{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,26]],"date-time":"2026-09-26T14:04:56Z","timestamp":1790431496359,"version":"4.1.0"},"reference-count":31,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2021,9,22]],"date-time":"2021-09-22T00:00:00Z","timestamp":1632268800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Microorganisms"],"abstract":"<jats:p>Taenia saginata is a helminth that can cause taeniasis in humans and cysticercosis in cattle. A species-specific diagnosis and differentiation from related species (e.g., Taenia solium) is crucial for individual patient management and disease control programs. Diagnostic stool microscopy is limited by low sensitivity and does not allow discrimination between T. saginata and T. solium. Molecular diagnostic approaches are not routinely available outside research laboratories. Recently, matrix-assisted laser desorption\/ionization time-of-flight (MALDI-TOF) mass spectrometry (MS) was proposed as a potentially suitable technique for species-specific helminth diagnosis. However, standardized protocols and commercial databases for parasite identification are currently unavailable, and pre-analytical factors have not yet been assessed. The purpose of this study was to employ MALDI-TOF MS for the identification of T. saginata proglottids obtained from a human patient, and to assess the effects of different sample storage media on the technique\u2019s diagnostic accuracy. We generated T. saginata-specific main spectral profiles and added them to an in-house database for MALDI-TOF MS-based diagnosis of different helminths. Based on protein spectra, T. saginata proglottids could be successfully differentiated from other helminths, as well as bacteria and fungi. Additionally, we analyzed T. saginata proglottids stored in (i) LC\u2013MS grade water; (ii) 0.45% sodium chloride; (iii) 70% ethanol; and (iv) 37% formalin after 2, 4, 6, 8, 12, and 24 weeks of storage. MALDI-TOF MS correctly identified 97.2\u201399.7% of samples stored in water, sodium chloride, and ethanol, with log-score values \u22652.5, thus indicating reliable species identification. In contrast, no protein spectra were obtained for samples stored in formalin. We conclude that MALDI-TOF-MS can be successfully employed for the identification of T. saginata, and that water, sodium chloride, and ethanol are equally effective storage solutions for prolonged periods of at least 24 weeks.<\/jats:p>","DOI":"10.3390\/microorganisms9102006","type":"journal-article","created":{"date-parts":[[2021,9,22]],"date-time":"2021-09-22T22:50:48Z","timestamp":1632351048000},"page":"2006","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["Evaluating Different Storage Media for Identification of Taenia saginata Proglottids Using MALDI-TOF Mass Spectrometry"],"prefix":"10.3390","volume":"9","author":[{"given":"Tabea P.","family":"Wendel","sequence":"first","affiliation":[{"name":"Institute of Medical Microbiology and Hygiene, Saarland University, 66421 Homburg, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2052-8975","authenticated-orcid":false,"given":"Maureen","family":"Feucherolles","sequence":"additional","affiliation":[{"name":"Environmental Research and Innovation Department, Luxembourg Institute of Science and Technology, L-4422 Belvaux, Luxembourg"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jacqueline","family":"Rehner","sequence":"additional","affiliation":[{"name":"Institute of Medical Microbiology and Hygiene, Saarland University, 66421 Homburg, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4873-249X","authenticated-orcid":false,"given":"Sven","family":"Poppert","sequence":"additional","affiliation":[{"name":"Swiss Tropical and Public Health Institute, CH-4002 Basel, Switzerland"},{"name":"University of Basel, CH-4003 Basel, Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J\u00fcrg","family":"Utzinger","sequence":"additional","affiliation":[{"name":"Swiss Tropical and Public Health Institute, CH-4002 Basel, Switzerland"},{"name":"University of Basel, CH-4003 Basel, Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3634-8802","authenticated-orcid":false,"given":"S\u00f6ren L.","family":"Becker","sequence":"additional","affiliation":[{"name":"Institute of Medical Microbiology and Hygiene, Saarland University, 66421 Homburg, Germany"},{"name":"Swiss Tropical and Public Health Institute, CH-4002 Basel, Switzerland"},{"name":"University of Basel, CH-4003 Basel, Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9103-8861","authenticated-orcid":false,"given":"Issa","family":"Sy","sequence":"additional","affiliation":[{"name":"Institute of Medical Microbiology and Hygiene, Saarland University, 66421 Homburg, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2021,9,22]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"349","DOI":"10.1186\/s13071-017-2280-8","article-title":"Epidemiology of taeniosis\/cysticercosis in Europe, a systematic review: Western Europe","volume":"10","author":"Devleesschauwer","year":"2017","journal-title":"Parasit. 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