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https://www.readbyqxmd.com/read/28944704/the-relationship-between-vitamin-d-level-and-erectile-dysfunction-in-patients-with-type-2-diabetes-mellitus
#1
Sema Basat, Rıdvan Sivritepe, Damla Ortaboz, Ecem Sevim Çalık, Eyüp Veli Küçük, Berkan Şimşek, Sabri Atay, Arzu Çalışgan
Recent studies have suggested that a relationship could exist between 25-hydroxyvitamin D [25(OH)D] deficiency and erectile dysfunction (ED). The present study evaluated the relationship between 25(OH)D levels and ED in male patients with type 2 diabetes mellitus (DM). The study included 98 patients with type 2 DM aged between 18-80 years. The International Index of Erectile Function (IIEF-5) Questionnaire was administered. The patients were divided into three groups according to IIEF-5 scoring: IIEF-5 score between 5-10, severe ED; IIEF-5 score between 11-20, moderate ED; IIEF-5 score between 21-25, no ED...
September 23, 2017: Aging Male: the Official Journal of the International Society for the Study of the Aging Male
https://www.readbyqxmd.com/read/28944088/loss-of-the-vitamin-d-receptor-in-human-breast-and-prostate-cancers-strongly-induces-cell-apoptosis-through-downregulation-of-wnt-%C3%AE-catenin-signaling
#2
Yu Zheng, Trupti Trivedi, Ruby Cy Lin, Colette Fong-Yee, Rick Nolte, Jeline Manibo, Yunzhao Chen, Musharraf Hossain, Konstantin Horas, Colin Dunstan, Hong Zhou, Markus J Seibel
Vitamin D co-regulates cell proliferation, differentiation and apoptosis in numerous tissues, including cancers. The known anti-proliferative and pro-apoptotic actions of the active metabolite of vitamin D, 1,25-dihydroxy-vitamin D [1,25(OH)2D] are mediated through binding to the vitamin D receptor (VDR). Here, we report on the unexpected finding that stable knockdown of VDR expression in the human breast and prostate cancer cell lines, MDA-MB-231 and PC3, strongly induces cell apoptosis and inhibits cell proliferation in vitro...
2017: Bone Research
https://www.readbyqxmd.com/read/28944060/one-ion-to-rule-them-all-combined-antibacterial-osteoinductive-and-anticancer-properties-of-selenite-incorporated-hydroxyapatite
#3
Vuk Uskoković, Maheshwar Adiraj Iyer, Victoria M Wu
Although hydroxyapatite (HAp) has been doped with dozens of different ions, the quest for an ion imparting a combination of properties conducive to bone healing is still ongoing. Because of its protean potency and the similarity in size and shape to the phosphate tetrahedron, selenite ion presents a natural ionic substitute in HAp. The incorporation of selenite into synthetic HAp using two different methods - co-precipitation and ion-exchange sorption - was studied for its effect on crystal properties and on a triad of biological responses: antibacterial, anticancer and osteoinductive...
2017: Journal of Materials Chemistry. B, Materials for Biology and Medicine
https://www.readbyqxmd.com/read/28943594/effect-of-rosuvastatin-on-cholesterol-efflux-capacity-and-endothelial-function-in-type-2-diabetes-mellitus-and-dyslipidemia
#4
Kyong Yeun Jung, Kyoung Min Kim, Sun Kyoung Han, Han Mi Yun, Tae Jung Oh, Sung Hee Choi, Kyong Soo Park, Hak Chul Jang, Soo Lim
BACKGROUND: Quality and quantity of high-density lipoprotein cholesterol (HDL-C) may be associated with cardiovascular risk. We investigated the effect of rosuvastatin on cholesterol efflux (CE) for HDL function and vascular health.Methods and Results:We enrolled 30 dyslipidemic patients with type 2 diabetes mellitus and 20 healthy subjects as controls. Vascular health was assessed on flow-medicated dilation (FMD), nitroglycerin-induced dilatation of the brachial artery and carotid artery intima-media thickness (cIMT)...
September 22, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28942549/the-effect-of-vitamin-d-status-on-pain-lower-limb-strength-and-knee-function-during-balance-recovery-in-people-with-knee-osteoarthritis-an-exploratory-study
#5
Pazit Levinger, Rezaul Begg, Kerrie M Sanders, Hanatsu Nagano, Calum Downie, Aaron Petersen, Alan Hayes, Flavia Cicuttini
The association between vitamin D and muscle function associated with balance recovery and falls in people with knee osteoarthritis is unclear. Those with vitamin D insufficiency demonstrated poorer knee function during balance recovery, greater pain and locomotor dysfunction. Vitamin D insufficiency may have an adverse effect on muscle power function. PURPOSE: Low vitamin D status in people with knee osteoarthritis (OA) is often reported to be associated with increased pain and locomotor dysfunction...
