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https://www.readbyqxmd.com/read/29029094/thyroid-hormone-metabolism-defects-in-a-mouse-model-of-sbp2-deficiency
#1
Jiao Fu, Haruki Fujisawa, Benjamin Follman, Xiao-Hui Liao, Alexandra M Dumitrescu
SBP2 (selenocysteine insertion sequence binding protein 2) is an essential factor in selenoprotein synthesis. Patients with SBP2 defects have a characteristic thyroid phenotype and additional manifestations such as growth delay, male infertility, impaired motor coordination and developmental delay. The thyroid phenotype has become pathognomonic for this defect and putative deficiencies in the iodothyronine deiodinases selenoenzymes have been implicated. To investigate the role of SBP2 and selenoproteins in thyroid physiology and answer questions raised by the human syndrome we generated a tamoxifen inducible Sbp2 conditional knockout (iCKO) mouse model...
September 28, 2017: Endocrinology
https://www.readbyqxmd.com/read/29028671/prenatal-and-childhood-exposure-to-phthalate-diesters-and-thyroid-function-in-a-9-year-follow-up-birth-cohort-study-taiwan-maternal-and-infant-cohort-study
#2
Han-Bin Huang, Chia-Jui Chuang, Pen-Hua Su, Chien-Wen Sun, Chien-Jen Wang, Ming-Tsang Wu, Shu-Li Wang
BACKGROUND: Phthalates are widely used in industry, personal care products, and medications. Recent studies have suggested that phthalate exposure alters thyroid hormones. However, longitudinal studies concerning the association between phthalate exposure and thyroid function in children are scant. Therefore, we examined the association between pre- and postnatal phthalate exposure and thyroid function in children born in 2000-2001. METHODS: We studied 181 mother-child pairs in central Taiwan and followed-up the children from 2000 to 2009 at 2, 5, and 8 years old...
October 2017: Epidemiology
https://www.readbyqxmd.com/read/29024007/snp-mutations-occurring-in-thyroid-hormone-receptor-influenced-individual-susceptibility-to-triiodothyronine-molecular-dynamics-and-site-directed-mutagenesis-approaches
#3
Yaquan Liu, Kaili Qu, Ying Hai, Xin Li, Lei Zhao, Chunyan Zhao
The increasing evidences have suggested that expression of single nucleotide polymorphisms (SNP) coded thyroid hormone receptors (THR) generally are associated with individual susceptibility to chemicals. In the present research, multiple molecular dynamics simulations on four SNP mutants (G332R, T337△, G345R and G347E) were performed to investigate the structural and dynamical altering, which could lead to a binding capability variation to triiodothyronine (T3). It proved the structures of two SNP mutants (G345R and T337△) occurring in the THR proteins had experienced conformational change to a great extend, which also led to a significant decreasing in binding ability with T3...
October 11, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29023978/weight-gain-after-treatment-of-graves-disease-in-children
#4
G Todd Alonso, Shona Rabon, Perrin C White
OBJECTIVE: The frequency of and risk factors for weight gain in children treated for Graves disease have not been described. We evaluated change in BMI Z score and predictors of weight gain in this population. DESIGN: Retrospective review of data from January 2000 to July 2011. PATIENTS: 222 children and adolescents with Graves' disease (ages 2-18 years) evaluated following radioactive iodine administration (RAI) (n=101), thyroidectomy (n=9), and initiation of medical therapy (n=112)...
October 12, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/29021683/aarskog-scott-syndrome-an-unusual-cause-of-scoliosis
#5
Kerim Sariyilmaz, Okan Ozkunt, Murat Korkmaz, Fatih Dikici, Unsal Domanic
A 16-year-old boy who had been diagnosed previously as Aarskog-Scott syndrome (AAS), referred to our clinic with shoulder asymmetry for 1 year. Results of spine examination showed a 52° right thoracic curve at T3-T11. Surgery was planned, and T1-L1 posterior instrumentation and fusion were performed. After surgery, satisfactory correction was achieved, and during 10 years follow-up, the patient had no complaints. AAS is a X-linked genetic disorder with facial, genital, and skeletal manifestations. Scoliosis is not reported as a typical finding of AAS, and there is no reported case in the English literature...
