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Influent factors of gestational vitamin D deficiency and its relation to an increased risk of preterm delivery in Chinese population. Sci Rep 2018; 8:3608. [PMID: 29483547 PMCID: PMC5827025 DOI: 10.1038/s41598-018-21944-3] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Accepted: 02/12/2018] [Indexed: 02/06/2023] Open
Abstract
Gestational vitamin D deficiency (VDD) has been linked with adverse pregnant outcomes. To investigate influent factors of gestational VDD and its relation to the incidence of preterm delivery, total 3598 eligible mother-and-singleton-offspring pairs were recruited. For serum 25(OH)D concentration, 941 pregnant women were sufficient, 1260 insufficient, and 1397 deficient. Further analysis showed that VDD was more prevalent in winter than in other seasons. Underweight but not overweight was a risk factor for gestational VDD. Multivitamin use reduced risk of gestational VDD. Interestingly, 8.23% delivered preterm infants among subjects with VDD (adjusted RR: 4.02; 95% CI: 2.33, 6.92) and 3.81% among subjects with gestational vitamin D insufficiency (VDI) (adjusted RR: 2.07; 95% CI: 1.16, 3.71). Moreover, 2.59% delivered early preterm infants among subjects with VDD (adjusted RR: 2.97; 95% CI: 1.41, 6.24) and 0.49% among subjects with VDI (adjusted RR: 0.54; 95% CI: 0.19, 1.51). The incidence of late preterm delivery was 5.64% among subjects with VDD (adjusted RR: 3.90; 95% CI: 2.26, 6.72) and 3.32% among subjects with VDI (adjusted RR: 2.09; 95% CI: 1.17, 3.74). In conclusion, pre-pregnancy BMI, seasonality and multivitamin use are influent factors of gestational vitamin D status. Gestational VDD is associated with an increased risk of preterm delivery in Chinese population.
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Abstract
PURPOSE OF REVIEW This article summarises recent developments on the prevention of food allergy in terms of the 5 D's of the development of food allergy: dry skin, diet, dogs, dribble, and vitamin D. RECENT FINDINGS While several advances have improved our understanding of the development of food allergy, few preventive strategies have been implemented beyond changes in infant feeding guidelines. These now state that the introduction of allergenic solids such as peanuts should occur in the first year of life. Results from randomised controlled trials on other allergenic solids, vitamin D supplementation, BCG immunisation at birth and eczema prevention are eagerly anticipated in order to inform further preventative strategies.
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Kong F, Martin DM. Atopic disorders in CHARGE syndrome: A retrospective study and literature review. Eur J Med Genet 2017; 61:225-229. [PMID: 29191495 DOI: 10.1016/j.ejmg.2017.11.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Revised: 11/12/2017] [Accepted: 11/26/2017] [Indexed: 12/29/2022]
Abstract
BACKGROUND Atopic disorders have been reported in CHARGE syndrome, but the prevalence and underlying mechanisms are not known. METHODS We performed a retrospective study of atopic disorders in 23 individuals with CHARGE syndrome, and reviewed other published reports of atopic disorders in CHARGE syndrome. We assayed for enrichment of atopic disorders in CHARGE syndrome based on gender and presence of a CHD7 pathogenic variant. RESULTS In our cohort, 65% (15/23) of individuals with CHARGE syndrome were found to have a pathogenic CHD7 variant. Overall, 65% (15/23) of individuals with CHARGE had atopic disorders. Among the 23 individuals with CHARGE, 22% (5/23) had food allergy, 26% (6/23) exhibited drug allergy, 22% (5/23) had contact allergy, 9% (2/23) had allergic rhinitis, and 22% (5/23) had asthma. In our cohort, the proportion of males to females with CHARGE and atopic disorders was 11:4 (P < 0.01), and there was no significant difference between atopic disorders in individuals with CHD7 pathogenic variants and those without CHD7 pathogenic variants (P > 0.05). CONCLUSION In our cohort of 23 individuals with CHARGE syndrome, 15 (65%) exhibited atopic disorders, with a slight male predominance.
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Affiliation(s)
- Fang Kong
- Department of Rheumatology and Allergy, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Donna M Martin
- Department of Pediatrics and Communicable Diseases, The University of Michigan Medical School, Ann Arbor, MI, USA; Department of Human Genetics, The University of Michigan Medical School, Ann Arbor, MI, USA.