September 23, 2017: Archives of Osteoporosis
https://www.readbyqxmd.com/read/28941998/vitamin-d3-supplementation-decreases-a-unique-circulating-monocyte-cholesterol-pool-in-patients-with-type-2-diabetes
#6
Amy E Riek, Jisu Oh, Isra Darwech, Veronica Worthy, Xiaobo Lin, Richard E Ostlund, Rong M Zhang, Carlos Bernal-Mizrachi
Cross-sectional studies indicate consistent associations between low 25(OH)D concentration and increased risk of cardiovascular disease (CVD), but results of randomized control trials (RCTs) are mixed. However, the majority of the RCTs do not focus on type 2 diabetics, potentially obscuring the effects of vitamin D in this population. In vitro 1,25(OH)2D3 downregulates macrophage cholesterol deposition, but the in vivo effects are unknown. To explore potential mechanisms of the effects of vitamin D on CVD risk in patients with type 2 diabetes, we isolated monocytes in a subset of 26 patients from our RCT of diabetics with baseline serum 25(OH)D <25ng/mL randomized to vitamin D3 4000 IU/day or placebo for 4 months...
September 20, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28941306/influence-of-various-factors-on-circulating-25-oh-vitamin-d-concentrations-in-dogs-with-cancer-and-healthy-dogs
#7
N Weidner, J P Woods, P Conlon, K A Meckling, J L Atkinson, J Bayle, A J Makowski, R L Horst, A Verbrugghe
BACKGROUND: Low blood 25-hydroxyvitamin D (25(OH)D) concentrations have been associated with cancer in dogs. Little research has examined what other factors may affect 25(OH)D concentrations. OBJECTIVES: (1) To determine whether the presence of cancer (lymphoma, osteosarcoma, or mast cell tumor [MCT]) in dogs is associated with plasma 25(OH)D concentrations and (2) identify other factors related to plasma 25(OH)D concentrations in dogs. ANIMALS: Dogs newly diagnosed with osteosarcoma (n = 21), lymphoma (n = 27), and MCT (n = 21) presented to a tertiary referral oncology center, and healthy, client-owned dogs (n = 23)...
September 23, 2017: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/28939424/maternal-early-pregnancy-vitamin-d-status-in-relation-to-low-birth-weight-and-small-for-gestational-age-offspring
#8
Huiping Wang, Yanfeng Xiao, Lan Zhang, Qiong Gao
Maternal vitamin D deficiency is an independent risk factor for fetal growth. We examined the associations between maternal vitamin D status (defined by 25-hydroxyvitamin D [25(OH)D]) at the first prenatal visit and measures of newborn and placental weight, in a large China cohort of singleton, term, live births. From July 2015 to June 2016, women delivering singleton, term, live births with 25(OH)D measured at a first prenatal visit (N=747). Birth weight, placental weight, the placental to fetal weight ratio, and small for gestational age (SGA) were measured...
September 19, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28939209/calcium-and-bone-metabolism-indices
#9
Lu Song
Calcium and inorganic phosphate are of critical importance for many body functions, thus the regulations of their plasma concentrations are tightly controlled by the concerted actions of reabsorption/excretion in the kidney, absorption in the intestines, and exchange from bone, the major reservoir for calcium and phosphate in the body. Parathyroid hormone (PTH) and 1,25-dihydroxyvitamin D (1,25(OH)2D) control calcium homeostasis, whereas PTH, 1,25(OH)2D, and bone-derived fibroblast growth factor 23 (FGF 23) control phosphate homeostasis...
2017: Advances in Clinical Chemistry
https://www.readbyqxmd.com/read/28938446/vitamin-d-and-testosterone-in-healthy-men-a-randomized-controlled-trial
#10
Elisabeth Lerchbaum, Stefan Pilz, Christian Trummer, Verena Schwetz, Oliver Pachernegg, Annemieke C Heijboer, Barbara Obermayer-Pietsch
Context: Available evidence shows an association of vitamin D with androgen levels in men. However, results from preliminary randomized controlled trials (RCTs) are conflicting. Objective: To evaluate whether vitamin D supplementation increases total testosterone (TT) levels in healthy men. Design: The Graz Vitamin D&TT-RCT is a single-center, double-blind, randomized placebo-controlled trial conducted between December 2012 and January 2017...
