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| 1 | Review of a challenging clinical issue:Intrahepatic cholestasis of pregnancy显示文摘Intrahepatic cholestasis of pregnancy(ICP) is a reversible pregnancy-specific cholestatic condition characterized by pruritus, elevated liver enzymes, and increased serum bile acids. It commences usually in the late second or third trimester, and quickly resolves after delivery. The incidence is higher in South American and Scandinavian countries(9.2%-15.6% and 1.5%, respectively) than in Europe(0.1%-0.2%). The etiology is multifactorial where genetic, endocrine, and environmental factors interact. Maternal outcome is usually benign, whereas fetal complications such as preterm labor, meconium staining, fetal distress, and sudden intrauterine fetal demise not infrequently lead to considerable perinatal morbidity and mortality. Ursodeoxycholic acid is shown to be the most efficient therapeutic agent with proven safety and efficacy. Management of ICP consists of careful monitoring of maternal hepatic function tests and serum bile acid levels in addition to the assessment of fetal well-being and timely delivery after completion of fetal pulmonary maturity. This review focuses on the current concepts about ICP based on recent literature data and presents an update regarding the diagnosis and management of this challenging issue. | Sebiha Ozkan Yasin Ceylan Orhan Veli Ozkan Sule Yildirim | 2015 | World Journal of Gastroenterology2015，21，23： | 53 |
| 2 | Predictive value of C-reactive protein/albumin ratio in acute pancreatitis显示文摘BACKGROUND:Serum C-reactive protein(CRP) increases and albumin decreases in patients with inflammation and infection.However,their role in patients with acute pancreatitis is not clear.The present study was to investigate the predictive significance of the CRP/albumin ratio for the prognosis and mortality in acute pancreatitis patients.METHODS:This study was performed retrospectively with 192 acute pancreatitis patients between January 2002 and June 2015.Ranson scores,Atlanta classification and CRP/albumin ratios of the patients were calculated.RESULTS:The CRP/albumin ratio was higher in deceased patients compared to survivors.The CRP/albumin ratio was positively correlated with Ranson score and Atlanta classification in particular and with important prognostic markers such as hospitalization time,CRP and erythrocyte sedimentation rate.In addition to the CRP/albumin ratio,necrotizing pancreatitis type,moderately severe and severe Atlanta classification,and total Ranson score were independent risk factors of mortality.It was found that an increase of 1 unit in the CRP/albumin ratio resulted in an increase of 1.52 times in mortality risk.A prediction value about CRP/albumin ratio >16.28 was found to be a significant marker in predicting mortality with 92.1% sensitivity and 58.0% specificity.It was seen that Ranson and Atlanta classification were higher in patients with CRP/albumin ratio >16.28 compared with those with CRP/albumin ratio ≤16.28.Patients with CRP/albumin ratio >16.28 had a 19.3 times higher chance of death.CONCLUSION:The CRP/albumin ratio is a novel but promising,easy-to-measure,repeatable,non-invasive inflammationbased prognostic score in acute pancreatitis. | Mustafa Kaplan Ihsan Ates Muhammed Yener Akpinar Mahmut Yuksel Ufuk Baris Kuzu Sabite Kacar Orhan Coskun Ertugrul Kayacetin | 2017 | Hepatobiliary & Pancreatic Diseases International2017，16，4： | 53 |
