1
|
de Deus JL, Amorim MR, da Silva Junior RMP, Jesus AA, de Barcellos Filho PCG, Cárnio EC, Cunha AOS, Leão RM, Branco LG. Inhaled molecular hydrogen reduces hippocampal neuroinflammation, glial reactivity and ameliorates memory impairment during systemic inflammation. Brain Behav Immun Health 2023; 31:100654. [PMID: 37449286 PMCID: PMC10336161 DOI: 10.1016/j.bbih.2023.100654] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 05/30/2023] [Accepted: 06/12/2023] [Indexed: 07/18/2023] Open
Abstract
Sepsis is associated with numerous physiological and biochemical abnormalities that result in a life-threatening condition. The involvement of the Central Nervous System (CNS) during sepsis has received considerable attention, especially the hippocampus which plays a key role in the learning and memory processes. The increased interest in this limbic region during systemic inflammation (SI) is related to the number of sepsis survivor patients who have cognitive impairments. A single injection of lipopolysaccharide (LPS)-induced systemic inflammation is the most commonly used murine endotoxemia model because it replicates several pathophysiological changes observed in severe sepsis. Molecular hydrogen (H2) has been used as an anti-inflammatory therapeutic strategy to prevent neuroinflammation. However, the mechanisms by which inhaled H2 mitigate memory loss during SI remains unknown. To understand how H2 acts in the hippocampus, the current study focused on specific mechanisms that may be involved in reducing neuroinflammation in rats during SI. We hypothesized that inhaled H2 decreases LPS-induced hippocampal pro-inflammatory cytokines surges and this effect is associated with reduced memory loss. Using different and integrative approaches, i.e., from hippocampal cells electrophysiology to animal behavior, we report that inhaled H2 decreased LPS-induced peripheral and hippocampal inflammation, decreased microglial and astrocytic activation, lessen memory loss without affecting long-term potentiation (LTP). To our knowledge, this is the first evidence showing that inhaled H2 reduces hippocampal microglial and glial cells inflammation, which may be associated with a reduced memory impairment induced by SI.
Collapse
Affiliation(s)
- Júnia Lara de Deus
- Department of Basic and Oral Biology, Dental School of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - Mateus Ramos Amorim
- Department of Basic and Oral Biology, Dental School of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP, Brazil
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | | | - Aline Alves Jesus
- Department of Physiology, School of Medicine of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP, 14049-900, Brazil
| | | | - Evelin Capellari Cárnio
- Department of General and Specialized Nursing, School of Nursing of Ribeirão Preto, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | | | - Ricardo Maurício Leão
- Department of Physiology, School of Medicine of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP, 14049-900, Brazil
| | - Luiz G.S. Branco
- Department of Basic and Oral Biology, Dental School of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| |
Collapse
|
2
|
Miura M, Imai K, Tsuda H, Miki R, Tano S, Ito Y, Hirako-Takamura S, Moriyama Y, Ushida T, Iitani Y, Nakano-Kobayashi T, Toyokuni S, Kajiyama H, Kotani T. Prenatal Molecular Hydrogen Administration Ameliorates Several Findings in Nitrofen-Induced Congenital Diaphragmatic Hernia. Int J Mol Sci 2021; 22:ijms22179500. [PMID: 34502408 PMCID: PMC8431162 DOI: 10.3390/ijms22179500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 08/27/2021] [Accepted: 08/27/2021] [Indexed: 11/22/2022] Open
Abstract
Oxidative stress plays a pathological role in pulmonary hypoplasia and pulmonary hypertension in congenital diaphragmatic hernia (CDH). This study investigated the effect of molecular hydrogen (H2), an antioxidant, on CDH pathology induced by nitrofen. Sprague-Dawley rats were divided into three groups: control, CDH, and CDH + hydrogen-rich water (HW). Pregnant dams of CDH + HW pups were orally administered HW from embryonic day 10 until parturition. Gasometric evaluation and histological, immunohistochemical, and real-time polymerase chain reaction analyses were performed. Gasometric results (pH, pO2, and pCO2 levels) were better in the CDH + HW group than in the CDH group. The CDH + HW group showed amelioration of alveolarization and pulmonary artery remodeling compared with the CDH group. Oxidative stress (8-hydroxy-2′-deoxyguanosine-positive-cell score) in the pulmonary arteries and mRNA levels of protein-containing pulmonary surfactant that protects against pulmonary collapse (surfactant protein A) were significantly attenuated in the CDH + HW group compared with the CDH group. Overall, prenatal H2 administration improved respiratory function by attenuating lung morphology and pulmonary artery thickening in CDH rat models. Thus, H2 administration in pregnant women with diagnosed fetal CDH might be a novel antenatal intervention strategy to reduce newborn mortality due to CDH.
