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Sezen O, Erdemci B, Calik M, Koc M. The role of melatonin in preventing radiation-induced intestinal injury. J BUON 2021; 26:626-633. [PMID: 34077015] [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: 06/12/2023]
Abstract
PURPOSE Despite the therapeutic effects of radiotherapy on tumor cells, it has potential severe adverse effects on the surrounding normal tissues. Acute or chronic intestinal adverse effects that are likely to occur in patients undergoing radiotherapy for pelvic and abdominal cancers lead to increased morbidity, significant impairment of the quality of life, and economic losses. Various biological, chemical and pharmacological agents are being tested to protect from and to treat radiation enteritis. This experimental study aimed to investigate the protective effects of melatonin against radiation-induced intestinal injury when administered before radiation exposure in rats. METHODS In the present study, villus height and the number of villi in the ileum and jejunum of rats receiving two different doses of intraperitoneal melatonin (5 and 10 mg/kg) prior to a single fraction of radiation given at a dose of 8 Gy to the abdominal region, was evaluated by histopathological examination 3 and 7 days after radiation exposure. RESULTS At a dose of 5 mg/kg, melatonin was found to be effective in preventing radiation-induced injury to villus height in the jejunum and the number of villi in the ileum and jejunum, and at a dose of 10 mg/kg it was also effective in preventing radiation-induced injury to villus height in the ileum. CONCLUSIONS Melatonin is effective for the prevention of radiation-induced intestinal injury. This outcome can be considered an evidence to test melatonin in clinical trials.
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Affiliation(s)
- Orhan Sezen
- Ataturk University School of Medicine, Department of Radiation Oncology, Erzurum, Turkey
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Calik I, Yayla M, Cinar I, Cadirci E, Albayrak A, Sirin B, Calik M, Halici Z. LP44 (4-[2-(methylthio)phenyl]-N-(1,2,3,4-tetrahydronaphthalen-1-yl)-1-piperazinehexanamide) exerts anti-ulcer effects via 5-hydroxytryptamine receptor 7 activation on indomethacin-induced gastric ulcers in rats. Inflammopharmacology 2020; 28:893-902. [PMID: 32504222 DOI: 10.1007/s10787-020-00725-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Accepted: 05/20/2020] [Indexed: 10/24/2022]
Abstract
AIM This study aimed to demonstrate the role of serotonin 7 receptor (5-HT7) and the effects of 5-HT7 agonists and antagonists in an indomethacin-induced gastric ulcer. MATERIAL AND METHOD Male albino Wistar rats (n = 60) were used in the experiments. LP44 (5-HT7 agonist) and SB269970 (5-HT7 antagonist) were administered at 10 mg/kg as a pre-treatment. One hour after the drug treatments, 25 mg/kg of indomethacin (INDO) was administered to all groups except the healthy control group. Six hours after indomethacin administration, all the rats were euthanized. RESULTS We analyzed the iNOS, eNOS, and 5-HT7 receptor mRNA levels in the stomach tissue of rats by real-time PCR. 5-HT7 mRNA expression was increased in the INDO group compared to the healthy group. LP44 administration exerted a significant upregulatory effect on eNOS mRNA expression and downregulatory effects on iNOS and 5-HT7 mRNA expression compared to the INDO group. However, antagonist (SB269970) administration did not result in such difference in gene expression, but even partially decreased the agonist's effect in combination. Famotidine and agonist exerted similar effects. Histopathological findings supported the beneficial effects of 5-HT7 agonist on gastric tissue. CONCLUSION The study suggested that activation of 5-HT7 receptor showed a significant anti-ulcerogenic effect in the indomethacin-induced gastric ulcer model.
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Affiliation(s)
- Ilknur Calik
- Department of Pathology, Faculty of Medicine, Firat University, 23119, Elazıg, Turkey
| | - Muhammed Yayla
- Department of Pharmacology, Faculty of Medicine, Kafkas University, 36180, Kars, Turkey
| | - Irfan Cinar
- Department of Pharmacology, Faculty of Medicine, Kafkas University, 36180, Kars, Turkey
| | - Elif Cadirci
- Department of Pharmacology, Faculty of Medicine, Ataturk University, 25240, Erzurum, Turkey.,Clinical Research, Development and Design Application and Research Center, Ataturk University, 5240, Erzurum, Turkey
| | - Abdulmecit Albayrak
- Department of Pharmacology, Faculty of Medicine, Ataturk University, 25240, Erzurum, Turkey
| | - Busra Sirin
- Department of Pharmacology, Faculty of Medicine, Ataturk University, 25240, Erzurum, Turkey
| | - Muhammet Calik
- Department of Pathology, Faculty of Medicine, Firat University, 23119, Elazıg, Turkey
| | - Zekai Halici
- Department of Pharmacology, Faculty of Medicine, Ataturk University, 25240, Erzurum, Turkey. .,Clinical Research, Development and Design Application and Research Center, Ataturk University, 5240, Erzurum, Turkey.
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Calik I, Calik M, Sarikaya B, Ozercan IH, Arslan R, Artas G, Dagli AF. P2X7 receptor as an independent prognostic indicator in gastric cancer. Bosn J Basic Med Sci 2020; 20:188-196. [PMID: 32070268 PMCID: PMC7202194 DOI: 10.17305/bjbms.2020.4620] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Accepted: 02/18/2020] [Indexed: 12/24/2022] Open
Abstract
Gastric cancer (GC) is one of the foremost causes of cancer-related death around the world. The P2X7 receptor (P2X7R), a member of the P2X7R subfamily of P2 receptors, is a unique molecule that has been shown to affect tumor growth and progression as well as various inflammatory processes, including proliferation of T lymphocytes, release of cytokines, and production of free oxygen radicals. P2X7R has been established as a prognostic parameter in some cancers, and recently, it has been investigated in the development of new targeted therapies. In the present study, we aimed to investigate the prognostic value of P2X7R expression in GC. The expression profile of P2X7R was evaluated immunohistochemically in 156 paraffin-embedded human GC specimens. P2X7R expression was higher in patients with lymph node metastasis than in those without (p < 0.001). P2X7R overexpression was closely related with tumor-infiltrating lymphocytes (TILs) (p = 0.001), vascular invasion (p = 0.006), depth of invasion (p < 0.001), distant metastasis (p < 0.001), and advanced tumor, node, metastasis stage (p < 0.001). Moreover, univariate (hazard ratio [HR] 3.98; 95% confidence interval (CI) 1.89-11.82; p < 0.001) and multivariate (HR 2.24; 95% CI 3.53-12.50; p < 0.001) Cox regression analysis showed that upregulated P2X7R expression clearly correlated with worsened overall survival. In summary, our data revealed that P2X7R may serve as a reliable prognostic parameter and promising therapeutic target for GC.
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Affiliation(s)
- Ilknur Calik
- Department of Pathology, Faculty of Medicine, Fırat University, Elazığ, Turkey
| | - Muhammet Calik
- Department of Pathology, Faculty of Medicine, Fırat University, Elazığ, Turkey
| | - Burcu Sarikaya
- Department of Pathology, Faculty of Medicine, Fırat University, Elazığ, Turkey
| | | | - Ramazan Arslan
- Department of Pathology, Faculty of Medicine, Fırat University, Elazığ, Turkey
| | - Gokhan Artas
- Department of Pathology, Faculty of Medicine, Fırat University, Elazığ, Turkey
| | - Adile Ferda Dagli
- Department of Pathology, Faculty of Medicine, Fırat University, Elazığ, Turkey
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Calik I, Calik M, Turken G, Ozercan IH. A promising independent prognostic biomarker in colorectal cancer: P2X7 receptor. Int J Clin Exp Pathol 2020; 13:107-121. [PMID: 32211091 PMCID: PMC7061807] [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] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 01/23/2020] [Indexed: 06/10/2023]
Abstract
The P2X7 receptor (P2X7R) is an exclusive member of the purinergic receptor family that plays a key role in tumor progression, including colorectal cancer (CRC). P2X7R supports the tumor cells to resist unfavorable conditions by stimulating GLUT-1 expression. GLUT1 is the major glucose transporter in CRC cells and is indicated to be a poor prognostic indicator in patients with CRC. Recently, P2X7R and GLUT-1 are being investigated as prognostic biomarkers in the development of new treatment options. In this study, we aimed to investigate the prognostic value of P2X7R and GLUT-1 expression in CRC. We examined P2X7R and GLUT-1 expression in specimens of 196 CRC patients, immunohistochemically. P2X7R expression was higher in patients with poorly differentiated tumors than in those with well differentiated ones (P = 0.001). P2X7R and GLUT-1 overexpression were correlated to TILs (P<0.001; P = 0.028, respectively), depth of invasion (P<0.001; P = 014, repectively), distant metastasis (P<0.001), and advanced TNM stage (P<0.001). Moreover, multivariate Cox regression analysis showed that P2X7R overexpression clearly correlated with worsened overall survival (HR 4.69; 95% CI 1.77-12.41; P = 0.002). Similarly, patients with GLUT-1 overexpression showed shorter overall and disease-free survival than those with low expression. Our data support that P2X7R and GLUT-1 may be used as an independent prognostic markers and may present new options in terms of targeted therapies for CRC patients.
