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    Seref Basal

    Purpose: The miniaturized percutaneous nephrolithotomy (mPNL) can be performed by using a very wide range of different access sheaths (14-22 Fr).It has been well known that tract size is one of the main parameters affecting the... more
    Purpose: The miniaturized percutaneous nephrolithotomy (mPNL) can be performed by using a very wide range of different access sheaths (14-22 Fr).It has been well known that tract size is one of the main parameters affecting the complication rates in PNL. We aimed to compare 21 Fr with 16.5 Fr mPNL tract sizes in adult patients. Material and methods: From May 2013 to April 2018, 604 patients with kidney stone underwent mPNL in our department. The study was designed as retrospective and match-pair analysis was the preferred method for the formation of groups. The 21 Fr mPNL cases were matched with 16.5 Fr mPNL cases at a 1:1 ratio, according to the patients' age, gender, body mass index, American Society of Anesthesiologists (ASA) score, stone characteristics (stone size, opacity and localization) and hydronephrosis. Patients with solitary kidney, renal anomalies, musculoskeletal abnormalities, and pediatric patients (< 18 years old) were excluded from the study. Both groups (21 Fr and 16.5 Fr) were compared in terms of demographics, stone characteristics, operative data and post-operative outcomes. Results: A total of 260 patients were included in the study (130; 21 Fr mPNL group and 130; 16.5 Fr mPNL group). The operation time was significantly shorter in 21 Fr group (21 Fr; 85.2±37.5, 16.5 Fr; 101.7±37.7 minutes, p: 0.001). Complete stone clearance rates were 76.9% and 62.3% in 21 Fr and 16.5 Fr mPNL, respectively (p: 0.01). There was no significant difference between the groups in terms of overall operative and post-operative complications. However, in subgroups analysis, post-operative fever was higher in 16,5 Fr mPNL (4 patients in 16.5 Fr, no patients in 21 Fr group, p: 0.044); steinstrasse, renal colic and post-operative JJ stent requirement rates were higher in 21 Fr mPNL procedure (p: 0.018, p: 0.031 and p: 0.046, respectively). The hospitalization time was significantly higher in 21 Fr (p: 0.01). Conclusions: Although 21 Fr mPNL procedure has advantages such as better success rates and shorter operation time, some post-operative complications (steinstrasse, renal colic, post-operative JJ stent requirement) are against of 21 Fr mPNL when compared with 16.5 Fr mPNL procedure. Further randomized prospective studies with larger patient volume are needed to confirm these results.
    The purpose of the study was to determine the life experiences and health-related quality of life (HRQOL) of patients living with a urostomy. Cross-sectional descriptive study. This prospective and descriptive study was carried out in a... more
    The purpose of the study was to determine the life experiences and health-related quality of life (HRQOL) of patients living with a urostomy. Cross-sectional descriptive study. This prospective and descriptive study was carried out in a research and training hospital in Gaziantep, Turkey; data were collected from May 2009 to September 2011. Twenty-four participants had undergone a urostomy operation at least 4 months before study participation. A form querying pertinent demographic and clinical information, combined with the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QoL Q-C30) was used for data collection. Data collection forms were sent to the patients via mail in closed envelopes. The Mann-Whitney U, the Kruskal Wallis, and Wilcoxon signed rank tests were used for the comparative statistics; statistical significance was accepted when P values were &amp;amp;amp;lt;.05. The mean age of the 24 participants was 63.45 ± 6.33 years (mean ± SD; range, 49-72 years). The average time since surgery was 9.83 ± 2.34 months (range, 4-18 months). Most respondents stated that their urostomy affected their dressing habits (83.4%), sleep patterns (91.7%), family life (91.7%), participation in social activities (91.7%), and occupation (75.0%). All participants reported problems with psychological health and sexual activity following urostomy surgery. Analysis of EORTC QoLQ-C3 scores revealed that general wellness, functional condition, and symptomatic condition mean scores were lower than population-based norms associated with this instrument (54.16 ± 15.29, 44.07 ± 9.62, and 64.31 ± 12.56, respectively). Creation of a urostomy affected the patients&amp;amp;amp;#39; lifestyle and HRQOL negatively. Determining the patients&amp;amp;amp;#39; experiences, problems, and the change in HRQOL may provide assistance in designing appropriate nursing approaches to alleviate problems adapting to a urostomy.
