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Sun C, Wang X, Zheng Z, Chen D, Wang X, Shi F, Yu D, Wu H. A single dose of dexamethasone encapsulated in polyethylene glycol-coated polylactic acid nanoparticles attenuates cisplatin-induced hearing loss following round window membrane administration. Int J Nanomedicine 2015; 10:3567-79. [PMID: 25999718 PMCID: PMC4437605 DOI: 10.2147/ijn.s77912] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
This study aimed to investigate the sustained drug release properties and hearing protection effect of polyethylene glycol-coated polylactic acid (PEG-PLA) stealth nanoparticles loaded with dexamethasone (DEX). DEX was fabricated into PEG-PLA nanoparticles using an emulsion and evaporation technique, as previously reported. The DEX-loaded PEG-PLA nanoparticles (DEX-NPs) had a hydrodynamic diameter of 130±4.78 nm, and a zeta potential of −26.13±3.28 mV. The in vitro release of DEX from DEX-NPs lasted 24 days in phosphate buffered saline (pH 7.4), 5 days in artificial perilymph (pH 7.4), and 1 day in rat plasma. Coumarin 6-labeled NPs placed onto the round window membrane (RWM) of guinea pigs penetrated RWM quickly and accumulated to the organs of Corti, stria vascularis, and spiral ganglion cells after 1 hour of administration. The DEX-NPs locally applied onto the RWM of guinea pigs by a single-dose administration continuously released DEX in 48 hours, which was significantly longer than the free DEX that was cleared out within 12 hours after administration at the same dose. Further functional studies showed that locally administrated single-dose DEX-NPs effectively preserved outer hair cells in guinea pigs after cisplatin insult and thus significantly attenuated hearing loss at 4 kHz and 8 kHz frequencies when compared to the control of free DEX formulation. Histological analyses indicated that the administration of DEX-NPs did not induce local inflammatory responses. Therefore, prolonged delivery of DEX by PEG-PLA nanoparticles through local RWM diffusion (administration) significantly protected the hair cells and auditory function in guinea pigs from cisplatin toxicity, as determined at both histological and functional levels, suggesting the potential therapeutic benefits in clinical applications.
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Affiliation(s)
- Changling Sun
- Department of Otolaryngology-Head and Neck Surgery, Xinhua Hospital, Ear Institute, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, People's Republic of China ; Department of Otolaryngology-Head and Neck Surgery, Affiliated Hospital of Jiangnan University, The Fourth People's Hospital of Wuxi City, Wuxi, People's Republic of China
| | - Xueling Wang
- Department of Otolaryngology-Head and Neck Surgery, Xinhua Hospital, Ear Institute, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, People's Republic of China
| | - Zhaozhu Zheng
- National Engineering Laboratory for Modern Silk, Soochow University, Suzhou, People's Republic of China
| | - Dongye Chen
- Department of Otolaryngology-Head and Neck Surgery, Xinhua Hospital, Ear Institute, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, People's Republic of China
| | - Xiaoqin Wang
- National Engineering Laboratory for Modern Silk, Soochow University, Suzhou, People's Republic of China
| | - Fuxin Shi
- Department of Otolaryngology-Head and Neck Surgery, Xinhua Hospital, Ear Institute, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, People's Republic of China
| | - Dehong Yu
- Department of Otolaryngology-Head and Neck Surgery, Xinhua Hospital, Ear Institute, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, People's Republic of China
| | - Hao Wu
- Department of Otolaryngology-Head and Neck Surgery, Xinhua Hospital, Ear Institute, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, People's Republic of China
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Yang X, Zheng J, Song Q, Xie F, Tang J, Chen J, Wu J, Li C, Cui W, Tang Y, Xie J, Zheng J. Determination methods for the anticancer drug dicycloplatin, a supramolecule assembled through hydrogen bonding. Analyst 2015; 140:2704-12. [PMID: 25686082 DOI: 10.1039/c4an02274b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Dicycloplatin is a new generation supramolecular platinum-containing anti-cancer drug. Due to its structure, it is difficult to differentiate dicycloplatin from physical mixtures of carboplatin and cyclobutane dicarboxylate, and confounding results may arise during drug characterization. To solve this problem, this study aims to provide a reliable and reproducible standard for the determination of dicycloplatin. A simple method for dicycloplatin quality control has been developed using X-ray powder diffraction (XRPD) and high performance liquid chromatography (HPLC). XRPD allowed the control of impurities and dissociation of the dicycloplatin active ingredient to less than 1%, and HPLC allowed the monitoring and control of the relative molar ratio of carboplatin and cyclobutane dicarboxylate within the purity range. The study proved for the first time that the dicycloplatin supramolecule is substantially different from a physical mixture of carboplatin and cyclobutane dicarboxylate.
