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Luo L, Meng X, Wang S, Zhang R, Guo K, Zhao Z. Effects of dietary ginger (Zingiber officinale) polysaccharide on the growth, antioxidant, immunity response, intestinal microbiota, and disease resistance to Aeromonas hydrophila in crucian carp (Carassius auratus). Int J Biol Macromol 2024:133711. [PMID: 38977043 DOI: 10.1016/j.ijbiomac.2024.133711] [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: 01/07/2024] [Revised: 06/23/2024] [Accepted: 07/05/2024] [Indexed: 07/10/2024]
Abstract
Ginger polysaccharides (GP) promote growth and development in fish. However, the effects of GP on crucian carp remain unclear. The present study investigated the effects of GP on the growth performance, immunity, intestinal microbiota, and disease resistance in crucian carp. Four treatment groups were established with different concentrations of GP (0.1 %, 0.2 %, 0.4 %, and 0.8 %). GP was not added as the control group, and the feeding period lasted for 56 d, followed by a 96-h anti-infection treatment using Aeromonas hydrophila. The results showed that dietary GP significantly improved growth performance, especially in the 0.4 % GP group. Furthermore, GP administration notably increased serum lysozyme (LMZ) activity, digestive enzyme performance, and antioxidant capacity of crucian carp. Moreover, dietary inclusion of GP up-regulated the expression of tumour necrosis factor-α (TNF-α), interleukin-8 (IL-8), interferon-γ (IFN-γ), and nuclear factor kappa-B (NF-κB) genes while down-regulating IL-10 and transforming growth factor-β (TGF-β) gene expressions, thus promoting liver health in crucian carp. Additionally, incorporating GP into the diet regulated both the diversity and composition of the intestinal microbiota in crucian carp, explicitly enhancing the relative abundance of beneficial bacteria, such as Fusobacteriota and Firmicutes. Therefore, GP reduces the mortality of crucian carp infected with A. hydrophila. In conclusion, this study provides novel insights into the application of dietary GP in cultured fish and evaluates the value of traditional Chinese medicinal polysaccharides against pathogenic bacteria.
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Affiliation(s)
- Liang Luo
- Key Laboratory of Cold Water Fish Germplasm Resources and Multiplication and Cultivation of Heilongjiang Province, Heilongjiang River Fishery Research Institute, Chinese Academy of Fishery Sciences, Harbin 150070, PR China
| | - Xianwei Meng
- Key Laboratory of Cold Water Fish Germplasm Resources and Multiplication and Cultivation of Heilongjiang Province, Heilongjiang River Fishery Research Institute, Chinese Academy of Fishery Sciences, Harbin 150070, PR China; Center of Pharmaceutical Engineering and Technology, Harbin University of Commerce, Harbin 150076, PR China
| | - Shihui Wang
- Key Laboratory of Cold Water Fish Germplasm Resources and Multiplication and Cultivation of Heilongjiang Province, Heilongjiang River Fishery Research Institute, Chinese Academy of Fishery Sciences, Harbin 150070, PR China
| | - Rui Zhang
- Key Laboratory of Cold Water Fish Germplasm Resources and Multiplication and Cultivation of Heilongjiang Province, Heilongjiang River Fishery Research Institute, Chinese Academy of Fishery Sciences, Harbin 150070, PR China
| | - Kun Guo
- Key Laboratory of Cold Water Fish Germplasm Resources and Multiplication and Cultivation of Heilongjiang Province, Heilongjiang River Fishery Research Institute, Chinese Academy of Fishery Sciences, Harbin 150070, PR China
| | - Zhigang Zhao
- Key Laboratory of Cold Water Fish Germplasm Resources and Multiplication and Cultivation of Heilongjiang Province, Heilongjiang River Fishery Research Institute, Chinese Academy of Fishery Sciences, Harbin 150070, PR China.
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Bakry KA, Nasr M, Al-Amgad Z, Kondos E, Kondos MKN, Mehanny PE, Alghamdi AAA, Khormi MA, Abd-ElHafeez HH, Emeish WFA. Resistance of Nile tilapia fed with Padina boergesenii extract to Pseudomonas putida infection. BMC Vet Res 2024; 20:281. [PMID: 38951863 PMCID: PMC11218147 DOI: 10.1186/s12917-024-04115-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Accepted: 06/05/2024] [Indexed: 07/03/2024] Open
Abstract
The aim of this research was to estimate the immunopotentiation effect of brown algae Padina boergesenii water extract on Nile tilapia, Oreochromis niloticus through resistance to Pseudomonas putida infection. Gas Chromatography Mass Spectrometry was utilized to characterize the seaweed phytoconstituents. One hundred and twenty-six fish were divided in triplicates into two equal groups corresponding to two diet variants that used to feed Nile tilapia for 20 successive days: a basal (control), and P. boergesenii water extract supplemented group. Fish samples were collected at 10-days intervals throughout the experiment. Serum biochemical constituents, total antioxidant capacity (TAC), and some immune related genes expression of the spleen and intestinal tissues of experimental fish were studied, as well as histological examination of fish immune tissues. Moreover, following 20 days of feeding, the susceptibility of Nile tilapia to P. putida infection was evaluated to assess the protective effect of the used extract. The findings indicated that the studied parameters were significantly increased, and the best immune response profiles were observed in fish fed P. boergesenii water extract for 20 successive days. A bacterial challenge experiment using P. putida resulted in higher survival within the supplemented fish group than the control. Thus, the lowered post-challenge mortality of the fish may be related to the protection provided by the stimulation of the innate immune system, reduced oxidative stress by higher activity of TAC, and elevated levels of expression of iterleukin-1beta (IL-1β), beta-defensin (β-defensin), and natural killer-lysin (NKl). Moreover, the constituents of the extract used showed potential protective activity for histological features of the supplemented fish group when compared to the control. Collectively, this study presents a great insight on the protective role of P. boergesenii water extract as an additive in Nile tilapia feed which suggests its potential for improving the immune response against P. putida infection.
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Affiliation(s)
- Karima A Bakry
- Department of Fish Diseases, Faculty of Veterinary Medicine, South Valley University, Qena, 83523, Egypt.
| | - Mahmoud Nasr
- Department of Fish Diseases, Faculty of Veterinary Medicine, South Valley University, Qena, 83523, Egypt
| | - Zeinab Al-Amgad
- General Authority for Veterinary Services, Qena Veterinary Directorate, Qena, Egypt
| | - Ereen Kondos
- Department of Pharmacology, Faculty of Veterinary Medicine, South Valley University, Qena, 83523, Egypt
| | - Malak K N Kondos
- National Institute of Oceanography and Fisheries (NIOF), Cairo, 11516, Egypt
| | - Pierre E Mehanny
- Department of Biochemistry, Toxicology and Feed Deficiency, Agriculture Research Center (ARC), Animal Health Research Institute (AHRI), Giza, 12618, Egypt
| | - Abdullah A A Alghamdi
- Department of Biology, Faculty of Science, Al-Baha University, Al-Baha, Saudi Arabia
| | - Mohsen A Khormi
- Department of Biology, College of Science, Jazan University, P.O. Box. 114, Jazan, 45142, Kingdom of Saudi Arabia
| | - Hanan H Abd-ElHafeez
- Department of Cell and Tissues, Faculty of Veterinary Medicine, Assiut University, Assiut, 71526, Egypt.
| | - Walaa F A Emeish
- Department of Fish Diseases, Faculty of Veterinary Medicine, South Valley University, Qena, 83523, Egypt.
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Chen N, Hu M, Jiang T, Xiao P, Duan JA. Insights into the molecular mechanisms, structure-activity relationships and application prospects of polysaccharides by regulating Nrf2-mediated antioxidant response. Carbohydr Polym 2024; 333:122003. [PMID: 38494201 DOI: 10.1016/j.carbpol.2024.122003] [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: 12/11/2023] [Revised: 02/24/2024] [Accepted: 02/26/2024] [Indexed: 03/19/2024]
Abstract
The occurrence and development of many diseases are closely related to oxidative stress. In this context, accumulating evidence suggests that Nrf2, as the master switch of cellular antioxidant signaling, plays a central role in controlling the expression of antioxidant genes. The core molecular mechanism of polysaccharides treatment of oxidative stress-induced diseases is to activate Keap1/Nrf2/ARE signaling pathway, promote nuclear translocation of Nrf2, and up-regulate the expression of antioxidant enzymes. However, recent studies have shown that other signaling pathways in which polysaccharides exert antioxidant effects, such as PI3K/Akt/GSK3β, JNK/Nrf2 and NF-κB, have complex crosstalk with Keap1/Nrf2/ARE, may have direct effects on the nuclear translocation of Nrf2. This suggests a new strategy for designing polysaccharides as modulators of Nrf2-dependent pathways to target the antioxidant response. Therefore, in this work, we investigate the crosstalk between Keap1/Nrf2/ARE and other antioxidant signaling pathways of polysaccharides by regulating Nrf2-mediated antioxidant response. For the first time, the structural-activity relationship of polysaccharides, including molecular weight, monosaccharide composition, and glycosidic linkage, is systematically elucidated using principal component analysis and cluster analysis. This review also summarizes the application of antioxidant polysaccharides in food, animal production, cosmetics and biomaterials. The paper has significant reference value for screening antioxidant polysaccharides targeting Nrf2.
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Affiliation(s)
- Nuo Chen
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, and Jiangsu Key Laboratory for High Technology Research of TCM Formulae, Nanjing University of Chinese Medicine, Nanjing 210023, PR China
| | - Meifen Hu
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, and Jiangsu Key Laboratory for High Technology Research of TCM Formulae, Nanjing University of Chinese Medicine, Nanjing 210023, PR China
| | - Tingyue Jiang
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, and Jiangsu Key Laboratory for High Technology Research of TCM Formulae, Nanjing University of Chinese Medicine, Nanjing 210023, PR China
| | - Ping Xiao
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, and Jiangsu Key Laboratory for High Technology Research of TCM Formulae, Nanjing University of Chinese Medicine, Nanjing 210023, PR China.
| | - Jin-Ao Duan
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, and Jiangsu Key Laboratory for High Technology Research of TCM Formulae, Nanjing University of Chinese Medicine, Nanjing 210023, PR China.
