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Hussain N, Ikram N, Khan KUR, Hussain L, Alqahtani AM, Alqahtani T, Hussain M, Suliman M, Alshahrani MY, Sitohy B. Cichorium intybus L. significantly alleviates cigarette smoke-induced acute lung injury by lowering NF-κB pathway activation and inflammatory mediators. Heliyon 2023; 9:e22055. [PMID: 38045213 PMCID: PMC10692792 DOI: 10.1016/j.heliyon.2023.e22055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 11/02/2023] [Accepted: 11/02/2023] [Indexed: 12/05/2023] Open
Abstract
Background Cigarette smoke (CS) is one of the primary causes of acute lung injury (ALI) via provoking pulmonary inflammation and oxidative stress. Despite substantial studies, no effective treatment for ALI is presently available. Purpose New prospective treatment options for ALI are required. Thus, this project was designed to investigate the in vivo and in vitro protective effects of 70 % methanolic-aqueous crude extract of whole plant of Cichorium intybus (Ci.Mce) against CS-induced ALI. Study design /methods: Initially, male Swiss albino mice were subjected to whole-body CS exposure for 10 continuous days to prepare CS-induced ALI models. Normal saline (10 mL/kg), Ci.Mce (100, 200, 300 mg/kg), and Dexamethasone (1 mg/kg) were orally administered to respective animal groups 1 h prior to CS-exposure. 24 hrs after the last CS-exposure, BALF and lungs were harvested to study the key characteristics of ALI. Next, HPLC analysis was done to explore the phytoconstituents. Results Ci.Mce exhibited significant reductions in lung macrophage and neutrophil infiltration, lung weight coefficient, and albumin exudation. Additionally, it effectively ameliorated lung histopathological alterations and hypoxemia. Notably, Ci.Mce exerted inhibitory effects on the excessive generation of IL-6, IL-1β, and KC in both CS-induced ALI murine models and CSE-stimulated RAW 264.7 macrophages. Noteworthy benefits included the attenuation of oxidative stress induced by CS, evidenced by decreased levels of MDA, TOS, and MPO, alongside enhanced TAC production. Furthermore, Ci.Mce demonstrated a marked reduction in CS-induced NF-κB expression, both in vivo and in vitro. Conclusion Consequently, Cichorium intybus could be a therapeutic option for CS-induced ALI due to its ability to suppress inflammatory reactions, mitigate oxidative stress, and quell NF-κB p65 activation.
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Affiliation(s)
- Nadia Hussain
- Department of Pharmaceutical Sciences, College of Pharmacy, Al Ain University, Al Ain, 64141, United Arab Emirates
| | - Nadia Ikram
- Faculty of Pharmacy, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan
| | - Kashif ur Rehman Khan
- Faculty of Pharmacy, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan
| | - Liaqat Hussain
- Department of Pharmacology, Government College University, Faisalabad, 38,000, Pakistan
| | - Ali M. Alqahtani
- Department of Pharmacology, College of Pharmacy, King Khalid University, Abha, 62529, Saudi Arabia
| | - Taha Alqahtani
- Department of Pharmacology, College of Pharmacy, King Khalid University, Abha, 62529, Saudi Arabia
| | - Musaddique Hussain
- Faculty of Pharmacy, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan
| | - Muath Suliman
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Khalid University, P.O. Box 61413, Abha, 9088, Saudi Arabia
| | - Mohammad Y. Alshahrani
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Khalid University, P.O. Box 61413, Abha, 9088, Saudi Arabia
| | - Basel Sitohy
- Department of Clinical Microbiology, Infection and Immunology, Umeå University, SE-90185, Umeå, Sweden
- Department of Radiation Sciences, Oncology, Umeå University, SE-90185, Umeå, Sweden
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Resistance training prevents damage to the mitochondrial function of the skeletal muscle of rats exposed to secondary cigarette smoke. Life Sci 2022; 309:121017. [PMID: 36183779 DOI: 10.1016/j.lfs.2022.121017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 09/17/2022] [Accepted: 09/26/2022] [Indexed: 11/30/2022]
Abstract
AIM To analyze the consumption of oxygen and to quantify the mitochondrial respiratory chain proteins (OXPHOS) in the gastrocnemius muscle of rats exposed to cigarette smoke and/or RT practitioners. MAIN METHODS Wistar rats were divided into groups: Control (C), Smoker (S), Exercise (E) and Exercise Smoker (ES). Groups F and ES were exposed to the smoke of 4 cigarettes for 30 min, 2× a day, 5× a week, for 16 weeks. Groups E and ES performed four climbs with progressive load, 1× per day, 5× per week, for 16 weeks. The gastrocnemius muscle was collected for analysis of OXPHOS content and oxygen consumption. Groups S (vs. C) and ES (vs. C and E) showed lower body weight gain when observing the evolution curve. KEY FINDINGS The S rats showed a reduction in the NDUFB8 proteins of complex 1, SDHB of complex 2, MTC01 of complex 4 and ATP5A of complex 5 (ATP Synthase) compared to Group C. Additionally, S rats also showed increased consumption of O2 in Basal, Leak, Complex I and I/II combined measures compared to the other groups, suggesting that the activity of the mitochondria of these animals increased in terms of coupling and uncoupling parameters. SIGNIFICANCE Our data suggest that exposure to cigarette smoke for 16 weeks is capable of causing impairment of mitochondrial function with reduced expression of respiratory chain proteins in skeletal muscle. However, the RT was effective in preventing impairment of mitochondrial function in the skeletal muscle of rats exposed to secondary cigarette smoke.
