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Hirano SI, Takefuji Y. Molecular Hydrogen Protects against Various Tissue Injuries from Side Effects of Anticancer Drugs by Reducing Oxidative Stress and Inflammation. Biomedicines 2024; 12:1591. [PMID: 39062164 PMCID: PMC11274581 DOI: 10.3390/biomedicines12071591] [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: 05/08/2024] [Revised: 07/07/2024] [Accepted: 07/15/2024] [Indexed: 07/28/2024] Open
Abstract
While drug therapy plays a crucial role in cancer treatment, many anticancer drugs, particularly cytotoxic and molecular-targeted drugs, cause severe side effects, which often limit the dosage of these drugs. Efforts have been made to alleviate these side effects by developing derivatives, analogues, and liposome formulations of existing anticancer drugs and by combining anticancer drugs with substances that reduce side effects. However, these approaches have not been sufficiently effective in reducing side effects. Molecular hydrogen (H2) has shown promise in this regard. It directly reduces reactive oxygen species, which have very strong oxidative capacity, and indirectly exerts antioxidant, anti-inflammatory, and anti-apoptotic effects by regulating gene expression. Its clinical application in various diseases has been expanded worldwide. Although H2 has been reported to reduce the side effects of anticancer drugs in animal studies and clinical trials, the underlying molecular mechanisms remain unclear. Our comprehensive literature review revealed that H2 protects against tissue injuries induced by cisplatin, oxaliplatin, doxorubicin, bleomycin, and gefitinib. The underlying mechanisms involve reductions in oxidative stress and inflammation. H2 itself exhibits anticancer activity. Therefore, the combination of H2 and anticancer drugs has the potential to reduce the side effects of anticancer drugs and enhance their anticancer activities. This is an exciting prospect for future cancer treatments.
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Affiliation(s)
- Shin-ichi Hirano
- Independent Researcher, 5-8-1-207 Honson, Chigasaki 253-0042, Japan
| | - Yoshiyasu Takefuji
- Keio University, 2-15-45 Mita, Minato-ku, Tokyo 108-8345, Japan;
- Faculty of Data Science, Musashino University, 3-3-3 Ariake, Koto-Ku, Tokyo 135-8181, Japan
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Guo Y, Xue L, Tang W, Xiong J, Chen D, Dai Y, Wu C, Wei S, Dai J, Wu M, Wang S. Ovarian microenvironment: challenges and opportunities in protecting against chemotherapy-associated ovarian damage. Hum Reprod Update 2024:dmae020. [PMID: 38942605 DOI: 10.1093/humupd/dmae020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 04/27/2024] [Indexed: 06/30/2024] Open
Abstract
BACKGROUND Chemotherapy-associated ovarian damage (CAOD) is one of the most feared short- and long-term side effects of anticancer treatment in premenopausal women. Accumulating detailed data show that different chemotherapy regimens can lead to disturbance of ovarian hormone levels, reduced or lost fertility, and an increased risk of early menopause. Previous studies have often focused on the direct effects of chemotherapeutic drugs on ovarian follicles, such as direct DNA damage-mediated apoptotic death and primordial follicle burnout. Emerging evidence has revealed an imbalance in the ovarian microenvironment during chemotherapy. The ovarian microenvironment provides nutritional support and transportation of signals that stimulate the growth and development of follicles, ovulation, and corpus luteum formation. The close interaction between the ovarian microenvironment and follicles can determine ovarian function. Therefore, designing novel and precise strategies to manipulate the ovarian microenvironment may be a new strategy to protect ovarian function during chemotherapy. OBJECTIVE AND RATIONALE This review details the changes that occur in the ovarian microenvironment during chemotherapy and emphasizes the importance of developing new therapeutics that protect ovarian function by targeting the ovarian microenvironment during chemotherapy. SEARCH METHODS A comprehensive review of the literature was performed by searching PubMed up to April 2024. Search terms included 'ovarian microenvironment' (ovarian extracellular matrix, ovarian stromal cells, ovarian interstitial, ovarian blood vessels, ovarian lymphatic vessels, ovarian macrophages, ovarian lymphocytes, ovarian immune cytokines, ovarian oxidative stress, ovarian reactive oxygen species, ovarian senescence cells, ovarian senescence-associated secretory phenotypes, ovarian oogonial stem cells, ovarian stem cells), terms related to ovarian function (reproductive health, fertility, infertility, fecundity, ovarian reserve, ovarian function, menopause, decreased ovarian reserve, premature ovarian insufficiency/failure), and terms related to chemotherapy (cyclophosphamide, lfosfamide, chlormethine, chlorambucil, busulfan, melphalan, procarbazine, cisplatin, doxorubicin, carboplatin, taxane, paclitaxel, docetaxel, 5-fluorouraci, vincristine, methotrexate, dactinomycin, bleomycin, mercaptopurine). OUTCOMES The ovarian microenvironment shows great changes during chemotherapy, inducing extracellular matrix deposition and stromal fibrosis, angiogenesis disorders, immune microenvironment disturbance, oxidative stress imbalances, ovarian stem cell exhaustion, and cell senescence, thereby lowering the quantity and quality of ovarian follicles. Several methods targeting the ovarian microenvironment have been adopted to prevent and treat CAOD, such as stem cell therapy and the use of free radical scavengers, senolytherapies, immunomodulators, and proangiogenic factors. WIDER IMPLICATIONS Ovarian function is determined by its 'seeds' (follicles) and 'soil' (ovarian microenvironment). The ovarian microenvironment has been reported to play a vital role in CAOD and targeting the ovarian microenvironment may present potential therapeutic approaches for CAOD. However, the relation between the ovarian microenvironment, its regulatory networks, and CAOD needs to be further studied. A better understanding of these issues could be helpful in explaining the pathogenesis of CAOD and creating innovative strategies for counteracting the effects exerted on ovarian function. Our aim is that this narrative review of CAOD will stimulate more research in this important field. REGISTRATION NUMBER Not applicable.
