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https://www.readbyqxmd.com/read/28219093/-impact-of-vitamin-d-in-sports-does-vitamin-d-insufficiency-compromise-athletic-performance
#1
Sebastian Butscheidt, Tim Rolvien, Peter Ueblacker, Michael Amling, Florian Barvencik
: Introduction Vitamin D is essential for calcium homeostasis and regulates the expression of over 900 genes. It thereby influences musculoskeletal health and function. Additionally, multiple other effects were observed through the detection of vitamin D receptors (VDR) in numerous tissues of the human body. Material and Methods We reviewed the literature regarding evidence of the impact of vitamin D on musculoskeletal health and peak athletic performance. Results and Discussion It is well known that there is a high prevalence of vitamin D deficiency in the average European population...
February 20, 2017: Sportverletzung Sportschaden: Organ der Gesellschaft Für Orthopädisch-Traumatologische Sportmedizin
https://www.readbyqxmd.com/read/28203361/long-term-iron-polymaltose-infusions-associated-with-hypophosphataemic-osteomalacia-a-report-of-two-cases-and-review-of-the-literature
#2
REVIEW
Ramy H Bishay, Kirtan Ganda, Markus J Seibel
Iron-induced hypophosphataemic osteomalacia remains under-recognized as a potential complication of parenteral iron therapy. We here report two cases of symptomatic hypophosphataemic osteomalacia with multiple insufficiency fractures in the context of chronic gastrointestinal blood loss, necessitating monthly iron polymaltose infusions over prolonged periods of time. Respective blood tests revealed severe hypophosphataemia [0.29 and 0.43; normal range (NR) 0.8-1.5 mmol/l] in the presence of normal serum calcium and 25-hydroxy vitamin D levels...
January 2017: Therapeutic Advances in Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28193220/a-rare-case-of-multiple-phosphaturic-mesenchymal-tumors-along-a-tendon-sheath-inducing-osteomalacia
#3
Ryuta Arai, Tomohiro Onodera, Mohamad Alaa Terkawi, Tomoko Mitsuhashi, Eiji Kondo, Norimasa Iwasaki
BACKGROUND: Tumor-induced osteomalacia (TIO) is a rare paraneoplastic syndrome characterized by renal phosphate wasting, hypophosphatemia, reduction of 1,25-dihydroxyl vitamin D, and bone calcification disorders. Tumors associated with TIO are typically phosphaturic mesenchymal tumors that are bone and soft tissue origin and often present as a solitary tumor. The high production of fibroblast growth factor 23 (FGF23) by the tumor is believed to be the causative factor responsible for the impaired renal tubular phosphate reabsorption, hypophosphatemia and osteomalacia...
February 13, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28182049/tumor-induced-hypophosphatemia
#4
M Mulani, K Somani, S Bichu, V Billa
Significant hypophosphatemia is commonly due to Vitamin D deficiency. Any sporadic onset of hypophosphatemia in adults warrants workup to identify alternate causes. Hypophosphatemia may also be the only manifestation of an occult malignancy. A high index of clinical suspicion can help diagnose such conditions in early stages. Prompt treatment of the cause can correct this biochemical abnormality. We describe a case report of a woman presenting with severe hypophosphatemia and osteomalacia, leading eventually to the diagnosis of a phosphaturic mesenchymal tumor of the temporo-occipital bone...
January 2017: Indian Journal of Nephrology
https://www.readbyqxmd.com/read/28181822/oncogenic-osteomalacia-role-of-ga-68-dotanoc-pet-ct-scan-in-identifying-the-culprit-lesion-and-its-management
#5
Deepa Singh, Mudalsha Ravina, Narvesh Kumar, Veeresh Dube, Utham Kumar K, Manish Dixit, Sanjay Gambhir
OBJECTIVES: The aim of this study was to evaluate role of (68)Ga-DOTANOC PET/CT scan in localization of culprit lesion for biopsy and required intervention (surgical excision/radiofrequency ablation) in patients with long standing oncogenic osteomalacia (OOM)/tumor induced osteomalacia (TIO). METHODS: 17 patients (08 male & 09 female) underwent (68)Ga-DOTANOC PET/CT scan. The patients referred with clinical and biochemical evidence of hypophosphatemia and raised Fibroblast Growth Factor-23 (FGF-23)...
