|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Probiotics in hepatology显示文摘The paper provides a basic review of intestinal micro- flora and its importance in liver diseases. The intestinal microflora has many important functions, above all to maintain the microbial barrier against established as well as potential pathogens. Furthermore, it influences the motility and perfusion of the intestinal wall, stimu- lates the intestinal immune system and therefore also the so-called common mucosal immune system, re- ducing bacterial translocation and producing vitamins. Immune homeostasis at mucosal level results from a controlled response to intestinal luminal antigens. In liver cirrhosis, there are many changes in its function, mostly an increase in bacterial overgrowth and trans- location. In this review, probiotics and their indications in hepatology are generally discussed. According to recent knowledge, these preparations are indicated in clinical practice only for cases of hepatic encephalopa- thy. Probiotics are able to decrease the permeability ofthe intestinal wall, and decrease bacterial translocation and endotoxemia in animal models as well as in clinical studies, which is extremely important in the prevention of complications of liver cirrhosis and infection after liv- er transplantation. Probiotics could limit oxidative and inflammatory liver damage and, in some situations, improve the histological state, and thus non-alcoholic steatohepatitis could be considered as another possible indication. ? 2011 Baishideng. All rights reserved. | Jan Lata Jana Jurankova Marcela Kopacova Petr Vitek | 2011 | World Journal of Gastroenterology2011，17，24： | 19 |
| 2 | Heavy rockbursts due to longwall mining near protective pillars:A case study显示文摘Rockburst represents a very dangerous phenomenon in deep underground mining in unfavourable conditions such as great depth, high horizontal stress, proximity of important tectonic structures, and unmined pillars. The case study describes a recorded heavy rockburst in the Czech part of the Upper Silesian Coal Basin, which occurred during longwall mining near the protective pillar. The artificial dividing of geological blocks and creation of mining protective pillars(shaft pillars, crosscut pillars etc.) is a dangerous task in light of rockbursts occurring mainly due to overstressing of remaining pillars. A simple model of this situation is presented. Natural and mining conditions are analysed and presented in detail as well as registered seismicity during longwall mining in the area. Recorded rockbursts in the area of interest are described and their causes discussed. Many rockbursts near protective pillars were recorded in this mining region. Methodical instructions for rockburst prevention in proximity of protective pillars as well as for gates driving were devised based on the evaluation of rockburst causes. The paper presents these principles for prevention. | Petr Konicek Jan Schreiber | 2018 | International Journal of Mining Science and Technology2018，28，5： | 9 |
| 3 | Helicobacter pylori infection and other bacteria in pancreatic cancer and autoimmune pancreatitis显示文摘Helicobacter pylori(H.pylori)is an infectious agent influencing as much as 50%of the world’s population.It is the causative agent for several diseases,most especially gastric and duodenal peptic ulcer,gastric adenocarcinoma and mucosaassociated lymphoid tissue lymphoma of the stomach.A number of other,extragastric manifestations also are associated with H.pylori infection.These include neurological disorders,such as Alzheimer’s disease,demyelinating multiple sclerosis and Parkinson’s disease.There is also evidence for a relationship between H.pylori infection and such dermatological diseases as psoriasis and rosacea as well as a connection with infection and open-angle glaucoma.Generally little is known about the relationship between H.pylori infection and diseases of the pancreas.Most evidence about H.pylori and its potential role in the development of pancreatic diseases concerns pancreatic adenocarcinoma and autoimmune forms of chronic pancreatitis.There is data(albeit not fully consistent)indicating modestly