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Liu H, Ma Q, Han X, Huang W. Bone mineral density and its correlation with serum 25-hydroxyvitamin D levels in patients with hyperthyroidism. J Int Med Res 2020; 48:300060520903666. [PMID: 32043416 PMCID: PMC7111038 DOI: 10.1177/0300060520903666] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Haixia Liu
- Weifang People’s Hospital, Weifang City, Shandong Province, China
| | - Qihang Ma
- Weifang People’s Hospital, Weifang City, Shandong Province, China
| | - Xinli Han
- Weifang Traditional Chinese Hospital, Weifang City, Shandong Province, China
| | - Wenwen Huang
- Weifang People’s Hospital, Weifang City, Shandong Province, China
- Wenwen Huang, Weifang People’s Hospital, 151 Guangwen Street, Kuiwen District, Weifang City, 261041, Shandong Province, China.
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Muscogiuri G, Barrea L, Altieri B, Di Somma C, Bhattoa HP, Laudisio D, Duval GT, Pugliese G, Annweiler C, Orio F, Fakhouri H, Savastano S, Colao A. Calcium and Vitamin D Supplementation. Myths and Realities with Regard to Cardiovascular Risk. Curr Vasc Pharmacol 2019; 17:610-617. [DOI: 10.2174/1570161117666190408165805] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2018] [Revised: 02/09/2019] [Accepted: 02/20/2019] [Indexed: 01/05/2023]
Abstract
Vitamin D and calcium are considered crucial for the treatment of bone diseases. Both vitamin
D and calcium contribute to bone homeostasis but also preserve muscle health by reducing the risk
of falls and fractures. Low vitamin D concentrations result in secondary hyperparathyroidism and contribute
to bone loss, although the development of secondary hyperparathyroidism varies, even in patients
with severe vitamin D deficiency. Findings from observational studies have shown controversial
results regarding the association between bone mineral density and vitamin D/calcium status, thus
sparking a debate regarding optimum concentrations of 25-hydroxyvitamin D and calcium for the best
possible skeletal health. Although most of the intervention studies reported a positive effect of supplementation
with calcium and vitamin D on bone in patients with osteoporosis, this therapeutic approach
has been a matter of debate regarding potential side effects on the cardiovascular (CV) system. Thus, the
aim of this review is to consider the current evidence on the physiological role of vitamin D and calcium
on bone and muscle health. Moreover, we provide an overview on observational and interventional studies
that investigate the effect of vitamin D and calcium supplementation on bone health, also taking into
account the possible CV side-effects. We also provide molecular insights on the effect of calcium plus
vitamin D on the CV system.
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Affiliation(s)
- Giovanna Muscogiuri
- Endocrinology Unit, Dipartimento di Medicina Clinica e Chirurgia, Federico II University, Medical School of Naples, Naples, Italy
| | - Luigi Barrea
- Endocrinology Unit, Dipartimento di Medicina Clinica e Chirurgia, Federico II University, Medical School of Naples, Naples, Italy
| | - Barbara Altieri
- Endocrinology Unit, Dipartimento di Medicina Clinica e Chirurgia, Federico II University, Medical School of Naples, Naples, Italy
| | | | - Harjit pal Bhattoa
- Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Daniela Laudisio
- Endocrinology Unit, Dipartimento di Medicina Clinica e Chirurgia, Federico II University, Medical School of Naples, Naples, Italy
| | - Guillaume T. Duval
- Department of Geriatric Medicine, University Memory Center, Research Center on Autonomy and Longevity (CeRAL), Angers University Hospital, Angers, France, School of Medicine and UPRES EA 4638, University of Angers, Angers, France
| | - Gabriella Pugliese
- Endocrinology Unit, Dipartimento di Medicina Clinica e Chirurgia, Federico II University, Medical School of Naples, Naples, Italy
| | - Cédric Annweiler
- Department of Geriatric Medicine, University Memory Center, Research Center on Autonomy and Longevity (CeRAL), Angers University Hospital, Angers, France, School of Medicine and UPRES EA 4638, University of Angers, Angers, France
| | - Francesco Orio
- Department of Sports Science and Wellness, "Parthenope" University Naples, Naples, Italy
| | - Hana Fakhouri
- Department of Biochemistry and Molecular Biology, College of Medicine, Al Faisal University, Riyadh, Saudi Arabia
| | - Silvia Savastano
- Endocrinology Unit, Dipartimento di Medicina Clinica e Chirurgia, Federico II University, Medical School of Naples, Naples, Italy
| | - Annamaria Colao
- Endocrinology Unit, Dipartimento di Medicina Clinica e Chirurgia, Federico II University, Medical School of Naples, Naples, Italy
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Vatakencherry RMJ, Saraswathy L. Association between vitamin D and hypertension in people coming for health check up to a tertiary care centre in South India. J Family Med Prim Care 2019; 8:2061-2067. [PMID: 31334180 PMCID: PMC6618207 DOI: 10.4103/jfmpc.jfmpc_236_19] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 03/20/2019] [Accepted: 04/09/2019] [Indexed: 12/13/2022] Open
Abstract
INTRODUCTION Vitamin D has many effects apart from its role in calcium metabolism and bone health. Vitamin D is derived from endogenous ultraviolet-B induced vitamin D synthesis in the skin, and the current high prevalence of vitamin D deficiency in India, can be attributed to lifestyle related low sunlight exposure. Identification of the vitamin D receptor (VDR) in almost all human cells, suggests a role in extra skeletal diseases. Studies have shown that vitamin D deficiency is an independent risk factor for hypertension. AIM To evaluate the association between vitamin D and hypertension in people coming for health check up to a tertiary care center in South India. MATERIALS AND METHODS Study was carried out as a cross sectional study in a tertiary care hospital in South India. Participants (520) were both males and females (337 males and 183 females), between the age group of 20-60 years attending the comprehensive health check up clinic of our hospital. STATISTICAL ANALYSIS Statistical analysis was done using IBM SPSS statistics 20.0. RESULTS Severe vitamin D deficiency was highly prevalent in people with hypertension than in people without hypertension (P value <0.001). CONCLUSION Since India is a tropical country, till recently it was believed that vitamin D deficiency and its ill effects are uncommon. But it was found that, vitamin D deficiency was highly prevalent in people with hypertension in South India, emphasizing the need of early vitamin D supplementation. Therefore, to reduce cardiovascular morbidity, early identification of vitamin D deficiency and appropriate vitamin D supplementation may be of primary importance in population, especially like ours, having high prevalence.
