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Czyz A, Romejko-Jarosinska J, Szeremet A, Bogucka-Fedorczuk A, Majcherek M, Szymanski M, Walewski J, Wrobel T. AUTOLOGOUS STEM CELL TRANSPLANT WITH HIGH DOSE MELPHALAN PREPARATIVE REGIMEN IS SAFE AND EFFECTIVE FOR ELDERLY MULTIPLE MYELOMA PATIENTS IN THE ERA OF TRIPLE INDUCTION THERAPY. Hematol Oncol 2019. [DOI: 10.1002/hon.238_2631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- A. Czyz
- Department of Hematology and Bone Marrow Transplantation; Wroclaw Medical University; Wroclaw Poland
| | - J. Romejko-Jarosinska
- Department of Lymphoid Malignancies; Maria Sklodowska-Curie Institute-Oncology Center; Warszawa Poland
| | - A. Szeremet
- Department of Hematology and Bone Marrow Transplantation; Wroclaw Medical University; Wroclaw Poland
| | - A. Bogucka-Fedorczuk
- Department of Hematology and Bone Marrow Transplantation; Wroclaw Medical University; Wroclaw Poland
| | - M. Majcherek
- Department of Hematology and Bone Marrow Transplantation; Wroclaw Medical University; Wroclaw Poland
| | - M. Szymanski
- Department of Lymphoid Malignancies; Maria Sklodowska-Curie Institute-Oncology Center; Warszawa Poland
| | - J. Walewski
- Department of Lymphoid Malignancies; Maria Sklodowska-Curie Institute-Oncology Center; Warszawa Poland
| | - T. Wrobel
- Department of Lymphoid Malignancies; Maria Sklodowska-Curie Institute-Oncology Center; Warszawa Poland
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Czyz A, Lojko-Dankowska A, Rybka J, Wrobel T, Zaucha J, Subocz E, Balcerzak A, Kroll-Balcerzak R, Joks M, Komarnicki M. Brentuximab vedotin and bendamustine as salvage therapy for primary refractory or relapsed Hodgkin lymphoma: A multicentre experience of the Polish lymphoma research group. Hematol Oncol 2017. [DOI: 10.1002/hon.2439_60] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- A. Czyz
- Department of Hematology and Bone Marrow Transplantation; Poznan University of Medical Sciences; Poznan Poland
| | - A. Lojko-Dankowska
- Department of Hematology and Bone Marrow Transplantation; Poznan University of Medical Sciences; Poznan Poland
| | - J. Rybka
- Department of Hematology, Blood Neoplasms and Bone Marrow Transplantation; Wroclaw Medical University; Wroclaw Poland
| | - T. Wrobel
- Department of Hematology, Blood Neoplasms and Bone Marrow Transplantation; Wroclaw Medical University; Wroclaw Poland
| | - J.M. Zaucha
- Gdynia Oncology Center and Department of Oncological Propaedeutic; Medical University of Gdansk; Gdansk Poland
| | - E. Subocz
- Hematology Department; Military Institute of Medicine; Warszawa Poland
| | - A. Balcerzak
- Department of Hematology and Bone Marrow Transplantation; Poznan University of Medical Sciences; Poznan Poland
| | - R. Kroll-Balcerzak
- Department of Hematology and Bone Marrow Transplantation; Poznan University of Medical Sciences; Poznan Poland
| | - M. Joks
- Department of Hematology and Bone Marrow Transplantation; Poznan University of Medical Sciences; Poznan Poland
| | - M. Komarnicki
- Department of Hematology and Bone Marrow Transplantation; Poznan University of Medical Sciences; Poznan Poland
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Grajek S, Popiel M, Gil L, Breborowicz P, Lesiak M, Czepczynski R, Sawinski K, Straburzynska-Migaj E, Araszkiewicz A, Czyz A, Kozlowska-Skrzypczak M, Komarnicki M. Influence of bone marrow stem cells on left ventricle perfusion and ejection fraction in patients with acute myocardial infarction of anterior wall: randomized clinical trial: Impact of bone marrow stem cell intracoronary infusion on improvement of microcirculation. Eur Heart J 2009; 31:691-702. [DOI: 10.1093/eurheartj/ehp536] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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Czyz J, Dziadziuszko R, Knopinska-Posłuszny W, Hellmann A, Kachel L, Hołowiecki J, Czyz A, Komarnicki M, Osowiecki M, Walewski J, Jurczak W, Skotnicki A. Two autologous transplants in the treatment of patients with Hodgkin's lymphoma: Analysis of prognostic factors and comparison with a single procedure. Leuk Lymphoma 2009; 48:535-41. [PMID: 17454595 DOI: 10.1080/10428190601158621] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [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: 10/20/2022]