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4
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Jahaniyan Bahnamiri A, Abedian Kenari A, Babaei S, Banavreh A, Soltanian S. Dietary sulfated polysaccharides extracted from Caulerpa sp. and Padina sp. modulated physiological performance, antibacterial activity and ammonia challenge test in juvenile rainbow trout (Oncorhynchus mykiss). J Anim Physiol Anim Nutr (Berl) 2024; 108:324-337. [PMID: 37867426 DOI: 10.1111/jpn.13894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 08/06/2023] [Accepted: 10/11/2023] [Indexed: 10/24/2023]
Abstract
Nowadays, the use of seaweed derivatives in aquaculture has drawn attention for their potential as an immunostimulant and growth promotor. The sulfated polysaccharide extracted (SPE ) from green (Caulerpa sp.; SPC) and brown (Padina sp.; SPP) seaweeds with two concentrations (0.05% and 0.1%); nominated in four groups: SPC0.05 , SPC0.1 , SPP0.05 , SPP0.1 and control group (free of SPE ) were used for juvenile rainbow trout (Oncorhynchus mykiss) diet. Fish (N: 150; 8.5 ± 0.2 g) were selected aleatory distributed in 15 circular tanks (triplicate for the group) and fed test diets for 56 days. The outcomes revealed that the supplementation of SPE up to 1 g kg-1 failed to show significant differences in the organosomatic indices as compared to the control group. The most inferior protein value of dress-out fish composition was observed in the fish fed the control diet, which was statistically lower than the SCP0.1 group (p < 0.05), while no significant difference was observed in other macronutrient composition among the treatments. Total monounsaturated fatty acid (MUFA) had lower trend in the carcass of fish fed SPE supplemented diets, so that lowest MUFA were observed in SPC0.05 group (p < 0.05; 25.22 ± 4.29%). The lowest value of docosahexaenoic acid was observed in the control diet compared to the SPE -supplemented diets (p < 0.05). The serum alternative complement pathway levels in all treatments tend to promote compared to the control treatment. A similar trend was observed for lysozyme activity. According to the results, the superoxide dismutase (SOD) value were highest in SPC0.05 and SPC0.1 compared to the other treatments (p < 0.05), while a further elevation of the SPE Padina sp. extracted level (SPP0.1 ) leads to a decrease in SOD value. Thiobarbituric acid reactive substances of plasma was indicated not to influence by sulfated polysaccharide extracts in the refrigerated storage. The lowest serum stress indicators were observed in fish fed SPP0.05 group postchallenge test. Taken together, our outcomes revealed that SPE of two species of seaweeds bestows benefits in some of the immunity and antioxidant system. Also, notable elevations in HUFA were observed in juvenile rainbow trout fed supplemented with SPE .
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Affiliation(s)
- Ahmad Jahaniyan Bahnamiri
- Aquaculture Department, Natural Resources and Marine Sciences Faculty, Tarbiat Modares University, Noor, Mazandaran, Iran
| | - Abdolmohammad Abedian Kenari
- Aquaculture Department, Natural Resources and Marine Sciences Faculty, Tarbiat Modares University, Noor, Mazandaran, Iran
| | - Sedigheh Babaei
- Natural Resources and Environmental Engineering Department, School of Agriculture, Shiraz University, Shiraz, Fars, Iran
| | - Akbar Banavreh
- Animal Science Department, Agriculture Faculty, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Siyavash Soltanian
- Aquatic Animal Health and Diseases Department, School of Veterinary Medicine, Shiraz University, Shiraz, Fars, Iran
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Nguyen HC, Ngo KN, Tran HK, Barrow CJ. Enzyme-Assisted Coextraction of Phenolics and Polysaccharides from Padina gymnospora. Mar Drugs 2024; 22:42. [PMID: 38248667 PMCID: PMC10817698 DOI: 10.3390/md22010042] [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: 10/23/2023] [Revised: 12/27/2023] [Accepted: 01/09/2024] [Indexed: 01/23/2024] Open
Abstract
Brown seaweed is a promising source of polysaccharides and phenolics with industrial utility. This work reports the development of a green enzyme-assisted extraction method for simultaneously extracting polysaccharides and phenolics from the brown seaweed Padina gymnospora. Different enzymes (Cellulast, Pectinex, and Alcalase), individually and in combination, were investigated, with Alcalase alone showing the highest efficiency for the simultaneous extraction of polysaccharides and phenolics. Yields from Alcalase-assisted aqueous extraction were higher than those obtained using either water alone or conventional ethanol extraction. Alcalase-assisted extraction was subsequently optimized using a response surface methodology to maximize compound recovery. Maximal polysaccharide and phenolic recovery was obtained under the following extraction conditions: a water-to-sample ratio of 61.31 mL/g, enzyme loading of 0.32%, temperature of 60.5 °C, and extraction time of 1.95 h. The extract was then fractionated to obtain alginate-, fucoidan-, and phenolic-rich fractions. Fractions exhibited potent 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity with IC50 values of 140.55 µg/mL, 126.21 µg/mL, and 48.17 µg/mL, respectively, which were higher than those obtained from conventional extraction methods. The current work shows that bioactive polysaccharides and phenolics can be obtained together in high yield through a single aqueous-only green and efficient Alcalase-assisted extraction.
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Affiliation(s)
- Hoang Chinh Nguyen
- Centre for Sustainable Bioproducts, Deakin University, Geelong, VIC 3216, Australia
| | - Kim Ngan Ngo
- Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam; (K.N.N.); (H.K.T.)
| | - Hoai Khang Tran
- Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam; (K.N.N.); (H.K.T.)
| | - Colin J. Barrow
- Centre for Sustainable Bioproducts, Deakin University, Geelong, VIC 3216, Australia
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Siddik MAB, Francis P, Rohani MF, Azam MS, Mock TS, Francis DS. Seaweed and Seaweed-Based Functional Metabolites as Potential Modulators of Growth, Immune and Antioxidant Responses, and Gut Microbiota in Fish. Antioxidants (Basel) 2023; 12:2066. [PMID: 38136186 PMCID: PMC10740464 DOI: 10.3390/antiox12122066] [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: 09/09/2023] [Revised: 11/26/2023] [Accepted: 11/27/2023] [Indexed: 12/24/2023] Open
Abstract
Seaweed, also known as macroalgae, represents a vast resource that can be categorized into three taxonomic groups: Rhodophyta (red), Chlorophyta (green), and Phaeophyceae (brown). They are a good source of essential nutrients such as proteins, minerals, vitamins, and omega-3 fatty acids. Seaweed also contains a wide range of functional metabolites, including polyphenols, polysaccharides, and pigments. This study comprehensively discusses seaweed and seaweed-derived metabolites and their potential as a functional feed ingredient in aquafeed for aquaculture production. Past research has discussed the nutritional role of seaweed in promoting the growth performance of fish, but their effects on immune response and gut health in fish have received considerably less attention in the published literature. Existing research, however, has demonstrated that dietary seaweed and seaweed-based metabolite supplementation positively impact the antioxidant status, disease resistance, and stress response in fish. Additionally, seaweed supplementation can promote the growth of beneficial bacteria and inhibit the proliferation of harmful bacteria, thereby improving gut health and nutrient absorption in fish. Nevertheless, an important balance remains between dietary seaweed inclusion level and the resultant metabolic alteration in fish. This review highlights the current state of knowledge and the associated importance of continued research endeavors regarding seaweed and seaweed-based functional metabolites as potential modulators of growth, immune and antioxidant response, and gut microbiota composition in fish.
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Affiliation(s)
- Muhammad A. B. Siddik
- School of Life and Environmental Sciences, Deakin University, Geelong, VIC 3216, Australia; (P.F.); (T.S.M.); (D.S.F.)
| | - Prue Francis
- School of Life and Environmental Sciences, Deakin University, Geelong, VIC 3216, Australia; (P.F.); (T.S.M.); (D.S.F.)
| | - Md Fazle Rohani
- Department of Aquaculture, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh;
| | | | - Thomas S. Mock
- School of Life and Environmental Sciences, Deakin University, Geelong, VIC 3216, Australia; (P.F.); (T.S.M.); (D.S.F.)
| | - David S. Francis
- School of Life and Environmental Sciences, Deakin University, Geelong, VIC 3216, Australia; (P.F.); (T.S.M.); (D.S.F.)
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Priyadarshini SK, Murugesan M, Michael RD, Aiya Subramani P, Rajendran P. Oral administration of terpenoids and phenol fraction of Padina gymnospora stimulates the nonspecific immune response and expression of immune genes, and protects the common carp (Cyprinus carpio) from experimental Aeromonas hydrophila infection. FISH & SHELLFISH IMMUNOLOGY 2023; 142:109141. [PMID: 37802262 DOI: 10.1016/j.fsi.2023.109141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Revised: 10/01/2023] [Accepted: 10/03/2023] [Indexed: 10/08/2023]
Abstract
Common carp (Cyprinus carpio), a valuable aquaculture species susceptible to various infections, requires effective immune enhancement strategies. This study investigates the immunomodulatory effects of orally administered terpenoids and phenol fraction (TPF) from Padina gymnospora in C. carpio, focusing on stimulation of nonspecific immune response, immune gene expression, and protection against experimental infection. P. gymnospora is a brown seaweed species known for its bioactive compounds and medicinal properties. TPF was extracted using the Harborne fractionation method, and the presence of terpenoids and phenol compounds was confirmed by qualitative analysis and high-performance thin layer chromatography (HPTLC). TPF was administered orally in different doses to carp. Nonspecific immune responses were evaluated by measuring cellular ROS, RNI, and peroxidase production. The expression of immune genes (lysozyme and interleukin-1β) was assessed by reverse transcriptase PCR. Furthermore, the protective efficacy of TPF was determined by infecting carp with a virulent pathogen, Aeromonas hydrophila, and monitoring mortality rates and disease symptoms. The results demonstrate that oral TPF administration significantly enhances nonspecific immune responses, with increased ROS, RNI, and peroxidase production, indicating improved immune function. Expression levels of lysozyme and interleukin-1β were upregulated, suggesting immune system activation. Moreover, TPF exhibited significant protection against experimental infection, with lower mortality rates compared to the control group. These findings highlight TPF's potential as an effective immunostimulatory agent, enhancing immune responses and providing infection protection in carp. In conclusion, oral TPF administration stimulates nonspecific immune responses, modulates immune gene expression, and confers protection against experimental infection in carp, displaying its potential for enhancing immune responses and disease resistance in aquaculture species, and contributing to sustainable fish health management.
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Affiliation(s)
| | - Monica Murugesan
- Department of Zoology and Research Centre, Lady Doak College, Madurai, Tamil Nadu, 625002, India
| | - R Dinakaran Michael
- Centre for Fish Immunology, Vels Institute of Science, Technology, and Advanced Studies, Chennai, Tamil Nadu, 600117, India
| | - Parasuraman Aiya Subramani
- Department of Fisheries Ecology, Johann Heinrich von Thünen-Institut, Herwigstraße 31, 27572, Bremerhaven, Germany.
| | - Priyatharsini Rajendran
- Department of Zoology and Research Centre, Lady Doak College, Madurai, Tamil Nadu, 625002, India.