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Affiliation(s)
- Yican Guo
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
- National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, Hubei, China
- Key Laboratory of Cancer Invasion and Metastasis, Ministry of Education, Wuhan, Hubei, China
| | - Liru Xue
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
- National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, Hubei, China
- Key Laboratory of Cancer Invasion and Metastasis, Ministry of Education, Wuhan, Hubei, China
| | - Weicheng Tang
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
- National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, Hubei, China
- Key Laboratory of Cancer Invasion and Metastasis, Ministry of Education, Wuhan, Hubei, China
| | - Jiaqiang Xiong
- Department of Obstetrics and Gynecology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Dan Chen
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
- National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, Hubei, China
- Key Laboratory of Cancer Invasion and Metastasis, Ministry of Education, Wuhan, Hubei, China
| | - Yun Dai
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
- National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, Hubei, China
- Key Laboratory of Cancer Invasion and Metastasis, Ministry of Education, Wuhan, Hubei, China
| | - Chuqing Wu
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
- National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, Hubei, China
- Key Laboratory of Cancer Invasion and Metastasis, Ministry of Education, Wuhan, Hubei, China
| | - Simin Wei
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
- National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, Hubei, China
- Key Laboratory of Cancer Invasion and Metastasis, Ministry of Education, Wuhan, Hubei, China
| | - Jun Dai
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
- National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, Hubei, China
- Key Laboratory of Cancer Invasion and Metastasis, Ministry of Education, Wuhan, Hubei, China
| | - Meng Wu
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
- National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, Hubei, China
- Key Laboratory of Cancer Invasion and Metastasis, Ministry of Education, Wuhan, Hubei, China
| | - Shixuan Wang
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
- National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, Hubei, China
- Key Laboratory of Cancer Invasion and Metastasis, Ministry of Education, Wuhan, Hubei, China
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Okada M, Ogawa H, Takagi T, Nishihara E, Yoshida T, Hyodo J, Shinomori Y, Honda N, Fujiwara T, Teraoka M, Yamada H, Hirano SI, Hato N. A double-blinded, randomized controlled clinical trial of hydrogen inhalation therapy for idiopathic sudden sensorineural hearing loss. Front Neurosci 2022; 16:1024634. [PMID: 36507329 PMCID: PMC9731512 DOI: 10.3389/fnins.2022.1024634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Accepted: 11/08/2022] [Indexed: 11/25/2022] Open
Abstract
Background Hydrogen (H2) has been reported to be effective in reducing hearing loss due to several causes in animal studies. However, no study has examined the effectiveness of H2 in treating hearing loss in humans. Thus, we investigated whether H2 is effective for the treatment of idiopathic sudden sensorineural hearing loss (ISSNHL). Materials and methods We conducted a double-blind randomized controlled trial at six hospitals between June 2019 and March 2022. The study protocol and trial registration have been published in the Japan Registry of Clinical Trials (jRCT, No. jRCTs06119004). We randomly assigned patients with ISSNHL to receive either H2 (H2 group) or air as a placebo (control group) through inhalation combined with the administration of systemic glucocorticoids and prostaglandin E1. The primary outcome was the hearing threshold and changes in hearing threshold 3 months after therapy. In contrast, the secondary outcomes included the proportion of patients with a good prognosis (complete recovery or marked improvement). Results Sixty-five patients with ISSNHL (31 and 34 in the H2 and control groups, respectively) were included in this study. The hearing threshold 3 months after treatment was not significantly different between the groups; 39.0 decibels (dB) (95% confidence interval [CI]: 28.7-49.3) and 49.5 dB (95% CI: 40.3-58.7) in the H2 and control groups, respectively. In contrast, the changes in hearing threshold 3 months after treatment was 32.7 dB (95% CI: 24.2-41.3) and 24.2 dB (95% CI: 18.1-30.3) in the H2 and control groups, respectively. Consequently, the changes in hearing threshold were significantly better in the H2 group than in the control group (P = 0.048). However, no adverse effects due to the inhalation of H2 gas have been reported. Conclusion This is the first study to investigate the efficacy of H2 for the treatment of ISSNHL in humans. The results suggest that H2 therapy may be effective for ISSNHL treatment. Clinical trial registration [https://jrct.niph.go.jp/re/reports/detail/10442], identifier [jRCTs06119004].