Abstract
We summarized registry data of the long term observation of 35 patients treated with two autologous transplants. Prognostic factors for overall survival (OS) and DFS were analyzed. The OS was compared with 105 patients from a single transplant group. Two factors were significant in univariate analysis of DFS after the second transplant: response to the first transplant (complete remission (CR) versus progressive disease (PD) p = 0.041) and the disease status at the time of the second autologous stem cell transplantation (ASCT) (CR versus partial remission (PR) p = 0.004; CR versus PD p = 0.0002). In the multivariate analysis only the last of the parameters remain significant (RR 2.30, p = 0.004, 95% CI; 1.30 - 4.04). In the analysis of OS, two factors were significant in univariate analysis: status of the disease at the first transplant (PR versus PD p = 0.008) and response to the first transplant (CR versus PD p = 0.025). None of those factors remained significant in a multivariate analysis. A probability of 5-year survival after the first transplant in patients treated with two transplants was 83% (95% CI; 70 - 97%). A tendency towards better survival was seen in patients treated with two transplants (p = 0.01). The trend toward better survival from the time of diagnosis is kept for those who entered CR or PR after standard chemotherapy (p = 0.097) but not for the whole group (p = 0.13).
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Affiliation(s)
- J Czyz
- Department of Pathology, Huddersfield Royal Infirmary, UK.
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5
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Nasilowska-Adamska B, Rzepecki P, Manko J, Czyz A, Markiewicz M, Federowicz I, Tomaszewska A, Piatkowska-Jakubas B, Wrzesien-Kus A, Bieniaszewska M, Duda D, Szydlo R, Halaburda K, Szczepinski A, Lange A, Hellman A, Robak T, Skotnicki A, Jedrzejczak WW, Walewski J, Holowiecki J, Komarnicki M, Dmoszynska A, Warzocha K, Marianska B. The influence of palifermin (Kepivance) on oral mucositis and acute graft versus host disease in patients with hematological diseases undergoing hematopoietic stem cell transplant. Bone Marrow Transplant 2007; 40:983-8. [PMID: 17846600 DOI: 10.1038/sj.bmt.1705846] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [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: 11/09/2022]
Abstract
In this multicenter study, we assessed the use of palifermin (recombinant human-keratinocyte growth factor 1) in the prevention of oral mucositis (OM) and acute GvHD (aGvHD) induced by a hematopoietic stem cell transplant (HSCT). Fifty-three patients with hematological diseases received three doses of palifermin (60 mug/kg once daily i.v.) pre- and post-conditioning regimens (total six doses). A retrospective control group of 53 transplant patients received no palifermin. There was a significant reduction in the incidence of OM of WHO (World Health Organization) grades 1-4 (58 vs 94%, P<0.001), 3-4 (13 vs 43%, P<0.001) and the median duration of OM (4 vs 9 days, P<0.001) in the palifermin group compared to the control group. The incidence of analgesics (32 vs 75.5%, P<0.001), opioid analgesics (24 vs 64%, P<0.001) and total parenteral nutrition (11 vs 45%, P<0.001) was also significantly reduced. The analysis of distribution of affected organs revealed that aGvHD was less prevalent in the palifermin group (P=0.036). There was no significant difference in the onset of any OM after HSCT, time to engraftment and length of hospitalization between groups. The drug was generally well tolerated and safe. Our results suggest that the use of palifermin reduces OM and probably aGvHD after HSCT, but a randomized trial is needed.
