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Hieu DQ, Hang BTB, Lokesh J, Garigliany MM, Huong DTT, Yen DT, Liem PT, Tam BM, Hai DM, Son VN, Phuong NT, Farnir F, Kestemont P. Salinity significantly affects intestinal microbiota and gene expression in striped catfish juveniles. Appl Microbiol Biotechnol 2022; 106:3245-3264. [PMID: 35366085 DOI: 10.1007/s00253-022-11895-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 03/08/2022] [Accepted: 03/19/2022] [Indexed: 12/17/2022]
Abstract
In the present study, juvenile striped catfish (Pangasianodon hypophthalmus), a freshwater fish species, have been chronically exposed to a salinity gradient from freshwater to 20 psu (practical salinity unit) and were sampled at the beginning (D20) and the end (D34) of exposure. The results revealed that the intestinal microbial profile of striped catfish reared in freshwater conditions were dominated by the phyla Bacteroidetes, Firmicutes, Proteobacteria, and Verrucomicrobia. Alpha diversity measures (observed OTUs (operational taxonomic units), Shannon and Faith's PD (phylogenetic diversity)) showed a decreasing pattern as the salinities increased, except for the phylogenetic diversity at D34, which was showing an opposite trend. Furthermore, the beta diversity between groups was significantly different. Vibrio and Akkermansia genera were affected differentially with increasing salinity, the former being increased while the latter was decreased. The genus Sulfurospirillium was found predominantly in fish submitted to salinity treatments. Regarding the host response, the fish intestine likely contributed to osmoregulation by modifying the expression of osmoregulatory genes such as nka1a, nka1b, slc12a1, slc12a2, cftr, and aqp1, especially in fish exposed to 15 and 20 psu. The expression of heat shock proteins (hsp) hsp60, hsp70, and hsp90 was significantly increased in fish reared in 15 and 20 psu. On the other hand, the expression of pattern recognition receptors (PRRs) were inhibited in fish exposed to 20 psu at D20. In conclusion, the fish intestinal microbiota was significantly disrupted in salinities higher than 10 psu and these effects were proportional to the exposure time. In addition, the modifications of intestinal gene expression related to ion exchange and stressful responses may help the fish to adapt hyperosmotic environment. KEY POINTS: • It is the first study to provide detailed information on the gut microbiota of fish using the amplicon sequencing method. • Salinity environment significantly modified the intestinal microbiota of striped catfish. • Intestinal responses may help the fish adapt to hyperosmotic environment.
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Affiliation(s)
- Dang Quang Hieu
- Research Unit in Environmental and Evolutionary Biology, Institute of Life Earth & Environment (ILEE), University of Namur, Namur, Belgium.
| | - Bui Thi Bich Hang
- College of Aquaculture and Fisheries, Can Tho University, Can Tho City, Vietnam
| | - Jep Lokesh
- Université de Pau Et Des Pays de L'Adour, Saint-Pee-sur-Nivelle, E2S UPPA, INRAE, NuMéA, France
| | - Mutien-Marie Garigliany
- Department of Pathology, Faculty of Veterinary Medicine, University of Liège, Liege, Belgium
| | - Do Thi Thanh Huong
- College of Aquaculture and Fisheries, Can Tho University, Can Tho City, Vietnam
| | - Duong Thuy Yen
- College of Aquaculture and Fisheries, Can Tho University, Can Tho City, Vietnam
| | - Pham Thanh Liem
- College of Aquaculture and Fisheries, Can Tho University, Can Tho City, Vietnam
| | - Bui Minh Tam
- College of Aquaculture and Fisheries, Can Tho University, Can Tho City, Vietnam
| | - Dao Minh Hai
- College of Aquaculture and Fisheries, Can Tho University, Can Tho City, Vietnam.,Department of Animal Production, Faculty of Veterinary Medicine, University of Liège, Liege, Belgium
| | - Vo Nam Son
- College of Aquaculture and Fisheries, Can Tho University, Can Tho City, Vietnam
| | - Nguyen Thanh Phuong
- College of Aquaculture and Fisheries, Can Tho University, Can Tho City, Vietnam
| | - Frédéric Farnir
- Department of Animal Production, Faculty of Veterinary Medicine, University of Liège, Liege, Belgium
| | - Patrick Kestemont
- Research Unit in Environmental and Evolutionary Biology, Institute of Life Earth & Environment (ILEE), University of Namur, Namur, Belgium.
