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vitamin A and osteoporosis

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https://www.readbyqxmd.com/read/28096639/association-between-serum-25-hydroxyvitamin-d-levels-and-bone-mineral-density-in-normal-postmenopausal-women
#1
Vasundhara Kamineni, Akkenapally Prasanna Latha, K Ramathulasi
AIM: This study was conducted with the objective of assessing serum 25-hydroxyvitamin D (25(OH)D) in postmenopausal women (PMW), to detect osteopenia or osteoporosis in PMW and to establish a correlation between serum 25(OH)D levels and bone mineral density (BMD). MATERIALS AND METHODS: A total of 100 healthy PMW were selected, and a prospective observational study was conducted to correlate the BMD with serum 25(OH)D levels. Their laboratory investigations along with serum 25(OH)D levels were done...
October 2016: Journal of Mid-life Health
https://www.readbyqxmd.com/read/28093017/the-bone-health-team
#2
Phillip T Lawrence, Marissa P Grotzke, Yanina Rosenblum, Richard E Nelson, Joanne LaFleur, Karla L Miller, Junjie Ma, Grant W Cannon
BACKGROUND: Significant improvements in secondary prevention of osteoporotic fractures have been noted with fracture liaison services. However, similar models for the primary prevention of such fractures have not been reported. OBJECTIVE: To determine the impact of a Bone Health Team (BHT) on osteoporosis screening and treatment rates in U.S. veterans in primary care practices. DESIGN: Historical cohort study of a primary care-based intervention of a BHT from February 2013 to February 2015...
January 1, 2017: Journal of Primary Care & Community Health
https://www.readbyqxmd.com/read/28078844/a-natural-formula-containing-lactoferrin-equisetum-arvensis-soy-isoflavones-and-vitamin-d3-modulates-bone-remodeling-and-inflammatory-markers-in-young-and-aged-rats
#3
L Menghini, C Ferrante, L Leporini, L Recinella, A Chiavaroli, S Leone, G Pintore, M Vacca, G Orlando, L Brunetti
A pivotal role in osteoporosis development is played by radical oxygen species (ROS), the increased production of which is related to inhibited osteoblastic activity and bone formation. A new field of research could involve medicinal plants with antioxidant and protective effects in osteoporosis. Furthermore, considering the multifactorial metabolic aspects of osteoporosis, the pharmacological association of multiple medicinal plants could improve patient response. The aim of the present study is to evaluate in vitro and in vivo the protective effects of a natural formula containing lactoferrin 12%, Equisetum arvensis ES 54%, soy isoflavones 34% and vitamin D3 0...
October 2016: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28060972/-vitamin-d-and-parathyroid-hormone-levels-and-bone-mineral-density-in-patients-undergoing-hematopoietic-cell-transplantation
#4
Pablo Florenzano, Daniel Ernst, Nicole Lustig, Patricio Rojas, Pablo Ramírez, Claudia Campusano
BACKGROUND: Patients undergoing hematopoietic cell transplantation (HCT) are at increased risk of developing osteoporosis. AIM: To determine the frequency and severity of Vitamin D deficiency, secondary hyperparathyroidism and low bone mass in patients undergoing HCT. PATIENTS AND METHODS: Analysis of the database of patients undergoing HCT in our institution in the 2010-2015 period. We searched for patients with measurements of 25-OH vitamin D (25OHD), parathyroid hormone (PTH) and bone densitometry by double beam X ray absorptiometry (DXA) prior and up to one year after HCT...
September 2016: Revista Médica de Chile
https://www.readbyqxmd.com/read/28060768/a-novel-osteoporosis-model-with-ascorbic-acid-deficiency-in-akr1a1-gene-knockout-mice
#5
Cheng-Wei Lai, Hsiao-Ling Chen, Min-Yu Tu, Wei-Yu Lin, Theresa Röhrig, Shang-Hsun Yang, Ying-Wei Lan, Kowit-Yu Chong, Chuan-Mu Chen
The AKR1A1 protein is a member of the aldo-keto reductase superfamily that is responsible for the conversion of D-glucuronate to L-gulonate in the ascorbic acid (vitamin C) synthesis pathway. In a pCAG-eGFP transgenic mouse line that was produced by pronuclear microinjection, the integration of the transgene resulted in a 30-kb genomic DNA deletion, including the Akr1A1 gene, and thus caused the knockout (KO) of the Akr1A1 gene and targeting of the eGFP gene. The Akr1A1 KO mice (Akr1A1eGFP/eGFP) exhibited insufficient serum ascorbic acid levels, abnormal bone development and osteoporosis...
