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Giustina A, Bilezikian JP, Adler RA, Banfi G, Bikle DD, Binkley NC, Bollerslev J, Bouillon R, Brandi ML, Casanueva FF, di Filippo L, Donini LM, Ebeling PR, Fuleihan GEH, Fassio A, Frara S, Jones G, Marcocci C, Martineau AR, Minisola S, Napoli N, Procopio M, Rizzoli R, Schafer AL, Sempos CT, Ulivieri FM, Virtanen JK. Consensus Statement on Vitamin D Status Assessment and Supplementation: Whys, Whens, and Hows. Endocr Rev 2024; 45:625-654. [PMID: 38676447 DOI: 10.1210/endrev/bnae009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Indexed: 04/28/2024]
Abstract
The 6th International Conference, "Controversies in Vitamin D," was convened to discuss controversial topics, such as vitamin D metabolism, assessment, actions, and supplementation. Novel insights into vitamin D mechanisms of action suggest links with conditions that do not depend only on reduced solar exposure or diet intake and that can be detected with distinctive noncanonical vitamin D metabolites. Optimal 25-hydroxyvitamin D (25(OH)D) levels remain debated. Varying recommendations from different societies arise from evaluating different clinical or public health approaches. The lack of assay standardization also poses challenges in interpreting data from available studies, hindering rational data pooling and meta-analyses. Beyond the well-known skeletal features, interest in vitamin D's extraskeletal effects has led to clinical trials on cancer, cardiovascular risk, respiratory effects, autoimmune diseases, diabetes, and mortality. The initial negative results are likely due to enrollment of vitamin D-replete individuals. Subsequent post hoc analyses have suggested, nevertheless, potential benefits in reducing cancer incidence, autoimmune diseases, cardiovascular events, and diabetes. Oral administration of vitamin D is the preferred route. Parenteral administration is reserved for specific clinical situations. Cholecalciferol is favored due to safety and minimal monitoring requirements. Calcifediol may be used in certain conditions, while calcitriol should be limited to specific disorders in which the active metabolite is not readily produced in vivo. Further studies are needed to investigate vitamin D effects in relation to the different recommended 25(OH)D levels and the efficacy of the different supplementary formulations in achieving biochemical and clinical outcomes within the multifaced skeletal and extraskeletal potential effects of vitamin D.
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Affiliation(s)
- Andrea Giustina
- Institute of Endocrine and Metabolic Sciences, San Raffaele Vita-Salute University and IRCCS Hospital, Milan 20132, Italy
| | - John P Bilezikian
- Department of Medicine, Vagelos College of Physicians and Surgeons, New York, NY 10032, USA
| | - Robert A Adler
- Richmond Veterans Affairs Medical Center and Virginia Commonwealth University, Richmond, VA 23284, USA
| | - Giuseppe Banfi
- IRCCS Galeazzi Sant'Ambrogio Hospital, Milano 20161, Italy
- San Raffaele Vita-Salute University, Milan 20132, Italy
| | - Daniel D Bikle
- Department of Medicine, University of California and San Francisco Veterans Affairs Health Center, San Francisco, CA 94121-1545, USA
- Department of Endocrinology, University of California and San Francisco Veterans Affairs Health Center, San Francisco, CA 94121-1545, USA
| | - Neil C Binkley
- School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI 53726, USA
| | | | - Roger Bouillon
- Laboratory of Clinical and Experimental Endocrinology, Department of Chronic Diseases, Metabolism and Ageing, KU Leuven, 3000 Leuven, Belgium
| | - Maria Luisa Brandi
- Italian Foundation for the Research on Bone Diseases (F.I.R.M.O.), Florence 50129, Italy
| | - Felipe F Casanueva
- Department of Medicine, Instituto de Investigación Sanitaria (IDIS), Complejo Hospitalario Universitario and CIBER de Fisiopatologia de la Obesidad y Nutricion (CIBERobn), Santiago de Compostela University, Santiago de Compostela 15706, Spain
| | - Luigi di Filippo
- Institute of Endocrine and Metabolic Sciences, San Raffaele Vita-Salute University and IRCCS Hospital, Milan 20132, Italy
| | - Lorenzo M Donini
- Department of Experimental Medicine, Sapienza University, Rome 00161, Italy
| | - Peter R Ebeling
- Department of Medicine, School of Clinical Sciences, Monash University, Clayton 3168, Australia
| | - Ghada El-Hajj Fuleihan
- Calcium Metabolism and Osteoporosis Program, WHO CC for Metabolic Bone Disorders, Division of Endocrinology, American University of Beirut, Beirut 1107 2020, Lebanon
| | - Angelo Fassio
- Rheumatology Unit, University of Verona, Verona 37129, Italy
| | - Stefano Frara
- Institute of Endocrine and Metabolic Sciences, San Raffaele Vita-Salute University and IRCCS Hospital, Milan 20132, Italy
| | - Glenville Jones
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario, ON K7L 3N6, Canada
| | - Claudio Marcocci
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa 56126, Italy
| | - Adrian R Martineau
- Faculty of Medicine and Dentistry, Queen Mary University of London, London E1 4NS, UK
| | - Salvatore Minisola
- Department of Clinical, Internal, Anesthesiologic and Cardiovascular Sciences, Sapienza University of Rome, Rome 00161, Italy
| | - Nicola Napoli
- Unit of Endocrinology and Diabetes Campus Bio-Medico, University of Rome, Rome 00128, Italy
| | - Massimo Procopio
- Division of Endocrinology, Diabetology and Metabolic Diseases, "Molinette" Hospital, University of Turin, Turin 10126, Italy
| | - René Rizzoli
- Geneva University Hospitals and Faculty of Medicine, Geneva 1205, Switzerland
| | - Anne L Schafer
- Department of Medicine, University of California and San Francisco Veterans Affairs Health Center, San Francisco, CA 94121-1545, USA
| | | | - Fabio Massimo Ulivieri
- Institute of Endocrine and Metabolic Sciences, San Raffaele Vita-Salute University and IRCCS Hospital, Milan 20132, Italy
| | - Jyrki K Virtanen
- Institute of Public Health and Clinical Nutrition, University of Eastern Finland, Kuopio FI-70211, Finland
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Jain SK, Justin Margret J, Abrams SA, Levine SN, Bhusal K. The Impact of Vitamin D and L-Cysteine Co-Supplementation on Upregulating Glutathione and Vitamin D-Metabolizing Genes and in the Treatment of Circulating 25-Hydroxy Vitamin D Deficiency. Nutrients 2024; 16:2004. [PMID: 38999752 PMCID: PMC11243476 DOI: 10.3390/nu16132004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2024] [Revised: 06/18/2024] [Accepted: 06/21/2024] [Indexed: 07/14/2024] Open
Abstract
Vitamin D receptors are expressed in many organs and tissues, which suggests that vitamin D (VD) affects physiological functions beyond its role in maintaining bone health. Deficiency or inadequacy of 25(OH)VD is widespread globally. Population studies demonstrate that a positive association exists between a high incidence of VD deficiency and a high incidence of chronic diseases, including dementia, diabetes, and heart disease. However, many subjects have difficulty achieving the required circulating levels of 25(OH)VD even after high-dose VD supplementation, and randomized controlled clinical trials have reported limited therapeutic success post-VD supplementation. Thus, there is a discordance between the benefits of VD supplementation and the prevention of chronic diseases in those with VD deficiency. Why this dissociation exists is currently under debate and is of significant public interest. This review discusses the downregulation of VD-metabolizing genes needed to convert consumed VD into 25(OH)VD to enable its metabolic action exhibited by subjects with metabolic syndrome, obesity, and other chronic diseases. Research findings indicate a positive correlation between the levels of 25(OH)VD and glutathione (GSH) in both healthy and diabetic individuals. Cell culture and animal experiments reveal a novel mechanism through which the status of GSH can positively impact the expression of VD metabolism genes. This review highlights that for better success, VD deficiency needs to be corrected at multiple levels: (i) VD supplements and/or VD-rich foods need to be consumed to provide adequate VD, and (ii) the body needs to be able to upregulate VD-metabolizing genes to convert VD into 25(OH)VD and then to 1,25(OH)2VD to enhance its metabolic action. This review outlines the association between 25(OH)VD deficiency/inadequacy and decreased GSH levels, highlighting the positive impact of combined VD+LC supplementation on upregulating GSH, VD-metabolizing genes, and VDR. These effects have the potential to enhance 25(OH)VD levels and its therapeutic efficacy.
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Affiliation(s)
- Sushil K. Jain
- Department of Pediatrics, Louisiana State University Health Sciences Center, Shreveport, LA 71103, USA;
| | - Jeffrey Justin Margret
- Department of Pediatrics, Louisiana State University Health Sciences Center, Shreveport, LA 71103, USA;
| | - Steven A. Abrams
- Department of Pediatrics and Dell Pediatric Research Institute, Dell Medical School at the University of Texas at Austin, Austin, TX 78723, USA;
| | - Steven N. Levine
- Department of Medicine, Louisiana State University Health Sciences Center, Shreveport, LA 71103, USA; (S.N.L.); (K.B.)
| | - Kamal Bhusal
- Department of Medicine, Louisiana State University Health Sciences Center, Shreveport, LA 71103, USA; (S.N.L.); (K.B.)
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Chen Z, Qiu X, Wang Q, Wu J, Li M, Niu W. Serum vitamin D and obesity among US adolescents, NHANES 2011-2018. Front Pediatr 2024; 12:1334139. [PMID: 38836246 PMCID: PMC11148364 DOI: 10.3389/fped.2024.1334139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 04/29/2024] [Indexed: 06/06/2024] Open
Abstract
Background and objectives Childhood obesity is highly prevalent worldwide. We aimed to assess whether serum 25-hydroxyvitamin D was associated with general/central obesity among US adolescents, and further to explore the mediatory impact of homeostasis model assessment of insulin resistance (HOMA-IR) on this association. Methods This study is cross-sectional in design. Study adolescents were enrolled from the National Health and Nutrition Examination Survey (NHANES), 2011-2018. Serum 25-hydroxyvitamin D categories associated with general (indexed by body mass index) and central (indexed by waist circumference to height ratio) obesity were regressed. The possible mediatory effect of HOMA-IR on this association was explored. The nonlinear and dose-response association was examined by restricted cubic spline (RCS) test. Results Total 2,696 adolescents were eligible for inclusion, and the mean age of all adolescents was 15.4 years. Overall, the percentage of general and central obesity was 38.0% and 38.6%, respectively. Compared with adolescents with sufficient vitamin D, adolescent with deficient and insufficient vitamin D intake were associated with general obesity and central obesity; fully-adjusted OR for general obesity was 1.602 (95% CI: 1.161-2.211) and 1.659 (1.385-1.986), and fully-adjusted OR for central obesity was 2.025 (1.445-2.837) and 1.557 (1.287-1.884), respectively, while there was no observable significance in adolescents with possibly harmful vitamin D. The proportion mediated by HOMA-IR was estimated to be 31.7% for global obesity and 50.3% for central obesity (both P < 0.05). More stratified analyses were presented, and identified that the association with general obesity was particularly present among Mexican American, while with central obesity among Non-Hispanic Black adolescents. Conclusions Our findings indicate that deficient or insufficient 25-hydroxyvitamin D concentrations were associated with the significant risk of general and central obesity among US adolescents, and approximately 30% and 50%, respectively, of these associations were mediated by HOMA-IR.
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Affiliation(s)
- Zisu Chen
- Department of Pediatrics, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - Xiaojin Qiu
- Department of Pediatrics, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - Qiong Wang
- Department of Pediatrics, China-Japan Friendship Hospital, Beijing, China
- Graduate School, Beijing University of Chinese Medicine, Beijing, China
| | - Jing Wu
- Center for Evidence-Based Medicine, Capital Institute of Pediatrics, Beijing, China
| | - Min Li
- Department of Pediatrics, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - Wenquan Niu
- Center for Evidence-Based Medicine, Capital Institute of Pediatrics, Beijing, China
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Du Q, Shao R, Wang W, Zhang H, Liao X, Wang Z, Yin Z, Ai Q, Mai K, Tang X, Wan M. Vitamin D3 Regulates Energy Homeostasis under Short-Term Fasting Condition in Zebrafish (Danio Rerio). Nutrients 2024; 16:1271. [PMID: 38732518 PMCID: PMC11085765 DOI: 10.3390/nu16091271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Revised: 04/05/2024] [Accepted: 04/19/2024] [Indexed: 05/13/2024] Open
Abstract
Vitamin D3 (VD3) is a steroid hormone that plays pivotal roles in pathophysiology, and 1,25(OH)2D3 is the most active form of VD3. In the current study, the crucial role of VD3 in maintaining energy homeostasis under short-term fasting conditions was investigated. Our results confirmed that glucose-depriving pathways were inhibited while glucose-producing pathways were strengthened in zebrafish after fasting for 24 or 48 h. Moreover, VD3 anabolism in zebrafish was significantly suppressed in a time-dependent manner under short-fasting conditions. After fasting for 24 or 48 h, zebrafish fed with VD3 displayed a higher gluconeogenesis level and lower glycolysis level in the liver, and the serum glucose was maintained at higher levels, compared to those fed without VD3. Additionally, VD3 augmented the expression of fatty acids (FAs) transporter cd36 and lipogenesis in the liver, while enhancing lipolysis in the dorsal muscle. Similar results were obtained in cyp2r1-/- zebrafish, in which VD3 metabolism is obstructed. Importantly, it was observed that VD3 induced the production of gut GLP-1, which is considered to possess a potent gluconeogenic function in zebrafish. Meanwhile, the gene expression of proprotein convertase subtilisin/kexin type 1 (pcsk1), a GLP-1 processing enzyme, was also induced in the intestine of short-term fasted zebrafish. Notably, gut microbiota and its metabolite acetate were involved in VD3-regulated pcsk1 expression and GLP-1 production under short-term fasting conditions. In summary, our study demonstrated that VD3 regulated GLP-1 production in zebrafish by influencing gut microbiota and its metabolite, contributing to energy homeostasis and ameliorating hypoglycemia under short-term fasting conditions.
