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Otani N, Tomita K, Kobayashi Y, Kuroda K, Kobayashi H, Kubo T. Hydrogen-Generating Silicon-Based Agent Improves Fat Graft Survival in Rats. Plast Reconstr Surg 2024; 154:90e-99e. [PMID: 37433126 DOI: 10.1097/prs.0000000000010919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/13/2023]
Abstract
BACKGROUND Regulating excessive inflammation and oxidative stress in fat grafting may improve retention rates. Hydrogen effectively combats oxidative stress and inflammation and reportedly inhibits ischemia-reperfusion injury in various organs. However, with conventional methods of hydrogen administration, incorporating hydrogen continuously into the body over a long period of time is difficult. The authors hypothesized that a silicon (Si)-based agent they recently developed would aid in fat grafting, as it can generate large amounts of hydrogen continuously in the body. METHODS Fat grafting was performed on the backs of rats fed either a normal or 1.0 wt% Si-based agent-containing diet. To investigate synergistic effects with adipose-derived stromal cells (ASCs), which improve retention rates of fat grafting, fat grafting with ASCs (1.0 × 10 5 /400 mg fat) was also performed in each rat. Postoperative retention rates of grafted fat over time, inflammatory indices, apoptosis, oxidative stress markers, histologic findings, and expression levels of inflammation-related cytokines and growth factors were compared among the 4 groups. RESULTS Intake of Si-based agent and addition of ASCs significantly reduced inflammatory indices, oxidative stress, and apoptosis of grafted fat, and improved long-term retention rates, histologic measures, and grafted fat quality. Under the experimental conditions, intake of the Si-based agent and addition of ASCs yielded comparable improvements in fat graft retention. Combining the 2 enhanced these effects. CONCLUSIONS Oral administration of a hydrogen-generating Si-based agent may improve grafted fat retention by regulating the inflammatory response and oxidative stress in grafted fat. CLINICAL RELEVANCE STATEMENT This study demonstrates improved grafted fat retention rates using a Si-based agent. This Si-based agent has the potential to expand the range of therapeutic indications of hydrogen-based therapy to conditions for which hydrogen has yet to be found effective, such as fat grafting.
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Affiliation(s)
- Naoya Otani
- From the Department of Plastic Surgery, Osaka University Graduate School of Medicine
| | - Koichi Tomita
- From the Department of Plastic Surgery, Osaka University Graduate School of Medicine
- Department of Plastic and Reconstructive Surgery, Kindai University Faculty of Medicine
| | - Yuki Kobayashi
- Institute of Scientific and Industrial Research, Osaka University
| | - Kazuya Kuroda
- From the Department of Plastic Surgery, Osaka University Graduate School of Medicine
| | - Hikaru Kobayashi
- Institute of Scientific and Industrial Research, Osaka University
| | - Tateki Kubo
- From the Department of Plastic Surgery, Osaka University Graduate School of Medicine
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Koyama Y, Kobayashi Y, Kobayashi H, Shimada S. Diverse Possibilities of Si-Based Agent, a Unique New Antioxidant. Antioxidants (Basel) 2023; 12:antiox12051061. [PMID: 37237927 DOI: 10.3390/antiox12051061] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 04/29/2023] [Accepted: 05/03/2023] [Indexed: 05/28/2023] Open
Abstract
Antioxidant therapy is an effective approach for treating diseases in which oxidative stress is involved in the onset of symptoms. This approach aims to rapidly replenish the antioxidant substances in the body when they are depleted due to excess oxidative stress. Importantly, a supplemented antioxidant must specifically eliminate harmful reactive oxygen species (ROS) without reacting with physiologically beneficial ROS, which are important to the body. In this regard, typically used antioxidant therapies can be effective, but may cause adverse effects due to their lack of specificity. We believe that Si-based agents are epoch-making drugs that can overcome these problems associated with current antioxidative therapy. These agents alleviate the symptoms of oxidative-stress-associated diseases by generating large amounts of the antioxidant hydrogen in the body. Moreover, Si-based agents are expected to be highly effective therapeutic drug candidates because they have anti-inflammatory, anti-apoptotic, and antioxidant effects. In this review, we discuss Si-based agents and their potential future applications in antioxidant therapy. There have been several reports of hydrogen generation from silicon nanoparticles, but unfortunately, none have been approved as pharmaceutical agents. Therefore, we believe that our research into medical applications using Si-based agents is a breakthrough in this research field. The knowledge obtained thus far from animal models of pathology may greatly contribute to the improvement of existing treatment methods and the development of new treatment methods. We hope that this review will further revitalize the research field of antioxidants and lead to the commercialization of Si-based agents.
