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Uysal BS, Sarıkaya B, Dizakar SÖA, Kaplanoğlu GT, Gümüşderelioğlu M. Investigation of healing strategies in a rat corneal opacity model with polychromatic light and stem cells injection. J Photochem Photobiol B 2024; 253:112874. [PMID: 38422971 DOI: 10.1016/j.jphotobiol.2024.112874] [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] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Revised: 02/13/2024] [Accepted: 02/22/2024] [Indexed: 03/02/2024]
Abstract
Corneal opacities are a major cause of vision loss worldwide. However, the current therapies are suboptimal to manage the corneal wound healing process. Therefore, there is an obvious need to develop new treatment strategies that are efficient in promoting wound healing in patients with severe corneal disorders. In this study, we investigated and compared the efficacy of adipose-derived mesenchymal stem cells (ADMSCs) and photobiomodulation (PBM) with polychromatic light in the NIR (600-1200 nm) alone and in combination, on corneal opacity, inflammatory response, and tissue architecture in a rat corneal opacity model created by mechanical injury. All animals were divided into four groups randomly following the injury: injury only (no treatment), ADMSCs treatment, PBM treatment and combined (ADMSCs+PBM) treatment (n = 12 eyes per group). At the 10th and 30th day following injury, corneal opacity formation, neovascularization, and corneal thickness were assessed. On the 30th day the harvested corneas were analyzed by transmission electron microscopy (TEM), histological evaluation, immunohistochemical (IHC) staining and real-time polymerase chain reaction (RT-PCR). On day 30, the corneal opacity score, neovascularization grade, and corneal thickness in all treatment groups were significantly lower in comparison with the untreated injured corneas. The TEM imaging and H&E staining together clearly revealed a significant enhancement in corneal regeneration with improved corneal microenvironment and reduced vascularization in the combined administration of PBM and ADMSCs compared to treatment of PBM and ADMSCs alone. In addition, the IHC staining, and RT-PCR analysis supported our hypothesis that combining ADMSCs therapy with PBM alleviated the inflammatory response, and significantly decreased scar formation compared to either ADMSCs or PBM alone during the corneal wound healing.
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Affiliation(s)
- Betül Seher Uysal
- Gazi University, Faculty of Medicine, Department of Ophthalmology, Ankara, Turkey
| | - Burcu Sarıkaya
- Balıkesir University, Faculty of Medicine, Department of Medical Genetics, Balıkesir, Turkey
| | | | - Gülnur Take Kaplanoğlu
- Gazi University, Faculty of Medicine, Department of Histology and Embryology, Ankara, Turkey
| | - Menemşe Gümüşderelioğlu
- Hacettepe University, Graduate School of Science and Engineering, Bioengineering Division, Ankara, Turkey.
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Yılmaz MM, Akdere ÖE, Gümüşderelioğlu M, Kaynak Bayrak G, Koç S, Erdem A, Tuncer M, Atalay Ö, Take Kaplanoğlu G, Akarca Dizakar SÖ, Calis M. Biological nerve conduit model with de-epithelialized human amniotic membrane and adipose-derived mesenchymal stem cell sheet for repair of peripheral nerve defects. Cell Tissue Res 2023; 391:505-522. [PMID: 36562866 DOI: 10.1007/s00441-022-03732-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 04/08/2022] [Accepted: 12/07/2022] [Indexed: 12/24/2022]
Abstract
In this study, a biological conduit, consisting of an adipocyte-derived mesenchymal stem cell (AdMSCs) sheet and amniotic membrane (AM), was designed for the reconstruction of peripheral nerve defects. To evaluate the effect of the produced conduit on neural regeneration, a 10-mm sciatic nerve defect was created in rats, and experiments were carried out on six groups, i.e., sham control group (SC), negative control group (NC), nerve autograft group (NG), the biological conduit (AdMSCs + AM) group, the commercial PGA tube conduit (PGA) group, and the conduit only consisting of AM (AM) group. The effects of different nerve repair methods on the peripheral nerve and gastrocnemius muscle were evaluated by functional, histological, and immunohistochemical tests. When the number of myelinated axons was compared between the groups of AdMSCs + AM and PGA, it was higher in the AdMSCs + AM group (p < 0.05). The percentage of gastrocnemius collagen bundle area of AdMSCs + AM group was found to be statistically lower than the PGA group (p < 0.05). The muscle fiber diameter of AdMSCs + AM group was lower than that of the NG group, but significantly higher than that of the PGA group and the AM group (p < 0.001). Muscle weight index was significantly higher in the AdMSCs + AM group compared to the PGA group (p < 0.05). It was observed that nerve regeneration was faster in the AdMSCs + AM group, and there was an earlier improvement in pin-prick score and sciatic functional index compared to the PGA group and the AM group. In conclusion, the biological conduit prepared from the AdMSCs sheet and AM is regarded as a new biological conduit that can be used as an alternative treatment method to nerve autograft in clinical applications.
