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Triiodothyronine

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https://www.readbyqxmd.com/read/28429223/sex-related-characteristics-of-systemic-hormonal-homeostasis-in-rats-with-sarcoma-c-45-cells-transplanted-to-the-lung
#1
M B Kozlova, E M Frantsiyants, L K Trepitaki, I V Kaplieva, Yu A Pogorelova, G Z Sergostyants, T G Airapetova, A V Chubaryan
Sex-related systemic status of pituitary and thyroid hormones and cortisol was studied in rats on days 7 and 14 after transplantation of sarcoma C-45 cells into the lung. Females demonstrated slower development of the tumor process (49.0±10.7 vs. 32.0±3.9 days in males). Injection of tumor cells causes similar disorders in the levels of ACTH, thyrotropic hormone, and prolactin in males and females and opposite disorders in the thyroid and glucocorticoid homeostasis associated in males (in contrast to females) with reduction of cortisol level (by 1...
April 21, 2017: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28423882/various-levels-of-rapeseed-meal-in-weaning-pig-diet-from-weaning-to-finishing-periods
#2
Sung Ho Do, Byeong Ock Kim, Lin Hu Fang, Dong Hyeon You, Jin Su Hong, Y Y Kim
Objective: This experiment was conducted to investigate the influence of rapeseed meal (RSM) supplementation in weaning pig diet on growth performance, blood profile, carcass characteristics and economic analysis on weaning to finishing pigs. Methods: A total of 120 cross bred ([Yorkshire × Landrace] × Duroc) weaning pigs were allotted to 5 treatments in a randomized complete block (RCB) design. Each treatment had 4 replications with 6 pigs per pen. Five different levels of RSM (0, 2, 4, 6 and 8%) were used as dietary treatments...
March 25, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28413469/repairing-effects-of-icam-1-expressing-mesenchymal-stem-cells-in-mice-with-autoimmune-thyroiditis
#3
Shifeng Ma, Xiuhui Chen, Lihui Wang, Ying Wei, Yongqing Ni, Yanan Chu, Yuanlin Liu, Heng Zhu, Rongxiu Zheng, Yi Zhang
The aim of the present study was to determine the repairing effects of intercellular adhesion molecule (ICAM)-1-expressing mesenchymal stem cells (MSCs) in mice with autoimmune thyroiditis. Following induction of an experimental autoimmune thyroiditis (EAT) model, mice were randomly divided into the following groups (n=10 each): i) Normal control; and experimental groups that were subject to EAT induction, including ii) EAT model; and iii) primary MSC; iv) C3H10T1/2/MSC; v) C3H10T1/2-MIGR1/MSC; and vi) C3H10T1/2-MIGR1-ICAM-1/MSC, which were all administered the relevant cells...
April 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28412990/influence-of-pre-storage-incubation-on-hatchability-traits-thyroid-hormones-antioxidative-status-and-immunity-of-newly-hatched-chicks-at-two-chicken-breeder-flock-ages
#4
T A Ebeid, F A Twfeek, M H Assar, A M Bealish, R E Abd El-Karim, M Ragab
Egg storage longer than 7 days is associated with negative effects on hatchability traits. Pre-storage incubation has been a suggested method to reduce the negative effects of long-term storage times by enhancing the developmental stage of the embryo and probably reducing the embryonic stress. The objective of the present study was to investigate the effects of pre-storage incubation and storage time on hatchability characteristics, chick quality and serum thyroid hormones, antioxidative properties and immunoglobulin Y (IgY) concentrations of newly hatched chicks at two breeder flock ages...
April 17, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28412521/a-lamprey-view-on-the-origins-of-neuroendocrine-regulation-of-the-thyroid-axis
#5
REVIEW
Stacia A Sower, Krist N Hausken
This mini review summarizes the current knowledge of the hypothalamic-pituitary-thyroid (HPT) endocrine system in lampreys, jawless vertebrates. Lampreys and hagfish are the only two extant members of the class of agnathans, the oldest lineage of vertebrates. The high conservation of the hypothalamic-pituitary-gonadal (HPG) axis in lampreys makes the lamprey model highly appropriate for comparative and evolutionary analyses. However, there are still many unknown questions concerning the hypothalamic-pituitary (HP) axis in its regulation of thyroid activities in lampreys...
