Oxidative DNA Damage Is Increased in Living Kidney Donors.

BACKGROUND: Long-term consequences of donor nephrectomy might be reduced kidney function, increased risk for cardiovascular disease, and impaired quality of life. The purpose of the current cross-sectional study was to evaluate the relationship between clinical, laboratory, and donation-specific outcomes of living kidney donors and systemic oxidative DNA damage. METHODS: We conducted a cross-sectional study and assessed retrospectively pre- and postdonation data from 60 donors who donated between 2010 and 2015. Plasma malondialdehyde levels and 8-hydroxy-2'-deoxyguanosine/deoxyguanosine ratio (8-OHdG/dG ratio) were determined as oxidative stress markers. Catalase, carbonic anhydrase, and paraoxonase (PON) activities were measured as antioxidants. RESULTS: Approximately 3 years after donation, the hypertensive donor ratio was 12%, and 11% of the donors had glomerular filtration rate <60 mL/min/1.73 m2. Mean serum urea (P = .001) and serum creatinine levels (P = .001) were increased; creatinine clearance level (126.2 ± 35.5 vs 94.6 ± 26.8, P = .001) was decreased in the postdonation period. There was a significant positive correlation between predonation serum urea and 8-0HdG/dG ratio (r = 0.338, P = .016) and predonation serum creatinine and 8-0HdG/dG ratio (r = 0.442, P = .001), while there was a significant negative correlation between serum creatinine and PON activity (r = -0.545, P < .001). CONCLUSION: Our data have demonstrated that kidney donors exhibit increased oxidative DNA damage and decreased antioxidant activity. We propose that predonation serum creatinine is positively correlated with 8-0HdG/dG ratio and negatively correlated with antioxidant PON activity. This is the first study to demonstrate that plasma oxidative DNA damage increases in healthy kidney donors.

Lateral sided trocar site hernia following laparoscopic hernia repair: results of a long-term follow-up.

PURPOSE: Trocar site hernias (TSH) at the umbilical site following laparoscopic cholecystectomy forms the majority of the studies about TSH and there is a missing data in literature about lateral sided TSH. We aimed to evaluate the incidence and factors affecting lateral sided TSH occurrence following laparoscopic abdominal wall hernia repair (LAHR). METHODS: Patients who underwent LAHR between March 2013 and 2015 were included in the study. Open approach with blunt dissection for optical trocar insertion and z-shaped suture for closure were used in 22 cases initially (Group 1). Sharp dissection and continuous suture for closure were used for the rest of the patients (Group 2). RESULTS: 285 patients-237 females (83.2%) and 48 males (16.8%)-with a mean age of 50.14 ± 12.03 were included in the study. Most of the patients were overweight or obese and mean BMI was 29.25 ± 5.04 kg/m2. BMI was significantly higher in patients with TSH (p:0.025) and TSH occurrence is significantly higher in Group 1 patients (p < 0.001). CONCLUSIONS: Trocar insertion and closure technique have a major role in lateral sided TSH occurrence. Trying to avoid blunt dissection during trocar insertion, closure of trocar site with continuous suture and enlargement of skin incision to provide good view decreases lateral sided TSH occurrence. In addition, increase at the level of BMI has increased the probability of TSH occurrence and further studies are needed to evaluate efficiency of prophylactic prosthetic closure for obese patients.

Anal melanoma: Outcomes of current surgical approaches.

AIM: In this study, we aimed to evaluate the clinical characteristics and outcomes of the patients with anal melanoma (AM), who underwent surgical treatment. MATERIALS AND METHODS: This study was conducted in Kartal Training and Research Hospital between January 2010 and December 2017. All patients, who underwent surgical resection with a diagnosis of AM, were enrolled. RESULTS: A total of 10 patients were examined, 8 of them were females, and their average age was 69.2 years (range, 47-85 years). Abdominoperineal resection (APR) was performed in five (50%) patients, and local excision (LE) was performed in other five (50%) patients. Three patients (30%) had stage I disease, two (20%) had stage II disease, and five (50%) had stage III disease. All five patients in APR group had stage III disease. In the comparison of the survival period after surgery, the mean survival period of the APR group was 6.2 months (range, 1-16 months) while that of the LE group was 19.6 months (range, 7-43 months). CONCLUSION: LE with adjuvant radiation seems to offer good locoregional control without reducing the survival and may be an option of treatment for patients with small, superficial AM. However, APR should be offered for patients with locally advanced disease or as a salvage following recurrence.

