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Kocaeli AA, Tekin C, Ercelik M, Tezcan G, Aksoy SA, Kocaeli H, Bekar A, Taskapilioglu MO, Tolunay S, Tunca B. Concurrent presence of diabetes affects the GLUT3 programming of glucose metabolism in glioblastoma. Eur Rev Med Pharmacol Sci 2023; 27:8110-8118. [PMID: 37750639 DOI: 10.26355/eurrev_202309_33571] [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: 09/27/2023]
Abstract
OBJECTIVE Diabetes mellitus (DM)-mediated impaired glucose metabolism increase in the glioblastoma (GB) risk by inducing hyperglycemia and hyperinsulinemia. An integral membrane transport protein, glucose transporter 3 (GLUT3) facilitates glucose transport into GB tumor cells. We aimed to explore the regulation of GLUT3 in GB tumors of patients who were concurrently diagnosed with DM. PATIENTS AND METHODS Formalin-fixed paraffin-embedded (FFPE) tumor samples were collected from 93 GB patients and retrospectively analyzed. Of the total, 15 patients were concurrently diagnosed with DM (GB-DM). The role of GLUT3 in tumor aggressiveness was evaluated by analyzing its correlation with Ki67, P53 expression, MALAT1 expression, and peripheral blood hemoglobin A1C (HbA1c) level. T98G cells were treated with empagliflozin and metformin to modulate GLUT3. The RNA expression of GLUT3, SOX2, and MALAT1 was analyzed by real-time qPCR. The lactate levels of T98G cells were measured by Cobas c502 analyzer. A scratch wound assay was performed to investigate the migration rate of T98G cells. RESULTS GLUT3 expression was lower in GB-DM tumors than in GB-only tumors. In GB-DM, the expression of tumoral GLUT3 and peripheral blood glycated hemoglobin (HbA1c) levels were negatively correlated with P53 and Ki67. A decreased GLUT3 shortened the disease-free survival duration in GB-DM patients. Empagliflozin reduced GLUT3, while metformin-induced GLUT3 in T98G cells. The empagliflozin-mediated GLUT3 suppression induced SOX2 and MALAT1 expressions and influenced the migration capacity of T98G cells. CONCLUSIONS Our findings suggest that the low GLUT3 expression of the tumors of GB-DM patients may induce the production of adenosine triphosphate (ATP) from cellular energy sources other than glucose metabolism. However, further studies are warranted to confirm these results.
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Affiliation(s)
- A A Kocaeli
- Department of Endocrinology, Bursa State Hospital, Bursa, Turkey.
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Taskapilioglu MO, Ozmarasali AI, Balci M, Ocakoglu G. Epidemiological comparison between two decades of pediatric head injury hospitalization in turkey in 2000–2010 and 2011–2020. Turk Neurosurg 2022; 33:447-450. [DOI: 10.5137/1019-5149.jtn.41960-22.1] [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: 11/06/2022]
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Bulut G, Taskapilioglu MO. Decision Making via 3D Computed Tomography in the Surgical Treatment of Cubital Tunnel Syndrome: Surgical Technique and Results. Turk Neurosurg 2021; 32:727-731. [PMID: 34859832 DOI: 10.5137/1019-5149.jtn.35061-21.3] [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
AIM In the surgical treatment of the ulnar nerve entrapment in the cubital tunnel, simple decompression and anterior subcutaneous nerve transposition are frequently preferred surgical techniques. Which method is applied depends on the surgeon's preference and experience. Therefore, the aim of this study is to investigate the importance of elbow 3D computed tomography in surgical planning when deciding on the treatment method. MATERIAL AND METHODS In this study, 21 patients with cubital tunnel syndrome in our clinic were included and retrospectively analyzed. All of the patients were diagnosed with EMG, and surgical planning was performed based on the anatomy of the cubital tunnel diagnosed via 3D computed tomography. In addition to the classical simple decompression of the ulnar nerve, 15 patients underwent cubital tunnel reconstruction with high-speed drill, whereas 6 patients underwent ulnar nerve anterior subcutaneous transposition. The results were evaluated based on the modified Wilson & Krout criteria. RESULTS Fourteen of the patients were female and seven were male. The average age was 42.2 years. Fifteen patients underwent simple decompression of the ulnar nerve and cubital tunnel reconstruction. Transposition was performed in six patients. The patients were followed up for an average of 107.5 months (3-144). Based on the Wilson & Krout criteria, excellent results were obtained in 14 patients (66.7%), good results in 6 (28.6%), and poor results in 1 (4.8%). CONCLUSION The evaluation of the cubital tunnel via 3D computed tomography before the operation is effective in determining the optimal surgical technique and obtaining more successful clinical results. The cubital tunnel reconstruction in addition to simple decompression increases surgical success and minimizes complications and the possibility of relapse due to the fact that the nerve remains in its natural position.