Collapse
MESH Headings
- Animals
- Animals, Newborn
- Antioxidants/pharmacology
- Deuterium Oxide/pharmacology
- Disease Models, Animal
- Female
- Hernias, Diaphragmatic, Congenital/drug therapy
- Hernias, Diaphragmatic, Congenital/metabolism
- Hernias, Diaphragmatic, Congenital/pathology
- Hydrogen/metabolism
- Hydrogen/pharmacology
- Hypertension, Pulmonary/metabolism
- Lung/pathology
- Male
- Organogenesis/drug effects
- Phenyl Ethers/adverse effects
- Phenyl Ethers/pharmacology
- Pregnancy
- Pulmonary Artery
- Pulmonary Surfactants/metabolism
- Rats
- Rats, Sprague-Dawley
- Vascular Remodeling/drug effects
Collapse
Affiliation(s)
- Mayo Miura
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya 466-8550, Japan; (M.M.); (K.I.); (S.T.); (T.U.); (Y.I.); (T.N.-K.); (H.K.)
| | - Kenji Imai
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya 466-8550, Japan; (M.M.); (K.I.); (S.T.); (T.U.); (Y.I.); (T.N.-K.); (H.K.)
| | - Hiroyuki Tsuda
- Department of Obstetrics and Gynecology, Japanese Red Cross Nagoya First Hospital, 3-35 Michisita-Cho, Nakamura-Ku, Nagoya 453-8511, Japan; (H.T.); (Y.I.)
| | - Rika Miki
- Laboratory of Bell Research Center, Department of Obstetrics and Gynecology Collaborative Research, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya 466-8550, Japan;
| | - Sho Tano
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya 466-8550, Japan; (M.M.); (K.I.); (S.T.); (T.U.); (Y.I.); (T.N.-K.); (H.K.)
| | - Yumiko Ito
- Department of Obstetrics and Gynecology, Japanese Red Cross Nagoya First Hospital, 3-35 Michisita-Cho, Nakamura-Ku, Nagoya 453-8511, Japan; (H.T.); (Y.I.)
| | - Shima Hirako-Takamura
- Department of Obstetrics and Gynecology, Kasugai Municipal Hospital, Kasugai 486-8510, Japan;
| | - Yoshinori Moriyama
- Department of Obstetrics and Gynecology, Fujita Health University Graduate School of Medicine, Toyoake 470-1192, Japan;
| | - Takafumi Ushida
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya 466-8550, Japan; (M.M.); (K.I.); (S.T.); (T.U.); (Y.I.); (T.N.-K.); (H.K.)
| | - Yukako Iitani
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya 466-8550, Japan; (M.M.); (K.I.); (S.T.); (T.U.); (Y.I.); (T.N.-K.); (H.K.)
| | - Tomoko Nakano-Kobayashi
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya 466-8550, Japan; (M.M.); (K.I.); (S.T.); (T.U.); (Y.I.); (T.N.-K.); (H.K.)
| | - Shinya Toyokuni
- Department of Pathology and Biological Responses, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya 466-8550, Japan;
| | - Hiroaki Kajiyama
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya 466-8550, Japan; (M.M.); (K.I.); (S.T.); (T.U.); (Y.I.); (T.N.-K.); (H.K.)
| | - Tomomi Kotani
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya 466-8550, Japan; (M.M.); (K.I.); (S.T.); (T.U.); (Y.I.); (T.N.-K.); (H.K.)
