Molecular Pathology
Fatemeh Hoseini Tabatabaie; Seyed Younes Hosseini; Seyed Mohammad Ali Hashemi; Akbar Safaie; Jamal Sarvari
Abstract
Background & Objective: Epstein-Barr virus nuclear antigen-1 (EBNA1) is one of the most important proteins of Epstein-Barr virus (EBV) that might be mutated in various related cancers. The purpose of this study was to compare EBNA1 mutations in the C-terminal region between patients with cervical ...
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Background & Objective: Epstein-Barr virus nuclear antigen-1 (EBNA1) is one of the most important proteins of Epstein-Barr virus (EBV) that might be mutated in various related cancers. The purpose of this study was to compare EBNA1 mutations in the C-terminal region between patients with cervical and ovarian cancer and healthy individuals.Methods: As test and control groups, 18 EBV-positive paraffin-embedded samples of cervical and ovarian cancer and 10 age- and gender-matched healthy volunteers who did not have cancer but were EBV-positive were both used. Utilizing a commercial DNA extraction kit, total DNA was extracted following deparaffinization. The entire C-terminal region of the EBNA1 sequence was amplified using an in-house nested PCR. Phylogenetic analysis and Sanger sequencing were used to analyze the sequences using MEGA 7 software and through NJ method.Results: Sequence analysis revealed that the P-Ala subtype of EBNA1 was present in all samples. In two and one samples, respectively, of cervical cancer patients, the mutations A1887G and G1891A were found. The G1595T mutation was also detected in four sequences taken from ovarian cancer patients. No statistically significant difference could be found between the frequency of mutations in patients and controls (P>0.05). No known amino acid substitutions were found in the USP7-binding region and the DBD/DD domain.Conclusion: The findings showed that P-Ala is the predominant EBV subtype across all samples. Additionally, as the sequence of EBNA1's C-terminal region is so stable, it's possible that it had little impact on the pathogenesis of ovarian and cervical malignancies. It is advised to conduct additional research to verify these findings.
Cytology
Fatemeh Samiee Rad; mehdi Ghaebi; Simin Zarabadipour; Arezoo Bajelan; fatemeh Pashazade; Mehri Kalhor; Amane Barikani
Abstract
Background & Objective: Premalignant lesions of cervix have increased dramatically in recent years. Early diagnosis and management of abnormalities have an effective role in preventing the invasion of the disease and also in timely treatment. This study aimed to compare diagnostic methods in the ...
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Background & Objective: Premalignant lesions of cervix have increased dramatically in recent years. Early diagnosis and management of abnormalities have an effective role in preventing the invasion of the disease and also in timely treatment. This study aimed to compare diagnostic methods in the detection of squamous cell abnormalities with abnormal Pap smear test. Methods: This cross-sectional study was performed on 1000 women with abnormal Pap smears in 2007-2018. Sampling was performed with simple method. All samples were subjected to an immediate assessment of colposcopy and histopathology if suspected. The checklist included demographic information as well as symptoms, cytopathology, colposcopy and histopathology findings. Data analysis was performed using descriptive and statistical analysis (P<0.05). Result: A significant relationship between histopathology and Pap smear findings was found (P=0.009), also there was a significant correlation between histopathology and colposcopy findings (P=0.001). However, there was no significant relationship between clinical symptoms and histopathology findings (p=0.8). Sensitivity , specificity , positive and negative predictive value of Pap smear were 43%, 65.9%, 75.4%, 32.2% and of colposcopy were 74.7%, 39.5%, 75%, 39.1%, and of clinical symptoms were 72.6%, 28.1%, 71.1%, 29.7%, respectively. Conclusion: Pap smear findings have the appropriate diagnostic accuracy in comparison with colposcopy and histopathology findings for screening and diagnosis of squamous intra-epithelial lesions. Also, there was higher sensitivity of colposcopy compared with Pap smear to detect cervical lesions. Therefore, it is advisable to use these methods simultaneously.
Amir Sohrabi; Massoud Hajia
Abstract
Background: The accuracy of diagnostic assays in Human Papillomavirus (HPV) genital infection and cervical cancer has remained a clinical challenge in diagnosis. Evidence indicates that a large proportion of cervical cancer can be prevented through organized care for HPV and testing. Countries ...
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Background: The accuracy of diagnostic assays in Human Papillomavirus (HPV) genital infection and cervical cancer has remained a clinical challenge in diagnosis. Evidence indicates that a large proportion of cervical cancer can be prevented through organized care for HPV and testing. Countries with low per capita income, such as Iran and its neighbours, have no national organized program for cervical cancer screening and vaccination. The aim of this study was to review recent published papers in this region for evaluating the efficacy of released data regarding HPV genotyping system in genital infections and cervical cancer Methods: Investigating various medical search engines retrieved 46 reports, mostly after 2010, consisting of either home brew protocols or commercial technologies in this field. Results: Summarized results demonstrated that except a few cases, all reports were limited studies performed in confined populations focusing on attending patients at clinics for regular checkups. In the present study, 52.8% of papers were from Iran and the rest belonged to other countries. The rate of HPV infection was reported in the range of 0.62% to 25% in the normal population, while it varied from 18.75% to 100% in females with cervical cancer. In HPV genotyping surveys, only 26.1 % (12/46) of reports had validated and World Health Organization (WHO) proficient procedures. Also, multiple infections were not mentioned in 56.52% (25/46) of researches. Conclusions: Employing reliable genotyping methods is the best way for regular screening of cervical cancer related to HPV and precancerous diseases in females of these areas. The focus of most surveys was to come up with the best national policies for establishing a preventive program in Iran and Persian Gulf area.
Narges Izadi-Mood; Soheila Sarmadi; Hossein Sadidi
Volume 9, Issue 4 , October 2014, , Pages 263-267
Abstract
Background & Objectives: Tumor diathesis (TD) is defined as granular proteinaceous precipitates on slide surface of cytologic smears. It is found in the background of smears of invasive carcinoma but not in all cases. The aim of present study was to determine the prevalence of TD in cervicovaginal ...
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Background & Objectives: Tumor diathesis (TD) is defined as granular proteinaceous precipitates on slide surface of cytologic smears. It is found in the background of smears of invasive carcinoma but not in all cases. The aim of present study was to determine the prevalence of TD in cervicovaginal smears from patients with uterine cervix carcinoma.
Methods: Cytological smears and histological slides from the Department of Pathology, Women Hospital, Tehran, Iran, of forty six patients histologically confirmed carcinoma of uterine cervix from 1995 to 2003 were reviewed for presence of TD, red blood cells, and neutrophils on cytological smears as well as depth of invasion, histologic types and grade of differentiation of tumor.
Results: TD was detected in 28 of the 46 smears (60.9%); in 18 patients with squamous cell carcinoma (62.1%), 7 adenocarcinoma (58.3%), 2 adenosquamous carcinoma (66.7%) and one endometrial carcinoma which involved uterine cervix. TD was seen in 4 (33.3%) uterine cervix carcinoma with 5mm depth of invasion and 17 (65.4%) uterine cervix carcinoma with ≥ 5mm depth of invasion. There was a positive correlation between the presence of TD and the depth of invasion. Although an important criterion of malignancy, TD, was absent in some cases of carcinoma, particularly those that had < 5mm depth of invasion.
Conclusion: Increasing in depth of invasion and decreasing in differentiation of the tumor were associated with increasing in frequency of TD in cytological smears. A definite distinction between an intraepithelial lesion and a shallow invasive cancer may not be possible on cervicovaginal smears.