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Gündogdu B, Erdem H, Çalık M, Gürsan N, Demirtaş R. Evaluation of Oral Mucosal Biopsy. Oral Surg Oral Med Oral Pathol Oral Radiol 2015. [DOI: 10.1016/j.oooo.2014.07.182] [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: 10/24/2022]
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2
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Doğan M, Gündoğdu B, Erdem H, Bilen H, Gürsan N, Ceylan O. Intraoral Malignant Melanoma: An Illustrative Report of Two Case. Oral Surg Oral Med Oral Pathol Oral Radiol 2015. [DOI: 10.1016/j.oooo.2014.07.465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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3
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Aydın MD, Aydın N, Dane Ş, Gündoğdu C, Gürsan N, Akçay F, Serarslan Y. Taste bud-like structures in penile tissues and a predictive neural mechanism of male orgasm: A preliminary hypothesis based on histological evidence. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.npbr.2014.06.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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4
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Albayrak A, Gürsan N, Güngoğdu C. Prognostic significance of c-erbB-2 and p53 expression in colorectal carcinoma. J Clin Exp Invest 2014. [DOI: 10.5799/ahinjs.01.2014.01.0364] [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: 11/23/2022] Open
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Abstract
OBJECTIVE Colorectal carcinomas are the most frequent tumors of the gastrointestinal tract. β-catenin, which is related to cadherins, is a cytoplasmic protein responsible for intercellular adhesion. It is also an important component in the Wnt signal pathway. Recent studies have shown structural alterations in the APC gene and axin in patients with colorectal carcinoma, along with β-catenin. We aimed to compare β-catenin expression, which is a prognostic factor itself, with other prognostic parameters. MATERIAL AND METHOD A total of 70 patients who had surgical intervention for colorectal malignancies between January 1994 and December 2003 were included in the study. Fift y-nine of the patients (84.3%) were male, 11 of the patients (15.7%) were female; their ages varied between 24 and 82 (mean 60.3 ±15.2) years. Paraff in blocks were immunohistochemically stained for β-catenin. The number of stained cell nuclei was assessed according to the stage of disease using the TNM classification, histological grade, lymphatic invasion, vascular invasion and tumor's local invasion. RESULTS When groups constituted according to tumor histologic grade were compared for prognostic parameters in terms of stain density for β-catenin and number of stained cell nuclei, stain density was mild (+) and the number of stained nuclei was smaller in well-differentiated groups while stain density was strong (+++) and the number of stained nuclei was higher in poorly differentiated groups. There was a relation between β-catenin expression and differentiation grade, lymph node metastasis, stage and tumor size but not with vascular invasion. CONCLUSION These data indicate that β- catenin, with functions in cell homeostasis and relations with the APC gene, has a substantial role in colorectal carcinogenesis.
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Affiliation(s)
- Kemal Peker
- Department of General Surgery, Erzincan University, Faculty of Medicine, Erzincan, Turkey.
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Demiralay R, Gürsan N, Erdem H. The effects of erdosteine and N-acetylcysteine on apoptotic and antiapoptotic markers in pulmonary epithelial cells in sepsis. Eurasian J Med 2013; 45:167-75. [PMID: 25610275 PMCID: PMC4261429 DOI: 10.5152/eajm.2013.35] [Citation(s) in RCA: 7] [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] [Received: 05/06/2013] [Accepted: 05/21/2013] [Indexed: 01/30/2023] Open
Abstract
OBJECTIVE This study investigated the frequency of apoptosis in rat pulmonary epithelial cells after the injection of an intraperitoneal endotoxin lipopolysaccharide (LPS), the effects of LPS on apoptotic (bax, caspase-3) and antiapoptotic (bcl-2) markers during lung damage, and the protective effects of two known antioxidant agents, erdosteine and N-acetylcysteine (NAC). MATERIALS AND METHODS Male Wistar rats were divided into the following six groups, which included nine rats each: two control groups, two LPS-treated groups, one erdosteine-treated group (150 mg/kg), and one NAC-treated group (150 mg/kg). LPS was injected intraperitoneally at a dosage of 20 mg/kg. Following LPS injection, the antioxidants were orally administered. The rats were sacrificed at 24 h after LPS administration. The levels of apoptosis in bronchiolar and alveolar cells were determined using the TUNEL-staining method. Immunohistochemical staining of cytoplasmic bax, caspase-3, and bcl-2 in the epithelial cells was performed. RESULTS Erdosteine and NAC significantly reduced the rate of LPS-induced pulmonary epithelial cell apoptosis. The effect of NAC on regulating apoptosis was weaker than that of erdosteine. Erdosteine and NAC significantly reduced the local induction of bax and caspase 3 and significantly increased the reduced local production of bcl-2. CONCLUSION These findings suggest that erdosteine and NΑC can effectively protect the lungs from the damaging effects of LPS.
