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https://www.readbyqxmd.com/read/28231294/association-of-neutrophil-lymphocyte-ratio-and-t-lymphocytes-with-the-pathogenesis-and-progression-of-hbv-associated-primary-liver-cancer
#1
Xiaoli Liu, Lingling He, Junyan Han, Lijia Wang, Mengge Li, Yuyong Jiang, Xianbo Wang, Zhiyun Yang
BACKGROUND: The neutrophil-lymphocyte ratio (NLR) is a new prognostic predictor for patients with liver cancer. The association of NLR and T lymphocytes with the pathogenesis and progression of liver cancer is poorly understood. METHODS: Seventy-three patients with hepatitis B virus (HBV)-associated primary liver cancer (HBV-PLC), 50 patients with HBV-associated liver cirrhosis (HBV-LC) and 37 patients with chronic HBV infection (CHB) were prospectively enrolled from July 1, 2013 to February 28, 2014 in Beijing Ditan Hospital, Capital Medical University (Beijing, China)...
2017: PloS One
https://www.readbyqxmd.com/read/28228560/expression-of-il-22-in-the-skin-causes-th2-biased-immunity-epidermal-barrier-dysfunction-and-pruritus-via-stimulating-epithelial-th2-cytokines-and-the-grp-pathway
#2
Hongfei Lou, Jingning Lu, Eun Byul Choi, Min Hee Oh, Mingeum Jeong, Sara Barmettler, Zhou Zhu, Tao Zheng
Increased expression of Th22 cytokine IL-22 is a characteristic finding in atopic dermatitis (AD). However, the specific role of IL-22 in the pathogenesis of AD in vivo has yet to be elucidated. Consistent with observations in human AD, IL-22 was significantly increased in the AD skin of mice after epicutaneous sensitization to house dust mite allergen. Utilizing a skin-specific inducible transgenic system, we show in the present study that expression of IL-22 in the skin of mice caused an AD-like phenotype characterized by chronic pruritic dermatitis associated with Th2-biased local and systemic immune responses, downregulation of epidermal differentiation complex genes, and enhanced dermatitis upon epicutaneous allergen exposure...
February 22, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28228556/activation-and-functional-specialization-of-regulatory-t-cells-lead-to-the-generation-of-foxp3-instability
#3
Zhongmei Zhang, Wei Zhang, Jie Guo, Qianchong Gu, Xueping Zhu, Xuyu Zhou
Accumulating evidence suggests that Foxp3(+) cells can downregulate the expression of Foxp3, but whether thymically derived regulatory T cells (tTregs; especially committed tTregs) are capable of downregulating Foxp3 expression and being reprogrammed into other T effector cells remains controversial. Using a novel tTreg lineage-tracing mouse line, we were able to label epigenetically stable Foxp3(+) cells derived from the thymus and demonstrate that mature tTregs are stable under homeostatic conditions. However, TCR engagement and sequential functional specialization of tTregs led to the generation of Foxp3 instability and reprogramming into the Th lineage...
February 22, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28226225/thymic-epithelial-cells
#4
Jakub Abramson, Graham Anderson
IntrathymicTcell development is a complex process that depends upon continuous guidance from thymus stromal cell microenvironments. The thymic epithelium within the thymic stroma comprises highly specialized cells with a high degree of anatomic, phenotypic, and functional heterogeneity. These properties are collectively required to bias thymocyte development toward production of self-tolerant and functionally competent T cells. The importance of thymic epithelial cells (TECs) is evidenced by clear links between their dysfunction and multiple diseases where autoimmunity and immunodeficiency are major components...
February 10, 2017: Annual Review of Immunology
https://www.readbyqxmd.com/read/28224996/intelectin-contributes-to-allergen-induced-il-25-il-33-and-tslp-expression-and-type-2-response-in-asthma-and-atopic-dermatitis
#5
L Yi, D Cheng, K Zhang, X Huo, Y Mo, H Shi, H Di, Y Zou, H Zhang, J Zhao, Y Xu, D J Erle, G Zhen
The epithelial and epidermal innate cytokines IL-25, IL-33, and thymic stromal lymphopoietin (TSLP) have pivotal roles in the initiation of allergic inflammation in asthma and atopic dermatitis (AD). However, the mechanism by which the expression of these innate cytokines is regulated remains unclear. Intelectin (ITLN) is expressed in airway epithelial cells and promotes allergic airway inflammation. We hypothesized that ITLN is required for allergen-induced IL-25, IL-33, and TSLP expression. In two asthma models, Itln knockdown reduced allergen-induced increases in Il-25, Il-33, and Tslp and development of type 2 response, eosinophilic inflammation, mucus overproduction, and airway hyperresponsiveness...
