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MFG-E8

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https://www.readbyqxmd.com/read/28398652/brucella-abortus-activated-microglia-induce-neuronal-death-through-primary-phagocytosis
#1
Ana M Rodríguez, M Victoria Delpino, M Cruz Miraglia, Miriam M Costa Franco, Paula Barrionuevo, Vida A Dennis, Sergio C Oliveira, Guillermo H Giambartolomei
Inflammation has long been implicated as a contributor to pathogenesis in neurobrucellosis. Many of the associated neurocognitive symptoms of neurobrucellosis may be the result of neuronal dysfunction resulting from the inflammatory response induced by Brucella abortus infection in the central nervous system. In this manuscript, we describe an immune mechanism for inflammatory activation of microglia that leads to neuronal death upon B. abortus infection. B. abortus was unable to infect or harm primary cultures of mouse neurons...
April 11, 2017: Glia
https://www.readbyqxmd.com/read/28343695/treatment-with-milk-fat-globule-epidermal-growth-factor-factor-8-mfg-e8-reduces-inflammation-and-lung-injury-in-neonatal-sepsis
#2
Laura W Hansen, Weng Lang Yang, Alexandra C Bolognese, Asha Jacob, Tracy Chen, Jose M Prince, Jeffrey M Nicastro, Gene F Coppa, Ping Wang
BACKGROUND: Sepsis remains one of the leading causes of infant death worldwide. It is characterized by uncontrolled inflammatory responses due to proven bacterial infection. Despite improvement in supportive care and the availability of effective antibiotics, no specific therapy targeting the dysregulated inflammatory response is available for neonatal sepsis. Milk fat globule epidermal growth factor-factor 8 (MFG-E8) is a secretory glycoprotein abundantly present in human milk. MFG-E8 suppresses the systemic inflammatory responses in adult murine injury models by improving the clearance of dying cells...
March 23, 2017: Surgery
https://www.readbyqxmd.com/read/28302404/mesenchymal-stem-cells-derived-mfg-e8-accelerates-diabetic-cutaneous-wound-healing
#3
Akihiko Uchiyama, Sei-Ichiro Motegi, Akiko Sekiguchi, Chisako Fujiwara, Buddhini Perera, Sachiko Ogino, Yoko Yokoyama, Osamu Ishikawa
BACKGROUND: Diabetic wounds are intractable due to complex factors, such as the inhibition of angiogenesis, dysfunction of phagocytosis by macrophages and abnormal inflammatory responses. It is recognized that mesenchymal stem cells (MSCs) promote wound healing in diabetic mice. We previously demonstrated that MSCs produce large amounts of MFG-E8. OBJECT: The objective was to ascertain the role of MSCs-derived MFG-E8 in murine diabetic wounds. METHODS: MFG-E8 WT/KO MSCs or rMFG-E8 were subcutaneously injected around the wound in diabetic db/db mice, and wound areas were analyzed...
March 6, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28296340/lactadherin-is-a-candidate-oviduct-lewis-x-trisaccharide-receptor-on-porcine-spermatozoa
#4
E Silva, D Frost, L Li, N Bovin, D J Miller
A recent study has demonstrated that porcine spermatozoa recognize with high affinity carbohydrate structures containing Lewis X motifs. Sperm adhesion to Lewis X is proposed to mediate sperm binding to the oviduct epithelium to form a reservoir. The objective of this study was to identify Lewis X-binding proteins from porcine spermatozoa as candidate receptors for oviduct glycans. To identify low-abundance proteins typically masked by proteins originating from seminal fluid, Lewis X candidate receptors were enriched from cauda epididymal boar spermatozoa...
March 15, 2017: Andrology
https://www.readbyqxmd.com/read/28266034/elevated-serum-mfg-e8-level-is-possibly-associated-with-the-presence-of-high-intensity-cerebral-lesions-on-magnetic-resonance-imaging-in-patients-with-systemic-lupus-erythematosus
#5
Chikako Kishi, Sei-Ichiro Motegi, Osamu Ishikawa
Human milk fat globule-EGF factor 8 (MFG-E8), also known as lactadherin, is a secreted glycoprotein that plays essential roles in the clearance of apoptotic cells and angiogenesis. It has been reported that serum MFG-E8 levels are higher in systemic lupus erythematosus (SLE) patients compared with in healthy controls; however, a previous study reported no correlation between serum MFG-E8 levels and SLE disease activity. The objective of this study was to assess serum MFG-E8 levels and their clinical associations in patients with SLE...
