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https://www.readbyqxmd.com/read/28205558/plant-based-vaccines-for-oral-delivery-of-type-1-diabetes-related-autoantigens-evaluating-oral-tolerance-mechanisms-and-disease-prevention-in-nod-mice
#1
Amanda L Posgai, Clive H Wasserfall, Kwang-Chul Kwon, Henry Daniell, Desmond A Schatz, Mark A Atkinson
Autoantigen-specific immunological tolerance represents a central objective for prevention of type 1 diabetes (T1D). Previous studies demonstrated mucosal antigen administration results in expansion of Foxp3(+) and LAP(+) regulatory T cells (Tregs), suggesting oral delivery of self-antigens might represent an effective means for modulating autoimmune disease. Early preclinical experiments using the non-obese diabetic (NOD) mouse model reported mucosal administration of T1D-related autoantigens [proinsulin or glutamic acid decarboxylase 65 (GAD)] delayed T1D onset, but published data are conflicting regarding dose, treatment duration, requirement for combinatorial agents, and extent of efficacy...
February 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28205317/oxidative-stress-and-immunosenescence-in-spleen-of-obese-mice-can-be-reversed-by-2-hydroxyoleic-acid
#2
Alina Gheorghe, Fátima Pérez de Heredia, Caroline Hunsche, Noemí Redondo, Ligia Esperanza Díaz, Oskarina Hernández, Ascensión Marcos, Mónica De la Fuente
We aimed to investigate the effects of obesity on oxidative stress and leukocyte function in spleen of mice, and to assess whether supplementation with 2-hydroxyoleic acid (2-OHOA) or n-3 polyunsaturated fatty acids (PUFA) could reverse those effects. Female ICR/CD1 mice (8 weeks old, n = 24) received an obesogenic diet (22% fat for 4 weeks and 60% fat for 14 weeks). After 6 weeks, mice were split in three groups (n = 8/group): no supplementation, 2-OHOA supplementation (1500 mg kg(-1) ) and n-3 PUFA supplementation (EPA + DHA, 3000 mg kg(-1) diet)...
February 15, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/28202548/neutrophil-elastase-regulates-emergency-myelopoiesis-preceding-systemic-inflammation-in-diet-induced-obesity
#3
Jun-Yuan Huang, Qiong Lin Zhou, Chun-Hong Huang, Ye Song, Andria G Sharma, Zhangping Liao, Kavin Zhu, Miles W Massidda, Ryan R Jamieson, Jun-Yuan Zhang, Daniel G Tenen, Zhen Y Jiang
Inflammation plays a significant role in the development of obesity-related complications, but the molecular events that initiate and propagate such inflammation remain unclear. Here, we report that mice fed a high-fat diet (HFD) for as short as one to three days show increased myeloid progenitors differentiation into neutrophils and monocytes but reduced B lymphocyte production in the bone marrow (BM). Levels of neutrophil elastase (NE) and the nuclear factors CCAAT-enhancer-binding protein alpha (C/EBPα) and growth factor independent 1 (GFI-1) are elevated in hematopoietic stem and progenitor cells (HSPCs) from HFD-fed mice, but mice lacking either NE or C/EBPα are resistant to HFD-induced myelopoiesis...
February 15, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28192375/adipose-tissue-b2-cells-promote-insulin-resistance-through-leukotriene-ltb4-ltb4r1-signaling
#4
Wei Ying, Joshua Wollam, Jachelle M Ofrecio, Gautam Bandyopadhyay, Dalila El Ouarrat, Yun Sok Lee, Da Young Oh, Pingping Li, Olivia Osborn, Jerrold M Olefsky
Tissue inflammation is a key component of obesity-induced insulin resistance, with a variety of immune cell types accumulating in adipose tissue. Here, we have demonstrated increased numbers of B2 lymphocytes in obese adipose tissue and have shown that high-fat diet-induced (HFD-induced) insulin resistance is mitigated in B cell-deficient (Bnull) mice. Adoptive transfer of adipose tissue B2 cells (ATB2) from wild-type HFD donor mice into HFD Bnull recipients completely restored the effect of HFD to induce insulin resistance...
