Fakülteler / Faculties
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Item Serum YKL-40 (Chitinase 3-Like Protein 1) Levels in Migraine Patients During An Attack(2023) Horasanli, Bahriye; Sak, Zeynep Caliskan; Ozsahin, Aysun; Karabulut, Keziban UcarObjectives: The aim of this study was to investigate YKL-40 in migraine patients during migraine attacks. Methods: In this prospective study, 30 migraine patients with aura (MWA) and 30 migraine patients without aura (MWOA) who presented to the Neurological Outpatient Department of Konya City Hospital during a migraine episode as well as 28 healthy controls were included. According to the manufacturer's recommendations, serum YKL-40 levels were determined using an ELISA kit (FineTest). Statistical analysis of the data was performed with the IBM SPSS version 20.0 program. Results: The mean gender and age were similar between groups (p > 0.05). The serum YKL-40 level was 3575 +/- 604.975 pg/ml in the MWA group, 3339 +/- 492.689 pg/ml in the MWOA group and 3190 +/- 544.018 pg/ml in the control group. YKL-40 levels were significantly higher in MWA than in the control group (p=0.028). YKL-40 levels were similar in the MWA and MWOA groups (p=0.302). No significant difference was found between the group with MWOA and the control group (p=0.915). Conclusion: Although YKL-40 levels are increased in patients with migraine with aura during an attack, comprehensive studies with a larger sample are needed to clarify the relationship between YKL-40 and migraine.Item Assessment of Tear Meniscus with Optical Coherence Tomography in Thyroid-Associated Ophtalmopathy(2014) Sizmaz, Selcuk; Altan-Yaycioglu, Rana; Bakiner, Okan Sefa; Bozkirli, Emre; Coban-Karatas, Muge; Ulas, Burak; https://orcid.org/0000-0002-9139-8848; 24215623; AAG-3306-2019; AAK-5525-2021; E-9887-2014; AEP-4897-2022Purpose: To evaluate the tear-film meniscus with optical coherence tomography (OCT) in patients with Graves' disease (GD). Materials and methods: Patients with GD without clinical features of thyroid-associated ophthalmopathy (TAO) (Group 1, n = 35), patients with signs of TAO (Group 2, n = 31) and healthy participants (Group 3, n = 31) were enrolled. Palpebral fissure width, Schirmer test, tear break-up time (TBUT) test and tear-film meniscus height and area obtained with Fourier-domain-OCT were analyzed. Results: TBUT test scores were 8 s (2-25) in Group 1, 8 s (2-15) in Group 2 (p = 0.380); and10 s (5-17) in Group 3 (p = 0.000 Group 1 versus 3, and 0.000 for Group 2 versus 3). Tear-film meniscus height did not significantly differ between Groups 1 and 2 (257.5 mm (86-962) and 258 mm (99-1340), respectively, p = 0.980). In Group 3, tear-film meniscus height was 316 mm (122-720) (p = 0.005 Group 1 versus 3 and 0.004 for Group 2 versus 3). Tear-film meniscus area did not significantly differ between Groups 1 and 2 (0.025mm(2) (0.004-0.250) and 0.024mm(2) (0.003-0.316), respectively, p = 0.850). In Group 3, tear-film meniscus area was 0.048mm(2) (0.006-0.75) (p = 0.000 Group 1 versus 3 and 0.000 for Group 2 versus 3). Conclusion: Tear function is significantly disturbed in GD. OCT is an effective way to assess the tearing function also in patients with GD.Item Free Triiodothyronine in Hemodialysis Patients Link With Malnutrition and Inflammation(2014) Yavuz, Demet; Sezer, Siren; Yavuz, Rahman; Canoz, Mujdat Batur; Altinoglu, Alpaslan; Elsurer, Rengin; Arat, Zubeyde; Ozdemir, Fatma Nurhan; https://orcid.org/0000-0002-4082-6320; https://orcid.org/0000-0002-7326-8388; https://orcid.org/0000-0002-5682-0943; 24878944; ABG-9980-2021; JYQ-2550-2024; AAK-1697-2021Introduction. Free triiodothyronine (FT3) is a marker of comorbidity in end-stage renal disease and in many acute and chronic diseases. There is lack of data about the link between FT3 levels and malnutrition and inflammation in hemodialysis patients. The objective of the present study was to investigate the link between FT3 and malnutrition and inflammation in hemodialysis patients. Materials and Methods. A total of 84 patients