February 22, 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/28224652/cardio-stic-based-reference-ranges-of-fetal-thymus-size-in-singleton-pregnancies
#6
Sirida Pittyanont, Suchaya Luewan, Theera Tongsong
OBJECTIVES: To establish the reference ranges of the fetal thymus size among Thai fetuses. METHODS: The database of spatio-temporal image correlation (cardio-STIC) was assessed to obtain the volume data sets for offline analysis. The volume data sets acquired at 16 to 38 weeks were measured for the thymus transverse diameter (TD) and the thymus/thoracic (TT) ratio at the three-vessel view. The measured values were regressed to identify the best-fitted model. RESULTS: A total of 622 volumes were successfully measured and the reference ranges of TD and TT ratio were established...
February 22, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28224091/imaging-of-the-pediatric-thymus-clinicoradiologic-approach
#7
REVIEW
Smita Manchanda, Ashu S Bhalla, Manisha Jana, Arun K Gupta
The thymus is a lymphatic organ that undergoes dynamic changes with age and disease. It is important to be familiar with these physiological changes in the thymus gland to be able to identify pathology and make an accurate diagnosis. The thymus may be involved in multisystem disorders or show focal isolated lesions. The aim of this article is to review the radiological anatomy of the thymus, normal variants, and pathology including hyperplasia and benign/malignant lesions involving the thymus gland in the pediatric age group...
February 8, 2017: World Journal of Clinical Pediatrics
https://www.readbyqxmd.com/read/28223748/topical-application-of-eupatilin-ameliorates-atopic-dermatitis-like-skin-lesions-in-nc-nga-mice
#8
Ji Hyun Lee, Ye Jin Lee, Jun Young Lee, Young Min Park
BACKGROUND: Atopic dermatitis (AD) is an inflammatory skin disorder with severe pruritus. Despite advancements in medicine, therapeutic treatments for AD are still limited. Eupatilin (5,7-dihydroxy-30,40,6-trimethoxyflavone) is one of the lipophilic flavonoids from Artemisia umbelliformis Lam. and Artemisia genipi Weber. OBJECTIVE: Although it has been reported to act a role in improving inflammation, its action on AD is uncertain. In this study, we examined the role of eupatilin on AD-like skin lesions in NC/Nga mice...
February 2017: Annals of Dermatology
https://www.readbyqxmd.com/read/28222414/urinary-steroid-metabolites-in-a-case-of-florid-ectopic-cushing-s-syndrome-and-clinical-correlations
#9
Angelos Kyriacou, Karolina G Stepien, Basil Issa
A 51-year old woman was admitted with multiple cerebral, pulmonary and intra-abdominal abscesses. The combination of apparent immunosuppression, obesity, diabetes mellitus, hypertension, hypokalaemia, osteoporotic fractures and bilateral shoulder avascular necrosis led to a clinical diagnosis of Cushing's syndrome (CS). This was biochemically confirmed as follows: midnight serum cortisol 4275 nmol/L (60-250), non-suppressed overnight dexamethasone suppression test, raised salivary cortisol 716 nmol/L (5-46) and ACTH 639 ng/L (0-46)...
October 2016: Hormones: International Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28219709/cordycepin-diminishes-thymic-stromal-lymphopoietin-induced-interleukin-13-production
#10
Myoung-Schook Yoou, Kyoung Wan Yoon, Youngjin Choi, Hyung-Min Kim, Hyun-Ja Jeong
Atopic dermatitis (AD) is known to aggravate by thymic stromal lymphopoietin (TSLP) and TSLP is also known to up-regulate mast cell proliferation via production of interleukin (IL)-13. Thus, we investigated whether cordycepin could regulate mast cell proliferation induced by TSLP in human mast cell line, HMC-1 cell. Cordycepin significantly diminished the production and mRNA of IL-13 through the down-regulation of phosphorylated-signal transducer and activation of transcription 6 in the TSLP-stimulated HMC-1 cells...
