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Salivary glands radiotherapy

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https://www.readbyqxmd.com/read/28517962/inhibition-of-the-continuum-of-radiation-induced-normal-tissue-injury-by-a-redox-active-mn-porphyrin
#1
Samuel R Birer, Chen-Ting Lee, Kingshuk Roy Choudhury, Kenneth H Young, Ivan Spasojevic, Ines Batinic-Haberle, James D Crapo, Mark W Dewhirst, Kathleen A Ashcraft
Normal tissue damage after head and neck radiotherapy involves a continuum of pathologic events to the mucosa, tongue and salivary glands. We examined the radioprotective effects of MnBuOE, a redox-active manganese porphyrin, at three stages of normal tissue damage: immediate (leukocyte endothelial cell [L/E] interactions), early (mucositis) and late (xerostomia and fibrosis) after treatment. In this study, mice received 0 or 9 Gy irradiation to the oral cavity and salivary glands ± MnBuOE treatment. Changes in leukocyte-endothelial cell interactions were measured 24 h postirradiation...
May 18, 2017: Radiation Research
https://www.readbyqxmd.com/read/28502238/parotid-gland-mean-dose-as-a-xerostomia-predictor-in-low-dose-domains
#2
Hubert Szymon Gabryś, Florian Buettner, Florian Sterzing, Henrik Hauswald, Mark Bangert
PURPOSE: Xerostomia is a common side effect of radiotherapy resulting from excessive irradiation of salivary glands. Typically, xerostomia is modeled by the mean dose-response characteristic of parotid glands and prevented by mean dose constraints to either contralateral or both parotid glands. The aim of this study was to investigate whether normal tissue complication probability (NTCP) models based on the mean radiation dose to parotid glands are suitable for the prediction of xerostomia in a highly conformal low-dose regime of modern intensity-modulated radiotherapy (IMRT) techniques...
May 13, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28450562/double-targeting-ligands-with-modulated-pharmacokinetics-for-endoradiotherapy-of-prostate-cancer
#3
James M Kelly, Alejandro Amor-Coarasa, Anastasia Nikolopoulou, Till Wüstemann, Peter Barelli, Dohyun Kim, Clarence Williams, Xiwei Zheng, Cong Bi, Bao Hu, J David Warren, David S Hage, Stephen G DiMagno, John W Babich
PSMA-targeted radiotherapy of prostate cancer (PCa) has emerged recently as a promising approach to the treatment of disseminated disease. A small number of ligands have been evaluated in patients, and while early tumor response is encouraging, relapse rate is high, and these compounds localize to the parotid, salivary and lacrimal glands as well as the kidney, leading to dose-limiting toxicities and adverse events affecting quality of life. We envision that dual targeting ligands displaying high affinity for PSMA and appropriate affinity for human serum albumin (HSA) may demonstrate a higher therapeutic index and be suitable for treatment of PCa by targeted alpha therapy (TAT)...
April 27, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28434191/the-effect-of-parotid-gland-sparing-imrt-on-salivary-composition-flow-rate-and-xerostomia-measures
#4
Thomas M Richards, Tara Hurley, Lorna Grove, Kevin J Harrington, Guy H Carpenter, Gordon B Proctor, Christopher M Nutting
OBJECTIVES: To describe parotid gland (PG) saliva organic and inorganic composition and flow rate changes, after curative intensity-modulated radiotherapy (IMRT) for head and neck cancer (HNC) and analyse the relationship between PG saliva analytes and xerostomia measures. METHODS AND MATERIALS: Twenty-six patients recruited to five prospective phase 2 or 3 trials which assessed toxicity and efficacy of IMRT by HNC subsite, provided longitudinal PG salivas. Salivary flow rate, subjective and objective xerostomia measures were prospectively collected and salivas tested for inorganic and organic analytes...
April 23, 2017: Oral Diseases
https://www.readbyqxmd.com/read/28413869/salivary-duct-carcinoma-with-invasive-micropapillary-and-rhabdoid-feature-arising-in-the-submandibular-gland
#5
Mitsunobu Otsuru, Takayuki Aoki, Yusuke Kondo, Yoshihide Ota, Masashi Sasaki, Takatugu Suzuki, Go Ogura, Nobue Kumaki
Salivary duct carcinoma (SDC) is a high-grade malignant salivary gland tumor associated with poor prognosis, frequent recurrence, and metastasis. An 82-year-old man presented at the department of oral and maxillofacial surgery at Tokai University Hospital with a painless swelling in the right submandibular region that had been there for 20 years. On presentation, an elastic hard tumor, 50 × 50 mm in size, was observed in the submandibular region. Diagnostic imaging was performed, and a malignant tumor in the submandibular gland was suspected...
