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De Marchi L, Salemi L, Bellumori M, Chignola R, Mainente F, Santisteban Soto DV, Fierri I, Ciulu M, Zoccatelli G. Thermal degradation of red cabbage (Brassica oleracea L. var. Capitata f. rubra) anthocyanins in a water model extract under accelerated shelf-life testing. Food Chem 2024; 440:138272. [PMID: 38159318 DOI: 10.1016/j.foodchem.2023.138272] [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: 08/05/2023] [Revised: 11/28/2023] [Accepted: 12/22/2023] [Indexed: 01/03/2024]
Abstract
Red cabbage (RC) represents a source of anthocyanins acylated with hydroxycinnamic acids (HCA) that are described to enhance their stability. Nevertheless, data about their thermal degradation are still controversial. Our aim was to comprehensively analyse the degradation kinetics of individual RC anthocyanins in a model aqueous extract treated at 40 °C × 30 days to simulate severe but realistic storage conditions. Free anthocyanins and radical-scavenging capacity showed different kinetics. The results confirm the high stability of RC anthocyanins (t1/2: 16.4-18.4 days), although HPLC analyses of each molecule displayed distinct kinetics with t1/2 from 12.6 to 35.1 days. In particular, the sinapoyl acylation negatively affected the stability of the anthocyanins, while the forms monoacylated with glycosyl p-coumaric and ferulic acids exhibited higher stability. In conclusion, our results indicate that acylation is not a prerogative of stability, as this is instead more dependent on specific acylation patterns and the glycosylation of HCA.
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Affiliation(s)
- Laura De Marchi
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy
| | - Laura Salemi
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy
| | - Maria Bellumori
- Department of NEUROFARBA, University of Florence, Via Ugo Schiff, 6, 50019 Sesto F.no, Florence, Italy
| | - Roberto Chignola
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy
| | - Federica Mainente
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy
| | | | - Ilaria Fierri
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy
| | - Marco Ciulu
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy
| | - Gianni Zoccatelli
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy.
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Fierri I, De Marchi L, Chignola R, Rossin G, Bellumori M, Perbellini A, Mancini I, Romeo A, Ischia G, Saorin A, Mainente F, Zoccatelli G. Nanoencapsulation of Anthocyanins from Red Cabbage ( Brassica oleracea L. var. Capitata f. rubra) through Coacervation of Whey Protein Isolate and Apple High Methoxyl Pectin. Antioxidants (Basel) 2023; 12:1757. [PMID: 37760059 PMCID: PMC10525587 DOI: 10.3390/antiox12091757] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 09/07/2023] [Accepted: 09/11/2023] [Indexed: 09/29/2023] Open
Abstract
Encapsulation is a valuable strategy to protect and deliver anthocyanins (ACNs), phenolic compounds with outstanding antioxidant capacity but limited stability. In this study, coacervation was used to encapsulate an ACN-rich red cabbage extract (RCE). Two agri-food by-product polymers, whey protein isolate (WPI) and apple high-methoxyl pectin (HMP), were blended at pH 4.0 in a specific ratio to induce the formation of nanoparticles (NPs). The process optimisation yielded a monodispersed population (PDI < 0.200) of negatively charged (-17 mV) NPs with an average diameter of 380 nm. RCE concentration influenced size, charge, and antioxidant capacity in a dose-dependent manner. NPs were also sensitive to pH increases from 4 to 7, showing a progressive breakdown. The encapsulation efficiency was 30%, with the retention of ACNs within the polymeric matrix being influenced by their chemical structure: diacylated and/or C3-triglucoside forms were more efficiently encapsulated than monoacylated C3-diglucosides. In conclusion, we report a promising, simple, and sustainable method to produce monodispersed NPs for ACN encapsulation and delivery. Evidence of differential binding of ACNs to NPs, dependent on specific acylation/glycosylation patterns, indicates that care must be taken in the choice of the appropriate NP formulation for the encapsulation of phenolic compounds.
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Affiliation(s)
- Ilaria Fierri
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy; (I.F.); (L.D.M.); (R.C.); (G.R.); (A.P.); (A.S.); (F.M.)
| | - Laura De Marchi
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy; (I.F.); (L.D.M.); (R.C.); (G.R.); (A.P.); (A.S.); (F.M.)
| | - Roberto Chignola
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy; (I.F.); (L.D.M.); (R.C.); (G.R.); (A.P.); (A.S.); (F.M.)
| | - Giacomo Rossin
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy; (I.F.); (L.D.M.); (R.C.); (G.R.); (A.P.); (A.S.); (F.M.)
| | - Maria Bellumori
- Department of NEUROFARBA, University of Florence, Via Ugo Schiff 6, Sesto F.no, 50019 Florence, Italy;
| | - Anna Perbellini
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy; (I.F.); (L.D.M.); (R.C.); (G.R.); (A.P.); (A.S.); (F.M.)
| | - Ines Mancini
- Department of Physics, University of Trento, Via Sommarive 14, Povo, 38123 Trento, Italy;
| | - Alessandro Romeo
- Department of Computer Science, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy;
| | - Gloria Ischia
- Department of Industrial Engineering, University of Trento, Via Sommarive 9, Povo, 38123 Trento, Italy;
| | - Asia Saorin
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy; (I.F.); (L.D.M.); (R.C.); (G.R.); (A.P.); (A.S.); (F.M.)
| | - Federica Mainente
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy; (I.F.); (L.D.M.); (R.C.); (G.R.); (A.P.); (A.S.); (F.M.)
| | - Gianni Zoccatelli
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy; (I.F.); (L.D.M.); (R.C.); (G.R.); (A.P.); (A.S.); (F.M.)
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Vakarelova M, Zanoni F, Donà G, Fierri I, Chignola R, Gorrieri S, Zoccatelli G. Microencapsulation of astaxanthin by ionic gelation: effect of different gelling polymers on the carotenoid load, stability and bioaccessibility. Int J Food Sci Technol 2023. [DOI: 10.1111/ijfs.16389] [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: 03/05/2023]
Affiliation(s)
| | - Francesca Zanoni
- Sphera Encapsulation SRL, Villafranca di Verona 37062 Verona Italy
| | - Giulia Donà
- Sphera Encapsulation SRL, Villafranca di Verona 37062 Verona Italy
| | - Ilaria Fierri
- University of Verona Department of Biotechnology, Verona, 37134 Italy
| | - Roberto Chignola
- University of Verona Department of Biotechnology, Verona, 37134 Italy
| | - Sara Gorrieri
- University of Verona Department of Biotechnology, Verona, 37134 Italy
| | - Gianni Zoccatelli
- University of Verona Department of Biotechnology, Verona, 37134 Italy
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Chignola R, Mainente F, Zoccatelli G. Rheology of individual chitosan and polyphenol/chitosan microparticles for food engineering. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2022.107869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Mainente F, Piovan A, Zanoni F, Chignola R, Cerantola S, Faggin S, Giron MC, Filippini R, Seraglia R, Zoccatelli G. Spray-drying Microencapsulation of an Extract from Tilia tomentosa Moench Flowers: Physicochemical Characterization and in Vitro Intestinal Activity. Plant Foods Hum Nutr 2022; 77:467-473. [PMID: 35947287 PMCID: PMC9463327 DOI: 10.1007/s11130-022-00995-y] [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] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Accepted: 07/14/2022] [Indexed: 06/15/2023]
Abstract
Silver linden (Tilia tomentosa Moench, TtM) flowers possess several health-promoting properties, especially at the neurological level, such as intestinal relaxation activity associated with specific flavonols, particularly quercetin and kaempferol derivatives. However, such molecules are susceptible to degradation upon different triggers like heat, light and extreme pH values. To overcome the scarce stability of TtM flowers bioactive molecules and make them suitable for developing functional food and supplements, we applied microencapsulation. Spray-drying microencapsulation of TtM flowers extract was performed using three starch-derived wall materials: maltodextrin 12 DE (MD12) and 19 DE (MD19), and OSA-modified starch (OSA-S). The stability of total phenols, flavanols, and antioxidant capacity was monitored for 70 days under accelerated stress conditions (40 °C/70% RH) by HPLC and spectrophotometric methods, and the intestinal contractile activity was tested in a murine model. In comparison to MD12 and MD19, OSA-S stood out for the higher encapsulation efficiency of quercetin and kaempferol glycosides (+ 36-47% compared to MD12 and + 18-24% compared to MD19) and stability thereof (half-life on average + 30% compared to MD12 and + 51% compared to MD19). The intestinal contractile activity of OAS-S powders resulted comparable to the original extract, indicating that flavonols were biologically active and accessible. Our results underly the potential advantages of OSA-S encapsulated formulation as a functional ingredient for the development of nutraceutical products.
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Affiliation(s)
- Federica Mainente
- Department of Biotechnology, University of Verona, Strada Le Grazie, 15 - CV1, 37134, Verona, Italy
| | - Anna Piovan
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Via Marzolo, 5 - 35131, Padova, Italy
| | - Francesca Zanoni
- Sphera Encapsulation SRL, Via Alessandro Volta, 15A - 37062, Villafranca di Verona, Verona, Italy
| | - Roberto Chignola
- Department of Biotechnology, University of Verona, Strada Le Grazie, 15 - CV1, 37134, Verona, Italy
| | - Silvia Cerantola
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Via Marzolo, 5 - 35131, Padova, Italy
| | - Sofia Faggin
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Via Marzolo, 5 - 35131, Padova, Italy
| | - Maria Cecilia Giron
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Via Marzolo, 5 - 35131, Padova, Italy
- IRCCS San Camillo Hospital, Via Alberoni, 70 - 30126, Venice, Italy
| | - Raffaella Filippini
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Via Marzolo, 5 - 35131, Padova, Italy
| | | | - Gianni Zoccatelli
- Department of Biotechnology, University of Verona, Strada Le Grazie, 15 - CV1, 37134, Verona, Italy.
- Sphera Encapsulation SRL, Via Alessandro Volta, 15A - 37062, Villafranca di Verona, Verona, Italy.
