Abstract P168: Vitamin D Status does not influence Bone Density in Africans

Circulation ◽  
2014 ◽  
Vol 129 (suppl_1) ◽  
Author(s):  
Caroline K Thoreson ◽  
Michelle Y O'Connor ◽  
Madia Ricks ◽  
Stephanie T Chung ◽  
James C Reynolds ◽  
...  
Keyword(s):  
Vitamin D ◽  
Bone Density ◽  
The United States ◽  
Whole Body ◽  
Institute Of Medicine ◽  
Mineral Density ◽  
Vitamin D Levels ◽  
Age Range ◽  
Dxa Scans ◽  
Relationship Of

Without regard to race, the Institute of Medicine states that to protect bone health vitamin D, measured as 25(OH)D, should be >20 ng/mL while levels of 12-19 ng/mL are inadequate and levels of <12 ng/mL are deficient. However, even when 25(OH)D levels are low, bone mineral density (BMD) is not compromised in African-Americans. The relationship of 25(OH)D levels to BMD in Africans is unknown. Therefore 78 African immigrants to the United States (77% male, median age 35y, age range 22-63y (95% CI: 36, 40)) had 25(OH)D levels and dual-energy X-ray absorptiometry (DXA) scans. Distribution of 25(OH)D levels by quartile was determined (Fig. 1). The distribution of whole body BMD across quartiles of 25(OH)D was assessed (Fig. 2). Median 25(0H)D levels was 21 ng/mL (95% CI: 20, 23) with 47% having 25(OH)D<20 ng/mL and 8% having 25(OH)D <12 ng/mL. BMD did not change across quartiles of 25(OH)D (Fig. 2). Spearman correlation between BMD and 25(OH)D was r =0.1, P=0.5. As there was no relationship between vitamin D levels and BMD, low 25(OH)D levels are not a predictor of low bone density in Africans.

scholarly journals MON-387 Association Between Vitamin D Level and Bone Mineral Density in Korean Adolescents

2020 ◽  
Vol 4 (Supplement_1) ◽  
Author(s):  
Kyungchul Song ◽  
Han saem CHOI ◽  
Junghwan Suh ◽  
Ah Reum Kwon ◽  
Hyun-wook Chae ◽  
...  
Keyword(s):  
Physical Activity ◽  
Vitamin D ◽  
Lean Mass ◽  
Calcium Intake ◽  
Whole Body ◽  
Vitamin D Status ◽  
Mineral Density ◽  
Femur Neck ◽  
Vitamin D Levels ◽  
Z Scores

Abstract Introduction Fractures are common in pediatric population, and lower bone density increases the risk of fracture. Most bone acquisition happens during youth, so juvenile bone mineral density (BMD) assessment is important. There are many factors associated with low BMD, including vitamin D status, calcium intake, low body weight, and physical activity. Among these, our investigation focused on the association of BMD with vitamin D in adolescents. Methods This study investigated data of 1,063 adolescents aged 12-18 years from the fifth and sixth Korea National Health and Nutritional Examination Survey (2009-2011). The association of various factors (vitamin D level, calcium intake, body mass index (BMI), lean mass, fat mass, and physical activity) with BMD Z-scores in whole body, lumbar spine, total femur, and femur neck were analyzed. We defined vitamin D deficiency (≤ 12 ng/mL), vitamin D insufficiency (12-20 ng/mL), and sufficiency (&gt; 20ng/mL) according to the 25-hydroxyvitamin D (25-OHD) level. We analyzed association between BMD and vitamin D levels after adjusting for other factors. Results The mean 25-OHD level of subjects was low (16.28 ng/ml). Of all subjects, 21.9% were vitamin D deficient, and 58.5% were vitamin D insufficient. Among the vitamin D groups, the vitamin D sufficient group had significantly higher BMD Z-scores than the vitamin D deficient group in whole body, lumbar spine, and femur neck. The sufficient vitamin D group had higher BMD Z-score than the vitamin D insufficient group in femur neck, and the vitamin D insufficient group had higher BMD Z-score than the vitamin D deficient group in whole body. Among various factors, vitamin D status, calcium intake, BMI, lean mass, fat mass, and physical activity were positively associated with BMD Z-scores. In particular, lean mass was the strongest independent factor. Vitamin D levels were positively associated with the BMD Z-scores even after adjusting for other factors. Conclusions Vitamin D deficiency and insufficiency were common among adolescents. This study suggested that vitamin D level was positively associated with BMD, and that sufficient vitamin D level was needed to prevent low BMD. Vitamin D status is an important factor of BMD in adolescents.

