scholarly journals Bone Metabolism In Patients With Type 1 Neurofibromatosis: Key Role of Sun Exposure and Physical Activity

2021 ◽  
Author(s):  
Ursula Pia Ferrara ◽  
Cristina Tortora ◽  
Carmen Rosano BD ◽  
Antonia Assunto BD ◽  
Alessandro Rossi ◽  
...  
Keyword(s):  
Physical Activity ◽  
Vitamin D ◽  
Bone Metabolism ◽  
Bone Mineral ◽  
Linear Regression Analysis ◽  
Serum Vitamin ◽  
Sun Exposure ◽  
Mineral Density ◽  
Vitamin D Levels ◽  
Cholecalciferol Supplementation

Abstract Bone metabolism has been rarely investigated in children affected by Neurofibromatosis (NF1). Aim of the present study was to assess bone mineral metabolism in children and adults NF1 patients, to determine the relevant factors potentially involved in the development of reduced bone mineral density (BMD), and provide possible therapeutic intervention in NF1 patients. 114 NF1 patients and sex and age matched controls were enrolled into the study. Clinical and biochemical factors reflecting bone metabolism were evaluated. Factors potentially affecting BMD were also investigated including: physical activity, sun exposure, vitamin D intake. Whenever the presence of vitamin D deficiency was recorded, cholecalciferol supplementation was started and BMD data obtained during supplementation were compared with previous ones. NF1 patients showed lower Z-scores at Dual-Energy X-ray Absorptiometry (DXA) than controls. Physical activity was significantly reduced in NF1 patients than in controls. Sun exposure was significantly lower in NF1 compared to control subjects. At linear regression analysis vitamin D was the most predictive factor of reduced BMD (p = 0.0001). Cholecalciferol supplementation significantly increased BMD z.score (p = 0.000). We speculated that a combination of different factors, including reduced sun exposure, possibly associated with reduced serum vitamin D levels, and poor physical activity, concur to the impaired bone status in NF1 patients. We also demonstrated that treatment with vitamin D can be effective in improving BMD in NF1 patients, including children. In conclusion, the findings of the current study are expected to have important implications for the follow-up and prevention of osteopenia/osteoporosis in this common genetic disease.

scholarly journals Association Between Vitamin D and Resistin in Postmenopausal Females With Altered Bone Health

2021 ◽  
Vol 11 ◽  
Author(s):  
Sundus Tariq ◽  
Saba Tariq ◽  
Saba Khaliq ◽  
Mukhtiar Baig ◽  
Manal Abdulaziz Murad ◽  
...  
Keyword(s):  
Bone Mineral Density ◽  
Vitamin D ◽  
Bone Metabolism ◽  
Bone Mineral ◽  
Serum Vitamin ◽  
Significant Negative Correlation ◽  
Enzyme Linked Immunosorbent Assay ◽  
Mineral Density ◽  
Serum Vitamin D ◽  
Vitamin D Levels

BackgroundResistin is a relatively novel adipokine that has a role in bone remodeling and may regulate bone mineral density (BMD). Vitamin D and adipokines have a dynamic role in the body’s various metabolic processes, including bone metabolism, and may alter bone metabolism in relation to each other. This study aimed to investigate the association between vitamin D and serum resistin levels in postmenopausal non-osteoporotic and osteoporotic females.MethodsThis correlational analytical study was conducted on 161 postmenopausal females, divided into two groups, non-osteoporotic and osteoporotic, between 50–70 years. Bone mineral density (BMD) was assessed by dual-energy X-ray absorptiometry (DXA) scan. Serum resistin and vitamin D levels were analyzed by enzyme-linked immunosorbent assay (ELISA) method. Serum calcium, phosphate, and alkaline phosphatase with spectrophotometry. A correlation was checked using spearman’s rho correlation coefficient, and multivariate stepwise regression analysis was used to predict serum resistin levels.ResultsPostmenopausal females (n=161) having sufficient, insufficient and deficient levels of vitamin D were 87 (54.0%), 64 (39.8%), and 10 (6.2%), respectively. Lumbar spine BMD (p < 0.001), total hip BMD (p < 0.001), and serum resistin levels (p < 0.001) were significantly different between the two groups. There was a significant negative correlation between serum resistin and vitamin D in postmenopausal females (rho = -0.182, p = 0.021) and osteoporotic group (rho = -0.253, p = 0.019) but non-significant in non-osteoporotic group (rho = -0.077, p = 0.509). Serum vitamin D was found to be independent predictor of serum resistin levels, accounting for only 3% variance.ConclusionSerum vitamin D levels were low while serum resistin levels were high in postmenopausal osteoporotic females and vitamin D is a negative predictor of serum resistin levels.

