2021
DOI: 10.1038/s41598-021-85153-1
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Acute and chronic effects of Titanium dioxide (TiO2) PM1 on honey bee gut microbiota under laboratory conditions

Abstract: Apis mellifera is an important provider of ecosystem services, and during flight and foraging behaviour is exposed to environmental pollutants including airborne particulate matter (PM). While exposure to insecticides, antibiotics, and herbicides may compromise bee health through alterations of the gut microbial community, no data are available on the impacts of PM on the bee microbiota. Here we tested the effects of ultrapure Titanium dioxide (TiO2) submicrometric PM (i.e., PM1, less than 1 µm in diameter) on… Show more

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Cited by 16 publications
(13 citation statements)
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“…For instance, nitrates/nitrites 24 26 , carrageenans 31 , glutamate 32 34 , bixin 35 , 36 , artificial sweeteners 21 , 37 40 , phosphates 41 , 42 , emulsifiers 43 46 , caramel 47 , tartrazine 48 , 49 and butylated hydroxyanisole/ butylated hydroxytoluene (BHA/BHT) 48 were previously linked to metabolic, gut microbiota or endocrine perturbations along with carcinogenic, inflammatory and/or oxidative stress effects. Also, in May 2021, following an updated evaluation, EFSA reviewed its position on titanium dioxide (TiO 2 ) and stated that this additive could no longer be considered as safe 22 , 50 52 . Besides, some experimental results suggest potential interactions between some food additives and/or with the food matrix leading to synergistic or antagonist effects on health 4, yet profiles of exposure to additive mixtures in humans are poorly documented.…”
Section: Introductionmentioning
confidence: 99%
“…For instance, nitrates/nitrites 24 26 , carrageenans 31 , glutamate 32 34 , bixin 35 , 36 , artificial sweeteners 21 , 37 40 , phosphates 41 , 42 , emulsifiers 43 46 , caramel 47 , tartrazine 48 , 49 and butylated hydroxyanisole/ butylated hydroxytoluene (BHA/BHT) 48 were previously linked to metabolic, gut microbiota or endocrine perturbations along with carcinogenic, inflammatory and/or oxidative stress effects. Also, in May 2021, following an updated evaluation, EFSA reviewed its position on titanium dioxide (TiO 2 ) and stated that this additive could no longer be considered as safe 22 , 50 52 . Besides, some experimental results suggest potential interactions between some food additives and/or with the food matrix leading to synergistic or antagonist effects on health 4, yet profiles of exposure to additive mixtures in humans are poorly documented.…”
Section: Introductionmentioning
confidence: 99%
“…Current studies on the oral exposure of pollinators to particles indicate both lethal and sub-lethal effects [ 101 , 102 ]. In particular, cytological and histological modifications of the gut epithelium or alterations in the gut microbial community have been demonstrated [ 103 , 104 , 105 ]. Indeed, ingested particles can come into contact with epithelial cells and the microbiome lining the gut, posing hazards to the gut community [ 105 ].…”
Section: Airborne Particulate Matter (Pm) and Characteristics And Eff...mentioning
confidence: 99%
“…The most recent work was published by Papa et al [ 216 ] and studied the acute and chronic effects of titanium dioxide (TiO 2 ) particulate matter on honeybee gut microbiota under laboratory conditions. Acute and chronic oral administration of ultrapure TiO 2 particulate matter to adult bees altered the bee microbial community; therefore, airborne particulate matter may represent an additional risk factor for honeybee health, promoting sublethal effects against the gut microbiota [ 216 ].…”
Section: Nutritional Value Bioactive Components and Beneficial Properties Of Bee Productsmentioning
confidence: 99%
“…The most recent work was published by Papa et al [ 216 ] and studied the acute and chronic effects of titanium dioxide (TiO 2 ) particulate matter on honeybee gut microbiota under laboratory conditions. Acute and chronic oral administration of ultrapure TiO 2 particulate matter to adult bees altered the bee microbial community; therefore, airborne particulate matter may represent an additional risk factor for honeybee health, promoting sublethal effects against the gut microbiota [ 216 ]. The second most recent paper was a work by Sharif et al [ 217 ] that, by looking for new, non-invasive methods to monitor the health status of the colony, introduced new features for classifying beehive audio samples using the soundscape indices [ 217 ].…”
Section: Nutritional Value Bioactive Components and Beneficial Properties Of Bee Productsmentioning
confidence: 99%