August 29, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28938443/microbiota-dependent-induction-of-colonic-cyp27b1-is-associated-with-colonic-inflammation-implication-of-locally-produced-1-25-dihydroxyvitamin-d-in-inflammatory-regulation-in-the-colon
#11
Jie Du, Xinzhi Wei, Xin Ge, Yinyin Chen, Yan Chun Li
Our recent studies demonstrated that intestinal epithelial vitamin D receptor (VDR) signaling plays a critical role in regulating colonic inflammation by protecting epithelial barrier integrity. Epithelial VDR is down-regulated in colitis, but how mucosal inflammation affects local 1,25-dihydroxyvitamin D (1,25(OH)2D3) production is unknown. Here we showed that Cyp27b1, a cytochrome P450 enzyme required for 1,25(OH)2D3 biosynthesis, is highly induced in colonic mucosa in inflammatory response. While VDR is reduced in colon biopsies from patients with ulcerative colitis, Cyp27b1 is markedly up-regulated in these samples...
September 18, 2017: Endocrinology
https://www.readbyqxmd.com/read/28938396/transgenic-expression-of-the-vitamin-d-receptor-restricted-to-the-ileum-cecum-and-colon-of-vitamin-d-receptor-knockout-mice-rescues-vitamin-d-receptor-dependent-rickets
#12
Puneet Dhawan, Vaishali Veldurthy, Ghassan Yehia, Connie Hsaio, Angela Porta, Ki-In Kim, Nishant Patel, Liesbet Lieben, Lieve Verlinden, Geert Carmeliet, Sylvia Christakos
Although the intestine plays the major role in 1,25-dihydroxyvitamin D3 (1,25(OH)2D3) action on calcium homeostasis, the mechanisms involved remain incompletely understood. The established model of 1,25(OH)2D3 regulated intestinal calcium absorption postulates a critical role for the duodenum. However it is the distal intestine where 70 -80% of the ingested calcium is absorbed. In order to test directly the role of 1,25(OH)2D3 and the vitamin D receptor (VDR) in the distal intestine, 3 independent knockout (KO) /transgenic (TG) lines expressing VDR exclusively in the ileum, cecum and colon were generated by breeding VDR KO mice with TG mice expressing human (h)VDR under the control of the 9...
September 11, 2017: Endocrinology
https://www.readbyqxmd.com/read/28937066/relationship-of-insulin-resistance-to-vitamin-d-status-in-children-with-nondiabetic-chronic-kidney-disease
#13
Seçil Conkar, Sevgi Mir
Insulin Resistance is common in patients with mild-to-moderate stage chronic kidney disease (CKD), even when the glomerular filtration rate is within the normal range. This study aimed to investigate the association of IR and 25-hydroxyvitamin D levels. In this study, we evaluated the frequency of IR in predialysis patients and the association with 25-hydroxyvitamin (OH)D levels. A total of 32 non-diabetic patients with predialysis were included in the study. Homeostasis model assessment for insulin resistance (HOMA-IR) index was calculated to show presence of IR...
September 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28936809/association-between-vitamin-d-and-carboxy-terminal-cross-linked-telopeptide-of-type-i-collagen-in-children-during-growth-hormone-replacement-therapy
#14
Ewelina Witkowska-Sędek, Anna Stelmaszczyk-Emmel, Anna Kucharska, Urszula Demkow, Beata Pyrżak
Growth hormone and insulin-like growth factor-1 (IGF-1) play a crucial role in the regulation of bone turnover. Adequate vitamin D status supports proper bone remodeling, leading to normal longitudinal bone growth and normal peak bone mass. The aim of this study was to evaluate the association between serum 25-hydroxyvitamin D [25(OH)D] and carboxy-terminal cross-linked telopeptide of type I collagen (ICTP) in children and adolescents with growth hormone deficiency at baseline and during recombinant human growth hormone (rhGH) replacement therapy...
September 22, 2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28936757/vitamin-d-deficiency-affects-thyroid-autoimmunity-and-dysfunction-in-iodine-replete-area-korea-national-health-and-nutrition-examination-survey
#15
Mijin Kim, Eyun Song, Hye-Seon Oh, Suyeon Park, Hyemi Kwon, Min Ji Jeon, Won Gu Kim, Won Bae Kim, Young Kee Shong, Tae Yong Kim
PURPOSE: We evaluated the effects of vitamin D levels and iodine intake on thyroid autoimmunity and dysfunction in the Korean population. METHODS: In this nationwide population-based study, data were obtained from the Korea National Health and Nutrition Examination Survey VI-1 and 2 (2013 and 2014), which was the first nationwide survey that measured both serum 25-hydroxy vitamin D [25(OH)D] levels and urinary iodine concentrations (UICs) in Korea. A total of 4181 participants who underwent laboratory tests for thyroid function, serum 25(OH)D levels, and UICs were included...
