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pheochromocytoma treatment

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https://www.readbyqxmd.com/read/29350258/antitumor-effects-of-radionuclide-treatment-using-%C3%AE-emitting-meta-211at-astato-benzylguanidine-in-a-pc12-pheochromocytoma-model
#1
Yasuhiro Ohshima, Hitomi Sudo, Shigeki Watanabe, Kotaro Nagatsu, Atsushi B Tsuji, Tetsuya Sakashita, Yoichi M Ito, Keiichiro Yoshinaga, Tatsuya Higashi, Noriko S Ishioka
PURPOSE: Therapeutic options for patients with malignant pheochromocytoma are currently limited, and therefore new treatment approaches are being sought. Targeted radionuclide therapy provides tumor-specific systemic treatments. The β-emitting radiopharmaceutical meta-131I-iodo-benzylguanidine (131I-MIBG) provides limited survival benefits and has adverse effects. A new generation of radionuclides for therapy using α-particles including meta-211At-astato-benzylguanidine (211At-MABG) are expected to have strong therapeutic effects with minimal side effects...
January 19, 2018: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29348307/non-mammalian-models-of-multiple-endocrine-neoplasia-type-2
#2
REVIEW
Tirtha K Das, Ross L Cagan
Twenty-five years ago, RET was identified as the primary driver of multiple endocrine neoplasia type 2 (MEN2) syndrome. MEN2 is characterized by several transformation events including pheochromocytoma, parathyroid adenoma and, especially penetrant, medullary thyroid carcinoma (MTC). Overall, MTC is a rare but aggressive type of thyroid cancer for which no effective treatment currently exists. Surgery, radiation, radioisotope treatment and chemotherapeutics have all shown limited success, and none of these approaches have proven durable in advanced disease...
February 2018: Endocrine-related Cancer
https://www.readbyqxmd.com/read/29325527/single-center-experience-with-laparoscopic-adrenalectomy-on-a-large-clinical-series
#3
Giovanni Conzo, Claudio Gambardella, Giancarlo Candela, Alessandro Sanguinetti, Andrea Polistena, Guglielmo Clarizia, Renato Patrone, Francesco Di Capua, Chiara Offi, Mario Musella, Sergio Iorio, Giseppe Bellastella, Daniela Pasquali, Annamaria De Bellis, Antonio Sinisi, Nicola Avenia
BACKGROUND: Laparoscopic adrenalectomy is considered the gold standard technique for the treatment of benign small and medium size adrenal masses (<6 cm), due to low morbidity rate, short hospitalization and patient rapid recovery. The aim of our study is to analyse the feasibility and efficiency of this surgical approach in a broad spectrum of adrenal gland pathologies. METHODS: Pre-operative, intra-operative and post-operative data from 126 patients undergone laparoscopic adrenalectomy between January 2003 and December 2015 were retrospectively collected and reviewed...
January 11, 2018: BMC Surgery
https://www.readbyqxmd.com/read/29258609/complete-remission-of-metastatic-pheochromocytoma-in-123i-metaiodobenzylguanidine-scintigraphy-after-a-single-session-of-131i-metaiodobenzylguanidine-therapy-a-case-report
#4
Teruaki Sugino, Ryosuke Ando, Rei Unno, Keitaro Iida, Taku Naiki, Shuzo Hamamoto, Kentaro Mizuno, Atsushi Okada, Yukihiro Umemoto, Noriyasu Kawai, Keiichi Tozawa, Yutaro Hayashi, Anri Inaki, Daiki Kayano, Seigo Kinuya, Takahiro Yasui
BACKGROUND: Pheochromocytomas are rare neuroendocrine tumors, with a malignancy frequency of approximately 10%. The treatment of malignant pheochromocytoma is palliative, and the traditional management strategy has limited efficacy. Furthermore, no clear criteria exist for the treatment of metastatic pheochromocytoma, especially for unresectable lesions. We report a case of complete remission of metastatic pheochromocytoma in 123I-metaiodobenzylguanidine (MIBG) scintigraphy after a single session of 131I-MIBG therapy...
