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KOÇ, MEHMET

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Author: ARIKAN, İZZET HAKKI × Subject: DISEASE ×

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Now showing 1 - 3 of 3
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    Waist circumference is associated with carotid intima media thickness in peritoneal dialysis patients
    (SPRINGER, 2013) VELİOĞLU, ARZU; Asicioglu, Ebru; Kahveci, Arzu; Arikan, Hakki; Koc, Mehmet; Tuglular, Serhan; Ozener, Cetin Ishak
    Atherosclerosis is responsible for the high mortality rate in end-stage renal disease patients. Defining risk factors for atherosclerosis may lead to reduction in cardiovascular disease through modification of these factors. Peritoneal dialysis (PD) patients are subjected to high glucose loads on a daily basis, which results in considerable weight gain and an increase in waist circumference (WC). WC as an indicator of abdominal obesity is a risk factor for atherosclerosis in the general population. Carotid artery intima media thickness (CIMT) measurement is a reliable method for the detection of early atherosclerosis. The aim of this study was to investigate the relationship between WC and CIMT and to define risk factors associated with CIMT in PD patients. Fifty-five PD patients and 40 healthy controls were included. Atherosclerosis was assessed using measurement of CIMT. Fasting blood was collected for analysis. Anthropometric parameters (age, weight, BMI, and WC) were measured. Peritoneal dialysis patients had higher WC (93.9 +/- A 1.7 vs. 87.3 +/- A 1.2 cm, p < 0.05) and CIMT (0.70 +/- A 0.02 vs. 0.57 +/- A 0.01 mm, p < 0.01) than the control group. On univariate analysis, age, WC, plaque formation, and D/P creatinine were positively correlated with CIMT, whereas residual renal function, albumin, ultrafiltration volume, and D/D0 glucose were negatively correlated. On multivariate analysis, only age, WC, and plaque formation showed correlation (p < 0.001). Carotid artery intima media thickness is associated with age, plaque formation, and WC in PD patients. WC measurement is a simple, inexpensive, reproducible, and reliable method of evaluating atherosclerosis risk in PD patients and should be assessed at every visit. Appropriate counsel should be provided to patients with greater WC who are deemed to be at risk for atherosclerosis.
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    PublicationOpen Access
    The genetic architecture of membranous nephropathy and its potential to improve non-invasive diagnosis
    (NATURE PUBLISHING GROUP, 2020-12) ARIKAN, İZZET HAKKI; Xie, Jingyuan; Liu, Lili; Mladkova, Nikol; Li, Yifu; Ren, Hong; Wang, Weiming; Cui, Zhao; Lin, Li; Hu, Xiaofan; Yu, Xialian; Xu, Jing; Liu, Gang; Caliskan, Yasar; Sidore, Carlo; Balderes, Olivia; Rosen, Raphael J.; Bodria, Monica; Zanoni, Francesca; Zhang, Jun Y.; Krithivasan, Priya; Mehl, Karla; Marasa, Maddalena; Khan, Atlas; Ozay, Fatih; Canetta, Pietro A.; Bomback, Andrew S.; Appel, Gerald B.; Sanna-Cherchi, Simone; Sampson, Matthew G.; Mariani, Laura