Ali Karataş

Dr. Ali Karataş

orcid

Research Focus & Metrics

Academic Career Length

6Years (2021-Present)

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

Representative Publications

View All Publications
18 October 2021 in eClinicalMedicine
Verified
Journal Article
Open access
Lynne V. McFarlandLynne V. McFarland
Lynne V. McFarland
TKTarkan Karakan
Tarkan Karakan
AKAli Karataş
Ali Karataş
Consistent guidance for choosing an appropriate probiotic for the treatment of irritable bowel syndrome is lacking. Literature databases searched included: PubMed, Google Scholar and NIH registry of clinical trials from inception to June 2021. Inclusion criteria: randomized controlled trials (RCTs) enrolling adult or pediatric IBS patients comparing probiotics against controls and ≥ 2 RCTs with common IBS outcome measures within each type of probiotic. Five common measures of IBS symptoms (changes in global Irritable Bowel Syndrome Severity Scoring System or IBS-SSS scores, frequency of global responders, changes in bloating or abdominal pain scores and frequency of abdominal pain relief) were used. This study was registered at Prospero (#CRD42018109169). We screened 521 studies and included 42 randomized controlled trials (45 treatment arms, N = 3856). Four probiotics demonstrated significant reduction in abdominal pain relief: B. coagulans MTCC5260 (RR= 4.9, 95% C.I. 3.3, 7.3), L. plantarum 299v (RR= 4.6, 95% CI 1.9, 11.0), S. boulardii CNCM I-745 (RR= 1.5, 95% C.I. 1.1, 2.1) and S. cerevisiae CNCM I-3856 (RR= 1.3, 95% C.I. 1.04, 1.6). Mild-moderate adverse events were reported in 51% of the trials, none were more associated with the probiotic compared to controls. Although the analysis of probiotic efficacy was limited by the diversity of IBS outcomes used in trials and lack of confirmatory trials for some strains, six single-strain probiotics and three different types of probiotic mixtures showed significant efficacy for at least one IBS outcome measure. These results might be relevant to clinical practice and policy.

20 October 2023 in Medicine
Verified
Journal Article
Open access
NBNergis Basmaci
Nergis Basmaci
AKAli Karataş
Ali Karataş
MEMustafa Ergin
Mustafa Ergin
GDGiyaseddin Şükrü Dumlu
Giyaseddin Şükrü Dumlu
It was aimed to investigate whether the Helicobacter pylori infection is related to the frequency, localization, size and number of colorectal polyps. The data of 4561 patients who underwent esophagogastroduodenoscopy and colonoscopy were analyzed retrospectively. Patients with and without polyps at colonoscopy were grouped and the frequency of H pylori infection was compared in these patients. The relationship between the groups was evaluated with statistical methods. It was determined that the rate of H pylori infection was higher in patients with colorectal polyps than in patients without polyps (P < .005). Patients with multiple polyps, polyps larger than 1 cm, and tubulovillous and villous adenoma from polyp types had a higher rate of H pylori infection (P = .095; P .004; P .001). When the polyps were evaluated according to their localization, H pylori infection rates were not different between the groups (P = .341). It has been observed that the rate of H pylori infection is higher in large polyps, multiple polyps, tubulovillous and villous adenomas, which are known to have a higher risk of malignancy.

1 January 2024 in Hepatology Forum
Verified
Journal Article
Open access
KMKenan Moral
Kenan Moral
BSBerkay Simsek
Berkay Simsek
Veysel Baran TomarVeysel Baran Tomar
Veysel Baran Tomar
HAHaluk Cihad Albayrak
Haluk Cihad Albayrak
MEMustafa Ergin
Mustafa Ergin
GAGulen Akyol
Gulen Akyol
Background and Aim: The histological diagnosis of autoimmune hepatitis (AIH) is challenging. A new consensus recommendation was provided by the International AIH Pathology Group to address the problems in the histological diagnosis. The purpose of this study is to compare the 2008 ‘simplified’ criteria for AIH with the ‘consensus recommendation’ of 2022 in terms of diagnostic sensitivity. Materials and Methods: A retrospective analysis was conducted on pathological specimens of patients diagnosed with Autoimmune Hepatitis (AIH) between 2010 and 2022. Out of 188 patients enlisted, 88 were selected based on exclusion criteria. The specimens were examined by two experienced hepatopathologists and a resident pathologist. All specimens were analyzed using both the “simplified” criteria and the new consensus recommendations. Results: Out of a total of 78 patients, the 2022 consensus recommendations raised the diagnostic category of 16 patients (20.5%) to a higher level. Six patients who were previously diagnosed as “atypical” were now considered “possible AIH”, while 10 patients with a “compatible” diagnosis were elevated to “likely AIH” category. No patients were found to fall into a lower diagnostic category according to the new recommendations. A significant difference in diagnostic sensitivity was observed between the 2008 criteria and the 2022 consensus report (p

