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Marconi F, Sartoni M, Girardi C, Rossi A, Carrini M, Nuvoloni R, Pedonese F, Munaò G. Analysis of two cross-contamination cases of Campylobacter jejuni foodborne disease in fragile subjects in the territory of a Local Health Authority in Tuscany, Italy. Ital J Food Saf 2024; 13:12053. [PMID: 38577580 PMCID: PMC10993647 DOI: 10.4081/ijfs.2024.12053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 12/21/2023] [Indexed: 04/06/2024] Open
Abstract
Campylobacteriosis is the most reported foodborne disease in the European Union, with more than 100,000 confirmed cases annually. Human infection can be caused by a low infectious dose, and in fragile populations, the food disease can manifest itself in acute and severe forms. This study aims to analyze two cases of campylobacteriosis in fragile people caused by Campylobacter jejuni in 2023 in Tuscany and the actions of the Local Health Competent Authority. From the results of the related investigations, it was possible to attribute both cases of foodborne diseases to unsafe food management during preparation/administration. Given the peculiar characteristics of the etiological agent, it is necessary to focus the attention of the population, especially those who deal with fragile subjects, on the good hygiene practices to be followed both at home and in collective catering.
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Affiliation(s)
| | | | - Clara Girardi
- Department of Veterinary Sciences, University of Pisa
| | - Aurelio Rossi
- Department of Veterinary Sciences, University of Pisa
| | | | - Roberta Nuvoloni
- Department of Veterinary Sciences, University of Pisa
- Interdepartmental Research Center Nutrafood “Nutraceuticals and Food for Health”, University of Pisa
| | - Francesca Pedonese
- Department of Veterinary Sciences, University of Pisa
- Interdepartmental Research Center Nutrafood “Nutraceuticals and Food for Health”, University of Pisa
| | - Giovanni Munaò
- Veterinary Public Health and Food Safety Functional Unit, Local Health Competent Authority Toscana Centro, Firenze 2, Calenzano, Italy
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Bozzini MF, Pieracci Y, Ascrizzi R, Najar B, D'Antraccoli M, Ciampi L, Peruzzi L, Turchi B, Pedonese F, Alleva A, Flamini G, Fratini F. Chemical Composition and Antimicrobial Activity against the Listeria monocytogenes of Essential Oils from Seven Salvia Species. Foods 2023; 12:4235. [PMID: 38231686 DOI: 10.3390/foods12234235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 11/14/2023] [Accepted: 11/21/2023] [Indexed: 01/19/2024] Open
Abstract
In recent years, essential oils (EOs) have received interest due to their antibacterial properties. Accordingly, the present study aimed to investigate the effectiveness of the EOs obtained from seven species of Salvia on three strains of Listeria monocytogenes (two serotyped wild strains and one ATCC strain), a bacterium able to contaminate food products and cause foodborne disease in humans. The Salvia species analysed in the present study were cultivated at the Botanic Garden and Museum of the University of Pisa, and their air-dried aerial parts were subjected to hydrodistillation using a Clevenger apparatus. The obtained EOs were analysed via gas chromatography coupled with mass spectrometry for the evaluation of their chemical composition, and they were tested for their inhibitory and bactericidal activities by means of MIC and MBC. The tested Eos showed promising results, and the best outcomes were reached by S. chamaedryoides EO, showing an MIC of 1:256 and an MBC of 1:64. The predominant compounds of this EO were the sesquiterpenes caryophyllene oxide and β-caryophyllene, together with the monoterpenes bornyl acetate and borneol. These results suggest that these EOs may possibly be used in the food industry as preservatives of natural origins.
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Affiliation(s)
| | - Ylenia Pieracci
- Dipartimento di Farmacia, Università di Pisa, Via Bonanno 6, 56126 Pisa, Italy
| | - Roberta Ascrizzi
- Dipartimento di Farmacia, Università di Pisa, Via Bonanno 6, 56126 Pisa, Italy
- Centro Interdipartimentale 'NUTRAFOOD', Università di Pisa, Via del Borghetto 80, 56124 Pisa, Italy
| | - Basma Najar
- Pharmacognosy, Bioanalysis & Drug Discovery Unit, Faculty of Pharmacy, Free University of Bruxelles, Bld Triomphe, Campus Plaine, CP 205/9, B-1050 Bruxelles, Belgium
| | - Marco D'Antraccoli
- Orto e Museo Botanico, Università di Pisa, Via Luca Ghini 13, 56126 Pisa, Italy
| | - Luca Ciampi
- Orto e Museo Botanico, Università di Pisa, Via Luca Ghini 13, 56126 Pisa, Italy
| | - Lorenzo Peruzzi
- Orto e Museo Botanico, Università di Pisa, Via Luca Ghini 13, 56126 Pisa, Italy
- Dipartimento di Biologia, Università di Pisa, Via Derna 1, 56126 Pisa, Italy
| | - Barbara Turchi
- Centro Interdipartimentale 'NUTRAFOOD', Università di Pisa, Via del Borghetto 80, 56124 Pisa, Italy
- Dipartimento di Scienze Veterinarie, Università di Pisa, Viale delle Piagge 2, 56124 Pisa, Italy
| | - Francesca Pedonese
- Centro Interdipartimentale 'NUTRAFOOD', Università di Pisa, Via del Borghetto 80, 56124 Pisa, Italy
- Dipartimento di Scienze Veterinarie, Università di Pisa, Viale delle Piagge 2, 56124 Pisa, Italy
| | - Alice Alleva
- Dipartimento di Scienze Agrarie, Alimentari e Agro-Ambientali, Università di Pisa, Via del Borghetto 80, 56124 Pisa, Italy
| | - Guido Flamini
- Dipartimento di Farmacia, Università di Pisa, Via Bonanno 6, 56126 Pisa, Italy
- Centro Interdipartimentale 'NUTRAFOOD', Università di Pisa, Via del Borghetto 80, 56124 Pisa, Italy
| | - Filippo Fratini
- Centro Interdipartimentale 'NUTRAFOOD', Università di Pisa, Via del Borghetto 80, 56124 Pisa, Italy
- Dipartimento di Scienze Veterinarie, Università di Pisa, Viale delle Piagge 2, 56124 Pisa, Italy
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Pedonese F, Fratini F, Copelotti E, Marconi F, Carrese R, Mancini S. Behaviour of Staphylococcus aureus in the Rearing Substrate of Tenebrio molitor Larvae. Vet Sci 2023; 10:549. [PMID: 37756071 PMCID: PMC10534670 DOI: 10.3390/vetsci10090549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 08/28/2023] [Accepted: 08/30/2023] [Indexed: 09/28/2023] Open
Abstract
Tenebrio molitor (mealworm) is one of the most promising insect species to produce sustainable feed and food with high nutritional value. Insects may harbour microorganisms both in the gut and on the exoskeleton originating from the rearing environment. Staphylococcus aureus is a pathogenic microorganism frequently involved in food poisoning due to its enterotoxin production. This study aimed to evaluate the S. aureus growth and enterotoxins production following an experimental inoculation into the T. molitor rearing substrate (about 7 log CFU/g). Analyses on the substrate and larvae were performed over a testing period of seven days. The microbial population dynamics were also evaluated through total viable count and lactic acid bacteria count. The effects of fasting, washing, and cooking on the microbial loads of mealworms were evaluated. The results highlighted that mealworms and substrates can maintain their microbial loads of S. aureus over the tested period. Moreover, fasting and washing were generally not able to significantly reduce (p-value > 0.05) S. aureus count in mealworms. On the other hand, cooking significantly reduced (p-value < 0.001) the microbial load in almost all cases. No production of enterotoxins was revealed during the trial. Therefore, microbiological risks can be reduced by a wise choice of substrate, appropriate control measures, and thermal treatment of larvae.
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Affiliation(s)
- Francesca Pedonese
- Department of Veterinary Sciences, University of Pisa, Viale delle Piagge 2, 56124 Pisa, Italy; (F.P.); (E.C.); (F.M.); (S.M.)
- Interdepartmental Research Center “Nutraceuticals and Food for Health”, University of Pisa, Via del Borghetto 80, 56124 Pisa, Italy
| | - Filippo Fratini
- Department of Veterinary Sciences, University of Pisa, Viale delle Piagge 2, 56124 Pisa, Italy; (F.P.); (E.C.); (F.M.); (S.M.)
