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Calderaro A, Piccolo G, Zuelli C, Bommezzadri S, Perandin F, Ricci L, Manca N, Dettori G, Chezzi C. CASI DI MALARIA DA P.OVALE A PARMA: DATI DEGLI ULTIMI 5 ANNI. MICROBIOLOGIA MEDICA 2005. [DOI: 10.4081/mm.2005.3681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Medici M, Martinelli M, Valcavi P, Abelli L, Casula F, Dettori G, Chezzi C. LA QUANTIFICAZIONE DEI MARCATORI NELL’INFEZIONE DA HCV. MICROBIOLOGIA MEDICA 2005. [DOI: 10.4081/mm.2005.3446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Rossi S, Zerbini L, Buttrini M, Somenzi P, Menozzi M, Chezzi C, Dettori G. CLOSTRIDIUM PERFRINGENS ENTEROTOSSINOGENICO NELLE INFEZIONI INTESTINALI NON VEICOLATE DA ALIMENTI: PRELIMINARI OSSERVAZIONI A PARMA. MICROBIOLOGIA MEDICA 2005. [DOI: 10.4081/mm.2005.3507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Zerbini L, Rossi S, Somenzi P, Menozzi M, Chezzi C, Dettori G. CARATTERIZZAZIONE DELL’ENTEROTOSSINOGENICITÀ DI CEPPI DI CLOSTRIDIUM PERFRINGENS ISOLATI DURANTE EPISODI DI TOSSINFEZIONE ALIMENTARE. MICROBIOLOGIA MEDICA 2005. [DOI: 10.4081/mm.2005.3494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Medici M, Aloisi A, Martinelli M, Abelli L, Dettori G, Chezzi C. IDENTIFICAZIONE RAPIDA DI CEPPI DI CITOMEGALOVIRUS UMANO FARMACO-RESISTENTI MEDIANTE nPCR-RFLP IN SOGGETTI SOTTOPOSTI A TRAPIANTO. MICROBIOLOGIA MEDICA 2005. [DOI: 10.4081/mm.2005.3650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Calderaro A, Bommezzadri S, Piccolo G, Zuelli C, Dettori G, Chezzi C. Rapid isolation of Brachyspira hyodysenteriae and Brachyspira pilosicoli from pigs. Vet Microbiol 2005; 105:229-34. [PMID: 15708820 DOI: 10.1016/j.vetmic.2004.10.021] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2001] [Revised: 10/07/2004] [Accepted: 10/31/2004] [Indexed: 11/24/2022]
Abstract
The aim of this study was to compare and evaluate the time required to isolate Brachyspira hyodysenteriae and Brachyspira pilosicoli from porcine faeces. This was done using previously described selective media (spectinomycin) S400, (colistin, vancomycin and spectinomycin) CVS and (spectinomycin, vancomycin, colistin, spiramycin and rifampin with swine faecal extract) BJ, compared with the method based on blood agar modified medium, with spectinomycin and rifampin (BAM-SR), including a pre-treatment step. Fourteen spirochaetal strains were obtained in pure cultures after 5 days (48 h in BAM-SR primary plate and three passages every 24 h in brain heart infusion (BHI) without antibiotics) pre-treating simulated samples in brain heart infusion broth with spectinomycin (400 microg/ml) and rifampin (15 microg/ml), before streaking on the selective BAM-SR medium. Spirochaetes from samples in S400, CVS and BJ, with and without pre-treatment, were obtained in pure cultures only after repeatedly transferring on plates of the same selective medium requiring 15-18 days according to the strain. BAM-SR used after the pre-treatment step showed a detection limit ranging from 3.5 x 10(2) to 6.7 x 10(7) cells/g faeces and was the only method able to support the growth of spirochaetes after 48 h.
