Browsing by Author "Can S."

Now showing 1 - 8 of 8
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    Essential oil composition and antioxidant activities of alkanet (Alkanna tinctoria subsp. tinctoria)
    (2010) Ozer M.S.; Sarikurkcu C.; Tepe B.; Can S.
    This study is designed to examine the chemical composition and in vitro antioxidant activity of the hydrodistillated essential oil and the various extracts of alkanet (Alkanna tinctoria subsp. tinctoria). Gas chromatography (GC) and GC-mass spectrometry (GC-MS) analysis of the essential oil were resulted in the determination of 27 different compounds, representing 93.32% of the total oil. The major compounds detected in the oil, were pulegone (22.27%), 1,8-cineole (13.03%), α-terpinyl acetate (6.87%), and isophytol (6.83%), respectively. Antioxidant activities of the samples were determined by 4 different test systems namely β-carotene/linoleic acid, 1,1-diphenyl-2-picrylhydrazyl (DPPH), reducing power, and chelating effect. In all systems, essential oil showed the weakest activity profile. On the other hand, ethyl acetate and water extracts exhibited excellent antioxidant activities. As well as the antioxidant activities of the extracts, they were evaluated in terms of their total phenolic and flavonoid contents. In parallel to the experiments, ethyl acetate and water extracts were found to be rich-in these phytochemicals. © KoSFoST and Springer 2010.
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    Gastric emptying of solids and its relationship with microalbuminuria in children and adolescents with type 1 diabetes mellitus
    (2013) Ersoy B.; Sayit E.; Can S.; Urk V.; Batok D.; Polat M.
    Background: The aims of the present study were to determine the frequency of delayed gastric emptying in children and adolescents with type 1 diabetes mellitus (T1DM) and to investigate the relationship between gastric emptying rate and other contributing factors (e.g. serum HbA1c, duration of diabetes and microalbuminuria) in these patients. Methods: This was a clinical trial evaluating the rate of gastric emptying of solid meals in 33 children and adolescents with T1DM and in 26 healthy peers using a radionuclide method. Three consecutive overnight urine collections were used to calculate the albumin excretion rate. Results: There was no significant difference in the gastric half-emptying time (GE t1/2) between patients and controls (151.7±154.5 vs 109.8±60.5min, respectively; P=0.885) or the frequency of delayed gastric emptying (36.4% vs 30.8%, respectively; P=0.433). There was a moderately positive correlation between GE t1/2 and the duration of diabetes (r=0.380; P=0.029). There was no correlation between GE t1/2 and microalbumin levels in T1DM patients. In these patients, the body mass index standard deviation scores were significantly lower than in patients with normal gastric emptying (-0.13±0.87 vs 0.7±1.23, respectively; P=0.044). Conclusion: Progression of delayed gastric emptying is more likely to be related to a longer duration of diabetes than glycemic control in children and adolescents with T1DM. Patients with delayed gastric emptying are thinner compared with patients with a normal rate of gastric emptying; they may also be asymptomatic. © 2013 Wiley Publishing Asia Pty Ltd and Ruijin Hospital, Shanghai Jiaotong University School of Medicine.
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    Investigation of the role of stray cats for transmission of toxoplasmosis to humans and animals living in Izmir, Turkey
    (Journal of Infection in Developing Countries, 2021) Karakavuk M.; Can H.; Selim N.; Yesilsiraz B.; Atli E.; Sahar E.A.; Demir F.; Gül A.; Özdemir H.G.; Alan N.; Yalçin M.; Özkurt O.; Aras M.; Çelik T.; Can S.; Döskaya A.D.; Gürüz A.Y.; Döskaya M.
    Introduction: Toxoplasma gondii is a protozoan parasite that has a widespread distribution among mammalians and birds. One of the reasons for the high prevalence may be due to ingesting oocyst disseminated by stray cats' feces. In Turkey, most of the citizens are closely associated with stray cats and they love to pet and feed them on the streets. In this study, we aimed to determine the prevalence of T. gondii DNA in feces of stray cats living in Izmir, Turkey in order to identify the transmission potential to humans and other animals. Methodology: Feces and blood samples of 465 stray cats were investigated for the presence of T. gondii oocysts by microscopy and for the presence of T. gondii DNA by two real time PCR methods. Furthermore, serum samples were analyzed for anti-T. gondii IgG antibodies using an ELISA. Results: Oocysts were detected in 0.43% of the stray cats by microscopy. T. gondii DNA was detected in 14.37% of the stray cats' feces samples. The seroprevalence rate was 37.84%. In the feces and/or blood PCR positive group, 35.89% of them were seropositive. Among the 176 seropositive cats, T. gondii DNA was detected in feces of 27 cats (15.34%). Conclusions: This study first time showed the inter relation of T. gondii DNA in feces and blood samples and seropositivity. In sum, over 14% of the stray cats living outdoor may have an important role in transmission of toxoplasmosis to humans in Izmir as well as to other animals. © 2021 Journal of Infection in Developing Countries. All rights reserved.
