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Fish & Shellfish Immunology

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https://www.readbyqxmd.com/read/29162546/evaluation-of-probiotic-bacillus-aerius-b81e-isolated-from-healthy-hybrid-catfish-on-growth-disease-resistance-and-innate-immunity-of-pla-mong-pangasius-bocourti
#1
Ratchanu Meidong, Kulwadee Khotchanalekha, Sompong Doolgindachbaporn, Takahiro Nagasawa, Miki Nakao, Kenji Sakai, Saowanit Tongpim
Infectious diseases have been found to be a major cause of mortality in fish hatcheries. Probiotics have been introduced to replace antibiotics commonly used for treatment of bacterial infection in aquaculture. This study was conducted to isolate, screen, and evaluate the probiotic Bacillus spp. for potential use as a feed supplement to enhance fish growth, disease resistance and innate immunity of Pla-mong Pangasius bocourti. Bacillus aerius strain B81e was selectively isolated from the intestine of healthy catfish and chosen based on its probiotic properties both in vitro and in vivo...
November 18, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29162545/gene-expression-analysis-of-ruditapes-philippinarum-haemocytes-after-experimental-perkinsus-olseni-zoospore-challenge-and-infection-in-the-wild
#2
Abul Farah Md Hasanuzzaman, Juan Andrés Rubiolo, Diego Robledo, Antonio Gómez-Tato, José Antonio Álvarez-Dios, Sergio Fernández-Boo, Asunción Cao, Antonio Villalba, Belén G Pardo, Paulino Martínez
The production of Manila clam (Ruditapes philippinarum) is seriously threatened by the protistan parasite Perkinsus olseni. We characterized and compared gene expression of Manila clam haemocytes in response to P. olseni in a time-course (10 h, 24 h, 8 d) controlled laboratory challenge (LC), representing the first step of infection, and in a more complex infection in the wild (WI), using a validated oligo-microarray containing 11,232 transcripts, mostly annotated. Several immune-genes involved in NIK/NF-kappaB signalling, Toll-like receptor signalling and apoptosis were activated at LC-10 h...
November 18, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29162544/immunostimulation-and-yellow-head-virus-yhv-disease-resistance-induced-by-a-lignin-based-pulping-by-product-in-black-tiger-shrimp-penaeus-monodon-linn
#3
Prapansak Srisapoome, Kaoru Hamano, Isao Tsutsui, Kenji Iiyama
Yellow head virus (YHV) is classified as one of the most serious pathogens causing a harmful disease in many penaeids, especially black tiger shrimp (Penaeus monodon), with high economic loss. To determine a potent and practical prophylactic strategy for controlling this disease, the toxicity of the by-product kraft lignin and its ability to control severe YHV infection were investigated in juvenile black tiger shrimp (15.9 ± 1.2 g body weight). The median lethal dosage at 96 h (96-hrs LD50) of lignin in shrimp was 297 mg/L...
November 18, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29162543/identification-expression-analysis-and-antibacterial-activity-of-nk-lysin-from-common-carp-cyprinus-carpio
#4
Gai Ling Wang, Ming Cheng Wang, Ying Li Liu, Qian Zhang, Chuan Feng Li, Pan Ting Liu, En Zhong Li, Pin Nie, Hai Xia Xie
Natural killer lysin (NK-lysin), produced by cytotoxic T lymphocytes and natural killer cells, is a cationic antimicrobial peptide that has a broad antimicrobial spectrum, including bacteria, viruses, and parasites. Nevertheless, the implication of NK-lysin in the protection against bacterial infection is not aware in common carp. In this study, six different NK-lysin genes (nkl1, nkl2, nkl3, nkl4, nkl5 and nkl6) were identified in the common carp genome. Each of the mature peptides of common carp NK-lysin has six well-conserved cysteine residues, and shares a Saposin B domain, characteristic of saposin-like protein (SALIP) family...
November 18, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29162542/silencing-tyrosine-hydroxylase-retards-depression-of-immunocompetence-of-litopenaeus-vannamei-under-hypothermal-stress
#5
Ratchaneegorn Mapanao, Chin-Chyuan Chang, Winton Cheng, Kuan-Fu Liu
Tyrosine hydroxylase (TH), the first and rate-limiting step in the synthesis of catecholamines, is required in catecholamine synthesis of the neuroendocrine regulatory network against stress in shrimp. The immunocompetence, catecholamine biosynthesis, and carbohydrate metabolites were evaluated in Litopenaeus vannamei received L. vannamei TH (LvTH) double-stranded (ds)RNA, diethyl pyrocarbonate-water, or non-targeted dsRNA for 3 days then transferred from 28 to 20 or 28 °C. The immunocompetence of LvTH-depleted shrimp held at 28 °C was promoted, and those were downregulated under hypothermal stress and revealed higher level than the other two dsRNA treatments...
