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Endocrine

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https://www.readbyqxmd.com/read/28538401/atrial-fibrillation-was-changed-into-sinus-bradycardia-in-a-ros1-positive-advanced-lung-adenocarcinoma-patient-who-achieved-durable-response-to-crizotinib-a-case-report-and-literature-review
#1
Lan Liu, Jing Wu, Wei Zhao, Mei-Juan Huang
RATIONAL: The c-ros oncogene 1 receptor tyrosine kinase (ROS1)-rearrangements represent a new and rare genetic subtype of non-small-cell lung cancer. In recent years, the use of crizotinib in ROS1-rearranged lung cancer exhibits significant clinical efficacy. Crizotinib is generally well tolerated and the most frequent adverse events include visual disorders, gastrointestinal disturbances, cardiac, and endocrine abnormalities. From a cardiac perspective, crizotinib is associated with 2 main cardiac effects, QT interval prolongation and bradycardia...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28538090/late-effects-in-pediatric-high-risk-neuroblastoma-survivors-after-intensive-induction-chemotherapy-followed-by-myeloablative-consolidation-chemotherapy-and-triple-autologous-stem-cell-transplants
#2
Amy E Armstrong, Karina Danner-Koptik, Shannon Golden, Jennifer Schneiderman, Morris Kletzel, Jennifer Reichek, Yasmin Gosiengfiao
Multimodal treatment in high-risk neuroblastoma has modestly improved survival; limited data exist on the late effects from these regimens. We report the sequelae of treatment incorporating 3 consecutive cycles of high-dose therapy and autologous stem cell transplants (ASCTs) without the use of total body irradiation (TBI). We reviewed the medical records of 61 patients treated on or following the Chicago Pilot 2 protocol between 1991 and 2008. Of the 25 patients who are alive (41%), 19 had near complete data to report...
May 23, 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/28535639/-curative-effect-analysis-of-two-surgical-methods-for-removal-of-pituitary-adenoma-via-endonasal-transsphenoidal-approach
#3
Y Han, Z Q Jiang, X L Zheng, L Li, F Y Lou, S J Zhang
Objective: To compare the efficacy of endoscopic endonasal transsphenoidal surgery and microsurgery for pituitary adenomas. Methods: One hundred and ten patients with pituitary adenoma who were treated by single nostril transsphenoidal surgery in the department of neurosurgery of the First Affiliated Hospital of Bengbu Medical College from June 2014 to December 2016 were enrolled.These cases were randomly divided into endoscopic group 53 cases (including 36 cases of functional pituitary adenoma and 17 cases of non-functional pituitary adenoma) and microscope group 57 cases (including 34 cases of pituitary adenoma and 23 cases of non-functional pituitary adenomas), with no significant difference in preoperative clinical data about gender, age, tumor size and endocrine function (P>0...
May 23, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28535433/a-highly-selective-surface-coating-for-enhanced-membrane-rejection-of-endocrine-disrupting-compounds-mechanistic-insights-and-implications
#4
Hao Guo, Yu Deng, Zhikan Yao, Zhe Yang, Jianqiang Wang, Chuner Lin, Tong Zhang, Baoku Zhu, Chuyang Y Tang
We designed a highly selective surface coating to achieve enhanced rejection of endocrine disrupting compounds (EDCs) by nanofiltration membranes. A commercial NF90 membrane was first coated with polydopamine (PDA) followed by in situ immobilization of silver nanoparticles (AgNPs). This PDA/AgNPs coating greatly improved EDC rejection at the expense of slight water permeability loss (4-10%). This improvement in rejection can be attributed to a combination of enhanced size exclusion and suppressed hydrophobic interaction...
May 18, 2017: Water Research
https://www.readbyqxmd.com/read/28535372/a-brain-region-specific-neural-pathway-regulating-germinal-matrix-angiogenesis
#5
Shang Ma, Devi Santhosh, Peeyush Kumar T, Zhen Huang
Intimate communication between neural and vascular cells is critical for normal brain development and function. Germinal matrix (GM), a key primordium for the brain reward circuitry, is unique among brain regions for its distinct pace of angiogenesis and selective vulnerability to hemorrhage during development. A major neonatal condition, GM hemorrhage can lead to cerebral palsy, hydrocephalus, and mental retardation. Here we identify a brain-region-specific neural progenitor-based signaling pathway dedicated to regulating GM vessel development...
