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Salivary gland

Svitlana Veniaminivna Kolomiiets, Kristina Oleksandrivna Udaltsova, Tetiana Andriivna Khmil, Alina Mykolaiivna Yelinska, Olena Anatoliivna Pisarenko, Viktoriya Ihorivna Shynkevych
Sialolithiasis is one of the most common and extensively obstructive disorders of the major salivary glands. Here, we report 3 cases of sialolithiasis in the submandibular salivary gland showing symptomatic similarities to other dental and non-dental disorders of the maxillofacial area. How the various clinical features of this condition and findings on 3D-CT may lead to a misdiagnosis are also discussed. In the first case, that of a 45-year-old woman, a final diagnosis of a non-radiopaque submandibular sialolith allowed the initially indicated surgical extraction of a malerupted and semi-impacted right mandibular 3rd molar to be abandoned...
2018: Bulletin of Tokyo Dental College
Joao N A Ferreira, Changyu Zheng, Isabelle M A Lombaert, Corinne M Goldsmith, Ana P Cotrim, Jennifer M Symonds, Vaishali N Patel, Matthew P Hoffman
Head and neck cancer patients treated with irradiation often present irreversible salivary gland hypofunction for which no conventional treatment exists. We recently showed that recombinant neurturin, a neurotrophic factor, improves epithelial regeneration of mouse salivary glands in ex vivo culture after irradiation by reducing apoptosis of parasympathetic neurons. Parasympathetic innervation is essential to maintain progenitor cells during gland development and for regeneration of adult glands. Here, we investigated whether a neurturin-expressing adenovirus could be used for gene therapy in vivo to protect parasympathetic neurons and prevent gland hypofunction after irradiation...
June 15, 2018: Molecular Therapy. Methods & Clinical Development
Patricia Guzman Rojas, Jignesh Parikh, Priya Vishnubhotla, Jeannette Vergeli-Rojas
Adenoid cystic carcinoma (ACC) is an infrequent cause of malignancy that accounts for 1% of all tumors of the oral and maxillofacial region. We present a 59-year-old woman with a past medical history of adenoid cystic carcinoma of the left salivary gland treated with radiation and thoracotomy due to lung metastasis. Years after the onset of diagnosis, she presented with nonspecific gastrointestinal symptoms. For this reason, an abdominal computed tomography (CT) scan was done, revealing a liver mass in the right lobe, involving segments eight and five, concerning for malignancy...
January 18, 2018: Curēus
Gan Wang, Chengbo Long, Weihui Liu, Cheng Xu, Min Zhang, Qiong Li, Qiumin Lu, Ping Meng, Dongsheng Li, Mingqiang Rong, Zhaohui Sun, Xiaodong Luo, Ren Lai
Considering blood-sucking habits of leeches from surviving strategy of view, it can be hypothesized that leech saliva has analgesia or anesthesia functions for leeches to stay undetected by the host. However, no specific substance with analgesic function has been reported from leech saliva although clinical applications strongly indicated that leech therapy produces a strong and long lasting pain-reducing effect. Herein, a novel family of small peptides (HSTXs) including 11 members which show low similarity with known peptides was identified from salivary glands of the leech Haemadipsa sylvestris ...
2018: Frontiers in Pharmacology
Peisheng Liang, Wangyong Zhu, Tianjun Lan, Qian Tao
Saliva secretion disorder is one of the most common symptoms in primary Sjögren syndrome (pSS). Salivary biomarkers related to saliva secretion disorder were identified in a pSS murine model, NOD/ShiLtJ mouse, using differential proteomic analysis. Candidate biomarkers were screened with Kyoto Encyclopedia of Genes and Genomes pathway analysis and validated in saliva and salivary glands by western blotting and immunohistochemistry (IHC). Biological functions were detected using ingenuity pathway analysis (IPA)...
March 12, 2018: Journal of Pharmaceutical and Biomedical Analysis
Rebecca D Chernock, Eric J Duncavage
Salivary neuroendocrine carcinomas are rare and the overwhelming majority is high-grade. The parotid gland is the most commonly involved site followed by the submandibular gland. Most arise de novo but rare examples occurring as a high-grade transformation of another type of salivary gland neoplasm exist. There is significant morphologic and immunophenotypic overlap with neuroendocrine carcinomas of other sites, especially the skin. Like cutaneous neuroendocrine (or Merkel cell) carcinomas, approximately three-fourths are cytokeratin 20 positive...
March 20, 2018: Head and Neck Pathology
Stephen Keysar, Justin Eagles, Bettina Miller, Brian C Jackson, Farshad N Chowdhury, Julie Reisinger, Tugs-Saikhan Chimed, Phuong N Le, J Jason Morton, Hilary Somerset, Marileila Varella-Garcia, Aik-Choon Tan, John I Song, Daniel W Bowles, Mary E Reyland, Antonio Jimeno
PURPOSE: Salivary gland cancers (SGC) frequently present with distant metastases many years after diagnosis, suggesting a cancer stem cell (CSC) subpopulation that initiates late recurrences; however current models are limited both in their availability and suitability to characterize these rare cells. EXPERIMENTAL DESIGN: Patient-derived xenografts (PDX) were generated by engrafting patient tissue onto nude mice from one acinic cell carcinoma (AciCC), four adenoid cystic carcinoma (ACC), and three mucoepidermoid carcinoma (MEC) cases, which were derived from successive relapses from the same MEC patient...
