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Huang TH, Liu PY, Lin YL, Tsai JS. Hypoglycemic peptide-enriched hydrolysates of Corbicula fluminea and Chlorella sorokiniana possess synergistic hypoglycemic activity through inhibiting α-glucosidase and dipeptidyl peptidase-4 activity. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2022; 102:716-723. [PMID: 34171123 DOI: 10.1002/jsfa.11402] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 05/17/2021] [Accepted: 06/25/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND The prevalence of diabetes mellitus worldwide has increased in recent decades. Maintaining the level of blood glucose is the most basic and important issue for diabetics. This study aimed to investigate the hypoglycemic activity of a combination of hypoglycemic peptide-enriched hydrolysates of Corbicula fluminea (ACH) and Chlorella sorokiniana (PCH). RESULTS Combined supplementation of ACH and PCH synergistically inhibited α-glucosidase and DPP4 activities in vitro. After 4 weeks of treatment with ACH and/or PCH, the plasma glucose concentration and insulin, homeostasis model assessment-estimated insulin resistance (HOMA-IR), total cholesterol (TC) and triglyceride (TG) levels significantly decreased. The hypoglycemic peptides in ACH and PCH were purified and assayed for α-glucosidase and DPP4 activity. The hypoglycemic peptides in ACH and PCH effectively decreased α-glucosidase and DPP4 activities. In silico assays showed that these two peptide types have different docking poses, which determined their inhibitory effect against α-glucosidase and DPP4 activity. CONCLUSION Combined treatment with hypoglycemic peptide-enriched ACH and PCH could modulate blood glucose by synergistically inhibiting α-glucosidase and DPP4 activities. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Tse-Hung Huang
- Department of Traditional Chinese Medicine, Chang Gung Memorial Hospital, Keelung, Taiwan
- School of Traditional Chinese Medicine, Chang Gung University, Taoyuan, Taiwan
- School of Nursing, National Taipei University of Nursing and Health Sciences, Taipei, Taiwan
- Research Center for Chinese Herbal Medicine, Chang Gung University of Science and Technology, Taoyuan, Taiwan
- Graduate Institute of Traditional Chinese Medicine, Chang Gung University, Taoyuan, Taiwan
- Graduate Institute of Health Industry Technology, Chang Gung University of Science and Technology, Taoyuan, Taiwan
| | - Pi-Yu Liu
- Department of Food Science, National Taiwan Ocean University, Keelung, Taiwan
| | - Yu-Ling Lin
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, Taiwan
| | - Jenn-Shou Tsai
- Department of Food Science, National Taiwan Ocean University, Keelung, Taiwan
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GAO J, ZHANG C, QIN X, CAO W, CHEN J, LI Y, ZHENG H, LIN H, CHEN Z. Hepatoprotective effect of clam (Corbicula fluminea) protein hydrolysate on alcohol-induced liver injury in mice and partial identification of a hepatoprotective peptide from the hydrolysate. FOOD SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1590/fst.61522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Jialong GAO
- Guangdong Ocean University, China; National Research and Development Branch Center for Shellfish Processing, China; Guangdong Provincial Key Laboratory of Aquatic Products Processing and Safety, China; Guangdong Province Engineering Laboratory for Marine Biological Products, China; Key Laboratory of Advanced Processing of Aquatic Product of Guangdong Higher Education Institution, China; Dalian Polytechnic University, China
| | - Chaohua ZHANG
- Guangdong Ocean University, China; National Research and Development Branch Center for Shellfish Processing, China; Guangdong Provincial Key Laboratory of Aquatic Products Processing and Safety, China; Guangdong Province Engineering Laboratory for Marine Biological Products, China; Key Laboratory of Advanced Processing of Aquatic Product of Guangdong Higher Education Institution, China; Dalian Polytechnic University, China
| | - Xiaoming QIN
- Guangdong Ocean University, China; National Research and Development Branch Center for Shellfish Processing, China; Guangdong Provincial Key Laboratory of Aquatic Products Processing and Safety, China; Guangdong Province Engineering Laboratory for Marine Biological Products, China; Key Laboratory of Advanced Processing of Aquatic Product of Guangdong Higher Education Institution, China; Dalian Polytechnic University, China
| | - Wenhong CAO
- Guangdong Ocean University, China; National Research and Development Branch Center for Shellfish Processing, China; Guangdong Provincial Key Laboratory of Aquatic Products Processing and Safety, China; Guangdong Province Engineering Laboratory for Marine Biological Products, China; Key Laboratory of Advanced Processing of Aquatic Product of Guangdong Higher Education Institution, China; Dalian Polytechnic University, China