February 17, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28219559/neovascularization-of-thymoma-from-left-internal-mammary-artery-bypass-graft
#11
Jordan Y Dubique, Harma Turbendian, Danny Chu
We present the case of a type AB thymoma in a 69-year-old man with previous coronary artery bypass grafting (CABG) in whom angiography revealed a left internal mammary artery graft supplying blood flow to a thymic neoplasm, which simultaneously occluded the graft. This required a redo sternotomy, lysis of pericardial adhesions, complete thymectomy, and redo one vessel off-pump CABG. This case seeks to sensitize physicians to the possibility of coronary adverse events in patients with a previous CABG in the setting of management of mediastinal neoplasms, and it presents the novel findings on cardiac imaging associated with this case...
March 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28216655/a-novel-thymoma-associated-autoimmune-disease-anti-pit-1-antibody-syndrome
#12
Hironori Bando, Genzo Iguchi, Yasuhiko Okimura, Yukiko Odake, Kenichi Yoshida, Ryusaku Matsumoto, Kentaro Suda, Hitoshi Nishizawa, Hidenori Fukuoka, Atsuko Mokubo, Katsuyoshi Tojo, Yoshimasa Maniwa, Wataru Ogawa, Yutaka Takahashi
Anti-PIT-1 antibody syndrome has recently been reported and characterized by acquired growth hormone (GH), prolactin (PRL), and thyroid-stimulating hormone (TSH) deficiencies associated with autoimmunity to a pituitary specific transcription factor PIT-1, which plays an essential role in GH-, PRL-, and TSH-producing cells. Although circulating anti-PIT-1 antibody and PIT-1-reactive cytotoxic T cells (CTLs) were detected in the patients, the pathophysiology and precise mechanisms for the autoimmunity remain unclarified...
February 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28214951/inhibition-of-jak-stat-pathway-restrains-tslp-activated-dendritic-cells-mediated-inflammatory-t-helper-type-2-cell-response-in-allergic-rhinitis
#13
Zhaohui Shi, Weihong Jiang, Min Wang, Xiaocheng Wang, Xiaoyuan Li, Xiaodong Chen, Li Qiao
Thymic stromal lymphopoietin (TSLP) has recently been implicated as a key molecule for initiating allergic rhinitis (AR) at the cell-dendritic cell (DC) interface. Previous studies demonstrated that TSLP activated DCs to express more OX40 ligand (OX40L), which is associated with the initiation of T helper type 2 (Th2) cell responses. STAT phosphorylation has been reported to be promoted by TSLP. Thus, we investigated if the JAK/STAT pathway inhibitor CYT387 could affect TSLP-DC-mediated Th2 cell response in naive T cell and AR mice model...
February 18, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28212996/analysis-of-a-panel-of-druggable-gene-mutations-and-of-alk-and-pd-l1-expression-in-a-series-of-thymic-epithelial-tumors-tets
#14
Marcello Tiseo, Angela Damato, Lucia Longo, Fausto Barbieri, Federica Bertolini, Alessandro Stefani, Mario Migaldi, Letizia Gnetti, Roberta Camisa, Paola Bordi, Sebastiano Buti, Giulio Rossi
INTRODUCTION: Thymic epithelial tumors (TETs) are rare neoplasms with different prognosis lacking consistent molecular alterations possibly leading to targeted therapy. We collected a consecutive series of TETs aimed at investigating the mutational status of druggable genes (EGFR, c-KIT, KRAS, BRAF, PDGFR-alpha and -beta, HER2 and c-MET) and the expression of ALK and PD-L1. PATIENTS AND METHODS: One hundred twelve consecutive cases of TETs and relative clinico-pathologic features were collected...
February 2017: Lung Cancer: Journal of the International Association for the Study of Lung Cancer
https://www.readbyqxmd.com/read/28212502/a-new-mechanism-shapes-the-na%C3%A3-ve-cd8-t-cell-repertoire-the-selection-for-full-diversity
#15
Pedro Gonçalves, Marco Ferrarini, Carmen Molina-Paris, Grant Lythe, Florence Vasseur, Annik Lim, Benedita Rocha, Orly Azogui
During thymic T cell differentiation, TCR repertoires are shaped by negative, positive and agonist selection. In the thymus and in the periphery, repertoires are also shaped by strong inter-clonal and intra-clonal competition to survive death by neglect. Understanding the impact of these events on the T cell repertoire requires direct evaluation of TCR expression in peripheral naïve T cells. Several studies have evaluated TCR diversity, with contradictory results. Some of these studies had intrinsic technical limitations since they used material obtained from T cell pools, preventing the direct evaluation of clone sizes...
