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https://www.readbyqxmd.com/read/28524828/relationships-of-inflammatory-factors-and-risk-factors-with-different-target-organ-damage-in-essential-hypertension-patients
#1
Chun-Lin Lai, Jin-Ping Xing, Xiao-Hong Liu, Jie Qi, Jian-Qiang Zhao, You-Rui Ji, Wu-Xiao Yang, Pu-Juan Yan, Chun-Yan Luo, Lu-Fang Ruan
BACKGROUND: Atherosclerosis (AS) is an inflammatory disease. Inflammation was considered to play a role in the whole process of AS. This study aimed to analyze the relationships of inflammatory factors and risk factors with different target organ damages (TOD) in essential hypertension (EH) patients and to explore its clinical significance. METHODS: A total of 294 EH patients were selected and divided into four groups according to their conditions of TOD. Forty-eight healthy subjects were selected as control...
June 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28514613/kit-inhibition-by-imatinib-in-patients-with-severe-refractory-asthma
#2
RANDOMIZED CONTROLLED TRIAL
Katherine N Cahill, Howard R Katz, Jing Cui, Juying Lai, Shamsah Kazani, Allison Crosby-Thompson, Denise Garofalo, Mario Castro, Nizar Jarjour, Emily DiMango, Serpil Erzurum, Jennifer L Trevor, Kartik Shenoy, Vernon M Chinchilli, Michael E Wechsler, Tanya M Laidlaw, Joshua A Boyce, Elliot Israel
BACKGROUND: Mast cells are present in the airways of patients who have severe asthma despite glucocorticoid treatment; these cells are associated with disease characteristics including poor quality of life and inadequate asthma control. Stem cell factor and its receptor, KIT, are central to mast-cell homeostasis. We conducted a proof-of-principle trial to evaluate the effect of imatinib, a KIT inhibitor, on airway hyperresponsiveness, a physiological marker of severe asthma, as well as on airway mast-cell numbers and activation in patients with severe asthma...
May 18, 2017: New England Journal of Medicine
https://www.readbyqxmd.com/read/28503577/the-role-of-proteinase-activated-receptors-1-and-2-in-the-regulation-of-periodontal-tissue-metabolism-and-disease
#3
REVIEW
E S Rovai, M Holzhausen
Proteinase-activated receptors 1 (PAR1) and 2 (PAR2) are the most highly expressed members of the PAR family in the periodontium. These receptors regulate periodontal inflammatory and repair processes through their activation by endogenous and bacterial enzymes. PAR1 is expressed by the periodontal cells such as human gingival fibroblasts, gingival epithelial cells, periodontal ligament cells, osteoblasts, and monocytic cells and can be activated by thrombin, matrix metalloproteinase 1 (MMP-1), MMP-13, fibrin, and gingipains from Porphyromonas gingivalis...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/28503494/intratumoral-and-peritumoral-mast-cells-in-malignant-melanoma-an-immunohistochemical-study
#4
Parvin Rajabi, Azam Bagheri, Mohssen Hani
BACKGROUND: The aim of the current study was to determine mast cell infiltration in malignant melanoma by immunohistochemistry method and its relationship with some of the cancer prognostic factors, including age, sex, and depth of the tumor. MATERIALS AND METHODS: In this retrospective analytic cross-sectional study, paraffin-embedded tissue blocks of patients with cutaneous malignant melanoma who had undergone excisional biopsy were studied. Mast cells count in studied cases in different stages of the tumor depth was evaluated by mast cell tryptase immunohistochemistry method...
2017: Advanced Biomedical Research
https://www.readbyqxmd.com/read/28501827/a-confirmed-case-of-sugammadex-induced-anaphylaxis-in-a-uk-hospital
#5
Robert O'Donnell, Jack Hammond, Sam Soltanifar
We report the first published case of confirmed anaphylaxis to sugammadex in a UK hospital. The patient was given a bolus of sugammadex at the end of surgery. Four minutes later, he developed hypotension and a widespread erythematous rash. Multiple epinephrine boluses were administered and a continuous intravenous infusion of epinephrine commenced. The patient later reported auditory awareness, which occurred while the diagnosis of anaphylaxis was being made and initial treatment initiated. Serial serum tryptase levels were consistent with a type I hypersensitivity reaction...
