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Leukocyte migration

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https://www.readbyqxmd.com/read/28344752/involvement-of-cbl-b-mediated-macrophage-inactivation-in-insulin-resistance
#1
REVIEW
Tomoki Abe, Katsuya Hirasaka, Takeshi Nikawa
Aging and overnutrition cause obesity in rodents and humans. It is well-known that obesity causes various diseases by producing insulin resistance (IR). Macrophages infiltrate the adipose tissue (AT) of obese individuals and cause chronic low-level inflammation associated with IR. Macrophage infiltration is regulated by the chemokines that are released from hypertrophied adipocytes and the immune cells in AT. Saturated fatty acids are recognized by toll-like receptor 4 (TLR4) and induce inflammatory responses in AT macrophages (ATMs)...
March 15, 2017: World Journal of Diabetes
https://www.readbyqxmd.com/read/28344579/reslizumab-and-eosinophilic-asthma-one-step-closer-to-precision-medicine
#2
REVIEW
Gilda Varricchi, Gianenrico Senna, Stefania Loffredo, Diego Bagnasco, Matteo Ferrando, Giorgio Walter Canonica
Human eosinophils represent approximately 1% of peripheral blood leukocytes. However, these cells have the propensity to leave the blood stream and migrate into inflamed tissues. Eosinophilic inflammation is present in a significant proportion of patients with severe asthma. Asthma is a chronic inflammatory disorder that affects more than 315 million people worldwide, with 10% having severe uncontrolled disease. Although the majority of patients can be efficiently treated, severe asthmatics continue to be uncontrolled and are at risk of exacerbations and even death...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28337115/hplc-dad-analysis-antinociceptive-and-anti-inflammatory-properties-of-the-ethanolic-extract-of-hyptis-umbrosa-in-mice
#3
Klécia S Dos Anjos, Heitor G Araújo-Filho, Marcelo C Duarte, Vicente C O Costa, Josean F Tavares, Marcelo S Silva, Jackson R G S Almeida, Nathália A C Souza, Larissa A Rolim, Irwin R A Menezes, Henrique D M Coutinho, Jullyana S S Quintans, Lucindo J Quintans-Júnior
Hyptis umbrosa (syn. Mesosphaerum sidifolium) (Lamiaceae Family) has been used to treat several conditions such as gastrointestinal disorders, skin infections, nasal congestion, fever and cramps. The objective of this study was to evaluate the chemical composition, analgesic and anti-inflammatory profiles of ethanol extract from leaves of Hyptis umbrosa (EEB). HPLC-DAD was used to determine the fingerprint chromatogram of the extract. Male Swiss mice were orally pretreated with EEB (100, 200 or 400 mg/kg; 60 min before initiating algesic stimulation) and antinociceptive activity was assessed using the acetic acid-induced writhing model, formalin test and hyperalgesia induced by glutamate or capsaicin...
2017: EXCLI journal
https://www.readbyqxmd.com/read/28335408/n-hexane-insoluble-fraction-of-plantago-lanceolata-exerts-anti-inflammatory-activity-in-mice-by-inhibiting-cyclooxygenase-2-and-reducing-chemokines-levels
#4
Nanang Fakhrudin, Eny Dwi Astuti, Rini Sulistyawati, Djoko Santosa, Ratna Susandarini, Arief Nurrochmad, Subagus Wahyuono
Inflammation is involved in the progression of many disorders, such as tumors, arthritis, gastritis, and atherosclerosis. Thus, the development of new agents targeting inflammation is still challenging. Medicinal plants have been used traditionally to treat various diseases including inflammation. A previous study has indicated that dichloromethane extract of P. lanceolata leaves exerts anti-inflammatory activity in an in vitro model. Here, we examined the in vivo anti-inflammatory activities of a n-hexane insoluble fraction of P...
