Open Access Research article

Serum concentrations of 25-hydroxyvitamin D and immunoglobulins in an older Swiss cohort: results of the Senior Labor Study

Benjamin Sakem1, Cristina Nock2, Zeno Stanga34, Pedro Medina1, Urs E Nydegger1, Martin Risch5 and Lorenz Risch167*

Author Affiliations

1 Division of Clinical Chemistry, Labormedizinisches Zentrum Dr. Risch, Waldeggstrasse 37, CH-3097, Liebefeld bei Bern, Switzerland

2 Private Medical Office, Grundgasse 2, CH-6460, Altdorf, Switzerland

3 Division of Endocrinology, Diabetes and Clinical Nutrition, University Hospital, Bern, Switzerland

4 Division of General Internal Medicine, University Hospital, Bern, Switzerland

5 Central Laboratory, Kantonsspital Graubünden, Chur, Switzerland

6 Private University of the Principality of Liechtenstein, Triesen, Principality of Liechtenstein

7 Division of Clinical Biochemistry Medical University Innsbruck, Innsbruck, Austria

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BMC Medicine 2013, 11:176  doi:10.1186/1741-7015-11-176

Published: 1 August 2013

Additional files

Additional file 1:

Monthly variation of 25(OH)D and components of the humoral immune system in older Swiss. Monthly follow-up of mean ± 1 SD serum levels of 25(OH)D and humoral immune components. The IgE increment in summer likely reflects pollen exposure of the subjects. Number of samples collected per month are listed in brackets on the abscissa.

Format: PPTX Size: 225KB Download file

Open Data

Additional file 2:

Percentage increase/decrease in level of 25(OH)D and humoral immune components in older Swiss. The percentage increase or decrease in seasonal variation of the humoral immune components showing significant correlation in seasonal variation with 25(OH)D, compared to the month of January (100%) is further illustrated here.

Format: PPTX Size: 51KB Download file

Open Data