| 3 | Aetiology of idiopathic granulomatous mastitis显示文摘Idiopathic granulomatous mastitis is a rare chronic inflammatory lesion of the breast that can clinically and radiographically mimic breast carcinoma. The most common clinical presentation is an unilateral, discrete breast mass, nipple retraction and even a sinus formation often associated with an inflammation of the overlying skin. The etiology of idiopathic granulomatous mastitis is still obscure. Its treatment remains controversial. The cause may be the autoimmune process, infection, a chemical reaction associated with oral contraceptive pills, or even lactation. Various factors, including hormonal imbalance, autoimmunity, unknown microbiological agents, smoking and α 1-antitrypsin deficiency have been suggested to play a role in disease aetiology. In this review, causing factors in the aetiology of idiopathic granulomatous mastitis are reviewed in detail. | Fatih Altintoprak Taner Kivilcim Orhan Veli Ozkan | 2014 | World Journal of Clinical Cases2014，2，12： | 52 |
| 4 | Endoscopic submucosal dissection for premalignant lesions and noninvasive early gastrointestinal cancers显示文摘AIM: To investigate the indication, feasibility, safety, and clinical utility of endoscopic submucosal dissection (ESD) in the management of various gastrointestinal pathologies. METHODS: The medical records of 60 consecutive patients (34 female, 26 male) who underwent ESD at the gastroenterology department of Kocaeli University from 2006-2010 were examined. Patients selected for ESDhad premalignant lesions or non-invasive early cancers of the gastrointestinal tract and had endoscopic and histological diagnoses. Early cancers were considered to be confined to the submucosa, with no lymph node involvement by means of computed tomography and endosonography. RESULTS: Sixty ESD procedures were performed. The indications were epithelial lesions (n = 39) (33/39 adenoma with high grade dysplasia, 6/39 adenoma with low grade dysplasia), neuroendocrine tumor (n = 7), cancer (n = 7) (5/7 early colorectal cancer, 2/7 early gastric cancer), granular cell tumor (n = 3), gastrointestinal stromal tumor (n = 2), and leiomyoma (n = 2). En bloc and piecemeal resection rates were 91.6% (55/60) and 8.3% (5/60), respectively. Complete and incomplete resection rates were 96.6% (58/60) and 3.3% (2/60), respectively. Complications were major bleeding [n = 3 (5%)] and perforations [n = 5 (8.3%)] (4 colon, 1 stomach). Two patients with colonic perforations and two patients with submucosal lymphatic and microvasculature invasion (1 gastric carcinoid tumor, 1 colonic adenocarcinoma) were referred to surgery. During a mean follow-up of 12 mo, 1 patient with adenoma with high grade dysplasia underwent a second ESD procedure to resect a local recurrence. CONCLUSION: ESD is a feasible and safe method for treatment of premalignant lesions and early malignant gastrointestinal epithelial and subepithelial lesions. Successful en bloc and complete resection of lesions yield high cure rates with low recurrence. | Sadettin Hulagu Omer Senturk Cem Aygun Orhan Kocaman Altay Celebi Tolga Konduk Deniz Koc Goktug Sirin Ugur Korkmaz Ali Erkan Duman Neslihan Bozkurt Gokhan Dindar Tan Attila Yesim Gurbuz Orhan TarcinDivision of Gastroenterology Derince State Hospital Kocaeli 41900 Turkey Cem Kalayci | 2011 | World Journal of Gastroenterology2011，17，13： | 23 |
| 5 | Expression of COX-2, PCNA, Ki-67 and p53 in gastrointestinal stromal tumors and its relationship with histopathological parameters显示文摘AIM: To investigate the expression of Cyclooxygenase-2 (COX-2), proliferating cell nuclear antigen (PCNA), Ki-67 and p53 in gastrointestinal stromal tumors (GISTs) and its relationship with histopathological parameters. METHODS: Twenty-five GISTs were examined by light microscopy and immunohistochemistry. c-kit, CD34, SMA, S-100 protein, COX-2, PCNA, Ki-67 and p53 were detected immunohistochemically and the relationship was evaluated among histopathologic parameters such as mitotic index (MI), tumor grade, tumor size, COX-2, PCNA, Ki-67 and p53. RESULTS: COX-2 protein expression was found in 19 of 25 (76%) of the tumors, and expression was noted in the cytoplasm of the tumor cells. p53 was significantly related to MI and tumor grade but no relationship was found between COX-2, proliferation markers and MI, tumor grade and tumor size. CONCLUSION: COX-2 is expressed in most GISTs and it may play an important role in the proliferation and progression of these tumors or a useful marker to identify GIST. Although immunohistochemical assessment of p53 can be used for distinguishing the risk groups of GISTs, tumor size and mitotic rate should be considered at the same time. | Derya Gumurdulu Seyda Erdogan Fazilet Kayaselcuk Gulsah Seydaoglu Cem K Parsak Orhan Demircan Ilhan Tuncer | 2007 | World Journal of Gastroenterology2007，13，3： | 21 |
