scholarly journals Vaginal Bacterial Flora Activates Rat Peritoneal Mast Cells

2002 ◽  
Vol 15 (3) ◽  
pp. 233-238 ◽  
Author(s):  
E. Brzezińska-Blaszczyk ◽  
M. Wasiela
Keyword(s):  
Mast Cells ◽  
Histamine Release ◽  
Ureaplasma Urealyticum ◽  
Bacterial Flora ◽  
Mycoplasma Hominis ◽  
Bacterial Strains ◽  
Histamine Secretion ◽  
Peritoneal Mast Cells ◽  
Rat Peritoneal Mast Cells

Sixteen strains of physiological and pathological vaginal bacteria were tested for their ability to secrete histamine from rat peritoneal mast cells in vitro. We noticed that Mycoplasma hominis -induced histamine release was very high (up to 53.6%). The stimulation of rat mast cells with Staphylococccus cohnii, Staphylococcus coagulase(-) (two strains), Ureaplasma urealyticum, Peptostreptococcus spp., Bacteroides capillosus, Staphylococcus aureus and Streptococcus agalactiae resulted in lower, but significant histamine secretion (11.2%–17.5%). Other bacterial strains ( Staphylococcus epidermidids, Enterococcus faecalis, Escherichia coli, Actinomyces naeslundii (two strains) and Lactobacillus fermentum (two strains) caused very low (4.2 % – 8.8%) histamine release.

scholarly journals Anti-immunoglobulin-induced histamine secretion by rat peritoneal mast cells studied by immunoferritin electron microscopy.

1975 ◽  
Vol 142 (2) ◽  
pp. 391-402 ◽  
Author(s):  
D Lawson ◽  
C Fewtrell ◽  
B Gomperts ◽  
M Raff
Keyword(s):  
Electron Microscopy ◽  
Mast Cell ◽  
Mast Cells ◽  
Histamine Release ◽  
Histamine Secretion ◽  
Calcium Dependent ◽  
Peritoneal Mast Cells ◽  
Rat Peritoneal Mast Cells

We have used ferritin-conjugated divalent and monovalent anti-Ig antibodies to study simultaneously, histamine secretion and the ultrastructural distribution and redistribution of Ig receptors on rat peritoneal mast cells. We conclude that (a) divalent anti-Ig is required for both receptor redistribution and for calcium-dependent degranulation and histamine release, (b) divalent anti-Ig induces patching and pinocytosis but not capping of Ig molecules, (c) neither capping nor pinocytosis are required for triggering and if clustering is necessary, then less than 10 Ig molecules are required per cluster, and (d) degranulation (and histamine release) is not an all or none response of the mast cell.

scholarly journals Scutellariae radix. X. Inhibitory effects of various flavonoids on histamine release from rat peritoneal mast cells in vitro.

1984 ◽  
Vol 32 (12) ◽  
pp. 5051-5054 ◽  
Author(s):  
MICHINORI KUBO ◽  
HIDEAKI MATSUDA ◽  
YOSHIYUKI KIMURA ◽  
HIROMICHI OKUDA ◽  
SHIGERU ARICHI
Keyword(s):  
Mast Cells ◽  
Histamine Release ◽  
Inhibitory Effects ◽  
Scutellariae Radix ◽  
Peritoneal Mast Cells ◽  
Rat Peritoneal Mast Cells
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