Registration Dossier

Administrative data

Endpoint:
immunotoxicity, other
Remarks:
in vitro
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
documentation insufficient for assessment

Data source

Reference
Reference Type:
publication
Title:
Immunotoxicological evaluation of environmental chemicals utilizing mouse lymphocyte mitogenesis test.
Author:
Sakazaki, H., Ueno, H., Umetani, K., Utsumi, H. and Nakamuro, K.
Year:
2001
Bibliographic source:
J. Health Sci., 47(3):258-271.

Materials and methods

Principles of method if other than guideline:
no guideline reported
GLP compliance:
not specified

Test material

Reference
Name:
Unnamed
Type:
Constituent

Results and discussion

Any other information on results incl. tables

B Cell IC50 = 1x10E-5 mol/L
Inhibitory Pattern: D

T Cell
Inhibitory Pattern: A

Pattern A = chemical showed no inhibition within the concentration range assayed.

Pattern D = inhibition occurred suddenly at certain concentrations, probably by toxicity.

Pattern A was judged negative. Pattern D was judged positive.

 

Applicant's summary and conclusion

Conclusions:
Positive in B cell
Negative in T cell
Executive summary:

A lymphocyte mitogenesis test was conducted with o-phenylenediamine. The growth inhibitory effect of oPDA on mouse splenic lymphocytic mitogenesis was assessed using lipopolysacchardie and concanavalin A as the specific mitogen for B cells and T cells. The DNA content of grown cells was determined by the novel ethidium bromide-fluorophotometry method, with 96-well microplates. The test substance showed inhibition suddenly at certain concentrations in B cell (probably by toxicity), but showed no inhibition in T cell.