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Affiliation(s)
- Rezan Demiralay
- Department of Pulmonary Medicine, Faculty of Medicine, Süleyman Demirel University, Isparta, Turkey
| | - Nesrin Gürsan
- Department of Pathology, Faculty of Medicine, Atatürk University, Erzurum, Turkey
| | - Havva Erdem
- Department of Pathology, Faculty of Medicine, Atatürk University, Erzurum, Turkey
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Kaya M, Şimşek-Kaya G, Gürsan N, Kireççi E, Dayı E, Gündoğdu B. Local treatment of chronic osteomyelitis with surgical debridement and tigecycline-impregnated calcium hydroxyapatite: an experimental study. Oral Surg Oral Med Oral Pathol Oral Radiol 2012; 113:340-7. [DOI: 10.1016/j.tripleo.2011.03.032] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2011] [Revised: 03/16/2011] [Accepted: 03/17/2011] [Indexed: 10/18/2022]
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Kaya GŞ, Kaya M, Gürsan N, Kireççi E, Güngörmüş M, Balta H. Response to Dr. Lubart. Photomed Laser Surg 2011. [DOI: 10.1089/pho.2011.9897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Göksel Şimşek Kaya
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Atatürk University, Erzurum, Turkey
| | - Mahir Kaya
- Department of Surgery, Faculty of Veterinary Medicine, Atatürk University, Erzurum, Turkey
| | - Nesrin Gürsan
- Department of Pathology, Faculty of Medicine, Atatürk University, Erzurum, Turkey
| | - Ekrem Kireççi
- School of Health, Kahramanmaraş Sütçüimam University, Kahramanmaraş, Turkey
| | - Metin Güngörmüş
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Atatürk University, Erzurum, Turkey
| | - Hilal Balta
- Department of Pathology, Faculty of Medicine, Atatürk University, Erzurum, Turkey
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Kaya GŞ, Kaya M, Gürsan N, Kireççi E, Güngörmüş M, Balta H. The use of 808-nm light therapy to treat experimental chronic osteomyelitis induced in rats by methicillin-resistant Staphylococcus aureus. Photomed Laser Surg 2011; 29:405-12. [PMID: 21219239 DOI: 10.1089/pho.2010.2807] [Citation(s) in RCA: 10] [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: 10/18/2022] Open
Abstract
BACKGROUND DATA In vivo and in vitro studies have reported that laser energy in differing wavelengths and irradiation regimes has a potential bactericidal effect on Staphylococcus aureus. OBJECTIVE The purpose of this study was to investigate whether a light wavelength of 808 nm in varying doses has an effect on chronic osteomyelitis induced experimentally in the rat tibia. METHODS Intramedullary cavities were surgically created in the left tibias of 39 adult Wistar albino rats. Five randomly selected subjects were injected with a sterile saline solution, and methicillin-resistant S. aureus (MRSA) was used to induce osteomyelitis in the remaining rats. After 3 weeks, rats with evidence of osteomyelitis were treated with debridement alone (n = 7), with debridement plus laser irradiation to induce photoeradication (n = 21), or were not treated at all [negative control, (n = 6)]. Active irradiation was performed using an 808 nm, 100 mW continuous-wave diode laser with a beam spot size of 0.7854 cm(2) (irradiance = 127.3 mW/cm(2)). Laser treatment commenced immediately after debridement surgery and was applied daily for 5 consecutive days. Irradiation lasted 60 secs (6 J at 7.64 J/cm(2): n = 7), 120 secs (12 J at 15.29 J/cm(2): n = 7), or 180 secs (18 J at 22.93 J/cm(2): n = 7). Rats in the sham and negative control groups were killed 21 days post-induction surgery, and those in the treatment groups were killed after 42 days. Following killing, tibias were removed and analyzed histopathologically, radiographically, and microbiologically. RESULTS Histopathological analysis showed that infection levels had decreased by 37%, 67%, 81%, and 93% in the groups treated by debridement or by debridement plus 7.64, 15.29, and 22.93 J/cm(2) light therapy, respectively, compared to the negative control group. Osteomyelitis-induced rats had the highest bacteria count (5 × 10(5)). Bacterial counts fell to 1.6 × 10(4), 4.3 × 10(2), 5.5 × 10(1), and 3.3 × 10(0) in groups treated by debridement or by debridement plus 7.64, 15.29, and 22.93 J/cm(2) light therapy, respectively, compared to the negative control group. CONCLUSIONS Within the limitations of this study, laser phototherapy with the appropriate irradiation parameters appears to be a promising adjunct and/or alternative technique to pharmacological agents in the treatment of osteomyelitis. The 808 nm 100 mW (127.3 mW/cm(2)) laser device used in this study achieved a maximum effect with an irradiation time of 180 secs, delivering 18 J at an energy density of 22.93 J/cm(2).
