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Parathyroid hormone

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https://www.readbyqxmd.com/read/29243851/alterations-in-gene-expression-in-vitamin-d-deficiency-down-regulation-of-liver-cyp7a1-and-renal-oat3-in-mice
#1
Holly P Quach, Keumhan Noh, Stacie Y Hoi, Adrie Bruinsma, Geny M M Groothuis, Albert P Li, Edwin C Y Chow, K Sandy Pang
The vitamin D-deficient model, established in C57BL/6 mouse after 8-week feeding of vitamin D-deficient diets in absence or presence of added calcium, was found associated with elevated levels of plasma parathyroid hormone (PTH) and plasma and liver cholesterol, and reduction in cholesterol 7α-hydroxylase (Cyp7a1, rate-limiting enzyme for cholesterol metabolism) and renal Oat3 mRNA/protein expression levels. There was, however, no change in plasma calcium and phosphate levels. Appraisal of the liver revealed up-regulation of mRNA expressions of the small heterodimer partner (Shp) and attenuation of Cyp7a1, which contributed to hypercholesterolemia in vitamin D-deficiency...
December 15, 2017: Biopharmaceutics & Drug Disposition
https://www.readbyqxmd.com/read/29243659/comparative-study-of-the-serum-measurement-of-pth-on-roche-cobas-e411%C3%A2-versus-the-abbott-architect-ci8200%C3%A2
#2
Mohammed Bensalah, Ouardia Bouayadi, Nawal Rahmani, Amina Lyagoubi, Somiya Lamrabat, Mohammed Choukri
Parathormone (PTH) is the main hormone of phosphocalcic homeostasis. It is synthesized and secreted by the parathyroid glands. PTH has become a routine test in the medical biology laboratory. However, its measurement presents analytical difficulties with the various marketed kits. The aim of this work is to present the results of a comparative study between the PTH measurment on Abbott architect ci8200 and on Roche's Cobas e411 automaton. It is a prospective study carried out for 252 hospitalized patients in the various departments of the University Hospital Center Mohammed VI of Oujda...
December 15, 2017: Annales de Biologie Clinique
https://www.readbyqxmd.com/read/29243442/-regression-analysis-of-serum-bone-metabolic-markers-and-traditional-chinese-medicine-syndromes-in-patients-with-ckd-mbd
#3
Hai-Ming Yang, Xian-Jie Meng, Wei Wu, Ying-Lu Liu, Xiao-Juan Zhai
To analyze the interdependent relationship between serum bone metabolic markers and traditional Chinese medicine (TCM) syndromes in patients with chronic kidney disease (stages 3 and 4)-related mineral and bone disorder (CKD-MBD), in order to provide the objective basis for exploring the rules of TCM syndrome differentiation in patients with CKD-MBD. The retrospective survey was conducted to collect 105 cases with CKD (stages 3 and 4)-MBD. General clinical indexes, frequency of TCM syndromes and distribution of TCM syndrome type were investigated...
October 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/29241464/-diagnostic-approach-and-treatment-of-primary-hyperparathyroidism
#4
W Y van der Plas, M E Noltes, A W M A Schaeffers, A H Brouwers, A N A van der Horst-Schrivers, S Kruijff
- Primary hyperparathyroidism (PHPT) is characterised by elevated serum calcium levels due to elevated levels, or insufficient suppression, of parathyroid hormone (PTH).- The incidence of PHPT has increased in recent years. This is mainly the result of more frequently performed routine measurements of serum calcium, e.g. as part of postmenopausal screening.- The classically described features of PHPT - bones and stones - are not always observed and most patients are asymptomatic.- Diagnosis of PHPT is only established by biochemical testing, not by imaging...
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/29241341/abaloparatide-review-of-a-next-generation-parathyroid-hormone-agonist
#5
Eric G Boyce, Yvonne Mai, Christopher Pham
OBJECTIVE: To review the efficacy, safety, and economics of abaloparatide in the treatment of postmenopausal osteoporosis. DATA SOURCES: PubMed (1966 to October 2017), Clinicaltrials.gov (October 2017), and Scopus (1970 to October 2017) were searched using abaloparatide, Tymlos, BA058, PTHrP 1-34 analog, and parathyroid hormone-related peptide 1-34 analog. STUDY SELECTION AND DATA EXTRACTION: Human studies published in peer-reviewed publications in English were the primary sources for efficacy, safety, and economic data...
December 1, 2017: Annals of Pharmacotherapy
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
#6
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
#7
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/29239351/association-of-serum-uric-acid-levels-with-osteoporosis-and-bone-turnover-markers-in-a-chinese-population
#8
Dan-Dan Yan, Jie Wang, Xu-Hong Hou, Yu-Qian Bao, Zhen-Lin Zhang, Cheng Hu, Wei-Ping Jia
Recent evidence shows that uric acid is protective against some neurological diseases, but can be detrimental in many metabolic and cardiovascular disorders. In this study, we examined the association between serum uric acid levels and bone metabolism in Chinese males and postmenopausal females. A total of 943 males and 4256 postmenopausal females were recruited in Shanghai. The levels of serum uric acid and bone turnover markers (BTMs) were detected along with other biochemical traits. In addition, the fat distribution was calculated through MRI and image analysis software, and bone mineral density (BMD) was determined using dual-energy X-ray absorptiometry...