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Bakky MAH, Tran NT, Zhang M, Zhang Y, Liang H, Wang Y, Zhang Y, Ma H, Zheng H, Li S. In vitro fermentation of Gracilaria lemaneiformis and its sulfated polysaccharides by rabbitfish gut microbes. Int J Biol Macromol 2023; 246:125561. [PMID: 37364810 DOI: 10.1016/j.ijbiomac.2023.125561] [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: 03/21/2023] [Revised: 05/22/2023] [Accepted: 06/23/2023] [Indexed: 06/28/2023]
Abstract
This study intended to characterize the Gracilaria lemaneiformis (SW)-derived polysaccharide (GLP) and explore the fermentation aspects of SW and GLP by rabbitfish (Siganus canaliculatus) intestinal microbes. The GLP was mainly composed of galactose and anhydrogalactose (at 2.0:0.75 molar ratio) with the linear mainstay of α-(1 → 4) linked 3,6-anhydro-α-l-galactopyranose and β-(1 → 3)-linked galactopyranose units. The in vitro fermentation results showed that the SW and GLP could reinforce the short-chain fatty (SCFAs) production and change the diversity and composition of gut microbiota. Moreover, GLP boosted the Fusobacteria and reduced the Firmicutes abundance, while SW increased the Proteobacteria abundance. Furthermore, the adequacy of feasibly harmful bacteria (such as Vibrio) declined. Interestingly, most metabolic processes were correlated with the GLP and SW groups than the control and galactooligosaccharide (GOS)-treated groups. In addition, the intestinal microbes degrade the GLP with 88.21 % of the molecular weight reduction from 1.36 × 105 g/mol (at 0 h) to 1.6 × 104 g/mol (at 24 h). Therefore, the findings suggest that the SW and GLP have prebiotic potential and could be applied as functional feed additives in aquaculture.
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Affiliation(s)
- Md Akibul Hasan Bakky
- Guangdong Provincial Key Laboratory of Marine Biology, Shantou University, Shantou 515063, China; Institute of Marine Sciences, Shantou University, Shantou 515063, China
| | - Ngoc Tuan Tran
- Guangdong Provincial Key Laboratory of Marine Biology, Shantou University, Shantou 515063, China; Institute of Marine Sciences, Shantou University, Shantou 515063, China
| | - Ming Zhang
- Guangdong Provincial Key Laboratory of Marine Biology, Shantou University, Shantou 515063, China; Institute of Marine Sciences, Shantou University, Shantou 515063, China
| | - Yongsheng Zhang
- Guangdong Provincial Key Laboratory of Marine Biology, Shantou University, Shantou 515063, China; Institute of Marine Sciences, Shantou University, Shantou 515063, China
| | - Huifen Liang
- Guangdong Provincial Key Laboratory of Marine Biology, Shantou University, Shantou 515063, China; Institute of Marine Sciences, Shantou University, Shantou 515063, China
| | - Yilei Wang
- Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture and Rural Affairs, Fisheries College, Jimei University, Xiamen 361021, China
| | - Yueling Zhang
- Guangdong Provincial Key Laboratory of Marine Biology, Shantou University, Shantou 515063, China; Institute of Marine Sciences, Shantou University, Shantou 515063, China
| | - Hongyu Ma
- Guangdong Provincial Key Laboratory of Marine Biology, Shantou University, Shantou 515063, China; Institute of Marine Sciences, Shantou University, Shantou 515063, China
| | - Huaiping Zheng
- Guangdong Provincial Key Laboratory of Marine Biology, Shantou University, Shantou 515063, China; Institute of Marine Sciences, Shantou University, Shantou 515063, China
| | - Shengkang Li
- Guangdong Provincial Key Laboratory of Marine Biology, Shantou University, Shantou 515063, China; Institute of Marine Sciences, Shantou University, Shantou 515063, China.
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Bakky MAH, Tran NT, Zhang Y, Hu H, Lin H, Zhang M, Liang H, Zhang Y, Li S. Effects of dietary supplementation of Gracilaria lemaneiformis-derived sulfated polysaccharides on the growth, antioxidant capacity, and innate immunity of rabbitfish (Siganus canaliculatus). FISH & SHELLFISH IMMUNOLOGY 2023; 139:108933. [PMID: 37419435 DOI: 10.1016/j.fsi.2023.108933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 06/23/2023] [Accepted: 07/03/2023] [Indexed: 07/09/2023]
Abstract
The dietary supplementation of red seaweed-derived polysaccharides has been shown to be beneficial to fish and shellfish aquaculture. However, the function of red seaweed (Gracilaria lemaneiformis)-extracted polysaccharide (GLP) on the health status of rabbitfish (Siganus canaliculatus) is still unknown. This study explored the influences of GLP on growth performance, antioxidant activity, and immunity of rabbitfish. Herein, the fish were fed commercial pelleted feed incorporated with the diverse amount of GLP: 0 (control), 0.10 (GLP0.10), and 0.15 g kg-1 (GLP0.15) for 60 days. The results demonstrated that dietary GLP0.15 significantly elevated FBW and WG, while feed utilization efficiency improved (reduced feed conversion ratio and increased protein efficiency ratio) upon GLP0.10 treatment, regarding the control (P < 0.05). Also, dietary administration of GLP0.15 suggestively improved the serum acid phosphatase and lysozyme activity as well as hepatic total antioxidant capacity, catalase, and superoxide dismutase activity. In contrast, GLP0.15decreased the serum alkaline phosphatase, aspartate aminotransferase, alanine aminotransferase, and malonaldehyde activity when compared to the control (P<0.05). Moreover, the lipase (36.08 and 16.46 U/mgprot in GLP0.10 and GLP0.15, respectively) and amylase (0.43 and 0.23 U/mgprot in GLP0.10 and GLP0.15, respectively) activity recorded the maximum values than the control (8.61 and 0.13 U/mgprot, respectively).Further, the intestinal morphometry was developed (such as increased villus length, width, and area) in the fish fed with a GLP-supplemented diet compared to the control. The KEGG pathway analysis unveiled that several differentially expressed genes (DEGs) in control vs. GLP0.10 and control vs. GLP0.15 were associated with metabolic or immune-associated pathways like antigen processing and presentation, phagosome, complement and coagulation cascades, and platelet activation. The DEGs, namely C3, f5, fgb, MHC1, and cfb, were evaluated in control vs. GLP0.10 and C3 and MHC1 in control vs. GLP0.15, suggesting their possible contributions to GLP-regulated immunity. Additionally, the cumulative mortality of rabbitfish after the Vibrio parahaemolyticus challenge was lower in both GLP0.10 (8.88%) and GLP0.15 (11.11%) than in control (33.33%) (P<0.05). Thus, these findings direct the potential use of GLP as an immunostimulant and growth promoter in rabbitfish aquaculture.
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Affiliation(s)
- Md Akibul Hasan Bakky
- Guangdong Provincial Key Laboratory of Marine Biology, Shantou University, Shantou, 515063, China; Institute of Marine Sciences, Shantou University, Shantou, 515063, China
| | - Ngoc Tuan Tran
- Guangdong Provincial Key Laboratory of Marine Biology, Shantou University, Shantou, 515063, China; Institute of Marine Sciences, Shantou University, Shantou, 515063, China
| | - Yongsheng Zhang
- Guangdong Provincial Key Laboratory of Marine Biology, Shantou University, Shantou, 515063, China; Institute of Marine Sciences, Shantou University, Shantou, 515063, China
| | - Hang Hu
- Guangdong Provincial Key Laboratory of Marine Biology, Shantou University, Shantou, 515063, China; Institute of Marine Sciences, Shantou University, Shantou, 515063, China
| | - Haitian Lin
- Guangdong Provincial Key Laboratory of Marine Biology, Shantou University, Shantou, 515063, China; Institute of Marine Sciences, Shantou University, Shantou, 515063, China
| | - Ming Zhang
- Guangdong Provincial Key Laboratory of Marine Biology, Shantou University, Shantou, 515063, China; Institute of Marine Sciences, Shantou University, Shantou, 515063, China
| | - Huifen Liang
- Guangdong Provincial Key Laboratory of Marine Biology, Shantou University, Shantou, 515063, China; Institute of Marine Sciences, Shantou University, Shantou, 515063, China
| | - Yueling Zhang
- Guangdong Provincial Key Laboratory of Marine Biology, Shantou University, Shantou, 515063, China; Institute of Marine Sciences, Shantou University, Shantou, 515063, China
| | - Shengkang Li
- Guangdong Provincial Key Laboratory of Marine Biology, Shantou University, Shantou, 515063, China; Institute of Marine Sciences, Shantou University, Shantou, 515063, China.
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10
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The Roles of Polysaccharides in Carp Farming: A Review. Animals (Basel) 2023; 13:ani13020244. [PMID: 36670784 PMCID: PMC9854610 DOI: 10.3390/ani13020244] [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: 09/10/2022] [Revised: 11/17/2022] [Accepted: 11/22/2022] [Indexed: 01/11/2023] Open
Abstract
Carp is an important aquaculture species globally, and the production is expected to increase with the growing market demands. Despite that, disease outbreaks remain a major challenge, impeding the development of sustainable carp farming. Moreover, the application of antibiotics, a common prophylactic agent, can adversely impact public health and the environment. Therefore, polysaccharide has been recognized as a novel prophylactic agent in the health management of carp farming, as well as gaining consumers' confidence in carp farming products. In this review, the definition, sources, and main roles of polysaccharides in improving growth performance, stimulating the immune system, enhancing disease resistance, and alleviating abiotic stresses in carp farming are discussed and summarized. In addition, the use of polysaccharides in combination with other prophylactic agents to improve carp farming production is also highlighted. This review aims to highlight the roles of polysaccharides and provide valuable information on the benefits of polysaccharides in carp farming.
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Harikrishnan R, Devi G, Van Doan H, Gatphayak K, Balasundaram C, El-Haroun E, Soltani M. Immunomulation effect of alginic acid and chitooligosaccharides in silver carp (Hypophthalmichthys molitrix). FISH & SHELLFISH IMMUNOLOGY 2022; 128:592-603. [PMID: 35977648 DOI: 10.1016/j.fsi.2022.08.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 08/02/2022] [Accepted: 08/04/2022] [Indexed: 06/15/2023]
Abstract
Individual and combined efficacy of chitooligosaccharides (COS) and alginic acid (AA) at 1 g, 2 g, and 3 g per kg diet was assessed on growth and disease resistance in silver carp (Hypophthalmichthys molitrix) against Edwardsiella ictaluri. Growth parameters including specific growth rate (SGR), weight gain (WG), and feed conversion rate (FCR) were significant in fish fed 2 g and 3 g kg-1 of COS or AA, and fish fed combined COS + AA at 1, 2 and 3 kg-1 diet. In all groups, the survival rate (SR) was recorded 100%, except in group fed 2 g kg-1 AA diet. All the hematological and biochemical profiles significantly increased in groups fed 2 g and 3 g kg-1 of COS, AA, and COS + AA diets. Lipase and amylase enzyme activities and superoxide dismutase (SOD), malondialdehyde (MDA), glutathione peroxidase (GPx) antioxidant enzyme activities were significantly increased in fish fed 2 g and 3 g kg-1 of COS, AA, and COS + AA diet. Respiratory burst (RB), lysozyme (Lyz), reactive oxygen species (ROS) activities, and immunoglobuline (Ig) level were enhanced significantly in fish fed 2 g kg-1 of COS or COS + AA and all 3 g kg-1 diets, whereas nitric acid (NO) production and serum AP activity were improved in 2 g kg-1 COS + AA and 3 g kg-1 COS or COS + AA diets. Pro-inflammatory cytokine such as IL-8 mRNA transcriptions was significant in 2 g kg-1 COS + AA diet and all 3 g kg-1 diet. The IL-10 anti-inflammatory cytokine mRNA transcriptions were significant in 3 g kg-1 COS or COS + AA diets. This study was confirmed that H. molitrix fed with 3 g kg-1 COS or COS + AA diets were better activity when compared to other diet.
