Almila Senat

Objective: This study is a retrospective investigation of the relationship among vitamin D levels, neutrophil-to-lymphocyte ratio (NLR), and routine inflammatory markers. Material and Methods: A total of 3,859 individuals were included in this retrospective cross-sectional study. Participants were evaluated for age, sex, vitamin D level, C-reactive protein (CRP), erythrocyte sedimentation rate, lymphocyte, neutrophil, white blood cell (WBC), ferritin, and alanine aminotransferase (ALT) levels. Vitamin D levels were categorized as >30 ng/mL (normal), 20–30 ng/mL (insufficient), <20 ng/mL (deficient), and <10 ng/mL (severe deficiency). Differences and correlations between the groups were analyzed using SPSS v26 software. Results: The participants' average age was 46.9±16.0 years, and 73.1% of them were female. The average vitamin D level was 19.7±12.0 ng/mL. CRP and WBC levels were significantly higher in the severe deficiency group (p<0.01). Vitamin D levels showed a negative correlation with CRP (r = –0.52, p = 0.002) and WBC (r = –0.079, p = 0.000). A borderline negative correlation was observed between vitamin D and NLR (r = –0.32, p = 0.051). Ferritin, eGFR, and hemoglobin levels also showed significant differences across vitamin D categories. Inflammatory markers were higher in men, whereas vitamin D levels were significantly lower in women. Conclusion: Vitamin D deficiency is associated with elevated inflammatory markers. These findings indicate that vitamin D levels should be considered in the clinical evaluation of systemic inflammation and related health conditions.

Objective: To evaluate serum proprotein convertase subtilisin/kexin type 9 (PCSK9) levels in polycystic ovary syndrome (PCOS) patients according to body mass index (BMI) and investigate their association with lipid parameters and long-term cardiovascular risk. Methods: A total of 80 women with PCOS were divided into two groups: normal weight (BMI < 25, n = 40) and overweight/obese (BMI ≥ 25, n = 40). Serum PCSK9 levels were measured via enzyme-linked immunosorbent assay. Lipid profiles, hormone levels, and 30-year Framingham cardiovascular risk scores were analyzed. Results: Serum PCSK9 levels were significantly higher in the overweight/obese group (27.6 ng/ml) compared to the normal weight group (9.5 ng/ml) (p < 0.05). PCSK9 showed positive correlations with LDL-C, total cholesterol, AMH, and Framingham risk scores. No significant correlation with homeostatic model assessment of insulin resistance or insulin was observed. Conclusion: Elevated PCSK9 levels in overweight/obese PCOS patients may indicate an increased long-term cardiovascular risk. PCSK9 may serve as a biomarker linking metabolic and reproductive disturbances in PCOS and could be a future therapeutic target.

This prospective observational study aimed to compare abdominal hysterectomy (AH), vaginal hysterectomy (VH), and total laparoscopic hysterectomy (TLH) in terms of oxidative stress (OS) by measuring serum levels of total antioxidant status (TAS), total oxidant status (TOS), and oxidative stress index (OSI). Of the 3 groups, namely, AH, VH, and TLH, 22 patients were enrolled in each to investigate the aim of the study mentioned above. Patient demographics, clinical and surgical characteristics, and preoperative and postoperative (0th and 24th hours) serum TAS, TOS, and OSI levels were investigated. The groups differed significantly based on surgical indications (P < .001). While abnormal uterine bleeding was more prevalent in the AH (95.5%) and TLH (77.3%) groups, pelvic organ prolapse (POP) was more prevalent in the VH group (90.1%). The mean age and menopausal patient rates were significantly higher in the VH group than in the AH and TLH groups (P < .001). The groups did not differ significantly in terms of simultaneous bilateral salpingo-oophorectomy rates (P = .10). However, additional POP surgery was performed in 14 patients in the VH group. The mean operative time was significantly shorter in the AH group than in the VH and TLH groups (P = .001). The groups did not differ significantly based on either the preoperative or postoperative serum TAS levels (P > .05). Furthermore, the change in serum TAS levels over time was not significant in any of the groups (P > .05). In contrast, preoperative serum TOS and OSI levels were significantly higher in the VH group than in the AH and TLH groups (P < .05). The groups did not differ significantly in terms of serum TOS and OSI levels at 0th and 24th hours postoperatively (P > .05). Serum TOS and OSI levels increased dramatically over time in the AH and TLH groups (P < .05), but not in the VH group (P > .05). post hoc analysis showed that the changes in serum TOS and OSI values in the AH and TLH groups were between the preoperative and postoperative 0th hour levels (P < .001). Our results indicated that the total antioxidant capacity was preserved in all 3 techniques. However, VH causes less OS than the other hysterectomy techniques.

