Necip Altundas

Dr. Necip Altundas


Research Focus & Metrics

Academic Career Length

9Years (2018-Present)

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

Representative Publications

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11 June 2025 in Medicina
Verified
Journal Article
Open access
PDF file
NANurhak Aksungur
Nurhak Aksungur
MKMurat Kızılkaya
Murat Kızılkaya
NANecip Altundas
Necip Altundas
EBEDA BALKAN
EDA BALKAN
SKSalih Kara
Salih Kara
AUAbdullah Uyanik
Abdullah Uyanik
Background/Objectives: This study aimed to evaluate the relationship between sirtuin family members (SIRT1, SIRT3, and SIRT6) and Wnt/β-catenin pathways with inflammation during the rejection process following kidney transplantation, as well as to explore their potential roles as candidate biomarkers. Materials and Methods: Blood samples were collected from 35 kidney transplant rejection patients and 30 healthy controls. The gene expression levels of SIRT1, SIRT3, SIRT6, and Wnt/β-catenin pathway components were measured using real-time PCR, and miRNA and lncRNA expression levels were analyzed. Statistical analyses were performed using SPSS version 23. Results: Significant alterations in SIRT1, SIRT3, and SIRT6 expression levels were observed in rejection patients, suggesting their potential role in disease pathogenesis and as therapeutic biomarkers. Key altered genes included hsa-miR-34c-1, hsa-miR-122b-5b, MALAT1, HOTAIR, LINC00473, TUG, PVT1, SIRT1, SIRT3, SIRT6, WNT1, TCF-LEF, LRP, AXIN1, IL1B, IL6, and IFNB1, all showing significant changes. However, no significant differences were found for miRNAs such as hsa-miR-21-2, hsa-miR-155-5p, and hsa-miR-200b-3p. SIRT1 expression was significantly decreased in the cellular rejection group, with a more pronounced reduction in these patients. Significant differences in SIRT1 expression were observed with interstitial inflammation and glomerulitis. Increased inflammation severity correlated with decreased SIRT1 and increased TCF-LEF, TUG, and miR-21 levels, while tubulitis severity was associated with elevated TCF-LEF and miR-155 expression. Conclusions: Along with the activation of Wnt/β-catenin pathways and increased levels of certain miRNAs and long non-coding RNAs (lncRNAs) associated with TCF-LEF transcription factors, the observed decrease in SIRT1 expression may be related to the severity of inflammation and tubulitis. These findings suggest that SIRT1, Wnt/β-catenin pathways, and non-coding RNAs play a role in the rejection process following kidney transplantation and could be considered as potential biomarkers or therapeutic target candidates for future research.

6 March 2025 in Medicina
Verified
Journal Article
Open access
PDF file
NANecip Altundas
Necip Altundas
EBEDA BALKAN
EDA BALKAN
MKMurat Kızılkaya
Murat Kızılkaya
MAMurat ALTUNOK
Murat ALTUNOK
EDElif Demirci
Elif Demirci
AUAbdullah Uyanik
Abdullah Uyanik
Background and Objectives: The aim of this study was to investigate the changes in the SIRT family, the effects of sirtuins on kidney graft function, and their potential as biomarkers in patients who develop rejection after kidney transplantation. Materials and Methods: Blood samples were collected from 45 kidney transplant patients before and after rejection. Some of these patients experienced T-cell-mediated early rejection (TCMR), while others presented antibody-mediated late rejection (ABMR). The mRNA expression levels of SIRT-1, SIRT-3, and SIRT-7 were measured via real-time PCR, while the protein levels of SIRT-1, SIRT-2, SIRT-3, SIRT-5, and SIRT-7 were assessed using ELISA. Patients were grouped based on rejection type and histological characteristics. Statistical analyses were performed using SPSS software (V23). Results: The mean age of the patient group was 42.22, while the control group had a mean age of 35.23 (p = 0.002). SIRT-1, SIRT-3, and SIRT-7 levels were significantly higher in patients with rejection (p < 0.001). In patients with late-stage rejection, SIRT-3 was found to be associated with interstitial fibrosis and C4d accumulation. SIRT-7 levels showed a weak correlation with potassium levels (p = 0.014). Conclusions: Our findings demonstrate significant changes in the SIRT family during both early- and late-stage rejection processes. Particularly, the role of SIRT-3 in the late stage is highlighted, suggesting the potential use of this gene as a biomarker for managing rejection processes. These findings could provide valuable insights for developing treatment strategies in organ transplantation.

