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Wimalawansa SJ. Physiology of Vitamin D-Focusing on Disease Prevention. Nutrients 2024; 16:1666. [PMID: 38892599 PMCID: PMC11174958 DOI: 10.3390/nu16111666] [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: 04/07/2024] [Revised: 05/23/2024] [Accepted: 05/25/2024] [Indexed: 06/21/2024] Open
Abstract
Vitamin D is a crucial micronutrient, critical to human health, and influences many physiological processes. Oral and skin-derived vitamin D is hydroxylated to form calcifediol (25(OH)D) in the liver, then to 1,25(OH)2D (calcitriol) in the kidney. Alongside the parathyroid hormone, calcitriol regulates neuro-musculoskeletal activities by tightly controlling blood-ionized calcium concentrations through intestinal calcium absorption, renal tubular reabsorption, and skeletal mineralization. Beyond its classical roles, evidence underscores the impact of vitamin D on the prevention and reduction of the severity of diverse conditions such as cardiovascular and metabolic diseases, autoimmune disorders, infection, and cancer. Peripheral target cells, like immune cells, obtain vitamin D and 25(OH)D through concentration-dependent diffusion from the circulation. Calcitriol is synthesized intracellularly in these cells from these precursors, which is crucial for their protective physiological actions. Its deficiency exacerbates inflammation, oxidative stress, and increased susceptibility to metabolic disorders and infections; deficiency also causes premature deaths. Thus, maintaining optimal serum levels above 40 ng/mL is vital for health and disease prevention. However, achieving it requires several times more than the government's recommended vitamin D doses. Despite extensive published research, recommended daily intake and therapeutic serum 25(OH)D concentrations have lagged and are outdated, preventing people from benefiting. Evidence suggests that maintaining the 25(OH)D concentrations above 40 ng/mL with a range of 40-80 ng/mL in the population is optimal for disease prevention and reducing morbidities and mortality without adverse effects. The recommendation for individuals is to maintain serum 25(OH)D concentrations above 50 ng/mL (125 nmol/L) for optimal clinical outcomes. Insights from metabolomics, transcriptomics, and epigenetics offer promise for better clinical outcomes from vitamin D sufficiency. Given its broader positive impact on human health with minimal cost and little adverse effects, proactively integrating vitamin D assessment and supplementation into clinical practice promises significant benefits, including reduced healthcare costs. This review synthesized recent novel findings related to the physiology of vitamin D that have significant implications for disease prevention.
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Luo C, Li Z, Lu Y, Wei F, Suo D, Lan S, Ren Z, Jiang R, Huang F, Chen A, Jiang L, Huang H, Guo X. Association of serum vitamin D status with gestational diabetes mellitus and other laboratory parameters in early pregnant women. BMC Pregnancy Childbirth 2022; 22:400. [PMID: 35545756 PMCID: PMC9097231 DOI: 10.1186/s12884-022-04725-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Accepted: 04/29/2022] [Indexed: 12/02/2022] Open
Abstract
Background The association between serum 25-hydroxy vitamin D (25(OH)D) status and gestational diabetes mellitus (GDM) gained attention in recent years, however the conclusion is still controversial due to many interfering factors, such as region of living, environment, lifestyle, and food supplements. Other metabolites (laboratory parameters) are also important in reflecting gestational states. This study aimed to investigate the association of serum 25(OH)D status in early pregnancy with GDM and other laboratory parameters in pregnant women. Methods A total of 1516 pregnant women whose blood glucose were normal before pregnancy in the city of Foshan in Guangdong, China were enrolled in this study. GDM was diagnosed between 24 to 28 weeks of pregnancy following the guidelines from the American Diabetes Association. Maternal serum 25(OH)D and other laboratory parameters—including hematology, coagulation, chemistry, and bone density—were measured utilizing various analytical methods in clinical laboratory at gestational weeks 11 to 14. Results The average 25(OH)D concentration was 59.1 ± 12.6 nmol/L. None of the study subjects had 25(OH)D < 25 nmol/L; 434 (28.6%) women had 25(OH)D deficiency (< 50 nmol/L), 882 women (58.2%) had 25(OH)D insufficiency (50–74 mmol/L) and 200 women (13.2%) had 25(OH)D sufficiency (≥ 75 nmol/L). There were 264 (17.4%) women diagnosed with GDM. There was not, however, an association between serum 25(OH)D in early pregnancy and GDM. Interestingly, women with more parity and high serum alkaline phosphatase levels had higher serum 25(OH)D levels. There was a possible positive association between serum 25(OH)D and pre-albumin, and a possible negative association between serum 25(OH)D, creatinine, and thrombin time. This study did not find an association between serum 25(OH)D and bone density. Conclusions There were no associations between maternal serum 25(OH)D concentration in early pregnancy and the risk of GDM or bone density. There were, however, correlations between serum 25(OH)D and parity, seasoning at sampling, serum alkaline phosphatase, creatinine, pre-albumin, and coagulation factor thrombin time, which need further study to explain their pathophysiology and clinical significance.