December 19, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/29247275/protective-effect-of-mir-374a-on-chemical-hypoxia-induced-damage-of-pc12-cells-in-vitro-via-the-gadd45%C3%AE-jnk-signaling-pathway
#5
Weijun Gong, Shuyan Qie, Peiling Huang, Jianing Xi
To explore the effect of microRNA-374a (miR-374a) on chemical hypoxia-induced pheochromocytoma (PC12) cell damage by mediating growth arrest and the DNA damage-45 alpha (GADD45α)/c-Jun N-terminal kinase (JNK) signaling pathway. PC12 cells were divided into a Control group (no treatment), Model group (treated with CoCl2 for 24 h), negative control (NC) group (transfected with miR-374a negative control sequence and treated with CoCl2 for 24 h), and miR-374a mimic group (transfected with miR-374a mimics and treated with CoCl2 for 24 h)...
December 15, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/29234427/a-chinese-herbal-formula-gengnianchun-ameliorates-%C3%AE-amyloid-peptide-toxicity-in-a-caenorhabditis-elegans-model-of-alzheimer-s-disease
#6
Fanhui Meng, Jun Li, Yanqiu Rao, Wenjun Wang, Yan Fu
Alzheimer's disease (AD) is an age-related neurodegenerative disorder, and the few drugs that are currently available only treat the symptoms. Traditional medicine or phytotherapy has been shown to protect against AD. In our previous studies, Gengnianchun (GNC), a traditional Chinese medicine formula with a prolongevity effect, protected against Aβ-induced cytotoxicity in pheochromocytoma cells (PC-12 cells) and hippocampal cells. Here, we investigated the effects and possible mechanisms by which GNC protected against Aβ toxicity using transgenic Caenorhabditis elegans CL4176...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/29222055/autophagy-plays-a-protective-role-in-mn-induced-toxicity-in-pc12-cells
#7
Qian Zhou, Xiaolong Fu, Xueting Wang, Qin Wu, Yuanfu Lu, Jingshan Shi, James E Klaunig, Shaoyu Zhou
Excessive environmental or occupational exposure to manganese (Mn) is associated with increased risk of neuron degenerative disorders. Oxidative stress and mitochondrial dysfunction are the main mechanisms of Mn mediated neurotoxicity. Selective removal of damaged mitochondria by autophagy has been proposed as a protective mechanism against neuronal toxicant-induced neurotoxicity. Whether autophagic flux plays a role in Mn-induced cytotoxicity remains to be fully elucidated. The present study was designed to investigate the effect of Mn exposure on autophagy, and how modulation of autophagic flux alters the sensitivities of cells to Mn-elicited cytotoxicity...