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Roversi P, Johnson S, Preston SG, Nunn MA, Paesen GC, Austyn JM, Nuttall PA, Lea SM. Structural basis of cholesterol binding by a novel clade of dendritic cell modulators from ticks. Sci Rep 2017; 7:16057. [PMID: 29167574 PMCID: PMC5700055 DOI: 10.1038/s41598-017-16413-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Accepted: 11/13/2017] [Indexed: 12/13/2022] Open
Abstract
Two crystal structures of Japanin, an 18 kDa immune-modulatory lipocalin from the Brown Ear Tick (Rhipicephalus appendiculatus), have been determined at 2.2 and 2.4 Å resolution. In both crystal forms the protein is in complex with cholesterol, which sits in a closed pocket at the centre of the lipocalin barrel. Both crystal forms are dimers, which are also observed in solution. Molecular modelling suggests that previously-described members of a tick protein family bearing high sequence homology to Japanin are also likely to bind cholesterol or cholesterol derivatives.
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Affiliation(s)
- Pietro Roversi
- Biochemistry Department, University of Oxford, Oxford, OX1 3QU, England, United Kingdom. .,Leicester Institute of Structural and Chemical Biology, Department of Molecular and Cell Biology, University of Leicester, Henry Wellcome Building, Lancaster Road, Leicester, LE1 7RH, England, United Kingdom.
| | - Steven Johnson
- Sir William Dunn School of Pathology, University of Oxford, Oxford, OX1 3RE, England, United Kingdom
| | - Stephen G Preston
- Department of Zoology, University of Oxford, Oxford, OX1 3PS, England, United Kingdom
| | - Miles A Nunn
- Akari Therapeutics, Plc, 75/76 Wimpole Street, London, W1G 9RT, England, United Kingdom
| | - Guido C Paesen
- Division of Structural Biology, Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, OX3 7BN, United Kingdom
| | - Jonathan M Austyn
- Nuffield Department of Surgical Sciences, John Radcliffe Hospital, University of Oxford, Oxford, OX3 9DU, England, United Kingdom
| | - Patricia A Nuttall
- Department of Zoology, University of Oxford, Oxford, OX1 3PS, England, United Kingdom
| | - Susan M Lea
- Sir William Dunn School of Pathology, University of Oxford, Oxford, OX1 3RE, England, United Kingdom.
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Silva CM, Silva SAD, Antunes MMDC, Silva GAPD, Sarinho ESC, Brandt KG. Do infants with cow's milk protein allergy have inadequate levels of vitamin D? J Pediatr (Rio J) 2017. [PMID: 28628759 DOI: 10.1016/j.jped.2017.01.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
OBJECTIVE To verify whether infants with cow's milk protein allergy have inadequate vitamin D levels. METHODS This cross-sectional study included 120 children aged 2 years or younger, one group with cow's milk protein allergy and a control group. The children were recruited at the pediatric gastroenterology, allergology, and pediatric outpatient clinics of a university hospital in the Northeast of Brazil. A questionnaire was administered to the caregiver and blood samples were collected for vitamin D quantification. Vitamin D levels <30ng/mL were considered inadequate. Vitamin D level was expressed as mean and standard deviation, and the frequency of the degrees of sufficiency and other variables, as proportions. RESULTS Infants with cow's milk protein allergy had lower mean vitamin D levels (30.93 vs.35.29ng/mL; p=0.041) and higher deficiency frequency (20.3% vs.8.2; p=0.049) than the healthy controls. Exclusively or predominantly breastfed infants with cow's milk protein allergy had higher frequency of inadequate vitamin D levels (p=0.002). Regardless of sun exposure time, the groups had similar frequencies of inadequate vitamin D levels (p=0.972). CONCLUSIONS Lower vitamin D levels were found in infants with CMPA, especially those who were exclusively or predominantly breastfed, making these infants a possible risk group for vitamin D deficiency.