February 9, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28180054/anterior-skull-base-glomangioma-induced-osteomalacia
#6
Malia S Gresham, Steven Shen, Yi J Zhang, Kelly Gallagher
Oncogenic osteomalacia (OO) is an uncommon but treatable cause of osteomalacia related to tumor production of FGF23, usually caused by benign mesenchymal neoplasms. Paranasal sinus glomangiomas are a rare cause of OO, with only one previously reported case. Here we describe a second case (first reported in English) of paranasal sinus glomangioma-induced osteomalacia in a 42-year-old man. He presented with weakness and multiple spontaneous fractures, and was found to have an ethmoid sinus glomangioma with intracranial extension...
January 2017: Journal of Neurological Surgery Reports
https://www.readbyqxmd.com/read/28123260/musculoskeletal-oncogenic-osteomalacia-an-experience-from-a-single-centre-in-south-india
#7
Anil Satyaraddi, Kripa Elizabeth Cherian, Sahana Shetty, Nitin Kapoor, Felix K Jebasingh, Vinoo Mathew Cherian, Julie Hephzibah, Anne Jennifer Prabhu, Nihal Thomas, Thomas V Paul
BACKGROUND: Oncogenic osteomalacia is an acquired form of hypophosphatemic osteomalacia where the tumour resection may lead to cure of the disease. Tumours originating from the musculoskeletal region form an important subgroup of oncogenic osteomalacia. METHODS: This was a retrospective study conducted at a tertiary care centre in south India where we analyzed the hospital records of all the patients with musculoskeletal oncogenic osteomalacia from January 2010-April 2016...
March 2017: Journal of Orthopaedics
https://www.readbyqxmd.com/read/28119439/successful-treatment-of-tumour-induced-osteomalacia-after-resection-of-an-oral-peripheral-ossifying-fibroma
#8
Mark Anthony Santiago Sandoval, Majorie Amoroto Palermo, Ryner Carrillo, Rafael Bundoc, Jose Ma Carnate, Romelito Jose Galsim
Tumour-induced osteomalacia is a paraneoplastic syndrome wherein bone is affected by a hormone from a tumour that causes renal phosphate wasting and hypophosphataemia. Here, we present the case of a 31-year-old man who has been suffering from generalised bone pains and a spine deformity that led to loss of height. Pertinent findings are low serum phosphorus, low vitamin D and decreased bone mineral density. These findings led to a diagnosis of osteomalacia. However, the finding of an oral mass raised some questions as to what role it plays in the patient's disease...
January 24, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28070260/relationship-between-bone-density-and-biochemical-markers-of-bone-among-two-groups-taking-carbamazepine-and-sodium-valproate-for-epilepsy-in-comparison-with-healthy-individuals-in-yazd
#9
Abolghasem Rahimdel, Ali Dehghan, Mahboubeh Abolhassani Moghadam, Ali Mellat Ardekani
INTRODUCTION: Chronic antiepileptic therapy has been associated with metabolic bone diseases including osteomalacia and osteoporosis. The aim of this study was to determine frequency of changes in biochemical and bone mineral density (BMD) in adults receiving valproaic acid (VPA) & carbamazepine (CBZ). METHODS: In a cross sectional study evaluating adults (age 20-50 y) epileptic patients receiving valproic acid or carbamazepine for at least 2 years. This study was conducted from May 2014 to May 2015 in Shahid Sadoughi Hospital of Yazd University of Medical Science, Yazd, Iran...