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Nasilowska-Adamska B, Rzepecki P, Manko J, Czyz A, Markiewicz M, Fedorowicz I, Tomaszewska A, Piatkowska-Jakubas B, Wrzesien-Kus A, Bieniaszewska M, Duda D, Halaburda K, Szczepinski A, Lange A, Hellman A, Robak T, Skotnicki A, Jedrzejczak W, Walewski J, Holowiecki J, Komarnicki M, Dmoszynska A, Warzocha K, Marianska B. 211: The significance of palifermin (Kepivance®) in reduction of oral mucositis (OM) incidence and acute graft versus host disease in patients with hematologic malignancies undergoing hematopoietic stem cell transplantation (HSCT). Biol Blood Marrow Transplant 2007. [DOI: 10.1016/j.bbmt.2006.12.215] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Abstract
One of the most important and serious ecological problems is mutagenic pollution of the natural environment. Therefore, detection of mutagenic compounds in samples taken from natural habitats is of special interest. Microbiological mutagenicity tests seem to be very useful tools for such detection. In this review article, a general view on the tests employing genetically modified bacterial strains designed for detection of low concentrations of mutagenic compounds is presented. Moreover, a comparison of advantages and disadvantages of selected assays, developed early on and more recently, and features of these assays are discussed. It appears that none of the currently available mutagenicity tests is perfect or optimal for all purposes. Thus, a choice for the particular assay must depend on the nature of studies and specific tasks of the experiments to be performed.
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Affiliation(s)
- G Wegrzyn
- Department of Molecular Biology, University of Gdańsk, Kładki, Gdańsk, Poland.
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8
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Gabig-Ciminska M, Holmgren A, Andresen H, Bundvig Barken K, Wümpelmann M, Albers J, Hintsche R, Breitenstein A, Neubauer P, Los M, Czyz A, Wegrzyn G, Silfversparre G, Jürgen B, Schweder T, Enfors SO. Electric chips for rapid detection and quantification of nucleic acids. Biosens Bioelectron 2004; 19:537-46. [PMID: 14683637 DOI: 10.1016/s0956-5663(03)00273-2] [Citation(s) in RCA: 60] [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] [Indexed: 10/27/2022]
Abstract
A silicon chip-based electric detector coupled to bead-based sandwich hybridization (BBSH) is presented as an approach to perform rapid analysis of specific nucleic acids. A microfluidic platform incorporating paramagnetic beads with immobilized capture probes is used for the bio-recognition steps. The protocol involves simultaneous sandwich hybridization of a single-stranded nucleic acid target with the capture probe on the beads and with a detection probe in the reaction solution, followed by enzyme labeling of the detection probe, enzymatic reaction, and finally, potentiometric measurement of the enzyme product at the chip surface. Anti-DIG-alkaline phosphatase conjugate was used for the enzyme labeling of the DIG-labeled detection probe. p-Aminophenol phosphate (pAPP) was used as a substrate. The enzyme reaction product, p-aminophenol (pAP), is oxidized at the anode of the chip to quinoneimine that is reduced back to pAP at the cathode. The cycling oxidation and reduction of these compounds result in a current producing a characteristic signal that can be related to the concentration of the analyte. The performance of the different steps in the assay was characterized using in vitro synthesized RNA oligonucleotides and then the instrument was used for analysis of 16S rRNA in Escherichia coli extract. The assay time depends on the sensitivity required. Artificial RNA target and 16S rRNA, in amounts ranging from 10(11) to 10(10) molecules, were assayed within 25 min and 4 h, respectively.
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Affiliation(s)
- M Gabig-Ciminska
- Department of Biotechnology, Royal Institute of Technology (KTH), S-10691, Stockholm, Sweden.