April 12, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28395858/association-between-exposure-to-organochlorine-compounds-and-maternal-thyroid-status-role-of-the-iodothyronine-deiodinase-1-gene
#6
Sabrina Llop, Mario Murcia, Mar Alvarez-Pedrerol, Joan O Grimalt, Loreto Santa-Marina, Jordi Julvez, Fernando Goñi-Irigoyen, Mercedes Espada, Ferran Ballester, Marisa Rebagliato, Maria-Jose Lopez-Espinosa
INTRODUCTION: Exposure to organochlorine compounds (OCs) may interfere with thyroid hormone (TH) homeostasis. The disruption of the deiodinase (DIO) enzymes has been proposed as a mechanism of action. AIM: To evaluate the association between exposure to OCs and TH status in pregnant women, as well as to explore the role of genetic variations in the DIO1 and DIO2 genes. METHODS: The study population (n=1128) was composed of pregnant women who participated in the INMA Project (Spain, 2003-2006)...
April 8, 2017: Environment International
https://www.readbyqxmd.com/read/28395210/low-serum-thyroid-stimulating-hormone-levels-are-associated-with-lipid-profile-in-depressive-patients-with-long-symptom-duration
#7
Rui Peng, Yan Li
OBJECTIVE: The current study was designed to investigate the association between serum thyroid hormones and thyroid-stimulating hormone (TSH) levels with lipid profile in depressive disorder. METHODS: A total of 370 depressive individuals aged 18 years and above were recruited in this cross-section study. All participants underwent a Structured Clinical Interview for DSM-IV (SCID) and recorded the duration of their symptoms. The serum levels of total cholesterol (TCH), triglyceride (TG), high density lipoprotein cholesterol (HDL-C), low density lipoprotein cholesterol (LDL-C), lipoprotein A (Lp(a)), high-sensitivity C-reactive protein (hsCRP), free thyroxine (FT4), free triiodothyronine (FT3) and TSH levels were determined and the ratios of TCH/HDL-C were assessed...
March 28, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28391251/gestational-age-specific-reference-intervals-for-serum-thyroid-hormone-levels-in-a-multi-ethnic-population
#8
Clement K M Ho, Edward T H Tan, Mor Jack Ng, George S H Yeo, Bernard Chern, Nancy W S Tee, Kenneth Y C Kwek, Kok Hian Tan
BACKGROUND: Thyroid disorders are common during pregnancy. To date, a limited number of studies have reported differences in serum thyroid hormone concentrations between different ethnic groups. We sought to establish gestational age-specific reference intervals for serum levels of thyroid hormones in a multi-ethnic population and investigate whether separate reference intervals should be used for different ethnic groups. METHODS: A total of 926 pregnant women from multiple ethnic groups attended four separate study visits spanning the three trimesters...
April 10, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28376799/new-association-of-bone-morphogenetic-protein-4-concentrations-with-fat-distribution-in-obesity-and-exenatide-intervention-on-it
#9
Xingchun Wang, Jiaqi Chen, Liang Li, Cui Ling Zhu, Jingyang Gao, Sharvan Rampersad, Le Bu, Shen Qu
BACKGROUND: Bone morphogenetic protein 4 (BMP-4) has been proven to regulate white adipogensis. We aimed to demonstrate the correlation of BMP-4 with fat distribution and Exenatide treatment on it. METHODS: We enrolled 69 obese patients. Anthropometric and metabolic indexes were collected. Fat distribution was measured by dual-energy X-ray absorptiometry. BPM-4 levels were assessed using enzyme-link immunosorbent assay kit. 30 obese patients were treated with Exenatide twice a day...
April 4, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28376489/triiodothyronine-potentiates-vasorelaxation-via-pkg-vasp-signaling-in-vascular-smooth-muscle-cells
#10
Sherin Samuel, Kuo Zhang, Yi-Da Tang, A Martin Gerdes, Maria Alicia Carrillo-Sepulveda
BACKGROUND/AIMS: Vascular relaxation caused by Triiodothyronine (T3) involves direct activation of endothelial cells (EC) and vascular smooth muscle cells (VSMC). Activation of protein kinase G (PKG) has risen as a novel contributor to the vasorelaxation mechanism triggered by numerous stimuli. We hypothesize that T3-induced vasorelaxation involves PKG/vasodilator-stimulated phosphoprotein (VASP) signaling pathway in VSMC. METHODS: Human aortic endothelial cells (HAEC) and VSMC were treated with T3 for short (2 to 60 minutes) and long term (24 hours)...
