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Radiation and salivary gland

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https://www.readbyqxmd.com/read/27900255/adenoid-cystic-carcinoma-of-the-floor-of-the-mouth-a-rare-presentation
#1
Chandresh Jaiswara, Neeraj Kumar Dhiman, Akhilesh Kumar Singh, Naresh Kumar Sharma, Vishal Verma, Arun Pandey
Adenoid cystic carcinoma (ACC) is an unusual salivary gland malignancy that remains poorly understood. It is a slow growing but aggressive neoplasm with a tendency for recurrence. It is characterized by the proliferation of ductal (luminal) and myoepithelial cells in cribriform, tubular, solid, and cystic forms. Standard treatment, including surgery with postoperative radiation therapy, has attained reasonable local control rates, but distant metastases do not allow any improvement in the survival rate. The understanding of the molecular mechanisms driving ACC is quite rudimentary...
November 2016: Journal of Oral Biology and Craniofacial Research
https://www.readbyqxmd.com/read/27885457/-psma-targeted-radioligand-therapy-in-prostate-cancer
#2
M M Heck, M Retz, R Tauber, K Knorr, C Kratochwil, M Eiber
Radioligand therapy (RLT) directed against prostate-specific membrane antigen (PSMA) enables tumor-specific treatment directed against PSMA-overexpressing prostate cancer cells. Several PSMA ligands such as PSMA-617 or PSMA-I&T have been developed that can be labeled with β‑radiating lutetium-177. These are currently applied in compassionate use programs to treat metastatic castration-resistant prostate cancer (mCRPC). PSMA-directed RLT is currently being offered in several nuclear medicine departments throughout Germany...
November 24, 2016: Der Urologe. Ausg. A
https://www.readbyqxmd.com/read/27882233/high-dose-rate-brachytherapy-for-local-recurrent-adenoid-cystic-carcinoma-of-the-tongue-base-following-postoperative-external-beam-radiotherapy
#3
Sun Young Lee, Jung Soo Kim, Hyoung Cheol Kwon
Adenoid cystic carcinoma is a rare neoplasm commonly originating from the minor salivary glands. The clinical findings typical of this tumor include slow growth, perineural invasion and high frequency of local recurrence. In this study, a patient presented with a tongue base lesion that was treated with surgical excision and additional postoperative external beam radiotherapy. However, local recurrence occurred 8 months after radiotherapy. If recurrence occurs after radiation therapy, total glossectomy should be considered...
November 2016: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/27875901/reducing-radiation-related-morbidity-in-the-treatment-of-nasopharyngeal-carcinoma
#4
Jason W Chan, Upendra Parvathaneni, Sue S Yom
While radiation therapy is the mainstay of treatment for nasopharyngeal carcinoma, the anatomic location of the nasopharynx in close proximity to radiation-sensitive organs such as the salivary glands, optic nerves and chiasm, cochlea, brainstem and temporal lobes presents a special challenge. Technological approaches to reducing the morbidity of nasopharyngeal cancer irradiation have been historically successful with the evolution from 2D techniques to increasingly conformal forms of radiation therapy. This report reviews normal tissue dose constraints and major considerations in target delineation for patients with nasopharyngeal cancer in the intensity-modulated radiation therapy era...
November 23, 2016: Future Oncology
https://www.readbyqxmd.com/read/27872416/initial-experience-with-ultrasound-elastography-for-diagnosis-of-major-salivary-gland-lesions
#5
Hang Zhou, Xian-Li Zhou, Hui-Xiong Xu, Ya-Ping He, Xiao-Wan Bo, Xiao-Long Li, Bo-Ji Liu, Dan-Dan Li, Dan Wang
OBJECTIVES: The aim of this study was to evaluate the usefulness of ultrasound elastography, including conventional strain elastography, acoustic radiation force impulse (ARFI)-induced strain elastography, and point shear wave elastography (SWE) for diagnosis of major salivary gland lesions. METHODS: Forty major salivary gland lesions underwent conventional sonography, conventional strain elastography, ARFI strain elastography, and point SWE before surgery or biopsy...