Increased Oxidative Stress in Living Kidney Donors: Correlation of Renal Functions With Antioxidant Capacity.

BACKGROUND: Substantial attention has recently been paid to the possibility of an increased risk of chronic kidney disease (CKD) in living kidney donors. It has been demonstrated that CKD patients suffer from increased oxidative stress, which have been reported to show a strong association with several clinical problems such as accelerated atherosclerosis. The purpose of the current cross-sectional, single-center study was to evaluate the relationship between renal functions of living kidney donors and systemic oxidative stress. METHODS: A total of 55 living kidney donors operated at least 1 year ago and 40 age- and sex-matched healthy individuals were enrolled in this study. Plasma malondialdehyde (MDA) levels were determined as oxidative stress marker. Superoxide dismutase (SOD) and glutathione peroxidase (GPx) activities were measured as antioxidants. Renal function parameters and proteinuria were also assessed. RESULTS: Mean serum creatinine levels were higher (P = .022) and 24-hour creatinine clearance was lower (P = .016) in living kidney donors compared with healthy controls. Serum MDA levels were higher (P = .034), and SOD and GPx activities were lower (P = .023 and P < .001, respectively). There was a significant positive correlation between serum GPx activity and 24-hour creatinine clearance levels (r = 0.524, P < .01). A linear regression analysis showed that serum GPx activity was still significantly and positively correlated with creatinine clearance (regression coefficient = 0.416, P < .001). CONCLUSION: Our data demonstrated that living kidney donors exhibit slightly reduced kidney function, increased oxidative stress, and decreased antioxidant activity. We propose that 24-hour creatinine clearance is positively correlated with antioxidant enzyme GPx. To our knowledge, this is the first study to demonstrate the association between renal functions and antioxidant activity in kidney donors.

Analysis of the Humoral Immune Response to Human Leukocyte Antigens in Turkish Renal Transplant Candidates and Relationship Between Autoimmune Disorders.

BACKGROUND: Pre-transplant sensitization to human leukocyte antigens (HLA) is a risk factor for graft failure. The purpose of the current single-center study was to evaluate humoral immune response to HLA antigens and the possible relationship between anti-HLA antibody titer and autoimmune disorders in renal transplant candidates. METHODS: A total of 435 renal transplant candidates were analyzed; 50 sensitized patients were enrolled in this study. The HLA typing was performed by use of enzyme-linked immunoassay combined with Luminex technology. The patients were questioned for clinical evidence of hypothyroidism and systemic lupus erythematosus (SLE) and investigated for anti-nuclear antibody (ANA), anti-double-stranded DNA (anti-dsDNA), anti-thyroglobulin (anti-TG), anti-thyroid peroxidase (anti-TPO) antibodies, and thyroid function tests. RESULTS: Among 50 patients with positive panel reactive antibody, 24 (48%) were positive for class I and negative for class II, 12 (24%) were negative for class I and positive for class II, and 14 (28%) were positive for both classes I and II. The specificities of anti-HLA antibodies-A23, A68, A69, B27, B49, DR6, and DR8-were the most frequent. ANA and anti-dsDNA antibodies were not correlated with either clinical symptoms of SLE or anti-HLA antibody titer of renal transplant candidates. Similarly, anti-TG and anti-TPO antibodies were not correlated with clinical hypothyroidism or anti-HLA antibody titer. CONCLUSIONS: Our data have demonstrated the profile of anti-HLA antibodies in patients who were on the renal transplant waiting list in Turkey. The most frequent specificities of anti-HLA antibodies were A23, A68, A69, B27, B49, DR6, and DR8. There was no association between anti-HLA antibody titer and clinical and laboratory evidence of SLE and hypothyroidism.

Early Allograft Function in Renal Transplant Recipients: Is it Affected by Volatile Anesthetics?