November 2016: Electronic Physician
https://www.readbyqxmd.com/read/28025958/localization-of-ectopic-fibroblast-growth-factor-23-production-in-tumor-induced-osteomalacia-using-selective-venous-samplings
#10
Karyne Pelletier, Stéphan Troyanov, Jean-François Guité, Louis-Georges Sainte-Marie, David Roberge, Myriam Lessard
No abstract text is available yet for this article.
February 2017: Clinical Nephrology
https://www.readbyqxmd.com/read/28025475/-a-case-of-tenofovir-associated-fanconi-syndrome-in-patient-with-chronic-hepatitis-b
#11
Dongwoo Kim, Jongjin Lee, Dae Ha Kim, Kyuho Kang, Sang Jun Suh, Young Kul Jung, Hyung Joon Yim
Tenofovir disoproxil fumarate (TDF) is one of the most widely used treatment options for human immunodeficiency virus (HIV) and HBV infections. Despite its efficacy and safety, some cases of nephrotoxicity have been reported in the treatment of HIV patients. Even more recently, very few cases of Fanconi syndrome associated with tenofovir therapy in HBV monoinfection have been reported. Herein, we report a case of a 47-year-old male with an HBV monoinfection, who developed Fanconi syndrome and a secondary osteomalacia with multiple bone pain...
December 25, 2016: Korean Journal of Gastroenterology, Taehan Sohwagi Hakhoe Chi
https://www.readbyqxmd.com/read/28012328/oncogenic-hypophosphatemic-osteomalacia-from-the-first-signal-of-disease-to-the-first-signal-of-healthy
#12
Arthur Paredes Gatti, Luiza Tonello, João Alfredo Diedrich Neto, Uirá Fernandes Teixeira, Marcos Bertozzi Goldoni, Paulo Roberto Ott Fontes, José Artur Sampaio, Luiz Maraninchi Pereira Lima, Fábio Luiz Waechter
INTRODUCTION: The physical incapacitation of the oncogenic hypophosphatemic osteomalacia (OHO) can be catastrophic and can lead to deformities, metabolic and organic instability and death. The only positive outcome is through early diagnosis by the clinical suspicion. At this moment, medical center infrastructure is also a keypoint. PRESENTATION OF CASE: This case report is about a 60-year old woman with multiple fractures, gradual loss of strength and muscle mass and limiting deformities in two years of evolution until the diagnostic...
November 27, 2016: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28003569/assessment-criteria-for-vitamin-d-deficiency-insufficiency-in-japan-proposal-by-an-expert-panel-supported-by-research-program-of-intractable-diseases-ministry-of-health-labour-and-welfare-japan-the-japanese-society-for-bone-and-mineral-research-and-the-japan
#13
Ryo Okazaki, Keiichi Ozono, Seiji Fukumoto, Daisuke Inoue, Mika Yamauchi, Masanori Minagawa, Toshimi Michigami, Yasuhiro Takeuchi, Toshio Matsumoto, Toshitsugu Sugimoto
Vitamin D is indispensable for the maintenance of bone and mineral health. Inadequate vitamin D action increases the risk for various musculoskeletal/mineral events including fracture, fall, secondary hyperparathyroidism, diminished response to antiresorptives, rickets/osteomalacia, and hypocalcemia. Its most common cause in recent years is vitamin D deficiency/insufficiency, clinically defined by low serum 25-hydroxyvitamin D [25(OH)D] level. Guidelines for vitamin D insufficiency/deficiency defined by serum 25(OH)D concentrations have been published all over the world...
December 20, 2016: Endocrine Journal
https://www.readbyqxmd.com/read/27995499/idiopathic-hypophosphatemic-osteomalacia-recurrent-pseudofracture-of-the-proximal-femur-in-a-65-year-old-man
#14
Yi-Xuan Chen, You-Shui Gao
No abstract text is available yet for this article.
