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Ağaccıoğlu M, Sirin Karaarslan E, Aytac Bal F, Benli İ. Bond strength comparison of a fiber-reinforced composite resin: Different dentin conditions and preparation techniques. Microsc Res Tech 2024; 87:1250-1261. [PMID: 38339919 DOI: 10.1002/jemt.24515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 12/31/2023] [Accepted: 02/01/2024] [Indexed: 02/12/2024]
Abstract
This study aimed to compare the bond strength of a fiber-reinforced composite resin with traditional and bulk-fill composite resins under different dentin conditions and preparation techniques. Eighty molar teeth, excluding the mesio-distal half of the occlusal dentin surfaces of each teeth, were isolated with acid-resistant nail varnish and stored in a demineralisation solution (pH 4.5). After mechanical removal of the varnish, the teeth were buried in acrylic resin blocks. In every composite resin group, one-half of the specimens were prepared with a diamond bur and another half with Er: YAG laser. Then, the specimens were divided into four groups of composite resins (Filtek Z250, G-aenial Posterior, SonicFill 2, Ever X Posterior) (n = 10). Shear bond strengths were measured using a universal testing device, and failure types were determined with stereomicroscope images. SEM images were obtained at 1000× magnification. Data were analyzed using a three-way analysis of variance (ANOVA), and Bonferroni correction was used for multiple comparisons (p = .05). Differences in the dentin surface affected the bond strength results (p < .05), whereas there was no significant difference between cavity preparation methods (p > .05). EverX Posterior showed the highest bond strength results. Within the limitations of this study, fiber-reinforced composite resin exhibited successful bond strength results in addition to improved mechanical properties. RESEARCH HIGHLIGHTS: Fiber-reinforced composite had successful bond strength values. Bond strength values of sound dentin groups were higher than those of caries-affected dentin groups. The use of an Er: YAG laser for preparation did not lead to insufficient bond strength results.
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Affiliation(s)
- Merve Ağaccıoğlu
- Department of Restorative Dentistry, Faculty of Dentistry, Bolu Abant Izzet Baysal University, Bolu, Turkey
| | - Emine Sirin Karaarslan
- Department of Restorative Dentistry, Faculty of Dentistry, Tokat Gaziosmanpasa University, Tokat, Turkey
| | - Fatma Aytac Bal
- Department of Restorative Dentistry, Faculty of Dentistry, Biruni University, Istanbul, Turkey
| | - İsmail Benli
- Laboratory Specialist, Sugenomics Biotechnology, Ankara, Turkey
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Fırat F, Erdemir F, Kölükçü E, Gevrek F, Benli İ, Ünsal V. Oxytocin for preventing injury due to testicular torsion/detorsion in rats. ULUS TRAVMA ACIL CER 2018; 24:89-96. [PMID: 29569694 DOI: 10.5505/tjtes.2017.25730] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND We aimed to demonstrate the effectiveness of oxytocin on the testes for treating ischemia-reperfusion injury. METHODS A total of 24 male Wistar albino rats weighing 250-320 g were used. The rats were randomized into three groups of eight rats. Group 1 was assessed as the control group. In Group 2 rats, testicular torsion was first performed, followed by testicular detorsion to induce reperfusion injury. In Group 3, following testicular torsion and detorsion, oxytocin was administered before inducing reperfusion. Testicular tissues were histologically evaluated, spermatogenic parameters were assessed using the Johnsen scoring system, and the mean Johnsen score was calculated. RESULTS Histological tests revealed significantly different results between the testicular torsion group and the oxytocin-treated torsion and control groups as well as between the oxytocin-treated torsion group and the control and testicular torsion groups (p=0.010 and 0.012, respectively). Biochemical test results revealed that superoxide dismutase and glutathione peroxidase levels were significantly lower in Group 2 than in Group 1 (p=0.007 and 0.007, respectively). Malondialdehyde and nitric oxide levels were significantly lower in Group 3 than in Group 2 (p=0.017 and 0.014, respectively). CONCLUSION These results indicate that oxytocin can be considered as an alternative agent for treating testicular torsion in clinical practice to minimize tissue damage.
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Affiliation(s)
- Fatih Fırat
- Department of Urology, Tokat State Hospital, Tokat-Turkey.