were included in the study (38 men and 46 women; mean age, 56.2 +/- 14.8 years; hemodialysis duration, 95.72 +/- 10.35 months). Serum FT3, free thyroxin, and thyroid-stimulating hormone concentrations were determined. Demographic data and laboratory values were evaluated. Patients' comorbidity status was determined using the Charlson Comorbidity Index (CCI), and malnutrition-inflammation status was determined by Malnutrition-Inflammation Score (MIS). Results. Serum FT3 concentration inversely correlated with age (r = -0.328, P =.002), CCI (r = -0.591, P < .001), C-reactive protein (r = -0.299, P =.01), and MIS (r = -0.671, P < .001), and positively correlated with serum albumin (r = 0.389, P < .001). In multivariate linear regression analysis, FT3 was independently associated with MIS (beta, -0.14; 95% confidence interval, -0.175 to 0.063, P = .003), adjusted for CCI, C-reactive protein level, serum albumin level, and MIS. Conclusions. The results of this study indicate that FT3 is negatively correlated with inflammatory markers, namely C-reactive protein, and it is independently related with MIS in hemodialysis patients. Therefore, we suggest that FT3 can be accepted as an inflammatory marker in hemodialysis patients.Item Serum YKL-40/chitinase 3-Like Protein 1 Level Is an Independent Predictor of Atherosclerosis Development in Patients with Obstructive Sleep Apnea Syndrome(2015) Bakirci, Eftal Murat; Unver, Edhem; Degirmenci, Husnu; Kivanc, Tulay; Gunay, Murat; Hamur, Hikmet; Buyuklu, Mutlu; Ceyhun, Gokhan; Topal, Ergun; Coban, Taha Abdulkadir; 26142786Objective: The inflammatory process plays an important role in the development of cardiovascular complications in patients with obstructive sleep apnea syndrome (OSAS). YKL-40/chitinase 3-like protein 1 is a novel biomarker of systemic inflammation. This study aimed to investigate whether carotid intima-media thickness (CIMT), a useful marker for early atherosclerosis, is associated with serum YKL-40/chitinase 3-like protein 1 levels in patients with normotensive and nondiabetic OSAS. Methods: The study included 40 OSAS patients and 40 agesex- and body mass index-matched healthy controls. Serum YKL-40 levels were detected by enzyme-linked immunosorbent assay. CIMT was measured by B-mode ultrasound. Results: The patients with OSAS had significantly increased CIMT and higher YKL-40 and high sensitivity C-reactive protein (hsCRP) levels than those of the controls. CIMT was strongly correlated with serum YKL-40 levels (r=0.694, p<0.001), hsCRP (r=0.622, p<0.001), age (r=0.525, p=0.001), and weakly correlated with apnea-hypopnea index (AHI) (r=0.365, p=0.021) and the percentage of recording time spent (PRTS) of oxygen saturation <90% (r=0.488, p=0.001). Moreover, it was detected that serum YKL-40 levels were strongly correlated with AHI (r=0.617, p<0.001), and weakly correlated with SaO 2 <90% of PRTS (r=0.394, p=0.012) and hsCRP (r=0.486, p=0.001). In multiple regression analyses, age and serum levels of YKL-40 and hsCRP were found to be independent predictors of CIMT. Conclusion: In patients with OSAS, CIMT was increased. This increase was associated with serum YKL-40 level. Increased serum level of YKL-40 may be an early predictor of atherosclerosis development in patients with OSAS.Item Long-Term Inflammatory Response to Liquid Injectable Silicone, Cartilage, and Silicone Sheet(2014) Hizal, Evren; Buyuklu, Fuat; Ozdemir, B. Handan; Erbek, Selim S.; https://orcid.org/0000-0002-9699-6783; https://orcid.org/0000-0003-1528-0036; https://orcid.org/0000-0002-7528-3557; https://orcid.org/0000-0003-4825-3499; 24966072; A-5853-2018; W-5941-2018; X-8540-2019; B-7604-2019Objectives/HypothesisTo show and compare the long-term inflammatory responses to subdermal microdroplet injections of 1,000 centistoke (cS) and 5,000 cS liquid injectable silicone (LIS), and to assess the applicability of insulin pen as an alternative LIS delivery device in an animal model. Study DesignAnimal study. MethodsEighteen healthy adult Sprague-Dawley rats were used. Two