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https://www.readbyqxmd.com/read/28911162/response-to-letter-hypoparathyroidism-less-severe-hypocalcemia-with-treatment-with-vitamin-d2-compared-with-calcitriol
#1
Elizabeth A Streeten
No abstract text is available yet for this article.
September 1, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28911157/letter-to-the-editor-hypoparathyroidism-less-severe-hypocalcemia-with-treatment-with-vitamin-d2-compared-with-calcitriol
#2
Symeon Tournis
No abstract text is available yet for this article.
September 1, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28904363/calcitriol-reduces-kidney-development-disorders-in-rats-provoked-by-losartan-administration-during-lactation
#3
Lucas Ferreira de Almeida, Heloísa Della Coletta Francescato, Cleonice Giovanini Alves da Silva, Roberto Silva Costa, Terezila Machado Coimbra
Calcitriol has important effects on cellular differentiation and proliferation, as well as on the regulation of the renin gene. Disturbances in renal development can be observed in rats exposed to angiotensin II (AngII) antagonists during lactation period. The lack of tubular differentiation in losartan-treated rats can affect calcitriol uptake. This study evaluated the effect of calcitriol administration in renal development disturbances in rats provoked by losartan (AngII type 1 receptor antagonist) administration during lactation...
September 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28885916/calcitriol-reverses-induced-expression-of-efflux-proteins-and-potentiates-cytotoxic-activity-of-gemcitabine-in-capan-2-pancreatic-cancer-cells
#4
Hamed Gilzad-Kohan, Shabnam Sani, Mehdi Boroujerdi
PURPOSE: Efflux and influx proteins play a major role in chemo-resistance by affecting the net cellular uptake of anti-cancer drugs. Hence, alteration of the efflux and influx protein expression may result in variations of chemotherapeutics uptake and consequently cell death rate. The present study investigated the effects of pre-treatment of capan-2 pancreatic cancer cells with calcitriol, butylated hydroxytoluene (BHT), butylated hydroxyanisole (BHA) or silibinin on the induction of three major efflux proteins and the main gemcitabine influx protein...
2017: Journal of Pharmacy & Pharmaceutical Sciences: a Publication of the Canadian Society for Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28885847/regulation-of-reduced-folate-carrier-rfc-by-vitamin-d-receptor-at-the-blood-brain-barrier
#5
Camille Alam, Md Tozammel Hoque, Richard H Finnell, I David Goldman, Reina Bendayan
Folates are essential for brain development and function. Folate transport in mammalian tissues is mediated by three major folate transport systems, i.e., reduced folate carrier (RFC), proton-coupled folate transporter (PCFT) and folate receptor alpha (FRα), known to be regulated by ligand-activated nuclear receptors such as vitamin D receptor (VDR). Folate uptake at the choroid plexus, which requires the actions of both FRα and PCFT, is critical to cerebral folate delivery. Inactivating FRα or PCFT mutations cause severe cerebral folate deficiency resulting in early childhood neurodegeneration...
September 8, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28875306/maternal-serum-calcitriol-during-pregnancy-and-risk-of-childhood-onset-type-1-diabetes
#6
Ingvild M Sørensen, Geir Joner, Pål A Jenum, Anne Eskild, Sandra R Dahl, Lars C Stene
No abstract text is available yet for this article.
September 5, 2017: Acta Diabetologica
https://www.readbyqxmd.com/read/28873971/clinical-practice-recommendations-for-treatment-with-active-vitamin-d-analogues-in-children-with-chronic-kidney-disease-stages-2-5-and-on-dialysis
#7
Rukshana Shroff, Mandy Wan, Evi V Nagler, Sevcan Bakkaloglu, Mario Cozzolino, Justine Bacchetta, Alberto Edefonti, Constantinos J Stefanidis, Johan Vande Walle, Gema Ariceta, Günter Klaus, Dieter Haffner, Claus Peter Schmitt
In patients with chronic kidney disease (CKD), renal synthesis of active vitamin D [1,25-dihydroxyvitamin D (1,25(OH)2D)] declines and is associated with hypocalcaemia, secondary hyperparathyroidism and the spectrum of CKD-mineral and bone disorder (MBD). In advanced CKD, active vitamin D analogues, including alfacalcidol, calcitriol and paricalcitol, are routinely administered. There are few studies on the use of vitamin D analogues in children with CKD and on dialysis. It is difficult to define bone-specific outcomes that can guide treatment with active vitamin D analogues in children with CKD-MBD...
