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Triiodothyronine

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https://www.readbyqxmd.com/read/29457831/low-t3-syndrome-as-a-predictor-of-poor-prognosis-in-chronic-lymphocytic-leukemia
#1
Rui Gao, Rui-Ze Chen, Yi Xia, Jin-Hua Liang, Li Wang, Hua-Yuan Zhu, Jia-Zhu Wu, Lei Fan, Jian-Yong Li, Tao Yang, Wei Xu
Low triiodothyronine (T3) state is associated with poor prognosis in critical acute and prolonged illness. However, the information on thyroid dysfunction and cancer is limited. The aim of our study was to evaluate the prognostic value of low T3 syndrome in chronic lymphocytic leukemia (CLL). Two hundred and fifty-eight patients with detailed thyroid hormone profile at CLL diagnosis were enrolled. Low T3 syndrome was defined by low free T3 (FT3) level accompanied by normal-to-low free tetraiodothyronine (FT4) and thyroid-stimulating hormone (TSH) levels...
February 19, 2018: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29453818/the-association-between-thyroid-function-and-incidence-of-metabolic-syndrome-in-euthyroid-subjects-tianjin-chronic-low-grade-systemic-inflammation-and-health-cohort-study
#2
Yeqing Gu, Yanyan Wang, Qing Zhang, Li Liu, Ge Meng, Zhanxin Yao, Hongmei Wu, Yang Xia, Xue Bao, Hongbin Shi, Honglei Wang, Shaomei Sun, Xing Wang, Ming Zhou, Qiyu Jia, Kun Song, Kaijun Niu
OBJECTIVE: Thyroid hormones (THs) are primarily responsible for the regulation of energy homeostasis and metabolism. However, few prospective studies have assessed the association between THs and metabolic syndrome (MetS) in a general population. We therefore designed a cohort study to examine whether serum THs levels within the reference range are predictive factors for developing MetS in adults. DESIGN: Prospective cohort study. PARTICIPANTS: A prospective study (n=6,119) was performed in Tianjin, China...
February 17, 2018: Clinical Endocrinology
https://www.readbyqxmd.com/read/29452393/no-copper-supplementation-in-a-corn-soybean-basal-diet-has-no-adverse-effects-on-late-phase-laying-hens-under-normal-and-cyclic-high-temperatures
#3
W X Li, Y Q Chen, L H Zhao, Q G Ma, J Y Zhang, C Ji
Over supplementation of copper (Cu) in animal diets may cause serious pollution in soil, water and harvested crops. To minimize the potential pollution, the effects of corn-soybean basal diet with or without supplementation of 8 mg Cu/kg on laying performance, plasma biochemical metabolic indices, and antioxidant status in laying hens were evaluated under normal and cyclic high temperatures. A total of 240 Hy-Line Brown laying hens were randomly allotted to 4 treatments with 6 replicates of 10 hens per replicate according to factorial design involved in 2 temperatures [normal temperature (NT) vs...
February 14, 2018: Poultry Science
https://www.readbyqxmd.com/read/29445858/l-thyroxine-intake-as-a-potential-risk-factor-for-the-development-of-fatigue-in-breast-cancer-patients-undergoing-chemotherapy
#4
Martina E Schmidt, Joachim Wiskemann, Theron Johnson, Nina Habermann, Andreas Schneeweiss, Karen Steindorf
PURPOSE: L-Thyroxine is one of the most commonly prescribed drugs and accordingly used by many breast cancer patients with thyroid disorders. Hence, potential interactions of chemotherapy with L-thyroxine, possibly contributing to fatigue, would be of high clinical relevance. Therefore, we investigated fatigue and underlying pathways in L-thyroxine-using breast cancer patients during chemotherapy. METHODS: Thyroid-stimulating hormone (TSH), L-triiodothyronine (T3), and diurnal salivary cortisol patterns were analyzed in breast cancer patients in the beginning and at the end of adjuvant chemotherapy within the control group (n = 41) of a randomized exercise intervention trial...
February 14, 2018: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
https://www.readbyqxmd.com/read/29440950/relationship-between-etanercept-and-thyroid-function-in-patients-with-psoriasis-vulgaris
#5
Iulia Ioana Roman, Teodora Mocan, Meda-Sandra Orasan, Elena Mihaela Jianu, Carmen-Angela Sfrangeu, Remus-Ioan Orasan
Background and aim: Psoriasis vulgaris, a chronic inflammatory skin disease, requires a long term medication, in order to avoid relapsing episodes. TNF-alpha, one of the targeted molecule in psoriasis therapy, seems to be also involved in thyroid disorders etiopathogenesis. The aim of this study was to evaluate the relationship between anti TNF-alpha therapy and thyroid parameters: serum level of triiodothyronine (T3), free thyroxine (FT4), thyroid-stimulating hormone (TSH) and antithyroidperoxidase antibody (AbTPO) in psoriasis treated population...
