1
|
Xiao J, Li S, Zhu S, Ranjan K, Zhang D. Incidence of lung cancer among healthcare workers in Hunan Province and analysis of related risk factors. Front Public Health 2024; 11:1280316. [PMID: 38249391 PMCID: PMC10797032 DOI: 10.3389/fpubh.2023.1280316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 11/29/2023] [Indexed: 01/23/2024] Open
Abstract
Background The prevalence of lung cancer, a major type of malignant tumor, has been increasing over the years greatly impacting the health of Chinese residents. This study investigates the epidemiological characteristics of lung cancer among healthcare workers in the Hunan Province, as well as the occupational risk factors. Methods The data analyzed in this study was collected from the largest tumor hospital in the province: the Hunan Provincial Tumor Hospital affiliated with Central South University, School of Medicine. The data collected encompasses input collected between the years of 2004 to 2013 of the population of healthcare workers who were hospitalized for lung cancer treatments. Information was obtained through statistical analysis and telephonic interviews. Results The prevalence of lung cancer among healthcare workers was much higher than that of the general population, as revealed by the difference between number of healthcare worker cases per 1,000 cases and number of healthcare workers per 1,000 population in the decade from 2004 to 2013. Analysis of the data further demonstrates that lung cancer prevalence among healthcare workers increases exponentially with age. Although smoking has been shown to increase the incidence of lung cancer to some extent, it is most likely not the main cause of lung cancer. In addition, it appears that the highest rates of lung cancer incidence occurs in mainly in primary general practitioners, medical radiologists, and nurses. The lack of awareness of personal safety measures may place healthcare workers at a greater risk of lung cancer.
Collapse
Affiliation(s)
| | - Sishi Li
- School of Medicine, Central South University, Changsha, China
| | - Shudong Zhu
- Nantong Tumor Hospital, Nantong, Jiangsu, China
- School of Medicine, Central South University, Changsha, China
- School of Medicine, Nantong University, Nantong, Jiangsu, China
- Argus Pharmaceuticals, Changsha, China
| | - Kamakshi Ranjan
- Department of Bio-Medical Sciences, Philadelphia College of Osteopathic Medicine, Philadelphia, PA, United States
| | - Dianzheng Zhang
- Department of Bio-Medical Sciences, Philadelphia College of Osteopathic Medicine, Philadelphia, PA, United States
| |
Collapse
|
2
|
Bai C, Zhang F, Yang Z, Zhang Y, Guo D, Zhang Q. Formaldehyde induced the cardiac damage by regulating the NO/cGMP signaling pathway and L-Ca 2+ channels. Toxicol Res (Camb) 2023; 12:1105-1112. [PMID: 38145098 PMCID: PMC10734627 DOI: 10.1093/toxres/tfad102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 09/25/2023] [Accepted: 10/09/2023] [Indexed: 12/26/2023] Open
Abstract
Background Formaldehyde (FA) is a common environmental pollutant that has been found to cause negative cardiovascular effects, however, the toxicological mechanism is not well understood. In this study, we investigated the molecular effects of the Nitric Oxide (NO)/cyclic Guanosine Monophosphate (cGMP) signaling pathway and L-type calcium (L-Ca2+) channels in rat hearts. Methods We designed the short-term FA exposure on the rat heart in different concentrations (0, 0.5, 3, 18 mg/m3). After 7 days of exposure, the rats were sacrificed and the rat tissues were removed for various experiments. Results Our experimental data showed that FA resulted in the upregulation NO and cGMP, especially at 18 mg/m3. Further, when exposed to high concentrations of FA, Cav1.2 and Cav1.3 expression decreased. We conclude that the NO/cGMP signaling pathway and downstream related channels can be regulated by increasing the production of NO in the low concentration group of FA. High concentration FA directly regulates L-Ca22+ channels. Conclusion This study suggests that FA damages the function of the cardiovascular system by regulating the NO/cGMP signaling pathway and L-Ca2+ channels.
Collapse
Affiliation(s)
- Caixia Bai
- College of Environment and Resource, Shanxi University, Taiyuan 030006, China
- Institute of Environmental Science, Shanxi University, Taiyuan 030006, China
| | - Fu Zhang
- College of Environment and Resource, Shanxi University, Taiyuan 030006, China
| | - Zhenhua Yang
- Institute of Environmental Science, Shanxi University, Taiyuan 030006, China
- Shanxi Laboratory for Yellow River, Shanxi University, Taiyuan 030006, China
| | - Yuexia Zhang
- Institute of Environmental Science, Shanxi University, Taiyuan 030006, China
- Shanxi Laboratory for Yellow River, Shanxi University, Taiyuan 030006, China
| | - Donggang Guo
- College of Environment and Resource, Shanxi University, Taiyuan 030006, China
- Shanxi Laboratory for Yellow River, Shanxi University, Taiyuan 030006, China
| | - Quanxi Zhang
- College of Environment and Resource, Shanxi University, Taiyuan 030006, China
- Institute of Environmental Science, Shanxi University, Taiyuan 030006, China
- Shanxi Laboratory for Yellow River, Shanxi University, Taiyuan 030006, China
| |
Collapse
|
3
|
Xu B, Mei S, Wu W, Liu Q, Xie K. Association of formaldehyde concentration with depression risk in US adults: a population-based epidemiology study. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:98261-98270. [PMID: 37606783 DOI: 10.1007/s11356-023-29290-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 08/08/2023] [Indexed: 08/23/2023]
Abstract
The association of formaldehyde exposure with depression remains unknown. We used the data from National Health and Nutrition Examination Survey (NHANES) 2015-2016 to evaluate the association between formaldehyde exposure and depression. Multivariable logistic regressions and restricted cubic spline (RCS) were implemented to examine the association between formaldehyde exposure and depression. A total of 1336 participants were included in the analysis, of which 110 (8.23%) participants were depressed. After adjusting for confounders, a significant association between formaldehyde exposure and depression (OR = 1.01, 95% CI: 1.00-1.02, P = 0.043) was observed. The RCS plot showed a positive association in a linear manner (PNonlinear = 0.109), and the risk began to rise rapidly with concentrations above 129.37 nmol/g HB. The positive association remained in participants with high-intensity physical activity (OR = 1.08, 95% CI: 1.02-1.13, P = 0.003), but not in participants with other physical activities. Moreover, we constructed a novel nomogram to easily estimate the individual-specific probabilities of depression. In conclusion, formaldehyde exposure was associated with an elevated risk of depression, and the effect exhibited differences in participants with different levels of physical activity.
Collapse
Affiliation(s)
- Bo Xu
- State Key Laboratory of Reproductive Medicine and Offspring Health, Department of Epidemiology, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Shijuan Mei
- Department of Women Health Care, Nanjing Maternity and Child Health Care Hospital, Women's Hospital of Nanjing Medical University, Nanjing, 210004, China
| | - Wanke Wu
- Department of Women Health Care, Nanjing Maternity and Child Health Care Hospital, Women's Hospital of Nanjing Medical University, Nanjing, 210004, China
| | - Qi Liu
- Department of Women Health Care, Nanjing Maternity and Child Health Care Hospital, Women's Hospital of Nanjing Medical University, Nanjing, 210004, China
| | - Kaipeng Xie
- Department of Women Health Care, Nanjing Maternity and Child Health Care Hospital, Women's Hospital of Nanjing Medical University, Nanjing, 210004, China.
- Department of Public Health, Nanjing Maternity and Child Health Care Hospital, Women's Hospital of Nanjing Medical University, Nanjing, 210004, China.
| |
Collapse
|
4
|
Marcano-Gómez EC, de Souza ABF, Machado-Junior PA, Rodríguez-Herrera AJ, Castro TDF, da Silva SPG, Vieira RG, Talvani A, Nogueira KDOPC, de Oliveira LAM, Bezerra FS. N-acetylcysteine modulates redox imbalance and inflammation in macrophages and mice exposed to formaldehyde. Free Radic Res 2023; 57:444-459. [PMID: 37987619 DOI: 10.1080/10715762.2023.2284636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 11/04/2023] [Indexed: 11/22/2023]
Abstract
This study aimed to evaluate the protective role of N-acetylcysteine (NAC) in cells and mice exposed to formaldehyde. For the in vitro study, J774A.1 macrophages cells were incubated for 8, 16 and 24 h with formaldehyde or NAC to assess cell viability and reactive oxygen species (ROS). In the in vivo study, C57BL/6 mice (n = 48) were divided into 6 groups: control (CG), vehicle (VG) that received saline by orogastric gavage, a group exposed to formaldehyde 1% (FG) and formaldehyde exposed groups that received NAC at doses of 100, 150 and 200 mg/Kg (FN100, FN150 and FN200) for a period of 5 days. In vitro, formaldehyde promoted a decrease in cell viability and increased ROS, while NAC reduced formaldehyde-induced ROS production. Animals exposed to formaldehyde presented higher leukocyte counts in the blood and in the bronchoalveolar lavage fluid, and promoted secretion of inflammatory markers IL-6, IL-15, and IL-10. The exposure to formaldehyde also promoted redox imbalance and oxidative damage characterized by increased activities of superoxide dismutase, catalase, decreased GSH/GSSG ratio, as well as it increased levels of protein carbonyls and lipid peroxidation. NAC administration after formaldehyde exposure attenuated oxidative stress markers, secretion of inflammatory mediators and lung inflammation. In conclusion, both in in vitro and in vivo models, NAC administration exerted protective effects, which modulated the inflammatory response and redox imbalance, thus preventing the development airway injury induced by formaldehyde exposure.
Collapse
Affiliation(s)
- Elena Cecilia Marcano-Gómez
- Laboratory of Experimental Pathophysiology, Department of Biological Sciences and Center of Research in Biological Sciences, Federal University of Ouro Preto (UFOP), Ouro Preto, Brazil
| | - Ana Beatriz Farias de Souza
- Laboratory of Experimental Pathophysiology, Department of Biological Sciences and Center of Research in Biological Sciences, Federal University of Ouro Preto (UFOP), Ouro Preto, Brazil
| | - Pedro Alves Machado-Junior
- Laboratory of Experimental Pathophysiology, Department of Biological Sciences and Center of Research in Biological Sciences, Federal University of Ouro Preto (UFOP), Ouro Preto, Brazil
| | - Andrea Jazel Rodríguez-Herrera
- Laboratory of Experimental Pathophysiology, Department of Biological Sciences and Center of Research in Biological Sciences, Federal University of Ouro Preto (UFOP), Ouro Preto, Brazil
| | - Thalles de Freitas Castro
- Laboratory of Experimental Pathophysiology, Department of Biological Sciences and Center of Research in Biological Sciences, Federal University of Ouro Preto (UFOP), Ouro Preto, Brazil
| | - Sirlaine Pio Gomes da Silva
- Laboratory of Immunobiology of Inflammation, Department of Biological Sciences, Institute of Exact and Biological Sciences, Federal University of Ouro Preto (UFOP), Ouro Preto, Brazil
| | - Ramony Gonzaga Vieira
- Laboratory of Neurobiology and Biomaterials, Department of Biological Sciences, Institute of Exact and Biological Sciences, Federal University of Ouro Preto (UFOP), Ouro Preto, Brazil
| | - André Talvani
- Laboratory of Immunobiology of Inflammation, Department of Biological Sciences, Institute of Exact and Biological Sciences, Federal University of Ouro Preto (UFOP), Ouro Preto, Brazil
| | - Katiane de Oliveira Pinto Coelho Nogueira
- Laboratory of Neurobiology and Biomaterials, Department of Biological Sciences, Institute of Exact and Biological Sciences, Federal University of Ouro Preto (UFOP), Ouro Preto, Brazil
| | - Laser Antônio Machado de Oliveira
- Laboratory of Neurobiology and Biomaterials, Department of Biological Sciences, Institute of Exact and Biological Sciences, Federal University of Ouro Preto (UFOP), Ouro Preto, Brazil
| | - Frank Silva Bezerra
- Laboratory of Experimental Pathophysiology, Department of Biological Sciences and Center of Research in Biological Sciences, Federal University of Ouro Preto (UFOP), Ouro Preto, Brazil
| |
Collapse
|
5
|
Effect of Formaldehyde and Curcumin on Histomorphological Indices, Gene Expression Associated with Ovarian Follicular Development, and Total Antioxidant to Oxidant Levels in Wistar Rats. Int J Biomater 2023; 2023:4662440. [PMID: 36776151 PMCID: PMC9908331 DOI: 10.1155/2023/4662440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 01/03/2023] [Accepted: 01/19/2023] [Indexed: 02/04/2023] Open
Abstract
The present experimental study was undertaken to investigate the effect of formaldehyde (FA) and curcumin (CUR) on histomorphological features, antioxidant potential, and messenger ribonucleic acid (mRNA) levels of genes related to follicular development in FA-exposed rats. 24 Wistar female rats were divided into four study groups and given intraperitoneal injections of FA (10 mg/kg) (N = 6), FA (10 mg/kg) + CUR (100 mg/kg) (N = 6), sham (N = 6), and control (N = 6) for 14 days. Ovarian follicular histology, the related gene expression, blood factors, and anti/oxidation potentials were assessed using ovarian tissue and serum, respectively. The klotho was significantly overexpressed in the FA group compared with controls and shams. Contradictory, the factor in germ line alpha was significantly down-regulated in FA and FA + CUR groups compared to shams and controls. A significant decline was seen in the number of ovarian follicles in the FA group, independent of the developmental stage. Regarding the comparison of the FA + CUR group to other groups, a significant change was seen in the number of secondary, graafian, and atretic follicles. The FA group demonstrated significantly lower hemoglobin, red blood cell count, hematocrit, and mean corpuscular hemoglobin concentration than controls. The activity of glutathione peroxidase increased significantly in the FA group than in the controls. Despite the deleterious effects of FA on histological and molecular aspects of rat ovarian follicles, CUR does not appear to have a protective effect against the hazardous effects of this chemical. However, CUR in some cases has positive effects such as reducing follicular destruction and interstitial edema.
Collapse
|
6
|
da Silva PF, de Matos NA, Ramos CDO, Castro TDF, Araújo NPDS, de Souza ABF, Costa GDP, Cangussú SD, Talvani A, Nagato AC, Bezerra FS. Acute Outcomes of Cigarette Smoke and Electronic Cigarette Aerosol Inhalation in a Murine Model. BIOMED RESEARCH INTERNATIONAL 2022; 2022:9938179. [PMID: 36193298 PMCID: PMC9526610 DOI: 10.1155/2022/9938179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 07/14/2022] [Accepted: 09/08/2022] [Indexed: 11/17/2022]
Abstract
Cigarette smoking throughout life causes serious health issues in the lungs. The electronic cigarette (E-Cig) use increased, since it was first introduced in the world. This research work compared the short-term exposure consequences to e-cigarette vapor and cigarette smoke in male mice. Forty-five C57BL/6 mice were randomized into control (C) in an ambient air exposition cigarette smoke (CS) and aerosol electronic cigarette (EC), both were exposed to 120 puffs, 3 times/day during five days. Then, in the experimental protocol, the euthanized mice had their tissues removed for analysis. Our study showed that CS and EC resulted in higher cell influx into the airways, and an increase in macrophage counts in CS (209.25 ± 7.41) and EC (220.32 ± 8.15) when compared to C (108.40 ± 4.49) (p < 0.0001). The CS (1.92 ± 0.23) displayed a higher pulmonary lipid peroxidation as opposed to C (0.93 ± 0.06) and EC (1.23 ± 0.17) (p < 0.05). The EC (282.30 ± 25.68) and CS (368.50 ± 38.05) promoted increased levels of interleukin 17 when compared to C (177.20 ± 10.49) (p < 0.05). The EC developed shifts in lung histoarchitecture, characterized by a higher volume density in the alveolar air space (60.21; 55.00-65.83) related to C (51.25; 18.75-68.75) and CS (50.26; 43.75-62.08) (p =0.002). The EC (185.6 ± 9.01) presented a higher respiratory rate related to CS (133.6 ± 10.2) (p < 0.002). Therefore, our findings demonstrated that the short-term exposure to e-cig promoted more acute inflammation comparing to cigarette smoke in the ventilatory parameters of the animals.
