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Dive into the research topics where Erkan Hirik is active.

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Featured researches published by Erkan Hirik.


Andrologia | 2016

The prevalence of premature ejaculation in young Turkish men

Mehmet Karabakan; Aliseydi Bozkurt; Erkan Hirik; B. Celebi; Serkan Akdemir; O. Guzel; Baris Nuhoglu

This study was conducted to investigate the prevalence of premature ejaculation (PE) in young Turkish men and to evaluate PE in a population having good physical and mental health. A total of 1230 healthy university graduates aged between 24 and 30 attending the police academy having no physical or mental problems were included in the study. To identify the presence of PE, the participants were asked to complete the premature ejaculation diagnostic tool (PEDT). The mean ages in the PE and non‐PE group were 27.3 and 26.7 respectively. There was no statistically significant difference between the two groups concerning age, body mass index (BMI), smoking status and alcohol consumption (P > 0.05). The PE prevalence was found to be 9.2%. The mean PEDT score was calculated as 6.3. Of the participants, 92 scored 11 and higher (9.2%), 66 scored 9 and 10 (6.6%), and the remaining 842 obtained a score equal to or lower than 8 (84.2%). The lower prevalence of PE in young Turkish men compared to the results of studies in the literature can be attributed to the physical and mental well‐being of the participants. This study showed that the prevalence of PE in young men with good physical and mental health is lower than that found in the literature.


Andrologia | 2016

Association between serum fetuin‐A level and erectile function

Mehmet Karabakan; Aliseydi Bozkurt; Murat Gunay; B. K. Aktas; Erkan Hirik; Merve Aydin; Baris Nuhoglu

Recent studies have shown that ED is an early symptom of atherosclerosis. Fetuin‐A, a glycoprotein secreted by the liver, kidneys and choroid plexus, has been linked to systemic fibrosis and calcification in human and rat studies. Deficiency of this compound may play a role in atherosclerosis and cardiovascular disease progression. The aim of the study was to examine whether serum fetuin‐A level is related to erectile function or severity of ED. Sixty ED patients without cardiovascular disease were assigned to one of the three groups (mild, moderate or severe ED) depending on ED severity. Twenty healthy volunteers were included as the control group. The International Index of Erectile Function‐5 questionnaire was used to measure erection quality in all four groups. Mean age, body mass index, total testosterone, low‐ and high‐density lipoprotein cholesterol, and triglyceride levels did not significantly differ between the three erectile dysfunction and control groups (P > 0.05). The group with severe ED had a significantly lower mean fetuin‐A level than the mild ED and control groups. For both mild and moderate ED groups, the mean serum fetuin‐A level was significantly lower in comparison with the control group (P < 0.001). Serum fetuin‐A level may be used as a supplemental biochemical parameter in preliminary evaluation of ED.


Kaohsiung Journal of Medical Sciences | 2017

Effect of obturator nerve block during transurethral resection of lateral bladder wall tumors on the presence of detrusor muscle in tumor specimens and recurrence of the disease

Guven Erbay; Fethi Akyol; Mehmet Karabakan; Bulent Celebi; Ercument Keskin; Erkan Hirik

We investigated the effect of spinal anesthesia combined with obturator nerve block (ONB) during the transurethral resection of lateral bladder wall tumors (TUR‐BT) on the presence of detrusor muscle tissue in tumor specimens and on tumor recurrence. TUR‐BT was performed on 96 patients with a lateral bladder wall tumor under spinal anesthesia in our clinic between January 2011 and December 2015. The patients were divided into two groups: 49 patients only received spinal anesthesia and 47 patients received spinal anesthesia combined with ONB. The groups were retrospectively compared in terms of adductor muscle contraction, bladder perforation, complete tumor resection, presence of muscle tissue in the pathology material, and recurrence rate during follow‐up. The obturator reflex was significantly observed in the non‐ONB group (p < 0.05). In the ONB group, the percentages of complete resection and detrusor muscle tissue were significantly higher (p = 0.003 and p = 0.001, respectively). The postoperative recurrence rate was found to be significantly higher in the non‐ONB group than in the ONB group (p = 0.025). Spinal anesthesia combined with ONB during TUR‐BT prevent obturator reflex and facilitate complete resection including detrusor muscle tissue, independent from the size or number of tumors, thus reducing the recurrence of the disease.


