1
|
Yang H, Lin M, Liu M, Gu H, Li D, Shi Y, Hou X. Evaluate the value of prolonging the duration of tiopronin for injection administration in preventing hepatotoxicity. Sci Rep 2024; 14:3674. [PMID: 38351216 PMCID: PMC10864266 DOI: 10.1038/s41598-024-54314-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Accepted: 02/11/2024] [Indexed: 02/16/2024] Open
Abstract
As part of supportive therapy, prophylaxis with tiopronin for injection (TI) against common hepatotoxicity complications has often been used. However, methods to prevent hepatotoxicity have not been established. Therefore, our study was aimed to find out the relationship between the periods of TI prophylaxis and post-treatment hepatotoxicity, and evaluated the value of prolonging the duration of TI administration in preventing hepatotoxicity. Hepatotoxicity was detected through liver transaminases, bilirubin, alkaline phosphatase, and clinical features of liver insufficiency. Multivariable logistic regressions were conducted to examine the association of the periods of TI prophylaxis and post-treatment hepatotoxicity. Between January 2022 and March 2023, a total of 452 patients with gynecological cancer were enrolled in the study, of which 93 (20.58%) participants were post-treatment hepatotoxicity positive. TI with different prevention days were no significant difference among participants with or without post-treatment hepatotoxicity in crude model (P > 0.05). The P-value, the odds ratios (OR) and 95% confidence intervals (CI) of participants with TI prophylaxis for 1 day for post-treatment hepatotoxicity were 0.040, 3.534 (1.061-11.765) in fully adjusted model. Past history of hepatotoxicity is a confounding variable, and there was no significant difference for post-treatment hepatotoxicity when stratified by past history of hepatotoxicity (P > 0.05). The study indicate that the periods of TI prophylaxis is not associated with post-treatment hepatotoxicity, suggesting that prolonged the periods of TI prophylaxis might be an invalid method for the prevention of post-treatment hepatotoxicity.
Collapse
Affiliation(s)
- Hongye Yang
- Department of Pharmacy, The Affiliated Anyang Tumor Hospital of Henan University of Science and Technology, Huanbin North Road, Anyang City, 455000, Henan Province, China.
| | - Mingzhu Lin
- Department of Pharmacy, The Affiliated Anyang Tumor Hospital of Henan University of Science and Technology, Huanbin North Road, Anyang City, 455000, Henan Province, China
| | - Mengxing Liu
- Department of Pharmacy, The Affiliated Anyang Tumor Hospital of Henan University of Science and Technology, Huanbin North Road, Anyang City, 455000, Henan Province, China
| | - Huawei Gu
- Department of Pharmacy, The Affiliated Anyang Tumor Hospital of Henan University of Science and Technology, Huanbin North Road, Anyang City, 455000, Henan Province, China
| | - Dan Li
- Department of Pharmacy, The Affiliated Anyang Tumor Hospital of Henan University of Science and Technology, Huanbin North Road, Anyang City, 455000, Henan Province, China
| | - Yu Shi
- Department of Pharmacy, The Affiliated Anyang Tumor Hospital of Henan University of Science and Technology, Huanbin North Road, Anyang City, 455000, Henan Province, China
| | - Xidong Hou
- Department of Pharmacy, The Affiliated Anyang Tumor Hospital of Henan University of Science and Technology, Huanbin North Road, Anyang City, 455000, Henan Province, China
| |
Collapse
|
2
|
Gruen A, Exner S, Kühl JS, von Stackelberg A, Budach V, Stromberger C, Boehmer D. Total body irradiation as part of conditioning regimens in childhood leukemia-long-term outcome, toxicity, and secondary malignancies. Strahlenther Onkol 2021; 198:33-38. [PMID: 34282476 PMCID: PMC8760188 DOI: 10.1007/s00066-021-01810-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 06/13/2021] [Indexed: 11/28/2022]
Abstract
