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Popova G, Vuchev D, Anichina K. Treatment of hepatic and pulmonary hydatidosis with albendazole and praziquantel. Helminthologia 2023; 60:221-226. [PMID: 38152469 PMCID: PMC10750241 DOI: 10.2478/helm-2023-0028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Accepted: 07/27/2023] [Indexed: 12/29/2023] Open
Abstract
Conservative treatment of human hydatidosis (cystic echinococcosis) with albendazole has improved significantly the prognosis of the disease. But its therapeutic effectiveness is 30 - 70 %. There is some evidence that the effectiveness of albendazole can be enhanced by praziquantel but there is no strict recommendation for the use of praziquantel as part of long-term drug therapy for hydatidosis. The aim of the study was to evaluate the effectiveness of the combination of albendazole and praziquantel in patients with hepatic and/or pulmonary hydatidosis. A total of 20 patients (aged 12 - 70 years old) were included in the study for a 5-year period. Fourteen patients (70 %) were with hepatic hydatidosis, 4 (20 %) with pulmonary and 2 (10 %) with hepatic and pulmonary hydatidosis. They were treated with albendazole (15 mg/kg/day) and praziquantel (40 mg/kg/weekly) for 2 - 9 one-month courses. The result of the therapy was followed using imaging (abdominal ultrasound, lung radiography, computed tomography) and serology. Seventeen (85 %) out of 20 patients showed evidence of response on imaging defined as improvement or cure of hydatid cysts. Seven (35 %) of the patients with multiple cystic echinococcosis took praziquantel once a week for 6 months. Only 3 patients (15 %) with multiple hydatidosis (2 with liver and 1 with pulmonary hydatidosis) failed to respond to the therapy with both drugs. No side effects have been reported by the patients. The combination of albendazole and praziquantel seems to be an option to improve the therapeutic effectiveness of the conservative treatment of cystic echinococcosis.
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Affiliation(s)
- G. Popova
- Medical University of Plovdiv, Department of Infectious diseases, Parasitology and Tropical Medicine, Section of Parasitology, St. George University Hospital, Plovdiv, Bulgaria
| | - D. Vuchev
- Medical University of Plovdiv, Department of Infectious diseases, Parasitology and Tropical Medicine, Section of Parasitology, St. George University Hospital, Plovdiv, Bulgaria
| | - K. Anichina
- University of Chemical Technology and Metallurgy, Sofia, Bulgaria
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Ladds MJGW, van Leeuwen IMM, Drummond CJ, Chu S, Healy AR, Popova G, Fernández AP, Mollick T, Darekar S, Sedimbi SK, Nekulova M, Sachweh MCC, Campbell J, Higgins M, Tuck C, Popa M, Safont MM, Gelebart P, Fandalyuk Z, Thompson AM, Svensson R, Gustavsson AL, Johansson L, Färnegårdh K, Yngve U, Saleh A, Haraldsson M, D'Hollander ACA, Franco M, Zhao Y, Håkansson M, Walse B, Larsson K, Peat EM, Pelechano V, Lunec J, Vojtesek B, Carmena M, Earnshaw WC, McCarthy AR, Westwood NJ, Arsenian-Henriksson M, Lane DP, Bhatia R, McCormack E, Laín S. Publisher Correction: A DHODH inhibitor increases p53 synthesis and enhances tumor cell killing by p53 degradation blockage. Nat Commun 2023; 14:5019. [PMID: 37596290 PMCID: PMC10439212 DOI: 10.1038/s41467-023-40764-2] [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: 08/20/2023] Open
Affiliation(s)
- Marcus J G W Ladds
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
- SciLifeLab, Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, Tomtebodavägen 23, SE-171 21, Stockholm, Sweden
| | - Ingeborg M M van Leeuwen
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Catherine J Drummond
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Su Chu
- Division of Hematology and Oncology, Comprehensive Cancer Center, 1720 2nd Avenue South, NP2540, Birmingham, AL, 35294-3300, USA
| | - Alan R Healy
- School of Chemistry and Biomedical Sciences Research Complex, University of St. Andrews and EaStCHEM, St. Andrews, Fife, Scotland, KY16 9ST, UK
| | - Gergana Popova
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Andrés Pastor Fernández
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Tanzina Mollick
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
- SciLifeLab, Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, Tomtebodavägen 23, SE-171 21, Stockholm, Sweden
| | - Suhas Darekar
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
- SciLifeLab, Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, Tomtebodavägen 23, SE-171 21, Stockholm, Sweden
| | - Saikiran K Sedimbi
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
- SciLifeLab, Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, Tomtebodavägen 23, SE-171 21, Stockholm, Sweden
| | - Marta Nekulova
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
- RECAMO, Masaryk Memorial Cancer Institute, Zluty Kopec 7, 65653, Brno, Czech Republic
