scholarly journals Effect of vitamin D supplementation on serum 25-hydroxy vitamin D levels, joint pain, and fatigue in women starting adjuvant letrozole treatment for breast cancer

2009 ◽  
Vol 119 (1) ◽  
pp. 111-118 ◽  
Author(s):  
Qamar J. Khan ◽  
Pavan S. Reddy ◽  
Bruce F. Kimler ◽  
Priyanka Sharma ◽  
Susan E. Baxa ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Vitamin D ◽  
Joint Pain ◽  
Vitamin D Supplementation ◽  
Vitamin D Levels ◽  
Letrozole Treatment ◽  
25 Hydroxy Vitamin D

Demographic Characteristics, Risk Factors, and Presenting Features of Children with Symptomatic Nutritional Rickets: A French Series

2020 ◽  
Vol 93 (5) ◽  
pp. 304-312
Author(s):  
Claire Flot ◽  
Valérie Porquet-Bordes ◽  
Justine Bacchetta ◽  
Anya Rothenbuhler ◽  
Anne Lienhardt-Roussie ◽  
...  
Keyword(s):  
Risk Factors ◽  
Vitamin D ◽  
Pediatric Population ◽  
Vitamin D Supplementation ◽  
Demographic Characteristics ◽  
Total Serum ◽  
Nutritional Rickets ◽  
Total Serum Calcium ◽  
Vitamin D Levels ◽  
25 Hydroxy Vitamin D

<b><i>Aim:</i></b> To describe the demographic characteristics, risk factors, and presenting features of children with symptomatic nutritional rickets in France. <b><i>Methods:</i></b> This is a retrospective study of 38 children diagnosed with nutritional rickets from 1998 to 2019. <b><i>Results:</i></b> We observed a higher frequency of rickets in males (74 vs. 26%), in young children (median age at diagnosis: 23 months; 82% were younger than 5 years), and in children with a non-Caucasian ethnic background (89%). Most children were exclusively breastfed (78%) without adequate vitamin D supplementation (89%). The most common presentations were bowed legs (63%), hypocalcemic seizures (21%), and growth retardation (11%). Approximately half (62%) of the children were hypocalcemic. The children presenting with hypocalcemic seizures were significantly younger (0.8 vs. 2.2 years; <i>p</i> = 0.041) and had lower total serum calcium levels (1.44 vs. 2.17 mmol/L; <i>p</i> &#x3c; 0.0001), higher phosphatemia (1.43 vs. 1.23 mmol/L; <i>p</i> = 0.020), and lower 25-hydroxy vitamin D levels (3 vs. 7 ng/mL; <i>p</i> = 0.020) but similar parathyroid hormone levels (357 vs. 289 ng/mL; <i>p</i> = 0.940) compared to rickets cases who did not experience hypocalcemic seizures. A dilated cardiomyopathy was detected in 14% of the children who had undergone echocardiography. <b><i>Conclusion:</i></b> Nutritional rickets remains endemic in the pediatric population and its most severe forms can have life-threatening sequelae. Health practitioners need to be cognizant of these facts to raise awareness and screen high-risk populations.

scholarly journals High Prevalence of Vitamin D Deficiency Despite Supplementation in Premenopausal Women With Breast Cancer Undergoing Adjuvant Chemotherapy

2009 ◽  
Vol 27 (13) ◽  
pp. 2151-2156 ◽  
Author(s):  
Katherine D. Crew ◽  
Elizabeth Shane ◽  
Serge Cremers ◽  
Donald J. McMahon ◽  
Dinaz Irani ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Vitamin D ◽  
Black Women ◽  
Adjuvant Chemotherapy ◽  
Vitamin D Deficiency ◽  
White Women ◽  
Premenopausal Women ◽  
Vitamin D Supplementation ◽  
Mineral Density ◽  
Vitamin D Levels

Purpose Vitamin D deficiency is associated with increased breast cancer risk and decreased breast cancer survival. The purpose of this study was to determine the prevalence of vitamin D deficiency, as measured by serum 25-hydroxyvitamin D (25-OHD), in premenopausal women at initiation of adjuvant chemotherapy for breast cancer and after 1 year of vitamin D supplementation. Patients and Methods The study included 103 premenopausal women from the northeastern United States with stages I to III breast cancer who received adjuvant chemotherapy and participated in a 1-year zoledronate intervention trial. All patients were prescribed vitamin D3 (cholecalciferol) 400 IU and calcium carbonate 1,000 mg daily. At baseline and at 6 and 12 months, bone mineral density (BMD) measurements were obtained and blood was collected and analyzed in batches for serum 25-OHD. Vitamin D deficiency was defined as serum 25-OHD less than 20 ng/mL, insufficiency as 20 to 29 ng/mL, and sufficiency as 30 ng/mL or greater. Results At baseline, 74% of women were vitamin D deficient (median, 17 ng/mL). Vitamin D deficiency was slightly less common in white women (66%) compared with black (80%) and Hispanic (84%) women. After vitamin D supplementation for 1 year, less than 15% of white and Hispanic women, and no black women, achieved sufficient 25-OHD levels. Vitamin D levels did not correlate with baseline BMD and were not altered by chemotherapy or bisphosphonate use. Conclusion Vitamin D deficiency is highly prevalent in women with breast cancer. The current recommended dietary allowance of vitamin D is too low to increase serum 25-OHD greater than 30 ng/mL. Optimal dosing for bone health and, possibly, improved survival has yet to be determined.

