Different viruses are abundant in aquatic ecosystems. There has been limited research on the viral communities in the upper reaches of the Yangtze River. Yellow catfish (), an important economic fish that is widely distributed in the upper reaches of the Yangtze River, was selected as the research object.
View Article and Find Full Text PDFFish Shellfish Immunol
December 2024
Largemouth bass ranavirus (LMBRaV), also known as largemouth bass virus (LMBV), is a highly damaging viral pathogen that causes widespread mortality in cultured largemouth bass and poses a significant threat to the farming industry in China. However, there is a paucity of effective preventive methods for this disease by LMBRaV. Research has established that herbal extracts possess antiviral activity, potentially exerting a controlling effect on viruses in aquaculture.
View Article and Find Full Text PDFThe reliability of cellular migration measurement in wound healing assays is frequently undermined by the prevalent methodological instability, i.e., tip-based method.
View Article and Find Full Text PDF, an opportunistic pathogen toward aquatic organisms, was identified as the causative pathogen (isolate WH10) in diseased bronze gudgeon via bacterial isolation, and morphological, physiological, biochemical, and molecular characterization. WH10 exerted its pathogenicity via five virulence genes, including those encoding cytotoxic enterotoxins (act and alt), lipase (lip), a quorum sensing-controlled virulence factor (LuxS), and a Type III secretion system inner membrane component (ascV). WH10 was shown to be sensitive to compound sulfamethoxazoles, cefothiophene, doxycycline, and sulfamethoxazole.
View Article and Find Full Text PDFObjective: Non-alcoholic fatty liver disease (NAFLD) is strongly associated with hyperlipidemia, which is closely related to high levels of sugar and fat. β-sitosterol is a natural product with significant hypolipidemic and cholesterol-lowering effects. However, the underlying mechanism of its action on aquatic products is not completely understood.
View Article and Find Full Text PDFIn recent years, the potent influence of tocotrienol (T3) on diminishing blood glucose and lipid concentrations in both (rats) and (humans) has been established. However, the comprehensive exploration of tocotrienol's hypolipidemic impact and the corresponding mechanisms in aquatic species remains inadequate. In this study, we established a zebrafish model of a type 2 diabetes mellitus (T2DM) model through high-fat diet administration to zebrafish.
View Article and Find Full Text PDFAeromonas jandaei is a gram-negative bacterium commonly found in aquatic environments and can induce illnesses in amphibians, reptiles and aquatic animals. In this study, a strain of bacteria was isolated from the diseased Chinese soft-shell turtle (Pelodiscus sinensis), then named strain JDP-FX. This isolate was identified as A.
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January 2024
Micropterus salmoides rhabdovirus (MSRV) is a significant viral pathogen in largemouth bass aquaculture, causing substantial annual economic losses. However, effective prevention methods remain elusive for various reasons. Medicinal plant extracts have emerged as valuable tools in preventing and managing aquatic animal diseases.
View Article and Find Full Text PDFThis study was to evaluate the potential of a host-associated as a probiotic for hybrid yellow catfish ( × ♂). Diets (B0 to B5) containing 0, 0.90 × 10, 0.
View Article and Find Full Text PDFAn outbreak of a disease with a high mortality rate occurred in a Chinese Softshell Turtle () farm in Hubei Province. This study isolated a highly pathogenic strain (Y271) from diseased . Y271 has hemolysis, containing both Hemolysin BL (, and ), Non-hemolytic enterotoxin, NHE (, and ), and Enterotoxin FM () genes.
View Article and Find Full Text PDFGrass carp reovirus genotype Ⅱ (GCRV Ⅱ) causes a variety of fish hemorrhagic disease, which seriously affects the sustainable development of grass carp aquaculture in China. Rare minnow () is an ideal model fish to study the pathogenesis of GCRV Ⅱ. To investigate the involved molecular responses against the GCRV Ⅱ infection, we performed comparative transcriptomic analysis in the spleen and liver of rare minnow injected with virulent strain DY197 and attenuated strain QJ205.