May 22, 2017: Developmental Cell
https://www.readbyqxmd.com/read/28535311/quantification-of-estradiol-uptake-in-zebrafish-embryos-and-larvae
#6
J Paige Souder, Daniel A Gorelick
Zebrafish are a powerful model system to assess the molecular and cellular effects of exposure to toxic chemicals during embryonic development. To study the effects of environmental endocrine disruptors, embryos and larvae are commonly exposed to supraphysiologic concentrations of these compounds in the water, but their bioavailability in zebrafish is largely unknown. One hypothesis is that supraphysiologic concentrations of estrogens in the water are required to achieve physiologic levels in vivo, however this has not been directly tested...
May 23, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28534964/tamoxifen-promotes-apoptosis-and-inhibits-invasion-in-estrogen%C3%A2-positive-breast-cancer-mcf%C3%A2-7-cells
#7
Wei Li, Xingpeng Shi, Yan Xu, Jianmei Wan, Shaohua Wei, Ran Zhu
Tamoxifen (TAM) is the earliest non-steroidal antiestrogen drug, which has been widely used in endocrine therapy targeting breast cancer. The aim of the present study was to investigate the effect of TAM on the proliferation, apoptosis, migration and invasion of the estrogen‑positive (ER+) breast cancer cell line MCF‑7 in vitro, and elucidate its mechanisms. It was demonstrated that TAM suppressed proliferation, migration and invasion, and induced apoptosis in MCF‑7 cells. Further investigation revealed that the mitochondrial membrane potential and the amount of ATP were significantly decreased following the treatment of MCF‑7 cells with TAM...
May 18, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28534685/biotin-interference-with-routine-clinical-immunoassays-understand-the-causes-and-mitigate-the-risks
#8
Shanika Samarasinghe, Farah Meah, Vinita Singh, Arshi Basit, Nicholas Emanuele, Mary Ann Emanuele, Alaleh Mazhari, Earle W Holmes
OBJECTIVES: The objectives of this report are to review the mechanisms of biotin interference with streptavidin/biotin-based immunoassays, identify automated immunoassay systems vulnerable to biotin interference, describe how to estimate and minimize the risk of biotin interference in vulnerable assays, and review the literature pertaining to biotin interference in endocrine function tests. METHODS: The data in the manufacturer's "Instructions for Use" for each of the methods utilized by seven immunoassay system were evaluated...
May 23, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/28534681/referral-of-older-thyroid-cancer-patients-to-a-high-volume-surgeon-results-of-a-multidisciplinary-physician-survey
#9
Maria Papaleontiou, Paul G Gauger, Megan R Haymart
OBJECTIVE: Surgical outcomes of thyroid cancer patients are improved with high-volume surgeons. However, age disparities in referral to specialist surgical centers still exist. The factors that influence decision-making regarding referral of older thyroid cancer patients to high-volume surgeons remain unknown. METHODS: We surveyed members of the Endocrine Society, American College of Physicians and American Academy of Family Practice. RESULTS: Overall, 270 physicians completed the survey...
May 23, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/28534551/-origin-of-newborn-screening-programs-and-their-beginnings-in-spain
#10
REVIEW
E Vicente, L Casas, E Ardanaz
The first newborn screening programs to detect congenital errors of the metabolism and other endocrinal diseases started in the late 1950s and, one decade later, were introduced in Spain. Since then they have evolved considerably, but in a very heteroge-neous way, at both the international level and the regional level. The continuous scientific and technological advances, basically since the year 2000, have accentuated these inequalities, making this question into an inexhaustible subject of review, debate and argument up until the present...