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Cerantola S, Faggin S, Annaloro G, Mainente F, Filippini R, Savarino EV, Piovan A, Zoccatelli G, Giron MC. Influence of Tilia tomentosa Moench Extract on Mouse Small Intestine Neuromuscular Contractility. Nutrients 2021; 13:nu13103505. [PMID: 34684506 PMCID: PMC8541069 DOI: 10.3390/nu13103505] [Citation(s) in RCA: 3] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 09/28/2021] [Accepted: 10/01/2021] [Indexed: 12/13/2022] Open
Abstract
Functional gastrointestinal disorders (FGIDs) are characterized by abdominal pain, bloating and bowel disturbances. FGID therapy is primarily symptomatic, including treatment with herbal remedies. Flower extract of Tilia tomentosa Moench (TtM) is occasionally used as an anti-spasmodic in popular medicine. Since its effect on intestinal response is unknown, we evaluated the influence of TtM extract on small intestine contractility. Ileal preparations from C57BL/6J mice were mounted in organ baths to assess changes in muscle tension, following addition of TtM extract (0.5–36 μg/mL) or a vehicle (ethanol). Changes in contractile response to receptor- and non-receptor-mediated stimuli were assessed in ileal preparations pretreated with 12 μg/mL TtM. Alterations in the enteric nervous system neuroglial network were analyzed by confocal immunofluorescence. Increasing addition of TtM induced a marked relaxation in ileal specimens compared to the vehicle. Pretreatment with TtM affected cholinergic and tachykininergic neuromuscular contractions as well as K+-induced smooth muscle depolarization. Following incubation with TtM, a significant reduction in non-adrenergic non-cholinergic-mediated relaxation sensitive to Nω-Nitro-L-arginine methyl ester hydrochloride (pan-nitric oxide synthase inhibitor) was found. In vitro incubation of intestinal specimens with TtM did not affect the myenteric plexus neuroglial network. Our findings show that TtM-induced intestinal relaxation is mediated by nitric oxide pathways, providing a pharmacological basis for the use of TtM in FGIDs.
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Affiliation(s)
- Silvia Cerantola
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, 35131 Padova, Italy; (S.C.); (S.F.); (G.A.); (R.F.); (A.P.)
| | - Sofia Faggin
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, 35131 Padova, Italy; (S.C.); (S.F.); (G.A.); (R.F.); (A.P.)
| | - Gabriela Annaloro
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, 35131 Padova, Italy; (S.C.); (S.F.); (G.A.); (R.F.); (A.P.)
| | - Federica Mainente
- Department of Biotechnology, University of Verona, 37134 Verona, Italy; (F.M.); (G.Z.)
| | - Raffaella Filippini
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, 35131 Padova, Italy; (S.C.); (S.F.); (G.A.); (R.F.); (A.P.)
| | - Edoardo Vincenzo Savarino
- Department of Surgery, Oncological and Gastrointestinal Science, University of Padova, 35121 Padova, Italy;
| | - Anna Piovan
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, 35131 Padova, Italy; (S.C.); (S.F.); (G.A.); (R.F.); (A.P.)
| | - Gianni Zoccatelli
- Department of Biotechnology, University of Verona, 37134 Verona, Italy; (F.M.); (G.Z.)
| | - Maria Cecilia Giron
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, 35131 Padova, Italy; (S.C.); (S.F.); (G.A.); (R.F.); (A.P.)
- IRCCS San Camillo Hospital, 30126 Venice, Italy
- Correspondence: ; Tel.: +39-049-827-5091
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Binatti E, Zoccatelli G, Zanoni F, Donà G, Mainente F, Chignola R. Effects of Combination Treatments with Astaxanthin-Loaded Microparticles and Pentoxifylline on Intracellular ROS and Radiosensitivity of J774A.1 Macrophages. Molecules 2021; 26:molecules26175152. [PMID: 34500586 PMCID: PMC8433905 DOI: 10.3390/molecules26175152] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 08/23/2021] [Accepted: 08/24/2021] [Indexed: 01/23/2023] Open
Abstract
Radiation-induced fibrosis (RIF) is a serious, yet incurable, complication of external beam radiation therapy for the treatment of cancer. Macrophages are key cellular actors in RIF because of their ability to produce reactive oxidants, such as reactive oxygen species (ROS) and inflammatory cytokines that, in turn, are the drivers of pro-fibrotic pathways. In a previous work, we showed that phagocytosis could be exploited to deliver the potent natural antioxidant astaxanthin specifically to macrophages. For this purpose, astaxanthin encapsulated into µm-sized protein particles could specifically target macrophages that can uptake the particles by phagocytosis. In these cells, astaxanthin microparticles significantly reduced intracellular ROS levels and the secretion of bioactive TGFβ and increased cell survival after radiation treatments. Here we show that pentoxifylline, a drug currently used for the treatment of muscle pain resulting from peripheral artery disease, amplifies the effects of astaxanthin microparticles on J774A.1 macrophages. Combination treatments with pentoxifylline and encapsulated astaxanthin might reduce the risk of RIF in cancer patients.
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Affiliation(s)
- Eleonora Binatti
- Department of Biotechnology, University of Verona, Strada Le Grazie 15-CV1, I-37134 Verona, Italy; (G.Z.); (F.M.); (R.C.)
- Correspondence:
| | - Gianni Zoccatelli
- Department of Biotechnology, University of Verona, Strada Le Grazie 15-CV1, I-37134 Verona, Italy; (G.Z.); (F.M.); (R.C.)
- Sphera Encapsulation S.r.l., Strada Le Grazie 15-CV1, I-37134 Verona, Italy; (F.Z.); (G.D.)
| | - Francesca Zanoni
- Sphera Encapsulation S.r.l., Strada Le Grazie 15-CV1, I-37134 Verona, Italy; (F.Z.); (G.D.)
| | - Giulia Donà
- Sphera Encapsulation S.r.l., Strada Le Grazie 15-CV1, I-37134 Verona, Italy; (F.Z.); (G.D.)
| | - Federica Mainente
- Department of Biotechnology, University of Verona, Strada Le Grazie 15-CV1, I-37134 Verona, Italy; (G.Z.); (F.M.); (R.C.)
| | - Roberto Chignola
- Department of Biotechnology, University of Verona, Strada Le Grazie 15-CV1, I-37134 Verona, Italy; (G.Z.); (F.M.); (R.C.)
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Abstract
PURPOSE OF REVIEW The recent introduction of edible insects in Western countries has raised concerns about their safety in terms of allergenic reactions. The characterization of insect allergens, the sensitization and cross-reactivity mechanisms, and the effects of food processing represent crucial information for risk assessment. RECENT FINDINGS Allergic reactions to different insects and cross-reactivity with crustacean and inhalant allergens have been described, with the identification of new IgE-binding proteins besides well-known pan-allergens. Depending on the route of sensitization, different potential allergens seem to be involved. Food processing may affect the solubility and the immunoreactivity of insect allergens, with results depending on species and type of proteins. Chemical/enzymatic hydrolysis, in some cases, abolishes immunoreactivity. More studies based on subjects with a confirmed insect allergy are necessary to identify major and minor allergens and the role of the route of sensitization. The effects of processing need to be further investigated to assess the risk associated with the ingestion of insect-containing food products.
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Affiliation(s)
- Laura De Marchi
- Department of Biotechnology, University of Verona, Verona, Italy
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Bellumori M, De Marchi L, Mainente F, Zanoni F, Cecchi L, Innocenti M, Mulinacci N, Zoccatelli G. A by‐product from virgin olive oil production (pâté) encapsulated by fluid bed coating: evaluation of the phenolic profile after shelf‐life test and
in
vitro
gastrointestinal digestion. Int J Food Sci Technol 2021. [DOI: 10.1111/ijfs.15068] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Maria Bellumori
- Department of NEUROFARBA Division of Pharmaceutical and Nutraceutical Sciences University of Florence via U. Schiff 6, 50019 Sesto F.no Florence Italy
| | - Laura De Marchi
- Department of Biotechnology University of Verona Strada Le Grazie 15 Verona37134Italy
| | - Federica Mainente
- Department of Biotechnology University of Verona Strada Le Grazie 15 Verona37134Italy
| | | | - Lorenzo Cecchi
- Department of NEUROFARBA Division of Pharmaceutical and Nutraceutical Sciences University of Florence via U. Schiff 6, 50019 Sesto F.no Florence Italy
| | - Marzia Innocenti
- Department of NEUROFARBA Division of Pharmaceutical and Nutraceutical Sciences University of Florence via U. Schiff 6, 50019 Sesto F.no Florence Italy
| | - Nadia Mulinacci
- Department of NEUROFARBA Division of Pharmaceutical and Nutraceutical Sciences University of Florence via U. Schiff 6, 50019 Sesto F.no Florence Italy
| | - Gianni Zoccatelli
- Department of Biotechnology University of Verona Strada Le Grazie 15 Verona37134Italy
- Sphera Encapsulation Srl Verona37134Italy
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De Marchi L, Mainente F, Leonardi M, Scheurer S, Wangorsch A, Mahler V, Pilolli R, Sorio D, Zoccatelli G. Allergenicity assessment of the edible cricket Acheta domesticus in terms of thermal and gastrointestinal processing and IgE cross-reactivity with shrimp. Food Chem 2021; 359:129878. [PMID: 33934031 DOI: 10.1016/j.foodchem.2021.129878] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 03/26/2021] [Accepted: 03/29/2021] [Indexed: 10/21/2022]
Abstract
The allergenic potency of the cricket Acheta domesticus, a promising edible insect, has never been assessed. This work aims to study the immunoreactivity of Acheta domesticus, and its cross-reactivity with the shrimp Litopenaeus vannamei, assessing the effect of cooking and gastrointestinal digestion on their allergenic properties. Different cricket proteins were detected by immunoblotting with shrimp-allergic patients' sera. Tropomyosin was identified as the most relevant IgE-binding protein, and its cross-reactivity with shrimp tropomyosin was demonstrated by ELISA. While shrimp tropomyosin showed scarce stability to gastric digestion, cricket tropomyosin withstood the whole digestion process. The sarcoplasmic calcium-binding protein, specifically detected in shrimp, showed exceptional stability to gastrointestinal digestion. IgE-binding proteins in a model of enriched baked products were partially protected from proteolysis. In conclusion, the ingestion of A. domesticus proteins poses serious concerns to the Crustacean-allergic population. The high stability of tropomyosin may represent a risk of primary sensitization and clinical cross-reactivity.
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Affiliation(s)
- Laura De Marchi
- University of Verona, Department of Biotechnology, Verona, Italy
| | | | - Massimo Leonardi
- University of Verona, Department of Biotechnology, Verona, Italy
| | | | | | - Vera Mahler
- Paul-Ehrlich-Institut, Division of Allergology, Langen, Germany; Allergy Unit, Dept. of Dermatology, University Hospital Erlangen, Medical Faculty, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Rosa Pilolli
- Institute of Sciences of Food Production, CNR-ISPA, 70126 Bari, Italy
| | - Daniela Sorio
- University of Verona, Department of Biotechnology, Verona, Italy
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Binatti E, Zoccatelli G, Zanoni F, Donà G, Mainente F, Chignola R. Phagocytosis of Astaxanthin-Loaded Microparticles Modulates TGF β Production and Intracellular ROS Levels in J774A.1 Macrophages. Mar Drugs 2021; 19:md19030163. [PMID: 33808703 PMCID: PMC8003388 DOI: 10.3390/md19030163] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 03/16/2021] [Accepted: 03/16/2021] [Indexed: 12/30/2022] Open
Abstract
Radiation-induced fibrosis is a serious long-lasting side effect of radiation therapy. Central to this condition is the role of macrophages that, activated by radiation-induced reactive oxygen species and tissue cell damage, produce pro-inflammatory cytokines, such as transforming growth factor beta (TGFβ). This, in turn, recruits fibroblasts at the site of the lesion that initiates fibrosis. We investigated whether astaxanthin, an antioxidant molecule extracted from marine and freshwater organisms, could help control macrophage activation. To this purpose, we encapsulated food-grade astaxanthin from Haematococcus pluvialis into micrometer-sized whey protein particles to specifically target macrophages that can uptake material within this size range by phagocytosis. The data show that astaxanthin-loaded microparticles are resistant to radiation, are well-tolerated by J774A.1 macrophages, induce in these cells a significant reduction of intracellular reactive oxygen species and inhibit the release of active TGFβ as evaluated in a bioassay with transformed MFB-F11 fibroblasts. Micro-encapsulation of bioactive molecules is a promising strategy to specifically target phagocytic cells and modulate their own functions.
