Person: ABDALLAH, ANAS ABDELRAHıM SA
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Publication Open Access Investigation of Brain Impairment Using Diffusion-Weighted and Diffusion Tensor Magnetic Resonance Imaging in Experienced Healthy Divers.(2018-11-17) SEYITHANOĞLU, MEHMET HAKAN; ABDALLAH, ANAS ABDELRAHIM SA; Dündar, TOLGA TURAN; KITIŞ, SERKAN; ARALAŞMAK, AYŞE; Gündağ, Papaker; SASANI, H; SEYİTHANOĞLU, MEHMET HAKAN; ABDALLAH, ANAS ABDELRAHıM SA; DÜNDAR, TOLGA TURAN; KİTİŞ, SERKAN; ARALAŞMAK, AYŞE; GUNDAG, MELİHABackground: The aim of this study was to understand the changes of decompression illness in healthy divers by comparing diffusion-weighted (DWI) and diffusion tensor MRI findings among healthy professional divers and healthy non-divers with no history of diving. Material/Methods: A total of 26 people were recruited in this prospective study: 11 experienced divers with no history of neurological decompression disease (cohort) and 15 healthy non-divers (control). In all study subjects, we evaluated apparent diffusion coefficient (ADC) and type of diffusion tensor metric fractional anisotropy (FA) values of different brain locations (e.g., frontal and parieto-occipital white matter, hippocampus, globus pallidus, putamen, internal capsule, thalamus, cerebral peduncle, pons, cerebellum, and corpus callosum). Results: ADC values of hippocampus were high in divers but low in the control group; FA values of globus pallidus and putamen were lower in divers compared to the control group. DWI depicted possible changes due to hypoxia in different regions of the brain. Statistically significant differences in ADC values were found in hypoxia, particularly in the hippocampus (p=0.0002), while FA values in the globus pallidus and putamen were statistically significant (p=0.015 and p=0.031, respectively). We detected forgetfulness in 6 divers and deterioration in fine-motor skills in 2 divers (p=0.002 and p=0.17, respectively). All of them were examined using neuro-psychometric tests. Conclusions: Repeated hyperbaric exposure increases the risk of white matter damage in experienced healthy divers without neurological decompression illness. The hippocampus, globus pallidus, and putamen are the brain areas responsible for memory, learning, navigation, and fine-motor skills and are sensitive to repeated hyperbaric exposurePublication Metadata only Evaluating the p-STAT3 and PHH-3 Expressions in WHO Grade I Benign Meningiomas(2018-01-25) HATİBOĞLU, MUSTAFA AZİZ; ABDALLAH, ANAS ABDELRAHIM SA; TOSUNER, ZEYNEP; Akdağ, Halil; ÖZEK, ERDİNÇ; DÜNDAR, TOLGA TURAN; KİTİŞ, SERKAN; GUNDAG, MELİHA; SEYİTHANOĞLU, MEHMET HAKAN; TEKİN, ABDURRAHİM; HATİBOĞLU, MUSTAFA AZİZ; ABDALLAH, ANAS ABDELRAHıM SA; TOSUNER, ZEYNEP; ÖZEK, ERDİNÇ; DÜNDAR, TOLGA TURAN; KİTİŞ, SERKAN; GUNDAG, MELİHA; SEYİTHANOĞLU, MEHMET HAKAN; TEKİN, ABDURRAHIMPublication Metadata only Demographic Distribution and the Factors Affected Prognosis of Patients Who Diagnosis as Cerebral Aneurysm in a Single Center: Retrospective Evaluation of 398 Patients(2017-08-25) Asiltürk, Murad; ABDALLAH, ANAS ABDELRAHIM SA; Emel, Erhan; Güler Abdallah, Betül; ABDALLAH, ANAS ABDELRAHıM SAPublication Metadata only Factors Affecting the Surgical Outcomes of Multiple Cerebral Aneurysms: A Prospective Study(2017-08-25) Asiltürk, Murad; ABDALLAH, ANAS ABDELRAHIM SA; Güler Abdallah, Betül; Emel, Erhan; ABDALLAH, ANAS ABDELRAHıM SAPublication Open Access BRAF V600E mutation and BRAF VE1 immunoexpression profiles in different types of glioblastoma.