- Center for Maternal-Neonatal Care, Division of Perinatology, Nagoya University Hospital, 65 Tsurumai-Cho, Showa-Ku, Nagoya 466-8560, Japan
- Correspondence: ; Tel.: +81-52-744-2261; Fax: +81-52-744-2268
| |
Collapse
|
3
|
Woods RM, Lorusso JM, Potter HG, Neill JC, Glazier JD, Hager R. Maternal immune activation in rodent models: A systematic review of neurodevelopmental changes in gene expression and epigenetic modulation in the offspring brain. Neurosci Biobehav Rev 2021; 129:389-421. [PMID: 34280428 DOI: 10.1016/j.neubiorev.2021.07.015] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 05/11/2021] [Accepted: 07/11/2021] [Indexed: 01/06/2023]
Abstract
Maternal immune activation (mIA) during pregnancy is hypothesised to disrupt offspring neurodevelopment and predispose offspring to neurodevelopmental disorders such as schizophrenia. Rodent models of mIA have explored possible mechanisms underlying this paradigm and provide a vital tool for preclinical research. However, a comprehensive analysis of the molecular changes that occur in mIA-models is lacking, hindering identification of robust clinical targets. This systematic review assesses mIA-driven transcriptomic and epigenomic alterations in specific offspring brain regions. Across 118 studies, we focus on 88 candidate genes and show replicated changes in expression in critical functional areas, including elevated inflammatory markers, and reduced myelin and GABAergic signalling proteins. Further, disturbed epigenetic markers at nine of these genes support mIA-driven epigenetic modulation of transcription. Overall, our results demonstrate that current outcome measures have direct relevance for the hypothesised pathology of schizophrenia and emphasise the importance of mIA-models in contributing to the understanding of biological pathways impacted by mIA and the discovery of new drug targets.
Collapse
Affiliation(s)
- Rebecca M Woods
- Division of Evolution & Genomic Sciences, School of Biological Sciences, Manchester Academic Health Science Center, Faculty of Biology, Medicine & Health, University of Manchester, Manchester, M13 9PT, United Kingdom.
| | - Jarred M Lorusso
- Division of Evolution & Genomic Sciences, School of Biological Sciences, Manchester Academic Health Science Center, Faculty of Biology, Medicine & Health, University of Manchester, Manchester, M13 9PT, United Kingdom
| | - Harry G Potter
- Division of Evolution & Genomic Sciences, School of Biological Sciences, Manchester Academic Health Science Center, Faculty of Biology, Medicine & Health, University of Manchester, Manchester, M13 9PT, United Kingdom
| | - Joanna C Neill
- Division of Pharmacy & Optometry, School of Health Sciences, Manchester Academic Health Science Center, Faculty of Biology, Medicine & Health, University of Manchester, Manchester, M13 9PL, United Kingdom
| | - Jocelyn D Glazier
- Division of Evolution & Genomic Sciences, School of Biological Sciences, Manchester Academic Health Science Center, Faculty of Biology, Medicine & Health, University of Manchester, Manchester, M13 9PT, United Kingdom
| | - Reinmar Hager
- Division of Evolution & Genomic Sciences, School of Biological Sciences, Manchester Academic Health Science Center, Faculty of Biology, Medicine & Health, University of Manchester, Manchester, M13 9PT, United Kingdom
| |
Collapse
|
4
|
Ohsawa I. Biological Responses to Hydrogen Molecule and its Preventive Effects on Inflammatory Diseases. Curr Pharm Des 2021; 27:659-666. [PMID: 32981496 DOI: 10.2174/1381612826666200925123510] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 08/09/2020] [Indexed: 11/22/2022]
Abstract
Because multicellular organisms do not have hydrogenase, H2 has been considered to be biologically inactive in these species, and enterobacteria to be largely responsible for the oxidation of H2 taken into the body. However, we showed previously that inhalation of H2 markedly suppresses brain injury induced by focal ischemia-reperfusion by buffering oxidative stress. Although the reaction constant of H2 with hydroxyl radical in aqueous solution is two to three orders of magnitude lower than that of conventional antioxidants, we showed that hydroxyl radical generated by the Fenton reaction reacts with H2 at room temperature without a catalyst. Suppression of hydroxyl radical by H2 has been applied in ophthalmic surgery. However, many of the anti- inflammatory and other therapeutic effects of H2 cannot be completely explained by its ability to scavenge reactive oxygen species. H2 administration is protective in several disease models, and preculture in the presence of H2 suppresses oxidative stress-induced cell death. Specifically, H2 administration induces mitochondrial oxidative stress and activates Nrf2; this phenomenon, in which mild mitochondrial stress leaves the cell less susceptible to subsequent perturbations, is called mitohormesis. Based on these findings, we conclude that crosstalk between antioxidative stress pathways and the anti-inflammatory response is the most important molecular mechanism involved in the protective function of H2, and that regulation of the immune system underlies H2 efficacy. For further medical applications of H2, it will be necessary to identify the biomolecule on which H2 first acts.
