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https://www.readbyqxmd.com/read/29319217/the-science-behind-skin-care-moisturizers
#1
REVIEW
Zoe D Draelos
Moisturizers provide functional skin benefits, such as making the skin smooth and soft, increasing skin hydration, and improving skin optical characteristics; however, moisturizers also function as vehicles to deliver ingredients to the skin. These ingredients may be vitamins, botanical antioxidants, peptides, skin-lightening agents, botanical anti-inflammatories, or exfoliants. This discussion covers the science of moisturizers.
January 10, 2018: Journal of Cosmetic Dermatology
https://www.readbyqxmd.com/read/29318983/prevalence-and-determinants-of-vitamin-d-deficiency-in-the-third-trimester-of-pregnancy-a-multicentre-study-in-switzerland
#2
Jean-Philippe Krieger, Sophie Cabaset, Claudia Canonica, Ladina Christoffel, Aline Richard, Therese Schröder, Begoña Lipp von Wattenwyl, Sabine Rohrmann, Katharina Quack Lötscher
Vitamin D deficiency during pregnancy is associated with negative health consequences for mothers and their infants. Data on the vitamin D status of pregnant women in Switzerland are scarce. A three-centre study was conducted in the obstetric departments of Zurich, Bellinzona and Samedan (Switzerland) to investigate the prevalence and determinants of vitamin D deficiency (serum 25-hydroxyvitamin D (25(OH)D)<50 nmol/l) in 3rd-trimester pregnant women living in Switzerland (n 305), and the correlation between 25(OH)D in pregnant women and their offspring at birth (n 278)...
January 10, 2018: British Journal of Nutrition
https://www.readbyqxmd.com/read/29310423/phloxine-o-a-cosmetic-colorant-suppresses-the-expression-of-thymic-stromal-lymphopoietin-and-acute-dermatitis-symptoms-in-mice
#3
Hye Eun Lee, Gabsik Yang, Kyu-Bong Kim, Byung-Mu Lee, Joo Young Lee
Cosmetics are primarily applied to the skin; therefore, the association of cosmetic dyes with skin diseases or inflammation is a topic of great interest. Thymic stromal lymphopoietin (TSLP) is an interleukin 7-like cytokine that activates dendritic cells to promote Th2 inflammatory immune responses. TSLP is highly expressed in keratinocytes under inflammatory conditions, which suggests that it may play a critical role in the development of skin diseases, such as atopic dermatitis. Therefore, we investigated whether cosmetic dyes influenced the production of TSLP by keratinocytes...
January 9, 2018: Biomolecules & Therapeutics
https://www.readbyqxmd.com/read/29306952/vitamin-d-and-the-pathophysiology-of-inflammatory-skin-diseases
#4
Meenakshi Umar, Konduru S Sastry, Fatima Al Ali, Moza Al-Khulaifi, Ena Wang, Aouatef I Chouchane
BACKGROUND: Vitamin D is a secosteroid, which was initially known for its skeletal role; however, in recent years, its functions in different organs have been increasingly recognized. In this review, we will provide an overview of vitamin D functions in the skin physiology with specific focus on its role in certain inflammatory skin conditions such as psoriasis and atopic dermatitis. METHODS: A comprehensive literature search was carried out in PubMed and Google Scholar databases using keywords like "vitamin D," "skin," "atopic dermatitis," and "psoriasis...
January 6, 2018: Skin Pharmacology and Physiology
https://www.readbyqxmd.com/read/29305131/prevalence-and-predictors-of-low-serum-25-hydroxyvitamin-d-among-female-african-american-breast-cancer-survivors
#5
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/29304901/indoor-tanning-a-gianus-bifrons-vitamin-d-and-human-cancer
#6
Giuseppe Lippi, Gianfranco Cervellin, Elisa Danese
Despite it is now undeniable that indoor tanning exposure is associated with a number of skin cancers, its favorable effects on vitamin D status may bear some underestimated and currently unexplored health benefits. Vitamin D is a fat-soluble vitamin naturally present in a limited number of foods, the concentration of which largely depends on ultraviolet (UV) B sources exposure in humans. A strong, graded, and inverse association has been documented between serum vitamin D and the risk of developing certain types of malignancy, especially colorectal, breast, lung, bladder, and kidney cancers...
2018: Advances in Clinical Chemistry
https://www.readbyqxmd.com/read/29282177/vitamin-d-deficiency-and-atopic-dermatitis-consider-disease-race-and-body-mass
#7
Kavita Darji, Courtney Tobin, Zachary T Bryan, Mathew Jansenn, Eric Armbrecht, Elaine Siegfried
Vitamin D deficiency causes rickets, but has been associated with various diseases, including atopic dermatitis (AD). This study analyzes serum vitamin D in pediatric medical center patients with AD and potential confounding factors. At Cardinal Glennon Children's Hospital, charts of 665 children with serum 25-hydroxyvitamin D levels taken between 2009 and 2013 were retrospectively reviewed. Defining vitamin D deficiency as <20 ng/mL, neither average 25-hydroxyvitamin D nor deficiency prevalence varied among disease groups, except for cystic fibrosis (CF), which demonstrated significantly higher average vitamin D and lower deficiency prevalence...