April 4, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28374508/free-triiodothyronine-free-thyroxine-ratio-rather-than-thyrotropin-is-more-associated-with-metabolic-parameters-in-healthy-euthyroid-adult-subjects
#11
So Young Park, Se Eun Park, Sang Won Jung, Hyun Seok Jin, Ie Byung Park, Song Vogue Ahn, Sihoon Lee
OBJECTIVE: The interrelation between TSH, thyroid hormones, and metabolic parameters is complex and has not been confirmed. This study aimed to determine the association of TSH and thyroid hormones in euthyroid subjects and the relationship between thyroid function and metabolic risk factors. Furthermore, this study examined whether thyroid function has predictive power for metabolic syndrome. DESIGN: This is a cross-sectional study that included subjects in a medical health check-up program at a single institution...
April 4, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28372300/thyroid-hormone-disorders-and-sepsis
#12
Bin Luo, Zhui Yu, Yinping Li
Sepsis is a systemic inflammatory response syndrome with high mortality, which results from severe infection and can lead to secondary organ dysfunction. It is one of the most common cause of death in intensive care unit. Clinical reports have shown that sepsis was often accompanied by thyroid dysfunction, which is called "low triiodothyronine (T3)" syndrome and characterized by decreased blood total T3 and free T3, and by normal or decreased thyroxine (T4) and thyroid stimulating hormone (TSH). This syndrome may greatly affect the prognosis of patients with sepsis...
2017: Bio-medical Materials and Engineering
https://www.readbyqxmd.com/read/28365894/gene-expression-analysis-and-microdialysis-suggest-hypothalamic-triiodothyronine-t3-gates-daily-torpor-in-djungarian-hamsters-phodopus-sungorus
#13
Jonathan H H Bank, Ceyda Cubuk, Dana Wilson, Eddy Rijntjes, Julia Kemmling, Hanna Markovsky, Perry Barrett, Annika Herwig
Thyroid hormones play an important role in regulating seasonal adaptations of mammals. Several studies suggested that reduced availability of 3,3',5-triiodothyronine (T3) in the hypothalamus is required for the physiological adaptation to winter in Djungarian hamsters. We have previously shown that T3 is involved in the regulation of daily torpor, but it remains unclear, whether T3 affects torpor by central or peripheral mechanisms. To determine the effect of T3 concentrations within the hypothalamus in regulating daily torpor, we tested the hypothesis that low hypothalamic T3 metabolism would favour torpor and high T3 concentrations would not...
April 1, 2017: Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology
https://www.readbyqxmd.com/read/28358726/local-delivery-of-thyroid-hormone-enhances-oligodendrogenesis-and-myelination-after-spinal-cord-injury
#14
Robert B Shultz, Zhicheng Wang, Jia Nong, Zhiling Zhang, Yinghui Zhong
OBJECTIVE: Traumatic spinal cord injury (SCI) causes apoptosis of myelin-forming oligodendrocytes (OLs) and demyelination of surviving axons, resulting in conduction failure. Remyelination of surviving denuded axons provides a promising therapeutic target for spinal cord repair. While cell transplantation has demonstrated efficacy in promoting remyelination and functional recovery, the lack of ideal cell sources presents a major obstacle to clinical application. The adult spinal cord contains oligodendrocyte precursor cells and multipotent neural stem/progenitor cells that have the capacity to differentiate into mature, myelinating OLs...
March 30, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28357106/persistent-arthralgia-vomiting-and-hypercalcemia-as-the-initial-manifestations-of-hyperthyroidism-a-case-report
#15
Jingfang Liu, Xulei Tang, Jianguo Cheng, Xiaomei Yang, Yan Wang
A 53-year-old woman presented with persistent edema and pain of the metacarpophalangeal and proximal interphalangeal joints and the wrist, knee and ankle joints, with more recent intermittent nausea and vomiting. Treatment for rheumatoid arthritis and osteoarthritis was ineffective. No clinical manifestations typical of hyperthyroidism were observed. The results of the thyroid function tests were as follows: Thyroid-stimulating hormone, 0.003 µIU/ml; triiodothyronine (T3), 4.44 ng/ml;, thyroxine (T4) >30 µg/dl; free T3, 14...