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Affiliation(s)
- Xuqing Yang
- College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
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Jie H, Tao S, Liu L, Xia L, Charko A, Yu Z, Bance M, Yin S, Robertson GS, Wang J. Cochlear protection against cisplatin by viral transfection of X-linked inhibitor of apoptosis protein across round window membrane. Gene Ther 2015; 22:546-52. [PMID: 25809464 DOI: 10.1038/gt.2015.22] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Revised: 02/15/2015] [Accepted: 02/18/2015] [Indexed: 01/23/2023]
Abstract
We have previously demonstrated that both age-related and noise-induced hearing loss are reduced in transgenic mice that ubiquitously overexpress X-linked inhibitor of apoptosis protein (XIAP). In view of the therapeutic implications of these findings, we have developed a minimally invasive surgical method to deliver adenoid-associated virus (AAV) across the round window membrane (RWM) of the cochlea, enabling efficient gene transfer to hair cells and sensory neurons in this enclosed structure. This RWM approach was used in the present study to evaluate the effectiveness of AAV-mediated XIAP overexpression in protecting against cisplatin-induced ototoxicity. Two weeks following surgery, AAV-derived XIAP was detected in the majority of inner and outer hair cells, resulting in a threefold elevation of this antiapoptotic protein in the cochlea. The protection of AAV-mediated XIAP overexpression was evaluated in animals treated with cisplatin at a dose of 4 mg kg(-1) per day for 4-7 consecutive days. The XIAP overexpression was found to attenuate cisplatin-induced hearing loss by ~22 dB. This was accompanied by a reduction of the loss of vulnerable hair cells and sensory neurons in the cochlea by 13%.
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Affiliation(s)
- H Jie
- Department of Otolaryngology, Affiliated Sixth People's Hospital of Shanghai Jiao Tong University, Shanghai, China
| | - S Tao
- Department of Physiology, Medical College, Southeast University, Nanjing, China
| | - L Liu
- Department of Physiology, Medical College, Southeast University, Nanjing, China
| | - L Xia
- Department of Otolaryngology, Affiliated Sixth People's Hospital of Shanghai Jiao Tong University, Shanghai, China
| | - A Charko
- School of Human Communication Disorder, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Z Yu
- School of Human Communication Disorder, Dalhousie University, Halifax, Nova Scotia, Canada
| | - M Bance
- Department of Surgery, Division of Otolaryngology, Dalhousie University, Halifax, Nova Scotia, Canada
| | - S Yin
- Department of Otolaryngology, Affiliated Sixth People's Hospital of Shanghai Jiao Tong University, Shanghai, China
| | - G S Robertson
- Departments of Psychiatry and Pharmacology, Dalhousie University, Halifax, Nova Scotia, Canada
| | - J Wang
- 1] Department of Otolaryngology, Affiliated Sixth People's Hospital of Shanghai Jiao Tong University, Shanghai, China [2] School of Human Communication Disorder, Dalhousie University, Halifax, Nova Scotia, Canada
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Ma W, Hu J, Cheng Y, Wang J, Zhang X, Xu M. Ginkgolide B protects against cisplatin-induced ototoxicity: enhancement of Akt–Nrf2–HO-1 signaling and reduction of NADPH oxidase. Cancer Chemother Pharmacol 2015; 75:949-59. [DOI: 10.1007/s00280-015-2716-9] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Accepted: 02/24/2015] [Indexed: 12/12/2022]
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Cannizzaro E, Cannizzaro C, Plescia F, Martines F, Soleo L, Pira E, Lo Coco D. Exposure to ototoxic agents and hearing loss: A review of current knowledge. HEARING BALANCE AND COMMUNICATION 2014. [DOI: 10.3109/21695717.2014.964939] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Potential survival markers in cancer patients undergoing chemotherapy. Clin Exp Med 2014; 15:381-7. [PMID: 25261922 DOI: 10.1007/s10238-014-0313-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Accepted: 09/15/2014] [Indexed: 12/28/2022]
Abstract
Due to the importance of the identification of chemotherapy outcome prognostic factors, we attempted to establish the potential of oxidative stress/DNA damage parameters such as prognostic markers. The aim of the study was to determine whether platinum derivative-based chemotherapy in cancer patients (n = 66) is responsible for systemic oxidatively damaged DNA and whether damage biomarkers, such as 8-oxo-7,8-dihydro-2'-deoxyguanosine (8-oxo-dG) and the modified base 8-oxo-7,8-dihydroguanine (8-oxo-Gua), in urine and DNA may be used as a prognostic factor for the outcome of chemotherapy. All the aforementioned modifications were analyzed using techniques involving high-performance liquid chromatography/electrochemical detection (HPLC/EC) or HPLC/gas chromatography-mass spectrometry (GC-MS). Among all the analyzed parameters, the significantly decreased levels of 8-oxo-Gua in urine collected from a subgroup of patients 24 h after the first infusion of the drug, as compared with the baseline levels, correlated with a significantly longer overall survival (OS) (60 months after therapy) than in the subgroup without any decrease of this parameter after therapy (median OS = 24 months, p = 0.007). Moreover, a significantly longer OS was also observed in a group with increased urine levels of 8-oxo-dG after chemotherapy (38.6 vs. 20.5 months, p = 0.03). The results of our study suggest that patients with decreased 8-oxo-Gua levels and increased 8-oxo-dG levels in urine 24 h after the first dose should be considered as better responders to the administered chemotherapy, with a lower risk of death. The conclusion may permit the use of these parameters as markers for predicting the clinical outcome of platinum derivative-based chemotherapy.
