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https://www.readbyqxmd.com/read/28742648/vitamin-d-deficiency-supplementation-and-cardiovascular-health
#1
Naveen Trehan, Luis Afonso, Diane L Levine, Phillip D Levy
Vitamin D has been traditionally recognized as a vitamin quintessential for bone-mineral health. In the past 2 decades, numerous experimental and observational studies have highlighted the role of vitamin D in immunity, metabolic syndrome (obesity and diabetes), cancers, renal disease, memory, and neurological dysfunction. In this article, we review important studies that focused on the impact of vitamin D on blood pressure, myocardial infarction, peripheral arterial disease, heart failure, and statin intolerance...
September 2017: Critical Pathways in Cardiology
https://www.readbyqxmd.com/read/28742500/adverse-effects-of-androgen-deprivation-therapy-in-patients-with-prostate-cancer-focus-on-metabolic-complications
#2
REVIEW
Vasileios Tzortzis, Michael Samarinas, Ioannis Zachos, Athanasios Oeconomou, Louis L Pisters, Alexandra Bargiota
Prostate cancer is the most common cancer among men and androgen deprivation therapy (ADT) is the most effective treatment for this disease. The cornerstone of the treatment of prostate cancer is inhibition of testosterone production which interrupts testosterone-induced growth of the prostate tumor. The dramatic decrease in testosterone levels, however, has several undesirable effects on the metabolic profile and bone metabolism and can also lead to fatigue, loss of libido, gynecomastia, and anemia, provoke vasomotor flushing, and generally affect the quality of life...
April 2017: Hormones: International Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28741036/network-based-subcellular-proteomics-in-monocyte-membrane-revealed-novel-candidate-genes-involved-in-osteoporosis
#3
Y Zeng, L Zhang, W Zhu, H He, H Sheng, Q Tian, F-Y Deng, L-S Zhang, H-G Hu, H-W Deng
In this study, label-free-based quantitative subcellular proteomics integrated with network analysis highlighted several candidate genes including P4HB, ITGB1, CD36, and ACTN1 that may be involved in osteoporosis. All of them are predicted as significant membrane proteins with high confidence and enriched in bone-related biological process. The results were further verified in transcriptomic and genomic levels. INTRODUCTION: Osteoporosis is a metabolic bone disease mainly characterized by low bone mineral density (BMD)...
July 24, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28739641/matrine-prevents-bone-loss-in-ovariectomized-mice-by-inhibiting-rankl-induced-osteoclastogenesis
#4
Xiao Chen, Xin Zhi, Panpan Pan, Jin Cui, Liehu Cao, Weizong Weng, Qirong Zhou, Lin Wang, Xiao Zhai, Qingiie Zhao, Honggang Hu, Biaotong Huang, Jiacan Su
Osteoporosis is a metabolic bone disease characterized by decreased bone density and strength due to excessive loss of bone protein and mineral content. The imbalance between osteogenesis by osteoblasts and osteoclastogenesis by osteoclasts contributes to the pathogenesis of postmenopausal osteoporosis. Estrogen withdrawal leads to increased levels of proinflammatory cytokines. Overactivated osteoclasts by inflammation play a vital role in the imbalance. Matrine is an alkaloid found in plants from the Sophora genus with various pharmacological effects, including anti-inflammatory activity...
July 24, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28737925/lipid-bilayer-gated-mesoporous-silica-nanocarriers-for-tumor-targeted-delivery-of-zoledronic-acid-in-vivo
#5
Diti Desai, Jixi Zhang, Jouko Sandholm, Jaakko Lehtimäki, Tove Grönroos, Johanna Tuomela, Jessica M Rosenholm
Zoledronic acid (ZOL) is a nitrogen-containing bisphosphonate used for the treatment of bone diseases and calcium metabolism. Anticancer activity of ZOL has been established, but its extraskeletal effects are limited due to its rapid uptake and accumulation to bone hydroxyapatite. In this work, we report on the development of tethered lipid bilayer-gated mesoporous silica nanocarriers (MSNs) for the incorporation, retention and intracellular delivery of ZOL. The in vitro anticancer activity of ZOL-loaded nanocarriers was evaluated by cell viability assay and live-cell imaging...
