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Berg HF, Ju Z, Myrvold M, Fasmer KE, Halle MK, Hoivik EA, Westin SN, Trovik J, Haldorsen IS, Mills GB, Krakstad C, Werner HMJ. Development of prediction models for lymph node metastasis in endometrioid endometrial carcinoma. Br J Cancer 2020; 122:1014-1022. [PMID: 32037399 PMCID: PMC7109044 DOI: 10.1038/s41416-020-0745-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 01/08/2020] [Accepted: 01/15/2020] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND In endometrioid endometrial cancer (EEC), current clinical algorithms do not accurately predict patients with lymph node metastasis (LNM), leading to both under- and over-treatment. We aimed to develop models that integrate protein data with clinical information to identify patients requiring more aggressive surgery, including lymphadenectomy. METHODS Protein expression profiles were generated for 399 patients using reverse-phase protein array. Three generalised linear models were built on proteins and clinical information (model 1), also with magnetic resonance imaging included (model 2), and on proteins only (model 3), using a training set, and tested in independent sets. Gene expression data from the tumours were used for confirmatory testing. RESULTS LNM was predicted with area under the curve 0.72-0.89 and cyclin D1; fibronectin and grade were identified as important markers. High levels of fibronectin and cyclin D1 were associated with poor survival (p = 0.018), and with markers of tumour aggressiveness. Upregulation of both FN1 and CCND1 messenger RNA was related to cancer invasion and mesenchymal phenotype. CONCLUSIONS We demonstrate that data-driven prediction models, adding protein markers to clinical information, have potential to significantly improve preoperative identification of patients with LNM in EEC.
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Affiliation(s)
- Hege F Berg
- Centre for Cancer Biomarkers; Department of Clinical Science, University of Bergen, Bergen, Norway.
- Department of Obstetrics and Gynaecology, Haukeland University Hospital, Bergen, Norway.
| | - Zhenlin Ju
- Bioinformatics and Computational Biology, UT M.D. Anderson Cancer Center, Houston, TX, USA
| | - Madeleine Myrvold
- Centre for Cancer Biomarkers; Department of Clinical Science, University of Bergen, Bergen, Norway
- Department of Obstetrics and Gynaecology, Haukeland University Hospital, Bergen, Norway
| | - Kristine E Fasmer
- Section for Radiology, Department of Clinical Medicine, University of Bergen, Bergen, Norway
- Department of Radiology, Haukeland University Hospital, Bergen, Norway
| | - Mari K Halle
- Centre for Cancer Biomarkers; Department of Clinical Science, University of Bergen, Bergen, Norway
- Department of Obstetrics and Gynaecology, Haukeland University Hospital, Bergen, Norway
| | - Erling A Hoivik
- Centre for Cancer Biomarkers; Department of Clinical Science, University of Bergen, Bergen, Norway
- Department of Obstetrics and Gynaecology, Haukeland University Hospital, Bergen, Norway
| | - Shannon N Westin
- Department of Gynaecologic Oncology and Reproductive Medicine, UT M.D. Anderson Cancer Center, Houston, TX, USA
| | - Jone Trovik
- Centre for Cancer Biomarkers; Department of Clinical Science, University of Bergen, Bergen, Norway
- Department of Obstetrics and Gynaecology, Haukeland University Hospital, Bergen, Norway
| | - Ingfrid S Haldorsen
- Section for Radiology, Department of Clinical Medicine, University of Bergen, Bergen, Norway
- Department of Radiology, Haukeland University Hospital, Bergen, Norway
| | - Gordon B Mills
- Department of Cell, Development and Cancer Biology, Knight Cancer Institute, Oregon Health and Science University, Portland, OR, USA
| | - Camilla Krakstad
- Centre for Cancer Biomarkers; Department of Clinical Science, University of Bergen, Bergen, Norway
- Department of Obstetrics and Gynaecology, Haukeland University Hospital, Bergen, Norway
| | - Henrica M J Werner
- Centre for Cancer Biomarkers; Department of Clinical Science, University of Bergen, Bergen, Norway
- Department of Obstetrics and Gynaecology, Haukeland University Hospital, Bergen, Norway
- Department of Obstetrics and Gynecology, School for Oncology and Developmental Biology, Maastricht University Medical Centre, Maastricht, The Netherlands
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Gajdár J, Goněc T, Jampílek J, Brázdová M, Bábková Z, Fojta M, Barek J, Fischer J. Voltammetry of a Novel Antimycobacterial Agent 1-Hydroxy-N-(4-nitrophenyl)naphthalene-2-carboxamide in a Single Drop of a Solution. ELECTROANAL 2017. [DOI: 10.1002/elan.201700547] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Július Gajdár
- Charles University; Faculty of Science, Department of Analytical Chemistry, UNESCO Laboratory of Environmental Electrochemistry; Albertov 6 CZ-12843 Prague 2 Czech Republic
| | - Tomáš Goněc