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Benevento A, Boni L, Dionigi G, Carcano G, Capella C, Capriata G, Casula G, Dettori G, Dionigi R. The mesenteric and antimesenteric location of colorectal cancer: the relationship with lymph nodes. Surgeon 2005; 2:214-20. [PMID: 15570829 DOI: 10.1016/s1479-666x(04)80003-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
AIM Purpose of the study was to evaluate if the circumferential location of colorectal cancer may be identified as a possible prognostic factor. The hypothesis is that tumours located on the antimesenteric (AM) side could have a better prognosis than tumours located on the mesenteric (M) side. METHODS All patients undergoing curative resection for colorectal cancer were enrolled in the study. The specimens were sent to the pathologist to define the exact location of the tumour, the histological type, grading, T, N status as well as lymphatic, vascular and neural invasion, peritumoural lymphoid reaction, desmoplasia and microsatellite instability. Statistical analyses were performed using the test for proportions (with continuity correction), the Pearson Chi-square test and generalised linear models; p<0.05 were considered statistically significant. RESULTS From August 2000 to August 2002, 255 patients were enrolled in the study. There was a significantly higher incidence of tumours located on the M (101) compared with the AM (37) site (p<0.0001). M located tumours were associated with higher numbers of metastatic lymph nodes (N1 and N2; p-value=0.014), whereas AM tumours were associated with involved lymph nodes in only 5/37 (13.5%) of tumours. There was no statistically significant relation between AM versus M location and T status: the Pearson Chi-Square test showed that the lymph node involvement and the location (M versus AM) are not statistically independent variables (p-value=0.014). CONCLUSIONS Our preliminary results show that when M or AM tumour identification is possible, tumour location can be regarded as a prognostic factor. Further longer studies on recurrence rate and survival are required to validate these findings and the clinical usefulness of this putative prognostic factor.
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Pinardi F, Arcangeletti M, De Conto F, Medici M, Valcavi P, Casula F, Ferraglia F, Motta F, Covan S, Calderaro A, Chezzi C, Dettori G. LA MICROSCOPIA ELETTRONICA QUALE UTILE SUPPORTO PER LA DIAGNOSI DI INFEZIONE DA VIRUS ENTERICI. MICROBIOLOGIA MEDICA 2004. [DOI: 10.4081/mm.2004.4019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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34
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Arcangeletti M, De Conto F, Pinardi F, Medici M, Valcavi P, Casula F, Ferraglia F, Motta F, Covan S, Calderaro A, Chezzi C, Dettori G. METODI TRADIZIONALI E MOLECOLARI A CONFRONTO NELLA DIAGNOSI DI INFEZIONE VIRALE. MICROBIOLOGIA MEDICA 2004. [DOI: 10.4081/mm.2004.3972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Zerbini L, Larini S, Rossi S, Bertoncini L, Somenzi P, Menozzi M, Chezzi C, Dettori G. CARATTERIZZAZIONE DELL’ENTEROTOSSINO-GENICITÀ DI CEPPI DI STAPHYLOCOCCUS AUREUS MEDIANTE MULTIPLEX PCR. MICROBIOLOGIA MEDICA 2004. [DOI: 10.4081/mm.2004.3921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Menozzi M, Bertoncini L, Zerbini L, Rossi S, Somenzi P, Chezzi C, Dettori G. ESPERIENZE NELLA GESTIONE DI EPIDEMIE NOSOCOMIALI: POLICLINICO UNIVERSITARIO DI PARMA. MICROBIOLOGIA MEDICA 2004. [DOI: 10.4081/mm.2004.3708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Aloisi A, Martinelli M, Abelli L, Arcangeletti M, Pinardi F, De Conto F, Valcavi P, Casula F, Calderaro A, Chezzi C, Dettori G. DIAGNOSI RAPIDA DI INFEZIONE DA ADENOVIRUS UMANI MEDIANTE REAZIONE POLIMERASICA A CATENA DI TIPO NESTED. MICROBIOLOGIA MEDICA 2004. [DOI: 10.4081/mm.2004.4013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Medici M, Martinelli M, Abelli L, Ruggeri F, Di Bartolo I, Valcavi P, Casula F, Arcangeletti M, Pinardi F, De Conto F, Calderaro A, Dettori G, Chezzi