Background Total body irradiation (TBI) is an established part of conditioning regimens prior to stem cell transplantation in childhood leukemia but is associated with long-term toxicity. We retrospectively analyzed survival, long-term toxicity, and secondary malignancies in a pooled cohort of pediatric patients (pts.) treated with the same TBI regimen. Methods Analyzed were 109 pts. treated between September 1996 and November 2015. Conditioning treatment according to EBMT guidelines and the ALL SCTped 2012 FORUM trial consisted of chemotherapy (CT) and TBI with 2 Gy b.i.d. on 3 consecutive days to a total dose of 12 Gy. Median follow-up was 97.9 months (2–228 months). Results Overall survival (OS) in our cohort at 2, 5, and 10 years was 86.1, 75.5, and 63.0%, respectively. Median survival was not reached. Long-term toxicity developed in 47 pts. After chronically abnormal liver and kidney parameters in 31 and 7 pts., respectively, growth retardation was the most frequent finding as seen in 13 pts. Secondary malignancies were rare (n = 3). Conclusion TBI-containing conditioning regimens in pediatric stem cell transplantation (SCT) are highly effective. Efforts to replace TBI- with CT-containing regimens have only been successful in subgroups of pts. Although we could show long-term toxicity in 43% of pts., overall survival was 63% at 10 years. Still, long-term effects such as growth retardation can permanently impact the pts.’ quality of life and functioning. Along with new substances, efforts should be undertaken to optimize TBI techniques and accompany the treatment by systematic follow-up programs beyond 5 years to improve detection of rare events.
Collapse
Affiliation(s)
- Arne Gruen
- Department for Radiation Oncology and Radiotherapy, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Campus Virchow-Clinic, Augustenburger Platz 1, 13353, Berlin, Germany.
| | - Sebastian Exner
- Strahlenzentrum Hamburg MVZ, Langenhorner Chaussee 369, 22419, Hamburg, Germany
| | - Jörn-Sven Kühl
- Department for Pediatric Oncology, Hematology and Hemostaseology, University Clinic Leipzig, Liebigstraße 22, Haus 7, 04103, Leipzig, Germany
| | - Arend von Stackelberg
- Department for Pediatric Hematology, Oncology and Stem Cell Transplantation, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Volker Budach
- Department for Radiation Oncology and Radiotherapy, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Campus Virchow-Clinic, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Carmen Stromberger
- Department for Radiation Oncology and Radiotherapy, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Campus Virchow-Clinic, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Dirk Boehmer
- Department for Radiation Oncology and Radiotherapy, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Campus Virchow-Clinic, Augustenburger Platz 1, 13353, Berlin, Germany
| |
Collapse
|
3
|
Albrecht F, Wolters H, Ziert Y, Timmermann B, Kortmann RD, Matuschek C, Rübe C, Martini C, Christiansen H, Eich HT, Willich N, Steinmann D. Evaluation of treatment-associated eye toxicity after irradiation in childhood and adolescence-results from the Registry of the Evaluation of Side Effects after Radiotherapy in Childhood and Adolescence (RiSK). Strahlenther Onkol 2021; 197:700-710. [PMID: 34100093 PMCID: PMC8292243 DOI: 10.1007/s00066-021-01793-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 04/23/2021] [Indexed: 11/06/2022]
Abstract
Purpose The aim of the study is to evaluate treatment-related acute and late eye toxicity associated with radiation therapy in childhood and adolescence as correlated with RT (radiotherapy) doses. Methods From 2001 to 2016, a total of 1725 children and adolescents undergoing radiation therapy were prospectively documented in the Registry of the Evaluation of Side Effects after Radiotherapy in Childhood and Adolescence (RiSK). The RTOG/EORTC criteria were used to classify ocular acute and late effects. Uni- and multivariate analyses were carried out to evaluate the impact of patient age, pre-existing impairments, and radiation dose on ocular toxicity. Results Of all documented patients, 593 received dose to the eye and formed the basis of this analysis. In 435 patients, information on acute reaction was available and graded 1, 2, 3, and 4 in 49, 17, 0, and 2 patients, respectively. Information on late toxicity was available in 268 patients and graded 1, 2, 3, and 4 in 15, 11, 11, and 5 patients, respectively. The acute toxicity rate was significantly higher in children who received a maximum dose > 50 Gy to the eye (p < 0.001) and who had a pre-existing eye impairment (p < 0.001 in multivariate analysis). The development of late toxicity was significantly higher for patients experiencing acute toxicity and having received a radiation dose > 50 Gy. Conclusion Acute and late toxicity both correlate with high radiation dose to the eye (> 50 Gy) and acute toxicity additionally with pre-existing eye impairments.
