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vitamin D and sun

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https://www.readbyqxmd.com/read/29452404/vitamin-e-and-vitamin-c-supplementation-improves-antioxidant-status-and-immune-function-in-oxidative-stressed-breeder-roosters-by-up-regulating-expression-of-gsh-px-gene
#1
Y N Min, Z Y Niu, T T Sun, Z P Wang, P X Jiao, B B Zi, P P Chen, D L Tian, F Z Liu
This study aimed to evaluate the effects of vitamin C and vitamin E on antioxidant capacity and immune function in oxidative-stressed breeder roosters. One hundred twenty 45-week-old Lveyang black-boned breeder roosters were randomly assigned to 5 dietary treatments, including negative control group (NC), positive control group (PC), and 3 trial groups, which were fed the diets containing 300 mg/kg VC, 200 mg/kg VE, or 300 mg/kg VC and 200 mg/kg VE (VC+VE). At 47 wk of age, the positive control and trial groups were subcutaneously injected 3 times every other d with dexamethasone (DEX) 4 mg/kg of body weight, the negative control group was injected with saline...
February 14, 2018: Poultry Science
https://www.readbyqxmd.com/read/29449827/sun-exposure-across-the-life-course-significantly-modulates-early-multiple-sclerosis-clinical-course
#2
Steve Simpson, Ingrid van der Mei, Robyn M Lucas, Anne-Louise Ponsonby, Simon Broadley, Leigh Blizzard, Bruce Taylor
Background: Low vitamin D and/or sun exposure have been associated with increased risk of multiple sclerosis (MS) onset. However, comparatively, few studies have prospectively examined associations between these factors and clinical course. Objectives: To evaluate the association of sun exposure parameters and vitamin D levels with conversion to MS and relapse risk in a prospectively monitored cohort of 145 participants followed after a first demyelinating event up to 5-year review (AusLong Study)...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29448922/a-randomised-control-crossover-trial-of-a-theory-based-intervention-to-improve-sun-safe-and-healthy-behaviours-in-construction-workers-study-protocol
#3
Amanda Nioi, Charlotte Wendelboe-Nelson, Sue Cowan, Hilary Cowie, Shahzad Rashid, Peter Ritchie, Mark Cherrie, Terry C Lansdown, John W Cherrie
BACKGROUND: Exposure to sunlight can have both positive and negative health impacts. Excessive exposure to ultra-violet (UV) radiation from the sun can cause skin cancer, however insufficient exposure to sunlight has a detrimental effect on production of Vitamin D. In the construction industry there are onsite proactive behaviours for safety, but sun-safety remains a low priority. There is limited research on understanding the barriers to adopting sun-safe behaviours and the association this may have with Vitamin D production...
February 15, 2018: BMC Public Health
https://www.readbyqxmd.com/read/29419941/toward-the-full-spectrum-of-genes-for-human-skin-colour
#4
Richard A Sturm, David L Duffy
Humans across the globe shows a remarkable diversity in colouration of skin, hair and eyes (Jablonski & Chaplin, 2017) reflecting adaption of pigmentation genes within populations to their environment (Sturm & Duffy, 2012), as well as other evolutionary forces. Skin colour is highly correlated with incident levels of solar UV, and this has led to hypotheses that the need for vitamin D synthesis and protection from photolysis of folate are major balancing selective pressures modulating melanogenesis in the epidermis necessary for both healthy bones at high Northern latitudes experiencing low solar irradiance, but also shielding the skin from the high equatorial sun exposure...
February 8, 2018: Pigment Cell & Melanoma Research
https://www.readbyqxmd.com/read/29409825/the-impact-of-air-pollutants-uv-exposure-and-geographic-location-on-vitamin-d-deficiency
#5
Edris Hoseinzadeh, Parisa Taha, Chiang Wei, Hatam Godini, Ghulam Md Ashraf, Mahmoud Taghavi, Mohammad Miri
Vitamin D (VD) is an important nutrient for preventing several chronic diseases, and vitamin D deficiency (VDD) causes many diseases. Air pollution has been reported as one of the most significant factors that causes VDD. Some epidemiological studies have evaluated VDD prevalence, and presented air pollution as a potential cause of VDD. In addition, recent case studies have found that VDD is associated with air pollutants. Nearly all reports agree that air pollution affects VD levels by reducing sun exposure, especially UVB radiation...