February 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28342348/circulating-thyroid-hormones-and-associated-metabolites-in-white-whales-delphinapterus-leucas-determined-using-isotope-dilution-mass-spectrometry
#16
Martin Hansen, Gro D Villanger, Thea Bechshoft, Milton Levin, Heli Routti, Kit M Kovacs, Christian Lydersen
Blood was sampled from nine free-ranging white whales (beluga whale, Delphinapterus leucas) from Svalbard, Norway during the summers of 2013 and 2014. Total concentrations of eleven thyroid hormones and metabolites were measured in serum using a novel liquid chromatography tandem mass spectrometry analytical method. Measurements of these compounds in plasma gave the same results as in serum. The three hormones found in highest concentrations were 3,3',5-triiodothyronine (T3), 3,3',5'-triiodothyronine (rT3) and thyroxine (T4)...
March 22, 2017: Environmental Research
https://www.readbyqxmd.com/read/28337437/bioengineering-approaches-to-mature-human-pluripotent-stem-cell-derived-cardiomyocytes
#17
REVIEW
Xuetao Sun, Sara S Nunes
Human pluripotent stem cell-derived cardiomyocytes (hPSC-CM) represent a potential unlimited cell supply for cardiac tissue engineering and possibly regenerative medicine applications. However, hPSC-CMs produced by current protocols are not representative of native adult human cardiomyocytes as they display immature gene expression profile, structure and function. In order to improve hPSC-CM maturity and function, various approaches have been developed, including genetic manipulations to induce gene expression, delivery of biochemical factors, such as triiodothyronine and alpha-adrenergic agonist phenylephrine, induction of cell alignment in 3D tissues, mechanical stress as a mimic of cardiac load and electrical stimulation/pacing or a combination of these...
2017: Frontiers in Cell and Developmental Biology
https://www.readbyqxmd.com/read/28333900/-the-influence-of-hypothyroidism-on-the-conversion-and-binding-of-thyroid-hormones-in-patients-with-end-stage-renal-disease
#18
Iwanna Dubczak, Longin Niemczyk, Zbigniew Bartoszewicz, Katarzyna Szamotulska, Marek Saracyn, Stanisław Niemczyk
Hypothyroidism in patients with renal failure (RF) causes many metabolic and clinical problems, and both these diseases can mutually exacerbate their disturbances. AIM: The aim of this study was to evaluate the effect of hypothyroidism, and end-stage renal disease (ESRD) on conversion of thyroid hormones (TH) in patients with ESRD treated with chronic hemodialysis (HD). MATERIALS AND METHODS: The study was performed in 74 patients, including 41 women (K) and 33 men (M) aged 28-83 y...
March 21, 2017: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/28327686/thyroid-hormone-profile-in-patients-with-chronic-kidney-disease-a-single-centre-study
#19
S Singh, A Verma, G Aryal, S Thapa, S Khakurel, K Shrestha
BACKGROUND: Chronic kidney disease (CKD) is a global burden and now recognized as a major public health problem worldwide. Patients with CKD have alteration in thyroid hormone metabolism. This study aims to evaluate the status of thyroid hormone profile in different stages of CKD. METHODS: The cross-sectional study included 103 CKD patients attending Nephrology and Dialysis unit of KIST Medical College Teaching Hospital, Lalitpur, Nepal. Serum creatinine, free triiodothyronine (fT3), free thyroxine (fT4), and thyroid stimulating hormone (TSH) were measured...
September 2016: Journal of Nepal Health Research Council
https://www.readbyqxmd.com/read/28327186/clinical-behavioural-and-pharmacogenomic-factors-influencing-the-response-to-levothyroxine-therapy-in-patients-with-primary-hypothyroidism-protocol-for-a-systematic-review
#20
Rosie Dew, Onyebuchi Okosieme, Colin Dayan, Vinay Eligar, Ishrat Khan, Salman Razvi, Simon Pearce, Scott Wilkes
BACKGROUND: Suboptimal thyroid hormone therapy including under-replacement and over-replacement is common amongst patients with hypothyroidism. This is a significant health concern as affected patients are at risk of adverse cardiovascular or metabolic consequences. Despite a growing body of evidence on the effects of various factors on thyroid hormone replacement, a systematic appraisal of the evidence is lacking. This review aims to appraise and quantify the extent to which clinical, behavioural and pharmacogenomic factors affect levothyroxine therapy in patients with primary hypothyroidism...
March 21, 2017: Systematic Reviews
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