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Kilian JG, Mejias-Ortega M, Hsu HW, Herman DA, Vidal J, Arechavala RJ, Renusch S, Dalal H, Hasen I, Ting A, Rodriguez-Ortiz CJ, Lim SL, Lin X, Vu J, Saito T, Saido TC, Kleinman MT, Kitazawa M. Exposure to quasi-ultrafine particulate matter accelerates memory impairment and Alzheimer's disease-like neuropathology in the AppNL-G-F knock-in mouse model. Toxicol Sci 2023; 193:175-191. [PMID: 37074955 PMCID: PMC10230292 DOI: 10.1093/toxsci/kfad036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2023] Open
Abstract
Exposure to traffic-related air pollution consisting of particulate matter (PM) is associated with cognitive decline leading to Alzheimer's disease (AD). In this study, we sought to examine the neurotoxic effects of exposure to ultrafine PM and how it exacerbates neuronal loss and AD-like neuropathology in wildtype (WT) mice and a knock-in mouse model of AD (AppNL-G-F/+-KI) when the exposure occurs at a prepathologic stage or at a later age with the presence of neuropathology. AppNL-G-F/+-KI and WT mice were exposed to concentrated ultrafine PM from local ambient air in Irvine, California, for 12 weeks, starting at 3 or 9 months of age. Particulate matter-exposed animals received concentrated ultrafine PM up to 8 times above the ambient levels, whereas control animals were exposed to purified air. Particulate matter exposure resulted in a marked impairment of memory tasks in prepathologic AppNL-G-F/+-KI mice without measurable changes in amyloid-β pathology, synaptic degeneration, and neuroinflammation. At aged, both WT and AppNL-G-F/+-KI mice exposed to PM showed a significant memory impairment along with neuronal loss. In AppNL-G-F/+-KI mice, we also detected an increased amyloid-β buildup and potentially harmful glial activation including ferritin-positive microglia and C3-positive astrocytes. Such glial activation could promote the cascade of degenerative consequences in the brain. Our results suggest that exposure to PM impairs cognitive function at both ages while exacerbation of AD-related pathology and neuronal loss may depend on the stage of pathology, aging, and/or state of glial activation. Further studies will be required to unveil the neurotoxic role of glial activation activated by PM exposure.
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Affiliation(s)
- Jason G Kilian
- Department of Environmental and Occupational Health, Center for Occupational and Environmental Health (COEH), University of California, Irvine, California 92697-1830, USA
- Institute for Memory Impairmants and Neurological Disorders (UCI MIND), University of California, Irvine, California 92697, USA
| | - Marina Mejias-Ortega
- Department of Environmental and Occupational Health, Center for Occupational and Environmental Health (COEH), University of California, Irvine, California 92697-1830, USA
- Department of Cell Biology, Genetics and Physiology, Facultad de Ciencias, Instituto de Investigacion Biomedica de Malaga-IBIMA, Universidad de Malaga, Malaga, Spain
- Centro de Investigación Biomedica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Heng-Wei Hsu
- Department of Environmental and Occupational Health, Center for Occupational and Environmental Health (COEH), University of California, Irvine, California 92697-1830, USA
- Institute for Memory Impairmants and Neurological Disorders (UCI MIND), University of California, Irvine, California 92697, USA
| | - David A Herman
- Department of Environmental and Occupational Health, Center for Occupational and Environmental Health (COEH), University of California, Irvine, California 92697-1830, USA
| | - Janielle Vidal
- Department of Environmental and Occupational Health, Center for Occupational and Environmental Health (COEH), University of California, Irvine, California 92697-1830, USA
- Institute for Memory Impairmants and Neurological Disorders (UCI MIND), University of California, Irvine, California 92697, USA
| | - Rebecca J Arechavala
- Department of Environmental and Occupational Health, Center for Occupational and Environmental Health (COEH), University of California, Irvine, California 92697-1830, USA
| | - Samantha Renusch