Collapse
Affiliation(s)
- Fenja Albrecht
- Department of Radiotherapy, Medical School Hannover, Hannover, Germany.
| | - Heidi Wolters
- Department of Radiotherapy, University Hospital of Münster, Münster, Germany
| | - Yvonne Ziert
- Institute of biometrics, Medical School Hannover, Hannover, Germany
| | - Beate Timmermann
- Center for Proton Radiation Therapy, Paul-Scherrer-Institute, Villigen, Switzerland.,Department of Particle Therapy, West German Proton Therapy Centre Essen (WPE), West German Cancer Center (WTZ), German Cancer Consortium (DKTK), University Hospital Essen, Essen, Germany
| | | | - Christiane Matuschek
- Department of Radiation Oncology, Heinrich Heine University Hospital of Düsseldorf, Düsseldorf, Germany
| | - Christian Rübe
- Department of Radiotherapy and Radiation Oncology, Saarland University, Homburg/Saar, Germany
| | - Carmen Martini
- Department of Radiotherapy, University Hospital of Freiburg, Freiburg, Germany
| | - Hans Christiansen
- Department of Radiotherapy, Medical School Hannover, Hannover, Germany
| | - Hans Theodor Eich
- Department of Radiotherapy, University Hospital of Münster, Münster, Germany
| | - Normann Willich
- Department of Radiotherapy, University Hospital of Münster, Münster, Germany
| | - Diana Steinmann
- Department of Radiotherapy, Medical School Hannover, Hannover, Germany
| |
Collapse
|
4
|
Hoeben BA, Pazos M, Albert MH, Seravalli E, Bosman ME, Losert C, Boterberg T, Manapov F, Ospovat I, Milla SM, Abakay CD, Engellau J, Kos G, Supiot S, Bierings M, Janssens GO. Towards homogenization of total body irradiation practices in pediatric patients across SIOPE affiliated centers. A survey by the SIOPE radiation oncology working group. Radiother Oncol 2021; 155:113-119. [DOI: 10.1016/j.radonc.2020.10.032] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 10/07/2020] [Accepted: 10/21/2020] [Indexed: 02/06/2023]
|
5
|
Soliman AM, Karam HM, Mekkawy MH, Ghorab MM. Antioxidant activity of novel quinazolinones bearing sulfonamide: Potential radiomodulatory effects on liver tissues via NF-κB/ PON1 pathway. Eur J Med Chem 2020; 197:112333. [DOI: 10.1016/j.ejmech.2020.112333] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Revised: 04/13/2020] [Accepted: 04/13/2020] [Indexed: 02/06/2023]
|
6
|
Saif-Elnasr M, Abdel Fattah SM, Swailam HM. Treatment of hepatotoxicity induced by γ-radiation using platelet-rich plasma and/or low molecular weight chitosan in experimental rats. Int J Radiat Biol 2019; 95:1517-1528. [PMID: 31290709 DOI: 10.1080/09553002.2019.1642538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 05/09/2019] [Accepted: 06/27/2019] [Indexed: 10/26/2022]
Abstract
Background and aim: Platelet-rich plasma (PRP) is rich in growth factors and plays an important role in tissue healing and cytoprotection. Also, it has been proved that low molecular weight chitosan (LMC) possesses many outstanding health benefits. The aim of this study was to assess the possibility of using PRP and/or fungal LMC to treat hepatotoxicity induced by γ-radiation in albino rats.Materials and methods: Forty-eight adult male albino rats were randomly divided into eight groups. Group I (control), Group II (PRP alone), Group III (LMC alone), Group IV (PRP + LMC), Group V (γ-irradiated alone), Group VI (γ-irradiated + PRP), Group VII (γ-irradiated + LMC), and Group VIII (γ-irradiated + PRP + LMC). The irradiated rats were whole body exposed to γ-radiation (8 Gy) as fractionated doses (2 Gy) twice a week for 2 consecutive weeks. The treated groups received PRP (0.5 mL/kg body weight, s.c.) and/or LMC (10 mg/kg body weight, s.c.) 2 days a week 1 h after every dose of γ-radiation and continued for another week after the last dose of radiation. Serum alanine transaminase (ALT) and aspartate transaminase (AST) activities, as well as reduced glutathione (GSH) content, malondialdehyde (MDA), total antioxidant capacity (TAC), and nuclear factor erythroid 2-related factor 2 (Nrf2) levels in the liver tissue and relative expression of microRNA-21 (miR-21) in serum were measured, in addition to histopathological examination.Results: Exposure of rats to γ-radiation resulted in a significant increase in serum ALT and AST activities, hepatic MDA levels, and serum miR-21 relative expression, along with a significant decrease in hepatic GSH content, TAC, and Nrf2 levels. Treatment with PRP and/or fungal LMC after exposure to γ-radiation ameliorated these parameters and improved the histopathological changes induced by γ-radiation.Conclusions: The results demonstrated that PRP and/or LMC inhibited γ-radiation-induced hepatotoxicity and using both of them together seems more effective. They can be a candidate to be studied toward the development of a therapeutic strategy for liver diseases.
Collapse
Affiliation(s)
- Mostafa Saif-Elnasr
- Health Radiation Research Department, National Center for Radiation Research and Technology, Egyptian Atomic Energy Authority, Cairo, Egypt
| | - Salma M Abdel Fattah
- Drug Radiation Research Department, National Center for Radiation Research and Technology, Egyptian Atomic Energy Authority, Cairo, Egypt
| | - Hesham M Swailam
- Radiation Microbiology Department, National Center for Radiation Research and Technology, Egyptian Atomic Energy Authority, Cairo, Egypt
| |
Collapse
|
7
|
Papachristofilou A, Hottinger AL, Weinhold O, Avcu YK, Finazzi T, Diesch T, Schratzenstaller U. Heart-sparing volumetric modulated arc therapy for whole lung irradiation. Strahlenther Onkol 2018; 195:77-82. [PMID: 30191284 DOI: 10.1007/s00066-018-1363-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Accepted: 08/23/2018] [Indexed: 12/13/2022]
Abstract
PURPOSE Whole lung irradiation (WLI) is indicated for subgroups of patients with lung metastases from Wilms' tumor (nephroblastoma). WLI has traditionally been performed with an anterior/posterior field arrangement with poor potential for heart sparing; thus, new techniques are desirable to achieve a lower dose to the heart. MATERIALS AND METHODS We utilized volumetric modulated arc therapy (VMAT) for WLI with 18 Gy in a patient with metastatic nephroblastoma. The planning results were compared against a three-dimensional (3D) conformal plan. RESULTS VMAT resulted in adequate target volume coverage with the prescribed dose. Mean heart dose was 10.2 Gy. The dose to organs at risk (OAR) was generally more favorable with VMAT when compared with a 3D-conformal radiotherapy plan. DISCUSSION WLI with VMAT provides superior sparing of OARs and especially a considerably lower dose to the heart.
