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Dive into the research topics where Levend Ozkan is active.

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Featured researches published by Levend Ozkan.


Korean Journal of Urology | 2010

The effect of asymptomatic urethral caruncle on micturition in women with urinary incontinence.

Cuneyd Ozkurkcugil; Levend Ozkan; Tufan Tarcan

Purpose The aim of this study was to evaluate the effect of asymptomatic urethral caruncle (UC) on micturition in women suffering from urinary incontinence. Materials and Methods A total of 232 patients participated in the study. UC was diagnosed in 50 of 232 patients with urinary incontinence during a physical examination in our clinic. All cases were divided into 2 groups: UC combined with urinary incontinence (group 1) and urinary incontinence only (group 2). Urodynamic evaluations were performed according to the International Continence Society standards. Results Both groups were similar in terms of voiding diary, pad test and residual urine volume. Urodynamic studies revealed no significant difference between group 1 and 2 (infravesical obstruction: 6% vs. 4.4%; overactive detrusor: 44% vs. 42.9% respectively). The rates of severe IPSS (37.8% vs. 20.9%) and severe cystocele (20.9% vs. 13.8%) were numerically higher in group 1 with no statistically significant difference. Conclusions Our results suggest that there is no effect of asymptomatic UC on lower urinary tract symptoms in women with urinary incontinence. Therefore, treating asymptomatic UC is unnecessary in these patients. However, during incontinence surgery, it is the surgeons decision whether to treat asymptomatic UC.


Toxicology and Industrial Health | 2011

PROTECTIVE EFFECTS OF PENTOXIFYLLINE ON CIGARETTE SMOKING-INDUCED RENAL TISSUE DAMAGE IN RATS

Cuneyd Ozkurkcugil; Melda Yardimoglu Yilmaz; Levend Ozkan; Sibel Kokturk; Tonguc Isken

In this study, we investigated the protective effect of pentoxifilline (PTX) on smoking-induced damage in rat kidney tissues. Twenty-seven male Wistar rats were used in the study. Animals were divided into three equal groups as follows: Group 1: control group with only normal saline (NS; 0.9% NaCl) injection for 8 weeks; Group 2: cigarette smoking and NS injection for 8 weeks; and Group 3: cigarette smoking and PTX injection for 8 weeks. The rats were sacrificed after 8 weeks and their kidneys were excised for histopathological analysis. Serial paraffin sections (5 µm) of the kidneys were cut and stained with hematoxylin and eosin (H&E) and periodic acid-Schiff (PAS). The terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate-biotin nick end labeling (TUNEL) method was used to assess apoptosis. Glomerular diameters, glomerular cell number and proximal tubule cell numbers were compared between the groups. Our results showed that PTX treatment prevented negative effects of smoking in rat kidneys. There was a statistically significant difference in all assessed parameters between Group 2 and other groups (p < 0.05). In conclusion, our study shows that PTX treatment is effective in preventing the negative effects of cigarette smoking on kidneys by inhibiting cell damage with its antioxidant properties.


Experimental Animals | 2017

Preventive effect of intravesical ozone supplementation on n-methyl-n-nitrosourea-induced non-muscle invasive bladder cancer in male rats

Kerem Teke; Tayyar Alp Ozkan; Oğuz Özden Cebeci; Hasan Yilmaz; Muhammed E Keles; Levend Ozkan; Meltem Ozlen Dillioglugil; Demir Kursat Yildiz; Ozdal Dillioglugil