| | - Jianping CHEN
- Guangdong Ocean University, China; National Research and Development Branch Center for Shellfish Processing, China; Guangdong Provincial Key Laboratory of Aquatic Products Processing and Safety, China; Guangdong Province Engineering Laboratory for Marine Biological Products, China; Key Laboratory of Advanced Processing of Aquatic Product of Guangdong Higher Education Institution, China; Dalian Polytechnic University, China
| | - Yujin LI
- Ocean University of China, China
| | - Huina ZHENG
- Guangdong Ocean University, China; National Research and Development Branch Center for Shellfish Processing, China; Guangdong Provincial Key Laboratory of Aquatic Products Processing and Safety, China; Guangdong Province Engineering Laboratory for Marine Biological Products, China; Key Laboratory of Advanced Processing of Aquatic Product of Guangdong Higher Education Institution, China; Dalian Polytechnic University, China
| | - Haisheng LIN
- Guangdong Ocean University, China; National Research and Development Branch Center for Shellfish Processing, China; Guangdong Provincial Key Laboratory of Aquatic Products Processing and Safety, China; Guangdong Province Engineering Laboratory for Marine Biological Products, China; Key Laboratory of Advanced Processing of Aquatic Product of Guangdong Higher Education Institution, China; Dalian Polytechnic University, China
| | - Zhongqin CHEN
- Guangdong Ocean University, China; National Research and Development Branch Center for Shellfish Processing, China; Guangdong Provincial Key Laboratory of Aquatic Products Processing and Safety, China; Guangdong Province Engineering Laboratory for Marine Biological Products, China; Key Laboratory of Advanced Processing of Aquatic Product of Guangdong Higher Education Institution, China; Dalian Polytechnic University, China
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Suzuki A, Miyajima S, Mochizuki S, Umeki M, Sakai K, Koya M, Oda H, Nobuoka K, Ishikawa Y. Suppressive Effect of Yuzu ( Citrus junos) Peel Extract on Fatty Liver Steatosis Induced by a High-sucrose Diet in Rats. J JPN SOC FOOD SCI 2021. [DOI: 10.3136/nskkk.68.197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Ayako Suzuki
- Division of Applied Chemistry, Department of Integrated Science and Technology, Faculty of Science and Technology, Oita University
| | - Shiori Miyajima
- Division of Applied Chemistry, Department of Integrated Science and Technology, Faculty of Science and Technology, Oita University
| | | | - Miki Umeki
- Faculty of Food Science and Nutrition, Beppu University
| | - Kumiko Sakai
- Institute for Research Promotion, Oita University
| | - Mami Koya
- Institute for Research Promotion, Oita University
| | - Hiroaki Oda
- Graduate School of Bioagricultural Sciences, Nagoya University
| | - Kaoru Nobuoka
- Division of Applied Chemistry, Department of Integrated Science and Technology, Faculty of Science and Technology, Oita University
| | - Yuichi Ishikawa
- Division of Applied Chemistry, Department of Integrated Science and Technology, Faculty of Science and Technology, Oita University
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Gao G, Wang H, Zhou J, Rao P, Ke L, Lin JJ, Sun Pan B, Zhang Y, Wang Q. Isolation and Characterization of Bioactive Proteoglycan-Lipid Nanoparticles from Freshwater Clam ( Corbicula fluminea Muller) Soup. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:1610-1618. [PMID: 33501827 DOI: 10.1021/acs.jafc.0c02402] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Nanoparticles can be prepared by several sophisticated processes but until now, it cannot be prepared by simple home cooking. Here, we report that two incidental food nanoparticles (iFNPs) consisting of proteoglycans and phytosterols were isolated from soup made from freshwater clam (Corbicula fluminea Muller), a renowned folk remedy for liver problems in China and other parts of East Asia. These two bioactive iFNPs were obtained and characterized by anionic exchange chromatography coupled with multi-angle laser light scattering measurement. Their hydrodynamic diameters and ζ-potentials were 50 ± 0.2 nm and -28.0 mV and 67 ± 0.4 nm and -9.96 mV, respectively. FT-IR revealed that the proteoglycans in the particles contained α-type heteropolysaccharides. Both iFNPs were resistant to pH changes and separation by mechanical force but responsive to temperature changes. They effectively inhibited cholesterol uptake in vitro, which resonates with the traditional belief that freshwater clam soup provides hepatoprotective benefits. This study suggests that these two proteoglycan-lipid iFNPs are the active moieties and offers a supramolecular structure-based approach to study the function of such complex matrices derived from food.