scholarly journals Relationship of vitamin D, BMI and BMD in age and gender linked population

2018 ◽  
Vol 4 (3) ◽  
pp. 406
Author(s):  
Ritwik Ganguli ◽  
Priyanka Pahari
Keyword(s):  
Vitamin D ◽  
Vitamin D Insufficiency ◽  
Healthy Individuals ◽  
Mineral Density ◽  
Hydroxyvitamin D ◽  
Vitamin D Levels ◽  
25 Hydroxyvitamin D ◽  
And Gender ◽  
Relationship Of ◽  
The Relationship

<p class="abstract"><strong>Background:</strong> Vitamin D insufficiency prevalence has been related to low bone mineral density (BMD). However, controversial results have been reported for the relationship between serum 25-hydroxyvitamin D [25(OH)D] levels and BMD. This study was done to investigate whether serum 25(OH)D levels were associated with BMD in different age group and sex link population.</p><p class="abstract"><strong>Methods:</strong> This study involved, aged 40-70 yr, who is consecutively selected from KPCMCH, BMD camp. BMD was measured at the lumbar spine and femoral neck. The correlation between serum 25(OH)D levels and BMD was investigated.<strong></strong></p><p class="abstract"><strong>Results:</strong> Vitamin D levels for healthy and patients individuals at hospital. The age of 40 healthy subjects ranged from 40 to 70 years with the average of 55.30±10.30 years and body mass index (BMI) ranged from 18 to 37 kg/m<sup>2</sup>, with the of average of 28.90±5.20 kg/m<sup>2</sup>. Comparison between healthy and patients based on BMI and vitamin D level for the overweight BMI healthy individuals was 29.78±9.40 ng/ml, and that of hyperlipidemic patients was 24.47±8.78 ng/ml.</p><p class="abstract"><strong>Conclusions:</strong> In this study, there is significant different between healthy and patients group in vitamin D<sub>3</sub>level.BMD significantly decreased in patients group more elderly.</p>

scholarly journals Long-term iron polymaltose infusions associated with hypophosphataemic osteomalacia: a report of two cases and review of the literature

2016 ◽  
Vol 8 (1-2) ◽  
pp. 14-19 ◽  
Author(s):  
Ramy H. Bishay ◽  
Kirtan Ganda ◽  
Markus J. Seibel
Keyword(s):  
Vitamin D ◽  
Fibroblast Growth Factor 23 ◽  
Normal Serum ◽  
Whole Body ◽  
Insufficiency Fractures ◽  
Mineral Density ◽  
Vitamin D Levels ◽  
Parenteral Iron ◽  
Hypophosphataemic Osteomalacia

