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Sabur H, Arslan N, Kabatas EU, Acar M. Effects of full-thickness wedge resection on ocular surface and in vivo confocal microscopy findings in floppy eyelid syndrome patients. Eur J Ophthalmol 2024:11206721241233623. [PMID: 38378008 DOI: 10.1177/11206721241233623] [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: 02/22/2024]
Abstract
OBJECTIVE To evaluate the effect of full-thickness wedge resection (FTWR) on ocular surface and in vivo confocal microscopy (IVCM) findings in patients with floppy eyelid syndrome (FES). METHODS The study included two groups: a surgical treatment (ST) group (26 eyes) consisting of patients who underwent FTWR surgery, and a conservative treatment (CT) group (30 eyes). Pre-treatment and post-treatment ocular surface disease index (OSDI), tear break-up time (TBUT), corneal fluorescein staining (CFS), IVCM findings along with the body mass index (BMI), FES grade, the presence and the treatment of obstructive sleep apnea syndrome (OSAS) were recorded and compared between the groups. RESULTS The groups were comparable in terms of BMI, FES grade, and OSAS data. After six months, TBUT in the ST group significantly increased to 12.92 ± 1.15, compared to 8.10 ± 1.60 in the CT group (p = 0.000). The CFS and OSDI scores were significantly lower in the ST group (0.15 ± 0.37, 18.0 ± 8.3, respectively) compared to the CT group (0.90 ± 0.61, 27.3 ± 9.3, respectively) (p = 0.000). IVCM analysis revealed a significant decrease in dendritic cell count (ST: 22.0 ± 12.4, CT: 39.5 ± 15.1, p = 0.000) and nerve tortuosity (ST: 1.38 ± 0.64, CT: 2.00 ± 0.59, p = 0.000), with a significant increase in total nerve density (ST: 4.27 ± 0.83, CT: 3.57 ± 0.90, p = 0.002) in the ST group compared to the CT group after six months. CONCLUSION In our retrospective cohort, FTWR surgery was shown to be an effective and reliable surgical treatment for FES, improving both ocular surface and IVCM findings. Patients with moderate to severe stages of FES not responding to conservative treatment may benefit from eyelid tightening.
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Affiliation(s)
- Huri Sabur
- Department of Ophthalmology, Dışkapı Yıldırım Beyazıt Training and Research Hospital, University of Health Sciences, Ankara, Turkey
| | - Nese Arslan
- Department of Ophthalmology, Dışkapı Yıldırım Beyazıt Training and Research Hospital, University of Health Sciences, Ankara, Turkey
| | - Emrah Utku Kabatas
- Department of Ophthalmology, Dışkapı Yıldırım Beyazıt Training and Research Hospital, University of Health Sciences, Ankara, Turkey
| | - Mutlu Acar
- Department of Ophthalmology, Yuksek Ihtisas University, Liv Hospital, Ankara, Turkey
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Arslan N, Kocamis SI, Bilgic AA, Acar M, Kesimal B. Evaluation of dry eye disease and corneal epithelial mapping in patients with lower eyelid ectropion. Int Ophthalmol 2024; 44:18. [PMID: 38324126 DOI: 10.1007/s10792-024-02966-5] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Accepted: 12/04/2023] [Indexed: 02/08/2024]
Abstract
PURPOSE To evaluate the corneal epithelial mapping, ocular surface parameters and their relationship with each other in lower eyelid ectropion patients according to severity. METHODS This retrospective study included 48 lower eyelid ectropion patients and 63 healthy individuals as control group. Ocular surface and tear functions were evaluated with ocular surface staining score, tear film break-up time (BUT), non-invasive tear break-up time (NIBUT) and ocular surface disease index (OSDI). Meibography scores and corneal epithelial thickness (CET) mapping were evaluated. The lower eyelid ectropion was classified and divided into subgroups as follows: mild, moderate and severe. RESULTS There was no significant differences between the groups for age and gender. Compared to controls, CET was significantly thinner at inferior (p = 0.047) and inferior nasal quadrants (p = 0.023) in the ectropion patients. Lower BUT and NIBUT, higher OSDI scores and higher ocular surface staining were observed in the ectropion patients. In the subgroups determined according to the severity of ectropion, ocular surface damage was found to be significantly higher as the severity of ectropion increased (p < 0.05). CONCLUSION Patients with lower eyelid ectropion had worse ocular surface findings and more ocular complaints. Furthermore, the inferior and inferior nasal CETs were thinner in patients with lower ectropion.
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Affiliation(s)
- Nese Arslan
- Department of Ophthalmology, Diskapi Yildirim Beyazit Training and Research Hospital, Ankara, Turkey
| | - Sucattin Ilker Kocamis
- Department of Ophthalmology, Diskapi Yildirim Beyazit Training and Research Hospital, Ankara, Turkey
| | - Ahmet Alp Bilgic
- Department of Ophthalmology, Diskapi Yildirim Beyazit Training and Research Hospital, Ankara, Turkey.
| | - Mutlu Acar
- Department of Ophthalmology, Diskapi Yildirim Beyazit Training and Research Hospital, Ankara, Turkey
| | - Bedia Kesimal
- Department of Ophthalmology, Diskapi Yildirim Beyazit Training and Research Hospital, Ankara, Turkey
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Sabur H, Acar M. Dexpanthenol/sodium hyaluronate eye drops for corneal epithelial healing following corneal cross-linking in patients with keratoconus. Int Ophthalmol 2023; 43:3461-3469. [PMID: 37306832 DOI: 10.1007/s10792-023-02751-w] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 05/21/2023] [Indexed: 06/13/2023]
Abstract
PURPOSE To evaluate the effect of dexpanthenol 2%/sodium hyaluronate 0.15% eye drops on corneal epithelial healing and corneal microstructural changes following corneal cross-linking (CXL) in patients with keratoconus. METHODS The study included 42 eyes of 21 patients with keratoconus who underwent CXL on both eyes. One eye of each patient was instilled dexpanthenol 2%/sodium hyaluronate 0.15% eye drops (DP/SH group) and the fellow eye was instilled unpreserved sodium hyaluronate 0.15% eye drops (SH group). The epithelial healing process was assessed every day until complete reepithelialization was achieved. The in vivo confocal microscopy (IVCM) findings were also recorded. RESULTS The mean epithelial defect size 48.6 ± 6.7 mm2 for the DP/SH group and 48.2 ± 5.3 mm2 for the SH group. Complete reepithelialization was seen after 2.24 ± 0.44 days (range 2-4 days) in the DP/SH group and 3.43 ± 0.60 days (3 to 5 days) in the SH group. Posterior keratocyte density and endothelial cell density were similar in both groups. The mean subbasal nerve plexus density was significantly higher in the DP/SH group (postoperative 1 month: 1.13 ± 1.51, 3 months: 3.53 ± 2.55, 6 months: 7.07 ± 1.42) compared to the SH group (postoperative 1 month: 0.87 ± 1.43, 3 months: 2.89 ± 2.62, 6 months 6.33 ± 1.29). The DP/SH group revealed faster subbasal nerve regeneration and less edema compared to the SH group. CONCLUSION Dexpanthenol 2%/sodium hyaluronate 0.15% eye drops were effective and safe for corneal epithelial healing, and promoted faster corneal reepithelialization, nerve regeneration, and keratocyte repopulation with reduced corneal edema compared to sodium hyaluronate eye drops.
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Affiliation(s)
- Huri Sabur
- Department of Ophthalmology, University of Health Sciences, Dışkapı Yıldırım Beyazıt Training and Research Hospital, Ankara, Turkey.
| | - Mutlu Acar
- Associate Professor of Ophthalmology, University of Health Sciences, Dışkapı Yıldırım Beyazıt Training and Research Hospital, Ankara, Turkey
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Arslan N, Bahar A, Acar M, Kosker M, Kabatas N, Gurdal C. The results of Muller Muscle Conjunctival Resection versus Levator Advancement for mild to moderate ptosis. Rom J Ophthalmol 2023; 67:128-133. [PMID: 37522026 PMCID: PMC10385713 DOI: 10.22336/rjo.2023.23] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/19/2023] [Indexed: 08/01/2023] Open
Abstract
Purpose: To compare the surgical outcomes of Muller muscle conjunctival resection (MMCR) and levator advancement (LA) in patients with mild to moderate blepharoptosis. Methods: A retrospective review of patients who underwent surgery for mild to moderate ptosis between 2015 and 2020 was performed. The degree of ptosis was graded based on the amount of upper eyelid drooping: mild ≤ 2 mm and moderate < 4 mm. Surgical success was defined as post-operative marginal reflex distance 1 (MRD1) ≥ 4.0 and ≤ 5.0 mm, and a satisfactory eyelid contour. Results: A total of 82 eyes of 65 patients underwent ptosis repair surgeries. MMCR was performed in 48 eyes and LA in 34 eyes. Under-correction was detected in 8.3% and 11.8% of the patients in MMCR group and LA group respectively. There was no patient with over-correction in the MMCR group postoperatively, 3 patients in the LA group had over-correction (0% vs. 8.8% respectively). The success rate in our study was found to be 91.7% in the MMCR group and 72.2% in the LA group. Conclusions: The MMCR and LA procedures are effective approaches in treating patients with mild to moderate eyelid ptosis in our population. Each procedure had its superiority in selected groups of patients. However, the complication rate and duration of surgery were found to be lower in MMCR group. Abbreviations: LA = Levator Advancement, LF = Levator Function, MMCR = Muller Muscle Conjunctival Resection, MRD 1 = Marginal Reflex Distance.
