Gökhan Özgen

ORCID: 0000-0003-0533-3122
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About
Contact & Profiles
Research Areas
  • Thyroid Cancer Diagnosis and Treatment
  • Thyroid Disorders and Treatments
  • Pituitary Gland Disorders and Treatments
  • Hormonal Regulation and Hypertension
  • Adrenal and Paraganglionic Tumors
  • Ovarian function and disorders
  • Growth Hormone and Insulin-like Growth Factors
  • Head and Neck Anomalies
  • Adipokines, Inflammation, and Metabolic Diseases
  • Diabetes, Cardiovascular Risks, and Lipoproteins
  • Neuroendocrine Tumor Research Advances
  • Adipose Tissue and Metabolism
  • Diet and metabolism studies
  • Cancer, Hypoxia, and Metabolism
  • Diabetes and associated disorders
  • Diabetes Management and Research
  • Bariatric Surgery and Outcomes
  • Pancreatic function and diabetes
  • Thyroid and Parathyroid Surgery
  • Adrenal Hormones and Disorders
  • Sexual Differentiation and Disorders
  • Reproductive Biology and Fertility
  • Pharmacology and Obesity Treatment
  • Hormonal and reproductive studies
  • Nutritional Studies and Diet

Ege University
2015-2024

Izmir University
1999-2022

Ege Üniversitesi Tıp Fakültesi Hastanesi
2008-2017

Gazi University
2013

Endocrinology Research Center
2007

Ankara University
2000

University Medical Center
1998

Several health-promoting effects of kefir have been suggested, however, there is limited evidence for its potential effect on gut microbiota in metabolic syndrome This study aimed to investigate the regular consumption composition, and their relation with components syndrome. In a parallel-group, randomized, controlled clinical trial setting, patients were randomized receive 180 mL/day (n = 12) or unfermented milk 10) 12 weeks. Anthropometrical measurements, blood samples, pressure fecal...

10.3390/nu11092089 article EN Nutrients 2019-09-04

The aims of the study were to identify medullary thyroid cancer (MTC) in its earliest stages by screening patients with basal calcitonin measurements and determine whether serum should be a part routine evaluation nodular goiter. Basal levels obtained from 75 (female:male 57:18, mean age 42.8 years, range 18-76 years) nonnodular disease as controls. Their level was 7.8+/-0.4 pg/mL 5-27 pg/mL. Seven hundred seventy-three goiter included 586:187) 46.1 years (range 17-78). Four had elevated...

10.1089/thy.1999.9.579 article EN Thyroid 1999-06-01

We hypothesized that the administration of rosiglitazone, an insulin-sensitizing agent thiazolidinedione class, would improve ovulatory dysfunction, hirsutism, hyperandrogenemia, and hyperinsulinemia polycystic ovary syndrome (PCOS) patients. Forty women with PCOS impaired glucose tolerance test (IGT) were randomly assigned to 8-month treatment rosiglitazone at either 2 mg/day or 4 mg/day. compared changes in function, hormonal levels (total free testosterone, estradiol, estrone,...

10.1507/endocrj.52.299 article EN Endocrine Journal 2005-01-01

The purpose of this study was to determine whether polycystic ovary syndrome (PCOS) and nonclassic 21-hydroxylase deficiency (CAH) are related hyperhomocysteinemia, investigate if there is a correlation between homocysteine levels insulin sensitivity in women with PCOS CAH. Fifty patients PCOS, 50 CAH 25 control were included the study. Blood samplings performed early follicular phase for measuring hormone profile, Vitamin B(12), folate, fasting blood glucose. Ovulatory status assessed timed...

10.1507/endocrj.51.601 article EN Endocrine Journal 2004-01-01

Platelet dysfunction and its association with insulin resistance and/or hyperandrogenemia were evaluated in 50 women polycystic ovary syndrome (PCOS), non-classic congenital adrenal hyperplasia (NC-CAH), 30 the control group. Agonist-induced platelet aggregation was measured. Women PCOS had significantly higher levels of aggregations induced by ADP (77.4 +/- 3.3 vs. 67.3 2.8), collagen (79.7 1.8 69.1 3.9), epinephrine (84.7 2.6 67.8 3.8), compared controls. However NC-CAH because (68.2...