Iron-induced hypophosphataemic osteomalacia remains under-recognized as a potential complication of parenteral iron therapy. We here report two cases of symptomatic hypophosphataemic osteomalacia with multiple insufficiency fractures in the context of chronic gastrointestinal blood loss, necessitating monthly iron polymaltose infusions over prolonged periods of time. Respective blood tests revealed severe hypophosphataemia [0.29 and 0.43; normal range (NR) 0.8–1.5 mmol/l] in the presence of normal serum calcium and 25-hydroxy vitamin D levels. Urinary fractional phosphate excretion was elevated (16% and 24%; NR < 5%) and the tubular maximum phosphate reabsorption was reduced, consistent with renal phosphate wasting. Serum fibroblast growth factor 23 (FGF23) obtained in one patient was significantly elevated at 285 pg/ml (NR < 54 pg/ml). Bone mineral density was significantly reduced and whole-body bone scans revealed metabolic bone disease and multiple insufficiency fractures consistent with osteomalacia. Cessation of iron infusions resulted in clinical and biochemical improvement within 2 months in one patient whereas the second patient required phosphate and calcitriol supplementation to improve symptomatically. Iron-induced hypophosphataemic osteomalacia is thought to be due to reduced degradation of FGF23, resulting in phosphaturia and reduced synthesis of 1,25-dihydroxy vitamin D. Monitoring of patients on long-term parenteral iron is recommended to avoid clinically serious adverse effects.

scholarly journals Comparison of the effect of vitamin D on osteoporosis and osteoporotic patients with healthy individuals referred to the Bone Density Measurement Center

2019 ◽  
Vol 10 (1) ◽  
pp. 44-50 ◽  
Author(s):  
Banafsheh Shahnazari ◽  
Jamileh Moghimi ◽  
Majid Foroutan ◽  
Majid Mirmohammadkhani ◽  
Amir Ghorbani
Keyword(s):  
Vitamin D ◽  
Bone Density ◽  
Vitamin D Deficiency ◽  
Serum Vitamin ◽  
Control Group ◽  
Bone Density Measurement ◽  
Mineral Density ◽  
Serum Vitamin D ◽  
Vitamin D Levels ◽  
The Impact

AbstractObjectiveOsteoporosis is the most common metabolic disease of the bones. Osteoporosis reduces bone density, predisposes a person to fractures, and imposes high costs on societies. Osteoporosis develops from a variety of causes, one of the most significant is vitamin D deficiency. This study investigates the impact of vitamin D on osteoporosis.Materials and MethodsIn this clinical trial, 400 patients referred to the Bone Density Clinic of Kowsar Hospital in Semnan were selected by convenience sampling method. Bone densitometry tests were carried out using DEXA (x-ray absorptiometry) and serum vitamin D levels were measured by the ELISA method. Subjects with vitamin D deficiency were treated for 8 weeks with (50,000 Vitamin D units per week. At the end of the treatment period, all subjects were evaluated for bone density and the results of both groups were compared.Results13% of subjects had osteoporosis and 14.2% had osteopenia. 19% of subjects had vitamin D deficiency, 38.8% had insufficient levels of vitamin D, and 42.3% had sufficient vitamin D levels. The level of vitamin D in patients with osteoporosis (5.50 ± 5.5 ng/ml) was less than those with osteopenia (7.83 ± 4.8 ng/ml) and those with normal bone mineral density (23.88 ± 18.42 ng/ml) (P <0.001). The prevalence of osteoporosis in the intervention group after intervention with vitamin D was significantly lower than the control group (32.3 versus 67.7 and P <0.001).ConclusionThe prevalence of serum vitamin D deficiency in osteopenic and osteoporotic individuals was higher than in normal subjects, with a significant relationship between age and sex. Thus, treatment with vitamin D improves bone density indices.

scholarly journals A Study on Vitamin D Levels in Patients Attended at OPD of A Tertiary Care Hospital of Chattogram

2020 ◽  
Vol 18 (2) ◽  
pp. 37-40
Author(s):  
Shaheda Ahmed ◽  
Md Jalal Uddin ◽  
AYM Masud Reza Khan
Keyword(s):  
Vitamin D ◽  
Tertiary Care ◽  
Serum Vitamin ◽  
Hypovitaminosis D ◽  
Whole Body ◽  
Care Hospital ◽  
Mineral Density ◽  
Female Ratio ◽  
Serum Vitamin D ◽  
Vitamin D Levels