April 20, 2017: Tokai Journal of Experimental and Clinical Medicine
https://www.readbyqxmd.com/read/28410601/the-diagnosis-and-management-of-nk-t-cell-lymphomas
#6
REVIEW
Eric Tse, Yok-Lam Kwong
Extranodal natural killer (NK)/T-cell lymphoma is an aggressive malignancy of putative NK-cell origin, with a minority deriving from the T-cell lineage. Pathologically, the malignancy occurs in two forms, extranodal NK/T-cell lymphoma, nasal type; and aggressive NK-cell leukaemia. Lymphoma occur most commonly (80%) in the nose and upper aerodigestive tract, less commonly (20%) in non-nasal areas (skin, gastrointestinal tract, testis, salivary gland), and rarely as disseminated disease with a leukemic phase...
April 14, 2017: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/28408701/low-grade-mucoepidermoid-tumor-of-parotid-gland-presenting-as-focal-asymmetry-in-the-follow-up-radioiodine-scan-in-a-patient-of-differentiated-papillary-carcinoma-of-thyroid
#7
Chinna Naik, Sandip Basu
Low grade mucoepidermoid tumor of the right parotid gland presenting as focal uptake in the follow-up whole body iodine scan in a patient of differentiated papillary carcinoma of thyroid 1 year after successful ablation is presented in this report. Following surgical excision, the histopathology was proven. The illustrated case represents false positive focal accumulation of (131)I in low grade mucoepidermoid carcinoma of the salivary gland that arose early in the follow-up course in differentiated thyroid carcinoma post-radioiodine (RAI)...
April 13, 2017: Journal of Nuclear Medicine Technology
https://www.readbyqxmd.com/read/28394767/concurrent-chemoradiotherapy-in-the-adjuvant-treatment-of-high-risk-primary-salivary-gland-malignancies
#8
Brian J Gebhardt, James P Ohr, Robert L Ferris, Umamaheswar Duvvuri, Seungwon Kim, Jonas T Johnson, Dwight E Heron, David A Clump
OBJECTIVES: Adjuvant radiation therapy (RT) is indicated for patients with salivary gland malignancies with risk factors for recurrence following resection. We analyzed patients treated with adjuvant RT with or without concurrent chemotherapy to determine the impact of prognostic and treatment factors. MATERIALS AND METHODS: Retrospective analysis was performed of 128 patients treated with surgical resection followed by intensity-modulated radiotherapy. In total, 31 (24...
April 7, 2017: American Journal of Clinical Oncology
https://www.readbyqxmd.com/read/28377929/expression-mutation-and-amplification-status-of-egfr-and-its-correlation-with-five-mirnas-in-salivary-gland-tumours
#9
Emanuela Boštjančič, Nina Hauptman, Aleš Grošelj, Damjan Glavač, Metka Volavšek
Malignant salivary gland tumours are rare histologically and clinically heterogeneous group of tumours, missing prognostic factors and therapeutic targets. MicroRNAs (miRNAs), small noncoding RNAs, and posttranscriptional regulators of mRNA are poorly described in different subtypes of salivary gland tumours. Epidermal growth factor receptor (EGFR), an important therapeutic target and target of certain miRNAs (i.e., miR-133b), shows variable degrees of expression in salivary gland tumours. Our study included 70 parotid gland tumours of different histological subtypes...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28336186/variation-in-head-and-neck-cancer-care-in-the-netherlands-a-retrospective-cohort-evaluation-of-incidence-treatment-and-outcome
#10
M de Ridder, A J M Balm, R J Baatenburg de Jong, C H J Terhaard, R P Takes, M Slingerland, E Dik, R J E Sedee, J G A M de Visscher, H Bouman, S M Willems, M W Wouters, L E Smeele, B A C van Dijk
BACKGROUND: To explore variation in numbers and treatment between hospitals that treat head and neck cancer (HNC) in the Netherlands. MATERIAL AND METHODS: Patient, tumor and treatment characteristics were collected from the Netherlands Cancer Registry, while histopathological features were obtained by linkage to the national pathology record register PALGA. Inter-hospital variation in volume, stage, treatment, pathologically confirmed loco-regional recurrence and overall survival rate was evaluated by tumor site...