Collapse
Affiliation(s)
- Pamela Félix da Silva
- Experimental Pathophysiology Laboratory (LAFEx), Biological Sciences Department (DECBI), Research Center in Biological Sciences (NUPEB), Federal University of Ouro Preto (UFOP), Brazil
| | - Natália Alves de Matos
- Experimental Pathophysiology Laboratory (LAFEx), Biological Sciences Department (DECBI), Research Center in Biological Sciences (NUPEB), Federal University of Ouro Preto (UFOP), Brazil
| | - Camila de Oliveira Ramos
- Experimental Pathophysiology Laboratory (LAFEx), Biological Sciences Department (DECBI), Research Center in Biological Sciences (NUPEB), Federal University of Ouro Preto (UFOP), Brazil
| | - Thalles de Freitas Castro
- Experimental Pathophysiology Laboratory (LAFEx), Biological Sciences Department (DECBI), Research Center in Biological Sciences (NUPEB), Federal University of Ouro Preto (UFOP), Brazil
| | - Natália Pereira da Silva Araújo
- Experimental Pathophysiology Laboratory (LAFEx), Biological Sciences Department (DECBI), Research Center in Biological Sciences (NUPEB), Federal University of Ouro Preto (UFOP), Brazil
| | - Ana Beatriz Farias de Souza
- Experimental Pathophysiology Laboratory (LAFEx), Biological Sciences Department (DECBI), Research Center in Biological Sciences (NUPEB), Federal University of Ouro Preto (UFOP), Brazil
| | - Guilherme de Paula Costa
- Immunobiology of Inflammation Laboratory (LABIIN), Biological Sciences Department (DECBI), Research Center in Biological Sciences (NUPEB), Federal University of Ouro Preto (UFOP), Brazil
| | - Sílvia Dantas Cangussú
- Experimental Pathophysiology Laboratory (LAFEx), Biological Sciences Department (DECBI), Research Center in Biological Sciences (NUPEB), Federal University of Ouro Preto (UFOP), Brazil
| | - André Talvani
- Immunobiology of Inflammation Laboratory (LABIIN), Biological Sciences Department (DECBI), Research Center in Biological Sciences (NUPEB), Federal University of Ouro Preto (UFOP), Brazil
| | - Akinori Cardozo Nagato
- Immunopathology Laboratory and Experimental Pathology, Reproductive Biology Center (CRB), Federal University of Juiz de Fora, Minas Gerais, Brazil
- Department of Physiology, Federal University of Juiz de Fora, Minas Gerais, Brazil
| | - Frank Silva Bezerra
- Experimental Pathophysiology Laboratory (LAFEx), Biological Sciences Department (DECBI), Research Center in Biological Sciences (NUPEB), Federal University of Ouro Preto (UFOP), Brazil
| |
Collapse
|
7
|
Saunders RM, Biddle M, Amrani Y, Brightling CE. Stressed out - The role of oxidative stress in airway smooth muscle dysfunction in asthma and COPD. Free Radic Biol Med 2022; 185:97-119. [PMID: 35472411 DOI: 10.1016/j.freeradbiomed.2022.04.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 04/06/2022] [Accepted: 04/19/2022] [Indexed: 12/14/2022]
Abstract
The airway smooth muscle (ASM) surrounding the airways is dysfunctional in both asthma and chronic obstructive pulmonary disease (COPD), exhibiting; increased contraction, increased mass, increased inflammatory mediator release and decreased corticosteroid responsiveness. Due to this dysfunction, ASM is a key contributor to symptoms in patients that remain symptomatic despite optimal provision of currently available treatments. There is a significant body of research investigating the effects of oxidative stress/ROS on ASM behaviour, falling into the following categories; cigarette smoke and associated compounds, air pollutants, aero-allergens, asthma and COPD relevant mediators, and the anti-oxidant Nrf2/HO-1 signalling pathway. However, despite a number of recent reviews addressing the role of oxidative stress/ROS in asthma and COPD, the potential contribution of oxidative stress/ROS-related ASM dysfunction to asthma and COPD pathophysiology has not been comprehensively reviewed. We provide a thorough review of studies that have used primary airway, bronchial or tracheal smooth muscle cells to investigate the role of oxidative stress/ROS in ASM dysfunction and consider how they could contribute to the pathophysiology of asthma and COPD. We summarise the current state of play with regards to clinical trials/development of agents targeting oxidative stress and associated limitations, and the adverse effects of oxidative stress on the efficacy of current therapies, with reference to ASM related studies where appropriate. We also identify limitations in the current knowledge of the role of oxidative stress/ROS in ASM dysfunction and identify areas for future research.
Collapse
Affiliation(s)
- Ruth M Saunders
- The Institute for Lung Health, NIHR Leicester Biomedical Research Centre, University of Leicester, Leicester, UK.
| | - Michael Biddle
- The Institute for Lung Health, NIHR Leicester Biomedical Research Centre, University of Leicester, Leicester, UK
| | - Yassine Amrani
- The Institute for Lung Health, NIHR Leicester Biomedical Research Centre, University of Leicester, Leicester, UK
| | - Christopher E Brightling
- The Institute for Lung Health, NIHR Leicester Biomedical Research Centre, University of Leicester, Leicester, UK
| |
Collapse
|
8
|
Metabolomics of COPD Pulmonary Rehabilitation Outcomes via Exhaled Breath Condensate. Cells 2022; 11:cells11030344. [PMID: 35159156 PMCID: PMC8834302 DOI: 10.3390/cells11030344] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Revised: 01/16/2022] [Accepted: 01/17/2022] [Indexed: 01/02/2023] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is characterized by different phenotypes and clinical presentations. Therefore, a single strategy of pulmonary rehabilitation (PR) does not always yield the expected clinical outcomes as some individuals respond excellently, others discreetly, or do not respond at all. Fifty consecutive COPD patients were enrolled. Of them, 35 starting a 5-week PR program were sampled at admission (T0), after 2 (T2W) and 5 (T5W) weeks, while 15 controls not yet on PR were tested at T0 and T5W. Nuclear magnetic resonance (NMR) profiling of exhaled breath condensate (EBC) and multivariate statistical analysis were applied to investigate the relationship between biomarkers and clinical parameters. The model including the three classes correctly located T2W between T0 and T5W, but 38.71% of samples partially overlapped with T0 and 32.26% with T5W, suggesting that for some patients PR is already beneficial at T2W (32.26% overlapping with T5W), while for others (38.71% overlapping with T0) more time is required. Rehabilitated patients presented several altered biomarkers. In particular, methanol from T0 to T5W decreased in parallel with dyspnea and fatigue, while the walk distance increased. Methanol could be ascribed to lung inflammation. We demonstrated that the metabolic COPD phenotype clearly evolves during PR, with a strict relationship between clinical and molecular parameters. Methanol, correlating with clinical parameters, represents a useful biomarker for monitoring personalized outcomes and establishing more targeted protocols.
Collapse
|
9
|
Xu J, Jin X, Ye Z, Wang D, Zhao H, Tong Z. Opposite Roles of Co-enzyme Q10 and Formaldehyde in Neurodegenerative Diseases. Am J Alzheimers Dis Other Demen 2022; 37:15333175221143274. [PMID: 36455136 PMCID: PMC10624093 DOI: 10.1177/15333175221143274] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Most of neurodegenerative diseases (NDD) have no cure. The common etiology of neurodegenerations is unclear. Air pollutant-gaseous formaldehyde is notoriously known to induce demyelination and cognitive impairments. Unexpectedly, an amount of formaldehyde has been detected in the brains. Multiple factors can induce the generation and accumulation of endogenous formaldehyde. Excessive formaldehyde can induce oxidative stress to generate H2O2; in turn, H2O2 promote formaldehyde production. Clinical investigations have shown that an abnormal high level of formaldehyde but low level of coenzyme Q10 (coQ10) was observed in patients with NDD. Further studies have proven that excessive formaldehyde directly inactivates coQ10, reduces the ATP generation, enhances oxidative stress, initiates inflammation storm, induces demyelination; subsequently, it results in neurodegeneration. Although the low water solubility of coQ10 limits its clinical application, nanomicellar water-soluble coQ10 exhibits positive therapeutical effects. Hence, nanopackage of coQ10 may be a promising strategy for treating NDD.
Collapse
Affiliation(s)
- Jinan Xu
- Institute of Ningbo, Wenzhou Medical University, Wenzhou, China
- Key Laboratory of Alzheimer’s Disease of Zhejiang Province, Institute of Aging, Oujiang Laboratory, School of Mental Health, Wenzhou Medical University, Wenzhou, China
| | - Xingjiang Jin
- Key Laboratory of Alzheimer’s Disease of Zhejiang Province, Institute of Aging, Oujiang Laboratory, School of Mental Health, Wenzhou Medical University, Wenzhou, China
| | - Zuting Ye
- Key Laboratory of Alzheimer’s Disease of Zhejiang Province, Institute of Aging, Oujiang Laboratory, School of Mental Health, Wenzhou Medical University, Wenzhou, China
| | - Dandan Wang
- Key Laboratory of Alzheimer’s Disease of Zhejiang Province, Institute of Aging, Oujiang Laboratory, School of Mental Health, Wenzhou Medical University, Wenzhou, China
| | - Hang Zhao
- Key Laboratory of Alzheimer’s Disease of Zhejiang Province, Institute of Aging, Oujiang Laboratory, School of Mental Health, Wenzhou Medical University, Wenzhou, China
| | - Zhiqian Tong
- Institute of Ningbo, Wenzhou Medical University, Wenzhou, China
- Key Laboratory of Alzheimer’s Disease of Zhejiang Province, Institute of Aging, Oujiang Laboratory, School of Mental Health, Wenzhou Medical University, Wenzhou, China
| |
Collapse
|
10
|
Liu QP, Ge P, Wang QN, Zhang SY, Yang YQ, Lv MQ, Lu Y, Li MX, Zhou DX. Circular RNA-CDR1as is involved in lung injury induced by long-term formaldehyde inhalation. Inhal Toxicol 2021; 33:325-333. [PMID: 34752207 DOI: 10.1080/08958378.2021.1999350] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
OBJECTIVE Formaldehyde (FA) is known to induce lung injury, but the underlying molecular mechanism remains largely unclear. CDR1as is an important member of the circular RNAs (circRNAs) family and functions as miRNA sponges with gene-regulatory potential. Our earlier circRNA microarray data showed CDR1as was highly expressed in lung tissue exposed to FA. However, the mechanism of circRNA-CDR1as mediates the FA-exposed lung injury is still unclear. This study aimed to explore the role of CDR1as in lung injury. MATERIALS AND METHODS In this study, FA was inhaled at doses of 0.5, 2.46, and 5 mg/m3, respectively. After exposure 8 weeks, lung histopathological examination, lung injury score, and IL-1β in bronchoalveolar lavage fluid (BALF) were determined. The expressions of CDR1as, rno-miR-7b and Atg7 were detected and the potential interaction of circRNA/miRNA/mRNA was predicted by bioinformatics analysis, including drawing circRNA/miRNA/mRNA interaction network, GO and KEGG analysis. RESULTS Our results indicated FA inhalation upregulated the expression of CDR1as in lung tissues in a dose-dependent manner while the expression of rno-miR-7b decreased and Atg7 increased. Moreover, the alteration of CDR1as was positively correlated with lung injury. DISCUSSION AND CONCLUSIONS CircRNA/miRNA/mRNA prediction further explained the possible effect mechanisms of CDR1as. These data implicated that CDR1as might be a critical regulator involved in lung injury induced by FA.
Collapse
Affiliation(s)
- Qiu-Ping Liu
- Department of Pathology, Medical School, Xi'an Jiaotong University, Xi'an, China.,Respiratory Department, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.,Xi'an People's Hospital (Xi'an Fourth Hospital), Xi'an, China
| | - Pan Ge
- Department of Pathology, Medical School, Xi'an Jiaotong University, Xi'an, China.,Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education of China, Xi'an Jiaotong University, Xi'an, China
| | - Qian-Nan Wang
- Qide College, Xi'an Jiaotong University, Xi'an, China
| | - Shu-Yu Zhang
- Zonglian College, Xi'an Jiaotong University, Xi'an, China
| | - Yan-Qi Yang
- Department of Pathology, Medical School, Xi'an Jiaotong University, Xi'an, China.,Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education of China, Xi'an Jiaotong University, Xi'an, China
| | - Mo-Qi Lv
- Department of Pathology, Medical School, Xi'an Jiaotong University, Xi'an, China.,Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education of China, Xi'an Jiaotong University, Xi'an, China
| | - Ye Lu
- Xi'an People's Hospital (Xi'an Fourth Hospital), Xi'an, China
| | - Man-Xiang Li
- Respiratory Department, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Dang-Xia Zhou
- Department of Pathology, Medical School, Xi'an Jiaotong University, Xi'an, China.,Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education of China, Xi'an Jiaotong University, Xi'an, China
| |
Collapse
|
11
|
Chang-Chien J, Huang HY, Tsai HJ, Lo CJ, Lin WC, Tseng YL, Wang SL, Ho HY, Cheng ML, Yao TC. Metabolomic differences of exhaled breath condensate among children with and without asthma. Pediatr Allergy Immunol 2021; 32:264-272. [PMID: 32920883 DOI: 10.1111/pai.13368] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 08/24/2020] [Accepted: 08/26/2020] [Indexed: 12/30/2022]
Abstract
BACKGROUND There remains an unmet need in objective tests for diagnosing asthma in children. The objective of this study was to investigate the potential of metabolomic profiles of exhaled breath condensate (EBC) to discriminate stable asthma in Asian children in the community. METHODS One hundred and sixty-five Asian children (92 stable asthma and 73 non-asthmatic controls) participating in a population-based cohort were enrolled and divided into training and validation sets. Nuclear magnetic resonance-based metabolomic profiles of EBC samples were analyzed by using orthogonal partial least squares discriminant analysis. RESULTS EBC metabolomic signature (lactate, formate, butyrate, and isobutyrate) had an area under the receiver operator characteristic curve (AUC) of 0.826 in discriminating children with and without asthma in the training set, which significantly outperformed FeNO (AUC = 0.574; P < .001) and FEV1 /FVC % predicted (AUC = 0.569; P < .001). The AUC for EBC metabolomic signature was 0.745 in the validation set, which was slightly but not significantly lower than in the testing set (P = .282). We further extrapolated two potentially involved metabolic pathways, including pyruvate (P = 1.67 × 10-3 ; impact: 0.14) and methane (P = 1.89 × 10-3 ; impact: 0.15), as the most likely divergent metabolisms between children with and without asthma. CONCLUSION This study provided evidence supporting the role of EBC metabolomic signature to discriminate stable asthma in Asian children in the community, with a discriminative property outperforming conventional clinical tests such as FeNO or spirometry.