December 6, 2017: Toxicology
https://www.readbyqxmd.com/read/29209220/the-traditional-japanese-herbal-medicine-hachimijiogan-elicits-neurite-outgrowth-effects-in-pc12-cells-and-improves-cognitive-in-ad-model-rats-via-phosphorylation-of-creb
#8
Kaori Kubota, Haruka Fukue, Hitomi Sato, Kana Hashimoto, Aya Fujikane, Hiroshi Moriyama, Takuya Watanabe, Shutaro Katsurabayashi, Mosaburo Kainuma, Katsunori Iwasaki
Hachimijiogan (HJG) is a traditional herbal medicine that improves anxiety disorders in patients with dementia. In this study, we tested the hypothesis that HJG exerts neurotrophic factor-like effects to ameliorate memory impairment in Alzheimer disease (AD) model rats. First, we describe that HJG acts to induce neurite outgrowth in PC12 cells (a rat pheochromocytoma cell line) like nerve growth factor (NGF) in a concentration-dependent manner (3 μg/ml HJG, p < 0.05; 10-500 μg/ml HJG, p < 0.001). While six herbal constituents of HJG, Rehmannia root, Dioscorea rhizome, Rhizoma Alismatis, Poria sclerotium, Moutan bark, and Cinnamon bark, could induce neurite outgrowth effects, the effect was strongest with HJG (500 μg/ml)...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29189215/lateral-transperitoneal-adrenalectomy-versus-posterior-retroperitoneoscopic-adrenalectomy-for-benign-adrenal-gland-disease-randomized-controlled-trial-at-a-single-tertiary-medical-center
#9
Young Jun Chai, Hyeong Won Yu, Ra-Yeong Song, Su-Jin Kim, June Young Choi, Kyu Eun Lee
OBJECTIVE: The aim of this study was to compare the surgical outcomes of lateral transperitoneal adrenalectomy (LTA) and posterior retroperitoneoscopic adrenalectomy (PRA) for benign adrenal tumor. BACKGROUND: Although LTA is the standard treatment for benign adrenal gland tumor, PRA has recently gained popularity. Studies comparing the surgical outcomes of the 2 approaches have reported conflicting findings and thus it remains unclear which approach is superior...
November 20, 2017: Annals of Surgery
https://www.readbyqxmd.com/read/29184406/effect-of-a-317491-delivered-by-glycolipid-like-polymer-micelles-on-endometriosis-pain
#10
Ming Yuan, Shaojie Ding, Tingting Meng, Binbin Lu, Shihong Shao, Xinmei Zhang, Hong Yuan, Fuqiang Hu
Endometriosis is a common gynecological disease with a lack of effective clinical treatment. Current therapy often results in endometriosis pain recurrence and serious side effects. P2X3 receptor, an adenosine triphosphate (ATP)-gated ion channel, might be implicated in endometriosis pain. In this study, chitosan oligosaccharide-g-stearic acid (CSOSA) polymer micelles-coated nanostructured lipid carriers (NLCs) were developed as a novel delivery system for A-317491, a selective P2X3 receptor antagonist for endometriosis pain therapy...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29181125/protective-effects-and-possible-mechanisms-of-ergothioneine-and-hispidin-against-methylglyoxal-induced-injuries-in-rat-pheochromocytoma-cells
#11
Tuzz-Ying Song, Nae-Cherng Yang, Chien-Lin Chen, Thuy Lan Vo Thi
Diabetic encephalopathy (DE) is often a complication in patients with Alzheimer's disease due to high blood sugar induced by diabetic mellitus. Ergothioneine (EGT) and hispidin (HIP) are antioxidants present in Phellinus linteus. Methylglyoxal (MGO), a toxic precursor of advanced glycated end products (AGEs), is responsible for protein glycation. We investigated whether a combination EGT and HIP (EGT + HIP) protects against MGO-induced neuronal cell damage. Rat pheochromocytoma (PC12) cells were preincubated with EGT (2 μM), HIP (2 μM), or EGT + HIP, then challenged with MGO under high-glucose condition (30 μM MGO + 30 mM glucose; GLU + MGO) for 24-96 h...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29157485/la-chirurgie-d%C3%A2-%C3%A3-pargne-surr%C3%A3-nalienne-du-cortex-%C3%A3-la-m%C3%A3-dulla-cortical-sparing-surgery-from-cortex-to-medulla
#12
A Ferriere, V Kerlan, A Tabarin
The 2017 Endocrine Society annual meeting included several communications and debates on the conservative adrenal surgery in bilateral hereditary pheochromocytomas (BHP), bilateral adrenal macronodular hyperplasia (BAMH) and primary hyperaldosteronism (PHA). The general principle is to preserve a part of the adrenal cortex to prevent the occurrence of a definitive adrenal insufficiency. In BHP, cortical sparing surgery allows more than 50% of patients to maintain normal corticotropic function at 10 years with a low recurrence rate (~ 10%)...
