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Shrimp immune system

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https://www.readbyqxmd.com/read/28625840/survival-of-litopenaeus-vannamei-shrimp-fed-on-diets-supplemented-with-dunaliella-sp-is-improved-after-challenges-by-vibrio-parahaemolyticus
#1
Diana Medina Félix, José Antonio López Elías, Ángel Isidro Campa Córdova, Luis Rafael Martínez Córdova, Antonio Luna González, Edilmar Cortes Jacinto, Nolberta Huerta Aldaz, Fernando Cano Mendoza, María Guadalupe Burboa Zazueta
Survival of Litopenaeus vannamei was evaluated during a Vibrio parahaemolyticus infection. This bacteria has been causing significant economic losses in the shrimp industry due to the appearance of early mortality syndrome (EMS), also known as acute hepatopancreatic necrosis disease (AHPND). Control of bacteria in ponds is difficult to achieve with antibiotics due to environmental infections and antibiotic resistance. New methods have been proposed to control and prevent the impact of bacterial infections. The physiological response indicated by plasma biochemical parameters in shrimp can determine their health and stress status...
September 2017: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/28522419/effects-of-stocking-density-of-the-white-shrimp-litopenaeus-vannamei-boone-on-immunities-antioxidant-status-and-resistance-against-vibrio-harveyi-in-a-biofloc-system
#2
Gang Liu, Songming Zhu, Dezhao Liu, Xishan Guo, Zhangying Ye
Determining optimum stocking density of the white shrimp Litopenaeus vannamei (Boone) is a big concern for shrimp farmers. However, few studies have assessed the influence of stocking density on the antioxidant status, immunology, digestive enzyme activities, and growth performance of white shrimp in biofloc systems. In this study, these parameters of white shrimp in a biofloc system were compared at three stocking densities: 300 orgs m(-3) as low stocking density (LD), 400 orgs m(-3) as medium stocking density (MD), and 500 orgs m(-3) as high stocking density (HD)...
August 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28512288/lactic-acid-bacteria-specific-induction-of-cd4-foxp3-t-cells-ameliorates-shrimp-tropomyosin-induced-allergic-response-in-mice-via-suppression-of-mtor-signaling
#3
Linglin Fu, Jixiang Peng, Shushu Zhao, Yan Zhang, Xiurong Su, Yanbo Wang
The beneficial effects of probiotics have been described in allergic sensitization and diseases; however, many questions remain unanswered, such as characteristics of the most effective strains in modulation of allergic responses and how orally administered probiotics affect the systemic immune system. In the present work, oral administration of five lactic acid bacteria strains showed variable effects on protection against the allergic reaction in a mouse model of food allergy to shrimp tropomyosin (ST). The most effective anti-allergic strain, Bacillus coagulans 09...
May 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28501515/shrimp-humoral-responses-against-pathogens-antimicrobial-peptides-and-melanization
#4
Anchalee Tassanakajon, Vichien Rimphanitchayakit, Suwattana Visetnan, Piti Amparyup, Kunlaya Somboonwiwat, Walaiporn Charoensapsri, Sureerat Tang
Diseases have caused tremendous economic losses and become the major problem threatening the sustainable development of shrimp aquaculture. The knowledge of host defense mechanisms against invading pathogens is essential for the implementation of efficient strategies to prevent disease outbreaks. Like other invertebrates, shrimp rely on the innate immune system to defend themselves against a range of microbes by recognizing and destroying them through cellular and humoral immune responses. Detection of microbial pathogens triggers the signal transduction pathways including the NF-κB signaling, Toll and Imd pathways, resulting in the activation of genes involved in host defense responses...
