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The role of iodine

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https://www.readbyqxmd.com/read/28724406/iodine-concentration-calculated-by-dual-energy-computed-tomography-dect-as-a-functional-parameter-to-evaluate-thyroid-metabolism-in-patients-with-hyperthyroidism
#1
Duong Duc Binh, Takahito Nakajima, Hidenori Otake, Tetsuya Higuchi, Yoshito Tsushima
BACKGROUND: Thyroid function in patients with Grave's disease is usually evaluated by thyroid scintigraphy with radioactive iodine. Recently, dual-energy computed tomography (DECT) with two different energy X-rays can calculate iodine concentrations and can be applied for iodine measurements in thyroid glands. This study aimed to assess the potential use of DECT for the functional assessment of the thyroid gland. METHODS: Thirteen patients with Grave's disease treated at our hospital from May to September 2015 were included in this retrospective study...
July 19, 2017: BMC Medical Imaging
https://www.readbyqxmd.com/read/28720593/vitamin-a-endocrine-tissues-and-hormones-interplay-and-interactions
#2
Julie Brossaud, Veronique Pallet, Jean-Benoit Corcuff
Vitamin A (retinol) is a micronutrient critical for cell proliferation and differentiation. In adults, vitamin A and metabolites such as retinoic acid (RA) play major roles in vision, immune and brain functions, and tissue remodelling and metabolism. This review presents the physiological interactions of retinoids and endocrine tissues and hormonal systems. Two endocrine systems have been particularly studied. In the pituitary, retinoids targets the corticotrophs with a possible therapeutic use in corticotropinomas...
July 18, 2017: Endocrine Connections
https://www.readbyqxmd.com/read/28718179/genetic-alterations-in-pendrin-slc26a4-gene-in-adult-hypothyroid-patients
#3
Sourav Mukherjee, Manalee Guha, Bidisha Adhikary, Biswabandhu Bankura, Pubali Mitra, Subhankar Chowdhury, Madhusudan Das
Current study was aimed to screen the SLC26A4 gene in 127 nonautoimmune and noncongenital hypothyroid patients, who were under optimal iodine nutrition and devoid of any characteristics of Pendred syndrome from eastern part of Indian population. 8 single nucleotide variants/mutations were identified in heterozygous state in 20% patient population, which include 1 novel nonsynonymous (p.C18S), 1 novel intronic (g.942C>A), 3 known nonsynonymous (p.S23X, p.V239D, and p.I455F), and 3 known intronic (g.23034G>T, g...
July 17, 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/28712279/the-role-of-adjuvant-external-beam-radiation-therapy-for-papillary-thyroid-carcinoma-invading-the-trachea
#4
Young Suk Kim, Jae Hyuck Choi, Kwang Sik Kim, Gil Chae Lim, Jeong Hong Kim, Ju Wan Kang, Hee-Sung Song, Sang Ah Lee, Chang Lim Hyun, Yunseon Choi, Gwi Eon Kim
PURPOSE: To evaluate the effect of adjuvant external beam radiation therapy (EBRT) on local failure-free survival rate (LFFS) for papillary thyroid cancer (PTC) invading the trachea. MATERIALS AND METHODS: Fifty-six patients with locally advanced PTC invading the trachea were treated with surgical resection. After surgery, 21 patients received adjuvant EBRT and radioactive iodine therapy (EBRT group) and 35 patients were treated with radioactive iodine therapy (control group)...
June 2017: Radiation Oncology Journal
https://www.readbyqxmd.com/read/28712072/clinical-role-of-guidance-by-c-arm-ct-for-125-i-brachytherapy-on-pulmonary-tumors
#5
Dechao Jiao, Kewei Ren, Zongming Li, Shaofeng Shui, Xinwei Han
PURPOSE: To evaluate the clinical value of C-arm CT (CACT)-guided interstitial iodine-125 ((125)I) brachytherapy on pulmonary tumors. MATERIALS AND METHODS: 30 patients with 40 solid pulmonary tumors were enrolled to undergo CACT-guided interstitial (125)I brachytherapy between November 2011 and November 2014. The needle path was planned on a CACT virtual navigation and real-time fluoroscopy system. Technical success, puncture score, procedure time, local control rate (LCR), radiation exposure, complications and survival were investigated...
