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Shiga T, Kono M, Murakami D, Sakatani H, Ogura K, Hotomi M. Traditional Japanese herbal medicine Hochuekkito protects development of sepsis after nasal colonization in mice. J Infect Chemother 2024:S1341-321X(24)00123-5. [PMID: 38677389 DOI: 10.1016/j.jiac.2024.04.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 04/01/2024] [Accepted: 04/24/2024] [Indexed: 04/29/2024]
Abstract
INTRODUCTION Streptococcus pneumoniae, a commensal in the nasopharynx, can cause invasive pneumococcal diseases (IPDs). To prevent the aggravation of IPDs, it is important to enhance host immune defense against S. pneumoniae. Hochuekkito (HET) is expected to have an immunostimulatory effect against infections. METHODS HET was administrated by gavage to adult BALB/cA mice before and after intranasal inoculation of S. pneumoniae. We evaluated the effect of HET on pneumococcal nasal colonization and subsequent development of lethal pneumococcal infections. RESULTS No effect on nasal colonization was observed, but HET significantly reduced bacterial count in the blood, decreased the incidence of bacteremia, and improved survival. HET also reduced nasal tissue damage 3 days after intranasal infection. Neutrophils from HET-treated mice showed significantly higher bactericidal activity against S. pneumoniae in the presence of the serum from the HET group compared with from the control group. CONCLUSIONS The non-specific immunostimulatory effect of HET is suggested by this study to be effective in preventing the progression in IPDs and provided insights into novel strategy in the post-pneumococcal vaccine era.
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Affiliation(s)
- Tatsuya Shiga
- Department of Otorhinolaryngology-Head and Neck Surgery, Wakayama Medical University, Kimiidera 811-1 Wakayama-shi, 641-8509, Wakayama, Japan
| | - Masamitsu Kono
- Department of Otorhinolaryngology-Head and Neck Surgery, Wakayama Medical University, Kimiidera 811-1 Wakayama-shi, 641-8509, Wakayama, Japan
| | - Daichi Murakami
- Department of Otorhinolaryngology-Head and Neck Surgery, Wakayama Medical University, Kimiidera 811-1 Wakayama-shi, 641-8509, Wakayama, Japan
| | - Hideki Sakatani
- Department of Otorhinolaryngology-Head and Neck Surgery, Wakayama Medical University, Kimiidera 811-1 Wakayama-shi, 641-8509, Wakayama, Japan
| | - Keisuke Ogura
- Tsumura Kampo Research Laboratories, Kampo Research & Development Division, Tsumura & Co., 3586 Yoshiwara, Ami-machi, Inashiki-gun, 300-1192, Ibaraki, Japan
| | - Muneki Hotomi
- Department of Otorhinolaryngology-Head and Neck Surgery, Wakayama Medical University, Kimiidera 811-1 Wakayama-shi, 641-8509, Wakayama, Japan.
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Vo KCT, Sato Y, Kawagoe Y, Kawamura K. Effects of Hochuekkito, a traditional Japanese medicine (Kampo), on reproduction of aging female mice. Reprod Med Biol 2021; 21:e12425. [PMID: 34938149 PMCID: PMC8658873 DOI: 10.1002/rmb2.12425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 10/25/2021] [Indexed: 11/08/2022] Open
Abstract
Purpose To determine the potentials of Hochuekkito (HET) treatment for aging infertility. Methods Mice at 36 weeks of age were fed without (control, n = 40) or with low (100 mg/kg/day, n = 24) and high (1000 mg/kg/day, n = 38) doses of HET for 12 weeks. Aging animals at 48 weeks of age were used for in vitro fertilization-embryo transfer (IVF-ET), and their ovaries were subjected to histological and quantitative inflammation analyses. Results HET administration decreased transcript levels of ovarian inflammatory markers, interleukin 6 (IL-6), IL-1β, tumor necrosis factor (TNF)-α, and interferon-gamma (IFN-γ) but suppressed ovulation rates and the number of ovulated oocytes in aging mice. Furthermore, HET treatment decreased the rates of oocytes maturation and fertilization and the cumulus-cell expression of TNF-α-induced protein 6 and epidermal growth factor receptor. After IVF-ET, no improvement of declined live offspring rate by aging was achieved by HET administration, although there were no adverse effects on embryo development and implantation as well as gross morphology and bodyweight of pups. Conclusion Present study indicated HET treatment interfered with ovulation and fertilization in aging mice without affecting ovarian follicle development. No improvement on the age-associated decline of live offspring rate and follicle development was achieved after HET treatment.
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Affiliation(s)
- Kim Cat Tuyen Vo
- Graduate School of Medicine International University of Health and Welfare School of Medicine Narita-shi Japan
| | - Yorino Sato
- Advanced Reproductive Medicine Research Center International University of Health and Welfare School of Medicine Narita-shi Japan
| | - Yuta Kawagoe
- Advanced Reproductive Medicine Research Center International University of Health and Welfare School of Medicine Narita-shi Japan
| | - Kazuhiro Kawamura
- Graduate School of Medicine International University of Health and Welfare School of Medicine Narita-shi Japan.,Advanced Reproductive Medicine Research Center International University of Health and Welfare School of Medicine Narita-shi Japan
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Isago H, Mitani A, Kohno S, Nagoshi S, Ishimori T, Saito M, Tamiya H, Miyashita N, Ishii T, Matsuzaki H, Yatomi Y, Nagase T, Jo T. The Japanese Herbal (Kampo) Medicine Hochuekkito Attenuates Lung Inflammation in Lung Emphysema. Biol Pharm Bull 2021; 44:39-45. [PMID: 33390548 DOI: 10.1248/bpb.b20-00556] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Chronic obstructive pulmonary disease (COPD) is a systemic inflammatory disorder. It often causes weight loss, which is considered a poor prognostic factor. A Japanese herbal Kampo medicine, Hochuekkito (TJ-41), has been reported to prevent systemic inflammation and weight loss in COPD patients, but the underlying biological mechanisms remain unknown. In the present study, we investigated the role of TJ-41 in vivo using a mouse model of lung emphysema. We used lung epithelium-specific Taz conditional knockout mice (Taz CKO mice) as the lung emphysema model mimicking the chronic pulmonary inflammation in COPD. Acute inflammation was induced by intratracheal lipopolysaccharide administration, simulating COPD exacerbation. Mice were fed a diet containing 2% TJ-41 or a control diet. Taz CKO mice showed increased numbers of inflammatory cells in the bronchoalveolar lavage fluid compared to control mice. This effect was reduced by TJ-41 treatment. In the acute exacerbation model, TJ-41 mitigated the increased numbers of inflammatory cells in the bronchoalveolar lavage fluid and attenuated lung inflammation in histopathological studies. Additional in vitro experiments using the human macrophage cell line U-937 demonstrated that lipopolysaccharide-induced tumor necrosis factor-alpha expression was significantly downregulated by TJ-41. These results suggest that TJ-41 has anti-inflammatory effects in lung emphysema both in the chronic phase and during an acute exacerbation. In conclusion, our study sheds light on the anti-inflammatory effects of TJ-41 in lung emphysema. This establishes its potential as a new anti-inflammatory therapy and a preventive medicine for exacerbations during the long-time maintenance of COPD patients.
