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Takahashi K, Tsuji M, Nakagawasai O, Miyagawa K, Kurokawa K, Mochida-Saito A, Iwasa M, Iwasa H, Suzuki S, Takeda H, Tadano T. Anxiolytic effects of Enterococcus faecalis 2001 on a mouse model of colitis. Sci Rep 2024; 14:11519. [PMID: 38769131 PMCID: PMC11106339 DOI: 10.1038/s41598-024-62309-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Accepted: 05/15/2024] [Indexed: 05/22/2024] Open
Abstract
Ulcerative colitis (UC) is a refractory inflammatory bowel disease, which is known to cause psychiatric disorders such as anxiety and depression at a high rate in addition to peripheral inflammatory symptoms. However, the pathogenesis of these psychiatric disorders remains mostly unknown. While prior research revealed that the Enterococcus faecalis 2001 (EF-2001) suppressed UC-like symptoms and accompanying depressive-like behaviors, observed in a UC model using dextran sulfate sodium (DSS), whether it has an anxiolytic effect remains unclear. Therefore, we examined whether EF-2001 attenuates DSS-induced anxiety-like behaviors. Treatment with 2% DSS for seven days induced UC-like symptoms and anxiety-like behavior through the hole-board test, increased serum lipopolysaccharide (LPS) and corticosterone concentration, and p-glucocorticoid receptor (GR) in the prefrontal cortex (PFC), and decreased N-methyl-D-aspartate receptor subunit (NR) 2A and NR2B expression levels in the PFC. Interestingly, these changes were reversed by EF-2001 administration. Further, EF-2001 administration enhanced CAMKII/CREB/BDNF-Drebrin pathways in the PFC of DSS-treated mice, and labeling of p-GR, p-CAMKII, and p-CREB showed colocalization with neurons. EF-2001 attenuated anxiety-like behavior by reducing serum LPS and corticosterone levels linked to the improvement of UC symptoms and by facilitating the CAMKII/CREB/BDNF-Drebrin pathways in the PFC. Our findings suggest a close relationship between UC and anxiety.
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Affiliation(s)
- Kohei Takahashi
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi, 324-8501, Japan
| | - Minoru Tsuji
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi, 324-8501, Japan.
| | - Osamu Nakagawasai
- Division of Pharmacology, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, 4-4-1 Komatsushima, Aoba-Ku, Sendai, Miyagi, 981-8558, Japan
| | - Kazuya Miyagawa
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi, 324-8501, Japan
| | - Kazuhiro Kurokawa
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi, 324-8501, Japan
| | - Atsumi Mochida-Saito
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi, 324-8501, Japan
| | - Masahiro Iwasa
- Nihon Berm Co., Ltd., 16-12, Nihonbashi-Kodenmacho, Chuo-Ku, Tokyo, 103-0001, Japan
| | - Hiroyuki Iwasa
- Nihon Berm Co., Ltd., 16-12, Nihonbashi-Kodenmacho, Chuo-Ku, Tokyo, 103-0001, Japan
| | - Shigeo Suzuki
- Nihon Berm Co., Ltd., 16-12, Nihonbashi-Kodenmacho, Chuo-Ku, Tokyo, 103-0001, Japan
| | - Hiroshi Takeda
- Department of Pharmacology, School of Pharmacy at Fukuoka, International University of Health and Welfare, 137-1 Enokizu, Okawa, Fukuoka, 831-8501, Japan
| | - Takeshi Tadano
- Division of Pharmacology, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, 4-4-1 Komatsushima, Aoba-Ku, Sendai, Miyagi, 981-8558, Japan
- Department of Environment and Preventive Medicine, Graduate School of Medicine Sciences, Kanazawa University, 13-1 Takaramachi, Kanazawa, Ishikawa, 920-8640, Japan
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Boeder AM, Spiller F, Carlstrom M, Izídio GS. Enterococcus faecalis: implications for host health. World J Microbiol Biotechnol 2024; 40:190. [PMID: 38702495 DOI: 10.1007/s11274-024-04007-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2024] [Accepted: 04/26/2024] [Indexed: 05/06/2024]
Abstract
The microbiota represents a crucial area of research in maintaining human health due to its potential for uncovering novel biomarkers, therapies, and molecular mechanisms relevant to population identification and experimental model characterization. Among these microorganisms, Enterococcus faecalis, a Gram-positive bacterium found in the gastrointestinal tract of humans and animals, holds particular significance. Strains of this bacterial species have sparked considerable debate in the literature due to their dual nature; they can either be utilized as probiotics in the food industry or demonstrate resistance to antibiotics, potentially leading to severe illness, disability, and death. Given the diverse characteristics of Enterococcus faecalis strains, this review aims to provide a comprehensive understanding of their impact on various systems within the host, including the immunological, cardiovascular, metabolic, and nervous systems. Furthermore, we summarize the bacterium-host interaction characteristics and molecular effects to highlight their targets, features, and overall impact on microbial communities and host health.
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Affiliation(s)
- Ariela Maína Boeder
- Department of Pharmacology, Federal University of Santa Catarina, Florianópolis, Brazil
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Fernando Spiller
- Department of Pharmacology, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Mattias Carlstrom
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Geison Souza Izídio
- Department of Pharmacology, Federal University of Santa Catarina, Florianópolis, Brazil.
- Department of Cell Biology, Embryology and Genetics, Federal University of Santa Catarina, Florianópolis, Brazil.
- Department of Psychiatry and Legal Medicine, Autonomous University of Barcelona, Barcelona, Spain.
- Laboratório de Genética do Comportamento, Universidade Federal de Santa Catarina, Centro de Ciências Biológicas, Departamento de Biologia Celular, Embriologia e Genética, Florianopolis, SC, Brazil.
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Takahashi K, Tsuji M, Nakagawasai O, Katsuyama S, Miyagawa K, Kurokawa K, Mochida-Saito A, Takeda H, Tadano T. Polarization to M1-type microglia in the hippocampus is involved in depression-like behavior in a mouse model of olfactory dysfunction. Neurochem Int 2024; 175:105723. [PMID: 38490486 DOI: 10.1016/j.neuint.2024.105723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 02/26/2024] [Accepted: 03/12/2024] [Indexed: 03/17/2024]
Abstract
Impaired olfactory function may be associated with the development of psychiatric disorders such as depression and anxiety; however, knowledge on the mechanisms underlying psychiatric disorders is incomplete. A reversible model of olfactory dysfunction, zinc sulfate (ZnSO4) nasal-treated mice, exhibit depression-like behavior accompanying olfactory dysfunction. Therefore, we investigated olfactory function and depression-like behaviors in ZnSO4-treated mice using the buried food finding test and tail suspension test, respectively; investigated the changes in the hippocampal microglial activity and neurogenesis in the dentate gyrus by immunohistochemistry; and evaluated the inflammation and microglial polarity related-proteins in the hippocampus using western blot study. On day 14 after treatment, ZnSO4-treated mice showed depression-like behavior in the tail suspension test and recovery of the olfactory function in the buried food finding test. In the hippocampus of ZnSO4-treated mice, expression levels of ionized calcium-binding adapter molecule 1 (Iba1), cluster of differentiation 40, inducible nitric oxide synthase, interleukin (IL)-1β, IL-6, tumor necrosis factor-α, cleaved caspase-3, as well as the number of Iba1-positive cells and cell body size increased, and arginase-1 expression and neurogenesis decreased. Except for the increased IL-6, these changes were prevented by a microglia activation inhibitor, minocycline. The findings suggest that neuroinflammation due to polarization of M1-type hippocampal microglia is involved in depression accompanied with olfactory dysfunction.