| 6 | Endoscopic retrograde cholangiopancreatography during pregnancy without radiation显示文摘AIM: To present our experience with pregnant patients who underwent endoscopic retrograde cholangiopancreatography (ERCP) without using radiation, and to evaluate the acceptability of this alternative therapeutic pathway for ERCP during pregnancy. METHODS: Between 2000 and 2008, six pregnant women underwent seven ERCP procedures. ERCP was performed under mild sedoanalgesia induced with pethidine HCl and midazolam. The bile duct was cannulated with a guidewire through the papilla. A catheter was slid over the guidewire and bile aspiration and/or visualization of the bile oozing around the guidewire was used to confirm correct cannulation. Following sphincterotomy, the bile duct was cleared by balloon sweeping. When indicated, stents were placed. Confirmation of successful biliary cannulation and stone extraction was made by laboratory, radiological and clinical improvement. Neither fluoroscopy nor spot radiography was used during the procedure. RESULTS: The mean age of the patients was 28 years (range, 21-33 years). The mean gestational age for the fetus was 23 wk (range, 14-34 wk). Five patients underwent ERCP because of choledocholithiasis and/orcholedocholithiasis-induced acute cholangitis. In one case, a stone was extracted after precut papillotomy with a needle-knife, since the stone was impacted. One patient had ERCP because of persistent biliary fistula after hepatic hydatid disease surgery. Following sphincterotomy, scoleces were removed from the common bile duct. Two weeks later, because of the absence of fistula closure, repeat ERCP was performed and a stent was placed. The fistula was closed after stent placement. Neither post-ERCP complications nor premature birth or abortion was seen. CONCLUSION: Non-radiation ERCP in experienced hands can be performed during pregnancy. Stent placement should be considered in cases for which complete common bile duct clearance is dubious because of a lack of visualization of the biliary tree. | Adem Akcakaya Orhan Veli Ozkan Ismail Okan Orhan Kocaman Mustafa Sahin | 2009 | World Journal of Gastroenterology2009，15，29： | 17 |
| 7 | Minimally invasive surgery for gastric cancer: A comparison between robotic, laparoscopic and open surgery显示文摘AIM To investigate the role of minimally invasive surgery for gastric cancer and determine surgical, clinical, and oncological outcomes.METHODS This is a propensity score-matched case-control study, comparing three treatment arms: robotic gastrectomy(RG), laparoscopic gastrectomy(LG), open gastrectomy(OG). Data collection started after sharing a specific study protocol. Data were recorded through a tailored and protected web-based system. Primary outcomes: harvested lymph nodes, estimated blood loss, hospital stay, complications rate. Among the secondary outcomes, there are: operative time, R0 resections, POD of mobilization, POD of starting liquid diet and soft solid diet. The analysis includes the evaluation of type and grade of postoperative complications. Detailed information of anastomotic leakages is also provided.RESULTS The present analysis was carried out of 1026 gastrectomies. To guarantee homogenous distribution of cases, patients in the RG, LG and OG groups were 1:1:2 matched using a propensity score analysis with a caliper = 0.2. The successful matching resulted in a total