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3
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Morales-Prieto DM, Fuentes-Zacarías P, Murrieta-Coxca JM, Gutierrez-Samudio RN, Favaro RR, Fitzgerald JS, Markert UR. Smoking for two- effects of tobacco consumption on placenta. Mol Aspects Med 2021; 87:101023. [PMID: 34521556 DOI: 10.1016/j.mam.2021.101023] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 08/22/2021] [Accepted: 09/07/2021] [Indexed: 12/14/2022]
Abstract
Tobacco smoking is an important public health issue recognized by the world health organization as one of the most serious, preventable risk factors for developing a series of pregnancy pathologies. Maternal smoking is positively associated with intrauterine growth restriction (IUGR) and gestational diabetes (GDM), but negatively associated with preeclampsia (PE). In this review, we examine epidemiological, clinical and laboratory studies of smoking effects on immunoregulation during pregnancy, trophoblast function, and placental vasculature development and metabolism. We aim to identify effects of tobacco smoke components on specific placental compartments or cells, which may contribute to the understanding of the influences of maternal smoking on placenta function in normal and pathological pregnancies. Data corroborates that in any trimester, smoking is unsafe for pregnancy and that its detrimental effects outweigh questionable benefits. The effects of maternal smoking on the maternal immune regulation throughout pregnancy and the impact of different tobacco products on fetal growth have not yet been fully understood. Smoking cessation rather than treatment with replacement therapies is recommended for future mothers because also single components of tobacco and its smoke may have detrimental effects on placental function.
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Affiliation(s)
| | | | | | | | - Rodolfo R Favaro
- Placenta Lab, Department of Obstetrics, University Hospital Jena, Jena, Germany
| | - Justine S Fitzgerald
- Placenta Lab, Department of Obstetrics, University Hospital Jena, Jena, Germany; Zentrum für ambulante Medizin, University Hospital Jena, Jena, Germany
| | - Udo R Markert
- Placenta Lab, Department of Obstetrics, University Hospital Jena, Jena, Germany.
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4
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Vincenten SCC, Mul K, Schreuder THA, Voermans NC, Horlings CGC, van Engelen BGM. Exploring the influence of smoking and alcohol consumption on clinical severity in patients with facioscapulohumeral muscular dystrophy. Neuromuscul Disord 2021; 31:824-828. [PMID: 34407911 DOI: 10.1016/j.nmd.2021.07.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 06/10/2021] [Accepted: 07/09/2021] [Indexed: 11/26/2022]
Abstract
Despite the growing knowledge on the (epi)genetic background of facioscapulohumeral muscular dystrophy (FSHD), the substantial variability in disease severity that exists between FSHD patients is not fully understood. We hypothesized that smoking and alcohol consumption are disease modifiers in FSHD and contribute to the variability in disease severity, because they are both associated with higher levels of oxidative stress in muscle tissue. Oxidative stress is known to influence FSHD muscle tissue. One hundred and ninety-eight genetically confirmed FSHD patients completed a questionnaire from which the number of packyears of smoking and the lifetime cumulative alcohol units consumed were calculated. Disease severity was determined by the FSDH evaluation score. Multiple linear regression analyses showed that both the number of packyears and the amount of alcohol consumption did not influence disease severity (respectively B = 0.025, ΔR2=0.006, p = 0.231; and B = 0.000, ΔR2=0.004, p = 0.406). Although smoking and excessive alcohol consumption are unhealthy habits which should be discouraged, these results show that smoking and alcohol consumption have no clinically meaningful modifying effect on disease severity in FSHD patients. However, prospective data should show whether alcohol consumption and smoking influence disease progression rate.