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Affiliation(s)
- Ilknur Calik
- Department of Pathology, Faculty of Medicine, Fırat University Turkey
| | - Muhammet Calik
- Department of Pathology, Faculty of Medicine, Fırat University Turkey
| | - Gulistan Turken
- Department of Pathology, Faculty of Medicine, Fırat University Turkey
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Kerget B, Araz O, Yilmazel Ucar E, Karaman A, Calik M, Alper F, Akgun M. Female workers' silicosis diagnosis delayed due to gender bias. Occup Med (Lond) 2019; 69:219-222. [PMID: 30869783 DOI: 10.1093/occmed/kqz019] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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: 11/13/2022] Open
Abstract
After excluding alternative explanations, a silicosis diagnosis is based on the combination of appropriate silica exposure history and compatible clinical, radiological and occasionally pathological findings. Not taking appropriate occupational history by a physician may cause a misdiagnosis or underdiagnosis of silicosis. Herein, we present a female worker in a small-scale sandblasting factory who worked as a controller. Her silicosis diagnosis was established 10 years after her first symptoms, and she underwent invasive procedures due to a lack of inquiry about her occupational history. Gender bias may be one of the reasons that her occupational history was not taken.
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Affiliation(s)
- B Kerget
- Department of Pulmonary Diseases, School of Medicine, Atatürk University, Erzurum, Turkey.,Health Science University, Erzurum, Turkey
| | - O Araz
- Department of Pulmonary Diseases, School of Medicine, Atatürk University, Erzurum, Turkey
| | - E Yilmazel Ucar
- Department of Pulmonary Diseases, School of Medicine, Atatürk University, Erzurum, Turkey
| | - A Karaman
- Department of Radiology, School of Medicine, Atatürk University, Erzurum, Turkey
| | - M Calik
- Department of Pathology, School of Medicine, Firat University, Elazig, Turkey
| | - F Alper
- Department of Radiology, School of Medicine, Atatürk University, Erzurum, Turkey
| | - M Akgun
- Department of Pulmonary Diseases, School of Medicine, Atatürk University, Erzurum, Turkey
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Albayrak M, Senol O, Demirkaya-Miloglu F, Calik M, Kadioglu Y. Novel chemometrics‑assisted spectroscopic methods for diagnosis and monitoring of invasive ductal carcinoma in breast tissue. BRATISL MED J 2019; 120:184-187. [PMID: 31023035 DOI: 10.4149/bll_2019_031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
OBJECTIVES Early diagnosis of breast cancer is extremely important because it is the most common female cancer and a leading cause of cancer death in adult women. In this study, it is aimed to create Raman mapping with developed chemometrics‑assisted Raman and FT-IR spectroscopy methods for the diagnosis of invasive ductal carcinoma (IDC) in breast tissue samples. METHODS Samples were deparaffinized and 20‑micron layers of each tissue were located on a coverslip. Mapping of both healthy and cancerous tissues were performed by exposing them to Raman laser at 532 and 758 nm while excitation was recorded at wavenumbers in range of 100-4,000 cm-1. Orthogonal partial least square (OPLS) algorithm was applied to evaluate obtained Raman spectra. Latent variable was selected to explain the whole model. RESULTS Healthy and IDC tissues were accurately and precisely clustered with Raman mapping and obtained results were compared to those obtained by means of histopathology and FT-IR methods. It is claimed that the proposed method has a great potential in clustering and separating IDC tissues from the healthy ones. CONCLUSION This novel, rapid, precise, easy and objective diagnosis method may be an alternative to conventional diagnostic methods for IDC in breast tissue (Fig. 5, Ref. 22).
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Aydin MD, Kanat A, Yolas C, Soyalp C, Onen MR, Yilmaz I, Karaavci NC, Calik M, Baykal O, Ramazanoglu L. Spinal Subarachnoid Hemorrhage Induced Intractable Miotic Pupil. A Reminder of Ciliospinal Sympathetic Center Ischemia Based Miosis: An Experimental Study. Turk Neurosurg 2019; 29:434-439. [PMID: 30984987 DOI: 10.5137/1019-5149.jtn.24446-18.1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
AIM To examine ischemic neurodegeneration of the ciliospinal center on permanent miosis following subarachnoid hemorrhage (SAH). MATERIAL AND METHODS Nineteen rabbits were examined in this study. The animals were divided into three groups, as control (GI, n=5), sham (GII, n=5) and study group (GIII, n=9). Pupil diameters were measured after giving 0.5 mL physiological saline for sham and autologous arterial blood for the study group into the cervico-thoracic subarachnoid space. After three weeks of follow up, the cervico-thoracic cord and bilateral superior cervical sympathetic ganglia were removed. The pupil diameter values were compared with degenerated neuron volumes of sympathetic ganglia and degenerated neuron densities of thoracic sympathetic nuclei which were studied by stereological methods. RESULTS The mean pupil diameter was 5180 ± 370 µm and the mean degenerated neuron density of the ciliospinal center was 4 ± 1/mm3 in animals of the control group (GI). These values were 9850 ± 610 εm, 10 ± 3/mm3 in sham (GII), and 7.010 ± 440 εm and 98 ± 21/mm3 in the study (GIII) groups. There was an inverse relationship between degenerated neuron density of the ciliospinal nuclei and pupil diameters. CONCLUSION We showed and reported for the first time that ciliospinal sympathetic center ischemia-induced neurodegeneration may have been responsible for permanent miosis following SAH.
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Affiliation(s)
- Mehmet Dumlu Aydin
- Ataturk University, Faculty of Medicine, Department of Neurosurgery, Erzurum, Turkey
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Aydin MD, Kanat A, Yolas C, Calik M. New insights of the fever following subarachnoid hemorrhage and introducing a new thermoregulator like structure in choroid plexuses; preliminary study. Acta Neurol Taiwan 2019; 28(1):1-11. [PMID: 31321759] [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: 06/10/2023]
Abstract
OBJECTIVE Vagal nerves and their thermoreceptors could regulate temperature of brain. Cerebrospinal fluid (CSF) is increased in the early phases of subarachnoid hemorrhage (SAH). We hypothesised that choroid plexuses probably innervated by vagal nerves may play a role on the regulation of brain temperature and studied this subject. METHODS This study was conducted on 32 rabbits, divided into four groups, with five rabbits in the control group (group I), five rabbits in the sham group (Group II), and 22 rabbits in the SAH group. In the SAH group, 7 of the animals were decapitated after 7 days of cisternal blood injections (Group III), and the other 15 animals were decapitated after 21 days of injections (Group IV). Brain temperature via laser thermometer 5 times a day during the experiment was measured. Normal and degenerated neuron density of nodose ganglia, water vesicles numbers of choroid plexuses were stereologicallyanalyzed. Statistical analysis was performed. RESULTS At histopathologic analysis of present study, thermo regulator like structure was noted and the mean number of this structure was estimated.The mean number of water-filled vesicles, thermo regulator like structure, in SAH-induced animals,brain temperature and degenerated neuron density of nodose ganglia was statistically different between the early decapitated group (group III) and the late decapitated group (group IV) (P less then 0.05). CONCLUSIONS We introduce a thermo regulator like structure, describe a new syndrome. In addition, it was noted thatwater-filled vesicles of CP are increased, brain temperature in nearly normal in the early phase of SAH due to likely irritation of vagal nerves. However in the late phase, mean number of water-filled vesicles numbers decreased in accordance with increased brain temperature with degenerative changes of the nodose ganglion.
