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tertiary lymphoid organ

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https://www.readbyqxmd.com/read/28875091/demographics-of-head-and-neck-cancer-patients-a-single-institution-experience
#1
George S Stoyanov, Martina Kitanova, Deyan L Dzhenkov, Peter Ghenev, Nikolay Sapundzhiev
Introduction Head and neck cancer (HNC) comprises a diverse group of oncological entities, originating from various tissue types and organ localizations, situated in the topographical regions of the head and neck (H&N). This single institution retrospective study was aimed at establishing the HNC patient demographics and categorizing the individual incidence of H&N malignancies, regarding their organ of origin and main histopathological type. Materials and methods All histologically verified cases of HNC from a single tertiary referral center were reviewed in a descriptive retrospective manner...
July 2, 2017: Curēus
https://www.readbyqxmd.com/read/28842670/the-cellular-and-molecular-determinants-of-emphysematous-destruction-in-copd
#2
Masaru Suzuki, Marc A Sze, Joshua D Campbell, John F Brothers, Marc E Lenburg, John E McDonough, W Mark Elliott, Joel D Cooper, Avrum Spira, James C Hogg
The introduction of microCT has made it possible to show that the terminal bronchioles are narrowed and destroyed before the onset of emphysematous destruction in COPD. This report extends those observations to the cellular and molecular level in the centrilobular phenotype of emphysematous destruction in lungs donated by persons with very severe COPD (n = 4) treated by lung transplantation with unused donor lungs (n = 4) serving as controls. These lung specimens provided companion samples to those previously examined by microCT (n = 61) that we examined using quantitative histology (n = 61) and gene expression profiling (n = 48)...
August 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28837798/lymphotoxins-promote-the-progression-of-human-lymphatic-malformation-by-enhancing-lymphatic-endothelial-cell-proliferation
#3
Jie-Gang Yang, Yan-Fang Sun, Ke-Fei He, Jian-Gang Ren, Zhuo-Jue Liu, Bing Liu, Wei Zhang, Yi-Fang Zhao
Formation of inflammation-related tertiary lymphoid organs promotes human lymphatic malformation (LM) development. However, the role of lymphotoxins (LTs) and LT-related inducible ligand, the crucial mediators for tertiary lymphoid organ formation, is undetermined in LMs. Herein, we show that LTs and LT-related inducible ligand promote LM development by enhancing lymphatic endothelial cell (LEC) proliferation via activating NF-κB pathways. The expression of LTs and their receptors was increased in LMs, especially the infected ones, when compared with normal skins...
August 21, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28830544/il-18-associated-with-lung-lymphoid-aggregates-drives-ifn%C3%AE-production-in-severe-copd
#4
Emmanuel Briend, G John Ferguson, Michiko Mori, Gautam Damera, Katherine Stephenson, Natasha A Karp, Sanjay Sethi, Christine K Ward, Matthew A Sleeman, Jonas S Erjefält, Donna K Finch
BACKGROUND: Increased interferon gamma (IFNγ) release occurs in Chronic Obstructive Pulmonary Disease (COPD) lungs. IFNγ supports optimal viral clearance, but if dysregulated could increase lung tissue destruction. METHODS: The present study investigates which mediators most closely correlate with IFNγ in sputum in stable and exacerbating disease, and seeks to shed light on the spatial requirements for innate production of IFNγ, as reported in mouse lymph nodes, to observe whether such microenvironmental cellular organisation is relevant to IFNγ production in COPD lung...
August 22, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28774888/development-of-autoimmune-pancreatitis-is-independent-of-cdkn1a-p21-mediated-pancreatic-inflammation
#5
Gitta M Seleznik, Theresia Reding, Lukas Peter, Anurag Gupta, Sabrina G Steiner, Sabrina Sonda, Caroline S Verbeke, Emmanuel Dejardin, Igor Khatkov, Stephan Segerer, Mathias Heikenwalder, Rolf Graf
OBJECTIVE: Chronic pancreatitis (CP) and autoimmune pancreatitis (AIP) are characterised by different inflammatory processes. If pancreatic inflammation is a prerequisite for autoimmunity is still unclear. AIP is considered mostly a T cell-mediated disease; however, in induction of CP, macrophages play a pivotal role. p21-a member of cyclin-dependent kinase inhibitors-can influence inflammatory processes, in particular can regulate T cell activation and promote macrophage development...