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Affiliation(s)
- Masahiro Okada
- Department of Otolaryngology, Head and Neck Surgery, Ehime University Graduate School of Medicine, Toon, Japan,*Correspondence: Masahiro Okada,
| | - Hideo Ogawa
- Department of Otolaryngology, Head and Neck Surgery, Ehime Prefectural Central Hospital, Matsuyama, Japan
| | - Taro Takagi
- Department of Otolaryngology, Head and Neck Surgery, Ehime University Graduate School of Medicine, Toon, Japan,Department of Otolaryngology, Ehime Prefectural Niihama Hospital, Niihama, Japan
| | - Eriko Nishihara
- Department of Otolaryngology, Head and Neck Surgery, Ehime University Graduate School of Medicine, Toon, Japan,Department of Otolaryngology, Ehime Prefectural Niihama Hospital, Niihama, Japan
| | - Tadashi Yoshida
- Department of Otolaryngology, Head and Neck Surgery, Uwajima City Hospital, Uwajima, Japan
| | - Jun Hyodo
- Department of Otolaryngology, Takanoko Hospital, Matsuyama, Japan
| | - Yusuke Shinomori
- Department of Otolaryngology, Matsuyama Red Cross Hospital, Matsuyama, Japan
| | - Nobumitsu Honda
- Department of Otolaryngology, Head and Neck Surgery, Ehime Prefectural Central Hospital, Matsuyama, Japan
| | - Takashi Fujiwara
- Department of Public Health Research, Kurashiki Clinical Research Institute, Kurashiki, Japan
| | - Masato Teraoka
- Department of Otolaryngology, Head and Neck Surgery, Ehime University Graduate School of Medicine, Toon, Japan
| | - Hiroyuki Yamada
- Department of Otolaryngology, Head and Neck Surgery, Ehime University Graduate School of Medicine, Toon, Japan
| | - Shin-ichi Hirano
- Department of Research and Development, MiZ Company Limited, Kamakura, Japan
| | - Naohito Hato
- Department of Otolaryngology, Head and Neck Surgery, Ehime University Graduate School of Medicine, Toon, Japan
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Yang T, Li W, Peng A, Liu J, Wang Q. Exosomes Derived from Bone Marrow-Mesenchymal Stem Cells Attenuates Cisplatin-Induced Ototoxicity in a Mouse Model. J Clin Med 2022; 11:jcm11164743. [PMID: 36012982 PMCID: PMC9409675 DOI: 10.3390/jcm11164743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 07/25/2022] [Accepted: 07/31/2022] [Indexed: 11/16/2022] Open
Abstract
Background: Both hypoxia preconditioning and exosomes derived from bone marrow mesenchymal stem cells (BMSC-Exo) have been adopted to alleviate hair-loss-related ototoxicity. Whether hypoxic BMSCs-derived exosomes (hypBMSC-Exo) could alleviate cisplatin-induced ototoxicity is investigated in this study. Methods: Cisplatin intraperitoneally injected C57BL/6 mice were trans-tympanically administered BMSC-Exo or hypBMSC-Exo in the left ear. Myosin 7a staining was utilized to detect mature hair cells. Auditory brainstem response (ABR) was assessed to indicate auditory sensitivity at 8, 16, 24, and 32 kHz. The relative expressions of hypoxia-inducible factor-1α (HIF-1α), superoxide dismutase 1 (SOD1), and SOD2 were determined with RT-PCR and Western blot. The content of hydrogen peroxide (H2O2), malondialdehyde (MDA), SOD, and glutathione (GSH) in the middle turns of the cochlea were measured. Results: Up-regulated HIF-1α expression was observed in hypBMSC-Exo compared with BMSC-Exo. Diminished auditory sensitivity and increased hair cell loss was observed in the cisplatin-exposed mice with increased content of H2O2 and MDA and decreased content of SOD and GSH, which could be reversed by hypBMSC-Exo or BMSC-Exo administration. It is worth noting that hypBMSC-Exo demonstrated more treatment benefits than BMSC-Exo with up-regulated SOD1 and SOD2 expression in the middle turns of the cochlea tissues. Conclusions: Hypoxic preconditioning may provide a new therapeutic option in regenerative medicine, and hypBMSC-Exo could be utilized to alleviate cisplatin-induced ototoxicity.
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Affiliation(s)
| | | | | | | | - Qin Wang
- Correspondence: ; Tel.: +86-13808419552
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Kong X, Lu T, Lu YY, Yin Z, Xu K. Effect of Hydrogen Inhalation Therapy on Hearing Loss of Patients With Nasopharyngeal Carcinoma After Radiotherapy. Front Med (Lausanne) 2022; 9:828370. [PMID: 35433731 PMCID: PMC9008775 DOI: 10.3389/fmed.2022.828370] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 01/28/2022] [Indexed: 01/10/2023] Open
Abstract
Objective To evaluate the clinical efficacy and safety of hydrogen inhalation in improving hearing loss in patients with long-term survival of nasopharyngeal carcinoma after radiotherapy. Methods The eustachian tube dysfunction score, pure tone air conduction threshold, bone conduction threshold, the score of tympanogram and otoscope were prospectively observed in patients with deafness after radiotherapy only or combined radiotherapy and chemotherapy for nasopharyngeal carcinoma. Paired t test and one-way analysis of variance were used to analyze the data before and after treatment. Results A total of 17 patients were observed. The median time from radiotherapy to now was 228 months, and the median time from the diagnose of deafness to now was 92 months. After 4 weeks of hydrogen inhalation, the score of eustachian tube dysfunction, air conduction and bone conduction hearing thresholds were significantly reduced, P values were 0.0293, 0.0027, 0.0404, respectively. The mean air-bone gap, the score of otoendoscopy and tympanogram were also decreased, but the differences were not significant (P = 0.2079, P = 0.0536, P = 0.1056). Patients with radiotherapy alone and concurrent chemo-radiotherapy had significantly lower air conduction hearing threshold after hydrogen absorption (P = 0.0142, P = 0.0495). The results of air and bone hearing thresholds before, 4 and 12 weeks after hydrogen inhalation showed a descending trend. The air and bone hearing thresholds before hydrogen inhalation were 74.69 ± 27.03 dB and 45.70 ± 21.58 dB, respectively. At the 12th week, the mean values of air and bone hearing thresholds were the lowest, which were 66.88 ± 20.88 dB and 40.94 ± 18.93 dB, respectively, but there was no significant difference in air and bone hearing thresholds among all groups (P = 0.6755, P = 0.7712). After hydrogen inhalation treatment, no adverse reactions such as nosebleed, chest pain, dyspnea, nausea, vomiting, dizziness, earache and allergic reaction were observed. Conclusion This is the first prospective study on the effect of hydrogen inhalation on hearing improvement in patients with deafness after radiotherapy/chemotherapy for nasopharyngeal carcinoma, suggesting that continuous hydrogen inhalation may be an alternative rehabilitation therapy for these patients.
