Human Kallikrein 14 (Klk14) Expression in Salivary Gland Tumors

2010 ◽  
Vol 25 (1) ◽  
pp. 32-37 ◽  
Author(s):  
Nelly N. Hashem ◽  
Thomas W. Mara ◽  
Mohamed Mohamed ◽  
Irene Zhang ◽  
Kevin Fung ◽  
...  
Keyword(s):  
Salivary Gland ◽  
Salivary Glands ◽  
Malignant Tumors ◽  
Expression Profiles ◽  
Staining Technique ◽  
Tumor Stage ◽  
Salivary Gland Tumors ◽  
Immunoperoxidase Staining ◽  
Clinical Parameters ◽  
Ductal Cells

Objective To analyze the expression of human kallikrein 14 (KLK14) in salivary gland tumors. Methods A standard immunoperoxidase staining technique was used to assess the expression profile of KLK14 in normal salivary glands and tumors including pleomorphic adenoma (PA; n=17), adenoid cystic carcinoma (ACC; n=13) and mucoepidermoid carcinoma (MEC; n=9). Tumor stage, grade, patient age and gender, and site of occurrence were recorded. These clinical parameters were correlated with KLK14 levels in malignant tumors. The expression profiles for KLK3, 5, 6, 8 and 13 were also retrieved. Results Normal salivary glands, PA, ACC and MEC showed strong expression of KLK14 in ductal and non-ductal cells. Both PA and ACC showed higher KLK14 levels than normal glands and MEC tissues. There were no statistically significant associations between levels of KLK14 and clinical parameters. Conclusions The differences in the levels of KLK14 suggest that KLKs may aid in the differential diagnosis of salivary gland tumors. The coexpression of KLKs suggests their possible involvement in an enzymatic pathway activated in salivary gland. KLK14 may be a promising new biomarker in salivary gland tumors.

scholarly journals Epidemiologic Characteristics of Salivary Gland Tumors in an Iranian Population

2021 ◽  
Vol In Press (In Press) ◽  
Author(s):  
Nafise Shamloo ◽  
Alireza Ghanadan ◽  
Fahimeh Sadat Hashemian ◽  
Maedeh Ghorbanpour
Keyword(s):  
Salivary Gland ◽  
Adenoid Cystic Carcinoma ◽  
Salivary Glands ◽  
Pleomorphic Adenoma ◽  
Malignant Tumors ◽  
The Body ◽  
Salivary Gland Tumors ◽  
Benign Tumors ◽  
Cross Sectional ◽  
Adenoid Cystic

Background: Salivary gland tumors include a wide variety of benign and malignant tumors in the oral and maxillofacial region. Although these tumors are not common, they are not rare. The prevalence of these tumors varies with regard to age, gender, and their location in the body. Objectives: This study aimed to evaluate the frequency of benign and malignant salivary gland tumors in patients referred to three referral hospitals in Tehran, Iran. Methods: This retrospective cross-sectional study examined the demographic and pathologic records of the patients with salivary gland tumors submitted to the Department of Pathology of Amir Alam, Loghman Hakim, and Shohada Hospitals from 2005 to 2016. In this study, the histological variants of salivary gland tumors and clinical parameters such as age, gender, and the location of the tumor were examined. The clinical data were analyzed using SPSS software version 21. Results: Of 137632 patient records, 1180 cases were salivary gland tumors. Pleomorphic adenoma in 794 cases (67.3%) and adenoid cystic carcinoma in 109 cases (9.2%) were the most common tumors, respectively. Salivary gland tumors were more common in males, and the participants’ mean age was 42.86 ± 16.5 years. The most common site was parotid and minor salivary glands, with 937 (79.4%) and 137 (12%) cases, respectively. Conclusions: In this study, the most common benign tumor was pleomorphic adenoma in the parotid gland, and the most common malignant tumor was adenoid cystic carcinoma in the major salivary glands. Furthermore, benign tumors were more frequent than malignant tumors.