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9
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Czyz A, Kowalska W, Wegrzyn G. Vibrio harveyi mutagenicity assay as a preliminary test for detection of mutagenic pollution of marine water. Bull Environ Contam Toxicol 2003; 70:1065-1070. [PMID: 12756442 DOI: 10.1007/s00128-003-0091-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Affiliation(s)
- A Czyz
- Laboratory of Molecular Biology (University of Gdańsk), Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Kładki 24, 80-822 Gdańsk, Poland
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10
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Czyz A, Wegrzyn G. [Mechanism, regulation and role of bacterial bioluminescence]. Postepy Biochem 2002; 47:263-70. [PMID: 11908095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Affiliation(s)
- A Czyz
- Pracownia Biologii Molekularnej afiliowana przy Uniwersytecie Gdańskim, Instytut Biochemii i Biofizyki Polskiej Akademii Nauk, ul. Kładki 24, 80-822 Gdańsk
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11
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Czyz A, Zielke R, Wegrzyn G. Rapid degradation of bacteriophage lambda O protein by ClpP/ClpX protease influences the lysis-versus-lysogenization decision of the phage under certain growth conditions of the host cells. Arch Virol 2001; 146:1487-98. [PMID: 11676412 DOI: 10.1007/s007050170073] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [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: 10/27/2022]
Abstract
The initiator of bacteriophage lambda DNA replication, the O protein, is rapidly degraded in Escherichia coli by the ClpP/ClpX protease encoded by the host. Although the biochemical mechanism of this degradation has been investigated intensively, a physiological role for this process remained unknown since little effect of dysfunction of clpP and clpX genes on the lytic development of the phage was observed. Here we demonstrate that activities of clpP and clpX genes influence the lysis-versus-lysogenization decision of bacteriophage lambda under certain growth conditions of the host cells. This decision is influenced specifically by ClpP/ClpX-mediated O degradation and resultant inhibition of early lambda DNA replication because mutations in clpP and clpX genes have little effect on stability of other lambda proteins involved in the regulation of the phage developmental switch.
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Affiliation(s)
- A Czyz
- Laboratory of Molecular Biology, Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Gdańsk
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12
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Czyz A, Zielke R, Konopa G, Wegrzyn G. A Vibrio harveyi insertional mutant in the cgtA (obg, yhbZ) gene, whose homologues are present in diverse organisms ranging from bacteria to humans and are essential genes in many bacterial species. Microbiology (Reading) 2001; 147:183-91. [PMID: 11160812 DOI: 10.1099/00221287-147-1-183] [Citation(s) in RCA: 21] [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] [Indexed: 11/18/2022]
Abstract
The cgtA gene product is a member of the subfamily of small GTP-binding proteins that have been identified in diverse organisms ranging from bacteria to humans. In bacteria that sporulate or display another special developmental programme, this gene (referred to as cgtA, obg or yhbZ) appears to be involved in the regulation of these processes. However, this gene has also been found to be essential in all bacterial species investigated to date, although its role in bacteria that do not sporulate and do not undergo a specific development remains unknown. Here the authors characterize a Vibrio harveyi mutant bearing a transposon insertion into the cgtA gene. This mutant reveals a multiple phenotype: it grows more slowly than the wild-type strain in a rich medium; its growth is completely inhibited in minimal media; its survival in 3% NaCl is dramatically reduced; it is very sensitive to UV irradiation; it is more susceptible to mutation upon treatment with different mutagens; its luminescence is decreased; its quorum-sensing regulation is less effective than in the wild-type strain; and the elongated shape of the mutant cells may suggest problems with the regulation of cell division and/or DNA replication. These defects in diverse cellular processes found in the insertional cgtA mutant of V. harveyi indicate that in a bacterium that does not sporulate and does not display other special development programmes, the CgtA protein is involved in the regulation of many crucial biochemical reactions, possibly at the stage of signal transduction.
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Affiliation(s)
- A Czyz
- Laboratory of Molecular Biology (affiliated with the University of Gdansk), Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Kladki 24, 80-822 Gdansk, Poland
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Wegrzyn A, Czyz A, Gabig M, Wegrzyn G. ClpP/ClpX-mediated degradation of the bacteriophage lambda O protein and regulation of lambda phage and lambda plasmid replication. Arch Microbiol 2000; 174:89-96. [PMID: 10985747 DOI: 10.1007/s002030000177] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [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: 11/28/2022]
Abstract
The O protein is a replication initiator that binds to the orilambda region and promotes assembly of the bacteriophage lambda replication complex. This protein, although protected from proteases by other elements of the replication complex, in a free form is rapidly degraded in the host, Escherichia coli, by the ClpP/ClpX protease. Nevertheless, the physiological role of this rapid degradation remains unclear. Here we demonstrate that the copy number of plasmids derived from bacteriophage lambda is significantly higher in wild-type cells growing in rich media than in slowly growing bacteria. However, lambda plasmid copy number in bacteria devoid of the ClpP/ClpX protease was not dependent on the bacterial growth rate and in all minimal media tested was comparable to that observed in wildtype cells growing in a rich medium. Contrary to lambda plasmid replication, the efficiency of lytic growth of bacteriophage lambda was found to be dependent on the host growth rate in both wild-type bacteria and clpP and clpX mutants. The activities of two major lambda promoters operating during the lytic development, p(R) and p(L), were found to be slightly dependent on the host growth rate. However, when p(R) activity was significantly decreased in the dnaA mutant, production of phage progeny was completely abolished at low growth rates. These results indicate that the O protein (whose level in E. coli cells depends on the activity of ClpP/ClpX protease) is a major limiting factor in the regulation of lambda plasmid replication at low bacterial growth rates. However, this protein seems to be only one of the limiting factors in the bacteriophage lambda lytic development under poor growth conditions of host cells. Therefore, it seems that the role of the rapid ClpP/ClpX-mediated proteolysis of the O protein is to decrease the efficiency of early DNA replication of the phage in slowly growing host cells.
