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Jungwirth J, Urbanova M, Boot A, Hosek P, Bendova P, Siskova A, Svec J, Kment M, Tumova D, Summerova S, Benes Z, Buchler T, Kohout P, Hucl T, Matej R, Vodickova L, van Wezel T, Vodicka P, Vymetalkova V. Author Correction: Mutational analysis of driver genes defines the colorectal adenoma: in situ carcinoma transition. Sci Rep 2022; 12:5595. [PMID: 35379882 PMCID: PMC8980008 DOI: 10.1038/s41598-022-09561-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Jungwirth J, Urbanova M, Boot A, Hosek P, Bendova P, Siskova A, Svec J, Kment M, Tumova D, Summerova S, Benes Z, Buchler T, Kohout P, Hucl T, Matej R, Vodickova L, van Wezel T, Vodicka P, Vymetalkova V. Mutational analysis of driver genes defines the colorectal adenoma: in situ carcinoma transition. Sci Rep 2022; 12:2570. [PMID: 35173208 PMCID: PMC8850440 DOI: 10.1038/s41598-022-06498-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 01/13/2022] [Indexed: 01/07/2023] Open
Abstract
A large proportion of colorectal carcinomas (CRC) evolve from colorectal adenomas. However, not all individuals with colonic adenomas have a risk of CRC substantially higher than those of the general population. The aim of the study was to determine the differences or similarities of mutation profile among low- and high-grade adenomas and in situ carcinoma with detailed follow up. We have investigated the mutation spectrum of well-known genes involved in CRC (such as APC, BRAF, EGFR, NRAS, KRAS, PIK3CA, POLE, POLD1, SMAD4, PTEN, and TP53) in a large, well-defined series of 96 adenomas and in situ carcinomas using a high-throughput genotyping technique. Besides, the microsatellite instability and APC and MLH1 promoter methylation were studied as well. We observed a high frequency of pathogenic variants in the studied genes. The APC, KRAS and TP53 mutation frequencies were slightly lower in adenoma samples than in in situ carcinoma samples. Further, when we stratified mutation frequency based on the grade, the frequency distribution was as follows: low-grade adenoma—high-grade adenomas—in situ carcinoma: APC gene 42.9–56.0–54.5%; KRAS gene 32.7–32.0–45.5%; TP53 gene 8.2–20.0–18.2%. The occurrence of KRAS mutation was associated with the presence of villous histology and methylation of the APC promoter was significantly associated with the presence of POLE genetic variations. However, no association was noticed with the presence of any singular mutation and occurrence of subsequent adenoma or CRC. Our data supports the multistep model of gradual accumulation of mutations, especially in the driver genes, such as APC, TP53 and KRAS.
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Affiliation(s)
- Jiri Jungwirth
- Institute of Biology and Medical Genetics, Institute of Physiology, 1st Faculty of Medicine, Charles University, Albertov 4, 128 00, Prague, Czech Republic.,Department of Surgery, Weiden Clinic, Söllnerstraße 16, 92637, Weiden in der Oberpfalz, Germany
| | - Marketa Urbanova
- Institute of Biology and Medical Genetics, Institute of Physiology, 1st Faculty of Medicine, Charles University, Albertov 4, 128 00, Prague, Czech Republic.,Department of Molecular Biology of Cancer, Institute of Experimental Medicine of the Czech Academy of Sciences, Videnska 1083, 142 00, Prague, Czech Republic
| | - Arnoud Boot
- Department of Pathology, Leiden University Medical Center, Leiden, The Netherlands
| | - Petr Hosek
- Biomedical Center, Faculty of Medicine in Pilsen, Charles University, Alej Svobody 76, 323 00, Pilsen, Czech Republic
| | - Petra Bendova
- Department of Molecular Biology of Cancer, Institute of Experimental Medicine of the Czech Academy of Sciences, Videnska 1083, 142 00, Prague, Czech Republic.,Biomedical Center, Faculty of Medicine in Pilsen, Charles University, Alej Svobody 76, 323 00, Pilsen, Czech Republic
| | - Anna Siskova
- Institute of Biology and Medical Genetics, Institute of Physiology, 1st Faculty of Medicine, Charles University, Albertov 4, 128 00, Prague, Czech Republic.,Department of Molecular Biology of Cancer, Institute of Experimental Medicine of the Czech Academy of Sciences, Videnska 1083, 142 00, Prague, Czech Republic
| | - Jiri Svec
- Institute of Molecular Genetics of the Czech Academy of Sciences, Videnska 1083, 142 20, Prague, Czech Republic.,Department of Radiotherapy and Oncology, Third Faculty of Medicine, Charles University, Srobarova 50, 100 34, Prague 10, Czech Republic
| | - Milan Kment
- Second Department of Internal Medicine, Third Faculty of Medicine, Charles University, Srobarova 50, 100 34, Prague 10, Czech Republic
| | - Daniela Tumova
- DT Gastroenterology, Roskotova 1/1225, Prague 4, Czech Republic
| | - Sandra Summerova
- Department of Internal Medicine, Third Faculty of Medicine Charles University and Thomayer University Hospital, Ruska 87, 100 00, Prague, Czech Republic
| | - Zdenek Benes
- Department of Internal Medicine, Third Faculty of Medicine Charles University and Thomayer University Hospital, Ruska 87, 100 00, Prague, Czech Republic
| | - Tomas Buchler
- Department of Oncology, First Faculty of Medicine, Charles University and Thomayer University Hospital, Videnska 800, 140 59, Prague, Czech Republic
| | - Pavel Kohout
- Department of Internal Medicine, Third Faculty of Medicine Charles University and Thomayer University Hospital, Ruska 87, 100 00, Prague, Czech Republic
| | - Tomas Hucl
- Department of Hepatogastroenterology, Institute for Clinical and Experimental Medicine, Videnska 1958/9, 140 21, Prague, Czech Republic