Clinical and own experience in the treatment of major salivary gland tumors

2020 ◽  
Vol 74 (2) ◽  
pp. 1-5
Author(s):  
Anna Jałocha-Kaczka ◽  
Katarzyna Kolary-Siekierska ◽  
Jarosław Miłoński ◽  
Jurek Olszewski
Keyword(s):  
Salivary Gland ◽  
Salivary Glands ◽  
Malignant Tumors ◽  
Salivary Gland Tumors ◽  
Major Salivary Gland ◽  
Tubular Adenoma ◽  
Benign Neoplasms ◽  
Warthin Tumor ◽  
Superficial Lobe ◽  
Extracapsular Dissection

Introduction: The paper aims to demonstrate the Clinic’s and own research in the treatment of major salivary gland tumors. Material and method: In the years 2013–2019, there were 95 salivary gland surgeries, including 45 performed in women (47.36%) aged between 24 and 82 and in 50 men (52.64%) aged 29 to 86. Diagnostics of major salivary glands included: patient history, otolaryngological examination, ultrasound and fine needle aspiration (BACC) (of tumor), laboratory tests (morphology, CRP) and computed tomography (CT) or magnetic resonance imaging (MRI) to accurately assess salivary glands, location of lesion and lymph nodes prior to elective surgery. Research results: In the analyzed material patients with major salivary gland tumors were most frequently operated on at the age of 61–70 (34.7%) and 51–60 years (23.2%). Most patients with tumors were hospitalized in the last 4 years between 2016–2019, which accounted for 77.8% of all operated cases. Among the operated lesions, benign neoplasms and tumors occurred in 93.7%, of which the most frequent findings in histopathological examination were Warthin tumor in 50.5%, and multiform adenoma in 26.3%. The remaining tumors and benign neoplasms constituted only 16.9% and were observed in isolated cases, including eosinophilic adenoma, lymphoepithelial cyst, myoepithelial adenoma, lipofibrosarcoma, congestive cyst, air cyst, tubular adenoma, basal cell carcinoma, cyst with squamous metaplasia features, vascular malformation. Malignant salivary gland tumors were found in 6.3%, including the following malignant tumors were revealed histopathologically: adenocarcinoma, mucoepidermal carcinoma, acinocellular carcinoma, epithelialmyoepithelial carcinoma, ductal carcinoma. Conclusions: The majority of operated salivary gland tumors were benign (93.7%), of which the most common histopathologically were: Warthin tumor (50.5%) and multiform adenoma (26.3%), while malignant tumors occurred in 6.3%. Tumors were localized mainly in the parotid gland in as many as 93.7% cases, of which the most common localization concerned the superficial lobe in 56.8%. The most frequent surgical technique used in the Clinic was extracapsular dissection of the tumor in 88.4%, and other methods were used rarely.

scholarly journals Neurofibromin expression by normal salivary glands

2021 ◽  
Vol 17 (1) ◽  
Author(s):  
Eloá Borges Luna ◽  
Pâmella Pinho Montovani ◽  
Rafaela Elvira Rozza-de-Menezes ◽  
Karin Soares Cunha
Keyword(s):  
Salivary Gland ◽  
Salivary Glands ◽  
Acinar Cells ◽  
Staining Intensity ◽  
Neurofibromatosis 1 ◽  
Tissue Type ◽  
Sublingual Gland ◽  
Minor Salivary Glands ◽  
Expression Levels ◽  
Ductal Cells