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Affiliation(s)
- Göksel Şimşek Kaya
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Atatürk University, Erzurum, Turkey.
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Oztürk G, Aydınlı B, Celebi F, Gürsan N. Gastric perforation caused by Strongyloides stercoralis: a case report. ULUS TRAVMA ACIL CER 2011; 17:90-92. [PMID: 21341143] [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: 05/30/2023]
Abstract
Strongyloidiasis is a parasitosis caused by the female nematode of the Strongyloides stercoralis. S. stercoralis causes a chronic infection that is asymptomatic in 50% of chronically infected patients, and it can also affect the stomach. Gastric involvement causes symptoms mostly mimicking gastritis. We report herein a case of gastric perforation in a 37-year-old woman, which was thought to be caused by S. stercoralis.
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Affiliation(s)
- Gürkan Oztürk
- Department of General Surgery, Atatürk University Faculty of Medicine, Erzurum, Turkey.
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Gümüş M, Celebi F, Böyük A, Gürsan N, Akçay F. Dehydroepiandrosterone ameliorates hepatocellular damage in obstructive jaundice. Cell Biochem Funct 2010; 28:515-20. [PMID: 20803708 DOI: 10.1002/cbf.1686] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We aimed to investigate the ameliorating effect of dehydroepiandrosterone (DHEA) on the potential hepatocellular damage in experimental obstructive jaundice. Twenty-four male rabbits in the study were randomly allocated into three groups. In the sham group, the choledochal canal was identified and explored. In the obstructive jaundice and treatment groups, the choledochal canal was ligated. Placebo and DHEA were administered to the obstructive jaundice and treatment groups, respectively. Blood samples were obtained at baseline, and both blood samples and liver tissue samples were obtained by re-laparotomy performed on day 8. Biochemical parameters were measured in blood samples, and liver samples were histopathologically evaluated. Alanine aminotransferase (ALT), aspartate aminotransferase (AST), gamma glutamyl transferase (GGT), alkaline phosphatase (ALP) and bilirubin levels were lower in the treatment group than in obstructive jaundice. Mononuclear inflammation in the portal region and hepatocyte degeneration were milder in the treatment group compared to obstructive jaundice group. Fibrosis and necrosis were also recovered by the DHEA treatment.In conclusion, these findings suggested that DHEA may reduce the obstructive jaundice-induced hepatocellular damage.
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Affiliation(s)
- Metehan Gümüş
- Department of General Surgery, Medical Faculty, Dicle University, Diyarbakir, Turkey.
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Selimoğlu MA, Ertekin V, Karabiber H, Turgut A, Gürsan N. Treatment results of chronic hepatitis B in children: a retrospective study. Turk J Pediatr 2010; 52:360-366. [PMID: 21043380] [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: 05/30/2023]
Abstract
In this retrospective study, we aimed to share our experience with different treatment modalities for chronic hepatitis B in a series of children. The study included 126 children (mean: 9.5 +/- 3.8 years). Normalization of alanine aminotransferase (ALT), loss of hepatitis B virus (HBV)-DNA and hepatitis B e antigen (HBeAg), and development of antibody to HBeAg (anti-HBe) altogether at the end of the treatment was considered as end of therapy response (ETR). Seroconversion ongoing one year after the cessation of therapy was considered as sustained response. Of the total children, 90 (71.4%) were treated, whereas the remaining were just followed-up. High-dose interferon (IFN)-alpha (10 MU/m2) alone, standard-dose IFN-alpha (6 MU/m2) plus lamivudine (4 mg/kg/d), high-dose IFN-alpha plus lamivudine, or lamivudine alone was used, IFN-alpha thrice weekly for six months, and lamivudine daily for one year. Of children who had completed their treatment, 34 (37.8%) achieved ETR. Sustained response rate was 36.7%. Response rates were different in the different treatment groups (p: 0.01). The highest response rate was observed in those who received standard-dose IFN-alpha plus lamivudine treatment (61.5%). Of children without treatment, one (2.8%) had anti-HBe seroconversion. Standard-dose IFN-alpha plus lamivudine treatment was found superior to the other treatment modalities. Predictors of ETR were similar to those found in previous studies.
