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parathyroid-like hormone

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https://www.readbyqxmd.com/read/29330344/parathyroid-hormone-related-protein-exhibits-antioxidant-features-in-osteoblastic-cells-through-its-n-terminal-and-osteostatin-domains
#1
S Portal-Núñez, J A Ardura, D Lozano, I Martínez de Toda, M De la Fuente, G Herrero-Beaumont, R Largo, P Esbrit
OBJECTIVES: Oxidative stress plays a major role in the onset and progression of involutional osteoporosis. However, classical antioxidants fail to restore osteoblast function. Interestingly, the bone anabolism of parathyroid hormone (PTH) has been shown to be associated with its ability to counteract oxidative stress in osteoblasts. The PTH counterpart in bone, which is the PTH-related protein (PTHrP), displays osteogenic actions through both its N-terminal PTH-like region and the C-terminal domain...
January 2018: Bone & Joint Research
https://www.readbyqxmd.com/read/29241212/serum-magnesium-abnormality-and-influencing-factors-of-serum-magnesium-level-in-peritoneal-dialysis-patients-a-single-center-study-in-northern-china
#2
Shihming Tsai, Huiping Zhao, Bei Wu, Li Zuo, Mei Wang
BACKGROUND/AIMS: Both hypomagnesemia and hypermagnesemia have been associated with cardiovascular diseases, bone diseases, and mortality in dialysis patients. We aimed to investigate the prevalence of and influencing factors for abnormal serum Mg levels in patients on peritoneal dialysis (PD). METHODS: A cross-sectional study in Peking University People's Hospital recorded the demographic information, clinical characteristics, and laboratory data. Data were assessed and compared with the results from 2 other studies in China...
December 14, 2017: Blood Purification
https://www.readbyqxmd.com/read/29239604/nitrosoreductase-like-nanocatalyst-for-ultrasensitive-and-stable-biosensing
#3
Ponnusamy Nandhakumar, Byeongyoon Kim, Nam-Sihk Lee, Young Ho Yoon, Kwangyeol Lee, Haesik Yang
Enzyme-like nanocatalytic reactions developed for high signal amplification in biosensors are of limited use because of their low reaction rates and/or unwanted side reactions in aqueous electrolyte solutions containing dissolved O2. Herein, we report a nitrosoreductase-like catalytic reaction, employing 4-nitroso-1-naphthol, Pd nanoparticles, and H3N-BH3, which affords a high reaction rate and minimal side reactions, enabling its use in ultrasensitive electrochemical biosensors. 4-Nitroso-1-naphthol was chosen after five hydroxy-nitro(so)arene compounds were compared in terms of high signal and low background levels...
December 14, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/29226737/pseudoxanthoma-elasticum-like-in-%C3%AE-thalassemia-major-a-matter-of-%C3%AE-klotho-and-parathyroid-hormone
#4
Alessandro Baldan, Andrea Giusti, Cristina Bosi, Cristina Malaventura, Gianluca Forni, Caterina Borgna-Pignatti
Pseudoxanthoma elasticum-like (PXL) condition is one of the complications faced by patients with β-thalassemia major (β-TM). Histopathological features include abnormal, mineralized and fragmented elastic fibers in skin, eyes and arterial blood vessels (elastorrhexia). The pathogenesis of PXL lesions in β-TM is not yet completely understood. This study was aimed at analyzing a possible implication of α-Klotho in the clinical manifestation of PXL in patients with β-TM (30 with and 78 without PXL). A significant correlation was observed between Klotho, parathyroid hormone (PTH) and serum calcium (Ca)...
December 11, 2017: Hemoglobin
https://www.readbyqxmd.com/read/29201206/combined-treatment-of-diabetic-nephropathy-with-alprostadil-and-calcium-dobesilate
#5
Lili Qin, Wenjun Qin, Jianfei Wang, Lin Lin
This study investigated the effects of alprostadil combined with calcium dobesilate on the treatment of diabetic nephropathy. We recruited 80 patients with diabetic nephropathy, who were randomly divided into experimental (n=40) and control (n=40) groups. Patients received high-quality low-protein diabetic diet intervention and subcutaneous injection of insulin to adjust blood glucose, combined with antihypertensive, antiplatelet drugs, and other comprehensive treatments. The control group received alprostadil and the experimental group received alprostadil combined with calcium dobesilate...
