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https://www.readbyqxmd.com/read/28214600/intestine-oxidative-stress-and-immune-response-to-sulfide-stress-in-pacific-white-shrimp-litopenaeus-vannamei
#1
Yafei Duan, Hongbiao Dong, Yun Wang, Hua Li, Qingsong Liu, Yue Zhang, Jiasong Zhang
The effects of sulfide stress on oxidative stress and immune response in intestine of Pacific white shrimp Litopenaeus vannamei were evaluated in the present study. Oxidative stress parameters, immune enzymes activity and immune gene mRNA expression level were detected in intestine of L. vannamei after the exposure of 5.0 mg/L sulfide stress 72 h. The duration of sulfide stress influenced the shrimp survival, and the cumulative mortality rate was 30.0% and 33.3% at 48 h and 72 h respectively. HE staining showed that sulfide stress caused the intestine tissue damage symptoms...
February 15, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28213041/newly-identified-pctoll4-regulates-antimicrobial-peptide-expression-in-intestine-of-red-swamp-crayfish-procambarus-clarkii
#2
Ying Huang, Tingting Li, Min Jin, Shaowu Yin, Kai-Min Hui, Qian Ren
Tolls or Toll-like receptors (TLRs) have an essential role in initiating innate immune responses against pathogens. In this study, a novel Toll gene, PcToll4, was first identified from the intestinal transcriptome of the freshwater crayfish, Procambarus clarkii. The PcToll4 cDNA is 4849bp long with a 3036bp open reading frame that encodes a 1011-amino acid protein. PcToll4 contains a signal peptide, 13 LRR domains, 3 LRR TYP domains, 2 LRR CT domains, an LRR NT domain, a transmembrane region, and a TIR domain...
February 14, 2017: Gene
https://www.readbyqxmd.com/read/28212834/death-associated-protein-1-dap-1-positively-regulates-virus-replication-and-apoptosis-of-hemocytes-in-shrimp-marsupenaeus-japonicus
#3
Wen-Li Xia, Li-Hua Kang, Chang-Bin Liu, Cui-Jie Kang
Death-associated protein 1 (DAP1) is a small proline-rich cytoplasmic protein that functions both in the apoptosis and autophage process of mammalian and in the clinical cancer of human. However, little knowledge is known about the homologue gene of DAP1 and its roles in the physiological process of invertebrates. In this paper, we report a novel function of DAP1 in the antivirus immunity of shrimp. A homologue gene of DAP1 was cloned from Marsupenaeus japonicus and named as Mjdap-1. The full-length of Mjdap-1 was 1761 bp with a 309 bp open reading frame that encoded 102 amino acids...
February 14, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28212821/cloning-and-molecular-characterization-of-the-betaine-aldehyde-dehydrogenase-involved-in-the-biosynthesis-of-glycine-betaine-in-white-shrimp-litopenaeus-vannamei
#4
María F Delgado-Gaytán, Jesús A Rosas-Rodríguez, Gloria Yepiz-Plascencia, Ciria G Figueroa-Soto, Elisa M Valenzuela-Soto
The enzyme betaine aldehyde dehydrogenase (BADH) catalyzes the irreversible oxidation of betaine aldehyde to glycine betaine (GB), a very efficient osmolyte accumulated during osmotic stress. In this study, we determined the nucleotide sequence of the cDNA for the BADH from the white shrimp Litopenaeus vannamei (LvBADH). The cDNA was 1882 bp long, with a complete open reading frame of 1524 bp, encoding 507 amino acids with a predicted molecular mass of 54.15 kDa and a pI of 5.4. The predicted LvBADH amino acid sequence shares a high degree of identity with marine invertebrate BADHs...
February 14, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28210987/antiviral-activity-of-ctn-15-34-a-cathelicidin-derived-eicosapeptide-against-infectious-myonecrosis-virus-in-litopenaeus-vannamei-primary-hemocyte-cultures
#5
P R N Vieira-Girão, C B Falcão, I R C B Rocha, H M R Lucena, F H F Costa, G Rádis-Baptista
The shrimp farming has been converted into a mature aquaculture industry dealing with over millions of metric tonnes of processed commodities. Nevertheless, the global shrimp productions are constantly threatened by disease outbreaks, mainly triggered by rapidly disseminating viruses. Infectious myonecrosis virus (IMNV) is one of these epizootic agents affecting shrimp production in Brazil, of which no treatment exists. Herein, the antiviral activity against IMNV of an eicosapeptide, named Ctn[15-34], derived from a member of the cathelicidin family of antimicrobial peptides, was demonstrated...
