Influence ofPhleum pratensepollen grains rupture on lipids extraction

Farah, Jinane; Choël, Marie; De Nadai, Patricia; Balsamelli, Joanne; Gosselin, Sylvie; Visez, Nicolas

Document type :

Article dans une revue scientifique: Article original

DOI :

10.1007/s10453-020-09660-w

Permalink :

http://hdl.handle.net/20.500.12210/109607

Title :

Influence ofPhleum pratensepollen grains rupture on lipids extraction

Author(s) :

Farah, Jinane [Auteur]
Faculty of Public Health [Lebanese University] [FSP III]
Physicochimie des Processus de Combustion et de l’Atmosphère - UMR 8522 [PC2A]
Choël, Marie [Auteur]

Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516
De Nadai, Patricia [Auteur]

Centre d'Infection et d'Immunité de Lille (CIIL) - U1019 - UMR 9017
Balsamelli, Joanne [Auteur]
Centre d’Infection et d’Immunité de Lille - INSERM U 1019 - UMR 9017 - UMR 8204 [CIIL]
Gosselin, Sylvie [Auteur]

Physicochimie des Processus de Combustion et de l’Atmosphère - UMR 8522 [PC2A]
Visez, Nicolas [Auteur]

Physicochimie des Processus de Combustion et de l’Atmosphère - UMR 8522 [PC2A]

Journal title :

Aerobiologia

Abbreviated title :

Aerobiologia

Volume number :

Publication date :

2020-11-11

ISSN :

0393-5965

English keyword(s) :

Cytoplasmic granules
Allergenic pollen
Timothy grass
Lipidomic
Pollen allergy

HAL domain(s) :

Chimie

English abstract : [en]

In this work, we completed the first identification and quantification of internal lipids for allergenic Phleum pratense pollen grains (PGs). We have extracted PGs with aqueous solvent under different extraction procedures ...
Show more >In this work, we completed the first identification and quantification of internal lipids for allergenic Phleum pratense pollen grains (PGs). We have extracted PGs with aqueous solvent under different extraction procedures and observed release of extra amount of unsaturated fatty acids (α-linolenic and linoleic acids) when PGs were broken during extraction. We showed that rupture of PGs is necessary for the release of higher quantity of bioactive compounds. Organic solvent extraction of crushed PGs confirmed the predominance of unsaturated fatty acids in the inner parts of PGs as well as a different distribution of external and internal lipids. The total mass of extractible matter by organic solvent was determined at 22 ± 1 mg g−1 for intact pollen and at 48 ± 1 mg g−1 for broken pollen. This finding brings new insight into the physical degradation of PGs by air pollutants during atmospheric transport. We hypothesize that the presence of bioactive lipids in pollen cytoplasm gives further importance to asthma triggered by cracked or broken allergenic PGs. The rupturing of PGs in the atmosphere may expose the population to the risk of inhaling micrometer-sized aerosols (cytoplasmic granules) containing not only allergens but also bioactive lipids.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS

Collections :

Submission date :

2024-02-28T23:25:09Z
2024-03-12T15:56:51Z

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2	20.500.12210/109607*	2024-03-12T15:52:20Z
1	20.500.12210/109607.1	2024-02-28T23:25:09Z

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Influence ofPhleum pratensepollen grains ...

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