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Affiliation(s)
- Mahmut Muhsin Yılmaz
- Department of Plastic Reconstructive and Aesthetic Surgery, Hacettepe University Faculty of Medicine, Hacettepe Universitesi Eriskin Hastanesi, Kat B, Plastik Cerrahi Anabilim Dali, 06100, Sihhiye - Ankara, Turkey
| | | | | | | | - Sena Koç
- Chemical Engineering Department, Hacettepe University, Ankara, Turkey
| | - Ayşen Erdem
- Department of Physiology, Hacettepe University, Ankara, Turkey
| | - Meltem Tuncer
- Department of Physiology, Hacettepe University, Ankara, Turkey
| | - Özbeyen Atalay
- Department of Physiology, Hacettepe University, Ankara, Turkey
| | | | | | - Mert Calis
- Department of Plastic Reconstructive and Aesthetic Surgery, Hacettepe University Faculty of Medicine, Hacettepe Universitesi Eriskin Hastanesi, Kat B, Plastik Cerrahi Anabilim Dali, 06100, Sihhiye - Ankara, Turkey.
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Abstract
Diabetes mellitus (DM) is a serious and common in the world health problem that leads to different complications. Changes in oxidative stress and antioxidant capacity play an important role in the pathogenesis of DM. The purpose of this study was to investigate ellagic acid (EA) treatment in diabetes induced testicular damage. In our study, 24 male Sprague Dawley rats were divided into four groups. Group 1: Control (n = 6), Group 2: EA (n = 6), Group 3: Diabet (n = 6), Group 4: Diabet + EA (n = 6). Diabetes was induced by intraperitoneal injection of streptozocin (STZ) (55 mg/kg) to group 3 and 4. EA was given 100 mg/kg/day group 2 and 4 for 35 days by oral gavage. We used that Hematoxylen-Eosin (H&E) and Johnsen's scoring to determine histological change. The terminal-deoxynucleoitidyl-transferase mediated nick end-labeling assay (TUNEL) was used for apoptosis. Oxidative stress markers were determined by qRT-PCR and immunexpression of Nrf2 was evaluated in testicular tissue. In conclusion, EA administration on the diabetes model has changed the histopathological features, apopotosis and oxidative stress marker genes in the testis and may have an effect on the reduction of diabetes induced testicular damage.
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Affiliation(s)
| | - Gulistan Sanem Saribas
- Department of Histology and Embryology, Faculty of Medicine, Ahi Evran University, Kirsehir, turkey
| | - Akın Tekcan
- Department of Medical Biology Faculty of Medicine, Amasya University, Amasya, Turkey
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Akçay NC, Ömeroğlu S, Dizakar SÖA, Kavutçu M, Türkoğlu İ, Eşmekaya MA, Peker TV. The effects of melatonin on possible damage that will occur on adipocytokines and liver tissue by coadministration of fructose and bisphenol a (BPA). Environ Sci Pollut Res Int 2020; 27:16231-16245. [PMID: 32124283 DOI: 10.1007/s11356-020-08041-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Accepted: 02/10/2020] [Indexed: 06/10/2023]
Abstract
BPA, one of the environmental endocrine disruptors, and fructose, reason of liver steatosis which is frequently encountered in the daily diet, contribute to the formation of metabolic syndrome (MetS). This study examines the possible effects of concurrent fructose and BPA administration on MetS and determines the effects of melatonin on this process. In the seven identified groups, a total of forty-two adult male Sprague Dawley rats were treated by following fructose, BPA, and melatonin amounts, separately and together: group 1 (control), group 2 (10% aqueous fructose), group 3 (25 mg/kg BPA), group 4 (10% fructose + 25 mg/kg BPA), group 5 (10% fructose + 20 mg/kg melatonin), group 6 (25 mg/kg BPA + 20 mg/kg melatonin), and group 7 (10% fructose + 25 mg/kg BPA + 20 mg/kg melatonin). At the end of 60 days, histochemical, immunohistochemical, and biochemical procedures were performed on liver tissue. As a result, it was seen that BPA and fructose + BPA induced morphological alteration and inflammation and increased intracellular lipid quantity and amount of collagen and reticular fibers. The percentage of apoptotic liver cells stained by annexin V-FITC/PI was lower in group 7 compared to the group 4 (p < 0,001) and also in group 6 compared to the group 3 (p = 0.014). Both BPA and fructose application caused an increase in lipid peroxidation level due to the increase of oxidative stress. Application of melatonin induced antioxidant enzyme activity and reduced lipid peroxidation level. Our results indicate that fructose and BPA administration triggered the formation of MetS, whereas melatonin healed these variations, although not entirely.