| | - Radoslav Matej
- Department of Pathology and Molecular Medicine, Third Faculty of Medicine, Charles University and Thomayer University Hospital, Videnska 800, 140 59, Prague, Czech Republic.,Department of Pathology, Third Faculty of Medicine, Charles University and University Hospital Kralovske Vinohrady, Srobarova 50, 100 34, Prague 10, Czech Republic
| | - Ludmila Vodickova
- Institute of Biology and Medical Genetics, Institute of Physiology, 1st Faculty of Medicine, Charles University, Albertov 4, 128 00, Prague, Czech Republic.,Department of Molecular Biology of Cancer, Institute of Experimental Medicine of the Czech Academy of Sciences, Videnska 1083, 142 00, Prague, Czech Republic.,Biomedical Center, Faculty of Medicine in Pilsen, Charles University, Alej Svobody 76, 323 00, Pilsen, Czech Republic
| | - Tom van Wezel
- Department of Pathology, Leiden University Medical Center, Leiden, The Netherlands
| | - Pavel Vodicka
- Institute of Biology and Medical Genetics, Institute of Physiology, 1st Faculty of Medicine, Charles University, Albertov 4, 128 00, Prague, Czech Republic.,Department of Molecular Biology of Cancer, Institute of Experimental Medicine of the Czech Academy of Sciences, Videnska 1083, 142 00, Prague, Czech Republic.,Biomedical Center, Faculty of Medicine in Pilsen, Charles University, Alej Svobody 76, 323 00, Pilsen, Czech Republic
| | - Veronika Vymetalkova
- Institute of Biology and Medical Genetics, Institute of Physiology, 1st Faculty of Medicine, Charles University, Albertov 4, 128 00, Prague, Czech Republic. .,Department of Molecular Biology of Cancer, Institute of Experimental Medicine of the Czech Academy of Sciences, Videnska 1083, 142 00, Prague, Czech Republic. .,Biomedical Center, Faculty of Medicine in Pilsen, Charles University, Alej Svobody 76, 323 00, Pilsen, Czech Republic.
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Novotná M, Kment M, Viklický O. Antibody-Mediated Rejection of Renal Allografts: Diagnostic Pitfalls and Challenges. Physiol Res 2021; 70:S551-S565. [DOI: 10.33549/physiolres.934801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Antibody-mediated rejection (ABMR) is a major obstacle to the long-term success in kidney transplantation. Diagnosis of ABMR is determined according to the internationally recognized Banff criteria. However, a significant proportion of patients does not meet all the defined criteria, and the outcome of such cases remains poorly understood. The histology of ABMR frequently lacks sensitivity and specificity. More importantly, mixed forms of ABMR and T cell-mediated rejection as well as findings of nonspecific injury are common in clinical settings. Donor-specific anti-HLA antibodies (DSA) are detectable only in half of the ABMR cases by histology. Prognostic role of non-HLA antibodies against various endothelial proteins has been discussed. Antibody independent NK cell activation reflecting killer-cells’ inhibitory receptor incompatibility is suggested in microvascular inflammation in DSA negative patients. Molecular assessment of ABMR has been prioritized to overcome high interobserver variability and improve diagnostics in mixed forms of rejections and in DSA negative cases. Finally, donor-derived cell-free DNA detected in a recipient’s peripheral blood sample has been proposed as a noninvasive marker for diagnosis of graft rejection, and thus might serve as a liquid biopsy in the near future. Despite all achievements, diagnosing ABMR in kidney allografts remains to be a challenge in a significant number of cases.
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Novotný M, Kment M, Viklický O. Adipose tissue macrophages and atherogenesis – a synergy with cholesterolaemia. Physiol Res 2021. [DOI: 10.33549//physiolres.934801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Antibody-mediated rejection (ABMR) is a major obstacle to the long-term success in kidney transplantation. Diagnosis of ABMR is determined according to the internationally recognized Banff criteria. However, a significant proportion of patients does not meet all the defined criteria, and the outcome of such cases remains poorly understood. The histology of ABMR frequently lacks sensitivity and specificity. More importantly, mixed forms of ABMR and T cell-mediated rejection as well as findings of nonspecific injury are common in clinical settings. Donor-specific anti-HLA antibodies (DSA) are detectable only in half of the ABMR cases by histology. Prognostic role of non-HLA antibodies against various endothelial proteins has been discussed. Antibody independent NK cell activation reflecting killer-cells’ inhibitory receptor incompatibility is suggested in microvascular inflammation in DSA negative patients. Molecular assessment of ABMR has been prioritized to overcome high interobserver variability and improve diagnostics in mixed forms of rejections and in DSA negative cases. Finally, donor-derived cell-free DNA detected in a recipient’s peripheral blood sample has been proposed as a noninvasive marker for diagnosis of graft rejection, and thus might serve as a liquid biopsy in the near future. Despite all achievements, diagnosing ABMR in kidney allografts remains to be a challenge in a significant number of cases.
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Affiliation(s)
| | | | - O Viklický
- Department of Nephrology, Institute for Clinical and Experimental Medicine, Prague, Czech Republic.
