Cagri Savas

Pentoxifylline Inhibits Overflow and Reduces Intestinal Reperfusion Injury

The aim of this study was to determine the effects of pentoxifylline (Ptx) in reperfusion injury of the small bowel as a leukocyte stabilizer, free radical scavenger, and microcirculatory regulator. Ninety-six male Sprague-Dawley rats were used to determine the biochemical, histopathologic and blood flow changes of the reperfused small intestines after 30 minutes of a warm ischemic insult. Animals were divided into six groups: Sham (S), sham plus Ptx (SP), ischemia (I), ischemia plus Ptx (IP), reperfusion (R), and reperfusion plus Ptx (RP). Pentoxifylline was administered intraperitoneally at a dose of 50 mg/kg 15 minutes before ischemia. The superior mesenteric artery (SMA) was occluded distal to the right colic artery and collateral arcades were ligated as described by Megison. Sixty of the 96 rats (n = 10) were used to determine histopathologic changes, malondialdehyde (MDA), and myeloperoxidase (MPO) levels in tissue. Mucosal lesions were graded on a scale from 0 to 5 as described by Chiu. MDA and MPO levels of the intestinal mucosa were assayed to reflect the free radical formation and neutrophil sequestration, respectively. Thirty-six rats (n = 6) were used to measure blood flow changes of the intestine using 133Xe clearance technique. All data were presented as the mean values plus or minus the standard error of the means (means +/- sem). Although in the R group, mucosal injury score, blood flow, MPO, and MDA levels were higher significantly from the other groups (P < .05), in the RP group blood flow, MPO, and MDA levels were significantly decreased to the basal values (P < .05). Mucosal injury score of the RP group were lower than the reperfusion group but higher than the normal (P < .05). The authors conclude that pentoxifylline pretreatment before reperfusion stabilizes blood flow, decreases MPO and MDA levels to the normal, and attenuates but not completely prevents mucosal damage.

Ectopic adrenocortical nodules along the spermatic cord of children.

Objective: Nodules of ectopic adrenal cortex are found incidentally during inguinal operations. These rests have some clinical significance as they may undergo marked hyperplasia in conditions associated with excessive ACTH production, and occasionally may give rise to neoplasms. In the present study, it is aimed to evaluate the ectopic remnants of adrenal tissue encountered during the inguinal operations in children. Patients and Methods: Four hundred and fifty-two inguinal operations were performed on 397 children (325 male/ 72 female; mean age 2.7 years), during a period of 36 months. Nodules resembling ectopic adrenal tissue from eleven patients (2.7%) were removed and the histopathological examination was performed using hematoxylin-eosin staining. Results: Ectopic adrenal cortical tissues were found in eight male patients (2%), located within the distal end of the spermatic cord. Macroscopically, the nodules were round to oval in shape, 1 to 5 mm in diameter, and bright yellow to orange in colour. Microscopically, they had three layers of adrenal cortex surrounded by a fibrous capsule and none contained any medulla. Hyperplasia or neoplastic changes were not detected, and no fetal cortex was identified. Conclusions: It is important for surgeons to be conscious of the possibility that a nodule along the spermatic cord may be the ectopic adrenal cortical tissue. As they are associated with hyperplasia and neoplastic change, removal of ectopic adrenal cortical tissue is warranted whenever it is encountered, but a routine search for them is not mandatory.

Clinical experience of removing aerodigestive tract foreign bodies with rigid endoscopy in children.

Objectives: This study was undertaken to document the aerodigestive tract foreign body accidents among children, and to investigate the circumstances surrounding these events. Methods: A review of the charts of pediatric patients admitted with the definitive or suspicious diagnosis of aerodigestive tract foreign bodies was carried out in the period between January 1, 1998 to December 31, 2002. Results: There were 53 eligible children; 39 boys and 14 girls, with an age range of 7 months to 14 years. Food items were the most common airway foreign bodies and coins were the most common esophageal foreign bodies. Among the 32 patients who underwent bronchoscopy, no foreign body was identified in 9 patients. Among the 21 patients who underwent esophagoscopy, foreign body was removed in 19 patients. In 2 cases, large foreign bodies which we could not extract with forceps were pushed into the stomach. Conclusions: Foreign bodies in the airway and esophagus constitute a constant hazard in all age groups, which demands immediate approach and management. Although the rigid endoscopic removal of aerodigestive foreign bodies was successful in this series, the most effective treatment of foreign body accidents is their prevention.