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Affiliation(s)
- Neslihan Coşkun Akçay
- Department of Obstetrics and Gynecology, In Vitro Fertilization Unit, Hacettepe University Faculty of Medicine, 2th Floor, 06230, Ankara, Turkey.
| | - Suna Ömeroğlu
- Department of Histology and Embryology, Gazi University Medical Faculty. Gazi University Faculty of Medicine Dean's Building, 4th Floor, Beşevler, Yenimahalle, 06560, Ankara, Turkey
| | - Saadet Özen Akarca Dizakar
- Department of Histology and Embryology, Gazi University Medical Faculty. Gazi University Faculty of Medicine Dean's Building, 4th Floor, Beşevler, Yenimahalle, 06560, Ankara, Turkey
| | - Mustafa Kavutçu
- Department of Biochemistry, Gazi University Medical Faculty. Gazi University Faculty of Medicine Dean's Building, 5th Floor, Beşevler, Yenimahalle, 06560, Ankara, Turkey
| | - İsmail Türkoğlu
- Department of Histology and Embryology, Gazi University Medical Faculty. Gazi University Faculty of Medicine Dean's Building, 4th Floor, Beşevler, Yenimahalle, 06560, Ankara, Turkey
| | - Meriç Arda Eşmekaya
- Department of Biophysics, Gazi University Medical Faculty. Gazi University Faculty of Medicine Dean's Building, 5th Floor, Beşevler, Yenimahalle, 06560, Ankara, Turkey
| | - Tuncay Veysel Peker
- Department of Anatomy, Gazi University Medical Faculty. Gazi University Faculty of Medicine Dean's Building, 2th Floor, Beşevler, Yenimahalle, 06560, Ankara, Turkey
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Abstract
Background/aim: Hepcidin is the main hormone in the regulation of iron metabolism which is also released from the heart. The aim of our study was to investigate the effects of hepcidin on the cardiac ischemia-reperfusion injury.Materials and methods: In this study, 12 Wistar albino rats were divided into two groups (n = 6 each): 1) The ischemia-reperfusion group (Group 1); 2) Hepcidin-treated group (Group 2). Rat hearts were perfused on Langendorff system with KH (Krebs-Henseleit) and subjected to 30 min stabilization, 30 min global ischemia, and 30 min reperfusion. Hepcidin (- M) was applied to group 2 at the onset of ischemia. Malondialdehyde (MDA), glutathione (GSH), and nitric oxide (NOx) levels were measured in heart tissue for NOx levels, viscosity, and ion content of perfusate were collected before ischemia and the 1st, 5th, 10th, 20th, and 30th minutes of reperfusion were determined. Apoptosis in heart was evaluated.Results: NOx and MDA levels significantly decreased in heart tissue in Hepcidin-treated group. NOx and viscosity of perfusate were not significantly different between the groups. Perfusate iron, calcium, magnesium, potassium, and sodium levels in group 2 were more homogeneous. Histologic structures of heart tissue were regularly in group 2. Apoptosis were increased in control group compared to hepcidin treated group.Conclusion: These results suggest that hepcidin may have a protective effect on the heart for the ischemia-reperfusion injury.