increased pancreatic cancer risk in H.pylori-positive patients.The pathogenetic mechanism of this increase is not yet fully elucidated,but several theories have been proposed.Reduction of antral Dcells in H.pylori-positive patients causes a suppression of somatostatin secretion that,in turn,stimulates increased secretin secretion.That stimulates pancreatic growth and thus increases the risk of carcinogenesis.Alternatively,H.pylori,as a part of microbiome dysbiosis and the so-called oncobiome,is proven to be associated with pancreatic adenocarcinoma development via the promotion of cellular proliferation.The role of H.pylori in the inflammation characteristic of autoimmune pancreatitis seems to be explained by a mechanism of molecular mimicry among several proteins(mostly enzymes)of H.pylori and pancreatic tissue.Patients with autoimmune pancreatitis often show positivity for antibodies against H.pylori proteins.H.pylori,as a part of microbiome dysbiosis,also is viewed as a potential trigger of autoimmune inflammation of the pancreas.It is precisely these relationships(and associated equivocal conclusions)that constitute a center of attention among pancreatologists,immunologists and pathologists.In order to obtain clear and valid results,more studies on sufficiently large cohorts of patients are needed.The topic is itself sufficiently significant to draw the interest of clinicians and inspire further systematic research.Next-generation sequencing could play an important role in investigating the microbiome as a potential diagnostic and prognostic biomarker for pancreatic cancer. | Lumir Kunovsky Petr Dite Petr Jabandziev Jiri Dolina Jitka Vaculova Martin Blaho Martina Bojkova Jana Dvorackova Magdalena Uvirova Zdenek Kala Jan Trna | 2021 | World Journal of Gastrointestinal Oncology2021，13，8： | 5 |
| 4 | Laparoscopic approach to retrorectal cyst显示文摘Retrorectal cysts are rare benign lesions in the presacral space which are frequently diagnosed in middle-aged females. We report here our experience with two symptomatic female patients who were diagnosed as having a retrorectal cyst and managed using a laparoscopic approach. The two patients were misdiagnosed as having an ovarian cystic lesion after abdominal ultrasonography. Computer tomograghy (CT) scan was mandatory to establish the diagnosis. The trocar port site was the same in both patients. An additional left oophorectomy was done for a coexisting ovarian cystic lesion in one patient in the same setting. There was no postoperative morbidity or mortality and the two patients were discharged on the 5th and 6th post operative days, respectively. Our cases show that laparoscopic management of retrorectal cysts is a safe approach. It reduces surgical trauma and offers an excellent tool for perfect visualization of the deep structures in the presacral space. | Petra Gunkova Lubomir Martinek Jan Dostalik Igor Gunka Petr Vavra Miloslav Mazur | 2008 | World Journal of Gastroenterology2008，14，42： | 4 |
| 5 | Epigenetic and non-epigenetic mode of SIRT1 action during oocyte meiosis progression显示文摘Background: SIRT1 histone deacetylase acts on many epigenetic and non-epigenetic targets. It is thought that SIRT1 is involved in oocyte maturation;therefore, the importance of the ooplasmic SIRT1 pool for the further fate of mature oocytes has been strongly suggested. We hypothesised that SIRT1 plays the role of a signalling molecule in mature oocytes through selected epigenetic and non-epigenetic regulation.Results: We observed SIRT1 re-localisation in mature oocytes and its association with spindle microtubules.In mature oocytes, SIRT1 distribution shows a spindle-like pattern, and spindle-specific SIRT1 action decreasesα-tubulin acetylation. Based on the observation of the histone code in immature and mature oocytes, we suggest that SIRT1 is mostly predestined for an epigenetic mode of action in the germinal vesicles(GVs) of immature oocytes. Accordingly, BML-278-driven trimethylation of lysine K9 in histone H3 in mature oocytes is considered to be a result of GV epigenetic transformation.Conclusions: Taken together, our observations point out the dual spatiotemporal SIRT1 action in oocytes,which can be readily switched from the epigenetic to non-epigenetic mode of action depending on the progress of meiosis. | Jan Nevoral Lukas Landsmann Miriam Stiavnicka Petr Hosek Jiri Moravec Sarka Prokesova Hedvika Rimnacova Eliska Koutna Pavel Klein Kristyna Hoskova Tereza Zalmanova Tereza Fenclova Jaroslav Petr Milena Kralickova | 2019 | Journal of Animal Science and Biotechnology2019，10，4： | 3 |