November 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29193813/a-case-report-of-brown-tumor-in-a-patient-with-chronic-renal-failure-and-renal-cell-carcinoma
#6
Yong-Jun Liu, Elizabeth E Frauenhoffer, Eric Walker, Nicole C Williams
We report a case of a 72 year old male with hyperparathyroidism secondary to end stage diabetic renal disease and coexisting bilateral chromophobe renal cell carcinomas. The patient presented with back and groin pain, right pelvic hemorrhage, and multiple lytic bone lesions concerning for metastatic renal cell carcinoma. Fine needle aspiration cytology demonstrated benign appearing osteoclasts and spindled cells. A concurrent core biopsy showed foci of spindled cell proliferation populated by osteoclast-like giant cells with stromal hemorrhage without evidence of metastatic carcinoma...
November 29, 2017: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/29190606/association-between-klotho-gene-polymorphism-and-markers-of-bone-metabolism-in-patients-receiving-maintenance-hemodialysis-in-iran
#7
Aboalfazl Nazarian, Meisam Hasankhani, Monireh Aghajany-Nasab, Ali Monfared
INTRODUCTION: Some genetic variations of Klotho have been reported as a risk factor for calcification and hyperphosphatemia in chronic kidney disease. Klotho polymorphism is also associated with outcome in patients receiving hemodialysis. This study aimed to evaluate the relationship between Klotho single nucleotide polymorphism (SNP) and bone metabolism as an early prognostic measure for chronic kidney disease.   Materials and Methods. Sixty patients receiving hemodialysis and 60 age-matched controls were enrolled in the study of the assessment of 2 types of Klotho polymorphism (G395A and C1818T)...
November 2017: Iranian Journal of Kidney Diseases
https://www.readbyqxmd.com/read/29181825/a-primary-hepatic-gastrinoma-accompanied-by-hyperplasia-of-multi-nodular-brunner-s-glands
#8
Takaomi Hagi, Yohei Hosoda, Izumi Komoto, Shinji Uemoto, Susumu Hijioka, Yoshiro Taki, Kazuhiro Nishiyama, Masayuki Imamura
BACKGROUND: Primary hepatic gastrinoma causing severe ulcerogenic syndrome is extremely rare. Herein, we report a case of primary hepatic gastrinoma accompanied by hyperplasia of multi-nodular Brunner's glands in a patient who instead, preoperatively, was suspected of having multiple duodenal gastrinomas and hepatic metastasis. CASE PRESENTATION: A 57-year-old woman consulted a clinic complaining of melena, intermittent abdominal pain, diarrhea, and vomiting which had persisted for about 3 years...
November 28, 2017: Surgical Case Reports
https://www.readbyqxmd.com/read/29179172/-control-of-bone-remodeling-by-bone-anabolic-drugs
#9
Yasuhiro Takeuchi
Teriparatide is a bone anabolic drug that is only available in practice. It is a N-terminal fragment of parathyroid hormone(PTH). Mode of actions of teriparatide is pharmacological but not physiological as it is administered to patients with osteoporosis. Physicians need to understand the fact that treatment with teriparatide is not just like a hormone replacement but its effects on bone remodeling are pharmacological. Romosozumab, under clinical development as anti-osteoporosis drug, is a monoclonal antibody against sclerostin...
2017: Clinical Calcium
https://www.readbyqxmd.com/read/29178939/autocrine-parathyroid-hormone-like-hormone-promotes-intrahepatic-cholangiocarcinoma-cell-proliferation-via-increased-erk-jnk-atf2-cyclind1-signaling
#10
Jing Tang, Yan Liao, Shuying He, Jie Shi, Liang Peng, Xiaoping Xu, Fang Xie, Na Diao, Jinlan Huang, Qian Xie, Chuang Lin, Xiaoying Luo, Kaili Liao, Juanjuan Ma, Jingyi Li, Daichao Zhou, Zhijun Li, Jun Xu, Chao Zhong, Guozhen Wang, Lan Bai
BACKGROUND AND AIMS: Intrahepatic cholangiocarcinoma (ICC) is an aggressive tumor with a high fatality rate. It was recently found that parathyroid hormone-like hormone (PTHLH) was frequently overexpressed in ICC compared with non-tumor tissue. This study aimed to elucidate the underlying mechanisms of PTHLH in ICC development. METHODS: The CCK-8 assay, colony formation assays, flow cytometry and a xenograft model were used to examine the role of PTHLH in ICC cells proliferation...