December 14, 2017: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/29238762/etelcalcetide-injectable-calcimimetic-for-the-treatment-of-secondary-hyperparathyroidism-in-hemodialysis-dependent-patients
#9
P A Ureña Torres, J Bover, M Cohen-Solal
Chronic kidney disease is associated with mineral and bone disorders that are now considered as a syndrome. One of the major complications of this syndrome is secondary hyperparathyroidism (SHPT). SHPT increases bone turnover and the risk of fracture. SHPT is also associated with cardiovascular calcification and high mortality risk. The classical medical therapies of SHPT lack long-term efficacy and have undesirable effects on serum calcium and phosphate levels. Surgical parathyroidectomy is a radical therapeutic solution potentially exposing patients to a permanent state of hypoparathyroidism among other complications...
September 2017: Drugs of Today
https://www.readbyqxmd.com/read/29238578/bone-eating-kidney-disease
#10
Abhilash Koratala, Muhannad Leghrouz, Amir Kazory
In the current era of early detection of chronic kidney disease and efficient therapeutic options for management of its complications, skeletal manifestations of renal hyperparathyroidism are increasingly rare. A 31-year-old female patient presented for evaluation of severe pain in the left forearm, right hand, right knee, right hip, and lower back following a fall sustained 3 days prior to presentation. She had a history of end-stage renal disease and received maintenance hemodialysis. Review of the medical records revealed that she had poor compliance with her diet, medications, and dialysis treatments...
2017: SAGE Open Medical Case Reports
https://www.readbyqxmd.com/read/29238429/the-effect-of-ongoing-vitamin-d-and-low-fat-milk-intake-on-bone-metabolism-in-female-high-school-endurance-runners
#11
Aoi Ikedo, Takuma Arimitsu, Toshiyuki Kurihara, Kumiko Ebi, Satoshi Fujita
Background: Vitamin D and calcium are essential nutrients for bone health. In addition, vitamin D suppresses inflammatory cytokines and increases bone resorption. Therefore, improvements in bone health by calcium and vitamin D supplementation have the potential to not only improve calcium metabolism but also suppress inflammation associated with exercise training. The purpose of this study was to determine whether ongoing vitamin D supplementation and low-fat milk intake by female high-school endurance runners would improve bone metabolism by suppressing inflammatory cytokines and the parathyroid hormone (PTH)...
January 2018: Journal of Clinical Medicine Research
https://www.readbyqxmd.com/read/29236646/evaluation-of-bone-mineral-density-bmd-and-indicators-of-bone-turnover-in-patients-with-hemophilia
#12
Mehmet Dagli, Ali Kutlucan, Sedat Abusoglu, Abdulkadir Basturk, Mehmet Sozen, Leyla Kutlucan, Ali Unlu, Farise Yilmaz
A decrease in bone mass is observed in hemophilic patients. The aim of this study was to evaluate bone mineral density (BMD), parathyroid hormone (PTH), 25-hydroxy vitamin D (vitamin D), and a bone formation and resorption marker, procollagen type I N-terminal propeptide (PINP) and urinary N-terminal telopeptide (uNTX) respectively, in hemophilic patients and healthy controls. Laboratory parameters related to the pathogenesis of bone loss such as neutrophil-lymphocyte ratio (NLR) and platelet-lymphocyte ratio (PLR) were also evaluated...
December 13, 2017: Bosnian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/29235733/intraoperative-parathyroid-aspiration-and-parathyroid-hormone-assay-during-parathyroidectomy-for-primary-hyperparathyroidism
#13
Miki Paker, Shani Fisher, Salim Mazzawi, Raul Kolodner, Dror Ashkenazi
BACKGROUND: Direct aspiration from suspected pathological tissue and rapid parathyroid hormone analysis may offer a reliable, cost effective alternative to currently used "gold standard" tests. OBJECTIVES: To validate the accuracy of intraoperative measurements of parathyroid hormone levels in parathyroid adenomas. METHODS: A prospective study included 22 patients diagnosed with primary hyperparathyroidism who underwent parathyroidectomy due to an adenoma or hyperplasia...
December 2017: Israel Medical Association Journal: IMAJ
https://www.readbyqxmd.com/read/29235126/relationships-of-serum-25-hydroxyvitamin-d-ionized-calcium-and-parathyroid-hormone-after-obesity-surgery
#14
Stephen Hewitt, Erlend Tuseth Aasheim, Torgeir Thorson Søvik, Jørgen Jahnsen, Jon Kristinsson, Erik Fink Eriksen, Tom Mala
OBJECTIVE: The high prevalence of secondary hyperparathyroidism (SHPT) after obesity surgery is a concern for long-term bone health. Limited knowledge exists about optimal vitamin D and suppression of parathyroid hormone (PTH) after these procedures. The aim of this study was to investigate the prevalence of SHPT and its relation to vitamin D status. DESIGN: A cross-sectional study at Oslo University Hospital, Norway. PATIENTS: 502 consecutive patients, age 22-64 years, attending 2-year follow-up after Roux-en-Y gastric bypass...
