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A Different Look at Premarital Hemoglobinopathy Screening in Primary Care
(2021) Güzel, Eda Çelik; Çelikkol, Aliye; Mekik, Haluk
Objective: Despite the high prevalence of hemoglobinopathies (HBP), the most common single-gene disorders in Turkey, data in some regions are lacking. We aimed to evaluate the effectiveness of the hemoglobinopathy premarital screening program (PMS) and to investigate the contribution of efficient use of complete blood count (CBC) parameters on cost-effectivity. Methods: HMP diagnosed 49171 subjects in 4 years and CBC of subjects with HMP in a year were evaluated retrospectively. Results: The total incidence rate of HBP was 3.41%, ?-thalassemia trait (?-TT) was 1.98%, HMP incidence in the PMS group was 2.43%, ?-TT was 1.08%. Moreover, HbF, HbD, HbC, HbS, HbE and HbJ were detected with the incidences of 0.49%, 0.14%, 0.05%, 0.04%, 0.007% and 0.009%, respectively. RDW/MCH ratio compared to other indices was the most successful for both sexes in diagnostic efficiency of HBP (AUC: male:0.922 - female:0.961) and ?-TT (AUC: male;0.928 - female:0.961). Conclusions: PMS was found to be an effective application program in HMP screening. RDW/MCH ratio was the most useful and easy parameter in detecting HBP and ?-TT in PMS and in terms of reducing unnecessary test requests and cost-effectiveness in public health screenings.
A Novel Combined Index of D-Dimer, Fibrinogen, Albumin, and Platelet (FDAPR) as Mortality Predictor of COVID-19
(Wolters Kluwer Medknow Publications, 2022) Çelikkol, Aliye; Doğan, Mustafa; Güzel, Eda Çelik; Erdal, Berna; Yılmaz, A.
Background: In coronavirus disease 2019 (COVID-19) caused by SARSCoV2 viruses, coagulation abnormalities are strongly correlated between disease severity and mortality risk. Aims: The aim was to search for new indices to determine mortality risk. Fibrinogen times D-dimer to albumin times platelet ratio calculated with the formula (FDAPR index: ((Fibrinogen x D-dimer)/(Albumin x Platelet)) investigated as a mortality marker in COVID-19 patients. The hospitalization data of 1124 patients were analyzed from the electronic archive system. Hemogram, coagulation, and inflammatory markers were investigated in the study group. Materials and Methods: All statistical analyses like the student t-test, Mann-Whitney U, Kaplan-Meier, and Cox hazard ratio, were performed with the SPSS 22.0 program. Results: Prothrombin time was prolonged significantly in patients (P < 0.05) compared to healthy subjects (n = 30). D-dimer and fibrinogen were high, and albumin and platelet counts were low in COVID-19 patients (all, P < 0.001). When the data of 224 non-survivors and 900 survived patients were compared, D-dimer and fibrinogen were higher, and albumin and platelet lower (all, P < 0.001) compared to mild and severe patients. At the cut-off value of 0.49, the FDAPR index was performed with 89.1% sensitivity and 88.6% specificity. FDAPR index had the highest mortality predictive power (P < 0.01; HR = 5.366; 95% CI; 1.729-16.654). Conclusions: This study revealed that the FDAPR index could be used as a mortality marker of COVID-19 disease.
A novel combined index of D-dimer, fibrinogen, albumin, and platelet (FDAPR) as mortality predictor of COVID-19
(Wolters Kluwer Medknow Publications, 2022) Çelikkol, Aliye; Doğan, Mustafa; Güzel, Eda Çelik; Erdal, Berna; Yılmaz, A.
Background: In coronavirus disease 2019 (COVID-19) caused by SARSCoV2 viruses, coagulation abnormalities are strongly correlated between disease severity and mortality risk. Aims: The aim was to search for new indices to determine mortality risk. Fibrinogen times D-dimer to albumin times platelet ratio calculated with the formula (FDAPR index: ((Fibrinogen × D-dimer)/(Albumin × Platelet)) investigated as a mortality marker in COVID-19 patients. The hospitalization data of 1124 patients were analyzed from the electronic archive system. Hemogram, coagulation, and inflammatory markers were investigated in the study group. Materials and Methods: All statistical analyses like the student t-test, Mann-Whitney U, Kaplan-Meier, and Cox hazard ratio, were performed with the SPSS 22.0 program. Results: Prothrombin time was prolonged significantly in patients (P < 0.05) compared to healthy subjects (n = 30). D-dimer and fibrinogen were high, and albumin and platelet counts were low in COVID-19 patients (all, P < 0.001). When the data of 224 non-survivors and 900 survived patients were compared, D-dimer and fibrinogen were higher, and albumin and platelet lower (all, P < 0.001) compared to mild and severe patients. At the cut-off value of 0.49, the FDAPR index was performed with 89.1% sensitivity and 88.6% specificity. FDAPR index had the highest mortality predictive power (P < 0.01; HR = 5.366; 95% CI; 1.729-16.654). Conclusions: This study revealed that the FDAPR index could be used as a mortality marker of COVID-19 disease. © 2022 Wolters Kluwer Medknow Publications. All rights reserved.