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    Predictors of enhancing human physical attractiveness: Data from 93 countries
    (Elsevier Inc., 2022) Kowal M.; Sorokowski P.; Pisanski K.; Valentova J.V.; Varella M.A.C.; Frederick D.A.; Al-Shawaf L.; García F.E.; Giammusso I.; Gjoneska B.; Kozma L.; Otterbring T.; Papadatou-Pastou M.; Pfuhl G.; Stöckli S.; Studzinska A.; Toplu-Demirtaş E.; Touloumakos A.K.; Bakos B.E.; Batres C.; Bonneterre S.; Czamanski-Cohen J.; Dacanay J.C.; Deschrijver E.; Fisher M.L.; Grano C.; Grigoryev D.; Kačmár P.; Kozlov M.V.; Manunta E.; Massar K.; McFall J.P.; Mebarak M.; Miccoli M.R.; Milfont T.L.; Prokop P.; Aavik T.; Arriaga P.; Baiocco R.; Čeněk J.; Çetinkaya H.; Duyar I.; Guemaz F.; Ishii T.; Kamburidis J.A.; Khun-Inkeeree H.; Lidborg L.H.; Manor H.; Nussinson R.; Omar-Fauzee M.S.B.; Pazhoohi F.; Ponnet K.; Santos A.C.; Senyk O.; Spasovski O.; Vintila M.; Wang A.H.; Yoo G.; Zerhouni O.; Amin R.; Aquino S.; Boğa M.; Boussena M.; Can A.R.; Can S.; Castro R.; Chirumbolo A.; Çoker O.; Cornec C.; Dural S.; Eder S.J.; Moharrampour N.G.; Grassini S.; Hristova E.; Ikizer G.; Kervyn N.; Koyuncu M.; Kunisato Y.; Lins S.; Mandzyk T.; Mari S.; Mattiassi A.D.A.; Memisoglu-Sanli A.; Morelli M.; Novaes F.C.; Parise M.; Banai I.P.; Perun M.; Plohl N.; Sahli F.Z.; Šakan D.; Smojver-Azic S.; Solak Ç.; Söylemez S.; Toyama A.; Wlodarczyk A.; Yamada Y.; Abad-Villaverde B.; Afhami R.; Akello G.; Alami N.H.; Alma L.; Argyrides M.; Atamtürk D.; Burduli N.; Cardona S.; Carneiro J.; Castañeda A.; Chałatkiewicz I.; Chopik W.J.; Chubinidze D.; Conroy-Beam D.; Contreras-Garduño J.; da Silva D.R.; Don Y.B.; Donato S.; Dubrov D.; Duračková M.; Dutt S.; Ebimgbo S.O.; Estevan I.; Etchezahar E.; Fedor P.; Fekih-Romdhane F.; Frackowiak T.; Galasinska K.; Gargula Ł.; Gelbart B.; Yepes T.G.; Hamdaoui B.; Hromatko I.; Itibi S.N.; Jaforte L.; Janssen S.M.J.; Jovic M.; Kertechian K.S.; Khan F.; Kobylarek A.; Koso-Drljevic M.; Krasnodębska A.; Križanić V.; Landa-Blanco M.; Mailhos A.; Marot T.; Dorcic T.M.; Martinez-Banfi M.; Yusof M.R.; Mayorga-Lascano M.; Mikuličiūtė V.; Mišetić K.; Musil B.; Najmussaqib A.; Muthu K.N.; Natividade J.C.; Ndukaihe I.L.G.; Nyhus E.K.; Oberzaucher E.; Omar S.S.; Ostaszewski F.; Pacquing M.C.T.; Pagani A.F.; Park J.H.; Pirtskhalava E.; Reips U.-D.; Reyes M.E.S.; Röer J.P.; Şahin A.; Samekin A.; Sargautytė R.; Semenovskikh T.; Siepelmeyer H.; Singh S.; Sołtys A.; Sorokowska A.; Soto-López R.; Sultanova L.; Tamayo-Agudelo W.; Tan C.-S.; Topanova G.T.; Bulut M.T.; Trémolière B.; Tulyakul S.; Türkan B.N.; Urbanek A.; Volkodav T.; Walter K.V.; Yaakob M.F.M.; Zumárraga-Espinosa M.
