Collections Vitamin D and correlated patho...

Vitamin D and correlated pathology/psychopathology
J J McGrath
No abstract text is available yet for this article.
March 2017: Acta Psychiatrica Scandinavica
Salvatore Giovinazzo, Teresa M Vicchio, Rosaria Certo, Angela Alibrandi, Orazio Palmieri, Alfredo Campennì, Salvatore Cannavò, Francesco Trimarchi, Rosaria Maddalena Ruggeri
Vitamin D deficiency and/or reduced function, as per certain polymorphisms of the vitamin D receptor (VDR) gene, have been related to several autoimmune disorders. The present study was aimed to investigate the association of Hashimoto's thyroiditis with vitamin D status and functional polymorphisms (SNPs) of the VDR gene. In this case-control study, 200 euthyroid subjects were enrolled: 100 newly diagnosed HT patients (87 F, 13 M; mean age ± SD 42 ± 15 year) and 100 healthy individuals, matched for age, sex, BMI, and month of blood sampling...
February 2017: Endocrine
Zhen Ren, Horia Pribiag, Sarah J Jefferson, Matthew Shorey, Thomas Fuchs, David Stellwagen, Bernhard Luscher
BACKGROUND: Major depressive disorder is increasingly recognized to involve functional deficits in both gamma-aminobutyric acid (GABA)ergic and glutamatergic synaptic transmission. To elucidate the relationship between these phenotypes, we used GABAA receptor γ2 subunit heterozygous (γ2(+/-)) mice, which we previously characterized as a model animal with construct, face, and predictive validity for major depressive disorder. METHODS: To assess possible consequences of GABAergic deficits on glutamatergic transmission, we quantitated the cell surface expression of N-methyl-D-aspartate (NMDA)-type and alpha-amino-3-hydroxy-5-methyl-4-isoxazole propionic acid (AMPA)-type glutamate receptors and the function of synapses in the hippocampus and medial prefrontal cortex of γ2(+/-) mice...
September 15, 2016: Biological Psychiatry
Ghasem Janbabai, Ramin Shekarriz, Homa Hassanzadeh, Mohsen Aarabi, Seyyedeh Samaneh Borhani
BACKGROUND: In recent years, epidemiologic and laboratory studies have implied that vitamin D deficiency has a role in the pathogenesis of breast cancer. It has shown that vitamin D can prevent tumor progression induced by carcinogens and inhibit the carcinogenic effects of high fat diet on breast tissue and growth of tumor cells. This study aimed to evaluate serum 25-hydroxyvitamin D level and its role in relation to tumor characteristics and different stages of disease in women with breast cancer...
January 1, 2016: International Journal of Hematology-oncology and Stem Cell Research
Kevin D Cashman, Kirsten G Dowling, Zuzana Škrabáková, Marcela Gonzalez-Gross, Jara Valtueña, Stefaan De Henauw, Luis Moreno, Camilla T Damsgaard, Kim F Michaelsen, Christian Mølgaard, Rolf Jorde, Guri Grimnes, George Moschonis, Christina Mavrogianni, Yannis Manios, Michael Thamm, Gert Bm Mensink, Martina Rabenberg, Markus A Busch, Lorna Cox, Sarah Meadows, Gail Goldberg, Ann Prentice, Jacqueline M Dekker, Giel Nijpels, Stefan Pilz, Karin M Swart, Natasja M van Schoor, Paul Lips, Gudny Eiriksdottir, Vilmundur Gudnason, Mary Frances Cotch, Seppo Koskinen, Christel Lamberg-Allardt, Ramon A Durazo-Arvizu, Christopher T Sempos, Mairead Kiely
BACKGROUND: Vitamin D deficiency has been described as being pandemic, but serum 25-hydroxyvitamin D [25(OH)D] distribution data for the European Union are of very variable quality. The NIH-led international Vitamin D Standardization Program (VDSP) has developed protocols for standardizing existing 25(OH)D values from national health/nutrition surveys. OBJECTIVE: This study applied VDSP protocols to serum 25(OH)D data from representative childhood/teenage and adult/older adult European populations, representing a sizable geographical footprint, to better quantify the prevalence of vitamin D deficiency in Europe...