Pentoxifylline Attenuates Reperfusion Injury in Testicular Torsion

Objectives : An experimental study was designed to evaluate the effects of pentoxifylline (Ptx) on lipid peroxidation, and histopathology in both testes after unilateral testicular torsion and detorsion. Materials and Methods : Forty adult male albino Wistar rats were randomly divided into 4 groups of sham operation, sham operation with Ptx, torsion and detorsion, torsion and detorsion with Ptx. After intraperitoneal administration of Ptx at a dose of 50 mg/kg 15 min before torsion; right testes of the rats underwent 30 min of torsion and 30 min of detorsion. Malondialdehyde (MDA) levels were assayed and histopathological changes were evaluated in both testes of all groups. Results : Unilateral testicular torsion and detorsion caused an increase in the MDA levels of both testes. Histopathological evaluation showed interstitial hemorrhage on the ipsilateral side. Pentoxifylline decreased MDA levels on both side, and attenuated interstitial injury on the ipsilateral side. Conclusions : The results of this study suggest that pentoxifylline treatment attenuates reperfusion damage on both side, possibly with its effects on blood flow and neutrophils. However, further studies are necessary to evaluate the effects of pentoxifylline on testicular torsion.

Pentoxifylline improves blood flow to both testes in testicular torsion.

Objectives: Electromagnetic and radioisotopic studies have shown thatunilateral testicular torsion causes a decrease in contralateral testicularblood flow. Pentoxifylline improves microvascular blood flow in conditionsof vascular insufficiency. An experimental study was designed to evaluatethe effects of pentoxifylline (Ptx) on blood flow to both testes duringunilateral testicular torsion and detorsion.Materials and methods: Thirty-six adult male albino Wistar rats wererandomly divided into six groups where each consisted of six rats: group1: sham operation, group 2: sham operation with Ptx, group 3: torsion,group 4: torsion with Ptx, group 5: detorsion, group 6: detorsion with Ptx.After intraperitoneal administration of Ptx at a dose of 50 mg/kg 15minutes before torsion; right testes of the rats underwent 30 minutes oftorsion and 30 minutes of detorsion. Blood flows of both testes weremeasured during torsion and detorsion simultaneously by using 133Xeclearance technique.Results: Unilateral testicular torsion caused decrease in bilateraltesticular blood flow. Pentoxifylline had no effect on testicular blood flowduring torsion. Detorsion caused a partially increase in blood flow toipsilateral (detorted) testis, but had no effect on contralateral (nontorted)testicular blood flow. Pentoxifylline administration during detorsionsignificantly increased blood flow to both testes.Conclusions: Testicular torsion is a pathological process that causesdecreased blood flow to both testes. Pentoxifylline improves blood flow toboth testes during detorsion in a rat model of testicular torsion. Furtherstudies are needed to evaluate the effects of pentoxifylline on testiculartorsion.

The effect of electromagnetic field on undescended testis after orchiopexy

Undescended testis is a common problem leading to infertility. After orchiopexy some studies support the necessity of hormonal therapy. Electromagnetic field stimulation on living tissues increase cell proliferation, protein and DNA synthesis.Sixteen prepubertal rats was objected to the fixation of left testes to the anterior abdominal wall for 30 days, right testes were removed. Another group of sixteen rats objected only to the right orchiectomy and a manipulation simulating study group without fixation. After orchiopexy, animals were divided into two groups. Both groups had eight rats. Electromagnetic field (EMF) stimulation group had the stimulation for two hours every day for ten days, while the second group did not. The sham group also divided into two groups. The first one applied EMF and name as Group CEM, the second one was sham. Weight of removed testes were measured and fixed in 10% formaldehyde for histopathological evaluation. At the creating of undescended testis and right orchiectomies a blood sample was obtained for testosterone level of prepubertal rats. After finishing EMF stimulation the rats were mated with females for 17 days. After fertility study a blood sample was obtained for testosterone assay and body weight were measured and fixed in formaline for histopathologic evaluation. All the rats were killed with overdose ether anesthesia and number of fetuses were recorded. Histopathological evaluation was based on Johnsen criteria and seminiferous tubule diameter measurements.We conclude that EMF stimulation resulted in Leydig cell proliferation, increase in testosterone level, testis weight, but decrease in germ cell population.

