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https://www.readbyqxmd.com/read/28927140/itraq-coupled-2d-lc-ms-ms-analysis-of-cxcr7-transfected-papillary-thyroid-carcinoma-cells-a-new-insight-into-cxcr7-regulation-of-papillary-thyroid-carcinoma-progression-and-identification-of-potential-biomarkers
#1
Hengwei Zhang, Lei Yang, Zhangyi Liu, Chenxi Liu, Xuyong Teng, Lei Zhang, Bo Yin, Zhen Liu
Previous studies have demonstrated that C-X-C chemokine receptor type 7 (CXCR7) regulates papillary thyroid carcinoma (PTC) growth and metastasis; however, the molecular mechanisms underlying this regulation remain unclear. In the present study, the protein expression profiles of the PTC cell line GLAG-66 and GLAG-66 cells stably transfected with CXCR7 cDNA were analyzed and compared using isobaric tag for relative and absolute quantification-coupled two-dimensional liquid chromatography-tandem mass spectrometry...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28837607/a-validated-lc-ms-ms-method-for-cellular-thyroid-hormone-metabolism-uptake-and-turnover-of-mono-iodinated-thyroid-hormone-metabolites-by-pccl3-thyrocytes
#2
Keith H Richards, Nancy Schanze, Ray Monk, Eddy Rijntjes, Daniel Rathmann, Josef Köhrle
Tyrosine and phenolic ring de-iodination of thyroid hormones (TH) is crucial for regulating their physiological activity. Furthermore, reactions such as de-carboxylation to thyronamines (TAM) and de-amination to thyroacetic acids (TAc) produce TH metabolites (THM) with distinct biological properties. This needs to be considered when studying effects of TH and THM. The accurate and precise quantitative analysis of TH and THM in cell culture supernatants and cell lysates are key procedures required for studying the in vitro metabolism of TH...
2017: PloS One
https://www.readbyqxmd.com/read/28835403/alemtuzumab-care-ms-ii-5-year-follow-up-efficacy-and-safety-findings
#3
Alasdair J Coles, Jeffrey A Cohen, Edward J Fox, Gavin Giovannoni, Hans-Peter Hartung, Eva Havrdova, Sven Schippling, Krzysztof W Selmaj, Anthony Traboulsee, D Alastair S Compston, David H Margolin, Karthinathan Thangavelu, Madalina C Chirieac, Darlene Jody, Panos Xenopoulos, Richard J Hogan, Michael A Panzara, Douglas L Arnold
OBJECTIVE: To evaluate 5-year efficacy and safety of alemtuzumab in patients with active relapsing-remitting multiple sclerosis and inadequate response to prior therapy. METHODS: In the 2-year Comparison of Alemtuzumab and Rebif Efficacy in Multiple Sclerosis (CARE-MS) II study (NCT00548405), alemtuzumab-treated patients received 2 courses (baseline and 12 months later). Patients could enter an extension (NCT00930553), with as-needed alemtuzumab retreatment for relapse or MRI activity...
September 12, 2017: Neurology
https://www.readbyqxmd.com/read/28835401/alemtuzumab-care-ms-i-5-year-follow-up-durable-efficacy-in-the-absence-of-continuous-ms-therapy
#4
RANDOMIZED CONTROLLED TRIAL
Eva Havrdova, Douglas L Arnold, Jeffrey A Cohen, Hans-Peter Hartung, Edward J Fox, Gavin Giovannoni, Sven Schippling, Krzysztof W Selmaj, Anthony Traboulsee, D Alastair S Compston, David H Margolin, Karthinathan Thangavelu, Claudio E Rodriguez, Darlene Jody, Richard J Hogan, Panos Xenopoulos, Michael A Panzara, Alasdair J Coles
OBJECTIVE: To evaluate 5-year efficacy and safety of alemtuzumab in treatment-naive patients with active relapsing-remitting MS (RRMS) (CARE-MS I; NCT00530348). METHODS: Alemtuzumab-treated patients received treatment courses at baseline and 12 months later; after the core study, they could enter an extension (NCT00930553) with as-needed alemtuzumab retreatment for relapse or MRI activity. Assessments included annualized relapse rate (ARR), 6-month confirmed disability worsening (CDW; ≥1-point Expanded Disability Status Scale [EDSS] score increase [≥1...