- University of Veterinary and Pharmaceutical Sciences; Faculty of Pharmacy, Department of Chemical Drugs; Palackého 1/3 CZ-61242 Brno Czech Republic
| | - Josef Jampílek
- Comenius University; Faculty of Pharmacy; Department of Pharmaceutical Chemistry; Odbojárov 10 SK-83232 Bratislava Slovakia
| | - Marie Brázdová
- Institute of Biophysics of the Czech Academy of Sciences; Královopolská 135 CZ-61265 Brno Czech Republic
| | - Zuzana Bábková
- Institute of Biophysics of the Czech Academy of Sciences; Královopolská 135 CZ-61265 Brno Czech Republic
| | - Miroslav Fojta
- Institute of Biophysics of the Czech Academy of Sciences; Královopolská 135 CZ-61265 Brno Czech Republic
| | - Jiří Barek
- Charles University; Faculty of Science, Department of Analytical Chemistry, UNESCO Laboratory of Environmental Electrochemistry; Albertov 6 CZ-12843 Prague 2 Czech Republic
| | - Jan Fischer
- Charles University; Faculty of Science, Department of Analytical Chemistry, UNESCO Laboratory of Environmental Electrochemistry; Albertov 6 CZ-12843 Prague 2 Czech Republic
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Kim N, Choi Y, Jung S, Kim S. Effect of initial carbon sources on the performance of microbial fuel cells containing Proteus vulgaris. Biotechnol Bioeng 2000; 70:109-14. [PMID: 10940867 DOI: 10.1002/1097-0290(20001005)70:1<109::aid-bit11>3.0.co;2-m] [Citation(s) in RCA: 100] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Mediator-coupled microbial fuel cells containing Proteus vulgaris were constructed and the cell performance was tested. Fuel cell efficiency depended on the carbon source in the initial medium of the microorganism. Maltose and trehalose were not utilized substantially by P. vulgaris; however, their presence in the initial medium resulted in enhanced cell performance. In particular, galactose showed 63% coulombic efficiency in a biofuel cell after P. vulgaris was cultured in a trehalose-containing medium. This work demonstrates that optimum utilization of carbon sources by microorganisms, which leads to the maximization of fuel cell performance, is possible simply by adjusting initial carbon sources.
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Affiliation(s)
- N Kim
- Department of Microbial Engineering, Konkuk University, Seoul 143-701, Korea
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Gillès de Pélichy LD, Smith ET. Redox properties of mesophilic and hyperthermophilic rubredoxins as a function of pressure and temperature. Biochemistry 1999; 38:7874-80. [PMID: 10387028 DOI: 10.1021/bi990322j] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The formal equilibrium reduction potentials of recombinant electron transport protein, rubredoxin (MW = 7500 Da), from both the mesophilic Clostridium pasteurianum (Topt = 37 degrees C) and hyperthermophilic Pyrococcus furiosus (Topt = 95 degrees C) were recorded as a function of pressure and temperature. Measurements were made utilizing a specially designed stainless steel electrochemical cell that easily maintains pressures between 1 and 600 atm and a temperature-controlled cell that maintains temperatures between 4 and 100 degrees C. The reduction potential of P. furiosus rubredoxin was determined to be 31 mV at 25 degrees C and 1 atm, -93 mV at 95 degrees C and 1 atm, and 44 mV at 25 degrees C and 400 atm. Thus, the reduction potential of P. furiosus rubredoxin obtained under standard conditions is likely to be dramatically different from the reduction potential obtained under its normal operating conditions. Thermodynamic parameters associated with electron transfer were determined for both rubredoxins (for C. pasteurianum, DeltaV degrees = -27 mL/mol, DeltaS degrees = -36 cal K-1 mol-1, and DeltaH degrees = -10 kcal/mol, and for P. furiosus, DeltaV degrees = -31 mL/mol, DeltaS degrees = -41 cal K-1 mol-1, and DeltaH degrees = -13 kcal/mol) from its pressure- and temperature-reduction potential profiles. The thermodynamic parameters for electron transfer (DeltaV degrees, DeltaS degrees, and DeltaH degrees ) for both proteins were very similar, which is not surprising considering their structural similarities and sequence homology. Despite the fact that these two proteins exhibit dramatic differences in thermostability, it appears that structural changes that confer dramatic differences in thermostability do not significantly alter electron transfer reactivity. The experimental changes in reduction potential as a function of pressure and temperature were simulated using a continuum dielectric electrostatic model (DELPHI). A reasonable estimate of the protein dielectric constant (epsilonprotein) of 6 for both rubredoxins was determined from these simulations. A discussion is presented regarding the analysis of electrostatic interaction energies of biomolecules through pressure- and temperature-controlled electrochemical studies.
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