Guldal Inal Gultekin

Prof. Dr. Guldal Inal Gultekin

orcid

Research Focus & Metrics

Academic Career Length

5Years (2022-Present)

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

Representative Publications

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8 August 2022 in Genes
Verified
Journal Article
Open access
PDF file
HKHabil Kalkan
Habil Kalkan
ÜAÜMIT MURAT AKKAYA
ÜMIT MURAT AKKAYA
Guldal Inal GultekinGuldal Inal Gultekin
Guldal Inal Gultekin
Ana María Sánchez-PérezAna María Sánchez-Pérez
Ana María Sánchez-Pérez
Early intervention can delay the progress of Alzheimer’s Disease (AD), but currently, there are no effective prediction tools. The goal of this study is to generate a reliable artificial intelligence (AI) model capable of detecting the high risk of AD, based on gene expression arrays from blood samples. To that end, a novel image-formation method is proposed to transform single-dimension gene expressions into a discriminative 2-dimensional (2D) image to use convolutional neural networks (CNNs) for classification. Three publicly available datasets were pooled, and a total of 11,618 common genes’ expression values were obtained. The genes were then categorized for their discriminating power using the Fisher distance (AD vs. control (CTL)) and mapped to a 2D image by linear discriminant analysis (LDA). Then, a six-layer CNN model with 292,493 parameters were used for classification. An accuracy of 0.842 and an area under curve (AUC) of 0.875 were achieved for the AD vs. CTL classification. The proposed method obtained higher accuracy and AUC compared with other reported methods. The conversion to 2D in CNN offers a unique advantage for improving accuracy and can be easily transferred to the clinic to drastically improve AD (or any disease) early detection.

25 March 2022 in Frontiers in Pharmacology
Verified
Journal Article
Open access
Guldal Inal GultekinGuldal Inal Gultekin
Guldal Inal Gultekin
ZGZeliha GÖRMEZ
Zeliha GÖRMEZ
NMNaside Mangir
Naside Mangir
Bladder pain syndrome/interstitial cystitis (BPS/IC) is a debilitating pain syndrome of unknown etiology that predominantly affects females. Clinically, BPS/IC presents in a wide spectrum where all patients report severe bladder pain together with one or more urinary tract symptoms. On bladder examination, some have normal-appearing bladders on cystoscopy, whereas others may have severely inflamed bladder walls with easily bleeding areas (glomerulations) and ulcerations (Hunner’s lesion). Thus, the reported prevalence of BPS/IC is also highly variable, between 0.06% and 30%. Nevertheless, it is rightly defined as a rare disease (ORPHA:37202). The aetiopathogenesis of BPS/IC remains largely unknown. Current treatment is mainly symptomatic and palliative, which certainly adds to the suffering of patients. BPS/IC is known to have a genetic component. However, the genes responsible are not defined yet. In addition to traditional genetic approaches, novel research methodologies involving bioinformatics are evaluated to elucidate the genetic basis of BPS/IC. This article aims to review the current evidence on the genetic basis of BPS/IC to determine the most promising targets for possible novel treatments.

3 March 2026 in Journal of the Turkish-German Gynecological Association
Verified
Journal Article
Open access
PDF file
OTOzlem Timirci-Kahraman
Ozlem Timirci-Kahraman
Guldal Inal GultekinGuldal Inal Gultekin
Guldal Inal Gultekin
DBDeryanaz Billur
Deryanaz Billur
EÜEsin Bayralı Ülker
Esin Bayralı Ülker
MIMurat İşBilen
Murat İşBilen
TITurgay Isbir
Turgay Isbir
A bioinformatics approach to identify potential biomarkers of high-grade ovarian cancer - Journal of the Turkish-German Gynecological Association

