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Gender differences in murine pulmonary responses elicited by cellulose nanocrystals

Shvedova, AA and Kisin, ER and Yanamala, N and Farcas, MT and Menas, AL and Williams, A and Fournier, PM and Reynolds, JS and Gutkin, DW and Star, A and Reiner, RS and Halappanavar, S and Kagan, VE (2016) Gender differences in murine pulmonary responses elicited by cellulose nanocrystals. Particle and Fibre Toxicology, 13 (1).

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Background: Cellulose-based materials have been used for centuries to manufacture different goods derived from forestry and agricultural sources. In the growing field of nanocellulose applications, its uniquely engineered properties are instrumental for inventive products coming to competitive markets. Due to their high aspect ratio and stiffness, it is speculated that cellulose nanocrystals (CNC) may cause similar pulmonary toxicity as carbon nanotubes and asbestos, thus posing a potential negative impact on public health and the environment. Methods: The present study was undertaken to investigate the pulmonary outcomes induced by repeated exposure to respirable CNC. C57BL/6 female and male mice were exposed by pharyngeal aspiration to CNC (40 μg/mouse) 2 times a week for 3 weeks. Several biochemical endpoints and pathophysiological outcomes along with gene expression changes were evaluated and compared in the lungs of male and female mice. Results: Exposure to respirable CNC caused pulmonary inflammation and damage, induced oxidative stress, elevated TGF-β and collagen levels in lung, and impaired pulmonary functions. Notably, these effects were markedly more pronounced in females compared to male mice. Moreover, sex differences in responses to pulmonary exposure to CNC were also detected at the level of global mRNA expression as well as in inflammatory cytokine/chemokine activity. Conclusions: Overall, our results indicate that there are considerable differences in responses to respirable CNC based on gender with a higher pulmonary toxicity observed in female mice.


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Item Type: Article
Status: Published
CreatorsEmailPitt UsernameORCID
Shvedova, AA
Kisin, ER
Yanamala, N
Farcas, MT
Menas, AL
Williams, A
Fournier, PMpmf17@pitt.eduPMF17
Reynolds, JS
Gutkin, DWdig4@pitt.eduDIG4
Star, Aastar@pitt.eduASTAR
Reiner, RS
Halappanavar, S
Kagan, VEkagan@pitt.eduKAGAN
Date: 8 June 2016
Date Type: Publication
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Journal or Publication Title: Particle and Fibre Toxicology
Volume: 13
Number: 1
DOI or Unique Handle: 10.1186/s12989-016-0140-x
Institution: University of Pittsburgh
Schools and Programs: Dietrich School of Arts and Sciences > Chemistry
School of Public Health > Environmental and Occupational Health
School of Medicine > Pathology
Refereed: Yes
Date Deposited: 25 Jul 2016 13:48
Last Modified: 30 Mar 2021 11:55


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