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Affiliation(s)
- Nese Arslan
- Department of Ophtalmology, Diskapi Yıldırım Beyazıt Training and Research Hospital, Ankara, Turkey
| | - Alperen Bahar
- Department of Ophtalmology, Diskapi Yıldırım Beyazıt Training and Research Hospital, Ankara, Turkey
| | - Mutlu Acar
- Department of Ophtalmology, Diskapi Yıldırım Beyazıt Training and Research Hospital, Ankara, Turkey
| | | | - Naciye Kabatas
- Department of Ophtalmology, Diskapi Yıldırım Beyazıt Training and Research Hospital, Ankara, Turkey
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Bilgic AA, Sabur H, Acar M, Canpolat F. Effects of lipid-containing eye drops on the ocular surface and in vivo confocal microscopy findings in patients using systemic isotretinoin. Cutan Ocul Toxicol 2023; 42:25-31. [PMID: 36635986 DOI: 10.1080/15569527.2023.2166523] [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: 01/14/2023]
Abstract
OBJECTIVE To evaluate the effects of lipid-containing Rohto Dry Aid eye drops and sodium hyaluronate eye drops on the ocular surface and in vivo confocal microscopy (IVCM) findings in patients using systemic isotretinoin. METHODS This retrospective study included 71 patients using systemic isotretinoin for acne vulgaris. Ocular surface and tear functions were evaluated with the tear break-up time (TBUT), corneal fluorescein staining (CFS), and the ocular surface disease index questionnaire (OSDI). Meibography was used for the staging of Meibomian gland dysfunction (MGD) while IVCM was used for the analysis of corneal micro-structural changes. The data of 36 patients using Rohto Dry Aid (the Rohto group) and 35 patients using sodium hyaluronate (the SH group) were recorded. Pre-treatment, first month and third month data were analyzed. RESULTS Longer TBUT, lower OSDI score, and less CFS were observed in the first and third months after treatment in the Rohto group (p < 0.001). There was no significant change in TBUT and CFS in the first month (p > 0.05) in the SH group (p < 0.05) but lower TBUT and more CFS were observed in the third month. There was no significant change in the OSDI score in the SH group. There was a significant decrease in dendritic cells, activated keratocytes, and nerve tortuosity with IVCM in both groups. However, no significant difference was found between the two groups. CONCLUSION Rohto Dry Aid, with its support of the lipid layer, is an effective and safe treatment agent that can improve both ocular surface and IVCM findings in evaporative dry eye cases with MGD.
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Affiliation(s)
- Ahmet Alp Bilgic
- Department of Ophthalmology, Ankara Diskapi Yildirim Beyazit Training and Research Hospital, Ankara, Turkey
| | - Huri Sabur
- Department of Ophthalmology, Ankara Diskapi Yildirim Beyazit Training and Research Hospital, Ankara, Turkey
| | - Mutlu Acar
- Department of Ophthalmology, Ankara Diskapi Yildirim Beyazit Training and Research Hospital, Ankara, Turkey
| | - Filiz Canpolat
- Department of Dermatology, Ankara Diskapi Yildirim Beyazit Training and Research Hospital, Ankara, Turkey
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Acar M, Sabur H, Arslan N. Ocular surface and in vivo confocal microscopic findings in patients with active tyhroid eye disease treated with glucocorticoids. Eur J Ophthalmol 2023; 33:1354-1360. [PMID: 36734075 DOI: 10.1177/11206721231155209] [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: 02/04/2023]
Abstract
OBJECTIVES To evaluate the effect of treatment with high-dose glucocorticoids (HDG) on ocular surface parameters and in vivo confocal microscopy (IVCM) findings in patients with active thyroid eye disease (TED). METHODS This study included 15 active TED patients treated with a cumulative HDG dose of 4.5g (500 mg and then 250 mg for 6 weeks each). Disease activity was assessed by the clinical activity score (CAS), Graves' Orbitopathy-specific Quality of Life (GO-QoL) questionnaire, ocular surface disease index (OSDI), tear break-up time(T-BUT), ocular surface staining and IVCM. RESULTS The mean follow-up time was 48.6 months. The treatment resulted in a significant improvement in the T-BUT, ocular surface staining values. In comparison to the baseline, a notable reduction in CAS, OSDI and an increase in GO-QoL were seen after one year. IVCM showed a significant decrease in the number of dendritic cells, activated keratocytes, the degree of tortuosity, there was also a significant increase in the number of basal epithelial cells and total nerves over one-year period. All of those changes remained stable during the follow-up period. CONCLUSION HDG treatment results in a sustained decrease in corneal inflammatory cells, an increase in tear film stability, and an improvement in disease symptoms and QoL scores for up to 4 years.
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Affiliation(s)
- Mutlu Acar
- Department of Ophthalmology, University of Health Sciences, 146992Ankara Diskapi Yildirim Beyazit Training and Research Hospital, 06110, Ankara, Turkey
| | - Huri Sabur
- Department of Ophthalmology, University of Health Sciences, 146992Ankara Diskapi Yildirim Beyazit Training and Research Hospital, 06110, Ankara, Turkey
| | - Neşe Arslan
- Department of Ophthalmology, University of Health Sciences, 146992Ankara Diskapi Yildirim Beyazit Training and Research Hospital, 06110, Ankara, Turkey
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Arslan N, Kocamış Sİ, Sabur H, Acar M. Evaluation of the Effect of Dermatochalasis and Upper Eyelid Blepharoplasty Surgery on Corneal Epithelial Thickness Alterations. Aesthetic Plast Surg 2022; 47:647-651. [PMID: 36216918 DOI: 10.1007/s00266-022-03131-y] [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] [Received: 08/29/2022] [Accepted: 09/25/2022] [Indexed: 11/30/2022]
Abstract
BACKGROUND The aim of this study was to assess the effect of different grades of dermatochalasis (DC) and upper eyelid blepharoplasty (UEB) surgery on corneal epithelial thickness (CET), objectively using anterior segment-optical coherence tomography (AS-OCT) measurements. METHODS 90 eyes of patients with DC were divided into three groups according to the severity of the DC. Forty-one eyes of age and sex-matched patients without DC were randomly selected as the control group. The study did not include patients with more than 2 D of spherical refractive error and more than 1.5 D of astigmatism, a history of previous eyelid surgery, ocular surface disease, contact lens use, and ophthalmic eye drop use. CET measurements of all the patients were performed with an AS-OCT (RTVue-XR, Optovue Inc., USA). RESULTS There were statistically significant differences in the CET of the superior, superonasal, superotemporal, inferotemporal, and temporal sectors between the DC and control groups (p = 0.001, p = 0.02, p = 0.03, p = 0.02, p = 0.04, respectively). While there were no differences in CET among the sectors of the control group, there was a difference in CET among some sectors of the DC group. When the DC group was subdivided by severity, there was no difference between subgroups for CET across all sectors both preoperatively and postoperatively. In the measurements made 6 months after UEB surgery, the CET in all sectors increased statistically significantly compared to those measured in the preoperative period. CONCLUSION This study revealed that DC reshaped the corneal epithelium and UEB surgery restored this remodeling 6 months after surgery. LEVEL OF EVIDENCE III This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .
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Affiliation(s)
- Neşe Arslan
- Ophthalmology Department, Dışkapı Yıldırım Beyazıt Training and Research Hospital, University of Health Sciences, Ankara, Turkey
| | - Sücattin İlker Kocamış
- Ophthalmology Department, Dışkapı Yıldırım Beyazıt Training and Research Hospital, University of Health Sciences, Ankara, Turkey.
| | - Huri Sabur
- Ophthalmology Department, Dışkapı Yıldırım Beyazıt Training and Research Hospital, University of Health Sciences, Ankara, Turkey
| | - Mutlu Acar
- Ophthalmology Department, Dışkapı Yıldırım Beyazıt Training and Research Hospital, University of Health Sciences, Ankara, Turkey
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Meyer E, Kruglov D, Krivic M, Tanveer M, Argaez-Ramirez R, Zhang Y, Briseno Ojeda A, Smirnova K, Alekseev K, Safari Mugisho M, Cimbili B, Farid N, Dang Y, Shahid M, Ensan M, Banar J, Bao H, Matters-Kammerer M, Gustavsson U, Demuynck F, Zwick T, Acar M, Fager C, van der Heijden M, Ivashina M, Caratelli D, Hasselblad M, Ulusoy C, Smolders A, Eriksson K, Johannson M, Maaskant R, Quay R, Floriot D, Bao M, Bronckers L, Fridén J, van Beurden M, de Hon B, Kolitsidas C, Blanco D, Willems F, Eriksson T, Filippi A, Ponzini F, Johannsen U. The state of the art in beyond 5G distributed massive multiple-input multiple-output communication system solutions. Open Res Eur 2022; 2:106. [PMID: 37982077 PMCID: PMC10654493 DOI: 10.12688/openreseurope.14501.1] [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] [Figures] [Subscribe] [Scholar Register] [Accepted: 07/25/2022] [Indexed: 11/21/2023]
Abstract
Beyond fifth generation (5G) communication systems aim towards data rates in the tera bits per second range, with improved and flexible coverage options, introducing many new technological challenges in the fields of network architecture, signal pro- cessing, and radio frequency front-ends. One option is to move towards cell-free, or distributed massive Multiple-Input Multiple-Output (MIMO) network architectures and highly integrated front-end solutions. This paper presents an outlook on be- yond 5G distributed massive MIMO communication systems, the signal processing, characterisation and simulation challenges, and an overview of the state of the art in millimetre wave antennas and electronics.