BACKGROUND: Different inhalational anesthetics have various hemodynamic effects, either on the global circulation or on renal perfusion. The purpose of the current retrospective, single-center study was to evaluate allograft function of renal transplant recipients after transplantation surgery under either sevoflurane or isoflurane anesthesia. METHODS: From January 2004 through February 2014, a total of 240 patients undergoing renal transplantation were retrospectively enrolled in this study. The recipients were categorized into a sevoflurane or isoflurane group based on the type of volatile anesthetic used. The evaluated outcomes were serum urea and creatinine values and volume of diuresis at day 14 after transplantation. RESULTS: There were no differences between the 2 anesthesia groups regarding age, gender, duration and etiology of end-stage renal disease, duration and type of dialysis regimen, and source of transplantation (living or cadaveric). Length of hospitalization was higher in the sevoflurane group when compared with the isoflurane group (21.64 ± 11.55 days vs 17.35 ± 8.06 days; P = .033). Similarly, the sevoflurane group had more postoperative complications then the isoflurane group. Although serum creatinine levels were similar between the 2 groups, the serum level of urea was higher (89.56 ± 47.60 mg/dL vs 76.85 ± 65.42 mg/dL; P = .038) and the volume of diuresis was lower (3718.00 ± 2558.94 mL/24 hours vs 4991.25 ± 2861.90 mL/24 hours; P = .042) in the sevoflurane group when compared with the isoflurane group. CONCLUSION: Our data seem to suggest a potential role of isoflurane for improving allograft function and reducing complications more safely than sevoflurane as a volatile anesthetic in patients undergoing renal transplantation.

Infections in renal transplant patients: risk factors and infectious agents.

AIM: Infectious complications after renal transplantation (RT) are associated with significant morbidity. They continue to be the most frequent cause of mortality. We investigated the incidence of infections, the causative pathogens, and risk factors contributing to this complication during the first year. PATIENTS AND METHODS: We included demographic and clinical data of the 124 patients who underwent RT in our hospital from December 2004 to June 2010. for statistical analysis. RESULTS: Fifty (40.3%) RT recipients developed 80 episodes of infection: urinary tract (n = 68; 85%), intraabdominal (n = 4; 5%), surgical wound (n = 3; 3.8%), or central venous catheter (n = 3; 4%). Eight (10%) were bacteremic. The most commonly isolated bacteria scene (76/80) was Escherichia coli (n = 43; 56.5%) followed by Klebsiella spp. (n = 10; 13.2%) and Pseudomonas spp. (n = 10; 13.2%). Cytomegalovirus infection was detected in 2 recipients; fungal and mycobacterial infections, in no case. It was noteworthy that 52.8% of E. coli and Klebsiella spp. produced extended-spectrum beta-lactamase. Ninety percent of infections developed within 6 months after transplantation. When we compared infected versus noninfected cases, the presence of a double J catheter was the most significant risk factor (P = .018; odds ratio [OR] = 0.234; 95% confidence interval [CI] = 0.070-0.781). In contrast to the initial years after the start of RT in our hospital the incidence of infection decreased over time together with a decrease number and durations of catheterization (P = .008; OR = 2.707; 95% CI = 1.292-5.672). CONCLUSIONS: Urinary tract infections were the predominant problem with most isolates resistant to extended-spectrum antibiotics. Therefore, invasive catheters and prophylactic antibiotics should not be used for longer than necessary and infection control measures implemented to decrease the incidence of infections and bacterial resistance.

No harmful effect of mycophenolate mofetil on liver regeneration: an experimental study.

AIM: The aim of this experimental study was to examine the effects of mycophenolate mofetil (MMF) on liver regeneration in a partial hepatectomy model. METHODS: Rats were divided into 3 groups immediately following partial liver resection: saline, controls intraperitoneally (MMF; Group 1); MMF (15 mg/kg/d; Group II), and MMF (30 mg/kg/d; Group III). On days 3 and 7 following liver resection we humanely killed half of the rats in each group to measure alanine aminotransferase (ALT) and aspartate aminotransferase (AST) levels and to evaluate Ki-67 using immunohistochemistry. We calculated liver regeneration rates. RESULTS: The difference between ALT levels on days 3 and 7 was not significantly different among the groups (P = .157; P = .292; P > .05, respectively). The AST levels were significantly different at 3 days (P = .018) but not 7 days (P = .385). The Ki-67 level were different among groups at day 3 (P = .002) but not at day 7 (P = .290). Liver regeneration rates were not different among the groups either at 3 or at 7 days (P = .264 and P = .925, respectively). CONCLUSION: MMF stimulates mitosis but its effect on regeneration is not clear. MMF appeared to show no adverse effects on liver regeneration.

Knowledge and attitudes toward organ/tissue donation and transplantation among health care professionals working in organ transplantation or dialysis units.

