Publications by authors named "Senay Topsakal"

Objective: In this retrospective study, we aimed to investigate the clinical, hormonal, and radiological characteristics of patients with adrenal incidentalomas (AIs), to assess the prevalence of metabolic syndrome components in patients with AIs, and to determine whether changes in tumor size or hormonal activity occur during long-term follow-up in patients with AIs.

Methods:  We retrospectively analyzed data from 384 patients diagnosed with AI between 2010 and 2020. Data regarding radiological, hormonal, and metabolic investigations in diagnosis and also during follow-ups were collected.

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  • The study aimed to compare various clinical and hormonal characteristics, treatment methods, and survival outcomes of ectopic Cushing's syndrome (ECS) between male and female patients.
  • Data was collected from 11 medical centers, evaluating 54 patients (28 females and 26 males), and found similarities in age, clinical presentation, and hormone levels despite some differences like higher rates of diabetes and osteoporosis in males.
  • Overall, the results showed comparable disease progression, treatment responses, and remission rates between sexes, but indicated that males experience more severe conditions such as hyperglycemia and osteoporosis.
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  • Dapagliflozin (DPG) is an SGLT2 inhibitor suggested to have anti-inflammatory effects, and this study aimed to assess its ability to protect against damage in the female genital system caused by lipopolysaccharide (LPS).
  • In an experiment with 32 female Wistar Albino rats, the research involved different groups treated with control, LPS, LPS + DPG, and DPG alone, with subsequent analysis of their ovary, fallopian tubes, and uterus tissues.
  • Results showed that LPS led to significant tissue damage and increased oxidative stress, but DPG treatment effectively prevented these harmful changes, suggesting its potential as a protective agent in the female reproductive system.
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  • The study explores the combined effects of metformin (MET) and physical exercise (EXE) on diabetes mellitus type 2 (DM-2) in rats, focusing on inflammation, apoptosis, and nesfatin-1 synthesis.
  • Twenty-seven male Wistar Albino rats were divided into four groups and subjected to a high-fat diet or treatments over three months, with various health markers measured at the study's end.
  • Findings showed that MET and EXE significantly improved glucose and lipid profiles while reducing inflammation and apoptosis markers, indicating their effectiveness in mitigating damage in DM-2.
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Lipopolysaccharides (LPSs) are a component of certain types of bacteria and can induce an inflammatory response in the body, including in the pancreas. Cannabidiol (CBD), a nonpsychoactive compound found in cannabis, has been shown to have anti-inflammatory effects and may offer potential therapeutic benefits for conditions involving inflammation and damage. The aim of this study was to investigate any potential preventative effects of CBD on experimental LPS-induced pancreatic pathology in rats.

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The effect of stress on the occurrence of diabetes mellitus (DM) is commonly reported in recent studies. Maternal stress may have a negative effect on the later life of offspring. However, most studies only investigated long-term intrauterine stress on behavioral, emotional, psychological, and immunological disorders of offspring.

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Background: The effects of adipokines have been investigated in multiple sclerosis (MS) in the literature. Results are uncertain, and subgroups like adropin have not been previously studied. We primarily aimed to determine leptin and adropin levels in MS and their potential use as a biomarker.

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We investigated the therapeutic potential of taxifolin for treatment of alveolar bone loss (ABL) in experimental periodontitis in diabetic rats. Diabetes mellitus (DM) was induced by streptozotocin. Rats were divided into six groups: untreated control; DM only (D) group; ligature only (P) group; DM + ligature (DP) group; DM + ligature + 5 mg/kg/day taxifolin (Taxi-5) group; DM + ligature + 10 mg/kg/day taxifolin (Taxi-10) group.

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Osteocalcin (OC) is inversely related to body fat distribution and fasting glucose levels. We sought to observe the effect of OC on fat distribution and subclinical atherosclerosis as measured by carotid intima-media thickness (CIMT) in premenopausal obese women. In this prospective observational study, totally, 73 premenopausal obese women (aged 17-55 years) and 53 healthy women (aged 20-50 years) with normal weight were included as controls.

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Objectives: To describe biochemical and clinical features, and therapeutic outcomes of acromegaly patients in Turkey.

Methods: Retrospective multicenter epidemiological study of 547 patients followed in 10 centers of the Turkish Acromegaly registry.

Results: A total of 547 acromegaly patients (55% female) with a median age of 41 was included in this study.

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The aim of this study was to examine pancreatic lesions and the possible prophylactic effects of agomelatine (AGO) in lipopolysaccharide (LPS)-induced sepsis in rats. Twenty-four female, 1-year-old Wistar albino rats were divided into three groups: group I (control), group II (study group; 5 mg/kg LPS i.p.

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Objective: The aim of this study was to examine pancreatic pathology and the prophylactic effects of pregabalin in lipopolysaccharide (LPS) induced sepsis model in aged rats.

Methods: Twenty-four female, one-year-old, Wistar Albino rats were assigned to three groups; Group I (control), Group II (study group: 5mg/kg LPS intraperitoneal, single dose) and Group III(treatment group: 5mg/kg LPS+30 mg/kg oral pregabalin one hour before LPS). Animals were sacrificed by exsanguination 6 hours after LPS administration.