February 13, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28187313/il-20-contributes-to-low-grade-inflammation-and-weight-gain-in-the-psammomys-obesus
#5
Helena Cucak, Lise Høj Thomsen, Alexander Rosendahl
The metabolic syndrome has been demonstrated in gene deficient animals, e.g. db/db mice, to include a systemic inflammation leading to insulin resistance, obesity and type 2 diabetes (T2D). To determine the importance of inflammation in obesity and diabetes, in a normal non-genetically modified species, an intervention study with neutralizing anti-IL-20 antibodies was conducted in the spontaneous T2D model Psammomys obesus. All IL-20 receptor chains were expressed on protein level in the Psammomys obesus. Neutralization of IL-20 did not modulate blood glucose, HbA1c, insulin levels or lymphocyte numbers after five weeks treatment although a trend to reduced weight gain rate was observed upon anti-IL-20 treatment...
February 7, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28182098/antioxidant-immunomodulating-and-microbial-modulating-activities-of-the-sustainable-and-ecofriendly-spirulina
#6
REVIEW
Alberto Finamore, Maura Palmery, Sarra Bensehaila, Ilaria Peluso
The highly nutritional and ecofriendly Spirulina (Arthrospira platensis) has hypolipidemic, hypoglycemic, and antihypertensive properties. Spirulina contains functional compounds, such as phenolics, phycocyanins, and polysaccharides, with antioxidant, anti-inflammatory, and immunostimulating effects. Studies conducted on Spirulina suggest that it is safe in healthy subjects, but attitude to eating probably affects the acceptability of Spirulina containing foods. Although the antioxidant effect of Spirulina is confirmed by the intervention studies, the concerted modulation of antioxidant and inflammatory responses, suggested by in vitro and animal studies, requires more confirmation in humans...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28181253/adipocytes-properties-and-crosstalk-with-immune-system-in-obesity-related-inflammation
#7
REVIEW
Giulia Maurizi, Lucio Della Guardia, Angela Maurizi, Antonella Poloni
Obesity is a condition likely associated with several dysmetabolic conditions or worsening of cardiovascular and other chronic disturbances. A key role in this mechanism seem to be played by the onset of low-grade systemic inflammation, highlighting the importance of the interplay between adipocytes and immune system cells. Adipocytes express a complex and highly adaptive biological profile being capable to selectively activate different metabolic pathways in order to respond to environmental stimuli. It has been demonstrated how adipocytes, under appropriate stimulation, can easily differentiate and de-differentiate thereby converting themselves into different phenotypes according to metabolic necessities...
February 9, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28151767/increasing-incidence-and-altered-presentation-in-a-population-based-study-of-pediatric-celiac-disease-in-north-america
#8
Eyad Almallouhi, Katherine S King, Bhavisha Patel, Chung Wi, Young J Juhn, Joseph A Murray, Imad Absah
OBJECTIVES: Celiac disease (CD) is a common immune-mediated disorder that affects up to 1% of the general population. Recent reports suggest that the incidence of CD has reached a plateau in many countries. We aim to study the incidence and altered presentation of childhood CD in a well-defined population. METHODS: Using the Rochester Epidemiology Project, we retrospectively reviewed Mayo Clinic and Olmsted Medical Center medical records from January 1994 to December 2014...
February 1, 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28150048/lymphocytes-and-macrophages-in-adipose-tissue-in-obesity-markers-or-makers-of-subclinical-inflammation
#9
REVIEW
Anna Cinkajzlová, Miloš Mráz, Martin Haluzík
Obesity is accompanied by the development of chronic low-grade inflammation in adipose tissue. The presence of chronic inflammatory response along with metabolically harmful factors released by adipose tissue into the circulation is associated with several metabolic complications of obesity such as type 2 diabetes mellitus or accelerated atherosclerosis. The present review is focused on macrophages and lymphocytes and their possible role in low-grade inflammation in fat. Both macrophages and lymphocytes respond to obesity-induced adipocyte hypertrophy by their migration into adipose tissue...
February 1, 2017: Protoplasma
https://www.readbyqxmd.com/read/28143694/quantitative-computed-tomography-imaging-based-clustering-differentiates-asthmatic-subgroups-with-distinctive-clinical-phenotypes
#10
Sanghun Choi, Eric A Hoffman, Sally E Wenzel, Mario Castro, Sean Fain, Nizar Jarjour, Mark L Schiebler, Kun Chen, Ching-Long Lin
BACKGROUND: Imaging variables including airway diameter, wall thickness and air-trapping have been found to be important metrics when differentiating severe asthmatics from nonsevere asthmatics and healthy subjects. OBJECTIVE: The objective of this study was to identify imaging-based clusters and to explore the association of the clusters with existing clinical metrics. METHODS: We performed an imaging-based cluster analysis using quantitative computed tomography-based structural and functional variables extracted from the respective inspiration and expiration scans of 248 asthmatics...
