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https://www.readbyqxmd.com/read/28646220/angiotensin-ii-synergizes-with-baff-to-promote-atheroprotective-regulatory-b-cells
#1
Padmapriya Ponnuswamy, Jeremie Joffre, Olivier Herbin, Bruno Esposito, Ludivine Laurans, Christoph J Binder, Thomas F Tedder, Lynda Zeboudj, Xavier Loyer, Andreas Giraud, Yujiao Zhang, Alain Tedgui, Ziad Mallat, Hafid Ait-Oufella
Angiotensin II (AngII) promotes hypertension, atherogenesis, vascular aneurysm and impairs post-ischemic cardiac remodeling through concerted roles on vascular cells, monocytes and T lymphocytes. However, the role of AngII in B lymphocyte responses is largely unexplored. Here, we show that chronic B cell depletion (Baffr deficiency) significantly reduces atherosclerosis in Apoe (-/-) mice infused with AngII. While adoptive transfer of B cells in Apoe (-/-) /Baffr (-/-) mice reversed atheroprotection in the absence of AngII, infusion of AngII in B cell replenished Apoe (-/-) /Baffr (-/-) mice unexpectedly prevented the progression of atherosclerosis...
June 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28624900/the-cre-inducer-doxycycline-lowers-cytokine-and-chemokine-transcript-levels-in-the-gut-of-mice
#2
Axel Kornerup Hansen, Sara Astrup Malm, Stine B Metzdorff
The antibiotic doxycycline is used as an inducer of recombinase (cre)-based conditional gene knockout in mice, which is a common tool to show the effect of disrupted gene functions only in one period of a research animal's life. However, other types of such antibiotics have been shown to have a strong impact on the immune system. Here we show that in C57BL/6 mice, the most commonly applied strain for genetic modification, doxycycline treatment lowered transcription of the genes Il1b, Il10, Il18, Tnf, Cxcl1, and Cxcl2 in the ileum, and of the gene Il18 in colon...
June 18, 2017: Journal of Applied Genetics
https://www.readbyqxmd.com/read/28620885/modulatory-effect-of-aerobic-exercise-training-on-doxorubicin-induced-cardiotoxicity-in-rats-with-different-ages
#3
Mehdi Ahmadian, Valiollah Dabidi Roshan
We tested the hypothesis that aerobic exercise training (AET) would modulate doxorubicin-induced cardiotoxicity in rats of various ages. Wistar male rats (n = 72) were assigned to three groups (young, adult, and elderly) with three subgroups for each age: doxorubicin (DG, n = 8), AET + doxorubicin (AETDG, n = 8), AET + Saline (AETSG, n = 8). Following the AET intervention, rats were anesthetized and killed to collect heart tissues in order to determine heat shock protein 70 (HSP70), superoxide dismutase (SOD), malondialdehyde (MDA), interleukin-10 (IL10), and c-reactive protein (CRP)...
June 15, 2017: Cardiovascular Toxicology
https://www.readbyqxmd.com/read/28620375/comparative-gene-expression-analysis-of-lymphocytes-treated-with-exosomes-derived-from-ovarian-cancer-and-ovarian-cysts
#4
Yujuan Li, Yang Yang, Aiwei Xiong, Xiaoqin Wu, Jingyan Xie, Suping Han, Shuli Zhao
Cancer cells employ many strategies to evade immune defense and to facilitate tumor growth and angiogenesis. As a novel mode of intercellular communication, cancer-derived exosomes contribute to the recruitment and mediation of lymphocytes within the tumor environment. However, the mechanisms and key molecules mediating the effect of exosomes on lymphocytes are unclear. We treated healthy peripheral blood lymphocytes with exosomes from ovarian cancer and ovarian cysts and screened for differentially expressed genes using the RT(2) Profiler Cancer Inflammation and Immunity Crosstalk PCR Array...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28618322/multiple-inflammatory-markers-and-15-year-incident-adl-disability-in-admixed-older-adults-the-bambui-epigen-study
#5
Maria Fernanda Lima-Costa, Juliana V M Mambrini, Karen C L Torres, Sérgio V Peixoto, Fabíola B Andrade, Cesar De Oliveira, Eduardo Tarazona-Santos, Andrea Teixeira-Carvalho, Olindo A Martins-Filho
BACKGROUND: The ability of inflammatory markers to predict disability in later life has received growing attention. However, the current evidence came predominantly from Caucasians and the role of genomic ancestry has not been investigated. OBJECTIVE: We investigated the prognostic value of multiple citokynes and chemokines for incident disability in admixed older Brazilians and whether genomic African and Native American ancestry affects the association. DESIGN: Population-based longitudinal study...
