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https://www.readbyqxmd.com/read/28814068/the-activation-of-nlrp3-inflammsome-by-stimulation-of-diesel-exhaust-particles-in-lung-tissues-from-emphysema-model-and-raw-264-7-cell-line
#1
Soo-Taek Uh, So My Koo, Yangki Kim, Kiup Kim, Sungwoo Park, An Soo Jang, Dojin Kim, Yong Hoon Kim, Choon-Sik Park
Background/Aims: Diesel exhaust particles (DEPs) lead to elevation of reactive oxygen species, which can activate the nucleotide-binding oligomerization domain-like receptor (NLR) family members containing the pyrin domain 3 (NLRP3)-inf lammasome. In this study, we elucidated whether NLRP3 -inf lammasome is activated by DEPs and whether antioxidants (N-acetylcysteine [NAC]) could inhibit such activation. Methods: RAW 264.7 cells and ex vivo lung tissues explants obtained from elastase-induced emphysema animal models were stimulated with cigarette smoking extract (CSE), DEPs, and lipopolysaccharide, and levels of interleukin-1β (IL-1β), caspase-1 and nucleotide-binding oligomerization domain-like receptor (NLR) family members containing the pyrin domain (NLRP3)-inflammasome were assessed by Western blotting and immunohistochemistry...
August 18, 2017: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/28814067/neuro-immune-interactions-in-allergic-diseases-novel-targets-for-therapeutics
#2
Tiphaine Voisin, Amélie Bouvier, Isaac M Chiu
Recent studies have highlighted an emerging role for neuro-immune interactions in mediating allergic diseases. Allergies are caused by an overactive immune response to a foreign antigen. The peripheral sensory and autonomic nervous system densely innervates mucosal barrier tissues including the skin, respiratory tract and gastrointestinal (GI) tract that are exposed to allergens. It is increasingly clear that neurons actively communicate with and regulate the function of mast cells, dendritic cells, eosinophils, Th2 cells and type 2 innate lymphoid cells in allergic inflammation...
June 1, 2017: International Immunology
https://www.readbyqxmd.com/read/28814066/mice-expressing-human-erap1-variants-associated-with-ankylosing-spondylitis-have-altered-t-cell-repertoires-and-nk-cell-functions-as-well-as-increased-in-utero-and-perinatal-mortality
#3
David P W Rastall, Fadel S Alyaquob, Patrick O'Connell, Yuliya Pepelyayeva, Douglas Peters, Sarah Godbehere-Roosa, Cristiane Pereira-Hicks, Yasser A Aldhamen, Andrea Amalfitano
Specific variants of endoplasmic reticulum-associated aminopeptidase 1 (ERAP1) identified by genome-wide association study modify the risk for developing ankylosing spondylitis. We previously confirmed that disease-associated ERAP1 variants have altered enzymatic abilities that can impact upon the production of pro-inflammatory cytokines from cells expressing the same ERAP1 variants. To determine if these ERAP1 variants also impacted immune responses in vivo, we generated two strains of transgenic mice expressing human ERAP1 genes containing non-synonymous single-nucleotide polymorphisms associated with an increased (ERAP1-High) or decreased (ERAP1-Low) risk for developing autoimmune disease...
June 1, 2017: International Immunology
https://www.readbyqxmd.com/read/28813840/a-novel-protocol-to-evaluate-ankle-movements-during-reaching-tasks-using-pedianklebot
#4
Francesca Martelli, Eduardo Palermo, Stefano Rossi
The aim of the study is to design a novel protocol to characterize the ankle movements during dorsal and plantar flexion reaching tasks using the pediAnklebot. Five healthy children were instructed to control a pointer and hit targets appearing on the monitor, by moving their ankle alternatively up and down. The protocol consisted of 60 targets, 30 up and 30 down, reachable via dorsiflexion and plantarflexion movements, respectively. Ankle angular displacements and torques were gathered by encoders and load cells embedded in the robot...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813815/how-do-strength-and-coordination-recovery-interact-after-stroke-a-computational-model-for-informing-robotic-training
#5
Sumner L Norman, Joan Lobo-Prat, David J Reinkensmeyer
Robotic devices can train strength, coordination, or a combination of both. If a robotic device focuses on coordination, what happens to strength recovery, and vice versa? Understanding this interaction could help optimize robotic training. We developed a computational neurorehabilitation model to gain insight into the interaction between strength and coordination recovery after stroke. In the model, the motor system recovers by optimizing the activity of residual corticospinal cells (focally connected, excitatory and inhibitory) and reticulospinal cells (diffusely connected and excitatory) to achieve a motor task...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813781/bee-venom-decreases-lps-induced-inflammatory-responses-in-bovine-mammary-epithelial-cells
#6
Chang Hee Jeong, Wei Nee Cheng, Hyojin Bae, Kyung Woo Lee, Sang Mi Han, Michael C Petriello, Hong Gu Lee, Han Geuk Seo, Sung Gu Han
The world dairy industry has long been challenged by bovine mastitis, an inflammatory disease, which causes economic loss due to decreased milk production and quality. Attempts have been made to prevent or treat this disease with multiple approaches, primarily through increased abuse of antibiotics, but effective natural solutions remain elusive. Bee venom (BV) contains a variety of peptides (e.g., melittin) and that shows multiple bioactivities including prevention of inflammation. Thus, in the current study, it was hypothesized that BV can reduce inflammation in bovine mammary epithelial cells (MAC-T)...