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Affiliation(s)
- Caihong Luo
- Department of Obstetrics, Southern Medical University Affiliated Maternal & Children's Hospital of Foshan, No. 11 Renminxi Road, Foshan, Guangdong, 528000, China.
| | - Zhiju Li
- Department of Epidemiology, School of Public Health, Southern Medical University, No. 1838 North Guangzhou Avenue, Guangzhou, 510515, China
| | - Yunya Lu
- Department of Obstetrics, Southern Medical University Affiliated Maternal & Children's Hospital of Foshan, No. 11 Renminxi Road, Foshan, Guangdong, 528000, China
| | - Fang Wei
- Department of Obstetrics, Southern Medical University Affiliated Maternal & Children's Hospital of Foshan, No. 11 Renminxi Road, Foshan, Guangdong, 528000, China
| | - Dongmei Suo
- Department of Obstetrics, Southern Medical University Affiliated Maternal & Children's Hospital of Foshan, No. 11 Renminxi Road, Foshan, Guangdong, 528000, China
| | - Shiyan Lan
- Department of Obstetrics, Southern Medical University Affiliated Maternal & Children's Hospital of Foshan, No. 11 Renminxi Road, Foshan, Guangdong, 528000, China
| | - Zhengyuan Ren
- Department of Information Technology, Southern Medical University Affiliated Maternal & Children's Hospital of Foshan, No. 11 Renminxi Road, Foshan, Guangdong, 528000, China
| | - Runchang Jiang
- Department of Laboratory Medicine, Southern Medical University Affiliated Maternal & Children's Hospital of Foshan, No. 11 Renminxi Road, Foshan, Guangdong, 528000, China
| | - Fang Huang
- Department of Obstetrics, Southern Medical University Affiliated Maternal & Children's Hospital of Foshan, No. 11 Renminxi Road, Foshan, Guangdong, 528000, China
| | - Aiyue Chen
- Department of Obstetrics, Southern Medical University Affiliated Maternal & Children's Hospital of Foshan, No. 11 Renminxi Road, Foshan, Guangdong, 528000, China
| | - Liejun Jiang
- Department of Laboratory Medicine, The People's Hospital of Guangxi Zhuang Autonomous Region, 6 Taoyuan Road, Nanning, Guangxi, 530021, China
| | - Huayi Huang
- School of Medical Laboratory, Youjiang Medical University for Nationalities, No. 98 Chengxiang Road, Baise, Guangxi, 533000, China. .,Mindray North America, 800 MacArthur Boulevard, Mahwah, New Jersey, 07430, USA. .,Department of Surgical Oncology, Roswell Park Comprehensive Cancer Center, Elm and Carlton Streets, Buffalo, New York, 14263, USA.
| | - Xiaoling Guo
- Department of Obstetrics, Southern Medical University Affiliated Maternal & Children's Hospital of Foshan, No. 11 Renminxi Road, Foshan, Guangdong, 528000, China.
