Morphologic and morphometric analysis of the mast cells from human heart biopsies

1987 ◽  
Vol 20 (3-4) ◽  
pp. 288-290 ◽  
Author(s):  
K. Rydzyński ◽  
H. Dalen ◽  
T. Saetersdal ◽  
H. Engedal
Author(s):  
Vincenzo Patella ◽  
Arturo Genovese ◽  
Gianni Marone
Keyword(s):  

2000 ◽  
Vol 68 (10) ◽  
pp. 5517-5524 ◽  
Author(s):  
Arturo Genovese ◽  
Jean-Pierre Bouvet ◽  
Giovanni Florio ◽  
Bärbel Lamparter-Schummert ◽  
Lars Björck ◽  
...  

ABSTRACT Human heart mast cells (HHMC) have been identified in heart tissue, perivascularly, and in the intima of coronary arteries. In vitro activation of isolated HHMC induces the release of vasoactive and proinflammatory mediators (histamine, tryptase, and cysteinyl leukotriene C4 [LTC4]). We investigated the effects of several bacterial proteins on HHMC activation in vitro. HHMC released histamine, tryptase, and LTC4 in response toStaphylococcus aureus Cowan 1 and the immunoglobulin (Ig)-binding protein A, but not to S. aureus Wood 46, which does not synthesize protein A. The effect of protein A was inhibited by preincubation with monoclonal IgM VH3+. Some strains of Peptostreptococcus magnus express an Ig light chain-binding surface protein called protein L. Such bacteria and soluble protein L stimulated the release of preformed and newly synthesized mediators from HHMC. Preincubation of HHMC with either protein A or protein L resulted in complete cross-desensitization to a subsequent challenge with the heterologous stimulus or anti-IgE. Monoclonal IgE (κ chains) blocked protein L-induced release, whereas IgE (λ chains) had no effect. Streptococcal protein G, formyl-containing tripeptide, and pepstatin A did not activate HHMC. Bacterial products protein A and protein L and intact bacteria (S. aureus and P. magnus) activate HHMC by acting as Ig superantigens.


1995 ◽  
Vol 44 (S1) ◽  
pp. S22-S23 ◽  
Author(s):  
V. Patella ◽  
I. Marinò ◽  
B. Lamparter ◽  
A. Genovese ◽  
M. Adt ◽  
...  
Keyword(s):  

1997 ◽  
Vol 113 (1-3) ◽  
pp. 200-202 ◽  
Author(s):  
Vincenzo Patella ◽  
Gennaro de Crescenzo ◽  
Isabella Marinò ◽  
Arturo Genovese ◽  
Monika Adt ◽  
...  

1995 ◽  
Vol 107 (1-3) ◽  
pp. 72-75 ◽  
Author(s):  
Gianni Marone ◽  
Vincenzo Patella ◽  
Gennaro de Crescenzo ◽  
Arturo Genovese ◽  
Monika Adt

2017 ◽  
Vol 38 (suppl_1) ◽  
Author(s):  
M. Sandstedt ◽  
M. Jansson ◽  
K. Vukusic ◽  
M. Jonsson ◽  
A. Oldfors ◽  
...  

1995 ◽  
Vol 106 (4) ◽  
pp. 386-393 ◽  
Author(s):  
Vincenzo Patella ◽  
Gennaro de Crescenzo ◽  
Anna Ciccarelli ◽  
Isabella Marinò ◽  
Monika Adt ◽  
...  

2000 ◽  
pp. 455-477 ◽  
Author(s):  
Marone Gianni ◽  
Gennaro De Crescenzo ◽  
Vincenzo Patella ◽  
Francescopaolo Granata ◽  
Arturo Genovese ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document