March 7, 2017: Journal of Dermatology
https://www.readbyqxmd.com/read/28207941/mfg-e8-inhibits-periodontitis-in-non-human-primates-and-its-gingival-crevicular-fluid-levels-can-differentiate-periodontal-health-from-disease-in-humans
#6
Tetsuhiro Kajikawa, Fatimah Meshikhes, Tomoki Maekawa, Evlambia Hajishengallis, Kavita B Hosur, Toshiharu Abe, Kevin Moss, Triantafyllos Chavakis, George Hajishengallis
AIM: We have previously shown that the secreted glycoprotein MFG-E8 has anti-inflammatory and anti-osteoclastogenic properties. Our objective was to investigate the potential of MFG-E8 as a diagnostic or therapeutic agent in periodontitis. MATERIALS AND METHODS: Periodontitis was induced in non-human primates (NHPs) by placing ligatures around posterior teeth on both halves of the mandible for a split-mouth design: one side was treated with MFG-E8-Fc and the other with Fc control...
February 16, 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/28195210/cigarette-smoke-attenuates-phagocytic-ability-of-macrophages-through-down-regulating-milk-fat-globule-egf-factor-8-mfg-e8-expressions
#7
Yueqin Wang, Guangwei Luo, Jie Chen, Rui Jiang, Jianhua Zhu, Na Hu, Wei Huang, Guilian Cheng, Min Jia, Bingtao Su, Nian Zhang, Tianpen Cui
Chronic obstructive pulmonary disease (COPD) is one of the most common inflammatory diseases resulting from habitual smoking. Impaired clearance of apoptotic cell by airway macrophages contributes to lung inflammation. Milk fat globule-EGF factor 8 (MFG-E8), as a link between apoptotic cells and phagocytes, facilitates clearance of apoptotic cells and attenuates inflammation. We sought to investigate altered expression and potential role of MFG-E8 in COPD. In this study, apoptosis was increased and the level of MFG-E8 was decreased while HMGB1 expression was increased in lung tissues of CS-exposed mice...
February 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28108420/neutrophil-derived-microparticles-increase-mortality-and-the-counter-inflammatory-response-in-a-murine-model-of-sepsis
#8
Bobby L Johnson, Emily F Midura, Priya S Prakash, Teresa C Rice, Natalia Kunz, Kathrin Kalies, Charles C Caldwell
Although advances in medical care have significantly improved sepsis survival, sepsis remains the leading cause of death in the ICU. This is likely due to a lack of complete understanding of the pathophysiologic mechanisms that lead to dysfunctional immunity. Neutrophil derived microparticles (NDMPs) have been shown to be the predominant microparticle present at infectious and inflamed foci in human models, however their effect on the immune response to inflammation and infection is sepsis has not been fully elucidated...
January 17, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28096298/mfg-e8-derived-peptide-attenuates-adhesion-and-migration-of-immune-cells-to-endothelial-cells
#9
Yohei Hirano, Weng-Lang Yang, Monowar Aziz, Fangming Zhang, Barbara Sherry, Ping Wang
Milk fat globule-epidermal growth factor-factor 8 (MFG-E8) plays an immunomodulatory role in inflammatory diseases. MFG-E8-derived short peptide (MSP68) greatly reduces neutrophil infiltration and injury in the lung during sepsis. In this study, we examined the effect of MSP68 on chemotaxis of various immune cells and its regulatory mechanism. Bone marrow-derived neutrophils (BMDNs) from C57BL/6 mice, human monocyte THP-1 cell line, and human T lymphocyte Jurkat cell line were used for adhesion and migration assays using a Transwell method in the presence of MSP68...
January 17, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28089751/reduced-serum-milk-fat-globule-epidermal-growth-factor-8-mfg-e8-concentrations-are-associated-with-an-increased-risk-of-microvascular-complications-in-patients-with-type-2-diabetes
#10
Guohua Sun, Juxiang Liu, Guanghao Xia, Lijuan Zhang, Yonghong Li, Zubang Zhou, Yaya Lv, Suhong Wei, Jing Liu, Jinxing Quan
BACKGROUND: The association between serum milk fat globule-epidermal growth factor 8 (MFG-E8) concentrations and vascular complications in T2DM remains unclear. METHODS: A total of 149 patients with T2DM were included. The serum concentrations of MFG-E8, glycosylated hemoglobin (HbA1c), and high-sensitivity C-reactive protein (hs-CRP) were measured. RESULTS: There was no significant difference in serum MFG-E8 concentrations between the T2DM group and the T2DM with subclinical atherosclerosis (AS) group (615...