February 16, 2017: Food and Environmental Virology
https://www.readbyqxmd.com/read/28209836/draft-genome-sequence-of-a-vibrio-harveyi-strain-associated-with-vibriosis-in-pacific-white-shrimp-litopenaeus-vannamei
#6
Emille Moreno, Marci Parks, Lee J Pinnell, James J Tallman, Jeffrey W Turner
Vibrio harveyi is a Gram-negative bacterium associated with vibriosis in penaeid shrimp. Here, we report the draft genome sequence of a V. harveyi strain isolated from Pacific white shrimp (Litopenaeus vannamei) during a vibriosis outbreak. The availability of this genome will aid future studies of vibriosis in shrimp aquaculture.
February 16, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28207303/growth-of-listeria-monocytogenes-in-thawed-frozen-foods
#7
Ai Kataoka, Hua Wang, Philip H Elliott, Richard C Whiting, Melinda M Hayman
The growth characteristics of Listeria monocytogenes inoculated onto frozen foods (corn, green peas, crabmeat, and shrimp) and thawed by being stored at 4, 8, 12, and 20°C were investigated. The growth parameters, lag-phase duration (LPD) and exponential growth rate (EGR), were determined by using a two-phase linear growth model as a primary model and a square root model for EGR and a quadratic model for LPD as secondary models, based on the growth data. The EGR model predictions were compared with growth rates obtained from the USDA Pathogen Modeling Program, calculated with similar pH, salt percentage, and NaNO2 parameters, at all storage temperatures...
February 16, 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28206711/localization-patterns-of-dopamine-active-transporter-synthesizing-cells-during-development-of-brine-shrimp
#8
Bo Yong Kim, Gyeong Hee Shin, In Soo Lee, Suhng Wook Kim, Ho Seung Kim, Jin Kwan Kim, Seung Gwan Lee
There have been many studies on dopamine active transporter (DAT) in humans and laboratory animals; however, there is a lack of information on DAT in brine shrimp. In this study, we demonstrated the neuronal and nonneuronal characteristics of DAT-synthesizing (DAT(+) cells) during development of brine shrimp. In neuronal cells, the DAT(+) neurons in the central body and lobes of a protocerebrum (PC) controlled the deutocerebrum. The sensory cells of nauplius eyes projected their decussated axons to the PC, and the DAT(+) cells at the posterior region were associated with migration and control of the 10 posterior neurons during the early nauplius stage...
February 16, 2017: Archives of Insect Biochemistry and Physiology
https://www.readbyqxmd.com/read/28205371/integrating-gut-microbiota-immaturity-and-disease-discriminatory-taxa-to-diagnose-the-initiation-and-severity-of-shrimp-disease
#9
Jinbo Xiong, Jinyong Zhu, Wenfang Dai, Chunming Dong, Qiongfen Qiu, Chenghua Li
Increasing evidence has emerged a tight link among the gut microbiota, host age and health status. This osculating interplay impedes the definition of gut microbiome features associated with host health from that in developmental stages. Consequently, gut microbiota-based prediction of health status is promising yet not well established. Here we firstly tracked shrimp gut microbiota (N = 118) over an entire cycle of culture; shrimp either stayed healthy, or progressively transitioned into severe disease. The results showed that the gut microbiota were significantly distinct over shrimp developmental stages, and disease progression...