July 2017: Journal of Craniovertebral Junction and Spine
https://www.readbyqxmd.com/read/29019899/effect-of-cerebral-oxygen-saturation-on-postoperative-nausea-and-vomiting-in-female-laparoscopic-surgery-patients
#6
WenJun Guo, Jie Ding, XiaoJu Jin, GaoJie Li
BACKGROUND: The purpose of this study was to investigate effect of cerebral oxygen saturation (SCTO2) on postoperative nausea and vomiting (PONV) in female patients who underwent laparoscopic surgery. METHODS: This study included 90 female patients who underwent laparoscopic surgery (60 cases of gynecological operations and 30 cases of gallbladder operations). All patients were allocated into 3 groups of 30 patients each: group A (gynecological laparoscopic surgery), group B (gynecological laparoscopic surgery with mannitol treatment) and group C (laparoscopic cholecystectomy surgery)...
October 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29017816/oral-and-dermal-diflubenzuron-exposure-causes-a-hypothalamic-pituitary-thyroid-hpt-axis-disturbance-in-the-mongolian-racerunner-eremias-argus
#7
Jing Chang, Huili Wang, Peng Xu, Baoyuan Guo, Jianzhong Li, Yinghuan Wang, Wei Li
Diflubenzuron (DFB) is a potential endocrine-disrupting chemical. However, its thyroid endocrine effect on reptiles has not been reported. In this study, immature lizards (Eremias argus) were exposed to 20 mg kg(-1) DFB once a week for 42 days through oral or dermal routes. Their body weight, plasma thyroid hormone levels, thyroid gland histology and the transcription of hypothalamic-pituitary-thyroid (HPT) axis-related genes in different tissues were assessed to explore the effects of DFB on the HPT axis of lizards...
October 7, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/29016478/subjective-and-objective-responses-to-two-rugby-7-s-world-series-competitions
#8
Peter M Fowler, Andrew Murray, Abdulaziz Farooq, Nick Lumley, Lee Taylor
The purpose was to examine the utility of subjective and objective measures of player preparedness, interpreted at both a group and individual level, during two consecutive competitions of the World Rugby Sevens Series (WRSS). Subjective (sleep, energy and muscle soreness ratings) and objective [heart rate (HR) at rest (HRREST) and in response to submaximal exercise (HREX)] measures were obtained from 16 male Rugby-7s players from one team for three consecutive days (D1-3) at home (HOME) and upon arrival at four tournament (T1-4) locations (T1-New Zealand and T2-USA; T3-Hong Kong and T4-Tokyo) across two WRSS competitions (two tournaments per competition) separated by 1 month...
October 7, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29016463/a-preliminary-study-of-the-effects-of-a-multitheory-driven-intervention-in-adults-with-prediabetes-mellitus
#9
Fu-Mian Tsai, Chiu-Chu Lin, Huey-Shyan Lin, Yi Liu
BACKGROUND: Prediabetes mellitus (pre-DM) is an important predictive indicator of Type 2 diabetes. A person with pre-DM is eight times more likely to develop diabetes than a person without pre-DM. Prior research suggests that proactive interventions may delay the progression of this disease and reduce the rate of disease development. PURPOSE: The purposes of this preliminary study were to develop a multitheory-driven lifestyle intervention protocol for adults with pre-DM and to evaluate its feasibility and impacts on knowledge regarding pre-DM, dietary behaviors, and physical activity (primary outcomes) as well as to describe the disease progression indicators (secondary outcomes)...
October 10, 2017: Journal of Nursing Research: JNR
https://www.readbyqxmd.com/read/28993177/dkk1-and-sclerostin-are-early-markers-of-relapse-in-multiple-myeloma
#10
Charlotte Mabille, Adeline Ruyssen Witrand, Yannick Degboe, Isabelle Gennero, Herve Avet Loiseau, Murielle Roussel, Benjamin Hebraud, Delphine Nigon, Michel Attal, Michel Laroche
Recent studies have shown that Dickkopf-related protein (DKK1) and sclerostin decrease when a complete response (CR) is obtained after chemotherapy in myeloma multiple (MM). To study variations in DKK1, sclerostin and P1NP in patients treated for MM, between complete response (CR) and relapse, we carried out a prospective study ancillary to the IFM 2009 protocol (IFM). The aim of IFM was to compare progression-free survival between patients treated with chemotherapy with or without transplantation. We selected 69 patients who reached CR and relapsed...