sample of 604 patients(RG = 151; LG = 151; OG = 302). The three groups showed no differences in all baseline patients characteristics, type of surgery(P = 0.42) and stage of the disease(P = 0.16). Intraoperative blood loss was significantly lower in the LG(95.93 ± 119.22) and RG(117.91 ± 68.11) groups compared to the OG(127.26 ± 79.50, P = 0.002). The mean number of retrieved lymph nodes was similar between the RG(27.78 ± 11.45), LG(24.58 ± 13.56) and OG(25.82 ± 12.07) approach. A benefit in favor of the minimally invasive approaches was found in the length of hospital stay(P < 0.0001). A similar complications rate was found(P = 0.13). The leakage rate was not different(P = 0.78) between groups.CONCLUSION Laparoscopic and robotic surgery can be safely performed and proposed as possible alternative to open surgery. The main highlighted benefit is a faster postoperative functional recovery. | Amilcare Parisi Daniel Reim Felice Borghi Ninh T Nguyen Feng Qi Andrea Coratti Fabio Cianchi Maurizio Cesari Francesca Bazzocchi Orhan Alimoglu Johan Gagnière Graziano Pernazza Simone D'Imporzano Yan-Bing Zhou Juan-Santiago Azagra Olivier Facy Steven T Brower Zhi-Wei Jiang Lu Zang Arda Isik Alessandro Gemini Stefano Trastulli Alexander Novotny Alessandra Marano Tong Liu Mario Annecchiarico Benedetta Badii Giacomo Arcuri Andrea Avanzolini Metin Leblebici Denis Pezet Shou-Gen Cao Martine Goergen Shu Zhang Giorgio Palazzini Vito D'Andrea Jacopo Desiderio | 2017 | World Journal of Gastroenterology2017，23，13： | 17 |
| 8 | Intrahepatic biliary cystic neoplasms:Surgical results of 9 patients and literature review显示文摘AIM: To investigate the eligible management of the cystic neplasms of the liver. METHODS: The charts of 9 patients who underwent surgery for intrahepatic biliary cystic liver neoplasms between 2003 and 2008 were reviewed retrospectively. Informed consent was obtained from the patients and approval was obtained from the designated review board of the institution. RESULTS: All patients were female with a median (range) age of 49 (27-60 years). The most frequent symptom was abdominal pain in 6 of the patients. Four patients had undergone previous laparotomy (with other diagnoses) which resulted in incomplete surgery or recurrences. Liver resection (n = 6) or enucleation (n = 3) was performed. The final diagnosis was intrahepaticbiliary cystadenoma in 8 patients and cystadenocarcinoma in 1 patient. All symptoms resolved after surgery. There has been no recurrence during a median (range) 31 (7-72) mo of follow up. CONCLUSION: In spite of the improvement in imaging modalities and increasing recognition of biliary cystadenoma and cystadenocarcinoma, accurate preoperative diagnosis may be difficult. Complete surgical removal (liver resection or enucleation) of these lesions yields satisfying long-term results. | Ali Emre Kür■at Rahmi Serin Ilgin zden Yaman Tekant Orhan Bilge Ayd■n Alper Mine Güllüoglu Koray Güven | 2011 | World Journal of Gastroenterology2011，17，3： | 15 |
| 9 | Understanding mechanisms of the pathogenesis of nonalcoholic fatty liver disease显示文摘A central issue in the understanding of the pathogenesis of nonalcoholic fatty liver disease is the problem of the underlying mechanisms which are not fully understood.In the setting of excessive central adiposity,insulin resistance is the major underlying cause of fat accumulation in hepatocytes.Because of the difficulties with human trials,several animal models have been developed for this purpose mainly characterized as follows:genetically disturbed or murine fatty liver,methionine-choline deficient diet fed or murine steatohepatitis,and high-fat or sucrose diet fed models.Although these animal models have provided useful information,none of them accurately reflect genetic,metabolic and biochemical characteristics of the human disease. | Metin Basaranoglu Serra Kayacetin Nevin Yilmaz Ertugrul Kayacetin Orhan Tarcin Abdullah Sonsuz | 2010 | World Journal of Gastroenterology2010，16，18： | 14 |