2017: Skinmed
https://www.readbyqxmd.com/read/29280659/prevalence-of-hypovitaminosis-d-and-associated-factors-in-adolescent-students-of-a-capital-of-northeastern-brazil
#8
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/29280010/role-of-vitamin-d-deficiency-in-systemic-lupus-erythematosus-incidence-and-aggravation
#9
Tohid Hassanalilou, Leila Khalili, Saeid Ghavamzadeh, Ali Shokri, Laleh Payahoo, Yaser Khaje Bishak
Vitamin D is one of the main groups of sterols; playing an important role in phospho-calcic metabolism. The conversion of 7-dehydrocholesterol to pre- vitamin D3 in the skin, through solar ultraviolet B radiation, is the main source of vitamin D. Since lupus patients are usually photosensitive, the risk of developing vitamin D deficiency in is high in this population. Although evidences showed the connotation between systemic lupus erythematosus (SLE) and vitamin D through which SLE can lead to lower vitamin D levels, it is also important to consider the possibility that vitamin D deficiency may have a causative role in SLE etiology...
December 26, 2017: Auto- Immunity Highlights
https://www.readbyqxmd.com/read/29258769/calcium-and-vitamin-d-in-human-health-hype-or-real
#10
REVIEW
Sunil J Wimalawansa, DSc Mohammed S Razzaque, Nasser M Al-Daghri
The incidence and the prevalence of vitamin D deficiency are increasing worldwide. It is estimated that over 50% of population in the world have low in vitamin D (i.e., hypovitaminosis D; levels below 30 ng/mL). 80% of our vitamin D requirement comes from the ultraviolet rays from sunlight, and for the remainder, we rely from the diet and supplements. The latter become important when one is exposing to less than optimal amounts of sunlight, inability of the skin to generate vitamin D efficiently, and/or having secondary causes that leads to increase catabolism of vitamin D...
December 16, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/29247316/development-of-transdermal-vitamin-d3-vd3-delivery-system-using-combinations-of-plga-nanoparticles-and-microneedles
#11
Hye-Gyeong Kim, Deborah L Gater, Yeu-Chun Kim
Although vitamin D3 (VD3), which is the main form of vitamin D, can be produced in human skin under the sunlight, vitamin D deficiency emerged as a major public health problem worldwide. Mainly, oral supplements or vitamin D-fortified foods are distributed to help supplementation of vitamin D. However, those oral methods are limitedly supplied in the Middle East countries, and oral absorption has low efficiency due to many barriers and various changes of conditions along the route. Then, it is recommended to take them every day in order to maintain the adequate serum level of vitamin D...
December 16, 2017: Drug Delivery and Translational Research
https://www.readbyqxmd.com/read/29240856/combining-topical-psoriasis-treatment-to-enhance-systemic-and-phototherapy-a-review-of-the-literature
#12
Jerry Bagel, Linda Stein Gold
<p>Psoriasis is a chronic infammatory skin disease that affects millions of people in the United States as well as worldwide. While there is cur-rently no cure for psoriasis, many treatment options are available. Topical therapies are the mainstay for the majority of patients who have limited or mild psoriasis. Among these medications, topical vitamin D analogs (eg, calcipotriene) and corticosteroids (eg, betamethasone), and these drugs in combination, are the most widely prescribed psoriasis drugs and are the cornerstone of topical therapies...
December 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/29230685/calcitriol-reverses-the-down-regulation-pattern-of-tuberous-sclerosis-complex-genes-in-an-in-vitro-calcification-model
#13
Eraldo Fonseca Dos Santos Junior, Roberta Rodrigues de Lemos Gitirana, Darlene Paiva Bezerra, João Ricardo Mendes de Oliveira
Tuberous sclerosis complex (TSC) is a neurocutaneous syndrome with autosomal dominant inheritance, and most of the cases are related to loss of function of the TSC1 and TSC2 genes. TSC may occur with a wide range of clinical findings and skin, kidney, brain, and heart are the most commonly affected organs. Brain calcifications in TSC are also described and reported as diffuse and without pattern of symmetry or bilaterality. Recently, a new discovery opened the possibility of using vitamin D (VitD) for treating cerebral calcifications...
December 11, 2017: Journal of Molecular Neuroscience: MN
https://www.readbyqxmd.com/read/29219782/preventive-role-of-vitamin-d-in-silica-induced-skin-fibrosis-a-study-in-relation-to-oxidative-stress-and-pro-inflammatory-cytokines
#14
Ashwani Koul, Stanzin Angmo, Sanjay Bharati
The protective effects of vitamin D analogue calcipotriol in silica-induced skin fibrosis were studied in the present study. Male BALB / c mice were divided into four groups; Control, Vitamin D, Silica and Silica+Vitamin D. Silica was administered as a single intradermal injection (40 µg / µL, dissolved in normal saline; particle size 1 - 5 µm) in the hind limbs of animals in Silica & Silica+Vitamin D group. Vitamin D group animals received topical application of 100µL of vitamin D solution (10-7M in Ethanol) daily for 12 weeks...