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Affiliation(s)
- Qingyang Du
- Key Laboratory of Aquaculture Nutrition and Feed, Ministry of Agriculture & Key Laboratory of Mariculture, Ministry of Education, College of Fisheries, Ocean University of China, Qingdao 266003, China
| | - Rui Shao
- Key Laboratory of Aquaculture Nutrition and Feed, Ministry of Agriculture & Key Laboratory of Mariculture, Ministry of Education, College of Fisheries, Ocean University of China, Qingdao 266003, China
| | - Wentao Wang
- Key Laboratory of Aquaculture Nutrition and Feed, Ministry of Agriculture & Key Laboratory of Mariculture, Ministry of Education, College of Fisheries, Ocean University of China, Qingdao 266003, China
| | - Hui Zhang
- Key Laboratory of Aquaculture Nutrition and Feed, Ministry of Agriculture & Key Laboratory of Mariculture, Ministry of Education, College of Fisheries, Ocean University of China, Qingdao 266003, China
| | - Xinmeng Liao
- Key Laboratory of Aquaculture Nutrition and Feed, Ministry of Agriculture & Key Laboratory of Mariculture, Ministry of Education, College of Fisheries, Ocean University of China, Qingdao 266003, China
| | - Zhihao Wang
- Key Laboratory of Aquaculture Nutrition and Feed, Ministry of Agriculture & Key Laboratory of Mariculture, Ministry of Education, College of Fisheries, Ocean University of China, Qingdao 266003, China
| | - Zhan Yin
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Qinghui Ai
- Key Laboratory of Aquaculture Nutrition and Feed, Ministry of Agriculture & Key Laboratory of Mariculture, Ministry of Education, College of Fisheries, Ocean University of China, Qingdao 266003, China
| | - Kangsen Mai
- Key Laboratory of Aquaculture Nutrition and Feed, Ministry of Agriculture & Key Laboratory of Mariculture, Ministry of Education, College of Fisheries, Ocean University of China, Qingdao 266003, China
| | - Xiao Tang
- Division of Physiological Chemistry II, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, 17177 Stockholm, Sweden
| | - Min Wan
- Key Laboratory of Aquaculture Nutrition and Feed, Ministry of Agriculture & Key Laboratory of Mariculture, Ministry of Education, College of Fisheries, Ocean University of China, Qingdao 266003, China
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Bournot L, Payet T, Marcotorchino J, Awada M, Rouquet T, Breniere T, Couturier C, Astier J, Halimi C, Reboul E, Sicard F, Mounien L, Roux J, Bariohay B, Landrier JF. Vitamin D metabolism is altered during aging alone or combined with obesity in male mice. Biofactors 2024. [PMID: 38401051 DOI: 10.1002/biof.2047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 01/24/2024] [Indexed: 02/26/2024]
Abstract
Aging and obesity are associated with a decrease in plasma 25-hydroxyvitamin D (25(OH)D) levels. In the context of a growing aging population and the rising incidence of obesity, we hypothesized that aging process, either independently or in combination with obesity, could influence vitamin D (VD) metabolism, consequently resulting in the reduced 25(OH)D plasma concentrations. C57BL/6JRJ young (6 months) and old (23 months) mice fed with control (CD) or high fat diet (HF) were compared. Plasma and adipose concentration of cholecalciferol and 25(OH)D and mRNA expression of genes coding for the main VD actors were analyzed. Aging was associated with a decrease in plasma 25(OH)D levels, whereas combined effect of obesity and aging did not generate a cumulative effect on plasma 25(OH)D levels. The mRNA expression of Cyp27a1, Cyp3a11, and Cyp2j6 were decreased in the liver during aging. Together, these regulations could explain the reduced 25-hydroxylation. Interestingly, the lack of cumulative reduction of 25(OH)D in aged and obese mice could be related to the strong induction of Cyp2j6. In kidneys, a complex modulation of Cyp27b1 and Cyp24a1 could contribute to the reduced 25-hydroxylation in the liver. In white adipose tissue, an induction of Cyp2r1 was observed during aging and obesity, together with an increase of 25(OH)D quantity, suggesting an exacerbated storage that may participated to the reduced plasma 25(OH)D levels. These findings support the notion that aging alone or combined with obesity, induces regulation of VD metabolism in the organs, beyond the classical reduction of epidermal VD precursor, which may contribute to the decrease in 25(OH)D levels.
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Affiliation(s)
- Lorrine Bournot
- Aix-Marseille Université, C2VN, INRAE, INSERM, Marseille, France
- Biomeostasis, La Penne sur Huveaune, France
| | - Thomas Payet
- Aix-Marseille Université, C2VN, INRAE, INSERM, Marseille, France
| | | | | | | | - Thomas Breniere
- Aix-Marseille Université, C2VN, INRAE, INSERM, Marseille, France
| | | | - Julien Astier
- Aix-Marseille Université, C2VN, INRAE, INSERM, Marseille, France
| | - Charlotte Halimi
- Aix-Marseille Université, C2VN, INRAE, INSERM, Marseille, France
| | | | - Flavie Sicard
- Aix-Marseille Université, C2VN, INRAE, INSERM, Marseille, France
- PhenoMARS, CriBiom, Marseille, France
| | - Lourdes Mounien
- Aix-Marseille Université, C2VN, INRAE, INSERM, Marseille, France
- PhenoMARS, CriBiom, Marseille, France
| | | | | | - Jean François Landrier
- Aix-Marseille Université, C2VN, INRAE, INSERM, Marseille, France
- PhenoMARS, CriBiom, Marseille, France
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Ahmed A, Saleem MA, Saeed F, Afzaal M, Imran A, Akram S, Hussain M, Khan A, Al Jbawi E. A comprehensive review on the impact of calcium and vitamin D insufficiency and allied metabolic disorders in females. Food Sci Nutr 2023; 11:5004-5027. [PMID: 37701195 PMCID: PMC10494632 DOI: 10.1002/fsn3.3519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Revised: 06/01/2023] [Accepted: 06/01/2023] [Indexed: 09/14/2023] Open
Abstract
Calcium is imperative in maintaining a quality life, particularly during later ages. Its deficiency results in a wide range of metabolic disorders such as dental changes, cataracts, alterations in brain function, and osteoporosis. These deficiencies are more pronounced in females due to increased calcium turnover throughout their life cycle, especially during pregnancy and lactation. Vitamin D perform a central role in the metabolism of calcium. Recent scientific interventions have linked calcium with an array of metabolic disorders in females including hypertension, obesity, premenstrual dysphoric disorder, polycystic ovary syndrome (PCOS), multiple sclerosis, and breast cancer. This review encompasses these female metabolic disorders with special reference to calcium and vitamin D deficiency. This review article aims to present and elaborate on available data regarding the worldwide occurrence of insufficient calcium consumption in females and allied health risks, to provide a basis for formulating strategies and population-level scientific studies to adequately boost calcium intake and position where required.
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Affiliation(s)
- Aftab Ahmed
- Department of Nutritional SciencesGovernment College University FaisalabadFaisalabadPakistan
| | - Muhammad Awais Saleem
- Department of Nutritional SciencesGovernment College University FaisalabadFaisalabadPakistan
- Department of Human Nutrition and DieteticsMirpur University of Science and TechnologyMirpurPakistan
| | - Farhan Saeed
- Department of Food SciencesGovernment College University FaisalabadFaisalabadPakistan
| | - Muhammad Afzaal
- Department of Food SciencesGovernment College University FaisalabadFaisalabadPakistan
| | - Ali Imran
- Department of Food SciencesGovernment College University FaisalabadFaisalabadPakistan
| | - Sidra Akram
- Department of Nutritional SciencesGovernment College University FaisalabadFaisalabadPakistan
| | - Muzzamal Hussain
- Department of Food SciencesGovernment College University FaisalabadFaisalabadPakistan
| | - Aqsa Khan
- Department of Nutritional SciencesGovernment College University FaisalabadFaisalabadPakistan
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7
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Wimalawansa SJ. Controlling Chronic Diseases and Acute Infections with Vitamin D Sufficiency. Nutrients 2023; 15:3623. [PMID: 37630813 PMCID: PMC10459179 DOI: 10.3390/nu15163623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 08/11/2023] [Accepted: 08/15/2023] [Indexed: 08/27/2023] Open
Abstract
Apart from developmental disabilities, the prevalence of chronic diseases increases with age especially in those with co-morbidities: vitamin D deficiency plays a major role in it. Whether vitamin D deficiency initiates and/or aggravates chronic diseases or vice versa is unclear. It adversely affects all body systems but can be eliminated using proper doses of vitamin D supplementation and/or safe daily sun exposure. Maintaining the population serum 25(OH)D concentration above 40 ng/mL (i.e., sufficiency) ensures a sound immune system, minimizing symptomatic diseases and reducing infections and the prevalence of chronic diseases. This is the most cost-effective way to keep a population healthy and reduce healthcare costs. Vitamin D facilitates physiological functions, overcoming pathologies such as chronic inflammation and oxidative stress and maintaining broader immune functions. These are vital to overcoming chronic diseases and infections. Therefore, in addition to following essential public health and nutritional guidance, maintaining vitamin D sufficiency should be an integral part of better health, preventing acute and chronic diseases and minimize their complications. Those with severe vitamin D deficiency have the highest burdens of co-morbidities and are more vulnerable to developing complications and untimely deaths. Vitamin D adequacy improves innate and adaptive immune systems. It controls excessive inflammation and oxidative stress, generates antimicrobial peptides, and neutralizes antibodies via immune cells. Consequently, vitamin D sufficiency reduces infections and associated complications and deaths. Maintaining vitamin D sufficiency reduces chronic disease burden, illnesses, hospitalizations, and all-cause mortality. Vulnerable communities, such as ethnic minorities living in temperate countries, older people, those with co-morbidities, routine night workers, and institutionalized persons, have the highest prevalence of vitamin D deficiency-they would significantly benefit from vitamin D and targeted micronutrient supplementation. At least now, health departments, authorities, and health insurance companies should start assessing, prioritizing, and encouraging this economical, non-prescription, safe micronutrient to prevent and treat acute and chronic diseases. This approach will significantly reduce morbidity, mortality, and healthcare costs and ensure healthy aging.
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Affiliation(s)
- Sunil J Wimalawansa
- Department of Medicine, CardioMetabolic & Endocrine Institute, North Brunswick, NJ 08902, USA
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Wu W, Ren T, Cao X, Gao J. Hepatic transcriptome analysis reveals that elovl5 deletion promotes PUFA biosynthesis and deposition. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. PART D, GENOMICS & PROTEOMICS 2023; 46:101076. [PMID: 37080058 DOI: 10.1016/j.cbd.2023.101076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 04/02/2023] [Accepted: 04/02/2023] [Indexed: 04/22/2023]
Abstract
The safe and low-cost acquisition of polyunsaturated fatty acids (PUFAs) has become a research hotspot. Fatty acyl elongase 5 (Elovl5), a rate-limiting enzyme for fatty acid elongation, is principally in charge of extending C18 and C20 PUFA substrates. However, the role of elovl5 in regulating pathways and genes involved in PUFA synthesis remain largely unknown. Here, hepatic transcriptome analysis of wild-type and elovl5 knockout (elovl5-/-) zebrafish was performed to identify the potential regulatory targets related to PUFA deposition and synthesis. There were 1579 differentially expressed genes (DEGs), of which 787 had their expression levels increased while 792 had the opposite effect. Peroxisome proliferators-activated receptors (PPAR) signaling pathway was considerably enriched in DEGs, according to the KEGG analysis, in which fatp2, fabp7, and pparδ were engaged in PUFA absorption and deposition. Additionally, transcriptome analysis also revealed that cyp46a1 and cyp2r1 were implicated in the synthesis of bile acids and the metabolism of vitamin D, thus indirectly participating in PUFA biosynthesis and deposition. Finally, the DEGs, which improve PUFA level following elovl5 deletion, were verified through feeding experiment with two prepared diets soybean oil diet and linolenic acid oil diet. This study revealed potential regulatory targets that improve PUFA level after elovl5 deletion in teleosts.
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Affiliation(s)
- Wenpeng Wu
- College of Fisheries, Engineering Research Center of Green development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China
| | - Tianying Ren
- College of Fisheries, Engineering Research Center of Green development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China
| | - Xiaojuan Cao
- College of Fisheries, Engineering Research Center of Green development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China; College of Fisheries, Hubei Provincial Engineering Laboratory for Pond Aquaculture, Huazhong Agricultural University, Wuhan 430070, China
| | - Jian Gao
- College of Fisheries, Engineering Research Center of Green development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China; College of Fisheries, Hubei Provincial Engineering Laboratory for Pond Aquaculture, Huazhong Agricultural University, Wuhan 430070, China.
