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Di Molfetta IV, Bordoni L, Gabbianelli R, Sagratini G, Alessandroni L. Vitamin D and Its Role on the Fatigue Mitigation: A Narrative Review. Nutrients 2024; 16:221. [PMID: 38257114 PMCID: PMC10818509 DOI: 10.3390/nu16020221] [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: 11/29/2023] [Revised: 01/02/2024] [Accepted: 01/04/2024] [Indexed: 01/24/2024] Open
Abstract
Vitamin D has historically been associated with bone metabolism. However, over the years, a growing body of evidence has emerged indicating its involvement in various physiological processes that may influence the onset of numerous pathologies (cardiovascular and neurodegenerative diseases, rheumatological diseases, fertility, cancer, diabetes, or a condition of fatigue). This narrative review investigates the current knowledge of the pathophysiological mechanisms underlying fatigue and the ways in which vitamin D is implicated in these processes. Scientific studies in the databases of PubMed, Scopus, and Web of Science were reviewed with a focus on factors that play a role in the genesis of fatigue, where the influence of vitamin D has been clearly demonstrated. The pathogenic factors of fatigue influenced by vitamin D are related to biochemical factors connected to oxidative stress and inflammatory cytokines. A role in the control of the neurotransmitters dopamine and serotonin has also been demonstrated: an imbalance in the relationship between these two neurotransmitters is linked to the genesis of fatigue. Furthermore, vitamin D is implicated in the control of voltage-gated calcium and chloride channels. Although it has been demonstrated that hypovitaminosis D is associated with numerous pathological conditions, current data on the outcomes of correcting hypovitaminosis D are conflicting. This suggests that, despite the significant involvement of vitamin D in regulating mechanisms governing fatigue, other factors could also play a role.
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Affiliation(s)
- Ippolita Valentina Di Molfetta
- Chemistry Interdisciplinary Project, School of Pharmacy, University of Camerino, Via Madonna delle Carceri, 62032 Camerino, Italy; (I.V.D.M.); (L.A.)
| | - Laura Bordoni
- Unit of Molecular Biology and Nutrigenomics, School of Pharmacy, University of Camerino, Via Gentile III da Varano, 62032 Camerino, Italy; (L.B.); (R.G.)
| | - Rosita Gabbianelli
- Unit of Molecular Biology and Nutrigenomics, School of Pharmacy, University of Camerino, Via Gentile III da Varano, 62032 Camerino, Italy; (L.B.); (R.G.)
| | - Gianni Sagratini
- Chemistry Interdisciplinary Project, School of Pharmacy, University of Camerino, Via Madonna delle Carceri, 62032 Camerino, Italy; (I.V.D.M.); (L.A.)
| | - Laura Alessandroni
- Chemistry Interdisciplinary Project, School of Pharmacy, University of Camerino, Via Madonna delle Carceri, 62032 Camerino, Italy; (I.V.D.M.); (L.A.)
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Fan Y, Huang H, Chen X, Chen Y, Zeng X, Lin F, Chen X. Causal effect of vitamin D on myasthenia gravis: a two-sample Mendelian randomization study. Front Nutr 2023; 10:1171830. [PMID: 37538922 PMCID: PMC10394469 DOI: 10.3389/fnut.2023.1171830] [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: 02/22/2023] [Accepted: 07/05/2023] [Indexed: 08/05/2023] Open
Abstract
Introduction Observational studies suggest that vitamin D supplementation may be effective in preventing myasthenia gravis (MG). However, the causal relationship between circulating vitamin D levels and MG remains unclear. This study aimed to examine the genetic causality of circulating vitamin D and MG using data from large population-based genome-wide association studies (GWAS). Methods SNPs (single nucleotide polymorphisms) strongly associated with exposure were selected. Two-sample Mendelian Randomization (MR) was performed with inverse variance weighting (IVW), MR-Egger (Mendelian randomization-Egger), weight median and MR-PRESSO (Mendelian randomization pleiotropy residual sum and outlier) methods. Heterogeneity was tested via IVW and MR-Egger. Pleiotropy was tested using MR-Egger intercept test and MR-PRESSO method. MR-PRESSO was also used to detect outliers. Leave-one-out analysis was used to identify SNPs with potential effect. Reverse MR analysis was also performed. Result In IVW, circulating vitamin D levels had no causal effect on MG [OR = 0.91 (0.67-1.22), p = 0.532] and MG had no causal effect on circulating vitamin D [OR = 1.01 (099-1.02), p = 0.663]. No heterogeneity or pleiotropy was observed (p > 0.05). Other MR methods also agreed with IVW results. Conclusion This study provides the causal relationship between genetically predicted circulating vitamin D levels and MG and provides new insights into the genetics of MG.