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Affiliation(s)
- Kohei Takahashi
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi, 324-8501, Japan
| | - Minoru Tsuji
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi, 324-8501, Japan.
| | - Osamu Nakagawasai
- Division of Pharmacology, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, 4-4-1 Komatsushima, Aoba-ku, Sendai, Miyagi, 981-8558, Japan
| | - Soh Katsuyama
- Division of Clinical Pharmacology and Pharmaceutics, Nihon Pharmaceutical University, 10281 Komuro, Kitaadachigun, Inamachi, Saitama, 362-0806, Japan
| | - Kazuya Miyagawa
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi, 324-8501, Japan
| | - Kazuhiro Kurokawa
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi, 324-8501, Japan
| | - Atsumi Mochida-Saito
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi, 324-8501, Japan
| | - Hiroshi Takeda
- Department of Pharmacology, School of Pharmacy at Fukuoka, International University of Health and Welfare, 137-1 Enokizu, Okawa, Fukuoka, 831-8501, Japan
| | - Takeshi Tadano
- Division of Pharmacology, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, 4-4-1 Komatsushima, Aoba-ku, Sendai, Miyagi, 981-8558, Japan; Department of Environment and Preventive Medicine, Graduate School of Medicine Sciences, Kanazawa University, 13-1 Takaramachi, Kanazawa, Ishikawa, 920-8640, Japan
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Wang S, Zhou S, Han Z, Yu B, Xu Y, Lin Y, Chen Y, Jin Z, Li Y, Cao Q, Xu Y, Zhang Q, Wang YC. From gut to brain: understanding the role of microbiota in inflammatory bowel disease. Front Immunol 2024; 15:1384270. [PMID: 38576620 PMCID: PMC10991805 DOI: 10.3389/fimmu.2024.1384270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Accepted: 03/12/2024] [Indexed: 04/06/2024] Open
Abstract
With the proposal of the "biological-psychological-social" model, clinical decision-makers and researchers have paid more attention to the bidirectional interactive effects between psychological factors and diseases. The brain-gut-microbiota axis, as an important pathway for communication between the brain and the gut, plays an important role in the occurrence and development of inflammatory bowel disease. This article reviews the mechanism by which psychological disorders mediate inflammatory bowel disease by affecting the brain-gut-microbiota axis. Research progress on inflammatory bowel disease causing "comorbidities of mind and body" through the microbiota-gut-brain axis is also described. In addition, to meet the needs of individualized treatment, this article describes some nontraditional and easily overlooked treatment strategies that have led to new ideas for "psychosomatic treatment".
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Affiliation(s)
- Siyu Wang
- Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
- Department of Gastroenterology, The First Hospital of Hunan University of Chinese Medicine, Changsha, China
| | - Shuwei Zhou
- Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
- Nurturing Center of Jiangsu Province for State Laboratory of AI Imaging & Interventional Radiology, Department of Radiology, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
| | - Zhongyu Han
- Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
| | - Bin Yu
- Department of Gastroenterology, The First Hospital of Hunan University of Chinese Medicine, Changsha, China
| | - Yin Xu
- Department of Gastroenterology, The First Hospital of Hunan University of Chinese Medicine, Changsha, China
| | - Yumeng Lin
- Eye School of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yutong Chen
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Zi Jin
- Department of Anesthesiology and Pain Rehabilitation, Shanghai YangZhi Rehabilitation Hospital (Shanghai Sunshine Rehabilitation Center), School of Medicine, Tongji University, Shanghai, China
| | - Yalong Li
- Anorectal Department, The Third Affiliated Hospital of Yunnan University of Chinese Medicine, Kunming, China
| | - Qinhan Cao
- School of Clinical Medicine, Chengdu University of Traditional Chinese Medicine (TCM), Chengdu, China
| | - Yunying Xu
- Clinical Medical School, Affiliated Hospital of Chengdu University, Chengdu, China
| | - Qiang Zhang
- Department of Gastroenterology, The First Hospital of Hunan University of Chinese Medicine, Changsha, China
| | - Yuan-Cheng Wang
- Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
- Nurturing Center of Jiangsu Province for State Laboratory of AI Imaging & Interventional Radiology, Department of Radiology, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
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Takahashi K, Kurokawa K, Miyagawa K, Mochida-Saito A, Takeda H, Tsuji M. Repeated antibiotic drug treatment negatively affects memory function and glutamatergic nervous system of the hippocampus in mice. Neurosci Lett 2024; 825:137711. [PMID: 38432356 DOI: 10.1016/j.neulet.2024.137711] [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: 12/13/2023] [Revised: 02/09/2024] [Accepted: 02/29/2024] [Indexed: 03/05/2024]
Abstract
The gut microbiota is associated with memory; however, the relationship between dysbiosis-induced memory deficits and hippocampal glutamatergic neurons remains unclear. In our study, a mouse dysbiosis model showed impaired memory-related behavior in the passive avoidance test; decreased expression levels of glutaminase, excitatory amino acid transporter (EAAT)1, EAAT2, vesicular glutamate transporter 2, synaptophysin, brain-derived neurotrophic factor, doublecortin, neuronal nuclear protein, glial fibrillary acidic protein, and S100β; and decreased phosphorylation of N-methyl-D-aspartate receptor subunit 1, calmodulin-dependent protein kinase II, α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor subunit 1, and cAMP response element-binding protein in the hippocampus. This suggests that dysbiosis-induced memory dysfunction is associated with the hippocampal glutamatergic nervous system.
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Affiliation(s)
- Kohei Takahashi
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan
| | - Kazuhiro Kurokawa
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan
| | - Kazuya Miyagawa
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan
| | - Atsumi Mochida-Saito
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan
| | - Hiroshi Takeda
- Department of Pharmacology, School of Pharmacy at Fukuoka, International University of Health and Welfare, 137-1 Enokizu, Okawa, Fukuoka 831-8501, Japan
| | - Minoru Tsuji
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan.
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6
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Takahashi K, Kurokawa K, Hong L, Miyagawa K, Mochida-Saito A, Takeda H, Tsuji M. Hippocampal and gut AMPK activation attenuates enterocolitis-like symptoms and co-occurring depressive-like behavior in ulcerative colitis model mice: Involvement of brain-gut autophagy. Exp Neurol 2024; 373:114671. [PMID: 38160982 DOI: 10.1016/j.expneurol.2023.114671] [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: 08/23/2023] [Revised: 11/13/2023] [Accepted: 12/24/2023] [Indexed: 01/03/2024]
Abstract
Patients with inflammatory bowel disease, including ulcerative colitis (UC) and Crohn's disease, have a high incidence of psychiatric disorders, including depression and anxiety. However, the underlying pathogenic mechanism remains unknown. Dextran sulfate sodium (DSS)-treated mice, a model of UC, exhibit depressive-like behavior and reduced adenosine monophosphate-activated protein kinase (AMPK) activity, which regulates various physiological functions in the brain and gut. However, comprehensive studies on UC pathophysiology with co-occurring depression focused on brain-gut AMPK activity are lacking. Therefore, we aimed to investigate whether resveratrol (RES), an AMPK activator, prevented DSS-induced UC-like symptoms and depressive-like behavior. DSS treatment induced UC-like pathology and depressive-like behavior, as assessed via the tail suspension test. Moreover, western blotting and immunohistochemical studies revealed that DSS increased p-p70S6 kinase (Thr389), p62, tumor necrosis factor-α, interleukin (IL)-1β, IL-18, NLR family pyrin domain containing 3 (NLRP3), cleaved caspase-1, cleaved Gasdermin-D (GSDMD), and cleaved caspase-3 expression levels in the rectum and hippocampus, and increased CD40, iNOS, and Kelch-like ECH-associated protein 1 expression levels, and the number of Iba1-positive cells in the hippocampus, and decreased p-AMPK and LC3II/I expression levels, and the number of NF-E2-related factor 2 (Nrf2)-positive cells, and reduced neurogenesis in the hippocampus. These changes were reversed by the RES administration. RES also enhanced PGC1α and SOD1 expression in the hippocampus of DSS-treated male mice. Moreover, NLRP3 staining was observed in the neurons and microglia, and cleaved GSDMD staining in neurons in the hippocampus of DSS-treated mice. Notably, RES prevented UC-like pathology and depressive-like behavior and enhancement of autophagy, decreased rectal and hippocampal inflammatory cytokines and inflammasome, and induced the Nrf2-PGC1α-SOD1 pathway in the hippocampus, resulting in neurogenesis in the hippocampal dentate gyrus. Our findings suggest that brain-gut AMPK activation may be an important therapeutic strategy in patients with UC and depression.