February 1, 2018: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/29406999/serum-cholecalciferol-may-be-a-better-marker-of-vitamin-d-status-than-25-hydroxyvitamin-d
#6
Rolf Jorde, G Grimnes
Vitamin D is produced in the skin upon sun-exposure or obtained through the diet. Vitamin D is hydroxylated to 25-hydroxyvitamin D (25(OH)D) in the liver and to the active form 1,25-dihydroxyvitamin D (1,25(OH) 2 D) in the kidneys. To exert its effect 1,25(OH) 2 D has to bind to the nuclear vitamin D receptor VDR. Lack of vitamin D leads to rickets in children and to osteomalacia in adults. 25(OH)D is used as a marker of a subject's vitamin D status. Low serum 25(OH)D levels are associated with a number of diseases, risk factors for disease and increased mortality...
February 2018: Medical Hypotheses
https://www.readbyqxmd.com/read/29395372/a-high-whey-protein-vitamin-d-and-e-supplement-preserves-muscle-mass-strength-and-quality-of-life-in-sarcopenic-older-adults-a%C3%A2-double-blind-randomized-controlled-trial
#7
Yacong Bo, Changfeng Liu, Zhe Ji, Ruihong Yang, Qianqian An, Xueyuan Zhang, Jie You, Dandan Duan, Yafei Sun, Yiwei Zhu, Han Cui, Quanjun Lu
OBJECTIVE: Sarcopenia, an age-related decline of muscle mass, strength, and physical function, was associated with falls, frailty, and poor quality of life. The aim of the current study is to examine the effect of nutritional supplement containing whey protein, vitamin D and E on measures of sarcopenia. METHODS: A total of 60 sarcopenic older adult subjects participated in the current randomized, double-blind, placebo-controlled (iso-caloric control product) trial for 6 months...
January 9, 2018: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/29393043/new-determinants-for-gallstone-disease
#8
Daniel Mønsted Shabanzadeh
Gallstone disease is highly prevalent in Denmark and other countries of northern Europe, and cholecystectomy for the treatment of clinical gallstone disease is one the most frequently performed surgical procedures. Research efforts for the identification of mechanisms involved in gallstone formation have a long history and the most established include bile cholesterol saturation, gallbladder motor function, and the enterohepatic circulation of secondary bile salts produced by fecal microbiota. A small number of determinants that are believed to affect these mechanisms have been identified until now...
February 2018: Danish Medical Journal
https://www.readbyqxmd.com/read/29391005/parents-knowledge-attitudes-and-beliefs-regarding-sun-protection-in-children-a-qualitative-study
#9
Zoe Littlewood, Sheila Greenfield
BACKGROUND: Childhood is a critical period for sun protection, when the skin is particularly susceptible to the carcinogenic effects of ultraviolet radiation. Children are dependent upon parents to implement sun protective measures. Existing qualitative research exploring parents' attitudes and beliefs underpinning children's sun protection is from Australia, which has the highest melanoma incidence rates globally, and thus benefits from widespread sun protection awareness campaigns. Parents' sun protective behaviour may, therefore, differ between Australia and the UK...
February 1, 2018: BMC Public Health
https://www.readbyqxmd.com/read/29385741/calcitriol-inhibits-hcv-infection-via-blockade-of-activation-of-ppar-and-interference-with-endoplasmic-reticulum-associated-degradation
#10
Yu-Min Lin, Hung-Yu Sun, Wen-Tai Chiu, Hui-Chen Su, Yu-Chieh Chien, Lee-Won Chong, Hung-Chuen Chang, Chyi-Huey Bai, Kung-Chia Young, Chiung-Wen Tsao
Vitamin D has been identified as an innate anti-hepatitis C virus (HCV) agent but the possible mechanisms for this issue remain unclear. Here, we clarified the mechanisms of calcitriol-mediated inhibition of HCV infection. Calcitriol partially inhibited HCV infection, nitric oxide (NO) release and lipid accumulation in Huh7.5 human hepatoma cells via the activation of vitamin D receptor (VDR). When cells were pretreated with the activators of peroxisome proliferator-activated receptor (PPAR)-α (Wy14643) and -γ (Ly171883), the calcitriol-mediated HCV suppression was reversed...
