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https://www.readbyqxmd.com/read/27931275/serum-tryptase-level-and-inflammatory-markers-in-exhaled-breath-condensate-of-children-with-exercise-induced-symptoms
#1
Iwona Stelmach, Magdalena Zaczeniuk, Anna Sztafiska, Pawe Majak, Joanna Jerzyska, Anna Kuklinska-Pijanka, Wlodzimierz Stelmach
BACKGROUND: The pathogenesis of exercise-induced bronchoconstriction (EIB) is poorly understood. OBJECTIVE: To evaluate the biomarkers concentration in exhaled breath condensate (EBC) in schoolchildren with postexercise symptoms. We also evaluated changes in fractional exhaled nitric oxide (FeNO) value and the serum tryptase level after exercise. METHODS: One hundred children with postexercise symptoms were included. Methacholine challenge testing (MCT) was performed at visit 2, and exercise challenge testing (ECT) was performed at visit 3...
September 2016: Allergy and Asthma Proceedings:
https://www.readbyqxmd.com/read/27922077/mast-cell-phenotype-tnf%C3%AE-expression-and-degranulation-status-in-non-small-cell-lung-cancer
#2
A Shikotra, C M Ohri, R H Green, D A Waller, P Bradding
Mast cell infiltration of tumour islets represents a survival advantage in non-small cell lung cancer (NSCLC). The phenotype and activation status of these mast cells is unknown. We investigated the mast cell phenotype in terms of protease content (tryptase-only [MCT], tryptase + chymase [MCTC]) and tumour necrosis factor-alpha (TNFα) expression, and extent of degranulation, in NSCLC tumour stroma and islets. Surgically resected tumours from 24 patients with extended survival (ES; mean survival 86.5 months) were compared with 25 patients with poor survival (PS; mean survival 8...
December 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27918452/light-dark-shifting-promotes-alcohol-induced-colon-carcinogenesis-possible-role-of-intestinal-inflammatory-milieu-and-microbiota
#3
Faraz Bishehsari, Abdulrahman Saadalla, Khashayarsha Khazaie, Phillip A Engen, Robin M Voigt, Brandon B Shetuni, Christopher Forsyth, Maliha Shaikh, Martha Hotz Vitaterna, Fred Turek, Ali Keshavarzian
BACKGROUND: Colorectal cancer (CRC) is associated with the modern lifestyle. Chronic alcohol consumption-a frequent habit of majority of modern societies-increases the risk of CRC. Our group showed that chronic alcohol consumption increases polyposis in a mouse mode of CRC. Here we assess the effect of circadian disruption-another modern life style habit-in promoting alcohol-associated CRC. METHOD: TS4Cre × adenomatous polyposis coli (APC)(lox468) mice underwent (a) an alcohol-containing diet while maintained on a normal 12 h light:12 h dark cycle; or (b) an alcohol-containing diet in conjunction with circadian disruption by once-weekly 12 h phase reversals of the light:dark (LD) cycle...
December 2, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27916091/-tryptase-inhibits-cell-apoptosis-through-upregulating-par-2-and-rho-kinase-in-rheumatoid-arthritis-synovial-fibroblasts
#4
Qianqian Zheng, Shigang Li, Yunli Jia, Wei Liu, Lingling Yu, Xianyong Chen, Jinling Wang
Objective To investigate the regulatory effects of tryptase on protease-activated receptors 2 (PAR-2), Rho signal pathway and apoptosis of MH7A rheumatoid arthritis synovial fibroblasts. Methods In MH7A cells, the expression of PAR-2 was measured by flow cytometry; cell apoptosis was examined by annexin V- FITC/PI staining combined with flow cytometry; the expression of Rho kinase was detected by Pull-down assay and Western botting. Results Tryptase upregulated the expression of PAR-2 in MH7A cells, and suppressed Fas-mediated apoptosis of MH7A cells in a dose-dependent manner...
December 2016: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/27906487/neutrophil-activation-during-acute-human-anaphylaxis-analysis-of-mpo-and-scd62l
#5
Abbie Francis, Erika Bosio, Shelley F Stone, Daniel M Fatovich, Glenn Arendts, Yusuf Nagree, Stephen P J Macdonald, Hugh Mitenko, Mani Rajee, Sally Burrows, Simon G A Brown
BACKGROUND: The mechanisms involved in the amplification of the mast cell response during anaphylaxis are unclear. Mouse models of anaphylaxis demonstrate the critical involvement of neutrophils. These innate immune cells are highly abundant in peripheral blood and can be rapidly activated to trigger both local and systemic inflammation. OBJECTIVE: To investigate neutrophil activation in peripheral blood during acute human anaphylaxis. METHODS: Patients presenting to the Emergency Department with anaphylaxis underwent blood sampling upon enrolment and at up to three subsequent time points...
