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Intra J, Ippolito S, Lorenzini F, Mauro A, Mazzitello MC, Melzi S, Cappellani A, Cappellini F, Casati M. Elevated urine norepinephrine levels and alcohol use: A relationship that should be not neglected. Clin Biochem 2024; 123:110704. [PMID: 38158170 DOI: 10.1016/j.clinbiochem.2023.110704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 12/20/2023] [Accepted: 12/21/2023] [Indexed: 01/03/2024]
Affiliation(s)
- Jari Intra
- Clinical Chemistry Laboratory, Fondazione IRCCS San Gerardo dei Tintori, Monza, Italy.
| | - Silvia Ippolito
- Clinical Chemistry Laboratory, Fondazione IRCCS San Gerardo dei Tintori, Monza, Italy
| | - Franco Lorenzini
- Clinical Chemistry Laboratory, Fondazione IRCCS San Gerardo dei Tintori, Monza, Italy
| | - Antonio Mauro
- Clinical Chemistry Laboratory, Fondazione IRCCS San Gerardo dei Tintori, Monza, Italy
| | | | - Stefano Melzi
- Clinical Chemistry Laboratory, Fondazione IRCCS San Gerardo dei Tintori, Monza, Italy
| | - Adele Cappellani
- Clinical Chemistry Laboratory, Fondazione IRCCS San Gerardo dei Tintori, Monza, Italy
| | - Fabrizio Cappellini
- Clinical Chemistry Laboratory, Fondazione IRCCS San Gerardo dei Tintori, Monza, Italy
| | - Marco Casati
- Clinical Chemistry Laboratory, Fondazione IRCCS San Gerardo dei Tintori, Monza, Italy
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Centemeri R, Riva MA, Belingheri M, Paladino ME, D’Orso MI, Intra J. The Evaluation of the Balance Test and MuscleLab Test for the Early Detection of Femoroacetabular Impingement. J Funct Morphol Kinesiol 2023; 8:159. [PMID: 37987495 PMCID: PMC10660461 DOI: 10.3390/jfmk8040159] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 11/06/2023] [Accepted: 11/07/2023] [Indexed: 11/22/2023] Open
Abstract
Femoroacetabular impingement (FAI) is a common source of hip pain affecting a wide range of subjects. In this work, we assessed two tests, namely the balance test and the MuscleLab test, in comparison with the flexion-abduction-external rotation (FABER) and flexion-adduction-internal rotation (FADIR) tests, in order to evaluate the functionality of the neural-musculoskeletal system of the subjects affected by FAI based on the measurement of biomechanical parameters. Our goal was to investigate the early detection of an altered hip joint and to monitor pathology progression over time. A total of 52 subjects, 29 females and 23 males, with an average age of 42 ± 13 years presenting hip impingement diagnosed using X-ray, were enrolled. Twenty-eight patients without signs of hip impingements were used as the control group. The balance test, which evaluates the capacity of a person to keep the orthostatic position against terrestrial gravity, and the MuscleLab test, which measures the force and power generated by active muscles during a movement, as well as FABER and FADIR tests, were performed in each subject. The balance and MuscleLab tests presented 100% sensitivity and higher sensitivity in FAI diagnosis, with 72.9% and 70.4%, respectively, in comparison with those obtained using FABER and FADIR tests, with 59.6% and 67.3%, respectively. The evaluation of the neural-musculoskeletal system using the balance and MuscleLab tests can help in the early detection of the severity of hip impingements and the assessment of non-operative treatments used over time.
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Affiliation(s)
- Roberto Centemeri
- Department of Occupational Health, University of Milano-Bicocca, Fondazione IRCCS San Gerardo dei Tintori, 20900 Monza, Italy; (R.C.); (M.A.R.); (M.B.); (M.E.P.); (M.I.D.)
| | - Michele Augusto Riva
- Department of Occupational Health, University of Milano-Bicocca, Fondazione IRCCS San Gerardo dei Tintori, 20900 Monza, Italy; (R.C.); (M.A.R.); (M.B.); (M.E.P.); (M.I.D.)
| | - Michael Belingheri
- Department of Occupational Health, University of Milano-Bicocca, Fondazione IRCCS San Gerardo dei Tintori, 20900 Monza, Italy; (R.C.); (M.A.R.); (M.B.); (M.E.P.); (M.I.D.)
| | - Maria Emilia Paladino
- Department of Occupational Health, University of Milano-Bicocca, Fondazione IRCCS San Gerardo dei Tintori, 20900 Monza, Italy; (R.C.); (M.A.R.); (M.B.); (M.E.P.); (M.I.D.)
| | - Marco Italo D’Orso
- Department of Occupational Health, University of Milano-Bicocca, Fondazione IRCCS San Gerardo dei Tintori, 20900 Monza, Italy; (R.C.); (M.A.R.); (M.B.); (M.E.P.); (M.I.D.)
| | - Jari Intra
- Clinical Chemistry Laboratory, Fondazione IRCCS San Gerardo dei Tintori, 20900 Monza, Italy
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Carcione D, Intra J, Andriani L, Campanile F, Gona F, Carletti S, Mancini N, Brigante G, Cattaneo D, Baldelli S, Chisari M, Piccirilli A, Di Bella S, Principe L. New Antimicrobials for Gram-Positive Sustained Infections: A Comprehensive Guide for Clinicians. Pharmaceuticals (Basel) 2023; 16:1304. [PMID: 37765112 PMCID: PMC10536666 DOI: 10.3390/ph16091304] [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: 08/08/2023] [Revised: 08/30/2023] [Accepted: 09/11/2023] [Indexed: 09/29/2023] Open
Abstract
Antibiotic resistance is a public health problem with increasingly alarming data being reported. Gram-positive bacteria are among the protagonists of severe nosocomial and community infections. The objective of this review is to conduct an extensive examination of emerging treatments for Gram-positive infections including ceftobiprole, ceftaroline, dalbavancin, oritavancin, omadacycline, tedizolid, and delafloxacin. From a methodological standpoint, a comprehensive analysis on clinical trials, molecular structure, mechanism of action, microbiological targeting, clinical use, pharmacokinetic/pharmacodynamic features, and potential for therapeutic drug monitoring will be addressed. Each antibiotic paragraph is divided into specialized microbiological, clinical, and pharmacological sections, including detailed and appropriate tables. A better understanding of the latest promising advances in the field of therapeutic options could lead to the development of a better approach in managing antimicrobial therapy for multidrug-resistant Gram-positive pathogens, which increasingly needs to be better stratified and targeted.
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Affiliation(s)
- Davide Carcione
- Laboratory of Medicine and Microbiology, Busto Arsizio Hospital—ASST Valle Olona, 21052 Busto Arsizio, VA, Italy; (D.C.); (G.B.)
| | - Jari Intra
- Clinical Chemistry Laboratory, Fondazione IRCCS San Gerardo Dei Tintori, 20900 Monza, MB, Italy;
| | - Lilia Andriani
- Clinical Pathology and Microbiology Unit, Hospital of Sondrio, 23100 Sondrio, Italy;
| | - Floriana Campanile
- Department of Biomedical and Biotechnological Sciences, Section of Microbiology, University of Catania, 95123 Catania, Italy;
| | - Floriana Gona
- Laboratory of Microbiology and Virology, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy; (F.G.); (S.C.)
| | - Silvia Carletti
- Laboratory of Microbiology and Virology, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy; (F.G.); (S.C.)
| | - Nicasio Mancini
- Laboratory of Medical Microbiology and Virology, Department of Medicine and Technological Innovation, University of Insubria, 21100 Varese, Italy;
- Laboratory of Medical Microbiology and Virology, Fondazione Macchi University Hospital, 21100 Varese, Italy
| | - Gioconda Brigante
- Laboratory of Medicine and Microbiology, Busto Arsizio Hospital—ASST Valle Olona, 21052 Busto Arsizio, VA, Italy; (D.C.); (G.B.)
| | - Dario Cattaneo
- Department of Infectious Diseases ASST Fatebenefratelli Sacco, 20157 Milan, Italy;
| | - Sara Baldelli
- Pharmacology Laboratory, Clinical Chemistry Laboratory, Diagnostic Department, ASST Spedali Civili, 25123 Brescia, Italy;
| | - Mattia Chisari
- Microbiology and Virology Unit, Great Metropolitan Hospital “Bianchi-Melacrino-Morelli”, 89100 Reggio Calabria, Italy;
| | - Alessandra Piccirilli
- Department of Biotechnological and Applied Clinical Sciences, University of L’Aquila, 67100 L’Aquila, Italy;
| | - Stefano Di Bella
- Clinical Department of Medical, Surgical, and Health Sciences, Trieste University, 34129 Trieste, Italy;
| | - Luigi Principe
- Microbiology and Virology Unit, Great Metropolitan Hospital “Bianchi-Melacrino-Morelli”, 89100 Reggio Calabria, Italy;
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Iezzi P, Cappellini F, Intra J, Carnicelli S, Fossati L, Basta F, Zucchetti E, Sala G, Di Pierri R, Zullo L, Cappellani A, Ippolito S, Castelli D, Cavallero A, Casati M. The diagnostic performances of the Atellica® 1500 automated urinalysis system for ruling out bacterial urinary tract infection. Clin Chim Acta 2023; 548:117494. [PMID: 37479011 DOI: 10.1016/j.cca.2023.117494] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 07/18/2023] [Accepted: 07/18/2023] [Indexed: 07/23/2023]
Abstract
Urinary tract infection (UTI) is one of the most common diseases occurring in both hospitalized and community subjects. Urine culture is the gold standard test for the diagnosis of UTI, but approximately 80% are negative. The aim of this study was to evaluate the performance of the automated urinalysis system Atellica® 1500 (Siemens Healthineers, Erlangen, Germany) as screening tool for ruling out UTI. A total of 5,490 urine specimens from outpatients, that had simultaneous requests for urinalysis and urine culture, were evaluated. Of the 5,490 samples, 833 (15.2 %) resulted positive for urine culture. Among UTI-related parameters, bacterial count was considered the most apt to be diagnostic of subjects affected by UTI. Using a cutoff value for bacteria count equal to 180 elements/µL, Atellica® 1500 detected bacteriuria with diagnostic sensitivity (Se) of 88.1 %, diagnostic specificity (Sp) of 82.1 %, and negative predictive value (NPV) of 95.2 %. Comparing our results with the literature's data, we observed that our Se and NPV were lower, while our Sp was higher. Our data showed that the Atellica® 1500 system detected bacteria with satisfactory analytical performance, but the results obtained do not make it a reliable tool for excluding UTI with urinalysis.
