Hayrettin Ozturk

Hayrettin Ozturk
Bolu Abant Izzet Baysal University · Department Pediatric Surgery and Pediatric Urology

Prof. Dr.

About

128
Publications
14,935
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1,195
Citations
Additional affiliations
June 2021 - present
Journal of Bionic Memory
Position
  • Editor
January 2018 - present
Experimental Biomedical Research
Position
  • Editor

Publications

Publications (128)
Article
Full-text available
Objectives: We aimed to evaluate the effectiveness of sesamol in preventing the progressive renal damage caused by complete unilateral ureter obstruction (CUUO). Methods: Twenty four Wistar rats were separated into three groups: In the group 1 rats (the sham-control, n = 8), the ureters were exposed and manipulated, but not ligated. In the group 2...
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Background: Inferior vena cava (IVC) ultrasound measurement is a reliable indicator used in the assessment of intravascular volume status. The aim of this study was to evaluate intravascular volume changes in pediatric patients by measuring the IVC diameter and collapsibility index (CI) in children whose oral feeding was restricted preoperatively....
Article
Introduction: Although several cytokines, chemokines, and growth factors have been suggested to play a role in the development of bladder fibrosis and functional changes, the mechanisms that are effective in the pathogenesis of partial bladder outlet obstruction (pBOO)-induced bladder fibrosis are not well understood. Objective: We investigated...
Article
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The aim of the study is to investigate the effects of pentoxifylline (PTX) on the renal tubular cell injury and stone formation in a hyperoxaluric rat model induced by ethylene glycol and its possible underlying mechanisms. The study was performed with 30 male Wistar rats and randomized into three groups of teen. The sham-control (group 1) received...
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To evaluate the effects of nicorandil in a rat kidney model of partial unilateral ureteral obstruction (PUUO). Thirty male rats were randomly divided into three groups as follows: (1) Group 1 (Sham-control), ureters of the rats were manipulated but not ligated; (2) Group 2 (PUUO-untreated), PUUO was performed with two-thirds of the left ureter embe...
Article
Background: Renal ischemia/reperfusion (I/R) injury is a common cause of acute kidney injury. The pathologic mechanisms underlying renal I/R injury are complicated, involving reactive oxygen species, necrosis, cell apoptosis, and inflammation, but the exact mechanisms remain unclear. Objectives: This study aimed to investigate the effect of oxyma...
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Condyloma acuminatum is a common sexually transmitted diseases in adults, but its presence in children is rare and could be associated with sexual abuse. We are reporting this case because of the rarity of presence of warts on the penis and the scrotum of a child, which certainly could not have been used for sexual purposes. Surgical excision of wa...
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Benzalkonium chloride is a skin antiseptic agent. It should be diluted before usage for cleaning of mucosal membranes; otherwise it may result in severe damage on mucosa. Herein we will report a 2 months old baby who took 10% Benzalkonium chloride orally by an accident and consequently developed esophageal damage and larynx edema. Our aim was to ta...
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Congenital bladder diverticula (CBD) are an outpouching of the mucosa through the muscular wall of the bladder. Large CBD may be presented with a serious urological problem in childhood. A 6-year-old boy was admitted with the complaint of recurrent urinary tract infection and urinary retention. Voiding cystourethrogram revealed a bilateral large CB...
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Congenital pulmonary sequestration (CPS) is a type of thoracic malforma-tion that may be represented as a solid or cystic mass composed of non-functioning primitive tissue. It does not interact with the tracheobronchial tree and has unusual systemic blood supply. Various congenital malforma-tions may be presented with CPS. More than one-half of CPS...
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In cases with incomplete ureteric duplication, lower pole ureteropelvic junction obstruction (UPJO) may occur as an unusual entity. Surgical reconstruction of UPJO can be with different techniques such as pyeloplasty, pyeloureterostomy or ureteroureterostomy. In our case, the connecting segment distal to the pelvioureteric junction was found short...
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Crossed testicular ectopia (CTE) is a rare congenital anomaly of testicular descent in which migration of one testis towards the opposite inguinal canal. The ordinary presentation is that of ipsilateral inguinal hernia and contralateral cryptorchidism. Here, a 2-year-old boy presented in surgical outpatient department with right inguinal hernia and...
