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Al-Jamaei AAH, Epstein JB, de Visscher JGAM, Spielberger RT, Nakamura R, Raber-Durlacher JE. Comparing the risk of severe oral mucositis associated with methotrexate as graft-versus host-disease prophylaxis to other immunosuppressive prophylactic agents in hematopoietic cell transplantation: a systematic review and meta-analysis. Support Care Cancer 2024; 32:519. [PMID: 39017899 PMCID: PMC11255043 DOI: 10.1007/s00520-024-08722-w] [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: 03/20/2024] [Accepted: 07/05/2024] [Indexed: 07/18/2024]
Abstract
PURPOSE This study examines the risk of severe oral mucositis (SOM) in graft-versus-host disease prophylaxis (GVHD) compared to other agents in hematopoietic cell transplantation patients. METHODS A comprehensive search of four databases, including PubMed, Embassy, Web of Science, and Scopus, was conducted to identify studies reporting frequency and severity of oral mucositis in association with GVHD prophylactic regimens. RevMan 5.4 was used to perform the meta-analysis. Risk of bias assessment was carried out using the Rob-2 tool for randomized clinical trials (RCTs) and ROBINS-I tool for observational studies. RESULTS Twenty-five papers, including 11 RCTs and 14 observational studies, met the inclusion criteria. The pooled results from eight RCTs showed a higher risk of SOM in patients receiving MTX or MTX-inclusive GVHD prophylaxis versus non-MTX alternatives (RR = 1.50, 95% CI [1.20, 1.87], I2 = 36%, P = 0.0003). Mycophenolate mofetil (MMF) and post-transplant cyclophosphamide (Pt-Cy) consistently showed lower risk of mucositis than MTX. Folinic acid (FA) rescue and mini-dosing of MTX were associated with reduced oral mucositis severity. CONCLUSION Patients receiving MTX have a higher SOM risk compared to other approaches to prevent GVHD, which should be considered in patient care. When appropriate, MMF, FA, and a mini-dose of MTX may be an alternative that is associated with less SOM. This work also underlines the scarcity of RCTs on MTX interventions to provide the best evidence-based recommendations.
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Affiliation(s)
- Aisha A H Al-Jamaei
- Department of Oral and Maxillofacial Surgery, Amsterdam UMC, Amsterdam, The Netherlands
- Department of Oral Medicine, Periodontics, Diagnostic, and Oral Radiology, Faculty of Dentistry, Sanaá University, Sanaá, Yemen
- Department of Oral Surgery and Oral Medicine, Al-Razi University, Sanaá, Yemen
| | - Joel B Epstein
- Cedars-Sinai Medical Center, Los Angeles, CA, USA
- City of Hope Comprehensive Cancer Center, Duarte, CA, USA
| | - Jan G A M de Visscher
- Department of Oral and Maxillofacial Surgery, Amsterdam UMC, Amsterdam, The Netherlands
| | - Ricardo T Spielberger
- Department of BMT, Southern California Permanente Medical Group, Kaiser Permanente, Los Angeles, CA, USA
- Department of Hematology &, Center for Stem Cell Transplantation at City of Hope Comprehensive Cancer Center, Hematopoietic Cell Transplantation, Duarte, CA, USA
| | - Ryotaro Nakamura
- Department of Hematology &, Center for Stem Cell Transplantation at City of Hope Comprehensive Cancer Center, Hematopoietic Cell Transplantation, Duarte, CA, USA
| | - Judith E Raber-Durlacher
- Department of Oral and Maxillofacial Surgery, Amsterdam UMC, Amsterdam, The Netherlands.
- Department of Oral Medicine, Academic Centre for Dentistry Amsterdam, Amsterdam, The Netherlands.
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Li W, Mo J, Yang Z, Zhao Z, Mei S. Risk factors associated with high-dose methotrexate induced toxicities. Expert Opin Drug Metab Toxicol 2024; 20:263-274. [PMID: 38501267 DOI: 10.1080/17425255.2024.2332366] [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: 01/20/2024] [Accepted: 03/15/2024] [Indexed: 03/20/2024]
Abstract
INTRODUCTION High-dose methotrexate (HDMTX) therapy poses challenges in various neoplasms due to individualized pharmacokinetics and associated adverse effects. Our purpose is to identify early risk factors associated with HDMTX-induced toxicities, paving the way for personalized treatment. AREAS COVERED A systematic review of PubMed and Cochrane databases was conducted for articles from inception to July 2023. Eligible studies included reviews, clinical trials, and real-world analyses. Irrelevant studies were excluded, and manual searches and citation reviews were performed. Factors such as MTX exposure, drug interactions, demographics, serum albumin, urine pH, serum calcium, and genetic polymorphisms affecting MTX transport (e.g. SLCO1B1), intracellular folate metabolism (MTHFR), cell development (ARID5B), metabolic pathways (UGT1A1, PNPLA3), as well as epigenetics were identified. EXPERT OPINION This comprehensive review aids researchers and clinicians in early identification of HDMTX toxicity risk factors. By understanding the multifaceted risk factors associated with hematologic malignancies, personalized treatment approaches can be tailored to optimize therapeutic outcomes.