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Affiliation(s)
- Hideaki Isago
- Department of Clinical Laboratory Medicine, Graduate School of Medicine, The University of Tokyo Hospital.,Department of Respiratory Medicine, Graduate School of Medicine, the University of Tokyo
| | - Akihisa Mitani
- Department of Respiratory Medicine, Graduate School of Medicine, the University of Tokyo
| | - Shiho Kohno
- Department of Respiratory Medicine, Graduate School of Medicine, the University of Tokyo
| | - Saki Nagoshi
- Department of Respiratory Medicine, Graduate School of Medicine, the University of Tokyo
| | - Taro Ishimori
- Department of Respiratory Medicine, Graduate School of Medicine, the University of Tokyo
| | - Minako Saito
- Department of Respiratory Medicine, Graduate School of Medicine, the University of Tokyo
| | - Hiroyuki Tamiya
- Department of Respiratory Medicine, Graduate School of Medicine, the University of Tokyo
| | - Naoya Miyashita
- Department of Respiratory Medicine, Graduate School of Medicine, the University of Tokyo
| | - Takashi Ishii
- Department of Respiratory Medicine, Graduate School of Medicine, the University of Tokyo
| | - Hirotaka Matsuzaki
- Department of Respiratory Medicine, Graduate School of Medicine, the University of Tokyo
| | - Yutaka Yatomi
- Department of Clinical Laboratory Medicine, Graduate School of Medicine, The University of Tokyo Hospital
| | - Takahide Nagase
- Department of Respiratory Medicine, Graduate School of Medicine, the University of Tokyo
| | - Taisuke Jo
- Department of Health Services Research, Graduate School of Medicine, the University of Tokyo
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Takayama S, Kikuchi A, Makino T, Kainuma M, Namiki T, Ito T. Basic pharmacological mechanisms and clinical evidence of the efficacy of hochuekkito against infectious diseases and its potential for use against COVID‐19. TRADITIONAL & KAMPO MEDICINE 2020. [PMCID: PMC7753421 DOI: 10.1002/tkm2.1264] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Background Hochuekkito extract (HET) has multiple effects through the digestive and immune systems, including for acute viral infection and chronic inflammation. We review basic pharmacological and clinical researches of HET and discuss the effects of HET against the pandemic COVID‐19. Methods We reviewed pharmacological studies from 1996 to 30 April 2020 that used experimental animals orally treated with HET and randomized controlled trials (RCTs) from 2000 to 30 April 2020. Results Altogether, 64 pharmacological studies reported immuno‐stimulatory effects against infection and cancer, immuno‐modulative effects against allergy and some inflammatory diseases, and ameliorating effects against exhaustion and frailty. Nine RCTs showed improvement of pulmonary Mycobacterium avium complex disease on chest X‐ray; improved systemic inflammation, nutrition, and quality of life of patients with chronic obstructive pulmonary disease and a decrease in the number getting common cold and exacerbations; reduction of soluble interleukin‐2 receptor and the serum cortisol concentration of postoperative patients; a reduction of the incidence of inflammatory complications and C‐reactive protein elevation after cerebrovascular disease; a reduction of the volume of steroid and tacrolimus during the treatment of atopic dermatitis; a healing effect for intractable chronic wounds; improvement of the physical status of elderly weak patients; and improvement of the fatigue level of cancer patients. Conclusion CODIV‐19 is characterized by high risk for the aged and people with other disease complications, cytokine hyperactivity in the severe stage, and sequelae in the recovery stage. Considering the immune‐stimulative/modulative effects of HET on inflammatory conditions and against exhaustion and frailty, it may be useful for prevention, treatment, and recovery from COVID‐19.
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Affiliation(s)
- Shin Takayama
- Department of Kampo Medicine Tohoku University Hospital Sendai Japan
- Department of Education and Support for Regional Medicine Tohoku University Hospital Sendai Japan
- Department of Kampo and Integrative Medicine Tohoku University Graduate School of Medicine Sendai Japan
| | - Akiko Kikuchi
- Department of Kampo Medicine Tohoku University Hospital Sendai Japan
- Department of Education and Support for Regional Medicine Tohoku University Hospital Sendai Japan
- Department of Kampo and Integrative Medicine Tohoku University Graduate School of Medicine Sendai Japan
| | - Toshiaki Makino
- Department of Pharmacognosy Graduate School of Pharmaceutical Sciences, Nagoya City University Nagoya Japan
| | - Mosaburo Kainuma
- Community Medicine Education Unit Graduate School of Medical Science, Kyushu University Fukuoka Japan
| | - Takao Namiki
- Department of Japanese‐Oriental (Kampo) Medicine Graduate School of Medicine, Chiba University Chiba Japan
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Du HX, Zhou HF, Yang JH, Lu YY, He Y, Wan HT. Preliminary study of Yinhuapinggan granule against H1N1 influenza virus infection in mice through inhibition of apoptosis. PHARMACEUTICAL BIOLOGY 2020; 58:979-991. [PMID: 32962483 PMCID: PMC7534346 DOI: 10.1080/13880209.2020.1818792] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 08/09/2020] [Accepted: 08/30/2020] [Indexed: 06/11/2023]
Abstract
CONTEXT Yinhuapinggan granule (YHPG) is frequently used for treating fever, cough, and viral pneumonia in traditional Chinese medicine. OBJECTIVE This study investigated the antiviral effects of YHPG in H1N1 influenza virus (IFV)-infected mice and its possible mechanism. MATERIALS AND METHODS ICR mice were intranasally infected with 10 LD50 viral dose of IFV and then oral administration of YHPG (6, 12, and 18 g/kg) or oseltamivir (positive control) once a day for 2 or 4 consecutive days, six mice in each group. The lung, spleen and thymus indexes of IFV-infected mice, the expression of viral loads and pathological changes in lung tissues were performed to evaluate the antiviral effects of YHPG. Real-time PCR, immunohistochemistry and western blot assays were used to determine the expression of Bax, Bcl-2 and caspase-3. RESULTS LD50 in mice was 10-3.5/0.02 mL. YHPG (6, 12, and 18 g/kg) dose-dependently decreased the lung index and viral load; the inhibition ratio of lung index was 5.31, 18.22, and 34.06%, respectively. Further detection revealed that YHPG (12 and 18 g/kg) significantly attenuated lung pathological changes, and increased the spleen and thymus indexes. Moreover, YHPG significantly down-regulated the mRNA and protein expression of Bax and caspase-3 in lung tissues of mice infected with IFV, and up-regulated the expression of Bcl-2. CONCLUSIONS YHPG has significant antiviral effects in IFV-infected mice, partially by inhibiting influenza virus replication and regulating the occurrence of apoptosis induced by influenza virus infection, suggesting that YHPG may be a promising antiviral agent with potential clinical application prospects.
