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Vitamin D immune system

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https://www.readbyqxmd.com/read/28814440/mechanical-hormonal-and-metabolic-influences-on-blood-vessels-blood-flow-and-bone
#1
Rhonda D Prisby
Bone tissue is highly vascularized due to the various roles bone blood vessels play in bone and bone marrow function. For example, the vascular system is critical for bone development, maintenance and repair, and provides O2, nutrients, waste elimination, systemic hormones, and precursor cells for bone remodeling. Further, bone blood vessels serve as egress and ingress routes for blood and immune cells to and from the bone marrow. It is becoming increasingly clear that the vascular and skeletal systems are intimately linked in metabolic regulation and physiological and pathological processes...
August 16, 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/28799803/nutrition-inflammation-and-liver-spleen-axis
#2
Luigi Barrea, Carolina Di Somma, Giovanna Muscogiuri, Giovanni Tarantino, Gian Carlo Tenore, Francesco Orio, Annamaria Colao, Silvia Savastano
Chronic low-grade systemic inflammation represents a mechanism common to many diseases linked to atherosclerosis-related pathways. There is a growing body of evidence indicating that the combination of food quantity and quality along with genetic susceptibility are able to induce the aberrant activation of innate immune signalling, which initially contributes to chronic low-grade inflammation. Liver represents the central player to inflammatory response. Dietary/metabolic factors contribute to the pathogenesis of Non-alcoholic Fatty Liver Disease (NAFLD), the main causes of liver disease in the Western world...
August 11, 2017: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/28792480/the-role-of-nutritional-aspects-in-food-allergy-prevention-and-management
#3
REVIEW
Alessandra Mazzocchi, Carina Venter, Kate Maslin, Carlo Agostoni
The prevalence of food allergy in childhood appears to be increasing in both developed and transitional countries. The aim of this paper is to review and summarise key findings in the prevention and management of food allergy, focusing on the role of dietary components and nutritional habits in the development and optimal functioning of the immune system. Essential fatty acids, zinc and vitamin D are likely to enhance the anti-inflammatory and antioxidative barrier and promote immunologic tolerance. Additionally, nutritional components such as pre- and probiotics represent a novel research approach in the attempt to induce a tolerogenic immune environment...
August 9, 2017: Nutrients
https://www.readbyqxmd.com/read/28780880/-vitamin-d-metabolism-and-osteoporosis-in-systemic-sclerosis
#4
Szilvia Szamosi, Ágnes Horváth, Zoltán Szekanecz, Gabriella Szűcs
In the past few years more and more data have become available on the important role of vitamin D in immunological processes and inflammation. The role of vitamin D deficiency in the pathogenesis as well as in disease progression of different autoimmune and inflammatory conditions is suspected. Vitamin D deficiency is prevalent in several autoimmune diseases, including systemic sclerosis. Hypovitaminosis has been found to be associated with low bone mineral density and higher prevalence of osteoporosis in this group of patients...
August 2017: Orvosi Hetilap
https://www.readbyqxmd.com/read/28761286/house-dust-mite-sensitization-is-inversely-associated-with-plasma-25-hydroxyvitamin-d3-levels-in-patients-with-severe-atopic-dermatitis
#5
Yong Hyun Jang, Hyun Bo Sim, Sun Young Moon, Weon Ju Lee, Seok-Jong Lee, Meiling Jin, Sang-Hyun Kim, Do Won Kim
BACKGROUND: The relationship between atopic dermatitis (AD) and low vitamin D levels has been studied. Emerging evidence has implicated vitamin D as a critical regulator of immunity, playing a role in both the innate and cell-mediated immune systems. However, the effect of vitamin D on house dust mite (HDM) sensitization in patients with AD has not been established. OBJECTIVE: We investigated the association between vitamin D levels and HDM sensitization according to AD severity...