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Affiliation(s)
- Wenshu Li
- Department of Pharmacy, Beijing Tiantan Hospital, Capital Medical University, Beijing, P. R. China
- Department of Clinical Pharmacology, College of Pharmaceutical Sciences, Capital Medical University, Beijing, P. R. China
| | - Jiayi Mo
- Department of Pharmacy, Beijing Tiantan Hospital, Capital Medical University, Beijing, P. R. China
- Department of Clinical Pharmacology, College of Pharmaceutical Sciences, Capital Medical University, Beijing, P. R. China
| | - Zhilin Yang
- Department of Pharmacy, Beijing Tiantan Hospital, Capital Medical University, Beijing, P. R. China
- Department of Clinical Pharmacology, College of Pharmaceutical Sciences, Capital Medical University, Beijing, P. R. China
| | - Zhigang Zhao
- Department of Pharmacy, Beijing Tiantan Hospital, Capital Medical University, Beijing, P. R. China
- Department of Clinical Pharmacology, College of Pharmaceutical Sciences, Capital Medical University, Beijing, P. R. China
| | - Shenghui Mei
- Department of Pharmacy, Beijing Tiantan Hospital, Capital Medical University, Beijing, P. R. China
- Department of Clinical Pharmacology, College of Pharmaceutical Sciences, Capital Medical University, Beijing, P. R. China
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Oku S, Futatsuki T, Imamura Y, Hikita H, Inada A, Mizutani S, Mori Y, Kashiwazaki H. Protective effect of cryotherapy against oral mucositis among allogeneic hematopoietic stem cell transplant recipients using melphalan-based conditioning. Support Care Cancer 2023; 31:521. [PMID: 37581845 PMCID: PMC10427514 DOI: 10.1007/s00520-023-07989-9] [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: 05/02/2022] [Accepted: 08/09/2023] [Indexed: 08/16/2023]
Abstract
PURPOSE Oral cryotherapy is an effective method to prevent oral mucositis (OM) induced by chemotherapeutic agents, such as melphalan (Mel). However, there is limited data about cryotherapy in allogeneic hematopoietic stem cell transplantation (allo-HSCT) recipients; thus, the current study aimed to examine the efficacy of cryotherapy among allo-HSCT recipients treated with Mel-containing regimens. METHODS Medical records of 78 consecutive allo-HSCT recipients were retrospectively analyzed. Baseline characteristics and clinical courses between the patients who received cryotherapy (cryotherapy group, n = 42) and those who did not (control group, n = 36) were compared, especially focusing on methotrexate (MTX) use as a part of graft-versus-host disease (GVHD) prophylaxis. RESULTS Binary logistic regression analysis revealed that a higher dose of Mel (OR, 3.82; 95%CI, 1.085-13.46; P = 0.037) or MTX use (OR, 7.61; 95% CI, 2.41-23.97; P < 0.001) was associated with the incidence of OM. MTX use was also significantly associated with the duration of OM (β = 0.515; 95% CI, 9.712-21.636; P < 0.001). Among 31 patients without MTX use, cryotherapy was associated with a significant reduction of OM development (0% in the cryotherapy group vs 35% in the control group, P = 0.021). We did not find such an association in 47 patients with MTX use. CONCLUSION Cryotherapy was useful to prevent the incidence of OM in allo-HSCT recipients in the cases without MTX for GVHD prophylaxis.
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Affiliation(s)
- Saori Oku
- Section of Geriatric Dentistry and Perioperative Medicine in Dentistry, Division of Maxillofacial Diagnostic and Surgical Sciences, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | | | - Yoshiko Imamura
- Section of Geriatric Dentistry and Perioperative Medicine in Dentistry, Division of Maxillofacial Diagnostic and Surgical Sciences, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Haruna Hikita
- Dental Hygiene Section, Department of Medical Technology, Kyushu University Hospital, Kyushu University, Fukuoka, Japan
| | - Akemi Inada
- Department of Nursing, Kyushu University Hospital, Kyushu University, Fukuoka, Japan
| | - Shinsuke Mizutani
- Section of Geriatric Dentistry and Perioperative Medicine in Dentistry, Division of Maxillofacial Diagnostic and Surgical Sciences, Faculty of Dental Science, Kyushu University, Fukuoka, Japan.
- OBT Research Center, Faculty of Dental Science, Kyushu University, 3-1-1 Maidashi, Higashi-Ku, Fukuoka, 812-8582, Japan.
| | - Yasuo Mori
- Department of Medicine and Biosystemic Science, Kyushu University Graduate School of Medical Sciences, Fukuoka, Japan
| | - Haruhiko Kashiwazaki
- Section of Geriatric Dentistry and Perioperative Medicine in Dentistry, Division of Maxillofacial Diagnostic and Surgical Sciences, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
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Podpeskar A, Crazzolara R, Kropshofer G, Hetzer B, Rabensteiner E, Meister B, Obexer P, Salvador C. Recommendations for Nutritional Supplementation in Pediatric Oncology: A Compilation of the Facts. Nutrients 2023; 15:3239. [PMID: 37513658 PMCID: PMC10386187 DOI: 10.3390/nu15143239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 07/18/2023] [Accepted: 07/19/2023] [Indexed: 07/30/2023] Open
Abstract
BACKGROUND As one of the few modifiable risk factors, the importance of dietary patterns for both disease prevention and treatment outcome in pediatric oncology has gained increasing popularity. Malnutrition is associated with lower survival rates, tolerance to treatment, and quality of life. Yet, especially in children with malignancies, nutritional deterioration is common, and pediatric cancer patients often present with inadequate intake of micro- and macronutrients alike. Despite the reported widespread use of dietary supplements, few empirical data provide a basis for clinical recommendations, and evidence for their efficacy is inconsistent. Current literature lacks a systematic approach as to how and which supplements should be recommended for specific patients, types of cancer, or during specific treatments. The aim of this review is to highlight the role of the most frequently used nutrients in pediatric malignant diseases and to give a practical guide based on current scientific evidence. METHODS A comprehensive literature search was conducted on PubMed through April 2023 to select meta-analyses, systematic reviews, observational studies, and individual randomized controlled trials (RCTs) of macro- and micronutrient supplementation in pediatric oncology. The search strategy included the following medical subject headings (MeSH) and keywords: "childhood cancer", "pediatric oncology", "nutritional status", "dietary supplements", "vitamins", "micronutrients", "calcium", "magnesium", "vitamin D", "zinc" "glutamine", "selen", and "omega-3 fatty acids". The reference lists of all relevant articles were screened to include potentially pertinent studies. RESULTS The present review provides a comprehensive and updated overview of the latest evidence about the role of nutrition and diet in pediatric oncology, also focusing on different nutritional interventions available for the management of the disease. We summarize evidence about the importance of adequate nutrition in childhood cancer and the role of several micronutrients and critically interpret the findings. Possible effects and benefits of supplementation during chemotherapy are discussed, as are strategies for primary and secondary prevention. CONCLUSIONS We here describe the obvious benefits of dietary supplementation for childhood cancer. Further large-scale clinical trials are required to verify the impacts of deficiencies and the possible benefits of supplementation and optimal dosages. (337 words).