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Affiliation(s)
- Guray Bulut
- Medipol University School of Medicine, Department of Neurosurgery, Istanbul, Turkey
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Bekar A, Eser Ocak P, Taskapilioglu MO, Turkkan A. CT-Guided Percutaneous Trigeminal Tractotomy-Nucleotomy for Intractable Craniofacial Pain. Stereotact Funct Neurosurg 2020; 98:350-357. [PMID: 32862186 DOI: 10.1159/000509316] [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: 01/10/2020] [Accepted: 06/09/2020] [Indexed: 11/19/2022]
Abstract
OBJECT In this report, we aimed to analyze the outcome results of our patients who underwent percutaneous trigeminal tractotomy (TR) and nucleotomy (NC) procedures, which are defined as destructive procedures targeting the descending trigeminal tractus and nucleus caudalis of the spinal trigeminal nucleus, respectively, for intractable craniofacial pain. METHODS The medical records of a total of 12 patients who underwent a total of 14 computed tomography (CT)-guided TR-NC procedures at our clinics between 2005 and 2017 were retrospectively reviewed. RESULTS A significant increase in patients' performance status (p = 0.015) as well as a significant decrease in the VAS score (p < 0.001) were achieved. Grade I pain relief (VAS = 0, no pain) was established in 66.7% of the patients, whereas grade II pain relief was observed in the remaining patients. Two of the patients suffered from recurrent pain after the initial procedure. Both patients underwent a second trigeminal TR-NC procedure, and grade I pain relief was re-established. The mean VAS score at 3-month follow-up was 1.4 ± 1.1, whereas this score at 6-month follow-up was 2 ± 1.3. The trigeminal TR-NC procedure resulted in a significant decrease in patients' VAS scores at 3- and 6-month follow-up visits compared with preoperative VAS scores (p < 0.001). Transient ataxia was noted in only one patient (8.3%) early after the procedure. CONCLUSIONS The results presented in the current study support the efficacy of the percutaneous CT-guided trigeminal TR-NC procedure in the management of intractable facial pain in selected patients. The use of CT guidance allows direct visualization of the target area, thereby enhancing the safety and success of the procedure.
