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Zhang S, Chen S, Ao P, Cai R, Liu W, Wei L. Polysaccharides from Laminaria japonica protect memory abilities and neurogenesis in mice after cranial irradiation through ameliorating neuroinflammation and collagen IV degradation. Int J Radiat Biol 2022; 98:1-10. [PMID: 35394414 DOI: 10.1080/09553002.2022.2063961] [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: 07/22/2021] [Revised: 03/25/2022] [Accepted: 04/04/2022] [Indexed: 10/18/2022]
Abstract
BACKGROUND Radiation-induced brain injury (RIBI) is one of the most common long-term complications for patients with malignant brain tumors after radiotherapy. At present, there is no effective treatment for RIBI. Recent studies have also confirmed that polysaccharides from laminaria japonica (LJP) display potential neuroprotective function. However, its mechanisms of neuroprotection remain unclear. AIM In this study, we aimed to explore the effect and underlying mechanism of LJP on neurogenesis in radiation-induced brain injury mice. METHODS SPF two-month-old male mice were randomly divided into control group (Con), LJP treatment group (LJP), irradiation group (IR), and irradiation with LJP treatment group (IR + LJP). LJP (40 mg/kg/day) was intraperitoneally injected at one day before radiation for seven consecutive days (once daily). The mice were exposed to 10 Gy × 2 fractionated doses, once every other day, with a total dose of 20 Gy. Changes in cognitive function of mice following radiation were evaluated by the Morris water maze test. Furthermore, body weight and general status of mice were measured throughout the experiment. Immunohistochemical staining for neural proliferating cells (Ki67+ cells) and immature neurons (DCX + cells) was utilized to assay changes of neurogenesis in hippocampus. Microglial activation and collagen IV deposition within the neurogenic microenvironment were observed respectively by immunohistochemical staining for Iba-1 and Collagen IV in the hippocampus. Levels of pro-inflammatory cytokines (TNF-α and IL-1β) in the hippocampus were detected by ELISA kits post-radiation. RESULTS Morris water maze test showed that LJP therapy markedly reduced the escape latency and increased the times of crossing platform and percent time of the target quadrant in the radiated mice. In addition, the decrease of the neural proliferating cells (Ki67+ cells) and immature neurons (DCX + cells) in the hippocampus of mice following irradiation was significantly mitigated by the LJP treatment, suggesting that LJP could prevent from neurogenesis damage after irradiation. LJP injection significantly attenuated degradation of collagen IV, activation of microglia, and increase of pro-inflammatory cytokines (TNF-α and IL-1β) levels in the neurogenic microenvironment of the hippocampus after radiation. CONCLUSION These findings suggest that LJP early treatment may mitigate radiation-induced cognitive impairments and that its mechanism may relate to its protection of neurogenesis by alleviating neuroinflammation and collagen IV degradation within the neurogenic microenvironment.
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Affiliation(s)
- Siqin Zhang
- College of Stomatology, Guangxi Medical University, Guangxi Zhuang, Nanning, China
| | - Shaoyong Chen
- College of Stomatology, Guangxi Medical University, Guangxi Zhuang, Nanning, China
| | - Pian Ao
- College of Stomatology, Guangxi Medical University, Guangxi Zhuang, Nanning, China
| | - Rong Cai
- College of Stomatology, Guangxi Medical University, Guangxi Zhuang, Nanning, China
| | - Wenqi Liu
- Department of Radiation Oncology, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Li Wei
- School of Basic Medical Sciences, Guangxi Medical University, Nanning, China
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Luan F, Zou J, Rao Z, Ji Y, Lei Z, Peng L, Yang Y, He X, Zeng N. Polysaccharides from Laminaria japonica: an insight into the current research on structural features and biological properties. Food Funct 2021; 12:4254-4283. [PMID: 33904556 DOI: 10.1039/d1fo00311a] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Laminaria japonica, one of the most widespread seafood consumed in China and many other nations, has been traditionally utilized as an effective therapeutically active substance for treating weight loss, phlegm elimination, and detumescence for more than 2000 years. Numerous studies have found that the polysaccharides play an indispensable role in the nutritional and medicinal value of L. japonica. Water extraction and alcohol precipitation method is the most used method. Approximately 56 LJPs were successfully isolated and purified from L. japonica, whereas only few of them were well characterized. Modern pharmacological studies have shown that L. japonica polysaccharides (LJPs) have high-order structural features and multiple biological activities, including anti-tumor, anti-thrombotic, anti-atherosclerosis, hypolipidemic, hypoglycemic, antioxidant, anti-inflammatory, renoprotective, and immunomodulatory. In addition, the structural characteristics of LJPs are closely related to their biological activity. In this review, the extraction and purification methods, structural characteristics, biological activities, clinical settings, toxicities, and structure-activity relationships of LJPs are comprehensively summarized. The structural characteristics and biological activities as well as the underlying molecular mechanisms of LJPs were also outlined. Furthermore, the clinical settings and structure-activity functions of LJPs were highlighted. Some research perspectives and challenges in the study of LJPs were also proposed.
