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Pozzato N, Piva E, Pallante I, Bombana D, Stella R, Zanardello C, Tata A, Piro R. Rapid detection of asperphenamate in a hay batch associated with constipation and deaths in dairy cattle. The application of DART-HRMS to veterinary forensic toxicology. Toxicon 2020; 187:122-128. [PMID: 32891666 DOI: 10.1016/j.toxicon.2020.08.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [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: 07/18/2020] [Revised: 08/18/2020] [Accepted: 08/30/2020] [Indexed: 12/19/2022]
Abstract
Direct analysis in real time (DART) coupled to high-resolution mass spectrometry (HRMS) was applied for the first time to veterinary forensic toxicology to investigate the presence of toxic compounds in hay after an episode of acute intoxication in a dairy cattle farm. In addition to gross field necropsy and histological examination, microbial cultures, and heavy metals analysis, the molecular fingerprinting of the suspected hay batch was investigated by DART-HRMS. DART-HRMS revealed a distinct signal of m/z 507.2289 in the hay batch thought to be associated with the digestive complications. A search on chemical structure databases matched the ion with asperphenamate, a toxin produced by Penicillium spp. and Aspergillus spp. Liquid Chromatography-HMRS analysis and electrospray-HRMS-MS/MS of the hay extracts further characterized the structure and confirmed the identification of the compound as asperphenamate. Asperphenamate is fungal metabolite which can have cytotoxic and antitumor activity in humans, and it is classified as acute toxicant and harmful if swallowed.
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Affiliation(s)
- Nicola Pozzato
- Laboratorio di Diagnostica Clinica e Sierologia di Piano, SCT1 Verona e Vicenza, Istituto Zooprofilattico Sperimentale delle Venezie, Via San Giacomo, 5, Verona, 37135, Italy.
| | - Elena Piva
- Laboratorio di Chimica Sperimentale, Istituto Zooprofilattico Sperimentale delle Venezie, Viale Fiume, 78, Vicenza, 36100, Italy.
| | - Ivana Pallante
- Laboratorio di Diagnostica Clinica e Sierologia di Piano, SCT1 Verona e Vicenza, Istituto Zooprofilattico Sperimentale delle Venezie, Via San Giacomo, 5, Verona, 37135, Italy.
| | - Dino Bombana
- Veterinary Practitioner, Villafranca di Verona, 37069, Italy.
| | - Roberto Stella
- Laboratorio residui e farmaci, Istituto Zooprofilattico Sperimentale delle Venezie, Viale dell'Università, 10, Legnaro, 35020, Italy.
| | - Claudia Zanardello
- Laboratorio di Diagnostica Specialistica e istopatologia, Istituto Zooprofilattico Sperimentale delle Venezie, Viale dell'Università, 10, Legnaro, 35020, Italy.
| | - Alessandra Tata
- Laboratorio di Chimica Sperimentale, Istituto Zooprofilattico Sperimentale delle Venezie, Viale Fiume, 78, Vicenza, 36100, Italy.
| | - Roberto Piro
- Laboratorio di Chimica Sperimentale, Istituto Zooprofilattico Sperimentale delle Venezie, Viale Fiume, 78, Vicenza, 36100, Italy.
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