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Affiliation(s)
- Atilla Bayraktar
- Department of Physiology, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Deniz Erbaş
- Department of Physiology, Faculty of Medicine, Gazi University, Ankara, Turkey
| | | | - Tayfun Göktaş
- Department of Physiology, Faculty of Medicine, Lokman Hekim University, Ankara, Turkey
| | - Suna Ömeroğlu
- Department of Histology and Embryology, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Eser Öz Oyar
- Department of Physiology, Faculty of Medicine, İzmir Katip Çelebi University, İzmir, Turkey
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Çetin E, Daldal İ, Eren A, Akarca Dizakar SÖ, Ömeroğlu S, Uzuner B, Çelik HH, Saygılı HH, Koçkar B, Şenköylü A. Epidermal growth factor enhances spinal fusion: Posterolateral lumbar fusion model on rats. Acta Orthop Traumatol Turc 2019; 53:134-139. [PMID: 30738625 PMCID: PMC6506815 DOI: 10.1016/j.aott.2019.01.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 11/30/2018] [Accepted: 01/17/2019] [Indexed: 12/31/2022]
Abstract
Objective The aim of this study was to investigate the effects of human recombinant epidermal growth factor (EGF) on posterolateral lumbar fusion in a rat model. Methods 36 male Sprague Dawley rats underwent posterolateral fusion at L4-5 level. They were randomly assigned to 3 groups: 1- Sham control group where no local augmentation was made, 2- Local Hydoxyapatite β-tricalcium phosphate (HA/β-TCP) augmentation group and 3- Local HA/β-TCP + EGF augmentation group. Rats were euthanized at 8 weeks post-surgery. 6 rats from each group were selected for manual palpation examination, micro-computed tomography analysis and histologic analysis; and the rest was used for biomechanical analysis. Results Based on manual palpation, there was no fusion in the sham control group. Fusion rate was 33.3% in the HA/β-TCP group and 66.7% in the HA/β-TCP + EGF group (p = 0.085). Micro-CT results revealed that new bone formation was higher in the HA/β-TCP + EGF group (BV/TV: 40% vs. 65%) (p = 0.004). Histologically newly formed bone tissue was more pronounced in the EGF group and compacted and bridging bone spicules were observed. The median maximum bending moment values were 0.51 Nmm (0.42–0.59), 0.73 Nmm (0.49–0.88) and 0.91 Nmm (0.66–1.03) in the sham control, HA/β-TCP and HA/β-TCP + EGF groups, respectively (p = 0.013). The median stiffness values were 1.69 N/mm (1.12–2.18), 1.68 N/mm (1.13–2.74) and 3.10 N/mm (1.66–4.40) as in the previous order (p = 0.087). Conclusion This study demonstrates that EGF enhances posterolateral lumbar fusion in the rat model. EGF in combination with ceramic grafts increased the fusion rates. Our findings may provide insights to further studies, investigating EGF's clinical usage as an alternative fusion enhancer.
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Affiliation(s)
- Engin Çetin
- Department of Orthopaedics and Traumatology, Gaziosmanpaşa Taksim Training and Research Hospital, Istanbul, Turkey.
| | - İsmail Daldal
- Department of Orthopaedics and Traumatology, Gazi University Faculty of Medicine, Ankara, Turkey.
| | - Ali Eren
- Department of Orthopaedics and Traumatology, Gazi University Faculty of Medicine, Ankara, Turkey.
| | | | - Suna Ömeroğlu
- Department of Histology and Embryology, Gazi University Faculty of Medicine, Ankara, Turkey.
| | - Bora Uzuner
- Department of Anatomy, Hacettepe University Faculty of Medicine, Ankara, Turkey.
| | - Hakan Hamdi Çelik
- Department of Anatomy, Hacettepe University Faculty of Medicine, Ankara, Turkey.
| | | | - Benat Koçkar
- Department of Mechanical Engineering, Hacettepe University, Ankara, Turkey.
| | - Alpaslan Şenköylü
- Department of Orthopaedics and Traumatology, Gazi University Faculty of Medicine, Ankara, Turkey.
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Erisgin Z, Atasever M, Cetinkaya K, Akarca Dizakar SÖ, Omeroglu S, Sahin H. Protective effects of Nigella sativa oil against carboplatin-induced liver damage in rats. Biomed Pharmacother 2018; 110:742-747. [PMID: 30554112 DOI: 10.1016/j.biopha.2018.12.037] [Citation(s) in RCA: 5] [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] [Received: 09/27/2018] [Revised: 11/18/2018] [Accepted: 12/07/2018] [Indexed: 01/07/2023] Open
Abstract
OBJECTIVE This study aimed to investigate the protective effects of nigella sativa oil (NSO) against liver damage due to intraperitoneal (i.p.) usage of carboplatin which is commonly used as a chemotherapeutic agent. MATERIAL AND METHOD Twenty four female Wistar-albino rats (about 200-350 grams each) were divided into 4 groups. Group 1 (n = 6) was administered 4 ml/kg intraperitoneal (i.p.) saline 48 and 24 h before. Group 2 (n = 6) was i.p. administered 4 ml/kg NSO 48 h before and 4 ml/kg saline 24 h before. Group 3 (n = 6) was i.p. administered 4 ml/kg saline 48 h before and 80 mg/kg carboplatin 24 h before. Group 4 (n = 6) was i.p. administered 4 ml/kg NSO 48 h before and 80 mg/kg carboplatin 24 h before. At the end of 48 h, all rats were sacrificed, and liver tissues were put into 10% neutral formalin. After the routine tissue follow-up, histopathological changes and collagen fiber density were evaluated with Hematoxylin-Eosin and Masson's Trichrome staining. Apoptotic index was determined with TUNEL staining. RESULTS The degeneration in hepatocytes, fiber distribution and density around central vein and portal space was observed in the carboplatin group compared to the control and NSO groups, hepatocyte cords preserved integrity, partial degeneration in hepatocytes and decreased collagen fiber distribution around central vein was noted in the NSO-carboplatin group compared to the carboplatin group. The apoptosis was lower in the NSO-carboplatin group compare with the carboplatin group, but no statistically significant difference was found between the two groups (p = 0.449). CONCLUSION When used NSO before carboplatin exposure, it may protect against liver damage.
