Publications by authors named "Gunay Can"

Immune related adverse events (irAEs) occur due to the inflammatory side effects of immune check point inhibitors (ICIs) and irAEs have been associated with improved efficacy in advanced non-small lung cancer (NSCLC) patients. Corticosteroids can reduce the efficacy of ICIs due to their immunosuppressive effects. In this study, we aimed to show the effects of the development of irAEs and the use of ≥ 10 mg prednisone and equivalent steroids on treatment response.

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Background: Acromegaly is a disease with high morbidity and mortality rates. The role of primary care physicians is very important in the early diagnosis of acromegaly. The present study aims to determine the knowledge and attitudes of primary care physicians about acromegaly in different countries worldwide.

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Background: Air pollution is one of the major environmental risk factors for health. Children are vulnerable to the negative health consequences of air pollution. We aimed to determine the effect of PM10 levels on postneonatal mortality in Istanbul, the most populous city in Türkiye.

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Background: Hyperprogressive disease (HPD) is a new phenomenon developing in the era of immune checkpoint inhibitor (ICI) therapy. HPD is characterized by an unexpected and fast progression in tumor volume and poor survival. There is no standardized definition for HPD and clinicopathological variables associated with HPD are unclear.

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To reveal factors affecting 2-year mortality in geriatric patients hospitalized with COVID-19. Demographic characteristics, clinical and laboratory data, thorax computed tomography (CT) images, second-year survival status, and causes of death were analyzed. The 2-year post-discharge mortality rate of 605 patients was 21.

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The study aimed to evaluate the effect of booster dose COVID-19 vaccines on prevention and humoral immune response in individuals with different vaccination schemes during the period BA.4 and BA.5 omicron sub-variants were globally dominant.

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Objective: To compare the functional (obstruction relieving) outcomes and complications of unilateral J-cut division, partial and subtotal vaginal removal techniques were performed for mesh-related urethral obstruction (MRUO) in females.

Methods: Patient review included demographics, a medical history and proforma with details of lower urinary tract symptoms (LUTS), physical and urodynamic findings, detailed surgical reports and follow-up data. Variables were compared between the three groups.

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Familial Mediterranean fever (FMF) is characterized by inflammatory attacks due to overactivation of pyrin inflammasome. This study aimed to investigate the reliability of S100A8/A9, neopterin, and matrix metalloproteinase 3 (MMP3) at monitoring subclinical inflammation and disease activity, and at differentiating FMF attacks from appendicitis, the most common misdiagnosis among FMF patients. Blood samples (n = 75), comprising from FMF patients during an attack (n = 20), the same FMF patients during the attack-free period (n = 14), patients with appendicitis (n = 24), and healthy volunteers (n = 17) were obtained.

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Objectives: This study compared the secukinumab treatment responses and adverse effects in psoriatic arthritis patients who received secukinumab as second-line with those that received secukinumab after two or more tumor necrosis factor-alpha (TNF-α) inhibitors.

Patients And Methods: The retrospective study included 68 psoriatic arthritis patients followed up between October 2018 and October 2021. The patients were divided into two groups according to their anti-TNF-α treatment history.

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In this study, we aimed to reveal the pro-inflammatory effects of serum 25-hydroxyvitamin D3 (Vit D) deficiency and insufficiency in new-onset type 2 diabetes mellitus (T2DM) and prediabetes. We recruited 84 prediabetes patients, 94 new-onset T2DM patients and 113 healthy participants. We measured the levels of C-reactive protein (CRP), fibrinogen, ferritin, interleukin-1β (IL-1β), interleukin-6 (IL-6), interleukin-8 (IL-8), tumor necrosis factor-α (TNF-α), nuclear factor kappa-B (NF-κB) and mitogen-activated protein kinase (MAPK) in the serum of the participants.

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Objectives: Impulse oscillometry (IOS) is a type of oscillation technique that measures the input impedance (Z) of the respiratory system and can be used to detect pathological changes in the small airways at an early stage. Although coronavirus disease 2019 (COVID-19) affects the vascular and parenchymal structures in the lung, chronic postinfection coughs also may be attributed to small airway pathologies. Our research aimed to use IOS for the assessment of the presence of small airway resistance (R) in patients who have had COVID-19.

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Objectives: Familial Mediterranean Fever (FMF) is the most common hereditary monogenic fever syndrome that is characterized by recurrent attacks of fever and polyserositis. Anti-inflammatory drugs, with colchicine being the first-line therapy, have been used in the management of FMF. This study aims to evaluate the risk of cancer in Turkish FMF patients.