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Affiliation(s)
- Xiaofeng Kong
- Hydrogen Medicine Institute, The Biomedical Translational Research Institute, Jinan University, Guangzhou, China
| | - Tianyu Lu
- Department of Oncology, Fuda Cancer Hospital, Jinan University, Guangzhou, China
| | - You-Yong Lu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Laboratory of Molecular Oncology, Peking University Cancer Hospital & Institute, Beijing, China
| | - Zhinan Yin
- Faculty of Medical Science, The Biomedical Translational Research Institute, Jinan University, Guangzhou, China
| | - Kecheng Xu
- Department of Oncology, Fuda Cancer Hospital, Jinan University, Guangzhou, China
- *Correspondence: Kecheng Xu
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Wu J, Xiong Y, Xu B, Huang Z, Cheng X. Dioscorea deltoidea Leaf Extract (DDLE) Attenuates Cisplatin-Induced Ovarian Injury via Regulation of Oxidative Stress. DOKL BIOCHEM BIOPHYS 2021; 499:282-288. [PMID: 34426927 DOI: 10.1134/s1607672921040086] [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: 04/08/2021] [Revised: 04/15/2021] [Accepted: 04/18/2021] [Indexed: 11/23/2022]
Abstract
The present study investigated Dioscorea deltoidea leaf extract (DDLE) for treatment of cisplatin-induced ovarian injury in rat model. DDLE treatment of the cisplatin-induced ovarian injury rats suppressed Follicle-stimulating hormone (FSH) release and promoted the estrogen E2 level in serum samples. Development of follicles was increased while as damage to ovarian cortex on day 14, 28, and 42 was inhibited in cisplatin-induced ovarian injury rats on treatment with DDLE. In cisplatin-induced ovarian injury rat model oxidative stress showed a significant increase because of reduction in the level of antioxidant enzyme activity. However, DDLE treatment led to a prominent increase in activity of antioxidant enzyme compared to the control group. Moreover, DDLE treatment regulated the expression of Nuclear factor erythroid 2-related factor 2 protein in cisplatin-induced ovarian injury rats. In conclusion, DDLE treatment prevents cisplatin-induced ovarian injury through inhibition of malondialdehyde (MDA) level and upregulation of superoxide dismutase (SOD) and catalase (CAT) activity.
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Affiliation(s)
- JiaYing Wu
- Department of Gynaecology and Obstetrics, Zhejiang Xinda Hospital, 313000, Huzhou, Zhejiang, China
| | - Ying Xiong
- Department of Gynecologic, The General Hospital of Ningxia Medical University, 750004, Yingchuan, Ningxia, China
| | - Bin Xu
- Department of Gynaecology and Obstetrics, Huzhou Central Hospital, Zhejiang province, 313000, Huzhou, Zhejiang, China
| | - ZhenMin Huang
- Department of Respiratory, Huzhou Central Hospital, Zhejiang province, 313000, Huzhou, Zhejiang, China
| | - XiaoFang Cheng
- Provide Outpatient Service, Huzhou Central Hospital, Zhejiang Province, 313000, Huzhou, Zhejiang, China.
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Pirttilä K, Videhult Pierre P, Haglöf J, Engskog M, Hedeland M, Laurell G, Arvidsson T, Pettersson C. An LCMS-based untargeted metabolomics protocol for cochlear perilymph: highlighting metabolic effects of hydrogen gas on the inner ear of noise exposed Guinea pigs. Metabolomics 2019; 15:138. [PMID: 31587113 PMCID: PMC6778533 DOI: 10.1007/s11306-019-1595-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Accepted: 09/25/2019] [Indexed: 12/28/2022]
Abstract
INTRODUCTION Noise-induced hearing loss (NIHL) is an increasing problem in society and accounts for a third of all cases of acquired hearing loss. NIHL is caused by formation of reactive oxygen species (ROS) in the cochlea causing oxidative stress. Hydrogen gas (H2) can alleviate the damage caused by oxidative stress and can be easily administered through inhalation. OBJECTIVES To present a protocol for untargeted metabolomics of guinea pig perilymph and investigate the effect of H2 administration on the perilymph metabolome of noise exposed guinea pigs. METHODS The left ear of guinea pigs were exposed to hazardous impulse noise only (Noise, n = 10), noise and H2 (Noise + H2, n = 10), only H2 (H2, n = 4), or untreated (Control, n = 2). Scala tympani perilymph was sampled from the cochlea of both ears. The polar component of the perilymph metabolome was analyzed using a HILIC-UHPLC-Q-TOF-MS-based untargeted metabolomics protocol. Multivariate data analysis (MVDA) was performed separately for the exposed- and unexposed ear. RESULTS MVDA allowed separation of groups Noise and Noise + H2 in both the exposed and unexposed ear and yielded 15 metabolites with differentiating relative abundances. Seven were found in both exposed and unexposed ear data and included two osmoprotectants. Eight metabolites were unique to the unexposed ear and included a number of short-chain acylcarnitines. CONCLUSIONS A HILIC-UHPLC-Q-TOF-MS-based protocol for untargeted metabolomics of perilymph is presented and shown to be fit-for-purpose. We found a clear difference in the perilymph metabolome of noise exposed guinea pigs with and without H2 treatment.
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Affiliation(s)
- Kristian Pirttilä
- Department of Medicinal Chemistry, Uppsala University, Uppsala, Sweden.
