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https://www.readbyqxmd.com/read/28538380/acute-effects-of-cinacalcet-on-arterial-stiffness-and-ventricular-function-in-hemodialysis-patients-a-randomized-double-blinded-crossover-study
#1
Aurélie Poulin, Pierre-Luc Bellemare, Catherine Fortier, Fabrice Mac-Way, Simon Desmeules, Karine Marquis, Valérie Gaudreault, Marcel Lebel, Mohsen Agharazii
BACKGROUND: Serum calcium concentration (Ca) plays an essential role in a vascular muscle tone and myocardial contractility. Previously, we showed that acutely lowering Ca by hemodialysis reduced arterial stiffness. Cinacalcet is a calcimimetic that lowers Ca and parathyroid hormone (PTH). The aim of the present study was to examine whether acute lowering of Ca by cinacalcet improves vascular stiffness and myocardial diastolic dysfunction. METHOD: This is a double-blinded randomized placebo-controlled crossover study that included 21 adult patients with end-stage kidney disease undergoing chronic hemodialysis...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28537925/preoperative-vitamin-d-deficiency-and-postoperative-hypocalcemia-in-thyroid-cancer-patients-undergoing-total-thyroidectomy-plus-central-compartment-neck-dissection
#2
Xiaofei Wang, Jingqiang Zhu, Feng Liu, Yanping Gong, Zhihui Li
BACKGROUND: There appears to be a lack of consensus whether preoperative vitamin D deficiency (VDD) increases the risk of postoperative hypocalcemia and decreases the accuracy of postoperative parathyroid hormone (PTH) in predicting hypocalcemia in thyroid cancer patients undergoing total thyroidectomy (TT) plus central compartment neck dissection (CCND). This study aims to address these issues. METHOD: All consecutive thyroid cancer patients who underwent TT plus CCND were retrospectively reviewed through a prospectively collected database between October 2015 and April 2016 in a tertiary referral hospital...
May 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28534698/effect-of-parathyroid-hormone-on-healing-in-osteoporotic-fractures-via-a-phospholipase-c-independent-pathway
#3
Wei-Long Li, Xiao Yu, Zhi-Ping Huang, Qing-Jiang Pang
Objective This study was performed to investigate the effect of parathyroid hormone (PTH) on healing in osteoporotic fractures via a phospholipase C (PLC)-independent pathway and explore the mechanism of PTH-mediated bone formation. Methods Ninety-six 12-week-old C57BL/6J female mice underwent bilateral ovariectomy. One month later, the lower third of the femur was fractured and the mice were treated using saline, PTH(1-28), PTH(1-34), zoledronic acid (ZA), PTH(1-28)+ZA, and PTH(1-34)+ZA. The mice were killed at weeks 2 and 4 in each group...
January 1, 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28534087/interspecies-differences-in-pth-mediated-pka-phosphorylation-of-the-epithelial-calcium-channel-trpv5
#4
Mark K van Goor, Sjoerd Verkaart, Teunis J van Dam, Martijn A Huynen, Jenny van der Wijst
The epithelial calcium (Ca(2+)) channel TRPV5 (transient receptor potential vanilloid 5) is expressed in the distal convoluted tubule of the kidney and facilitates active Ca(2+) reabsorption. This process is instrumental for the maintenance of Ca(2+) homeostasis. Therefore, all aspects of TRPV5 function are tightly regulated by the calciotropic parathyroid hormone (PTH). Rabbit (rb)TRPV5 channel activity was shown to be stimulated upon PTH-mediated protein kinase A (PKA) phosphorylation. Since there is incomplete conservation of the PKA consensus motif (RR/QxT) across species, the aim of this study was to extend these findings to humans and characterize the expression and function of human (h)TRPV5...
May 22, 2017: Pflügers Archiv: European Journal of Physiology
https://www.readbyqxmd.com/read/28533650/extensive-visceral-calcification-demonstrated-on-99m-tc-mdp-bone-scan-in-patient-with-carcinoma-penis-and-hypercalcemia-of-malignancy
#5
Sunny J Gandhi, Bhavdeep Rabadiya
Hypercalcemia is a common life-threatening complication associated with several malignancies. Parathyroid-related peptide has been shown to cause hypercalcemia in several solid tumors but rarely in penile cancer. We report a case of penile cancer with hypercalcemia causing metastatic visceral calcification in lungs, liver, and stomach detected on bone scan without significant abnormalities on CT scan.
