scholarly journals Evaluation of the Serum Level of High Mobility Group Box 1 Protein in Benign and Malignant Salivary Gland Tumors

2021 ◽  
Author(s):  
Maryam Mardani ◽  
Azadeh Andisheh Tadbir ◽  
Sadaf Pourshahian ◽  
Bijan Khademi ◽  
Mahyar Malekzadeh
Keyword(s):  
Salivary Gland ◽  
Serum Level ◽  
Malignant Tumors ◽  
Clinical Stage ◽  
High Mobility ◽  
Salivary Gland Tumors ◽  
High Mobility Group ◽  
Enzyme Linked Immunosorbent Assay ◽  
Clinical Value ◽  
Significant Difference

Despite a low prevalence, salivary gland tumors (SGTs) represent a diverse set of tumors with a broad range of biological behaviors. Implementation of early detection programs has significantly improved the outcome of treatment and patients' survival. High mobility group box one protein (HMGB1) may likely be a candidate for the detection of SGTs due to its background in other human tumors. This study, for the first time, aimed to investigate the clinical value of HMGB1 in patients with benign and malignant SGTs and analyze its correlation with clinicopathologic outcomes. Using an enzyme-linked immunosorbent assay (ELISA), the serum level of HMGB1 was measured in 85 patients with SGTs (30 benign and 55 malignant cases) and 85 age- and sex-matched healthy individuals. HMGB1 levels had a significant difference between patients with SGTs and healthy controls (2041.4±787.1 pg/ml versus 536.3±374.6 pg/ml, P<0.0001) as well as those with benign and malignant tumors (1680.1±429.7 pg/ml versus 2238.6±867.2 pg/ml, P<0.0001). The serum level of HMGB1 was associated with some clinicopathologic factors, such as the size of the main tumor, clinical stage, and the lymph node metastasis, but not with patients' gender, age as well as the site of the lesions. These results suggest that the serum level of HMGB1 has the potential to be a supportive diagnostic marker for SGTs and can provide a precise assessment of the tumor status. There is no published report regarding the serum level of HMGB1 in SGTs; therefore, further studies are warranted.

scholarly journals Clinicopathological study of salivary gland tumors: an assessment of 303 patients

2011 ◽  
Vol 27 (5) ◽  
pp. 1035-1040 ◽  
Author(s):  
Maria de Lourdes Silva de Arruda Morais ◽  
Paulo Roberto Azevedo ◽  
Cyntia Helena Carvalho ◽  
Lélia Medeiros ◽  
Tirzah Lajus ◽  
...  
Keyword(s):  
Salivary Gland ◽  
Disease Duration ◽  
Malignant Tumors ◽  
Salivary Gland Tumors ◽  
Clinical Aspects ◽  
Malignant Neoplasms ◽  
Common Mean ◽  
Significant Difference ◽  
Case Files ◽  
Tumor Consistency

Salivary gland neoplasms are remarkable for their histological diversity and several studies point to their varied occurrence in the population. Clinical aspects were histologically assessed to determine possible associations and define parameters to differentiate benign and malignant neoplasms. The case files of patients diagnosed with epithelial salivary gland tumors between 1989 and 2005 were reviewed. A majority (71%) of the 303 salivary gland tumors studied were benign and pleomorphic adenoma were found to be most common. Mean ages for patients with benign and malignant tumors were 49.2 and 58.5 years, respectively. A statistically significant difference between these tumors was observed for the following variables: mean age, tumor size and disease duration. A correlation was found between histological diagnosis and tumor consistency. The data presented here corroborate a number of previous studies and are therefore relevant in understanding the diverse characteristics exhibited by these tumors.

scholarly journals Association of plasma level of high-mobility group box-1 with necroptosis and sepsis outcomes

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Hongseok Yoo ◽  
Yunjoo Im ◽  
Ryoung-Eun Ko ◽  
Jin Young Lee ◽  
Junseon Park ◽  
...  
Keyword(s):  
Plasma Levels ◽  
Validation Cohort ◽  
High Mobility ◽  
Kinase Domain ◽  
High Mobility Group ◽  
Rank Test ◽  
Enzyme Linked Immunosorbent Assay ◽  
Derivation Cohort ◽  
The Difference