graft recipient sites and four injection sites were prepared on each rat's back for: 1) autogenous auricular cartilage graft; 2) silicone sheet; 3) 1,000 cS LIS injection with insulin syringe; 4) 1,000 cS LIS injection with insulin pen; 5) 5,000 cS LIS injection with insulin syringe; and 6) 5,000 cS LIS injection with insulin pen. The animals were followed up for 6 months, and skin biopsies were examined for the evaluation of LIS microdroplets in situ and the degree of inflammatory tissue response. Immunohistochemistry was used for the examination of macrophages and the density of microvessels. ResultsBiopsies from 17 animals were assessed. There was no statistically significant difference among the groups in terms of the number of lymphocytes (P=0.081), macrophages (P=0.857), and neutrophils (P=0.995), the degree of vascular proliferation (P=0.698), and the mean LIS microdroplet diameter (P=0.540). Grossly, there was no sign of granuloma formation in any of the specimens. ConclusionThere is a low-grade, well-tolerated long-term inflammatory response to microdroplet injections of 1,000 cS and 5,000 cS LIS that is comparable to autogenous cartilage graft in rats. Standard dose delivery devices such as insulin pens can be used for controlled LIS injections. Level of EvidenceN/A. Laryngoscope, 124:E425-E430, 2014Item Initial neutrophil-to-lymphocyte ratio predicts radiation-induced trismus in parotid gland cancer(2023) Somay, Efsun; Yilmaz, Busra; Topkan, Erkan; Kucuk, Ahmet; Pehlivan, Berrin; Selek, Ugur; 0000-0001-8120-7123; 36349491; AAG-2213-2021ObjectiveTo investigate the link between pretreatment neutrophil-to-lymphocyte ratio(NLR) and the incidence of radiation-induced trismus(RIT) in parotid gland cancers(PGC) patients after postoperative radiotherapy(PORT). MethodData of PGC patients who had oral examinations before and after PORT were reviewed retrospectively. We comprised patients who had maximum mouth opening (MMO) assessments before and after PORT and complete blood count test on the first day of PORT. MMO of <= 35 mm was considered as RIT. The receiver operating characteristic (ROC) curve analysis was used to search for an ideal NLR threshold value that might be linked to RIT rates. ResultsFifty-one patients were included, with a RIT incidence of 15.7%. The NLR cutoff that showed a link with the prevalence of RIT in the ROC curve analysis was 2.7[Area under the curve (AUC):82.0%; sensitivity:87.5%; specificity:74.4%]. The patients were divided into groups based on this value:Group 1: NLR <= 2.7 (N = 34) and;NLR >2.7 (N = 17). In comparative analysis, the incidence of RIT was found to be statistically higher in the NLR >2.7 than counterpart (35.2%vs.5.8%;r(s):0.79; p < .001). Also, a mean temporomandibular joint dose >= 51.0Gy was linked to increased RIT rates (p < .001). ConclusionThis study showed that high pre-PORT NLR levels were a robust and independent predictor of significantly elevated rates of RIT.Item QTc interval is associated with increased inflammatory markers (neutrophil-to-lymphocyte ratio and LDH level) in COVID-19 patients(2021) Torun, Serife; Ozer, Nurtac; Celik, Olgun; Akcay, M. Sule; 0000-0002-7190-5443; AAD-5477-2021Purpose: This study aimed to investigate the association between QTc interval and laboratory parameters in COVID-19 patients before and after the treatment. Materials and Methods: Forty-three COVID-19 patients who had baseline and follow-up ECG findings and laboratory reports were evaluated and 40 patients were included in the study. Results: Among 40 patients, 16 were women and 24 were men. The neutrophil-to-lymphocyte ratio (NLR) and corrected QT (QTc) interval were significantly higher in females than males. After the treatment, a significant fall in CRP and ferritin values, and significantly prolonged QTc interval were seen. A significant positive correlation was observed between QTc interval and age, LDH levels, neutrophil and leukocyte count, NLR, magnesium levels, and heart rate of the patients prior to treatment. A positive correlation