    To investigate the relation of testosterone-induced relaxation with smooth muscle K+ channels in human internal spermatic veins. Testosterone induces relaxation in human isolated internal spermatic veins, and this effect decreases in... more
    To investigate the relation of testosterone-induced relaxation with smooth muscle K+ channels in human internal spermatic veins. Testosterone induces relaxation in human isolated internal spermatic veins, and this effect decreases in high-grade varicocele (recently reported). The responses of isolated internal spermatic veins from patients with varicocele were recorded isometrically using a force displacement transducer. After contracting the venous rings with 45 mM KCl, relaxation with testosterone (0.1-300 μM) was recorded in the absence or presence of large conductance calcium-activated K+ channel and the voltage-sensitive K+ channel inhibitor tetraethylammonium, adenosine triphosphate-sensitive K+ channel inhibitor glibenclamide, voltage-dependent inward rectifier K+ channel inhibitor barium chloride, and voltage-sensitive K+ channel inhibitor 4-aminopyridine. Testosterone induced relaxation in human isolated internal spermatic veins in the absence of inhibitors (maximal effect 52.88±6.72, n=24). Although tetraethylammonium, barium chloride, and 4-aminopyridine did not alter the testosterone-induced relaxant responses, GLI inhibited these responses. These results have demonstrated that testosterone induces relaxation in human isolated internal spermatic veins of patients with varicocele by way of adenosine triphosphate-sensitive K+ channels.
    Oxidative stress plays a role in the mechanism of chronic kidney disease (CKD), and antioxidant regimes are regarded as promising treatment modalities. We compared the effects of cilazapril, simvastatin, and hyperbaric oxygen (HBO)... more
    Oxidative stress plays a role in the mechanism of chronic kidney disease (CKD), and antioxidant regimes are regarded as promising treatment modalities. We compared the effects of cilazapril, simvastatin, and hyperbaric oxygen (HBO) treatment on proteinuria and on oxidative stress in adriamycine (ADR)-induced proteinuria. Seventy male Sprague-Dawley rats were housed, and 60 were injected with ADR to induce nephrosis. After the stabilization of proteinuria, rats were treated for 6 weeks with simvastatin (n = 10, 4 mg/kg/day), cilazapril (n = 10, 10 mg/kg/day), HBO (n = 10, 2.8 athmosphere absolute, 90 min/daily), HBO + cilazapril (n = 10), HBO + simvastatin (n = 10), and vehicle (n = 10). After euthanization at 12 weeks, protein carbonyl (PCO), superoxide dismutase (SOD), and glutathion peroxidase (GPx) levels were analyzed from tissues. The histological alterations in the kidneys were determined by semiquantitative scoring. Protein carbonyl (PCO) levels were higher (p &amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt; 0.001), and the GPx and SOD levels were lower (p &amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt; 0.001 for all) in the nephrotic rats. Proteinuria was correlated to PCO (r = 0.483), GPx (r = -0.686), or SOD (r = -0.620) (p &amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt; 0.001 for all). Superoxide dismutase (SOD) (beta = -0.381, p = 0.02) and GPx (beta = -0.509, p &amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt; 0.001) were independently related to proteinuria levels. Both cilazapril and simvastatin significantly improved GPx, SOD, PCO, and proteinuria. When HBO was combined with either drug, the above markers further improved (p &amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt; 0.001). Both regimens caused distinct histological features, while the combination of HBO made much significant histological improvement. Both cilazapril and simvastatin regimens improve oxidative stress and proteinuria, while the effects significantly increase with the combination of HBO treatment. HBO seems to be a candidate antioxidant strategy in glomerular diseases.
    PURPOSE To evaluate patients, diagnosed with non-muscle invasive bladder cancer, according to patient specific parameters including hemoglobin level, estimated glomerular filtration rate (eGFR), body mass index (BMI) and cigarette smoking... more
    PURPOSE To evaluate patients, diagnosed with non-muscle invasive bladder cancer, according to patient specific parameters including hemoglobin level, estimated glomerular filtration rate (eGFR), body mass index (BMI) and cigarette smoking and to identify if any of these parameters matters in terms of recurrence prediction. METHODS 231 patients who have undergone transurethral resection of the bladder (TURB) between January 2015 and January 2018 and diagnosed with non-muscle invasive bladder cancer (NMIBC) were included. Patient demographic characteristics including age, sex, BMI and cigarette smoking were assessed. Hemoglobin, creatinine and eGFR values were recorded. Follow-up was performed according to the European Association of Urology (EAU) guidelines&#39; recommendations. Recurrence and progression during follow-up were recorded. RESULTS 231 patients were included in the study. Median patient BMI, Hb levels, and eGFR values were 26.51 kg/m2 (IQR 5.48), 14,2 g/dL (IQR 2.50), an...