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Affiliation(s)
- Rose Mary J. Vatakencherry
- Department of Physiology, Amrita School of Medicine, Amrita Institute of Medical Sciences, Amrita Vishwa Vidyapeetham University, Kochi, Kerala
| | - L Saraswathy
- Department of Physiology, Amrita School of Medicine, Amrita Institute of Medical Sciences, Amrita Vishwa Vidyapeetham University, Kochi, Kerala
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4
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Left ventricular adverse remodeling after myocardial infarction and its association with vitamin D levels. Int J Cardiol 2018; 277:159-165. [PMID: 30139699 DOI: 10.1016/j.ijcard.2018.08.052] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 07/07/2018] [Accepted: 08/17/2018] [Indexed: 01/16/2023]
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Wimalawansa SJ. Vitamin D and cardiovascular diseases: Causality. J Steroid Biochem Mol Biol 2018; 175:29-43. [PMID: 28027913 DOI: 10.1016/j.jsbmb.2016.12.016] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Revised: 10/01/2016] [Accepted: 12/23/2016] [Indexed: 12/21/2022]
Abstract
Vitamin D regulates blood pressure, cardiac functions, and endothelial and smooth muscle cell functions, thus, playing an important role in cardiovascular health. Observational studies report associations between vitamin D deficiency with hypertension and cardiovascular-related deaths. Peer-reviewed papers were examined in several research databases as per the guidelines of the Preferred Reporting Items for Systematic Reviews, using key words that address the relationship between vitamin D and cardiovascular disease. Correlations and interpretations were made considering the risks-benefits, broader evidence, and implications. This review analyzed current knowledge regarding the effects of vitamin D on the cardiovascular system. 1,25(OH)2D and related epigenetic modifications subdue cellular inflammation, improve overall endothelial functions, reduce age-related systolic hypertension and vascular rigidity, and attenuate the actions of the renin-angiotensin-aldosterone system. Most observational and ecological studies support 25(OH)vitamin D having protective effects on the cardiovascular system. However, the association of vitamin D deficiency with cardiovascular diseases is based primarily on observational and ecological studies and thus, is a matter of controversy. Adequately powered, randomized controlled clinical trial data are not available to confirm these associations. Thus, to test the hypothesis that correction of vitamin D deficiency protects the cardiovascular system, well-designed, statistically powered, longer-term clinical trials are needed in persons with vitamin D deficiency. Nevertheless, the available data support that adequate vitamin D supplementation and/or sensible sunlight exposure to achieve optimal vitamin D status are important in the prevention of cardiovascular disease and other chronic diseases.
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Affiliation(s)
- Sunil J Wimalawansa
- Professor of Medicine, Endocrinology & Nutrition, Cardio Metabolic Institute, NJ, USA.
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Hacioglu Y, Karabag T, Piskinpasa ME, Sametoglu F, Yuksel Y. Impaired Cardiac Functions and Aortic Elastic Properties in Patients with Severe Vitamin D Deficiency. J Cardiovasc Echogr 2018; 28:171-176. [PMID: 30306021 PMCID: PMC6172887 DOI: 10.4103/jcecho.jcecho_82_17] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Background The study explored the effect of severe Vitamin D deficiency on cardiac functions and aortic elastic properties determined by echocardiography. Patients and Methods It included 56 patients with Vitamin D deficiency (Group 1; 16 men, 40 women; mean age 43.1 ± 11.4 years) and 42 healthy individuals with normal Vitamin D levels (Group 2; 11 men, 31 women; mean age 40.0 ± 7.5 years). Calcium, parathormone, alkaline phosphatase, and Vitamin D levels were measured from blood samples, and all participants underwent echocardiographic examination. Results Left ventricular diastolic functions were determined by both conventional and tissue Doppler methods and were found to be impaired in Group 1 compared to Group 2. Aortic distensibility was significantly reduced in Group 1 compared to Group 2, whereas aortic stiffness index was significantly increased. Left atrial active emptying volume and fraction (LAAEV and LAAEF) were significantly higher in Group 1 than in Group 2. There were significant negative correlations between Vitamin D level and LAAEV, LAAEF, and septal E/E' ratio and significant positive correlations between Vitamin D level and septal, lateral, anterior, and right ventricular annular E' velocities. Conclusion In severe Vitamin D deficiency, echocardiographically assessed diastolic functions appeared particularly impaired, and ventricular myocardial velocities and aortic elastic parameters were also adversely affected. In addition, LA mechanical functions were impaired, probably secondary to disturbed diastolic functions.
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Affiliation(s)
- Yalcin Hacioglu
- Department of Family Medicine, Istanbul Education and Research Hospital, Istanbul, Turkey
| | - Turgut Karabag
- Department of Cardiology, Istanbul Education and Research Hospital, Istanbul, Turkey
| | - Mehmet Emin Piskinpasa
- Department of Internal Medicine, Istanbul Education and Research Hospital, Istanbul, Turkey
| | - Fettah Sametoglu
- Department of Internal Medicine, Istanbul Education and Research Hospital, Istanbul, Turkey
| | - Yasin Yuksel
- Department of Cardiology, Istanbul Education and Research Hospital, Istanbul, Turkey
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Serdar MA, Batu Can B, Kilercik M, Durer ZA, Aksungar FB, Serteser M, Coskun A, Ozpinar A, Unsal I. Analysis of Changes in Parathyroid Hormone and 25 (OH) Vitamin D Levels with Respect to Age, Gender and Season: A Data Mining Study. J Med Biochem 2017; 36:73-83. [PMID: 28680352 PMCID: PMC5471662 DOI: 10.1515/jomb-2017-0002] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Accepted: 12/07/2016] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND 25 (OH) vitamin D3 (25(OH)D) and parathyroid hormone (PTH) are important regulators of calcium homeostasis. The aim of this study was to retrospectively determine the cut-off for sufficient 25(OH)D in a four-season region and the influence of age, seasons, and gender on serum 25(OH)D and PTH levels. METHODS Laboratory results of 9890 female and 2723 male individuals aged 38.8±22.1 years who had simultaneous measurements of 25(OH)D and PTH were retrospectively analyzed by statistical softwares. Serum 25(OH)D and PTH levels were measured by a mass spectrometry method and by an electrochemiluminescence immunoassay, respectively. RESULTS Mean serum 25(OH)D levels showed a sinusoidal fluctuation throughout the year and were significantly (p<0.01) higher in summer and autumn. On the other hand, PTH levels were significantly higher (p<0.01) in women and showed an opposite response to seasonal effects relative to 25(OH)D. Lowest levels of 25(OH)D were detected in people aged between 20 and 40 years whereas PTH hormone levels were gradually increasing in response to aging. The significant exponential inverse relationship that was found between PTH and 25(OH)D (PTH=exp(4.12-0.064*sqrt(25(OH)D)) (r=-0.325, R- squared=0.105, p<0.001)) suggested that the cut-off for sufficient 25(OH)D should be 75 nmol/L. CONCLUSIONS Our retrospective study based on large data set supports the suitability of the currently accepted clinical cut-off of 75 nmol/L for sufficient 25(OH)D. However, the issue of assessing Vitamin D deficiency remains difficult due to seasonal variations in serum 25(OH)D. Therefore, PTH measurements should complement 25(OH)D results for diagnosing Vitamin D deficiency. It is imperative that seasonally different criteria should be considered in future.