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Affiliation(s)
- A Wegrzyn
- Laboratory of Molecular Biology, Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Gdańsk, Poland
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14
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Czyz A, Jasiecki J, Bogdan A, Szpilewska H, Wegrzyn G. Genetically modified Vibrio harveyi strains as potential bioindicators of mutagenic pollution of marine environments. Appl Environ Microbiol 2000; 66:599-605. [PMID: 10653723 PMCID: PMC91868 DOI: 10.1128/aem.66.2.599-605.2000] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
For biodetection of mutagenic pollution of marine environments, an organism naturally occurring in these habitats should be used. We found that marine bacterium Vibrio harveyi may be an appropriate bioindicator of mutagenic pollution. For positive selection of mutants, we developed a simple method for isolation of V. harveyi mutants resistant to neomycin. We constructed genetically modified V. harveyi strains that produce significantly more neomycin-resistant mutants upon treatment with low concentrations of mutagens than the wild-type counterpart. The sensitivity of the mutagenicity test with the V. harveyi strains is at least comparable to (if not higher than) that of the commonly used Ames test, which uses Salmonella enterica serovar Typhimurium strains. Therefore, we consider that the V. harveyi strains described in this report could be used as potential bioindicators of mutagenic pollution of marine environments.
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Affiliation(s)
- A Czyz
- Department of Molecular Biology, University of Gdańsk, Poland
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15
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Wojtczak L, Teplova VV, Bogucka K, Czyz A, Makowska A, Wieckowski MR, Duszyński J, Evtodienko YV. Effect of glucose and deoxyglucose on the redistribution of calcium in ehrlich ascites tumour and Zajdela hepatoma cells and its consequences for mitochondrial energetics. Further arguments for the role of Ca(2+) in the mechanism of the crabtree effect. Eur J Biochem 1999; 263:495-501. [PMID: 10406959 DOI: 10.1046/j.1432-1327.1999.00522.x] [Citation(s) in RCA: 42] [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] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The distribution of Ca(2+) in intact cells was monitored with fluorescent probes: fura-2 for cytosolic [Ca(2+)] and rhod-2 for mitochondrial [Ca(2+)]. It was found that in neoplastic cells, such as Ehrlich ascites tumour and Zajdela hepatoma, but not in non-malignant cells, such as fibroblasts, glucose and deoxyglucose elicited release of Ca(2+) from endoplasmic reticulum stores and an increase in Ca(2+) concentration in the cytosol. Parallel to this, a decrease in the rate of Ca(2+) extrusion from the cell and an enhanced uptake of Ca(2+) by mitochondria were observed. The increase in mitochondrial [Ca(2+)] was accompanied by an increase in the mitochondrial membrane potential and the reduction state of nicotinamide nucleotides. F(1)F(o)-ATPase in submitochondrial particles of Zajdela hepatoma was strongly inhibited in the presence of micromolar Ca(2+) concentrations, whereas this activity in submitochondrial particles from rat liver appeared to be less sensitive to Ca(2+). Indications of glycosylation of Ehrlich ascites tumour cell proteins were also obtained. These data strengthen the proposal [Bogucka, K., Teplova, V.V., Wojtczak, L. and Evtodienko, Y. V. (1995) Biochim. Biophys. Acta 1228, 261-266] that the Crabtree effect is produced by mobilization of cell calcium, which is subsequently taken up by mitochondria and inhibits F(1)F(o)-ATP synthase.