September 12, 2017: Neurology
https://www.readbyqxmd.com/read/28776686/contralateral-r1-and-r2-components-of-the-laryngeal-adductor-reflex-in-humans-under-general-anesthesia
#5
Catherine F Sinclair, Maria J Téllez, Oscar R Tapia, Sedat Ulkatan
OBJECTIVES: To demonstrate that under total intravenous general anesthesia (TIVA), the contralateral R1 (cRI) and contralateral R2 (cR2) components of the laryngeal adductor reflex (LAR) can be reliably elicited; to determine effects of topical anesthesia and inhalational anesthesia on the LAR; and to discuss how this technique may be utilized to continuously monitor the vagus nerve reflex arc. STUDY DESIGN: Case series. METHODS: Vocal fold mucosa was electrically stimulated via endotracheal tube surface-based electrodes to elicit a LAR...
August 4, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28761351/alemtuzumab-a-review-of-efficacy-and-risks-in-the-treatment-of-relapsing-remitting-multiple-sclerosis
#6
REVIEW
Cristina Guarnera, Placido Bramanti, Emanuela Mazzon
Alemtuzumab is a selective humanized monoclonal antibody directed against the CD52 antigen, and has been found to be a powerful treatment for relapsing remitting multiple sclerosis. Alemtuzumab demonstrated high efficacy in several clinical studies. The risk of relapse and sustained accumulation of disability showed significant reduction in the Phase II CAMMS223 and the Phase III clinical trials CARE MS I and CARE MS II. The data presented at the 32nd Congress of the European Committee for Treatment and Research in Multiple Sclerosis confirmed these results...
2017: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/28755525/a-distinct-serum-metabolic-signature-of-distant-metastatic-papillary-thyroid-carcinoma
#7
Chen-Tian Shen, Yinan Zhang, Yu-Min Liu, Shan Yin, Xin-Yun Zhang, Wei-Jun Wei, Zhen-Kui Sun, Hong-Jun Song, Zhong-Ling Qiu, Cong-Rong Wang, Quan-Yong Luo
BACKGROUND: Although the incidence rate for thyroid cancer seems to have begun stabilizing in recent years, an increased rate of advanced stage of this disease has been reported. Additionally, distant metastasis is one of the most important prognostic factors of patients with papillary thyroid carcinoma (PTC). Unfortunately, the underlying mechanisms of distant metastasis as well as cell status like metabolism changes in distant metastatic tumors have not been clearly elucidated. OBJECTIVE: To identify serum metabolic signature of distant metastatic PTC...
July 29, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28754352/3-iodothyronamine-reduces-insulin-secretion-in%C3%A2-vitro-via-a-mitochondrial-mechanism
#8
Ina Lehmphul, Carolin S Hoefig, Josef Köhrle
PURPOSE: 3-iodothyronamine (3-T1AM), a decarboxylated and deiodinated thyroid hormone metabolite, leads at pharmacological doses to hypoinsulinemia, hyperglucagonemia and hyperglycemia in vivo. As the pancreatic Langerhans islets express thyroid hormone transmembrane transporters (THTT), we tested the hypothesis that not only plasma membrane-mediated 3-T1AM binding to and activation of G-protein coupled receptors, but also 3-T1AM metabolite(s) generated by 3-T1AM uptake and metabolism might decrease glucose-stimulated insulin secretion (GSIS)...
July 25, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28721111/visual-consequences-of-medications-for-multiple-sclerosis-the-good-the-bad-the-ugly-and-the-unknown
#9
REVIEW
Heather E Moss
Multiple sclerosis (MS) is associated with vision changes both due to MS effects on visual pathways and due to medication effects on the visual pathways. Distinguishing the causes of vision change are critical to appropriate diagnosis and management. The incidence, presentation, and treatment of fingolimod-associated macular edema, alemtuzumab-associated thyroid orbitopathy, and progressive multifocal leukoencephalopathy in MS patients are reviewed. Evidence for beneficial effects of acute, chronic, and symptomatic MS medications on vision is presented...