15 July 2024 in Healthcare
Verified
Journal Article
Open access
PDF file
ÇBÇağrı Büyükkasap
Çağrı Büyükkasap
DADeniz Algan
Deniz Algan
NBNigar Balakji
Nigar Balakji
OMOnur Metindoğan
Onur Metindoğan
AKAli Karataş
Ali Karataş
HBHasan Bostancı
Hasan Bostancı
Laparoscopic cholecystectomy (LC) following endoscopic retrograde cholangiopancreatography (ERCP) is the preferred treatment for cholelithiasis with common bile duct stones. However, the optimal timing of LC after ERCP remains controversial. This study aimed to identify the ideal time interval between ERCP and LC. Data from patients who underwent LC after ERCP between November 2016 and August 2022 were retrieved from the electronic medical information system. The patients were categorized into early cholecystectomy (within 72 h of ERCP) and delayed cholecystectomy (after 72 h). The impact of the time interval between ERCP and LC on perioperative outcomes was analyzed. A total of 197 patients were included in the study, with 45 undergoing early cholecystectomy and 152 undergoing delayed cholecystectomy. No significant differences in the preoperative characteristics or operative morbidity were observed between the groups (p = 0.286). However, a significant correlation was found between the time interval from ERCP to LC and the total length of stay (r = −350, p < 0.001). The findings suggest that early cholecystectomy after ERCP is feasible and safe, and performing LC within the first 72 h does not adversely affect postoperative outcomes.

5 February 2025 in Journal of Clinical Medicine
Verified
Journal Article
Open access
PDF file
AKAli Karataş
Ali Karataş
TKTarkan Karakan
Tarkan Karakan
NENergiz Ekmen
Nergiz Ekmen
YÜYasemin ünsal
Yasemin ünsal
GTGulsum Feyza Turkes
Gulsum Feyza Turkes
HDHasan Dağlı
Hasan Dağlı
Background and Aim: Inflammatory bowel disease (IBD), which comprises ulcerative colitis (UC) and Crohn’s disease (CD), is characterized by chronic inflammation and fluctuating disease activity. This study aimed to evaluate serum tryptophan (TRP) and its metabolites as potential biomarkers for predicting disease activation in comparison to fecal calprotectin (FC). Methods: This prospective study included 115 patients (77 with UC and 38 with CD). Disease activity was assessed based on clinical and endoscopic findings. Serum TRP levels and their metabolites were measured using liquid chromatography–tandem mass spectrometry (LC-MS/MS), whereas FC levels were analyzed using an enzyme-linked immunosorbent assay (ELISA). Results: Serum TRP levels ≤ 11,328.41 ng/mL predicted disease activation with 72.1% sensitivity and 62.7% specificity, whereas FC levels ≥ 89.60 µg/g showed 84.2% sensitivity and 67.6% specificity. The TRP-to-C-reactive protein (CRP) ratio (TRP/CRP) demonstrated superior diagnostic accuracy, with an area under the curve (AUC) of 0.847. Conclusions: The TRP/CRP ratio is a novel and comprehensive approach for predicting disease activation in IBD patients. Although FC remains the gold standard, TRP and its metabolites provide valuable complementary insights. Further research is required to validate these findings in larger cohorts.

11 May 2021 in Aging Clinical and Experimental Research
Verified
Journal Article
Closed access
PDF file
UİUfuk İlgen
Ufuk İlgen
BÖBurak Özbaş
Burak Özbaş
AKAli Karataş
Ali Karataş
GKGuner Kilic
Guner Kilic
SKsuleyman emre Kocyigit
suleyman emre Kocyigit