May 10, 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/28481405/hsp70-gene-polymorphisms-in-farmed-marine-shrimp-litopenaeus-vannamei-populations-exposed-to-white-spot-disease-and-infectious-myonecrosis
#5
A L Ferreira, R Maggioni, D Conceição, L M Perazzolo, R L Petersen
Single nucleotide polymorphisms (SNPs) are the best genetic markers for associative studies of the immune system in invertebrates. In the marine shrimp Litopenaeus vannamei, SNPs linked to disease resistance have been reported for some genes, such as hemocyanin, anti-lipopolysaccharide factor, and heat-shock protein 70 (Hsp70). In the present study, polymorphisms in the Hsp70 gene were investigated among three commercial L. vannamei populations bred in Northeast and South Brazil. The first population withstood a strong white spot disease outbreak; the second population suffered extended exposure to infectious myonecrosis; the third population was a high health population, which was experimentally infected with white spot syndrome virus (WSSV) in the present study...
May 4, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28374848/pathogen-recognition-of-a-novel-c-type-lectin-from-marsupenaeus-japonicus-reveals-the-divergent-sugar-binding-specificity-of-qap-motif
#6
Rod Russel R Alenton, Keiichiro Koiwai, Kohei Miyaguchi, Hidehiro Kondo, Ikuo Hirono
C-type lectins (CTLs) are calcium-dependent carbohydrate-binding proteins known to assist the innate immune system as pattern recognition receptors (PRRs). The binding specificity of CTLs lies in the motif of their carbohydrate recognition domain (CRD), the tripeptide motifs EPN and QPD bind to mannose and galactose, respectively. However, variants of these motifs were discovered including a QAP sequence reported in shrimp believed to have the same carbohydrate specificity as QPD. Here, we characterized a novel C-type lectin (MjGCTL) possessing a CRD with a QAP motif...
April 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28336489/current-applications-selection-and-possible-mechanisms-of-actions-of-synbiotics-in-improving-the-growth-and-health-status-in-aquaculture-a-review
#7
REVIEW
Truong-Giang Huynh, Ya-Li Shiu, Thanh-Phuong Nguyen, Quoc-Phu Truong, Jiann-Chu Chen, Chun-Hung Liu
Synbiotics, a conjunction between prebiotics and probiotics, have been used in aquaculture for over 10 years. However, the mechanisms of how synbiotics work as growth and immunity promoters are far from being unraveled. Here, we show that a prebiotic as part of a synbiotic is hydrolyzed to mono- or disaccharides as the sole carbon source with diverse mechanisms, thereby increasing biomass and colonization that is established by specific crosstalk between probiotic bacteria and the surface of intestinal epithelial cells of the host...
May 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28279805/what-vaccination-studies-tell-us-about-immunological-memory-within-the-innate-immune-system-of-cultured-shrimp-and-crayfish
#8
Yu-Hsuan Chang, Ramya Kumar, Tze Hann Ng, Han-Ching Wang
The possibility of immunological memory in invertebrates is a topic that has recently attracted a lot of attention. Today, even vertebrates are known to exhibit innate immune responses that show memory-like properties, and since these responses are triggered by cells that are involved in the innate immune system, it seems that immune specificity and immune memory do not necessarily require the presence of B cells and T cells after all. This kind of immune response has been called "immune priming" or "trained immunity"...
March 7, 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/28216094/fusion-of-flagellin-2-with-bivalent-white-spot-syndrome-virus-vaccine-increases-survival-in-freshwater-shrimp
#9
Hansam Cho, Na Hye Park, Yuyeon Jang, Yong-Dae Gwon, Yeondong Cho, Yoon-Ki Heo, Ki-Hoon Park, Hee-Jung Lee, Tae Jin Choi, Young Bong Kim
Despite large economic losses attributable to white spot syndrome virus (WSSV), an infectious pathogen of penaeid shrimp and other crustaceans worldwide, no efficient vaccines or antiviral agents to control the virus are available at present. Here, we designed and constructed baculovirus-based vaccines delivering genes encoding the WSSV envelope proteins, VP28 and VP19. To enhance the immunogenicity of the baculovirus-based vaccine, we fused a Salmonella typhimurium flagellin 2 (FL2) gene with VP28 or VP19 gene...
