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Parathyroid

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https://www.readbyqxmd.com/read/28637206/improving-combination-osteoporosis-therapy-in-a-preclinical-model-of-heightened-osteoanabolism
#1
Yu Shao, Selene Hernandez-Buquer, Paul Childress, Keith R Stayrook, Marta B Alvarez, Hannah Davis, Lilian Plotkin, Yongzheng He, Keith W Condon, David B Burr, Stuart J Warden, Alexander G Robling, Feng-Chun Yang, Ronald C Wek, Matthew R Allen, Joseph P Bidwell
Combining anti-catabolic agents with parathyroid hormone (PTH) to enhance bone mass has yielded mixed results in osteoporosis patients. Towards the goal of enhancing the efficacy of these regimens, we tested their utility in combination with loss of the transcription factor Nmp4 since disabling this gene amplifies PTH-induced increases in trabecular bone in mice by boosting osteoblast secretory activity. We addressed whether combining a sustained anabolic response with an anti-catabolic results in superior bone acquisition compared to PTH mono-therapy...
June 20, 2017: Endocrinology
https://www.readbyqxmd.com/read/28636744/parathyroid-carcinoma-in-a-patient-with-three-prior-parathyroid-adenomas
#2
Michael Goldenberg, Henry Crist, Darrin V Bann
No abstract text is available yet for this article.
June 2017: Ear, Nose, & Throat Journal
https://www.readbyqxmd.com/read/28634697/in-psoriatic-arthritis-dkk-1-and-pth-are-lower-than-in-rheumatoid-arthritis-and-healthy-controls
#3
Angelo Fassio, Luca Idolazzi, Ombretta Viapiana, Camilla Benini, Elisabetta Vantaggiato, Francesco Bertoldo, Maurizio Rossini, Davide Gatti
Psoriatic Arthritis (PsA) is characterized by bone erosive damage often associated with exuberant bone formation especially in enthesial sites. Dkk-1 and sclerostin are the main inhibitors of the WNT/β-catenin signaling pathway and play a key role in the regulation of both bone formation and resorption. We performed this study in order to compare the serum levels of the WNT-pathway regulators along with bone turnover markers (BTM) and parathyroid hormone (PTH) between three different groups: one group of female patients affected by PsA, one group of female patients affected by rheumatoid arthritis (RA), and healthy female controls (HC)...
June 20, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28634117/to-assess-the-effects-of-parathyroidectomy-tptx-versus-tptx-at-for-secondary-hyperparathyroidism-in-chronic-renal-failure-a-meta-analysis
#4
REVIEW
Nian-Cun Qiu, Si-Luo Zha, Miao-E Liu, Zhi-Peng Du, Yi-Fan Wang, Qiang Wang, Qi Chen, Ying Jiang, Cheng-Xiang Shan, Ming Qiu
BACKGROUND: Secondary Hyperparathyroidism (SHPT) requiring parathyroidectomy (PTX) occurs more commonly in patients with progressive chronic kidney disease and in those on long-term lithium therapy. Successful PTX often results in a dramatic drop of parathyroid hormone level, relieves the patient from clinical symptoms, and reduces mortality. However, there is an ongoing debate on the optimal surgical treatment of SHPT. Currently, no clinical guidelines or trials have definitely answered the question of whether Total Parathyroidectomy (TPTX) is superior or equal to Total Parathyroidectomy with Autotransplantation (TPTX + AT)...
June 17, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28630836/teriparatide-treatment-improved-loosening-of-cementless-total-knee-arthroplasty-a-case-report
#5
Takashi Suzuki, Keinosuke Ryu, Kei Kojima, Shu Saito, Hiroshi Nagaoka, Yasuaki Tokuhashi
INTRODUCTION: Along with the increase of osteoporotic patients in an aging society, complications in surgeries associated with osteoporosis are also increasing. In cementless total knee arthroplasty (TKA), poor primary stability and subsequent initial loosening of the implant may be seen. CASE REPORT: The patient, a 75-year-old Asian woman with a history of osteoporosis, underwent cementless TKA. Knee radiography at 5 weeks postoperatively showed radiolucent lines outlined beneath the tibial tray and around the stem...