February 2017: Endocrine
https://www.readbyqxmd.com/read/27994603/fibroblast-growth-factor-23-and-hypophosphatemia-a-case-of-hypophosphatemia-along-the-rickets-osteomalacia-spectrum
#15
REVIEW
George T Georges, O Nájera, Kurt Sowers, James R Sowers
Phosphorus is a key component of bone, and a deficiency results in poor mineralization along with other systemic symptoms of hypophosphatemia. Various causes of hypophosphatemia with renal wasting of phosphorus have been identified. These include the Fanconi syndrome, various genetic mutations of fibroblast growth factor 23 (FGF23) handling and the sodium/phosphate cotransporter, and those due to FGF23 secretion by mesenchymal tumors. Depending on the cause, vitamin D metabolism may also be impaired, which may amplify the deficiency in phosphorus and render treatment more challenging...
November 2016: Cardiorenal Medicine
https://www.readbyqxmd.com/read/27979577/vitamin-d-measurement-standardization-the-way-out-of-the-chaos
#16
REVIEW
N Binkley, B Dawson-Hughes, R Durazo-Arvizu, M Thamm, L Tian, J M Merkel, J C Jones, G D Carter, C T Sempos
Substantial variability is associated with laboratory measurement of serum total 25-hydroxyvitamin D [25(OH)D]. The resulting chaos impedes development of consensus 25(OH)D values to define stages of vitamin D status. As resolving this situation requires standardized measurement of 25(OH)D, the Vitamin D Standardization Program (VDSP) developed methodology to standardize 25(OH)D measurement to the gold standard reference measurement procedures of NIST, Ghent University and CDC. Importantly, VDSP developed protocols for standardizing 25(OH)D values from prior research based on availability of stored serum samples...
December 12, 2016: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/27973461/bone-metabolism-in-non-alcoholic-fatty-liver-disease-vitamin-d-status-and-bone-mineral-density
#17
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/27929669/fgf23-is-not-required-to-regulate-fetal-phosphorus-metabolism-but-exerts-effects-within-12-hours-after-birth
#18
Yue Ma, Beth J Kirby, Nicholas A Fairbridge, Andrew C Karaplis, Beate Lanske, Christopher S Kovacs
Loss of fibroblast growth factor 23 (FGF23) causes hyperphosphatemia, extraskeletal calcifications, and early mortality; excess FGF23 causes hypophosphatemia with rickets or osteomalacia. However, FGF23 may not be important during fetal development. FGF23 deficiency (Fgf23 null) and FGF23 excess (Phex null) did not alter fetal phosphorus or skeletal parameters. In this study we further tested our hypothesis that FGF23 is not essential for fetal phosphorus regulation but becomes important after birth. Although co-receptor Klotho null adults have extremely high FGF23 concentrations, intact FGF23 was normal in Klotho null fetuses, as were fetal phosphorus and skeletal parameters, and placental and renal expression of FGF23 target genes...
December 8, 2016: Endocrinology
https://www.readbyqxmd.com/read/27921126/successful-ct-guided-cryoablation-of-phosphaturic-mesenchymal-tumor-in-the-soft-tissues-causing-tumor-induced-osteomalacia-a-case-report
#19
Sophie Cowan, Santiago A Lozano-Calderon, Raul N Uppot, Dipti Sajed, Ambrose J Huang
We report the case of a 25-year-old male patient with tumor-induced osteomalacia from a 1.8-cm phosphaturic mesenchymal tumor in the right distal thigh, who was treated at our institution with a single session of CT-guided cryoablation in December 2015, which resulted in biochemical and clinical resolution. We present the clinical history, physical examination, biochemistry, functional imaging, anatomic characterization, and follow-up for clinical outcome. The response to treatment was documented in terms of normalization of serum fibroblastic growth factor 23 (FGF23) and phosphorous levels, symptomatic improvement, as well as normalization of bone mineralization on femur radiographs 3 months after the procedure...
February 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/27900654/-slow-and-steady-wins-the-race-the-importance-of-perseverance-in-the-management-of-oncogenic-osteomalacia
#20
EDITORIAL
Maria Manara, Luigi Sinigaglia
No abstract text is available yet for this article.
November 29, 2016: Endocrine
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