November 25, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/29137892/role-of-pyrophosphate-in-vascular-calcification-in-chronic-kidney-disease
#11
Daniel Azpiazu, Sergio Gonzalo, Emilio González-Parra, Jesús Egido, Ricardo Villa-Bellosta
Vascular calcification is a pathology characterized by the deposition of calcium-phosphate in cardiovascular structures, mainly in the form of hydroxyapatite crystals, resulting in ectopic calcification. It is correlated with increased risk of cardiovascular disease and myocardial infarction in diabetic patients and in those with chronic kidney disease (CKD). Vascular smooth muscle cells are sensitive to changes in inorganic phosphate (Pi) levels. They are able to adapt and modify some of their functions and promote changes which trigger calcification...
November 11, 2017: Nefrología: Publicación Oficial de la Sociedad Española Nefrologia
https://www.readbyqxmd.com/read/29134314/surgery-for-primary-hyperparathyroidism-with-normal-non-suppressed-parathyroid-hormone-can-be-both-challenging-and-successful
#12
Lauren E Orr, Travis J McKenzie, Geoffrey B Thompson, David R Farley, Robert A Wermers, Melanie L Lyden
BACKGROUND: Criteria for diagnosing primary hyperparathyroidism (PHPT) include hypercalcemia in the presence of parathyroid hormone (PTH) levels that are either elevated (classic PHPT) or normal but non-suppressed. However, there is no standard definition of what constitutes normal non-suppressed levels, and data are lacking regarding the potential for surgical cure in these patients. METHODS: A retrospective review of patients undergoing parathyroidectomy for sporadic PHPT between 2012 and 2014 was performed...
November 13, 2017: World Journal of Surgery
https://www.readbyqxmd.com/read/29131865/associations-between-ret-tagsnps-and-their-haplotypes-and-susceptibility-clinical-severity-and-thyroid-function-in-patients-with-differentiated-thyroid-cancer
#13
Caiyun He, Jiangjun Ma, Yongle Jiang, Xuan Su, Xiao Zhang, Weichao Chen, Zulu Ye, Tiancheng Deng, Wenze Deng, Ankui Yang
BACKGROUND: It is unclear whether common genetic variants of the RET proto-oncogene contribute to disease susceptibility, clinical severity, and thyroid function in differentiated thyroid cancer (DTC). METHODS: A total of 300 DTC patients and 252 healthy controls were enrolled in this study. Seven RET tagging single nucleotide polymorphisms were genotyped using the KASPar platform. RESULTS: Subgroup analysis showed that concomitant thyroid benign diseases were less likely to occur in DTC subjects with the rs1799939 AG or AG plus AA genotypes (odds ratio (OR) = 1...
2017: PloS One
https://www.readbyqxmd.com/read/29113980/management-of-endocrine-disease-novel-anabolic-treatments-for-osteoporosis
#14
REVIEW
Ernesto Canalis
Skeletal anabolic agents enhance bone formation, which is determined by the number and function of osteoblasts. Signals that influence the differentiation and function of cells of the osteoblast lineage play a role in the mechanism of action of anabolic agents in the skeleton. Wnts induce the differentiation of mesenchymal stem cells toward osteoblasts, and insulin-like growth factor I (IGF-I) enhances the function of mature osteoblasts. The activity of Wnt and IGF-I is controlled by proteins that bind to the growth factor or to its receptors...
February 2018: European Journal of Endocrinology
https://www.readbyqxmd.com/read/29099947/recombinant-human-parathyroid-hormone-effect-on-health-related-quality-of-life-in-adults-with-chronic-hypoparathyroidism
#15
Tamara J Vokes, Michael Mannstadt, Michael A Levine, Bart L Clarke, Peter Lakatos, Kristina Chen, Rebecca Piccolo, Alan Krasner, Dolores M Shoback, John P Bilezikian
Context: Reduced health-related quality of life (HRQoL) is common in patients with hypoparathyroidism on conventional therapy with calcium and active vitamin D supplements. Objective: To examine the effects of recombinant human parathyroid hormone (rhPTH[1-84]) on HRQoL as measured by the 36-Item Short Form Health Survey (SF-36) during the multinational, randomized, placebo-controlled REPLACE study. Patients: 122 adults with chronic hypoparathyroidism...
