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macrophage and diabetes

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https://www.readbyqxmd.com/read/29655690/bg-4-a-novel-bioactive-peptide-from-momordica-charantia-inhibits-lipopolysaccharide-induced-inflammation-in-thp-1-human-macrophages
#1
Lynsey D Jones, Philipus Pangloli, Hari B Krishnan, Vermont P Dia
BACKGROUND: Bitter melon (Momordica charantia) is a commonly used food crop for management of a variety of diseases most notably for control of diabetes, a disease associated with aberrant inflammation. PURPOSE: To evaluate the anti-inflammatory property of BG-4, a novel bioactive peptide isolated from the seed of bitter melon. METHODS: Differentiated THP-1 human macrophages were pre-treated with BG-4 and stimulated with lipopolysaccharide...
March 15, 2018: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/29653264/helminth-infection-in-mice-improves-insulin-sensitivity-via-modulation-of-gut-microbiota-and-fatty-acid-metabolism
#2
Fernanda Pace, Bruno M Carvalho, Tamires M Zanotto, Andrey Santos, Dioze Guadagnini, Kelly L C Silva, Maria Carolina S Mendes, Guilherme Z Rocha, Silmara M Alegretti, Gustavo A Santos, Rodrigo R Catharino, Rita Paroni, Franco Folli, Mário José A Saad
Intestinal helminths are prevalent in individuals who live in rural areas of developing countries, where obesity, type 2 diabetes, and metabolic syndrome are rare. In the present study, we analyzed the modulation of the gut microbiota in mice infected with the helminth Strongyloides venezuelensis, and fed either a standard rodent chow diet or high-fat diet (HFD). To investigate the effects of the microbiota modulation on the metabolism, we analyzed the expression of tight-junction proteins present in the gut epithelium, inflammatory markers in the serum and tissue and quantified glucose tolerance and insulin sensitivity and resistance...
April 10, 2018: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/29651042/effects-of-scavenger-receptors-1-class-a-stimulation-on-macrophage-morphology-and-highly-modified-advanced-glycation-end-product-protein-phagocytosis
#3
Shinichi Hamasaki, Takuro Kobori, Yui Yamazaki, Atsuhiro Kitaura, Atsuko Niwa, Takashi Nishinaka, Masahiro Nishibori, Shuji Mori, Shinichi Nakao, Hideo Takahashi
Advanced glycation end-products (AGEs), which comprise non-enzymatically glycosylated proteins, lipids, and nucleic acid amino groups, play an important role in several diseases and aging processes including angiopathy, renal failure, diabetic complications, and neurodegenerative diseases. Among AGE-associated phenotypes, toxic AGEs, glyceraldehyde-derived AGE-2, and glycolaldehyde-derived AGE-3 are involved in the pathogenesis of diabetic complications. In addition, macrophages are reported to remove extracellular AGEs from tissues via scavenger receptors, leading to the progression of atherosclerosis...
April 12, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29649530/self-assembled-hyaluronic-acid-nanoparticles-implications-as-a-nanomedicine-for-treatment-of-type-2-diabetes
#4
Jun Gi Rho, Hwa Seung Han, Ji Hye Han, Hansang Lee, Van Quy Nguyen, Wang Hee Lee, Seunglee Kwon, Sungeun Heo, Juhwan Yoon, Han Ho Shin, Eun-Young Lee, Hoin Kang, Siyoung Yang, Eun Kyung Lee, Jae Hyung Park, Wook Kim
Self-assembled hyaluronic acid nanoparticles (HA-NPs) have been extensively investigated for biomedical and pharmaceutical applications owing to their biocompatibility and receptor-binding properties. Here, we report that an empty HA-NP itself not bearing any drug has therapeutic effects on adipose tissue inflammation and insulin resistance. HA-NPs inhibited not only the receptor-mediated internalization of low-molecular-weight (LMW) free HA but also LMW free HA-induced pro-inflammatory gene expression in mouse primary bone marrow-derived macrophages (BMDMs) isolated from wild-type mice, but not in CD44-null (CD44-/-) BMDMs...
April 9, 2018: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/29643724/resolvin-d1-promotes-corneal-epithelial-wound-healing-and-restoration-of-mechanical-sensation-in-diabetic-mice
#5
Zhenzhen Zhang, Xiaoli Hu, Xia Qi, Guohu Di, Yangyang Zhang, Qian Wang, Qingjun Zhou
Purpose: To investigate the effect and mechanism of proresolving lipid mediator resolvin D1 (RvD1) on the corneal epithelium and the restoration of mechanical sensation in diabetic mice. Methods: Type 1 diabetes was induced in mice with intraperitoneal streptozocin injections. The healthy and diabetic mice underwent removal of the central corneal epithelium, and then 100 ng/ml RvD1 or its formyl peptide receptor 2 (FPR2) antagonist WRW4 was used to treat the diabetic mice...
