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Toxicological information

Eye irritation

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Administrative data

Endpoint:
eye irritation: in vivo
Type of information:
migrated information: read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: The study was conducted with a supporting substance, but according to the OECD guideline 405 and is fully GLP-compliant.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Report Date:
1993

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
OECD Guideline 405 (Acute Eye Irritation / Corrosion)
Deviations:
no
GLP compliance:
yes

Test material

Reference
Name:
Unnamed
Type:
Constituent

Test animals / tissue source

Species:
rabbit
Strain:
other: White russian (Albino)
Details on test animals or tissues and environmental conditions:
TEST ANIMALS
- Source: ASTA Medica AG
- Age at study initiation: 8-9 months
- Weight at study initiation: 2.54 - 3.02 kg
- Housing: individually in stainless cahes with grating floor, type ASTA, size 48.5 x 40 x 36.5 cm
- Diet (e.g. ad libitum): approx. 120 g/day / animal standard diet, ssniff K, special diet for rabbits
- Water (e.g. ad libitum): drinking water ad libitum
- Acclimation period: at least one day under test conditions

ENVIRONMENTAL CONDITIONS
- Temperature (°C): 19.5 - 20.5
- Humidity (%): 40 - 70
- Photoperiod (hrs dark / hrs light): 12 hours darkness / 12 hours artificial lightning

Test system

Vehicle:
unchanged (no vehicle)
Controls:
no
Amount / concentration applied:
TEST MATERIAL
- Amount(s) applied (volume or weight with unit): 39.7 - 44.1 mg (representing a volume of about 0.1 ml)
Duration of treatment / exposure:
after substance application the eye was not rinsed
Observation period (in vivo):
3 days after application
Number of animals or in vitro replicates:
3
Details on study design:
REMOVAL OF TEST SUBSTANCE
- Washing (if done): no

SCORING SYSTEM:
According to Draize scores were calculated with the individual grades on cornea, iris, and conjunctiva recorded at examination times 1, 24, 48 and 72 hours. The irritation index is given by the sum of scores.
A corresponding gradation was allocated to this index by the following scheme.

Index Ranges Gradation
0 - 10 non-irritant
11 - 25 slightly irritant
26 - 56 moderatly irritant
57 - 110 severely irritant

TOOL USED TO ASSESS SCORE:
Cliptrix pencil light

Results and discussion

In vivo

Resultsopen allclose all
Irritation parameter:
cornea opacity score
Remarks:
Opacity
Basis:
animal #1
Time point:
other: 1,24,48,72 h
Score:
0
Max. score:
4
Irritation parameter:
cornea opacity score
Remarks:
Opacity
Basis:
animal #2
Time point:
other: 1,24,48,72 h
Score:
0
Max. score:
4
Irritation parameter:
cornea opacity score
Remarks:
Opacity
Basis:
animal #3
Time point:
other: 1,24,48,72 h
Score:
0
Max. score:
4
Irritation parameter:
cornea opacity score
Remarks:
Area of cornea involved
Basis:
animal #1
Time point:
other: 1,24,48,72 h
Score:
0
Max. score:
4
Irritation parameter:
cornea opacity score
Remarks:
Area of cornea involved
Basis:
animal #2
Time point:
other: 1,24,48,72 h
Score:
0
Max. score:
4
Irritation parameter:
cornea opacity score
Remarks:
Area of cornea involved
Basis:
animal #3
Time point:
other: 1,24,48,72 h
Score:
0
Max. score:
4
Irritation parameter:
iris score
Basis:
animal #1
Time point:
other: 1,24,48,72 h
Score:
0
Max. score:
2
Irritation parameter:
iris score
Basis:
animal #2
Time point:
other: 1,24,48,72 h
Score:
0
Max. score:
2
Irritation parameter:
iris score
Basis:
animal #3
Time point:
other: 1,24,48,72 h
Score:
0
Max. score:
2
Irritation parameter:
conjunctivae score
Remarks:
Redness
Basis:
animal #1
Time point:
other: 1,24,48,72 h
Score:
0
Max. score:
3
Irritation parameter:
conjunctivae score
Remarks:
Redness
Basis:
animal #2
Time point:
other: 1,24,48,72 h
Score:
0
Max. score:
3
Irritation parameter:
conjunctivae score
Remarks:
Redness
Basis:
animal #3
Time point:
other: 1,24,48,72 h
Score:
0
Max. score:
3
Irritation parameter:
conjunctivae score
Remarks:
Discharge
Basis:
animal #1
Time point:
other: 1,24,48,72 h
Score:
0
Max. score:
3
Irritation parameter:
conjunctivae score
Remarks:
Discharge
Basis:
animal #2
Time point:
other: 1,24,48,72 h
Score:
0
Max. score:
3
Irritation parameter:
conjunctivae score
Remarks:
Discharge
Basis:
animal #3
Time point:
other: 1,24,72 h
Score:
0
Max. score:
3
Irritation parameter:
conjunctivae score
Remarks:
Redness
Basis:
animal #3
Time point:
other: 48 h
Score:
1
Max. score:
3
Reversibility:
fully reversible
Irritation parameter:
chemosis score
Basis:
animal #1
Time point:
other: 1,24,48,72 h
Score:
0
Max. score:
4
Irritation parameter:
chemosis score
Basis:
animal #2
Time point:
other: 1,24,48,72 h
Score:
0
Max. score:
4
Irritation parameter:
chemosis score
Basis:
animal #3
Time point:
other: 1,24,48,72 h
Score:
0
Max. score:
4

Applicant's summary and conclusion

Interpretation of results:
not irritating
Remarks:
Migrated information Criteria used for interpretation of results: OECD GHS
Conclusions:
Glycyl-L-glutamine is not irritating to the eye.
Executive summary:

Only 1 animal showed a score of 1 for conjunctivae redness at 48 hours which was no longer evident at 72 hours. Therefore Glycyl-L-glutamine is considered to be not irritating to the eye.