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Affiliation(s)
- Fei Luan
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Sichuan 611137, P. R. China.
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Manlusoc JKT, Hsieh CL, Hsieh CY, Salac ESN, Lee YT, Tsai PW. Pharmacologic Application Potentials of Sulfated Polysaccharide from Marine Algae. Polymers (Basel) 2019; 11:polym11071163. [PMID: 31288474 PMCID: PMC6680640 DOI: 10.3390/polym11071163] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 06/30/2019] [Accepted: 07/02/2019] [Indexed: 01/30/2023] Open
Abstract
With the advent of exploration in finding new sources for treating different diseases, one possible natural source is from marine algae. Having an array of potential benefits, researchers are interested in the components which comprise one of these activities. This can lead to the isolation of active compounds with biological activities, such as antioxidation of free radicals, anti-inflammation, antiproliferation of cancer cells, and anticoagulant to name a few. One of the compounds that are isolated from marine algae are sulfated polysaccharides (SPs). SPs are complex heterogenous natural polymers with an abundance found in different species of marine algae. Marine algae are known to be one of the most important sources of SPs, and depending on the species, its chemical structure varies. This variety has important physical and chemical components and functions which has gained the attention of researchers as this contributes to the many facets of its pharmacologic activity. In this review, recent pharmacologic application potentials and updates on the use of SPs from marine algae are discussed.
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Affiliation(s)
| | - Chieh-Lun Hsieh
- Department of Athletics Sports, College of Humanities and Social Sciences, Chang Jung Christian University, Tainan 711, Taiwan
| | - Cheng-Yang Hsieh
- Graduate Institute of Medical Sciences, College of Health Sciences, Chang Jung Christian University, Tainan 711, Taiwan
| | - Ellen San Nicolas Salac
- Office of the Vice President for Academic Affairs, Emilio Aguinaldo College, Manila 1000, Philippines
| | - Ya-Ting Lee
- Department of Beauty Science, National Taichung University of Science and Technology, Taichung 404, Taiwan.
| | - Po-Wei Tsai
- Department of Medical Sciences Industry, College of Health Sciences, Chang Jung Christian University, Tainan 711, Taiwan.
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Mohibbullah M, Bashir KMI, Kim SK, Hong YK, Kim A, Ku SK, Choi JS. Protective effects of a mixed plant extracts derived from Astragalus membranaceus and Laminaria japonica on PTU-induced hypothyroidism and liver damages. J Food Biochem 2019; 43:e12853. [PMID: 31353729 DOI: 10.1111/jfbc.12853] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 02/10/2019] [Accepted: 03/11/2019] [Indexed: 12/14/2022]
Abstract
Protective effects of a mixed hot water extracts of Astragalus membranaceus (AWE) and Laminaria japonica (LWE), AWE: LWE 85:15 (g/g; AL mix), were investigated against propylthiouracil (PTU)-induced hypothyroidism in rats. Rats were challenged with PTU, resulting in, increased thyroid gland weight, decreased liver weight and antioxidant activities, reduced serum tri-iodothyronine and thyroxine levels with increased thyroid stimulating hormone levels, and elevated serum aspartate aminotransferase level. However, orally administered AL mix with 100, 200, and 400 mg kg-1 day-1 , significantly inhibited such abnormalities, dose-dependently. Moreover, PTU-induced abnormal histological architecture of the rat thyroid gland and liver were also significantly ameliorated by an AL mix. The results suggested that, therapeutic use of AL mix for treating hypothyroidism can be characterized by its diversified active ingredients particularly iodine and ferulic acid as confirmed by phytochemical analyses. PRACTICAL APPLICATIONS: The AL mix has synergistic effects in modulating thyroid hormone synthesis and preventing liver damages in PTU-induced hypothyroid rats. These effects of AL mix are mainly related to its richness specifically in iodine and ferulic acid. The growing interests of iodine and ferulic acid in AL mix are principally due to their beneficial effects in releasing sufficient thyroid hormones in hypothyroid conditions and promoting liver-protective functions through its antioxidant and anti-inflammatory potentials, respectively. Moreover, the results of AL mix are well-matched with the effects of standard drug levothyroxine in the present study. Therefore, appropriate dosage of AL mix will be promising as new medicinal food for preventing thyroid dysfunctions and its related liver damages.
