Publications by authors named "Ayhan Atigan"

3 Publications

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The relation of CD3, CD4, CD8 and PD-1 expression with tumor type and prognosis in epithelial ovarian cancers.

Ginekol Pol 2021 Apr 29. Epub 2021 Apr 29.

Departmant of Pathology, Pamukkale University, Medical School, Pamukkale University, Denizli, Turkey.

Objectives: Ovarian cancer is a heterogeneous disease, where chronic inflammation plays a key role in carcinogenesis. In this study, it is aimed to analyze the relationship with prognosis and chemotherapy response to clinicopathological variables in epithelial ovarian cancers such as proliferation of PD-1 +, CD8 +, CD4 +, CD3 + T-lymphocytes infiltrating the tumor and tumor stroma.

Matrial And Methods: Seventy-six cases diagnosed with primary epithelial ovarian tumor from biopsy or surgical resection materials were included in the study. Immunreactivity of CD3, CD4, CD8, PD1 was evaluated immunohistochemically in lymphocytes in tumor infiltrating lymphocytes and stromal lymphocytes.

Results: Seventeen (22.4%) of the cases were Type I, 59 (77.6%) of them were Type II ovarian carcinoma. PD-1 positivity was observed in stromal and intraepithelial lymphocytes in 22 (28.9%) of 76 cases. In the presence of PD-1 + T-lymphocytes that infiltrate tumor and stroma, disease-free survival are shorter (p = 0.037). The presence of stromal CD4 + and CD8 + T-lymphocytes was more common in late stage patients (p = 0.012, p = 0.036; respectively). The disease-free and overall survival rate was statistically significantly shorter in the presence of CD8 + T lymphocytes (p = 0.009, p = 0.003; respectively).

Conclusions: CD3, CD4 and CD8 may contribute to PD-1 mediated tumor control. Anti PD-1 therapy may be an alternative to chemotherapy in PD-1 positive patients. Identifying patients who do not respond to chemotherapy through PD-1 expression prior to immunotherapy will help develop potential personalized immunotherapy.
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http://dx.doi.org/10.5603/GP.a2021.0080DOI Listing
April 2021

Severe Preeclampsia is Associated with Functional and Structural Cardiac Alterations: A Case-control Study.

Z Geburtshilfe Neonatol 2021 Apr 9. Epub 2021 Apr 9.

Department of Cardiology, Pamukkale University, Denizli, Turkey.

Background: The aim of the current study is to compare electrocardiographic and echocardiographic changes in patients with severe preeclampsia (PE) and those with uncomplicated pregnancies.

Methods: This is a case-controlled prospective study consisting of 21 pregnant women with severe preeclampsia and a control group consisting of age- and gestational age-matched 24 healthy pregnant women. All patients underwent electrocardiographic and echocardiographic investigation.

Results: QRS intervals were shorter and PR intervals were longer in the PE group (QRS duration: 80 (60-120) ms and 80 (40-110) ms, p=0.035; PR duration: 160 (100-240) ms and 120 (80-200) ms, respectively; p=0.046). The left ventricular end-systolic diameters of the patients with severe PE group were significantly larger than the control group (31 (24-36) mm and 30 (24-33) mm, respectively; p=0.05). Similarly, posterior wall thickness values of the PE group were significantly higher compared to the control group (9 (7-11) mm vs. 8 (6-10) mm, respectively; p=0.020). Left ventricular mass (146.63±27.73 g and 128.69±23.25 g, respectively; p=0.033) and relative wall thickness values (0.385±0.054 and 0.349±0.046, respectively; p=0.030) were also higher in the PE group. In addition, patients with early-onset severe PE had significantly a higher left ventricular end-diastolic diameter and volume compared with late-onset PE patients.

Conclusions: The structural changes detected in the severe PE group suggest a chronic process rather than an acute effect. In addition, diastolic dysfunction and left ventricular remodeling are most marked in patients with severe early-onset PE.
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http://dx.doi.org/10.1055/a-1403-3585DOI Listing
April 2021

Predictors of Human papillomavirus (HPV) persistence after treatment of high grade cervical lesions; does cervical cytology have any prognostic value in primary HPV screening?

Ann Diagn Pathol 2020 Dec 8;49:151626. Epub 2020 Sep 8.

Department of Obstetrics and Gynecology, Pamukkale University Medical School, Denizli, Turkey.

Objective: This study aimed to determine the factors associated with Human Papillomavirus (HPV) persistence in women undergoing cervical excision for pre-invasive lesions, after they have been referred from a primary HPV screening program.

Methods: A retrospective study design involving patients who were treated at a Cervical Disease Screening and Treatment Unit, in a university hospital setting. After initial treatment, cervical HPV infection status was analyzed at the sixth month, first year and then subsequently after the second year.

Results: Totally, 395 patients who were diagnosed with pre-invasive cervical lesions and who subsequently undergone cervical excision were identified. In the first-year visit after cervical excision, HPV 18 was cleared in almost all (95.8%) cases, followed by HPV 16 (69.9%) and other hrHPV types (65.6%). Available data documented that 88.6% of women reached clearance after the two-year follow-up. Univariate analysis revealed a significantly higher proportion of HPV clearance among women who were younger (p = 0.019), premenopausal (p = 0.002), and who had been found to have a negative cytology result on their initial Pap test (p = 0.018). However, only cervical cytology result remained as the independent predictor of HPV persistence on a multivariate logistic regression (OR 0.43; 95% CI 0.21-0.87; p = 0.019).

Conclusions: A low risk of HPV persistence was found among every HPV genotype in women undergoing cervical excision for pre-invasive cervical lesions. Initial cervical cytology result was the only independent predictor of HPV clearance during surveillance, which indicates the prognostic value of Pap test in primary HPV screening.
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http://dx.doi.org/10.1016/j.anndiagpath.2020.151626DOI Listing
December 2020