Background: Vitamin D is a fat soluble vitamin, having important role in calcium and phosphorous metabolism. Many researches support the role of vitamin D against cancer, cardiovascular diseases, fractures and falls, cognitive disorders, Parkinsonism, auto-immune diseases, respiratory ailments and depression. Thus Vitamin D Deficiency (VDD) is an alarming public problem. Purpose of this study was to measure the frequency of hypovitaminosis D among different age and sex group of Chattogram, Bangladesh. Materials and methods: A cross sectional hospital based observational study was conducted over a period of six months from February 2018 to July 2018 at a leading diagnostic complex and hospital of Chattogram. A total of 243 patients were included in the study. Number of male and female respondents were 86 and 157 respectively. Age range was 15-85 years. Blood samples were collected aseptically after an oral informed consent. Serum vitamin D levels were estimated using standard laboratory technique (Chemiluminescent microparticle immunoassay method). Results: Among 243 respondents, male female ratio was 1:1.83, mean age was 47± 16.3 years, prevalence of hypovitaminosis was 82%, among male hypovitaminosis was found in 78% cases, whereas among female it was a bit higher with 84%. Sex difference was strongly significant with p value of < 0.01. Conclusion: The present study has limitation with estimation of only vitamin D, in absence of valuable indicators of bone health like serum calcium, bone mineral density and parathyroid hormone. Factors like, less outdoor activities, obesity or covering whole body (Abaiya or burkah) in case of Muslim women, which could be responsible for more hypovitaminosis in case of female was not noticed. But it was very much clear that 45-60 years age group was the most vulnerable with highest level of hypovitaminosis-D in both sexes. Chatt Maa Shi Hosp Med Coll J; Vol.18 (2); July 2019; Page 37-40

scholarly journals SUN-392 Bone Mineral Density and Body Mass Index in Men with Cystic Fibrosis

2020 ◽  
Vol 4 (Supplement_1) ◽  
Author(s):  
Abhinaya Jawahar ◽  
Sathya S Krishnasamy ◽  
Allan Ramirez ◽  
Adrian O’Hagan ◽  
Stephen J Winters
Keyword(s):  
Cystic Fibrosis ◽  
Vitamin D ◽  
Body Weight ◽  
Bone Density ◽  
Academic Medical Center ◽  
Delayed Puberty ◽  
Mineral Density ◽  
Adult Men ◽  
Vitamin D Levels ◽  
The Mean

Abstract Osteoporosis is an important endocrine complication of cystic fibrosis (CF). Low bone mass in CF patients has multiple contributing causes including vitamin D deficiency, calcium malabsorption, pulmonary infection and cytokine production, malnutrition, a sedentary life style, cumulative steroid dose, delayed puberty, and hypogonadism. The objective of this study was to examine the relationship between BMI and bone density of the hip and spine in adult men with CF. We conducted a retrospective chart review of adult men with CF receiving care at an academic medical center. Medical records of 43 men ages 19-60 (32.1±9.8) years were reviewed. 8 men with lung transplant, or receiving chronic glucocorticoid or androgen treatment were excluded. One subject was excluded as his BMI was &gt;3SD above the mean. BMD was measured by dual-energy x-ray absorptiometry at the lumbar spine (LS) and hip. The mean ± SD BMI of the study population was 24.10 ± 5.24 kg/m2, mean LS BMD was 0.96 ± 0.204 g/cm2 and mean hip BMD was 0.701 ± 0.382 g/cm2. Men were divided into three groups: normal BMD, osteopenia, or osteoporosis, based on current guidelines. 8 (24%) men were found to have normal bone density (Z=0.40±0.60), 19 (56%) had osteopenia (Z= -1.57±0.67) and 7 (20%) had osteoporosis (Z= -3.27±0.83). Of these 7, 6 had osteoporosis of the LS only, and one patient had osteoporosis of the hip; 5 were being treated with a bisphosphonate. The three groups of men were similar in age (P=0.93). 25OH-vitamin D levels were 22.6±4.4, 35.6±12.7 and 27.0±13.4 ng/mL, respectively (p=0.03). There was a significant (p=0.023) difference in BMI among these three groups (26.33±4.80 vs 23.25 ± 3.01 vs 20.96±3.64 kg/m2). BMI was strongly positively correlated with LS BMD (r = 0.54, P&lt;0.001) but not with BMD of the hip (r = 0.11, p=0.55). Moreover, LS BMD was highly predicted by body weight (r = 0.90, P&lt;0.0001) but not significantly by height (r = 0.26, p=0.16). These findings indicate that CF-related bone disease (CF-RBD) affecting the LS is common in adult men, and that body weight is a major determinant of LS BMD in men with CF. Possible mechanisms for this association include signaling pathways related to nutritional status and sex steroids.