June 7, 2017: Archives of Gerontology and Geriatrics
https://www.readbyqxmd.com/read/28611780/il-10-dysregulation-in-acute-mountain-sickness-revealed-by-transcriptome-analysis
#6
Bao Liu, Jian Chen, Long Zhang, Yixing Gao, Jianhua Cui, Erlong Zhang, Gang Xu, Yan Liang, Yu Liang, Jian Wang, Yuqi Gao
Acute mountain sickness (AMS), which may progress to life-threatening high-altitude cerebral edema, is a major threat to millions of people who live in or travel to high altitude. Although studies have revealed the risk factors and pathophysiology theories of AMS, the molecular mechanisms of it do not comprehensively illustrate. Here, we used a system-level methodology, RNA sequencing, to explore the molecular mechanisms of AMS at genome-wide level in 10 individuals. After exposure to high altitude, a total of 1,164 and 1,322 differentially expressed transcripts were identified in AMS and non-AMS groups, respectively...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28611056/igf1-potentiates-the-pro-inflammatory-response-in-human-peripheral-blood-mononuclear-cells-via-mapk
#7
Thalijn Liliana Catharina Wolters, Mihai Gheorghe Netea, Ad R Hermus, Jan Wa Smit, Romana T Netea-Maier
Introduction: Acromegaly is characterized by growth hormone (GH) and Insulin-like Growth Factor 1 (IGF1) excess and is accompanied by an increased cardiovascular diseases (CVD) risk. As innate immune responses are crucial in CVD development, and IGF1 is linked to subclinical inflammation, we hypothesized that GH/IGF1 excess contributes to CVD development via potentiating systemic inflammation. We aimed to assess the effects of GH/IGF1 on inflammatory cytokine production. Methods: Whole blood from acromegaly patients and healthy volunteers, and peripheral blood mononuclear cells (PBMC) from healthy volunteers were stimulated with Toll-like receptor (TLR) ligands, with or without adding GH or IGF1 (in PBMC)...
June 13, 2017: Journal of Molecular Endocrinology
https://www.readbyqxmd.com/read/28607102/the-dendritic-cell-receptor-dngr-1-promotes-the-development-of-atherosclerosis-in-mice
#8
Yacine Haddad, Charlotte Lahoute, Marc Clément, Ludivine Laurans, Sarvenaz Metghalchi, Lynda Zeboudj, Andreas Giraud, Xavier Loyer, Marie Vandestienne, Julien Wain-Hobson, Bruno Esposito, Stephane Potteaux, Hafid Ait-Oufella, Alain Tedgui, Ziad Mallat, Soraya Taleb
Rationale: Necrotic core formation during the development of atherosclerosis is associated with a chronic inflammatory response and promotes accelerated plaque development and instability. However, the molecular links between necrosis and the development of atherosclerosis are not completely understood. C-type lectin receptor (Clec9a) or DNGR1 is preferentially expressed by the CD8α(+) subset of dendritic cells (CD8α(+)DCs) and is involved in sensing necrotic cells. We hypothesized that sensing of necrotic cells by DNGR1 plays a determinant role in the inflammatory response of atherosclerosis...
