首页> 美国卫生研究院文献>Italian Journal of Food Safety >Occurrence of Vibrio Parahaemolyticus Vibrio Cholerae and Vibrio Vulnificus in the Clam Ruditapes Philippinarum (Adams Reeve 1850) from Emilia Romagna and Sardinia Italy
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Occurrence of Vibrio Parahaemolyticus Vibrio Cholerae and Vibrio Vulnificus in the Clam Ruditapes Philippinarum (Adams Reeve 1850) from Emilia Romagna and Sardinia Italy

机译:来自意大利艾米利亚·罗马涅和撒丁岛的蛤Ru菲律宾蛤仔(Adams&Reeve1850年)中出现副溶血性弧菌霍乱弧菌和外伤弧菌

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摘要

Marine vibrios, Vibrio parahaemolyticus, V. vulnificus and V. cholerae are responsible of the majority of food-borne human infections by consumption of bivalve shellfish. The aim of the present study was to ascertain the occurrence of these bacteria, and their potential pathogenicity, in the Manila clam R. philippinarum from Emilia Romagna (ER) and Sardinia (SR) regions, Italy. Isolation was performed on CHROMagarTM vibrio with subculture on (thiosulfate-citrate-bile salts-sucrose) Agar and m-modified-cellobiose-polymyxin b-colistin (-CPC) Agar. Suspected strains were purified, biochemically characterized and genotyped by simplex polymerase chain reaction (PCR) for the specie-specific and pathogenic gene markers: V. parahaemolyticus (toxRP, tdh and trh); V. vulnificus (vvhA, hsp, vcgC, vcgE, CPS operon allele 1, CPS operon allele 2, 16s-rRNA operon allele A, 16s-rRNA operon allele B; V. cholerae (toxRC, hlya, tcpI, tcpA, ctxA, ctxB, stn/sto). Moreover a multiplex PCR was applied to the SR bivalve shellfish, for the simultaneous detection of the three targets directly on homogenate samples, targeting the species-specific gene for V. cholerae (toxRC), V. parahaemolyticus (toxRP) and V. vulnificus (vvhA). As a result of phenotyping and genotyping of isolates, bivalve shellfish from ER resulted positive for V. parahaemolyticus (27.8%) and V. vulnificus (10.1%), but negative for V. cholerae. Shellfish from SR resulted positive for V. parahaemolyticus (30.3%), V. vulnificus (6.1%) and V. cholerae (3%). No significant differences emerged between the two areas (P>0.05).
机译:通过食用双壳贝类,海洋弧菌,副溶血弧菌,创伤弧菌和霍乱弧菌是大多数食源性人类感染的原因。本研究的目的是确定这些细菌在意大利艾米利亚·罗马涅(ER)和撒丁岛(SR)地区的马尼拉蛤仔R. philippinarum中的发生及其潜在的致病性。在CHROMagar TM 弧菌上进行分离,并在(硫代硫酸盐-柠檬酸盐-胆汁盐-蔗糖)琼脂和m-修饰的纤维二糖-多粘菌素β-colistin(-CPC)琼脂上继代培养。对疑似菌株进行纯化,生化鉴定,并通过单工聚合酶链反应(PCR)对种特异性和致病性基因标记进行基因分型:副溶血弧菌(toxRP,tdh和trh); V.vulnificus(vvhA,hsp,vcgC,vcgE,CPS操纵子等位基因1,CPS操纵子等位基因2,16s-rRNA操纵子等位基因A,16s-rRNA操纵子等位基因B;霍乱弧菌(toxRC, hlya tcpI tcpA ctxA ctxB stn / sto )。此外,还对SR双壳贝类进行了多重PCR,直接在匀浆样品上同时检测了三个目标,这些目标靶向霍乱弧菌的物种特异性基因(< em> toxR C),副溶血性弧菌 toxR P)和 Vulnificus vvhA >)。由于分离物的表型和基因型,ER的双壳贝类对 V parahaemolyticus (27.8%)和 V。vulnificus 呈阳性em>(10.1%),但对 V。cholerae 呈阴性; SR的贝类对 V 呈阳性。 parahaemolyticus (30.3%),< em> V。vulnificus (6.1%)和 V。cholerae (3%),两者之间没有显着差异。为(P> 0.05)。

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