Urologia Journal | 2018

Is there any relationship between serum levels of total bilirubin and the severity of erectile dysfunction

Ercument Keskin; Mehmet Karabakan; Aliseydi Bozkurt; Erkan Hirik; Ibrahim Karabulut; Murat Gunay; Murat Çakan

Objective: Recent studies have shown that atherosclerosis is associated with erectile dysfunction and the serum bilirubin level. In this study, the serum total bilirubin levels of patients with erectile dysfunction were measured to investigate the relationship between the levels of erectile dysfunction and total bilirubin. Methods: A total of 94 patients with erectile dysfunction were divided into three groups; severe erectile dysfunction (33 patients), moderate erectile dysfunction (31 patients), and mild erectile dysfunction (30 patients). In addition, a control group was formed with 31 healthy men. The International Index of Erectile Function-5 Questionnaire was used to measure the quality of erection in all the groups. The body mass index was calculated for all the participants. The serum glucose, low-density lipoprotein and high-density lipoprotein, cholesterol, triglyceride, total bilirubin, and total testosterone levels were also determined. Results: No statistically significant difference was observed between the groups in terms of the mean age, hypertension, smoking status, alcohol use, cardiovascular diseases, hepatobiliary disease, diabetes mellitus, and levels of total testosterone, low-density lipoprotein–cholesterol, and triglyceride. However, high-density lipoprotein, body mass index, and total bilirubin were significantly lower compared to the control group (p < 0.001). The serum total bilirubin level was found to be 0.41 ± 0.21 ng/dL in the severe erectile dysfunction, 0.43 ± 0.19 ng/dL in the moderate erectile dysfunction, and 0.48 ± 0.11 ng/dL in the mild erectile dysfunction groups (p < 0.001). Conclusion: Considering the significant differences between the erectile dysfunction and control groups in terms of serum total bilirubin levels, a low level of bilirubin may have a role in the etiology of erectile dysfunction.


The Korean Journal of Physiology and Pharmacology | 2017

Effect of etoricoxib on experimental oxidative testicular ischemia-reperfusion damage in rats induced with torsion-detorsion

Turgut Yapanoglu; Fatih Ozkaya; Ali Haydar Yilmaz; Renad Mammadov; Ferda Keskin Cimen; Erkan Hirik; Durdu Altuner

Etoricoxib features antioxidant and anti-inflammatory properties concomitantly, suggesting that it may be beneficial in testicular ischemia reperfusion (I/R) damage. Our aim is to investigate the effects of etoricoxib on testicular I/R damage induced with torsion-detorsion (TD). The etoricoxib + torsion-detorsion (ETD) groups of animals were given etoricoxib in 50 and 100 mg/kg of body weight (ETD-50 and ETD-100), while the testes torsion-detorsion (TTD) and sham operation rat group (SOG) animals were given single oral doses of distilled water as a solvent. TTD, ETD-50 and ETD-100 groups were subjected to 720° degrees torsion for four hours, and detorsion for four hours. The SOG group was not subjected to this procedure. Biochemical, gene expression and histopathological analyses were carried out on the testicular tissues. The levels of malondialdehyde (MDA), myeloperoxidase (MPO), interleukin-1 beta (IL-1β) and tumor necrosis factor alpha (TNF-α) were significantly higher, and the levels of total glutathione (tGSH) and glutathione reductase (GSHRd) were significantly lower in the TTD group, compared to the ETD-50, ETD-100 and SOG groups. Etoricoxib at a dose of 100 mg/kg better prevented I/R damage than the 50 mg/kg dose. Etoricoxib may be useful in clinical practice in the reduction of I/R damage on testes caused by torsion-detorsion.


Revista Internacional de Andrologia | 2017

Effect of anakinra, an interleukin one beta antagonist, on oxidative testicular damage induced in rats with ischemia reperfusion

Erkan Hirik; Bahadir Suleyman; Renad Mammadov; Turgut Yapanoglu; Ferda Keskin Cimen; Nihal Cetin; Nezahat Kurt

