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https://www.readbyqxmd.com/read/27913953/neuroinflammation-induced-downregulation-of-hippocampacal-neuregulin-1-erbb4-signaling-in-the-parvalbumin-interneurons-might-contribute-to-cognitive-impairment-in-a-mouse-model-of-sepsis-associated-encephalopathy
#1
Rong Gao, Mu-Huo Ji, Da-Peng Gao, Run-Hua Yang, Shao-Gang Zhang, Jian-Jun Yang, Jin-Chun Shen
Sepsis-associated encephalopathy (SAE) is a common complication associated with poor prognosis in septic patients, but the underlying mechanism remains unclear. We hypothesized that disturbed neuregulin 1 (NRG1)-ErbB4 signaling in the parvalbumin interneurons was involved in sepsis-induced cognitive impairment in a mouse model of SAE. The SAE model was induced by cecal ligation/perforation (CLP). Animals were randomly divided into the following six groups: sham + vehicle group, sham + NRG1 group, CLP + vehicle group, CLP + NRG1 group, CLP + NRG1 + AG1478 (ErbB4 inhibitor) group, and CLP + minocycline group...
December 2, 2016: Inflammation
https://www.readbyqxmd.com/read/27913094/hematopoietic-stem-cell-niches-produce-lineage-instructive-signals-to-control-multipotent-progenitor-differentiation
#2
Ana Cordeiro Gomes, Takahiro Hara, Vivian Y Lim, Dietmar Herndler-Brandstetter, Erin Nevius, Tatsuki Sugiyama, Shizue Tani-Ichi, Susan Schlenner, Ellen Richie, Hans-Reimer Rodewald, Richard A Flavell, Takashi Nagasawa, Koichi Ikuta, João Pedro Pereira
Hematopoietic stem cells (HSCs) self-renew in bone marrow niches formed by mesenchymal progenitors and endothelial cells expressing the chemokine CXCL12, but whether a separate niche instructs multipotent progenitor (MPP) differentiation remains unclear. We show that MPPs resided in HSC niches, where they encountered lineage-instructive differentiation signals. Conditional deletion of the chemokine receptor CXCR4 in MPPs reduced differentiation into common lymphoid progenitors (CLPs), which decreased lymphopoiesis...
November 23, 2016: Immunity
https://www.readbyqxmd.com/read/27909955/suppressive-effects-of-dabrafenib%C3%A2-on-endothelial-protein-c-receptor-shedding
#3
Sae-Kwang Ku, Jongdoo Kim, Sang Chan Kim, Jong-Sup Bae
Beyond its role in the activation of protein C, the endothelial cell protein C receptor (EPCR) plays an important role in the cytoprotective pathway. EPCR can be shed from the cell surface, which is mediated by tumor necrosis factor-α converting enzyme (TACE). Dabrafenib (DAB) is a B-Raf inhibitor and initially used for the treatment of metastatic melanoma therapy. However, little is known about the effects of DAB on EPCR shedding. We investigated this issue by monitoring the effects of DAB on phorbol-12-myristate 13-acetate (PMA)-, tumor necrosis factor (TNF)-α-, interleukin (IL)-1β-induced EPCR shedding in human umbilical vein endothelial cells (HUVECs), and cecal ligation and puncture (CLP)-mediated EPCR shedding in mice and underlying mechanism...
December 1, 2016: Archives of Pharmacal Research
https://www.readbyqxmd.com/read/27905647/-cleft-lip-palate-and-flour-fortification-with-folic-acid-in-chile
#4
Angélica Paulos, Paulina Pino, Gabriel Cavada, Carolina Lagos, Valentina Broussain, Andrea Hasbún
BACKGROUND: The effect of food fortification with folic acid on the incidence of lip-palate fissures (FLP) is under discussion. AIM: To calculate the rate of hospital discharges due to cleft lip and palate (CLP) and explore whether they decreased after the start of folic acid fortification in Chile. MATERIAL AND METHODS: The hospital discharge databases published by the Chilean Ministry of Health were analyzed. The trends of discharge rates due to CLP of children of less than one year of life (ICD-10 Q350-379 code) and live births (lb) were calculated from 1986 to 2012...