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Kollár M, Krajčíová J, Husťak R, Malušková J, Kment M, Vacková Z, Špičák J, Martínek J. Confocal laser endomicroscopy in the diagnostics of gastrointestinal lesions literary review and personal experience. Rozhl Chir 2018; 97:531-538. [PMID: 30646731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
INTRODUCTION Confocal laser endomicroscopy (CLE) is a new method enabling real-time histopathological diagnosis. Two platforms of CLE are used standardly: the so called probe-based CLE in which an endomicroscopic probe is inserted through an endoscope, and so-called needle-based CLE inserted through a needle. METHODS CLE enables evaluation of epithelial and subepithelial structures with 1000x magnification in any part of the gastrointestinal system. The main advantage over conventional biopsies can be immediate diagnosis and larger area evaluated. CLE might play a promising role in indeterminate biliary lesions where biopsies are often not sufficient and fail to allow for accurate diagnosis. CLE can also have a promising potential in pancreatic lesions where it is used along with the needle designed for tissue aspiration during endosonography. It is also possible to use CLE in other organ systems and medical specialties, e.g. in pneumology, neurosurgery, ENT and others. CONCLUSION CLE is a promising diagnostic method; however, it is unlikely to replace standard biopsies currently since these are still considered a gold standard of histopathological diagnosis. High purchase price is a main disadvantage of the method, hampering its expansion in medicine. Key words: confocal laser endomicroscopy CLE biliary strictures pancreatic lesions esophageal carcinoma Rozhl Chir 2018;97:531-538.
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Ergang P, Vodička M, Vagnerová K, Moravec M, Kvapilová P, Kment M, Pácha J. Inflammation regulates 11β-hydroxysteroid dehydrogenase type 1 differentially in specific compartments of the gut mucosal immune system. Steroids 2017; 126:66-73. [PMID: 28754259 DOI: 10.1016/j.steroids.2017.07.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Revised: 07/03/2017] [Accepted: 07/20/2017] [Indexed: 11/24/2022]
Abstract
The bioavailability of glucocorticoids is modulated by enzyme 11β-hydroxysteroid dehydrogenase type 1 (11HSD1), which catalyzes the conversion of inactive 11-oxo-glucocorticoids to active 11-hydroxy-glucocorticoids cortisol and corticosterone and is regulated by pro-inflammatory cytokines. Our aim was to assess the effect of colitis on the expression of 11HSD1 in specific microanatomical compartments of the mucosal immune system. Using qRT-PCR we quantified the expression of 11HSD1 and cytokines in the colon, mesenteric lymph nodes (MLN) and spleen of mice with colitis. Microsamples of the MLN cortex, paracortex and medulla, colonic crypt epithelium (CCE), lamina propria and isolated intestinal lymphoid follicles (ILF) were harvested by laser microdissection, whereas splenic and MLN lymphocytes by flow cytometry. Colitis increased 11HSD1 in the CCE, ILF, and MLN cortex but not in the lamina propria and the MLN paracortex and medulla. Expression of IL-4, IL-21 and TNFα was increased in both the cortex of MLN and ILF, whereas IL-1β and IL-10 were only increased in the follicles. No positive effect was observed in the case of IFNγ and TGFβ. 11HSD1 was positively correlated with TNFα and less strongly with IL-21, IL-1β, and IL-4. Colitis also upregulated the 11HSD1 expression of T cells in the spleen and MLN. The study demonstrates the stimulatory effect of inflammation on local glucocorticoid metabolism only in particular compartments of the mucosal immune system. The correlation between cytokines and 11HSD1 in the ILF and MLN cortex indicates that pro-inflammatory cytokines may amplify glucocorticoid signals in inductive compartments of the mucosal immune system.
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Affiliation(s)
- Peter Ergang
- Institute of Physiology, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Martin Vodička
- Institute of Physiology, Academy of Sciences of the Czech Republic, Prague, Czech Republic; Department of Physiology, Faculty of Science, Charles University, Prague, Czech Republic
| | - Karla Vagnerová
- Institute of Physiology, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Martin Moravec
- Institute of Physiology, Academy of Sciences of the Czech Republic, Prague, Czech Republic; Second Department of Internal Medicine, Third Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Pavlína Kvapilová
- Institute of Physiology, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Milan Kment
- Second Department of Internal Medicine, Third Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Jiří Pácha
- Institute of Physiology, Academy of Sciences of the Czech Republic, Prague, Czech Republic; Department of Physiology, Faculty of Science, Charles University, Prague, Czech Republic.
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Kojecký V, Dastych M, Zádorová Z, Varga M, Hajer J, Kment M, Kroupa R, Kunovská M, Matouš J, Mišurec M, Hep A, Kianička B, Latta J. [Effective bowel preparation before coloscopy - low-volume PEG in the divided dose regimen]. Vnitr Lek 2016; 62:249-254. [PMID: 27250601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
INTRODUCTION The good and safe bowel cleansing is key to the success of coloscopy. The standard preparation involves 4 l polyethylene glycol (PEG). Now the combination of PEG and ascorbic acid (PEGA) of half the volume is available. Besides the type of product also the time factors which are not clarified, play a role during the bowel preparation. The aim of the study was to compare the efficiency and tolerance of both the agents and evaluate the effect of the time regimen of preparation. METHODS 380 individuals were included in the evaluation in 4 cohorts which used 4 l PEG (Fortrans) in a single dose or split into 3 + 1 l and PEG + ascorbic acid (Moviprep) split into 1 + 1 l or 2 l one day before examination. RESULTS There was no difference between the agents as to the quality of bowel preparation, when they were used in the same regimen. The bowel cleansing was better in both cases in the divided dose regimen (p < 0.001), and it was inversely proportional to the length of preparation (p = 0.003) and directly proportional to the length of time between the end of preparation and coloscopy (p < 0.001). PEGA was better tolerated (p < 0.028), regardless of the preparation regimen. CONCLUSION PEG and PEGA are similarly efficient in the bowel preparation before coloscopy provided they are used in a similar regimen. The best results are reached when the preparation is divided into 2 days. PEGA is better tolerated than PEG, regardless of the used regimen. The quality of bowel cleansing is affected by the length of preparation (optimally up to 12 hours) and the time elapsed from the preparation until examination (up to 8 hours).