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Affiliation(s)
- Yoshihisa Koyama
- Department of Neuroscience and Cell Biology, Osaka University Graduate School of Medicine, Suita 565-0871, Japan
- Addiction Research Unit, Osaka Psychiatric Research Center, Osaka Psychiatric Medical Center, Osaka 541-8567, Japan
| | | | | | - Shoichi Shimada
- Department of Neuroscience and Cell Biology, Osaka University Graduate School of Medicine, Suita 565-0871, Japan
- Addiction Research Unit, Osaka Psychiatric Research Center, Osaka Psychiatric Medical Center, Osaka 541-8567, Japan
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Otani N, Tomita K, Kobayashi Y, Kuroda K, Koyama Y, Kobayashi H, Kubo T. Hydrogen-generating Si-based agent protects against skin flap ischemia-reperfusion injury in rats. Sci Rep 2022; 12:6168. [PMID: 35418596 PMCID: PMC9008008 DOI: 10.1038/s41598-022-10228-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Accepted: 04/05/2022] [Indexed: 02/08/2023] Open
Abstract
Hydrogen is effective against ischemia–reperfusion (I/R) injury in skin flaps. However, the difficulty of continuously administering a sufficient amount of hydrogen using conventional methods has been an issue in the clinical application of hydrogen-based therapy. An Si-based agent administered orally was previously shown to continuously generate a large amount of hydrogen in the intestinal environment. In this study, we assessed the effect of the Si-based agent on the inhibition of I/R injury in skin flaps using a rat model. In the I/R groups, the vascular pedicle of the abdominal skin flap was occluded for three hours followed by reperfusion. In the I/R + Si group, the Si-based agent was administered perioperatively. After reperfusion, flap survival rate, blood flow, oxidative stress markers, inflammatory markers/findings, and degree of apoptosis were evaluated. Flap survival rate was significantly higher, and histological inflammation, apoptotic cells, oxidative stress markers, and levels of inflammatory cytokine mRNA and protein expression were significantly lower, in the I/R + Si group compared to the I/R group. The Si-based agent suppressed oxidative stress, apoptosis, and inflammatory reactions resulting from I/R injury, thereby contributing to improvements in skin flap survival.
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Affiliation(s)
- Naoya Otani
- Department of Plastic and Reconstructive Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Koichi Tomita
- Department of Plastic and Reconstructive Surgery, Osaka University Graduate School of Medicine, Osaka, Japan.
| | - Yuki Kobayashi
- Institute of Scientific and Industrial Research, Osaka University, Osaka, Japan
| | - Kazuya Kuroda
- Department of Plastic and Reconstructive Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Yoshihisa Koyama
- Department of Neuroscience and Cell Biology, Osaka University Graduate School of Medicine, Osaka, Japan.,Addiction Research Unit, Development of Novel Diagnosis and Treatment Division, Osaka Psychiatric Research Center, Osaka Psychiatric Medical Center, Osaka Prefectural Hospital Organization, Osaka, Japan
| | - Hikaru Kobayashi
- Institute of Scientific and Industrial Research, Osaka University, Osaka, Japan
| | - Tateki Kubo
- Department of Plastic and Reconstructive Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
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Tanaka Y, Shimizu S, Shirotani M, Yorozu K, Kitamura K, Oehorumu M, Kawai Y, Fukuzawa Y. Nutrition and Cancer Risk from the Viewpoint of the Intestinal Microbiome. Nutrients 2021; 13:nu13103326. [PMID: 34684330 PMCID: PMC8541425 DOI: 10.3390/nu13103326] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 09/08/2021] [Accepted: 09/21/2021] [Indexed: 12/19/2022] Open
Abstract
There are various important factors in reducing the risk of cancer development and progression; these factors may correct an unbalanced intake of nutrients to maintain the living body’s homeostasis, detoxify toxic materials, acting as an external factor, and maintain and strengthen the body’s immune function. In a normal cell environment, nutrients, such as carbohydrates, lipids, proteins, vitamins, and minerals, are properly digested and absorbed into the body, and, as a result, an environment in which cancer can develop and progress is prevented. It is necessary to prevent toxic materials from entering the body and to detoxify poisons in the body. If these processes occur correctly, cells work normally, and genes cannot be damaged. The most important factor in the fight against cancer and prevention of the development and progression of cancer is the immune system. This requires a nutritional state in which the immune system works well, allowing the intestinal microbiome to carry out all of its roles. In order to grow intestinal microbiota, the consumption of prebiotics, such as organic vegetables, fruits, and dietary fiber, and probiotics of effective intestinal microbiota, such as fermented foods and supplements, is required. Symbiosis, in which these organisms work together, is an effective means of reducing the risk of cancer. In addition, fecal microbiota transplantation (FMT) using ultrafine bubble water, produced specially by the Association for Clinical Research of Fecal Microbiota Transplantation Japan, is also useful for improving the nutritional condition and reducing the risk of cancer.