- Interdepartmental Research Center “Nutraceuticals and Food for Health”, University of Pisa, Via del Borghetto 80, 56124 Pisa, Italy
| | - Emma Copelotti
- Department of Veterinary Sciences, University of Pisa, Viale delle Piagge 2, 56124 Pisa, Italy; (F.P.); (E.C.); (F.M.); (S.M.)
| | - Francesca Marconi
- Department of Veterinary Sciences, University of Pisa, Viale delle Piagge 2, 56124 Pisa, Italy; (F.P.); (E.C.); (F.M.); (S.M.)
| | - Roberto Carrese
- Department of Veterinary Sciences, University of Pisa, Viale delle Piagge 2, 56124 Pisa, Italy; (F.P.); (E.C.); (F.M.); (S.M.)
| | - Simone Mancini
- Department of Veterinary Sciences, University of Pisa, Viale delle Piagge 2, 56124 Pisa, Italy; (F.P.); (E.C.); (F.M.); (S.M.)
- Interdepartmental Research Center “Nutraceuticals and Food for Health”, University of Pisa, Via del Borghetto 80, 56124 Pisa, Italy
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Marconi F, Sartoni M, Nuvoloni R, Torracca B, Gagliardi M, Zappalà G, Guidi A, Pedonese F. Food safety culture in food companies: evaluation of the perception of food safety culture in three Tuscan food companies. Ital J Food Saf 2023; 12:11012. [PMID: 37064518 PMCID: PMC10102961 DOI: 10.4081/ijfs.2023.11012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 01/23/2023] [Indexed: 04/18/2023] Open
Abstract
The Commission Regulation (EU) No. 2021/382 (European Commission, 2021), amending the Regulation (EC) No. 852/2004 (European Commission, 2004), introduced the obligation for companies to establish and maintain a food safety culture (FSC). The methodology to evaluate, implement, and enhance the level of FSC is up to the individual companies. This study aimed to investigate the perception of FSC among the employees of 3 Tuscan medium-sized enterprises in the food sector, producing cured meat (A), dairy products (B), and frozen fish products (C). The survey was conducted through the development and administration of a questionnaire based on a 5 points Likert scale, referring to different aspects of FSC, organized in 6 sections with 5-6 statements each and subjected to a percentage of employees between 76 and 85%, classified also by the length of service (≤3 and >3 years). For all the companies, the minimum median and mode value for scores obtained by the different sections was 4, and the minimum median and mode value for the single statement was 3 (A, B; except for a bimodal value 2-4) and 4 (C). The section awareness and perception of risk showed the highest mean scores in all companies. As for the length of service, senior employees gave lower scores than junior ones in all sections in B and 3 sections in C. Overall, the results of the questionnaires showed a good perception of FSC, even though it was possible to identify some partial weaknesses.
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Affiliation(s)
| | - Martina Sartoni
- Department of Veterinary Sciences, University of Pisa, Italy
- Department of Veterinary Sciences, University of Pisa, Viale delle Piagge 2, 56124 Pisa, Italy. +39-050-2216987 - +39-050-2210654. .
| | - Roberta Nuvoloni
- Department of Veterinary Sciences, University of Pisa, Italy
- Interdepartmental Research Center Nutrafood "Nutraceuticals and Food for Health", University of Pisa, Italy
| | | | | | - Giulia Zappalà
- Department of Veterinary Sciences, University of Pisa, Italy
| | - Alessandra Guidi
- Department of Veterinary Sciences, University of Pisa, Italy
- Interdepartmental Research Center Nutrafood "Nutraceuticals and Food for Health", University of Pisa, Italy
| | - Francesca Pedonese
- Department of Veterinary Sciences, University of Pisa, Italy
- Interdepartmental Research Center Nutrafood "Nutraceuticals and Food for Health", University of Pisa, Italy
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Ziomek M, Gondek M, Torracca B, Marotta F, Garofolo G, Wieczorek K, Michalak K, Fratini F, Pedonese F. Occurrence of Campylobacter in Faeces, Livers and Carcasses of Wild Boars Hunted in Tuscany (Italy) and Evaluation of MALDI-TOF MS for the Identification of Campylobacter Species. Foods 2023; 12:foods12040778. [PMID: 36832850 PMCID: PMC9956588 DOI: 10.3390/foods12040778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 01/23/2023] [Accepted: 02/01/2023] [Indexed: 02/15/2023] Open
Abstract
A total of 193 wild boars hunted in Tuscany, an Italian region with a high presence of wild ungulates, were examined to assess the occurrence of Campylobacter species in faeces, bile, liver and carcasses, with the aim of clarifying their contribution to human infection through the food chain. Campylobacter spp. were found in 44.56% of the animals, 42.62% of the faecal samples, 18.18% of the carcass samples, 4.81% of the liver tissues and 1.97% of the bile samples. The Campylobacter species genotypically identified were C. coli, C. lanienae, C. jejuni and C. hyointestinalis. The prevalent species transpired to be C. coli and C. lanienae, which were isolated from all the matrices; C. jejuni was present in faeces and liver, while C. hyointestinalis only in faeces. Identification was carried out by matrix-assisted laser desorption/ionisation-time-of-flight mass spectrometry (MALDI-TOF MS) on 66 out of 100 isolates identified genotypically, and the technique yielded unsatisfactory results in the case of C. lanienae, which is responsible for sporadic human disease cases. The level of Campylobacter spp. contamination of meat and liver underlines the need to provide appropriate food safety information to hunters and consumers.
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Affiliation(s)
- Monika Ziomek
- Department of Food Hygiene of Animal Origin, University of Life Sciences in Lublin, Akademicka 12, 20-950 Lublin, Poland
- Correspondence: (M.Z.); (F.P.); Tel.: +48-81-445-68-91 (M.Z.); +39-050-2216707 (F.P.)
| | - Michał Gondek
- Department of Food Hygiene of Animal Origin, University of Life Sciences in Lublin, Akademicka 12, 20-950 Lublin, Poland
| | - Beatrice Torracca
- Department of Veterinary Sciences, University of Pisa, Viale delle Piagge 2, 56124 Pisa, Italy
| | - Francesca Marotta
- National Reference Laboratory for Campylobacter, Istituto Zooprofilattico Sperimentale dell’Abruzzo e del Molise “G. Caporale”, Via Campo Boario 1, 64100 Teramo, Italy
| | - Giuliano Garofolo
- National Reference Laboratory for Campylobacter, Istituto Zooprofilattico Sperimentale dell’Abruzzo e del Molise “G. Caporale”, Via Campo Boario 1, 64100 Teramo, Italy
| | - Kinga Wieczorek
- National Veterinary Research Institute, Department of Hygiene of Food of Animal Origin, Partyzantow 57, 24-100 Pulawy, Poland
| | - Katarzyna Michalak
- Department and Clinic of Animal Internal Diseases, Faculty of Veterinary Medicine, University of Life Sciences, Głęboka 30, 20-612 Lublin, Poland
| | - Filippo Fratini
- Department of Veterinary Sciences, University of Pisa, Viale delle Piagge 2, 56124 Pisa, Italy
- Interdepartmental Research Center Nutrafood “Nutraceuticals and Food for Health”, University of Pisa, Via del Borghetto 80, 56124 Pisa, Italy
| | - Francesca Pedonese
- Department of Veterinary Sciences, University of Pisa, Viale delle Piagge 2, 56124 Pisa, Italy
- Interdepartmental Research Center Nutrafood “Nutraceuticals and Food for Health”, University of Pisa, Via del Borghetto 80, 56124 Pisa, Italy
- Correspondence: (M.Z.); (F.P.); Tel.: +48-81-445-68-91 (M.Z.); +39-050-2216707 (F.P.)
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Pedonese F, Longo E, Torracca B, Najar B, Fratini F, Nuvoloni R. Antimicrobial and anti-biofilm activity of manuka essential oil against Listeria monocytogenes and Staphylococcus aureus of food origin. Ital J Food Saf 2022; 11:10039. [PMID: 35284338 PMCID: PMC8883831 DOI: 10.4081/ijfs.2022.10039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Accepted: 01/14/2022] [Indexed: 12/02/2022] Open
Abstract
The activity of manuka (Leptospermum scoparium) essential oil (EO) on biofilms of foodborne Listeria monocytogenes and Staphylococcus aureus has been studied. Seven strains of L. monocytogenes and 7 of S. aureus (5 methicillin-resistant) were tested. EO minimal inhibitory concentration (MIC), EO minimal bactericidal concentration (MBC) and biofilm production quantification were determined for each strain by microtiter methods. Moreover, EO Minimum Biofilm Inhibitory Concentration (MBIC) and Minimum Biofilm Eradicating Concentration (MBEC) were determined on 2 L. monocytogenes and 3 S. aureus that showed the best biofilm production. Finally, on 4 strains out of 5 (2 L. monocytogenes and 2 S. aureus) EO Biofilm Reduction Percentage (BRP) vs. untreated controls was assessed after a treatment with EO subinhibitory concentrations. The chemical composition of manuka essential oil was determined by Gas Chromatography- Electron Impact Mass Spectrometry (GCEIMS). The manuka EO demonstrated good antimicrobial activity: L. monocytogenes MIC and MBC were 0.466 mg/ml and 0.933 mg/ml, respectively, whereas S. aureus MIC and MBC were 0.233 mg/ml and 0.466 mg/ml, respectively. Furthermore, L. monocytogenes showed a MBIC of 0.933 mg/ml and a MBEC in the range of 0.933–1.865 mg/ml, whereas S. aureus had a MBIC in the range of 7.461–14.922 mg/ml and a MBEC of 14.922 mg/ml. L. monocytogenes revealed no significant BRP after the treatment with manuka EO, whereas S. aureus showed a BRP higher than 50% with MIC/2 and MIC/4 EO concentrations. These results provide information for feasible manuka EO applications in food production systems.