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Affiliation(s)
- Sanne C C Vincenten
- Department of Neurology, Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, PO Box 9101, 6500 HB Nijmegen, the Netherlands.
| | - Karlien Mul
- Department of Neurology, Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, PO Box 9101, 6500 HB Nijmegen, the Netherlands
| | - Tim H A Schreuder
- Department of Neurology, Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, PO Box 9101, 6500 HB Nijmegen, the Netherlands
| | - Nicol C Voermans
- Department of Neurology, Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, PO Box 9101, 6500 HB Nijmegen, the Netherlands
| | - Corinne G C Horlings
- Department of Neurology, Maastricht University Medical Centre School of Mental Health and Neuroscience, Maastricht, the Netherlands
| | - Baziel G M van Engelen
- Department of Neurology, Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, PO Box 9101, 6500 HB Nijmegen, the Netherlands
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5
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Zhang B, Li P, Li J, Liu X, Wu W. Effect of Oxidative Stress on Diaphragm Dysfunction and Exercise Intervention in Chronic Obstructive Pulmonary Disease. Front Physiol 2021; 12:684453. [PMID: 34163375 PMCID: PMC8215263 DOI: 10.3389/fphys.2021.684453] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 05/10/2021] [Indexed: 11/13/2022] Open
Abstract
Chronic obstructive pulmonary disease (COPD) can cause extrapulmonary injury such as diaphragm dysfunction. Oxidative stress is one of the main factors causing diaphragm dysfunction in COPD. Exercise plays a positive role in the prevention and treatment of diaphragm dysfunction in COPD, and the changes in diaphragm structure and function induced by exercise are closely related to the regulation of oxidative stress. Therefore, on the basis of the review of oxidative stress and the changes in diaphragm structure and function in COPD, this article analyzed the effects of exercise on oxidative stress and diaphragm dysfunction in COPD and explored the possible mechanism by which exercise improves oxidative stress. Studies have found that diaphragm dysfunction in COPD includes the decline of muscle strength, endurance, and activity. Oxidative stress mainly affects the structure and function of the diaphragm in COPD through protein oxidation, protease activation and calcium sensitivity reduction. The effects of exercise on oxidative stress level and diaphragm dysfunction may differ depending on the intensity, duration, and style of exercise. The mechanism of exercise on oxidative stress in the diaphragm of COPD may include improving antioxidant capacity, reducing oxidase activity and improving mitochondrial function.