August 3, 2017: Gut
https://www.readbyqxmd.com/read/28738885/differential-effects-of-fty720-on-the-b-cell-compartment-in-a-mouse-model-of-multiple-sclerosis
#6
Kathrin Bail, Quirin Notz, Damiano M Rovituso, Andrea Schampel, Marie Wunsch, Tobias Koeniger, Verena Schropp, Richa Bharti, Claus-Juergen Scholz, Konrad U Foerstner, Christoph Kleinschnitz, Stefanie Kuerten
BACKGROUND: MP4-induced experimental autoimmune encephalomyelitis (EAE) is a mouse model of multiple sclerosis (MS), which enables targeted research on B cells, currently much discussed protagonists in MS pathogenesis. Here, we used this model to study the impact of the S1P1 receptor modulator FTY720 (fingolimod) on the autoreactive B cell and antibody response both in the periphery and the central nervous system (CNS). METHODS: MP4-immunized mice were treated orally with FTY720 for 30 days at the peak of disease or 50 days after EAE onset...
July 24, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28701569/distinct-tertiary-lymphoid-structure-associations-and-their-prognostic-relevance-in-her2-positive-and-negative-breast-cancers
#7
Xia Liu, Julia Y S Tsang, Thazin Hlaing, Jintao Hu, Yun-Bi Ni, Siu Ki Chan, Sai Yin Cheung, Gary M Tse
BACKGROUND: The presence of tumor infiltrating lymphocytes (TIL) is associated with favorable prognosis. Recent evidence suggested that not only their density, but also the spatial organization as tertiary lymphoid structures (TLS), play a key role in determining patient survival. MATERIALS AND METHODS: In a cohort of 248 breast cancers, the clinicopathologic association and prognostic role of TLS was examined. RESULTS: Tertiary lymphoid structures were associated with higher tumor grade, apocrine phenotype, necrosis, extensive in situ component, lymphovascular invasion (LVI), and high TIL...
July 12, 2017: Oncologist
https://www.readbyqxmd.com/read/28688665/b-cells-in-tertiary-lymphoid-structures-are-associated-with-favorable-prognosis-in-gastric-cancer
#8
Chie Sakimura, Hiroaki Tanaka, Takahiro Okuno, Soichiro Hiramatsu, Kazuya Muguruma, Kosei Hirakawa, Hideki Wanibuchi, Masaichi Ohira
BACKGROUND: The role of tumor-infiltrating B cells in the tumor microenvironment is still unclear. Recent studies have reported that B cells and tertiary lymphoid structures (TLSs) that contain B cell follicles correlate with the favorable prognosis of cancer patients. The aim of this study was to investigate the association between tumor-infiltrating B cells and clinicopathological features in gastric cancer. METHODS: Tumor blocks were obtained from 226 patients with stage Ib to stage IV gastric cancer...
July 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28680760/tbet-and-il-36%C3%AE-cooperate-in-therapeutic-dc-mediated-promotion-of-ectopic-lymphoid-organogenesis-in-the-tumor-microenvironment
#9
Aliyah M Weinstein, Lu Chen, Emily A Brzana, Prashanti R Patil, Jennifer L Taylor, Kellsye L Fabian, Callen T Wallace, Sabrina D Jones, Simon C Watkins, Binfeng Lu, David F Stroncek, Timothy L Denning, Yang-Xin Fu, Peter A Cohen, Walter J Storkus
We have previously reported that direct injection of dendritic cells (DC) engineered to express the Type-1 transactivator Tbet (i.e., DC.Tbet) into murine tumors results in antitumor efficacy in association with the development of structures resembling tertiary lymphoid organs (TLO) in the tumor microenvironment (TME). These TLO contained robust infiltrates of B cells, DC, NK cells, and T cells in proximity to PNAd(+) blood vessels; however, they were considered incomplete, since the recruited B cells failed to organize into classic germinal center-like structures...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28652258/response-to-artery-tertiary-lymphoid-organs-in-giant-cell-arteritis-are-not-exclusively-located-in-the-media-of-temporal-arteries-by-graver-et-al
#10
Francesco Ciccia, Aroldo Rizzo, Carlo Salvarani, Giovanni Triolo
No abstract text is available yet for this article.
