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| 1 | Inflammatory pathways of importance for management of inflammatory bowel disease显示文摘Inflammatory bowel disease(IBD)is a group of chronic disorders of the gastrointestinal tract comprising Crohn’s disease(CD)and ulcerative colitis(UC).Their etiologies are unknown,but they are characterised by an imbalanced production of pro-inflammatory mediators,e.g.,tumor necrosis factor(TNF)-α,as well as increased recruitment of leukocytes to the site of inflammation.Advantages in understanding the role of the inflammatory pathways in IBD and an inadequate response to conventional therapy in a large portion of patients,has over the last two decades lead to new therapies which includes the TNF inhibitors(TNFi),designed to target and neutralise the effect of TNF-α.TNFi have shown to be efficient in treating moderate to severe CD and UC.However,convenient alternative therapeutics targeting other immune pathways are needed for patients with IBD refractory to conventional therapy including TNFi.Indeed,several therapeutics are currently under development,and have shown success in clinical trials.These include antibodies targeting and neutralising interleukin-12/23,small pharmacologic Janus kinase inhibitors designed to block intracellular signaling of several pro-inflammatory cytokines,antibodies targeting integrins,and small anti-adhesion molecules that block adhesion between leukocytes and the intestinal vascular endothelium,reducing their infiltration into the inflamed mucosa.In this review we have elucidated the major signaling pathways of clinical importance for IBD therapy and highlighted the new promising therapies available.As stated in this paper several new treatment options are under development for the treatment of CD and UC,however,no drug fits all patients.Hence,optimisations of treatment regimens are warranted for the benefit of the patients either through biomarker establishment or other rationales to maximise the effect of the broad range of mode-of-actions of the present and future drugs in IBD. | Jannie Pedersen Mehmet Coskun Christoffer Soendergaard Mohammad Salem Ole Haagen Nielsen | 2014 | World Journal of Gastroenterology2014，20，1： | 28 |
| 2 | miR-20b, miR-98, miR-125b-1*, and let-7e* as new potential diagnostic biomarkers in ulcerative colitis显示文摘AIM:To use microarray-based miRNA profiling of colonic mucosal biopsies from patients with ulcerative colitis (UC), Crohn's disease (CD), and controls in order to identify new potential miRNA biomarkers in inflammatory bowel disease. METHODS:Colonic mucosal pinch biopsies from the descending part were obtained endoscopically from patients with active UC or CD, quiescent UC or CD, as well as healthy controls. Total RNA was isolated and miRNA expression assessed using the miRNA microarray Geniom Biochip miRNA Homo sapiens (Febit GmbH, Heidelberg, Germany). Data analysis was carried out by principal component analysis and projection to latent structure-discriminant analysis using the SIMCA-P+12 software package (Umetrics, Umea, Sweden). The microarray data were subsequently validated by quantitative real-time polymerase chain reaction (qPCR) performed on colonic tissue samples from active UC patients (n = 20), patients with quiescent UC (n = 19), and healthy controls (n = 20). The qPCR results were analyzed with Mann-WhitneyU test.In silico prediction analysis were performed to identify potential miRNA target genes and the predicted miRNA targets were then compared with all UC associated susceptibility genes reported in the literature. RESULTS:The colonic mucosal miRNA transcriptome differs significantly between UC and controls, UC and CD, as well as between UC patients with mucosal inflammation and those without. However, no clear differences in the transcriptome of patients with CD and controls were found. The miRNAs with the strongest differential power were identified (miR-20b, miR-99a, miR-203, miR-26b, and miR-98) and found to be upregulated more than a 10-fold in active UC as compared to quiescent UC, CD, and controls. Two miRNAs, miR-125b-1* and let-7e*, were up-regulated more than 5-fold in quiescent UC compared to active UC, CD, and controls. Four of the seven miRNAs (miR-20b, miR-98, miR-125b-1*, and let-7e*) were validated by qPCR and found to be specifically upregulated in patients with UC. Usingin silico analysis we found several predicted pro-inflammatory target genes involved in various pathways, such as mitogen-activated protein kinase and cytokine signaling, which are both key signaling pathways in UC.CONCLUSION:The present study provides the first evidence that miR-20b, miR-98, miR-125b-1*, and let7e* are deregulated in patients with UC. The level of these miRNAs may serve as new potential biomarkers for this chronic disease. | Mehmet Coskun Jacob Tveiten Bjerrum Jakob Benedict Seidelin Jesper Thorvald Troelsen JΦrgen Olsen Ole Haagen Nielsen | 2013 | World Journal of Gastroenterology2013，19，27： | 19 |