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Affiliation(s)
- Kohei Takahashi
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan
| | - Kazuhiro Kurokawa
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan
| | - Lihua Hong
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan
| | - Kazuya Miyagawa
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan
| | - Atsumi Mochida-Saito
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan
| | - Hiroshi Takeda
- Department of Pharmacology, School of Pharmacy at Fukuoka, International University of Health and Welfare, 137-1 Enokizu, Okawa, Fukuoka 831-8501, Japan
| | - Minoru Tsuji
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan.
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Yin D, Zhao L, Deng S, Xie Y, Ro KS, Yang Z, Du L, Xie J, Wei D. Lactiplantibacillus plantarum X7022 Plays Roles on Aging Mice with Memory Impairment Induced by D-Galactose Through Restoring Neuronal Damage, Relieving Inflammation and Oxidative Stress. Probiotics Antimicrob Proteins 2024:10.1007/s12602-023-10208-w. [PMID: 38183568 DOI: 10.1007/s12602-023-10208-w] [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] [Accepted: 12/16/2023] [Indexed: 01/08/2024]
Abstract
In this study, Lactiplantibacillus plantarum X7022 was applied to ameliorate memory impairment of aging mice induced by D-galactose. The strain showed specific choloylglycine hydrolysis ability based on in vitro investigation. Morris water maze test showed L. plantarum X7022 administration improved learning ability and spatial memory of aging mice. The gavage of L. plantarum X7022 displayed a promising ability of relieving cerebral oxidative stress and hippocampal inflammatory condition according to the increased GSH level and SOD activity and decreased MDA level, as well as decreased TNF-α, IL-1β, and IL-6 levels. The intervention with the strain could protect neuron by regulating cell apoptosis and AChE overexpression and inhibiting amyloid-β deposition, as well as affect neuron functions by regulating CREB-BDNF signaling pathways and iNOS expression. Besides, the strain could improve fecal SCFA contents and increase the abundance of anti-inflammatory and antioxidant-related genera such as Lactobacillus, Akkermansia, and Adlercreutzia. These results suggest that L. plantarum X7022 could be a prospective therapeutic alternative for the improvement of memory impairment among the elderly.
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Affiliation(s)
- Deyi Yin
- State Key Laboratory of Bioreactor Engineering, Department of Food Science and Technology, School of Biotechnology, East China University of Science and Technology, 130 # Meilong Rd, Shanghai, 200237, People's Republic of China
| | - Li Zhao
- State Key Laboratory of Bioreactor Engineering, Department of Food Science and Technology, School of Biotechnology, East China University of Science and Technology, 130 # Meilong Rd, Shanghai, 200237, People's Republic of China
| | - Sijing Deng
- State Key Laboratory of Bioreactor Engineering, Department of Food Science and Technology, School of Biotechnology, East China University of Science and Technology, 130 # Meilong Rd, Shanghai, 200237, People's Republic of China
| | - Yaqi Xie
- State Key Laboratory of Bioreactor Engineering, Department of Food Science and Technology, School of Biotechnology, East China University of Science and Technology, 130 # Meilong Rd, Shanghai, 200237, People's Republic of China
| | - Kum-Song Ro
- State Key Laboratory of Bioreactor Engineering, Department of Food Science and Technology, School of Biotechnology, East China University of Science and Technology, 130 # Meilong Rd, Shanghai, 200237, People's Republic of China
- Department of Biotechnology, Faculty of Life Science, Kim Hyong Jik University of Education, Pyongyang, 999093, Democratic People's Republic of Korea
| | - Zeyong Yang
- Department of Anesthesiology, International Peace Maternity and Child Health Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Embryo Original Disease, Shanghai Municipal Key Clinical Specialty, Shanghai, 200030, People's Republic of China
| | - Lei Du
- State Key Laboratory of Bioreactor Engineering, Department of Food Science and Technology, School of Biotechnology, East China University of Science and Technology, 130 # Meilong Rd, Shanghai, 200237, People's Republic of China.
| | - Jingli Xie
- State Key Laboratory of Bioreactor Engineering, Department of Food Science and Technology, School of Biotechnology, East China University of Science and Technology, 130 # Meilong Rd, Shanghai, 200237, People's Republic of China.
- Shanghai Collaborative Innovation Center for Biomanufacturing (SCICB), Shanghai, 200237, People's Republic of China.
| | - Dongzhi Wei
- State Key Laboratory of Bioreactor Engineering, Department of Food Science and Technology, School of Biotechnology, East China University of Science and Technology, 130 # Meilong Rd, Shanghai, 200237, People's Republic of China
- Shanghai Collaborative Innovation Center for Biomanufacturing (SCICB), Shanghai, 200237, People's Republic of China
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Gao J, Zhao L, Cheng Y, Lei W, Wang Y, Liu X, Zheng N, Shao L, Chen X, Sun Y, Ling Z, Xu W. Probiotics for the treatment of depression and its comorbidities: A systemic review. Front Cell Infect Microbiol 2023; 13:1167116. [PMID: 37139495 PMCID: PMC10149938 DOI: 10.3389/fcimb.2023.1167116] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 03/15/2023] [Indexed: 05/05/2023] Open
Abstract
Depression is one of the most common psychiatric conditions, characterized by significant and persistent depressed mood and diminished interest, and often coexists with various comorbidities. The underlying mechanism of depression remain elusive, evidenced by the lack of an appreciate therapy. Recent abundant clinical trials and animal studies support the new notion that the gut microbiota has emerged as a novel actor in the pathophysiology of depression, which partakes in bidirectional communication between the gut and the brain through the neuroendocrine, nervous, and immune signaling pathways, collectively known as the microbiota-gut-brain (MGB) axis. Alterations in the gut microbiota can trigger the changes in neurotransmitters, neuroinflammation, and behaviors. With the transition of human microbiome research from studying associations to investigating mechanistic causality, the MGB axis has emerged as a novel therapeutic target in depression and its comorbidities. These novel insights have fueled idea that targeting on the gut microbiota may open new windows for efficient treatment of depression and its comorbidities. Probiotics, live beneficial microorganisms, can be used to modulate gut dysbiosis into a new eubiosis and modify the occurrence and development of depression and its comorbidities. In present review, we summarize recent findings regarding the MGB axis in depression and discuss the potential therapeutic effects of probiotics on depression and its comorbidities.