April 30, 2017: Anales del Sistema Sanitario de Navarra
https://www.readbyqxmd.com/read/28534195/identification-of-a-small-molecule-that-facilitates-the-differentiation-of-human-ipscs-escs-and-mouse-embryonic-pancreatic-explants-into-pancreatic-endocrine-cells
#11
Yasushi Kondo, Taro Toyoda, Ryo Ito, Michinori Funato, Yoshiya Hosokawa, Satoshi Matsui, Tomomi Sudo, Masahiro Nakamura, Chihiro Okada, Xiaotong Zhuang, Akira Watanabe, Akira Ohta, Nobuya Inagaki, Kenji Osafune
AIMS/HYPOTHESIS: Pancreatic beta-like cells generated from human induced pluripotent stem cells (hiPSCs) or human embryonic stem cells (hESCs) offer an appealing donor tissue source. However, differentiation protocols that mainly use growth factors are costly. Therefore, in this study, we aimed to establish efficient differentiation protocols to change hiPSCs/hESCs to insulin (INS)(+) cells using novel small-molecule inducers. METHODS: We screened small molecules that increased the induction rate of INS(+) cells from hESC-derived pancreatic and duodenal homeobox 1 (PDX1)(+) pancreatic progenitor cells...
May 22, 2017: Diabetologia
https://www.readbyqxmd.com/read/28534176/functions-of-pregnane-x-receptor-in-self-detoxification
#12
REVIEW
Liuqin He, Xihong Zhou, Niu Huang, Huan Li, Tiejun Li, Kang Yao, Yanan Tian, Chien-An Andy Hu, Yulong Yin
Pregnane X receptor (PXR, NR1I2), a member of the nuclear receptor superfamily, is a crucial regulator of nutrient metabolism and metabolic detoxification such as metabolic syndrome, xenobiotic metabolism, inflammatory responses, glucose, cholesterol and lipid metabolism, and endocrine homeostasis. Notably, much experimental and clinical evidence show that PXR senses xenobiotics and triggers the detoxification response to prevent diseases such as diabetes, obesity, intestinal inflammatory diseases and liver fibrosis...
May 22, 2017: Amino Acids
https://www.readbyqxmd.com/read/28533500/primary-hyperparathyroidism-diagnosis-and-management-in-2017
#13
Hamid Syed, Aliya Khan
Primary hyperparathyroidism is a relatively common endocrine condition which is being increasingly identified in its asymptomatic stage following  routine evaluation of serum calcium. The effects of parathyroid hormone and calcium excess  impact multiple organ systems. The greatest effects are seen on the skeleton and on the kidney. This overview will describe the advances in diagnosis, presentation, and management of primary hyperparathyroidism today.
May 23, 2017: Polish Archives of Internal Medicine
https://www.readbyqxmd.com/read/28533295/comparative-pathogenesis-of-autoimmune-diabetes-in-humans-nod-mice-and-canines-has-a-valuable-animal-model-of-type-1-diabetes-been-overlooked
#14
Allison L O'Kell, Clive Wasserfall, Brian Catchpole, Lucy J Davison, Rebecka S Hess, Jake A Kushner, Mark A Atkinson
Despite decades of research in humans and mouse models of disease, substantial gaps remain in our understanding of pathogenic mechanisms underlying the development of type 1 diabetes. Furthermore, translation of therapies from preclinical efforts capable of delaying or halting β-cell destruction has been limited. Hence, a pressing need exists to identify alternative animal models that reflect human disease. Canine insulin deficiency diabetes is, in some cases, considered to follow autoimmune pathogenesis, similar to NOD mice and humans, characterized by hyperglycemia requiring lifelong exogenous insulin therapy...
June 2017: Diabetes
https://www.readbyqxmd.com/read/28533223/monarch-1-a-phase-2-study-of-abemaciclib-a-cdk4-and-cdk6-inhibitor-as-a-single-agent-in-patients-with-refractory-hr-her2-metastatic-breast-cancer
#15
Maura N Dickler, Sara Tolaney, Hope S Rugo, Javier Cortés, Veronique Dieras, Debra A Patt, Hans Wildiers, Clifford A Hudis, Joyce A O'Shaughnessy, Esther Zamora, Denise Yardley, Martin Frenzel, Andrew G Koustenis, José Baselga
<br />The phase 2 MONARCH 1 study was designed to evaluate the single-agent activity and adverse event (AE) profile of abemaciclib, a selective inhibitor of CDK4 and CDK6, in women with refractory hormone receptor positive (HR+), HER2- metastatic breast cancer (MBC). <br /><br />Experimental Design: <br />MONARCH 1 was a phase 2 single arm open-label study. Women with HR+/HER2- MBC who had progressed on or after prior endocrine therapy and had 1 or 2 chemotherapy regimens in the metastatic setting were eligible...