| | - Marijke C C Sachweh
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Johanna Campbell
- Centre for Oncology and Molecular Medicine, University of Dundee, Ninewells Hospital and Medical School, Dundee, Tayside, DD1 9SY, UK
| | - Maureen Higgins
- Centre for Oncology and Molecular Medicine, University of Dundee, Ninewells Hospital and Medical School, Dundee, Tayside, DD1 9SY, UK
| | - Chloe Tuck
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Mihaela Popa
- Centre for Cancer Biomarkers, CCBIO, Department of Clinical Science, Hematology Section, University of Bergen, 5021, Bergen, Norway
| | - Mireia Mayoral Safont
- Centre for Cancer Biomarkers, CCBIO, Department of Clinical Science, Hematology Section, University of Bergen, 5021, Bergen, Norway
| | - Pascal Gelebart
- Centre for Cancer Biomarkers, CCBIO, Department of Clinical Science, Hematology Section, University of Bergen, 5021, Bergen, Norway
| | - Zinayida Fandalyuk
- Centre for Cancer Biomarkers, CCBIO, Department of Clinical Science, Hematology Section, University of Bergen, 5021, Bergen, Norway
| | - Alastair M Thompson
- Department of Breast Surgical Oncology, MD Anderson Cancer Center, Holcombe Boulevard, Houston, TX, 77030, USA
| | - Richard Svensson
- Department of Pharmacy, Uppsala University Drug Optimization and Pharmaceutical Profiling Platform (UDOPP), Department of Pharmacy, Uppsala University, SE-752 37, Uppsala, Sweden
| | - Anna-Lena Gustavsson
- Chemical Biology Consortium Sweden, Science for Life Laboratory, Division of Translational Medicine and Chemical Biology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-171 21, Stockholm, Sweden
| | - Lars Johansson
- Chemical Biology Consortium Sweden, Science for Life Laboratory, Division of Translational Medicine and Chemical Biology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-171 21, Stockholm, Sweden
| | - Katarina Färnegårdh
- Drug Discovery and Development Platform, Science for Life Laboratory, Tomtebodavägen 23, SE-171 21, Solna, Sweden
| | - Ulrika Yngve
- Department of Medicinal Chemistry, Science for Life Laboratories, Uppsala University, SE-751 23, Uppsala, Sweden
| | - Aljona Saleh
- Department of Medicinal Chemistry, Science for Life Laboratories, Uppsala University, SE-751 23, Uppsala, Sweden
| | - Martin Haraldsson
- Drug Discovery and Development Platform, Science for Life Laboratory, Tomtebodavägen 23, SE-171 21, Solna, Sweden
| | - Agathe C A D'Hollander
- School of Chemistry and Biomedical Sciences Research Complex, University of St. Andrews and EaStCHEM, St. Andrews, Fife, Scotland, KY16 9ST, UK
| | - Marcela Franco
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Yan Zhao
- Newcastle Cancer Centre, Northern Institute for Cancer Research, Newcastle University, Newcastle, NE1 7RU, UK
| | - Maria Håkansson
- SARomics Biostructures, Medicon Village, SE-223 81, Lund, Sweden
| | - Björn Walse
- SARomics Biostructures, Medicon Village, SE-223 81, Lund, Sweden
| | - Karin Larsson
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Emma M Peat
- The Wellcome Trust Centre for Cell Biology, Institute of Cell Biology, University of Edinburgh, Edinburgh, EH9 3JR, UK
| | - Vicent Pelechano
- SciLifeLab, Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, Tomtebodavägen 23, SE-171 21, Stockholm, Sweden
| | - John Lunec
- Newcastle Cancer Centre, Northern Institute for Cancer Research, Newcastle University, Newcastle, NE1 7RU, UK
| | - Borivoj Vojtesek
- RECAMO, Masaryk Memorial Cancer Institute, Zluty Kopec 7, 65653, Brno, Czech Republic
| | - Mar Carmena
- The Wellcome Trust Centre for Cell Biology, Institute of Cell Biology, University of Edinburgh, Edinburgh, EH9 3JR, UK
| | - William C Earnshaw
- The Wellcome Trust Centre for Cell Biology, Institute of Cell Biology, University of Edinburgh, Edinburgh, EH9 3JR, UK
| | - Anna R McCarthy
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Nicholas J Westwood
- School of Chemistry and Biomedical Sciences Research Complex, University of St. Andrews and EaStCHEM, St. Andrews, Fife, Scotland, KY16 9ST, UK
| | - Marie Arsenian-Henriksson
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - David P Lane
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
- SciLifeLab, Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, Tomtebodavägen 23, SE-171 21, Stockholm, Sweden
| | - Ravi Bhatia
- Division of Hematology and Oncology, Comprehensive Cancer Center, 1720 2nd Avenue South, NP2540, Birmingham, AL, 35294-3300, USA
| | - Emmet McCormack
- Centre for Cancer Biomarkers, CCBIO, Department of Clinical Science, Hematology Section, University of Bergen, 5021, Bergen, Norway
- Department of Medicine, Haematology Section, Haukeland University Hospital, Bergen, Norway
| | - Sonia Laín
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden.
- SciLifeLab, Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, Tomtebodavägen 23, SE-171 21, Stockholm, Sweden.
