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Sano M, Koseki Y, Shibata K, Fujisawa T, Nobe K. Therapeutic effects of the alkaline extract of leaves of Sasa sp. and elucidation of its mechanism in acute kidney injury. J Pharmacol Sci 2024; 154:148-156. [PMID: 38395515 DOI: 10.1016/j.jphs.2024.01.004] [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: 10/28/2023] [Revised: 01/04/2024] [Accepted: 01/09/2024] [Indexed: 02/25/2024] Open
Abstract
Acute kidney injury (AKI), a common complication in hospitalized patients, is associated with high morbidity and mortality rates. However, there are currently no approved or effective therapeutics for AKI. AKI is primarily caused by ischemia/reperfusion (I/R) injury, with oxidative stress from reactive oxygen species (ROS) being a major contributor. This study aimed to evaluate the efficacy of an alkaline extract of the leaves of Sasa sp. (SE) using mouse renal I/R injury and hypoxia/reoxygenation (H/R) models in NRK-52E cells. Renal function parameters were measured, and histopathological evaluations were performed to assess the efficacy of SE. In addition, to determine the mechanisms underlying the effects of SE on renal I/R injury, its effects on malondialdehyde (MDA) of oxidative stress and interleukin (IL)-6 and IL-1β of inflammatory cytokines were evaluated. SE (0.03, 0.3, and 3 g/kg) improved renal function in a dose-dependent manner. In addition, SE ameliorated tubular injury and, reduced IL-6, IL-1β and MDA. Also, SE ameliorated cell death, ROS production, and inflammatory cytokine production in H/R-exposed NRK-52E cells. SE showed antioxidant and anti-inflammatory activities in the AKI. These results indicate the potential of SE as a medicinal compound for the prevention and treatment of AKI.
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Affiliation(s)
- Mizuki Sano
- Department of Pharmacology, Showa University Graduate School of Pharmacy, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan.
| | - Yutaro Koseki
- Department of Pharmacology, Showa University Graduate School of Pharmacy, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan
| | - Keita Shibata
- Department of Pharmacology, Showa University Graduate School of Pharmacy, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan
| | - Tomohiro Fujisawa
- Daiwa Biological Research Institute Co., Ltd., 3-2-1 Sakado, Takatsu-ku, Kawasaki-shi, Kanagawa, 213-0012, Japan
| | - Koji Nobe
- Department of Pharmacology, Showa University Graduate School of Pharmacy, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan; Pharmacological Research Center, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan
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Cellular Anti-Inflammatory and Antioxidant Activities of Bamboo Sasa albomarginata Leaf Extract and Its Constituent Coumaric Acid Methyl Ester. ScientificWorldJournal 2022; 2022:8454865. [PMID: 36330350 PMCID: PMC9626218 DOI: 10.1155/2022/8454865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 08/18/2022] [Accepted: 10/07/2022] [Indexed: 11/06/2022] Open
Abstract
Background Hot water extract of Sasa albomarginata (Kumazasa) leaves is commercially available and used as a dietary supplement or skincare cream. The extract possesses anti-inflammatory activity on the mouse atopic dermatitis model. To elucidate the mechanism of in vivo activity, we have studied the cellular anti-inflammatory and antioxidant activities of the extract and its constituents. Methods Secretion of mouse and human IL-6 was measured by ELISA. ROS production was measured by a fluorescent reagent. Ultrahigh performance liquid chromatography (UHPLC)/MS was used for the ingredient analysis. Results The Sasa albomarginata extract inhibited inflammatory mediators such as LPS-induced NO, IL-6, and ROS production in mouse monocyte leukemia RAW264.7 cells. It also inhibited iNOS, IL-6, and IL-1β expressions. Moreover, it inhibited LPS-induced IL-6 expression and production in human monocyte leukemia THP-1 cells differentiated into macrophages. The HPLC analysis of the extract revealed the existence of coumaric acid, ferulic acid, and coumaric acid methyl ester. Coumaric acid methyl ester but not coumaric acid or ferulic acid inhibited LPS-induced NO, IL-6, and ROS production in RAW264.7 cells and IL-6 production in differentiated THP-1 cells. Conclusion The hot water extract of Sasa albomarginata leaves and one of its constituents possess cellular anti-inflammatory and antioxidant activities.
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Lignosulfonate Rapidly Inactivates Human Immunodeficiency and Herpes Simplex Viruses. MEDICINES 2021; 8:medicines8100056. [PMID: 34677485 PMCID: PMC8538131 DOI: 10.3390/medicines8100056] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 09/12/2021] [Accepted: 09/16/2021] [Indexed: 01/15/2023]
Abstract
Background: Very few studies of the antiviral potential of lignosulfonates have been published. With the aim of oral application, among various groups of natural products, the relative antiviral potency of lignosulfonate and its ability to rapidly inactivate viruses were investigated. Methods: As target cells, MT-4 cells in suspension and attached Vero cells were used for infections with human immunodeficiency virus (HIV) and human herpes simplex type-1 virus (HSV). Mock- or virus-infected cells were incubated for 3–5 days with various concentrations of test samples, and the viable cell number was determined with the MTT method. For the shorter exposure experiments, higher titers of HIV or HSV were exposed to test samples for 10 or 3 min, diluted to a normal multiplicity of infection (MOI), and applied to the cells. Antiviral activity was quantified by using the chemotherapy index. Results: In the long-exposure system, lignosulfonates showed comparable anti-HIV activity with those of AZT, ddC, and sulfated polysaccharides, and it exceeded those of hundreds of tannins and flavonoids. When the exposure time was shortened, the chemotherapeutic index of the lignosulfonates for HIV was increased 27-fold. At a physiological pH, lignosulfonate showed higher anti-HIV activity than commercial alkali-lignin, dealkali-lignin, and humic acid, possibly due to the higher solubility and purity. Conclusions: With their rapid virus-inactivation capabilities, lignosulfonates may be useful for the prevention or treatment of virally induced oral diseases.
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Sugimoto M. Editorial of Special Issue "Metabolomic Analysis in Health and Diseases". J Clin Med 2021; 10:jcm10163491. [PMID: 34441787 PMCID: PMC8396909 DOI: 10.3390/jcm10163491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 08/05/2021] [Indexed: 12/05/2022] Open
Affiliation(s)
- Masahiro Sugimoto
- Research and Development Center for Minimally Invasive Therapies, Tokyo Medical University, Shinjuku, Tokyo 160-8402, Japan; or ; Tel.: +81-235-29-0528; Fax: +81-235-29-0574
- Institute for Advanced Biosciences, Keio University, 246-2 Mizukami, Kakuganji, Tsuruoka, Yamagata 997-0052, Japan
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