July 1, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28869940/severe-secondary-hyperparathyroidism-in-a-hemodialysis-patient-a-case-report-from-mongolia
#8
Saruultuvshin Adiya, Khurtsbayar Damdinsuren, Chuluuntsetseg Dorj
Secondary hyperparathyroidism (SHPT) occurs in patients with chronic renal failure complicated with renal bone disease and soft tissue/vascular calcification. In dialysis patients with severe SHPT, medical treatment may fail and parathyroidectomy (PTX) is indicated for definitive treatment. Severe hypocalcemia from hungry bone disease or postoperative hypoparathyroidism may occur during the postoperative period. We report here a case of severe SHPT in a hemodialysis patient treated with phosphate binders, calcitriol, and calcimimetics but who still required PTX...
2017: Blood Purification
https://www.readbyqxmd.com/read/28861155/calcitriol-promotes-survival-of-experimental-random-pattern-flap-via-activation-of-autophagy
#9
Long Chen, Kailiang Zhou, Huanwen Chen, Shihen Li, Dingsheng Lin, Dongsheng Zhou
Calcitriol can promote random pattern flap survival and increase autophagy activity. However, effect of autophagy on flap survival after calcitriol treatment, along with the underlying mechanism, is undefined. In this study, the "McFarlane flap" model was established in 72 rats divided into control, calcitriol, and calcitriol+3-methyladenine (3MA) groups and injected with saline, calcitriol, and calcitriol plus 3MA, respectively. The percentage flap survival area and tissue water content were tested after 7 days...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28860784/effect-of-additive-calcium-administration-on-fgf23-levels-in-patients-with-mild-chronic-kidney-disease-treated-with-calcitriol-a-randomized-open-labeled-clinical-trial
#10
Nayoung Han, Su Hyun Hong, Yon Su Kim, Dong Ki Kim, In-Wha Kim, Eunhee Ji, Jung Mi Oh
BACKGROUND: The purpose of the present study was to determine the effect of additional calcium carbonate treatment on fibroblast growth factor 23 (FGF23) levels in patients treated with calcitriol. METHODS: In this randomized, open-labeled, and parallel-group study, a total of 30 patients with early chronic kidney disease (CKD) and vitamin D deficiency were randomly assigned to two groups and received interventions for 8 weeks: 1) a combination of calcium carbonate and calcitriol group; and 2) calcitriol only group...
2017: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/28834664/plasma-calcidiol-calcitriol-and-parathyroid-hormone-and-risk-of-new-onset-heart-failure-in-a-population-based-cohort-study
#11
Laura M G Meems, Frank P Brouwers, Michel M Joosten, Hiddo J Lambers Heerspink, Dick de Zeeuw, Stephan J L Bakker, Ron T Gansevoort, Wiek H van Gilst, Pim van der Harst, Rudolf A de Boer
BACKGROUND: Heart failure (HF) is a major problem in the Western world, with increasing prevalence and incidence. Because HF cannot be cured, prevention of HF is of utter importance. Calcidiol, calcitriol, and parathyroid hormone (PTH) have been identified as risk factors for cardiovascular disease. However, their association with new onset HF remains to be established. We investigated whether calcidiol, calcitriol, and PTH could be used to identify those subjects at risk for new onset HF, and if they had additive predictive value over established risk predictors like N-terminal-pro Brain-type natriuretic peptide and highly sensitive Troponin-T...