2018: Clujul Medical (1957)
https://www.readbyqxmd.com/read/29440273/relationship-between-the-dimerization-of-thyroglobulin-and-its-ability-to-form-triiodothyronine
#6
Cintia E Citterio, Yoshiaki Morishita, Nada Dakka, Balaji Veluswamy, Peter Arvan
Thyroglobulin (TG) is the most abundant thyroid gland protein, a dimeric iodoglycoprotein (660 kDa). TG serves as the protein precursor in the synthesis of thyroid hormones tetraiodothyronine (T4) and triiodothyronine (T3). The primary site for T3 synthesis in TG involves an iodotyrosine acceptor at the antepenultimate Tyr residue (at the extreme carboxyl-terminus of the protein). The carboxyl-terminal region of TG is comprised of the CholinEsterase-Like (ChEL) domain followed by a short unique tail sequence...
February 12, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29438900/sperm-quality-biomarkers-complement-reproductive-and-endocrine-parameters-in-investigating-environmental-contaminants-in-common-carp-cyprinus-carpio-from-the-lake-mead-national-recreation-area
#7
Jill A Jenkins, Michael R Rosen, Rassa O Draugelis-Dale, Kathy R Echols, Leticia Torres, Carla M Wieser, Constance A Kersten, Steven L Goodbred
Lake Mead National Recreational Area (LMNRA) serves as critical habitat for several federally listed species and supplies water for municipal, domestic, and agricultural use in the Southwestern U.S. Contaminant sources and concentrations vary among the sub-basins within LMNRA. To investigate whether exposure to environmental contaminants is associated with alterations in male common carp (Cyprinus carpio) gamete quality and endocrine- and reproductive parameters, data were collected among sub-basins over 7 years (1999-2006)...
February 10, 2018: Environmental Research
https://www.readbyqxmd.com/read/29436670/hypothyroidism-increases-cyclooxygenase-2-levels-and-pro-inflammatory-response-and-decreases-cell-proliferation-and-neuroblast-differentiation-in-the-hippocampus
#8
Sung Min Nam, Jong Whi Kim, Dae Young Yoo, Hyo Young Jung, Jin Young Chung, Dae Won Kim, In Koo Hwang, Yeo Sung Yoon
The present study investigated the effects of hypothyroidism on cyclooxygenase-2 (COX-2) and pro‑inflammatory cytokines in the dentate gyrus to elucidate the roles of COX‑2 in the hypothyroid hippocampus. Hypothyroidism was induced in rats by treating with 0.03% 2‑mercapto‑1‑methyl‑imidazole dissolved in drinking water for 5 weeks. The animals were sacrificed at 12 weeks of age. Hypothyroidism rats exhibited decreased triiodothyronine and thyroxine levels in the serum, while the levels of thyroid‑stimulating hormone and the weight of thyroid glands were significantly higher in the hypothyroid rats compared with those in the vehicle‑treated group...
February 13, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29432471/in-vitro-mouse-spermatogenesis-with-an-organ-culture-method-in-chemically-defined-medium
#9
Hiroyuki Sanjo, Mitsuru Komeya, Takuya Sato, Takeru Abe, Kumiko Katagiri, Hiroyuki Yamanaka, Yoko Ino, Noriaki Arakawa, Hisashi Hirano, Tatsuma Yao, Yuta Asayama, Akio Matsuhisa, Masahiro Yao, Takehiko Ogawa
We previously reported the successful induction and completion of mouse spermatogenesis by culturing neonatal testis tissues. The culture medium consisted of α-minimum essential medium (α-MEM), supplemented with Knockout serum replacement (KSR) or AlbuMAX, neither of which were defined chemically. In this study, we formulated a chemically defined medium (CDM) that can induce mouse spermatogenesis under organ culture conditions. It was found that bovine serum albumin (BSA) purified through three different procedures had different effects on spermatogenesis...
2018: PloS One
https://www.readbyqxmd.com/read/29428703/the-contribution-of-total-and-free-iodothyronines-to-welfare-maintenance-and-management-stress-coping-in-ruminants-and-equines-physiological-ranges-and-reference-values
#10
REVIEW
Adriana Ferlazzo, Cristina Cravana, Esterina Fazio, Pietro Medica
In order to acquire a pattern of thyroid involvement in welfare maintenance in Ruminants and Equines, this review summarizes data concerning the reference values of total and free iodothyronines and their modifications in physiological conditions and in different management conditions (pregnancy, lactation, weaning, growth, isolation, restraint, shearing, confinement and transportation). Thyroidal and extrathyroidal tissues efficiently respond to management practices, giving a differentiated contribution to circulating iodothyronine changes...