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Ladds MJGW, Popova G, Pastor-Fernández A, Kannan S, van Leeuwen IMM, Håkansson M, Walse B, Tholander F, Bhatia R, Verma CS, Lane DP, Laín S. Exploitation of dihydroorotate dehydrogenase (DHODH) and p53 activation as therapeutic targets: A case study in polypharmacology. J Biol Chem 2020; 295:17935-17949. [PMID: 32900849 PMCID: PMC7939445 DOI: 10.1074/jbc.ra119.012056] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 08/18/2020] [Indexed: 01/17/2023] Open
Abstract
The tenovins are a frequently studied class of compounds capable of inhibiting sirtuin activity, which is thought to result in increased acetylation and protection of the tumor suppressor p53 from degradation. However, as we and other laboratories have shown previously, certain tenovins are also capable of inhibiting autophagic flux, demonstrating the ability of these compounds to engage with more than one target. In this study, we present two additional mechanisms by which tenovins are able to activate p53 and kill tumor cells in culture. These mechanisms are the inhibition of a key enzyme of the de novo pyrimidine synthesis pathway, dihydroorotate dehydrogenase (DHODH), and the blockage of uridine transport into cells. These findings hold a 3-fold significance: first, we demonstrate that tenovins, and perhaps other compounds that activate p53, may activate p53 by more than one mechanism; second, that work previously conducted with certain tenovins as SirT1 inhibitors should additionally be viewed through the lens of DHODH inhibition as this is a major contributor to the mechanism of action of the most widely used tenovins; and finally, that small changes in the structure of a small molecule can lead to a dramatic change in the target profile of the molecule even when the phenotypic readout remains static.
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Affiliation(s)
- Marcus J G W Ladds
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden; SciLifeLab, Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden.
| | - Gergana Popova
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
| | - Andrés Pastor-Fernández
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden; SciLifeLab, Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
| | | | | | | | | | - Fredrik Tholander
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Ravi Bhatia
- Division of Hematology and Oncology, O'Neal Comprehensive Cancer Center, University of Alabama, Birmingham, Alabama, USA
| | - Chandra S Verma
- Bioinformatics Institute (BII), A*STAR, Singapore; Department of Biological Sciences, National University of Singapore, Singapore; School of Biological Sciences, Nanyang Technological University, Singapore
| | - David P Lane
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden; SciLifeLab, Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
| | - Sonia Laín
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden; SciLifeLab, Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden.
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Popova G, Ladds MJGW, Johansson L, Saleh A, Larsson J, Sandberg L, Sahlberg SH, Qian W, Gullberg H, Garg N, Gustavsson AL, Haraldsson M, Lane D, Yngve U, Lain S. Optimization of Tetrahydroindazoles as Inhibitors of Human Dihydroorotate Dehydrogenase and Evaluation of Their Activity and In Vitro Metabolic Stability. J Med Chem 2020; 63:3915-3934. [PMID: 32212728 DOI: 10.1021/acs.jmedchem.9b01658] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Human dihydroorotate dehydrogenase (DHODH), an enzyme in the de novo pyrimidine synthesis pathway, is a target for the treatment of rheumatoid arthritis and multiple sclerosis and is re-emerging as an attractive target for cancer therapy. Here we describe the optimization of recently identified tetrahydroindazoles (HZ) as DHODH inhibitors. Several of the HZ analogues synthesized in this study are highly potent inhibitors of DHODH in an enzymatic assay, while also inhibiting cancer cell growth and viability and activating p53-dependent transcription factor activity in a reporter cell assay. Furthermore, we demonstrate the specificity of the compounds toward the de novo pyrimidine synthesis pathway through supplementation with an excess of uridine. We also show that induction of the DNA damage marker γ-H2AX after DHODH inhibition is preventable by cotreatment with the pan-caspase inhibitor Z-VAD-FMK. Additional solubility and in vitro metabolic stability profiling revealed compound 51 as a favorable candidate for preclinical efficacy studies.