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Švec J, Schwarzová L, Janošíková B, Štekrová J, Mandys V, Kment M, Vodička P. Synchronous gastric and sebaceous cancers, a rare manifestation of MLH1-related Muir-Torre syndrome. Int J Clin Exp Pathol 2014; 7:5196-5202. [PMID: 25197397 PMCID: PMC4152087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Accepted: 07/23/2014] [Indexed: 06/03/2023]
Abstract
Muir-Torre syndrome (MTS), a rare variant of the hereditary non polyposis colorectal cancer syndrome, is an autosomal dominant genodermatosis characterised by coincidence of sebaceous gland neoplasms (sebaceous adenoma, epithelioma, or carcinoma) and at least one internal malignancy. The underlying cause of MTS is a germline mutation in DNA mismatch repair genes MSH2, MLH1 and MSH6. We report the case of a 52-year-old caucasian woman with the development of metachronous colon cancer at the age of 38 years, uterine cancer at the age of 43 years, and unique occurrence of synchronous gastric and sebaceous carcinomas related to germline point mutation c. 2194A>T in the last exon of MLH1 gene, resulting in truncated protein in C-terminal region p. Lys732X due to premature stop codon. This mutation, not previously reported in MTS, disrupts the function of MutL complexes presumably by preventing the interaction with PMS1/PMS2 and impairing the endonuclease active site. This case points out the importance of sebaceous neoplasia, especially sebaceous adenocarcinoma, as cutaneous markers of MTS for timely implementation of cancer screening programs.
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Affiliation(s)
- Jiří Švec
- 2nd Department of Internal Medicine, 3rd Faculty of Medicine, Charles UniversityPrague
- Department of Molecular Biology of Cancer, Institute of Experimental Medicine, Academy of Sciences of the Czech RepublicPrague
| | - Lucie Schwarzová
- Institute of Biology and Medical Genetics, 1st Faculty of Medicine and General Teaching Hospital, Charles UniversityPrague
| | - Bohumila Janošíková
- Institute of Biology and Medical Genetics, 1st Faculty of Medicine and General Teaching Hospital, Charles UniversityPrague
| | - Jitka Štekrová
- Institute of Biology and Medical Genetics, 1st Faculty of Medicine and General Teaching Hospital, Charles UniversityPrague
| | - Václav Mandys
- Department of Pathology, 3rd Faculty of Medicine, Charles UniversityPrague
| | - Milan Kment
- 2nd Department of Internal Medicine, 3rd Faculty of Medicine, Charles UniversityPrague
| | - Pavel Vodička
- Department of Molecular Biology of Cancer, Institute of Experimental Medicine, Academy of Sciences of the Czech RepublicPrague
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Kment M. [Zdeněk Mařatka and his share in the founding of the Czech Gastroenterological Society and its journal. Gastroenterological Society in Czech and Slovac republics]. Vnitr Lek 2014; 60:611-616. [PMID: 25130638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Zdeněk Mařatka (1914-2010) was a leading person in a Czech and Slovak gastroenterology in spite of the infavourable approach of the official communist policy to him.. He was one of the founders of gastroenterology in Czechoslovakia. He had been habilitated in 1948 for thesis Ulcerative colitis. Mařatka stood at the first steps of foundation of Czech Gastroenterology Society very soon after the WW2 and followed with the preparation as a secretary ge-neral of the 8th ASNEMGE Congress in Prague 1968 and as a president the 1st Congress of Endoscopy in the very optimistic atmosphere of ,,Prague Spring". He was nominated or elected by several international gastroenterology organisations, during 1976-1980 had been President of ESGE. He started with editoring of Czech gastroenterology Association journal as a member of editorial board and had been its main editor between 1969-1999. His well appreciated novelty in the magazine was a short remarks in one or two sentences from the world scientific literature which appeared in every copy. As an editor emeritus he supported the quality of the journal by many advices and contributions including articles.