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9
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Bouillon R, Quesada Gomez JM. Comparison of calcifediol with vitamin D for prevention or cure of vitamin D deficiency. J Steroid Biochem Mol Biol 2023; 228:106248. [PMID: 36646151 DOI: 10.1016/j.jsbmb.2023.106248] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 01/12/2023] [Accepted: 01/12/2023] [Indexed: 01/15/2023]
Abstract
Vitamin D deficiency remains prevalent, with about 7% of the world's population living with severe vitamin D deficiency and about one third with mild deficiency. We compare the relative merits of calcifediol or 25-hydroxyvitamin D (25OHD) compared to vitamin D itself for supplementation as to prevent or cure vitamin D deficiency. The intestinal absorption of calcifediol is nearly 100% and thus higher than that of vitamin D itself. Moreover, calcifediol is absorbed by the intestinal cells and transported through the portal vein and thus immediately accessible to the circulation, while vitamin D is transported with chylomicrons through the lymph system. Therefore, in case of fat malabsorption or after bariatric surgery, calcifediol is much better absorbed in comparison with vitamin D itself. Serum 25OHD increases linearly with increasing doses of calcifediol, whereas serum 25OHD reaches a plateau when higher oral doses of vitamin D are used. Calcifediol, on a weight basis, is about 3 times more potent than vitamin D in subjects with mild vitamin D deficiency. This potency is even 6-8 times higher than vitamin D when baseline serum 25OHD is higher or when large doses are compared. In conclusion, calcifediol is an alternative option to correct vitamin D deficiency and may even be the preferred strategy in case of intestinal fat malabsorption, after bariatric surgery or in case of other conditions with suspected impaired 25-hydroxylase activity in the liver.
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Affiliation(s)
- Roger Bouillon
- Department of Chronic Diseases, Metabolism and Ageing, Laboratory of Clinical and Experimental Endocrinology, KU Leuven, Herestraat, ON 1/902, 3000 Leuven, Belgium.
| | - Jose Manuel Quesada Gomez
- Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC) & Unidad de Gestión Clínica (UGC) de Endocrinología y Nutrición, Hospital Universitario Reina Sofía, Universidad de Córdoba, Avda. Menéndez Pidal s/n, 14004 Córdoba, Spain.; CIBER de Fragilidad y Envejecimiento Saludable (CIBERFES), Madrid, Spain
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10
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Jodar E, Campusano C, de Jongh RT, Holick MF. Calcifediol: a review of its pharmacological characteristics and clinical use in correcting vitamin D deficiency. Eur J Nutr 2023; 62:1579-1597. [PMID: 36862209 PMCID: PMC9979899 DOI: 10.1007/s00394-023-03103-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 01/31/2023] [Indexed: 03/03/2023]
Abstract
BACKGROUND In addition to the role of vitamin D in bone mineralization, calcium and phosphate homeostasis, and skeletal health, evidence suggests an association between vitamin D deficiency and a wide range of chronic conditions. This is of clinical concern given the substantial global prevalence of vitamin D deficiency. Vitamin D deficiency has traditionally been treated with vitamin D3 (cholecalciferol) or vitamin D2 (ergocalciferol). Calcifediol (25-hydroxyvitamin D3) has recently become available more widely. METHODS By means of targeted literature searches of PubMed, this narrative review overviews the physiological functions and metabolic pathways of vitamin D, examines the differences between calcifediol and vitamin D3, and highlights clinical trials conducted with calcifediol in patients with bone disease or other conditions. RESULTS For supplemental use in the healthy population, calcifediol can be used at doses of up to 10 µg per day for children ≥ 11 years and adults and up to 5 µg/day in children 3-10 years. For therapeutic use of calcifediol under medical supervision, the dose, frequency and duration of treatment is determined according to serum 25(OH)D concentrations, condition, type of patient and comorbidities. Calcifediol differs pharmacokinetically from vitamin D3 in several ways. It is independent of hepatic 25-hydroxylation and thus is one step closer in the metabolic pathway to active vitamin D. At comparable doses to vitamin D3, calcifediol achieves target serum 25(OH)D concentrations more rapidly and in contrast to vitamin D3, it has a predictable and linear dose-response curve irrespective of baseline serum 25(OH)D concentrations. The intestinal absorption of calcifediol is relatively preserved in patients with fat malabsorption and it is more hydrophilic than vitamin D3 and thus is less prone to sequestration in adipose tissue. CONCLUSION Calcifediol is suitable for use in all patients with vitamin D deficiency and may be preferable to vitamin D3 for patients with obesity, liver disease, malabsorption and those who require a rapid increase in 25(OH)D concentrations.
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Affiliation(s)
- Esteban Jodar
- grid.119375.80000000121738416Department of Endocrinology and Nutrition, Quirón Salud Madrid and Ruber Juan Bravo University Hospitals, Universidad Europea de Madrid, Madrid, Spain
| | - Claudia Campusano
- grid.440627.30000 0004 0487 6659Department of Internal Medicine, Endocrine Section, Clínica Universidad de los Andes and School of Medicine, Universidad de los Andes, Santiago, Chile
| | - Renate T. de Jongh
- grid.12380.380000 0004 1754 9227Department of Endocrinology and Metabolism, Amsterdam UMC Location Vrije Universiteit Amsterdam, De Boelelaan 1117, Amsterdam, The Netherlands
| | - Michael F. Holick
- grid.189504.10000 0004 1936 7558Vitamin D, Skin, and Bone Research Laboratory, Section Endocrinology, Diabetes, Nutrition and Weight Management, Department of Medicine, Boston University School of Medicine, 85 E Newton St, M-1013, Boston, MA 02118 USA
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11
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Alonso N, Zelzer S, Eibinger G, Herrmann M. Vitamin D Metabolites: Analytical Challenges and Clinical Relevance. Calcif Tissue Int 2023; 112:158-177. [PMID: 35238975 PMCID: PMC8892115 DOI: 10.1007/s00223-022-00961-5] [Citation(s) in RCA: 29] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 02/16/2022] [Indexed: 01/25/2023]
Abstract
Recent research activities have provided new insights in vitamin D metabolism in various conditions. Furthermore, substantial progress has been made in the analysis of vitamin D metabolites and related biomarkers, such as vitamin D binding protein. Liquid chromatography tandem mass spectrometric (LC-MS/MS) methods are capable of accurately measuring multiple vitamin D metabolites in parallel. Nevertheless, only 25(OH)D and the biologically active form 1,25(OH)2D are routinely measured in clinical practice. While 25(OH)D remains the analyte of choice for the diagnosis of vitamin D deficiency, 1,25(OH)2D is only recommended in a few conditions with a dysregulated D metabolism. 24,25(OH)2D, free and bioavailable 25(OH)D, and the vitamin D metabolite ratio (VMR) have shown promising results, but technical pitfalls in their quantification, limited clinical data and the lack of reference values, impede their use in clinical practice. LC-MS/MS is the preferred method for the measurement of all vitamin D related analytes as it offers high sensitivity and specificity. In particular, 25(OH)D and 24,25(OH)2D can accurately be measured with this technology. When interpreted together, they seem to provide a functional measure of vitamin D metabolism beyond the analysis of 25(OH)D alone. The determination of VDBP, free and bioavailable 25(OH)D is compromised by unresolved analytical issues, lacking reference intervals and insufficient clinical data. Therefore, future research activities should focus on analytical standardization and exploration of their clinical value. This review provides an overview on established and new vitamin D related biomarkers including their pathophysiological role, preanalytical and analytical aspects, expected values, indications and influencing conditions.
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Affiliation(s)
- N Alonso
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Graz, Austria
| | - S Zelzer
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Graz, Austria
| | - G Eibinger
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Graz, Austria
| | - M Herrmann
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Graz, Austria.
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12
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Wimalawansa SJ. Rapidly Increasing Serum 25(OH)D Boosts the Immune System, against Infections-Sepsis and COVID-19. Nutrients 2022; 14:2997. [PMID: 35889955 PMCID: PMC9319502 DOI: 10.3390/nu14142997] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 05/31/2022] [Accepted: 06/16/2022] [Indexed: 12/24/2022] Open
Abstract
Vitamin D deficiency is a global public health problem, a pandemic that commonly affects the elderly and those with comorbidities such as obesity, diabetes, hypertension, respiratory disorders, recurrent infections, immune deficiency, and malignancies, as well as ethnic minorities living in temperate countries. The same groups were worst affected by COVID-19. Since vitamin D deficiency weakens the immune system, it increases the risk of infections, complications, and deaths, such as from sepsis and COVID-19. Deficiency can be remedied cost-effectively through targeted food fortification, supplementation, and/or daily safe sun exposure. Its endocrine functions are limited to mineral metabolism, musculoskeletal systems, specific cell membrane interactions, and parathyroid gland functions. Except for the rapid, endocrine, and cell membrane-based non-genomic functions, all other biological and physiological activities of vitamin D depend on the adequate intracellular synthesis of 1,25(OH)2D (calcitriol) in peripheral target cells via the genome. Calcitriol mediates autocrine (intracrine) and paracrine signalling in immune cells, which provides broader, protective immune functions crucial to overcoming infections. The synthesis of 1,25(OH)2D (calcitriol) in peripheral target cells is dependent on diffusion and endocytosis of D3 and 25(OH)D from the circulation into them, which requires maintenance of serum 25(OH)D concentration above 50 ng/mL. Therefore, in acute infections such as sepsis and respiratory infections like COVID-19, it is necessary to rapidly provide its precursors, D3 and 25(OH)D, through the circulation to generate adequate intracellular calcitriol. Immune defence is one of the crucial non-hormonal functions of vitamin D. A single oral (bolus) dose or divided upfront loading doses between 100,000 and 500,000 IU, using 50,000 IU vitamin D3 increase the serum 25(OH)D concentrations to a therapeutic level of above 50 ng/mL that lasts between two to three months. This takes three to five days to raise serum 25(OH)D. In contrast, a single oral dose of calcifediol (0.014 mg/kg body weight) can generate the needed 25(OH)D concentration within four hours. Considering both D3 and 25(OH)D enter immune cells for generating calcitriol, using the combination of D3 (medium-term) and calcifediol (immediate) is cost-effective and leads to the best clinical outcome. To maximise protection against infections, particularly to reduce COVID-19-associated complications and deaths, healthcare workers should advise patients on safe sun exposure, adequate vitamin D supplementation and balanced diets containing zinc, magnesium, and other micronutrients to support the immune system. Meanwhile, governments, the World Health Organisation, the Centers for Disease Control, and governments should consider similar recommendations to physicians and the public, change the outdated vitamin D and other micronutrient recommendations directed to their population, and organise targetted food fortification programs for the vulnerable groups. This article discusses a rational approach to maintaining a sustained serum 25(OH)D concentration above 50 ng/mL, necessary to attain a robust immune system for overcoming infections. Such would cost-effectively improve the population’s health and reduce healthcare costs. It also describes three cost-effective, straightforward protocols for achieving and sustaining therapeutic serum 25(OH)D concentrations above 50 ng/mL (>125 nmol/L) to keep the population healthy, reduce absenteeism, improve productivity, and lower healthcare costs.
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Affiliation(s)
- Sunil J Wimalawansa
- Endocrinology & Nutrition, Department of Medicine, Cardiometabolic & Endocrine Institute, North Brunswick, NJ 08873, USA
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13
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Elkhwanky MS, Kummu O, Hakkola J. Streptozotocin-induced Diabetes Represses Hepatic CYP2R1 Expression but Induces Vitamin D 25-Hydroxylation in Male Mice. Endocrinology 2022; 163:6582260. [PMID: 35524739 PMCID: PMC9155637 DOI: 10.1210/endocr/bqac060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Indexed: 11/19/2022]
Abstract
Vitamin D deficiency [ie, low plasma 25-hydroxyvitamin D (25-OH-D)] associates with the prevalence of metabolic diseases including type 1 diabetes; however, the molecular mechanisms are incompletely understood. Recent studies have indicated that both fasting and metabolic diseases suppress the cytochrome P450 (CYP) 2R1, the major hepatic vitamin D 25-hydroxylase. We specifically studied the effect of a mouse model of type 1 diabetes on the regulation of Cyp2r1 and vitamin D status. We show that streptozotocin-induced diabetes in mice suppresses the expression of the Cyp2r1 in the liver. While insulin therapy normalized the blood glucose levels in the diabetic mice, it did not rescue the diabetes-induced suppression of Cyp2r1. Similar regulation of Cyp2r1 was observed also in the kidney. Plasma 25-OH-D level was not decreased and was, in contrast, higher after 4 and 8 weeks of diabetes. Furthermore, the vitamin D 25-hydroxylase activity was increased in the livers of the diabetic mice, suggesting compensation of the Cyp2r1 repression by other vitamin D 25-hydroxylase enzymes. Cyp27b1, the vitamin D 1α-hydroxylase, expression in the kidney and the plasma 1α,25-dihydroxyvitamin D level were higher after 4 weeks of diabetes, while both were normalized after 13 weeks. In summary, these results indicate that in the mouse model of type 1 diabetes suppression of hepatic Cyp2r1 expression does not result in reduced hepatic vitamin D 25-hydroxylase activity and vitamin D deficiency. This may be due to induction of other vitamin D 25-hydroxylase enzymes in response to diabetes.
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Affiliation(s)
- Mahmoud-Sobhy Elkhwanky
- Research Unit of Biomedicine, Pharmacology and Toxicology, University of Oulu, Oulu, Finland
- Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland
- Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Outi Kummu
- Research Unit of Biomedicine, Pharmacology and Toxicology, University of Oulu, Oulu, Finland
- Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland
- Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Jukka Hakkola
- Correspondence: Jukka Hakkola, MD, PhD, Research Unit of Biomedicine, Pharmacology and Toxicology, University of Oulu, POB 5000, FI-90014 University of Oulu, Finland.
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14
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Thabet RH, Gomaa AA, Matalqah LM, Shalaby EM. Vitamin D: an essential adjuvant therapeutic agent in breast cancer. J Int Med Res 2022; 50:3000605221113800. [PMID: 35883275 PMCID: PMC9340350 DOI: 10.1177/03000605221113800] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Accepted: 06/07/2022] [Indexed: 11/20/2022] Open
Abstract
Low serum levels of vitamin D have been reported as a risk factor for breast cancer. This narrative review provides an update on the impact of vitamin D on hormone receptors, notably estrogen receptor subunits, and gives insights on possible therapeutic interventions to overcome breast cancer. In addition, evidence that supports the beneficial use of vitamin D as adjuvant treatment of breast cancer is summarized. Vitamin D deficiency is significantly widespread in patients with triple-negative tumors. Several studies have observed a possible modulatory effect of vitamin D or its analogues on the expression of different hormone receptors in breast cancer and increased sensitivity to tamoxifen. Vitamin D possesses anti-inflammatory and immunomodulatory effects in patients with breast cancer, and the mechanism of action of vitamin D in patients with breast cancer is discussed. In conclusion, vitamin D appears to have a beneficial role in the prevention and management of breast cancer, however, large-scale, randomized controlled trials are needed to confirm the effects of vitamin D in breast cancer prevention or treatment.
