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1.
Dong Wen-Long Liu Lei Odah Kokou Ayefounin Atiah Luke Atiewin Gao Yun-Hang Kong Ling-Cong Ma Hong-Xia 《Tropical animal health and production》2019,51(7):2099-2103
Tropical Animal Health and Production - Trueperella pyogenes (T. pyogenes) is a worldwide known pathogen of domestic ruminants and pigs causing a wide variety of infections. The objective of this... 相似文献
2.
Foteini Kokou Pavlos Makridis Maroudio Kentouri Pascal Divanach 《Aquaculture Research》2012,43(10):1520-1527
Five cultures of microalgae (Chlorella minutissima, Tetraselmis chui, Nannochloropsis sp., Arthrospira platensis and Isochrysis sp.) with no culturable bacteria were tested for their ability to inhibit the growth of six Vibrio bacterial strains (V. parahaemolyticus, V. anguillarum, V. splendidus, V. scophthalmi, V. alginolyticus and V. lentus). The influence of light on the antibacterial activity of the microalgae was investigated. All microalgae cultures inhibited the growth of bacteria compared with the control treatments (P < 0.05), and their antibacterial activity was not influenced by the presence or absence of light. In the control groups, the numbers of bacteria increased exponentially during the experimental period in the absence of microalgae cells demonstrating that the bacterial cells were able to utilize the growth medium of microalgae cultures. The present results may explain the low levels or absence of Vibrio strains in microalgae cultures, and the positive effect of addition of microalgae in rearing of fish larvae, and implicate the production of antibacterial compounds by microalgae cells. 相似文献
3.
Bruno Vincent Fotini Koutroumpa Valérie Altemayer Géraldine Roux-Morabito Jeremy Gevar Carine Martin François Lieutier 《Annals of Forest Science》2008,65(1):111-111
As a consequence of the recent introduction of the pine wood nematode Bursaphelenchus xylophilus in Portugal, nematodes of the genus Bursaphelenchus were looked for in various French pine forests, in trees attacked by Monochamus galloprovincialis, the vector insect of B. xylophilus, and in the insects themselves. Trap trees were felled in 12 localities distributed all over the country. Nematodes were extracted from transversal stem discs; insects emerging from the trap trees were studied. B. hellenicus, B. leoni, B. mucronatus and B. sexdentati were isolated, but not B. xylophilus. The presence of B. mucronatus and the absence of B. xylophilus were confirmed by molecular markers. B. mucronatus was isolated from several regions with an average prevalence of 19%. The infestation of M. galloprovincialis by B. mucronatus reached 26.7%. The wide distribution of B. mucronatus in France could have an effect on the extension of B. xylophilus in a case of an introduction. 相似文献
4.
Batawila K Kokou K Koumaglo K Gbéassor M de Foucault B Bouchet P Akpagana K 《Fitoterapia》2005,76(2):264-268
Five species of Combretaceae growing in Togo were investigated for their antifungal activity against 20 pathogenic fungi (10 yeast and 10 filamentous fungi). The five hydroethanolic extracts of Terminalia glaucescens and Anogeissus leiocarpus appeared to be the most active, their MICs ranging from 0.25 mg/ml to 4 mg/ml. The results confirm the traditional therapeutic properties of these plants. 相似文献
5.
Papandreou MA Kanakis CD Polissiou MG Efthimiopoulos S Cordopatis P Margarity M Lamari FN 《Journal of agricultural and food chemistry》2006,54(23):8762-8768
Crocus sativus stigmas are one of the widely known spices (saffron) and consist of unusually polar carotenoids. Alzheimer's disease is characterized pathologically by deposition of amyloid beta-peptide (Abeta) fibrils. Oxidation is thought to promote Abeta fibril formation and deposition. To identify agents inhibiting the pathogenesis of Alzheimer's disease, we examined in vitro the antioxidant properties of extract of C. sativus stigmas and its effect on Abeta(1-40) fibrillogenesis. The antioxidant properties were determined by measuring the ferric-reducing antioxidant power and Trolox-equivalent antioxidant capacity, while its effects on Abeta-aggregation and fibrillogenesis were studied by thioflavine T-based fluorescence assay and by DNA binding shift assay. The water:methanol (50:50, v/v) extract of C. sativus stigmas possesses good antioxidant properties, higher than those of tomatoes and carrots, and inhibited Abeta fibrillogenesis in a concentration and time-dependent manner. The main carotenoid constituent, trans-crocin-4, the digentibiosyl ester of crocetin, inhibited Abeta fibrillogenesis at lower concentrations than dimethylcrocetin, revealing that the action of the carotenoid is enhanced by the presence of the sugars. Our findings suggest the possible use of C. sativus stigma constituents for inhibition of aggregation and deposition of Abeta in the human brain. 相似文献
6.