Collapse
Affiliation(s)
- Ikuroh Ohsawa
- Biological Process of Aging, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan
| |
Collapse
|
5
|
Qi B, Yu Y, Wang Y, Wang Y, Yu Y, Xie K. Perspective of Molecular Hydrogen in the Treatment of Sepsis. Curr Pharm Des 2021; 27:667-678. [PMID: 32912119 DOI: 10.2174/1381612826666200909124936] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 08/09/2020] [Indexed: 11/22/2022]
Abstract
Sepsis is the main cause of death in critically ill patients with no effective treatment. Sepsis is lifethreatening organ dysfunction due to a dysregulated host response to infection. As a novel medical gas, molecular hydrogen (H2) has a therapeutic effect on many diseases, such as sepsis. H2 treatment exerts multiple biological effects, which can effectively improve multiple organ injuries caused by sepsis. However, the underlying molecular mechanisms of hydrogen involved in the treatment of sepsis remain elusive, which are likely related to anti-inflammation, anti-oxidation, anti-apoptosis, regulation of autophagy and multiple signaling pathways. This review can help better understand the progress of hydrogen in the treatment of sepsis, and provide a theoretical basis for the clinical application of hydrogen therapy in sepsis in the future.
Collapse
Affiliation(s)
- Bo Qi
- Department of Anesthesiology, Tianjin Institute of Anesthesiology, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Yang Yu
- Department of Anesthesiology, Tianjin Institute of Anesthesiology, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Yaoqi Wang
- Department of Anesthesiology, Tianjin Institute of Anesthesiology, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Yuzun Wang
- Department of Anesthesiology, Tianjin Institute of Anesthesiology, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Yonghao Yu
- Department of Anesthesiology, Tianjin Institute of Anesthesiology, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Keliang Xie
- Department of Anesthesiology, Tianjin Institute of Anesthesiology, Tianjin Medical University General Hospital, Tianjin 300052, China
| |
Collapse
|
6
|
Hu Q, Zhou Y, Wu S, Wu W, Deng Y, Shao A. Molecular hydrogen: A potential radioprotective agent. Biomed Pharmacother 2020; 130:110589. [PMID: 32763820 DOI: 10.1016/j.biopha.2020.110589] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 07/25/2020] [Accepted: 07/28/2020] [Indexed: 02/07/2023] Open
Abstract
In recent years, many studies have shown that hydrogen has therapeutic and preventive effects on various diseases. Its selective antioxidant properties were well noticed. Most of the ionizing radiation-induced damage is caused by hydroxyl radicals (OH) from radiolysis of H2O. Since hydrogen can mitigate such damage through multiple mechanisms, it presents noteworthy potential as a novel radio-protective agent. This review analyses possible mechanisms for hydrogen's radioprotective properties and effective delivery methods. We also look into details of vitro and vivo studies for hydrogen's radioprotective effects, and clinical practices. We conclude that hydrogen has good potential in radio-protection, with evidence that warrants greater research efforts in this field.
Collapse
Affiliation(s)
- Qiongge Hu
- Department of Radiation Oncology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yunxiang Zhou
- Department of Surgical Oncology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Shijie Wu
- Cancer Institute (Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education), The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Wei Wu
- Department of Medical Oncology, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Yongchuan Deng
- Department of Surgical Oncology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Anwen Shao
- Department of Neurosurgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.
| |
Collapse
|
7
|
Tao G, Song G, Qin S. Molecular hydrogen: current knowledge on mechanism in alleviating free radical damage and diseases. Acta Biochim Biophys Sin (Shanghai) 2019; 51:1189-1197. [PMID: 31738389 DOI: 10.1093/abbs/gmz121] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 09/20/2019] [Accepted: 08/30/2019] [Indexed: 12/11/2022] Open
Abstract
Ever since molecular hydrogen was first reported as a hydroxyl radical scavenger in 2007, the beneficial effect of hydrogen was documented in more than 170 disease models and human diseases including ischemia/reperfusion injury, metabolic syndrome, inflammation, and cancer. All these pathological damages are concomitant with overproduction of reactive oxygen species (ROS) where molecular hydrogen has been widely demonstrated as a selective antioxidant. Although it is difficult to construe the molecular mechanism of hydrogen's biomedical effect, an increasing number of studies have been helping us draw the picture clearer with days passing by. In this review, we summarized the current knowledge on systemic and cellular modulation by hydrogen treatment. We discussed the antioxidative, anti-inflammatory, and anti-apoptosis effects of hydrogen, as well as its protection on mitochondria and the endoplasmic reticulum, regulation of intracellular signaling pathways, and balancing of the immune cell subtypes. We hope that this review will provide organized information that prompts further investigation for in-depth studies of hydrogen effect.