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Affiliation(s)
- Eleonora Binatti
- Department of Biotechnology, University of Verona, Strada Le Grazie 15-Cv1, I-37134 Verona, Italy; (E.B.); (G.Z.); (F.M.)
| | - Gianni Zoccatelli
- Department of Biotechnology, University of Verona, Strada Le Grazie 15-Cv1, I-37134 Verona, Italy; (E.B.); (G.Z.); (F.M.)
- Sphera Encapsulation S.r.l., Strada Le Grazie 15-Cv1, I-37134 Verona, Italy; (F.Z.); (G.D.)
| | - Francesca Zanoni
- Sphera Encapsulation S.r.l., Strada Le Grazie 15-Cv1, I-37134 Verona, Italy; (F.Z.); (G.D.)
| | - Giulia Donà
- Sphera Encapsulation S.r.l., Strada Le Grazie 15-Cv1, I-37134 Verona, Italy; (F.Z.); (G.D.)
| | - Federica Mainente
- Department of Biotechnology, University of Verona, Strada Le Grazie 15-Cv1, I-37134 Verona, Italy; (E.B.); (G.Z.); (F.M.)
| | - Roberto Chignola
- Department of Biotechnology, University of Verona, Strada Le Grazie 15-Cv1, I-37134 Verona, Italy; (E.B.); (G.Z.); (F.M.)
- Correspondence:
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Perozeni F, Cazzaniga S, Baier T, Zanoni F, Zoccatelli G, Lauersen KJ, Wobbe L, Ballottari M. Turning a green alga red: engineering astaxanthin biosynthesis by intragenic pseudogene revival in Chlamydomonas reinhardtii. Plant Biotechnol J 2020; 18:2053-2067. [PMID: 32096597 PMCID: PMC7540493 DOI: 10.1111/pbi.13364] [Citation(s) in RCA: 76] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 02/11/2020] [Accepted: 02/21/2020] [Indexed: 05/03/2023]
Abstract
The green alga Chlamydomonas reinhardtii does not synthesize high-value ketocarotenoids like canthaxanthin and astaxanthin; however, a β-carotene ketolase (CrBKT) can be found in its genome. CrBKT is poorly expressed, contains a long C-terminal extension not found in homologues and likely represents a pseudogene in this alga. Here, we used synthetic redesign of this gene to enable its constitutive overexpression from the nuclear genome of C. reinhardtii. Overexpression of the optimized CrBKT extended native carotenoid biosynthesis to generate ketocarotenoids in the algal host causing noticeable changes the green algal colour to reddish-brown. We found that up to 50% of native carotenoids could be converted into astaxanthin and more than 70% into other ketocarotenoids by robust CrBKT overexpression. Modification of the carotenoid metabolism did not impair growth or biomass productivity of C. reinhardtii, even at high light intensities. Under different growth conditions, the best performing CrBKT overexpression strain was found to reach ketocarotenoid productivities up to 4.3 mg/L/day. Astaxanthin productivity in engineered C. reinhardtii shown here might be competitive with that reported for Haematococcus lacustris (formerly pluvialis) which is currently the main organism cultivated for industrial astaxanthin production. In addition, the extractability and bio-accessibility of these pigments were much higher in cell wall-deficient C. reinhardtii than the resting cysts of H. lacustris. Engineered C. reinhardtii strains could thus be a promising alternative to natural astaxanthin producing algal strains and may open the possibility of other tailor-made pigments from this host.
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Affiliation(s)
| | | | - Thomas Baier
- Faculty of BiologyCenter for Biotechnology (CeBiTec)Bielefeld UniversityBielefeldGermany
| | | | | | - Kyle J. Lauersen
- Faculty of BiologyCenter for Biotechnology (CeBiTec)Bielefeld UniversityBielefeldGermany
| | - Lutz Wobbe
- Faculty of BiologyCenter for Biotechnology (CeBiTec)Bielefeld UniversityBielefeldGermany
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13
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Wangorsch A, Kulkarni A, Jamin A, Spiric J, Bräcker J, Brockmeyer J, Mahler V, Blanca‐López N, Ferrer M, Blanca M, Torres M, Gomez P, Bartra J, García‐Moral A, Goikoetxea MJ, Vieths S, Toda M, Zoccatelli G, Scheurer S. Identification and Characterization of IgE‐Reactive Proteins and a New Allergen (Cic a 1.01) from Chickpea (
Cicer arietinum
). Mol Nutr Food Res 2020; 64:e2000560. [DOI: 10.1002/mnfr.202000560] [Citation(s) in RCA: 5] [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: 06/09/2020] [Revised: 08/04/2020] [Indexed: 11/06/2022]
Affiliation(s)
- Andrea Wangorsch
- Division Allergology and Section Molecular Allergology Paul‐Ehrlich‐Institut Paul‐Ehrlich‐Str. 2 63225 Langen Germany
| | - Anuja Kulkarni
- Division Allergology and Section Molecular Allergology Paul‐Ehrlich‐Institut Paul‐Ehrlich‐Str. 2 63225 Langen Germany
- Amity University Mumbai India
| | - Annette Jamin
- Division Allergology and Section Molecular Allergology Paul‐Ehrlich‐Institut Paul‐Ehrlich‐Str. 2 63225 Langen Germany
| | - Jelena Spiric
- Division Allergology and Section Molecular Allergology Paul‐Ehrlich‐Institut Paul‐Ehrlich‐Str. 2 63225 Langen Germany
| | - Julia Bräcker
- Analytical Food Chemistry University of Stuttgart Allmandring 5B 70569 Stuttgart Germany
| | - Jens Brockmeyer
- Analytical Food Chemistry University of Stuttgart Allmandring 5B 70569 Stuttgart Germany
| | - Vera Mahler
- Division Allergology and Section Molecular Allergology Paul‐Ehrlich‐Institut Paul‐Ehrlich‐Str. 2 63225 Langen Germany
| | | | - Marta Ferrer
- Department of Allergy, IdiSNA (Instituto de Investigación Sanitaria de Navarra) Clinica Universidad de Navarra Pio XII Pamplona 3631008 Spain
| | - Miguel Blanca
- Allergy Service Hospital Infanta Leonor Gran Via del Este 80 Madrid 28031 Spain
- Jefe de Servicio de Alergología Hospital Civil Plaza del Hospital Civil s/n, Pabellon 5, sotano Málaga 29009 Spain
| | - Maria Torres
- Jefe de Servicio de Alergología Hospital Civil Plaza del Hospital Civil s/n, Pabellon 5, sotano Málaga 29009 Spain
| | - Paqui Gomez
- Jefe de Servicio de Alergología Hospital Civil Plaza del Hospital Civil s/n, Pabellon 5, sotano Málaga 29009 Spain
| | - Joan Bartra
- Allergy Unit, Pneumology Department Clinic Hospital Sant Antoni Maria Claret, 167 Barcelona Catalunya 08025 Spain
- Institut d'Investigacions Biomediques August Pi i Sunyer (IDIBAPS) University of Barcelona Carrer del Rosselló, 149 Barcelona 08036 Spain
| | - Alba García‐Moral
- Allergy Unit, Pneumology Department Clinic Hospital Sant Antoni Maria Claret, 167 Barcelona Catalunya 08025 Spain
| | - María J. Goikoetxea
- Department of Allergy, IdiSNA (Instituto de Investigación Sanitaria de Navarra) Clinica Universidad de Navarra Pio XII Pamplona 3631008 Spain
| | - Stefan Vieths
- Division Allergology and Section Molecular Allergology Paul‐Ehrlich‐Institut Paul‐Ehrlich‐Str. 2 63225 Langen Germany
| | - Masako Toda
- Division Allergology and Section Molecular Allergology Paul‐Ehrlich‐Institut Paul‐Ehrlich‐Str. 2 63225 Langen Germany
- Laboratory of Food and Biomolecular Science, Graduate School of Agricultural Science Tohoku University Aramaki 468‐1, Aoba‐ku Sendai‐city 980‐8572 Japan
| | - Gianni Zoccatelli
- Department of Biotechnology University of Verona Strada le Grazie 15 Verona 37134 Italy
| | - Stephan Scheurer
- Division Allergology and Section Molecular Allergology Paul‐Ehrlich‐Institut Paul‐Ehrlich‐Str. 2 63225 Langen Germany
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14
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Zanoni F, Primiterra M, Angeli N, Zoccatelli G. Microencapsulation by spray-drying of polyphenols extracted from red chicory and red cabbage: Effects on stability and color properties. Food Chem 2020; 307:125535. [PMID: 31639574 DOI: 10.1016/j.foodchem.2019.125535] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [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: 05/14/2019] [Revised: 09/05/2019] [Accepted: 09/13/2019] [Indexed: 01/08/2023]
Abstract
The research of antioxidants and natural pigments to replace synthetic molecules is increasingly considering wastes from plant food supply chains. Red chicory (RCH) and red cabbage (RCA) are rich sources of polyphenols (PP), especially anthocyanins, well know natural pigments possessing strong antioxidant capacity and beneficial health effects. The aim of this work was to compare different solvents for PP extraction and to evaluate the effect of spray-drying encapsulation using modified starch on PP, antioxidant capacity (AOC) and color properties. Methanol:water (70:30) showed the best extraction capacity, while ethanol:water (70:30) extracts displayed the highest thermal stability. Ethanol:water extracts were spray-dried with a yield of 95-99% for both crops, while the efficiency of PP encapsulation was 79% (RCA) and 88% (RCH). Encapsulation improved retention of PP and AOC upon thermal treatment (RCH: 20-30%, RCA: 44-55%) without altering color properties. This process can be employed for the development of functional foods and supplements.