OBJECTIVE: To evaluate the awareness and attitudes of health care professionals toward organ/tissue donation and transplantation. METHODS: We included 309 health care professionals from 27 dialysis centers and eight organ transplantation centers in Istanbul in the present study conducted from April 2008 to August 2008. The 24-item questionnaire, including items concerning sociodemographic features and knowledge about and attitudes toward organ/tissue donation and transplantation, was applied by face-to-face interviews. RESULTS: An organ/tissue donation card was completed among 77% of subjects, while 90% were identified as supporting transplantation. The main reasons identified for lack of donation were lack of confidence (59.7%), fear of procurement (31.5%), and inappropriate use of harvested organs (18.1%). CONCLUSION: In conclusion, targeting health care professionals in the first place and development of nationwide media and educational campaigns on the ethical, moral, as well as religious dimensions of transplantation and donation seem crucial to increase the number of individuals who can act as role models via their positive impact on the general public's attitudes toward organ donation.

Outcomes of renal transplantations with multiple vessels.

AIM: We reviewed our renal transplantation experience with multiple renal arteries and veins. METHOD: We divided the patients who underwent renal transplantation between 2004 and 2009 into two groups according to the vascular structure: multiple (group 1) versus single (group 2). Vascular anastomoses were primarily completed in an end-to-side manner to the external iliac artery and vein. The number of involved vessels was 51 among the 23 patients in group 1. We evaluated the function of the transplanted kidney using scintigraphic studies and serum creatinine levels. RESULTS: The male:female ratios were 15:8 and 73:30, mean ages 31.9 (range = 12-64) and 33.4 (range = 17-64) years, and the living related:cadaveric donor ratios 18:5 and 75:28 for groups 1 and 2, respectively. There was one case of acute rejection in group 1, and seven cases in group 2. The number of kidneys with delayed function was 11 in group 2 and one in group 1. Two perirenal abscesses, two urinary fistulae, one lymphocele, two hematomas around the kidney, and four renal artery stenoses were seen in group 2. The complication rates were 21.79% in group 1 and 35.92% in group 2. (χ(2) = 1.70, P > .05). The mean creatinine levels at 1 month after the transplantation were 1.21 ± 0.38 mg/dL and 1.12 ± 0.31 mg/dL in groups 1 and 2, respectively (P = .215). CONCLUSION: The incidences of postoperative complications were not different for renal grafts involving multiple versus single vessels.

Effect of mycophenolate mofetil on cerulein-induced acute pancreatitis.

AIM: The aim of this study was to determine the effects of mycophenolate mofetil (MMF) on acute pancreatitis with evaluation of biochemical and histopathological findings. MATERIALS AND METHODS: Cerulein was administered to induce acute pancreatitis in rats. Three groups of 10 rats each were formed. Animals in group 1 received physiologic saline solution. In group 2 animals received MMF at a dose of 14 mg/kg and group 3 had double doses of MMF. Alanine aminostransferase, aspartate aminotransferase (AST), amylase and bilirubin levels were assessed. Pancreatic tissues were evaluated under light microscopy for the presence of edema, acinar necrosis, hemorrhage, inflammation and perivascular infiltration. RESULTS: Amylase, serum AST, edema and inflammatory infiltration levels differed between groups (amylase: p = 0.0001, serum AST: p = 0.001, edema: p = 0.0001 and inflammatory infiltration: p = 0.002), group 1 showing the highest amylase, serum AST and edema levels. The lowest levels of edema were found in group 3. CONCLUSION: In an experimental pancreatitis model in rats, MMF proved to exert a beneficial effect on biochemical and histopathological parameters.

Lichtenstein or darn procedure in inguinal hernia repair: a prospective randomized comparative study.

BACKGROUND: The aim of this study was to assess the outcome of patients with inguinal hernia where the Moloney darn or Lichtenstein procedure was used as the surgical choice. METHOD: A herniorrhaphy procedure was performed in a total of 306 patients at our clinic between January 2003 and December 2008. The duration of operations and complication and recurrent rates were compared between the two groups. Hematoma formation, seroma collection, and wound infection were accepted as early complications, whereas chronic pain, loss of sensation at the operation site, and the rejection of mesh were accepted as late complications. RESULTS: Considering early complications as hematoma formation, the accumulation of seroma and wound infection ratios were similar in the two groups. Loss of sensation at the operation site and chronic pain, which were classified as late complications, were similar in the groups. However, in considering rejection, there were three rejections in the group where mesh was used. CONCLUSION: The darn repair method is simple, safe, and has similar recurrence rates when compared to the Lichtenstein method in inguinal hernia patients.

Effects of seprafilm and heparin in combination on intra-abdominal adhesions.

