Cystoseira barbata marine algae have a molluscicidal activity against Biomphalaria alexandrina snails supported by scanning electron microscopy, hematological and histopathological alterations, and larvicidal activity against the infective stages of Schistosoma mansoni

Ibrahim, Amina M.; Abdel-Tawab, Heba

doi:10.2478/s11756-020-00457-3

Cited by 17 publications

(10 citation statements)

References 32 publications

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“…The hemocytes that contain coarse granules were occasionally detected and known (s) between digestive glands contained few germinal cells and the size of the vacant space was wider than normal to transport metabolic substances from the digestive glands or may be involved in the aggregation process (Nakayama et al 1997;Kheder 2020). The present findings match those introduced by Ibrahim and Abdel-Tawab (2020) who estimated that snails treated with LC 50 of algal extract (Cystosiera barbata) caused the formation of pseudopodia in hemocytes. Similarly, Mossalem and Mossa (2014) recorded the same results due to the treatment of Biomphalaria snails with rice bran extract before and after infection.…”

Section: Discussionsupporting

confidence: 88%

Assessment of Amphora coffeaeformis and Scenedesmus dimorphus algae as immunostimulant agents on Biomphlaria alexandrina snails against Schistosoma mansoni

2022

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Schistosoma mansoni is the main factor of human schistosomiasis which is responsible for high rates of mortality. Recently, the use of alternative biological control agents has gained importance in disease control because the intensive use of molluscicides is very harmful to human health and poses risks to the environment. In the present work, the potential effect of two freshwater algae, Amphora coffeaeformis and Scenedesmus obtusus, on the immune response of Biomphalaria alexandrina snails against infection with S. mansoni was investigated. Two different concentrations 1 and 2 g L− 1 from each dried algal material were tested on snails before exposure to miracidial infection by one day. The use of Amphora coffeaeformis has a greater immunostimulatory effect than Scendesmus obtusus at a low concentration of 1.0 g L− 1. The tested algae affected the snail’s hemocytes and its immune response to S. mansoni as evidenced by a significant decrease in infection rate and cercariae production. In addition, increasing in total hemocyte count, the formation of vacuoles, the appearance of several pseudopodia, and the formation of coarse granules in hemocytes of infected snails treated with A. coffeaeformis. Intense tissue reactions were also observed. In conclusion, it was confirmed that these algae can be used as an immunostimulant in the prevention and control of S. mansoni.

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Section: Discussionsupporting

confidence: 88%

Assessment of Amphora coffeaeformis and Scenedesmus dimorphus algae as immunostimulant agents on Biomphlaria alexandrina snails against Schistosoma mansoni

2022

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“…Regarding P. lividus, Acacetin, which is one of the major constituents of flavonoids in various Phaeophyta (e.g., Cystoseira sp. and D. dichotoma) species, was found to have a lower concentration in station A [92,93]. Increasing concentrations in the level of Acacetin and related flavonoids have shown to be reliable biomarkers for environmental stress in plants and increasing levels of herbivory [94][95][96][97].…”

Section: Discussionmentioning

confidence: 96%

Metabolomics Unravels Grazing Interactions under Nutrient Enrichment from Aquaculture

et al. 2022

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Our goal was to understand the mechanisms behind the impact of nutrient enrichment at intermediate distances from aquaculture on the interactions of a subtidal macroalgae community with its main grazer, the sea urchin Paracentrotus lividus. We assessed the diversity and cover of the macroalgal community, the abundance and biometrics of the sea urchins, the carbon and nitrogen elemental and isotopic compositions, and their metabolome in two stations, at an intermediate distance (station A) and away (station B) from a fish cage facility in the Aegean Sea (Greece), during the warm and cold seasons. The nutrient input at station A favored a shift to a macroalgal assemblage dominated by turf-forming species, depleted of native-erected species and with a higher abundance of invasive algae. A stable isotope analysis showed fish-farm-associated nitrogen enrichment of the macroalgae and trophic transfer to P. lividus. A decrease in metabolites related to grazing, reproduction, and energy reserves was found in P. lividus at station A. Furthermore, the metabolomic analysis was able to pinpoint stress in P. lividus at an intermediate distance from aquaculture. The chosen combination of traditional ecology with omics technology could be used to uncover not only the sublethal effects of nutrient loading but also the pathways for species interactions.

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“…Also, NMs possessed a highly adhesive property to a cell membrane therefore, it could affect the membrane structures and its macromolecules (Rasel et al 2019). In addition this damage in ultrastructure could lead to snail death (Ibrahim and Abdel-Tawab 2020).…”

Section: Discussionmentioning

confidence: 99%

“…xed, dehydrated, critically dried and coated as recommended by Ibrahim and Abdel-Tawab (2020). Finally, they were photographed by JSM-6510 LA.…”

Section: Scanning Electron Microscope Of the Mantle-foot Regionmentioning

confidence: 99%

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Toxicological evaluation of engineered layered double hydroxide nanomaterials to Biomphalaria alexandrina snails: a study on the mechanism of action

Abdo

Ibrahim

Hussein

et al. 2021

Preprint

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Layered double hydroxide (LDH) nanomaterials have recently become immense research area as it is used widely in industries. So, it's chance of their release into natural environment and risk assessment to non-target aquatic invertebrate increasing. So, the present study aimed to synthesize and confirme the crystalline formation of Co-Cd-Fe LDHs and Co-Cd-Fe /PbI2 (LDH), and then to investigate the toxic impact of the two LDH on the adult freshwater snails (Biomphalaia alexandrina). Results showed that Co-Cd-Fe /PbI2 LDH has more toxic effect to adult Biomphalaria than Co-Cd-Fe LDHs (LC50 was 56.4 mg/l, 72 h of exposure). The effect of LC25 (117.1 mg/l) of Co-Cd-Fe LDHs exposure on the embryo; showed suppression of embryonic development and induced embryo malformation. Also, it showed alterations in the tegmental architectures of the mantle-foot region of B. alexandrina snails as declared in scanning electron micrograph. Also, exposure to this sub lethal concentration caused abnormalities in hemocyte shapes and up-regulated IL-2 level in soft tissue. In addition, it decreased levels of non-enzymatic reduced glutathione (GSH), catalase (CAT), superoxide dismutase (SOD), caspase-3 activity and total protein content in significant manner. While, glutathione S-transferase (GST) activity was not affected by LDH exposure. It caused histopathological damages in both the hermaphrodite and digestive glands. Also, it has a genotoxic effect that was confirmed by alkaline comet assay. The results from the present study indicated that LDH has risk assessment on aquatic B. alexandrina snails and that it can be used as a biological indicator of water pollution with LDH

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Cystoseira barbata marine algae have a molluscicidal activity against Biomphalaria alexandrina snails supported by scanning electron microscopy, hematological and histopathological alterations, and larvicidal activity against the infective stages of Schistosoma mansoni

Cited by 17 publications

References 32 publications

Assessment of Amphora coffeaeformis and Scenedesmus dimorphus algae as immunostimulant agents on Biomphlaria alexandrina snails against Schistosoma mansoni

Assessment of Amphora coffeaeformis and Scenedesmus dimorphus algae as immunostimulant agents on Biomphlaria alexandrina snails against Schistosoma mansoni

Metabolomics Unravels Grazing Interactions under Nutrient Enrichment from Aquaculture

Toxicological evaluation of engineered layered double hydroxide nanomaterials to Biomphalaria alexandrina snails: a study on the mechanism of action

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