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vitamin A and osteoporosis

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https://www.readbyqxmd.com/read/27915435/bone-remodeling-and-regulating-biomarkers-in-women-at-the-time-of-breast-cancer-diagnosis
#1
Song Yao, Yali Zhang, Li Tang, Janise M Roh, Cecile A Laurent, Chi-Chen Hong, Theresa Hahn, Joan C Lo, Christine B Ambrosone, Lawrence H Kushi, Marilyn L Kwan
PURPOSE: The majority of breast cancer patients receive endocrine therapy, including aromatase inhibitors known to cause increased bone resorption. Bone-related biomarkers at the time of breast cancer diagnosis may predict future risk of osteoporosis and fracture after endocrine therapy. METHODS: In a large population of 2,401 female breast cancer patients who later underwent endocrine therapy, we measured two bone remodeling biomarkers, TRAP5b and BAP, and two bone regulating biomarkers, RANKL and OPG, in serum samples collected at the time of breast cancer diagnosis...
December 3, 2016: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/27914693/high-prevalence-of-osteoporosis-and-morphometric-vertebral-fractures-in-indian-males-aged-60-years-and-above-should-age-for-screening-be-lowered
#2
Khurshid A Bhat, Manisha Kakaji, Ashish Awasthi, Manoj Shukla, Manoj Dubey, Rajesh Srivastava, Uttam Singh, Sushil K Gupta
Current guidelines recommend bone mineral density (BMD) measurement in asymptomatic men above age 70 years and vertebral fracture (VF) assessment above 80 years with T-score <-1.0 with risk factors. We studied the prevalence of osteoporosis and morphometric VF in asymptomatic males aged 60 years and above in North India. Free-living community-dwelling men (n = 241, age: mean ± standard deviation 68.0 ± 6.2 years) underwent a detailed history, physical examination, biochemical evaluation, and BMD measurements at 3 sites: lumbar spine, total hip (TH), and femoral neck (FN)...
November 30, 2016: Journal of Clinical Densitometry
https://www.readbyqxmd.com/read/27914610/lack-of-association-between-vitamin-d-receptor-polymorphisms-apai-rs7975232-and-bsmi-rs1544410-and-osteoporosis-among-the-han-chinese-population-a-meta-analysis
#3
Meng Yu, Guo-Qiang Chen, Fang Yu
In this study, we aimed to assess the relationship between vitamin D receptor gene polymorphisms and osteoporosis in the Han Chinese population. Articles regarding associations between vitamin D receptor polymorphisms (ApaI rs7975232 and BsmI rs1544410) and osteoporosis were retrieved from databases in November 2014. Eligible studies were tested by the Hardy-Weinberg equilibrium. The odds ratio and 95% confidence interval (95% CI) were analyzed to evaluate the strength of the associations. Pooled effect estimates were derived using a fixed-effect model and a random-effect model according to the heterogeneity of the test results...
December 2016: Kaohsiung Journal of Medical Sciences
https://www.readbyqxmd.com/read/27909782/associations-between-serum-vitamin-e-concentration-and-bone-mineral-density-in-the-us-elderly-population
#4
J Zhang, X Hu, J Zhang
: Mixed findings regarding effects of vitamin E on bone metabolism existed. We were the first to find a negative association between serum α-tocopherol concentration and bone mineral density in the US elderly population. Using vitamin E supplement as α-tocopherol to promote bone health was not warranted at this time. INTRODUCTION: The aim of the study is to examine the associations between serum vitamin E (α-tocopherol and γ-tocopherol) status and bone mineral density (BMD) among the US elderly population...
December 1, 2016: Osteoporosis International
https://www.readbyqxmd.com/read/27909721/protective-effect-of-vk2-on-glucocorticoid-treated-mc3t3-e1-cells
#5
Yue-Lei Zhang, Jun-Hui Yin, Hao Ding, Wei Zhang, Chang-Qing Zhang, You-Shui Gao
Glucocorticoids (GCs) contribute to the increased incidence of secondary osteoporosis and osteonecrosis, and medications for the prevention and treatment of these complications have been investigated for many years. Vitamin K2 (VK2) has been proven to promote bone formation both in vitro and in vivo. In this study, we examined the effects of VK2 on dexamethasone (DEX)-treated MC3T3-E1 osteoblastic cells. We observed that VK2 promoted the proliferation and enhanced the survival of dexamethasone-treated MC3T3-E1 cells...