- Department of Environmental and Occupational Health, Center for Occupational and Environmental Health (COEH), University of California, Irvine, California 92697-1830, USA
| | - Hansal Dalal
- Department of Environmental and Occupational Health, Center for Occupational and Environmental Health (COEH), University of California, Irvine, California 92697-1830, USA
| | - Irene Hasen
- Department of Environmental and Occupational Health, Center for Occupational and Environmental Health (COEH), University of California, Irvine, California 92697-1830, USA
| | - Amanda Ting
- Department of Environmental and Occupational Health, Center for Occupational and Environmental Health (COEH), University of California, Irvine, California 92697-1830, USA
| | - Carlos J Rodriguez-Ortiz
- Department of Environmental and Occupational Health, Center for Occupational and Environmental Health (COEH), University of California, Irvine, California 92697-1830, USA
- Institute for Memory Impairmants and Neurological Disorders (UCI MIND), University of California, Irvine, California 92697, USA
| | - Siok-Lam Lim
- Department of Environmental and Occupational Health, Center for Occupational and Environmental Health (COEH), University of California, Irvine, California 92697-1830, USA
- Institute for Memory Impairmants and Neurological Disorders (UCI MIND), University of California, Irvine, California 92697, USA
| | - Xiaomeng Lin
- Department of Environmental and Occupational Health, Center for Occupational and Environmental Health (COEH), University of California, Irvine, California 92697-1830, USA
| | - Joan Vu
- Department of Environmental and Occupational Health, Center for Occupational and Environmental Health (COEH), University of California, Irvine, California 92697-1830, USA
- Institute for Memory Impairmants and Neurological Disorders (UCI MIND), University of California, Irvine, California 92697, USA
| | - Takashi Saito
- Department of Neurocognitive Science, Institute of Brain Science, Nagoya City University, Nagoya, Japan
| | - Takaomi C Saido
- Laboratory for Proteolytic Neuroscience, RIKEN Center for Brain Science, Wako, Japan
| | - Michael T Kleinman
- Department of Environmental and Occupational Health, Center for Occupational and Environmental Health (COEH), University of California, Irvine, California 92697-1830, USA
| | - Masashi Kitazawa
- Department of Environmental and Occupational Health, Center for Occupational and Environmental Health (COEH), University of California, Irvine, California 92697-1830, USA
- Institute for Memory Impairmants and Neurological Disorders (UCI MIND), University of California, Irvine, California 92697, USA
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Jiménez-Chávez A, Morales-Rubio R, Sánchez-Gasca E, Rivera-Rosas M, Uribe-Ramírez M, Amador-Muñoz O, Martínez-Domínguez YM, Rosas-Pérez I, Choy EH, Herman DA, Kleinman MT, De Vizcaya-Ruiz A. Subchronic co-exposure to particulate matter and fructose-rich-diet induces insulin resistance in male Sprague Dawley rats. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2023; 100:104115. [PMID: 37075874 DOI: 10.1016/j.etap.2023.104115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 03/19/2023] [Accepted: 03/29/2023] [Indexed: 05/03/2023]
Abstract
Insulin resistance (IR) and metabolic disorders are non-pulmonary adverse effects induced by fine particulate matter (PM2.5) exposure. The worldwide pandemic of high fructose sweeteners and fat rich modern diets, also contribute to IR development. We investigated some of the underlying effects of IR, altered biochemical insulin action and Insulin/AKT pathway biomarkers. Male Sprague Dawley rats were subchronically exposed to filtered air, PM2.5, a fructose rich diet (FRD), or PM2.5 + FRD. Exposure to PM2.5 or FRD alone did not induce metabolic changes. However, PM2.5 + FRD induced leptin release, systemic hyperinsulinemia, and Insulin/AKT dysregulation in insulin-sensitive tissues preceded by altered AT1R levels. Histological damage and increased HOMA-IR were also observed from PM2.5 + FRD co-exposure. Our results indicate that the concomitant exposure to a ubiquitous environmental pollutant, such as PM2.5, and a metabolic disease risk factor, a FRD, can contribute to the metabolic disorder pandemic occurring in highly polluted locations.