    We performed a therapeutic endoscopic approach to iatrogenic ligation of ureters in a patient who had postoperative anuric acute renal failure after total abdominal hysterectomy/bilateral salpingo-oopherectomy and Burch operations. The... more
    We performed a therapeutic endoscopic approach to iatrogenic ligation of ureters in a patient who had postoperative anuric acute renal failure after total abdominal hysterectomy/bilateral salpingo-oopherectomy and Burch operations. The cause of ...
    Abstract Objective Our aim is to compare the serum SIRT1 levels between patients with hypogonadotropic hypogonadism and healthy subjects. Material and method Twenty-five male patients diagnosed with isolated hypogonadotropic hypogonadism... more
    Abstract Objective Our aim is to compare the serum SIRT1 levels between patients with hypogonadotropic hypogonadism and healthy subjects. Material and method Twenty-five male patients diagnosed with isolated hypogonadotropic hypogonadism (IHH) and thirty healthy male as a control group were included in the study. Serum SIRT1, hormone levels and biochemical parameters, age, body mass index and insulin resistance were compared in both groups. Results Mean serum SIRT1 levels in patient and control group were 20.1 ± 11.7 ng/ml and 12.8 ± 7.1 ng/ml, respectively. Difference between both groups was statistically significant ( p  = 0.02). The difference of Homeostasis Model Assessment-Insulin Resistance index (HOMA-IR) between two groups was also statistically significant. Patient group had more insulin resistance than the control group and it was statistically significant (mean HOMA-IR 2.66 ± 1.57 vs. 1.38 ± 0.43; p  = 0.002). Conclusions This is the first human study that investigates SIRT1 levels and its relation with metabolic and hormonal parameters. We demonstrated that serum SIRT1 levels in patients with IHH were significantly higher than controls, and there is a negative correlation between testosterone and SIRT1 levels. The reason for elevated SIRT1 levels may be a compensation mechanism against both hypogonadotropic hypogonadism and insulin resistance. To understand the relation between SIRT1 and androgen deficiency, further large-scale randomized control studies are needed.
    540 enal hücreli karsinom, tüm erişkin solid tümörlerinin yaklaşık %3’ünü oluşturan erkeklerde kadınlardan 2 kat sık gözlenen ürogenital sistem tümörüdür. Anatomik konumu dolayısıyla bazı benign ve malign kitle ve oluşumlar renal hücreli... more
    540 enal hücreli karsinom, tüm erişkin solid tümörlerinin yaklaşık %3’ünü oluşturan erkeklerde kadınlardan 2 kat sık gözlenen ürogenital sistem tümörüdür. Anatomik konumu dolayısıyla bazı benign ve malign kitle ve oluşumlar renal hücreli kanserleri taklit edebilir ve bu durumun bazen preoperatif tespiti çok zor olabilir. Literatürde preoperatif değerlendirmede renal hücreli karsinomla karışan perinefrik liposarkom, perirenal hemanjiyom ve apendisiyal kistadenom olguları bildirilmiştir.1-4
    It was previously shown that nitric oxide produced by inducible nitric oxide synthase (iNOS) and peroxynitrite are responsible for cyclophosphamide (CP)-induced cystitis. Since endogenous production of peroxynitrite is known to lead to... more
    It was previously shown that nitric oxide produced by inducible nitric oxide synthase (iNOS) and peroxynitrite are responsible for cyclophosphamide (CP)-induced cystitis. Since endogenous production of peroxynitrite is known to lead to poly(ADP-ribose) polymerase (PARP) activation, in this study, the aim was to evaluate whether the PARP activation pathway is also included in the pathogenesis of CP-induced bladder ulceration in rats. A total of 48 male albino Wistar rats were divided into 5 groups. Group 1 served as control and was given 2 ml saline; four groups received a single dose of CP (200 mg/kg) with the same time intervals. Group 2 received CP only; Group 3, selective iNOS inhibitor 1400W (20 mg/kg); Group 4, peroxynitrite scavenger ebselen (30 mg/kg); and Group 5, PARP inhibitor 3-aminobenzamide (20 mg/kg). CP injection resulted in severe cystitis with continuous macroscopic hemorrhage, strong edema, inflammation, and ulceration. Moreover, bladder iNOS activation and urine n...