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Affiliation(s)
- Pietro Iezzi
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
| | - Fabrizio Cappellini
- Clinical Chemistry Laboratory, Fondazione IRCCS San Gerardo dei Tintori, Monza, Italy
| | - Jari Intra
- Clinical Chemistry Laboratory, Fondazione IRCCS San Gerardo dei Tintori, Monza, Italy.
| | - Silvia Carnicelli
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
| | - Lidia Fossati
- Clinical Chemistry Laboratory, Fondazione IRCCS San Gerardo dei Tintori, Monza, Italy
| | - Francesca Basta
- Clinical Chemistry Laboratory, Fondazione IRCCS San Gerardo dei Tintori, Monza, Italy
| | - Elisa Zucchetti
- Clinical Chemistry Laboratory, Fondazione IRCCS San Gerardo dei Tintori, Monza, Italy
| | - Gabriele Sala
- Clinical Chemistry Laboratory, Fondazione IRCCS San Gerardo dei Tintori, Monza, Italy
| | - Rossella Di Pierri
- Clinical Chemistry Laboratory, Fondazione IRCCS San Gerardo dei Tintori, Monza, Italy
| | - Laura Zullo
- Clinical Chemistry Laboratory, Fondazione IRCCS San Gerardo dei Tintori, Monza, Italy
| | - Adele Cappellani
- Clinical Chemistry Laboratory, Fondazione IRCCS San Gerardo dei Tintori, Monza, Italy
| | - Silvia Ippolito
- Clinical Chemistry Laboratory, Fondazione IRCCS San Gerardo dei Tintori, Monza, Italy
| | - Daniele Castelli
- Microbiology Unit, Fondazione IRCCS San Gerardo dei Tintori, Monza, Italy
| | - Annalisa Cavallero
- Microbiology Unit, Fondazione IRCCS San Gerardo dei Tintori, Monza, Italy
| | - Marco Casati
- Clinical Chemistry Laboratory, Fondazione IRCCS San Gerardo dei Tintori, Monza, Italy
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Intra J, Carcione D, Sala RM, Siracusa C, Brambilla P, Leoni V. Antimicrobial Resistance Patterns of Enterobacter cloacae and Klebsiella aerogenes Strains Isolated from Clinical Specimens: A Twenty-Year Surveillance Study. Antibiotics (Basel) 2023; 12:antibiotics12040775. [PMID: 37107137 PMCID: PMC10135309 DOI: 10.3390/antibiotics12040775] [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: 02/18/2023] [Revised: 03/18/2023] [Accepted: 04/17/2023] [Indexed: 04/29/2023] Open
Abstract
We retrospectively analyzed the antimicrobial data of Enterobacter spp. strains isolated from hospitalized subjects and outpatients over 20 years (2000-2019). A total of 2277 non-duplicate Enterobacter spp. isolates, 1037 from outpatients (45%) and 1240 from hospitalized subjects (55%), were retrieved. Most of samples are infections of the urinary tract. Considering Enterobacter aerogenes, now classified as Klebsiella aerogenes, and Enterobacter cloacae, representing more than 90% of all isolates, except for aminoglycosides and fluroquinolones, which showed significant antibiotic decreasing trends (p < 0.01), none of the other antimicrobial agents tested showed significant changes in both groups (p > 0.05). Conversely, there was a significant increasing resistance trend for fosfomycin (p < 0.01), among both community and hospital-related subjects, most probably owing to uncontrolled and improper usage. Surveillance studies on antibiotic resistance at the local and regional level are required to detect new resistance mechanisms, reduce inappropriate antimicrobial consumption, and increase the focus on antimicrobial stewardship.
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Affiliation(s)
- Jari Intra
- Clinical Chemistry Laboratory, Fondazione IRCCS San Gerardo Dei Tintori, via Pergolesi 33, 20900 Monza, MB, Italy
| | - Davide Carcione
- Laboratory of Medicine and Microbiology, Busto Arsizio Hospital-ASST Valle Olona, via Arnaldo da Brescia, 1, 21052 Busto Arsizio, VA, Italy
| | - Roberta Maria Sala
- Department of Laboratory Medicine, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale della Brianza, ASST-Brianza, Desio Hospital, via Mazzini 1, 20833 Desio, MB, Italy
| | - Claudia Siracusa
- Department of Laboratory Medicine, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale della Brianza, ASST-Brianza, Desio Hospital, via Mazzini 1, 20833 Desio, MB, Italy
| | - Paolo Brambilla
- Department of Laboratory Medicine, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale della Brianza, ASST-Brianza, Desio Hospital, via Mazzini 1, 20833 Desio, MB, Italy
| | - Valerio Leoni
- Department of Laboratory Medicine, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale della Brianza, ASST-Brianza, Desio Hospital, via Mazzini 1, 20833 Desio, MB, Italy
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Intra J, Cappellini F, Casati M. The fundamental role of synergy between laboratory professionals and clinicians to minimize pseudohypokalemia cases in subjects affected by hyperleukocytosis. Scand J Clin Lab Invest 2022; 82:604-607. [PMID: 36306179 DOI: 10.1080/00365513.2022.2137843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Jari Intra
- Clinical Chemistry Laboratory, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, San Gerardo Hospital, Monza, Italy
| | - Fabrizio Cappellini
- Clinical Chemistry Laboratory, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, San Gerardo Hospital, Monza, Italy
| | - Marco Casati
- Clinical Chemistry Laboratory, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, San Gerardo Hospital, Monza, Italy
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Intra J, Cappellani A, Ippolito S, Pezzatti S, Carpenedo M, Romano R, Spinoni N, Brivio R. IgD multiple myeloma: The relevant clinical role of laboratory in the detection of rare plasma cell neoplasms. Am J Med Sci 2022; 364:505-507. [PMID: 35609682 DOI: 10.1016/j.amjms.2022.05.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 04/28/2022] [Accepted: 05/17/2022] [Indexed: 01/25/2023]
Affiliation(s)
- Jari Intra
- Clinical Chemistry Laboratory, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, St Gerardo Hospital, via Pergolesi 33, Monza 20900, Italy.
| | - Adele Cappellani
- Clinical Chemistry Laboratory, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, St Gerardo Hospital, via Pergolesi 33, Monza 20900, Italy
| | - Silvia Ippolito
- Clinical Chemistry Laboratory, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, St Gerardo Hospital, via Pergolesi 33, Monza 20900, Italy
| | - Sara Pezzatti
- Department of Hematology and Transplantation, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, St Gerardo Hospital, Monza, Italy
| | - Monica Carpenedo
- Department of Hematology and Transplantation, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, St Gerardo Hospital, Monza, Italy
| | - Rita Romano
- Clinical Chemistry Laboratory, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, St Gerardo Hospital, via Pergolesi 33, Monza 20900, Italy
| | - Nadia Spinoni
- Clinical Chemistry Laboratory, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, St Gerardo Hospital, via Pergolesi 33, Monza 20900, Italy
| | - Rinaldo Brivio
- Clinical Chemistry Laboratory, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, St Gerardo Hospital, via Pergolesi 33, Monza 20900, Italy
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Carcione D, Leccese G, Conte G, Rossi E, Intra J, Bonomi A, Sabella S, Moreo M, Landini P, Brilli M, Paroni M. Lack of Direct Correlation between Biofilm Formation and Antimicrobial Resistance in Clinical Staphylococcus epidermidis Isolates from an Italian Hospital. Microorganisms 2022; 10:microorganisms10061163. [PMID: 35744681 PMCID: PMC9230108 DOI: 10.3390/microorganisms10061163] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 06/01/2022] [Accepted: 06/03/2022] [Indexed: 11/28/2022] Open
Abstract
Staphylococcus epidermidis is an opportunistic pathogen and a frequent cause of nosocomial infections. In this work, we show that, among 51 S. epidermidis isolates from an Italian hospital, only a minority displayed biofilm formation, regardless of their isolation source (peripheral blood, catheter, or skin wounds); however, among the biofilm-producing isolates, those from catheters were the most efficient in biofilm formation. Interestingly, most isolates including strong biofilm producers displayed production levels of PIA (polysaccharide intercellular adhesin), the main S. epidermidis extracellular polysaccharide, similar to reference S. epidermidis strains classified as non-biofilm formers, and much lower than those classified as intermediate or high biofilm formers, possibly suggesting that high levels of PIA production do not confer a particular advantage for clinical isolates. Finally, while for the reference S. epidermidis strains the biofilm production clearly correlated with the decreased sensitivity to antibiotics, in particular, protein synthesis inhibitors, in our clinical isolates, such positive correlation was limited to tetracycline. In contrast, we observed an inverse correlation between biofilm formation and the minimal inhibitory concentrations for levofloxacin and teicoplanin. In addition, in growth conditions favoring PIA production, the biofilm-forming isolates showed increased sensitivity to daptomycin, clindamycin, and erythromycin, with increased tolerance to the trimethoprim/sulfamethoxazole association. The lack of direct correlation between the biofilm production and increased tolerance to antibiotics in S. epidermidis isolates from a clinical setting would suggest, at least for some antimicrobials, the possible existence of a trade-off between the production of biofilm determinants and antibiotic resistance.
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Affiliation(s)
- Davide Carcione
- Laboratory of Microbiology and Virology, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy;
- Department of Laboratory Medicine, IRCCS Centro Cardiologico Monzino, 20138 Milan, Italy; (S.S.); (M.M.)
| | - Gabriella Leccese
- Department of Bioscience, University of Milan, 20133 Milan, Italy; (G.L.); (G.C.); (E.R.); (P.L.)
| | - Gianmarco Conte
- Department of Bioscience, University of Milan, 20133 Milan, Italy; (G.L.); (G.C.); (E.R.); (P.L.)
| | - Elio Rossi
- Department of Bioscience, University of Milan, 20133 Milan, Italy; (G.L.); (G.C.); (E.R.); (P.L.)
| | - Jari Intra
- Clinical Chemistry Laboratory, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, San Gerardo Hospital, Via Pergolesi 33, 20900 Monza, Italy;
| | - Alice Bonomi
- Unit of Biostatistics, IRCCS Centro Cardiologico Monzino, 20138 Milan, Italy;
| | - Simona Sabella
- Department of Laboratory Medicine, IRCCS Centro Cardiologico Monzino, 20138 Milan, Italy; (S.S.); (M.M.)
| | - Massimo Moreo
- Department of Laboratory Medicine, IRCCS Centro Cardiologico Monzino, 20138 Milan, Italy; (S.S.); (M.M.)
| | - Paolo Landini
- Department of Bioscience, University of Milan, 20133 Milan, Italy; (G.L.); (G.C.); (E.R.); (P.L.)
| | - Matteo Brilli
- Department of Bioscience, University of Milan, 20133 Milan, Italy; (G.L.); (G.C.); (E.R.); (P.L.)
- Correspondence: (M.B.); (M.P.)
| | - Moira Paroni
- Department of Bioscience, University of Milan, 20133 Milan, Italy; (G.L.); (G.C.); (E.R.); (P.L.)
- Correspondence: (M.B.); (M.P.)
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9
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Di Bella S, Antonello RM, Sanson G, Maraolo AE, Giacobbe DR, Sepulcri C, Ambretti S, Aschbacher R, Bartolini L, Bernardo M, Bielli A, Busetti M, Carcione D, Camarlinghi G, Carretto E, Cassetti T, Chilleri C, De Rosa FG, Dodaro S, Gargiulo R, Greco F, Knezevich A, Intra J, Lupia T, Concialdi E, Bianco G, Luzzaro F, Mauri C, Morroni G, Mosca A, Pagani E, Parisio EM, Ucciferri C, Vismara C, Luzzati R, Principe L. Anaerobic bloodstream infections in Italy (ITANAEROBY): A 5-year retrospective nationwide survey. Anaerobe 2022; 75:102583. [PMID: 35568274 DOI: 10.1016/j.anaerobe.2022.102583] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 12/05/2021] [Revised: 05/01/2022] [Accepted: 05/04/2022] [Indexed: 12/26/2022]
Abstract
INTRODUCTION A lack of updated data on the burden and profile of anaerobic bloodstream infections (ABIs) exists. We assessed the incidence of ABIs and trends in antimicrobial resistance in anaerobes isolated from blood in Italy. MATERIAL AND METHODS We conducted a retrospective study on 17 Italian hospitals (2016-2020). Anaerobes isolated from blood culture and their in vitro susceptibility profiles (EUCAST-interpreted) were registered and analyzed. RESULTS A total of 1960 ABIs were identified. The mean age of ABIs patients was 68.6 ± 18.5 years, 57.6% were males. The overall incidence rate of ABIs was 1.01 per 10.000 patient-days. Forty-seven% of ABIs occurred in medical wards, 17% in ICUs, 14% in surgical wards, 7% in hemato-oncology, 14% in outpatients. The three most common anti-anaerobic tested drugs were metronidazole (92%), clindamycin (89%) and amoxicillin/clavulanate (83%). The three most common isolated anaerobes were Bacteroides fragilis (n = 529), Cutibacterium acnes (n = 262) and Clostridium perfringens (n = 134). The lowest resistance rate (1.5%) was to carbapenems, whereas the highest rate (51%) was to penicillin. Clindamycin resistance was >20% for Bacteroides spp., Prevotella spp. and Clostridium spp. Metronidazole resistance was 9.2% after excluding C. acnes and Actinomyces spp. Bacteroides spp. showed an increased prevalence of clindamycin resistance through the study period: 19% in 2016, 33% in 2020 (p ≤ 0.001). CONCLUSIONS Our data provide a comprehensive overview of the epidemiology of ABIs in Italy, filling a gap that has existed since 1995. Caution is needed when clindamycin is used as empirical anti-anaerobic drug.