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Affiliation(s)
- Md Mohibbullah
- Seafood Research Center, IACF, Silla University, Busan, Republic of Korea
- Department of Fishing and Post Harvest Technology, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh
| | - Khawaja Muhammad Imran Bashir
- Seafood Research Center, IACF, Silla University, Busan, Republic of Korea
- Research Center for Extremophiles and Microbiology, College of Medical and Life Sciences, Silla University, Busan, Republic of Korea
| | - Sung-Kew Kim
- Marine Biotechnology Center, Silla University, MIZ Bio Health Care Co., Ltd., Busan, Republic of Korea
| | - Yong-Ki Hong
- Department of Biotechnology, Pukyong National University, Busan, Republic of Korea
| | - Andre Kim
- Major in Pharmaceutical Engineering, Division of Bioindustry, College of Medical and Life Sciences, Silla University, Busan, Republic of Korea
| | - Sae-Kwang Ku
- Department of Anatomy and Histology, College of Korean Medicine, Daegu Haany University, Gyeongsan-si, Republic of Korea
| | - Jae-Suk Choi
- Seafood Research Center, IACF, Silla University, Busan, Republic of Korea
- Major in Food Biotechnology, Division of Bioindustry, College of Medical and Life Sciences, Silla University, Busan, Republic of Korea
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Husni A, Lailatussifa R, Isnansetyo A. Sargassum hystrix as a Source of Functional Food to Improve Blood Biochemistry Profiles of Rats under Stress. Prev Nutr Food Sci 2019; 24:150-158. [PMID: 31328119 PMCID: PMC6615359 DOI: 10.3746/pnf.2019.24.2.150] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Accepted: 03/22/2019] [Indexed: 02/05/2023] Open
Abstract
This study was conducted to determine the influence of Sargassum hystrix powder (SHP) as an alternative source of functional food for treating in vivo stress by measuring levels of glucose, triacylglycerol, total cholesterol, and cortisol, and liver histopathology. Wistar rats aged 3 months and weighing 150~200 g were divided into 7 groups: normal control, fasting control, negative control (stress without adaptogen), and 4 experimental conditions (stress+0.18 mg/kg diazepam, stress+450 mg/kg pellet, stress+mixture of pellet with SHP 450 mg/kg, and stress+450 mg/kg of SHP). Intake of liquids and and body weight were measured daily. Blood samples were collected on day 0 (baseline), day 5, and day 10 to analyze levels of glucose, triacylglycerol, cholesterol, and cortisol. On day 10, rats were euthanized and livers were collected to observe the severity of inflammation. The results indicated that rats receiving SHP 450 mg/kg and the mixture of pellet with SHP 450 mg/kg showed a similar ability as those receiving diazepam 0.18 mg/kg to cope with stress, indicated by an improvement in all blood biochemistry parameters. Supplementation with SHP 450 mg/kg can be used as an alternative source of functional food for overcoming oxidative stress, as indicated by its ability to improve levels of blood glucose, triacylglycerol, total cholesterol, and cortisol, and to improve liver histology by decreasing severity of liver inflammation.