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Affiliation(s)
- Arturo Jiménez-Chávez
- Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados del IPN (CINVESTAV-IPN), Ciudad de México, México
| | - Russell Morales-Rubio
- Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados del IPN (CINVESTAV-IPN), Ciudad de México, México
| | - Eliu Sánchez-Gasca
- Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados del IPN (CINVESTAV-IPN), Ciudad de México, México
| | - Mónica Rivera-Rosas
- Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados del IPN (CINVESTAV-IPN), Ciudad de México, México
| | - Marisela Uribe-Ramírez
- Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados del IPN (CINVESTAV-IPN), Ciudad de México, México
| | - Omar Amador-Muñoz
- Instituto de Ciencias de la Atmósfera y Cambio Climático, Universidad Nacional Autónoma de México, Ciudad Universitaria, Ciudad de México, México
| | - Y Margarita Martínez-Domínguez
- Instituto de Ciencias de la Atmósfera y Cambio Climático, Universidad Nacional Autónoma de México, Ciudad Universitaria, Ciudad de México, México
| | - Irma Rosas-Pérez
- Instituto de Ciencias de la Atmósfera y Cambio Climático, Universidad Nacional Autónoma de México, Ciudad Universitaria, Ciudad de México, México
| | - Elizabeth H Choy
- Department of Environmental and Occupational Health, Program in Public Health, Susan and Henry Samueli College of Health Sciences, University of California Irvine, Irvine, CA, USA
| | - David A Herman
- Department of Environmental and Occupational Health, Program in Public Health, Susan and Henry Samueli College of Health Sciences, University of California Irvine, Irvine, CA, USA
| | - Michael T Kleinman
- Department of Environmental and Occupational Health, Program in Public Health, Susan and Henry Samueli College of Health Sciences, University of California Irvine, Irvine, CA, USA
| | - Andrea De Vizcaya-Ruiz
- Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados del IPN (CINVESTAV-IPN), Ciudad de México, México; Department of Environmental and Occupational Health, Program in Public Health, Susan and Henry Samueli College of Health Sciences, University of California Irvine, Irvine, CA, USA.
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Mehmood T, Ahmad I, Bibi S, Mustafa B, Ali I. Insight into monsoon for shaping the air quality of Islamabad, Pakistan: Comparing the magnitude of health risk associated with PM 10 and PM 2.5 exposure. JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION (1995) 2020; 70:1340-1355. [PMID: 32841106 DOI: 10.1080/10962247.2020.1813838] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Monsoon plays a determinant role in defining the air quality of many Asian countries. Filter-based 24 h ambient PM10 and PM2.5 sampling was performed by using two paralleled medium volume air samplers during pre-and post-monsoon periods. A negligible change in PM2.5 mass concentration from 45.77 to 44.46 µg/m3 compared to PM10 from 74.34 to 142.49 µg/m3 was observed after the monsoon season. The air quality index (AQI) results showed that the air quality of the city retained from good to slightly polluted in both periods, where PM2.5 remained as the main detrimental to air quality in 95% of the total days. The NOAA HYSPLIT model analysis and wind rose patterns showed air trajectories, especially in post-monsoon originated from relatively polluted areas transported higher PM10. Meteorological attributes indicated a more conducive atmospheric condition for secondary pollution in the pre-monsoon. Evidence showed post-monsoon as a more polluted period, compared to the pre-monsoon and would pose an extra 1.07 × 10-3 lifetime risk to the local population. Similarly, a higher level of PM10 in the post-monsoon caused 43% more premature mortality and 41% more deaths from all-cause mortality compare to the pre-monsoon period, respectively. Implications: Pakistan is an under-developing country where pollution monitoring studies are decidedly limited. Notably, studies, concise PM2.5 and health assessment are deficient. The present study may contribute to evaluating the air quality in special events such as monsoon and can also provide scientific and technical support for subsequent air pollution research. Moreover, the results help to develop adequate prevention and pollution control strategies and offer policy suggestions for monsoon observing countries in general and in particular, in Islamabad, Pakistan. These findings provide essential arguments in favor of educating people and raising awareness about the detrimental health effects of air pollution. Improving the quality of life of people with cardiovascular and respiratory disorders requires an immediate and substantial reduction of air pollution.
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Affiliation(s)
- Tariq Mehmood
- School of Space and Environment, Beihang University , Beijing, People's Republic of China
- National Center for Physics, Quaid-i-Azam University , Islamabad, Pakistan
| | - Ishaq Ahmad
- National Center for Physics, Quaid-i-Azam University , Islamabad, Pakistan
| | - Saira Bibi
- Institute of Advance Materials, Bahauddin Zakariya University , Multan, Pakistan
| | - Beenish Mustafa
- Department of Physics Nanjing University, Nanjing, People's Republic China
| | - Ijaz Ali
- School of Environmental Science and Engineering, North China Electric Power University , Beijing, People's Republic of China
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