Objectives: Thiol-disulfide measurements will assess obesity-related oxidative stress. Methods: A prospective observational study was done at two tertiary care centers. The participants were divided into three distinct categories based on their body mass index (BMI): The control group (Group 1) consisted of 116 individuals with a BMI ranging from 18 to 25 kg/m², while the overweight group (Group 2, n = 89) included those with a BMI between 25 and 30 kg/m². The obese group (Group 3, n = 39) comprised individuals with a BMI of 30 kg/m² or greater. This approach primarily utilizes the disulfide/native thiol ratio, disulfide/total thiol ratio, and native thiol/total thiol ratio as key metrics. All patients' demographics, waist circumference, hip circumference, height, weight, hemoglobin, hematocrit, white blood cell count, glucose, C-reactive protein, disulfide, native-thiol (NT), total-thiol (TT), lipid hydroperoxide radical (LOOH), and absolute ischemia-modified-albumin (ABSO) levels were recorded on calculations and records were made for disulfide to native and total thiol ratios. Results: Thiol-disulfide equilibrium differed between the three groups. NT concentrations averaged 368.87 mmol/L across all individuals and were significantly higher in the normal-weight cohort (BMI 18-25 kg/m2) at 380.60 mmol/L, compared to overweight and obese populations (p<0.001). TT concentrations were higher in normal-weight individuals, with an average of 426.36±54.48 mmol/L, compared to 405.41±52.14 and 391.07±46.45 in overweight and obese individuals, respectively (p<0.001). Conclusions: Reduced native and total thiol levels, along with altered disulfide concentrations in obese individuals, serve as indicators of oxidative stress.

Objective: This study aimed to investigate the relationship between oxidative stress (OS) and endometrial polyps (EP) in pre- versus postmenopausal women with abnormal uterine bleeding. Methods: This prospective case control study was conducted in the Gynecology Department of Ankara Bilkent City Hospital between January and December 2019. In this study, the EP and control groups included 45 participants each (30 pre- and 15 postmenopausal women). Demographics (age, gravidity, parity, and body mass index), serum complete blood count parameters, serum total antioxidant status, total oxidant status (TOS), oxidative stress index (OSI), and thiol/disulfide balance were compared between groups. Subsequently, all women were stratified based on menopausal status, and the investigated parameters were investigated separately in the pre- and postmenopausal participants between groups. Results: There were no significant intergroup differences in the investigated parameters among all participants (P>0.05). However, unlike in the control group, the age distribution in the EP group was bimodal, peaking in the early 40s and late 50s. Stratification based on menopausal status revealed no significant intergroup differences in the investigated parameters among the premenopausal participants. However, among the postmenopausal participants, serum TOS and OSI levels were significantly higher in the EP versus control group (9.0 vs. 7.2 μmol H2O2 Equiv/L and 0.8 vs. 0.6 AU; P=0.01). Conclusions: Serum OS may play a role in the development of EP, particularly among postmenopausal women. Further investigations are required in this area. doi: https://doi.org/10.12669/pjms.41.1.10170 How to cite this: Tas EE, Ozgen E, Yilmaz G, Senat A. Relationship between oxidative stress and endometrial polyps in pre-and postmenopausal women. Pak J Med Sci. 2025;41(1):130-135. doi: https://doi.org/10.12669/pjms.41.1.10170 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Objective Thyroid hormones are known to affect the biosynthesis and degradation of antioxidant compounds, suggesting a possible link between hypothyroidism and oxidative stress. However, there is no clear consensus in the literature regarding this association. The aim of this study was to evaluate oxidative stress markers (extracellular thiol-disulfide homeostasis and intracellular glutathione homeostasis) in patients with hypothyroidism due to autoimmune (Hashimoto’s thyroiditis) or nonautoimmune thyroid disease rendered euthyroid after levothyroxine replacement. Subjects and methods The study included 116 patients [...] ABSTRACT Objective Thyroid hormones are known to affect the biosynthesis and degradation of antioxidant compounds, suggesting a possible link between hypothyroidism and oxidative stress. However, there is no clear consensus in the literature regarding this association. The aim of this study was to evaluate oxidative stress markers (extracellular thiol-disulfide homeostasis and intracellular glutathione homeostasis) in patients with hypothyroidism due to autoimmune (Hashimoto’s thyroiditis) or nonautoimmune thyroid disease rendered euthyroid after levothyroxine replacement. Subjects and methods The study included 116 patients