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Affiliation(s)
- Francesca Zanoni
- University of Verona, Department of Biotechnology, Verona, Italy; Sphera Encapsulation Srl, Verona, Italy
| | | | - Nicola Angeli
- MUSE, Limnology and Phycology Section, Trento, Italy
| | - Gianni Zoccatelli
- University of Verona, Department of Biotechnology, Verona, Italy; Sphera Encapsulation Srl, Verona, Italy.
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15
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Menin A, Zanoni F, Vakarelova M, Chignola R, Donà G, Rizzi C, Mainente F, Zoccatelli G. Effects of microencapsulation by ionic gelation on the oxidative stability of flaxseed oil. Food Chem 2018; 269:293-299. [DOI: 10.1016/j.foodchem.2018.06.144] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Revised: 06/22/2018] [Accepted: 06/30/2018] [Indexed: 02/06/2023]
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16
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Mainente F, Menin A, Alberton A, Zoccatelli G, Rizzi C. Evaluation of the sensory and physical properties of meat and fish derivatives containing grape pomace powders. Int J Food Sci Technol 2018. [DOI: 10.1111/ijfs.13850] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Federica Mainente
- Department of Biotechnology University of Verona Strada Le Grazie 15 Verona 37134 Italy
| | - Alessia Menin
- Department of Biotechnology University of Verona Strada Le Grazie 15 Verona 37134 Italy
| | - Angelica Alberton
- Department of Biotechnology University of Verona Strada Le Grazie 15 Verona 37134 Italy
| | - Gianni Zoccatelli
- Department of Biotechnology University of Verona Strada Le Grazie 15 Verona 37134 Italy
| | - Corrado Rizzi
- Department of Biotechnology University of Verona Strada Le Grazie 15 Verona 37134 Italy
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17
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Commisso M, Bianconi M, Di Carlo F, Poletti S, Bulgarini A, Munari F, Negri S, Stocchero M, Ceoldo S, Avesani L, Assfalg M, Zoccatelli G, Guzzo F. Multi-approach metabolomics analysis and artificial simplified phytocomplexes reveal cultivar-dependent synergy between polyphenols and ascorbic acid in fruits of the sweet cherry (Prunus avium L.). PLoS One 2017; 12:e0180889. [PMID: 28732012 PMCID: PMC5521804 DOI: 10.1371/journal.pone.0180889] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Accepted: 06/21/2017] [Indexed: 01/10/2023] Open
Abstract
Fruits of the sweet cherry (Prunus avium L.) accumulate a range of antioxidants that can help to prevent cardiovascular disease, inflammation and cancer. We tested the in vitro antioxidant activity of 18 sweet cherry cultivars collected from 12 farms in the protected geographical indication region of Marostica (Vicenza, Italy) during two growing seasons. Multiple targeted and untargeted metabolomics approaches (NMR, LC-MS, HPLC-DAD, HPLC-UV) as well as artificial simplified phytocomplexes representing the cultivars Sandra Tardiva, Sandra and Grace Star were then used to determine whether the total antioxidant activity reflected the additive effects of each compound or resulted from synergistic interactions. We found that the composition of each cultivar depended more on genetic variability than environmental factors. Furthermore, phenolic compounds were the principal source of antioxidant activity and experiments with artificial simplified phytocomplexes indicated strong synergy between the anthocyanins and quercetins/ascorbic acid specifically in the cultivar Sandra Tardiva. Our data therefore indicate that the total antioxidant activity of sweet cherry fruits may originate from cultivar-dependent interactions among different classes of metabolite.
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Affiliation(s)
- Mauro Commisso
- Department of Biotechnology, University of Verona, Verona, Italy
| | - Martino Bianconi
- Department of Biotechnology, University of Verona, Verona, Italy
| | - Flavia Di Carlo
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies, University of Palermo, Palermo, Italy
| | - Stefania Poletti
- Department of Biotechnology, University of Verona, Verona, Italy
| | | | - Francesca Munari
- Department of Biotechnology, University of Verona, Verona, Italy
| | - Stefano Negri
- Department of Biotechnology, University of Verona, Verona, Italy
| | - Matteo Stocchero
- Department of Women’s and Children’s Health, University of Padova, Padova, Italy
| | - Stefania Ceoldo
- Department of Biotechnology, University of Verona, Verona, Italy
| | - Linda Avesani
- Department of Biotechnology, University of Verona, Verona, Italy
| | - Michael Assfalg
- Department of Biotechnology, University of Verona, Verona, Italy
| | | | - Flavia Guzzo
- Department of Biotechnology, University of Verona, Verona, Italy
- * E-mail:
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18
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Ghafarinazari A, Scarpa M, Zoccatelli G, Comes Franchini M, Locatelli E, Daldosso N. Hybrid luminescent porous silicon for efficient drug loading and release. RSC Adv 2017. [DOI: 10.1039/c6ra27102b] [Citation(s) in RCA: 6] [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] [Indexed: 11/21/2022] Open
Abstract
In recent decades, biocompatible and light emitting porous silicon (pSi) showed the possibility for use in biomedical applications.
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Affiliation(s)
- A. Ghafarinazari
- Department of Computer Science
- University of Verona
- 37134 Verona
- Italy
| | - M. Scarpa
- Department of Physics
- Istituto Nazionale Biostrutture Biosistemi
- University of Trento
- 38123 Trento
- Italy
| | - G. Zoccatelli
- Department of Biotechnology
- University of Verona
- 37134 Verona
- Italy
| | - M. Comes Franchini
- Department of Industrial Chemistry
- University of Bologna
- 40136 Bologna
- Italy
| | - E. Locatelli
- Department of Industrial Chemistry
- University of Bologna
- 40136 Bologna
- Italy
| | - N. Daldosso
- Department of Computer Science
- University of Verona
- 37134 Verona
- Italy
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19
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Treggiari D, Zoccatelli G, Chignola R, Molesini B, Minuz P, Pandolfini T. Tomato cystine-knot miniproteins possessing anti-angiogenic activity exhibit in vitro gastrointestinal stability, intestinal absorption and resistance to food industrial processing. Food Chem 2016; 221:1346-1353. [PMID: 27979099 DOI: 10.1016/j.foodchem.2016.11.020] [Citation(s) in RCA: 4] [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: 06/10/2016] [Revised: 10/07/2016] [Accepted: 11/02/2016] [Indexed: 02/04/2023]
Abstract
The cystine-knot miniproteins present in tomato fruit (TCMPs) have been shown to exert anti-angiogenic effects by inhibiting endothelial cell migration and to display resistance to gastrointestinal proteolytic attack. To better define the pharmacological potential of TCMPs, their oral bioavailability and their resistance to industrial processing must be assessed. To explore the intestinal transport of TCMPs we used the differentiated Caco-2 cells model. After 24h incubation, 37.73±9.34% of TCMPs crossed the epithelium, without altering the integrity of the cell layer. To assess the effects of the industrial processing on the biochemical features and the biological activity of TCMPs, we developed a method for purifying the proteins from tomato paste. The tomato-paste purified TCMPs retained the resistance to gastrointestinal digestion and the inhibitory activity towards endothelial cell migration. Our previous and present results collectively demonstrate that TCMPs possess interesting features for drug development.
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Affiliation(s)
- Davide Treggiari
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona Italy; Department of Medicine, Section of Internal Medicine, University of Verona, P.le L.A. Scuro 10, 37134 Verona Italy.
| | - Gianni Zoccatelli
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona Italy.
| | - Roberto Chignola
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona Italy.
| | - Barbara Molesini
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona Italy.
| | - Pietro Minuz
- Department of Medicine, Section of Internal Medicine, University of Verona, P.le L.A. Scuro 10, 37134 Verona Italy.
| | - Tiziana Pandolfini
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona Italy.
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20
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Rossin G, Villalta D, Martelli P, Cecconi D, Polverari A, Zoccatelli G. Grapevine Downy Mildew Plasmopara viticola Infection Elicits the Expression of Allergenic Pathogenesis-Related Proteins. Int Arch Allergy Immunol 2015; 168:90-5. [PMID: 26613254 DOI: 10.1159/000441792] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Accepted: 10/14/2015] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Downy mildews are a group of microorganisms belonging to the Chromista kingdom that can infect specific plants. When growing on plant tissues these microbes can elicit the expression of pathogenesis-related proteins (PRs), a group of stress-induced proteins frequently described as allergens in many plant species. Our aim was to verify by a proteomic approach whether the allergic reactions experienced by a farmer working in a vineyard infected by Plasmopara viticola (Pv), the etiological agent of downy mildew, are elicited by PRs expressed by the grapevine upon infection or by allergens present in Pv. METHODS A skin prick test and prick-to-prick test with infected field grapevine leaves and control leaves were carried out. Field leaves and ad hoc Pv-inoculated leaves were compared by SDS-PAGE and IgE-immunoblotting with extracts from control leaves and Pv sporangia. IgE-binding proteins were further separated by two-dimensional electrophoresis and the positive spots analyzed by nanoHPLC-Chip and tandem mass spectrometry (MS/MS) for identification. RESULTS Only infected leaves showed IgE-binding protein bands at 42 and 36 kDa. This agreed with the positive skin prick test experienced by the patient only with the infected leaves extract. Two-dimensional electrophoresis followed by MS/MS analysis led to the identification of PR-2 (β-1,3-glucanase) and harpin-binding protein 1 as putative allergens, the latter having never been reported before. CONCLUSION The results indicate that Pv infection might represent a new source of plant allergens.
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Affiliation(s)
- Giacomo Rossin
- Department of Biotechnology, University of Verona, Verona, Italy
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21
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Lombardo C, Bolla M, Chignola R, Senna G, Rossin G, Caruso B, Tomelleri C, Cecconi D, Brandolini A, Zoccatelli G. Study on the Immunoreactivity of Triticum monococcum (Einkorn) Wheat in Patients with Wheat-Dependent Exercise-Induced Anaphylaxis for the Production of Hypoallergenic Foods. J Agric Food Chem 2015; 63:8299-8306. [PMID: 26332577 DOI: 10.1021/acs.jafc.5b02648] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [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: 06/05/2023]
Abstract
Wheat [Triticum aestivum (T.a.)] ingestion can cause a specific allergic reaction, which is called wheat-dependent exercise-induced anaphylaxis (WDEIA). The major allergen involved is ω-5 gliadin, a gluten protein coded by genes located on the B genome. Our aim was to study the immunoreactivity of proteins in Triticum monococcum (einkorn, T.m.), a diploid ancestral wheat lacking B chromosomes, for possible use in the production of hypoallergenic foods. A total of 14 patients with a clear history of WDEIA and specific immunoglobulin E (IgE) to ω-5 gliadin were enrolled. Skin prick test (SPT) with a commercial wheat extract and an in-house T.a. gluten diagnostic solution tested positive for 43 and 100% of the cases, respectively. No reactivity in patients tested with solutions prepared from four T.m. accessions was observed. The immunoblotting of T.m. gluten proteins performed with the sera of patients showed different IgE-binding profiles with respect to T.a., confirming the absence of ω-5 gliadin. A general lower immunoreactivity of T.m. gluten proteins with scarce cross-reactivity to ω-5 gliadin epitopes was assessed by an enzyme-linked immunosorbent assay (ELISA). Given the absence of reactivity by SPT and the limited cross-reactivity with ω-5 gliadin, T.m. might represent a potential candidate in the production of hypoallergenic bakery products for patients sensitized to ω-5 gliadin. Further analyses need to be carried out regarding its safety.