December 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/27860388/enhanced-tissue-remodeling-efficacy-of-adipose-derived-mesenchymal-stem-cells-using-injectable-matrices-in-radiation-damaged-salivary-gland-model
#6
Jeong-Seok Choi, Hye-Young An, Hyun-Soo Shin, Young-Mo Kim, Jae-Yol Lim
The present study was conducted to introduce the use of a delivery carrier for local transplantation of human adipose tissue-derived mesenchymal stem cells (AdMSCs) into the salivary gland (SG) and analyze its ability to enhance radioprotection of AdMSCs against irradiation (IR)-induced damage. An injectable porcine small intestinal submucosa (SIS) matrix was used as a cell delivery carrier and human AdMSCs were contained within SIS hydrogel (AdMSC/SIS). After local injection into SGs of mice following local IR, morphological and functional changes were evaluated in the sham, vehicle (PBS), SIS, AdMSC, and AdMSC/SIS groups...
November 12, 2016: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/27858060/-effect-of-different-doses-of-radiation-on-human-salivary-gland-adenoid-cystic-carcinoma-cells
#7
Yu-Meng Huang, Ying Wang, Yong Li, Ping Liu, Xian-Feng Liu, Hong-Wei Zhao
PURPOSE: To explore the effect of different doses of radiation on human salivary gland adenoid cystic carcinoma cells (SACC-83, SACC-LM). METHODS: Different doses of radiation (0, 2, 4, 6, 8, 10 Gy) were applied to SACC-83, SACC-LM cells and the cells were continued to culture for 48 h. CCK-8 test, flow cytometry(FCM) and cell scratch experiment were used to observe cell proliferation, apoptosis and cell migration. SPSS19.0 software package was used for data analysis...
August 2016: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/27847831/relapsed-acinic-cell-carcinoma-of-the-parotid-gland-with-diffuse-distant-metastasis-case-report-with-literature-review
#8
Yousef Khelfa, Munthir Mansour, Yousef Abdel-Aziz, Ali Raufi, Krista Denning, Yehuda Lebowicz
Acinic cell carcinoma (ACC) is an uncommon salivary gland neoplasm that generally displays an indolent growth pattern. Most cases arise in the major glands, particularly the parotid. However, it can arise from minor salivary glands in the oral cavity and aero-digestive tract. Although ACC is generally a low-grade malignant tumor, poorly differentiated and high-grade transformed variants exhibit a propensity for late recurrence and metastasis. There are no adequate clinical trials that define the optimal approach to patients with metastatic salivary gland tumors due to its rarity...
October 2016: Journal of Investigative Medicine High Impact Case Reports
https://www.readbyqxmd.com/read/27846899/contribution-of-submandibular-gland-and-swallowing-structure-sparing-to-post-radiation-therapy-peg-dependence-in-oropharynx-cancer-patients-treated-with-split-neck-imrt-technique
#9
Michael F Gensheimer, Matthew Nyflot, George E Laramore, Jay J Liao, Upendra Parvathaneni
BACKGROUND: Radiation therapy-related dysphagia is worsened by xerostomia. The submandibular glands (SMG) produce saliva rich in lubricating mucins, and sparing the SMG has been shown to reduce xerostomia. The goal of this study was to determine whether SMG sparing IMRT is associated with reduced post-treatment PEG dependence in locally advanced oropharynx cancer patients. METHODS: Patients treated with definitive radiation therapy for oropharynx cancer were included in this retrospective study...
November 15, 2016: Radiation Oncology
https://www.readbyqxmd.com/read/27831763/thyroid-patient-salivary-radioiodine-transit-and-dysfunction-assessment-using-chewing-gums
#10
Demetrios Okkalides
Radiation-induced salivary gland dysfunction is the most frequent side-effect of I-131 thyroid therapy. Here, a novel saliva sampling method with ordinary chewing gums administered to the patients at appropriate time intervals post-treatment (TIPT) was used to relate this effect to chewing gum saliva activity (CGSA) content. Saliva samples were acquired after the oral administration of prescribed I-131 activity (radioactivity administered [RA]) to 19 differentiated thyroid cancer (DTC) and 16 hyperthyroidism patients of the radioisotope unit (RIU) during 2014 and 2015...