AbstractIntroductionNeurofibromin, a protein encoded by theNF1gene, is mutated in neurofibromatosis 1, one of the most common genetic diseases. Oral manifestations are common and a high prevalence of hyposalivation was recently described in individuals with neurofibromatosis 1. Although neurofibromin is ubiquitously expressed, its expression levels vary depending on the tissue type and developmental stage of the organism. The role of neurofibromin in the development, morphology, and physiology of salivary glands is unknown and a detailed expression of neurofibromin in human normal salivary glands has never been investigated.AimTo investigate the expression levels and distribution of neurofibromin in acinar and ductal cells of major and minor salivary glands of adult individuals without NF1.Material and methodTen samples of morphologically normal major and minor salivary glands (three samples of each gland: parotid, submandibular and minor salivary; and one sample of sublingual gland) from individuals without neurofibromatosis 1 were selected to assess neurofibromin expression through immunohistochemistry. Immunoquantification was performed by a digital method.ResultsNeurofibromin was expressed in the cytoplasm of both serous and mucous acinar cells, as well as in ducts from all the samples of salivary glands. Staining intensity varied from mild to strong depending on the type of salivary gland and region (acini or ducts). Ducts had higher neurofibromin expression than acinar cells (p = 0.003). There was no statistical association between the expression of neurofibromin and the type of the salivary gland, considering acini (p = 0.09) or ducts (p = 0.50) of the four salivary glands (parotid, submandibular, minor salivary, and sublingual gland). Similar results were obtained comparing the acini (p = 0.35) and ducts (p = 0.50) of minor and major salivary glands. Besides, there was no correlation between the expression of neurofibromin and age (p = 0.08), and sex (p = 0.79) of the individuals, considering simultaneously the neurofibromin levels of acini and duct (n = 34).ConclusionNeurofibromin is expressed in the cytoplasm of serous and mucous acinar cells, and ductal cells of salivary glands, suggesting that this protein is important for salivary gland function.

Kallikrein-related peptidase 10 expression in salivary gland tissues and tumours

2012 ◽  
Vol 27 (4) ◽  
pp. 381-388 ◽  
Author(s):  
Mark R. Darling ◽  
Nelly N. Hashem ◽  
Irene Zhang ◽  
Mohamed Mohamed ◽  
Kevin Fung ◽  
...  
Keyword(s):  
Salivary Gland ◽  
Adenoid Cystic Carcinoma ◽  
Salivary Glands ◽  
Pleomorphic Adenoma ◽  
Mucoepidermoid Carcinoma ◽  
Salivary Gland Tumour ◽  
Immunoperoxidase Staining ◽  
Aberrant Expression ◽  
Adenoid Cystic ◽  
Gland Tumour

Objectives Kallikrein-related peptidase 10 (KLK10) has been implicated in the development of several types of cancer. The purpose of this study was to analyze the expression of KLK10 in 3 types of salivary gland tumour and normal salivary glands. Materials and methods: A standard immunoperoxidase staining technique was used to assess the Immunoexpression profile of KLK10 in normal salivary glands and 3 types of salivary gland tumour: pleomorphic adenoma, adenoid cystic carcinoma and mucoepidermoid carcinoma. Results Pleomorphic adenomas showed significantly lower KLK10 levels than control tissues. Neither of the malignant tumours (adenoid cystic carcinoma and mucoepidermoid carcinoma) showed a significant alteration in the immunoreactive scores of KLK10 in comparison with the normal salivary gland tissues. KLK10 immunoreactive scores were comparable in adenoid cystic carcinoma and mucoepidermoid carcinoma. Pleomorphic adenoma had significantly lower levels of KLK10 than mucoepidermoid carcinoma. Conclusions The finding of lower KLK10 levels in pleomorphic adenoma suggests aberrant expression in a tumour that develops primarily from myoepithelial cells. A kallikrein cascade may play a role in the development and/or outcome of some salivary gland tumours.

scholarly journals Salivary Gland Pathologies

2021 ◽  
pp. 939-973
Author(s):  
Nisheet Anant Agni
Keyword(s):  
Salivary Gland ◽  
Salivary Glands ◽  
Malignant Tumors ◽  
Inflammatory Conditions ◽  
Major Salivary Glands

AbstractSaliva is responsible for various functions from lubrication to digestion. The saliva is secreted by numerous minor and major salivary glands. These salivary glands are sometimes affected by various local and systemic inflammatory conditions, obstructive pathologies with benign and malignant tumors. This chapter deals with various pathologies of salivary glands and their management.