April 2017: Indian Journal of Nuclear Medicine: IJNM: the Official Journal of the Society of Nuclear Medicine, India
https://www.readbyqxmd.com/read/28533644/atypical-parathyroid-adenoma-with-multiple-brown-tumors-as-initial-presentation-a-rare-entity
#6
V S Krishna Mohan, Manishi L Narayan, Arun Mukka, Bharath Bachimanchi, Amit Kumar Chowhan, B Vijayalakshmi Devi, Suresh Vaikkakara, Alok Sachan
Brown tumors seen in hyperparathyroidism are rare, non-neoplastic lesions because of abnormal bone metabolism, and they can mimic benign bone tumors or malignancy. Although biopsy is considered as the gold standard for diagnosis, it can be inconclusive. As the diagnosis of brown tumors is often challenging, a high index of suspicion is essential for diagnosis. We present a case of 21-year-old woman who presented with multiple painful bony lesions, which were initially misdiagnosed as fibrous dysplasia. Due to persistent bone pain and deterioration in her physical mobility, she was referred to tertiary care centre...
April 2017: Indian Journal of Nuclear Medicine: IJNM: the Official Journal of the Society of Nuclear Medicine, India
https://www.readbyqxmd.com/read/28533500/primary-hyperparathyroidism-diagnosis-and-management-in-2017
#7
Hamid Syed, Aliya Khan
Primary hyperparathyroidism is a relatively common endocrine condition which is being increasingly identified in its asymptomatic stage following  routine evaluation of serum calcium. The effects of parathyroid hormone and calcium excess  impact multiple organ systems. The greatest effects are seen on the skeleton and on the kidney. This overview will describe the advances in diagnosis, presentation, and management of primary hyperparathyroidism today.
May 23, 2017: Polish Archives of Internal Medicine
https://www.readbyqxmd.com/read/28528472/early-prediction-of-hypocalcemia-following-thyroid-surgery-a-prospective-randomized-clinical-trial
#8
Alessandra Saba, Mauro Podda, Antonio Messina Campanella, Adolfo Pisanu
PURPOSE: The aim of this randomized-controlled trial was to validate the results of a previous prospective single-cohort observational study conducted in the same surgical unit regarding the use of concomitant intact parathyroid hormone (iPTH) and serum calcium measurement in predicting hypocalcemia after total thyroidectomy. METHODS: From January 2014 to January 2015, 150 patients underwent total thyroidectomy in our department and were randomized into two groups...
May 20, 2017: Langenbeck's Archives of Surgery
https://www.readbyqxmd.com/read/28527123/clinical-profile-of-juvenile-primary-hyperparathyroidism-a-prospective-study
#9
Federica Saponaro, Claudio Marcocci, Federica Cacciatore, Mario Miccoli, Elena Pardi, Simona Borsari, Gabriele Materazzi, Paolo Miccoli, Filomena Cetani
INTRODUCTION: Juvenile primary hyperparathyroidism is uncommon and more symptomatic than the adult counterpart. The aim of this prospective monocentric study, conducted in a tertiary referral center, was to evaluate the clinical, biochemical, and densitometric data, and the outcome of a series of patients with juvenile primary hyperparathyroidism. MATERIAL AND METHODS: The study group included 154 patients with sporadic and familial juvenile primary hyperparathyroidism, aged ≤40 years...
May 20, 2017: Endocrine
https://www.readbyqxmd.com/read/28525934/parathyroid-hormone-levels-predict-long-term-outcome-after-operative-management-of-parathyroid-cancer
#10
Andreas Machens, Kerstin Lorenz, Henning Dralle
The role of parathyroid hormone (PTH) serum levels for prediction of outcome is ill defined for parathyroid cancer, which is a very rare disease. This investigation of 17 consecutive patients with parathyroid cancer, (re-)operated on at a tertiary referral center between 1994 and July 2016, with a mean follow-up of 179.6 months (15 years) aimed to clarify the suitability of PTH serum levels for prediction of clinical outcome after comprehensive operative management of parathyroid cancer. Cancer-specific mortality occurred significantly more often with the performance of sternotomy before or at first operation at this institution (80 vs...