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Affiliation(s)
- Stefano Di Bella
- Clinical Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, Italy.
| | - Roberta Maria Antonello
- Clinical Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, Italy.
| | - Gianfranco Sanson
- Clinical Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, Italy.
| | | | - Daniele Roberto Giacobbe
- San Martino Polyclinic Hospital IRCCS, Genoa, Italy; Department of Health Sciences, University of Genoa, Genoa, Italy.
| | - Chiara Sepulcri
- San Martino Polyclinic Hospital IRCCS, Genoa, Italy; Department of Health Sciences, University of Genoa, Genoa, Italy.
| | - Simone Ambretti
- University Hospital of Bologna-Policlinico Sant'Orsola-Malpighi, Microbiology and Virology Unit, Bologna, Italy.
| | - Richard Aschbacher
- Laboratorio Aziendale di Microbiologia e Virologia, Comprensorio Sanitario di Bolzano, Azienda Sanitaria dell'Alto Adige, Bolzano, Italy.
| | - Laura Bartolini
- Clinical Microbiology and Virology Unit, Florence Careggi University Hospital, Florence, Italy.
| | - Mariano Bernardo
- Microbiology Unit, AORN Ospedali dei Colli-Monaldi Hospital, Naples, Italy.
| | - Alessandra Bielli
- Clinical Pathology and Microbiology Unit, ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy.
| | - Marina Busetti
- Microbiology and Virology Unit, University Hospital of Trieste, Trieste, Italy.
| | - Davide Carcione
- Department of Laboratory Medicine, University of Milano-Bicocca, ASST-Brianza, Desio Hospital, Desio, Italy.
| | - Giulio Camarlinghi
- Clinical Pathology and Microbiology Unit, San Luca Hospital, Lucca, Italy.
| | - Edoardo Carretto
- Clinical Microbiology Laboratory, IRCCS Arcispedale Santa Maria Nuova, Reggio Emilia, Italy.
| | - Tiziana Cassetti
- Clinical Microbiology and Virology Unit, AOU Policlinico, Modena, Italy.
| | - Chiara Chilleri
- Clinical Microbiology and Virology Unit, Florence Careggi University Hospital, Florence, Italy.
| | - Francesco Giuseppe De Rosa
- Department of Medical Sciences, Infectious Diseases, University of Turin, Turin, Italy; Unit of Infectious Diseases, Cardinal Massaia Hospital, Asti, Italy.
| | - Saveria Dodaro
- Microbiology and Virology Unit, "Annunziata" Hospital of Cosenza, Cosenza, Italy.
| | - Raffaele Gargiulo
- Clinical Microbiology and Virology Unit, AOU Policlinico, Modena, Italy.
| | - Francesca Greco
- Microbiology and Virology Unit, "Annunziata" Hospital of Cosenza, Cosenza, Italy
| | - Anna Knezevich
- Microbiology and Virology Unit, University Hospital of Trieste, Trieste, Italy.
| | - Jari Intra
- Department of Laboratory Medicine, University of Milano-Bicocca, ASST-Brianza, Desio Hospital, Desio, Italy.
| | - Tommaso Lupia
- Department of Medical Sciences, Infectious Diseases, University of Turin, Turin, Italy; Unit of Infectious Diseases, Cardinal Massaia Hospital, Asti, Italy.
| | | | - Gabriele Bianco
- Microbiology and Virology Unit, Città della Salute e della Scienza di Torino, University of Turin, Italy.
| | - Francesco Luzzaro
- Clinical Microbiology and Virology Unit, "A. Manzoni" Hospital, Lecco, Italy.
| | - Carola Mauri
- Clinical Microbiology and Virology Unit, "A. Manzoni" Hospital, Lecco, Italy
| | - Gianluca Morroni
- Microbiology Unit, Department of Biomedical Sciences and Public Health, Polytechnic University of Marche Medical School, Ancona, Italy.
| | - Adriana Mosca
- Interdisciplinary Department of Medicine (DIM), University of Bari "Aldo Moro", Policlinico, Bari, Italy.
| | - Elisabetta Pagani
- Laboratorio Aziendale di Microbiologia e Virologia, Comprensorio Sanitario di Bolzano, Azienda Sanitaria dell'Alto Adige, Bolzano, Italy
| | - Eva Maria Parisio
- Clinical Pathology and Microbiology Unit, San Luca Hospital, Lucca, Italy.
| | - Claudio Ucciferri
- Clinic of Infectious Diseases, Department of Medicine and Science of Aging, University "G. d'Annunzio" Chieti-Pescara, Chieti, Italy.
| | - Chiara Vismara
- Clinical Pathology and Microbiology Unit, ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy.
| | - Roberto Luzzati
- Clinical Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, Italy.
| | - Luigi Principe
- Clinical Pathology and Microbiology Unit, "San Giovanni di Dio" Hospital, Crotone, Italy.
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Casati M, Intra J, Rossi W, Giacobone C, Brivio R. Hemolysis and blood gas analysis: it’s time for a change! Scandinavian Journal of Clinical and Laboratory Investigation 2022; 82:138-142. [DOI: 10.1080/00365513.2022.2034037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Marco Casati
- Clinical Chemistry Laboratory, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, St Gerardo Hospital, Monza, Italy
| | - Jari Intra
- Clinical Chemistry Laboratory, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, St Gerardo Hospital, Monza, Italy
| | - Wendy Rossi
- Clinical Chemistry Laboratory, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, St Gerardo Hospital, Monza, Italy
| | - Chiara Giacobone
- Clinical Chemistry Laboratory, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, St Gerardo Hospital, Monza, Italy
| | - Rinaldo Brivio
- Clinical Chemistry Laboratory, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, St Gerardo Hospital, Monza, Italy
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Carcione D, Siracusa C, Sulejmani A, Migliavacca R, Mercato A, Piazza A, Principe L, Clementi N, Mancini N, Leoni V, Intra J. In Vitro Antimicrobial Activity of the Siderophore Cephalosporin Cefiderocol against Acinetobacter baumannii Strains Recovered from Clinical Samples. Antibiotics (Basel) 2021; 10:antibiotics10111309. [PMID: 34827247 PMCID: PMC8614976 DOI: 10.3390/antibiotics10111309] [Citation(s) in RCA: 2] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 10/22/2021] [Accepted: 10/23/2021] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND Cefiderocol is a siderophore cephalosporin that exhibits antimicrobial activity against most multi-drug resistant Gram-negative bacteria, including Enterobacterales, Pseudomonas aeruginosa, Acinetobacter baumannii, and Stenotrophomonas maltophilia. METHODS A total of 20 multidrug-resistant A. baumannii strains were isolated from 2020 to 2021, molecularly characterized and tested to assess the in vitro antibacterial activity of cefiderocol. Thirteen strains were carbapenem-hydrolysing oxacillinase OXA-23-like producers, while seven were non-OXA-23-like producers. Minimum inhibitory concentrations (MICs) were determined by broth microdilution, considered as the gold standard method. Disk diffusion test was also carried out using iron-depleted CAMHB plates for cefiderocol. RESULTS Cefiderocol MICs ranged from 0.5 to 1 mg/L for OXA-23-like non-producing A. baumannii strains and from 0.25 to >32 mg/L for OXA-23-like producers, using the broth microdilution method. Cefiderocol MIC90 was 8 mg/L. Diameter of inhibition zone of cefiderocol ranged from 18 to 25 mm for OXA-23-like non-producers and from 15 to 36 mm for OXA-23-like producers, using the diffusion disk method. A large variability and a low reproducibility were observed during the determination of diameter inhibition zone. Molecular characterization showed that all isolates presented the ISAba1 genetic element upstream the blaOXA-51. Among OXA-23-like non-producers, four were blaOXA-58 positive and two were negative for all the resistance determinants analyzed. CONCLUSIONS Cefiderocol showed in vitro antimicrobial activity against both carbapenem-susceptible and non-susceptible A. baumannii strains, although some OXA-23-like producers were resistant. Further clinical studies are needed to consolidate the role of cefiderocol as an antibiotic against MDR A. baumannii.
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Affiliation(s)
- Davide Carcione
- Department of Laboratory Medicine, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale Brianza ASST-Brianza, Desio Hospital, via Mazzini 1, 20833 Desio, Italy; (D.C.); (C.S.); (A.S.); (V.L.)
| | - Claudia Siracusa
- Department of Laboratory Medicine, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale Brianza ASST-Brianza, Desio Hospital, via Mazzini 1, 20833 Desio, Italy; (D.C.); (C.S.); (A.S.); (V.L.)
| | - Adela Sulejmani
- Department of Laboratory Medicine, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale Brianza ASST-Brianza, Desio Hospital, via Mazzini 1, 20833 Desio, Italy; (D.C.); (C.S.); (A.S.); (V.L.)
| | - Roberta Migliavacca
- Unit of Microbiology and Clinical Microbiology, Department of Clinical-Surgical, Diagnostic and Pediatric Sciences, University of Pavia, 27100 Pavia, Italy; (R.M.); (A.M.); (A.P.)
| | - Alessandra Mercato
- Unit of Microbiology and Clinical Microbiology, Department of Clinical-Surgical, Diagnostic and Pediatric Sciences, University of Pavia, 27100 Pavia, Italy; (R.M.); (A.M.); (A.P.)
| | - Aurora Piazza
- Unit of Microbiology and Clinical Microbiology, Department of Clinical-Surgical, Diagnostic and Pediatric Sciences, University of Pavia, 27100 Pavia, Italy; (R.M.); (A.M.); (A.P.)
| | - Luigi Principe
- Clinical Pathology and Microbiology Unit, S. Giovanni di Dio Hospital, 88900 Crotone, Italy
- Correspondence:
| | - Nicola Clementi
- Laboratorio di Microbiologia e Virologia, Università Vita-Salute San Raffaele, 20132 Milan, Italy; (N.C.); (N.M.)
- IRCCS Ospedale San Raffaele, 20132 Milan, Italy
| | - Nicasio Mancini
- Laboratorio di Microbiologia e Virologia, Università Vita-Salute San Raffaele, 20132 Milan, Italy; (N.C.); (N.M.)