Vitamin D Status and Its Correlation with Bone Mineral Density in Long Term Survivors After Childhood Hematopoietic Stem Cell Transplantation

Blood ◽  
2012 ◽  
Vol 120 (21) ◽  
pp. 4472-4472
Author(s):  
Amy Garee ◽  
Micah Skeens ◽  
Sasigarn Bowden ◽  
Manmohan Kamboj ◽  
Sally Wildman ◽  
...  
Keyword(s):  
Vitamin D ◽  
Whole Body ◽  
P Value ◽  
Vitamin D Status ◽  
Mineral Density ◽  
Hematopoietic Stem ◽  
Vitamin D Levels ◽  
Z Scores ◽  
Long Term Survivors

Abstract Abstract 4472 Introduction: Children undergoing hematopoietic stem cell transplantation (HSCT) are at risk of developing vitamin D deficiency (VDD). However, data on vitamin D status and its correlation with bone mineral density (BMD) in the long term survivors after childhood HSCT is limited. The aim of this study was to determine the prevalence of VDD among long term survivors after HSCT in childhood, and to evaluate the correlations between vitamin D and BMD. Methods: A retrospective study was carried out in patients seen in Long Term follow-up Clinic (LTFC) at our institution from January 2011 to July 2012. Vitamin D deficiency (VDD) and insufficiency (VDI) were defined as serum 25-hydroxyvitamin D (25-OHD) <15 ng/mL and 15–30 ng/mL, respectively. BMD was measured using dual-energy radiograph absorptiometry (Hologic Delphi). Lumbar, total body, and hip BMD Z scores were determined using manufacturer's normative data based on age. Spearman's correlation was performed to assess correlation between serum 25-OHD levels and different BMD variables. Results: Ninety eight patients underwent 103 HSCTs between 1990 and 2010. Fifty two (53%) patients were > 5 years out of transplant. A total of 114 vitamin D levels were recorded for the 98 patients, the median 25-OHD level was 26 (range 7 – 68 ng/mL). In 68/114 (60%) observations the 25-OHD levels were less than < 30ng/mL. Of these, 10 (9%) patients had VDD (levels < 15ng/mL, while 58 (51%) had VDI. There were no significant correlations between 25-OHD levels and age at HSCT, gender, underlying diagnosis, type of transplant, or development of acute or chronic GVHD (Table 2). There was a trend towards lower 25-OHD levels after non-TBI based conditioning regimen (p = 0.047). BMD was performed in 83 patients (85%). Low BMD was found in nearly one-third to half of patients tested: 29%, 54%, and 33% of the patients had BMDlumbar, BMDhip and BMDWB Z scores of < −1.0, respectively, while 5%, 9% and 5% of the patients had BMDlumbar, BMDhip and BMDWB Z scores < −2.5, respectively. The median Z scores of the BMDlumbar, BMDhip, and the BMDWB were −0.3 (range −4.2 to 2.4), −1.1 (range −3.3 to 1.9), and −0.4 (range −5.4 to 2.7) respectively. In patients with BMD < −2.5 and < −1.0, the corresponding median 25-OHD was 26 (range 7 – 62 ng/mL) and there was no significant association. Spearman correlation between 25-OHD D level, BMDWB and BMDlumbar showed a correlation coefficient of −0.24 (p value: 0.0409) and −0.22 (p value: 0.0546) respectively. There was no correlation between normal vitamin D levels, VDI and VDD with BMD of the hip, lumbar spine and whole body. Discussion: Low 25-OHD (<30ng/mL) was common (60%) in long term survivors after HSCT during childhood. Similar to other reports, VDD and VDI was seen in 9%, and 51% of the patients respectively. There was only a weak correlation of the 25-OHD levels with BMD of whole body and the lumbar spine, suggesting that factors other than hypovitaminosis D might have contributed to low BMD. There was a small trend of lower 25-OHD levels after non-TBI based conditioning. Disclosures: No relevant conflicts of interest to declare.