May 19, 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/28525313/a-tunable-three-dimensional-in-vitro-culture-model-of-growth-plate-cartilage-using-alginate-hydrogel-scaffolds
#11
Alek G Erickson, Taylor D Laughlin, Sarah M Romereim, Catherine N Sargus-Patino, Angela K Pannier, Andrew T Dudley
Defining the final size and geometry of engineered tissues through precise control of the scalar and vector components of tissue growth is a necessary benchmark for regenerative medicine, but it has proved to be a significant challenge for tissue engineers. The growth plate cartilage that promotes elongation of the long bones is a good model system for studying morphogenetic mechanisms because cartilage is composed of a single cell type, the chondrocyte; chondrocytes are readily maintained in culture; and growth trajectory is predominately in a single vector...
May 18, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28524839/surgery-for-ectopic-parathyroid-adenoma-in-lower-part-of-superior-mediastinum-through-a-transcervical-incision
#12
Xing Wang, Yi-Ming Zhu, Hui Huang, Li-Peng Zhang, Ye Zhang, Xiao-Lei Wang
No abstract text is available yet for this article.
June 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28523792/the-impact-of-calcineurin-inhibitors-on-neutrophil-gelatinase-associated-lipocalin-and-fibroblast-growth-factor-23-in-long-term-kidney-transplant-patients
#13
Inger Hjørdis Bleskestad, Inga Strand Thorsen, Grete Jonsson, Øyvind Skadberg, Lasse Gunnar Gøransson
BACKGROUND: Neutrophil gelatinase-associated lipocalin (NGAL), a protein with bacteriostatic functions rapidly excreted from stimulated or damaged epithelial cells, is elevated in acute and chronic kidney disease. A calcineurin dependent signaling pathway for fibroblast growth factor 23 (FGF23) has been revealed, but the effect of calcineurin inhibitors (CNIs) on the levels of NGAL and markers of mineral metabolism in long-term kidney transplant patients has not been explored. METHODS: In a cross-sectional study, 39 patients who received a first kidney transplant more than 10 years ago were split into two groups based on whether (n=28) or not (n=11) they used CNIs...
May 19, 2017: Clinical Transplantation
https://www.readbyqxmd.com/read/28522130/primary-hyperparathyroidism-hypercalciuria-and-bone-recovery-after-parathyroidectomy
#14
Inga-Lena Nilsson, Sophie Norenstedt, Jan Zedenius, Ylva Pernow, Robert Bränström
BACKGROUND: In primary hyperparathyroidism, successful parathyroidectomy leads to improved bone mineral density in the majority of cases. Our aim was to further explore the relationship between hypercalciuria, kidney function, and bone recovery after parathyroidectomy. METHODS: Bone mineral density, estimated glomerular filtration rate, and 24-hour urinary calcium were analyzed before and one year after parathyroidectomy in a cohort of 150 primary hyperparathyroidism patients (119 women; median age 60 [range 30-80] years) taking part in a clinical trial...
May 15, 2017: Surgery
https://www.readbyqxmd.com/read/28516785/measurement-of-intact-parathormone-during-operation-for-primary-hyperparathyroidism
#15
P Libansky, S Adamek, P Broulik, M Fialova, J Kubinyi, J Sedy, P Pafko, D Yershov, R Lischke
In this prospective study, the role of the intact parathormone (iPHT) levels for the verification of pathologic parathyroid tissue removal during parathyroidectomy, was analyzed in 441 patients diagnosed with primary hyperparathyroidism. The level of intact parathormone was obtained before the initial incision (baseline level) and 10 minutes after the pathologic parathyroid gland removal (control value). In 80 % of cases, the decrease of intact parathormone was more than 50 % of the baseline level. The comparison of preoperative and postoperative intact parathormone levels can also be used as marker of parathyroid hyperplasia or persistent hyperparathyroidism...
2017: Bratislavské Lekárske Listy
https://www.readbyqxmd.com/read/28516132/life-threatening-hypercalcemia-during-prodrome-of-pneumocystis-jiroveci-pneumonia-in-an-immunocompetent-infant
#16
Judith Sebestyen VanSickle, Tarak Srivastava, Uri S Alon
Severe hypercalcemia in infants is usually attributed to genetic etiologies and less commonly to acquired ones. An 8-week-old girl presented with failure to thrive, mild respiratory distress, and life-threatening hypercalcemia (23.5 mg/dL). Serum 1,25(OH)2-vitamin D (1,25(OH)2-D) level was elevated and parathyroid hormone undetectable. Evaluation for genetic mutations and malignant etiologies of hypercalcemia was negative. Treatment with intravenous hydration, loop diuretic, and calcitonin failed to correct the hypercalcemia, which was subsequently controlled with bisphosphonate therapy...
