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Lung immunology

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https://www.readbyqxmd.com/read/28317087/imaging-and-clinicopathological-features-of-nivolumab-related-cholangitis-in-patients-with-non-small-cell-lung-cancer
#1
Hisato Kawakami, Junko Tanizaki, Kaoru Tanaka, Koji Haratani, Hidetoshi Hayashi, Masayuki Takeda, Ken Kamata, Mamoru Takenaka, Masatomo Kimura, Takaaki Chikugo, Takao Sato, Masatoshi Kudo, Akihiko Ito, Kazuhiko Nakagawa
Background Nivolumab demonstrates promising efficacy for the treatment of non-small cell lung cancer and other malignancies. The clinical benefit of nivolumab, however, may be hampered by specific immune-related adverse events (irAEs), and little is known regarding nivolumab-related cholangitis. Methods A computerized search of our clinical database identified 3 metastatic non-small cell lung cancer patients with nivolumab-related cholangitis. All patients were treated with intravenous nivolumab monotherapy (3...
March 20, 2017: Investigational New Drugs
https://www.readbyqxmd.com/read/28303960/the-immune-correlates-of-protection-for-an-avian-influenza-h5n1-vaccine-in-the-ferret-model-using-oil-in-water-adjuvants
#2
Sook-San Wong, Susu Duan, Jennifer DeBeauchamp, Mark Zanin, Lisa Kercher, Stephanie Sonnberg, Thomas Fabrizio, Trushar Jeevan, Jeri-Carol Crumpton, Christine Oshansky, Yilun Sun, Li Tang, Paul Thomas, Richard Webby
Because of the pathogenicity and low incidence of avian influenza virus infections in humans, the immune correlates of protection for avian influenza vaccines cannot be determined from clinical studies. Here, we used the ferret model to address this for an avian influenza H5N1 vaccine. Using oil-in-water adjuvants, we generated groups of ferrets with undetectable (geometric mean titer [GMT] < 10), low (GMT = 28.3), or high (GMT > 761.1) hemagglutination-inhibition (HAI) titers to the A/Viet Nam/1203/2004 (H5N1) virus...
March 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28303311/-immunotherapy-of-cancer-with-checkpoint-inhibitors-not-only-in-malignant-melanoma
#3
A Neubauer
The newest weapon in cancer therapy is checkpoint inhibition, which is the result of basic immunology research. The success of this therapy is based on the fact that upon light microscopy, many solid tumors harbor lymphocytic cells infiltrating the tumor (TILs), and in many solid tumors, the presence of these TILs are prognostic. Ipilimumab was the first monoclonal antibody developed against a target present on T cells after becoming activated, CTLA-4. In malignant melanoma, ipilimumab showed its beneficial effect as compared to a placebo peptide...
March 16, 2017: Der Internist
https://www.readbyqxmd.com/read/28301273/a-cross-sectional-study-of-changes-in-markers-of-immunological-effects-and-lung-health-due-to-exposure-to-multi-walled-carbon-nanotubes
#4
Jelle Vlaanderen, Anjoeka Pronk, Nathaniel Rothman, Allan Hildesheim, Debra Silverman, H Dean Hosgood, Suzanne Spaan, Eelco Kuijpers, Lode Godderis, Peter Hoet, Qing Lan, Roel Vermeulen
Background Multi Wall Carbon nanotubes (MWCNTs) are manufactured nanomaterials to which workers and the general population will be increasingly exposed in coming years. Little is known about potential human health effects of exposure to MWCNTs, but effects on the lung and the immune system have been reported in animal and mechanistic studies. Objectives We conducted a cross-sectional study to assess the association between occupational exposure to MWCNTs and effects on lung health and the immune system. Methods We assessed fifty-one immune markers and three pneumoproteins in serum, complete blood cell counts (CBC), fractional exhaled nitric oxide (FENO), and lung function among twenty-two workers of a MWCNT producing facility and thirty-nine age- and gender-matched, unexposed controls...
March 16, 2017: Nanotoxicology
https://www.readbyqxmd.com/read/28295019/m2e-tetramer-specific-memory-cd4-t-cells-are-broadly-protective-against-influenza-infection
#5
D G Eliasson, A Omokanye, K Schön, U A Wenzel, V Bernasconi, M Bemark, A Kolpe, K El Bakkouri, T Ysenbaert, L Deng, W Fiers, X Saelens, N Lycke
Matrix protein 2 ectodomain (M2e) is considered an attractive component of a broadly protective, universal influenza A vaccine. Here we challenge the canonical view that antibodies against M2e are the prime effectors of protection. Intranasal immunizations of Balb/c mice with CTA1-3M2e-DD-generated M2e-specific memory CD4 T cells that were I-A(d) restricted and critically protected against infection, even in the complete absence of antibodies, as observed in JhD mice. Whereas some M2e-tetramer-specific memory CD4 T cells resided in spleen and lymph nodes, the majority were lung-resident Th17 cells, that rapidly expanded upon a viral challenge infection...