Collapse
Affiliation(s)
- Ju Chang-Chien
- Division of Allergy, Asthma, and Rheumatology, Department of Pediatrics, Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Taoyuan, Taiwan
| | - Hsin-Yi Huang
- Division of Allergy, Asthma, and Rheumatology, Department of Pediatrics, Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Taoyuan, Taiwan
| | - Hui-Ju Tsai
- Institute of Population Health Sciences, National Health Research Institutes, Zhunan, Taiwan
| | - Chi-Jen Lo
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan, Taiwan
| | - Wan-Chen Lin
- Division of Allergy, Asthma, and Rheumatology, Department of Pediatrics, Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Taoyuan, Taiwan
| | - Yu-Lun Tseng
- Division of Allergy, Asthma, and Rheumatology, Department of Pediatrics, Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Taoyuan, Taiwan
| | - Shih-Ling Wang
- Division of Allergy, Asthma, and Rheumatology, Department of Pediatrics, Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Taoyuan, Taiwan
| | - Hung-Yao Ho
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan, Taiwan.,Clinical Metabolomics Core Laboratory, Chang Gung Memorial Hospital, Taoyuan, Taiwan.,Department of Medical Biotechnology and Laboratory Science, Chang Gung University College of Medicine, Taoyuan, Taiwan
| | - Mei-Ling Cheng
- Metabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan, Taiwan.,Clinical Metabolomics Core Laboratory, Chang Gung Memorial Hospital, Taoyuan, Taiwan.,Department of Biomedical Sciences, Chang Gung University College of Medicine, Taoyuan, Taiwan
| | - Tsung-Chieh Yao
- Division of Allergy, Asthma, and Rheumatology, Department of Pediatrics, Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Taoyuan, Taiwan.,Community Medicine Research Center, Chang Gung Memorial Hospital at Keelung, Keelung, Taiwan
| |
Collapse
|
12
|
Dusautoir R, Zarcone G, Verriele M, Garçon G, Fronval I, Beauval N, Allorge D, Riffault V, Locoge N, Lo-Guidice JM, Anthérieu S. Comparison of the chemical composition of aerosols from heated tobacco products, electronic cigarettes and tobacco cigarettes and their toxic impacts on the human bronchial epithelial BEAS-2B cells. JOURNAL OF HAZARDOUS MATERIALS 2021; 401:123417. [PMID: 32763707 DOI: 10.1016/j.jhazmat.2020.123417] [Citation(s) in RCA: 61] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 06/29/2020] [Accepted: 07/05/2020] [Indexed: 06/11/2023]
Abstract
The electronic cigarettes (e-cigs) and more recently the heated tobacco products (HTP) provide alternatives for smokers as they are generally perceived to be less harmful than conventional cigarettes. However, it is crucial to compare the health risks of these different emergent devices, in order to determine which product should be preferred to substitute cigarette. The present study aimed to compare the composition of emissions from HTP, e-cigs and conventional cigarettes, regarding selected harmful or potentially harmful compounds, and their toxic impacts on the human bronchial epithelial BEAS-2B cells. The HTP emitted less polycyclic aromatic hydrocarbons and carbonyls than the conventional cigarette. However, amounts of these compounds in HTP aerosols were still higher than in e-cig vapours. Concordantly, HTP aerosol showed reduced cytotoxicity compared to cigarette smoke but higher than e-cig vapours. HTP and e-cig had the potential to increase oxidative stress and inflammatory response, in a manner similar to that of cigarette smoke, but after more intensive exposures. In addition, increasing e-cig power impacted levels of certain toxic compounds and related oxidative stress. This study provides important data necessary for risk assessment by demonstrating that HTP might be less harmful than tobacco cigarette but considerably more harmful than e-cig.
Collapse
Affiliation(s)
- Romain Dusautoir
- Univ. Lille, CHU Lille, Institut Pasteur de Lille, ULR 4483, IMPECS - IMPact de l'Environnement Chimique sur la Santé humaine, F-59000, Lille, France.
| | - Gianni Zarcone
- Univ. Lille, CHU Lille, Institut Pasteur de Lille, ULR 4483, IMPECS - IMPact de l'Environnement Chimique sur la Santé humaine, F-59000, Lille, France.
| | - Marie Verriele
- IMT Lille Douai, Univ. Lille, SAGE, F-59000, Lille, France.
| | - Guillaume Garçon
- Univ. Lille, CHU Lille, Institut Pasteur de Lille, ULR 4483, IMPECS - IMPact de l'Environnement Chimique sur la Santé humaine, F-59000, Lille, France.
| | | | - Nicolas Beauval
- Univ. Lille, CHU Lille, Institut Pasteur de Lille, ULR 4483, IMPECS - IMPact de l'Environnement Chimique sur la Santé humaine, F-59000, Lille, France.
| | - Delphine Allorge
- Univ. Lille, CHU Lille, Institut Pasteur de Lille, ULR 4483, IMPECS - IMPact de l'Environnement Chimique sur la Santé humaine, F-59000, Lille, France.
| | | | - Nadine Locoge
- IMT Lille Douai, Univ. Lille, SAGE, F-59000, Lille, France.
| | - Jean-Marc Lo-Guidice
- Univ. Lille, CHU Lille, Institut Pasteur de Lille, ULR 4483, IMPECS - IMPact de l'Environnement Chimique sur la Santé humaine, F-59000, Lille, France.
| | - Sébastien Anthérieu
- Univ. Lille, CHU Lille, Institut Pasteur de Lille, ULR 4483, IMPECS - IMPact de l'Environnement Chimique sur la Santé humaine, F-59000, Lille, France.
| |
Collapse
|
13
|
Su C, Liu K, Guo Y, Li H, Zeng Z, Li L. The role of pore structure and nitrogen surface groups in the adsorption behavior of formaldehyde on resin‐based carbons. SURF INTERFACE ANAL 2020. [DOI: 10.1002/sia.6920] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Changqing Su
- School of Energy Science and Engineering Central South University Changsha China
- Institute of Big Data and Internet Innovations Hunan University of Technology and Business Changsha China
| | - Keke Liu
- School of Energy Science and Engineering Central South University Changsha China
| | - Yang Guo
- School of Energy Science and Engineering Central South University Changsha China
| | - Hailong Li
- School of Energy Science and Engineering Central South University Changsha China
| | - Zheng Zeng
- School of Energy Science and Engineering Central South University Changsha China
| | - Liqing Li
- School of Energy Science and Engineering Central South University Changsha China
| |
Collapse
|
14
|
Bernardini L, Barbosa E, Charão MF, Goethel G, Muller D, Bau C, Steffens NA, Santos Stein C, Moresco RN, Garcia SC, Souza Vencato M, Brucker N. Oxidative damage, inflammation, genotoxic effect, and global DNA methylation caused by inhalation of formaldehyde and the purpose of melatonin. Toxicol Res (Camb) 2020; 9:778-789. [PMID: 33447362 PMCID: PMC7786178 DOI: 10.1093/toxres/tfaa079] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 09/09/2020] [Accepted: 10/05/2020] [Indexed: 12/13/2022] Open
Abstract
Formaldehyde (FA) exposure has been proven to increase the risk of asthma and cancer. This study aimed to evaluate for 28 days the FA inhalation effects on oxidative stress, inflammation process, genotoxicity, and global DNA methylation in mice as well as to investigate the potential protective effects of melatonin. For that, analyses were performed on lung, liver and kidney tissues, blood, and bone marrow. Bronchoalveolar lavage was used to measure inflammatory parameters. Lipid peroxidation (TBARS), protein carbonyl (PCO), non-protein thiols (NPSH), catalase activity (CAT), comet assay, micronuclei (MN), and global methylation were determined. The exposure to 5-ppm FA resulted in oxidative damage to the lung, presenting a significant increase in TBARS and NO levels and a decrease in NPSH levels, besides an increase in inflammatory cells recruited for bronchoalveolar lavage. Likewise, in the liver tissue, the exposure to 5-ppm FA increased TBARS and PCO levels and decreased NPSH levels. In addition, FA significantly induced DNA damage, evidenced by the increase of % tail moment and MN frequency. The pretreatment of mice exposed to FA applying melatonin improved inflammatory and oxidative damage in lung and liver tissues and attenuated MN formation in bone marrow cells. The pulmonary histological study reinforced the results observed in biochemical parameters, demonstrating the potential beneficial role of melatonin. Therefore, our results demonstrated that FA exposure with repeated doses might induce oxidative damage, inflammatory, and genotoxic effects, and melatonin minimized the toxic effects caused by FA inhalation in mice.
Collapse
Affiliation(s)
- Letícia Bernardini
- Graduate Program in Pharmacology, Federal University of Santa Maria, Santa Maria, RS 97105-900, Brazil
| | - Eduardo Barbosa
- Graduate Program on Toxicology and Analytical Toxicology, University Feevale, Novo Hamburgo, RS 93525-075, Brazil
| | - Mariele Feiffer Charão
- Graduate Program on Toxicology and Analytical Toxicology, University Feevale, Novo Hamburgo, RS 93525-075, Brazil
| | - Gabriela Goethel
- Graduate Program in Pharmaceutical Sciences, Federal University of Rio Grande do Sul, Porto Alegre, RS 90610-000, Brazil
| | - Diana Muller
- Department of Genetics, Instituto de Biociências, Federal University of Rio Grande do Sul, Porto Alegre, RS 90610-000, Brazil
| | - Claiton Bau
- Department of Genetics, Instituto de Biociências, Federal University of Rio Grande do Sul, Porto Alegre, RS 90610-000, Brazil
| | - Nadine Arnold Steffens
- Graduate Program in Pharmaceutical Sciences, Federal University of Santa Maria, Santa Maria, RS 97105-900, Brazil
| | - Carolina Santos Stein
- Graduate Program in Pharmaceutical Sciences, Federal University of Santa Maria, Santa Maria, RS 97105-900, Brazil
| | - Rafael Noal Moresco
- Graduate Program in Pharmaceutical Sciences, Federal University of Santa Maria, Santa Maria, RS 97105-900, Brazil
| | - Solange Cristina Garcia
- Graduate Program in Pharmaceutical Sciences, Federal University of Rio Grande do Sul, Porto Alegre, RS 90610-000, Brazil
| | - Marina Souza Vencato
- Departament of Morphology, Federal University of Santa Maria, Santa Maria, RS 97105-900, Brazil
| | - Natália Brucker
- Graduate Program in Pharmacology, Federal University of Santa Maria, Santa Maria, RS 97105-900, Brazil
| |
Collapse
|
15
|
NMR Profiling of Exhaled Breath Condensate Defines Different Metabolic Phenotypes of Non-Cystic Fibrosis Bronchiectasis. Int J Mol Sci 2020; 21:ijms21228600. [PMID: 33202684 PMCID: PMC7698311 DOI: 10.3390/ijms21228600] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 11/06/2020] [Accepted: 11/10/2020] [Indexed: 12/16/2022] Open
Abstract
Nuclear-magnetic-resonance (NMR) profiling of exhaled breath condensate (EBC) provides insights into the pathophysiology of bronchiectasis by identifying specific biomarkers. We evaluated whether NMR-based metabolomics discriminates the EBC-derived metabolic phenotypes (“metabotypes”) of 41 patients with non-cystic fibrosis (nCF) bronchiectasis of various etiology [24 subjects with Primary Ciliary Dyskinesia (PCD); 17 patients with bronchiectasis not associated with PCD (nCF/nPCD)], who were compared to 17 healthy subjects (HS). NMR was used for EBC profiling, and Orthogonal Projections to Latent Structures with partial least-squares discriminant analysis (OPLS-DA) was used as a classifier. The results were validated by using the EBC from 17 PCD patients not included in the primary analysis. Different statistical models were built, which compared nCF/nPCD and HS, PCD and HS, all classes (nCF/nPCD-PCD-HS), and, finally, PCD and nCF/nPCD. In the PCD-nCF/nPCD model, four statistically significant metabolites were able to discriminate between the two groups, with only a minor reduction of the quality parameters. In particular, for nCF/nPCD, acetone/acetoin and methanol increased by 21% and 18%, respectively. In PCD patients, ethanol and lactate increased by 25% and 28%, respectively. They are all related to lung inflammation as methanol is found in the exhaled breath of lung cancer patients, acetone/acetoin produce toxic ROS that damage lung tissue in CF, and lactate is observed in acute inflammation. Interestingly, a high concentration of ethanol hampers cilia beating and can be associated with the genetic defect of PCD. Model validation with 17 PCD samples not included in the primary analysis correctly predicted all samples. Our results indicate that NMR of EBC discriminates nCF/nPCD and PCD bronchiectasis patients from HS, and patients with nCF/nPCD from those with PCD. The metabolites responsible for between-group separation identified specific metabotypes, which characterize bronchiectasis of a different etiology.
Collapse
|
16
|
Augenreich M, Stickford J, Stute N, Koontz L, Cope J, Bennett C, Ratchford SM. Vascular dysfunction and oxidative stress caused by acute formaldehyde exposure in female adults. Am J Physiol Heart Circ Physiol 2020; 319:H1369-H1379. [PMID: 33064555 DOI: 10.1152/ajpheart.00605.2020] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Formaldehyde (FA) is a common, volatile organic compound used in organic preservation with known health effects of eye, nose, and throat irritation linked to oxidative stress and inflammation. Indeed, long-term FA exposure may provoke skin disorders, cancer, and cardiovascular disease. However, the effects of short-term FA exposure on the vasculature have yet to be investigated. We sought to investigate the impact of an acute FA exposure on 1) macrovascular function in the arm (brachial artery flow-mediated dilation, FMD), 2) microvascular function in the arm (brachial artery reactive hyperemia, RH) and leg (common femoral artery, supine passive limb movement, PLM), and 3) circulating markers of oxidative stress (xanthine oxidase, XO; protein carbonyl, PC; and malondialdehyde, MDA) and inflammation (C-reactive protein, CRP). Ten (n = 10) healthy females (23 ± 1 yr) were studied before and immediately after a 90-min FA exposure [(FA): 197 ± 79 ppb] in cadaver dissection laboratories. Brachial artery FMD% decreased following FA exposure (Pre-FA Exp: 9.41 ± 4.21%, Post-FA Exp: 6.74 ± 2.57%; P = 0.043), and FMD/shear decreased following FA exposure (Pre-FA Exp: 0.13 ± 0.07 AU, Post-FA Exp: 0.07 ± 0.03 AU; P = 0.016). The area under the curve for brachial artery RH (Pre-FA Exp: 481 ± 191 ml, Post-FA Exp: 499 ± 165 ml) and common femoral artery PLM (Pre-FA Exp: 139 ± 95 ml, Post-FA Exp: 129 ± 64 ml) were unchanged by FA exposure (P > 0.05). Circulating MDA increased (Pre-FA Exp: 4.8 ± 1.3 µM, Post-FA Exp: 6.3 ± 2.2 µM; P = 0.047) while XO, PC, and CRP were unchanged by FA exposure (P > 0.05). These initial data suggest a short FA exposure can adversely alter vascular function and oxidative stress, influencing cardiovascular health.NEW & NOTEWORTHY This study was the first to investigate the implications of acute formaldehyde (FA) exposure on adult female vascular function in the arms and legs. The main findings of this study were a decrease in conduit vessel function without any alteration to microvascular function following a 90-min FA exposure. Additionally, the oxidative stress marker malondialdehyde increased after FA exposure. Taken together, these results suggest acute FA exposure have deleterious implications for the vasculature and redox balance.Listen to this article's corresponding podcast at https://ajpheart.podbean.com/e/formaldehyde-exposure-decreases-vascular-function/.