Assessment of intracellular zinc levels in infants with food protein-induced allergic proctocolitis
(Codon Publications, 2023) Günaydın, Nurşen Ciğerci; Çelikkol, Aliye; Nalbantoğlu, Ayşin
Background: Food protein-induced allergic proctocolitis (FPIAP) is characterized by bloody stools in well-appearing infants. Zinc is a micronutrient that plays a crucial role in immune modulation and is essential for cellular function during immune response. Although there are studies on the assessment of intracellular zinc levels in allergic diseases, no data is available on erythrocyte zinc levels of patients with FPIAP. Objective: This study aimed to assess the erythrocyte zinc levels of children with allergic proctocolitis and compare zinc levels with clinical and demographic characteristics. Methods: This was a case-control study that prospectively compared 50 patients with FPIAP and 50 healthy children without malnutrition. The erythrocyte zinc levels of children were determined using atomic absorption spectrophotometry. Results: Fifty patients with FPIAP, including 28 (51%) girls, with median age of 7.1 +/- 2.9 (3-14) months and 50 healthy children, including 26 (53.1%) girls, with median age of 7.7 +/- 2.8 (3-13) months were included in the study. Seventy percent (n = 35) of the patients with FPIAP started to have symptoms while they were exclusively breastfeeding. Offending allergen foods were cow's milk (78%), egg (40%), sesame (10%), hazelnut (8%), almond (6%), beef (6%), and peanuts (6%, n = 3). Intracellular (erythrocyte) zinc levels in patients with FPIAP were lower than in the healthy control group (495.5 +/- 134 mu g/dL, 567.3 +/- 154.4 mu g/dL, respectively, P = 0.01). Patients with FPIAP aged younger than 6 months had lower intracellular zinc levels compared with those aged above 6 months (457 +/- 137 mu g/dL; 548 +/- 112 mu g/dL, respectively, P = 0.01). There was no relationship between zinc levels and time of symptom onset, presence of concomitant disease, being allergic to multiple foods, and family history of atopy (P > 0.05). Conclusions: FPIAP is a food allergy with limited information on its pathogenesis. Considering the beneficial effects on gastrointestinal system epithelia, zinc may be involved in the patho-genesis of FPIAP. Future comprehensive prospective research on this subject is of importance. (c) 2023 Codon Publications. Published by Codon Publications.
Bisphenol A as a risk factor for allergic rhinitis in children
(Sage Publications Ltd, 2021) Nalbantoğlu, Ayşin; Çelikkol, Aliye; Samancı, Nedim; Günaydın, Nurşen Ciğerci; Nalbanto?lu, Burçin
Aim: Bisphenol-A (BPA) is an endocrine disrupting compound and may exacerbate or induce allergic diseases. To the best of our knowledge, there is little evidence regarding the effects of BPA exposure on allergic rhinitis (AR) in children. In the present study, we sought to examine whether exposure to BPA in children is associated with AR. Methods: This study was designed as a case controlled clinical study. 140 children diagnosed as allergic rhinitis and 140 healthy children as control group were recruited. BPA, interleukin-4, interleukin-13, total IgE and interferon-gamma levels were determined. Skin prick tests were performed in patient group. Total nasal symptom score and ARIA classification were used to predict disease severity. Results: Serum IL-4, IgE and BPA levels of children with allergic rhinitis were found to be significantly higher than the control group. BPA and IL-4 levels were significantly higher in moderate to severe-persistent group. There was a positive correlation between total nasal symptom scores and Bisphenol A levels in children with allergic rhinitis. Conclusions: The present study is the first to observe statistically significant relationship between BPA concentrations and allergic rhinitis in children. Also increased levels of BPA are associated with disease severity.
BRONŞİOLİTLİ ÇOCUKLARDA HASTALIK AKTİVİTESİNİN DEĞERLENDİRİLMESİNDE NÖTROFİL/LENFOSİT ORANI YENİ BİR BİYOBELİRTEÇ OLABİLİR Mİ?