AIM: Postoperative intra-abdominal adhesion formation is a significant cause of morbidity. The aim of this study was to assess the effects of heparin and Seprafilm, which is considered the gold standard, on the prevention of intra-abdominal adhesions. METHOD: Four groups consisting of 25 rats each were formed. Cecal abrasion was performed in all animals. Group 1 was the control group with no treatment; in group 2, heparin was applied intraperitoneally; in group 3, Seprafilm was used underneath the abdominal wall, and group 4 animals were treated with both heparin and Seprafilm. Two weeks after the surgical procedure, animals were sacrificed and specimens were removed for the measurement of the grade of adhesions, according to the Mazuji classification. RESULTS: Formation of adhesions was prevented in the three study groups treated with heparin only, Seprafilm only and both heparin and Seprafilm (p < 0.001) compared with the control group. There was no statistical difference between the treatment groups. Autopsy results of the animals that died within the first week after the surgical procedure revealed intra-abdominal abscess formation and infections, which were considered as possible causes of death. CONCLUSION: Seprafilm seems to be more effective in the prevention of adhesions. In the combined application of Seprafilm and heparin, heparin showed no additive impact. Future studies are needed to detect the suitable dose and side effects of heparin for humans.

Liver failure in transplanted liver due to Amanita falloides.

Two patients underwent liver transplantation due to Amanita falloides poisoning. In one of them the clinical symptoms, signs, and laboratory findings related to liver failure were similar to the findings before the transplantation. The patient died and the pathological examination of the liver was similar to the patient's earlier explanted liver.

Renal hydatid cyst and situs inversus totalis (a case report).

Although echinococcal disease is common in some parts of the world isolated renal involvement is rare. We present a single case of a renal hydatid cyst in a patient with situs inversus totalis.

Bullet embolism of the right external iliac artery following cardiac gunshot wound (a case report).

Penetrating cardiac injury (PCI) frequently cause hemorrhage and cardiac tamponade. However peripheral embolization is very rare. In this manuscript one of the rare case of bullet embolism in the right external iliac artery, which occurred after cardiac gunshot wound is reported under the light of literature.

[Evaluation of 572 cases of blunt and penetrating thoracic trauma]. / Künt ve penetre toraks travmali 572 olgunun degerlendirilmesi.

We retrospectively evaluated 572 patients with thoracic trauma from total of 2163 trauma patients who admitted to 2nd General Surgery Emergency Service of Kartal Education and Research Hospital from January 1997 to February 2000. 501 of the patients (87.5%) were male and 71 (12.5%) were female. The range of ages 2-84 and mean age was 32.2. 337 (59%) patients had blunt and 235 (41%) had penetrating thoracic trauma. While traffic accidents (72%) were determined as the most common ethiological factor for blunt thoracic trauma, penetrating and cutting instruments injuries (82%) were the most common factor for penetrating thoracic trauma. Accompanying trauma were observed in 37.5% of cases. 332 (58%) tube thoracostomy, 185 (32.5%) conservative treatment, 41 (7.1%) thoracotomy 14 (2.4%) mechanical ventilation were carried out. The rates of mortality were 6.8% and of morbidity 3.3%. Early diagnosis and immediate appropriate treatment in thoracic trauma increases the survival.

[Evaluation of patients wounded in the 17 August 1999 Marmara earthquake]. / Depremde yaralanan hastalara yaklasim: 17 Agustos 1999 Marmara depremi deneyimimiz.

This study describes the experience of Kartal Research and Training Hospital in the Marmara Earthquake. We reviewed medical records of 698 patients admitted to our hospital in a 30 days' period after the earthquake and analysed the types of injuries, treatment, morbidity and mortality rates. The hospitalized 273 patients were grouped according to the major injury; patients with crush syndrome were analysed separately. The most frequent injuries were crush injury (23.1%), extremity fractures (16.8%) and pelvis and spine injuries (16.1%). More than two system injuries were seen most frequently in the abdominal injury (45.5%), crush injury (24.4%), and pelvis and spine injury (27.3%) groups (p < 0.05). Overall mortality rate was 7.3%. The highest mortality rates were seen in the abdominal injury (27.3%) and crush injury (20%) groups (p < 0.05). 61.9% of the patients with crush syndrome underwent fasciotomy due to the compartment syndrome; hemodialysis was performed in 31 patients. The most serious problem with earthquake is organization in the earthquake area, between hospitals and in hospitals. Crush injury is the major injury seen earthquakes. Early diagnosis and proper treatment should be done to improve survival.