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Juracek J, Stanik M, Vesela P, Radova L, Dolezel J, Svoboda M, Slaby O. Tumor expression of miR-34a-3p is an independent predictor of recurrence in non–muscle-invasive bladder cancer and promising additional factor to improve predictive value of EORTC nomogram. Urol Oncol 2019; 37:184.e1-184.e7. [DOI: 10.1016/j.urolonc.2018.10.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 10/08/2018] [Accepted: 10/10/2018] [Indexed: 12/17/2022]
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Juracek J, Peltanova B, Dolezel J, Fedorko M, Pacik D, Radova L, Vesela P, Svoboda M, Slaby O, Stanik M. Genome-wide identification of urinary cell-free microRNAs for non-invasive detection of bladder cancer. J Cell Mol Med 2018; 22:2033-2038. [PMID: 29363887 PMCID: PMC5824364 DOI: 10.1111/jcmm.13487] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Accepted: 11/09/2017] [Indexed: 12/11/2022] Open
Abstract
Urinary microRNAs (miRNAs) are emerging as clinically useful tool for early and non‐invasive detection of various types of cancer including bladder cancer (BCA). In this study, 205 patients with BCA and 99 healthy controls were prospectively enrolled. Expression profiles of urinary miRNAs were obtained using Affymetrix miRNA microarrays (2578 miRNAs) and candidate miRNAs further validated in independent cohorts using qRT‐PCR. Whole‐genome profiling identified 76 miRNAs with significantly different concentrations in urine of BCA compared to controls (P < 0.01). In the training and independent validation phase of the study, miR‐31‐5p, miR‐93‐5p and miR‐191‐5p were confirmed to have significantly higher levels in urine of patients with BCA in comparison with controls (P < 0.01). We further established 2‐miRNA‐based urinary DxScore (miR‐93‐5p, miR‐31‐5p) enabling sensitive BCA detection with AUC being 0.84 and 0.81 in the training and validation phase, respectively. Moreover, DxScore significantly differed in the various histopathological subgroups of BCA and decreased post‐operatively. In conclusion, we identified and independently validated cell‐free urinary miRNAs as promising biomarkers enabling non‐invasive detection of BCA.
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Affiliation(s)
- Jaroslav Juracek
- Central European Institute of Technology, Masaryk University, Brno, Czech Republic
| | - Barbora Peltanova
- Central European Institute of Technology, Masaryk University, Brno, Czech Republic
| | - Jan Dolezel
- Department of Urologic Oncology, Masaryk Memorial Cancer Institute, Brno, Czech Republic
| | - Michal Fedorko
- Department of Urology, University Hospital Brno, Masaryk University Brno, Brno, Czech Republic
| | - Dalibor Pacik
- Department of Urology, University Hospital Brno, Masaryk University Brno, Brno, Czech Republic
| | - Lenka Radova
- Central European Institute of Technology, Masaryk University, Brno, Czech Republic
| | - Petra Vesela
- Central European Institute of Technology, Masaryk University, Brno, Czech Republic
| | - Marek Svoboda
- Department of Comprehensive Cancer Care, Masaryk Memorial Cancer Institute, Brno, Czech Republic
| | - Ondrej Slaby
- Central European Institute of Technology, Masaryk University, Brno, Czech Republic.,Department of Comprehensive Cancer Care, Masaryk Memorial Cancer Institute, Brno, Czech Republic
| | - Michal Stanik
- Department of Urologic Oncology, Masaryk Memorial Cancer Institute, Brno, Czech Republic
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Fedorko M, Juracek J, Stanik M, Svoboda M, Poprach A, Buchler T, Pacik D, Dolezel J, Slaby O. Detection of let-7 miRNAs in urine supernatant as potential diagnostic approach in non-metastatic clear-cell renal cell carcinoma. Biochem Med (Zagreb) 2017; 27:411-417. [PMID: 28694731 PMCID: PMC5493171 DOI: 10.11613/bm.2017.043] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2017] [Accepted: 05/08/2017] [Indexed: 01/30/2023] Open
Abstract
Introduction Urinary microRNAs (miRNAs) are emerging as a clinically useful tool for early and non-invasive detection of various types of cancer. The aim of this study was to evaluate whether let-7 family miRNAs differ in their urinary concentrations between renal cell carcinoma (RCC) cases and healthy controls. Materials and methods In the case-control study, 69 non-metastatic clear-cell RCC patients and 36 gender/age-matched healthy controls were prospectively enrolled. Total RNA was purified from cell-free supernatant of the 105 first morning urine specimens. Let-7 family miRNAs were determined in cell-free supernatant using quantitative miRNA real-time reverse-transcription PCR and absolute quantification approach. Results Concentrations of all let-7 miRNAs (let-7a, let-7b, let-7c, let-7d, let-7e and let-7g) were significantly higher in urine samples obtained from RCC patients compared to healthy controls (P < 0.001; P < 0.001; P = 0.005; P = 0.006; P = 0.015 and P = 0.002, respectively). Subsequent ROC analysis has shown that let-7a concentration possesses good ability to differentiate between cases and controls with area under curve being 0.8307 (sensitivity 71%, specificity 81%). Conclusions We have shown that let-7 miRNAs are abundant in the urine samples of patients with clear-cell RCC, and out of six let-7 family members, let-7a outperforms the others and presents promising non-invasive biomarker for the detection of RCC.
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Affiliation(s)
- Michal Fedorko
- Department of Urology, University Hospital Brno and Masaryk University Brno, Brno, Czech Republic
| | - Jaroslav Juracek
- Masaryk University, Central European Institute of Technology, Brno, Czech Republic
| | - Michal Stanik
- Masaryk Memorial Cancer Institute, Department of Urologic Oncology, Brno, Czech Republic
| | - Marek Svoboda
- Masaryk Memorial Cancer Institute, Department of Comprehensive Cancer Care, Brno, Czech Republic
| | - Alexandr Poprach
- Masaryk Memorial Cancer Institute, Department of Comprehensive Cancer Care, Brno, Czech Republic
| | - Tomas Buchler
- Department of Oncology, Thomayer Hospital and Charles University First Faculty of Medicine, Prague, Czech Republic
| | - Dalibor Pacik
- Department of Urology, University Hospital Brno and Masaryk University Brno, Brno, Czech Republic
| | - Jan Dolezel
- Masaryk Memorial Cancer Institute, Department of Urologic Oncology, Brno, Czech Republic
| | - Ondrej Slaby
- Masaryk University, Central European Institute of Technology, Brno, Czech Republic.,Masaryk Memorial Cancer Institute, Department of Comprehensive Cancer Care, Brno, Czech Republic
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Juracek J, Machackova T, Vecera M, Souckova K, Sana J, Ahmad P, Gablo NA, Slaby O, Stanik M, Dolezel J. Abstract 5451: Panel of urinary cell-free microRNAs in detection of urinary bladder cancer. Cancer Res 2017. [DOI: 10.1158/1538-7445.am2017-5451] [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: 11/16/2022]
Abstract
Abstract
Bladder cancer is the most common cancer of the urinary tract. More than 90% of bladder cancers are urothelial carcinoma, which are divided into non-muscle-invasive and muscle-invasive forms. Non-muscle-invasive tumors frequently recur (50-70%) and can also progress to invasion form (10-15%). These patients are monitored by cystoscopy and may have multiple resections over many years. Improved monitoring method is needed, ideally via urine analysis, which could reduce the morbidity and costs associated with long follow up. Currently there are no molecular biomarkers which could diagnose or accurately predict disease progression. We aimed to develop a clinically applicable, specific and sensitive panel of urine microRNAs enabling detect bladder cancer and predict risk of progression to muscle-invasive form.Within the exploratory phase of study we have analyzed expression profiles of 1733 miRNAs in urine supernatant of 16 bladder cancer patients (6 muscle invasive, 5 high-grade muscle non-invasive, 5 low-grade muscle non-invasive), 17 controls, 10 RCC patients and 4 urinary tract infections (UTI) using Affymetrix miRNA microarrays. Diagnostic and prognostic potential of selected microRNAs was further validated on independent samples in training phase (50 bladder cancer patients, 15 controls) and validation phase (100 bladder cancer patients, 55 controls, 45 renal cancer patients) using specific TaqMan assays and qRT-PCR method.Global expression profiling identified set of 76 miRNAs able distinguish bladder cancer patients from healthy controls (P < 0,01), thereof 64 highly up-regulated and 12 down-regulated. Moreover 23 miRNAs were able distinguish invasive and non-invasive forms of UCUB (P < 0,01) and 18 miRNAs high-grade and low-grad non-invasive (p < 0,01). Set of 12 miRNAs with highest expression level and statistical significance was validated in training phase of study. Based on the results the panel of three miRNAs (miR-31, miR-93, miR-191) was profiled. In validation phase we confirmed diagnostic potential and ability of this urine miRNA-based panel to diagnose patients with bladder cancer with high sensitivity and specificity (AUC = 0,8794, sensitivity = 82%, specificity = 80%).Our data have shown that urinary microRNAs could serve as sensitive and specific biomarkers of urinary bladder cancer and could be useful tool to increase sensitivity of standard cytological examination and reduce costs associated with long-term follow-up of bladder cancer patients. This work was supported by Ministry of Health of the Czech Republic, grant nr. 15-33158A, 15-34553A, 15-31627A, 15-34678A, 16-31314A, 16-31765A and by grant of Czech Grant Agency nr. 16-18257S.. All rights reserved.
Citation Format: Jaroslav Juracek, Tana Machackova, Marek Vecera, Kamila Souckova, Jiri Sana, Parwez Ahmad, Natalia Anna Gablo, Ondrej Slaby, Michal Stanik, Jan Dolezel. Panel of urinary cell-free microRNAs in detection of urinary bladder cancer [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2017; 2017 Apr 1-5; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2017;77(13 Suppl):Abstract nr 5451. doi:10.1158/1538-7445.AM2017-5451
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Affiliation(s)
- Jaroslav Juracek
- 1CEITEC - Central European Institute of Technology, Brno, Czech Republic
| | - Tana Machackova
- 1CEITEC - Central European Institute of Technology, Brno, Czech Republic
| | - Marek Vecera
- 1CEITEC - Central European Institute of Technology, Brno, Czech Republic
| | - Kamila Souckova
- 1CEITEC - Central European Institute of Technology, Brno, Czech Republic
| | - Jiri Sana
- 1CEITEC - Central European Institute of Technology, Brno, Czech Republic
| | - Parwez Ahmad
- 1CEITEC - Central European Institute of Technology, Brno, Czech Republic
| | - Natalia Anna Gablo
- 1CEITEC - Central European Institute of Technology, Brno, Czech Republic
| | - Ondrej Slaby
- 1CEITEC - Central European Institute of Technology, Brno, Czech Republic
| | - Michal Stanik
- 2MMCI - Masaryk Memorial Cancer Institute, Brno, Czech Republic
| | - Jan Dolezel
- 2MMCI - Masaryk Memorial Cancer Institute, Brno, Czech Republic
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Iliev R, Fedorko M, Machackova T, Mlcochova H, Svoboda M, Pacik D, Dolezel J, Stanik M, Slaby O. Expression Levels of PIWI-interacting RNA, piR-823, Are Deregulated in Tumor Tissue, Blood Serum and Urine of Patients with Renal Cell Carcinoma. Anticancer Res 2017. [PMID: 27919963 DOI: 10.21873/antic anres.11239] [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] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
BACKGROUND Renal cell carcinoma (RCC) is the most common neoplasm of adult kidney accounting for about 3% of adult malignancies. P-Element induced wimpy testis (PIWI)-interacting RNAs (piRNAs) are a new class of naturally occurring, short non-coding RNAs involved in silencing of transposable elements and in sequence-specific chromatin modifications. There were preliminary data published indicating that piR-823 expression is deregulated in circulating tumor cells and tumor tissue in gastric and kidney cancer, respectively. PATIENTS AND METHODS In our study, we analyzed piR-823 levels in 588 biological specimens: tumor tissue (N=153), adjacent renal parenchyma (N=121), blood serum (N=178) and urine (N=20) of patients undergoing nephrectomy for RCC; and in blood serum (N=101) and urine (N=15) of matched healthy controls. Expression levels of piR-823 were determined in all biological specimens by quantitative real-time polymerase chain reaction, compared in patients and controls, and correlated with clinicopathological features of RCC. RESULTS We identified a significant down-regulation of piR-823 in tumor tissue [p<0.0001, area under the curve (AUC)=0.7945]. On the contrary in blood serum and urine, the expression of piR-823 was significantly higher in patients with RCC compared to healthy individuals (p=0.0005, AUC=0.6264 and p=0.0157, AUC=0.7433, respectively). We further observed higher levels of piR-823 in tumor tissue to be associated with shorter disease-free survival of patients (p=0.0186) and a trend for higher piR-823 levels in serum to be associated with advanced clinical stages of RCC (p=0.0691). There were no other significant associations of piR-823 levels in any type of biological specimen with clinicopathological features of RCC. CONCLUSION piR-823 is down-regulated in tumor tissue, but positively correlated with worse outcome, indicating its complex role in RCC pathogenesis. In blood serum, piR-823 is up-regulated, but with unsatisfactory analytical performance. Preliminary data indicate the promising diagnostic utility of urinary piR-823 in patients with RCC.