| 6 | Single balloon enteroscopy for endoscopic retrograde cholangiography in patients with Roux-en-Y hepaticojejuno anastomosis显示文摘AIM:To evaluate single balloon enteroscopy in diagnostic and therapeutic endoscopic retrograde cholangiography(ERC)in patients with Roux-en-Y hepaticojejunoanastomosis(HJA).METHODS:The study took place from January 2009to December 2011 and we retrospectively assessed 15patients with Roux-en-Y HJA who had signs of biliary obstruction.In total,23 ERC procedures were performed in these patients and a single balloon videoen-teroscope(Olympus SIF Q 180)was used in all of the cases.A transparent overtube was drawn over the videoenteroscope and it freely moved on the working part of the enteroscope.Its distal end was equipped with a silicone balloon that was inflated by air from an external pump at a pressure of≤5.4 kPa.The technical limitations or rather the parameters of the single balloon enteroscope(working length-200 cm,diameter of the working channel-2.8 mm,absence of Albarran bridge)showed the need for special endoscopic instrumentation.RESULTS:Cannulation success was reached in diagnostic ERC in 12 of 15 patients.ERC findings were normal in 1 of 12 patients.ERC in the remaining 11 patients showed some pathological changes.One of these(cystic bile duct dilation)was subsequently resolved surgically.Endoscopic treatment was initialized in the remaining 10 patients(5 with HJA stenosis,2 with choledocholithiasis,and 3 with both).This treatment was successful in 9 of 10 patients.The endoscopic therapeutic procedures included:balloon dilatation of HJA stenosis-11 times(7 patients);choledocholitiasis extraction-five times(5 patients);biliary plastic stent placement-six times(4 patients);and removal of biliary stents placed by us-six times(4 patients).The mean time of performing a single ERC was 72 min.The longest procedure took 110 min and the shortest took34 min.This shows that it is necessary to allow for more time in individual procedures.Furthermore,these procedures require the presence of an anesthesiologist.We did not observe any complications in these 15 patients.CONCLUSION:This method is more demanding than standard endoscopic retrograde cholangiopancreatography due to altered postsurgical anatomy.However,it is effective,safe,and widens the possibilities of resolving biliary pathology. | Bohuslav Kianika Jan Lata Ivo Novotny Petr Dítě Jirí Vaníek | 2013 | World Journal of Gastroenterology2013，19，44： | 2 |
| 7 | Epithelial markers of colorectal carcinogenesis in ulcerative colitis and primary sclerosing cholangitis显示文摘AIM:To evaluate the expression of epithelial markers of colorectal carcinogenesis in patients with long-term ulcerative colitis(UC) and primary sclerosing cholangitis(PSC) before and after transplantation.METHODS:Eight patients with UC and PSC prior to liver transplantation(PSC-UC),22 patients with UC after liver transplantation for PSC(OLT),9 patients with active ulcerative colitis without PSC(UCA),7 patients withUC in remission(UCR) and 10 controls(N) underwent colonoscopy with multiple biopsies.Specimens were analysed histologically and semi-quantitatively immunohistochemically for p53,Bcl-2 and cyclooxygenase-2(COX-2) markers.Statistical analysis was performed by Kruskal-Wallis and Fisher's exact tests.RESULTS:PSC-UC had a statistically significantly higher expression of p53 in the nondysplastic mucosa as compared to OLT,UCA,UCR and N(P < 0.05).We also found a statistically significant positive correlation between the incidence of PSC and the expression of p53(P < 0.001).UCA had a higher p53 expression as compared to UCR.OLT had a significantly lower expression of p53 as compared with PSC-UC(P < 0.001).Bcl-2 had a significant higher bcl-2 expression as compared with controls.No