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https://www.readbyqxmd.com/read/29760925/methimazole-induced-anca-associated-vasculitis-with-diffuse-alveolar-haemorrhage
#1
Naoki Arai, Kenji Nemoto, Shuji Oh-Ishi, Mizu Nonaka, Kenji Hayashihara, Takefumi Saito
Antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) caused by methimazole (MMI) is known to be relatively rare; therefore, the optimal therapeutic approach for these cases remains to be established. A 59-year-old man who was treated with MMI for a diagnosis of Graves' disease was referred to our hospital because of progressive haemoptysis. The patient was diagnosed with diffuse alveolar haemorrhage (DAH) secondary to AAV based on increased inflammatory reactions with positive myeloperoxidase-ANCA in the serum and the results of bronchoalveolar lavage fluid...
July 2018: Respirology Case Reports
https://www.readbyqxmd.com/read/29757110/massive-pleural-and-pericardial-effusion-due-to-hypothyroidism-in-a-patient-with-a-surgically-treated-thyroid-stimulating-hormone-producing-pituitary-adenoma
#2
Ji-Hoon Lee, MinA Park, Myung Jae Park, Yong Suk Jo
Hypothyroidism is relatively rare etiology of serositis with effusion, but massive pleural effusion is very unusual. This is a report of massive pleural effusion in patient taking methimazole after surgical resection of thyroid-stimulating hormone (TSH)-producing pituitary adenoma (TSHoma). The patient was clinically and biochemically hypothyroid and responded well to discontinuation of methimazole and thyroid hormone replacement therapy. When assessing patients with pleural effusion, we should not rely on laboratory test results alone, as a detailed medical history and thorough physical examination could be more useful...
May 14, 2018: Acta Clinica Belgica
https://www.readbyqxmd.com/read/29755326/transient-hypothyroidism-during-lactation-arrests-myelination-in-the-anterior-commissure-of-rats-a-magnetic-resonance-image-and-electron-microscope-study
#3
Federico S Lucia, Jesús Pacheco-Torres, Susana González-Granero, Santiago Canals, María-Jesús Obregón, José M García-Verdugo, Pere Berbel
Thyroid hormone deficiency at early postnatal ages affects the cytoarchitecture and function of neocortical and telencephalic limbic areas, leading to impaired associative memory and in a wide spectrum of neurological and mental diseases. Neocortical areas project interhemispheric axons mostly through the corpus callosum and to a lesser extent through the anterior commissure (AC), while limbic areas mostly project through the AC and hippocampal commissures. Functional magnetic resonance data from children with late diagnosed congenital hypothyroidism and abnormal verbal memory processing, suggest altered ipsilateral and contralateral telencephalic connections...
2018: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/29722569/exacerbated-liver-injury-of-antithyroid-drugs-in-endotoxin-treated-mice
#4
Reza Heidari, Fatemeh Ahmadi, Hamid Reza Rahimi, Negar Azarpira, Massood Hosseinzadeh, Asma Najibi, Hossein Niknahad
Drug-induced liver injury is a major concern in clinical studies as well as in post-marketing surveillance. Previous evidence suggested that drug exposure during periods of inflammation could increase an individual's susceptibility to drug hepatoxicity. The antithyroid drugs, methimazole (MMI) and propylthiouracil (PTU) can cause adverse reactions in patients, with liver as a usual target. We tested the hypothesis that MMI and PTU could be rendered hepatotoxic in animals undergoing a modest inflammation. Mice were treated with a nonhepatotoxic dose of LPS (100 µg/kg, i...
May 3, 2018: Drug and Chemical Toxicology
https://www.readbyqxmd.com/read/29708883/graves-disease-following-allogenic-hematopoietic-stem-cell-transplantation-for-severe-aplastic-anemia-case-report-and-literature-review
#5
Ahu Paketçi, Korcan Demir, Özlem Tüfekçi, Sezer Acar, Ayhan Abacı, Şebnem Yılmaz, Ece Böber
BACKGROUND: Similar autoimmune processes (defective T-cell function) take place during the pathogenesis of aplastic anemia (AA) and Graves' disease (GD). Antithyroid drugs used for the management of GD may induce AA and GD may occur following treatment of severe aplastic anemia (SAA). CASE PRESENTATION: Clinical and laboratory investigations were performed for an 11-year-and-2-month-old girl who was referred for bilateral exophthalmus and abnormal thyroid function tests...