August 2017: Annals of Dermatology
https://www.readbyqxmd.com/read/28754822/epigenetic-research-in-multiple-sclerosis-progress-challenges-and-opportunities
#6
Galina Zheleznyakova, Eliane Piket, Francesco Marabita, Majid Pahlevan Kakhki, Ewoud Ewing, Sabrina Ruhrmann, Maria Needhamsen, Maja Jagodic, Lara Kular
Multiple Sclerosis (MS) is a chronic inflammatory and demyelinating disease of the central nervous system. MS likely results from a complex interplay between predisposing causal gene variants (the strongest influence coming from HLA class II locus) and environmental risk factors such as smoking, infectious mononucleosis and lack of sun exposure/vitamin D. However, little is known about the mechanisms underlying MS development and progression. Moreover, the clinical heterogeneity and variable response to treatment represent additional challenges to a comprehensive understanding and efficient treatment of disease...
July 28, 2017: Physiological Genomics
https://www.readbyqxmd.com/read/28749460/asthma-and-allergy-vitamin-d-primes-neonatal-immune-system
#7
Yvonne Bordon
No abstract text is available yet for this article.
July 27, 2017: Nature Reviews. Immunology
https://www.readbyqxmd.com/read/28744120/inhibitory-effect-of-a-new-orally-active-cedrol-loaded-nanostructured-lipid-carrier-on-compound-48-80-induced-mast-cell-degranulation-and-anaphylactic-shock-in-mice
#8
Shreyasi Chakraborty, Nabanita Kar, Leena Kumari, Asit De, Tanmoy Bera
BACKGROUND: Type I hypersensitivity is an allergic reaction characterized by the overactivity of the immune system provoked by normally harmless substances. Glucocorticoids, anti-histamines, or mast cell stabilizers are the choices of treatment for type I hypersensitivity. Even though these drugs have the anti-allergic effect, they can have several side effects in prolong use. Cedrol is the main bioactive compound of Cedrus atlantica with anti-tumor, anti-oxidative, and platelet-activating factor inhibiting properties...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28712921/selective-regulation-of-biological-processes-by-vitamin-d-based-on-the-spatio-temporal-cistrome-of-its-receptor
#9
Antonio Neme, Sabine Seuter, Carsten Carlberg
The transcription factor vitamin D receptor (VDR) is the exclusive nuclear target of the biologically active form of vitamin D (1,25(OH)2D3). In THP-1 human monocytes we obtained a highly accurate VDR cistrome after 2 and 24h ligand stimulation comprising >11,600 genomic loci, 78% of which were detected exclusively after 24h. In contrast, a group of 510 persistent VDR sites occurred at all conditions and some 2100 VDR loci were only transiently occupied. Machine learning and statistical analysis as well as a comparison with the re-analyzed B cell VDR cistrome indicated a subgroup of 339 highly conserved persistent VDR sites that were suited best for describing vitamin D-triggered gene regulatory scenarios...
July 13, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28680338/evaluation-of-selected-immunological-parameters-and-the-concentration-of-vitamin-d-in-children-with-asthma-case-control-study
#10
Agata Wawrzyniak, Agnieszka Lipińska-Opałka, Robert Zdanowski, Sławomir Lewicki, Piotr Murawski, Bolesław Kalicki
Due to the increased incidence of allergic diseases and emerging effects of unsatisfactory control of asthma, new mechanisms for supervising the immune system should be searched. The aim of the study was to analyze the percentage of CD3, CD4, CD8, CD19, CD16/56, NKT, CD3 anti-HLADR3 and Foxp3 regulatory lymphocytes in patients with asthma. Additionally the correlation between immune parameters, severity of asthma and serum concentration of vitamin D was performed. 25 children diagnosed with asthma were enrolled...
2017: Central-European Journal of Immunology
https://www.readbyqxmd.com/read/28672783/vitamin-d-and-infectious-diseases-simple-bystander-or-contributing-factor
#11
REVIEW
Pedro Henrique França Gois, Daniela Ferreira, Simon Olenski, Antonio Carlos Seguro
Vitamin D (VD) is a fat-soluble steroid essential for life in higher animals. It is technically a pro-hormone present in few food types and produced endogenously in the skin by a photochemical reaction. In recent decades, several studies have suggested that VD contributes to diverse processes extending far beyond mineral homeostasis. The machinery for VD production and its receptor have been reported in multiple tissues, where they have a pivotal role in modulating the immune system. Similarly, vitamin D deficiency (VDD) has been in the spotlight as a major global public healthcare burden...