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Affiliation(s)
- Mehmet D Aydin
- Ataturk University, Medical Faculty Department of Neurosurgery, Erzurum Turkey
| | - Ayhan Kanat
- Recep Tayyip Erdogan University, Medical Faculty, Department of Neurosurgery Rize Turkey
| | - Coskun Yolas
- Erzurum Regional Research and Education Hospital, Department of Neurosurgery, Erzurum, Turkey
| | - Muhammet Calik
- Ataturk University, Medical Faculty Department of Pathology Erzurum Turkey
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Aydın MD, Aydın N, Kanat A, Akca N, Ardic G, Yolas C, Altınkaynak K, Calik M. The sooth beneath the taste roseas in the urethra and first description of neuro-morpho-chemical mechanism of penile erectile posture in males: an experimental study. Int J Neurosci 2017; 128:663-669. [DOI: 10.1080/00207454.2017.1412961] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Mehmet Dumlu Aydın
- Department of Neurosurgery, Medical Faculty, Ataturk University, Erzurum, Turkey
| | - Nazan Aydın
- Neurology and Neurosurgery, Psychiatry Clinic, Bakirkoy Mazhar Osman Training and Research Hospital for Psychiatry, Istanbul, Turkey
| | - Ayhan Kanat
- Department of Neurosurgery, Medical Faculty, Recep Tayyip Erdogan University, Rize, Turkey
| | - Nezih Akca
- Department of Urology, Medical Faculty, Recep Tayyip Erdogan University, Rize, Turkey
| | - Gizem Ardic
- Department of Pharmacy, Rize Training and Research Hospital, Rize, Turkey
| | - Coskun Yolas
- Neurosurgery Clinic, Regional Training and Research Hospital, Erzurum, Turkey
| | - Konca Altınkaynak
- Biochemistry Clinic, Regional Training and Research Hospital, Erzurum, Turkey
| | - Muhammet Calik
- Department of Pathology, Medical Faculty, Ataturk University, Erzurum, Turkey
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Ozturk C, Ozdemir N, Aydin M, Findik H, Aydin N, Kabalar M, Kazdal H, Yolas C, Baykal O, Calik M, Kanat A. How Reliable Is Pupillary Evaluation Following Subarachnoid Hemorrhage? Effect of Oculomotor Nerve Degeneration Secondary to Posterior Communicating Artery Vasospasm: First Experimental Study. J Neurol Surg A Cent Eur Neurosurg 2017; 79:302-308. [DOI: 10.1055/s-0037-1608841] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Background and Study Aim Basic neurophysiologic principles of the light reflex are well known. However, the effects of degenerated axon densities of oculomotor nerves (OMNs) secondary to posterior communicating artery (PComA) vasospasm following subarachnoid hemorrhage (SAH) have not been investigated. Our aim was to study this subject.
Methods This study was conducted on 19 rabbits. There was a control group of five animals, a sham group of five animals in which saline was injected into the cisterna magna and a study group of nine animals in which homologous blood was injected into the cisterna magna. Pupillary diameters were measured for 1 week, then the animals were decapitated. The normal and degenerated axon densities of the OMNs were examined by stereological methods. Vasospasm indexes (VSIs) of posterior communicating arteries (PComAs) supplying OMNs were estimated and analyzed statistically.
Results The pupillary diameter was 5.439 ± 368 µm, and the mean axon density of the OMNs was 0.924 ± 324/mm3 in the control group. The pupillary diameter and degenerated axon density of the OMNs in animals of the sham group were 6.980 ± 0.370 µm and 36 ± 8/mm3, respectively. The pupillary diameter was 9.942 ± 653 µm, and degenerated axon density of the OMNs was 265 ± 57/mm3 in animals with SAH. The mean VSI values of PComAs were 0.927 ± 0.224 in the control group, 1.542 ± 0.257 in the sham group, and 2.321 ± 0.324 in the SAH group.
Conclusion We found a linear relationship between the axon density of the OMNs and pupillary diameters. High degenerated neuron density in the OMNs may be responsible for an unresponsive pupillary that has not been mentioned in the literature.
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Affiliation(s)
- Cengiz Ozturk
- Family Medicine, Osmangazi Health Center, Erzurum, Turkey
| | - Nuriye Ozdemir
- Department of Neurosurgery, Istanbul Training and Research Hospital, Istanbul, Turkey
| | - Mehmet Aydin
- Department of Neurosurgery Medical Faculty, Ataturk University, Erzurum, Turkey
| | - Huseyin Findik
- Department of Ophthalmology, Recep Tayyip Erdogan University, Rize, Turkey
| | - Nazan Aydin
- Psychiatry Clinic, Bakirkoy Training and Research Hospital for Psychiatry, Neurology and Neurosurgery, Istanbul, Turkey
| | - Mehmet Kabalar
- Department of Pathology Clinic, Regional Training and Research Hospital, Erzurum, Turkey
| | - Hizir Kazdal
- Department of Anesthesiology and Reanimation, Recep Tayyip Erdogan University, Rize, Turkey
| | - Coskun Yolas
- Department of Neurosurgery, Regional Training and Research Hospital, Erzurum, Turkey
| | - Orhan Baykal
- Department of Ophthalmology, Medical Faculty, Ataturk University, Erzurum, Turkey
| | - Muhammet Calik
- Department of Pathology, Medical Faculty, Ataturk University, Erzurum, Turkey
| | - Ayhan Kanat
- Department of Neurosurgery, Medical Faculty, Recep Tayyip Erdogan University, Rize, Turkey
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Senol O, Albayrak M, Demirkaya Miloglu F, Kadioglu Y, Calik M. Application of Photonics in Diagnosis of Papillary Thyroid Carcinoma Tissues through Raman Spectroscopy-Assisted with Chemometrics. ANAL LETT 2017. [DOI: 10.1080/00032719.2017.1309423] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Onur Senol
- Department of Analytical Chemistry, Faculty of Pharmacy, Ataturk University, Erzurum, Turkey
| | - Mevlut Albayrak
- Department of Medical Laboratory Techniques, Health Services Vocational Training School, Ataturk University, Erzurum, Turkey
| | - Fatma Demirkaya Miloglu
- Department of Analytical Chemistry, Faculty of Pharmacy, Ataturk University, Erzurum, Turkey
| | - Yucel Kadioglu
- Department of Analytical Chemistry, Faculty of Pharmacy, Ataturk University, Erzurum, Turkey
| | - Muhammet Calik
- Department of Pathology, Faculty of Medicine, Ataturk University, Erzurum, Turkey
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12
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Kanat A, Aydin MD, Bayram E, Kazdal H, Aydin N, Omeroglu M, Altinkaynak K, Kabalar ME, Yolas C, Ozturk C, Kepoglu U, Calik M. A New Determinant of Poor Outcome After Spontaneous Subarachnoid Hemorrhage: Blood pH and the Disruption of Glossopharyngeal Nerve–Carotid Body Network: First Experimental Study. World Neurosurg 2017; 104:330-338. [DOI: 10.1016/j.wneu.2017.04.105] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Revised: 04/16/2017] [Accepted: 04/17/2017] [Indexed: 12/16/2022]
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Kazdal H, Kanat A, Aydin MD, Yazar U, Guvercin AR, Calik M, Gundogdu B. Sudden death and cervical spine: A new contribution to pathogenesis for sudden death in critical care unit from subarachnoid hemorrhage; first report - An experimental study. J Craniovertebr Junction Spine 2017; 8:33-38. [PMID: 28250634 PMCID: PMC5324357 DOI: 10.4103/0974-8237.199870] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Context: Sudden death from subarachnoid hemorrhage (SAH) is not uncommon. Aims: The goal of this study is to elucidate the effect of the cervical spinal roots and the related dorsal root ganglions (DRGs) on cardiorespiratory arrest following SAH. Settings and Design: This was an experimental study conducted on rabbits. Materials and Methods: This study was conducted on 22 rabbits which were randomly divided into three groups: control (n = 5), physiologic serum saline (SS; n = 6), SAH groups (n = 11). Experimental SAH was performed. Seven of 11 rabbits with SAH died within the first 2 weeks. After 20 days, other animals were sacrificed. The anterior spinal arteries, arteriae nervorum of cervical nerve roots (C6–C8), DRGs, and lungs were histopathologically examined and estimated stereologically. Statistical Analysis Used: Statistical analysis was performed using the PASW Statistics 18.0 for Windows (SPSS Inc., Chicago, Illinois, USA). Intergroup differences were assessed using a one-way ANOVA. The statistical significance was set at P < 0.05. Results: In the SAH group, histopathologically, severe anterior spinal artery (ASA) and arteriae nervorum vasospasm, axonal and neuronal degeneration, and neuronal apoptosis were observed. Vasospasm of ASA did not occur in the SS and control groups. There was a statistically significant increase in the degenerated neuron density in the SAH group as compared to the control and SS groups (P < 0.05). Cardiorespiratory disturbances, arrest, and lung edema more commonly developed in animals in the SAH group. Conclusion: We noticed interestingly that C6–C8 DRG degenerations were secondary to the vasospasm of ASA, following SAH. Cardiorespiratory disturbances or arrest can be explained with these mechanisms.