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Moravec M, Svec J, Ergang P, Mandys V, Reháková L, Zádorová Z, Hajer J, Kment M, Pácha J. Expression of 11β-hydroxysteroid dehydrogenase type 2 is deregulated in colon carcinoma. Histol Histopathol 2013; 29:489-96. [PMID: 24189979 DOI: 10.14670/hh-29.10.489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Although the effects of glucocorticoids on proliferation, differentiation and apoptosis are well known, and steroid hormones have been identified to play a role in pathogenesis and the development of various cancers, limited data are available regarding the relationship between the local metabolism of glucocorticoids and colorectal adenocarcinoma (CRC) formation. Glucocorticoid metabolism is determined by 11β-hydroxysteroid dehydrogenases type 1 and 2 (11HSD1, 11HSD2), which increase the local concentration of cortisol due to the reduction of cortisone, or decrease this concentration due to the oxidation of cortisol. The objective of this study was to evaluate the extent of 11HSD1 and 11HSD2 mRNA in pre-malignant colorectal polyps and in CRC. The specimens were retrieved from patients by endoscopic or surgical resection and the expression of 11HSD1 and 11HSD2 was measured by real-time PCR. The polyps were of the following histological types: hyperplastic polyps and adenomas with low- or high-grade dysplasia. The neoplastic tissue of CRC obtained during tumor surgery was also studied. It was found that 11HSD2 was not only downregulated in CRC but already in the early stages of neoplastic transformation (adenoma with low-grade dysplasia). In contrast, the level of 11HSD1 was significantly increased in CRC but not in pre-malignant polyps. The results demonstrate that the downregulation of 11HSD2 gene expression is a typical feature of the development of colorectal polypous lesions and their transformation into CRC.
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Affiliation(s)
- Martin Moravec
- Institute of Physiology, Academy of Sciences of the Czech Republic, and Second Department of Internal Medicine, Third Faculty of Medicine, Prague, Czech Republic
| | - Jirí Svec
- Institute of Physiology, Academy of Sciences of the Czech Republic, and Second Department of Internal Medicine, Third Faculty of Medicine, Prague, Czech Republic
| | - Peter Ergang
- Institute of Physiology, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Václav Mandys
- Department of Pathology, Third Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Lenka Reháková
- Department of Pathology, Third Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Zdena Zádorová
- Second Department of Internal Medicine, Third Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Jan Hajer
- Second Department of Internal Medicine, Third Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Milan Kment
- Second Department of Internal Medicine, Third Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Jirí Pácha
- Institute of Physiology, Academy of Sciences of the Czech Republic, and Department of Physiology, Faculty of Science, Charles University, Prague, Czech Republic.
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Hock M, Soták M, Kment M, Pácha J. The early effect of dextran sodium sulfate administration on carbachol-induced short-circuit current in distal and proximal colon during colitis development. Physiol Res 2011; 60:921-31. [PMID: 21995894 DOI: 10.33549/physiolres.932222] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Increased colonic Cl(-) secretion was supposed to be a causative factor of diarrhea in inflammatory bowel diseases. Surprisingly, hyporesponsiveness to Cl(-) secretagogues was later described in inflamed colon. Our aim was to evaluate changes in secretory responses to cholinergic agonist carbachol in distal and proximal colon during colitis development, regarding secretory activity of enteric nervous system (ENS) and prostaglandins. Increased responsiveness to carbachol was observed in both distal and proximal colon after 3 days of 2 % dextran sodium sulfate (DSS) administration. It was measured in the presence of mucosal Ba(2+) to emphasize Cl(-) secretion. The described increase was abolished by combined inhibitory effect of tetrodotoxin (TTX) and indomethacin. Indomethacin also significantly reduced TTX-sensitive current. On the 7th day of colitis development responsiveness to carbachol decreased in distal colon (compared to untreated mice), but did not change in proximal colon. TTX-sensitive current did not change during colitis development, but indomethacin-sensitive current was significantly increased the 7th day. Decreased and deformed current responses to serosal Ba(2+) were observed during colitis induction, but only in proximal colon. We conclude that besides inhibitory effect of DSS on distal colon responsiveness, there is an early stimulatory effect that manifests in both distal and proximal colon.
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Affiliation(s)
- M Hock
- Institute of Physiology, Academy of Sciences of the Czech Republic, Prague, Czech Republic.
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Ergang P, Leden P, Vagnerová K, Klusonová P, Miksík I, Jurcovicová J, Kment M, Pácha J. Local metabolism of glucocorticoids and its role in rat adjuvant arthritis. Mol Cell Endocrinol 2010; 323:155-60. [PMID: 20226838 DOI: 10.1016/j.mce.2010.03.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2009] [Revised: 02/24/2010] [Accepted: 03/08/2010] [Indexed: 11/20/2022]
Abstract
11beta-Hydroxysteroid dehydrogenase 1 (11HSD1) regulates local glucocorticoid activity and plays an important role in various diseases. Here, we studied whether arthritis modulates 11HSD1, what is the role of pro-inflammatory cytokines in this process and whether altered local metabolism of glucocorticoids may contribute to the feedback regulation of inflammation. Adjuvant arthritis increased synovial 11HSD1 mRNA and 11-reductase activity but treatments with tumor necrosis factor alpha (TNF-alpha) and interleukin 1beta (IL-1beta) antagonists etanercept and anakinra reduced 11HSD1 upregulation. Treatment with carbenoxolone, an 11HSD inhibitor, increased expression of TNF-alpha, cyclooxygenase 2, and osteopontin mRNA without any changes in the plasma levels of corticosterone. Similar changes were observed when arthritic rats were treated with RU486, an antagonist of GR. This study suggests that arthritis upregulates synovial 11HSD1, this upregulation is controlled by TNF-alpha and IL-1beta and that the increased supply of local corticosterone might contribute to feedback regulation of inflammation.