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Affiliation(s)
| | - Michela Bolla
- Department of Biotechnology, University of Verona , 37134 Verona, Italy
| | - Roberto Chignola
- Department of Biotechnology, University of Verona , 37134 Verona, Italy
| | | | - Giacomo Rossin
- Department of Biotechnology, University of Verona , 37134 Verona, Italy
| | | | - Carlo Tomelleri
- Department of Biotechnology, University of Verona , 37134 Verona, Italy
| | - Daniela Cecconi
- Department of Biotechnology, University of Verona , 37134 Verona, Italy
| | | | - Gianni Zoccatelli
- Department of Biotechnology, University of Verona , 37134 Verona, Italy
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22
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Treggiari D, Zoccatelli G, Molesini B, Degan M, Rotino GL, Sala T, Cavallini C, MacRae CA, Minuz P, Pandolfini T. A cystine-knot miniprotein from tomato fruit inhibits endothelial cell migration and angiogenesis by affecting vascular endothelial growth factor receptor (VEGFR) activation and nitric oxide production. Mol Nutr Food Res 2015; 59:2255-66. [PMID: 26255647 DOI: 10.1002/mnfr.201500267] [Citation(s) in RCA: 12] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2015] [Revised: 06/29/2015] [Accepted: 07/23/2015] [Indexed: 01/23/2023]
Abstract
SCOPE Cystine-knot miniproteins are bioactive molecules with a broad range of potential therapeutic applications. Recently, it was demonstrated that two tomato cystine-knot miniproteins (TCMPs) exhibit in vitro antiangiogenic activity on human umbilical vein cells. The aim of the present study was to investigate the effects of a fruit-specific cystine-knot miniprotein of tomato on in vitro endothelial cell migration and in vivo angiogenesis using a zebrafish model. METHODS AND RESULTS The cystine-knot protein purified from tomato fruits using gel filtration LC and RP-HPLC inhibited cell migration when tested at 200 nM using the wound healing assay, and reduced nitric oxide formation probed by 4-amino-5-methylamino-27-difluorofluoscescin diacetate. RT-PCR and Western blot analyses demonstrated that vascular endothelium growth factor A dependent signaling was the target of TCMP bioactivity. Angiogenesis was inhibited in vivo in zebrafish embryos treated with 500 nM TCMP. CONCLUSION Our results demonstrate that cystine-knot miniproteins present in mature tomato fruits are endowed with antiangiogenic activity in vitro and in vivo. These molecules may confer beneficial effects to tomato dietary intake, along with lycopene and other antioxidants. Further investigation is warranted to explore the potential of these compounds as model scaffolds for the development of new drugs.
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Affiliation(s)
- Davide Treggiari
- Department of Biotechnology, University of Verona, Verona, Italy
| | | | - Barbara Molesini
- Department of Biotechnology, University of Verona, Verona, Italy
| | - Maurizio Degan
- Department of Medicine, Section of Internal Medicine, University of Verona, Verona, Italy
| | - Giuseppe Leonardo Rotino
- CRA-ORL Council for Agriculture Research and Economics, Research Unit for Vegetable Crops, Montanaso Lombardo, Lodi, Italy
| | - Tea Sala
- CRA-ORL Council for Agriculture Research and Economics, Research Unit for Vegetable Crops, Montanaso Lombardo, Lodi, Italy
| | - Chiara Cavallini
- L.U.R.M. University Laboratory for Medical Research, University of Verona, Verona, Italy
| | - Calum A MacRae
- Department of Medicine, Cardiovascular Medicine Division, Brigham and Women's Hospital, Boston, USA
| | - Pietro Minuz
- Department of Medicine, Section of Internal Medicine, University of Verona, Verona, Italy
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23
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Bolla M, Zenoni S, Scheurer S, Vieths S, San Miguel Moncin MDM, Olivieri M, Antico A, Ferrer M, Berroa F, Enrique E, Avesani L, Marsano F, Zoccatelli G. Pomegranate ( Punica granatum L.) Expresses Several nsLTP Isoforms Characterized by Different Immunoglobulin E-Binding Properties. Int Arch Allergy Immunol 2014; 164:112-21. [DOI: 10.1159/000362761] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2013] [Accepted: 04/09/2014] [Indexed: 11/19/2022] Open
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Veneri G, Zoccatelli G, Mosconi S, Pellegrina CD, Chignola R, Rizzi C. A Rapid Method for the Recovery, Quantification and Electrophoretic Analysis of Proteins from Beer. Journal of the Institute of Brewing 2012. [DOI: 10.1002/j.2050-0416.2006.tb00703.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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25
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Quercia O, Zoccatelli G, Stefanini GF, Mistrello G, Amato S, Bolla M, Emiliani F, Asero R. Allergy to beer in LTP-sensitized patients: beers are not all the same. Allergy 2012; 67:1186-9. [PMID: 22846084 DOI: 10.1111/j.1398-9995.2012.02872.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/04/2012] [Indexed: 11/28/2022]
Abstract
BACKGROUND Most cases of beer allergy reported so far have been associated with hypersensitivity to the non-specific lipid transfer protein (LTP). In view of the marked differences in brewing processes we assessed IgE reactivity as well as tolerance to many different beers in an allergic patient. METHODS A 45 year-old man hypersensitive to grass pollen, cat dander and Alternaria tenuis with a history of urticaria and dyspnoea after drinking beer and a weak skin reactivity to commercial corn extract was studied. The patient underwent SPT with 36 different brands of beer and an open challenge with those scoring negative was performed. An immunoblot analysis was carried out using 2 SPT-positive beers, 2 SPT-negative beers, and barley, wheat, and maize extracts using both patient's serum and a maize LTP-specific in-house developed polyclonal antibody from rabbit. Further, the immune reactive LTP of one beer was separated by HPLC and the chromatogram was compared to that of purified maize LTP. RESULTS Beer SPT scored positive in 30/36 cases. The immunoblot analysis showed IgE reactivity at about 10 kDa against the two SPT-positive beers and against maize with both patient's serum and the polyclonal anti-LTP rabbit serum, whereas the two SPT-negative beers, and barley extract scored negative. The immunodetected protein co-migrated with maize LTP. CONCLUSION In beer-allergic patients the diagnostic workup may point to the detection of some tolerated products that can be consumed risk-free.
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Affiliation(s)
| | - G. Zoccatelli
- Department of Biotechnology; University of Verona; Verona
| | | | | | | | - M. Bolla
- Department of Biotechnology; University of Verona; Verona
| | | | - R. Asero
- Ambulatorio di Allergologia; Clinica San Carlo; Paderno Dugnano; Italy
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Sega M, Zanetti C, Rizzi C, Olivieri M, Chignola R, Zoccatelli G. Production and characterisation of monoclonal antibodies for the quantification of potentially allergenic xylanase from Aspergillus niger. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2012; 29:1356-63. [PMID: 22823937 DOI: 10.1080/19440049.2012.698657] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Xylanase from Aspergillus niger (ANX) is widely used in bakeries as a processing aid since it stabilises and improves dough quality. An association between allergic symptoms among bakery workers and sensitisation to ANX has been reported, indicating that this enzyme is an occupational allergen. The presence of ANX in dough improvers and semi-finished goods is often hidden due to incomplete and unclear labelling. The quantification of microbial enzymes in these products is necessary and the determination of the actual concentration of ANX in workplaces is therefore essential to assess the occupational risk. To this purpose we have developed and characterised monoclonal antibodies to ANX. The monoclonal antibodies do not show any cross-reaction with other commonly used microbial enzymes, and they allow the detection of ANX in complex mixtures by ELISA inhibition assays down to the concentration limit of approximately 10 µg kg(-1). These mAbs are a valuable tool to detect and quantify ANX and to investigate its allergenic potential in the workplace.
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Affiliation(s)
- M Sega
- Department of Biotechnology, University of Verona, Verona, Italy
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27
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Zoccatelli G, Sega M, Bolla M, Cecconi D, Vaccino P, Rizzi C, Chignola R, Brandolini A. Expression of α-amylase inhibitors in diploid Triticum species. Food Chem 2012; 135:2643-9. [PMID: 22980853 DOI: 10.1016/j.foodchem.2012.06.123] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2011] [Revised: 05/11/2012] [Accepted: 06/21/2012] [Indexed: 11/24/2022]
Abstract
The aim of the work was to characterize the expression of various α-amylase inhibitors (αAIs), well known anti-nutritional compounds, for the development of healthier diploid wheat-based functional foods. The salt-soluble protein fractions from the seeds of 53 accessions among Triticum monococcum subsp. monococcum (T.m.), T. monococcum subsp. boeoticum (T.b.) and Triticum urartu (T.u.) were analyzed by immunoblotting after SDS-PAGE and Urea-PAGE using polyclonal antibodies (PABs) raised against 0.19 and 0.28 αAIs expressed in bread-wheat. Reverse zymography with human saliva and Tenebrio molitor α-amylases was used to assay inhibition activity. A great variability of the expression of αAI-related proteins was observed among T.b. and T.u. PABs, and reverse zymography revealed different bands, often not correlating with those present in bread-wheat. Two-dimensional electrophoresis followed by immunoblotting and mass spectrometric analysis identified these proteins as αAIs. Interestingly, no signal was observed within T.m. accessions. This makes T.m. an important candidate for the production of novel functional foods.