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Self-inserted foreign bodies in the urethra are rare among children. We describe here a 13-year-old boy who had self-inserted a needle into his urethra. Selfinsertion of the needle wrapped with cotton into the urethra for cleaning after masturbation by patient was applied. A foreign body in the urethra was removed by cystoscopy.
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Penoscrotal transposition is a rare anomaly of the external genitalia that can be complete or incomplete while incomplete type is more common. Penile torsion is a rotational defect of the penile shaft. Various surgical methods are described for correction of incomplete penoscrotal transposition and penile torsion. Here we are presenting our experie...
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Objective: To investigate the potential protective effects of Rosmarinic acid (RA) on rats exposed to ischaemia/reperfusion renal injury. Methods: The prospective study was conducted at Abant Izzet Baysal University, Turkey, and comprised 21 male Spraque Dawley rats weighing 250-270g each. They were divided into three equal groups. Unilaterally...
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Buccal mucosa graft is usually used in a second operation. A buccal mucosa graft from the lower lip was used for large fistula reconstruction in one patients. The patient previously had been operated on several times at another center. The use of the buccal mucosa graft for urethral reconstruction in complex urethroplasties is a successful method w...
Article
To evaluate the protective effect of interleukin 10 (IL-10) on biochemical and histopathologic changes in experimental testicular ischemia or reperfusion injury (RI) in rats. Sprague-Dawley rats were randomly divided into 3 groups, each containing 7 rats; sham-control, I-R/untreated group, and I/R treated with IL-10. The ischemia period was 6 hours...
Article
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Ureteral reimplantation via pneumovesicum is a new aspect of vesicoureteral reflux management. We aimed to determine the effects of carbon dioxide (CO2) insufflation on the upper urinary tract in an experimental model. Thirty New Zealand rabbits were allocated into five groups of six rabbits each. Right ureters were cannulated for CO2 insufflation...
Article
To evaluate the efficacy of Rhodiola rosea (R. rose) extract in terms of preventing tissue injury induced by testicular torsion and subsequent ischemia/reperfusion (I/R). Twenty-one Wistar albino male rats were divided into 3 groups: group 1 = control group, group 2 = I/R group, and group 3 = I/R + extract group. After 2 hours of ischemia and 4 hou...
Article
Introduction: In this study, we investigate the effect of montelukaston histologic damage induced by testicular torsion-detorsion in rats.Methods: Twenty-one male Sprague-Dawley rats were separatedinto 3 groups, each containing 7 rats. A sham operation was performedin group 1 (control). In group 2 (ischemia-reperfusion [IR]/untreated), 1-hour detor...
Article
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To evaluate the epidemiological characteristics, etiology, and therapeutic outcome of gastrointestinal disorders in 269 patients who underwent emergency upper gastrointestinal (EUGI) endoscopy at the Emergency Department. Abdominal pain was the most common clinical indication, in 90 (33.5%) patients. The clinical reasons for emergency admission wer...
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Aim: Stretchers are frequently used to transport patients in the emergency department. Safety and comfort of the stretcher are important factors for the staff and patients. The present study investigated the effect of stretcher type on patient safety and treatment in an emergency department. Materials and methods: Doctors, nurses, interns, emergenc...
Article
A two years old boy presented with a transanal protrusion of the ventriculoperitoneal (VP) shunt catheter. A VP shunt was inserted when the boy was six-month-old for congenital hydrocephalus. He was active and neurologically normal, with no signs of meningitis and peritoneal irritation. During laparotomy, the tube was seen entering the sigmoid colo...
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To examine the clinico-epidemiological details of paediatric caustic substance ingestion (CSI) accidents in Turkey. To present the new DROOL Score (DS), which the authors developed based on the severity and duration of initial signs and symptoms (ISSs) to predict oesophageal stricture (OS) without endoscopy, and to present our management protocol b...
Article
Intestinal ischemia and reperfusion (I-R) injury of different causes, including cardiac insufficiency, sepsis, vasodepressant and cardiodepressant drugs, and complications of long-lasting surgery, represents a major clinical problem. The purpose of the present study was to investigate whether lithospermic acid (LA) can reduce oxidative stress and h...