Collapse
Affiliation(s)
- Marc Augenreich
- Department of Health & Exercise Science, Appalachian State University, Boone, North Carolina
| | - Jonathon Stickford
- Department of Health & Exercise Science, Appalachian State University, Boone, North Carolina
| | - Nina Stute
- Department of Health & Exercise Science, Appalachian State University, Boone, North Carolina
| | - Laurel Koontz
- Department of Health & Exercise Science, Appalachian State University, Boone, North Carolina
| | - Janet Cope
- Department of Physical Therapy Education, Elon University School of Health Sciences, Elon, North Carolina
| | - Cynthia Bennett
- Department of Physician Assistant Studies, Elon University School of Health Sciences, Elon, North Carolina
| | - Stephen M Ratchford
- Department of Health & Exercise Science, Appalachian State University, Boone, North Carolina
| |
Collapse
|
17
|
do Valle Wuo A, Klein S, de Almeida P, Marcos RL, de Souza Setubal Destro MF, de Fátma DT, Horliana ACRT, Lino-Dos-Santos-Franco A. Prenatal programming of the immune response induced by maternal periodontitis: Effects on the development of acute lung injury in rat pups. Life Sci 2020; 260:118309. [PMID: 32841664 DOI: 10.1016/j.lfs.2020.118309] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 08/10/2020] [Accepted: 08/18/2020] [Indexed: 10/23/2022]
Abstract
AIMS Oral cavity pathogens play an important systemic role, modulating the development of several diseases. Periodontitis is a very common oral disease associated with dental biofilm. It is characterized by gum inflammation, periodontal ligament degeneration, dental cementum and alveolar bone loss. Studies point to the association between maternal periodontitis and adverse outcomes during pregnancy. However, they did not evaluate the impact of maternal periodontitis in the offspring. Thus, our objective was to investigate the effects of maternal periodontitis in the immune system of offspring. MATERIAL AND METHODS For this evaluation we induced acute lung injury in rat pups. Pregnant rats were submitted or not to periodontitis by ligature technique. Thirty days after the birth, offspring was submitted to acute lung inflammation by administration of lipopolysaccharide (LPS, Salmonella abortus equi, 5 mg/kg, ip). KEY FINDINGS Our results showed that maternal periodontitis increased myeloperoxidase activity, the levels of TNF-alpha and IL-17A in the bronchoalveolar fluid, the gene expression of TNF-alpha, IL-17A, and cyclooxygenases 1 and 2. In addition, maternal periodontitis did not alter the number of leukocytes migrated into the lung, tracheal responsiveness, expression of TLR4 and NF-KB translocation. SIGNIFICANCE This study showed prenatal programming of the immune response induced by maternal periodontitis, and reinforces the importance of oral health care during pregnancy.
Collapse
Affiliation(s)
- Alexandre do Valle Wuo
- Post Graduate Program in Biophotonics Applied to Health Sciences, University Nove de Julho (UNINOVE), São Paulo, Brazil
| | - Simone Klein
- Post Graduate Program in Biophotonics Applied to Health Sciences, University Nove de Julho (UNINOVE), São Paulo, Brazil
| | - Patrícia de Almeida
- Post Graduate Program in Biophotonics Applied to Health Sciences, University Nove de Julho (UNINOVE), São Paulo, Brazil
| | - Rodrigo Labat Marcos
- Post Graduate Program in Biophotonics Applied to Health Sciences, University Nove de Julho (UNINOVE), São Paulo, Brazil
| | | | - Daniela Teixeira de Fátma
- Post Graduate Program in Biophotonics Applied to Health Sciences, University Nove de Julho (UNINOVE), São Paulo, Brazil
| | | | - Adriana Lino-Dos-Santos-Franco
- Post Graduate Program in Biophotonics Applied to Health Sciences, University Nove de Julho (UNINOVE), São Paulo, Brazil.
| |
Collapse
|
18
|
Villadiego-Molinares MM, Ramírez-Martínez JA, Rodriguez-Pulido AI. Formaldehído en ambientes laborales: revisión de la literatura y propuesta de vigilancia ocupacional. REVISTA DE LA FACULTAD DE MEDICINA 2020. [DOI: 10.15446/revfacmed.v68n3.73188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Introducción. El formaldehído es una sustancia ampliamente usada a nivel industrial; sin embargo, es considerada un agente mutagénico y carcinógeno para los humanos. Para determinar el grado de riesgo de los trabajadores ocupacionalmente expuestos (TOE) al formaldehído, debe hacerse un seguimiento de sus niveles de concentración ambiental y de los biomarcadores que permiten identificar su daño potencial para la salud. En Colombia, lamentablemente, no existen lineamientos respecto a la exposición ocupacional a esta sustancia.Objetivo.Revisar estudios recientes sobre exposición ocupacional a formaldehído para diseñar una estrategia de seguimiento y vigilancia de los TOE a esta sustancia en Colombia.Materiales y métodos. Se realizó una revisión de la literatura en PubMed, MedLine, ScienceDirect y Embase mediante la siguiente estrategia de búsqueda: artículos sobre exposición ocupacional a formaldehído publicados en inglés o español entre 2013 y 2017. Los términos de búsqueda fueron “occupational exposure”, “formaldehyde” “mutagenicity test” y “DNA adducts” y sus equivalentes en español.Resultados. La búsqueda inicial arrojó 103 registros, sin embargo solo 36 artículos cumplieron los criterios de inclusión establecidos.Conclusiones. La gestión adecuada del riesgo derivado de la exposición ocupacional a formaldehido, así como el seguimiento médico apropiado de estos trabajadores, requiere la implementación de una serie de acciones interdisciplinarias que permitan la creación de un sistema de vigilancia ocupacional integral de los TOE a esta sustancia.
Collapse
|
19
|
Akkoc RF, Ogeturk M, Aydin S, Kuloglu T, Aydin S. Effects of carnosine on apoptosis, transient receptor potential melastatin 2, and betatrophin in rats exposed to formaldehyde. Biotech Histochem 2020; 96:223-229. [PMID: 32580587 DOI: 10.1080/10520295.2020.1783571] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
Abstract
We investigated the effects of exposure to formaldehyde on transient receptor potential melastatin 2, betatrophin, total oxidant status and total antioxidant status in rat liver and kidney tissues. We also investigated the effects of carnosine on formaldehyde treated animals. We used 28 male rats divided ramdomly into four groups of seven: untreated control group, carnosine treated group, formaldehyde treated group and formaldehyde + carnosine group. The experiment lasted for four weeks. Betatrophin levels in samples were measured uing the enzyme-linked immunosorbent assay, and total oxidant status and total antioxidant status were measured using REL assay diagnostic kits. We detected betatrophin and transient receptor potential melastatin 2 immunoreactivity using immunohistochemistry and assessed apoptosis using terminal deoxynucleotidyl transferase dUTP nick end labeling. The betatrophin and total antioxidant status levels decreased in kidney, liver and plasma following exposure to formaldehyde, while total oxidant status and terminal deoxynucleotidyl transferase dUTP nick end labeling positivity increased. Carnosine supplementation reversed histopathology and biochemical damage caused by formaldehyde. We suggest that carnosine treatment may be useful for protecting persons exposed to formaldehyde.
Collapse
Affiliation(s)
- R F Akkoc
- Department of Anatomy, Medical School, Firat University, Elazig, Turkey
| | - M Ogeturk
- Department of Anatomy, Medical School, Firat University, Elazig, Turkey
| | - S Aydin
- Department of Anatomy, Medical School, Firat University, Elazig, Turkey.,Department of Cardiovascular Surgery, Elazig Fethi Sekin City Hospital, Health Science University, Elazig, Turkey
| | - T Kuloglu
- Department of Histology and Embryology, Medical School, Firat University, Elazig, Turkey
| | - S Aydin
- Department of Medical Biochemistry, Medical School, Firat University, Elazig, Turkey
| |
Collapse
|
20
|
Wang F, Wang R, Liu H. The acute pulmonary toxicity in mice induced by Staphylococcus aureus, particulate matter, and their combination. Exp Anim 2018; 68:159-168. [PMID: 30531117 PMCID: PMC6511515 DOI: 10.1538/expanim.18-0102] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Inhalation of pathogenic bacteria transported by particulate matter (PM) presents an
important potential threat to human health. Therefore, the pulmonary toxicity in mice
caused by Staphylococcus aureus (S. aureus) and PM as
individual matter and mixtures was studied. PM and S. aureus were
instilled intratracheally into Kunming mice at doses of 0.2 mg/mouse and 5.08 ×
106 CFU /mouse, respectively, as individual matter and in combination two
times at 5-day intervals. After the exposure period, oxidative stress markers and nitric
oxide (NO) in the lung, cellular infiltration, neurotrophins, chemokines, and cytokines in
bronchoalveolar lavage fluid (BALF), and immunoglobulin (Ig) in sera were examined.
Exposure to the combination of PM and S. aureus caused significant
increases in malondialdehyde (MDA), catalase (CAT), superoxide dismutase (SOD), and NO and
significant decreases in total antioxidant capacity (T-AOC) and the ratio of reduced
glutathione (GSH) to oxidized glutathione (GSSG) in the lung. Meanwhile, the ratio of
interleukin (IL)-4 to interferon (INF)-γ, the IL-4 level in BALF, and the IgE
concentration in sera were significantly increased in the groups exposed to
S. aureus or the combination of PM and
S. aureus. Substance P and IL-8 in BALF were
significantly increased in mice exposed to PM, S. aureus or their
combination. In addition, PM, S. aureus, and their combination caused
infiltration of leukocytes into the alveolar tissue spaces. The results suggested that
exposure to the combination of PM and S. aureus induced a lung
inflammatory response that was at least partly caused by oxidative stress and mediators
from the activated eosinophils, neutrophils, alveolar macrophages, and epithelial
cells.
Collapse
Affiliation(s)
- Fan Wang
- School of Biological Science, Luoyang Normal University, No. 6 Jinqing Road, Yinbin District, Luoyang 471934, P.R. China.,Cold Water Fish Breeding Engineering Technology Research Center of Henan Province, No. 6 Jinqing Road, Yinbin District, Luoyang 471934, P.R. China
| | - Ruiling Wang
- School of Biological Science, Luoyang Normal University, No. 6 Jinqing Road, Yinbin District, Luoyang 471934, P.R. China
| | - Haifang Liu
- School of Energy and Environment Engineering, Zhongyuan University of Technology, No. 41 Zhongyuanzhong Road, Zhongyuan District, Zhengzhou 450007, P.R. China
| |
Collapse
|
21
|
Biomonitoring of workers using nuclear magnetic resonance-based metabolomics of exhaled breath condensate: A pilot study. Toxicol Lett 2018; 298:4-12. [DOI: 10.1016/j.toxlet.2018.10.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 09/27/2018] [Accepted: 10/16/2018] [Indexed: 12/17/2022]
|
22
|
Liu QP, Zhou DX, Lv MQ, Ge P, Li YX, Wang SJ. Formaldehyde inhalation triggers autophagy in rat lung tissues. Toxicol Ind Health 2018; 34:748233718796347. [PMID: 30360701 DOI: 10.1177/0748233718796347] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Formaldehyde (FA), a ubiquitous environmental contaminant, has long been suspected of causing lung injury. However, the molecular and cellular mechanisms underlying this phenomenon remain elusive. The aim of this study was to elucidate the role of autophagy in lung injury induced by FA inhalation. In this study, lung weight coefficient, interleukin 8 in bronchoalveolar fluid, and histopathological examination were used to evaluate the lung injury. Moreover, electron microscopy, Western blotting for the ratio of LC3-II/LC3-I were used to detect autophagy in lung tissues. Our results indicated that the lung toxicity of FA inhalation is dose dependent. Lung weight coefficient, inflammatory response, and histopathological structure in the 0.5 mg/m3 FA exposure group showed no obvious changes compared with the control. However, exposure to 5 and 10 mg/m3 FA produced lung injury including pulmonary edema, histological changes, and inflammatory responses. Furthermore, the alterations of autophagy correlated with lung injury. Taken together, these data indicate that FA exposure triggers autophagy of alveolar epithelial cells, which might play a pivotal role in lung injury.
Collapse
Affiliation(s)
- Qiu-Ping Liu
- 1 Department of Pathology, Medical School, Xi'an Jiaotong University, Xi'an, China
- 2 Third Ward of VIP, 323 Hospital of PLA, Xi'an, China
| | - Dang-Xia Zhou
- 1 Department of Pathology, Medical School, Xi'an Jiaotong University, Xi'an, China
- 3 Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, China
| | - Mo-Qi Lv
- 1 Department of Pathology, Medical School, Xi'an Jiaotong University, Xi'an, China
- 3 Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, China
| | - Pan Ge
- 1 Department of Pathology, Medical School, Xi'an Jiaotong University, Xi'an, China
| | - Yi-Xin Li
- 1 Department of Pathology, Medical School, Xi'an Jiaotong University, Xi'an, China
| | - Shi-Jie Wang
- 1 Department of Pathology, Medical School, Xi'an Jiaotong University, Xi'an, China
| |
Collapse
|
23
|
Zhang X, Zhao Y, Song J, Yang X, Zhang J, Zhang Y, Li R. Responses to Comments on "Differential Health Effects of Constant and Intermittent Exposure to Formaldehyde in Mice: Implications for Building Ventilation Strategies". ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:3322-3324. [PMID: 29473741 DOI: 10.1021/acs.est.8b00844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
|
24
|
Yoshizaki K, Brito JM, Silva LF, Lino-Dos-Santos-Franco A, Frias DP, E Silva RCR, Amato-Lourenço LF, Saldiva PHN, de Fátima Lopes Calvo Tibério I, Mauad T, Macchione M. The effects of particulate matter on inflammation of respiratory system: Differences between male and female. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 586:284-295. [PMID: 28174048 DOI: 10.1016/j.scitotenv.2017.01.221] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Revised: 01/10/2017] [Accepted: 01/31/2017] [Indexed: 05/20/2023]
Abstract
Air pollution is known to exacerbate respiratory diseases and epidemiological studies have shown that women present more chronic respiratory symptoms than man exposed to traffic pollution, however, the reason why is unclear. This study evaluated the inflammatory differences in BALB/c mouse males (n=34) and females (n=111) in three phases of the estrous cycle that were exposed to ambient air (AA) or concentrated ambient particles (CAPs). Tracheal hyperreactivity to methacholine, bronchoalveolar lavage fluid (BALF) and immunohistochemical of airways and lung parenchyma were studied. Hyperreactivity increased in CAPs-exposed female mice compared with AA-exposed mice in estrus (p<0.05) and proestrus phases (p<0.05) and decreased in CAPs-exposed males compared with those exposed to AA (p<0.05). Males had increased numbers of total cells (p=0.037) and macrophages (p=0.028) compared to females. BALF levels of cyclooxygenase-2(COX-2) (p=0.000), transforming growth factor alpha (TGF-α) (p=0.001) and IL-8 receptor alpha (IL-8Rα) (p=0.014) were increased in males compared with proestrus, estrus and diestrus females, independent of exposure. Proestrus females exhibited significantly higher cadherin expression in lung parenchyma than did males (p=0.005). CAPs exposure increased matrix metalloproteinase-9 (MMP-9) (p=0.024) and isoprostane (p=0.003) expression in the airways of both, males and females. The level of substance P (SP) (p=0.001) increased in lung parenchyma in males compared with females, while IL-17 levels in airways (p=0.042) and in lung parenchyma (p=0.008) increased in females. MMP-9 levels (p=0.024) were significantly lower in the lung parenchyma of CAPs-exposed females. TGF-α (p=0.007) levels increased in the lung parenchyma of CAPs-exposed females compared to AA-exposed females. These results suggest that inflammatory markers differentially expressed in male mice were mostly linked to acute inflammation (IL-1β, IL-8Rα, COX-2), whereas in females, markers that may lead to a chronic inflammatory process such as IL-17 and remodeling (MMP-9) were increased.