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Affiliation(s)
- Amir Husni
- Department of Fisheries Faculty of Agriculture, Universitas Gadjah Mada, Yogyakarta 55281, Indonesia
| | - Radipta Lailatussifa
- Department of Fisheries Faculty of Agriculture, Universitas Gadjah Mada, Yogyakarta 55281, Indonesia.,Sidoarjo Marine and Fisheries Polytechnic, Sidoarjo 61254, Indonesia
| | - Alim Isnansetyo
- Department of Fisheries Faculty of Agriculture, Universitas Gadjah Mada, Yogyakarta 55281, Indonesia
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Chen L, Xu W, Chen D, Chen G, Liu J, Zeng X, Shao R, Zhu H. Digestibility of sulfated polysaccharide from the brown seaweed Ascophyllum nodosum and its effect on the human gut microbiota in vitro. Int J Biol Macromol 2018; 112:1055-1061. [PMID: 29425873 DOI: 10.1016/j.ijbiomac.2018.01.183] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 01/18/2018] [Accepted: 01/28/2018] [Indexed: 12/13/2022]
Abstract
Sulfated polysaccharides from marine algae exhibit various bioactivities with potential benefits for human health and well-being. In this study, the in vitro digestibility and fermentability of polysaccharides from the brown seaweed Ascophyllum nodosum (AnPs) were examined, and the effects of AnPs on gut microbiota were determined using high-throughput sequencing technology. Salivary amylase, artificial gastric juice, and intestinal juice had no effect on AnPs, but the molecular weight of AnPs and reducing sugar decreased significantly after fermentation by gut microbiota. AnPs significantly modulated the composition of the gut microbiota; in particular, they increased the relative abundance of Bacteroidetes and Firmicutes, suggesting the potential for AnPs to decrease the risk of obesity. Furthermore, the total SCFA content after fermentation increased significantly. These results suggest that AnPs have potential uses as functional food components to improve human gut health.
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Affiliation(s)
- Ligen Chen
- College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, PR China; School of Marine and Bioengineering, Yancheng Institute of Technology, Yancheng 224051, China; Jiangsu Key Laboratory of Biochemistry and Biotechnology of Marine Wetland, Yancheng Institute of Technology, Yancheng 224051, PR China
| | - Wei Xu
- School of Marine and Bioengineering, Yancheng Institute of Technology, Yancheng 224051, China; Jiangsu Key Laboratory of Biochemistry and Biotechnology of Marine Wetland, Yancheng Institute of Technology, Yancheng 224051, PR China.
| | - Dan Chen
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Guijie Chen
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Junwei Liu
- School of Marine and Bioengineering, Yancheng Institute of Technology, Yancheng 224051, China
| | - Xiaoxiong Zeng
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Rong Shao
- Jiangsu Key Laboratory of Biochemistry and Biotechnology of Marine Wetland, Yancheng Institute of Technology, Yancheng 224051, PR China
| | - Hongjun Zhu
- College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, PR China.
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Yao Y, Xiang H, You L, Cui C, Sun-Waterhouse D, Zhao M. Hypolipidaemic and antioxidant capacities of polysaccharides obtained from Laminaria japonica
by different extraction media in diet-induced mouse model. Int J Food Sci Technol 2017. [DOI: 10.1111/ijfs.13508] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yujing Yao
- Food Department; Guangdong Food and Drug Vocational College; Guangzhou Guangdong 510520 China
| | - Huan Xiang
- College of Food Science and Engineering; South China University of Technology; Guangzhou Guangdong 510640 China
| | - Lijun You
- College of Food Science and Engineering; South China University of Technology; Guangzhou Guangdong 510640 China
| | - Chun Cui
- College of Food Science and Engineering; South China University of Technology; Guangzhou Guangdong 510640 China
| | - Dongxiao Sun-Waterhouse
- College of Food Science and Engineering; South China University of Technology; Guangzhou Guangdong 510640 China
| | - Mouming Zhao
- College of Food Science and Engineering; South China University of Technology; Guangzhou Guangdong 510640 China
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Cao HY, Ding RL, Li M, Yang MN, Yang LL, Wu JB, Yang B, Wang J, Luo CL, Wen QL. Danshensu, a major water-soluble component of Salvia miltiorrhiza, enhances the radioresponse for Lewis Lung Carcinoma xenografts in mice. Oncol Lett 2016; 13:605-612. [PMID: 28356936 PMCID: PMC5351344 DOI: 10.3892/ol.2016.5508] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Accepted: 09/15/2016] [Indexed: 12/21/2022] Open
Abstract