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Affiliation(s)
- E. Meyer
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - D. Kruglov
- Chalmers University of Technology, Chalmersplatsen 4, 412 96 Göteborg, Sweden
| | - M. Krivic
- Keysight Technologies, Kortrijksesteenweg 1093B, 9051 Gent, Belgium
| | - M. Tanveer
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - R. Argaez-Ramirez
- Chalmers University of Technology, Chalmersplatsen 4, 412 96 Göteborg, Sweden
| | - Y. Zhang
- Chalmers University of Technology, Chalmersplatsen 4, 412 96 Göteborg, Sweden
| | | | - K. Smirnova
- Karlsruhe Institute of Technology, 6131 Karlsruhe, Germany
| | - K. Alekseev
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - M. Safari Mugisho
- Fraunhofer Institute for Applied Solid State Physics, IAF, Tullastraße 72, 79108 Freiburg, Germany
| | - B. Cimbili
- Fraunhofer Institute for Applied Solid State Physics, IAF, Tullastraße 72, 79108 Freiburg, Germany
| | - N. Farid
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - Y. Dang
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - M. Shahid
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - M. Ensan
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - J. Banar
- Chalmers University of Technology, Chalmersplatsen 4, 412 96 Göteborg, Sweden
| | - H. Bao
- Chalmers University of Technology, Chalmersplatsen 4, 412 96 Göteborg, Sweden
| | - M. Matters-Kammerer
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - U. Gustavsson
- Ericsson AB, Lindholmspiren 11, 417 56 Göteborg, Sweden
| | - F. Demuynck
- Keysight Technologies, Kortrijksesteenweg 1093B, 9051 Gent, Belgium
| | - T. Zwick
- Karlsruhe Institute of Technology, 6131 Karlsruhe, Germany
| | - M. Acar
- NXP Semiconductors, High Tech Campus 60, 5656 AG Eindhoven, The Netherlands
| | - C. Fager
- Chalmers University of Technology, Chalmersplatsen 4, 412 96 Göteborg, Sweden
| | - M. van der Heijden
- NXP Semiconductors, High Tech Campus 60, 5656 AG Eindhoven, The Netherlands
| | - M. Ivashina
- Chalmers University of Technology, Chalmersplatsen 4, 412 96 Göteborg, Sweden
| | - D. Caratelli
- The Antenna Company, High Tech Campus 29, 5656 AE Eindhoven, The Netherlands
| | - M. Hasselblad
- Gapwaves, Nellickevagen 22, 412 63 Gothenburg, Sweden
| | - C. Ulusoy
- Karlsruhe Institute of Technology, 6131 Karlsruhe, Germany
| | - A.B. Smolders
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - K. Eriksson
- Ericsson AB, Lindholmspiren 11, 417 56 Göteborg, Sweden
| | - M. Johannson
- Ericsson AB, Lindholmspiren 11, 417 56 Göteborg, Sweden
| | - R. Maaskant
- Chalmers University of Technology, Chalmersplatsen 4, 412 96 Göteborg, Sweden
| | - R. Quay
- Fraunhofer Institute for Applied Solid State Physics, IAF, Tullastraße 72, 79108 Freiburg, Germany
| | - D. Floriot
- United Monolithic Semiconductors SAS, Bâtiment Charmille, Mosaic parc de Courtaboeuf, 10 avenue du Québec, 91140, Villebon-sur-Yvette, France
| | - M. Bao
- Ericsson AB, Lindholmspiren 11, 417 56 Göteborg, Sweden
| | - L.A. Bronckers
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - J. Fridén
- Ericsson AB, Lindholmspiren 11, 417 56 Göteborg, Sweden
| | - M.C. van Beurden
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - B.P. de Hon
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - C. Kolitsidas
- Ericsson AB, Lindholmspiren 11, 417 56 Göteborg, Sweden
| | - D. Blanco
- Ericsson AB, Lindholmspiren 11, 417 56 Göteborg, Sweden
| | - F.M.J. Willems
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - T. Eriksson
- Chalmers University of Technology, Chalmersplatsen 4, 412 96 Göteborg, Sweden
| | - A. Filippi
- NXP Semiconductors, High Tech Campus 60, 5656 AG Eindhoven, The Netherlands
| | - F. Ponzini
- Ericsson Telecomunicazioni SpA, Via Anagnina 203, 00118 Rome, Italy
| | - U. Johannsen
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
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Yegit CY, Ergenekon P, Yanaz M, Guliyeva A, Kalyoncu M, Meral O, Selcuk M, Taştan G, Uzunoglu B, Ozturk N, Toktas F, Atas A, Kara H, Oruc Y, Acar M, Collak A, Bal N, Gedik O, Dogan R, Tan EG, Kafi HM, Karasu N, Ayhan Y, Yumusakhuylu A, Sakallı AK, Cakır E, Girit S, Gokdemir Y, Eralp EE, Ata P, Ciprut A, Karakoc F, Karadag B. P149 The association between the cumulative dose of aminoglycoside exposure and hearing loss in children with cystic fibrosis. J Cyst Fibros 2022. [DOI: 10.1016/s1569-1993(22)00480-5] [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: 10/18/2022]
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Uçakhan ÖÖ, Taşındı E, Toker E, Çiftçi F, Kurna SA, Acar M, Özçelik F, Çelebi ARC, Yıldız HE, Akova YA, Öncü ES, Özbek Z, Tuncer Z, Kocabeyoğlu S, Şeker B, Kaya D, Barakat M. Correction to: Clinical Performance of Samfilcon A Contact Lenses in Intensive Digital Device Users: A Multicenter, Prospective Clinical Study. Ophthalmol Ther 2021; 10:973-974. [PMID: 34677791 PMCID: PMC8589945 DOI: 10.1007/s40123-021-00407-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Affiliation(s)
- Ömür Ö Uçakhan
- Department of Ophthalmology, Ankara University School of Medicine, Ankara, Turkey
| | - Emrullah Taşındı
- Department of Ophthalmology, İstanbul Okan University Faculty of Medicine, Istanbul, Turkey
| | - Ebru Toker
- Department of Ophthalmology, Marmara University Pendik Training and Research Hospital, Istanbul, Turkey
| | - Ferda Çiftçi
- Department of Ophthalmology, Batıgöz Altunizade Hospital, Istanbul, Turkey
| | - Sevda Aydın Kurna
- Department of Ophthalmology, Fatih Sultan Mehmet Training and Research Hospital, Istanbul, Turkey
| | - Mutlu Acar
- Department of Ophthalmology, Dışkapı Yıldırım Beyazıt Training and Research Hospital, Ankara, Turkey
| | - Ferah Özçelik
- Department of Ophthalmology, Prof Dr Reşat Belger Beyoğlu Training and Research Hospital, Istanbul, Turkey
| | | | - Hatice Elvin Yıldız
- Department of Ophthalmology, Haydarpaşa Numune Training and Research Hospital, Istanbul, Turkey
| | - Yonca Aydın Akova
- Department of Ophthalmology, Bayındır Kavaklıdere Hospital, Ankara, Turkey
| | - Emine Sibel Öncü
- Department of Ophthalmology, Birinci Eye Hospital, Istanbul, Turkey
| | - Zeynep Özbek
- Department of Ophthalmology, 9 Eylül University Hospital, Izmir, Turkey
| | - Zerrin Tuncer
- Department of Ophthalmology, Göz Vakfı Bayrampaşa Eye Hospital, Istanbul, Turkey
| | - Sibel Kocabeyoğlu
- Department of Ophthalmology, Hacettepe University Faculty of Medicine, Ankara, Turkey
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11
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Affiliation(s)
- Mutlu Acar
- Department of Ophthalmology, University of Health Sciences, Ankara Diskapi Yildirim Beyazit Training and Research Hospital, Ankara, Turkey.,Department of Chest Diseases and Sleep Center, University of Health Sciences, Ankara Diskapi Yildirim Beyazit Training and Research Hospital, Ankara, Turkey
| | - Hikmet Firat
- Department of Ophthalmology, University of Health Sciences, Ankara Diskapi Yildirim Beyazit Training and Research Hospital, Ankara, Turkey.,Department of Chest Diseases and Sleep Center, University of Health Sciences, Ankara Diskapi Yildirim Beyazit Training and Research Hospital, Ankara, Turkey
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12
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Ataş H, Gönül M, Gökçe A, Acar M, Gürdal C. An overlap case of Parry-Romberg syndrome and en coup de sabre with striking ocular involvement and anti-double-stranded DNA positivity. Indian J Ophthalmol 2018; 66:336-338. [PMID: 29380800 PMCID: PMC5819137 DOI: 10.4103/ijo.ijo_196_17] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Parry–Romberg syndrome (PRS) may overlap localized scleroderma (morphea) lesions with linear depression (en coup de sabre [ECDS]). Overlap case with PRS and ECDS was presented. Enophthalmos, uveitis, ocular torticollis, keratic linear precipitates, and anti-double-stranded DNA positivity were identified. Subendothelial keratic precipitates detected by an in vivo laser scanning confocal microscopy were the first profiled in the literature. Patients must be evaluated and followed up carefully by their clinics to prevent misdiagnosis and unnecessary procedures such as surgery of ocular torticollis as muscular torticollis.