    People across the world and throughout history have gone to great lengths to enhance their physical appearance. Evolutionary psychologists and ethologists have largely attempted to explain this phenomenon via mating preferences and strategies. Here, we test one of the most popular evolutionary hypotheses for beauty-enhancing behaviors, drawn from mating market and parasite stress perspectives, in a large cross-cultural sample. We also test hypotheses drawn from other influential and non-mutually exclusive theoretical frameworks, from biosocial role theory to a cultural media perspective. Survey data from 93,158 human participants across 93 countries provide evidence that behaviors such as applying makeup or using other cosmetics, hair grooming, clothing style, caring for body hygiene, and exercising or following a specific diet for the specific purpose of improving ones physical attractiveness, are universal. Indeed, 99% of participants reported spending >10 min a day performing beauty-enhancing behaviors. The results largely support evolutionary hypotheses: more time was spent enhancing beauty by women (almost 4 h a day, on average) than by men (3.6 h a day), by the youngest participants (and contrary to predictions, also the oldest), by those with a relatively more severe history of infectious diseases, and by participants currently dating compared to those in established relationships. The strongest predictor of attractiveness-enhancing behaviors was social media usage. Other predictors, in order of effect size, included adhering to traditional gender roles, residing in countries with less gender equality, considering oneself as highly attractive or, conversely, highly unattractive, TV watching time, higher socioeconomic status, right-wing political beliefs, a lower level of education, and personal individualistic attitudes. This study provides novel insight into universal beauty-enhancing behaviors by unifying evolutionary theory with several other complementary perspectives. © 2022 The Authors
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    Meta-analysis of the relationship between Toxoplasma gondii and schizophrenia
    (Polish Parasitological Society, 2022) Oncu-Oner T.; Can S.
    Toxoplasma gondii (T. gondii), which is an obligate intracellular protozoan parasite, could infect a wide range of hosts including humans. It infects approximately one-third of the entire human population. Infection with T. gondii can lead similar psychotic symptoms of schizophrenia. Starting from this information, numerous studies have revealed that maternal, acute and chronic T. gondii infections predispose to schizophrenia. The aim of this work was to evaluate the relationship between T. gondii and schizophrenia with a meta-analysis study using current data. 112 studies were reached using PubMed, Google Scholar and Council of Higher Education (YÖ̈K) Thesis Center databases. 15 studies which included a proportion of seropositive schizophrenia patients and controls were further examined in a meta-analysis. Among these studies, 13 of them showed a positive association between higher anti-T. gondii IgG level and patients with schizophrenia in the experimental groups whereas the remaining 2 studies showed a negative correlation. According to the random effects model, it was seen lower limit of 0.180 and upper limit of 0.490 with a standard error of 0.279 and a 95% confidence interval. The average effect size value was calculated as 0.335. This result having positive average effect size indicated that there was a positive association between T. gondii infection with a higher IgG level and the presence of schizophrenia. © 2022 Polish Parasitological Society.
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    Erratum: Correction to: Validation of the Short Version (TLS-15) of the Triangular Love Scale (TLS-45) Across 37 Languages (Archives of sexual behavior (2024) 53 2 (839-857))
    (2024) Kowal M.; Sorokowski P.; Dinić B.M.; Pisanski K.; Gjoneska B.; Frederick D.A.; Pfuhl G.; Milfont T.L.; Bode A.; Aguilar L.; García F.E.; Roberts S.C.; Abad-Villaverde B.; Kavčič T.; Miroshnik K.G.; Ndukaihe I.L.G.; Šafárová K.; Valentova J.V.; Aavik T.; Blackburn A.M.; Çetinkaya H.; Duyar I.; Guemaz F.; Ishii T.; Kačmár P.; Natividade J.C.; Nussinson R.; Omar-Fauzee M.S.B.; Pacquing M.C.T.; Ponnet K.; Wang A.H.; Yoo G.; Amin R.; Pirtskhalava E.; Afhami R.; Arvanitis A.; Duyar D.A.; Besson T.; Boussena M.; Can S.; Can A.R.; Carneiro J.; Castro R.; Chubinidze D.; Čunichina K.; Don Y.; Dural S.; Etchezahar E.; Fekih-Romdhane F.; Frackowiak T.; Moharrampour N.G.; Yepes T.G.; Grassini S.; Jovic M.; Kertechian K.S.; Khan F.; Kobylarek A.; Križanić V.; Lins S.; Mandzyk T.; Manunta E.; Martinac Dorčić T.; Muthu K.N.; Najmussaqib A.; Otterbring T.; Park J.H.; Pavela Banai I.; Perun M.; Reyes M.E.S.; Röer J.P.; Şahin A.; Sahli F.Z.; Šakan D.; Singh S.; Smojver-Azic S.; Söylemez S.; Spasovski O.; Studzinska A.; Toplu-Demirtas E.; Urbanek A.; Volkodav T.; Wlodarczyk A.; Yaakob M.F.M.Y.; Yusof M.R.; Zumárraga-Espinosa M.; Zupančič M.; Sternberg R.J.
