriana Lucía Vanegas-García
OBJECTIVES: The aims of this study were to describe clinical and laboratory manifestations of patients with levamisole-adulterated cocaine-induced vasculitis/vasculopathy and to propose a skin classification according to the distribution and severity of lesions. METHODS: We report the characteristics of 30 patients admitted with levamisole-adulterated cocaine-induced vasculitis/vasculopathy in 4 high-complexity institutions in Colombia, from December 2010 to May 2017...
May 19, 2018: Journal of Clinical Rheumatology: Practical Reports on Rheumatic & Musculoskeletal Diseases
https://www.readbyqxmd.com/read/29782381/high-baseline-neutrophil-to-lymphocyte-ratio-predicts-worse-outcome-in-patients-with-metastatic-braf-positive-melanoma-treated-with-braf-and-mek-inhibitors
#6
Paweł Teterycz, Paulina Jagodzińska-Mucha, Bożena Cybulska-Stopa, Anna Mariuk-Jarema, Katarzyna Kozak, Hanna Koseła-Paterczyk, Anna M Czarnecka, Marcin Rajczykowski, Robert Dziura, Łukasz Galus, Jacek Mackiewicz, Tomasz Świtaj, Anna Klimczak, Slawomir Falkowski, Rafał Suwiński, Marek Ziobro, Iwona Ługowska, Piotr Rutkowski
Neutrophil-to-lymphocyte ratio (NLR) has been shown to be prognostic in several solid malignancies. There are limited data regarding its value during novel therapies in patients with melanoma. The aim of the study was to assess the practical utility of this ratio in patients with BRAF-mutant melanoma treated with a combination of BRAF and MEK inhibitors (BRAFi/MEKi). We included 215 patients with inoperable or metastatic melanoma who underwent BRAFi/MEKi treatment between October 2015 and June 2017. Baseline NLR and other complete blood count-derived inflammatory markers were tested for association with overall survival and progression-free survival in univariate and multivariate models...
May 18, 2018: Melanoma Research
https://www.readbyqxmd.com/read/29782286/-ngal-as-a-marker-for-some-extrarenal-complications-in-acute-coronary-syndrome
#7
M A Shalenkova, Z D Mikhailova, P F Klimkin
AIM: To study the role of neutrophil gelatinase-associated lipocalin (NGAL) as a marker for extrarenal complications in patients with acute coronary syndrome (ACS). MATERIALS AND METHODS: For 110 patients with ACS on days 1-3 of hospitalization, concentrations of NGAL, serum (s-NGAL) and urinary (u-NGAL) NGAL, and N-terminal fragment of pro-B natriuretic peptide (NT-proBNP) were measured, and transthoracic echocardiography was performed. Incidence of cardiovascular complications was determined during the stay in the hospital; hemodynamic parameters (systolic and diastolic blood pressure, heart rate) were measured on admission...
2018: Kardiologiia
https://www.readbyqxmd.com/read/29782199/bacteriolysis-a-mere-laboratory-curiosity
#8
Isaac Ginsburg, Erez Koren
The role of bacteriolysis in the pathophysiology of microbial infections dates back to 1893 when Buchner and Pfeiffer reported for the first time the lysis of bacteria by immune serum and related this phenomenon to the immune response. Later on, basic anti-microbial peptides and certain beta-lactam antibiotics have been shown not only to kill microorganisms but also to induce bacteriolysis and the release of cell-wall components. In 2009, a novel paradigm was offered suggesting that the main cause of death in sepsis is due to the exclusive release from activated human phagocytic neutrophils (PMNs) traps adhering upon endothelial cells of highly toxic nuclear histone...
May 21, 2018: Critical Reviews in Microbiology
https://www.readbyqxmd.com/read/29782179/early-intravascular-events-are-associated-with-development-of-ards
#9
Raja-Elie E Abdulnour, Tina Gunderson, Ioanna Barkas, Jack Y Timmons, Cindy Barnig, Michelle Gong, Daryl J Kor, Ognjen Gajic, Daniel Talmor, Rickey E Carter, Bruce D Levy
RATIONALE: The acute respiratory distress syndrome (ARDS) is a devastating illness with limited therapeutic options. A better understanding of early biochemical and immunological events in ARDS could inform the development of new preventive and treatment strategies. OBJECTIVE: To determine select peripheral blood lipid mediator and leukocyte responses in patients at-risk for ARDS. METHODS: Patients at risk for ARDS were randomized as part of a multicenter, double-blind clinical trial of aspirin versus placebo (LIPS-A; NCT01504867)...