January 2, 2017: Oncotarget
https://www.readbyqxmd.com/read/28049234/chronic-kidney-disease-mineral-bone-disorder-in-korean-patients-a-report-from-the-korean-cohort-study-for-outcomes-in-patients-with-chronic-kidney-disease-know-ckd
#6
Chang Seong Kim, Eun Hui Bae, Seong Kwon Ma, Seung Hyeok Han, Kyu Beck Lee, Joongyub Lee, Kook Hwan Oh, Dong Wan Chae, Soo Wan Kim
This study examined the characteristics of biochemical parameters, bone diseases, and vascular calcification in Korean patients with chronic kidney disease (CKD) not yet on dialysis. Serum levels of fibroblast growth factor 23 (FGF23), intact parathyroid hormone (iPTH), 25-hydroxyvitamin D3 (25D), and 1,25-dihydroxyvitamin D3 (1,25D); lumbar spine, total hip, and femur neck bone mineral densities; and brachial-to-ankle pulse wave velocity (baPWV) representing vascular calcification were measured at baseline for 2,238 CKD patients in the KoreaN Cohort Study for Outcomes in Patients With CKD (KNOW-CKD)...
February 2017: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/28046015/the-relationship-between-25-oh-d-levels-vitamin-d-and-bone-mineral-density-bmd-in-a-saudi-population-in-a-community-based-setting
#7
Abdullah Alkhenizan, Ahmed Mahmoud, Aneela Hussain, Alia Gabr, Suad Alsoghayer, Abdelmoneim Eldali
BACKGROUND: Vitamin D deficiency has been linked to an increased risk of osteoporosis. Vitamin D deficiency has reached high levels in the Saudi population, but there is conflicting evidence both in the Saudi population, and worldwide, regarding the existence of a correlation between these low vitamin D levels and reduced BMD (bone mineral density), or osteoporosis. OBJECTIVE: The objective of this study was primarily to determine whether there was a correlation between vitamin D deficiency and osteoporosis in the Saudi population...
2017: PloS One
https://www.readbyqxmd.com/read/28040349/-effect-of-drugs-for-osteoporosis-on-cardiovascular-diseases-and-effect-of-cardio-vascular-drugs-on-osteoporosis
#8
Michel Laroche, Yannick Degboe, Hubert Blain, Véronique Breuil, Roland Chapurlat, Bernard Cortet, Bruno Sutter
Osteoporosis and cardiovascular diseases are epidemiologically associated. Calcification phenomena of atherosclerotic plaque involve cytokines and growth factors also involved in bone remodeling. Drugs given for either of these two conditions could act on these mechanisms. Can osteoporosis drugs have an influence on the occurrence of cardiovascular events? Conversely, can the treatment of hypertension alter the course of osteoporosis? It is possible that administration of high doses of calcium (1g/day) in patients who already have important dietary intake can increase the risk of myocardial infarction...
December 28, 2016: La Presse Médicale
https://www.readbyqxmd.com/read/28039046/bone-quality-assessment-as-measured-by-trabecular-bone-score-in-patients-with-end-stage-renal-disease-on-dialysis
#9
Maria P Yavropoulou, Vasilios Vaios, Maria Pikilidou, Ioannis Chryssogonidis, Melina Sachinidou, Symeon Tournis, Konstantinos Makris, Kalliopi Kotsa, Michalis Daniilidis, Afroditi Haritanti, Vassilios Liakopoulos
Patients with end-stage renal disease (ESRD) on maintenance hemodialysis (HD) exhibit osteoporosis and increased fracture risk. Dual-energy X-ray absorptiometry scan measurements and calculation of fracture risk assessment toll score underestimate fracture risk in these patients and do not estimate bone quality. Trabecular bone score (TBS) has been recently proposed as an indirect measure of bone microarchitecture. In this study, we investigated alterations of bone quality in patients with ESRD on HD, using TBS...
December 27, 2016: Journal of Clinical Densitometry
https://www.readbyqxmd.com/read/28032704/treatment-and-management-of-osteoporotic-fractures-a-nation-wide-survey-of-484-senior-orthopaedists-in-china
#10
Yi Man, Wei Pan, Jin Lu, Sen-Yuan Li, Pian Zhang, Jun-Zhe Guo, Shu-Fang Yu, Bei Zhang, En Xiao, Chao Zhang, Wei Zuo, He-Juan Jin, Yi Chen, Bin Wu, Xiao-En Shi, Di Hong, Xun Liu, Ying-Xu Gao, Jing Li, Lu Yin, Qing-Yun Xue
OBJECTIVE: To investigate the treatment given to osteoporotic fracture patients by orthopaedists at major hospitals in China. METHODS: A 25-item quantitative questionnaire survey, categorized into five domains, including primary purpose of osteoporosis treatment, anti-osteoporosis therapy, calcium and vitamin D supplement, monitoring of osteoporosis, and knowledge of osteoporosis treatment, was designed to elicit information on orthopaedists' views on the treatment of osteoporotic fracture...