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Ziomek M, Drozd Ł, Gondek M, Pyz-Łukasik R, Pedonese F, Florek M, Domaradzki P, Skałecki P. Microbiological Changes in Meat and Minced Meat from Beavers ( Castor fiber L.) during Refrigerated and Frozen Storage. Foods 2021; 10:foods10061270. [PMID: 34199678 PMCID: PMC8227394 DOI: 10.3390/foods10061270] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 05/27/2021] [Accepted: 05/31/2021] [Indexed: 11/23/2022] Open
Abstract
This study aims to evaluate the microbiological status, pH, and water activity of European beaver meat to establish its shelf-life and microbiological safety. In this study, the microbiological profiles of meat and minced meat obtained from the carcasses of beavers were investigated. Microbial evaluation of the chilled meat was performed within 24 h after hunting, on the 7th day and 14th day, and the evaluation of the frozen meat was made during the 11th week of storage. Meat samples were analysed for total viable count (TVC), psychrotrophic bacteria count (PBC), Enterobacteriaceae count (EBC), Escherichiacoli count (EC), total staphylococcal count (TSC), lactic acid bacteria count (LABC) and total yeast and mould counts (TYMC). Tests for the presence of pathogenic bacteria from the genus Salmonella and Listeria were also performed. Additionally, the pH and water activity were determined. The initial amount of TVC was 4.94 log CFU/g in meat samples and 4.80 log CFU/g in minced meat. After 14 days of storage, the TVC increased to 8.33 in meat samples and 8.08 log CFU/g in minced meat. Pathogenic bacteria such as Listeria and Salmonella were not found in the beaver meat tested. The microbiological state of meat stored frozen for 11 weeks was comparable to the state found in meat stored refrigerated for seven days regarding the number of microorganisms.
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Affiliation(s)
- Monika Ziomek
- Department of Food Hygiene of Animal Origin, University of Life Sciences in Lublin, Akademicka 12, 20-950 Lublin, Poland; (M.Z.); (M.G.); (R.P.-Ł.)
| | - Łukasz Drozd
- Department of Food Hygiene of Animal Origin, University of Life Sciences in Lublin, Akademicka 12, 20-950 Lublin, Poland; (M.Z.); (M.G.); (R.P.-Ł.)
- Correspondence: ; Tel.: +48-81-445-62-56
| | - Michał Gondek
- Department of Food Hygiene of Animal Origin, University of Life Sciences in Lublin, Akademicka 12, 20-950 Lublin, Poland; (M.Z.); (M.G.); (R.P.-Ł.)
| | - Renata Pyz-Łukasik
- Department of Food Hygiene of Animal Origin, University of Life Sciences in Lublin, Akademicka 12, 20-950 Lublin, Poland; (M.Z.); (M.G.); (R.P.-Ł.)
| | - Francesca Pedonese
- Department of Veterinary Sciences, University of Pisa, Viale delle Piagge 2, 56124 Pisa, Italy;
| | - Mariusz Florek
- Faculty of Animal Sciences and Bioeconomy, Institute of Quality Assessment and Processing of Animal Products, University of Life Sciences in Lublin, Akademicka 13, 20-950 Lublin, Poland; (M.F.); (P.D.); (P.S.)
| | - Piotr Domaradzki
- Faculty of Animal Sciences and Bioeconomy, Institute of Quality Assessment and Processing of Animal Products, University of Life Sciences in Lublin, Akademicka 13, 20-950 Lublin, Poland; (M.F.); (P.D.); (P.S.)
| | - Piotr Skałecki
- Faculty of Animal Sciences and Bioeconomy, Institute of Quality Assessment and Processing of Animal Products, University of Life Sciences in Lublin, Akademicka 13, 20-950 Lublin, Poland; (M.F.); (P.D.); (P.S.)
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Marzoli F, Turchi B, Pedonese F, Torracca B, Bertelloni F, Cilia G, Cerri D, Fratini F. Coagulase negative staphylococci from ovine bulk-tank milk: Effects of the exposure to sub-inhibitory concentrations of disinfectants for teat-dipping. Comp Immunol Microbiol Infect Dis 2021; 76:101656. [PMID: 33915404 DOI: 10.1016/j.cimid.2021.101656] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 04/14/2021] [Indexed: 11/26/2022]
Abstract
Teat-dipping is one of the most effective methods to prevent mammary infections in ruminants, including sub-clinical mastitis caused by coagulase-negative staphylococci (CoNS). Improper disinfectant application could expose microorganisms to sub-inhibitory concentrations leading to phenotypic variations. In this study, 12 chlorhexidine-digluconate (CHDG)-tolerant (of which 4 qac positive) and 12 benzalkonium chloride (BC)-tolerant (of which 7 qac-positive) CoNS isolates from ovine milk were exposed to sub-inhibitory concentrations of CHDG and BC, respectively. Changes in disinfectant susceptibility against BC and CHDG, antibiotic resistance against 12 antibiotics and biofilm production were then assessed for both groups. After CHDG stress, 67 % and 83 % of the CHDG-stressed isolates doubled their MICs for BC and CHDG, respectively and 2 qac-negative isolates showed a four-fold increase of their MBCs for CHDG. After BC stress, MICs for BC and CHDG doubled in 58 % and 83 % of the BC-stressed isolates, respectively, while one qac-positive isolate increased four-fold the MIC for BC. Cross-resistance to antibiotics was assessed by disc diffusion method. Some qac-positive isolates varied their resistance profile, while a blaZ-positive isolate showed a resistant phenotype against ampicillin only after the exposure to the disinfectant. As for qac-positive isolates, one CHDG-stressed and 2 BC-stressed increased their resistance to kanamycin and cefoxitin, respectively. The Congo Red Agar test was carried out to assess the in vitro slime production: all isolates were negative after stress. In conclusion, sub-inhibitory exposure to disinfectants may affect disinfectant and antibiotic susceptibility, the latter in particular for qac-positive isolates and those hosting unexpressed antibiotic resistance genes.
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Affiliation(s)
- Filippo Marzoli
- Department of Veterinary Science, University of Pisa, Viale delle Piagge 2, Pisa, Italy.
| | - Barbara Turchi
- Department of Veterinary Science, University of Pisa, Viale delle Piagge 2, Pisa, Italy.
| | - Francesca Pedonese
- Department of Veterinary Science, University of Pisa, Viale delle Piagge 2, Pisa, Italy.
| | - Beatrice Torracca
- Department of Veterinary Science, University of Pisa, Viale delle Piagge 2, Pisa, Italy.
| | - Fabrizio Bertelloni
- Department of Veterinary Science, University of Pisa, Viale delle Piagge 2, Pisa, Italy.
| | - Giovanni Cilia
- Department of Veterinary Science, University of Pisa, Viale delle Piagge 2, Pisa, Italy.
| | - Domenico Cerri
- Department of Veterinary Science, University of Pisa, Viale delle Piagge 2, Pisa, Italy.
| | - Filippo Fratini
- Department of Veterinary Science, University of Pisa, Viale delle Piagge 2, Pisa, Italy.