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Affiliation(s)
- Jie Gao
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Longyou Zhao
- Department of Laboratory Medicine, Lishui Second People’s Hospital, Lishui, Zhejiang, China
| | - Yiwen Cheng
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
- Jinan Microecological Biomedicine Shandong Laboratory, Jinan, Shandong, China
| | - Wenhui Lei
- Jinan Microecological Biomedicine Shandong Laboratory, Jinan, Shandong, China
- Department of Laboratory Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Yu Wang
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Xia Liu
- Department of Intensive Care Unit, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Nengneng Zheng
- Department of Obstetrics, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Li Shao
- School of Clinical Medicine, Institute of Hepatology and Metabolic Diseases, Hangzhou Normal University, The Affiliated Hospital of Hangzhou Normal University, Hangzhou, Zhejiang, China
| | - Xulei Chen
- Department of Psychiatry, Lishui Second People’s Hospital, Lishui, Zhejiang, China
| | - Yilai Sun
- Department of Psychiatry, Lishui Second People’s Hospital, Lishui, Zhejiang, China
| | - Zongxin Ling
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
- Jinan Microecological Biomedicine Shandong Laboratory, Jinan, Shandong, China
| | - Weijie Xu
- Department of Psychiatry, Lishui Second People’s Hospital, Lishui, Zhejiang, China
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Takahashi K, Hong L, Kurokawa K, Miyagawa K, Mochida-Saito A, Takeda H, Tsuji M. Brexpiprazole prevents colitis-induced depressive-like behavior through myelination in the prefrontal cortex. Prog Neuropsychopharmacol Biol Psychiatry 2023; 121:110666. [PMID: 36273507 DOI: 10.1016/j.pnpbp.2022.110666] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 10/10/2022] [Accepted: 10/15/2022] [Indexed: 11/18/2022]
Abstract
Patients with inflammatory bowel disease (IBD) have higher rates of psychiatric pathology including depression. The dextran sulfate sodium (DSS)-treated mice exhibit IBD- and depressive-like phenotypes. A disturbed intestinal environment causes a decrease in serotonin and abnormal myelination in the brain, along with depressive-like behavior in rodents. However, the involvement of these factors in DSS-induced depressive-like behavior in mice remains unclear. In this study, we examined whether myelin proteins in the prefrontal cortex (PFC) and hippocampi were altered in DSS-treated mice, along with the changes in the serotonergic system in the PFC by western blotting and HPLC. The effects of brexpiprazole (Brx), a serotonin modulator, on DSS-induced depressive-like behavior using the tail-suspension test were evaluated. Subsequently, we investigated Brx's effects on the levels of myelin, nodal proteins, and neurotrophic molecules in the PFC with western blotting, and examined the altered node of Ranvier formation by immunohistochemistry. DSS-treated mice showed a reduction in myelin and nodal proteins, dysfunction of the serotonergic system, and impaired formation of the nodes of Ranvier in the PFC. Brx administration prevented the DSS-induced depressive-like behavior and demyelination in the PFC. However, the Brx-mediated effects were inhibited by the selective 5-HT1A antagonist, WAY100635, or the selective TrkB antagonist, ANA-12. Brx decreased the phosphorylation of ERK, CREB, and TrkB along with the expression of BDNF in the PFC of DSS-treated mice. Moreover, the effects of Brx were blocked by WAY100635. These findings indicated that myelination regulated by the activation of the ERK1/2-CREB-BDNF-TrkB pathway in the PFC may be involved in mediating the antidepressant effects of Brx.
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Affiliation(s)
- Kohei Takahashi
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan
| | - Lihua Hong
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan
| | - Kazuhiro Kurokawa
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan
| | - Kazuya Miyagawa
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan
| | - Atsumi Mochida-Saito
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan
| | - Hiroshi Takeda
- Department of Pharmacology, School of Pharmacy at Fukuoka, International University of Health and Welfare, 137-1 Enokizu, Okawa, Fukuoka 831-8501, Japan
| | - Minoru Tsuji
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan.
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Takahashi K, Tsuji M, Nakagawasai O, Katsuyama S, Hong L, Miyagawa K, Kurokawa K, Mochida-Saito A, Takeda H, Tadano T. Donepezil prevents olfactory dysfunction and α-synuclein aggregation in the olfactory bulb by enhancing autophagy in zinc sulfate-treated mice. Behav Brain Res 2023; 438:114175. [PMID: 36309244 DOI: 10.1016/j.bbr.2022.114175] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 09/18/2022] [Accepted: 10/04/2022] [Indexed: 11/07/2022]
Abstract
Alzheimer's disease is associated with marked olfactory dysfunction observed in the early stages. Clinical studies reported that acetylcholinesterase inhibitor donepezil (DNP) attenuated this deficit; however, the underlying mechanism remains unclear. Herein, we aimed to examine the effects and underlying mechanisms of DNP on olfactory deficits in zinc sulfate (ZnSO4) nasal-treated mice, which were used as a model of reversible olfactory impairment. We evaluated olfactory function using the buried food finding test and neurogenesis in the subventricular zone (SVZ) using immunohistochemistry. Finally, we measured the expression of doublecortin (DCX), neuronal nuclear antigen (NeuN), olfactory marker protein, tyrosine hydroxylase (TH), tryptophan hydroxylase 2, glutamic acid decarboxylase 67, p-α-synuclein (Ser129), α-synuclein, p-AMPK, p-p70S6 kinase (p70S6K) (Thr389), LC3 Ⅱ/Ⅰ, and p-p62 in the olfactory bulb (OB) by western blotting. On day 7 after treatment, ZnSO4-treated mice exhibited prolonged time to find the buried food, cell proliferation enhancement in the SVZ, increased NeuN, p-α-synuclein (Ser129), and α-synuclein levels, and decreased DCX and TH levels in the OB; except for TH, these changes normalized on day 14 after treatment. Repeated administration of DNP prevented the ZnSO4-induced changes on day 7 after treatment. Moreover, DNP increased p-AMPK and LC3 Ⅱ/Ⅰ, and decreased p-p70S6K and p-p62 (Ser351) levels in the OB, suggesting that DNP enhances autophagy in the OB. These findings indicate that DNP may help prevent olfactory dysfunction by autophagy that reduces α-synuclein aggregation via the AMPK/mTOC1 pathway.
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Affiliation(s)
- Kohei Takahashi
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan
| | - Minoru Tsuji
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan.
| | - Osamu Nakagawasai
- Division of Pharmacology, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, 4-4-1 Komatsushima, Aoba-ku, Sendai, Miyagi 981-8558, Japan
| | - Soh Katsuyama
- Division of Clinical Pharmacology and Pharmaceutics, Nihon Pharmaceutical University, 10281 Komuro, Kitaadachigun Inamachi, Saitama 362-0806, Japan
| | - Lihua Hong
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan
| | - Kazuya Miyagawa
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan
| | - Kazuhiro Kurokawa
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan
| | - Atsumi Mochida-Saito
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan
| | - Hiroshi Takeda
- Department of Pharmacology, School of Pharmacy at Fukuoka, International University of Health and Welfare, 137-1 Enokizu, Okawa, Fukuoka 831-8501, Japan
| | - Takeshi Tadano
- Division of Pharmacology, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, 4-4-1 Komatsushima, Aoba-ku, Sendai, Miyagi 981-8558, Japan; Department of Environment and Preventive Medicine, Graduate School of Medicine Sciences, Kanazawa University, 13-1 Takaramachi, Kanazawa, Ishikawa 920-8640, Japan
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11
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Lu Q, Tan D, Luo J, Ye Y, Zuo M, Wang S, Li C. Potential of natural products in the treatment of irritable bowel syndrome. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2022; 106:154419. [PMID: 36087525 DOI: 10.1016/j.phymed.2022.154419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 07/29/2022] [Accepted: 08/26/2022] [Indexed: 02/05/2023]
Abstract
BACKGROUND Irritable bowel syndrome (IBS) is a kind of functional bowel disease that is characterized by bellyache, abdominal distension, and diarrhea. Although not life-threatening, IBS has a long course and recurrent attacks and seriously affects the life quality of patients. Current drugs for treating IBS possess remarkable limitations, such as limited efficacy and severe adverse reactions. Therefore, developing novel medications to treat IBS is quite essential, and natural products may be a substantial source. PURPOSE This is the first systematic review elaborating the recent advancement of natural products as potential drugs for the therapy of IBS. METHODS A comprehensive retrieval of studies was carried out in scientific databases including PubMed, Web of Science, Elsevier, and CNKI. By using ("irritable bowel syndrome" OR "IBS") AND ("natural product" OR "natural compound" OR "phytochemical") as keywords, the eligible studies were screened, and the relevant information about therapeutic action and mechanism of natural products treating IBS was extracted. RESULTS Natural products against IBS consisted of four categories, namely, terpenoids, flavonoids, alkaloids, and phenols. Furthermore, the underlying mechanisms for natural products treating IBS were tightly associated with increased TJs and mucus protein expression, regulation of the brain-gut axis and gut microbiota structure, and inhibition of inflammatory response and intestinal mucosal damage. CONCLUSION Natural products could be extremely prospective candidate drugs used to treat IBS, and further preclinical and clinical researches are needed to guarantee their efficacy and safety.