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Affiliation(s)
- Muhittin A. Serdar
- School of Medicine, Department of Medical Biochemistry, Acibadem University, Istanbul, Turkey
- Clinlab Laboratories, Acibadem Healthcare Group, Ankara, Turkey
| | - Başar Batu Can
- School of Medicine, Department of Medical Biochemistry, Acibadem University, Istanbul, Turkey
| | - Meltem Kilercik
- School of Medicine, Department of Medical Biochemistry, Acibadem University, Istanbul, Turkey
| | - Zeynep A. Durer
- School of Medicine, Department of Medical Biochemistry, Acibadem University, Istanbul, Turkey
| | - Fehime Benli Aksungar
- School of Medicine, Department of Medical Biochemistry, Acibadem University, Istanbul, Turkey
| | - Mustafa Serteser
- School of Medicine, Department of Medical Biochemistry, Acibadem University, Istanbul, Turkey
| | - Abdurrahman Coskun
- School of Medicine, Department of Medical Biochemistry, Acibadem University, Istanbul, Turkey
| | - Aysel Ozpinar
- School of Medicine, Department of Medical Biochemistry, Acibadem University, Istanbul, Turkey
| | - Ibrahim Unsal
- School of Medicine, Department of Medical Biochemistry, Acibadem University, Istanbul, Turkey
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A Population-Based Model to Consider the Effect of Seasonal Variation on Serum 25(OH)D and Vitamin D Status. BIOMED RESEARCH INTERNATIONAL 2015; 2015:168189. [PMID: 26421279 PMCID: PMC4569755 DOI: 10.1155/2015/168189] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Accepted: 08/16/2015] [Indexed: 12/19/2022]
Abstract
Background. We elaborated a model that predicts the centiles of the 25(OH)D distribution taking into account seasonal variation. Methods. Data from two Swiss population-based studies were used to generate (CoLaus) and validate (Bus Santé) the model. Serum 25(OH)D was measured by ultra high pressure LC-MS/MS and immunoassay. Linear regression models on square-root transformed 25(OH)D values were used to predict centiles of the 25(OH)D distribution. Distribution functions of the observations from the replication set predicted with the model were inspected to assess replication. Results. Overall, 4,912 and 2,537 Caucasians were included in original and replication sets, respectively. Mean (SD) 25(OH)D, age, BMI, and % of men were 47.5 (22.1) nmol/L, 49.8 (8.5) years, 25.6 (4.1) kg/m2, and 49.3% in the original study. The best model included gender, BMI, and sin-cos functions of measurement day. Sex- and BMI-specific 25(OH)D centile curves as a function of measurement date were generated. The model estimates any centile of the 25(OH)D distribution for given values of sex, BMI, and date and the quantile corresponding to a 25(OH)D measurement. Conclusions. We generated and validated centile curves of 25(OH)D in the general adult Caucasian population. These curves can help rank vitamin D centile independently of when 25(OH)D is measured.
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Guessous I. Role of Vitamin D deficiency in extraskeletal complications: predictor of health outcome or marker of health status? BIOMED RESEARCH INTERNATIONAL 2015; 2015:563403. [PMID: 26075246 PMCID: PMC4436443 DOI: 10.1155/2015/563403] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Accepted: 01/09/2015] [Indexed: 12/31/2022]
Abstract
The relationship of vitamin D with extraskeletal complications, such as cardiovascular disease, cancer, and autoimmune disease, is of major interest considering its roles in key biological processes and the worldwide high prevalence of vitamin D deficiency. However, the causal relationships between vitamin D and most extraskeletal complications are weak. Currently, a heated debate over vitamin D is being conducted according to two hypotheses. In this review, we first present the different arguments that suggest a major role of vitamin D in a very broad type of extraskeletal complications (hypothesis #1). We then present results from recent meta-analyses of randomized controlled trials indicating a lack of association of vitamin D with major extraskeletal complications (hypothesis #2). We discuss different issues (e.g., causality, confounding, reverse causation, misclassification, and Mendelian randomization) that contribute to the favoring of one hypothesis over the other. While ultimately only one hypothesis is correct, we anticipate that the results from the ongoing randomized controlled trials will be unlikely to reconcile the divided experts.
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Affiliation(s)
- Idris Guessous
- Unit of Population Epidemiology, Department of Community Medicine and Primary Care and Emergency Medicine, Geneva University Hospitals, 1214 Geneva, Switzerland
- Institute of Social and Preventive Medicine (IUMSP), Lausanne University Hospital, 1010 Lausanne, Switzerland
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA 1518, USA
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Roy A, Lakshmy R, Tarik M, Tandon N, Reddy KS, Prabhakaran D. Independent association of severe vitamin D deficiency as a risk of acute myocardial infarction in Indians. Indian Heart J 2015; 67:27-32. [PMID: 25820047 DOI: 10.1016/j.ihj.2015.02.002] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2015] [Accepted: 02/02/2015] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Association of vitamin D deficiency with coronary heart disease (CHD) has been widely reported. Emerging data has shown high prevalence of vitamin D deficiency among Indians. However, this association has not been studied in Indians. METHODS A case-control study with 120 consecutive cases of first incident acute myocardial infarction (MI) and 120 age and gender matched healthy controls was conducted at All India Institute of Medical Sciences, New Delhi. The standard clinical and biochemical risk factors for MI were assessed for both cases and controls. Serum 25 (OH) vitamin D assay was performed from stored samples for cases and controls using radioimmunoassay. RESULTS Vitamin D deficiency [25(OH) D < 30 ng/ml] was highly prevalent in cases and controls (98.3% and 95.8% respectively) with median levels lower in cases (6 ng/ml and 11.1 ng/ml respectively; p < 0.001). The cases were more likely to have diabetes, hypertension and consume tobacco and alcohol. They had higher waist hip ratio, total and LDL cholesterol. Multivariate logistic regression analysis revealed severe vitamin D deficiency [25(OH) vitamin D < 10 ng/ml] was associated with a risk of MI with an odds ratio of 4.5 (95% CI 2.2-9.2). CONCLUSIONS This study reveals high prevalence of vitamin D deficiency among cases of acute MI and controls from India, with levels of 25 (OH)D being significantly lower among cases. Despite rampant hypovitaminosis, severe vitamin D deficiency was associated with acute MI after adjusting for conventional risk factors. This association needs to be tested in larger studies in different regions of the country.