- IRCCS Ospedale San Raffaele, 20132 Milan, Italy
| | - Valerio Leoni
- Department of Laboratory Medicine, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale Brianza ASST-Brianza, Desio Hospital, via Mazzini 1, 20833 Desio, Italy; (D.C.); (C.S.); (A.S.); (V.L.)
| | - Jari Intra
- Clinical Chemistry Laboratory, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, San Gerardo Hospital, via Pergolesi 33, 20900 Monza, Italy;
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12
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Milano A, Sulejmani A, Intra J, Sala MR, Leoni V, Carcione D. Antimicrobial Resistance Trends of Escherichia coli Isolates from Outpatient and Inpatient Urinary Infections over a 20-Year Period. Microb Drug Resist 2021; 28:63-72. [PMID: 34520265 DOI: 10.1089/mdr.2021.0010] [Citation(s) in RCA: 7] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Antimicrobial resistance is a worldwide problem, and resistance in Enterobacteriaceae, particularly Escherichia coli and Klebsiella pneumoniae, is a critical threat to human health. Inappropriate and unnecessary use of antibiotics in human health care is the most common cause for the development and spread of antimicrobial resistance. In this work, we retrospectively analyzed the antimicrobial data of E. coli strains isolated from midstream urinary samples over a 20-year period (2000-2019). The aim was to provide useful information to clinicians to prescribe a more appropriate empirical antibiotic therapy. A total of 30,955 unique E. coli isolates from positive midstream urine samples of inpatients (1,198) and outpatients (29,757) were collected. Except for carbapenems, over time all the antibiotics tested showed increasing resistance rates in both groups (p < 0.0001). On the other hand, fosfomycin and nitrofurantoin presented significant decreasing trends in resistance rate (p < 0.05). There were significant increases in extended-spectrum β-lactamases- and multidrug resistance positive isolates starting in 2000 (p < 0.0001), with similar results in both groups. Ciprofloxacin, gentamicin, trimethoprim/sulfamethoxazole, and third-generation cephalosporin resistances significantly increased with increasing age (p < 0.0001). Collectively, E. coli resistance rates severely increased during the study period, except for fosfomycin and nitrofurantoin. The need of monitoring studies about antibiotic nonsusceptibilities at local and regional levels are necessary to enhance the focus on antimicrobial stewardship, to reduce antimicrobial consumption and to detect alarming resistance mechanisms.
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Affiliation(s)
- Antonio Milano
- Department of Laboratory Medicine, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, Desio Hospital, Desio, Italy
| | - Adela Sulejmani
- Department of Laboratory Medicine, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, Desio Hospital, Desio, Italy
| | - Jari Intra
- Department of Laboratory Medicine, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, Desio Hospital, Desio, Italy
| | - Maria Roberta Sala
- Department of Laboratory Medicine, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, Desio Hospital, Desio, Italy
| | - Valerio Leoni
- Department of Laboratory Medicine, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, Desio Hospital, Desio, Italy
| | - Davide Carcione
- Department of Laboratory Medicine, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, Desio Hospital, Desio, Italy
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Sarto C, Intra J, Fania C, Brivio R, Brambilla P, Leoni V. Monoclonal free light chain detection and quantification: Performances and limits of available laboratory assays. Clin Biochem 2021; 95:28-33. [PMID: 33991536 DOI: 10.1016/j.clinbiochem.2021.05.006] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 04/25/2021] [Accepted: 05/10/2021] [Indexed: 11/19/2022]
Abstract
The detection and quantification of immunoglobulin free light chains in serum and urine is recommended for the diagnosis and monitoring of monoclonal gammopathies according to the guidelines of the International Myeloma Working Group (IMWG). Several tests are currently available in the clinical laboratory to detect and quantify free light chains but although quality, efficiency, and effectiveness have been improved, the results are still variable and poorly harmonized and standardized. The present review article wants to analyze these aspects, with a keen eye on techniques, such as mass spectrometry, that could replace in the practical clinical laboratory the current methods including Bence-Jones protein assay and free light chain immunoassays.
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Affiliation(s)
- C Sarto
- Department of Laboratory Medicine, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale della Brianza ASST-Brianza, Desio Hospital, via Mazzini 1, 20833 Desio, (MB), Italy
| | - J Intra
- Clinical Chemistry Laboratory, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, St Gerardo Hospital, via Pergolesi 33, 20900 Monza, (MB), Italy.
| | - C Fania
- Clinical Chemistry Unit, "Maggiore della Carità" University Hospital, 28100 Novara, Italy
| | - R Brivio
- Clinical Chemistry Laboratory, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, St Gerardo Hospital, via Pergolesi 33, 20900 Monza, (MB), Italy
| | - P Brambilla
- Department of Laboratory Medicine, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale della Brianza ASST-Brianza, Desio Hospital, via Mazzini 1, 20833 Desio, (MB), Italy
| | - V Leoni
- Department of Laboratory Medicine, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale della Brianza ASST-Brianza, Desio Hospital, via Mazzini 1, 20833 Desio, (MB), Italy
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Carcione D, Intra J, Riggio D, Sabella S, Rondelli L, Barbieri S, Leoni V, Biondi ML. Evaluation of a rapid diagnostic test for detection of SARS-CoV-2 antigen in nasopharyngeal swabs. Microbiol Med 2021. [DOI: 10.4081/mm.2021.9623] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background and aims: Rapid and accurate diagnosis is essential to limit the spread of SARS-CoV-2 and for patient’s management. Currently, real-time reverse transcription polymerase chain reaction (RT-PCR) is the recommended laboratory test to detect SARS-CoV-2. However, the requirement of special instruments and skilled personnel have limited the use of this technique. Recently, several rapid antigen detection tests have been developed and used as frontline. The aim of this work was to assess the performances of STANDARD F COVID-19 Ag FIA Kit, a rapid fluorescence immunoassay for the detection of SARS-CoV-2 nucleoprotein antigens, in comparison to RT-PCR.Materials and methods: Twenty-three nasopharyngeal swabs were collected and tested. Results: Among the 20 positive RT-PCR samples, 9 were detected by the immunofluorescence assay, reporting an overall sensitivity of 45%. The sensitivity increased to 64% in the case of a high viral load, where all three target genes, RdRp, N, and E, were detected by RT-PCR. Conclusions: A better antigen detection rate is associated with low Cycle threshold values which are inversely related to the viral load. STANDARD F COVID-19 Ag test cannot be considered as the frontline assay for COVID-19 diagnosis, but it might be used in association with clinical signs of patients to reduce the number of RT-PCR testing.
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Intra J, Brivio R, Cappellani A, Minolfi V, Romano R, Spinoni N, Brambilla P. Monoclonal components in alpha-2 region should not be neglected in capillary electrophoresis. Clin Chem Lab Med 2021; 59:e145-e147. [PMID: 33068382 DOI: 10.1515/cclm-2020-1377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 09/18/2020] [Indexed: 11/15/2022]
Affiliation(s)
- Jari Intra
- Clinical Chemistry Laboratory, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, St Gerardo Hospital, Monza, Italy
| | - Rinaldo Brivio
- Clinical Chemistry Laboratory, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, St Gerardo Hospital, Monza, Italy
| | - Adele Cappellani
- Clinical Chemistry Laboratory, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, St Gerardo Hospital, Monza, Italy
| | - Vanna Minolfi
- Clinical Chemistry Laboratory, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, St Gerardo Hospital, Monza, Italy
| | - Rita Romano
- Clinical Chemistry Laboratory, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, St Gerardo Hospital, Monza, Italy
| | - Nadia Spinoni
- Clinical Chemistry Laboratory, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, St Gerardo Hospital, Monza, Italy
| | - Paolo Brambilla
- Department of Laboratory Medicine, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, Desio Hospital, Desio, Italy
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Limonta G, Intra J, Brambilla P. The clinical utility of D-dimer/platelet count ratio in pregnant women. J Matern Fetal Neonatal Med 2021; 35:3602-3611. [PMID: 33605179 DOI: 10.1080/14767058.2020.1833322] [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] [Indexed: 10/22/2022]
Abstract
OBJECTIVE We performed a retrospective study to assess the clinical utility of a new index, D-dimer/platelet count (DD/PLT) ratio, in discriminating preeclampsia from normal pregnancy and gestational hypertension during third trimester, compared to the biomarkers currently used, such as D-dimer (DD), platelet (PLT), lymphocyte (LIN) and neutrophil (NEU) counts, fibrinogen (FIB), PLT/NEU, NEU/LIN and PLT/LIN ratios. STUDY DESIGN We retrospectively included 213 subjects. Of them, 163 and 50 were singleton pregnant and healthy non-pregnant women, respectively. Among pregnant women, 105 had normal pregnancy, 33 had gestational hypertension, and 25 had preeclampsia. RESULTS Using Receiver Operating Curve (ROC) analysis, DD/PLT ratio showed significant higher area under the curve (AUC) (0.90; 95% confidence interval (CI) 0.84-0.95) in discriminating preeclampsia from normal pregnancy compared to those of DD, NEU, FIB, LIN, PLT/NEU, NEU/LIN and PLT/LIN ratios (p < .03). In discriminating preeclampsia from gestational hypertension, the DD/PLT AUC (0.90; 95% CI 0.79-0.96) was significantly higher than those of DD, NEU, FIB, LIN, NEU/LIN and PLT/LIN ratios (p < .03), and not statistically different from those of PLT (p = .22) and PLT/NEU ratio (p = .46). CONCLUSIONS This study shows that DD/PLT ratio helps to discriminate preeclampsia from normal pregnancy and gestational hypertension. Large-scale studies are needed to verify its clinical usefulness, and to suggest more appropriate cutoff values for a widespread use.
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Affiliation(s)
- G Limonta
- Department of Laboratory Medicine, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, Desio Hospital, Desio, Italy
| | - J Intra
- Clinical Chemistry Laboratory, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, St Gerardo Hospital, Monza, Italy
| | - P Brambilla
- Department of Laboratory Medicine, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, Desio Hospital, Desio, Italy
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Sulejmani A, Galimberti E, Giacobone C, Milano A, Scopetta E, Intra J, Falbo R, Sarto C, Leoni V, Brambilla P. Baseline characteristics of COVID-19 Italian patients admitted to Desio Hospital, Lombardy: a retrospective study. Scand J Clin Lab Invest 2021; 81:18-23. [PMID: 33403882 DOI: 10.1080/00365513.2020.1846211] [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] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The correlation of clinical, radiological and laboratory findings of patients at admission in the Emergency Department (ED) with clinical severity and risk of mortality was investigated. Adult coronavirus disease 2019 (COVID-19) patients hospitalized in March 2020 in Desio Hospital, Lombardy, were retrospectively included in the study, and categorized in terms of disease severity and adverse outcome. Out of the 175 patients enrolled, 79% presented one or more comorbidities, with cardiovascular disease being the most frequent (62%). More than half of the patients showed lymphocytopenia and 20% thrombocytopenia. The patients in the severe group presented higher absolute neutrophil count (ANC), C-reactive protein (CRP), AST, LDH, procalcitonin (PCT) and BUN values compared to the non-severe group (p < .05). Increased odds of mortality associated with older age (OR = 22.43; 95% CI 5.22-96.27), partial pressure of oxygen (PaO2)/fraction of inspired oxygen (FIO2) ratio < 200 (OR = 4.97; 95% CI 1.55-15.84), clinical severity (OR = 21.32; 95% CI 2.27-200.13), creatinine > 106.08 µmol/L (OR = 2.87; 95% CI 1.04-7.92) and creatine kinase > 2.90 µkat/L (OR = 3.80; 95% CI 1.31-10.9) were observed on admission (p < .05). The above findings may contribute to identify early risk factors of poor prognosis, and to select the most appropriate management for patients.
