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https://www.readbyqxmd.com/read/29684716/predicted-mirna-mrna-mediated-posttranscriptional-control-associated-with-differences-in-cervical-and-thoracic-thymus-function
#1
Amanda F Assis, Jie Li, Paula B Donate, Janaína A Dernowsek, Nancy R Manley, Geraldo A Passos
A secondary cervical thymus (CT) is present in the neck region in about 50% of human and mice. CT in mice is an independent and functional organ, which can be colonized by T lymphocyte progenitors and generate thymocytes that are selected by the T cell receptor repertoire following the positive and negative selection. However, CT and the main thoracic thymus (TT) have been shown in mice to have significant functional differences. In this study, we use transcriptional profiling to compare mRNA or miRNAs expression patterns in murine CT and TT...
April 20, 2018: Molecular Immunology
https://www.readbyqxmd.com/read/29680989/challenging-pre-surgical-localization-of-hyperfunctioning-parathyroid-glands-in-primary-hyperparathyroidism-the-added-value-of-18-f-fluorocholine-pet-ct
#2
Serena Grimaldi, Jacques Young, Peter Kamenicky, Dana Hartl, Marie Terroir, Sophie Leboulleux, Amandine Berdelou, Julien Hadoux, Segolene Hescot, Hervé Remy, Eric Baudin, Martin Schlumberger, Désirée Deandreis
PURPOSE: To evaluate the added value of 18 F-Fluorocholine (18 F-FCH) PET/CT in presurgical imaging of patients with primary hyperparathyroidism (HPT) and challenging localization of the hyper-functioning parathyroid glands. METHODS: We included 27 consecutive patients with primary HPT (19 F; median age: 58 years), with either (i) non-conclusive pre-surgical localization with 99 mTc-sestaMIBI scintigraphy and neck ultrasonography (US), (ii) recurrence of previously operated HPT, or (iii) familiar HPT with a suspicion of multiple gland disease...
April 22, 2018: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29666107/tc-99m-sestamibi-scintigraphy-and-primary-hyperparathyroidism-uptake-beyond-parathyroid-glands
#3
Daniela Dias, Joana Simões-Pereira, Valeriano Leite
No abstract text is available yet for this article.
April 17, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29663329/prophylactic-thyroidectomy-in-children-with-multiple-endocrine-neoplasia-type-2
#4
F P Prete, T Abdel-Aziz, C Morkane, C Brain, T R Kurzawinski
BACKGROUND: In patients with multiple endocrine neoplasia type 2 (MEN2) syndrome, genetic testing offers early diagnosis, stratifies the risk of developing medullary thyroid cancer (MTC) and informs the timing of thyroidectomy. The efficacy of treatment, which depends on timely and safe surgery, is not well established. METHODS: This was a retrospective review of diagnostic and clinicopathological outcomes of prophylactic thyroidectomy in children with MEN2 between 1995 and 2013 in the UK...
April 17, 2018: British Journal of Surgery
https://www.readbyqxmd.com/read/29659895/identification-of-differential-transcriptional-patterns-in-primary-and-secondary-hyperparathyroidism
#5
Samira M Sadowski, Marc Pusztaszeri, Marie-Claude Brulhart-Meynet, Volodymyr Petrenko, Claudio De Vito, Jonathan Sobel, Céline Delucinge-Vivier, Electron Kebebew, Romano Regazzi, Jacques Philippe, Frédéric Triponez, Charna Dibner
Context: Hyperparathyroidism is associated with hypercalcemia and the excess of parathyroid hormone secretion. However, the alterations in molecular pattern of functional genes during parathyroid tumorigenesis have not been unraveled. We aimed at establishing transcriptional patterns of normal and pathological parathyroid glands (PG) in sporadic primary and secondary hyperparathyroidism (HPT1, 2). Objective: To evaluate dynamic alterations in molecular patterns as a function of the type of PG pathology, a comparative transcript analysis was conducted in subgroups of healthy samples, sporadic HPT1 adenoma and hyperplasia, and HPT2...