June 24, 2017: Nutrients
https://www.readbyqxmd.com/read/28669663/1-25-oh-2-vitamin-d-3-contributes-to-osteoclast-like-trans-differentiation-of-malignant-plasma-cells
#12
Paola Cafforio, Stella D'Oronzo, Claudia Felici, Sandra Sigala, Martina Fragni, Francesco Silvestris
1,25-dihydroxyvitamin D (1,25(OH)2D) exerts pleiotropic effects including bone turnover and immune system regulation. It inhibits both T and B cell proliferation while decreasing the secretion of inflammatory cytokines and immunoglobulins. 1,25(OH)2D also modulates monocyte-macrophage and osteoclast (OC) maturation. Since we have previously described that malignant plasma cells may trans-differentiate towards the myeloid lineage participating to skeletal devastation in multiple myeloma (MM), we here evaluated in vitro the role of 1,25(OH)2D in this lineage switch...
June 29, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28665937/cholecalciferol-decreases-inflammation-and-improves-vitamin-d-regulatory-enzymes-in-lymphocytes-in-the-uremic-environment-a-randomized-controlled-pilot-trial
#13
José Tarcisio G Carvalho, Marion Schneider, Lilian Cuppari, Caren C Grabulosa, Danilo T Aoike, Beata Marie Q Redublo, Marcelo C Batista, Miguel Cendoroglo, Rosa Maria Moyses, Maria Aparecida Dalboni
It has been reported that vitamin D regulates the immune system. However, whether vitamin D repletion modulates inflammatory responses in lymphocytes from dialysis patients is unclear. In the clinical trial, thirty-two (32) dialysis patients with 25 vitamin D ≤ 20ng/mL were randomized to receive either supplementation of cholecalciferol 100,000 UI/week/3 months (16 patients) or placebo (16 patients). In the in vitro study, B and T lymphocytes from 12 healthy volunteers (HV) were incubated with or without uremic serum in the presence or absence of 25 or 1,25 vitamin D...
2017: PloS One
https://www.readbyqxmd.com/read/28660088/high-vitamin-d-levels-may-downregulate-inflammation-in-patients-with-beh%C3%A3-et-s-disease
#14
Fahd Adeeb, Maria Usman Khan, Xia Li, Austin G Stack, Joseph Devlin, Alexander D Fraser
Vitamin D plays a significant role in the immune system modulation and may confer a protective role in autoimmune diseases. We conducted a case-control study to compare 25(OH)D levels in patients with BD who were managed at a regional rheumatology programme in the midwest region of Ireland compared to matched controls. Healthy controls were selected from the Irish health system and matched in 1 : 5 ratio for age, sex, and the month of the year. 25(OH)D levels <20 nmol/L were classified as deficient while levels between 20 and 40 nmol/L were classified as insufficient...
2017: International Journal of Inflammation
https://www.readbyqxmd.com/read/28659016/calcipotriene-betamethasone-dipropionate-aerosol-foam-in-the-treatment-of-plaque-psoriasis-a-review-of-the-literature
#15
Jillian Frieder, Dario Kivelevitch, Alan Menter
Psoriasis is a common chronic immune-mediated skin disease which has a significant impact on patients' quality of life, and is associated with numerous comorbidities (i.e., psoriatic arthritis, Crohn's disease and cardiovascular disease). A greater understanding of its immunopathogenesis has guided the development of novel, more targeted therapies. Nonetheless, traditional treatment with topical agents, phototherapy and systemic medications is used in the management of the majority of psoriasis patients. Mainstay topical treatments include corticosteroids and vitamin D derivatives...
June 29, 2017: Therapeutic Delivery
https://www.readbyqxmd.com/read/28652651/molecular-mimicry-in-helicobacter-pylori-infections
#16
REVIEW
Magdalena Chmiela, Weronika Gonciarz
Gram-negative bacteria Helicobacter pylori (H. pylori) colonize gastric mucosa in humans and increase the risk of serious diseases such as gastric and duodenal ulcers, stomach cancers and mucosa associated lymphoid tissue lymphoma. The role of H. pylori infection in the pathogenesis of several extragastric diseases has been suggested including immune thrombocytopenic purpura, iron deficiency anemia, vitamin D deficiency, cardiovascular diseases, diabetes mellitus and dermatological disorders. Also neurological diseases and even lung cancer have attracted researchers concern...