The molecule 3-(3,4-dihydroxyphenyl)-2-hydroxypropanoic acid (danshensu), a herbal preparation used in traditional Chinese medicine, has been found to possess potential antitumor and anti-angiogenesis effects. The aim of the present study was to investigate the efficacy of the combination of radiation therapy (RT) with danshensu in the treatment of Lewis lung carcinoma (LLC) xenografts, whilst exploring and evaluating the mechanism involved. In total, 8-week old female C57BL/6J mice were randomly assigned into 3 groups to receive: RT, RT + cisplatin and RT + danshensu, respectively, when LLC reached 100–150 mm3. Each group was divided into 7 subgroups according to the different irradiation doses that were administered. Tumor growth curves were created and the sensitization enhancement ratios of the drugs were calculated. The experiment was then repeated, and the 4 groups of tumor-bearing mice were treated with natural saline, danshensu, RT + danshensu and RT, respectively. The mice were sacrificed on day 7, and tumor tissue and blood were collected to determine microvessel density, the expression of proangiogenic factors, and the levels of blood thromboxane B2 and 6-keto-prostaglandin-F1α. Tumor hypoxia was also detected using in vivo fluorescence imaging. With respect to LLC xenografts, treatment with danshensu + RT significantly enhanced the effects of tumor growth inhibition (P<0.05). Furthermore, tumor vasculature was remodeled and microcirculation was improved, which significantly reduced tumor hypoxia (P<0.05). The present study demonstrated that danshensu significantly enhanced the radioresponse of LLC xenografts in mice. The mechanism involved may be associated with the alleviation of tumor cell hypoxia following treatment with danshensu + RT, caused by the improvement of tumor microcirculation and the remodeling of tumor vasculature.
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Affiliation(s)
- Hong-Ying Cao
- Department of Emergency, The Affiliated Hospital of Luzhou Medical College, Luzhou, Sichuan 646000, P.R. China
| | - Rui-Lin Ding
- Department of Oncology, The Affiliated Hospital of Luzhou Medical College, Luzhou, Sichuan 646000, P.R. China
| | - Meng Li
- Department of Oncology, The Affiliated Hospital of Luzhou Medical College, Luzhou, Sichuan 646000, P.R. China
| | - Mao-Nan Yang
- Department of Oncology, The Affiliated Hospital of Luzhou Medical College, Luzhou, Sichuan 646000, P.R. China
| | - Ling-Lin Yang
- Department of Oncology, The Affiliated Hospital of Luzhou Medical College, Luzhou, Sichuan 646000, P.R. China
| | - Jing-Bo Wu
- Department of Oncology, The Affiliated Hospital of Luzhou Medical College, Luzhou, Sichuan 646000, P.R. China
| | - Bo Yang
- Department of Oncology, The Affiliated Hospital of Luzhou Medical College, Luzhou, Sichuan 646000, P.R. China
| | - Jing Wang
- Department of Oncology, The Affiliated Hospital of Luzhou Medical College, Luzhou, Sichuan 646000, P.R. China
| | - Cui-Lian Luo
- Department of Oncology, The Affiliated Hospital of Luzhou Medical College, Luzhou, Sichuan 646000, P.R. China
| | - Qing-Lian Wen
- Department of Oncology, The Affiliated Hospital of Luzhou Medical College, Luzhou, Sichuan 646000, P.R. China
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Kong Q, Dong S, Gao J, Jiang C. In vitro fermentation of sulfated polysaccharides from E. prolifera and L. japonica by human fecal microbiota. Int J Biol Macromol 2016; 91:867-71. [PMID: 27316763 DOI: 10.1016/j.ijbiomac.2016.06.036] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Revised: 06/01/2016] [Accepted: 06/12/2016] [Indexed: 11/17/2022]
Abstract
In vitro fermentation of the sulfated polysaccharides from seaweeds Enteromorpha prolifera and Laminaria japonica and their prebiotic effects on human fecal microbiota were investigated in this study. The sulfated polysaccharides were fermented in vitro for 48h by human fecal cultures. When 0.8g MWCOL (polysaccharides MWCO<30kD) from L. japonica was fermented, the pH in fecal cultures decreased from 6.5 to 5.1 and the levels of short chain fatty acids, such as acetic, butyric and lactic acids all significantly increased. After 48h fermentation, 0.8g MWCOL showed good effect on modulating the gut microflora balance, because the beneficial strains (Lactobacillus and Bifidobacterium) were both significantly higher than those in control group (p<0.05). As far as we know, this is the first report that consumption of sulfated polysaccharides from E. prolifera and L. japonica is beneficial to the ecosystem of the intestinal tract by increasing the populations of probiotics and short chain fatty acids. Furthermore, our reports indicated that molecular weight of sulfated polysaccharide from marine algae is related to its prebiotic effects.
