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https://www.readbyqxmd.com/read/29656518/genotype-specific-progression-of-hereditary-medullary-thyroid-cancer
#1
Andreas Machens, Kerstin Lorenz, Frank Weber, Henning Dralle
Although already 25 years into the genomic era, age-related progression of hereditary medullary thyroid cancer (MTC), the prevalence of which is estimated at 1 in 80,000 inhabitants, remains to be delineated for most unique RET (REarranged during Transfection) mutations. Included in this study were 567 RET carriers. The age-related progression of MTC across histopathological groups (normal thyroid/C-cell hyperplasia; node-negative MTC; node-positive MTC) was statistically significant for 13 unique RET mutations (p...
April 14, 2018: Human Mutation
https://www.readbyqxmd.com/read/29656442/treatment-emergent-hypertension-and-efficacy-in-the-phase-3-study-of-e7080-lenvatinib-in-differentiated-cancer-of-the-thyroid-select
#2
Lori J Wirth, Makoto Tahara, Bruce Robinson, Sanjeev Francis, Marcia S Brose, Mouhammed Amir Habra, Kate Newbold, Naomi Kiyota, Corina E Dutcus, Elton Mathias, Matthew Guo, Steven I Sherman, Martin Schlumberger
BACKGROUND: Hypertension (HTN) is an established class effect of vascular endothelial growth factor receptor (VEGFR) inhibition. In the phase 3 Study of (E7080) Lenvatinib in Differentiated Cancer of the Thyroid (SELECT) trial, HTN was the most frequent adverse event of lenvatinib, an inhibitor of VEGFR1, VEGFR2, VEGFR3, fibroblast growth factor receptor 1 (FGFR1), FGFR2, FGFR3, FGFR4, platelet-derived growth factor receptor α (PDGFRα), ret proto-oncogene (RET), and stem cell factor receptor (KIT)...
April 14, 2018: Cancer
https://www.readbyqxmd.com/read/29656332/rdh13-deficiency-weakens-carbon-tetrachloride-induced-liver-injury-by-regulating-spot14-and-cyp2e1-expression-levels
#3
Xiaofang Cui, Benting Ma, Yan Wang, Yan Chen, Chunling Shen, Ying Kuang, Jian Fei, Lungen Lu, Zhugang Wang
Mitochondrion-localized retinol dehydrogenase 13 (Rdh13) is a short-chain dehydrogenase/reductase involved in vitamin A metabolism in both humans and mice. We previously generated Rdh13 knockout mice and showed that Rdh13 deficiency causes severe acute retinal light damage. In this study, considering that Rdh13 is highly expressed in mouse liver, we further evaluated the potential effect of Rdh13 on liver injury induced by carbon tetrachloride (CCl4 ). Although Rdh13 deficiency showed no significant effect on liver histology and physiological functions under regular culture, the Rdh13-/- mice displayed an attenuated response to CCl4 -induced liver injury...
April 14, 2018: Frontiers of Medicine
https://www.readbyqxmd.com/read/29656212/myeloid-related-proteins-are-up-regulated-in-autoimmune-thyroid-diseases-and-activate-toll-like-receptor-4-and-pro-inflammatory-cytokines-in-vitro
#4
Shiqiao Peng, Xuren Sun, Xinyi Wang, Haoyu Wang, Zhongyan Shan, Weiping Teng, Chenyan Li
PURPOSE: Myeloid-related protein (MRP) family plays an important role in the promotion of cell proliferation and the production of inflammatory cytokines. We investigated the expression of MRP6, MRP8 and MRP14 in thyroid tissues, serum, and peripheral blood monocular cells (PBMCs) in patients with autoimmune thyroid diseases (AITD). METHOD: The expression of MRP6, MRP8, and MRP14 was investigated using immunohistochemical staining and quantitative real-time polymerase chain reaction in the thyroid glands of 7 patients with Graves' disease (GD), 8 with Hashimoto's thyroiditis (HT), and 7 healthy controls (HC)...
April 12, 2018: International Immunopharmacology
https://www.readbyqxmd.com/read/29656046/developmental-expression-profiles-and-thyroidal-regulation-of-cytokines-during-metamorphosis-in-the-amphibian-xenopus-laevis
#5
Melanie J Gallant, Natacha S Hogan
Early life-stages of amphibians rely on the innate immune system for defense against pathogens. While thyroid hormones (TH) are critical for metamorphosis and later development of the adaptive immune system, the role of TH in innate immune system development is less clear. An integral part of the innate immune response are pro-inflammatory cytokines - effector molecules that allow communication between components of the immune system. The objective of this study was to characterize the expression of key pro-inflammatory cytokines, tumor necrosis factor-α (TNFα), interleukin-1β (IL-1β) and interferon-γ (IFN-γ), throughout amphibian development and determine the impacts of thyroidal modulation on their expression...
