Browsing by Author "Özdemir G."

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    A whole genome screen for linkage in Turkish multiple sclerosis
    (Elsevier, 2003) Eraksoy M.; Kurtuncu M.; Akman-Demir G.; Kilinc M.; Gedizlioglu M.; Mirza M.; Anlar Ö.; Kutlu C.; Demirkiran M.; Idrisoglu H.A.; Compston A.; Sawcer S.; Tombul T.; Asker Ö.; Balkan S.; Seçkin D.; Aydin H.; Akman-Demir G.; Kiyat A.; Yapici Z.; Epçeliden T.; Çe P.; Goldenberg E.; Gültiken B.; Güvenç A.; Işik N.; Seleker T.; Idiman E.; Özakbaş S.; Irkeç C.; Nazlier B.; Forta H.; Seleker F.; Güner K.; Karabudak R.; Kilinç M.; Komsuoǧlu S.; Efendi H.; Mert M.; Mirza M.; Erdoǧan F.; Müngen B.; Bulut S.; Özer F.; Yayla V.; Petek-Balci B.; Saǧduyu A.; Sarica Y.; Demirkiran M.; Selçuki D.; Mavioǧlu H.; Siva A.; Altintaş A.; Saip S.; Sütlaş N.; Kuşçu Yandim D.; Tireli H.; Özalp K.; Türkoǧlu R.; Örken C.; Özmanoǧlu M.; Velioǧlu S.; Özdemir G.; Gücüyener D.; Özkan S.; Tunali G.; Turan F.; Utku U.; Turgut N.; Ümit S.; Us Ö.; Ince Günal D.; Ütkür Y.; Aluçlu U.; Yavaşoǧlu Ö.; Yücemen N.; Yücesan C.; Zadikoǧlu A.; Zorlu Y.
    Factors exerting recessive effects on susceptibility to complex traits are expected to be over-represented in communities having a higher frequency of consanguineous marriage. Multiple sclerosis, a typical complex trait, is relatively common in Turkey where cultural factors also determine a high rate of consanguineous marriage. Previous genetic studies of multiple sclerosis in Turkey have been confined to the search for associations with candidate genes. In order to exploit the special genetic features of the Turkish population, we performed a whole genome screen for linkage in 43 Turkish multiplex families employing 392 microsatellite markers. Two genomic regions where maximum lod score (MLS) values were suggestive of linkage were identified (chromosomes 13q and 18q23) along with a further 14 regions of potential linkage. Parametric analysis of these data using a recessive model, appropriate for populations with a high frequency of consanguinity, increased the LOD scores in four regions. © 2003 Elsevier B.V. All rights reserved.
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    Full-mouth disinfection effects on gingival fluid calprotectin, osteocalcin, and N-telopeptide of Type I collagen in severe periodontitis
    (Wiley-Blackwell, 2020) Afacan B.; Çınarcık S.; Gürkan A.; Özdemir G.; İlhan H.A.; Vural C.; Köse T.; Emingil G.