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Affiliation(s)
- Peter Ergang
- Institute of Physiology, Academy of Sciences of the Czech Republic, Vídenská 1083, 14220 Prague 4-Krc, Czech Republic
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Svec J, Musílková J, Bryndová J, Jirásek T, Mandys V, Kment M, Pácha J. Enhanced expression of proproliferative and antiapoptotic genes in ulcerative colitis-associated neoplasia. Inflamm Bowel Dis 2010; 16:1127-37. [PMID: 20027603 DOI: 10.1002/ibd.21178] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND Inflammatory bowel diseases including long-standing ulcerative colitis (UC) have an increased risk of evolving into colorectal cancer (CRC). The overexpression of some proproliferative and antiapoptotic genes, such as survivin, telomerase catalytic subunit (hTERT), integrin-linked kinase (ILK), and regulatory factors c-MYB and Tcf-4, has been implicated in the development and progression of several human malignancies including CRC. METHODS In this study we analyzed the expression alterations of these markers and proinflammatory enzymes cyclooxygenase 2 (COX-2) and inducible nitric oxide synthase (iNOS) during the transition of colonic mucosa from chronic inflammation to epithelial neoplasia in biopsies of UC patients using quantitative real-time polymerase chain reaction and immunohistochemistry; additionally, we compared the expression profiles of this gene panel in samples of patients with CRC after tumor resection and in human tumor xenografts of SW620 malignant colonic cells. RESULTS The transcript levels of survivin, c-MYB, COX-2, iNOS, and Tcf-4 showed a statistically significant increase during neoplastic transformation of UC patient colonic mucosa, whereas hTERT and ILK were not elevated. In contrast, the specimens of CRC showed upregulated expression of not only survivin, c-MYB, Tcf-4, COX-2, and iNOS but also hTERT. A similar expression profile was observed in human tumor xenografts in which all transcripts with the exception of c-MYB were upregulated. CONCLUSIONS These results suggest that telomerase and ILK activation occurs during the later stages of carcinoma progression, whereas upregulation of survivin, c-MYB, and Tcf-4 is a feature of the early stage of development of neoplasia, and thus, they might serve as early indicators for UC-associated colorectal carcinogenesis.
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Affiliation(s)
- Jirí Svec
- Second Department of Internal Medicine, Third Faculty of Medicine, Charles University, Prague, Czech Republic
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Svec J, Ergang P, Mandys V, Kment M, Pácha J. Expression profiles of proliferative and antiapoptotic genes in sporadic and colitis-related mouse colon cancer models. Int J Exp Pathol 2010; 91:44-53. [PMID: 20096072 DOI: 10.1111/j.1365-2613.2009.00698.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Elevated levels of survivin, telomerase catalytic subunit (TERT), integrin-linked kinase (ILK), cyclooxygenase 2 (COX-2), inducible nitric oxide synthase (iNOS) and the regulatory factors c-MYB and Tcf-4 are often found in human cancers including colorectal cancer (CRC) and have been implicated in the development and progression of tumorigenesis. The aim of this study was to determine the expression of these genes in mouse models of sporadic and colitis-associated CRC. To address these issues, we used qRT-PCR approach to determine changes in gene expression patterns of neoplastic cells (high-grade dysplasia/intramucosal carcinoma) and surrounding normal epithelial cells in A/J and ICR mouse strains using laser microdissection. Both strains were injected with azoxymethane and ICR mice were also given drinking water that contained 2% dextran sodium sulphate. In both sporadic (A/J mice) and colitis-associated (ICR mice) models of CRC, the levels of TERT mRNA, COX-2 mRNA and Tcf-4 mRNA were higher in neoplastic cells than in surrounding normal epithelial cells. In contrast, survivin mRNA was upregulated only in neoplastic cells from A/J mice and ILK mRNA was upregulated only in neoplastic cells from ICR mice. However, the expression of iNOS mRNA was similar in normal and neoplastic cells in both models and c-MYB mRNA was actually downregulated in neoplastic cells compared with normal cells in both models. These findings suggest that the genetic background and/or the molecular mechanisms of tumorigenesis associated with genotoxic insults and colonic inflammation influence the gene expression of mTERT, COX-2, Tcf-4, c-MYB, ILK and survivin in colon epithelial neoplasia.
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Affiliation(s)
- Jirí Svec
- Second Department of Internal Medicine, Third Faculty of Medicine, Charles University, Prague, Czech Republic
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Zbánková S, Bryndová J, Leden P, Kment M, Svec A, Pácha J. 11beta-hydroxysteroid dehydrogenase 1 and 2 expression in colon from patients with ulcerative colitis. J Gastroenterol Hepatol 2007; 22:1019-23. [PMID: 17608848 DOI: 10.1111/j.1440-1746.2006.04529.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND AND AIM 11beta-hydroxysteroid dehydrogenase (11betaHSD) is an enzyme responsible for the interconversion of active 11beta-hydroxysteroids (cortisol) into biologically inactive 11-oxosteroids (cortisone). The isoform 11betaHSD1 operates predominantly as a reductase converting cortisone to cortisol, whereas 11betaHSD2 catalyzes oxidation of cortisol to cortisone. This mechanism of peripheral metabolism of glucocorticoids has been suggested to be involved in increasing the availability of anti- inflammatory glucocorticoids as a response to inflammatory stimuli. The aim of this study therefore was to investigate the impact of inflammatory bowel disease on the expression of colonic 11betaHSD1 and 11betaHSD2. METHODS Quantitative real-time RT-PCR was used to assess messenger RNA for 11betaHSD1 and 11betaHSD2 in bioptic samples taken from patients with ulcerative colitis and in healthy controls, and in colon of rats with colitis induced by dextran sulfate sodium (DSS). Rat colonic fragments were used for assessment of local metabolism of glucocorticoids. RESULTS In both human and rat specimens colitis up-regulated the expression of colonic 11betaHSD1 mRNA and down-regulated 11betaHSD2 mRNA. A similar pattern was observed at the level of local metabolism of corticosterone. Oxidation of corticosterone to 11-dehydrocorticosterone was decreased and reduction of 11-dehydrocorticosterone to corticosterone was increased in colonic tissue of rats with DSS-colitis. CONCLUSIONS Colonic inflammation induces local glucocorticoid activation via 11betaHSD1 and impairs glucocorticoid inactivation via 11betaHSD2. The observed changes indicate a role for local metabolism of glucocorticoids in the control of colonic inflammation.