July 24, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28737193/-vertebral-fractures-in-children-with-type-i-osteogenesis-imperfecta
#6
Andrea M Sepúlveda, Claudia V Terrazas, Josefina Sáez, María L Reyes
Osteogenesis imperfecta (OI) is an hereditary disease affecting conective tissue, mainly associated to growth retardation and pathological fractures. OI type I (OI type I), is the mildest, most often, and homogeneous in its fenotype. Vertebral fractures are the most significant complications, associated to skeletical and cardiopulmonary morbidity. OBJECTIVES: To characterize clinically a cohort of children with OI type I. PATIENTS AND METHODS: A cohort of OI type I children younger than 20 year old was evaluated...
June 2017: Revista Chilena de Pediatría
https://www.readbyqxmd.com/read/28735861/protective-role-of-benzoselenophene-derivatives-of-resveratrol-on-the-induced-oxidative-stress-in-intestinal-myofibroblasts-and-osteocytes
#7
Vladana Domazetovic, Filippo Fontani, Damiano Tanini, Veronica D'Esopo, Caterina Viglianisi, Gemma Marcucci, Lucia Panzella, Alessandra Napolitano, Maria Luisa Brandi, Antonella Capperucci, Stefano Menichetti, Maria Teresa Vincenzini, Teresa Iantomasi
Resveratrol (RE), a polyphenolic compound present in some food and plants, is characterized by anti-inflammatory and antioxidant properties. However, it is quickly metabolized with consequent loss of its efficacy. In this study, the antioxidant effect of 2-phenyl-benzoselenophene derivatives (VD0, VD1 and VD3) was detected in intestinal myofibroblast and osteocyte cell lines in which the oxidative stress was induced by GSH depletion or starvation, respectively. In fact, the oxidative stress is involved in pathogenesis of inflammatory bowel diseases (IBD) and in increased osteoclastogenesis in osteoporosis...
July 20, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28735575/negotiating-the-complexities-of-exocrine-and-endocrine-dysfunction-in-chronic-pancreatitis
#8
Sinead N Duggan
Chronic pancreatitis is a chronic inflammatory disease of the pancreas characterised by irreversible morphological change and typically causing pain and/or permanent loss of function. This progressive, irreversible disease results in destruction of healthy pancreatic tissue and the development of fibrous scar tissue. Gradual loss of exocrine and endocrine function follows, along with clinical manifestations such as steatorrhoea, abdominal pain and diabetes. Nutrition in chronic pancreatitis has been described as a problem area and, until recently, there was little research on the topic...
July 24, 2017: Proceedings of the Nutrition Society
https://www.readbyqxmd.com/read/28734779/metabolic-bone-disease-in-preterm-infants-relationship-between-radiologic-grading-in-the-wrist-and-serum-biochemical-markers
#9
S K You, J E Lee, S M Lee, H-H Cho
PURPOSE: To assess the relationship between radiographic findings of metabolic bone disease (MBD) and serum biochemical markers in preterm infants. MATERIALS AND METHODS: A total of 159 preterm infants were included in this study. Two readers reviewed the wrist radiography for grading according to MBD severity. We recorded the levels of alkaline phosphatase (ALP) and phosphorous (P) immediately after birth, on the same day of the first wrist radiography (ALP-s, P-s), the highest/lowest ALP/P levels before the first wrist radiography (ALP-hb/P-lb) and during follow-up (ALP-h/P-l)...
July 19, 2017: Diagnostic and Interventional Imaging
https://www.readbyqxmd.com/read/28733716/osteosarcopenia-where-bone-muscle-and-fat-collide
#10
REVIEW
H P Hirschfeld, R Kinsella, G Duque
As the world's population ages, the prevalence of chronic diseases increases. Sarcopenia and osteoporosis are two conditions that are associated with aging, with similar risk factors that include genetics, endocrine function, and mechanical factors. Additionally, bone and muscle closely interact with each other not only anatomically, but also chemically and metabolically. Fat infiltration, a phenomenon observed in age-related bone and muscle loss, is highly prevalent and more severe in sarcopenic and osteoporotic subjects...
