İstanbul Kent Üniversitesi Research and Academic Performance System
DSpace@Kent is an integrated information system that unifies the monitoring, analysis and reporting of scientific research and academic performance at İstanbul Kent University.
Recent Submissions
Item type:Item, The effects of melatonin on the striatum(Marmara University, 2021) Gergin, Sinem; Kirazlı, Özlem; Boracı, Hatice; Yıldız, Sercan Doğukan; Şehirli, Ümit SüleymanObjective: Some of the neurological diseases cause morphologic changes in the striatal neurons. Medial forebrain bundle (MFB) lesion is a commonly used method to produce a Parkinsonian model rat. Melatonin is a hormone which exerts a neuroprotective effect on the neurons. The aim of this study is to investigate the effect of melatonin on the dendritic morphology of striatal medium spiny neurons (MSNs) in rats with MFB lesion. Materials and Methods: Twelve male Wistar albino rats were given saline injections into the MFB and divided into sedentary and treatment groups. The treatment group was administered a 10 mg/kg dose of melatonin intraperitoneally for 30 days. The lesion was confirmed histologically by Nissl staining. Golgi staining technique was applied to observe neuronal morphology. Neuronal structures were analysed from three-dimensional images by Neurolucida (MBF Bioscience) software. Results: The MFB lesion caused a reduction in the total dendritic length and in the number of dendritic endings. The melatonin enhanced the number of dendritic endings compared to the sedentary group. The melatonin led to an increase in the total spine density, spine densities of thin and mushroom types. Conclusion: Melatonin improved the dendritic degeneration due to MFB lesion.Item type:Item, An analysis of factors affecting perceived access to healthcare services: The case of Istanbul(Xdizayn, 2026) Cihaner, Perihan; Demir, BülentPurpose: The main purpose of this study is to reveal that access to health services is not limited to physical proxim ity. In particular, it aims to examine the individual, economic, technological, and structural factors that affect individuals' perception of access to health services within a multidimen sional framework. It also aims to develop policy recommenda tions in this direction. Scope: The research covers individuals living in the districts of Bakırköy, Başakşehir, Küçükçekmece, and Ümraniye in Istan bul. The study comparatively examines the perceptions of ac cess to healthcare services among individuals living in districts with different socioeconomic characteristics. Method: A quantitative research method was used in the study. Data were collected from individuals forming the sample group using the "Perceived Access to Health Care Questionnaire". The scale consists of four sub-dimensions: accessibility, availability, suitability, and acceptability. The data obtained were evaluated using statistical analysis methods. Findings: According to the research findings, it was deter mined that participants had the highest perception regarding the accessibility dimension of health services. On the other hand, serious problems were identified in the reachability di mension. In particular, physical transportation difficulties to Çam and Sakura City Hospital in Başakşehir district negatively affected individuals' perception of reachability. Furthermore, the high economic burden of healthcare services and the fail ure of public healthcare institutions to meet expectations in terms of capacity and service quality constitute a problem. This situation has significantly reduced the satisfaction level of participants. It was found that individuals with low socioeco nomic status had a weaker perception of access to healthcare services. Again, this situation demonstrated the persistence of inequalities in the healthcare field. While individuals with access to technological tools were found to have a higher per ception of access, those unable to benefit from digital opportu nities were found to have a low perception of access. Conclusion: This study reveals that trust in the healthcare sys tem in Türkiye, perceived service quality, and healthcare poli cies are shaped by individuals' daily experiences. The findings indicate that access to healthcare services needs to be re-ex amined with an equitable, sustainable, and inclusive approach. In particular, the development of policies aimed at improving accessibility, affordability, and reducing digital inequalities is a fundamental requirement for the Turkish healthcare system.Item type:Item, The role of neuro-leadership in the neuro-decision-making process: A bibliometric analysis from a neuro-management perspective(Necmettin Gül, 2026) Uğurlu Kara, Arzu; Demir, Bülent; Candemir, Emirhan; Karakaş, HilalThis study aims to examine the academic literature that has developed at the intersection of the disciplines of neuro-management, neuro-leadership, and neuro-decision-making from a systematic perspective. Designed using a bibliometric analysis methodology, the research seeks to map the theoretical landscape of the “brain-based” approach, which has gained momentum in management sciences in recent years. Within this scope, bibliographic data obtained from the Web of Science database were subjected to co-authorship, keyword co-occurrence, and citation analyses and visualized using the VOSviewer software. The analysis results reveal that the neuro-management literature has exhibited a marked growth, particularly after 2010, and that interdisciplinary interaction networks have strengthened. Keyword clustering confirms that leadership behaviors are shaped not only by rational choices but also by emotional and social cognitive neural mechanisms. Co-authorship networks indicate that specific academic core groups and strategic collaborations play a decisive role in the development of the field. Citation analyses demonstrate that fundamental theories such as the Somatic Marker Hypothesis and Cognitive Biases constitute the theoretical backbone of the field. In conclusion, while concretizing the neuroscientific transformation in the management literature through bibliometric indicators, the study outlines a theoretical and empirical roadmap for future research through the identified gaps in the literature.Item type:Item, Green transformation in management: A bibliometric analysis on green leadership and sustainability(Nurhan Koçan, 2026) Uğurlu Kara, Arzu; Demir, Bülent; Karakaş, Hilal; Candemir, EmirhanThis study provides a systematic examination of the concepts of green leadership and sustainability, which represent two key pillars of green transformation in management, by employing a bibliometric approach. A dataset consisting of 469 publications obtained from the Web of Science (WoS) database was analyzed using VOSviewer, including co-authorship, citation, and keyword co-occurrence analyses. The results show a notable increase in publication activity, particularly after 2020. Concepts such as sustainability, ethical leadership, and responsible leadership appear as central themes within the literature. In addition, the findings suggest that authors with the highest citation counts are not always located at the core of collaboration networks, indicating different structural patterns within the research field. From the perspective of the Resource-Based View, green leadership can be interpreted as a strategic organizational capability that supports the development of competitive advantage. Overall, the study indicates that research on green leadership and sustainability has become increasingly interdisciplinary and has experienced considerable growth in recent years.Item type:Item, Structural inequality exhaustion theory: A transdisciplinary framework linking socioeconomic strain to bidirectional exhaustion(Fatih Deyneli, 2026) Aksoy, Fikret; Gök, FatihSocioeconomic inequality is a primary determinant of global health disparities, yet the mechanistic pathways linking structural strain to individual exhaustion remain poorly defined. Current models seldom bridge the gap between macro-level socioeconomic indicators and micro-level biological mediators. This study introduces the Structural Inequality Exhaustion Theory (SIET) as a unified, bidirectional framework for understanding systemic depletion across social strata. Using a transdisciplinary theoretical synthesis, this research integrates empirical evidence from neuroscience, psychobiology, and behavioral economics; model development followed a systematic approach addressing five primary literature gaps, and the framework is applied to an exploratory cross-national analysis using publicly available OECD and World Bank indicators (PROSPERO CRD420251249096). SIET formulates a bidirectional exhaustion model comprising Socioeconomic Exhaustion (SE) and Psychosocial Exhaustion (PE), introduces the Structural Exhaustion Index (SEI) to quantify cumulative pressures, and proposes a testable behavioural function. An exploratory cross-national application shows that a SEI proxy is strongly and inversely associated with population life expectancy (r = −0.74, p < 0.01). SIET advances public-health and economic theory by providing a mechanistic bridge between structural inequality and health outcomes, offering a foundation for targeted, exhaustion-sensitive policy design.