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Affiliation(s)
- Ahmet Bekar
- Department of Neurosurgery, Bursa Uludag University School of Medicine, Bursa, Turkey, .,Department of Neurosurgery, VM Medical Park Hospital, Bursa, Turkey,
| | - Pinar Eser Ocak
- Department of Neurosurgery, Bursa Uludag University School of Medicine, Bursa, Turkey
| | - M Ozgur Taskapilioglu
- Department of Neurosurgery, Bursa Uludag University School of Medicine, Bursa, Turkey
| | - Alper Turkkan
- Department of Neurosurgery, VM Medical Park Hospital, Bursa, Turkey
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Tezcan G, Aksoy SA, Tunca B, Bekar A, Mutlu M, Cecener G, Egeli U, Kocaeli H, Demirci H, Taskapilioglu MO. Oleuropein modulates glioblastoma miRNA pattern different from Olea europaea leaf extract. Hum Exp Toxicol 2019; 38:1102-1110. [PMID: 31169033 DOI: 10.1177/0960327119855123] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [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: 12/11/2022]
Abstract
Glioblastoma (GBM) is the most prevalent and deadliest subtype of glioma. Despite current innovations in existing therapeutic modalities, GBM remains incurable, and alternative therapies are required. Previously, we demonstrated that Olea europaea leaf extract (OLE) kills GBM cells by modulating miR-181b, miR-137, miR-153 and Let-7d expression. However, although oleuropein (OL) is the main compound in OLE, its role in the antitumour effect of OLE remains unknown. This study determined the effect of OL on GBM cell line T98G and compared the results with our previous findings regarding the effect of OLE on the same cell line. The antiproliferative activity of OL and its effect on temozolomide (TMZ) response were tested inT98G cells using WST-1 assay. OL inhibition was evaluated using one-way analysis of variance with Tukey's post hoc test. The effect of OL on miR-181b, miR-137, miR-153 and Let-7d expression was assessed using quantitative reverse transcription polymerase chain reaction. Fold differences in expression between untreated, OL or OL + TMZ-treated samples were calculated using 2-ΔCt method. Significance was evaluated using an independent sample t-test. Treatment with 277.5 and 555 µM OL resulted in 39.51% and 75.40% reductions in T98G cells within 24 h. Coadministration of 325 µM TMZ and 277.5 or 555 µM, OL caused 2.08- and 2.83-fold increases, respectively, in the therapeutic effect of TMZ. OL + TMZ significantly increased microRNA expression, particularly Let-7d, than OLE. In conclusion, OL has an antitumour effect on GBM cells mainly via regulation of Let-7d expression. The present results also indicate other minor compounds in OLE play important anticancer roles.
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Affiliation(s)
- G Tezcan
- 1 Institute of Fundamental Medicine and Biology, Open Lab: Gene and Cell Technologies, Kazan Federal University, Kazan, Russia
| | - S A Aksoy
- 2 Department of Medical Biology, Medical Faculty, Uludag University, Bursa, Turkey
| | - B Tunca
- 2 Department of Medical Biology, Medical Faculty, Uludag University, Bursa, Turkey
| | - A Bekar
- 3 Department of Neurosurgery, Medical Faculty, Uludag University, Bursa, Turkey
| | - M Mutlu
- 2 Department of Medical Biology, Medical Faculty, Uludag University, Bursa, Turkey
| | - G Cecener
- 2 Department of Medical Biology, Medical Faculty, Uludag University, Bursa, Turkey
| | - U Egeli
- 2 Department of Medical Biology, Medical Faculty, Uludag University, Bursa, Turkey
| | - H Kocaeli
- 3 Department of Neurosurgery, Medical Faculty, Uludag University, Bursa, Turkey
| | - H Demirci
- 2 Department of Medical Biology, Medical Faculty, Uludag University, Bursa, Turkey
| | - M O Taskapilioglu
- 3 Department of Neurosurgery, Medical Faculty, Uludag University, Bursa, Turkey
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Abstract
Intracranial aneurysms and their treatment is one of the leading problems of neurosurgery that create high mortality and morbidity. The technique of safe clipping is as generally used depends on the temporary occlusion of the cerebral vasculature during surgery. However, there is no exact data about temporary clipping or timing of this procedure. Preconditioning by exposure to sublethal hypoxic stress, hours or days before severe hypoxia, decreases cell death, and this resistance of the brain to injury is known as ischemic tolerance. Brief alternating periods of reperfusion-reocclusion at the beginning of reperfusion is defined as postconditioning. Cerebral ischemic pre/postconditioning protects against stroke, but is clinically feasible only when the occurrence of stroke is predictable. Brief, repetitive occlusion and release of the main trunk of a vessel during early aneurysm surgery or before long-lasting temporary artery occlusion may protect the brain against later possible vasospasm/ischemia.