difference in COX-2 expression between PSC-UC,UCR and UCA was found.UCA had higher COX-2 expression as compared to UCR.We also found a statistically significant positive correlation between the expression of COX-2 and p53.Patients after liver transplantation for PSC had a statistically significantly lower expression of the p53 compared with PSCUC(P < 0.001).PSC-UC had the same inflammatory endoscopic activity as OLT and UCR when evaluated with the Mayo score.CONCLUSION:Our study shows that the nondysplatic mucosa of UC patients with PSC is characterised by a higher expression of the tumour suppressor gene p53,suggesting a higher susceptibility of cancer.This p53 overexpression correlates with the presence of PSC whilst it is not present in patients with UC after liver transplantation for PSC. | Pavel Wohl Tomas Hucl Pavel Drastich David Kamenar Julius Spicak Eva Honsova Eva Sticova Alena Lodererova Jan Matous Martin Hill Petr Wohl Milos Kucera | 2013 | World Journal of Gastroenterology2013，19，14： | 2 |
| 8 | Ballistic Testing and Thermal Behavior of Cast Double-base Propellant Containing BuNENA显示文摘Preparation of cast double-propellant grains depends on the ability of nitrocellulose powder to swell and coalesce into a coherent mass when treated with a suitable solvent.The cast double-base process has been developed into a highly versatile technique for manufacturing solid rocket charges.Propellants manufactured by this process provide a wide range of energies and burning rates.Successful preparation of cast double-base propellant grains has been performed using compatible casting liquid with the casting powder.BuNENA was used as an energetic plasticizer for manufacturing of casting powder.Burning rate measurements have been performed using closed bomb SV-2to investigate the burning behavior along a wide range of operating pressure.Plateau burning had been detected in pressure range(50-70)×105 Pa for the composition included BuNENA.DTA and TGA thermal analysis were conducted to evaluate the thermal behavior of the prepared cast double-base propellants.Results from DTA were used to calculate the apparent activation energy. | Ahmed Maraden Petr Stojan Robert Matyas Jan Zigmund | 2017 | 火炸药学报2017，40，6： | 2 |
| 9 | Electrical Reconnection After Pulmonary Vein Isolation Is Contingent on Contact Force During Initial Treatment: Results From the EFFICAS I Study显示文摘 | Petr Neuzil Vivek Y. Reddy Josef Kautzner Jan Petru Dan Wichterle Dipen Shah Hendrik Lambert Aude Yulzari Erik Wissner Karl-Heinz Kuck | 2013 | Circulation: Arrhythmia and Electrophysiology2013，，： | 1 |
| 10 | Role of orthoptics and scoring system for orbital floor blowout fracture:surgical or conservative treatment显示文摘AIM:To assess the role of orthoptics in referring patients with orbital floor blowout fracture(OFBF)for conservative or surgical treatment and based on the results,to propose a scoring system for such decision making.METHODS:A retrospective analysis of 69 patients with OFBF was performed(35 treated conservatively,34 surgically).The role of orthoptics in referring to surgery or conservative treatment was retrospectively evaluated,the factors with the highest significance for decision making were identified,and a scoring system proposed using Logistic regression.RESULTS:According to defined criteria,the treatment was unsuccessful in 2(6%)surgically treated and only in one(3%)conservatively treated patient.The proposed scoring system includes the defect size and several values resulting from the orthoptic examination,the elevation of the eyebulb measured on Lancaster screen being the most significant.CONCLUSION:The study demonstrates the benefits of orthoptic examination when making decisions on conservative or surgical treatment and for diagnosing ocular motility disorder(with or without binocular diplopia)in OFBF patients.The proposed scoring system could,following verification in a prospective study,become a valuable adjunctive tool. | Juraj Timkovic Jiri Stransky Katerina Janurova Petr Handlos Jan Stembirek | 2021 | International Journal of Ophthalmology(English edition)2021，14，12： | 1 |