Although non-muscle invasive bladder cancer (NMIBC) is widely seen in men, most laboratory studies of new intravesical therapies to prevent NMIBC have been conducted on female animals. In addition, ozone (O3) has been shown to be a beneficial agent as an intravesical application in the treatment of various disorders. In the current study, we evaluated the immunohistopathological and oxidative-antioxidative effects of intravesical O3 treatment on n-methyl-n-nitrosourea (MNU)-induced NMIBC. Male Wistar-Albino rats (n=51) were divided into four groups: sham (n=6), O3 only (n=15), MNU only (n=15), and MNU+O3 (n=15). The MNU-only and MNU+O3 groups received MNU, and the O3-only group received saline every other week for 10 weeks. The MNU-only group received 1 ml saline in place of O3 treatment, whereas the O3-only and MNU+O3 groups were treated with 1 ml 25 µg/ml O3 between the 7th and 12th weeks. Rat bladders were collected in the 15th week for immunohistopathology and oxidant-antioxidant quantitation. Oxidant-antioxidant parameters were determined by ELISA. Although all surviving rats in the MNU-only group had preneoplastic (4/11, 36.4%) or neoplastic changes (7/11, 63.6%), a completely normal urothelium was observed in 2 rats (2/12, 16.7%) in the MNU+O3-group (P=0.478). More high-grade lesions were observed in the MNU-only group (4/11, 36.4%) than in the MNU+O3 group (1/12, 8.3%) (P=0.120). All oxidant-antioxidant parameters significantly increased (P<0.05) in the O3-only group compared with the sham group. However, only antioxidant superoxide dismutase was remarkably higher (178.9%, P=0.060) in the MNU+O3 group compared with the MNU-only group. This is the first methodologically and pathologically well-described male rat orthotopic bladder carcinogenesis model with intravesical MNU and administration of O3 in NMIBC.


Journal of The Chinese Medical Association | 2011

Angioleiomyoma of the scrotal wall

Levend Ozkan; Cuneyd Ozkurkcugil; Nazli Demir Gok; Tayyar Alp Ozkan; Kursat Yildiz

Angioleiomyoma of the scrotum is a rare benign lesion which can mimic a paratesticular tumor. Any solid mass within the scrotum is considered malignant until proven otherwise. Here, we present a case of an angioleiomyoma of the scrotum in a 33-year-old male who presented with painful scrotal mass. Scrotal ultrasonography demonstrated a solid mass in the scrotum, and surgical excision was carried out. Pathologic examination revealed that the tumor was angioleiomyoma.


Kaohsiung Journal of Medical Sciences | 2010

Effect of Memantine on Overactive Detrusor in Rats With Spinal Cord Injury

Cuneyd Ozkurkcugil; Osman Kömür; Levend Ozkan

The aim of this study was to determine the effect of memantine on overactive detrusor (OAD) 15 days after spinal cord injury (SCI) in rats. Twenty‐eight adult Wistar rats were used in this study. Fourteen animals served as normal controls, while 14 underwent spinal cord transection (clip compression technique) at the 10th thoracic vertebra. Fifteen days after SCI, all animals underwent urodynamic testing to confirm OAD. Memantine (16 mg/kg) was injected intraperitoneally into rats with SCI and OAD. Parameters measured included voiding volume, micturition pressure, resting bladder pressure, the period between micturitions and the maximum pressure of the OAD during the filling period. Results have showed that OAD developed in 8/14 animals (57.1%). OAD was resolved in 5/8 (62.5%) of these animals after memantine administration. Resting bladder pressure was significantly different in dependent groups (p < 0.05). Micturition pressure increased after SCI but decreased in rats with SCI after memantine injection. However, the period between micturitions was prolonged in both SCI and memantine groups, compared with normal rats. These results show that memantine could be useful for treating neurogenic OAD after SCI by modulating the micturition reflex pathway. Memantine may also provide an alternative treatment option for OAD in the future.