scholarly journals Inflammatory activity and vitamin D levels in an MS population treated with rituximab

2019 ◽  
Vol 5 (1) ◽  
pp. 205521731982659 ◽  
Author(s):  
Johan Linden ◽  
Gabriel Granåsen ◽  
Jonatan Salzer ◽  
Anders Svenningsson ◽  
Peter Sundström
Keyword(s):  
Multiple Sclerosis ◽  
Vitamin D ◽  
Magnetic Resonance ◽  
Vitamin D Supplementation ◽  
Inflammatory Activity ◽  
T2 Lesions ◽  
Vitamin D Levels ◽  
25 Hydroxy Vitamin D ◽  
Multiple Sclerosis Patients

Background Most multiple sclerosis patients on disease-modifying treatment at Umeå University Hospital are treated with rituximab and the prevalence of vitamin D supplementation has increased over time. Follow-up studies of these off-label treatments are needed. Objective To study inflammatory activity and adverse effects in rituximab-treated multiple sclerosis patients, and associations with 25-hydroxy-vitamin D levels. Methods Retrospectively collected data on repeated estimates of relapses, disability, side effects, magnetic resonance imaging, laboratory measures including 25-hydroxy-vitamin D levels and self-perceived health. Results In 272 multiple sclerosis patients with a mean follow-up of 43 months, we identified seven possible relapses during active rituximab treatment. On magnetic resonance imaging examination, new T2 lesions were seen in 1.3% (10 out of 792 scans), and 0.25% (two out of 785 scans) showed contrast enhancement. Adjusted 25-hydroxy-vitamin D levels in samples drawn close to all magnetic resonance images with new T2 lesions were lower compared to the remainder (62 vs. 81 nmol/l; P = 0.030). Levels of 25-hydroxy-vitamin D were associated with self-perceived health ( r = 0.18, P = 0.041, n = 130) and C-reactive protein ( r = –0.13, P = 0.042) but not with the risk of side effects. Conclusion The inflammatory activity in this rituximab-treated multiple sclerosis population that increasingly used vitamin D supplementation was extremely low. Higher 25-hydroxy-vitamin D levels were associated with beneficial outcomes.

Clinically sufficient vitamin D levels at breast cancer diagnosis and survival outcomes in a prospective cohort of 3,995 patients after a median follow-up of 10 years.

2021 ◽  
Vol 39 (15_suppl) ◽  
pp. 10510-10510
Author(s):  
Song Yao ◽  
Haiyang Sheng ◽  
Marilyn L. Kwan ◽  
Qianqian Zhu ◽  
Janise M. Roh ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Vitamin D ◽  
Prospective Cohort ◽  
Breast Cancer Survivors ◽  
Breast Cancer Diagnosis ◽  
Vitamin D Supplementation ◽  
Stage Disease ◽  
Vitamin D Levels ◽  
Sufficient Vitamin