Collapse
Affiliation(s)
- Alexandros Papachristofilou
- Clinic of Radiotherapy and Radiation Oncology, University Hospital Basel, Petersgraben 4, 4031, Basel, Switzerland.
| | - Anna-Lena Hottinger
- Clinic of Radiotherapy and Radiation Oncology, University Hospital Basel, Petersgraben 4, 4031, Basel, Switzerland
| | - Oliver Weinhold
- Clinic of Radiotherapy and Radiation Oncology, University Hospital Basel, Petersgraben 4, 4031, Basel, Switzerland
| | - Yasar-Kemal Avcu
- Clinic of Radiotherapy and Radiation Oncology, University Hospital Basel, Petersgraben 4, 4031, Basel, Switzerland
| | - Tobias Finazzi
- Clinic of Radiotherapy and Radiation Oncology, University Hospital Basel, Petersgraben 4, 4031, Basel, Switzerland
| | - Tamara Diesch
- Department of Pediatric Oncology and Hematology, University Children's Hospital Basel, Basel, Switzerland
| | - Ulrich Schratzenstaller
- Clinic of Radiotherapy and Radiation Oncology, University Hospital Basel, Petersgraben 4, 4031, Basel, Switzerland
| |
Collapse
|
8
|
Sun Q, Mao W, Jiang H, Zhang X, Xiao J, Lian Y. The Effect of Protracted Exposure to Radiation on Liver Injury: A Cohort Study of Industrial Radiographers in Xinjiang, China. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2018; 15:E71. [PMID: 29300360 PMCID: PMC5800170 DOI: 10.3390/ijerph15010071] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 12/29/2017] [Accepted: 01/01/2018] [Indexed: 12/18/2022]
Abstract
BACKGROUND At present, a large number of studies indicate that high dose ionizing radiation exposure is an important risk factor for liver damage. Whether protracted exposure to low external doses of ionizing radiation could induce liver injury is unclear. The aim of this study was to assess the risk of liver injury following protracted exposure to occupational radiation compared to a group of unexposed workers. METHODS A three-year cohort study was initiated in Xinjiang, China in 2010 and included 508 industrial radiographers and 2156 unexposed workers. The incidence of liver injury was assessed clinically based on the evaluation of alanine aminotransferase (ALT) and aspartate transaminase (AST) levels. Logistic regression was used to examine whether radiation is a risk factor for liver injury. RESULTS Compared with the unexposed group, protracted radiation exposure was found to be a risk factor for liver injury. Sex, age at baseline and alcohol consumption were not associated with liver injury. However, hypertension was a risk factor for liver injury. The association between cumulative recorded radiation dose and liver injury was not found in this study. CONCLUSIONS These findings indicate that protracted exposure to radiation is a risk factor for liver injury.
Collapse
Affiliation(s)
- Qing Sun
- Division of Occupational and Environmental Health, College of Public Health, Nantong University, Se Yuan Road, No. 8, Nantong 226019, China.
| | - Weiming Mao
- Division of Occupational and Environmental Health, College of Public Health, Nantong University, Se Yuan Road, No. 8, Nantong 226019, China.
| | - Haiyue Jiang
- Division of Occupational and Environmental Health, College of Public Health, Nantong University, Se Yuan Road, No. 8, Nantong 226019, China.
| | - Xiaoyue Zhang
- Division of Occupational and Environmental Health, College of Public Health, Nantong University, Se Yuan Road, No. 8, Nantong 226019, China.
| | - Jing Xiao
- Division of Occupational and Environmental Health, College of Public Health, Nantong University, Se Yuan Road, No. 8, Nantong 226019, China.
| | - Yulong Lian
- Division of Occupational and Environmental Health, College of Public Health, Nantong University, Se Yuan Road, No. 8, Nantong 226019, China.