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Affiliation(s)
- Ambuj Roy
- Additional Professor, Dept. of Cardiology, Cardiothoracic Centre, All India Institute of Medical Sciences (AIIMS), Ansari Nagar, New Delhi, 110029, India.
| | - Ramakrishnan Lakshmy
- Dept. of Cardiac Biochemistry, Cardiothoracic Centre, All India Institute of Medical Sciences (AIIMS), Ansari Nagar, New Delhi, 110029, India
| | - Mohamad Tarik
- Dept. of Cardiac Biochemistry, Cardiothoracic Centre, All India Institute of Medical Sciences (AIIMS), Ansari Nagar, New Delhi, 110029, India
| | - Nikhil Tandon
- Dept. of Endocrinology, All India Institute of Medical Sciences (AIIMS), Ansari Nagar, New Delhi, 110029, India
| | - K Srinath Reddy
- Dept. of Cardiology, Cardiothoracic Centre, All India Institute of Medical Sciences (AIIMS), Ansari Nagar, New Delhi, 110029, India; President, Public Health Foundation of India Delhi, NCR, Plot No. 47, Sector 44, Institutional Area Gurgaon, Haryana 122003, India; Executive Director, Centre for Chronic Disease Control (CCDC) Professor, Chronic Disease Epidemiology, Public Health Foundation of India, Plot No. 47, Sector 44, Institutional Area Gurgaon, Haryana 122003, India
| | - Dorairaj Prabhakaran
- Dept. of Cardiology, Cardiothoracic Centre, All India Institute of Medical Sciences (AIIMS), Ansari Nagar, New Delhi, 110029, India
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Challoumas D, Stavrou A, Pericleous A, Dimitrakakis G. Effects of combined vitamin D--calcium supplements on the cardiovascular system: should we be cautious? Atherosclerosis 2014; 238:388-98. [PMID: 25558033 DOI: 10.1016/j.atherosclerosis.2014.12.050] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Revised: 12/18/2014] [Accepted: 12/19/2014] [Indexed: 01/16/2023]
Abstract
Despite the growing body of evidence on the potential effects of calcium and vitamin D as monotherapies on different cardiovascular (CV) parameters, the combined supplementation with calcium and vitamin D (CaD), which is most frequently encountered in clinical practice, has not received the attention it deserves. A literature search was conducted via EMBASE and Medline and identified 14 randomised controlled trials (RCTs) and 2 meta-analyses reporting on effects of combined supplementation with CaD on CV events, CV death, blood pressure, lipids, glucose metabolism and weight. Overall, the existing evidence does not support beneficial properties of supplementation with CaD on the CV system, nor does it suggest that a re-appraisal of the use of CaD is necessary due to adverse effects, although increased risk of CV events has been reported by some authors. The guidelines for the use of CaD supplementation need not change until well-conducted RCTs that have CV effects as primary outcomes and adjust for major confounders indicate otherwise.
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Affiliation(s)
- Dimitrios Challoumas
- Department of Upper GI Surgery, Gloucestershire Royal Hospital, Great Western Road, Gloucester, GL1 3NN, UK.
| | - Antonio Stavrou
- School of Medicine, Cardiff University, University Hospital of Wales, Heath Park Campus, Cardiff, CF 14 4XW, UK
| | - Agamemnon Pericleous
- School of Medicine, Cardiff University, University Hospital of Wales, Heath Park Campus, Cardiff, CF 14 4XW, UK
| | - Georgios Dimitrakakis
- Department of Cardiothoracic Surgery, University Hospital of Wales, Heath Park Campus, Cardiff, CF 14 4XW, UK
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Yakoob MY, Shi P, Hu FB, Campos H, Rexrode KM, Orav EJ, Willett WC, Mozaffarian D. Circulating biomarkers of dairy fat and risk of incident stroke in U.S. men and women in 2 large prospective cohorts. Am J Clin Nutr 2014; 100:1437-47. [PMID: 25411278 PMCID: PMC4232012 DOI: 10.3945/ajcn.114.083097] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND Previous observational studies of self-reported dairy product consumption and stroke risk have reported mixed findings. Few studies have used circulating biomarkers that provide objective measures of dairy fat intake. OBJECTIVES We tested the hypothesis that the circulating biomarkers of dairy fat, pentadecanoic acid (15:0), heptadecanoic acid (17:0), and trans palmitoleate (trans 16:1n-7), were associated with lower incidence of stroke, especially ischemic stroke. Secondarily, we evaluated 14:0, which is obtained from dairy products and beef, and also endogenously synthesized. DESIGN In participants from 2 large US cohorts (the Health Professionals Follow-Up Study: 51,529 men; the Nurses' Health Study: 121,700 women) with stored blood samples in 1993-1994 (n = 18,225) and 1989-1990 (n = 32,826), respectively, we prospectively identified 594 incident stroke cases (median follow-up: 8.3 y) and matched them 1:1 to risk-set-sampled control subjects by age, sex, race, and smoking. Total plasma and red blood cell (RBC) fatty acids were measured by using gas-liquid chromatography. Covariates were assessed by using validated questionnaires. Stroke events and subtypes were adjudicated by using medical records or other supporting documentation. We used conditional logistic regression to estimate associations of fatty acids with incident stroke, and cohort-specific findings were combined by inverse-variance weights. RESULTS After adjustment for demographic characteristics, lifestyle, cardiovascular disease risk factors, diet, and other circulating fatty acids, no significant associations with total stroke were seen for plasma 15:0 (pooled HR for highest compared with lowest quartiles: 0.85; 95% CI: 0.54, 1.33), 17:0 (0.99; 0.67, 1.49), trans 16:1 n-7 (0.89; 0.55, 1.45), or 14:0 (1.05; 0.62, 1.78). Results were similar for ischemic and hemorrhagic stroke subtypes, for RBC fatty acids, and in several different sensitivity analyses. CONCLUSION In 2 large prospective cohorts, circulating biomarkers of dairy fat were not significantly associated with stroke.