BACKGROUND It has been reported in the literature that proinflammatory interleukin-1 beta (IL-1β) is increased in cases of testicular ischemia reperfusion (I/R) damage. This information suggests that anakinra, an IL-1β antagonist, may be effective in testicular I/R damage. OBJECTIVE In our study, we investigated the effect of anakinra on testicular I/R damage induced in rats with torsion/detorsion. METHODS The 50mg/kg anakinra+testicular torsion/detorsion (KTD-50) and 100mg/kg anakinra+testicular torsion/detorsion (KTD-100) groups received an intraperitoneal (i.p.) injection of 50mg/kg and 100mg/kg of anakinra, respectively. In turn, the testicular torsion/detorsion (TTD) and sham operation (SOG) groups received a single dose of distilled water as a solvent 1h before ketamine anaesthesia. After the testes of the TTD, KTD-50 and KTD-100 groups were subjected to torsion and detorsion for 4h each, the rats were killed with a high-dose anaesthesia, and their testicles were removed and evaluated through biochemical, gene expression and histopathological examinations. The results were evaluated in comparison with those of the SOG group. RESULTS The levels of malondialdehyde (MDA), myeloperoxidase (MPO) and IL-1β showed significant increases in the TTD group, which underwent torsion/detorsion, compared to the KTD-50, KTD-100 and SOG groups. Conversely, the levels of glutathione (tGSH), glutathione peroxidase (GPO) and glutathione s-transferase (GST) were found to be significantly higher in the KTD-50, KTD-100 and SOG groups than in the TTD group. CONCLUSION Anakinra at a 100mg/kg dose histologically suppressed better oxidative stress and tunica albuginea, germ cell, seminiferous tubule and interstitial damage in the testicular tissue compared to a 50mg/kg dose. Experimental results indicate that anakinra might be beneficial in the attenuation of testicular I/R damage.


Archivio Italiano di Urologia e Andrologia | 2016

Results of tadalafil treatment in patients following an open nerve-sparing radical prostatectomy

Erkan Hirik; Aliseydi Bozkurt; Mehmet Karabakan; Özkan Onuk; Mustafa Bahadir Can Balci; Memduh Aydin; Murat Çakan; Baris Nuhoglu

PURPOSE To evaluate the effect of postoperatively administering a low daily dose of tadalafil on the erectile function of patients who underwent a nerve-sparing radical prostatectomy (NSRP) due to localized prostate cancer (PCa). MATERIALS AND METHODS Of 138 patients, who underwent NSRP due to PCa between 2012 and 2014, 55 patients who had not had pre-operative erectile dysfunction (ED) were included in the study. The mean age of the patients was 64 (54-72). On the 15th day after surgery, after ultrasound evaluation, all 55 patients started on a daily dose of 5 mg tadalafil that was continued for 2.5 months. The erectile function of patients was evaluated pre-operatively, post-operatively, and at the 3rd and 6th month after surgery using the International Index of Erectile Function (IIEF-5) test. None of the patients was treated with hormonal therapy or radiotherapy before or after surgery. RESULTS Three patients were excluded from the study due to the adverse effects of tadalafil and two patients elected to discontinue the treatment. Of the remaining 50 patients whose pre-operative erectile function had been found normal, at 3 months after surgery, 36 (72%) had normal erectile function; of the remaining patients in the study six (12%) presented with mild, two (4%) with moderate, and six (12%) with severe ED. Six months after surgery, 35 patients (70%) had normal erectile function while seven (14%) had mild, three (6%) moderate and five (10%) severe ED. There was no statistically significant difference between the results obtained at the 3rd and 6th month follow-up (p > 0.05). Three patients reported adverse effects with tadalafil including flushes in 2 (3.6%) and a headache in 1 (1.8%). CONCLUSIONS The administration of a 5 mg post-operative dose of tadalafil to patients that had undergone a bilateral NSRP was found to have a positive effect on the recovery and maintenance of erectile function. However, there is still a need to investigate a larger series of cases.


Case reports in urology | 2014

Urethrogluteal Fistula Developing Secondary to the Use of Clean Intermittent Self-Catheterization: First Case Report in the Literature

Aliseydi Bozkurt; Mehmet Karabakan; Mehmet Soyturk; Erkan Hirik; Baris Nuhoglu

Clean intermittent self-catheterization is the standard method for bladder evacuation in these patients today. The patient was diagnosed with urethrogluteal fistula and gluteal-perineal abscess by radiological evaluation. Gluteal drainage decreased after cystostomy. In our paper, a case of urethrogluteal fistula and pelvic urinoma that developed as a result of the use of clean intermittent self-catheterization (CISC), which is rarely found in the literature, is presented.


Urology Journal | 2015

Safety and Efficacy of Bipolar Versus Monopolar Transurethral Resection of the Prostate: A Comparative Study.

Erkan Hirik; Aliseydi Bozkurt; Mehmet Karabakan; Hüseyin Aydemir; Binhan Kagan Aktas; Baris Nuhoglu


Türkiye Klinikleri Üroloji - Özel Konular | 2018

Benign Prostat Hiperplazisi; Epidemiyoloji, Etiyoloji, Patofizyoloji ve Doğal Seyri

Erkan Hirik; Abdülsemet Altun; Murat Çakan

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