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Fratini F, Forzan M, Turchi B, Mancini S, Alcamo G, Pedonese F, Pistelli L, Najar B, Mazzei M. In Vitro Antibacterial Activity of Manuka ( Leptospermum scoparium J.R. et G. Forst) and winter Savory ( Satureja montana L.) Essential Oils and Their Blends against Pathogenic E. coli Isolates from Pigs. Animals (Basel) 2020; 10:ani10122202. [PMID: 33255500 PMCID: PMC7760075 DOI: 10.3390/ani10122202] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 11/16/2020] [Accepted: 11/19/2020] [Indexed: 11/30/2022] Open
Abstract
Simple Summary Neonatal diarrhoea (ND), post-weaning diarrhoea (PWD) and oedema disease (OD) are particularly important in terms of economic losses in pig farming worldwide. Aetiological agents of these diseases belong to Escherichia coli, in particular to a few serogroups of enterotoxigenic Escherichia coli (ETEC) and enteropathogenic Escherichia coli (EPEC). The necessity for a reduction in antibiotic use, related to the growing antibiotic resistance phenomenon, encourages research in the study of alternative antibacterial substances as antibacterial tools. Essential oils could represent a valid solution. Abstract Neonatal diarrhoea (ND), post-weaning diarrhoea (PWD) and oedema disease (OD) are among the most important diseases affecting pig farming due to economic losses. Among the main aetiological agents, strains of Escherichia coli are identified as the major responsible pathogens involved. Several strategies have been put in place to prevent these infections and, today, research is increasingly studying alternative methods to antibiotics to reduce the antibiotic resistance phenomenon. Essential oils (EOs) are among the alternative tools that are being investigated. In this study, the in vitro effectiveness of winter savory and manuka essential oils and their mixtures in different proportions against strains of E. coli isolated from episodes of disease in pigs was evaluated. The EOs alone demonstrated slight antibacterial effectiveness, whereas the blends, by virtue of their synergistic action, showed remarkable activity, especially the 70%–30% winter savory–manuka blend, showing itself as a potential tool for prevention and therapy.
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Affiliation(s)
- Filippo Fratini
- Department of Veterinary Sciences, University of Pisa, Viale delle Piagge 2, 56124 Pisa, Italy; (M.F.); (B.T.); (S.M.); (G.A.); (F.P.); (M.M.)
- Correspondence: ; Tel.: +39-050-2216959
| | - Mario Forzan
- Department of Veterinary Sciences, University of Pisa, Viale delle Piagge 2, 56124 Pisa, Italy; (M.F.); (B.T.); (S.M.); (G.A.); (F.P.); (M.M.)
| | - Barbara Turchi
- Department of Veterinary Sciences, University of Pisa, Viale delle Piagge 2, 56124 Pisa, Italy; (M.F.); (B.T.); (S.M.); (G.A.); (F.P.); (M.M.)
| | - Simone Mancini
- Department of Veterinary Sciences, University of Pisa, Viale delle Piagge 2, 56124 Pisa, Italy; (M.F.); (B.T.); (S.M.); (G.A.); (F.P.); (M.M.)
| | - Giuseppe Alcamo
- Department of Veterinary Sciences, University of Pisa, Viale delle Piagge 2, 56124 Pisa, Italy; (M.F.); (B.T.); (S.M.); (G.A.); (F.P.); (M.M.)
| | - Francesca Pedonese
- Department of Veterinary Sciences, University of Pisa, Viale delle Piagge 2, 56124 Pisa, Italy; (M.F.); (B.T.); (S.M.); (G.A.); (F.P.); (M.M.)
| | - Luisa Pistelli
- Department of Pharmacy, University of Pisa, Via Bonanno 6, 56126 Pisa, Italy; (L.P.); (B.N.)
| | - Basma Najar
- Department of Pharmacy, University of Pisa, Via Bonanno 6, 56126 Pisa, Italy; (L.P.); (B.N.)
| | - Maurizio Mazzei
- Department of Veterinary Sciences, University of Pisa, Viale delle Piagge 2, 56124 Pisa, Italy; (M.F.); (B.T.); (S.M.); (G.A.); (F.P.); (M.M.)
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Pedonese F, Torracca B, Mancini S, Pisano S, Turchi B, Cerri D, Nuvoloni R. Effect of a Lactobacillus sakei and Staphylococcus xylosus protective culture on Listeria monocytogenes growth and quality traits of Italian fresh sausage (salsiccia) stored at abusive temperature. Italian Journal of Animal Science 2020. [DOI: 10.1080/1828051x.2020.1844084] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Francesca Pedonese
- Dipartimento di Scienze Veterinarie, Università di Pisa, Pisa 56124, Italy
| | - Beatrice Torracca
- Dipartimento di Scienze Veterinarie, Università di Pisa, Pisa 56124, Italy
| | - Simone Mancini
- Dipartimento di Scienze Veterinarie, Università di Pisa, Pisa 56124, Italy
| | - Sonia Pisano
- Dipartimento di Scienze Veterinarie, Università di Pisa, Pisa 56124, Italy
| | - Barbara Turchi
- Dipartimento di Scienze Veterinarie, Università di Pisa, Pisa 56124, Italy
| | - Domenico Cerri
- Dipartimento di Scienze Veterinarie, Università di Pisa, Pisa 56124, Italy
| | - Roberta Nuvoloni
- Dipartimento di Scienze Veterinarie, Università di Pisa, Pisa 56124, Italy
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11
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Marotta F, Di Marcantonio L, Janowicz A, Pedonese F, Di Donato G, Ardelean A, Nuvoloni R, Di Giannatale E, Garofolo G. Genotyping and Antibiotic Resistance Traits in Campylobacter jejuni and coli From Pigs and Wild Boars in Italy. Front Cell Infect Microbiol 2020; 10:592512. [PMID: 33178635 PMCID: PMC7593542 DOI: 10.3389/fcimb.2020.592512] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Accepted: 09/25/2020] [Indexed: 11/16/2022] Open
Abstract
The present study investigated the genomic constitution and antimicrobial resistance (AMR) of 238 Campylobacter from pigs and wild boars in Italy between 2012 and 2019. Campylobacter strains were genotyped using multilocus sequence typing (MLST) and whole genome MLST (wgMLST), screened for antimicrobial resistance genes, and tested for phenotypic susceptibility to six different antibiotics. C. coli was detected in 98.31% and 91.66% of pigs and wild boars, while C. jejuni was isolated in the remaining cases. MLST assigned 73 STs and 13 STs in pigs and wild boars, respectively, including 44 novel STs. The predominant ST in pigs was ST-854 (12.36%), followed by ST-9264 (6.18%). ST-1055 and ST-1417 were predominant in wild boars (30% and 13.33%, respectively). The minimum spanning tree using 1,121 global MLST profiles showed specific Italian clusters and a clear separation between pig and wild boar profiles. The wgMLST confirmed the MLST clustering and revealed a high genetic diversity within C. coli population in Italy. Minimum inhibitory concentrations (MIC) of six antibiotics revealed higher resistance in pigs to ciprofloxacin, nalidixic acid, streptomycin and tetracycline, compared to wild boar. In contrast, most strains were susceptible to gentamicin. Worrying levels of multidrug resistance (MDR) were observed mostly in pig isolates. Molecular screening of AMR mechanisms revealed the predominance of gyrA T86I substitution among fluoroquinolone- and quinolone-resistant isolates, and the 23S rRNA A2075G mutation among macrolide-resistant isolates. Other resistance determinants were observed: (i) tet(O) gene was present among tetracycline-resistant isolates; (ii) rpsL and aph(3’)-III genes conferring resistance to aminoglycosides, were identified only in streptomycin or gentamicin-resistant pig isolates; (iii) cmeA, cmeB, cmeC, cmeR genes responsible of pump efflux mechanisms, were observed in almost all the strains; (iv) OXA-61, encoding β-lactamase, was found in the half of the strains. Genotypic and phenotypic AMR profiling was fairly correlated for quinolones/fluoroquinolones. Campylobacter infection is common also in wild boar populations in Italy, suggesting that wild boars could be a reservoir of resistant and multi-resistant Campylobacter species, which may be of public health concern. The present study adds to our knowledge on the epidemiological and ecological traits of this pathogen in domesticated and wild swine.