Collapse
Affiliation(s)
- Geru Tao
- Key Laboratory of Atherosclerosis in University of Shandong, Institute of Atherosclerosis, Shandong First Medical University & Shandong Academy of Medical Sciences, Tai’an 271000, China
| | - Guohua Song
- Key Laboratory of Atherosclerosis in University of Shandong, Institute of Atherosclerosis, Shandong First Medical University & Shandong Academy of Medical Sciences, Tai’an 271000, China
| | - Shucun Qin
- Key Laboratory of Atherosclerosis in University of Shandong, Institute of Atherosclerosis, Shandong First Medical University & Shandong Academy of Medical Sciences, Tai’an 271000, China
| |
Collapse
|
8
|
Bergdolt L, Dunaevsky A. Brain changes in a maternal immune activation model of neurodevelopmental brain disorders. Prog Neurobiol 2018; 175:1-19. [PMID: 30590095 DOI: 10.1016/j.pneurobio.2018.12.002] [Citation(s) in RCA: 144] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Revised: 12/13/2018] [Accepted: 12/20/2018] [Indexed: 12/11/2022]
Abstract
The developing brain is sensitive to a variety of insults. Epidemiological studies have identified prenatal exposure to infection as a risk factor for a range of neurological disorders, including autism spectrum disorder and schizophrenia. Animal models corroborate this association and have been used to probe the contribution of gene-environment interactions to the etiology of neurodevelopmental disorders. Here we review the behavior and brain phenotypes that have been characterized in MIA offspring, including the studies that have looked at the interaction between maternal immune activation and genetic risk factors for autism spectrum disorder or schizophrenia. These phenotypes include behaviors relevant to autism, schizophrenia, and other neurological disorders, alterations in brain anatomy, and structural and functional neuronal impairments. The link between maternal infection and these phenotypic changes is not fully understood, but there is increasing evidence that maternal immune activation induces prolonged immune alterations in the offspring's brain which could underlie epigenetic alterations which in turn may mediate the behavior and brain changes. These concepts will be discussed followed by a summary of the pharmacological interventions that have been tested in the maternal immune activation model.
Collapse
Affiliation(s)
- Lara Bergdolt
- University of Nebraska Medical Center, Neurological Sciences, 985960 Nebraska Medical Center, 68105, Omaha, NE, United States
| | - Anna Dunaevsky
- University of Nebraska Medical Center, Neurological Sciences, 985960 Nebraska Medical Center, 68105, Omaha, NE, United States.
| |
Collapse
|
9
|
Imai K, Kotani T, Tsuda H, Nakano T, Ushida T, Iwase A, Nagai T, Toyokuni S, Suzumura A, Kikkawa F. Administration of molecular hydrogen during pregnancy improves behavioral abnormalities of offspring in a maternal immune activation model. Sci Rep 2018; 8:9221. [PMID: 29907804 PMCID: PMC6003913 DOI: 10.1038/s41598-018-27626-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Accepted: 06/06/2018] [Indexed: 12/27/2022] Open
Abstract
The aim of the present study was to investigate long-term outcomes of the offspring in a lipopolysaccharide (LPS)-induced maternal immune activation (MIA) model and the effect of maternal molecular hydrogen (H2) administration. We have previously demonstrated in the MIA mouse model that maternal administration of H2 attenuates oxidative damage and neuroinflammation, including induced pro-inflammatory cytokines and microglial activation, in the fetal brain. Short-term memory, sociability and social novelty, and sensorimotor gating were evaluated using the Y-maze, three-chamber, and prepulse inhibition (PPI) tests, respectively, at postnatal 3 or 4 weeks. The number of neurons and oligodendrocytes was also analyzed at postnatal 5 weeks by immunohistochemical analysis. Offspring of the LPS-exposed dams showed deficits in short-term memory and social interaction, following neuronal and oligodendrocytic loss in the amygdala and cortex. Maternal H2 administration markedly attenuated these LPS-induced abnormalities. Moreover, we evaluated the effect of H2 on LPS-induced astrocytic activation, both in vivo and in vitro. The number of activated astrocytes with hypertrophic morphology was increased in LPS-exposed offspring, but decreased in the offspring of H2-administered dams. In primary cultured astrocytes, LPS-induced pro-inflammatory cytokines were attenuated by H2 administration. Overall, these findings indicate that maternal H2 administration exerts neuroprotective effects and ameliorates MIA-induced neurodevelopmental deficits of offspring later in life.