March 8, 2017: European Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28323577/mitigation-of-radiation-induced-epithelial-damage-by-the-tlr5-agonist-entolimod-in-a-mouse-model-of-fractionated-head-and-neck-irradiation
#11
Ilia A Toshkov, Anatoli S Gleiberman, Vadim L Mett, Alan D Hutson, Anurag K Singh, Andrei V Gudkov, Lyudmila G Burdelya
Radiation treatment of head and neck cancer frequently causes severe collateral damage to normal tissues including mouth mucosa, salivary glands and skin. This toxicity limits the radiation dose that can be delivered and affects the patient's quality of life. Previous studies in mice and nonhuman primates showed that entolimod, a toll-like receptor 5 (TLR5) agonist derived from bacterial flagellin, effectively reduced radiation damage to hematopoietic and gastrointestinal tissues in both total-body and local irradiation scenarios, with no protection of tumors...
May 2017: Radiation Research
https://www.readbyqxmd.com/read/28288723/clinical-features-and-management-of-non-gastrointestinal-non-ocular-extranodal-mucosa-associated-lymphoid-tissue-enmalt-marginal-zone-lymphomas
#12
REVIEW
Estella Matutes, Carlos Montalban
Extranodal mucosa associated lymphoid tissue (ENMALT) marginal zone lymphomas may arise at any site of the body. The most frequent localizations other than gastrointestinal and eye are salivary gland, skin, lung and thyroid. These lymphomas usually arise in a setting of inflammation due to a persistent infection or autoimmune diseases such as Sjogren syndrome in salivary MALT lymphomas and Hashimoto's thryroiditis in thyroid lymphomas. They affect middle-aged patients with a female predominance when lymphoma arises in certain locations...
March 2017: Best Practice & Research. Clinical Haematology
https://www.readbyqxmd.com/read/28271999/postoperative-radiotherapy-in-salivary-gland-carcinoma-a-single-institution-experience
#13
Öztun Temelli, Ersoy Kekilli, Ahmet Kizilay
BACKGROUND: Salivary gland carcinoma are rare tumors and the main treatment is surgical. The addition of radiotherapy to surgery decreases locoregional relapses in high risk patients. Aim of our study is to retrospectively evaluate local control and survival and the factors affecting them in patients who received postoperative radiotherapy. MATERIALS AND METHODS: The medical records of 30 patients with salivary gland tumors operated on and referred to our clinic for adjuvant RT between January 2004 and June 2015 were retrospectively evaluated...
January 2017: Gulf Journal of Oncology
https://www.readbyqxmd.com/read/28270226/first-in-man-mesenchymal-stem-cells-for-radiation-induced-xerostomia-mesrix-study-protocol-for-a-randomized-controlled-trial
#14
Christian Grønhøj, David H Jensen, Peter V Glovinski, Siri Beier Jensen, Allan Bardow, Roberto S Oliveri, Lena Specht, Carsten Thomsen, Sune Darkner, Katalin Kiss, Anne Fischer-Nielsen, Christian von Buchwald
BACKGROUND: Salivary gland hypofunction and xerostomia are major complications following radiotherapy for head and neck cancer and may lead to debilitating oral disorders and impaired quality of life. Currently, only symptomatic treatment is available. However, mesenchymal stem cell (MSC) therapy has shown promising results in preclinical studies. Objectives are to assess safety and efficacy in a first-in-man trial on adipose-derived MSC therapy (ASC) for radiation-induced xerostomia...
March 7, 2017: Trials
https://www.readbyqxmd.com/read/28260286/-the-quantitative-evaluation-of-early-radiation-induced-changes-in-the-salivary-glands-using-mri
#15
S Zhou, J J Qian, L Xu, Y Tian, Q H Fan, J K Shen, G H Fan, J P Gong, M H Qian
Objective: To quantitatively evaluate the early radiation injury of salivary glands in patients with nasopharyngeal carcinoma (NPC) after intensity-modulated radiotherapy (IMRT). Methods: Twenty patients with NPC between 2014 and 2015 from the Second Affiliated Hospital of Soochow University were retrospectively analyzed.All patients underwent an MRI scan before and after IMRT.The volumes, T(1)WI, T(2)WI signal intensity(SIs) and apparent diffusion coefficient (ADCs) of the parotid and submandibular glands were measured...