November 2016: Cancer Biotherapy & Radiopharmaceuticals
https://www.readbyqxmd.com/read/27824146/single-cell-clones-purified-from-human-parotid-glands-display-features-of-multipotent-epitheliomesenchymal-stem-cells
#11
TacGhee Yi, Songyi Lee, Nahyun Choi, Hyun-Soo Shin, Junghee Kim, Jae-Yol Lim
A better understanding of the biology of tissue-resident stem cell populations is essential to development of therapeutic strategies for regeneration of damaged tissue. Here, we describe the isolation of glandular stem cells (GSCs) from a small biopsy specimen from human parotid glands. Single colony-forming unit-derived clonal cells were isolated through a modified subfractionation culture method, and their stem cell properties were examined. The isolated clonal cells exhibited both epithelial and mesenchymal stem cell (MSC)-like features, including differentiation potential and marker expression...
November 8, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27806890/the-added-value-of-pretreatment-dw-mri-in-characterization-of-salivary-glands-pathologies
#12
Peter Milad, Marwa Elbegiermy, Tamer Shokry, Heba Mahmoud, Ihab Kamal, Mohamed Shehata Taha, Nermeen Keriakos
OBJECTIVE: To evaluate the added value of diffusion weighted magnetic resonance imaging (DW-MRI) in characterization of salivary gland lesions. STUDY DESIGN: A prospective study was carried out between January 2013, and March 2015. METHODS: The study included 46 patients. The consultant radiologist, who reviewed the scans to comment on the apparent diffusion coefficient (ADC) value and ADC histogram was blind to the suspected pathology. Radiological findings were then compared to clinical and histological findings...
September 7, 2016: American Journal of Otolaryngology
https://www.readbyqxmd.com/read/27790562/toxicity-profile-of-imrt-vs-3d-crt-in-head-and-neck-cancer-a-retrospective-study
#13
Gopa Ghosh, Ramanjis Tallari, Anupam Malviya
INTRODUCTION: Role of radiotherapy in comprehensive management of head and neck cancer for achieving tumour control and organ preservation is now well established and radiotherapy is routinely used in adjuvant setting after surgery, concurrently with chemotherapy or targeted agents and for palliation. Development of linear accelerator with Multileaf Collimator (MLC) have revolutionized radiation delivery techniques, allowing conformal and Intensity Modulated Radiotherapy (IMRT) to deliver highly conformal sculpted radiation dose to a very complex structure with improved sparing of adjoining critical structures like salivary glands, spinal cord, eyes, brainstem and larynx amounting to better therapeutic gain...
September 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27782913/post-therapeutic-dosimetry-of-177lu-dkfz-psma-617-in-the-treatment-of-patients-with-metastatic-castration-resistant-prostate-cancer
#14
Madhav P Yadav, Sanjana Ballal, Madhavi Tripathi, Nishikant A Damle, Ranjit K Sahoo, Amlesh Seth, Chandrasekhar Bal
OBJECTIVE: Lu-DKFZ-PSMA-617, a urea-based compound, binds to the extracellular domain of prostate-specific membrane antigen, thus providing an effective target for the treatment of metastatic castration-resistant prostate cancer (mCRPC). Before its therapeutic use, it is necessary that the radiation dosimetry of this radiopharmaceutical be studied to determine the safe activity that can be administered in patients to prevent haematological, renal and liver toxicity. The present study thus aimed to assess the pharmacokinetics and dosimetry of Lu-DKFZ-PSMA-617 in CRPC patients...
January 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/27762670/estimation-of-second-primary-cancer-risk-after-treatment-with-radioactive-iodine-for-differentiated-thyroid-carcinoma
#15
Nilton Lavatori Corrêa, Lidia Vasconcellos de Sá, Rossana Corbo Ramalho de Mello
BACKGROUND: An increase in the incidence of second primary cancers is the late effect of greatest concern that could occur in differentiated thyroid carcinoma (DTC) patients treated with radioactive iodine (RAI). The decision to treat a patient with RAI should therefore incorporate a careful risk-benefit analysis. The objective of this work was to adapt the risk-estimation models developed by the Biological Effects of Ionizing Radiation Committee to local epidemiological characteristics in order to assess the carcinogenesis risk from radiation in a population of Brazilian DTC patients treated with RAI...