    Background: To compare the effects of full-mouth disinfection (FMD) and full-mouth ultrasonic debridement (FMUD) on clinical, microbiological and biochemical parameters with conventional quadrant-wise scaling and root planning (Q-SRP) in severe chronic periodontitis. Methods: In the present prospective randomized controlled clinical trial with three parallel arms (#NCT04038801), 60 chronic periodontitis patients were randomly assigned to three study groups by a consecutive number in ascending order: FMD (n = 20), FMUD (n = 20), and Q-SRP (n = 20). All measurements and treatments were performed by the same investigator. At baseline, gingival crevicular fluid (GCF) and subgingival plaque were collected and clinical periodontal parameters were recorded. Ultrasonic debridement was completed within 24 hours in FMD and FMUD groups. Chlorhexidine gluconate was used for FMD. Q-SRP was performed by hand instruments per quadrant at 1-week-intervals. Clinical measurements and sampling were repeated at 1, 3, and 6 months after treatment. Real-time PCR was used for quantitative analysis of Aggregatibacter actinomycetemcomitans, Porphyromonas gingivalis, Prevotella intermedia, Tannerella forsythia, Fusobacterium nucleatum, and total bacteria count. GCF Calprotectin, osteocalcin, and N-telopeptide of type I collagen (NTx) levels were analyzed by ELISA. The changes of GCF biomarker levels after treatment between groups were the primary outcomes. Results: No harm was observed. All treatment strategies resulted in significant improvements in all clinical parameters (P < 0.05), with no significant differences between study groups at all time-points (P ˃ 0.05). Aggregatibacter actinomycetemcomitans was significantly decreased in FMD compared to FMUD and Q-SRP at 6 months (P < 0.05). Although GCF NTx total amounts increased in all groups during the study period, this increase was less prominent in full-mouth groups at three time points after treatment (P < 0.05). Conclusions: Present results represent the short-term effects. Full-mouth treatment approaches offered limited beneficial effects on microbiological and biochemical parameters over quadrant-wise approach. All three treatment strategies can be recommended in the management of severe chronic periodontitis. © 2020 American Academy of Periodontology
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    The Definition of Sarcomeric and Non-Sarcomeric Gene Mutations in Hypertrophic Cardiomyopathy Patients: A Multicenter Diagnostic Study Across Türkiye
    (Turkish Society of Cardiology, 2023) Oktay V.; Tüfekçioğlu O.; Yılmaz D.Ç.; Onrat E.; Karabulut D.; Çelik M.; Balcıoğlu A.S.; Sucu M.M.; Özdemir G.; Kaya H.; Kış M.; Güven B.; Bağdatoğlu O.; Çağlar F.N.T.; Yüksel U.Ç.; Düzen İ.V.; Barutçu A.; Şimşir Ö.S.; Başarıcı İ.; Parspur A.; Dalgıç O.; Özlük F.Ö.A.; Evlice M.; Sağ S.; Deniz M.F.; Öcal A.; Gazi E.; Şen T.; Özdabakoğlu O.; Çakıcı N.B.; Bakır E.O.; Kunak A.Ü.; Çaylı G.; Taşdelen A.G.; Akşit E.; Çil Ş.U.; Onay H.
    Background: Hypertrophic cardiomyopathy is a common genetic heart disease and up to 40%-60% of patients have mutations in cardiac sarcomere protein genes. This genetic diagnosis study aimed to detect pathogenic or likely pathogenic sarcomeric and non-sarcomeric gene mutations and to confirm a final molecular diagnosis in patients diagnosed with hypertrophic cardiomyopathy. Methods: A total of 392 patients with hypertrophic cardiomyopathy were included in this nationwide multicenter study conducted at 23 centers across Türkiye. All samples were analyzed with a 17-gene hypertrophic cardiomyopathy panel using next-generation sequencing technology. The gene panel includes ACTC1, DES, FLNC, GLA, LAMP2, MYBPC3, MYH7, MYL2, MYL3, PLN, PRKAG2, PTPN11, TNNC1, TNNI3, TNNT2, TPM1, and TTR genes. Results: The next-generation sequencing panel identified positive genetic variants (variants of unknown significance, likely pathogenic or pathogenic) in 12 genes for 121 of 392 samples, including sarcomeric gene mutations in 30.4% (119/392) of samples tested, galactosidase alpha variants in 0.5% (2/392) of samples and TTR variant in 0.025% (1/392). The likely pathogenic or pathogenic variants identified in 69 (57.0%) of 121 positive samples yielded a confirmed molecular diagnosis. The diagnostic yield was 17.1% (15.8% for hypertrophic cardiomyopathy variants) for hypertrophic cardiomyopathy and hypertrophic cardiomyopathy phenocopies and 0.5% for Fabry disease. Conclusions: Our study showed that the distribution of genetic mutations, the prevalence of Fabry disease, and TTR amyloidosis in the Turkish population diagnosed with hypertrophic cardiomyopathy were similar to the other populations, but the percentage of sarcomeric gene mutations was slightly lower. Copyright@Author(s) - Available online at anatoljcardiol.com.