April 25, 2018: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/29706030/preconception-management-of-thyroid-dysfunction
#6
Onyebuchi E Okosieme, Ishrat Khan, Peter N Taylor
Uncorrected thyroid dysfunction in pregnancy has well recognised deleterious effects on fetal and maternal health. The early gestation period is one of critical fetal vulnerability during which maternal thyroid dysfunction may have lasting repercussions. Accordingly, a pragmatic preconception strategy is key for ensuring optimal thyroid disease outcomes in pregnancy. Preconception planning in women with hypothyroidism should pre-empt and mirror the adaptive changes of the thyroid gland by careful levothyroxine dose adjustments to ensure adequate fetal thyroid hormone delivery in pregnancy...
April 29, 2018: Clinical Endocrinology
https://www.readbyqxmd.com/read/29688762/the-trends-of-hyperthyroidism-treatment-in-taiwan-a-nationwide-population-based-study
#7
Edy Kornelius, Yi-Sun Yang, Chien-Ning Huang, Yu-Hsun Wang, Shih-Chang Lo, Yung-Rung Lai, Jeng-Yuan Chiou
OBJECTIVE: Over the past three decades, few studies on hyperthyroidism treatment trends have been reported. Therefore, we used a nationwide population-based database to evaluate the current practices and management of hyperthyroidism in Taiwan. METHODS: This retrospective study included a random selection of 1 million people in Taiwan between 2004 and 2010. Hyperthyroidism patients who received anti-thyroid drugs (ATD), radioactive iodine (RAI), or surgery were identified...
April 24, 2018: Endocrine Practice
https://www.readbyqxmd.com/read/29686704/the-change-of-left-ventricular-function-in-rats-with-subclinical-hypothyroid-and-the-effects-of-thyroxine-replacement
#8
Xuedi Chen, Cuixia Gao, Ningning Gong, Yu Wang, Limin Tian
Objective: The main purpose of this study was to explore the relationships between serca2a, Ryr2, adipokines, and the left ventricular function in the subclinical hypothyroidism with different TSH levels and to determine the impact of L-T4 treatment on these indexes. Methods: Sixty-five male Wistar rats were randomly divided into five groups: control group; sHT A, B, and C group; and sHT + T4 group. The sHT rats were induced by methimazole (MMI), and the sHT + T4 rats were administered with L-T4 treatment after 8 weeks of MMI administration...
2018: International Journal of Endocrinology
https://www.readbyqxmd.com/read/29674037/determination-of-antioxidant-capacity-of-thiol-containing-compounds-by-electron-spin-resonance-spectroscopy-based-on-cu-2-ion-reduction
#9
Jia Jiang, Shuang Zang, Dan Li, Kun Wang, Sizhu Tian, Aimin Yu, Ziwei Zhang
Electron spin resonance spectroscopy was applied to determining the antioxidant capacity of eight thiol-containing compounds, including reduced glutathione, N-acetyl-L-cycsteine, methimazole, captopril, and tiopronin with one thiol group, 1,4-dithioerythritol and 2,3-dimercapto-1-propanol with two thiol groups, as well as L-cystine with no free thiol group. Cu2+ ion gives an electron spin resonance signal and is reduced to Cu+ ion with no electron spin resonance signal by the free thiol group in the compounds...
July 1, 2018: Talanta
https://www.readbyqxmd.com/read/29664186/notch-signaling-regulates-lgr5-olfactory-epithelium-progenitor-stem-cell-turnover-and-mediates-recovery-of-lesioned-olfactory-epithelium-in-mouse-model
#10
Qi Dai, Chen Duan, Wenwen Ren, Fangqi Li, Qian Zheng, Li Wang, Wenyan Li, Xiaoling Lu, Wenli Ni, Yanping Zhang, Yan Chen, Tieqiao Wen, Yiqun Yu, Hongmeng Yu
The Notch signaling pathway regulates stem cell proliferation and differentiation in multiple tissues and organs, and is required for tissue maintenance. However, the role of Notch in regulation of olfactory epithelium (OE) progenitor/stem cells to maintain tissue function is still not clear. A recent study reported that leucine-rich repeat-containing G-protein-coupled receptor 5 (Lgr5) is expressed in globose basal cells (GBCs) localized in OE. Through lineage tracing in vivo, we found that Lgr5+ cells act as progenitor/stem cells in OE...