March 19, 2018: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
Aigli G Vakrakou, Sorina Boiu, Panayiotis D Ziakas, Evangelia Xingi, Haralabia Boleti, Menelaos N Manoussakis
Sjögren's syndrome (SS) patients manifest high cell-free DNA (cf-DNA) levels in serum, associated with impaired DNaseI activity. Undegraded DNA may accumulate in tissues and act as an inflammasome-activating signal. Herein, we investigated the occurrence of aberrant DNA build-up in various biologic compartments of SS patients and its correlation with the activity of NLRP3 and AIM2 inflammasomes. For this purpose, we evaluated sera, PBMC, circulating monocytes and salivary glands (SG) from different SS patient subgroups and controls...
March 15, 2018: Journal of Autoimmunity
I P Baskova, S N Kalabushev, D N Akhaev, P A Bobrovsky, V A Manuvera, V N Lazarev
INTRODUCTION: Known thrombolytic agents either break peptide bonds in the fibrin molecule or act as plasminogen activators, which also results in peptide bond cleavage. In thrombi, fibrin molecules are known to be cross-linked by isopeptide bonds, the formation of which is mediated by factor XIIIa. In this work, we studied the dissolution of thrombi via isopeptide bond cleavage using a recombinant destabilase. Destabilase is an enzyme secreted from the medicinal leech salivary gland. This enzyme exhibits muramidase (lysozyme) activity, in addition to endo-ε-(γ-Glu)-Lys-isopeptidase activity, which is responsible for isopeptide bond cleavage...
March 12, 2018: Thrombosis Research
Pawel Sowa, Maciej Misiolek, Boguslawa Orecka, Eugeniusz Czecior, Monika Adamczyk-Sowa
OBJECTIVES: The aim of this study was to evaluate serum levels of adiponectin, leptin, visfatin and IL-6 in patients with pleomorphic adenoma, Warthin's tumor and acinic cell carcinoma of the parotid gland. MATERIALS AND METHODS: Venous blood samples were collected from 30 patients with pleomorphic adenoma, 21 patients with Warthin's tumor and 8 patients with acinic cell carcinoma. Serum adiponectin, leptin, visfatin, IL-6 and CRP concentrations were determined...
March 14, 2018: Cytokine
Keiko Aota, Koichi Kani, Tomoko Yamanoi, Koh-Ichi Nakashiro, Naozumi Ishimaru, Masayuki Azuma
CXCL10, a CXC chemokine induced by interferon-gamma [IFN-γ], has been observed in a wide variety of chronic inflammatory disorders and autoimmune conditions. Although CXCL10 is known to be overexpressed in the salivary glands of individuals with primary Sjögren's syndrome (pSS), it is unclear which cells produce CXCL10 under what types of stimulations. Here, we investigated the precise molecular mechanisms by which CXCL10 was produced in human salivary gland ductal (NS-SV-DC) and acinar (NS-SV-AC) cell lines...
March 17, 2018: Inflammation
Varankpicha Kochagul, Saralee Srivorakul, Kittikorn Boonsri, Chalermchart Somgird, Nattawooti Sthitmatee, Chatchote Thitaram, Kidsadagon Pringproa
Elephant endotheliotropic herpesvirus (EEHV) is one of the most devastating viral infectious diseases in elephants worldwide. To date, it remains unclear how elephants get infected by the virus, where the virus persists, and what mechanisms drive the pathogenesis of the disease. The present study was aimed to develop an antibody against glycoprotein B (gB) of EEHV, investigate the EEHV tissue tropisms, and provide the possible routes of EEHV transmission in Asian elephants. Samples from elephant organs that had died from EEHV1A and EEHV4 infections, peripheral blood mononuclear cells (PBMC) from EEHV4- and non-EEHV-infected calves were used in this study...
March 16, 2018: Scientific Reports
Ashutosh Rai, Sushil Sharma, Prabhat Shrivastava, Mangal Singh
The most common tumour of salivary gland is pleomorphic adenoma (PA). They are benign, painless, can grow into big tumours but usually do not affect nerves or lymph nodes. PA most commonly occurs in the parotid gland but it may involve submandibular, lingual and minor salivary glands also. They can attain giant proportions and weigh several kilograms. We report a giant PA arising in the submandibular gland and treated by complete surgical excision without any complication. A female patient presented with a tumour in the submandibular region and front of neck with a history of more than 18 years...
March 16, 2018: BMJ Case Reports
Elizabeth G Mosher, John A Butman, Les R Folio, Nadia M Biassou, Choonsik Lee
OBJECTIVE: Radiation exposure of the lens during neck CT may increase a patient's risk of developing cataracts. Radiologists at the National Institutes of Health worked with technicians to modify the neck CT scanning procedure to include a reduction in the scanning range, a reduction in the tube potential (kilovoltage), and a change in neck positioning using a head tilt. We objectively quantified the organ dose changes after this procedure modification using a computer simulation. MATERIALS AND METHODS: We retrospectively analyzed CT images of 40 patients (20 men and 20 women) scanned before and after the procedure change...