June 26, 2017: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/28631636/profiling-of-peripheral-t-cell-lymphomas-in-kerala-south-india-a-5-year-study
#11
Rekha A Nair, Jayasudha Arundhathi Vasudevan, Priya Mary Jacob, Renu Sukumaran
BACKGROUND: Peripheral T-cell lymphomas (PTCLs) are non-Hodgkin's lymphomas (NHLs) with considerable variation in incidence across the world. They show a wide variety of clinicopathological features and generally associated with poor clinical outcome. Lymphoma data from different geographic regions will definitely aid in routine clinical practice and research work. PTCLs are reported with a higher frequency in Asia as compared to Western countries. OBJECTIVE: The objective of this study was to analyze the frequency and distribution of PTCLs diagnosed in a tertiary care cancer center in Kerala...
April 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/28621322/reliability-of-tumor-infiltrating-lymphocyte-and-tertiary-lymphoid-structure-assessment-in-human-breast-cancer
#12
Laurence Buisseret, Christine Desmedt, Soizic Garaud, Marco Fornili, Xiaoxiao Wang, Gert Van den Eyden, Alexandre de Wind, Sebastien Duquenne, Anais Boisson, Celine Naveaux, Francoise Rothé, Sandrine Rorive, Christine Decaestecker, Denis Larsimont, Martine Piccart-Gebhart, Elia Biganzoli, Christos Sotiriou, Karen Willard-Gallo
The presence of tumor-infiltrating lymphocytes (TIL), reflecting host immune activity, is frequently correlated with better clinical outcomes, particularly in HER2-positive and triple-negative breast cancer. Recent findings suggest that organization of immune infiltrates in tertiary lymphoid structures also has a beneficial effect on survival. This study investigated inter- and intra-observer variation in TIL assessment using conventional hematoxylin-eosin versus immunohistochemical staining to identify immune cells...
September 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/28567040/a-unique-cellular-and-molecular-microenvironment-is-present-in-tertiary-lymphoid-organs-of-patients-with-spontaneous-prostate-cancer-regression
#13
María de la Luz García-Hernández, Norma Ofelia Uribe-Uribe, Ricardo Espinosa-González, W Martin Kast, Shabaana A Khader, Javier Rangel-Moreno
OBJECTIVE: Multiple solid cancers contain tertiary lymphoid organs (TLO). However, it is unclear whether they promote tumor rejection, facilitate tumor evasion, or simply whether they are a byproduct of chronic inflammation. We hypothesize that although chronic inflammation induces TLO formation, the tumor milieu can modulate TLO organization and functions in prostate cancer. Therefore, our study seeks to elucidate the cellular and molecular signatures in unique prostatectomy specimens from evanescent carcinoma patients to identify markers of cancer regression, which could be harnessed to modulate local immunosuppression or potentially enhance TLO function...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28497350/synovial-cellular-and-molecular-markers-in-rheumatoid-arthritis
#14
REVIEW
M Asif Amin, David A Fox, Jeffrey H Ruth
The profound alterations in the structure, cellular composition, and function of synovial tissue in rheumatoid arthritis (RA) are the basis for the persistent inflammation and cumulative joint destruction that are hallmarks of this disease. In RA, the synovium develops characteristics of a tertiary lymphoid organ, with extensive infiltration of lymphocytes and myeloid cells. Concurrently, the fibroblast-like synoviocytes undergo massive hyperplasia and acquire a tissue-invasive phenotype. In this review, we summarize key components of these processes, focusing on recently-described roles of selected molecular markers of these cellular components of RA synovitis...