April 12, 2018: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/29655787/secretory-expression-and-scale-up-production-of-recombinant-human-thyroid-peroxidase-via-baculovirus-insect-cell-system-in-a-wave-type-bioreactor
#6
Ying Lou, Guorong Ji, Qin Liu, Pengbo Wang, Ruilin Zhang, Yuanxing Zhang, Xiaohong Liu
The human thyroid peroxidase (hTPO) is an essential enzyme for thyroid hormone biosynthesis and is expressed in thyroid cells. It is an autoantigen against which antibodies are found in the sera of patients with a number of autoimmune thyroid disorders. Overexpression of hTPO has been achieved using the baculovirus expression vector system (BEVS). However, it is produced largely in an aggregated form in the cell lysate fraction, which increases the complexity of protein extraction. In this study, to achieve improved secretory expression of hTPO via BEVS, a truncated recombinant hTPO protein (hTPOt) was engineered by replacing its original signal peptide (SP) in the N-terminal with five heterologous SPs...
April 12, 2018: Protein Expression and Purification
https://www.readbyqxmd.com/read/29653103/sterol-regulatory-element-binding-protein-1-trans-activates-25-hydroxy-vitamin-d-3-24-hydroxylase-gene-expression-in-renal-proximal-tubular-cells
#7
Tomohiro Kagawa, Mina Kozai, Masashi Masuda, Nagakatsu Harada, Otoki Nakahashi, Mari Tajiri, Ryouhei Yoshikawa, Mari Nakao, Yuichiro Takei, Masayuki Iwano, Eiji Takeda, Yutaka Taketani, Hironori Yamamoto
The physiological activity of the steroid derived hormone vitamin D is regulated by several enzymatic steps. Both 25-hydroxy vitamin D3 1α-hydroxylase (CYP27B1) and 25-hydroxyvitamin D3 24-hydroxylase (CYP24A1) modulate blood levels of 1,25-dihydroxyvitamin D3 , an activated form of vitamin D. We previously demonstrated that CYP27B1 expression was trans-activated by sterol regulatory element binding protein 1 (SREBP1), although whether SREBP1 also regulates CYP24A1 transcription was unclear. Here we investigated the ability of SREBP1 to affect CYP24A1 transcription...
April 10, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29652955/-neurodevelopmental-assessment-of-patients-with-congenital-hypothyroidism
#8
Alicia Núñez, Paula Bedregal, Carlos Becerra, Francisca Grob L
Congenital hypothyroidism (CH) is the most common cause of preventable cognitive disability worldwide. Generally, it is produced by an alteration in the embryogenesis of the thyroid gland or by an alteration in the synthesis of thyroid hormones, which determine that affected patients have low or absent thyroid hormone concentrations. The importance of this fact is that brain development during the first three years of life is highly dependent on thyroid hormones. Prior to the implementation of national neonatal screening programs around the world, 8 to 27% of children with CH had an IQ lower than 70...
December 2017: Revista Médica de Chile
https://www.readbyqxmd.com/read/29652748/the-scintigraphic-biodistribution-and-histopathological-evaluation-of-the-effect-of-experimental-131i-administration-on-the-gastrointestinal-system-and-the-demonstration-of-the-na-i-symporter-by-immunohistochemistry-in-rats
#9
Rahsan Yilmaz, Nihat Yumusak, Murat Sadic, Hasan I Atilgan, Meliha Korkmaz, Faruk Bozkaya
OBJECTIVE: The aim of this study was to investigate histopathological changes and biodistribution of iodine-131 (I) in the gastrointestinal system (GIS) and also Na/I Symporter (NIS) presence by immunohistochemically in the experimental treatment of rats with radioactive iodine (RAI). MATERIALS AND METHODS: Rats were divided into experimental and control groups as random early group 2 (24 h), intermediate group 3 (3 weeks), and late period group 4 (3 months). Experimental groups were administered 100 MBq (∼3 mCi, 12 mCi/kg) by orogastric route with orogastric tube...
April 12, 2018: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/29652618/transcriptome-network-analysis-reveals-aging-related-mitochondrial-and-proteasomal-dysfunction-and-immune-activation-in-human-thyroid
#10
Byuri Angela Cho, Seong-Keun Yoo, Young Shin Song, Su-Jin Kim, Kyu Eun Lee, Minho Shong, Young Joo Park, Jeong-Sun Seo
BACKGROUND: Elucidating aging-related transcriptomic changes in human organs is necessary to understand the aging physiology and mechanisms, but little is known regarding the thyroid gland. We investigated aging-related transcriptomic alterations in the human thyroid gland and characterized the related molecular functions. METHODS: Publicly available RNA sequencing (RNA-seq) data of 322 thyroid tissue samples from the Genotype-Tissue Expression project were analyzed...