June 14, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28635660/diverse-regulation-of-vitamin-d-receptor-gene-expression-by-1-25-dihydroxyvitamin-d-and-atra-in-murine-and-human-blood-cells-at-early-stages-of-their-differentiation
#17
Sylwia Janik, Urszula Nowak, Agnieszka Łaszkiewicz, Anastasiia Satyr, Michał Majkowski, Aleksandra Marchwicka, Łukasz Śnieżewski, Klaudia Berkowska, Marian Gabryś, Małgorzata Cebrat, Ewa Marcinkowska
Vitamin D receptor (VDR) is present in multiple blood cells, and the hormonal form of vitamin D, 1,25-dihydroxyvitamin D (1,25D) is essential for the proper functioning of the immune system. The role of retinoic acid receptor α (RARα) in hematopoiesis is very important, as the fusion of RARα gene with PML gene initiates acute promyelocytic leukemia where differentiation of the myeloid lineage is blocked, followed by an uncontrolled proliferation of leukemic blasts. RARα takes part in regulation of VDR transcription, and unliganded RARα acts as a transcriptional repressor to VDR gene in acute myeloid leukemia (AML) cells...
June 21, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28626020/lack-of-effect-of-vitamin-d3-supplementation-in-autism-a-20-week-placebo-controlled-rct
#18
Conor P Kerley, Clare Power, Louise Gallagher, David Coghlan
OBJECTIVES: Data suggest a potential role for vitamin D in autism spectrum disorder (ASD). We wanted to assess the effect of vitamin D3 supplementation compared with placebo in children with ASD. DESIGN: This was a double-blind, randomised, placebo-controlled trial. SETTING: A paediatric outpatient centre at high latitude over the winter season in Dublin, Ireland (53°N). PATIENTS: 42 children with ASD. INTERVENTIONS: 2000 IU vitamin D3 supplementation or placebo daily for 20 weeks...
June 16, 2017: Archives of Disease in Childhood
https://www.readbyqxmd.com/read/28622535/vitamin-d-mediates-the-relationship-between-placental-cathelicidin-and-group-b-streptococcus-colonization-during-pregnancy
#19
Christine C Akoh, Eva K Pressman, Corrie M Whisner, Carrie Thomas, Chang Cao, Tera Kent, Elizabeth Cooper, Kimberly O O'Brien
Vitamin D is thought to modulate innate immune responses, and recent studies have highlighted the autocrine and paracrine functions of vitamin D in the placenta. Our objective was to determine the relationship between maternal vitamin D status and placental antimicrobial peptide (AMP) expression in a group of racially and ethnically diverse pregnant adolescents. In this study, 158 pregnant adolescents were recruited from the Rochester Adolescent Maternity Program (RAMP) in Rochester, NY. Maternal serum concentrations of the vitamin D biomarkers, 25-hydroxyvitamin D (25(OH)D) and 1,25-dihydroxyvitamin D (1,25(OH)2D), were measured at mid-gestation (∼26 weeks) and at delivery...
June 2017: Journal of Reproductive Immunology
https://www.readbyqxmd.com/read/28619429/vitamin-d-and-multiple-sclerosis-an-update
#20
REVIEW
Charles Pierrot-Deseilligny, Jean-Claude Souberbielle
The most recent findings linking exposure to sun and vitamin D insufficiency to multiple sclerosis (MS) are reviewed. Due to insufficient sunshine and changing lifestyles, hypovitaminosis D is widespread in temperate countries. Numerous epidemiological studies have strongly suggested that sunshine and vitamin D insufficiency contributes to MS risk in these countries. Moreover, several large genetic studies in MS patients have recently stated unequivocally that diverse abnormalities involving vitamin D metabolism are related to the risk of the disease...
May 2017: Multiple Sclerosis and related Disorders
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