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Affiliation(s)
- Robert Iliev
- Central European Institute of Technology, Masaryk University, Brno, Czech Republic.,Department of Comprehensive Cancer Care, Masaryk Memorial Cancer Institute, Brno, Czech Republic
| | - Michal Fedorko
- Department of Urology, University Hospital Brno, Masaryk University, Brno, Czech Republic
| | - Tana Machackova
- Central European Institute of Technology, Masaryk University, Brno, Czech Republic
| | - Hana Mlcochova
- Central European Institute of Technology, Masaryk University, Brno, Czech Republic
| | - Marek Svoboda
- Central European Institute of Technology, Masaryk University, Brno, Czech Republic.,Department of Comprehensive Cancer Care, Masaryk Memorial Cancer Institute, Brno, Czech Republic
| | - Dalibor Pacik
- Department of Urology, University Hospital Brno, Masaryk University, Brno, Czech Republic
| | - Jan Dolezel
- Department of Urologic Oncology, Masaryk Memorial Cancer Institute, Brno, Czech Republic
| | - Michal Stanik
- Department of Urologic Oncology, Masaryk Memorial Cancer Institute, Brno, Czech Republic
| | - Ondrej Slaby
- Central European Institute of Technology, Masaryk University, Brno, Czech Republic .,Department of Comprehensive Cancer Care, Masaryk Memorial Cancer Institute, Brno, Czech Republic
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Opletalova V, Dolezel J, Kunes J, Buchta V, Vejsova M, Kucerova-Chlupacova M. Synthesis and Antifungal Screening of 2-{[1-(5-Alkyl/arylalkylpyrazin-2-yl)ethylidene]hydrazono}-1,3-thiazolidin-4-ones. Molecules 2016; 21:molecules21111592. [PMID: 27886119 PMCID: PMC6274558 DOI: 10.3390/molecules21111592] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Revised: 11/16/2016] [Accepted: 11/16/2016] [Indexed: 12/31/2022] Open
Abstract
Two novel thiosemicarbazones and eight novel 2-{[1-(5-alkyl/arylalkylpyrazin-2-yl)ethylidene]hydrazono}-1,3-thiazolidin-4-ones were prepared and tested against a panel of eight fungal strains–Candida albicans ATCC 44859, Candida tropicalis 156, Candida krusei E 28, Candida glabrata 20/I, Trichosporon asahii 1188, Aspergillus fumigatus 231, Lichtheimia corymbifera 272, and Trichophyton interdigitale 445. 1,3-Thiazolidin-4-ones exhibited activity against all strains, the most potent derivative was 2-{[1-(5-butylpyrazin-2-yl)ethylidene]hydrazono}e-1,3-thiazolidin-4-one. Susceptibility of C. glabrata to the studied 1,3-thiazolidin-4-ones (minimum inhibitory concentrations (MICs) were in the range 0.57 to 2.78 mg/L) is of great interest as this opportunistic pathogen is poorly susceptible to azoles and becomes resistant to echinocandins. Antifungal potency of thiosemicarbazones was slightly lower than that of 1,3-thiazolidin-4-ones.
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Affiliation(s)
- Veronika Opletalova
- Department of Pharmaceutical Chemistry and Pharmaceutical Analysis, Faculty of Pharmacy in Hradec Kralove, Charles University, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic.
| | - Jan Dolezel
- GlaxoSmithKline, Hvezdova 1734/2c, 140 00 Prague, Czech Republic.
| | - Jiri Kunes
- Department of Inorganic and Organic Chemistry, Faculty of Pharmacy in Hradec Kralove, Charles University, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic.
| | - Vladimir Buchta
- Department of Biological and Medical Sciences, Faculty of Pharmacy in Hradec Kralove, Charles University, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic.
- Department of Clinical Microbiology, University Hospital Hradec Kralove, Sokolska 581, 500 05 Hradec Kralove, Czech Republic.
| | - Marcela Vejsova
- Department of Biological and Medical Sciences, Faculty of Pharmacy in Hradec Kralove, Charles University, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic.
- Department of Clinical Microbiology, University Hospital Hradec Kralove, Sokolska 581, 500 05 Hradec Kralove, Czech Republic.
| | - Marta Kucerova-Chlupacova
- Department of Pharmaceutical Chemistry and Pharmaceutical Analysis, Faculty of Pharmacy in Hradec Kralove, Charles University, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic.
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Mlcochova H, Machackova T, Rabien A, Radova L, Fabian P, Iliev R, Slaba K, Poprach A, Kilic E, Stanik M, Redova-Lojova M, Svoboda M, Dolezel J, Vyzula R, Jung K, Slaby O. Epithelial-mesenchymal transition-associated microRNA/mRNA signature is linked to metastasis and prognosis in clear-cell renal cell carcinoma. Sci Rep 2016; 6:31852. [PMID: 27549611 PMCID: PMC4994011 DOI: 10.1038/srep31852] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [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: 02/22/2016] [Accepted: 07/28/2016] [Indexed: 02/06/2023] Open
Abstract
Clear-cell renal cell carcinomas (ccRCCs) are genetically heterogeneous tumors presenting diverse clinical courses. Epithelial-mesenchymal transition (EMT) is a crucial process involved in initiation of metastatic cascade. The aim of our study was to identify an integrated miRNA/mRNA signature associated with metastasis and prognosis in ccRCC through targeted approach based on analysis of miRNAs/mRNAs associated with EMT. A cohort of 230 ccRCC was included in our study and further divided into discovery, training and validation cohorts. EMT markers were evaluated in ccRCC tumor samples, which were grouped accordingly to EMT status. By use of large-scale miRNA/mRNA expression profiling, we identified miRNA/mRNA with significantly different expression in EMT-positive tumors and selected 41 miRNAs/mRNAs for training phase of the study to evaluate their diagnostic and prognostic potential. Fifteen miRNAs/mRNAs were analyzed in the validation phase, where all evaluated miRNA/mRNA candidates were confirmed to be significantly deregulated in tumor tissue. Some of them significantly differed in metastatic tumors, correlated with clinical stage, with Fuhrman grade and with overall survival. Further, we established an EMT-based stage-independent prognostic scoring system enabling identification of ccRCC patients at high-risk of cancer-related death. Finally, we confirmed involvement of miR-429 in EMT regulation in RCC cells in vitro.
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Affiliation(s)
- Hana Mlcochova
- Masaryk University, Central European Institute of Technology (CEITEC), Kamenice 5, 625 00, Brno, Czech Republic.,Masaryk Memorial Cancer Institute, Department of Comprehensive Cancer Care, Zluty kopec 7, 656 53, Brno, Czech Republic
| | - Tana Machackova
- Masaryk University, Central European Institute of Technology (CEITEC), Kamenice 5, 625 00, Brno, Czech Republic
| | - Anja Rabien
- University Hospital Charite, Humboldt University, Department of Urology, Schumannstrasse 20/21, D-10117 Berlin, Germany.,Berlin Institute for Urologic Research, Robert-Koch Platz 7, 10115 Berlin, Germany
| | - Lenka Radova
- Masaryk University, Central European Institute of Technology (CEITEC), Kamenice 5, 625 00, Brno, Czech Republic
| | - Pavel Fabian
- Masaryk Memorial Cancer Institute, Department of Diagnostic and Experimental Pathology, Zluty kopec 7, 656 53, Brno, Czech Republic
| | - Robert Iliev
- Masaryk University, Central European Institute of Technology (CEITEC), Kamenice 5, 625 00, Brno, Czech Republic
| | - Katerina Slaba
- Masaryk Memorial Cancer Institute, Department of Comprehensive Cancer Care, Zluty kopec 7, 656 53, Brno, Czech Republic
| | - Alexandr Poprach
- Masaryk Memorial Cancer Institute, Department of Comprehensive Cancer Care, Zluty kopec 7, 656 53, Brno, Czech Republic
| | - Ergin Kilic
- University Hospital Charite, Humboldt University, Institute of Pathology, Schumannstrasse 20/21, D-10117 Berlin, Germany
| | - Michal Stanik
- Masaryk Memorial Cancer Institute, Department of Urologic Oncology, Zluty kopec 7, 656 53, Brno, Czech Republic
| | - Martina Redova-Lojova
- Masaryk University, Central European Institute of Technology (CEITEC), Kamenice 5, 625 00, Brno, Czech Republic
| | - Marek Svoboda
- Masaryk University, Central European Institute of Technology (CEITEC), Kamenice 5, 625 00, Brno, Czech Republic.,Masaryk Memorial Cancer Institute, Department of Comprehensive Cancer Care, Zluty kopec 7, 656 53, Brno, Czech Republic
| | - Jan Dolezel
- Masaryk Memorial Cancer Institute, Department of Urologic Oncology, Zluty kopec 7, 656 53, Brno, Czech Republic
| | - Rostislav Vyzula
- Masaryk Memorial Cancer Institute, Department of Comprehensive Cancer Care, Zluty kopec 7, 656 53, Brno, Czech Republic
| | - Klaus Jung
- University Hospital Charite, Humboldt University, Department of Urology, Schumannstrasse 20/21, D-10117 Berlin, Germany.,Berlin Institute for Urologic Research, Robert-Koch Platz 7, 10115 Berlin, Germany
| | - Ondrej Slaby
- Masaryk University, Central European Institute of Technology (CEITEC), Kamenice 5, 625 00, Brno, Czech Republic.,Masaryk Memorial Cancer Institute, Department of Comprehensive Cancer Care, Zluty kopec 7, 656 53, Brno, Czech Republic
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Iliev R, Kleinova R, Juracek J, Dolezel J, Ozanova Z, Fedorko M, Pacik D, Svoboda M, Stanik M, Slaby O. Overexpression of long non-coding RNA TUG1 predicts poor prognosis and promotes cancer cell proliferation and migration in high-grade muscle-invasive bladder cancer. Tumour Biol 2016; 37:13385-13390. [DOI: 10.1007/s13277-016-5177-9] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Accepted: 07/12/2016] [Indexed: 02/21/2023] Open
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Iliev R, Faltejskova-Vychytilova P, Ozanova Z, Rybecka S, Juracek J, Mlcochova J, Radova L, Stanik M, Dolezel J, Fedorko M, Pacik D, Slaby O. Abstract 1953: MiRNA and piRNA expression profiles in renal cell carcinoma tissue detected by next generation sequencing. Cancer Res 2016. [DOI: 10.1158/1538-7445.am2016-1953] [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: 11/16/2022]
Abstract
Abstract
MicroRNAs (miRNAs) are the class of small non-coding RNAs, about 21-25 nucleotides in length, that play an important role in regulation of transcription. They affect gene expression at post-transcriptional levels through binding to complementary mRNAs and mediate their degradation in RISC complex. Piwi-interacting RNAs (piRNAs) is newly discovered class of non-coding RNA. PiRNAs are short single-stranded RNAs with 26-31 nucleotides in length. They are involved in silencing of transposable elements and it is assumed that also participate in sequence-specific chromatin modifications. It was repeatedly shown that piRNAs are present also in somatic cells and are dysregulated in kidney, bladder, gastric, breast, pancreatic and liver cancers. According to small non-coding RNA databases there are about 2600 mature miRNAs and more than 24 000 piRNAs in humans. There were extensive studies aiming to discover miRNAs and to analyze their functions. However, there are only few published studies of miRNA and piRNA profiles in renal cell carcinoma (RCC) using next generation sequencing (NGS) technology.
