Elif Ozer

T.C. Sağlık Bakanlığı Ankara Eğitim ve Araştırma Hastanesi, Engüri, Ankara, Turkey

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Publications (12)21.61 Total impact

  • Source
    [Show abstract] [Hide abstract] ABSTRACT: Objective: Ureteral obstruction leads to permanent changes in the structure of the kidney by several mechanisms. In this study, it was hypothesized that there would be a protective effect of misoprostol against diclofenac in rats with unilateral ureteral obstruction (UUO). Materials and methods: Twenty-two female rats were randomized into 5 groups of 4 and 2 rats for the control group. The right ureter was sutured. The rats were grouped as control, contrast agent, contrast agent +N-acetylcysteine (NAC), diclofenac and diclofenac + misoprostol groups.Radiographic contrast agent was given iv on the 3rd day and other agents were administered orally for 1 week. The rats were sacrified after 1 week and histopathological and biochemical oxidative stress markers were evaluated. Results: The contrast agent and NAC group had lower rates of hemorrhage, inflammation, obstructive dilatation and fatty degeneration compared to the contrast agent only group (p < 0.05). No differences were seen in the normal kidneys. Between all the groups, there was no difference for tubule epithelium damage (p > 0.05). The contrast agent and NAC group had higher rates of antioxidant SH level compared to the contrast agent only group (p < 0.05) and lower rates of oxidative end product carbonyl groups (p < 0.05). For normal kidneys no difference was seen. No statistical difference was seen in MDA levels (p > 0.05). Statistically no difference was seen between the diclofenac group and the diclofenac and misoprostol group neither pathologically nor chemically (p > 0.05). Conclusions: These results showed that NAC is protective against radiographic contrast agent toxicity when given before and after administration in obstructed kidneys as in previous data. Misoprostol was not observed to have any protective effect against diclofenac in obstructed kidneys.
    Full-text · Article · Oct 2015
  • No preview · Article · Jul 2015 · Urology
  • [Show abstract] [Hide abstract] ABSTRACT: To enhance rat penises experimentally with rectus muscle fascia (RMF) and testicular tunica vaginalis grafts (TVG). Twelve Wistar albino rats were distributed into two equal Groups, A and B. There were six rats in each group. RMF and TVG were used to enhance rat penises in Groups A and B, respectively. Circumferences of the penises were measured preoperatively and at three different times after the operation. Two, two and eight rats were killed 10 days, 1 month and 2 months after the operation, respectively, for histopathological examinations. When we compared the measurements of preoperative and immediately postoperative circumferences, the mean increase was 23.4 ± 2.9 % in Group A and 19.9 ± 1.7 % in Group B. According to paired t test, the difference was significant (p < 0001), but the comparison between preoperative and postoperative first-month measurements was not found to be significant (p > 0.05). Histological examinations revealed an intensive inflammatory process at 10 days after the operation. Grafts were found to be totally absorbed in the first- and second-month examinations. In our study, implanted TVG and RMF could not survive because of insufficient vascularization and failure to maintain satisfactory surgical success. More studies are needed to increase the effectiveness of surgical techniques.
    No preview · Article · Apr 2015 · International Urology and Nephrology
  • [Show abstract] [Hide abstract] ABSTRACT: To determine whether testicular cryoablation caused histopathological orchiectomy, and to show its effects on serum total testosterone (t-testosterone) levels in rats. A total of 12 Wistar albino male rats were used in this study. The animals were divided into two groups, as cryoablation (9 rats) and control (3 rats) groups. Bilateral cryoablation was performed in the cryoablation group. T-testosterone levels were measured in both groups before scrotal exploration. Bilateral or­chiectomy was performed in both groups 10 days after the cryoablation procedure. T-testosterone was measured immediately before orchiectomy. Mann-Whitney U test was used for intergroup comparisons. Baseline t-testosterone levels were 1.31 (0.78-2.45) ng/mL and 0.98 (0.91-2.05) ng/mL in the cryoab­lation and the control groups, respectively (P = .92). T-testosterone levels were 0.23 (0.07-1.12) ng/mL and 2.87 (0.63-3.06) ng/mL in the cryoablation and the control groups, respectively, in the blood samples obtained at the time of orchiectomy (P = .03). Histopathological examination of rat testes revealed varying degrees of paratestic­ular inflammation and necrosis in 13 of 18 testes in the cryoablation group. None of 6 testes showed necrosis in the control group. Our study showed that histopathological orchiectomy could be obtained by cryoablation in rat testes.&nbsp.