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Affiliation(s)
- Alexandra Podpeskar
- Department of Pediatrics I, Division of Hematology and Oncology, Medical University of Innsbruck, Anichstr. 35, 6020 Innsbruck, Austria
| | - Roman Crazzolara
- Department of Pediatrics I, Division of Hematology and Oncology, Medical University of Innsbruck, Anichstr. 35, 6020 Innsbruck, Austria
| | - Gabriele Kropshofer
- Department of Pediatrics I, Division of Hematology and Oncology, Medical University of Innsbruck, Anichstr. 35, 6020 Innsbruck, Austria
| | - Benjamin Hetzer
- Department of Pediatrics I, Division of Hematology and Oncology, Medical University of Innsbruck, Anichstr. 35, 6020 Innsbruck, Austria
| | - Evelyn Rabensteiner
- Department of Pediatrics I, Division of Hematology and Oncology, Medical University of Innsbruck, Anichstr. 35, 6020 Innsbruck, Austria
| | - Bernhard Meister
- Department of Pediatrics I, Division of Hematology and Oncology, Medical University of Innsbruck, Anichstr. 35, 6020 Innsbruck, Austria
| | - Petra Obexer
- Department of Pediatrics II, Institute of Experimental Neonatology, Medical University of Innsbruck, 6020 Innsbruck, Austria
| | - Christina Salvador
- Department of Pediatrics I, Division of Hematology and Oncology, Medical University of Innsbruck, Anichstr. 35, 6020 Innsbruck, Austria
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Sun K, Tao H, Ding T, Li Z, Qiu X, Zhong M, Wu Z. Risk factors for high-dose methotrexate associated toxicities in patients with primary central nervous system lymphoma. J Clin Pharm Ther 2022; 47:2196-2204. [PMID: 36259502 DOI: 10.1111/jcpt.13791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 07/30/2022] [Accepted: 09/18/2022] [Indexed: 12/24/2022]
Abstract
WHAT IS KNOWN AND OBJECTIVE Methotrexate (MTX) is an antimetabolic antitumor drug with high individual differences and may lead to severe toxicities in a considerable number of patients. This study aimed to explore the factors influencing major adverse events in patients with primary central nervous system lymphoma treated with high-dose MTX (HD-MTX), which could be useful in clinical practice. METHODS Fifty-four patients who received 175 courses of MTX at 3-8 g/m2 between January 2015 and December 2016 were enrolled in this study. We assessed the association between clinical characteristics, MTX pharmacokinetics, MTX delayed elimination, and adverse events, including hepatotoxicity, acute kidney injury (AKI), and myelosuppression. RESULTS AND DISCUSSION A total of 124 adverse events occurred after MTX infusion. Using independent sample t-tests, we found that patients with myelosuppression had higher MTX area under the concentration-time curve up to 48 h after infusion (AUC0-48h ) (p = 0.001) and MTX peak concentration (Cmax ) (p = 0.002). MTX concentrations at 48 and 72 h were higher in patients with AKI than in those without (p = 0.034 and p = 0.041, respectively). Using chi-square tests, we found that AKI was correlated with MTX elimination at either 48 h or 72 h (22.1% vs. 8.2%, p = 0.010). By multivariate logistic regression model, our results showed that baseline level of ALT and WBC had a significant effect on hepatotoxicity (OR = 1.079, 95% CI 1.044-1.116, p = 6.9 × 10-6 ; OR = 0.808, 95% CI 0.711-0.917, p = 0.001, respectively). Patient's age, eGFR before MTX infusion, and co-administration of vindesine had a significant effect on AKI (OR = 0.960, 95% CI 0.935-0.986, p = 0.003; OR = 1.009, 95% CI 1.001-1.017, p = 0.034; OR = 5.463, 95% CI 1.793-16.646, p = 0.003, respectively). LDH and Co-administration of vindesine had a significant effect on myelosuppression (OR = 0.985, 95% CI 0.972-0.998, p = 0.025; OR = 3.070, 95% CI 1.032-9.133, p = 0.044). WHAT IS NEW AND CONCLUSION Our study demonstrated that co-administration of VDS, eGFR before MTX infusion, and the baseline index of laboratory examinations including ALT, WBC, LDH may be useful biomarkers for predicting MTX-induced toxicities.