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Affiliation(s)
- Adela Sulejmani
- Laboratory of Clinical Chemistry, Hospital of Desio and Monza, ASST-Monza and School of Medicine and Surgery, University of Milano-Bicocca, Milano, Italy
| | - Elisa Galimberti
- Laboratory of Clinical Chemistry, Hospital of Desio and Monza, ASST-Monza and School of Medicine and Surgery, University of Milano-Bicocca, Milano, Italy
| | - Chiara Giacobone
- Laboratory of Clinical Chemistry, Hospital of Desio and Monza, ASST-Monza and School of Medicine and Surgery, University of Milano-Bicocca, Milano, Italy
| | - Antonio Milano
- Laboratory of Clinical Chemistry, Hospital of Desio and Monza, ASST-Monza and School of Medicine and Surgery, University of Milano-Bicocca, Milano, Italy
| | - Elena Scopetta
- Laboratory of Clinical Chemistry, Hospital of Desio and Monza, ASST-Monza and School of Medicine and Surgery, University of Milano-Bicocca, Milano, Italy
| | - Jari Intra
- Laboratory of Clinical Chemistry, Hospital of Desio and Monza, ASST-Monza and School of Medicine and Surgery, University of Milano-Bicocca, Milano, Italy
| | - Rosanna Falbo
- Laboratory of Clinical Chemistry, Hospital of Desio and Monza, ASST-Monza and School of Medicine and Surgery, University of Milano-Bicocca, Milano, Italy
| | - Cecilia Sarto
- Laboratory of Clinical Chemistry, Hospital of Desio and Monza, ASST-Monza and School of Medicine and Surgery, University of Milano-Bicocca, Milano, Italy
| | - Valerio Leoni
- Laboratory of Clinical Chemistry, Hospital of Desio and Monza, ASST-Monza and School of Medicine and Surgery, University of Milano-Bicocca, Milano, Italy
| | - Paolo Brambilla
- Laboratory of Clinical Chemistry, Hospital of Desio and Monza, ASST-Monza and School of Medicine and Surgery, University of Milano-Bicocca, Milano, Italy
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Intra J, Milano A, Sarto C, Brambilla P. A rare case of Clostridium paraputrificum bacteremia in a 78-year-old Caucasian man diagnosed with an intestinal neoplasm. Anaerobe 2020; 66:102292. [DOI: 10.1016/j.anaerobe.2020.102292] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 10/21/2020] [Accepted: 10/31/2020] [Indexed: 02/07/2023]
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Intra J, Sarto C, Brambilla P. A rare case of cutaneous Papiliotrema (Cryptococcus) laurentii infection in a 23-year-old Caucasian woman affected by an autoimmune thyroid disorder with hypothyroidism. Eur J Clin Microbiol Infect Dis 2020; 40:647-650. [PMID: 33025101 DOI: 10.1007/s10096-020-04058-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 04/17/2020] [Accepted: 09/30/2020] [Indexed: 10/23/2022]
Abstract
In recent years, the frequency of infections due to saprophytic fungi has increased. Cryptococcus laurentii, recently classified as Papiliotrema laurentii, is responsible for fungemia, meningitis, and superficial infections. Here, we report the first case of cutaneous Papiliotrema (Cryptococcus) laurentii infection in a 23-year-old Caucasian woman affected by an autoimmune thyroiditis with hypothyroidism. Impairments of the immune system are often associated with unusual fungal infections, which cannot be neglected. The isolate strain was susceptible to Amphotericin B while resistant to fluconazole, itraconazole, voriconazole, and terbinafine. The patient was successfully treated with Amphotericin B.
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Affiliation(s)
- J Intra
- Clinical Chemistry Laboratory, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, St Gerardo Hospital, via Pergolesi 33, 20900, Monza, Monza and Brianza, Italy.
| | - C Sarto
- Department of Laboratory Medicine, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, Desio Hospital, via Mazzini 1, 20833, Desio, Monza and Brianza, Italy
| | - P Brambilla
- Department of Laboratory Medicine, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, Desio Hospital, via Mazzini 1, 20833, Desio, Monza and Brianza, Italy
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Intra J, Sarto C, Beck E, Tiberti N, Leoni V, Brambilla P. Bacterial and fungal colonization of the respiratory tract in COVID-19 patients should not be neglected. Am J Infect Control 2020; 48:1130-1131. [PMID: 32593810 PMCID: PMC7315146 DOI: 10.1016/j.ajic.2020.06.185] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 06/15/2020] [Accepted: 06/15/2020] [Indexed: 12/03/2022]
Affiliation(s)
- Jari Intra
- Department of Laboratory Medicine, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, Desio Hospital, Desio, Italy.
| | - Cecilia Sarto
- Department of Laboratory Medicine, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, Desio Hospital, Desio, Italy
| | - Eduardo Beck
- Intensive Care Unit, Desio Hospital, Desio, Italy
| | - Natalia Tiberti
- Department of Infectious - Tropical Diseases and Microbiology, IRCCS Sacro Cuore, Don Calabria Hospital, Verona, Italy
| | - Valerio Leoni
- Department of Laboratory Medicine, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, Desio Hospital, Desio, Italy
| | - Paolo Brambilla
- Department of Laboratory Medicine, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, Desio Hospital, Desio, Italy
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Intra J, Sarto C, Serra G, Brambilla P. The clinical relevance of pathogen Aerococcus urinae identification by MALDI-TOF mass spectrometry: a case of sepsis in 86-year-old Caucasian male. Microbiol Med 2020. [DOI: 10.4081/mm.2020.8965] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The infrequency of urinary tract and blood stream infections caused by Aerococcus urinae is most probably due to the difficulties in the identification of this bacterium using standard microbiological methods. With the introduction of more sensitive and accurate techniques in clinical microbiology, such as genetic approaches and Matrix-Assisted Laser Desorption/Ionization-Time Of Flight (MALDI-TOF) mass spectrometry (MS), the incidence of infections due to A. urinae increased. Herein, we described a case of urinary tract and bloodstream infection caused by A. urinae, which occurred in an 86-year-old Caucasian man with a previous history of prostate cancer. The identification of A. urinae was performed by MALDI-TOF MS, since this microorganism cannot be identified by biochemical reactions. In this report, we highlight the need to consider MALDI-TOF MS as technique of choice for A. urinae identification in the presence of subjects with predisposing factors, such as old age, male gender, and genitourinary tract pathologies.
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Brivio R, Cappellani A, Carpenedo M, Minolfi V, Intra J, Romano R, Spinoni N, Brambilla P. IgE monoclonal gammopathy: The clinical relevance to perform the immunofixation using IgE antisera. Int J Lab Hematol 2020; 42:e237-e239. [PMID: 32662590 DOI: 10.1111/ijlh.13285] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 06/04/2020] [Accepted: 06/18/2020] [Indexed: 11/30/2022]
Affiliation(s)
- Rinaldo Brivio
- Clinical Chemistry Laboratory, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, St Gerardo Hospital, Monza, Italy
| | - Adele Cappellani
- Clinical Chemistry Laboratory, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, St Gerardo Hospital, Monza, Italy
| | - Monica Carpenedo
- Department of Hematology and Transplantation, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, St Gerardo Hospital, Monza, Italy
| | - Vanna Minolfi
- Clinical Chemistry Laboratory, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, St Gerardo Hospital, Monza, Italy
| | - Jari Intra
- Clinical Chemistry Laboratory, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, St Gerardo Hospital, Monza, Italy
| | - Rita Romano
- Clinical Chemistry Laboratory, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, St Gerardo Hospital, Monza, Italy
| | - Nadia Spinoni
- Clinical Chemistry Laboratory, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, St Gerardo Hospital, Monza, Italy
| | - Paolo Brambilla
- Department of Laboratory Medicine, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, Desio Hospital, Desio, Italy
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Rocco VG, Intra J, Sarto C, Tiberti N, Savarino C, Brambilla M, Brambilla P. Rapid Identification of Carbapenemase-producing Klebsiella pneumoniae strains by Matrix-Assisted Laser Desorption/Ionization-Time of Flight using Vitek ® Mass Spectrometry System. Eurasian J Med 2019; 51:209-213. [PMID: 31693719 DOI: 10.5152/eurasianjmed.2019.18405] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Objective The analysis of the protein pattern of Klebsiella pneumoniae carbapenemase (KPC)-producing strains by Bruker Matrix-Assisted Laser Desorption Ionization (MALDI) Biotyper system has revealed the presence, in the majority of cases, of an 11.109 m/z peak. The peak corresponds to the gene product named p019 of the bla KPC-bearing plasmids and has been suggested as a candidate for a biomarker that is able to distinguish KPC-producers from non-KPC-producers. The aim of this study was to evaluate the rapid detection of the 11.109 m/z peak of KPC-producer strains in the clinical laboratory routine by Matrix-Assisted Laser Desorption Ionization-Time of Flight (MALDI-TOF) technique, using the Vitek® Research-User-Only (RUO) Mass Spectrometry (MS) system without changing the instrument parameters. Materials and Methods Globally, 373 K. pneumoniae isolates were investigated and identified by MALDI-TOF MS analysis. KPC-producers were distinguished from non-KPC-producers by Antimicrobial Susceptibility Testing (AST) and phenotypic carbapenemase resistance assays. Results The MALDI-TOF Vitek MS RUO detected the 11.109 m/z peak in 95.7% of KPC-producers with 100% specificity before traditional test results became available. Conclusion Our approach is appropriate as a first screening step for the rapid identification of KPC isolates, which will help to improve infection control in clinical practice and prevent the outbreak and dissemination of resistant bacteria.
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Affiliation(s)
- Vanessa Gaia Rocco
- Department of Laboratory Medicine, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, Desio Hospital, Desio (MB), Italy
| | - Jari Intra
- Department of Laboratory Medicine, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, Desio Hospital, Desio (MB), Italy
| | - Cecilia Sarto
- Department of Laboratory Medicine, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, Desio Hospital, Desio (MB), Italy
| | - Natalia Tiberti
- Department of Infectious - Tropical Diseases and Microbiology, IRCCS Sacro Cuore - Don Calabria Hospital, Negrar (Verona), Italy
| | - Cinzia Savarino
- Department of Laboratory Medicine, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, Desio Hospital, Desio (MB), Italy
| | - Maura Brambilla
- Department of Laboratory Medicine, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, Desio Hospital, Desio (MB), Italy
| | - Paolo Brambilla
- Department of Laboratory Medicine, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, Desio Hospital, Desio (MB), Italy
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Intra J, Limonta G, Cappellini F, Bertona M, Brambilla P. Glycosylated Hemoglobin in Subjects Affected by Iron-Deficiency Anemia. Diabetes Metab J 2019; 43:539-544. [PMID: 30604593 PMCID: PMC6712229 DOI: 10.4093/dmj.2018.0072] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 08/08/2018] [Indexed: 11/24/2022] Open
Abstract
Previous studies have suggested that iron-deficiency anemia affects glycosylated hemoglobin (HbA1c) measurements, but the results were contradictory. We conducted a retrospective case-control study to determine the effects of iron deficiency on HbA1c levels. Starting with the large computerized database of the Italian Hospital of Desio, including data from 2000 to 2016, all non-pregnant individuals older than 12 years of age with at least one measurement of HbA1c, cell blood count, ferritin, and fasting blood glucose on the same date of blood collection were enrolled. A total of 2,831 patients met the study criteria. Eighty-six individuals were diagnosed with iron-deficiency anemia, while 2,745 had a normal iron state. The adjusted means of HbA1c were significantly higher in anemic subjects (5.59% [37.37 mmol/mol]), than those measured in individuals without anemia (5.34% [34.81 mmol/mol]) (P<0.0001). These results suggest that clinicians should be cautious about diagnosing prediabetes and diabetes in individuals with anemia.
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Affiliation(s)
- Jari Intra
- Department of Laboratory Medicine, Desio Hospital, University of Milano-Bicocca, Desio, Italy.
| | - Giuseppe Limonta
- Department of Laboratory Medicine, Desio Hospital, University of Milano-Bicocca, Desio, Italy
| | - Fabrizio Cappellini
- Department of Laboratory Medicine, Desio Hospital, University of Milano-Bicocca, Desio, Italy
| | - Maria Bertona
- Department of Laboratory Medicine, Desio Hospital, University of Milano-Bicocca, Desio, Italy
| | - Paolo Brambilla
- Department of Laboratory Medicine, Desio Hospital, University of Milano-Bicocca, Desio, Italy
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Intra J, Sarto C, Besana S, Tiberti N, Brambilla P. The importance of considering the neglected intestinal protozoan parasite Dientamoeba fragilis. J Med Microbiol 2019; 68:890-892. [PMID: 31050625 DOI: 10.1099/jmm.0.000983] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Dientamoebiasis is globally distributed and detected in a large number of subjects with diarrhea, abdominal discomfort, flatulence, fatigue and loss of appetite. The life cycle and transmission of Dientamoeba fragilis are poorly understood. Microscopic examination of permanent stained smears is traditionally employed to diagnose the infection. However, this approach is time-consuming and the success in detecting D. fragilis depends on the microscopist's experience. Hence, only a few laboratories routinely carry out tests for D. fragilis. Consequently, the prevalence of D. fragilis infection is probably underestimated. Although novel, rapid and more sensitive diagnostic tests are becoming available for detecting intestinal parasites, they also possess some limitations. The aim of this study was to emphasize the importance of performing microscopic examination of permanent stained smears from at least one fresh stool specimen after sample arrival at the laboratory, as a mandatory practice for the diagnosis of dientamoebiasis, particulary where it is not possible to perform molecular assays.