| |
Collapse
|
9
|
Lung toxicity after radiation in childhood: Results of the International Project on Prospective Analysis of Radiotoxicity in Childhood and Adolescence. Radiother Oncol 2017; 125:286-292. [PMID: 29050956 DOI: 10.1016/j.radonc.2017.09.026] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2016] [Revised: 08/09/2017] [Accepted: 09/23/2017] [Indexed: 12/14/2022]
Abstract
BACKGROUND AND PURPOSE This study presents the evaluation of acute and late toxicities of the lung in children and adolescents after irradiation in terms of dose-volume effects. MATERIALS AND METHODS Irradiated children and adolescents in Germany have prospectively been documented since 2001 in the "Registry for the Evaluation of Side-Effects after Radiotherapy in Childhood and Adolescence (RiSK)"; in Sweden since 2008 in the RADTOX registry. RESULTS Up to April 2012, 1,392 children were recruited from RiSK, and up to June 2013, 485 from the RADTOX-registry. Of these patients, 295 were irradiated to the lung. Information about acute toxicity was available for 228 patients. 179 patients have been documented concerning late toxicity (≥grade 1: n = 28). The acute toxicity rate was noticeably higher in children irradiated with 5-20Gy (p < 0.05). In the univariate analysis, a shorter time until late toxicity was noticeably associated with irradiation with 5-15Gy (p < 0.05). CONCLUSION Acute and late toxicities appear to be correlated with higher irradiation volumes and low doses. Our data indicate that similar to the situation in adult patients, V5, V10, V15 and V20 should be kept as low as possible (e.g., at least V5 < 50%, V10 and V15 < 35% and V20 < 30%) in children and adolescents to lower the risk of toxicity.
Collapse
|
10
|
Demoor-Goldschmidt C, Chiavassa S, Josset S, Mahé MA, Supiot S. Respiratory-gated bilateral pulmonary radiotherapy for Ewing's sarcoma and nephroblastoma in children and young adults: Dosimetric and clinical feasibility studies. Cancer Radiother 2017; 21:124-129. [PMID: 28377061 DOI: 10.1016/j.canrad.2016.11.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Revised: 10/26/2016] [Accepted: 11/02/2016] [Indexed: 11/17/2022]
Abstract
PURPOSE Bilateral pulmonary radiotherapy in children and young adults aims to reduce the recurrence of lung metastases. The radiation field includes liver tissue, which is sensitive to even low radiation doses. We investigated the feasibility of respiratory gating radiotherapy using voluntary deep inspiration breath hold and its toxicity in these patients. PATIENTS AND METHOD A retrospective clinical review was conducted for all patients who had undergone bilateral pulmonary radiotherapy, with or without deep inspiration breath hold, treated in our institution between October 1999 and May 2012. A dosimetric study was conducted on seven consecutive children using 4D-scan data on free-breathing and a SpiroDyn'RX-system-scan on deep inspiration breath hold. A radiation treatment of 20Gy was simulated. RESULTS Concerning the clinical study, seven patients of mean age 11.9 years (range: 4.9-21.1 years) were treated with free-breathing and ten patients of mean age 15.6 years (range: 8.6-19.7 years) were treated with deep inspiration breath hold for mainly Ewing sarcoma and nephroblastoma. Within six months of radiotherapy, all patients experienced mild liver toxicity (grade 1 or 2 altered levels of alanine/aspartate aminotransferase [n=8 of 9] or cholestasis [n=1 of 9]), which resolved completely with no difference between deep inspiration breath hold and free-breathing technique. Over a median follow-up of 2.6 years (range: 0.1-9.3 years), four patients died from disease progression (mean 1.5 years post-radiotherapy [range: 1.1-1.6 years]) and three experienced grade III-V lung toxicity. Concerning the dosimetric study, the irradiated liver volume was significantly lower with deep inspiration breath hold than free-breathing, for each isodose (V5: 73.80% versus 86.74%, P<0.05; V20: 5.70% versus 26.44%, P<0.05). CONCLUSIONS The dosimetric data of respiratory-gated bilateral pulmonary radiotherapy showed a significantly spare of normal liver tissue. Clinical data showed that this technique is feasible even in young children. However, no liver toxicity difference between deep inspiration breath hold and free-breathing was shown.
