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https://www.readbyqxmd.com/read/29458169/inhibition-of-microsomal-prostaglandin-e-synthase-1-facilitates-liver-repair-after-hepatic-injury-in-mice
#1
Nobuyuki Nishizawa, Yoshiya Ito, Koji Eshima, Hirotoki Ohkubo, Ken Kojo, Tomoyoshi Inoue, Joan Raouf, Per-Johan Jakobsson, Satoshi Uematsu, Shizuo Akira, Shuh Narumiya, Masahiko Watanabe, Masataka Majima
BACKGROUND & AIMS: Liver repair following hepatic ischemia/reperfusion (I/R) injury is crucial to survival. This study aims to examine the role of endogenous prostaglandin E2 (PGE2 ) produced by inducible microsomal PGE synthase-1 (mPGES-1), a terminal enzyme of PGE2 generation, in liver injury and repair following hepatic I/R. METHODS: mPGES-1 deficient (mPGES-1-/- ) mice or their wild counterparts (WT) were subjected to partial hepatic ischemia followed by reperfusion...
February 16, 2018: Journal of Hepatology
https://www.readbyqxmd.com/read/29457989/propylthiouracil-induced-anti-neutrophil-cytoplasmic-antibody-associated-vasculitis-mimicking-kawasaki-disease
#2
Yoshihiro Aoki, Katsuhiko Kitazawa, Hironobu Kobayashi
Anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) is rare in children and is characterised as necrotising vasculitis predominantly affecting small and medium-sized vessels. Propylthiouracil (PTU), an antithyroid drug, has been implicated in drug-induced AAV. In contrast, Kawasaki disease (KD) is a common systemic vasculitis, typically observed in children, which affects the medium-sized vessels, including the coronary arteries. An 11-year-old girl who developed AAV while receiving PTU therapy for Graves' disease is described...
February 19, 2018: Paediatrics and International Child Health
https://www.readbyqxmd.com/read/29449577/neutralization-of-il-15-abrogates-experimental-immune-mediated-cholangitis-in-diet-induced-obese-mice
#3
José L Reyes, Danielle T Vannan, Tina Vo, Aliya Gulamhusein, Paul L Beck, Raylene A Reimer, Bertus Eksteen
Obesity is a global epidemic affecting chronic inflammatory diseases. Primary sclerosing cholangitis (PSC) is a chronic cholestatic liver disease that can occur as an extraintestinal manifestation of inflammatory bowel disease (IBD). Previously we reported that patients with PSC who are obese have a higher risk of advanced liver disease. Currently it is unknown how obesity accelerates or worsens PSC. We evaluated the progression of PSC in an antigen-driven cholangitis mouse model of diet-induced obesity. Obesity was induced in our murine model of immune-mediated cholangitis (OVAbil)...
February 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29448304/neutrophil-lymphocyte-ratio-as-a-method-of-predicting-complications-following-hepatic-resection-for-colorectal-liver-metastasis
#4
Simon J McCluney, Alexandros Giakoustidis, Angela Segler, Juliane Bissel, Roberto Valente, Robert R Hutchins, Ajit T Abraham, Satyajit Bhattacharya, Hemant M Kocher
BACKGROUND AND OBJECTIVES: Approximately 30-50% of patients with colorectal cancer develop liver metastasis for which liver resection is the only hope for potential cure. However, hepatic resection is associated with considerable morbidity. The aim was to detect early complications by utilising the neutrophil: lymphocyte ratio (NLR). METHODS: We performed a retrospective cohort study of patients undergoing hepatic resection at a single institution between 2008 and 2016...
February 15, 2018: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/29443058/two-photon-intravital-imaging-of-leukocytes-during-the-immune-response-in-lipopolysaccharide-treated-mouse-liver
#5
Sang A Park, Young Ho Choe, Sung Hwan Lee, Young-Min Hyun
Sepsis is a type of severe infection that can cause organ failure and tissue damage. Although the mortality and morbidity rates associated with sepsis are extremely high, no direct treatment or organ-related mechanism has been examined in detail in real time. The liver is the key organ that manages toxins and infections in the human body. Herein, we aimed to perform intravital imaging of mouse liver after induction of endotoxemia in order to track the motility of immune cells, such as neutrophils and liver capsular macrophages (LCMs)...
February 6, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29436479/the-ontogeny-of-a-neutrophil-mechanisms-of-granulopoiesis-and-homeostasis
#6
REVIEW
Shelley M Lawrence, Ross Corriden, Victor Nizet
Comprising the majority of leukocytes in humans, neutrophils are the first immune cells to respond to inflammatory or infectious etiologies and are crucial participants in the proper functioning of both innate and adaptive immune responses. From their initial appearance in the liver, thymus, and spleen at around the eighth week of human gestation to their generation in large numbers in the bone marrow at the end of term gestation, the differentiation of the pluripotent hematopoietic stem cell into a mature, segmented neutrophil is a highly controlled process where the transcriptional regulators C/EBP-α and C/EBP-ε play a vital role...