December 1, 2016: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/27896514/tumor-infiltrating-mast-cells-tims-confers-a-marked-survival-advantage-in-nonmetastatic-clear-cell-renal-cell-carcinoma
#6
Hangcheng Fu, Yu Zhu, Yiwei Wang, Zheng Liu, Junyu Zhang, Zewei Wang, Huyang Xie, Bo Dai, Jiejie Xu, Dingwei Ye
PURPOSE: The role played by the innate immune system in determining the clinical outcome of clear-cell renal cell carcinoma (ccRCC) was still blurred. This study was designed to investigate the prognostic significance of tumor infiltrating mast cells (TIMs) in ccRCC. METHODS: The study retrospectively enrolled a training set (474 patients) and a validation set (188 patients) with nonmetastasis (pT1-4N0M0) ccRCC from two institutional medical centers of China. TIMs was evaluated by immunohistochemical staining of tryptase and its association with clinicopathologic features and prognosis were evaluated...
November 28, 2016: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/27895892/sexual-dimorphism-in-the-mast-cell-transcriptome-and-the-pathophysiological-responses-to-immunological-and-psychological-stress
#7
Emily Mackey, Saravanan Ayyadurai, Calvin S Pohl, Susan D' Costa, Yihang Li, Adam J Moeser
BACKGROUND: Biological sex plays a prominent role in the prevalence and severity of a number of important stress-related gastrointestinal and immune-related diseases including IBS and allergy/anaphylaxis. Despite the establishment of sex differences in these diseases, the underlying mechanisms contributing to sex differences remain poorly understood. The objective of this study was to define the role of biological sex on mast cells (MCs), an innate immune cell central to the pathophysiology of many GI and allergic disorders...
2016: Biology of Sex Differences
https://www.readbyqxmd.com/read/27893746/mast-cells-are-abundant-in-primary-cutaneous-t-cell-lymphomas-results-from-a-computer-aided-quantitative-immunohistological-study
#8
Johanna Eder, Radu Rogojanu, Waltraud Jerney, Friedrich Erhart, Alexander Dohnal, Melitta Kitzwögerer, Georg Steiner, Julia Moser, Franz Trautinger
BACKGROUND: Mast cells (MC) are bone marrow derived haematopoetic cells playing a crucial role not only in immune response but also in the tumor microenvironment with protumorigenic and antitumorigenic functions. The role of MC in primary cutaneous T-cell lymphomas (CTCL), a heterogeneous group of non-Hodgkin lymphomas with initial presentation in the skin, is largely unknown. OBJECTIVE: To gain more accurate information about presence, number, distribution and state of activation (degranulated vs...
2016: PloS One
https://www.readbyqxmd.com/read/27889928/elucidating-the-role-of-cyclooxygenase-2-in-the-pathogenesis-of-oral-lichen-planus-an-immunohistochemical-study-with-supportive-histochemical-analysis
#9
Pratyush Singh, Jasleen Grover, Aditi Amit Byatnal, Vasudeva Guddattu, Raghu Radhakrishnan, Monica Charlotte Solomon
OBJECTIVE: Oral lichen planus (OLP) is a chronic, inflammatory disorder that affects the oral mucous membrane. During an inflammatory response, several chemokines and cytokines are released by the cells of the immune system. Activation of MMPs, along with mast cell-derived chymase and tryptase, degrades the basement membrane structural proteins, resulting in basement membrane breaks. AIM: To investigate the association between the COX-2 expressions, presence of intact or degranulating mast cells within the connective tissue and the extent of basement membrane discontinuity in OLP cases...
November 7, 2016: Journal of Oral Pathology & Medicine
https://www.readbyqxmd.com/read/27889920/neuropeptide-y-receptor-1-is-expressed-by-b-and-t-lymphocytes-and-mast-cells-in-infantile-haemangiomas
#10
Elysia M S Tan, Max G Blackwell, Jonathan C Dunne, Reginald Marsh, Swee T Tan, Tinte Itinteang
AIM: We investigated the expression of neuropeptide Y (NPY), NPY receptor 1 (NPYR1) and NPY receptor 2 (NPYR2) in infantile haemangiomas (IHs). METHODS: Immunohistochemical (IHC) staining was performed on proliferating IHs from six patients aged 4-13 (mean 8.7) months and involuted IHs from six patients aged 5-59 (mean 18.7) years, for the expression of NPY, NPYR1 and NPYR2. Protein and messenger ribonucleic acid expression corresponding to these proteins was investigated by Western blotting and NanoString analysis, respectively...