March 15, 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/28294434/immunologic-regulatory-effects-of-human-umbilical-cord-blood-derived-mesenchymal-stem-cells-in-a-murine-ovalbumin-asthma-model
#6
Sung-Yoon Kang, Da-Eun Park, Woo-Jung Song, Bo-Ram Bae, Ji-Won Lee, Kyoung-Hee Sohn, Hyun-Seung Lee, Hye-Ryun Kang, Heung-Woo Park, Yoon-Seok Chang, Soo-Jin Choi, Won-Il Oh, Kyung-Up Min, Sang-Heon Cho
BACKGROUND: Mesenchymal stem cells (MSCs) have multiple immunomodulatory properties and hold therapeutic potential for inflammatory diseases. However, the therapeutic and immunologic effects of human umbilical cord blood-derived MSCs (huMSCs) remain largely unexamined for asthma. OBJECTIVE: This study was to investigate the immunomodulatory properties of huMSCs in an ovalbumin (OVA)-induced murine asthma model. METHODS: Mice were injected intraperitoneally with OVA and an aluminum hydroxide adjuvant...
March 14, 2017: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28287530/open-tracheostomy-gastric-acid-aspiration-murine-model-of-acute-lung-injury-results-in-maximal-acute-nonlethal-lung-injury
#7
Ravi Alluri, Hilliard L Kutscher, Barbara A Mullan, Bruce A Davidson, Paul R Knight
Acid pneumonitis is a major cause of sterile acute lung injury (ALI) in humans. Acid pneumonitis spans the clinical spectrum from asymptomatic to acute respiratory distress syndrome (ARDS), characterized by neutrophilic alveolitis, and injury to both alveolar epithelium and vascular endothelium. Clinically, ARDS is defined by acute onset of hypoxemia, bilateral patchy pulmonary infiltrates and non-cardiogenic pulmonary edema. Human studies have provided us with valuable information about the physiological and inflammatory changes in the lung caused by ARDS, which has led to various hypotheses about the underling mechanisms...
February 26, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28285639/denosumab-for-the-treatment-of-adult-multisystem-langerhans-cell-histiocytosis
#8
Polyzois Makras, Marina Tsoli, Athanasios D Anastasilakis, Maria Thanou, Gregory Kaltsas
PURPOSE: An etiological treatment is currently lacking for Langerhans Cell Histiocytosis (LCH). Receptor activator of nuclear factor κB ligand (RANKL) appears to play a central role in the lesional immunological process inducing compensatory osteoprotegerin (OPG) activation. In a preliminary study we aimed to evaluate for the first time the use of denosumab, a RANKL inhibitor, as a targeted treatment strategy in LCH in order to support and enhance endogenous OPG action in order to control or alter the lesional immunological process...
April 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28285170/novel-risk-factors-related-to-cancer-in-scleroderma
#9
REVIEW
David Bernal-Bello, Jaime García de Tena, Alfredo Guillén-Del Castillo, Albert Selva-O'Callaghan, Eduardo L Callejas-Moraga, Ana María Marín-Sánchez, Vicent Fonollosa-Pla, Carmen Pilar Simeón-Aznar
OBJECTIVE: Emerging data have shown an increased risk of malignancy among patients diagnosed with systemic sclerosis (SSc) so identification of risk factors linking both disorders might have prognostic implications. The aim of this study was to assess the clinical and treatment-related risk factors for cancer in a single-center cohort of patients with SSc. METHODS: Demographic, clinical, capillaroscopic, immunological and treatment-related data from 432 consecutive SSc patients were retrospectively analyzed...