Collapse
Affiliation(s)
- Kenji Imai
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan
| | - Tomomi Kotani
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan.
| | - Hiroyuki Tsuda
- Department of Obstetrics and Gynecology, Japanese Red Cross Nagoya Daiichi Hospital, 3-35, Michishita-Cho, Nakamura-Ku, Nagoya, 453-8511, Japan
| | - Tomoko Nakano
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan
| | - Takafumi Ushida
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan
| | - Akira Iwase
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan
| | - Taku Nagai
- Department of Neuropsychopharmacology and Hospital Pharmacy, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan
| | - Shinya Toyokuni
- Department of Pathology and Biological Responses, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan
| | - Akio Suzumura
- Department of Neuroimmunology, Research Institute of Environmental Medicine, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8601, Japan
| | - Fumitaka Kikkawa
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan
| |
Collapse
|
10
|
Nakano T, Kotani T, Imai K, Iitani Y, Ushida T, Tsuda H, Li H, Iwase A, Toyokuni S, Kikkawa F. Effect of molecular hydrogen on uterine inflammation during preterm labour. Biomed Rep 2018; 8:454-460. [PMID: 29732148 DOI: 10.3892/br.2018.1082] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Accepted: 02/14/2018] [Indexed: 12/18/2022] Open
Abstract
Intrauterine inflammation causes preterm birth and is associated with complications in preterm neonates. Thus, strategies aimed at suppressing inflammation are expected to be effective for reducing the risk of preterm birth and associated complications. Our previous studies demonstrated that molecular hydrogen (H2), an anti-inflammatory agent, prevented inflammation-induced impairment in foetal brain and lung tissues in lipopolysaccharide (LPS)-induced rodent models. However, it remains unclear whether H2 is capable of inhibiting preterm labour. The aim of the current study was therefore to investigate the effect of H2 on inflammation-induced preterm labour. Pregnant ICR (CD-1) mice were divided into three groups: Control, LPS and H2 water (HW) + LPS. In the control and LPS groups, vehicle and LPS, respectively, were intraperitoneally injected on embryonic day 15.5. In the HW + LPS group, HW was administered 24 h prior to LPS injection. The time from LPS administration to parturition was compared between the LPS and HW + LPS groups. Maternal uterus was collected 6 h after LPS injection and the transcript levels of pro-inflammatory cytokines, contractile-associated proteins (CAPs), matrix metalloproteinase-3 (Mmp3) and endothelin-1 (Et1) were assessed by reverse transcription-quantitative polymerase chain reaction. The protein levels of cyclooxygenase-2 (Cox2) were also evaluated by immunohistochemistry. The time from LPS administration to parturition in the HW + LPS group was significantly increased compared with that in the LPS group (33.5±3.4 vs. 18.3±8.8 h, respectively, P=0.020). H2 administration also resulted in significantly higher progesterone levels compared with LPS treatment alone (P=0.002). The transcript levels of pro-inflammatory cytokines, CAPs, Mmp3 and Et1 in the uteri of the LPS group were significantly higher than those in the control group (all P<0.05). In turn, all these levels with the exception of interleukin-8 and Mmp3 were significantly lower in the HW + LPS group compared with those in the LPS group (all P<0.05). The protein levels of Cox2 in the LPS group were also significantly increased compared with those in the control (P<0.001) and HW + LPS (P=0.003) groups. These results suggest that inflammation-induced changes in the uterus may be ameliorated through maternal H2 administration. Preventive H2 administration may therefore represent an effective strategy for the suppression of inflammation during preterm labour.