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Affiliation(s)
- Hai-xia Du
- College of Basic Medical Science, Zhejiang Chinese Medical University, Hangzhou, China
| | - Hui-fen Zhou
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou, China
| | - Jie-hong Yang
- College of Basic Medical Science, Zhejiang Chinese Medical University, Hangzhou, China
| | - Yi-yu Lu
- Institute of Microbiology, Zhejiang Center for Disease Control and Prevention, Hangzhou, China
| | - Yu He
- College of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou, China
| | - Hai-tong Wan
- College of Basic Medical Science, Zhejiang Chinese Medical University, Hangzhou, China
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou, China
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Nakakubo S, Kimura S, Mimura K, Kajiwara C, Ishii Y, Konno S, Tateda K. Traditional Japanese Herbal Medicine Hochu-Ekki-to Promotes Pneumococcal Colonization Clearance via Macrophage Activation and Interleukin 17A Production in Mice. Front Cell Infect Microbiol 2020; 10:569158. [PMID: 33194807 PMCID: PMC7649813 DOI: 10.3389/fcimb.2020.569158] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 09/22/2020] [Indexed: 12/15/2022] Open
Abstract
Streptococcus pneumoniae may colonize the nasopharynx, and as pneumococcal colonization causes invasive diseases and the subsequent transmission, reducing bacterial burden in the nasal cavity is critical. Hochu-ekki-to (TJ-41) is a traditional Japanese herbal medicine that exerts immunomodulatory effects in host cells. In this study, we investigated the potency of TJ-41 in modulating pneumococcal colonization clearance by activating host immunity. Mice, intranasally inoculated with pneumococci, were treated orally with TJ-41. During colonization, TJ-41 treatment significantly reduced pneumococcal burden and increased macrophage population in the nasopharynx. Furthermore, interleukin 17A production was significantly enhanced after TJ-41 treatment. In vitro experiment using nasal-derived cells revealed that pneumococcal antigen exposure upregulated the transcription of interleukin 17A in the TJ-41-treated group compared with that in the control group. Macrophages activated by killed bacteria were significantly increased in the presence of TJ-41 in an interleukin 17A-dependent manner. Moreover, TJ-41 enhanced phagocytosis, inhibited bacterial growth, and improved the antigen-presenting capacity of macrophages. Our results demonstrate that TJ-41 accelerates the clearance of pneumococcal nasopharyngeal colonization via macrophage activation. Subsequent production of interleukin 17A provides an additional benefit to effector cells.
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Affiliation(s)
- Sho Nakakubo
- Department of Microbiology and Infectious Diseases, Faculty of Medicine, Toho University Graduate School of Medicine, Tokyo, Japan.,Department of Respiratory Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Hokkaido, Japan
| | - Soichiro Kimura
- Department of Microbiology and Infectious Diseases, Faculty of Medicine, Toho University Graduate School of Medicine, Tokyo, Japan
| | - Kazuyuki Mimura
- Department of Microbiology and Infectious Diseases, Faculty of Medicine, Toho University Graduate School of Medicine, Tokyo, Japan
| | - Chiaki Kajiwara
- Department of Microbiology and Infectious Diseases, Faculty of Medicine, Toho University Graduate School of Medicine, Tokyo, Japan
| | - Yoshikazu Ishii
- Department of Microbiology and Infectious Diseases, Faculty of Medicine, Toho University Graduate School of Medicine, Tokyo, Japan
| | - Satoshi Konno
- Department of Respiratory Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Hokkaido, Japan
| | - Kazuhiro Tateda
- Department of Microbiology and Infectious Diseases, Faculty of Medicine, Toho University Graduate School of Medicine, Tokyo, Japan
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Co-Administration of the Traditional Medicines Hachimi-Jio-Gan and Hochu-Ekki-To Can Reverse Busulfan-Induced Aspermatogenesis. Int J Mol Sci 2020; 21:ijms21051716. [PMID: 32138301 PMCID: PMC7084192 DOI: 10.3390/ijms21051716] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 02/28/2020] [Accepted: 03/02/2020] [Indexed: 01/19/2023] Open
Abstract
Busulfan is used as a chemotherapeutic drug to treat childhood and adult chronic myelogenous leukemia, and as an immunosuppressive agent before bone marrow transplantation. A key side effect of busulfan is the alteration of male reproductive function. Infertility caused by anti-cancer treatments has become a significant concern, but there are currently limited treatments for this condition. Recently, we demonstrated that Gosha-jinki-gan, a traditional Japanese medicine, completely reversed the spermatogenesis defects caused by cancer treatment in mice. Hochu-ekki-to and Hachimi-jio-gan are commonly used to treat male infertility, and Hachimi-jio-gan shares herbal ingredients with Gosha-jinki-gan. Therefore, in the present study, we administered Hachimi-jio-gan and Hochu-ekki-to alone or in combination to mice with severe aspermatogenesis caused by busulfan treatment. We performed testis weight measurements, quantitative histological assessments of the testes and the epididymis, and evaluated sperm counts and morphology. We also assessed the expression of immune mediators and macrophage markers. Treatment with a combination of both the medicines significantly reduced busulfan-induced testicular toxicity when compared to the lone treatment with either medicine. We demonstrated that treatment efficacy was related to a differential impact on testicular inflammation, and that the synergistic effect of co-administration completely reversed the busulfan-induced damage to the reproductive functions.