June 12, 2017: Circulation Research
https://www.readbyqxmd.com/read/28603053/colonic-diverticula-are-not-associated-with-mucosal-inflammation-or-chronic-gastrointestinal-symptoms
#9
Anne F Peery, Temitope O Keku, Cassandra Addamo, Amber N McCoy, Christopher F Martin, Joseph A Galanko, Robert S Sandler
BACKGROUND & AIM: Colonic diverticulosis has been reported to be associated with low-grade mucosal inflammation possibly leading to chronic gastrointestinal symptoms. However, there is poor evidence for this association. We aimed to determine whether colonic diverticula are associated with mucosal inflammation and whether diverticula are associated with chronic gastrointestinal symptoms. We explored whether inflammation was present among symptomatic participants with and without diverticula...
June 8, 2017: Clinical Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28602842/immune-responses-and-parasitological-observations-induced-during-probiotic-treatment-with-medicinal-trichuris-suis-ova-in-a-healthy-volunteer
#10
Andrew R Williams, Anders Dige, Tue Kruse Rasmussen, Christian L Hvas, Jens F Dahlerup, Lars Iversen, C Rune Stensvold, Jørgen Agnholt, Peter Nejsum
Ingestion of eggs (ova) of the porcine nematode parasite Trichuris suis (TSO) may reduce the severity of autoimmune disorders, however the development of TSO treatment as a useful therapy for autoimmune diseases is hampered by a lack of knowledge on the development of the parasite and the nature of the local immune responses in humans. Here, we used colonoscopy to investigate the development of T. suis and related mucosal and systemic immune responses during TSO treatment in an intestinally healthy male volunteer...
June 8, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28600194/membrane-vesicles-from-piscirickettsia-salmonis-induce-protective-immunity-and-reduce-development-of-salmonid-rickettsial-septicemia-in-an-adult-zebrafish-model
#11
Julia Tandberg, Cristian Oliver, Leidy Lagos, Mona Gaarder, Alejandro J Yáñez, Erik Ropstad, Hanne C Winther-Larsen
Infections caused by the facultative intracellular bacterial pathogen Piscirickettsia salmonis remains an unsolved problem for the aquaculture as no efficient treatments have been developed. As a result, substantial amounts of antibiotic have been used to limit salmonid rickettsial septicemia (SRS) disease outbreaks. The antibiotic usage has not reduced the occurrence, but lead to an increase in resistant strains, underlining the need for new treatment strategies. P. salmonis produce membrane vesicles (MVs); small spherical structures know to contain a variety of bacterial components, including proteins, lipopolysaccharides (LPS), DNA and RNA...
June 13, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28597201/methane-alleviates-carbon-tetrachloride-induced-liver-injury-in-mice-anti-inflammatory-action-demonstrated-by-increased-pi3k-akt-gsk-3%C3%AE-mediated-il-10-expression
#12
Ying Yao, Liping Wang, Peipei Jin, Na Li, Yan Meng, Changli Wang, Mengda Xu, Yan Zhang, Jinjun Bian, Xiaoming Deng
The inflammatory response plays an important role in carbon tetrachloride (CCl4)-induced acute liver injury and methane has been shown to exert beneficial effects on inflammation-associated diseases. Thus, we investigated the potential protective effects of methane-rich saline (MS) on CCl4-induced acute liver injury and explored the underlying mechanism. A CCl4-induced acute liver injury model was established by injection of CCl4 (0.6 ml/kg, ip) in mice followed by treatment with MS (16 ml/kg, ip), 24 h later...