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Affiliation(s)
- Yoshimu Tanaka
- Jinzenkai Tanaka Clinic, 2-3-8, Ikunonishi, Ikuno-ku, Osaka 544-0024, Japan
- The Association for Clinical Research of Fecal Microbiota Transplantation Japan, 2-1-40, Katamachi, Miyakojima-ku, Osaka 534-0025, Japan; (S.S.); (M.S.); (K.Y.); (K.K.); (M.O.); (Y.K.); (Y.F.)
- Correspondence:
| | - Shin Shimizu
- The Association for Clinical Research of Fecal Microbiota Transplantation Japan, 2-1-40, Katamachi, Miyakojima-ku, Osaka 534-0025, Japan; (S.S.); (M.S.); (K.Y.); (K.K.); (M.O.); (Y.K.); (Y.F.)
- Symbiosis Research Institute, 6-7-4-106, Minatojimaminami-machi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Masahiko Shirotani
- The Association for Clinical Research of Fecal Microbiota Transplantation Japan, 2-1-40, Katamachi, Miyakojima-ku, Osaka 534-0025, Japan; (S.S.); (M.S.); (K.Y.); (K.K.); (M.O.); (Y.K.); (Y.F.)
- Luke’s Ashiya Clinic, 8-2, Ohara-cho, Ashiya, Hyogo 659-0092, Japan
| | - Kensho Yorozu
- The Association for Clinical Research of Fecal Microbiota Transplantation Japan, 2-1-40, Katamachi, Miyakojima-ku, Osaka 534-0025, Japan; (S.S.); (M.S.); (K.Y.); (K.K.); (M.O.); (Y.K.); (Y.F.)
- Ishinkai Yorozu Clinic, 1-118-4, Mihagino, Tottori 689-0202, Japan
| | - Kunihiro Kitamura
- The Association for Clinical Research of Fecal Microbiota Transplantation Japan, 2-1-40, Katamachi, Miyakojima-ku, Osaka 534-0025, Japan; (S.S.); (M.S.); (K.Y.); (K.K.); (M.O.); (Y.K.); (Y.F.)
- Kitamura Clinic, 4-3-8, Nishiki-machi, Onojo, Fukuoka 816-0935, Japan
| | - Masayuki Oehorumu
- The Association for Clinical Research of Fecal Microbiota Transplantation Japan, 2-1-40, Katamachi, Miyakojima-ku, Osaka 534-0025, Japan; (S.S.); (M.S.); (K.Y.); (K.K.); (M.O.); (Y.K.); (Y.F.)
- LIFE Clinic Tateshina, 3317-1, Toyohira, Chino, Nagano 391-0213, Japan
| | - Yuichi Kawai
- The Association for Clinical Research of Fecal Microbiota Transplantation Japan, 2-1-40, Katamachi, Miyakojima-ku, Osaka 534-0025, Japan; (S.S.); (M.S.); (K.Y.); (K.K.); (M.O.); (Y.K.); (Y.F.)
- Yuakai Kawai Clinic for Internal Medicine, 3-7-14, Higashi-Nakahama, Joto-ku, Osaka 536-0023, Japan
| | - Yoshitaka Fukuzawa
- The Association for Clinical Research of Fecal Microbiota Transplantation Japan, 2-1-40, Katamachi, Miyakojima-ku, Osaka 534-0025, Japan; (S.S.); (M.S.); (K.Y.); (K.K.); (M.O.); (Y.K.); (Y.F.)
- Aichi Medical Preemptive and Integrative Medicine Center, Aichi Medical University Hospital, Yazakokarimata, Nagakute, Aichi 480-1103, Japan
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