| 11 | On the limits of applicability of spectrophotometer and spectrofluorime tricmethods for the determination of chlorophyll alb ratio 显示文摘 | ROMAN K PETR I JAN N | 1999 | Photo synth Res1999，，62： | 1 |
| 12 | Influence of the Secondary Deployment of Expanded Polytetrafluoroethylene–covered Stent Grafts on Maintenance of Transjugular Intrahepatic Portosystemic Shunt Patency显示文摘 | Vaclav Jirkovsky Tomas Fejfar Vaclav Safka Petr Hulek Antonin Krajina Vendelin Chovanec Jan Raupach Miroslav Lojik Tomas Vanasek Ondrej Renc Shahzad M. Ali | 2011 | Journal of Vascular and Interventional Radiology2011，，1： | 1 |
| 13 | Role of zearalenone lactonase in p rotection ofgliocladium roseum from fungitoxic effects of the mycotoxinzearalenone显示文摘 | Jan U Petr K | 2007 | Applied and Enviromnental Microbiology2007，73，2： | 1 |
| 14 | Variceal bleeding in portal hypertension: bacterial infection and comparison of efficacy of intravenous and per-oral application of antibiotics – a randomized trial显示文摘 | Jan Lata Jana Juránková Libu?e Husová Michal ?enky?ík Petr Dítě Milan Dastych Veronika P?íbramská Radek Kroupa | 2005 | European Journal of Gastroenterology & Hepatology2005，，10： | 1 |
| 15 | Changes of collagen metabolism predict the left ventricular remodeling after myocardial infarction显示文摘 | Jirmar Radovan Pelouch Vaclav Widimsky Petr Capek Jan Andel Michal Prusa Richard Pechova Martina | 2006 | Molecular and Cellular Biochemistry (-)2006，，1： | 1 |
| 16 | Geographical and taxonomic biases in invasion ecology显示文摘 | Petr Py?ek David M. Richardson Jan Pergl Vojtěch Jaro?ík Zuzana Sixtová Ewald Weber | 2008 | Trends in Ecology & Evolution2008，，5： | 1 |
| 17 | Atlantoaxial fixation using the polyaxial screw–rod system显示文摘 | Jan Stulik Tomas Vyskocil Petr Sebesta Jan Kryl | 2007 | European Spine Journal2007，，4： | 1 |
| 18 | Changing insights in the diagnosis and classification of autosomal recessive and dominant von Willebrand diseases 1980-2015显示文摘The European Clinical Laboratory and Molecular(ECLM) criteria define 10 distinct Willebrand diseases(VWD) recessive type 3, severe 1, 2C and 2N; dominant VWD type 1 secretion/clearance defect, 2A, 2B, 2E, 2M and 2D; and mild type 1 VWD(usually carriers of recessive VWD). Recessive severe 1 and 2C VWD are characterized by secretion and multimerization defects caused by mutations in the D1-D2 domain. Recessive 2N VWD is a mild hemophilia due to D'-FVIII-von Willebrand factor(VWF) binding site mutations. Dominant 2E VWD caused by heterozygous missense mutations in the D3 domain is featured by a secretion-clearancemultimerization VWF defect. Dominant VWD type 2M due to loss of function mutations in the A1 domain is characterized by decreased ristocetin-induced platelet aggregation and VWF RCo, normal VWF multimers and VWF CB, a poor response of VWF RCo and good response of VWF CB to desmopressin(DDAVP). Dominant VWD type 2A induced by heterozygous mutations in the A2 domain results in hypersensitivity of VWF for proteolysis by ADAMTS13 into VWF degradationproducts, resulting in loss of large VWF multimers with triplet structure of each individual VWF band. Dominant VWD type 2B due to a gain of function mutation in the A1 domain is featured by spontaneous interaction between platelet glycoprotein Ib(GPIb) and mutated VWF A1 followed by increased proteolysis with loss of large VWF multimers and presence of each VWF band. A new category of dominant VWD type 1 secretion or clearance defect due to mutations in the D3 domain or D4-C1-C5 domains consists of two groups Those with normal or smeary pattern of VWF multimers. | Jan Jacques Michiels Angelika Batorova Tatiana Prigancova Petr Smejkal Miroslav Penka Inge Vangenechten Alain Gadisseur | 2016 | World Journal of Hematology2016，5，3： | 1 |
| 19 | Vented confined explosions in Stramberk experimen- tal mine and AutoReaGas simulation 显示文摘 | Bretislav Janovsky Petr Selesovskyb Jan Horkel | 2006 | Journal of Loss Prevention in the Process Industries2006，19，23： | 1 |
| 20 | On the limits of applicability of spectrophotometer and spectrofluorimetric methods for the determination of chlorophyll a/b ratio 显示文摘 | ROMAN K PETR I JAN N | 1999 | Photosynthesis Research1999，，62： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员