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Affiliation(s)
- Jari Intra
- 1 Department of Laboratory Medicine, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, Desio Hospital, via Mazzini 1, 20833, Desio (MB), Italy
| | - Cecilia Sarto
- 1 Department of Laboratory Medicine, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, Desio Hospital, via Mazzini 1, 20833, Desio (MB), Italy
| | - Silvia Besana
- 1 Department of Laboratory Medicine, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, Desio Hospital, via Mazzini 1, 20833, Desio (MB), Italy
| | - Natalia Tiberti
- 2 Department of Infectious - Tropical Diseases and Microbiology, IRCCS Sacro Cuore - Don Calabria Hospital, Negrar, Verona, Italy
| | - Paolo Brambilla
- 1 Department of Laboratory Medicine, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, Desio Hospital, via Mazzini 1, 20833, Desio (MB), Italy
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Intra J, Sarto C, Manuli E, Vannini PM, Brambilla P. Multiple Parasitic Infestation in a Nine-month-old Patient: A Case Report. Helminthologia 2019; 56:53-56. [PMID: 31662672 PMCID: PMC6662029 DOI: 10.2478/helm-2018-0039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 09/22/2018] [Accepted: 11/15/2018] [Indexed: 01/03/2023] Open
Abstract
We are reporting the case of a nine-month-old Pakistani female with complaint of growth retardation who presented multiple intestinal parasitic infections. Probably because of contamination with fecal matter, the initial microscopic examination of the urinary sample revealed the presence of eggs of Enterobius vermicularis, cysts of Entamoeba coli, and an organism similar to mites. Stool samples were obtained after two weeks and microscopic investigation confirmed the presence of Enterobius vermicularis eggs, cysts of Entamoeba coli, and hookworm eggs. The patient was immediately subjected to mebendazole therapy associated with trimethoprim-sulfamethoxazole, to which she responded well. Follow-up stool re-examinations performed 15 and 30 days after the treatment tested negative for all parasitic ova and cysts. This study reflects the importance of considering multiple parasitic infestations in low socio-economic populations and highlights the need of improving poor hygienic conditions to prevent such infections, in particular in children.
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Affiliation(s)
- J. Intra
- Department of Laboratory Medicine, University of Milano-Bicocca, Desio Hospital, via Mazzini 1, Desio (MB), Italy
| | - C. Sarto
- Department of Laboratory Medicine, University of Milano-Bicocca, Desio Hospital, via Mazzini 1, Desio (MB), Italy
| | - E. Manuli
- Department of Laboratory Medicine, University of Milano-Bicocca, Desio Hospital, via Mazzini 1, Desio (MB), Italy
| | - P. M. Vannini
- Dipartimento Cure Primarie ATS Brianza, Monza, Italy
| | - P. Brambilla
- Department of Laboratory Medicine, University of Milano-Bicocca, Desio Hospital, via Mazzini 1, Desio (MB), Italy
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Intra J, Sarto C, Tiberti N, Besana S, Savarino C, Brambilla P. Genus-level identification of dermatophytes by MALDI-TOF MS after 2 days of colony growth. Lett Appl Microbiol 2018; 67:136-143. [DOI: 10.1111/lam.12997] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Revised: 04/14/2018] [Accepted: 04/16/2018] [Indexed: 11/24/2022]
Affiliation(s)
- J. Intra
- Department of Laboratory Medicine; University of Milano-Bicocca; Desio Hospital; Desio MB Italy
| | - C. Sarto
- Department of Laboratory Medicine; University of Milano-Bicocca; Desio Hospital; Desio MB Italy
| | - N. Tiberti
- Translational Biomarker Group; Faculty of Medicine; University of Geneva; Geneva Switzerland
| | - S. Besana
- Department of Laboratory Medicine; University of Milano-Bicocca; Desio Hospital; Desio MB Italy
| | - C. Savarino
- Department of Laboratory Medicine; University of Milano-Bicocca; Desio Hospital; Desio MB Italy
| | - P. Brambilla
- Department of Laboratory Medicine; University of Milano-Bicocca; Desio Hospital; Desio MB Italy
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Intra J, Limonta G, Cappellini F, Bertona M, Brambilla P. Glycated haemoglobin and iron deficiency anaemia: a case-control study. Pract Diab 2018. [DOI: 10.1002/pdi.2170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Jari Intra
- Department of Laboratory Medicine; University of Milano-Bicocca; Desio Hospital, Desio (MB) Italy
| | - Giuseppe Limonta
- Department of Laboratory Medicine; University of Milano-Bicocca; Desio Hospital, Desio (MB) Italy
| | - Fabrizio Cappellini
- Department of Laboratory Medicine; University of Milano-Bicocca; Desio Hospital, Desio (MB) Italy
| | - Maria Bertona
- Department of Laboratory Medicine; University of Milano-Bicocca; Desio Hospital, Desio (MB) Italy
| | - Paolo Brambilla
- Department of Laboratory Medicine; University of Milano-Bicocca; Desio Hospital, Desio (MB) Italy
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Intra J, Veltri C, De Caro D, Perotti ME, Pasini ME. In vitro evidence for the participation of Drosophila melanogaster sperm β-N-acetylglucosaminidases in the interactions with glycans carrying terminal N-acetylglucosamine residues on the egg's envelopes. Arch Insect Biochem Physiol 2017; 96:e21403. [PMID: 28695569 DOI: 10.1002/arch.21403] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Fertilization is a complex and multiphasic process, consisting of several steps, where egg-coating envelope's glycoproteins and sperm surface receptors play a critical role. Sperm-associated β-N-acetylglucosaminidases, also known as hexosaminidases, have been identified in a variety of organisms. Previously, two isoforms of hexosaminidases, named here DmHEXA and DmHEXB, were found as intrinsic proteins in the sperm plasma membrane of Drosophila melanogaster. In the present work, we carried out different approaches using solid-phase assays in order to analyze the oligosaccharide recognition ability of D. melanogaster sperm hexosaminidases to interact with well-defined carbohydrate chains that might functionally mimic egg glycoconjugates. Our results showed that Drosophila hexosaminidases prefer glycans carrying terminal β-N-acetylglucosamine, but not core β-N-acetylglucosamine residues. The capacity of sperm β-N-acetylhexosaminidases to bind micropylar chorion and vitelline envelope was examined in vitro assays. Binding was completely blocked when β-N-acetylhexosaminidases were preincubated with the glycoproteins ovalbumin and transferrin, and the monosaccharide β-N-acetylglucosamine. Overall, these data support the hypothesis of the potential role of these glycosidases in sperm-egg interactions in Drosophila.
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Affiliation(s)
- Jari Intra
- Department of Biosciences, University of Milano, Milano, Italy
| | - Concetta Veltri
- Department of Biosciences, University of Milano, Milano, Italy
| | - Daniela De Caro
- Department of Biosciences, University of Milano, Milano, Italy
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Intra J, Besana S, Savarino C, Brambilla P. Serotype Distribution and Antimicrobial Resistance of Streptococcus pneumoniae Invasive Isolates Collected at the Italian Hospital of Desio, Lombardy, from 2008 to 2016. Front Public Health 2017; 5:169. [PMID: 28770191 PMCID: PMC5510286 DOI: 10.3389/fpubh.2017.00169] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Accepted: 06/26/2017] [Indexed: 11/13/2022] Open
Affiliation(s)
- Jari Intra
- Department of Laboratory Medicine, University of Milano-Bicocca, Desio Hospital, Desio, Italy
| | - Silvia Besana
- Department of Laboratory Medicine, University of Milano-Bicocca, Desio Hospital, Desio, Italy
| | - Cinzia Savarino
- Department of Laboratory Medicine, University of Milano-Bicocca, Desio Hospital, Desio, Italy
| | - Paolo Brambilla
- Department of Laboratory Medicine, University of Milano-Bicocca, Desio Hospital, Desio, Italy
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Intra J, Auricchio S, Sala RM, Brambilla P. A rare case of enteric and systemic Yersinia enterocolitica infection in a chronic, not iron-overloaded dialysis patient. Microbiol Med 2017. [DOI: 10.4081/mm.2017.6614] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
We present herein a case of bacterial gastroenteritis due to <em>Yersinia</em> <em>enterocolitica</em>, occurred in a young woman undergoing haemodialysis with a previous history positive for prolonged (20 years) immunosuppressive therapy for glomerulonephritis before and for kidney transplant later. The patient’s outcome was favourable after a third-generation cephalosporin treatment without complications. The possible pathophysiological association between patient clinical condition and <em>Yersinia</em> bacteraemia is discussed, along with the review of literature.
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Intra J, Sala M, Falbo R, Cappellini F, Brambilla P. Reducing time to identification of aerobic bacteria and fastidious micro-organisms in positive blood cultures. Lett Appl Microbiol 2016; 63:400-405. [DOI: 10.1111/lam.12682] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2016] [Revised: 09/25/2016] [Accepted: 09/28/2016] [Indexed: 12/15/2022]
Affiliation(s)
- J. Intra
- Department of Laboratory Medicine; Desio Hospital; University Milano Bicocca; Desio Italy
| | - M.R. Sala
- Department of Laboratory Medicine; Desio Hospital; University Milano Bicocca; Desio Italy
| | - R. Falbo
- Department of Laboratory Medicine; Desio Hospital; University Milano Bicocca; Desio Italy
| | - F. Cappellini
- Department of Laboratory Medicine; Desio Hospital; University Milano Bicocca; Desio Italy
| | - P. Brambilla
- Department of Laboratory Medicine; Desio Hospital; University Milano Bicocca; Desio Italy
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Intra J, Sala RM, Beck E, Brambilla P. Rapid acquisition and modulation of colistin-resistance by an extensively drug-resistant Acinetobacter baumannii: case report and review of current literature. Microbiol Med 2016. [DOI: 10.4081/mm.2016.5869] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
<em>Acinetobacter baumannii</em> has emerged as a major cause of healthcare-associated infections. It commonly expresses clinical resistance to multiple antimicrobial agents, and hence, it is considered the paradigm of an extensively drug-resistant (XDR) bacterium. XDR <em>A. baumannii</em> is a rapidly emerging pathogen, especially in the intensive care unit (ICU), causing nosocomial infections including sepsis, ventilatorassociated pneumonia, meningitis, peritonitis, urinary tract infection, and central venous catheter-related infection. In the present report, we described an<em> in vivo</em> evolution of <em>A. baumannii</em> strain from a colistinsusceptibility to a colistin-resistance state. A 65-year-old male, who suffered a duodenal ulcer, two days after hospitalization and during the stay in ICU, contracted a pneumonia and peritoneal infection by a carbapenem-resistant <em>A. baumannii</em> strain. After a combination treatment with colistin, vancomycin plus imipenem, and within seven days, the pathogen rapidly evolved in seven days to a pandrug-resistant phenotype. As the antimicrobial treatment was stopped, the <em>A. baumannii</em> isolate changed another time its profile to colistin, becoming newly susceptible, showing a very high level of adaptability to external conditions. We also have reviewed here the current literature on this worryingly public health threat.