March 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/28067023/elevated-serum-milk-fat-globule-epidermal-growth-factor-8-levels-in-type-2-diabetic-patients-are-suppressed-by-overweight-or-obese-status
#11
Yuanyuan Li, Wenzhuo Ran, Jiaqiang Zhang, Shi Chen, Yihang Li, Deng Luo, Chen Wang, Weiping Jia
Inflammation is the most important link between obesity and type 2 diabetes (T2D). Although milk fat globule-epidermal growth factor 8 (MFG-E8) is a key mediator in anti-inflammatory responses, its role in obesity and diabetes is not yet completely understood. We aimed to measure MFG-E8 serum levels and to explore the role of MFG-E8 in obesity and T2D. Fasting serum MFG-E8 levels were quantified by enzyme-linked immunosorbent assay for 168 individuals, whose oral glucose tolerance test was conducted, and levels of inflammatory factors, including tumor necrosis factor-α (TNF-α) and C-reactive protein, were measured...
February 2017: IUBMB Life
https://www.readbyqxmd.com/read/28035763/circulating-milk-fat-globule-epidermal-growth-factor-8-levels-are-increased-in-pregnancy-and-gestational-diabetes-mellitus
#12
Yuanyuan Li, Wenzhuo Ran, Jiaqiang Zhang, Shi Chen, Yihang Li, Deng Luo, Chen Wang, Weiping Jia
AIMS/INTRODUCTION: Milk fat globule-epidermal growth factor 8 (MFG-E8) is the key mediator in anti-inflammatory responses that facilitate phagocytosis of apoptotic cells and play an essential role in type 2 diabetes and pregnancy, both of which are under a low-grade inflammatory state. However, the action of MFG-E8 in gestational diabetes mellitus (GDM) is unclear. We measured for the first time plasma MFG-E8 levels in pregnancy and GDM, and elucidated possible relationships between its plasma levels and various metabolic parameters...
December 30, 2016: Journal of Diabetes Investigation
https://www.readbyqxmd.com/read/27918308/cardiac-myofibroblast-engulfment-of-dead-cells-facilitates-recovery-after-myocardial-infarction
#13
Michio Nakaya, Kenji Watari, Mitsuru Tajima, Takeo Nakaya, Shoichi Matsuda, Hiroki Ohara, Hiroaki Nishihara, Hiroshi Yamaguchi, Akiko Hashimoto, Mitsuho Nishida, Akiomi Nagasaka, Yuma Horii, Hiroki Ono, Gentaro Iribe, Ryuji Inoue, Makoto Tsuda, Kazuhide Inoue, Akira Tanaka, Masahiko Kuroda, Shigekazu Nagata, Hitoshi Kurose
Myocardial infarction (MI) results in the generation of dead cells in the infarcted area. These cells are swiftly removed by phagocytes to minimize inflammation and limit expansion of the damaged area. However, the types of cells and molecules responsible for the engulfment of dead cells in the infarcted area remain largely unknown. In this study, we demonstrated that cardiac myofibroblasts, which execute tissue fibrosis by producing extracellular matrix proteins, efficiently engulf dead cells. Furthermore, we identified a population of cardiac myofibroblasts that appears in the heart after MI in humans and mice...
January 3, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/27866791/mesenchymal-stem-cells-the-roles-and-functions-in-cutaneous-wound-healing-and-tumor-growth
#14
REVIEW
Sei-Ichiro Motegi, Osamu Ishikawa
Mesenchymal stem cells (MSCs) are bone marrow-derived non-hematopoietic progenitor cells. MSCs are able to differentiate into various types of cells, including chondrocytes, adipocytes, osteocytes, myocytes, endothelial cells, and keratinocytes. There is increasing evidence that MSCs might be located external to the vasculature, and that perivascular cells in the skin, generally called as "pericytes", might include MSCs. It has been suggested that MSCs localized around blood vessels might migrate into wounds and contribute to the restoration of injured tissues...
November 11, 2016: Journal of Dermatological Science
https://www.readbyqxmd.com/read/27844286/mfg-e8-selectively-inhibited-a%C3%AE-induced-microglial-m1-polarization-via-nf-%C3%AE%C2%BAb-and-pi3k-akt-pathways
#15
Xiaolei Shi, Xiaoying Cai, Wei Di, Jie Li, Xiaotian Xu, Aiwu Zhang, Weiwei Qi, Zhiming Zhou, Yannan Fang
Activated microglia are classified into two specific states: classically activated (M1) and alternatively activated (M2) subtypes. It is believed that the polarization of M1/M2 phenotype plays an important role in Alzheimer's disease (AD). However, the mechanisms regulating this process remain unclear. Thus, we addressed this question focusing on milk fat globule epidermal growth factor 8 (MFG-E8). MFG-E8 is a unique protein which can bind to microglia and regulate its inflammatory responses. It is speculated that it might play a role in the balance of microglial polarization...