SPM Receptor Expression and Localization in Irradiated Salivary Glands

2021 ◽  
Vol 69 (8) ◽  
pp. 523-534
Author(s):  
Harim Tavares dos Santos ◽  
Kihoon Nam ◽  
Jason P. Hunt ◽  
Luke O. Buchmann ◽  
Marcus M. Monroe ◽  
...  
Keyword(s):  
Radiation Therapy ◽  
Salivary Gland ◽  
Salivary Glands ◽  
Artificial Saliva ◽  
Receptor Expression ◽  
Lipid Mediator ◽  
Resolution Of Inflammation ◽  
Ductal Cells ◽  
Alternative Measures ◽  
And Function

Radiation therapy–mediated salivary gland destruction is characterized by increased inflammatory cell infiltration and fibrosis, both of which ultimately lead to salivary gland hypofunction. However, current treatments (e.g., artificial saliva and sialagogues) only promote temporary relief of symptoms. As such, developing alternative measures against radiation damage is critical for restoring salivary gland structure and function. One promising option for managing radiation therapy–mediated damage in salivary glands is by activation of specialized proresolving lipid mediator receptors due to their demonstrated role in resolution of inflammation and fibrosis in many tissues. Nonetheless, little is known about the presence and function of these receptors in healthy and/or irradiated salivary glands. Therefore, the goal of this study was to detect whether these specialized proresolving lipid mediator receptors are expressed in healthy salivary glands and, if so, if they are maintained after radiation therapy–mediated damage. Our results indicate that specialized proresolving lipid mediator receptors are heterogeneously expressed in inflammatory as well as in acinar and ductal cells within human submandibular glands and that their expression persists after radiation therapy. These findings suggest that epithelial cells as well as resident immune cells represent potential targets for modulation of resolution of inflammation and fibrosis in irradiated salivary glands.

Dendritic Interstitial and Myofibroblastic Cells at the Border of Salivary Gland Tumors

2001 ◽  
Vol 125 (2) ◽  
pp. 232-236
Author(s):  
Lori Soma ◽  
Virginia A. LiVolsi ◽  
Zubair W. Baloch
Keyword(s):  
Smooth Muscle ◽  
Salivary Gland ◽  
Malignant Tumors ◽  
Smooth Muscle Actin ◽  
Staining Intensity ◽  
Interstitial Cells ◽  
Salivary Gland Tumors ◽  
Benign Tumors ◽  
Low Grade ◽  
Muscle Actin

Abstract Objective.—CD34-positive dendritic interstitial cells may be associated with the regulation of tumor growth. This association has been studied in various human neoplasms, especially skin tumors. In this study, we evaluated the distribution of dendritic interstitial cells and myofibroblastic cells at the tumor periphery of various benign and malignant salivary gland neoplasms. Methods.—Forty-nine cases of salivary gland tumors were selected: 16 pleomorphic adenomas, 12 Warthin tumors, 8 polymorphous low-grade tumors, 5 adenoid cystic carcinomas, 6 acinic cell carcinomas, and 2 mucoepidermoid carcinomas. Immunohistochemical analysis was performed by using antibodies for CD34 (dendritic cells) and α-smooth muscle actin (myofibroblast) on formalin-fixed, paraffin-embedded archival tissue. Staining intensity was graded as marked (3+), moderate (2+), weak (1+), and absent (0). Results.—Staining intensity for CD34 was 3+ in 24 (86%) of 28 benign tumors (pleomorphic adenomas and Warthin tumors) and 6 (29%) of 21 malignant tumors (polymorphous low-grade tumors, acinic cell carcinomas, adenoid cystic carcinomas, and mucoepidermoid carcinomas) and 2+ in 4 (19%) of 21 malignant tumors. None of the benign tumors displayed 2+ staining with CD34. Three (11%) of 28 benign and 11 (52%) of 21 of malignant tumors failed to stain with CD34. α-Smooth muscle actin staining was 3+ in 10 (36%) of 28 benign tumors and 6 (29%) of 21 malignant tumors, and 2+ in 11 (39%) of 28 benign and 2 (9%) of 21 malignant tumors. Five (18%) of 28 benign and 11 (52%) of 21 malignant tumors failed to stain with α-smooth muscle actin. Conclusion.—We conclude that the dendritic interstitial cells and myofibroblastic cells may be associated with the regulation of tumor growth in salivary gland tumors.