November 1, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29098662/deregulation-of-the-growth-hormone-insulin-like-growth-factor-1-axis-in-adults-with-cystic-fibrosis
#16
C Pascucci, R V De Biase, D Savi, S Quattrucci, A M Isidori, C Lubrano, L Gnessi, A Lenzi
PURPOSE: Patients with cystic fibrosis (CF) present with signs and symptoms that overlap with those of adult growth hormone deficiency (GHD) syndrome: loss of muscle mass, bone fragility and lower stress tolerance. In literature, the prevalence of GHD in pediatric CF patients is higher than general population, but these studies have been performed on children with growth delay. To our knowledge, there are no studies on adult patients. The aim of this paper is to evaluate GH-IGF1 axis in an adult CF population...
November 2, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/29078380/large-g-protein-%C3%AE-subunit-xl%C3%AE-s-limits-clathrin-mediated-endocytosis-and-regulates-tissue-iron-levels-in-vivo
#17
Qing He, Richard Bouley, Zun Liu, Marc N Wein, Yan Zhu, Jordan M Spatz, Chia-Yu Wang, Paola Divieti Pajevic, Antonius Plagge, Jodie L Babitt, Murat Bastepe
Alterations in the activity/levels of the extralarge G protein α-subunit (XLαs) are implicated in various human disorders, such as perinatal growth retardation. Encoded by GNAS, XLαs is partly identical to the α-subunit of the stimulatory G protein (Gsα), but the cellular actions of XLαs remain poorly defined. Following an initial proteomic screen, we identified sorting nexin-9 (SNX9) and dynamins, key components of clathrin-mediated endocytosis, as binding partners of XLαs. Overexpression of XLαs in HEK293 cells inhibited internalization of transferrin, a process that depends on clathrin-mediated endocytosis, while its ablation by CRISPR/Cas9 in an osteocyte-like cell line (Ocy454) enhanced it...
November 7, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29038066/in-vitro-and-preclinical-assessment-of-an-intranasal-spray-formulation-of-parathyroid-hormone-pth-1-34-for-the-treatment-of-osteoporosis
#18
Allan J Williams, Faron Jordan, Gareth King, Andrew L Lewis, Lisbeth Illum, Tahir Masud, Alan C Perkins, Richard G Pearson
Osteoporosis treatment with PTH 1-34 injections significantly reduces the incidence of bone fracture. Potential further reductions in fracture rate should be observed through nasal spray delivery to address the poor compliance associated with patient dislike of repeated PTH 1-34 subcutaneous injections. In vitro human osteoblast-like Saos-2 cell intracellular cAMP levels were used to define PTH 1-34 nasal spray formulation bioactivity. The chemically synthesised PTH 1-34 had an EC50 of 0.76nM. Absorption enhancers polyethylene glycol (15)-hydroxystearate (Solutol(®) HS15), poloxamer 407, chitosan or sodium hyaluronate did not diminish the bioactivity of PTH 1-34 within an in vitro cell culture model (p >0...
October 14, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28953664/risk-factors-of-hypoparathyroidism-following-total-thyroidectomy-with-central-lymph-node-dissection
#19
Anping Su, Bin Wang, Yanping Gong, Rixiang Gong, Zhihui Li, Jingqiang Zhu
The risk factors of hypoparathyroidism after total thyroidectomy (TT) with central lymph node dissection (CND) have not been completely defined. The aim of the study was to evaluate the risk factors of hypoparathyroidism after the surgery.We retrospectively reviewed our patients who underwent TT and CND (including lateral lymph node dissection) for thyroid carcinoma between January 2013 and June 2016. According to the postoperative serum levels of parathyroid hormone within 6 months, the patients were divided into normal, transient hypoparathyroidism, and permanent hypoparathyroidism groups...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28948826/hormonal-and-bone-parameters-in-pubertal-girls
#20
V Cirmanova, I Zofkova, P Kasalicky, V Lanska, M Bayer, L Starka, R Kanceva
Here we analyzed associations between muscles mass, total bone mineral content (BMC), lumbar spine bone density (BMD L1-L4) and serum or urine hormones in healthy peripubertal girls. Total BMC and areal BMD L1-L4, muscle mass and fat were measured by dual-energy X-ray absorptiometry (DXA). Muscle force (N) was estimated by a dynamometer. Circulating estradiol, follicle-stimulating hormone (FSH), luteinizing hormone (LH), 25-hydroxy vitamin D, parathyroid hormone (PTH), insulin-like growth factor 1 (IGF-1), leptin, osteocalcin, bone isoenzyme of alkaline phosphatase (bALP) and total calcium and phosphorus were quantified as the nocturnal melatonin and serotonin urinary excretion...
September 26, 2017: Physiological Research
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