August 2016: Revista Médica de Chile
https://www.readbyqxmd.com/read/27905622/-gastos-hospitalarios-por-neumon%C3%A3-a-neumoc%C3%A3-ccica-invasora-en-adultos-en-un-hospital-general-en-chile
#5
Álvaro Alarcón, Isabel Lagos, Alberto Fica
: Pneumococcal infections are important for their morbidity and economic burden, but there is no economical data from adults patients in Chile. AIMS: Estimate direct medical costs of bacteremic pneumococcal pneumonia among adult patients hospitalized in a general hospital and to evaluate the sensitivity of ICD 10 discharge codes to capture infections from this pathogen. METHODS: Analysis of hospital charges by components in a group of patients admitted for bacteremic pneumococcal pneumonia, correction of values by inflation and conversion from CLP to US$...
August 2016: Revista Chilena de Infectología: órgano Oficial de la Sociedad Chilena de Infectología
https://www.readbyqxmd.com/read/27904994/rapamycin-protects-sepsis-induced-cognitive-impairment-in-mouse-hippocampus-by-enhancing-autophagy
#6
Wenyu Liu, Jia'nan Guo, Jie Mu, Linyu Tian, Dong Zhou
The purpose of this study is to test the hypothesis that the mammalian target of rapamycin (mTOR) signaling pathway might mediate neuroprotection in a mouse model of septic encephalopathy and also to identify the role of autophagy. Mice were subjected to cecal ligation and puncture (CLP) or a sham operation, and all 50 mice were randomly assigned to five groups: sham, CLP+ saline, CLP+ rapamycin (1, 5, 10 mg/kg) groups. Two weeks after the operation, Morris water maze was conducted for behavioral test; Nissl staining was used for observing glia infiltration; immunohistochemical staining and biochemical measures in hippocampi were performed to detect mTOR targets and autophagy indicators...
December 1, 2016: Cellular and Molecular Neurobiology
https://www.readbyqxmd.com/read/27902566/conditioned-pain-modulation-in-non-specific-chronic-back-pain-patients-with-chronic-local-pain-chronic-widespread-pain-and-fibromyalgia
#7
Andreas Gerhardt, Wolfgang Eich, Rolf-Detlef Treede, Jonas Tesarz
Findings considering conditioned pain modulation (CPM) in chronic back pain (CBP) are contradictory. This might be because many CBP patients report pain in further areas of the body and altered CPM might influence spatial extent of pain rather than CBP per se. Therefore, we compared CPM in CBP patients with different pain extent. Fibromyalgia syndrome (FMS) patients, for whom CPM-impairment is reported most consistently, were measured for comparison.Based on clinical evaluation and pain-drawings patients were categorized into chronic local back pain (CLP; n=53), chronic widespread back pain (CWP; n=32), and FMS (n=92)...
November 28, 2016: Pain
https://www.readbyqxmd.com/read/27902475/osthole-protects-sepsis-induced-acute-kidney-injury-via-down-regulating-nf-%C3%AE%C2%BAb-signal-pathway
#8
Chen Yu, Peng Li, Dong Qi, Lei Wang, Hong-Lin Qu, Yue-Juan Zhang, Xue-Kai Wang, Hua-Ying Fan
BACKGROUND AND PURPOSE: As a natural coumarin derivative from the Cnidium monnieri(L)Cusson fruit, osthole consists of 7-methoxy-8-isopentenoxy-coumarin. The purpose of this research is to study the mechanism and effect of osthole on sepsis-induced acute kidney injury. EXPERIMENTAL APPROACH: The protective effect of osthole on mouse macrophage RAW 264.7 and HK-2 cells induced by LPS in vitro and on acute kidney injury model induced by sepsis and established by puncture and cecal ligation (CLP) in vivo were tested...