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Affiliation(s)
- Bingzhi Zhang
- Department of Sports Medicine, Shanghai University of Sport, Shanghai, China
| | - Peijun Li
- Department of Sports Medicine, Shanghai University of Sport, Shanghai, China
| | - Jian Li
- Department of Sports Medicine, Shanghai University of Sport, Shanghai, China
| | - Xiaodan Liu
- School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Weibing Wu
- Department of Sports Medicine, Shanghai University of Sport, Shanghai, China
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Morsch ALBC, Wisniewski E, Luciano TF, Comin VH, Silveira GDB, Marques SDO, Thirupathi A, Silveira Lock PC, De Souza CT. Cigarette smoke exposure induces ROS-mediated autophagy by regulating sestrin, AMPK, and mTOR level in mice. Redox Rep 2020; 24:27-33. [PMID: 30957679 PMCID: PMC6748578 DOI: 10.1080/13510002.2019.1601448] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Many pathological conditions linked to cigarette smoking are caused by the
production of reactive oxygen species (ROS). The present study was conducted to
analyze the effect of ROS on the lungs of Swiss mice exposed to cigarette
smoking, focusing on autophagy-mediated mechanisms, and investigate the
involvement of SESN2, AMPK, and mTOR signaling. Mice were exposed to cigarette
smoke (CS) for 7, 15, 30, 45, and 60 days; the control group was not exposed to
CS. Only mice exposed to CS for 45 days were selected for subsequent
N-acetylcysteine (NAC) supplementation and smoke cessation
analyses. Exposure to CS increased the production of ROS and induced molecular
changes in the autophagy pathway, including an increase in phosphorylated AMPK
and ULK1, reduction in phosphorylated mTOR, and increases in SESN2, ATG12, and
LC3B levels. NAC supplementation reduced ROS levels and reversed all molecular
changes observed upon CS treatment, suggesting the involvement of oxidative
stress in inducing autophagy upon CS exposure. When exposure to CS was stopped,
there were decreases in the levels of oxidative stress, AMPK and ULK1
phosphorylation, and autophagy-initiating molecules and increase in mTOR
phosphorylation. In conclusion, these results suggest the involvement of ROS,
SESN2, AMPK, and mTOR in the CS-induced autophagic process in the lung.
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Affiliation(s)
- Ana Lucia Bernardo Carvalho Morsch
- a Laboratory of Exercise Biochemistry and Physiology , Graduate Program in Health Sciences, Extremo Sul Catarinense University , Criciúma , Brazil
| | - Elvis Wisniewski
- a Laboratory of Exercise Biochemistry and Physiology , Graduate Program in Health Sciences, Extremo Sul Catarinense University , Criciúma , Brazil
| | - Thais Fernandes Luciano
- a Laboratory of Exercise Biochemistry and Physiology , Graduate Program in Health Sciences, Extremo Sul Catarinense University , Criciúma , Brazil
| | - Vitor Hugo Comin
- a Laboratory of Exercise Biochemistry and Physiology , Graduate Program in Health Sciences, Extremo Sul Catarinense University , Criciúma , Brazil
| | - Gustavo de Bem Silveira
- a Laboratory of Exercise Biochemistry and Physiology , Graduate Program in Health Sciences, Extremo Sul Catarinense University , Criciúma , Brazil
| | - Scherolin de Oliveira Marques
- a Laboratory of Exercise Biochemistry and Physiology , Graduate Program in Health Sciences, Extremo Sul Catarinense University , Criciúma , Brazil
| | - Anand Thirupathi
- b Laboratory of Molecular Iron Metabolism, The Key Laboratory of Animal Physiology , Biochemistry and Molecular Biology of Hebei Province, College of Life Science, Hebei Normal University , Shijiazhuang , People's Republic of China
| | - Paulo Cesar Silveira Lock
- a Laboratory of Exercise Biochemistry and Physiology , Graduate Program in Health Sciences, Extremo Sul Catarinense University , Criciúma , Brazil
| | - Claudio Teodoro De Souza
- c Department of Internal Medicine , Medicine School, Federal University of Juiz de Fora , Juiz de Fora , Brazil
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7
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Li J, Lu Y, Li N, Li P, Su J, Wang Z, Wang T, Yang Z, Yang Y, Chen H, Xiao L, Duan H, Wu W, Liu X. Muscle metabolomics analysis reveals potential biomarkers of exercise‑dependent improvement of the diaphragm function in chronic obstructive pulmonary disease. Int J Mol Med 2020; 45:1644-1660. [PMID: 32186768 PMCID: PMC7169662 DOI: 10.3892/ijmm.2020.4537] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Accepted: 02/17/2020] [Indexed: 12/25/2022] Open
Abstract
Decreased diaphragm function is a crucial factor leading to reduced ventilatory efficiency and worsening of quality of life in chronic obstructive pulmonary disease (COPD). Exercise training has been demonstrated to effectively improve the function of the diaphragm. However, the mechanism of this process has not been identified. The emergence of metabolomics has allowed the exploration of new ideas. The present study aimed to analyze the potential biomarkers of exercise-dependent enhancement of diaphragm function in COPD using metabolomics. Sprague Dawley rats were divided into three groups: COPD + exercise group (CEG); COPD model group (CMG); and control group (CG). The first two groups were exposed to cigarette smoke for 16 weeks to establish a COPD model. Then, the rats in the CEG underwent aerobic exercise training for 9 weeks. Following confirmation that exercise effectively improved the diaphragm function, a gas chromatography tandem time-of-flight mass spectrometry analysis system was used to detect the differential metabolites and associated pathways in the diaphragm muscles of the different groups. Following exercise intervention, the pulmonary function and diaphragm contractility of the CEG rats were significantly improved compared with those of the CMG rats. A total of 36 different metabolites were identified in the comparison between the CMG and the CG. Pathway enrichment analysis indicated that these different metabolites were involved in 17 pathways. A total of 29 different metabolites were identified in the comparison between the CMG and the CEG, which are involved in 14 pathways. Candidate biomarkers were selected, and the pathways analysis of these metabolites demonstrated that 2 types of metabolic pathways, the nicotinic acid and nicotinamide metabolism and arginine and proline metabolism pathways, were associated with exercise-induced pulmonary rehabilitation.