November 14, 2016: Molecular Neurobiology
https://www.readbyqxmd.com/read/27768123/milk-fat-globule-egf-factor-8-suppresses-the-aberrant-immune-response-of-systemic-lupus-erythematosus-derived-neutrophils-and-associated-tissue-damage
#16
Wei Huang, Jiyuan Wu, Huiqin Yang, Yin Xiong, Rui Jiang, Tianpen Cui, Duyun Ye
Abnormal features of the systemic lupus erythematosus (SLE)-derived neutrophils, promoted aberrant immune response, have inspired new studies of the induction of autoimmunity and the development of organ damage in SLE. In this study, we explore the effect of milk fat globule-EGF factor 8 (MFG-E8) on the aberrant nitrification features in pristane-induced lupus. SLE patients and mice with pristane-induced lupus develop autoantibodies associated with MFG-E8 overproduction. However, the deletion of MFG-E8 leads to uncontrolled early pulmonary and peritoneal inflammation and tissue damage in mice with pristane-induced lupus...
February 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/27579162/role-of-milk-fat-globule-epidermal-growth-factor-8-in-osteoimmunology
#17
REVIEW
Kathrin Sinningen, Sylvia Thiele, Lorenz C Hofbauer, Martina Rauner
Milk fat globule-epidermal growth factor 8 (MFG-E8) is a glycoprotein that is abundantly expressed in various tissues and has a pivotal role in the phagocytic clearance of apoptotic cells. However, MFG-E8 has also gained significant attention because of its wide range of functions in autoimmunity, inflammation and tissue homeostasis. More recently, MFG-E8 has been identified as a critical regulator of bone homeostasis, being expressed in both, osteoblasts and osteoclasts. In addition, it was shown that MFG-E8 fulfils an active role in modulating inflammatory processes, suggesting an anti-inflammatory role of MFG-E8 and proposing it as a novel therapeutic target for inflammatory diseases...
2016: BoneKEy Reports
https://www.readbyqxmd.com/read/27538453/spherical-nucleic-acid-targeting-microrna-99b-enhances-intestinal-mfg-e8-gene-expression-and-restores-enterocyte-migration-in-lipopolysaccharide-induced-septic-mice
#18
Xiao Wang, Liangliang Hao, Heng-Fu Bu, Alexander W Scott, Ke Tian, Fangyi Liu, Isabelle G De Plaen, Yulan Liu, Chad A Mirkin, Xiao-Di Tan
Milk fat globule-EGF factor 8 (MFG-E8) maintains the intestinal homeostasis by enhancing enterocyte migration and attenuating inflammation. We previously reported that sepsis is associated with down-regulation of intestinal MFG-E8 and impairment of enterocyte migration. Here, we showed that impairment of intestinal epithelial cell migration occurred in lipopolysaccharide (LPS)-induced septic mice. Treatment of RAW264.7 cells (a murine macrophage-like cell line) with LPS increased expression of miR-99b, a microRNA that is predicted to target mouse MFG-E8 3'UTR...
2016: Scientific Reports
https://www.readbyqxmd.com/read/27534552/osteopontin-in-spontaneous-germinal-centers-inhibits-apoptotic-cell-engulfment-and-promotes-anti-nuclear-antibody-production-in-lupus-prone-mice
#19
Keiko Sakamoto, Yuji Fukushima, Koyu Ito, Michiyuki Matsuda, Shigekazu Nagata, Nagahiro Minato, Masakazu Hattori
Disposal of apoptotic cells is important for tissue homeostasis. Defects in this process in immune tissues may lead to breakdown of self-tolerance against intracellular molecules, including nuclear components. Development of diverse anti-nuclear Abs (ANAs) is a hallmark of lupus, which may arise, in part, due to impaired apoptotic cell clearance. In this work, we demonstrate that spontaneous germinal centers (GCs) in lupus-prone mice contain significantly elevated levels of unengulfed apoptotic cells, which are otherwise swiftly engulfed by tingible body macrophages...
September 15, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27429513/functional-role-of-milk-fat-globule-epidermal-growth-factor-viii-in-macrophage-mediated-inflammatory-responses-and-inflammatory-autoimmune-diseases
#20
REVIEW
Young-Su Yi
Inflammation involves a series of complex biological processes mediated by innate immunity for host defense against pathogen infection. Chronic inflammation is considered to be one of the major causes of serious diseases, including a number of autoimmune/inflammatory diseases, cancers, cardiovascular diseases, and neurological diseases. Milk fat globule-epidermal growth factor 8 (MFG-E8) is a secreted protein found in vertebrates and was initially discovered as a critical component of the milk fat globule. Previously, a number of studies have reported that MFG-E8 contributes to various biological functions including the phagocytic removal of damaged and apoptotic cells from tissues, the induction of VEGF-mediated neovascularization, the maintenance of intestinal epithelial homeostasis, and the promotion of mucosal healing...
2016: Mediators of Inflammation
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