Collapse
Affiliation(s)
- Kelly Yoshizaki
- Department of Pathology, Experimental Air Pollution Laboratory, LIM05 - School of Medicine, University of Sao Paulo, Sao Paulo, Sao Paulo, Brazil.
| | - Jôse Mára Brito
- Department of Pathology, Experimental Air Pollution Laboratory, LIM05 - School of Medicine, University of Sao Paulo, Sao Paulo, Sao Paulo, Brazil.
| | - Luiz Fernando Silva
- Department of Pathology, Experimental Air Pollution Laboratory, LIM05 - School of Medicine, University of Sao Paulo, Sao Paulo, Sao Paulo, Brazil.
| | - Adriana Lino-Dos-Santos-Franco
- Post Graduate Program in Biophotonics Applied to Health Sciences, University Nove de Julho (UNINOVE), Sao Paulo, Sao Paulo, Brazil.
| | - Daniela Perroni Frias
- Department of Pathology, Experimental Air Pollution Laboratory, LIM05 - School of Medicine, University of Sao Paulo, Sao Paulo, Sao Paulo, Brazil.
| | | | - Luís Fernando Amato-Lourenço
- Department of Pathology, Experimental Air Pollution Laboratory, LIM05 - School of Medicine, University of Sao Paulo, Sao Paulo, Sao Paulo, Brazil.
| | - Paulo Hilário Nascimento Saldiva
- Department of Pathology, Experimental Air Pollution Laboratory, LIM05 - School of Medicine, University of Sao Paulo, Sao Paulo, Sao Paulo, Brazil.
| | | | - Thais Mauad
- Department of Pathology, Experimental Air Pollution Laboratory, LIM05 - School of Medicine, University of Sao Paulo, Sao Paulo, Sao Paulo, Brazil.
| | - Mariangela Macchione
- Department of Pathology, Experimental Air Pollution Laboratory, LIM05 - School of Medicine, University of Sao Paulo, Sao Paulo, Sao Paulo, Brazil.
| |
Collapse
|
25
|
Xu M, Tang H, Rong Q, Zhang Y, Li Y, Zhao L, Ye G, Shi F, Lv C. The Effects of Formaldehyde on Cytochrome P450 Isoform Activity in Rats. BIOMED RESEARCH INTERNATIONAL 2017; 2017:6525474. [PMID: 28555194 PMCID: PMC5438837 DOI: 10.1155/2017/6525474] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Revised: 02/01/2017] [Accepted: 02/12/2017] [Indexed: 12/28/2022]
Abstract
Formaldehyde (FA) is an occupational and indoor pollutant. Long-term exposure to FA can irritate the respiratory mucosa, with potential carcinogenic effects on the airways. The effects of acute FA poisoning on the activities of CYP450 isoforms CYP1A2, CYP2C11, CYP2E1, and CYP3A2 were assessed by determining changes in the pharmacokinetic parameters of the probe drugs phenacetin, tolbutamide, chlorzoxazone, and testosterone, respectively. Rats were randomly divided into three groups: control, low FA dose (exposure to 110 ppm for 2 h for 3 days), and high FA dose (exposure to 220 ppm for 2 h for 3 days). A mixture of the four probe drugs was injected into rats and blood samples were taken at a series of time points. Plasma concentrations of the probe drugs were measured by HPLC. The pharmacokinetic parameters t1/2, AUC(0-t), and Cmax of tolbutamide, chlorzoxazone, and testosterone increased significantly in the high dose versus control group (P < 0.05), whereas the CL of chlorzoxazone and testosterone decreased significantly (P < 0.05). However, t1/2, AUC(0-t), and Cmax of phenacetin decreased significantly (P < 0.05), whereas the CL of phenacetin increased significantly (P < 0.05) compared to controls. Thus, acute FA poisoning suppressed the activities of CYP2C11, CYP2E1, and CYP3A2 and induced the activity of CYP1A2 in rats. And the change of CYP450 activity caused by acute FA poisoning may be associated with FA potential carcinogenic effects on the airways.
Collapse
Affiliation(s)
- Min Xu
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
| | - Huaqiao Tang
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
| | - Qian Rong
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
| | - Yuanli Zhang
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
| | - Yinglun Li
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
| | - Ling Zhao
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
| | - Gang Ye
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
| | - Fei Shi
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
| | - Cheng Lv
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
| |
Collapse
|
26
|
Ramos CDO, Nardeli CR, Campos KKD, Pena KB, Machado DF, Bandeira ACB, Costa GDP, Talvani A, Bezerra FS. The exposure to formaldehyde causes renal dysfunction, inflammation and redox imbalance in rats. ACTA ACUST UNITED AC 2017; 69:367-372. [PMID: 28336174 DOI: 10.1016/j.etp.2017.02.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 02/10/2017] [Accepted: 02/23/2017] [Indexed: 12/14/2022]
Abstract
Twenty-eight Fischer male rats were divided into four groups: control group (CG), exposed to the ambient air, and groups exposed to formaldehyde (FA) at concentrations of 1% (FA1%), 5% (FA5%) and 10% (FA10%). Kidney function was assessed by dosage of uric acid, creatinine and urea. Morphometry was performed on the thickness of the lumen of Bowman's capsule and diameter of the lumen of the renal tubules. We evaluated the redox imbalance through the catalase and superoxide dismutase activity as well as oxidative damage by lipid peroxidation. Inflammatory chemokines CCL2, CCL3 and CCL5 were analyzed by enzyme immunoassays. There was an increase in the concentration of urea in FA10% compared with CG and FA1%. The levels of creatinine, renal lumen and lipid peroxidation increased in all FA-treated groups compared with CG. The concentration of uric acid in FA10% was lower compared with all other groups. There was an increase in the space of Bowman's capsule in FA5% and FA10% compared with CG and FA1%. However, the superoxide dismutase activity was higher in FA5% compared with other groups while CCL5 was higher in FA1% compared with CG. The exposure to formaldehyde in a short period of time leads to changes in the kidney function, inflammation and morphology, as well as promoted the increase of superoxide dismutase activity and oxidative damage.
Collapse
Affiliation(s)
- Camila de Oliveira Ramos
- Laboratory of Experimental Pathophysiology (LAFEx), Department of Biological Sciences (DECBI), Center of Research in Biological Sciences (NUPEB), Federal University of Ouro Preto (UFOP), Ouro Preto, MG, Brazil
| | - Clarissa Rodrigues Nardeli
- Laboratory of Experimental Pathophysiology (LAFEx), Department of Biological Sciences (DECBI), Center of Research in Biological Sciences (NUPEB), Federal University of Ouro Preto (UFOP), Ouro Preto, MG, Brazil
| | - Keila Karine Duarte Campos
- Laboratory of Experimental Pathophysiology (LAFEx), Department of Biological Sciences (DECBI), Center of Research in Biological Sciences (NUPEB), Federal University of Ouro Preto (UFOP), Ouro Preto, MG, Brazil
| | - Karina Braga Pena
- Laboratory of Experimental Pathophysiology (LAFEx), Department of Biological Sciences (DECBI), Center of Research in Biological Sciences (NUPEB), Federal University of Ouro Preto (UFOP), Ouro Preto, MG, Brazil
| | - Dafne Fernandes Machado
- Laboratory of Experimental Pathophysiology (LAFEx), Department of Biological Sciences (DECBI), Center of Research in Biological Sciences (NUPEB), Federal University of Ouro Preto (UFOP), Ouro Preto, MG, Brazil
| | - Ana Carla Balthar Bandeira
- Laboratory of Metabolic Biochemistry (LBM), Department of Biological Sciences (DECBI), Center of Research in Biological Sciences (NUPEB), Federal University of Ouro Preto (UFOP), Ouro Preto, MG, Brazil
| | - Guilherme de Paula Costa
- Laboratory of Immunobiology of Inflammation (LABIIN), Department of Biological Sciences (DECBI), Center of Research in Biological Sciences (NUPEB), Federal University of Ouro Preto (UFOP), Ouro Preto, MG, Brazil
| | - André Talvani
- Laboratory of Immunobiology of Inflammation (LABIIN), Department of Biological Sciences (DECBI), Center of Research in Biological Sciences (NUPEB), Federal University of Ouro Preto (UFOP), Ouro Preto, MG, Brazil
| | - Frank Silva Bezerra
- Laboratory of Experimental Pathophysiology (LAFEx), Department of Biological Sciences (DECBI), Center of Research in Biological Sciences (NUPEB), Federal University of Ouro Preto (UFOP), Ouro Preto, MG, Brazil.
| |
Collapse
|
27
|
Coexistence of obesity and asthma determines a distinct respiratory metabolic phenotype. J Allergy Clin Immunol 2016; 139:1536-1547.e5. [PMID: 27746236 DOI: 10.1016/j.jaci.2016.08.038] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Revised: 07/23/2016] [Accepted: 08/09/2016] [Indexed: 12/13/2022]
Abstract
BACKGROUND Epidemiologic and clinical evidence supports the existence of an obesity-related asthma phenotype. No distinct pathophysiologic elements or specific biomarkers have been identified thus far, but increased oxidative stress has been reported. OBJECTIVE We aimed at verifying whether metabolomics of exhaled breath condensate from obese asthmatic (OA) patients, lean asthmatic (LA) patients, and obese nonasthmatic (ONA) subjects could recognize specific and statistically validated biomarkers for a separate "asthma-obesity" respiratory metabolic phenotype, here defined as "metabotype." METHODS Twenty-five OA patients, 30 ONA subjects, and 30 mild-to-moderate LA age-matched patients participated in a cross-sectional study. Nuclear magnetic resonance (NMR) profiles were analyzed by using partial least-squares discriminant analysis, and the results were validated with an independent patient set. RESULTS From NMR profiles, we obtained strong regression models that distinguished OA patients from ONA subjects (quality parameters: goodness-of-fit parameter [R2] = 0.81 and goodness-of-prediction parameter [Q2] = 0.79), as well as OA patients from LA patients (R2 = 0.91 and Q2 = 0.89). The all-classes comparison (R2 = 0.86 and Q2 = 0.83) indicated that OA patients possess a respiratory metabolic profile fully divergent from those obtained in the other patient groups. We also identified specific biomarkers for between-class separation, which are independent from clinical bias. They are involved in the methane, pyruvate, and glyoxylate and dicarboxylate metabolic pathways. CONCLUSIONS NMR-based metabolomics indicates that OA patients are characterized by a respiratory metabolic fingerprint fully different from that of patients independently affected by asthma or obesity. Such a phenotypic difference strongly suggests unique pathophysiologic pathways involved in the pathogenesis of asthma in adult obese subjects. Furthermore, the OA metabotype could define a strategy for patient stratification based on unbiased biomarkers, with important diagnostic and therapeutic implications.
Collapse
|
28
|
Jude J, Koziol-White C, Scala J, Yoo E, Jester W, Maute C, Dalton P, Panettieri R. Formaldehyde Induces Rho-Associated Kinase Activity to Evoke Airway Hyperresponsiveness. Am J Respir Cell Mol Biol 2016; 55:542-553. [PMID: 27149505 DOI: 10.1165/rcmb.2015-0254oc] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Formaldehyde, a common indoor air pollutant, exacerbates asthma and synergizes with allergen to induce airway hyperresponsiveness (AHR) in animal models. The mechanisms mediating formaldehyde-induced AHR remain poorly understood. We posit that formaldehyde modulates agonist-induced contractile response of human airway smooth muscle (HASM) cells to elicit AHR. HASM cells were exposed to formaldehyde or vehicle and agonist-induced intracellular Ca2+ ([Ca2+]i) and myosin light-chain phosphatase (MYPT1) phosphorylation were determined. Air-liquid interface-differentiated human bronchial epithelial (HBE) cells were exposed to formaldehyde or vehicle and cocultured with HASM cells. Agonist-induced [Ca2+]i and MYPT1 phosphorylation were determined in the cocultured HASM cells. Precision-cut human lung slices were exposed to PBS or varying concentrations of formaldehyde, and then carbachol-induced airway narrowing was determined 24 hours after exposure. HASM cells were transfected with nontargeting or nuclear factor erythroid-derived 2, like 2 (Nrf-2)-targeting small interfering RNA and exposed to formaldehyde or vehicle, followed by determination of antioxidant response (quinone oxido-reductase 1 and thioredoxin 1) and basal and agonist-induced MYPT1 phosphorylation. Formaldehyde enhanced the basal Rho-kinase activity and MYPT1 phosphorylation with little effect on agonist-induced [Ca2+]i in HASM cells. Formaldehyde induced Nrf-2-dependent antioxidant response in HASM cells, although the MYPT1 phosphorylation was independent of Nrf-2 induction. Although HBE cells exposed to formaldehyde had little effect on agonist-induced [Ca2+]i or MYPT1 phosphorylation in cocultured HASM cells, formaldehyde enhanced carbachol-induced airway responsiveness in precision-cut human lung slices. In conclusion, formaldehyde induces phosphorylation of the regulatory subunit of MYPT1, independent of formaldehyde-induced Nrf-2 activation in HASM cells. The findings suggest that the Rho kinase-dependent Ca2+ sensitization pathway plays a role in formaldehyde-induced AHR.