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Affiliation(s)
- Guanzhen Gao
- Food Nutrition Sciences Centre, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310012, China
| | - Huiqin Wang
- Food Nutrition Sciences Centre, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310012, China
| | - Jianwu Zhou
- Food Nutrition Sciences Centre, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310012, China
| | - Pingfan Rao
- Food Nutrition Sciences Centre, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310012, China
| | - Lijing Ke
- Food Nutrition Sciences Centre, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310012, China
| | - Jing Jen Lin
- Department of Food Science, National Taiwan Ocean University, Keelung City 202, Taiwan
| | - Bonnie Sun Pan
- Department of Food Science, National Taiwan Ocean University, Keelung City 202, Taiwan
| | - Yue Zhang
- Food Nutrition Sciences Centre, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310012, China
| | - Qiang Wang
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100081, China
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5
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Suzuki A, Hirakawa E, Umeki M, Sakai K, Koya M, Oda H, Mochizuki S, Nobuoka K, Ishikawa Y. Yuzu, <i>Citrus junos</i>, peels extract ameliorated hepatic steatosis induced by chloretone in rats. FOOD SCIENCE AND TECHNOLOGY RESEARCH 2021. [DOI: 10.3136/fstr.27.281] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Ayako Suzuki
- Division of Applied Chemistry, Department of Integrated Science and Technology, Faculty of Science and Technology, Oita University
| | - Erika Hirakawa
- Division of Applied Chemistry, Department of Integrated Science and Technology, Faculty of Science and Technology, Oita University
| | - Miki Umeki
- Faculty of Food Science and Nutrition, Beppu University
| | - Kumiko Sakai
- Institute for Research Promotion, Oita University
| | - Mami Koya
- Institute for Research Promotion, Oita University
| | - Hiroaki Oda
- Graduate School of Bioagricultural Sciences, Nagoya University
| | | | - Kaoru Nobuoka
- Division of Applied Chemistry, Department of Integrated Science and Technology, Faculty of Science and Technology, Oita University
| | - Yuichi Ishikawa
- Division of Applied Chemistry, Department of Integrated Science and Technology, Faculty of Science and Technology, Oita University
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Ikeda S, Takahashi S, Suzuki N, Hanzawa F, Horio F, Oda H. Gut Microbiota Is Not Involved in the Induction of Acute Phase Protein Expression Caused by Vitamin C Deficiency. J Nutr Sci Vitaminol (Tokyo) 2020; 66:19-23. [PMID: 32115449 DOI: 10.3177/jnsv.66.19] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Using rats, we previously found that vitamin C deficiency increases serum levels of interleukin-6 (IL-6) and glucocorticoid, and changes the gene expression of acute phase proteins (APP) in the liver. However, it remains unclear how vitamin C deficiency causes these inflammation-like responses. In this study, we investigated the possibility that changes in gut microbiota are involved in the induction of APP gene expression by vitamin C deficiency. ODS rats that cannot genetically synthesize vitamin C were divided into 4 groups based on the presence or absence of vitamin C or antibiotics and were raised for 15 d. Neomycin, vancomycin, and ampicillin were used as antibiotics, and 300 mg L-ascorbic acid/kg was added to the AIN93G diet. Vitamin C deficiency affected neither the wet tissue weights nor relative abundance of bacteria in the cecal contents. Antibiotic administration increased wet weights of the cecum, cecal contents, and colon, changed the relative abundance of some bacteria in the cecal contents, and decreased serum IL-6 level. However, antibiotic administration had no effect on serum concentrations of corticosterone and α1-acid glycoprotein (AGP), vitamin C concentration in the liver, and mRNA levels of haptoglobin and AGP in the liver. Therefore, disturbance of gut microbiota did not attenuate the increase in glucocorticoid level and induction of APP gene expression due to vitamin C deficiency. This suggests that gut microbiota is not involved in the inflammation-like responses caused by vitamin C deficiency.