March 2017: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/28215741/comparison-of-dietary-inclusion-of-commercial-and-fermented-soybean-meal-on-oxidative-status-and-non-specific-immune-responses-in-white-shrimp-litopenaeus-vannamei
#10
Yu-Hung Lin, Jia-Jinn Mui
This study compared the effects of partial replacement of fish meal (FM) protein with commercial soybean meal (SBM) or Lactobacillus spp. fermented SBM (FSBM) on the oxidative status and non-specific immune responses in white shrimps, Litopenaeus vannamei. A FM-based diet was used as the control. To prepare the two experimental diets, 25% of the FM protein was replaced with SBM and FSBM. Three experimental diets were fed to three groups of shrimps (initial wt: 0.63 ± 0.01 g) in a recirculating rearing system for 12 weeks...
April 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28192256/response-of-gut-health-and-microbiota-to-sulfide-exposure-in-pacific-white-shrimp-litopenaeus-vannamei
#11
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...
April 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28181552/microrna-100-is-involved-in-shrimp-immune-response-to-white-spot-syndrome-virus-wssv-and-vibrio-alginolyticus-infection
#12
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/28167202/two-hemocyte-sub-populations-of-kuruma-shrimp-marsupenaeus-japonicus
#13
Keiichiro Koiwai, Rod Russel R Alenton, Reina Shiomi, Reiko Nozaki, Hidehiro Kondo, Ikuo Hirono
Hemocytes in the circulating hemolymph play important roles for immune responses in shrimp. Previous studies on immune responses by hemocytes in penaeid shrimp were based on gene expression analyses of the entire population of hemocytes and thus may have missed different immune responses of different hemocyte sub-populations. In this study, we separated hemocytes into two sub-populations by Percoll gradient centrifugation, morphological characteristics of each population were then analyzed by May-Giemsa staining, flow cytometry, and FACSCalibur...
February 3, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28027986/alpha-2-macroglobulin-is-a-modulator-of-prophenoloxidase-system-in-pacific-white-shrimp-litopenaeus-vannamai
#14
Sirikwan Ponprateep, Tipachai Vatanavicharn, Chu Fang Lo, Anchalee Tassanakajon, Vichien Rimphanitchayakit
The shrimp multifunctional protein alpha-2-macroglobulin (A2M) is abundantly expressed in plasma, highly up-regulated upon microbial infection and involved in several immune pathways such as blood clotting system, phagocytosis and melanization. Herein, the function of LvA2M from Litopenaeus vannamei on the prophenoloxidase (proPO) system is reported. The recombinant (r)LvA2M produced strongly and specifically inhibited trypsin and the PO activity in shrimp plasma in a dose-dependent manner. Silencing of LvA2M led to an increase in the PO activity in shrimp plasma although the expression of proPO-associated genes, proPO-activating enzyme (PPAE) and prophenoloxidase (proPO) but not the proPO-activating factor (PPAF) was down-regulated...
March 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28027319/scavenger-receptor-c-mediates-phagocytosis-of-white-spot-syndrome-virus-and-restricts-virus-proliferation-in-shrimp
#15
Ming-Chong Yang, Xiu-Zhen Shi, Hui-Ting Yang, Jie-Jie Sun, Ling Xu, Xian-Wei Wang, Xiao-Fan Zhao, Jin-Xing Wang
Scavenger receptors are an important class of pattern recognition receptors that play several important roles in host defense against pathogens. The class C scavenger receptors (SRCs) have only been identified in a few invertebrates, and their role in the immune response against viruses is seldom studied. In this study, we firstly identified an SRC from kuruma shrimp, Marsupenaeus japonicus, designated MjSRC, which was significantly upregulated after white spot syndrome virus (WSSV) challenge at the mRNA and protein levels in hemocytes...