February 2, 2018: Research in Veterinary Science
https://www.readbyqxmd.com/read/29427748/the-non-thyroidal-illness-syndrome-is-associated-with-postoperative-surgical-site-infections-in-enterocutaneous-fistulae
#11
Huajian Ren, Jianan Ren, Gefei Wang, Zhiwu Hong, Guosheng Gu, Jun Chen, Xiuwen Wu, Qiongyuan Hu, Guanwei Li
BACKGROUND: Non-thyroidal illness syndrome (NTIS) is common in critically ill patients and associated with adverse outcomes. Many enterocutaneous fistula (ECF) patients still suffer NTIS prior to definitive surgery. This study was designed to explore the association between preoperative NTIS and postoperative outcomes in ECF patients. METHODS: A total of 264 ECF patients who underwent definitive surgery from April 2014 to November 2016 were studied. Thyroid hormones were tested for each patient before surgery, and the patients were divided into two groups (NTIS group and euthyroid group) according to the presence of NTIS...
February 7, 2018: International Journal of Surgery
https://www.readbyqxmd.com/read/29427633/estimation-of-energetic-condition-in-wild-baboons-using-fecal-thyroid-hormone-determination
#12
Laurence R Gesquiere, Mya Pugh, Susan C Alberts, A Catherine Markham
Understanding how environmental and social factors affect reproduction through variation in energetic condition remains understudied in wild animals, in large part because accurately and repeatedly measuring energetic condition in the wild is a challenge. Thyroid hormones (THs), such as triiodothyronine (T3) and thyroxine (T4), have a key role in mitigating metabolic responses to energy intake and expenditure, and therefore are considered important biomarkers of an animal's energetic condition. Recent method development has shown that T3 and T4 metabolites can be measured in feces, but studies measuring THs in wild populations remain rare...
February 7, 2018: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/29426025/a-cross-sectional-study-of-urinary-phthalates-phenols-and-perchlorate-on-thyroid-hormones-in-us-adults-using-structural-equation-models-nhanes-2007-2008
#13
Jennifer Przybyla, G John Geldhof, Ellen Smit, Molly L Kile
BACKGROUND: Biomonitoring data shows that people are exposed to phthalates, phenols and perchlorates. Many of these compounds are endocrine disrupting compounds that affect thyroid hormone levels. Yet the effect of these compounds on thyroid hormone levels are often evaluated individually rather than as a mixture. Our objective was to examine the association between 11 urinary endocrine disrupting compounds and thyroid hormones using structural equation models. METHODS: Using data from the National Health and Nutrition and Examination Survey 2007-2008, we fit a latent variable utilizing urinary measurements of 9 compounds in females (perchlorate, bisphenol A, benzophenone-3, mono-2ethyl5carboxypentyl phthalate, mono-n-butyl phthalate, mono-(3-carboxypropyl) phthalate, mono(2ethyl5hydroxyhexyl) phthalate, mono-benzyl phthalate, and mono-isobutyl phthalate) and 8 compounds in males (without benzophenone-3)...
February 6, 2018: Environmental Research
https://www.readbyqxmd.com/read/29422822/thyroid-function-and-thyroid-autoantibodies-in-patients-with-chronic-spontaneous-urticaria
#14
Magdalena Czarnecka-Operacz, Anna Sadowska-Przytocka, Dorota Jenerowicz, Anna Szeliga, Zygmunt Adamski, Katarzyna Łącka
Introduction: Chronic urticaria (CU) is a skin disease caused by autoantibodies against high affinity immunoglobulin E (IgE) receptor and against IgE. It is characterized by hives, erythematous wheals and redness present minimum twice a week for at least 6 weeks. It is observed that there is a strong association between CU and autoimmune diseases, such as autoimmune thyroiditis (AT). Aim: To verify the frequency of AT in patients suffering from chronic spontaneous urticaria (CSU) and to confirm the coexistence of CU and AT in the Polish population...
December 2017: Postȩpy Dermatologii i Alergologii
https://www.readbyqxmd.com/read/29417848/triiodothyronine-stimulates-vegf-expression-and-secretion-via-steroids-and-hif-1%C3%AE-in-murine-leydig-cells
#15
Bodhana Dhole, Surabhi Gupta, Senthil Kumar Venugopal, Anand Kumar
Leydig cells are the principal steroidogenic cells of the testis. Leydig cells also secrete a number of growth factors including vascular endothelial growth factor (VEGF) which has been shown to regulate both testicular steroidogenesis and spermatogenesis. The thyroid hormone, T3, is known to stimulate steroidogenesis in Leydig cells. T3 has also been shown to stimulate VEGF production in a variety of cell lines. However, studies regarding the effect of T3 on VEGF synthesis and secretion by the Leydig cells were lacking...