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He Q, Sawada M, Yamasaki N, Akazawa S, Furuta H, Uenishi H, Meng X, Nakahashi T, Ishigaki Y, Moriya J. Neuroinflammation, Oxidative Stress, and Neurogenesis in a Mouse Model of Chronic Fatigue Syndrome, and the Treatment with Kampo Medicine. Biol Pharm Bull 2020; 43:110-115. [PMID: 31902915 DOI: 10.1248/bpb.b19-00616] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The diagnosis of chronic fatigue syndrome (CFS) is mainly symptom-based, and the etiology is still unclear. Here, we evaluated the pathological changes in the brain of a mouse model of CFS and studied the effects of Kampo medicine. A mouse model of CFS was established through six repeated injections of Brucella abortus (BA) every two weeks for a period of 12 weeks. Neuroinflammation was measured by estimating interleukin (IL)-1β, IL-6, and interferon-gamma (IFN-γ), and oxidative stress by nitrotyrosine (3-NT) and 4-hydroxynonenal (4-HNE) 6 weeks after the last injection. Hippocampal neurogenesis was evaluated through Ki-67, doublecortin (DCX), and 5-bromodeoxyuridine (BrdU) assays. The effects of Kampo medicines (Hochuekkito (TJ-41) and Hachimijiogan (TJ-7)) on neuroinflammation during CFS were studied. The wheel-running activity of mice was decreased by about 50% compared to baseline at 6 weeks after the last BA injection. The levels of IL-1β, IL-6, 3-NT, and 4-HNE were increased in both the cortex and the hippocampus of CFS mice at 6 weeks after the last BA injection. Hippocampal neurogenesis was unchanged in CFS mice. Treatment with TJ-41 and TJ-7 reduced the expressions of IL-1β, IL-6, and IFN-γ in the hippocampus but not in the cortex. The results of the present study indicate that neuroinflammation and oxidative stress play important roles in the pathogenesis of CFS. The data further suggest that treatment with TJ-41 and TJ-7 could help reduce the inflammation associated with CFS in the hippocampus, but failed to improve the symptoms in CFS mice.
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Affiliation(s)
- Qiang He
- Department of General Internal Medicine, Kanazawa Medical University
| | - Mio Sawada
- Department of General Internal Medicine, Kanazawa Medical University
| | - Naruhiro Yamasaki
- Department of General Internal Medicine, Kanazawa Medical University
| | - Sumiyo Akazawa
- Department of General Internal Medicine, Kanazawa Medical University
| | - Hisakazu Furuta
- Department of General Internal Medicine, Kanazawa Medical University
| | - Hiroaki Uenishi
- Department of General Internal Medicine, Kanazawa Medical University
| | - Xiangjin Meng
- Department of General Internal Medicine, Kanazawa Medical University
| | - Takeshi Nakahashi
- Department of General Internal Medicine, Kanazawa Medical University
| | | | - Junji Moriya
- Department of General Internal Medicine, Kanazawa Medical University
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Cai M, Yang EJ. Hochu-Ekki-To Improves Motor Function in an Amyotrophic Lateral Sclerosis Animal Model. Nutrients 2019; 11:nu11112644. [PMID: 31689925 PMCID: PMC6893748 DOI: 10.3390/nu11112644] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 10/30/2019] [Accepted: 10/31/2019] [Indexed: 12/12/2022] Open
Abstract
Hochu-ekki-to (Bojungikgi-Tang (BJIGT) in Korea; Bu-Zhong-Yi-Qi Tang in Chinese), a traditional herbal prescription, has been widely used in Asia. Hochu-ekki-to (HET) is used to enhance the immune system in respiratory disorders, improve the nutritional status associated with chronic diseases, enhance the mucosal immune system, and improve learning and memory. Amyotrophic lateral sclerosis (ALS) is pathologically characterized by motor neuron cell death and muscle paralysis, and is an adult-onset motor neuron disease. Several pathological mechanisms of ALS have been reported by clinical and in vitro/in vivo studies using ALS models. However, the underlying mechanisms remain elusive, and the critical pathological target needs to be identified before effective drugs can be developed for patients with ALS. Since ALS is a disease involving both motor neuron death and skeletal muscle paralysis, suitable therapy with optimal treatment effects would involve a motor neuron target combined with a skeletal muscle target. Herbal medicine is effective for complex diseases because it consists of multiple components for multiple targets. Therefore, we investigated the effect of the herbal medicine HET on motor function and survival in hSOD1G93A transgenic mice. HET was orally administered once a day for 6 weeks from the age of 2 months (the pre-symptomatic stage) of hSOD1G93A transgenic mice. We used the rota-rod test and foot printing test to examine motor activity, and Western blotting and H&E staining for evaluation of the effects of HET in the gastrocnemius muscle and lumbar (L4–5) spinal cord of mice. We found that HET treatment dramatically inhibited inflammation and oxidative stress both in the spinal cord and gastrocnemius of hSOD1G93A transgenic mice. Furthermore, HET treatment improved motor function and extended the survival of hSOD1G93A transgenic mice. Our findings suggest that HET treatment may modulate the immune reaction in muscles and neurons to delay disease progression in a model of ALS.
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Affiliation(s)
- Mudan Cai
- Department of Herbal medicine Research, Korea Institute of Oriental Medicine, 1672 Yuseong-daero, Yuseong-gu, Daejeon 305-811, Korea.
| | - Eun Jin Yang
- Department of Clinical Research, Korea Institute of Oriental Medicine, 1672 Yuseong-daero, Yuseong-gu, Daejeon 305-811, Korea.