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Affiliation(s)
- Ramasamy Harikrishnan
- Department of Zoology, Pachaiyappa's College for Men, Kanchipuram, 631 501, Tamil Nadu, India
| | - Gunapathy Devi
- Department of Zoology, Nehru Memorial College, Puthanampatti, 621 007, Tamil Nadu, India
| | - Hien Van Doan
- Department of Animal and Aquatic Sciences, Faculty of Agriculture, Chiang Mai University, Chiang Mai, 50200, Thailand; Innovative Agriculture Research Center, Faculty of Agriculture, Chiang Mai University, Thailand.
| | - Kesinee Gatphayak
- Department of Animal and Aquatic Sciences, Faculty of Agriculture, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Chellam Balasundaram
- Department of Herbal and Environmental Science, Tamil University, Thanjavur, 613 005, Tamil Nadu, India
| | - Ehab El-Haroun
- Fish Nutrition Research Laboratory, Animal Production Department, Faculty of Agriculture, Cairo University, Egypt
| | - Mehdi Soltani
- Department of Aquatic Animal Health, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran; Centre for Sustainable Aquatic Ecosystems, Harry Butler Institute, Murdoch University, WA, Australia
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12
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Polysaccharides from tropical green seaweed Chaetomorpha antennina induces non-specific immune responses and improves antioxidative activities in common carp (Cyprinus carpio) leukocyte culture cell line. ALGAL RES 2022. [DOI: 10.1016/j.algal.2022.102872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Silva-Brito F, Cardoso A, Machado M, Ramos-Pinto L, Hinzmann M, Abreu H, Costas B, Magnoni L. Dietary supplementation with Gracilaria gracilis by-products modulates the immune status and oxidative stress response of gilthead seabream (Sparus aurata) stimulated with Photobacterium damselae subsp. piscicida. FISH & SHELLFISH IMMUNOLOGY 2022; 126:164-177. [PMID: 35623544 DOI: 10.1016/j.fsi.2022.05.028] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 04/10/2022] [Accepted: 05/16/2022] [Indexed: 06/15/2023]
Abstract
This study evaluated the effects of agar waste (AW) dietary supplementation, obtained from the seaweed Gracilaria gracilis cultivated under two different spectral lights, neutral (NT) and blue (BL), on haematological parameters, inflammatory response, and antioxidant biomarkers of gilthead seabream (Sparus aurata). Three diets were prepared: i) a basal diet (CTR), ii) a diet supplemented with 2.5% NT, and iii) a diet supplemented with 2.5% BL. After 15 days of feeding, fish were injected with PBS (placebo) or inactivated Photobacterium damselae subsp. piscicida (stimulated) and sampled at 4 h and 24 h post-stimulus. Results indicated that fish fed NT and BL supplemented diets had lower Ht value and mean corpuscular volume (MCV) than fish fed the CTR diet, regardless of the stimulus and the sampling time. No differences in mean corpuscular haemoglobin (MCH) were found between fish fed the different diets, while the mean corpuscular haemoglobin concentration (MCHC) increased in fish fed AW supplemented diets compared to fish fed the CTR diet, regardless of the stimulus and the sampling time. In response to inflammation, fish fed the NT diet displayed higher neutrophils count in blood when compared to the CTR group, regardless of the stimulus and sampling time. Thrombocyte count was higher in fish fed NT and BL diets than in the CTR group, especially in the stimulated fish (Diet*injection (D*I), P = 0.004). An increase in plasma protease activity was detected in fish fed NT or BL diets in both placebo and stimulated fish regardless of the sampling time. Hepatic catalase activity was higher in fish fed the NT and BL than in the CTR group, particularly in the stimulated fish (D*I, P < 0.001). In addition, both stimulated and placebo fish that received the BL diet showed an increase in hepatic GR activity compared to the CTR group, regardless of the sampling time. Dietary supplementation with AW by-products obtained from G. gracilis cultured under NT and BL conditions showed to improve the inflammatory and antioxidant mechanisms in gilthead seabream in response to a UV-killed bacterial stimulus, having valuable applications for the sustainable use of seaweed toward improving the health and welfare of cultured fish.
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Affiliation(s)
- Francisca Silva-Brito
- CIIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4450-208, Matosinhos, Portugal; ICBAS - Institute of Biomedical Sciences of Abel Salazar, University of Porto, Rua de Jorge Viterbo Ferreira, 225, 4050-313, Porto, Portugal.
| | | | - Marina Machado
- CIIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4450-208, Matosinhos, Portugal
| | - Lourenço Ramos-Pinto
- CIIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4450-208, Matosinhos, Portugal
| | - Mariana Hinzmann
- CIIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4450-208, Matosinhos, Portugal
| | - Helena Abreu
- ALGAplus - Produção e Comercialização de Algas e seus Derivados, Rua do Mar s/n, 3830-165, Ílhavo, Portugal
| | - Benjamín Costas
- CIIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4450-208, Matosinhos, Portugal; ICBAS - Institute of Biomedical Sciences of Abel Salazar, University of Porto, Rua de Jorge Viterbo Ferreira, 225, 4050-313, Porto, Portugal
| | - Leonardo Magnoni
- CIIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4450-208, Matosinhos, Portugal
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14
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Harikrishnan R, Devi G, Doan HV, Tapingkae W, Balasundaram C, Arockiaraj J, Ringø E. Changes in immune genes expression, immune response, digestive enzymes -antioxidant status, and growth of catla (Catla catla) fed with Astragalus polysaccharides against edwardsiellosis disease. FISH & SHELLFISH IMMUNOLOGY 2022; 121:418-436. [PMID: 35051563 DOI: 10.1016/j.fsi.2022.01.022] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 12/12/2021] [Accepted: 01/15/2022] [Indexed: 06/14/2023]
Abstract
The effect of four level of Astragalus polysaccharides (APs) supplementation diets, (CD: control diet and three experiment diet (E), EA: 100 mg kg-1 APs; EB: 200 mg kg-1 APs; EC: 300 mg kg-1 APs) on growth, changes in haemato-biochemical parameters and metabolic-digestive enzymes, enhancement of antioxidant activity, innate-adaptive immune response, and cytokine gene expression were studied in catla (Catla catla) against Edwardsiella tarda. The healthy and challenged groups fed the CD displayed no mortality, while fish fed EA or EC revealed 10% mortality, but the mortality was only 5% in diet EB. Fish fed diet EB and EC revealed significantly better growth rates and high RBC count during the experimental period. Albumin and globulin levels were significant improved when fish were fed the diet EB and EC from weeks 6-8. The superoxide dismutase (SOD) was significant ameliorated by EB feeding from weeks 4-8. In contrast, serum myeloperoxidase (MPO), catalase (CAT), malondialdehyde (MDA)/lipid peroxidation (LPO), glutathione peroxidase (GPx), respiratory burst activity (RBA), bactericidal action (BCA), serum lysozyme activity (SLA), nitric oxide synthase (NOS), head kidney leukocytes response proliferation (HKLP), hemolytic action (HLA), hydrogen peroxides (H2O2), and immunoglobulin (Ig) were significantly improved from week 6-8. Groups fed the APs enriched diets had significant ameliorated interleukin (IL)-1β and interferon (IFN)-γ mRNA expression after 6 and 8 weeks of feeding. However, IL-10 and major histocompatibility complex (MHC)-1 mRNA expressions were significant enhanced in catla fed all APs diets on week 8. APs enriched diets revealed significant improved tumor necrosis factor (TNF)-α and TNF receptor-associated factor-6 (TRAF6) mRNA expression on week 4, but toll-like receptor-2 (TLR2) and TLR4 mRNA expression were significant enhanced by diet EB and EC after weeks 6 and 8. Similarly, the lysozyme (Lyz)-C and Lyz-G mRNA levels in the head kidney (HK) increased by APs feeding on weeks 6 and 8, whereas the EB diet, the expression of nucleotide binding oligomerization domain-1 (NOD1) was significantly improved on weeks 6 and 8, but NOD2 mRNA expression was only significant enhanced after 8 weeks of diet EB. By feeding healthy catla and E. tarda challenged fish fed diet EB, resulted in significantly increased growth, haemato-biochemical indices, metabolic-digestive enzymes, antioxidant activities, innate-adaptive immune responses, and cytokine gene expression mainly between 6 and 8 weeks.
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Affiliation(s)
- Ramasamy Harikrishnan
- Department of Zoology, Pachaiyappa's College for Men, Kanchipuram, 631 501, Tamil Nadu, India.
| | - Gunapathy Devi
- Department of Zoology, Nehru Memorial College, Puthanampatti, 621 007, Tamil Nadu, India
| | - Hien Van Doan
- Department of Animal and Aquatic Sciences, Faculty of Agriculture, Chiang Mai University, Chiang Mai, 50200, Thailand; Innoviative Agriculture Research Centre, Faculty of Agriculture, Chiang Mai University, Chiang Mai, 50200, Thailand.
| | - Wanaporn Tapingkae
- Department of Animal and Aquatic Sciences, Faculty of Agriculture, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Chellam Balasundaram
- Department of Herbal and Environmental Science, Tamil University, Thanjavur, 613 005, Tamil Nadu, India
| | - Jesu Arockiaraj
- Foundation for Aquaculture Innovations and Technology Transfer (FAITT), Thoraipakkam, 600 097, Chennai, Tamil Nadu, India; Department of Biotechnology, College of Science and Humanities, SRM Institute of Science and Technology, Kattankulathur, 603 203, Chennai, Tamil Nadu, India
| | - Einar Ringø
- Norwegian College of Fishery Science, Faculty of Biosciences, Fisheries and Economics, UiT, The Arctic University of Norway, Tromsø, 9037, Norway
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15
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Harikrishnan R, Devi G, Van Doan H, Vijay S, Balasundaram C, Ringø E, Hoseinifar SH, Jaturasithaf S. Dietary plant pigment on blood-digestive physiology, antioxidant-immune response, and inflammatory gene transcriptional regulation in spotted snakehead (Channa punctata) infected with Pseudomonas aeruginosa. FISH & SHELLFISH IMMUNOLOGY 2022; 120:716-736. [PMID: 34968713 DOI: 10.1016/j.fsi.2021.12.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 12/18/2021] [Accepted: 12/20/2021] [Indexed: 06/14/2023]
Abstract
The current study addressed to investigate the effect of lycopene (LYC) on blood physiology, digestive-antioxidant enzyme activity, specific-nonspecific immune response, and inflammatory gene transcriptional regulation (cytokines, heat shock proteins, vitellogenins) in spotted snakehead (Channa punctata) against Pseudomonas aeruginosa. In unchallenged and challenged fish treated with 200 mg LYC enriched diet the growth performance and digestive-antioxidant enzymes increased after 30 days, whereas with inclusion of 100 or 400 mg LYC in the diets, the increase manifested on or after 45 days. No mortality in fish treated with any LYC diet against P. aeruginosa was revealed. In the unchallenged and challenged fish the phagocytic (PC) activity in head kidney (HK) and spleen were significantly enhanced when fed the control diet or other LYC diets, whereas the respiratory burst (RB) activity and nitric oxide (NO) production significantly increased when fed the 200 mg diet for 45 and 60 days. Similarly, the lysozyme (Lyz) activity in the HK and spleen, and total Ig content in serum were significantly higher in both groups fed the 200 mg LYC diet for 15, 45, and 60 days. Heat shock protein (Hsp 70) was significantly improved in the uninfected group fed the 200 mg LYC diet for 45 and 60 days, but Hsp27 did not significantly change among the experimental groups at any time points. TNF-α and IL-6 mRNA pro-inflammatory cytokine expression significantly increased in both groups fed the 200 mg LYC diet after 45 and 60 days, while the IL-12 mRNA expression was moderate in both groups fed the same diet for 60 days. The IL-10 did not significant mRNA expression between groups at any sampling. The iNOS and NF-κB mRNA expression was pointedly high in both groups fed the 200 mg LYC diet on day 45 and 60. Vitellogenin A (VgA) mRNA was significantly higher in the uninfected fish fed the 100 and 200 mg LYC diets for 45 and 60 days, but VgB did not reveal significant difference between the treatment groups at any time points. The present results suggest that supplementation of LYC at 200 mg significantly modulate the blood physiology, digestive-antioxidant enzymes, specific-nonspecific immune parameters, and cytokines, Hsp, and vitellogenins in spotted snakehead against P. aeruginosa.
