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01.12.2015 | Research article | Ausgabe 1/2015 Open Access

BMC Endocrine Disorders 1/2015

The relationship between microvascular complications and vitamin D deficiency in type 2 diabetes mellitus

Zeitschrift:
BMC Endocrine Disorders > Ausgabe 1/2015
Autoren:
Celil Alper Usluogullari, Fevzi Balkan, Sedat Caner, Rifki Ucler, Cafer Kaya, Reyhan Ersoy, Bekir Cakir
Wichtige Hinweise

Competing interests

The authors declare that they have no competing interests.

Authors’ contributions

CAU collected patients, analysis and interpretation of data, and wrote the article, FB made statistics, drafted manuscript, SC participated in the design of the study and performed the statistical analysis, RU collected patients, wrote the article, CF collected patients, RE designed study, coordination and helped to draft the manuscript, BC designed study, coordination and helped to draft the manuscript. All authors read and approved the final manuscript.

Abstract

Background

Vitamin D deficiency is reported as a possible risk factor for the development of diabetes in several epidemiologic studies. In this study, we investigated the frequency of 25-OH vitamin D deficiency in type 2 diabetes mellitus and the relationship between 25-OH vitamin D deficiency and the prevalence of microvascular complications.

Methods

In this retrospective study, we evaluated the medical records of 557 patients with type 2 diabetes admitted to the Endocrinology Outpatient Clinic from January to March 2010 and 112 healthy controls randomly selected from individuals admitted to the hospital for a check-up and who had a laboratory result for serum 25-OH vitamin D concentrations at screening. The levels of 25-OH vitamin D in patients with type 2 diabetes and the relationship between 25-OH vitamin D deficiency and microvascular complications were investigated.

Results

No significant difference in serum 25-OH vitamin D concentrations was observed between the diabetic and control groups. No correlation was observed between HbA1C and serum 25-OH vitamin D levels. Serum 25-OH vitamin D levels were lower in diabetic patients with nephropathy, and patients not using any medication, i.e., those treated with dietary changes alone, had a higher prevalence of nephropathy.

Conclusion

Vitamin D deficiency is more common in diabetic patients with nephropathy. When microvascular complications were evaluated, vitamin D levels were found to be lower in patients in whom these complications were more severe. Vitamin D deficiency is therefore associated with microvascular complications in diabetic patients.
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