Researcher:
Baş, Ceren

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Undergraduate Student

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Ceren

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Baş

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Baş, Ceren

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2013 - 20183

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Researcher Of Publications: search.filters.isAuthorOfPublication.17491803-4cd9-4b42-9386-b1c0bc765a54

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    Evaluation of benign paroxysmal positional vertigo in American football players
    (Aves, 2018) N/A; N/A; Gökler, Ozan; Koçak, İlker; Aydoğan, Esra; Karanfil, Işıl; Baş, Ceren; Teaching Faculty; Doctor; Doctor; Undergraduate Student; Undergraduate Student; School of Medicine; N/A; N/A; School of Medicine; School of Medicine; N/A; Koç University Hospital; Koç University Hospital; N/A; N/A; 311179; N/A; N/A; N/A; N/A
    OBJECTIVES: The aim of this investigation was to evaluate the association between posterior channel benign paroxysmal positional vertigo (BPPV) and trauma that is frequently experienced by American football players. MATERIALS and METHODS: Participants wee classified into the following two groups: (1) a study group consisting of 63 male participants aged 18-30 years who had been playing American football for more than 2 years and (2) a control group consisting of 49 male participants aged 18-27 years with no history of otologic/vestibular disease or acute/chronic trauma. Trauma, age, total duration of playing Amer ican football, and weekly training hours of subjects in the study group were analyzed to deter mine any relationship with BPPV occurrence. We performed otologic, audiologic, and vestibular assessments of pure sound audiometry, tympanometry, tandem walking test with eyes open and eyes closed, Romberg, head shaking, roll, and Dix-Hallpike tests to all participants. RESULTS: A positive cor relation between the total year s of Amer ican football played and posterior channel BPPV frequency was observed in the study group. In addition, increasing weekly hours of training was shown to further increase the risk of BPPV. A total of 16 out of 63 athletes experienced BPPV, whereas none of the participants in the control group experienced BPPV. All participants completed the Vertigo Symptom Scale, which revealed that vertigo did not cause any significant negative impact on their training routine and activities of daily living. CONCLUSION: Our results indicate that the weekly training hours and total years of training with American football increase posterior channel BPPV frequency.
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    PublicationOpen Access
    Evaluation of benign paroxysmal positional vertigo in American football players
    (Aves, 2018) Gökler, Ozan; Koçak, İlker; Aydoğan, Esra; Karanfil, Işıl; Baş, Ceren; Teaching Faculty; Doctor; Koç University Hospital
    Objectives: the aim of this investigation was to evaluate the association between posterior channel benign paroxysmal positional vertigo (BPPV) and trauma that is frequently experienced by American football players. Materials and methods: participants wee classified into the following two groups: (1) a study group consisting of 63 male participants aged 18-30 years who had been playing American football for more than 2 years and (2) a control group consisting of 49 male participants aged 18-27 years with no history of otologic/vestibular disease or acute/chronic trauma. Trauma, age, total duration of playing American football, and weekly training hours of subjects in the study group were analyzed to deter mine any relationship with BPPV occurrence. We performed otologic, audiologic, and vestibular assessments of pure sound audiometry, tympanometry, tandem walking test with eyes open and eyes closed, Romberg, head shaking, roll, and Dix-Hallpike tests to all participants. RESULTS: A positive cor relation between the total year s of American football played and posterior channel BPPV frequency was observed in the study group. In addition, increasing weekly hours of training was shown to further increase the risk of BPPV. A total of 16 out of 63 athletes experienced BPPV, whereas none of the participants in the control group experienced BPPV. All participants completed the Vertigo Symptom Scale, which revealed that vertigo did not cause any significant negative impact on their training routine and activities of daily living. Conclusion: our results indicate that the weekly training hours and total years of training with American football increase posterior channel BPPV frequency.
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    PublicationOpen Access
    Shear stress-induced improvement of red blood cell deformability
    (IOS Press, 2013) Meiselman, Herbert J.; Meram, Ece; Yılmaz, Bahar Dikmen; Baş, Ceren; Ataç, Nazlı; Yalçın, Özlem; Başkurt, Oğuz Kerim; Faculty Member; Researcher; School of Medicine; N/A; N/A; N/A; N/A; 218440; 2389
    Classically, it is known that red blood cell (RBC) deformability is determined by the geometric and material properties of these cells. Experimental evidence accumulated during the last decade has introduced the concept of active regulation of RBC deformability. This regulation is mainly related to altered associations between membrane skeletal proteins and integral proteins, with the latter serving to anchor the skeleton to the lipid matrix. It has been hypothesized that shear stress induces alterations of RBC deformability: the current study investigated the dynamics of the transient improvement in deformability induced by shear stress at physiologically-relevant levels. RBC were exposed to various levels of shear stress (SS) in a Couette type shearing system that is part of an ektacytometer, thus permitting the changes in RBC deformability during the application of SS to be monitored. Initial studies showed that there is an increase in deformability of the RBC subjected to SS in the range of 5–20 Pa, with kinetics characterized by time constants of a few seconds. Such improvement in deformability, expressed by an elongation index (EI), was faster with higher levels of SS and hence yielded shorter time constants: absolute values of EI increased by 3–8% of the starting level. Upon the removal of the shear stress, this response by RBC was reversible with a slower time course compared to the increase in EI during application of SS. Increased calcium concentration in the RBC suspending medium prevented the improvement of deformability. It is suggested that the improvement of RBC deformability by shear forces may have significant effects on blood flow dynamics, at least in tissues supplied by blood vessels with impaired vasomotor reserve, and may therefore serve as a compensating mechanism for the maintenance of adequate microcirculatory perfusion.