May 13, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28500685/analysis-of-serum-markers-of-cellular-immune-activation-in-patients-with-bullous-pemphigoid
#6
Katja Bieber, Anna Lara Ernst, Stefan Tukaj, Maike M Holtsche, Enno Schmidt, Detlef Zillikens, Ralf J Ludwig, Michael Kasperkiewicz
Experimental models of bullous pemphigoid (BP), the most frequent subepidermal autoimmune bullous disease, revealed that the immune response leading to blister formation represents an incompletely understood complex process involving different inflammatory cells. In contrast to previous reports commonly focusing on limited molecular and cellular phenotypes of the disease, the aim of this study was to investigate a broad spectrum of markers of cellular immune activation in patients with BP. We found that serum levels of soluble CD4, myeloperoxidase, S100A12, eosinophil cationic protein, and soluble P-selectin were significantly elevated in patients with active BP compared with normal controls...
May 13, 2017: Experimental Dermatology
https://www.readbyqxmd.com/read/28492714/mast-cells-distinguish-eosinophilic-esophagitis-in-pediatric-patients
#7
Elizete Aparecida Lomazi, Nelson Ary Brandalise, Maria de Fátima Pimenta Correa Servidoni, Silvia Regina Cardoso, Luciana Rodrigues Meirelles
BACKGROUND: Mast cells exert a substantial role in gastrointestinal allergic diseases. Therefore, it is reasonable to presume that mast cell may aid diagnosis in eosinophilic gastroenteropathy. OBJECTIVE: To evaluate whether mast cell count in the esophageal epithelium can discriminate eosinophilic esophagitis, proton-pump inhibitor (PPI)-responsive eosinophilic esophagitis and gastroesophageal reflux esophagitis. METHODS: Retrospectively we reviewed the files of 53 consecutive patients (age: 7...
May 8, 2017: Arquivos de Gastroenterologia
https://www.readbyqxmd.com/read/28492555/acidic-ph-is-essential-for-maintaining-mast-cell-secretory-granule-homeostasis
#8
Gunnar Pejler, Jun Mei Hu Frisk, Daniel Sjöström, Aida Paivandy, Helena Öhrvik
It has been recognized for a long time that the secretory granules of mast cells are acidic, but the functional importance of maintaining an acidic pH in the mast cell granules is not fully understood. Here we addressed this issue by examining the effects of raising the pH of the mast cell secretory granules. Mast cells were incubated with bafilomycin A1, an inhibitor of the vacuolar-type ATPase proton pump. Supporting a role of vacuolar-type ATPase in mast cell granule acidification, bafilomycin A1 treatment caused a robust increase in granule pH...
May 11, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28491140/tryptase-mast-cell-density-protease-activated-receptor-2-microvascular-density-and-classical-microvascular-density-evaluation-in-gastric-cancer-patients-undergoing-surgery-possible-translational-relevance
#9
Michele Ammendola, Rosario Sacco, Giuseppina Vescio, Valeria Zuccalà, Maria Luposella, Rosa Patruno, Nicola Zizzo, Claudia Gadaleta, Ilaria Marech, Roberta Ruggieri, Ibrahim Furkan Kocak, Taner Ozgurtas, Cosmo Damiano Gadaleta, Giuseppe Sammarco, Girolamo Ranieri
BACKGROUND: Mast cells (MCs) can stimulate angiogenesis, releasing several proangiogenic cytokines stored in their cytoplasm. In particular, MCs can release tryptase, a potent in vivo and in vitro proangiogenic factor via protease-activated receptor-2 (PAR-2) activation and mitogen-activated protein kinase (MAPK) phosphorylation. Nevertheless, no data are available concerning the relationship among tryptase MC density (TMCD), endothelial cells (ECs) positive to PAR-2 microvascular density (PAR-2-MVD) and classical MVD (C-MVD) in gastric cancer (GC) angiogenesis...
April 2017: Therapeutic Advances in Gastroenterology
https://www.readbyqxmd.com/read/28486845/routine-abdominal-ultrasonography-has-limited-value-in-the-care-for-patients-with-indolent-systemic-mastocytosis
#10
C L de Mol, M A W Hermans, R Gerth van Wijk, P M van Hagen, P L A van Daele
OBJECTIVES: Systemic mastocytosis (SM) is a myeloproliferative disease characterized by the accumulation of aberrant mast cells. Since advanced subtypes of SM can lead to organ dysfunction and shortened survival, timely recognition of progressive disease is important for the adequate treatment of SM patients. METHODS: Here, we report the results of our cohort study on the value of routine abdominal ultrasonography for the detection of progression of indolent systemic mastocytosis (ISM)...