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Affiliation(s)
- Jian Li
- Department of Sports Medicine, Shanghai University of Sport, Shanghai 200438, P.R. China
| | - Yufan Lu
- Department of Sports Medicine, Shanghai University of Sport, Shanghai 200438, P.R. China
| | - Ning Li
- Department of Sports Medicine, Shanghai University of Sport, Shanghai 200438, P.R. China
| | - Peijun Li
- Department of Sports Medicine, Shanghai University of Sport, Shanghai 200438, P.R. China
| | - Jianqing Su
- Department of Sports Medicine, Shanghai University of Sport, Shanghai 200438, P.R. China
| | - Zhengrong Wang
- Department of Sports Medicine, Shanghai University of Sport, Shanghai 200438, P.R. China
| | - Ting Wang
- Department of Sports Medicine, Shanghai University of Sport, Shanghai 200438, P.R. China
| | - Zhaoyu Yang
- Department of Sports Medicine, Shanghai University of Sport, Shanghai 200438, P.R. China
| | - Yahui Yang
- Department of Sports Medicine, Shanghai University of Sport, Shanghai 200438, P.R. China
| | - Haixia Chen
- School of Physical Education and Sport Training, Shanghai University of Sport, Shanghai 200438, P.R. China
| | - Lu Xiao
- School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, P.R. China
| | - Hongxia Duan
- School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, P.R. China
| | - Weibing Wu
- Department of Sports Medicine, Shanghai University of Sport, Shanghai 200438, P.R. China
| | - Xiaodan Liu
- School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, P.R. China
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8
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Wang YF, Sun XF, Han ZL, Li L, Ge W, Zhao Y, De Felici M, Shen W, Cheng SF. Protective effects of melatonin against nicotine-induced disorder of mouse early folliculogenesis. Aging (Albany NY) 2019; 10:463-480. [PMID: 29615536 PMCID: PMC5892698 DOI: 10.18632/aging.101405] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Accepted: 03/22/2018] [Indexed: 02/07/2023]
Abstract
In this paper, we show that neonatal mice injected for five consecutive days with nicotine display impaired germ cell cyst breakdown and primordial follicle assembly resulting in decreased ovarian reserve lasting until sex maturation age. The effects of nicotine on the pups ovaries were associated with decreased expression of oocyte specific genes such as Nobox, Lhx8, Figlα and Sohlh2. Moreover, the ovaries of pups injected with nicotine showed increased level of cell oxidative stress and autophagic markers (upregulation of AMPKα-1, increased ratio LC3-II/LC3-I, downregulation of AKT and mTOR). Noteworthy, all these effects were counteracted by the administration of the hormone melatonin in 1 μM. In vitro culture of 0 dpp ovaries for 5 days in the presence of 10 μM nicotine reproduced its effect on germ cell cyst breakdown and primordial follicle assembly, furthermore it also revealing about 20% reduction of somatic cells proliferation, and these effects was prevented when melatonin was added to the medium. Taken together these results show that nicotine exposure can adversely affect the establishment of the ovarian reserve in the mouse likely by locally inducing cellular stress altering the primordial follicle assembly and that melatonin, however, is able to counteract such effects.