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Intra J, Sala MR, Falbo R, Cappellini F, Brambilla P. Improvement in the detection of enteric protozoa from clinical stool samples using the automated urine sediment analyzer sediMAX ® 2 compared to sediMAX ® 1. Eur J Clin Microbiol Infect Dis 2016; 36:147-151. [PMID: 27646557 DOI: 10.1007/s10096-016-2788-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Accepted: 09/07/2016] [Indexed: 10/21/2022]
Abstract
Detection of intestinal parasites from fecal samples is routinely performed by direct wet mount examination. This method requires skilled personnel, and it is time consuming. The aim of this work is to demonstrate the usefulness of the newer automated urinary sediment analyser sediMAX 2 for a fast detection of intestinal protozoa in stool samples. A total of 700 consecutively preserved samples consisting of 70 positives and 630 negatives were analyzed. SediMAX 2 takes digital images of each sediment sample, and analysis was conducted using a dilution of stool specimens, allowing determination of typical morphology. Compared to manual microscopy, sediMAX 2 showed sensitivity and specificity of 100 % in the detection of intestinal parasites, as also recently demonstrated for sediMAX 1. However, all clinically important human protozoa were detected using only 15 images for each specimen, compared to 30 images required in sediMAX 1 analysis. Moreover, changing manually the focus, it is possible to carry out a discrimination between morphologically identical Entamoeba complex members, including the pathogenic E. histolytica and the non-pathogenic E. dispar, E. moshkovskii and E. Bangladeshi, from the non-pathogenic Entamoeba coli based on the number of nuclei present in the cells. This study presents sediMAX 2 as an automatic aid to traditional microscopy.
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Affiliation(s)
- J Intra
- Department of Laboratory Medicine, University Milano Bicocca, Desio Hospital, via Mazzini 1, 20833, Desio, MB, Italy.
| | - M R Sala
- Department of Laboratory Medicine, University Milano Bicocca, Desio Hospital, via Mazzini 1, 20833, Desio, MB, Italy
| | - R Falbo
- Department of Laboratory Medicine, University Milano Bicocca, Desio Hospital, via Mazzini 1, 20833, Desio, MB, Italy
| | - F Cappellini
- Department of Laboratory Medicine, University Milano Bicocca, Desio Hospital, via Mazzini 1, 20833, Desio, MB, Italy
| | - P Brambilla
- Department of Laboratory Medicine, University Milano Bicocca, Desio Hospital, via Mazzini 1, 20833, Desio, MB, Italy
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Intra J, Taverna E, Sala MR, Falbo R, Cappellini F, Brambilla P. Detection of intestinal parasites by use of the cuvette-based automated microscopy analyser sediMAX(®). Clin Microbiol Infect 2015; 22:279-84. [PMID: 26679923 DOI: 10.1016/j.cmi.2015.11.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [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: 06/10/2015] [Revised: 10/10/2015] [Accepted: 11/26/2015] [Indexed: 10/22/2022]
Abstract
Microscopy is the reference method for intestinal parasite identification. The cuvette-based automated microscopy analyser, sediMAX 1, provides 15 digital images of each sediment sample. In this study, we have evaluated this fully automated instrument for detection of enteric parasites, helminths and protozoa. A total of 700 consecutively preserved samples consisting of 60 positive samples (50 protozoa, ten helminths) and 640 negative samples were analysed. Operators were blinded to each others' results. Samples were randomized and were tested both by manual microscopy and sediMAX 1 for parasite recognition. The sediMAX 1 analysis was conducted using a dilution of faecal samples, allowing determination of morphology. The data obtained using sediMAX 1 showed a specificity of 100% and a sensitivity of 100%. Some species of helminths, such as Enterobius vermicularis, Strongyloides stercolaris, the Ancylostoma duodenale/Necator americanus complex, and schistosomes were not considered in this work, because they are rare in stool specimens, are not easily detectable with microscopy analysis, and require specific recovery techniques. This study demonstrated for the first time that sediMAX 1 can be an aid in enteric parasite identification.
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Affiliation(s)
- J Intra
- Department of Laboratory Medicine, University Milano Bicocca, Desio Hospital, Desio, Italy.
| | - E Taverna
- Department of Laboratory Medicine, University Milano Bicocca, Desio Hospital, Desio, Italy
| | - M R Sala
- Department of Laboratory Medicine, University Milano Bicocca, Desio Hospital, Desio, Italy
| | - R Falbo
- Department of Laboratory Medicine, University Milano Bicocca, Desio Hospital, Desio, Italy
| | - F Cappellini
- Department of Laboratory Medicine, University Milano Bicocca, Desio Hospital, Desio, Italy
| | - P Brambilla
- Department of Laboratory Medicine, University Milano Bicocca, Desio Hospital, Desio, Italy
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Intra J, Concetta V, Daniela DC, Perotti ME, Pasini ME. Drosophila sperm surface alpha-L-fucosidase interacts with the egg coats through its core fucose residues. Insect Biochem Mol Biol 2015; 63:133-143. [PMID: 26101846 DOI: 10.1016/j.ibmb.2015.06.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Revised: 06/17/2015] [Accepted: 06/18/2015] [Indexed: 06/04/2023]
Abstract
Sperm-oocyte interaction during fertilization is multiphasic, with multicomponent events, taking place between egg's glycoproteins and sperm surface receptors. Protein-carbohydrate complementarities in gamete recognition have observed in cases throughout the whole evolutionary scale. Sperm-associated α-L-fucosidases have been identified in various organisms. Their wide distribution and known properties reflect the hypothesis that fucose and α-L-fucosidases have fundamental function(s) during gamete interactions. An α-L-fucosidase has been detected as transmembrane protein on the surface of spermatozoa of eleven species across the genus Drosophila. Immunofluorescence labeling showed that the protein is localized in the sperm plasma membrane over the acrosome and the tail, in Drosophila melanogaster. In the present study, efforts were made to analyze with solid phase assays the oligosaccharide recognition ability of fruit fly sperm α-L-fucosidase with defined carbohydrate chains that can functionally mimic egg glycoconjugates. Our results showed that α-L-fucosidase bound to fucose residue and in particular it prefers N-glycans carrying core α1,6-linked fucose and core α1,3-linked fucose in N-glycans carrying only a terminal mannose residue. The ability of sperm α-L-fucosidase to bind to the micropylar chorion and to the vitelline envelope was examined in in vitro assays in presence of α-L-fucosidase, either alone or in combination with molecules containing fucose residues. No binding was detected when α-L-fucosidase was pre-incubated with fucoidan, a polymer of α-L-fucose and the monosaccharide fucose. Furthermore, egg labeling with anti-horseradish peroxidase, that recognized only core α1,3-linked fucose, correlates with α-L-fucosidase micropylar binding. Collectively, these data support the hypothesis of the potential role of this glycosidase in sperm-egg interactions in Drosophila.
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Affiliation(s)
- Jari Intra
- Department of Biosciences, University of Milano, via Celoria 26, Milano 20133, Italy.
| | - Veltri Concetta
- Department of Biosciences, University of Milano, via Celoria 26, Milano 20133, Italy
| | - De Caro Daniela
- Department of Biosciences, University of Milano, via Celoria 26, Milano 20133, Italy
| | - Maria Elisa Perotti
- Department of Biosciences, University of Milano, via Celoria 26, Milano 20133, Italy
| | - Maria Enrica Pasini
- Department of Biosciences, University of Milano, via Celoria 26, Milano 20133, Italy
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Xu Y, Intra J, Zhang CX, Pasini ME. Recombinant expression of Drosophila melanogaster α-L-fucosidase in Trichoplusia ni cells. J Insect Physiol 2011; 57:1205-1211. [PMID: 21708168 DOI: 10.1016/j.jinsphys.2011.05.008] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2011] [Revised: 05/12/2011] [Accepted: 05/17/2011] [Indexed: 05/31/2023]
Abstract
A cDNA encoding an α-l-fucosidase from Drosophila melanogaster was obtained from the recombinant plasmid named pGEM-DmFuca and inserted into the pBacHTeGFPT vector to construct the recombinant donor plasmid which was transposed to the target AcBacmid in Escherichia coli (DH10) by Tn7 transposition function. The AcBacmid-GFP-DmFuca plasmid was used to transfect Tn-5B1-4 cells of the Cabbage looper Trichoplusia ni. SDS-PAGE analysis revealed a band of about 80kDa. Using a polyclonal antiserum raised against α-l-fucosidase protein from D. melanogaster Western blotting analysis confirmed that the fusion protein eGFP-DmFuca has been successfully expressed in a biologically active form in Tn-5B1-4 cells. The recombinant protein, containing the histidine-tag motif, was purified using an affinity chromatography column. In vitro binding assays the purified eGFP-DmFuca interacts with α-l-fucose residues present on the micropyle of the D. melanogaster eggshell, confirming that the α-l-fucosidase is a good candidate as receptor involved in gamete interactions in fruit fly.
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Affiliation(s)
- Yipeng Xu
- Institute of Insect Science, Zhejiang University, Hangzhou, China
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Intra J, Perotti ME, Pasini ME. Cloning, sequence identification and expression profile analysis of α-L-fucosidase gene from the Mediterranean fruit fly Ceratitis capitata. J Insect Physiol 2011; 57:452-461. [PMID: 21272587 DOI: 10.1016/j.jinsphys.2011.01.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2010] [Revised: 01/14/2011] [Accepted: 01/14/2011] [Indexed: 05/30/2023]
Abstract
The Mediterranean fruit fly Ceratitis capitata (Diptera: Tephritidae) is one of the most destructive agricultural pests, a polyphagus insect of relevant economic importance and is widespread in many regions around the world. It is the best-studied fruit fly pest at genetic and molecular level and much has been learned on its ecology and behaviour. An α-L-fucosidase has been recently hypothesized to be involved in sperm-egg interactions in Drosophila melanogaster and in other Drosophila species. Here, a complete cDNA encoding a putative α-L-fucosidase of the medfly was amplified using the reverse polymerase chain reaction (RT-PCR) with degenerate based on the conserved coding sequence information of several insect α-L-fucosidases, cloned and sequenced (GenBank accession no. FJ177429). The coding region consisted of 1482 bp which encoded a 485-residues protein (named CcFUCA) with a predicted molecular mass of 56.1 kDa. The deduced protein sequence showed 75% amino acid identity to D. melanogaster α-L-fucosidase, and in fact the phylogenetic tree analysis revealed that CcFUCA had closer relationships with the α-L-fucosidases of drosophilid species. The tissue expression analysis indicated that CcFuca was expressed in a single transcript in all tissues, suggesting a ubiquitous localization pattern of the encoded protein. Our findings provide novel insights on a gene encoding a protein potentially involved in primary gamete interactions in C. capitata.