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Affiliation(s)
- Cristiane M Silva
- Universidade Federal de Pernambuco (UFPE), Programa de Pós Graduação em Saúde da Criança e do Adolescente, Recife, PE, Brazil.
| | - Silvia A da Silva
- Universidade Federal de Pernambuco (UFPE), Programa de Pós Graduação em Saúde da Criança e do Adolescente, Recife, PE, Brazil
| | - Margarida M de C Antunes
- Universidade Federal de Pernambuco (UFPE), Departamento Materno-Infantil, Serviço de Gastroenterologia Pediátrica HC-UFPE, Recife, PE, Brazil
| | - Gisélia Alves Pontes da Silva
- Universidade Federal de Pernambuco (UFPE), Departamento Materno-Infantil, Programa de Pós Graduação em Saúde da Criança e do Adolescente, Recife, PE, Brazil
| | - Emanuel Sávio Cavalcanti Sarinho
- Universidade Federal de Pernambuco (UFPE), Departamento Materno-Infantil, Programa de Pós Graduação em Saúde da Criança e do Adolescente, Recife, PE, Brazil; Universidade Federal de Pernambuco (UFPE), Departamento Materno-Infantil, Serviço de Alergologia e Imunologia HC-UFPE, Recife, PE, Brazil
| | - Katia G Brandt
- Universidade Federal de Pernambuco (UFPE), Departamento Materno-Infantil, Serviço de Gastroenterologia Pediátrica HC-UFPE, Recife, PE, Brazil
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Silva CM, Silva SAD, Antunes MMDC, Silva GAPD, Sarinho ESC, Brandt KG. Do infants with cow's milk protein allergy have inadequate levels of vitamin D? JORNAL DE PEDIATRIA (VERSÃO EM PORTUGUÊS) 2017. [DOI: 10.1016/j.jpedp.2017.06.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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57
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Chirumbolo S, Bjørklund G, Sboarina A, Vella A. The Role of Vitamin D in the Immune System as a Pro-survival Molecule. Clin Ther 2017; 39:894-916. [PMID: 28438353 DOI: 10.1016/j.clinthera.2017.03.021] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Revised: 03/30/2017] [Accepted: 03/31/2017] [Indexed: 02/07/2023]
Abstract
PURPOSE Vitamin D is a fascinating and attractive molecule that has gained particular attention in medicine in recent years. Its immunomodulatory and anti-inflammatory potential might resemble the activity of many nature-derived molecules (eg, flavonoids), but its role in biology was selected during a long evolutionary pathway to dampen the damaging effect of cell stress response and of the immune reaction. In this sense, this molecule can be considered an ancient hormone that serves, in its primary role, as a pro-survival agent. The goal of this review was to elucidate this topic. METHODS The article reviews current literature on the field, focusing on issues regarding the role of vitamin D in immunity. FINDINGS Vitamin D participates in the survival machinery used by the cell, and in particular it plays a major role in synchronizing calcium oscillatory signaling to allow cell autophagy or apoptosis during a stress response. IMPLICATIONS Vitamin D should be better highlighted in its molecular action and vitamin D receptor genomics to conceive a more suited therapeutic supplementation protocol in clinics.
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Affiliation(s)
- Salvatore Chirumbolo
- Department of Neurological and Movement Sciences, University of Verona, Verona, Italy.
| | - Geir Bjørklund
- Council for Nutritional and Environmental Medicine, Mo i Rana, Norway
| | - Andrea Sboarina
- Department of Surgery, Dentistry, Gynaecology and Paediatrics, University of Verona, Verona, Italy
| | - Antonio Vella
- Department of Medicine-University of Verona, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
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59
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Liu ZQ, Li MG, Geng XR, Liu J, Yang G, Qiu SQ, Liu ZG, Yang PC. Vitamin D regulates immunoglobulin mucin domain molecule-4 expression in dendritic cells. Clin Exp Allergy 2017; 47:656-664. [PMID: 28160341 DOI: 10.1111/cea.12894] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Revised: 12/10/2016] [Accepted: 01/15/2017] [Indexed: 12/14/2022]
Abstract
BACKGROUND Dendritic cell (DC)-derived immunoglobulin domain molecule (TIM)4 plays a critical role in the initiation of T helper (Th)2 polarization. Vitamin D (VitD) involves the regulation of a number of immune responses. OBJECTIVES This study tests a hypothesis that VitD regulates TIM4 expression in DCs. METHODS Peripheral blood samples were collected from patients with allergic rhinitis (AR) and healthy subjects. DCs were isolated from the samples and analyzed for the expression of TIM4. RESULTS We observed that the levels of calcitriol, the active form of VitD3, in the sera of AR patients were lower than that in healthy subjects. The peripheral DC expressed higher levels of TIM4 and lower levels of VDR. A negative correlation was identified between the data of serum calcitriol and TIM4 in DCs. Exposure DCs to calcitriol in the culture increased the expression of VDR. We also found that VDR bound to the TIM4 promoter locus in DCs to repress the TIM4 gene transcription and expression. CONCLUSIONS AND CLINICAL RELEVANCE VitD deficiency may contribute to the pathogenesis of AR by increasing the TIM4 expression. The results suggest that to regulate the serum calcitriol levels and the expression of VDR in DCs may be necessary to be taken into account in the treatment of AR.