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Affiliation(s)
- Hizir Kazdal
- Department of Anesthesiology and Reanimation, Medical Faculty, Recep Tayyip Erdogan University, Rize, Turkey
| | - Ayhan Kanat
- Department of Neurosurgery, Medical Faculty, Recep Tayyip Erdogan University, Rize, Turkey
| | - Mehmet Dumlu Aydin
- Department of Neurosurgery, Medical Faculty, Ataturk University, Erzurum, Turkey
| | - Ugur Yazar
- Department of Neurosurgery, Medical Faculty, Karadeniz Technical University, Trabzon, Turkey
| | - Ali Riza Guvercin
- Department of Neurosurgery, Medical Faculty, Karadeniz Technical University, Trabzon, Turkey
| | - Muhammet Calik
- Department of Neurosurgery, Medical Faculty, Karadeniz Technical University, Trabzon, Turkey
| | - Betul Gundogdu
- Department of Pathology, Medical Faculty, Ataturk University, Erzurum, Turkey
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Calik M, Yavas G, Calik SG, Yavas C, Celik ZE, Sargon MF, Esme H. Amelioration of radiation-induced lung injury by halofuginone: An experimental study in Wistar-Albino rats. Hum Exp Toxicol 2016; 36:638-647. [PMID: 27457799 DOI: 10.1177/0960327116660753] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
To evaluate effects of halofuginone (H) on radiation-induced lung injury (RILI), 60 rats were divided into six groups: Group (G) 1 control, G2 radiotherapy (RT) only, G3 and G4 2. 5 and 5 μg H and G5 and G6 RT + 2.5 and 5 μg H groups, respectively. A single dose of 12 Gy RT was given to both lungs. H was applied intraperitoneally with daily doses, until animals were killed at 6 and 16 weeks after RT. At 6th and 16th weeks of RT, five rats from each group were killed. Lung tissues were dissected for light and electron microscopy. Chronic inflammation, fibrosis and transforming growth factor-beta (TGF)-β scores of all study groups were significantly different at 6th and 16th week ( p < 0.001). Chronic inflammation, fibrosis and TGF-β scores of G2 were higher than G5 and G6 at 6th and 16th weeks of RT. At 16th week, fibrosis and TGF-β scores of G5 were higher than G6 ( p = 0.040 and 0.028, respectively). Electron microscopical findings also supported these results. Therefore, H may ameliorate RILI. The effect of the H was more prominent at higher dose and after long-term follow-up. These findings should be clarified with further studies.
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Affiliation(s)
- M Calik
- 1 Department of Thoracic Surgery, Konya Training and Research Hospital, Konya, Turkey
| | - G Yavas
- 2 Department of Radiation Oncology, Faculty of Medicine, Selcuk University, Konya, Turkey
| | - S G Calik
- 3 Department of Emergency Medicine, Meram Faculty of Medicine, Necmettin Erbakan University, Konya, Turkey
| | - C Yavas
- 2 Department of Radiation Oncology, Faculty of Medicine, Selcuk University, Konya, Turkey
| | - Z E Celik
- 4 Department of Pathology, Faculty of Medicine, Selcuk University, Konya, Turkey
| | - M F Sargon
- 5 Department of Anatomy, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - H Esme
- 1 Department of Thoracic Surgery, Konya Training and Research Hospital, Konya, Turkey
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Sarikaya S, Yasin S, Calik M, Yoldas T, Aksoy N, Yilmaz M. Acute phase reactants in generalized tonic-clonic epileptic patients. J Neurol Sci 2015. [DOI: 10.1016/j.jns.2015.08.1574] [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: 10/22/2022]
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Sarikaya S, Ciftci S, Yoldas T, Calik M, Sonmezler A, Aksoy N, Yilmaz M. Plasma total antioxidant status, antioxidant status and oxidative stress and their relationship to migraine disease. J Neurol Sci 2015. [DOI: 10.1016/j.jns.2015.08.580] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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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17
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Sarikaya S, Ciftci S, Yoldas T, Sonmezler A, Calik M, Aksoy N, Yilmaz M. Do serum lipid hydroperoxide and free sulfhydryl use for biochemical markers of migraine? J Neurol Sci 2015. [DOI: 10.1016/j.jns.2015.08.579] [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: 10/22/2022]
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18
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Demirci E, Daloglu FT, Calik M, Altun E, Sipal S, Borekci B. Changing trends in the incidence of ovarian neoplasia and its relationship with the risk factors: a report of 311 cases from north-eastern anatolia region. Eurasian J Med 2015; 47:48-55. [PMID: 25745345 DOI: 10.5152/eajm.2014.40] [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: 04/11/2014] [Accepted: 04/24/2014] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVE Ovarian cancer is one of the most common and lethal gynecologic malignancy. In Turkey, the 8(th) most commonly seen neoplasm is ovarian cancer. The risk factors of ovarian cancer are menstrual reproductive events including gravida, menarche and menopause status, and life style habits such as cigarette smoking and habitat. In this study we aimed to determine the risk factors leading to ovarian cancer in Turkish women population and show the tumor markers in this population. MATERIALS AND METHODS This study included 311 ovarian neoplasia cases diagnosed at the Pathology Department of Ataturk University in Erzurum over last seven years extending from 2005 to 2013. This study is a retrospective analysis basing on the pathology reports and accesible patient files. Serum tumor markers of the patients were retrospectively reported from their records. Conventional stained preparations existing in our archive examined by two pathologists as well independent of each other, and histopathologic diagnosis and the distribution of the sub-group was revised. RESULTS A total of 311 patients were included in this study in which patients were diagnosed at the Pathology Department of Ataturk University in Erzurum. Serous cystadenoma is the most common ovarian tumor followed by mucinous cystadenoma, germ cell tumors, and dysgerminoma. All of the tumor markers were significantly normal. CONCLUSION Upto our knowledge this was the first epidemiological study in Turkey. Analysis of each country's statistical information reflecting its own profile is also important. The relationship between the profiles of patients and types of ovarian neoplasia may give an idea about the risk factors of the disease in its region. Additionally, distribution of tumor markers might be considered for the discriminating of the benign or malign characters of the ovarian neoplasia.
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Affiliation(s)
- Elif Demirci
- Department of Pathology, Ataturk University Faculty of Medicine, Erzurum, Turkey
| | - Ferah Tuncel Daloglu
- Department of Pathology, Erzurum Training and Research Hospital, Erzurum, Turkey
| | - Muhammet Calik
- Department of Pathology, Ataturk University Faculty of Medicine, Erzurum, Turkey
| | - Eren Altun
- Department of Pathology, Ataturk University Faculty of Medicine, Erzurum, Turkey
| | - Sare Sipal
- Department of Pathology, Ataturk University Faculty of Medicine, Erzurum, Turkey
| | - Bunyamin Borekci
- Department of Gynecology and Obstetric, Faculty of Medicine, Ataturk University, Erzurum, Turkey
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Calik M, Calik I, Demirci E, Altun E, Gundogdu B, Sipal S, Gundogdu C. Goseki grade and tumour location influence survival of patients with gastric cancer. Asian Pac J Cancer Prev 2014; 15:1429-34. [PMID: 24606478 DOI: 10.7314/apjcp.2014.15.3.1429] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Owing to the variability of histopathological features and biological behaviour in gastric carcinoma, a great number of categorisation methods such as classical histopathologic grading, Lauren classification, the TNM staging system and the newly presented Goseki grading method are used by pathologists and other scientists. In our study, we aimed to investigate whether Goseki grade and tumour location have an effects on survival of gastric cancer cases. MATERIALS AND METHODS Eighty-four patients with gastric adenocarcinoma were covered in the investigation. The importance of Goseki grading system and tumour location were analysed in addition to the TNM staging and other conventional prognostic parameters. RESULTS The median survival time in our patients was 35 months (minimum: 5, maximum: 116). According to our findings, there was no relation between survival and tumour size (p=0.192) or classical histological type (p=0.270). In contrast, the Goseki grade and tumour location significantly correlated with survival (p=0.007 and p<0.001, respectively). Additionally, tumours of the intestinal type had a longer median survival time (60.0 months) than diffuse tumours (24.0 months). CONCLUSIONS In addition to the TNM staging system, tumour location and the Goseki grading system may be used as significant prognostic parameters in patients with gastric cancer.