April 5, 2018: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29658811/parathyroid-autotransplantation-during-thyroid-surgery-where-we-are-a-systematic-review-on-indications-and-results
#6
Olga Iorio, Vincenzo Petrozza, Antonietta De Gori, Marco Bononi, Natale Porta, Giorgio De Toma, Giuseppe Cavallaro
INTRODUCTION: Hypoparathyroidism still represents an important concern in thyroid surgery. Careful dissection with identification and preservation of parathyroid glands in situ remains the best way to maintain gland vitality and avoid post-operative failure. Nevertheless, parathyroid glands are still inadvertently removed in up to 11% of cases. Parathyroid autotransplantation may represent the only way to restore parathyroid gland functionality in case of inadvertent removal or devascularization during thyroid surgery...
April 16, 2018: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
https://www.readbyqxmd.com/read/29658374/hypercalcemic-crisis-in-third-trimenon-evaluating-the-optimal-treatment-strategy
#7
Julie Refardt, Patricia Farina, Irene Hoesli, Christian Meier
Hypercalcemia due to primary hyperparathyroidism during pregnancy is a rare condition and associated with increased morbidity and mortality for the mother and the unborn child. Whereas parathyroidectomy is favored during the second trimester, no clear recommendations exist for its management during the third trimenon. We here report the case of a 26-year-old woman in the 29th week of her first pregnancy, who was admitted to our clinic with hypertension, intra-uterine growth retardation and polyhydramnios. Severe hypercalcemia due to primary hyperparathyroidism was diagnosed (total calcium 3...
April 16, 2018: Gynecological Endocrinology
https://www.readbyqxmd.com/read/29657879/primary-hyperparathyroidism-and-gougerot-disease
#8
Toumader Bouziane, Nadia Belmahi, Hanan El Ouahabi
Primary hyperparathyroidism (PHPT) is a common endocrine disorder caused by the overactivation of the parathyroid glands due to the autonomous production of the parathyroid hormone (PTH). The resultant hypercalcemia leads to a myriad of symptoms. Here we report the case of a 54-year-old female with a previous diagnosis of Gougerot disease, in whom clinical (diffuse bone pain, asthenia polydipsia, and polyuria) and laboratory features (calcium level, 3.1 mmol/L; phosphate level, 0.55 mmol/L; alkaline phosphatase level, 70 U/L; and intact PTH level, 1028...
March 2018: European Journal of Rheumatology
https://www.readbyqxmd.com/read/29644069/clinical-course-after-parathyroidectomy-in-adults-with-end-stage-renal-disease-on-maintenance-dialysis
#9
Christopher Thiam Seong Lim, Thevandra Kalaiselvam, Normayah Kitan, Bak Leong Goh
Background: Parathyroidectomy (PTX) is done in cases of secondary hyperparathyroidism from chronic kidney disease to improve renal osteodystrophy. Despite this widespread practice, clinical outcomes regarding the benefits of this procedure are still lacking. Most studies in the literature have opted to report the laboratory outcome instead. Our study aimed to evaluate the postoperative clinical course for patients who had undergone total PTX without autoimplantation. Methods and results: All patients who underwent PTX between January 2010 and February 2014 in a tertiary referral center were included in this study and followed up for 12 months...
April 2018: Clinical Kidney Journal
https://www.readbyqxmd.com/read/29626276/immunohistochemistry-in-diagnostic-parathyroid-pathology
#10
REVIEW
Lori A Erickson, Ozgur Mete
Pathologists are usually readily able to diagnose parathyroid tissues and diseases, particularly when they have knowledge of the clinical information, laboratory findings, and radiographic imaging studies. However, the identification of parathyroid tissue or lesions can be difficult in small biopsies, ectopic locations, supranumerary glands, and in some oxyphil/oncocytic lesions. Widely available immunohistochemical studies such as chromogranin-A, synaptophysin, keratin, parathyroid hormone, thyroglobulin, and thyroid transcription factor-1 can help in difficult cases...