March 13, 2017: Scientia Pharmaceutica
https://www.readbyqxmd.com/read/28334045/plasma-soluble-l-selectin-in-medicated-patients-with-schizophrenia-and-healthy-controls
#5
Satyajit Mohite, Fang Yang, Pooja A Amin, Giovana Zunta-Soares, Gabriela D Colpo, Laura Stertz, Ajaykumar N Sharma, Gabriel R Fries, Consuelo Walss-Bass, Jair C Soares, Olaoluwa O Okusaga
Immune dysfunction has been implicated in the pathophysiology of schizophrenia. Leukocyte migration to the site of inflammation is a fundamental step of immune response which involves P-, E-, and L-selectins. Elevated selectin levels have been reported in un-medicated first-episode patients with schizophrenia but not in medicated patients with multi-episode schizophrenia. We measured fasting plasma soluble P-, E-, and L-selectin in 39 medicated patients with multi-episode schizophrenia and 19 healthy controls...
2017: PloS One
https://www.readbyqxmd.com/read/28333143/molecular-insights-of-gas6-tam-in-cancer-development-and-therapy
#6
REVIEW
Guiling Wu, Zhiqiang Ma, Wei Hu, Dongjin Wang, Bing Gong, Chongxi Fan, Shuai Jiang, Tian Li, Jianyuan Gao, Yang Yang
Since growth arrest-specific gene 6 (Gas6) was discovered in 1988, numerous studies have highlighted the role of the Gas6 protein and its receptors Tyro3, Axl and Mer (collectively referred to as TAM), in proliferation, apoptosis, efferocytosis, leukocyte migration, sequestration and platelet aggregation. Gas6 has a critical role in the development of multiple types of cancers, including pancreatic, prostate, oral, ovarian and renal cancers. Acute myelocytic leukaemia (AML) is a Gas6-dependent cancer, and Gas6 expression predicts poor prognosis in AML...
March 23, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28330723/standardization-and-anti-inflammatory-activity-of-aqueous-extract-of-psittacanthus-plagiophyllus-eichl-loranthaceae
#7
Adrielle Nara Serra Bezerra, Laís Tatiele Massing, Ricardo Bezerra de Oliveira, Rosa Helena Veras Mourão
ETHNOPHARMACOLOGICAL IMPORTANCE: The hemiparasitic species Psittacanthus plagiophyllus Eichl. (Loranthaceae), also known as erva de passarinho, is used in folk medicine in the Santarém region in the state of Pará, Brazil, to treat gastritis and a variety of inflammatory disorders. In view of the lack of pharmacological studies on this species in the literature and the fact that it is used constantly by the local population, this study sought to standardize the extract of the leaves of P...
March 19, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28322746/truncation-of-cxcl12-by-cd26-reduces-its-cxc-chemokine-receptor-4-and-atypical-chemokine-receptor-3-dependent-activity-on-endothelial-cells-and-lymphocytes
#8
Rik Janssens, Anneleen Mortier, Daiane Boff, Pieter Ruytinx, Mieke Gouwy, Bo Vantilt, Olav Larsen, Viktorija Daugvilaite, Mette M Rosenkilde, Marc Parmentier, Sam Noppen, Sandra Liekens, Jo Van Damme, Sofie Struyf, Mauro M Teixeira, Flávio A Amaral, Paul Proost
The chemokine CXCL12 or stromal cell-derived factor 1/SDF-1 attracts hematopoietic progenitor cells and mature leukocytes through the G protein-coupled CXC chemokine receptor 4 (CXCR4). In addition, it interacts with atypical chemokine receptor 3 (ACKR3 or CXCR7) and glycosaminoglycans. CXCL12 activity is regulated through posttranslational cleavage by CD26/dipeptidyl peptidase 4 that removes two N-terminal amino acids. CD26-truncated CXCL12 does not induce calcium signaling or chemotaxis of mononuclear cells...