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Affiliation(s)
- Francesca Marotta
- National Reference Laboratory for Campylobacter, Istituto Zooprofilattico Sperimentale dell'Abruzzo e del Molise "G. Caporale", Teramo, Italy
| | - Lisa Di Marcantonio
- National Reference Laboratory for Campylobacter, Istituto Zooprofilattico Sperimentale dell'Abruzzo e del Molise "G. Caporale", Teramo, Italy
| | - Anna Janowicz
- National Reference Laboratory for Campylobacter, Istituto Zooprofilattico Sperimentale dell'Abruzzo e del Molise "G. Caporale", Teramo, Italy
| | | | - Guido Di Donato
- National Reference Laboratory for Campylobacter, Istituto Zooprofilattico Sperimentale dell'Abruzzo e del Molise "G. Caporale", Teramo, Italy
| | - Adrian Ardelean
- Institute for Diagnosis and Animal Health, National Reference for TSEs and Anatomic Pathology Laboratory, Bucharest, Romania
| | - Roberta Nuvoloni
- Department of Veterinary Sciences, University of Pisa, Pisa, Italy
| | - Elisabetta Di Giannatale
- National Reference Laboratory for Campylobacter, Istituto Zooprofilattico Sperimentale dell'Abruzzo e del Molise "G. Caporale", Teramo, Italy
| | - Giuliano Garofolo
- National Reference Laboratory for Campylobacter, Istituto Zooprofilattico Sperimentale dell'Abruzzo e del Molise "G. Caporale", Teramo, Italy
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12
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Mancini S, Mattioli S, Nuvoloni R, Pedonese F, Dal Bosco A, Paci G. Effects of Garlic Powder and Salt on Meat Quality and Microbial Loads of Rabbit Burgers. Foods 2020; 9:foods9081022. [PMID: 32751777 PMCID: PMC7466223 DOI: 10.3390/foods9081022] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 07/22/2020] [Accepted: 07/28/2020] [Indexed: 01/09/2023] Open
Abstract
The aim of the research study was to evaluate the effects of a common culinary spice such as garlic powder and salt addition on the quality and microbial shelf life of rabbit meat burgers. Rabbit burgers were evaluated for pH, the colour parameters, the water holding capacity and microbial loads during storage time of seven days at 4 °C. Four different formulations of burgers (n = 180 in total) were tested as control samples (only meat, C), burgers with garlic powder (at 0.25%, G), burgers with salt (at 1.00%, S) and burgers with both garlic powder and salt (0.25% and 1.00%, respectively, GS). As results, it was highlighted that garlic powder and salt addition significant affected pH, water holding capacity and some colour parameters of burgers. In particular, salt affected the pH of the raw burgers, leading to lower values that partially influenced all the colour parameters with higher a* values of S burgers. The mix of garlic powder and salt (GS burgers) showed mixed effects even if more closed to the G burgers than S ones. Salt expressed its properties of binding water molecules reducing drip and cooking losses in S and GS burgers. No variations in microbial loads were highlighted in relation to the formulations. Storage time affected all the parameters, highlighting a deterioration of the burgers’ quality and an increase of the microbial loads.
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Affiliation(s)
- Simone Mancini
- Department of Veterinary Sciences, University of Pisa, Viale delle Piagge 2, 56124 Pisa, Italy; (R.N.); (F.P.); (G.P.)
- Correspondence:
| | - Simona Mattioli
- Department of Agricultural, Food and Environmental Science, University of Perugia, Borgo XX Giugno 74, 06100 Perugia, Italy; (S.M.); (A.D.B.)
| | - Roberta Nuvoloni
- Department of Veterinary Sciences, University of Pisa, Viale delle Piagge 2, 56124 Pisa, Italy; (R.N.); (F.P.); (G.P.)
- Interdepartmental Research Center “Nutraceuticals and Food for Health”, University of Pisa, Via del Borghetto 80, 56124 Pisa, Italy
| | - Francesca Pedonese
- Department of Veterinary Sciences, University of Pisa, Viale delle Piagge 2, 56124 Pisa, Italy; (R.N.); (F.P.); (G.P.)
- Interdepartmental Research Center “Nutraceuticals and Food for Health”, University of Pisa, Via del Borghetto 80, 56124 Pisa, Italy
| | - Alessandro Dal Bosco
- Department of Agricultural, Food and Environmental Science, University of Perugia, Borgo XX Giugno 74, 06100 Perugia, Italy; (S.M.); (A.D.B.)
| | - Gisella Paci
- Department of Veterinary Sciences, University of Pisa, Viale delle Piagge 2, 56124 Pisa, Italy; (R.N.); (F.P.); (G.P.)
- Interdepartmental Research Center “Nutraceuticals and Food for Health”, University of Pisa, Via del Borghetto 80, 56124 Pisa, Italy
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Mancini S, Mattioli S, Nuvoloni R, Pedonese F, Dal Bosco A, Paci G. Effects of garlic powder and salt additions on fatty acids profile, oxidative status, antioxidant potential and sensory properties of raw and cooked rabbit meat burgers. Meat Sci 2020; 169:108226. [PMID: 32599418 DOI: 10.1016/j.meatsci.2020.108226] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 06/13/2020] [Accepted: 06/15/2020] [Indexed: 02/06/2023]
Abstract
Rabbit burgers were evaluated for fatty acids profile, oxidative status, antioxidant potential and sensory during storage time of seven days at 4 °C. The aim of the research study was to evaluate if a common culinary spice as garlic could overcome the controversy effects of salt (mostly related to a pro-oxidant effect). Therefore, four formulations were made: only meat (control, C) meat added with garlic powder at 0.25% (G), meat added with salt at 1.00% (S) and meat added with garlic powder (0.25%) and salt (1.00%) (GS). As results, it was highlighted that garlic powder was not capable to reduce significantly the negative effect related to the salt addition. Salt induced different modifications to burgers leading to a more liked product due to its properties to enhance sensory characteristics, on the other hand, induced different oxidation processes that could decrease the nutritional value. Further studies are needed to better elucidate if different garlic products/concentrations could apport higher beneficial effects.
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Affiliation(s)
- Simone Mancini
- Department of Veterinary Science, University of Pisa, Viale delle Piagge 2, Pisa 56124, Italy.
| | - Simona Mattioli
- Department of Agricultural, Food and Environmental Science, University of Perugia, Borgo XX Giugno 74, Perugia 06100, Italy
| | - Roberta Nuvoloni
- Department of Veterinary Science, University of Pisa, Viale delle Piagge 2, Pisa 56124, Italy; Interdepartmental Research Center "Nutraceuticals and Food for Health", University of Pisa, Via del Borghetto 80, Pisa 56124, Italy
| | - Francesca Pedonese
- Department of Veterinary Science, University of Pisa, Viale delle Piagge 2, Pisa 56124, Italy; Interdepartmental Research Center "Nutraceuticals and Food for Health", University of Pisa, Via del Borghetto 80, Pisa 56124, Italy
| | - Alessandro Dal Bosco
- Department of Agricultural, Food and Environmental Science, University of Perugia, Borgo XX Giugno 74, Perugia 06100, Italy
| | - Gisella Paci
- Department of Veterinary Science, University of Pisa, Viale delle Piagge 2, Pisa 56124, Italy; Interdepartmental Research Center "Nutraceuticals and Food for Health", University of Pisa, Via del Borghetto 80, Pisa 56124, Italy
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Pacini MI, Forzan M, Cilia G, Bernardini L, Marzoli F, Pedonese F, Bandecchi P, Fratini F, Mazzei M. Detection of Pseudorabies Virus in Wild Boar Foetus. Animals (Basel) 2020; 10:ani10020366. [PMID: 32102385 PMCID: PMC7070533 DOI: 10.3390/ani10020366] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 02/19/2020] [Accepted: 02/19/2020] [Indexed: 11/16/2022] Open
Abstract
Simple Summary Pseudorabies virus (PRV) is a worldwide pathogen primarily affecting domestic and wild swine. In wild boar, seroprevalence rates are high, but little information is available about the impact of the disease on reproduction in this wild species. Our aim s to investigate the presence of Pseudorabies virus in foetus samples collected from pregnant animals living in an endemic area. A polymerase chain reaction (PCR) positive foetus sample is identified from a seropositive and viral shedding sow. Sequence analysis confirms the molecular result, describing for the first time the viral presence in wild boar foetus, suggesting an additional transmission route. Abstract Pseudorabies, or Aujeszky’s disease, is a notifiable worldwide infection of domestic and feral swine that causes economic losses for the swine industry. In domestic pigs, the virus is responsible for nervous and/or respiratory symptoms; in pregnant sows, it is one of the major causes of stillbirth, mummification, embryonic death, and infertility (SMEDI). It is known that PRV infection in wild boar is associated with low pathogenicity and attenuated or absent symptomatology, but limited information is available about the ability of the virus to infect the foetuses of infected wild boar pregnant sows. Due to scarce information about the reproductive consequences, we investigate the possible intrauterine vertical transmission of the virus in wild boar pregnant sow living in a highly infected area. A number of 54 hunted wild boar were sampled during 2018–2019, and blood, genital and nasal swabs, placenta, and fetuses were collected for serological and molecular investigations. A seroprevalence of 74% (40/54) was detected, while 1/24 pregnant sow and 1/24 pooled foetuses tested positive by PCR (gene gB). This is the first evidence of viral detection in foetuses from seropositive pregnant wild boar. This finding suggests the possible pathogenetic role of PRV on pregnancy in wild boar and the existence of an additional transmission route.