January 28, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28139216/integrated-stress-response-activation-by-sleep-fragmentation-during-late-gestation-in-mice-leads-to-emergence-of-adverse-metabolic-phenotype-in-offspring
#11
Wojciech Trzepizur, Abdelnaby Khalyfa, Zhuanhong Qiao, Brian Popko, David Gozal
BACKGROUND: Late gestational sleep fragmentation (SF) is highly prevalent particularly in obese women, and induces metabolic dysfunction in adult offspring mice. SF induces activation of the integrated stress response (ISR), which might be involved in metabolic disorders. We hypothesized that adult offspring of double mutant mice (DM) involving the critical ISR genes CHOP and GADD34 would be protected from developing obesity and insulin resistance following SF. METHODS: Time-pregnant CHOP/GADD34 DM and wild type (WT) mice were randomly assigned to sleep control (SC) or SF conditions during the last 5days of gestation...
January 21, 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28059607/influences-of-obesity-on-the-immunogenicity-of-hepatitis-b-vaccine
#12
Fang Liu, Zhirong Guo, Chen Dong
OBJECTIVE: Hepatitis B vaccine is regarded as the most effective method for the prevention of hepatitis B virus (HBV) infection. However, several factors such as age, body mass index and immunocompetent state have been reported to be associated with reduced immunization responses. The present commentary was aimed to discuss the influences of obesity on the immunogenicity of hepatitis B vaccines. DATA SOURCES: Available peer-reviewed literatures, practice guidelines, and statistics published on hepatitis B vaccine in obesity between 1973 and 2015...
January 6, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28040133/molecular-cytogenetic-characterization-of-mosaicism-for-a-small-supernumerary-marker-chromosome-derived-from-chromosome-8-or-r-8-p11-22%C3%A2-q11-21-in-an-18-year-old-female-with-short-stature-obesity-attention-deficit-hyperactivity-disorder-and-intellectual-disability
#13
Chih-Ping Chen, Shuan-Pei Lin, Schu-Rern Chern, Peih-Shan Wu, Yen-Ni Chen, Shin-Wen Chen, Chien-Wen Yang, Meng-Shan Lee, Wayseen Wang
OBJECTIVE: We present molecular cytogenetic characterization of mosaicism for a small supernumerary marker chromosome (sSMC) derived from chromosome 8. MATERIALS AND METHODS: An 18-year-old female presented with short stature, obesity, developmental delay, speech delay, dyslexia, attention deficit hyperactivity disorder, and intellectual disability. Cytogenetic analysis of the peripheral blood revealed a karyotype of 47,XX,+mar[22]/46,XX[18]. Array comparative genomic hybridization and metaphase fluorescence in situ hybridization analyses were performed on the peripheral blood to determine the origin and mosaicism of the sSMC, and quantitative fluorescent polymerase chain reaction was used to exclude uniparental disomy...
December 2016: Taiwanese Journal of Obstetrics & Gynecology
https://www.readbyqxmd.com/read/27939445/changes-in-adipose-tissue-cellular-composition-during-obesity-and-aging-as-a-cause-of-metabolic-dysregulation
#14
Kari Martyniak, Michal M Masternak
Adipose tissue represents complex endocrine organ containing several different cellular populations including adipocytes, pre-adipocytes, mesenchymal stem cells, macrophages and lymphocytes. It is well establishing that these populations are not static but alter during obesity and aging. Changes in cellular populations alter inflammatory status and other common metabolic complications arise, therefore adipose tissue cellular composition helps dictate its endocrine and regulatory function. During excessive weight gain in obese individuals and as we age there is shift towards increase populations of inflammatory macrophages with a decrease of regulatory T cell...
December 9, 2016: Experimental Gerontology
https://www.readbyqxmd.com/read/27912745/ganoderma-lucidum-beta-1-3-1-6-glucan-as-an-immunomodulator-in-inflammation-induced-by-a-high-cholesterol-diet
#15
Yu-Sheng Wu, Shu-Ying Ho, Fan-Hua Nan, Shiu-Nan Chen
BACKGROUND: Binding of beta 1,3/1,6 glucan of Ganoderma lucidum (G. lucidum) with the receptor results in a series of signal transfers (signalling cascades), which activates the transcription factors for regulating inflammation. Excess cholesterol intake leads to an increase in the distance between fat cells and capillaries, which may cause hypoxia in the fat tissue of obese mice. This hypoxia induces the death of fat cells, resulting in the inflammation of adipose tissue or an increase in the inflammatory gene expression associated with obesity...