March 16, 2017: Biochemical Pharmacology
https://www.readbyqxmd.com/read/28320610/carbon-monoxide-releasing-molecule-401-suppresses-polymorphonuclear-leukocyte-migratory-potential-by-modulating-f-actin-dynamics
#9
Ken Inoue, Eric K Patterson, Alfredo Capretta, Abdel R Lawendy, Douglas D Fraser, Gediminas Cepinskas
Carbon monoxide-releasing molecules (CORMs) suppress inflammation by reducing polymorphonuclear leukocyte (PMN) recruitment to the affected organs. We investigated modulation of PMN-endothelial cell adhesive interactions by water-soluble CORM-401 using an experimental model of endotoxemia in vitro. Human umbilical vein endothelial cells grown on laminar-flow perfusion channels were stimulated with 1 μg/mL lipopolysaccharide for 6 hours and perfused with 100 μmol/L CORM-401 (or inactive compound iCORM-401)-pretreated PMN for 5 minutes in the presence of 1...
March 17, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28319586/short-term-exercise-training-alters-leukocyte-chemokine-receptors-in-obese-adults
#10
Julianne C Barry, Svetlana Simtchouk, Cody Durrer, Mary E Jung, Jonathan P Little
Obesity is characterized by chronic low-grade inflammation driven by activation and tissue infiltration of circulating leukocytes. Although exercise has anti-inflammatory effects, the impact of exercise on mediators of leukocyte migration is unclear. PURPOSE: To determine the impact of high intensity interval training (HIIT) versus moderate intensity continuous training (MICT), in the absence of weight/fat loss, on circulating chemokines and leukocyte chemokine receptors. METHODS: Thirty-seven inactive obese adults were randomized to two weeks (10 sessions) of HIIT or MICT with fasting blood samples collected before and after training...
March 18, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28316123/the-msc-adhesion-cascade-insights-into-homing-and-transendothelial-migration
#11
Franziska Nitzsche, Claudia Müller, Barbara Lukomska, Jukka Jolkkonen, Alexander Deten, Johannes Boltze
Mesenchymal stem cells (MSC) are promising candidates for adult cell therapies in regenerative medicine. To fully exert their potential, efficient homing and migration towards lesion sites plays an important role. Local transplantation deposits MSC in spatial proximity to the lesion, but often requires invasive procedures. Systemic administration routes are favored, but require the targeted extravasation of the circulating MSC at the site of injury. Transplanted MSC can indeed leave the blood flow and transmigrate through the endothelial barrier, and reach the lesion site...
March 18, 2017: Stem Cells
https://www.readbyqxmd.com/read/28300869/e-selectin-inhibition-with-gmi-1271-decreases-venous-thrombosis-without-profoundly-affecting-tail-vein-bleeding-in-a-mouse-model
#12
Dorian L Culmer, Misha L Dunbar, Angela E Hawley, Suman Sood, Robert E Sigler, Peter K Henke, Thomas W Wakefield, John L Magnani, Daniel D Myers
Selectins, such as E-selectin (CD62E), function in venous thrombosis by binding and activating immune cells to initiate the coagulation cascade. GMI-1271 is a small molecule antagonist that inhibits E-selectin activity. Here we determine whether inhibition of E-selectin is sufficient to decrease acute venous thrombosis and associated inflammatory events in both prophylactic and treatment protocols without significantly affecting haemostasis. Male C57BL/6 mice underwent surgery for experimental thrombosis induction and were harvested at peak thrombus formation in our animal model, two days post induction...
March 16, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28298336/moonlighting-glycolytic-protein-glyceraldehyde-3-phosphate-dehydrogenase-gapdh-an-evolutionarily-conserved-plasminogen-receptor-on-mammalian-cells
#13
Anoop Singh Chauhan, Manoj Kumar, Surbhi Chaudhary, Anil Patidar, Asmita Dhiman, Navdeep Sheokand, Himanshu Malhotra, Chaaya Iyengar Raje, Manoj Raje
Prokaryotic pathogens establish infection in mammals by capturing the proteolytic enzyme plasminogen (Plg) onto their surface to digest host extracellular matrix (ECM). One of the bacterial surface Plg receptors is the multifunctional glycolytic enzyme glyceraldehyde-3-phosphate dehydrogenase (GAPDH). In a defensive response, the host mounts an inflammatory response, which involves infiltration of leukocytes to sites of inflammation. This requires macrophage exit from the blood and migration across basement membranes, a phenomenon dependent on proteolytic remodeling of the ECM utilizing Plg...