December 13, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/29234569/a-case-of-localized-pulmonary-calcification-presenting-as-a-persistent-mass-lesion-in-an-immunosuppressed-patient-following-treatment-of-a-pseudomonas-pneumonia
#15
Matthew J Cecchini, Dominic L Shepherd, Jessica G Shepherd
We report a case of a persistent right upper lobe opacity following treatment for a Pseudomonas infection in an immunosuppressed patient with a recent renal transplantation. The patient underwent a surgical lung biopsy for definitive diagnosis of the mass. The lesion was composed of extensive calcifications deposited throughout the lung with associated fibrosis. The patient had a history of a remote parathyroidectomy for hyperparathyroidism; however, the parathyroid hormone (PTH) and the calcium levels were still mildly elevated...
October 11, 2017: Curēus
https://www.readbyqxmd.com/read/29229501/proceedings-of-the-2017-santa-fe-bone-symposium-insights-and-emerging-concepts-in-the-management-of-osteoporosis
#16
REVIEW
E Michael Lewiecki, John P Bilezikian, John J Carey, Richard M Dell, Catherine M Gordon, Steven T Harris, Michael R McClung, Paul D Miller, Michael Rosenblatt
The 18th Annual Santa Fe Bone Symposium was held on August 4-5, 2017, in Santa Fe, New Mexico, USA. The symposium convenes health-care providers and clinical researchers to present and discuss clinical applications of recent advances in research of skeletal diseases. The program includes lectures, oral presentations by endocrinology fellows, case-based panel discussions, and breakout sessions on topics of interest, with emphasis on participation and interaction of all participants. Topics included the evaluation and treatment of adult survivors with pediatric bone diseases, risk assessment and management of atypical femur fractures, nonpharmacologic strategies in the care of osteoporosis, and skeletal effects of parathyroid hormone with opportunities for therapeutic intervention...
November 20, 2017: Journal of Clinical Densitometry
https://www.readbyqxmd.com/read/29227640/raman-spectroscopy-applied-to-parathyroid-tissues-a-new-diagnostic-tool-to-discriminate-normal-tissue-from-adenoma
#17
Andrea Palermo, Marco Fosca, Gaia Tabacco, Federico Marini, Valerio Graziani, Maria Carla Santarsia, Filippo Longo, Angelo Lauria, Roberto Cesareo, Isabella Giovannoni, Chiara Taffon, Massimiliano Rocchia, Silvia Manfrini, Pierfilippo Crucitti, Paolo Pozzilli, Anna Crescenzi, Julietta V Rau
Primary hyperparathyroidism is an endocrine disorder characterized by autonomous production of parathyroid hormone. Patients with the symptomatic disease should be referred for parathyroidectomy. However, the distinction between the pathological condition and the benign one is very challenging in the surgical setting; therefore, accurate recognition is important to ensure success during minimally invasive surgery. At present, all intraoperative techniques significantly increase surgical time and, consequently, cost...
December 11, 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
#18
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/29225815/hypercalcaemia-preceding-diagnosis-of-pneumocystis-jirovecii-pneumonia-in-renal-transplant-recipients
#19
Jonathan Ling, Tara Anderson, Sanchia Warren, Geoffrey Kirkland, Matthew Jose, Richard Yu, Steven Yew, Samantha Mcfadyen, Alison Graver, William Johnson, Lisa Jeffs
Background: The overall incidence of Pneumocystis jirovecii pneumonia (PJP) in solid organ transplant recipients is 5-15%. A timely diagnosis of PJP is difficult and relies on imaging and detection of the organism. Methods: We present a case series of four patients displaying hypercalcaemia with an eventual diagnosis of PJP and document the management of the outbreak with a multidisciplinary team approach. We discuss the underlying pathophysiology and previous reports of hypercalcaemia preceding a diagnosis of PJP...
December 2017: Clinical Kidney Journal
https://www.readbyqxmd.com/read/29225207/parathyroid-carcinoma-occurred-in-two-glands-in-multiple-endocrine-neoplasia-1-a-report-on-a-rare-case
#20
Yoko Omi, Kiyomi Horiuchi, Kento Haniu, Momoko Tokura, Erin Nagai, Osamu Isozaki, Yoji Nagashima, Takahiro Okamoto
Primary hyperparathyroidism is the most common hormonal manifestation associated with multiple endocrine neoplasia 1 (MEN1). It is generally caused by parathyroid hyperplasia, and parathyroid carcinoma is rare. Here, we report a case of MEN1 with parathyroid carcinoma in two parathyroid glands causing primary hyperparathyroidism. A 40-year-old man with primary hyperparathyroidism due to MEN1 underwent a total parathyroidectomy. His corrected calcium and intact PTH (i-PTH) serum levels were 10.8 mg/dL and 203 pg/mL, respectively...
December 8, 2017: Endocrine Journal
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