February 15, 2017: Environmental Microbiology
https://www.readbyqxmd.com/read/28204969/convergent-evolution-of-the-osmoregulation-system-in-decapod-shrimps
#10
Jianbo Yuan, Xiaojun Zhang, Chengzhang Liu, Hu Duan, Fuhua Li, Jianhai Xiang
In adaptating to different aquatic environments, seawater (SW) and freshwater (FW) shrimps have exploited different adaptation strategies, which should generate clusters of genes with different adaptive features. However, little is known about the genetic basis of these physiological adaptations. Thus, in this study, we performed comparative transcriptomics and adaptive evolution analyses on SW and FW shrimps and found that convergent evolution may have happened on osmoregulation system of shrimps. We identified 275 and 234 positively selected genes in SW and FW shrimps, respectively, which enriched in the functions of ion-binding and membrane-bounded organelles...
February 15, 2017: Marine Biotechnology
https://www.readbyqxmd.com/read/28193450/heat-shock-70%C3%A2-kda-protein-cognate-5-involved-in-wssv-toleration-of-litopenaeus-vannamei
#11
Kai Yuan, Feng-Hua Yuan, Hong-Hui He, Hai-Tao Bi, Shao-Ping Weng, Jian-Guo He, Yi-Hong Chen
The expression levels of 97 unigenes encoding heat shock proteins of Litopenaeus vannamei was scanned, and ten of them were significantly induced by white spot syndrome virus (WSSV). Among these genes, heat shock 70 kDa protein cognate 5 (LvHSC70-5) was upregulated to the highest extent and subjected to further studies. Subcellular localization assay revealed that LvHSC70-5 was located in the mitochondria. Aside from WSSV infection, unfolded protein response activation and thermal stress could also upregulate LvHSC70-5...
February 10, 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/28192256/response-of-gut-health-and-microbiota-to-sulfide-exposure-in-pacific-white-shrimp-litopenaeus-vannamei
#12
Yantong Suo, Erchao Li, Tongyu Li, Yongyi Jia, Jian G Qin, Zhimin Gu, Liqiao Chen
Sulfide is a natural and widely distributed toxicant. It can be commonly found on the interface between water and sediment in the aquatic environment. The Pacific white shrimp Litopenaeus vannamei starts life in the benthic zone soon after the mysis stage, an early stage of post larvae. Therefore, L. vannamei is inevitably affected by exposure to sulfide released from pond sediment. This study explored the toxicant effect of different concentrations of sulfide on the intestinal health and microbiota of Pacific white shrimp by monitoring the change of expression of inflammatory, immune related cytokines, and the structure of the intestinal microbiota...
February 10, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28191711/bioinformatic-screening-and-detection-of-allergen-cross-reactive-ige-binding-epitopes
#13
Scott McClain
Protein allergens can be related by cross-reactivity. Allergens that share relevant sequence can cross-react, those lacking similarity in their IgE antibody-binding epitopes do not cross-react. Cross-reactivity is based on shared epitopes which is due to shared sequence and higher level structure (charge and shape). Epitopes can be important in predicting cross-reactivity potential and may provide the potential to establish criteria that identify homology among allergens. Selected allergen's IgE binding epitope sequences were used to determine how the FASTA algorithm could be used to identify a threshold of significance...
February 13, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28190351/insights-into-cryoprotective-roles-of-carrageenan-oligosaccharides-in-peeled-whiteleg-shrimp-litopenaeus-vannamei-during-frozen-storage
#14
Bin Zhang, Hui-Cheng Yang, He Tang, Gui-Juan Hao, Yang-Yang Zhang, Shang-Gui Deng
The cryoprotective effects of carrageenan oligosaccharides on peeled whiteleg shrimp were investigated and compared with sodium pyrophosphate treatment during frozen storage, primarily the interaction mechanisms between oligosaccharides and shrimp myosin. Data revealed significant profitable effects on water-holding capacity and textural variables in oligosaccharide-treated shrimp compared to the control. Chemical analyses showed that these saccharides maintained a higher myofibrillar protein content and Ca2+-ATPase activity in frozen shrimp...
February 13, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28187793/retraction-notice-to-chitosan-tripolyphosphate-cs-tpp-nanoparticles-preparation-characterization-and-application-for-gene-delivery-in-shrimp-acta-tropica-2013-486-493
#15
S Vimal, S Abdul Majeed, G Taju, K S N Nambi, N Sundar Raj, N Madan, M A Farook, T Rajkumar, D Gopinath, A S Sahul Hameed
No abstract text is available yet for this article.