29 November 2022 in Cureus
Verified
Journal Article
Open access
EKErcan Korkut
Ercan Korkut
NANurhak Aksungur
Nurhak Aksungur
NANecip Altundas
Necip Altundas
SKSalih Kara
Salih Kara
FCFerdi Cambaztepe
Ferdi Cambaztepe
KKKamber Kaşali
Kamber Kaşali
Incisional hernias are one of the most common complications after abdominal surgery. Surgical repairs of large incisional hernias have higher complications and recurrence rates compared to smaller incisional hernia repairs. For this reason, it is a more difficult and experience-requiring application for surgeons. In addition, there is no evidence-based consensus in the literature regarding the optimal surgical treatment of large incisional hernias. The aim of this study is to compare the results of the three most common surgical treatment methods used in a tertiary university hospital for the repair of large incisional hernias in terms of patients' characteristics, recurrence, and complication rates of the treatment methods. Between 2014 and 2020, 366 patients with incisional hernias with facial defects larger than 10 cm in a tertiary medical faculty hospital located in eastern Turkey were analyzed. Patients were divided into three groups according to the surgical method used: open onlay prolene mesh (OPM) method, laparoscopic intraperitoneal sublay dual mesh (IPSDM) method, and open IPSDM method. Postoperative complications were divided into five groups as follows: wound complications, complications due to surgical procedures, medical complications, recurrences, and mortality. Treatment methods were compared according to the demographic characteristics of the patients and the postoperative complication rates. Of the patients, 141 were male and 225 were female, and the mean age was 58.0 ± 28 years. Of the patients, 81.9% were operated on with the open OPM, 10.9% with the laparoscopic IPSDM, and 7.1% with the open IPSDM. Wound complications occurred in 26.7% of patients, surgical complications in 3.2%, medical complications in 6.5%, recurrence in 9.2%, and mortality in 0.8% of patients. Total wound complications were significantly higher in the open OPM group (30%) (p = 0.009). Total surgery complications were significantly higher in the laparoscopic IPSDM group (15%) (p = 0.002). There was no significant difference between groups for medical complications (p = 0.540). Although no recurrence was observed in the open IPSDM group, no significant difference was observed between the groups (p = 0.099). There was no difference in mortality rates between the groups (p = 0.450). The overall complication rate was highest in the open OPM group (48.3%) and lowest in the open IPSDM group (27%) (p = 0.092). The operative time was found to be significantly shorter in open IPSDM (p < 0.001). The length of hospital stay was highest in the open OPM group and lowest in the open IPSDM group (p = 0.450). Although hernia defect is greater in the open IPSDM compared to other methods, this method is more advantageous in terms of the complication rate associated with the surgical procedure, the overall complication rate, the duration of surgery, and the recurrence rate. Laparoscopic IPSDM is a more advantageous method in terms of the overall wound and medical complications.

22 July 2022 in Cureus
Verified
Journal Article
Open access
EKErcan Korkut
Ercan Korkut
NANurhak Aksungur
Nurhak Aksungur
NANecip Altundas
Necip Altundas
SKSalih Kara
Salih Kara
RPRıfat Peksöz
Rıfat Peksöz
GÖGürkan Öztürk
Gürkan Öztürk
Giant incisional herniae are larger than 15 cm and are typically treated with an open approach. Our aim was to highlight the outcomes of treating giant incisional hernia using open intraperitoneal dual mesh. Between January 2015 and December 2021, 25 patients with giant incisional hernias, where fascial defects were 15-30 cm, were evaluated retrospectively. Intraperitoneal dual mesh was used in all patients. The patients were evaluated in terms of age, gender, body mass index (BMI), previous abdominal surgeries, defect diameter, anesthesia method, length of hospital stay, drain application, complications, and recurrence. Eleven of the patients were male and 14 were female. The mean age was 62±13.5 years (29-82 years). The average BMI was 32 kg/m2 (20-52 kg/m2). The mean size of the fascial defect was 22±5.5 cm (15-30). The mean operation time was 90 minutes (70-130 minutes). Six patients had type I and II complications according to the Clavien-Dindo classification, specifically superficial skin infections, skin erosion, subcutaneous bleeding, and temporary ileus due to intestinal adhesion. During the average follow-up period of 36 months (6-70 months), no major complications were observed related to the recurrence and use of dual mesh. In the treatment of giant incisional hernia, open intraperitoneal dual mesh application should be kept in mind as an effective treatment option with low complication and recurrence rates.


25 October 2026 in Journal of Clinical Medicine
Verified
Journal Article
Open access
PDF file
BABilal Aydın
Bilal Aydın
MYMetin Yıldız
Metin Yıldız
NANurhak Aksungur
Nurhak Aksungur
NANecip Altundas
Necip Altundas
SKSalih Kara
Salih Kara
GÖGürkan Öztürk
Gürkan Öztürk
Background/Objectives: Residual cavity complications contribute to morbidity after conservative surgery for hepatic cystic echinococcosis (HCE). We compared omentoplasty and tube drainage in patients with HCE at high risk of biliary complications. Methods: This prospective, single-center, nonrandomized study included 60 patients allocated alternately to omentoplasty or tube drainage (30 per group). The primary outcome was bile leakage and/or residual cavity complications within 30 days after surgery. Exploratory Firth logistic regression adjusted for cyst diameter and preoperative cholangitis. Holm correction was applied to five secondary outcomes. Results: The primary outcome occurred in 6/30 (20.0%) versus 16/30 (53.3%) patients (risk ratio 0.375; 95% confidence interval [CI] 0.170–0.826; p = 0.015). Adjusted odds were higher with tube drainage (odds ratio 5.25; 95% CI 1.51–22.72; p = 0.008). This association persisted after additional adjustment for preoperative endoscopic retrograde cholangiopancreatography. Surgical site infection (3.3% vs. 30.0%) and percutaneous intervention (0% vs. 26.7%) were less frequent with omentoplasty (Holm-adjusted p = 0.049 and 0.023, respectively). The operative-time difference was not significant after Holm adjustment. Bile leakage occurred in 20.0% versus 36.7% (p = 0.252). Mean follow-up was 68.8 ± 5.8 months; all patients completed at least 60 months, with no loss to follow-up. Recurrence occurred in 3.3% versus 13.3% (p = 0.353). Conclusions: Omentoplasty was associated with a lower incidence of the composite outcome, including after adjustment. These findings support its use in suitable patients and warrant confirmation in larger randomized studies.