    Research Interests:
    The stent migrated in 1 patient and it was replaced. During a retention period of 3 to 6 months all patients continued clean intermittent catheterization without any difficulty and achieved sexual intercourse. On urethral cystoscopy we... more
    The stent migrated in 1 patient and it was replaced. During a retention period of 3 to 6 months all patients continued clean intermittent catheterization without any difficulty and achieved sexual intercourse. On urethral cystoscopy we observed that all false passages disappeared ...
    The purpose of this study was to compare the bipolar Plasma Kinetic (PK) energy and conventional monopolar ener- gy in the transurethral resection of bladder lateral wall tumors (TURB) for preventing ONR and bladder perforation. Thirty... more
    The purpose of this study was to compare the bipolar Plasma Kinetic (PK) energy and conventional monopolar ener- gy in the transurethral resection of bladder lateral wall tumors (TURB) for preventing ONR and bladder perforation. Thirty patients undergone TURB between September 2005 and December 2007 were included to the study. TURB was performed with monopolar energy in first (n:15) and with bipolar energy in second (n:15) groups. Maximum tu- mor size and number of active ONR, minor and major (required open bladder repair) bladder perforations and hospi- talization periods were noted. In the first group, 6 minor and 1 major ONR related bladder perforations were seen. No complications were observed in the second group. The number of minor perforations and hospitalization periods we- re also statistically significant between two groups. Our results showed that TUR of lateral wall bladder tumors by using PK enregy is safer than conventional monopolar energy in preventing ONR related bl...
    Materials and Methods: From May 2013 to April 2018, 604 patients with kidney stone underwent mPNL in our department. The study was designed as retrospective and match-pair analysis was the preferred method for the formation of groups. The... more
    Materials and Methods: From May 2013 to April 2018, 604 patients with kidney stone underwent mPNL in our department. The study was designed as retrospective and match-pair analysis was the preferred method for the formation of groups. The 21 Fr mPNL cases were matched with 16.5 Fr mPNL cases at a 1:1 ratio, according to the patients’ age, gender, body mass index, American Society of Anesthesiologists (ASA) score, stone characteristics (stone size, opacity and localization) and hydronephrosis. Patients with solitary kidney, renal anomalies, musculoskeletal abnormalities, and pediatric patients (&lt; 18 years old) were excluded from the study. Both groups (21 Fr and 16.5 Fr) were compared in terms of demographics, stone characteristics, operative data and post-operative outcomes.
    We evaluated the effectiveness of pulsed radiofre- quency (PRF) denervation of spermatic cord for the treatment of chronic orchialgia. Five patients diagnosed with chronic orchialgia were evaluated with a thorough medical and psychiatric... more
    We evaluated the effectiveness of pulsed radiofre- quency (PRF) denervation of spermatic cord for the treatment of chronic orchialgia. Five patients diagnosed with chronic orchialgia were evaluated with a thorough medical and psychiatric history, physical examination, and scrotal Doppler ultrasound, urinary system x-ray film, and urine analyses. One of the patients had bilateral chronic orchialgia. All of the patients had pain for a period of at least 3 months, and multiple conservative therapies failed to alleviate the pain. The patients, who had temporary pain relief after undergoing outpatient diagnostic cord block, were determined to be candidates for PRF denervation. PRF denervation of spermatic cord was performed for 6 testicular units. Visual analog scores were noted before and after the procedure. There were no pathologic conditions that indicated chronic orchialgia in any of the patients. No complications, including testicular atrophy or hypoesthesia of the scrotal or penil...
    Objective/Background: The standard treatment for tethered cord syndrome (operative vs nonoperative management) that presents in adulthood remains controversial. A comparative study of tethered cord syndrome in adulthood is needed. Design:... more
    Objective/Background: The standard treatment for tethered cord syndrome (operative vs nonoperative management) that presents in adulthood remains controversial. A comparative study of tethered cord syndrome in adulthood is needed. Design: A retrospective chart-based analysis. Methods: Patients admitted to Gulhane Military Medical Academy Department of Neurosurgery for management of caudal spinal cord tethering from June 1999 through December 2006 (N¼ 22). Results: Conus level was normal in 1 patient with split cord malformation and dermal sinus. Tight terminal filum was found in 21 patients, including postrepair myelomeningocele tethered cord in 4, lipomyelomeningocele/meningocele in 8, split cord malformation in 3, dermal sinus in 7, and syringomyelia in 3. The most common complaints were back pain (15 patients, 68.1%), bladder dysfunction (8, 36.3%), fecal incontinence (2, 9.09%), and leg pain (7, 31.8%). One patient had hydrocephalus (4.5%). Ten of 22 patients underwent surgery; ...

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