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Toxicological information

Basic toxicokinetics

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Administrative data

Endpoint:
basic toxicokinetics in vivo
Type of information:
experimental study
Adequacy of study:
supporting study
Study period:
1999
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment

Data source

Reference
Reference Type:
publication
Title:
Bioavailability, biodistribution and toxicity of biocal a new calcium source. Comparative studies in rats
Author:
Sarabia, MI, et al.
Year:
1999
Bibliographic source:
Nutr Res 19: 1223–1231

Materials and methods

Objective of study:
absorption
Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
Application of 30 mg Ca/kg bw/d (45Ca-Gluconate) by gavage, for 12 days
GLP compliance:
not specified

Test material

Constituent 1
Chemical structure
Reference substance name:
Calcium gluconate
EC Number:
206-075-8
EC Name:
Calcium gluconate
Cas Number:
299-28-5
Molecular formula:
C6H12O7.1/2Ca
IUPAC Name:
calcium bis(2,3,4,5,6-pentahydroxyhexanoate) (non-preferred name)
Radiolabelling:
yes
Remarks:
45 Ca

Test animals

Species:
rat
Strain:
not specified
Sex:
not specified

Administration / exposure

Route of administration:
oral: gavage
Vehicle:
not specified
Duration and frequency of treatment / exposure:
12 days; daily
Doses / concentrations
Dose / conc.:
30 mg/kg bw/day (nominal)
No. of animals per sex per dose / concentration:
no data
Control animals:
not specified

Results and discussion

Main ADME results
Type:
absorption
Results:
99%

Toxicokinetic / pharmacokinetic studies

Transfer into organs
Key result
Test no.:
#1
Transfer type:
other: transfer to bones
Observation:
distinct transfer
Remarks:
bones
Details on excretion:
1.2 % Ca was excreted in urin

Applicant's summary and conclusion

Conclusions:
Ca2+ applied by gavage is almost completely resorbed and built into the bones. 1.2 % of the dose was excreted in urine
Executive summary:

In a metabolism study, 45-Calcium bis(2,3,4,5,6)-pentahydroxyhexanoate was administered to rats daily by oral gavage at a dose level of 30 mg/kg bw/day for 12 days.

The test material was almost completely resorbed and built into the bones. 1.2 % of the dose was excreted in urine.