Subchronic exposure to 1,2-naphthoquinone induces adipose tissue inflammation and changes the energy homeostasis of mice, partially due to TNFR1 and TLR4

Ferreira, Clílton Kraüss de Oliveira; Campolim, Clara Machado; Zordão, Olívia Pizetta; Simabuco, Fernando Moreira; Anaruma, Chadi Pellegrini; Pereira, Rodrigo Fernando; Boico, Vitor Ferreira; Salvino, Luiz Guilherme; Costa, Maricília Silva; Ruiz, Nathalia Quintero; Moura, Leandro Pereira de; Saad, Mário José Abdalla; Costa, Soraia K.P.; Kim, Young–Bum; Prada, Patrícia O.

doi:10.1016/j.toxrep.2023.06.002

Cited by 1 publication

(1 citation statement)

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“…We found that this occurs through a mechanism dependent on the upregulation of co-stimulatory molecules, leading to amplified cell presentation, Th2 polarization, and enhanced levels of LTB4, humoral response, and Th1/Th2 cytokines [49]. More recently, we have shown that sub-chronic neonatal mouse exposure to 1,2-NQ increases adipose tissue inflammation, paralleled by disrupting energy homeostasis, partially mediated by TNFR1 and TLR4-mediated mechanisms [50].…”

Section: Introductionmentioning

confidence: 82%

Disruption of Atrial Rhythmicity by the Air Pollutant 1,2-Naphthoquinone: Role of Beta-Adrenergic and Sensory Receptors

Soares,

Teixeira,

Thakore

et al. 2023

Biomolecules

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The combustion of fossil fuels contributes to air pollution (AP), which was linked to about 8.79 million global deaths in 2018, mainly due to respiratory and cardiovascular-related effects. Among these, particulate air pollution (PM2.5) stands out as a major risk factor for heart health, especially during vulnerable phases. Our prior study showed that premature exposure to 1,2-naphthoquinone (1,2-NQ), a chemical found in diesel exhaust particles (DEP), exacerbated asthma in adulthood. Moreover, increased concentration of 1,2-NQ contributed to airway inflammation triggered by PM2.5, employing neurogenic pathways related to the up-regulation of transient receptor potential vanilloid 1 (TRPV1). However, the potential impact of early-life exposure to 1,2-naphthoquinone (1,2-NQ) on atrial fibrillation (AF) has not yet been investigated. This study aims to investigate how inhaling 1,2-NQ in early life affects the autonomic adrenergic system and the role played by TRPV1 in these heart disturbances. C57Bl/6 neonate male mice were exposed to 1,2-NQ (100 nM) or its vehicle at 6, 8, and 10 days of life. Early exposure to 1,2-NQ impairs adrenergic responses in the right atria without markedly affecting cholinergic responses. ECG analysis revealed altered rhythmicity in young mice, suggesting increased sympathetic nervous system activity. Furthermore, 1,2-NQ affected β1-adrenergic receptor agonist-mediated positive chronotropism, which was prevented by metoprolol, a β1 receptor blocker. Capsazepine, a TRPV1 blocker but not a TRPC5 blocker, reversed 1,2-NQ-induced cardiac changes. In conclusion, neonate mice exposure to AP 1,2-NQ results in an elevated risk of developing cardiac adrenergic dysfunction, potentially leading to atrial arrhythmia at a young age.

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Section: Introductionmentioning

confidence: 82%