22 July 2024 in Continence
Verified
Journal Article
Open access
Guldal Inal GultekinGuldal Inal Gultekin
Guldal Inal Gultekin
DJDick Janssen
Dick Janssen
NMNaside Mangir
Naside Mangir
FCFrancisco Cruz
Francisco Cruz
ACAna Charrua
Ana Charrua

19 December 2022 in Journal of the Egyptian National Cancer Institute
Verified
Journal Article
Open access
PDF file
Guldal Inal GultekinGuldal Inal Gultekin
Guldal Inal Gultekin
ÖKÖzlem Timirci Kahraman
Özlem Timirci Kahraman
MIMurat Işbilen
Murat Işbilen
SDSaliha Durmuş
Saliha Durmuş
TÇTunahan Çakir
Tunahan Çakir
TITurgay Isbir
Turgay Isbir
Background: The bladder cancer (BC) pathology is caused by both exogenous environmental and endogenous molecular factors. Several genes have been implicated, but the molecular pathogenesis of BC and its subtypes remains debatable. The bioinformatic analysis evaluates high numbers of proteins in a single study, increasing the opportunity to identify possible biomarkers for disorders. Methods: The aim of this study is to identify biomarkers for the identification of BC using several bioinformatic analytical tools and methods. BC and normal samples were compared for each probeset with T test in GSE13507 and GSE37817 datasets, and statistical probesets were verified with GSE52519 and E-MTAB-1940 datasets. Differential gene expression, hierarchical clustering, gene ontology enrichment analysis, and heuristic online phenotype prediction algorithm methods were utilized. Statistically significant proteins were assessed in the Human Protein Atlas database. GSE13507 (6271 probesets) and GSE37817 (3267 probesets) data were significant after the extraction of probesets without gene annotation information. Common probesets in both datasets (2888) were further narrowed by analyzing the first 100 upregulated and downregulated probesets in BC samples. Results: Among the total 400 probesets, 68 were significant for both datasets with similar fold-change values (Pearson r: 0.995). Protein-protein interaction networks demonstrated strong interactions between CCNB1, BUB1B, and AURKB. The HPA database revealed similar protein expression levels for CKAP2L, AURKB, APIP, and LGALS3 both for BC and control samples. Conclusion: This study disclosed six candidate biomarkers for the early diagnosis of BC. It is suggested that these candidate proteins be investigated in a wet lab to identify their functions in BC pathology and possible treatment approaches.

25 April 2025 in Türk Fizyoterapi ve Rehabilitasyon Dergisi
Verified
Journal Article
Open access
PDF file
SKSefa Kılıç
Sefa Kılıç
KAKubra Alpay
Kubra Alpay
EAEmine Atıcı
Emine Atıcı
MSMehmet Soyal
Mehmet Soyal
Guldal Inal GultekinGuldal Inal Gultekin
Guldal Inal Gultekin
Purpose: Muscle fatigue is known to alter the proprioceptive system, the central proprioception process, and power generation capacity. This study aims to determine the effect of anaerobic fatigue on lower-extremity proprioception in adolescent female basketball players. Methods: The study included licensed female basketball players (n=30) between the ages of 12 and 16. Their dominant lower extremities were evaluated for knee joint position-sense measurements. Active and passive knee joint position senses were measured with an isokinetic dynamometer at 30° and 60° degrees prior to, immediately after anaerobic fatigue, and finally after 10 minutes of the recovery period. The Wingate Anaerobic Strength Test was used to induce anaerobic fatigue. We documented the knee joint position sense of each participant. Results: Following a 30-second anaerobic fatigue, a significant reduction in the sense of active joint perception at 30° and 60° knee flexion was observed compared to baseline values (p> 0.017). The knee joint's proprioception at 30° and 60° flexion returned to baseline levels after a 10-minute recovery from fatigue. The passive joint perception did not show any statistical changes. Conclusion: Anaerobic fatigue reduces knee proprioception in adolescent female basketball players. Moreover, proprioceptive sensitivity can return to baseline levels with a recovery time of as little as 10 minutes.