June 2018: Microbiology and Molecular Biology Reviews: MMBR
https://www.readbyqxmd.com/read/29434976/prediction-of-long-term-survival-rates-in-patients-undergoing-curative-resection-for-solitary-hepatocellular-carcinoma
#7
Yi Cao, Zhelong Jiang, Shaohu Wang, Haoyang Zhang, Yi Jiang, Lizhi Lv
The present study developed a novel laboratory-based algorithm to predict long-term survival rates in patients undergoing curative resection for solitary hepatitis B virus (HBV)-related hepatocellular carcinoma (HCC). The present study included 426 patients with solitary HBV-related HCC who underwent surgery for primary tumors at a single center between 2003 and 2012. Demographic characteristics, laboratory analysis, clinical pathology and immunohistochemistry of topoisomerase II-a and Ki67 were analyzed. A simple prognostic risk calculator was developed using regression coefficients from multivariate models...
February 2018: Oncology Letters
https://www.readbyqxmd.com/read/29434157/a-case-of-suspected-hepatically-localized-granulomatosis-with-polyangiitis
#8
Toshiki Yamamoto, Hitomi Ryuzaki, Shun Kobayashi, Shu Ohshiro, Masahiro Ogawa, Naohide Tanaka, Takuji Gotoda, Mitsuhiko Moriyama, Noriko Kinukawa, Masahiko Sugitani, Kenji Notohara
The patient was a 72-year-old woman whose alkaline phosphatase levels had been elevated since she was 56 years old. Liver biopsies obtained when the patient was 64 and 66 years of age led to a suspicion of cholangitis caused by vasculitis. Furthermore, proteinase-3 anti-neutrophil cytoplasmic antibody positivity led to a suspicion of granulomatosis with polyangiitis, but subjective symptoms and disorders in other organs were absent, so this suspicion was not confirmed. Cholangitis caused by vasculitis rarely occurs without vasculitis in other organs...
February 9, 2018: Internal Medicine
https://www.readbyqxmd.com/read/29433873/impact-of-repeated-abdominal-surgery-on-wound-healing-and-myeloid-cell-dynamics
#9
Gunes Esendagli, Digdem Yoyen-Ermis, Emil Guseinov, Cigdem Aras, Cisel Aydin, Aysegul Uner, Erhan Hamaloglu, Derya Karakoc
BACKGROUND: Even though wound dehiscence is a surgical complication, under certain medical conditions, repetition of the laparotomy (LT) (relaparotomy) can become inevitable. In addition to the risks associated with this surgical operation, relaparotomy can interfere with the tissue healing and contribute to the development of chronic wounds. METHODS: In an experimental relaparotomy wounding model, this study investigated the impact of repeated surgery on wound healing and on the immune cells of myeloid origin...
March 2018: Journal of Surgical Research
https://www.readbyqxmd.com/read/29433082/acute-exposure-to-chlorpyrifos-induces-reversible-changes-in-health-parameters-of-nile-tilapia-oreochromis-niloticus
#10
Eman Zahran, Engy Risha, Walaa Awadin, Dušan Palić
Chlorpyrifos (CPF) is one of the most common insecticides found in freshwater ecosystems, and has been detected in agricultural and fishery products worldwide. This study focused on comprehensive panel of hematological, immunotoxic and pathology changes in Nile tilapia (Oreochromis niloticus) during and after exposure to CPF at 15 μg/L (0.043 μM) (1/10 LC50, group CPF1), or 75 μg/L (0.21 μM) (1/2 LC50, group CPF2) for 14 days, followed by 2 weeks recovery. Different endpoints were used to determine effects of CPF on fish health: hematological parameters; antioxidant levels in liver and gills; innate immune parameters; expression levels of pro-inflammatory cytokine genes at mRNA level in anterior kidney and spleen; and histopathological assessment of gills, liver, and kidney tissues...
February 6, 2018: Aquatic Toxicology
https://www.readbyqxmd.com/read/29432836/quercetin-attenuates-the-hyperoxic-lung-injury-in-neonatal-mice-implications-for-bronchopulmonary-dysplasia-bpd
#11
Paramahamsa Maturu, Yanhong Wei-Liang, Vasilis P Androutsopoulos, Weiwu Jiang, Lihua Wang, Aristides M Tsatsakis, Xanthi I Couroucli
Quercetin (QU) is one of the most common flavonoids that are present in a wide variety of fruits, vegetables, and beverages. This compound possesses potent anti-inflammatory and anti-oxidant properties. Supplemental oxygen is routinely administered to premature infants with pulmonary insufficiency. However, hyperoxia is one of the major risk factors for the development of bronchopulmonary dysplasia (BPD), which is also termed chronic lung disease in premature infants. Currently, no preventive approaches have been reported against BPD...