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Affiliation(s)
- Kai Sun
- Department of Pharmacy, Huashan Hospital, Fudan University, Shanghai, China.,Department of Pharmacy, Obstetrics and Gynecology Hospital, Fudan University, Shanghai, China
| | - Hongwei Tao
- Department of Pharmacy, Huashan Hospital, Fudan University, Shanghai, China
| | - Tianling Ding
- Department of Hematology, Huashan hospital, Fudan University, Shanghai, China
| | - Ziran Li
- Department of Pharmacy, Huashan Hospital, Fudan University, Shanghai, China
| | - Xiaoyan Qiu
- Department of Pharmacy, Huashan Hospital, Fudan University, Shanghai, China
| | - Mingkang Zhong
- Department of Pharmacy, Huashan Hospital, Fudan University, Shanghai, China
| | - Zhuo Wu
- Department of Pharmacy, Huashan Hospital, Fudan University, Shanghai, China
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Ioele G, Chieffallo M, Occhiuzzi MA, De Luca M, Garofalo A, Ragno G, Grande F. Anticancer Drugs: Recent Strategies to Improve Stability Profile, Pharmacokinetic and Pharmacodynamic Properties. Molecules 2022; 27:molecules27175436. [PMID: 36080203 PMCID: PMC9457551 DOI: 10.3390/molecules27175436] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 08/23/2022] [Accepted: 08/24/2022] [Indexed: 12/20/2022] Open
Abstract
In past decades, anticancer research has led to remarkable results despite many of the approved drugs still being characterized by high systemic toxicity mainly due to the lack of tumor selectivity and present pharmacokinetic drawbacks, including low water solubility, that negatively affect the drug circulation time and bioavailability. The stability studies, performed in mild conditions during their development or under stressing exposure to high temperature, hydrolytic medium or light source, have demonstrated the sensitivity of anticancer drugs to many parameters. For this reason, the formation of degradation products is assessed both in pharmaceutical formulations and in the environment as hospital waste. To date, numerous formulations have been developed for achieving tissue-specific drug targeting and reducing toxic side effects, as well as for improving drug stability. The development of prodrugs represents a promising strategy in targeted cancer therapy for improving the selectivity, efficacy and stability of active compounds. Recent studies show that the incorporation of anticancer drugs into vesicular systems, such as polymeric micelles or cyclodextrins, or the use of nanocarriers containing chemotherapeutics that conjugate to monoclonal antibodies can improve solubility, pharmacokinetics, cellular absorption and stability. In this study, we summarize the latest advances in knowledge regarding the development of effective highly stable anticancer drugs formulated as stable prodrugs or entrapped in nanosystems.
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Affiliation(s)
| | | | | | | | | | | | - Fedora Grande
- Correspondence: (G.I.); (F.G.); Tel.: +39-0984-493268 (G.I.)
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Is hypoalbuminemia a risk factor for high-dose methotrexate toxicity in children with acute lymphoblastic leukemia? J Egypt Natl Canc Inst 2022; 34:17. [DOI: 10.1186/s43046-022-00122-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 03/17/2022] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Repeated high-dose methotrexate (HDMTX) is a critical component of contemporary childhood acute lymphoblastic leukemia (ALL) treatment regimens. Serum albumin is considered a carrier of methotrexate (MTX) in the blood. Hypoalbuminemia is not a rare finding in children with leukemia. This study aimed to investigate the relationship between pre-infusion serum albumin and possible HDMTX toxicities.
Methods
Thirty Egyptian children with ALL were consecutively enrolled in the study between May 2018 and July 2020. They were prospectively followed up while receiving HDMTX during the consolidation phase of the TOTAL study XV protocol. HDMTX was administered intravenously as a 24-h infusion every 2 weeks. Doses of 2.5 g/m2 were used for low-risk patients and 5 g/m2 for standard/high-risk patients. The Common Terminology Criteria for Adverse Events (V.4.03) was used to report the observed toxicities after HDMTX cycles. Plasma MTX levels were estimated at 24 h (MTX24) from the beginning of HDMTX infusion in the first consolidation cycle. Serum albumin level was determined before HDMTX administration, and pre-infusion hypoalbuminemia was defined when serum albumin was <3.5 g/dL.
Results
The patients’ age ranged from 2.3 to 13.3 years at diagnosis, and most of them had B cell ALL (86.7%). Overall, 120 HDMTX cycles were analyzed, equally distributed between low and standard/high risk. Grade 3–4 anemia, grades 3–4 thrombocytopenia, febrile neutropenia, and oral mucositis were significantly more frequent in HDMTX cycles with pre-infusion hypoalbuminemia than those with normal pre-infusion albumin (p=0.003, p=0.007, p=0.006, and p=0.001, respectively). In addition, pre-infusion hypoalbuminemia was significantly associated with additional hospitalization due to HDMTX toxicity (p=0.031). Most HDMTX toxicities were comparable irrespective of the MTX dose. Oral mucositis was more frequently encountered in the 2.5 g/m2 than the 5 g/m2 HDMTX cycles (46.7 vs. 26.7%, p=0.023). A significantly longer hospitalization (due to HDMTX toxicity) was observed in the 5 g/m2 HDMTX cycles (median= 7 days vs. 4 days, p=0.012).
Conclusions
Serum albumin levels should be checked before starting HDMTX cycles, especially in resource-limited settings where malnutrition is common, and serum MTX monitoring may not be available. Optimizing serum albumin levels before HDMTX may help decrease the possibility of HDMTX toxicities.