In our study we used the tumor tissue and the paired adjacent non-tumor renal parenchyma of 12 patients (8 males and 4 females) with RCC treated in Masaryk Memorial Cancer Institute (Brno, Czech Republic). RNA was isolated with mirVana™ miRNA Isolation Kit. For preparing RNA library was used TruSeq Small RNA Sample Preparation Kit from Illumina and then the miSeq sequencing technology was employed to detect small RNAs.
In our 12 paired samples of tumor tissue and the paired adjacent non-tumor renal parenchyma we detected 283 miRNAs with over 1 read in at least 7 samples. Expression levels of 55 miRNAs were significantly different expressed (p < 0.05) in tumor tissue and adjacent non-tumor parenchyma. Among miRNAs with the most significantly altered expression (p < 0.01) were for example, miR-129, miR-138, miR-142, miR-149, miR-154, miR-155, miR-200b, miR-210, miR-218, miR-340, miR-584, miR-885, miR-891a, miR-1270, miR-3690 and miR-7641. After analyzing piRNA sequences we found 440 piRNAs with over 1 read in at least 7 samples. From these piRNAs were 38 piRNAs significantly deregulated (p<0.01) in RCC tissue, whereas the most significantly different expression levels were determined in piR-1207, piR-2107, piR-2155, piR-12487, piR-12488, piR-21508, piR-23230, piR-26525, piR-26527and piR-28131.
In our pilot study we found altered expression patterns of miRNAs and piRNAs in tumor tissue of RCC and paired adjacent non-tumor renal parenchyma. For the first time, we have described piRNAs expression profile in RCC tissue by NGS approach.
This work was supported by Ministry of Health of the Czech Republic, grant nr. 15-33158A, 15-34553A, 15-31627A and 15-34678A. All rights reserved.
Citation Format: Robert Iliev, Petra Faltejskova-Vychytilova, Zuzana Ozanova, Silvia Rybecka, Jaroslav Juracek, Jitka Mlcochova, Lenka Radova, Michal Stanik, Jan Dolezel, Michal Fedorko, Dalibor Pacik, Ondrej Slaby. MiRNA and piRNA expression profiles in renal cell carcinoma tissue detected by next generation sequencing. [abstract]. In: Proceedings of the 107th Annual Meeting of the American Association for Cancer Research; 2016 Apr 16-20; New Orleans, LA. Philadelphia (PA): AACR; Cancer Res 2016;76(14 Suppl):Abstract nr 1953.
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Affiliation(s)
| | | | | | | | | | | | | | - Michal Stanik
- 2Masaryk Memorial Cancer Institute, Department of Urologic Oncology, Brno, Czech Republic
| | - Jan Dolezel
- 2Masaryk Memorial Cancer Institute, Department of Urologic Oncology, Brno, Czech Republic
| | - Michal Fedorko
- 3University Hospital Brno, Department of Urology, Brno, Czech Republic
| | - Dalibor Pacik
- 3University Hospital Brno, Department of Urology, Brno, Czech Republic
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Iliev R, Stanik M, Fedorko M, Poprach A, Vychytilova-Faltejskova P, Slaba K, Svoboda M, Fabian P, Pacik D, Dolezel J, Slaby O. Decreased expression levels of PIWIL1, PIWIL2, and PIWIL4 are associated with worse survival in renal cell carcinoma patients. Onco Targets Ther 2016; 9:217-22. [PMID: 26811690 PMCID: PMC4712976 DOI: 10.2147/ott.s91295] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Piwi-interacting RNAs (piRNAs) are a newly discovered class of small non-coding RNAs involved in silencing of transposable elements and in sequence-specific chromatin modifications. PIWI proteins (PIWIL), which belong to the family of Argonaute genes/proteins, bind to piRNAs and function mainly in germ line cells, but more recently were described to be functional also in stem cells and cancer cells. To date, there have been four PIWI proteins discovered in humans: PIWIL1, PIWIL2, PIWIL3, and PIWIL4. Recent studies suggested that deregulated expression of PIWI proteins and selected piRNAs is common to many types of cancers. We found significantly lower expression of PIWIL1 (P<0.0001) and piR-823 (P=0.0001) in tumor tissue in comparison to paired renal parenchyma. Further, we observed a progressive decrease in PIWIL1 (P=0.0228), PIWIL2 (P=0.0015), and PIWIL4 (P=0.0028) expression levels together with increasing clinical stage. PIWIL2 (P=0.0073) and PIWIL4 (P=0.0001) expression also progressively decreased with increasing Fuhrman grade. Most importantly, low-expression levels of PIWIL1 (P=0.009), PIWIL2 (P<0.0001), and PIWIL4 (P=0.0065) were significantly associated with worse overall survival in renal cell carcinoma (RCC) patients. Our results suggest the involvement of PIWIL genes and piR-823 in RCC pathogenesis, and indicate PIWIL1, PIWIL2, and PIWIL4 as potential prognostic biomarkers in patients with RCC.
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Affiliation(s)
- Robert Iliev
- Department of Comprehensive Cancer Care, Masaryk Memorial Cancer Institute, Brno, Czech Republic; Central European Institute of Technology, Masaryk University, Brno, Czech Republic
| | - Michal Stanik
- Department of Urologic Oncology, Masaryk Memorial Cancer Institute, Brno, Czech Republic
| | - Michal Fedorko
- Department of Urology, University Hospital Brno, Masaryk University Brno, Brno, Czech Republic
| | - Alexandr Poprach
- Department of Comprehensive Cancer Care, Masaryk Memorial Cancer Institute, Brno, Czech Republic
| | - Petra Vychytilova-Faltejskova
- Department of Comprehensive Cancer Care, Masaryk Memorial Cancer Institute, Brno, Czech Republic; Central European Institute of Technology, Masaryk University, Brno, Czech Republic
| | - Katerina Slaba
- Central European Institute of Technology, Masaryk University, Brno, Czech Republic
| | - Marek Svoboda
- Department of Comprehensive Cancer Care, Masaryk Memorial Cancer Institute, Brno, Czech Republic
| | - Pavel Fabian
- Department of Diagnostic and Experimental Pathology, Masaryk Memorial Cancer Institute, Brno, Czech Republic
| | - Dalibor Pacik
- Department of Comprehensive Cancer Care, Masaryk Memorial Cancer Institute, Brno, Czech Republic
| | - Jan Dolezel
- Central European Institute of Technology, Masaryk University, Brno, Czech Republic
| | - Ondrej Slaby
- Department of Urologic Oncology, Masaryk Memorial Cancer Institute, Brno, Czech Republic; Department of Urology, University Hospital Brno, Masaryk University Brno, Brno, Czech Republic
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11
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Iliev R, Vychytilova-Faltejskova P, Juracek J, Mlcochova H, Stanik M, Dolezel J, Fedorko M, Pacik D, Svoboda M, Slaby O. Abstract 237: Piwi genes and tissue/serum piR-651 are related to clinicopathologic features of renal cell carcinoma. Cancer Res 2015. [DOI: 10.1158/1538-7445.am2015-237] [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: 11/16/2022]
Abstract
Abstract
Introduction: Piwi-interacting RNAs (piRNAs) consists a newly discovered class of non-coding RNA. PiRNAs were first identified in the germ cells of various animal species. They bind to Piwi proteins which are a subfamily of Argonaut proteins. In humans were identified four Ago genes and four Piwi genes. Human Piwi genes include PIWIL1, PIWIL2, PIWIL3 and PIWIL4. Recent studies suggest that deregulated expression of Piwi proteins is common to many types of tumors and also correlate with clinicopathologic features and worse prognosis in patients with breast, cervical, ovarian, colorectal and other cancers. PiRNAs are short single-stranded RNAs with 26-31 nucleotides in length. They are involved in silencing of transposable elements and it is assumed that also participate in sequence-specific chromatin modifications. The differential expression of piRNAs was found in gastric and breast cancer. In our pilot study we analyzed expression of Piwi genes and piR-651, which was previously found to be deregulated in various types of tumors.
Patients and Methods: In our study, we have used the tumor tissue and the paired renal parenchyma tissue of 56 patients with renal cell carcinoma (RCC). From the tissue was isolated total RNA and by RT-qPCR were examined the expression of Piwi genes and piR-651. For the analysis of circulating piR-651, blood serum samples of 75 patients with RCC and 75 age, gender-matched healthy donors were used. We have compared expression levels of the studied genes in tumor and non-tumor tissues, serum samples, and also correlated them with clinicopathologic features of RCC patients (stage, grade, RFS, OS).
Results: We found a significant down-regulation of PIWIL1 (p<0,0001) and piR-651 (p<0,0001) expression levels in tumor tissue when compared to paired renal parenchyma samples. The expression levels of PIWIL2, PIWIL3 and PIWIL4 were not significantly deregulated in tumor tissue. Interestingly, levels of PIWIL2 and PIWIL4 correlated significantly with the stage (p = 0,002 and p = 0,003, resp.) and grade (p = 0.007 and p<0.0001, resp.) of RCC. We found also a correlation between higher levels of PIWIL1 and overall survival (p<0.05). We have observed significantly decreased expression levels of piR-651 in blood serum samples of RCC patients when compared to healthy donors and accordingly to ROC analysis we were able to distinguish blood serum of RCC patients and control subjects with the sensitivity of 77.33% and a specificity of 72.37%. Expression levels of serum piR-651 were not in correlation with the stage and grade of RCC.
Conclusion: Accordingly to our pilot data expression of Piwi genes is altered in tumor tissue and is correlated to selected clinicopathologic features of RCC. We also suggest the potential of piR-651 in blood serum as novel non-invasive diagnostic biomarker in RCC.