May 10, 2017: Hematology (Amsterdam, Netherlands)
https://www.readbyqxmd.com/read/28485540/proteinase-activated-receptor-2-modulates-ve-cadherin-expression-to-affect-human-vascular-endothelial-barrier-function
#11
Rui Zhang, Jianjun Ge
Published data indicate that the protease-activated receptor (PAR) 2 is involved in the pathogenesis of some cardiovascular diseases; the underlying mechanism is to be further investigated. Ve-cadherin is a critical molecule in maintaining the endothelial barrier integrity. This study aims to investigate the role of PAR2 activation in compromising the cardiac endothelial barrier function. In this study, human umbilical vein endothelial cells (Huvec cells) were cultured into monolayers using as an in vitro model of barrier function...
May 9, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28483325/tryptase-increase-without-mastocytosis-or-anaphylaxis
#12
EDITORIAL
Dennis K Ledford, Cem Akin
No abstract text is available yet for this article.
May 2017: Journal of Allergy and Clinical Immunology in Practice
https://www.readbyqxmd.com/read/28483312/current-knowledge-and-management-of-hypersensitivity-to-perioperative-drugs-and-radiocontrast-media
#13
Karen S Hsu Blatman, David L Hepner
Perioperative anaphylaxis is an iatrogenic clinical condition, most often after anesthetic induction. Several mechanisms are implicated, including IgE- and non-IgE-mediated mechanisms. Perioperative anaphylaxis tends to be severe and has a higher mortality rate than anaphylaxis in other settings. This is partly due to factors that impair early recognition of anaphylaxis. Neuromuscular blocking agents, latex containing products, and antibiotics are the most common etiology. Chlorhexidine and dyes are increasingly culprits...
May 2017: Journal of Allergy and Clinical Immunology in Practice
https://www.readbyqxmd.com/read/28440714/hypereosinophilic-syndrome-endomyocardial-biopsy-versus-echocardiography-to-diagnose-cardiac-involvement
#14
Joseph H Butterfield, Garvan C Kane, Catherine R Weiler
OBJECTIVE: To compare echocardiograms and endomyocardial biopsies to diagnose cardiac involvement in hypereosinophilic syndrome. METHODS: We examined the agreement between echocardiography and endomyocardial biopsies to detect cardiac involvement in hypereosinophilic syndrome by reviewing cases identified as hypereosinophilia or hypereosinophilic syndrome in Mayo Clinic databases from January 1978 through June 2009. Single-organ cases of eosinophilia such as eosinophilic fasciitis and eosinophilic gastroenteritis were excluded...
April 25, 2017: Postgraduate Medicine
https://www.readbyqxmd.com/read/28439288/systemic-mastocytosis-with-kit-v560g-mutation-presenting-as-recurrent-episodes-of-vascular-collapse-response-to-disodium-cromoglycate-and-disease-outcome
#15
Iolanda Conde-Fernandes, Rita Sampaio, Filipa Moreno, José Palla-Garcia, Maria Dos Anjos Teixeira, Inês Freitas, Esmeralda Neves, Maria Jara-Acevedo, Luis Escribano, Margarida Lima
BACKGROUND: Mastocytosis are rare diseases characterized by an accumulation of clonal mast cells (MCs) in one or multiple organs or tissues. Patients with systemic mastocytosis (SM), whose MCs frequently arbor the activating D816V KIT mutation, may have indolent to aggressive diseases, and they may experience MC mediator related symptoms. Indolent SM with recurrent anaphylaxis or vascular collapse in the absence of skin lesions, ISMs(-), is a specific subtype indolent SM (ISM), and this clonal MC activation disorder represents a significant fraction of all MC activation syndromes...