Nöro Psikiyatri Arşivi | 2014

Aşırı Aktif Mesane Hastalarının Afektif Mizaç Özellikleri

Ali Saribacak; Kürşat Altinbaş; Hasan Yilmaz; Alp Özkan; Levend Ozkan; Timuçin Oral

INTRODUCTION Overactive bladder (OAB) is generally characterized by urinary urgency with or without incontinence and increased frequency of voiding and nocturia. Although animal studies have demonstrated the relationship between defective serotonergic neurotransmission and OAB, its etiology is still unclarified. Temperament profiles are hypothesized to be related with serotonergic activity and are studied in many psychosomatic disorders. Thus, we assume that OAB is related with a certain type of temperament. METHOD 29 patients, who were admitted to the urology outpatient clinic at Kocaeli University and clinically diagnosed with OAB syndrome, were recruited for the study. Temperament profiles were evaluated with the Temperament Evaluation of Memphis Pisa Paris and San Diego Autoquestionnaire (TEMPS-A). Depressive, hyperthymic, cyclothymic, anxious and irritable temperament scores in patients were compared with those in 25 healthy controls. RESULTS Patient and control groups were similar in terms of age (p=.65), sex (p=.64) and educational level (p=.90). Anxious temperament scores were higher (p=.02) and hyperthymic temperament scores were lower (p=.02) in patients with OAB compared to controls. Depressive, cyclothymic and irritable temperament scores were similar in both groups. There was no significant differences between men and women in both groups in terms of different temperament profile scores. CONCLUSION Hypothetically, there might be an association between anxious temperament and OAB syndrome reflecting serotonergic dysfunction. However, OAB syndrome must be considered from the aspect of the interdependence of psychosomatic implications in a narrow sense and psychosomatic dimensions due to the psychological predisposition in the individual case.


Journal of Clinical and Analytical Medicine | 2013

Inflammatory Myofibroblastic Tumor of the Bladder

Ali Saribacak; Levend Ozkan; Melih Culha; Kursat Yildiz

DOI: 10.4328/JCAM.656 Received: 24.03.2011 Accepted: 01.04.2011 Printed: 01.05.2013 J Clin Anal Med 2013;4(3): 239-40 Corresponding Author: Ali Saribacak, Yerkoy Devlet Hastanesi Uroloji Klinigi Yerkoy, Yozgat, Turkiye. T.: +90 3545162470 (4031) GSM: +905327086077 F.:+90 3545166147 E-Mail:[email protected] Ozet Mesanenin inflamatuar miyofibroblastik tumoru (IMT) nadir gorulmekle birlikte embriyonel rabdomyosarkom ve leiomyosarkomdan ayrimi radikal girisimlerden kacinilmasi acisindan onemlidir. Bu yazida, 32 yasinda makroskopik hematuri ile basvuran ve IMT tanisi konulan bir hastanin ilginc sistoskopik gorunumu ve tedavisi sunulmustur.


Journal of Clinical and Analytical Medicine | 2012

Natural Course of Tunica Albuginea Fibrosis and Antifibrotic Effect of Intralesional Verapamil Injec

Levend Ozkan; Ali Saribacak; Tayyar Alp Ozkan; Hasan Yilmaz; Kursat Yildiz; Melih Culha

1 Levend Özkan1, Ali Sarıbacak2, Tayyar Alp Özkan1, Hasan Yılmaz1, Kürşat Yıldız3, Melih Çulha1 1Üroloji Anabilim Dalı, Kocaeli Üniversitesi Tıp Fakültesi, Kocaeli, 2Üroloji Kliniği, Yerköy Devlet Hastanesi, Yozgat, 3Patoloji Anabilim Dalı, Kocaeli Üniversitesi Tıp Fakültesi, Kocaeli, Türkiye Penil Fraktürün Konservatif Tedavisi / Conservative Treatment of Penile Fracture Natural Course of Tunica Albuginea Fibrosis and Antifibrotic Effect of Intralesional Verapamil Injection in Rabbits with Penile Fracture Model


International Urology and Nephrology | 2010

Effects of anesthetics on cystometric parameters in female rats

Cuneyd Ozkurkcugil; Levend Ozkan


International Journal of Clinical and Experimental Medicine | 2014

Management of recurrent bulbar urethral stricture-a 54 patients study with Allium bulbar urethral stent (BUS)

Melih Culha; Unsal Ozkuvanci; Seyfettin Ciftci; Ali Saribacak; Murat Ustuner; Ufuk Yavuz; Hasan Yilmaz; Levend Ozkan

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