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28
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Mainente F, Simonato B, Zoccatelli G, Rizzi C. A Method for the Preparative Separation of Beer Proteins and Glycocompounds. Journal of the Institute of Brewing 2012. [DOI: 10.1002/j.2050-0416.2011.tb00490.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Bossi AM, Sharma PS, Montana L, Zoccatelli G, Laub O, Levi R. Fingerprint-Imprinted Polymer: Rational Selection of Peptide Epitope Templates for the Determination of Proteins by Molecularly Imprinted Polymers. Anal Chem 2012; 84:4036-41. [DOI: 10.1021/ac203422r] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Alessandra M. Bossi
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona,
Italy
| | - Piyush S. Sharma
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona,
Italy
| | - Luca Montana
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona,
Italy
| | - Gianni Zoccatelli
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona,
Italy
| | - Orgad Laub
- Infigo Diagnostics Limited, Ha Gavish 4A, Netanya 42101, Israel
| | - Raphael Levi
- Infigo Diagnostics Limited, Ha Gavish 4A, Netanya 42101, Israel
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30
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Milli A, Cecconi D, Bortesi L, Persi A, Rinalducci S, Zamboni A, Zoccatelli G, Lovato A, Zolla L, Polverari A. Proteomic analysis of the compatible interaction between Vitis vinifera and Plasmopara viticola. J Proteomics 2011; 75:1284-302. [PMID: 22120121 DOI: 10.1016/j.jprot.2011.11.006] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2011] [Revised: 10/13/2011] [Accepted: 11/04/2011] [Indexed: 11/26/2022]
Abstract
We analyzed the proteome of grapevine (Vitis vinifera) leaves 24, 48 and 96 h post infection (hpi) with the downy mildew pathogen Plasmopara viticola. Total proteins were separated on 2-DE gels. By MS analysis, we identified 82 unique grapevine proteins differentially expressed after infection. Upregulated proteins were often included in the functional categories of general metabolism and stress response, while proteins related to photosynthesis and energy production were mostly downregulated. As expected, the activation of a defense reaction was observed more often at the late time point, consistent with the establishment of a compatible interaction. Most proteins involved in resistance were isoforms of different PR-10 pathogenesis-related proteins. Although >50 differentially expressed protein isoforms were observed at 24 and 96 hpi, only 18 were detected at 48 hpi and no defense-related proteins were among this group. This profile suggests a transient breakdown in defense responses accompanying the onset of disease, further supported by gene expression analyses and by a western blot analysis of a PR-10 protein. Our data reveal the complex modulation of plant metabolism and defense responses during compatible interactions, and provide insight into the underlying molecular processes which may eventually yield novel strategies for pathogen control in the field.
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Affiliation(s)
- Alberto Milli
- Dept. of Biotechnology, University of Verona, Verona, Italy
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31
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Consolini M, Sega M, Zanetti C, Fusi M, Chignola R, De Carli M, Rizzi C, Zoccatelli G. Erratum to: Emulsification of Simulated Gastric Fluids Protects Wheat α-Amylase Inhibitor 0.19 Epitopes from Digestion. FOOD ANAL METHOD 2011. [DOI: 10.1007/s12161-011-9266-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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32
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Manganotti P, Storti SF, Formaggio E, Acler M, Zoccatelli G, Pizzini FB, Alessandrini F, Bertoldo A, Toffolo GM, Bovi P, Beltramello A, Moretto G, Fiaschi A. Effect of median-nerve electrical stimulation on BOLD activity in acute ischemic stroke patients. Clin Neurophysiol 2011; 123:142-53. [PMID: 21741301 DOI: 10.1016/j.clinph.2011.05.028] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [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: 01/10/2011] [Revised: 05/09/2011] [Accepted: 05/13/2011] [Indexed: 11/19/2022]
Abstract
OBJECTIVE To investigate blood oxygenation level-dependent (BOLD) activation during somatosensory electrical stimulation of the median nerve in acute stroke patients and to determine its correlation with ischemic damage and clinical recovery over time. METHODS Fourteen acute stroke patients underwent functional magnetic resonance imaging (fMRI) during contralesional median-nerve electrical stimulation 12-48 h after stroke. Findings were then validated by diffusion tensor imaging (DTI) and motor evoked potential by transcranial magnetic stimulation (TMS). RESULTS Poor clinical recovery at three months was noted in four patients with no activation in the early days after stroke, whereas good clinical recovery was observed in eight patients with a normal activation pattern in the primary sensory motor area in the acute phase. In two patients BOLD activation correlated weakly with clinical recovery. Findings from TMS and DTI partially correlated with clinical recovery and functional scores. CONCLUSIONS Clinically relevant insights into the "functional reserve" of stroke patients gained with peripheral nerve stimulation during fMRI may carry prognostic value already in the acute period of a cerebrovascular accident. SIGNIFICANCE BOLD activation maps could provide insights into the functional organization of the residual systems and could contribute to medical decision making in neurological and rehabilitative treatment.
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Affiliation(s)
- P Manganotti
- Department of Neurological, Neuropsychological, Morphological and Movement Sciences, Section of Clinical Neurology, University of Verona, Verona, Italy
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Manganotti P, Storti S, Formaggio E, Zoccatelli G, Alessandrini F, Pizzini F, Bovi P, Beltramello A, Fiaschi A, Moretto G. P21.11 Effect of median-nerve electrical stimulation on bold activity in acute ischemic stroke patients. Clin Neurophysiol 2011. [DOI: 10.1016/s1388-2457(11)60553-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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34
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Schülke S, Waibler Z, Mende MS, Zoccatelli G, Vieths S, Toda M, Scheurer S. Fusion protein of TLR5-ligand and allergen potentiates activation and IL-10 secretion in murine myeloid DC. Mol Immunol 2010; 48:341-50. [PMID: 20965571 DOI: 10.1016/j.molimm.2010.07.006] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2010] [Revised: 07/06/2010] [Accepted: 07/08/2010] [Indexed: 11/27/2022]
Abstract
Toll-like receptor ligands are immune-modulatory components linking innate and adaptive immune responses and are considered to be promising vaccine components. Objective of this study was to investigate the adjuvant activity of Listeria monocytogenesis-derived TLR5-ligand flagellin A (flaA) genetically fused to ovalbumin (Ova, major chicken white egg allergen) in a murine in vitro system. Recombinant flaA, rOva, and a fusion protein of rflaA and rOva (rflaA:Ova) were over-expressed in Escherchia coli and purified by FPLC. LPS depletion was confirmed by LAL test. TLR5-binding was evaluated by human and murine TLR5-transgenic HEK 293 cells. The immune-modulatory effect of rflaA:Ova and rflaA:Ova modified by reduction and alkylation on purified BALB/c bone marrow-derived myeloid (mDC) and plasmacytoid dendritic cells (pDC) was investigated by flow cytometry and intracellular cytokine staining (ICS). Dose-dependent IL-8 secretion from transgenic HEK 293 cells confirmed binding of rflaA and rflaA:Ova molecules to human and murine TLR5. Recombinant flaA showed similar biological reactivity to TLR5-ligand fliC derived from Salmonella typhimurium applied as positive control. Compared to rflaA, both rflaA:Ova preparations induced higher expression of maturation markers (CD40, CD69, CD80, and CD86) on mDC, whereas only CD69 and CD40 were upregulated on pDC. Moreover, IL-6 and IL-10 production by mDC was enhanced upon stimulation with rflaA:Ova constructs in comparison to an equimolar mixture of both proteins whereas pDC did not show secretion of the investigated cytokines. Any immunological effects of LPS can be excluded by depletion of endotoxins and the lack of IL-10 production upon proteinase K digestion of rflaA:Ova. In summary, the rflaA:Ova fusion proteins showed an enhanced immune modulating capacity in comparison to rflaA or the mixture of rflaA and antigen. Since the rflaA:Ova fusion proteins induce strong IL-10 induction they are considered as potential vaccine candidates to improve allergen-specific immunotherapy.
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Affiliation(s)
- Stefan Schülke
- Division of Allergology, Paul-Ehrlich-Institut, Langen, Germany
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35
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Vagnozzi R, Signoretti S, Cristofori L, Alessandrini F, Floris R, Isgro E, Ria A, Marziale S, Zoccatelli G, Tavazzi B, Del Bolgia F, Sorge R, Broglio SP, McIntosh TK, Lazzarino G. Assessment of metabolic brain damage and recovery following mild traumatic brain injury: a multicentre, proton magnetic resonance spectroscopic study in concussed patients. Brain 2010; 133:3232-42. [DOI: 10.1093/brain/awq200] [Citation(s) in RCA: 295] [Impact Index Per Article: 21.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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36
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Zoccatelli G, Pokoj S, Foetisch K, Bartra J, Valero A, Del Mar San Miguel-Moncin M, Vieths S, Scheurer S. Identification and characterization of the major allergen of green bean (Phaseolus vulgaris) as a non-specific lipid transfer protein (Pha v 3). Mol Immunol 2010; 47:1561-8. [PMID: 20153058 DOI: 10.1016/j.molimm.2010.01.009] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2009] [Accepted: 01/17/2010] [Indexed: 10/19/2022]
Abstract
BACKGROUND Green bean (GB) has been reported to cause allergic reactions after ingestion, contact or inhalation of particles deriving from processing or cooking. Up-to-date no food allergens have been fully characterized in GB. OBJECTIVE To characterize the GB major allergen(s) on a molecular level and to verify the involvement of non-specific lipid transfer proteins (nsLTPs) in GB allergy. METHODS We recruited 10 Spanish patients reporting adverse reactions to GB. Skin prick tests, specific IgE detection and oral provocation were performed. Two nsLTP cDNAs were cloned from GB and over-expressed in Pichia pastoris. The recombinant LTPs (rLTPs) were characterized by circular dichroism spectroscopy and IgE-binding assays (immunoblotting and ELISA) with the patients' sera. Three natural LTPs (nLTPs) were further purified from GB fruit by chromatography. In vitro histamine release test was applied to compare the allergenic potency of rLTPs and nLTPs. RESULTS Oral provocation test confirmed GB allergy. A 10kDa protein in GB extract was recognized by 80% of the sera and identified as nsLTP. The two rLTPs (named LTP1a and LTP1b), share 61.3% aa identity and present the typical nsLTP-like secondary structure. The IgE-binding and histamine release assays provided evidence that rLTPs and nLTPs possess different allergenic potency. CONCLUSIONS nsLTP (Pha v 3) is the major allergen in GB and constitute a potential risk for patients affected by LTP-syndrome. GB encodes for several LTPs with different immune reactivity.
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Affiliation(s)
- Gianni Zoccatelli
- University of Verona, Department of Biotechnology, Strada Le Grazie, 15-CV1, I-37134 Verona, Italy.