(Tekirdağ Namık Kemal Üniversitesi, 2019) Çelik Güzel, Eda; Fidan, Çiğdem; Güzel, Savaş; Paketçi, Cem; Çelikkol, Aliye
Amaç: Akut bronşiolit, inflamatuar bir hastalıktır. Nötrofil/lenfosit oranı (NLO) çeşitli inflamatuar hastalıklarda arttığı bilinen inflamatuar belirteçlerdir. Bu çalışmada amacımız bronşiolitli çocuk hastalarda NLO değerlerini incelemek ve hastalık şiddetiyle ilişkisini değerlendirmektir. Materyal ve Metot: Çalışma akut bronşiolit tanısı alan 3 ay ile 5 yaş arasında 77 hasta ve 34 sağlıklı çocuktan oluşturuldu. Hasta ve kontrol grubunda C-reaktif protein (CRP), beyaz küre sayısı (BKS), ortalama trombosit hacmi (OTH), nötrofil ve lenfosit değerleri ile birlikte NLO değerleri incelendi. Bulgular: Akut bronşiolit grubunda CRP, BKS, NLO ve nötrofil sayısı kontrol grubuna göre anlamlı olarak yüksek saptandı (sırasıyla p<0.01, p<0.001, p<0.001, p<0.001). OTH düzeyleri hasta grubunda anlamlı olarak düşük bulundu (p<0.05). Hastalık şiddetine göre hasta grubu hafif, orta ve ağır olmak üzere üç gruba ayrıldı. Orta bronşiolitli hastalarda (n=21); nötrofil ve NLO değerleri hafif bronşiolitli gruba (n=25) göre anlamlı olarak yüksek saptandı (Her ikisi de p<0.05). Korelasyon analizinde; NLO ile OTH, BKS, CRP arasında pozitif korelasyon saptandı (sırasıyla r=0.262–p<0.05; r=0.454–p<0.001; r=0.706–p<0.001). Akut bronşiolitli hastaların hastaneye kabulde incelenen parametrelerden yalnızca CRP için Receiver-operating characteristic (ROC) analizinde eğri altında kalan alan (EAA) sonuçları tanısal olarak yeterli bulunurken (0.812), BKS ve NLO için yeterlilik saptanamadı (sırasıyla 0.692, 0.583). Sonuç: Çalışmamızda, hastaneye başvuruda saptanan artmış CRP düzeylerinin; bronşiolit gelişecek hastaları predikte etmede ve artmış NLO oranının hastalık şiddetinin belirlenmesinde iyi bir belirteç olabileceğini göstermektedir.
Cardiovascular disease risk prediction in scleroderma
(Assoc Medica Brasileira, 2023) Çelikkol, Aliye; Mercan, Rıdvan; Güzel, Savaş; Yılmaz, Ahsen
OBJECTIVE: Cardiovascular disease risk prediction in scleroderma is important. In this study of scleroderma patients, the aim was to investigate the relationship between cardiac myosin-binding protein-C, sensitive troponin T, and trimethylamine N-oxide and cardiovascular disease risk with the Systematic COronary Risk Evaluation 2 model of the European Society of Cardiology.METHODS: Systematic COronary Risk Evaluation 2 risk groups of 38 healthy controls and 52 women with scleroderma were evaluated. Cardiac myosin-binding protein-C, sensitive troponin T, and trimethylamine N-oxide levels were analyzed with commercial ELISA kits.RESULTS: In scleroderma patients, cardiac myosin-binding protein-C and trimethylamine N-oxide levels were higher than healthy controls but sensitive troponin T was not (p<0.001, p<0.001, and p=0.274, respectively). Out of 52 patients, 36 (69.2%) were at low risk, and the other 16 (30.8%) patients were at high-moderate risk with the Systematic COronary Risk Evaluation 2 model. At the optimal cutoff values, trimethylamine N-oxide could discriminate high-moderate risk with sensitivity 76%, specificity 86% and cardiac myosin-binding protein-C with sensitivity 75%, specificity 83%. Patients with high trimethylamine N-oxide levels (>= 10.28 ng/mL) could predict high -moderate-Systematic COronary Risk Evaluation 2 risk 15 times higher than those with low trimethylamine N-oxide (<10.28 ng/mL) levels (odds ratio [OR]: 15.00, 95%CI 3.585-62.765, p<0.001). Similarly, high cardiac myosin-binding protein-C (>= 8.29 ng/mL) levels could predict significantly higher Systematic COronary Risk Evaluation 2 risk than low cardiac myosin-binding protein-C (<8.29 ng/mL) levels (OR: 11.00, 95%CI 2.786-43.430).CONCLUSION: Noninvasive cardiovascular disease risk prediction indicators in scleroderma, cardiac myosin-binding protein-C, and trimethylamine N-oxide could be recommended to distinguish between high-moderate risk and low risk with the Systematic COronary Risk Evaluation 2 model.
Diagnostic accuracy of adropin as a preliminary test to exclude acute pulmonary embolism: a prospective study
(Bmc, 2022) Orun, Serhat; Çelikkol, Aliye; Başol, Batuhan İlbey; Yeniay, Elif
Background This study aims to investigate the diagnostic accuracy of adropin as a biomarker to exclude the diagnosis of acute pulmonary embolism (PE). Methods Patients admitted to the emergency department of a tertiary health centre between August 2019 and August 2020 and diagnosed with PE were included in this prospective cohort study. The amount of serum adropin was determined in patients with (PE) and compared with that of healthy volunteers. Receiver operating characteristic analysis was performed with the obtained data, and the area under the curve (AUC) with a 95% confidence interval was determined. The parameters of diagnostic accuracy for PE were determined. Results A total of 57 participants were included in the study (28 controls and 29 PE patients). The mean adropin level in the PE group was 187.33 +/- 62.40 pg/ml, which was significantly lower than that in the control group (524.06 +/- 421.68 pg/ml) (p < 0.001). When the optimal adropin cut-off value was 213.78 pg/ml, the likelihood ratio of the adropin test was 3.4, and the sensitivity of the adropin test at this value was 82% with specificity of 75% (95% CI; AUC: 0.821). Conclusion Our results suggest that adropin may be considered for further study as a candidate marker for the exclusion of the diagnosis of PE. However, more research is required to verify and support the generalizability of our study results.