2018: Molecular Vision
https://www.readbyqxmd.com/read/29627577/role-of-neopterin-as-a-biochemical-marker-for-peripheral-neuropathy-in-pediatric-patients-with-type-1-diabetes-relation-to-nerve-conduction-studies
#6
Nancy Samir Elbarbary, Eman Abdel Rahman Ismail, Rana Ahmed El-Hilaly, Fatma Salama Ahmed
BACKGROUND: Neopterin, a marker of inflammation and cellular immune response, is elevated in conditions of T-cell or macrophages activation. Diabetic peripheral neuropathy (DPN) is associated with inflammatory/immune processes and therefore, we hypothesized that neopterin could be used as a marker of neuropathy in type 1 diabetes mellitus (T1DM). AIM: To measure neopterin levels in children and adolescents with T1DM and assess its possible relation to DPN and nerve conduction studies (NCS)...
April 5, 2018: International Immunopharmacology
https://www.readbyqxmd.com/read/29619884/cardioprotective-effect-of-%C3%AE-d-mannuronic-acid-m2000-as-a-novel-nsaid-on-gene-expression-of-oxldl-scavenger-receptors-in-the-experimental-diabetic-model
#7
Seyed Shahabeddin Mortazavi-Jahromi, Shahab Alizadeh, Mohammad Hassan Javanbakht, Abbas Mirshafiey
CONTEXT: The investigations have shown that patients with diabetes have the elevated levels of glucose and oxLDL. These two play an important role in increased expression levels of oxLDL scavenger receptors on the surface of macrophages and endothelial cells that leads to deposition of oxLDL and macrophages in vascular walls. OBJECTIVE: The present study intends to show the effects of β-d-mannuronic acid (M2000) on the expression profile of ox-LDL scavenger receptors (including SR-A, LOX-1, CD36, and CD68) in an experimental model of diabetes...
April 5, 2018: Immunopharmacology and Immunotoxicology
https://www.readbyqxmd.com/read/29605673/high-fat-diet-exacerbates-early-psoriatic-skin-inflammation-independent-of-obesity-saturated-fatty-acids-as-key-players
#8
Diana Herbert, Sandra Franz, Yulia Popkova, Ulf Anderegg, Jürgen Schiller, Katharina Schwede, Axel Lorz, Jan C Simon, Anja Saalbach
In obesity, hypertrophic adipocytes secret high amounts of adipocytokines resulting in low-grade inflammation- amplified by infiltrating pro-inflammatory macrophages, oxidative stress, hypoxia and lipolysis. It is known, that these chronic pro-inflammatory conditions support the development of type II diabetes and cardio vascular diseases, while mechanisms of obesity-related exacerbation of inflammatory skin disorders like psoriasis are unclear. In this study, we uncover nutritional saturated fatty acids (SFAs) as major risk factors for the amplification of skin inflammation, independent of obesity-related parameters, like fat mass extension, adipocytokines and glucose homeostasis...
March 29, 2018: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/29601566/-disturbances-of-calcium-metabolism-and-vitamin-d-supplementation-in-sarcoidosis-two-way-street
#9
REVIEW
Anna Kempisty, Anna Lewandowska, Jan Kuś
The role of vitamin D in the human body is not limited only to the regulation of calcium metabolism and secondary to the impact on bones. Recent studies have shown the influence of vitamin D level on muscles, on the risk of cancer, diabetes, hypertension and pulmonary diseases, including granulomatous diseases. Sarcoidosis is a granulomatous disease of unknown etiology. Hypercalcemia in the course of the disease occurs in up to 10% of cases in the consequence of autonomous overproduction of 1,25-dihydroxyvitamin D by macrophages of sarcoid granulomas...