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Solmaz V, Pekdaş Genç E, Aksoy D, Çevik B, Kurt SG, Benli İ. Parkinson hastalarında nötrofil/lenfosit oranları, C reaktif protein ve sedimantasyon hızlarının değerlendirilmesi. Cukurova Medical Journal 2018. [DOI: 10.17826/cumj.341649] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Yılmaz Doğru H, Benli İ, Doğru S. The oxidative/anti-oxidative effects of sevoflurane on reproductive system of females: An experimental study. Turk J Obstet Gynecol 2017; 14:228-232. [PMID: 29379665 PMCID: PMC5780566 DOI: 10.4274/tjod.78871] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Accepted: 11/02/2017] [Indexed: 01/06/2023] Open
Abstract
Objective: A permanent balance exists between the production and elimination of reactive oxygen species in all living organisms. The aim of this study was to evaluate the effects of sevoflurane possibly causing an imbalance in the equation of reactive oxygen species on the female rat reproductive system. Materials and Methods: A total of 30 adult female Wistar-albino rats were placed into an anesthesia chamber to administer sevoflurane. Rats were randomly divided into six groups, each group consisting of five rats: the control group received 2 L/min O2 18 min/day for seven days; the first group received 1 minimum alveolar concentration (MAC) of sevoflurane and 2 L/min O2 18 min/day for seven days; the second group received 1 MAC of sevoflurane and 2 L/min O2 18 min/day for seven days with no treatment for the next seven days; the third group received 1 MAC of sevoflurane and 2 L/min O2 18 min/day for 14 days; the fourth group received 1 MAC of sevoflurane and 2 L/min O2 18 min/day for 14 days with no treatment for the next seven days; and the fifth group received 1 MAC of sevoflurane and 2 L/min O2 18 min/day for 14 days with no treatment for the next 14 days. Bilateral ovaries were subsequently removed for biochemical analysis of tissue anti-oxidative enzyme levels. Results: Slight fluctuations were detected in mean nitric oxide, prostaglandin E2, prostaglandin F2-alpha, superoxide dismutase, glutathione peroxidase, malondialdehyde, alginate dialdehyde, and xanthine oxidase levels between the groups; however, the differences were not significant (p>0.05). Conclusion: Sevoflurane has no effect on the activity of anti-oxidant systems in the rat ovary.
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Affiliation(s)
- Hatice Yılmaz Doğru
- Gaziosmanpaşa University Faculty of Medicine, Department of Obstetrics and Gynecology, Tokat, Turkey
| | - İsmail Benli
- Gaziosmanpaşa University Faculty of Medicine, Department of Biochemistry, Tokat, Turkey
| | - Serkan Doğru
- Gaziosmanpaşa University Faculty of Medicine, Department of Anesthesiology and Reanimation, Tokat, Turkey
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Akar İ, İnce İ, Aslan C, Benli İ, Demir O, Altındeger N, Dogan A, Ceber M. Oxidative Stress And Prolidase Enzyme Activity In The Pathogenesis Of Primary Varicose Veins. Vascular 2017; 26:315-321. [PMID: 29216795 DOI: 10.1177/1708538117741764] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Objectives Vascular endothelial dysfunction leads to the emerging of free oxygen radicals, deficiency of antioxidant system, forming of oxidative stress, inflammatory processes and release of proinflammatory cytokines. These things play big role in the development of primary varicose veins. Prolidase has been reported as an indicator of oxidative stress in diabetes, diabetic neuropathy, non-ulcerous dyspepsia, osteoporosis, polycystic over syndrome and many other diseases. The aim of this study is to evaluate the oxidative stress at venous insufficiency and to provide preliminary knowledge about the role of prolidase enzyme in varicose vein formation. Methods Ninety patients aged between 22 and 80 (47.35 ± 17.69) were included in the study and divided into 3 groups. Group1(n:30)(Serum control group): Patients without venous insufficiency. Group 2(n:30)(Tissue control group(healthy vein group): Patients underwent coronary artery bypass surgery (the remaining portion of great saphenous vein used as coronary artery bypass graft used as normal tissue) . Group 3(n:30)(Varicose vein group): Patients underwent varicose vein surgery (varicose vein and serum of these patients were used for study). Total Oxidant Status (TOS), Total Antioxidant Status (TAS), Oxidative Stress Index (OSI) and Prolidase enzyme levels were detected in tissue and serum samples. Results No significant changes were detected between three groups' serum samples in oxidative stress parameters and in the prolidase enzyme activity. The tissue TOS and OSI were higher in varicose vein group according to normal vein group and this was found statistically significant. And TAC levels in varicose vein group were significantly lower than normal vein group. Prolidase enzyme activity in varicose vein group was found higher according to normal vein group. Conclusion Oxidative stress plays a role at the development of primary varicose veins at biochemical level. Prolidase enzyme related with oxidative stress may play an important role in the pathogenesis of primary varicose veins.