March 16, 2018: AJR. American Journal of Roentgenology
Kai Qian, Lu Di, Kai Guo, Xiaoke Zheng, Qinghai Ji, Zhuoying Wang
PURPOSE: Salivary duct carcinoma (SDC) is an aggressive malignancy that is not yet fully understood. We designed the present retrospective study to investigate the factors affecting the prognosis of SDC and the effects of adjuvant therapies on the clinical outcomes of patients. MATERIALS AND METHODS: Patients with SDC treated surgically from 2006 to 2016 were enrolled in the present retrospective cohort study. The demographic data, clinical pathologic characteristics, and follow-up results were recorded...
February 19, 2018: Journal of Oral and Maxillofacial Surgery
Martina Baneckova, Abbas Agaimy, Simon Andreasen, Tomas Vanecek, Petr Steiner, David Slouka, Tomas Svoboda, Marketa Miesbauerova, Michael Michal, Alena Skálová
Secretory carcinoma, originally described as mammary analog secretory carcinoma (MASC), is a low-grade salivary gland tumor characterized by a t(12;15)(p13;q25) translocation, resulting in an ETV6-NTRK3 gene fusion. Most MASCs are localized to the parotid gland and intraoral minor salivary glands. Moreover, ETV6-rearranged carcinomas with secretory features have been reported recently in the thyroid (with and without a history of radiation exposure), skin, and in very rare instances in the sinonasal tract. Here, we describe 2 cases of primary MASC in the sinonasal tract and provide a detailed clinical and histopathologic characterization of their morphology, immunohistochemical profile, and genetic background and highlight features allowing for its separation from its recently described molecular mimicker, ETV6-rearranged low-grade sinonasal adenocarcinoma...
March 14, 2018: American Journal of Surgical Pathology
Pamela Orjuela-Sanchez, Zaira Hellen Villa, Marta Moreno, Carlos Tong-Rios, Stephan Meister, Gregory M LaMonte, Brice Campo, Joseph M Vinetz, Elizabeth A Winzeler
To develop new drugs and vaccines for malaria elimination, it will be necessary to discover biological interventions, including small molecules that act against Plasmodium vivax exoerythrocytic forms. However, a robust in vitro culture system for P. vivax is still lacking. Thus, to study exoerythrocytic forms, researchers must have simultaneous access to fresh, temperature-controlled patient blood samples, as well as an anopheline mosquito colony. In addition, researchers must rely on native mosquito species to avoid introducing a potentially dangerous invasive species into a malaria-endemic region...
March 15, 2018: ACS Infectious Diseases
Yoko Endo, Ryuji Ohashi, Shunta Inai, Kazuhiko Yokoshima, Munenaga Nakamizo, Akira Shimizu, Kimihiro Okubo, Zenya Naito
Carcinosarcoma (CS) is a rare tumor, consisting of both carcinomatous and sarcomatous components. In this paper, we present a case of CS arising from a pleomorphic adenoma (PA) of the submandibular gland. A 64-year-old Japanese man presented with a left submandibular mass that had developed for 20 years with complaints of pain for the last 3 months. Magnetic resonance imaging showed a lesion involving the left submandibular gland. The patient underwent total dissection of the left submandibular gland and left cervical lymph nodes...
2018: Journal of Nippon Medical School, Nippon Ika Daigaku Zasshi
Gigliola Zanghì, Shruthi S Vembar, Sebastian Baumgarten, Shuai Ding, Julien Guizetti, Jessica M Bryant, Denise Mattei, Anja T R Jensen, Laurent Rénia, Yun Shan Goh, Robert Sauerwein, Cornelus C Hermsen, Jean-François Franetich, Mallaury Bordessoulles, Olivier Silvie, Valérie Soulard, Olivier Scatton, Patty Chen, Salah Mecheri, Dominique Mazier, Artur Scherf
Heterochromatin plays a central role in the process of immune evasion, pathogenesis, and transmission of the malaria parasite Plasmodium falciparum during blood stage infection. Here, we use ChIP sequencing to demonstrate that sporozoites from mosquito salivary glands expand heterochromatin at subtelomeric regions to silence blood-stage-specific genes. Our data also revealed that heterochromatin enrichment is predictive of the transcription status of clonally variant genes members that mediate cytoadhesion in blood stage parasites...
March 13, 2018: Cell Reports
Cheng-Chieh Hsu, Wing-Yin Li, Pen-Yuan Chu
RATIONALE: Salivary duct carcinoma (SDC) is a rare and aggressive subtype of salivary gland carcinoma that histologically resembles in situ and invasive ductal carcinoma of the breast. We present the first case of advanced SDC of the minor salivary gland arising from the supraglottis and review the literature on the clinicopathologic characteristics and prognosis of SDC. PATIENT CONCERNS: A 59-year-old male patient with progressive difficulty in swallowing and a muffled voice for 2 months...
March 2018: Medicine (Baltimore)
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