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Affiliation(s)
- Gergana Popova
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Solnavägen 9, SE-171 65 Solna, Stockholm, Sweden
| | - Marcus J G W Ladds
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Solnavägen 9, SE-171 65 Solna, Stockholm, Sweden.,SciLifeLab, Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Tomtebodavägen 23, SE-171 21 Solna, Stockholm, Sweden
| | - Lars Johansson
- Chemical Biology Consortium Sweden, SciLifeLab, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-171 21 Stockholm, Sweden
| | - Aljona Saleh
- SciLifeLab, Drug Discovery and Development Platform, ADME of Therapeutics Facility, Department of Pharmacy, Uppsala University, Box 580, SE-751 23 Uppsala, Sweden
| | - Johanna Larsson
- SciLifeLab, Drug Discovery and Development Platform, Department of Medicinal Chemistry, Uppsala University, Box 574, SE-751 23 Uppsala, Sweden
| | - Lars Sandberg
- SciLifeLab, Drug Discovery and Development Platform, Department of Medicinal Chemistry, Uppsala University, Box 574, SE-751 23 Uppsala, Sweden.,SciLifeLab, Drug Discovery and Development Platform, Department of Organic Chemistry, Stockholm University, Box 1030, SE-171 21 Solna, Stockholm, Sweden
| | - Sara Häggblad Sahlberg
- SciLifeLab, Drug Discovery and Development Platform, Department of Biochemistry and Biophysics, Stockholm University, SE-171 21 Solna, Stockholm, Sweden
| | - Weixing Qian
- Chemical Biology Consortium Sweden, Laboratories for Chemical Biology Umeå, Umeå University, SE-901 87 Umeå, Sweden
| | - Hjalmar Gullberg
- SciLifeLab, Drug Discovery and Development Platform, Department of Biochemistry and Biophysics, Stockholm University, SE-171 21 Solna, Stockholm, Sweden
| | - Neeraj Garg
- SciLifeLab, Drug Discovery and Development Platform, Department of Medicinal Chemistry, Uppsala University, Box 574, SE-751 23 Uppsala, Sweden
| | - Anna-Lena Gustavsson
- Chemical Biology Consortium Sweden, SciLifeLab, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-171 21 Stockholm, Sweden
| | - Martin Haraldsson
- Chemical Biology Consortium Sweden, SciLifeLab, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-171 21 Stockholm, Sweden
| | - David Lane
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Solnavägen 9, SE-171 65 Solna, Stockholm, Sweden
| | - Ulrika Yngve
- SciLifeLab, Drug Discovery and Development Platform, Department of Medicinal Chemistry, Uppsala University, Box 574, SE-751 23 Uppsala, Sweden
| | - Sonia Lain
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Solnavägen 9, SE-171 65 Solna, Stockholm, Sweden.,SciLifeLab, Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Tomtebodavägen 23, SE-171 21 Solna, Stockholm, Sweden
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Popova G, Voynov L. EVALUATION OF THE KERATOMETRIC, BIOMETRIC DATA AND THE BIOMETRIC DEPENDENCIES AS RISK FACTORS OF REFRACTIVE ERROR IN IOL POWER CALCULATION. JofIMAB 2019. [DOI: 10.5272/jimab.2019254.2733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Arnaudova Danevska I, Jakjovska T, Popova G, Momcilovikj S, Gjinovska-Tasevska E, Cakalaroska I. P094 Relationship between microbiological isolates from sputum and age of cystic fibrosis patients in the Cystic Fibrosis Centre at the Institute for Respiratory Diseases in Children in Skopje, the Republic of Macedonia. J Cyst Fibros 2019. [DOI: 10.1016/s1569-1993(19)30388-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Ladds MJGW, van Leeuwen IMM, Drummond CJ, Chu S, Healy AR, Popova G, Pastor Fernández A, Mollick T, Darekar S, Sedimbi SK, Nekulova M, Sachweh MCC, Campbell J, Higgins M, Tuck C, Popa M, Safont MM, Gelebart P, Fandalyuk Z, Thompson AM, Svensson R, Gustavsson AL, Johansson L, Färnegårdh K, Yngve U, Saleh A, Haraldsson M, D'Hollander ACA, Franco M, Zhao Y, Håkansson M, Walse B, Larsson K, Peat EM, Pelechano V, Lunec J, Vojtesek B, Carmena M, Earnshaw WC, McCarthy AR, Westwood NJ, Arsenian-Henriksson M, Lane DP, Bhatia R, McCormack E, Laín S. Publisher Correction: A DHODH inhibitor increases p53 synthesis and enhances tumor cell killing by p53 degradation blockage. Nat Commun 2018; 9:2071. [PMID: 29789663 PMCID: PMC5964109 DOI: 10.1038/s41467-018-04198-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- Marcus J G W Ladds
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden.,SciLifeLab, Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, Tomtebodavägen 23, SE-171 21, Stockholm, Sweden
| | - Ingeborg M M van Leeuwen
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Catherine J Drummond
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Su Chu
- Division of Hematology and Oncology, Comprehensive Cancer Center, 1720 2nd Avenue South, NP2540, Birmingham, AL, 35294-3300, USA
| | - Alan R Healy
- School of Chemistry and Biomedical Sciences Research Complex, University of St. Andrews and EaStCHEM, St. Andrews, Fife, Scotland, KY16 9ST, UK
| | - Gergana Popova
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Andrés Pastor Fernández
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Tanzina Mollick
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden.,SciLifeLab, Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, Tomtebodavägen 23, SE-171 21, Stockholm, Sweden
| | - Suhas Darekar
