Biology & Genetic
Ali Zare-Mirzaie; Shamim Mollazadehghomi; Seyed Mohammad Heshmati; Amirhosein Mehrtash; Shabnam Mollazadehghomi
Abstract
Background & Objective: Telomere-related tumorigenesis mechanisms in the salivary gland, including mutation in the promoter region of TERT, have been rarely investigated. Therefore, the present study aimed to investigate the mutation in the promoter region of TERT in benign and malignant salivary ...
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Background & Objective: Telomere-related tumorigenesis mechanisms in the salivary gland, including mutation in the promoter region of TERT, have been rarely investigated. Therefore, the present study aimed to investigate the mutation in the promoter region of TERT in benign and malignant salivary gland tumors.Methods: This was a descriptive-analytical cross-sectional study. Tissue samples of 54 patients with primary salivary gland tumors sent to the pathology department of Rasool-e-Akram Hospital from September 2017 to September 2021 were examined. Fifteen samples including two groups of the most common benign tumors (n=5; 3 pleomorphic adenomas and 2 Warthin tumors) and four groups of the most common malignant tumors (n=10; 3 mucoepidermoid carcinomas, 3 adenoid cystic carcinomas, 2 acinic cell carcinoma, and 2 salivary duct carcinoma) were selected. The promoter region of TERT, including well-known hot spot regions, is sequenced using the Sanger sequencing method. Data were analyzed using statistical software R version 4.1.2.Results: Of 15 salivary gland tumor specimens, consisting of 5 benign tumors and 10 malignant tumors after DNA sequencing, TERT promoter region mutation was only seen in one of the adenoid cystic carcinoma samples, located at -146 bp upstream from ATG (chr5: 1,295,250 C>T).Conclusion: TERT promoter mutation was not different in malignant and benign salivary tumors. Nonetheless, there are a few studies that report TERT promoter mutation in adenoid cystic carcinoma of the salivary gland, necessitating the need for further investigations.
Molecular Pathology
Maryam Sotoudeh Anvari; Atoosa Gharib; Maryam Abolhasani; Aileen Azari-Yaam; Farzaneh Hossieni Gharalari; Moeinadin Safavi; Ali Zare-Mirzaie; Mohammad Vasei
Abstract
Molecular assays for detection of nucleic acids in biologic specimens are valuable diagnostic tools supporting clinical diagnoses and therapeutic decisions. Pre-analytical errors, which occur before or during processing of nucleic acid extraction, contribute a significant role in common errors which ...
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Molecular assays for detection of nucleic acids in biologic specimens are valuable diagnostic tools supporting clinical diagnoses and therapeutic decisions. Pre-analytical errors, which occur before or during processing of nucleic acid extraction, contribute a significant role in common errors which take place in molecular laboratories. Certain practices in specimen collection, transportation, and storage can affect the integrity of nucleic acids before analysis. Applying best practices in these steps, helps to minimize those errors and leads to better decisions in patient diagnosis and treatment. Widely acceptable recommendations, which are for optimal molecular assays associated with pre-analytic variables, are limited. In this article, we have reviewed most of the important issues in sample handling from bed to bench before starting molecular tests, which can be used in diagnostic as well as research laboratories. We have addressed the most important pre-analytical points in performing molecular analysis in fixed and unfixed solid tissues, whole blood, serum, plasma, as well as most of the body fluids including urine, fecal and bronchial samples, as well as prenatal diagnosis samples.
Molecular Pathology
Navid Bazzaz; Nazila Nouraee Nouraee; Ali Zare-Mirzaie; Seyed Javad Mowla Mowla; Maryam Shahali; Mohammad Vasei
Volume 13, Issue 4 , October 2018, , Pages 422-428
Abstract
Background and Objective: Wilms’ tumor (WT) is the most common genitourinary tract tumor in children. MicroRNAs (miRNAs) are small non-coding RNAs; their role in the pathogenesis of many types of human cancers has been identified. We aimed to evaluate the expression of miR-21, a well-known oncomir, ...
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Background and Objective: Wilms’ tumor (WT) is the most common genitourinary tract tumor in children. MicroRNAs (miRNAs) are small non-coding RNAs; their role in the pathogenesis of many types of human cancers has been identified. We aimed to evaluate the expression of miR-21, a well-known oncomir, in WT tissue samples which is a very common urinary tract malignancy in children. Methods: We performed chromogenic in situ hybridization (CISH) to detect the sub-cellular localization of miR-21 in 25 formalin-fixed, paraffin-embedded (FFPE) samples of WT. We also evaluated miR-21 expression in 24 of these blocks and 6 normal kidneys as controls using quantitative real-time PCR technique. Results: While our real-time PCR analysis showed miR-21 significant overexpression in 4 tumors compared to the normal kidney samples, we could not detect significant ISH signal in any of these samples. Conclusion: Low expression of miR-21 in WT might pinpoint the weak involvement of this miRNA in the pathogenesis of this cancer.
Ali Zare-Mirzaie; Behrang Kazeminezhad; Mona Akbari Ghouchani
Abstract
Background& Objective: Increase in intra- and extracellular glucose levels can cause oxidative stress, and the prolonged imbalance between prooxidants and antioxidantscan lead to cell damage and the associated complications in patients with diabetes. Vitamin D acts as a strong antioxidant in ...