Effects of acute topiramate administration on post-traumatic stress disorder in rats
(Cukurova Univ, Fac Medicine, 2022) Demirkapu, Mahluga Jafarova; Doğan, Furkan Cuma; Karabağ, Sevil; Yılmaz, Ahsen; Çelikkol, Aliye; Yananlı, Hasan Raci
Purpose: The aim of this study was to investigate the effects of acute systemic topiramate administration on anxiety index and freezing time, plasma estrogen and progesterone levels, and salivary gland immunoglobulin A in a post-traumatic stress disorder rat model. Materials and Methods: A total of eighteen female Wistar rats used in the study were exposed to predatory odor stress. One week later, saline was administered to the control group and 15 mu M and 30 mu M topiramate to the treatment groups, after which the animals were exposed to the trauma reminder and their behavior was monitored in the elevated plus maze. At the end of the experiment, blood samples were taken, animals were sacrificed, salivary glands were removed immediately after. Results: Topiramate suppressed anxiety index and freezing time in rats with post-traumatic stress disorder at both 15 mu M and 30 mu M doses compared to the control group. A positive correlation was observed between plasma estrogen level and anxiety index in the control group, and topiramate suppressed this correlation in a dose-dependent manner. Topiramate did not change the plasma progesterone level, but suppressed the salivary gland immunoglobulin A level at the low dose. Conclusion: These findings obtained in our study indicate that topiramate may be effective in the treatment of post-traumatic stress disorder.
Evaluation of Two Consecutive High Sensitivity Cardiac Troponin T Measurements in Healthy Newborns and Newborns with Respiratory Failure
(2021) Tüfekci, Sinan; Kızılca, Özgür; Çelikkol, Aliye; Topçu, Birol
Objective: Data on the umbilical cord and postnatal physiological limits of the high sensitivity cardiac troponin T (hs cTnT) in newborns are scarce. This study aims to determine the normal values and upper limits of hs cTnT in healthy newborns. In addition, its clinical significance and usability in neonatal respiratory failure were analyzed. Method: In this non-invasive and retrospective, cross-sectional study, 113 healthy newborns and 93 newborns with non-cardiac respiratory failure, born between July 2018 and January 2020, were evaluated. Hs cTnT was measured in the umbilical cord and 24-96 h after birth in infants. Results: In the healthy group, the median umbilical cord hs cTnT was 38 (17-156) ng/L and 99th percentile hs cTnT was 122 ng/L, and in the respiratory failure group, the median umbilical cord hs cTnT was 72 (27- 326) ng/L. Postnatal day 2-4 median hs cTnT was 75 (10-194) ng/L and 99th percentile value was 194 ng/L in the healthy group, and the median hs cTnT was 145 (41-409) ng/L in the respiratory failure group. The calculated area under the ROC curve for umbilical cord hs cTnT was 0.848 [cut-off: 64, 95% confidence interval (CI): 0.79-0.90, sensitivity: 62.4%, specificity: 93.7%], suggesting that umbilical cord hs cTnT is a sensitive marker for the prediction of neonatal respiratory failure. The calculated area under the ROC curve for control hs cTnT was 0.851 (cut-off: 121.5, 95% CI: 0.79- 0.90, sensitivity: 71%, specificity: 86.8%), suggesting that control hs cTnT is a sensitive marker for the prediction of neonatal respiratory failure. Conclusion: The results show that the reference range of umbilical cord and postnatal hs cTnT in healthy newborns is higher than that in adults. Both hs cTnT values were higher in the neonatal respiratory failure group than those in the healthy group.
Evaluation of vaspin and irisin hormones levels in diabetic rats and relationship with diet
(Ios Press, 2022) Tuğgüm, Sergen; Bozkır, Çiğdem; Aslan, Serkan; Yılmaz, Ahsen; Çelikkol, Aliye
BACKGROUND: Type-2 diabetes with an increasing prevalence is a public health problem. Irisin and vaspin, which are secreted a majority from adipose tissue, are discovered hormones recently, and their effects on diabetes are studied. OBJECTIVE: This study aims to the effects of diet on these hormones levels in diabetic rats. METHODS: In this study, ten-week-old 18 Wistar-Albino rats were divided into three groups randomly. The diabetic group (n = 6) was fed a high-fat diet (HFD). Other rats were divided into two control groups, one of them (n = 6) was fed a control diet (CD), and the other group (n = 6) was fed HFD. The feeding time for all groups was 4 weeks. Streptozotocin (STZ) was used for diabetes induction in rats. RESULTS: At the end of the four weeks, the body weight of the diabetic group decreased significantly. In the diabetic group compared to the control groups, it was observed that besides high fasting blood glucose (FBG), triglyceride, total cholesterol levels, and insulin resistance (HOMA-IR) scores. Vaspin levels were significantly higher in diabetic rats, while irisin levels were similar between groups. Besides, vaspin level correlation with biochemical parameters such as glucose, triglycerides, total cholesterol, and HOMA-IR score was significant. CONCLUSION: In conclusion, this study showed that besides the evidence that vaspine is a hormone associated with diabetes, diet composition could give an opinion about the type-2 diabetes process by looking at hormone levels.