| | - Pernilla Videhult Pierre
- Division of Audiology, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
| | - Jakob Haglöf
- Department of Medicinal Chemistry, Uppsala University, Uppsala, Sweden
| | - Mikael Engskog
- Department of Medicinal Chemistry, Uppsala University, Uppsala, Sweden
| | - Mikael Hedeland
- Department of Medicinal Chemistry, Uppsala University, Uppsala, Sweden
| | - Göran Laurell
- Department of Surgical Science, Uppsala University, Uppsala, Sweden
| | | | - Curt Pettersson
- Department of Medicinal Chemistry, Uppsala University, Uppsala, Sweden
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Khadrawy YA, El-Gizawy MM, Sorour SM, Sawie HG, Hosny EN. Effect of curcumin nanoparticles on the cisplatin-induced neurotoxicity in rat. Drug Chem Toxicol 2018; 42:194-202. [DOI: 10.1080/01480545.2018.1504058] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
| | | | - Safwa M. Sorour
- Department of Pharmacology, Faculty of Medicine, Benha University, Benha, Egypt
| | - Hussein G. Sawie
- Medical Physiology Department, National Research Centre, Giza, Egypt
| | - Eman N. Hosny
- Medical Physiology Department, National Research Centre, Giza, Egypt
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Fransson AE, Kisiel M, Pirttilä K, Pettersson C, Videhult Pierre P, Laurell GFE. Hydrogen Inhalation Protects against Ototoxicity Induced by Intravenous Cisplatin in the Guinea Pig. Front Cell Neurosci 2017; 11:280. [PMID: 28955207 PMCID: PMC5601388 DOI: 10.3389/fncel.2017.00280] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Accepted: 08/29/2017] [Indexed: 11/13/2022] Open
Abstract
Introduction: Permanent hearing loss and tinnitus as side-effects from treatment with the anticancer drug cisplatin is a clinical problem. Ototoxicity may be reduced by co-administration of an otoprotective agent, but the results in humans have so far been modest. Aim: The present preclinical in vivo study aimed to explore the protective efficacy of hydrogen (H2) inhalation on ototoxicity induced by intravenous cisplatin. Materials and Methods: Albino guinea pigs were divided into four groups. The Cispt (n = 11) and Cispt+H2 (n = 11) groups were given intravenous cisplatin (8 mg/kg b.w., injection rate 0.2 ml/min). Immediately after, the Cispt+H2 group also received gaseous H2 (2% in air, 60 min). The H2 group (n = 5) received only H2 and the Control group (n = 7) received neither cisplatin nor H2. Ototoxicity was assessed by measuring frequency specific ABR thresholds before and 96 h after treatment, loss of inner (IHCs) and outer (OHCs) hair cells, and by performing densitometry-based immunohistochemistry analysis of cochlear synaptophysin, organic transporter 2 (OCT2), and copper transporter 1 (CTR1) at 12 and 7 mm from the round window. By utilizing metabolomics analysis of perilymph the change of metabolites in the perilymph was assessed. Results: Cisplatin induced electrophysiological threshold shifts, hair cell loss, and reduced synaptophysin immunoreactivity in the synapse area around the IHCs and OHCs. H2 inhalation mitigated all these effects. Cisplatin also reduced the OCT2 intensity in the inner and outer pillar cells and in the stria vascularis as well as the CTR1 intensity in the synapse area around the IHCs, the Deiters' cells, and the stria vascularis. H2 prevented the majority of these effects. Conclusion: H2 inhalation can reduce cisplatin-induced ototoxicity on functional, cellular, and subcellular levels. It is proposed that synaptopathy may serve as a marker for cisplatin ototoxicity. The effect of H2 on the antineoplastic activity of cisplatin needs to be further explored.
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Affiliation(s)
| | - Marta Kisiel
- Department of Surgical Science, Uppsala UniversityUppsala, Sweden
| | - Kristian Pirttilä
- Division of Analytical Pharmaceutical Chemistry, Department of Medical Chemistry, Uppsala UniversityUppsala, Sweden
| | - Curt Pettersson
- Division of Analytical Pharmaceutical Chemistry, Department of Medical Chemistry, Uppsala UniversityUppsala, Sweden
| | - Pernilla Videhult Pierre
- Division of Audiology, Department of Clinical Science, Intervention and Technology, Karolinska InstitutetStockholm, Sweden
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Yang C, Lv J, Lv T, Pan Y, Han Y, Zhao S, Wang J. Metal ion-assisted drug-loading model for novel delivery system of cisplatin solid lipid nanoparticles with improving loading efficiency and sustained release. J Microencapsul 2016; 33:292-8. [PMID: 27113257 DOI: 10.1080/02652048.2016.1176079] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Accepted: 03/31/2016] [Indexed: 10/21/2022]
Abstract
Metal ion-assisted drug loading model, in which metal ion was used to modify the microstructure of lipid layer, has been developed to improve drug loading efficiency of solid lipid nanoparticles (SLNs). The microstructure and properties of metal ion-assisted cisplatin-loading SLNs were investigated by infra-red spectroscopy, fluorescence spectroscopy and zetasizer. The reactions of hydrogenated soybean lecithin with Zn(2+), Cu(2+), Mn(2+ )and Mg(2+ )have been detected; the mechanism for higher drug encapsulation efficiency (EE) has been investigated. In metal ion introduction SLNs, the compact degree of the lipid molecules was increased due to the electrostatic interaction between metal ions and phospholipid acyl and choline polarity groups, which result in increasing of drug EE. Meanwhile, these electrostatic interactions slowed the releasing rate of encapsulated drug. The study of cytotoxic activity in vitro indicated that the cell cytotoxicity of metal ions introduction SLNs depended on both cell uptake of SLNs and drug releasing from SLNs.