September 2016: ESC Heart Failure
https://www.readbyqxmd.com/read/28814738/identification-of-novel-non-secosteroidal-vitamin-d-receptor-agonists-with-potent-cardioprotective-effects-and%C3%A2-%C3%AF-%C3%AF-devoid-of-hypercalcemia
#12
Santosh A Khedkar, Mohammed A Samad, Sangita Choudhury, Ji Yoo Lee, Dongsheng Zhang, Ravi I Thadhani, S Ananth Karumanchi, Alan C Rigby, Peter M Kang
Vitamin D regulates many biological processes, but its clinical utility is limited by its hypercalcemic effect. Using a virtual screening platform to search novel chemical probes that activate the vitamin D signaling, we report discovery of novel non-steroidal small-molecule compounds that activate the vitamin D receptor (VDR), but are devoid of hypercalcemia. A lead compound (known as VDR 4-1) demonstrated potent transcriptional activities in a VDR reporter gene assay, and significantly ameliorated cardiac hypertrophy in cell culture studies and in animal models...
August 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28809991/treatment-of-inverse-intertriginous-psoriasis-updated-guidelines-from-the-medical-board-of-the-national-psoriasis-foundation
#13
Hasan Khosravi, Michael P Siegel, Abby S Van Voorhees, Joseph F Merola
<p>Inverse or intertriginous psoriasis commonly involves skin fold areas including the axillae, perianal skin, intergluteal cleft, inframammary, genital/inguinal, abdominal, and retroauricular folds. After reviewing the literature for new treatments, a task force was convened to update a consensus on inverse psoriasis therapy. Short-term treatment continues to be low-potency topical steroids. In order to avoid steroid-induced adverse effects, long-term therapy includes topical immunomodulators, calcitriol, and calcipotriene...
August 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28803964/tgf%C3%AE-smad-signalling-modulates-mll-and-mll-af4-mediated-5-lipoxygenase-promoter-activation
#14
Meike J Saul, Florian Groher, Anett B Hegewald, Michaela Müller-McNicoll, Rolf Marschalek, Beatrix Suess, Dieter Steinhilber
5-Lipoxygenase (5-LO) catalyzes the initial two steps of the conversion of arachidonic acid to leukotrienes which represent a group of pro-inflammatory lipid mediators involved in immune defense reactions as well as inflammation, allergy and cancer. Transforming growth factor-β (TGFβ) and calcitriol strongly upregulate 5-LO expression during myeloid cell differentiation and MLL-AF4 has been shown to strongly activate the 5-LO promoter. Here, we investigated the role of TGFβ/SMAD signalling in 5-LO promoter activation...
August 10, 2017: Prostaglandins & Other Lipid Mediators
https://www.readbyqxmd.com/read/28772270/induction-of-the-vitamin-d-receptor-attenuates-autophagy-dysfunction-mediated-cell-death-following-traumatic-brain-injury
#15
Changmeng Cui, Jianzhong Cui, Feng Jin, Ying Cui, Ran Li, Xiaohua Jiang, Yanxia Tian, Kaijie Wang, Pei Jiang, Junling Gao
BACKGROUND/AIMS: Traumatic brain injury (TBI) is a major public health problem in the world and causes high rates of mortality and disability. Recent evidence suggests that vitamin D (VD) has neuroprotective actions and can promote function recovery after TBI. In vitro and in vivo studies have demonstrated that autophagy could be enhanced following supplementation with an active metabolite of VD (calcitriol). However, it is unclear whether autophagy participates in the protective effects of calcitriol after TBI...