| 3 | MicroRNAs in inflammatory bowel disease-pathogenesis,diagnostics and therapeutics显示文摘The pathogenesis of inflammatory bowel disease (IBD) is complex and largely unknown. Until recently, research has focused on the study of protein regulators in inflammation to reveal the cellular and molecular networks in the pathogenesis of IBD. However, in the last few years, new and promising insights have been generated from studies describing an association between an altered expression of a specific class of non-coding RNAs, called microRNAs (miRs or miRNAs) and IBD. The short (approximately 22 nucleotides), endogenous, single-stranded RNAs are evolutionary conserved inanimals and plants, and regulate specific target mRNAs at the post-transcriptional level. MiRNAs are involved in several biological processes, including development, cell differentiation, proliferation and apoptosis. Furthermore, it is estimated that miRNAs may be responsible for regulating the expression of nearly one-third of the genes in the human genome. Thus, miRNA deregulation often results in an impaired cellular function, and a disturbance of downstream gene regulation and signaling cascades, suggesting their implication in disease etiology. Despite the identification of more than 1900 mature human miRNAs, very little is known about their biological functions and functional targets. Recent studies have identified dysregulated miRNAs in tissue samples of IBD patients and have demonstrated similar differences in circulating miRNAs in the serum of IBD patients. Thus, there is great promise that miRNAs will aid in the early diagnosis of IBD, and in the development of personalized therapies. Here, we provide a short review of the current state-of-the-art of miRNAs in IBD pathogenesis, diagnostics and therapeutics. | Mehmet Coskun Jacob Tveiten Bjerrum Jakob Benedict Seidelin Ole Haagen Nielsen | 2012 | World Journal of Gastroenterology2012，18，34： | 18 |
| 4 | Internal biliary fistula due to cholelithiasis:A single-centre experience显示文摘AIM: To discuss about the perioperative problems encountered in patients with internal biliary fistula (IBF) caused by cholelithiasis. METHODS: In our hospital, 4 130 cholecystectomies were carried out for symptomatic cholelithiasis from January 2000 to March 2004 and only 12 patients were diagnosed with IBF. The perioperative data of these 12 IBF patients were analyzed retrospectively. RESULTS: The incidence of IBF due to cholelithiasis was nearly 0.3%. The mean age was 57 years. Most of the patients presented with non-specific complaints. Only two patients were considered to have IBF when gallstone ileus was observed during the investigations. Nine patients underwent emergency laparotomy with a pre-operative diagnosis of acute abdomen. In the remaining three patients, elective laparoscopic cholecystectomy was converted to open surgery after identification of IBF. Ten patients had cholecystoduodenal fistula and two patients had cholecystocholedochal fistula. The mean hospital stay was 13 d. Two wound infections, three bile leakages and three mortalities were observed. CONCLUSION: Cholecystectomy has to be performed in early stage in the patients who were diagnosed as cholelithiasis to prevent the complications like IBF which is seen rarely. Suspicion of IBF should be kept in mind, especially in the case of difficult dissection during cholecystectomy and attention should be paid in order to prevent iatrogenic injuries. | Arife Polat Duzgun Mehmet Mahir Ozmen Mehmet Vasfi Ozer Faruk Coskun | 2007 | World Journal of Gastroenterology2007，13，34： | 15 |