scholarly journals P114 Effect of vitamin D on parathyroid hormone, serum calcium and bone mineral density in patients with primary hyperparathyroidism being managed conservatively

Rheumatology ◽  
2021 ◽  
Vol 60 (Supplement_1) ◽  
Author(s):  
Mahrukh Khalid ◽  
Vismay Deshani ◽  
Khalid Jadoon
Keyword(s):  
Bone Mineral Density ◽  
Vitamin D ◽  
Parathyroid Hormone ◽  
Primary Hyperparathyroidism ◽  
Bone Mineral ◽  
Serum Calcium ◽  
Mineral Density ◽  
Neck Of Femur ◽  
Vitamin D Levels ◽  
Significant Difference

Abstract Background/Aims  Vitamin D deficiency is associated with more severe presentation of primary hyperparathyroidism (PTHP) with high parathyroid hormone (PTH) levels and reduced bone mineral density (BMD). We analyzed data to determine if vitamin D levels had any impact on PTH, serum calcium and BMD at diagnosis and 3 years, in patients being managed conservatively. Methods  Retrospective analysis of patients presenting with PHPT. Based on vitamin D level at diagnosis, patients were divided into two groups; vitamin D sufficient (≥ 50 nmol/L) and vitamin D insufficient (≤ 50 nmol/L). The two groups were compared for age, serum calcium and PTH levels at diagnosis and after mean follow up of 3 years. BMD at forearm and neck of femur (NOF) was only analyzed in the two groups at diagnosis, due to lack of 3 year’s data. Results  There were a total of 93 patients, 17 males, mean age 70; range 38-90. Mean vitamin D level was 73.39 nmol/L in sufficient group (n = 42) and 34.48 nmol/L in insufficient group (n = 40), (difference between means -38.91, 95% confidence interval -45.49 to -32.33, p &lt; 0.0001). There was no significant difference in age, serum calcium and PTH at the time of diagnosis. After three years, there was no significant difference in vitamin D levels between the two groups (mean vitamin D 72.17 nmol/L in sufficient group and 61.48 nmol/L in insufficient group). Despite rise in vitamin D level in insufficient group, no significant change was observed in this group in PTH and serum calcium levels. BMD was lower at both sites in vitamin D sufficient group and difference was statistically significant at NOF. Data were analyzed using unpaired t test and presented as mean ± SEM. Conclusion  50% of patients presenting with PHPT were vitamin D insufficient at diagnosis. Vitamin D was adequately replaced so that at 3 years there was no significant difference in vitamin D status in the two groups. Serum calcium and PTH were no different in the two groups at diagnosis and at three years, despite rise in vitamin D levels in the insufficient group. Interestingly, BMD was lower at forearm and neck of femur in those with sufficient vitamin D levels and the difference was statistically significant at neck of femur. Our data show that vitamin D insufficiency does not have any significant impact on PTH and calcium levels and that vitamin D replacement is safe in PHPT and does not impact serum calcium and PTH levels in the short term. Lower BMD in those with adequate vitamin D levels is difficult to explain and needs further research. Disclosure  M. Khalid: None. V. Deshani: None. K. Jadoon: None.

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