March 15, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28294064/knockdown-of-c-c-chemokine-receptor-5-ccr5-is-protective-against-cerebral-ischemia-and-reperfusion-injury
#14
Edna Constanza Gómez Victoria, Eliana Cristina de Brito Toscano, Ana Clara de Sousa Cardoso, Daniele Gonçalves da Silva, Aline Silva de Miranda, Lucíola da Silva Barcelos, Michelle Adriane Sugimoto, Lirlândia Pires Sousa, Isabel Vieira de Assis Lima, Antônio Carlos Pinheiro de Oliveira, Fátima Brant, Fabiana Simão Machado, Mauro Martins Teixeira, Antônio Lúcio Teixeira, Milene Alvarenga Rachid
BACKGROUND: Stroke is the second leading cause of death and a major cause of disability of adults worldwide. Inflammatory processes are known to contribute to the pathophysiology of cerebral ischemia, especially following reperfusion. Chemokines and their receptors are involved in migration of leukocytes and have been implicated in pathogenesis of ischemic stroke. OBJECTIVE: In the present study, we investigated the effects of C-C chemokine receptor type 5 (CCR5) deficiency on neurological outcome, brain damage and expression of pro-inflammatory chemokines: chemokine (C-X-C motif) ligand 1 (CXCL1), chemokine (CC motif) ligand 3 (CCL3) and chemokine (C-C motif) ligand 5 (CCL5), and the brain-derived neurotrophic factor (BDNF)...
March 13, 2017: Current Neurovascular Research
https://www.readbyqxmd.com/read/28290520/ccl2-nitration-is-a-negative-regulator-of-chemokine-mediated-inflammation
#15
Catriona E Barker, Sarah Thompson, Graeme O'Boyle, Hugues Lortat-Jacob, Neil S Sheerin, Simi Ali, John A Kirby
Chemokines promote leukocyte recruitment during inflammation. The oxidative burst is an important effector mechanism, this leads to the generation of reactive nitrogen species (RNS), including peroxynitrite (ONOO). The current study was performed to determine the potential for nitration to alter the chemical and biological properties of the prototypical CC chemokine, CCL2. Immunofluorescence was performed to assess the presence of RNS in kidney biopsies. Co-localisation was observed between RNS-modified tyrosine residues and the chemokine CCL2 in diseased kidneys...
March 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28290293/comparative-proteomic-analysis-of-milk-derived-exosomes-in-human-and-bovine-colostrum-and-mature-milk-samples-by-itraq-coupled-lc-ms-ms
#16
Mei Yang, Dahe Song, Xueyan Cao, Rina Wu, Biao Liu, Wenhui Ye, Junrui Wu, Xiqing Yue
Exosomes are membranous vesicles found in biological fluids with important functions. However, milk-derived exosome proteins from humans and bovines have not been studied in detail. The advanced iTRAQ proteomic approach was used to analyze milk-derived exosomes in human and bovine colostrum and mature milk samples. A total of 920 milk exosome proteins were identified and quantified. Among these, 575 differentially expressed exosome proteins (P<0.05) were found. Multivariate analysis, gene ontology (GO) annotation and the KEGG pathway were used to interpret the identified proteins...