April 7, 2018: Endocrine Pathology
https://www.readbyqxmd.com/read/29618612/interrelated-role-of-klotho-and-calcium-sensing-receptor-in-parathyroid-hormone-synthesis-and-parathyroid-hyperplasia
#11
Yi Fan, Weiqing Liu, Ruiye Bi, Michael J Densmore, Tadatoshi Sato, Michael Mannstadt, Quan Yuan, Xuedong Zhou, Hannes Olauson, Tobias E Larsson, Hakan R Toka, Martin R Pollak, Edward M Brown, Beate Lanske
The pathogenesis of parathyroid gland hyperplasia is poorly understood, and a better understanding is essential if there is to be improvement over the current strategies for prevention and treatment of secondary hyperparathyroidism. Here we investigate the specific role of Klotho expressed in the parathyroid glands (PTGs) in mediating parathyroid hormone (PTH) and serum calcium homeostasis, as well as the potential interaction between calcium-sensing receptor (CaSR) and Klotho. We generated mouse strains with PTG-specific deletion of Klotho and CaSR and dual deletion of both genes...
April 4, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29617866/serotonin-induces-parathyroid-hormone-related-protein-in-goat-mammary-gland
#12
W J Zang, H Li, Z F Zhang, R QuZhen, Y Z CuoMu, D K Zhang, J Luo, J J Loor, H L Zheng
During lactation, large amounts of calcium are exported from the mammary gland into milk to ensure skeletal growth of the offspring. Recent studies revealed that serotonin (5-HT) is essential to stimulate skeletal calcium resorption for milk synthesis. Our objective was to explore the correlation between circulating 5-HT and serum calcium and parathyroid hormone-related protein (PTHrP) concentrations around parturition in dairy goats. We also investigated the effect of 5-HT on PTHrP expression in cultured primary goat mammary epithelial cells (GMEC)...
April 3, 2018: Journal of Animal Science
https://www.readbyqxmd.com/read/29603039/could-use-of-selective-serotonin-reuptake-inhibitors-during-lactation-cause-persistent-effects-on-maternal-bone
#13
REVIEW
Samantha R Weaver, Laura L Hernandez
The lactating mammary gland elegantly coordinates maternal homeostasis to provide calcium for milk. During lactation, the monoamine serotonin regulates the synthesis and release of various mammary gland-derived factors, such as parathyroid hormone-related protein (PTHrP), to stimulate bone resorption. Recent evidence suggests that bone mineral lost during prolonged lactation is not fully recovered following weaning, possibly putting women at increased risk of fracture or osteoporosis. Selective Serotonin Reuptake Inhibitor (SSRI) antidepressants have also been associated with reduced bone mineral density and increased fracture risk...
March 30, 2018: Journal of Mammary Gland Biology and Neoplasia
https://www.readbyqxmd.com/read/29595868/iatrogenic-hypoparathyroidism-after-surgery-for-retrosternal-goitre-a-single-centre-retrospective-analysis
#14
G Damiano, G Cocchiara, V D Palumbo, F Fatica, F Caternicchia, A I Lo Monte, M Cajozzo
AIM: The aim of this study is to assess, retrospectively, the incidence of secondary hypoparathyroidism after total thyroidectomy in patients with retrosternal goitre. MATERIAL AND METHODS: From January 2009 to September 2015, 622 patients who undergone total thyroidectomy for goitre, were retrospectively observed. The patients were divided into two group: Group A, including 58 patients with retrosternal goitre and Group B, including 562 patients with in situ goitre...
March 2018: La Clinica Terapeutica
https://www.readbyqxmd.com/read/29589297/clinical-impact-of-p27-kip1-and-casr-expression-on-primary-hyperparathyroidism
#15
Gozde Sengul Aycicek, Berna Imge Aydogan, Mustafa Sahin, Cevriye Cansız Ersoz, Serpil Dizbay Sak, Nilgun Baskal
We aimed to investigate the expressions of p27 kinase inhibitory protein 1 (p27Kip1 ) and calcium sensing receptor (CaSR) in adenomas and normal parathyroid tissue and to evaluate the relationship of these molecules with clinical and biochemical parameters in primary hyperparathyroidism (PHPT). Fifty-one patients with histopathologically confirmed parathyroid adenomas and 20 patients with normal parathyroid glands (which were removed incidentally during thyroid resection) were included. Immunohistochemical stainings of CaSR and p27Kip1 were performed in surgical specimens...