November 25, 2016: Oncotarget
https://www.readbyqxmd.com/read/27899278/benznidazole-the-trypanocidal-drug-used-for-chagas-disease-induces-hepatic-nrf2-activation-and-attenuates-the-inflammatory-response-in-a-murine-model-of-sepsis
#9
Flavia Lambertucci, Omar Motiño, Silvina Villar, Juan Pablo Rigalli, María de Luján Alvarez, Viviana Catania, Paloma Martín-Sanz, Cristina Ester Carnovale, Ariel Darío Quiroga, Daniel Eleazar Francés, María Teresa Ronco
Molecular mechanisms on sepsis progression are linked to the imbalance between reactive oxygen species (ROS) production and cellular antioxidant capacity. Previous studies demonstrated that benznidazole (BZL), known for its antiparasitic action on Trypanosoma cruzi, has immunomodulatory effects, increasing survival in C57BL/6 mice in a model of polymicrobial sepsis induced by cecal ligation puncture (CLP). The mechanism by which BZL inhibits inflammatory response in sepsis is poorly understood. Also, our group recently reported that BZL is able to activate the nuclear erythroid 2-related factor 2 (NRF2) in vitro...
November 26, 2016: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/27897086/pattern-of-clefts-and-dental-anomalies-in-six-year-old-children-a-retrospective-observational-study-in-western-norway
#10
Paul Sæle, Eirik Østhus, Sondre Ådalen, Elwalid F Nasir, Manal Mustafa
OBJECTIVES: Clefts of the lip and/or palate (CL/P) are the most common congenital disorders of the head and neck. In Norway, the incidence is 1.9/1000 live births. The aim of this study was to investigate the frequency and distribution of various types of clefts and dental anomalies in patients treated by the cleft lip and palate (CLP) team in Bergen, Norway. MATERIAL AND METHODS: The material comprised the records of patients 6 years of age, examined by the CLP team in Bergen from spring 1993 to autumn 2012, incomplete records were excluded...
November 29, 2016: Acta Odontologica Scandinavica
https://www.readbyqxmd.com/read/27895015/protective-effects-of-human-and-mouse-soluble-scavenger-like-cd6-lymphocyte-receptor-in-a-lethal-model-of-polymicrobial-sepsis
#11
Mario Martínez-Florensa, Marta Consuegra-Fernández, Fernando Aranda, Noelia Armiger-Borràs, Marianna Di Scala, Esther Carrasco, Jerónimo Pachón, Jordi Vila, Gloria González-Aseguinolaza, Francisco Lozano
Sepsis still constitutes an unmet clinical need, which could benefit from novel adjunctive strategies to conventional antibiotic therapy. The soluble form of the scavenger-like human CD6 lymphocyte receptor (shCD6) binds to key pathogenic components from Gram-positive and -negative bacteria, and shows time- and dose-dependent efficacy in mouse models of monobacterial sepsis. The objective of the present work was to demonstrate the effectiveness of infusing mouse and human sCD6 by different systemic routes, either alone or as adjunctive therapy to gold-standard antibiotics, in a lethal model of polymicrobial sepsis...
November 28, 2016: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/27889435/role-of-hmgb1-translocation-to-neuronal-nucleus-in-rat-model-with-septic-brain-injury
#12
Yafei Li, Xihong Li, Yi Qu, Jichong Huang, Tingting Zhu, Fengyan Zhao, Shiping Li, Dezhi Mu
High-mobility Group Box-1 (HMGB1) is a central late proinflammatory cytokine that triggers the inflammatory response during sepsis. However, whether HMGB1 is involved in the pathogenesis of septic brain damage is unknown. In this study, we investigated the role of HMGB1 in regulating brain injury in a rat model of sepsis. Wistar rats were subjected to cecal ligation and puncture (CLP) to induce septic brain injury. Hematoxylin and eosin staining was used to detect pathological changes in the cortex. The cellular localization of HMGB1 was determined using immunostaining...