Article
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Magnetic compression anastomoses (magnamosis) have been previously described for gastrointestinal, biliary, urinary, and vascular anastomoses. Objectives. Herein, the authors report the creation of a magnetic compression colostomy (magnacolostomy) using a simple technique in rats. Animals were randomized into two groups (n = 8, each): a magnetic co...
Article
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Splenic hemangiopericytoma is a very rare tumor. So far only 10 patients (9 adults, 1 child) have been reported in the literature and all of them were treated with total splenectomy. Herein, we report the first infant case of the splenic hemangiopericytoma in a 10-month-old girl and the first case that was treated with partial splenectomy for splen...
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To report the first creation of magnetic compression cystostomy (magnacystostomy) using an easy and simple new technique in rats. Magnetic compression anastomoses (magnamosis) have been previously described for gastrointestinal, biliary, urinary, and vascular anastomoses. Female rats were randomized into 2 groups (n = 10 each): a magnetic cystostom...
Article
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Magnetic compression anastomosis is used for gastrointestinal, biliary, and urinary anastomoses. We have developed a simple magnetic compression gastrostomy technique in rats. Animals were randomized into two groups (n = 12 each): magnetic gastrostomy (MG) and surgical gastrostomy (SG) (control). In the MG group, a magnetic insertion catheter was c...
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Peripherally inserted central catheters (PICC) have been extensively used in neonates. However, insertion of these thinnest catheters is a very delicate procedure associated with a high failure rate. In our Neonatal Surgical Intensive Care Unit, we developed a very easy new PICC insertion and evaluated the neonates treated with PICCs which were ins...
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To evaluate the effects of sirolimus (SRL) on renal injury in rats with bile duct ligation. A total of 21 male Sprague-Dawley rats weighing 220-260 g were used. Group 1 (Sham-control, n=7) rats were undergone laparotomy alone and bile duct was just dissected from the surrounding tissue. Group 2 rats (BDL/Untreated, n=7) were subjected to bile duct...
Article
Full-text available
In this study, we investigate the effect of montelukast on histologic damage induced by testicular torsion-detorsion in rats. Twenty-one male Sprague-Dawley rats were separated into 3 groups, each containing 7 rats. A sham operation was performed in group 1 (control). In group 2 (ischemia-reperfusion [IR]/untreated), 1-hour detorsion of the testis...
Article
Full-text available
Urethrocutaneous fistula and neourethral dehiscence are frequently seen complications of hypospadias surgery requiring reoperation. In this study we report the experience of one surgeon with dartos flap coverage in primary hypospadias, reoperative hypospadias and urethrocutaneous fistulas repair. A total of 23 patients underwent hypospadias and ure...
Article
Imperforate hymen is a rare congenital malformation to present with symptoms in the neonatal period. We present a case of a 5-day-old neonate with a marked interlabial swelling causing urinary retention. Imaging revealed hydrometrocolpos, hydrosalpinx, and bilateral hydronephrosis. Additionally, our patient had polydactyly of both feet and hands, a...
Article
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A 22-year-old man was admitted with abdominal pain, nausea and vomiting secondary to ingestion of multiple foreign bodies. He was found to be in increasing distress with an increase in abdominal pain and distention and no passage of foreign bodies. Patient underwent a laparotomy. Foreign bodies removed from perforated distal ileum included 8 big si...
Article
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PURPOSE: To evaluate the effects of iloprost a prostacyclin analogue on the hepatic IR injury in rats. METHODS: Forty male Sprague-Dawley rats (250-300 g) were divided into four groups each containing 10 rats;(1)- controls: data from unmanipulated animals; (2) sham group: rats subjected to the surgical procedure, except for liver I/R, and given sal...
Article
This study was aimed to evaluate the analgesic efficacy duration of analgesia, and side effects of two different doses of caudal neostigmine used with levobupivacaine in children. Sixty boys, between 5 months and 5 years, undergoing genitourinary surgery were allocated randomly to one of three groups (n =20 each). Group I patients received caudal 0...