July 22, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28733125/modulation-of-inflammatory-and-immune-responses-by-vitamin-d
#11
REVIEW
Francesco Colotta, Birger Jansson, Fabrizio Bonelli
Vitamin D (VitD) is a prohormone most noted for the regulation of calcium and phosphate levels in circulation, and thus of bone metabolism. Inflammatory and immune cells not only convert inactive VitD metabolites into calcitriol, the active form of VitD, but also express the nuclear receptor of VitD that modulates differentiation, activation and proliferation of these cells. In vitro, calcitriol upregulates different anti-inflammatory pathways and downregulates molecules that activate immune and inflammatory cells...
July 18, 2017: Journal of Autoimmunity
https://www.readbyqxmd.com/read/28733032/pilose-antler-polypeptides-potentiates-osteoblast-differentiation-and-inhibits-osteoclastogenesis-via-manipulating-the-nf-%C3%AE%C2%BAb-pathway
#12
Guangwang Liu, Chao Ma, Peian Wang, Peiying Zhang, Xinhua Qu, Shen Liu, Zanjing Zhai, Degang Yu, Juan Gao, Jun Liang, Weixiang Dai, Lindong Zhou, Mengjiao Xia, Huilin Yang
Bones are inflexible yet ever-changing metabolic organs, and bone homeostasis is maintained through two delicately regulated processes: bone construction and bone reabsorption. An imbalance in bone metabolism is linked to most orthopedic diseases, including osteoporosis and rheumatoid arthritis. Importantly, tumor necrosis factor-α (TNF-α) blocks osteoblast differentiation and stimulates osteoclast formation, resulting in delayed deposition of new bone and accelerated bone resorption, especially in rheumatoid arthritis patients with inflammatory conditions...
July 18, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28731294/the-bioinorganic-chemistry-of-lead-in-the-context-of-its-toxicity
#13
Wolfgang Maret
Owing to its abundance on earth and its multiple uses by humans, lead (Pb) is a major toxicant that has threatened human health for millennia and continues to do so. There is no safe level of exposure, necessitating a nuanced approach to its control in the food we consume, the water we drink, and the air we breathe. Turnover in soft tissues is within days. In contrast, lead accumulates in bone and turns over with a half-life of about 30 years, though it can be mobilized from bone under physiological and pathophysiological conditions of bone resorption...
April 10, 2017: Metal Ions in Life Sciences
https://www.readbyqxmd.com/read/28730419/the-intriguing-connections-of-leptin-to-hyperparathyroidism
#14
REVIEW
Stergios A Polyzos, Leonidas Duntas, Jens Bollerslev
PURPOSE: Leptin has been implicated in bone metabolism, but the association with parathyroid gland function has not been fully clarified. This review aimed to summarize evidence of the association between leptin and hyperparathyroidism, both primary and secondary, elucidating the potential pathophysiologic and therapeutic consequences between leptin and parathyroid hormone, hopefully prompting the design of new studies. RESULTS: Experimental studies indicate a positive loop between leptin and parathyroid hormone in primary hyperparathyroidism...
July 20, 2017: Endocrine
https://www.readbyqxmd.com/read/28727417/oxygen-dependent-lipid-profiles-of-3d-cultured-human-chondrocytes-revealed-by-maldi-msi
#15
Brenda Bakker, Gert B Eijkel, Ron M A Heeren, Marcel Karperien, Janine N Post, Berta Cillero Pastor
Articular cartilage is exposed to a gradient of oxygen levels ranging from 5% at the surface to 1% in the deepest layers. While most cartilage research is performed in supraphysiological oxygen levels (19-21%), culturing chondrocytes under hypoxic oxygen levels (≤ 8%) promotes the chondrogenic phenotype. Exposure of cells to various oxygen levels alters their lipid metabolism, but detailed studies examining how hypoxia affects lipid metabolism in chondrocytes are lacking. To better understand the chondrocyte's behavior in response to oxygen we cultured 3D pellets of human primary chondrocytes in normoxia (20% oxygen) and hypoxia (2...