AbstractThe role of high-mobility group box-1 (HMGB1) in outcome prediction in sepsis is controversial. Furthermore, its association with necroptosis, a programmed cell necrosis mechanism, is still unclear. The purpose of this study is to identify the association between the plasma levels of HMGB1 and the severity and clinical outcomes of sepsis, and to examine the correlation between HMGB1 and key executors of necroptosis including receptor-interacting kinase 3 (RIPK3) and mixed lineage kinase domain-like- (MLKL) proteins. Plasma HMGB1, RIPK3, and MLKL levels were measured with the enzyme-linked immunosorbent assay from the derivation cohort of 188 prospectively enrolled, critically-ill patients between April 2014 and December 2016, and from the validation cohort of 77 patients with sepsis between January 2017 and January 2019. In the derivation cohort, the plasma HMGB1 levels of the control (n = 46, 24.5%), sepsis (n = 58, 30.9%), and septic shock (n = 84, 44.7%) groups were significantly increased (P < 0.001). A difference in mortality between high (≥ 5.9 ng/mL) and low (< 5.9 ng/mL) HMGB1 levels was observed up to 90 days (Log-rank test, P = 0.009). There were positive linear correlations of plasma HMGB1 with RIPK3 (R2 = 0.61, P < 0.001) and MLKL (R2 = 0.7890, P < 0.001). The difference in mortality and correlation of HMGB1 levels with RIPK3 and MLKL were confirmed in the validation cohort. Plasma levels of HMGB1 were associated with the severity and mortality attributed to sepsis. They were correlated with RIPK3 and MLKL, thus suggesting an association of HMGB1 with necroptosis.

scholarly journals High Mobility Group Box 1: a Novel Host Restriction Factor in Zika Virus Replication

2021 ◽  
Author(s):  
Kim-Ling Chin ◽  
Nurhafiza binti Zainal ◽  
Sing-Sin Sam ◽  
Pouya Hassandarvish ◽  
Rafidah Lani ◽  
...  
Keyword(s):  
Zika Virus ◽  
Severe Disease ◽  
High Mobility ◽  
High Mobility Group ◽  
Enzyme Linked Immunosorbent Assay ◽  
Dependent Manner ◽  
Zikv Infection ◽  
Hmgb1 Level ◽  
Antiviral Effects ◽  
Huh7 Cells

Abstract Neonatal microcephaly and adult Guillain-Barré syndrome are severe complications of Zika virus (ZIKV) infection. The robustly induced inflammatory cytokine expressions in ZIKV-infected patients may constitute a hallmark for severe disease. In the present study, the potential role of high mobility group box 1 protein (HMGB1) in ZIKV infection was investigated. HMGB1 protein expression was determined by the enzyme-linked immunosorbent assay (ELISA) and immunoblot assay. HMGB1’s role in ZIKV infection was also explored using treatment with dexamethasone, an immunomodulatory drug. Antiviral effects of dexamethasone treatment on both wild-typed (WT) and HMGB1-knockdown (shHMGB1) Huh7 cells were determined by the focus-forming assay. Results showed that the Huh7 cells were highly susceptible to ZIKV infection. The infection was found to induce HMGB1 nuclear-to-cytoplasmic translocation, resulting in a >99% increase in the cytosolic HMGB1 expression at 72h.p.i. The extracellular HMGB1 level was elevated in a time- and multiplicity of infection (MOI)- dependent manner. Dexamethasone 150 µM treatment of the ZIKV-infected cells reduced HMGB1 extracellular release in a dose-dependent manner, with a maximum reduction of 71 ± 5.84% (p < 0.01). The treatment also reduced virus titers by over 83 ± 0.50% (p < 0.01). The antiviral effects, however, was not observed in the dexamethasone-treated HMGB1-knockdown cells, suggesting the importance of the intracellular HMGB1 in ZIKV infection. Overall, these results suggest that translocation of HMGB1 occurred during ZIKV infection and inhibition of the translocation reduced ZIKV replication. These findings highlight the potential of developing therapeutics against ZIKV infection by affecting the translocation of HMGB1 from the nucleus to the cytoplasm.