December 1, 2016: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/27906437/vitamin-d-receptor-polymorphisms-as-tool-for-early-screening-of-severe-bone-loss-in-women-patients-with-rheumatoid-arthritis
#6
G Di Spigna, A Del Puente, B Covelli, E Abete, E Varriale, S Salzano, L Postiglione
OBJECTIVE: Rheumatoid Arthritis (RA) is an autoimmune inflammatory disease that leads to local and systemic arthritis and bone loss. Exploring genetic markers of candidate genes in osteoporosis and inflammatory cytokine genes could be a useful tool for the early identification of bone loss and fracture risk in RA patients. The target of this study is the evaluation and correlation between of Single Nucleotide Polymorphisms (SNPs) of Vitamin D Receptor (VDR) and possible effects on bone loss in RA...
November 2016: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/27905067/mathematical-model-of-bone-remodeling-captures-the-antiresorptive-and-anabolic-actions-of-various-therapies
#7
David S Ross, Khamir Mehta, Antonio Cabal
A better understanding of the molecular pathways regulating the bone remodeling process should help in the development of new antiresorptive regulators and anabolic regulators, that is, regulators of bone resorption and of bone formation. Understanding the mechanisms by which parathyroid hormone (PTH) influences bone formation and how it switches from anabolic to catabolic action is important for treating osteoporosis (Poole and Reeve in Curr Opin Pharmacol 5:612-617, 2005). In this paper we describe a mathematical model of bone remodeling that incorporates, extends, and integrates several models of particular aspects of this biochemical system (Cabal et al...
November 30, 2016: Bulletin of Mathematical Biology
https://www.readbyqxmd.com/read/27904621/the-association-between-vitamin-d-and-health-outcomes-in-women-a-review-on-the-related-evidence
#8
REVIEW
Nahid Ramezani Jolfaie, Mohammad Hossein Rouhani, Shokouh Onvani, Leila Azadbakht
BACKGROUND: Vitamin D has a wide range of physiological functions in skeletal and nonskeletal tissues which may play a role in many diseases. The aim of this study was to evaluate the recent evidence regarding the effects of Vitamin D on several health outcomes in women including breast cancer, ovarian and endometrial cancers, hypertension, and osteoporosis. MATERIALS AND METHODS: We searched PubMed and Google Scholar databases through March 2016. We included the most current systematic reviews and meta-analyses assessing the associations of Vitamin D intake and/or serum 25-hydroxyvitamin D (25(OH)D) levels with the risk of incidence of breast cancer, ovarian and endometrial cancers, hypertension, and osteoporosis...
2016: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/27895694/edentulous-child-with-allgrove-syndrome-a-rare-case-report
#9
Mohammad Vahedi, Shima Fathi, Hanif Allahbakhshi
Triple-A syndrome, also known as Allgrove syndrome, is a rare autosomal recessive disorder. The 3 features of this syndrome are achalasia, adrenal insufficiency, and alacrima. Achalasia could be the first manifestation of the triple-A syndrome; however, its etiology is unclear. Alacrima is generally asymptomatic but can be detected by obtaining patient history. Although adrenal insufficiency could have manifestations such as asthenia, it might be wrongly diagnosed as muscle fatigue. Vitamin D and calcium supplements are usually prescribed for the prevention of osteoporosis...
November 2016: Korean Journal of Pediatrics
https://www.readbyqxmd.com/read/27889053/osteoporosis-in-postmenopausal-women-living-with-hiv
#10
REVIEW
Fionnuala Finnerty, Karen Walker-Bone, Shema Tariq
The widespread availability of effective antiretroviral therapy (ART) has transformed HIV from a life-limiting condition to one with near-normal life expectancy. HIV is associated with an increased risk of osteopenia and osteoporosis, with people living with HIV (PLHIV) potentially experiencing these conditions at a younger age than their HIV-negative counterparts. The mechanisms driving bone disease in HIV are complex and include: an increased prevalence of traditional risk factors; other comorbid conditions; and HIV-associated factors such as viral effects, systemic inflammation, and ART-related factors...