October 6, 2017: Bone
https://www.readbyqxmd.com/read/28992539/cross-lagged-associations-between-posttraumatic-stress-symptoms-and-coping-self-efficacy-in-long-term-recovery-a-four-wave-comparative-study
#11
Mark W G Bosmans, Peter G van der Velden
RATIONALE: Trauma-related coping self-efficacy (CSE) - in brief, the perceived ability to cope with the aftermath of a traumatic event - has been shown to affect psychological outcomes. A previous study showed that CSE affects subsequent PTSS levels, but not vice versa among a sample exposed 0-6 months ago. OBJECTIVE: In this four-wave follow-up study we examined the cross-lagged relationships between CSE and posttraumatic stress symptoms (PTSS) among those exposed to PTEs (potentially traumatic events) 1-2 years before T1 in order to examine direction of influence...
September 22, 2017: Social Science & Medicine
https://www.readbyqxmd.com/read/28990606/a-combined-docosahexaenoic-acid-thyroid-hormone-protocol-upregulates-rat-liver-%C3%AE-klotho-expression-and-downstream-components-of-fgf21-signaling-as-a-potential-novel-approach-to-metabolic-stress-conditions
#12
R Vargas, B Riquelme, J Fernández, L A Videla
Liver preconditioning by a docosahexaenoic acid (DHA) and triiodothyronine (T3) combined protocol underlies peroxisome-proliferator activated receptor α (PPARα)-fibroblast growth factor 21 (FGF21) upregulation, the study of the regulatory mechanisms involved being the aim of this work. Combined DHA (daily doses of 300 mg kg(-1) for 3 days)-T3 (0.05 mg kg(-1) at the fourth day) administration elicited higher levels of liver DHA and serum T3, with enhanced hepatic nuclear/cytosolic PPARα ratios, upregulation of FGF21 and β-Klotho expression, and a small reduction in that of FGF receptor 1 (FGFR1), compared with the respective controls...
October 9, 2017: Food & Function
https://www.readbyqxmd.com/read/28989211/high-resolution-free-triiodothyronine-thyrotropin-ft3-tsh-responses-to-a-single-oral-dose-of-liothyronine-in-humans-evidence-of-distinct-inter-individual-differences-unraveled-using-an-electrical-network-model
#13
Simon L Goede, Keith R Latham, Melvin Khee-Shing Leow, Jacqueline Jonklaas
The effects of a single oral dose of liothyronine (L-T3) on thyroid stimulating hormone (TSH) and other related thyroid system parameters are partly understood despite therapeutic use of this hormone over many decades. We characterize individualized responses of the hypothalamus-pituitary-thyroid (HPT) axis and its related temporal hormonal profile using an electrical network model. Based on thyroid hormone responses from blood samples using a single 50 μg oral dose of liothyronine in healthy persons with a normal operating euthyroid feedback HPT system, we derived an equivalent electrical circuit model for the system's responses...
March 2017: Journal of Biological Systems
https://www.readbyqxmd.com/read/28989150/-parecoxib-suppresses-the-increase-of-neutrophil-to-lymphocyte-ratio-after-the-modified-radical-mastectomy
#14
Yunli Li, Lei Zhou, Xiaoxiao Li, Gong Chen, Kaiming Duan, Boni Ding, Wen Ouyang
To observe the effect of parecoxib on neutrophil-to-lymphocyte ratio (NLR)after the modified radical mastectomy, and to explore its potential mechanisms for inhibition of perioperative inflammation.
 Methods: A total of 40 breast cancer patients undergone the modified radical mastectomy were randomly divided into a parecoxib group (n=20) and a control group (n=20). The parecoxib group received intravenous parecoxib (40 mg, 5 mL) during general anesthesia induction, post-operative day 1 and day 2; the control group received intravenous normal saline (5 mL) at the corresponding time points...