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Evaluation of the antiapoptotic and anti-inflammatory properties of chitosan in methotrexate-induced oral mucositis in rats. Mol Biol Rep 2022; 49:3237-3245. [PMID: 35064410 DOI: 10.1007/s11033-022-07158-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 01/17/2022] [Indexed: 10/19/2022]
Abstract
BACKGROUND Methotrexate (MTX), a chemotherapeutic agent, is known to cause oral mucositis. Chitosan has been shown to have a protective effect in inflammatory animal models. This research aimed to examine the protective effect of chitosan against oral mucositis caused by MTX. METHODS AND RESULTS Wistar albino rats were randomly divided into three groups. Control (n = 8), (saline via oral gavage for 5 days), MTX (n = 8), (60 mg/kg single dose MTX intraperitoneally on the 1st day and for the following 4 days saline via oral gavage), and MTX + chitosan (n = 8), (1st day single dose 60 mg/kg MTX intraperitoneally and followed with 200 mg/kg chitosan via oral gavage for 4 days). After 24 h of the last dose, the animals were euthanised. Blood, tongue, buccal and palatal mucosa tissues were collected. Serum interleukin 1-beta (IL1-β), tumour necrosis factor-alpha (TNF-α), matrix metalloproteinase (MMP-1, and MMP-2) activities, tissue bcl-2/bax ratio and the expression of caspase-3 (casp-3), and casp-9 were detected. The tissues were also examined histologically. Serum TNF-α, IL1-β, MMP-1 and MMP-2 activities and tissue casp-3 and casp-9 activities significantly increased but the bcl-2/bax ratio significantly decreased in the MTX group compared those of the control group. Histologically, diffuse inflammatory cells were observed in MTX group. However, In the MTX + chitosan group, all the values were close to those of the control group. CONCLUSION It was demonstrated that chitosan has a protective effect against oral mucosal damage caused by MTX. Thus, it may be a candidate agent against MTX induced oral mucositis.
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Guðmundsdóttir JS, Fredheim EGA, Koumans CIM, Hegstad J, Tang PC, Andersson DI, Samuelsen Ø, Johnsen PJ. The chemotherapeutic drug methotrexate selects for antibiotic resistance. EBioMedicine 2021; 74:103742. [PMID: 34902789 PMCID: PMC8671861 DOI: 10.1016/j.ebiom.2021.103742] [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: 09/04/2021] [Revised: 10/27/2021] [Accepted: 11/25/2021] [Indexed: 11/28/2022] Open
Abstract
Background Understanding drivers of antibiotic resistance evolution is fundamental for designing optimal treatment strategies and interventions to reduce the spread of antibiotic resistance. Various cytotoxic drugs used in cancer chemotherapy have antibacterial properties, but how bacterial populations are affected by these selective pressures is unknown. Here we test the hypothesis that the widely used cytotoxic drug methotrexate affects the evolution and selection of antibiotic resistance. Methods First, we determined methotrexate susceptibility (IC90) and selective abilities in a collection of Escherichia coli and Klebsiella pneumoniae strains with and without pre-existing trimethoprim resistance determinants. We constructed fluorescently labelled pairs of E. coli MG1655 differing only in trimethoprim resistance determinants and determined the minimum selective concentrations of methotrexate using flow-cytometry. We further used an experimental evolution approach to investigate the effects of methotrexate on de novo trimethoprim resistance evolution. Findings We show that methotrexate can select for acquired trimethoprim resistance determinants located on the chromosome or a plasmid. Additionally, methotrexate co-selects for genetically linked resistance determinants when present together with trimethoprim resistance on a multi-drug resistance plasmid. These selective effects occur at concentrations 40- to >320-fold below the methotrexate minimal inhibitory concentration. Interpretation Our results strongly suggest a selective role of methotrexate for virtually any antibiotic resistance determinant when present together with trimethoprim resistance on a multi-drug resistance plasmid. The presented results may have significant implications for patient groups strongly depending on effective antibiotic treatment. Funding PJJ was supported by 10.13039/100007465UiT The Arctic University of Norway and the Northern Norway Regional Health Authority (SFP1292–16/HNF1586–21) and JPI-EC-AMR (Project 271,176/H10). DIA was supported by the 10.13039/501100004359Swedish Research Council (grant 2017–01,527). The publication charges for this article have been funded by a grant from the publication fund of UiT The Arctic University of Norway.
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Affiliation(s)
- Jónína S Guðmundsdóttir
- Department of Pharmacy, Faculty of Health Sciences, UiT The Arctic University of Norway, Tromsø, Norway.
| | - Elizabeth G A Fredheim
- Department of Pharmacy, Faculty of Health Sciences, UiT The Arctic University of Norway, Tromsø, Norway
| | | | - Joachim Hegstad
- Department of Pharmacy, Faculty of Health Sciences, UiT The Arctic University of Norway, Tromsø, Norway; Research and Development Division, Department of Microbiology and Infection Control, University Hospital of North Norway, Tromsø, Norway
| | - Po-Cheng Tang
- Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - Dan I Andersson
- Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - Ørjan Samuelsen
- Department of Pharmacy, Faculty of Health Sciences, UiT The Arctic University of Norway, Tromsø, Norway; Norwegian National Advisory Unit on Detection of Antimicrobial Resistance, Department of Microbiology and Infection Control, University Hospital of North Norway, Tromsø, Norway
| | - Pål J Johnsen
- Department of Pharmacy, Faculty of Health Sciences, UiT The Arctic University of Norway, Tromsø, Norway.
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Totadri S, Srinivasan HN, Joseph LL, Boddu D, Mathew LG, John R. A single assessment of methotrexate levels at 42 hours permits safe administration and early discharge in children with lymphoblastic lymphoma and leukemia receiving high-dose methotrexate. Pediatr Hematol Oncol 2021; 38:434-443. [PMID: 33764242 DOI: 10.1080/08880018.2020.1863535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
High-dose methotrexate (HDMTX) is an important component of treatment in pediatric acute lymphoblastic leukemia (ALL) and lymphoblastic lymphoma (LL). Optimal rescue therapy is essential for the safe administration of HDMTX. A cost-effective strategy that does not compromise safety is necessary for low- and middle-income countries. Consecutive admissions for HDMTX in children with ALL and LL over 12 months were analyzed. The dose of HDMTX was 3 g/m2 in B-ALL and B-LL and 5 g/m2 in T-ALL and T-LL. A methotrexate level was measured at 42 hours of starting HDMTX infusion (T42-MTX). Three doses of folinic acid at T42, T48, and T54 and alkalinized hydration till T54 were administered if T42-MTX <1 µM. A total of 282 cycles of HDMTX that were administered in 71 patients were analyzed. T42-MTX was <1 µM in 266 (94.3%) cycles. T42-MTX was ≥1 µM in 12% and 3% of cycles of HDMTX administered at a dose of 5 g/m2 and 3 g/m2, respectively (p = .074). The median duration of hospitalization for HDM was three days and did not differ with the dose of HDMTX administered (p = .427). Mucositis, delayed recovery of blood counts, and hospitalization for reversible toxicity occurred after 21 (7.4%), 28 (9.9%), and 19 (6.7%) cycles of HDMTX, respectively. Mucositis was greater following the administration of 5 g/m2 of HDMTX. A single T42-MTX measurement permits the safe administration of HDMTX and an expedited discharge from the hospital within three days in more than 90% of children with ALL/LL.