2017: Global Pediatric Health
https://www.readbyqxmd.com/read/28515208/glucocorticoid-responsive-lymphocytic-parathyroiditis-and-hypocalciuric-hypercalcemia-due-to-autoantibodies-against-the-calcium-sensing-receptor-a-case-report-and-literature-review
#17
Li Song, Liping Liu, R Tyler Miller, Shirley X Yan, Nancy Jackson, Shelby A Holt, Naim M Maalouf
OBJECTIVE: Autoimmune lymphocytic parathyroiditis and acquired hypocalciuric hypercalcemia associated with autoantibodies against the calcium-sensing receptor (anti-CaSR) are rare and poorly understood conditions. Here, we describe a patient with acquired parathyroid hormone (PTH)-dependent hypercalcemia with associated hypocalciuria, found to have true lymphocytic parathyroiditis on histopathology, and circulating anti-CaSR antibodies in serum. DESIGN AND METHODS: A 64-year-old woman was referred to our clinic for persistent hypercalcemia after a subtotal parathyroidectomy...
July 2017: European Journal of Endocrinology
https://www.readbyqxmd.com/read/28512409/immunoglobulin-d-multiple-myeloma-presenting-as-spontaneous-fracture
#18
Samer Al Hadidi, Khalil Katato, Ghassan Bachuwa
Immunoglobulin D multiple myeloma is a rare type of multiple myeloma that usually presents as bone pain, fatigue, or weight loss. We report a case of immunoglobulin D multiple myeloma in a 53-year-old Caucasian male patient with previous medical history of anaplastic oligodendroglioma status post-surgical resection who was evaluated for back pain while mowing the lawn. His physical examination showed tenderness over the lower thoracic vertebrae with no sensory or motor impairment. Initial lab investigations showed normocytic anemia and hypercalcemia with low parathyroid hormone...
January 2017: Case Reports in Oncology
https://www.readbyqxmd.com/read/28509078/the-effects-of-vitamin-d-supplementation-on-proatherogenic-inflammatory-markers-and-carotid-intima-media-thickness-in-subjects-with-metabolic-syndrome-a-randomized-double-blind-placebo-controlled-clinical-trial
#19
Shabnam Salekzamani, Abolhassan Shakeri Bavil, Hossein Mehralizadeh, Mohammad Asghari Jafarabadi, Aymaral Ghezel, Bahram Pourghassem Gargari
PURPOSE: Metabolic syndrome may predispose to cardiovascular diseases. Since, in recent studies, vitamin D is advocated for cardioprotective roles, this study was designed to investigate the effects of vitamin D supplementation on proatherogenic inflammatory markers and common carotid intima media thickness in subjects with metabolic syndrome. METHODS: This randomized double blind clinical trial was conducted in Tabriz, Iran. Eligible subjects (n = 80) with metabolic syndrome were recruited thorough advertisement and randomized to receive either vitamin D (50,000 IU/week) or matching placebo for 16 weeks...
May 16, 2017: Endocrine
https://www.readbyqxmd.com/read/28508965/cinacalcet-in-hyperparathyroidism-management-after-pediatric-renal-transplantation
#20
Olivier Niel, Anne Maisin, Marie-Alice Macher, Michel Peuchmaur, Georges Deschênes
Secondary hyperparathyroidism is often associated with end stage renal disease; even after renal transplantation, hyperparathyroidism may persist, and is responsible for hypercalcemia, hypophosphatemia and elevated parathyroid hormone (iPTH) levels. Parathyroid hyperplasia is frequently associated with persistent hyperparathyroidism, and may require a surgical treatment. Here, we report hyperparathyroidism along with parathyroid hyperplasia in a 7-year-old child, which persisted after renal transplant. Calcitonin and pamidronate failed to decrease serum calcium levels; clodronate was also inefficient...
November 2016: CEN Case Reports
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