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Chen B, Chen Y, Xu Y. Vitamin D deficiency in pregnant women: Influenced by multiple risk factors and increase the risks of spontaneous abortion and small-for-gestational age. Medicine (Baltimore) 2021; 100:e27505. [PMID: 34731133 PMCID: PMC8519205 DOI: 10.1097/md.0000000000027505] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Accepted: 09/23/2021] [Indexed: 01/05/2023] Open
Abstract
OBJECTIVE To analyze the level of vitamin D and its influencing factors in pregnant women, and to explore the influence of vitamin D deficiency on common adverse pregnancy outcomes in pregnant women, providing evidence for prevention and intervention of vitamin D deficiency in pregnant women. METHODS The basic data and blood samples of pregnant women in our hospital from January 2019 to June 2020 were collected, and the 25-(OH) D levels of the serum samples were detected. Then the vitamin D levels and its influencing factors were analyzed, and the relationships between vitamin D levels and common adverse pregnancy outcomes in the pregnant women as well as the incidence of small-for-gestational-age newborns were analyzed. RESULTS The vitamin D deficiency rate, insufficiency rate and sufficiency rate of pregnant women were 83.28%, 15.36%, and 1.36% respectively, with vast majority of the pregnant women in a state of vitamin D deficiency. Analysis of the influencing factors on the vitamin D level of pregnant women showed "28 weeks ≤ gestational age ≤32 weeks, summer and autumn, high school education and above, weekly time outdoors ≥10 hours, supplement of vitamin D and trace elements during pregnancy" were protective factors for vitamin D sufficiency in pregnant women. Linear correlation analysis showed the vitamin D level of pregnant women was highly positively correlated with temperature, the higher the temperature, the higher the vitamin D level (r = 0.907, t = 6.818, P < .001). The level of vitamin D in pregnant women was related to the occurrence of spontaneous abortion and small-for-gestational age (SGA), with the incidence of spontaneous abortion and SGA in the "vitamin D deficiency group" higher than those of other groups (P = .018, P = .016). CONCLUSIONS The vitamin D level of pregnant women in this area is relatively low, which is affected by multiple factors such as gestational age, season, education level of pregnant women, weekly time outdoors, vitamin D and trace element supplement during pregnancy. Low vitamin D levels can increase the risk of spontaneous abortion and SGA in pregnant women, so relevant measures should be adopted to improve the vitamin D status of pregnant women.
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Affiliation(s)
- Bo Chen
- Department of Clinical Laboratory, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
- Department of Nuclear Medicine, Chaohu Hospital Affiliated to Anhui Medical University, Hefei, Anhui, China
| | - Yongquan Chen
- Xiamen Key Laboratory of Biomarker Translational Medicine, Medical Laboratory of Xiamen Humanity Hospital Fujian Medical University, Xiamen, Fujian, China
| | - Yuanhong Xu
- Department of Clinical Laboratory, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
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Li X, Yu J, Wen L, Li Q, Yan J, Tian J, Tong C, Tong Q, Qi H, Saffery R, Kilby MD, Baker PN. Vitamin D status in women with dichorionic twin pregnancies and their neonates: a pilot study in China. BMC Pregnancy Childbirth 2021; 21:279. [PMID: 33832462 PMCID: PMC8034067 DOI: 10.1186/s12884-021-03707-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 03/10/2021] [Indexed: 01/16/2023] Open
Abstract
Background Vitamin D deficiency is a global public health issue in women and children and is associated with adverse impacts on child growth, such as rickets. However, prior studies have mainly focused on measuring vitamin D levels in singleton pregnant women and their offspring, and very limited studies have revealed the prevalence of vitamin D deficiency in twin pregnant women and their offspring. The aim of this study was to investigate vitamin D levels in twin-pregnant women and their neonates. We also explored the correlation of maternal vitamin D levels with neonatal outcomes and infant growth. Methods A prospective subcohort investigation was carried out among 72 dichorionic, diamniotic twin-pregnant mothers and their twin offspring from the Longitudinal Twin Study. Peripheral blood was collected from the mothers in the third trimester, and cord blood was collected from neonates at birth to identify 25[OH]D levels. Data on the characteristics of the mothers and neonates were collected. Infant growth data and food sensitivities were also collected. Results The average maternal 25[OH]D level was 31.78 ng/mL, with 19.4% being deficient and 20.8% insufficient, while the average neonatal 25[OH]D level was 15.37 ng/mL, with 99.3% being deficiency or insufficient. A positive correlation was found between maternal and neonatal 25[OH]D levels (beta-value: 0.43, 95% CI: 0.37, 0.49). Interestingly, the higher the maternal 25[OH]D level was, the smaller the cotwin birthweight discordance (beta-value: -2.67, 95% CI: − 5.11, − 0.23). In addition, the infants of mothers with vitamin D deficiency were more likely to be allergic to foods at 6 months than those of mothers with vitamin D sufficiency. Conclusions Twin neonates were at high risk of vitamin D deficiency, although their mothers’ vitamin D deficiency partially improved. Higher maternal vitamin D levels were associated with smaller discordance of cotwin birthweight. Trial registration Chinese Clinical Trial Registry ChiCTR-OOC-16008203, 1st April 2016. Supplementary Information The online version contains supplementary material available at 10.1186/s12884-021-03707-7.