February 9, 2018: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/29428101/optimized-postconditioning-algorithm-protects-liver-graft-after-liver-transplantation-in-rats
#12
Jian-Hui Li, Jun-Jun Jia, Wen Shen, Sha-Sha Chen, Li Jiang, Hai-Yang Xie, Lin Zhou, Shu-Sen Zheng
BACKGROUND: Ischemia reperfusion injury (IRI) causes postoperative complications and influences the outcome of the patients undergoing liver surgery and transplantation. Postconditioning (PostC) is a known manual conditioning to decrease the hepatic IRI. Here we aimed to optimize the applicable PostC protocols and investigate the potential protective mechanism. METHODS: Thirty Sprague-Dawley rats were randomly divided into 3 groups: the sham group (n = 5), standard orthotopic liver transplantation group (OLT, n = 5), PostC group (OLT followed by clamping and re-opening the portal vein for different time intervals, n = 20)...
February 2018: Hepatobiliary & Pancreatic Diseases International: HBPD INT
https://www.readbyqxmd.com/read/29426040/neutrophils-from-both-susceptible-and-resistant-mice-efficiently-kill-opsonized-listeria-monocytogenes
#13
Michelle G Pitts, Travis A Combs, Sarah E F D'Orazio
Inbred mouse strains differ in their susceptibility to infection with the facultative intracellular bacterium Listeria monocytogenes, largely due to delayed or deficient innate immune responses. Previous antibody depletion studies suggested that neutrophils (PMN) were particularly important for clearance in the liver, but the ability of PMN from susceptible and resistant mice to directly kill L. monocytogenes has not been examined. In this study, we showed that PMN infiltrated the livers of BALB/c/By/J (BALB/c) and C57BL/6 (B6) mice in similar numbers and both cell types readily migrated towards leukotriene B4 in an in vitro chemotaxis assay...
February 5, 2018: Infection and Immunity
https://www.readbyqxmd.com/read/29425229/schistosoma-mansoni-smki-1-serine-protease-inhibitor-binds-to-elastase-and-impairs-neutrophil-function-and-inflammation
#14
Suellen B Morais, Barbara C Figueiredo, Natan R G Assis, Debora M Alvarenga, Mariana T Q de Magalhães, Rafaela S Ferreira, Angélica T Vieira, Gustavo B Menezes, Sergio C Oliveira
Protease inhibitors have important function during homeostasis, inflammation and tissue injury. In this study, we described the role of Schistosoma mansoni SmKI-1 serine protease inhibitor in parasite development and as a molecule capable of regulating different models of inflammatory diseases. First, we determine that recombinant (r) SmKI-1 and its Kunitz domain but not the C-terminal region possess inhibitory activity against trypsin and neutrophil elastase (NE). To better understand the molecular basis of NE inhibition by SmKI-1, molecular docking studies were also conducted...
February 9, 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29420582/ethyl-pyruvate-ameliorates-hepatic-injury-following-blunt-chest-trauma-and-hemorrhagic-shock-by-reducing-local-inflammation-nf-kappab-activation-and-hmgb1-release
#15
Nils Wagner, Scott Dieteren, Niklas Franz, Kernt Köhler, Katharina Mörs, Luka Nicin, Julia Schmidt, Mario Perl, Ingo Marzi, Borna Relja
BACKGROUND: The treatment of patients with multiple trauma including blunt chest/thoracic trauma (TxT) and hemorrhagic shock (H) is still challenging. Numerous studies show detrimental consequences of TxT and HS resulting in strong inflammatory changes, organ injury and mortality. Additionally, the reperfusion (R) phase plays a key role in triggering inflammation and worsening outcome. Ethyl pyruvate (EP), a stable lipophilic ester, has anti-inflammatory properties. Here, the influence of EP on the inflammatory reaction and liver injury in a double hit model of TxT and H/R in rats was explored...
2018: PloS One
https://www.readbyqxmd.com/read/29416061/the-lymphocyte-to-monocyte-ratio-is-a-superior-predictor-of-overall-survival-compared-to-established-biomarkers-in-hcc-patients-undergoing-liver-resection
#16
Yu-Ting Yang, Jing-Hang Jiang, Hao-Jie Yang, Zhi-Jun Wu, Ze-Min Xiao, Bang-De Xiang
The aim of this study was to investigate the prognostic value of the lymphocyte-to-monocyte ratio (LMR) in patients undergoing hepatectomy and to compare it to established biomarkers including the neutrophil-to-lymphocyte ratio (NLR) and platelet-to-lymphocyte ratio (PLR). Medical records were retrospectively analyzed for 652 HCC patients undergoing hepatectomy at the Affiliated Tumor Hospital of Guangxi Medical University and the First People's Hospital of Changde between April 2004 to April 2012. The correlation between the LMR and clinical variables were analyzed in Kaplan-Meier log-rank survival analysis and then multivariate Cox regression models trying to find relation with disease-free survival (DFS) and overall survival (OS)...