September 21, 2017: Endocrine
https://www.readbyqxmd.com/read/28935550/vitamin-d-status-in-relation-to-physical-performance-falls-and-fractures-in-the-longitudinal-aging-study-amsterdam-a-reanalysis-of-previous-findings-using-standardized-serum-25-hydroxyvitamin-d-values
#16
N M Van Schoor, M W Heymans, P Lips
The Longitudinal Aging Study Amsterdam (LASA) is an ongoing prospective cohort study in a representative sample of Dutch older persons. In previous LASA studies, lower serum 25-hydroxyvitamin D (25(OH)D) values, as assessed by a competitive protein binding assay or radioimmunoassay, have been associated with decreased physical functioning, falls and fractures. Recently, serum 25(OHD) values in LASA were standardized using the Vitamin D Standardization Program (VDSP) protocol as part of the European ODIN project...
September 18, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28935523/an-outbreak-of-burkholderia-cepacia-pseudobacteraemia-caused-by-intrinsically-contaminated-commercial-0-5-chlorhexidine-solution-in-neonatal-intensive-care-units
#17
Je Eun Song, Yee Gyung Kwak, Tae Hyun Um, Chong Rae Cho, Sollip Kim, In Sook Park, Jong Hee Hwang, Namhee Kim, Gang-Bok Oh
BACKGROUND: Burkholderia cepacia is intrinsically resistant to certain antiseptics. We experienced a sudden increase in the frequency of isolation of B. cepacia from blood cultures in a neonatal intensive care unit (NICU) of a university-affiliated hospital. AIM: An investigation was conducted to identify the source and to intervene in the ongoing infections. METHODS: The cases were defined as patients with positive blood cultures for B. cepacia in a NICU between November 2014 and January 2015...
September 18, 2017: Journal of Hospital Infection
https://www.readbyqxmd.com/read/28934718/urinary-bpa-and-phthalate-metabolite-concentrations-and-plasma-vitamin-d-levels-in-pregnant-women-a-repeated-measures-analysis
#18
Lauren E Johns, Kelly K Ferguson, David E Cantonwine, Thomas F McElrath, Bhramar Mukherjee, John D Meeker
BACKGROUND: In addition to its well-established role in maintaining skeletal health, vitamin D has essential regulatory functions in female reproductive and pregnancy outcomes. Phthalates and bisphenol A (BPA) are endocrine disruptors, and previous research has suggested that these chemical agents may disrupt circulating levels of total 25(OH)D in adults. OBJECTIVES: We investigated the relationships between repeated measures of urinary phthalate metabolites and BPA and circulating total 25(OH)D in a prospective cohort of pregnant women...
August 31, 2017: Environmental Health Perspectives
https://www.readbyqxmd.com/read/28933742/vitamin-d-supplementation-improves-quality-of-life-and-physical-performance-in-osteoarthritis-patients
#19
Pacharee Manoy, Pongsak Yuktanandana, Aree Tanavalee, Wilai Anomasiri, Srihatach Ngarmukos, Thanathep Tanpowpong, Sittisak Honsawek
(1) Background: Lower levels of serum 25-hydroxyvitamin D (25(OH)D) are common in osteoarthritis (OA) patients. However, the effect of vitamin D supplementation on muscle strength and physical performance remains unclear. This study will investigate the effects of vitamin D₂ supplementation on muscle strength and physical performance in knee OA patients; (2) Methods: One hundred and seventy-five primary knee OA patients with low levels of serum 25(OH)D (<30 ng/mL) received 40,000 IU vitamin D₂ (ergocalciferol) per week for six months...
July 26, 2017: Nutrients
https://www.readbyqxmd.com/read/28933265/the-role-of-vitamin-d-in-multiple-sclerosis-biology-biochemistry-epidemiology-and-potential-roles-in-treatment
#20
Steve Simpson, Ingrid van der Mei, Bruce Taylor
Multiple sclerosis (MS) is a progressive, demyelinating condition of the central nervous system, manifesting in loss or alterations in function of sensory, motor and cognitive function. Of the various environmental and behavioural risk factors identified as playing a role in MS onset and progression, perhaps none has been as consistent as vitamin D. OBJECTIVE: In this review, we will endeavour to present a general background on the role of vitamin D in human health and particularly in MS, as well as the substantial epidemiological evidence in support of vitamin D's role in MS...
September 21, 2017: Medicinal Chemistry
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