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Affiliation(s)
- Mohammad Y Yakoob
- From the Departments of Epidemiology (MYY, PS, and DM) and Nutrition (FBH, HC, and WCW), Harvard School of Public Health, Boston, MA; the Divisions of Preventive Medicine (KMR) and General Internal Medicine (EJO), Brigham and Women's Hospital and Harvard Medical School, Boston, MA; and the Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA (DM)
| | - Peilin Shi
- From the Departments of Epidemiology (MYY, PS, and DM) and Nutrition (FBH, HC, and WCW), Harvard School of Public Health, Boston, MA; the Divisions of Preventive Medicine (KMR) and General Internal Medicine (EJO), Brigham and Women's Hospital and Harvard Medical School, Boston, MA; and the Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA (DM)
| | - Frank B Hu
- From the Departments of Epidemiology (MYY, PS, and DM) and Nutrition (FBH, HC, and WCW), Harvard School of Public Health, Boston, MA; the Divisions of Preventive Medicine (KMR) and General Internal Medicine (EJO), Brigham and Women's Hospital and Harvard Medical School, Boston, MA; and the Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA (DM)
| | - Hannia Campos
- From the Departments of Epidemiology (MYY, PS, and DM) and Nutrition (FBH, HC, and WCW), Harvard School of Public Health, Boston, MA; the Divisions of Preventive Medicine (KMR) and General Internal Medicine (EJO), Brigham and Women's Hospital and Harvard Medical School, Boston, MA; and the Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA (DM)
| | - Kathryn M Rexrode
- From the Departments of Epidemiology (MYY, PS, and DM) and Nutrition (FBH, HC, and WCW), Harvard School of Public Health, Boston, MA; the Divisions of Preventive Medicine (KMR) and General Internal Medicine (EJO), Brigham and Women's Hospital and Harvard Medical School, Boston, MA; and the Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA (DM)
| | - E John Orav
- From the Departments of Epidemiology (MYY, PS, and DM) and Nutrition (FBH, HC, and WCW), Harvard School of Public Health, Boston, MA; the Divisions of Preventive Medicine (KMR) and General Internal Medicine (EJO), Brigham and Women's Hospital and Harvard Medical School, Boston, MA; and the Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA (DM)
| | - Walter C Willett
- From the Departments of Epidemiology (MYY, PS, and DM) and Nutrition (FBH, HC, and WCW), Harvard School of Public Health, Boston, MA; the Divisions of Preventive Medicine (KMR) and General Internal Medicine (EJO), Brigham and Women's Hospital and Harvard Medical School, Boston, MA; and the Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA (DM)
| | - Dariush Mozaffarian
- From the Departments of Epidemiology (MYY, PS, and DM) and Nutrition (FBH, HC, and WCW), Harvard School of Public Health, Boston, MA; the Divisions of Preventive Medicine (KMR) and General Internal Medicine (EJO), Brigham and Women's Hospital and Harvard Medical School, Boston, MA; and the Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA (DM)
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Gill TK, Hill CL, Shanahan EM, Taylor AW, Appleton SL, Grant JF, Shi Z, Grande ED, Price K, Adams RJ. Vitamin D levels in an Australian population. BMC Public Health 2014; 14:1001. [PMID: 25256413 PMCID: PMC4194387 DOI: 10.1186/1471-2458-14-1001] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Accepted: 09/18/2014] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Levels of vitamin D in the population have come under increasing scrutiny, however there are only a few studies in Australia which measure levels in the general population. The aim of this study was to measure the levels of vitamin D within a large population cohort and examine the association with seasons and selected demographic and health risk factors. METHODS A longitudinal cohort study of 2413 participants in the northwest suburbs of Adelaide, South Australia conducted between 2008 and 2010 was used to examine serum levels of 25-hydroxy vitamin D (25(OH)D) in relation to demographic characteristics (age, sex, income, education and country of birth), seasons, the use of vitamin D supplements and selected health risk factors (physical activity, body mass index and smoking). Both unadjusted and adjusted mean levels of serum 25(OH)D were examined, as were the factors associated with the unadjusted and adjusted prevalence of serum 25(OH)D levels below 50 and 75 nmol/L. RESULTS Overall, the mean level of serum 25(OH)D was 69.2 nmol/L with 22.7% of the population having a serum 25(OH)D level below 50 nmol/L, the level which is generally recognised as vitamin D deficiency. There were significantly higher levels of 25(OH)D among males compared to females (t = 4.65, p < 0.001). Higher levels of 25(OH)D were also measured in summer and autumn compared with winter and spring. Generally, mean levels of 25(OH)D were lower in those classified as obese. Smokers and those undertaking no or less than 150 minutes/week of physical activity also had lower levels of serum vitamin D. Obesity (as classified by body mass index), season and undertaking an insufficient level of physical activity to obtain a health benefit were significantly associated with the prevalence of vitamin D deficiency. CONCLUSIONS Vitamin D deficiency is prevalent in South Australia, affecting almost one quarter of the population and levels are related to activity, obesity and season even when adjusted for confounding factors. Improved methods of addressing vitamin D levels in population are required.
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Affiliation(s)
- Tiffany K Gill
- />School of Medicine, Faculty of Health Sciences, The University of Adelaide, Level 3, 122 Frome St, Adelaide, SA 5000 Australia
| | - Catherine L Hill
- />Rheumatology Department, The Queen Elizabeth Hospital, Woodville Rd, Woodville, SA 5011 Australia
- />The Health Observatory, The Queen Elizabeth Hospital, The University of Adelaide, Adelaide, SA 5005 Australia
| | - E Michael Shanahan
- />Rheumatology Department, Southern Adelaide Health Service, Repatriation General Hospital, Daws Rd, Daw Park, SA 5042 Australia
- />Flinders University, Bedford Park, SA 5041 Australia
| | - Anne W Taylor
- />Population Research and Outcome Studies, Discipline of Medicine, Faculty of Health Sciences, The University of Adelaide, Adelaide, SA 5005 Australia
| | - Sarah L Appleton
- />The Health Observatory, The Queen Elizabeth Hospital, The University of Adelaide, Adelaide, SA 5005 Australia
| | - Janet F Grant
- />Population Research and Outcome Studies, Discipline of Medicine, Faculty of Health Sciences, The University of Adelaide, Adelaide, SA 5005 Australia
| | - Zumin Shi
- />School of Medicine, Faculty of Health Sciences, The University of Adelaide, Level 3, 122 Frome St, Adelaide, SA 5000 Australia
| | - Eleonora Dal Grande
- />Population Research and Outcome Studies, Discipline of Medicine, Faculty of Health Sciences, The University of Adelaide, Adelaide, SA 5005 Australia
| | - Kay Price
- />School of Nursing and Midwifery, University of South Australia, Adelaide, SA 5000 Australia
| | - Robert J Adams
- />The Health Observatory, The Queen Elizabeth Hospital, The University of Adelaide, Adelaide, SA 5005 Australia
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14
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Eren E, Ellidag HY, Yılmaz A, Aydın O, Yılmaz N. Acute Phase Response: Implication in ST-segment Elevation Myocardial Infarction. Open Biochem J 2014; 8:44-51. [PMID: 24894970 PMCID: PMC4040932 DOI: 10.2174/1874091x01408010044] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Revised: 03/07/2014] [Accepted: 03/09/2014] [Indexed: 12/18/2022] Open
Abstract
We aimed to investigate the relation between serum inflammatory markers, 25OHvit-D3 and oxidative stress markers, namely paraoxonase1-arylesterase (PON1-ARE), total antioxidant status (TAS) and total oxidant status (TOS) in 30 male patients with ST-elevation myocardial infarction(STEMI) . There was negative correlation between tumor necrosis factor alpha and ARE; positive correlations between serum amyloid A(SAA) and oxidative stress index, SAA and TOS, 25OHvit-D3 and ARE. There was no statistically significant correlation between inflammation makers, oxidative stress markers and Gensini score. The main finding of our study was the tendency of inflammation markers, and oxidative stress markers, to change in relatively clear opposite directions in STEMI.