Acknowledgments: IGA MZCR No: NT/13860-4/2012, NT/13549-4/2012, NT/13547-4/2012, NT/13514-4/2012
Citation Format: Robert Iliev, Petra Vychytilova-Faltejskova, Jaroslav Juracek, Hana Mlcochova, Michal Stanik, Jan Dolezel, Michal Fedorko, Dalibor Pacik, Marek Svoboda, Ondrej Slaby. Piwi genes and tissue/serum piR-651 are related to clinicopathologic features of renal cell carcinoma. [abstract]. In: Proceedings of the 106th Annual Meeting of the American Association for Cancer Research; 2015 Apr 18-22; Philadelphia, PA. Philadelphia (PA): AACR; Cancer Res 2015;75(15 Suppl):Abstract nr 237. doi:10.1158/1538-7445.AM2015-237
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Affiliation(s)
- Robert Iliev
- 1Molecular Oncology II, CEITEC, Masaryk University, Brno, Czech Republic
| | | | - Jaroslav Juracek
- 2Masaryk Memorial Cancer Institute, Department of Comprehensive Cancer Care, Brno, Czech Republic
| | - Hana Mlcochova
- 1Molecular Oncology II, CEITEC, Masaryk University, Brno, Czech Republic
| | - Michal Stanik
- 3Masaryk Memorial Cancer Institute, Department of Urologic Oncology, Brno, Czech Republic
| | - Jan Dolezel
- 3Masaryk Memorial Cancer Institute, Department of Urologic Oncology, Brno, Czech Republic
| | - Michal Fedorko
- 4Faculty Hospital Brno, Department of Urology, Brno, Czech Republic
| | - Dalibor Pacik
- 4Faculty Hospital Brno, Department of Urology, Brno, Czech Republic
| | - Marek Svoboda
- 2Masaryk Memorial Cancer Institute, Department of Comprehensive Cancer Care, Brno, Czech Republic
| | - Ondrej Slaby
- 1Molecular Oncology II, CEITEC, Masaryk University, Brno, Czech Republic
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Hajek P, Pecen L, Bulejova L, Cook M, Dolezal T, Dolezel J, Duba J, Dukova I, Fuksa L, Heislerova M, Jaskova K, Karasek P, Klimes J, Kminek A, Kucera Z, Vesela Š, Vothova P, Svihovec J. Multicriteria Decision Analysis (MCDA) In HTA - Pilot Study in the Czech Republic. Value Health 2014; 17:A439. [PMID: 27201174 DOI: 10.1016/j.jval.2014.08.1143] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
- P Hajek
- Pfizer s r. o., Prague, Czech Republic
| | - L Pecen
- CEEOR s. r. o., Prague, Czech Republic
| | | | - M Cook
- BAYER s. r. o., Prague, Czech Republic
| | - T Dolezal
- VALUE OUTCOMES, Prague, Czech Republic
| | - J Dolezel
- GlaxoSmithKline, s. r. o., Prague, Czech Republic
| | - J Duba
- OAKS Consulting s. r. o., Prague 9, Czech Republic
| | | | - L Fuksa
- General Health Insurance Company of the Czech Republic, Praha, Czech Republic
| | - M Heislerova
- University Hospital in Motol, Prague, Czech Republic
| | | | - P Karasek
- Novartis s. r. o., Prague, Czech Republic
| | | | - A Kminek
- AstraZeneca, Prague, Czech Republic
| | - Z Kucera
- Sanofi-Aventis, Prague, Czech Republic
| | | | - P Vothova
- Pfizer s r. o., Prague, Czech Republic
| | - J Svihovec
- University Hospital in Motol, Prague, Czech Republic
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13
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Redova M, Poprach A, Besse A, Iliev R, Nekvindova J, Lakomy R, Radova L, Svoboda M, Dolezel J, Vyzula R, Slaby O. MiR-210 expression in tumor tissue and in vitro effects of its silencing in renal cell carcinoma. Tumour Biol 2012; 34:481-91. [PMID: 23150176 DOI: 10.1007/s13277-012-0573-2] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [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: 08/08/2012] [Accepted: 10/24/2012] [Indexed: 12/18/2022] Open
Abstract
Renal cell carcinoma (RCC) is the most common neoplasm of adult kidney accounting for about 3 % of adult malignancies. MicroRNAs (miRNAs) are a class of naturally occurring, short non-coding RNAs that regulate gene expression at the post-transcriptional level. We determined global miRNA expression profiles of RCC and parallel renal parenchyma tissues by using quantitative reverse transcriptase-polymerase chain reaction-based TaqMan low-density arrays. Afterward, we validated the difference in miR-210 expression levels on the larger group of RCC patients (35 RCC versus 10 non-tumorous parenchyma samples). Functional in vitro experiments were performed on ACHN and CAKI-2 RCC cell lines transfected with miRNA-210 inhibitor. Cell viability, apoptosis, cell cycle, scratch wound migration assay, and invasion assay (xCELLigence) were performed. We have identified original ccRCC-specific miRNA signature in clinical samples (73 miRNAs were significantly downregulated and five miRNAs upregulated (P < 0.003)). Increased expression levels of miR-210 in RCC tumor tissue were independently validated. We observed decreased viability of ACHN and CAKI-2 cells and accumulation of CAKI-2 in G2 phase of cell cycle after silencing of miR-210 expression. Downregulation of miR-210 also reduced the migratory and invasive potential of ACHN metastatic RCC cells. Moreover, we showed downregulation of HIF1a protein in both cell lines after miR-210 silencing indicating participation of miR-210 in hypoxic processes of RCC not only through regulation of its target mRNAs but also by indirect regulation of HIF1a. To our knowledge, this is the first report to show miR-210 regulatory effects on cell migration, invasive potential, and HIF1a protein in RCC cells.
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MESH Headings
- Adult
- Aged
- Aged, 80 and over
- Apoptosis
- Biomarkers, Tumor/genetics
- Biomarkers, Tumor/metabolism
- Carcinoma, Renal Cell/genetics
- Carcinoma, Renal Cell/metabolism
- Carcinoma, Renal Cell/pathology
- Cell Cycle
- Cell Cycle Checkpoints
- Cell Line, Tumor
- Cell Movement
- Down-Regulation
- Female
- Gene Expression Profiling
- Gene Expression Regulation, Neoplastic
- Gene Silencing
- Humans
- Hypoxia-Inducible Factor 1, alpha Subunit/metabolism
- Kidney Neoplasms/genetics
- Kidney Neoplasms/metabolism
- Kidney Neoplasms/pathology
- Male
- MicroRNAs/biosynthesis
- MicroRNAs/genetics
- Middle Aged
- Neoplasm Invasiveness
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
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Affiliation(s)
- Martina Redova
- Department of Comprehensive Cancer Care, Masaryk Memorial Cancer Institute, Zluty kopec 7, 656 53, Brno, Czech Republic
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14
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Kren L, Valkovsky I, Dolezel J, Capak I, Pacik D, Poprach A, Lakomy R, Redova M, Fabian P, Krenova Z, Slaby O. HLA-G and HLA-E specific mRNAs connote opposite prognostic significance in renal cell carcinoma. Diagn Pathol 2012; 7:58. [PMID: 22640987 PMCID: PMC3408319 DOI: 10.1186/1746-1596-7-58] [Citation(s) in RCA: 26] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2012] [Accepted: 05/29/2012] [Indexed: 01/23/2023] Open
Abstract
BACKGROUND Renal cell carcinoma (RCC) is characterized by its resistance to radiotherapy and/or chemotherapy. On the other hand, it is an immunogenic tumor - it is able to stimulate antitumor responses. A prognostic significance of HLA-G expression by neoplastic cells in RCC is not well characterized; significance HLA-E expression in RCC is not characterized at all. METHODS In our study, we evaluated the expression of HLA-G and HLA-E specific mRNA transcripts produced by neoplastic cells in 38 cases of RCC and in 10 samples of normal kidney parenchyma. The results were statistically correlated with various clinico-pathological parameters. RESULTS We confirmed that HLA-G is downregulated in normal kidney tissue; if it is up-regulated in RCC, then it is connected to worse prognosis. On the other hand, HLA-E mRNA transcripts were present in both normal kidney tissue and RCC and their increasing concentrations counterintuitively carried better prognosis, more favorable pT stage and lower nuclear Fuhrmann's grade. CONCLUSION Considering the fact that there is known aberrant activation of HLA-G and HLA-E expression by interferons, identification of HLA-G and HLA-E status could contribute to better selection of RCC patients who could possibly benefit from more tailored neoadjuvant biological/immunological therapy. Thus, these molecules could represent useful prognostic biomarkers in RCC, and the expression of both these molecules in RCC deserves further study. THE VIRTUAL: Slide(s) for this article can be found here: http://www.diagnosticpathology.diagnomx.eu/vs/7383071387016614.
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Affiliation(s)
- Leos Kren
- Department of Pathology, Faculty of Medicine, University Hospital Brno, Masaryk University, Jihlavska 20, Brno, 625 00, Czech Republic
| | - Ivo Valkovsky
- Faculty Hospital Ostrava, Clinic of Internal Medicine, Faculty of Medicine, University of Ostrava, Ostrava, Czech Republic
| | - Jan Dolezel
- Department of Oncological Urology, Masaryk Memorial Cancer Institute, Brno, Czech Republic
| | - Ivo Capak
- Department of Oncological Urology, Masaryk Memorial Cancer Institute, Brno, Czech Republic
| | - Dalibor Pacik
- Department of Urology, Faculty of Medicine, University Hospital Brno, Masaryk University, Brno, Czech Republic
| | - Alexandr Poprach
- Department of Comprehensive Cancer Care, Masaryk Memorial Cancer Institute, Brno, Czech Republic
| | - Radek Lakomy
- Department of Comprehensive Cancer Care, Masaryk Memorial Cancer Institute, Brno, Czech Republic
| | - Martina Redova
- Department of Comprehensive Cancer Care, Masaryk Memorial Cancer Institute, Brno, Czech Republic
- CEITEC - Central European Institute of Technology, Masaryk University, Brno, Czech Republic
| | - Pavel Fabian
- Department of Oncological and Experimental Pathology, Masaryk Memorial Cancer Institute, Brno, Czech Republic
| | - Zdenka Krenova
- Department of Childrens’ Oncology, Faculty of Medicine, University Hospital Brno, Masaryk University, Brno, Czech Republic
| | - Ondrej Slaby
- Department of Comprehensive Cancer Care, Masaryk Memorial Cancer Institute, Brno, Czech Republic
- CEITEC - Central European Institute of Technology, Masaryk University, Brno, Czech Republic
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Dolezel J, Jedlicka V, Pestál A, Szkorupa M, Vodicka J, Veselý K, Zvonícek V, Capov I. [Rates of metastatic affections of mediastinal nodes during pulmonary metastasectomy]. Rozhl Chir 2011; 90:653-655. [PMID: 22442878] [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: 05/31/2023]
Abstract
OBJECT The aim is the evaluation of lymph node metastasis rate during pulmonary metastasectomy harvested by technique of systematic mediastinal lymphadenectomy in year 2009-2010. METHODS We performed systematic mediastinal lymphadenectomy (the same technique as in non-small cell lung cancer) during pulmonary metastasectomy. RESULTS There was found lymph node metastasis in four cases from 70 patients. The rate of metastatic involved mediastinal lymph node 5.7% harvested during lung metastasectomy is on lower limit of published interval. We expected higher lymph node involvement in lung metastasis of colorectal origin.
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Affiliation(s)
- J Dolezel
- 1. Chirurgická klinika FN u sv. Anny v Brne.
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Capov I, Dolezel J, Vlcek P, Veverková L, Jedlicka V, Pestál A, Veselý M. [Is pneumonectomy justified in the management of lung metastases?]. Rozhl Chir 2011; 90:631-633. [PMID: 22442873] [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: 05/31/2023]
Abstract
The authors discuss about questions of possibility pneumonectomy in concept of lung metastasis therapy. They analysed in detail indications, surgery, complications, survival and factors of survival. The authors also introduce case report of one patient with pneumonectomy in your group of patients.
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Affiliation(s)
- I Capov
- 1. chirurgická klinika LF MU a FNUSA v Brne.
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17
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Veselý M, Jedlicka V, Pestál A, Dolezel J, Chovanec Z, Capov I. [Spontaneous pneumomediastinum--a case review]. Rozhl Chir 2011; 90:634-636. [PMID: 22442874] [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: 05/31/2023]
Abstract
The authors present in the following case review a patient with spontaneous pneumomediastinum which can be on of the causes of acute chest pain and it is necessary to think about it in the differential diagnosis of this condition.
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Affiliation(s)
- M Veselý
- I. Chirurgická klinika LF MU a FN u sv. Anny v Brne.
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18
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Opletalova V, Dolezel J, Kralova K, Pesko M, Kunes J, Jampilek J. Synthesis and characterization of (Z)-5-arylmethylidene-rhodanines with photosynthesis-inhibiting properties. Molecules 2011; 16:5207-27. [PMID: 21697777 PMCID: PMC6264177 DOI: 10.3390/molecules16065207] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2011] [Revised: 06/15/2011] [Accepted: 06/21/2011] [Indexed: 11/25/2022] Open
Abstract
A series of rhodanine derivatives was prepared. The synthetic approach, analytical and spectroscopic data of all synthesized compounds are presented. Lipophilicity of all the discussed rhodanine derivatives was analyzed using the RP-HPLC method. The compounds were tested for their ability to inhibit photosynthetic electron transport (PET) in spinach (Spinacia oleracea L.) chloroplasts and reduce chlorophyll content in freshwater alga Chlorella vulgaris. Structure-activity relationships between the chemical structure, physical properties and biological activities of the evaluated compounds are discussed. For majority of the tested compounds the lipophilicity of the compound and not electronic properties of the R1 substituent were decisive for PET-inhibiting activity. The most potent PET inhibitor was (5Z)-5-(4-bromobenzylidene)-2-thioxo-1,3-thiazolidin-4-one (IC50 = 3.0 μmol/L) and the highest antialgal activity was exhibited by (5Z)-5-(4-chlorobenzylidene)-2-thioxo-1,3-thiazolidin-4-one (IC50 = 1.3 μmol/L).