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Affiliation(s)
- Mukadder Ayşe Selimoğlu
- Division of Pediatric Gastroenterology, Hepatology, and Nutrition, Inönü University Faculty of Medicine, Malatya, Turkey
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Abstract
Keratocystic odontogenic tumor (KCOT) is a benign intraosseous neoplasm of the jaw. Involvement of the maxillary sinus is an unusual presentation. We present the case of a 23-year-old man with extensive KCOT and impacted third molar in the right maxillary sinus. The clinical, radiological, and histological features of this tumor and its surgical management are discussed.
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Affiliation(s)
- Binali Cakur
- Department of Oral Diagnosis and Radiology, Faculty of Dentistry, Atatürk University, Erzurum, Turkey.
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Abstract
Scleroderma is a generalized autoimmune disease with variable involvement of the skin and major organs (esophagus, lung, heart and kidney). Scleroderma is essentially a skin disease that frequently involves the digestive system. In scleroderma, the esophagus is the most frequently affected organ of the digestive system, and esophageal dysmotility, reflux and stricture may be observed in the advanced stage. Balloon dilatation and bougienage are generally sufficient in patients developing stricture, and the number of cases in whom resection is performed is very low. In a 20-year-old patient with difficulty in taking even liquid foods, tests revealed sclerodermal involvement of the distal end of the esophagus and stricture. Esophageal resection and gastric replacement were performed. Such systemic diseases as scleroderma, although rare, must be considered in the differential diagnosis of nonmalignant dysphagia, and resection must be borne in mind as a surgical option in cases of advanced stricture.
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Affiliation(s)
- Erdal Yekeler
- Department of Thoracic Surgery, Region Training and Research Hospital, Atatürk University, School of Medicine, Erzurum, Turkey
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Demiralay R, Gürsan N, Erdem H. The effects of erdosteine, N-acetylcysteine, and vitamin E on nicotine-induced apoptosis of hippocampal neural cells. J Cell Biochem 2008; 104:1740-6. [DOI: 10.1002/jcb.21739] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [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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Demiralay R, Gürsan N, Erdem H. Regulation of nicotine-induced apoptosis of pulmonary artery endothelial cells by treatment of N-acetylcysteine and vitamin E. Hum Exp Toxicol 2007; 26:595-602. [PMID: 17884964 DOI: 10.1177/0960327106070079551] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
This study investigated the frequency of apoptosis in rat pulmonary artery endothelial cells after intraperitoneal nicotine injection, examining the roles of the inflammatory markers myeloperoxidase (MPO), tumour necrosis factor alpha (TNF-alpha), and vascular endothelial growth factor (VEGF) in nicotine-induced vascular damage and the protective effects of two known antioxidant agents, N-acetylcysteine (NAC) and vitamin E. Female Wistar rats were divided into four groups, each composed of nine rats: negative control group, positive control group, NAC-treated group (500 mg/kg), and vitamin E-treated group (500 mg/kg). Nicotine was intraperitoneally injected at a dosage of 0.6 mg/kg for 21 days. Following nicotine injection, the antioxidants were administered orally; treatment was continued until the rats were killed. Lung tissue samples were stained with hematoxylin-eosin (H&E) for histopathological assessments. Apoptosis level in endothelial cells was determined by using TUNEL (terminal deoxynucleotidyl transferase-mediated dUTP nick end-labelling) method. Staining of cytoplasmic TNF-alpha and VEGF in endothelial cells, and perivascular MPO activity were evaluated by immunohistochemistry. The treatments with NAC and vitamin E significantly reduced the rate of nicotine-induced endothelial cell apoptosis. NAC and vitamin E significantly reduced the increases in the local production of TNF-alpha and VEGF, and perivascular MPO activity. This findings suggest that NAC can be as effective as vitamin E in protecting against nicotine-induced endothelial cell apoptosis.
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Affiliation(s)
- R Demiralay
- Süleyman Demirel University, School of Medicine, Department of Pulmonary Medicine, Isparta, Turkey.
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Abstract
This study was conducted to investigate the frequency of apoptosis in rat cardiomyocytes after intratraperitoneal nicotine injection, in order to examine the roles of inflammatory markers [myeloperoxidase (MPO) and tumor necrosis factor alpha (TNF-alpha)] in nicotine-induced cardiac damage and to determine the protective effects of three known antioxidant agents (N-acetylcysteine (NAC), erdosteine and vitamin E) on nicotine toxicity in the heart. Female Wistar rats were divided into seven groups, each composed of nine rats: two negative control groups, two positive control groups, one erdosteine-treated group (500 mg kg(-1)), one NAC-treated group (500 mg kg(-1)) and one vitamin E-treated group (500 mg kg(-1)). Nicotine was intraperitoneally injected at a dosage of 0.6 mg kg(-1) for 21 days. Following nicotine injection, the antioxidants were administered orally; treatment was continued until the rats were killed. Heart tissue samples were stained with hematoxylin-eosin for histopathological assessments. Apoptosis level in cardiomyocytes was determined by using TUNEL (terminal deoxynucleotidyl transferase-mediated dUTP nick endlabelling) method. Staining of cytoplasmic TNF-alpha in cardiomyocytes and heart MPO activity were evaluated by immunohistochemistry. The treatments with erdosteine, NAC and vitamin E significantly reduced the rate of nicotine-induced cardiomyocyte apoptosis. The effect of vitamin E on apoptosis regulation was weaker than the effects of erdosteine and NAC. Erdosteine, NAC and vitamin E significantly reduced the increases in the local production of TNF-alpha and heart MPO activity. This findings suggest that the effects of erdosteine and NAC on apoptosis regulation are stronger than that of vitamin E.