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Affiliation(s)
- Z-Q Liu
- ENT Institute of the Research Center of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China.,Longgang ENT Hospital and Shenzhen ENT Institute, Shenzhen, China.,The Brain Body Institute, McMaster University, Hamilton, ON, Canada
| | - M-G Li
- ENT Institute of the Research Center of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China
| | - X-R Geng
- ENT Institute of the Research Center of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China.,Longgang ENT Hospital and Shenzhen ENT Institute, Shenzhen, China.,The Brain Body Institute, McMaster University, Hamilton, ON, Canada
| | - J Liu
- Shenzhen Maternity & Child Health Hospital, Shenzhen, China
| | - G Yang
- ENT Institute of the Research Center of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China.,Longgang ENT Hospital and Shenzhen ENT Institute, Shenzhen, China.,The Brain Body Institute, McMaster University, Hamilton, ON, Canada
| | - S-Q Qiu
- Longgang ENT Hospital and Shenzhen ENT Institute, Shenzhen, China
| | - Z-G Liu
- ENT Institute of the Research Center of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China
| | - P-C Yang
- ENT Institute of the Research Center of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China
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Foong RX, Meyer R, Dziubak R, Lozinsky AC, Godwin H, Reeve K, Hussain ST, Nourzaie R, Shah N. Establishing the prevalence of low vitamin D in non-immunoglobulin-E mediated gastrointestinal food allergic children in a tertiary centre. World Allergy Organ J 2017; 10:4. [PMID: 28101293 PMCID: PMC5225666 DOI: 10.1186/s40413-016-0135-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Accepted: 12/13/2016] [Indexed: 02/02/2023] Open
Abstract
Background There is no data on the prevalence of vitamin D deficiency in children with non-immunoglobulin-E (IgE) mediated gastrointestinal food allergy. The aims of our study were to understand the prevalence of vitamin D insufficiency and deficiency in children with non-IgE mediated gastrointestinal food allergy and identify predisposing factors. Methods This was a retrospective study which looked at data from Great Ormond Street Hospital from January 2002 to September 2015. Children 0–18 years old with a confirmed diagnosis of non-IgE mediated gastrointestinal food allergy who had a vitamin D level measured during the course of their disease were included. Low vitamin D levels were defined as <50 nmol/L; insufficient levels were defined as 25–50 nmol/L and deficient levels as <25 nmol/L. Patient characteristics and clinical factors were also recorded. Results Ninety-two patients met the study criteria; 49% were female and median age was 10 years 2 months [IQR: 4 years 8 months to 13 years 7 months]. Of the cohort, 26% (24/92) had low vitamin D levels; 16% had insufficient vitamin D levels and 10% had vitamin D deficiency. Gender (p = 0.043) and age (p = 0.035) were significantly associated with low vitamin D levels. Twelve percent of children who were on an amino acid formula (AAF) had low vitamin D compared to 31% of children who were not (p = 0.06). No other clinical factors were found to be significantly associated with low vitamin D levels. Conclusions Children with non-IgE mediated gastrointestinal food allergy are at risk of vitamin D insufficiency and deficiency. Further prospective studies need to be performed in all children with non-IgE mediated gastrointestinal food allergies. Trial registration The study was registered with the GOSH Research & Development department as a retrospective case note review. The Health Research Authority confirmed that NHS Research and Ethics Committee approval was not required; thus there is no trial registration number.