May 21, 2018: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/29781811/spleen-derived-classical-monocytes-mediate-lung-ischemia-reperfusion-injury-through-il-1%C3%AE
#10
Hsi-Min Hsiao, Ramiro Fernandez, Satona Tanaka, Wenjun Li, Jessica H Spahn, Stephen Chiu, Mahzad Akbarpour, Daniel Ruiz-Perez, Qiang Wu, Cem Turam, Davide Scozzi, Tsuyoshi Takahashi, Hannah P Luehmann, Varun Puri, G R Scott Budinger, Alexander S Krupnick, Alexander V Misharin, Kory J Lavine, Yongjian Liu, Andrew E Gelman, Ankit Bharat, Daniel Kreisel
Ischemia-reperfusion injury, a form of sterile inflammation, is the leading risk factor for both short-term mortality following pulmonary transplantation and chronic lung allograft dysfunction. While it is well recognized that neutrophils are critical mediators of acute lung injury, processes that guide their entry into pulmonary tissue are not well understood. Here, we found that CCR2+ classical monocytes are necessary and sufficient for mediating extravasation of neutrophils into pulmonary tissue during ischemia-reperfusion injury following hilar clamping or lung transplantation...
May 21, 2018: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29781801/methanonatronarchaeum-thermophilum-gen-nov-sp-nov-and-candidatus-methanohalarchaeum-thermophilum-extremely-halo-natrono-philic-methyl-reducing-methanogens-from-hypersaline-lakes-comprising-a-new-euryarchaeal-class-methanonatronarchaeia-classis-nov
#11
Dimitry Y Sorokin, Alexander Y Merkel, Ben Abbas, Kira S Makarova, W Irene C Rijpstra, M Koenen, Jaap S Sinninghe Damsté, Erwin A Galinski, Eugene V Koonin, Mark C M van Loosdrecht
Methanogenic enrichments from hypersaline lakes at moderate thermophilic conditions have resulted in the cultivation of an unknown deep lineage of euryarchaeota related to the class Halobacteria. Eleven soda lake isolates and three salt lake enrichment cultures were methyl-reducing methanogens that utilize C1 methylated compounds as electron acceptors and H2 or formate as electron donors, but they were unable to grow on either substrates alone or to form methane from acetate. They are extreme halophiles, growing optimally at 4 M total Na+ and the first representatives of methanogens employing the 'salt-in' osmoprotective mechanism...
May 21, 2018: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/29781584/erythema-ab-igne
#12
Isabelle Marie
A 41 year-old woman was diagnosed as having limited cutaneous systemic sclerosis (SSc) in March 2012. The cutaneous impairment of SSc was characterized by sclerodactyly associated with pitting scars; systemic manifestations of SSc included esophageal involvement, with both absence of peristalsis in the lower two-thirds of the oesophageal body and low pressure in the lower oesophageal sphincter. In 2017, the patient presented with livedo reticularis lesions of her abdomen (Panel A) evolving for one month. The patient denied pruritus, pain, or exposure of abdomen to irritants prior to lesion onset...
May 21, 2018: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/29781582/sphingosine-1-phosphate-receptor-1-signaling-maintains-endothelial-cell-barrier-function-and-protects-against-immune-complex-induced-vascular-injury
#13
Nathalie Burg, Steven Swendeman, Stefan Worgall, Timothy Hla, Jane E Salmon
OBJECTIVE: Immune complex (IC) deposition activates neutrophils (PMN), increases vascular permeability and leads to organ damage in SLE and RA. The bioactive lipid sphingosine-1-phosphate (S1P), acting via S1P receptor 1 (S1P1 ), is a key regulator of endothelial cell (EC) barrier function. We hypothesized that augmenting EC integrity via S1P1 signaling would attenuate inflammatory injury mediated by ICs. METHODS: In vitro barrier function was assessed in human umbilical vein endothelial cells (HUVECs) by Electric Cell-substrate Impedance Sensing (ECIS)...
May 21, 2018: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/29781563/associations-between-neutrophil-recovery-time-infections-and-relapse-in-pediatric-acute-myeloid-leukemia
#14
Ditte J A Løhmann, Peter H Asdahl, Jonas Abrahamsson, Shau-Yin Ha, Ólafur G Jónsson, Gertjan J L Kaspers, Minna Koskenvuo, Birgitte Lausen, Barbara De Moerloose, Josefine Palle, Bernward Zeller, Henrik Hasle
BACKGROUND: Children with acute myeloid leukemia (AML) treated similarly show different toxicity and leukemic responses. We investigated associations between neutrophil recovery time after the first induction course, infection and relapse in children treated according to NOPHO-AML 2004 and DB AML-01. PROCEDURE: Newly diagnosed patients with AML with bone marrow blast <5% between day 15 after the start of the treatment and the start of second induction course, and in complete remission after the second induction course were included (n = 279)...