May 22, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28532906/first-report-of-coexistence-of-2-ectopic-pituitary-tumors-rathke-cleft-cyst-and-silent-acth-adenoma
#16
Mirza Pojskić, Blazej Zbytek, Neal S Beckford, Frederick A Boop, Kenan I Arnautović
Rathke cleft cysts (RCCs) and pituitary adenomas (PAs) are thought to have a common embryonic ancestry. Despite this, PAs with a concomitant RCC inside the sella turcica are rarely observed; ectopic pituitary tumors are also rare. We present the case of a 65-year-old woman with an ectopic RCC in the sphenoid sinus and outside of the sella turcica concomitant with an adrenocorticotropic hormone (ACTH)-staining, clinically silent PA. The patient presented with headache but no endocrine or visual disturbances...
May 19, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28532826/seasonal-infertility-in-gilts-and-sows-aetiology-clinical-implications-and-treatments
#17
REVIEW
Fabio De Rensis, Adam J Ziecik, Roy N Kirkwood
In gilts and sows, the summer-autumn period often is characterized by reduced fertility. Heat stress and long photoperiods during the warm season can cause a reduction in feed intake and an imbalance of the hypothalamic-hypophysial-ovarian axis. The increased variability in the interval between oestrus onset and ovulation results in an increased number of poorly timed inseminations. The altered endocrine activity compromises follicular and corpora luteal development, reduces oocyte quality and increases embryo mortality...
July 1, 2017: Theriogenology
https://www.readbyqxmd.com/read/28532684/quantitative-determination-of-testosterone-levels-with-biolayer-interferometry
#18
Hao Zhang, Wei Li, Hong Luo, Guangming Xiong, Yuanhua Yu
Natural and synthetic steroid hormones are widely spread in the environment and are considered as pollutants due to their endocrine activities, even at low concentrations, which are harmful to human health. To detect steroid hormones in the environment, a novel biosensor system was developed based on the principle of biolayer interferometry. Detection is based on changes in the interference pattern of white light reflected from the surface of an optical fiber with bound biomolecules. Monitoring interactions between molecules does not require radioactive, enzymatic, or fluorescent labels...
May 19, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28532594/the-endocrine-disrupting-alkylphenols-and-4-4-ddt-interfere-with-estrogen-conversion-and-clearance-by-mouse-liver-cytosol
#19
Talal El-Hefnawy, Claudia Hernandez, Laura P Stabile
Endocrine disrupting chemicals (EDCs) are ubiquitous compounds known for negative impacts on reproductive functions and for increasing cancer risk. EDCs are believed to cause the harmful effects in part through their inappropriate low-affinity binding to steroid receptors and other possible non-receptor mediated paradigms, however there is a need to further elucidate other mechanisms involving the direct and indirect impact of EDCs on reproductive functions. We examined the metabolism of 17β-estradiol (E2) and estrone (E1) by cell-free hepatic cytosol in the presence of alkylphenols (nonylphenol/NP and 4-tert-octylphenol/tOP), Dichlorodiphenyltrichloroethane (4,4'-DDT) and other EDCs...
May 19, 2017: Reproductive Biology
https://www.readbyqxmd.com/read/28531959/occurrence-and-removal-of-pharmaceuticals-hormones-personal-care-products-and-endocrine-disrupters-in-a-full-scale-water-reclamation-plant
#20
Ngoc Han Tran, Karina Yew-Hoong Gin
This study provided the first comprehensive data on the occurrence and removal of twenty-five target emerging contaminants (ECs) in a full-scale water reclamation plant (WRP) in the Southeast Asian region. Nineteen out of the twenty-five ECs were ubiquitously detected in raw influent samples. Concentrations of the detected ECs in raw influent samples ranged substantially from 44.3 to 124,966ng/L, depending upon the compound and sampling date. The elimination of ECs in full-scale conventional activated sludge (CAS) and membrane bioreactor (MBR) systems at a local WRP was evaluated and compared...
May 17, 2017: Science of the Total Environment
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