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Affiliation(s)
- Muhammet Calik
- Department of Pathology, Faculty of Medicine, Ataturk University, Erzurum, Turkey E-mail :
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Kermen E, Orbak R, Calik M, Eminoglu DO. Tissue restoration after improper laser gingivectomy: A case report. World J Stomatol 2014; 3:25-29. [DOI: 10.5321/wjs.v3.i3.25] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2014] [Revised: 06/12/2014] [Accepted: 07/17/2014] [Indexed: 02/06/2023] Open
Abstract
We report the case of 27-year-old female patient applied to our clinic with several pain at her upper teeth and weakness complaints. Anamnesis revealed that she experienced laser gingivectomy to have remarkable teeth. Clinical examination showed that maxillar alveolar bone was partially uncovered with gingivae and periosteum. Interproximal necrosed area was observed. She had sensitivity at her maxillar anterior teeth. Furthermore, she was so anxious and depressed. In order to ensure more blood supply and clot formation, perforations on uncovered cortical bone was prepared. Avoiding from infection antibiotic, antiseptic gel and for epithelization vitamin E gel were prescribed. During one month she was recalled every third day. Recall times diminished periodically, as new tissue evolves. Although laser’s irreversible photothermal effects on soft and hard tissue, after a year all denuded areas were covered with healthy tissues without any surgical procedures. Histopathologic comparing showed severe lymphocyte infiltration and increased fibrosis and kollagenization in restored gingiva, additionally epithelial loss was observed. Since there is not a case report about the complications of laser gingivectomy in literature, we tried to represent a treatment plan that may be elucidative for clinicians.
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Araz O, Demirci E, Ucar EY, Calik M, Karaman A, Durur-Subasi I, Orsal E, Subasi M, Daloglu F, Akgun M. Roles of Ki-67, p53, transforming growth factor-β and lysyl oxidase in the metastasis of lung cancer. Respirology 2014; 19:1034-9. [PMID: 24995672 DOI: 10.1111/resp.12345] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [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: 02/03/2014] [Revised: 04/28/2014] [Accepted: 05/01/2014] [Indexed: 11/26/2022]
Abstract
BACKGROUND AND OBJECTIVE Most lung cancer (LC) patients have metastatic disease at time of diagnosis, which influence the treatment regimen and is the most important prognostic factor. The main purpose of our study was to evaluate the relationship between cell proliferation (Ki-67 label index), p53, transforming growth factor-β (TGF-β) and lysyl oxidase (LOX), and the metastatic stages of different lung cancers. The secondary aim was to correlate these parameters with the standardized uptake value (SUVmax) of the primary lesion during positron emission tomography-computed tomography (PET-CT). METHODS Eighty-five treatment-naive patients with LC were enrolled. All patients were examined with PET-CT. Ki-67, p53, TGF-β and LOX were evaluated histopathologically. RESULTS Small cell lung cancer (SCLC) showed the most intense staining in all parameters. A well-differentiated adenocarcinoma (AC) demonstrated a more diffuse and intense staining than squamous cell carcinoma (SCC). There was no statistically significant relationship between the four parameters and metastases of SCLC and SCC. However, a significant relationship between TGF-β, LOX and metastatic AC was demonstrated with regards to diffusivity and intensity. p53 and Ki-67 did not show a significant relationship. No correlation between SCLC and SCC and SUVmax was found. However, in AC, the diffusivity and intensity of the LOX and p53 staining showed a statistically significant relationship to the SUVmax. CONCLUSIONS LOX and TGF-β may play roles in metastatic AC. LOX and TGF-β may become markers of metastatic disease and inhibition could be explored for treatment.
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Affiliation(s)
- Omer Araz
- Department of Pulmonary Diseases, Ataturk University School of Medicine, Erzurum, Turkey
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Demirci E, Ferah I, Gundogdu C, Ozkanlar S, Baygutalp NK, Bayir Y, Calik M, Ayaz G. Endothelin receptor inhibition with bosentan delays onset of liver injury in streptozotocin-induced diabetic condition. Drug Res (Stuttg) 2014; 65:272-80. [PMID: 24918345 DOI: 10.1055/s-0034-1377024] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
BACKGROUND This study was designed to investigate the protective effects of bosentan an orally active non-peptide mixed ETA/ETB receptor antagonist, on liver injury in streptozotocin-induced diabetic rats. METHODS 24 Albino-Wistar rats were randomly divided into 4 groups: healthy (Group 1), diabetic (Group 2) (60 mg/kg of streptozotocin i.p.), diabetic treated with bosentan 50 mg/kg (Group 3) and diabetic treated with bosentan 100 mg/kg (Group 4). The treatment of bosentan was initiated after streptozocin injection and continued for 60 days. RESULTS Liver from diabetic rats showed significant increase in malondialdehyde (MDA) level and significant decrease in glutathione (GSH), and superoxide dismutase (SOD) activity. Endothelin (ET-1), tumor necrosis factor (TNF-α) and transforming growth factor beta (TGF-β) gene expression significantly increased in the diabetic groups in the rat liver tissue. Bosentan treatment showed a significant up-regulatory effect on ET-1, TNF-α and TGF-β mRNA expression. Results from histopathological evaluation of the liver were in accordance with our biochemical and molecular results. CONCLUSIONS These data provide clear evidence that bosentan treatment is associated with promising hepatoprotective effect against diabetes-induced liver damage via reduction of cell inflammation and oxidative damage. These data suggest that ET receptors may be an important actor in diabetes-related liver damage, and blockage of these receptors may become a target for preventing diabetic complications in the future.
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Affiliation(s)
- E Demirci
- Department of Pathology, Ataturk University, Faculty of Medicine, Erzurum, Turkey
| | - I Ferah
- Department of Pharmacology, Ataturk University, Faculty of Pharmacy, Erzurum, Turkey
| | - C Gundogdu
- Department of Pathology, Ataturk University, Faculty of Medicine, Erzurum, Turkey
| | - S Ozkanlar
- Department of Biochemistry, Ataturk University, Faculty of Veterinary Medicine, Erzurum, Turkey
| | - N K Baygutalp
- Department of Pharmacy Management, Ataturk University, Faculty of Pharmacy, Erzurum, Turkey
| | - Y Bayir
- Department of Biochemistry, Ataturk University, Faculty of Pharmacy, Erzurum, Turkey
| | - M Calik
- Department of Pathology, Ataturk University, Faculty of Medicine, Erzurum, Turkey
| | - G Ayaz
- Department of Pharmacology, Ataturk University, Faculty of Medicine, Erzurum, Turkey
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Demirci E, Daloglu F, Gundogdu C, Calik M, Sipal S, Akgun M. Incidence and clinicopathologic features of primary lung cancer: a North-Eastern Anatolia region study in Turkey (2006-2012). Asian Pac J Cancer Prev 2014; 14:1989-93. [PMID: 23679305 DOI: 10.7314/apjcp.2013.14.3.1989] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Lung cancer is the most frequent cancer among men and second highest among women overall, including in Turkey. Cigarette smoking is the most important etiologic factor for the development of cancer in both men and women. OBJECTIVE To determine the lung cancer incidence in Northeastern Anatolia Region of Turkey with a focus on clinical properties, cancer subtypes, the relationships of tumors with cigarette smoking and radiological properties of the lesions. MATERIALS AND METHODS In a retrospective study design, 566 lung cancer cases diagnosed at the Pathology Department of Ataturk University in Erzurum over the last seven years extending from January 2006 to June 2012 were investigated. The results were compared with statistical analyses. RESULTS The most common histopathological subtype of primary bronchogenic carcinoma in our study was found to be the squamous cell carcinoma, 46.1% (261 out of 566), and the second was small cell lung carcinoma 15.7% (89 out of 566). Based on our data, an overall male predominance was noted with a male/female ratio of 6.1/1. While 296 (52.2%) of the patients were found to be smokers at the time of diagnosis, 125 (22.0%) were nonsmokers and 145 (25.6%) were ex-smokers. Smoking status was found to have a strong correlation with primary lung cancer (p <0.05), and there were significant differences between males and females (p<0.001). CONCLUSION Although relative prominence of subtypes of lung cancers differ between Turkish and other populations, lung cancer overall remains as an important health problem in Turkey. Our findings stress the critical need for effective cancer prevention programs such as anti-smoking campaigns.