December 8, 2017: International Journal for Vitamin and Nutrition Research. Journal International de Vitaminologie et de Nutrition
https://www.readbyqxmd.com/read/29217929/maternal-vitamin-d-deficiency-a-culprit-for-hypocalcaemia-induced-myocardial-failure-in-a-four-month-old-infant-a-case-report-from-tikur-anbessa-specialized-hospital-ethiopia
#15
Tamirat Moges, Yemisirach Shiferaw, Tigist Heye
Background: A rare but reversible cause of dilated cardiomyopathy occurs in infants born to vitamin D deficient mothers due to hypocalcaemia. Case Report: We report a case of dilated cardiomyopathy due to hypocalcaemia secondary to maternal vitamin D deficiency in an infant presented with seizure disorder and heart failure. This was a four-month old female infant with respiratory distress and acute heart failure. The cause of her cardiac failure was dilated cardiomyopathy...
May 2017: Ethiopian Journal of Health Sciences
https://www.readbyqxmd.com/read/29215595/the-role-of-vitamin-d-in-non-scarring-alopecia
#16
REVIEW
Agnieszka Gerkowicz, Katarzyna Chyl-Surdacka, Dorota Krasowska, Grażyna Chodorowska
Non-scarring hair loss is a common problem that affects both male and female patients. Since any disturbances in the hair follicle cycle may lead to hair shedding, or alopecia, it is not surprising that the possible role of vitamin D in alopecia was investigated in many studies. Vitamin D has been shown to have many important functions. A growing body of evidence shows that vitamin D and its receptor are responsible for maintaining not only calcium homeostasis but also skin homeostasis. Moreover, vitamin D could also regulate cutaneous innate and adaptive immunity...
December 7, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29204386/identification-of-genotypes-and-allelic-frequencies-of-vitamin-d-receptor-gene-polymorphism-taqi-in-egyptian-melasma-patients
#17
Iman Seleit, Ola Ahmed Bakry, Eman Masoud, Shaimaa Nabil
Background: Melasma is a characteristic pattern of facial hyperpigmentation, occurring primarily on the forehead, cheeks, and chin, in a mask-like distribution. The pathogenesis of melasma is not fully understood. Vitamin D plays a role in skin pigmentation. It exerts its effect through vitamin D receptor (VDR), which is expressed in variable cells including normal melanocytes. Aim and Objective: The aim of the current work was to investigate if VDR gene polymorphism (TaqI) confers susceptibility to melasma in Egyptian patients...
November 2017: Indian Dermatology Online Journal
https://www.readbyqxmd.com/read/29201865/an-inexpensive-high-temporal-resolution-electronic-sun-journal-for-monitoring-personal-day-to-day-sun-exposure-patterns
#18
Nathan J Downs, Alfio V Parisi, Harry Butler, Alex Rawlings, Raja Salem Elrahoumi
Exposure to natural sunlight, specifically solar ultraviolet (UV) radiation contributes to lifetime risks of skin cancer, eye disease, and diseases associated with vitamin D insufficiency. Improved knowledge of personal sun exposure patterns can inform public health policy; and help target high-risk population groups. Subsequently, an extensive number of studies have been conducted to measure personal solar UV exposure in a variety of settings. Many of these studies, however, use digital or paper-based journals (self-reported volunteer recall), or employ cost prohibitive electronic UV dosimeters (that limit the size of sample populations), to estimate periods of exposure...
2017: Frontiers in Public Health
https://www.readbyqxmd.com/read/29182680/differential-activity-of-2-methylene-19-nor-vitamin-d-analogs-on-growth-factor-gene-expression-in-rhino-mouse-skin-and-comparison-to-all-trans-retinoic-acid
#19
Jamie M Ahrens, James D Jones, Nirca J Nieves, Ann M Mitzey, Hector F DeLuca, Margaret Clagett-Dame
While all 2-methylene-19-nor analogs of 1α,25-dihydroxyvitamin D3 (1α,25(OH)2D3) tested produce an increase in epidermal thickness in the rhino mouse, only a subset reduce utricle size (comedolysis). All-trans retinoic acid (atRA) also causes epidermal thickening and a reduction in utricle size in the rhino mouse. We now report that 2-methylene-19-nor-(20S)-1α-hydroxybishomopregnacalciferol (2MbisP), a comedolytic analog, increases epidermal thickening more rapidly than does atRA, while both reduce utricle area at an equal rate...
2017: PloS One
https://www.readbyqxmd.com/read/29182508/ethnic-disparities-in-the-dietary-requirement-for-vitamin-d-during-pregnancy-considerations-for-nutrition-policy-and-research
#20
Karen M O'Callaghan, Mairead E Kiely
Despite the inverse association between skin colour and efficiency of cutaneous vitamin D synthesis, in addition to the widely accepted racial disparity in vitamin D status, populations of ethnic minority are understudied in terms of setting target serum 25-hydroxyvitamin D concentrations and corresponding dietary requirements for vitamin D. In minority groups, prevention of vitamin D deficiency on a population basis is challenging due to the lack of clarity surrounding the metabolism and transport of vitamin D...
November 28, 2017: Proceedings of the Nutrition Society
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