February 14, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28203162/thymoma-metastasis-to-the-semimembranosus-muscle
#16
Kenta Taniguchi, Michiro Susa, Sho Ogata, Yuichi Ozeki, Kazuhiro Chiba
Thymoma is the most common thymic epithelial tumor whose classification was first introduced in 1999. Type B2 thymoma is considered a moderate/high-risk tumor; however, extrathoracic metastases are extremely rare with limited reports to date. In this report, we present a rare thymoma metastasis to the semimembranosus muscle, which was resected with a wide margin after confirmation by open biopsy. At the final follow-up after 1 year, no local recurrence has been observed.
January 2017: Case Reports in Oncology
https://www.readbyqxmd.com/read/28202617/the-bacterial-peptidoglycan-sensing-molecules-nod1-and-nod2-promote-cd8-thymocyte-selection
#17
Marianne M Martinic, Irina Caminschi, Meredith O'Keeffe, Therese C Thinnes, Raelene Grumont, Steve Gerondakis, Dianne B McKay, David Nemazee, Amanda L Gavin
Nucleotide-binding and oligomerization domain (NOD)-like receptors NOD1 and NOD2 are cytosolic innate immune receptors that recognize microbial peptidoglycans. Although studies have addressed the role of NOD proteins in innate immune responses, little attention has been given to their impact on the developing adaptive immune system. We have assessed the roles of NOD1 and NOD2 deficiency on T cell development in mice. Our results demonstrate that NOD1 and NOD2 promote the positive selection/maturation of CD8 single-positive thymocytes in a thymocyte-intrinsic manner...
February 15, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28202030/upregulation-of-interleukin-33-and-thymic-stromal-lymphopoietin-levels-in-the-lungs-of-idiopathic-pulmonary-fibrosis
#18
Jong-Uk Lee, Hun Soo Chang, Hyeon Ju Lee, Chang An Jung, Da Jeong Bae, Hyun Ji Song, Jong Sook Park, Soo-Taek Uh, Young Hoon Kim, Ki-Hyun Seo, Choon-Sik Park
BACKGROUND: Innate T helper type 2 (Th2) immune responses mediated by interleukin (IL)-33, thymic stromal lymphopoietin (TSLP), and IL-25 have been shown to play an important role in pulmonary fibrosis of animal models; however, their clinical implications remain poorly understood. METHODS: TSLP, IL-25, and IL-33 concentrations were measured in bronchoalveolar lavage fluids obtained from normal controls (NCs; n = 40) and from patients with idiopathic pulmonary fibrosis (IPF; n = 100), non-specific interstitial pneumonia (NSIP; n = 22), hypersensitivity pneumonitis (HP; n = 20), and sarcoidosis (n = 19)...
February 15, 2017: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/28199345/impact-of-chronic-rhinosinusitis-on-severe-asthma-patients
#19
Ta-Jen Lee, Chia-Hsiang Fu, Chun-Hua Wang, Chi-Che Huang, Chien-Chia Huang, Po-Hung Chang, Yi-Wei Chen, Chia-Chen Wu, Ching-Lung Wu, Han-Pin Kuo
Coexistence of chronic rhinosinusitis (CRS) with asthma appears to impair asthma control. Type-2 innate lymphoid cells (ILC2s) respond to the cytokines of thymic stromal lymphopoietin (TSLP), interleukin (IL)-25 and IL-33, thus contributing to airway diseases such as CRS and asthma. We investigate whether the augmented Th2-cytokines in CRS might be related to sinonasal tract ILC2s corresponding to enhanced IL-25, IL-33 and TSLP release in severe asthmatics, and be involved in asthma control. Twenty-eight asthmatics (12 non-severe and 16 severe) with CRS receiving nasal surgery were enrolled...
2017: PloS One
https://www.readbyqxmd.com/read/28198542/ceramide-synthase-2-facilitates-s1p-dependent-egress-of-thymocytes-into-the-circulation-in-mice
#20
Michael Rieck, Christiane Kremser, Katarzyna Jobin, Elisabeth Mettke, Christian Kurts, Markus Gräler, Klaus Willecke, Waldemar Kolanus
Well-defined gradients of the lipid mediator sphingosine-1-phosphate (S1P) direct chemotactic egress of mature thymocytes from the thymus into the circulation. Although it is known that these gradients result from low S1P levels in the thymic parenchyma and high S1P concentrations at the exit sites and in the plasma, the biochemical mechanisms that regulate these differential S1P levels remain unclear. Several studies demonstrated that ceramide synthase 2 (Cers2) regulates the levels of the S1P precursor sphingosine...
February 15, 2017: European Journal of Immunology
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