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Affiliation(s)
- Veronika Opletalova
- Department of Pharmaceutical Chemistry and Drug Control, Faculty of Pharmacy in Hradec Kralove, Charles University in Prague, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic
- Authors to whom correspondence should be addressed; E-Mail: (V.O.); (J.J.); Tel.: +420495067372 (V.O.); Tel.: +420776722508 (J.J.)
| | - Jan Dolezel
- Department of Pharmaceutical Chemistry and Drug Control, Faculty of Pharmacy in Hradec Kralove, Charles University in Prague, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic
| | - Katarina Kralova
- Institute of Chemistry, Faculty of Natural Sciences, Comenius University, Mlynska dolina Ch-2, 842 15 Bratislava, Slovakia
| | - Matus Pesko
- Department of Ecosozology and Physiotactics, Faculty of Natural Sciences, Comenius University, Mlynska dolina Ch-2, 84215 Bratislava, Slovakia
| | - Jiri Kunes
- Department of Inorganic and Organic Chemistry, Faculty of Pharmacy in Hradec Kralove, Charles University in Prague, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic
| | - Josef Jampilek
- Department of Chemical Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences, Palackeho 1/3, 612 42 Brno, Czech Republic
- Authors to whom correspondence should be addressed; E-Mail: (V.O.); (J.J.); Tel.: +420495067372 (V.O.); Tel.: +420776722508 (J.J.)
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19
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Mago R, Simkova H, Brown-Guedira G, Dreisigacker S, Breen J, Jin Y, Singh R, Appels R, Lagudah ES, Ellis J, Dolezel J, Spielmeyer W. An accurate DNA marker assay for stem rust resistance gene Sr2 in wheat. Theor Appl Genet 2011; 122:735-44. [PMID: 21060985 DOI: 10.1007/s00122-010-1482-7] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2010] [Accepted: 10/22/2010] [Indexed: 05/08/2023]
Abstract
The stem rust resistance gene Sr2 has provided broad-spectrum protection against stem rust (Puccinia graminis Pers. f. sp. tritici) since its wide spread deployment in wheat from the 1940s. Because Sr2 confers partial resistance which is difficult to select under field conditions, a DNA marker is desirable that accurately predicts Sr2 in diverse wheat germplasm. Using DNA sequence derived from the vicinity of the Sr2 locus, we developed a cleaved amplified polymorphic sequence (CAPS) marker that is associated with the presence or absence of the gene in 115 of 122 (95%) diverse wheat lines. The marker genotype predicted the absence of the gene in 100% of lines which were considered to lack Sr2. Discrepancies were observed in lines that were predicted to carry Sr2 but failed to show the CAPS marker. Given the high level of accuracy observed, the marker provides breeders with a selection tool for one of the most important disease resistance genes of wheat.
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Affiliation(s)
- R Mago
- CSIRO Plant Industry, Canberra, Australia
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20
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Safár J, Simková H, Kubaláková M, Cíhalíková J, Suchánková P, Bartos J, Dolezel J. Development of chromosome-specific BAC resources for genomics of bread wheat. Cytogenet Genome Res 2010; 129:211-23. [PMID: 20501977 DOI: 10.1159/000313072] [Citation(s) in RCA: 117] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
The large bread wheat genome (1C approximately 17 Gbp) contains a preponderance of repetitive DNA and the species is polyploid. These characteristics together serve to hamper the molecular analysis of the wheat genome. Its complexity can, however, be reduced by using flow cytometry to isolate individual chromosomes, and these can be exploited to construct chromosome-specific BAC libraries. Such libraries simplify the task of physical map construction, positional cloning and the targeted development of genetic markers. Rapid improvements in the efficiency and cost of DNA sequencing provide an opportunity to contemplate sequencing the wheat genome by preparing sequence-ready physical maps for each chromosome or chromosome arm in turn. The quality of the chromosome-specific libraries depends on their chromosome coverage and the mean insert size. First-generation libraries suffered from a relatively low mean insert size, but improvements to the protocol have generated a second wave of libraries with a significantly increased mean insert size and better chromosome coverage. Each chromosome (arm)-specific library is composed of a manageable number of clones, and so represents a practical tool in the area of wheat genomics.
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Affiliation(s)
- J Safár
- Laboratory of Molecular Cytogenetics and Cytometry, Institute of Experimental Botany, Olomouc, Czech Republic.
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Dolezel J, Hirsova P, Opletalova V, Dohnal J, Marcela V, Kunes J, Jampilek J. Rhodanineacetic acid derivatives as potential drugs: preparation, hydrophobic properties and antifungal activity of (5-arylalkylidene-4-oxo-2-thioxo-1,3-thiazolidin-3-yl)acetic acids. Molecules 2009; 14:4197-212. [PMID: 19924058 PMCID: PMC6255317 DOI: 10.3390/molecules14104197] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2009] [Revised: 10/09/2009] [Accepted: 10/19/2009] [Indexed: 12/01/2022] Open
Abstract
Some [(5Z)-(5-arylalkylidene-4-oxo-2-thioxo-1,3-thiazolidin-3-yl)]acetic acids were prepared as potential antifungal compounds. The general synthetic approach to all synthesized compounds is presented. Lipophilicity of all the discussed rhodanine-3-acetic acid derivatives was analyzed using a reversed phase high performance liquid chromatography (RP-HPLC) method. The procedure was performed under isocratic conditions with methanol as an organic modifier in the mobile phase using an end-capped non-polar C18 stationary RP column. The RP-HPLC retention parameter log k (the logarithm of the capacity factor k) is compared with log P values calculated in silico. All compounds were evaluated for antifungal effects against selected fungal species. Most compounds exhibited no interesting activity, and only {(5Z)-[4-oxo-5-(pyridin-2-ylmethylidene)-2-thioxo-1,3-thiazolidin-3-yl]}acetic acid strongly inhibited the growth of Candida tropicalis 156, Candida krusei E 28, Candida glabrata 20/I and Trichosporon asahii 1188.
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Affiliation(s)
- Jan Dolezel
- Department of Pharmaceutical Chemistry and Drug Control, Faculty of Pharmacy in Hradec Kralove, Charles University in Prague, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic; E-Mails: (V.O.); (J.D.); (P.H.)
| | - Petra Hirsova
- Department of Pharmaceutical Chemistry and Drug Control, Faculty of Pharmacy in Hradec Kralove, Charles University in Prague, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic; E-Mails: (V.O.); (J.D.); (P.H.)
| | - Veronika Opletalova
- Department of Pharmaceutical Chemistry and Drug Control, Faculty of Pharmacy in Hradec Kralove, Charles University in Prague, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic; E-Mails: (V.O.); (J.D.); (P.H.)
| | - Jiri Dohnal
- Zentiva k.s., U kabelovny 130, 102 37 Prague 10, Czech Republic; E-Mail: (J.D.)
- Department of Chemical Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences, Palackeho 1-3, 612 42 Brno, Czech Republic
| | - Vejsova Marcela
- Department of Clinical Microbiology, Charles University Medical School and Teaching Hospital, Sokolska 581, Hradec Kralove 500 05, Czech Republic; E-Mail: (M.V.)
| | - Jiri Kunes
- Department of Inorganic and Organic Chemistry, Faculty of Pharmacy in Hradec Kralove, Charles University in Prague, Heyrovskeho 1203, 500 05 Hradec Kralove, Czech Republic; E-Mail: (J.K.)
| | - Josef Jampilek
- Zentiva k.s., U kabelovny 130, 102 37 Prague 10, Czech Republic; E-Mail: (J.D.)
- Department of Chemical Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences, Palackeho 1-3, 612 42 Brno, Czech Republic
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +420267243695; Fax: +420272701331
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22
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Kopecký D, Bartos J, Zwierzykowski Z, Dolezel J. Chromosome pairing of individual genomes in tall fescue (Festuca arundinacea Schreb.), its progenitors, and hybrids with Italian ryegrass (Lolium multiflorum Lam.). Cytogenet Genome Res 2009; 124:170-8. [PMID: 19420930 DOI: 10.1159/000207525] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/09/2008] [Indexed: 11/19/2022] Open
Abstract
A diploid-like pairing system prevents meiotic irregularities and improves the efficiency of gamete production in allopolyploid species. While the nature of the system is known in some polyploid crops including wheat, little is known about the control of chromosome pairing in polyploid fescues (Festuca spp.). In this work we studied chromosome pairing in allohexaploid F. arundinacea, its progenitors F. pratensis and F. glaucescens, and two intergeneric hybrids Lolium multiflorum (2x) x F. arundinacea (6x) and L. multiflorum (4x) x F. glaucescens (4x). The use of genomic in situ hybridization (GISH) permitted the analysis of homoeologous chromosome pairing and recombination of different genomes involved. We detected a diploid-like pairing system in polyploid fescues F. arundinacea and F. glaucescens, the latter being one of the progenitors of F. arundinacea. The pairing control system was absent in the second progenitor F. pratensis. Detailed analysis of intergeneric hybrids confirmed the presumed haploinsufficiency of the fescue system, which resulted in homoeologous pairing between all component genomes. This indicates that introgression of any specific chromosome segment from one genome to another is possible in all genome combinations. Our results not only contribute to the quest to discover the nature of the system controlling chromosome pairing in polyploid fescues, but may also have serious implications for design of hybrid breeding schemes in forage grasses.
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Affiliation(s)
- D Kopecký
- Laboratory of Molecular Cytogenetics and Cytometry, Institute of Experimental Botany, Olomouc, Czech Republic.
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23
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Veselý M, Pestál A, Dolezel J, Jedlicka V, Capov I, Chovanec Z, Veverková L, Hermanová M. [Malignant mediastinal teratoma--a case review]. Rozhl Chir 2009; 88:222-224. [PMID: 19642337] [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: 05/28/2023]
Abstract
In this case report the authors present a case of mediastinal malignant teratoma of a 23 years old patient, who suddenly suffers form chest pain as the only symptom. During examination is a huge mediastinal tumor diagnosed. After histological diagnosis is a radical surgery performed. According to the definitive histology is an adjutant oncological treatment indicated. The aim of our report is to think always about the mediastinal tumors as one of the possible cause of thoracic pain.
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Affiliation(s)
- M Veselý
- I. Chirurgická klinika LF MU a FN U svaté Anny v Brnĕ.
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24
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Jedlicka V, Vlcek P, Veverková L, Dolezel J, Pestál A, Veselý M, Zák J, Capov I. [Open pleural window at treatment of the advanced thoracic empyema: 20 high-risk patients' treatment experience]. Rozhl Chir 2009; 88:229-234. [PMID: 19642339] [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: 05/28/2023]
Abstract
UNLABELLED The aim of the retrospective clinical study was the analysis of the 20 high-risk patients operated in our department within years 2000-2008 by the modified Eloesser procedure for the serious thoracic empyema. MATERIAL AND METHODS We have analyzed the data of the 17 men and 3 women. The most important objectives were the cause of the disease, type of procedure, perioperative mortality, length of stay and subsequent procedures. The underlying disease was the malignant intrathoracic disease in 40%, diabetes mellitus was found in 25%. The cause of empyema was pleuropneumonia in 45%, postresectional empyema occurred in 35%. RESULTS There were two perioperative deaths (10%), remaining patients were all dismissed in a stabilized condition the 22nd postoperative day at average. Six subsequent reconstructive procedures were performed. There was no early death for the postpneumonectomy empyema. CONCLUSION In case of the serious pleural empyema in a high-risk patient is the modified Eloesser procedure safe and life saving surgical operation. The timing of the procedure and correct indication for surgery are essential.
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Affiliation(s)
- V Jedlicka
- I. Chirurgická klinika LF MU a FN u sv. Anny v Brnĕ.
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25
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Dolezel J, Veverková L, Jedlicka V, Capov I, Szkorupa M, Vodicka J. [Mediastinal lymphadenectomy in surgery of pulmonary metastasis]. Rozhl Chir 2009; 88:259-261. [PMID: 19642344] [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: 05/28/2023]
Abstract
The effect of lymphadenectomy in pulmonary metastasectomy is unceratain. Good indication and right radicality of resection are to-days surgery possibilities to manage the best patient survival. Next possibility is performance of systematic mediastinal lymphdenecomy for currative effect and increasing of staging quality for indication of adjuvant therapy by metatatic lymphnode involvement. The answer about performance of mediastinal lyphadenectomy and its kind was seeked by authors in retrospective study in years 1999-2008. Hundred and six patient underwent pulmonary metastasectomy, 34% patients were of sarcomatous origin. Mediastinal lymhadenectomy was made in 31% patients. There were found the lyphnode involvement in five cases. The group of own patiens is non homogenous for exact conclusion of impact mediastinal lymphadenectomy on survival after pulmonary metastasectomy. The comparison of patient survival with diferent kind of lymphadenectomy isn't acceptable because sampling of lymphonodes may be false negative. For exact comparison of mediastinal lymphadenectomy importance is necessary to do systematic mediastinal lymphadenectomy in prospective multicentric study.