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Affiliation(s)
- Zuleyha Erisgin
- Giresun University, Faculty of Medicine, Department of Histology and Embryology, Giresun, Turkey.
| | - Melahat Atasever
- Giresun University, Faculty of Medicine, Department of Gynaecology, Giresun, Turkey
| | - Kadir Cetinkaya
- Ankara Oncology Education and Research Hospital, Ankara, Turkey
| | | | - Suna Omeroglu
- Gazi University, Faculty of Medicine, Department of Histology and Embryology, Ankara, Turkey
| | - Huseyin Sahin
- Giresun University, Espiye Vocational School, Giresun, Turkey
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Dernek D, Ömeroğlu S, Akçay NC, Kartal B, Dizakar SÖA, Türkoğlu İ, Aydin V. Possible effects of melatonin against rat uterus exposure to bisphenol A during neonatal period. Environ Sci Pollut Res Int 2017; 24:26829-26838. [PMID: 28963684 DOI: 10.1007/s11356-017-0187-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Accepted: 09/12/2017] [Indexed: 06/07/2023]
Abstract
The aim of this study was to investigate the possible effects of melatonin on rat uterine tissue against exposure with bisphenol A (BPA) in the neonatal period. Twenty-four female rats were divided into four groups, (n=6) per group. Group I was used as a control (sesame oil + ethanol), group II was injected daily with (100 mg/kg) BPA by subcutaneously (sc) daily postnatal days (PND 0-10), group III was injected daily with (10 mg/kg) melatonin by sc for 10 days (PND 20-30), and group IV was injected daily with (100 mg/kg) BPA (PND 0-10) and (10 mg/kg) melatonin (PND 20-30). All rats were sacrificed in the same day of metestrus cycle, approximately PND 70. Histological analyses, immunostaining of B cell lymphoma 2 (Bcl-2), and cytochrome c and TUNEL assays were performed. According to our results, neonatal exposure to BPA accelerates onset of puberty, causes degenerative and morphometric changes on rat uterus, and increases apoptotic reaction rates. The immunoreactivity of Bcl-2 was decreased after BPA administration. In addition, immunoreactivity of Bcl-2 showed an increase after melatonin treatment. However, cytochrome c immunoreactivity was decreased after melatonin administration. Our results suggest that melatonin may have positive effects against BPA-induced degenerative changes on rat uterus.
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Affiliation(s)
- Damla Dernek
- General Directorate of Blood Services, Turkish Red Crescent, 06790, Etimesgut, Ankara, Turkey
| | - Suna Ömeroğlu
- Department of Histology and Embryology, Medical Faculty, Gazi University, Gazi University Faculty of Medicine Dean's Building, 4th Floor, Beşevler, 06560, Yenimahalle, Ankara, Turkey
| | - Neslihan Coşkun Akçay
- Department of Obstetrics and Gynecology, Faculty of Medicine, Hacettepe University, In-Vitro Fertilization Unit, 2nd Floor, 06230, Ankara, Turkey
| | - Bahar Kartal
- Department of Histology and Embryology, Medical Faculty, Kafkas University, Kafkas University Faculty of Medicine 1st Floor, 36100, Kars, Turkey
| | - Saadet Özen Akarca Dizakar
- Department of Histology and Embryology, Medical Faculty, Gazi University, Gazi University Faculty of Medicine Dean's Building, 4th Floor, Beşevler, 06560, Yenimahalle, Ankara, Turkey.
| | - İsmail Türkoğlu
- Department of Histology and Embryology, Medical Faculty, Gazi University, Gazi University Faculty of Medicine Dean's Building, 4th Floor, Beşevler, 06560, Yenimahalle, Ankara, Turkey
| | - Vildan Aydin
- Department of Histology and Embryology, Medical Faculty, Gazi University, Gazi University Faculty of Medicine Dean's Building, 4th Floor, Beşevler, 06560, Yenimahalle, Ankara, Turkey
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