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Affiliation(s)
- Qiang Lu
- Department of Pharmaceutical Sciences, Zunyi Medical University, Zhuhai Campus, Zhuhai 519041, PR China
| | - Daopeng Tan
- College of Pharmacy, Zunyi Medical University, Zunyi 563000, PR China
| | - Jingbin Luo
- China Traditional Chinese Medicine Holdings Company Limited, Foshan 528000, PR China
| | - Yonghao Ye
- Zhuhai Resproly Pharmaceutical Technology Company Limited, Zhuhai 519040, PR China
| | - Manhua Zuo
- Department of Nursing, Zunyi Medical University, Zhuhai Campus, Zhuhai 519041, PR China
| | - Siyu Wang
- Department of Pharmaceutical Sciences, Zunyi Medical University, Zhuhai Campus, Zhuhai 519041, PR China
| | - Cailan Li
- Department of Pharmacology, Zunyi Medical University, Zhuhai Campus, Zhuhai 519041, PR China; Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi 563000, PR China; Key Laboratory of Basic Pharmacology of Guizhou Province and School of Pharmacy, Zunyi Medical University, Zunyi 563000, PR China.
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The Gut–Immune–Brain Axis: An Important Route for Neuropsychiatric Morbidity in Inflammatory Bowel Disease. Int J Mol Sci 2022; 23:ijms231911111. [PMID: 36232412 PMCID: PMC9570400 DOI: 10.3390/ijms231911111] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 09/15/2022] [Accepted: 09/16/2022] [Indexed: 11/17/2022] Open
Abstract
Inflammatory bowel disease (IBD) comprises Crohn’s disease (CD) and ulcerative colitis (UC) and is associated with neuropsychiatric symptoms like anxiety and depression. Both conditions strongly worsen IBD disease burden. In the present review, we summarize the current understanding of the pathogenesis of depression and anxiety in IBD. We present a stepwise cascade along a gut–immune–brain axis initiated by evasion of chronic intestinal inflammation to pass the epithelial and vascular barrier in the gut and cause systemic inflammation. We then summarize different anatomical transmission routes of gut-derived peripheral inflammation into the central nervous system (CNS) and highlight the current knowledge on neuroinflammatory changes in the CNS of preclinical IBD mouse models with a focus on microglia, the brain-resident macrophages. Subsequently, we discuss how neuroinflammation in IBD can alter neuronal circuitry to trigger symptoms like depression and anxiety. Finally, the role of intestinal microbiota in the gut–immune–brain axis in IBD will be reviewed. A more comprehensive understanding of the interaction between the gastrointestinal tract, the immune system and the CNS accounting for the similarities and differences between UC and CD will pave the path for improved prediction and treatment of neuropsychiatric comorbidities in IBD and other inflammatory diseases.
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Takahashi K, Kurokawa K, Hong L, Miyagawa K, Mochida-Saito A, Takeda H, Tsuji M. Correlation between the reduction in hippocampal SirT2 expression and depressive-like behaviors and neurological abnormalities in olfactory bulbectomized mice. Neurosci Res 2022; 182:76-80. [DOI: 10.1016/j.neures.2022.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 05/22/2022] [Accepted: 06/02/2022] [Indexed: 10/18/2022]
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Antidepressant effects of Enterococcus faecalis 2001 through the regulation of prefrontal cortical myelination via the enhancement of CREB/BDNF and NF-κB p65/LIF/STAT3 pathways in olfactory bulbectomized mice. J Psychiatr Res 2022; 148:137-148. [PMID: 35123326 DOI: 10.1016/j.jpsychires.2022.01.047] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 01/24/2022] [Accepted: 01/26/2022] [Indexed: 12/14/2022]
Abstract
A therapeutic strategy through the gut-brain axis has been proven to be effective in treatment for depression. In our previous study, we demonstrated that Enterococcus faecalis 2001 (EF-2001) prevents colitis-induced depressive-like behavior through the gut-brain axis in mice. More recently, we found that demyelination in the prefrontal cortex (PFC) was associated with depressive-like behavior in an animal model of major depressive disorder, olfactory bulbectomized (OBX) mice. The present study investigated the effects of EF-2001 on depressive-like behaviors in OBX mice and the underlying molecular mechanisms from the perspective of myelination in the PFC. OBX mice exhibited depressive-like behaviors in the tail-suspension, splash, and sucrose preference tests, and decreased myelin and paranodal proteins along with mature oligodendrocytes in the PFC. These behavioral and biochemical changes were all prevented by treatment with EF-2001. Further, EF-2001 treatment increased brain-derived neurotrophic factor (BDNF) and leukemia inhibitory factor (LIF) in the PFC. Interestingly, an immunohistochemical analysis revealed enhanced phospho (p) -cAMP-responsive element binding protein (CREB) expression in neurons, p-nuclear factor-kappa B (NFκB) p65 (Ser536) expression in astrocytes, and p-signal transducer and activator of transcription 3 (STAT3) (Ty705) expression in mature oligodendrocytes in the PFC of OBX mice. From these results, we suggest that EF-2001 administration prevents depressive-like behaviors by regulating prefrontal cortical myelination via the enhancement of CREB/BDNF and NFκB p65/LIF/STAT3 pathways. Our findings strongly support the idea that a therapeutic strategy involving the gut microbiota may be a promising alternative treatment for alleviating symptoms of depression.
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Wang XF, Xiao HH, Wu YT, Kong L, Chen JC, Yang JX, Hu XL. Active constituent of Polygala tenuifolia attenuates cognitive deficits by rescuing hippocampal neurogenesis in APP/PS1 transgenic mice. BMC Complement Med Ther 2021; 21:267. [PMID: 34696749 PMCID: PMC8543956 DOI: 10.1186/s12906-021-03437-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 10/06/2021] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Alzheimer's disease (AD) is the most common dementia worldwide, and there is still no satisfactory drug or therapeutic strategy. Polygala tenuifolia is a traditional Chinese medicine with multiple neuroprotective effects. In present study, we investigated the effects of three active constituents [3,6'-disinapoyl sucrose (DISS), onjisaponin B (OB) and tenuifolin (TEN)] of Polygala tenuifolia (PT) on the proliferation and differentiation of neural stem cells (NSCs) to identify the potential active constituent of PT promoting hippocampal neurogenesis. METHODS NSCs were isolated from hippocampi of newborn C57BL/6 mice, and transfected with mutant amyloid precursor protein (APP) gene to establish an AD cell model (APP-NSCs). 3-(4,5- Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) and lactate dehydrogenase (LDH) assays were performed, and the proliferation and differentiation of NSCs were assessed by neurosphere formation assay, 5-bromo-2'-deoxyuridine (BrdU) incorporation assay and immunofluorescence (IF) staining analysis. APP/PS1 transgenic mice were administrated with the potential active constituent DISS for 4 weeks. Morris water maze (MWM), Nissl staining assay and IF staining assays were carried out to evaluate the cognitive function, neural damages and hippocampal neurogenesis, respectively. RESULTS DISS exerted the optimal ability to strengthen APP-NSCs proliferation and neuronal differentiation, followed by OB and TEN. Furthermore, DISS treatment for 4 weeks strikingly rescued the cognitive deficits, neuronal injures, and neurogenesis disorder in adult APP/PS1 transgenic mice. CONCLUSIONS Our findings demonstrated that DISS is the constituent of PT that triggers the most potent increase of hippocampal neurogenesis in our mouse model of AD.