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Affiliation(s)
- J Dolezel
- I. Chirurgická klinika FN u sv. Anny v Brnĕ
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26
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Abstract
This is the first of a series of units discussing the application of cytometry to plant material. Techniques commonly used for mammalian nuclei evaluation need considerable modification to be successful with plant material. David Galbraith and his colleagues bring together many years of knowledge in plant cytometry. Their unit provides detailed protocols on measuring DNA content, ploidy, and cell cycle status of plant tissue using both conventional laser based instruments as well as arc lamp cytometers. This unit provides an excellent starting point for those interested in doing cytometry with plants.
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27
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Abstract
The use of flow cytometry for evaluation of plant chromosomes requires some specialized attention to preparation and instrumentation. This unit deals exclusively with plant cytogenetics and presents an outline of this area as well as methods for accumulation of cells in metaphase, preparation of chromosome suspensions, flow analysis and sorting of chromosomes, and processing of the sorted chromosomes. Each method is described in tremendous detail because in many aspects dealing with plant cells is quite different from dealing with mammalian cells. Supporting histograms are presented as well as a range of special hints on dealing with plant material and a discussion of the utility of sorted chromosomes for plant genome mapping.
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Affiliation(s)
- J Dolezel
- Institute of Experimental Botany, Olomouc, Czech Republic
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28
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Abstract
Grasses are the most important and widely cultivated crops. Among them, ryegrasses (Lolium spp.) and fescues (Festuca spp.) provide high quality fodder for livestock, are used for turf and amenity purposes, and play a fundamental role in environment protection. Species from the two genera display complementary agronomic characteristics and are often grown in mixtures. Breeding efforts to combine desired features in single entities culminated with the production of Festuca x Lolium hybrids. The so called Festuloliums enjoy a considerable commercial success with numerous cultivars registered all over the world. They are also very intriguing from a strictly cytogenetic point of view as the parental chromosomes recombine freely in hybrids. Until a decade ago this phenomenon was only known in general quantitative terms. The introduction of molecular cytogenetic tools such as FISH and GISH permitted detailed studies of intergeneric chromosome recombination and karyotyping of Festulolium cultivars. These tools were also invaluable in revealing the origin of polyploid fescues, and facilitated the development of chromosome substitution and introgression lines and physical mapping of traits of interest. Further progress in this area will require the development of a larger set of cytogenetic markers and high-resolution cytogenetic maps. It is expected that the Lolium-Festuca complex will continue providing opportunities for breeding superior grass cultivars and the complex will remain an attractive platform for fundamental research of the early steps of hybrid speciation and interaction of parental genomes, as well as the processes of chromosome pairing, elimination and recombination.
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Affiliation(s)
- D Kopecký
- Laboratory of Molecular Cytogenetics and Cytometry, Institute of Experimental Botany, Olomouc, Czech Republic.
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29
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Dolezel J, Jedlicka V, Capov I. [Robot-assisted pulmonary lobectomy--our first experiences]. Rozhl Chir 2008; 87:121-124. [PMID: 18459437] [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: 05/26/2023]
Abstract
The authors present their first experience and the results of robot-assisted pulmonary lobectomies. The paper reports on the placement of the working channels, auxiliary minithoracotomies, the patient's position, the positions of the four-arm body of the da Vinci robotic system, and particularly the technique of lobectomy. In our institution, 5 robot-assisted lobectomies were performed in two women and three men (aged 45, 52, and 57, 67, 54 years, respectively). The lower lobectomy was performed four times left and once right. The surgery was always supplemented with mediastinal lymphadenectomy. The vessels were ligated mechanically with the use of the robot. No serious complications were observed during the surgery or in the postoperative period. Robot-assisted lobectomy is a safe method of pulmonary resection in the early stages of bronchogenic carcinoma (Ia, Ib); it ensures a faster convalescence of the patient compared with open surgery.
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Affiliation(s)
- J Dolezel
- I. chirurgická klinika FN u sv. Anny v Brnĕ
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30
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Vlcek P, Capov I, Jedlicka V, Chalupník S, Korbicka J, Veverková L, Dolezel J, Jerábek J, Wechsler J. [Robotic procedures in the colorectal surgery]. Rozhl Chir 2008; 87:135-137. [PMID: 18459440] [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: 05/26/2023]
Abstract
PURPOSE The da Vinci surgical system (Intuitive Surgical, Sunnyvale, CA, USA) was developed specifically to compensate the technical limitations of laparoscopic instruments, such as two-dimensional vision, misalignment of hands and instruments, limited dexterity of instruments inside the patient, and fixed instrument tips. The da Vinci system provides a stable camera platform, three-dimensional imaging, excellent ergonomics, tremor elimination, ambidextrous capability, motion scaling, and instruments with multiple degrees of freedom. METHODS These advantages can be applied in the field of colorectal surgery, and that's why we are reporting 45 cases that underwent robotic colorectal surgery. We concluded that the da Vinci system may be useful in surgical procedures, such as splenic flexure takedown, dissection of the inferior mesenteric artery with identification of the nervous plexus, and dissection of a narrow pelvis. The major drawbacks of robotic systems are high cost, and a lack of tactile sensation and tensile feedback to the surgeon, who must depend on visual cues to estimate the tension exerted on tissue by the robotic arms. RESULTS In conclusion, robotic colorectal surgery can be performed safely and effectively, using the da Vinci surgical system, because this system has more dexterity and flexibility than conventional laparoscopic instruments. However, prospective randomized studies are necessary to evaluate the preservation of sexual and voiding function, as well as the oncological and functional (pelvic floor disorders) outcomes of this approach.
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Affiliation(s)
- P Vlcek
- I. chirurgická klinika FN u sv. Anny v Brnĕ.
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31
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Kopecky D, Allen DC, Duchoslav M, Dolezel J, Lukaszewski AJ. Condensation of rye chromatin in somatic interphase nuclei of Ph1 and ph1b wheat. Cytogenet Genome Res 2008; 119:263-7. [PMID: 18253040 DOI: 10.1159/000112072] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/17/2007] [Indexed: 11/19/2022] Open
Abstract
The Ph1 locus in hexaploid wheat (Triticum aestivum L.) enforces diploid-like behavior in the first metaphase of meiosis. To test the hypothesis that this chromosome pairing control is exercised by affecting the degree of chromatin condensation, the dispersion of rye chromatin in interphase nuclei in somatic tissues of wheat-rye chromosome translocations 1RS.1BL, 2RS.2BL, 2BS.2RL, 3RS.3DL and 5RS.5BL was compared in Ph1 and ph1b isogenic backgrounds. No significant differences in rye chromatin condensation that could be attributed to the Ph1 locus were detected. Regardless of the Ph1 status, each rye chromosome arm tested conformed to the general Rabl's orientation and occupied portions of the nuclei proportional to their length. Earlier observations that indicated the involvement of Ph1 locus in rye chromatin condensation in wheat could have been due either to specific loci on the studied 5RL rye arm that control the chromosome condensation process or to damage to the genetic system controlling chromatin condensation in the existing ph1b stocks of wheat. That damage might have been caused by homoeologous recombination and uneven disjunction of chromosomes from multivalents.
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Affiliation(s)
- D Kopecky
- Institute of Experimental Botany, Olomouc, Czech Republic
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32
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Hribová E, Dolezelová M, Town CD, Macas J, Dolezel J. Isolation and characterization of the highly repeated fraction of the banana genome. Cytogenet Genome Res 2008; 119:268-74. [PMID: 18253041 DOI: 10.1159/000112073] [Citation(s) in RCA: 14] [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] [Accepted: 08/14/2007] [Indexed: 01/04/2023] Open
Abstract
Although the nuclear genome of banana (Musa spp.) is relatively small (1C approximately 610 Mbp for M. acuminata), the results obtained from other sequenced genomes suggest that more than half of the banana genome may be composed of repetitive and non-coding DNA sequences. Knowledge of repetitive DNA can facilitate mapping of important traits, phylogenetic studies, BAC-based physical mapping, and genome sequencing/annotation. However, only a few repetitive DNA sequences have been characterized in banana. In this work, we used DNA reassociation kinetics to isolate the highly repeated fraction of the banana genome (M. acuminata 'Calcutta 4'). Two libraries, one prepared from Cot </=0.05 DNA (2,688 clones) and one from Cot </=0.1 sequences (4,608 clones), were constructed, and 614 DNA clones were chosen randomly for sequencing and further characterization. Dot-plot analysis revealed that 14% of the sequenced clones contained various semi-tandem and palindromic repeated sequences. 'BLAST' homology searches showed that, in addition to tandem repeats, the Cot libraries were composed mainly of different types of retrotransposons, the most frequent being the Ty3/gypsy type monkey retrotransposon. Selected sequences displaying tandem organization properties were mapped by PRimed IN Situ DNA labeling (PRINS) to the secondary constriction on metaphase chromosomes of M. acuminata 'Calcutta 4'. Southern hybridization with selected BAC clones carrying 45S rDNA confirmed the presence of the tandem repeats in the 45S rDNA unit. This work significantly expands the knowledge of the repetitive fraction of the Musa genome and organization of its chromosomes.
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Affiliation(s)
- E Hribová
- Laboratory of Molecular Cytogenetics and Cytometry, Institute of Experimental Botany, Olomouc, Czech Republic
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33
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Dolezel J, Vlcek P. Robot-assisted pulmonary lobectomy. BRATISL MED J 2008; 109:251-253. [PMID: 18700434] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The authors present their first experience and the results of robot-assisted pulmonary lobectomies. The paper reports on the placement of the working channels, auxiliary minithoracotomies, the patient's position, the positions of the four-arm body of the da Vinci robotic system, and particularly the technique of lobectomy. In our institution, 4 robot-assisted lobectomies were performed in two women and two men (aged 45, 52, and 57, 67 years, respectively). The vessels were ligated mechanically with the use of the robot. An auxiliary minithoracotomy of a length of 5 cm was performed in the fifth intercostal area posterolaterally. The lower lobectomy was performed three times left and once right. The surgery was always supplemented with mediastinal lymphadenectomy. No serious complications were observed during the surgery or in the postoperative period. Robot-assisted lobectomy is a safe method of pulmonary resection in the early stages of bronchogenic carcinoma (Ia, Ib); it ensures a faster convalescence of the patient compared with open surgery (Ref. 14).
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Affiliation(s)
- J Dolezel
- 1st Department of Surgery, St. Ann's University Hospital, Brno, Czech Republic
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34
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Jedlicka V, Dolezel J, Vlcek P, Pestál A, Veselý K, Bednarík O, Capov I. [Multiple lung metastasectomy for the poor differentiated metastatic synovial sarcoma]. Rozhl Chir 2007; 86:85-8. [PMID: 17436672] [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: 05/14/2023]
Abstract
OBJECTIVES Synovial sarcoma is the rare indication for the pulmonary metastasectomy due to its aggressive biologic behavior and early dissemination. The radical surgical approach in therapy of the multiple pulmonary metastases could improve quality of life and median survival in carefully selected patients. METHODS From the group of 7 patients with the lung metastases of the synovial sarcoma operated in our department during the last 5 years we are presenting the case of the 39 years old man with the previous history of the surgical removal of the synovial sarcoma near the cubital fossa one year before. Considering the lungs as the only organ involved, bilateral complete metastasectomy through muscle sparing vertical thoracotomies was done. There were 12 metastases from all lung lobes with the exception of the right middle lobe. Analysis of the pathologist showed biphasic metastatic synovial sarcoma with the high mitotic activity. The 6 cycles of the MAID regime succeeded. RESULTS Median survival of the whole group is 25 months, there are 3 patients alive. In the above mentioned patient 1 year after the metastasectomy PET-CT showed focus of the 4th left rib suspected to be malignant. Wide resection of the rib was done, but no malignancy was disclosed, there were only reparative changes. The patient has been tolerated the oncological treatment very well and 45 months after the lung metastasectomy there are no sings of a malignant disease. CONCLUSION Lung metastasectomy of the multiple lung metastases of the synovial sarcoma is of value despite of uncertain long-term prognosis. It is recommended to consider the metastasectomy even in low differentiated tumors. The prerequisite for the effective treatment is a complete resection.