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Affiliation(s)
- İlker Akar
- 1 Gaziosmanpasa University Faculty of Medicine, Deparment of Cardiovascular Surgery, Tokat, TURKEY
| | - İlker İnce
- 2 Diskapi Educational and Research Hospital, Cardiovascular Surgery Clinic, Ankara, TURKEY
| | - Cemal Aslan
- 3 State Hospital Cardiovascular Surgery Clinic, Tokat, TURKEY
| | - İsmail Benli
- 4 Gaziosmanpaşa University Faculty of Medicine, Department of Biochemistry, Tokat, TURKEY
| | - Osman Demir
- 5 Gaziosmanpaşa University Faculty of Medicine, Department of Biostatistics, Tokat, TURKEY
| | - Nuray Altındeger
- 1 Gaziosmanpasa University Faculty of Medicine, Deparment of Cardiovascular Surgery, Tokat, TURKEY
| | - Abdullah Dogan
- 6 Acıbadem Hospital, Deparment of Cardiovascular Surgery, Istanbul, TURKEY
| | - Mehmet Ceber
- 3 State Hospital Cardiovascular Surgery Clinic, Tokat, TURKEY
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Kalkan G, Seçkin HY, Benli İ, Akbaş A, Ateş Ö, Özyurt H, Baş Y, Oğrum A, Pancar GŞ. Association of paraoxonase 1 (PON1) L55M and PON1 Q192R gene polymorphisms and risk of psoriasis. GIORN ITAL DERMAT V 2017; 154:321-326. [PMID: 28399619 DOI: 10.23736/s0392-0488.17.05514-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Although there have been significant advances for clarifying the pathogenesis of psoriasis, exact pathogenic mechanism of the disease is still unknown. Oxidative stress is considered to be a new etiopathogenetic key factor in the pathogenesis of psoriasis, as a result of the studies performing the association between psoriasis and paraoxonase 1 (PON1) activity. In this study, we aimed to examine the possible associations between the both PON1 L55M and PON1 Q192R polymorphisms and psoriasis susceptibility and disease progression in Turkish population. METHODS The study group consisted of 100 unrelated patients with psoriasis and 153 unrelated healthy controls with no psoriatic lesions in their personal history or on clinical examination. Genomic DNA was extracted from peripheral leukocytes from EDTA-anticoagulated blood using the High Pure Polymerase Chain Reaction Template Preparation Kit. To identify PON1 L55M and Q192R single-nucleotide polymorphisms, genotyping was performed using commercially synthesized primers and fluorescently labeled probes and the LightCycler 480 II Real-Time Polymerase Chain Reaction System. The genotyping method was based on methods developed previously for genotyping both PON1 55 and 192 polymorphisms using LightCycler real-time polymerase chain reaction technology, which relies on fluorescence resonance energy transfer. RESULTS There was no significant difference between the PON1 L55M genotype distributions and allele frequencies of the psoriasis patients and the control group. There was a statistically significant difference between distributions of the genotype or allele frequencies of the PON1 Q192R of the patient groups and control subjects (P=0.0018 and P=0.0001, respectively). PON192Q/R polymorphisms have been found to be associated with susceptibility to psoriasis. CONCLUSIONS This is the first report simultaneously investigating the possible associations between the PON1 L55M and PON1 Q192R polymorphisms and psoriasis susceptibility and disease progression in Turkish population. We provide evidence that PON1 Q192R polymorphisms may have an effect on the risk of psoriasis in the Turkish population.