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Affiliation(s)
- Xiao-Feng Wang
- Center for Neuromedicine of Dalian Municipal Central Hospital, 42 Xuegong Street, Shahekou District, Dalian, Liaoning Province, 116033, People's Republic of China
| | - Hong-He Xiao
- School of Pharmacy, Liaoning University of Traditional Chinese Medicine, 77 Life One Road, DD Port, Dalian, Liaoning Province, 116600, People's Republic of China
| | - Yu-Tong Wu
- School of Pharmacy, Liaoning University of Traditional Chinese Medicine, 77 Life One Road, DD Port, Dalian, Liaoning Province, 116600, People's Republic of China
| | - Liang Kong
- School of Pharmacy, Liaoning University of Traditional Chinese Medicine, 77 Life One Road, DD Port, Dalian, Liaoning Province, 116600, People's Republic of China
| | - Ji-Cong Chen
- School of Pharmacy, Liaoning University of Traditional Chinese Medicine, 77 Life One Road, DD Port, Dalian, Liaoning Province, 116600, People's Republic of China
| | - Jing-Xian Yang
- School of Pharmacy, Liaoning University of Traditional Chinese Medicine, 77 Life One Road, DD Port, Dalian, Liaoning Province, 116600, People's Republic of China.
| | - Xiao-le Hu
- Center for Neuromedicine of Dalian Municipal Central Hospital, 42 Xuegong Street, Shahekou District, Dalian, Liaoning Province, 116033, People's Republic of China.
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Activation of 5-HT 1A receptor reduces abnormal emotionality in stress-maladaptive mice by alleviating decreased myelin protein in the ventral hippocampus. Neurochem Int 2021; 151:105213. [PMID: 34673172 DOI: 10.1016/j.neuint.2021.105213] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 10/03/2021] [Accepted: 10/18/2021] [Indexed: 11/21/2022]
Abstract
We previously reported that abnormal emotionality in stress-maladaptive mice was ameliorated by chronic treatment with flesinoxan, a 5-HT1A receptor agonist. Furthermore, the maintenance of hippocampal myelination appeared to contribute to the development of stress adaptation in mice. However, the effects of 5-HT1A receptor activation on myelination under the stress-maladaptive situations and the underlying mechanisms remain unknown. In the present study, we examined using flesinoxan whether activation of 5-HT1A receptor can reduce an abnormal emotional response by acting on oligodendrocytes to preserve myelin proteins in stress-maladaptive mice. Mice were exposed to repeated restraint stress for 4 h/day for 14 days as a stress-maladaptive model. Flesinoxan was given intraperitoneally immediately after the daily exposure to restraint stress. After the final exposure to restraint stress, the emotionality of mice was evaluated by the hole-board test. The expression levels of brain-derived neurotrophic factor (BDNF), phosphorylated-extracellular signal-regulated kinase (p-ERK), phosphorylated-cAMP response element-binding protein (p-CREB), myelin-associated glycoprotein (MAG), myelin basic protein (MBP) and oligodendrocyte transcription factor 2 (olig2) in the hippocampus was assessed by western blotting. Hippocampal oligodendrogenesis were examined by immunohistochemistry. Chronic treatment with flesinoxan suppressed the decrease in head-dipping behaviors in stress-maladaptive mice in the hole-board test. Under this condition, the decreases in MAG and MBP in the hippocampus recovered with increase in BDNF, p-ERK, p-CREB, and olig2. Furthermore, hippocampal oligodendrogenesis in stress-maladaptive mice was promoted by chronic treatment with flesinoxan. These findings suggest that 5-HT1A receptor activation may promote oligodendrogenesis and myelination via an ERK/CREB/BDNF signaling pathway in the hippocampus and reduces abnormal emotionality due to maladaptation to excessive stress.
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Akai H, Miyagawa K, Takahashi K, Mochida-Saito A, Kurokawa K, Takeda H, Tsuji M, Sugawara H, Yasaka K, Kunimatsu A, Inoue Y, Abe O, Ohtomo K, Kiryu S. Effects of Gadolinium Deposition in the Brain on Motor or Behavioral Function: A Mouse Model. Radiology 2021; 301:409-416. [PMID: 34463554 DOI: 10.1148/radiol.2021210892] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Background Recent studies showing gadolinium deposition in multiple organs have raised concerns about the safety of gadolinium-based contrast agents (GBCAs). Purpose To explore whether gadolinium deposition in brain structures will cause any motor or behavioral alterations. Materials and Methods This study was performed from July 2019 to December 2020. Groups of 17 female BALB/c mice were each repeatedly injected with phosphate-buffered saline (control group, group A), a macrocyclic GBCA (group B), or a linear GBCA (group C) for 8 weeks (5 mmol per kilogram of bodyweight per week for GBCAs). Brain MRI studies were performed every other week to observe the signal intensity change caused by the gadolinium deposition. After the injection period, rotarod performance test, open field test, elevated plus-maze test, light-dark anxiety test, locomotor activity assessment test, passive avoidance memory test, Y-maze test, and forced swimming test were performed to assess the locomotor abilities, anxiety level, and memory. Among-group differences were compared by using one-way or two-way factorial analysis of variance with Tukey post hoc testing or Dunnett post hoc testing. Results Gadolinium deposition in the bilateral deep cerebellar nuclei was confirmed with MRI only in mice injected with a linear GBCA. At 8 weeks, contrast ratio of group C (0.11; 95% CI: 0.10, 0.12) was higher than that of group A (-2.1 × 10-3; 95% CI: -0.011, 7.5 × 10-3; P < .001) and group B (2.7 × 10-4; 95% CI: -8.2 × 10-3, 8.7 × 10-3; P < .001). Behavioral analyses showed that locomotor abilities, anxiety level, and long-term or short-term memory were not different in mice injected with linear or macrocyclic GBCAs. Conclusion No motor or behavioral alterations were observed in mice with brain gadolinium deposition. Also, the findings support the safety of macrocyclic gadolinium-based contrast agents. © RSNA, 2021 Online supplemental material is available for this article. See also the editorial by Chen in this issue.