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Affiliation(s)
- Xin Li
- Department of Obstetrics, The First Affiliated Hospital of Chongqing Medical University, 1 Youyi Road, Yuzhong District, Chongqing, 400016, China.,State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality, Chongqing Medical University, Chongqing, 400016, China.,International Collaborative Laboratory of Reproduction and Development of Chinese Ministry of Education, Chongqing Medical University, Chongqing, 400016, China
| | - Jiaxiao Yu
- Department of Obstetrics, The First Affiliated Hospital of Chongqing Medical University, 1 Youyi Road, Yuzhong District, Chongqing, 400016, China.,State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality, Chongqing Medical University, Chongqing, 400016, China.,International Collaborative Laboratory of Reproduction and Development of Chinese Ministry of Education, Chongqing Medical University, Chongqing, 400016, China
| | - Li Wen
- Department of Obstetrics, The First Affiliated Hospital of Chongqing Medical University, 1 Youyi Road, Yuzhong District, Chongqing, 400016, China.,State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality, Chongqing Medical University, Chongqing, 400016, China.,International Collaborative Laboratory of Reproduction and Development of Chinese Ministry of Education, Chongqing Medical University, Chongqing, 400016, China
| | - Qingshu Li
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality, Chongqing Medical University, Chongqing, 400016, China.,International Collaborative Laboratory of Reproduction and Development of Chinese Ministry of Education, Chongqing Medical University, Chongqing, 400016, China.,Department of Pathology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Jianying Yan
- Fujian Provincial Maternity and Children's Hospital, affiliated hospital of Fujian Medical University, Fuzhou, 350001, Fujian, China
| | - Jing Tian
- Department of Obstetrics and Gynecology, University-Town Hospital of Chongqing Medical University, Chongqing, 401331, China
| | - Chao Tong
- Department of Obstetrics, The First Affiliated Hospital of Chongqing Medical University, 1 Youyi Road, Yuzhong District, Chongqing, 400016, China. .,State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality, Chongqing Medical University, Chongqing, 400016, China. .,International Collaborative Laboratory of Reproduction and Development of Chinese Ministry of Education, Chongqing Medical University, Chongqing, 400016, China. .,Chongqing Population and Family Planning Science and Technology Research Institute, 18 Honghuang Rd, Jiangbei District, Chongqing, 400020, China.
| | - Qi Tong
- Chongqing Population and Family Planning Science and Technology Research Institute, 18 Honghuang Rd, Jiangbei District, Chongqing, 400020, China.
| | - Hongbo Qi
- Department of Obstetrics, The First Affiliated Hospital of Chongqing Medical University, 1 Youyi Road, Yuzhong District, Chongqing, 400016, China. .,State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality, Chongqing Medical University, Chongqing, 400016, China. .,International Collaborative Laboratory of Reproduction and Development of Chinese Ministry of Education, Chongqing Medical University, Chongqing, 400016, China. .,Department of Pathology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.
| | - Richard Saffery
- International Collaborative Laboratory of Reproduction and Development of Chinese Ministry of Education, Chongqing Medical University, Chongqing, 400016, China.,Cancer, Disease and Developmental Epigenetics, Murdoch Children's Research Institute, Parkville, Victoria, 3052, Australia
| | - Mark D Kilby
- Centre for Women's and Newborn Health, Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, B15 2TT, UK.,Fetal Medicine Centre, Birmingham Women's & Children's Foundation Trust, Edgbaston, Birmingham, B15 2TG, UK
| | - Philip N Baker
- International Collaborative Laboratory of Reproduction and Development of Chinese Ministry of Education, Chongqing Medical University, Chongqing, 400016, China.,College of Life Sciences, University of Leicester, Leicester, LE1 7RH, UK
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