2017: Allergy, Asthma, and Clinical Immunology
https://www.readbyqxmd.com/read/28438101/intravenous-administration-of-cannabis-and-lethal-anaphylaxis
#16
John D Gilbert, Marc Grabowski, Roger W Byard
Cannabis allergy appears to be increasing. A 33-year-old woman is reported who collapsed and died shortly after injecting herself with a cannabis solution prepared by pouring boiling water onto plant material. There were no significant findings at autopsy, except for a single recent venepuncture wound in the left cubital fossa. Toxicological examination of the blood revealed low levels of methylamphetamine and amphetamine with tetrahydrocannabinol (Δ(9)-THC) and 11-nor-9-carboxy-Δ(9)-THC, and no opiates. The syringe used by the decedent contained Δ(9)-THC...
April 2017: Medicine, Science, and the Law
https://www.readbyqxmd.com/read/28432683/prospective-evaluation-of-the-diagnostic-value-of-sensitive-kit-d816v-mutation-analysis-of-blood-in-adults-with-suspected-systemic-mastocytosis
#17
Thomas Kristensen, Hanne Vestergaard, Carsten Bindslev-Jensen, Charlotte Gotthard Mortz, Henrik Fomsgaard Kjaer, Markus Ollert, Michael Boe Møller, Sigurd Broesby-Olsen
BACKGROUND: Sensitive KIT D816V mutation analysis of blood has been proposed to guide bone marrow (BM) investigation in suspected systemic mastocytosis (SM). The aim of this prospective study was for the first time to compare the D816V-status of the "screening blood sample" used to guide BM biopsy in suspected SM to the outcome of the subsequent BM investigation. METHODS: 58 adult patients with suspected SM were included. The outcome of sensitive KIT D816V-analysis of blood was compared to the result of the BM investigation...
April 22, 2017: Allergy
https://www.readbyqxmd.com/read/28425830/tryptase-inhibitors-a-patent-review
#18
Wei-Wei Ni, Meng-Da Cao, Wen Huang, Ling Meng, Ji-Fu Wei
Tryptase is one of the main serine-proteinases located in the secretory granules of mast cells, and is released through degranulation, which is involved in the pathogenesis of allergic inflammatory disease, cardiovascular diseases, lung fibrosis and tumor. Therefore, inhibitors targeting tryptase may represent a new direction for the treatment of allergic inflammatory disease and other diseases. Areas covered: In this article, we discussed the history and development of tryptase inhibitors and described a variety of tryptase inhibitors via their structures and biological importance in clinical studies and drug development for tryptase-related diseases...
April 20, 2017: Expert Opinion on Therapeutic Patents
https://www.readbyqxmd.com/read/28424161/response-and-progression-on-midostaurin-in-advanced-systemic-mastocytosis-kit-d816v-and-other-molecular-markers
#19
Mohamad Jawhar, Juliana Schwaab, Nicole Naumann, Hans-Peter Horny, Karl Sotlar, Torsten Haferlach, Georgia Metzgeroth, Alice Fabarius, Peter Valent, Wolf-Karsten Hofmann, Nicholas C P Cross, Manja Meggendorfer, Andreas Reiter
In advanced systemic mastocytosis (advSM), disease evolution is often triggered by activating KIT mutations (D816V in >80% of cases) and by additional mutations, e.g. in SRSF2, ASXL1 and/or RUNX1 (S/A/R(pos), >60% of cases). In a recently reported phase-II-study, midostaurin, a multikinase/KIT inhibitor, demonstrated an overall response rate (ORR) of 60% in advSM but biomarkers predictive of response are lacking. We evaluated the impact of molecular markers (KIT D816V, S/A/R(pos)) at baseline and during follow-up in 38 midostaurin-treated advSM patients...
April 19, 2017: Blood
https://www.readbyqxmd.com/read/28386371/immunomodulatory-activity-of-interleukin-27-in-human-chronic-periapical-diseases
#20
Juan Li, Rong Wang, Shi-Guang Huang
This study aims to observe expression of IL-27 on different cells in periapical tissues of different types of human chronic periapical diseases. Periapical tissue specimens of 60 donors, including healthy control (n=20), periapical granuloma group (n=20) and radicular cysts group (n=20), were fixed in 10% buffered formalin, stained with hematoxylin and eosin for histopathology. Then specimens were stained with double- immuno-fluorescence assay for identification of IL-27-tryptase (mast cells, MCs), IL-27-CD14 (mononuclear phagocyte cells, MPs) and IL-27-CD31 (endothelial cells, ECs) double-positive cells in periapical tissues...
2017: American Journal of Translational Research
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