August 3, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28768651/combined-bioavailable-isoflavones-and-probiotics-improve-bone-status-and-estrogen-metabolism-in-postmenopausal-osteopenic-women-a-randomized-controlled-trial
#16
RANDOMIZED CONTROLLED TRIAL
Max Norman Tandrup Lambert, Catrine Bundgaard Thybo, Simon Lykkeboe, Lars Melholt Rasmussen, Xavier Frette, Lars Porskjær Christensen, Per Bendix Jeppesen
Background: Female age-related estrogen deficiency increases the risk of osteoporosis, which can be effectively treated with the use of hormone replacement therapy. However, hormone replacement therapy is demonstrated to increase cancer risk. Bioavailable isoflavones with selective estrogen receptor affinity show potential to prevent and treat osteoporosis while minimizing or eliminating carcinogenic side effects.Objective: In this study, we sought to determine the beneficial effects of a bioavailable isoflavone and probiotic treatment against postmenopausal osteopenia...
September 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28768451/microwave-ablation-an-effective-treatment-for-mild-to-moderate-secondary-hyperparathyroidism-in-patients-undergoing-haemodialysis
#17
Gang Wang, Sha Liu, Xu Liu, Linxue Qian, Zongli Diao, Wenhu Liu
BACKGROUND: Microwave ablation (MWA) is an effective treatment for severe secondary hyperparathyroidism (SHPT), but it can also be used for mild-to-moderate secondary hyperparathyroidism (SHPT). In this randomised, controlled study, the efficacy of MWA in the treatment of mild-to-moderate hyperparathyroidism is investigated. MATERIALS AND METHODS: We assessed outcomes 12 months after the randomisation of 28 patients with mild-to-moderate SHPT. The subjects received either MWA plus calcitriol or calcitriol alone...
August 2, 2017: International Journal of Hyperthermia
https://www.readbyqxmd.com/read/28764147/study-of-vitamin-d-receptor-gene-polymorphism-foki-taqi-and-apai-among-prostate-cancer-patients-in-north-india
#18
Pankaj Ramrao Kambale, Deepa Haldar, B C Kabi, Kalpana Pankaj Kambale
INTRODUCTION: Incidence of prostate cancer is rising worldwide. Multiple factors have been suggested for the aetiology of prostate cancer including ethnic, genetic and diet. Vitamin D (calcitriol) has been shown to have role in cell growth and differentiation and its deficiency is implicated as one of the aetiological factors in prostate cancer. Prostatic epithelial cells express Vitamin D Receptor (VDR) as well as 1α- hydroxylase enzyme that are required for the synthesis of calcitriol and its action...
June 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28761977/calcineurin-inhibitors-regulate-fibroblast-growth-factor-23-fgf23-synthesis
#19
Ludmilla Bär, Claudia Großmann, Michael Gekle, Michael Föller
Fibroblast growth factor 23 (FGF23) inhibits renal phosphate reabsorption and calcitriol formation, effects depending on Klotho as a co-receptor for FGF23. In addition, FGF23/Klotho strongly influences aging and the onset of age-associated diseases. The synthesis of FGF23 by bone cells is induced by store-operated Ca(2+) entry (SOCE) through Orai1 in UMR106 osteoblast-like cells. Ca(2+) entry activates the phosphatase calcineurin in many cell types which dephosphorylates nuclear factor of activated T cells (NFAT) thereby stimulating its transcriptional activity...
July 31, 2017: Naunyn-Schmiedeberg's Archives of Pharmacology
https://www.readbyqxmd.com/read/28757443/synthetic-studies-of-23s-25r-1%C3%AE-25-dihydroxyvitamin-d3-26-23-lactone-calcitriol-lactone-and-its-derivatives
#20
REVIEW
Yusuke Akagi, Akiko Nagata, Minami Odagi, Kazuo Nagasawa
(23S,25R)-1α,25-Dihydroxyvitamin D3 26,23-lactone (calcitriol lactone) is a major metabolite of 1α,25-dihydroxyvitamin D3 that binds to vitamin D receptor (VDR) and exhibits various biological activities. This lactone and its derivatives are considered to have potential as drug candidates to treat VDR-related diseases, but their biological activities have not yet been fully characterized, mainly because of their limited availability by chemical synthesis. This review deals with synthetic studies of calcitriol lactone, and its derivatives, i...
July 27, 2017: Journal of Steroid Biochemistry and Molecular Biology
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