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Affiliation(s)
- Saiko Ikeda
- Department of Nutritional Sciences, Nagoya University of Arts and Sciences
| | - Saki Takahashi
- Department of Nutritional Sciences, Nagoya University of Arts and Sciences
| | - Norie Suzuki
- Department of Nutritional Sciences, Nagoya University of Arts and Sciences
| | - Fumiaki Hanzawa
- Department of Nutritional Sciences, Nagoya University of Arts and Sciences
| | - Fumihiko Horio
- Graduate School of Bioagricultural Sciences, Nagoya University
| | - Hiroaki Oda
- Graduate School of Bioagricultural Sciences, Nagoya University
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Yao HT, Lee PF, Lii CK, Liu YT, Chen SH. Freshwater clam extract reduces liver injury by lowering cholesterol accumulation, improving dysregulated cholesterol synthesis and alleviating inflammation in high-fat, high-cholesterol and cholic acid diet-induced steatohepatitis in mice. Food Funct 2019; 9:4876-4887. [PMID: 30160281 DOI: 10.1039/c8fo00851e] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Freshwater clam (Corbicula fluminea) is a traditional liver-protective food in Asia. Recent studies have renewed attention on high cholesterol accumulation and dysregulated cholesterol synthesis in the liver as a critical factor in the progression of nonalcoholic fatty liver disease (NAFLD) to nonalcoholic steatohepatitis (NASH). In this study, we investigated the protective effects of freshwater clam extract (FCE) and its fat fraction (FCE oil) on high-fat, high-cholesterol and cholic acid (HFHC) diet-induced lean steatohepatitis in mice. Mice were fed a HFHC diet containing FCE or FCE oil for 6 weeks. FCE, but not FCE oil, feeding reduced liver injury as indicated by decreased plasma alanine aminotransferase activity. Liver total cholesterol accumulation was reduced after FCE and FCE oil treatment. Accumulation of squalene and desmosterol, the precursors of cholesterol, in the liver was reduced by FCE but not by FCE oil. The caspase-1 (p10) and interleukin (IL)-1β (p17) protein expressions in the liver were suppressed by both FCE and FCE oil. Therefore, FCE may act as functional food that can reduce steatohepatitis and liver injury by reducing cholesterol accumulation, improving dysregulated cholesterol synthesis and attenuating inflammation.
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Affiliation(s)
- Hsien-Tsung Yao
- Department of Nutrition, China Medical University, 91 Hsueh-shih Road, Taichung 404, Taiwan.
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Ikeda S, Nomura S, Hanzawa F, Takahashi S, Oda H, Fujiwara Y, Uchida T. α-Tocopherol Intake Decreases Phylloquinone Concentration in Bone but Does Not Affect Bone Metabolism in Rats. J Nutr Sci Vitaminol (Tokyo) 2018; 64:243-250. [PMID: 30175786 DOI: 10.3177/jnsv.64.243] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Previous studies have shown that α-tocopherol intake lowers phylloquinone (PK) concentration in some extrahepatic tissues in rats. The study's aim was to clarify the effect of α-tocopherol intake on vitamin K concentration in bone, as well as the physiological action of vitamin K. Male Wistar rats were divided into 4 groups. Over a 3-mo period, the K-free group was fed a vitamin K-free diet with 50 mg RRR-α-tocopherol/kg, the E-free group was fed a diet containing 0.75 mg PK/kg without vitamin E, the control group was fed a diet containing 0.75 mg PK/kg with 50 mg RRR-α-tocopherol/kg, and the E-excess group was fed a diet containing 0.75 mg PK/kg with 500 mg RRR-α-tocopherol/kg. PK concentration in the liver was higher in E-excess rats than in E-free rats, was lower in the tibias of control rats than in those of E-free rats, and was lower in E-excess rats than in control rats. Menaquinone-4 (MK-4) concentration in the liver was higher in E-excess rats than in E-free and control rats. However, MK-4 concentrations in the tibias of E-free, control, and E-excess rats were almost the same. Blood coagulation activity was lower in K-free rats than in the other rats but was not affected by the level of α-tocopherol intake. Additionally, dietary intake of PK and α-tocopherol did not affect uncarboxylated-osteocalcin concentration in the serum, femur density, or expression of the genes related to bone resorption and formation in the femur. These results suggest that α-tocopherol intake decreases PK concentration in bone but does not affect bone metabolism in rats.