Objectives: In this study, we aimed to evaluate the relationship between ABO blood groups and Rhesus factor (Rf) and severe acute respiratory syndrome coronavirus-2 (Sars-CoV-2), as well as the risk of infection susceptibility and death according to pre-existing comorbidities. Methods: This retrospective study included patients medical record between March 2020 and March 2021. A total 470 patients were included in the study. The subjects were categorized according to diagnose of Sars-CoV-2. Also, we evaluated the subject according to severity of Sars-CoV-2 infection. The logistic and multivariate regression analysis were performed to predict possible effect of ABO and Rf types as well as comorbidities on indicators of Sars-CoV-2 severity including Intensive care unit (ICU) hospitalization, intubation, and mortality. Results: The distribution of ABO blood type and Rf were not statistically different cases with and without Sars-CoV-2. Blood type B and A were the most groups in intubation and mortality among patients with Sars-CoV-2. However, ABO blood types had no significant effect on risk of Sars-CoV-2 and mortality while, Rf had a significantly effect on it. Additionally, Rf had a statistically significant effect on all severity indicators of Sars-CoV-2 but ABO had not. Conclusions: While Rf was significantly associated with risk of Sars-CoV-2 and had a strong effect on ICU admission, intubation, and mortality, ABO groups were not associated with risk of disease. Intubation and mortality rates were higher in patients with blood group B (OR: 2.93 p:0.390 95 % CI [0.253–33.9], OR: 0.217 p:0.211 95 % CI [0.020–2.37]) and Rh factor + (OR: 1.63 p:0.027 95 % CI [0.046–0.828]).

Summary: Background: High density lipoprotein (HDL) is well established to have an athero-protective role under normal conditions; however, pro-inflammatory alteration of HDL proteins may transform the HDL particle into a dysfunctional molecule. Our aim was to investigate HDL dysfunction by measuring enzyme-based markers in carotid artery stenosis (CAS). Patients and methods: All participants underwent duplex ultrasound and 52 subjects diagnosed with CAS and 51 subjects who had no significant stenosis (as controls) were enrolled in this study. Serum lipid profiles and serum parameters associated with dysfunctional HDL including myeloperoxidase (MPO), paraoxonase 1 (PON1), arylesterase (ARE) activity, and lipid hydroperoxide (LOOH) levels were measured. Results: It was found that the patients with CAS had increased levels of MPO and LOOH while PON1 activity was decreased. There was no significant difference between the CAS and non-CAS groups in terms of HDL levels. MPO/PON1, MPO/ARE, and LOOH/PON1 ratios were significantly increased in the CAS group. MPO/PON1 and MPO/ARE ratios both demonstrated significant correlations with degree of stenosis (%). Conclusions: The MPO/PON1 and MPO/ARE ratios may be potential serum markers that can enable the monitoring of HDL functionality and the assessment of atherosclerotic disease risks. Additionally, monitoring the oxidative balance of lipids on HDL molecules by LOOH/PON1 ratio may have value in the early detection of pro-atherosclerotic transformation of the HDL particle.

Almila Senat, Esra Kabadayi-Sahin, Ibrahim Sogut, Tomris Duymaz, Ozcan Erel. Clin Psychopharmacol Neurosci 2023;21:526-33. https://doi.org/10.9758/cpn.22.1010