Bone mineral density and its influencing factors in children with idiopathic nephrotic syndrome: a prospective observational study

2019 ◽  
Vol 49 (4) ◽  
pp. 292-298
Author(s):  
Indar K Sharawat ◽  
Lesa Dawman ◽  
Merabhai V Kumkhaniya ◽  
Kusum Devpura ◽  
Amarjeet Mehta
Keyword(s):  
Bone Mineral Density ◽  
Vitamin D ◽  
Nephrotic Syndrome ◽  
Bone Mineral ◽  
Idiopathic Nephrotic Syndrome ◽  
Serum Vitamin ◽  
Z Score ◽  
Mineral Density ◽  
Serum Vitamin D ◽  
Vitamin D Levels

Glucocorticoids are first-line therapy for children with idiopathic nephrotic syndrome (INS). These children are at risk of deranged bone metabolism and low bone mineral density (BMD). We studied 60 children with INS and divided them into two groups. Group 1 included 21 children (initial and infrequent relapsing) and group 2 included 39 children (frequent relapsing, steroid dependent and steroid resistant). Dual-energy X-ray absorptiometry of the lumbar spine was performed to assess BMD. Mean BMD Z-score was compared in both groups; this correlated significantly on univariate analysis with cumulative steroid dose, serum vitamin D levels and calcium supplementation. However, on multivariate analysis, serum vitamin D level was the only factor significantly predictive of low z-score.

scholarly journals STUDY OF BONE MINERAL DENSITY AND SERUM VITAMIN D LEVELS IN HEALTHY POSTMENOPAUSAL WOMEN

2016 ◽  
Vol 3 (64) ◽  
pp. 3515-3519
Author(s):  
Selvapandian Kirubaharan S ◽  
Arshiya Begum ◽  
Priya Anbarasan ◽  
Latha Jeyasubramanian ◽  
Santhi Natesan ◽  
...  
Keyword(s):  
Bone Mineral Density ◽  
Vitamin D ◽  
Postmenopausal Women ◽  
Bone Mineral ◽  
Serum Vitamin ◽  
Mineral Density ◽  
Serum Vitamin D ◽  
Vitamin D Levels

scholarly journals Levetiracetam monotherapy effect on serum calcium and serum vitamin D in patient of epilepsy

2017 ◽  
Vol 5 (2) ◽  
pp. 503 ◽  
Author(s):  
Anubha Garg ◽  
Surekha Dabla ◽  
Sandeep Nagenhalli ◽  
Sanjay Fotedar
Keyword(s):  
Bone Mineral Density ◽  
Vitamin D ◽  
Bone Mineral ◽  
Serum Calcium ◽  
Serum Vitamin ◽  
Total Leukocyte Count ◽  
Mineral Density ◽  
Serum Vitamin D ◽  
Vitamin D Levels ◽  
One Year

Background: Objective of the study was to determine the Levetiracetam monotherapy effect on serum calcium and serum vitamin D levels in tertiary care hospital in Haryana, India.Methods: A total of 110 patients with epilepsy, were enrolled to the study for one year between April 2013 to August 2014. All male patients aged 15-60 years and premenopausal females with epilepsy were included in the study. The study was a interventional prospective study design. The antiepileptic drug levetiracetam was administered starting from a dose of 20 mg/kg and dose was titrated according to the clinical response. During the follow up period, the subjects were asked about the seizure frequency and other side effects. The patients were be subjected to questionnaires based proforma. Baseline investigations, Hemogram, renal and liver function tests, calcium, phosphate, vitamin D and bone mineral density and T scores were noted. All investigations were repeated after one year of levetiracetam monotherapy.Results: The mean age of onset of seizures in the study group was 23.22±6.62 years. 58% (n=29) were seizure free after 1 year of levetiracetam monotherapy, 28% patients had adequate control and 14% patients had poor control of their seizure episodes. There was an insignificant change in Hemoglobin, total leukocyte count, platelet count, renal parameters and Liver enzymes from baseline over a year of levetiracetam therapy. Serum calcium levels increased insignificantly from baseline levels of 9.68±0.59 mg/dl to 9.72±0.56mg/dl. Vitamin D levels increased from baseline of 39.35±14.91ng/ml to 39.84±14.07 ng/ml. Bone mineral density increased insignificantly from baseline of 0.92±0.13 g/cm2 to 0.93±0.13 g/cm2.Conclusions: Present study has shown an overall beneficial effect on serum calcium, Vitamin D level, bone mineral density and T scores on DEXA scan.

scholarly journals Niveles de vitamina D en pacientes con osteoporosis en la ciudad de Neiva, Huila, Colombia

2017 ◽  
Vol 2 (3) ◽  
pp. 44-50
Author(s):  
Alejandro Pinzón Tovar ◽  
Nelson Vásquez ◽  
Carlos Celemin
Keyword(s):  
Bone Mineral Density ◽  
Vitamin D ◽  
Bone Mineral ◽  
Odds Ratio ◽  
Sun Exposure ◽  
University Hospital ◽  
Bivariate Analysis ◽  
Mineral Density ◽  
Vitamina D ◽  
Vitamin D Levels

