Enver İhtiyar
Eskişehir Osmangazi University
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Featured researches published by Enver İhtiyar.
Surgery Today | 2003
Enver İhtiyar; Serap Isiksoy; Cem Algin; Adnan Sahin; Serdar Erkasap; Bekir Yasar
Ectopic thyroid is a rare developmental anomaly. We describe an unusual case of ectopic thyroid tissue found in the gallbladder wall of a 68-year-old man who underwent cholecystectomy for acute cholecystitis. Pathological findings were compatible with ectopic thyroid tissue in the gallbladder wall. This very rare pathology is discussed with a review of the revelant literature.
Journal of Surgical Research | 2011
Enver İhtiyar; N. Fatih Yaşar; Nilüfer Erkasap; Tulay Koken; Murat Tosun; Setenay Oner; Serdar Erkasap
BACKGROUND The aim of this study was to determine the effects of doxycycline on renal ischemia reperfusion (I/R) injury in a rat model of abdominal compartment syndrome (ACS). MATERIALS AND METHODS Forty-two Sprague-Dawley rats were divided into six groups. In the control group (group 1), kidney samples were collected with no manipulation; in the sham group (group 2) induction of ACS was followed by decompression. In groups 3 and 4, 1 cc of saline was administered intraperitoneally (i.p.) during the induction of ACS, and the kidneys were removed 1 and 24h after decompression, respectively. In groups 5 and 6, doxycycline (10mg/kg i.p.) was injected during the induction of ACS, and similarly all tissue samples were removed 1 and 24h after decompression, respectively. MDA, IL-1β, IL-6, TNF-α, MMP-2, and TIMP-1 were studied, and the apoptotic cells were enumerated histopathologically, and apoptosis and bcl-2 expression were assessed immunohistochemically. RESULTS Creatinine, MDA, IL-1β, and IL-6 levels were significantly higher in group 3, 1h after the reperfusion period compared with the control group, and the same parameters were significantly lower in the groups in which doxycycline was administered, 1 hour after decompression. However, there remained no difference between groups at 24h, except IL-1β, which was decreased to even lower values. TNF-α and TIMP-1 levels were not statistically different in all groups. The MMP-2 level was significantly higher in group 4 by 24h, and there remained no difference between groups 1, 2, and 6. In group 6, there were not any apoptotic cells as were observed in the other groups. The number of apoptotic cells and the expression of bcl-2 was significantly less in the groups in which doxycycline was administered. CONCLUSION Doxycycline had protective effects on I/R injury by decreasing apoptosis via reducing the level of pro-inflammatory cytokines, increasing the level of TIMP-1, and inhibiting the activity of MMP-2.
Surgery Today | 2005
Cem Algin; Adnan Sahin; Nuri Kiraz; Varol Sahintürk; Enver İhtiyar
PurposeWe investigated the effects of bombesin on disseminated candidiasis, and compared the effectiveness of bombesin with Saccharomyces boulardii against Candida albicans translocation from the gastrointestinal tract in immunosuppressed rats.MethodsSixty rats were divided into five groups of 12. Group 1 was given only a laboratory pellet diet and water during the experiments; the other four groups were orally inoculated with C. albicans; and groups 3, 4, and 5 were also given prednisolone intraperitoneally. The treatment groups consisted of group 4, given S. boulardii orally, and group 5, given bombesin subcutaneously. The rats were killed after 10 days, and the large bowel, liver, spleen, and kidneys were removed for microbiological and histopathological examination. Blood samples were taken to measure tumor necrosis factor-α (TNF-α) and interleukin-1 β (IL-1β) levels, and the results were compared.ResultsThe number of translocated C. albicans colonies from the gastrointestinal tract and the serum TNF-α and IL-β levels were significantly lower in groups 4 and 5 than in group 3 (P < 0.05). Histological analysis revealed that the bombesin-treated group (group 5) had significantly less mucosal ulceration and submucosal inflammation in the large bowel, less inflammation and necrosis in the liver, and less inflammation of the Bowman capsules in the kidney than the S. boulardii-treated group (group 4) (P < 0.05).ConclusionsThese findings show that both S. boulardii and bombesin inhibit the translocation of C. albicans from the gastrointestinal tract, although mucosal ulceration, submucosal inflammation in the large bowel, and dissemination in the liver and kidneys were significantly less severe in the bombesin-treated immunosuppressed rats.