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Affiliation(s)
- L Wojtczak
- Nencki Institute of Experimental Biology, Warsaw, Poland Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, Russian Federation.
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16
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Kuchanny D, Klein G, Krzewska J, Czyz A, Lipińska B. Cloning of the groE operon of the marine bacterium Vibrio harveyi using a lambda vector. Acta Biochim Pol 1998; 45:261-70. [PMID: 9701519] [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: 02/08/2023]
Abstract
groES and groEL genes encode two co-operating proteins GroES and GroEL, belonging to a class of chaperone proteins highly conserved during evolution. The GroE chaperones are indispensable for the growth of bacteriophage lambda in Escherichia coli cells. In order to clone the groEL and groES genes of the marine bacterium Vibrio harveyi, we constructed the V. harveyi genomic library in the lambdaEMBL1 vector, and selected clones which were able to complement mutations in both groE genes of E. coli for bacteriophage lambda growth. Using Southern hybridization, in one of these clones we identified a DNA fragment homologous to the E. coli groE region. Analysis of the nucleotide sequence of this fragment showed that the cloned region contained a sequence in 71.7% homologous to the 3' end of the groEL gene of E. coli. This confirmed that the lambda clone indeed carries the groE region of V. harveyi. The positive result of our strategy of cloning with the use of the genomic library in lambda vector suggests that the same method might be useful in the isolation of the groE homologues from other bacteria. The V. harveyi cloned groE genes did not suppress thermosensitivity of the E. coli groE mutants.
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Affiliation(s)
- D Kuchanny
- Department of Biochemistry, University of Gdańsk, Poland
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17
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Kuchanny D, Klein G, Krzewska J, Czyz A, Lipińska B. Cloning of the groE operon of the marine bacterium Vibrio harveyi using a lambda vector. Acta Biochim Pol 1998. [DOI: 10.18388/abp.1998_4341] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
groES and groEL genes encode two co-operating proteins GroES and GroEL, belonging to a class of chaperone proteins highly conserved during evolution. The GroE chaperones are indispensable for the growth of bacteriophage lambda in Escherichia coli cells. In order to clone the groEL and groES genes of the marine bacterium Vibrio harveyi, we constructed the V. harveyi genomic library in the lambdaEMBL1 vector, and selected clones which were able to complement mutations in both groE genes of E. coli for bacteriophage lambda growth. Using Southern hybridization, in one of these clones we identified a DNA fragment homologous to the E. coli groE region. Analysis of the nucleotide sequence of this fragment showed that the cloned region contained a sequence in 71.7% homologous to the 3' end of the groEL gene of E. coli. This confirmed that the lambda clone indeed carries the groE region of V. harveyi. The positive result of our strategy of cloning with the use of the genomic library in lambda vector suggests that the same method might be useful in the isolation of the groE homologues from other bacteria. The V. harveyi cloned groE genes did not suppress thermosensitivity of the E. coli groE mutants.
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18
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Szewczyk A, Czyz A, Nałecz MJ. ATP-regulated potassium channel blocker, glibenclamide, uncouples mitochondria. Pol J Pharmacol 1997; 49:49-52. [PMID: 9431552] [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: 02/05/2023]
Abstract
The purpose of the present study was to investigate the effect exerted by the antidiabetic sulfonylurea, glibenclamide, a well known blocker of ATP-regulated potassium channels, on membrane potential and proton gradient in rat liver mitochondria. Membrane potential of mitochondria was determined using a TPP+ selective electrode. Mitochondrial proton gradient value was measured with 2',7',bis(carboxyethyl)-5,6-carboxyfluorescein, the pH-sensitive fluorescent probe. Mitochondrial membrane potential and proton gradient were found to be dissipated by glibenclamide in a concentration-dependent manner, with IC50 of 70 +/- 7 microM. The present results provide evidence that the antidiabetic sulfonylurea, glibenclamide, uncouples rat liver mitochondria.