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Background& Objective: Increase in intra- and extracellular glucose levels can cause oxidative stress, and the prolonged imbalance between prooxidants and antioxidantscan lead to cell damage and the associated complications in patients with diabetes. Vitamin D acts as a strong antioxidant in the body and several studies emphasized on its important role to prevent oxidative stress in prediabetic and diabetic subjects. The current study aimed at determining and comparing the total antioxidant capacity (TAC) in individuals with hemoglobin A1c (HbA1c) below and above 6.5%, and its correlation with vitamin D levels. Methods: The current cross sectional study was conducted on a total of 107 patients with diabetes (HbA1c >6.5%) and 107 non-diabetic subjects (HbA1c <6.5%) referred to Rassool Akram Hospital, Tehran, Iran from 2015 to 2016, as the sample population. The two groups were compared regarding their TAC and vitamin D serum levels and the association between vitamin D concentration and TAC was evaluated. Results: Age and body mass index (BMI)were significantly higher in patients with diabetes, compared with the serum levels of vitamin D and TAC (P P=0.003). In multivariate regression model, the duration of diabetes was also significantly associated with TAC level (beta coefficient=-0.82, P <0.001). Conclusion: The low serum levels of TAC and vitamin D in patients with diabetes could be indicative of oxidative stress in the presence of high blood glucose levels. Supplementation of vitamin D in patients with diabetes might be effective to control the negative impacts of the disease and decrease cells’ exposure to oxidative environment in prediabetes.
Ali Zare Mirzaie; Maryam Abolhasani; Roozbeh Mobasher Moghaddam; Maryam Kadivar
Volume 7, Issue 3 , July 2012, , Pages 183-189
Abstract
Background and Objectives: Gastrointestinal polyps are proliferative or neoplastic mucosal lesions. The most important point about these polyps is risk of malignancy of them. This study was performed to determine type and frequency of polyps of gastrointestinal tract in Iranian population according to ...
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Background and Objectives: Gastrointestinal polyps are proliferative or neoplastic mucosal lesions. The most important point about these polyps is risk of malignancy of them. This study was performed to determine type and frequency of polyps of gastrointestinal tract in Iranian population according to their locations.
Materials and Methods: Totally, 210 patients referred to Rasul-e-Akram Hospital in years 2006-2010 and had pathology report of gastrointestinal polyps were included in the study. Frequency of gastrointestinal polyps was determined according to type, histological subtype, location, age and sex. The data was analyzed by software SPSS 16.
Results: Of participants, 129 patients were male (61.4%) and 81 (38.6%) were female. The mean age of patients was 58.4±32 yr. The mode of age interval was 70-80 yr (25.2%). The most frequent presenting symptom was lower gastrointestinal bleeding as melena or hematochesia (31%). Colon and sigmoid were site of most of gastrointestinal polyps (74.2%). The most prevalent type of gastrointestinal polyps was adenomatous polyp which was reported in 175 patients (84.3%). The most common types of colonic and gastric polyps were adenomatous and hyperplastic types respectively.
Conclusion: Our data is highly confirmatory to previous studies regarding association of polyp with advanced age and male sex, the most prevalent symptom and site of gastrointestinal polyps, and the most common types of colonic polyps. The frequency of gastric polyps in our population differs with some studies.
Behrang Kazeminejad; Ali Zare Mirzaie; Majid Gholipour Peinavandi
Volume 4, Issue 4 , September 2009, , Pages 194-196
Abstract
Primary leiomyosarcoma of the heart is extremely rare and found in about 0.2% of all cardiac tumors. Here in a 26-year-old man with progressive dyspnea, which had started since 2 months ago, is presented. Echocardiography revealed a left atrial mass, which was suggestive for a atrial myxoma.On the surgery, ...
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Primary leiomyosarcoma of the heart is extremely rare and found in about 0.2% of all cardiac tumors. Here in a 26-year-old man with progressive dyspnea, which had started since 2 months ago, is presented. Echocardiography revealed a left atrial mass, which was suggestive for a atrial myxoma.On the surgery, a tumoral tissue in the left atrium and pulmonary veins with attachment to peripheral soft tissue, was seen and incompletely resected. Histologic examination exhibited a hypercellular,necrotic and mitotically active spindle-celled tumor with fascicular arrangement. Immunohistochemistry showed a positive reaction to SMA in tumoral cells. The patient was advised to refer for postoperative chemotherapy, which was rejected. One year later, the patient was brought to hospital with tumor recurrence. Chemotherapy was initiated for the patient immediately, but the patient was expired 3 days later.
Ali Zare mirzaie; Mohammad taghi Haghi ashtiani; Behrang Kazeminejad
Volume 3, Issue 2 , March 2008, , Pages 109-111
Abstract
Fibroadenoma of the vulva is an uncommon lesion. It has been suggested that they originate from vulvar mammary like other glands. A few examples of benign and malignant vulvar tumors arising from such glands have been reported. A 32-year-old woman was referred with a subcutaneous mass at the ...
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Fibroadenoma of the vulva is an uncommon lesion. It has been suggested that they originate from vulvar mammary like other glands. A few examples of benign and malignant vulvar tumors arising from such glands have been reported. A 32-year-old woman was referred with a subcutaneous mass at the vulva. The patient treated by simple excisional surgery with adequate peripheral margin. Histological findings showed the characteristic features of fibroadenoma of vulva. Confirmatory IHC for GCDF_15 was performed which its result was positive. Up to our knowledge, only nineteen cases of vulvar fibroadenoma have been reported in English literature