Pinna nobilis: A big bivalve with big haemocytes?

Matozzo, Valerio; Pagano, Maria; Spinelli, Andrea; Caicci, Federico; Faggio, Caterina

doi:10.1016/j.fsi.2016.06.039

Cited by 62 publications

(27 citation statements)

References 38 publications

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“…Marine bivalve molluscs have complex systems to defence against infection which include humoral factors and cellular mechanism (Faggio, Pagano, Alampi, Vazzana, & Felice, ; Faggio, Tsarpali, & Dailianis, ; Sehonova, Svobodova, Dolezelova, Vosmerova, & Faggio, ). Among the humoral factors involved in the elimination of pathogens, molecules such as antimicrobial peptides, major plasma proteins, lysosomal enzymes, lectins and protease inhibitors can be considered (Matozzo, Pagano, Spinelli, Caicci, & Faggio, ; Soudant et al, ; Tiscar & Mosca, ). The immune cellular response is mediated by haemocytes, which are responsible for phagocytizing and eliminating invasive agents.…”

Section: Discussionmentioning

confidence: 99%

Perkinsus mediterraneus infection induces oxidative stress in the mollusc Mimachlamys varia

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Capó

Tejada

et al. 2019

Journal of Fish Diseases

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Perkinsus mediterraneus is a protozoan parasite that can cause marine mollusc diseases known as perkinsosis being a serious threat for clam cultures worldwide. The aim of the present study was first to determine the Perkinsus species infecting the variegated scallop Mimachlamys varia and then to evaluate the existence of oxidative stress in gills of M. varia according to different degrees of infection. DNA sequencing confirmed that P. mediterraneus was the species infecting M. varia. ROS production was progressively increasing with the degree of infection although the differences were only significant in the high‐infected group. Low degree of infection significantly increased superoxide dismutase (SOD) and glutathione S‐transferase (GST) activities and nitrite levels with respect to the control group. In the high‐infected group, a significant increase was evidenced in all analysed enzymes, catalase, SOD, glutathione reductase and GST. Non‐significant differences in MDA levels were observed between the control and low‐infected groups; however, a significant increase in MDA levels was observed in the high‐infected group. In conclusion, the infection by Perkinsus mediterraneus in M. varia induces oxidative stress and an antioxidant response directly related to the infection degree that can contribute to the pathogenicity of the infection.

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Section: Discussionmentioning

confidence: 99%

Perkinsus mediterraneus infection induces oxidative stress in the mollusc Mimachlamys varia

Box

Capó

Tejada

et al. 2019

Journal of Fish Diseases

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“…In order to verify if algal extracts administered to fish exert cytotoxic effects, 100 isolated hepatocytes of D. labrax (fed diet enriched with algal extract) were measured to verify the viability which was measured by the Trypan blue exclusion method and compared to control group, constituted of cells isolated from control fish (Matozzo et al, 2016). The quality of their lysosomes was evaluated by neutral red retention assay (NR) (which measures the stability of lysosomal membrane).…”

Section: Methodsmentioning

confidence: 99%

Preliminary Study on the In vitro and In vivo Effects of Asparagopsis taxiformis Bioactive Phycoderivates on Teleosts

Marino

Gugliandolo

et al. 2016

Front. Physiol.

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Several compounds from marine organisms have been studied for their potential use in aquaculture. Among the red algae, Asparagopsis taxiformis is considered one of the most promising species for the production of bioactive metabolites with numerous proposed applications. Here, the in vitro antibacterial activity, the easy handling and the absence of adverse effects on marine fish species are reported. Depending on the seasonal period of sampling, ethanol extracts of A. taxiformis exhibited significantly different inhibitory activity against fish pathogenic bacteria. The extract obtained in late spring showed strong antibacterial activity against Aeromonas salmonicida subsp. salmonicida, Vibrio alginolyticus, and V. vulnificus, and moderate activity against Photobacterium damselae subsp. damselae, P. damselae subsp. piscicida, V. harveyi and V. parahaemolyticus. Sea bass and gilthead sea bream were fed with pellets supplied with the alga and algal extracts. The absence of undesired effects on fish was demonstrated. Hematological and biochemical investigations allowed to confirm that the whole alga and its extracts could be proposed for a future application in aquaculture.

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“…In bivalves, Grimm et al [ 15 ], described a case of mycobacteriosis in Atlantic sea scallop Placopecten magellanicus that was characterized by inflammatory nodules; these were most commonly identified macroscopically at the adductor muscle level, but micro- and macroscopic nodules were present in other tissues of at least some infected animals. Moreover, the pen shell Pinna nobilis was found to display two haemocyte types, granular and hyaline, along with aggregates of brown cells filled with melanin and lipofuscin [ 34 ]. Granular immune cells increased in number and dimension upon mycobacterial infection in an attempt to destroy the microorganism, with each granulocyte in the haemocyte phagosome filled with AFB [ 4 ].…”

Section: The Immune System Of Aquatic Invertebrates and Mycobactermentioning

confidence: 99%

Mycobacteriosis in Aquatic Invertebrates: A Review of Its Emergence

2020

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Mycobacteriosis is a chronic bacterial disease reported in aquatic and terrestrial animals, including humans. The disease affects a wide range of cultured and wild organisms worldwide. Mycobacteriosis is well-known in aquatic vertebrates (e.g., finfish, marine mammals), while in the last few years, reports of its presence in aquatic invertebrates have been on the rise, for both freshwater and marine species. The number of cases is likely to increase as a result of increased awareness, surveillance and availability of diagnostic methods. Domestication of wild aquatic species and the intensification of modern aquaculture are also leading to an increase in the number of reported cases. Moreover, climate changes are affecting fresh and marine aquatic ecosystems. The increasing reports of mycobacteriosis in aquatic invertebrates may also be influenced by global climate warming, which could contribute to the microbes’ development and survival rates, pathogen transmission and host susceptibility. Several species of the genus Mycobacterium have been diagnosed in aquatic invertebrates; a few of them are significant due to their wide host spectrum, economic impact in aquaculture, and zoonotic potential. The impact of mycobacteriosis in aquatic invertebrates is probably underestimated, and there is currently no effective treatment other than facility disinfection. In this review, we provide an overview of the diversity of mycobacterial infections reported in molluscs, crustaceans, cnidarians, echinoderms and sponges. We highlight important issues relating to its pathological manifestation, diagnosis and zoonotic considerations.

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Pinna nobilis: A big bivalve with big haemocytes?

Cited by 62 publications

References 38 publications

Perkinsus mediterraneus infection induces oxidative stress in the mollusc Mimachlamys varia

Perkinsus mediterraneus infection induces oxidative stress in the mollusc Mimachlamys varia

Preliminary Study on the In vitro and In vivo Effects of Asparagopsis taxiformis Bioactive Phycoderivates on Teleosts

Mycobacteriosis in Aquatic Invertebrates: A Review of Its Emergence

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