Article
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This study was designed to determine the effects of intraperitoneally or orally administered N-acetylcysteine (NAC) on wound healing following resection and anastomosis of a colon segment with ischemia/reperfusion injury. Forty female Sprague-Dawley rats were randomly allocated to one of four groups containing 10 rats each: (1) normal resection plu...
Article
To evaluate the effects of iloprost a prostacyclin analogue on the hepatic IR injury in rats. Forty male Sprague-Dawley rats (250-300 g) were divided into four groups each containing 10 rats;(1)--controls: data from unmanipulated animals; (2) sham group: rats subjected to the surgical procedure, except for liver I/R, and given saline; (3) I/R group...
Article
Full-text available
An experimental study was designed to investigate the effect of combined pulse electromagnetic field (PEMF) stimulation plus glutamine administration on colonic anastomosis. Anastomosis of the left colon was performed in 28 rats, which were divided into four groups; Group 1: normal resection anastomosis plus oral 50 mg/kg/day glutamine; Group 2: no...
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jelit, translokacja bakteryjna i wydzielanie wolnych rodników tlenowych w zespole ciasnoty wewnątrzbrzusznej Abstract Objectives. The aim of this experimental study was to evaluate the consequences of increased intra−abdominal pressure on the small bowel and whether this pressure creates intestinal ischemia leading to oxygen free−radical production...
Article
Ischemia-reperfusion (I-R) injury remains the leading cause of acute renal failure. The purpose of this experimental study was to determine the role of dexmedetomidine on histologic alterations induced by renal I-R in rats. In the present study, thirty male Sprague-Dawley rats weighing 200-220 g were randomly assigned into three groups: the sham-co...
Article
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To investigate the effects of resveratrol on liver ischemia/reperfusion (I/R) injury in rats. A total of 40 male Sprague-Dawley rats weighing 240-290 g were randomized into four groups of ten: (1) controls: data from unmanipulated animals; (2) sham group: rats subjected to the surgical procedure, except for liver I/R, and given saline; (3) I/R grou...
Article
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Background. Low-frequency magnetic fields have been shown to affect biological In this article the effects of 50-Hz sinusoidal magnetic field (MF) stimulation and application of fibrin glue on the healing of experimental colonic anastomoses were investigated. Material and Methods. Twenty-eight rats were divided into four groups. Group 1 underwent 2...
Article
Background. The pathogenesis of infantile hypertrophic pyloric stenosis (IHPS) is poorly understood although many hypotheses have been proposed. Objectives. Assessment whether the differential expression of c-Kit, CD34, and S100 may be involved in the development of IHPS. Material and Methods. Specimens from 14 infants with IHPS and seven control s...
Article
To evaluate the effects of N-acetylcysteine NAC and vitamin C on pulmonary histological alterations in bile duct-ligated (BDL) rats. The current study was conducted in the Department of Pediatric Surgery, Medical School of Abant Izzet Baysal University, Bolu, Turkey between May 2007 and July 2007. Thirty-five males Sprague-Dawley rats, weighing 210...
Article
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This study was designed to determine the effect of molsidomine (MO), a precursor of nitric oxide (NO) donor, on hypoxia inducible factor alpha (HIF-1alpha) and Sonic hedgehog (Shh) levels considered to be involved in the development of testes ischemia/reperfusion (I-R) injury. Torsions were created by rotating ipsilateral testes 720 degrees in a cl...
Article
Background/Objectives. The present study was designed to determine the beneficial effect of dexmedetomidine (Dex) on torsion-detorsion-induced histopathological changes in experimental testicular ischemia/ reperfusion (I-R) injury in rats. Material and Methods. Twenty-one male Sprague-Dawley rats were separated into three groups of seven rats each....
Article
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Background: We evaluated the effect of continuous fluid resuscitation on the hemodynamic response and survival following massive splenic injury (MSI) in rats. Methods: Uncontrolled hemorrhagic shock was produced in 70 rats by sharp transaction. The animals were randomized into 7 groups: group 1 (n = 10), sham-operated; group 2 (n = 10), MSI was unt...