April 17, 2018: Stem Cells
https://www.readbyqxmd.com/read/29664178/hypothyroidism-impairs-somatovisceral-reflexes-involved-in-micturition-of-female-rabbits
#11
Octavio Sánchez-García, Rhode López-Juárez, Julia Rodríguez-Castelán, Dora L Corona-Quintanilla, Margarita Martínez-Gómez, Estela Cuevas-Romero, Francisco Castelán
AIMS: To determine the impact of hypothyroidism on the bladder and urethral functions as well as in the activation of the pubococcygeous (Pcm) and bulbospongiosus (Bsm) during micturition. METHODS: Age-matched control and methimazole-induced hypothyroid female rabbits were used to simultaneously record cystometrograms, urethral pressure, and the reflex activation of Pcm and Bsm during the induced micturition. Urodynamic and urethral variables were measured. Activation or no activation of the Pcm and Bsm during the storage and voiding phases of micturition were categorized as 1 or 0...
April 17, 2018: Neurourology and Urodynamics
https://www.readbyqxmd.com/read/29663535/hypothyroidism-and-hyperthyroidism-change-ectoenzyme-activity-in-rat-platelets
#12
Jucimara Baldissarelli, Adriana Santi, Roberta Schmatz, Caroline C Martins, Daniela Zanini, Karine P Reichert, Gustavo R Thomé, Taís V Palma, Pauline da Costa, Vera M Morsch, Maria R C Schetinger
The purinergic system has an important role in the regulation of vascular functions. The interference of thyroid hormones in this system and in cardiovascular events has been studied in recent years. However, the mechanisms involved in vascular, purinergic, and oxidative changes in thyroid disorders are not completely understood. Therefore, the present study aimed to assess purinergic enzyme activity in platelets from rats with hypothyroidism and hyperthyroidism induced, respectively, by continuous exposure to methimazole (MMI) at 20 mg/100 mL or L-thyroxine at 1...
April 16, 2018: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29648530/clinical-and-histological-features-of-antineutrophil-cytoplasmic-antibody-associated-vasculitis-related-to-antithyroid-drugs
#13
Jumpei Hasegawa, Junichi Hoshino, Akinari Sekine, Noriko Hayami, Tatsuya Suwabe, Keiichi Sumida, Koki Mise, Toshiharu Ueno, Masayuki Yamanouchi, Ryo Hazue, Naoki Sawa, Kenichi Ohashi, Takeshi Fujii, Kenmei Takaichi, Yoshifumi Ubara
BACKGROUND: Antithyroid drugs such as propylthiouracil and methimazole have been reported to cause antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV), but little is known about long-term outcomes. MATERIALS AND METHODS: We identified AAV patients who underwent renal biopsy and retrospectively assessed their clinical and histological findings. Patients with AAV who had received propylthiouracil or methimazole were defined as having antithyroid drug-associated AAV (ATD-AAV), and the other patients were defined as having primary AAV...
April 12, 2018: Clinical Nephrology
https://www.readbyqxmd.com/read/29597200/acute-treatment-with-t-type-calcium-channel-enhancer-sak3-reduces-cognitive-impairments-caused-by-methimazole-induced-hypothyroidism-via-activation-of-cholinergic-signaling
#14
Noreen Husain, Yasushi Yabuki, Yasuharu Shinoda, Kohji Fukunaga
Hypothyroidism is a common disorder that is associated with psychological disturbances such as dementia, depression, and psychomotor disorders. We recently found that chronic treatment with the T-type calcium channel enhancer SAK3 prevents the cholinergic neurodegeneration induced by a single intraperitoneal (i.p.) injection of methimazole (MMI; 75 mg/kg), thereby improving cognition. Here, we evaluated the acute effect of SAK3 on cognitive impairments and its mechanism of action following the induction of hypothyroidism...
March 29, 2018: Pharmacology
https://www.readbyqxmd.com/read/29581918/steroids-and-thyrotoxicosis-precipitate-periodic-paralysis
#15
Rizwan Ahamed, Sarah McCalley, Anupam A Sule
Thyrotoxic Periodic Paralysis (TPP) belongs to a group of muscle diseases called channelopathies, which present with painless generalized muscle weakness without exertion. TPP can be precipitated by a large carbohydrate meal, stress, strenuous exercise, alcohol, a high-salt diet, menstruation, and cold temperatures. Rarely, steroids such as dexamethasone can also precipitate a TPP attack. A 29-year-old Hispanic male, with a history of hyperthyroidism, presented to the emergency department with progressive weakness, predominantly in the lower extremities since morning...