November 27, 2016: Acta Paediatrica
https://www.readbyqxmd.com/read/27888720/postmortem-serum-levels-of-ige-and-mast-cell-tryptase-in-fatal-asthma
#11
Maria Pia Scarpelli, Sanjiv Keller, Lara Tran, Cristian Palmiere
The aim of this study was to characterize the concentrations of total and specific IgE as well as mast cell-derived tryptase in postmortem serum from femoral blood and evaluate the usefulness of their determination for diagnostic purposes in cases of fatal asthma attacks. 36 autopsy cases were retrospectively selected including cases of witnessed death in asthmatic subjects, deaths in asthmatics and atopic subjects with causes of death unrelated to asthma or allergic anaphylaxis as well as deaths in non-atopic, non-allergic individuals with causes of death unrelated to asthma or allergic anaphylaxis...
December 2016: Forensic Science International
https://www.readbyqxmd.com/read/27886904/mastocytosis-and-anaphylaxis
#12
REVIEW
Anna Schuch, Knut Brockow
This article updates current knowledge on epidemiology, risk factors, triggers, and management of anaphylaxis in patients with mastocytosis. Hyperactive mast cells and higher number of effector mast cells are speculated to facilitate anaphylaxis in this condition. In children, increased risk is limited to those with extensive skin involvement and high tryptase. In adults, manifestations of anaphylaxis are severe with high frequency of cardiovascular symptoms. Hymenoptera stings are the most common triggers for these reactions; however, idiopathic anaphylaxis and reactions to food or drugs occur...
February 2017: Immunology and Allergy Clinics of North America
https://www.readbyqxmd.com/read/27872771/tranexamic-acid-an-exceedingly-rare-cause-of-anaphylaxis-during-anaesthesia
#13
R A Bansal, A Nicholas, A S Bansal
Tranexamic acid (TXA) allergy is extremely rare. An 80-year-old woman without prior exposure to TXA underwent elective knee replacement. Shortly after induction of anaesthesia and intravenous TXA, she developed hypotension, tachycardia, and facial erythema accompanied by a raised serum tryptase. Later, skin prick and intradermal testing confirmed positive responses to TXA in high dilution and with negative results to the other drugs used. While neuromuscular blocking agents, opiates, and antibiotics remain the most frequent cause of anaphylaxis during anaesthesia, allergy to TXA should always be borne in mind and requires skin testing for confirmation as there are presently no blood tests available...
2016: Case Reports in Immunology
https://www.readbyqxmd.com/read/27871567/intraoperative-medications-associated-with-hemodynamically-significant-anaphylaxis
#14
Robert E Freundlich, Neal M Duggal, Michelle Housey, Tyler T Tremper, Milo C Engoren, Sachin Kheterpal
STUDY OBJECTIVE: To facilitate the identification of drugs and patient factors associated with hemodynamically significant anaphylaxis. DESIGN: Using an existing database containing complete perioperative records, instances of hemodynamically significant anaphylaxis were identified using a physiologic and treatment-based screening algorithm. All cases were manually reviewed by 2 clinicians, with a third adjudicating disagreements, and confirmed cases were matched 3:1 with control cases...
December 2016: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/27868214/low-intratumoral-mast-cells-are-associated-with-a-higher-risk-of-prostate-cancer-recurrence
#15
Heidi A Hempel, Nathan S Cuka, Ibrahim Kulac, John R Barber, Toby C Cornish, Elizabeth A Platz, Angelo M De Marzo, Karen S Sfanos
BACKGROUND: Mast cells are of interest in prostate cancer because they possess both pro- and anti-tumorigenic properties and are present in the tumor microenvironment. We studied the association of mast cell count and densities with prostate cancer recurrence using tissue microarrays (TMAs) for 462 men who recurred (cases) and 462 controls that were matched to the cases nested in a cohort of radical prostatectomy patients. METHODS: Dual-immunostaining for mast cell tryptase and epithelial cytokeratin-8 and whole slide image analysis were used to assess total mast cell number, mast cell density (mast cell number/tissue area), and mast cell number per epithelial or stromal area in TMA spots containing tumor (up to 4 per man)...