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Affiliation(s)
- Saiko Ikeda
- Department of Nutritional Sciences, Nagoya University of Arts and Sciences
| | - Saki Nomura
- Department of Nutritional Sciences, Nagoya University of Arts and Sciences
| | - Fumiaki Hanzawa
- Department of Nutritional Sciences, Nagoya University of Arts and Sciences
| | - Saki Takahashi
- Department of Nutritional Sciences, Nagoya University of Arts and Sciences
| | - Hiroaki Oda
- Department of Applied Molecular Biosciences, Nagoya University
| | - Yoko Fujiwara
- Department of Nutrition and Food Science, Ochanomizu University
| | - Tomono Uchida
- Department of Home Economics, Aichi Gakusen University
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Tang HH, Li HL, Li YX, You Y, Guan YY, Zhang SL, Liu LX, Bao WL, Zhou Y, Shen XY. Protective effects of a traditional Chinese herbal formula Jiang-Xian HuGan on Concanavalin A-induced mouse hepatitis via NF-κB and Nrf2 signaling pathways. JOURNAL OF ETHNOPHARMACOLOGY 2018; 217:118-125. [PMID: 29421593 DOI: 10.1016/j.jep.2018.02.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Revised: 01/31/2018] [Accepted: 02/03/2018] [Indexed: 05/21/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Jiang-Xian HuGan (JXHG) formulated by five natural products including Freshwater clam (Corbicula fluminea), Curcuma longa L., Ligustrum lucidum, Eclipta prostrata (L.) L. and Paeonia lactiflora Pall., has exhibited a great hepatoprotective effect. AIM OF THIS STUDY We investigated the effect of JXHG on concanavalin A (ConA)-induced acute live injury in mice, and to elucidate its underlying molecular mechanisms. MATERIALS AND METHODS Jiangkanling Capsule (900 mg/kg), low-dose JXHG (LJXHG, 700 mg/kg), high-dose JXHG (HJXHG, 1400 mg/kg) were administered to mice by oral gavage daily for 20 days prior to a single intravenous injection of ConA (20 mg/kg). Liver injury was evaluated by measuring the serum levels of enzymes and cytokines as well as liver histological analysis. We also measured the hepatic expression of cytokines at mRNA levels and the proteins related to NF-κB and Nuclear factor (erythroid-derived 2)-like 2 (Nrf2) signaling pathways. RESULT Our results showed that JXHG pretreatment significantly alleviated ConA-induced live injury as evidenced by decreased serum levels of glutamic-pyruvic transaminase (ALT) and glutamic oxalacetic transaminase (AST), and reduced hepatocyte apoptosis and mortality. Furthermore, JXHG was able to significantly reduce the serum levels of proinflammatory cytokines, down-regulate the mRNA expression of interleukin-6 (IL-6) and interferon-γ (IFN-γ), and up-regulate IL-10 as well as superoxide-dimutase-1 (SOD1), glutathione reductase (GSR) and Glutathione peroxidase 2 (GPX2) mRNA in the liver tissues after Con A injection. In addition, JXHG pretreatment dramatically suppressed the phosphorylation of NF-κB p65 (p65), increased Nrf2 expression, and decreased the expression ratio of cleaved caspase-3/caspase-3 in liver tissues. CONCLUSION These results suggest that JXHG protects against ConA-induced acute live injury through inhibiting NF-κB mediated inflammatory pathway and promoting Nrf2 mediated anti-oxidative stress signaling pathway.
