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García Beltrán JM, Esteban MÁ. Nature-identical compounds as feed additives in aquaculture. FISH & SHELLFISH IMMUNOLOGY 2022; 123:409-416. [PMID: 35331881 DOI: 10.1016/j.fsi.2022.03.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 03/11/2022] [Accepted: 03/15/2022] [Indexed: 06/14/2023]
Abstract
Aquaculture sustainable development is necessary since it is categorized as the most important source of aquatic products for human consumption and it is expected to keep growing shortly. For this reason, the addition of natural immunostimulants to fish diet to improve fish health and to preserve the environment have great importance in aquaculture. In this sense, new biotechnological tools as nature-identical compounds are now being used as feed additives to strengthen and stimulate the fish immune system to prevent and/or control diseases due to their lesser cost and higher availability than plant compounds. This review aims to present the most recent studies in which nature-identical compounds have been used in the fish diet to establish their possible use in aquaculture. Nature-identical compounds can be considered a promising alternative to be added to fish diets to promote growth performance, manipulate the gut microbiota, and improve the immune and oxidative status of fish as wells as control bacterial infections in this important aquatic industry.
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Affiliation(s)
- José María García Beltrán
- Immunobiology for Aquaculture Group, Department of Cell Biology and Histology, Faculty of Biology, Campus Regional de Excelencia Internacional "Campus Mare Nostrum", University of Murcia, 30100, Murcia, Spain
| | - María Ángeles Esteban
- Immunobiology for Aquaculture Group, Department of Cell Biology and Histology, Faculty of Biology, Campus Regional de Excelencia Internacional "Campus Mare Nostrum", University of Murcia, 30100, Murcia, Spain.
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Gonda K, Kanazawa H, Maeda G, Matayoshi C, Hirose N, Katsumoto Y, Kono K, Takenoshita S. Ingestion of Okinawa Island Vegetables Increases IgA Levels and Prevents the Spread of Influenza RNA Viruses. Nutrients 2021; 13:nu13061773. [PMID: 34067427 PMCID: PMC8224673 DOI: 10.3390/nu13061773] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 05/17/2021] [Accepted: 05/17/2021] [Indexed: 12/12/2022] Open
Abstract
Background: It has been hypothesized that flavonoid ingestion stimulates immunity, promotes health, and prevents human illness. The aim of this analysis was to evaluate the association of the levels of immunoglobulin A (IgA) with the prevention of influenza infections and with the polyphenols contained in Okinawan vegetables. Methods: IgA, immunoglobulin G (IgG), immunoglobulin M (IgM), and soluble interleukin-2 receptor (sIL-2R) levels were measured in 44 outpatients who regularly ingested vegetables grown on Okinawa Island (200–300 g/day for ≥ 300 days/year) with no history of influenza infection and in 73 patients who ingested the vegetables irregularly or not at all with a history of influenza infection. Results: The patients who regularly ate Okinawan vegetables had higher IgA, IgG, and IgM levels than those who did not. On the other hand, patients who did not consume Okinawan vegetables and had influenza had lower IgA, IgG, and IgM levels. In addition, the IgA and IgG levels showed significant positive correlations with the sIL-2R levels in both groups. Conclusions: It may be beneficial to eat vegetables abundant in polyphenols every day. Secretory IgA antibodies are an important part of the immune defense against viral diseases. People who ingest Okinawan vegetables have high IgA levels and might be more likely to develop immunity against influenza RNA viruses.
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Affiliation(s)
- Kenji Gonda
- Department of Medicine, Daido Central Hospital, 1-1-37, Asato, Nah City 902-0067, Okinawa, Japan; (H.K.); (C.M.)
- Department of Gastrointestinal Tract Surgery, Fukushima Medical University, 1, Hikarigaoka, Fukushima City 960-1295, Fukushima, Japan;
- Fukushima Medical University, 1, Hikarigaoka, Fukushima City, Fukushima 960-1295, Japan;
- Correspondence: ; Tel.: +81-98-869-0005
| | - Hideto Kanazawa
- Department of Medicine, Daido Central Hospital, 1-1-37, Asato, Nah City 902-0067, Okinawa, Japan; (H.K.); (C.M.)
| | - Goki Maeda
- Department of Regional Agricultural System Section, Okinawa Prefectural Agricultural Research Center, 820, Makabe, Itoman City 901-0336, Okinawa, Japan;
| | - Chisa Matayoshi
- Department of Medicine, Daido Central Hospital, 1-1-37, Asato, Nah City 902-0067, Okinawa, Japan; (H.K.); (C.M.)
| | - Naoto Hirose
- Department of Research and Development section, Okinawa Industrial Technology Center, 12-2, Suzaki, Uruma City 904-2234, Okinawa, Japan;
| | - Yukiteru Katsumoto
- Department of Faculty of Science, Fukuoka University, 8-19-1, Nanakuma, Jonan City 814-0180, Fukuoka, Japan;
| | - Koji Kono
- Department of Gastrointestinal Tract Surgery, Fukushima Medical University, 1, Hikarigaoka, Fukushima City 960-1295, Fukushima, Japan;
| | - Seiichi Takenoshita
- Fukushima Medical University, 1, Hikarigaoka, Fukushima City, Fukushima 960-1295, Japan;
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