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Affiliation(s)
- Romany H Thabet
- Department of Pharmacology, Faculty of Medicine, Assiut
University
- Department of Basic Medical Sciences, Faculty of Medicine,
Yarmouk University, Irbid-Jordan
| | - Adel A Gomaa
- Department of Pharmacology, Faculty of Medicine, Assiut
University
- Center for Research on Management of Age-Related Diseases,
Assiut University, Assiut, Egypt
| | - Laila M Matalqah
- Department of Basic Medical Sciences, Faculty of Medicine,
Yarmouk University, Irbid-Jordan
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15
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Bennour I, Haroun N, Sicard F, Mounien L, Landrier JF. Vitamin D and Obesity/Adiposity—A Brief Overview of Recent Studies. Nutrients 2022; 14:nu14102049. [PMID: 35631190 PMCID: PMC9143180 DOI: 10.3390/nu14102049] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 05/10/2022] [Accepted: 05/11/2022] [Indexed: 12/12/2022] Open
Abstract
Observational studies classically find an inverse relationship between human plasma 25-hydroxyvitamin D concentration and obesity. However, interventional and genetic studies have failed to provide clear conclusions on the causal effect of vitamin D on obesity/adiposity. Likewise, vitamin D supplementation in obese rodents has mostly failed to improve obesity parameters, whereas several lines of evidence in rodents and prospective studies in humans point to a preventive effect of vitamin D supplementation on the onset of obesity. Recent studies investigating the impact of maternal vitamin D deficiency in women and in rodent models on adipose tissue biology programming in offspring further support a preventive metabolically driven effect of vitamin D sufficiency. The aim of this review is to summarize the state of the knowledge on the relationship between vitamin D and obesity/adiposity in humans and in rodents and the impact of maternal vitamin D deficiency on the metabolic trajectory of the offspring.
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Affiliation(s)
- Imene Bennour
- Aix-Marseille Université, C2VN, INRAE, INSERM, 13000 Marseille, France; (I.B.); (N.H.); (F.S.); (L.M.)
| | - Nicole Haroun
- Aix-Marseille Université, C2VN, INRAE, INSERM, 13000 Marseille, France; (I.B.); (N.H.); (F.S.); (L.M.)
| | - Flavie Sicard
- Aix-Marseille Université, C2VN, INRAE, INSERM, 13000 Marseille, France; (I.B.); (N.H.); (F.S.); (L.M.)
- PhenoMARS Aix-Marseille Technology Platform, CriBiom, 13000 Marseille, France
| | - Lourdes Mounien
- Aix-Marseille Université, C2VN, INRAE, INSERM, 13000 Marseille, France; (I.B.); (N.H.); (F.S.); (L.M.)
- PhenoMARS Aix-Marseille Technology Platform, CriBiom, 13000 Marseille, France
| | - Jean-François Landrier
- Aix-Marseille Université, C2VN, INRAE, INSERM, 13000 Marseille, France; (I.B.); (N.H.); (F.S.); (L.M.)
- PhenoMARS Aix-Marseille Technology Platform, CriBiom, 13000 Marseille, France
- Correspondence: ; Tel.: +33-4-9129-4275
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16
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Eder K, Grundmann SM. Vitamin D in dairy cows: metabolism, status and functions in the immune system. Arch Anim Nutr 2022; 76:1-33. [PMID: 35249422 DOI: 10.1080/1745039x.2021.2017747] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The function of vitamin D in calcium homoeostasis in dairy cows, such as in other vertebrates, is known for many years. In recent years, new and interesting, non-classical functions of vitamin D have been elucidated, including effects on the immune system. The major aim of this review is to provide an overview of effects of vitamin D or its metabolites on the immune system in dairy cows. The first part of the review provides an overview of vitamin D metabolism, with particular reference to the role of various proteins (25- and 1-hydroxylases, vitamin D binding protein, vitamin D receptor) in vitamin D signalling. The second part deals with the role of the concentration of 25-hydroxyvitamin D [25(OH)D] in plasma as an indicator of the vitamin D status in dairy cows, and its dependence on sunlight exposure and dietary vitamin D supplementation. In this part also the "free hormone hypothesis" is discussed, indicating that the concentration of free 25(OH)D might be a more valid indicator of the vitamin D status than the concentration of total 25(OH)D. The third part deals with classical and the non-classical functions of vitamin D. Among the non-classical functions which are based on an autocrine vitamin D signalling, particular reference is given to the effects of vitamin D and vitamin D metabolites on the immune system in bovine immune cells and in dairy cows. Recent findings provide some indication that vitamin D or its metabolite 25(OH)D could enhance the immune function in dairy cows and be useful for the prevention and therapy of mastitis. However, the number of studies reported so far in this respect is very limited. Thus, much more research is required to yield clear concepts for an optimised usage of vitamin D to improve the immune system and prevent infectious diseases in dairy cows.
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Affiliation(s)
- Klaus Eder
- Institute of Animal Nutrition and Nutrition Physiology, Justus-Liebig-Universität Giessen, Giessen, Germany
| | - Sarah M Grundmann
- Institute of Animal Nutrition and Nutrition Physiology, Justus-Liebig-Universität Giessen, Giessen, Germany
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17
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Danza K, Porcelli L, De Summa S, Di Fonte R, Pilato B, Lacalamita R, Serratì S, Azzariti A, Tommasi S. The ERRα-VDR axis promotes calcitriol degradation and estrogen signaling in breast cancer cells, while VDR-CYP24A1-ERRα overexpression correlates with poor prognosis in patients with basal-like breast cancer. Mol Oncol 2022; 16:904-920. [PMID: 34003583 PMCID: PMC8847991 DOI: 10.1002/1878-0261.13013] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 04/14/2021] [Accepted: 05/14/2021] [Indexed: 11/12/2022] Open
Abstract
Vitamin D is used to reduce cancer risk and improve the outcome of cancer patients, but the vitamin D receptor (VDR; also known as the calcitriol receptor) pathway needs to be functionally intact to ensure the biological effects of circulating calcitriol, the active form of vitamin D. Besides estrogen receptor alpha (ERα), estrogen-related receptor alpha (ERRα) has also been shown to interfere with the VDR pathway, but its role in the antitumor and transactivation activity of calcitriol is completely unknown in breast cancer (BC). We observed that ERRα functionally supported the proliferation of BC cell lines and acted as a calcitriol-induced regulator of VDR. As such, ERRα deregulated the calcitriol-VDR transcription by enhancing the expression of CYP24A1 as well as of both ERα and aromatase (CYP19A1) in calcitriol-treated cells. ERRα knockdown limited the effect of calcitriol by reducing calcitriol-induced G0/G1 phase cell cycle arrest and by affecting the expression of cyclin D1 and p21/Waf. The interactome analysis suggested that Peroxisome Proliferator-Activated Receptor Gamma Coactivator 1-α (PGC-1α) and Proline-, glutamic acid-, and leucine-rich protein 1 (PELP1) are key players in the genomic actions of the calcitriol-VDR-ERRα axis. Evaluation of patient outcomes in The Cancer Genome Atlas (TCGA) dataset showed the translational significance of the biological effects of the VDR-ERRα axis, highlighting that VDR, CYP24A1, and ERRα overexpression correlates with poor prognosis in basal-like BC.
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Affiliation(s)
- Katia Danza
- Molecular Diagnostics and Pharmacogenetics UnitIRCCS Istituto Tumori Giovanni Paolo IIBariItaly
| | - Letizia Porcelli
- Laboratory of Experimental PharmacologyIRCCS Istituto Tumori Giovanni Paolo IIBariItaly
| | - Simona De Summa
- Molecular Diagnostics and Pharmacogenetics UnitIRCCS Istituto Tumori Giovanni Paolo IIBariItaly
| | - Roberta Di Fonte
- Laboratory of Experimental PharmacologyIRCCS Istituto Tumori Giovanni Paolo IIBariItaly
| | - Brunella Pilato
- Molecular Diagnostics and Pharmacogenetics UnitIRCCS Istituto Tumori Giovanni Paolo IIBariItaly
| | - Rosanna Lacalamita
- Molecular Diagnostics and Pharmacogenetics UnitIRCCS Istituto Tumori Giovanni Paolo IIBariItaly
| | - Simona Serratì
- Laboratory of NanotechnologyIRCCS Istituto Tumori Giovanni Paolo IIBariItaly
| | - Amalia Azzariti
- Laboratory of Experimental PharmacologyIRCCS Istituto Tumori Giovanni Paolo IIBariItaly
| | - Stefania Tommasi
- Molecular Diagnostics and Pharmacogenetics UnitIRCCS Istituto Tumori Giovanni Paolo IIBariItaly
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18
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Bouillon R, Manousaki D, Rosen C, Trajanoska K, Rivadeneira F, Richards JB. The health effects of vitamin D supplementation: evidence from human studies. Nat Rev Endocrinol 2022; 18:96-110. [PMID: 34815552 PMCID: PMC8609267 DOI: 10.1038/s41574-021-00593-z] [Citation(s) in RCA: 184] [Impact Index Per Article: 92.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/25/2021] [Indexed: 12/16/2022]
Abstract
Vitamin D supplementation can prevent and cure nutritional rickets in infants and children. Preclinical and observational data suggest that the vitamin D endocrine system has a wide spectrum of skeletal and extra-skeletal activities. There is consensus that severe vitamin D deficiency (serum 25-hydroxyvitamin D (25OHD) concentration <30 nmol/l) should be corrected, whereas most guidelines recommend serum 25OHD concentrations of >50 nmol/l for optimal bone health in older adults. However, the causal link between vitamin D and many extra-skeletal outcomes remains unclear. The VITAL, ViDA and D2d randomized clinical trials (combined number of participants >30,000) indicated that vitamin D supplementation of vitamin D-replete adults (baseline serum 25OHD >50 nmol/l) does not prevent cancer, cardiovascular events, falls or progression to type 2 diabetes mellitus. Post hoc analysis has suggested some extra-skeletal benefits for individuals with vitamin D deficiency. Over 60 Mendelian randomization studies, designed to minimize bias from confounding, have evaluated the consequences of lifelong genetically lowered serum 25OHD concentrations on various outcomes and most studies have found null effects. Four Mendelian randomization studies found an increased risk of multiple sclerosis in individuals with genetically lowered serum 25OHD concentrations. In conclusion, supplementation of vitamin D-replete individuals does not provide demonstrable health benefits. This conclusion does not contradict older guidelines that severe vitamin D deficiency should be prevented or corrected.
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Affiliation(s)
- Roger Bouillon
- Clinical and Experimental Endocrinology, Department of Chronic Diseases and Metabolism, KU Leuven, Leuven, Belgium.
| | - Despoina Manousaki
- Research Center of the Sainte-Justine University Hospital, University of Montreal, Montreal, Quebec, Canada
| | - Cliff Rosen
- Maine Medical Center Research Institute, Scarborough, ME, USA
| | - Katerina Trajanoska
- Department of Internal Medicine, Erasmus MC University Medical Center, Rotterdam, Netherlands
| | - Fernando Rivadeneira
- Translational Skeletal Genomics, Department of Internal Medicine, Erasmus MC University Medical Center, Rotterdam, Netherlands
| | - J Brent Richards
- Centre for Clinical Epidemiology, Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, Quebec, Canada
- Departments of Medicine, Human Genetics, Epidemiology and Biostatistics, McGill University, Montreal, Quebec, Canada
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19
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Holt R, Petersen JH, Dinsdale E, Knop FK, Juul A, Jørgensen N, Blomberg Jensen M. Vitamin D Supplementation Improves Fasting Insulin Levels and HDL Cholesterol in Infertile Men. J Clin Endocrinol Metab 2022; 107:98-108. [PMID: 34508607 DOI: 10.1210/clinem/dgab667] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Indexed: 11/19/2022]
Abstract
CONTEXT Vitamin D has been linked with glucose and lipid metabolism. Men with impaired gonadal function have a higher risk of metabolic syndrome and mortality, and vitamin D status may be a reversible modulator. OBJECTIVE This work aimed to determine the effect of daily vitamin D and calcium supplementation for 150 days on glucose and lipid homeostasis in infertile men. METHODS A single-center, double-blinded, randomized clinical trial (NCT01304927) was conducted. A total of 307 infertile men were randomly assigned (1:1) to a single dose of 300 000 IU cholecalciferol followed by 1400 IU cholecalciferol + 500 mg of calcium daily (n = 151) or placebo (n = 156) for 150 days. Reported metabolic parameters including fasting plasma glucose, glycated hemoglobin A1c, fasting serum insulin, homeostatic model assessment of insulin resistance (HOMA-IR), fasting plasma cholesterols, and triglycerides were secondary end points. The primary end point semen quality has previously been reported. RESULTS Men receiving vitamin D supplementation improved their vitamin D status, whereas vitamin D status was aggravated in the placebo group characterized by higher serum parathyroid hormone. At the end of the trial, men receiving vitamin D supplementation had 13% lower fasting serum insulin concentrations compared with the placebo-treated group (65 vs 74 pmol/L, P = .018) and 19% lower HOMA-IR (2.2 vs 2.7, P = .025). Moreover, men in the vitamin D group had higher high-density lipoprotein (HDL) cholesterol levels (1.38 vs 1.32 mmol/L, P = .008) compared with the placebo group. CONCLUSION High-dose vitamin D supplementation has beneficial effects on glucose homeostasis and HDL cholesterol levels in infertile men.