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Affiliation(s)
- Qing Kong
- School of Food Science and Engineering, Ocean University of China, Shandong 266003, China.
| | - Shiyuan Dong
- School of Food Science and Engineering, Ocean University of China, Shandong 266003, China
| | - Jian Gao
- School of Food Science and Engineering, Ocean University of China, Shandong 266003, China
| | - Chaoyu Jiang
- School of Food Science and Engineering, Ocean University of China, Shandong 266003, China
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Hu L, Tan J, Yang X, Tan H, Xu X, You M, Qin W, Huang L, Li S, Mo M, Wei H, Li J, Tan J. Polysaccharide Extracted from Laminaria japonica Delays Intrinsic Skin Aging in Mice. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2016; 2016:5137386. [PMID: 27143987 PMCID: PMC4837268 DOI: 10.1155/2016/5137386] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/03/2016] [Revised: 03/06/2016] [Accepted: 03/09/2016] [Indexed: 12/15/2022]
Abstract
This study aimed to determine the effect of topically applied Laminaria polysaccharide (LP) on skin aging. We applied ointment containing LP (10, 25, and 50 μg/g) or vitamin E (10 μg/g) to the dorsal skin of aging mice for 12 months and young control mice for 4 weeks. Electron microscopy analysis of skin samples revealed that LP increased dermal thickness and skin collagen content. Tissue inhibitor of metalloprotease- (TIMP-) 1 expression was upregulated while that of matrix metalloproteinase- (MMP-) 1 was downregulated in skin tissue of LP-treated as compared to untreated aging mice. Additionally, phosphorylation of c-Jun N-terminal kinase (JNK) and p38 was higher in aging skin than in young skin, while LP treatment suppressed phospho-JNK expression. LP application also enhanced the expression of antioxidative enzymes in skin tissue, causing a decrease in malondialdehyde levels and increases in superoxide dismutase, catalase, and glutathione peroxidase levels relative to those in untreated aging mice. These results indicate that LP inhibits MMP-1 expression by preventing oxidative stress and JNK phosphorylation, thereby delaying skin collagen breakdown during aging.
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Affiliation(s)
- Longyuan Hu
- Department of Physiology, Guangxi Medical University, Nanning 530021, China
- Center of Translational Medicine, Guangxi Medical University, Nanning 530021, China
| | - Jia Tan
- First Clinical Medical College, Guangzhou Medical University, Guangzhou 511436, China
| | - Xiaomei Yang
- Department of Physiology, Guangxi Medical University, Nanning 530021, China
| | - Haitao Tan
- Eighth Affiliated Hospital, Guangxi Medical University, Guigang 530007, China
| | - Xiaozhen Xu
- Center of Translational Medicine, Guangxi Medical University, Nanning 530021, China
| | - Manhang You
- Department of Physiology, Guangxi Medical University, Nanning 530021, China
| | - Wu Qin
- Department of Physiology, Guangxi Medical University, Nanning 530021, China
| | - Liangzhao Huang
- Department of Physiology, Guangxi Medical University, Nanning 530021, China
| | - Siqi Li
- Department of Physiology, Guangxi Medical University, Nanning 530021, China
| | - Manqiu Mo
- Department of Physiology, Guangxi Medical University, Nanning 530021, China
| | - Huifen Wei
- Department of Physiology, Guangxi Medical University, Nanning 530021, China
| | - Jing Li
- Department of Physiology, Guangxi Medical University, Nanning 530021, China
- Center of Translational Medicine, Guangxi Medical University, Nanning 530021, China
| | - Jiyong Tan
- Department of Physiology, Guangxi Medical University, Nanning 530021, China
- Center of Translational Medicine, Guangxi Medical University, Nanning 530021, China
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Collins KG, Fitzgerald GF, Stanton C, Ross RP. Looking Beyond the Terrestrial: The Potential of Seaweed Derived Bioactives to Treat Non-Communicable Diseases. Mar Drugs 2016; 14:E60. [PMID: 26999166 PMCID: PMC4820313 DOI: 10.3390/md14030060] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Revised: 02/19/2016] [Accepted: 03/10/2016] [Indexed: 12/22/2022] Open
Abstract