| 5 | Protective effects of intravenous anesthetics on kidney tissue in obstructive jaundice显示文摘AIM:To evaluate the protective effects on kidney tissue of frequently used intravenous anesthetics(ketamine,propofol,thiopental,and fentanyl)in rats with obstructive jaundice.METHODS:There is an increased incidence of postoperative acute renal failure in patients with obstructive jaundice.Thirty-two Wistar-albino rats were randomly divided into four equal groups.Laparatomy was performed on each animal in the four groups and common bile ducts were ligated and severed on day 0.After 7 d,laparotomy was again performed using ketamine,propofol,thiopental,or fentanyl anesthesia whose antioxidative properties are well known in oxidative stress in a rat liver model of obstructive jaundice.After 2 h,the rats were sacrificed.Renal tissue specimens were analyzed for catalase,superoxide dismutase and malondialdehyde enzymes activities.All values are expressed as the mean±SD.P values less than 0.05 were considered statistically significant.RESULTS:All animals survived without complications until the end of the study.Enlargement in the bile duct and obstructive jaundice were observed in all rats.Catalase was found to be significantly lower in the fentanyl group than in the ketamine(P=0.039),propofol(P=0.012),and thiopental(P=0.001)groups.Superoxide dismutase activities were similar in all groups(P>0.05).Malondialdehyde was found to be significantly lower in the ketamine group than in the propofol(P=0.028),thiopental(P=0.002)and fentanyl(P=0.005)groups.Malondialdehyde was also lower in the fentanyl group than in the thiopental group(P=0.001).The results showed that obstructive jaundice sensitizes renal tissue to damage under the different anesthetics.CONCLUSION:Among the agents tested,ketamine and propofol generated the least amount of oxidative stres on renal tissues in this rat model of obstructive jaundice created by common bile duct ligation.The importance of free radical injury in renal tissue in obstructive jaundice under different intravenous anesthetics during hepatobiliary and liver transplant surgery should be considered for prevention of postoperative acute renal failure. | Sinan Hatipoglu Huseyin Yildiz Ertan Bulbuloglu Ismail Coskuner Ergul Belge Kurutas Filiz Hatipoglu Harun Ciralik Mehmet Sait Berhuni | 2014 | World Journal of Gastroenterology2014，20，12： | 9 |
| 6 | Hepatoprotective effects of Nigella sativa L and Urtica dioica L on lipid peroxidation, antioxidant enzyme systems and liver enzymes in carbon tetrachloride-treated rats显示文摘AIM: To investigate the effects of Nigella sativa L (NS)and Urtica dioica L (UD) on lipid peroxidation, antioxidant enzyme systems and liver enzymes in CCl4-treated rats.METHODS: Fifty-six healthy male Wistar albino rats were used in this study. The rats were randomly allotted into one of the four experimental groups: A (CCl4-only treated), B (CCl4+UD treated), C (CCl4+NS treated) and D (CCl4+UD+NS treated), each containing 14 animals.All groups received CCl4 (0.8 mL/kg of body weight, sc,twice a week for 60 d). Tn addition, B, C and D groups also received daily J.p. injections of 0.2 mL/kg NS or/and 2 mL/kg UD oils for 60 d. Group A, on the other hand,received only 2 mL/kg normal saline solution for 60 d.Blood samples for the biochemical analysis were taken by cardiac puncture from randomly chosen-seven rats in each treatment group at beginning and on the 60th d of the experiment.RESULTS: The CCl4 treatment for 60 d increased thelipid peroxidation and liver enzymes,and also decreasedthe antioxidant enzyme levels. NS or UD treatment (aloneor combination) for 60 d decreased the elevated lipidperoxidation and liver enzyme levels and also increasedthe reduced antioxidant enzyme levels.The weight ofrats decreased in group A,and increased in groups B, Cand D.CONCLUSION: NS and UD decrease the lipid peroxidation and liver enzymes, and increase the antioxidant defense system activity in the CCl4-treated rats. | Mehmet Kanter Omer Coskun Mustafa Budancamanak | 2005 | World Journal of Gastroenterology2005，11，42： | 9 |
| 7 | Involvement of JAK/STAT signaling in the pathogenesis of inflammatory bowel disease显示文摘 | Mehmet Coskun Mohammad Salem Jannie Pedersen Ole Haagen Nielsen | 2013 | Pharmacological Research2013，，： | 3 |