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Affiliation(s)
- Hatice Ataş
- Department of Dermatology, Ministry of Health, Diskapi Yildirim Beyazit Training and Research Hospital, Ankara, Turkey
| | - Müzeyyen Gönül
- Department of Dermatology, Ministry of Health, Diskapi Yildirim Beyazit Training and Research Hospital, Ankara, Turkey
| | - Aysun Gökçe
- Department of Pathology, Ministry of Health, Diskapi Yildirim Beyazit Training and Research Hospital, Ankara, Turkey
| | - Mutlu Acar
- Department of Ophthalmology, Ministry of Health, Diskapi Yildirim Beyazit Training and Research Hospital, Ankara, Turkey
| | - Canan Gürdal
- Department of Ophthalmology, Ministry of Health, Diskapi Yildirim Beyazit Training and Research Hospital, Ankara, Turkey
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13
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Affiliation(s)
- S Çalışkan
- Diskapi Yildirim Beyazit training and Research Hospital, Ankara, Turkey
| | - M Acar
- Diskapi Yildirim Beyazit training and Research Hospital, Ankara, Turkey
| | - C Gürdal
- Diskapi Yildirim Beyazit training and Research Hospital, Ankara, Turkey
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14
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Yucel A, Yaman M, Acar M, Haktanir A, Albayrak R, Degirmenci B. Sonographic Findings of Median Nerve and Prevalence of Carpal Tunnel Syndrome in Computer Mouse Users. ACTA ACUST UNITED AC 2016. [DOI: 10.1177/197140090501800213] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The purpose of this study was to evaluate the median nerve sonographically and estimate the prevalence of carpal tunnel syndrome (CTS) in computer mouse users. Forty-nine right wrists of 49 employees who had used a computer mouse were included in the study. Thirty-three right wrists of 33 non-mouse user employees were studied as a control group. Both the mouse user and non-mouse user employees underwent sonography and electromyography (EMG). Axial sonograms of the median nerve were obtained proximally, in the middle and distally in the carpal tunnel. At each level, flattening ratio and the cross-sectional area of the median nerve were calculated. We found no significant difference in any parameters between mouse users and control group ( p>0.05). However, when we compared mouse users according to the presence of pain, there was a significant increase in the cross-sectional area of the median nerve proximally in the mouse users having pain ( p<0.05). Of all mouse users, eight (16.3%) were diagnosed as sensory CTS, four (8.2%) as motor CTS by EMG. We also found that four (50%) CTS patients had a proximal cross-sectional area of median nerve exceeding 10 mm2 and five (62.5%) had a distal flattening ratio over three. Prolonged use of a mouse may pose an occupational risk for employees. Sonography can serve as an initial step in symptomatic patients for diagnosis of CTS.
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Affiliation(s)
- A. Yucel
- Department of Radiology, Afyon Kocatepe University School of Medicine; Afyon, Turkey
| | - M. Yaman
- Department of Neurology, Afyon Kocatepe University School of Medicine; Afyon, Turkey
| | - M. Acar
- Department of Radiology, Afyon Kocatepe University School of Medicine; Afyon, Turkey
| | - A. Haktanir
- Department of Radiology, Afyon Kocatepe University School of Medicine; Afyon, Turkey
| | - R. Albayrak
- Department of Radiology, Afyon Kocatepe University School of Medicine; Afyon, Turkey
| | - B. Degirmenci
- Department of Radiology, Afyon Kocatepe University School of Medicine; Afyon, Turkey
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15
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Hanci D, Ulusoy S, Acar M, Burukoglu D, Kutlu HM, Bayar Muluk N, Cingi C. Potential protective effect of resveratrol on acoustic trauma: electron microscopy study. Eur Rev Med Pharmacol Sci 2016; 20:3469-3475. [PMID: 27608909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
OBJECTIVE To investigate the potential preventive effect of resveratrol in rats exposed to acoustic trauma (AT). MATERIALS AND METHODS In this experimental study, Wistar albino rats were divided into three groups: Group 1 (Control, n = 6), Group 2 (AT, n = 6), and Group 3 (resveratrol + AT). The rats in Group 2 were exposed to AT. The rats in Group 3 received resveratrol (300 mg/kg/day) via gavage for 7 days. On day 7, the rats were exposed to AT 10 min following resveratrol treatment. Histological sections of the cochleae were examined using light microscopy, transmission (TEM), and scanning electron microscopy (SEM). RESULTS The cochlear hair cells, stereocilia, and Deiters' cells of the control group appeared normal in all microscopic evaluations. In Group 2, light microscopy revealed predominantly inner hair cell loss, although the outer hair cells were affected. TEM and SEM examination showed severe loss of stereocilia and SEM revealed stereocilia arranged in an asymmetric array. The cochlear structure in Group 3 appeared well preserved under the light microscope, and although TEM and SEM revealed stereocilia loss, the hair cells and stereocilia appeared near normal compared with those of Group 2. CONCLUSIONS Resveratrol may have a protective effect against AT damage in the cochlea, most likely through its antioxidant activity. Our results may be useful for studies in humans exposed to AT and noise-induced hearing loss related to chronic exposure to occupational noise.
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Affiliation(s)
- D Hanci
- ENT Clinics, Okmeydani Training and Research Hospital, Istanbul, Turkey.
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Abstract
PURPOSE The purpose of the study is to compare choroidal thickness (CT) in patients with active and inactive Graves' ophthalmopathy (GO) and that in healthy subjects by using spectral domain optical coherence tomography (SD-OCT). METHODS We conducted an observational, cross-sectional study of 28, 48, and 74 eyes of 14 patients with active GO (group 1), 24 patients with inactive GO (group 2), and 37 age-matched healthy subjects (group 3), respectively. Activity of GO was assessed by using initial clinical activity score (CAS). CT was measured by using SD-OCT. The differences in CT among the groups were compared, and the factors affecting subfoveal CT were analyzed. RESULTS The mean subfoveal CT was significantly greater in group 1 (395.84 ± 9.68 µm) than that in group 2 and group 3 (319.76 ± 7.07 µm and 314.22 ± 5.74 µm, respectively; p < 0.001) after adjusting for age, axial length, and intraocular pressure (IOP). Subfoveal CT was positively correlated with CAS (p < 0.001; r = 0.567). In multivariate analysis, thicker subfoveal CT was associated with younger age (p < 0.001; correlation coefficient B, -1.67; 95% CI, -2.57 to -0.78); disease activity (p < 0.001; correlation coefficient B, 95.28; 95% CI, 73.14-117.43); and lower IOP ((p < 0.001; correlation coefficient B, -4.09; 95% CI, -8.03 to -0.15). CONCLUSIONS To our knowledge, this is the first study showing that the mean subfoveal CT increases in patients with active GO. Subfoveal CT may be a useful parameter to monitor disease activity.
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Affiliation(s)
- Sinan Çalışkan
- a Ophthalmology Department , Dışkapi Yildirim Beyazit Training and Research Hospital , Ankara , Turkey
| | - Mutlu Acar
- a Ophthalmology Department , Dışkapi Yildirim Beyazit Training and Research Hospital , Ankara , Turkey
| | - Canan Gürdal
- a Ophthalmology Department , Dışkapi Yildirim Beyazit Training and Research Hospital , Ankara , Turkey
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Aslan A, Ayaz E, İnan I, Duman E, Acar M. Pancreas rotation anomaly with intestinal malrotation. Acta Gastroenterol Belg 2016; 79:383-384. [PMID: 27821038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
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Acar M, Tonga E, Daskapan A, Karataş M, Tekindal A. Comparison of Physical Activity Levels in Rheumatic Diseases. AKTUEL RHEUMATOL 2016. [DOI: 10.1055/s-0042-100614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Abstract
Objectives: The aim of this study was to evaluate levels of physical activity in patients with rheumatoid arthritis, osteoarthritis and fibromyalgia and to compare the results with both healthy subjects and each other.
Methods: A group of 50 rheumatoid arthritis patients, 95 osteoarthritis patients, 82 fibromyalgia patients and 110 healthy subjects were included in this study. Physical activity levels were assessed by the International Physical Activity Questionnaire (IPAQ).
Results: There were significant differences in walking and total physical activity scores in IPAQ between the rheumatoid arthritis (RA), osteoarthritis (OA), fibromyalgia (FMS) patients and the control group (p<0.05). 36.6% of the fibromyalgia group, 28.4% of the osteoarthritis group, 38% of the rheumatoid arthritis group and 22.7% of the healthy subjects were found to be inactive. 45.1% of the fibromyalgia group, 42.1% of the osteoarthritis group, 46% of the rheumatoid arthritis group and 36.4% of the healthy subjects were found to be insufficiently active.
Conclusion: As a result, when compared to healthy people, physical activity levels were significantly decreased in patients with rheumatoid arthritis, osteoarthritis, fibromyalgia. The decreases in the physical activity levels were clearer in patients with rheumatoid arthritis than in patients with osteoarthritis and fibromyalgia. Recommending regular physical activity should be integral to rheumatic disease management and walking offers a potentially accessible, inexpensive, and acceptable physical activity intervention.
