Emir DONDER

Dr. Emir DONDER

orcid

Research Focus & Metrics

Academic Career Length

30Years (1997-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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12 February 2001 in Cell Biochemistry and Function
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GBGiyasettin Baydaş
Giyasettin Baydaş
EEErgul Erçel
Ergul Erçel
HCHalit Canatan
Halit Canatan
EDEmir DONDER
Emir DONDER
AAAli Akyol
Ali Akyol

11 May 2020
Verified
Journal Article
Open access
EOErhan Onalan
Erhan Onalan
EDEmir DONDER
Emir DONDER
Chronic lymphocytic thyroiditis is among the most common causes of hypothyroidism along with HT (Hashimoto's thyroiditis) goitre, which is also named as autoimmune thyroiditis. Our study aims to determine the usefulness of PLR (platelet to lymphocyte ratio) and NLR (neutrophil to lymphocyte ratio), which can be obtained with a hemogram, at the clinical course or the severity of the disease in patients with Hashimoto's thyroiditis. Our study is a retrospective cross-sectional study that included 121 hypothyroid or subclinical hypothyroid Hashimoto's thyroiditis patients and a healthy control group comprised of 100 individuals. Thyroid-stimulating hormone (TSH), free triiodothyronine (FT3), free thyroxine (FT4), anti-thyroid peroxidase (anti-TPO), complete blood count (CBC), and C-reactive protein (CRP) results were obtained from patient files for both HT patients and the control group, and we computed PLR and NLR for both groups. PLR was lower in patients diagnosed with HT compared to the healthy control group, with statistical significance (respectively, 130.8±50.5 versus 145.3±58.5; p<0,05). NLR was higher in patients diagnosed with HT compared to the control group and a statistically significant relationship was determined (respectively, 2.43±0.94 versus 2,11±0,81; p<0,05). In addition to the present findings, we determined that PLR and NLR were correlated with anti-TPO, TSH, and FT4, although without statistical significance. As values that can be measured with an inexpensive and easily accessible routine hemogram, PLR and NLR can serve as practical and valuable markers at the clinical course or the severity of the disease and other diseases that are autoimmune and progress with chronic inflammation.

10 March 1997 in Archives of internal medicine (1960)
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HÇHarika Çelebi
Harika Çelebi
EDEmir DONDER
Emir DONDER
HÇHüseyin Çeliker
Hüseyin Çeliker
Background: Hepatorenal syndrome, a well-recognized complication of established liver disease, is characterized by early renal vasoconstriction before clinically recognized renal disease. Renal vasoconstriction causes increased renal vascular resistance, which can be detected noninvasively by Doppler ultrasonography. Objective: To detect early renal hemodynamic changes in patients with hepatic cirrhosis who had clinically normal renal functions. Patients: Twenty patients with hepatic cirrhosis and ascites, 11 patients with hepatic cirrhosis without ascites, and 23 healthy control subjects. All cirrhotic patients had normal serum urea nitrogen and creatinine values. Main Outcome Measures: Peak systolic, peak diastolic, and mean flow velocities; pulsatile index; resistive index; and peak systolic velocity/peak diastolic velocity ratio as measured by renal Doppler ultrasonography. Results: Peak diastolic flow velocity was significantly lower in cirrhotic patients with ascites than in cirrhotic patients without ascites and control subjects (P<.02 andP<.004, respectively), but the peak systolic flow velocity/peak diastolic flow velocity ratio (P<.007 andP<.001, respectively), pulsatile index (P<.007 andP<.001, respectively), and resistive index (P<.007 andP<.001, respectively) were significantly higher in cirrhotic patients with ascites than in cirrhotic patients without ascites and controls. Conclusion: Renal Doppler ultrasonography can noninvasively identify a subgroup of nonazotemic patients with hepatic cirrhosis who are at high risk for subsequent development of renal dysfunction and hepatorenal syndrome. Arch Intern Med. 1997;157:564-566

3 September 2019 in European Journal of Rheumatology
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Journal Article
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SKSüleyman Serdar KOCA
Süleyman Serdar KOCA
MKMurat Kara
Murat Kara
MÖMetin Özgen
Metin Özgen
RDRamazan Dayanan
Ramazan Dayanan
CDCaner Feyzi Demir
Caner Feyzi Demir
AIAhmet Işık
Ahmet Işık
Objective: Chronic inflammatory diseases are associated with altered body composition. Ghrelin has anti-inflammatory effects, and its level is altered in obesity and inflammatory diseases. The aim of the study was to evaluate the prevalence of obesity and ghrelin and obestatin levels in patients with Behçet’s disease (BD). Material and Methods: One hundred and forty-three (143) patients with BD and 112 healthy controls (HC) were enrolled. Participants were subdivided according to the body mass index (BMI) as lean (0.05 for all) although the obestatin level was higher in the BD group compared to the HC group (p<0.001). Serum UAG, TG and obestatin levels were lower in obese BD patients (n=18) than non-obese BD patients (p=0.027, p=0.014 and p=0.001, respectively). Conclusion: The obestatin level was high and the prevalence of obesity was low in the BD group. Moreover, obese BD patients had low obestatin levels. These results suggest that obestatin may protect BD patients from obesity.