July 15, 2017: La Radiologia Medica
https://www.readbyqxmd.com/read/28707872/povidone-iodine-based-polymeric-nanoparticles-for-antibacterial-applications
#6
Tianyi Gao, Hongbo Fan, Xinjie Wang, Yangyang Gao, Wenxin Liu, Wanjun Chen, Alideertu Dong, Yan-Jie Wang
As microbial contamination is becoming more and more serious, antibacterial agents play an important role in preventing and removing bacterial pathogens from microbial pollution in our daily life. To solve water solubility and antibacterial stability of PVP-I2 as a strong antibacterial agent, we successfully obtain hydrophobic povidone-iodine nanoparticles (povidone-iodine NPs) by a two-step method related to the advantage of nanotechnology. Firstly, the synthesis of poly(N-vinyl-2-pyrrolidone-co-methyl methacrylate) nanoparticles, i...
July 14, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28698763/wolf-s-panniculitis
#7
Anastasiya Atanasova Chokoeva, Georgi Tchernev
A 28-year-old male patient, presented with a one-week history of pain and itching on the skin of the left upper leg. Erythematous indurated, warm and painful on palpation, subcutaneous plaques and nodules were clinically observed, affecting the skin of the left upper leg, within a recent black-wolf tattoo. The diagnosis of traumatic panniculitis with superposed bacterial infection, provoked by a wolf tattoo was made. The patient underwent 7-days systemic antibiotic treatment regimen and topical application of iodine povidone unguent under occlusion for 7 days...
June 15, 2017: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28693291/diagnostic-clue-of-nodular-fasciitis-mimicking-metastasis-in-papillary-thyroid-cancer-mismatching-findings-on-18-f-fdg-pet-ct-and-123-i-whole-body-scan-a-case-report
#8
Minjung Seo, Misung Kim, Eun Sook Kim, Hongbo Sim, Sungmin Jun, Seol Hoon Park
This study reports a case of nodular fasciitis incidentally detected in a patient with papillary thyroid cancer. A 47-year-old woman underwent a total thyroidectomy and radioactive iodine therapy for papillary thyroid cancer. On a follow-up fluorodeoxyglucose ((18)F-FDG) PET/computed tomography (CT) scan after 12 months, a focal (18)F-FDG-avid lesion was incidentally detected in the paraspinal muscle. It was well-enhanced on CT and magnetic resonance imaging, indicating metastasis. However, the lesion was not iodine avid on the (123)I whole body scan, which favored benign etiology over metastasis from thyroid cancer...
July 2017: Oncology Letters
https://www.readbyqxmd.com/read/28692086/the-role-of-o-1-d-in-the-oxidation-mechanism-of-ethylene-by-iodosobenzene-and-other-hypervalent-molecules
#9
Shahriar N Khan, Evangelos Miliordos
The role of the first excited state of oxygen ((1)D) is proven essential for the description of terminal iodine-oxygen chemical bonds. The description of the I-O bond as a dative one from iodine to O((1)D) provides a simple and accurate picture which explains the oxidation properties of iodosobenzene and similar in nature molecules.
July 10, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28687430/management-of-the-lateral-neck-in-well-differentiated-thyroid-cancer
#10
REVIEW
J R Cracchiolo, R J Wong
Lateral neck lymph node metastases in well differentiated thyroid cancer are common, ranging from 30% to 60%, with the majority of these foci identifiable only as microscopic deposits. A skilled ultrasound evaluation of the lymph nodes in the lateral neck is recommended for all patients presenting with newly diagnosed thyroid cancer undergoing surgical management. Ultrasound guided fine needle aspiration biopsy may be used to cytologically confirm suspected lateral neck nodal metastases prior to surgery. For patients with large volume nodal disease, extranodal extension, or multiple nodal metastases, computed tomography (CT) scan of the neck with contrast is an important additional imaging modality to accurately localize disease prior to surgery...