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.

scholarly journals The Association Between Serum Levels of Leptin and Lipid Profiles in Cardiovascular Patients With Valve Calcification

2020 ◽  
Author(s):  
Ramin Lotfi ◽  
Mohsen Molaie ◽  
Ehsan Mohammadi Noori ◽  
Khalil Soleiman ◽  
Amir Kiani
Keyword(s):  
Serum Level ◽  
Energy Homeostasis ◽  
Serum Levels ◽  
Lipid Profiles ◽  
Enzyme Linked Immunosorbent Assay ◽  
Serum Concentrations ◽  
Valve Calcification ◽  
Serum Leptin ◽  
Significant Difference ◽  
Lipid Abnormalities

Adipose tissue-derived hormones known as adipokines, like leptin, have multiple bioactions. Notwithstanding the key roles of leptin in regulating energy homeostasis and metabolism, its cardiovascular functions are complex and not fully understood. This study aimed to investigate the association between serum concentrations of leptin and lipid profiles in patients with valve calcification. Seventy-two patients with valve calcification and 72 healthy individuals participated in this case-control study. The serum levels of biochemical markers and leptin were measured by the standard enzymatic methods and enzyme-linked immunosorbent assay (ELISA) technique, respectively. Significantly increased serum concentrations of FBS (P=0.001), urea (P<0.0001), creatinine (P=0.018), P (P<0.0001), LDL-C (P=0.011) and lower Ca (P=0.006), and HDL-C (P<0.0001) levels were observed in patients compared to controls. There was no significant difference in the serum level of TG and TC of patients than controls. Systolic and diastolic blood pressures were significantly increased in patients relative to controls (P<0.0001). However, a significantly diminished serum level of leptin was observed in patients than controls (P<0.0001). The correlation analysis demonstrated that the serum leptin concentration is negatively correlated with creatinine, but it is positively correlated with systolic blood pressure (P=0.0302, P=0.0362, respectively). There was no statistically significant association between serum levels of leptin and lipid profiles. Our findings indicated dyslipidemia and reduced serum leptin concentrations in patients with valve calcification, suggesting the role of lipid abnormalities and reduced leptin levels in the development and pathogenesis of valve calcification diseases.

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.

Serum soluble interleukin-2 receptors in epithelial ovarian cancer patients

1995 ◽  
Vol 10 (2) ◽  
pp. 75-80 ◽  
Author(s):  
N.A. Pavlidis ◽  
E. Bairaktari ◽  
J. Kalef-Ezra ◽  
C. Nicolaides ◽  
C. Seferiadis ◽  
...  
Keyword(s):  
Ovarian Cancer ◽  
Serum Level ◽  
Cancer Patients ◽  
Clinical Stage ◽  
Immune Surveillance ◽  
Interleukin 2 ◽  
Patient Treatment ◽  
Response To Chemotherapy ◽  
Significant Difference ◽  
Normal Controls

The levels of soluble interleukin-2 receptors (sIL-R2) were measured in the serum of 52 patients with epithelial ovarian carcinoma as well as in 25 age and sex-matched normal controls. The mean serum level of sIL-2R was increased in 37 patients (71.2%). Comparison of these levels to those of normal controls showed a highly statistically significant difference (p<0.001). Serum sIL-2R levels were not related to histology, clinical stage or the presence of ascites (p-0.58, p=0.32 and p=0.67, respectively), nor did they follow disease activity or response to chemotherapy. However, patients with higher pretreatment sIL-2R levels (more than 1200 U/ml) were found to have a longer survival (p<0.02), possibly explained by the presence of activated lymphocytes and a better immune surveillance. We conclude that the serum level of sIL-2R: a) is elevated in ovarian cancer patients, b) has no relationship with histological subtypes, tumor burden or the presence of ascites, c) cannot serve as a valuable tumor marker for the monitoring of patient treatment, and d) has a prognostic value for survival.

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 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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