scholarly journals Stromal Cells, Macrophages and Lymphoid Cells in the Head-kidney of Sea Bass (Dicentrarchus labrax L.). An Ultrastructural Study.

1991 ◽  
Vol 54 (3) ◽  
pp. 299-309 ◽  
Author(s):  
J. MESEGUER ◽  
M. A. ESTEBAN ◽  
B. AGULLEIRO
Keyword(s):  
Ultrastructural Study ◽  
Stromal Cells ◽  
Dicentrarchus Labrax ◽  
Head Kidney ◽  
Sea Bass ◽  
Lymphoid Cells

Granulopoiesis in the head-kidney of the sea bass (Dicentrarchus labrax L.9: An ultrastructural study.

1990 ◽  
Vol 53 (3) ◽  
pp. 287-296 ◽  
Author(s):  
J. MESEGUER ◽  
M. A. ESTEBAN ◽  
A. GARCIA AYALA ◽  
A. LOPEZ RUIZ ◽  
B. AGULLEIRO
Keyword(s):  
Ultrastructural Study ◽  
Dicentrarchus Labrax ◽  
Head Kidney ◽  
Sea Bass

scholarly journals Potential Involvement of lncRNAs in the Modulation of the Transcriptome Response to Nodavirus Challenge in European Sea Bass (Dicentrarchus labrax L.)

Biology ◽  
2020 ◽  
Vol 9 (7) ◽  
pp. 165
Author(s):  
Patricia Pereiro ◽  
Raquel Lama ◽  
Rebeca Moreira ◽  
Valentina Valenzuela-Muñoz ◽  
Cristian Gallardo-Escárate ◽  
...  
Keyword(s):  
Immune Response ◽  
Dicentrarchus Labrax ◽  
Head Kidney ◽  
Enrichment Analysis ◽  
Sea Bass ◽  
Integrated Analysis ◽  
European Sea Bass ◽  
Commercial Species ◽  
Number Of Publications ◽  
Systematic Identification

Long noncoding RNAs (lncRNAs) are being increasingly recognised as key modulators of various biological mechanisms, including the immune response. Although investigations in teleosts are still lagging behind those conducted in mammals, current research indicates that lncRNAs play a pivotal role in the response of fish to a variety of pathogens. During the last several years, interest in lncRNAs has increased considerably, and a small but notable number of publications have reported the modulation of the lncRNA profile in some fish species after pathogen challenge. This study was the first to identify lncRNAs in the commercial species European sea bass. A total of 12,158 potential lncRNAs were detected in the head kidney and brain. We found that some lncRNAs were not common for both tissues, and these lncRNAs were located near coding genes that are primarily involved in tissue-specific processes, reflecting a degree of cellular specialisation in the synthesis of lncRNAs. Moreover, lncRNA modulation was analysed in both tissues at 24 and 72 h after infection with nodavirus. Enrichment analysis of the neighbouring coding genes of the modulated lncRNAs revealed many terms related to the immune response and viral infectivity but also related to the stress response. An integrated analysis of the lncRNAs and coding genes showed a strong correlation between the expression of the lncRNAs and their flanking coding genes. Our study represents the first systematic identification of lncRNAs in European sea bass and provides evidence regarding the involvement of these lncRNAs in the response to nodavirus.

scholarly journals Ceratothoa oestroides Infection in European Sea Bass: Revealing a Long Misunderstood Relationship

2021 ◽  
Vol 12 ◽  
Author(s):  
M. Carla Piazzon ◽  
Ivona Mladineo ◽  
Ron P. Dirks ◽  
Elena Santidrián Yebra-Pimentel ◽  
Jerko Hrabar ◽  
...  
Keyword(s):  
Feeding Strategy ◽  
Dicentrarchus Labrax ◽  
Head Kidney ◽  
Sea Bass ◽  
Growth Delay ◽  
European Sea Bass ◽  
Feeding Site ◽  
Collagen Formation ◽  
North East ◽  
The North

Ceratothoa oestroides (Cymothoidea, Isopoda) is a generalist crustacean parasite that negatively affects the economic sustainability of European sea bass (Dicentrarchus labrax) aquaculture in the North-East Mediterranean. While mortalities are observed in fry and fingerlings, infection in juvenile and adult fish result in approximately 20% growth delay. A transcriptomic analysis (PCR array, RNA-Seq) was performed on organs (tongue, spleen, head kidney, and liver) from infected vs. Ceratothoa-free sea bass fingerlings. Activation of local and systemic immune responses was detected, particularly in the spleen, characterized by the upregulation of cytokines (also in the tongue), a general reshaping of the immunoglobulin (Ig) response and suppression of T-cell mediated responses. Interestingly, starvation and iron transport and metabolism genes were strongly downregulated, suggesting that the parasite feeding strategy is not likely hematophagous. The regulation of genes related to growth impairment and starvation supported the growth delay observed in infected animals. Most differentially expressed (DE) transcripts were exclusive of a specific organ; however, only in the tongue, the difference between infected and uninfected fish was significant. At the attachment/feeding site, the pathways involved in muscle contraction and intercellular junction were the most upregulated, whereas the pathways involved in fibrosis (extracellular matrix organization, collagen formation, and biosynthesis) were downregulated. These results suggest that parasite-inflicted damage is successfully mitigated by the host and characterized by regenerative processes that prevail over the reparative ones.

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