August 17, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28813778/the-bactericidal-effect-of-high-temperature-is-an-essential-resistance-mechanism-of-chicken-macrophage-against-brucella-abortus-infection
#7
Lauren Togonon Arayan, Alisha Wehdnesday Bernardo Reyes, Huynh Tan Hop, Huy Tran Xuan, Eun Jin Baek, Wongi Min, Suk Kim
Knowledge of avian host responses to brucellosis is critical to understanding how avian resists this infection however this mechanism is not well established. On the other hand, temperature has a major involvement in the physiology of living organisms and cell death induced by heat is attributed to protein denaturation. This study demonstrates the direct bactericidal effect of a higher temperature (41ºC) to Brucella (B.) abortus that resulted in the gradual reduction of intracellular bacteria that inhibits bacterial growth within avian macrophage HD11 along an increasing period of time...
August 17, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28813773/a-case-of-ivig-induced-aseptic-chemical-meningitis
#8
Anish Patel, Kalyan Chakravarthy Potu, Tamera Sturm
Intravenous immunoglobulin (IVIG) is a commonly used and generally well-tolerated medication. Common side effects include flu-like symptoms such as fevers, headaches, myalgia, fatigue, and nausea. One of the more rare side effects is aseptic meningitis, with a reported incidence rate of around 0.067 percent of all IVIG infusions. In this paper, we describe a 47-year-old female patient with a history of myasthenia gravis who presented with a headache, neck pain, and neck stiffness while undergoing IVIG infusions for a myasthenia crisis...
March 2017: South Dakota Medicine: the Journal of the South Dakota State Medical Association
https://www.readbyqxmd.com/read/28813716/no-correlation-of-the-disease-severity-of-influenza-a-virus-infection-with-the-rs12252-polymorphism-of-the-interferon-induced-transmembrane-protein-3-gene
#9
Yong-Chan Kim, Byung-Hoon Jeong
The 2009 H1N1 influenza pandemic, which involved a more pathogenic virus than seasonal influenza viruses, rapidly spread around the world and caused many deaths in humans. The members of the interferon-induced transmembrane (IFITM) protein family prevent viral replication and are crucial for defending the host cell against influenza A virus (IAV). Several studies suggest that the CC genotype at the single nucleotide polymorphism (SNP) rs12252 of IFITM3 confers a genetic predisposition to pandemic influenza A in Europeans and Han Chinese, although one study in a British cohort failed to show an association...
August 17, 2017: Intervirology
https://www.readbyqxmd.com/read/28813715/induction-of-cyclooxygenase-2-by-streptococcus-pyogenes-is-mediated-by-cytolysins
#10
Ulrike Blaschke, Andreas Beineke, Johanna Klemens, Eva Medina, Oliver Goldmann
Prostaglandin E2 (PGE2), an arachidonic acid metabolite regulating a broad range of physiological activities, is an important modulator of the severity of infection caused by Streptococcus pyogenes. Here, we investigated the role of streptococcal cytolysin S (SLS) and streptococcal cytolysin O (SLO) in the induction of cyclooxygenase-2 (COX-2), the rate-limiting enzyme in the synthesis of prostaglandins, in in vitro cultured macrophages and during in vivo infection. Macrophages were infected with S. pyogenes wild type or with the isogenic mutant strains deficient in SLS (ΔSLS), SLO (ΔSLO), or both (ΔSLS/ΔSLO), and the expression of COX-2 was determined at the transcriptional and the protein level...