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Gao J, Xu G, Xu P. Full-length transcriptomic analysis reveals osmoregulatory mechanisms in Coilia nasus eyes reared under hypotonic and hyperosmotic stress. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 799:149333. [PMID: 34352462 DOI: 10.1016/j.scitotenv.2021.149333] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Revised: 07/24/2021] [Accepted: 07/25/2021] [Indexed: 06/13/2023]
Abstract
In recent years, sea-level rise, caused by global warming, will trigger salinity changes. This will threaten the survival of aquatic animals. Till now, the osmoregulatory mechanism of Coilia nasus eyes has not been yet explored. Oxford Nanopore Technologies (ONT) sequencing was performed in C. nasus eyes during hypotonic and hyperosmotic stress for the first time. 22.5G clean reads and 26,884 full-length non-redundant sequences were generated via ONT sequencing. AS events, APA, TF, and LncRNA were identified. During hypotonic stress, 46 up-regulated DEGs and 28 down-regulated DEGs were identified. During hypertonic stress, 190 up-regulated DEGs and 182 down-regulated DEGs were identified. These DEGs were associated with immune, metabolism, and transport responses. The expression of these DEGs indicated that apoptosis and inflammation were triggered during hypotonic and hyperosmotic stress. To resist hypotonic stress, polyamines metabolism and transport of Na+ and Cl- from inter-cellular to extra-cellular were activated. During hyperosmotic stress, amino acids metabolism and transport of myo-inositol and Na+ from extra-cellular to inter-cellular were activated, while Cl- transport was inhibited. Moreover, different transcript isoforms generated from the same gene performed different expression patterns during hypotonic and hypertonic stress. These findings will be beneficial to understand osmoregulatory mechanism of C. nasus eyes, and can also improve our insights on the adaptation of aquatic animals to environmental changes.
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Affiliation(s)
- Jun Gao
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi, Jiangsu 214081, China
| | - Gangchun Xu
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi, Jiangsu 214081, China; Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, Jiangsu 214081, China.
| | - Pao Xu
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi, Jiangsu 214081, China; Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, Jiangsu 214081, China.
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Su M, Zhang R, Liu N, Zhang J. Modulation of inflammatory response by cortisol in the kidney of spotted scat (Scatophagus argus) in vitro under different osmotic stresses. FISH & SHELLFISH IMMUNOLOGY 2020; 104:46-54. [PMID: 32474084 DOI: 10.1016/j.fsi.2020.05.060] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2019] [Revised: 05/20/2020] [Accepted: 05/23/2020] [Indexed: 06/11/2023]
Abstract
Salinity changes on renal osmoregulation have often been investigated while the immune response of the kidney under osmotic stress is poorly understood in teleosts. Acute stress is generally associated with enhancement of circulating cortisol. The effects of osmotic stress on renal immune response and its regulation by cortisol deserve more attention. In the present study, the effects of exogenous cortisol treatment on the lipopolysaccharide (LPS)-induced immune response were analyzed in renal masses of Scatophagus argus under different osmotic stresses in vitro. mRNA expression of pro-inflammatory cytokines (TNF-α, IL1-β and IL-6) and immune-regulatory related genes (GR and SOCS1) was measured over a short course (15 h). Comprehensive analysis reveals that transcript abundances of pro-inflammatory cytokine genes such as TNF-α, IL-1β, and IL-6 induced by LPS, alone or in the combination of cortisol, are tightly associated with osmoregulation under acute osmotic stress. Our results showed that osmotic challenge could significantly enhance mRNA expression levels of pro-inflammatory cytokines in renal masses in vitro. Based on our analysis, it can be inferred that cortisol suppresses the magnitude of renal inflammatory response and attenuates LPS-induced immune response through GR signaling in the face of challenging environmental conditions.
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Affiliation(s)
- Maoliang Su
- Shenzhen Key Laboratory of Marine Bioresource & Eco-Environmental Science, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, 518060, China; Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Ran Zhang
- Shenzhen Key Laboratory of Marine Bioresource & Eco-Environmental Science, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, 518060, China; Department of Physical and Environmental Sciences, University of Toronto, Toronto, Ontario, Canada
| | - Nanxi Liu
- Shenzhen Key Laboratory of Marine Bioresource & Eco-Environmental Science, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, 518060, China
| | - Junbin Zhang
- Shenzhen Key Laboratory of Marine Bioresource & Eco-Environmental Science, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, 518060, China.