January 2017: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28630081/calcium-sensing-receptor-genotype-and-response-to-cinacalcet-in-patients-undergoing-hemodialysis
#6
Sharon M Moe, Leah Wetherill, Brian Scott Decker, Dongbing Lai, Safa Abdalla, Jin Long, Matteo Vatta, Tatiana M Foroud, Glenn M Chertow
BACKGROUND AND OBJECTIVES: We tested the hypothesis that single nucleotide polymorphisms (SNPs) in the calcium-sensing receptor (CASR) alter the response to the calcimimetic cinacalcet. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: We analyzed DNA samples in the Evaluation of Cinacalcet HCl Therapy to Lower Cardiovascular Events (EVOLVE) trial, a randomized trial comparing cinacalcet to placebo on a background of usual care. Of the 3883 patients randomized, 1919 (49%) consented to DNA collection, and samples from 1852 participants were genotyped for 18 CASR polymorphisms...
June 19, 2017: Clinical Journal of the American Society of Nephrology: CJASN
https://www.readbyqxmd.com/read/28628374/effects-of-a-multispecies-probiotic-supplement-on-bone-health-in-osteopenic-postmenopausal-women-a-randomized-double-blind-controlled-trial
#7
Sadegh Jafarnejad, Kurosh Djafarian, Mohammad Reza Fazeli, Mir Saeed Yekaninejad, Abdolrahman Rostamian, Seyed Ali Keshavarz
OBJECTIVE: The development of alternative approaches to prevent and/or treat osteoporosis, as a chronic progressive bone disease, is being considered currently. Among dietary supplements, probiotics may have favorable effects on bone metabolism. Therefore, the aim of this study was to evaluate the effects of a multispecies probiotic supplementation on bone biomarkers and bone density in osteopenic postmenopausal women. METHODS: This randomized double-blind placebo-controlled clinical trial was performed on 50 patients with osteopenia aged 50-72 years...
June 19, 2017: Journal of the American College of Nutrition
https://www.readbyqxmd.com/read/28627057/vitamin-d-metabolism-in-growing-pigs-influence-of-uvb-irradiation-and-dietary-vitamin-d-supply-on-calcium-homeostasis-its-regulation-and-bone-metabolism
#8
E Kolp, M R Wilkens, W Pendl, B Eichenberger, A Liesegang
The aim of this study was to prove whether pigs are able to synthesize vitamin D (vitD) in the skin and to investigate the influence of ultraviolet irradiation (UVB) on vitD status and calcium (Ca) homeostasis of growing pigs. Thirty-two 11-week-old pigs were kept without access to sunlight and divided into four groups receiving the following treatment in a 2 × 2 factorial design: (i) UVB irradiation or not and (ii) vitD in feed or not. Blood, urine and faeces were sampled every third week. In serum, vitD metabolites, Ca, phosphorus (P), magnesium (Mg) and bone markers were analysed...
June 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/28624872/abaloparatide-first-global-approval
#9
Matt Shirley
Abaloparatide (Tymlos™) is a synthetic peptide analogue of human parathyroid hormone-related protein that was developed by Radius Health as an osteoanabolic agent for the treatment of postmenopausal osteoporosis. Abaloparatide acts through selective activation of the parathyroid hormone type 1 receptor signalling pathway. In April 2017, subcutaneous abaloparatide received its first global approval, in the USA, for the treatment of postmenopausal women with osteoporosis at high risk for fracture, defined as a history of osteoporotic fracture, multiple risk factors for fracture, or patients who have failed or are intolerant to other available osteoporosis therapy...
June 17, 2017: Drugs
https://www.readbyqxmd.com/read/28624166/retrograde-thyroidectomy-for-preservation-of-the-external-branch-of-the-superior-laryngeal-nerve-a-case-series
#10
Vijay Naraynsingh, Shamir Cawich, Dale Hassranah, Ravi Maharaj, Shariful Islam, Yardesh Singh
BACKGROUND: The external branch of the Superior Laryngeal nerve (EBSLN) is at high risk of injury in surgery for large multinodular goitre (MNG) since the upper pole is high in the neck, well cephalad to the EBSLN. We present a technique of drawing the lobe caudally by retrograde thyroidectomy in order to minimize nerve injury. DESIGN & METHOD: All patients having surgery for benign MNG were included. Cases with previous thyroid surgery, malignant and toxic disease were excluded...