C. CARATTERIZZAZIONE MOLECOLARE DI CEPPI DI NOROVIRUS IDENTIFICATI A PARMA NEL CORSO DEL 2002. MICROBIOLOGIA MEDICA 2004. [DOI: 10.4081/mm.2004.3755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Calderaro A, Piccolo G, Zuelli C, Perandin F, Manca N, Ricci L, Arcangeletti M, Medici M, Dettori G, Chezzi C. VALUTAZIONE DI METODI DI RIFERIMENTO PER LA DIAGNOSI MOLECOLARE DI MALARIA. MICROBIOLOGIA MEDICA 2004. [DOI: 10.4081/mm.2004.3771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Perandin F, Manca N, Calderaro A, Piccolo G, Galati L, Ricci L, Medici M, Arcangeletti M, Snounou G, Dettori G, Chezzi C. UN METODO REAL-TIME PCR PER L’IDENTIFICAZIONE DI PLASMODIUM MALARIAE NEL SANGUE DI PAZIENTI CON MALARIA. MICROBIOLOGIA MEDICA 2004. [DOI: 10.4081/mm.2004.4191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Arcangeletti M, De Conto F, Pinardi F, Medici M, Valcavi P, Casula F, Ferraglia F, Motta F, Covan S, Calderaro A, Chezzi C, Dettori G. DIAGNOSI DI INFEZIONE DA VIRUS DELL’APPARATO RESPIRATORIO: TRE METODI A CONFRONTO. MICROBIOLOGIA MEDICA 2004. [DOI: 10.4081/mm.2004.3971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Calderaro A, Incaprera M, Piccolo G, Arcangeletti M, Medici M, Dettori G, Chezzi C. UN SAGGIO DI “REAL-TIME PCR (TaqMan)” PER LA DIAGNOSI DI LABORATORIO DI LEPTOSPIROSI. MICROBIOLOGIA MEDICA 2004. [DOI: 10.4081/mm.2004.3870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Calderaro A, Piccolo G, Zuelli C, Incaprera M, Arcangeletti M, Medici M, Dettori G, Chezzi C. DESCRIZIONE DEL PRIMO CASO DI LOIASI (FILARIOSI) A PARMA. MICROBIOLOGIA MEDICA 2004. [DOI: 10.4081/mm.2004.3968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Calderaro A, Incaprera M, Bommezzadri S, Piccolo G, Zuelli C, Villanacci V, Arcangeletti M, Medici M, Dettori G, Chezzi C. PARASSITOSI INTESTINALE ASSOCIATA A SPIROCHETOSI INTESTINALE: DESCRIZIONE DEI PRIMI CASI. MICROBIOLOGIA MEDICA 2004. [DOI: 10.4081/mm.2004.3770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Martinelli M, Abelli L, Aloisi A, Arcangeletti M, De Conto F, Pinardi F, Valcavi P, Casula F, Calderaro A, Chezzi C, Dettori G. EPISODIO EPIDEMICO NOSOCOMIALE DI ENTERITE SOSTENUTO DA NOROVIRUS IN PAZIENTI PEDIATRICI RICOVERATI. MICROBIOLOGIA MEDICA 2004. [DOI: 10.4081/mm.2004.4014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Perandin F, Manca N, Calderaro A, Piccolo G, Galati L, Ricci L, Medici MC, Arcangeletti MC, Snounou G, Dettori G, Chezzi C. Development of a real-time PCR assay for detection of Plasmodium falciparum, Plasmodium vivax, and Plasmodium ovale for routine clinical diagnosis. J Clin Microbiol 2004; 42:1214-9. [PMID: 15004078 PMCID: PMC356834 DOI: 10.1128/jcm.42.3.1214-1219.2004] [Citation(s) in RCA: 231] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
A TaqMan-based real-time PCR qualitative assay for the detection of three species of malaria parasites-Plasmodium falciparum, P. ovale, and P. vivax-was devised and evaluated using 122 whole-blood samples from patients who had traveled to areas where malaria is endemic and who presented with malaria-like symptoms and fever. The assay was compared to conventional microscopy and to an established nested-PCR assay. The specificity of the new assay was confirmed by sequencing the PCR products from all the positive samples and by the lack of cross-reactivity with Toxoplasma gondii and Leishmania infantum DNA. Real-time PCR assay showed a detection limit (analytical sensitivity) of 0.7, 4, and 1.5 parasites/ micro l for P. falciparum, P. vivax, and P. ovale, respectively. Real-time PCR, like nested PCR, brought to light errors in the species identification by microscopic examination and revealed the presence of mixed infections (P. falciparum plus P. ovale). Real-time PCR can yield results within 2 h, does not require post-PCR processing, reduces sample handling, and minimizes the risks of contamination. The assay can therefore be easily implemented in routine diagnostic malaria tests. Future studies are warranted to investigate the clinical value of this technique.