June 9, 2017: Journal of Molecular Histology
https://www.readbyqxmd.com/read/28596683/polymorphisms-of-microrna-target-genes-il12b-insr-ccnd1-and-il10-in-gastric-cancer
#13
Vytenis Petkevicius, Violeta Salteniene, Simonas Juzenas, Thomas Wex, Alexander Link, Marcis Leja, Ruta Steponaitiene, Jurgita Skieceviciene, Limas Kupcinskas, Laimas Jonaitis, Gediminas Kiudelis, Peter Malfertheiner, Juozas Kupcinskas
AIM: To evaluate associations between miRNA target genes IL12B, INSR, CCND1 and IL10 polymorphisms and gastric cancer (GC) in European population. METHODS: Gene polymorphisms were analyzed in 508 controls and 474 GC patients from 3 tertiary centers in Germany, Lithuania and Latvia. Controls were patients from the out-patient departments, who were referred for upper endoscopy because of dyspeptic symptoms and had no history of previous malignancy. Gastric cancer (GC) patients had histopathological verification of gastric adenocarcinoma...
May 21, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28591587/nlrp6-protects-il10-mice-from-colitis-by-limiting-colonization-of-akkermansia-muciniphila
#14
Sergey S Seregin, Natasha Golovchenko, Bryan Schaf, Jiachen Chen, Nicholas A Pudlo, Jonathan Mitchell, Nielson T Baxter, Lili Zhao, Patrick D Schloss, Eric C Martens, Kathryn A Eaton, Grace Y Chen
No abstract text is available yet for this article.
June 6, 2017: Cell Reports
https://www.readbyqxmd.com/read/28589135/effect-of-lower-and-upper-body-high-intensity-training-on-genes-associated-with-cellular-stress-response
#15
Małgorzata Żychowska, Andrzej Kochanowicz, Kazimierz Kochanowicz, Jan Mieszkowski, Bartłomiej Niespodziński, Stanisław Sawczyn
This study aimed to compare the effect of upper and lower body high intensity exercise (HIE) on select gene expression in athletes. Fourteen elite male artistic gymnasts (age 20.9 ± 2.6 years; weight 68.6 ± 7.2 kg; fat free mass 63.6 ± 6.7 kg; height 1.70 ± 0.04 m) performed lower and upper body 30 s Wingate Tests (WAnTs) before and after eight weeks of specific HIIT. Two milliliters of blood was collected before and after (5, 30 min, resp.) lower and upper body WAnTs, and select gene expression was determined by PCR...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28584007/t-cell-derived-il-10-impairs-host-resistance-to-mycobacterium-tuberculosis-infection
#16
Lúcia Moreira-Teixeira, Paul S Redford, Evangelos Stavropoulos, Nico Ghilardi, Craig L Maynard, Casey T Weaver, Ana Paula Freitas do Rosário, Xuemei Wu, Jean Langhorne, Anne O'Garra
Tuberculosis (TB), caused by Mycobacterium tuberculosis infection, is a leading cause of mortality and morbidity, causing ∼1.5 million deaths annually. CD4(+) T cells and several cytokines, such as the Th1 cytokine IFN-γ, are critical in the control of this infection. Conversely, the immunosuppressive cytokine IL-10 has been shown to dampen Th1 cell responses to M. tuberculosis infection impairing bacterial clearance. However, the critical cellular source of IL-10 during M. tuberculosis infection is still unknown...
June 5, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28583890/cd200-selectively-upregulates-prostaglandin-e2-and-d2-synthesis-in-lps-treated-bone-marrow-derived-macrophages
#17
Katharina Kern, Sandra Pierre, Yannick Schreiber, Carlo Angioni, Dominique Thomas, Nerea Ferreirós, Gerd Geisslinger, Klaus Scholich
The CD200/CD200R signalling pathway downregulates the synthesis of proinflammatory mediators and induces the synthesis of antiinflammatory mediators in macrophages and microglia. However, very little is known about the effect of this immunosuppressive pathway on the synthesis of lipid mediators. Therefore, we determined the synthesis of 35 lipids spanning 5 different lipid families in bone marrow-derived macrophages, which were treated with interleukin (IL) 4, IL10, lipopolysaccharide (LPS), or interferon γ (IFNγ) in absence and presence of CD200...