Hypofibrinolysis Is Associated with the Severity of COVID-19 Infection: the Role of Obesity
(Carbone Editore, 2021) Oran, Mustafa; Akpınar, Seval; Doğan, Mustafa; Avcı, Burcu Altındağ; Çelikkol, Aliye; Turgut, Burhan
Introduction: Obesity, by causing hypofibrinolysis and thrombotic complications, ought to be a risk factor in terms of disease severity and mortality in COVID-19 infection. We aim to investigate the effects of obesity on fibrinolytic system in coronavirus patients while studying the changes of major fibrinolytic inhibitors plasminogen activator inhibitor (PAI-1) and thrombin activatable fibrinolysis inhibitor (TAFI). Material and methods: Sixty-six patients and 21 healthy donors were investigated and observed until either their recovery or death. Body mass index (BMI) was calculated for each person and peripheral blood used for PAI-1 and TAFI measurements. PAI-1 antigen and TAFI activated/inactivated (TAFIa/i) were measured using ELISA kits. Results: PAI-1 antigen and TAFIa/i plasma levels are higher in patients than in control group (P<00001 for both). Patients needing ICU had higher TAFIa/i values than non-ICU patients. The 15 patients who died had higher TAFIa/i levels than those staying alive. Obese patients (BMI >= 30) had higher PAI-1 levels than non-obese patients. TAFIa/i is associated with D-dimer, C-reactive protein (CRP), ferritin, creatinine and neutrophile count, whereas PAI-1 is associated only with the serum creatinine level. Conclusion: Our study shows that the levels of the major fibrinolytic inhibitors PAI 1 and TAFI increase in patients with COVID-19 infection, and proves for the first time that PAI 1 levels increase more in obese patients than in non-obese ones. It is also revealed that the plasma TAFI level is associated with the severity of COVID-19 infection, which suggests that the inhibitory treatments against TAFI should be effective in preventing thrombotic complications in the course of COVID-19 infection.
Immunogenicity after CoronaVac vaccination
(Associacao Medica Brasileira, 2021) Güzel, Eda Çelik; Çelikkol, Aliye; Erdal, Berna; Sedef, N.
OBJECTIVE: This study aimed to investigate the seropositivity of CoronaVac-SinoVac vaccination in severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) risk factors and comorbidities. METHODS: Immunoglobulin (IgG) antibody responses were examined on the 21st day after the second dose of CoronaVac-SinoVac 6 ?g vaccine on the 28th day. SARS-CoV-2 IgG antibody levels were measured by using the enzyme-linked immunosorbent assay method in vaccinated health care workers (n=134) (Group I), vaccinated polymerase chain reaction (PCR) (+) who had coronavirus-19 (COVID-19) disease (n=21) (Group II), and unvaccinated PCR (+) (n=28) (Group III) participants. Subgroups were formed in Group I according to the presence of COVID-19 risk factors and comorbidities (diabetes mellitus, cardiovascular disease, and asthma/allergy) and demographic data. RESULTS: Seropositivity rates were 95.5, 100, and 89.3% for Groups I, II, and III, respectively. IgG antibody levels were found significantly higher in the group between the ages of 20–30 in group I compared to those aged 31–50 and over 50 (both p<0.01). It was found significantly higher in normal-weight individuals than in the overweight and obese group (both p<0.01). IgG antibody levels were found significantly lower in people with cardiovascular disease and diabetes mellitus compared with those who did not (p<0.05 and p<0.001, respectively). There was a negative correlation between IgG antibody response values and body mass index and age in Group I (r= -0.336, p<0.001 and r= -0.307, p<0.001, respectively). CONCLUSION: IgG antibody values decrease with age and with increasing body mass index. The presence of comorbidities (i.e., diabetes mellitus and cardiovascular disease) decreased COVID-19 IgG antibody values. © 2021 Associacao Medica Brasileira. All rights reserved.