H.; Perkowska-Ptasinska, Agnieszka; Durlik, Magdalena; Mucha, Krzysztof; Moszczuk, Barbara; Foroncewicz, Bartosz; Paczek, Leszek; Habura, Ireneusz; Ars, Elisabet; Ballarin, Jose; Mani, Laila-Yasmin; Vogt, Bruno; Ozturk, Savas; Yildiz, Abdulmecit; Seyahi, Nurhan; Arikan, Hakki; Koc, Mehmet; Basturk, Taner; Karahan, Gonca; Akgul, Sebahat Usta; Sever, Mehmet Sukru; Zhang, Dan; Santoro, Domenico; Bonomini, Mario; Londrino, Francesco; Gesualdo, Loreto; Reiterova, Jana; Tesar, Vladimir; Izzi, Claudia; Savoldi, Silvana; Spotti, Donatella; Marcantoni, Carmelita; Messa, Piergiorgio; Galliani, Marco; Roccatello, Dario; Granata, Simona; Zaza, Gianluigi; Lugani, Francesca; Ghiggeri, GianMarco; Pisani, Isabella; Allegri, Landino; Sprangers, Ben; Park, Jin-Ho; Cho, BeLong; Kim, Yon Su; Kim, Dong Ki; Suzuki, Hitoshi; Amoroso, Antonio; Cattran, Daniel C.; Fervenza, Fernando C.; Pani, Antonello; Hamilton, Patrick; Harris, Shelly; Gupta, Sanjana; Cheshire, Chris; Dufek, Stephanie; Issler, Naomi; Pepper, Ruth J.; Connolly, John; Powis, Stephen; Bockenhauer, Detlef; Stanescu, Horia C.; Ashman, Neil; Loos, Ruth J. F.; Kenny, Eimear E.; Wuttke, Matthias; Eckardt, Kai-Uwe; Koettgen, Anna; Hofstra, Julia M.; Coenen, Marieke J. H.; Kiemeney, Lambertus A.; Akilesh, Shreeram; Kretzler, Matthias; Beck, Lawrence H.; Stengel, Benedicte; Debiec, Hanna; Ronco, Pierre; Wetzels, Jack F. M.; Zoledziewska, Magdalena; Cucca, Francesco; Ionita-Laza, Iuliana; Lee, Hajeong; Hoxha, Elion; Stahl, Rolf A. K.; Brenchley, Paul; Scolari, Francesco; Zhao, Ming-hui; Gharavi, Ali G.; Kleta, Robert; Chen, Nan; Kiryluk, Krzysztof
    Membranous Nephropathy (MN) is a rare autoimmune cause of kidney failure. Here we report a genome-wide association study (GWAS) for primary MN in 3,782 cases and 9,038 controls of East Asian and European ancestries. We discover two previously unreported loci, NFKB1 (rs230540, OR = 1.25, P = 3.4 x 10(-12)) and IRF4 (rs9405192, OR = 1.29, P = 1.4 x 10(-14)), fine-map the PLA2R1 locus (rs17831251, OR = 2.25, P = 4.7 x 10(-103)) and report ancestry-specific effects of three classical HLA alleles: DRB1*1501 in East Asians (OR = 3.81, P = 2.0 x 10(-49)), DQA1*0501 in Europeans (OR = 2.88, P = 5.7 x 10(-93)), and DRB1*0301 in both ethnicities (OR = 3.50, P = 9.2 x 10(-23) and OR = 3.39, P = 5.2 x 10(-82), respectively). GWAS loci explain 32% of disease risk in East Asians and 25% in Europeans, and correctly re-classify 20-37% of the cases in validation cohorts that are antibody-negative by the serum anti-PLA2R ELISA diagnostic test. Our findings highlight an unusual genetic architecture of MN, with four loci and their interactions accounting for nearly one-third of the disease risk.
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    Streptococcus bovis bacteremia related to colon adenoma in a chronic hemodialysis patient
    (WILEY-BLACKWELL PUBLISHING, INC, 2010) VELİOĞLU, ARZU; Kahveci, Arzu; Ari, Elif; Arikan, Hakki; Koc, Mehmet; Tuglular, Serhan; Ozener, Cetin
    We report the case of a 54-year-old hemodialysis patient who presented with recurrent fever due to Streptococcus bovis bacteremia related to colonic tubulovillous adenoma. Following polypectomy and broad-spectrum antibiotic therapy, the patient totally recovered. In this paper, we discussed the relation between S. bovis bacteremia, colonic adenomas, and hemodialysis. Awareness of this association is critical for early diagnosis and management.