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Affiliation(s)
- Caiqin Yang
- a School of Pharmaceutical Sciences , Hebei Medical University , Shijiazhuang , P.R. China
| | - Jie Lv
- a School of Pharmaceutical Sciences , Hebei Medical University , Shijiazhuang , P.R. China
| | - Tao Lv
- a School of Pharmaceutical Sciences , Hebei Medical University , Shijiazhuang , P.R. China
| | - Yahui Pan
- a School of Pharmaceutical Sciences , Hebei Medical University , Shijiazhuang , P.R. China
| | - Yazhu Han
- a School of Pharmaceutical Sciences , Hebei Medical University , Shijiazhuang , P.R. China
| | - Sha Zhao
- a School of Pharmaceutical Sciences , Hebei Medical University , Shijiazhuang , P.R. China
| | - Jing Wang
- a School of Pharmaceutical Sciences , Hebei Medical University , Shijiazhuang , P.R. China
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Anderson A, McConville A, Davis J. Electrochemical bubble rip: A new approach to controlled drug release. Electrochem commun 2015. [DOI: 10.1016/j.elecom.2015.08.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
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12
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Ichihara M, Sobue S, Ito M, Ito M, Hirayama M, Ohno K. Beneficial biological effects and the underlying mechanisms of molecular hydrogen - comprehensive review of 321 original articles. Med Gas Res 2015; 5:12. [PMID: 26483953 PMCID: PMC4610055 DOI: 10.1186/s13618-015-0035-1] [Citation(s) in RCA: 165] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Accepted: 10/09/2015] [Indexed: 02/08/2023] Open
Abstract
Therapeutic effects of molecular hydrogen for a wide range of disease models and human diseases have been investigated since 2007. A total of 321 original articles have been published from 2007 to June 2015. Most studies have been conducted in Japan, China, and the USA. About three-quarters of the articles show the effects in mice and rats. The number of clinical trials is increasing every year. In most diseases, the effect of hydrogen has been reported with hydrogen water or hydrogen gas, which was followed by confirmation of the effect with hydrogen-rich saline. Hydrogen water is mostly given ad libitum. Hydrogen gas of less than 4 % is given by inhalation. The effects have been reported in essentially all organs covering 31 disease categories that can be subdivided into 166 disease models, human diseases, treatment-associated pathologies, and pathophysiological conditions of plants with a predominance of oxidative stress-mediated diseases and inflammatory diseases. Specific extinctions of hydroxyl radical and peroxynitrite were initially presented, but the radical-scavenging effect of hydrogen cannot be held solely accountable for its drastic effects. We and others have shown that the effects can be mediated by modulating activities and expressions of various molecules such as Lyn, ERK, p38, JNK, ASK1, Akt, GTP-Rac1, iNOS, Nox1, NF-κB p65, IκBα, STAT3, NFATc1, c-Fos, and ghrelin. Master regulator(s) that drive these modifications, however, remain to be elucidated and are currently being extensively investigated.
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Affiliation(s)
- Masatoshi Ichihara
- Department of Biomedical Sciences, College of Life and Health Sciences, Chubu University, 1200 Matsumoto-cho, Kasugai, 487-8501 Japan
| | - Sayaka Sobue
- Department of Biomedical Sciences, College of Life and Health Sciences, Chubu University, 1200 Matsumoto-cho, Kasugai, 487-8501 Japan
| | - Mikako Ito
- Division of Neurogenetics, Center for Neurological Diseases and Cancer, Nagoya University Graduate School of Medicine, 65 Tsurumai, Showa-ku Nagoya, 466-8550 Japan
| | - Masafumi Ito
- Research Team for Mechanism of Aging, Tokyo Metropolitan Institute of Gerontology, 35-2 Sakae-cho, Itabashi, Tokyo, 173-0015 Japan
| | - Masaaki Hirayama
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, 1-1-20 Daiko-Minami, Higashi-ku, Nagoya, 461-8673 Japan
| | - Kinji Ohno
- Division of Neurogenetics, Center for Neurological Diseases and Cancer, Nagoya University Graduate School of Medicine, 65 Tsurumai, Showa-ku Nagoya, 466-8550 Japan
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Meng X, Chen H, Wang G, Yu Y, Xie K. Hydrogen-rich saline attenuates chemotherapy-induced ovarian injury via regulation of oxidative stress. Exp Ther Med 2015; 10:2277-2282. [PMID: 26668628 DOI: 10.3892/etm.2015.2787] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2014] [Accepted: 07/31/2015] [Indexed: 01/21/2023] Open
Abstract
Hydrogen has been reported to exert a therapeutic effect in several diseases due to its antioxidative, anti-inflammatory and anti-apoptotic properties. The aim of the present study was to investigate whether hydrogen-rich saline treatment could attenuate ovarian damage induced by cisplatin. A total of 240 adult, virgin, female Sprague Dawley rats, weighing 180-220 g, were randomly divided into four groups (n=60 per group): Control (Con), control + hydrogen-rich saline (Con + H2), cisplatin-induced ovarian injury (OI) and cisplatin-induced ovarian injury + hydrogen-rich saline (OI + H2). Cisplatin was diluted in saline immediately before use. In the OI and OI + H2 groups, the rats were administered a dose of cisplatin on the 1st and 7th days. The rats in the Con + H2 and OI + H2 groups were intraperitoneally injected with hydrogen-rich saline (10ml/kg body weight) once a day over a 2-week period. On the 14th, 28th and 42nd days (T1, T2 and T3) after the cisplatin injection, femoral vein blood was collected. At the end of the experiment, ovarian homogenates were prepared, and the samples were used for estrogen (E2), follicle-stimulating hormone (FSH), superoxide dismutase (SOD), catalase (CAT) and malondialdehyde (MDA) examination. In addition, rats (n=10 per group) were sacrificed for bilateral ovary removal; one was fixed in formalin for follicle-counting analysis, while the other was used for nuclear factor erythroid 2-related factor 2 (Nrf2) detection by western blotting. Hydrogen-rich saline attenuated the FSH release, elevated the level of E2, improved the development of follicles, and reduced the damage to the ovarian cortex at T1, T2 and T3 in the OI + H2 rats. Cisplatin induced oxidative stress by increasing the levels of oxidation products and attenuating the activity of antioxidant enzyme, which could be reversed by hydrogen-rich saline treatment. Furthermore, hydrogen-rich saline regulated the Nrf2 protein expression in rats with ovarian damage. In conclusion, hydrogen-rich saline exerts a protective effect against cisplatin-induced ovarian injury by reducing MDA and increasing SOD and CAT activity. Ovarian injury induced by chemotherapy involves the activation of Nrf2.