November 21, 2016: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/27683041/preliminary-experience-with-dosimetry-response-and-patient-reported-outcome-after-177lu-psma-617-therapy-for-metastatic-castration-resistant-prostate-cancer
#16
Wolfgang P Fendler, Svenja Reinhardt, Harun Ilhan, Andreas Delker, Guido Böning, Franz J Gildehaus, Christian Stief, Peter Bartenstein, Christian Gratzke, Sebastian Lehner, Axel Rominger
Prostate cancer can be targeted by ligands to the prostate-specific membrane antigen (PSMA). We aimed to evaluate dosimetry, safety and efficacy of 177Lu-PSMA-617 radioligand therapy (RLT) in patients with metastatic castration-resistant prostate cancer (mCRPC).Fifteen patients each received two cycles of 3.7 GBq (n = 5) or 6.0 GBq (n = 10) 177Lu-PSMA-617 at an eight to ten weeks interval. For safety monitoring, each treatment was followed by dosimetry with serial quantitative SPECT as well as inpatient and outpatient recording of adverse events...
September 24, 2016: Oncotarget
https://www.readbyqxmd.com/read/27681761/methods-for-reducing-normal-tissue-complication-probabilities-in-oropharyngeal-cancer-dose-reduction-or-planning-target-volume-elimination
#17
Stuart E Samuels, Avraham Eisbruch, Karen Vineberg, Jae Lee, Choonik Lee, Martha M Matuszak, Randall K Ten Haken, Kristy K Brock
PURPOSE: Strategies to reduce the toxicities of head and neck radiation (ie, dysphagia [difficulty swallowing] and xerostomia [dry mouth]) are currently underway. However, the predicted benefit of dose and planning target volume (PTV) reduction strategies is unknown. The purpose of the present study was to compare the normal tissue complication probabilities (NTCP) for swallowing and salivary structures in standard plans (70 Gy [P70]), dose-reduced plans (60 Gy [P60]), and plans eliminating the PTV margin...
November 1, 2016: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/27681750/nicotinamide-phosphoribosyltransferase-upregulation-by-phenylephrine-reduces-radiation-injury-in-submandibular-gland
#18
Bin Xiang, Lichi Han, Xinyue Wang, Ling Tang, Kailiang Li, Xiuxiu Li, Xibo Zhao, Miaomiao Xia, Xixi Zhou, Fuyin Zhang, Ke Jian Liu
PURPOSE: Radiation therapy for head and neck cancer commonly leads to radiation sialadenitis. Emerging evidence has indicated that phenylephrine pretreatment reduces radiosensitivity in the salivary gland; however, the underlying cytoprotective mechanism remains unclear. Nicotinamide phosphoribosyltransferase (NAMPT) is not only a key enzyme for the nicotinamide adenine dinucleotide salvage pathway, but also a cytokine participating in cell survival, metabolism, and longevity, with a broad effect on cellular functions in physiology and pathology...
November 1, 2016: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/27674564/dynamic-changes-of-major-salivary-glands-during-head-and-neck-intensity-modulated-radiation-therapy
#19
B M Rabatic, D Zaenger, N A Madden, J A Marascio, K Ciarrocca, S DeRossi, A Amoush, A Al-Basheer, A Green, K Huang, C A Solares, M Groves, J K Byrd, J Brown, M Salgueiro, S Shaaban, M Pishgou, F Mott, C L Ferguson, W F Mourad
No abstract text is available yet for this article.
October 1, 2016: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/27674540/pretreatment-18-f-fdg-positron-emission-tomography-maximum-standardized-uptake-value-as-a-predictor-of-radiation-therapy-response-and-survival-for-patients-with-salivary-gland-carcinoma
#20
C E Hsieh, M J Lin, Y Y Wu, J T C Chang, K H Fan, C Y Lin, T M Hung, D L Tsan, B S Huang
No abstract text is available yet for this article.
October 1, 2016: International Journal of Radiation Oncology, Biology, Physics
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