CLINICOPATHOLOGICAL STUDY ON RARE MALIGNANT TUMORS OF PAROTID GLAND AND COMPREHENSIVE REVIEW ON NEWER ENTITIES OF SALIVARY GLAND TUMORS

2021 ◽  
pp. 35-40
Author(s):  
Veena B Ganga ◽  
Krishnappa Krishnappa
Keyword(s):  
Salivary Gland ◽  
Malignant Tumors ◽  
Treatment Strategies ◽  
Salivary Gland Tumors ◽  
Term Survival ◽  
Comprehensive Review ◽  
Parotid Tumors ◽  
Time Period ◽  
Classi Cation

Salivary gland tumors are a heterogeneous group of tumors in the head and neck; most of the malignant tumors have a poor prognosis and limited long-term survival. The recent 2017 WHO classication had made few changes in the sub-categorization and modied some terms. More studies are underway in the eld of molecular level changes and responses to targeted therapies in these tumors. These researches have shown some resemblance in the behavior of salivary gland and breast carcinomas, leading to a new line of thinking in terms of hormonal therapy. This study outlines 14 cases of rare parotid tumors reported in our institute during the time period of 2018 to 2020 and a comprehensive review on salivary gland tumors, newer entities added, and newer treatment strategies.

scholarly journals Primary Salivary Gland Tumors- A two years study at Nobel Medical College

2019 ◽  
Vol 2 (2) ◽  
pp. 234-238
Author(s):  
Niraj Nepal ◽  
Prabesh Kumar Choudhary ◽  
Manish Kumar Das ◽  
Meenakshi Basnet ◽  
Sagar Paudel
Keyword(s):  
Salivary Gland ◽  
Pleomorphic Adenoma ◽  
Mucoepidermoid Carcinoma ◽  
Malignant Tumors ◽  
Age Groups ◽  
Salivary Gland Tumor ◽  
Salivary Gland Tumors ◽  
Parotid Glands ◽  
Gland Tumor ◽  
Medical College

Introduction: Salivary gland tumors are a heterogeneous group of neoplasms that are relatively rare but represent a wide variety of both benign and malignant histopathologic subtypes. The aim of this study was to find out the histopathological distribution of primary salivary gland tumors and correlate fine needle aspiration cytology reports with histological findings.Materials and Methods: A total of 83 patients attending the otorhinolaryngology department with salivary gland tumors were enrolled in our study. The histopathological findings were reported and correlated with cytological findings.Results: The mean age of the patient with salivary tumors was 43.11 ± 13.02 years. Out of 83 cases, 3 (3.6%) patients were diagnosed as inflammatory lesions, 64 (77.1%) patients had benign salivary gland tumors and 16 (19.3%) of patients had malignant salivary glands tumors in histopathology. The sensitivity and specificity of FNAC in this series for detecting salivary gland malignancy were 68.8% and 98.5% respectively with an overall diagnostic accuracy of 92.8%. The most common salivary gland tumor was found to be pleomorphic adenoma (56.6%) and the most common malignant salivary gland tumor was found to be mucoepidermoid carcinoma (19.3%). The comparison of the incidence of salivary gland tumors in various age groups showed a statisticallysignificant difference (p=0.009).  Conclusions: Benign salivary tumors are more common than malignant tumors with the most common occurrence in parotid glands. Pleomorphic adenoma is the most common benign tumor whereas; mucoepidermoid carcinoma is the most common malignant tumor in patients visiting Nobel medical college.

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