| 10 | Rare etiology of mechanical intestinal obstruction: Abdominal cocoon syndrome显示文摘Abdominal cocoon syndrome is a rare cause of intestinal obstruction with unknown etiology. Diagnosis of this syndrome, which can be summarized as the small intestine being surrounded by a fibrous capsule not containing the mesothelium, is difficult in the preoperative period. A 47-year-old male patient was referred to the emergency department with complaints of abdominal pain, nausea, and vomiting for two days. The abdominal computed tomography examination detected dilated small intestinal loops containing air-fluid levels clustered in the left upper quadrant of the abdomen and surrounded by a thick, saclike, contrast-enhanced membrane. During exploratory surgery, a capsular structure was identified in the upper left quadrant with a regular surface that was solid-fibrous in nature. Ab-dominal cocoon syndrome is a rarely seen condition, for which the preoperative diagnosis is difficult. The combination of physical examination and radiological signs, and the knowledge of 'recurrent characteristics of the complaints' that can be learned by a careful history, may be helpful in diagnosis. | Yener Uzunoglu Fatih Altintoprak Omer Yalkin Yasemin Gunduz Guner Cakmak Orhan V Ozkan Fehmi Celebi | 2014 | World Journal of Clinical Cases2014，2，11： | 13 |
| 11 | H pylori:Treatment for the patient only or the whole family?显示文摘AIM:To compare the effects of treatment of H pylori-infected individuals with the effects of treatment of individuals as well as all H pylori-infected family members. METHODS:H pylori-positive patients with similar demographic specifications were prospectively randomized with respect to treatment, with a triple regimen of either patients and all H pylori-positive family members living together (groupⅠ) or patients only (group Ⅱ). Nine months after treatment, all patients were assessed for H pylori positivity. RESULTS:There were 70 H pylori-positive patients in each group;patients in groupsⅠand Ⅱ lived with 175 and 190 H pylori-positive relatives, respectively. Age, sex and H pylori positivity rate were similar in both groups of relatives. Nine months after 14 d standard triple therapy, H pylori positivity was 7.1% in groupⅠpatients and 38.6% in group Ⅱ patients [P < 0.01, OR = 8.61 95% confidence interval (CI):2.91-22.84]. CONCLUSION:The present results indicate bad environmental hygienic conditions and close intra-familial relationships are important in H pylori contamination. These findings indicate all family members of H pylori-positive individuals should be assessed for H pylori positivity, particularly in developing countries where H pylori prevalence is high;they also suggest patients, their spouses and all H pylori-positive family members of H pylori-positive individuals should be treated for H pylori infection. | Yavuz Selim Sari Didem Can Vahit Tunali Orhan Sahin Oguz Koc Omer Bender | 2008 | World Journal of Gastroenterology2008，14，8： | 7 |
| 12 | Intestinal obstruction due to phytobezoars: An update显示文摘The term bezoar refers to an intraluminal mass in the gastrointestinal system caused by the accumulation of indigestible ingested materials, such as vegetables, fruits, and hair. Bezoars are responsible for 0.4%-4% of cases of mechanical intestinal obstruction. The clinical findings of bezoar-induced ileus do not differ from those of mechanical intestinal obstruction due to other causes. The appearance and localization of bezoars can be established with various imaging methods. Treatment of choice depends on the localization of the bezoar which makes the clinical findings. | Enis Dikicier Fatih Altintoprak Orhan Veli Ozkan Orhan Yagmurkaya Mustafa Yener Uzunoglu | 2015 | World Journal of Clinical Cases2015，3，8： | 7 |