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37
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Lauer I, Dueringer N, Pokoj S, Rehm S, Zoccatelli G, Reese G, Miguel-Moncin MS, Cistero-Bahima A, Enrique E, Lidholm J, Vieths S, Scheurer S. The non-specific lipid transfer protein, Ara h 9, is an important allergen in peanut. Clin Exp Allergy 2009; 39:1427-37. [PMID: 19624524 DOI: 10.1111/j.1365-2222.2009.03312.x] [Citation(s) in RCA: 89] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND Plant food allergy in the Mediterranean area is mainly caused by non-specific lipid transfer proteins (nsLTP). The aim of this study was to characterize peanut nsLTP in comparison with peach nsLTP, Pru p 3, and assess its importance in peanut allergy. METHODS Peanut-allergic patients from Spain (n=32) were included on the basis of a positive case history and either a positive skin prick test or specific IgE to peanut. For comparison, sera of 41 peanut-allergic subjects from outside the Mediterranean area were used. Natural Ara h 9 and two isoforms of recombinant Ara h 9, expressed in Pichia pastoris, were purified using a two-step chromatographic procedure. Allergen characterization was carried out by N-terminal sequencing, circular dichroism (CD) spectroscopy, immunoblotting, IgE inhibition tests and basophil histamine release assays. RESULTS Compared with natural peanut nsLTP, the recombinant proteins could be purified in high amounts from yeast supernatant (> or =45 mg/L). The identity of the proteins was verified by N-terminal amino acid sequencing and with rabbit nsLTP-specific antibodies. CD spectroscopy revealed similar secondary structures for all preparations and Pru p 3. The Ara h 9 isoforms showed 62-68% amino acid sequence identity with Pru p 3. IgE antibody reactivity to rAra h 9 was present in 29/32 Spanish and 6/41 non-Mediterranean subjects. Recombinant Ara h 9 showed strong cross-reactivity to nPru p 3 and similar IgE-binding capacity as nAra h 9. The two Ara h 9 isoforms displayed similar IgE reactivity. In peanut-allergic patients with concomitant peach allergy, Ara h 9 showed a weaker allergenic potency than Pru p 3 in histamine release assays. CONCLUSIONS Ara h 9 is a major allergen in peanut-allergic patients from the Mediterranean area. Ara h 9 is capable of inducing histamine release from basophils, but to a lesser extent than Pru p 3.
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Affiliation(s)
- I Lauer
- Division of Allergology, Paul-Ehrlich-Institut, Langen, Germany.
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38
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Manganotti P, Formaggio E, Storti S, Avesani M, Acler M, Sala F, Magon S, Zoccatelli G, Pizzini F, Alessandrini F, Fiaschi A, Beltramello A. Steady State Activation in Primary Somatosensory Cortex after Changes in Stimulus Rate during Median Nerve Stimulation. Neuroimage 2009. [DOI: 10.1016/s1053-8119(09)70960-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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39
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Dalla Pellegrina C, Perbellini O, Scupoli MT, Tomelleri C, Zanetti C, Zoccatelli G, Fusi M, Peruffo A, Rizzi C, Chignola R. Effects of wheat germ agglutinin on human gastrointestinal epithelium: insights from an experimental model of immune/epithelial cell interaction. Toxicol Appl Pharmacol 2009; 237:146-53. [PMID: 19332085 DOI: 10.1016/j.taap.2009.03.012] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2008] [Revised: 03/02/2009] [Accepted: 03/21/2009] [Indexed: 01/22/2023]
Abstract
Wheat germ agglutinin (WGA) is a plant protein that binds specifically to sugars expressed, among many others, by human gastrointestinal epithelial and immune cells. WGA is a toxic compound and an anti-nutritional factor, but recent works have shown that it may have potential as an anti-tumor drug and as a carrier for oral drugs. To quantitate the toxicity threshold for WGA on normal epithelial cells we previously investigated the effects of the lectin on differentiated Caco2 cells, and showed that in the micromolar range of concentrations WGA could alter the integrity of the epithelium layer and increase its permeability to both mannitol and dextran. WGA was shown to be uptaken by Caco2 cells and only approximately 0.1% molecules were observed to cross the epithelium layer by transcytosis. Here we show that at nanomolar concentrations WGA is unexpectedly bioactive on immune cells. The supernatants of WGA-stimulated peripheral blood mononuclear cells (PBMC) can alter the integrity of the epithelium layer when administered to the basolateral side of differentiated Caco2 cells and the effects can be partially inhibited by monoclonal antibodies against IL1, IL6 and IL8. At nanomolar concentrations WGA stimulates the synthesis of pro-inflammatory cytokines and thus the biological activity of WGA should be reconsidered by taking into account the effects of WGA on the immune system at the gastrointestinal interface. These results shed new light onto the molecular mechanisms underlying the onset of gastrointestinal disorders observed in vivo upon dietary intake of wheat-based foods.
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Affiliation(s)
- Chiara Dalla Pellegrina
- Department of Biotechnology, University of Verona, Strada Le Grazie 15-CV1, I-37134 Verona, Italy
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40
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Pizzini FB, Tassinari G, Zoccatelli G, Magon S, Alessandrini F, Rizzo P, Beltramello A. Review of corpus callosum topography, analysis of diffusion values for the different callosal fibers and sex differences. Neuroradiol J 2009; 21:745-54. [PMID: 24257042 DOI: 10.1177/197140090802100602] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2008] [Accepted: 08/13/2008] [Indexed: 12/30/2022] Open
Abstract
Conventional MRI shows the morphology of the corpus callosum (CC), but does not reveal cortical connectivity or structural information on the CC. Here, we applied diffusion tensor imaging (DTI) in conjunction with a tract-tracing algorithm to incorporate cortical connectivity information on the CC in 40 subjects and to detect the main area and sex structural differences. CC parcellation was based on trajectories to different cortical (prefrontal, frontal motor/premotor/supplementary motor connections, parieto-occipital, temporal) and sub-cortical areas (capsular/basal ganglia connections). In agreement with recent DTI studies, we found that motor fibers occupy a much larger portion of the CC than previously believed on the basis of anatomical data. Differences in anisotropy values were instead in agreement with previous morphological evidence of smaller fibers in the anterior and posterior portions of the CC. The main sex difference was observed in anisotropy values in frontal fibers that proved to be lower in females than in males. Statistically significant differences in the regional diffusion parameters and between sexes give rise to many important questions regarding fiber organization patterns, CC microstructure and the functional relevance of these differences and provide evidence for the role of DTI, which reaches beyond the information given by morphological analysis.
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Affiliation(s)
- F B Pizzini
- Department of Neuroradiology; University Hospital; Verona, Italy -
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41
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Zoccatelli G, Dalla Pellegrina C, Consolini M, Fusi M, Sforza S, Aquino G, Dossena A, Chignola R, Peruffo A, Olivieri M, Rizzi C. Isolation and identification of two lipid transfer proteins in pomegranate (Punica granatum). J Agric Food Chem 2007; 55:11057-11062. [PMID: 18038997 DOI: 10.1021/jf072644x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Lipid transfer proteins (LTPs) are a family of low molecular mass (7-9 kDa) polypeptides, the members of which share 35-95% sequence homology. These proteins are widely distributed throughout the plant kingdom and are receiving attention for their biochemical characteristics and biological activity. LTPs are indeed studied in different research fields varying from allergy to food technology, and numerous molecules belonging to this class are progressively being identified and investigated. Proteins from pomegranate juice were fractioned by cation exchange chromatography and analyzed by SDS-PAGE. Two proteins were identified as putative LTPs on the basis of their molecular weights and their electrophoretic behaviors under reducing and nonreducing conditions. Finally, proteins were purified and characterized by mass spectrometry. This analysis confirmed that the two polypeptides are LTPs on the basis of an amino acid sequence common to LTPs from other plant sources and cysteine content. The two proteins, named LTP1a and LTP1b, showed similar molecular masses but different immunological profiles when immunodetected with rabbit antibodies specific for Pru p 3 and human IgE from a patient suffering from pomegranate allergy. The demonstration of the existence of two immunologically unrelated LTPs in pomegranate confirms the variability and the complexity of the plant LTP family. This should be taken into account when the role of these proteins as elicitors of allergies to fruits is investigated and could help to explain the contradictory literature data on pomegranate allergy.
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42
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Zoccatelli G, Dalla Pellegrina C, Mosconi S, Consolini M, Veneri G, Chignola R, Peruffo A, Rizzi C. Full-fledged proteomic analysis of bioactive wheat amylase inhibitors by a 3-D analytical technique: Identification of new heterodimeric aggregation states. Electrophoresis 2007; 28:460-6. [PMID: 17203506 DOI: 10.1002/elps.200600348] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [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: 11/07/2022]
Abstract
Wheat proteinaceous alpha-amylase inhibitors (alpha-AIs) are increasingly investigated for their agronomical role as natural defence molecules of plants against the attack of insects and pests, but also for their effects on human health. The wheat genomes code for several bioactive alpha-AIs that share sequence homology, but differ in their specificity against alpha-amylases from different species and for their aggregation states. Wheat alpha-AIs are traditionally classified as belonging to the three classes of tetrameric, homodimeric and monomeric forms, each class being constituted by a number of polypeptides that display different electrophoretic mobilities. Here we describe a proteomic approach for the identification of bioactive alpha-AIs from wheat and, in particular, a 3-D technique that allows to best identify and characterize the dimeric fraction. The technique takes advantage of the thermal resistance of alpha-AIs (resistant to T > 70 degrees C) and consists in the separation of protein mixtures by 2-D polyacrylamide/starch electrophoresis under nondissociating PAGE (ND-PAGE, first dimension) and dissociating (urea-PAGE or U-PAGE second dimension) conditions, followed by in-gel spontaneous reaggregation of protein complexes and identification of the alpha-amylase inhibitory activity (antizymogram, third dimension) using enzymes from human salivary glands and from the larvae of Tenebrio molitor coleopter (yellow mealworm). Dimeric alpha-AIs from Triticum aestivum (bread wheat) were observed to exist as heterodimers. The formation of heterodimeric complexes was also confirmed by in vitro reaggregation assays carried out on RP-HPLC purified wheat dimeric alpha-AIs, and their bioactivity assayed by antizymogram analysis. The present 3-D analytical technique can be exploited for fast, full-fledged identification and characterization of wheat alpha-AIs.
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Affiliation(s)
- Gianni Zoccatelli
- Dipartimento Scientifico e Tecnologico, Università degli Studi di Verona, Verona, Italia
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43
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Vaccino P, Corbellini M, Reffo G, Zoccatelli G, Migliardi M, Tavella L. Impact of Eurygaster maura (Heteroptera: Scutelleridae) feeding on quality of bread wheat in relation to attack period. J Econ Entomol 2006; 99:757-63. [PMID: 16813309 DOI: 10.1603/0022-0493-99.3.757] [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] [Indexed: 05/10/2023]
Abstract
Sunn pest (or cereal bug) (Heteroptera: Pentatomidae and Scutelleridae) infestations of wheat, Triticum aestivum L., in the grain filling stage have the potential to adversely affect the quality of harvested grain for bread making. In the absence of resistant wheat cultivars, producers must rely on chemical control to protect their crop from sunn pest infestations. To implement an efficient environment friendly control strategy, there is a need to pinpoint the relationships between the timing of the bug attack and gluten degradation. Recent outbreaks of Eurygaster maura (L.) in northwestern Italy have increased the local concern toward this problem. A 3-yr study was carried out by caging plants of two bread wheat cultivars, characterized by different seed texture and bread-making quality, and introducing adults of E. maura in four periods corresponding to different grain filling stages: heading, early milk-ripe, milk-ripe, and late milk-ripe. The degree of bread-making quality depletion was assessed by analytical and biochemical methods and related to the attack period. Using analysis of variance, significant differences were found in the quality traits of kernels attacked by E. maura in different grain filling stages, the maximum damage occurring with bug feeding at the late milk-ripe stage. Biochemical investigations on gluten confirmed analytical results; in grain samples infested at the late milk-ripe stage, SDS gel electrophoresis revealed the degradation of some components of the high-molecular-weight glutenins, and high-performance liquid chromatography analyses showed a breakdown of the first peak of the insoluble fraction, mainly containing polymeric proteins highly related to dough strength.