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Cuna V, Battaglino G, Capelli I, Sala E, Donati G, Cianciolo G, La Manna G. Hypoacusia and Chronic Renal Dysfunction: New Etiopathogenetic Prospective. Ther Apher Dial 2014; 19:111-8. [DOI: 10.1111/1744-9987.12232] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Vania Cuna
- Department of Experimental Diagnostic and Specialty Medicine (DIMES); Nephrology, Dialysis and Renal Transplant Unit; St Orsola Hospital; University of Bologna; Bologna Italy
| | - Giuseppe Battaglino
- Department of Experimental Diagnostic and Specialty Medicine (DIMES); Nephrology, Dialysis and Renal Transplant Unit; St Orsola Hospital; University of Bologna; Bologna Italy
| | - Irene Capelli
- Department of Experimental Diagnostic and Specialty Medicine (DIMES); Nephrology, Dialysis and Renal Transplant Unit; St Orsola Hospital; University of Bologna; Bologna Italy
| | - Elisa Sala
- Department of Experimental Diagnostic and Specialty Medicine (DIMES); Nephrology, Dialysis and Renal Transplant Unit; St Orsola Hospital; University of Bologna; Bologna Italy
| | - Gabriele Donati
- Department of Experimental Diagnostic and Specialty Medicine (DIMES); Nephrology, Dialysis and Renal Transplant Unit; St Orsola Hospital; University of Bologna; Bologna Italy
| | - Giuseppe Cianciolo
- Department of Experimental Diagnostic and Specialty Medicine (DIMES); Nephrology, Dialysis and Renal Transplant Unit; St Orsola Hospital; University of Bologna; Bologna Italy
| | - Gaetano La Manna
- Department of Experimental Diagnostic and Specialty Medicine (DIMES); Nephrology, Dialysis and Renal Transplant Unit; St Orsola Hospital; University of Bologna; Bologna Italy
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Mohan S, Smyth BJ, Namin A, Phillips G, Gratton MA. Targeted Amelioration of Cisplatin-Induced Ototoxicity in Guinea Pigs. Otolaryngol Head Neck Surg 2014; 151:836-9. [DOI: 10.1177/0194599814544877] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
This pilot study compared otoprotection provided by trans-tympanic formulations and systemic intraperitoneal administration of L-N-acetylcysteine from cisplatin-induced cochlear oxidative stress. Protection was assessed by measures of hearing loss and cochlear glutathione levels. All groups received an equivalent single dose of L-N-acetylcysteine followed by cisplatin. Cisplatin was administered subcutaneously for 3 days (5.5 mg/kg/day). Two hours prior to day 1 cisplatin, L-N-acetylcysteine was administered either intraperitoneally (250 mg/kg), trans-tympanic as 2% L-N-acetylcysteine in gel, or trans-tympanic as L-N-acetylcysteine–loaded nanocapsules in gel. Hearing was assessed prior to and 3 days after cisplatin followed by microdissection of cochlear tissue. The levels of reduced (GSH) and oxidized (GSSG) glutathione in homogenized tissue supernatants were determined via luminometry. Intraperitoneal L-N-acetylcysteine administration preceding cisplatin resulted in less hearing loss and a higher GSH/GSSG ratio than either trans-tympanic formulation. This suggests that for equivalent doses of L-N-acetylcysteine, systemic rather than targeted cochlear delivery provides increased otoprotection from cisplatin ototoxicity.
