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    Multi-walled carbon nanotube instillation impairs pulmonary function in C57BL/6 mice

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    Author
    Wang, Xiaojia; Katwa, Pranita; Podila, Ramakrishna; Chen, Pengyu; Chun Ke, Pu; Rao, Apparao M; Walters, Dianne M; Wingard, Christopher J; Brown, Jared
    Abstract
    Multi-walled carbon nanotubes (MWCNTs) are widely used in many disciplines due to their unique physical and chemical properties. Therefore, some concerns about the possible human health and environmental impacts of manufactured MWCNTs are rising. We hypothesized that instillation of MWCNTs impairs pulmonary function in C57BL/6 mice due to development of lung inflammation and fibrosis. MWCNTs were administered to C57BL/6 mice by oropharyngeal aspiration (1, 2, and 4 mg/kg) and we assessed lung inflammation and fibrosis by inflammatory cell infiltration, collagen content, and histological assessment. Pulmonary function was assessed using a FlexiVent system and levels of Ccl3, Ccl11, Mmp13 and IL-33 were measured by RT-PCR and ELISA. Mice administered MWCNTs exhibited increased inflammatory cell infiltration, collagen deposition and granuloma formation in lung tissue, which correlated with impaired pulmonary function as assessed by increased resistance, tissue damping, and decreased lung compliance. Pulmonary exposure to MWCNTs induced an inflammatory signature marked by cytokine (IL-33), chemokine (Ccl3 and Ccl11), and protease production (Mmp13) that promoted the inflammatory and fibrotic changes observed within the lung. These results further highlight the potential adverse health effects that may occur following MWCNT exposure and therefore we suggest these materials may pose a significant risk leading to impaired lung function following environmental and occupational exposures.
    URI
    http://hdl.handle.net/10342/7742
    Date
    2011-08-18
    Citation:
    APA:
    Wang, Xiaojia, & Katwa, Pranita, & Podila, Ramakrishna, & Chen, Pengyu, & Chun Ke, Pu, & Rao, Apparao M, & Walters, Dianne M, & Wingard, Christopher J, & Brown, Jared. (August 2011). Multi-walled carbon nanotube instillation impairs pulmonary function in C57BL/6 mice. , (), - . Retrieved from http://hdl.handle.net/10342/7742

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    MLA:
    Wang, Xiaojia, and Katwa, Pranita, and Podila, Ramakrishna, and Chen, Pengyu, and Chun Ke, Pu, and Rao, Apparao M, and Walters, Dianne M, and Wingard, Christopher J, and Brown, Jared. "Multi-walled carbon nanotube instillation impairs pulmonary function in C57BL/6 mice". . . (), August 2011. October 01, 2023. http://hdl.handle.net/10342/7742.
    Chicago:
    Wang, Xiaojia and Katwa, Pranita and Podila, Ramakrishna and Chen, Pengyu and Chun Ke, Pu and Rao, Apparao M and Walters, Dianne M and Wingard, Christopher J and Brown, Jared, "Multi-walled carbon nanotube instillation impairs pulmonary function in C57BL/6 mice," , no. (August 2011), http://hdl.handle.net/10342/7742 (accessed October 01, 2023).
    AMA:
    Wang, Xiaojia, Katwa, Pranita, Podila, Ramakrishna, Chen, Pengyu, Chun Ke, Pu, Rao, Apparao M, Walters, Dianne M, Wingard, Christopher J, Brown, Jared. Multi-walled carbon nanotube instillation impairs pulmonary function in C57BL/6 mice. . August 2011; (): . http://hdl.handle.net/10342/7742. Accessed October 01, 2023.
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