| 13 | Clindamycin-induced acute cholestatic hepatitis显示文摘我们为牙齿的感染在 clindamycin 的管理以后在一个 42 岁的女人报导尖锐 hepatotoxicity 的一个案例。在治疗的 6 d 以后,她有疲劳,恶心,呕吐,厌食,瘙痒和黄疸。她的实验室分析显示出丙氨酸 aminotransferase (中高音) , 1795 IU/L (正常范围 0-40 ) ;aspartate aminotransferase (著名计算机生产厂商) , 1337 IU/L (正常范围 5-34 ) ;硷性磷酸酯酶(高山) , 339 IU/L (正常范围 40-150 ) ;gamma-glutamyl transpeptidase (GGT ) , 148 IU/L (正常范围 9-64 IU/L ) ;全部的胆红素, 4.1 mg/dL;直接胆红素, 2.9 mg/dL 和前凝血酶时间(磅) , 13.5 s 与国际规范的比率(INR ) , 1.04。她被就医,与立即的药中止。她的肝活体检视标本显示出混合类型(肝细胞和胆汁郁积的) 肝的损害,与导致药的肝炎的诊断兼容。用 Naranjo 概率规模的一个客观诱发性评价建议 clindamycin 是尖锐肝炎的可能的原因。在易受影响的个人, clindamycin 使用可以导致尖锐混合类型肝毒性。如果在严重肝损伤被建立以前,这药被中止,完全的恢复可能是可能的。 | Cem Aygün Orhan Kocaman Yesim Gürbüz mer Sentürk Sadettin Hülagü | 2007 | World Journal of Gastroenterology2007，13，40： | 6 |
| 14 | Severe chest pain in a pediatric ulcerative colitis patient after 5-aminosalicylic acid therapy显示文摘Severe reactions to mesalamine products are rarely seen in pediatric patients. We report a case of a 12-year-old boy who had a severe cardiac reaction to a mesalamine product Asacol. Past medical history is significant for ulcerative colitis (UC) diagnosed at 9 years of age. Colo- noscopy one week prior to admission revealed pancoli- tis. He was treated with Asacol 800 mg three times per day and prednisone 20 mg/d. He was subsequently ad- mitted to the hospital for an exacerbation of his UC and started on intravenous solumedrol. He had improvement of his abdominal pain and diarrhea. The patient com- plained of new onset of chest pain upon initiating Asacol therapy. Electrocardiogram (ECG) revealed non-specific ST-T wave changes with T-wave inversion in the lateral leads. Echocardiogram (ECHO) revealed low-normal to mildly depressed left ventricular systolic function. The left main coronary artery and left anterior descending artery were mildly prominent measuring 5 mm and 4.7 mm, respectively. His chest pain completely resolved within 24-36 h of discontinuing Asacol. A repeat echo- cardiogram performed two days later revealed normal left ventricular function with normal coronary arteries (< 3.5 mm). Onset of chest pain after Asacol and im- mediate improvement of chest pain, as well as improve- ment of echocardiogram and ECG findings after discon- tinuing Asacol suggests that our patient suffered from a rare drug-hypersensitivity reaction to Asacol. | Orhan Atay Kadakkal Radhakrishnan Janine Arruda Robert Wyllie | 2008 | World Journal of Gastroenterology2008，14，27： | 6 |
| 15 | Decreased paraoxonase1 activity and increased malondialdehyde and oxidative DNA damage levels in primary open angle glaucoma显示文摘To investigate the malondialdehyde(MDA) levels,paraoxonase1(PON1) activity and 8-hydroxy 2-deoxyguanosine(8-OHd G) levels in the primary open angle glaucoma(POAG) patient.Blood samples from 52 healthy individuals and 53 patients with POAG were analyzed for MDA and 8-OHd G by high-performance liquid chromatography(HPLC) and PON1 by spectrophotometry.The data obtained were analyzed statistically.MDA levels were 10.46±8.4 and 4.70±1.79 μmol; PON1 levels were 121 ±39.55 and 161.62 ±60.22 U/m L; and 8-OHd G values were1.32 ±0.53/10~6 d G and 0.47 ±0.27/10~6 d G in the POAG patients and the control group,respectively.The difference was significant in MDA levels,8-OHd G levels and PON1 activity in POAG patients in comparison with controls(P <0.001).We concluded that the observed increase in MDA and 8-OHd G levels may be correlated with decreased PON1 activity.Oxidative stress plays an important role in glaucoma development. | Ugur Yilmaz Mumcu Ibrahim Kocer Orhan Ates H.Hakan Alp | 2016 | International Journal of Ophthalmology(English edition)2016，9，10： | 6 |