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Affiliation(s)
- Shaulnie Mohan
- Department of Otolaryngology–Head & Neck Surgery, Saint Louis University, Saint Louis, Missouri, USA
| | | | - Arya Namin
- Department of Otolaryngology–Head & Neck Surgery, Saint Louis University, Saint Louis, Missouri, USA
| | - Grady Phillips
- Department of Otolaryngology–Head & Neck Surgery, Saint Louis University, Saint Louis, Missouri, USA
| | - Michael Anne Gratton
- Department of Otolaryngology–Head & Neck Surgery, Saint Louis University, Saint Louis, Missouri, USA
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Prevention and restoration of hearing loss associated with the use of cisplatin. BIOMED RESEARCH INTERNATIONAL 2014; 2014:925485. [PMID: 25140325 PMCID: PMC4129932 DOI: 10.1155/2014/925485] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/02/2014] [Accepted: 07/10/2014] [Indexed: 01/05/2023]
Abstract
Background. Cisplatin is a well known platinum-based chemotherapeutic agent used for the treatment of various malignant tumours. A frequent side effect of cisplatin therapy is ototoxicity. Unfortunately, currently there are no available treatments. Material and Methods. Experimental, clinical studies and reviews published between 2004 and 2014 in the English medical literature concerning ototoxicity were selected using Medline, PubMed, and Google Scholar databases. Inclusion criteria were cisplatin-induced ototoxicity and therapy aimed at preventing or curing this disorder. Molecular mechanisms and clinical, audiological, and histological markers of cisplatin-induced ototoxicity are described. Moreover, experimental and clinical strategies for prevention or treatment of hearing loss were also reviewed. Results and Discussion. Experimental studies demonstrate a wide range of otoprotective molecules and strategies efficient against cisplatin-induced hearing loss. However, only dexamethasone proved a slight otoprotective effect in a clinical study. Conclusion. Further research must be completed to bring future therapeutic options into clinical setting.
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Cho SI, Lee JH, Park JH, Do NY. Protective effect of (-)-epigallocatechin-3-gallate against cisplatin-induced ototoxicity. J Laryngol Otol 2014; 128:1-6. [PMID: 24735939 DOI: 10.1017/s0022215114000553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Objective: Ototoxicity due to cisplatin therapy interferes with treatment and often forces a reduction in the dosage, duration and frequency of the cisplatin therapy. (-)-Epigallocatechin-3-gallate is known to have the highest antioxidant potency among all tea catechins. This study aimed to investigate the effect of (-)-epigallocatechin-3-gallate on cisplatin ototoxicity in an auditory cell line: House Ear Institute-Organ of Corti 1 cells. Methods: Cultured House Ear Institute-Organ of Corti 1 cells were exposed to cisplatin with or without pre-treatment with (-)-epigallocatechin-3-gallate. Cell viability was evaluated using a 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay. Hoechst 33258 staining was used to identify cells undergoing apoptosis. Western blot analysis was conducted to determine whether (-)-epigallocatechin-3-gallate inhibited cisplatin-induced caspase activation. Intracellular reactive oxygen species production was examined to investigate whether (-)-epigallocatechin-3-gallate was capable of scavenging cisplatin-induced reactive oxygen species accumulation. Results: Cell viability significantly increased in cells pre-treated with (-)-epigallocatechin-3-gallate compared with cells exposed to cisplatin alone. Cisplatin increased cleaved caspase-3 on Western blot analysis; however, pre-treatment with (-)-epigallocatechin-3-gallate inhibited the expression of caspase-3. (-)-Epigallocatechin-3-gallate attenuated reactive oxygen species production and apoptosis in House Ear Institute-Organ of Corti 1 cells. Conclusion: (-)-Epigallocatechin-3-gallate protected against cisplatin cytotoxicity through anti-apoptotic and anti-oxidative effects. Therefore, (-)-epigallocatechin-3-gallate could play a preventive role in cisplatin-induced ototoxicity.
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Affiliation(s)
- S I Cho
- Department of Otolaryngology-Head and Neck Surgery, Chosun University School of Medicine, Gwangju, South Korea
| | - J H Lee
- Department of Otolaryngology-Head and Neck Surgery, Chosun University School of Medicine, Gwangju, South Korea
| | - J H Park
- Department of Otolaryngology-Head and Neck Surgery, Chosun University School of Medicine, Gwangju, South Korea
| | - N Y Do
- Department of Otolaryngology-Head and Neck Surgery, Chosun University School of Medicine, Gwangju, South Korea
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ENT's part in the UK's ‘Medical Oscars’. The Journal of Laryngology & Otology 2013; 127:535. [DOI: 10.1017/s0022215113001199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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