October 2017: Annales D'endocrinologie
https://www.readbyqxmd.com/read/29144820/pheochromocytoma-a-genetic-and-diagnostic-update
#13
Leilani B Mercado-Asis, Katherine I Wolf, Ivana Jochmanova, David Taïeb
OBJECTIVE: Pheochromocytomas and paragangliomas (PPGLs) are neuroendocrine tumors derived from adrenal or extra-adrenal locations, respectively. Upon suspicion of PPGL, specific metabolomic, molecular, biochemical, imaging, and histopathological studies are performed to prove, localize, treat, and monitor disease progression. Recently, improved diagnostic tools allow physicians to accurately diagnose PPGL, even in patients presenting with small (less than 1 cm) or biochemically silent tumors, which previously delayed proper detection and treatment...
November 16, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/29127554/is-there-any-role-for-minimally-invasive-surgery-in-net
#14
REVIEW
M Thomaschewski, H Neeff, T Keck, H P H Neumann, T Strate, E von Dobschuetz
Neuroendocrine tumors (NET) represent the variability of almost benign lesions either secreting hormones occurring as a single lesion up to malignant lesions with metastatic potential. Treatment of NET is usually performed by surgical resection. Due to the rarity of NET, surgical treatment is mainly based on the experience and recommendations of experts and less on the basis of prospective randomized studies. In addition, the development and establishment of new surgical procedures is made more difficult by their rarity...
November 11, 2017: Reviews in Endocrine & Metabolic Disorders
https://www.readbyqxmd.com/read/29113559/proceedings-of-the-2017-national-toxicology-program-satellite-symposium
#15
Susan A Elmore, Famke Aeffner, Dinesh S Bangari, Torrie A Crabbs, Stacey Fossey, Shayne C Gad, Wanda M Haschek, Jessica S Hoane, Kyathanahalli Janardhan, Ramesh C Kovi, Gail Pearse, Lyn M Wancket, Erin M Quist
The 2017 annual National Toxicology Program Satellite Symposium, entitled "Pathology Potpourri," was held in Montreal, Quebec, Canada at the Society of Toxicologic Pathology's 36th annual meeting. The goal of this symposium was to present and discuss challenging diagnostic pathology and/or nomenclature issues. This article presents summaries of the speakers' talks along with select images that were used by the audience for voting and discussion. Various lesions and other topics covered during the symposium included renal papillary degeneration in perinatally exposed animals, an atriocaval mesothelioma, an unusual presentation of an alveolar-bronchiolar carcinoma, a paraganglioma of the organ of Zuckerkandl (also called an extra-adrenal pheochromocytoma), the use of human muscle samples to illustrate the challenges of manual scoring of fluorescent staining, intertubular spermatocytic seminomas, medical device pathology assessment and discussion of the approval process, collagen-induced arthritis, incisor denticles, ameloblast degeneration and poorly mineralized enamel matrix, connective tissue paragangliomas, microcystin-LR toxicity, perivascular mast cells in the forebrain thalamus unrelated to treatment, and 2 cases that provided a review of the International Harmonization of Nomenclature and Diagnostic Criteria (INHAND) bone nomenclature and recommended application of the terminology in routine nonclinical toxicity studies...
January 1, 2017: Toxicologic Pathology
https://www.readbyqxmd.com/read/29099942/phase-1-study-of-high-specific-activity-i-131-mibg-for-metastatic-and-or-recurrent-pheochromocytoma-or-paraganglioma
#16
Richard B Noto, Daniel A Pryma, Jessica Jensen, Tess Lin, Nancy Stambler, Thomas Strack, Vivien Wong, Stanley J Goldsmith
Context: There are no approved therapies for the treatment of metastatic and/or recurrent pheochromocytoma or paraganglioma (PPGL) in the United States. Objective: To determine the maximum tolerated dose (MTD) of high-specific-activity I-131 meta-iodobenzylguanidine (MIBG) for the treatment of metastatic and/or recurrent PPGL. Design: Phase 1, dose escalating study to determine the MTD via a standard 3+3 design; escalating by 37 MBq/kg starting at 222 MBq/kg...