Objetivos: Determinar la prevalencia de los niveles bajos de vitamina D en pacientes con diagnóstico de osteoporosis por densitometría ósea en la ciudad de Neiva, Huila, Colombia.Materiales y métodos: Se incluyeron pacientes mayores de 50 años, durante el periodo comprendido entre el 01 de enero de 2011 hasta el 31 de diciembre de 2011, con diagnóstico de osteoporosis por densitometría y reporte de 25 OH hidroxivitamina D medida por quimioluminiscencia que consultaron al hospital universitario de la ciudad de Neiva. Se establecieron medidas de posible asociación entre variables cuantitativas (Odds Ratio) y se planteó un modelo de regresión lineal en el cual se determinó la variable independiente que mejor predice el resultado de la variable dependiente, para así poder observar la correlación existente. El análisis estadístico se realizó bajo el paquete SPSS versión 19.Resultados: La hipovitaminosis D es un trastorno muy frecuente en la población estudiada (89%) y en el 55% de los casos se acompaña de hiperparatiroidismo secundario. Se encontró una prevalencia de niveles de deficiencia del 35,5% (n= 20), de insuficiencia del 53,5% (n= 30) y óptimos del 11% (n= 6). Al realizar un análisis bivariado de la densidad mineral ósea (DMO) y los niveles de vitamina D, se observó que la DMO descendía simultáneamente con la caída en los niveles séricos de vitamina D. Esta asociación fue estadísticamente significativa a nivel de la columna lumbar p= 0,0063.Conclusiones: La insuficiencia y la deficiencia de vitamina D son muy frecuentes aun en zonas donde la exposición solar es diaria durante todo el año, lo que hace necesario realizar su determinación en todos los pacientes con osteoporosis.Abstract Objective: Determine the prevalence of vitamin D levels in patients diagnosed by bone densitometry for osteoporosis inNeiva, Huila, Colombia.Material and methods: Patients older than 50 years were included during the period from January 1, 2011 until December 31, 2011 , with a diagnosis of osteoporosis by densitometry and reporting of 25 -OH vitamin D by chemiluminescence, who attended the university hospital Neiva. Measures possible association between qualitative variables (Odds Ratio) is established and a linear regression model in which the independent variable that best predicts the outcome of the dependent variable, and observe the correlation was determined. Statistical analysis was performed on SPSS version 19 package.Results: Hypovitaminosis D is a very common disorder in the study population (89%) and in 55% of cases is associated with secondary hyperparathyroidism. Prevalence of deficiency levels of 35.5% (n = 20), insufficiency of 53.5% (n = 30) and optimal11% ( n = 6 ) were found. When performing a bivariate analysis of the levels of bone mineral density (BMD) and vitamin D levels, we found that bone mineral density down simultaneously with the fall in serum levels of vitamin D. This association was statistically significant at the level of lumbar spine p = 0.0063. Conclusion: Insufficiency and deficiency of vitamin D is very common even in areas where sun exposure is daily throughout the year, making it necessary to perform testing in all patients with osteoporosis.

scholarly journals Assessment of Bone Metabolism and Bone Mineral Density in Children with Helicobacter pylori Infection

2020 ◽  
Author(s):  
Nafiye Urgancı ◽  
Derya Kalyoncu
Keyword(s):  
Bone Mineral Density ◽  
Vitamin D ◽  
Helicobacter Pylori ◽  
Bone Metabolism ◽  
Bone Mineral ◽  
Biochemical Parameters ◽  
Mineral Density ◽  
Vitamin D Levels ◽  
Significant Difference ◽  
H Pylori

Objective: Gastrointestinal disorders may have negative impact on bone metabolism. The aim of the study was to evaluate bone metabolism and bone mineral density in children with Helicobacter pylori (H. pylori) infection. Method: A total of 100 children (mean age: 13.69±2.44 years, M/F: 0.66) with chronic gastritis were divided into two groups according to presence of H. pylori infection and were tested for biochemical parameters such as calcium, phosphorus, magnesium, alkaline phosphatase, parathyroid hormone and vitamin D. Bone mineral density was measured at lumbar spine in all of the patients by dual-energy x-ray absorptiometry (DXA). Results: 48 of 72 patients with H. pylori and 16 of 28 patients without H. pylori had low vitamin D levels (p=0.35). The other biochemical parameters were within normal limits in both groups. Bone mineral density was measured -0.16±2.25 g/cm2 in H. pylori-positive patients and -0.08±2.62 g/cm2 in H. pylori-negative patients (p=0.87). Only 2 patients with H. pylori and 1 without H. pylori had BMD z scores below -2.5 (p=1.00). Conclusion: No significant difference was observed in biochemical parameters of bone metabolism and bone mineral density between H.pylori-positive and H. pylori-negative children.

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