November 18, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29162541/a-mini-review-on-immune-role-of-chemokines-and-its-receptors-in-snakehead-murrel-channa-striatus
#6
REVIEW
Prasanth Bhatt, Venkatesh Kumaresan, Rajesh Palanisamy, Gayathri Ravichandran, Kanchana Mala, S M Nurul Amin, Aziz Arshad, Fatimah Md Yusoff, Jesu Arockiaraj
Chemokines are ubiquitous cytokine molecules involved in migration of cells during inflammation and normal physiological processes. Though the study on chemokines in mammalian species like humans have been extensively studied, characterization of chemokines in teleost fishes is still in the early stage. The present review provides an overview of chemokines and its receptors in a teleost fish, Channa striatus. C. striatus is an air breathing freshwater carnivore, which has enormous economic importance. This species is affected by an oomycete fungus, Aphanomyces invadans and a Gram negative bacteria Aeromonas hydrophila is known to cause secondary infection...
November 18, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29162540/genomic-analysis-of-nf-%C3%AE%C2%BAb-signaling-pathway-reveals-its-complexity-in-crassostrea-gigas
#7
Mingjia Yu, Jianming Chen, Yongbo Bao, Jun Li
NF-κB signaling pathway is an evolutionarily conserved pathway that plays highly important roles in several developmental, cellular and immune response processes. With the recent release of the draft Pacific oyster (Crassostra gigas) genome sequence, we have sought to identify the various components of the NF-κB signaling pathway in these mollusks and investigate their gene structure. We further constructed phylogenetic trees to establish the evolutionary relationship of the oyster proteins with their homologues in vertebrates and invertebrates using BLASTX and neighbor-joining method...
November 18, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29158205/a-molting-inhibiting-hormone-like-protein-from-pacific-white-shrimp-litopenaeus-vannamei-is-involved-in-immune-responses
#8
Hongliang Zuo, Jia Yuan, Shengwen Niu, Linwei Yang, Shaoping Weng, Jianguo He, Xiaopeng Xu
The molting-inhibiting hormones (MIHs) from the crustacean hyperglycemic hormone (CHH) family are a group of neuropeptides that are implicated in regulation of molting and reproduction in crustaceans. In this study, a novel protein containing a typical crustacean neuropeptide domain was identified from Litopenaeus vannamei. The protein showed high homology with other shrimp MIHs and was then designated as a MIH-like protein (MIHL). Among the detected tissues, the heart expressed the highest level of MIHL. The expression of MIHL could be significantly up-regulated after infection with white spot syndrome virus (WSSV), gram-negative bacterium Vibro parahaemolyticus and gram-positive bacterium Staphylococcus aureus, indicating that MIHL could be involved in immune responses...
November 17, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29108971/hemocytes-of-the-mud-crab-scylla-paramamosain-cytometric-morphological-characterization-and-involvement-in-immune-responses
#9
Yi-Lian Zhou, Wen-Bin Gu, Dan-Dan Tu, Qi-Hui Zhu, Zhong-Kai Zhou, Yu-Yin Chen, Miao-An Shu
Hemocytes play essential roles in the innate immune system of crustaceans. Characterization of hemocytes from estuary mud crab Scylla paramamosain was performed by flow cytometry and morphological studies such as cytochemical staining and electron microscopy. The hemocyte subsets were further separated using a modified Percoll density gradient centrifugation method. Based on the morphological characteristics of the cells, three distinct categories of hemocytes were identified: granulocytes with abundant large granularity representing 5...
November 17, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29155272/oral-immunization-with-recombinant-lactobacillus-casei-expressing-ompai-confers-protection-against-aeromonas-veronii-challenge-in-common-carp-cyprinus-carpio
#10
Dong-Xing Zhang, Yuan-Huan Kang, Long Chen, Shahrood Ahmed Siddiqui, Chun-Feng Wang, Ai-Dong Qian, Xiao-Feng Shan
Aeromonas veronii is a gram-negative pathogen capable of infecting both fish and mammals, including humans, and natural infection in fish results in irreparable damage to the aquaculture industry. Lactic acid bacteria (LAB) have a number of properties that make them attractive candidates as delivery vehicles for presentation to the mucosa sites of compounds with pharmaceutical interest, in particular vaccines. In this study, we generated two recombinant Lactobacillus casei (surface-displayed or secretory) expressing the OmpAI of A...