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Affiliation(s)
- Hiroyuki Akai
- From the Department of Radiology, Institute of Medical Science, University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan (H.A., H.S., K.Y., A.K.); Department of Pharmacology, and School of Pharmacy (K.M., K.T., A.M.S., K.K., M.T.), and International University of Health and Welfare (K.O.), Ohtawara, Tochigi, Japan; Department of Pharmacology, School of Pharmacy at Fukuoka, International University of Health and Welfare, Okawa, Fukuoka, Japan (H.T.); Department of Diagnostic Radiology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan (Y.I.); Department of Radiology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan (O.A.); and Department of Radiology, International University of Health and Welfare, Narita, Chiba, Japan (S.K.)
| | - Kazuya Miyagawa
- From the Department of Radiology, Institute of Medical Science, University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan (H.A., H.S., K.Y., A.K.); Department of Pharmacology, and School of Pharmacy (K.M., K.T., A.M.S., K.K., M.T.), and International University of Health and Welfare (K.O.), Ohtawara, Tochigi, Japan; Department of Pharmacology, School of Pharmacy at Fukuoka, International University of Health and Welfare, Okawa, Fukuoka, Japan (H.T.); Department of Diagnostic Radiology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan (Y.I.); Department of Radiology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan (O.A.); and Department of Radiology, International University of Health and Welfare, Narita, Chiba, Japan (S.K.)
| | - Kohei Takahashi
- From the Department of Radiology, Institute of Medical Science, University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan (H.A., H.S., K.Y., A.K.); Department of Pharmacology, and School of Pharmacy (K.M., K.T., A.M.S., K.K., M.T.), and International University of Health and Welfare (K.O.), Ohtawara, Tochigi, Japan; Department of Pharmacology, School of Pharmacy at Fukuoka, International University of Health and Welfare, Okawa, Fukuoka, Japan (H.T.); Department of Diagnostic Radiology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan (Y.I.); Department of Radiology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan (O.A.); and Department of Radiology, International University of Health and Welfare, Narita, Chiba, Japan (S.K.)
| | - Atsumi Mochida-Saito
- From the Department of Radiology, Institute of Medical Science, University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan (H.A., H.S., K.Y., A.K.); Department of Pharmacology, and School of Pharmacy (K.M., K.T., A.M.S., K.K., M.T.), and International University of Health and Welfare (K.O.), Ohtawara, Tochigi, Japan; Department of Pharmacology, School of Pharmacy at Fukuoka, International University of Health and Welfare, Okawa, Fukuoka, Japan (H.T.); Department of Diagnostic Radiology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan (Y.I.); Department of Radiology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan (O.A.); and Department of Radiology, International University of Health and Welfare, Narita, Chiba, Japan (S.K.)
| | - Kazuhiro Kurokawa
- From the Department of Radiology, Institute of Medical Science, University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan (H.A., H.S., K.Y., A.K.); Department of Pharmacology, and School of Pharmacy (K.M., K.T., A.M.S., K.K., M.T.), and International University of Health and Welfare (K.O.), Ohtawara, Tochigi, Japan; Department of Pharmacology, School of Pharmacy at Fukuoka, International University of Health and Welfare, Okawa, Fukuoka, Japan (H.T.); Department of Diagnostic Radiology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan (Y.I.); Department of Radiology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan (O.A.); and Department of Radiology, International University of Health and Welfare, Narita, Chiba, Japan (S.K.)
| | - Hiroshi Takeda
- From the Department of Radiology, Institute of Medical Science, University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan (H.A., H.S., K.Y., A.K.); Department of Pharmacology, and School of Pharmacy (K.M., K.T., A.M.S., K.K., M.T.), and International University of Health and Welfare (K.O.), Ohtawara, Tochigi, Japan; Department of Pharmacology, School of Pharmacy at Fukuoka, International University of Health and Welfare, Okawa, Fukuoka, Japan (H.T.); Department of Diagnostic Radiology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan (Y.I.); Department of Radiology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan (O.A.); and Department of Radiology, International University of Health and Welfare, Narita, Chiba, Japan (S.K.)
| | - Minoru Tsuji
- From the Department of Radiology, Institute of Medical Science, University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan (H.A., H.S., K.Y., A.K.); Department of Pharmacology, and School of Pharmacy (K.M., K.T., A.M.S., K.K., M.T.), and International University of Health and Welfare (K.O.), Ohtawara, Tochigi, Japan; Department of Pharmacology, School of Pharmacy at Fukuoka, International University of Health and Welfare, Okawa, Fukuoka, Japan (H.T.); Department of Diagnostic Radiology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan (Y.I.); Department of Radiology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan (O.A.); and Department of Radiology, International University of Health and Welfare, Narita, Chiba, Japan (S.K.)
| | - Haruto Sugawara
- From the Department of Radiology, Institute of Medical Science, University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan (H.A., H.S., K.Y., A.K.); Department of Pharmacology, and School of Pharmacy (K.M., K.T., A.M.S., K.K., M.T.), and International University of Health and Welfare (K.O.), Ohtawara, Tochigi, Japan; Department of Pharmacology, School of Pharmacy at Fukuoka, International University of Health and Welfare, Okawa, Fukuoka, Japan (H.T.); Department of Diagnostic Radiology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan (Y.I.); Department of Radiology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan (O.A.); and Department of Radiology, International University of Health and Welfare, Narita, Chiba, Japan (S.K.)
| | - Koichiro Yasaka
- From the Department of Radiology, Institute of Medical Science, University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan (H.A., H.S., K.Y., A.K.); Department of Pharmacology, and School of Pharmacy (K.M., K.T., A.M.S., K.K., M.T.), and International University of Health and Welfare (K.O.), Ohtawara, Tochigi, Japan; Department of Pharmacology, School of Pharmacy at Fukuoka, International University of Health and Welfare, Okawa, Fukuoka, Japan (H.T.); Department of Diagnostic Radiology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan (Y.I.); Department of Radiology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan (O.A.); and Department of Radiology, International University of Health and Welfare, Narita, Chiba, Japan (S.K.)
| | - Akira Kunimatsu
- From the Department of Radiology, Institute of Medical Science, University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan (H.A., H.S., K.Y., A.K.); Department of Pharmacology, and School of Pharmacy (K.M., K.T., A.M.S., K.K., M.T.), and International University of Health and Welfare (K.O.), Ohtawara, Tochigi, Japan; Department of Pharmacology, School of Pharmacy at Fukuoka, International University of Health and Welfare, Okawa, Fukuoka, Japan (H.T.); Department of Diagnostic Radiology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan (Y.I.); Department of Radiology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan (O.A.); and Department of Radiology, International University of Health and Welfare, Narita, Chiba, Japan (S.K.)
| | - Yusuke Inoue
- From the Department of Radiology, Institute of Medical Science, University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan (H.A., H.S., K.Y., A.K.); Department of Pharmacology, and School of Pharmacy (K.M., K.T., A.M.S., K.K., M.T.), and International University of Health and Welfare (K.O.), Ohtawara, Tochigi, Japan; Department of Pharmacology, School of Pharmacy at Fukuoka, International University of Health and Welfare, Okawa, Fukuoka, Japan (H.T.); Department of Diagnostic Radiology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan (Y.I.); Department of Radiology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan (O.A.); and Department of Radiology, International University of Health and Welfare, Narita, Chiba, Japan (S.K.)
| | - Osamu Abe
- From the Department of Radiology, Institute of Medical Science, University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan (H.A., H.S., K.Y., A.K.); Department of Pharmacology, and School of Pharmacy (K.M., K.T., A.M.S., K.K., M.T.), and International University of Health and Welfare (K.O.), Ohtawara, Tochigi, Japan; Department of Pharmacology, School of Pharmacy at Fukuoka, International University of Health and Welfare, Okawa, Fukuoka, Japan (H.T.); Department of Diagnostic Radiology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan (Y.I.); Department of Radiology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan (O.A.); and Department of Radiology, International University of Health and Welfare, Narita, Chiba, Japan (S.K.)
| | - Kuni Ohtomo
- From the Department of Radiology, Institute of Medical Science, University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan (H.A., H.S., K.Y., A.K.); Department of Pharmacology, and School of Pharmacy (K.M., K.T., A.M.S., K.K., M.T.), and International University of Health and Welfare (K.O.), Ohtawara, Tochigi, Japan; Department of Pharmacology, School of Pharmacy at Fukuoka, International University of Health and Welfare, Okawa, Fukuoka, Japan (H.T.); Department of Diagnostic Radiology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan (Y.I.); Department of Radiology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan (O.A.); and Department of Radiology, International University of Health and Welfare, Narita, Chiba, Japan (S.K.)
| | - Shigeru Kiryu
- From the Department of Radiology, Institute of Medical Science, University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan (H.A., H.S., K.Y., A.K.); Department of Pharmacology, and School of Pharmacy (K.M., K.T., A.M.S., K.K., M.T.), and International University of Health and Welfare (K.O.), Ohtawara, Tochigi, Japan; Department of Pharmacology, School of Pharmacy at Fukuoka, International University of Health and Welfare, Okawa, Fukuoka, Japan (H.T.); Department of Diagnostic Radiology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan (Y.I.); Department of Radiology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan (O.A.); and Department of Radiology, International University of Health and Welfare, Narita, Chiba, Japan (S.K.)