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Jeong MK, Kim YE, Kim A, Jung J, Son MJ. The herbal drug, Bu-Zhong-Yi-Qi-Tang, for the treatment of atopic dermatitis: Protocol for a systematic review. Medicine (Baltimore) 2019; 98:e13938. [PMID: 30608425 PMCID: PMC6344144 DOI: 10.1097/md.0000000000013938] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
INTRODUCTION Bu-Zhong-Yi-Qi-Tang (BZYQT) is an herbal drug that is widely used to treat various diseases, including gastrointestinal diseases, allergic rhinitis, and atopic dermatitis (AD) in East Asian countries. BZYQT has been shown to have anti-allergic, anti-inflammatory, and immunoregulatory properties in experimental studies, and there is substantial clinical evidence of its effect on AD. This review will systematically assess the evidence of BZYQT for the treatment of AD. METHODS/DESIGN Eleven databases will be searched from their inception without language restriction. Randomized controlled trials that examined BZYQT or modified BZYQT for AD will be included. The selection of the studies, data abstraction, and validations will be performed independently by 2 researchers. The methodological qualities of the randomized controlled trials will be assessed using the Cochrane Collaboration tool for assessing the risk of bias. ETHICS AND DISSEMINATION This systematic review will be published in a peer-reviewed journal and will also be disseminated electronically or in print. It will be useful to inform and guide healthcare practitioners. TRIAL REGISTER NUMBER CRD42018105173.
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Affiliation(s)
| | - Young-Eun Kim
- Future Medicine Division, Korea Institute of Oriental Medicine, Yuseongdae-ro, Yuseong-gu, Daejeon, Republic of Korea
| | - Anna Kim
- Future Medicine Division, Korea Institute of Oriental Medicine, Yuseongdae-ro, Yuseong-gu, Daejeon, Republic of Korea
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11
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Minami M, Konishi T, Makino T. Effect of Hochuekkito (Buzhongyiqitang) on Nasal Cavity Colonization of Methicillin-Resistant Staphylococcus aureus in Murine Model. MEDICINES 2018; 5:medicines5030083. [PMID: 30071688 PMCID: PMC6163422 DOI: 10.3390/medicines5030083] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 07/24/2018] [Accepted: 07/25/2018] [Indexed: 11/16/2022]
Abstract
Background: Methicillin-resistant Staphylococcus aureus (MRSA) infections are largely preceded by colonization with MRSA. Hochuekkito is the formula composing 10 herbal medicines in traditional Kampo medicine to treat infirmity and to stimulate immune functions. We evaluated the efficacy of hochuekkito extract (HET) against MRSA colonization using a nasal infection murine model. Methods: We evaluated the effects of HET as follows: (1) the growth inhibition by measuring turbidity of bacterial culture in vitro, (2) the nasal colonization of MRSA by measuring bacterial counts, and (3) the splenocyte proliferation in mice orally treated with HET by the 3H-thymidine uptake assay. Results: HET significant inhibited the growth of MRSA. The colony forming unit (CFU) in the nasal fluid of HET-treated mice was significantly lower than that of HET-untreated mice. When each single crude drug—Astragali radix, Bupleuri radix, Zingiberis rhizoma, and Cimicifugae rhizome—was removed from hochuekkito formula, the effect of the formula significantly weakened. The uptake of 3H-thymidine into murine splenocytes treated with HET was significantly higher than that from untreated mice. The effects of the modified formula described above were also significantly weaker than those of the original formula. Conclusions: Hochuekkito is effective for the treatment of MRSA nasal colonization in the murine model. We suggest HET as the therapeutic candidate for effective therapy on nasal cavity colonization of MRSA in humans.
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Affiliation(s)
- Masaaki Minami
- Department of Bacteriology, Graduate School of Medical Sciences, Nagoya City University, 1 Kawasumi, Mizuho-ku, Nagoya 467-8601, Japan.
| | - Toru Konishi
- Department of Pharmacognosy, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-Dori, Mizuho-ku, Nagoya 467-8603, Japan.
| | - Toshiaki Makino
- Department of Pharmacognosy, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-Dori, Mizuho-ku, Nagoya 467-8603, Japan.
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Du HX, Zhou HF, Wan HF, Yang JH, Lu YY, He Y, Wan HT. Antiviral effects and mechanisms of Yinhuapinggan granule against H1N1 influenza virus infection in RAW264.7 cells. Inflammopharmacology 2018; 26:1455-1467. [PMID: 29502306 DOI: 10.1007/s10787-018-0457-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Accepted: 02/13/2018] [Indexed: 01/08/2023]
Abstract
Yinhuapinggan granule (YHPG), a modified prescription based on Ma-Huang-Tang (MHT), is used in traditional Chinese medicine (TCM) to treat influenza, cough, and viral pneumonia. In this study, we investigated the antiviral effects of YHPG by means of pre-, post-, and co-treatment, and its underlying mechanisms on regulating the levels of inflammatory-related cytokines, modulating the mRNA expressions of interferon-stimulated genes in influenza virus-infected murine macrophage cells (RAW264.7), and evaluating the protein expressions of key effectors in the Type I IFN and pattern recognition receptor (PRRs) signaling pathways. The results showed that YHPG markedly inhibited influenza virus (IFV) replication in pre-, post- and co-treatment assay, especially in post-treatment assay. Antiviral mechanisms studies revealed that YHPG (500 and 250 μg/mL) significantly up-regulated levels of IFN-β, IFN-stimulated genes (Mx-1, ISG-15 and ISG-56) compared with the IFV control group, while the levels of IL-6 and TNF-α were significantly down-regulated. Furthermore, western blot analysis results revealed that the protein expressions of the phosphorylated forms of TBK1, IRF3, ERK1/2, P38 MAPK and NF-κB p65 were significantly down-regulated in RAW264.7 cells with the YHPG (500 and 250 μg/mL) treatment, while the expression of the phosphorylated form of STAT1 was significantly enhanced. Based on these results, YHPG had antiviral effects in IFV-infected RAW264.7 cells, which might be associated with regulation of the inflammatory cytokines production, evaluation of the levels of IFN-stimulated genes, and modulation of the protein expressions of key effectors in the Type I IFN and PRRs signaling pathways.
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Affiliation(s)
- Hai-Xia Du
- Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Hui-Fen Zhou
- Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Hao-Fang Wan
- Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Jie-Hong Yang
- Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Yi-Yu Lu
- Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, 310009, China
| | - Yu He
- College of Pharmaceutical Science, Zhejiang Chinese Medical University, 548 Binwen Road, Hangzhou, China.
| | - Hai-Tong Wan
- College of Pharmaceutical Science, Zhejiang Chinese Medical University, 548 Binwen Road, Hangzhou, China. .,Institute of Cardio-Cerebrovascular Diseases, Zhejiang Chinese Medical University, 548 Binwen Road, Hangzhou, China.
