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https://www.readbyqxmd.com/read/28324804/high-density-lipoprotein-immunomodulates-the-functional-activities-of-macrophage-and-cytokines-produced-during-ex-vivo-macrophage-cd4-t-cell-crosstalk-at-the-recent-onset-human-type-1-diabetes
#1
Ibtissem Benghalem, Warda Meziane, Zeyneb Hadjidj, Lamia Ysmail-Dahlouk, Ahmed Belamri, Kheira Mouhadjer, Mourad Aribi
BACKGROUND: Both CD4(+) T cells and macrophages are mainly involved in the autoimmune-mediated β-cells destruction in type 1 diabetes (T1D). The aim of this study was to examine the effect of HDL on functional activities of macrophage and its ability to regulate the production of cytokines in autologous mixed macrophage/CD4(+) T cells at the recent-onset human type 1 diabetes. METHODS: Cell samples were isolated from volunteers with recent-onset T1D or healthy controls...
March 16, 2017: Cytokine
https://www.readbyqxmd.com/read/28324104/vasoprotective-activities-of-the-adrenomedullin-ramp2-system-in-endothelial-cells
#2
Xian Xian, Takayuki Sakurai, Akiko Kamiyoshi, Yuka Ichikawa-Shindo, Megumu Tanaka, Teruhide Koyama, Hisaka Kawate, Lei Yang, Tian Liu, Akira Imai, Liuyu Zhai, Kazutaka Hirabayashi, Kun Dai, Keiya Tanimura, Teng Liu, Nanqi Cui, Kyoko Igarashi, Akihiro Yamauchi, Takayuki Shindo
Neointimal hyperplasia is the primary lesion underlying atherosclerosis and restenosis after coronary intervention. We previously described the essential angiogenic function of the adrenomedullin (AM)-receptor activity-modifying protein 2 (RAMP2) system. In the present study, we assessed the vasoprotective actions of the endogenous AM-RAMP2 system using a wire-induced vascular injury model. We found that neointima formation and vascular smooth muscle cell proliferation were enhanced in RAMP2+/- male mice. The injured vessels from RAMP2+/- mice showed greater macrophage infiltration, inflammatory cytokine expression and oxidative stress than vessels from wild-type mice, and less re-endothelialization...
January 27, 2017: Endocrinology
https://www.readbyqxmd.com/read/28318044/pathomechanisms-of-anti-cn1a-autoantibodies-in-sporadic-inclusion-body-myositis
#3
Nozomu Tawara, Satoshi Yamashita, Xiao Zhang, Mai Korogi, Ziwei Zhang, Tsukasa Doki, Yoshimasa Matsuo, Shunya Nakane, Yasushi Maeda, Kazuma Sugie, Naoki Suzuki, Masashi Aoki, Yukio Ando
OBJECTIVE: Sporadic inclusion body myositis (sIBM), an intractable progressive muscle disease, frequently occurs in older persons. sIBM pathogenesis may involve protein degradation dysfunction and immune abnormalities. Autoantibodies recognizing cytosolic 5'-nucleotidase 1A (cN1A) were found in plasma and serum from sIBM patients. Whether anti-cN1A autoantibodies play a pathogenic role in sIBM is controversial, however. This study investigated the pathogenic properties of anti-cN1A autoantibodies in sIBM pathogenesis...
March 20, 2017: Annals of Neurology
https://www.readbyqxmd.com/read/28315675/low-intensity-training-and-the-c5a-complement-antagonist-nox-d21-rescue-the-mdx-phenotype-through-modulation-of-inflammation
#4
Janek Hyzewicz, Jun Tanihata, Mutsuki Kuraoka, Yuko Nitahara-Kasahara, Teiva Beylier, Urs T Ruegg, Axel Vater, Shin'ichi Takeda
Inflammatory events occurring in dystrophic muscles contribute to the progression of Duchenne muscular dystrophy (DMD). Low-intensity training (LIT) attenuates the phenotype of mdx mice, an animal model for DMD. Therefore, we postulated that LIT could have anti-inflammatory properties. We assessed levels of inflammatory cytokines and infiltrated immune cells in gastrocnemius muscle of mdx mice after LIT. We detected high levels of complement component C5a, chemokine ligand (CCL) 2, CD68(+) monocytes/macrophages, and proinflammatory M1 macrophages in muscles of mdx mice...
