Murat Dayangac

Prof. Murat Dayangac

orcid

Research Focus & Metrics

Academic Career Length

24Years (2003-Present)

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

Representative Publications

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1 May 2003 in Diseases of the Colon & Rectum
Verified
Journal Article
Closed access
MKMustafa Korkut
Mustafa Korkut
GIGökhan İçöz
Gökhan İçöz
MDMurat Dayangac
Murat Dayangac
EAErhan Akgün
Erhan Akgün
LYLevent Yeniay
Levent Yeniay
ÇÇÇağ Çal
Çağ Çal
Despite antibiotics and aggressive debridement, the mortality rate of Fournier's gangrene remains high. Attempts have been made to study factors that may affect prognosis; however, reliable criteria are still lacking. The medical records of 45 patients with Fournier's gangrene who presented at the Ege University Medical Faculty Hospital from January 1990 to May 2001 were reviewed retrospectively to analyze the outcome and identify the risk factors and prognostic indicators of mortality. Univariate analysis was performed using the chi-squared test and Fisher's exact probability test, then multivariate analysis of statistically significant variables was performed using logistic regression. The most prominent associated disease was diabetes, affecting 55.6 percent of the patients. The overall mortality rate was 20 percent. However, the mortality rate among diabetics was 36 percent (P= 0.002). The other statistically significant predictors of outcome were the interval from the onset of symptoms to the initial surgical intervention (P= 0.001) and the need of fecal diversion (P= 0.009). Multivariate regression analysis disclosed that the interval from the onset of symptoms to the initial surgical intervention and diabetes were independent predictors of mortality (P= 0.001 andP= 0.003, respectively). The interval from the onset of clinical symptoms to the initial surgical intervention seems to be the most important prognostic factor with a significant impact on outcome. Given the significantly high mortality rate among diabetics, diabetes is also an independent prognostic factor. Despite the decreased number of idiopathic cases and extensive therapeutic efforts, Fournier's gangrene remains a surgical emergency, and early recognition with prompt radical debridement is the mainstays of management.

30 July 2008 in Liver Transplantation
Verified
Journal Article
Open access
PDF file
CTC. Burcin Taner
C. Burcin Taner
MDMurat Dayangac
Murat Dayangac
BABaris Akin
Baris Akin
DBDeniz Balci
Deniz Balci
SUSuleyman Uraz
Suleyman Uraz
Yaman TokatYaman Tokat
Yaman Tokat
Living donor liver transplantation is now a common practice in countries in which the availability of cadaveric organs is limited. The preoperative preparation, intraoperative surgical technique, and postoperative care of donors and recipients have evolved in recent years. We retrospectively compared 67 donors with a remnant liver volume equal to or more than 30% (group 1) with 14 donors who had less than 30% remnant liver volume (group 2) for donor outcomes. All the complications in donors were systematically classified. Donors with less than 30% remnant liver volume showed significantly higher peak aspartate aminotransferase, alanine aminotransferase, international normalized ratio, and bilirubin levels. There were 6 complications in group 1 and 4 complications in group 2. The difference between the 2 groups in terms of donor complications did reach statistical significance (P = 0.043); donors with a remnant liver volume < 30% had a 4 times greater relative risk of morbidity. In conclusion, the use of donors with less than 30% remnant liver volume is highly debatable as donor safety should be of utmost importance in living donor liver transplantation. Liver Transpl 14:1174–1179, 2008. © 2008 AASLD.

18 December 2025 in Science
Verified
Journal Article
Closed access
MÁMaría Bueno Álvez
María Bueno Álvez
SBSofia Bergström
Sofia Bergström
JKJosefin Kenrick
Josefin Kenrick
EJEmil Johansson
Emil Johansson
MAMikael Aberg
Mikael Aberg
MUMathias Uhlen
Mathias Uhlen
The human blood proteome provides a holistic readout of health states through the assessment of thousands of circulating proteins. In this study, we present a pan-disease resource to enable the study of diverse disease phenotypes within a harmonized proteomics dataset. By profiling protein concentrations across 59 diseases and healthy cohorts, we identified proteins associated with age, sex, and body mass index, as well as disease-specific signatures. This study highlights shared and distinct protein patterns across conditions, demonstrating the power of a unified proteomics approach to uncover biological insights. The dataset, covering 8262 individuals and up to 5416 proteins, serves as an online resource for exploring disease-specific protein profiles and advancing precision medicine research.