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Affiliation(s)
- V Jedlicka
- I. Chirurgická klinika FN u sv. Anny a LF MU v Brne, Brno
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35
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Kopecký D, Loureiro J, Zwierzykowski Z, Ghesquière M, Dolezel J. Genome constitution and evolution in Lolium x Festuca hybrid cultivars (Festulolium). Theor Appl Genet 2006; 113:731-42. [PMID: 16832647 DOI: 10.1007/s00122-006-0341-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2006] [Accepted: 06/03/2006] [Indexed: 05/10/2023]
Abstract
Festulolium hybrids are being increasingly used worldwide as forage grasses. This is due to their superior agronomic characteristics, which combine yield performance of ryegrasses (Lolium multiflorum and L. perenne) and tolerance against abiotic stress of fescues (Festuca pratensis, F. arundinacea and F. arundinacea var. glaucescens). Despite the widespread use, only fragmentary information exists on their genomic constitution. We used genomic in situ hybridization (GISH) to analyze genomic constitution of over 600 plants from almost all commercially available cultivars of Festulolium. Our results revealed a surprisingly large range of variation in the proportions of parental genomes and in the extent of intergenomic recombination. Using fluorescence in situ hybridization (FISH) with probes for ribosomal DNA, we assessed the frequency of recombination and elimination of particular chromosomes and chromosome groups in three contrasting Festulolium cultivars. This study provides novel information that will aid in understanding the relationship between a genetic make-up and the phenotype of Festulolium hybrids. Our results indicate that GISH might be a useful tool to aid in Festulolium breeding and provide data for a more detailed description of registered cultivars.
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Affiliation(s)
- D Kopecký
- Laboratory of Molecular Cytogenetics and Cytometry, Institute of Experimental Botany, Sokolovská 6, 77200 Olomouc, Czech Republic.
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36
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Capov I, Wechsler J, Pavlik M, Jedlicka V, Vesely J, Zvonicek V, Hanak D, Tihon J, Pestal A, Kraus R, Dolezel J. Rare incidence of pulmonary gangrene--algorithm of the treatment. Magy Seb 2006; 59:32-5. [PMID: 16637388] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
The pulmonary gangrene is rare and serious disease. Our experience is based on the treatment of the 2 patients with pulmonary gangrene during the last twenty years. The first and lifesaving step in the treatment of sepsis is the early removal of the necrotic tissue. Next surgery succeeds usually after one week after initial treatment. Surgical treatment continues step by step, we do not advise providing of a major anatomical resection in the initial stage of the disease. This policy is effective in the treatment of this serious disease.
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Affiliation(s)
- I Capov
- 1st Department of Surgery, St. Anne's University Hospital, Brno, Czech Republic
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37
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Bartos J, Alkhimova O, Dolezelová M, De Langhe E, Dolezel J. Nuclear genome size and genomic distribution of ribosomal DNA in Musa and Ensete (Musaceae): taxonomic implications. Cytogenet Genome Res 2005; 109:50-7. [PMID: 15753558 DOI: 10.1159/000082381] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.0] [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: 10/29/2003] [Accepted: 02/05/2004] [Indexed: 11/19/2022] Open
Abstract
Nuclear DNA content and genomic distributions of 5S and 45S rDNA were examined in nineteen diploid accessions of the genus Musa representing its four sections Eumusa, Rhodochlamys, Callimusa and Australimusa, and in Ensete gilletii, which was the outgroup in this study. In the Eumusa (x = 11), 2C DNA content ranged from 1.130 to 1.377 pg, M. balbisiana having the lowest DNA content of all sections. M. beccarii (x = 9), a representative of Callimusa, had the highest 2C nuclear DNA content (1.561 pg). Species belonging to Rhodochlamys (x = 11) and Australimusa (x = 10) had 2C DNA contents ranging from 1.191 to 1.299 pg and from 1.435 to 1.547 pg, respectively. E. gilletii (x = 9) had 2C DNA content of 1.210 pg. The number of 5S rDNA loci in Musa varied from 4 to 8 per diploid cell. While different numbers of 5S rDNA loci were observed within Eumusa and Rhodochlamys, four 5S rDNA loci were observed in all accessions of Australimusa. M. beccarii (Callimusa) and E. gilletii contained 5S rRNA gene clusters on five and six chromosomes, respectively. The number of 45S rDNA loci was conserved within individual sections. Hierarchical cluster analysis of genome size, number of chromosomes and 45S rDNA sites suggested a close relationship between Rhodochlamys and Eumusa; Australimusa was clearly separated as were M. beccarii and E. gilletii. Within the Eumusa-Rhodochlamys group, M. balbisiana, M. schizocarpa and M. ornata formed distinct subgroups, clearly separated from the accessions of M. acuminata, M. mannii, M. laterita and M. velutina, which formed a tight subgroup. The results expand the knowledge of genome size and genomic distribution of ribosomal DNA in Musa and Ensete. They aid in clarification of the taxonomical classification of Musa and show a need to supplement the analyses on the DNA sequence level with cytogenetic studies.
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Affiliation(s)
- J Bartos
- Laboratory of Molecular Cytogenetics and Cytometry, Institute of Experimental Botany, Olomouc, Czech Republic
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Loureiro J, Pinto G, Lopes T, Dolezel J, Santos C. Assessment of ploidy stability of the somatic embryogenesis process in Quercus suber L. using flow cytometry. Planta 2005; 221:815-822. [PMID: 15744492 DOI: 10.1007/s00425-005-1492-x] [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] [Subscribe] [Scholar Register] [Received: 09/10/2004] [Accepted: 11/23/2004] [Indexed: 05/24/2023]
Abstract
Flow cytometry analyses were used to verify the ploidy stability of Quercus suber L. somatic embryogenesis process. Leaf explants of two adult cork oak trees (QsG0 and QsG5) of the North of Portugal were inoculated on MS medium with 2,4-D and zeatin. After 3 months, calluses with embryogenic structures were isolated and transferred to fresh MS medium without growth regulators and somatic embryo evolution was followed. Morphologically normal somatic embryos (with two cotyledons) and abnormal somatic embryos (with one or three cotyledons) were used in this assay. Flow cytometry combined with propidium iodide staining was employed to estimate DNA ploidy levels and nuclear DNA content of somatic embryos and leaves from mother plants. No significant differences (P< or =0.05) were detected among embryos, and between the embryos and the mother plants. Also, after conversion of these embryos, no significant morphological differences were observed among the somatic embryo-derived plants. These results and further studies using converted plantlet leaves and embryogenic callus tissue indicate that embryo cultures and converted plantlets were stable with regard to ploidy level. As no major somaclonal variation was detected our primary goal of "true-to-type" propagation of cork oak using somatic embryogenesis was assured at this level. The estimation of the 2C nuclear DNA content for this species is similar to the previously obtained value.
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Affiliation(s)
- J Loureiro
- Department of Biology, University of Aveiro, 3810-193, Aveiro, Portugal
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Strakova N, Ehrmann J, Bartos J, Malikova J, Dolezel J, Kolar Z. Peroxisome proliferator-activated receptors (PPAR) agonists affect cell viability, apoptosis and expression of cell cycle related proteins in cell lines of glial brain tumors. Neoplasma 2005; 52:126-36. [PMID: 15800711] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
The nuclear receptors PPARs (peroxisome proliferator-activated receptors) are transcription factors activated by specific ligands. PPARs play an important role in carcinogenesis, inflammation, atherosclerosis, lipid metabolism and diabetes. There is evidence that activation of PPARs by specific ligands is able to suppress the growth of different types of human cancer by mechanisms including the growth arrest, apoptosis and induction of differentiation, although the detailed signalling pathways have not been completely elucidated to date. The aim of our study was to determine whether synthetic ligands of PPARalpha and PPARgamma could affect the viability, proliferation, differentiation, apoptosis and expression of some cell cycle related proteins in glial tumor cell lines. The study was performed on human glioblastoma cell lines U-87 MG, T98G, A172 and U-118 MG. Cell lines were treated by ligands of PPARalpha (bezafibrate, gemfibrozil) and PPARgamma (ciglitazone). MTT, flow cytometry, TUNEL assay and immunoblotting were used for detection of changes in cell viability, proliferation, differentiation and apoptosis. Bezafibrate, ciglitazone and gemfibrozil inhibited viability of glioblastoma cell lines. The synthetic ligands significantly reduced or induced the expression of cyclins, p27Kip1, p21Waf1/Cip1, MDM-2, Bcl-2, Bax, PARP, Caspase 3, androgen receptors, etc. and did not affect the expression of the differentiation marker GFAP. Flow cytometry confirmed arrest of the cell cycle although the detection of apoptosis was controversial. Apart from hypolipidemic and hypoglycaemic effects, PPAR ligands may also have significant cytostatic effects of potential use in anticancer treatment.
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Affiliation(s)
- N Strakova
- Laboratory of Molecular Pathology, Faculty of Medicine, Palacky University, Olomouc, CZ 77515, Czech Republic
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Dolezel J, Sutorý M, Navrátil P. Antireflux Uretero-Intestinal Anastomosis—Flap-and-Trough Technique—Applicable to Ileum: Early Clinical Experience. Eur Urol 2004; 46:598-603. [PMID: 15474269 DOI: 10.1016/j.eururo.2004.06.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/25/2004] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To report our functional results of the "flap-and-trough" (FT) antireflux uretero-intestinal anastomosis (UIA) applied to various forms of urinary diversions. PATIENTS AND METHODS From April 1998 through March 2003, a total of 49 ureters were implanted in 28 patients into various types of urinary diversions. Forty-six ureters were implanted transluminally (32 separately, 14 conjointly by the double-barrelled method), 3 ureters extraluminally into preformed reservoirs during kidney transplantation. Forty-one ureters were implanted primarily, 8 ureters secondarily due to stricture of former UIA. RESULTS Median observation time was 26 months. The healing was uneventful in all cases. Late complications were not related to the UIA. Twenty-four patients could be evaluated. The upper urinary tract remained stable, no reflux and no stenosis at the site of UIA were detected. FT anastomoses were clearly seen and easily accessible at endoscopy. CONCLUSION In our hands the FT anastomosis has proved to be simple, safe and highly effective in terms of protecting the upper urinary tract against obstruction and reflux. Creation of antireflux UIA need not mean increased risk of obstruction in comparison with direct (reflux) ones. The FT technique could represent another alternative of nonrefluxing implantation of normal as well as dilated ureters into various types of urinary diversion.
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Affiliation(s)
- Jan Dolezel
- Institution of Traumatology, Brno, Masaryk University School of Medicine, Brno, Czech Republic.
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Kubaláková M, Valárik M, Barto J, Vrána J, Cíhalíková J, Molnár-Láng M, Dolezel J. Analysis and sorting of rye (Secale cereale L.) chromosomes using flow cytometry. Genome 2004; 46:893-905. [PMID: 14608406 DOI: 10.1139/g03-054] [Citation(s) in RCA: 96] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Procedures for chromosome analysis and sorting using flow cytometry (flow cytogenetics) were developed for rye (Secale cereale L.). Suspensions of intact chromosomes were prepared by mechanical homogenization of synchronized root tips after mild fixation with formaldehyde. Histograms of relative fluorescence intensity obtained after the analysis of DAPI-stained chromosomes (flow karyotypes) were characterized and the chromosome content of the DNA peaks was determined. Chromosome 1R could be discriminated on a flow karyotype of S. cereale 'Imperial'. The remaining rye chromosomes (2R-7R) could be discriminated and sorted from individual wheat-rye addition lines. The analysis of lines with reconstructed karyotypes demonstrated a possibility of sorting translocation chromosomes. Supernumerary B chromosomes could be sorted from an experimental rye population and from S. cereale 'Adams'. Flow-sorted chromosomes were identified by fluorescence in situ hybridization (FISH) with probes for various DNA repeats. Large numbers of chromosomes of a single type sorted onto microscopic slides facilitated detection of rarely occurring chromosome variants by FISH with specific probes. PCR with chromosome-specific primers confirmed the identity of sorted fractions and indicated suitability of sorted chromosomes for physical mapping. The possibility to sort large numbers of chromosomes opens a way for the construction of large-insert chromosome-specific DNA libraries in rye.