Article
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An enlarged accessory spleen, 10 x 8 x 6 cm in diameter, adjoining the spleen appearing as a mass on CT and ultrasonography is reported herein. Accessory spleen is an ectopic mass of healthy splenic tissue separate from the main body of the spleen. It should be considered the differential diagnosis of an enlarged mass in the left upper quadrant.
Article
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It is well known that diabetes mellitus is associated with impairment of testicular function. In the present study, we aimed to demonstrate the effect of melatonin on testicular damage in male rats with streptozotocin (STZ)-induced diabetes. Male Wistar rats were divided into 4 groups: (1) control group, (2) melatonin-treated nondiabetic group, (3)...
Article
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The purpose of the present study was to determine whether a correlation exits between the main trauma scoring systems and the activation of inflammatory cells and mediators such as interleukin-(IL-) 1beta, IL-6, IL-8 and tumor necrosis factor alpha (TNF-alpha) after trauma, and moreover to assess if any of these can be used to predict the outcome i...
Article
The aim of this study was to investigate the role of adhesion molecules in epididymal injury induced by ischemia-reperfusion (I-R) in the rats. About 20 male Sprague-Dawley rats were separated into two groups. A sham operation was performed in group 1 (control). In group 2 (I-R), following 6 h of unilateral spermatic cord torsion, 1-h detorsion of...
Article
Heteropagous conjoined twins are rare and umbilical heteropagous conjoined twins are extremely rare. We present a case with umbilical heteropagous conjoined twins and discuss the diagnosis and management. The parasitic component of heteropagous can be separated and treated successfully in the majority of cases.
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To investigate the role of Sonic hedgehog (Shh) on the course of liver ischemia and reperfusion (I/R) in rats, and the interaction between treatment with nitric oxide donor L-Arginine-methyl ester (L-Arg) and up-regulation of Shh expression. A total of 30 male Sprague-Dawley rats weighing 220-240 g were used in this study. Sham-control group (G1, n...
Article
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To determine contemporary patterns of presentation and trends in the management and outcome of 51 newborn infants with intestinal atresia. We retrospectively reviewed 51 cases of intestinal atresia between January 1983 and February 2003. Clinical data included antenatal history, age, gender, weight, presenting symptoms and signs, diagnostic procedu...
Article
In the kidney, prostaglandins represent important physiological modulators of renal hemodynamics and salt and water homeostasis. In this experimental study of bilaterally adrenalectomized (ADX) rats, we aimed to investigate whether the administration of selective (celecoxib) inhibitor of COX-2 would alter the morphological and functional changes in...
Article
Full-text available
This study was designed to determine the effect of L-arginine on hypoxia inducible factor alpha (HIF-1 alpha) and Sonic hedgehog (Shh) levels considered to be involved in the development of ischemia/reperfusion (I/R) injury. Unilaterally nephrectomized Sprague-Dawley rats were subjected to 60 minutes of left renal ischemia followed by 45 minutes of...
Article
Full-text available
To determine the effect of continuous limited fluid resuscitation on the hemodynamic response and survival in rats in a model of uncontrolled hemorrhage shock due to massive splenic injury (MSI) and head injury (HI). An experimental study. Dicle University Animal Research Laboratory, Turkey, between January and February 2005. Seventy Sprague-Dawley...
Article
The aim of this study was to investigate the role of adhesion molecules in epididymal injury induced by I-R in the rats. A total of 20 male Sprague-Dawley rats were separated into two groups. A sham operation was performed in group 1 (control). In group 2 (I-R), following 6 h of unilateral spermatic cord torsion, 1-h detorsion of the testis was per...
Article
Persistent Mullerian duct syndrome (PMDS) with transverse testicular ectopia (TTS) is a very rare pathological association, often discovered during repair for inguinal hernia or cryptorchidism. We present 2 cases with PMDS associated with TTS and discuss the diagnosis and management. A hysterectomy was performed, with resection of the underdevelope...
Article
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The aim of this study was to test the effect of L: -arginine methyl ester (L-Arg) on indices of free radical involvement in a rat model of experimental nephrocalcinosis. Twenty-eight Sprague-Dawley rats were randomized into four groups of seven. The first group (G1), the sham-control group received pure distilled drinking water. The second group (G...