2017: Eye and Brain
https://www.readbyqxmd.com/read/28713236/modulation-of-calcitonin-parathyroid-hormone-and-thyroid-hormone-secretion-by-electrical-stimulation-of-sympathetic-and-parasympathetic-nerves-in-anesthetized-rats
#10
Harumi Hotta, Akiko Onda, Harue Suzuki, Philip Milliken, Arun Sridhar
The thyroid and parathyroid glands are dually innervated by sympathetic (cervical sympathetic trunk [CST]) and parasympathetic (superior laryngeal nerve [SLN]) nerve fibers. We examined the effects of electrical stimulation of efferent or afferent nerve fibers innervating the thyroid and parathyroid glands on the secretion of immunoreactive calcitonin (iCT), parathyroid hormone (iPTH), 3,3',5-triiodothyronine (iT3), and thyroxine (iT4) from the thyroid and parathyroid glands. In anesthetized and artificially ventilated rats, thyroid venous blood was collected...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28693723/determination-of-formylated-dna-and-rna-by-chemical-labeling-combined-with-mass-spectrometry-analysis
#11
Han-Peng Jiang, Ting Liu, Ning Guo, Lei Yu, Bi-Feng Yuan, Yu-Qi Feng
Nucleic acids carry diverse chemical modifications that exert critical influences in a variety of cellular processes in living organisms. In addition to methylation, the emerging DNA and RNA formylation has been reported to play functional roles in various physiological processes. However, the amounts of formylated DNA and RNA are extremely low and detection of DNA and RNA formylation is therefore a challenging task. To address this issue, we developed a strategy by chemical labeling combined with in-tube solid-phase microextraction - ultra high performance liquid chromatography - electrospray ionization - tandem mass spectrometry (in-tube SPME-UPLC-ESI-MS/MS) analysis for the sensitive determination of DNA and RNA formylation...
August 15, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28687919/superior-laryngeal-nerve-in-thyroid-surgery-anatomical-identification-and-monitoring
#12
M Gavid, M D Dubois, E Larivé, J M Prades
The aim of this study was to validate a procedure to identify and preserve the external branch of the superior laryngeal nerve (EBSLN) during thyroid surgery. The present study also aimed to analyze the EBSLN and the vagus nerve activities after stimulation and demonstrate an operative association between all the laryngeal muscles. Dissection of the cervical region was performed bilaterally in four adult cadavers. In a second step, 144 patients undergoing total thyroidectomy were included. Intraoperative stimulations of the cervical vagus nerve and the EBSLN in the sternothyroid-laryngeal triangle were performed bilaterally...
July 7, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28675294/quantifying-protection-in-disordered-proteins-using-millisecond-hydrogen-exchange-mass-spectrometry-and-peptic-reference-peptides
#13
COMPARATIVE STUDY
Mohammed A Al-Naqshabandi, David D Weis
The extent and location of transient structure in intrinsically disordered proteins (IDPs) provide valuable insights into their conformational ensembles and can lead to a better understanding of coupled binding and folding. Millisecond amide hydrogen exchange (HX) can provide such information, but it is difficult to quantify the degree of transient structuring. One reason is that transiently disordered proteins undergo HX at rates only slightly slower than the rate of amide HX by an unstructured random coil, the chemical HX rate...
August 8, 2017: Biochemistry
https://www.readbyqxmd.com/read/28672730/analytical-and-clinical-performance-of-thyroglobulin-autoantibody-assays-in-thyroid-cancer-follow-up
#14
Waddah Katrangi, Stephan K G Grebe, Alicia Algeciras-Schimnich
BACKGROUND: While thyroglobulin autoantibodies (TgAb) can result in false low serum thyroglobulin (Tg) immunoassay (IA) measurements, they might also be indicators of disease persistence/recurrence. Hence, accurate TgAb measurement, in addition to Tg quantification, is crucial for thyroid cancer monitoring. We compared the analytical and clinical performance of four commonly used TgAb IAs. METHODS: We measured Tg by mass spectrometry (Tg-MS) and by four pairs of Tg and TgAb IAs (Beckman, Roche, Siemens, Thermo) in 576 samples...
June 23, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28634649/assessment-of-cabozantinib-treatment-on-qt-interval-in-a-phase-3-study-in-medullary-thyroid-cancer-evaluation-of-indirect-qt-effects-mediated-through-treatment-induced-changes-in-serum-electrolytes
#15
RANDOMIZED CONTROLLED TRIAL
Dale R Miles, Steven A Lacy, David R Wada, Steve Milwee, Yifah Yaron, Linh T Nguyen
PURPOSE: This study evaluated factors impacting QTc interval in a phase 3 trial of cabozantinib in progressive, metastatic, medullary thyroid cancer (MTC). METHODS: Electrocardiogram (12-lead ECG) measurements were obtained at screening, and at pre-dose, and 2, 4, and 6 h post-dose on Days 1 and 29 in a phase 3 study in patients with MTC treated with cabozantinib (140 mg/day). Central tendency analyses were conducted on baseline-corrected QTc values. Linear and nonlinear mixed-effects models were used to evaluate potential factors affecting the QTc interval, including serum electrolytes, patient demographics, and cabozantinib concentration...