Investigation of Factors Affecting Viral Clearance Time by Real-Time Polymerase Chain Reaction Method in Nasopharyngeal Swab Samples of COVID-19 Patients
(Ankara Microbiology Soc, 2022) Doğan, Mustafa; Çelikkol, Aliye; Yılmaz, Berna; Erdem, İlknur
The coronavirus disease-2019 (COVID-19) pandemic continues to threaten the lives of millions of people. Viral shedding through the respiratory tract is the main risk factor for the transmission of the severe acute respiratory syndrome-2 (SARS-CoV-2) virus from sick individuals to healthy individuals. In this study, we aimed to investigate the viral clearance (VC) time in PCR tests of COVID-19 patients and the possible factors affecting this time. Seventy patients older than 18 years of age whose presence of SARS-CoV-2 virus was proven by real-time polymerase chain reaction (Rt-PCR) in nasopharyngeal swab samples were included in the study. The presence of SARS-CoV-2 RNA was investigated by RT-PCR in nasopharyngeal swab samples at 48-72 hour intervals, five days after the initial diagnosis. Demographic, physical examination, laboratory test, computed tomography (CT) results, concomitant diseases, and duration of VC were recorded. Of the cases, 41 were female and 29 were male. The mean age was 45.8 +/- 19.2 years. According to the CT results, in the group with no involvement, local involvement and widespread involvement, the duration of VC was 9.66 +/- 5.91 days, 9.99 +/- 4.68 days, and 10.94 +/- 5.34 days, respectively (p>0.05). While the duration of VC was determined as 8.93 +/- 4.33 days in the group without comorbidity, this period was found to be 12.26 +/- 5.69 days (p=0.025) in the group with the comorbidity. It was determined that the duration of VC was 9.55 +/- 6.37 days in women and 9.20 +/- 7.22 days in men (p=0.040). The duration of VC was found to be 10.18 +/- 7.1 days in patients over 50 years of age and 8.87 +/- 5.15 days under 50 years of age (p=0.03). A significant correlation was found between the laboratory test lactate dehydrogenase level and VC duration (p=0.007). However, a significant relationship could not be established between other laboratory test results and the duration of VC. In this retrospective observational study, the relationship between viral clearance duration in Rt-PCR and gender, age, CT results, comorbidities and laboratory results in nasopharyngeal swab samples was investigated and it was determined that the duration of VC was significantly prolonged in case of female gender, being over 50 years old and having a comorbid disease. The results obtained may contribute to predict the isolation times of the patients and to reveal the factors that may affect viral shedding.
Investigation of serum E-Cadherin, VEGF121, Survivin, Tenascin C and Tetraspanin 8 levels in patients with glioblastoma
(Aepress Sro, 2023) Tunçkale, Tamer; Çalışkan, Tezcan; Potoğlu, Bilgehan; Engin, Taner; Güzel, Savaş; Çelikkol, Aliye; Yılmaz, Ahsen
OBJECTIVE: The aim of this study is to determine biomarkers, which may be used in order to understand the pathophysiology, the diagnosis, progression surveillance/monitoring, and treatment efficacy of high graded glial tumors.BACKGROUND: Radiological imaging in the diagnosis and relapse surveillance of glial tumors is sometimes insufficient. There is need for additional methods of diagnosis and surveillance in order to rule out contradictory circumstances.METHOD: Using enzyme like immune sorbent assay method, E-Cadherin, Tenascin C, Tetraspanin 8, Survivin and VEGF121 levels were investigated in serum and tumor tissues of 28 patients diagnosed with pathological glioblastoma, and in the serum of 26 healthy individuals. Correlation between tumor tissue values and Ki67 percentage, and P53 mutation, and difference between unhealthy and healthy serum levels were sought.RESULTS: It was found out that E-Cadherin and VEGF 121 levels in the unhealthy serum were high in comparison to the control group (p < 0.05). In the patient group, there was no correlation determined between tissue and serum levels of all biomarkers and mutation percentages of Ki67 and p53 (p > 0.05). CONCLUSION: EC and VEGF121 are biomarkers, which have the potential to be used in the diagnosis, recurrence and treatment follow-up in high graded glial tumors (Tab. 2, Fig. 1, Ref. 37). Text in PDF www.elis.sk
Investigation of Serum Folate-Receptor-1 in Patients with Non- Small Cell Lung Cancer
(Duzce Univ, Fac Medicine, 2022) Çelikkol, Aliye; Seber, Erdoğan Selçuk; Güzel, Savaş; Yolcu, Ahmet; Yetişyiğit, Tarkan; Yılmaz, Ahsen
Objective: Histopathological overexpression of folate receptor-1(FOLR1) involved in folate transport in cell growth has been reported in various cancers. Increased serum FOLR1 (sFOLR1) has also been reported in epithelial ovarian cancer. The aim was to investigate sFOLR1 levels in non-small cell lung cancer(NSCLC) patients and the response prediction of the standard chemotherapy targeting folic acid metabolism. Methods: In this prospective study, sFOLR1 levels were investigated in 30 healthy individuals and 60 patients with stage4 malign metastatic NSCLC before and after standard chemotherapy. The commercial immunoassay(ELISA) kit was used for the analysis of sFOLR1. Serum carcinoembryonic antigen(CEA), vitamin B12, and folate levels were also investigated. Results: In NSCLC patients sFOLR1 levels were significantly higher(p<0.001) than the healthy individuals. After 3 months of standard treatment, sFOLR1 was significantly lower than pre-treatment values in NSCLC patients(p<0.001). Diagnostic accuracy was strong in the differentiation of NSCLC patients from healthy individuals(AUC= 0.966). with the cut-off point of 82.45 pg/ml, the sFOLR1 level was performed with 95% sensitivity and 99% specificity. Pretreatment sFOLR1 levels were significantly lower in patients with-response to standard chemotherapy(p<0.01). The best predictive value was determined as 393.80 pg/ml. At the end of the 401 days, a significant difference was found in patients with high sFOLR1 predictive value. The median overall survival(OS) duration was 288 days for all patients (95% GA 198.13-377.87). Median progression-free survival(PFS) was 321 days(95% GA 211.90-430.10). Conclusions: For monitoring standard chemotherapy with drugs targeting folic acid metabolism, sFOLR-1 levels be an biomarker.