Turkish journal of trauma & emergency surgery | 2011
Necdet Fatih Yaşar; Mahmut Kebapci; Enver İhtiyar
Pneumomediastinum and subcutaneous emphysema are very rare reported signs of colonic perforation most often associated with diverticulitis, toxic megacolon and colonoscopy. We report a case of a 60-year-old man with subcutaneous emphysema and pneumomediastinum, which developed three days after a car accident without pneumothorax. A computed tomography scan demonstrated perforation of a sigmoid diverticulum in conjunction with air. A laparotomy was performed and revealed a perforated sigmoid diverticulum, fistulized into the retroperitoneal cavity. We suspect that this diverticular perforation was caused by the deterioration of the sigmoid mesocolon secondary to the blunt abdominal trauma. To our knowledge, this is the first report in the literature about pneumomediastinum and subcutaneous emphysema caused by sigmoid diverticular rupture following mesosigmoid trauma.
Transplantation | 1996
Ersin Ates; Peeyush Sharma; Serdar Erkasap; David Talbot; Enver İhtiyar; Bekir Yasar; Haluk Kiper
In order to prevent cyclosporine nephrotoxicity in the ischemic kidney, pentoxifylline was used in a rat model. Seventy-two rats were divided into six groups according to treatment after right nephrectomy: Group I was the control, group II was treated with 25 mg/kg cyclosporine, group III underwent renal ischemia for 45 min, group IV was given 25 mg/kg cyclosporine and subjected to renal ischemia, and group V was subjected to renal ischemia and given 45 mg/kg pentoxifylline (repeated at 12, 36, and 48 hr), group VI underwent renal ischemia and was then given both cyclosporine and pentoxifylline. BUN, creatinine, and potassium levels were significantly elevated 24 hr after cyclosporine (group II), ischemia (group III), and cyclosporine and ischemia (group IV). Sodium levels remained unaffected. BUN levels normalized in all but groups III and IV after 48 hr. Creatinine levels normalized in all but group IV after 48 hr. Creatinine clearance fell in all groups and remained low even after 48 hr. Pentoxifylline prevented dramatic rises in BUN and creatinine and levels nearly normalized after 48 hr. It also histologically prevented extensive tissue damage seen after ischemia. In conclusion, pentoxifylline has a protective effect upon the kidney when subjected to cyclosporine in the presence of ischemia.
Current Therapeutic Research-clinical and Experimental | 2010
N. Fatih Yaşar; Riza Özdemir; Enver İhtiyar; Nilüfer Erkasap; Tulay Koken; Murat Tosun; Setenay Oner; Serdar Erkasap
BACKGROUND Abdominal compartment syndrome (ACS) refers to organ dysfunction and ischemia resulting from intra-abdominal hypertension (IAH). Ischemia of the gut results in the triggering of a systemic inflammatory response by releasing cytokines which, in turn, causes capillary leakage leading to bowel edema, further increasing intra-abdominal pressure and resulting in a morbid cycle of ischemia and edema. OBJECTIVE The aim of this study was to determine the effects of doxycycline on intestinal ischemia reperfusion (I/R) injury in a rat model of ACS. METHODS Sprague-Dawley rats were divided into 5 equal groups. In groups 1 and 2, saline (1 cc IP) was administered during induction of ACS and intestinal samples were removed at 1 and 24 hours, respectively, after decompression. In groups 3 and 4, doxycycline (10 mg/kg IP) was injected during induction of ACS and, similarly, intestinal samples were removed at 1 and 24 hours after decompression. In the control group (group 5), intestinal samples were collected without induction of ACS. Malon-dialdehyde (MDA), interleukin (IL)-1β, IL-6, tumor necrosis factor (TNF)-α, matrix metalloproteinase-2 (MMP-2), and tissue inhibitor of metalloproteinase-1 were studied and the apoptotic cells were enumerated histopathologically. Apoptosis and β-cell lymphoma 2 (βcl-2) expression were assessed immunohistochemically. RESULTS Thirty-five rats were evenly divided into 5 groups of 7 rats each. MDA, IL-1β, IL-6, TNF-α, and MMP-2 levels were significantly higher in group 1 one hour after the reperfusion period compared with the control group (P < 0.001, P < 0.001, P < 0.05, P < 0.001, and P < 0.01, respectively). The same parameters were significantly lower in group 3, in which doxycycline was administered, than in group 1 (P < 0.001, P < 0.05, P < 0.05, P < 0.001, and P < 0.01, respectively). However, there was no significant difference between groups 2 and 4 in the 24th hour (all, P > 0.05). The mean (SD) number of apoptotic cells and the expression of βcl-2 was highest in group 2 at 24 hours after the reperfusion period (92.5 [11.4] and 35.9 [5.0], respectively) and significantly greater than that in group 4 (P < 0.001 and P < 0.05, respectively). CONCLUSION Doxycycline was associated with protective effects against I/R injury through decreasing apoptosis via attenuating the response of proinflammatory cytokines and inhibiting the activity of MMP-2 in this rat model.