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Affiliation(s)
- Ramasamy Harikrishnan
- Department of Zoology, Pachaiyappa's College for Men, Kanchipuram, 631 501, Tamil Nadu, India
| | - Gunapathy Devi
- Department of Zoology, Nehru Memorial College, Puthanampatti, 621 007, Tamil Nadu, India
| | - Hien Van Doan
- Department of Animal and Aquatic Sciences, Faculty of Agriculture, Chiang Mai University, Chiang Mai, 50200, Thailand; Science and Technology Research Institute, Chiang Mai University, 239 Huay Keaw Rd, Suthep, Muang, Chiang Mai, 50200, Thailand.
| | - S Vijay
- Department of Biotechnology, Bharath College of Science and Management, Thanjavur, 613-005, Tamil Nadu, India
| | - Chellam Balasundaram
- Department of Herbal and Environmental Science, Tamil University, Thanjavur, 613 005, Tamil Nadu, India
| | - Einar Ringø
- Norwegian College of Fishery Science, Faculty of Biosciences, Fisheries and Economics, UiT, The Arctic University of Norway, Tromsø, 9037, Norway
| | - Seyed Hossein Hoseinifar
- Department of Fisheries, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
| | - Sanchai Jaturasithaf
- Science and Technology Research Institute, Chiang Mai University, 239 Huay Keaw Rd, Suthep, Muang, Chiang Mai, 50200, Thailand
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16
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Harikrishnan R, Devi G, Van Doan H, Jawahar S, Balasundaram C, Saravanan K, Arockiaraj J, Soltani M, Jaturasitha S. Study on antioxidant potential, immunological response, and inflammatory cytokines induction of glycyrrhizic acid (GA) in silver carp against vibriosis. FISH & SHELLFISH IMMUNOLOGY 2021; 119:193-208. [PMID: 34601139 DOI: 10.1016/j.fsi.2021.09.040] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Revised: 09/28/2021] [Accepted: 09/28/2021] [Indexed: 06/13/2023]
Abstract
Effect of dietary with 100, 200, and 300 mg kg-1 glycyrrhizic acid (GA) on growth enhancer, blood physiology, digestive-antioxidant enzyme ability, innate-adaptive defense, and inflammatory cytokines induction was studied in silver carp, Hypophthalmichthys molitrix against vibriosis caused by Vibrio alginolyticus. Significant weight gain (WG), specific growth rate (SGR), and 100% survival rate (SR) was attained non-infected health (NiH) fish fed in control or all GA diets on 30, 45, and 60 days. Both NiH and V. alginolyticus challenged (VaC) fish treated with 200 mg GA diet significantly (P < 0.05) exhibited an enhancement in leucocytes value on 30, 45, and 60 days. Albumin (AB) or total proteins (TP) levels were significantly (P < 0.05) better in both groups fed 200 GA on 45 and 60 days. Malondialdehyde (MDA) and superoxide dismutase (SOD) activities were also substantial (P < 0.05) in both groups fed 200 mg GA on days 30, 45, and 60; whereas glutathione peroxidase (GPx) and catalase (CAT) activities were significantly (P < 0.05) better in both groups received 200 mg GA on days 45 and 60. Phagocytic (PC) and lysozyme (Lyz) activities significantly enhanced in both groups fed 200 or 300 mg GA on 45 and 60 days. Respiratory burst (RB), reactive oxygen species (ROS) and immunoglobulin (Ig) production significantly (P < 0.05) increased in both groups administered 200 or 300 mg GA. Growth hormone (GH) mRNA was up regulated in 200 mg GA trial on 45 days and in 200 or 300 mg GA treatments on 60 days. The IL-8 cytokine mRNA expression was up-regulated in both groups 200 and 300 mg GA on days 45 and 60, whereas TNF-α mRNA expression was increased in 200 mg GA. In addition, IL-10 cytokine mRNA expression was up regulated in 200 mg GA on 45 days whereas it was increased in both 200 mg and 300 mg GA trial on 60 days. The present study revealed that feeding fish 200 mg GA per kg diet demonstrated a better growth, digestive-antioxidant activity, innate-adaptive defense, and inflammatory cytokines induction than lower or higher dosage of GA in H. molitrix against V. alginolyticus.
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Affiliation(s)
- Ramasamy Harikrishnan
- Department of Zoology, Pachaiyappa's College for Men, Kanchipuram, 631 501, Tamil Nadu, India.
| | - Gunapathy Devi
- Department of Zoology, Nehru Memorial College, Puthanampatti, 621 007, Tamil Nadu, India
| | - Hien Van Doan
- Department of Animal and Aquatic Sciences, Faculty of Agriculture, Chiang Mai University, Chiang Mai, 50200, Thailand; Science and Technology Research Institute, Chiang Mai University, 239 Huay Keaw Rd., Suthep, Muang, Chiang Mai, 50200, Thailand.
| | - Sundaram Jawahar
- Department of Biotechnology, Bharath College of Science and Management, Thanjavur, 613-005, Tamil Nadu, India
| | - Chellam Balasundaram
- Department of Herbal and Environmental Science, Tamil University, Thanjavur, 613 005, Tamil Nadu, India
| | | | - Jesu Arockiaraj
- SRM Research Institute, SRM Institute of Science and Technology, Kattankulathur, 603 203, Chennai, Tamil Nadu, India; Department of Biotechnology, College of Science and Humanities, SRM Institute of Science and Technology, Kattankulathur, 603 203, Chennai, Tamil Nadu, India
| | - Mehdi Soltani
- Department of Aquatic Animal Health, Faculty of Veterinary Medicine, University, Tehran, Iran; Centre for Sustainable Aquatic Ecosystems, Harry Butler Institute, Murdoch University, WA, Australia
| | - Sanchai Jaturasitha
- Science and Technology Research Institute, Chiang Mai University, 239 Huay Keaw Rd., Suthep, Muang, Chiang Mai, 50200, Thailand
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17
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Harikrishnan R, Devi G, Balasundaram C, Van Doan H, Jaturasitha S, Saravanan K, Ringø E. Impact of cinnamaldehyde on innate immunity and immune gene expression in Channa striatus against Aphanomyces invadans. FISH & SHELLFISH IMMUNOLOGY 2021; 117:1-16. [PMID: 34274424 DOI: 10.1016/j.fsi.2021.07.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 07/05/2021] [Accepted: 07/15/2021] [Indexed: 06/13/2023]
Abstract
The effect of cinnamaldehyde (CM) enriched diet on immunity and cytokine gene expression in Channa striatus against Aphanomyces invadans is reported. C. striatus was uniformly divided into eight groups (n = 25 fish each) and fed with formulated diets with 0, 5, 10, and 15 mg kg-1 CM enriched diet. In healthy and infected groups fed with 5 mg kg-1 diet the leukocytes count increased significantly after 4th week; with 10 mg kg-1 CM diet the increase manifested after 6th week, but with 15 mg kg-1 not even after 8th week. In both groups, 5 mg kg-1 CM diet resulted in a significant increase in the serum total protein, albumin, and globulin levels after 4th week, whereas with other diets this effect was observed only after 6th week. Similarly, with any enriched diet the lysozyme activity increased significantly, but with 15 mg kg-1 CM diet only after 6th week. In both groups the complement activity and lymphocyte production increased significantly when fed with 5 mg kg-1 CM diet after 4th week while with other enriched diets only after 6th week. The phagocytic activity increased significantly in both groups fed with 5 mg kg-1 CM diet after 6th week, whereas the SOD activity increased after 4th week. The IgM production increased significantly in both groups fed with 5 mg kg-1 CM diet after 2nd week, while with 5 and 10 mg kg-1 CM diet after 4th week. In both groups, the expression of CXCR3α was significant on 4th week when fed with 10 mg kg-1 CM diet, while in the healthy group fed with 15 mg kg-1 CM diet the expression manifested earlier than 4th week. However, when fed with 10 and 15 mg kg-1 CM diets the increase was observed on 6th week; whereas, the expression of MHC-I reached the maximum on 6th week with any enriched diet. The results indicate that in C. striatus the innate immunity and expression of cytokine and immune related genes were significantly modulated when fed with 5 mg kg-1 CM diet on 4th week against A. invadans.
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Affiliation(s)
- Ramasamy Harikrishnan
- Department of Zoology, Pachaiyappa's College for Men, Kanchipuram, 631 501, Tamil Nadu, India.
| | - Gunapathy Devi
- Department of Zoology, Nehru Memorial College, Puthanampatti, 621 007, Tamil Nadu, India
| | - Chellam Balasundaram
- Department of Herbal and Environmental Science, Tamil University, Thanjavur, 613 005, Tamil Nadu, India
| | - Hien Van Doan
- Department of Animal and Aquatic Sciences, Faculty of Agriculture, Chiang Mai University, Chiang Mai, 50200, Thailand; Science and Technology Research Institute, Chiang Mai University, 239 Huay Keaw Rd., Suthep, Muang, Chiang Mai, 50200, Thailand.
| | - Sanchai Jaturasitha
- Department of Animal and Aquatic Sciences, Faculty of Agriculture, Chiang Mai University, Chiang Mai, 50200, Thailand; Science and Technology Research Institute, Chiang Mai University, 239 Huay Keaw Rd., Suthep, Muang, Chiang Mai, 50200, Thailand
| | | | - Einar Ringø
- Norwegian College of Fishery Science, Faculty of Bioscience, Fisheries and Economics, UiT The Arctic University of Norway, Tromsø, Norway
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Thépot V, Campbell AH, Paul NA, Rimmer MA. Seaweed dietary supplements enhance the innate immune response of the mottled rabbitfish, Siganus fuscescens. FISH & SHELLFISH IMMUNOLOGY 2021; 113:176-184. [PMID: 33823246 DOI: 10.1016/j.fsi.2021.03.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 03/24/2021] [Accepted: 03/29/2021] [Indexed: 06/12/2023]
Abstract
Disease is one of the major bottlenecks for aquaculture development, costing the industry in excess of US $6 billion each year. The increase in pressure to phase out some traditional approaches to disease control (e.g. antibiotics) is pushing farmers to search for alternatives to treat and prevent disease outbreaks, which do not have detrimental consequences (e.g. antibiotic resistance). We tested the effects of eleven seaweed species and four established fish immunostimulants on the innate immune response (cellular and humoral immunity) of the rabbitfish Siganus fuscescens. All supplements including different seaweeds from the three groups (Chlorophyta, Phaeophyta and Rhodophyta) were included in the fish pellet at 3% (by weight) and had variably positive effects across the four innate immune parameters we measured compared to control fish. Diets supplemented with the red seaweed Asparagopsis taxiformis and the brown seaweed Dictyota intermedia led to the largest boosts in humoral and cellular innate immune defences, including particularly significant increases in haemolytic activity. Diets supplemented with Ulva fasciata also led to promising positive effects on the fish innate immune responses. We conclude that dietary seaweed supplements can boost the immune response of S. fuscescens and thus the top three species highlighted in this study should be further investigated for this emerging aquaculture species and other fish species.