March 15, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28303680/serum-adipocyte-fatty-acid-binding-protein-levels-associate-with-peripheral-arterial-disease-in-women-not-in-men-with-type-2-diabetes
#5
Min Ding, Jian-Ying Shi, Yun-Zhi Xing, Bei Sun, Qian-Hua Fang, Jing-Yun Zhang, Qiu-Mei Zhang, Li-Ming Chen, De-Min Yu, Chun-Jun Li
BACKGROUNDS: Adipocyte fatty acid-binding protein (A-FABP) has been recognized an important player in macrophage cholesterol trafficking and inflammation, might promote the development of atherosclerosis. To further elucidate the role of A-FABP in atherosclerosis in diabetes, we investigated the relationship between serum A-FABP levels and peripheral arterial disease (PAD) in patients with type 2 diabetes (T2DM). METHODS: A total of 488 inpatients with T2DM were enrolled in this study (254 men and 234 women, mean age, 57...
March 17, 2017: Journal of Diabetes
https://www.readbyqxmd.com/read/28302726/the-rna-binding-protein-tristetraprolin-ttp-is-a-critical-negative-regulator-of-the-nlrp3-inflammasome
#6
Moritz Haneklaus, John D O'Neil, Andrew R Clark, Seth L Masters, Luke A J O'Neill
The NLRP3 inflammasome is a central regulator of inflammation in many common diseases, including atherosclerosis and Type 2 diabetes, driving the production of pro-inflammatory mediators such as IL-1β and IL-18. Due to its function as an inflammatory gatekeeper, expression and activation of NLRP3 need to be tightly regulated. In this study, we highlight novel post-transcriptional mechanisms that can modulate NLRP3 expression. We have identified the RNA-binding protein Tristetraprolin (TTP) as a negative regulator of NLRP3 in human macrophages...
March 16, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28300703/highly-oxygenated-lanostane-type-triterpenoids-and-their-bioactivity-from-the-fruiting-body-of-ganoderma-gibbosum
#7
De-Bing Pu, Xi Zheng, Jun-Bo Gao, Xing-Jie Zhang, Yan Qi, Xiao-Si Li, Yong-Mei Wang, Xiao-Nian Li, Xiao-Li Li, Chun-Ping Wan, Wei-Lie Xiao
Eight new highly oxygenated lanostane triterpenes, gibbosic acids A-H (1-8), along with three known ones (9-11), were isolated from the fruiting body of Ganoderma gibbosum. The structures of new isolates were assigned by NMR and HRESIMS experiments. The absolute configurations of 1 were further confirmed by single crystal X-ray diffraction data and computational ECD methods. Immunoregulatory effect and anti-inflammatory activities of these compounds were screened in murine lymphocyte proliferation assay and in lipopolysaccharide (LPS)-stimulated RAW-264...
March 11, 2017: Fitoterapia
https://www.readbyqxmd.com/read/28300223/role-of-cyclooxygenase-2-on-intermittent-hypoxia-induced-lung-tumor-malignancy-in-a-mouse-model-of-sleep-apnea
#8
Noelia Campillo, Marta Torres, Antoni Vilaseca, Paula Naomi Nonaka, David Gozal, Jordi Roca-Ferrer, César Picado, Josep Maria Montserrat, Ramon Farré, Daniel Navajas, Isaac Almendros
An adverse role for obstructive sleep apnea (OSA) in cancer epidemiology and outcomes has recently emerged from clinical and animal studies. In animals, intermittent hypoxia (IH) mimicking OSA promotes tumor malignancy both directly and via host immune alterations. We hypothesized that IH could potentiate cancer aggressiveness through activation of the cyclooxygenase-2 (COX-2) pathway and the concomitant increases in prostaglandin E2 (PGE2). The contribution of the COX-2 in IH-induced enhanced tumor malignancy was assessed using celecoxib as a COX-2 specific inhibitor in a murine model of OSA bearing Lewis lung carcinoma (LLC1) tumors...
