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Clinical Trial Summary

The study aims at investigating whether the natural calcium isotope ratio (δ44/40Ca) in urine and serum differs between postmenopausal women aged 50 to 75 years suffering from osteoporosis and a healthy control group and whether δ44/40Ca in urine and serum can be used for the diagnosis of osteoporosis or whether further parameters have to be included.


Clinical Trial Description

According to the operational definition of WHO in the year 1994 osteoporosis is present if bone mineral content as assessed by DXA densitometry of the lumbar spine and/or proximal femur (total area or femoral neck) deviates from the mean of a 20 to 29 years old women by at least -2.5 standard deviations (DXA T-Score ≤ -2.5). This definition of osteoporosis is only valid after exclusion of other disorders, which may be associated with a reduction of bone mineral content and exclusion of osteomalacia. By an individual screening 100 women will be included in the study who are characterized concerning existing or non-existing osteoporosis according to the guidelines of DVO 2014 and ISCD 2015, respectively. According to the EPOS study results the prevalence of osteoporosis in Germany in postmenopausal women aged 50 to 60 years is about 15% and at the age of more than 70 years about 45%. In case of risk factors, such as hip fracture of father and/or mother, smoking, lactose intolerance, vegan nutrition, underweight (BMI < 20), diabetes, intake of loop diuretics, glucocorticoids, aromatase inhibitors and proton pump inhibitors a higher prevalence can be assumed. Thus by electing women with at least one risk factor of osteoporosis a higher proportion may meet the criteria of osteoporosis. Since some women are expected to present with low vitamin D levels and so far are expected to present with osteomalacia, and since other exclusion criteria may occur, N = 100 women will be investigated, in order to obtain data from N = 80 women who may meet the criteria of the target group (about N = 40 with osteoporosis and about N = 40 without osteoporosis (normal control). ;


Study Design


Related Conditions & MeSH terms


NCT number NCT02967978
Study type Observational
Source Clinical Research Center Kiel GmbH
Contact
Status Completed
Phase
Start date November 22, 2016
Completion date August 16, 2019

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