A battered child case with duodenal perforation

Battered child syndrome can refer to children exposed to harmful, non-accidental and preventable physical treatment by those are responsible for their care which prevents the childs physical, cognitive and spiritual development. A 28 months old boy was submitted to hospital due to abdominal blunt trauma. He had been firstly applied to Isparta Children Hospital by his parents with the complaint of fever. In the first examination, he was conscious, his general condition was poor there was respiratory acidosis, and neck stiffness was present. There were several fresh traumatic lesions on his face and left arm. His complaints were thought due to meningitis and antibiotics were started. He was transported to Suleyman Demirel University Hospital after a day because of vomiting, abdominal pain, tender, distended and silent abdomen, and air-fluid levels in direct abdominal X-rays. An old fracture of the right 9th rib was detected with chest X-ray in university hospital. Additionally, abdominal ultrasound scan showed distended bowel loops filled with fluid. Laparotomy revealed a complete rupture of the junction of the third and fourth parts of the duodenum and several hemorrhagic regions on bowel loops. The patient was discharged after 42 days. This case report described the case through both medical and legal processed in Turkey.

The effects of unilateral testicular ischemia and hemicastration on contralateral testicular IGF-1 level, histology and lipid peroxidation

Hemicastration is followed by compansatoryhypertrophy whereas unilateral testiculartorsion is followed by atrophy in contralateraltesticle in rats. Insulin-likegrowth factor (IGF-1) has important roles intesticular paracrine and autocrine functions. Inthis study it was aimed to compare ischemicparameters and IGF-1levels in the contralateral testicle inunilateral spermatic cord ligation, testiculartorsion, and hemicastratron. 32 wistar ratswere equally altocated into sham,ligation, torsion, and hemicastration groups.In ligation group, right spermatic cord wasligated with 3/0 silk suture. In thetorsion group, right testis was tcrsed for720 degrees. In hemicastration group, rightorchiectomy was done. 48 hours later leftorchiectomy was done in all groups.Malondialdehyde (MDA) and IGF-1 levels weredetermined in the testicle. Average values ofthe groups werecompared with Anova followed by Dunnett T3multiple comparison tests. MDAlevels were significantly reduced in ligationand torsion groups (p < 0.05). This reductionwas more prominent in hemicastration group(p < 0.05). Contralateral testicular IGF-1levels in ligation and torsion groups were notdifferent compared with the sham group. Lefttesticular IGF-1 level in the hemicastrationgroup was decreased significantly comparedwith other groups (p < 0.05). Histological.changes evaluated. Contralateral Johnsenstesticular biopsy scores were significantlydecreased in all experimental groups but meantubular diameter was not changed in all groups.

Comparison of preputial sac and urine cultures in healthy children

The aim of the present study was to examine subpreputial bacteriology and to compare it with the urine cultures of healthy male children. Seventy-two male children were divided into two groups as A and B according to age. In both groups preputial sac and urine cultures were taken simultaneously. Gram (+) enteric cocci were the most common isolated pathogens from the preputial sac in group B. Enterobacter, E. coli and staphylococci species were isolated from the urine cultures of three patients in group B. We could not find any difference between the preputial sac swabs of group A and B patients, but the isolation rate of urine cultures of group A patients was significantly higher than group B (p < 0.05). The findings of the present study support a potential role of the prepuce acting as a reservoir of faecal bacteria in the pathogenesis of UTI in male infants, especially in the first year of life. Improved penile hygiene after the first year of life does not alter the subpreputial bacteriology, but significantly decreases the contamination of urine.

The Effect of N ω-Nitro- l -Arginine Methyl Ester and l -Arginine on Lung Injury Induced by Abdominal Aortic Occlusion–Reperfusion

PurposeThe aim of this study was to examine the effects of Nω-nitro-l-arginine methyl ester (l-NAME) and l-arginine on lung injury after aortic ischemia–reperfusion (IR).MethodsTwenty-four Wistar-Albino rats were randomized into four groups (n = 6) as follows: Control (sham laparotomy), Aortic IR (30 min ischemia and 120 min reperfusion), l-Arginine (intraperitoneal 100 mg kg−1 live weight)+aortic IR, and l-NAME (intraperitoneal 10 mg kg−1 live weight)+aortic IR. In the lung specimens, the tissue levels of malondialdehyde (MDA), vascular endothelial growth factor (VEGF), and nitric oxide (NO) were measured and a histological examination was done.ResultsAortic IR increased MDA, VEGF, and NO. l-Arginine further significantly increased MDA and NO, and decreased VEGF (P < 0.05 vs aortic IR). l-NAME significantly decreased MDA and NO (P < 0.05 vs l-arginine+aortic IR) and increased VEGF (P < 0.05 vs other groups). A histological examination showed the aortic IR to significantly increase (P < 0.05 vs control) while l-arginine also further increased (P > 0.05 vs aortic IR), whereas l-NAME caused a significant decrease in pulmonary leukocyte infiltration (P < 0.05 vs aortic IR).ConclusionsOur results indicate that l-arginine aggravates the lung injury induced by aortic IR, while l-NAME attenuates it.