Serum vitamin D metabolites do not change in response to intravenous injection of thyrotropin releasing hormone (TRH) and growth hormone releasing factor (GHRF 1–44) in children

1988 ◽  
Vol 11 (1) ◽  
pp. 27-30 ◽  
Author(s):  
R. Rosskamp ◽  
S. Issa ◽  
W. Burmeister
Keyword(s):  
Growth Hormone ◽  
Vitamin D ◽  
Intravenous Injection ◽  
Serum Vitamin ◽  
Thyrotropin Releasing Hormone ◽  
Vitamin D Metabolites ◽  
Growth Hormone Releasing Factor ◽  
Releasing Hormone ◽  
Serum Vitamin D

scholarly journals Assessment of Vitamin D Metabolism in Patients with Cushing’s Disease in Response to 150,000 IU Cholecalciferol Treatment

Nutrients ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 4329
Author(s):  
Alexandra Povaliaeva ◽  
Viktor Bogdanov ◽  
Ekaterina Pigarova ◽  
Artem Zhukov ◽  
Larisa Dzeranova ◽  
...  
Keyword(s):  
Vitamin D ◽  
Cushing’S Disease ◽  
Serum Vitamin ◽  
Urinary Free Cortisol ◽  
Cushing's Disease ◽  
Control Group ◽  
Vitamin D Metabolites ◽  
Vitamin D Metabolism ◽  
Serum Vitamin D ◽  
Free Cortisol

In this study we aimed to assess vitamin D metabolism in patients with Cushing’s disease (CD) compared to healthy individuals in the setting of bolus cholecalciferol treatment. The study group included 30 adults with active CD and the control group included 30 apparently healthy adults with similar age, sex and BMI. All participants received a single dose (150,000 IU) of cholecalciferol aqueous solution orally. Laboratory assessments including serum vitamin D metabolites (25(OH)D3, 25(OH)D2, 1,25(OH)2D3, 3-epi-25(OH)D3 and 24,25(OH)2D3), free 25(OH)D, vitamin D-binding protein (DBP) and parathyroid hormone (PTH) as well as serum and urine biochemical parameters were performed before the intake and on Days 1, 3 and 7 after the administration. All data were analyzed with non-parametric statistics. Patients with CD had similar to healthy controls 25(OH)D3 levels (p > 0.05) and higher 25(OH)D3/24,25(OH)2D3 ratios (p < 0.05) throughout the study. They also had lower baseline free 25(OH)D levels (p < 0.05) despite similar DBP levels (p > 0.05) and lower albumin levels (p < 0.05); 24-h urinary free cortisol showed significant correlation with baseline 25(OH)D3/24,25(OH)2D3 ratio (r = 0.36, p < 0.05). The increase in 25(OH)D3 after cholecalciferol intake was similar in obese and non-obese states and lacked correlation with BMI (p > 0.05) among patients with CD, as opposed to the control group. Overall, patients with CD have a consistently lower 25(OH)D3/24,25(OH)2D3 ratio, which is indicative of a decrease in 24-hydroxylase activity. This altered activity of the principal vitamin D catabolism might influence the effectiveness of cholecalciferol treatment. The observed difference in baseline free 25(OH)D levels is not entirely clear and requires further study.

scholarly journals Intestinal Calcium Absorption and Serum Vitamin D Metabolites in Normal Subjects and Osteoporotic Patients

1979 ◽  
Vol 64 (3) ◽  
pp. 729-736 ◽  
Author(s):  
J. C. Gallagher ◽  
B. Lawrence Riggs ◽  
John Eisman ◽  
Alan Hamstra ◽  
Sara B. Arnaud ◽  
...  
Keyword(s):  
Vitamin D ◽  
Calcium Absorption ◽  
Serum Vitamin ◽  
Normal Subjects ◽  
Intestinal Calcium Absorption ◽  
Vitamin D Metabolites ◽  
Serum Vitamin D

Serum vitamin D metabolites in normal subjects after phototherapy

1984 ◽  
Vol 44 (8) ◽  
pp. 769-769
Author(s):  
Bent Staberg ◽  
C. Christiansen ◽  
Niels Rossing
Keyword(s):  
Vitamin D ◽  
Serum Vitamin ◽  
Normal Subjects ◽  
Vitamin D Metabolites ◽  
Serum Vitamin D

Prostate cancer and prediagnostic levels of serum vitamin D metabolites (Maryland, United States)

1995 ◽  
Vol 6 (3) ◽  
pp. 235-239 ◽  
Author(s):  
M. Miles Braun ◽  
Kathy J. Helzlsouer ◽  
Bruce W. Hollis ◽  
George W. Comstock
Keyword(s):  
Prostate Cancer ◽  
United States ◽  
Vitamin D ◽  
Serum Vitamin ◽  
Vitamin D Metabolites ◽  
Serum Vitamin D

scholarly journals Serum vitamin D metabolites and calcium absorption in normal young and elderly free-living women and in women living in nursing homes

1997 ◽  
Vol 65 (3) ◽  
pp. 790-797 ◽  
Author(s):  
H K Kinyamu ◽  
J C Gallagher ◽  
K E Balhorn ◽  
K M Petranick ◽  
K A Rafferty
Keyword(s):  
Vitamin D ◽  
Nursing Homes ◽  
Calcium Absorption ◽  
Serum Vitamin ◽  
Vitamin D Metabolites ◽  
Free Living ◽  
Serum Vitamin D

Serum vitamin D metabolites in very low birth weight infants with and without rickets and fractures

1989 ◽  
Vol 114 (6) ◽  
pp. 1017-1022 ◽  
Author(s):  
Winston W.K. Koo ◽  
Roberta Sherman ◽  
Paul Succop ◽  
Mona Ho ◽  
Donna Buckley ◽  
...  
Keyword(s):  
Vitamin D ◽  
Birth Weight ◽  
Low Birth Weight ◽  
Very Low Birth Weight ◽  
Serum Vitamin ◽  
Vitamin D Metabolites ◽  
Low Birth Weight Infants ◽  
Serum Vitamin D
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