Collapse
Affiliation(s)
- C Demoor-Goldschmidt
- Department of radiation oncology, institut de cancérologie de l'Ouest René-Gauducheau, boulevard Jacques-Monod, 44805 Saint-Herblain, France; Faculté de médecine, université de Nantes, 1, rue Gaston-Veil, 44000 Nantes, France; Centre de recherche en épidémiologie et santé publique (CESP), 114, rue Édouard-Vaillant, 94805 Villejuif, France; Inserm U1018, 114, rue Édouard-Vaillant, 94805 Villejuif, France; Université Paris-Saclay, université Paris-Sud, 94807 Villejuif, France; Department of clinical research, Gustave-Roussy, 114, rue Édouard-Vaillant, 94805 Villejuif, France.
| | - S Chiavassa
- Department of medical physics, institut de cancérologie de l'Ouest René-Gauducheau, boulevard Jacques-Monod, 44805 Saint-Herblain, France
| | - S Josset
- Department of medical physics, institut de cancérologie de l'Ouest René-Gauducheau, boulevard Jacques-Monod, 44805 Saint-Herblain, France
| | - M-A Mahé
- Department of radiation oncology, institut de cancérologie de l'Ouest René-Gauducheau, boulevard Jacques-Monod, 44805 Saint-Herblain, France; Faculté de médecine, université de Nantes, 1, rue Gaston-Veil, 44000 Nantes, France
| | - S Supiot
- Department of radiation oncology, institut de cancérologie de l'Ouest René-Gauducheau, boulevard Jacques-Monod, 44805 Saint-Herblain, France; Faculté de médecine, université de Nantes, 1, rue Gaston-Veil, 44000 Nantes, France
| |
Collapse
|
11
|
Wüstemann T, Bauder-Wüst U, Schäfer M, Eder M, Benesova M, Leotta K, Kratochwil C, Haberkorn U, Kopka K, Mier W. Design of Internalizing PSMA-specific Glu-ureido-based Radiotherapeuticals. Theranostics 2016; 6:1085-95. [PMID: 27279903 PMCID: PMC4893637 DOI: 10.7150/thno.13448] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Accepted: 02/28/2016] [Indexed: 12/01/2022] Open
Abstract
Despite the progress in diagnosis and treatment, prostate cancer (PCa) is one of the main causes for cancer-associated deaths among men. Recently, prostate-specific membrane antigen (PSMA) binding tracers have revolutionized the molecular imaging of this disease. The translation of these tracers into therapeutic applications is challenging because of high PSMA-associated kidney uptake. While both the tumor uptake and the uptake in the kidneys are PSMA-specific, the kidneys show a more rapid clearance than tumor lesions. Consequently, the potential of endoradiotherapeutic drugs targeting PSMA is highly dependent on a sustained retention in the tumor - ideally achieved by predominant internalization of the respective tracer. Previously, we were able to show that the pharmacokinetics of the tracers containing the Glu-urea-based binding motif can be further enhanced with a specifically designed linker. Here, we evaluate an eventual influence of the chelator moiety on the pharmacokinetics, including the tumor internalization. A series of tracers modified by different chelators were synthesized using solid phase chemistry. The conjugates were radiolabeled to evaluate the influence on the receptor binding affinity, the ligand-induced internalization and the biodistribution behavior. Competitive binding and internalization assays were performed on PSMA positive LNCaP cells and the biodistribution of the most promising compound was evaluated by positron emission tomography (PET) in LNCaP-tumor-bearing mice. Interestingly, conjugation of the different chelators did not cause significant differences: all compounds showed nanomolar binding affinities with only minor differences. PET imaging of the 68Ga-labeled CHX-A''-DTPA conjugate revealed that the chelator moiety does not impair the specificity of tumor uptake when compared to the gold standard PSMA-617. However, strong differences of the internalization ratios caused by the chelator moiety were observed: differences in internalization between 15% and 65% were observed, with the CHX-A''-DTPA conjugate displaying the highest internalization ratio. A first-in-man PET/CT study proved the high tumor uptake of this 68Ga-labeled PSMA-targeting compound. These data indicate that hydrophobic entities at the chelator mediate the internalization efficacy. Based on its specific tumor uptake in combination with its very high internalization ratio, the clinical performance of the chelator-conjugated Glu-urea-based PSMA inhibitors will be further elucidated.
Collapse
|