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Affiliation(s)
- Yu-Feng Wang
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China
| | - Xiao-Feng Sun
- College of Life Sciences, Institute of Reproductive Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Ze-Li Han
- The First Affiliated Hospital of Chinese PLA General Hospital, Beijing 100039, China
| | - Lan Li
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China.,College of Life Sciences, Institute of Reproductive Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Wei Ge
- College of Life Sciences, Institute of Reproductive Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Yong Zhao
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China.,College of Life Sciences, Institute of Reproductive Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Massimo De Felici
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Rome 00133, Italy
| | - Wei Shen
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China.,College of Life Sciences, Institute of Reproductive Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Shun-Feng Cheng
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China.,College of Life Sciences, Institute of Reproductive Sciences, Qingdao Agricultural University, Qingdao 266109, China
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9
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Muller PDT, Barbosa GW, O'Donnell DE, Neder JA. Cardiopulmonary and Muscular Interactions: Potential Implications for Exercise (In)tolerance in Symptomatic Smokers Without Chronic Obstructive Pulmonary Disease. Front Physiol 2019; 10:859. [PMID: 31354517 PMCID: PMC6635481 DOI: 10.3389/fphys.2019.00859] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Accepted: 06/20/2019] [Indexed: 12/15/2022] Open
Abstract
Smoking and physical inactivity are important preventable causes of disability and early death worldwide. Reduced exercise tolerance has been described in smokers, even in those who do not fulfill the extant physiological criteria for chronic obstructive pulmonary disease (COPD) and are not particularly sedentary. In this context, it is widely accepted that exercise capacity depends on complex cardio-pulmonary interactions which support oxygen (O2) delivery to muscle mitochondria. Although peripheral muscular factors, O2 transport disturbances (including the effects of increased carboxyhemoglobin) and autonomic nervous system unbalance have been emphasized, other derangements have been more recently described, including early microscopic emphysema, pulmonary microvascular disease, ventilatory and gas exchange inefficiency, and left ventricular diastolic dysfunction. Using an integrative physiological approach, the present review summarizes the recent advances in knowledge on the effects of smoking on the lung-heart-muscle axis under the stress of exercise. Special attention is given to the mechanisms connecting physiological abnormalities such as early cardio-pulmonary derangements, inadequate oxygen delivery and utilization, and generalized bioenergetic disturbances at the muscular level with the negative sensations (sense of heightened muscle effort and breathlessness) that may decrease the tolerance of smokers to physical exercise. A deeper understanding of the systemic effects of smoking in subjects who did not (yet) show evidences of COPD and ischemic heart disease - two devastating smoking related diseases - might prove instrumental to fight their ever-growing burden.
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Affiliation(s)
- Paulo de Tarso Muller
- Laboratory of Respiratory Pathophysiology, Respiratory Division, Department of Medicine, Federal University of Mato Grosso do Sul, Campo Grande, Brazil
| | - Gisele Walter Barbosa
- Laboratory of Respiratory Pathophysiology, Respiratory Division, Department of Medicine, Federal University of Mato Grosso do Sul, Campo Grande, Brazil
| | - Denis E O'Donnell
- Laboratory of Clinical Exercise Physiology, Respiratory Investigation Unit, Division of Respiratory and Critical Care Medicine, Department of Medicine, Queen's University, Kingston, ON, Canada
| | - J Alberto Neder
- Laboratory of Clinical Exercise Physiology, Respiratory Investigation Unit, Division of Respiratory and Critical Care Medicine, Department of Medicine, Queen's University, Kingston, ON, Canada
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Ramos CDO, Campos KKD, Costa GDP, Cangussú SD, Talvani A, Bezerra FS. Taurine treatment decreases inflammation and oxidative stress in lungs of adult mice exposed to cigarette smoke. Regul Toxicol Pharmacol 2018; 98:50-57. [PMID: 30026134 DOI: 10.1016/j.yrtph.2018.07.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2018] [Revised: 07/12/2018] [Accepted: 07/13/2018] [Indexed: 02/02/2023]
Abstract
Taurine is the major free amino acid found in mammalian cells and is known to be an antioxidant and membrane-stabilizing agent. This study aimed to evaluate the effects of taurine on oxidative stress and inflammatory response in the lungs of mice exposed to cigarette smoke. Fifty male C57BL/6 mice were divided into 5 groups: control group (CG), vehicle group (VG), taurine group (TG), cigarette smoke group (CSG), and cigarette smoke + taurine group (CSTG). For five consecutive days, CSG and CSTG were exposed to 4 cigarettes 3 times a day. Taurine administration was able to reduce total leukocytes in bronchoalveolar lavage fluid in CSTG compared to CSG. There was an increase in antioxidant superoxide dismutase and catalase activity in CSG compared to that in CG and TG, and a decrease in CSTG compared to CSG. There was an increase in the concentration of TNF and IL-17 in CSG and CSTG compared to CG and TG. There was an increase in the concentration of IL-22 in CSG compared to CG and TG, and a decrease in CSTG compared to CSG. The administration of taurine has been shown to reduce the inflammation and oxidative stress induced by short-term exposure to cigarette smoke.