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Affiliation(s)
- Huan-Huan Tang
- Department of Pharmacology, School of Pharmacy, Fudan University, No. 826, Zhangheng Road, Pudong New Area, Shanghai 201203, China; Department of Pharmacology, School of Pharmacy, Guilin Medical University, No. 109 Huanchengbei Road Two, Guilin 541004, China
| | - Hai-Long Li
- Infinitus R&D Center, Infinitus (China) Company Ltd, No.19, Sicheng Road, The First Floor of HongTai Zhihui Valley, Tianhe Area, Guangzhou 510663, China
| | - Yue-Xuan Li
- Department of Pharmacology, School of Pharmacy, Fudan University, No. 826, Zhangheng Road, Pudong New Area, Shanghai 201203, China
| | - Yan You
- Department of Pharmacology, School of Pharmacy, Fudan University, No. 826, Zhangheng Road, Pudong New Area, Shanghai 201203, China
| | - Yun-Yun Guan
- Department of Pharmacology, School of Pharmacy, Fudan University, No. 826, Zhangheng Road, Pudong New Area, Shanghai 201203, China
| | - Su-Lin Zhang
- Department of Pharmacology, School of Pharmacy, Fudan University, No. 826, Zhangheng Road, Pudong New Area, Shanghai 201203, China
| | - Li-Xin Liu
- Department of Pharmacology, School of Pharmacy, Fudan University, No. 826, Zhangheng Road, Pudong New Area, Shanghai 201203, China
| | - Wei-Lian Bao
- Department of Pharmacology, School of Pharmacy, Fudan University, No. 826, Zhangheng Road, Pudong New Area, Shanghai 201203, China
| | - Yong Zhou
- Infinitus R&D Center, Infinitus (China) Company Ltd, No.19, Sicheng Road, The First Floor of HongTai Zhihui Valley, Tianhe Area, Guangzhou 510663, China.
| | - Xiao-Yan Shen
- Department of Pharmacology, School of Pharmacy, Fudan University, No. 826, Zhangheng Road, Pudong New Area, Shanghai 201203, China.
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Peng YC, Subeq YM, Tien CC, Lee RP. Freshwater clam extract supplementation improves wound healing by decreasing the tumor necrosis factor α level in blood. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2017; 97:1193-1199. [PMID: 27300309 DOI: 10.1002/jsfa.7849] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Revised: 05/04/2016] [Accepted: 06/05/2016] [Indexed: 06/06/2023]
Abstract
BACKGROUND The freshwater clam (Corbicula fluminea) is a widely consumed functional food in Asia and is traditionally used to improve health and either prevent or treat inflammation-related diseases. Numerous studies have proposed that freshwater clams act to prevent and attenuate inflammatory responses, and also serve as a possible inhibitor to systemic inflammation. However, there is limited information available about the effects of freshwater clams on wound healing. RESULTS The present study investigated the influence of freshwater clam extract (FCE) on wound healing and inflammatory responses in a cutaneous incision model. Sixteen rats were used and divided into two groups: the FCE group and the normal saline (NS) group. The rats underwent dorsal full-thickness skin excisional wounds (diameter 20 × 10 mm). FCE or NS was administered for oral feeding twice daily for 14 days after wounding. Blood samples were taken and analyzed, and wound areas were measured at several time points during the 2 weeks after excision. On day 14 after wounding, skin biopsies from the wound sites were sent for histological examination. Treatment with FCE (71.63 ± 9.51 pg mL-1 ) decreased tumor necrosis factor-α levels compared to the NS group (109.86 ± 12.55 pg mL-1 ) after wounding at 3 h (P < 0.05). There were no significant differences in the levels of white blood cells, interleukin (IL)-6, or IL-10. The wound areas of the NS group (23.9%) were larger than those in the FCE group (8.26%) on day 14 (P < 0.05). Numerous fibroblasts and collagen fiber organization were observed in the FCE group. CONCLUSION FCE supplementation improves the wound healing process. © 2016 Society of Chemical Industry.
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Affiliation(s)
- Yi-Chi Peng
- Institute of Medical Sciences, Tzu Chi University, Hualien, 97004, Taiwan
- Department of Nursing, National Taichung University of Science and Technology, Taichung, 40343, Taiwan
| | - Yi-Maun Subeq
- Department of Nursing, Tzu Chi University, Hualien, 97004, Taiwan
| | - Chin-Chieh Tien
- Institute of Medical Sciences, Tzu Chi University, Hualien, 97004, Taiwan
- Department of Nursing, Hsin Sheng College of Medical Care and Management, Taoyuan, 32544, Taiwan
| | - Ru-Ping Lee
- Institute of Medical Sciences, Tzu Chi University, Hualien, 97004, Taiwan
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