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Affiliation(s)
- Elif Demirci
- Department of Pathology, Medical Faculty, Ataturk University, Erzurum, Turkey
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Miloglu O, Yalcin E, Dagistan S, Calik M, Ertas U, Bayrakdar I. A rare case of bilateral complex odontomas: Clinical, radiological and histopathological findings. J Oral Maxillofac Radiol 2014. [DOI: 10.4103/2321-3841.144681] [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] Open
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25
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Bozkus F, Sarıkaya S, Kocaturk O, Calik M, Abuhandan M, Altintas A, Koca B, Guler OK, Aksoy N, Ulas T. Evaluation of preoperative and postoperative S-100B levels in children with chronic adenotonsillar hypertrophy: preliminary results. Eur Rev Med Pharmacol Sci 2014; 18:1549-1553. [PMID: 24899616] [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: 06/03/2023]
Abstract
OBJECTIVES Upper air obstruction leads hypoxia, it is also known that S-100B levels increase by glial activations indicate cerebral hypoxic injury. This study aimed to evaluate the preoperative and postoperative S-100B levels in children with chronic adenotonsillar hypertrophy. PATIENTS AND METHODS The study comprised 40 patients with indications for tonsillectomy and/or adenoidectomy following a diagnosis of chronic adenotonsillar hypertrophy and 40 age-gender matched control patients. Blood samples were taken from the patients preoperatively and at four weeks postoperatively. Preoperative and postoperative serum S-100B levels were analyzed. RESULTS The serum S-100B levels in the preoperative period were found to be significantly higher compared to those of the control group (p < 0.05). The S-100B levels were significantly decreased in the postoperative period (p < 0.05). CONCLUSIONS The development of chronic adenotonsillar hypertrophy would play a role in increased S-100B levels. This indicates that neuronal damage would exists in patients with chronic adenotonsillar hypertrophy.
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Affiliation(s)
- F Bozkus
- Department of Otolaryngology Head and Neck Surgery, Harran University, Faculty of Medicine, Sanliurfa, Turkey.
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Calik M, Tuncer FN, Sarikaya S, Karakas O, Cece H, Iscan A. A case of L-2 hydroxyglutaric aciduria presenting as febrile seizure. Genet Couns 2014; 25:363-367. [PMID: 25804013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
L-2 hydroxyglutaric aciduria (L2HGA) is a rare, infantile-onset, autosomal recessive organic aciduria affecting exclusively the central nervous system. A case is reported here of L2HGA presenting with macrocephaly and febrile seizure. Although there have been reports of epilepsy associated with L2HGA, to the best of our knowledge this is the second case in literature of febrile seizure in a patient with L2HGA. This report suggests that detailed neurological evaluation of macrocephalic children with febrile convulsion is important. Moreover, metabolic and genetic investigations may be necessary for these kinds of patients.
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Araz O, Demirci E, Yilmazel Ucar E, Calik M, Pulur D, Karaman A, Yayla M, Altun E, Halici Z, Akgun M. Comparison of reducing effect on lung injury of dexamethasone and bosentan in acute lung injury: an experimental study. Multidiscip Respir Med 2013. [DOI: 10.4081/mrm.2013.586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background: Different medical therapies are employed in acute lung injury (ALI) but there is still a debate about the efficacy of these drugs. Among these therapies steroids are clinically applied and bosentan is experimentally studied. The aim of this study was to evaluate the efficacy of these two drugs to treat inflammation in ALI by histopathological comparison. Methods: The five experimental groups (n = 5 per group) were: saline control (Group I); lipopolysaccharide (LPS) + saline (Group II); LPS + dexamethasone (Group III); LPS + 50 mg/kg bosentan (Group IV); and LPS + 100 mg/kg bosentan (Group V). Bosentan was administered orally one hour before and 12 hours after LPS treatment. Dexamethasone was administered intraperitoneally in three doses of 1 mg/kg; one dose was co-administered with LPS and the other two doses were given respectively 30 minutes before and after LPS treatment. Vasodilation-congestion, hemorrhage, polymorphonuclear leukocyte (PMN) infiltration, mononuclear leukocyte (MNL) infiltration, alveolar wall thickening, alveolar destruction/emphysematous appearance, and focal organization were the parameters used as criteria for evaluating inflammation and efficacy of treatment. Results: Compared to the LPS-only group (Group II), dexamethasone treatment (Group III) resulted in significant improvements in vasodilation-congestion, hemorrhage, PMN and MNL infiltration, alveolar wall thickening and emphysematous areas. Treatment with 50 mg/kg dose of bosentan (Group IV) also resulted in significant improvements in hemorrhage, PMN and MNL infiltration, alveolar wall thickening and alveolar destruction. Reducing lung injury and reparative effects of 100 mg/kg bosentan were significant in all parameters. Conclusions: Bosentan is as effective as dexamethasone for treating lung injury in ALI. Bosentan at 100 mg/kg can be recommended as a first treatment choice based on its significant reducing lung injury and reparative effects.
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Kantarci M, Bayraktutan U, Karabulut N, Aydinli B, Ogul H, Yuce I, Calik M, Eren S, Atamanalp SS, Oto A. Alveolar echinococcosis: spectrum of findings at cross-sectional imaging. Radiographics 2013; 32:2053-70. [PMID: 23150858 DOI: 10.1148/rg.327125708] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Alveolar echinococcosis is a rare parasitic disease caused by the fox tapeworm Echinococcus multilocularis, which is endemic in many parts of the world. Without timely diagnosis and therapy, the prognosis is dismal, with death the eventual outcome in most cases. Diagnosis is usually based on findings at radiologic imaging and in serologic analyses. Because echinococcal lesions can occur almost anywhere in the body, familiarity with the spectrum of cross-sectional imaging appearances is advantageous. Echinococcal lesions may produce widely varied imaging appearances depending on the parasite's growth stage, the tissues or organs affected, and the presence of associated complications. Although the liver is the initial site of mass infestation by E multilocularis, the parasite may disseminate from there to other organs and tissues, such as the lung, heart, brain, bones, and ligaments. In severe infestations, the walls of the bile ducts and blood vessels may be invaded. Disseminated parasitic lesions in unusual locations with atypical imaging appearances may make it difficult to narrow the differential diagnosis. Ultrasonography, computed tomography (CT), magnetic resonance (MR) imaging with standard and diffusion-weighted sequences, and MR cholangiopancreatography all provide useful information and play complementary roles in detecting and characterizing echinococcal lesions. Cross-sectional imaging is crucial for differentiating echinococcosis from malignant processes: CT is most useful for depicting the peripheral calcifications surrounding established echinococcal cysts, and MR imaging is most helpful for identifying echinococcosis of the central nervous system.
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Affiliation(s)
- Mecit Kantarci
- Department of Radiology, Atatürk University, School of Medicine, 200 Evler Mah. 14. Sok No 5, Dadaskent, Erzurum 25090, Turkey.
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Abuhandan M, Calik M, Almaz V, Taskın A, Cakmak A, Selek S. An evaluation of neuropeptide Y status in subacute sclerosing panencephalitis patients. Clin Ter 2013; 164:e159-e162. [PMID: 23868630 DOI: 10.7417/ct.2013.1561] [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 This study aimed to evaluate the neuropeptide Y values of patients with subacute sclerosing panencephalitis. MATERIALS AND METHODS The study comprised 38 patients diagnosed with subacute sclerosing panencephalitis at our clinic, who were being routinely followed-up, together with a control group of 36. Using the Risk and Haddad classification for clinical staging, 16 patients were determined as Stage II and 22 patients as Stage III. Neuropeptide Y values were measured by Enzyme Immunoassay methods. RESULTS The neuropeptide Y values of the all patients with subacute sclerosing panencephalitis were found to be significantly high compared to the control group (p<0.01). The neuropeptide Y values of the Stage III group were found to be significantly high compared to the Stage II and control groups (p<0.05). The neuropeptide Y values of the Stage II group were not determined to be significant compared to the control group (p≤0.05). CONCLUSIONS Neuropeptide Y can be considered a useful parameter to confirm diagnosis at advanced stages and to establish differences between stages in patients with subacute sclerosing panencephalitis.
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Affiliation(s)
- M Abuhandan
- Department of Pediatrics, Faculty of Medicine, Harran University, Sanliurfa, Turkey.