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Affiliation(s)
- Xiaoyin Meng
- Department of Gynecology and Obstetrics, Tianjin Hospital, Tianjin 300052, P.R. China
| | - Hongguang Chen
- Department of Anesthesiology, Tianjin Institute of Anesthesiology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China ; Tianjin Institute of Anesthesiology, Tianjin 300052, P.R. China
| | - Guolin Wang
- Department of Anesthesiology, Tianjin Institute of Anesthesiology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China ; Tianjin Institute of Anesthesiology, Tianjin 300052, P.R. China
| | - Yonghao Yu
- Department of Anesthesiology, Tianjin Institute of Anesthesiology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China ; Tianjin Institute of Anesthesiology, Tianjin 300052, P.R. China
| | - Keliang Xie
- Department of Anesthesiology, Tianjin Institute of Anesthesiology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China ; Tianjin Institute of Anesthesiology, Tianjin 300052, P.R. China
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Fetoni AR, Eramo SLM, Paciello F, Rolesi R, Podda MV, Troiani D, Paludetti G. Curcuma longa (curcumin) decreases in vivo cisplatin-induced ototoxicity through heme oxygenase-1 induction. Otol Neurotol 2015; 35:e169-77. [PMID: 24608370 DOI: 10.1097/mao.0000000000000302] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
HYPOTHESIS To investigate whether curcumin may have in vivo protective effects against cisplatin ototoxicity by its direct scavenger activity and/or by curcumin-mediated upregulation of HO-1. BACKGROUND Cisplatin-induced ototoxicity is a major dose-limiting side effect in anticancer chemotherapy. A protective approach to decrease cisplatin ototoxicity without compromising its therapeutic efficacy remains a critical goal for anticancer therapy. Recent evidences indicate that curcumin exhibits antioxidant, anti-inflammatory, and chemosensitizer activities. METHODS In male adult Wistar rats, a curcumin dose of 200 mg/kg, selected from a dose-response curve, was injected 1 hour before cisplatin administration and once daily for the following 3 days. A single dose of cisplatin (16 mg/kg) was administered intraperitoneally. Rats were divided as follows: 1) control, 2) curcumin control, 3) vehicle control, 4) cisplatin, 5) cisplatin+ vehicle, and 6) curcumin+cisplatin. ABRs were measured before and at Days 3 and 5 after cisplatin administration. Rhodamine-phalloidin staining, 4-hydroxy-2-nonenal and heme-oxigenase-1 immunostainings, and Western blot analyses were performed to assess and quantify OHC loss, lipid peroxidation, and the endogenous response to cisplatin-induced damage and to curcumin protection. RESULTS Curcumin treatment attenuated hearing loss induced by cisplatin, increased OHC survival, decreased 4-HNE expression, and increased HO-1 expression. CONCLUSION This preclinical study demonstrates that systemic curcumin attenuates ototoxicity and provides molecular evidence for a role of HO-1 as an additional mediator in attenuating cisplatin-induced damage.
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Affiliation(s)
- Anna R Fetoni
- Department of Otolaryngology, Head and Neck Surgery; Institute of Human Physiology, Catholic University of Rome, Rome, Italy
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Hearing Loss After Cisplatin: Oxidative Stress Pathways and Potential for Protection. FREE RADICALS IN ENT PATHOLOGY 2015. [DOI: 10.1007/978-3-319-13473-4_11] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Abstract
Safety pharmacology satisfies a key requirement in the process of drug development. Safety pharmacology studies are required to assess the impact of a new chemical entity (NCE) or biotechnology-derived product for human use on vital systems, such as those subserving auditory function. Safety pharmacology studies accordingly are defined as those studies that investigate the potential undesirable effects of a substance on auditory functions in relation to exposure in and above the therapeutic range. Auditory safety studies should be designed with the primary objective of determining how administration of a compound influences normal hearing. If an effect on hearing is identified, then it is necessary to determine through histopathology the underlying mechanism for the observed hearing loss. Since the auditory system contains a heterogeneous mixture of structural and cellular components that are organized in a very complex and integrated manner, it is necessary to clearly identify the underlying primary mechanism or target of the new chemical entity that produced the hearing loss. This chapter will highlight major components of auditory function with regard to potential opportunities for drug interaction. Aspects of designing ototoxicity studies will be discussed with an emphasis on standards deemed necessary by the US Food and Drug Administration. Additionally, classes of ototoxic compounds and their proposed mechanisms of action are described in depth.
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Preparation and characterization of cisplatin magnetic solid lipid nanoparticles (MSLNs): effects of loading procedures of Fe3O4 nanoparticles. Pharm Res 2014; 32:482-91. [PMID: 25171973 DOI: 10.1007/s11095-014-1476-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Accepted: 07/25/2014] [Indexed: 02/07/2023]
Abstract
PURPOSE In order to improve formulation of targeting chemotherapy, cisplatin-loaded magnetic solid lipid nanoparticles (MSLNs) were prepared. In present study, the deliberate loading of Fe3O4 magnetic nanoparticles (MNs) into cisplatin SLNs was developed. METHODS SLNs were produced by film scattering ultrasonic technique. The effects of two different loading procedures of MNs on the microstructure and physicochemical properties of MSLNs were investigated by transmission electron microscopy (TEM), zetasizer, infrared spectroscopy (IR), and fluorescence spectroscopy. In vitro drug release and cytotoxicity against human cervical carcinoma SiHa cells, in vivo tumor cell uptake and target tissue distribution of MSLNs under external magnetic field were investigated. RESULTS The encapsulation efficiency of cisplatin and the content of MNs in procedure I SLNs were 69.20 ± 4.5% and 2.16 ± 0.53 mg/mL, respectively, which were higher than those of procedure II MSLNs. In procedure I, the MNs, which were combined with lipids during film formation, distributed in the middle of the lipid layer in SLNs. Differently, in procedure II, the MNs and cisplatin were contained in an interior compartment in SLNs, resulting from mixing with drugs during hydration of lipid film. The procedure I MSLNs had higher cytotoxicity than procedure II MSLNs or free cisplatin. With in vivo intratumoral administration, cisplatin concentration in the tumor tissue was maintained at higher level for MSLNs than that for free cisplatin, especially under external magnetic field. CONCLUSIONS Procedure I, the developed deliberate MNs loading method, was superior over procedure II in cisplatin encapsulation efficiency, MNs content and cell cytotoxicity.