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Calderaro A, Piccolo G, Zuelli C, Galati L, Ricci L, Perandin F, Dell'Anna ML, Arcangeletti MC, Medici MC, Manca N, Dettori G, Chezzi C. Evaluation of a new plate hybridization assay for the laboratory diagnosis of imported malaria in Italy. THE NEW MICROBIOLOGICA 2004; 27:163-71. [PMID: 15164627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Abstract
A new molecular diagnostic method "Malaria-IBRIDOGEN" (Amplimedical S.p.A.--Bioline Division, Turin, Italy) based on a plate-hybridization assay for the simultaneous detection and identification of human malaria parasites was evaluated in this study. A target DNA sequence of the plasmodial 18S ribosomal RNA gene was amplified by polymerase chain reaction (PCR) and hybridized in microtiter wells with five biotinylated probes each specific for Plasmodium falciparum, P. vivax, P. malariae, P. ovale and the beta-globine human gene, respectively. Compared to the nested-PCR actually used in our laboratory for the molecular diagnosis of malaria, "Malaria-IBRIDOGEN" revealed an overall sensitivity of 100% (51/51) for the four human Plasmodium species testing 100 whole blood samples from people with malaria-like symptoms and fever. Specificity was 92% (45/49) considering four discordant samples as "false positive" by "Malaria-IBRIDOGEN". The assay showed a threshold of parasite density (detection limit) of 0.07 P. falciparum parasites/microliter, 0.15-1.5 P. vivax parasites/microliter, 0.3 P. malariae parasites/microliter and 0.4 P. ovale parasites/microliter of whole blood, respectively. This assay could be successfully applied to the laboratory diagnosis of malaria as a useful aid to microscopy.
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Arcangeletti MC, De Conto F, Ferraglia F, Pinardi F, Gatti R, Orlandini G, Calderaro A, Motta F, Medici MC, Martinelli M, Valcavi P, Razin SV, Chezzi C, Dettori G. Human cytomegalovirus proteins PP65 and IEP72 are targeted to distinct compartments in nuclei and nuclear matrices of infected human embryo fibroblasts. J Cell Biochem 2003; 90:1056-67. [PMID: 14624464 DOI: 10.1002/jcb.10655] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The cellular distribution of the human cytomegalovirus (HCMV)-specific UL83 phosphoprotein (pp65) and UL123 immediate-early protein (IEp72) in lytically infected human embryo fibroblasts was studied by means of indirect immunofluorescence and confocal microscopy. Both proteins were found to have a nuclear localization, but they were concentrated in different compartments within the nuclei. The pp65 was located predominantly in the nucleoli; this was already evident with the parental viral protein, which was targeted to the above nuclear compartment very soon after infection. The nucleolar localization of pp65 was also observed at later stages of the HCMV infectious cycle. After chromatin extraction (in the so-called in situ nuclear matrices), a significant portion of the pp65 remained associated with nucleoli within the first hour after infection, then gradually redistributed in a perinucleolar area, as well as throughout the nucleus, with a granular pattern. A quite different distribution was observed for IEp72 at very early stages after infection of human embryo fibroblasts with HCMV; indeed, this viral protein was found in bright foci, clearly observable in both non-extracted nuclei and in nuclear matrices. At later stages of infection, IEp72 became almost homogeneously distributed within the whole nucleus, while the foci increased in size and were more evenly spread; in several infected cells some of them lay within nucleoli. This peculiar nuclear distribution of IEp72 was preserved in nuclear matrices as well. The entire set of data is discussed in terms of the necessity of integration for HCMV-specific products into the pre-existing nuclear architecture, with the possibility of subsequent adaptation of nuclear compartments to fit the needs of the HCMV replicative cycle.
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Medici M, Martinelli M, Abelli L, Arcangeletti M, Pinardi F, De Conto F, Valcavi P, Calderaro A, Dettori G, Chezzi C. PREVALENZA DI INFEZIONE DA NOROVIRUS NELL’AREA DI PARMA. MICROBIOLOGIA MEDICA 2003. [DOI: 10.4081/mm.2003.4377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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50
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Calderaro A, Bommezzadri S, Incaprera M, Piccolo G, Zuelli C, Guégan R, Villanacci V, Pirali F, Viviani G, Arcangeletti M, Medici M, Dettori G, Chezzi C. DIAGNOSI DI LABORATORIO DI AMEBIASI MEDIANTE REAZIONE POLIMERASICA A CATENA (PCR). MICROBIOLOGIA MEDICA 2003. [DOI: 10.4081/mm.2003.4222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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