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Information Journal Paper

Title

ENGLISH: Therapeutic and Histopathological Effect of Aloe vera and Salvia officinalis Hydroethanolic Extracts against Streptococcus iniae in Rainbow Trout (Short Communication) (FRENCH: Effet Thé rapeutique et Histopathologique des Extraits Hydroé thanoliques d'Aloe vera et de Salvia officinalis contre Streptococcus iniae chez la Truite Arc-en-ciel)

Pages

  275-287

Keywords

Streptococcus iniae (FRENCH:Cineol 
Streptococcus iniae) 

Abstract

 ENGLISH: Some of the medicinal plants have antibacterial contents and appear to be proper alternatives for antibiotics in the treatment of streptococcal disease, which causes plenty of mortalities in fish farms annually. Therefore, this study investigated the therapeutic effect of Aloe vera and Salvia officinalis hydroethanolic extracts against Streptococcus iniae in rainbow trout. Plant extracts components were analyzed by Gas chromatography-mass spectrometry method and tested in vitro against S. iniae by disk diffusion assay. In in vivo, 480 rainbow trout (10± 0. 1 g) were distributed in 9 groups (with 3 replication), and all groups (except for the first group as the negative control that was injected with 100 μ l of physiologic serum) were injected by 100 μ l of LD50 (3. 66×108. 5CFU/ml) of S. iniae suspension, intraperitoneally. The fish of groups were treated by A. vera and S. officinalis extracts in doses 0 (positive control group was fed by commercial diet without plant extract), 0. 5, 1, and 1. 5% (supplemented diet) and 80 mg/kg body weight erythromycin for the next 10 days. At the end of the study period, tissue samples of the gills and livers of all groups were taken for the histopathological lesion assay. The results showed that A. vera and S. officinalis had antibacterial components as Cineol, and S. iniae was sensitive to both A. vera (MBC=4. 067 mg/ml) and S. officinalis (MBC=5. 185 mg/ml) extracts. At the end of the treatment period, there were no significant differences among erythromycin, A. vera (1. 5%), and A. vera (1%) in terms of the mortality of the infected fish (P˂ 0. 05). Moreover, A. vera (1. 5%) showed a significantly lower mortality rate, compared to the positive control (P˂ 0. 05). A. vera (1. 5%) was the best group to moderate all histopathological lesions, compared to other groups. Accordingly, A. vera (1. 5 %) is useful to treat streptococcosis (caused by S. iniae) and alter gill and liver histopathological lesions in rainbow trout. FRENCH: Ré sumé : Certaines des plantes mé dicinales ont un contenu antibacté rien et semblent ê tre des alternatives approprié es aux antibiotiques dans le traitement des maladies streptococciques, à l’ origine de nombreuses mortalité s dans les piscicultures chaque anné e. Par consé quent, cette é tude a examiné l'effet thé rapeutique des extraits hydroé thanoliques d'Aloe vera et de Salvia officinalis contre Streptococcus iniae chez la truite arc-enciel. Les composants des extraits de plantes ont é té analysé s par chromatographie en phase gazeuse couplé e à l'exception du premier groupe (contrô le né gatif traité avec 100μ l de sé rum physiologique) ont reç u 100μ l de DL50 (3, 66 × 108, 5CFU/ml) de suspension de S. iniae par voie intrapé ritoné ale. Les poissons des diffé rents groupes ont reç u diffé rentes concentrations d’ extraits d' A. vera et de S. officinalis aux doses 0 (le groupe de contrô le positif a é té nourri par un ré gime commercial sans extrait de plante), 0, 5, 1 et 1, 5% (ré gime complé mentaire) et 80 mg/kg de corps poids d'é rythromycine pour les 10 prochains jours. À la fin de la pé riode d'é tude, des é chantillons de tissus des branchies et des foies de tous les groupes ont é té pré levé s pour l’ examen des lé sions histopathologiques. Les ré sultats ont montré que A. vera et S. officinalis avaient des composants antibacté riens comme Cineol, et S. iniae é tait sensible à la fois à A. vera (MBC = 4, 067 mg/ml) et à S. officinalis (MBC = 5, 185 mg/ml). À la fin de la pé riode de traitement, il n'y avait aucune diffé rence significative entre l'é rythromycine, A. vera (1, 5%) et A. vera (1%) en termes de mortalité des poissons infecté s (P˂ 0. 05). De plus, A. vera (1, 5%) a montré un taux de mortalité significativement plus faible par rapport au contrô le positif (P˂ 0, 05). A. vera (1, 5%) é tait le meilleur groupe pour modé rer toutes les lé sions histopathologiques, . En consé quence, A. vera (1, 5%) est utile pour traiter le streptocoque (causé e par S. iniae) et modifier les lé sions histopathologiques des branchies et du foie chez la truite arc-en-ciel.

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    APA: Copy

    TAFI, A.A., MESHKINI, S., TUKMECHI, A., ALISHAHI, M., & NOORI, F.. (2020). ENGLISH: Therapeutic and Histopathological Effect of Aloe vera and Salvia officinalis Hydroethanolic Extracts against Streptococcus iniae in Rainbow Trout (Short Communication) (FRENCH: Effet Thé rapeutique et Histopathologique des Extraits Hydroé thanoliques d'Aloe vera et de Salvia officinalis contre Streptococcus iniae chez la Truite Arc-en-ciel). ARCHIVES OF RAZI INSTITUTE, 75(2), 275-287. SID. https://sid.ir/paper/781701/en

    Vancouver: Copy

    TAFI A.A., MESHKINI S., TUKMECHI A., ALISHAHI M., NOORI F.. ENGLISH: Therapeutic and Histopathological Effect of Aloe vera and Salvia officinalis Hydroethanolic Extracts against Streptococcus iniae in Rainbow Trout (Short Communication) (FRENCH: Effet Thé rapeutique et Histopathologique des Extraits Hydroé thanoliques d'Aloe vera et de Salvia officinalis contre Streptococcus iniae chez la Truite Arc-en-ciel). ARCHIVES OF RAZI INSTITUTE[Internet]. 2020;75(2):275-287. Available from: https://sid.ir/paper/781701/en

    IEEE: Copy

    A.A. TAFI, S. MESHKINI, A. TUKMECHI, M. ALISHAHI, and F. NOORI, “ENGLISH: Therapeutic and Histopathological Effect of Aloe vera and Salvia officinalis Hydroethanolic Extracts against Streptococcus iniae in Rainbow Trout (Short Communication) (FRENCH: Effet Thé rapeutique et Histopathologique des Extraits Hydroé thanoliques d'Aloe vera et de Salvia officinalis contre Streptococcus iniae chez la Truite Arc-en-ciel),” ARCHIVES OF RAZI INSTITUTE, vol. 75, no. 2, pp. 275–287, 2020, [Online]. Available: https://sid.ir/paper/781701/en

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