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    Acute Stroke Management in Türkiye: Intravenous Tissue Plasminogen Activator and Thrombectomy NöroTek: Türkiye Neurology Single Day Study; [Türkiye’de Akut İnme Yönetimi: IV tPA ve Trombektomi NöroTek: Türkiye Nöroloji Tek Gün Çalışması]
    (Turkish Neurosurgical Society, 2023) Topçuoğlu M.A.; Özdemir A.Ö.; Arsava E.M.; Güneş A.; Aykaç Ö.; Gencer E.S.; Çabalar M.; Yayla V.; Erdoğan H.A.; Erdoğan M.; Acar Z.Ö.; Giray S.; Kablan Y.; Tanrıverdi Z.; Tekan Ü.Y.; Asil T.; Akpınar Ç.K.; Yürekli V.A.; Acar B.; Şirin H.; Güler A.; Baydemir R.; Akçakoyunlu M.; Öcek L.; Çetiner M.; Nazlıel B.; Çağlayan H.B.; Ongun N.; Eren A.; Arlıer Z.; Cenikli U.; Gökçe M.; Bavli S.; Yaka E.; Özkul A.; Değirmenci B.; Aluçlu U.; Işıkay C.T.; Aslanbaba E.; Sorgun M.; Aytaç E.; Ay H.; Kunt R.; Şenadım S.; Ünsal Y.Ö.; Eşkut N.; Alioğlu Z.; Yılmaz A.; Genç H.; Yılmaz A.; Milanoğlu A.; Gürkaş E.; Değirmenci E.; Bektaş H.; İlgezdi İ.; Bilgiç A.B.; Akyol Ş.; Güngör L.; Kale N.; Çoban E.; Yeşilot N.; Ekizoğlu E.; Kizek Ö.; Kurşun O.; Yıldız Ö.K.; Bolayır A.; Kısabay A.; Baştan B.; Niflioğlu B.; Güven B.; Kaya D.; Afşar N.; Yazıcı D.; Toplutaş E.; Özkan E.; İlik F.; İnce F.B.; Büyükşerbetçi G.; Önder H.; Karadeli H.H.; Kozak H.H.; Demirbaş H.; Midi İ.; Aydın İ.; Epçeliden M.T.; Atmaca M.M.; Bakar M.; Şen M.; Turgut N.; Keskin O.; Akdoğan Ö.; Emre U.; Bilgili Ö.; Şirinocak P.B.; Yevgi R.; Akkaş S.Y.; Yoldaş T.; Duman T.; Özel T.; Ünal A.; Dora B.; Atasoy T.; Çınar B.P.; Demir T.; Demir T.; Can U.; Aslan Y.; Baş D.F.; Şener U.; Yılmaz Z.; Bozdoğan Z.; Özdemir G.; Krespi Y.; Öztürk Ş.