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Affiliation(s)
- Rune Holt
- Group of Skeletal, Mineral and Gonadal Endocrinology, Department of Growth and Reproduction, Rigshospitalet, Copenhagen, 2100, Denmark
| | - Jørgen Holm Petersen
- Department of Growth and Reproduction and International Center for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, 2100, Denmark
- Section of Biostatistics, Faculty of Health Sciences, University of Copenhagen, 1014, Denmark
| | - Elsa Dinsdale
- Group of Skeletal, Mineral and Gonadal Endocrinology, Department of Growth and Reproduction, Rigshospitalet, Copenhagen, 2100, Denmark
| | - Filip Krag Knop
- Center for Clinical Metabolic Research, Gentofte Hospital, University of Copenhagen, Hellerup, 2900, Denmark
- Steno Diabetes Center Copenhagen, Gentofte, 2820, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, 2200, Denmark
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, 2200, Denmark
| | - Anders Juul
- Department of Growth and Reproduction and International Center for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, 2100, Denmark
| | - Niels Jørgensen
- Department of Growth and Reproduction and International Center for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, 2100, Denmark
| | - Martin Blomberg Jensen
- Group of Skeletal, Mineral and Gonadal Endocrinology, Department of Growth and Reproduction, Rigshospitalet, Copenhagen, 2100, Denmark
- Division of Bone and Mineral Research, Harvard School of Dental Medicine/Harvard Medical School, Harvard University, Boston, Massachusetts 02115, USA
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20
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Knuth MM, Stutts WL, Ritter MM, Garrard KP, Kullman SW. Vitamin D deficiency promotes accumulation of bioactive lipids and increased endocannabinoid tone in zebrafish. J Lipid Res 2021; 62:100142. [PMID: 34673019 PMCID: PMC8604674 DOI: 10.1016/j.jlr.2021.100142] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 10/09/2021] [Accepted: 10/11/2021] [Indexed: 12/29/2022] Open
Abstract
Vitamin D is well known for its traditional role in bone mineral homeostasis; however, recent evidence suggests that vitamin D also plays a significant role in metabolic control. This study served to investigate putative linkages between vitamin D deficiency (VDD) and metabolic disruption of bioactive lipids by MS imaging. Our approach employed infrared-matrix-assisted laser desorption electrospray ionization MS imaging for lipid metabolite profiling in 6-month-old zebrafish fed either a VDD or a vitamin D-sufficient (VDS) diet. Using a lipidomics pipeline, we found that VDD zebrafish had a greater abundance of bioactive lipids (N-acyls, endocannabinoids [ECs], diacylglycerols/triacylglycerols, bile acids/bile alcohols, and vitamin D derivatives) suggestive of increased EC tone compared with VDS zebrafish. Tandem MS was performed on several differentially expressed metabolites with sufficient ion abundances to aid in structural elucidation and provide additional support for MS annotations. To confirm activation of the EC pathways, we subsequently examined expression of genes involved in EC biosynthesis, metabolism, and receptor signaling in adipose tissue and liver from VDD and VDS zebrafish. Gene expression changes were congruent with increased EC tone, with VDD zebrafish demonstrating increased synthesis and metabolism of anandamide compared with VDS zebrafish. Taken together, our data suggest that VDD may promote accumulation of bioactive lipids and increased EC tone in zebrafish.
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Affiliation(s)
- Megan M Knuth
- Lineberger Comprehensive Cancer Center, University of North Carolina School of Medicine at Chapel Hill, Chapel Hill, NC 27514, USA; Department of Genetics, University of North Carolina School of Medicine at Chapel Hill, Chapel Hill, NC 27514, USA; Toxicology Program, Department of Biological Sciences, North Carolina State University, Raleigh, NC 27606, USA.
| | - Whitney L Stutts
- Molecular Education, Technology and Research Innovation Center (METRIC), North Carolina State University, Raleigh, NC 27606, USA
| | - Morgan M Ritter
- Toxicology Program, Department of Biological Sciences, North Carolina State University, Raleigh, NC 27606, USA
| | - Kenneth P Garrard
- Molecular Education, Technology and Research Innovation Center (METRIC), North Carolina State University, Raleigh, NC 27606, USA; FTMS Laboratory for Human Health Research and Department of Chemistry, North Carolina State University, Raleigh, NC 27607, USA; Precision Engineering Consortium, Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC 27695, USA
| | - Seth W Kullman
- Toxicology Program, Department of Biological Sciences, North Carolina State University, Raleigh, NC 27606, USA; Center for Human Health and the Environment, North Carolina State University, Raleigh, NC 27606, USA
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21
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Ramirez-Sandoval JC, Castillos-Ávalos VJ, Paz-Cortés A, Santillan-Ceron A, Hernandez-Jimenez S, Mehta R, Correa-Rotter R. Very Low Vitamin D Levels are a Strong Independent Predictor of Mortality in Hospitalized Patients with Severe COVID-19. Arch Med Res 2021; 53:215-222. [PMID: 34711432 PMCID: PMC8516726 DOI: 10.1016/j.arcmed.2021.09.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 08/31/2021] [Accepted: 09/30/2021] [Indexed: 12/14/2022]
Abstract
Background There is controversy regarding the association between hypovitaminosis D and COVID-19 outcomes. Aim of the study We assessed the association between 25-hydroxyvitamin D levels and COVID-19 outcomes in hospitalized subjects with severe SARS-CoV-2 infection. Methods Retrospective cohort study. Serum 25-hydroxyvitamin D levels of subjects with severe COVID-19 pneumonia were measured at hospital admission, between March 17th, 2020, and March 1st, 2021. Results Out of 2,908 patients, 571 (19.6%) had vitamin D deficiency (defined as a serum 25-hydroxyvitamin D level <12.5 ng/mL [<31.25 nmol/L]), and 1069 (36.7%) had levels between 12.5 ng/mL (31.25 nmol/L) and 20 ng/mL 850 nmol/L). Compared to subjects without vitamin D deficiency, those with 25-hydroxyvitamin D level <12.5 ng/mL had higher rates of in-hospital mortality at 30 d (28.0 vs. 17.3%; p <0.001), global mortality (31.9 vs. 20.8%; p <0.001), mechanical ventilation requirement (23.8 vs. 17.2%; p <0.001), and significantly longer hospital stay (median [interquartile range] of 9 [6–17 d] vs. 7 [5–12 d], p <0.001). In the unadjusted analysis, the risk of in-hospital death was greater for patients with vitamin D deficiency (HR 1.43; 95% CI, 1.20–1.70; p <0.001). After adjusting for confounders, the risk of in-hospital death within 30 d remained significantly greater in patients with vitamin D deficiency (HR 1.46; 95% CI, 1.21–1.76; p <0.001). The risk was reduced but remained significant with 25-hydroxyvitamin D levels between 12.5 ng/mL and 20 ng/mL (HR 1.31; 95% CI 1.10–1.55, p = 0.02). In comparison with other clinical biomarkers, vitamin D deficiency was an independent predictive marker of in-hospital mortality after adjusting for confounders. Conclusion Very low 25-hydroxyvitamin D levels measured at hospital admission were significantly associated with in-hospital mortality and are a useful prognostic biomarker in severe COVID-19 patients.
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Affiliation(s)
- Juan C Ramirez-Sandoval
- Departamento de Nefrología y Metabolismo Mineral, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Ciudad de México, México.
| | - Valeria Jocelyne Castillos-Ávalos
- Departamento de Nefrología y Metabolismo Mineral, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Ciudad de México, México
| | - Armando Paz-Cortés
- Departamento de Nefrología y Metabolismo Mineral, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Ciudad de México, México
| | - Airy Santillan-Ceron
- Departamento de Nefrología y Metabolismo Mineral, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Ciudad de México, México
| | - Sergio Hernandez-Jimenez
- Centro de Atención Integral al Paciente con Diabetes, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Ciudad de México, México
| | - Roopa Mehta
- Departamento de Endocrinología y Metabolismo, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Ciudad de México, México
| | - Ricardo Correa-Rotter
- Departamento de Nefrología y Metabolismo Mineral, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Ciudad de México, México
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22
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Zhu T, Zhao J, Zhuo S, Hu Z, Ouyang S, Wunier, Yu S, Chen Y, Li Y, Le Y. High Fat Diet and High Cholesterol Diet Reduce Hepatic Vitamin D-25-Hydroxylase Expression and Serum 25-Hydroxyvitamin D 3 Level through Elevating Circulating Cholesterol, Glucose, and Insulin Levels. Mol Nutr Food Res 2021; 65:e2100220. [PMID: 34448353 DOI: 10.1002/mnfr.202100220] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 08/04/2021] [Indexed: 12/20/2022]
Abstract
SCOPE Low circulating 25-hydroxyvitamin D (25(OH)D) levels associate with obesity, diabetes, and hyperlipidemia, but the underlying mechanisms remain uncertain. As energy-dense diet contributes to these disorders, this study investigates whether diet could impair vitamin D metabolism. METHODS AND RESULTS Compared with control chow-fed mice, high fat diet (HFD)-fed mice show lower serum 25(OH)D3 and 1,25(OH)2 D3 levels, lower hepatic vitamin D 25-hydroxylase Cyp2r1 expression but comparable renal vitamin D metabolic enzymes expression. Time course studies show that after HFD feeding, the serum concentrations of cholesterol, triglycerides, fatty acids, glucose, and insulin elevate sequentially and before the reduction of hepatic Cyp2r1 expression and serum 25(OH)D3 levels. Hepatic Cyp2r1 expression also reduces after consuming high fat and high sucrose diet. After high cholesterol diet feeding, serum total cholesterol rises and hepatic Cyp2r1 expression decreases ahead of the reduction of serum 25(OH)D3 . In vitro studies demonstrate that high concentrations of cholesterol, glucose, and insulin significantly inhibit Cyp2r1expression in primary murine hepatocytes. Further studies show that dietary restriction in HFD-fed mice ameliorates hypercholesterolemia, hyperglycemia, and hypertriglyceridemia, and elevates hepatic Cyp2r1 expression and serum 25(OH)D3 level. CONCLUSION These findings suggest that diet-induced elevation of circulating cholesterol, glucose, and insulin reduces serum 25(OH)D3 level through suppressing hepatic Cyp2r1 expression.
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Affiliation(s)
- Tengfei Zhu
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, China.,School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Jingyu Zhao
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, China
| | - Shu Zhuo
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, China
| | - Zhimin Hu
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, China
| | - Shuyu Ouyang
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, China
| | - Wunier
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, China
| | - Shuting Yu
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, China
| | - Yan Chen
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, China
| | - Yu Li
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, China
| | - Yingying Le
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, China.,Key Laboratory of Food Safety Risk Assessment, Ministry of Health, Beijing, 100021, China
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23
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Żychowska M, Rola R, Borkowska A, Tomczyk M, Kortas J, Anczykowska K, Pilis K, Kowalski K, Pilch W, Antosiewicz J. Fasting and Exercise Induce Changes in Serum Vitamin D Metabolites in Healthy Men. Nutrients 2021; 13:nu13061963. [PMID: 34201027 PMCID: PMC8226906 DOI: 10.3390/nu13061963] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 05/29/2021] [Accepted: 06/04/2021] [Indexed: 01/19/2023] Open
Abstract
Background: Vitamin D plays pleiotropic roles in the body and hence, changes in its metabolism and distribution during starvation could play an important role in the adaptive response to famine. We aimed to identify the responses of some vitamin D metabolites to 8 d of fasting and exercise. Methods: A repeated-measures design was implemented, in which 14 male volunteers fasted for 8 d and performed an exercise test before and after fasting. Serum samples were collected on day 1 after night fasting and after 8 d of complete food restriction, before and 1 h and 3 h after exercise. Results: After 8 d of fasting, compared with baseline values, serum 24,25(OH)2D3 and 3-epi-25(OH)D3 levels significantly increased; those of 25(OH)D3 and 1,25(OH)2D3 were unaffected; and those of 25(OH)D2 decreased. Exercise on the first day of fasting induced an increase in serum 3-epi-25(OH)D3 levels, while exercise performed after 8 d of fasting induced an increase in 25(OH)D3, 24,25(OH)2D3, 25(OH)D2, and 3-epi-25(OH)D3 levels. Conclusion: Increases in 24,25(OH)2D3 and 3-epi-25(OH)D3 levels imply that fasting stimulates vitamin D metabolism. The effects of exercise on serum vitamin D metabolites, which are most pronounced after fasting and in subjects with serum 25(OH)D3 above 25 ng/mL, support the notion that fasting and exercise augment vitamin D metabolism.
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Affiliation(s)
- Małgorzata Żychowska
- Department of Sport, Faculty of Physical Education, Kazimierz Wielki University, 85-091 Bydgoszcz, Poland;
| | - Rafał Rola
- Masdiag Sp. z o.o. Company, 01-882 Warsaw, Poland; (R.R.); (K.K.)