June 2017: Seminars in Immunopathology
https://www.readbyqxmd.com/read/28479485/new-insights-into-the-pathogenesis-of-giant-cell-arteritis
#15
REVIEW
Francesco Ciccia, Aroldo Rizzo, Angelo Ferrante, Giuliana Guggino, Stefania Croci, Alberto Cavazza, Carlo Salvarani, Giovanni Triolo
Giant cell arteritis (GCA) is an inflammatory chronic disease occurring exclusively in elderly individuals. Until recently, the disease has been considered a unique disease resulting from the interaction in the walls of susceptible arteries, between an unknown infectious agents with local dendritic cells (DCs), activated CD4 T cells and effector macrophages. Recent evidence has shown that this view was too simplistic and has clarified many of the pathogenetic aspects of the disease. Many genetic studies recently published have identified different new genes, including cytokines, adhesion molecules and regulators of innate immunity, as crucial players in the development and progression of GCA...
July 2017: Autoimmunity Reviews
https://www.readbyqxmd.com/read/28446556/bacteria-driven-peribronchial-lymphoid-neogenesis-in-bronchiectasis-and-cystic-fibrosis
#16
Justine Frija-Masson, Clémence Martin, Lucile Regard, Marie-Noëlle Lothe, Lhousseine Touqui, Aurélie Durand, Bruno Lucas, Diane Damotte, Marco Alifano, Isabelle Fajac, Pierre-Régis Burgel
We aimed to characterise lymphoid neogenesis in bronchiectasis and cystic fibrosis (CF) lungs and to examine the role of bacterial infection.Lymphoid aggregates were examined using immunohistochemical staining and morphometric analysis in surgical lung sections obtained from nonsmokers and patients with bronchiectasis or CF. Sterile, Pseudomonas aeruginosa- or Staphylococcus aureus-coated agarose beads were instilled intratracheally in mice. Kinetics of lymphoid neogenesis and chemokine expression were examined over 14 days...
April 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28349486/tissue-digestion-for-stromal-cell-and-leukocyte-isolation
#17
Saba Nayar, Joana Campos, Nathalie Steinthal, Francesca Barone
Tissue mechanical disruption is often not sufficient to disrupt cell-to-cell interactions; this is particularly relevant for stromal cells that are embedded within the extracellular matrix. For this reason, different enzyme combinations have been described to enable the isolation of single-cell populations, particularly stromal cells. This chapter aims to describe different methods used for enzymatic digestion of stromal cell and leukocyte populations from secondary and tertiary lymphoid organs. Collagenase D and P and collagenase D and dispase protocols provide a good yield of stromal cells, while a collagenase dispase-only protocol should be used if the main aim of the technique is to retrieve leukocyte populations...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28344775/tertiary-lymphoid-organs-in-systemic-autoimmune-diseases-%C3%A2-pathogenic-or-protective
#18
REVIEW
William D Shipman, Dragos C Dasoveanu, Theresa T Lu
Tertiary lymphoid organs are found at sites of chronic inflammation in autoimmune diseases such as systemic lupus erythematosus and rheumatoid arthritis. These organized accumulations of T and B cells resemble secondary lymphoid organs and generate autoreactive effector cells. However, whether they contribute to disease pathogenesis or have protective functions is unclear. Here, we discuss how tertiary lymphoid organs can generate potentially pathogenic cells but may also limit the extent of the response and damage in autoimmune disease...
2017: F1000Research
https://www.readbyqxmd.com/read/28322850/absence-of-functional-fetal-regulatory-t-cells-in-humans-causes-in-utero-organ-specific-autoimmunity
#19
Eric J Allenspach, Laura S Finn, Mara H Rendi, Ahmet Eken, Akhilesh K Singh, Mohamed Oukka, Sean D Taylor, Matthew C Altman, Corinne L Fligner, Hans D Ochs, David J Rawlings, Troy R Torgerson
No abstract text is available yet for this article.
August 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28321222/editorial-tertiary-lymphoid-organs-tlos-powerhouses-of-disease-immunity
#20
EDITORIAL
Changjun Yin, Sarajo Mohanta, Pasquale Maffia, Andreas J R Habenicht
No abstract text is available yet for this article.
2017: Frontiers in Immunology
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