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Affiliation(s)
- Sidharth Totadri
- Paediatric Haematology/Oncology Unit, Department of Paediatrics, Christian Medical College and Hospital, Vellore, India
| | - Hema Nalapullu Srinivasan
- Paediatric Haematology/Oncology Unit, Department of Paediatrics, Christian Medical College and Hospital, Vellore, India
| | - Leenu Lizbeth Joseph
- Paediatric Haematology/Oncology Unit, Department of Paediatrics, Christian Medical College and Hospital, Vellore, India
| | - Deepthi Boddu
- Paediatric Haematology/Oncology Unit, Department of Paediatrics, Christian Medical College and Hospital, Vellore, India
| | - Leni Grace Mathew
- Paediatric Haematology/Oncology Unit, Department of Paediatrics, Christian Medical College and Hospital, Vellore, India
| | - Rikki John
- Paediatric Haematology/Oncology Unit, Department of Paediatrics, Christian Medical College and Hospital, Vellore, India
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11
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Dalhat MH, Altayb HN, Khan MI, Choudhry H. Structural insights of human N-acetyltransferase 10 and identification of its potential novel inhibitors. Sci Rep 2021; 11:6051. [PMID: 33723305 PMCID: PMC7960695 DOI: 10.1038/s41598-021-84908-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 02/19/2021] [Indexed: 01/31/2023] Open
Abstract
N-acetyltransferase 10 (NAT10), is an acetyltransferase that regulates RNA stability and translation processes. Association of NAT10 with several diseases including cancer, makes it a promising therapeutic target. Remodelin is the only known NAT10 inhibitor, but the structural information related to its binding with NAT10 is still obscure. Here, we predicted the human NAT10 structure using homology modeling that was not available previously and used human NAT10 to identify the novel binding site(s) of Remodelin. The alignment of the modeled human NAT10 showed 24% identity and 37% positivity with crystal structure of tRNA (Met) cytidine acetyltransferase. Molecular docking showed binding of Remodelin with NAT10 in acetyl-CoA binding pocket. Additionally, we screened a library of FDA-approved drugs for the identification of novel inhibitors of NAT10 activity. Binding score showed that four drugs namely, Fosaprepitant (- 11.709), Leucal (- 10.46), Fludarabine (- 10.347) and Dantrolene (- 9.875) bind to NAT10 and have better binding capability when compared with Acetyl-CoA (- 5.691) and Remodelin (- 5.3). Acetyl-CoA, Remodelin, and others exhibit hits for hydrophobic, hydrophilic and hydrogen interactions. Interestingly, Remodelin and others interact with the amino acid residues ILE629, GLY639, GLY641, LEU719, and PHE722 in the Acetyl-CoA binding pocket of NAT10 similar to Acetyl-CoA. Our findings revealed that Fosaprepitant, Leucal, Fludarabine, and Dantrolene are promising molecules that can be tested and developed as potential inhibitors of NAT10 acetyltransferase activity.
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Affiliation(s)
- Mahmood Hassan Dalhat
- Biochemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
- Centre for Artificial Intelligence in Precision Medicine, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
- Cancer and Mutagenesis Research Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | - Hisham N Altayb
- Biochemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
- Centre for Artificial Intelligence in Precision Medicine, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
- Cancer and Mutagenesis Research Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | - Mohammad Imran Khan
- Biochemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
- Centre for Artificial Intelligence in Precision Medicine, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
- Cancer and Mutagenesis Research Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | - Hani Choudhry
- Biochemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia.
- Centre for Artificial Intelligence in Precision Medicine, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia.
- Cancer and Mutagenesis Research Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia.
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12
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Valer JB, Curra M, Gabriel ADF, Schmidt TR, Ferreira MBC, Roesler R, Evangelista JMC, Martins MAT, Gregianin L, Martins MD. Oral mucositis in childhood cancer patients receiving high-dose methotrexate: Prevalence, relationship with other toxicities and methotrexate elimination. Int J Paediatr Dent 2021; 31:238-246. [PMID: 32815183 DOI: 10.1111/ipd.12718] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 05/27/2020] [Accepted: 07/06/2020] [Indexed: 12/13/2022]
Abstract
BACKGROUND Oral mucositis (OM) is one of the main adverse effects of the chemotherapeutic agent methotrexate (MTX). AIM To evaluate the relationship of OM with MTX metabolism time and other toxicities in childhood, cancer patients receiving high-dose of methotrexate (HD-MTX). DESIGN Seventy-seven childhood patients receiving HD-MTX for treatment of leukaemia, osteosarcoma or lymphoma were evaluated. MTX serum level, hepatic and renal function parameters, and presence and intensity of OM were analysed. RESULTS The patients were submitted to 255 cycles of chemotherapy. OM was diagnosed in 191 (74.9%) cycles. Of these, 119 (46.6%) presented ulcerative lesions. Lymphoma was associated with severe OM (P = .01). OM was associated with higher serum levels of aspartate aminotransferase (P = .006), alanine aminotransferase (P = .04) and creatinine (P = .008). Increase of one unit of total bilirubin and indirect bilirubin associated, respectively, with 11% and 39% higher prevalence of OM. For each increase of one unit of creatinine serum level, it was observed a 37% higher prevalence of OM in patients with lymphoma. No association was found between delayed excretion of MTX and OM development. CONCLUSIONS OM is a prevalent complication of childhood cancer patients receiving HD-MTX. Renal and hepatic toxicity could be considered risk factors for OM, especially in patients with lymphoma.