April 2017: Acta Tropica
https://www.readbyqxmd.com/read/28185731/phenolic-endocrine-disrupting-compounds-in-the-pearl-river-estuary-occurrence-bioaccumulation-and-risk-assessment
#16
Panpan Diao, Qi Chen, Rui Wang, Dong Sun, Zhuoping Cai, Hao Wu, Shunshan Duan
Three phenolic endocrine-disrupting compounds, 4-nonylphenol, 4-tert-octylphenol and bisphenol A, were determined in water, sediment and biota (fish, shrimp and mollusk) collected from sites along the Pearl River Estuary, China. The 4-nonylphenol, 4-tert-octylphenol and bisphenol A concentrations ranged from 1.20-3352.86ng/L in the water, <0.17-20.80ng/g dw in the sediment and <1.49-237.12ng/g dw in the biota. The concentrations of 4-nonylphenol were higher than those of 4-tert-octylphenol and bisphenol A in the water, sediment and organisms...
February 6, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28183054/national-estimation-of-seafood-consumption-in-mexico-implications-for-exposure-to-methylmercury-and-polyunsaturated-fatty-acids
#17
Alejandra Cantoral, Carolina Batis, Niladri Basu
BACKGROUND: Seafood is a good source of Omega-3 polyunsaturated fatty acids (ω3-PUFA) but also contains the toxic contaminant methylmercury (MeHg). National estimates of exposure to both compounds through seafood intake in Mexico are not known. The objective of the current study was to describe national seafood consumption habits and to estimate seafood-based exposure to ω3-PUFAs and MeHg. METHODS: We analyzed data from a 24-h dietary recall extracted from the 2012 National Health and Nutrition Survey of Mexico (n = 10,096 subjects aged 1y and older)...
January 26, 2017: Chemosphere
https://www.readbyqxmd.com/read/28181552/microrna-100-is-involved-in-shrimp-immune-response-to-white-spot-syndrome-virus-wssv-and-vibrio-alginolyticus-infection
#18
Zhi Wang, Fei Zhu
In this study, we discovered that shrimp miR-100 was up-regulated at 24 h after WSSV or Vibrio alginolyticus infection, confirming its participation in the innate immune system of shrimp. The anti-miRNA oligonucleotide (AMO-miR-100) was applied to inhibit the expression of miR-100. After AMO-miR-100 treatment, the shrimp was challenged with WSSV or V. alginolyticus. The knockdown of miR-100 expression decreased the mortality of WSSV-infected shrimp from 24 h to 72 h post-infection and enhanced the mortality of V...
February 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28179524/two-white-spot-syndrome-virus-mirnas-target-dorsal-to-promote-virus-infection-in-shrimp-marsupenaeus-japonicas
#19
Qian Ren, Xin Huang, Yalei Cui, Jiejie Sun, Wen Wang, Xiaobo Zhang
In eukaryotes, microRNAs (miRNAs) serve as regulators of many biological processes, including virus infection. A miRNA can generally target diverse genes during virus-host interactions. However, regulation of gene expression by multiple miRNAs has not yet been extensively explored during virus infection. This study found that the Spz-Toll-Dorsal-ALF signaling pathway played a very important role in antiviral immunity in shrimp (Marsupenaeus japonicus) against invasion of white spot syndrome virus (WSSV). Dorsal, the central gene in Toll pathway, was targeted by two viral miRNAs (WSSV-miR-N13 and WSSV-miR-N23) during WSSV infection...
February 8, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28179103/rapid-diagnosis-of-vibrio-owensii-responsible-for-shrimp-acute-hepatopancreatic-necrosis-disease-with-isothermal-recombinase-polymerase-amplification-assay
#20
Liyuan Liu, Luzhi Jiang, Yongxin Yu, Xiaoming Xia, Yingjie Pan, Shuling Yan, Yongjie Wang
A rapid and sensitive AHPND-RPA assay was developed for the specific detection of the AHPND-causing Vibrio owensii. The AHPND-RPA detected as few as 2 copies per reaction in 9.02 ± 0.66 min at 39 °C, and showed 100% positive predictive value and negative predictive value for AHPND diagnosis.
February 5, 2017: Molecular and Cellular Probes
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