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Affiliation(s)
- M. Acar
- Faculty of Health Sciences, Department of Physiotherapy and Rehabilitation, Baskent University, Ankara, Turkey
| | - E. Tonga
- Faculty of Health Sciences, Department of Physiotherapy and Rehabilitation, Marmara University, İstanbul, Turkey
| | - A. Daskapan
- Faculty of Health Sciences, Department of Physiotherapy and Rehabilitation, Kırıkkale University, Kırıkkale, Turkey
| | - M. Karataş
- Faculty of Health Sciences, Department of Physiotherapy and Rehabilitation, Baskent University, Ankara, Turkey
| | - A. Tekindal
- Faculty of Medicine, Department of Biostatistics, İzmir, İzmir University, Turkey
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Bayır Ö, Acar M, Yüksel E, Yüceege M, Saylam G, Tatar EÇ, Özdek A, Firat H, Gürdal C, Korkmaz MH. The effects of anterior palatoplasty on floppy eyelid syndrome patients with obstructive sleep apnea. Laryngoscope 2016; 126:2171-5. [DOI: 10.1002/lary.25905] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Revised: 12/18/2015] [Accepted: 01/11/2016] [Indexed: 12/19/2022]
Affiliation(s)
- Ömer Bayır
- Department of Otolaryngology; Head & Neck Surgery, Ministry of Health Diskapi Yildirim Beyazit Training and Research Hospital; Ankara Turkey
| | - Mutlu Acar
- Department of Ophthalmology; Ministry of Health Diskapi Yildirim Beyazit Training and Research Hospital; Ankara Turkey
| | - Elvan Yüksel
- Department of Otolaryngology; Head & Neck Surgery, Ministry of Health Diskapi Yildirim Beyazit Training and Research Hospital; Ankara Turkey
| | - Melike Yüceege
- Department of Respiratory Medicine; Ministry of Health Diskapi Yildirim Beyazit Training and Research Hospital; Ankara Turkey
| | - Güleser Saylam
- Department of Otolaryngology; Head & Neck Surgery, Ministry of Health Diskapi Yildirim Beyazit Training and Research Hospital; Ankara Turkey
| | - Emel Çadalli Tatar
- Department of Otolaryngology; Head & Neck Surgery, Ministry of Health Diskapi Yildirim Beyazit Training and Research Hospital; Ankara Turkey
| | - Ali Özdek
- Department of Otolaryngology; Head & Neck Surgery, Ministry of Health Diskapi Yildirim Beyazit Training and Research Hospital; Ankara Turkey
| | - Hikmet Firat
- Department of Respiratory Medicine; Ministry of Health Diskapi Yildirim Beyazit Training and Research Hospital; Ankara Turkey
| | - Canan Gürdal
- Department of Ophthalmology; Ministry of Health Diskapi Yildirim Beyazit Training and Research Hospital; Ankara Turkey
| | - Mehmet Hakan Korkmaz
- Department of Otolaryngology; Head & Neck Surgery, Faculty of Medicine, Yildirim Beyazit University; Ankara Turkey
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Acar U, Acar DE, Tanriverdi C, Acar M, Ozdemir O, Erikci A, Ornek F. Prostaglandin E 2 Levels of Aqueous and Vitreous Humor in Ketorolac 0.4% and Nepafenac 0.1% Administered Healthy Rabbits. Ocul Immunol Inflamm 2016; 25:323-327. [PMID: 26765265 DOI: 10.3109/09273948.2015.1116587] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [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: 01/17/2023]
Abstract
PURPOSE To compare the lowering effects of ketorolac 0.4% and nepafenac 0.1% on aqueous and vitreous humor prostaglandin E2 (PGE2) levels in rabbits. METHODS Ketorolac and nepafenac ophthalmic solutions were administered to the right eyes of 24 healthy rabbits after randomized division into two groups. The left eyes of these rabbits were considered as controls for the two groups. On the 4th day of the experiment, the samples were taken from the aqueous and vitreous humors of the rabbits bilaterally, and PGE2 levels were measured by an enzyme immune assay kit. RESULTS Ketorolac and nepafenac achieved a statistically significant decrease (p<0.001, for each) in PGE2 levels in the aqueous (11.75 ± 6.15 and 14.75 ± 7.60 pg/mL, respectively) and the vitreous humor (6.58 ± 4.62 and 9.83 ± 4.55 pg/mL, respectively). CONCLUSIONS Both ketorolac and nepafenac inhibited PGE2 levels in both the aqueous and vitreous humors of rabbits. Although PGE2-lowering effects were similar in the aqueous humor, nepafenac seemed to be more potent than ketorolac in the vitreous humor.
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Affiliation(s)
- Ugur Acar
- a Department of Ophthalmology , Hacettepe University, Faculty of Medicine , Ankara , Turkey
| | - Damla Erginturk Acar
- b Department of Ophthalmology , Zekai Tahir Burak Women's Health Research and Education Hospital , Ankara , Turkey
| | - Cafer Tanriverdi
- c Department of Ophthalmology , İstanbul Medipol University , İstanbul , Turkey
| | - Mutlu Acar
- d Department of Ophthalmology , Dışkapı Yıldırım Beyazıt Research and Education Hospital , Ankara , Turkey
| | - Ozdemir Ozdemir
- b Department of Ophthalmology , Zekai Tahir Burak Women's Health Research and Education Hospital , Ankara , Turkey
| | - Acelya Erikci
- e Department of Biochemistry , Hacettepe University, Faculty of Pharmacy , Ankara , Turkey
| | - Firdevs Ornek
- f Department of Ophthalmology , Ankara Research and Education Hospital , Ankara , Turkey
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Abstract
BACKGROUND Aripiprazole is an atypical antipsychotic drug. Acute transient myopia is a rare response to systemic medication. Unspecified ocular side effects of aripiprazole have rarely been reported. To the best of our knowledge, only 3 cases of aripiprazole induced myopia and diplopia have been reported in the literature. The aim of this article is to present a case of aripiprazole-induced acute transient myopia. CASE REPORT A 30 year-old woman underwent treatment for 5 days with aripiprazole and presented with bilateral painless blurred vision. The patient's uncorrected visual acuity was 2/10 in both eyes and her best corrected visual acuity was 10/10 in both eyes with a refractive error of -3.00 diopters using a standard Snellen chart. Adding 2 mgs of biperiden a day to her treatment regimen decreased her blurred vision symptoms. After discontinuation of aripiprazole treatment and cross-switching to Paliperidon palmitate (75 mg/month) her blurred vision completely resolved. The same side effect did not re-occur when checked on her 6-month follow up. CONCLUSION Ophthalmologists as well as psychiatrists must be aware of this myopic shift and should also ask these patients about medicine usage, especially aripiprazole. Ophthalmologists should consult the prescribing psychiatrist and stop the drug immediately to reverse this temporary condition.
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Affiliation(s)
- Hasan Karadağ
- Department of Psychiatry, Ankara Dışkapı Yıldırım Beyazıt Training and Research Hospital, Ankara, Turkey
| | - Mutlu Acar
- Department of Ophthalmology, Ankara Dışkapı Yıldırım Beyazıt Training and Research Hospital, Ankara, Turkey
| | - Kadir Özdel
- Department of Psychiatry, Ankara Dışkapı Yıldırım Beyazıt Training and Research Hospital, Ankara, Turkey
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Dogan AS, Atacan D, Durmazlar SPK, Acar M, Gurdal C. Evaluation of dry eye findings in patients with vitiligo. Pak J Med Sci 2015; 31:587-91. [PMID: 26150849 PMCID: PMC4485276 DOI: 10.12669/pjms.313.6926] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2014] [Revised: 11/26/2014] [Accepted: 03/12/2015] [Indexed: 11/15/2022] Open
Abstract
Objective: To evaluate the association of dry eye and vitiligo diseases with objective parameters and a questionnaire. Methods: The study was conducted in 30 vitiligo patients and 31 patients with non-complicated refractory complaints. All the patients underwent complete ophthalmologic examinations including fluorescein break-up time (FBU), corneal fluorescein staining (CFS) and Schirmer test-I. The dry eye status was evaluated by means of Ocular Surface Disease Index (OSDI). Results: The groups were similar regarding the age and gender distribution. The vitiligo group had higher OSDI scores (26.1±15.9 vs 14.7±5.4, t-test, p<0.001), shorter FBU (7.8±2.9 vs 9.8±2.2, Mann Whitney U test, p=0.005) and higher CFS positivity (18/30 vs 3/31, chi-square test, p<0.001) than control group. The groups were similar regarding the Meibomian Gland Dysfunction (MGD) and Schirmer test results. Fourteen (46.7%) of vitiligo patients had periocular involvement. The analysis within vitiligo patients revealed that FBU and Schirmer test were shorter in patients with periocular involvement, the OSDI scores and MGD status were similar. Conclusion: Our study suggest a possible association of dry eye and vitiligo diseases. The diagnostic tools for dry eye disease are in good correlation with each other. The OSDI questionnaire seems practical for both diagnostic purposes and follow-up.