10510 Background: There have been suggestive findings for better cancer survival with vitamin D supplementation in the recent VITAL trial. The findings are consistent with meta-analyses based on earlier randomized trials testing daily supplement vitamin D intake. As there is no ongoing or planned randomized trial of vitamin D supplementation in sight for women after breast cancer diagnosis, we evaluated relationships between serum levels of vitamin D and breast cancer outcomes in a large prospective cohort of breast cancer survivors. Methods: We measured 25-hydroxyvitamin D (25OHD) levels in serum samples collected at the time of diagnosis from 3,995 women with incident breast cancer enrolled in the Pathways Study, a large prospective cohort established in 2006 at Kaiser Permanente Northern California with active follow-up (FU). Potential determinants of 25OHD levels, including a polygenic score, were examined. Vitamin D levels were categorized based on clinical cutoffs as deficient ( < 20 ng/ml), insufficient (20 to < 30 ng/ml), or sufficient (≥30 ng/ml). These levels were then evaluated in relation to overall survival (OS), breast cancer-specific survival (BCSS), recurrence-free survival (RFS), and invasive disease-free survival (IDFS). Cox proportional hazards models were adjusted for non-clinical, clinical, and treatment factors and were further stratified by stage, estrogen receptor (ER) status, and body mass index (BMI). Results: Vitamin D supplement use, lower BMI, and self-reported white race were the strongest determinants of higher 25OHD levels. The polygenic score was significantly associated with 25OHD levels but explained only 0.3% of the variance. The median FU was 9.6 years (range: 0.3-13). Compared to those with deficient vitamin D levels, patients with sufficient levels had significantly better survival outcomes, which remained after controlling for various covariates (OS: HR [95% CI] = 0.73 [0.58-0.91]; BCSS: HR = 0.78 [0.56-1.09]; RFS: HR = 0.79 [0.65-0.97]; IDFS: HR = 0.82 [0.68-0.99]). Associations were similar by ER status, but stronger among patients with more advanced stage disease and those with under-weight or normal BMI. Black patients had the lowest 25OHD levels, which contributed to their poorer survival compared to white patients. Adding 25OHD levels to the Cox model of OS lowered the HR associated with Black vs. white race from 2.03 (1.57-2.62) to 1.79 (1.37-2.32). Conclusions: Sufficient vitamin D levels at the time of diagnosis were associated with improved breast cancer prognosis. Consistent with results from randomized trials, our findings from a large observational cohort of breast cancer survivors with long FU provide the strongest evidence to date for maintaining sufficient vitamin D levels in breast cancer patients, including among Black women and those with more advanced stage disease.

scholarly journals Characterizing the Assessment and Management of Vitamin D Levels in Patients with Osteoporosis in Clinical Practice: A Chart Review Initiative

2015 ◽  
Vol 2015 ◽  
pp. 1-7
Author(s):  
Jonathan D. Adachi ◽  
Jacques P. Brown ◽  
George Ioannidis
Keyword(s):  
Vitamin D ◽  
Clinical Practice ◽  
Bone Health ◽  
Chart Review ◽  
Serum Vitamin ◽  
Vitamin D Supplementation ◽  
Serum Vitamin D ◽  
Vitamin D Levels ◽  
25 Hydroxy Vitamin D ◽  
Vitamin D Supplements

Though vitamin D is important for bone health, little is known about the monitoring and management of vitamin D levels in patients with osteoporosis in clinical practice—a deficit this chart review initiative aimed to remedy. A total of 52 physicians completed profiles for 983 patients being treated for osteoporosis between November 2008 and April 2009. Information collected included demographics; fracture risk factors; availability and level of serum vitamin D measurements; and information on osteoporosis medications and calcium and vitamin D supplementation. Physicians also evaluated patients’ current regimens and detailed proposed changes, if applicable. Nearly 85% of patients were prescribed calcium and vitamin D supplements. Serum 25-hydroxy vitamin D levels were available for 73% of patients. Of these patients, approximately 50% had levels less than 80 nmol/L, which contrasts with the 37% thought to have “unsatisfactory” vitamin D levels based on physician perceptions. Physicians felt 26% of patients would benefit from additional vitamin D supplementation. However, no changes to the osteoporosis regimen were suggested for 48% of patients perceived to have “unsatisfactory” vitamin D levels. The results underscore the importance of considering vitamin D status when looking to optimize bone health.

scholarly journals Assessment the effect of vitamin D supplementation on plasma vitamin D levels, inflammation, and oxidative stress biomarkers based on vitamin D receptor genetic variation in breast cancer survivors: a protocol for clinical trial

2021 ◽  
Vol 40 (1) ◽  
Author(s):  
Elham kazemian ◽  
Mohammad Esmaeil Akbari ◽  
Nariman Moradi ◽  
Safoora Gharibzadeh ◽  
Atieh Amouzegar ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Vitamin D ◽  
Cell Proliferation ◽  
Genetic Variation ◽  
Cancer Survivors ◽  
Breast Cancer Survivors ◽  
Vitamin D Supplementation ◽  
Plasma Vitamin ◽  
Environmental Aspects ◽  
Vitamin D Levels