November 16, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29155031/the-involvement-of-suppressor-of-cytokine-signaling-6-socs6-in-immune-response-of-chinese-mitten-crab-eriocheir-sinensis
#11
Chen Qu, Qingsong Xu, Mengmeng Lu, Feifei Wang, Zhaoqun Liu, Dongyang Liu, Wen Yang, Qilin Yi, Lingling Wang, Linsheng Song
Suppressor of cytokine signaling (SOCS) is a family of cytokine-inducible negative regulators of cytokine signaling and it plays a crucial role in various physiological processes. In the present study, the full-length cDNA of a SOCS (designated as EsSOCS6) was cloned from Chinese mitten crab Eriocheir sinensis. The open reading frame of EsSOCS6 cDNA was of 1266 bp, which encoded a polypeptide of 421 amino acid residues. There were two typically conserved SOCS family domains in EsSOCS6, including a central Src homology 2 (SH2) domain and a C-terminal SOCS box...
November 15, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29155030/transcriptome-analysis-and-discovery-of-genes-involved-in-immune-pathways-from-coelomocytes-of-onchidium-struma-after-bacterial-challenge
#12
Mingming Zhang, Guo Qiao, Qiang Li, De-Hai Xu, Zhitao Qi, Aiming Wang, Mengyao Xu, Jintian Huang
Onchidium struma widely distributes in subtidal and low-tidal zones, which is considered to be an economical species with rich nutrition, a valuable biomonitor for heavy metal pollution and a representative species for evolution from ocean to land. However, there is limited genetic information available for O. struma development. This study compared transcriptomic profiles of coelomocytes from normal and bacteria infected O. struma by Illumina-based paired-end sequencing to explore the molecular immune mechanism of O...
November 15, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29155029/molecular-characterization-and-expression-analysis-of-complement-component-3-in-dojo-loach-misgurnus-anguillicaudatus
#13
Yongsheng Xu, Yongyao Yu, Xiaoting Zhang, Zhenyu Huang, Huili Li, Shuai Dong, Yangzhou Liu, Fen Dong, Zhen Xu
The complement component 3 (C3) is a central component of complement system. All three pathways converge at formation of C3 convertases and share the terminal pathways of membrane attack complex (MAC) formation. In this study, three isoforms of C3 were discovered in Misgurnus anguillicaudatus, named "C3-1", "C3-2" and "C3-3", respectively. The full-length of C3-1 cDNA sequence was firstly identified and analyzed from dojo loach (Misgurnus anguillicaudatus). The Ma-C3-1 cDNA sequence comprised of 4509 bp encoding 1454 amino acids with a putative signal peptide of 20 amino acid residues...
November 15, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29154943/molecular-characterization-and-expression-analysis-of-a-novel-r-spondin-member-rspo2l-in-chinese-tongue-sole-cynoglossus-semilaevis
#14
Min Wei, Wen-Teng Xu, Hai-Long Li, Lei Wang, Yun-Ji Xiu, Ying-Ming Yang, Yang-Zhen Li, Fa-Zhen Zhao, Song-Lin Chen
Numerous studies suggest R-spondins (Rspos) plays a role in mammalian sex development and differentiation by activating WNT signaling pathways. However, Rspos are frequently less reported in teleosts. In this study, a molecular characterization and expression analysis was conducted with a new rspondin member in the Chinese tongue sole, rspondin2-like (rspo2l). The length of rspo2l cDNA is 1251 bp with 732 bp of coding sequence. A qRT-PCR analysis revealed that the transcription of rspo2l was distributed in various tissues, with high transcription levels in the liver, skin, and gills which might indicate a possible role in immunity...
November 14, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29146448/sialic-acid-binding-lectins-sabls-from-solen-grandis-function-as-prrs-ensuring-immune-recognition-and-bacterial-clearance
#15
Xiumei Wei, Dinglong Yang, Huiying Li, Hailin Jiang, Xiangquan Liu, Qin Zhang, Jialong Yang
Sialic acid-binding lectins (SABLs) are ubiquitous ancient molecules with binding properties to N-acetyl or N-glycolyl carbohydrates, and play crucial roles in both adaptive and innate immune responses. In present study, recombinant protein and antibodies of two SABLs from mollusk Solen grandis (SgSABL-1 and SgSABL-2) were prepared to investigate their functions in innate immunity. The recombinant protein of SgSABL-1 (rSgSABL-1) could bind LPS, PGN and β-glucan in vitro, while rSgSABL-2 could only bind PGN rather than LPS and β-glucan...