March 27, 2018: Endocrine Pathology
https://www.readbyqxmd.com/read/29579336/risk-profile-analysis-and-complications-after-surgery-for-autoimmune-thyroid-disease
#16
O Thomusch, C Sekulla, F Billmann, G Seifert, H Dralle, K Lorenz
BACKGROUND: Surgical approaches to autoimmune thyroid disease are currently hampered by concerns over postoperative complications. Risk profiles and incidences of postoperative complications have not been investigated systematically, and studies with sufficient power to show valid data have not been performed. METHODS: A prospective multicentre European study was conducted between July 2010 and December 2012. Questionnaires were used to collect data prospectively on patients who had surgery for autoimmune thyroid disease and the findings were compared with those of patients undergoing surgery for multinodular goitre...
March 26, 2018: British Journal of Surgery
https://www.readbyqxmd.com/read/29573598/clinical-value-of-11c-methionine-positron-emission-tomography-in-persistent-primary-hyperparathyroidism-a-case-report-with-a-mediastinal-parathyroid-adenoma
#17
M L Møller, L Rejnmark, A K Arveschoug, A Højsgaard, L Rolighed
INTRODUCTION: Primary hyperparathyroidism (PHPT) is a common endocrine disorder caused by pathologic growth of one or more of the parathyroid glands. Parathyroidectomies (PTX) in patients with PHPT are procedures with low morbidity, few complications, and a high cure rate. However, the parathyroid glands may be found at various anatomical locations and occasionally they are intrathoracic. CASE PRESENTATION: We present a 57-year-old patient with PHPT. Before the first and second operation, the preoperative imaging indicated pathologic parathyroid tissue in the neck...
March 15, 2018: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29554410/bilateral-pyriform-sinus-parathyroid-adenomas
#18
Thomas Muelleman, Sreeya Yalamanchali, Yelizaveta Shnayder
Parathyroid glands undergo a variable descent during embryologic development and can be found anywhere in the neck from the level of the mandible to the mediastinum. To the best of our knowledge, we present the first report of a patient who was found to have bilateral parathyroid adenomas in her pyriform sinuses. A middle-aged woman with renal failure and secondary hyperparathyroidism presented with dysphagia and was found to have bilateral pyriform sinus masses on endoscopy. We performed direct laryngoscopy and surgical excision of these masses, and they were found to be parathyroid adenomas...
March 2018: Ear, Nose, & Throat Journal
https://www.readbyqxmd.com/read/29538025/false-positive-results-in-18f-fluorocholine-pet-ct-for-a-thymoma-in-workup-of-a-hereditary-primary-hyperparathyroidism
#19
Léopoldine Bricaire, Capucine Richard, Mathieu Gauthé, Béatrix Cochand-Priollet, Sébastien Gaujoux
We present the case of a severe familial primary hyperparathyroidism related to a germline deletion in the HRPT2 (CDC73) gene. Morphological explorations revealed 2 potential hyperfunctioning parathyroid glands: a left cervical lesion on the neck ultrasound, and an ectopic mediastinal lesion on the parathyroid scintigraphy using Tc-methoxyisobutylisonitrile and on F-fluorocholine PET/CT. Surgery removal and histopathological examination determined that the mediastinal mass corresponded to a thymoma and the cervical lesion to a parathyroid adenoma...
March 13, 2018: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/29536462/-hormone-producing-thyroid-carcinoma-in-a-female-10-year-old-australian-cattle-dog
#20
Karin Gasser
A 10-year-old female Australian Cattle Dog was referred for investigation of a mediastinal mass. During clinical examination, a mandarin- sized mass was detected ventrally of the trachea. According to computed tomographic (CT) findings and cytology of a fine-needle aspirate, thyroid neoplasia was suspected. The assumed tumour affected the left thyroid gland and was staged as stadium II because of enlargement of the ipsilateral cervical and retropharyngeal lymph nodes. The left thyroid, including the parathyroid gland, was removed surgically with a guarded prognosis...
February 2018: Tierärztliche Praxis. Ausgabe K, Kleintiere/Heimtiere
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