Collapse
Affiliation(s)
- Joseph Jude
- 1 Rutgers Institute for Translational Medicine & Science, Child Health Institute of New Jersey, Rutgers, The State University of New Jersey, New Brunswick, New Jersey; and
| | - Cynthia Koziol-White
- 1 Rutgers Institute for Translational Medicine & Science, Child Health Institute of New Jersey, Rutgers, The State University of New Jersey, New Brunswick, New Jersey; and
| | - Jacqueline Scala
- 1 Rutgers Institute for Translational Medicine & Science, Child Health Institute of New Jersey, Rutgers, The State University of New Jersey, New Brunswick, New Jersey; and
| | - Edwin Yoo
- 1 Rutgers Institute for Translational Medicine & Science, Child Health Institute of New Jersey, Rutgers, The State University of New Jersey, New Brunswick, New Jersey; and
| | - William Jester
- 1 Rutgers Institute for Translational Medicine & Science, Child Health Institute of New Jersey, Rutgers, The State University of New Jersey, New Brunswick, New Jersey; and
| | | | - Pamela Dalton
- 2 Monell Chemical Senses Center, Philadelphia, Pennsylvania
| | - Reynold Panettieri
- 1 Rutgers Institute for Translational Medicine & Science, Child Health Institute of New Jersey, Rutgers, The State University of New Jersey, New Brunswick, New Jersey; and
| |
Collapse
|
29
|
Wei C, Wen H, Yuan L, McHale CM, Li H, Wang K, Yuan J, Yang X, Zhang L. Formaldehyde induces toxicity in mouse bone marrow and hematopoietic stem/progenitor cells and enhances benzene-induced adverse effects. Arch Toxicol 2016; 91:921-933. [PMID: 27339418 DOI: 10.1007/s00204-016-1760-5] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Accepted: 06/13/2016] [Indexed: 12/13/2022]
Abstract
FA in air for 2 weeks, mimicking occupational exposure, then measured complete blood counts, nucleated BM cell count, and myeloid progenitor colony formation. We also investigated potential mechanisms of FA toxicity, including reactive oxygen species (ROS) generation, apoptosis, and hematopoietic growth factor and receptor levels. FA exposure significantly reduced nucleated BM cells and BM-derived colony-forming unit-granulocyte-macrophage (CFU-GM) and burst-forming unit-erythroid (BFU-E); down-regulated GM-CSFRα and EPOR expression; increased ROS in nucleated BM, spleen and CFU-GM cells; and increased apoptosis in nucleated spleen and CFU-GM cells. FA and BZ each similarly altered BM mature cells and stem/progenitor counts, BM and CFU-GM ROS, and apoptosis in spleen and CFU-GM but had differential effects on other end points. Co-exposure was more potent for several end points. Thus, FA is toxic to the mouse hematopoietic system, including BM stem/progenitor cells, and it enhances BZ-induced toxic effects. Our findings suggest that FA may induce BM toxicity by affecting myeloid progenitor growth and survival through oxidative damage and reduced expression levels of GM-CSFRα and EPOR.
Collapse
Affiliation(s)
- Chenxi Wei
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, College of Life Sciences, Central China Normal University, Wuhan, 430079, Hubei, China.,Key Laboratory of Ecological Safety Monitoring and Evaluation, College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China
| | - Huaxiao Wen
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, College of Life Sciences, Central China Normal University, Wuhan, 430079, Hubei, China
| | - Langyue Yuan
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, College of Life Sciences, Central China Normal University, Wuhan, 430079, Hubei, China
| | - Cliona M McHale
- Division of Environmental Health Sciences, School of Public Health, University of California, Berkeley, CA, 94720, USA
| | - Hui Li
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, College of Life Sciences, Central China Normal University, Wuhan, 430079, Hubei, China
| | - Kun Wang
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, College of Life Sciences, Central China Normal University, Wuhan, 430079, Hubei, China.,Division of Biostatistics, Department of Population Health, School of Medicine, New York University, New York, NY, USA
| | - Junlin Yuan
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, College of Life Sciences, Central China Normal University, Wuhan, 430079, Hubei, China
| | - Xu Yang
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, College of Life Sciences, Central China Normal University, Wuhan, 430079, Hubei, China.
| | - Luoping Zhang
- Division of Environmental Health Sciences, School of Public Health, University of California, Berkeley, CA, 94720, USA.
| |
Collapse
|
30
|
Beneficial effects of vitamin C treatment on pregnant rats exposed to formaldehyde: Reversal of immunosuppression in the offspring. Toxicol Appl Pharmacol 2016; 300:77-81. [DOI: 10.1016/j.taap.2016.03.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Revised: 02/25/2016] [Accepted: 03/21/2016] [Indexed: 01/15/2023]
|
31
|
Photobiomodulation Therapy Decreases Oxidative Stress in the Lung Tissue after Formaldehyde Exposure: Role of Oxidant/Antioxidant Enzymes. Mediators Inflamm 2016; 2016:9303126. [PMID: 27293324 PMCID: PMC4886066 DOI: 10.1155/2016/9303126] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Revised: 04/28/2016] [Accepted: 05/04/2016] [Indexed: 01/10/2023] Open
Abstract
Formaldehyde is ubiquitous pollutant that induces oxidative stress in the lung. Several lung diseases have been associated with oxidative stress and their control is necessary. Photobiomodulation therapy (PBMT) has been highlighted as a promissory treatment, but its mechanisms need to be better investigated. Our objective was to evaluate the effects of PBMT on the oxidative stress generated by FA exposure. Male Wistar rats were submitted to FA exposure of 1% or vehicle (3 days) and treated or not with PBMT (1 and 5 h after each FA exposure). Rats treated only with laser were used as control. Twenty-four hours after the last FA exposure, we analyzed the effects of PBMT on the generation of nitrites and hydrogen peroxide, oxidative burst, glutathione reductase, peroxidase, S-transferase enzyme activities, the gene expression of nitric oxide, cyclooxygenase, superoxide dismutase, the catalase enzyme, and heme oxygenase-1. PBMT reduced the generation of nitrites and hydrogen peroxide and increased oxidative burst in the lung cells. A decreased level of oxidant enzymes was observed which were concomitantly related to an increased level of antioxidants. This study provides new information about the antioxidant mechanisms of PBMT in the lung and might constitute an important tool for lung disease treatment.
Collapse
|
32
|
Murta GL, Campos KKD, Bandeira ACB, Diniz MF, Costa GDP, Costa DC, Talvani A, Lima WG, Bezerra FS. Oxidative effects on lung inflammatory response in rats exposed to different concentrations of formaldehyde. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2016; 211:206-213. [PMID: 26774767 DOI: 10.1016/j.envpol.2015.12.054] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Revised: 12/22/2015] [Accepted: 12/23/2015] [Indexed: 06/05/2023]
Abstract
The formaldehyde (FA) is a crosslinking agent that reacts with cellular macromolecules such as proteins, nucleic acids and molecules with low molecular weight such as amino acids, and it has been linked to inflammatory processes and oxidative stress. This study aimed to analyze the oxidative effects on pulmonary inflammatory response in Fischer rats exposed to different concentrations of FA. Twenty-eight Fischer rats were divided into 4 groups (N = 7). The control group (CG) was exposed to ambient air and three groups were exposed to different concentrations of FA: 1% (FA1%), 5% (FA5%) and 10% (FA10%). In the Bronchoalveolar Lavage Fluid (BALF), the exposure to a concentration of 10% promoted the increase of inflammatory cells compared to CG. There was also an increase of macrophages and lymphocytes in FA10% and lymphocytes in FA5% compared to CG. The activity of NADPH oxidase in the blood had been higher in FA5% and FA10% compared to CG. The activity of superoxide dismutase enzyme (SOD) had an increase in FA5% and the activity of the catalase enzyme (CAT) showed an increase in FA1% compared to CG. As for the glutathione system, there was an increase in total glutathione (tGSH), reduced glutathione (GSH) and oxidized glutathione (GSSG) in FA5% compared to CG. The reduced/oxidized glutathione ratio (GSH/GSSG) had a decrease in FA5% compared to CG. There was an increase in lipid peroxidation compared to all groups and the protein carbonyl formation in FA10% compared to CG. We also observed an increase in CCL2 and CCL5 chemokines in the treatment groups compared to CG and in serum there was an increase in CCL2, CCL3 and CCL5 compared to CG. Our results point out to the potential of formaldehyde in promoting airway injury by increasing the inflammatory process as well as by the redox imbalance.
Collapse
Affiliation(s)
- Giselle Luciane Murta
- Laboratory of Experimental Pathophysiology (LAFEx), Department of Biological Sciences (DECBI), Center of Research in Biological Sciences(NUPEB), Federal University of OuroPreto (UFOP), Ouro Preto, MG, Brazil
| | - Keila Karine Duarte Campos
- Laboratory of Experimental Pathophysiology (LAFEx), Department of Biological Sciences (DECBI), Center of Research in Biological Sciences(NUPEB), Federal University of OuroPreto (UFOP), Ouro Preto, MG, Brazil
| | - Ana Carla Balthar Bandeira
- Laboratory of Metabolic Biochemistry (LBM), Department of Biological Sciences (DECBI), Center of Research in Biological Sciences(NUPEB), Federal University of OuroPreto (UFOP), Ouro Preto, MG, Brazil
| | - Mirla Fiuza Diniz
- Laboratory of Morphopathology (LMP), Department of Biological Sciences (DECBI), Center of Research in Biological Sciences(NUPEB), Federal University of OuroPreto (UFOP), Ouro Preto, MG, Brazil
| | - Guilherme de Paula Costa
- Laboratory of Immunobiology of Inflammation (LABIIN), Department of Biological Sciences (DECBI), Center of Research in Biological Sciences(NUPEB), Federal University of OuroPreto (UFOP), Ouro Preto, MG, Brazil
| | - Daniela Caldeira Costa
- Laboratory of Metabolic Biochemistry (LBM), Department of Biological Sciences (DECBI), Center of Research in Biological Sciences(NUPEB), Federal University of OuroPreto (UFOP), Ouro Preto, MG, Brazil
| | - André Talvani
- Laboratory of Immunobiology of Inflammation (LABIIN), Department of Biological Sciences (DECBI), Center of Research in Biological Sciences(NUPEB), Federal University of OuroPreto (UFOP), Ouro Preto, MG, Brazil
| | - Wanderson Geraldo Lima
- Laboratory of Morphopathology (LMP), Department of Biological Sciences (DECBI), Center of Research in Biological Sciences(NUPEB), Federal University of OuroPreto (UFOP), Ouro Preto, MG, Brazil
| | - Frank Silva Bezerra
- Laboratory of Experimental Pathophysiology (LAFEx), Department of Biological Sciences (DECBI), Center of Research in Biological Sciences(NUPEB), Federal University of OuroPreto (UFOP), Ouro Preto, MG, Brazil.
| |
Collapse
|
33
|
Attenuated allergic inflammatory response in the lungs during lactation. Life Sci 2016; 151:281-287. [PMID: 26979776 DOI: 10.1016/j.lfs.2016.03.027] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Revised: 03/08/2016] [Accepted: 03/11/2016] [Indexed: 12/31/2022]
Abstract
AIMS To evaluate the influence of lactation on lung immune function during allergic inflammation. MAIN METHODS Female rats, 60-90days old, were divided into three groups: no lung allergy virgins (N group), ovalbumin (OVA)-immunized and sensitized virgins (V group), and OVA-immunized and sensitized lactating females (L group). On gestation day (GD) 10, all animals in L group received a subcutaneous injection of 0.1mg·kg(-1) OVA plus aluminum hydroxide. On GD17, the L group received a subcutaneous booster injection of 10μg OVA plus 10mg aluminum hydroxide. After 7days, an inhalatory challenge with 1% OVA was given in 15min sessions for 3 consecutive days. Animals from the V group received the same treatment, meaning both tests and time intervals between OVA treatment and inhalatory challenge were the same as in the L group. Twenty-four hours after the last inhalation session, the animals were euthanized, and the following tests were performed: total and differential bronchoalveolar lavage (BAL) and femoral marrow lavage (FML) leukocyte counts, quantification of tumor necrosis factor α (TNF-α) and interferon γ (IFN-γ) levels in BAL fluid, and quantification of plasma corticosterone and catecholamine levels. KEY FINDINGS The L group presented lower BAL total leukocyte counts and decreases in the number of eosinophils and macrophages compared with the V group. They also expressed higher BAL IFN-γ and lower plasma corticosterone levels. Plasma norepinephrine levels were higher in the L group than in the N and V groups. SIGNIFICANCE Lactating female rats presented less intense allergic lung inflammation. Our findings suggest that lactation may protect females from asthmatic crises.
Collapse
|
34
|
McElroy CS, Day BJ. Antioxidants as potential medical countermeasures for chemical warfare agents and toxic industrial chemicals. Biochem Pharmacol 2016; 100:1-11. [PMID: 26476351 PMCID: PMC4744107 DOI: 10.1016/j.bcp.2015.10.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Accepted: 10/01/2015] [Indexed: 12/18/2022]
Abstract
The continuing horrors of military conflicts and terrorism often involve the use of chemical warfare agents (CWAs) and toxic industrial chemicals (TICs). Many CWA and TIC exposures are difficult to treat due to the danger they pose to first responders and their rapid onset that can produce death shortly after exposure. While the specific mechanism(s) of toxicity of these agents are diverse, many are associated either directly or indirectly with increased oxidative stress in affected tissues. This has led to the exploration of various antioxidants as potential medical countermeasures for CWA/TIC exposures. Studies have been performed across a wide array of agents, model organisms, exposure systems, and antioxidants, looking at an almost equally diverse set of endpoints. Attempts at treating CWAs/TICs with antioxidants have met with mixed results, ranging from no effect to nearly complete protection. The aim of this commentary is to summarize the literature in each category for evidence of oxidative stress and antioxidant efficacy against CWAs and TICs. While there is great disparity in the data concerning methods, models, and remedies, the outlook on antioxidants as medical countermeasures for CWA/TIC management appears promising.
Collapse
Affiliation(s)
- Cameron S McElroy
- Department of Medicine, National Jewish Health, Denver, CO 80206, United States; Department of Pharmaceutical Sciences, University of Colorado Denver, Aurora, CO 80045, United States
| | - Brian J Day
- Department of Medicine, National Jewish Health, Denver, CO 80206, United States; Department of Medicine, University of Colorado Denver, Aurora, CO 80045, United States; Department of Immunology, University of Colorado Denver, Aurora, CO 80045, United States; Department of Environmental & Occupational Health Sciences, University of Colorado Denver, Aurora, CO 80045, United States; Department of Pharmaceutical Sciences, University of Colorado Denver, Aurora, CO 80045, United States.
| |
Collapse
|
35
|
Miranda da Silva C, Peres Leal M, Brochetti RA, Braga T, Vitoretti LB, Saraiva Câmara NO, Damazo AS, Ligeiro-de-Oliveira AP, Chavantes MC, Lino-dos-Santos-Franco A. Low Level Laser Therapy Reduces the Development of Lung Inflammation Induced by Formaldehyde Exposure. PLoS One 2015; 10:e0142816. [PMID: 26569396 PMCID: PMC4646654 DOI: 10.1371/journal.pone.0142816] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Accepted: 10/27/2015] [Indexed: 02/04/2023] Open
Abstract
Lung diseases constitute an important public health problem and its growing level of concern has led to efforts for the development of new therapies, particularly for the control of lung inflammation. Low Level Laser Therapy (LLLT) has been highlighted as a non-invasive therapy with few side effects, but its mechanisms need to be better understood and explored. Considering that pollution causes several harmful effects on human health, including lung inflammation, in this study, we have used formaldehyde (FA), an environmental and occupational pollutant, for the induction of neutrophilic lung inflammation. Our objective was to investigate the local and systemic effects of LLLT after FA exposure. Male Wistar rats were exposed to FA (1%) or vehicle (distillated water) during 3 consecutive days and treated or not with LLLT (1 and 5 hours after each FA exposure). Non-manipulated rats were used as control. 24 h after the last FA exposure, we analyzed the local and systemic effects of LLLT. The treatment with LLLT reduced the development of neutrophilic lung inflammation induced by FA, as observed by the reduced number of leukocytes, mast cells degranulated, and a decreased myeloperoxidase activity in the lung. Moreover, LLLT also reduced the microvascular lung permeability in the parenchyma and the intrapulmonary bronchi. Alterations on the profile of inflammatory cytokines were evidenced by the reduced levels of IL-6 and TNF-α and the elevated levels of IL-10 in the lung. Together, our results showed that LLLT abolishes FA-induced neutrophilic lung inflammation by a reduction of the inflammatory cytokines and mast cell degranulation. This study may provide important information about the mechanisms of LLLT in lung inflammation induced by a pollutant.