Malandrakis Anastasios A. Apostolidou Zoi A. Markoglou Anastasios Flouri Fotini 《European journal of plant pathology / European Foundation for Plant Pathology》2015,142(3):489-499
European Journal of Plant Pathology - 42 field isolates of Alternaria alternata collected from infected tomato fruit of processing plants located in the region of Pelloponisos, South Greece, were... 相似文献
7.
Konstantina Bitchava Taxiarchis Chassalevris Eirini Lampou Fotini Athanassopoulou Vangelis Economou Chrysostomos I. Dovas 《Journal of fish diseases》2019,42(12):1773-1783
Betanodaviruses are small ssRNA viruses that cause viral encephalopathy and retinopathy, a severe neuropathological infectious disease in marine fish species worldwide. In the present study, the occurrence of betanodaviruses was investigated in wild and cultured populations of fishes and invertebrates of the Greek territorial waters. Betanodaviruses were detected in 35 species belonging to 21 families and 12 orders. To our knowledge, 23 of those are reported for the first time in Greek waters, while 11 of them are reported for the first time globally. The positive samples were subjected to sequencing and phylogenetic analysis of partial segments of RNA1 and RNA2 genes. Almost all the viruses circulating in Greece fell within RGNNV genotype, while reassortant viruses were detected in three samples, namely two inter‐RGNNV and one RGNNV/SJNNV. A novel unclassified Betanodavirus sequence was also identified. Most of the Greek sequence types have a restricted geographic distribution except for two RNA1 and one RNA2 sequence types that are widespread throughout the Mediterranean basin. The results of this study indicate the range of reservoirs/hosts of betanodaviruses and also their wide spread in the Greek territorial waters and reinforce the hypothesis that wild fish species transmit the virus to cultured ones and vice versa. 相似文献
8.
Effects of Fish Meal Replacement by a Soybean Protein on Growth,Histology, Selected Immune and Oxidative Status Markers of Gilthead Sea Bream,Sparus aurata 下载免费PDF全文
Fotini Kokou Elena Sarropoulou Efthimia Cotou George Rigos Morgane Henry Maria Alexis Maroudio Kentouri 《Journal of the World Aquaculture Society》2015,46(2):115-128
The purpose of the trial was to study the impact of a 6‐mo dietary administration of soybean protein on growth, liver and intestine morphology, immune response, and oxidative stress in gilthead sea bream. The immune response was evaluated by performing immunological assays in blood, head kidney (HK), or serum (respiratory burst activity [RBA], myeloperoxidase content and bacteriolytic activity) and gene expression analysis of immune‐associated genes (MHCIIα [major histocompatibility complex IIα], β2m [β‐2‐microglobulin], CSF‐1R [colony‐stimulating factor‐1 receptor], NCCRP‐1 [nonspecific cytotoxic cell receptor protein 1], TGF‐β1 [transforming growth factor beta‐1], and HSP70 [heat‐shock protein 70]) in HK and intestine. Oxidative stress was evaluated by measuring the activity of liver enzymes associated with antioxidant system. The soybean protein was administrated in the diets at 20, 40, and 60% levels and its effects were evaluated compared with a fish meal diet. Growth and feed efficiency were affected negatively from 40% level. Increased RBA and expression levels of TGF‐β1 and β2m were found in HK only at 40% level. In intestine, at 60% level CSF‐1R expression was upregulated and some signs of inflammation were evident. In liver, at 60% level lipid accumulation in hepatocytes was observed and enzyme activity was increased. Dietary administration of soybean protein indicated changes from 40% in growth and immune response, and exerted an antioxidative effect at 60% level. 相似文献
9.
Geromichalos GD Lamari FN Papandreou MA Trafalis DT Margarity M Papageorgiou A Sinakos Z 《Journal of agricultural and food chemistry》2012,60(24):6131-6138
Inhibitors of acetylcholine breakdown by acetylcholinesterase (AChE) constitute the main therapeutic modality for Alzheimer's disease. In the search for natural products with inhibitory action on AChE, this study investigated the activity of saffron extract and its constituents by in vitro enzymatic and molecular docking studies. Saffron has been used in traditional medicine against Alzheimer's disease. Saffron extract showed moderate AChE inhibitory activity (up to 30%), but IC(50) values of crocetin, dimethylcrocetin, and safranal were 96.33, 107.1, and 21.09 μM, respectively. Kinetic analysis showed mixed-type inhibition, which was verified by in silico docking studies. Safranal interacts only with the binding site of the AChE, but crocetin and dimethylcrocetin bind simultaneously to the catalytic and peripheral anionic sites. These results reinforce previous findings about the beneficial action of saffron against Alzheimer's disease and may be of value for the development of novel therapeutic agents based on carotenoid-based dual binding inhibitors. 相似文献
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