PEZZATI , Elisabetta

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Vibrio-related infections are increasing worldwide both in humans and aquatic animals. Rise in global sea surface temperature (SST), which is approximately 1 °C higher now than 140 years ago and is one of the primary physical impacts of global warming, has been linked to such increases. In this chapter, major known effects of increasing SST on...

Vibrio cholerae O1 El Tor attachment to chitin and biofilm formation on polyvinylchloride surfaces via the N-acetylglucosamine-binding protein A (GbpA) and the mannose-sensitive haemagglutinin (MSHA) were investigated under different temperature and salinity conditions simulating those found in the aquatic environment. In vitro tests showed...

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A variety of pelagic and benthic parameters were measured at an aquaculture farm used for the fattening of Atlantic bluefin tuna (Thunnus thynnus) which is located at an exposed site (700 m from the coast, average bottom depth of 45 m and average current speed of 6 cm s1) in the Mediterranean Sea. The objective was to test whether modern...

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L'obiettivo di questo studio è quello di valutare l'effetto fotocatalitico di nanoparticelle di TiO2 con diversa struttura, dimensione e morfologia su batteri Gram negativi, in particolare su Escherichia coli e Pseudomonas aeruginosa. La fonte luminosa impiegata è stata una luce fluorescente.

We carried out a 16-month in situ study to investigate the ecology of Vibrio spp. and pathogenic Vibrio species in coastal sediments of the Mediterranean Sea, employing multiple-regression analysis to reveal the major environmental factors controlling their occurrence in the benthic environment. In addition, association between vibrios and...

The swash zone interstitial water (SZIW) which occupies interstices, or spaces between the sand grains at the shoreline is suspected of accumulating microbes and thus of posing a health risk for beach users. In this study we examined the presence and concentrations of filamentous fungi and yeasts in SZIW and compared the results to the fungal...

In aquatic environments, bivalve mollusks represent an important ecological niche for microorganisms. Persistence of bacteria in bivalve tissues partly depends on their capacity to survive the bactericidal activity of the hemolymph due to both cellular (hemocyes) and soluble serum factors (e.g., enzymes, lectins, opsonins). The extrapallial...

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Polymerase chain reaction (PCR) efficiency is the rate at which a PCR amplicon is generated. More efficient amplification of the DNA fragment (amplicon) will generate more products in fewer cycles, thus improving accuracy and sensitivity of quantitative PCR. The efficiency of Real-Time PCR to detect and quantify microbial cells was compared in...

Aims: To investigate the role of surface membrane proteins (MP) to promote attachment to chitin particles and copepods of different environmental and clinical vibrios. Method and Results: The role of surface MP to promote attachment to chitin particles and the copepod Tigriopus fulvus was investigated in several environmental and clinical...

The ecology of the oyster pathogens Vibrio splendidus and Vibrio aestuarianus in the brackish aquatic environment was extensively investigated in this study. By conducting laboratory experiments under natural setting conditions, it was shown that V. splendidus LGP32 strain generally exhibits longer persistence in both seawater and sediment than...

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The Vibrio cholerae N-acetyl glucosamine-binding protein A (GbpA) is a chitin-binding protein involved in V. cholerae attachment to environmental chitin surfaces and human intestinal cells. We previously investigated the distribution and genetic variations of gbpA in a large collection of V. cholerae strains and found that the gene is...

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