(2018-08-01) TURNA, S; GEÇER, MELİN; Hatiboğlu, MUSTAFA AZİZ; ABDALLAH, ANAS ABDELRAHIM SA; TOSUNER, ZEYNEP; GEÇER, MELİN; HATİBOĞLU, MUSTAFA AZİZ; ABDALLAH, ANAS ABDELRAHıM SA; TURNA, SEVALPublication Metadata only Solitary osteochondroma arising from cervical spina bifida occulta.(2013-01-01T00:00:00Z) OFLUOGLU, AE; Abdallah, ANAS ABDELRAHIM SA; GOKCEDAG, A; ABDALLAH, ANAS ABDELRAHıM SAPublication Metadata only Factors affecting the surgical outcomes of tethered cord syndrome in adults: a retrospective study(2018-01-01) Abdallah, ANAS ABDELRAHIM SA; EMEL, Erhan; ASILTURK, Murad; SOFUOGLU, Ozden Erhan; ABDALLAH, ANAS ABDELRAHıM SAThis study aimed to find the factors that may affect the surgical outcomes of congenital tethered cord syndrome (TCS) in adults by evaluating the long-term surgical outcomes of 25 consecutive cases. Medical records of 79 TCS cases which underwent surgery in BakA +/- rkoy Research and Training Hospital for Neurology, Neurosurgery and Psychiatry (BRSHH), during an 11-year period from 2005 to 2015, were retrospectively reviewed. All adult cases (patient age > 18 years) were selected as the core sample used for this study. Twenty-five cases of TCSs were surgically treated. The sample consists of 16 female and nine male patients. The mean age of the sample is 30.1 +/- 10.3 years. Untethering was carried out in 88% of the patients. Sixty-four percent of the patients had good clinical outcomes at their last follow-up (after 73.8 months on average). The mean length of hospital stay was 4.76 +/- 2.88 days. In a multivariate regression model, laminectomy, bladder dysfunction when associated to muscular weakness, and long-term (> 6 months) symptoms were selected as the independent risk factors associated with poor or minimally improved (almost unchanged) surgical outcomes. When the urodynamic test showed overactive detrusor muscle, no improvement was recorded in postoperative urodynamic test. Laminoplasty (or hemilaminectomy), short-term (< 6 months) symptoms, patients without lipomas, and presentation with moderate or mild symptoms seem to be proper predictors for good surgical outcomes. Further prospective studies are necessary to investigate these findings systematically. Urodynamic study can be used as a predictive tool for close follow-up of asymptomatic adult patients involved with TCS.Publication Metadata only SPİNAL EKSTRADURAL ABSELERİN YÖNETİMİ: İKİ MERKEZİN SONUÇLARI(2017-04-02) ABDALLAH, ANAS ABDELRAHIM SA; Emel, Erhan; ÖZEK, ERDİNÇ; HATİBOĞLU, MUSTAFA AZİZ; TEKİN, ABDURRAHİM; Güneş, Müslüm; Asiltürk, Murad; Gündüz, Hasan Burak; Sofuoğlu, Özden Erhan; SEYİTHANOĞLU, MEHMET HAKAN; KİTİŞ, SERKAN; DÜNDAR, TOLGA TURAN; ABDALLAH, ANAS ABDELRAHıM SA; ÖZEK, ERDİNÇ; HATİBOĞLU, MUSTAFA AZİZ; TEKİN, ABDURRAHIM; SEYİTHANOĞLU, MEHMET HAKAN; KİTİŞ, SERKAN; DÜNDAR, TOLGA TURANPublication Metadata only İNTRADURAL SPİNAL ABSELERİN CERRAHİ SONUÇLARI: ÜÇ OLGULUK SERİ(2017-04-02) ABDALLAH, ANAS ABDELRAHIM SA; TEKİN, ABDURRAHİM; ÖZEK, ERDİNÇ; Emel, Erhan; Ovalıoğlu, Talat Cem; SEYİTHANOĞLU, MEHMET HAKAN; HATİBOĞLU, MUSTAFA AZİZ; KİTİŞ, SERKAN; GUNDAG, MELİHA; DÜNDAR, TOLGA TURAN; ABDALLAH, ANAS ABDELRAHıM SA; TEKİN, ABDURRAHIM; ÖZEK, ERDİNÇ; SEYİTHANOĞLU, MEHMET HAKAN; HATİBOĞLU, MUSTAFA AZİZ; KİTİŞ, SERKAN; GUNDAG, MELİHA; DÜNDAR, TOLGA TURANPublication Metadata only Factors Affecting the Surgical Outcomes of Primary Spinal Ependymomas: A Retrospective Study(2017-08-25) ABDALLAH, ANAS ABDELRAHIM SA; Asiltürk, Murad; Uysal, Mustafa Levent; Emel, Erhan; Sofuoğlu, Özden Erhan; Güneş, Müslüm; Gündüz, Hasan Burak; Ovalıoğlu, Talat Cem; Güler Abdallah, Betül; ABDALLAH, ANAS ABDELRAHıM SA