Collapse
Affiliation(s)
- Tomoko Nakano
- Department of Obstetrics and Gynaecology, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550, Japan
| | - Tomomi Kotani
- Department of Obstetrics and Gynaecology, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550, Japan
| | - Kenji Imai
- Department of Obstetrics and Gynaecology, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550, Japan
| | - Yukako Iitani
- Department of Obstetrics and Gynaecology, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550, Japan
| | - Takafumi Ushida
- Department of Obstetrics and Gynaecology, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550, Japan
| | - Hiroyuki Tsuda
- Department of Obstetrics and Gynaecology, Japanese Red Cross Nagoya Daiichi Hospital, Nagoya, Aichi 453-8511, Japan
| | - Hua Li
- Department of Neurology, Yanbian University Hospital, Yanji, Jilin 133000, P.R. China
| | - Akira Iwase
- Department of Obstetrics and Gynaecology, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550, Japan
| | - Shinya Toyokuni
- Department of Pathology and Biological Responses, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550, Japan
| | - Fumitaka Kikkawa
- Department of Obstetrics and Gynaecology, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550, Japan
| |
Collapse
|
11
|
Hydrogen gas attenuates sevoflurane neurotoxicity through inhibiting nuclear factor κ-light-chain-enhancer of activated B cells signaling and proinflammatory cytokine release in neonatal rats. Neuroreport 2017; 28:1170-1175. [DOI: 10.1097/wnr.0000000000000899] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
|
12
|
Dohi K, Satoh K, Miyamoto K, Momma S, Fukuda K, Higuchi R, Ohtaki H, Banks WA. Molecular hydrogen in the treatment of acute and chronic neurological conditions: mechanisms of protection and routes of administration. J Clin Biochem Nutr 2017; 61:1-5. [PMID: 28751802 PMCID: PMC5525017 DOI: 10.3164/jcbn.16-87] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2016] [Accepted: 01/25/2017] [Indexed: 12/22/2022] Open
Abstract
Oxidative stress caused by reactive oxygen species is considered a major mediator of tissue and cell injuries in various neuronal conditions, including neurological emergencies and neurodegenerative diseases. Molecular hydrogen is well characterized as a scavenger of hydroxyl radicals and peroxynitrite. Recently, the neuroprotective effects of treatment with molecular hydrogen have been reported in both basic and clinical settings. Here, we review the effects of hydrogen therapy in acute neuronal conditions and neurodegenerative diseases. Hydrogen therapy administered in drinking water may be useful for the prevention of neurodegenerative diseases and for reducing the symptoms of acute neuronal conditions.
Collapse
Affiliation(s)
- Kenji Dohi
- Department of Emergency, Disaster and Critical Care Medicine, School of Medicine, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan.,Department of Emergency Medicine, The Jikei University School of Medicine, 3-25-8 Nishi-Shimbashi, Minato-ku, Tokyo 105-8461, Japan.,Division of Gerontology and Geriatric Medicine, Department of Medicine, University of Washington, Rm 810A, Bldg 1 VAPSHCS/GRECC S-182, 1660 S, Columbian Way, Seattle, WA 98108, USA
| | - Kazue Satoh
- Department of Anatomy, School of Medicine, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Kazuyuki Miyamoto
- Department of Emergency, Disaster and Critical Care Medicine, School of Medicine, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Shusuke Momma
- Department of Emergency, Disaster and Critical Care Medicine, School of Medicine, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Kenichiro Fukuda
- Department of Emergency, Disaster and Critical Care Medicine, School of Medicine, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Ryo Higuchi
- Department of Emergency, Disaster and Critical Care Medicine, School of Medicine, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Hirokazu Ohtaki
- Department of Anatomy, School of Medicine, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Williams A Banks
- Division of Gerontology and Geriatric Medicine, Department of Medicine, University of Washington, Rm 810A, Bldg 1 VAPSHCS/GRECC S-182, 1660 S, Columbian Way, Seattle, WA 98108, USA
| |
Collapse
|
13
|
Iketani M, Ohsawa I. Molecular Hydrogen as a Neuroprotective Agent. Curr Neuropharmacol 2017; 15:324-331. [PMID: 27281176 PMCID: PMC5412697 DOI: 10.2174/1570159x14666160607205417] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Revised: 04/28/2016] [Accepted: 05/31/2016] [Indexed: 11/22/2022] Open
Abstract
Oxidative stress and neuroinflammation cause many neurological disorders. Recently, it has been reported that molecular hydrogen (H2) functions as an antioxidant and anti-inflammatory agent. The routes of H2 administration in animal model and human clinical studies are roughly classified into three types, inhalation of H2 gas, drinking H2-dissolved water, and injection of H2-dissolved saline. This review discusses some of the remarkable progress that has been made in the research of H2 use for neurological disorders, such as cerebrovascular diseases, neurodegenerative disorders, and neonatal brain disorders. Although most neurological disorders are currently incurable, these studies suggest the clinical potential of H2 administration for their prevention, treatment, and mitigation. Several of the potential effectors of H2 will also be discussed, including cell signaling molecules and hormones that are responsible for preventing oxidative stress and inflammation. Nevertheless, further investigation will be required to determine the direct target molecule of H2.