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Affiliation(s)
- Sárka Zbánková
- Institute of Physiology, Czech Academy of Sciences, Prague, Czech Republic
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Gürlich R, Sixta B, Oliverius M, Kment M, Rusina R, Spicák J, Sváb J. [Laparoscopic distal resection of the pancreas]. Rozhl Chir 2005; 84:463-5. [PMID: 16250619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
During the last two years, reports on laparoscopic procedures of the pancreas have been on increase. Laparoscopic resection of the pancreatic cauda is indicated, primarily, for benign cystic lesions of the cauda of the pancreas and for neuroendocrine tumors of the pancreas (mainly insulinomas). We have not recorded any report on the above procedure in the Czech literature. Therefore, in our case review, we have described laparoscopic distal resection of the pancreas with splenectomy for a pseudopapillary tumor of the pancreas.
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Affiliation(s)
- R Gürlich
- Klinika transplantacní chirurgie IKEM, Praha.
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Zbánková S, Bryndová J, Kment M, Pácha J. Expression of 11beta-hydroxysteroid dehydrogenase types 1 and 2 in colorectal cancer. Cancer Lett 2004; 210:95-100. [PMID: 15172126 DOI: 10.1016/j.canlet.2003.12.019] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2003] [Revised: 10/17/2003] [Accepted: 12/31/2003] [Indexed: 11/21/2022]
Abstract
Glucocorticoid hormones have been reported to operate as regulators of cell proliferation and differentiation and to inhibit growth of several colon tumors and adenocarcinoma cell lines. The glucocorticoid action is regulated, in part, at the pre-receptor level through the expression of isoforms of 11beta-hydroxysteroid dehydrogenase (11betaHSD1, 11betaHSD2) which are responsible for the interconversion of hormonally active cortisol to cortisone. Since both of these isoforms are expressed in the mammalian colon, we examined whether 11betaHSD1 and 11betaHSD2 are expressed in human colorectal cancer and whether their expression differs between neoplastic and autologous non-neoplastic tissue. We provide evidence that both isoforms of 11betaHSD are expressed in the colon adenocarcinoma, but their expression is not identical in neoplastic and non-neoplastic tissue. There is a significant decrease of 11betaHSD2 mRNA abundance and enzyme activity in neoplastic tissue. In contrast, 11betaHSD1 activity and mRNA abundance are increased in some but not all tumor samples. The results demonstrate that (1) neoplastic transformation is associated with decreasing steady-state levels of 11betaHSD2 mRNA and enzyme activity and in some cases also with increasing expression of 11betaHSD1, and (2) colorectal tumor cells have a decreased capability of autocrine inactivation of glucocorticoids.
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Affiliation(s)
- Sárka Zbánková
- Department of Internal Medicine, Charles University, Prague, Czech Republic
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18
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Abstract
BACKGROUND Pro-inflammatory processes are counteracted by anti-inflammatory factors such as glucocorticoids. The response of target cells to glucocorticoids depends on several factors including prereceptor modulation of glucocorticoid signals via local glucocorticoid metabolism. This is determined by two isoforms of 11beta-hydroxysteroid dehydrogenase (11betaHSD); 11betaHSD1 operates in vivo as a reductase converting inactive 11-oxo glucocorticoids to active glucocorticoids cortisol or corticosterone, whereas 11betaHSD2 catalyses oxidation of active glucocorticoids to their inactive 11-oxo derivatives. The aim of this study was to investigate the changes in local metabolism of glucocorticoids and in the expression of 11betaHSD1 and 11betaHSD2 mRNA during colonic inflammation. METHODS Acute colitis was induced by intracolonic administration of 2,4,6-trinitrobenzenesulphonic acid (TNBS) or by drinking a dextran sodium sulphate (DSS) solution. Metabolism of glucocorticoids was measured in tissue fragments in vitro and 11betaHSD1 and 11betaHSD2 mRNA abundance was quantified using real-time RT-PCR one week after administration of TNBS and 10 days after drinking the DSS solution. RESULTS In both models of inflammatory bowel disease we observed down-regulation of corticosterone oxidation to 11-dehydrocorticosterone by 64% (TNBS) and 53% (DSS) and reciprocal stimulation of reduction of 11-dehydrocorticosterone to corticosterone by 83% and 54%, respectively. A similar pattern was observed at the level of mRNA; 11betaHSD1 mRNA was significantly higher (TNBS: increase by 660%; DSS: increase by 760%) and 11betaHSD2 mRNA lower (TNBS: decrease by 85%; DSS: decrease by 60%) during inflammation. CONCLUSIONS Colitis induces local glucocorticoid activation from 11-oxo steroids and decreases glucocorticoid inactivation; i.e. inflammation increases local tissue ratio of active and inactive glucocorticoids. The results indicate that the changes in local metabolism of glucocorticoids could contribute to the control of an overshoot of inflammation processes in the colon.