February 8, 2018: Systems Biology in Reproductive Medicine
https://www.readbyqxmd.com/read/29417398/effects-of-central-fgf21-infusion-on-the-hypothalamus-pituitary-thyroid-axis-and-energy-metabolism-in-rats
#16
Umit Yilmaz, Suat Tekin, Mehmet Demir, Yilmaz Cigremis, Suleyman Sandal
The aim of this study was to evaluate the impact of intracerebroventricular chronic fibroblast growth factor 21 (FGF21) infusion on hypothalamic-pituitary-thyroid (HPT) axis, energy metabolism, food intake and body weight. Thirty male Wistar albino rats were used and divided into three groups including control, sham (vehicle) and FGF21 infused groups (n = 10). Intracerebroventricularly, FGF21 and vehicle groups were infused for 7 days with FGF21 (0.72 µg/day) and artificial cerebrospinal fluid, respectively...
February 7, 2018: Journal of Physiological Sciences: JPS
https://www.readbyqxmd.com/read/29409039/the-affinity-of-brominated-phenolic-compounds-for-human-and-zebrafish-thyroid-receptor-%C3%AE-influence-of-chemical-structure
#17
Erin M Kollitz, Lauren De Carbonnel, Heather M Stapleton, P Lee Ferguson
Brominated phenolic compound (BPCs) are found in the environment, and in human and wildlife tissues, and some are considered to have endocrine disrupting activities. The goal of this study was to determine how structural differences of three BPC classes impact binding affinities for the thyroid receptor beta (TRβ) in humans and zebrafish. BPC classes included halogenated bisphenol A (BPA) derivatives, halogenated oxidative transformation products of 2,2',4,4'-tetrabromodiphenyl ether (BDE-47), and brominated phenols...
February 2, 2018: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/29408972/subclinical-hypothyroidism-and-incident-depression-in-young-and-middle-age-adults
#18
Ji Sun Kim, Yiyi Zhang, Yoosoo Chang, Seungho Ryu, Eliseo Guallar, Young-Chul Shin, Hocheol Shin, Se-Won Lim, Juhee Cho
Background: The role of subclinical hypothyroidism in the development of depression remains controversial. We examined the prospective association between subclinical hypothyroidism and incident depressive symptoms. Methods: We conducted a prospective cohort study in 220,545 middle age adults without depression who underwent at least 2 comprehensive health exams between January 1, 2011 and December 31, 2014. Thyroid-stimulating hormone (TSH), free triiodothyronine (FT3) and free thyroxin (FT4) levels were measured by an electrochemiluminescent immunoassay...
February 2, 2018: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29407440/thyroid-hormone-in-the-cns-contribution-of-neuron-glia-interaction
#19
Mami Noda
The endocrine system and the central nervous system (CNS) are intimately linked. Among hormones closely related to the nervous system, thyroid hormones (THs) are critical for the regulation of development and differentiation of neurons and neuroglia and hence for development and function of the CNS. T3 (3,3',5-triiodothyronine), an active form of TH, is important not only for neuronal development but also for differentiation of astrocytes and oligodendrocytes, and for microglial development. In adult brain, T3 affects glial morphology with sex- and age-dependent manner and therefore may affect their function, leading to influence on neuron-glia interaction...
2018: Vitamins and Hormones
https://www.readbyqxmd.com/read/29406830/triiodothyronine-attenuates-the-progression-of-renal-injury-in-a-rat-model-of-chronic-kidney-disease
#20
Sahar Mohamed El Agaty
This study was designed to investigate whether and how triiodothyronine (T3) affects renal function in an experimental model of chronic kidney disease. Twenty four female rats were divided into: sham operated control group (n=8) , 5/6 nephrectomized group (Nx, n=8) and 5/6 nephrectomized group treated with T3 for 2 weeks (T3-Nx, n=8). T3 administration significantly decreased serum levels of urea, creatinine, tumour necrosis factor alpha, and interleukin-6 compared to Nx group. The levels of malondialdehyde , transforming growth factor beta, fibronectin, and collagen IV as well as the expression of inducible nitric oxide synthase, nuclear factor kappa B, poly ADP ribose polymerase, caspase-3 and Bax all were significantly decreased , though not normalized, in the remnant kidney of T3-Nx group compared to Nx rats...
February 6, 2018: Canadian Journal of Physiology and Pharmacology
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