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Affiliation(s)
- Rezan Demiralay
- Süleyman Demirel University, School of Medicine, Department of Pulmonary Medicine, Isparta, Turkey.
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Aydinli B, Yildirgan MI, Oztürk G, Atamanalap SS, Polat KY, Başoğlu M, Gündoğdu C, Süleyman H, Kiziltunç A, Gürsan N, Oren D. The role of sildenafil citrate in the protection of gastric mucosa from nonsteroidal anti-inflammatory drug-induced damage. ULUS TRAVMA ACIL CER 2007; 13:268-273. [PMID: 17978907] [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: 05/25/2023]
Abstract
BACKGROUND To investigate the protective effects of sildenafil citrate (SC) on indomethacin-induced gastric ulcer in a rat model. METHODS Gastric ulcers were induced by oral ingestion of indomethacin. Thirty rats were used in the study. The rats were divided into 3 groups, and given either SC (n=10) at a dose of 50 mg/kg or omeprazole (n=10), or no treatment (n=10, the control group). In addition to the measurements of ulceration areas, the sum of gastric tissue nitrite (NO2-) and nitrate (NO3-) were evaluated as an indicator of gastric tissue NO level. All the measurements were done at 6th hour of oral administration of indomethacin. RESULTS The mean values of ulceration areas were 4.0+/-2.31, 3.0+/-2.00, and 21.4+/-8.43 in the SC, omeprazole and control groups, respectively. The mean values of ulceration areas in the SC-treated group was lower than that of the control group. The contents of NO were 32.2+/-3.05, 24.8+/-3.23 and 21.0+/-0.82 (micromol/g protein) in gastric tissue in indomethacin, SC, omeprazole and control groups, respectively, The content of NO in the SC-treated groups was significantly higher than control group (p<0.001). CONCLUSION Sildenafil citrate may have a role in protecting gastric mucosa from the damage caused by indomethacin. This effect may be associated with the increased level of NO in gastric tissue.
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Affiliation(s)
- Bülent Aydinli
- Department of General Surgery, Medicine Faculty of Atatürk University, Erzurum, Turkey.
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Demiralay R, Gürsan N, Ozbilim G, Erdogan G, Demirci E. Comparison of the effects of erdosteine and N-acetylcysteine on apoptosis regulation in endotoxin-induced acute lung injury. J Appl Toxicol 2007; 26:301-8. [PMID: 16489578 DOI: 10.1002/jat.1133] [Citation(s) in RCA: 16] [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] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
This study was carried out to investigate comparatively the frequency of apoptosis in lung epithelial cells after intratracheal instillation of endotoxin [lipopolysaccharide (LPS)] in rats and the role of tumor necrosis factor alpha (TNF-alpha) on apoptosis, and the effects of erdosteine and N-acetylcysteine on the regulation of apoptosis. Female Wistar rats were given oral erdosteine (10-500 mg kg(-1)) or N-acetylcysteine (10-500 mg kg(-1)) once a day for 3 consecutive days. Then the rats were intratracheally instilled with LPS (5 mg kg(-1)) to induce acute lung injury. The rats were killed at 24 h after LPS administration. Lung tissue samples were stained with hematoxylin-eosin for histopathological assessments. The apoptosis level in the lung bronchial and bronchiolar epithelium was determined using the TUNEL (terminal deoxynucleotidyl transferase-mediated dUTP nick endlabelling) method. Cytoplasmic TNF-alpha was evaluated by immunohistochemistry. Pretreatment with erdosteine and pretreatment with N-acetylcysteine at a dose of 10 mg kg(-1) had no protective effect on LPS-induced lung injury. When the doses of drugs increased, the severity of the lung damage caused by LPS decreased. It was found that as the pretreatment dose of erdosteine was increased, the rate of apoptosis induced by LPS in lung epithelial cells decreased and this decrease was statistically significant in doses of 300 mg kg(-1) and 500 mg kg(-1). Pretreatment with N-acetylcysteine up to a dose of 500 mg kg(-1) did not show any significant effect on apoptosis regulation. It was noticed that both antioxidants had no significant effect on the local production level of TNF-alpha. These findings suggest that erdosteine could be a possible therapeutic agent for acute lethal lung injury and its mortality.