May 15, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28623033/anti-inflammatory-profile-of-paricalcitol-in-kidney-transplant-recipients
#11
Javier Donate-Correa, Fernando Henríquez-Palop, Ernesto Martín-Núñez, Carolina Hernández-Carballo, Carla Ferri, Nayra Pérez-Delgado, Mercedes Muros-de-Fuentes, Carmen Mora-Fernández, Juan F Navarro-González
BACKGROUND AND OBJECTIVES: Paricalcitol, a selective vitamin D receptor activator, is used to treat secondary hyperparathyroidism in kidney transplant patients. Experimental and clinical studies in non-transplant kidney disease patients have found this molecule to have anti-inflammatory properties. In this exploratory study, we evaluated the anti-inflammatory profile of paricalcitol in kidney-transplant recipients. METHODS: Thirty one kidney transplant recipients with secondary hyperparathyroidism completed 3 months of treatment with oral paricalcitol (1μg/day)...
June 13, 2017: Nefrología: Publicación Oficial de la Sociedad Española Nefrologia
https://www.readbyqxmd.com/read/28621914/distinguishing-parathyroid-and-thyroid-lesions-on-ultrasound-guided-fine-needle-aspiration-a-correlation-of-clinical-data-ancillary-studies-and-molecular-analysis
#12
Margaret Cho, Thaira Oweity, Tamar C Brandler, Karen Fried, Pascale Levine
BACKGROUND: Differentiating parathyroid and thyroid lesions can be challenging because of considerable morphologic overlap and anatomic proximity. Therefore, the authors sought to identify characteristic morphologic patterns and useful adjunct tests to distinguish these 2 entities. METHODS: A search was conducted in the study institution database for clinically indeterminate thyroid nodules from 2000 through 2016 with an emphasis on confirmed parathyroid nodules...
June 16, 2017: Cancer
https://www.readbyqxmd.com/read/28620554/clinical-phenotype-in-a-toddler-with-a-novel-heterozygous-mutation-of-the-vitamin-d-receptor
#13
Preneet Cheema Brar, Elena Dingle, John Pappas, Manish Raisingani
We present the clinical phenotype of a toddler who presented with vitamin D-resistant rickets, with one of the highest initial levels of alkaline phosphatase and parathyroid hormone (PTH) levels reported in the literature. The toddler had novel compound heterozygous mutations in the ligand-binding site of the vitamin D receptor and had an excellent response to calcitriol (1,25(OH)2D).
2017: Case Reports in Endocrinology
https://www.readbyqxmd.com/read/28619127/bone-mineral-disturbances-in-patients-with-chronic-kidney-disease-stage-5-not-yet-on-dialysis
#14
Andreja Marn Pernat, Matej Zrimšek
AIMS: This retrospective study evaluates the success of a treatment strategy for secondary hyperparathyroidism in our cohort of patients with chronic kidney disease stage 5 who were not yet on dialysis. MATERIALS AND METHODS: 81 predialysis patients from the outpatient clinic of the Department of Nephrology, University Medical Center Ljubljana were reviewed. We focused on serum markers for bone mineral metabolism including intact parathyroid hormone (PTH), phosphate, corrected calcium, and the usage of phosphate-binding agents and vitamin D analogs...
June 16, 2017: Clinical Nephrology
https://www.readbyqxmd.com/read/28617975/incidence-of-parathyroid-disorders-in-an-indian-adult-male-population-a-25-year-follow-up-study
#15
K V S Hari Kumar, S K Patnaik
CONTEXT AND OBJECTIVE: Detailed information on the epidemiology of parathyroid disorders in India is lacking. Most of the available data pertain to primary hyperparathyroidism (PHPT) rather than the overall burden of parathyroid disorders. We studied the incidence of parathyroid disorders in a cohort of service personnel followed for a long duration. DESIGN, SETTING AND PATIENTS: The data for this retrospective, descriptive epidemiological study were derived from the electronic medical records (EMR) of health care personnel enrolled between 1990 and 2015...