November 23, 2016: Neuroscience Letters
https://www.readbyqxmd.com/read/27878684/bakuchiol-protects-against-acute-lung-injury-in-septic-mice
#13
Xinxin Zhang, Ning Chang, Yong Zhang, Mingxiang Ye, Zhiping Han, Jie Li, Jian Zhang
Sepsis is a systemic inflammatory reaction that may lead to multiple organ damage and acute lung injury (ALI). Bakuchiol (Bak) has been reported to confer protection against inflammation and oxidative stress. However, its effect on sepsis-induced acute lung injury remains unclear. In the present study, male C57BL/6 mice were subjected to cecal ligation and puncture (CLP), and Bak (15, 30, 60 mg/kg) was administered intragastrically after 0 and 3 h of surgery. Lung water content was detected. Pathologic changes in lung tissues were evaluated via hematoxylin and eosin (H&E) staining...
November 23, 2016: Inflammation
https://www.readbyqxmd.com/read/27878281/etomidate-inhibits-nuclear-factor-%C3%AE%C2%BAb-through-decreased-expression-of-glucocorticoid-receptor-in-septic-rats
#14
Yu Zhang, Ruo-Meng Li, Chun Wang, Na Liu, Shen Lv, Jun-Yu Xiong
The present study aimed to investigate the effect of etomidate administered prior to or following cecal ligation and puncture (CLP) on the expression of glucocorticoid receptor (GR) and lymphocyte apoptosis in septic rats. Right jugular vein catheterization was performed on female Sprague‑Dawley rats under isoflurane anesthesia, and CLP surgery was performed to induce sepsis 3 days following catheterization. The rats were randomly divided into five groups. All groups were infused with 2 ml of either etomidate or 5‰ dimethyl sulfoxide (DMSO) at 1 ml/h for 2 h from 6 h post‑surgery...
November 16, 2016: Molecular Medicine Reports
https://www.readbyqxmd.com/read/27878209/preclinical-models-of-overwhelming-sepsis-implicate-the-neural-system-that-encodes-contextual-fear-memory
#15
Patricio T Huerta, Sergio Robbiati, Tomás Salvador Huerta, Anchal Sabharwal, Rose A Berlin, Maya Frankfurt, Bruce T Volpe
Long-term sepsis survivors sustain cryptic brain injury that leads to cognitive impairment, emotional imbalance, and increased disability burden. Suitable animal models of sepsis, such as cecal ligation and puncture (CLP), have permitted the analysis of abnormal brain circuits that underlie post-septic behavioral phenotypes. For instance, we have previously shown that CLP-exposed mice exhibit impaired spatial memory together with depleted dendritic arbors and decreased spines in the apical dendrites of pyramidal neurons in the CA1 region of the hippocampus...
November 17, 2016: Molecular Medicine
https://www.readbyqxmd.com/read/27876897/mmps-and-timps-expression-in-facial-tissue-of-children-with-cleft-lip-and-palate
#16
Liene Smane-Filipova, Mara Pilmane, Ilze Akota
BACKGROUND AND AIMS: Morphogenesis of the upper lip and palate is a complex process involving highly regulated interactions between epithelial and mesenchymal cells. Genetic evidence in humans and mice indicates the involvement of matrix metalloproteinases (MMPs) and their endogenous tissue inhibitors (TIMPs) in cleft lip palate (CLP) aetiology. This study investigated whether expression of MMP-2, MMP-8, MMP-9, TIMP-2, and TIMP-4, which are essential for the upper lip and palate fusion, is dysregulated in children with CLP...