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Affiliation(s)
- Rezan Demiralay
- Süleyman Demirel University, School of Medicine, Department of Pulmonary Medicine, Isparta, Turkey.
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Yildirgan MI, Başoglu M, Atamanalp SS, Albayrak Y, Gürsan N, Onbaş O. Duodenal Stromal Tumor: Report of a Case. Surg Today 2007; 37:426-9. [PMID: 17468827 DOI: 10.1007/s00595-004-3400-6] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2004] [Accepted: 04/21/2004] [Indexed: 01/19/2023]
Abstract
Gastrointestinal stromal tumors are rare tumors of the gastrointestinal (GI) tract that arise from primitive mesenchymal cells. Gastrointestinal stromal tumors account for approximately 80% all of gastrointestinal mesenchymal tumors. Duodenal stromal tumors (DSTs) manifest with unexplained melena, pain, bleeding, anemia, sometimes a partial duodenal obstruction and, rarely, with obstructive jaundice. If the tumor is successfully treated, its prognosis is usually good because of its non-aggressive nature. If resected, the prognosis is favorable in a majority of cases, and it is much better than in carcinomas of the duodenum. In this article, we report a case of DST originating from the first and second portion of the duodenum. Our patient did not have any problems postoperatively and remained symptom-free at 18 months after surgery.
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Affiliation(s)
- M Ilhan Yildirgan
- Department of General Surgery, Faculty of Medicine, Ataturk University, 25240 Erzurum, Turkey
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Yilmaz O, Dursun H, Gürsan N, Pirim I, Yilmaz A, Okcu N. Effects of the myeloperoxidase 463 gene polymorphisms on development of atrophy in H pylori infected or noninfected gastroduodenal disease. World J Gastroenterol 2007; 13:1243-6. [PMID: 17451207 PMCID: PMC4147001 DOI: 10.3748/wjg.v13.i8.1243] [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] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the relationship between myelo-peroxidase polymorphisms as a host-related factor and atrophy caused by H pylori.
METHODS: Our study enrolled 77 patients. Biopsy materials obtained during gastrointestinal endoscopies were evaluated for the presence of H pylori. Polymerase chain reaction-restriction fragment length polymorphism assay was used to characterize myeloperoxidase genotypes.
RESULTS: Forty four patients (57.1%) were Hp (+) and 33 (42.9%) were Hp (-). Sixty six (85.7%) had GG genotype, 10 (12.9%) had GA genotype and 1 (1.29%) had AA genotype. The change in atrophy in relation to neutrophil infiltration was significant in Hp (+) patients (P = 0.0001). The change in atrophy in relation to neutrophil infiltration in patients with GG genotype was significant (P = 0.002). However, the change in atrophy in relation to neutrophil infiltration was not significiant in patients with Hp (+) GG genotype (r = 0.066, P = 0.63).
CONCLUSION: Myeloperoxidase genotype is critical for development of atrophy in relation to the severity of inflammation. However, it is interesting to note that, H pylori does not show any additive effect on development of atrophy.
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Affiliation(s)
- Omer Yilmaz
- Department of Gastroenterology, University of Atatürk, Erzurum 25070, Turkey.
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22
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Altaş E, Gürsan N, Uçüncü H. Transoral approach to a huge neurofibroma of the parapharyngeal space: a case report. Kulak Burun Bogaz Ihtis Derg 2007; 17:58-62. [PMID: 17483615] [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: 05/15/2023]
Abstract
Neurofibroma of the parapharyngeal space accounts for less than 2% of all parapharyngeal space neoplasms. A 38-year-old man presented with complaints of snoring and left-sided nasal obstruction. Medical history also revealed numerous huge skin neurofibromas and multiple café au lait spots all over the body. Pharyngeal endoscopic examination disclosed a firm, nonpulsatile submucosal mass, pushing the left pharyngeal region approximately 5 cm medially, and extending to the inferior part of the epiglottis. The tumor was removed by transoral excision without any subsequent complications. Histological and immunohistochemical examinations revealed a neurofibroma.
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Affiliation(s)
- Enver Altaş
- Department of Otolaryngology, Medicine Faculty of Atatürk University, Erzurum, Turkey.