June 15, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28616220/impact-of-seasonality-on-the-dynamics-of-native-vitamin-d-repletion-in-long-term-renal-transplant-patients
#16
Oliver J Ziff, Hugo Penny, Sharon Frame, Antonia Cronin, David Goldsmith
Background: Renal transplant recipients (RTRs) are often Vitamin D (VitD) depleted as a result of both chronic kidney disease and mandated sun avoidance behaviours. Repleting VitD may be warranted, but how, and for how long, is unknown, as is the impact of seasonality on the success of repletion. We investigated the impact of seasonality on VitD status following VitD repletion in a large cohort of stable, long-term RTRs. Methods: Serum 25-hydroxyvitamin D [25(OH)D] concentrations and bone biochemistry parameters were analysed from 102 VitD repletion courses in 98 RTRs that had undergone VitD repletion...
June 2017: Clinical Kidney Journal
https://www.readbyqxmd.com/read/28616218/soluble-klotho-may-be-a-marker-of-phosphate-reabsorption
#17
Sven-Jean Tan, Edward R Smith, Stephen G Holt, Tim D Hewitson, Nigel D Toussaint
Background: Membrane-bound α-klotho functions as a co-receptor with fibroblast growth factor receptor at the renal tubule conferring specificity to fibroblast growth factor-23 (FGF-23), allowing it to inhibit tubular phosphate reabsorption at physiological concentrations. α-klotho also exists as a soluble protein. However, the complex interrelationships between soluble α-klotho (sKl), FGF-23 and phosphate reabsorption are poorly understood, with little known about the links between sKl, FGF-23 and phosphate reabsorption in chronic kidney disease (CKD)...
June 2017: Clinical Kidney Journal
https://www.readbyqxmd.com/read/28615947/treatment-of-secondary-hyperparathyroidism-the-clinical-utility-of-etelcalcetide
#18
REVIEW
Mario Cozzolino, Andrea Galassi, Ferruccio Conte, Michela Mangano, Luca Di Lullo, Antonio Bellasi
Secondary hyperparathyroidism (SHPT), a very frequent, severe, and worsening complication of chronic kidney disease, is characterized by high serum parathyroid hormone (PTH), parathyroid gland hyperplasia, and disturbances in mineral metabolism. Clinically, SHPT shows renal osteodystrophy, vascular calcification, cardiovascular damage, and fatal outcome. Calcium-sensing receptor (CaSR) is the main physiological regulator of PTH secretion; its activation by calcium rapidly inhibits PTH. Another important player in regulating mineral metabolism is vitamin D receptor (VDR), which is under the influence of vitamin D and influences the intestinal absorption of calcium and phosphate, PTH gene expression, and bone calcium mobilization...
2017: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/28614134/value-of-99mtc-mibi-spect-ct-parathyroid-imaging-and-ultrasonography-for-concomitant-thyroid-carcinoma
#19
Rui Guo, Jiqiu Wang, Min Zhang, Miao Zhang, Hongping Meng, Yifan Zhang, Biao Li
PURPOSE: We aimed to assess the frequency of carcinoma in cases with suspected parathyroid adenoma and test the value of Tc-methoxyisobutylisonitrile (Tc-MIBI) single-photon emission computed tomography/computed tomography (SPECT/CT) parathyroid imaging and neck ultrasonography in detecting concomitant thyroid carcinoma. PATIENTS AND METHODS: We enrolled 741 patients with clinically suspected parathyroid adenoma who underwent Tc-MIBI planer scans and SPECT/CT of the skull base, neck, and thorax; patients also underwent ultrasonography within 1 month before SPECT/CT...
June 13, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28614116/parathyroid-hormone-and-the-regulation-of-renal-tubular-calcium-transport
#20
Benjamin Ko
PURPOSE OF REVIEW: Renal tubule excretion of calcium is carefully and complexly regulated. At the center of this process, parathyroid hormone (PTH) is the chief regulator of renal calcium reabsorption. This review outlines our current understanding of PTH's effects on renal tubular calcium transport, focusing on the more recent discoveries beyond its direct regulation of epithelial Ca channel transient receptor potential vanilloid 5 (TRPV5) and looking at its interaction with sodium transport and the hormones fibroblast growth factor 23 (FGF23) and klotho...
June 12, 2017: Current Opinion in Nephrology and Hypertension
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