Cases Journal | 2009
Necdet Fatih Yaşar; Enver İhtiyar
The barium enema is a safe and accurate diagnostic study of the colon but, in rare cases, causes complications, such as colonic perforation. A colon weakened by iatrogenic trauma due to the enema tip and/or retention balloon, or by disease is more likely to perforate during an enema than is a normal healthy bowel. Rarely the colon may burst due to excessive transmural pressure alone. We report a case of colonic perforation during barium enema in a 72-year-old female patient, due to excessive barium applied into the rectum.
Osmangazi Tıp Dergisi | 2018
Bartu Badak; Enver İhtiyar
Oz: Bouveret sendromu, mide cikisi veya proksimal duodenumun safra taslari tarafindan tikanmasi sonucu olusan mide cikimi tikanikligi olarak tanimlanir. Safra taslarinin neden oldugu nadir bir komplikasyondur. Safra kesesi taslari, ileus, mide neoplazileri, safra yollari patolojileri ve duodenal kitleler gibi bircok nedenle karisabildigi icin erken tani koymak oldukca zorludur. Bu yazida 63 yasinda bayan hastanin tani ve tedavi surecini ve bu nadir olguyu sunmayi amacladik.
Turkish journal of trauma & emergency surgery | 2017
Necdet Fatih Yaşar; Mustafa Ufuk Uylaş; Bartu Badak; Ugur Bilge; Setenay Oner; Enver İhtiyar; Tarık Çağa; Ercüment Paşaoğlu
BACKGROUND This study compared the predictive accuracy of four scoring systems, namely Acute Physiology and Chronic Health Evaluation II (APACHE II), Sequential Organ Failure Assessment (SOFA), Simplified Acute Physiology Score II (SAPS II), and Mortality in Emergency Department (MEDS), for estimating prognosis in patients with necrotizing fasciitis. METHODS Seventy-four patients who presented with necrotizing fasciitis were retrospectively examined. The ability of the scoring systems to predict mortality was assessed by comparing the estimated mortality rates in mortality groups (survivors/non-survivors), and mortality rates among survivors and non-survivors with an estimated mortality of >10%, 30%, and 50% in the scoring systems were compared in pairs. RESULTS Estimated mortality rates in the survivor and non-survivor groups were different for all the scoring systems. The estimated mortality rates of APACHE II and SAPS II were much closer to the actual mortality rates than the other two scoring systems. When the predicted mortality rates were analyzed as limits for a mortality risk, the predicted mortality rate by APACHE II was superior to that by SAPS II. CONCLUSION The studied scoring systems had significantly higher predicted mortality rates in non-survivors than in survivors; however, they all underestimated the mortality rate. APACHE II and SAPS II were relatively superior for estimating mortality in patients with necrotizing fasciitis. APACHE II rather than the other scoring systems should be currently used.
SDÜ Tıp Fakültesi Dergisi | 2017
Bartu Badak; Necdet Fatih Yaşar; Muhammet Kandemir; Enver İhtiyar
Epididim kistleri; ozellikle peripubertal cagdaki erkek cocuklarinda gorulen, nadir olarak da yetiskin erkek ve bebeklik caginda gorulebilen rete testis, ductuli efferentes ve epididimin nadir gorulen iyi huylu kistleridir. Skrotal agri, sislik gibi sikayetlerle kendini belli edebilirken fizik muayene veya operasyon esnasinda tesadufi olarak da saptanabilirler. Bu yazida, dev bir epididim kistine sahip 70 yasindaki erkek hastayi sunmayi amacladik. Anahtar Kelimeler: Epididim kistleri, herni, agri Abstract Epididymal cysts are rare and benign cysts of rete testis, ductuli efferentes and epididymis that usually present in peripubertal males and rarely seen in adult males and infancy. They usually present with scrotal pain or mass and can also be diagnosed during physical examination or peroperatively. In this papier, we aimed to present a 70 year-old male patient who had a giant epididymal cyst. Key Words: Epididymal cysts, hernia, pain