15 October 2013 in Transplant International
Verified
Journal Article
Closed access
PDF file
NGNecdet Guler
Necdet Guler
MDMurat Dayangac
Murat Dayangac
OYOnur Yaprak
Onur Yaprak
MAMurat Akyildiz
Murat Akyildiz
YGYusuf Gunay
Yusuf Gunay
YTYaman Tokat
Yaman Tokat
In right lobe (RL) living donor liver transplantation (LDLT), portal vein (PV) variations are of immense clinical significance. In this study, we describe in detail our PV reconstruction techniques in RL grafts with variant PV anatomy and evaluate the impact of accompanying biliary variations on the recipient outcomes. In a total of 386 RL LDLTs performed between July 2004 and July 2012, the clinical data on 52 (13%) transplants using RL grafts with variant PV anatomy were retrospectively analyzed. Portal vein anatomy was classified as type 2 in 20 patients, type 3 in 24 patients, and type 4 in eight patients. The PV reconstruction techniques utilized included back-wall plasty (n = 21), back-wall plasty with saphenous vein graft interposition (n = 6), saphenous vein graft interposition (n = 5), cryopreserved iliac vein Y-graft interposition (n = 6), and quiltplasty (n = 3). There was no donor mortality. In a median follow-up of 29 months, none of the recipients had vascular complications. Anomalous PV anatomy was associated with a high (54%) incidence of biliary variations; however, these variations did not result in increased biliary complication rate. Overall, the 1- and 3-year patient survival rates of recipients were 91% and 81%, respectively. Vascular and biliary variations in RL grafts render LDLT technically more challenging. By employing appropriate reconstruction techniques, it is possible to successfully use RL grafts with PV variations without endangering recipient and donor safety.

20 January 2023 in Journal of Hepatology
Verified
Journal Article
Closed access
YFYiliam Fundora-Suárez
Yiliam Fundora-Suárez
AHAmelia Hessheimer
Amelia Hessheimer
LPLuca Del Prete
Luca Del Prete
LMLorenzo Maroni
Lorenzo Maroni
JLJacopo Lanari
Jacopo Lanari
CFConstantino Fondevila
Constantino Fondevila

25 January 2011 in Liver Transplantation
Verified
Journal Article
Open access
PDF file
MDMurat Dayangac
Murat Dayangac
BTBurcin C. Taner
Burcin C. Taner
OYOnur Yaprak
Onur Yaprak
TDTolga Demirbas
Tolga Demirbas
DBDeniz Balci
Deniz Balci
YTYaman Tokat
Yaman Tokat
An accepted definition of donor exclusion criteria has not been established for living donor liver transplantation (LDLT). The use of elderly donors to expand the living donor pool raises ethical concerns about donor safety. The aims of this study were (1) the comparison of the postoperative outcomes of living liver donors by age (≥50 versus <50 years) and (2) the evaluation of the impact of the extent of right hepatectomy on donor outcomes. The study group included 150 donors who underwent donor right hepatectomy between October 2004 and April 2009. Extended criteria surgery (ECS) was defined as right hepatectomy with middle hepatic vein (MHV) harvesting or right hepatectomy resulting in an estimated remnant liver volume (RLV) less than 35%. The primary endpoints were donor outcomes in terms of donor complications graded according to the Clavien classification. Group 1 consisted of donors who were 50 years old or older (n = 28), and group 2 consisted of donors who were less than 50 years old (n = 122). At least 1 ECS criterion was present in 74% of donors: 57% had 1 criterion, and 17% had 2 criteria. None of the donors had grade 4 complications or died. The overall and major complication rates were similar in the 2 donor age groups [28.6% and 14.3% in group 1 and 32% and 8.2% in group 2 for the overall complication rates (P = 0.8) and the major complication rates (P = 0.2), respectively]. However, there was a significant correlation between the rate of major complications and the type of surgery in donors who were 50 years old or older. In LDLT, extending the limits of surgery comes at the price of more complications in elderly donors. Right hepatectomy with MHV harvesting and any procedure causing an RLV less than 35% should be avoided in living liver donors who are 50 years old or older. Liver Transpl 17:548-555, 2011. © 2011 AASLD.