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Pedonese F, Verani G, Torracca B, Turchi B, Felicioli A, Nuvoloni R. Effect of an Italian propolis on the growth of Listeria monocytogenes, Staphylococcus aureus and Bacillus cereus in milk and whey cheese. Ital J Food Saf 2019; 8:8036. [PMID: 31897395 PMCID: PMC6912138 DOI: 10.4081/ijfs.2019.8036] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Accepted: 08/28/2019] [Indexed: 11/22/2022] Open
Abstract
Propolis antimicrobial activity has been limitedly studied in food, particularly in dairy products. We studied the antimicrobial activity of an alcoholic extract of an Italian propolis in sterile skim milk, pasteurized cow's milk, and cow's and goat's whey cheese (ricotta). Following the determination of the minimal inhibitory concentration on Gram+ and Gram- bacteria, the extract was employed at 2 and 5% (P2, P5), using controls with the same ethanol concentrations (E2, E5) and without any addition. In milk trials, Listeria monocytogenes, Staphylococcus aureus, Bacillus cereus, and Pseudomonas fluorescens were tested. P2 and P5 samples registered significant decreases of Gram+ bacteria in skim milk. The same was true for P5 in cows' milk, but only with S. aureus for P2. Ricotta was inoculated with L. monocytogenes, S. aureus and B. cereus and stored at 8.5°C. In cow's milk ricotta, L. monocytogenes counts in P5 were always lower than control during the storage time, significantly so from the 14th day. In goat's ricotta, L. monocytogenes counts in P5 were at least one logarithm lower than E5, whereas the extract didn't show a significant effect on S. aureus and B. cereus. The antimicrobial activity of propolis, particularly on L. monocytogenes, could be employed in ready-to-eat refrigerated dairy products.
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Affiliation(s)
| | - Giada Verani
- Department of Veterinary Sciences, University of Pisa, Italy
| | | | - Barbara Turchi
- Department of Veterinary Sciences, University of Pisa, Italy
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Fratini F, Mancini S, Turchi B, Sparagni D, Al‐Gwad AA, Najar B, Pistelli L, Cerri D, Pedonese F. Antimicrobial activity of three essential oils (cinnamon, manuka, and winter savory), and their synergic interaction, against
Listeria monocytogenes. FLAVOUR FRAG J 2019. [DOI: 10.1002/ffj.3514] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Filippo Fratini
- Department of Veterinary Sciences University of Pisa Pisa Italy
- Interdepartmental Research Centre ‘Nutraceuticals and Food for Health’ University of Pisa Pisa Italy
| | - Simone Mancini
- Department of Veterinary Sciences University of Pisa Pisa Italy
| | - Barbara Turchi
- Department of Veterinary Sciences University of Pisa Pisa Italy
| | | | - Alaa Abd Al‐Gwad
- Department of Food Hygiene and Control Faculty of Veterinary Medicine Suez Canal University Ismailia Egypt
| | - Basma Najar
- Department of Pharmacy University of Pisa Pisa Italy
| | - Luisa Pistelli
- Interdepartmental Research Centre ‘Nutraceuticals and Food for Health’ University of Pisa Pisa Italy
- Department of Pharmacy University of Pisa Pisa Italy
| | - Domenico Cerri
- Department of Veterinary Sciences University of Pisa Pisa Italy
- Interdepartmental Research Centre ‘Nutraceuticals and Food for Health’ University of Pisa Pisa Italy
| | - Francesca Pedonese
- Department of Veterinary Sciences University of Pisa Pisa Italy
- Interdepartmental Research Centre ‘Nutraceuticals and Food for Health’ University of Pisa Pisa Italy
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17
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Mancini S, Nuvoloni R, Pedonese F, Paci G. Effects of garlic powder and salt additions in rabbit meat burgers: Preliminary evaluation. J FOOD PROCESS PRES 2019. [DOI: 10.1111/jfpp.13894] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Simone Mancini
- Department of Veterinary Science University of Pisa Pisa Italy
| | - Roberta Nuvoloni
- Department of Veterinary Science University of Pisa Pisa Italy
- Interdepartmental Research Center Nutrafood “Nutraceuticals and Food for Health” University of Pisa Pisa Italy
| | - Francesca Pedonese
- Department of Veterinary Science University of Pisa Pisa Italy
- Interdepartmental Research Center Nutrafood “Nutraceuticals and Food for Health” University of Pisa Pisa Italy
| | - Gisella Paci
- Department of Veterinary Science University of Pisa Pisa Italy
- Interdepartmental Research Center Nutrafood “Nutraceuticals and Food for Health” University of Pisa Pisa Italy
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18
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Pedonese F, Nuvoloni R, Turchi B, Torracca B, Di Giannatale E, Marotta F, Cerri D. Prevalence, phenotypic and genetic diversity of Campylobacter in poultry fresh meat and poultry products on retail sale in Tuscany (Italy). Vet Ital 2018; 53:29-37. [PMID: 28365923 DOI: 10.12834/vetit.836.4107.2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
In this study, the prevalence of Campylobacter spp. in poultry fresh meat and ready‑to‑cook products was evaluated. Seventy‑three samples were collected at retail level from supermarkets and discount stores, obtaining 61.6% positivity. Of 133 Campylobacter isolates, 86 strains (Campylobacter coli, 58.1% and Campylobacter jejuni, 41.9%) were selected for characterisation on the basis of their SmaI and kpnI pulsed field gel‑electrophoresis (PFGE) profiles, to exclude clonal replicates. Campylobacters resulted highly resistant to tetracycline, ciprofloxacin, and nalidixic acid (79.1%, 72.1% and 65.1%, respectively); 50% of C. coli and 13.9% of C. jejuni were resistant to ciprofloxacin and erythromycin, the most important antimicrobials for human campylobacteriosis therapy. Five C. coli were resistant to 5/7 of the tested antimicrobials. HS4c was the prevailing C. jejuni serotype group (22.3%), whereas 8 other serotypes were identified in low percentages. SmaI and kpnI profiles showed a wide variability. The survey showed a high Campylobacter contamination of poultry meat and poultry products at retail level in Tuscany, Italy. A wide strains' heterogeneity and a remarkable level of strains' antimicrobial resistance have been reported, confirming the need for an improvement of specific preventive measures along the production chain.
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Affiliation(s)
- Francesca Pedonese
- Dipartimento di Scienze Veterinarie, Università di Pisa, Viale delle Piagge 2, 56124 Pisa, Italy
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19
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Pedonese F, Fratini F, Pistelli L, Porta FM, Ciccio PD, Fischetti R, Turchi B, Nuvoloni R. Antimicrobial activity of four essential oils against pigmenting Pseudomonas fluorescens and biofilmproducing Staphylococcus aureus of dairy origin. Ital J Food Saf 2017; 6:6939. [PMID: 29564238 PMCID: PMC5850063 DOI: 10.4081/ijfs.2017.6939] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 09/11/2017] [Accepted: 09/12/2017] [Indexed: 11/23/2022] Open
Abstract
Essential oils (EOs) are mixtures of secondary metabolites of plant origin with many useful properties, among which the antimicrobial activity is also of interest for the food industry. EOs can exert their antimicrobial potential both directly, in food products and active packaging, and indirectly, as sanitizing and anti-biofilm agents of food facility surfaces. Aim of this research was to evaluate the antimicrobial activity of four EOs (bergamot, cinnamon, manuka and thyme) against Pseudomonas fluorescens and Staphylococcus aureus isolated from milk and dairy products. The chemical composition of EOs was evaluated by Gas Chromatography-Mass Spectrometry analysis. Minimum Inhibitory Concentration values were determined by a microplate method against 9 Ps. fluorescens from marketed mozzarella with blue discoloration defect, and 3 biofilm-producing S. aureus from milk. Reference ATCC strains were included. Pigment production activity by Ps. fluorescens was assessed both in culture and in cheese. EOs of manuka (leptospermone 23%) and thyme (carvacrol 30%, pcymene 20%, thymol 15%) showed the highest antimicrobial activity against S. aureus, MIC values were 0.012%-0.024% and 0.024% v/v, respectively; meanwhile EOs from thyme and cinnamon (cinnamaldehyde 55%) exhibited the best activity against Ps. fluorescens with MIC values of 0.098%-0.195% and 0.195%-0.391% v/v, respectively. The antimicrobial activity of these EOs is promising and they could be exploited in the dairy production chain.