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Affiliation(s)
- Göknur Kalkan
- Department of Dermatology, School of Medicine, Yıldırım Beyazıt University, Ankara, Turkey -
| | - Havva Y Seçkin
- Department of Dermatology, School of Medicine, Gaziosmanpasa University, Tokat, Turkey
| | - İsmail Benli
- Department of Biochemistry, School of Medicine, Gaziosmanpasa University, Tokat, Turkey
| | - Ali Akbaş
- Department of Biochemistry, School of Medicine, Gaziosmanpasa University, Tokat, Turkey
| | - Ömer Ateş
- Department of Medical Biology, School of Medicine, Gaziosmanpasa University, Tokat, Turkey
| | - Hüseyin Özyurt
- Department of Biochemistry, School of Medicine, Gaziosmanpasa University, Tokat, Turkey
| | - Yalçın Baş
- Department of Dermatology, School of Medicine, Gaziosmanpasa University, Tokat, Turkey
| | - Atiye Oğrum
- Department of Dermatology, Tokat State Hospital, Tokat, Turkey
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Demir AK, Kaya SU, Şahin Ş, Benli İ, Bütün İ, Erken E, Tasliyurt T. Single nucleotide polymorphism of adiponectin +276 G/T is associated with the susceptibility to essential hypertension in a Turkish population. Clin Exp Hypertens 2016; 38:686-690. [PMID: 27936341 DOI: 10.1080/10641963.2016.1200607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
BACKGROUND It is well known that arterial stiffness is associated with hypertension. Recent studies have shown that adiponectin +276 G/T, ACE I/D, AGTR1 A1166C, and eNOS E298D polymorphisms are likely to be risk factors for arterial stiffness. In this study, we aimed to investigate possible associations between these single-nucleotide polymorphisms (SNPs) and essential hypertension in a Turkish population. METHODS The study population consisted of 170 patients who were diagnosed with essential hypertension and 170 sex- and age-matched controls. Genotyping of adiponectin +276 G/T, ACE I/D, AGTR1 A1166C, and eNOS E298D SNPs were performed using real-time polymerase chain reaction and commercially produced kits. RESULTS The percentage of the adiponectin +276 T allele carriers was significantly higher in the patients with hypertension (33%) than in the controls (25%, p < 0.011). Through multiple logistic regression analysis, the adiponectin +276 T allele carrier was found to be associated with an increased risk of hypertension (TT vs. GG and TG: odds ratio = 3.318, p = 0.014, 95% confidence interval: 1.269-8.678). The genotype distributions or allelic frequencies of ACE I/D, AGTR1 A1166C, and eNOS E298D SNPs did not significantly differ between the patients with hypertension and the controls. CONCLUSION The present study demonstrated that the adiponectin +276 G/T SNP is likely to be a risk factor for essential hypertension in a Turkish population.
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Affiliation(s)
- Ayşe Kevser Demir
- a Department of Internal Medicine , Gaziosmanpasa University Faculty of Medicine , Tokat , Turkey
| | - Süheyla Uzun Kaya
- a Department of Internal Medicine , Gaziosmanpasa University Faculty of Medicine , Tokat , Turkey
| | - Şafak Şahin
- a Department of Internal Medicine , Gaziosmanpasa University Faculty of Medicine , Tokat , Turkey
| | - İsmail Benli
- b Department of Biochemistry , Gaziosmanpasa University Faculty of Medicine , Tokat , Turkey
| | - İlknur Bütün
- b Department of Biochemistry , Gaziosmanpasa University Faculty of Medicine , Tokat , Turkey
| | - Ertuğrul Erken
- c Department of Nephrology , Gaziosmanpasa University Faculty of Medicine , Tokat , Turkey
| | - Turker Tasliyurt
- a Department of Internal Medicine , Gaziosmanpasa University Faculty of Medicine , Tokat , Turkey
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Kalkan G, Seçkin HY, Benli İ, Akbaş A, Baş Y, Karakus N, Bütün İ, Özyurt H. Relationship between manganese superoxide dismutase (MnSODAla-9Val) and glutathione peroxidase (GPx1 Pro 197 Leu) gene polymorphisms and alopecia areata. Int J Clin Exp Med 2015; 8:21533-21540. [PMID: 26885102 PMCID: PMC4723947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Accepted: 10/25/2015] [Indexed: 06/05/2023]
Abstract