June 22, 2017: European Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28673593/boron-a-potential-goiterogen
#11
Elizaveta V Popova, Alexey A Tinkov, Olga P Ajsuvakova, Margarita G Skalnaya, Anatoly V Skalny
The iodine deficiency disorders (IDD) include a variety of disturbances such as decreased fertility, increased perinatal and infant mortality, impaired physical and intellectual development, mental retardation, cretinism, hypothyroidism, and endemic goiter (EG). The occurrence of the latter is determined by interplay between genetic and environmental factors. The major environmental factor is iodine status that is required for normal thyroid hormone synthesis. However, other factors like intake of micronutrients and goiterogens also have a significant impact...
July 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28665792/status-of-essential-elements-in-autism-spectrum-disorder-systematic-review-and-meta-analysis
#12
REVIEW
Amene Saghazadeh, Narges Ahangari, Kasra Hendi, Fatemeh Saleh, Nima Rezaei
Autism spectrum disorder (ASD) is a lifelong neurodevelopmental disorder that imposes heavy financial burden on governments and families of affected children. It is considered a multifactorial condition, where trace elements are among environmental factors that may contribute to ASD. Meanwhile, the between-study variance is high. The present systematic review was designed to investigate the difference in trace element measures between patients with ASD and control subjects. Meta-analyses showed that the hair concentrations of chromium (p=0...
June 29, 2017: Reviews in the Neurosciences
https://www.readbyqxmd.com/read/28652559/expression-of-thyroid-hormone-regulator-genes-in-the-yolk-sac-membrane-of-the-developing-chicken-embryo
#13
Hanny Cho Too, Mitsuhiro Shibata, Masato Yayota, Veerle M Darras, Atsushi Iwasawa
Thyroid hormones (THs) are essential for the correct development of nearly every structure in the body from the very early stages of development, yet the embryonic thyroid gland is not functional at these stages. To clarify the roles of the egg yolk as a source of THs, the TH content in the yolk and the expression of TH regulator genes in the yolk sac membrane were evaluated throughout the 21-day incubation period of chicken embryos. The yolk TH content (22.3 ng triiodothyronine and 654.7 ng thyroxine per total yolk on day 4 of incubation) decreased almost linearly along with development...
June 25, 2017: Journal of Reproduction and Development
https://www.readbyqxmd.com/read/28648509/pendred-syndrome
#14
REVIEW
Jean-Louis Wémeau, Peter Kopp
Pendred syndrome is an autosomal recessive disorder that is classically defined by the combination of sensorineural deafness/hearing impairment, goiter, and an abnormal organification of iodide with or without hypothyroidism. The hallmark of the syndrome is the impaired hearing, which is associated with inner ear malformations such as an enlarged vestibular aqueduct (EVA). The thyroid phenotype is variable and may be modified by the nutritional iodine intake. Pendred syndrome is caused by biallelic mutations in the SLC26A4/PDS gene, which encodes the multifunctional anion exchanger pendrin...
March 2017: Best Practice & Research. Clinical Endocrinology & Metabolism
https://www.readbyqxmd.com/read/28644529/reciprocal-cooperation-of-phytochemicals-and-micronutrients-against-typical-and-atypical-forms-of-borrelia-spp
#15
Anna Goc, Alexandra Niedzwiecki, Matthias Rath
AIMS: Borrelia spp., a causative pathogenic factor of Lyme disease, has become a major public health threat. Current treatments based on antibiotics often lead to relapse after their withdrawal. Naturally derived substances that could work synergistically to display higher efficacy compared to the individual components may serve as a resource for the development of novel approaches to combat both active and latent forms of Borrelia spp. METHODS AND RESULTS: Using checkerboard assay, we investigated the anti-borreliae reciprocal cooperation of phytochemicals and micronutrients against two species of Borrelia selected as prevalent causes of Lyme disease in the US and Europe...