was observed between increased QTc interval and decreased LDH levels and NLR after treatment. Conclusion: QTc prolongation was associated with increased inflammatory markers, increased NLR and LDH levels before and after treatment in COVID-19 patients. The increase in the QTc interval was correlated with the reduction in LDH levels and NLR with treatment.Item Does methylene blue increases capsular contracture in immediate breast reconstruction with silicone implant? An experimental study(2020) Albayati, Abbas; Ozkan, Burak; Atilgan, Alev O.; Sencelikel, Tugce; Uysal, Cagri A.; Ertas, Nilgun M.; 0000-0003-2806-3006; 0000-0001-8595-8880; 0000-0001-6236-0050; 0000-0003-3093-8369; 33030384; AAC-3344-2021; AAK-3333-2021; AAJ-2949-2021Recently, most of the immediate breast reconstructions following mastectomy are being carried out with the use of silicone implants. In these patients, methylene blue is being used for the detection of sentinel lymph nodes. This experimental study was performed to determine the effect of methylene blue on capsular contracture around breast implants. Thirty-two Sprague Dawley rats were divided into 4 groups. Custom made silicone blocks were placed on the back of animals. In group 1, the incision was closed without performing any additional procedure. In group 2 (control), 0.1 mL of 0.9% normal saline was instilled into the pocket. Group 3 and 4 (study groups) received 0.1 and 0.2 mL of 1% methylene blue, respectively. On postoperative day 60, implants and capsular tissue were extracted. Capsule formation was evaluated both macroscopically and microscopically. The histological evaluation included capsule thickness, inflammation, neovascularization, and fibrosis gradients. Regarding capsule thickness, there were statistically significant differences between groups 1-3, 1-4, 2-3, and 2-4. Although there were more moderate and severe inflammation gradients in groups III and IV, there was no significant difference regarding inflammation severity between control and study groups. In respect of vascular proliferation, there was a statistically significant difference between control and study groups. Similarly, fibrosis gradients were higher in both groups 3 and 4. The study showed that the injection of methylene blue around silicone implants enhanced the formation of capsular contracture. In this case, the degree of contracture was independent of the dose given.Item The effect of nutrition theraphy on oxidative stress, inflammation, glycemic control in type 2 diabetes patients(2019) Colak, Gozde Aritici; Kiziltan, GulAims: Type 2 diabetes mellitus is a metabolism disease which is seen frequently among adult population in Turkey. The aim of this study was to determine the medical nutrition theraphy effect on oxidative stress, inflammation, glycemic control in type 2 diabetes patients. Methods: An interventional study was carried on 35 type 2 diabetes ages between 20-65 years old at the Department of Endocrinology of Baskent University Istanbul Hospital in 2015. In 3 month period a personal nutrition theraphy was applied. Biochemical parameters, anthropometric measurements and body analysis were also determined. The three day food consumption and biochemical parameters were requested at the beginning and at the end of the study. Results: When the impact of the blood values of the new medical nutrition theraphy which the patients practiced during the first visit and the follow up visit were compared; it was seen that there was a significant decrease on fasting plasma glucose, fasting insulin, HbA1c, CRP, TG and MDA values (p<0.05). The mean diabetic age of the patients was 7.63 +/- 6.22 years. When diabetic age of the patients was increased, there was a positive correlation between the fasting plasma glucose and HbA1c values (p<0.05). Conclusions: Type 2 diabetes patients were evaluated 3 month of medical nutrition theraphy and it was seen that the personal medical nutritional theraphy contributed to providing glisemic control and decreasing oxidative stress and inflammation.