March 27, 2018: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/29599778/discovering-macrophage-functions-using-in-vivo-optical-imaging-techniques
#10
REVIEW
Yue Li, Tzu-Ming Liu
Macrophages are an important component of host defense and inflammation and play a pivotal role in immune regulation, tissue remodeling, and metabolic regulation. Since macrophages are ubiquitous in human bodies and have versatile physiological functions, they are involved in virtually every disease, including cancer, diabetes, multiple sclerosis, and atherosclerosis. Molecular biological and histological methods have provided critical information on macrophage biology. However, many in vivo dynamic behaviors of macrophages are poorly understood and yet to be discovered...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29593735/involvement-of-macrophage-inflammatory-protein-1-family-members-in-the-development-of-diabetic-neuropathy-and-their-contribution-to-effectiveness-of-morphine
#11
Ewelina Rojewska, Magdalena Zychowska, Anna Piotrowska, Grzegorz Kreiner, Irena Nalepa, Joanna Mika
Current investigations underline the important roles of C-C motif ligands in the development of neuropathic pain; however, their participation in diabetic neuropathy is still undefined. Therefore, the goal of our study was to evaluate the participation of macrophage inflammatory protein-1 (MIP-1) family members (CCL3, CCL4, CCL9) in a streptozotocin (STZ)-induced mouse model of diabetic neuropathic pain. Single intrathecal administration of each MIP-1 member (10, 100, or 500 ng/5 μl) in naïve mice evoked hypersensitivity to mechanical (von Frey test) and thermal (cold plate test) stimuli...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29592858/immuno-modulatory-effect-of-local-rhegf-treatment-during-tissue-repair-in-diabetic-ulcers
#12
Natalio García-Honduvilla, Alberto Cifuentes, Miguel A Ortega, Marta Pastor, Garazi Gainza, Eusebio Gainza, Julia Buján, Melchor Álvarez de Mon
Wound healing is a complex process that can be severely impaired due to pathological situations such as diabetes mellitus. Diabetic foot ulcers are a common complication of this pathology, and are characterized by an excessive inflammatory response. In this work, the effects of local treatment with recombinant human Epidermal Growth Factor (rhEGF) were studied using a full-thickness wound healing model in streptozotocin-induced diabetic rats. Wound healing process was assessed with different concentrations of rhEGF (0...
March 28, 2018: Endocrine Connections
https://www.readbyqxmd.com/read/29590229/association-of-oxytocin-with-glucose-intolerance-and-inflammation-biomarkers-in-metabolic-syndrome-patients-with-and-without-prediabetes
#13
Amal Akour, Violet Kasabri, Nailya Bulatova, Suha Al Muhaissen, Randa Naffa, Hiba Fahmawi, Munther Momani, Ayman Zayed, Yasser Bustanji
OBJECTIVES: The aim of this study was to explore the differences in OXT levels in metabolic syndrome (MetS) subjects, newly diagnosed type 2 diabetes mellitus (T2D), and prediabetes subjects vs. MetS subjects without glucose intolerance (non-diabetic MetS). It was also intended to determine the relationship between plasma OXT levels and inflammatory markers in those subjects. METHODS: Along with 45 lean and normoglycemic controls, a total of 190 MetS subjects (61 men, 129 women) were enrolled...
2018: Review of Diabetic Studies: RDS
https://www.readbyqxmd.com/read/29589072/the-resident-macrophages-in-murine-pancreatic-islets-are-constantly-probing-their-local-environment-capturing-beta-cell-granules-and-blood-particles
#14
Bernd H Zinselmeyer, Anthony N Vomund, Brian T Saunders, Michael W Johnson, Javier A Carrero, Emil R Unanue
AIMS/HYPOTHESIS: We studied here the interactions between the resident macrophages of pancreatic islets with beta cells and the blood vasculature. We also examined the immunological consequences of such interactions. METHODS: Islets were isolated from C57BL/6 mice expressing CX3C motif chemokine receptor 1-green fluorescent protein (CX3CR-GFP) and examined live by two-photon microscopy. Islets were also examined by electron microscopy to study the relationship of the intra-islet macrophages with the beta cells...
March 27, 2018: Diabetologia
https://www.readbyqxmd.com/read/29587266/overexpression-of-ptpn2-in-visceral-adipose-tissue-ameliorated-atherosclerosis-via-t-cells-polarization-shift-in-diabetic-apoe-mice
#15
Ya Li, Huimin Zhou, Feng Wang, Lu Han, Minghao Liu, Yihui Li, Zhihao Wang, Mengxiong Tang, Wei Zhang, Ming Zhong
BACKGROUND/AIMS: Dysregulated inflammation in adipose tissue, marked by increased pro-inflammatory T-cell accumulation and reduced regulatory T cells (Treg), contributes to diabetes-associated insulin resistance and atherosclerosis. However, the molecular mechanisms underlying T-cell-mediated inflammation in adipose tissue remain largely unknown. METHODS: Sixty apolipoprotein E (ApoE-/-) mice were randomly divided into chow and diabetes groups. Diabetes was induced by a high-fat and high-sugar diet combined with low-dose streptozotocin...