March 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28298526/the-ap-1-transcription-factor-c-jun-promotes-arthritis-by-regulating-cyclooxygenase-2-and-arginase-1-expression-in-macrophages
#9
Nicole Hannemann, Jutta Jordan, Sushmita Paul, Stephen Reid, Hanns-Wolf Baenkler, Sophia Sonnewald, Tobias Bäuerle, Julio Vera, Georg Schett, Aline Bozec
Activation of proinflammatory macrophages is associated with the inflammatory state of rheumatoid arthritis. Their polarization and activation are controlled by transcription factors such as NF-κB and the AP-1 transcription factor member c-Fos. Surprisingly, little is known about the role of the AP-1 transcription factor c-Jun in macrophage activation. In this study, we show that mRNA and protein levels of c-Jun are increased in macrophages following pro- or anti-inflammatory stimulations. Gene Ontology and Kyoto Encyclopedia of Genes and Genomes pathway enrichment cluster analyses of microarray data using wild-type and c-Jun-deleted macrophages highlight the central function of c-Jun in macrophages, in particular for immune responses, IL production, and hypoxia pathways...
March 15, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28298521/the-interaction-of-pneumocystis-with-the-c-type-lectin-receptor-mincle-exerts-a-significant-role-in-host-defense-against-infection
#10
Theodore J Kottom, Deanne M Hebrink, Paige E Jenson, Vijayalakshmi Nandakumar, Marcel Wüthrich, Huafeng Wang, Bruce Klein, Sho Yamasaki, Bernd Lepenies, Andrew H Limper
Pneumocystis pneumonia (PCP) remains a major cause of morbidity and mortality within immunocompromised patients. In this study, we examined the potential role of macrophage-inducible C-type lectin (Mincle) for host defense against Pneumocystis Binding assays implementing soluble Mincle carbohydrate recognition domain fusion proteins demonstrated binding to intact Pneumocystis carinii as well as to organism homogenates, and they purified major surface glycoprotein/glycoprotein A derived from the organism. Additional experiments showed that rats with PCP expressed increased Mincle mRNA levels...
March 15, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28297747/enterococcus-faecium-fc-k-derived-from-kimchi-is-a-probiotc-lactic-acid-bacteria-that-shows-anti-allergic-activity
#11
Man-Kwang Rho, Young-Eun Kim, Hyun-In Rho, Tae-Rahk Kim, Yoon-Bum Kim, Won-Kyung Sung, Taw-Woo Kim, Dae-Ok Kim, Hee Kang
A rise in the occurrence of allergic diseases is attributed to the dysregulated balance of type 1/type 2 immunity, where type 2 T helper (Th2) cells predominate over type 1 T helper (Th1) cells, leading to an abnormally increased production of IgE in response to unharmful antigens. Kimchi, a traditional Korean fermented food, is a rich source of beneficial lactic acid bacteria. In this study, we investigated the ability of Enterococcus faecium FC-K derived from kimchi to induce type I immunity in the presence of Th2 polarizing conditions in vitro and in vivo...
March 15, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28292183/n-docosahexaenoyl-dopamine-an-endocannabinoid-like-conjugate-of-dopamine-and-the-n-3-fatty-acid-docosahexaenoic-acid-attenuates-lipopolysaccharide-induced-activation-of-microglia-and-macrophages-via-cox-2
#12
Ya Wang, Pierluigi Plastina, Jean-Paul Vincken, Renate Jansen, Michiel Balvers, Jean Paul Ten Klooster, Harry Gruppen, Renger Witkamp, Jocelijn Meijerink
Several studies indicate that the n-3 long-chain polyunsaturated fatty acid docosahexaenoic acid (DHA) contributes to an attenuated inflammatory status in the development of neurodegenerative disorders, such as Alzheimer's and Parkinson's disease. To explain these effects, different mechanisms are being proposed, including those involving endocannabinoids and related signaling molecules. Many of these compounds belong to the fatty acid amides, conjugates of fatty acids with biogenic amines. Conjugates of DHA with ethanolamine or serotonin have previously been shown to possess anti-inflammatory and potentially neuroprotective properties...