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Affiliation(s)
- Esin Eren
- Antalya Public Health Center of Ministry of Health, Antalya, Turkey
| | - Hamit Yasar Ellidag
- Central Laboratories of Antalya Education and Research Hospital of Ministry of Health, Antalya, Turkey
| | - Akar Yılmaz
- Cardiology of Antalya Education and Research Hospital of Ministry of Health, Antalya, Turkey
| | - Ozgür Aydın
- Maternity and Children's Hospital, Batman, Turkey
| | - Necat Yılmaz
- Central Laboratories of Antalya Education and Research Hospital of Ministry of Health, Antalya, Turkey
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15
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Effects of calcium intake on the cardiovascular system in postmenopausal women. Atherosclerosis 2013; 231:1-7. [DOI: 10.1016/j.atherosclerosis.2013.08.018] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2013] [Revised: 07/28/2013] [Accepted: 08/21/2013] [Indexed: 11/15/2022]
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16
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Rohrmann S, Braun J, Bopp M, Faeh D. Inverse association between circulating vitamin D and mortality--dependent on sex and cause of death? Nutr Metab Cardiovasc Dis 2013; 23:960-966. [PMID: 24095147 DOI: 10.1016/j.numecd.2013.05.005] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Revised: 05/02/2013] [Accepted: 05/25/2013] [Indexed: 12/31/2022]
Abstract
BACKGROUND AND AIMS In various populations, vitamin D deficiency is associated with chronic diseases and mortality. We examined the association between concentration of circulating 25-hydroxyvitamin D [25(OH)D], a marker of vitamin D status, and all-cause as well as cause-specific mortality. METHODS AND RESULTS The study included 3404 participants of the general adult Swiss population, who were recruited between November 1988 and June 1989 and followed-up until the end of 2008. Circulating 25(OH)D was measured by protein-bound assay. Cox proportional hazards regression was used to examine the association between 25(OH)D concentration and all-cause and cause-specific mortality adjusting for sex, age, season, diet, nationality, blood pressure, and smoking status. Per 10 ng/mL increase in 25(OH)D concentration, all-cause mortality decreased by 20% (HR = 0.83; 95% CI 0.74-0.92). 25(OH)D concentration was inversely associated with cardiovascular mortality in women (HR = 0.68, 95% CI 0.46-1.00 per 10 ng/mL increase), but not in men (HR = 0.97; 95% CI 0.77-1.23). In contrast, 25(OH)D concentration was inversely associated with cancer mortality in men (HR = 0.72, 95% CI 0.57-0.91 per 10 ng/mL increase), but not in women (HR = 1.14, 95% CI 0.93-1.39). Multivariate adjustment only slightly modified the 25(OH)D-mortality association. CONCLUSION 25(OH)D was similarly inversely related to all-cause mortality in men and women. However, we observed opposite effects in women and men with respect to cardiovascular and cancer mortality.
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Affiliation(s)
- S Rohrmann
- Division of Cancer Epidemiology and Prevention, Institute of Social and Preventive Medicine, University of Zurich, Zurich, Switzerland; Unit of Demography and Health Statistics, Institute of Social and Preventive Medicine, University of Zurich, Zurich, Switzerland.
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17
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Pillar R, G Lopes MG, Rocha LA, Cuppari L, Carvalho AB, Draibe SA, Canziani MEF. Severe hypovitaminosis D in chronic kidney disease: association with blood pressure and coronary artery calcification. Hypertens Res 2013; 36:428-32. [PMID: 23364344 DOI: 10.1038/hr.2012.230] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Hypovitaminosis D occurs early in the course of chronic kidney disease (CKD), and its association with cardiovascular morbidity and mortality is well known. In this study, we aimed to evaluate whether the degree of hypovitaminosis D may differently affect blood pressure (BP) and coronary artery calcification (CAC) in nondialyzed CKD patients. This study included 80 CKD patients with a creatinine clearance between 15 and 60 ml/min/1.73 m(2) and serum 25 hydroxivitamin D [25(OH)D] level <30 ng/ml. Patients underwent 24-h ambulatory BP monitoring, evaluation of CAC (multi-slice computed tomography), and laboratory evaluation. Two groups, based on the degree of hypovitaminosis D, were defined according to the median 25(OH)D value. Patients with severe hypovitaminosis D [25(OH)D <17.2 ng/ml; S-group) exhibited a higher systolic BP at all time periods (24-h, nighttime, daytime) when compared to patients with mild hypovitaminosis D [25(OH)D >17.2 ng/ml; M-group]. No differences were found between the S and M-group in terms of diastolic BP and the presence of coronary calcification. In the multiple linear regression analysis, severe hypovitaminosis D was a predictor of 24-h, daytime and nighttime BP after controlling for a number of confounders. The severity of hypovitaminosis D was associated with increased BP in nondialyzed CKD patients. The degree of hypovitaminosis D was not related to CAC, which was equally elevated in both the severe and mild hypovitaminosis D groups.
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Affiliation(s)
- Roberta Pillar
- Department of Internal Medicine, Division of Nephrology, Federal University of São Paulo, Rua Pedro de Toledo 282, São Paulo, Brazil
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18
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Spence LA, Weaver CM. Calcium intake, vascular calcification, and vascular disease. Nutr Rev 2013; 71:15-22. [DOI: 10.1111/nure.12002] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Affiliation(s)
| | - Connie M Weaver
- Department of Nutrition Science; Purdue University; West Lafayette; Indiana; USA
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19
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Kang SC, Kim HJ, Kim MH. Effects of Astragalus membranaceus with supplemental calcium on bone mineral density and bone metabolism in calcium-deficient ovariectomized rats. Biol Trace Elem Res 2013; 151:68-74. [PMID: 23136088 DOI: 10.1007/s12011-012-9527-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2012] [Accepted: 10/11/2012] [Indexed: 10/27/2022]
Abstract
It has been reported that Astragalus membranaceus, an Asian traditional herb, has an estrogenic effect in vitro. To examine the possible role of A. membranaceus extract with supplemental calcium (Ca) on bone status in calcium-deficient (LCa) ovariectomized (OVX) rats, a total of 48 female rats were divided into six groups: (1) normal control, (2) sham operation with LCa (sham-LCa), (3) OVX with LCa (OVX-LCa), (4) A. membranaceus supplementation with OVX-LCa (OVX-MLCa), (5) Ca supplementation with OVX (OVX-Ca), and (6) A. membranaceus and Ca supplementation with OVX (OVX-MCa). A. membranaceus ethanol extract (500 mg/kg BW) and/or Ca (800 mg/kg BW) were administered orally for 8 weeks along with a Ca-deficient diet. Results revealed that Ca supplementation with or without A. membranaceus extract significantly improved bone mineral density, biomechanical strength, and ash weight of the femur and tibia in OVX rats. High Ca with A. membranaceus combination supplementation significantly increased the ash weight of the femur and tibia and decreased urinary Ca excretion compared with supplementation of Ca alone. Uterine weight was not changed by A. membranaceus administration in OVX rats. These results suggest that A. membranaceus extract combined with supplemental Ca may be more protective against the Ca loss of bone than A. membranaceus or supplementation of Ca alone in calcium-insufficient postmenopausal women.