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Affiliation(s)
- Patrizia Vaccino
- Istituto Sperimentale per la Cerealicoltura, via Forlani 3, 26866 S. Angelo Lodigiano, Italy
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Crimi M, Astegno A, Zoccatelli G, Esposti MD. Pro-apoptotic effect of maize lipid transfer protein on mammalian mitochondria. Arch Biochem Biophys 2006; 445:65-71. [PMID: 16325144 DOI: 10.1016/j.abb.2005.10.024] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [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: 09/12/2005] [Revised: 10/28/2005] [Accepted: 10/29/2005] [Indexed: 11/16/2022]
Abstract
To assess the effect of lipids and lipid exchange in the pro-apoptotic release of cytochrome c, we investigated the ability of a plant lipid transfer protein (LTP) to initiate the apoptotic cascade at the mitochondrial level. The results show that maize LTP is able to induce cytochrome c release from the intermembrane space of mouse liver mitochondria without significant mitochondrial swelling, similarly to mouse full-length Bid. This effect is influenced by the presence of specific lipids, since addition of lysolipids like lysophosphatidylcholine strongly stimulates the LTP-induced release of cytochrome c while it is inhibited by removal of endogenous free lipids with a complete suppression of the LTP-induced release of cytochrome c. The results are discussed in light of the possible role of lipid exchange in apoptosis.
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Affiliation(s)
- Massimo Crimi
- Department Scientific and Technologic, Faculty of Science, University of Verona, Strada le Grazie 15, 37134 Verona, Italy.
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Dalla Pellegrina C, Rizzi C, Mosconi S, Zoccatelli G, Peruffo A, Chignola R. Plant lectins as carriers for oral drugs: Is wheat germ agglutinin a suitable candidate? Toxicol Appl Pharmacol 2005; 207:170-8. [PMID: 16102568 DOI: 10.1016/j.taap.2005.01.001] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [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: 11/03/2004] [Revised: 12/21/2004] [Accepted: 01/05/2005] [Indexed: 11/26/2022]
Abstract
Wheat germ agglutinin (WGA) is a plant protein that binds specifically to sugars expressed also by gastrointestinal epithelial cells. WGA is currently investigated as an anti-tumor drug and as a carrier for oral drugs. Information on whether it can cross the gastrointestinal epithelium and on its possible effects on the integrity of the epithelial layer is however scanty or lacking, and herein we address these issues. Differentiated Caco2 cells have been used as a model of polarized intestinal epithelium. WGA concentration at both the apical and the basolateral side of the epithelium has been quantified using a sensitive ELISA assay (sensitivity threshold 0.84 nM). Trans epithelial electrical resistance (TEER) has been measured to evaluate the integrity of the epithelium upon treatments with WGA. (3)H-Mannitol (182.2 Da) and FITC-dextran (3000 Da) have been used to measure the permeability of the epithelium. Cell viability has been measured by the MTT, by 7-AAD uptake, and Annexin-V binding assays. Up to a concentration of 5.6 microM, approximately 0.1% of intact WGA molecules only could cross the epithelial layer. WGA perturbed the integrity of the epithelium and increased the permeability of the tissue in a dose- and time-dependent manner. WGA did not induce cell death but increased the permeability of individual cells to 7-AAD which is normally not uptaken by viable cells. These data allowed us to define a toxicity threshold for WGA on epithelial cells. WGA suitability as a carrier for oral drugs can therefore be evaluated on a rational basis.
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Pellegrina CD, Padovani G, Mainente F, Zoccatelli G, Bissoli G, Mosconi S, Veneri G, Peruffo A, Andrighetto G, Rizzi C, Chignola R. Anti-tumour potential of a gallic acid-containing phenolic fraction from Oenothera biennis. Cancer Lett 2005; 226:17-25. [PMID: 16004929 DOI: 10.1016/j.canlet.2004.11.033] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.3] [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: 09/07/2004] [Revised: 11/14/2004] [Accepted: 11/16/2004] [Indexed: 11/18/2022]
Abstract
A phenolic fraction purified form defatted seeds of Oenothera biennis promoted selective apoptosis of human and mouse bone marrow-derived cell lines following first-order kinetics through a caspase-dependent pathway. In non-leukemia tumour cell lines, such as human colon carcinoma CaCo(2) cells and mouse fibrosarcoma WEHI164 cells, this fraction inhibited (3)H-thymidine incorporation but not cell death or cell cycle arrest. Human peripheral blood mononuclear cells showed low sensitivity to treatment. Single bolus injection of the phenolic fraction could delay the growth of established myeloma tumours in syngeneic animals. HPLC and mass spectrometry analysis revealed that the fraction contains gallic acid. However, the biological activity of the fraction differs from the activity of this phenol and hence it should be attributed to other co-purified molecules which remain still unidentified.
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Affiliation(s)
- Chiara Dalla Pellegrina
- Dipartimento Scientifico e Tecnologico, Facolta' di Scienze MM.FF.NN., Universita' di Verona, Strada Le Grazie, 15 CV-1, I-37134 Verona, Italia
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Dalla Pellegrina C, Matucci A, Zoccatelli G, Rizzi C, Vincenzi S, Veneri G, Andrighetto G, Peruffo ADB, Chignola R. Studies on the joint cytotoxicity of Wheat Germ Agglutinin and monensin. Toxicol In Vitro 2004; 18:821-7. [PMID: 15465648 DOI: 10.1016/j.tiv.2004.04.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [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: 07/20/2003] [Accepted: 04/20/2004] [Indexed: 02/05/2023]
Abstract
Wheat Germ Agglutinin (WGA) cytotoxicity has been studied using two human leukemia cell lines, Molt3 and K562, and human peripheral blood mononuclear cells (PBMC). In spite of similar binding at the cell surface, WGA was found to promote cell death to a different extent in Molt3, K562 and PBMC and to induce different death events leading to apoptosis in Molt3 and either apoptosis and necrosis in K562 cells and PBMC. In Molt3 but not in K562 cells, WGA cytotoxicity could be potentiated 66-200 fold by 50 nM monensin, a carboxylic ionophore that perturbs the intracellular trafficking of endocytosed molecules. Synergism between the cytotoxic activities of WGA and monensin was demonstrated in Molt3 cells by comparing non toxic, or slightly toxic, doses of WGA and monensin alone or in combination. These results show that the cytotoxic effect of WGA is dependent on internalisation events which may differ among the cell lines used. WGA and monensin can enter the human diet being a component of wheat germ and an antibiotic used for zootechnic reasons in the bioindustry, respectively. These data reveal the synergistic effect between two dietary molecules, otherwise per se toxic at much higher concentrations, with possible implications for human and animal health.
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Affiliation(s)
- Chiara Dalla Pellegrina
- Dipartimento Scientifico e Tecnologico, Universita' di Verona, Strada Le Grazie, 15, 37134 Verona, Italy
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Guerriero C, Zoccatelli G, Stefani E, Sartoris S, Cestari T, Riviera AP, Tridente G, Andrighetto G, Chignola R. Myelin basic protein epitopes secreted by human T cells encounter natural autoantibodies in the serum. J Neuroimmunol 2003; 141:83-9. [PMID: 12965257 DOI: 10.1016/s0165-5728(03)00226-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [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: 11/25/2022]
Abstract
A previously isolated and characterized IgM monoclonal antibody (mAb 1H6.2) specific to myelin basic protein (MBP) and to MBP epitopes expressed by nonneural cells was used to immunoprecipitate and investigate the expression of MBP epitopes by human T cells. Peripheral T lymphocytes secreted MBP epitopes, and secretion increased in time after mitogen stimulation. Conversely, thymocytes secreted these proteins independently on mitogen stimulation. Specific antibody reactivity (primarily due to IgG3) towards immunoprecipitated MBP epitopes was found in all tested sera from healthy donors and from multiple sclerosis patients as well as in sera from normal human cord blood. Collectively, these data provide insights into the immunological mechanisms leading to central and peripheral tolerance to MBP products.
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Affiliation(s)
- Chiara Guerriero
- Dipartimento di Patologia, Università di Verona, c/o Policlinico G.B. Rossi, I-37134 Verona, Italy
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Antico A, Zoccatelli G, Marcotulli C, Curioni A. Oral allergy syndrome to fig. Int Arch Allergy Immunol 2003; 131:138-42. [PMID: 12811022 DOI: 10.1159/000070929] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [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: 10/05/2002] [Accepted: 02/24/2003] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND The few cases of food allergy to fig reported to date, whose main manifestations were anaphylactic reactions, have been related to a cross-sensitisation to weeping fig (Ficus benjamina) or to the 'latex-fruit syndrome'. Here we report on two cases of the oral allergy syndrome (OAS) to fig in patients whose main allergic manifestations were related to sensitisation to grass and birch pollens. METHODS The patients were characterised by clinical history, skin prick tests (SPT) with commercial and in-house extracts, prick-by-prick test, specific IgE measurements and challenge tests. PBS-soluble and insoluble extracts of both fig skin and pulp were examined for the presence of potential allergens by IgE immunoblotting. RESULTS Both patients showed OAS followed by respiratory symptoms when challenged with fig. They were negative in both specific IgE detection and SPT with commercial extracts of fig and many other plant materials, including F. benjamina and Hevea Brasiliensis, while grass and birch pollens gave positive results. Prick-by-prick tests and SPT with in-house extracts indicated that the fig skin had a much higher allergenicity than the pulp. Despite negative IgE detection by the CAP assay, immunoblotting experiments showed that potential fig allergens were PBS-soluble and present only in the skin of the fruit. CONCLUSIONS OAS to fig followed by respiratory symptoms can be present in patients not sensitised to weeping fig or having the latex-fruit syndrome. Different parts of the fig can have different allergenicities, the most important allergens being proteins related to the skin of the fruit. Improved commercial fig extracts to be used for the diagnosis of this type of allergy have to be developed.
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Affiliation(s)
- A Antico
- Azienda Istituti Ospedalieri C. Poma--Mantova, Servizio Autonomo di Allergologia, Ospedale di Asola, Mantova, Italia
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Rizzi C, Galeoto L, Zoccatelli G, Vincenzi S, Chignola R, Peruffo AD. Active soybean lectin in foods: quantitative determination by ELISA using immobilised asialofetuin. Food Res Int 2003. [DOI: 10.1016/s0963-9969(03)00076-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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