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Metadata Updated: November 12, 2020

The prevalence of a sedentary (SED) life style combined with calorically rich diets has spurred the rise in childhood obesity which, in turn, translates to adverse health effects in adulthood. Obesity and lack of active (ACT) lifestyle may increase susceptibility to air pollutants. We housed 22 day-old female Long-Evans rats in a cage without (SED) or with a running wheel (ACT). After 10 weeks the rats ran 310 ± 16.3 km (SEM). Responses of SED and ACT rats to whole-body O3 (0, 0.25, 0.5, or 1.0 ppm; 5 hr/day for 2 days) was assessed. Glucose tolerance (GTT) was performed following the first day of O3. ACT rats had less body fat and an improved glucose tolerance (GTT). Ventilatory function (plethysmography) of SED and ACT groups was similarly impaired by O3. Bronchoalveolar lavage fluid (BALF) was collected after the second O3 exposure. SED and ACT rats were hyperglycemic following 1.0 ppm O3. GTT was impaired by O3 in both groups; however, ACT rats exhibited improved recovery to 0.25 and 1.0 ppm O3. BALF cell neutrophils and total cells were similarly increased in ACT and SED groups exposed to 1.0 ppm O3. O3-induced increase in eosinophils was exacerbated in SED rats. Chronic exercise from post-weaning to adulthood improved some of the metabolic and pulmonary responses to O3 (GTT and eosinophils) but several other parameters were unaffected. The reduction in O3-induced rise in BALF eosinophils in ACT rats suggests a possible link between a SED lifestyle and incidence of asthma-related symptoms from O3.  .

This dataset is associated with the following publication: Gordon, C., P. Phillips, A. Ledbetter, S. Snow, M. Schladweiler, A. Johnstone, and U. Kodavanti. ACTIVE VS. SEDENTARY LIFESTYLE FROM WEANING TO ADULTHOOD AND SUSCEPTIBILITY TO OZONE IN RATS. INHALATION TOXICOLOGY. Informa Healthcare USA, New York, NY, USA, L100-L109, (2017).

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Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020

Metadata Source

Harvested from EPA ScienceHub

Additional Metadata

Resource Type Dataset
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Publisher U.S. EPA Office of Research and Development (ORD)
Data Last Modified 2016-10-25
Public Access Level public
Bureau Code 020:00
Schema Version
Harvest Object Id 1eed9d0f-ea65-4880-bd76-dade17897a12
Harvest Source Id 04b59eaf-ae53-4066-93db-80f2ed0df446
Harvest Source Title EPA ScienceHub
Program Code 020:000
Publisher Hierarchy U.S. Government > U.S. Environmental Protection Agency > U.S. EPA Office of Research and Development (ORD)
Related Documents
Source Datajson Identifier True
Source Hash f719ff7d675026676d644429a1267ac4623eaffe
Source Schema Version 1.1

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