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Fac-simile Scheda Linee di Ricerca - Federalimentare

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Parole chiave- allergia alimentare- proteine- trattamenti tecnologici- <strong>di</strong>gestioneDati pubblicati inerenti il tema:1) Botton A., Vegro M., De Franceschi F., Ramina A., Gemignani C., Marcer G., Pasini G.Tonutti P. (2006). Different expression of Pp-LTP1 and accumulation of Pru p 3 in fruits oftwo Prunus persica L. Batsch genotypes. Plant Science, 171 (1), 106-113.The full-length cdnas of Pp-LTP1 and Pp-LTP2, two members of the lipid transfer protein (LTP) multigene familyin peach (Prunus persica L. Batsch), have been isolated along with the proximal promoter and the completegenomic sequence of Pp-LTP1. As observed in other plant species, Pp-LTP1 is organized in two exons and, accor<strong>di</strong>ngto the deduced amino acid sequence of the secreted protein, it encodes the 9 kda allergenic protein Pru p3. Pp-LTP1 transcripts and Pru p 3 protein markedly accumulate in epicarp of ripe fruit in all of the peach andnectarine varieties examined (inclu<strong>di</strong>ng ‘Royal Gem’) with the exception of ‘Rita Star’ that shows weak specificmrna hybri<strong>di</strong>zation signal and no Pru p 3 accumulation. SDS-PAGE clearly <strong>di</strong>splays a <strong>di</strong>fferent ban<strong>di</strong>ng patternin correspondence of 9 kda between ‘Rita Star’ and ‘Royal Gem’. In immunoblotting analysis, performed usingsera of eight LTP pos+ patients, a strong band is present when using ‘Royal Gem’ epicarp extract but not in thecase of ‘Rita Star’. Accor<strong>di</strong>ng to these data, ‘Rita Star’ appears an interesting model to better elucidate the roleof LTP in fruit development and allergenic reactions.2) Pasini G., Curioni A., Simonato B. (2006). Allergia alimentare alla pasta cotta. TecnicaMolitoria, 9, 937946.Lo scopo <strong>di</strong> questo lavoro è l’identificazione dei potenziali allergeni presenti nella semola <strong>di</strong> grano duro e nellapasta cotta e lo stu<strong>di</strong>o della loro evoluzione durante la <strong>di</strong>gestione proteolitica. Utilizzando sieri <strong>di</strong> pazienti conallergia alimentare al grano, sono stati in<strong>di</strong>viduati, tramite ige immunoblotting, i potenziali allergeni presentinella semola <strong>di</strong> grano duro e in un campione <strong>di</strong> pasta commerciale cotta. Alcune bande riconosciute dalle igenella semola non erano più rilevabili nella pasta, mentre altri allergeni rimanevano inalterati. Inoltre, la<strong>di</strong>gestione in vitro della pasta, provocava la scomparsa dei potenziali allergeni con PM >1 kda, mentre erarilevabile la presenza <strong>di</strong> pepti<strong>di</strong> ige reattivi <strong>di</strong> <strong>di</strong>mensioni inferiori.SISTAL - SOCIETA’ ITALIANA DI SCIENZE E TECNOLOGIE ALIMENTARIDipartimento <strong>di</strong> Scienze e Tecnologie Agroalimentari, Università degli Stu<strong>di</strong> della TusciaVia San Camillo de Lellis, 01100 ViterboTel.: 0761- 35 74 94/7 , Fax: 0761- 35 74 98, e-mail: mmoresi@unitus.it312

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