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Affiliation(s)
- J Bryndová
- Institute of Physiology, Czech Academy of Sciences, Prague, Czech Republic
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Hajer J, Kepelová A, Zádorová Z, Kment M. Two novel germline mutations (Y548X and K732X) of the MLH1 gene in Czech patients with hereditary nonpolyposis colorectal cancer. Hum Mutat 2000; 16:181. [PMID: 10923051 DOI: 10.1002/1098-1004(200008)16:2<181::aid-humu22>3.0.co;2-r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- J Hajer
- 3(rd) Medical Faculty, Charles University Prague, Department of Gastroenterology, Czech Republic.
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Kment M, Haskovcová H. [Report on the activity of the Central Commission on Ethics of the Ministry of Health 1990-1994]. Cas Lek Cesk 1995; 134:562-4. [PMID: 7553761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The authors summarize the most important activities of the Central ethical commission at home and abroad during four years of its existence. They mention documents elaborated for the needs of the broad public and local ethical commissions incl. the Statute of the central ethical commission. Experience with evaluation of ethical problems pertaining to relations between health professionals and the lay public indicate above all impaired mutual communication. The authors feel that wide publicity of ethical problems in the professional and lay press is essential and should be permanently stimulated.
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Affiliation(s)
- M Kment
- Centrální etická komise pri Ministerstvu zdravotnictví CR, Praha
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Kment M, Haskovcova H. Czech central ethics committee at work. Bull Med Ethics 1993; No. 92:16-9. [PMID: 11652227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
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22
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Kment M, Haskovcová H. [Ethics committees in the Czech Republic]. Cas Lek Cesk 1993; 132:376-80. [PMID: 8343947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The authors submit a report on the establishment and activities of new advisory organs which developed in hospitals and at medical faculties and bear the name of ethical commissions. Their task is to approve grants, advisory activities as well as organizing public discussions of ethical problems. The basis of the report are data obtained by means of questionnaires completed by 62 respondents. At present there are 20 ethical commissions in the Czech Republic, 19 local ones and one central one.
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Affiliation(s)
- M Kment
- II. interní klinika 3. LF UK, Praha
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Kment M, Haskovcová H. [Report on the activities of the Central Commission on Ethics of the Czech Ministry of Health 1990-1992]. Cas Lek Cesk 1993; 132:148-51. [PMID: 8472296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The central ethical commission (CEC) of the Czech Ministry of Health was founded in 1990. The authors submit a report on the activities of this advisory and expert in the sphere of medical ethics. They emphasize that a standpoint was elaborated regarding the problem of doping in the Czech Republic, a moral code of patients' rights and other important documents. The CEC takes into account also views of chairmen of local ethical commissions which were assembled by means of a questionnaire. The CEC foresee its future activity in particular in adequate presentation of its views to the professional and lay public.
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Kment M. [The significance of colonoscopy in the diagnosis of carcinoma of the colon]. Cesk Gastroenterol Vyz 1983; 37:495-500. [PMID: 6652728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Kment M, Novotný J, Vísek V. [Follow-up of patients after colonic polypectomy]. Cesk Gastroenterol Vyz 1983; 37:428-32. [PMID: 6652718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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26
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Kment M. [Enteral nutrition in Great Britain]. Vnitr Lek 1983; 29:820-822. [PMID: 6415916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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Abstract
An adenoma of the non-pigmented ciliary body was removed locally; 15 years later the eye was enucleated. The globe contained a small tumor with similar histological features but invasive growth.
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Kment M, Vísek V, Novotný J, Osmera P, Nechvátal V. [Endoscopic polypectomy in the large intestine (author's transl)]. Cesk Gastroenterol Vyz 1981; 35:382-6. [PMID: 7317959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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29
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Kment M, Petríková J, Hrabal P. [Cancer of pancreas as a cause of oesophagus stenosis (author's transl)]. Cesk Gastroenterol Vyz 1981; 35:327-30. [PMID: 7285146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Kment M, Novotný J, Theuer J. [The contribution of endoscopy of the upper digestive tract to clinical diagnosis]. Vnitr Lek 1978; 24:778-85. [PMID: 695344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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31
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Kment M, Cikrt M. [Zinc and liver diseases]. Cesk Gastroenterol Vyz 1978; 32:131-7. [PMID: 350434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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32
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Kment M, Theuer J, Skála J. [Contribution of endoscopy to the diagnosis and treatment of gastric bezoars (author's transl)]. Cesk Gastroenterol Vyz 1977; 31:263-7. [PMID: 890767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Kment M, Kimlová I, Vísek V. [Radioimmunoanalysis of gastrin in gastroenterological practice (author's transl)]. Cesk Gastroenterol Vyz 1977; 31:26-30. [PMID: 852008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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34
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Procházka M, Kment M. [Massive hemorrhage from the upper part of the gastrointestinal tract]. Rozhl Chir 1976; 55:246-51. [PMID: 1084579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Kment M, Cikrt M, Kotas P, Obrusník I, Beniac F. [Changes in the copper, zinc and manganese concentration of hepatic tissue in patients with chronic affections of the liver (author's transl)]. Cesk Gastroenterol Vyz 1975; 29:171-5. [PMID: 1131876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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36
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Kment M, Cikrt M, Tichý M. [Changes in metal concentrations in hepatic tissue in some liver diseases. I. Assessment of Zn, Cu and Mn concentrations in necroptic material (author's transl)]. Cesk Gastroenterol Vyz 1973; 27:475-9. [PMID: 4760010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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