August 17, 2017: Journal of Innate Immunity
https://www.readbyqxmd.com/read/28813705/the-lncrna-tug1-ezh2-axis-promotes-pancreatic-cancer-cell-proliferation-migration-and-emt-phenotype-formation-through-sponging-mir-382
#11
Liang Zhao, Hongwei Sun, Hongru Kong, Zongjing Chen, Bicheng Chen, Mengtao Zhou
BACKGROUND/AIMS: Pancreatic carcinoma (PC) is the one of the most common and malignant cancers worldwide. LncRNA taurine upregulated gene 1 (TUG1) was initially identified as a transcript upregulated by taurine, and the abnormal expression of TUG1 has been reported in many cancers. However, the biological role and molecular mechanism of TUG1 in PC still needs further investigation. METHODS: Quantitative real-time PCR (qRT-PCR) was performed to measure the expression of TUG1 in PC cell lines and tissues...
August 15, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28813704/p38-kinase-sgk1-and-nf-%C3%AE%C2%BAb-dependent-up-regulation-of-na-ca2-exchanger-expression-and-activity-following-tgf%C3%A3-1-treatment-of-megakaryocytes
#12
Tamer Al-Maghout, Lisann Pelzl, Itishri Sahu, Basma Sukkar, Zohreh Hosseinzadeh, Ravi Gutti, Stefan Laufer, Jakob Voelkl, Burkert Pieske, Meinrad Gawaz, Florian Lang
BACKGROUND: TGFβ1, a decisive regulator of megakaryocyte maturation and platelet formation, has previously been shown to up-regulate both, store operated Ca2+ entry (SOCE) and Ca2+ extrusion by Na+/Ca2+ exchange. The growth factor thus augments the increase of cytosolic Ca2+ activity ([Ca2+]i) following release of Ca2+ from intracellular stores and accelerates the subsequent decline of [Ca2+]i. The effect on SOCE is dependent on a signaling cascade including p38 kinase, serum & glucocorticoid inducible kinase SGK1, and nuclear factor NFκB...
August 15, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28813700/regenerative-medicine-approaches-for-age-related-muscle-loss-and-sarcopenia-a-mini-review
#13
Juan Diego Naranjo, Jenna L Dziki, Stephen F Badylak
Sarcopenia is a complex and multifactorial disease that includes a decrease in the number, structure and physiology of muscle fibers, and age-related muscle mass loss, and is associated with loss of strength, increased frailty, and increased risk for fractures and falls. Treatment options are suboptimal and consist of exercise and nutrition as the cornerstone of therapy. Current treatment principles involve identification and modification of risk factors to prevent the disease, but these efforts are of limited value to the elderly individuals currently affected by sarcopenia...
August 17, 2017: Gerontology
https://www.readbyqxmd.com/read/28813698/caspase-independent-pathway-is-related-to-nilotinib-cytotoxicity-in-cultured-cardiomyocytes
#14
Qinghui Yang, Chunhui Zhang, Hong Wei, Zenghui Meng, Guangnan Li, Yuanyuan Xu, Yanjun Chen
BACKGROUND/AIMS: Cardiotoxicity is a predominant side-effect of nilotinib during chronic myeloid leukemia treatment. The underlying molecular mechanism remains unclear. The role of autophagy and mitochondrial signaling was investigated in nilotinib-treated cardiac H9C2 cells. METHODS: Cytotoxicity was assessed using Cell Death Detection kit. Immunoblot and immunofluorescence staining was performed, and cathepsin B and caspase3 activity was assessed in nilotinib-treated H9C2 cells with or without distinct pathway inhibitor or specific siRNA...
August 15, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28813692/enhancing-cell-growth-and-lutein-productivity-of-desmodesmus-sp-f51-by-optimal-utilization-of-inorganic-carbon-sources-and-ammonium-salt
#15
Youping Xie, Xurui Zhao, Jianfeng Chen, Xuqiu Yang, Shih-Hsin Ho, Baobei Wang, Jo-Shu Chang, Ying Shen
The type and concentration of inorganic carbon and nitrogen sources were manipulated to improve cell growth and lutein productivity of Desmodesmus sp. F51. Using nitrate as nitrogen source, the better cell growth and lutein accumulation were obtained under 2.5% CO2 supply when compared to the addition of NaHCO3 or Na2CO3. To solve the pH variation problem of ammonium consumption, the strategy of using dual carbon sources (NaHCO3 and CO2) was explored. A lower bicarbonate-C: ammonium-N ratio led to a lower culture pH as well as lower lutein productivity, but significantly enhanced the auto-flocculation efficiency of the microalgal cells...