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Affiliation(s)
| | | | | | | | | | - Roberto Fischetti
- Institute for Experimental Veterinary Medicine of Lazio and Tuscany, Pisa, Italy
| | - Barbara Turchi
- Department of Veterinary Sciences, University of Pisa, Pisa
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Vergara A, Normanno G, Di Ciccio P, Pedonese F, Nuvoloni R, Parisi A, Santagada G, Colagiorgi A, Zanardi E, Ghidini S, Ianieri A. Biofilm Formation and Its Relationship with the Molecular Characteristics of Food-Related Methicillin-ResistantStaphylococcus aureus(MRSA). J Food Sci 2017; 82:2364-2370. [DOI: 10.1111/1750-3841.13846] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 07/18/2017] [Accepted: 07/21/2017] [Indexed: 11/29/2022]
Affiliation(s)
- Alberto Vergara
- Specialization School of Inspection of Foods of Animal Origin “G. Tiecco,” Faculty of Veterinary Medicine; Univ. of Teramo; Piano D'Accio Teramo Italy
| | - Giovanni Normanno
- Dept. of Science of Agriculture, Food and the Environment (SAFE); Univ. of Foggia; via Napoli 25 - 71121 Foggia Italy
| | | | - Francesca Pedonese
- Dept. of Veterinary Sciences; Univ. of Pisa; Viale delle Piagge 2 - 56124 Pisa Italy
| | - Roberta Nuvoloni
- Dept. of Veterinary Sciences; Univ. of Pisa; Viale delle Piagge 2 - 56124 Pisa Italy
| | - Antonio Parisi
- Experimental Zooprophylactic Inst. of Apulia and Basilicata; via Manfredonia 20 -71121 Foggia Italy
| | - Gianfranco Santagada
- Experimental Zooprophylactic Inst. of Apulia and Basilicata; via Manfredonia 20 -71121 Foggia Italy
| | - Angelo Colagiorgi
- Food and Drug Dept.; Univ. of Parma; via del Taglio 10 - 43126 Parma Italy
| | - Emanuela Zanardi
- Food and Drug Dept.; Univ. of Parma; via del Taglio 10 - 43126 Parma Italy
| | - Sergio Ghidini
- Food and Drug Dept.; Univ. of Parma; via del Taglio 10 - 43126 Parma Italy
| | - Adriana Ianieri
- Food and Drug Dept.; Univ. of Parma; via del Taglio 10 - 43126 Parma Italy
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21
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D'amico P, Vitelli N, Cenci Goga B, Nucera D, Pedonese F, Guidi A, Armani A. Meat from cattle slaughtered without stunning sold in the conventional market without appropriate labelling: A case study in Italy. Meat Sci 2017; 134:1-6. [PMID: 28738224 DOI: 10.1016/j.meatsci.2017.07.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Revised: 07/06/2017] [Accepted: 07/17/2017] [Indexed: 10/19/2022]
Abstract
In the European Union, slaughter without stunning is allowed for religious slaughter to obtain halal and kosher meat. Especially in the case of Jewish slaughtering, cuts which are not deemed as kosher are sold to regular market without any specific labelling. This survey, conducted in Tuscany in 2016, aimed to quantify the carcasses rejected in relation to the type of religious slaughter. 656 bovines were slaughtered without stunning: 538 (82%) for halal and 118 (18%) for kosher. All carcasses slaughtered by the Islamic procedure (dhabiha) were considered halal, while 77.1% of carcasses slaughtered by the Jewish procedure (shechita) did not pass the approval. Carcasses were rejected after chest cavity inspection (50%) and after the lungs control (50%). This study provides an important insight in this field and postulates how to amalgamate the concepts of freedom of religion, as enshrined by the Charter of Fundamental Rights of the EU, with consumer rights and animal welfare.
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Affiliation(s)
- Priscilla D'amico
- Department of Veterinary Sciences, University of Pisa, Viale delle Piagge 2, 56124 Pisa, Italy
| | - Nicolò Vitelli
- Department of Veterinary Sciences, University of Pisa, Viale delle Piagge 2, 56124 Pisa, Italy
| | - Beniamino Cenci Goga
- Department of Veterinary Medicine, University of Perugia, Via San Costanzo, 4, 06126 Perugia, Italy
| | - Daniele Nucera
- Department of Agriculture, Forest and Food Science, University of Turin, Largo Braccini 2, 10095, Grugliasco, Torino, Italy
| | - Francesca Pedonese
- Department of Veterinary Sciences, University of Pisa, Viale delle Piagge 2, 56124 Pisa, Italy
| | - Alessandra Guidi
- Department of Veterinary Sciences, University of Pisa, Viale delle Piagge 2, 56124 Pisa, Italy
| | - Andrea Armani
- Department of Veterinary Sciences, University of Pisa, Viale delle Piagge 2, 56124 Pisa, Italy.
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Stella S, Soncini G, Ziino G, Panebianco A, Pedonese F, Nuvoloni R, Di Giannatale E, Colavita G, Alberghini L, Giaccone V. Prevalence and quantification of thermophilic Campylobacter spp. in Italian retail poultry meat: Analysis of influencing factors. Food Microbiol 2017; 62:232-238. [DOI: 10.1016/j.fm.2016.10.028] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Revised: 10/13/2016] [Accepted: 10/14/2016] [Indexed: 11/17/2022]
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Russo C, Balloni S, Altomonte I, Martini M, Nuvoloni R, Cecchi F, Pedonese F, Salari F, Sant’ana Da Silva AM, Torracca B, Profumo A. Fatty acid and microbiological profile of the meat (longissimus dorsi muscle) of wild boar (Sus scropha scropha) hunted in Tuscany. Italian Journal of Animal Science 2016. [DOI: 10.1080/1828051x.2016.1261006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Claudia Russo
- Dipartimento di Scienze Veterinarie, Università di Pisa, Pisa, Italy
- CIRSeMAF, Università di Firenze, Firenze, Italy
- Centro Interdipartimentale di Ricerca "Nutraceutica e Alimentazione per la Salute" Università di Pisa, Pisa, Italy
| | - Sara Balloni
- Dipartimento di Scienze Veterinarie, Università di Pisa, Pisa, Italy
| | - Iolanda Altomonte
- Dipartimento di Scienze Veterinarie, Università di Pisa, Pisa, Italy
| | - Mina Martini
- Dipartimento di Scienze Veterinarie, Università di Pisa, Pisa, Italy
- Centro Interdipartimentale di Ricerca "Nutraceutica e Alimentazione per la Salute" Università di Pisa, Pisa, Italy
| | - Roberta Nuvoloni
- Dipartimento di Scienze Veterinarie, Università di Pisa, Pisa, Italy
- Centro Interdipartimentale di Ricerca "Nutraceutica e Alimentazione per la Salute" Università di Pisa, Pisa, Italy
| | - Francesca Cecchi
- Dipartimento di Scienze Veterinarie, Università di Pisa, Pisa, Italy
| | - Francesca Pedonese
- Dipartimento di Scienze Veterinarie, Università di Pisa, Pisa, Italy
- Centro Interdipartimentale di Ricerca "Nutraceutica e Alimentazione per la Salute" Università di Pisa, Pisa, Italy
| | - Federica Salari
- Dipartimento di Scienze Veterinarie, Università di Pisa, Pisa, Italy
| | | | - Beatrice Torracca
- Dipartimento di Scienze Veterinarie, Università di Pisa, Pisa, Italy
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Torracca B, Pedonese F, López MB, Turchi B, Fratini F, Nuvoloni R. Effect of milk pasteurisation and of ripening in a cave on biogenic amine content and sensory properties of a pecorino cheese. Int Dairy J 2016. [DOI: 10.1016/j.idairyj.2016.05.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Turchi B, Nuvoloni R, Fratini F, Pedonese F, Ebani VV, Cerri D. Caciotta della Garfagnanacheese: selection and evaluation of autochthonous mesophilic lactic acid bacteria as starter cultures. Italian Journal of Animal Science 2016. [DOI: 10.4081/ijas.2011.e22] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Torracca B, Nuvoloni R, Ducci M, Bacci C, Pedonese F. Biogenic Amines Content of Four Types of “Pecorino” Cheese Manufactured in Tuscany. International Journal of Food Properties 2015. [DOI: 10.1080/10942912.2013.877026] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Scarano C, Spanu C, Ziino G, Pedonese F, Dalmasso A, Spanu V, Virdis S, De Santis EPL. Antibiotic resistance of Vibrio species isolated from Sparus aurata reared in Italian mariculture. New Microbiol 2014; 37:329-337. [PMID: 25180847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 12/11/2013] [Accepted: 06/08/2014] [Indexed: 06/03/2023]
Abstract
Extensive use of antimicrobial agents in finfish farming and the consequent selective pressure lead to the acquisition of antibiotic resistance in aquaculture environment bacteria. Vibrio genus represents one of the main pathogens affecting gilthead sea bream. The development of antibiotic resistance by Vibrio represents a potential threat to human health by exchange of resistant genes to human pathogens through food chain. The objective of the present study was to conduct a multisite survey on the antibiotic resistance of Vibrio spp. isolated from gilthead sea bream reared in Italian mariculture. Vibrio spp. strains were isolated from skin, gills, muscles and intestinal content of 240 gilthead sea bream. A random selection of 150 strains was sequenced for species identification. Resistance against 15 antimicrobial agents was tested by the broth microdilution method. Vibrio harveyi and Vibrio alginolyticus accounted for 36.7% and 33.3% of the isolates respectively. 96% of the strains showed multiple resistance to the tested drugs, with two strains, Vibrio aestuarianus and Vibrio harveyi resistant to 10 and 9 antibiotics, respectively. Ampicillin, amoxicillin, erythromycin and sulfadiazine showed low efficacy against Vibrio spp. Rational use of antimicrobial agents and surveillance on antibiotic administration may reduce the acquisition of resistance by microorganisms of aquatic ecosystems.