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A 4-Week Repeated-Dose Oral Toxicity Study of Bojungikgi-Tang in Crl:CD Sprague Dawley Rats. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2018; 2017:4748904. [PMID: 29387129 PMCID: PMC5745664 DOI: 10.1155/2017/4748904] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Accepted: 11/26/2017] [Indexed: 11/17/2022]
Abstract
Traditional herbal medicines have been used for centuries in Asian countries. However, recent studies have led to increasing concerns about the safety and toxicity of herbal prescriptions. Bojungikgi-tang (BJIGT), a herbal decoction, has been used in Korea to improve physical strength. To establish the safety information, BJIGT water extract was evaluated in a 4-week repeated-dose oral toxicity test in Crl:CD Sprague Dawley rats. BJIGT was orally administered in daily doses of 0, 500, 1000, and 2000 mg/kg/day for 4 weeks via oral gavage in male and female rats. We examined the mortality, clinical signs, body weight change, food intake, organ weights, hematology, serum biochemistry, and urinalysis parameters. No significant changes were observed in mortality, clinical sings, body weight, food intake, organ weights, hematology, serum biochemistry, and urinalysis parameters between the control group and the BJIGT-treated groups in the rats of both sexes. The results indicate that BJIGT did not induce toxic effects at a dose level up to 2000 mg/kg in rats. Thus, this concentration is considered the nonobservable effect dose in rats and is appropriate for a 13-week subchronic toxicity study.
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Herbal Formula Modified Buzhong-Yiqi-Tang for Functional Constipation in Adults: A Meta-Analysis of Randomized Controlled Trials. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2018; 2018:9602525. [PMID: 29552087 PMCID: PMC5820555 DOI: 10.1155/2018/9602525] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 11/09/2017] [Accepted: 12/11/2017] [Indexed: 02/05/2023]
Abstract
Background Herbal formula Modified Buzhong-Yiqi-Tang (MBYT) has been widely used for the treatment of functional constipation in East Asia, but its efficacy and safety are unclear. Methods The study was to evaluate the efficacy and safety of MBYT for adult patients with functional constipation. Randomized clinical trials were selected according to predefined inclusion and exclusion criteria. Results In total, twenty-five randomized controlled clinical trials were included with 2089 patients. There was evidence that MBYT treatment significantly improved the symptoms of functional constipation compared with stimulant laxatives, osmotic laxatives, and prokinetic agents. Our results also demonstrated that, when used as an adjuvant therapy, MBYT significantly improved the symptoms of functional constipation, when compared with osmotic laxatives alone, prokinetic agents alone, and biofeedback alone. Moreover, patients taking MBYT experienced fewer adverse events compared to the control groups. Conclusion This review suggests that MBYT appears to have excellent therapeutic effect on adult patients with functional constipation and no serious side effects were identified. However, due to overall limited quality, the therapeutic benefit of MBYT may be substantiated to a limited degree. Better methodological quality and large controlled trials are expected to further quantify the therapeutic effect of MBYT.
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Dan K, Takanashi K, Akiyoshi H, Munakata K, Hasegawa H, Ogawa K, Watanabe K. Mechanism of Action of the Anti-Influenza Virus Active Kampo (Traditional Japanese Herbal) Medicine, Hochuekkito. Pharmacology 2017; 101:148-155. [PMID: 29275416 DOI: 10.1159/000485628] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Accepted: 11/23/2017] [Indexed: 11/19/2022]
Abstract
When the Kampo medicine, Hochuekkito (Hochu), was administered to normal mice for 2 weeks, influenza virus titer was reduced. The mechanism of action of Hochu was examined using the plaque assay method. It was suggested that Hochu may either obstruct the first stage of the infection process (adsorption and entry) or may directly target viral particles. Using the plaque assay method, these 2 modes of action could not be differentiated. Virus RNA in the infected cell was verified by quantitative real-time polymerase chain reaction. An equal inhibition effect was obtained when Hochu was preprocessed for normal cells and when they were made to act simultaneously with virus adsorption. The viral load at the cell surface following UV irradiation was higher in the Hochu-administered group as compared with that of the control. Moreover, the affinity of Hochu for the influenza virus was hundred times higher than its affinity for the host cell. The effect of entry obstruction by Hochu was observed via image analysis, where the amount of virus nucleocapsid protein (NP) invading the cell was visualized with FITC-labeled NP antibody. Hochu does not seem to have an effect on nucleic acid synthesis, viral release from infected cells, and on the subsequent second round of infection. In conclusion, Hochu binds to viral particles and forms complexes that can obstruct the entry of influenza virus into cells.
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Affiliation(s)
- Katsuaki Dan
- Division of Research and Development, Research Organization of Bioactivity, Tokyo, Japan
| | - Keita Takanashi
- Otorhinolaryngology, Head and Neck Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Hiroko Akiyoshi
- Center for Kampo Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Kaori Munakata
- East-West Life Science Innovation Laboratory, Keio University, Tokyo, Japan
| | - Hideki Hasegawa
- Pathology, National Institute of Infectious Diseases, Tokyo, Japan
| | - Kaoru Ogawa
- Otorhinolaryngology, Head and Neck Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Kenji Watanabe
- Center for Kampo Medicine, Keio University School of Medicine, Tokyo, Japan.,East-West Life Science Innovation Laboratory, Keio University, Tokyo, Japan.,Faculty of Environmental and Information Study, Keio University, Tokyo, Japan
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Maoto, a Traditional Japanese Herbal Medicine, Inhibits Uncoating of Influenza Virus. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2017; 2017:1062065. [PMID: 28904550 PMCID: PMC5585631 DOI: 10.1155/2017/1062065] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Accepted: 07/20/2017] [Indexed: 11/17/2022]
Abstract
We previously reported in randomized controlled trials that maoto, a traditional herbal medicine, showed clinical and virological efficacy for seasonal influenza. In this study, a culturing system for influenza was used to test the effect of maoto. A549 cells in the culture were infected with influenza virus A (PR8) and followed after treatment with maoto; the virus titers in the culture supernatant, intracellular viral proteins, and viral RNA were determined. When infected cells were cultured with maoto for 24 hr, the virus titer and protein were significantly reduced compared with medium only. Other subtypes, A/H3N2, H1N1pdm, and B, were also inhibited by maoto. Proliferation of viral RNA in a 6 hr culture was inhibited by maoto in the early phase, especially in the first 30 min. Focusing on the entry step of the influenza virus, we found that endosomal pH, regulated by vacuolar-type H+ ATPase (V-ATPase) located in the membrane, was increased when treated with maoto. We also found that uncoating of influenza viruses was also inhibited by maoto, resulting in the increase of the number of virus particles in endosomes. These results strongly suggest that the inhibition of endosomal acidification by maoto results in blocking influenza virus entry to cytoplasm, probably through the inhibition of V-ATPase. The present study provides evidence that supports the clinical use of maoto for the treatment of influenza.