| 8 | Can fruit seeds and undigested plant residuals cause acute appendicitis显示文摘Objective:To investigate the relation between fruit seeds,plants residuals and appendicitis. Methods:Among cases that underwent appendectomy,the appendicitis cases having fruit seeds and undigested plant residuals in their etiology were examined retrospectively.Also, histopathological features,age,sex,and parameters of morbidity and mortality were used. Results:Fruit seed was found in one case(0.05%) with presence of pus in appendix lumen, undigested plant residuals in 7 cases(0.35%).It was determined that there were appendix inflammation in 2 of the plant residuals cases,while there were obstruction and lymphoid hyperplasia in the appendix lumen of 5 cases.No mortality was observed.Conclusions:The ratio of acute appendicitis caused by plants is minimal among all appendectomised patients, but avoidence of eating undigested fruit seeds and chewing plants well may help to prevent appendicitis. | Omer Engin Mehmet Yildirim Savas Yakan Gulnihal Ay Coskun | 2011 | Asian Pacific Journal of Tropical Biomedicine2011，1，2： | 2 |
| 9 | Open reduction of a total talar dislocation: A case report and review of the literature显示文摘BACKGROUND Total talar dislocation (TTD) is very uncommon for many orthopedic surgeons and emergency/trauma specialists. Scarce cases of TTD have been reported, mainly in the form of open fracture-dislocation injury. CASE SUMMARY We report a very rare injury of closed TTD with a follow-up period of 36 mo. Initial closed reduction was not successful because of a fractured highly unstable medial malleolus displaced into the ankle mortise, blocking the relocation of the talus. The patient was able to walk pain-free after the 3rd month of surgery. At the 36-mo follow-up, there were 10 degrees of flexion loss and 10 degrees of extension loss in the tibiotalar joint. Furthermore, 5 degrees of subtalar joint inversion-eversion loss was present. CONCLUSION Open reduction should be performed for closed TTDs unless closed reduction is successful. | Furkan Yapici Mehmet Coskun Muhammet Coskun Arslan Erman Ulu Yunus Emre Akman | 2019 | World Journal of Clinical Cases2019，7，14： | 2 |
| 10 | Transcriptional profiling of granulosa cells from a patient with recurrent empty follicle syndrome显示文摘 | Mehmet Sait Inan Saad Al-Hassan Pinar Ozand Serdar Coskun | 2006 | Reproductive BioMedicine Online2006，，： | 2 |
| 11 | Mucosal Healing in Ulcerative Colitis显示文摘 | Jakob Benedict Seidelin Mehmet Coskun Ole Haagen Nielsen | 2013 | Advances in Clinical Chemistry2013，，： | 2 |
| 12 | Establishing ecological networks for habitat conservation in the case of CeAYme-Urla Peninsula,Turkey显示文摘 | Cigdem Coskun Hepcan Mehmet Bülent?zkan | | 0，，1： | 1 |
| 13 | Aggressive angiomyxoma of vulva recurring 8 years after initial diagnosis显示文摘 | Mehmet Coskun Salman Gamze Moean Kuzey | 2009 | Arch Gyne-col Obstet2009，280，： | 1 |
| 14 | Spiral computed tomography:role in etermination of chemical compositions of pure and mixed urinary stones-an invitro study显示文摘 | Serkan Deveci Mehmet Coskun | 2004 | The Journal of Urology2004，64，2： | 1 |
| 15 | The Effect of Helicobacter pylori on Insulin Resistance显示文摘 | Selim Aydemir MD Taner Bayraktaroglu MD Mehmet Sert MD Coskun Sokmen MD Hulusi Atmaca MD Gorkem Mungan MD Banu Dogan Gun MD Ali Borazan MD Yucel Ustundag MD | 2005 | Digestive Diseases and Sciences2005，，11： | 1 |
| 16 | The Effect of Helicobacter pylori on Insulin Resistance显示文摘 | Selim Aydemir MD Taner Bayraktaroglu MD Mehmet Sert MD Coskun Sokmen MD Hulusi Atmaca MD Gorkem Mungan MD Banu Dogan Gun MD Ali Borazan MD Yucel Ustundag MD | 2005 | Digestive Diseases and Sciences2005，，11： | 1 |
| 17 | Inhibitors of apoptosis (IAPs) regulate intestinal immunity and inflammatory bowel disease (IBD) inflammation显示文摘 | Jannie Pedersen Eric C. LaCasse Jakob B. Seidelin Mehmet Coskun Ole H. Nielsen | 2014 | Trends in Molecular Medicine2014，，11： | 1 |
| 18 | Involvement of JAK/STAT signaling in the pathogenesis of inflammatory bowel disease显示文摘 | Mehmet Coskun Mohammad Salem Jannie Pedersen Ole Haagen Nielsen | 2013 | Pharmacological Research2013，，： | 1 |
| 19 | Exhaled RANTES and interleukin 4 levels after exercise challenge in children with asthma显示文摘 | Ozlem Keskin Mehmet Keskin Ercan Kucukosmanoglu Mehmet Yasar Ozkars Bulent Gogebakan Seval Kul Hasan Bayram Yavuz Coskun | 2012 | Annals of Allergy, Asthma & Immunology2012，，： | 1 |
| 20 | The Effect of Helicobacter pylori on Insulin Resistance显示文摘 | Selim Aydemir MD Taner Bayraktaroglu MD Mehmet Sert MD Coskun Sokmen MD Hulusi Atmaca MD Gorkem Mungan MD Banu Dogan Gun MD Ali Borazan MD Yucel Ustundag MD | 2005 | Digestive Diseases and Sciences2005，，11： | 1 |
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