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Affiliation(s)
- Valentin Thépot
- School of Science, Technology and Engineering, The University of the Sunshine Coast, Sippy Downs, QLD, 4556, Australia.
| | - Alexandra H Campbell
- School of Health and Behavioural Sciences, The University of the Sunshine Coast, Sippy Downs, QLD, 4556, Australia
| | - Nicholas A Paul
- School of Science, Technology and Engineering, The University of the Sunshine Coast, Sippy Downs, QLD, 4556, Australia
| | - Michael A Rimmer
- School of Science, Technology and Engineering, The University of the Sunshine Coast, Sippy Downs, QLD, 4556, Australia
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19
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Cabral EM, Oliveira M, Mondala JRM, Curtin J, Tiwari BK, Garcia-Vaquero M. Antimicrobials from Seaweeds for Food Applications. Mar Drugs 2021; 19:md19040211. [PMID: 33920329 PMCID: PMC8070350 DOI: 10.3390/md19040211] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 04/07/2021] [Accepted: 04/08/2021] [Indexed: 12/28/2022] Open
Abstract
The exponential growth of emerging multidrug-resistant microorganisms, including foodborne pathogens affecting the shelf-life and quality of foods, has recently increased the needs of the food industry to search for novel, natural and eco-friendly antimicrobial agents. Macroalgae are a bio-diverse group distributed worldwide, known to produce multiple compounds of diverse chemical nature, different to those produced by terrestrial plants. These novel compounds have shown promising health benefits when incorporated into foods, including antimicrobial properties. This review aims to provide an overview of the general methods and novel compounds with antimicrobial properties recently isolated and characterized from macroalgae, emphasizing the molecular pathways of their antimicrobial mechanisms of action. The current scientific evidence on the use of macroalgae or macroalgal extracts to increase the shelf-life of foods and prevent the development of foodborne pathogens in real food products and their influence on the sensory attributes of multiple foods (i.e., meat, dairy, beverages, fish and bakery products) will also be discussed, together with the main challenges and future trends of the use of marine natural products as antimicrobials.
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Affiliation(s)
- Eduarda M. Cabral
- Teagasc, Food Research Centre, Ashtown, 15 Dublin, Ireland; (E.M.C.); (B.K.T.)
| | - Márcia Oliveira
- Department of Food Hygiene and Technology and Institute of Food Science and Technology, University of León, 24071 León, Spain;
| | - Julie R. M. Mondala
- School of Food Science & Environmental Health, College of Sciences & Health, Technological University Dublin-City Campus, 7 Dublin, Ireland; (J.R.M.M.); (J.C.)
| | - James Curtin
- School of Food Science & Environmental Health, College of Sciences & Health, Technological University Dublin-City Campus, 7 Dublin, Ireland; (J.R.M.M.); (J.C.)
| | - Brijesh K. Tiwari
- Teagasc, Food Research Centre, Ashtown, 15 Dublin, Ireland; (E.M.C.); (B.K.T.)
| | - Marco Garcia-Vaquero
- School of Agriculture and Food Science, University College Dublin, Belfield, 4 Dublin, Ireland
- Correspondence:
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20
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Vazirzadeh A, Marhamati A, Rabiee R, Faggio C. Immunomodulation, antioxidant enhancement and immune genes up-regulation in rainbow trout (Oncorhynchus mykiss) fed on seaweeds included diets. FISH & SHELLFISH IMMUNOLOGY 2020; 106:852-858. [PMID: 32871250 DOI: 10.1016/j.fsi.2020.08.048] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 08/25/2020] [Accepted: 08/27/2020] [Indexed: 06/11/2023]
Abstract
This study investigated the stimulatory effects of dietary inclusion of Gracilariopsis persica (GP), Hypnea flagelliformis (HF) and Sargassum boveanum (SB) on immune indices, antioxidant capability and immune related genes expression of rainbow trout (Oncorhynchus mykiss). Seven iso-nitrogenous and iso-caloric diets with 0, 5 and 10% of each macroalgae were prepared and fed to rainbow trout juveniles for 83 days. Serum lysozyme (Lyz) and respiratory burst activity (NBT) along with activity of superoxide dismutase (SOD), peroxidase (POD) and catalase (CAT) and expression of LyzII, TNFα and IL-1β genes in head kidney samples were determined by days 47 and 83. Our results revealed that dietary inclusion of seaweeds improved fish immune status. Long term feeding of fish on seaweed contained diets (except for GP10) improved serum Lyz activity in comparison to control group. Similarly, extended feeding on GP5 and HF10 and HF10 included diets improved SOD and POD levels, respectively. Genes expression studies revealed that seaweeds contained diets noticeably enhanced expression of LyzII, TNFα and IL-1β in comparison to control fish. However, results revealed that such stimulatory effects were more evident at lower dietary inclusion level and shorter feeding time. In conclusion, the results depicted that dietary inclusion of the seaweeds effectively improved serum immune indices and head kidney antioxidant status and immune related genes expression in a time and dose dependent manner.
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Affiliation(s)
- Arya Vazirzadeh
- Department of Natural Resources and Environmental Engineering, School of Agriculture, Shiraz University, Shiraz, 71441-65186, Iran.
| | - Anahita Marhamati
- Department of Natural Resources and Environmental Engineering, School of Agriculture, Shiraz University, Shiraz, 71441-65186, Iran
| | - Reza Rabiee
- Agriculture and Natural Resources Education and Research Centre of Hormozgan, P.O. Box 79145-1577, Bandar Abbas, Iran
| | - Caterina Faggio
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Italy
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21
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Feng JC, Cai ZL, Zhang XP, Chen YY, Chang XL, Wang XF, Qin CB, Yan X, Ma X, Zhang JX, Nie GX. The Effects of Oral Rehmannia glutinosa Polysaccharide Administration on Immune Responses, Antioxidant Activity and Resistance Against Aeromonas hydrophila in the Common Carp, Cyprinus carpio L. Front Immunol 2020; 11:904. [PMID: 32457762 PMCID: PMC7225328 DOI: 10.3389/fimmu.2020.00904] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Accepted: 04/20/2020] [Indexed: 12/14/2022] Open
Abstract
The effects of the oral administration of Rehmannia glutinosa polysaccharide (RGP-1) on the immunoregulatory properties, antioxidant activity, and resistance against Aeromonas hydrophila in Cyprinus carpio L. were investigated. The purified RGP-1 (250, 500, and 1,000 μg/mL) was co-cultured with the head kidney cells of the common carp. The proliferation and phagocytosis activities of the head kidney cells, and the concentration of nitric oxide (NO) and cytokines in the culture medium were determined. Next, 300 common carps (47.66 ± 0.43 g) were randomly divided into five groups; the two control groups (negative and positive) were administered sterile PBS and the three treatment groups were administered different concentrations of RGP-1 (250, 500, and 1,000 μg/mL) for seven days. Subsequently, the positive and treatment groups were infected with A. hydrophila, and the negative group was administered sterile PBS for 24 h. The concentration of NO, cytokines, lysozyme (LZM), and alkaline phosphatase (AKP) in serum, the total antioxidant capacity (T-AOC), the levels of malonaldehyde (MDA) and glutathione (GSH), and the total activities of superoxide dismutase (T-SOD), catalase (CAT), and glutathione peroxidase (GSH-Px) in the hepatopancreas of the common carp were tested. We observed that RGP-1 could significantly enhance the proliferation and phagocytosis activities (P < 0.05), besides inducing the production of NO, pro-inflammatory cytokines (TNF-α, IL-1β, IL-6, IL-12) and anti-inflammatory cytokines (IL-10, TGF-β) (P < 0.05) in vitro. The in vivo experimental results revealed that RGP-1 significantly enhanced NO production, protein levels of pro-inflammatory cytokines (TNF-α, IL-1β, IL-6, IL-12), LZM and AKP activities, and the antioxidant content (T-AOC, SOD, CAT, GSH, GSH-Px, and MDA) compared to that observed in the negative group prior to A. hydrophila infection (P < 0.05). NO, pro-inflammatory cytokines, LZM and AKP activities were significantly lower than that in the positive group after infection (P < 0.05). However, whether infected or not, the expression of anti-inflammatory cytokines (IL-10, TGF-β) increased significantly in the RGP-1-treated groups (P < 0.05). Therefore, the results suggested that RGP-1 could enhance the non-specific immunity, antioxidant activity and anti-A. hydrophila activity of the common carp, and could be used as a safe and effective feed additive in aquaculture.