January 30, 2018: Viruses
https://www.readbyqxmd.com/read/29385507/vitamin-d-status-of-female-uae-college-students-and-associated-risk-factors
#11
Laila F Nimri
Objective: Vitamin D deficiency is now recognized as a pandemic with implications for bone health and chronic diseases. The study investigated the vitamin D status and risk factors of subnormal serum vitamin D levels in female college students. Design: Cross-sectional study. Setting: American University of Sharjah, United Arab Emirate. Serum 25-hydroxyvitamin D (25(OH)D) levels were measured for the participating female undergraduate college students using a radioimmunoassay kit...
January 27, 2018: Journal of Public Health
https://www.readbyqxmd.com/read/29381012/does-an-increase-in-vitamin-d-concentrations-have-a-clear-positive-significance-in-reducing-the-scoring-atopic-dermatitis-scores-in-children-with-atopic-dermatitis
#12
Weitao Zhang, Liyang Lian, Long Qin, Liping Sun, Yongfeng Wang, Pengjun Zhou
No abstract text is available yet for this article.
January 29, 2018: Minerva Pediatrica
https://www.readbyqxmd.com/read/29374755/the-winding-path-towards-an-inverse-relationship-between-sun-exposure-and-all-cause-mortality
#13
REVIEW
Pelle G Lindqvist
For a long time, skin cancer has been known to be related to extensive UV exposure. New emerging data have, however, shown low UV exposure/low vitamin D levels to be related to increased mortality rate due to skin cancer. In addition, low sun exposure habits in regions of low solar intensity have been shown to be a major risk factor for all-cause mortality in the same range as that for smoking. This is mainly due to lower all-cause mortality due to cardiovascular disease (CVD) and non-CVD/non-cancer disease among women with active sun exposure...
February 2018: Anticancer Research
https://www.readbyqxmd.com/read/29374326/investigating-the-bone-mineral-density-in-children-with-solid-tumors-in-southern-iran-a-case-control-study
#14
Forough Saki, Sezaneh Haghpanah, Tahereh Zarei, Mohammad Hossein Dabbaghmanesh, Gholamhossein Ranjbar Omrani, Mohammadreza Bordbar
Along with increasing childhood cancer survival, there is increasing concern about its chronic complications. We showed that 20.5 and 45.9% of children with solid tumors in southern Iran had low bone mass for chronological age in lumbar and femoral area, which was associated with serum ferritin and hemoglobin. 52.4% of these children had vitamin D deficiency, as well. PURPOSE/INTRODUCTION: Along with increasing the childhood cancer survival, there is increasing concern about the chronic complications of the disease and the related therapies...
January 26, 2018: Archives of Osteoporosis
https://www.readbyqxmd.com/read/29351230/comparison-of-antioxidative-effects-of-insect-tea-and-its-raw-tea-kuding-tea-polyphenols-in-kunming-mice
#15
Xin Zhao, Jia-Le Song, Ruokun Yi, Guijie Li, Peng Sun, Kun-Young Park, Huayi Suo
Kudingcha is a traditional Chinese tea, and insect tea is a special drink produced by the metabolism of insect larvae using the raw Kuding tea. Insect tea polyphenols (ITP) and its raw tea (Kuding tea) polyphenols (KTP) are high-purity polyphenols extracted by centrifuge precipitation. The present study was designed to compare the antioxidative effects of insect tea polyphenols (ITP) and its raw tea (Kuding tea) polyphenols (KTP) on d-galactose-induced oxidation in Kunming (KM) mice. KM mice were treated with ITP (200 mg/kg) and KTP (200 mg/kg) by gavage, and vitamin C (VC, 200 mg/kg) was also used as a positive control by gavage...