Seaweeds are a large and diverse group of marine organisms that are commonly found in the maritime regions of the world. They are an excellent source of biologically active secondary metabolites and have been shown to exhibit a wide range of therapeutic properties, including anti-cancer, anti-oxidant, anti-inflammatory and anti-diabetic activities. Several Asian cultures have a strong tradition of using different varieties of seaweed extensively in cooking as well as in herbal medicines preparations. As such, seaweeds have been used to treat a wide variety of health conditions such as cancer, digestive problems, and renal disorders. Today, increasing numbers of people are adopting a "westernised lifestyle" characterised by low levels of physical exercise and excessive calorific and saturated fat intake. This has led to an increase in numbers of chronic Non-communicable diseases (NCDs) such as cancer, cardiovascular disease, and diabetes mellitus, being reported. Recently, NCDs have replaced communicable infectious diseases as the number one cause of human mortality. Current medical treatments for NCDs rely mainly on drugs that have been obtained from the terrestrial regions of the world, with the oceans and seas remaining largely an untapped reservoir for exploration. This review focuses on the potential of using seaweed derived bioactives including polysaccharides, antioxidants and fatty acids, amongst others, to treat chronic NCDs such as cancer, cardiovascular disease and diabetes mellitus.
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Affiliation(s)
| | | | - Catherine Stanton
- Teagasc Moorepark, Fermoy, Cork, Ireland.
- APC Microbiome Institute, University College Cork, Cork, Ireland.
| | - R Paul Ross
- Teagasc Moorepark, Fermoy, Cork, Ireland.
- APC Microbiome Institute, University College Cork, Cork, Ireland.
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Meng J, Cao Y, Meng Y, Luo H, Gao X, Shan F. Maturation of mouse bone marrow dendritic cells (BMDCs) induced by Laminaria japonica polysaccharides (LJP). Int J Biol Macromol 2014; 69:388-92. [PMID: 24942994 DOI: 10.1016/j.ijbiomac.2014.05.018] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Revised: 04/21/2014] [Accepted: 05/05/2014] [Indexed: 12/25/2022]
Abstract
The seaweed Laminaria japonica has been investigated in a laboratory research for its medical significance and LJP has been purified now. The objective of present study was to look at effect of LJP on structural, phenotypic and functional maturation of murine BMDCs. The structural maturation of BMDCs induced by LJP was evaluated by transmission electron microscopy (TEM); The phenotypic maturation of BMDCs was studied by flow cytometry(FCM) and functional maturation of BMDCs was analyzed by FITC-dextran, acid phosphatase (ACP) activity and enzyme linked immunosorbent assay (ELISA). We hereby proved that LJP markedly induced maturation of BMDCs with the data of decreased the number of lysosomes, upregulated expression of CD80, CD83, CD86, CD40 and MHC II key membrane molecules on BMDCs, downregulated phagocytosis, enriched production of IL-12 and TNF-α secreted by BMDCs. Therefore it should be concluded that LJP was with strong ability to induce maturation of BMDCs. Our data provided direct evidence to suggest that LJP could be considered as an immune stimulant in improving immune handicapped situation and as a useful adjuvant in vaccine designing.
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Affiliation(s)
- Jingjuan Meng
- Experimental and Technical Center, China Medical University, No. 92, North Second Road, Shenyang 110001, China
| | - Yan Cao
- Department of Immunology, School of Basic Medical Science, China Medical University, No. 92, North Second Road, Shenyang 110001, China
| | - Yiming Meng
- Department of Immunology, School of Basic Medical Science, China Medical University, No. 92, North Second Road, Shenyang 110001, China
| | - Hong Luo
- College of Medical Laboratory, Dalian Medical University, Dalian 11604, China
| | - Xinghua Gao
- Department of Dermatology, No. 1 Hospital, China Medical University, Shenyang 110001, China
| | - Fengping Shan
- Department of Immunology, School of Basic Medical Science, China Medical University, No. 92, North Second Road, Shenyang 110001, China.
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