Mast Cells in Bronchial Connective Tissue of Man: Their Modifications in Asthma and after Treatment with the Histamine Liberator 48/80

1961 ◽  
Vol 18 (6) ◽  
pp. 348-358 ◽  
Author(s):  
G. Salvato
Keyword(s):  
Mast Cells ◽  
Connective Tissue ◽  
Histamine Liberator

scholarly journals MRGPR-mediated activation of local mast cells clears cutaneous bacterial infection and protects against reinfection

2019 ◽  
Vol 5 (1) ◽  
pp. eaav0216 ◽  
Author(s):  
Mohammad Arifuzzaman ◽  
Yuvon R. Mobley ◽  
Hae Woong Choi ◽  
Pradeep Bist ◽  
Cristina A. Salinas ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Wound Healing ◽  
Dendritic Cells ◽  
Mast Cells ◽  
Connective Tissue ◽  
Selective Activation ◽  
Adaptive Immune ◽  
Antigen Presenting ◽  
G Protein Coupled ◽  
Draining Lymph Nodes

Mast cells (MCs) are strategically distributed at barrier sites and prestore various immunocyte-recruiting cytokines, making them ideal targets for selective activation to treat peripheral infections. Here, we report that topical treatment with mastoparan, a peptide MC activator (MCA), enhances clearance ofStaphylococcus aureusfrom infected mouse skins and accelerates healing of dermonecrotic lesions. Mastoparan functions by activating connective tissue MCs (CTMCs) via the MRGPRX2 (Mas-related G protein-coupled receptor member X2) receptor. Peripheral CTMC activation, in turn, enhances recruitment of bacteria-clearing neutrophils and wound-healing CD301b+dendritic cells. Consistent with MCs playing a master coordinating role, MC activation also augmented migration of various antigen-presenting dendritic cells to draining lymph nodes, leading to stronger protection against a second infection challenge. MCAs therefore orchestrate both the innate and adaptive immune arms, which could potentially be applied to combat peripheral infections by a broad range of pathogens.

Canine Extracutaneous Mast-cell Tumours Consisting of Connective Tissue Mast Cells

2000 ◽  
Vol 123 (4) ◽  
pp. 306-310 ◽  
Author(s):  
N. Iwata ◽  
K. Ochiai ◽  
T. Kadosawa ◽  
M. Takiguchi ◽  
T. Umemura
Keyword(s):  
Mast Cell ◽  
Mast Cells ◽  
Connective Tissue

Extensive proliferation of mature connective-tissue type mast cells in vitro

Nature ◽  
1986 ◽  
Vol 324 (6092) ◽  
pp. 65-67 ◽  
Author(s):  
Tatsutoshi Nakahata ◽  
Toshimi Kobayashi ◽  
Akira Ishiguro ◽  
Kohichiro Tsuji ◽  
Kuniaki Naganuma ◽  
...  
Keyword(s):  
Mast Cells ◽  
Connective Tissue ◽  
Tissue Type

Mast cell heterogeneity

1984 ◽  
Vol 62 (6) ◽  
pp. 734-737 ◽  
Author(s):  
F. Shanahan ◽  
J. A. Denburg ◽  
J. Bienenstock ◽  
A. D. Befus
Keyword(s):  
Mast Cell ◽  
Mast Cells ◽  
Connective Tissue ◽  
Regulatory Peptides ◽  
Cell Heterogeneity ◽  
Cell Secretion ◽  
Biochemical Basis ◽  
Mucosal Mast Cells ◽  
Mast Cell Heterogeneity

Increasing evidence for the existence of inter- and intra-species mast cell heterogeneity has expanded the potential biological role of this cell. Early studies suggesting that mast cells at mucosal sites differ morphologically and histochemically from connective tissue mast cells have been confirmed using isolated intestinal mucosal mast cells in the rat and more recently in man. These studies also established that mucosal mast cells are functionally distinct from connective tissue mast cells. Thus, mucosal and connective tissue mast cells differ in their responsiveness to a variety of mast cell secretagogues and antiallergic agents. Speculation about the therapeutic use of antiallergic drugs in disorders involving intestinal mast cells cannot, therefore, be based on extrapolation from studies of their effects on mast cells from other sites. Regulatory mechanisms for mast cell secretion may also be heterogeneous since mucosal mast cells differ from connective tissue mast cells in their response to a variety of physiologically occurring regulatory peptides. The development of techniques to purify isolated mast cell sub-populations will facilitate future analysis of the biochemical basis of the functional heterogeneity of mast cells.

Mutual Phenotypic Changes between Connective Tissue Type and Mucosal Mast Cells

1987 ◽  
Vol 82 (3-4) ◽  
pp. 244-248 ◽  
Author(s):  
Yukihiko Kitamura ◽  
Yuzuru Kanakura ◽  
Sanae Sonoda ◽  
Hidekazu Asai ◽  
Toru Nakano
Keyword(s):  
Mast Cells ◽  
Connective Tissue ◽  
Tissue Type ◽  
Phenotypic Changes ◽  
Mucosal Mast Cells

Interactions between Mast Cells, Fibroblasts and Connective Tissue Components

1985 ◽  
Vol 77 (1-2) ◽  
pp. 96-102 ◽  
Author(s):  
Fred M. Atkins ◽  
Marc M. Friedman ◽  
Pillarisetti V. Subba Rao ◽  
Dean D. Metcalfe
Keyword(s):  
Mast Cells ◽  
Connective Tissue

scholarly journals CYTOLOGICAL AND PHARMACOLOGICAL OBSERVATIONS ON THE RELEASE OF HISTAMINE BY MAST CELLS

1954 ◽  
Vol 100 (2) ◽  
pp. 217-224 ◽  
Author(s):  
Don W. Fawcett
Keyword(s):  
Mast Cells ◽  
Peritoneal Fluid ◽  
Appreciable Amount ◽  
Fluid Solution ◽  
Tyrode Solution ◽  
Morphological Effect ◽  
Liberation Of Histamine ◽  
To Come ◽  
Histamine Liberator ◽  
Extensive Release

Experimental solutions known to affect mast cells or to cause liberation of histamine from the tissue were introduced into the peritoneal cavity of rats. Samples of the peritoneal fluid were withdrawn at intervals afterward and assayed for histamine and the condition of the mast cells was subsequently ascertained by microscopic examination of stained spreads of the mesenteries. Intraperitoneal injection of distilled water caused osmotic disruption of the mast cells and the appearance of an appreciable amount of histamine in the peritoneal fluid. Injection of Tyrode solution alone was not particularly damaging to the mast cells and little or no histamine was released. Injection of Tyrode solution containing compound 48/80 resulted in extensive release of granules from mast cells and the appearance of large amounts of histamine in the fluid. Solution of 48/80 failed however to cause histamine release when injected into rats whose subserosal mast cells had previously been destroyed. A series of increasing doses of compound 48/80 had a graded morphological effect upon mast cells and resulted in a graded increase in the amount of histamine that appeared in the peritoneal fluid. It is unlikely therefore that this compound acts by simply lysing the plasma membrane. It is concluded that mast cells in the rat are extraordinarily rich in histamine which is liberated under conditions which cause mast cells to release their granules. The histamine set free by the potent histamine liberator, compound 48/80, appears to come principally from the tissue mast cells.

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