10.1210/jc.2002-021391 article EN The Journal of Clinical Endocrinology & Metabolism 2003-05-01

Interleukin (IL)-10 is a major anti-inflammatory cytokine that plays crucial role in the regulation of immune system. IL-10 has met criteria for an and immunosuppressive cytokine, its activity may be important clinical outcome diabetic nephropathy (DN). We aimed at evaluating relation between genotypic allelic frequencies (-1082G/A) polymorphisms, their association with risk to develop DN Turkish population.The genotypes were retrospectively determined 43 patients 48 without control group...

10.1089/gtmb.2011.0075 article EN Genetic Testing and Molecular Biomarkers 2011-08-23

Purpose In this study, we aimed to assess the effectiveness of malignancy stratification algorithms American College Radiology (ACR) and European Thyroid Association (ETA) in delineation thyroid nodules using a database that were unequivocally diagnosed by means histopathological examination meticulously matched with imaged nodules. Methods A total 165 patients having 251 histopathologically proven definitive diagnoses during 5-year period included study. All had preoperatively undergone...

10.5152/dir.2021.20813 article EN Diagnostic and Interventional Radiology 2021-04-08

Poor glycaemic control, hypertension and duration of diabetes are risk factors for the development diabetic nephropathy, but there may be genetic factors. Recently, a common C to T mutation at nucleotide position 677 MTHFR gene (MTHFR677C > T) has been reported correlated with hyperhomocysteinemia severity coronary artery disease as macroangiopathy. We aim investigate Turkish type 2 patients with/without nephropathy healthy group examine contribution polymorphism nephropathy.DNA was...

10.1002/dmrr.735 article EN Diabetes/Metabolism Research and Reviews 2007-03-12

Oxidative stress is regarded as a pathogenic factor in hyperthyroidism. Our purpose was to determine the relationship between oxidative and inflammatory cytokines investigate how melatonin affects damage cytokine response thyrotoxic rats. Twenty-one rats were divided into three groups. Group A served negative controls. B had untreated thyrotoxicosis, C received melatonin. Serum malondialdehyde (MDA), glutathione (GSH), reductase (GR), peroxidase (GPx), nitric oxide derivates (NO*x), plasma...

10.1155/2009/391682 article EN cc-by Mediators of Inflammation 2009-01-01

Several studies have shown increased oxidative stress in patients with pre-diabetes and newly diagnosed Type 2 diabetes mellitus (T2DM). It has been proposed that initiates insulin resistance genetically predisposed individuals. The aim of this study was to evaluate the markers offspring T2DM.We examined 60 lean normoglycemic diabetics, 52 age, sex body mass index matched subjects without family history T2DM as controls. Anthropometric, biochemical carotid intima media thickness (IMT)...

10.1055/s-0031-1275289 article EN Experimental and Clinical Endocrinology & Diabetes 2011-04-06

We aimed to compare the ultrasonographic and laboratory parameters of euthyroid patients who have only positive antithyroid autoantibody test results with those a hypothyroid status Hashimoto's thyroiditis (HT).Thirty-five newly diagnosed HT, 35 autoantibodies against thyroid peroxidase (TPOAb) and/or thyroglobulin (TgAb), 40 controls were enrolled in study. Plasma free T3, T4, stimulating hormone, TPOAb, TgAb levels obtained retrospectively. For gray-scale ultrasonography, each gland all...

10.5152/dir.2013.041 article EN Diagnostic and Interventional Radiology 2013-01-17

Obesity, insulin resistance and hyperandrogenism, crucial parameters of Polycystic ovary syndrome (PCOS) play significant pathophysiological roles in lipidemic aberrations associated within the syndrome. Parts metabolic (low HDL resistance) appeared to facilitate association between PCOS coronary artery disease, independently obesity. ABCA1 gene polymorphism may be altered this components patients.In study, we studied 98 patients 93 healthy controls. All subjects underwent venous blood...

10.1186/1476-511x-10-193 article EN cc-by Lipids in Health and Disease 2011-01-01
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