June 2, 2017: Prostaglandins & Other Lipid Mediators
https://www.readbyqxmd.com/read/28582593/secreted-protein-acidic-and-rich-in-cysteine-functions-in-colitis-via-il17a-regulation-in-mucosal-cd4-t-cells
#18
Makoto Tanaka, Tomohisa Takagi, Yuji Naito, Kazuhiko Uchiyama, Yuma Hotta, Yuki Toyokawa, Chihiro Ushiroda, Yasuko Hirai, Wataru Aoi, Yasuki Higashimura, Katsura Mizushima, Tetsuya Okayama, Kazuhiro Katada, Kazuhiro Kamada, Takeshi Ishikawa, Osamu Handa, Yoshito Itoh
BACKGROUND AND AIM: Secreted protein acidic and rich in cysteine (SPARC) is a matricellular glycol that regulates cell proliferation, tissue repair, and tumorigenesis. Despite evidence linking SPARC to inflammation, the mechanisms are unclear. Accordingly, the role of SPARC in intestinal inflammation was investigated. METHODS: Colitis was induced in wild-type (WT) and SPARC knockout (KO) mice using trinitrobenzene sulfonic acid (TNBS). Colons were assessed for damage, leukocyte infiltration, Tnf, Ifng, Il17a, and Il10 mRNA expression, and histology...
June 5, 2017: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28581443/neuropeptide-ff-increases-m2-activation-and-self-renewal-of-adipose-tissue-macrophages
#19
Syed F Hassnain Waqas, Anh Cuong Hoang, Ya-Tin Lin, Grace Ampem, Hind Azegrouz, Lajos Balogh, Julianna Thuróczy, Jin-Chung Chen, Ivan C Gerling, Sorim Nam, Jong-Seok Lim, Juncal Martinez-Ibañez, José T Real, Stephan Paschke, Raphaëlle Quillet, Safia Ayachi, Frédéric Simonin, E Marion Schneider, Jacqueline A Brinkman, Dudley W Lamming, Christine M Seroogy, Tamás Röszer
The quantity and activation state of adipose tissue macrophages (ATMs) impact the development of obesity-induced metabolic diseases. Appetite-controlling hormones play key roles in obesity; however, our understanding of their effects on ATMs is limited. Here, we have shown that human and mouse ATMs express NPFFR2, a receptor for the appetite-reducing neuropeptide FF (NPFF), and that NPFFR2 expression is upregulated by IL-4, an M2-polarizing cytokine. Plasma levels of NPFF decreased in obese patients and high-fat diet-fed mice and increased following caloric restriction...
June 5, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28575534/ccl-2-in-the-circulation-predicts-long-term-progression-of-interstitial-lung-disease-in-early-systemic-sclerosis-patients-data-from-two-independent-cohorts
#20
Minghua Wu, Murray Baron, Claudia Pedroza, Gloria A Salazar, Jun Ying, Julio Charles, Sandeep K Agarwal, Marie Hudson, Janet Pope, Xiaodong Zhou, John D Reveille, Marvin J Fritzler, Maureen D Mayes, Shervin Assassi
OBJECTIVE: There are few clinical predictors of progression of systemic sclerosis (SSc) related interstitial lung disease (ILD). Herein, we examine the predictive significance of key cytokines for long-term progression of ILD and survival in early SSc in two independent cohorts. METHODS: Plasma levels of 11 Th1/Th2 cytokines (IL-1β, IL-5, IL-6, IL-8, IL-10, IL-12, IL-13, TNF-α, CCL-2, ITAC and IP-10) were measured in 266 SSc patients in the GENISOS cohort. Next, CCL-2, IL-10, and IL-6 were measured in 171 early SSc patients from the CSRG replication cohort...
June 2, 2017: Arthritis & Rheumatology
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