January 2017: Maturitas
https://www.readbyqxmd.com/read/27874933/vitamin-d-supplementation-for-osteoporosis-in-older-adults-can-we-make-it-help-better
#11
C-H Dong, Q-M Gao, Z-M Wang, A-M Wang, P Zhen
With the increase of the average age of our population, the incidence of diseases specific for older adults has been increasing. One of such diseases is osteoporosis. The true incidence of osteoporosis is unknown. But the estimates indicate that this disease affects wide proportions of the population, ranging in millions or even ten millions in large countries like the United States. As this poses a significant burden on the health care system, interventions that could prevent or treat this condition are in the focus of clinical research...
November 2016: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/27872411/osteoporosis-in-pediatric-liver-transplantation
#12
Walid Faraj, Ghina El Nounou, Abdallah Abou Al Naaj, Nancy Nakhoul, Ali Haydar, Mohammad Khalife
Liver transplantation provides an important, often life-saving treatment for end-stage liver disease. Osteoporosis post-liver transplantation has been described in adults; however, this has not been described in the pediatric population to date. We present a case of a 13-year-old female patient who underwent an orthotopic liver transplant for cryptogenic liver cirrhosis. Her immunosuppressants were tacrolimus and prednisone. Four months posttransplant, she started complaining of bilateral lower limb pain and limping while walking, progressing to a point where she was almost immobile...
December 2016: Progress in Transplantation
https://www.readbyqxmd.com/read/27862983/denosumab-prevention-and-management-of-hypocalcemia-osteonecrosis-of-the-jaw-and-atypical-fractures
#13
REVIEW
Kenneth Pittman, Yoland C Antill, Amanda Goldrick, Jeffrey Goh, Richard H de Boer
Denosumab, a bone-modifying agent, reduces the risk of skeletal-related events in patients with bone metastases from solid tumors and is generally well tolerated. However, hypocalcemia, osteonecrosis of the jaw (ONJ) and atypical fracture are potential and important toxicities of denosumab therapy that require attention. In pivotal phase III trials in patients with bone metastases from solid tumors, the incidence of hypocalcemia was 9.6% in denosumab-treated patients, with most events being asymptomatic, grade 2 and resolving by week 4...
November 10, 2016: Asia-Pacific Journal of Clinical Oncology
https://www.readbyqxmd.com/read/27858878/association-between-pulmonary-fibrosis-and-osteoporosis-in-the-elderly-people-a-case-control-study
#14
Zhong Xie, Yanhong He, Yongqiang Sun, Zhanzhan Lin, Mingzhi Yang, Qian Liu, Sihai Liu
In this case-control study, we evaluated the association between osteoporosis and pulmonary fibrosis in the elderly. Participants were divided into a test group and a control group depending on bone mineral density and grid pattern changes of pulmonary fibrosis. We measured general conditions, related risk factors, serum biochemical index, grid pattern changes of double lungs, pulmonary function, arterial oxygen pressure (PO2), and bone mineral density of participates, and investigated the data through statistical analysis on SPSS 17...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27856775/genetically-decreased-vitamin-d-and-risk-of-alzheimer-disease
#15
Lauren E Mokry, Stephanie Ross, John A Morris, Despoina Manousaki, Vincenzo Forgetta, J Brent Richards
OBJECTIVE: To test whether genetically decreased vitamin D levels are associated with Alzheimer disease (AD) using mendelian randomization (MR), a method that minimizes bias due to confounding or reverse causation. METHODS: We selected single nucleotide polymorphisms (SNPs) that are strongly associated with 25-hydroxyvitamin D (25OHD) levels (p < 5 × 10(-8)) from the Study of Underlying Genetic Determinants of Vitamin D and Highly Related Traits (SUNLIGHT) Consortium (N = 33,996) to act as instrumental variables for the MR study...