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Affiliation(s)
- Jéssica Berté Valer
- Department of Oral Pathology and Oral Medicine, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Marina Curra
- Department of Oral Pathology and Oral Medicine, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.,School of Dentistry, University of Caxias do Sul, Caxias do Sul, RS, Brazil
| | - Amanda de Farias Gabriel
- Department of Oral Pathology and Oral Medicine, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Tuany Rafaeli Schmidt
- Department of Oral Pathology and Oral Medicine, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Maria Beatriz Cardoso Ferreira
- Full Professor of Pharmacology, Invited Professor, Department of Conservative Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Rafael Roesler
- Cancer and Neurobiology Laboratory, Experimental Research Center, Porto Alegre Clinical Hospital, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.,Children's Cancer Institute, Porto Alegre, Brazil
| | | | - Marco Antonio Trevizani Martins
- Department of Oral Pathology and Oral Medicine, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.,Department of Oral Medicine, Porto Alegre Clinical Hospital (HCPA/UFRGS), Porto Alegre, Brazil
| | - Lauro Gregianin
- Children's Cancer Institute, Porto Alegre, Brazil.,Department of Pediatric Oncology, Porto Alegre Clinicas Hospital (HCPA/UFRGS), Porto Alegre, Brazil.,Pediatric Oncology Service, Porto Alegre Clinical Hospital (HCPA/UFRGS), Porto Alegre, Brazil
| | - Manoela Domingues Martins
- Department of Oral Pathology and Oral Medicine, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.,Department of Oral Medicine, Porto Alegre Clinical Hospital (HCPA/UFRGS), Porto Alegre, Brazil
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13
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Oosterom N, Fiocco M, Kloos RQH, van der Sluis IM, Pieters R, van Zelst BD, Smith DEC, van den Heuvel-Eibrink MM, de Jonge R, Heil SG. The evaluation of red blood cell folate and methotrexate levels during protocol M in childhood acute lymphoblastic leukemia. BMC Cancer 2020; 20:940. [PMID: 32998716 PMCID: PMC7526241 DOI: 10.1186/s12885-020-07422-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 09/16/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND After High-Dose Methotrexate (HD-MTX), folinic acid rescue therapy (Leucovorin) is administered to reduce side effects in pediatric acute lymphoblastic leukemia (ALL) patients. Leucovorin and MTX are structural analogues, possibly competing for cellular transport and intracellular metabolism. We hypothesize that Leucovorin accumulates during consecutive courses, which might result in a lower MTX uptake. METHODS We prospectively measured red blood cell (RBC) folate and MTX levels during four HD-MTX and Leucovorin courses in 43 patients treated according the DCOG ALL-11 protocol with 2-weekly HD-MTX (5 g/m2/dose) and Leucovorin (15 mg/m2/dose) using LC-MS/MS. We estimated a linear mixed model to assess the relationship between these variables over time. RESULTS Both RBC MTX-PG and folate levels increased significantly during protocol M. MTX-PG2-5 levels increased most substantially after the first two HD-MTX courses (until median 113.0 nmol/L, IQR 76.8-165.2) after which levels plateaued during the 3d and 4th course (until median 141.3 nmol/L, IQR 100.2-190.2). In parallel, folate levels increased most substantially after the first two HD-MTX courses (until median 401.6 nmol/L, IQR 163.3-594.2) after which levels plateaued during the 3d and 4th course (until median 411.5 nmol/L, IQR 240.3-665.6). The ratio folate/MTX-PG decreased significantly over time, which was mostly due to the relatively higher increase (delta) of MTX-PG. CONCLUSION These results suggest that the increase in RBC folate levels does not seem to have a large effect on RBC MTX levels. Future studies, assessing competition of Leucovorin and MTX on other cellular mechanisms which might negatively affect treatment efficacy, are necessary.
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Affiliation(s)
- N Oosterom
- Princess Máxima Center for Pediatric Oncology, Postbus 113, 3720 AC Bilthoven, Utrecht, The Netherlands. .,Department of Clinical Chemistry, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.
| | - M Fiocco
- Princess Máxima Center for Pediatric Oncology, Postbus 113, 3720 AC Bilthoven, Utrecht, The Netherlands.,Mathematical Institute, Leiden University, Leiden, The Netherlands.,Department of Biomedical Data Sciences, Leiden University Medical Center, Medical Statistics, Leiden, The Netherlands
| | - R Q H Kloos
- Department of Pediatric Oncology/Hematology, Erasmus Medical Center-Sophia's Children's Hospital, Rotterdam, The Netherlands
| | - I M van der Sluis
- Princess Máxima Center for Pediatric Oncology, Postbus 113, 3720 AC Bilthoven, Utrecht, The Netherlands
| | - R Pieters
- Princess Máxima Center for Pediatric Oncology, Postbus 113, 3720 AC Bilthoven, Utrecht, The Netherlands
| | - B D van Zelst
- Department of Clinical Chemistry, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - D E C Smith
- Department of Clinical Chemistry, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | | | - R de Jonge
- Department of Clinical Chemistry, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - S G Heil
- Department of Clinical Chemistry, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
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14
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Wang G, Peng X. A Review of Clinical Applications and Side Effects of Methotrexate in Ophthalmology. J Ophthalmol 2020; 2020:1537689. [PMID: 32850138 PMCID: PMC7439192 DOI: 10.1155/2020/1537689] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 06/18/2020] [Accepted: 07/03/2020] [Indexed: 12/11/2022] Open
Abstract
Methotrexate (MTX) is a folate analog widely used against a range of diseases including malignancies and autoimmune disorders. Its high effectiveness-price ratio also won extensive application in ophthalmology. On the other hand, although MTX has an excellent pharmacological efficacy, MTX associated side effects in clinical use, which vary from patient to patient, are nonnegligible. There is no comparatively systematic review on MTX associated side effects and its risk factors. This review aimed to reveal novel clinical approaches of MTX and its adverse effects in order to provide a reference for ophthalmic scholars in clinical application of MTX.