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Affiliation(s)
- Aysun Sanal Dogan
- Aysun Sanal Dogan, Departments of Ophthalmology, Diskapi Yidirim Beyazit Training and Research Hospital, Ministry of Health, Ankara, Turkey
| | - Damla Atacan
- Damla Atacan, Departments of Dermatology, Diskapi Yidirim Beyazit Training and Research Hospital, Ministry of Health, Ankara, Turkey
| | - Selda Pelin Kartal Durmazlar
- Selda Pelin Kartal Durmazlar, Departments of Dermatology, Diskapi Yidirim Beyazit Training and Research Hospital, Ministry of Health, Ankara, Turkey
| | - Mutlu Acar
- Mutlu Acar, Departments of Ophthalmology, Diskapi Yidirim Beyazit Training and Research Hospital, Ministry of Health, Ankara, Turkey
| | - Canan Gurdal
- Canan Gurdal, Departments of Ophthalmology, Diskapi Yidirim Beyazit Training and Research Hospital, Ministry of Health, Ankara, Turkey
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Ergin C, Acar M, Kaya Akış H, Gönül M, Gürdal C. Ocular findings in alopecia areata. Int J Dermatol 2015; 54:1315-8. [DOI: 10.1111/ijd.12897] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Revised: 09/28/2014] [Accepted: 11/22/2014] [Indexed: 01/18/2023]
Affiliation(s)
- Can Ergin
- Department of Dermatology; Dışkapı Yıldırım Beyazıt Education and Research Hospital; Ankara Turkey
| | - Mutlu Acar
- Department of Ophthalmology; Dışkapı Yıldırım Beyazıt Education and Research Hospital; Ankara Turkey
| | - Havva Kaya Akış
- Department of Dermatology; Dışkapı Yıldırım Beyazıt Education and Research Hospital; Ankara Turkey
| | - Müzeyyen Gönül
- Department of Dermatology; Dışkapı Yıldırım Beyazıt Education and Research Hospital; Ankara Turkey
| | - Canan Gürdal
- Department of Ophthalmology; Dışkapı Yıldırım Beyazıt Education and Research Hospital; Ankara Turkey
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Aslan A, Karagöz V, Inan I, Sağıroğlu J, Acar M. Abdominal cocoon with imaging findings: Importance of radiology. Acta Gastroenterol Belg 2015; 78:346-347. [PMID: 26448420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Abdominal cocoon is a rare disease characterized by a thick fibrous membrane surrounding and compressing the small intestines completely or partially, which results in mechanical small bowel obstruction. The clinical findings of the disease include recurrent ileus and subileus episodes, colicky abdominal pain, weight loss, and abdominal distension. The etiology and pathogenesis of abdominal cocoon is not clearly defined. Detection of the disease is essential for accurate treatment. Imaging modalities come into prominence due to the nonspecific clinical findings of the disease.
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Acar M, Fırat H, Gürdal C. Re: Ulander et al.: Side effects to continuous positive airway pressure treatment for obstructive sleep apnoea: changes over time and association to adherence. (Sleep Breath. 2014 Dec;18(4):799-807). Sleep Breath 2015; 19:1343-4. [PMID: 25893320 DOI: 10.1007/s11325-015-1146-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2015] [Revised: 01/24/2015] [Accepted: 02/10/2015] [Indexed: 11/25/2022]
Affiliation(s)
- Mutlu Acar
- Department of Ophthalmology, Ministry of Health, Ankara Diskapi Yildirim Beyazit Training and Research Hospital, 06110, Ankara, Turkey.
| | - Hikmet Fırat
- Department of Chest Diseases and Sleep Center, Ministry of Health, Ankara Diskapi Yildirim Beyazit Training and Research Hospital, Ankara, Turkey
| | - Canan Gürdal
- Department of Ophthalmology, Ministry of Health, Ankara Diskapi Yildirim Beyazit Training and Research Hospital, 06110, Ankara, Turkey
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Ozer MA, Acar M, Yildirim C. Intraocular pressure-lowering effects of commonly used fixed combination drugs with timolol in the management of primary open angle glaucoma. Int J Ophthalmol 2014; 7:832-6. [PMID: 25349802 DOI: 10.3980/j.issn.2222-3959.2014.05.17] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2014] [Accepted: 03/19/2014] [Indexed: 11/02/2022] Open
Abstract
AIM To evaluate intraocular pressure (IOP)-lowering effect and ocular tolerability of brimonidine/timolol, dorzolamide/timolol and latanoprost/timolol fixed combination therapies in the management of primary open angle glaucoma. METHODS Each drug was administered for two months, after which a circadian tonometric curve was recorded using a Goldmann applanation tonometer. Ocular discomfort (conjunctival hyperemia, burning or stinging, foreign body sensation, itching, ocular pain) of each eye was assessed by the subject on a standardized ocular discomfort scale. RESULTS Among the three study groups, there were no significant differences in the mean baseline IOP measurements, mean 2(nd) mo IOP measurements, and mean (%) change of IOPs from baseline. Among the three study groups, there were no significant differences in the mean IOP measurements obtained at circadian tonometric curves at baseline and at two months controls. In sum brimonidine/timolol, dorzolamide/timolol and latanoprost/timolol fixed combination therapies showed similar effects on IOP levels. CONCLUSION Brimonidine/timolol, dorzolamide/timolol and latanoprost/timolol fixed combination therapies showed similar lowering efficaties on IOP levels whereas there was no any difference between each other.
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Affiliation(s)
| | - Mutlu Acar
- Department of Ophthalmology, Ankara Diskapi Yildirim Beyazit Training and Research Hospital, Ankara 06000, Turkey
| | - Cem Yildirim
- Department of Ophthalmology, Pamukkale University Faculty of Medicine, Denizli 20000, Turkey
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27
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San T, Muluk NB, Saylisoy S, Acar M, Cingi C. Nasal septal body and inferior turbinate sizes differ in subjects grouped by sex and age. Rhinology 2014; 52:231-7. [PMID: 25271528 DOI: 10.4193/rhino13.138] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
OBJECTIVES To compare the size of the nasal septal body (SB) and inferior turbinate (IT) of subjects grouped by sex and age. METHOD We measured SB and IT areas (in cm2) bilaterally in computed tomography (CT) sections of 150 para nasal sinuses from 72 males and 78 females. RESULTS The right and left SB areas were smaller in females than in males. In the s25-year-old group, the right IT (RIT) was significantly smaller in females than in males. In the 26-35 and 46-45 age groups, the right SB (RSB) was significantly smaller in females than in males. CONCLUSION The nasal SB may play a role in nasal physiology similar to a turbinate and help support optimal airflow. The vascular and glandular structures of the SB should be investigated in detail, and minimal invasive procedures should be performed in nasal surgery to avoid damaging essential structures.
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Kaplan B, Biçer T, Acar M, Dilmen U. The Frequency of Refractive Errors in the Eyes of the First Grade Primary Students in Ankara Province. Eur J Public Health 2014. [DOI: 10.1093/eurpub/cku165.016] [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: 11/14/2022] Open
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Acar M, Firat H, Yuceege M, Ardic S. Long-term effects of PAP on ocular surface in obstructive sleep apnea syndrome. Can J Ophthalmol 2014; 49:217-21. [PMID: 24767232 DOI: 10.1016/j.jcjo.2013.11.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2013] [Revised: 11/16/2013] [Accepted: 11/20/2013] [Indexed: 10/25/2022]
Abstract
OBJECTIVE To assess the long-term effects of positive airway pressure (PAP) therapy on the ocular surface and eyelid in patients with obstructive sleep apnea hypopnea syndrome (OSAHS). DESIGN Single-centred, prospective, and double-blinded study. PARTICIPANTS Fifty-one patients with OSAHS. METHODS Fifty-one patients with OSAHS were treated with PAP for a period of 18 months. The pre- and post-PAP values for eye examination scores (presence of floppy eyelid syndrome [FES], results of the Ocular Surface Disease Index [OSDI] questionnaire, Schirmer I test, tear film break-up time [TBUT] values, and corneal staining stages) were compared. RESULTS Based on the apnea-hypopnea index, 17 patients were followed with moderate and 34 patients were followed with severe OSAHS. The presence of FES before and after PAP was 56.9% and 74.5% (p < 0.01). FES stage was determined as 1.41 ± 0.98 before PAP and 0.78 ± 0.78 after PAP (p < 0.01). Pre-PAP and post-PAP OSDI results were 47.79 ± 21.04 and 42.17 ± 19.97, respectively (p < 0.01). Schirmer values before and after PAP were 7.23 ± 1.95 and 8.49 ± 1.79 mm, respectively (p < 0.01). TBUT values before and after PAP were 7.11 ± 1.82 and 8.68 ± 1.76 seconds, respectively (p < 0.01). Scores of the corneal staining stages before and after PAP were 1.05 ± 0.75 and 0.68 ± 0.54, respectively (p < 0.01). CONCLUSIONS OSAHS is associated with low Schirmer and TBUT values, and high scores in OSDI questionnaire, and high corneal staining stage. An appropriate PAP therapy helps to relieve both the systemic findings and the ocular surface problems most likely by providing a return to normal sleep patterns. We believe that long-term (at least 1 year) use of PAP improves the clinical picture of FES and can overcome the problem of ocular irritation that is encountered in the early stage of PAP.