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The evidence on the waning protection of COVID-19 vaccines has been reviewed by the World Health Organization and has led to consideration of the need for booster doses. This study aimed to evaluate vaccine effectiveness against COVID-19, and the COVID-19 infections among healthcare workers who received various types (inactive or m-RNA) and doses (2 to 4 doses) of the COVID-19 vaccine. The study was conducted with a total of 3,009 healthcare workers between August 1 and November 30, 2021 at a university hospital.

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Objective: The aim of this study is to investigate the immunization coverage for mandatory and specific vaccines in a group of children with chronic diseases.

Materials And Methods: Children with chronic diseases aged 6 months to 18 years who were followed up by outpatient subspecialty clinics of a tertiary hospital were enrolled. Children who were up-to-date and who were under-vaccinated were compared with respect to demographic characteristics, parental educational status, healthcare providers' attitudes toward vaccination, age at the time of diagnosis, and duration of follow-up.

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Background: Gut microbiotaplays a crucial role in immune response. Recent data have shown that antibiotic (ATB) usage influences efficacy of immune check point inhibitors (ICIs) via altering microbiota of the gut.

Methods: We retrospectively analyzed patients with advanced non-small cell lung cancer (NSCLC) treated with ICIs as monotherapy or combination with chemotherapy (ChT) at the one academic center.

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Real-life data are needed regarding the appropriate time and selection of vaccination strategies, homologous or heterologous. We aimed to compare neutralizing antibody levels and side effects in different vaccination schemes. The study included 310 Health Care Workers (HCWs) vaccinated with 5 different schemes.

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Article Synopsis
  • Physician immigration to developed countries is on the rise, but the reasons behind Turkish physicians' migration are still not well understood.
  • A study of 9,881 senior medical students in Türkiye showed that 70.7% intend to emigrate, with about 60% wanting to stay abroad permanently.
  • The main factors influencing their decisions include poor working conditions in Türkiye and a desirable social environment abroad, along with concerns about medical school quality significantly impacting their emigration intentions.
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Background: In this study, we aimed to investigate different types of celiac antibodies in psoriasis patients and to see if the presenceof the antibodies was associated with other variables.

Methods: We included patients with plaque psoriasis who were followed up in our dermatology clinic between February 2019 and February 2021 and added a healthy control group for comparison. The antibodies studied were serum antitissue transglutaminase (tTG)-IgA, tTG-IgG, antigliadin antibody (AGA)-IgA, and AGA-IgG.

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Objective: The association of treatment-related side effects and tumor characteristics with sexual function, depression, and anxiety were investigated in patients with locally advanced rectum cancer (LARC) receiving neoadjuvant chemoradiotherapy (CRT).

Material And Methods: Thirty-two patients who received neoadjuvant CRT with LARC were included. The Arizona Sexual Experiences (ASEX) Scale was used to determine the sexual function status whereas the Beck Depression Inventory (BDI) and the Beck Anxiety Inventory (BAI) were used to evaluate the depression and anxiety status of the patient, respectively.

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Aim: Sarcopenia and obesity can cause severe physical and metabolic complications. We aimed to investigate the risk of mortality associated with sarcopenia and obesity in older adults.

Method: We designed a retrospective, observational cohort study showing the 5-year mortality of older patients in a tertiary geriatric outpatient clinic.

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Purpose: To investigate salvage treatment approaches and treatment outcomes in high-risk prostate cancer after radical prostatectomy (RP).

Methods: In this retrospective, multicenter study, 272 patients who underwent salvage radiotherapy (RT) ± androgen deprivation therapy (ADT) for recurrent prostate cancer after RP between 2007 and 2021 were analysed. Univariate analyses of time to biochemical and clinical relapse after salvage therapies were conducted using Kaplan-Meier plots and log-rank tests.

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The anti-inflammatory adipokine intelectin-1, which is encoded by the ITLN1 gene, is hypothesized to be linked to the pathogenesis of type 2 diabetes (T2DM) and obesity. The purpose of this study was to examine the effect of the ITLN1 gene polymorphism rs2274907 on obesity and T2DM in Turkish adults. The impact of genotype on lipid profiles and serum intelectin levels in the obese and diabetes groups was also investigated.

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Aim: This study aimed to show the effectiveness of interleukin (IL)-23 inhibitors in psoriatic arthritis (PsA) at weeks 12 and 24 in a real-world setting.

Materials And Methods: Forty-three patients with active PsA were enrolled in this study. These patients were treated with either guselkumab (n = 20) or risankizumab (n = 23).

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