- Faculty of Chemistry, Nicolaus Copernicus University, 87-100 Torun, Poland
| | - Andżelika Borkowska
- Department of Bioenergetics and Physiology of Exercise, Medical University of Gdansk, 80-210 Gdansk, Poland;
| | - Maja Tomczyk
- Department of Bioenergetics and Nutrition, Faculty of Physical Education, Gdansk University of Physical Education and Sport, 80-336 Gdansk, Poland;
| | - Jakub Kortas
- Department of Health and Life Sciences, Gdansk University of Physical Education and Sport, 80-336 Gdansk, Poland;
| | - Katarzyna Anczykowska
- Department of Biochemistry, Faculty of Physical Education, Gdansk University of Physical Education and Sport, 80-336 Gdansk, Poland;
| | - Karol Pilis
- Department of Health Sciences, Jan Dlugosz University, 42-200 Czestochowa, Poland;
| | - Konrad Kowalski
- Masdiag Sp. z o.o. Company, 01-882 Warsaw, Poland; (R.R.); (K.K.)
| | - Wanda Pilch
- Institute for Basics Sciences, Faculty of Physiotherapy, University of Physical Education in Krakow, 31-571 Krakow, Poland;
| | - Jędrzej Antosiewicz
- Department of Bioenergetics and Physiology of Exercise, Medical University of Gdansk, 80-210 Gdansk, Poland;
- Correspondence: ; Tel.: +48-58-3491456
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24
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Spiers JG, Steiger N, Khadka A, Juliani J, Hill AF, Lavidis NA, Anderson ST, Cortina Chen HJ. Repeated acute stress modulates hepatic inflammation and markers of macrophage polarisation in the rat. Biochimie 2021; 180:30-42. [PMID: 33122103 DOI: 10.1016/j.biochi.2020.10.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 09/29/2020] [Accepted: 10/24/2020] [Indexed: 12/24/2022]
Abstract
Bidirectional communication between the neuroendocrine stress and immune systems permits classically anti-inflammatory glucocorticoids to exert pro-inflammatory effects in specific cells and tissues. Liver macrophages/Kupffer cells play a crucial role in initiating inflammatory cascades mediated by the release of pro-inflammatory cytokines following tissue injury. However, the effects of repeated acute psychological stress on hepatic inflammatory phenotype and macrophage activation state remains poorly understood. We have utilised a model of repeated acute stress in rodents to observe the changes in hepatic inflammatory phenotype, including anti-inflammatory vitamin D status, in addition to examining markers of classically and alternatively-activated macrophages. Male Wistar rats were subjected to control conditions or 6 h of restraint stress applied for 1 or 3 days (n = 8 per group) after which plasma concentrations of stress hormone, enzymes associated with liver damage, and vitamin D status were examined, in addition to hepatic expression of pro- and anti-inflammatory markers. Stress increased glucocorticoids and active vitamin D levels in addition to expression of glucocorticoid alpha/beta receptor, whilst changes in circulating hepatic enzymes indicated sustained liver damage. A pro-inflammatory response was observed in liver tissues following stress, and inducible nitric oxide synthase being observed within hepatic macrophage/Kupffer cells. Together, this suggests that stress preferentially induces a pro-inflammatory response in the liver.
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Affiliation(s)
- Jereme G Spiers
- School of Biomedical Sciences, The University of Queensland, St Lucia, Queensland, 4072, Australia; Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University, Bundoora, Victoria, 3083, Australia.
| | - Natasha Steiger
- School of Biomedical Sciences, The University of Queensland, St Lucia, Queensland, 4072, Australia
| | - Arun Khadka
- Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University, Bundoora, Victoria, 3083, Australia
| | - Juliani Juliani
- Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University, Bundoora, Victoria, 3083, Australia
| | - Andrew F Hill
- Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University, Bundoora, Victoria, 3083, Australia
| | - Nickolas A Lavidis
- School of Biomedical Sciences, The University of Queensland, St Lucia, Queensland, 4072, Australia
| | - Stephen T Anderson
- School of Biomedical Sciences, The University of Queensland, St Lucia, Queensland, 4072, Australia
| | - Hsiao-Jou Cortina Chen
- School of Biomedical Sciences, The University of Queensland, St Lucia, Queensland, 4072, Australia; WT-MRC Institute of Metabolic Science, University of Cambridge, Cambridge, CB2 0QQ, United Kingdom.
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25
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Lopez AG, Kerlan V, Desailloud R. Non-classical effects of vitamin D: Non-bone effects of vitamin D. ANNALES D'ENDOCRINOLOGIE 2020; 82:43-51. [PMID: 33279474 DOI: 10.1016/j.ando.2020.12.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Accepted: 12/01/2020] [Indexed: 12/14/2022]
Abstract
Our understanding of vitamin D has improved considerably in recent years. The role of vitamin D in preventing osteoporotic fractures is now well-established. However, an important controversy has emerged in the last decade concerning the effects of the active form of vitamin D (1,25-dihydroxy-vitamin D) on tissues other than bone (non-classical effects). The demonstration that the vitamin D receptor (VDR) is ubiquitously, expressed combined with increasing observational data supporting a relationship between the level of 25-hydroxy-vitamin D in the serum and chronic metabolic disorders, cardiovascular disease and neoplasms, have led to its redefinition as a steroid hormone and the proposal of its use in preventing and/or treating those diseases. This article is an update on the different non-bone or non-classical effects of "vitamin-hormone D", and its potential preventive or therapeutic role in certain diseases, however, this review is not exhaustive. The different modalities of substitution or supplementation proposed in France by the Groupe de Recherche et d'Information sur les Ostéoporoses (GRIO) are also summarised.
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Affiliation(s)
- Antoine-Guy Lopez
- Department of Endocrinology, Diabetes and Metabolic Diseases, Rouen University Hospital, Rouen, France.
| | - Véronique Kerlan
- Department of Endocrinology, Diabetes and Metabolic Diseases, Hôpital de la Cavale Blanche, Brest, France
| | - Rachel Desailloud
- Department of Endocrinology, Diabetes and Nutrition, and PériTox, UMR-I 01 INERIS, University Picardie Jules Verne (UPJV), Amiens, France
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26
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Giustina A, Bouillon R, Binkley N, Sempos C, Adler RA, Bollerslev J, Dawson-Hughes B, Ebeling PR, Feldman D, Heijboer A, Jones G, Kovacs CS, Lazaretti-Castro M, Lips P, Marcocci C, Minisola S, Napoli N, Rizzoli R, Scragg R, White JH, Formenti AM, Bilezikian JP. Controversies in Vitamin D: A Statement From the Third International Conference. JBMR Plus 2020; 4:e10417. [PMID: 33354643 PMCID: PMC7745884 DOI: 10.1002/jbm4.10417] [Citation(s) in RCA: 109] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Revised: 08/18/2020] [Accepted: 09/20/2020] [Indexed: 12/19/2022] Open
Abstract
The Third International Conference on Controversies in Vitamin D was held in Gubbio, Italy, September 10–13, 2019. The conference was held as a follow‐up to previous meetings held in 2017 and 2018 to address topics of controversy in vitamin D research. The specific topics were selected by the steering committee of the conference and based upon areas that remain controversial from the preceding conferences. Other topics were selected anew that reflect specific topics that have surfaced since the last international conference. Consensus was achieved after formal presentations and open discussions among experts. As will be detailed in this article, consensus was achieved with regard to the following: the importance and prevalence of nutritional rickets, amounts of vitamin D that are typically generated by sun exposure, worldwide prevalence of vitamin D deficiency, the importance of circulating concentrations of 25OHD as the best index of vitamin D stores, definitions and thresholds of vitamin D deficiency, and efficacy of vitamin D analogues in the treatment of psoriasis. Areas of uncertainly and controversy include the following: daily doses of vitamin D needed to maintain a normal level of 25OHD in the general population, recommendations for supplementation in patients with metabolic bone diseases, cutaneous production of vitamin D by UVB exposure, hepatic regulation of 25OHD metabolites, definition of vitamin D excess, vitamin D deficiency in acute illness, vitamin D requirements during reproduction, potential for a broad spectrum of cellular and organ activities under the influence of the vitamin D receptor, and potential links between vitamin D and major human diseases. With specific regard to the latter area, the proceedings of the conference led to recommendations for areas in need of further investigation through appropriately designed intervention trials. © 2020 The Authors. JBMR Plus published by Wiley Periodicals LLC. on behalf of American Society for Bone and Mineral Research.
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Affiliation(s)
- Andrea Giustina
- Institute of Endocrine and Metabolic Sciences, San Raffaele, Vita-Salute University and IRCCS Hospital Milan Italy
| | - Roger Bouillon
- Laboratory of Clinical and Experimental Endocrinology, Department of Chronic Diseases Metabolism and Ageing KU Leuven Leuven Belgium
| | - Neil Binkley
- Osteoporosis Clinical Research Program on Aging, University of Wisconsin Madison WI USA
| | | | - Robert A Adler
- McGuire Veterans Affairs Medical Center and Virginia Commonwealth University School of Medicine Richmond VA USA
| | - Jens Bollerslev
- Section of Specialized Endocrinology, Department of Endocrinology, Oslo University Hospital, Rikshospitalet, Oslo, Norway, and Faculty of Medicine University of Oslo Oslo Norway
| | - Bess Dawson-Hughes
- Jean Mayer USDA Nutrition Research Center on Aging Tufts University Boston MA USA
| | - Peter R Ebeling
- Department of Medicine, School of Clinical Sciences Monash University Calyton Victoria Australia
| | - David Feldman
- Department of Medicine Stanford University School of Medicine Stanford CA USA
| | - Annemieke Heijboer
- Endocrine Laboratory, Department of Clinical Chemistry Amsterdam UMC, Vrije Universiteit Amsterdam and University of Amsterdam, Amsterdam Gastroenterology & Metabolism Amsterdam The Netherlands
| | - Glenville Jones
- Department of Biomedical and Molecular Sciences Queen's University Kingston Ontario Canada
| | - Christopher S Kovacs
- Faculty of Medicine Memorial University of Newfoundland St. John's Newfoundland and Labrador Canada
| | - Marise Lazaretti-Castro
- Division of Endocrinology Escola Paulista de Medicina-Universidade Federal de Sao Paulo (EPM-UNIFESP) São Paulo Brazil
| | - Paul Lips
- Department of Internal Medicine, Endocrine Section Amsterdam University Medical Center Amsterdam The Netherlands
| | - Claudio Marcocci
- Department of Clinical and Experimental Medicine University of Pisa Pisa Italy
| | - Salvatore Minisola
- Department of Internal Medicine and Medical Disciplines University of Rome "Sapienza" Rome Italy
| | - Nicola Napoli
- Unit of Endocrinology and Diabetes Campus Bio-Medico, University of Rome Rome Italy.,Division of Bone and Mineral Diseases Washington University in St. Louis St. Louis MO USA
| | - Rene Rizzoli
- Service of Bone Diseases Geneva University Hospitals and Faculty of Medicine Geneva Switzerland
| | - Robert Scragg
- School of Population Health University of Auckland Auckland New Zealand
| | - John H White
- Department of Physiology McGill University Montreal Quebec Canada
| | - Anna Maria Formenti
- Institute of Endocrine and Metabolic Sciences, San Raffaele, Vita-Salute University and IRCCS Hospital Milan Italy
| | - John P Bilezikian
- Department of Medicine, Endocrinology Division, College of Physicians and Surgeons Columbia University New York NY USA
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27
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Jolliffe DA, Stefanidis C, Wang Z, Kermani NZ, Dimitrov V, White JH, McDonough JE, Janssens W, Pfeffer P, Griffiths CJ, Bush A, Guo Y, Christenson S, Adcock IM, Chung KF, Thummel KE, Martineau AR. Vitamin D Metabolism Is Dysregulated in Asthma and Chronic Obstructive Pulmonary Disease. Am J Respir Crit Care Med 2020; 202:371-382. [PMID: 32186892 DOI: 10.1164/rccm.201909-1867oc] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Rationale: Vitamin D deficiency is common in patients with asthma and chronic obstructive pulmonary disease (COPD). Low 25-hydroxyvitamin D (25[OH]D) levels may represent a cause or a consequence of these conditions.Objectives: To determine whether vitamin D metabolism is altered in asthma or COPD.Methods: We conducted a longitudinal study in 186 adults to determine whether the 25(OH)D response to six oral doses of 3 mg vitamin D3, administered over 1 year, differed between those with asthma or COPD versus control subjects. Serum concentrations of vitamin D3, 25(OH)D3, and 1α,25-dihydroxyvitamin D3 (1α,25[OH]2D3) were determined presupplementation and postsupplementation in 93 adults with asthma, COPD, or neither condition, and metabolite-to-parent compound molar ratios were compared between groups to estimate hydroxylase activity. Additionally, we analyzed 14 datasets to compare expression of 1α,25(OH)2D3-inducible gene expression signatures in clinical samples taken from adults with asthma or COPD versus control subjects.Measurements and Main Results: The mean postsupplementation 25(OH)D increase in participants with asthma (20.9 nmol/L) and COPD (21.5 nmol/L) was lower than in control subjects (39.8 nmol/L; P = 0.001). Compared with control subjects, patients with asthma and COPD had lower molar ratios of 25(OH)D3-to-vitamin D3 and higher molar ratios of 1α,25(OH)2D3-to-25(OH)D3 both presupplementation and postsupplementation (P ≤ 0.005). Intergroup differences in 1α,25(OH)2D3-inducible gene expression signatures were modest and variable if statistically significant.Conclusions: Attenuation of the 25(OH)D response to vitamin D supplementation in asthma and COPD associated with reduced molar ratios of 25(OH)D3-to-vitamin D3 and increased molar ratios of 1α,25(OH)2D3-to-25(OH)D3 in serum, suggesting that vitamin D metabolism is dysregulated in these conditions.