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Affiliation(s)
- Mutlu Acar
- Ministry of Health, Department of Ophthalmology, Ankara Diskapi Yildirim Beyazit Training and Research Hospital, Ankara, Turkey.
| | - Hikmet Firat
- Department of Chest Diseases and Sleep Center, Ankara, Turkey
| | - Melike Yuceege
- Department of Chest Diseases and Sleep Center, Ankara, Turkey
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Caglar V, Songur A, Acar M, Uygur R, Alkoc OA, Acar T. Volumetric evaluation of fat in the renal sinus in normal subjects using stereological method on computed tomography images and its relationship with body composition. Folia Morphol (Warsz) 2014; 73:302-8. [PMID: 25242158 DOI: 10.5603/fm.2014.0016] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2013] [Revised: 02/10/2014] [Accepted: 02/28/2014] [Indexed: 11/25/2022]
Abstract
BACKGROUND The aim of the study was: to describe a simple, accurate and practical technique for estimating the volume of adipose tissue within the renal sinus (RS) using stereological method on computed tomography (CT) images; to establish a population database for volume of fat within the RS from 21 to 80 years of age; to investigate the effect of age, gender, body mass index (BMI) and abdominal diameters on RS fat volume in normal subjects. MATERIALS AND METHODS We retrospectively reviewed abdominal CT examinations of 240 patients without renal pathology between the ages of 21 and 80 years. There were 6 groups of patients, with 40 patients for each decade. RESULTS RS fat volumes in the left and right kidney were 5.70 ± 2.87 cm³ and 4.15 ± 2.39 cm³, respectively, in males and 3.51 ± 2.67 cm³ and 2.49 ± 2.16 cm³, respectively, in females. RS fat volume and age were positively correlated for both kidneys (left: r = 0.46; right: r = 0.44; p < 0.001, both), though it appeared to decline after age 70. CONCLUSIONS Quantitative data may allow clinicians to better estimate the age-related RS fat volume changes and help them in decision making.
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Affiliation(s)
- V Caglar
- Department of Anatomy, Faculty of Medicine, Namık Kemal University, Tekirdag, Turkey.
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Öz FN, Koca SB, Tanır G, Ciçek D, Acar M, Zorlu P. Enterobacter cloacae septicaemia complicating rotavirus gastroenteritis: a case report. East Mediterr Health J 2014; 20:514-516. [PMID: 25150360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Received: 08/14/2013] [Accepted: 04/16/2014] [Indexed: 06/03/2023]
Affiliation(s)
- F N Öz
- Department of Paediatric Infectious Diseases Dr Sami Ulus Maternity and Children's Research and Training Hospital, Ankara, Turkey
| | - S B Koca
- Department of Paediatrics, Dr Sami Ulus Maternity and Children's Research and Training Hospital, Ankara, Turkey
| | - G Tanır
- Department of Paediatric Infectious Diseases Dr Sami Ulus Maternity and Children's Research and Training Hospital, Ankara, Turkey
| | - D Ciçek
- Department of Paediatrics, Dr Sami Ulus Maternity and Children's Research and Training Hospital, Ankara, Turkey
| | - M Acar
- Department of Paediatrics, Dr Sami Ulus Maternity and Children's Research and Training Hospital, Ankara, Turkey
| | - P Zorlu
- Department of Paediatrics, Dr Sami Ulus Maternity and Children's Research and Training Hospital, Ankara, Turkey
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Oz F, Koca S, Tanir G, Cicek D, Acar M, Zorlu P. Enterobacter cloacae septicaemia complicating rotavirus gastroenteritis: a case report. East Mediterr Health J 2014. [DOI: 10.26719/2014.20.8.514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Acar M, Sahin H, Oznur M, Bender O, Surgit O, Gunduz E, Gunduz M. 958: Effect of Survivin gene −1547 A>G (rs3764383) polymorphism in Turkish breast cancer patients. Eur J Cancer 2014. [DOI: 10.1016/s0959-8049(14)50850-7] [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: 11/16/2022]
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Gunduz M, Acar M, Fakioglu K, Dogan B, Oznur M, Gunduz E. 288: Effect of boric acid on head and neck cancer cell lines. Eur J Cancer 2014. [DOI: 10.1016/s0959-8049(14)50256-0] [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: 11/26/2022]
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Gok K, Cemeroglu O, Cakirbay H, Gündüz E, Acar M, Cetin E, Gunduz M, Demircan K. THU0470 The Relationship between Cytosine-Adenine Repeat Polymorphism in the Promoter Region of Adamts 9 (A Distintegrinand Metalloproteinase with Thrombospondin Motif 9) Gene and Clinical and Radiologic Severity of Knee Osteoarthritis. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.2280] [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: 11/04/2022]
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Tonga E, Acar M, Daskapan A. AB1168-HPR Physical Inacivity in Adults with Rheumatic Diseases. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.4551] [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: 11/04/2022]
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Acar DE, Acar U, Yumusak N, Korkmaz M, Acar M, Atilgan HI, Yalniz-Akkaya Z, Koca G. Reducing the Histopathological Changes of Radioiodine to the Lacrimal Glands by a Popular Anti-Oxidant: Lycopene. Curr Eye Res 2014; 39:659-65. [DOI: 10.3109/02713683.2013.867354] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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San T, Muluk N, Saylisoy S, Acar M, Cingi C. Nasal septal body and inferior turbinate sizes differ in subjects grouped by sex and age. Rhinology 2014; 52:231-237. [DOI: 10.4193/rhin13.138] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
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Çomoğlu SS, Güven H, Acar M, Öztürk G, Koçer B. Tear levels of tumor necrosis factor-alpha in patients with Parkinson's disease. Neurosci Lett 2013; 553:63-7. [PMID: 23973333 DOI: 10.1016/j.neulet.2013.08.019] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2013] [Revised: 08/07/2013] [Accepted: 08/12/2013] [Indexed: 12/20/2022]
Abstract
Neuroinflammatory events mediated by the pro-inflammatory cytokine tumor necrosis factor-alpha (TNF-α) cause progressive neurodegeneration in dopaminergic neurons, and play an important role in the pathogenesis of Parkinson's disease (PD). The purpose of this study was to determine TNF-α levels in tear samples obtained from patients with PD and to analyze the relationship between TNF-α values and PD characteristics. Eighteen patients with PD and 17 healthy control subjects were included in the study. We examined the patient demographics, modified Hoehn and Yahr Staging Scale (mHY) stages, Unified Parkinson's disease rating scale (UPDRS) II and III scores, Mini Mental State Examination (MMSE) scores, and the predominant symptoms. We measured TNF-α using the multiplex immunobead assay in unstimulated tear samples, and determined the Schirmer's test and blink rate for each subject. Tear TNF-α values were significantly higher in patients with PD (196.9 ± 121.2 pg/ml) than in control subjects (110.7 ± 87.2 pg/ml; p=0.02). We identified no relationship between tear TNF-α levels and age, sex, age at onset, PD duration, mHY stages, UPDRS II, UPDRS III, or MMSE scores. The higher TNF-α levels observed in the tears of patients with PD suggests neuroinflammation and TNF-α plays a role in the pathogenesis of PD. Tear TNF-α levels, however, were not related to the duration or severity of PD. Tears are a suitable method for measuring TNF-α levels, and can be used as a diagnostic measure to evaluate biomarkers in PD.
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Affiliation(s)
- Selim Selçuk Çomoğlu
- Ankara Dışkapı Yıldırım Beyazıt Training and Research Hospital, Department of Neurology, Turkey
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Acar M, tonga E, daskapan A. AB0840-HPR Physical activity level and physical fitness in patients with rheumatoid arthritis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.3162] [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: 11/04/2022]
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Ocak Z, Acar M, Gunduz E, Gunduz M, Demircan K, Uyeturk U, Ozlü T. Effect of hypericin on the ADAMTS-9 and ADAMTS-8 gene expression in MCF7 breast cancer cells. Eur Rev Med Pharmacol Sci 2013; 17:1185-1190. [PMID: 23690187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
AIM To investigate the effects of hypericin which is obtained from the plant Hypericum perforatum on the expression and the regulation of ADAMTS8 and ADAMTS9 genes in MCF7 breast cancer cells and on the viability of these cells. MATERIALS AND METHODS MCF7 cells were cultured and were separately exposed to 2, 10 and 50 µl/mL of hypericin. After 24 hours, RNA was isolated from these cells and converted to cDNA. The expression levels of ADAMTS8 and ADAMTS9 genes were evaluated using the Reverse Transcription Polymerase Chain Reaction. XTT (2,3-bis-(2-methoxy-4-nitro-5-sulfophenyl)-2H-tetrazolium-5-carboxanilide, disodium salt) cell viability assay was used to determine cytotoxicity. RESULTS ADAMTS9 expression in MCF7 cells were increased 1.8 and 3.6 fold with the use of 2 and 10 µl/mL of hypericin, respectively; and decreased 0.7 fold with the use of 50 µl/mL of hypericin. There was no significant change in the ADAMTS8 expression. Rapid cell death was observed in the cancer cells when hypericin was used at a dose of ≥ 50 µl/mL. CONCLUSIONS The increase in ADAMTS9 expression can be a useful factor in the prevention of possible metastasis in breast cancer and for the occurrence of a tumor suppressive effect. Hypericin increases the expression of ADAMTS9, therefore, it may show its antitumoral and antiapoptotic effects by means of ADAMTS9.
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Affiliation(s)
- Z Ocak
- Department of Medical Genetics, Abant Izzet Baysal University, Bolu, Turkey.