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Affiliation(s)
- Jun-Chang Feng
- College of Fisheries, Henan Normal University, Xinxiang, China.,Engineering Technology Research Center of Henan Province for Aquatic Animal Cultivation, Henan Normal University, Xinxiang, China
| | - Zhong-Liang Cai
- College of Fisheries, Henan Normal University, Xinxiang, China
| | - Xuan-Pu Zhang
- School of Life Science, Central China Normal University, Wuhan, China
| | - Yong-Yan Chen
- College of Fisheries, Henan Normal University, Xinxiang, China
| | - Xu-Lu Chang
- College of Fisheries, Henan Normal University, Xinxiang, China.,Engineering Technology Research Center of Henan Province for Aquatic Animal Cultivation, Henan Normal University, Xinxiang, China
| | - Xian-Feng Wang
- College of Fisheries, Henan Normal University, Xinxiang, China
| | - Chao-Bin Qin
- College of Fisheries, Henan Normal University, Xinxiang, China
| | - Xiao Yan
- College of Fisheries, Henan Normal University, Xinxiang, China
| | - Xiao Ma
- College of Fisheries, Henan Normal University, Xinxiang, China
| | - Jian-Xin Zhang
- College of Fisheries, Henan Normal University, Xinxiang, China.,Engineering Technology Research Center of Henan Province for Aquatic Animal Cultivation, Henan Normal University, Xinxiang, China
| | - Guo-Xing Nie
- College of Fisheries, Henan Normal University, Xinxiang, China.,Engineering Technology Research Center of Henan Province for Aquatic Animal Cultivation, Henan Normal University, Xinxiang, China
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22
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Zhao L, Li MY, Su S, Geng TT, Sun H. Hippophae rhamnoides L. polysaccharide enhances antioxidant enzyme activity, cytokine level, and related mRNA expression in intestinal porcine epithelial cells. CANADIAN JOURNAL OF ANIMAL SCIENCE 2020. [DOI: 10.1139/cjas-2019-0134] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Hippophae rhamnoides L. polysaccharide (HRP) has antioxidant and immunomodulatory actions. It has been reported that HRP can reduce the release of reactive oxygen species (ROS). The objective of this study was to investigate the effects of HRP on immunomodulatory and antioxidant activity in intestinal porcine jejunum epithelial (IPEC-J2) cells. Effective conditions of HRP (0, 200, 400, 600, and 800 μg mL−1) were evaluated by pretreatment of IPEC-J2 cells for 24 h. The results showed that pretreatment with 0–600 μg mL−1 of HRP enhanced cell survival rate, while more than 600 μg mL−1 posed a threat to IPEC-J2 cell viability and lowered cell survival rate (p < 0.05). In addition, results revealed that, compared with the control group, the treatment of IPEC-J2 cells with 200–600 μg mL−1 of HRP for 24 h decreased ROS, malondialdehyde, protein carbonyl levels, and cell apoptosis. Meanwhile, the levels of superoxide dismutase, glutathione peroxidase, interleukin-1 beta, interleukin-2, interleukin-6, interleukin-8, tumour necrosis factor-alpha were elevated, and enhanced relative mRNA levels were also shown in the IPEC-J2 cells. Both the contents of immunoglobulin M, immunoglobulin A, and immunoglobulin G elevated with the increases of HRP concentration (200, 400, and 600 μg mL−1), and an increase of catalase relative mRNA levels were also observed in IPEC-J2 cells. Data indicated that 600 μg mL−1 of HRP had a potent protective effect on IPEC-J2 cells. Taken together, these results suggested that HRP was effective in regulating intestinal epithelial cells in piglets.
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Affiliation(s)
- Lei Zhao
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin 130118, People’s Republic of China
- Ministry of Education, Laboratory of Animal Production and Quality Security, Jilin Agricultural University, Changchun, Jilin 130118, People’s Republic of China
- Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, Jilin Agricultural University, Changchun, Jilin 130118, People’s Republic of China
| | - Mu-Yang Li
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin 130118, People’s Republic of China
- Ministry of Education, Laboratory of Animal Production and Quality Security, Jilin Agricultural University, Changchun, Jilin 130118, People’s Republic of China
- Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, Jilin Agricultural University, Changchun, Jilin 130118, People’s Republic of China
| | - Shuai Su
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin 130118, People’s Republic of China
- Ministry of Education, Laboratory of Animal Production and Quality Security, Jilin Agricultural University, Changchun, Jilin 130118, People’s Republic of China
- Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, Jilin Agricultural University, Changchun, Jilin 130118, People’s Republic of China
| | - Ting-Ting Geng
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin 130118, People’s Republic of China
- Ministry of Education, Laboratory of Animal Production and Quality Security, Jilin Agricultural University, Changchun, Jilin 130118, People’s Republic of China
- Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, Jilin Agricultural University, Changchun, Jilin 130118, People’s Republic of China
| | - Hui Sun
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin 130118, People’s Republic of China
- Ministry of Education, Laboratory of Animal Production and Quality Security, Jilin Agricultural University, Changchun, Jilin 130118, People’s Republic of China
- Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, Jilin Agricultural University, Changchun, Jilin 130118, People’s Republic of China
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23
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Wu C, Shan J, Feng J, Wang J, Qin C, Nie G, Ding C. Effects of dietary Radix Rehmanniae Preparata polysaccharides on the growth performance, immune response and disease resistance of Luciobarbus capito. FISH & SHELLFISH IMMUNOLOGY 2019; 89:641-646. [PMID: 30991149 DOI: 10.1016/j.fsi.2019.04.027] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 03/31/2019] [Accepted: 04/10/2019] [Indexed: 06/09/2023]
Abstract
This work explores the effects of dietary Radix Rehmanniae Preparata polysaccharide (RRPP) supplementation on the growth performance, nonspecific immune responses, immune- and growth-related gene expression and disease resistance to Aeromonas hydrophila in Luciobarbus capito. Diets containing five concentrations of 0%, 0.05%, 0.1%, 0.2% and 0.4% RRPP were fed to fish for 60 d. The results indicated that the growth performance significantly increased in the 0.1%, 0.2% and 0.4% RRPP groups compared with that in the control (P < 0.05). The activities of serum lysozyme (LAZ), acid phosphatase (ACP), superoxide dismutase (SOD), alkaline phosphatase (AKP) and total protein (TP) were significantly increased in the appropriate RRPP supplemented groups (P < 0.05). With respect to immune- and growth-related genes, such as interleukin (IL)-1β, IL-8, tumor-necrosis factor (TNF)-α, interferon (IFN)-γ, growth hormone (GH), insulin-like growth factor (IGF)-I and IGF-II, up-regulation were observed in the three organs (kidney, spleen, gut) of the fish fed with RRPP, compared with the control. In contrast, the mRNA expression of IL-10 and transforming-growth factor (TGF)-β were downregulated. After challenge with A. hydrophila, the final survival rate was significantly higher in fish fed the RRPP supplement than that in the control group (P < 0.05). In conclusion, RRPP enhanced the growth performance, immune response and disease resistance of Luciobarbus capito, with the greatest effects at 0.2% RRPP.
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Affiliation(s)
- Chun Wu
- Suqian Institute of Agricultural Sciences, Jiangsu Academy of Agricultural Sciences, Suqian, 223800, China
| | - Jinfeng Shan
- Suqian Institute of Agricultural Sciences, Jiangsu Academy of Agricultural Sciences, Suqian, 223800, China
| | - Junchang Feng
- College of Fisheries, Henan Normal University, Xinxiang, 453007, China
| | - Junli Wang
- College of Life Sciences, Henan Normal University, Xinxiang, 453007, China
| | - Chaobin Qin
- College of Fisheries, Henan Normal University, Xinxiang, 453007, China
| | - Guoxing Nie
- College of Fisheries, Henan Normal University, Xinxiang, 453007, China.
| | - Chenlong Ding
- Suqian Institute of Agricultural Sciences, Jiangsu Academy of Agricultural Sciences, Suqian, 223800, China.
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24
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Shalini KS, Yengkhom O, Subramani PA, Michael RD. Polysaccharide fraction from the Indian mistletoe, Dendrophthoe falcata (L.f.) Ettingsh enhances innate immunity and disease resistance in Oreochromis niloticus (Linn.). FISH & SHELLFISH IMMUNOLOGY 2019; 88:407-414. [PMID: 30853657 DOI: 10.1016/j.fsi.2019.03.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 12/31/2018] [Accepted: 03/04/2019] [Indexed: 06/09/2023]
Abstract
The polysaccharide fraction (PF) isolated from the hemiparasitic mistletoe, Dendrophthoe falcata (L.f.) Ettingsh (DF) leaves was tested for its immunostimulatory properties in Oreochromis niloticus (Linn.). Different groups of experimental fish were fed for 1, 2 or 3 weeks with three different doses [low (0.01%), mid (0.1%), or high (1%)] of D. falcata polysaccharide fraction (DFPF) - supplemented diet. After every feeding regimen, the fish were assessed for non-specific immunological parameters, immune related gene expression and disease protection. The DFPF treated groups showed significant (P < 0.05) enhancement of non-specific immune parameters. Significant (P < 0.05) upregulation of lysozyme and TNF-α gene expression was observed in DFPF treated groups. In pathogen challenge studies using Aeromonas hydrophila, the DFPF treated groups displayed significant (P < 0.05) decrease in percentage mortality and the consequent increase in relative percent survival (RPS). Supplementation of 1% DFPF in the feed for a week conferred the maximum protection against the virulent pathogen challenge, recording a RPS of 100. These results suggest that DFPF has the potential to be used as an immunostimulating feed additive in finfish aquaculture.
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Affiliation(s)
- Konda Subramanian Shalini
- VISTAS Centre for Fish Immunology, School of Life Sciences, Vels Institute of Science, Technology and Advanced Studies, Pallavaram, Chennai, 600117, India
| | - Omita Yengkhom
- VISTAS Centre for Fish Immunology, School of Life Sciences, Vels Institute of Science, Technology and Advanced Studies, Pallavaram, Chennai, 600117, India
| | - Parasuraman Aiya Subramani
- VISTAS Centre for Fish Immunology, School of Life Sciences, Vels Institute of Science, Technology and Advanced Studies, Pallavaram, Chennai, 600117, India
| | - R Dinakaran Michael
- VISTAS Centre for Fish Immunology, School of Life Sciences, Vels Institute of Science, Technology and Advanced Studies, Pallavaram, Chennai, 600117, India.
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25
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Mohan K, Ravichandran S, Muralisankar T, Uthayakumar V, Chandirasekar R, Seedevi P, Abirami RG, Rajan DK. Application of marine-derived polysaccharides as immunostimulants in aquaculture: A review of current knowledge and further perspectives. FISH & SHELLFISH IMMUNOLOGY 2019; 86:1177-1193. [PMID: 30599257 DOI: 10.1016/j.fsi.2018.12.072] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2018] [Revised: 12/20/2018] [Accepted: 12/28/2018] [Indexed: 05/15/2023]
Abstract
The use of antibiotics in the feeds of cultivable aquatic animals has been generally practised to reduce infectious diseases as well as to improve the survival and growth. In recent years, many countries ban to aquatic animals due to the use of large amount of antibiotics and chemotherapies, thus alternative novel strategies are need to promote the growth of aquatic animals and control the pathogens. Dietary supplementation of marine-derived polysaccharides (MDPs) is one of the potential substitutes for antibiotics in aquatic animal feeds. Recently, the use of dietary MDPs in the aquaculture animals has been focused with much interest. In aquaculture, MDPs are used as prebiotic substance which is mostly accepted as a nutritional component for improving the growth performance and health conditions. Hence, present review is a comprehensive and an updated collection of available research reports on different MDPs (alginate, fucoidan, carrageenan, laminarin, ulvan, galactan, agar, chitin and chitosan), route of administration, dosage and applications for improving aqua feeds with emphasis on its effects on growth, biochemical indices, immune response, gut microbiota and disease resistance of aquaculture animals. This review describes the sustainability of global aquaculture production by providing a best alternative to harmful antibiotics, thereby meeting the emerging consumer demand for antibiotic-free aquatic food products.