November 2016: Orthopaedic Surgery
https://www.readbyqxmd.com/read/28032296/vitamin-d-musculoskeletal-health
#11
REVIEW
Harjit Pal Bhattoa, Jerzy Konstantynowicz, Natalia Laszcz, Marek Wojcik, Pawel Pludowski
Perhaps the role of Vitamin D supplementation has been most exhaustively studied in calcium absorption, skeletal wellbeing, muscular potency, balance and risk of falling. Nonetheless, new data has emerged and the recent research on sarcopenia makes the topic increasingly interesting. Given the socioeconomic burden of the musculoskeletal consequences of hypovitaminosis D it is vital to keep abreast with the latest literature in the field. The recommended Vitamin D supplementation dose should suffice to increase the serum 25 hydroxyvitamin D level to 30 ng/mL (75 nmol/L) and this level should be optimally maintained with a maintenance dose, particularly for those diagnosed with osteoporosis...
December 29, 2016: Reviews in Endocrine & Metabolic Disorders
https://www.readbyqxmd.com/read/28025971/-primary-and-secondary-prevention-of-hip-fragility-fracture-in-teruel-health-sector-aragon-spain
#12
Rafael Gómez Navarro, Paloma González García, Carlos Martín Hernández, Ángel Castro Sauras, Santiago Valdearcos Enguídanos
OBJECTIVE: Osteoporosis should be prevented, diagnosed and treated, preferably before the fragility fracture occurs. The objective was to analyze primary and secondary interventions carried out in individuals diagnosed with femur fragility fracture at Teruel in 2014. METHODS: Descriptive retrospective study. Variables assessed were sex, age, main health district, place of residence, basal functional situation, diagnosis on osteoporosis, hip or vertebral fracture, loss of height, use of FRAX tool, treatment on discharge, survival and cause of exitus...
January 2, 2017: Revista Española de Salud Pública
https://www.readbyqxmd.com/read/28025137/nongenomic-effects-of-1%C3%AE-25-dihydroxyvitamin-d3-on-cartilage-formation-deduced-from-comparisons-between-cyp27b1-and-vdr-knockout-mice
#13
Yoshihisa Hirota, Kimie Nakagawa, Shino Mimatsu, Natsumi Sawada, Toshiyuki Sakaki, Noboru Kubodera, Maya Kamao, Naoko Tsugawa, Yoshitomo Suhara, Toshio Okano
The active form of vitamin D, 1α,25-dihydroxyvitamin D3 (1α,25D3), plays an important role in the maintenance of calcium (Ca) homeostasis, bone formation, and cell proliferation and differentiation via nuclear vitamin D receptor (VDR). It is formed by the hydroxylation of vitamin D at the 1α position by 25-hydroxyvitamin D 1α-hydroxylase (CYP27B1) in the kidney. However, Cyp27b1(-/-) mice, deficient in CYP27B1, and VDR-deficient mice (Vdr(-/-)) have not been extensively examined, particularly in a comparative framework...
December 24, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28004295/vitamin-d-status-correction-in-saudi-arabia-an-experts-consensus-under-the-auspices-of-the-european-society-for-clinical-and-economic-aspects-of-osteoporosis-osteoarthritis-and-musculoskeletal-diseases-esceo
#14
Nasser M Al-Daghri, Yousef Al-Saleh, Naji Aljohani, Riad Sulimani, Abdulaziz M Al-Othman, Hanan Alfawaz, Mona Fouda, Fahad Al-Amri, Awad Shahrani, Mohammed Alharbi, Fahad Alshahrani, Waleed Tamimi, Shaun Sabico, Rene Rizzoli, Jean-Yves Reginster
BACKGROUND: Vitamin D deficiency is common in the Middle East and in Saudi Arabia, in particular. While several international recommendations on the management of vitamin D deficiency have been documented and practiced globally, these recommendations should be adapted to the conditions of the Middle Eastern region. To address this challenge, the Prince Mutaib Chair for Biomarkers of Osteoporosis (PMCO) in King Saud University (KSU), Riyadh, KSA, together with local experts and in cooperation with the European Society for Clinical and Economic Aspects of Osteoporosis and Osteoarthritis (ESCEO), organized a panel that formulated unified recommendations in the diagnosis and treatment of vitamin D deficiency in the region...