December 2016: PLoS Pathogens
https://www.readbyqxmd.com/read/27986602/long-term-influence-of-cyanobacterial-bloom-on-the-immune-system-of-litopenaeus-vannamei
#16
Jiefeng Gao, Hongliang Zuo, Linwei Yang, Jian-Hui He, Shengwen Niu, Shaoping Weng, Jianguo He, Xiaopeng Xu
Cyanobacteria are ubiquitously distributed in water on the Earth. It has long been known that the cyanobacterial bloom in aquaculture ponds can cause acute and massive deaths of shrimp. However, the long-term and chronic effects of the cyanobacterial bloom on shrimp are still poorly understood. In this study, the immune state of white pacific shrimp, Litopenaeus vannamei, surviving a naturally occurring cyanobacterial bloom was investigated and tracked for 70 d. Compared with the control, the growth of shrimp suffering high concentrations of cyanobacteria was obviously postponed...
February 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/27888131/hsp70-and-hsp90-are-involved-in-shrimp-penaeus-vannamei-tolerance-to-ahpnd-causing-strain-of-vibrio-parahaemolyticus-after-non-lethal-heat-shock
#17
Wisarut Junprung, Premruethai Supungul, Anchalee Tassanakajon
Acute hepatopancreatic necrosis disease (AHPND) caused by Vibrio parahaemolyticus carrying toxin-producing plasmid, has led to severe mortalities in farmed penaeid shrimp throughout Asia. Previous studies reported that a non-lethal heat shock (NLHS) could enhance disease tolerance in aquatic animals. Here, we investigate whether the NLHS could enhance the survival of shrimp Penaeusvannamei upon challenge with an AHPND-causing strain of V. Parahaemolyticus (VPAHPND). Two NLHS conditions, acute and chronic NLHSs, were used...
January 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/27876622/a-novel-c-type-lectin-in-the-black-tiger-shrimp-penaeus-monodon-functions-as-a-pattern-recognition-receptor-by-binding-and-causing-bacterial-agglutination
#18
Ratree Wongpanya, Panjana Sengprasert, Piti Amparyup, Anchalee Tassanakajon
C-type lectins are pattern recognition proteins that play important roles in innate immunity in invertebrates by mediating the recognition of pathogens. In this study, a novel C-type lectin gene, PmCLec, was cloned and characterized from the black tiger shrimp Penaeus monodon. The open reading frame of PmCLec is 657 bp in length. It encodes a predicted protein of 218 amino acids with a calculated molecular mass and an isoelectric point of 24086 Da and 4.67, respectively. Sequence analysis of PmCLec showed similarity to members of the C-type lectin gene superfamily...
January 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/27825820/the-upregulation-of-immune-responses-in-tyrosine-hydroxylase-th-silenced-litopenaeus-vannamei
#19
Ratchaneegorn Mapanao, Chin-Chyuan Chang, Winton Cheng
Catecholamines (CAs) play a crucial role in maintaining physiological and immune homeostasis in invertebrates and vertebrates under stressful conditions. Tyrosine hydroxylase (TH) is the first and rate-limiting enzyme in CA synthesis. To develop an effective CA-related immunological defense system against stress and pathogen infection, various criteria, were evaluated in TH double-stranded (ds) RNA-injected white shrimp, Litopenaeus vannamei. Specifically, the relative transcript quantification of TH, dopamine β-hydroxylase (DBH), crustacean hyperglycemic hormone (CHH), and other immune-related genes; TH activity in the haemolymph; and the estimation of l-dihydroxyphenylalanine (l-DOPA), glucose, and lactate levels in the haemolymph were examined...
February 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/27760162/transcriptome-analysis-of-the-hepatopancreas-in-the-pacific-white-shrimp-litopenaeus-vannamei-under-acute-ammonia-stress
#20
Xia Lu, Jie Kong, Sheng Luan, Ping Dai, Xianhong Meng, Baoxiang Cao, Kun Luo
In the practical farming of Litopenaeus vannamei, the intensive culture system and environmental pollution usually results in a high concentration of ammonia, which usually brings large detrimental effects to shrimp, such as increasing the susceptibility to pathogens, reducing growth, decreasing osmoregulatory capacity, increasing the molting frequency, and even causing high mortality. However, little information is available on the molecular mechanisms of the detrimental effects of ammonia stress in shrimp...
2016: PloS One
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