May 21, 2018: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/29781285/response-to-the-letter-to-the-editor-the-relationship-between-neutrophil-lymphocyte-ratio-and-in-stent-restenosis
#15
Zhihui Chang, Jiahe Zheng, Zhaoyu Liu, Qiyong Guo
No abstract text is available yet for this article.
January 1, 2018: Angiology
https://www.readbyqxmd.com/read/29781185/helper-t-cell-responses-and-pulmonary-fungal-infections
#16
REVIEW
Andrew J McDermott, Bruce S Klein
The mucosal surface of the respiratory tract encounters microbes, such as fungal particles, with every inhaled breath. When pathogenic fungi breach the physical barrier and innate immune system within the lung to establish an infection, adaptive immunity is engaged often in the form of helper CD4 T-cell responses. Type 1 responses, characterized by IFNγ production from CD4 cells, promote clearance of Histoplasma capsulatum and Cryptococcus neoformans infection. Likewise, IL-17A production from Th17 cells promotes immunity to Blastomyces dermatitidis and Coccidiodes species infection by recruiting neutrophils...
May 20, 2018: Immunology
https://www.readbyqxmd.com/read/29780806/myeloperoxidase-negatively-regulates-neutrophil-endothelial-cell-interactions-by-impairing-%C3%AE-m%C3%AE-2-integrin-function-in-sterile-inflammation
#17
Alan Tseng, Kyungho Kim, Jing Li, Jaehyung Cho
Interactions of neutrophils with endothelial cells (ECs) and platelets contribute to tissue damage and vascular occlusion under sterile inflammatory conditions. However, the molecular mechanisms regulating the cell-cell interactions remain poorly understood. Previous studies suggest that reactive oxygen species, such as hydrogen peroxide (H2 O2 ), produced from NADPH oxidase 2 play a critical role in platelet-neutrophil interactions by regulating the function of neutrophil αMβ2 integrin during sterile inflammation...
2018: Frontiers in Medicine
https://www.readbyqxmd.com/read/29780782/combination-of-clinical-and-laboratory-characteristics-may-serve-as-a-potential-diagnostic-marker-for-torsion-on-mature-cystic-teratomas
#18
Ji Yun Lee, Whan Shin, Jeong Sook Kim, Joo Hyun Park, SiHyun Cho
Objective: The objective of this study was to evaluate clinical and laboratory characteristics of torsion on mature cystic teratomas (MCTs). In addition, we examined whether these factors could be helpful in diagnosing MCT torsion. Methods: A retrospective medical record review was conducted for 384 patients who had undergone surgery and histologically verified ovarian MCTs at single university hospital between July 2006 and May 2017. Patients with or without torsion groups were compared with respect to clinical presentation, laboratory findings and surgical course...
May 2018: Obstetrics & Gynecology Science
https://www.readbyqxmd.com/read/29780388/regulation-of-hematopoietic-cell-development-and-function-through-phosphoinositides
#19
REVIEW
Mila Elich, Karsten Sauer
One of the most paramount receptor-induced signal transduction mechanisms in hematopoietic cells is production of the lipid second messenger phosphatidylinositol(3,4,5)trisphosphate (PIP3 ) by class I phosphoinositide 3 kinases (PI3K). Defective PIP3 signaling impairs almost every aspect of hematopoiesis, including T cell development and function. Limiting PIP3 signaling is particularly important, because excessive PIP3 function in lymphocytes can transform them and cause blood cancers. Here, we review the key functions of PIP3 and related phosphoinositides in hematopoietic cells, with a special focus on those mechanisms dampening PIP3 production, turnover, or function...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29780379/point-mutation-of-a-non-elastase-binding-site-in-human-%C3%AE-1-antitrypsin-alters-its-anti-inflammatory-properties
#20
Yotam Lior, Mariana Zaretsky, David E Ochayon, Diana Lotysh, Boris M Baranovski, Ronen Schuster, Ofer Guttman, Amir Aharoni, Eli C Lewis
Introduction: Human α1-antitrypsin (hAAT) is a 394-amino acid long anti-inflammatory, neutrophil elastase inhibitor, which binds elastase via a sequence-specific molecular protrusion (reactive center loop, RCL; positions 357-366). hAAT formulations that lack protease inhibition were shown to maintain their anti-inflammatory activities, suggesting that some attributes of the molecule may reside in extra-RCL segments. Here, we compare the protease-inhibitory and anti-inflammatory profiles of an extra-RCL mutation (cys232pro) and two intra-RCL mutations (pro357cys, pro357ala), to naïve [wild-type (WT)] recombinant hAAT, in vitro , and in vivo ...
2018: Frontiers in Immunology
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