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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
| | - 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
| | - 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
| | - Sílvia Dantas Cangussú
- 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
| | - 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.
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11
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Wang Y, Liu J, Zhou JS, Huang HQ, Li ZY, Xu XC, Lai TW, Hu Y, Zhou HB, Chen HP, Ying SM, Li W, Shen HH, Chen ZH. MTOR Suppresses Cigarette Smoke-Induced Epithelial Cell Death and Airway Inflammation in Chronic Obstructive Pulmonary Disease. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2018; 200:2571-2580. [PMID: 29507104 DOI: 10.4049/jimmunol.1701681] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Accepted: 02/12/2018] [Indexed: 12/17/2023]
Abstract
Airway epithelial cell death and inflammation are pathological features of chronic obstructive pulmonary disease (COPD). Mechanistic target of rapamycin (MTOR) is involved in inflammation and multiple cellular processes, e.g., autophagy and apoptosis, but little is known about its function in COPD pathogenesis. In this article, we illustrate how MTOR regulates cigarette smoke (CS)-induced cell death, airway inflammation, and emphysema. Expression of MTOR was significantly decreased and its suppressive signaling protein, tuberous sclerosis 2 (TSC2), was increased in the airway epithelium of human COPD and in mouse lungs with chronic CS exposure. In human bronchial epithelial cells, CS extract (CSE) activated TSC2, inhibited MTOR, and induced autophagy. The TSC2-MTOR axis orchestrated CSE-induced autophagy, apoptosis, and necroptosis in human bronchial epithelial cells; all of which cooperatively regulated CSE-induced inflammatory cytokines IL-6 and IL-8 through the NF-κB pathway. Mice with a specific knockdown of Mtor in bronchial or alveolar epithelial cells exhibited significantly augmented airway inflammation and airspace enlargement in response to CS exposure, accompanied with enhanced levels of autophagy, apoptosis, and necroptosis in the lungs. Taken together, these data demonstrate that MTOR suppresses CS-induced inflammation and emphysema-likely through modulation of autophagy, apoptosis, and necroptosis-and thus suggest that activation of MTOR may represent a novel therapeutic strategy for COPD.