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Kurt A, Ingec M, Isaoglu U, Yilmaz M, Cetin N, Calik M, Polat B, Akcay F, Gundogdu C, Suleyman H. An investigation about the inhibition of acute ischemia/reperfusion damage by dexmedetomidine in rat ovarian tissue. Gynecol Endocrinol 2013; 29:222-5. [PMID: 23230861 DOI: 10.3109/09513590.2012.665104] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Reperfusion has always been "the emergency intervention" to ischemic tissue. For a given period of time, tissue injury due to ischemia and reperfusion is more serious than injury due to ischemia only. Groups were as: Group 1: 25 µg/kg dexmedetomidine + ischemia/reperfusion group. Group 2: 10 mg/kg yohimbine +25 µg/kg dexmedetomidine + ischemia/reperfusion group. Group 3: Ischemia/reperfusion (control) group. Group 4: Healthy rats. Rat ovaries were exposed to a 3-hour ischemia and then reperfusion ensured for 2 hours. After ischemia/reperfusion, total glutathione, malondialdehyde, 8-hydroxyguanine levels and histopathological investigation were studied. The highest total glutathione and the lowest malondialdehyde and DNA damage levels were determined in dexmedetomidine group when compared to control group. The difference between yohimbine + dexmedetomidine and the control group was insignificant. Dexmedetomidine protects the ovarian tissue of the rat from I/R injury. It is hypothesized that this protective effect of dexmedetomidine is mediated by the α-2 adrenergic receptors. Dexmedetomidine could be useful for attenuation of tissue damage after I/R and prevention of I/R-related complications.
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Affiliation(s)
- Ali Kurt
- Department of Pathology, Education and Research Hospital, Erzurum, Turkiye
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Caglayan AO, Per H, Akgumus G, Gumus H, Baranoski J, Canpolat M, Calik M, Yikilmaz A, Bilguvar K, Kumandas S, Gunel M. Whole-exome sequencing identified a patient with TMCO1 defect syndrome and expands the phenotic spectrum. Clin Genet 2013; 84:394-5. [PMID: 23320496 DOI: 10.1111/cge.12088] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2012] [Revised: 12/24/2012] [Accepted: 12/29/2012] [Indexed: 11/26/2022]
Affiliation(s)
- A O Caglayan
- Department of Neurosurgery; Department of Neurobiology; Department of Genetics, Center for Human Genetics and Genomics and Program on Neurogenetics, Yale School of Medicine, New Haven, CT, USA; Department of Medical Genetics, Kayseri Education and Research Hospital, Kayseri, Turkey
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Isaoglu U, Yilmaz M, Calik M, Polat B, Bakan E, Kurt A, Albayrak Y, Suleyman H. Biochemical and histopathological investigation of the protective effect of disulfiram in ischemia-induced ovary damage. Gynecol Endocrinol 2012; 28:143-7. [PMID: 21756070 DOI: 10.3109/09513590.2011.589922] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
It was biochemically and histopathologically investigated whether disulfiram has protective effects on ischemia-induced ovary damage. For this purpose, levels of tGSH, superoxide dismutase (SOD), malondialdehyde (MDA), and 8-OH Gua/Gua were investigated in ischemic rat ovary tissue. Results show that used doses of disulfiram (10, 25, and 50 mg/kg) prevent MDA, a product of ischemia-induced lipid peroxidation, formation in female rat ovary tissue and prevent decrease of enzymatic and non-enzymatic (SOD, GSH) antioxidant parameters. Additionally, all doses of disulfiram significantly prevent DNA damage when compared to control group. Fewer histopathological findings were observed in tissues with higher antioxidant levels and lower oxidant and DNA damage levels.
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Affiliation(s)
- Unal Isaoglu
- Nenehatun Obstetrics and Gynecology Hospital, Erzurum, Turkey
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Eke GH, Iscan A, Cece H, Calik M. A mutation of aspartoacylase gene in a Turkish patient with Canavan disease. Genet Couns 2012; 23:9-12. [PMID: 22611636] [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: 06/01/2023]
Abstract
Canavan disease (CD) is an autosomal recessive inherited disorder characterized by spongy degeneration of the brain. The deficiency of aspartoacylase (ASPA), resulting in the accumulation of N-acetyl aspartic acid (NAA) in the brain, plays an important role in the pathogenesis of the disease. The cardinal features of this neurodegenerative disease are macrocephaly, mental retardation, and hypotonia. Magnetic resonance imaging (MRI) of the brain generally shows diffuse white matter degeneration and also elevated excretion of urinary NAA is usually seen. A large number of mutations were identified to date. We report here a 9 months old girl with Canavan Disease and a homozygous c.79G>A mutation in the ASPA gene, detected for the first time in Turkish population.
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Affiliation(s)
- Gungor H Eke
- Erciyes University, Faculty of Medicine, Department of Pediatrics, Kayseri, Turkey.
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Ingec M, Calik M, Gundogdu C, Kurt A, Yilmaz M, Isaoglu U, Salman S, Akcay F, Suleyman H. Biological and histopathological investigations of moclobemide on injured ovarian tissue following induction of ischemia-reperfusion in rats. Int J Fertil Steril 2012; 6:19-26. [PMID: 25505507 PMCID: PMC4260643] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2011] [Accepted: 12/04/2011] [Indexed: 11/20/2022]
Abstract
BACKGROUND The effects of moclobemide on damaged ovarian tissue induced by ischemia- reperfusion and damaged contralateral ovarian tissue were investigated in rats, biochemically and histologically. MATERIALS AND METHODS In this experimental study, 40 rats were equally divided into four groups: 10 mg/kg moclobemide, 20 mg/kg moclobemide, ischemia/reperfusion control, and intact control groups. A 2-2.5-cm-long vertical incision was made in the lower abdomen of each rat in order to reach the ovaries, after which a vascular clip was placed on the lower side of the right ovary of each animal in the two treatment groups and the ischemia-reperfusion control group, but not in the healthy (intact control) animal group. The purpose of this procedure was to create ischemia over the course of three hours, then the clips were unclamped to provide reperfusion for the next two hours. At the end of the two hours of reperfusion, all the animals were killed by high-dose anaesthesia and their ovaries were taken and subjected to histological and biochemical (malondialdehyde, nitric oxide, glutathione) studies. RESULTS The obtained results showed that moclobemide suppressed nitric oxide and malondialdehyde production in the ischemia-reperfusion damage area, and prevented the decrease in endogenous antioxidant levels (glutathione) in the rat ovarian tissue. Moclobemide also prevented infiltration of leukocytes to the ovarian tissue. These results showed that moclobemide protected ovarian tissue against ischemiareperfusion injury. CONCLUSION This study shows that moclobemide represses malondialdehyde and nitric oxide production in the rat ovarian tissue subjected to ischemia-reperfusion injury and keeps the endogenous antioxidant glutathione level from decreasing. Moclobemide also inhibits leukocytic migration into ovarian tissue following ischemia-reperfusion injury. From these results, it is suggested that moclobemide can be used in the treatment of ovarian ischemia-reperfusion injury.
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Affiliation(s)
- Metin Ingec
- 1. Department of Obstetrics and Gynecology, Medical Faculty, Ataturk University, Erzurum, Turkey
| | - Muhammet Calik
- 2. Department of Pathology, Medical Faculty, Ataturk University, Erzurum, Turkey
| | - Cemal Gundogdu
- 2. Department of Pathology, Medical Faculty, Ataturk University, Erzurum, Turkey
| | - Ali Kurt
- 3. Department of Pathology, Education and Research Hospital, Erzurum, Turkey
| | - Mehmet Yilmaz
- 4. Nene Hatun Obstetrics and Gynecology Hospital, Erzurum, Turkey
| | - Unal Isaoglu
- 4. Nene Hatun Obstetrics and Gynecology Hospital, Erzurum, Turkey
| | | | - Fatih Akcay
- 6. Department of Biochemistry, Medical Faculty, Ataturk University, Erzurum, Turkey
| | - Halis Suleyman
- 7. Department of Pharmacology, Medical Faculty, Ataturk University, Erzurum, Turkey,Department of PharmacologyMedical FacultyAtaturk University5240ErzurumTurkey
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Yilmaz A, Aydin MD, Kanat A, Musluman AM, Altas S, Aydin Y, Calik M, Gursan N. The effect of choroidal artery vasospasm on choroid plexus injury in subarachnoid hemorrhage: experimental study. Turk Neurosurg 2011; 21:477-82. [PMID: 22194103 DOI: 10.5137/1019-5149.jtn.4204-11.1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
AIM We examined whether vasospasm of choroidal arteries (ChAs) may be resulted in ischemic injury in choroid plexus (CP) after subarachnoid hemorrhage (SAH). MATERIAL AND METHODS This study has been conducted on 30 rabbits. Eight, fourteen and eight of them were used as control, SAH and SHAM groups, respectively. The volumes of choroidal arteries were examined and measured by using the micrometric microscope barr. Ischemic morphological changes of the choroid plexus cells and villus were examined as follows: cellular shrinkage (1 point), cytoplasmic condensation (2 points), angulation (3 points) and villus desquamation (4 points) were considered as 1st, 2nd, 3rd, 4th degree downward choroid plexus degeneration criteria. Degeneration scores of 1 to 4 criteria were calculated by summing the exacerbated ones with the existing one. RESULTS Choroidal artery diameter&volume, and CP degeneration scores in three groups were evaluated: The mean volumes were 1.080 ± 0.650 mm³, 0.907 ± 0.330 mm³, 0.480 ± 0.175 mm³ and the degeneration scores of choroidal plexuses were scored as 0 and 1- 1, and 4- 3 and 10 in the control, SHAM and SAH groups respectively. A significant correlation between the degree of vasospasm and CP degeneration was found. CONCLUSION Vasospasm of choroidal arteries may be at a serious degree in cases with SAH incurs damages on choroid plexuses, and affects structures which play important roles in immune, endocrine, detoxifying, thermoregulatory, and secretory functions of the brain resulting in worsened prognosis.