View Article and Find Full Text PDFThe microbial community structure in aquaculture water plays an important role in the intestinal microbial diversity of aquatic animals. The Chinese soft-shelled turtle (SST) () is an important aquaculture species of high economic value in the Asia-Pacific region. An intuitive understanding of the microbial diversity and abundances of SST aquaculture is crucial for comprehending these ecosystems.
View Article and Find Full Text PDFB-cell lymphoma-2 (BCL-2) superfamily molecules play crucial roles in mitochondrial apoptosis induced by Chinese giant salamander iridovirus (GSIV). As an anti-apoptotic molecule in the BCL-2 family, the molecular mechanism of Bcl-w during GSIV infection remains unknown. In this study, we characterized for the first time an amphibian Bcl-w from Chinese giant salamander Andrias davidianus (AdBcl-w), and its function and regulatory mechanism during GSIV infection were investigated.
View Article and Find Full Text PDFChinese giant salamander iridovirus (GSIV) is the first known and causative viral pathogen in Andrias davidianus. Developing a sensitive, accurate and specific assay to detect GSIV in samples is essential to prevent the further spread of the pathogen. In this study, we established a droplet digital PCR (ddPCR) assay that targeted the mcp gene of GSIV, enabling rapid and quantitative detection of the virus.
View Article and Find Full Text PDFis widespread in aquatic environments and is capable of infecting various aquatic organisms. infection is lethal for Chinese soft-shelled turtles (, CSST). We isolated a gram-negative bacterium from the liver of diseased CSSTs, which was named XC-1908.
View Article and Find Full Text PDFFusion-associated small transmembrane (FAST) proteins can promote cell fusion, alter membrane permeability and trigger apoptosis to promote virus proliferation in orthoreoviruses. However, it is unknown whether FAST proteins perform these functions in aquareoviruses (AqRVs). Non-structural protein 17 (NS17) carried by grass carp reovirus Honghu strain (GCRV-HH196) belongs to the FAST protein family, and we preliminarily explored its relevance to virus infection.
View Article and Find Full Text PDFObjectives: The prevalence of diabetes has increased globally, leading to a significant disease burden and financial cost. Early prediction is crucial to control its prevalence.
Design: A prospective cohort study.
Long-term or excessive oxidative stress can cause serious damage to fish. Squalene can be added to feed as an antioxidant to improve the body constitution of fish. In this study, the antioxidant activity was detected by 2,2-diphenyl-1-acrylhydrazyl (DPPH) test and fluorescent probe (dichloro-dihydro-fluorescein diacetate).
View Article and Find Full Text PDFGrass carp reovirus genotype Ⅱ (GCRV Ⅱ) causes hemorrhagic disease in a variety fish, seriously affecting the aquaculture industry in China. However, the pathogenesis of GCRV Ⅱ is unclear. Rare minnow is an ideal model organism to study the pathogenesis of GCRV Ⅱ.
View Article and Find Full Text PDFFish Shellfish Immunol
June 2023
Major histocompatibility complex class Ⅰ (MHC Ⅰ) molecules play a vital role in adaptive immune systems in vertebrates by presenting antigens to effector T cells. Understanding the expression profiling of MHC Ⅰ molecules in fish is essential for improving our knowledge of the relationship between microbial infection and adaptive immunity. In this study, we conducted a comprehensive analysis of MHC Ⅰ gene characteristics in Carassius auratus, an important freshwater aquaculture fish in China that is susceptible to Cyprinid herpesvirus 2 (CyHV-2) infection.
View Article and Find Full Text PDFBackground: The COVID-19 pandemic brings great pressure to the public health systems. This meta-analysis aimed to compare the clinical outcomes among different virus variants, to clarify their impact on medical resources and to provide evidence for the formulation of epidemic prevention policies.
Methods: A systematic literature search was performed in the PubMed, Embase, and Cochrane Library databases using the key words "Omicron" and "Delta.
Tocotrienols have strong antioxidant properties; however, tocotrienol has not been investigated in detail in aquatic products. In this study, the anti-inflammatory and antioxidant activities of the tocotrienol-rich fraction from rice bran oil and its potential mechanism were verified in a zebrafish CuSO inflammation model. The in vitro antioxidant activity was evaluated using the 2,2-Diphenyl-1-picrylhydrazyl (DPPH) stable radical method.
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