August 8, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28813683/tet2-regulates-mast-cell-differentiation-and-proliferation-through-catalytic-and-non-catalytic-activities
#16
Sara Montagner, Cristina Leoni, Stefan Emming, Giulia Della Chiara, Chiara Balestrieri, Iros Barozzi, Viviana Piccolo, Susan Togher, Myunggon Ko, Anjana Rao, Gioacchino Natoli, Silvia Monticelli
No abstract text is available yet for this article.
August 15, 2017: Cell Reports
https://www.readbyqxmd.com/read/28813679/the-tumor-suppressor-p53-limits-ferroptosis-by-blocking-dpp4-activity
#17
Yangchun Xie, Shan Zhu, Xinxin Song, Xiaofang Sun, Yong Fan, Jinbao Liu, Meizuo Zhong, Hua Yuan, Lin Zhang, Timothy R Billiar, Michael T Lotze, Herbert J Zeh, Rui Kang, Guido Kroemer, Daolin Tang
Ferroptosis is a form of regulated cell death that may facilitate the selective elimination of tumor cells. The tumor suppressor p53 (TP53) has been demonstrated to promote ferroptosis via a transcription-dependent mechanism. Here, we show that TP53 limits erastin-induced ferroptosis by blocking dipeptidyl-peptidase-4 (DPP4) activity in a transcription-independent manner. Loss of TP53 prevents nuclear accumulation of DPP4 and thus facilitates plasma-membrane-associated DPP4-dependent lipid peroxidation, which finally results in ferroptosis...
August 15, 2017: Cell Reports
https://www.readbyqxmd.com/read/28813678/therapeutic-antibodies-to-ganglioside-gd2-evolved-from-highly-selective-germline-antibodies
#18
Eric Sterner, Megan L Peach, Marc C Nicklaus, Jeffrey C Gildersleeve
Antibodies play a crucial role in host defense and are indispensable research tools, diagnostics, and therapeutics. Antibody generation involves binding of genomically encoded germline antibodies followed by somatic hypermutation and in vivo selection to obtain antibodies with high affinity and selectivity. Understanding this process is critical for developing monoclonal antibodies, designing effective vaccines, and understanding autoantibody formation. Prior studies have found that antibodies to haptens, peptides, and proteins evolve from polyspecific germline antibodies...
August 15, 2017: Cell Reports
https://www.readbyqxmd.com/read/28813677/the-il-17f-il-17rc-axis-promotes-respiratory-allergy-in-the-proximal-airways
#19
Antonella De Luca, Marilena Pariano, Barbara Cellini, Claudio Costantini, Valeria Rachela Villella, Shyam Sushama Jose, Melissa Palmieri, Monica Borghi, Claudia Galosi, Giuseppe Paolicelli, Luigi Maiuri, Jan Fric, Teresa Zelante
The interleukin 17 (IL-17) cytokine and receptor family is central to antimicrobial resistance and inflammation in the lung. Mice lacking IL-17A, IL-17F, or the IL-17RA subunit were compared with wild-type mice for susceptibility to airway inflammation in models of infection and allergy. Signaling through IL-17RA was required for efficient microbial clearance and prevention of allergy; in the absence of IL-17RA, signaling through IL-17RC on epithelial cells, predominantly by IL-17F, significantly exacerbated lower airway Aspergillus or Pseudomonas infection and allergic airway inflammation...
August 15, 2017: Cell Reports
https://www.readbyqxmd.com/read/28813676/pharmacologic-or-genetic-targeting-of-glutamine-synthetase-skews-macrophages-toward-an-m1-like-phenotype-and-inhibits-tumor-metastasis
#20
Erika M Palmieri, Alessio Menga, Rosa Martín-Pérez, Annamaria Quinto, Carla Riera-Domingo, Giacoma De Tullio, Douglas C Hooper, Wouter H Lamers, Bart Ghesquière, Daniel W McVicar, Attilio Guarini, Massimiliano Mazzone, Alessandra Castegna
Glutamine-synthetase (GS), the glutamine-synthesizing enzyme from glutamate, controls important events, including the release of inflammatory mediators, mammalian target of rapamycin (mTOR) activation, and autophagy. However, its role in macrophages remains elusive. We report that pharmacologic inhibition of GS skews M2-polarized macrophages toward the M1-like phenotype, characterized by reduced intracellular glutamine and increased succinate with enhanced glucose flux through glycolysis, which could be partly related to HIF1α activation...
August 15, 2017: Cell Reports
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