March 20, 2018: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/29652599/risk-factors-for-new-hypothyroidism-during-tyrosine-kinase-inhibitor-therapy-in-advanced-nonthyroidal-cancer-patients
#11
Melissa G Lechner, Chirag M Vyas, Ole-Petter R Hamnvik, Erik K Alexander, P Reed Larsen, Toni K Choueiri, Trevor E Angell
BACKGROUND: Thyroid dysfunction during tyrosine kinase inhibitor (TKI) cancer treatment is common, but predisposing risk factors have not been determined. Recommendations for monitoring patients treated with one or multiple TKI and in conjunction with other relevant cancer therapies could be improved. The study objective was to assess the risk factors for new thyroid dysfunction in TKI-treated previously euthyroid cancer patients. METHODS: A retrospective cohort study of patients with advanced nonthyroidal cancer treated with TKI from 2000 to 2017, having available thyroid function tests showing initial euthyroid status, excluding patients with preexisting thyroid disease or lack of follow-up thyroid function tests...
April 2018: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/29652597/hypothyroidism-during-tyrosine-kinase-inhibitor-therapy-is-associated-with-longer-survival-in-patients-with-advanced-nonthyroidal-cancers
#12
Melissa G Lechner, Chirag M Vyas, Ole-Petter R Hamnvik, Erik K Alexander, P Reed Larsen, Toni K Choueiri, Trevor E Angell
BACKGROUND: Tyrosine kinase inhibitor (TKI)-induced thyroid dysfunction is recognized as a common adverse effect of treatment, but the importance of incident hypothyroidism during TKI therapy remains unclear. This study analyzed the prognostic significance of hypothyroidism during TKI therapy in cancer patients. METHODS: This was a retrospective cohort study of adult patients with advanced nonthyroidal cancer treated with TKI and available thyroid function testing at three affiliated academic hospitals from 2000 to 2017...
April 2018: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/29652409/erratum-to-linear-analysis-of-autonomic-activity-and-its-correlation-with-creatine-kinase-mb-in-overt-thyroid-dysfunctions
#13
Manisha Mavai, Yogendra Raj Singh, R C Gupta, Sandeep K Mathur, Bharti Bhandari
[This corrects the article DOI: 10.1007/s12291-017-0659-0.].
April 2018: Indian Journal of Clinical Biochemistry: IJCB
https://www.readbyqxmd.com/read/29651663/finding-the-molecular-scaffold-of-nuclear-receptor-inhibitors-through-high-throughput-screening-based-on-proteochemometric-modelling
#14
Tianyi Qiu, Dingfeng Wu, Jingxuan Qiu, Zhiwei Cao
Nuclear receptors (NR) are a class of proteins that are responsible for sensing steroid and thyroid hormones and certain other molecules. In that case, NR have the ability to regulate the expression of specific genes and associated with various diseases, which make it essential drug targets. Approaches which can predict the inhibition ability of compounds for different NR target should be particularly helpful for drug development. In this study, proteochemometric modelling was introduced to analysis the bioactivity between chemical compounds and NR targets...
April 12, 2018: Journal of Cheminformatics
https://www.readbyqxmd.com/read/29651624/in-papillary-thyroid-carcinoma-expression-by-immunohistochemistry-of-braf-v600e-pd-l1-and-pd-1-is-closely-related
#15
Yanhua Bai, Ting Guo, Xiaozheng Huang, Qi Wu, Dongfeng Niu, Xinqiang Ji, Qin Feng, Zhongwu Li, Kennichi Kakudo
Immune checkpoint inhibitor therapies targeting PD-L1/PD-1 have been shown to be effective in treating several types of human cancer. In papillary thyroid carcinoma (PTC), little is known about the expression of PD-L1/PD-1 in the tumor microenvironment or its potential correlation with BRAF V600E mutation status. In this study, we examined the expression of PD-L1, PD-1, and BRAF V600E in PTC by immunohistochemistry and investigated the clinical significance of expression status. We studied the expression of PD-L1, PD-1, and BRAF V600E by immunohistochemical staining in 110 cases of PTC with a diameter > 1 cm...