January 23, 2018: Curēus
https://www.readbyqxmd.com/read/29559887/topical-dexamethasone-administration-impairs-protein-synthesis-and-neuronal-regeneration-in-the-olfactory-epithelium
#16
Umberto Crisafulli, André M Xavier, Fabiana B Dos Santos, Tavane D Cambiaghi, Seo Y Chang, Marimélia Porcionatto, Beatriz A Castilho, Bettina Malnic, Isaias Glezer
Chronic inflammatory process in the nasal mucosa is correlated with poor smell perception. Over-activation of immune cells in the olfactory epithelium (OE) is generally associated with loss of olfactory function, and topical steroidal anti-inflammatory drugs have been largely used for treating such condition. Whether this therapeutic strategy could directly affect the regenerative process in the OE remains unclear. In this study, we show that nasal topical application of dexamethasone (DEX; 200 or 800 ng/nostril), a potent synthetic anti-inflammatory steroid, attenuates OE lesion caused by Gram-negative bacteria lipopolysaccharide (LPS) intranasal infusion...
2018: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/29559498/post-partum-and-non-post-partum-relapsing-graves-hyperthyroidism-display-different-response-to-anti-thyroid-drugs
#17
Mario Rotondi, Valentina Capelli, Francesca Coperchini, Sara Pinto, Laura Croce, Massimo Tonacchera, Luca Chiovato
DESIGN: Graves' disease (GD) patients in remission after a full course of methimazole (MMI) therapy are at risk for a relapse of hyperthyroidism during the post-partum (PP) period, but whether this relapse may display any peculiarity is still unknown. Aim of this study was to compare GD patients undergoing a relapse of hyperthyroidism either in the PP period or not. METHODS: We retrospectively evaluated fourty-three GD female patients in their childbearing age who experienced a relapse of hyperthyroidism...
March 20, 2018: European Journal of Endocrinology
https://www.readbyqxmd.com/read/29552362/severe-hyperthyroidism-complicated-by-agranulocytosis-treated-with-therapeutic-plasma-exchange-case-report-and-review-of-the-literature
#18
Vishnu Garla, Karthik Kovvuru, Shradha Ahuja, Venkatataman Palabindala, Bharat Malhotra, Sohail Abdul Salim
Aim: To present a case of Graves' disease complicated by methimazole induced agranulocytosis treated with therapeutic plasma exchange (TPE) and review of the literature. Case Presentation: A 21-year-old patient with a history of Graves' disease presented to the endocrine clinic. His history was significant for heat intolerance, weight loss, and tremors. Upon examination he had tachycardia, smooth goiter, thyroid bruit, and hyperactive reflexes. He was started on methimazole and metoprolol and thyroidectomy was to be done once his thyroid function tests normalized...
2018: Case Reports in Endocrinology
https://www.readbyqxmd.com/read/29525760/pancytopenia-a-rare-complication-of-graves-disease
#19
Vishnu Vardhan Garla, Sohail Abdul Salim, Licy L Yanes-Cardozo
A 27-year-old male patient who presented to the emergency room with complaints of sweating, palpitations, heat intolerance, insomnia and weight loss for the last 3 months. His medical history was significant for hypertension. On examination, he was tachycardic, hypertensive, had tremors of the upper extremities and a smooth goitre with a thyroid bruit. Laboratory assessment revealed a suppressed thyroid-stimulating hormone, high free thyroxine and positive thyroid receptor antibodies. Complete blood count showed pancytopenia...
March 9, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29467121/clinical-feasibility-of-continuously-monitored-data-for-heart-rate-physical-activity-and-sleeping-by-wearable-activity-trackers-in-patients-with-thyrotoxicosis-protocol-for-a-prospective-longitudinal-observational-study
#20
Jie-Eun Lee, Dong Hwa Lee, Tae Jung Oh, Kyoung Min Kim, Sung Hee Choi, Soo Lim, Young Joo Park, Do Joon Park, Hak Chul Jang, Jae Hoon Moon
BACKGROUND: Thyrotoxicosis is a common disease caused by an excess of thyroid hormones. The prevalence of thyrotoxicosis about 2% and 70-90% of thyrotoxicosis cases are caused by Graves' disease, an autoimmune disease, which has a high recurrence rate when treated with antithyroid drugs such as methimazole or propylthiouracil. The clinical symptoms and signs of thyrotoxicosis include palpitation, weight loss, restlessness, and difficulty sleeping. Although these clinical changes in thyrotoxicosis can be detected by currently available wearable activity trackers, there have been few trials of the clinical application of wearable devices in patients with thyrotoxicosis...
February 21, 2018: JMIR Research Protocols
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