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Gernaat SAM, von Stedingk H, Hassan M, Nilsson HP, Rodriguez-Wallberg KA, Hedayati E, Rydberg P. Cyclophosphamide exposure assessed with the biomarker phosphoramide mustard-hemoglobin in breast cancer patients: The TailorDose I study. Sci Rep 2021; 11:2707. [PMID: 33526812 PMCID: PMC7851165 DOI: 10.1038/s41598-021-81662-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 12/30/2020] [Indexed: 11/09/2022] Open
Abstract
Cyclophosphamide (CPA) dosing by body surface area (BSA, m2) has been questioned as a predictor for individual drug exposure. This study investigated phosphoramide mustard-hemoglobin (PAM-Hb, pmol g-1 Hb) as a biomarker of CPA exposure in 135 female breast cancer patients receiving CPA during three courses based on BSA: 500 mg/m2 (C500 group, n = 67) or 600 mg/m2 (C600 group, n = 68). The inter-individual difference was calculated for both groups by dividing the highest through the lowest PAM-Hb value of each course. The inter-occasion difference was calculated in percentage for each individual by dividing their PAM-Hb value through the group mean per course, and subsequently dividing this ratio of the latter through the previous course. A multivariable linear regression (MLR) was performed to identify factors that explained the variation of PAM-Hb. During the three courses, the inter-individual difference changed from 3.5 to 2.1 and the inter-occasion difference ranged between 13.3% and 11.9% in the C500 group. In the C600 group, the inter-individual difference changed from 2.7 to 2.9 and the inter-occasion difference ranged between 14.1% and 11.7%. The MLR including BSA, age, GFR, and albumin explained 17.1% of the variation of PAM-Hb and was significantly better then the model including only BSA. These factors should be considered when calculating the first dose of CPA for breast cancer patients.
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Affiliation(s)
- S A M Gernaat
- Clinical Epidemiology Division, Department of Medicine Solna, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden.
| | | | - M Hassan
- Department of Laboratory Medicine, Karolinska Institutet, Karolinska University Hospital, Huddinge, Sweden
| | | | - K A Rodriguez-Wallberg
- Department of Oncology-Pathology, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden.,Department of Gynecology and Reproduction, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - E Hedayati
- Department of Oncology-Pathology, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden.,Medical Unit of Breast Cancer, Sarcoma and Endocrine Tumours, Theme Cancer, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - P Rydberg
- Department of Oncology-Pathology, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
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Gutzkow KB, Duale N, Danielsen T, von Stedingk H, Shahzadi S, Instanes C, Olsen AK, Steffensen IL, Hofer T, Törnqvist M, Brunborg G, Lindeman B. Enhanced susceptibility of obese mice to glycidamide-induced sperm chromatin damage without increased oxidative stress. Andrology 2016; 4:1102-1114. [DOI: 10.1111/andr.12233] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Revised: 04/26/2016] [Accepted: 05/11/2016] [Indexed: 11/29/2022]
Affiliation(s)
- K. B. Gutzkow
- Division of Environmental Medicine; Department of Chemicals and Radiation; Norwegian Institute of Public Health; Oslo Norway
| | - N. Duale
- Division of Environmental Medicine; Department of Chemicals and Radiation; Norwegian Institute of Public Health; Oslo Norway
| | - T. Danielsen
- Division of Environmental Medicine; Department of Chemicals and Radiation; Norwegian Institute of Public Health; Oslo Norway
| | - H. von Stedingk
- Department of Environmental Science and Analytical Chemistry; Stockholm University; Stockholm Sweden
| | - S. Shahzadi
- Division of Environmental Medicine; Department of Chemicals and Radiation; Norwegian Institute of Public Health; Oslo Norway
| | - C. Instanes
- Division of Environmental Medicine; Department of Chemicals and Radiation; Norwegian Institute of Public Health; Oslo Norway
| | - A.-K. Olsen
- Division of Environmental Medicine; Department of Chemicals and Radiation; Norwegian Institute of Public Health; Oslo Norway
| | - I.-L. Steffensen
- Division of Environmental Medicine; Department of Food, Water and Cosmetics; Norwegian Institute of Public Health; Oslo Norway
| | - T. Hofer
- Division of Environmental Medicine; Department of Chemicals and Radiation; Norwegian Institute of Public Health; Oslo Norway
| | - M. Törnqvist
- Department of Environmental Science and Analytical Chemistry; Stockholm University; Stockholm Sweden
| | - G. Brunborg
- Division of Environmental Medicine; Department of Chemicals and Radiation; Norwegian Institute of Public Health; Oslo Norway
| | - B. Lindeman
- Division of Environmental Medicine; Department of Chemicals and Radiation; Norwegian Institute of Public Health; Oslo Norway
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von Stedingk H, Osterman-Golkar S, Törnqvist M. Chapter 4. Biomarkers of Exposure: Hemoglobin Adducts. Biomarkers and Human Biomonitoring 2011. [DOI: 10.1039/9781849733540-00001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Carcaillet C, Almquist H, Asnong H, Bradshaw RHW, Carrión JS, Gaillard MJ, Gajewski K, Haas JN, Haberle SG, Hadorn P, Müller SD, Richard PJH, Richoz I, Rösch M, Sánchez Goñi MF, von Stedingk H, Stevenson AC, Talon B, Tardy C, Tinner W, Tryterud E, Wick L, Willis KJ. Holocene biomass burning and global dynamics of the carbon cycle. Chemosphere 2002; 49:845-863. [PMID: 12430662 DOI: 10.1016/s0045-6535(02)00385-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Fire regimes have changed during the Holocene due to changes in climate, vegetation, and in human practices. Here, we hypothesise that changes in fire regime may have affected the global CO2 concentration in the atmosphere through the Holocene. Our data are based on quantitative reconstructions of biomass burning deduced from stratified charcoal records from Europe, and South-, Central- and North America, and Oceania to test the fire-carbon release hypothesis. In Europe the significant increase of fire activity is dated approximately 6000 cal. yr ago. In north-eastern North America burning activity was greatest before 7500 years ago, very low between 7500-3000 years, and has been increasing since 3000 years ago. In tropical America, the pattern is more complex and apparently latitudinally zonal. Maximum burning occurred in the southern Amazon basin and in Central America during the middle Holocene, and during the last 2000 years in the northern Amazon basin. In Oceania, biomass burning has decreased since a maximum 5000 years ago. Biomass burning has broadly increased in the Northern and Southern hemispheres throughout the second half of the Holocene associated with changes in climate and human practices. Global fire indices parallel the increase of atmospheric CO2 concentration recorded in Antarctic ice cores. Future issues on carbon dynamics relatively to biomass burning are discussed to improve the quantitative reconstructions.
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Affiliation(s)
- C Carcaillet
- Department of Forest Vegetation Ecology, Swedish University of Agricultural Sciences, Umeå.
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