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Affiliation(s)
- Yidan Fan
- The First Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Huaiying Huang
- The First Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Xiangda Chen
- The First Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yuexuan Chen
- The First Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Xiashi Zeng
- The First Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Fenwei Lin
- Guangdong East Hospital of Guangmei Development Zone Hospital of the Third Affiliated Hospital of Sun Yat-sen University, Meizhou, China
| | - Xu Chen
- The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
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Larrosa-Domínguez M. Vitamin D and myasthenia gravis. Neurologia 2023; 38:61-62. [PMID: 36462625 DOI: 10.1016/j.nrleng.2021.11.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 11/19/2021] [Indexed: 12/02/2022] Open
Affiliation(s)
- M Larrosa-Domínguez
- Universitat Rovira i Virgili, Departamento de Enfermería, Facultad de Enfermería, Tarragona, Spain.
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Epidemiology of myasthenia gravis in the province of Ourense (Galicia, Spain). NEUROLOGÍA (ENGLISH EDITION) 2022; 38:75-81. [PMID: 35249845 DOI: 10.1016/j.nrleng.2020.06.013] [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: 11/06/2019] [Accepted: 06/12/2020] [Indexed: 11/20/2022] Open
Abstract
INTRODUCTION Myasthenia gravis (MG) is an autoimmune disease affecting nerve transmission at the level of the neuromuscular junction, and typically causes fluctuating muscle weakness. Epidemiological studies show an increase in MG prevalence, particularly among the older population. OBJECTIVE We performed a retrospective epidemiological study to determine the incidence and prevalence of MG in the province of Ourense (Galicia, Spain), characterised by population ageing. MATERIAL AND METHODS Patients were selected from our clinical neuromuscular diseases database by searching for patients with an active prescription for pyridostigmine bromide. Incidence was estimated for the period 2009-2018. We calculated prevalence at 31/12/2018. According to census data for the province of Ourense, the population on 1/1/2019 was 307 651, of whom 96 544 (31.4%) were aged ≥ 65 years. RESULTS We identified 80 cases of MG, with a prevalence rate of 260 cases/1 000 000 population (95% CI, 202.7-316.4), rising to 517.9/1 000 000 population in those aged ≥ 65 (95% CI, 363.2-672.9). Cumulative incidence in the study period was 15.4 cases per 1 000 000 person-years. Early onset (≤ 50 years) was recorded in 29.1% of cases. CONCLUSION The prevalence of MG in our health district is one of the highest published figures, and the disease is highly prevalent in the older population.
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Vitamina D y miastenia gravis. Neurologia 2022. [DOI: 10.1016/j.nrl.2021.11.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Tutor JC. Vitamin D supplementation in multiple sclerosis – Can be done something more? Med Hypotheses 2019; 129:109256. [DOI: 10.1016/j.mehy.2019.109256] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 05/22/2019] [Accepted: 06/01/2019] [Indexed: 12/22/2022]
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Goischke HK. Vitamin D supplementation for the prevention or depletion of side effects of therapy with alemtuzumab in multiple sclerosis. Ther Clin Risk Manag 2019; 15:891-904. [PMID: 31371976 PMCID: PMC6636607 DOI: 10.2147/tcrm.s188941] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Accepted: 06/16/2019] [Indexed: 12/22/2022] Open
Abstract
PURPOSE OF REVIEW Not only the multiple sclerosis specialist but also the general neurologist and primary care practitioner are increasingly aware of possible adverse events (AEs) by treatment with alemtuzumab (over 47% risk of secondary autoimmune-mediated diseases). Vitamin D supplementation's effect (VDS) to reduce these autoimmune AEs is poorly performed in routine practice. This article seeks to justify why this simple, inexpensive, patient-friendly therapy should be seriously discussed. RECENT FINDINGS Patients who have developed autoimmunity also show a high basal level of IL-21, a cytokine which increases the growth of auto-reactive T-cells. For side effects such as thyroid dysfunction, autoimmune thrombocytopenia, autoimmune hemolytic anemia, autoimmune hepatitis, diabetes mellitus type 1, and alopecia areata/alopecia totalis, VDS may have an impact on the immunological mechanism, in particular lowering levels of IL-17 and IL-21. SUMMARY The potential role of vitamin D in influencing autoimmune diseases is evident. If a life-threatening side-effect can be prevented by high-dose VDS, it is ethical to initiate this add-on therapy despite contradictory results in studies on the effectiveness of VDS.