July 20, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28727174/alkaline-phosphatase-discovery-and-naming-of-our-favorite-enzyme
#16
Alejandro F Siller, Michael P Whyte
Alkaline phosphatase can be considered "our favorite enzyme" for reasons apparent to those who diagnose and treat metabolic bone diseases or who study skeletal biology. Few might know, however, that alkaline phosphatase likely represents the most frequently assayed enzyme in all of Medicine. Elevated activity in the circulation is universally recognized as a marker for skeletal or hepatobiliary disease. Nevertheless, the assay conditions in many ways are non-physiological. The term alkaline phosphatase emerged when it became necessary to distinguish "bone phosphatase" from the phosphatase in the prostate that features an acidic pH optimum...
July 20, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28726185/raising-awareness-on-the-therapeutic-role-of-cholecalciferol-in-ckd-a-multidisciplinary-based-opinion
#17
REVIEW
Sandro Giannini, Sandro Mazzaferro, Salvatore Minisola, Luca De Nicola, Maurizio Rossini, Mario Cozzolino
Vitamin D is recognized to play an essential role in health and disease. In kidney disease, vitamin D analogs have gained recognition for their involvement and potential therapeutic importance. Nephrologists are aware of the use of oral native vitamin D supplementation, however, uncertainty still exists with regard to the use of this treatment option in chronic kidney disease as well as clinical settings related to chronic kidney disease, where vitamin D supplementation may be an appropriate therapeutic choice...
July 19, 2017: Endocrine
https://www.readbyqxmd.com/read/28726113/glucocorticoid-sparing-effect-of-zoledronic-acid-in-sarcoid-hypercalcemia
#18
Mohammad Shafi Kuchay, Sunil Kumar Mishra, Beena Bansal, Khalid Jamal Farooqui, Lalitha Sekhar, Ambrish Mithal
INTRODUCTION: Glucocorticoids are regarded as first-line therapy in the management of hypercalcemia associated with sarcoidosis. However, prolonged glucocorticoid therapy leads to metabolic abnormalities, Cushingoid habitus, and impairment of bone health. This study demonstrates the efficacy and glucocorticoid-sparing effect of zoledronic acid in sarcoid hypercalcemia. METHODS: We present three patients with sarcoid hypercalcemia. They were successfully managed with oral glucocorticoids for many months...
December 2017: Archives of Osteoporosis
https://www.readbyqxmd.com/read/28725594/weekly-ascorbic-acid-infusion-in-castration-resistant-prostate-cancer-patients-a-single-arm-phase-ii-trial
#19
Torben K Nielsen, Martin Højgaard, Jon T Andersen, Niklas Rye Jørgensen, Bo Zerahn, Bent Kristensen, Trine Henriksen, Jens Lykkesfeldt, Kári J Mikines, Henrik E Poulsen
BACKGROUND: Ascorbic acid (AA) has in vivo cytotoxic properties at concentrations that can only be achieved through intravenous (IV) administration in humans. Treatment with intravenous AA is widely and increasingly used in complementary medicine despite a lack of clinical evidence for the efficacy of this treatment. METHODS: This non-comparative, single-center, phase II trial included patients with chemotherapy-naïve, metastatic castration-resistant prostate cancer (mCRPC) from an outpatient clinic to evaluate the efficacy and safety of IV AA therapy...
June 2017: Translational Andrology and Urology
https://www.readbyqxmd.com/read/28724394/development-of-newborn-screening-connect-nbs-connect-a-self-reported-patient-registry-and-its-role-in-improvement-of-care-for-patients-with-inherited-metabolic-disorders
#20
Yetsa Osara, Kathryn Coakley, Aishwarya Devarajan, Rani H Singh
BACKGROUND: Newborn Screening Connect (NBS Connect) is a web-based self-reported patient registry and resource for individuals and families affected by disorders included in the newborn screening panel. NBS Connect was launched in 2012 by Emory University after years of planning and grassroots work by professionals, consumers, and industry. Individuals with phenylketonuria (PKU), maple syrup urine disease (MSUD) or tyrosinemia (TYR) have been recruited through distribution of outreach materials, presentations at parent organization meetings and direct recruitment at clinic appointments...
July 19, 2017: Orphanet Journal of Rare Diseases
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