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Background: Diabetes mellitus become an epidemic problem throughout the world. Relation of the diabetes with diet is known. Some evidence is reported about mother died and risk of diabetes in babies during the life related with gestational diabetes.

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Background: Acromegaly is a rare and serious syndrome that is commonly associated with pituitary neoplasms. Thyroid multinodular disease is a common finding in acromegaly. Leptin is a polypeptide hormone, and studies have shown that it can increase cell proliferation and inhibit apoptosis.

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In this study, the diabetogenic effects of long term Ochratoxin A (OTA) administration in rats were investigated, and its role in the etiology of diabetes mellitus (DM) was examined utilizing 42 female Wistar rats for these purposes. The rats were divided into three different study and control groups according to the duration of the OTA administration. The rats received 45 μg OTA daily in their feed for 6, 9 and 24 weeks, respectively.

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Background: Adiponectin is an adipocytes-derived hormone which has been shown to possess insulin-sensitizing, antiatherogenic, and anti-inflammatory properties. In acromegaly, the data on adiponectin is contradictory. The relationship between adiponectin levels and cardiac parameters has not been studied.

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Background: Acromegaly is associated with increased morbidity and mortality related to cardiovascular diseases. Leptin (LEP) and Leptin Receptor (LEPR) gene polymorphisms can increase cardiovascular risks. The aim of this study was to investigate association between the frequencies of LEP and LEPR gene polymorphisms and subclinical atherosclerosis in acromegalic patients.

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Objective: To determine the relationship between central adiposity parameters and autonomic nervous system (ANS) dysfunction.

Subjects And Methods: The study included 114 obese individuals without any cardiovascular risk factors. Weight (in kg), height (in m), and waist circumference (WC; in cm) were measured and body mass index was calculated.

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Objectives: Chronic consumption of high-fructose corn syrup (HFCS) causes several problems such as insulin resistance. The goal of the study was to investigate pancreatic damage induced by chronic HFCS consumption and the protective effects of alpha lipoic acid (ALA) on pancreatic cells.

Methods: Wistar Albino, 4-month-old, female rats weighing 250-300 g were randomly distributed into three groups, each containing eight rats.

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Article Synopsis
  • Recent studies highlight the rise of pancreatic disorders, with smoking identified as a potential risk factor, though the specific mechanisms remain unclear.
  • This research involved 28 female rats divided into three groups to assess the effects of cigarette smoke exposure and the protective role of Alpha Lipoic Acid (ALA) on pancreatic damage.
  • Results showed that cigarette smoke exposure increased serum amylase and glucose levels while decreasing insulin, suggesting damage to both endocrine and exocrine functions of the pancreas.
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Objective: The aim of this study was to investigate the protective effects of aspirin (AS) and vitamin C (VC) against cardiac damage induced by chronic corn syrup (CS) consumption via a mechanism involving sirtuin-1 (ST-1), hypoxia-inducible factor-1α (HIF-1α), and the caspase-3 pathway in rats.

Methods: Forty male Sprague-Dawley rats (14-16 weeks) that weighed 250-300 g were randomly distributed into 5 groups, each containing 8 rats: control group, CS+AS group, CS+VC group, CS+AS+VC group, and CS group. AS (10 mg/kg/day) and VC (200 mg/kg/day) were orally given to the rats.

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Objectives: Diabetes mellitus (DM) is a global epidemic with increasing prevalence. The disease is chronic in nature, and patients must use antidiabetic drugs or insulin during their lifespan. Because of the difficulty of using injectable insulin preparations, patients and practitioners prefer to use oral antidiabetic drugs for prophylaxis and treatment.

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Purpose: Obesity is well known to be linked to higher morbidity and mortality. Elevated plasma levels of free dehydroepiandrosterone (DHEA) are associated with reduced obesity and more limited accumulation of abdominal body fat. In contrast, the relationship between the DHEA sulfate ester (DHEAS) and adiposity is inconsistent and contradictory.

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Aim: To assess the association between serum lipids and diabetic retinopathy (DR).

Methods: Sixty-one diabetic patients without retinopathy(NDR), 55 diabetic patients with non-proliferative retinopathy(NPDR) and 75 diabetic patients with proliferative retinopathy (PDR) according to ETDRS grading scale were enrolled in this study. Total cholesterol, high density lipoprotein (HDL), low density lipoprotein (LDL), very low density lipoprotein (VLDL) and triglyceride values were compared between the groups.

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Purpose: To find out how resistin and leptin levels were affected in patients with acromegaly and whether there is a relation between resistin levels and cardiac parameters. We also aimed to investigate whether resistin and leptin may be a link between insulin resistance and cardiac functions as well as these affected cardiac functions in the patients with acromegaly.

Methods: We included 30 subjects (15 men and 15 women) who had a diagnosis of acromegaly and 30 healthy (10 men and 20 women) subjects.

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