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Şahin Ö, Doğru Ö, Gürsan N, İkbal M, Albayrak A, Gündoğdu C. TURNER SYNDROME AND CYSTIC HYGROMA. ELECTRON J GEN MED 2006. [DOI: 10.29333/ejgm/82394] [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: 11/21/2022]
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24
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Demiralay R, Gürsan N, Erdem H. The effects of erdosteine, N-acetylcysteine, and vitamin E on nicotine-induced apoptosis of pulmonary cells. Toxicology 2006; 219:197-207. [PMID: 16377052 DOI: 10.1016/j.tox.2005.11.020] [Citation(s) in RCA: 18] [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] [Subscribe] [Scholar Register] [Received: 10/13/2005] [Revised: 11/15/2005] [Accepted: 11/15/2005] [Indexed: 10/25/2022]
Abstract
This study was conducted to investigate the frequency of apoptosis in the pulmonary epithelial cells of rats after intratraperitoneal nicotine injection, in order to examine the role of inflammatory markers [myeloperoxidase (MPO) and tumor necrosis factor-alpha (TNF-alpha)] in nicotine-induced lung damage, and to determine the protective effects of three known antioxidant agents [N-acetylcysteine (NAC), erdosteine, and vitamin E] on the lung toxicity of nicotine in the lungs. Female Wistar rats were divided into seven groups, each composed of nine rats: two negative control groups, two positive control groups, one erdosteine-treated group (500 mg/kg), one NAC-treated group (500 mg/kg), and one vitamin E-treated group (500 mg/kg). Nicotine was injected intraperitoneally at a dosage of 0.6 mg/kg for 21 days. Following nicotine injection, the antioxidants were administered orally, treatment was continued until the rats were killed. Lung tissue samples were stained with hematoxylin-eosin (H&E) for histopathological assessments. The apoptosis level in the lung bronchiolar and alveolar epithelium was determined by using the terminal deoxynucleotidyl transferase-mediated dUTP nick end labelling (TUNEL) method. Cytoplasmic TNF-alpha in the bronchiolar and alveolar epithelial cells and the lung MPO activity were evaluated immunohistochemically. The protective effect of vitamin E on lung histology was stronger than that of erdosteine or NAC. Treatment with erdosteine, NAC, and vitamin E significantly reduced the rate of nicotine-induced pulmonary epithelial cell apoptosis, and there were no significant differences in apoptosis among the three antioxidants groups. Erdosteine, NAC, and vitamin E significantly reduced the increases in TNF-alpha staining and lung MPO activity. The effects of erdosteine on the increases in the local TNF-alpha level and lung MPO activity were weaker than that of NAC or vitamin E. This findings suggest that erdosteine and NAC can be as effective as vitamin E in protecting against nicotine-induced pulmonary cell apoptosis.
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Affiliation(s)
- Rezan Demiralay
- Department of Pulmonary Medicine, School of Medicine, Süleyman Demirel University, Isparta, Turkey.
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25
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Ertekin V, Selimoğlu MA, Gürsan N, Oztürk CF. Image and diagnosis. Intracranial haemorrhage due to vitamin K deficiency, as the first symptom of extrahepatic biliary atresia. W INDIAN MED J 2005; 54:392, 397. [PMID: 16642658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Affiliation(s)
- V Ertekin
- Faculty of Medicine, Department of Pediatric Gastroenterology, Ataturk University, Erzurum, Turkey.
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26
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28
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Ozbakiş Dengiz G, Gürsan N. Effects of Momordica charantia L. (Cucurbitaceae) on indomethacin-induced ulcer model in rats. Turk J Gastroenterol 2005; 16:85-8. [PMID: 16252198] [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: 05/05/2023]
Abstract
BACKGROUND/AIMS Fruits of Momordica charantia L.-cucurbitaceae have been frequently used in folk medicine for rapid healing of cutaneous lesions and peptic ulcer, especially in Western Anatolia in Turkey. METHODS The anti-ulcerogenic effect of the oily extract of Momordica charantia fruits was investigated in male Sprague-Dawley rats. Animals were separated into six groups. Distilled water (control group), famotidine (40 mg/kg), oily extracts (5 and 10 ml/kg), and vehicles (olive oil -5 and 10 ml/kg) were given orally (gavage). Thirty minutes later indomethacin (25 mg/kg) was administrated to all the groups. Six hours later, animals were killed with decapitation. For each stomach, ulcerated and total areas were measured (mm2). The ulcer indexes for each stomach and the ulcer inhibition rates for each group were calculated, after which the stomachs were evaluated pathologically (polymorphonuclear leukocytes infiltration). RESULTS Ulcer inhibition rates were as follows: famotidine -91.54%, oily extract (5 ml/kg) -53.80%, oily extract (10 ml/kg) -98.04%, vehicle (olive oil -5 ml/kg) -18.40%, and vehicle (olive oil -10 ml/kg) -88.02%. According to polymorphonuclear leukocytes infiltration, oily extract (10 ml/kg) and vehicle (10 ml/kg) had similar effects to famotidine. CONCLUSIONS The olive oil extract of M. charantia fruit did show a protective effect macroscopically.