April 2016: American Journal of Clinical Nutrition
Rhonda P Patrick, Bruce N Ames
Serotonin regulates a wide variety of brain functions and behaviors. Here, we synthesize previous findings that serotonin regulates executive function, sensory gating, and social behavior and that attention deficit hyperactivity disorder, bipolar disorder, schizophrenia, and impulsive behavior all share in common defects in these functions. It has remained unclear why supplementation with omega-3 fatty acids and vitamin D improve cognitive function and behavior in these brain disorders. Here, we propose mechanisms by which serotonin synthesis, release, and function in the brain are modulated by vitamin D and the 2 marine omega-3 fatty acids, eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA)...
June 2015: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
Elizabeth L Barry, Judy R Rees, Janet L Peacock, Leila A Mott, Christopher I Amos, Roberd M Bostick, Jane C Figueiredo, Dennis J Ahnen, Robert S Bresalier, Carol A Burke, John A Baron
CONTEXT: Adequate serum 25-hydroxyvitamin D concentrations, [25(OH)D], are required for optimal bone health, and low levels are associated with chronic diseases. OBJECTIVE: We investigated whether 41 candidate single nucleotide polymorphisms (SNPs) in vitamin D and calcium pathway genes (GC, DHCR7, CYP2R1, CYP27B1, CYP24A1, VDR, and CASR) are associated with [25(OH)D] or modify the increase in [25(OH)D] from vitamin D3 supplementation. DESIGN AND SETTING: Baseline and year 1 [25(OH)D] measurements from a randomized controlled trial conducted at 11 clinical centers in the United States...
October 2014: Journal of Clinical Endocrinology and Metabolism
Ann R Webb, Ola Engelsen
Exposure to sunlight is a major source of vitamin D for most people yet public health advice focuses overwhelmingly on avoiding exposure of unprotected skin because of the risks oferythema and skin cancer. We have calculated the exposure required to gain a number of proposed oral-equivalent doses of vitamin D, as functions of latitude, season, skin type and skin area exposed, together with the associated risk of erythema, expressed in minimum erythema doses. The model results show that the current recommended daily intake of 400 IU is readily achievable through casual sun exposure in the midday lunch hour, with no risk of erythema, for all latitudes some of the year and for all the year at some (low) latitudes...
2014: Advances in Experimental Medicine and Biology
Heike A Bischoff-Ferrari
Recent evidence suggests that vitamin D deficiency has harmful effects on health and that recent vitamin D intake recommendations may be associated with better health outcomes. In this chapter, evidence is summarized from different studies that evaluate threshold levels for serum 25(OH)D levels in relation to bone mineral density (BMD), lower extremity function, dental health, risk of falls, fractures, cancer prevention, incident hypertension and mortality. For all endpoints, levels in the deficient range (< 50 nmol/l; < 20 ng/ml) are associated with no benefit or adverse effects, while the most advantageous serum levels for 25(OH)D appeared to be close to 75 nmol/l (30 ng/ml)...
2014: Advances in Experimental Medicine and Biology
C-W Fu, J-T Liu, W-J Tu, J-Q Yang, Y Cao
OBJECTIVE: To assess the possible relationship between serum levels of 25[OH]D (25-hydroxyvitamin D) collected 24 hours after delivery and postpartum depression in a Chinese cohort sample. DESIGN: Cohort study. SETTING: One city hospital in Beijing, China. POPULATION: Women delivering a full-term, singleton, live-born infant at one city hospital in Beijing between August 2013 and November 2013. METHODS: Women were enrolled immediately postpartum...
November 2015: BJOG: An International Journal of Obstetrics and Gynaecology
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