    No preview · Article · Nov 2014 · European Urology Supplements
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    [Show abstract] [Hide abstract] ABSTRACT: Ischemia reperfusion injury can cause testicular damage and phosphodiesterase inhibitors are reported to regulate antioxidant activity. We aimed to investigate prevention of both ipsilateral and contralateral testicular damage with two different phosphodiesterase inhibitors after testicular detorsion in rats. Twenty eight adult male rats were randomly divided into four groups as follows: group 1, sham operated, (n=7); group 2, testicular torsion and detorsion (T/D) (n=7); group 3, T/D and sildenafil administered before detorsion (T/D+S) (n=7); group 4, T/D and udenafil administered before detorsion (T/D+U) (n=7). The tissue levels of malondialdehyde (MDA), total sulfhydryl (T-SH) and nitrite were evaluated. Also histopathological changes of the groups were examined. As compared to group 1, significant increased tissue levels of MDA (p=0.001), significant decreased levels of T-SH (p=0,038) insignificant increased levels of nitrite were found in group 2. In contrast, as compared to group 2, levels of MDA decreased significantly and T-SH levels increased significantly in group 3 and 4. The decrease in nitrite levels were insignificant in the last two groups. Histopathologically in group 2 rats increased hemorrhage, congestion and edema were found. Testicular injury score was lower in sildenafil and udenafil treated rats. In T/D group grades II, III and IV injury was detected while most of the specimens in the treated groups showed grade II injury. This study indicates that, intraperitoneal administration of both sildenafil and udenafil efficiently supress radical production while they decrease the histologic changes after testicular ischemia reperfusion injury.
    Full-text · Article · Apr 2014 · The Journal of urology
  • [Show abstract] [Hide abstract] ABSTRACT: Although renal cystic formations are seen frequently and arise with diverse symptoms, epidermal cyst is a very unusual cause of renal masses. A50-year-old woman was admitted to our clinic because of lumbar pain, hematuria and dysuria that lasted for 2 months. An atrophic and dysfunctional right kidney was identified. Transperitoneal laparoscopic simple nephrectomy was performed. Microscopic examination revealed typical findings of epidermoid cyst. According to the literature, intrarenal epidermal cysts are usually treated by nephrectomy because they cannot be differentiated from renal masses. To the best of our knowledge, this case report of an epidermoid cyst located in the renal parenchyma of a female patient is the first in the English-language literature.
    No preview · Article · Oct 2010 · The Kaohsiung journal of medical sciences
  • [Show abstract] [Hide abstract] ABSTRACT: Acrochordons are flesh-coloured pedunculated lesions which occur in areas of skin folds. Although they are common in other sites of the body, we report the first case of huge penile acrochordon in the literature. Clinical, pathological and surgical findings of this lesion were presented and discussed.
    No preview · Article · Feb 2004 · International Urology and Nephrology
  • [Show abstract] [Hide abstract] ABSTRACT: In this article, a 6-month-old infant with cystic dysplasia of the testis (CDT) is presented. Although different genitourinary abnormalities associated with CDT have been reported, this is the first case of the association of CDT with penoscrotal hypospadias, unilateral undescended testicle, bilateral scrotal hernia, small and hypocompliant bladder and urethral obstruction. Orchiectomy was carried out for the treatment of this rare cause of testicular cystic mass.
    No preview · Article · May 2001 · Scandinavian Journal of Urology and Nephrology
  • [Show abstract] [Hide abstract] ABSTRACT: A 9-year-old boy presented with left, intermittent testicular pain that was present for 3 days. On physical examination, left testis was grossly enlarged and firm but mildly tender. Serum alpha-fetoprotein and beta-human chorionic gonadotropin levels were within normal range. Color doppler ultrasonography which was performed to rule out testicular torsion revealed an intratesticular mass located at the upper pole of left testis and left radical orchiectomy was performed. The histopathological diagnosis was Sertoli cell tumor.
    No preview · Article · Feb 2000 · Urologia Internationalis
  • M.C. Uygur · A.I. Arik · D Erol · E Ozer · H Ustün