June 23, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28637564/do-iodine-impregnated-adhesive-surgical-drapes-reduce-surgical-site-infections-during-open-ventral-hernia-repair-a-comparative-analysis
#16
Neal Moores, Steven Rosenblatt, Ajita Prabhu, Michael Rosen
This study evaluated the role of iodine-impregnated adhesive drapes to reduce surgical site infections and occurrences in open ventral hernia repairs. All patients undergoing open ventral hernia repair of clean wounds with a retromuscular repair using synthetic mesh by a single surgeon were prospectively evaluated from the American Hernia Society Quality Collaborative. Patients were divided into those that had an Ioban drape and those that did not. The primary endpoints of this study were postoperative surgical site occurrence and infections...
June 1, 2017: American Surgeon
https://www.readbyqxmd.com/read/28637498/incidence-of-thyroid-dysfunction-in-an-iranian-adult-population-the-predictor-role-of-thyroid-autoantibodies-results-from-a-prospective-population-based-cohort-study
#17
Ashraf Aminorroaya, Rokhsareh Meamar, Massoud Amini, Awat Feizi, Azamosadat Tabatabae, Elham Faghih Imani
BACKGROUND: The prevalence of thyroid dysfunction is high in Isfahan, an area of iodine sufficient in Iran. The aim of this study is to investigate the incidence of thyroid dysfunctions in adults of metropolitan Isfahan and to determine the role of thyroid autoantibodies. METHODS: In a population-based cohort study in 2006-2011, we measured TSH, T4, T3, thyroid peroxidase antibody (TPOAb), and thyroglobulin antibody (TgAb) in 618 out of 2254 people who were euthyroid in 2006...
June 21, 2017: European Journal of Medical Research
https://www.readbyqxmd.com/read/28635633/new-insights-in-thyroid-cancer-and-p53-family-proteins
#18
REVIEW
Livia Manzella, Stefania Stella, Maria Stella Pennisi, Elena Tirrò, Michele Massimino, Chiara Romano, Adriana Puma, Martina Tavarelli, Paolo Vigneri
Thyroid cancers are common endocrine malignancies that comprise tumors with different clinical and histological features. Indeed, papillary and follicular thyroid cancers are slow-growing, well-differentiated tumors, whereas anaplastic thyroid cancers are undifferentiated neoplasias that behave much more aggressively. Well-differentiated thyroid carcinomas are efficiently cured by surgery and radioiodine, unlike undifferentiated tumors that fail to uptake radioactive iodine and are usually resistant to chemotherapy...
June 21, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28633507/digenic-duox1-and-duox2-mutations-in-cases-with-congenital-hypothyroidism
#19
Zehra Aycan, Hakan Cangul, Marina Muzza, Veysel N Bas, Laura Fugazzola, V Krishna Chatterjee, Luca Persani, Nadia Schoenmakers
Context: The DUOX2 enzyme generates hydrogen peroxide (H2O2), a crucial electron acceptor for the TPO-catalyzed iodination and coupling reactions mediating thyroid hormone biosynthesis. DUOX2 mutations result in dyshormonogenetic Congenital Hypothyroidism (CH) which may be phenotypically heterogeneous, leading to the hypothesis that CH severity may be influenced by environmental factors (eg dietary iodine) and oligogenic modifiers (eg variants in the homologous NADPH-oxidase DUOX1). However, loss of function mutations in DUOX1 have not hitherto been described and its role in thyroid biology remains undefined...
June 16, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28627816/spectrophotometric-determination-of-selenium-through-triiodide-anion
#20
Otilia Bizerea-Spiridon, Radu Nartita, Alexandru F Rogobete, Adina Negrea, Ramona Stroescu, Teofana O Bizerea, Constantin Ilie, Otilia Marginean
BACKGROUND: Selenium is a chemical element found in the human body that plays a crucial role in its regulation. Depending on the concentration, it may have beneficial or have toxic effects. Selenium is incorporated as selenocysteine amino acid residue in selenoproteins which play an important role in many biological functions: anti-oxidant defense, regulation of the immune function and of the inflammatory response, metabolism of thyroid hormones, functioning of the central nervous system, biosynthesis of DNA and RNA, fertility, and reproduction...
May 1, 2017: Clinical Laboratory
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