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Affiliation(s)
- M Kubaláková
- Laboratory of Molecular Cytogenetics and Cytometry, Institute of Experimental Botany, Olomouc, Czech Republic
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Román B, Satovic Z, Pozarkova D, Macas J, Dolezel J, Cubero JI, Torres AM. Development of a composite map in Vicia faba, breeding applications and future prospects. Theor Appl Genet 2004; 108:1079-88. [PMID: 15067394 DOI: 10.1007/s00122-003-1515-6] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2003] [Accepted: 09/30/2003] [Indexed: 05/20/2023]
Abstract
A composite map of the Vicia faba genome based on morphological markers, isozymes, RAPDs, seed protein genes and microsatellites was constructed. The map incorporates data from 11 F(2) families for a total of 654 individuals all sharing the common female parent Vf 6. The integrated map is arranged in 14 major linkage groups (five of which were located in specific chromosomes). These linkage groups include 192 loci and cover 1559 cM with an overall average marker interval of 8 cM. By joining data of a new F(2) population segregating for resistance to ascochyta, broomrape and others traits of agronomic interest, have been saturated new areas of the genome. The combination of trisomic segregation, linkage analysis among loci from different families with a recurrent parent, and the analysis of new physically located markers, has allowed the establishment of the present status of the V. faba map with a wide coverage. This map provides an efficient tool in breeding applications such as disease-resistance mapping, QTL analyses and marker-assisted selection.
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Affiliation(s)
- B Román
- Departamento de Mejora y Agronomia CIFA-Alameda del Obispo, Apdo 3092, 14080, Córdoba, Spain.
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Abstract
A novel high-resolution fluorescence in situ hybridisation (FISH) strategy, using super-stretched flow-sorted plant chromosomes as targets, is described. The technique that allows longitudinal extension of chromosomes of more than 100 times their original metaphase size is especially attractive for plant species with large chromosomes, whose pachytene chromosomes are generally too long and heterochromatin patterns too complex for FISH analysis. The protocol involves flow cytometric sorting of metaphase chromosomes, mild proteinase-K digestion of air-dried chromosomes on microscopic slides, followed by stretching with ethanol:acetic acid (3 : 1). Stretching ratios were assessed in a number of FISH experiments with super-stretched chromosomes from barley, wheat, rye and chickpea, hybridised with 45S and 5S ribosomal DNAs and the [GAA]n microsatellite, the [TTTAGGG]n telomeric repeat and a bacterial artificial chromosome (BAC) clone as probes. FISH signals on stretched chromosomes were brighter than those on the untreated control, resulting from better accessibility of the stretched chromatin and maximum observed sensitivity of 1 kbp. Spatial resolution of neighbouring loci was improved down to 70 kbp as compared to 5-10 Mbp after FISH on mitotic chromosomes, revealing details of adjacent DNA sequences hitherto not obtained with any other method. Stretched chromosomes are advantageous over extended DNA fibres from interphase nuclei as targets for FISH studies because they still retain chromosomal integrity. Although the method is confined to species for which chromosome flow sorting has been developed, it provides a unique system for controlling stretching degree of mitotic chromosomes and high-resolution bar-code FISH.
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Affiliation(s)
- M Valárik
- Laboratory of Molecular Cytogenetics and Cytometry, Institute of Experimental Botany, Olomouc, Czech Republic
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Dolezel J, Zak J, Karpisek Z, Wechsler J. Intraabdominal pressure after rectal resections. BRATISL MED J 2004; 105:382-4. [PMID: 15658580] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
The mean correlation curves of the intraabdominal pressure over time were evaluated by regression analysis (value 0.05) in both groups. The curves had a rising character in both groups, but in the control group the curve rose more steeply and reached a higher level than the curve of studied group. The onset of peristalsis, first flatus and stool took a shorter time in the studied group. (Tab. 1, Fig. 5, Ref. 5.)
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Affiliation(s)
- J Dolezel
- 1st Department of Surgery, St. Ann's University Hospital, Brno, Czech Republic.
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Jedlicka V, Capov I, Pestal A, Stasek T, Dolezel J. Videomediastinoscopy for the diagnosis of the diseases of the lung and mediastinum. Magy Seb 2003; 56:229-33. [PMID: 15119266] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Abstract
BACKGROUND The biopsy of the mediastinum by mediastinoscopy is established as the most accurate method especially in the lung cancer staging, but helps also in the diagnosis of various diseases of the lung and mediastinum. The videomediastinoscopic equipment offers more precise procedure and shorter learning curve in comparison with classical technique due to the sharing of the procedure with other (more experienced) surgeon. The aim of our work was to confirm the safety and reliability of the videomediastionoscopy in our department, where the use of the traditional technique was exceptional. METHODS Patients with expansion in the mediastinum (or enlargement of the mediastinal lymph nodes) of the unknown aetiology accessible by videomediastinoscopy according to CT were included. Standard videomediastinoscopic technique was used. The attempt to take biopsy of the mediastinal tumor and/or the lymph nodes in stations 1, 2, 4, 7 according the UICC regional lymph node mapping was done. RESULTS There were 126 patients operated by videomediastinoscopy between January 1998 and June 2003. There were 83 men with a mean age of 50.43 years (range 14 to 78 years) and 43 women with a mean age of 50.79 years (range 18 to 77 years). The diagnosis defined by explicit morphology was made in 95 cases (75.40%). In 25 cases (19.84%) the result of the biopsy was either normal lymphatic tissue or slight inflammatory changes. In three cases (2.38%) the pathologist expressed strong suspicion of the malignant disease, without clear morphology. In two cases (1.59%) all tissue samples were completely necrotic. No biopsy was done once (0.77%). There were four major groups of patients with positive histology: Patients with sarcoidosis, patients with metastases of the epithelial malignity to the mediastinal lymph nodes, patients with lymphoma and the group containing patients with a diagnosis of a low frequency (tuberculosis, sarcoma, Castleman's disease and others). No mortality was related to the procedure. We had one serious surgical complication: bleeding from the right innominate artery successfully treated by suture. CONCLUSION Videomediastinoscopy is a safe and accurate method with a short learning curve. The key point of the diagnostic success is a proper indication for the procedure. Videomediastinoscopic equipment and its use is to be recommend to each department of general thoracic surgery.
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Affiliation(s)
- V Jedlicka
- First Department of Surgery, St. Anna University Hospital, Pekarska 53, Brno 656 91, Czech Republic.
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Vlácilová K, Ohri D, Vrána J, Cíhalíková J, Kubaláková M, Kahl G, Dolezel J. Development of flow cytogenetics and physical genome mapping in chickpea (Cicer arietinum L.). Chromosome Res 2003; 10:695-706. [PMID: 12575797 DOI: 10.1023/a:1021584914931] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Procedures for flow cytometric analysis and sorting of mitotic chromosomes (flow cytogenetics) have been developed for chickpea (Cicer arietinum). Suspensions of intact chromosomes were prepared from root tips treated to achieve a high degree of metaphase synchrony. The optimal protocol consisted of a treatment of roots with 2 mmol/L hydroxyurea for 18 h, a 4.5-h recovery in hydroxyurea-free medium, 2 h incubation with 10 micromol/L oryzalin, and ice-water treatment overnight. This procedure resulted in an average metaphase index of 47%. Synchronized root tips were fixed in 2% formaldehyde for 20 min, and chromosome suspensions prepared by mechanical homogenization of fixed root tips. More than 4 x 10(5) morphologically intact chromosomes could be isolated from 15 root tips. Flow cytometric analysis of DAPI-stained chromosomes resulted in histograms of relative fluorescence intensity (flow karyotypes) containing eight peaks, representing individual chromosomes and/or groups of chromosomes with a similar relative DNA content. Five peaks could be assigned to individual chromosomes (A, B, C, G, H). The parity of sorted chromosome fractions was high, and chromosomes B and H could be sorted with 100% purity. PCR on flow-sorted chromosome fractions with primers for sequence-tagged microsatellite site (STMS) markers permitted assignment of the genetic linkage group LG8 to the smallest chickpea chromosome H. This study extends the number of legume species for which flow cytogenetics is available, and demonstrates the potential of flow cytogenetics for genome mapping in chickpea.
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Affiliation(s)
- K Vlácilová
- Laboratory of Molecular Cytogenetics and Cytometry, Institute of Experimental Botany, Sokolovská 6, CZ-77200 Olomouc, Czech Republic
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Dolezel J, Zak J, Rovny I. Significance of a prolonged postoperative bowel paralysis in complete dehiscence of laparotomy wound. BRATISL MED J 2003; 103:432-3. [PMID: 12585360] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
We performed 910 laparotomies in the years 1998-1999. Complete dehiscence of a laparotomy wound was observed in 18 cases. We compare the duration of postoperative bowel paralysis in patients with and without eventration. The statistical comparison of the two groups was performed with the Wilcoxon test, the level of significance was set to 5%. We have found that the duration of postoperative bowel paralysis was significantly longer in the group of patients with eventration. (Tab. 4, Ref. 5.).
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Affiliation(s)
- J Dolezel
- 1st Department of Surgery, St. Anna University Hospital, Brno, Czech Republic.
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Valárik M, Simková H, Hribová E, Safár J, Dolezelová M, Dolezel J. Isolation, characterization and chromosome localization of repetitive DNA sequences in bananas (Musa spp.). Chromosome Res 2003; 10:89-100. [PMID: 11993938 DOI: 10.1023/a:1014945730035] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Partial genomic DNA libraries were constructed in Musa acuminata and M. balbisiana and screened for clones carrying repeated sequences, and sequences carrying rDNA. Isolated clones were characterized in terms of copy number, genomic distribution in M. acuminata and M. balbisiana, and sequence similarity to known DNA sequences. Ribosomal RNA genes have been the most abundant sequences recovered. FISH with probes for DNA clones Radkal and Radka7, which carry different fragments of Musa 26S rDNA, and Radka14, for which no homology with known DNA sequences has been found, resulted in clear signals at secondary constrictions. Only one clone carrying 5S rDNA, named Radka2, has been recovered. All remaining DNA clones exhibited more or less pronounced clustering at centromeric regions. The study revealed small differences in genomic distribution of repetitive DNA sequences between M. acuminata and M. balbisiana, the only exception being the 5S rDNA where the two Musa clones under study differed in the number of sites. All repetitive sequences were more abundant in M. acuminata whose genome is about 12% larger than that of M. balbisiana. While, for some sequences, the differences in copy number between the species were relatively small, for some of them, e.g. Radka5, the difference was almost thirty-fold. These observations suggest that repetitive DNA sequences contribute to the difference in genome size between both species, albeit to different extents. Isolation and characterization of new repetitive DNA sequences improves the knowledge of long-range organization of chromosomes in
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Affiliation(s)
- M Valárik
- Laboratory of Molecular Cytogenetics and Cytometry, Institute of Experimental Botany, Olomouc, Czech Republic
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Roux N, Toloza A, Radecki Z, Zapata-Arias FJ, Dolezel J. Rapid detection of aneuploidy in Musa using flow cytometry. Plant Cell Rep 2003; 21:483-90. [PMID: 12789452 DOI: 10.1007/s00299-002-0512-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2002] [Revised: 08/01/2002] [Accepted: 10/28/2002] [Indexed: 05/20/2023]
Abstract
We report a procedure for the rapid and convenient detection of aneuploidy in triploid Musa using DNA flow cytometry. From a population of plants derived from gamma-irradiated shoot tips, plants were selected based on aberrant morphology and their chromosome numbers were counted. Aneuploids plants with chromosome numbers 2n=31 or 32 were found as well as the expected triploid plants (2n=3x=33). At the same time, the nuclear DNA content of all plants was measured using flow cytometry. The flow cytometric assay involved the use of nuclei isolated from chicken red blood cells (CRBC), which served as an internal reference standard. The relative DNA content of individual plants was expressed as a ratio of DNA content of CRBC and Musa (DNA index). In order to estimate the chromosome number using flow cytometry, the relative DNA content of plants with unknown ploidy was expressed as a percentage of the DNA content of triploid plants. The classification based on flow cytometry fully agreed with the results obtained by chromosome counting. The results indicated that flow cytometry is a convenient and rapid method for the detection of aneuploidy in Musa.
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Affiliation(s)
- N Roux
- Plant Breeding Unit, FAO/IAEA Agriculture and Biotechnology LaboratoryInternational Atomic Energy Agency Laboratories, 2444 Seibersdorf, Austria.
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