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden.,SciLifeLab, Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, Tomtebodavägen 23, SE-171 21, Stockholm, Sweden
| | - Saikiran K Sedimbi
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden.,SciLifeLab, Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, Tomtebodavägen 23, SE-171 21, Stockholm, Sweden
| | - Marta Nekulova
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden.,RECAMO, Masaryk Memorial Cancer Institute, Zluty Kopec 7, 65653, Brno, Czech Republic
| | - Marijke C C Sachweh
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Johanna Campbell
- Centre for Oncology and Molecular Medicine, University of Dundee, Ninewells Hospital and Medical School, Dundee, Tayside, DD1 9SY, UK
| | - Maureen Higgins
- Centre for Oncology and Molecular Medicine, University of Dundee, Ninewells Hospital and Medical School, Dundee, Tayside, DD1 9SY, UK
| | - Chloe Tuck
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Mihaela Popa
- Centre for Cancer Biomarkers, CCBIO, Department of Clinical Science, Hematology Section, University of Bergen, 5021, Bergen, Norway
| | - Mireia Mayoral Safont
- Centre for Cancer Biomarkers, CCBIO, Department of Clinical Science, Hematology Section, University of Bergen, 5021, Bergen, Norway
| | - Pascal Gelebart
- Centre for Cancer Biomarkers, CCBIO, Department of Clinical Science, Hematology Section, University of Bergen, 5021, Bergen, Norway
| | - Zinayida Fandalyuk
- Centre for Cancer Biomarkers, CCBIO, Department of Clinical Science, Hematology Section, University of Bergen, 5021, Bergen, Norway
| | - Alastair M Thompson
- Department of Breast Surgical Oncology, MD Anderson Cancer Center, Holcombe Boulevard, Houston, 77030, USA
| | - Richard Svensson
- Department of Pharmacy, Uppsala University Drug Optimization and Pharmaceutical Profiling Platform (UDOPP), Department of Pharmacy, Uppsala University, SE-752 37, Uppsala, Sweden
| | - Anna-Lena Gustavsson
- Chemical Biology Consortium Sweden, Science for Life Laboratory, Division of Translational Medicine and Chemical Biology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-171 21, Stockholm, Sweden
| | - Lars Johansson
- Chemical Biology Consortium Sweden, Science for Life Laboratory, Division of Translational Medicine and Chemical Biology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-171 21, Stockholm, Sweden
| | - Katarina Färnegårdh
- Drug Discovery and Development Platform, Science for Life Laboratory, Tomtebodavägen 23, SE-171 21, Solna, Sweden
| | - Ulrika Yngve
- Department of Medicinal Chemistry, Science for Life Laboratories, Uppsala University, SE-751 23, Uppsala, Sweden
| | - Aljona Saleh
- Department of Medicinal Chemistry, Science for Life Laboratories, Uppsala University, SE-751 23, Uppsala, Sweden
| | - Martin Haraldsson
- Drug Discovery and Development Platform, Science for Life Laboratory, Tomtebodavägen 23, SE-171 21, Solna, Sweden
| | - Agathe C A D'Hollander
- School of Chemistry and Biomedical Sciences Research Complex, University of St. Andrews and EaStCHEM, St. Andrews, Fife, Scotland, KY16 9ST, UK
| | - Marcela Franco
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Yan Zhao
- Newcastle Cancer Centre, Northern Institute for Cancer Research, Newcastle University, Newcastle, NE1 7RU, UK
| | - Maria Håkansson
- SARomics Biostructures, Medicon Village, SE-223 81, Lund, Sweden
| | - Björn Walse
- SARomics Biostructures, Medicon Village, SE-223 81, Lund, Sweden
| | - Karin Larsson
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Emma M Peat
- The Wellcome Trust Centre for Cell Biology, Institute of Cell Biology, University of Edinburgh, Edinburgh, EH9 3JR, UK
| | - Vicent Pelechano
- SciLifeLab, Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, Tomtebodavägen 23, SE-171 21, Stockholm, Sweden
| | - John Lunec
- Newcastle Cancer Centre, Northern Institute for Cancer Research, Newcastle University, Newcastle, NE1 7RU, UK
| | - Borivoj Vojtesek
- RECAMO, Masaryk Memorial Cancer Institute, Zluty Kopec 7, 65653, Brno, Czech Republic
| | - Mar Carmena
- The Wellcome Trust Centre for Cell Biology, Institute of Cell Biology, University of Edinburgh, Edinburgh, EH9 3JR, UK
| | - William C Earnshaw
- The Wellcome Trust Centre for Cell Biology, Institute of Cell Biology, University of Edinburgh, Edinburgh, EH9 3JR, UK
| | - Anna R McCarthy
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Nicholas J Westwood
- School of Chemistry and Biomedical Sciences Research Complex, University of St. Andrews and EaStCHEM, St. Andrews, Fife, Scotland, KY16 9ST, UK
| | - Marie Arsenian-Henriksson
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - David P Lane
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden.,SciLifeLab, Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, Tomtebodavägen 23, SE-171 21, Stockholm, Sweden
| | - Ravi Bhatia
- Division of Hematology and Oncology, Comprehensive Cancer Center, 1720 2nd Avenue South, NP2540, Birmingham, AL, 35294-3300, USA
| | - Emmet McCormack
- Centre for Cancer Biomarkers, CCBIO, Department of Clinical Science, Hematology Section, University of Bergen, 5021, Bergen, Norway.,Department of Medicine, Haematology Section, Haukeland University Hospital, Bergen, Norway
| | - Sonia Laín
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden. .,SciLifeLab, Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, Tomtebodavägen 23, SE-171 21, Stockholm, Sweden.