March 15, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28289694/data-report-on-inflammatory-c-c-chemokines-among-insulin-using-women-with-diabetes-mellitus-and-breast-cancer
#13
Zachary A P Wintrob, Jeffrey P Hammel, George K Nimako, Zahra S Fayazi, Dan P Gaile, Erin E Davis, Alan Forrest, Alice C Ceacareanu
Injectable insulin use may interfere with pro-inflammatory cytokines' production and, thus, play a role in the activation of tumor-associated macrophages - a process mainly influenced by inflammatory C-C chemokines. The data presented shows the relationship between pre-existing use of injectable insulin in women diagnosed with breast cancer and type 2 diabetes mellitus, the inflammatory C-C chemokine profiles at the time of breast cancer diagnosis, and subsequent cancer outcomes. A Pearson correlation analysis stratified by insulin use and controls is also provided...
April 2017: Data in Brief
https://www.readbyqxmd.com/read/28289158/annexin-a1-is-involved-in-the-resolution-of-inflammatory-responses-during-leishmania-braziliensis-infection
#14
Leandro G Oliveira, Míriam C Souza-Testasicca, Juliana P Vago, Amanda Braga Figueiredo, Adriana M C Canavaci, Luiza Oliveira Perucci, Tatiana P Teixeira Ferreira, Eduardo A F Coelho, Denise Utsch Gonçalves, Manoel Otávio C Rocha, Patrícia M R E Silva, Cláudia N Ferreira, Celso Queiroz-Junior, Lirlândia P Sousa, Ana Paula Fernandes
Leishmaniases are diseases caused by several Leishmania species. Leishmania (Viannia) braziliensis can cause localized cutaneous leishmaniasis (LCL), which heals spontaneously, or mucosal leishmaniasis (ML), characterized by chronic and intense inflammation and scanty parasitism. Annexin A1 (AnxA1) is a protein involved in modulation and resolution of inflammation through multiple mechanisms. In the present study, the role of AnxA1 was investigated in L. braziliensis-infected BALB/c mice. AnxA1 levels increased at the peak of tissue lesion and parasitism in infected mice...
March 13, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28289147/gfpuv-expressing-recombinant-rickettsia-typhi-a-useful-tool-for-the-study-of-pathogenesis-and-cd8-t-cell-immunology-in-rickettsia-typhi-infection
#15
Matthias Hauptmann, Nicole Burkhardt, Ulrike Munderloh, Svenja Kuehl, Ulricke Richardt, Susanne Krasemann, Kristin Hartmann, Till Krech, Bernhard Fleischer, Christian Keller, Anke Osterloh
Rickettsia (R) typhi is the causative agent of endemic typhus, a disease that occurs wordwide with increasing incidence and can be fatal. Because of its obligate intracellular life style, genetic manipulation of this pathogen is difficult. Nonetheless, in recent years genetic manipulation tools have been successfully applied to rickettsiae. We describe here for the first time the transformation of R. typhi with the pRAM18dRGA plasmid that originally derives from R. amblyommatis and encodes for the expression of GFP(uv) Transformed R...
March 13, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28287533/isolation-of-endothelial-progenitor-cells-from-healthy-volunteers-and-their-migratory-potential-influenced-by-serum-samples-after-cardiac-surgery
#16
Christoph Emontzpohl, David Simons, Sandra Kraemer, Andreas Goetzenich, Gernot Marx, Jürgen Bernhagen, Christian Stoppe
Endothelial progenitor cells (EPCs) are recruited from the bone marrow under pathological conditions like hypoxia and are crucially involved in the neovascularization of ischemic tissues. The origin, classification and characterization of EPCs are complex; notwithstanding, two prominent sub-types of EPCs have been established: so-called "early" EPCs (subsequently referred to as early-EPCs) and late-outgrowth EPCs (late-EPCs). They can be classified by biological properties as well as by their appearance during in vitro culture...