August 2017: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/28622440/chemical-characterization-and-biological-activities-of-phenolic-rich-fraction-from-cauline-leaves-of-isatis-tinctoria-l-brassicaceae-growing-in-sicily-italy
#16
Natalizia Miceli, Angela Filocamo, Salvatore Ragusa, Francesco Cacciola, Paola Dugo, Luigi Mondello, Marilena Celano, Valentina Maggisano, Maria Fernanda Taviano
The present work focused on the evaluation of the antioxidant and cytotoxic activities of the phenolic-rich fraction (ItJ-EAF) obtained from cauline leaves collected in January from Isatis tinctoria L. (Brassicaceae) growing wild around Acireale (Sicily, Italy). The total phenolic, flavonoid, and condensed tannin contents of the fraction were determined spectrophotometrically, whereas the phenolic profile was assessed by HPLC-PDA/ESI-MS analysis. A total of 20 compounds were positively identified and twelve out of them were never previously reported in I...
June 16, 2017: Chemistry & Biodiversity
https://www.readbyqxmd.com/read/28617535/research-on-the-protective-effects-of-antioxidants-on-metabolic-syndrome-induced-by-thyroid-dysfunction
#17
Y Chen, Z Zhou, X-X Li, T Wang
OBJECTIVE: This paper researches on the protective effects of antioxidants on metabolic syndrome induced by thyroid dysfunction. While the role of Lipoic acid (LA), Resveratrol (R) and Quercetin (Q) are recognized, the mechanisms for their ameliorative effects are partially understood. Therefore, the objective of this study was to determine the prevalence of MS among university workers and to examine the relationship with thyroid function and mechanisms for protective effects of LA, Resveratrol and Quercetin on the heart, kidneys and lungs...
May 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28599168/impurity-profiling-of-liothyronine-sodium-by-means-of-reversed-phase-hplc-high-resolution-mass-spectrometry-on-line-h-d-exchange-and-uv-vis-absorption
#18
M Ruggenthaler, J Grass, W Schuh, C G Huber, R J Reischl
For the first time, a comprehensive investigation of the impurity profile of the synthetic thyroid API (active pharmaceutical ingredient) liothyronine sodium (LT3Na) was performed by using reversed phase HPLC and advanced structural elucidation techniques including high resolution tandem mass spectrometry (HRMS/MS) and on-line hydrogen-deuterium (H/D) exchange. Overall, 39 compounds were characterized and 25 of these related substances were previously unknown to literature. The impurity classification system recently developed for the closely related API levothyroxine sodium (LT4Na) could be applied to the newly characterized liothyronine sodium impurities resulting in a wholistic thyroid API impurity classification system...
September 5, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28553598/visual-evoked-potentials-in-overt-hypothyroid-patients-before-and-after-achievement-of-euthyroidism
#19
Aprajita, Geetanjali Sharma, Sameer Aggarwal
BACKGROUND: Visual evoked potential (VEP) measures the time taken for visual stimulus to travel from the eye to the occipital cortex. Hypothyroidism affects the central nervous system (CNS) through its role in gene expression, myelin production, axonal transportation, and neurotransmitters. Delay in the conduction of impulses results in abnormal VEP. OBJECTIVE: Correlate the electrophysiological findings of VEP in newly diagnosed treatment-naive hypothyroid patients before and after 3 months of treatment and to find the correlation with serum thyroid-stimulating hormone (TSH) levels...
May 2017: Indian Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28542464/maternal-low-thyroxin-levels-are-associated-with-adverse-pregnancy-outcomes-in-a-chinese-population
#20
Yong Zhang, Xiaobei Dai, Shuai Yang, Chen Zhang, Mi Han, He-Feng Huang, Jianxia Fan
Although thyroid dysfunction in early pregnancy may have adverse effects on pregnancy outcomes, few studies have examined the relationship between maternal low free thyroxin (FT4) levels in both first and third trimesters of pregnancy and the incidence of adverse pregnancy outcomes. We hypothesized that low FT4 levels in either first or third trimesters of pregnancy may have different effects on pregnancy outcomes. The study included 6,031 mothers who provided both first and third pregnancy serum samples for analyses of thyroid function...
2017: PloS One
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