| 16 | Mechanical lithotripsy and/or stenting in management of difficult common bile duct stones显示文摘BACKGROUND:Mechanical lithotripsy and/or stent insertion is the alternative therapeutic approach in difficult endoscopic retrograde cholangiopancreatography (ERCP)case.This study was designed to investigate the appropriate treatment for extraction of bile duct stones in difficult cases of ERCP. METHODS:Between 2000 and 2008,744 ERCP procedures were performed in 592 patients with choledocholithiasis in our endoscopy unit.The demographic features,and clinical and laboratory findings were collected from a prospectively held database.Bile duct calculi were extracted by basket and/or balloon catheter following ERCP and sphincterotomy.Patients with retained stones were regarded as difficult cases.These patients were treated with mechanical lithotripsy and those with incomplete clearance of stones underwent stent placement. RESULTS:Two hundred and forty-five patients(41%) were male and 347(59%)were female with a mean age of 58 years(range 19-95 years).Stones were impacted in 27 patients(5%).Stone extraction was performed by basket and/or balloon catheter in 610 ERCP procedures,and lithotripsy was performed in 70 ERCP procedures.Forty- four patients underwent stent insertion,and 20 underwent stent replacement.Morbidity occurred in 39 patients (5%),with no mortality associated with the procedure.Hemorrhage occurred in 9 patients and basket impaction in 4.Mild pancreatitis and cholangitis developed in 12 and 11 patients,respectively. CONCLUSION:Difficult cases of bile duct stones can be treated successfully with lithotripsy,and a stent should be applied when the common bile duct cannot be cleared completely. | Adem Akcakaya Orhan Veli Ozkan Gurhan Bas Atilla Karakelleoglu Orhan Kocaman Ismail Okan Mustafa Sahin | 2009 | Hepatobiliary & Pancreatic Diseases International2009，8，5： | 5 |
| 17 | Antioxidants vitamin E and C attenuate hepatic fibrosis in biliary-obstructed rats显示文摘AIM: To investigate whether antioxidants vitamin E and C can retard development of hepatic fibrosis in the bili- ary-obstructed rats. METHODS: Fifty Wistar albino rats were randomly as- signed to 5 groups (10 rats in each). Bile duct was liga- ted in 40 rats and they were treated as follows: group vitC, vitamin C 10 mg/kg sc daily; group vitE, vitamin E 15 mg/kg sc daily; group vitEC, both of the vitamins; bile duct-ligated (BDL, control) group, physiological saline sc. The fifth group was assigned to sham operation. At the end of fourth week, the rats were decapitated, and hepatic tissue biochemical collagen content and collagen surface area were measured. Hepatic tissue specimens were histopathologically evaluated according to Scheuer system. Serum hyaluronate levels were measured by ELISA method. RESULTS: Despite being higher than sham group, he- patic collagen level was significantly decreased in each of the vitC, vitE and vitEC groups (32.7 ± 1.2, 33.8 ± 2.9, 36.7 ± 0.5 μg collagen/mg protein, respectively) compared to BDL (48.3 ± 0.6 mg collagen/g protein) (P < 0.001 for each vitamin group). Each isolated vitamin C, isolated vitamin E and combined vitamin E/C supp-lementation prevented the increase in hepatic collagen surface density (7.0% ± 1.1%, 6.2% ± 1.7%, 12.3% ± 2.0%, respectively) compared to BDL (17.4% ± 5.6%) (P < 0.05 for each). The same beneficial effect of vitamin C, vitamin E and combined vitamin E/C treatment was also observed on the decrease of serum hyaluronate levels compared to BDL group (P < 0.001). The relative liver and spleen weights, serum transaminases, cholestatic enzymes, bilirubins and histopathological inflammation scores were not different between the antioxidant treat- ment groups and the control. However, fibrosis staging scores were obviously reduced only in the vitamin E/C combination group (vit EC: 2.4 ± 0.8 vs BDL: 3.1 ± 0.7; P < 0.05). CONCLUSION: Each antioxidant vitamin E, vitamin C and their combination retard hepatic fibrosis in biliary-obs- tructed rats. Oxidative stress may play a role in the patho- genesis of hepatic fibrosis in secondary biliary cirrhosis. | Ali Riza Soylu Nurettin Aydogdu Umit Nusret Basaran Semsi Altaner Orhan Tarcin Nursal Gedik Hasan Umit Ahmet Tezel Gulbin Dokmeci Huseyin Baloglu Mevlut Ture Kemal Kutlu Kadir Kaymak | 2006 | World Journal of Gastroenterology2006，12，42： | 4 |