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Affiliation(s)
- Ru-Xin Foong
- Paediatric Gastroenterology Department, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK ; Institute of Child Health, University College, London, UK
| | | | - Robert Dziubak
- Paediatric Gastroenterology Department, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | - Adriana Chebar Lozinsky
- Paediatric Gastroenterology Department, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | - Heather Godwin
- Paediatric Gastroenterology Department, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | - Kate Reeve
- Paediatric Gastroenterology Department, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | - Syeda Tahmida Hussain
- Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Romman Nourzaie
- Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Neil Shah
- Paediatric Gastroenterology Department, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK ; Institute of Child Health, University College, London, UK
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Interaction Effects of Season of Birth and Cytokine Genes on Schizotypal Traits in the General Population. SCHIZOPHRENIA RESEARCH AND TREATMENT 2017; 2017:5763094. [PMID: 29464121 PMCID: PMC5804364 DOI: 10.1155/2017/5763094] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Accepted: 12/13/2017] [Indexed: 12/23/2022]
Abstract
Literature suggests that the effect of winter birth on vulnerability to schizophrenia might be mediated by increased expression of proinflammatory cytokines due to prenatal infection and its inadequate regulation by anti-inflammatory factors. As the response of the immune system depends on genotype, this study assessed the interaction effects of cytokine genes and season of birth (SOB) on schizotypy measured with the Schizotypal Personality Questionnaire (SPQ-74). We searched for associations of IL1B rs16944, IL4 rs2243250, and IL-1RN VNTR polymorphisms, SOB, and their interactions with the SPQ-74 total score in a sample of 278 healthy individuals. A significant effect of the IL4 X SOB interaction was found, p = 0.007 and η2 = 0.028. We confirmed this effect using an extended sample of 373 individuals. Homozygotes CC born in winter showed the highest SPQ total score and differed significantly from winter-born T allele carriers, p = 0.049. This difference was demonstrated for cognitive-perceptual and disorganized but not interpersonal dimensions. The findings are consistent with the hypothesis that the cytokine genes by SOB interaction can influence variability of schizotypal traits in the general population. The IL4 T allele appeared to have a protective effect against the development of positive and disorganized schizotypal traits in winter-born individuals.
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Influence of microbiome and diet on immune responses in food allergy models. ACTA ACUST UNITED AC 2016; 17-18:71-80. [PMID: 29967644 DOI: 10.1016/j.ddmod.2016.06.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The intestinal immune system is intimately connected with the vast array of microbes present within the gut and the diversity of food components that are consumed daily. The discovery of novel molecular mechanisms, which mediate host-microbe-nutrient communication, have highlighted the important roles played by microbes and dietary factors in influencing mucosal inflammatory and allergic responses. In this review, we summarize the recent important findings in this field, which are important for food allergy and particularly relevant to animal models of food allergy.
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Gominak SC. Vitamin D deficiency changes the intestinal microbiome reducing B vitamin production in the gut. The resulting lack of pantothenic acid adversely affects the immune system, producing a "pro-inflammatory" state associated with atherosclerosis and autoimmunity. Med Hypotheses 2016; 94:103-7. [PMID: 27515213 DOI: 10.1016/j.mehy.2016.07.007] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Revised: 07/02/2016] [Accepted: 07/12/2016] [Indexed: 12/19/2022]
Abstract
STUDY OBJECTIVES Vitamin D blood levels of 60-80ng/ml promote normal sleep. The present study was undertaken to explore why this beneficial effect waned after 2years as arthritic pain increased. Pantothenic acid becomes coenzyme A, a cofactor necessary for cortisol and acetylcholine production. 