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Affiliation(s)
- Se-Chan Kang
- Department of Life Science, Gachon University, Seongnam, Gyeonggi, Republic of Korea
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20
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Gangula PR, Dong YL, Al-Hendy A, Richard-Davis G, Montgomery-Rice V, Haddad G, Millis R, Nicholas SB, Moseberry D. Protective cardiovascular and renal actions of vitamin D and estrogen. Front Biosci (Schol Ed) 2013; 5:134-48. [PMID: 23277041 PMCID: PMC3673780 DOI: 10.2741/s362] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Both basic science and clinical studies support the concept that vitamin D deficiency is involved in the pathogenesis of cardiovascular and renal diseases through its association with diabetes, obesity, and hypertension. Understanding the underlying mechanisms may provide a rationale for advocating adequate intake of vitamin D and calcium in all populations, thereby preventing many chronic diseases. This review explores the effect of vitamin D deficiency in the development of cardiovascular and renal diseases, and the role of vitamin D supplementation on cardiovascular outcomes. In addition, it highlights the importance of vitamin D intake for the prevention of adverse long-term health consequences, and in ways to facilitate the management of cardiovascular disease. This is particularly true for African American and postmenopausal women, who are at added risk for cardiovascular disease. We suggest that the negative cardiovascular effects of low vitamin D in postmenopausal women could be improved by a combined treatment of vitamin D and sex steroids acting through endothelium-dependent and/or -independent mechanisms, resulting in the generation of nitric oxide and calcitonin gene-related peptide (CGRP).
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Affiliation(s)
- Pandu R Gangula
- Departments of Physiology, Meharry Medical College, Nashville, TN 37208, USA.
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21
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Mahdavi K, Amirajam Z, Yazdankhah S, Majidi S, Adel MH, Omidvar B, Alasti M. The prevalence and prognostic role of vitamin D deficiency in patients with acute coronary syndrome: a single centre study in South-West of Iran. Heart Lung Circ 2012; 22:346-51. [PMID: 23266191 DOI: 10.1016/j.hlc.2012.11.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2012] [Revised: 10/30/2012] [Accepted: 11/08/2012] [Indexed: 01/14/2023]
Abstract
BACKGROUND The objectives of this study were estimating the prevalence of vitamin D deficiency in patients with acute coronary syndrome comparing with normal people and evaluating the relationship between vitamin D deficiency and short-term mortality in these patients. METHODS We considered 106 patients with non-ST elevation myocardial infarction and high-risk unstable angina and 110 patients with ST elevation myocardial infarction as group A. The control group (group B) consisted of 120 individuals without any known cardiovascular diseases or systemic disease. We measured serum 25-hydroxyvitamin D in all cases and classified them according to their serum 25-hydroxyvitamin D levels. Sufficient vitamin D level was considered ≥30 ng/ml. We followed the patients for 30 days after index admission. RESULTS The prevalence of hypovitaminosis D in group A was much higher than group B. In group A, 72% of patients had serum 25-hydroxyvitamin D level of 20 ng/ml or less. This percentage was only 27.4% in control group. We did not find any significant relationship between vitamin D deficiency and short-term mortality in patients with acute coronary syndrome. CONCLUSION Our data suggest that vitamin D deficiency was present in most of patients admitted with acute coronary syndrome in Ahvaz.
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Affiliation(s)
- Kamran Mahdavi
- Department of Cardiology, Imam Khomeini Hospital, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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22
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Gouveri E, Papanas N, Hatzitolios AI, Maltezos E. Hypovitaminosis D and peripheral arterial disease: emerging link beyond cardiovascular risk factors. Eur J Intern Med 2012; 23:674-81. [PMID: 22835416 DOI: 10.1016/j.ejim.2012.07.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2012] [Revised: 06/18/2012] [Accepted: 07/01/2012] [Indexed: 12/31/2022]
Abstract
Vitamin D has received increasing interest for its beneficial effect on health. Beyond its conventional role in bone metabolism, emerging evidence suggests a possible link between low vitamin D levels and cardiovascular disease (CVD), including peripheral arterial disease (PAD), and cardiovascular risk factors. Vitamin D interacts either directly with the vascular tree or indirectly through its association with cardiovascular risk factors, but the exact mechanism remains controversial. This review outlines the association between hypovitaminosis D and PAD. Both entities are quite prevalent in the general population and, therefore, their potential association might have important clinical implications. Whether vitamin D deficiency represents a novel risk factor for PAD/CVD, and whether vitamin D supplementation would reduce the burden of CVD still remains to be answered. Until then, vitamin D intake is not recommended for PAD/CVD prevention. Outdoor physical activity, coupled with adequate but safe sun exposure, is a healthy lifestyle practice suggested for the prevention of both PAD and hypovitaminosis D.
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Affiliation(s)
- E Gouveri
- Outpatient Clinic of Obesity, Diabetes and Metabolism, Second Department of Internal Medicine, Democritus University of Thrace, University Hospital of Alexandroupolis, 68100, Greece.
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23
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Czajka JL, McCay TS, Garneau DE. Physical and Cognitive Performance of the Least Shrew (Cryptotis parva) on a Calcium-Restricted Diet. Behav Sci (Basel) 2012; 2:172-185. [PMID: 25379219 PMCID: PMC4217630 DOI: 10.3390/bs2030172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2012] [Revised: 06/28/2012] [Accepted: 08/08/2012] [Indexed: 11/17/2022] Open
Abstract
Geological substrates and air pollution affect the availability of calcium to mammals in many habitats, including the Adirondack Mountain Region (Adirondacks) of the United States. Mammalian insectivores, such as shrews, may be particularly restricted in environments with low calcium. We examined the consequences of calcium restriction on the least shrew (Cryptotis parva) in the laboratory. We maintained one group of shrews (5 F, 5 M) on a mealworm diet with a calcium concentration comparable to beetle larvae collected in the Adirondacks (1.1 ± 0.3 mg/g) and another group (5 F, 3 M) on a mealworm diet with a calcium concentration almost 20 times higher (19.5 ± 5.1 mg/g). Animals were given no access to mineral sources of calcium, such as snail shell or bone. We measured running speed and performance in a complex maze over 10 weeks. Shrews on the high-calcium diet made fewer errors in the maze than shrews on the low-calcium diet (F1,14 = 12.8, p < 0.01). Females made fewer errors than males (F1,14 = 10.6, p < 0.01). Running speeds did not markedly vary between diet groups or sexes, though there was a trend toward faster running by shrews on the high calcium diet (p = 0.087). Shrews in calcium-poor habitats with low availability of mineral sources of calcium may have greater difficulty with cognitive tasks such as navigation and recovery of food hoards.