February 21, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28258315/impact-of-low-level-laser-therapy-on-hyposalivation-salivary-ph-and-quality-of-life-in-head-and-neck-cancer-patients-post-radiotherapy
#16
Luiz Felipe Palma, Fernanda Aurora Stabile Gonnelli, Marcelo Marcucci, Rodrigo Souza Dias, Adelmo José Giordani, Roberto Araújo Segreto, Helena Regina Comodo Segreto
Late effects of radiotherapy for head and neck cancer treatment have been increasingly investigated due to its impact on patients' quality of life. The purpose of this study was to evaluate the effect of low-level laser therapy on hyposalivation, low salivary pH, and quality of life in head and neck cancer patients post-radiotherapy. Twenty-nine patients with radiation-induced xerostomia received laser sessions twice a week, during 3 months (24 sessions). For this, a continuous wave Indium-Gallium-Aluminium-Phosphorus diode laser device was used punctually on the major salivary glands (808 nm, 0...
March 3, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28249650/interventions-for-the-management-of-radiotherapy-induced-xerostomia-and-hyposalivation-a-systematic-review-and-meta-analysis
#17
REVIEW
Valeria Mercadante, Arwa Al Hamad, Giovanni Lodi, Stephen Porter, Stefano Fedele
INTRODUCTION: Salivary gland hypofunction is a common and permanent adverse effect of radiotherapy to the head and neck. Randomised trials of available treatment modalities have produced unclear results and offer little reliable guidance for clinicians to inform evidence-based therapy. We have undertaken this systematic review and meta-analysis to estimate the effectiveness of available interventions for radiotherapy-induced xerostomia and hyposalivation. METHODS: We searched MEDLINE, Cochrane Central, EMBASE, AMED, and CINAHL database through July 2016 for randomised controlled trials comparing any topical or systemic intervention to active and/or non-active controls for the treatment of radiotherapy-induced xerostomia...
March 2017: Oral Oncology
https://www.readbyqxmd.com/read/28245294/amino-acid-transport-system-a-substrate-predicts-the-therapeutic-effects-of-particle-radiotherapy
#18
Tomoya Uehara, Mariko Watanabe, Hiroyuki Suzuki, Yoshiya Furusawa, Yasushi Arano
L-[methyl-11C]Methionine (11C-Met) is useful for estimating the therapeutic efficacy of particle radiotherapy at early stages of the treatment. Given the short half-life of 11C, the development of longer-lived 18F- and 123I-labeled probes that afford diagnostic information similar to 11C-Met, are being sought. Tumor uptake of 11C-Met is involved in many cellular functions such as amino acid transport System-L, protein synthesis, and transmethylation. Among these processes, since the energy-dependent intracellular functions involved with 11C-Met are more reflective of the radiotherapeutic effects, we evaluated the activity of the amino acid transport System-A as an another energy-dependent cellular function in order to estimate radiotherapeutic effects...
2017: PloS One
https://www.readbyqxmd.com/read/28241884/radiotherapy-of-nasopharyngeal-cancer-using-rapidarc-dosimetric-study-of-military-teaching-hospital-mohamed-v-morocco
#19
Issam Lalya, El Amin Marnouche, Maghous Abdelhak, Noha Zaghba, Khalid Andaloussi, Mohamed Elmarjany, Laila Baddouh, Keltoum Dahmani, Khalid Hadadi, Hassan Sifat, Hamid Mansouri
BACKGROUND: The aim of the present study is to assess efficacy and efficiency of Volumetric-modulated arc therapy (VMAT) technique in treatment of nasopharyngeal cancer in our institution and to report toxicity related to this technique. METHODS: Between June 2013 and January 2015, thirty-two patients with non metastatic nasopharyngeal cancer were curatively treated using VMAT Rapidarc. Dose prescription was performed using two different schedules, it consisted of either simultaneous integrated boost or simultaneous modulated accelerated radiation therapy delivering 70 Gy in 35 fractions and 69...
February 28, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28238560/diagnostic-and-therapeutic-modalities-for-287-malignant-and-benign-salivary-tumors-a-cohort-study
#20
Yair Israel, Adi Rachmiel, Gil Ziv, Rafael Nagler
BACKGROUND: Salivary gland tumors (SGT's), 3-10% of head/neck tumors, exhibit a striking range of morphological diversity. This minimally symptomatic disease can be challenging to diagnose, and therapeutic policy is still controversial. METHODS: We compared benign and malignant cohorts according to diagnostic modality utilized and therapeutic modality administered over 20 years in a single medical center. RESULTS: Of 287 cases, 216 had benign tumors and 71 had malignant tumors...
January 25, 2017: Journal of Cranio-maxillo-facial Surgery
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