February 2017: Food Research International
https://www.readbyqxmd.com/read/28287161/angiopoietin-like-4-mediates-colonic-inflammation-by-regulating-chemokine-transcript-stability-via-tristetraprolin
#17
Terri Phua, Ming Keat Sng, Eddie Han Pin Tan, Dickson Shao Liang Chee, Yinliang Li, Jonathan Wei Kiat Wee, Ziqiang Teo, Jeremy Soon Kiat Chan, Maegan Miang Kee Lim, Chek Kun Tan, Pengcheng Zhu, Velmurugesan Arulampalam, Nguan Soon Tan
Many gastrointestinal diseases exhibit a protracted and aggravated inflammatory response that can lead to hypercytokinaemia, culminating in extensive tissue damage. Recently, angiopoietin-like 4 (ANGPTL4) has been implicated in many inflammation-associated diseases. However, how ANGPTL4 regulates colonic inflammation remains unclear. Herein, we show that ANGPTL4 deficiency in mice (ANGPTL4(-/-)) exacerbated colonic inflammation induced by dextran sulfate sodium (DSS) or stearic acid. Microbiota was similar between the two genotypes prior DSS challenge...
March 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28285194/islet-encapsulation-with-polyphenol-coatings-decreases-pro-inflammatory-chemokine-synthesis-and-t-cell-trafficking
#18
Dana Pham-Hua, Lindsey E Padgett, Bing Xue, Brian Anderson, Michael Zeiger, Jessie M Barra, Maigen Bethea, Chad S Hunter, Veronika Kozlovskaya, Eugenia Kharlampieva, Hubert M Tse
Type 1 Diabetes (T1D) is a chronic pro-inflammatory autoimmune disease consisting of islet-infiltrating leukocytes involved in pancreatic β-cell lysis. One promising treatment for T1D is islet transplantation; however, clinical application is constrained due to limited islet availability, adverse effects of immunosuppressants, and declining graft survival. Islet encapsulation may provide an immunoprotective barrier to preserve islet function and prevent immune-mediated rejection after transplantation. We previously demonstrated that a novel cytoprotective nanothin multilayer coating for islet encapsulation consisting of tannic acid (TA), an immunomodulatory antioxidant, and poly(N-vinylpyrrolidone) (PVPON), was efficacious in dampening in vitro immune responses involved in transplant rejection and preserving in vitro islet function...
March 6, 2017: Biomaterials
https://www.readbyqxmd.com/read/28284342/insights-into-ccl21-s-roles-in-immunosurveillance-and-immunotherapy-for-gliomas
#19
REVIEW
Thien Nguyen, Carlito Lagman, Lawrance K Chung, Cheng Hao Jacky Chen, Jessica Poon, Vera Ong, Brittany L Voth, Isaac Yang
Chemokine (C-C) motif ligand 21 (CCL21) is involved in immunosurveillance and has recently garnered the attention of neuro-oncologists and neuroscientists. CCL21 contains an extended C-terminus, which increases binding to lymphatic glycosaminoglycans and provides a mechanism for cell trafficking by forming a stationary chemokine concentration gradient that allows cell migration via haptotaxis. CCL21 is expressed by endothelial cells of the blood-brain barrier in physiologic and pathologic conditions. CCL21 has also been implicated in leukocyte extravasation into the central nervous system...
April 15, 2017: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/28282394/transcriptomal-profiling-of-bovine-ovarian-granulosa-and-theca-interna-cells-in-primary-culture-in-comparison-with-their-in-vivo-counterparts
#20
Nicholas Hatzirodos, Claire Glister, Katja Hummitzsch, Helen F Irving-Rodgers, Philip G Knight, Raymond J Rodgers
In vitro culture of ovarian granulosa cells and theca cells has been very important for our understanding of their function and regulation. One of the most eagerly sought attributes of cell culture is the use of chemically-defined conditions. However, even under such in vitro conditions cell behaviour could differ from the in vivo situation because of differences in oxygen tension, nutrients, adhesion matrix and other factors. To examine this further we compared the transcriptomes of both granulosa cells and cells from the theca interna that were cultured in what are arguably the best in vitro conditions for maintaining the 'follicular' phenotypes of both tissue types, as displayed by their respective freshly-isolated counterparts...
2017: PloS One
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