November 21, 2016: Biomedical Papers of the Medical Faculty of the University Palacký, Olomouc, Czechoslovakia
https://www.readbyqxmd.com/read/27875749/systematic-investigation-on-the-turning-point-of-over-inflammation-to-immunosuppression-in-clp-mice-model-and-their-characteristics
#17
Dongmei Deng, Xiaoli Li, Chao Liu, Zhaoxia Zhai, Bin Li, Mei Kuang, Pan Li, Shenglan Shang, Yi Song, Yanyan Cen, Rongxin Qin, Yonglin Lu, Yibo Zhao, Hao Cheng, Jiang Zheng, Hong Zhou
Immunosuppression is involved in refractory innate and adaptive immune responses and is considered to be the predominant driving force for mortality in sepsis. The cecal ligation and puncture (CLP) model is regarded as a golden standard model for sepsis study, but the turning point of over-inflammation to immunosuppression was reported differently. Herein, systematic investigation on the turning point of over-inflammation to immunosuppression in CLP mice model was carried out. The results showed only the mortality of mice challenged with of Pseudomonas aeruginosa on Day 1 not other days after the surgery was higher than that of other mice with Sham surgery, suggesting Day 1 after the CLP surgery might be the turning point...
November 19, 2016: International Immunopharmacology
https://www.readbyqxmd.com/read/27871707/cone-beam-computed-tomography-synthesized-cephalometric-study-of-operated-unilateral-cleft-lip-and-palate-and-noncleft-children-with-class-iii-skeletal-relationship
#18
Yifan Lin, Zhen Fu, Lian Ma, Weiran Li
INTRODUCTION: Our objective was to compare the craniofacial hard and soft tissue characteristics between children with operated unilateral cleft lip and palate (UCLP) and children with noncleft lip and palate (non-CLP) with a Class III skeletal relationship. METHODS: The study sample consisted of 30 subjects (18 boys, 12 girls; mean age, 10.21 years) affected by UCLP and 30 non-CLP subjects (17 boys, 13 girls; mean age, 10.19 years) as the control group. All subjects were in the mixed dentition with a Class III skeletal relationship...
November 2016: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/27863433/assessment-of-differentially-expressed-plasma-micrornas-in-nonsyndromic-cleft-palate-and-nonsyndromic-cleft-lip-with-cleft-palate
#19
Jingyun Li, Jijun Zou, Qian Li, Ling Chen, Yanli Gao, Hui Yan, Bei Zhou, Jun Li
Plasma microRNAs (miRNAs) have recently emerged as a new class of regulatory molecules that influence many biological functions. However, the expression profile of plasma microRNAs in nonsyndromic cleft palate (NSCP) or nonsyndromic cleft lip with cleft palate (NSCLP) remains poorly investigated. In this study, we used Agilent human miRNA microarray chips to monitor miRNA levels in three NSCP plasma samples (mixed as the CP group), three NSCLP plasma samples (mixed as the CLP group) and three normal plasma samples (mixed as the Control group)...
November 16, 2016: Oncotarget
https://www.readbyqxmd.com/read/27849678/fc-gamma-receptor-iib-deficient-mice-a-lupus-model-with-increased-endotoxin-tolerance-related-sepsis-susceptibility
#20
Thunnicha Ondee, Saowapha Surawut, Sujittra Taratummarat, Nattiya Hirankan, Tanapat Palaga, Prapaporn Pisitkun, Trairak Pisitkun, Asada Leelahavanichkul
Hyper-elevated immune response of FcGRIIb-/- mice, a lupus model with an inhibitory-signaling defect, can become exhausted (less subsequent immune-response than the first response) with sequential LPS stimulation. Endotoxin tolerance-related modifications of inflammatory response were investigated in FcGRIIb-/- mice in both an in vivo sepsis model and in vitro using cultured macrophages. Serum cytokine concentrations, after the second LPS injection (at 5-fold higher levels than the first dose) did not exceed the first dose levels in either FcGRIIb-/- or wild-type mice...
November 15, 2016: Shock
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