December 2017: Archives of Osteoporosis
https://www.readbyqxmd.com/read/28002913/pregnancy-associated-osteoporosis-pao-with-multiple-vertebral-fragility-fractures-diagnosis-and-treatment-in-a-young-primigravid-woman
#15
E Pola, D Colangelo, L A Nasto, V Pambianco, G Autore, V M Formica, G Maccauro
PAO is an uncommon condition affecting pregnant women during last trimester or early post-delivery period; it is often asymptomatic or presents with pain related to some acute fragility fractures. The diagnosis is often delayed or missed, the etiology remains unknown and no guidelines about treatment have been published. We present one case of PAO in a 33-year-old primigravid woman presenting acute worsening back pain. Our patient was treated with a TLSO brace, oral 25 (OH)-vitamin D supplementation and Teriparatide for 6 months...
October 2016: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/27976475/regulation-of-bone-remodeling-by-vitamin-k2
#16
Vamsee D Myneni, Eva Mezey
All living tissues require essential nutrients such as amino acids, fatty acids, carbohydrates, minerals, vitamins, and water. The skeleton requires nutrients for development, maintaining bone mass and density. If the skeletal nutritional requirements are not met, the consequences can be quite severe. In recent years, there has been growing interest in promotion of bone health and inhibition of vascular calcification by Vitamin K2. This vitamin regulates bone remodeling, an important process necessary to maintain adult bone...
December 14, 2016: Oral Diseases
https://www.readbyqxmd.com/read/27975302/vitamin-d-deficiency-is-associated-with-functional-decline-and-falls-in-frail-elderly-women-despite-supplementation
#17
M P Kotlarczyk, S Perera, M A Ferchak, D A Nace, N M Resnick, S L Greenspan
: We examined the impact of daily supplementation on vitamin D deficiency, function, and falls in female long-term care residents. Initial vitamin D deficiency was associated with greater functional decline and increased fall risk despite guideline-recommended supplementation, highlighting the importance of preventing vitamin D deficiency in frail elderly. INTRODUCTION: Institute of Medicine (IOM) guidelines recommend 800 IU vitamin D daily for older adults and maintaining serum 25-hydroxyvitamin D [25(OH) D] above 20 ng/ml for optimal skeletal health...
December 15, 2016: Osteoporosis International
https://www.readbyqxmd.com/read/27974229/selective-estrogen-receptor-modulators-and-the-vitamin-d-analogue-eldecalcitol-block-bone-loss-in-male-osteoporosis
#18
Yuiko Sato, Toshimi Tando, Mayu Morita, Kana Miyamoto, Tami Kobayashi, Ryuichi Watanabe, Takatsugu Oike, Morio Matsumoto, Masaya Nakamura, Takeshi Miyamoto
Rapid increases in the number of elderly people have dramatically increased the number of female and male osteoporosis patients. Osteoporosis often causes bone fragility fractures, and males exhibit particularly poor prognosis after these fractures, indicating that control of osteoporosis is crucial to maintain quality of men's lives. However, osteoporosis therapies available for men have lagged behind advances available for women. Here, we show that three selective estrogen receptor modulators (SERMs), namely, raloxifene, bazedoxifene, and tamoxifen, plus the vitamin D analogue ED71, also called eldecalcitol, completely block orchiectomy-induced, testosterone-depleted bone loss in male mice in vivo...
January 22, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27973461/bone-metabolism-in-non-alcoholic-fatty-liver-disease-vitamin-d-status-and-bone-mineral-density
#19
Ahad Eshraghian
Non alcoholic fatty liver disease (NAFLD) is the most common cause of chronic liver disease and liver enzymes abnormalities worldwide. NAFLD is reported to be associated with other extra-hepatic diseases including cardiovascular disease, diabetes mellites and thyroid gland abnormalities. Liver is also the source of many proteins involved in bone metabolism and is the regulator of several bone metabolism pathways. Although underlying pathogenesis is not clear, the association between NAFLD and low bone mineral density (BMD) in the forms of osteoporosis and osteopenia have been recently reported...
December 14, 2016: Minerva Endocrinologica
https://www.readbyqxmd.com/read/27943394/the-association-between-protein-intake-by-source-and-osteoporotic-fracture-in-older-men-a-prospective-cohort-study
#20
Lisa Langsetmo, James M Shikany, Peggy M Cawthon, Jane A Cauley, Brent C Taylor, Tien N Vo, Douglas C Bauer, Eric S Orwoll, John T Schousboe, Kristine E Ensrud
Dietary protein is a potentially modifiable risk factor for fracture. Our objectives were to assess the association of protein intake with incident fracture among older men and whether these associations varied by protein source or by skeletal site. We studied a longitudinal cohort of 5875 men (mean age 73.6, SD = 5.9 years) in the Osteoporotic Fractures in Men (MrOS) study. At baseline, protein intake was assessed as percent of total energy intake (TEI) with mean intake from all sources = 16.1%TEI...
December 12, 2016: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
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