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Affiliation(s)
- Jari Intra
- Department of Biomolecular Sciences and Biotechnology, University of Milano, via Celoria 26, 20133 Milano, Italy
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Intra J, De Caro D, Perotti ME, Pasini ME. Glycosidases in the plasma membrane of Ceratitis capitata spermatozoa. Insect Biochem Mol Biol 2011; 41:90-100. [PMID: 21044684 DOI: 10.1016/j.ibmb.2010.10.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2010] [Revised: 10/05/2010] [Accepted: 10/27/2010] [Indexed: 05/30/2023]
Abstract
Fruit flies in the family Tephritidae are rated among the world's most destructive agricultural pests. The Mediterranean fruit fly Ceratitis capitata is emerging as a model organism to study the fertilization in Insects. Three integral proteins with glycosidase activity are present in the plasma membrane of spermatozoa. The glycosidases have been purified and characterized. We have demonstrated the presence of three enzymes, a β-N-acetylhexosaminidase, an α-mannosidase and an α-l-fucosidase. The molecular mass of the native enzymes estimated by gel filtration was 160 kDa for β-N-acetylhexosaminidase, 310 kDa for α-mannosidase and 140 kDa for α-l-fucosidase. SDS-PAGE showed that β-N-acetylhexosaminidase is a dimer of a single protein of 73 kDa, α-mannosidase consists of six subunits with different molecular weights and α-l-fucosidase is a dimer made up by two different monomers. Characterization of the purified enzymes included glycosylation pattern, pI, optimal pH, substrate preference, kinetic properties and thermal stability. Soluble forms similar to the sperm associated glycosidases are present. Polyclonal antibodies raised against synthetic peptides designed from the predicted products of the Drosophila melanogaster genes encoding β-N-acetylhexosaminidase and α-l-fucosidase were used. Immunofluorescence labelling of spermatozoa showed that the enzymes are present in the sperm plasma membrane overlying the acrosome and the tail. This work represents the first report on the characterization in C. capitata of sperm proteins that are potentially involved in primary gamete recognition.
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Affiliation(s)
- Jari Intra
- Department of Biomolecular Sciences and Biotechnology, University of Milano, via Celoria 26, 20133 Milano, Italy
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Pasini ME, Intra J, Gomulski LM, Calvenzani V, Petroni K, Briani F, Perotti ME. Identification and expression profiling of Ceratitis capitata genes coding for β-hexosaminidases. Gene 2010; 473:44-56. [PMID: 21094225 DOI: 10.1016/j.gene.2010.11.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2010] [Revised: 11/05/2010] [Accepted: 11/08/2010] [Indexed: 10/18/2022]
Abstract
The goal of this study was to identify the genes coding for β-N-acetylhexosaminidases in the Mediterranean fruit fly (medfly) Ceratitis capitata, one of the most destructive agricultural pests, belonging to the Tephritidae family, order Diptera. Two dimeric β-N-acetylhexosaminidases, HEXA and HEXB, have been recently identified on Drosophila sperm. These enzymes are involved in egg binding through interactions with complementary carbohydrates on the surface of the egg shell. Three genes, Hexosaminidase 1 (Hexo1), Hexosaminidase 2 (Hexo2) and fused lobes (fdl), encode for HEXA and HEXB subunits. The availability of C. capitata EST libraries derived from embryos and adult heads allowed us to identify three sequences homologous to the D. melanogaster Hexo1, Hexo2 and fdl genes. Here, we report the expression profile analysis of CcHexo1, CcHexo2 and Ccfdld in several tissues, organs and stages. Ccfdl expression was highest in heads of both sexes and in whole adult females. In the testis and ovary the three genes showed distinct spatial and temporal expression patterns. All the mRNAs were detectable in early stages of spermatogenesis; CcHexo2 and Ccfdl were also expressed in early elongating spermatid cysts. All three genes are expressed in the ovarian nurse cells. CcHexo1 and Ccfdl are stage specific, since they have been observed in stages 12 and 13 during oocyte growth, when programmed cell death occurs in nurse cells. The expression pattern of the three genes in medfly gonads suggests that, as their Drosophila counterparts, they may encode for proteins involved in gametogenesis and fertilization.
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Affiliation(s)
- Maria E Pasini
- Department of Biomolecular Sciences and Biotechnology, University of Milano, Milano, Italy.
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Pasini ME, Intra J, Pavesi G. Expression study of an α-l-fucosidase gene in the Drosophilidae family. Gene 2008; 420:23-33. [DOI: 10.1016/j.gene.2008.04.021] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2008] [Revised: 04/22/2008] [Accepted: 04/30/2008] [Indexed: 01/29/2023]
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Intra J, Pavesi G, Horner DS. Phylogenetic analyses suggest multiple changes of substrate specificity within the glycosyl hydrolase 20 family. BMC Evol Biol 2008; 8:214. [PMID: 18647384 PMCID: PMC2492878 DOI: 10.1186/1471-2148-8-214] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2008] [Accepted: 07/22/2008] [Indexed: 12/14/2022] Open
Abstract
Background Beta-N-acetylhexosaminidases belonging to the glycosyl hydrolase 20 (GH20) family are involved in the removal of terminal β-glycosidacally linked N-acetylhexosamine residues. These enzymes, widely distributed in microorganisms, animals and plants, are involved in many important physiological and pathological processes, such as cell structural integrity, energy storage, pathogen defence, viral penetration, cellular signalling, fertilization, development of carcinomas, inflammatory events and lysosomal storage diseases. Nevertheless, only limited analyses of phylogenetic relationships between GH20 genes have been performed until now. Results Careful phylogenetic analyses of 233 inferred protein sequences from eukaryotes and prokaryotes reveal a complex history for the GH20 family. In bacteria, multiple gene duplications and lineage specific gene loss (and/or horizontal gene transfer) are required to explain the observed taxonomic distribution. The last common ancestor of extant eukaryotes is likely to have possessed at least one GH20 family member. At least one gene duplication before the divergence of animals, plants and fungi as well as other lineage specific duplication events have given rise to multiple paralogous subfamilies in eukaryotes. Phylogenetic analyses also suggest that a second, divergent subfamily of GH20 family genes present in animals derive from an independent prokaryotic source. Our data suggest multiple convergent changes of functional roles of GH20 family members in eukaryotes. Conclusion This study represents the first detailed evolutionary analysis of the glycosyl hydrolase GH20 family. Mapping of data concerning physiological function of GH20 family members onto the phylogenetic tree reveals that apparently convergent and highly lineage specific changes in substrate specificity have occurred in multiple GH20 subfamilies.
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Affiliation(s)
- Jari Intra
- Dipartimento di Scienze Biomolecolari e Biotecnologie, Università di Milano, Via Celoria 26, 20133 Milano, Italy.
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Intra J, Cenni F, Pavesi G, Pasini M, Perotti ME. Interspecific analysis of the glycosidases of the sperm plasma membrane inDrosophila. Mol Reprod Dev 2008; 76:85-100. [DOI: 10.1002/mrd.20932] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Intra J, Perotti ME, Pavesi G, Horner D. Comparative and phylogenetic analysis of alpha-L-fucosidase genes. Gene 2006; 392:34-46. [PMID: 17175120 DOI: 10.1016/j.gene.2006.11.002] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2006] [Revised: 10/20/2006] [Accepted: 11/06/2006] [Indexed: 12/25/2022]
Abstract
Fucosylated glycoconjugates play a role in a wide variety of biological processes, including immune responses, signal transduction, ontogenic events and pathogenesis of several human diseases. Alpha-L-fucosidases, which are responsible for their processing, have been demonstrated to be involved in lysosomal storage disease, inflammation, cystic fibrosis, cancer development and in the interactions between gametes in vertebrates as well as invertebrates. The sequence and comparative genomic analysis of these glycosyl hydrolases and the study of their evolutionary relationships appear therefore to be of considerable interest. In this work we carried out extensive similarity searches and comparative analyses to identify sequences encoding alpha-L-fucosidases. We have identified novel alpha-L-fucosidase coding sequences in worms, insects, sea urchin, ascidians, fish, chicken, amphibians, mammals and various bacteria resulting in a total of 39 alpha-L-fucosidase sequences. Two alpha-L-fucosidases that are present in all vertebrates likely reflect a distinct biological role for paralogous genes. Comparative sequence analysis of all metazoan alpha-L-fucosidases reveals a broad conservation of features, including the aspartate residue that constitutes the catalytic nucleophile. However, a cysteine which is thought to be part of the active site is also conserved in metazoa but not in arthropods, where it is replaced by an alanine. Phylogenetic analysis suggests a gene duplication event very early in metazoan evolution with the subsequent differential loss of isoforms in various metazoan lineages.
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Affiliation(s)
- Jari Intra
- Dipartimento di Scienze Biomolecolari e Biotecnologie, Università di Milano, Via Celoria 26, 20133 Milano, Italy.
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Cattaneo F, Pasini ME, Intra J, Matsumoto M, Briani F, Hoshi M, Perotti ME. Identification and expression analysis of Drosophila melanogaster genes encoding beta-hexosaminidases of the sperm plasma membrane. Glycobiology 2006; 16:786-800. [PMID: 16733265 DOI: 10.1093/glycob/cwl007] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.7] [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: 11/12/2022] Open
Abstract
Sperm surface beta-N-acetylhexosaminidases are among the molecules mediating early gamete interactions in invertebrates and vertebrates, including man. The plasma membrane of Drosophila spermatozoa contains two beta-N-acetylhexosaminidases, DmHEXA and DmHEXB, which are required for egg fertilization. Here, we demonstrate that three putative Drosophila melanogaster genes predicted to code for beta-N-acetylhexosaminidases, Hexo1, Hexo2, and fdl, are all expressed in the male germ line. fdl codes for a homolog of the alpha-subunit of the mammalian lysosomal beta-N-acetylhexosaminidase Hex A. Hexo1 and Hexo2 encode two homologs of the beta-subunit of all known beta-N-acetylhexosaminidases, which we have named beta(1) and beta(2), respectively. Immunoblot analysis of sperm proteins indicated that the gene products associate in different heterodimeric combinations forming DmHEXA, with an alphabeta(2) structure, and DmHEXB, with a beta(1)beta(2) structure. Immunofluorescence demonstrated that all the gene products localized to the sperm plasma membrane. Although none of the genes was testis-specific, fdl was highly and preferentially expressed in the testis, whereas Hexo1 and Hexo2 showed broader tissue expression. Enzyme assays carried out on testis and on a variety of somatic tissues corroborated the results of gene expression analysis. These findings for the first time show the in vivo expression in insects of genes encoding beta-N-acetylhexosaminidases, the only molecules so far identified as involved in sperm/egg recognition in this class, whereas in mammals, the organisms where these enzymes have been best studied, only two types of polypeptide chains forming dimeric functional beta-N-acetylhexosaminidases are present in Drosophila three different gene products are available that might generate numerous dimeric isoforms.
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Affiliation(s)
- F Cattaneo
- Department of Biosciences and Informatics, Keio University, Kohoku Ku, Yokohama, Kanagawa 2238522, Japan
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Abstract
Drosophila is emerging as a model organism to investigate egg fertilization in insects and the possible conservation of molecular mechanisms of gamete interactions demonstrated in higher organisms. This study shows that the spermatozoa of several species of Drosophila belonging to the melanogaster group have a plasma membrane associated alpha-L-fucosidase with features in common with alpha-L-fucosidases from sperm of other animals, including mammals. The enzyme has been purified and completely characterized in D. ananassae, because of its stability in this species. The sperm alpha-L-fucosidase is an integral protein terminally mannosylated, with the catalytic site oriented toward the extracellular space. It has a M(r) of 256 kDa and a multimeric structure made up by subunits of 48 and 55 kDa. Enzyme characterization included kinetic properties, pI, optimal pH, and thermal stability. A soluble form of the enzyme similar to the sperm associated alpha-L-fucosidase is secreted by the seminal vesicles. Synthetic peptides designed from the deduced product of the D. melanogaster gene encoding an alpha-L-fucosidase were used to raise a specific polyclonal antibody. Immunofluorescence labeling of spermatozoa showed that the enzyme is present in the sperm plasma membrane overlying the acrosome and the tail. Lectin cytochemistry analysis of the egg surface indicated that alpha-L-fucose terminal residues are present on the chorion with a strongly polarized localization on the micropyle. The alpha-L-fucosidase of Drosophila sperm plasma membrane appears to be potentially involved in gamete recognition by interacting with its glycoside ligands present on the egg surface at the site of sperm entry.
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Affiliation(s)
- Jari Intra
- Department of Biomolecular Sciences and Biotechnologies, University of Milano, Milano, Italy
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