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Affiliation(s)
- Hans-Klaus Goischke
- Independent Research, Internal Medicine, Rehabilitation Medicine, Social Medicine, Bad Brückenau, Bavaria, Germany
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Wang Z, Yan Y. Immunopathogenesis in Myasthenia Gravis and Neuromyelitis Optica. Front Immunol 2017; 8:1785. [PMID: 29312313 PMCID: PMC5732908 DOI: 10.3389/fimmu.2017.01785] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Accepted: 11/29/2017] [Indexed: 12/13/2022] Open
Abstract
Myasthenia gravis (MG) and neuromyelitis optica (NMO) are autoimmune channelopathies of the peripheral neuromuscular junction (NMJ) and central nervous system (CNS) that are mainly mediated by humoral immunity against the acetylcholine receptor (AChR) and aquaporin-4 (AQP4), respectively. The diseases share some common features, including genetic predispositions, environmental factors, the breakdown of tolerance, the collaboration of T cells and B cells, imbalances in T helper 1 (Th1)/Th2/Th17/regulatory T cells, aberrant cytokine and antibody secretion, and complement system activation. However, some aspects of the immune mechanisms are unique. Both targets (AChR and AQP4) are expressed in the periphery and CNS, but MG mainly affects the NMJ in the periphery outside of CNS, whereas NMO preferentially involves the CNS. Inflammatory cells, including B cells and macrophages, often infiltrate the thymus but not the target—muscle in MG, whereas the infiltration of inflammatory cells, mainly polymorphonuclear leukocytes and macrophages, in NMO, is always observed in the target organ—the spinal cord. A review of the common and discrepant characteristics of these two autoimmune channelopathies may expand our understanding of the pathogenic mechanism of both disorders and assist in the development of proper treatments in the future.
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Affiliation(s)
- Zhen Wang
- Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, College of Life Sciences, Shaanxi Normal University, Xi'an, China.,Tianjin Medical University General Hospital, Tianjin Neurological Institute, Tianjin, China
| | - Yaping Yan
- Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, College of Life Sciences, Shaanxi Normal University, Xi'an, China
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Guan Y, Lv F, Meng Y, Ma D, Xu X, Song Y, Wang O, Jiang Y, Xia W, Xing X, Zhang J, Li M. Association between bone mineral density, muscle strength, and vitamin D status in patients with myasthenia gravis: a cross-sectional study. Osteoporos Int 2017; 28:2383-2390. [PMID: 28439619 DOI: 10.1007/s00198-017-4041-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Accepted: 04/04/2017] [Indexed: 12/18/2022]
Abstract
UNLABELLED Myasthenia gravis (MG) patients had low proximal hip BMD, which could be explained by reduced muscle strength, elevated bone resorption markers, vitamin D deficiency, and increased PTH levels in those with MG compared to controls. INTRODUCTION Muscle strength is closely correlated with bone mineral density (BMD) and vitamin D status. Here, we evaluated muscle strength, BMD, and vitamin D status in a large sample of Chinese patients with MG. METHODS In this cross-sectional survey, 86 patients with MG without glucocorticoid treatment and 86 healthy controls were included. Serum levels of 25-hydroxyvitamin D [25OHD], parathyroid hormone (PTH), bone turnover markers (BTMs), and BMD were measured and compared between the two groups. Grip strength and one-leg standing time (OLST) were also assessed in MG patients. RESULTS Low grip strength and short OLST were found in 11 (12.8%) and 12 (14.0%) MG patients, respectively. There were 3 (3.5%) MG patients with low bone mass for chronological age. Serum beta C-terminal telopeptide and PTH levels were higher (p < 0.001 and p = 0.001, respectively), and BMD at the femoral neck and trochanter were lower in MG patients (p < 0.001 and p < 0.001, respectively) compared to healthy controls. In patients with MG, grip strength was positively correlated with BMD. Serum 25OHD levels were lower in MG patients than in healthy controls (17.36 ± 6.64 vs. 22.11 ± 7.28 ng/ml, p < 0.001). CONCLUSION Grip strength was positively correlated with BMD in Chinese patients with MG. MG patients tended to have low proximal hip BMD, which may partially be explained by reduced muscle strength, vitamin D deficiency, increased PTH levels, and elevated bone resorption markers compared to controls.