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Affiliation(s)
- A Szewczyk
- Department of Muscle Biochemistry, Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warszawa, Poland
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Wojtczak L, Nikitina ER, Czyz A, Skulskii IA. Cuprous ions activate glibenclamide-sensitive potassium channel in liver mitochondria. Biochem Biophys Res Commun 1996; 223:468-73. [PMID: 8670305 DOI: 10.1006/bbrc.1996.0917] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [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: 02/01/2023]
Abstract
Cuprous ions at micromolar concentrations induced swelling of rat liver mitochondria in isotonic solutions of potassium thiocyanate and potassium acetate. The swelling in K-acetate in the presence of the protonophore [corrected] carbonyl cyanide m-chloropenylhydrazone was partly inhibited by glibenclamide. In K(+)-containing media, Cu+ collapsed the mitochondrial membrane potential formed by operation of the respiratory chain with succinate or tetramethyl p-phenylenediamine + ascorbate as substrates or by the proton-pumping ATPase. In contrast, in K(+)-free media, isotonic sucrose or choline chloride, but not in NaC1, Cu+ induced a transient potassium gradient potential. These results indicate that cuprous ions at low concentrations, apart from promoting the electroneutral K+/H+ exchange, facilitate the uniport of K+, presumably by activating the mitochondrial potassium channel sensitive to glibenclamide.
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Affiliation(s)
- L Wojtczak
- Nencki Institute of Experimental Biology, Warsaw, Poland.
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Abstract
Mitochondria from several tissues contain a potassium-specific channel similar to the ATP-regulated K+ (K ATP) channel of the plasma membrane. The mitochondrial channel shares with the plasma membrane K ATP channel the sensitivity to sulfonylurea derivatives and some other blockers as well as to channel openers of diverse chemical character. In contrast to the plasma membrane channel, which is blocked by free ATP, the mitochondrial K ATP channel reconstituted into liposomes requires the ATP-Mg complex for inhibition. The mitochondrial K ATP channel, possibly in a concerted action with other K+ permeability pathways, plays an important role in mitochondrial volume control. Its function in the regulation of the components of the protonmotive force is also suggested.
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Affiliation(s)
- A Szewczyk
- Nencki Institute of Experimental Biology, Poland
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Czyz A, Szewczyk A, Nałecz MJ, Wojtczak L. The role of mitochondrial potassium fluxes in controlling the protonmotive force in energized mitochondria. Biochem Biophys Res Commun 1995; 210:98-104. [PMID: 7741755 DOI: 10.1006/bbrc.1995.1632] [Citation(s) in RCA: 38] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The two components of the protonmotive force, the pH gradient (delta pH) and the transmembrane electric potential (delta psi), were measured in rat liver mitochondria as a function of K+ concentration in the suspending medium. It was found that both the rate of formation and the final level of delta pH upon energization of mitochondria with succinate increased with increasing [K+]. Concomitantly, delta psi decreased so that the level of the protonmotive force remained practically unchanged. Potassium channel opener RP66471 further potentiated both the formation rate and the level of delta pH. These results are interpreted as showing that the electrophoretic K+ influx enables the formation of delta pH by partly compensating charge transfer due to the proton pumping.
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Affiliation(s)
- A Czyz
- Nencki Institute of Experimental Biology, Warsaw, Poland
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Czyz A, Teplova VV, Sabała P, Czarny M, Evtodienko YV, Wojtczak L. Effect of glucose and deoxyglucose on cytoplasmic concentration of free Ca2+ in Ehrlich ascites tumour: studies on single cells. Acta Biochim Pol 1993. [DOI: 10.18388/abp.1993_4795] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Concentration of free cytoplasmic Ca2+ ([Ca2+]i) in Ehrlich ascites tumour cells loaded with fura-2 was measured in single cells applying a video imaging system. In resting cells [Ca2+]i amounted to 60-340 nM and was increased after addition of 10 mM D-glucose or D-2-deoxyglucose by 80-200 nM. This increase occurred within 30-60 s following addition of the sugars and lasted for several minutes. Pretreatment of the cells with thapsigargin resulted in a much smaller [Ca2+]i increase after addition of glucose or deoxyglucose and, vice versa, thapsigargin added after the sugars mobilized less Ca2+ than when added before. A possible relation of the [Ca2+]i rise evoked by glucose and deoxyglucose to the Crabtree effect is discussed.