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Interrogation of the Gulf toadfish intestinal proteome response to hypersalinity exposure provides insights into osmoregulatory mechanisms and regulation of carbonate mineral precipitation. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY D-GENOMICS & PROTEOMICS 2018; 27:66-76. [DOI: 10.1016/j.cbd.2018.06.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2018] [Revised: 06/11/2018] [Accepted: 06/18/2018] [Indexed: 12/26/2022]
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Xu C, Li E, Suo Y, Su Y, Lu M, Zhao Q, Qin JG, Chen L. Histological and transcriptomic responses of two immune organs, the spleen and head kidney, in Nile tilapia (Oreochromis niloticus) to long-term hypersaline stress. FISH & SHELLFISH IMMUNOLOGY 2018; 76:48-57. [PMID: 29486352 DOI: 10.1016/j.fsi.2018.02.041] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 02/11/2018] [Accepted: 02/23/2018] [Indexed: 06/08/2023]
Abstract
Hyperosmotic stress can adversely affect fish immunity, but little is known about the histological and transcriptomic responses of immune organs in fish in a hyperosmotic environment. This study evaluated the effects of long-term hypersaline conditions (16‰) on the growth, histology and transcriptomics of the two main immune organs, the spleen and head kidney, in Nile tilapia Oreochromis niloticus relative to those reared in freshwater for eight weeks. No differences in weight gain and specific growth rate were found between fish reared under these two salinities. Hyperosmotic stress induced a congestive or enlarged spleen. Platelet- and coagulation-related gene expression was significantly decreased in tilapia at 16‰. The red cell distribution width and value of the mean corpuscular hemoglobin were significantly greater in fish at 16‰ salinity than in control fish in freshwater. A large volume of melano-macrophages in the spleen and pigment deposition in both the spleen and head kidney were observed in the histological sections in fish at 16‰ salinity. Transmission electron microscopic results showed abnormal macrophages with deposition granules in the spleen and head kidney and more neutrophils in the head kidney of fish at 16‰ than in control fish. In total, 772 and 502 genes were annotated for significantly different expression in the spleen and head kidney, respectively, and corresponded to five and one significantly changed immune system pathways, respectively. The complement pathway in the spleen was significantly down-regulated at 16‰. This study indicates that long-term exposure of Nile tilapia to a hyperosmotic environment can induce splenomegaly, reduce coagulation function, enhance phagocytic activity and down-regulate the complement pathway in the spleen. The spleen is a more sensitive organ for immune responses to chronic ambient salinity stress than the head kidney in Nile tilapia.
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Affiliation(s)
- Chang Xu
- Department of Aquaculture, College of Marine Sciences, Hainan University, Haikou, Hainan 570228, China; School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Erchao Li
- Department of Aquaculture, College of Marine Sciences, Hainan University, Haikou, Hainan 570228, China.
| | - Yantong Suo
- School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Yujie Su
- School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Minghui Lu
- Hainan Dingda Aquaculture Co., Ltd., Wenchang, Hainan 571343, China
| | - Qun Zhao
- Department of Aquaculture, College of Marine Sciences, Hainan University, Haikou, Hainan 570228, China
| | - Jian G Qin
- School of Biological Sciences, Flinders University, Adelaide, SA 5001, Australia
| | - Liqiao Chen
- School of Life Sciences, East China Normal University, Shanghai 200241, China
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Schmitz M, Ziv T, Admon A, Baekelandt S, Mandiki SN, L'Hoir M, Kestemont P. Salinity stress, enhancing basal and induced immune responses in striped catfish Pangasianodon hypophthalmus (Sauvage). J Proteomics 2017; 167:12-24. [DOI: 10.1016/j.jprot.2017.08.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 08/02/2017] [Accepted: 08/03/2017] [Indexed: 12/12/2022]
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Schmitz M, Baekelandt S, Bequet S, Kestemont P. Chronic hyperosmotic stress inhibits renal Toll-Like Receptors expression in striped catfish (Pangasianodon hypophthalmus, Sauvage) exposed or not to bacterial infection. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2017; 73:139-143. [PMID: 28344170 DOI: 10.1016/j.dci.2017.03.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 03/22/2017] [Accepted: 03/22/2017] [Indexed: 06/06/2023]
Abstract
Toll-like Receptors (TLRs) are the first innate receptors in recognizing pathogen-associated molecular patterns. In fish, upregulation of toll-like receptors during infection has been largely demonstrated while the effects of abiotic stressors on their expression remain poorly investigated. In this study, striped catfish were submitted during 20 days to three salinity profiles (freshwater, low saline water, saline water), followed by injection of a bacterial strain of Edwardsiella ictaluri. The expression of TLRs 1, 3, 4, 5, 7, 9, 19, 21, and 22 was measured in kidney at different time points in non infected and infected striped catfish. Infection induced overexpression of TLRs 1, 3, 4, 5, 7, 21 and 22. With elevated salinity, the expression of all TLRs, except TLR5, was severely decreased, particularly after bacterial infection. The TLRs responsiveness of striped catfish facing bacterial disease and salinity stress and possible consequences on striped catfish immune response's efficiency are discussed.
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Affiliation(s)
- Mélodie Schmitz
- University of Namur, Research Unit in Environmental and Evolutionary Biology, Namur, Belgium.
| | - Sébastien Baekelandt
- University of Namur, Research Unit in Environmental and Evolutionary Biology, Namur, Belgium
| | - Sandrine Bequet
- University of Namur, Research Unit in Environmental and Evolutionary Biology, Namur, Belgium
| | - Patrick Kestemont
- University of Namur, Research Unit in Environmental and Evolutionary Biology, Namur, Belgium
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Zuo R, Hou S, Wu F, Song J, Zhang W, Zhao C, Chang Y. Higher dietary protein increases growth performance, anti-oxidative enzymes activity and transcription of heat shock protein 70 in the juvenile sea urchin ( Strongylocentrotus intermedius ) under a heat stress. AQUACULTURE AND FISHERIES 2017. [DOI: 10.1016/j.aaf.2017.01.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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