1950s experiments suggested a connection between pantothenic acid deficiency, autoimmune arthritis and insomnia. The B vitamins have been shown to have an intestinal bacterial source and a food source, suggesting that the normal intestinal microbiome may have always been the primary source of B vitamins. Review of the scientific literature shows that pantothenic acid does not have a natural food source, it is supplied by the normal intestinal bacteria. In order to test the hypothesis that vitamin D replacement slowly induced a secondary pantothenic acid deficiency, B100 (100mg of all B vitamins except 100mcg of B12 and biotin and 400mcg of folate) was added to vitamin D supplementation. METHODS Vitamin D and B100 were recommended to over 1000 neurology patients. Sleep characteristics, pain levels, neurologic symptoms, and bowel complaints were recorded by the author at routine appointments. RESULTS Three months of vitamin D plus B100 resulted in improved sleep, reduced pain and unexpected resolution of bowel symptoms. These results suggest that the combination of vitamin D plus B100 creates an intestinal environment that favors the return of the four specific species, Actinobacteria, Bacteroidetes, Firmicutes and Proteobacteria that make up the normal human microbiome. HYPOTHESES 1) Seasonal fluctuations in vitamin D levels have normally produced changes in the intestinal microbiome that promoted weight gain in winter. Years of vitamin D deficiency, however, results in a permanently altered intestinal environment that no longer favors the "healthy foursome". 2) Humans have always had a commensal relationship with their intestinal microbiome. We supplied them vitamin D, they supplied us B vitamins. 3) The four species that make up the normal microbiome are also commensal, each excretes at least one B vitamin that the other three need but cannot make. 4) Improved sleep and more cellular repairs eventually depletes body stores of pantothenic acid, causing reduced cortisol production, increased arthritic pain and widespread "pro-inflammatory" effects on the immune system. 5) Pantothenic acid deficiency also decreases available acetylcholine, the neurotransmitter used by the parasympathetic nervous system. Unopposed, increased sympathetic tone then produces hypertension, tachycardia, atrial arrhythmias and a "hyper-adrenergic" state known to predispose to heart disease and stroke.
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Affiliation(s)
- S C Gominak
- 1635 NE Fremont St., Portland, OR 97212, United States.
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64
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Goswami R, Kaplan MH. Essential vitamins for an effective T cell response. World J Immunol 2016; 6:39-59. [DOI: 10.5411/wji.v6.i1.39] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Revised: 10/07/2015] [Accepted: 11/25/2015] [Indexed: 02/06/2023] Open
Abstract
Effective adaptive immune responses rely upon appropriate activation of T cells by antigenic peptide-major histocompatibility complex on the surface of antigen presenting cells (APCs). Activation relies on additional signals including co-stimulatory molecules on the surface of the APCs that promote T cell expansion. The immune response is further sculpted by the cytokine environment. However, T cells also respond to other environmental signals including hormones, neurotransmitters, and vitamins. In this review, we summarize the mechanisms through which vitamins A and D impact immune responses, particularly in the context of T cell responses.
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Grant WB. The role of geographical ecological studies in identifying diseases linked to UVB exposure and/or vitamin D. DERMATO-ENDOCRINOLOGY 2016; 8:e1137400. [PMID: 27195055 PMCID: PMC4862381 DOI: 10.1080/19381980.2015.1137400] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Accepted: 12/28/2015] [Indexed: 02/06/2023]
Abstract
Using a variety of approaches, researchers have studied the health effects of solar ultraviolet (UV) radiation exposure and vitamin D. This review compares the contributions from geographical ecological studies with those of observational studies and clinical trials. Health outcomes discussed were based on the author's knowledge and include anaphylaxis/food allergy, atopic dermatitis and eczema, attention deficit hyperactivity disorder, autism, back pain, cancer, dental caries, diabetes mellitus type 1, hypertension, inflammatory bowel disease, lupus, mononucleosis, multiple sclerosis, Parkinson disease, pneumonia, rheumatoid arthritis, and sepsis. Important interactions have taken place between study types; sometimes ecological studies were the first to report an inverse correlation between solar UVB doses and health outcomes such as for cancer, leading to both observational studies and clinical trials. In other cases, ecological studies added to the knowledge base. Many ecological studies include other important risk-modifying factors, thereby minimizing the chance of reporting the wrong link. Laboratory studies of mechanisms generally support the role of vitamin D in the outcomes discussed. Indications exist that for some outcomes, UVB effects may be independent of vitamin D. This paper discusses the concept of the ecological fallacy, noting that it applies to all epidemiological studies.
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Affiliation(s)
- William B. Grant
- Sunlight, Nutrition, and Health Research Center, San Francisco, CA, USA
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