November 1, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29099418/temozolomide-treatment-of-a-malignant-pheochromocytoma-and-an-unresectable-max-related-paraganglioma
#17
Alfonso M Ferrara, Giuseppe Lombardi, Ardi Pambuku, Domenico Meringolo, Roberta Bertorelle, Margherita Nardin, Francesca Schiavi, Maurizio Iacobone, Giuseppe Opocher, Vittorina Zagonel, Stefania Zovato
Pheochromocytomas (PCCs) and paragangliomas (PGLs) are neuroendocrine tumors with a strong genetic background. The mainstay of treatment for PCC/PGLs is surgery. However, for unresectable lesions, no curative treatment is currently available. Temozolomide (TMZ) has been shown to determine radiological and biochemical response in malignant PCC/PGLs. We report two cases of PCC/PGLs treated with TMZ. Case 1 is a 51-year-old man with local and distant recurrence (liver and bone metastases) of right adrenal PCC...
November 2, 2017: Anti-cancer Drugs
https://www.readbyqxmd.com/read/29095319/malignant-pheochromocytoma-with-multiple-vertebral-metastases-causing-acute-incomplete-paralysis-during-pregnancy-literature-review-with-one-case-report
#18
REVIEW
Shuzhong Liu, An Song, Xi Zhou, Xiangyi Kong, William A Li, Yipeng Wang, Yong Liu
RATIONALE: We present a rare case of malignant pheochromocytoma with thoracic metastases during pregnancy that presented with symptoms of myelopathy and was treated with circumferential decompression, stabilization, and radiation. The management of this unique case is not well documented. The clinical manifestations, imaging results, pathological characteristics, treatment and prognosis of the case were analyzed. PATIENT CONCERNS: A 26-year-old pregnant woman with a history of paroxysmal hypertension during the second trimester presented with lower extremity weakness, numbness, urinary incontinence, and back pain...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29081018/treatment-for-malignant-pheochromocytomas-and-paragangliomas-5%C3%A2-years-of-progress
#19
REVIEW
Paola Jimenez, Claudio Tatsui, Aaron Jessop, Sonali Thosani, Camilo Jimenez
PURPOSE OF REVIEW: The purpose of this manuscript is to review the progress in the field of therapeutics for malignant pheochromocytomas and sympathetic paraganglioma (MPPG) over the past 5 years. RECENT FINDINGS: The manuscript will describe the clinical predictors of survivorship and their influence on the first TNM staging classification for pheochromocytomas and sympathetic paragangliomas, the treatment of hormonal complications, and the rationale that supports the resection of the primary tumor and metastases in patients with otherwise incurable disease...
October 28, 2017: Current Oncology Reports
https://www.readbyqxmd.com/read/29019745/imaging-of-nonmalignant-adrenal-lesions-in-children
#20
Kiran M Sargar, Geetika Khanna, Rebecca Hulett Bowling
The adrenal glands in children can be affected by a variety of benign lesions. The diagnosis of adrenal lesions can be challenging, but assessment of morphologic changes in correlation with the clinical presentation can lead to an accurate diagnosis. These lesions can be classified by their cause: congenital (eg, discoid adrenal gland, horseshoe adrenal gland, and epithelial cysts), vascular and/or traumatic (eg, adrenal hemorrhage), infectious (eg, granulomatous diseases), enzyme deficiency disorders (eg, congenital adrenal hyperplasia [CAH] and Wolman disease), benign neoplasms (eg, pheochromocytomas, ganglioneuromas, adrenal adenomas, and myelolipomas), and adrenal mass mimics (eg, extralobar sequestration and extramedullary hematopoiesis)...
October 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
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