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18
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Takahashi K, Tsuji M, Nakagawasai O, Katsuyama S, Miyagawa K, Kurokawa K, Mochida-Saito A, Iwasa M, Iwasa H, Takeda H, Tadano T. Activation of cholinergic system partially rescues olfactory dysfunction-induced learning and memory deficit in mice. Behav Brain Res 2021; 408:113283. [PMID: 33819530 DOI: 10.1016/j.bbr.2021.113283] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 03/18/2021] [Accepted: 03/30/2021] [Indexed: 02/07/2023]
Abstract
Deficits in olfaction are associated with neurodegenerative disorders such as Alzheimer's disease. A recent study reported that intranasal zinc sulfate (ZnSO4)-treated mice show olfaction and memory deficits. However, it remains unknown whether olfaction deficit-induced learning and memory impairment is associated with the cholinergic system in the brain. In this study, we evaluated olfactory function by the buried food find test, and learning and memory function by the Y-maze and passive avoidance tests in ZnSO4-treated mice. The expression of choline acetyltransferase (ChAT) protein in the olfactory bulb (OB), prefrontal cortex, hippocampus, and amygdala was assessed by western blotting. Moreover, we observed the effect of the acetylcholinesterase inhibitor physostigmine on ZnSO4-induced learning and memory deficits. We found that intranasal ZnSO4-treated mice exhibited olfactory dysfunction, while this change was recovered on day 14 after treatment. Both short-term and long-term learning and memory were impaired on days 4 and 7 after treatment with ZnSO4, whereas the former, but not the latter, was recovered on day 14 after treatment. A significant correlation was observed between olfactory function and short-term memory, but not long-term memory. Treatment with ZnSO4 decreased the ChAT level in the OB on day 4, and increased and decreased the ChAT levels in the OB and hippocampus on day 7, respectively. Physostigmine improved the ZnSO4-induced deficit in short-term, but not long-term, memory. Taken together, the present results suggest that short-term memory may be closely associated with olfactory function via the cholinergic system.
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Affiliation(s)
- Kohei Takahashi
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan
| | - Minoru Tsuji
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan.
| | - Osamu Nakagawasai
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, 4-4-1 Komatsushima, Aoba-ku, Sendai, Miyagi 981-8558, Japan
| | - Soh Katsuyama
- Division of Clinical Pharmacology and Pharmaceutics, Nihon Pharmaceutical University, 10281 Komuro, Kitaadachigun Inamachi, Saitama 362-0806, Japan
| | - Kazuya Miyagawa
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan
| | - Kazuhiro Kurokawa
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan
| | - Atsumi Mochida-Saito
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan
| | - Masahiro Iwasa
- Nihon Berm Co., Ltd, 2-14-3 Nagatachou, Chiyoda-ku, Tokyo 100-0014, Japan
| | - Hiroyuki Iwasa
- Nihon Berm Co., Ltd, 2-14-3 Nagatachou, Chiyoda-ku, Tokyo 100-0014, Japan
| | - Hiroshi Takeda
- Department of Pharmacology, School of Pharmacy at Fukuoka, International University of Health and Welfare, 137-1 Enokizu, Okawa, Fukuoka 831-8501, Japan
| | - Takeshi Tadano
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, 4-4-1 Komatsushima, Aoba-ku, Sendai, Miyagi 981-8558, Japan; Complementary and Alternative Medicine Clinical Research and Development, Graduate School of Medicine Sciences, Kanazawa University, 13-1 Takaramachi, Kanazawa, Ishikawa 920-8640, Japan
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19
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Nakagawasai O, Lin JR, Odaira T, Takahashi K, Nemoto W, Moriguchi S, Yabuki Y, Kobayakawa Y, Fukunaga K, Nakada M, Tan-No K. Scabronine G Methyl Ester Improves Memory-Related Behavior and Enhances Hippocampal Cell Proliferation and Long-Term Potentiation via the BDNF-CREB Pathway in Olfactory Bulbectomized Mice. Front Pharmacol 2020; 11:583291. [PMID: 33281604 PMCID: PMC7689418 DOI: 10.3389/fphar.2020.583291] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 09/30/2020] [Indexed: 11/30/2022] Open
Abstract
A previous study reported that scabronine G methyl ester (SG-ME) potentially enhances the in vitro secretion of neurotrophic factors such as nerve growth factor via the protein kinase C (PKC)-ζ pathway. However, it remains unknown whether SG-ME can improve cognitive dysfunctions in olfactory bulbectomized (OBX) mice. To address this question, we evaluated SG-ME-treated and untreated OBX mice in a passive avoidance test. We also investigated potential effects of SG-ME on several parameters: cell proliferation and cAMP response element-binding protein (CREB) phosphorylation in the hippocampal dentate gyrus by immunohistochemistry, brain-derived neurotrophic factor (BDNF) levels in the hippocampus by Western blotting, p-CREB levels in the hippocampus by MapAnalyzer, and long-term potentiation (LTP) by electrophysiology. On the 14th day after surgery OBX mice showed altered passive avoidance and decreases in both cell proliferation and long-term potentiation in the hippocampus, while these changes were reversed by SG-ME (20 μg/mouse) 24 h after the treatment. The improvement in memory deficits was prevented when SG-ME was co-administeredwith either zeta inhibitory peptide (PKC-ζ inhibitor), anti-BDNF antibody, ANA-12 (TrkB antagonist), U0126 (MEK inhibitor), H-89 (PKA inhibitor), LY294002 (PI3K inhibitor) or KN-93 (CaMKII inhibitor). We found that SG-ME enhanced brain-derived neurotrophic factor and p-CREB levels in the hippocampus while p-CREB was localized in neurons, but not in astrocytes nor microglial cells. These findings revealed the potential of SG-ME in improving memory impairments by enhancing cell proliferation and LTP via activation of the BDNF/CREB signaling pathway in neurons.
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Affiliation(s)
- Osamu Nakagawasai
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - Jia-Rong Lin
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - Takayo Odaira
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - Kohei Takahashi
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai, Japan.,Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, Ohtawara, Japan
| | - Wataru Nemoto
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - Shigeki Moriguchi
- Research Center for Pharmaceutical Development, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan.,Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Yasushi Yabuki
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan.,Department of Genomic Neurology, Institute of Molecular Embryology and Genetics, Kumamoto University, Kumamoto, Japan
| | - Yu Kobayakawa
- Department of Chemistry and Biochemistry, Faculty of Science and Engineering, Waseda University, Tokyo, Japan
| | - Kohji Fukunaga
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Masahisa Nakada
- Department of Chemistry and Biochemistry, Faculty of Science and Engineering, Waseda University, Tokyo, Japan
| | - Koichi Tan-No
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai, Japan
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