January 19, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29333826/vitamin-d-deficiency-in-pediatric-clinical-practice
#16
Gustavo Cediel, Johanna Pacheco-Acosta, Carlos CastiUo-Durdn
INTRODUCTION: Vitamin D research suggests it has a role in disorders other than bone metabolism. OBJECTIVE: To update the information on vitamin D deficiency (VDD) in pediatric clinical disorders. METHODS: Search in virtual libraries, giving priority to clinical and longitudinal studies and meta-analyses on VDD in the pediatric age group published in the past 20 years. The terms "vitamin D deficiency", "children and adolescents" (both in Spanish and English) were used as search descriptors...
February 1, 2018: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/29318595/the-early-repigmentation-pattern-of-vitiligo-is-related-to-the-source-of-melanocytes-and-by-the-choice-of-therapy-a-retrospective-cohort-study
#17
Ke Yang, Xixi Xiong, Gorkhali Pallavi, Yuting Ling, Fei Ding, Weiwei Duan, Weiling Sun, Gaozhong Ding, Qingli Gong, Wenyuan Zhu, Yan Lu
BACKGROUND: Patients with vitiligo present with different repigmentation patterns in the early recovery stage. OBJECTIVES: To analyze the relationships between early repigmentation patterns in vitiliginous patches, their clinical characteristics, and therapeutic choices. METHODS: Patients with vitiligo seen in the Department of Dermatology, The First Affiliated Hospital of Nanjing Medical University from 2010 to 2015, were included, and their clinical records, especially photographs and medical treatments, were reviewed...
January 10, 2018: International Journal of Dermatology
https://www.readbyqxmd.com/read/29305131/prevalence-and-predictors-of-low-serum-25-hydroxyvitamin-d-among-female-african-american-breast-cancer-survivors
#18
Patricia Sheean, Claudia Arroyo, Jennifer Woo, Linda Schiffer, Melinda Stolley
BACKGROUND: African-American breast cancer survivors commonly demonstrate low serum 25-hydroxyvitamin D (25(OH)D). Decreased cutaneous conversion, high levels of adiposity, and even breast cancer treatment may influence vitamin D status. Previous investigations have analyzed African-American women in aggregate with other breast cancer survivors and have not comprehensively addressed these influential factors. OBJECTIVES: To determine the prevalence of low serum 25(OH)D in an exclusively African-American cohort of female breast cancer survivors with overweight/obesity and to evaluate the role of ultraviolet (UV) light exposure, body composition, and dietary sources of vitamin D on serum 25(OH)D levels...
January 2, 2018: Journal of the Academy of Nutrition and Dietetics
https://www.readbyqxmd.com/read/29280659/prevalence-of-hypovitaminosis-d-and-associated-factors-in-adolescent-students-of-a-capital-of-northeastern-brazil
#19
Euarda Pontes Dos Santos Araújo, Dayanna Joyce Marques Queiroz, Juliana Padilha Ramos Neves, Lavoisiana Mateus de Lacerda, Maria Da Conceição Rodrigues Gonçalves, Alice Teles de Carvalho
BACKGROUND: Hypovitaminosis D is a frequent problem in the world and can be influenced by several factors. OBJECTIVE: To estimate the prevalence of hypovitaminosis D and associated factors in adolescent students of a capital city of northeastern Brazil. METHODS: Cross-sectional epidemiological study assessing 220 school adolescents of both sexes aged 15 to 19 years. A questionnaire was applied to assess sociodemographic (skin color, mother's education and receiving social benefits) and behavioral data (number of hours of sleep per day, sun exposure, physical activity and dietary vitamin D intake)...
November 16, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/29273135/complex-relationships-between-vitamin-d-and-allergic-sensitization-among-puerto-rican-2-year-old-children
#20
Srimathi Kannan, Matthew S Perzanowski, Harish B Ganguri, Dolores Acevedo-Garcia, Luis M Acosta, Molly Spatcher, Adnan Divjan, Ginger L Chew
BACKGROUND: In the United States, Puerto Ricans have a higher prevalence of asthma than other Latino ethnicities. Low vitamin D levels for children living in northern climates could be a factor. OBJECTIVE: To assess serum 25-hydroxyvitamin D [25(OH)D] distributions (a marker of vitamin D) and associations among vitamin D, allergic sensitization, early wheeze, and home/demographic factors. METHODS: Puerto Rican infants born in New York City, with a maternal history of atopy, were enrolled in a birth cohort...
January 2018: Annals of Allergy, Asthma & Immunology
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