OBJECTIVE The role of the oxidative stress in alopecia areata (AA) has been studied by several researchers in a few studies with conflicting results. These results suggested that lipid peroxidation and alterations in the oxidant-antioxidant enzymatic system may play a role in the pathogenesis of AA. Therefore, we aimed to examine the possible associations between the MnSOD Ala-9Val and GPx1 Pro 198 Leu polymorphisms and AA susceptibility and disease progression in Turkish population. METHODS The study group consisted of 119 unrelated patients with AA and 104 unrelated healthy controls with no scalp lesions in their personal history or on clinical examination. Genotyping was performed to identify MnSOD Ala-9Val and GPx1 Pro 198 Leu polymorphisms by a method based on PCR amplification and detection of polymorphisms with hybridization probes labeled with fluorescent dyes. Genotype and allele frequencies were compared between patients with AA and healthy control subjects. RESULTS There was no significant difference between the MnSOD Ala-9Val SNP genotype distributions and allele frequencies of the AA patients and the control group (P=0.168 and P=0.820, respectively). There was not any association between clinical and demographical features of the study patients with AA and MnSOD Ala-9Val and GPx1 Pro 198 Leu polymorphism genotypes except gender. CONCLUSIONS This study is unique since an investigation to reveal the possible associations between the MnSOD Ala-9Val and GPx1 Pro 198 Leu polymorphisms and AA susceptibility and in Turkish population.
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Affiliation(s)
- Göknur Kalkan
- Department of Dermatology, School of Medicine, Yıldırım Beyazıt UniversityAnkara, Turkey
| | - Havva Yıldız Seçkin
- Department of Dermatology, School of Medicine, Gaziosmanpasa UniversityTokat, Turkey
| | - İsmail Benli
- Department of Biochemistry, School of Medicine, Gaziosmanpasa UniversityTokat, Turkey
| | - Ali Akbaş
- Department of Biochemistry, School of Medicine, Gaziosmanpasa UniversityTokat, Turkey
| | - Yalçın Baş
- Department of Dermatology, School of Medicine, Gaziosmanpasa UniversityTokat, Turkey
| | - Nevin Karakus
- Department of Medical Biology, School of Medicine, Gaziosmanpasa UniversityTokat, Turkey
| | - İlknur Bütün
- Department of Biochemistry, School of Medicine, Gaziosmanpasa UniversityTokat, Turkey
| | - Hüseyin Özyurt
- Department of Biochemistry, School of Medicine, Gaziosmanpasa UniversityTokat, Turkey
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Demir HD, Ortak H, Şahin Ş, Ateş Ö, Benli İ, İnanır A. VKORC1 C1173Tand VKORC1 G-1639AGene Polymorphisms in Turkish Behçet’s Patients with Ocular and Non-ocular Involvement. Ophthalmic Genet 2014; 35:7-11. [DOI: 10.3109/13816810.2013.763994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Kalkan G, Seçkin HY, Baş Y, Benli İ, Özyurt H, Ateş Ö, Özdemir A, Pancar GŞ. Analysis of manganese superoxide dismutase (MnSOD Ala-9Val) and glutathione peroxidase (GPx1 Pro 198 Leu) gene polymorphisms in psoriasis. Arch Dermatol Res 2013; 306:253-8. [DOI: 10.1007/s00403-013-1427-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2013] [Revised: 10/28/2013] [Accepted: 10/30/2013] [Indexed: 10/26/2022]
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Ortak H, Demir S, Ateş Ö, Benli İ, Söğüt E, Sahin M. The role of MMP2 (-1306C>T) and TIMP2 (-418 G>C) promoter variants in age-related macular degeneration. Ophthalmic Genet 2013; 34:217-22. [PMID: 23536957 DOI: 10.3109/13816810.2013.781192] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
PURPOSE To investigate the possible association between the matrix metalloproteinase 2 (-1306C>T) (rs 243865) and tissue inhibitors of matrix metalloproteinase 2 (-418 G>C) (rs 8179090) polymorphisms and the risk of age-related macular degeneration. METHODS This case-controlled prospective study included 144 age-related macular degeneration patients and 172 control subjects. All subjects were screened for age, gender, hypertension (HT), diabetes (DM), and body mass index (BMI). Serum levels of high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), triglycerides (TG), total cholesterol (TC), and smoking were also determined. Genomic DNA was extracted from peripheral leukocytes from ethylenediaminetetraacetic acid anticoagulated blood. Genotyping of the MMP2 (-1306C>T) and TIMP2 (-418 G>C) polymorphisms was performed using real-time polymerase chain reaction. RESULTS Genotype distributions or allelic frequencies of MMP2 (-1306C>T) and TIMP2 (-418 G>C) did not significantly differ between patients with AMD and control subjects. Similarly, no significant differences in either genotype distributions or allelic frequencies of MMP2 (-1306C>T) and TIMP2 (-418 G>C) were found between dry and wet AMD. CONCLUSION MMP2 (-1306C>T) and TIMP2 (-418 G>C) promoter variants are unlikely to have a major role in age-related macular degeneration risk susceptibility.