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Teplova VV, Bogucka K, Czyz A, Evtodienko YV, Duszyński J, Wojtczak L. Effect of glucose and deoxyglucose on cytoplasmic [Ca2+] in Ehrlich ascites tumor cells. Biochem Biophys Res Commun 1993; 196:1148-54. [PMID: 8250873 DOI: 10.1006/bbrc.1993.2371] [Citation(s) in RCA: 6] [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] [Indexed: 01/29/2023]
Abstract
Concentration of free cytoplasmic Ca2+ ([Ca2+]i) in Ehrlich ascites tumor cells, measured using fura-2, amounted to 170-300 nM and was increased by 50-160 nM after addition of 10 mM D-glucose or D-2-deoxyglucose but not 3-O-methylglucose at pH 7.4. In the range of external pH between 6.8 and 7.8 the increase was higher at higher pH. This increase occurred within 30-60 s after addition of hexose and lasted for at least 10 min. This [Ca2+]i rise was observed both in presence and virtual absence of Ca2+ in the external medium. Pretreatment of the cells with thapsigargin resulted in a much smaller [Ca2+]i increase after addition of glucose or deoxyglucose. The mechanism of [Ca2+] in the external medium. Pretreatment of the cells with thapsigargin resulted in a much smaller [Ca2+]i increase after addition of glucose or deoxyglucose. The mechanism of [Ca2+]i rise evoked by glucose and deoxyglucose and its importance in switching cell metabolism from oxidative to glycolytic are discussed.
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Affiliation(s)
- V V Teplova
- Nencki Institute of Experimental Biology, Warsaw, Poland
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Zółkiewska A, Czyz A, Duszyński J, Wojtczak L. Continuous recording of intramitochondrial pH with fluorescent pH indicators: novel probes and limitations of the method. Acta Biochim Pol 1993. [DOI: 10.18388/abp.1993_4825] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
In addition to 2',7'-bis-(2-carboxyethyl)-5(6)-carboxyfluorescein (BCECF) used so far to monitor intramitochondrial pH, two other fluorescent pH indicators, 4',5'-dimethyl-5(6)-carboxyfluorescein (DMCF) and carboxyseminaphthofluorescein (carboxy-SNAFL-1), were applied for this purpose. These probes are taken up by isolated rat liver mitochondria in form of diacetate esters, hydrolyzed within mitochondria to free acids, and respond to changes of intramitochondrial pH by changing their fluorescence emission intensity. With all three probes energization of mitochondria by electron donors or acceptors was accompanied by fluorescence changes characteristic for alkalization, whereas deenergization by respiratory inhibitors or protonophores produced changes typical for acidification. Contrary to this, transition from State 4 to State 3, known to shift intramitochondrial pH towards acidification (equivalent to a decrease of delta pH), was accompanied by paradoxical responses of the fluorescent pH probes used: the fluorescence of DMCF increased as if the matrix compartment became more alkaline, the fluorescence of BCECF, measured in single excitation/emission wavelength mode, did not change, and the fluorescence of carboxy-SNAFL-1 could be interpreted as either alkalization or acidification, depending on the excitation/emission wavelength pair used. It was shown that depletion of intramitochondrial Mg2+ and Ca2+ using divalent metal ionophore A23187 decreased fluorescence intensity with all three probes examined, whereas subsequent addition of Mg2+ or Ca2+ increased the fluorescence. It is therefore proposed that the atypical response of intramitochondrial pH indicators upon State 4- State 3 transition is due to changes of intramitochondrial free Mg2+, as related to different complexing abilities of ATP and ADP towards magnesium.
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Bandurski A, Czyz A, Orzolkiewicz F, Sobotkiewicz S. 31-year survival following total cystectomy and bilateral ureterosigmoidal anastomosis in a case of vesical carcinoma. Int Urol Nephrol 1984; 16:297-300. [PMID: 6535780 DOI: 10.1007/bf02081864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A patient with bladder carcinoma, subjected to cystectomy and bilateral ureterosigmoidostomy, survived for the length of 31 years. The Coffey method of anastomosis was applied in a form modified by the authors. The patient succumbed to acute circulatory insufficiency at the age of 85. Metastases were not discovered either during the observation period or at dissection. off
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Czyz A, Rajewski J. [Rifle bullet in the ureter]. Pol Przegl Chir 1976; 48:333-4. [PMID: 1250801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Czyz A, Rajewski J. [Case of urinary tract papillomatosis]. Wiad Lek 1974; 27:1403-5. [PMID: 4472682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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