    Objective: To reveal the profile and practice in patients with acute stroke who received intravenous tissue plasminogen activator (IV tPA) and/or neuro-interventional therapy in Türkiye. Materials and Methods: On World Stroke Awareness Day, May 10, 2018, 1,790 patients hospitalized in 87 neurology units spread over 30 health regions were evaluated retrospectively and prospectively. Results: Intravenous tPA was administered to 12% of 859 cases of acute ischemic stroke in 45 units participating in the study. In the same period, 8.3% of the cases received neurointerventional treatment. The rate of good prognosis [modified Rankin score (mRS) 0–2] at discharge was 46% in 83 patients who received only IV tPA [age: 67 ± 12 years; National Institutes of Health Stroke Scale (NIHSS): 12 ± 6; hospital stay, 24 ± 29 days]; 35% in 51 patients who underwent thrombectomy (MT) alone (age: 64 ± 13 years; NIHSS: 14.1 ± 6.5; length of hospital stay, 33 ± 31 days), 19% in those who received combined treatment (age: 66 ± 14 years; NIHSS: 15.6 ± 5.4; length of hospital stay, 26 ± 35 days), and 56% of 695 patients who did not receive treatment for revascularization (age: 70 ± 13 years; NIHSS: 7.6 ± 7.2; length of hospital stay, 21 ± 28 days). The symptom-to-door time was 87 ± 53 minutes in the IV treatment group and 200 ± 26 minutes in the neurointerventional group. The average door-to-needle time was 66 ± 49 minutes in the IV tPA group. In the neurothrombectomy group, the door-to-groin time was 103 ± 90 minutes, and the TICI 2b-3 rate was 70.3%. In 103 patients who received IV tPA, the discharge mRS 0–2 was 41%, while the rate of mRS 0–1 was 28%. In 71 patients who underwent neurothrombectomy, the mRS 0–2 was 31% and mRS 0–1 was 18%. The door-to-groin time was approximately 30 minutes longer if IV tPA was received (125 ± 107 and 95 ± 83 minutes, respectively). Symptomatic bleeding rates were 4.8% in IV recipients, 17.6% among those who received only MT, and 15% in combined therapy. Globally, the hemorrhage rate was 6.8% in patients receiving IV tPA and 16.9% in MT. Conclusion: IV thrombolytic and neurointerventional treatment applications in acute ischemic stroke in Türkiye can provide the anticipated results. Heterogeneity has begun to be reduced in our country with the dissemination of the system indicated by the “Directive on Health Services to be Provided to Patients with Acute Stroke.”. © Copyright 2023 by the Turkish Neurological Society / Turkish Journal of Neurology published by Galenos Publishing House.
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    Salivary inflammatory burden in pre- and postmenopausal women: Associations with body mass index, patient-reported health, serum cytokines, and periodontal parameters
    (John Wiley and Sons Inc, 2024) Yakar N.; Bostanci N.; Özdemir G.; Atmaca H.; Türedi A.; Şahin Ç.; Köse T.; Emingil G.
    Background: The decline of estrogen levels during menopause impacts weight, mood, and overall health, both orally and systemically. This study assessed salivary levels of tumor necrosis factor alpha (TNF-α), interleukin-6 (IL-6), IL-10, and IL-7 in postmenopausal (PMW) and regularly menstruating premenopausal (RMPW) women, while considering serum cytokine levels, body mass index (BMI), periodontal health, and self-reported physical and emotional well-being. Methods: In this study, 75 PMW and 71 RMPW were included. Clinical and periodontal parameters were evaluated, and perceived health was assessed with the Women's Health Questionnaire (WHQ). Cytokine levels in both saliva and serum were quantified by enzyme-linked immunosorbent assay (ELISA). Covariate evaluations of salivary cytokines were conducted using hierarchical linear regression modeling. Results: Cytokines were detectable in saliva from 71 PMW and 67 RMPW. In the initial unadjusted model, IL-7, IL-10, and TNF-α exibited significant differences between RMPW and PMW. However, these differences became non-significant (p > 0.05) in the final model after adjusting for age, which implies a negligible effect of the investigated covariates on salivary cytokine levels when age was considered. Lower levels of IL-6 in PMW, which initially showed no significant difference, became borderline (p = 0.054) in the final model after adjusting for age. Conclusions: After adjusting for multiple factors, no significant difference was found in the salivary levels of the investigated cytokines between RMPW and PMW. Factors such as BMI, perceived health, serum cytokine levels, and periodontal parameters seem to minimally influence these levels in PMW. However, age may be a stronger confounding factor. © 2023 The Authors. Journal of Periodontology published by Wiley Periodicals LLC on behalf of American Academy of Periodontology.