Collapse
Affiliation(s)
- Cristiane Miranda da Silva
- Post Graduate Program in Biophotonics Applied to Health Sciences, University Nove de Julho (UNINOVE), São Paulo, Brazil
| | - Mayara Peres Leal
- Post Graduate Program in Biophotonics Applied to Health Sciences, University Nove de Julho (UNINOVE), São Paulo, Brazil
| | - Robson Alexandre Brochetti
- Post Graduate Program in Biophotonics Applied to Health Sciences, University Nove de Julho (UNINOVE), São Paulo, Brazil
| | - Tárcio Braga
- Department of Immunology, University of São Paulo, São Paulo, Brazil
| | - Luana Beatriz Vitoretti
- Post Graduate Program in Biophotonics Applied to Health Sciences, University Nove de Julho (UNINOVE), São Paulo, Brazil
| | | | - Amílcar Sabino Damazo
- Department of Basic Science in Health, Faculty of Medical Sciences, Federal University of Cuiabá, Cuiabá, Brazil
| | - Ana Paula Ligeiro-de-Oliveira
- Post Graduate Program in Biophotonics Applied to Health Sciences, University Nove de Julho (UNINOVE), São Paulo, Brazil
| | | | - Adriana Lino-dos-Santos-Franco
- Post Graduate Program in Biophotonics Applied to Health Sciences, University Nove de Julho (UNINOVE), São Paulo, Brazil
- * E-mail:
| |
Collapse
|
36
|
Lima LF, Murta GL, Bandeira ACB, Nardeli CR, Lima WG, Bezerra FS. Short-term exposure to formaldehyde promotes oxidative damage and inflammation in the trachea and diaphragm muscle of adult rats. Ann Anat 2015; 202:45-51. [PMID: 26342159 DOI: 10.1016/j.aanat.2015.08.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Revised: 07/07/2015] [Accepted: 08/07/2015] [Indexed: 11/17/2022]
Abstract
Formaldehyde (FA) is an environmental pollutant widely used in industry. Exposure to FA causes irritation of the respiratory mucosa and is associated with inflammation and oxidative stress in the airways. This study aimed at investigating the oxidative effects on the inflammatory response in the trachea and the diaphragm muscle (DM) of rats exposed to different concentrations of formaldehyde. Twenty-eight Fischer male rats were divided into four groups: control group (CG) exposed to the ambient air; and three groups exposed to the following formaldehyde concentrations of 1% (FA1), 5% (FA5) and 10% (FA10), respectively. The exposure occurred for twenty minutes, three times a day for five days. Oxidative stress analyses were performed by carbonyl protein, lipid peroxidation and catalase activity. The assessment of inflammatory cell influx in both organs and the mucus production in the trachea was carried out. There was an increase of lipid peroxidation in the trachea and the DM of FA1 and FA5 groups compared to the CG and FA10. The oxidation of DM proteins increased in FA10 group compared to CG, FA1 and FA5. The catalase enzyme activity in the DM was reduced in FA1, FA5 and FA10 compared to the CG. Meanwhile, there was a reduction in the enzymatic activity of FA10 compared to the CG in the trachea. The morphometric analysis in the DM demonstrated an influx of inflammatory cells in FA10 compared to the CG. In FA10 group, the tracheal epithelium showed metaplasia and ulceration. In addition, the tracheal epithelium showed more mucus deposits in FA5 compared to CG, FA1 and FA10. The results demonstrated that the exposure to formaldehyde at different concentrations in a short period of time promotes oxidative damage and inflammation in the DM and the trachea and causes metaplasia, ulceration and increased mucus at the latter.
Collapse
Affiliation(s)
- Luiza Fagundes Lima
- Graduating in Medicine, School of Medicine, Federal University of Ouro Preto (UFOP), Ouro Preto, MG, Brazil
| | - Giselle Luciane Murta
- Laboratory of Metabolic Biochemistry (LBM), Department of Biological Sciences (DECBI), Center of Research in Biological Sciences (NUPEB), Federal University of Ouro Preto (UFOP), Campus Universitário Morro do Cruzeiro, s/n, Ouro Preto, MG, Brazil
| | - Ana Carla Balthar Bandeira
- Laboratory of Metabolic Biochemistry (LBM), Department of Biological Sciences (DECBI), Center of Research in Biological Sciences (NUPEB), Federal University of Ouro Preto (UFOP), Campus Universitário Morro do Cruzeiro, s/n, Ouro Preto, MG, Brazil
| | - Clarissa Rodrigues Nardeli
- Graduating in Medicine, School of Medicine, Federal University of Ouro Preto (UFOP), Ouro Preto, MG, Brazil
| | - Wanderson Geraldo Lima
- Laboratory of Morphopathology (LMP), Department of Biological Sciences (DECBI), Center of Research in Biological Sciences (NUPEB), Federal University of Ouro Preto (UFOP), Ouro Preto, MG, Brazil
| | - Frank Silva Bezerra
- Laboratory of Metabolic Biochemistry (LBM), Department of Biological Sciences (DECBI), Center of Research in Biological Sciences (NUPEB), Federal University of Ouro Preto (UFOP), Campus Universitário Morro do Cruzeiro, s/n, Ouro Preto, MG, Brazil.
| |
Collapse
|
37
|
Formaldehyde Crosses the Human Placenta and Affects Human Trophoblast Differentiation and Hormonal Functions. PLoS One 2015; 10:e0133506. [PMID: 26186596 PMCID: PMC4506020 DOI: 10.1371/journal.pone.0133506] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Accepted: 06/29/2015] [Indexed: 11/19/2022] Open
Abstract
The chorionic villus of the human placenta is the source of specific endocrine functions and nutrient exchanges. These activities are ensured by the syncytiotrophobast (ST), which bathes in maternal blood. The ST arises and regenerates throughout pregnancy by fusion of underlying cytotrophoblasts (CT). Any anomaly of ST formation or regeneration can affect pregnancy outcome and fetal growth. Because of its direct interaction with maternal blood, the ST is sensitive to drugs, pollutants and xenohormones. Ex vivo assays of perfused cotyledon show that formaldehyde, a common pollutant present in furniture, paint and plastics, can accumulate in the human placenta and cross to the fetal compartment. By means of RT-qPCR, immunoblot and immunocytochemistry experiments, we demonstrate in vitro that formaldehyde exerts endocrine toxicity on human trophoblasts, including a decrease in the production of protein hormones of pregnancy. In addition, formaldehyde exposure triggered human trophoblast fusion by upregulating syncitin-1 receptor expression (ASC-type amino-acid transporter 2: ASCT2). Moreover, we show that formaldehyde-exposed trophoblasts present an altered redox status associated with oxidative stress, and an increase in ASCT2 expression intended to compensate for this stress. Finally, we demonstrate that the adverse effects of formaldehyde on trophoblast differentiation and fusion are reversed by N-acetyl-L-cysteine (Nac), an antioxidant.
Collapse
|
38
|
Cytotoxin-induced NADPH oxides activation: roles in regulation of cell death. Arch Toxicol 2015; 89:991-1006. [PMID: 25690733 DOI: 10.1007/s00204-015-1476-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Accepted: 02/09/2015] [Indexed: 02/07/2023]
Abstract
Numerous studies have shown that a variety of cytotoxic agents can activate the NADPH oxidase system and induce redox-dependent regulation of cellular functions. Cytotoxin-induced NADPH oxidase activation may either exert cytoprotective actions (e.g., survival, proliferation, and stress tolerance) or cause cell death. Here we summarize the experimental evidence showing the context-dependent dichotomous effects of NADPH oxidase on cell fate under cytotoxic stress conditions and the potential redox signaling mechanisms underlying this phenomenon. Clearly, it is difficult to create a unified paradigm on the toxicological implications of NADPH oxidase activation in response to cytotoxic stimuli. We suggest that interventional strategies targeting the NADPH oxidase system to prevent the adverse impacts of cytotoxins need to be contemplated in a stimuli- and cell type-specific manner.
Collapse
|
39
|
Aydin S, Ogeturk M, Kuloglu T, Kavakli A, Aydin S. Effect of carnosine supplementation on apoptosis and irisin, total oxidant and antioxidants levels in the serum, liver and lung tissues in rats exposed to formaldehyde inhalation. Peptides 2015; 64:14-23. [PMID: 25541044 DOI: 10.1016/j.peptides.2014.11.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Revised: 11/05/2014] [Accepted: 11/08/2014] [Indexed: 01/11/2023]
Abstract
The main objective of the study has been to show whether carnosine has positive effects on liver and lung tissues of rats exposed to a range of formaldehyde concentrations, and to explore how irisin expression and antioxidant capacity are altered in these tissues by carnosine supplementation. Sprague-Dawley type male rats were divided into 8 groups with 6 animals in each: (I) Control; no chemical supplementation); (II) sham (100mg/kg/day carnosine); (III) low dose formaldehyde (LDFA) for 5 days/week; (IV) LDFA for 5 days/week and carnosine); (V) moderate dose formaldehyde (MDFA) for 5 days/week); (VI) MDFA for 5 days/week and carnosine; (VII) high dose formaldehyde (HDFA) for 5 days/week; (VIII) and HDFA for 5 days/week and carnosine. Sham and control groups were exposed to normal air. Irisin levels of the serum, liver and lung tissue supernatants were analyzed by ELISA, while the REL method was used to determine total oxidant/antioxidant capacity. Irisin production by the tissues was detected immunohistochemically. Increasing doses of FA decreased serum/tissue irisin and total antioxidant levels relative to the controls, as also to increases in TUNEL expressions, total oxidant level, oxidant and apoptosis index. Irisin expression was detected in hepatocyte and sinusoidal cells of the liver and parenchymal cells of the lung. In conclusion, while FA exposure reduces irisin and total oxidant in the serum, liver and lung tissues in a dose-dependent manner and increases the total antioxidant capacity, carnosine supplementation reduces the oxidative stress and restores the histopathological and biochemical signs.
Collapse
Affiliation(s)
- Suna Aydin
- Department of Anatomy, Medical School, Firat University, 23119 Elazig, Turkey; Department of Cardiovascular Surgery, Elazig Training and Research Hospital, 23100 Elazig, Turkey
| | - Murat Ogeturk
- Department of Anatomy, Medical School, Firat University, 23119 Elazig, Turkey
| | - Tuncay Kuloglu
- Department of Histology and Embryology, Medical School, Firat University, 23119 Elazig, Turkey
| | - Ahmet Kavakli
- Department of Anatomy, Medical School, Firat University, 23119 Elazig, Turkey
| | - Suleyman Aydin
- Department of Medical Biochemistry and Clinical Biochemistry (Firat Hormones Research Group), Medical School, Firat University, 23119 Elazig, Turkey.
| |
Collapse
|
40
|
Peluso MEM, Munnia A, Giese RW, Catelan D, Rocca S, Farigu S, Leoni A, Bruzzone M, Ceppi M, Biggeri A. Exocyclic DNA adducts in sheep with skeletal fluorosis resident in the proximity of the Portoscuso-Portovesme industrial estate on Sardinia Island, Italy. Toxicol Res (Camb) 2015. [DOI: 10.1039/c5tx00045a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
The mechanisms by which fluoride produces its toxic effects are still not clear.
Collapse
Affiliation(s)
- Marco E. M. Peluso
- Cancer Risk Factor Branch
- ISPO-Cancer Prevention and Research Institute
- Florence
- Italy
| | - Armelle Munnia
- Cancer Risk Factor Branch
- ISPO-Cancer Prevention and Research Institute
- Florence
- Italy
| | - Roger W. Giese
- Department of Pharmaceutical Sciences in the Bouve College of Health Sciences
- Barnett Institute
- Northeastern University
- Boston, Massachusetts
- USA
| | - Dolores Catelan
- Department of Statistics “G. Parenti”
- University of Florence
- Florence
- Italy
- Biostatistic Unit
| | - Stefano Rocca
- Department of Veterinary Medicine
- University of Sassari
- Sassari
- Italy
| | - Serafina Farigu
- Department of Veterinary Medicine
- University of Sassari
- Sassari
- Italy
| | - Antonio Leoni
- Department of Veterinary Medicine
- University of Sassari
- Sassari
- Italy
| | - Marco Bruzzone
- IRCSS San Martino Hospital – National Cancer Research Institute
- Genoa
- Italy
| | - Marcello Ceppi
- IRCSS San Martino Hospital – National Cancer Research Institute
- Genoa
- Italy
| | - Annibale Biggeri
- Department of Statistics “G. Parenti”
- University of Florence
- Florence
- Italy
- Biostatistic Unit
| |
Collapse
|
41
|
Liu MW, Su MX, Wang YH, Qian CY. Effect of Melilotus extract on lung injury via the upregulation of tumor necrosis factor-α-induced protein-8-like 2 in septic mice. Mol Med Rep 2014; 11:1675-84. [PMID: 25405912 PMCID: PMC4270336 DOI: 10.3892/mmr.2014.2965] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Accepted: 10/31/2014] [Indexed: 11/17/2022] Open
Abstract
As a Traditional Chinese Medicine, Melilotus extracts have been reported to function as an anti-inflammatory agent, antioxidant and inhibitor of capillary permeability. The present study aimed to identify the mechanisms by which Melilotus interferes with inflammation-associated and oxidative stress pathways during sepsis. An animal model of cecal ligation-perforation (CLP)-induced sepsis was established. Two hours prior to surgery, animals in the treatment group were administered 25 mg/kg Melilotus extract tablets and subsequently every 8 h. At 24 h post-administration, pathological modifications in lung tissue and expression levels of tumor necrosis factor-α-induced protein-8-like 2 (TIPE2) expression, nuclear factor (NF)-κB, toll-like receptor 4 (TLR4), heme oxygenase-1 (HO-1), inhibitor of κB kinase (IκB), pro-inflammatory mediators (interleukin-6 and tumor necrosis factor-α), myeloperoxidase (MPO), malondialdehyde (MDA) and superoxide dismutase (SOD), were examined. The results showed that Melilotus extract had a marked effect on the pathological manifestation of lung tissue and lung inflammatory response, the upregulation of TIPE2, HO-1 and IκB expression, and the inhibition of TLR4 and NF-κB activities. In addition, following treatment with Melilotus extract, the model animals demonstrated decreased levels of MPO and MDA as well as increased levels of SOD. In conclusion, these results indicated that Melilotus extract may be a potential therapeutic agent for the treatment of CLP-induced lung injury, the mechanism of which proceeded via inflammation- and oxidation-associated pathways by increasing TIPE2 expression.