December 3, 2016: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/27899808/autoimmunity-to-hsp60-during-diet-induced-obesity-in-mice
#16
M E Şelli, G Wick, D C Wraith, A C Newby
Adaptive immunity has been implicated in adipose tissue inflammation, obesity and its adverse metabolic consequences. No obesity-related autoantigen has yet been identified, although heat shock protein 60 (HSP60) has been implicated in other autoimmune diseases. We investigated whether feeding a high-fat diet to C57BL/6J mice would cause autoimmunity to HSP60 and whether immunomodulation with peptides from HSP60 would reverse the resulting obesity or metabolic dysfunction. Obese mice had higher circulating levels of HSP60 associated with increased T-lymphocyte proliferation responses and the emergence of circulating IgG1 and IgG2c antibody levels against HSP60...
February 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/27882092/the-influence-of-exendin-4-intervention-on-obese-diabetic-mouse-blood-and-the-pancreatic-tissue-immune-microenvironment
#17
Jinshui He, Chaowei Lian, Yanling Fang, Jinzhi Wu, Huowang Zhou, Xiaoling Ye
The aim of the study was to determine the influence of exendin-4 intervention on non-obese diabetic (NOD) mouse blood and the pancreatic tissue immune microenvironment. A total of 40 clean NOD mice were used in the study and randomly divided into 4 groups (n=10/group). The first group was blank control group D with normal saline intervention, and with different doses of exendin, i.e.,-4 2, 4 and 8 µg/kg/day. The three remaining groups were: i) Low-dose group A; ii) medium-dose group B; and iii) high-dose group C...
November 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27874076/oligofructose-as-an-adjunct-in-treatment-of-diabetes-in-nod-mice
#18
Clement Chan, Colin M Hyslop, Vipul Shrivastava, Andrea Ochoa, Raylene A Reimer, Carol Huang
In type 1 diabetes, restoration of normoglycemia can be achieved if the autoimmune attack on beta cells ceases and insulin requirement is met by the residual beta cells. We hypothesize that an adjunctive therapy that reduces insulin demand by increasing insulin sensitivity will improve the efficacy of an immunotherapy in reversing diabetes. We tested the gut microbiota-modulating prebiotic, oligofructose (OFS), as the adjunctive therapy. We treated non-obese diabetic mice with an immunotherapy, monoclonal anti-CD3 antibody (aCD3), with or without concurrent dietary supplement of OFS...
November 22, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27832860/adiponectin-administration-prevents-weight-gain-and-glycemic-profile-changes-in-diet-induced-obese-immune-deficient-rag1-mice-lacking-mature-lymphocytes
#19
Xiaowen Liu, Nikolaos Perakakis, Huizhi Gong, John P Chamberland, Mary T Brinkoetter, Ole-Petter R Hamnvik, Christos S Mantzoros
BACKGROUND: Obesity is associated with chronic low-grade inflammation leading to insulin resistance and diabetes. Adiponectin is an adipokine that regulates inflammatory responses. The aim of our study was to investigate whether any effects of adiponectin against obesity and insulin-resistance may depend on the adaptive immune system. METHODS: We treated high-fat-diet fed Rag1-/- mice lacking mature lymphocytes with adiponectin over 7weeks and investigated alterations in their metabolic outcome and inflammatory state...
December 2016: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/27821024/predictive-value-of-neutrophiltolymphocyte-ratio-in-the-severity-of-non-alcoholic-fatty-liver-disease-among-type-2-diabetes-patients
#20
N K Kahraman, C Kahraman, F E Koçak, S Coşgun, B Şanal, M Korkmaz, Z Bayhan, S Zeren
BACKGROUND: Non-alcoholic fatty liver disease is a progressive inflammatory disease that ultimately results in cirrhosis and liver failure. It is assosiciated with two step hit scenario; the first step is fat accumulationin liver and in the second step inflammation and fibrosis are the major compenents. The incidence of this disease is increasing worldwide, following rising incidences of obesity and diabetes mellitus. AIM: The aim of this study is to analyze the relationship between non-alcoholic fatty liver disease andseverity and neutrophil-to-lymphocyte ratio among the patients having type 2 diabetes mellitus...
July 2016: Acta Gastro-enterologica Belgica
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