| 18 | Lamivudine resistance mutations in patients infected with hepatitis B virus genotype D显示文摘AIM: To determine the distribution of viral genotypes for primary or acquired lamivudine resistance. METHODS: A total of 283 patients with chronic hepatitis B virus (HBV) infection (245 patients with chronic hepatitis B and 38 inactive hepatitis B surface antigen carriers) were included in the study. The HBV geno-type was determined by using quantitative real-time polymerase chain reaction and sequence analysis, and tyrosine-methionine-aspartate-aspartate (YMDD) motif mutations were determined using the reverse transcriptase hybridization method. RESULTS: Lamivudine resistance was determined in a total of 25 (10.7%) chronic hepatitis B patients. Eight subjects (4%) had primary resistance to lamivudine, and 17 (53.1%) had secondary resistance to lamivudine. Genotype D, which was isolated from 267 of the patients with chronic HBV infection, was the dominant genotype in Turkey. CONCLUSION: Identification of YMDD motif mutations should have a positive impact on the selection of proper antiviral medication for patients, even for those who are nucleoside nave. | Orhan Yιldιz Bilgehan Aygen Nese Demirtürk Tuna Demirdal Dilara Inan Taner Yιldιrmak Arzu Kantürk Ediz Tütüncü Hepatitis B Study Group | 2011 | World Journal of Gastroenterology2011，17，45： | 3 |
| 19 | Clinical and impression cytology findings of amniotic membrane and oral mucosal membrane transplantation for the management of socket contracture显示文摘AIM:To investigate and compare the cytopathological and clinical effects of amniotic membrane transplantation(AMT)and oral mucosal membrane transplantation(OMMT)in socket contraction.METHODS:Twelve patients who could not be fitted with ocular prosthesis due to socket contracture were included in this study.Seven patients underwent AMT and 5 patients underwent OMMT.Thirteen patients who had healthy sockets were included as control group.Depth of inferior fornix,degree of inflammation,extent of the socket contracture and socket volume were measured in the preoperative period and at sixth and twelfth weeks postoperatively.Impression cytology of conjunctival fornices and tear transforming growth factor beta-1(TGFβ1)levels were determined.RESULTS:In the AMT group,socket volume and lower fornix depth values were significantly higher(P=0.030and P=0.004 respectively)and inflammation levels and impression cytology stages(P=0.037 and P=0.022respectively)were significantly lower in postoperative period compared to preoperative period.In the OMMT group,no statistical differences were found in terms of clinical parameters,inflammation levels and impression cytology stages of preoperative versus postoperative values.Preoperative tear TGFβ1 levels were higher in AMT and OMMT groups compared to the control group(25.5 ng/mL,26.3 ng/mL and 21.7 ng/mL respectively).Decreased tear TGFβ1 levels were observed in both the AMT and OMMT groups postoperatively(median decrease value=2.1 ng/mL and 2.7 ng/mL respectively).CONCLUSION:AMT is associated with postoperative improvement in inferior fornix depth,socket volume,inflammation and impression cytology levels and may bea more proper alternative method than OMMT in the management of socket contracture. | Bengi Ece Kurtul Ugur Erdener Mehmet Cem Mocan Murat Irkec Mehmet Orhan | 2014 | International Journal of Ophthalmology(English edition)2014，7，2： | 3 |
| 20 | Photoselective Potassium Titanyl Phosphate (KTP) Laser Vaporization Versus Transurethral Resection of the Prostate for Prostates Larger Than 70 mL: A Short-Term Prospective Randomized Trial显示文摘 | Kaya Horasanli Mesrur Selcuk Silay Bulent Altay Orhan Tanriverdi Kemal Sarica Cengiz Miroglu | 2008 | Urology2008，，2： | 3 |
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