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Affiliation(s)
- Y Guan
- Department of Neurology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - F Lv
- Department of Endocrinology, Key Laboratory of Endocrinology of Ministry of Health; Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Shuaifuyuan No. 1, Dongcheng District, Beijing, 100730, China
| | - Y Meng
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - D Ma
- Department of Endocrinology, Key Laboratory of Endocrinology of Ministry of Health; Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Shuaifuyuan No. 1, Dongcheng District, Beijing, 100730, China
| | - X Xu
- Department of Endocrinology, Key Laboratory of Endocrinology of Ministry of Health; Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Shuaifuyuan No. 1, Dongcheng District, Beijing, 100730, China
| | - Y Song
- Department of Endocrinology, Key Laboratory of Endocrinology of Ministry of Health; Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Shuaifuyuan No. 1, Dongcheng District, Beijing, 100730, China
| | - O Wang
- Department of Endocrinology, Key Laboratory of Endocrinology of Ministry of Health; Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Shuaifuyuan No. 1, Dongcheng District, Beijing, 100730, China
| | - Y Jiang
- Department of Endocrinology, Key Laboratory of Endocrinology of Ministry of Health; Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Shuaifuyuan No. 1, Dongcheng District, Beijing, 100730, China
| | - W Xia
- Department of Endocrinology, Key Laboratory of Endocrinology of Ministry of Health; Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Shuaifuyuan No. 1, Dongcheng District, Beijing, 100730, China
| | - X Xing
- Department of Endocrinology, Key Laboratory of Endocrinology of Ministry of Health; Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Shuaifuyuan No. 1, Dongcheng District, Beijing, 100730, China
| | - J Zhang
- Clinical Laboratory, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - M Li
- Department of Endocrinology, Key Laboratory of Endocrinology of Ministry of Health; Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Shuaifuyuan No. 1, Dongcheng District, Beijing, 100730, China.
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Almassinokiani F, Khodaverdi S, Solaymani-Dodaran M, Akbari P, Pazouki A. Effects of Vitamin D on Endometriosis-Related Pain: A Double-Blind Clinical Trial. Med Sci Monit 2016; 22:4960-4966. [PMID: 27986972 PMCID: PMC5189720 DOI: 10.12659/msm.901838] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Background Endometriosis is a disabling disease of reproductive-age women. Dysmenorrhea, dyspareunia, and pelvic pain are the main symptoms of endometriosis. Its etiology is not clear. Endometriosis may have various causes, including vitamin D deficiency, but its effect is controversial. Material/Methods In this double-blind clinical trial, we enrolled patients with endometriosis diagnosed and treated by laparoscopy, with scores of at least 3 for of dysmenorrhea and/or pelvic pain at 8 weeks after surgical treatment. They were randomly prescribed vitamin D (50 000 IU weekly for 12 weeks) or placebo. Severity of pain in the 2 groups (placebo and treatment) was compared by VAS test at 24 weeks after surgical treatment. Results There were 19 patients in the vitamin D group and 20 in the placebo group. Baseline characteristics in the 2 groups were similar. Following the treatment with vitamin D or placebo, we did not find significant differences in severity of pelvic pain (p=0.24) and dysmenorrhea (p=0.45) between the 2 groups. Mean pelvic pain at 24 weeks after laparoscopy in the vitamin D group was 0.84±1.74 and in placebo group it was 0.68±1.70 (p=0.513). Mean dysmenorrhea was 2.10±2.33 in the vitamin D group and 2.73±2.84 in the placebo group (p=0.45). Conclusions After ablative surgery for endometriosis, vitamin D treatment did not have a significant effect in reducing dysmenorrhea and/or pelvic pain.
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Affiliation(s)
- Fariba Almassinokiani
- Department of Obstetrics and Gynecology, Fellowship of Laparoscopy, Minimally Invasive Surgery Research Center, Iran University of Medical Sciences (IUMS), Tehran, Iran
| | - Sepideh Khodaverdi
- Department of Obstetrics and Gynecology, Fellowship of Laparoscopy, Endometriosis Research Center, Iran University of Medical Sciences (IUMS), Tehran, Iran
| | - Masoud Solaymani-Dodaran
- Department of Public Health Medicine, Minimally Invasive Surgery Research Center, Iran University of Medical Sciences (IUMS), Tehran, Iran
| | - Peyman Akbari
- Department of Internal Medicine, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Abdolreza Pazouki
- Department of Endoscopic Surgery, Minimally Invasive Surgery Research Center, Iran University of Medical Sciences, Tehran, Iran.,Center of Excellence for Minimally Invasive Surgery Training, Iran University of Medical Sciences, Tehran, Iran.,Center of Excellence of European Branch of International Federation for Surgery of Obesity, Tehran, Iran
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