Responses of prophenoloxidase system and related defence parameters of Litopenaeus vannamei to low salinity

Pan, Luqing; Xie, Ping; Hu, Fawen

doi:10.1007/s11802-010-1711-3

Cited by 19 publications

(3 citation statements)

References 34 publications

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“…As an important part of the pro phenol oxidase activation system, PO is an important immune factor that participates in various immune responses and plays an important role in the nonspecific immune mechanism of Invertebrate [35,36]. In the immune defense system of crustaceans, the body damage caused by the outside world, or a small amount of foreign matter, will activate the enzyme oxidase source activation system and then eliminate or resist external interference through the secretion, encapsulation, phagocytosis, and melanization of cytotoxic [32,37,38]. Therefore, the downregulation of differential expression of PO and serine protease inhibitors indicates that ammonia stress may lead to a decrease in shrimp immune function.…”

Section: Discussionmentioning

confidence: 99%

Effects of Tannin Supplementation in Diet on the Resistance to Ammonia Stress of Pacific White Shrimp Litopenaeus vannamei

Zhang,

Gong,

Chen

et al. 2024

Aquaculture Nutrition

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Tannin (TA), as a natural phenolic compound with strong antioxidant activity, has been used as a feed additive for various animals. In this study, we fed a diet containing 800 mg/kg of tannin on Litopenaeus vannamei for 56 days and then subjected to acute ammonia stress for 48 hr to investigate the effect of dietary tannin on the ammonia stress response of L. vannamei through transcriptomic and metabolomic analysis. The transcriptome analysis indicated that ammonia stress-induced differential expression of 4,185 genes, while tannin-fed shrimp only had 964 differentially expressed genes. Compared with the TA_0 group, 59 pathways were significantly altered, and the pathways of “starch and sucrose metabolism,” “retinol metabolism,” “arachidonic acid metabolism,” “lysosome,” and “amino sugar and nucleotide sugar metabolism” were highly enriched in the TS_0 group. Compared with the TS_0 group, six pathways were significantly altered, and the pathways of “dilated cardiomyopathy,” “complement and coagulation cascades,” “cardiac muscle contraction,” “fructose and mannose metabolism,” “cGMP-PKG signaling pathway,” and “beta-alanine metabolism” were significantly enriched in the TS_800 group. Metabolomic analysis showed that a total of 107 differential metabolites (DMs) were identified in the TS_0 vs. TA_0 group, while 75 DMs were identified in the TS_800 vs. TS_0 group. Based on KEGG annotation, it was found that a large amount of DM was significantly enriched in amino acid metabolism pathways in the TS_0 group, including “arginine and proline metabolism,” “alanine, aspartic acid, and glutamic acid metabolism,” “β-Alanine metabolism and tyrosine metabolism” indicated that tannins affect the metabolism of amino acids. The integration of DEGs and DMs indicates that dietary tannins highly alter the digestion and absorption functions of proteins, as well as the biosynthesis and metabolism of amino acids. This study provides new insights into the adaptation of Pacific white shrimp to ammonia stress and the addition of tannins to feed to enhance immune function.

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Section: Discussionmentioning

confidence: 99%

Effects of Tannin Supplementation in Diet on the Resistance to Ammonia Stress of Pacific White Shrimp Litopenaeus vannamei

Zhang,

Gong,

Chen

et al. 2024

Aquaculture Nutrition

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“…Total blood cell counts (TBC) were performed using a hemocytometer plate under a light microscope (DN-800M, NOVEL, Nanjing, China), according to Pan et al (2010).…”

Section: Total Blood Cell Countsmentioning

confidence: 99%

Effects of different photoperiods and feeding regimes on immune response, oxidative status, and tissue damage in juvenile rainbow trout (Oncorhynchus mykiss)

Shi

et al. 2022

Front. Mar. Sci.

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A three-month culture experiment was conducted to investigate the effects of the feeding regime on liver health, non-specific immunity, and apoptosis of juvenile rainbow trout under constant light conditions. A total of six experimental groups contained two photoperiods [LL (24L:0D) and LD (12L:12D)] and three feeding regimes [R (random feeding), D (mid-dark stage feeding), L (mid-light stage feeding)], defined as R-LL, D-LL, L-LL, R-LD, D-LD, L-LD. The experiment results revealed a significantly higher alanine aminotransferase (ALT) level in the nocturnal feeding group (D-LD) and significantly higher aspartate aminotransferase (AST) in the R-LL and D-LL groups, indicating possible liver damage in these groups. In addition, high serum levels of immunoglobulins M (IgM), complement 3 (C3), and complement 4 (C4) were observed in the LL (compared to LD), R (LL conditions), and D (LD conditions) groups, suggesting that stress may be present in these groups. Meanwhile, under LL, high cytokine genes (tnf-α, il-1β, il-6, and il-8) expression were observed in the liver and intestine of the L group, possibly reflecting a stronger immune response. In the liver, high malondialdehyde (MDA) content was observed in the LL (compared to LD), R (LD conditions), and D (LL conditions) groups, suggesting that these groups were subjected to oxidative damage. Further, higher apoptosis genes (cytc and bcl-2) expression in the liver was detected in the R and D-LD groups. The highest level of hepatic apoptotic cells was also observed in the D-LD group. Taken together, long-term exposure to LL, random feeding, and nocturnal feeding can cause oxidative damage to juvenile rainbow trout, leading to hepatocyte apoptosis, while scheduled diurnal feeding can alleviate the oxidative damage caused by LL.

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“…After hemolymph was collected, 50 μL anticoagulant-hemolymph was mixed with 50 μL of 10% formaldehyde for 30 min at 4 � C. Total haemocyte counts (THC) were measured by Pan et al (2010) [35].…”

Section: Immune Response Parameters Assaymentioning

confidence: 99%

Effects of Yu-Ping-Feng polysaccharides (YPS) on the immune response, intestinal microbiota, disease resistance and growth performance of Litopenaeus vannamei

Fan

Pan

et al. 2020

Fish & Shellfish Immunology

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show abstract

Responses of prophenoloxidase system and related defence parameters of Litopenaeus vannamei to low salinity

Cited by 19 publications

References 34 publications

Effects of Tannin Supplementation in Diet on the Resistance to Ammonia Stress of Pacific White Shrimp Litopenaeus vannamei

Effects of Tannin Supplementation in Diet on the Resistance to Ammonia Stress of Pacific White Shrimp Litopenaeus vannamei

Effects of different photoperiods and feeding regimes on immune response, oxidative status, and tissue damage in juvenile rainbow trout (Oncorhynchus mykiss)

Effects of Yu-Ping-Feng polysaccharides (YPS) on the immune response, intestinal microbiota, disease resistance and growth performance of Litopenaeus vannamei

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