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https://www.readbyqxmd.com/read/29083134/clinical-endocrinology-and-hormones-quantitation-the-increasing-role-of-mass-spectrometry
#1
Federica D'Aurizio, Marco Cantù
Clinical endocrinology has always had a close relationship with laboratory medicine. In fact, the quantification of hormones is of great importance for diagnosis, treatment, recurrence and patient's prognosis of endocrine disorders. This review dealt with the role of the laboratory in diagnosing endocrine pathologies related to adrenal gland, pituitary, gonads and thyroid. The measurements of the main hormones (17- hydroxyprogesterone, androstenedione, dehydroepiandrosterone sulphate, testosterone, estradiol, cortisol, aldosterone, metanephrines, thyroglobulin and insulin-like-growth factor-1) were described considering analytical characteristics but also some aspects of pre-analytical and post- analytical steps...
October 27, 2017: Minerva Endocrinologica
https://www.readbyqxmd.com/read/29080770/atypical-fatal-sarcocystosis-associated-with-sarcocystis-neurona-in-a-white-nosed-coati-nasua-narica-molaris
#2
Jitender P Dubey, John G Trupkiewicz, Shiv K Verma, Joseph D Mowery, Gloria Adedoyin, Tim Georoff, Michael E Grigg
The protozoan parasite Sarcocystis neurona is an important cause of disease in horses (equine protozoal myeloencephalitis, EPM) and marine mammals. Isolated reports of clinical EPM-like disease have been documented in a zebra, raccoon, domestic cat, domestic dog, ferret, skunk, mink, lynx, red panda and fisher. The predominant disease is encephalomyelitis associated with schizonts in neural tissues. Here, we report highly disseminated sarcocystosis, in many tissues of a captive White-nosed coati (Nasua narica molaris)...
November 30, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/29071976/-hypothalamic-transcription-profiles-associated-with-twirling-reducing-needling-in-rats-with-stress-induced-prehypertension
#3
Qi-Sheng Sun, Qi-Ying Guo, Wen-Rui Jia, Zong-Yu Jin, Zhi Ji, Qiu-Lei Guo, Fang-Yuan Yang, He Zhan, He Wang, Qing-Guo Liu
OBJECTIVE: To observe the effect of twirling-reducing needling on changes of profile of differentially-expressed genes in the hypothalamus in rats with stress-induced prehypertension (SI-PHT), so as to explore its mechanism under-lying improvement of prehypertension. METHODS: Wistar male rats were randomly divided into blank control group (n=12), model group (n=12) and acupuncture group (n=10). The SI-PHT model was established by planta-electric-shock stimulation (30 V, 5 s) plus noise stimulation (80-100 db, 50 ms), twice daily, continuously for 11 days...
June 25, 2017: Zhen Ci Yan Jiu, Acupuncture Research
https://www.readbyqxmd.com/read/29040951/perfluoroalkyl-substances-bone-density-and-cardio-metabolic-risk-factors-in-obese-8-12-year-old-children-a-pilot-study
#4
Naila Khalil, James R Ebert, Masato Honda, Miryoung Lee, Ramzi W Nahhas, Antti Koskela, Thomas Hangartner, Kurunthachalam Kannan
BACKGROUND AND OBJECTIVE: Perfluoroalkyl substances (PFASs), including perfluorooctanoic acid (PFOA), perfluorooctane sulfonic acid (PFOS), perfluorohexane sulfonic acid (PFHxS), and perfluorononanoic acid (PFNA), have been associated with adverse bone, and metabolic changes in adults. However association of PFASs with bone health in children is understudied. Considering their role as endocrine disruptors, we examined relationships of four PFASs with bone health in children. METHODS: In a cross sectional pilot study, 48 obese children aged 8-12 years were enrolled from Dayton's Children Hospital, Ohio...
October 14, 2017: Environmental Research
https://www.readbyqxmd.com/read/29033895/autoimmune-thyroid-diseases-in-patients-treated-with-alemtuzumab-for-multiple-sclerosis-an-example-of-selective-anti-tsh-receptor-immune-response
#5
REVIEW
Mario Rotondi, Martina Molteni, Paola Leporati, Valentina Capelli, Michele Marinò, Luca Chiovato
Alemtuzumab, a humanized anti-CD52 monoclonal antibody, is approved for the treatment of active relapsing-remitting multiple sclerosis (MS). Alemtuzumab induces a rapid and prolonged depletion of lymphocytes from the circulation, which results in a profound immuno-suppression status followed by an immune reconstitution phase. Secondary to reconstitution autoimmune diseases represent the most common side effect of Alemtuzumab treatment. Among them, Graves' disease (GD) is the most frequent one with an estimated prevalence ranging from 16...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29028670/cord-blood-bisphenol-a-levels-and-reproductive-and-thyroid-hormone-levels-of-neonates-the-hokkaido-study-on-environment-and-children-s-health
#6
Machiko Minatoya, Seiko Sasaki, Atsuko Araki, Chihiro Miyashita, Sachiko Itoh, Jun Yamamoto, Toru Matsumura, Takahiko Mitsui, Kimihiko Moriya, Kazutoshi Cho, Keita Morioka, Hisanori Minakami, Nobuo Shinohara, Reiko Kishi
BACKGROUND: Bisphenol A (BPA) is widely used and BPA exposure is nearly ubiquitous in developed countries. While animal studies have indicated adverse health effects of prenatal BPA exposure including reproductive dysfunction and thyroid function disruption possibly in a sex-specific manner, findings from epidemiologic studies have not been enough to prove these adverse effects. Given very limited research on human, the aim of this study was to investigate associations between cord blood BPA levels and reproductive and thyroid hormone levels of neonates and whether associations differed by neonate sex...
October 2017: Epidemiology
https://www.readbyqxmd.com/read/28989911/the-effect-of-levothyroxine-on-serum-levels-of-interleukin-10-and-interferon-gamma-in-rat-model-of-multiple-sclerosis
#7
Cobra Payghani, Fatemeh Khani, Aryan Rafiee Zadeh, Parham Reisi, Hojjatallah Alaei, Bahman Rashidi
BACKGROUND: There is an increase in inflammatory and a reduction in anti-inflammatory cytokines in multiple sclerosis (MS). Considering the role of thyroid hormones in the development and regulation of both neural and immune systems, the aim of this study was to evaluate the effects of levothyroxine on serum concentrations of interleukin-10 (IL-10) and interferon gamma (IFN-γ) in animal models of MS. MATERIALS AND METHODS: To induce demyelination in male Wistar rats, lysolecithin was injected into the optic chiasm...
2017: Advanced Biomedical Research
https://www.readbyqxmd.com/read/28958220/collective-ion-pair-single-drop-microextraction-attenuated-total-reflectance-fourier-transform-infrared-spectroscopic-determination-of-perchlorate-in-bioenvironmental-samples
#8
Swati Chandrawanshi, Santosh K Verma, Manas K Deb
Perchlorate (ClO₄(−)) is an environmental pollutant thataffects human health. Perchlorate acts as a competitive inhibitor of iodine uptake in the thyroid gland (sodium–iodide symporter inhibitor); thus, its determination is important for public health concerns. Water and milk constitute a significant portion of the human diet. Because regular intake leads to an increase in perchlorate concentration in the human body, the estimation of perchlorate is of great concern. In this work, ion-pair single-drop microextraction (SDME) combined with attenuated total reflectance (ATR)-FTIR spectroscopy has been developed for the determination of perchlorate in bioenvironmental (soil, water, dairy milk, breast milk, and urine) samples...
September 28, 2017: Journal of AOAC International
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
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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