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Takanashi K, Dan K, Kanzaki S, Hasegawa H, Watanabe K, Ogawa K. Hochuekkito, a Japanese Herbal Medicine, Restores Metabolic Homeostasis between Mitochondrial and Glycolytic Pathways Impaired by Influenza A Virus Infection. Pharmacology 2017; 99:240-249. [PMID: 28147362 DOI: 10.1159/000455918] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Accepted: 01/09/2017] [Indexed: 11/19/2022]
Abstract
BACKGROUND Hochuekkito (HKT), a traditional Japanese herbal medicine (Kampo), has been used to treat symptoms of several diseases. In a recent clinical study, HKT was shown to be protective against the influenza virus infection. However, the underlying mechanism of the prophylactic effect is not clear. Mitochondrial and glycolytic pathways play important roles in cellular energy metabolism to maintain biological functions. These metabolic pathways are affected by the influenza virus infection. In this study, we examined the relationship between the preventive effects of HKT against the influenza virus infection and cellular energy metabolism in mitochondria and glycolysis using Madin-Darby canine kidney cells and influenza A/PR/8/34 (H1N1) virus (IAV). METHODS Mitochondrial and glycolytic metabolic pathways were evaluated on the basis of the oxygen consumption rate (OCR) and extracellular acidification rate (ECAR), respectively, using the XF24 Extracellular Analyzer. RESULTS The OCR/ECAR ratio in IAV-infected cells was lower than that in control cells. Cells that were treated with HKT before IAV infection showed a metabolic pattern similar to that in the control cells (increase in both OCR and ECAR). CONCLUSIONS Our results suggest that HKT not only activates both mitochondrial and glycolytic energy metabolism in IAV-infected cells but also helps maintain metabolic homeostasis similar to that in noninfected cells.
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Affiliation(s)
- Keita Takanashi
- Department of Otorhinolaryngology, Head and Neck Surgery, Keio University School of Medicine, Tokyo, Japan
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Kampo Medicines for Infectious Diseases. JAPANESE KAMPO MEDICINES FOR THE TREATMENT OF COMMON DISEASES: FOCUS ON INFLAMMATION 2017. [PMCID: PMC7150106 DOI: 10.1016/b978-0-12-809398-6.00014-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Numerous Kampo medicines and Oriental herbs have been used for the treatment of infectious diseases for several reasons, such as genetic background, economical reasons, fewer adverse effects, and so on. This chapter describes Kampo medicines and related Oriental herbs that are effective or promising in the treatment of infectious diseases at the clinical level and/or in animal models. In addition, effective Kampo medicines tested in vitro in cultured-cell studies are also included in this chapter. Each section is categorized by infectious disease and according to the popularity of the Kampo medicine.
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Amitani M, Amitani H, Sloan RA, Suzuki H, Sameshima N, Asakawa A, Nerome Y, Owaki T, Inui A, Hoshino E. The translational aspect of complementary and alternative medicine for cancer with particular emphasis on Kampo. Front Pharmacol 2015; 6:150. [PMID: 26300773 PMCID: PMC4527580 DOI: 10.3389/fphar.2015.00150] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Accepted: 07/09/2015] [Indexed: 12/17/2022] Open
Abstract
Complementary and alternative medicine (CAM) including Japanese Kampo is known to have anticancer potential. An increasing number of cancer survivors are using CAM for disease prevention, immune system enhancement, and symptom control. Although there have been abundant previous clinical reports regarding CAM, scientific investigations aimed at acquiring quantifiable results in clinical trials, as well as basic research regarding CAM, have only recently been undertaken. Recent studies suggest that CAM enhancement of immune function is related to cytokines. This review provides a translational aspect of CAM, particularly Hozai in Kampo from both scientific and clinical points of view for further development of CAM for cancer treatment.