November 16, 2016: Neurology
https://www.readbyqxmd.com/read/27854316/causes-consequences-and-public-health-implications-of-low-b-vitamin-status-in-ageing
#16
REVIEW
Kirsty Porter, Leane Hoey, Catherine F Hughes, Mary Ward, Helene McNulty
The potential protective roles of folate and the metabolically related B-vitamins (vitamins B12, B6 and riboflavin) in diseases of ageing are of increasing research interest. The most common cause of folate and riboflavin deficiencies in older people is low dietary intake, whereas low B12 status is primarily associated with food-bound malabsorption, while sub-optimal vitamin B6 status is attributed to increased requirements in ageing. Observational evidence links low status of folate and the related B-vitamins (and/or elevated concentrations of homocysteine) with a higher risk of degenerative diseases including cardiovascular disease (CVD), cognitive dysfunction and osteoporosis...
November 16, 2016: Nutrients
https://www.readbyqxmd.com/read/27852903/effects-of-teriparatide-compared-with-risedronate-on-recovery-after-pertrochanteric-hip-fracture-results-of-a-randomized-active-controlled-double-blind-clinical-trial-at-26-weeks
#17
Per Aspenberg, Jorge Malouf, Umberto Tarantino, Pedro A García-Hernández, Costantino Corradini, Søren Overgaard, Jan J Stepan, Lars Borris, Eric Lespessailles, Frede Frihagen, Kyriakos Papavasiliou, Helmut Petto, José Ramón Caeiro, Fernando Marin
BACKGROUND: Osteoporosis drugs might affect fracture-healing. We therefore studied the effects of teriparatide in comparison with risedronate on recovery after pertrochanteric hip fractures. METHODS: The study was a randomized, multicenter, active-controlled, 78-week trial comparing teriparatide (20 μg/day) with risedronate (35 mg/week) initiated within 2 weeks after fixation of a low-trauma pertrochanteric hip fracture (AO/OTA 31-A1 or 31-A2). The main inclusion criteria were a bone mineral density T-score of ≤-2...
November 16, 2016: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/27851678/osteoporosis-preventive-practice-between-veteran-and-nonveteran-older-adults-findings-from-patient-reported-data
#18
Eun-Shim Nahm, Kathleen Charters, Eunhae Yoo, Linda M Keldsen, Shijun Zhu
BACKGROUND: Veterans are prone to bone-related illnesses due to multiple risk factors such as prior injuries. The aim of this study was to compare trends in osteoporosis preventive practices between veteran and nonveteran older adults. METHODS: This was a secondary data analysis using selected baseline data and discussion postings from an online bone health trial including participants (N = 866) recruited from My HealtheVet (MHV) and SeniorNet (SN). Data were analyzed using descriptive statistics, parametric statistics, and content analysis...
November 2016: Orthopaedic Nursing
https://www.readbyqxmd.com/read/27845703/older-swedish-adults-with-high-self-perceived-health-show-optimal-25-hydroxyvitamin-d-levels-whereas-vitamin-d-status-is-low-in-patients-with-high-disease-burden
#19
Martin Carlsson, Pär Wanby, Lars Brudin, Erik Lexne, Karin Mathold, Rebecca Nobin, Lisa Ericson, Ola Nordqvist, Göran Petersson
Controversy pervades the definition of adequate and optimal vitamin D status. The Institutes of Medicine have recommended serum 25(OH)D levels above 50 nmol/L based upon evidence related to bone health, but some experts, including the Endocrine Society and International Osteoporosis Foundation, suggest a minimum serum 25(OH)D level of 75 nmol/L to reduce the risk of falls and fractures in older adults. In a cross-sectional study, we compared vitamin D status in people ≥75 years selected from four groups with a frailty phenotype, combined with a control group free from serious illness, and who considered themselves completely healthy...
November 11, 2016: Nutrients
https://www.readbyqxmd.com/read/27834418/effect-of-periodontitis-on-bone-mineral-density-in-postmenopausal-women-a-non-randomized-interventional-study
#20
Aastha Baldodia, Rajinder Kumar Sharma, Shikha Tewari, Satish Chander Narula
OBJECTIVE: Chronic periodontitis (CP) is associated with increased systemic inflammation and osteoporosis. Pro-inflammatory cytokines, implicated in systemic bone loss, are also associated with periodontitis. The impact of control of systemic inflammation by scaling and root planing (SRP) on bone mineral density (BMD) in postmenopausal (PM) osteopenic women with CP was investigated in this study. METHOD AND MATERIALS: Sixty-eight PM osteopenic women with CP were included...
November 10, 2016: Quintessence International
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