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Taskapilioglu MO, Billur D, Kizil S, Taskapilioglu O, Ocakoglu G, Aydin S, Bekar A, Unlu A. Targeting Apoptosis Through Foxp1, and N-cadherin with Glatiramer Acetate in Chick Embryos During Neural Tube Development. Turk Neurosurg 2016; 26:586-94. [PMID: 27400107 DOI: 10.5137/1019-5149.jtn.14518-15.3] [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: 10/23/2022]
Abstract
AIM To demonstrate the effect of glatiramer acetate (GA) in chick embryos on neural tube (NT) development, and to explore its effects of Foxp1, apoptosis, and N-cadherin. MATERIAL AND METHODS One hundred fertile, specific pathogen free eggs were divided into 5 groups for this study. The eggshell was windowed specifically at 24 hours of incubation. The embryos in Group 1 (n=20) were treated with 10 μl physiological saline; in Group 2 the embryos (n=20) were given 10 μl GA (equal to daily human therapeutic dose); 20 μl GA (equal to twice daily human therapeutic dose) was injected to embryos in Group 3 (n=20); in Group 4 and 5, 30 μl and 40 μl GA were administered to the embryos (n=20) (equal to x3 and x4 daily human therapeutic dose, respectively). Each egg was re-incubated for 24 hours more. Then, histological and immunohistochemical evaluation of the subjects were done. RESULTS The embryos with NT defect showed FOXP1 expression without N- cadherin or staining with N-cadherin in another location in our study. We interpreted this result as GA leading to an NT closure defect by increasing FOXP expression. Moreover, we also showed the reverse relation between FOXP1 and N-cadherin at the immunohistochemical level for the first time. CONCLUSION GA affects the spinal cord development through FOXP in the chick embryo model at high doses.
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Ocakoglu G, Taskapilioglu MO, Ercan I, Demir AB, Hakyemez B, Bekar A, Bora I. Statistical shape analysis of temporal lobe in mesial temporal sclerosis patients. Acta Neurochir (Wien) 2015; 157:1897-903; discussion 1903. [PMID: 26329731 DOI: 10.1007/s00701-015-2555-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [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: 05/28/2015] [Accepted: 08/12/2015] [Indexed: 12/31/2022]
Abstract
BACKGROUND Surgery is regarded as a common treatment option for patients with mesial temporal lobe epilepsy due to hippocampal sclerosis but sometimes deciding this diagnosis can be very difficult. We aim to investigate the shape differences in the temporal lobe of mesial temporal sclerosis epilepsy patients compared with healthy controls, investigating the side difference and, if present, assessing the clinical application of this situation. METHOD The MRI scans of mesial TLE patients and controls were retrospectively reviewed. Temporal lobe data were collected from the two-dimensional digital images. Standard anthropometric landmarks were selected and marked on each digital image using TPSDIG 2.04 software. Eight anatomic landmarks were marked on images. A generalized Procrustes analysis was used to evaluate the shape difference. The shape deformation of the temporal lobe from control to patient was evaluated using the TPS method. RESULTS There were statistically significant TL shape differences between groups. High level deformations for the left and right side from the control to patient group were seen in the TPS graphic. The highest deformation was determined at the inferior lateral temporal midpoint of the middle temporal gyri and superior temporal landmark points of both the right and left sides. CONCLUSION Our study for the first time demonstrated temporal shape differences in TLE patients using a landmark-based geometrical morphometric method by taking into consideration the topographic distribution of TL.
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Affiliation(s)
- Gokhan Ocakoglu
- Department of Biostatistics, Faculty of Medicine, Uludag University, Bursa, Turkey.
| | | | - Ilker Ercan
- Department of Biostatistics, Faculty of Medicine, Uludag University, Bursa, Turkey
| | - Aylin Bican Demir
- Department of Neurology, Faculty of Medicine, Uludag University, Bursa, Turkey
| | - Bahattin Hakyemez
- Department of Radiology, Faculty of Medicine, Uludag University, Bursa, Turkey
| | - Ahmet Bekar
- Department of Neurosurgery, Faculty of Medicine, Uludag University, Bursa, Turkey
| | - Ibrahim Bora
- Department of Neurology, Faculty of Medicine, Uludag University, Bursa, Turkey
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