Long-lasting cognitive effects of COVID-19: is there a role of BDNF?
(Springer Heidelberg, 2022) Demir, Biçem; Beyazyüz, Elmas; Beyazyüz, Murat; Çelikkol, Aliye; Albayrak, Yakup
Coronavirus disease 2019 (COVID-19) affects numerous systems of the body during the illness, and there have been long-lasting effects. BDNF plays an important role in synaptic plasticity and synaptic communication. According to the inclusion and exclusion criteria, 54 patients who had COVID-19 infection participated in this study. Thirty-six age-, sex-, body mass index (BMI)-, education level- and smoking status-matched healthy controls were included in the present study. All participants were individually administered the Stroop test and Visual Aural Digit Span Test Form B (VADS-B). Serum BDNF levels were measured by ELISA. Stroop test word reading spontaneous correction number and reading time, word color saying wrong number, spontaneous correction number and reading time, box color speaking spontaneous correction number and reading time, Stroop interference and speed factor duration were significantly higher in the COVID-19 group than in the control group. All scores of the VADS-B test were found to be significantly lower in the COVID-19 group. The mean serum BDNF levels were found to be 10.9 +/- 6.9 ng/ml in the COVID-19 group and 12.8 +/- 6.4 ng/ml in the healthy control group. Two-way ANOVA showed that the serum mean BDNF level was significantly lower in the COVID-19 group than in the control group. Gender had a significant effect on BDNF levels (F = 12.21; p = 0.008). The present study is the first to demonstrate the association between the role of serum BDNF and cognitive decline in patients with COVID-19 infection. Additionally, there is a significant role of male gender in terms of lower BDNF level and cognitive decline.
Low Antioxidant Enzyme Levels and Oxidative Stress in Laryngopharyngeal Reflux (LPR) Patients
(Mosby Inc., 2021) Bulut, F.; Tetiker, A.T.; Çelikkol, Aliye; Yılmaz, A.; Ballica, B.
Objective: Laryngopharyngeal reflux disease (LPR) is a characterized by symptoms different from gastroesophageal reflux disease (GERD). LPR can causes chronic mucosal inflammation which may lead to an increase in cytokine production, and a systemic decrease in antioxidant enzyme levels. Our aim in this study is to evaluate antioxidant enzyme levels in patients with LPR. Methods: Reflux Symptom Index (RSI) questionnaire, extraesophageal symptom questionnaire which is included in RSI and Reflux Finding Score (RFS) evaluation with 70° rigid laryngoscope were performed to patients who applied to the otolaryngology clinic with a typical LPR complaint, and 60 patients who had an RSI score above 13 and an RFS score above 7 were included in the study. Thirty people consisting of healthy volunteers were included in the control group. Antioxidant enzyme SOD, GSH-Px and CAT levels were measured in the blood serum of the patients and compared with the control group. Results obtained from biochemical tests were expressed as mean ± SE. Descriptive statistical methods (mean ± standard error) were used for the independent t test for the control and study group. P < 0.05 was considered statistically significant. Results: In the LPR group, 28 (46%) were women, 32 (53%) were men, and age range was 21–60, average age was 36.45 ± 1.147.There was no significant difference between LPR and control group in terms of age, gender and Body Mass Index (BMI). In the LPR group, the lowest score for RSI was 14 and the highest score was 39. The average RSI was 23.67. RFS ranges from 8–22. The mean RFS was 13.50. A highly significant statistical correlation was observed between RSI and total RFS (P < 0.001). There was a significant difference between the antioxidant enzyme levels of the control group and the LPR group. Antioxidant enzyme levels of the control group were SOD 274.10 ± 26.836 U / L, GSH-Px 174.20 ± 20.699 µU / mL and CAT 42.2898 ± 20.699 KU / L. Antioxidant enzyme level results of the LPR group were SOD 147 ± 14.022 U / L (P < 0.01), GSH-Px 88.28 ± 9.113 µU / mL (P < 0.01) and CAT 12.67 ± 0.799 KU / L (P < 0.001). The RSI results ranges from 4 to 39 and the RFS from 8 to 22. Antioxidant enzyme levels demonstrated fairly consistent reliability with individual variables from both RFS and RFS. There was also a highly significant statistical correlation between RSI and RFS. Conclusion: We found that the antioxidant enzymes SOD, GPX and catalase enzyme levels were significantly lower in LPR patients. Treatment modalities to reduce oxidative stress (OS) in LPR should be investigated. © 2021 The Voice Foundation