March 21, 2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29587220/the-purinergic-p2x7-ion-channel-receptor-a-repair-receptor-in-bone
#16
REVIEW
Niklas Rye Jørgensen
A strong skeleton relies on adaptation to varying physical demands and on maintenance of the bone tissue in order to avoid accumulation of micro-damage. In bone, the purinergic P2X7 ion channel receptor is expressed on both cells of the stromal lineage such as the bone forming osteoblasts and the mechano-sensing osteocytes and on cells belonging to the immune-related monocyte-macrophage lineage, the bone resorbing osteoclasts. Recent studies have demonstrated that the receptor plays important roles in the anabolic responses to mechanical loading on bone and, together with the pannexin1 hemi-channel, in the process of initiating bone remodeling in response to micro-damage...
March 24, 2018: Current Opinion in Immunology
https://www.readbyqxmd.com/read/29587203/inhibitor-of-bruton-s-tyrosine-kinases-pci-32765-decreases-pro-inflammatory-mediators-production-in-high-glucose-induced-macrophages
#17
Zhe Fan, Yan Wang, Xingxin Xu, Yonggui Wu
Accumulating evidence has shown that macrophages play a vital role in development and pathogenesis of diabetic nephropathy (DN) by secreting inflammatory cytokines. Although Bruton's tyrosine kinases (Btk) is a biologically important molecule implicated in immune regulation, the role of Btk in high glucose (HG)-stimulated inflammatory response in macrophages and the mechanism involved need further investigation. In our study, we used bone marrow-derived macrophages (BMMs) to investigate the involvement of Btk on HG-induced inflammatory cytokines expression and to explore the underlying mechanisms...
March 24, 2018: International Immunopharmacology
https://www.readbyqxmd.com/read/29582352/correlation-analysis-of-monocyte-subsets-and-insulin-resistance-considering-fetuin-a-involvement-in-patients-with-type-2-diabetes
#18
Saori Maruo, Katsuhito Mori, Koka Motoyama, Miyuki Nakamura, Reina Kawarabayashi, Yoshinori Kakutani, Yuko Yamazaki, Tomoaki Morioka, Tetsuo Shoji, Masaaki Inaba, Masanori Emoto
BACKGROUND: Fetuin-A is a multifunctional circulating glycoprotein that can induce insulin resistance. Lately, adipose tissue has gained prominence as an effector site of fetuin-A. Although fetuin-A-induced proinflammatory polarization and migration of macrophages plays a crucial role, it remains obscure whether monocyte subsets in circulation could simulate characteristics of macrophages in adipose tissues. This study aims to investigate the correlation between monocyte subsets with fetuin-A and its relevant insulin resistance...
March 27, 2018: Clinical and Translational Medicine
https://www.readbyqxmd.com/read/29578525/characterization-of-immune-cells-in-human-adipose-tissue-by-using-flow-cytometry
#19
Suzan Wetzels, Mitchell Bijnen, Erwin Wijnands, Erik A L Biessen, Casper G Schalkwijk, Kristiaan Wouters
Infiltration of immune cells in the subcutaneous and visceral adipose tissue (AT) deposits leads to a low-grade inflammation contributing to the development of obesity-associated complications such as type 2 diabetes. To quantitatively and qualitatively investigate the immune cell subsets in human AT deposits, we have developed a flow cytometry approach. The stromal vascular fraction (SVF), containing the immune cells, is isolated from subcutaneous and visceral AT biopsies by collagenase digestion. Adipocytes are removed after centrifugation...
March 6, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29573719/anti-inflammatory-activity-of-mulberrofuran-k-isolated-from-the-bark-of-morus-bombycis
#20
Sun-Yup Shim, Sang Hyun Sung, Mina Lee
Morus bombycis Koidzumi, commonly known as silkworm mulberry, is a plant belonging to family Moraceae. It has been used in Asian countries as a traditional medicine for treating hypertension, diabetes, and inflammatory disorders. In this study, we isolated eleven compounds from the cortex of M. bombycis and evaluated their inhibitory effects on nitric oxide (NO) production as an indicator of their anti-inflammatory activities using lipopolysaccharide (LPS)-stimulated murine macrophages. Compound 4 showed the most potent inhibitory activity on NO production...
March 21, 2018: International Immunopharmacology
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