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Affiliation(s)
- Marie Amitani
- Education Center for Doctors in Remote Islands and Rural Areas, Kagoshima University Graduate School of Medical and Dental Sciences Kagoshima, Japan ; Department of Psychosomatic Internal Medicine, Kagoshima University Graduate School of Medical and Dental Sciences Kagoshima, Japan
| | - Haruka Amitani
- Department of Psychosomatic Internal Medicine, Kagoshima University Graduate School of Medical and Dental Sciences Kagoshima, Japan
| | - Robert A Sloan
- Department of Psychosomatic Internal Medicine, Kagoshima University Graduate School of Medical and Dental Sciences Kagoshima, Japan
| | - Hajime Suzuki
- Department of Psychosomatic Internal Medicine, Kagoshima University Graduate School of Medical and Dental Sciences Kagoshima, Japan
| | - Nanami Sameshima
- Department of Psychosomatic Internal Medicine, Kagoshima University Graduate School of Medical and Dental Sciences Kagoshima, Japan
| | - Akihiro Asakawa
- Department of Psychosomatic Internal Medicine, Kagoshima University Graduate School of Medical and Dental Sciences Kagoshima, Japan
| | - Yasuhito Nerome
- Education Center for Doctors in Remote Islands and Rural Areas, Kagoshima University Graduate School of Medical and Dental Sciences Kagoshima, Japan
| | - Tetsuhiro Owaki
- Education Center for Doctors in Remote Islands and Rural Areas, Kagoshima University Graduate School of Medical and Dental Sciences Kagoshima, Japan
| | - Akio Inui
- Department of Psychosomatic Internal Medicine, Kagoshima University Graduate School of Medical and Dental Sciences Kagoshima, Japan
| | - Etsuo Hoshino
- Division of Kampo Support, Cancer Institute Hospital Tokyo, Japan
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Anti-influenza (H1N1) potential of leaf and stem bark extracts of selected medicinal plants of South India. Saudi J Biol Sci 2015; 22:532-8. [PMID: 26288555 PMCID: PMC4537874 DOI: 10.1016/j.sjbs.2015.01.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Revised: 01/09/2015] [Accepted: 01/12/2015] [Indexed: 01/12/2023] Open
Abstract
Variations in antioxidant and anti-viral activities (against Influenza AP/R/8 (H1N1) virus) between the leaves and stem bark of selected medicinal plants were studied. Malin Darby canine kidney (MDCK) cells were used for the viral infection and the antiviral activity of the extracts was studied using sulphorhodamine B (SRB) assay. The stem bark of the plants including Strychnos minor, Diotacanthus albiflorus, Strychnos nux-vomica and Chloroxylon swietenia showed higher flavonoid contents as well as 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) scavenging activity when compared with their leaves. In case of 1,1-diphenyl-2-picrylhydrazyl (DPPH) activity, the stem bark of S. nux-vomica and leaf extract of C. swietenia showed the highest activity. Based on the IC50 values, the stem bark extracts of Cayratia pedata (20.5 μg/mL) and S. minor (22.4 μg/mL) showed high antiviral activity. In the mean-time S. nux-vomica, C. swietenia and C. swietenia bark extracts showed cytotoxicity to the MDCK cells. When comparing the stem bark and leaves the content of gallic acid, ferulic acid, o-coumaric acid, total flavonoids (TFC) and total phenols (TPC) was higher in stem bark and hence their anti-viral activity was high. Further study based on the metabolites against H1N1 can reveal the potential of therapeutic compounds against the viral disease.
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Screening of ethnic medicinal plants of South India against influenza (H1N1) and their antioxidant activity. Saudi J Biol Sci 2014; 22:191-7. [PMID: 25737652 DOI: 10.1016/j.sjbs.2014.09.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2014] [Revised: 09/17/2014] [Accepted: 09/17/2014] [Indexed: 12/13/2022] Open
Abstract
Antiviral activity against H1N1 influenza was studied using ethnic medicinal plants of South India. Results revealed that Wrightia tinctoria (2.25 μg/ml) was one of the best antidotes against H1N1 virus in terms of inhibitory concentration of 50% (IC50) whereas the control drug Oseltamivir showed 6.44 μg/ml. Strychnos minor, Diotacanthus albiflorus and Cayratia pedata showed low cytotoxicity (>100) to the MDCK (Malin darby canine kidney) cells by cytotoxicity concentration of 50% (CC50) and possessed antiviral activity suggesting that these plants can be used as herbal capsules for H1N1 virus. W. tinctoria and S. minor showed high therapeutic indexes (TI) such as 12.67 and 21.97 suggesting that those plants can be used for anti-viral drug development. The CC50 values of Eugenia singampattiana (0.3 μg/ml), Vitex altissima (42 μg/ml), Salacia oblonga (7.32 μg/ml) and Salacia reticulata (7.36 μg/ml) resulted in cytotoxicity of the MDCK cells, due to their high phenolic content. Findings from this study state that the plant W. tinctoria can be a potent source for third generation anti-viral drug development against H1N1.
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Rajasekaran D, Palombo EA, Chia Yeo T, Lim Siok Ley D, Lee Tu C, Malherbe F, Grollo L. Identification of traditional medicinal plant extracts with novel anti-influenza activity. PLoS One 2013; 8:e79293. [PMID: 24312177 PMCID: PMC3842314 DOI: 10.1371/journal.pone.0079293] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2013] [Accepted: 09/16/2013] [Indexed: 11/18/2022] Open
Abstract
The emergence of drug resistant variants of the influenza virus has led to a need to identify novel and effective antiviral agents. As an alternative to synthetic drugs, the consolidation of empirical knowledge with ethnopharmacological evidence of medicinal plants offers a novel platform for the development of antiviral drugs. The aim of this study was to identify plant extracts with proven activity against the influenza virus. Extracts of fifty medicinal plants, originating from the tropical rainforests of Borneo used as herbal medicines by traditional healers to treat flu-like symptoms, were tested against the H1N1 and H3N1 subtypes of the virus. In the initial phase, in vitro micro-inhibition assays along with cytotoxicity screening were performed on MDCK cells. Most plant extracts were found to be minimally cytotoxic, indicating that the compounds linked to an ethnomedical framework were relatively innocuous, and eleven crude extracts exhibited viral inhibition against both the strains. All extracts inhibited the enzymatic activity of viral neuraminidase and four extracts were also shown to act through the hemagglutination inhibition (HI) pathway. Moreover, the samples that acted through both HI and neuraminidase inhibition (NI) evidenced more than 90% reduction in virus adsorption and penetration, thereby indicating potent action in the early stages of viral replication. Concurrent studies involving Receptor Destroying Enzyme treatments of HI extracts indicated the presence of sialic acid-like component(s) that could be responsible for hemagglutination inhibition. The manifestation of both modes of viral inhibition in a single extract suggests that there may be a synergistic effect implicating more than one active component. Overall, our results provide substantive support for the use of Borneo traditional plants as promising sources of novel anti-influenza drug candidates. Furthermore, the pathways involving inhibition of hemagglutination could be a solution to the global occurrence of viral strains resistant to neuraminidase drugs.
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Affiliation(s)
- Dhivya Rajasekaran
- Environment and Biotechnology Centre, Faculty of Life and Social sciences, Swinburne University of Technology, Hawthorn VIC, Australia
| | - Enzo A. Palombo
- Environment and Biotechnology Centre, Faculty of Life and Social sciences, Swinburne University of Technology, Hawthorn VIC, Australia
| | | | | | - Chu Lee Tu
- Sarawak Biodiversity Centre, Kuching, Sarawak, Malaysia
| | - Francois Malherbe
- Environment and Biotechnology Centre, Faculty of Life and Social sciences, Swinburne University of Technology, Hawthorn VIC, Australia
| | - Lara Grollo
- Environment and Biotechnology Centre, Faculty of Life and Social sciences, Swinburne University of Technology, Hawthorn VIC, Australia
- * E-mail:
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