10 July 2025 in Medicina
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ABAYKUT BULU
AYKUT BULU
Erhan ÖnalanErhan Önalan
Erhan Önalan
BYBurkay Yakar
Burkay Yakar
GBGulay Bulu
Gulay Bulu
SYSenanur Onalan Yıldırım
Senanur Onalan Yıldırım
TKTUGÇE KAYMAZ
TUGÇE KAYMAZ
Background and Objectives: This study aimed to investigate the relationship between Maresin-1 (MaR1), Chitinase-3-like protein 1 (CHI3L1), and inflammatory as well as hematological markers in patients with type 2 diabetes mellitus (T2DM) and diabetic nephropathy (DN). Materials and Methods: This cross-sectional study included 90 participants divided into three groups: healthy controls (n = 30), patients with T2DM (n = 30), and patients with diabetic nephropathy (n = 30). The serum levels of MaR1 and CHI3L1 were measured using ELISA. Biochemical and hematological parameters were also assessed. Statistical comparisons were conducted using non-parametric tests, and correlations were analyzed via Spearman correlation. Results: Serum MaR1 levels were significantly higher in DN patients compared to both T2DM patients and controls (p < 0.01), while CHI3L1 levels were significantly lower in the DN group compared to controls (p = 0.007). MaR1 showed a positive correlation with CRP, BUN, and creatinine, and a negative correlation with GFR. CHI3L1 levels were positively correlated with GFR and negatively with BUN. Inflammatory markers such as CRP were elevated in the diabetic groups, while no significant differences were found in NLR values. Conclusions: Elevated MaR1 levels in DN patients and their correlation with renal dysfunction markers suggest that MaR1 may serve as a potential prognostic biomarker in diabetic nephropathy. The unexpected decrease in CHI3L1 levels in DN patients indicates the need for further research to clarify their role. These findings indicated that MaR1 and CHI3L1 should be further investigated in future studies as indicators for the early detection and monitoring of diabetic complications.

28 May 2025 in Medicina
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ABAYKUT BULU
AYKUT BULU
Erhan ÖnalanErhan Önalan
Erhan Önalan
BYBurkay Yakar
Burkay Yakar
GBGülay Bulu
Gülay Bulu
SYSenanur Onalan Yıldırım
Senanur Onalan Yıldırım
EDEmir DONDER
Emir DONDER
Background and Objectives: Polycystic ovary syndrome (PCOS) is one of the most common endocrine disorders in women of reproductive age. The etiology of PCOS is complex and is associated with low-grade chronic inflammation. The current study aimed to investigate inflammation markers in PCOS patients with and without metformin treatment. Materials and Methods: This cross-sectional study included 30 age-matched PCOS patients not receiving metformin treatment, 50 PCOS patients receiving metformin treatment, and 30 healthy controls. The groups were compared according to inflammatory (hs-CRP, NLR, and PLR) and metabolic parameters (lipids, fasting blood-sugar insulin, HOMA-IR). Results: Insulin (p < 0.001) and HOMA-IR (p < 0.001) score median values of PCOS patients were found to be significantly higher than the control group. CRP levels of PCOS patients receiving metformin treatment were found to be higher than both control and PCOS patients not receiving metformin treatment (p < 0.001). There was a significant difference between the groups in terms of PLR mean value (p = 0.031). The mean PLR value of PCOS patients, both those receiving metformin treatment and those not receiving treatment, was found to be significantly higher than the control group. In PCOS patients not receiving metformin treatment, there was a negative significant correlation between NLR and HDL level (r: −0.384; p: 0.036), NLR and insulin (r: 0.422; p: 0.020), and HOMA-IR score (r: 0.439; p: 0.015). There was a positive significant correlation between them. Conclusions: In the current study, PLR was significantly increased in all PCOS patients compared to controls. CRP levels in PCOS patients receiving metformin treatment were significantly higher than both control and untreated PCOS patients. PLR is positively associated with insulin and HOMA-IR scores in PCOS patients.