March 8, 2017: Autoimmunity Reviews
https://www.readbyqxmd.com/read/28280324/systemic-and-immunotoxicity-of-pristine-and-pegylated-multi-walled-carbon-nanotubes-in-an-intravenous-28-days-repeated-dose-toxicity-study
#10
Ting Zhang, Meng Tang, Shanshan Zhang, Yuanyuan Hu, Han Li, Tao Zhang, Yuying Xue, Yuepu Pu
The numerous increasing use of carbon nanotubes (CNTs) derived from nanotechnology has raised concerns about their biosafety and potential toxicity. CNTs cause immunologic dysfunction and limit the application of CNTs in biomedicine. The immunological responses induced by pristine multi-walled carbon nanotubes (p-MWCNTs) and PEGylated multi-walled carbon nanotubes (MWCNTs-PEG) on BALB/c mice via an intravenous administration were investigated. The results reflect that the p-MWCNTs induced significant increases in spleen, thymus, and lung weight...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28273842/immunological-features-of-respiratory-syncytial-virus-caused-pneumonia-implications-for-vaccine-design
#11
REVIEW
Emma Rey-Jurado, Alexis M Kalergis
The human respiratory syncytial virus (hRSV) is the causative agent for high rates of hospitalizations due to viral bronchiolitis and pneumonia worldwide. Such a disease is characterized by an infection of epithelial cells of the distal airways that leads to inflammation and subsequently to respiratory failure. Upon infection, different pattern recognition receptors recognize the virus and trigger the innate immune response against the hRSV. Further, T cell immunity plays an important role for virus clearance...
March 4, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28272391/stabilizing-short-lived-schiff-base-derivatives-of-5-aminouracils-that-activate-mucosal-associated-invariant-t-cells
#12
Jeffrey Y W Mak, Weijun Xu, Robert C Reid, Alexandra J Corbett, Bronwyn S Meehan, Huimeng Wang, Zhenjun Chen, Jamie Rossjohn, James McCluskey, Ligong Liu, David P Fairlie
Mucosal-associated invariant T (MAIT) cells are activated by unstable antigens formed by reactions of 5-amino-6-D-ribitylaminouracil (a vitamin B2 biosynthetic intermediate) with glycolysis metabolites such as methylglyoxal. Here we show superior preparations of antigens in dimethylsulfoxide, avoiding their rapid decomposition in water (t1/2 1.5 h, 37 °C). Antigen solution structures, MAIT cell activation potencies (EC50 3-500 pM), and chemical stabilities are described. Computer analyses of antigen structures reveal stereochemical and energetic influences on MAIT cell activation, enabling design of a water stable synthetic antigen (EC50 2 nM)...
March 8, 2017: Nature Communications
https://www.readbyqxmd.com/read/28267623/thymic-nf-%C3%AE%C2%BAb-inducing-kinase-nik-regulates-cd4-t-cell-elicited-liver-injury-and-fibrosis-in-mice
#13
Hong Shen, Liang Sheng, Yi Xiong, Yeung-Hyen Kim, Lin Jiang, Zheng Chen, Yong Liu, Kalyani Pyaram, Cheong-Hee Chang, Liangyou Rui
BACKGROUND & AIMS: The liver is an immunologically-privileged organ. Breakdown of liver immune privilege has been reported in chronic liver disease; however, the role of adaptive immunity in liver injury is poorly defined. NIK is known to regulate immune tissue development, but its role in maintaining liver homeostasis remains unknown. This study aimed to assess the role of NIK, particularly thymic NIK, in regulating liver adaptive immunity. METHODS: NIK was deleted systemically or conditionally using the cre/loxp system...
March 3, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/28263743/deficiency-of-psgl-1-accelerates-bleomycin-blm-induced-lung-fibrosis-and-inflammation-in-mice-through-activating-pi3k-akt
#14
Xiang Han, Shu-Ming Wang
Pulmonary fibrosis is a disease characterized by unremitting fibrosis accumulation in the lung, causing respiratory failure eventually. Presently, the immunological mechanism underlying pulmonary fibrosis still remains unclear. P-selectin glycoprotein ligand-1 (Psgl-1) is a leukocyte ligand that regulates recruitment and activation of multiple cell types, which is associated with phosphatidylinositol 3-kinase (PI3K)/AKT signaling pathway activation. In the present study, we attempted to clarify the AKT activation induced by Psgl-1 knockout in mice with bleomycin (BLM)-induced pulmonary fibrosis...
March 3, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28260909/update-on-targeted-therapies-for-advanced-non-small-cell-lung-cancer-nivolumab-in-context
#15
REVIEW
Alexander D Le, Saeed K Alzghari, Gary W Jean, Ninh M La-Beck
While the initial treatment of non-small cell lung cancer (NSCLC) usually relies on surgical resection followed by systemic cytotoxic chemotherapy and/or radiation therapy, recent advances in understanding of NSCLC biology and immunology have spurred the development of numerous targeted therapies. In particular, a class of immune modulatory drugs targeting the immune checkpoint pathways has demonstrated remarkable durable remissions in a select minority of advanced NSCLC patients, potentially heralding the elusive "cancer cure"...