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8
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Ladds MJGW, Pastor-Fernández A, Popova G, van Leeuwen IMM, Eng KE, Drummond CJ, Johansson L, Svensson R, Westwood NJ, McCarthy AR, Tholander F, Popa M, Lane DP, McCormack E, McInerney GM, Bhatia R, Laín S. Autophagic flux blockage by accumulation of weakly basic tenovins leads to elimination of B-Raf mutant tumour cells that survive vemurafenib. PLoS One 2018; 13:e0195956. [PMID: 29684045 PMCID: PMC5912769 DOI: 10.1371/journal.pone.0195956] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Accepted: 04/03/2018] [Indexed: 12/19/2022] Open
Abstract
Tenovin-6 is the most studied member of a family of small molecules with antitumour activity in vivo. Previously, it has been determined that part of the effects of tenovin-6 associate with its ability to inhibit SirT1 and activate p53. However, tenovin-6 has also been shown to modulate autophagic flux. Here we show that blockage of autophagic flux occurs in a variety of cell lines in response to certain tenovins, that autophagy blockage occurs regardless of the effect of tenovins on SirT1 or p53, and that this blockage is dependent on the aliphatic tertiary amine side chain of these molecules. Additionally, we evaluate the contribution of this tertiary amine to the elimination of proliferating melanoma cells in culture. We also demonstrate that the presence of the tertiary amine is sufficient to lead to death of tumour cells arrested in G1 phase following vemurafenib treatment. We conclude that blockage of autophagic flux by tenovins is necessary to eliminate melanoma cells that survive B-Raf inhibition and achieve total tumour cell kill and that autophagy blockage can be achieved at a lower concentration than by chloroquine. This observation is of great relevance as relapse and resistance are frequently observed in cancer patients treated with B-Raf inhibitors.
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Affiliation(s)
- Marcus J. G. W. Ladds
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
- * E-mail: (MJGWL); (SL)
| | - Andrés Pastor-Fernández
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
| | - Gergana Popova
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
| | | | - Kai Er Eng
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
| | - Catherine J. Drummond
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
| | - Lars Johansson
- Chemical Biology Consortium Sweden, Department of Medical Biochemistry and Biophysics, Science for Life Laboratory, Division of Translational Medicine and Chemical Biology, Karolinska Institutet, Stockholm, Sweden
| | - Richard Svensson
- Department of Pharmacy, Uppsala University Drug Optimization and Pharmaceutical Profiling Platform (UDOPP), Uppsala University, Uppsala, Sweden
| | - Nicholas J. Westwood
- School of Chemistry and Biomedical Science Research Complex, University of St. Andrews and EaStCHEM, St Andrews, Fife, Scotland, United Kingdom
| | - Anna R. McCarthy
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
| | - Fredrik Tholander
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Mihaela Popa
- Department of Clinical Science, University of Bergen, Bergen, Norway
| | - David P. Lane
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
| | - Emmet McCormack
- Department of Clinical Science, University of Bergen, Bergen, Norway
- Department of Internal Medicine, Hematology Section, Haukeland University Hospital, Bergen, Norway
| | - Gerald M. McInerney
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
| | - Ravi Bhatia
- Department of Hematology and Oncology, University of Alabama, Birmingham, Alabama, United States of America
| | - Sonia Laín
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
- * E-mail: (MJGWL); (SL)
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9
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Ladds MJGW, van Leeuwen IMM, Drummond CJ, Chu S, Healy AR, Popova G, Pastor Fernández A, Mollick T, Darekar S, Sedimbi SK, Nekulova M, Sachweh MCC, Campbell J, Higgins M, Tuck C, Popa M, Safont MM, Gelebart P, Fandalyuk Z, Thompson AM, Svensson R, Gustavsson AL, Johansson L, Färnegårdh K, Yngve U, Saleh A, Haraldsson M, D'Hollander ACA, Franco M, Zhao Y, Håkansson M, Walse B, Larsson K, Peat EM, Pelechano V, Lunec J, Vojtesek B, Carmena M, Earnshaw WC, McCarthy AR, Westwood NJ, Arsenian-Henriksson M, Lane DP, Bhatia R, McCormack E, Laín S. A DHODH inhibitor increases p53 synthesis and enhances tumor cell killing by p53 degradation blockage. Nat Commun 2018; 9:1107. [PMID: 29549331 PMCID: PMC5856786 DOI: 10.1038/s41467-018-03441-3] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Accepted: 02/13/2018] [Indexed: 01/29/2023] Open
Abstract
The development of non-genotoxic therapies that activate wild-type p53 in tumors is of great interest since the discovery of p53 as a tumor suppressor. Here we report the identification of over 100 small-molecules activating p53 in cells. We elucidate the mechanism of action of a chiral tetrahydroindazole (HZ00), and through target deconvolution, we deduce that its active enantiomer (R)-HZ00, inhibits dihydroorotate dehydrogenase (DHODH). The chiral specificity of HZ05, a more potent analog, is revealed by the crystal structure of the (R)-HZ05/DHODH complex. Twelve other DHODH inhibitor chemotypes are detailed among the p53 activators, which identifies DHODH as a frequent target for structurally diverse compounds. We observe that HZ compounds accumulate cancer cells in S-phase, increase p53 synthesis, and synergize with an inhibitor of p53 degradation to reduce tumor growth in vivo. We, therefore, propose a strategy to promote cancer cell killing by p53 instead of its reversible cell cycle arresting effect.