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Affiliation(s)
- David A Jolliffe
- Asthma UK Centre for Applied Research, Institute of Population Health Sciences, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - Christos Stefanidis
- Asthma UK Centre for Applied Research, Institute of Population Health Sciences, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - Zhican Wang
- Department of Pharmaceutics, University of Washington, Seattle, Washington
| | | | - Vassil Dimitrov
- Department of Physiology, McGill University, Montreal, Quebec, Canada
| | - John H White
- Department of Physiology, McGill University, Montreal, Quebec, Canada
| | | | - Wim Janssens
- Laboratory of Respiratory Diseases and Thoracic Surgery, Department of Chronic Diseases, Metabolism and Ageing, Katholieke Universiteit Leuven, Leuven, Belgium; and
| | - Paul Pfeffer
- Asthma UK Centre for Applied Research, Institute of Population Health Sciences, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - Christopher J Griffiths
- Asthma UK Centre for Applied Research, Institute of Population Health Sciences, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - Andrew Bush
- National Heart and Lung Institute, Faculty of Medicine, Imperial College London, London, United Kingdom
| | - Yike Guo
- Data Science Institute, William Penney Laboratory and
| | - Stephanie Christenson
- Division of Pulmonary, Critical Care, Allergy, & Sleep Medicine, Department of Medicine, University of California, San Francisco, California
| | - Ian M Adcock
- National Heart and Lung Institute, Faculty of Medicine, Imperial College London, London, United Kingdom
| | - Kian Fan Chung
- National Heart and Lung Institute, Faculty of Medicine, Imperial College London, London, United Kingdom
| | - Kenneth E Thummel
- Department of Pharmaceutics, University of Washington, Seattle, Washington
| | - Adrian R Martineau
- Asthma UK Centre for Applied Research, Institute of Population Health Sciences, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
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Fleet JC, Bernal-Mizrachi C, Hewison M, Jorde R, White J, Cantorna M, Schoenmakers I, Erben R. Highlights from the 22nd workshop on vitamin D in New York City, May 2019. J Steroid Biochem Mol Biol 2020; 203:105747. [PMID: 32858157 DOI: 10.1016/j.jsbmb.2020.105747] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- James C Fleet
- Department of Nutrition Science, College of Health and Human Sciences, Purdue University, 700 West State St., West Lafayette, IN 47906-2059, USA.
| | - Carlos Bernal-Mizrachi
- Division of Endocrinology, Metabolism & Lipid Research, School of Medicine, Washington University, 660 S. Euclid Ave. Campus Box 8127, St. Louis, MO 63110, USA.
| | - Martin Hewison
- Institute of Metabolism and Systems Research, Centre for Endocrinology, Diabetes, and Metabolism, Birmingham Health Partners, Level 2, IBR, Rom 225, The University of Birmingham, Birmingham, B15 2TT, UK.
| | - Rolf Jorde
- Endocrine Research Group, Department of Clinical Medicine, UiT The Arctic University of Norway, 9037 Tromsø, Norway.
| | - John White
- Department of Physiology, Department of Medicine, McGill University, 3655 Drummond St. Room 1112, Montreal, QC H3G 1Y6, Canada.
| | - Margherita Cantorna
- Department of Veterinary and Biomedical Sciences, College of Agricultural Sciences, 125 Henning Building, University Park, PA 16802, USA.
| | - Inez Schoenmakers
- Department of Medicine, Faculty of Medicine and Health Sciences, University of East Anglia, Norwich, NR4, 7TJ, UK.
| | - Reinhold Erben
- Institute of Physiology, Pathophysiology, and Biophysics, Unit of Physiology, Pathophysiology, and Experimental Endocrinology, Veterinärplatz 1, 1210 Wien, Vienna, Austria.
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29
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Boucher BJ. Why do so many trials of vitamin D supplementation fail? Endocr Connect 2020; 9:R195-R206. [PMID: 33052876 PMCID: PMC7487184 DOI: 10.1530/ec-20-0274] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 08/11/2020] [Indexed: 12/12/2022]
Abstract
Our knowledge of vitamin D has come a long way since the 100 years it took for doctors to accept, between 1860 and 1890, that both sunlight and cod liver oil (a well-known folk remedy) cured and prevented rickets. Vitamins D2/D3 were discovered exactly a hundred years ago, and over the last 50 years vitamin D has been found to have many effects on virtually all human tissues and not just on bone health, while mechanisms affecting the actions of vitamin D at the cellular level are increasingly understood, but deficiency persists globally. Observational studies in humans have shown that better provision of vitamin D is strongly associated, dose-wise, with reductions in current and future health risks in line with the known actions of vitamin D. Randomised controlled trials, commonly accepted as providing a 'gold standard' for assessing the efficacy of new forms of treatment, have frequently failed to provide supportive evidence for the expected health benefits of supplementation. Such RCTs, however, have used designs evolved for testing drugs while vitamin D is a nutrient; the appreciation of this difference is critical to identifying health benefits from existing RCT data and for improving future RCT design. This report aims, therefore, to provide a brief overview of the evidence for a range of non-bony health benefits of vitamin D repletion; to discuss specific aspects of vitamin D biology that can confound RCT design and how to allow for them.
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Affiliation(s)
- Barbara J Boucher
- Blizard Institute, Barts & The London school of Medicine & Dentistry, Queen Mary University of London, London, UK
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30
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Knuth MM, Mahapatra D, Jima D, Wan D, Hammock BD, Law M, Kullman SW. Vitamin D deficiency serves as a precursor to stunted growth and central adiposity in zebrafish. Sci Rep 2020; 10:16032. [PMID: 32994480 PMCID: PMC7524799 DOI: 10.1038/s41598-020-72622-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Accepted: 09/03/2020] [Indexed: 12/16/2022] Open
Abstract
Emerging evidence demonstrates the importance of sufficient vitamin D (1α, 25-dihydroxyvitamin D3) levels during early life stage development with deficiencies associated with long-term effects into adulthood. While vitamin D has traditionally been associated with mineral ion homeostasis, accumulating evidence suggests non-calcemic roles for vitamin D including metabolic homeostasis. In this study, we examined the hypothesis that vitamin D deficiency (VDD) during early life stage development precedes metabolic disruption. Three dietary cohorts of zebrafish were placed on engineered diets including a standard laboratory control diet, a vitamin D null diet, and a vitamin D enriched diet. Zebrafish grown on a vitamin D null diet between 2-12 months post fertilization (mpf) exhibited diminished somatic growth and enhanced central adiposity associated with accumulation and enlargement of visceral and subcutaneous adipose depots indicative of both adipocyte hypertrophy and hyperplasia. VDD zebrafish exhibited elevated hepatic triglycerides, attenuated plasma free fatty acids and attenuated lipoprotein lipase activity consistent with hallmarks of dyslipidemia. VDD induced dysregulation of gene networks associated with growth hormone and insulin signaling, including induction of suppressor of cytokine signaling. These findings indicate that early developmental VDD impacts metabolic health by disrupting the balance between somatic growth and adipose accumulation.
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Affiliation(s)
- Megan M Knuth
- Toxicology Program, Department of Biological Sciences, North Carolina State University, Campus Box 7633, Raleigh, NC, 27695-7633, USA.
| | - Debabrata Mahapatra
- Comparative Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, 27606, USA
| | - Dereje Jima
- Bioinformatics Research Center, North Carolina State University, Raleigh, NC, 27606, USA
- Center for Human Health and the Environment, North Carolina State University, Raleigh, NC, 27606, USA
| | - Debin Wan
- Department of Entomology and Nematology and University of California Davis Comprehensive Cancer Center, University of California Davis, Davis, CA, 95616, USA
| | - Bruce D Hammock
- Department of Entomology and Nematology and University of California Davis Comprehensive Cancer Center, University of California Davis, Davis, CA, 95616, USA
| | - Mac Law
- Department of Population Health and Pathobiology, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, 27606, USA
| | - Seth W Kullman
- Toxicology Program, Department of Biological Sciences, North Carolina State University, Campus Box 7633, Raleigh, NC, 27695-7633, USA.
- Center for Human Health and the Environment, North Carolina State University, Raleigh, NC, 27606, USA.
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31
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Saponaro F, Saba A, Zucchi R. An Update on Vitamin D Metabolism. Int J Mol Sci 2020; 21:ijms21186573. [PMID: 32911795 PMCID: PMC7554947 DOI: 10.3390/ijms21186573] [Citation(s) in RCA: 123] [Impact Index Per Article: 30.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 08/22/2020] [Accepted: 09/01/2020] [Indexed: 02/06/2023] Open
Abstract
Vitamin D is a steroid hormone classically involved in the calcium metabolism and bone homeostasis. Recently, new and interesting aspects of vitamin D metabolism has been elucidated, namely the special role of the skin, the metabolic control of liver hydroxylase CYP2R1, the specificity of 1α-hydroxylase in different tissues and cell types and the genomic, non-genomic and epigenomic effects of vitamin D receptor, which will be addressed in the present review. Moreover, in the last decades, several extraskeletal effects which can be attributed to vitamin D have been shown. These beneficial effects will be here summarized, focusing on the immune system and cardiovascular system.
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32
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Elkhwanky MS, Kummu O, Piltonen TT, Laru J, Morin-Papunen L, Mutikainen M, Tavi P, Hakkola J. Obesity Represses CYP2R1, the Vitamin D 25-Hydroxylase, in the Liver and Extrahepatic Tissues. JBMR Plus 2020; 4:e10397. [PMID: 33210060 PMCID: PMC7657391 DOI: 10.1002/jbm4.10397] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 07/14/2020] [Indexed: 01/05/2023] Open
Abstract
Low plasma level of 25-hydroxyvitamin D (25-OH-D), namely vitamin D deficiency, is associated with obesity and weight loss improves 25-OH-D status. However, the mechanism behind obesity-induced vitamin D deficiency remains unclear. Here, we report that obesity suppresses the expression of cytochrome P450 (CYP) 2R1, the main vitamin D 25-hydroxylase, in both mice and humans. In humans, weight loss induced by gastric bypass surgery increased the expression of CYP2R1 in the s.c. adipose tissue suggesting recovery after the obesity-induced suppression. At the same time, CYP27B1, the vitamin D 1α-hydroxylase, was repressed by the weight loss. In a mouse (C57BL/6N) model of diet-induced obesity, the plasma 25-OH-D was decreased. In accordance, the CYP2R1 expression was strongly repressed in the liver. Moreover, obesity repressed the expression of CYP2R1 in several extrahepatic tissues, the kidney, brown adipose tissue, and testis, but not in the white adipose tissue. Obesity had a similar effect in both male and female mice. In mice, obesity repressed expression of the vitamin D receptor in brown adipose tissue. Obesity also upregulated the expression of the vitamin D receptor and CYP24A1 in the s.c. adipose tissue of a subset of mice; however, no effect was observed in the human s.c. adipose tissue. In summary, we show that obesity affects CYP2R1 expression both in the mouse and human tissues. We suggest that in mouse the CYP2R1 repression in the liver plays an important role in obesity-induced vitamin D deficiency. Currently, it is unclear whether the CYP2R1 downregulation in extrahepatic tissues could contribute to the obesity-induced low plasma 25-OH-D, however, this phenomenon may affect at least the local 25-OH-D concentrations. © 2020 The Authors. JBMR Plus published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research.
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Affiliation(s)
- Mahmoud-Sobhy Elkhwanky
- Research Unit of Biomedicine, Pharmacology and Toxicology University of Oulu Oulu Finland.,Biocenter Oulu University of Oulu Oulu Finland.,Medical Research Center Oulu Oulu University Hospital and University of Oulu Oulu Finland
| | - Outi Kummu
- Research Unit of Biomedicine, Pharmacology and Toxicology University of Oulu Oulu Finland.,Biocenter Oulu University of Oulu Oulu Finland.,Medical Research Center Oulu Oulu University Hospital and University of Oulu Oulu Finland
| | - Terhi T Piltonen
- Department of Obstetrics and Gynecology, PEDEGO Research Unit, Medical Research Center Oulu University Hospital, University of Oulu Oulu Finland
| | - Johanna Laru
- Department of Obstetrics and Gynecology, PEDEGO Research Unit, Medical Research Center Oulu University Hospital, University of Oulu Oulu Finland
| | - Laure Morin-Papunen
- Department of Obstetrics and Gynecology, PEDEGO Research Unit, Medical Research Center Oulu University Hospital, University of Oulu Oulu Finland
| | - Maija Mutikainen
- A.I. Virtanen Institute for Molecular Sciences University of Eastern Finland Kuopio Finland
| | - Pasi Tavi
- A.I. Virtanen Institute for Molecular Sciences University of Eastern Finland Kuopio Finland
| | - Jukka Hakkola
- Research Unit of Biomedicine, Pharmacology and Toxicology University of Oulu Oulu Finland.,Biocenter Oulu University of Oulu Oulu Finland.,Medical Research Center Oulu Oulu University Hospital and University of Oulu Oulu Finland
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33
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Lu X, Vick S, Chen Z, Chen J, Watsky MA. Effects of Vitamin D Receptor Knockout and Vitamin D Deficiency on Corneal Epithelial Wound Healing and Nerve Density in Diabetic Mice. Diabetes 2020; 69:1042-1051. [PMID: 32139594 PMCID: PMC7171964 DOI: 10.2337/db19-1051] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Accepted: 02/23/2020] [Indexed: 12/20/2022]
Abstract
Diabetic keratopathy occurs in ∼70% of all people with diabetes. This study was designed to examine the effects of vitamin D receptor knockout (VDR-/-) and vitamin D deficiency (VDD) on corneal epithelial wound healing and nerve density in diabetic mice. Diabetes was induced using the low-dose streptozotocin method. Corneal epithelial wounds were created using an Algerbrush, and wound healing was monitored over time. Corneal nerve density was measured in unwounded mice. VDR-/- and VDD diabetic mice (diabetic for 8 and 20 weeks, respectively) had slower healing ratios than wild-type diabetic mice. VDR-/- and VDD diabetic mice also showed significantly decreased nerve density. Reduced wound healing ratios and nerve densities were not fully rescued by a supplemental diet rich in calcium, lactose, and phosphate. We conclude that VDR-/- and VDD significantly reduce both corneal epithelial wound healing and nerve density in diabetic mice. Because the supplemental diet did not rescue wound healing or nerve density, these effects are likely not specifically related to hypocalcemia. This work supports the hypothesis that low vitamin D levels can exacerbate preexisting ophthalmic conditions, such as diabetes.