November 14, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29146450/identification-and-expression-of-complement-component-c8%C3%AE-c8%C3%AE-and-c8%C3%AE-gene-in-half-smooth-tongue-sole-cynoglossus-semilaevis-and-c8%C3%AE-recombinant-protein-antibacterial-activity-analysis
#16
Guang Yang, Yunji Xiu, Yadong Chen, Li Bai, Zhenxia Sha
Complement component C8, which mediates membrane attack complex formation and bacterial lysis, plays important roles in the complement system. The cDNA sequences of the C8α, C8β and C8γ genes were cloned from half-smooth tongue sole (Cynoglossus semilaevis). Full-length cDNA of CsC8α (C8α of C. semilaevis), CsC8β and CsC8γ was 1990, 2219 and 886 bp, respectively, which contained open reading frames of 1797, 1749 and 666 bp, encoding 598, 582 and 221 amino acids, respectively. The deduced proteins of CsC8α, CsC8β and CsC8γ showed the closest amino acid similarity to C8α (73%) of Siniperca chuatsi, C8β (76%) of Oryzias latipes and C8γ (72%) of Takifugu rubripes, respectively...
November 13, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29146449/an-integrated-metabolic-consequence-of-hepatospora-eriocheir-infection-in-the-chinese-mitten-crab-eriocheir-sinensis
#17
Zhengfeng Ding, Jing Pan, Hua Huang, Gongcheng Jiang, Jianqin Chen, Xueshen Zhu, Renlei Wang, Guohua Xu
Despite the economic and evolutionary importance of aquatic host-infecting microsporidian species, at present, limited information has been provided about the microsporidia-host interactions. This study focused on Hepatospora eriocheir, an emerging microsporidian pathogen for the Chinese mitten crab Eriocheir sinensis. Hypertrophy of hepatopancreas cells was a common feature of H. eriocheir infection. More importantly, mitochondria of the hepatopancreas were drawn around the H. eriocheir, most likely to aid the uptake of ATP directly from the host...
November 13, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29146447/in-the-ovary-of-ciona-intestinalis-type-a-immune-related-galectin-and-phenoloxidase-genes-are-differentially-expressed-by-the-follicle-accessory-cells
#18
Daniela Parrinello, Maria Antonietta Sanfratello, Maria Giovanna Parisi, Aiti Vizzini, Matteo Cammarata
Riboprobes (in situ hybridization) and antibodies (immunohistochemistry), previously used to show the upregulation of Ciona intestinalis (Type A) galectins (CiLgals-a, CiLgals-b) and phenoloxidase (CinPO2) immune-related genes, were tested on histological sections of the ovary. The ovarian follicles are composed of oocytes encased by follicular cells (FCs) and test cells (TCs). Results show the transcription upregulation of both CiLgals and CinPO2 genes in the vitellogenic FCs, conversely distinct cytolocalization of the proteins are shown...
November 13, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29146446/hericium-caput-medusae-bull-fr-pers-polysaccharide-enhance-innate-immune-response-immune-related-genes-expression-and-disease-resistance-against-aeromonas-hydrophila-in-grass-carp-ctenopharyngodon-idella
#19
Changlong Gou, Jiazhen Wang, Yuqiong Wang, Wenlong Dong, Xiaofeng Shan, Yujie Lou, Yunhang Gao
The objective was to add 0, 400, 800 or 1200 mg/kg of Hericium caput-medusae polysaccharide (HCMP) to the basal diet of grass carp (Ctenopharyngodon idella) and determine effects on humoral innate immunity, expression of immune-related genes and disease resistance. Adding HCMP enhanced (P < 0.05) bactericidal activity at 1, 2 and 3 weeks and also lysozyme activity, complement C3, and SOD activity at 2 and 3 weeks. Supplementing 800 or 1200 mg/kg of HCMP for 2 or 3 weeks increased (P < 0.05) serum concentrations of total protein, albumin and globulin...
November 13, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29146445/interplay-between-daily-rhythmic-serum-mediated-bacterial-killing-activity-and-immune-defence-factors-in-rainbow-trout-oncorhynchus-mykiss
#20
Carlo C Lazado, Manuel Gesto, Lone Madsen, Alfred Jokumsen
Circadian rhythm is emerging as an important regulator of immune functions. However, there is a paucity of information on the influence of this biological phenomenon in the antimicrobial factors in teleost fish. This study investigated the dynamics and interplay of serum-mediated bacterial killing activity and immune defence factors throughout the light:dark (LD) cycle in rainbow trout (Oncorhynchus mykiss). The juvenile fish came from two different emergence time fractions (i.e., late and early) that were believed to exhibit behavioural and physiological differences...
November 13, 2017: Fish & Shellfish Immunology
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