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Acar M, Firat H, Acar U, Ardic S. Ocular surface assessment in patients with obstructive sleep apnea-hypopnea syndrome. Sleep Breath 2012; 17:583-8. [PMID: 22664770 DOI: 10.1007/s11325-012-0724-0] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2012] [Accepted: 05/22/2012] [Indexed: 10/28/2022]
Abstract
PURPOSE The aim of this study was to assess the correlation between ocular surface changes and disease severity in patients with obstructive sleep apnea-hypopnea syndrome (OSAHS). METHODS Two hundred eighty patients with OSAHS were compared with respect to the presence of a floppy eyelid syndrome (FES), Ocular Surface Disease Index (OSDI) questionnaire, the corneal fluorescein staining stages, the Schirmer I test, and tear film break-up time (TBUT) values. RESULTS Based on the apnea-hypopnea index, the presence of FES was detected at the following rates: 23.1 % in non-OSAHS group (A), 41.7 % in mild group (B), 66.7 % in moderate group (C), and 74.6 % in severe group (D); severe and moderate stage of FES was found in groups C and D and mild stage of FES in group B (p < 0.01). OSDI questionnaire values were as follows: group A, 12.57 ± 17.64; group B, 22.90 ± 16.78; group C, 45.94 ± 22.03; and group D, 56.68 ± 22.85(p < 0.01). Schirmer values were as follows: group A, 10.76 ± 3.58 mm; group B, 9.83 ± 2.53 mm; group C, 7.73 ± 2.42 mm; and group D, 6.97 ± 2.15 mm (p < 0.01). The TBUT values were as follows: group A, 10.53 ± 3.64 s; group B, 9.46 ± 2.40 s; group C, 7.29 ± 2.13 s; and group D, 6.82 ± 2.20 s (p < 0.01). Corneal staining scores are as follows: 0.26 ± 0.60 in group A, 0.40 ± 0.71 in group B, 0.98 ± 0.72 in group C, and 1.14 ± 0.90 in group D, and the differences were statistically significant among the groups(p < 0.01). DISCUSSION OSAHS, particularly the moderate and severe forms, is associated with low Schirmer and TBUT values and high scores in OSDI questionnaire and corneal staining pattern stage. The presence of FES is observed as a practically constant finding in OSAHS. If complaints such as burning, stinging, and itching which can be commonly observed in middle-aged patients are accompanied by FES, the patient should be evaluated for sleep disorders. We speculate that appropriate treatment of OSAHS may result in better control of these symptoms.
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Affiliation(s)
- Mutlu Acar
- Department of Ophthalmology, Ministry of Health, Ankara Diskapi Yildirim Beyazit Training and Research Hospital, Ankara, Turkey.
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Bozkurt E, Acar M, Meral K, Arık M, Onganer Y. Photoinduced interactions between coumarin 151 and colloidal CdS nanoparticles in aqueous suspension. J Photochem Photobiol A Chem 2012. [DOI: 10.1016/j.jphotochem.2012.03.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Yavuz V, Çetin N, Acar M, Türk U, Dalgiç O, Tavli T. PP-218 MOBILE AORTIC ROOT ATHEROMA DIAGNOSED BY TRANSESOPHAGEAL ECHOCARDIOGRAPHY AS SOURCE OF RECURRENT CEREBRAL EMBOLISM. Int J Cardiol 2012. [DOI: 10.1016/s0167-5273(12)70418-7] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Yavuz V, Çetin N, Dalgiç O, Akkaya B, Dindar C, Acar M, Taşkin U, Uludağ Ö, Tavli T. PP-049 EFFECT OF TURKISH COFFEE ON HEMODYNAMIC PARAMETERS AND RHYTHM IN PATIENTS WITH CORONARY ARTERY DISEASE. Int J Cardiol 2012. [DOI: 10.1016/s0167-5273(12)70282-6] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Esat V, Acar M. Viscoelastic finite element analysis of the cervical intervertebral discs in conjunction with a multi-body dynamic model of the human head and neck. Proc Inst Mech Eng H 2008; 223:249-62. [DOI: 10.1243/09544119jeim421] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
This article presents the effects of the frontal and rear-end impact loadings on the cervical spine components by using a multi-body dynamic model of the head and neck, and a viscoelastic finite element (FE) model of the six cervical intervertebral discs. A three-dimensional multi-body model of the human head and neck is used to simulate 15 g frontal and 8.5 g rear-end impacts. The load history at each intervertebral joint from the predictions of the multi-body model is used as dynamic loading boundary conditions for the FE model of the intervertebral discs. The results from the multi-body model simulations, such as the intervertebral disc loadings in the form of compressive, tensile, and shear forces and moments, and from the FE analysis such as the von Mises stresses in the intervertebral discs are analysed. This study shows that the proposed approach that uses dynamic loading conditions from the multi-body model as input to the FE model has the potential to investigate the kinetics and the kinematics of the cervical spine and its components together with the biomechanical response of the intervertebral discs under the complex dynamic loading history.
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Affiliation(s)
- V Esat
- Department of Computer Science/RSI, Loughborough University, Loughborough, Leicestershire, UK
| | - M Acar
- Department of Mechanical and Manufacturing Engineering, Loughborough University, Loughborough, Leicestershire, UK
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Canan S, Bozkurt HH, Acar M, Vlamings R, Aktas A, Sahin B, Temel Y, Kaplan S. An efficient stereological sampling approach for quantitative assessment of nerve regeneration. Neuropathol Appl Neurobiol 2008; 34:638-49. [DOI: 10.1111/j.1365-2990.2008.00938.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Abstract
OBJECTIVES This study presents an investigation of anti-whiplash features that can be implemented in a car seat to reduce whiplash injuries in the case of a rear impact. The main emphasis is on achieving a seat design with good energy absorption properties. METHODS A biofidelic 50th percentile male multi-body human model for rear impact is developed to evaluate the performance of car seat design concepts. The model is validated using the responses of 7 volunteers from the Japanese Automobile Research Institute (JARI) sled tests, which were performed at an impact speed of 8 kph with a rigid seat and without head restraint and seatbelt. A generic multi-body car seat model is also developed to implement various seatback and recliner properties, anti-whiplash devices, and head restraints. Using the same driving posture and the rigid seat in the JARI sled tests as the basic configuration, several anti-whiplash seats are designed to allow different types of motion for the seatback and seat-pan. RESULTS The anti-whiplash car seat design concepts limit neck internal motion successfully until the head-to-head restraint contact occurs and they exhibit low NIC(max) values (7 m(2)/s(2) on average). They are also effective in reducing neck compression forces and T1 forward accelerations. In principle, these car seat design concepts employ controlled recliner rotation and seat-pan displacement to limit the formation of S-shape. This is accomplished by using anti-whiplash devices that absorb the crash energy in such a way that an optimum protection is provided at different severities. CONCLUSIONS The results indicate that the energy absorbing car seat design concepts all demonstrate good whiplash-reducing performances at the IIWPG standard pulse. Especially in higher severity rear impacts, two of the car seat design concepts reduce the ramping of the occupant considerably.
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Affiliation(s)
- S Himmetoglu
- Wolfson School of Mechanical and Manufacturing Engineering, Loughborough University, Leicestershire, UK
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Yilmaz S, Acar M, Bukulmez A, Yazicioglu B, Yaprak O, Sen T, Gursel T. The 'leaking' of the perirenal haematoma into peritoneum mimicking acute abdomen in a patient with von Willebrand's disease following blunt abdominal trauma. Haemophilia 2007; 13:672-4. [PMID: 17880462 DOI: 10.1111/j.1365-2516.2007.01511.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Degirmenci B, Haktanir A, Albayrak R, Acar M, Sahin DA, Sahin O, Yucel A, Caliskan G. Sonographically guided fine-needle biopsy of thyroid nodules: the effects of nodule characteristics, sampling technique, and needle size on the adequacy of cytological material. Clin Radiol 2007; 62:798-803. [PMID: 17604771 DOI: 10.1016/j.crad.2007.01.024] [Citation(s) in RCA: 99] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2006] [Revised: 01/11/2007] [Accepted: 01/16/2007] [Indexed: 11/26/2022]
Abstract
AIM To evaluate the effects of sonographic characteristics of thyroid nodules, the diameter of needle used for sampling, and sampling technique on obtaining sufficient cytological material (SCM). MATERIALS AND METHODS We performed sonography-guided fine-needle biopsy (FNB) in 232 solid thyroid nodules. Size-, echogenicity, vascularity, and localization of all nodules were evaluated by Doppler sonography before the biopsy. Needles of size 20, 22, and 24 G were used for biopsy. The biopsy specimen was acquired using two different methods after localisation. In first method, the needle tip was advanced into the nodule in various positions using a to-and-fro motion whilst in the nodule, along with concurrent aspiration. In the second method, the needle was advanced vigorously using a to-and-fro motion within the nodule whilst being rotated on its axis (capillary-action technique). RESULTS The mean nodule size was 2.1+/-1.3 cm (range 0.4-7.2 cm). SCM was acquired from 154 (66.4%) nodules by sonography-guided FNB. In 78 (33.6%) nodules, SCM could not be collected. There was no significant difference between nodules with different echogenicity and vascularity for SCM. Regarding the needle size, the lowest rate of SCM was obtained using 20 G needles (56.6%) and the highest rate of adequate material was obtained using 24 G needles (82.5%; p=0.001). The SCM rate was 76.9% with the capillary-action technique versus 49.4% with the aspiration technique (p<0.001). CONCLUSION Selecting finer needles (24-25 G) for sonography-guided FNB of thyroid nodules and using the capillary-action technique decreased the rate of inadequate material in cytological examination.
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Affiliation(s)
- B Degirmenci
- Department of Radiology, Faculty of Medicine, University of Kocatepe, Afyonkarahisar Turkey.
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