Neoadjuvan Tedavi Alan Meme Kanserli Hastalarda Yeni Bir Enflamatuvar Belirteç Olan Serum Kalprotektin Düzeyinin Tedaviye Yanıtta Prediktif Değeri
(2023) Baydar, Ece; Çelikkol, Aliye; Gürdal, Sibel Özkan; Şeber, Erdoğan Selçuk
Amaç: Enflamasyon ile kanser arasındaki yakın ilişki vardır. Kalprotektin enflamasyon sırasında salınan bir proteindir. Bu çalışma ile neoadjuvan tedavi alan meme kanserli hastalarda kalprotektin seviyesi ile meme kanseri ilişkisi ve tedavi yanıtı için kalprotektinin prediktif rolünün araştırılması amaçlanmıştır. Gereç ve Yöntem: Prospektif bir araştırma olarak dizayn edilen çalışmamızda 69 meme kanseri tanılı hasta ile hasta grubu ve 20 hasta ile kontrol grubu oluşturuldu. Örneklemin tamamından alınan kan tetkiklerinden kalprotektin çalışıldı. Hasta verileri elektronik kayıt sisteminden elde edildi. Çalışmamızda istatistiksel değerlendirmeler IBM Statistical Package for the Social Sciences Statistics 24 adlı paket program kullanılarak yapıldı. Bulgular: Çalışmaya 89 hasta (69 kanser, 20 kontrol) dahil edildi. Meme kanseri hastalarının median yaşı 48 [minimum (min): 24-maksimum (maks): 73], kontrol grubunda 44,5 (min: 19-maks: 68) olarak saptandı ve iki grubun yaşları benzerdi (p=0,599). Meme kanseri hastalarında kalprotektin düzeylerinin ortalaması 28,63±30,5, median 16,5 (min: 6,7-maks: 160,7) saptandı. Kontrol grubunda ortalama 16,09±6,1 (min: 8,7-maks: 27,4) olarak görüldü ve 2 grup arasında istatistiksel fark yoktu (p=0,072). Ki67 sınıflarına göre kalprotektin değerleri açısından istatistiksel olarak anlamlı farklılık tespit edildi (Z=-20,043; p=0,041). Ki67 sınıfı >20 olanların kalprotektin değerleri, ?20 olanlara göre istatistiksel olarak anlamlı düzeyde daha yüksekti. Kemoterapi tam yanıtını ön görebilecek parametreler lojistik regresyon analizi ile değerlendirildi. Kalprotektin düzeyi ile tam yanıt arasında ilişki yoktu. Yaş artışı ile tam yanıt arasında pozitif bir ilişki vardı. Sonuç: Hasta ve kontrol grubunun serum kalprotektin düzeyleri arasında anlamlı fark saptanmadı fakat kalprotektin seviyesi Ki67 düzeyi ile ilişkili bulundu. Bu önemli ilişkisine rağmen kalprotektin ile kemoterapi yanıtı arasında ilişki yoktu. Daha büyük örneklem sayıları ile yapılacak çalışmalar anlamlı bir fark oluşturabilir.
nvestigation of Serum Folate-Receptor-1 in Patients with Non- Small Cell Lung Cancer
(2022) Şeber, Erdoğan Selçuk; Yetişyiğit, Tarkan; Yolcu, Ahmet; Çelikkol, Aliye; Güzel, Savaş; Yılmaz, Ahsen
Objective: Histopathological overexpression of folate receptor-1(FOLR1) involved in folate transport in cell growth has been reported in various cancers. Increased serum FOLR1 (sFOLR1) has also been reported in epithelial ovarian cancer. The aim was to investigate sFOLR1 levels in non-small cell lung cancer(NSCLC) patients and the response prediction of the standard chemotherapy targeting folic acid metabolism. Methods: In this prospective study, sFOLR1 levels were investigated in 30 healthy individuals and 60 patients with stage4 malign metastatic NSCLC before and after standard chemotherapy. The commercial immunoassay(ELISA) kit was used for the analysis of sFOLR1. Serum carcinoembryonic antigen(CEA), vitamin B12, and folate levels were also investigated. Results: In NSCLC patients sFOLR1 levels were significantly higher(p<0.001) than the healthy individuals. After 3 months of standard treatment, sFOLR1 was significantly lower than pre-treatment values in NSCLC patients(p<0.001). Diagnostic accuracy was strong in the differentiation of NSCLC patients from healthy individuals(AUC= 0.966). with the cut-off point of 82.45 pg/ml, the sFOLR1 level was performed with 95% sensitivity and 99% specificity. Pretreatment sFOLR1 levels were significantly lower in patients with-response to standard chemotherapy(p<0.01). The best predictive value was determined as 393.80 pg/ml. At the end of the 401 days, a significant difference was found in patients with high sFOLR1 predictive value. The median overall survival(OS) duration was 288 days for all patients (95% GA 198.13-377.87). Median progression-free survival(PFS) was 321 days(95% GA 211.90-430.10). Conclusions: For monitoring standard chemotherapy with drugs targeting folic acid metabolism, sFOLR-1 levels may be an important biomark

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