Collapse
Affiliation(s)
- Ming-Wei Liu
- Department of Emergency, The First Hospital Affiliated to Kunming Medical University, Kunming, P.R. China
| | - Mei-Xian Su
- Surgical Intensive Care Unit, The Second Hospital Affiliated to Kunming Medical University, Kunming, P.R. China
| | - Yun-Hui Wang
- Department of Emergency, The First Hospital Affiliated to Kunming Medical University, Kunming, P.R. China
| | - Chuan-Yun Qian
- Department of Emergency, The First Hospital Affiliated to Kunming Medical University, Kunming, P.R. China
| |
Collapse
|
42
|
Wang F, Li C, Liu W, Jin Y, Guo L. Effects of subchronic exposure to low-dose volatile organic compounds on lung inflammation in mice. ENVIRONMENTAL TOXICOLOGY 2014; 29:1089-1097. [PMID: 23418084 DOI: 10.1002/tox.21844] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2012] [Revised: 12/12/2012] [Accepted: 12/25/2012] [Indexed: 06/01/2023]
Abstract
Inflammatory lung diseases are characterized by chronic inflammation and oxidant/antioxidant imbalance. Exposure to some kinds of volatile organic compounds (VOCs) leads to lung inflammation, oxidative stress, and immune modulation. However, it is suspected that sub-chronic exposure to low-dose VOCs mixture induces or aggravates lung inflammation. To clarify the effect of this exposure on lung inflammatory responses, 40 male Kunming mice were exposed in four similar static chambers, 0 (control) and three different doses of VOCs mixture (groups 1-3). The concentrations of VOCs mixture were as follows: formaldehyde, benzene, toluene, and xylene 0.10 + 0.11 + 0.20 + 0.20 mg/m(3) , 0.50 + 0.55 + 1.00 + 1.00 mg/m(3) , 1.00 + 1.10 + 2.00 + 2.00 mg/m(3) , respectively, which corresponded to 1, 5, and 10 times of indoor air quality standard in China. After 90 consecutive days of exposure (2 h/day), oxidative stress markers in lung, cellular infiltration and cytokines, chemokine, neurotrophin in bronchoalveolar lavage fluid (BALF), and immunoglobulin (Ig) in serum were examined. VOCs exposure could increase significantly reactive oxygen species (ROS) in lung, the levels of interleukin-8 (IL-8), IL-4, eotaxin, nerve growth factor (NGF), and various types of leukocytes in BALF, IgE concentration in serum. In contrast, GSH to GSSG ratio and interferon-gamma were significantly decreased following the VOCs exposure. These results indicate that the VOCs mixture-induced inflammatory response is at least partly caused by release of the ROS and mediators from the activated eosinophils, neutrophils, alveolar macrophages and epithelial cells.
Collapse
Affiliation(s)
- Fan Wang
- School of Environmental Science and Technology, Dalian University of Technology, Key Laboratory of Industrial Ecology and Environmental Engineering, MOE, Dalian 116024, China; Department of Biological Science, Luoyang Normal University, Luoyang 471022, China
| | | | | | | | | |
Collapse
|
43
|
Montuschi P, Paris D, Montella S, Melck D, Mirra V, Santini G, Mores N, Montemitro E, Majo F, Lucidi V, Bush A, Motta A, Santamaria F. Nuclear Magnetic Resonance–based Metabolomics Discriminates Primary Ciliary Dyskinesia from Cystic Fibrosis. Am J Respir Crit Care Med 2014; 190:229-33. [DOI: 10.1164/rccm.201402-0249le] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
|
44
|
Maiellaro M, Correa-Costa M, Vitoretti LB, Gimenes Júnior JA, Câmara NOS, Tavares-de-Lima W, Farsky SHP, Lino-dos-Santos-Franco A. Exposure to low doses of formaldehyde during pregnancy suppresses the development of allergic lung inflammation in offspring. Toxicol Appl Pharmacol 2014; 278:266-74. [PMID: 24844129 DOI: 10.1016/j.taap.2014.05.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Revised: 05/02/2014] [Accepted: 05/05/2014] [Indexed: 01/08/2023]
Abstract
Formaldehyde (FA) is an environmental and occupational pollutant, and its toxic effects on the immune system have been shown. Nevertheless, no data are available regarding the programming mechanisms after FA exposure and its repercussions for the immune systems of offspring. In this study, our objective was to investigate the effects of low-dose exposure of FA on pregnant rats and its repercussion for the development of allergic lung inflammation in offspring. Pregnant Wistar rats were assigned in 3 groups: P (rats exposed to FA (0.75 ppm, 1 h/day, 5 days/week, for 21 days)), C (rats exposed to vehicle of FA (distillated water)) and B (rats non-manipulated). After 30 days of age, the offspring was sensitised with ovalbumin (OVA)-alum and challenged with aerosolized OVA (1%, 15 min, 3 days). After 24 h the OVA challenge the parameters were evaluated. Our data showed that low-dose exposure to FA during pregnancy induced low birth weight and suppressed the development of allergic lung inflammation and tracheal hyperresponsiveness in offspring by mechanisms mediated by reduced anaphylactic antibodies synthesis, IL-6 and TNF-alpha secretion. Elevated levels of IL-10 were found. Any systemic alteration was detected in the exposed pregnant rats, although oxidative stress in the uterine environment was evident at the moment of the delivery based on elevated COX-1 expression and reduced cNOS and SOD-2 in the uterus. Therefore, we show the putative programming mechanisms induced by FA on the immune system for the first time and the mechanisms involved may be related to oxidative stress in the foetal microenvironment.
Collapse
Affiliation(s)
- Marília Maiellaro
- Department of Clinical and Toxicological Analyses, Faculty of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - Matheus Correa-Costa
- Department of Immunology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Luana Beatriz Vitoretti
- Department of Pharmacology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | | | | | - Wothan Tavares-de-Lima
- Department of Pharmacology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Sandra Helena Poliselli Farsky
- Department of Clinical and Toxicological Analyses, Faculty of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - Adriana Lino-dos-Santos-Franco
- Department of Clinical and Toxicological Analyses, Faculty of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil.
| |
Collapse
|
45
|
Ji Z, Li X, Fromowitz M, Mutter-Rottmayer E, Tung J, Smith MT, Zhang L. Formaldehyde induces micronuclei in mouse erythropoietic cells and suppresses the expansion of human erythroid progenitor cells. Toxicol Lett 2014; 224:233-9. [PMID: 24188930 PMCID: PMC3891867 DOI: 10.1016/j.toxlet.2013.10.028] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2013] [Revised: 10/23/2013] [Accepted: 10/24/2013] [Indexed: 10/26/2022]
Abstract
Although formaldehyde (FA) has been classified as a human leukemogen, the mechanisms of leukemogenesis remain elusive. Previously, using colony-forming assays in semi-solid media, we showed that FA exposure in vivo and in vitro was toxic to human hematopoietic stem/progenitor cells. In the present study, we have applied new liquid in vitro erythroid expansion systems to further investigate the toxic effects of FA (0-150 μM) on cultured mouse and human hematopoietic stem/progenitor cells. We determined micronucleus (MN) levels in polychromatic erythrocytes (PCEs) differentiated from mouse bone marrow. We measured cell growth, cell cycle distribution, and chromosomal instability, in erythroid progenitor cells (EPCs) expanded from human peripheral blood mononuclear cells. FA significantly induced MN in mouse PCEs and suppressed human EPC expansion in a dose-dependent manner, compared with untreated controls. In the expanded human EPCs, FA slightly increased the proportion of cells in G2/M at 100 μM and aneuploidy frequency in chromosomes 7 and 8 at 50 μM. Our findings provide further evidence of the toxicity of FA to hematopoietic stem/progenitor cells and support the biological plausibility of FA-induced leukemogenesis.
Collapse
Affiliation(s)
| | | | - Michele Fromowitz
- Division of Environmental Health Sciences, School of Public Health, University of California, Berkeley, CA 94720
| | - Elizabeth Mutter-Rottmayer
- Division of Environmental Health Sciences, School of Public Health, University of California, Berkeley, CA 94720
| | - Judy Tung
- Division of Environmental Health Sciences, School of Public Health, University of California, Berkeley, CA 94720
| | - Martyn T. Smith
- Division of Environmental Health Sciences, School of Public Health, University of California, Berkeley, CA 94720
| | - Luoping Zhang
- Division of Environmental Health Sciences, School of Public Health, University of California, Berkeley, CA 94720
| |
Collapse
|
46
|
Peluso MEM, Munnia A, Tarocchi M, Giese RW, Annaratone L, Bussolati G, Bono R. Oxidative DNA damage and formalin-fixation procedures. Toxicol Res (Camb) 2014. [DOI: 10.1039/c4tx00046c] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
An experimental study on how formaldehyde-fixation is capable of inducing excess oxidative DNA damage in formalin-fixed paraffin-embedded tissues.
Collapse
Affiliation(s)
- Marco E. M. Peluso
- Cancer Risk Factor Branch
- Cancer Prevention and Research Institute
- Florence, Italy
| | - Armelle Munnia
- Cancer Risk Factor Branch
- Cancer Prevention and Research Institute
- Florence, Italy
| | - Mirko Tarocchi
- Department of Experimental and Clinical Biomedical Sciences
- University of Florence
- Florence, Italy
| | - Roger W. Giese
- Department of Pharmaceutical Sciences in the Bouve College of Health Sciences
- Barnett Institute
- Northeastern University
- Boston, USA
| | | | | | - Roberto Bono
- Department of Public Health and Pediatry
- University of Turin
- Turin, Italy
| |
Collapse
|
47
|
Ye X, Ji Z, Wei C, McHale CM, Ding S, Thomas R, Yang X, Zhang L. Inhaled formaldehyde induces DNA-protein crosslinks and oxidative stress in bone marrow and other distant organs of exposed mice. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2013; 54:705-718. [PMID: 24136419 DOI: 10.1002/em.21821] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Revised: 09/16/2013] [Accepted: 09/16/2013] [Indexed: 06/02/2023]
Abstract
Formaldehyde (FA), a major industrial chemical and ubiquitous environmental pollutant, has been classified as a leukemogen. The causal relationship remains unclear, however, due to limited evidence that FA induces toxicity in bone marrow, the site of leukemia induction, and in other distal organs. Although induction of DNA-protein crosslinks (DPC), a hallmark of FA toxicity, was not previously detected in the bone marrow of FA-exposed rats and monkeys in studies published in the 1980s, our recent studies showed increased DPC in the bone marrow, liver, kidney, and testes of exposed Kunming mice. To confirm these preliminary results, in the current study we exposed BALB/c mice to 0, 0.5, 1.0, and 3.0 mg m(-3) FA (8 hr per day, for 7 consecutive days) by nose-only inhalation and measured DPC levels in bone marrow and other organs of exposed mice. As oxidative stress is a potential mechanism of FA toxicity, we also measured glutathione (GSH), reactive oxygen species (ROS), and malondialdehyde (MDA), in the bone marrow, peripheral blood mononuclear cells, lung, liver, spleen, and testes of exposed mice. Significant dose-dependent increases in DPC, decreases in GSH, and increases in ROS and MDA were observed in all organs examined (except for DPC in lung). Bone marrow was among the organs with the strongest effects for DPC, GSH, and ROS. In conclusion, exposure of mice to FA by inhalation induced genotoxicity and oxidative stress in bone marrow and other organs. These findings strengthen the biological plausibility of FA-induced leukemogenesis and systemic toxicity.
Collapse
Affiliation(s)
- Xin Ye
- Laboratory of Environmental Biomedicine, Hubei Key Laboratory of Genetic Regulation and Integrative Biology, College of Life Sciences, Huazhong Normal University, Wuhan, 430079, People's Republic of China
| | | | | | | | | | | | | | | |
Collapse
|
48
|
de Queiroz JDF, Leal AMDS, Terada M, Agnez-Lima LF, Costa I, Pinto NCDS, de Medeiros SRB. Surface modification by argon plasma treatment improves antioxidant defense ability of CHO-k1 cells on titanium surfaces. Toxicol In Vitro 2013; 28:381-7. [PMID: 24296152 DOI: 10.1016/j.tiv.2013.11.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2013] [Revised: 10/04/2013] [Accepted: 11/12/2013] [Indexed: 11/30/2022]
Abstract
Titanium is one of the most used materials in implants and changes in its surface can modify the cellular functional response to better implant fixation. An argon plasma treatment generates a surface with improved mechanical proprieties without modifying its chemical composition. Oxidative stress induced by biomaterials is considered one of the major causes of implant failure and studies in this field are fundamental to evaluate the biocompatibility of a new material. Therefore, in this work, induction of oxidative stress by titanium surfaces subjected to plasma treatment (PTTS) was evaluated. The viability of CHO-k1 cells was higher on PTTS discs. Cells grown on titanium surfaces are subjected to intracellular oxidative stress. Titanium discs subjected to the plasma treatment induced less oxidative stress than the untreated ones, which resulted in improved cellular survival. These were associated with improved cellular antioxidant response in Plasma Treated Titanium Surface (PTTS). Furthermore, a decrease in protein and DNA oxidative damage was observed on cells grown on the roughed surface when compared to the smooth one. In conclusion, our data suggest that the treatment of titanium with argon plasma may improve its biocompatible, thus improving its performance as implants or as a scaffold in tissue engineering.
Collapse
Affiliation(s)
| | | | - Maysa Terada
- Instituto de Pesquisas Energéticas e Nucleares, IPEN/CNEN-SP, Brazil
| | | | - Isolda Costa
- Instituto de Pesquisas Energéticas e Nucleares, IPEN/CNEN-SP, Brazil
| | | | | |
Collapse
|
49
|
Ramesh Babu PB, Krishnamoorthy P. Nonmicrobial-mediated inflammatory airway diseases--an update. J Physiol Biochem 2013; 70:263-70. [PMID: 24293217 DOI: 10.1007/s13105-013-0297-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Accepted: 10/17/2013] [Indexed: 12/01/2022]
Abstract
In lungs, airways are in constant contact with air, microbes, allergens, and environmental pollutants. The airway epithelium represents the first line of lung defense through different mechanisms, which facilitate clearance of inhaled pathogens and environmental particles while minimizing an inflammatory response. The innate immune system facilitates immediate recognition of both foreign pathogens and tissue damage through toll-like receptor, which acts as a gateway for all intracellular events leading to inflammation. In the absence of microbial stimulus, the immune system is capable of detecting a wide range of insults against the host. This review focuses on various molecular mechanisms involved in pathophysiology of airway inflammation mediated by environmental factors, cellular stress, and pharmacological and clinical agents.
Collapse
|
50
|
Formaldehyde inhalation reduces respiratory mechanics in a rat model with allergic lung inflammation by altering the nitric oxide/cyclooxygenase-derived products relationship. Food Chem Toxicol 2013; 59:731-8. [PMID: 23871789 DOI: 10.1016/j.fct.2013.07.027] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2013] [Revised: 05/20/2013] [Accepted: 07/11/2013] [Indexed: 11/23/2022]
Abstract
Bronchial hyperresponsiveness is a hallmark of asthma and many factors modulate bronchoconstriction episodes. A potential correlation of formaldehyde (FA) inhalation and asthma has been observed; however, the exact role of FA remains controversial. We investigated the effects of FA inhalation on Ovalbumin (OVA) sensitisation using a parameter of respiratory mechanics. The involvement of nitric oxide (NO) and cyclooxygenase-derived products were also evaluated. The rats were submitted, or not, to FA inhalation (1%, 90 min/day, 3 days) and were OVA-sensitised and challenged 14 days later. Our data showed that previous FA exposure in allergic rats reduced bronchial responsiveness, respiratory resistance (Rrs) and elastance (Ers) to methacholine. FA exposure in allergic rats also increased the iNOS gene expression and reduced COX-1. L-NAME treatment exacerbated the bronchial hyporesponsiveness and did not modify the Ers and Rrs, while Indomethacin partially reversed all of the parameters studied. The L-NAME and Indomethacin treatments reduced leukotriene B₄ levels while they increased thromboxane B₂ and prostaglandin E₂. In conclusion, FA exposure prior to OVA sensitisation reduces the respiratory mechanics and the interaction of NO and PGE₂ may be representing a compensatory mechanism in order to protect the lung from bronchoconstriction effects.
Collapse
|