Abstract Background Both human genes and environmental exposures, due to complex interplay, play important role in the cancer etiology. Vitamin D is associated with a reduced risk of incidence and mortality of several human cancers. This study will aim to investigate the possible effects of individual polymorphisms in vitamin D receptor (VDR) as well as effects of VDR haplotypes on response to vitamin D supplementation in breast cancer survivors. Methods This is an interventional study in which the effects of vitamin D supplementation on plasma vitamin D levels, inflammatory and antioxidant biomarkers and factors associated with cell proliferation, differentiation, damage, and apoptosis will be investigated stratified by variations in VDR genotype. The present study will be conducted on breast cancer survivors referred to the Shohadaye Tajrish hospital and its associated clinics. One hundred ninety-eight breast cancer survivors will receive 4000 IU of vitamin D3 daily for 12 weeks. VDR Fok1, ApaI, TaqI, BsmI, and Cdx-2 genotype will be determined at the end of the study and responses to vitamin D supplements (inflammatory, antioxidant, cell proliferation, differentiation, damage, and apoptosis biomarkers) will be compared between the three subgroups of each VDR polymorphism as well as different VDR haplotype categories. Discussion Genetic variation is a fundamental factor influencing individuals’ divergent responses to diet, nutritional status, metabolic response, and diet-related health disorders. Furthermore, studies of gene and environment interactions will provide a precise and accurate assessments of individuals’ dietary requirements by considering both the genetic and environmental aspects simultaneously. The results of the current study, to some extent, will highlight the discrepancies existing in the findings of different studies regarding vitamin D, VDR, and cancer by considering both the genetic and environmental aspects simultaneously. If responses to vitamin D supplementation could be modified by VDR SNPs, determining the distribution of VDR polymorphisms in both breast cancer survivors and healthy populations will provide a new insight into the vitamin D requirements of individuals to prevent cancer and its related mortality based on their genotypes. Trial registration This trial has been registered on Iranian Registry of Clinical Trials (IRCT) under the identification code: IRCT2017091736244N1, registration date: 2017-11-10, http://www.irct.ir/trial/27153

Vitamin D and breast cancer

2014 ◽  
Vol 155 (28) ◽  
pp. 1091-1096 ◽  
Author(s):  
Tamás Nagykálnai ◽  
László Landherr ◽  
András Csaba Nagy
Keyword(s):  
Breast Cancer ◽  
Vitamin D ◽  
Tumor Suppressor Genes ◽  
Active Form ◽  
Serum Vitamin ◽  
Serum Levels ◽  
Vitamin D Supplementation ◽  
Scientific Publications ◽  
Serum Vitamin D ◽  
Vitamin D Levels

The active form of vitamin D, in conjunction with his own receptor, affect a multitude of biological processes in the cell (inter alia it influences the expression of oncogenes and tumor suppressor genes). There is an increasing volume of scientific publications examining the relationships between serum vitamin D levels, vitamin D supplementation and malignant diseases. Some articles suggest inverse relationship between the low serum levels of vitamin D and the breast cancer risk and mortality, whilst other publications do not support this view. Thus the present opinion is conflicted. Vitamin D can exert a beneficial influence on the symptoms and outcomes of a large number of ailments, but its role in affecting cancer is still not completely clear. Orv. Hetil., 2014, 155(28), 1091–1096.

scholarly journals Calcium and vitamin D supplementation in children with frequently relapsing and steroid-dependent nephrotic syndrome

2012 ◽  
Vol 52 (1) ◽  
pp. 16
Author(s):  
Ayi Dilla Septarini ◽  
Taralan Tambunan ◽  
Pustika Amalia
Keyword(s):  
Bone Mineral Density ◽  
Vitamin D ◽  
Bone Mineral ◽  
Vitamin D Supplementation ◽  
Ionized Calcium ◽  
Mineral Density ◽  
Vitamin D Levels ◽  
Before And After ◽  
25 Hydroxy Vitamin D ◽  
Serum Ionized Calcium

Background Children with frequently relapsing and steroiddependentnephrotic syndrome (FRNS/SDNS) are at riskfor osteoporosis due to impaired metabolism of calcium andvitamin D.Objective To determine the effect of calcium and vitamin Dsupplementation on bone mineral density, serum ionized calciumlevels and serum 25-hydroxy-vitamin D levels in children withFRNS and SDNS.Methods A clinical trial with a before and after design wasperformed. Subjects were SDNS or FRNS pediatric patients 2: 5years of age. Subjects received 800 mg elemental calcium and 400IU vitamin D supplementation for 8 weeks. Serum ionized calcium,serum 25-hydroxy-vitamin D [25(0H)D], and bone mineral density(BMD) were determined before and after the supplementation.Results Of the 30 subjects, 28 completed the study. However,only 20 subjects underwent BMD determination before and aftersupplementation. Of the 28 subjects, 22 had hypocalcemia and 26had low vitamin D levels. Osteopenia was found in 14/20 subjects andosteoporosis was in 2/20 subjects. After 8 weeks of supplementation,mean serum ionized calcium increased from low [1.15 mmol/L (SDO.oJ)] to normal [1.18 mmol/L (SD 0.04)] (P< 0.001) levels, butmean serum 25(0H)D only increased from vitamin D deficiencycategory [20 ng/mL (SD 7 .7)] to vitamin D insufficiency category[25.5 ng/mL (7.7)] (P=0.010). Mean z-score BMD increased from-1.1 (SD 0.9) to -0.7 (SD 0.2) after supplementation (P<0.001).Conclusion Calcium vitamin D supplementation effectively increasedserum ionized calcium, serum 25 (OH)D, and BMD in subjectswith FRNS and SDNS. [Paediatr lndones. 2012;52:16-21].

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