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Affiliation(s)
- Kannan Mohan
- Centre of Advanced Study in Marine Biology, Faculty of Marine Sciences, Annamalai University, Parangipettai, Tamil Nadu, 608 502, India.
| | - Samuthirapandian Ravichandran
- Centre of Advanced Study in Marine Biology, Faculty of Marine Sciences, Annamalai University, Parangipettai, Tamil Nadu, 608 502, India
| | - Thirunavukkarasu Muralisankar
- Aquatic Ecology Laboratory, Department of Zoology, School of Life Sciences, Bharathiar University, Coimbatore, Tamil Nadu, 641 046, India
| | | | | | - Palaniappan Seedevi
- Department of Environmental Science, Periyar University, Salem, 636011, Tamil Nadu, India
| | - Ramu Ganesan Abirami
- School of Applied Sciences, College of Engineering, Science and Technology (CEST), Fiji National University, 5529, Fiji
| | - Durairaj Karthick Rajan
- Centre of Advanced Study in Marine Biology, Faculty of Marine Sciences, Annamalai University, Parangipettai, Tamil Nadu, 608 502, India
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26
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Yengkhom O, Shalini KS, Subramani PA, Michael RD. Stimulation of non-specific immunity, gene expression, and disease resistance in Nile Tilapia, Oreochromis niloticus (Linnaeus, 1758), by the methanolic extract of the marine macroalga, Caulerpa scalpelliformis. Vet World 2019; 12:271-276. [PMID: 31040570 PMCID: PMC6460875 DOI: 10.14202/vetworld.2019.271-276] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Accepted: 01/11/2019] [Indexed: 01/08/2023] Open
Abstract
Aim The objective of the present study was to test the immunostimulating potential of marine macroalga, Caulerpa scalpelliformis, in terms of non-specific immune responses, gene expression, and disease resistance of Nile tilapia, Oreochromis niloticus (Linnaeus, 1758). Materials and Methods O. niloticus was injected intraperitoneally with three different doses of methanol extract of C. scalpelliformis (CSME) (2 mg/kg, 20 mg/kg, or 200 mg/kg body weight), or MacroGard™ (commercial immunostimulant, positive control, and 20 mg/kg body weight), or distilled water (untreated control). In one set of fish, 5 days post-injection, serum lysozyme, myeloperoxidase, and antiprotease activities were assayed. 24 h after injection, gene expression was analyzed in a separate set of fish. To another set of fish, 1 week post-administration of the products, fish were challenged with lethal dose 50 (LD50) dose of a live virulent pathogen, Aeromonas hydrophila and subsequent resistance to it was noted in terms of cumulative percent mortality. Results CSME increased serum lysozyme, myeloperoxidase, and antiprotease activities. There was an increase in the expression of lysozyme gene in the spleen of treated fish. Mid dose of CSME caused the minimum mortality of 10% (consequent relative percentage survival = 73) which is comparable to that of the positive control. Conclusion CSME is considered to have the potential to be developed into an immunostimulant for finfish aquaculture.
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Affiliation(s)
- Omita Yengkhom
- Centre for Fish Immunology, Vels Institute of Science, Technology and Advanced Studies (VISTAS), Chennai, Tamil Nadu, India
| | - Konda Subramanian Shalini
- Centre for Fish Immunology, Vels Institute of Science, Technology and Advanced Studies (VISTAS), Chennai, Tamil Nadu, India
| | - P A Subramani
- Centre for Fish Immunology, Vels Institute of Science, Technology and Advanced Studies (VISTAS), Chennai, Tamil Nadu, India
| | - R Dinakaran Michael
- Centre for Fish Immunology, Vels Institute of Science, Technology and Advanced Studies (VISTAS), Chennai, Tamil Nadu, India
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27
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Vidhya Hindu S, Chandrasekaran N, Mukherjee A, Thomas J. A review on the impact of seaweed polysaccharide on the growth of probiotic bacteria and its application in aquaculture. AQUACULTURE INTERNATIONAL 2019; 27:227-238. [DOI: 10.1007/s10499-018-0318-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Accepted: 11/05/2018] [Indexed: 10/26/2023]
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28
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Cao S, Zhang P, Zou T, Fei S, Han D, Jin J, Liu H, Yang Y, Zhu X, Xie S. Replacement of fishmeal by spirulina Arthrospira platensis affects growth, immune related-gene expression in gibel carp (Carassius auratus gibelio var. CAS III), and its challenge against Aeromonas hydrophila infection. FISH & SHELLFISH IMMUNOLOGY 2018; 79:265-273. [PMID: 29775741 DOI: 10.1016/j.fsi.2018.05.022] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 05/04/2018] [Accepted: 05/11/2018] [Indexed: 06/08/2023]
Abstract
The present study examined the effect of dietary spirulina, Arthrospira platensis on growth performance, blood physiological indices, immune-related gene expressions and resistance of juvenile gibel carp against Aeromonas hydrophila infection. Four isonitrogenous (360 g kg-1) and isolipidic (90 g kg-1) diets were formulated with containing different levels of spirulina powder of 0 g (SP0, the control diet), 3.38 g (SP3.38), 6.76 g (SP6.76) and 13.52 g (SP13.52) per 100 g diet to replace 0%, 25%, 50% and 100% of fishmeal protein, respectively. And each diet was randomly assigned to triplicate tanks (150-L capacity per each) and each tank was stocked with 22 fish (15.37 ± 0.06 g). Fish were fed one of the tested diets up to satiation twice a day for 46 days. A challenge test was carried out after the feeding trial by injecting Aeromonas hydrophila intraperitoneally for 7 days. The results showed that fish growth, feeding rate in groups SP3.38 and SP6.76 were significantly higher than those of groups SP0 and SP13.52 (P < 0.05). Feed efficiency and protein retention rate had no significant difference among all tested groups. Plasma superoxide dismutase and phagocyte activity of blood leukocytes significantly increased in the spirulina-fed fish groups at 12-h post the bacterial challenge (P < 0.05). Both pre and post challenge test, plasma lysozyme activities in spirulina-fed groups were significantly higher than that in the control group (P < 0.05). Plasma malondialdehyde got the lowest value in the SP13.52 group before and after the challenge test. The transcriptional levels of TLR2 (Toll like receptor 2), myeloid differentiation factor 88 (MyD88), Toll/IL-1 receptor domain-containing adaptor protein (TIRAP), interleukin-1β (IL-1β) and tumor necrosis factor-α1 (TNF-α1) in spleen and kidney significantly increased post the bacterial challenge compared to the pre challenge. And the relative expressions of the immune-related genes of spirulina-fed fish groups were higher than those of the control group before and after the challenge test. The 7-day cumulative survival rate after the bacterial challenge was highest in the SP3.38 group (P < 0.05). The present results indicated that low dietary inclusion of spirulina significantly enhanced the immune response of gibel carp partly through TLR2 pathway and 3.38% of dietary spirulina was recommended for the juveniles based on the growth and immune response.
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Affiliation(s)
- Shenping Cao
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei 430072, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Peiyu Zhang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei 430072, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Tao Zou
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei 430072, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Shuzhan Fei
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei 430072, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Dong Han
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei 430072, PR China
| | - Junyan Jin
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei 430072, PR China
| | - Haokun Liu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei 430072, PR China
| | - Yunxia Yang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei 430072, PR China
| | - Xiaoming Zhu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei 430072, PR China.
| | - Shouqi Xie
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei 430072, PR China
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Gou C, Wang J, Wang Y, Dong W, Shan X, Lou Y, Gao Y. Hericium caput-medusae (Bull.:Fr.) Pers. polysaccharide enhance innate immune response, immune-related genes expression and disease resistance against Aeromonas hydrophila in grass carp (Ctenopharyngodon idella). FISH & SHELLFISH IMMUNOLOGY 2018; 72:604-610. [PMID: 29146446 DOI: 10.1016/j.fsi.2017.11.027] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 10/18/2017] [Accepted: 11/12/2017] [Indexed: 06/07/2023]
Abstract
The objective was to add 0, 400, 800 or 1200 mg/kg of Hericium caput-medusae polysaccharide (HCMP) to the basal diet of grass carp (Ctenopharyngodon idella) and determine effects on humoral innate immunity, expression of immune-related genes and disease resistance. Adding HCMP enhanced (P < 0.05) bactericidal activity at 1, 2 and 3 weeks and also lysozyme activity, complement C3, and SOD activity at 2 and 3 weeks. Supplementing 800 or 1200 mg/kg of HCMP for 2 or 3 weeks increased (P < 0.05) serum concentrations of total protein, albumin and globulin. Two immune-related genes (IL-1β and TNF-α) were up-regulated (P < 0.05) in HCMP supplemented groups given 800 or 1200 mg/kg HCMP after 2 and 3 weeks of feeding. Expression of anti-inflammatory cytokine IL-10 was down-regulated (P < 0.05) after receiving 800 or 1200 mg/kg HCMP for 2 or 3 weeks. Fish fed 800 mg/kg HCMP had maximal disease resistance against Aeromonas hydrophila (65.4%). In conclusion, HCMP enhanced immune response and expression of immune-related genes and increased disease resistance against Aeromonas hydrophila in grass carp, with greatest effects in fish given 800 mg/kg HCMP for 3 weeks.
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Affiliation(s)
- Changlong Gou
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin 130118, China
| | - Jiazhen Wang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin 130118, China
| | - Yuqiong Wang
- Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, Jilin 130102, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wenlong Dong
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin 130118, China
| | - Xiaofeng Shan
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin 130118, China
| | - Yujie Lou
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin 130118, China
| | - Yunhang Gao
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin 130118, China.
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30
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Priyadarshini SK, Subramani PA, Michael RD. Modulation of the innate immune responses in the striped snakehead murrel, Channa striata upon experimental infection with live and heat killed Aeromonas hydrophila. Open Vet J 2017; 7:157-164. [PMID: 28652983 PMCID: PMC5475240 DOI: 10.4314/ovj.v7i2.13] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Accepted: 05/17/2017] [Indexed: 01/25/2023] Open
Abstract
It is well-known that the innate immune mechanisms in fish serve as the first line of defence against wide variety of pathogens. In most of the situations, innate responses get induced and enhanced after the pathogen invasion. It would be interesting to look into the inducibility of various innate immune mechanisms and the level of enhancement after infection with the pathogen. Hence, in the present investigation, modulation of the innate immune responses in the striped snakehead murrel, Channa striata on experimental challenge with either live virulent or heat killed Aeromonas hydrophila at a dose of 1x107 CFU (suspended in 0.2 mL PBS) were measured. Most of the non-specific (both humoral and cellular) immune responses tested were substantially induced or enhanced in both the experimental groups in comparison with the unchallenged control group. Significant increase in the lysozyme, total peroxidase, antiprotease and respiratory burst activities were observed after the pathogen challenge. Thus, most of the innate non-specific immune responses are inducible though they are constitutive of fish immune system exhibiting a basal level of activity even in the absence of pathogen challenge.
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Affiliation(s)
| | - Parasuraman Aiya Subramani
- Centre for Fish Immunology, School of Life Sciences, Vels Institute of Science, Technology and Advanced Studies (VISTAS), VELS University, Chennai – 600117, India
| | - Rajamani Dinakaran Michael
- Centre for Fish Immunology, School of Life Sciences, Vels Institute of Science, Technology and Advanced Studies (VISTAS), VELS University, Chennai – 600117, India
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