Results 21 to 30 of about 5,434,736 (260)

Covid-19 hyperinflammation and post-Covid-19 illness may be rooted in mast cell activation syndrome

open access: yesInternational Journal of Infectious Diseases, 2020
Objectives: One-fifth of Covid-19 patients suffer a severe course of Covid-19 infection; however, the specific causes remain unclear. Mast cells (MCs) are activated by SARS-CoV-2.
Lawrence B. Afrin   +2 more
doaj   +1 more source

Role of phosphoinositide 3-kinases in mast cell activation [PDF]

open access: yes, 2009
Mast cells are primary effector cells in allergy and chronic inflammation. Class IB (PI3Kγ) and class IA (PI3Kδ) PI3K have been shown to play major roles in mast cell activation: antigen/IgE stimulation triggers autocrine/paracrine activation of mast ...
Collmann, Emilie
core   +1 more source

Targeting Sphingosine Kinase Isoforms Effectively Reduces Growth and Survival of Neoplastic Mast Cells With D816V-KIT

open access: yesFrontiers in Immunology, 2018
Mastocytosis is a disorder resulting from an abnormal mast cell (MC) accumulation in tissues that is often associated with the D816V mutation in KIT, the tyrosine kinase receptor for stem cell factor. Therapies available to treat aggressive presentations
Geethani Bandara   +7 more
doaj   +1 more source

MiR-146a: a key microRNA involved in regulating mast cell survival and T lymphocyte differentiation [PDF]

open access: yes, 2013
Mast cells are long-lived, tissue-resident cells of the innate immune system. Since the identification of mechanisms that regulate mast cell proliferation, survival and overall homeostasis in the tissues may have important implications for the treatment ...
Rusca, Nicole-Lily
core   +1 more source

A Survey of Methodologies for Assessing Mast Cell Density and Activation in Patients with Functional Abdominal Pain Disorders

open access: yesGastrointestinal Disorders, 2021
The aim was to assess methods utilized in assessing mast cell involvement in functional abdominal pain disorders (FAPDs), specifically to describe variability in methods utilized to assess both mast cell density and activation and determine if a ...
Hunter Friesen   +4 more
doaj   +1 more source

Nasal Immunization With Small Molecule Mast Cell Activators Enhance Immunity to Co-Administered Subunit Immunogens

open access: yesFrontiers in Immunology, 2021
Mast cell activators are a novel class of mucosal vaccine adjuvants. The polymeric compound, Compound 48/80 (C48/80), and cationic peptide, Mastoparan 7 (M7) are mast cell activators that provide adjuvant activity when administered by the nasal route ...
Brandi T. Johnson-Weaver   +10 more
doaj   +1 more source

Granule Leakage Induces Cell-Intrinsic, Granzyme B-Mediated Apoptosis in Mast Cells

open access: yesFrontiers in Cell and Developmental Biology, 2021
Mast cells are multifunctional immune cells scattered in tissues near blood vessels and mucosal surfaces where they mediate important reactions against parasites and contribute to the pathogenesis of allergic reactions.
Sabrina Sofia Burgener   +14 more
doaj   +1 more source

Association of mast cell density, microvascular density and endothelial area with clinicopathological parameters and prognosis in canine mammary gland carcinomas

open access: yesActa Veterinaria Scandinavica, 2022
Background Mast cell density has been shown to have both enhancing and inhibiting effects on tumour progression and the ability to predict breast cancer behaviour in humans. However, prognostic results have been contradictory.
Simona Sakalauskaitė   +3 more
doaj   +1 more source

Human placental extract suppresses mast cell activation and induces mast cell apoptosis

open access: yesAllergy, Asthma & Clinical Immunology, 2023
Background Human placental extract (HPE) has been documented to facilitate the healing of certain disorders including allergy. However, the effects of HPE on the functionality of mast cells, a critical cell type in allergic diseases, have not been ...
Tongqian Wu   +8 more
doaj   +1 more source

Evaluation of Mast Cell Activation Syndromes: Impact of Pathology and Immunohistology [PDF]

open access: yes, 2012
Mast cell activation syndromes (MCAS) are clinically defined disease states with a largely unknown morphological background. Since mastocytosis may be associated with MCAS, it is crucial in every patient to document or exclude mastocytosis by appropriate
Horny, H. -P., Valent, P., Sotlar, K.
core   +1 more source

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