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Affiliation(s)
- Marcus J G W Ladds
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
- SciLifeLab, Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, Tomtebodavägen 23, SE-171 21, Stockholm, Sweden
| | - Ingeborg M M van Leeuwen
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Catherine J Drummond
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Su Chu
- Division of Hematology and Oncology, Comprehensive Cancer Center, 1720 2nd Avenue South, NP2540, Birmingham, AL, 35294-3300, USA
| | - Alan R Healy
- School of Chemistry and Biomedical Sciences Research Complex, University of St. Andrews and EaStCHEM, St. Andrews, Fife, Scotland, KY16 9ST, UK
| | - Gergana Popova
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Andrés Pastor Fernández
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Tanzina Mollick
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
- SciLifeLab, Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, Tomtebodavägen 23, SE-171 21, Stockholm, Sweden
| | - Suhas Darekar
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
- SciLifeLab, Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, Tomtebodavägen 23, SE-171 21, Stockholm, Sweden
| | - Saikiran K Sedimbi
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
- SciLifeLab, Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, Tomtebodavägen 23, SE-171 21, Stockholm, Sweden
| | - Marta Nekulova
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
- RECAMO, Masaryk Memorial Cancer Institute, Zluty Kopec 7, 65653, Brno, Czech Republic
| | - Marijke C C Sachweh
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Johanna Campbell
- Centre for Oncology and Molecular Medicine, University of Dundee, Ninewells Hospital and Medical School, Dundee, Tayside, DD1 9SY, UK
| | - Maureen Higgins
- Centre for Oncology and Molecular Medicine, University of Dundee, Ninewells Hospital and Medical School, Dundee, Tayside, DD1 9SY, UK
| | - Chloe Tuck
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Mihaela Popa
- Centre for Cancer Biomarkers, CCBIO, Department of Clinical Science, Hematology Section, University of Bergen, 5021, Bergen, Norway
| | - Mireia Mayoral Safont
- Centre for Cancer Biomarkers, CCBIO, Department of Clinical Science, Hematology Section, University of Bergen, 5021, Bergen, Norway
| | - Pascal Gelebart
- Centre for Cancer Biomarkers, CCBIO, Department of Clinical Science, Hematology Section, University of Bergen, 5021, Bergen, Norway
| | - Zinayida Fandalyuk
- Centre for Cancer Biomarkers, CCBIO, Department of Clinical Science, Hematology Section, University of Bergen, 5021, Bergen, Norway
| | - Alastair M Thompson
- Department of Breast Surgical Oncology, MD Anderson Cancer Center, Holcombe Boulevard, Houston, 77030, USA
| | - Richard Svensson
- Department of Pharmacy, Uppsala University Drug Optimization and Pharmaceutical Profiling Platform (UDOPP), Department of Pharmacy, Uppsala University, SE-752 37, Uppsala, Sweden
| | - Anna-Lena Gustavsson
- Chemical Biology Consortium Sweden, Science for Life Laboratory, Division of Translational Medicine and Chemical Biology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-171 21, Stockholm, Sweden
| | - Lars Johansson
- Chemical Biology Consortium Sweden, Science for Life Laboratory, Division of Translational Medicine and Chemical Biology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-171 21, Stockholm, Sweden
| | - Katarina Färnegårdh
- Drug Discovery and Development Platform, Science for Life Laboratory, Tomtebodavägen 23, SE-171 21, Solna, Sweden
| | - Ulrika Yngve
- Department of Medicinal Chemistry, Science for Life Laboratories, Uppsala University, SE-751 23, Uppsala, Sweden
| | - Aljona Saleh
- Department of Medicinal Chemistry, Science for Life Laboratories, Uppsala University, SE-751 23, Uppsala, Sweden
| | - Martin Haraldsson
- Drug Discovery and Development Platform, Science for Life Laboratory, Tomtebodavägen 23, SE-171 21, Solna, Sweden
| | - Agathe C A D'Hollander
- School of Chemistry and Biomedical Sciences Research Complex, University of St. Andrews and EaStCHEM, St. Andrews, Fife, Scotland, KY16 9ST, UK
| | - Marcela Franco
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Yan Zhao
- Newcastle Cancer Centre, Northern Institute for Cancer Research, Newcastle University, Newcastle, NE1 7RU, UK
| | - Maria Håkansson
- SARomics Biostructures, Medicon Village, SE-223 81, Lund, Sweden
| | - Björn Walse
- SARomics Biostructures, Medicon Village, SE-223 81, Lund, Sweden
| | - Karin Larsson
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Emma M Peat
- The Wellcome Trust Centre for Cell Biology, Institute of Cell Biology, University of Edinburgh, Edinburgh, EH9 3JR, UK
| | - Vicent Pelechano
- SciLifeLab, Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, Tomtebodavägen 23, SE-171 21, Stockholm, Sweden
| | - John Lunec
- Newcastle Cancer Centre, Northern Institute for Cancer Research, Newcastle University, Newcastle, NE1 7RU, UK
| | - Borivoj Vojtesek
- RECAMO, Masaryk Memorial Cancer Institute, Zluty Kopec 7, 65653, Brno, Czech Republic
| | - Mar Carmena
- The Wellcome Trust Centre for Cell Biology, Institute of Cell Biology, University of Edinburgh, Edinburgh, EH9 3JR, UK
| | - William C Earnshaw
- The Wellcome Trust Centre for Cell Biology, Institute of Cell Biology, University of Edinburgh, Edinburgh, EH9 3JR, UK
| | - Anna R McCarthy
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Nicholas J Westwood
- School of Chemistry and Biomedical Sciences Research Complex, University of St. Andrews and EaStCHEM, St. Andrews, Fife, Scotland, KY16 9ST, UK
| | - Marie Arsenian-Henriksson
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - David P Lane
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden
- SciLifeLab, Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, Tomtebodavägen 23, SE-171 21, Stockholm, Sweden
| | - Ravi Bhatia
- Division of Hematology and Oncology, Comprehensive Cancer Center, 1720 2nd Avenue South, NP2540, Birmingham, AL, 35294-3300, USA
| | - Emmet McCormack
- Centre for Cancer Biomarkers, CCBIO, Department of Clinical Science, Hematology Section, University of Bergen, 5021, Bergen, Norway
- Department of Medicine, Haematology Section, Haukeland University Hospital, Bergen, Norway
| | - Sonia Laín
- Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, SE-171 77, Stockholm, Sweden.