    [No abstract available]
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    Validation of the Short Version (TLS-15) of the Triangular Love Scale (TLS-45) across 37 Languages
    (Springer, 2024) Kowal M.; Sorokowski P.; Dinić B.M.; Pisanski K.; Gjoneska B.; Frederick D.A.; Pfuhl G.; Milfont T.L.; Bode A.; Aguilar L.; García F.E.; Roberts S.C.; Abad-Villaverde B.; Kavčič T.; Miroshnik K.G.; Ndukaihe I.L.G.; Šafárová K.; Valentova J.V.; Aavik T.; Blackburn A.M.; Çetinkaya H.; Duyar I.; Guemaz F.; Ishii T.; Kačmár P.; Natividade J.C.; Nussinson R.; Omar-Fauzee M.S.B.; Pacquing M.C.T.; Ponnet K.; Wang A.H.; Yoo G.; Amin R.; Pirtskhalava E.; Afhami R.; Arvanitis A.; Duyar D.A.; Besson T.; Boussena M.; Can S.; Can A.R.; Carneiro J.; Castro R.; Chubinidze D.; Čunichina K.; Don Y.; Dural S.; Etchezahar E.; Fekih-Romdhane F.; Frackowiak T.; Moharrampour N.G.; Yepes T.G.; Grassini S.; Jovic M.; Kertechian K.S.; Khan F.; Kobylarek A.; Križanić V.; Lins S.; Mandzyk T.; Manunta E.; Martinac Dorčić T.; Muthu K.N.; Najmussaqib A.; Otterbring T.; Park J.H.; Pavela Banai I.; Perun M.; Reyes M.E.S.; Röer J.P.; Şahin A.; Sahli F.Z.; Šakan D.; Singh S.; Smojver-Azic S.; Söylemez S.; Spasovski O.; Studzinska A.; Toplu-Demirtas E.; Urbanek A.; Volkodav T.; Wlodarczyk A.; Yaakob M.F.M.Y.; Yusof M.R.; Zumárraga-Espinosa M.; Zupančič M.; Sternberg R.J.
    Love is a phenomenon that occurs across the world and affects many aspects of human life, including the choice of, and process of bonding with, a romantic partner. Thus, developing a reliable and valid measure of love experiences is crucial. One of the most popular tools to quantify love is Sternberg’s 45-item Triangular Love Scale (TLS-45), which measures three love components: intimacy, passion, and commitment. However, our literature review reveals that most studies (64%) use a broad variety of shortened versions of the TLS-45. Here, aiming to achieve scientific consensus and improve the reliability, comparability, and generalizability of results across studies, we developed a short version of the scale—the TLS-15—comprised of 15 items with 5-point, rather than 9-point, response scales. In Study 1 (N = 7,332), we re-analyzed secondary data from a large-scale multinational study that validated the original TLS-45 to establish whether the scale could be truncated. In Study 2 (N = 307), we provided evidence for the three-factor structure of the TLS-15 and its reliability. Study 3 (N = 413) confirmed convergent validity and test–retest stability of the TLS-15. Study 4 (N = 60,311) presented a large-scale validation across 37 linguistic versions of the TLS-15 on a cross-cultural sample spanning every continent of the globe. The overall results provide support for the reliability, validity, and cross-cultural invariance of the TLS-15, which can be used as a measure of love components—either separately or jointly as a three-factor measure. © The Author(s) 2023. corrected publication 2023.
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    Guide for Quality Control and Quality Assurance Tests in Image-guided Radiotherapy Systems; [Görüntü Kılavuzluğunda Radyoterapi Sistemlerinde Kalite Kontrol ve Kalite Güvencesi Raporu]
    (Istanbul Tip Fakultesi, 2024) Yedekçi Y.; Bakicierler G.; Sindir B.; Gündem E.; Kara E.; Can S.; Erdoğan T.; Gül O.V.; Özbay Ç.R.
    This report systematically addresses quality control and assurance tests aimed at enhancing the safety and efficacy of Image-Guided Radiation Therapy (IGRT). IGRT utilizes advanced imaging systems to accurately delineate tumor volumes, minimizing uncertainties caused by anatomical changes during treatment. The study encompasses quality control tests for 2D, 3D, and 4D imaging systems integrated with linear accelerators, as well as surface and respiratory tracking systems. The tests are categorized into three main groups: radiographic imaging systems, surface tracking systems, and respiratory tracking systems. The report details procedures and tolerance values for critical parameters such as geometric accuracy, image quality, and safety tests. Additionally, quality control methods for respiratory-gated radiation therapy systems and 4D-CBCT modules are presented. The report emphasizes the importance of standardizing quality control protocols to ensure the accurate and reliable implementation of IGRT and aims to serve as a guide for newly established clinics and medical physicists, providing a reference for developing and implementing their own quality control procedures. © 2024, Turkish Society for Radiation Oncology.