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Turchi B, Mancini S, Fratini F, Pedonese F, Nuvoloni R, Bertelloni F, Ebani VV, Cerri D. Preliminary evaluation of probiotic potential of Lactobacillus plantarum strains isolated from Italian food products. World J Microbiol Biotechnol 2013; 29:1913-22. [DOI: 10.1007/s11274-013-1356-7] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2012] [Accepted: 04/18/2013] [Indexed: 11/28/2022]
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Nuvoloni R, Nannipieri A, Purini E, Pedonese F, Turchi B, Torracca B, Benini O. CHARACTERISATION OF PGI LARDO DI COLONNATA. Ital J Food Saf 2012. [DOI: 10.4081/ijfs.2012.4.81] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Nuvoloni R, Pedonese F, Fratini F, Torracca B, Turchi B, Serra A, Preziuso G. Microbiological and physicochemical profile of traditional Salsicda toscanaduring storage. Italian Journal of Animal Science 2012. [DOI: 10.4081/ijas.2012.e59] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Forzale F, Giorgi M, Pedonese F, Nuvoloni R, D’Ascenzi C, Rindi S. BIOGENIC AMINE CONTENT IN “PECORINO DEL PARCO DI MIGLIARINO - SAN ROSSORE”. Ital J Food Saf 2011. [DOI: 10.4081/ijfs.2011.1s.149] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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D’Ascenzi C, Pedonese F, Nicodemi L, Nuvoloni R, Forzale F, Rindi S. EFFECTIVENESS OF RISK MANAGEMENT IN DIRECTLY RAW MILK SELLING AT “E. AVANZI” CENTER OF PISA UNIVERSITY. Ital J Food Saf 2010. [DOI: 10.4081/ijfs.2010.7.30] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Nassi R, Nuvoloni R, Forzale F, Pedonese F, Gerardo B, Cambi L, D’Ascenzi C. DÖNER KEBAB RETAILED ON THE LUCCA AREA: RESULTS OF SURVEILLANCE ACTIVITY. Ital J Food Saf 2010. [DOI: 10.4081/ijfs.2010.7.55] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Pedonese F, Innocenti E, Nuvoloni R, Sartini L, D'Ascenzi C, Cerri D, Rindi S. Occurrence of vancomycin-resistant enterococci in foods of animal origin purchased in Tuscany. Vet Res Commun 2005; 29 Suppl 2:347-9. [PMID: 16244991 DOI: 10.1007/s11259-005-0078-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- F Pedonese
- Department of Animal Pathology, Prophylaxis and Food Hygiene, University of Pisa, Viale delle Piagge, 2-56124, Pisa, Italy.
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Mariottini A, Pedonese F, Sartini L, Pecile P. ENTEROCOCCHI VANCOMICINA RESISTENTI ISOLATI NELL’UOMO E IN ALIMENTI DI ORIGINE ANIMALE IN TOSCANA. Microbiol Med 2004. [DOI: 10.4081/mm.2004.3876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Abstract
Microsporum canis is the dermatophyte most commonly responsible for ringworm in cats. The purpose of this paper was to evaluate the in vivo efficacy of oral terbinafine (Lamisil; Sandoz) in the treatment of feline ringworm caused by M canis, and to consider this drug as an alternative to griseofulvin or imidazoles. Fifteen cats infected with M canis were treated orally once daily with 30 mg/kg of terbinafine over a 2-week period. All treated animals were checked for dermatophytes on the last day of treatment, a month later and 3 months after the last administration of the drug. Only 12 cats could be used in the whole trial and 11 of these (92%) showed a complete cure. Terbinafine could be an effective alternative to griseofulvin when fungal resistance or idiosyncrasic intolerance are shown and, compared with griseofulvin, could give a faster rate of cure and less relapses.
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Affiliation(s)
- F Mancianti
- Dipartimento di Patologia Animale, Profilassi ed Igiene degli Alimenti, Università di Pisa, Viale delle Piagge, 2, 56124 Pisa, Italy
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Mancianti F, Pedonese F, Zullino C. Efficacy of oral administration of itraconazole to cats with dermatophytosis caused by Microsporum canis. J Am Vet Med Assoc 1998; 213:993-5. [PMID: 9776995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
OBJECTIVE To determine efficacy of orally administered itraconazole in cats with dermatophytosis caused by Microsporum canis. DESIGN Uncontrolled clinical trial. ANIMALS 15 cats with dermatophytosis caused by M canis. PROCEDURE All cats were treated with itraconazole (1.5 to 3.0 mg/kg [0.7 to 1.4 mg/lb] of body weight, PO, q 24 h, for 15 days). Six cats had been treated with griseofulvin (10 mg/kg [4.5 mg/lb], PO, q 24 h) during a 60-day period, but their clinical condition had not improved. Five cats treated at the highest dosage of itraconazole vomited or became anorectic. Consequently, dosages were progressively decreased for each cat until adverse effects were not evident. After treatment, samples of hair were submitted for fungal cultures, and if appropriate, treatment was repeated when culture results were positive. RESULTS 8 cats treated with itraconazole recovered completely, as indicated by resolution of lesions and negative results of fungal cultures. Six of these 8 cats received a single 15-day course of treatment, whereas the remaining 2 cats needed prolonged treatment (two 15-day courses of treatment and three 15-day courses of treatment). In 4 other cats that became clinically normal, M canis was isolated from hair samples obtained at the completion of treatment, even though only 1 colony or a small number of colonies was isolated. In the other 3 cats, itraconazole did not cause clinical improvement, and culture results remained positive. CLINICAL IMPLICATIONS Oral administration of itraconazole at dosages of 1.5 to 3.0 mg/kg may be useful for the treatment of cats with dermatophytosis attributable to M canis infections.
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Affiliation(s)
- F Mancianti
- Department of Animal Pathology, Faculty of Veterinary Medicine, University of Pisa, Italy
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Mancianti F, Pedonese F, Poli A. Evaluation of dot enzyme-linked immunosorbent assay (dot-ELISA) for the serodiagnosis of canine leishmaniosis as compared with indirect immunofluorescence assay. Vet Parasitol 1996; 65:1-9. [PMID: 8916395 DOI: 10.1016/0304-4017(96)00946-6] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
A dot enzyme-linked immunosorbent assay (dot-ELISA) was developed and compared with a standard indirect immunofluorescence assay (IFA) for the rapid serodiagnosis of canine leishmaniosis. The two tests were used to examine sera from Leishmania infantum-infected and control dogs. Using the dot-ELISA, 137 of 149 sera (91.9%) from infected animals gave a clearly positive reaction, whereas in the standard IFA technique 147 (98.7%) were positive at a reciprocal titer of 40 or over (titer range 40-10,240). Control sera from 75 healthy dogs, not living in endemic areas, and 11 dogs with other diseases (babesiosis, cryptococcosis, ehrlichiosis, dermatitis, and chronic hepatitis) but Leishmania-negative were used to determine the specificity of the assays. All the sera were negative with IFA (100%), whereas using the dot-ELISA only 74 sera (86%) from controls gave a negative result. In the standard IFA no cross-reactivity was noted, in the dot-ELISA a weak cross-reaction was observed with a serum sample from a dog with babesiosis. The interpretation of dot-ELISA could be easily performed by visual inspection of the nitrocellulose disks. The most remarkable feature of dot-ELISA was the high sensitivity (91.9%) and positive predictive value (92.6%), even if the test showed a specificity lower than IFA. Because of its easy performance and high sensitivity, the dot-ELISA may be a useful test to be executed in the field for the diagnosis of canine leishmaniosis.
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Affiliation(s)
- F Mancianti
- Dipartimento di Patologia Animale, Università di Pisa, Italy
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