November 21, 2016: Prostate
https://www.readbyqxmd.com/read/27862161/%C3%AE-eudesmol-suppresses-allergic-reactions-via-inhibiting-mast-cell-degranulation
#16
Na-Ra Han, Phil-Dong Moon, Ka-Jung Ryu, Jae-Bum Jang, Hyung-Min Kim, Hyun-Ja Jeong
The regulatory effect of β-eudesmol, which is an active constituent of Pyeongwee-San (KMP6), is evaluated for allergic reactions induced by mast cell degranulation. Phorbol 12-myristate 13-acetate (PMA) plus calcium ionophore A23187-stimulated human mast cell line, HMC-1 cells, and compound 48/80-stimulated rat peritoneal mast cells (RPMCs) are used as the in vitro models; mice models of systemic anaphylaxis, ear swelling, and IgE-dependent passive cutaneous anaphylaxis (PCA) are used as the in vivo allergic models...
November 14, 2016: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/27854307/mast-cells-density-positive-to-tryptase-correlate-with-microvascular-density-in-both-primary-gastric-cancer-tissue-and-loco-regional-lymph-node-metastases-from-patients-that-have-undergone-radical-surgery
#17
Michele Ammendola, Rosario Sacco, Valeria Zuccalà, Maria Luposella, Rosa Patruno, Pietro Gadaleta, Nicola Zizzo, Cosmo Damiano Gadaleta, Giovambattista De Sarro, Giuseppe Sammarco, Mihai Oltean, Girolamo Ranieri
Mast Cells (MCs) play a role in immune responses and more recently MCs have been involved in tumoral angiogenesis. In particular MCs can release tryptase, a potent in vivo and in vitro pro-angiogenic factor via proteinase-activated receptor-2 (PAR-2) activation and mitogen-activated protein kinase (MAPK) phosphorylation. MCs can release tryptase following c-Kit receptor activation. Nevertheless, no data are available concerning the relationship among MCs Density Positive to Tryptase (MCDPT) and Microvascular Density (MVD) in both primary gastric cancer tissue and loco-regional lymph node metastases...
November 15, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27853881/a-suspected-case-of-rocuronium-sugammadex-complex-induced-anaphylactic-shock-after-cesarean-section
#18
Masakazu Yamaoka, Miki Deguchi, Kiichiro Ninomiya, Toshiaki Kurasako, Mutsuko Matsumoto
An anaphylactic reaction during a cesarean section occurs rarely, and rocuronium is thought to be one of the common agents causing perioperative anaphylaxis. Here we report an anaphylactic shock after cesarean section that is suggested to be induced by the rocuronium-sugammadex complex. A 36-year-old primigravida underwent an elective cesarean section under general anesthesia due to placenta previa. While the operation was completed uneventfully, she developed anaphylactic shock following sugammadex administration...
November 16, 2016: Journal of Anesthesia
https://www.readbyqxmd.com/read/27847826/mast-cells-key-players-in-the-shadow-in-oral-inflammation-and-in-squamous-cell-carcinoma-of-the-oral-cavity
#19
REVIEW
Pusa Nela Gaje, Raluca Amalia Ceausu, Adriana Jitariu, Stefan Ioan Stratul, Laura-Cristina Rusu, Ramona Amina Popovici, Marius Raica
Although mast cells (MCs) have been discovered over 130 years ago, their function was almost exclusively linked to allergic affections. At the time being, it is well known that MCs possess a great variety of roles, in both physiologic and pathologic conditions. In the oral tissues, MCs release different proinflammatory cytokines, tumor necrosis factor alpha (TNF-α), that promote leukocyte infiltration in various inflammatory states of the oral cavity. These cells play a key role in the inflammatory process and, as a consequence, their number changes in different pathologic conditions of the oral cavity, like gingivitis, periodontitis, and so on...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27828630/histochemical-and-immunohistochemical-differences-between-solitary-oral-fibroma-and-fibrous-papule-of-the-face
#20
Águida Cristina Gomes Henriques, Roseana de Almeida Freitas, Bruno Cunha Pires, Clarissa Araújo Gurgel, Jean Nunes Dos Santos
Background: The morphological similarities between fibrous papules of the face and multiple sporadic oral fibromas were mentioned long ago and a relationship between them has been reported in the literature. Objective: The aim of this study was to evaluate the participation of mast cells, elastin and collagen in a series of oral fibromas and fibrous papules of the face in order to better understand the possible role of these factors in fibrosis and the formation of these lesions...
September 2016: Anais Brasileiros de Dermatologia
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