Collapse
Affiliation(s)
| | - Ikuroh Ohsawa
- Biological Process of Aging, Tokyo Metropolitan Institute of Gerontology, 35-2 Sakae-cho, Itabashi-ku, Tokyo 173-0015, Japan
| |
Collapse
|
14
|
Imai K, Kotani T, Tsuda H, Mano Y, Nakano T, Ushida T, Li H, Miki R, Sumigama S, Iwase A, Hirakawa A, Ohno K, Toyokuni S, Takeuchi H, Mizuno T, Suzumura A, Kikkawa F. Neuroprotective potential of molecular hydrogen against perinatal brain injury via suppression of activated microglia. Free Radic Biol Med 2016; 91:154-63. [PMID: 26709014 DOI: 10.1016/j.freeradbiomed.2015.12.015] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Revised: 12/09/2015] [Accepted: 12/14/2015] [Indexed: 12/15/2022]
Abstract
Exposure to inflammation in utero is related to perinatal brain injury, which is itself associated with high rates of long-term morbidity and mortality in children. Novel therapeutic interventions during the perinatal period are required to prevent inflammation, but its pathogenesis is incompletely understood. Activated microglia are known to play a central role in brain injury by producing a variety of pro-inflammatory cytokines and releasing oxidative products. The study is aimed to investigate the preventative potential of molecular hydrogen (H2), which is an antioxidant and anti-inflammatory agent without mutagenicity. Pregnant ICR mice were injected with lipopolysaccharide (LPS) intraperitoneally on embryonic day 17 to create a model of perinatal brain injury caused by prenatal inflammation. In this model, the effect of maternal administration of hydrogen water (HW) on pups was also evaluated. The levels of pro-inflammatory cytokines, oxidative damage and activation of microglia were determined in the fetal brains. H2 reduced the LPS-induced expression of pro-inflammatory cytokines, oxidative damage and microglial activation in the fetal brains. Next, we investigated how H2 contributes to neuroprotection, focusing on microglia, using primary cultured microglia and neurons. H2 prevented LPS- or cytokine-induced generation of reactive oxidative species by microglia and reduced LPS-induced microglial neurotoxicity. Finally, we identified several molecules influenced by H2, involved in the process of activating microglia. These results suggested that H2 holds promise for the prevention of inflammation related to perinatal brain injury.
Collapse
Affiliation(s)
- Kenji Imai
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
| | - Tomomi Kotani
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan.
| | - Hiroyuki Tsuda
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
| | - Yukio Mano
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
| | - Tomoko Nakano
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
| | - Takafumi Ushida
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
| | - Hua Li
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
| | - Rika Miki
- Laboratory of Bell Research Centre-Department of Obstetrics and Gynecology Collaborative Research, Bell Research Centre for Reproductive Health and Cancer, Department of Reproduction, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
| | - Seiji Sumigama
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
| | - Akira Iwase
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
| | - Akihiro Hirakawa
- Biostatistics Section, Center for Advanced Medicine and Clinical Research Cancer, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
| | - Kinji Ohno
- Division of Neurogenetics, Center for Neurological Diseases and Cancer, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
| | - Shinya Toyokuni
- Department of Pathology and Biological Responses, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
| | - Hideyuki Takeuchi
- Department of Neuroimmunology, Research Institute of Environmental Medicine, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
| | - Tetsuya Mizuno
- Department of Neuroimmunology, Research Institute of Environmental Medicine, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
| | - Akio Suzumura
- Department of Neuroimmunology, Research Institute of Environmental Medicine, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
| | - Fumitaka Kikkawa
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
| |
Collapse
|