2017: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/28260794/aberrant-th2-inflammation-drives-dysfunction-of-alveolar-macrophages-and-susceptibility-to-bacterial-pneumonia
#16
Emily K Moser, Natania S Field, Paula M Oliver
The ubiquitin ligase, Itch, is required to prevent autoinflammatory disease in mice and humans. Itch-deficient mice develop lethal pulmonary inflammation characterized by the production of Th2 cytokines (for example, interleukin-4 (IL-4)); however, the contribution of Itch to immune defense against respiratory pathogens has not been determined. We found that Itch-deficient mice were highly susceptible to intranasal infection with the respiratory pathogen Klebsiella pneumoniae. Infected Itch-deficient mice exhibited increased immune cell infiltration, cytokine levels and bacterial burden in the respiratory tract compared with control mice...
March 6, 2017: Cellular & Molecular Immunology
https://www.readbyqxmd.com/read/28251581/chitin-and-its-effects-on-inflammatory-and-immune-responses
#17
REVIEW
Daniel Elieh Ali Komi, Lokesh Sharma, Charles S Dela Cruz
Chitin, a potential allergy-promoting pathogen-associated molecular pattern (PAMP), is a linear polymer composed of N-acetylglucosamine residues which are linked by β-(1,4)-glycosidic bonds. Mammalians are potential hosts for chitin-containing protozoa, fungi, arthropods, and nematodes; however, mammalians themselves do not synthetize chitin and thus it is considered as a potential target for recognition by mammalian immune system. Chitin is sensed primarily in the lungs or gut where it activates a variety of innate (eosinophils, macrophages) and adaptive immune cells (IL-4/IL-13 expressing T helper type-2 lymphocytes)...
March 1, 2017: Clinical Reviews in Allergy & Immunology
https://www.readbyqxmd.com/read/28248800/mixed-connective-tissue-disease-and-epitope-spreading-an-historical-cohort-study
#18
Laura Escolà-Vergé, Iago Pinal-Fernandez, Andreu Fernandez-Codina, Eduardo L Callejas-Moraga, Juan Espinosa, Ana Marin, Moises Labrador-Horrillo, Albert Selva-O'Callaghan
OBJECTIVES: Mixed connective tissue disease (MCTD) is characterized by the presence of anti-U1-snRNP autoantibodies and a variable set of associated clinical features. Some MCTD patients test positive over time to autoantibodies against Sm, proteins spatially related with U1-snRNP. This situation has been attributed to expanding of the autoimmune response by a phenomenon known as epitope spreading. Our aim was to study the frequency of this phenomenon in MCTD patients and the specific clinical features of those with epitope spreading...
February 28, 2017: Journal of Clinical Rheumatology: Practical Reports on Rheumatic & Musculoskeletal Diseases
https://www.readbyqxmd.com/read/28245597/myc-in-regulating-immunity-metabolism-and-beyond
#19
REVIEW
J N Rashida Gnanaprakasam, Ruoning Wang
Myelocytomatosis oncogene (MYC) family members, including cellular MYC (c-Myc), neuroblastoma derived MYC (MYCN), and lung carcinoma derived MYC (MYCL), have all been implicated as key oncogenic drivers in a broad range of human cancers. Beyond cancer, MYC plays an important role in other physiological and pathological processes, namely immunity and immunological diseases. MYC largely functions as a transcription factor that promotes the expression of numerous target genes to coordinate death, proliferation, and metabolism at the cellular, tissue, and organismal levels...
February 25, 2017: Genes
https://www.readbyqxmd.com/read/28240945/evaluation-of-contractile-phenotype-in-airway-smooth-muscle-cells-isolated-from-endobronchial-biopsy-and-tissue-specimens-from-horses
#20
Amandine Vargas, Aude Peltier, Jean Dubé, Josiane Lefebvre-Lavoie, Véronique Moulin, Francine Goulet, Jean-Pierre Lavoie
OBJECTIVE To develop a method to maintain the initial phenotype of airway smooth muscle (ASM) cells isolated from equine endobronchial biopsy specimens in long-term cell culture. SAMPLE Endobronchial tissue specimens (8 to 10/horse) collected from the lungs of previously healthy horses at necropsy (n = 12) and endobronchial biopsy specimens collected from standing, sedated, heaves-affected horses in clinical remission of the disease (5) and control horses (4). PROCEDURES A sampling protocol was developed to recover and maintain a contractile phenotype in ASM cells from endobronchial specimens from freshly harvested equine lungs and from healthy and heaves-affected horses...
March 2017: American Journal of Veterinary Research
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