P4-402: Exploring associations between serum 25-hydroxyvitamin D and domain-specific cognitive performance using Restricted Cubic Splines: A cross-sectional study in Dutch elderly

2013 ◽  
Vol 9 ◽  
pp. P882-P883
Author(s):  
Elske Brouwer-Brolsma ◽  
Rosalie Dhonuskhe-Rutten ◽  
Janneke van Wijngaarden ◽  
Nikita van der Zwaluw ◽  
Paulette in 't Veld ◽  
...  
Keyword(s):  
Cognitive Performance ◽  
Cross Sectional Study ◽  
Cubic Splines ◽  
Sectional Study ◽  
Cross Sectional ◽  
Hydroxyvitamin D ◽  
Domain Specific ◽  
25 Hydroxyvitamin D ◽  
Restricted Cubic Splines

Variations in the Vitamin D-Binding Protein (DBP) Gene Are Related to Lower 25-Hydroxyvitamin D Levels in Healthy Girls: A Cross-Sectional Study

2013 ◽  
Vol 79 (3) ◽  
pp. 162-168 ◽  
Author(s):  
Betânia R. Santos ◽  
Luis P.G. Mascarenhas ◽  
Margaret C.S. Boguszewski ◽  
Poli Mara Spritzer
Keyword(s):  
Vitamin D ◽  
Binding Protein ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Vitamin D Binding Protein ◽  
Cross Sectional ◽  
Hydroxyvitamin D ◽  
25 Hydroxyvitamin D

scholarly journals Vitamin D Deficiency Is Common in Ghana despite Abundance of Sunlight: A Multicentre Comparative Cross-Sectional Study

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Samuel Asamoah Sakyi ◽  
Maxwell Hubert Antwi ◽  
Linda Ahenkorah Fondjo ◽  
Edwin Ferguson Laing ◽  
Richard K. Dadzie Ephraim ◽  
...  
Keyword(s):  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Geographical Area ◽  
Daily Intake ◽  
Cross Sectional Study ◽  
The Body ◽  
Sectional Study ◽  
Cross Sectional ◽  
Hydroxyvitamin D ◽  
25 Hydroxyvitamin D

Background. Vitamin D is a steroid hormone important for the normal functioning of the body. It is produced through skin exposure to sunlight and from the diet. Although Ghana is located in the tropics where sunlight is abundant, factors like culture, diet, skin pigmentation, variation in the ozone layer, and geographical area influence the optimization of vitamin D concentration. It is imperative to evaluate the interplay between sunshine exposure, proinflammatory cytokines, and mediators of vitamin D metabolism and their relationship to vitamin D status in three geographical sections among apparent healthy Ghanaians. Methods and Results. In a cross-sectional study, a total of five hundred (500) healthy blood donors from three geographical areas in Ghana were enrolled. Their age ranged from 17 to 55 years with a mean age of 27.97 ± 8.87 years. The overall prevalence rate of vitamin D deficiency was 43.6% (218/500), with 41.2% (91/221), 45.3% (63/139), and 45.7% (64/140) of vitamin D deficiency being recorded in participants from the Northern Sector (NS), Middle Belt (MB), and Southern Sector (SS), respectively. However, there were no significant differences in the proportions of vitamin D deficiency across various geographical sectors. The median 25-hydroxyvitamin D serum levels were compared among geographical areas (NS, MB, and SS) and there were no significant differences ( P = 0.275 ) after adjusting for confounding factors. 25-Hydroxyvitamin D correlated positively with corrected ionized calcium (rs = 0.622, P ≤ 0.001 ) and phosphorus (rs = 0.299, P ≤ 0.001 ) and negatively correlated with SBP (rs = −0.092, P = 0.039 ), vitamin D binding protein (VDBP) (rs = −0.421, P ≤ 0.001 ), intact parathyroid hormone (iPTH) (rs = −0.0568, rs ≤ 0.001), IFN-gamma (rs = −0.684, P ≤ 0.001 ), and TNF-alpha (rs = −0.600, P ≤ 0.001 ). After adjusting for possible confounders, not having knowledge about vitamin D foods, taking fewer vitamin D foods, and higher levels of IF-γ and IL-10 were associated with a higher risk of having vitamin D deficiency. Conclusion. The prevalence of 25-hydroxyvitamin D deficiency is high among the general adult population in Ghana despite the abundance of sunlight. Increasing knowledge on vitamin D diet coupled with a daily intake of vitamin D dietary supplements is likely to reduce the risk of developing 25-hydroxyvitamin D deficiency.

The impact of lifestyle factors on serum 25-hydroxyvitamin D levels: a cross-sectional study in Japanese women aged 19–25 years

2009 ◽  
Vol 27 (6) ◽  
pp. 682-688 ◽  
Author(s):  
Hiroaki Ohta ◽  
Tatsuhiko Kuroda ◽  
Yoshiko Onoe ◽  
Seiya Orito ◽  
Mami Ohara ◽  
...  
Keyword(s):  
Cross Sectional Study ◽  
Lifestyle Factors ◽  
Japanese Women ◽  
Sectional Study ◽  
Cross Sectional ◽  
Hydroxyvitamin D ◽  
25 Hydroxyvitamin D ◽  
The Impact

Deficiency of 25-hydroxyvitamin D in male HIV-positive patients: A descriptive cross-sectional study

2010 ◽  
Vol 42 (4) ◽  
pp. 306-310 ◽  
Author(s):  
Ulrich Christian Bang ◽  
Shakil A. Shakar ◽  
Mette Friberg Hitz ◽  
Mette Syberg Jespersen ◽  
Ove Andersen ◽  
...  
Keyword(s):  
Cross Sectional Study ◽  
Hiv Positive ◽  
Sectional Study ◽  
Cross Sectional ◽  
Hydroxyvitamin D ◽  
25 Hydroxyvitamin D

scholarly journals A Cross-Sectional Study of the Association between Circulating 25-Hydroxyvitamin D Levels and Predicted Operative Mortality of Patients with Cardiovascular Disease

2012 ◽  
Vol 58 (5) ◽  
pp. 327-332 ◽  
Author(s):  
Yusuke TSUTSUMI ◽  
Masamitsu SANUI ◽  
Akira SHIMOJIMA ◽  
Haruhiko ISHIOKA ◽  
Mitsuyoshi URASHIMA
Keyword(s):  
Cardiovascular Disease ◽  
Operative Mortality ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
Hydroxyvitamin D ◽  
25 Hydroxyvitamin D

The Relationship Between the Level of Serum 25-Hydroxyvitamin D and Renal Function in Patients Without Chronic Kidney Disease: A Cross-Sectional Study

2015 ◽  
Vol 25 (2) ◽  
pp. 88-96 ◽  
Author(s):  
Young Jin Tak ◽  
Jeong Gyu Lee ◽  
Sang Heon Song ◽  
Yun Jin Kim ◽  
Sangyeoup Lee ◽  
...  
Keyword(s):  
Chronic Kidney Disease ◽  
Renal Function ◽  
Kidney Disease ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
Hydroxyvitamin D ◽  
25 Hydroxyvitamin D ◽  
The Relationship
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