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Fang B, Xiao H. Rapamycin alleviates cisplatin-induced ototoxicity in vivo. Biochem Biophys Res Commun 2014; 448:443-7. [PMID: 24796670 DOI: 10.1016/j.bbrc.2014.04.123] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Accepted: 04/24/2014] [Indexed: 10/25/2022]
Abstract
BACKGROUND Cisplatin-induced ototoxicity affects a high percentage of new cancer patients worldwide. The detailed mechanism of cisplatin-induced ototoxicity is not completely understood. We investigated whether rapamycin could protect rats from cisplatin-induced ototoxicity. METHODS Forty-eight male Wistar rats were randomly divided into six groups. Three groups were intraperitoneally (IP) infused with cisplatin at a dose of 16 mg/kg and immediately injected with either dimethylsulfoxide (DMSO), rapamycin, or chloroquine (CQ). The remaining three groups were treated with rapamycin, CQ, or saline alone. The auditory brainstem response (ABR) test was performed to detect the rats' hearing status. Serum was isolated to measure the level of the oxidative marker malondialdehyde (MDA), the basilar membrane was prepared to count the outer hair cell loss, and soft tissue samples extracted from the cochleae were lysed to analyze the microtubule-associated protein light chain 3 (LC3) and Beclin-1. RESULTS The rapamycin treatment significantly attenuated cisplatin-induced hearing loss, decreased oxidative stress, and alleviated the hair cell damage that was associated with the upregulation of the LC3-II/GAPDH ratio and increased Beclin-1 expression. CONCLUSION Our results demonstrated that rapamycin has an otoprotective effect; it attenuates cisplatin-induced ototoxicity, probably by attenuating oxidative damage and inducing autophagy.
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Affiliation(s)
- Bin Fang
- Department of Otorhinolaryngology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hongjun Xiao
- Department of Otorhinolaryngology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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Chen HG, Xie KL, Han HZ, Wang WN, Liu DQ, Wang GL, Yu YH. Heme oxygenase-1 mediates the anti-inflammatory effect of molecular hydrogen in LPS-stimulated RAW 264.7 macrophages. Int J Surg 2013; 11:1060-6. [DOI: 10.1016/j.ijsu.2013.10.007] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Revised: 09/17/2013] [Accepted: 10/12/2013] [Indexed: 10/26/2022]
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Kamisli S, Ciftci O, Cetin A, Kaya K, Kamisli O, Celik H. Fish oil protects the peripheral and central nervous systems against cisplatin-induced neurotoxicity. Nutr Neurosci 2013; 17:116-26. [DOI: 10.1179/1476830513y.0000000074] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Kou ZZ, Qu J, Zhang DL, Li H, Li YQ. Noise-induced hearing loss is correlated with alterations in the expression of GABAB receptors and PKC gamma in the murine cochlear nucleus complex. Front Neuroanat 2013; 7:25. [PMID: 23908607 PMCID: PMC3726868 DOI: 10.3389/fnana.2013.00025] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2013] [Accepted: 07/11/2013] [Indexed: 01/08/2023] Open
Abstract
Noise overexposure may induce permanent noise-induced hearing loss (NIHL). The cochlear nucleus complex (CNC) is the entry point for sensory information in the central auditory system. Impairments in gamma-aminobutyric acid (GABA)—mediated synaptic transmission in the CNC have been implicated in the pathogenesis of auditory disorders. However, the role of protein kinase C (PKC) signaling pathway in GABAergic inhibition in the CNC in NIHL remains elusive. Thus, we investigated the alterations of glutamic acid decarboxylase 67 (GAD67, the chemical marker for GABA-containing neurons), PKC γ subunit (PKCγ) and GABAB receptor (GABABR) expression in the CNC using transgenic GAD67-green fluorescent protein (GFP) knock-in mice, BALB/c mice and C57 mice. Immunohistochemical results indicate that the GFP-labeled GABAergic neurons were distributed in the molecular layer (ML) and fusiform cell layer (FCL) of the dorsal cochlear nucleus (DCN). We found that 69.91% of the GFP-positive neurons in the DCN were immunopositive for both PKCγ and GABABR1. The GAD67-positive terminals made contacts with PKCγ/GABABR1 colocalized neurons. Then we measured the changes of auditory thresholds in mice after noise exposure for 2 weeks, and detected the GAD67, PKCγ, and GABABR expression at mRNA and protein levels in the CNC. With noise over-exposure, there was a reduction in GABABR accompanied by an increase in PKCγ expression, but no significant change in GAD67 expression. In summary, our results demonstrate that alterations in the expression of PKCγ and GABABRs may be involved in impairments in GABAergic inhibition within the CNC and the development of NIHL.
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Affiliation(s)
- Zhen-Zhen Kou
- Department of Anatomy, Histology and Embryology, K. K. Leung Brain Research Centre, The Fourth Military Medical University Xi'an, China
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Ghanizadeh A. Physical exercise and intermittent administration of lactulose may improve autism symptoms through hydrogen production. Med Gas Res 2012; 2:19. [PMID: 22846252 PMCID: PMC3464164 DOI: 10.1186/2045-9912-2-19] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2012] [Accepted: 07/26/2012] [Indexed: 11/15/2022] Open
Abstract
Autism is neuro-developmental disorder. Oxidative stress is enhanced in some children with autism. Hydrogen is a gas with anti-oxidative effects suggested for treating or prevention of some medical problems. It is hypothesized that lactulose or hydrogen water may provide hydrogen to reduce oxidative stress in autism.
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Affiliation(s)
- Ahmad Ghanizadeh
- Research Center for Psychiatry and Behavioral Sciences, Department of Psychiatry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.
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