    [Show abstract] [Hide abstract] ABSTRACT: To investigate the applicability of quantitative evaluation of needle biopsy of the testis and any correlation between biopsy score and sperm parameters in infertile or subfertile men with varicocele. A total of 45 infertile men with clinical left varicocele were included in the study. All patients underwent left varicocelectomy and bilateral biopty gun needle biopsy of both testes. Spermiograms were obtained before and three months after the operation. The biopsy specimens were evaluated for Johnsen and Agger score, Leydig cell score, germ cell/Sertoli cell ratio, mean tubular diameter, peritubular fibrosis, and tubular and basement membrane hyalinization. Mean sperm count, motility and normally configured motile sperm counts increased 20%, 25% and 60% by month 3, respectively (P < .05). We did not observe any significant change in normally configured sperm counts. A mean of 14 tubuli per testis were obtained with single-pass needle biopsy. Johnsen and Agger scores, Leydig cell scores, mean tubular diameter and germ cell/Sertoli cell ratios of both testes were comparable. However, there was significantly less peritubular fibrosis, tubular hyalinization and basal membrane hyalinization in the right testis when compared to the varicocele-bearing left testis (P < .05). We found positive correlations between Johnsen and Agger score of varicocele-bearing left testis and preoperative normally configured motile sperm counts (Pearson's r = .34 and P < .05 and Pearson's r = .41 and P < .05, respectively). The Leydig cell score of varicocele-bearing testis correlated inversely with sperm counts (Pearson's r = -0.37, P < .05). These observations may prove of prognostic value in infertile or subfertile men with varicocele.
    No preview · Article · May 1999 · The Journal of reproductive medicine
  • [Show abstract] [Hide abstract] ABSTRACT: To evaluate the role of polytetrafluoroethylene (Gore-Tex) as a ureteral substitute in dogs after resection of a 5 to 8-cm-long middle segment. Five mongrel dogs underwent resection of the middle segment of the left ureter and segmental replacement of the resected part with segments of Gore-Tex over a double-J catheter. The double-J stents were removed at 21 days and the dogs were evaluated by excretory urography and abdominal ultrasonography 12 weeks after surgery. They were then killed and the ureters and the kidneys examined both grossly and microscopically. There was radiologic evidence of advanced hydronephrosis on the left side in all 5 dogs. Grossly, the left kidneys showed marked pelvic and proximal ureteral dilatation and atrophy of parenchyma. Severe stricture at the anastomotic sites and marked fibrous tissue around the prostheses were found. No cellular lining was found in the Gore-Tex lumen. There is no potential for ureteral replacement by Gore-Tex tube graft.
    No preview · Article · Mar 1998 · Urology
  • [Show abstract] [Hide abstract] ABSTRACT: To evaluate the protective effects of glycosaminoglycan (GAG) administration on shock-wave-induced renal histologic alterations, an experimental study using dermatan sulfate administration (DS) in rabbits was performed. The study included 45 white New Zealand rabbits; 36 were divided into two groups before shock-wave application. Animals in the first group (n = 18) received no specific medication before or after shock-wave treatment; animals in the second group (n = 18) received subcutaneous DS administration for a period of 2 months, beginning 2 weeks before shock-wave application. Following different numbers of shock-wave application (500, 1000, or 1500 shock waves), histopathologic evaluation of treated kidneys was made under light microscopy after 24 hours and 3 months. Nine animals were used for the control group. During 24-hour examination, most of the kidneys in both groups demonstrated varying degrees of histopathologic alterations, depending on the number of shock waves applied. Among the most prominent pathologic features were protein deposition with free erythrocytes in the tubular lumen, glomerular hemorrhage, tubular dilation and degeneration, protein in Bowman's capsule, hyperemia, and mononuclear cell infiltration at the interstitial level. As opposed to the 24-hour evaluation findings, long-term (3-month) follow-up examination revealed histopathologic alterations that decreased but did not totally disappear in animals receiving no DS. Glomerular basement membrane thickening, mononuclear cell infiltration and limited protein deposition in some tubules, together with cortical interstitial fibrosis, were observed to some extent in these animals. On the other hand, no severe histopathologic alteration with normal glomerular basement membrane appearance was noted in animals receiving DS medication. Our results indicated a long-term favorable protective effect of DS administration on morphologic abnormalities in rabbits undergoing shock-wave treatment. Although tubular alterations persisted to some extent, mononuclear cell infiltration has been limited and the natural appearance of the basement membrane has been well preserved in most of the treated animals.
    No preview · Article · Feb 1997 · Urology

Publication Stats

93 Citations
21.61 Total Impact Points


  • 2010
    • T.C. Sağlık Bakanlığı Ankara Eğitim ve Araştırma Hastanesi
      Engüri, Ankara, Turkey
  • 1999
    • Ministry of Health, Turkey
      Engüri, Ankara, Turkey
  • 1997
    • Ankara University
      • Department of Urology
      Engüri, Ankara, Turkey