April 12, 2018: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/29651216/linear-analysis-of-autonomic-activity-and-its-correlation-with-creatine-kinase-mb-in-overt-thyroid-dysfunctions
#16
Manisha Mavai, Yogendra Raj Singh, R C Gupta, Sandeep K Mathur, Bharti Bhandari
Autonomic activity may be deranged in thyroid dysfunctions and may lead to cardiovascular morbidity and mortality. Myopathy is a common manifestation in thyroid disorders and may be associated with raised serum creatine kinase (CK). We hypothesized that cardiovascular abnormality in thyroid dysfunction may manifest as raised CK-MB. This study was designed to investigate the correlation of CK and its isoform CK-MB with thyroid profile and linear parameters of heart rate variability (HRV). The study was conducted on 35 hypothyroid and hyperthyroid patients each, and 25 age-matched healthy controls...
April 2018: Indian Journal of Clinical Biochemistry: IJCB
https://www.readbyqxmd.com/read/29651214/homeostatic-model-assessment-insulin-resistance-homa-ir-2-in-mild-subclinical-hypothyroid-subjects
#17
Shreejita Sengupta, T Jaseem, Jayachidambaram Ambalavanan, Anupama Hegde
Despite various studies with conflicting results, the effect of thyroid hormones on lipids and insulin levels in dysthyroidism is of great interest. This case control study was aimed to perceive the existence of IR and dyslipidemia in mild subclinical hypothyroid subjects (TSH ≤ 9.9 µIU/ml) as compared to their age and gender matched euthyroid controls. Basic demographic information like height, weight was recorded. Serum samples of all the subjects were assayed for thyroid profile, lipid profile, blood glucose, HbA1C and insulin...
April 2018: Indian Journal of Clinical Biochemistry: IJCB
https://www.readbyqxmd.com/read/29650690/the-genetic-characteristics-of-congenital-hypothyroidism-in-china-by-comprehensive-screening-of-21-candidate-genes
#18
Feng Sun, Jun-Xiu Zhang, Chang-Yi Yang, Guan-Qi Gao, Wen-Bin Zhu, Bing Han, Le-Le Zhang, Yue-Yue Wan, Xiao-Ping Ye, Yu-Ru Ma, Man-Man Zhang, Liu Yang, Qian-Yue Zhang, Wei Liu, Cui-Cui Guo, Gang Chen, Shuang-Xia Zhao, Ke-Yi Song, Huaidong Song
Objective Congenital hypothyroidism (CH), the most common neonatal metabolic disorder, is characterized by impaired neurodevelopment. Although several candidate genes have been associated with CH, comprehensive screening of causative genes has been limited. Desgin and Methods One-hundred and ten patients with primary CH were recruited in this study. All exons and exon-intron boundaries of 21 candidate genes for CH were analyzed by next-generation sequencing. And the intertance pattern of causative genes was analysised by the study of family pedigrees...
April 12, 2018: European Journal of Endocrinology
https://www.readbyqxmd.com/read/29650526/flushing-disorders-associated-with-gastrointestinal-symptoms-part-2-systemic-miscellaneous-conditions
#19
REVIEW
Vaibhav Rastogi, Devina Singh, Joseph J Mazza, Dennis Yang, Dipendra Parajuli, Steven H Yale
Flushing disorders with involvement of the gastrointestinal tract represent a heterogeneous group of conditions. In part 1 discussed were neuroendocrine tumors (NET), mast cell activation disorders (MCAD), and hyperbasophilia. In this section are covered the remaining flushing disorders which primarily or secondarily involves the gastrointestinal tract. This includes dumping syndrome, mesenteric traction syndrome, rosacea, hyperthyroidism and thyroid storm, anaphylaxis, panic disorders, paroxysmal extreme pain disorder, and food, alcohol and medications...
April 12, 2018: Clinical Medicine & Research
https://www.readbyqxmd.com/read/29650525/flushing-disorders-associated-with-gastrointestinal-symptoms-part-1-neuroendocrine-tumors-mast-cell-disorders-and-hyperbasophila
#20
REVIEW
Vaibhav Rastogi, Devina Singh, Joseph J Mazza, Dennis Yang, Dipendra Parajuli, Steven H Yale
Flushing is the subjective sensation of warmth accompanied by visible cutaneous erythema occurring throughout the body with a predilection for the face, neck, pinnae, and upper trunk where the skin is thinnest and cutaneous vessels are superficially located and in greatest numbers. Flushing can be present in either a wet or dry form depending upon whether neural-mediated mechanisms are involved. Activation of the sympathetic nervous system results in wet flushing, accompanied by diaphoresis, due to concomitant stimulation of eccrine sweat glands...
April 12, 2018: Clinical Medicine & Research
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