February 7, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29414663/implication-of-increased-serum-stromal-cell-derived-factor-1-for-primary-biliary-cholangitis
#17
Zaixing Yang, Yan Liang, Feng Lin, Zhencheng Zhang, Wanwan Luo, Yuting Zhang, Renqian Zhong
BACKGROUND: Stromal cell-derived factor-1 (SDF-1), also called chemokine (C-X-C motif) ligand 12 (CXCL12), as a chemokine for premature B cells, T cells and monocytes, is detected in liver, pancreas, spleen and heart. However, its diagnostic value for primary biliary cholangitis (PBC) as well as the association of SDF-1 with inflammatory and fibrotic progression is unclear. The aim of this study was to determine serum stromal cell-derived factor-1 (SDF-1) level and to explore its diagnostic value for primary biliary cholangitis (PBC) as well as the association of SDF-1 with inflammatory and fibrotic progression of PBC...
February 2, 2018: International Immunopharmacology
https://www.readbyqxmd.com/read/29413114/variations-in-serum-concentrations-of-c-reactive-protein-ceruloplasmin-lactoferrin-and-myeloperoxidase-and-their-interactions-during-normal-human-pregnancy-and-postpartum-period
#18
Ewa Skarżyńska, Hanna Zborowska, Artur J Jakimiuk, Maria Karlińska, Barbara Lisowska-Myjak
BACKGROUND: Serum proteins may provide information about homeostasis of redox status and inflammatory processes also during pregnancy. The aim of the study was to assess the dynamics of changes in serum concentrations of C-reactive protein (CRP), ceruloplasmin (CP), lactoferrin (LF) and myeloperoxidase (MPO) and their interactions during normal pregnancy and the postpartum period. METHODS: The concentrations of proteins were measured in serum (n=113) from pregnant in consecutive trimesters and in postpartum period (n=28) and in non-pregnant women (n=17), using immunoturbidimetric assays (CRP, CP) and ELISA Kits (LF, MPO)...
March 2018: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/29410537/spheroid-cultured-human-umbilical-cord-derived-mesenchymal-stem-cells-attenuate-hepatic-ischemia-reperfusion-injury-in-rats
#19
Yi Sun, Yang Wang, Liang Zhou, Yizhou Zou, Gengwen Huang, Ge Gao, Shi Ting, Xiong Lei, Xiang Ding
Mesenchymal stem cell (MSC) transplantation is a promising treatment for ischemia-reperfusion injury (IRI). However, its effects on hepatic IRI were not consistent in the previous studies. 3D spheroid-cultured MSCs enhance their production of trophic and anti-inflammatory properties, but their effects on hepatic IRI remain unclear. In this study, we compared the 3D spheroid-cultured human umbilical derived MSCs (3D UC-MSCs) with 2D-cultured UC-MSCs (2D UC-MSCs) on treating hepatic IRI. The RNA sequencing data showed that suppression of cell mitosis, response to hypoxia, inflammation, and angiogenesis were the top genetic changes in 3D UC-MSCs compared with 2D UC-MSCs...
February 6, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29409050/shp-deficiency-increases-inflammatory-liver-injury-through-cxcl2-driven-neutrophil-recruitment-in-mice
#20
Jung-Ran Noh, Yong-Hoon Kim, Don-Kyu Kim, Jung Hwan Hwang, Kyoung-Shim Kim, Dong-Hee Choi, Seon-Jin Lee, Hee Gu Lee, Tae Geol Lee, Hong-Lei Weng, Steven Dooley, Hueng-Sik Choi, Chul-Ho Lee
Although detailed pathophysiological mechanisms of fulminant hepatitis remain elusive, immune cell recruitment with excessive cytokine production is a well-recognized hallmark of the disease. We determined the function of orphan nuclear receptor small heterodimer partner (SHP) in concanavalin A (ConA)-induced hepatitis model. Male C57BL/6J mice were injected intravenously with either a lethal dose (25 mg/kg) or a sub-lethal dose (15 mg/kg) of ConA. For the C-X-C motif chemokine ligand (CXCL) 2 neutralization study, mice were intravenously administered anti-mouse CXCL2 antibody (100 μg/mouse)...
February 2, 2018: Toxicological Sciences: An Official Journal of the Society of Toxicology
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