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Affiliation(s)
- Xiaowen Lu
- Department of Cellular Biology and Anatomy, Medical College of Georgia, Augusta University, Augusta, GA
| | - Sarah Vick
- Department of Cellular Biology and Anatomy, Medical College of Georgia, Augusta University, Augusta, GA
| | - Zhong Chen
- Department of Cellular Biology and Anatomy, Medical College of Georgia, Augusta University, Augusta, GA
| | - Jie Chen
- Biostatistics and Data Science, Department of Population Health Sciences, Medical College of Georgia, Augusta University, Augusta, GA
| | - Mitchell A Watsky
- Department of Cellular Biology and Anatomy, Medical College of Georgia, Augusta University, Augusta, GA
- The Graduate School, Augusta University, Augusta, GA
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34
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Morró M, Vilà L, Franckhauser S, Mallol C, Elias G, Ferré T, Molas M, Casana E, Rodó J, Pujol A, Téllez N, Bosch F, Casellas A. Vitamin D Receptor Overexpression in β-Cells Ameliorates Diabetes in Mice. Diabetes 2020; 69:927-939. [PMID: 32086292 PMCID: PMC7171966 DOI: 10.2337/db19-0757] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 02/14/2020] [Indexed: 12/11/2022]
Abstract
Vitamin D deficiency has been associated with increased incidence of diabetes, both in humans and in animal models. In addition, an association between vitamin D receptor (VDR) gene polymorphisms and diabetes has also been described. However, the involvement of VDR in the development of diabetes, specifically in pancreatic β-cells, has not been elucidated yet. Here, we aimed to study the role of VDR in β-cells in the pathophysiology of diabetes. Our results indicate that Vdr expression was modulated by glucose in healthy islets and decreased in islets from both type 1 diabetes and type 2 diabetes mouse models. In addition, transgenic mice overexpressing VDR in β-cells were protected against streptozotocin-induced diabetes and presented a preserved β-cell mass and a reduction in islet inflammation. Altogether, these results suggest that sustained VDR levels in β-cells may preserve β-cell mass and β-cell function and protect against diabetes.
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Affiliation(s)
- Meritxell Morró
- Center of Animal Biotechnology and Gene Therapy, Universitat Autònoma de Barcelona, Bellaterra, Spain
- Department of Biochemistry and Molecular Biology, Universitat Autònoma de Barcelona, Bellaterra, Spain
- CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
| | - Laia Vilà
- Center of Animal Biotechnology and Gene Therapy, Universitat Autònoma de Barcelona, Bellaterra, Spain
- CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
| | - Sylvie Franckhauser
- Center of Animal Biotechnology and Gene Therapy, Universitat Autònoma de Barcelona, Bellaterra, Spain
- CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
| | - Cristina Mallol
- Center of Animal Biotechnology and Gene Therapy, Universitat Autònoma de Barcelona, Bellaterra, Spain
- Department of Biochemistry and Molecular Biology, Universitat Autònoma de Barcelona, Bellaterra, Spain
- CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
| | - Gemma Elias
- Center of Animal Biotechnology and Gene Therapy, Universitat Autònoma de Barcelona, Bellaterra, Spain
- Department of Biochemistry and Molecular Biology, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Tura Ferré
- Center of Animal Biotechnology and Gene Therapy, Universitat Autònoma de Barcelona, Bellaterra, Spain
- CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
| | - Maria Molas
- Center of Animal Biotechnology and Gene Therapy, Universitat Autònoma de Barcelona, Bellaterra, Spain
- Department of Biochemistry and Molecular Biology, Universitat Autònoma de Barcelona, Bellaterra, Spain
- CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
| | - Estefanía Casana
- Center of Animal Biotechnology and Gene Therapy, Universitat Autònoma de Barcelona, Bellaterra, Spain
- Department of Biochemistry and Molecular Biology, Universitat Autònoma de Barcelona, Bellaterra, Spain
- CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
| | - Jordi Rodó
- Center of Animal Biotechnology and Gene Therapy, Universitat Autònoma de Barcelona, Bellaterra, Spain
- Department of Biochemistry and Molecular Biology, Universitat Autònoma de Barcelona, Bellaterra, Spain
- CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
| | - Anna Pujol
- Center of Animal Biotechnology and Gene Therapy, Universitat Autònoma de Barcelona, Bellaterra, Spain
- Department of Biochemistry and Molecular Biology, Universitat Autònoma de Barcelona, Bellaterra, Spain
- CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
| | - Noèlia Téllez
- CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
- Bellvitge Biomedical Research Institute, Universitat de Barcelona, Barcelona, Spain
| | - Fàtima Bosch
- Center of Animal Biotechnology and Gene Therapy, Universitat Autònoma de Barcelona, Bellaterra, Spain
- Department of Biochemistry and Molecular Biology, Universitat Autònoma de Barcelona, Bellaterra, Spain
- CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
| | - Alba Casellas
- Center of Animal Biotechnology and Gene Therapy, Universitat Autònoma de Barcelona, Bellaterra, Spain
- CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
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Bikle DD. Vitamin D: Newer Concepts of Its Metabolism and Function at the Basic and Clinical Level. J Endocr Soc 2020; 4:bvz038. [PMID: 32051922 PMCID: PMC7007804 DOI: 10.1210/jendso/bvz038] [Citation(s) in RCA: 73] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Accepted: 01/06/2020] [Indexed: 02/08/2023] Open
Abstract
The interest in vitamin D continues unabated with thousands of publications contributing to a vast and growing literature each year. It is widely recognized that the vitamin D receptor (VDR) and the enzymes that metabolize vitamin D are found in many cells, not just those involved with calcium and phosphate homeostasis. In this mini review I have focused primarily on recent studies that provide new insights into vitamin D metabolism, mechanisms of action, and clinical applications. In particular, I examine how mutations in vitamin D metabolizing enzymes-and new information on their regulation-links vitamin D metabolism into areas such as metabolism and diseases outside that of the musculoskeletal system. New information regarding the mechanisms governing the function of the VDR elucidates how this molecule can be so multifunctional in a cell-specific fashion. Clinically, the difficulty in determining vitamin D sufficiency for all groups is addressed, including a discussion of whether the standard measure of vitamin D sufficiency, total 25OHD (25 hydroxyvitamin) levels, may not be the best measure-at least by itself. Finally, several recent large clinical trials exploring the role of vitamin D supplementation in nonskeletal diseases are briefly reviewed, with an eye toward what questions they answered and what new questions they raised.
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Affiliation(s)
- Daniel D Bikle
- Department of Medicine and Endocrine Research Unit, Veterans Affairs Medical Center and University of California, San Francisco, California
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36
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Bouillon R, Quesada-Gomez JM. Calcifediol or vitamin D to optimize vitamin D status: Reply to letter of M Sosas. Osteoporos Int 2019; 30:2521-2522. [PMID: 31612250 DOI: 10.1007/s00198-019-05164-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Accepted: 09/09/2019] [Indexed: 11/24/2022]
Affiliation(s)
- R Bouillon
- Department of Chronic Diseases, Metabolism and Ageing, Laboratory of Clinical and Experimental Endocrinology, KU Leuven, Herestraat, ON 1/902, 3000, Leuven, Belgium.
| | - J M Quesada-Gomez
- Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC) & Unidad de Gestión Clínica (UGC) de Endocrinología y Nutrición, Hospital Universitario Reina Sofía, Universidad de Córdoba, Avda. Menéndez Pidal s/n, 14004, Andalusia, Córdoba, Spain
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37
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Bouillon R, Bikle D. Vitamin D Metabolism Revised: Fall of Dogmas. J Bone Miner Res 2019; 34:1985-1992. [PMID: 31589774 PMCID: PMC9000993 DOI: 10.1002/jbmr.3884] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 09/06/2019] [Accepted: 09/24/2019] [Indexed: 12/19/2022]
Affiliation(s)
- Roger Bouillon
- Laboratory of Clinical and Experimental Endocrinology, Department of Chronic Diseases Metabolism and Ageing, KU Leuven, Leuven, Belgium
| | - Dan Bikle
- Medicine and Dermatology, University of California San Francisco and VA Medical Center, San Francisco, CA, USA
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38
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Nicolo M, Boullata JI. Serum 25OHD concentration as a predictor of haemoglobin A1c among adults living in the USA: NHANES 2003 to 2010. BMJ Nutr Prev Health 2019; 2:35-38. [PMID: 33235955 PMCID: PMC7664494 DOI: 10.1136/bmjnph-2019-000029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 04/25/2019] [Accepted: 05/10/2019] [Indexed: 01/21/2023] Open
Abstract
Background Vitamin D status influences glucose metabolism. Serum 25-hydroxyvitamin D (25OHD) concentrations have been inversely associated with type 2 diabetes risk. The optimal serum 25OHD level needed for adequate glycaemic control is unknown. Objective To determine the relationship among serum 25OHD concentrations and degree of glucose regulation using percentage of haemoglobin A1c (HbA1c%). Methods Data for adults ≥ 20 years from the National Health and Nutrition Examination Survey (NHANES) (2003-2010) were included. A binary logistic regression was used for serum 25OHD (nmol/L) as a continuous variable to determine the OR and 95% CI for HbA1c >6.5%, adjusting for sex, race and body mass index (BMI). Measures of serum 25OHD were grouped into quartiles and entered into a binary logistic regression model to determine the OR and 95% CI for HbA1c >6.5% in an adjusted model. Results Across all NHANES cycles, lower serum 25OHD was associated with greater odds of HbA1c ≥ 6.5% when adjusting for sex, race, age and BMI (NHANES 2003-2004 (N=4402): OR 0.985, 95% CI 0.979 to 0.990; NHANES 2005-2006 (N=4409): OR 0.976, 95% CI 0.969 to 0.982; NHANES 2007-2008 (N=4525): OR 0.989, 95% CI 0.984 to 0.993; and NHANES 2009-2010 (N=5660): OR 0.988, 95% CI 0.984 to 0.991). In an adjusted model, the lowest quartile of serum 25OHD (0-41 nmol/L, N=4879) was associated with greater odds of HbA1c ≥ 6.5% compared with the highest quartile (73-260 nmol/L, N=4472), OR 2.37, 95% CI 2.03 to 2.77. The odds of HbA1c ≥ 6.5% were also greater for adults with serum 25OHD considered to be sufficient compared with the highest quartile, OR 1.68, 95% CI 1.56 to 1.61). Conclusion Lower serum 25OHD concentrations are associated with poor glycaemic control (HbA1c ≥ 6.5%). Sufficient serum 25OHD levels were also associated with poorer blood glucose control. Further research is needed to investigate an optimal serum concentration or threshold to support adequate blood glucose control.
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Affiliation(s)
- Michele Nicolo
- Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Joseph I Boullata
- Nutrition Sciences, Drexel University, Philadelphia, Pennsylvania, USA
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Cesareo R, Falchetti A, Attanasio R, Tabacco G, Naciu AM, Palermo A. Hypovitaminosis D: Is It Time to Consider the Use of Calcifediol? Nutrients 2019; 11:E1016. [PMID: 31064117 PMCID: PMC6566727 DOI: 10.3390/nu11051016] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 04/28/2019] [Accepted: 05/03/2019] [Indexed: 12/13/2022] Open
Abstract
Hypovitaminosis D is becoming a notable health problem worldwide. A consensus exists among several different medical societies as to the need for adequate levels of vitamin D for bone and general health. The correct method by which to restore normal vitamin D levels is still a matter of debate. Although cholecalciferol remains the most commonly distributed form of vitamin D supplementation worldwide, several drugs with vitamin D activity are available for clinical use, and making the correct selection for the individual patient may be challenging. In this narrative review, we aim to contribute to the current knowledge base on the possible and appropriate use of calcifediol-the 25-alpha-hydroxylated metabolite-in relation to its chemical characteristics, its biological properties, and its pathophysiological aspects. Furthermore, we examine the trials that have aimed to evaluate the effect of calcifediol on the restoration of normal vitamin D levels. Calcifediol is more soluble than cholecalciferol in organic solvents, due to its high polarity. Good intestinal absorption and high affinity for the vitamin-D-binding protein positively affect the bioavailability of calcifediol compared with cholecalciferol. In particular, orally administered calcifediol shows a much shorter half-life than oral cholecalciferol. Most findings suggest that oral calcifediol is about three- to five-fold more powerful than oral cholecalciferol, and that it has a higher rate of intestinal absorption. Accordingly, calcifediol can be particularly useful in treating diseases associated with decreased intestinal absorption, as well as obesity (given its lower trapping in the adipose tissue) and potentially neurological diseases treated with drugs that interfere with the hepatic cytochrome P-450 enzyme system, resulting in decreased synthesis of calcifediol. Up to now, there has not been enough clinical evidence for its use in the context of osteoporosis treatment.
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Affiliation(s)
- Roberto Cesareo
- Unit of Metabolic Diseases, Department of Internal Medicine, S. Maria Goretti Hospital, 04100 Latina, Italy.
| | - Alberto Falchetti
- Istituto Auxologico Italiano, IRCCS, Unit for Bone Metabolism Diseases and Diabetes & Lab of Endocrine and Metabolic Research; University of Milan, and EndOsMet, Villa Donatello Private Hospital, 50100 Florence, Italy.
| | - Roberto Attanasio
- Endocrinology Service, IRCCS Orthopedic Institute Galeazzi, 20161 Milan, Italy.
| | - Gaia Tabacco
- Unit of Endocrinology and Diabetes, University Campus Bio-Medico, 00128 Rome, Italy.
| | - Anda Mihaela Naciu
- Unit of Endocrinology and Diabetes, University Campus Bio-Medico, 00128 Rome, Italy.
| | - Andrea Palermo
- Unit of Endocrinology and Diabetes, University Campus Bio-Medico, 00128 Rome, Italy.
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