February 14, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28284615/pyrithione-inhibits-porcine-reproductive-and-respiratory-syndrome-virus-replication-through-interfering-with-nf-%C3%AE%C2%BAb-and-heparanase
#17
Chunhe Guo, Zhenbang Zhu, Xiaoying Wang, Yaosheng Chen, Xiaohong Liu
Porcine reproductive and respiratory syndrome virus (PRRSV) is a continuous threat to the pig industry, causing high economic losses worldwide. Current vaccination strategies provide only limited protection against PRRSV infection. Consequently, there is a need to develop new antiviral strategies. Pyrithione (PT), a zinc ionophore, is used as an antibacterial and antifungal agent, and evidence has shown that PT inhibits the replication of various RNA viruses. However, there is no data regarding its effects against PRRSV infection until now...
March 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28284201/the-utility-of-apoptosis-inhibitor-of-macrophages-as-a-possible-diagnostic-marker-in-patients-with-crohn-s-disease
#18
Yohei Ono, Shuji Kanmura, Yuko Morinaga, Kohei Oda, Katsuto Kawabata, Shiho Arima, Fumisato Sasaki, Yuichirou Nasu, Shiroh Tanoue, Shinichi Hashimoto, Hiroki Taguchi, Hirofumi Uto, Hirohito Tsubouchi, Akio Ido
BACKGROUND: Apoptosis inhibitor of macrophages (AIM) was initially identified as an apoptosis inhibitor that supports the survival of macrophages against various apoptosis-inducing stimuli, and AIM produced by macrophages may contribute to the pathogenesis of inflammatory bowel diseases (IBDs). However, there have been no reports on the kinetics of AIM in IBD and the impact of AIM on the pathogenesis of IBD. In this study, we aimed to investigate the diagnostic utility of levels of AIM and their correlation with the activity of Crohn's disease (CD) and IBD...
March 11, 2017: BMC Gastroenterology
https://www.readbyqxmd.com/read/28283837/vascular-hyperpermeability-as-a-hallmark-of-phacomatoses-is-the-etiology-angiogenesis-related-to-or-comparable-with-mechanisms-seen-in-inflammatory-pathways-part-ii-angiogenesis-and-inflammation-related-molecular-pathways-tumor-associated-macrophages-and-possible
#19
REVIEW
Yosef Laviv, Burkhard Kasper, Ekkehard M Kasper
Phacomatoses are a special group of familial hamartomatous syndromes with unique neurocutaneous manifestations as well as characteristic tumors. Neurofibromatosis type 2 (NF2) and tuberous sclerosis complex (TSC) are representatives of this family. A vestibular schwannoma (VS) and subependymal giant cell tumor (SGCT) are two of the most common intracranial tumors associated with these syndromes, related to NF2 and TSC, respectively. These tumors can present with an obstructive hydrocephalus due to their location adjacent to or in the ventricles...
March 11, 2017: Neurosurgical Review
https://www.readbyqxmd.com/read/28282442/characterization-of-c-type-lectins-reveals-an-unexpectedly-limited-interaction-between-cryptococcus-neoformans-spores-and-dectin-1
#20
Naomi M Walsh, Marcel Wuthrich, Huafeng Wang, Bruce Klein, Christina M Hull
Phagocytosis by innate immune cells is an important process for protection against multiple pathologies and is particularly important for resistance to infection. However, phagocytosis has also been implicated in the progression of some diseases, including the dissemination of the human fungal pathogen, Cryptococcus neoformans. Previously, we identified Dectin-1 as a likely phagocytic receptor for C. neoformans spores through the use of soluble components in receptor-ligand blocking experiments. In this study, we used gain-of-function and loss-of-function assays with intact cells to evaluate the in vivo role of Dectin-1 and other C-type lectins in interactions with C...
2017: PloS One
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