Table 1 Ability of acute exposure to cromolyn to inhibit features of PCA or PSA responses in vivo or mast cell degranulation in vitro in rats and mice

From: Evidence questioning cromolyn’s effectiveness and selectivity as a ‘mast cell stabilizer’ in mice

   

Previous reports

This report

   

Rat

Mouse

Rat

Mouse

In vivo

PCA

Evans blue extravasation

Yes13, 15, 30

No30

Yes (10 mg/kg)

No (10 or 100 mg/kg)

  

Ear swelling

   

No (10 or 100 mg/kg)

  

Leukocyte infiltration

   

No (10 or 100 mg/kg)

 

PSA

Histamine release

  

Yes (10 mg/kg)

No (10 or 100 mg/kg)

  

Temperature decrease

   

No (10 or 100 mg/kg)

  

mMCP-1 release

   

Yes (only at 100 mg/kg)

In vitro

PMCs

 

Yes12, 13, 14, 15

 

Yes (10 or 100 μM)

No (1–100 μM)

 

BMCMCs

 

No39

No15, 31

 

No (1–100 μM)

 

Mucosal mast cells

 

No14

   
  1. The table shows results obtained when cromolyn was injected either simultaneously with13, 15 or immediately before13, 30 antigen challenge in vivo, or added either simultaneously with12, 13, 14, 15, 31 or 5 min before12, 39 antigen challenge in vitro. All of the results from this report are from experiments in which cromolyn was administered simultaneously with antigen.