- SciLifeLab, Department of Microbiology, Tumor and Cell Biology (MTC), Karolinska Institutet, Tomtebodavägen 23, SE-171 21, Stockholm, Sweden.
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10
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Savova R, Popova G, Koprivarova K, Konstantinova M, Angelova B, Atanasova M, Goranova S, Christov V, Kalinov K. Clinical and laboratory characteristics of type I (insulin dependent) diabetes mellitus at presentation among Bulgarian children. Diabetes Res Clin Pract 1996; 34 Suppl:S159-63. [PMID: 9015686 DOI: 10.1016/s0168-8227(96)90024-8] [Citation(s) in RCA: 10] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Clinical and laboratory data of 1248 newly diagnosed diabetic children at the time of diagnosis were analysed. All children were admitted to the University Children's Hospital in Sofia, 45.9% before first their insulin injection. Symptoms preceding the diagnosis and laboratory data (plasma glucose and ketonuria) were analysed, respectively for 1100 and 1022 children. Blood pH (mainly arterialized) was available in 558 ketonuria positive children and in other 82 acidotic breathing was reported. Mother's education was noted in the 1226 hospital records. Among the children with known urinanalysis 13.5% were without ketonuria (148 patients), 12 of them with fasting blood glucose < or = 6.4 mmol/1 (115 mg/dl). Eighteen-point-two percent of all children were hospitalized in a state of severe ketoacidosis (blood pH < or = 7.2 or reported acidotic breathing). The average duration of thirst and polyuria was 28 +/- 33 days. Ketonuria negative children with plasma glucose < or = 6.4 mmol/l showed a significantly shorter period of symptoms, compared to those with plasma glucose > 6.4 mmol/1 (17 +/- 25 vs. 25 +/- 31 days; P = 0.0991). The cases with severe ketoacidosis, compared to those with mild ketoacidosis (blood pH 7.21 - 7.34) showed shorter period of symptoms too (P = 0.0658). Moderate positive relation existed between the age at diagnosis and duration of symptoms (chi 2 = 43.28, D.F. = 8, P = 0.0000). The percentage of severe ketoacidosis is higher in the younger age groups. Febrile illness, preceding the start of the symptoms was more common in the groups with shorter duration of symptoms (up to 1 month), but did not change the proportion of severe ketoacidosis. No significant difference was found between the level of mother's education and duration of the symptoms before diagnosis (P = 0.9782). We conclude that the level of metabolic disturbances at the diagnosis of IDDM among children was not influenced by the duration of the preceding symptoms. The severity of clinical picture was possibly dependent on the degree of insulinopenia, i.e. the rate of beta-cell destruction. Clinical heterogeneity was possibly dependent on genetical heterogeneity related to HLA class II genes.
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Affiliation(s)
- R Savova
- Clinic of Endocrinology and Diabetes, University Children's Hospital, Sofia, Bulgaria
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11
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Despodova TS, Tsenov D, Chamova M, Popova G, Garnizov T. [Experience in treating episiotomies after labor with ice]. Akush Ginekol (Sofiia) 1995; 34:26-27. [PMID: 8743842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
It is known from literature influence on cryotherapy on the tissue structures. It's application cause vessel constriction factor for decrease exudative inflammations and edema), save enzyme and immune activity at the cells levels and increases regenerative processes in tissues On the 324 young mothers we fix ice over episiotomies from 1st puerperal day for 3 days. As a control group were episiotomies on the 254 young mothers one cryoprophylaxis. Complications (oedema, inflammatio, or suppuratio) at the 1st group was 5.55% and in the 2nd (control) group was 9.45%. These results give us reason to suppose, that cryoprophylaxis have even non essential effect on the processes on recovery on episiotomies after delivery.
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