NCT03156179

Study of Calcium Metabolism in Teenage Girls With Type 1 Diabetes

Assessment of Calcium Metabolism in Adolescent Girls With Type 1 Diabetes

• Status: Completed
• Phase: —
• Study type: Observational
• Enrollment: 22 (actual)
• Sponsor: University of Rochester · Academic / Other
• Sex: Female
• Age: 9 Years – 18 Years
• Healthy volunteers: Not accepted

Summary

The proposed pilot study will enroll 33 adolescent females with type 1 diabetes for the assessment of whole body calcium metabolism using dual stable calcium isotopes. This is the state of the art technique for assessing calcium metabolism in the body and has been used in both healthy and diseased pediatric populations.

Conditions

• Diabetes Mellitus, Type 1

Interventions

Type	Name	Description
DIAGNOSTIC_TEST	calcium isotope analysis	A dual stable calcium isotope method will be used to determine fractional calcium absorption. Two stable calcium isotopes will be administered to participants in order to determine fractional calcium absorption. 7 mg of 44Ca will be administered orally in 60 mL of liquid at the start of the study. 2 mg of 42Ca will then be administered intravenously. 24 hour urine collection will begin immediately following oral tracer administration for the assessment of urinary calcium excretion. The enrichment of 44Ca and 42Ca in urine will be determined by magnetic sector thermal ionization mass spectrometry. The isotopic ratios of 44Ca and 42Ca to 48Ca (another naturally occurring calcium isotope present in the human body) will be calculated (42Ca/48Ca and 44Ca/48Ca). The relative fraction of the oral to intravenously administered isotope in the 24 hour urine sample \[(42Ca/48Ca) / (44Ca/48Ca)\] is the fractional calcium absorption.

Timeline

• Start date: 2015-09-01
• Primary completion: 2016-12-31
• Completion: 2016-12-31
• First posted: 2017-05-17
• Last updated: 2017-05-17

Locations

1 site across 1 country: United States