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Ortak H, Söğüt E, Ateş Ö, Erkorkmaz Ü, Benli İ, Akbas A, Demir S, Özyurt H. Protective effect of paraoxonase 1 gene variant L55M in retinal vein occlusion. Mol Vis 2013; 19:486-xxx. [PMID: 23441121 PMCID: PMC3580965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2012] [Accepted: 02/21/2013] [Indexed: 12/02/2022] Open
Abstract
PURPOSE To determine if the paraoxonase 1 L55M and paraoxonase 1 Q192R gene polymorphisms have an effect on the risk of having a retinal vein occlusion (RVO). METHODS This case-control prospective study included 120 patients with RVO and 84 control subjects. All subjects were screened for age, gender, hypertension, diabetes, body mass index, fibrinogen, high-density lipoprotein cholesterol, low-density lipoprotein cholesterol, triglycerides, total cholesterol, and very low-density lipoprotein. Subjects were also questioned about their smoking habits. Genomic DNA was extracted from peripheral leukocytes from EDTA anticoagulated blood. Genotyping of the paraoxonase 1 L55M and paraoxonase 1 Q192R polymorphisms was performed using real-time PCR. RESULTS The frequency of the paraoxonase 1 (PON1) 55 LL genotype was significantly lower in patients with RVO than in the control subjects (28% versus 55%; p = 0.005). Logistic regression analyses were also conducted. After adjusting for gender, diabetes, hypertension, plasma fibrinogen levels, and high-density lipoprotein cholesterol, the lower LL genotype was found to be an independent predictor of RVO (β = 1.755; odds ratio = 5.783; p < 0.001; 95% confidence interval = 2.579-12.967). CONCLUSIONS Subjects with a lower frequency PON1 55 LL genotype had a higher risk of RVO. These results indicate that paraoxonase gene polymorphisms may be a possible risk factor for RVO. We suggest that the LL genotype may have a protective role in the pathogenesis of RVO in the Turkish population.
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Affiliation(s)
- Huseyin Ortak
- Gaziosmanpasa University Faculty of Medicine, Department of Ophthalmology, Tokat, Turkey
| | - Erkan Söğüt
- Gaziosmanpasa University Faculty of Medicine, Department of Biochemistry, Tokat, Turkey
| | - Ömer Ateş
- Gaziosmanpasa University Faculty of Medicine, Department of Medical Biology, Tokat, Turkey
| | - Ünal Erkorkmaz
- Gaziosmanpasa University Faculty of Medicine, Department of Biostatistics, Tokat, Turkey
| | - İsmail Benli
- Gaziosmanpasa University Faculty of Medicine, Department of Biochemistry, Tokat, Turkey
| | - Ali Akbas
- Gaziosmanpasa University Faculty of Medicine, Department of Biochemistry, Tokat, Turkey
| | - Selim Demir
- Gaziosmanpasa University Faculty of Medicine, Department of Ophthalmology, Tokat, Turkey
| | - Hüseyin Özyurt
- Gaziosmanpasa University Faculty of Medicine, Department of Biochemistry, Tokat, Turkey
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