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29
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Tekin SB, Erdem F, Gürsan N. Iatrogenic Kaposi 's Sarcoma. Turk J Haematol 2003; 20:47-49. [PMID: 27265336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023] Open
Abstract
The development of Kaposi's sarcoma (KS) has been associated with either iatrogenic or underlying disease related immunodeficiency. We report a case with iatrogenic Kaposi's sarcoma developed after treatment of non- Hodgkin's lymphoma (NHL) who was achieved partial clinical remission with systemic chemotherapy.
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30
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Abstract
Primary esophageal tuberculosis is extremely rare. It is almost always secondary to tuberculosis of other organs. Abscess formation of the tuberculosis in the esophageal wall has not been reported in the literature previously. In this report, we present a case of esophageal tuberculosis abscess, with presented dysphagia, diagnosed by histologic evaluation of surgery specimen, without any other organ involvement. The unusual cause and the interesting clinical course of dysphagia are described.
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Affiliation(s)
- A Eroğlu
- Department of Thoracic Surgery, Atatürk University Medical Faculty, Erzurum, Turkey.
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31
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Abstract
Primary muscle hydatidosis is very rare. Rupture and spreading of the cyst contents by improper handling may later cause secondary cyst or allergic reactions. Preoperative recognition of a hydatid cyst is therefore critical. It often presents as a soft-tissue mass, however, and pre-operative recognition of this rare entity is clearly difficult. Here, a case of primary hydatidosis affecting the gracilis muscle is presented, and the magnetic resonance imaging, clinical and pathological findings are described.
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Affiliation(s)
- D Keskin
- Department of Orthopaedics and Traumatology, Atatürk University, Faculty of Medicine, Erzurum, Turkey.
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32
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Abstract
Primary mediastinal leiomyosarcoma are extremely rare tumors, which develop from smooth muscle, usually in the esophagus or main vessels. Very few cases have been reported in the literature and only two of these developed from small vessels in the soft tissue of the anterior mediastinum. We report on a 45-year-old man who presented with a huge anterior mediastinal tumor. The tumor was surgically removed with right thoracotomy and the diagnosis of well-differentiated leiomyosarcoma was established. It probably originated from the anterior mediastinal tissue, so at operation a continuity was not found between the tumor and neighboring structures. This rare and interesting histopathology is discussed and the literature is reviewed.
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Affiliation(s)
- Atilla Eroğlu
- Department Of Thoracic Surgery, Medical Faculty, Atatürk University, 25240 Erzurum, Turkey.
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Abstract
Here we describe the clinical, radiologic, histopathological and immunohistochemical features of a rare spontaneous rupture of renal angiosarcoma detected in the left kidney of a 55-year-old male. Due to the rarity of this neoplasm (less than 15 cases have been reported), there is no unanimous consensus for therapy following radical nephrectomy. In our case there was no flank trauma and retroperitoneal haematoma around the left kidney was seen on computed tomography. The patient underwent left radical nephrectomy and died about 3 months after operation due to multiple bone and liver metastases. To our knowledge, this is the first report of spontaneous rupture of renal angiosarcoma and we suggest that it should be borne in mind that renal angiosarcoma may be a cause of retroperitoneal haematomas.
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Affiliation(s)
- Yilmaz Aksoy
- Department of Urology, Faculty of Medicine, Atatürk University, Erzurum, Turkey.
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34
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Abstract
The aim of this paper was to investigate the protective effect of the T-type calcium channel blocker in a model of acute local inflammation (histamine-induced). The intraplantar injection of histamine elicited an inflammatory response that was characterized by a time-dependent increase in paw oedema and neutrophil infiltration in paw tissue. The maximal increase in paw volume was observed at 90 min after histamine administration (maximal paw volume: 0.97 +/- 0.07). In addition, polymorphonuclear leucocyte (PNL) number was markedly increased in the histamine-treated paw tissue (144 +/- 25.56). However, histamine-induced paw oedema was significantly reduced in a dose-dependent manner by treatment with mibefradil (given at 10, 25, 50, and 100 mg x kg(-1)) at 30, 60, 90, 120, 150, 180 min after injection of histamine. Mibefradil treatment also caused a significant reduction of the polymorphonuclear leucocyte number in the paw tissue. Our findings support the view that mibefradil exerts antiinflammatory effects.
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Affiliation(s)
- D Bilici
- Department of Pharmacology, Medical School, Atatürk University, Turkey.
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