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Affiliation(s)
- Adem Yilmaz
- Sisli Etfal Education and Research Hospital, Department of Neurosurgery, Istanbul, Turkey
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Ingec M, Isaoglu U, Yilmaz M, Calik M, Polat B, Alp HH, Kurt A, Gundogdu C, Suleyman H. Prevention of ischemia-reperfusion injury in rat ovarian tissue with the on-off method. J Physiol Pharmacol 2011; 62:575-582. [PMID: 22204806] [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] [Received: 07/06/2011] [Accepted: 09/16/2011] [Indexed: 05/31/2023]
Abstract
Ischemia is defined as cell death caused by insufficient perfusion of the tissue due to reduction in arterial or venous blood flow, depletion of cellular energy storages, and accumulation of toxic metabolites. The positive effects of controlled reperfusion are known and are used clinically. But the positive effects of controlled reperfusion on ovarian tissue have not been seen in the literature yet. The biochemical and histopathological comparative investigation of rat ovaries that were experimentally exposed to ischemia (IG), ischemia-reperfusion (I/R), and ischemia-controlled reperfusion (ICR) was aimed. Forty rats were divided into four groups (10 rats per group). First group: 3 h ischemia by vascular clips on ovarian tissue. Second group: 3 h ischemia + 1 h reperfusion. Third group: 3 h ischemia + 1 h controlled reperfusion (on-off method: controlled reperfusion by opening and closing the clips (on/off) in 10-second intervals, for 5 times for a total of 100 seconds). Fourth group: healthy rats. Biochemical (tGSH, MDA, and DNA damage level and SOD activity) and histopathological analysis were performed. The highest glutathione and superoxide dismutase measurements were found in ischemia/controlled reperfusion group among the ischemia or ischemia/reperfusion groups. Similarly the damage indicators (malondialdehyde, DNA damage level and histopathological damage grade) were the lowest in ischemia/controlled reperfusion group. These results indicate that controlled reperfusion can be helpful in minimizing ischemia-reperfusion injury in ovarian tissue exposed to ischemia for various reasons (ovarian torsion, tumor, etc.).
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Affiliation(s)
- M Ingec
- Ataturk University, Medical Faculty, Department of Obstetrics and Gynecology, Erzurum, Turkiye
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Kurt A, Isaoglu U, Yilmaz M, Calik M, Polat B, Hakan H, Ingec M, Suleyman H. Biochemical and histological investigation of famotidine effect on postischemic reperfusion injury in the rat ovary. J Pediatr Surg 2011; 46:1817-23. [PMID: 21929996 DOI: 10.1016/j.jpedsurg.2011.04.092] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2011] [Revised: 03/02/2011] [Accepted: 04/27/2011] [Indexed: 11/18/2022]
Abstract
BACKGROUND/PURPOSE In this study, an investigation was performed on the ovarian tissue of rats subjected to ischemia-reperfusion for the effect of famotidine on certain parameters of oxidation-antioxidation, cell DNA damage, and histological appearance. METHODS The effects of famotidine on certain parameters of oxidation-antioxidation (total glutathione [tGSH], superoxide dismutase [SOD], malondialdehyde) and cellular DNA injury in the ovarian tissue of rats subjected to ischemia-reperfusion were investigated and underwent histological examination. RESULTS The results show levels of 5.2 ± 0.6 nmol/g protein for tGSH, 8.3 ± 0.8 U/g for SOD activity, and 7.7 ± 0.9 μmol/g protein for malondialdehyde (P < .0001 when compared with controls) in ovarian tissue subjected to ischemia-reperfusion following famotidine treatment. The tGSH levels in control rats and in a healthy animal group were, respectively, 1.76 ± 0.7 and 5.5 ± 0.3 nmol/g protein (P < .0001). The SOD activity was 3.2 ± 0.9 U/g in control and 9.2 ± 0.6 U/g in healthy animal tissues. The differences between the values in the treatment and the control group, and between the healthy animal group and the control group were both highly significant (P < .0001). It was also observed that famotidine prevented, to a significant extent, an increase in the level of 8-hydroxy-2-deoxyguanine/guanine, a DNA damage product, as compared with the control group. CONCLUSION These biochemical and histological results show that famotidine protects the ovarian tissue from ischemia-reperfusion injury.
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Affiliation(s)
- Ali Kurt
- Department of Pathology, Education and Research Hospital, Erzurum, Turkiye
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Davut O, Yakup G, Sevgi B, Senoglu M, Kalender AM, Calik M. The topographical features and variations of nervus ischiadicus in human fetuses. BRATISL MED J 2011; 112:475-478. [PMID: 21863622] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
BACKGROUND We aimed to investigate the topographical features and variations of ischiadic nerve during prenatal period in human. METHODS Our study was conducted on lower extremities of 34 human fetal cadavers who were free of any anomalies and were obtained from the department of pathology of our faculty. RESULTS When the development of topographical features of ischiadic nerve is considered according to the gestational weeks, it was shown that the distances increased in accordance with the age and there was a positive correlation between the two (p < 0.01), however the width of the ischiadic nerve did not increase similarly and there was no significant correlation between its width and the age (p > 0.01). CONCLUSIONS Understanding the structure and course of ischiadic nerve in both gluteal and femoral regions is important during all interventions to these regions due to the potential damage on the nerve itself. The knowledge of topographical features of ischiadic nerve in the prenatal period and its relations with reference points that are used especially in childhood and adults will help to follow up the variations during postnatal and grow up periods (Tab. 2, Fig. 4, Ref. 13).
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Affiliation(s)
- O Davut
- Department of Anatomy, Faculty of Medicine, Kahramanmaras Sutcu Imam University, Kahramanmaras, Turkey.
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Yapanoglu T, Aksoy Y, Gursan N, Ozbey I, Ziypak T, Calik M. Antiapoptotic effects of dehydroepiandrosterone on testicular torsion/detorsion in rats. Andrologia 2008; 40:38-43. [PMID: 18211300 DOI: 10.1111/j.1439-0272.2008.00806.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
In the present study, we aimed to evaluate the effects of dehydroepiandrosterone (DHEA) on apoptosis of testicular germ cells after repair of testicular torsion in rats. Twenty-four adult male Sprague-Dawley rats were randomly divided into four groups, with six rats in each group: sham operation, torsion/detorsion (T/D), T/D + vehicle, and T/D + DHEA. Three hours before detorsion, 50 mg kg(-1) DHEA was given intraperitoneally to T/D + DHEA group. In all groups, bilateral orchiectomies were performed and both testicles were histologically examined, with apoptosis detected using the in situ DNA fragmentation [terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate nick-end labeling (TUNEL)] system, with morphological damage detected using a four-level grading scale in each specimen. The testes of the sham group showed a normal histology. In T/D and T/D + vehicle groups, apoptotic spermatogonia and spermatocyte number were significantly higher than in the sham group (P < 0.01 for all). The T/D + DHEA group showed a reduction in apoptotic spermatocyte and spermatogonia number in seminiferous epithelia compared with T/D group (P < 0.01 for both). Apoptotic cell number of contralateral testes did not reveal any significant differences among these groups (P > 0.05). Specimens from T/D and T/D + vehicle had a significantly greater histological injury than sham and T/D + DHEA groups in the ipsilateral testes (P < 0.01 for both). Therefore, the results suggest that DHEA may be a protective agent for preventing apoptosis caused by testicular torsion.
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Affiliation(s)
- T Yapanoglu
- Department of Urology, School of Medicine, Ataturk University, Erzurum, Turkey
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