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Affiliation(s)
- Ge Wang
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology and Visual Science Key Lab, Beijing, China
| | - Xiaoyan Peng
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology and Visual Science Key Lab, Beijing, China
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15
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Prophylactic photobiomodulation therapy using 660 nm diode laser for oral mucositis in paediatric patients under chemotherapy: 5-year experience from a Brazilian referral service. Lasers Med Sci 2020; 35:1857-1866. [PMID: 32535807 DOI: 10.1007/s10103-020-03060-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Accepted: 06/01/2020] [Indexed: 12/22/2022]
Abstract
The use of photobiomodulation therapy (PBMT) in the prevention of oral mucositis (OM) in paediatric care has increased. In this article, we report data of paediatric oncology/haematopoietic stem cell transplantation (HSCT) patients treated with PBMT to prevent chemotherapy-induced OM. A retrospective study was conducted at a Brazilian referral service. Prophylactic PBMT was used in children and adolescents (≤ 17 years) following the protocol: InGaAIP, 660 nm, 100 mW, 2 J, 3.33 W/cm2, and 20 s per point. Demographic data and OM severity scores were assessed. A regression model tested the association between OM with prophylactic PBMT and antineoplastic therapy. A total of 148 individuals who had undergone 358 chemotherapy cycles were analysed. A higher occurrence of OM was observed in HSCT and osteosarcoma (OS) patients. Except for HSCT, OM was associated with methotrexate (MTX) use in all disease groups. PBMT significantly reduced OM severity in acute lymphoblastic leukaemia (ALL) and OS patients. OM grade was 3.16 and 5.45 times higher among individuals with ALL and OS, who had not undergone prophylactic PBMT compared with those who had undergone prophylactic PBMT (p < 0.001). PBMT prevented chemotherapy-induced OM. Individuals who used MTX and did not undergo prophylactic PBMT were at increased risk of OM.
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16
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Driehuis E, Oosterom N, Heil SG, Muller IB, Lin M, Kolders S, Jansen G, de Jonge R, Pieters R, Clevers H, van den Heuvel-Eibrink MM. Patient-derived oral mucosa organoids as an in vitro model for methotrexate induced toxicity in pediatric acute lymphoblastic leukemia. PLoS One 2020; 15:e0231588. [PMID: 32421698 PMCID: PMC7233536 DOI: 10.1371/journal.pone.0231588] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 03/27/2020] [Indexed: 12/22/2022] Open
Abstract
We have recently established a protocol to grow wildtype human oral mucosa organoids. These three-dimensional structures can be maintained in culture long-term, do not require immortalization, and recapitulate the multilayered composition of the epithelial lining of the oral mucosa. Here, we validate the use of this model to study the effect of Leucovorin (LV) on Methotrexate (MTX)-induced toxicity. MTX is a chemotherapeutic agent used in the treatment of pediatric acute lymphoblastic leukemia. Although effective, the use of MTX often results in severe side-effects, including oral mucositis, which is characterized by epithelial cell death. Here, we show that organoids are sensitive to MTX, and that the addition of LV reduces MTX toxicity, in both a concentration- and timing-dependent manner. Additionally, we show that a 24 hour ‘pretreatment’ with LV reduces MTX-induced cell death, suggesting that such a pretreatment could decrease mucositis in patients. Taken together, we provide the first in vitro model to study the effect of MTX on wildtype oral mucosa cells. Our findings underscore the relevance of the clinically applied LV regimen and highlight the potential of this model to further optimize modifications in dosing and timing of Leucovorin on oral mucosa cells.
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Affiliation(s)
- E. Driehuis
- Oncode Institute, Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences (KNAW) and University Medical Center Utrecht, Utrecht, The Netherlands
| | - N. Oosterom
- Princess Máxima Center for Pediatric Oncology, Utrecht, The Netherlands
| | - S. G. Heil
- Department of Clinical Chemistry, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - I. B. Muller
- Department of Clinical Chemistry, Amsterdam UMC, Amsterdam, The Netherlands
| | - M. Lin
- Department of Clinical Chemistry, Amsterdam UMC, Amsterdam, The Netherlands
| | - S. Kolders
- Oncode Institute, Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences (KNAW) and University Medical Center Utrecht, Utrecht, The Netherlands
| | - G. Jansen
- Amsterdam Rheumatology and Immunology Center, Department of Rheumatology, Amsterdam UMC, Amsterdam, The Netherlands
| | - R. de Jonge
- Department of Clinical Chemistry, Amsterdam UMC, Amsterdam, The Netherlands
| | - R. Pieters
- Princess Máxima Center for Pediatric Oncology, Utrecht, The Netherlands
| | - H. Clevers
- Oncode Institute, Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences (KNAW) and University Medical Center Utrecht, Utrecht, The Netherlands
- Princess Máxima Center for Pediatric Oncology, Utrecht, The Netherlands
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