September 28, 2017: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/28989029/applications-of-high-resolution-recycling-liquid-chromatography-from-small-to-large-molecules
#15
Fabrice Gritti, Sebastien Besner, Sylvain Cormier, Martin Gilar
A twin-column recycling separation process (TCRSP) is assembled and used to generate higher speed and/or higher resolution levels than those of the usual non-recycling process at the same back pressure. It enables the users to solve very challenging separation problems caused by too small selectivity factors and/or too low column efficiencies. The relative gain in speed-resolution performance increases with increasing the number of cycles in the TCRSP, decreasing the maximum allowable pressure imposed by the LC system, decreasing the column permeability, and with reducing the separation speed...
September 25, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28985838/t3-versus-t4-thoracoscopic-sympathectomy-for-palmar-hyperhidrosis-a-meta-analysis-and-systematic-review
#16
Wenxiong Zhang, Yiping Wei, Han Jiang, Jianjun Xu, Dongliang Yu
BACKGROUND: Palmar hyperhidrosis (PH) is a benign sympathetic disorder that can adversely affect the quality of life of patients. Thoracic sympathectomy (TS) at the T3 or T4 level has been used to treat PH. We aimed to determine the optimal denervation level for TS by comparing the efficacy of T3 TS versus T4 TS in PH patients. METHODS: We searched the PubMed, Ovid MEDLINE, EMBASE, Web of Science, ScienceDirect, the Cochrane Library, Scopus, and Google Scholar databases for studies comparing T3 versus T4 TS for PH...
October 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28984032/effects-of-dietary-selenium-and-moisture-on-the-physical-activity-and-thyroid-axis-of-cats
#17
S E Hooper, R Backus, S Amelon
Consumption of canned cat food is considered a risk factor for the development of feline hyperthyroidism. Because selenium and water are substantially higher in canned diets compared to dry diets, objectives of this study were to determine whether increased dietary selenium or water alters the function of the hypothalamic-pituitary-thyroid axis and leads to an increase in activity level. Employing a 28-day latin square design with a 14-day washout, six lean, neutered male domestic shorthair cats were fed (i) commercially available adult dry feline diet containing 0...
October 6, 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/28980233/molecular-and-neuroendocrine-mechanisms-of-avian-seasonal-reproduction
#18
T Katherine Tamai, Takashi Yoshimura
Animals living outside tropical zones experience seasonal changes in the environment and accordingly, adapt their physiology and behavior in reproduction, molting, and migration. Subtropical birds are excellent models for the study of seasonal reproduction because of their rapid and dramatic response to changes in photoperiod. For example, testicular weight typically changes by more than a 100-fold. In birds, the eyes are not necessary for seasonal reproduction, and light is instead perceived by deep brain photoreceptors...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28978075/the-abnormality-of-thyroid-hormones-in-patients-with-type-a-hepatic-encephalopathy
#19
Lin Wang, Wanyou Yu, Wukui Cao, Wei Lu
Abnormality of thyroid hormones in liver diseases is common, but data is lacking in patients with type A hepatic encephalopathy (HE). The present study was aimed to determine whether there was an abnormality in thyroid hormones among patients with type A HE. We measured the levels of thyroid hormones in 36 acute liver failure (ALF) patients with type A HE and in 29 acute liver injury patients (international normalized ratio, INR ≥ 1.5) without encephalopathy as control. The clinical parameters associated with abnormality of thyroid hormones were evaluated...
September 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28977371/resolution-of-generalized-compensatory-hyperhidrosis-related-to-sympathectomy-after-t2-sympatholysis
#20
Malcolm Brock, Christos S Georgiades
Compensatory hyperhidrosis (CH) is common after sympathectomy, and most treatments are ineffective. We present a 36-year-old man whose CH was effectively treated with percutaneous sympatholysis. The patient's axillary-palmar hyperhidrosis had been treated with T3-4 sympathetic ligation. The patient developed CH involving the head, face, back, torso and feet and was referred for computed tomography-guided percutaneous T2 sympatholysis for craniofacial symptoms, after which the patient experienced resolution of CH (complete face/neck/feet and partial back/torso), despite the treated level being above the previous ligation...
July 21, 2017: European Journal of Cardio-thoracic Surgery
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