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Affiliation(s)
- Jessica L. Czajka
- Albany Medical College, 47 New Scotland Avenue, Albany, NY 12208, USA; E-Mail:
| | - Timothy S. McCay
- Department of Biology, Colgate University, Hamilton, NY 13346, USA; E-Mail:
| | - Danielle E. Garneau
- Center for Earth and Environmental Science, State University of New York Plattsburgh, Plattsburgh, NY 12901, USA
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24
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Current world literature. Curr Opin Nephrol Hypertens 2012; 21:557-66. [PMID: 22874470 DOI: 10.1097/mnh.0b013e3283574c3b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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25
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Datta M, Schwartz GG. Calcium and vitamin D supplementation during androgen deprivation therapy for prostate cancer: a critical review. Oncologist 2012; 17:1171-9. [PMID: 22836449 PMCID: PMC3448410 DOI: 10.1634/theoncologist.2012-0051] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2012] [Accepted: 07/02/2012] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Loss of bone mineral density is an unintended consequence of androgen deprivation therapy in men with prostate cancer. Supplementation with calcium and/or vitamin D in these men seems logical and is advocated by many lay and professional groups. METHODS We reviewed guidelines for calcium and vitamin D supplementation and the results of clinical trials of calcium and vitamin D supplementation on bone mineral density in men with prostate cancer undergoing androgen deprivation therapy. RESULTS Whether supplementation of men undergoing androgen deprivation therapy with calcium and/or vitamin D results in higher bone mineral density than no supplementation has not been tested. The results of 12 clinical trials show that, at the doses commonly recommended, 500-1,000 mg calcium and 200-500 IU vitamin D per day, men undergoing androgen deprivation lose bone mineral density. CONCLUSION The doses of calcium and vitamin D that have been tested are inadequate to prevent loss of bone mineral density in men undergoing androgen deprivation therapy. In light of evidence that high levels of dietary calcium and calcium supplement use are associated with higher risks for cardiovascular disease and advanced prostate cancer, intervention studies should evaluate the safety as well as the efficacy of calcium and vitamin D supplementation in these men.
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Affiliation(s)
- Mridul Datta
- Wake Forest Baptist Medical Center, Departments of Cancer Biology, Urology, and Epidemiology and Prevention, Winston-Salem, North Carolina, USA
| | - Gary G. Schwartz
- Wake Forest Baptist Medical Center, Departments of Cancer Biology, Urology, and Epidemiology and Prevention, Winston-Salem, North Carolina, USA
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Geurts L, Everard A, le Ruyet P, Delzenne NM, Cani PD. Ripened dairy products differentially affect hepatic lipid content and adipose tissue oxidative stress markers in obese and type 2 diabetic mice. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:2063-2068. [PMID: 22300436 DOI: 10.1021/jf204916x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Growing evidence suggests that the consumption of dairy products may contribute to a reduced incidence of cardiovascular risk factors, such as obesity, dyslipidemia, and type 2 diabetes. The fatty acid composition in milk fat, the duration of ripening, and the complexity of the food matrices are important factors that may interfere with the physiological impact. In this study, we treated genetic obese and type 2 diabetic mice (db/db) for 4 weeks with different dairy (cheese-based) products, differing by the duration of ripening (0, 15, or 35 days). We found that 35 days ripened product significantly improved glucose tolerance, an effect associated with a decreased adipose tissue lipid peroxide markers (TBARS and NAPDH-oxidase mRNA expression), without affecting body weight, food intake, and fat mass. Both fermented matrices significantly decreased the hepatic lipid content, without modifying plasma triglycerides or plasma total cholesterol. These data suggest that dairy products issued from longer ripening positively impact glucose tolerance, hepatic steatosis, and adipose tissue oxidative stress. Further investigations are warranted to decipher the interactions between milk products fermentation, lipids, and host metabolism.
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Affiliation(s)
- Lucie Geurts
- Metabolism and Nutrition Research Group, Louvain Drug Research Institute, Université Catholique de Louvain , Av. E. Mounier, 73 Box B1.73.11, B-1200 Brussels, Belgium
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Bochud M, Burnier M, Guessous I. Top Three Pharmacogenomics and Personalized Medicine Applications at the Nexus of Renal Pathophysiology and Cardiovascular Medicine. CURRENT PHARMACOGENOMICS AND PERSONALIZED MEDICINE 2011; 9:299-322. [PMID: 23049672 PMCID: PMC3460365 DOI: 10.2174/187569211798377135] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2011] [Revised: 10/08/2011] [Accepted: 10/13/2011] [Indexed: 12/18/2022]
Abstract
Pharmacogenomics is a field with origins in the study of monogenic variations in drug metabolism in the 1950s. Perhaps because of these historical underpinnings, there has been an intensive investigation of 'hepatic pharmacogenes' such as CYP450s and liver drug metabolism using pharmacogenomics approaches over the past five decades. Surprisingly, kidney pathophysiology, attendant diseases and treatment outcomes have been vastly under-studied and under-theorized despite their central importance in maintenance of health, susceptibility to disease and rational personalized therapeutics. Indeed, chronic kidney disease (CKD) represents an increasing public health burden worldwide, both in developed and developing countries. Patients with CKD suffer from high cardiovascular morbidity and mortality, which is mainly attributable to cardiovascular events before reaching end-stage renal disease. In this paper, we focus our analyses on renal function before end-stage renal disease, as seen through the lens of pharmacogenomics and human genomic variation. We herein synthesize the recent evidence linking selected Very Important Pharmacogenes (VIP) to renal function, blood pressure and salt-sensitivity in humans, and ways in which these insights might inform rational personalized therapeutics. Notably, we highlight and present the rationale for three applications that we consider as important and actionable therapeutic and preventive focus areas in renal pharmacogenomics: 1) ACE inhibitors, as a confirmed application, 2) VDR agonists, as a promising application, and 3) moderate dietary salt intake, as a suggested novel application. Additionally, we emphasize the putative contributions of gene-environment interactions, discuss the implications of these findings to treat and prevent hypertension and CKD. Finally, we conclude with a strategic agenda and vision required to accelerate advances in this under-studied field of renal pharmacogenomics with vast significance for global public health.
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Affiliation(s)
- Murielle Bochud
- Institute of Social and Preventive Medicine, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
| | - Michel Burnier
- Service of Nephrology, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
| | - Idris Guessous
- Institute of Social and Preventive Medicine, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
- Unit of Population Epidemiology, Division of Primary Care medicine, Department of Community Medicine and Primary Care and Emergency Medicine, Geneva University Hospital, Geneva, Switzerland
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