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Affiliation(s)
- Yong Wang
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China; and
| | - Juan Liu
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China; and
| | - Jie-Sen Zhou
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China; and
| | - Hua-Qiong Huang
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China; and
| | - Zhou-Yang Li
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China; and
| | - Xu-Chen Xu
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China; and
| | - Tian-Wen Lai
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China; and
| | - Yue Hu
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China; and
| | - Hong-Bin Zhou
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China; and
| | - Hai-Pin Chen
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China; and
| | - Song-Min Ying
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China; and
| | - Wen Li
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China; and
| | - Hua-Hao Shen
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China; and
- State Key Laboratory of Respiratory Disease, Guangzhou Medical University, Guangzhou 510120, China
| | - Zhi-Hua Chen
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China; and
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Robison P, Sussan TE, Chen H, Biswal S, Schneider MF, Hernández-Ochoa EO. Impaired calcium signaling in muscle fibers from intercostal and foot skeletal muscle in a cigarette smoke-induced mouse model of COPD. Muscle Nerve 2017; 56:282-291. [PMID: 27862020 PMCID: PMC5426995 DOI: 10.1002/mus.25466] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Revised: 11/02/2016] [Accepted: 11/09/2016] [Indexed: 01/23/2023]
Abstract
INTRODUCTION Respiratory and locomotor skeletal muscle dysfunction are common findings in chronic obstructive pulmonary disease (COPD); however, the mechanisms that cause muscle impairment in COPD are unclear. Because Ca2+ signaling in excitation-contraction (E-C) coupling is important for muscle activity, we hypothesized that Ca2+ dysregulation could contribute to muscle dysfunction in COPD. METHODS Intercostal and flexor digitorum brevis muscles from control and cigarette smoke-exposed mice were investigated. We used single cell Ca2+ imaging and Western blot assays to assess Ca2+ signals and E-C coupling proteins. RESULTS We found impaired Ca2+ signals in muscle fibers from both muscle types, without significant changes in releasable Ca2+ or in the expression levels of E-C coupling proteins. CONCLUSIONS Ca2+ dysregulation may contribute or accompany respiratory and locomotor muscle dysfunction in COPD. These findings are of significance to the understanding of the pathophysiological course of COPD in respiratory and locomotor muscles. Muscle Nerve 56: 282-291, 2017.
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Affiliation(s)
- Patrick Robison
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, Maryland 21201, USA
- Department of Physiology, Pennsylvania Muscle Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Thomas E. Sussan
- Department of Environmental Health Sciences, Johns Hopkins University School of Public Health, Baltimore, Maryland 21205, USA
| | - Hegang Chen
- Division of Biostatistics and Bioinformatics, Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Shyam Biswal
- Department of Environmental Health Sciences, Johns Hopkins University School of Public Health, Baltimore, Maryland 21205, USA
| | - Martin F. Schneider
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, Maryland 21201, USA
| | - Erick O. Hernández-Ochoa
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, Maryland 21201, USA
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Vasconcelos TBD, Araújo FYRD, Pinho JPMD, Soares PMG, Bastos VPD. Effects of passive inhalation of cigarette smoke on structural and functional parameters in the respiratory system of guinea pigs. J Bras Pneumol 2016; 42:333-340. [PMID: 27812632 PMCID: PMC5094869 DOI: 10.1590/s1806-37562015000000342] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2016] [Accepted: 07/31/2016] [Indexed: 11/21/2022] Open
Abstract
Objective: To evaluate the effects of passive inhalation of cigarette smoke on the respiratory system of guinea pigs. Methods: Male guinea pigs were divided into two groups: control and passive smoking, the latter being exposed to the smoke of ten cigarettes for 20 min in the morning, afternoon and evening (30 cigarettes/day) for five days. After that period, inflammatory parameters were studied by quantifying mesenteric mast cell degranulation, as well as oxidative stress, in BAL fluid. In addition, we determined MIP, MEP, and mucociliary transport (in vivo), as well as tracheal contractility response (in vitro). Results: In comparison with the control group, the passive smoking group showed a significant increase in mast cell degranulation (19.75 ± 3.77% vs. 42.53 ± 0.42%; p < 0.001) and in the levels of reduced glutathione (293.9 ± 19.21 vs. 723.7 ± 67.43 nM/g of tissue; p < 0.05); as well as a significant reduction in mucociliary clearance (p < 0.05), which caused significant changes in pulmonary function (in MIP and MEP; p < 0.05 for both) and airway hyperreactivity. Conclusions: Passive inhalation of cigarette smoke caused significant increases in mast cell degranulation and oxidative stress. This inflammatory process seems to influence the decrease in mucociliary transport and to cause changes in pulmonary function, leading to tracheal hyperreactivity.
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da Silva EFG, Krause GC, Lima KG, Haute GV, Pedrazza L, Mesquita FC, Basso BS, Velasquez AC, Nunes FB, de Oliveira JR. Rapamycin and fructose-1,6-bisphosphate reduce the HEPG2 cell proliferation via increase of free radicals and apoptosis. Oncol Rep 2016; 36:2647-2652. [PMID: 27665945 DOI: 10.3892/or.2016.5111] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2016] [Accepted: 06/21/2016] [Indexed: 11/06/2022] Open
Abstract
Hepatocellular carcinoma is the most prevalent type of tumor among primary tumors affecting the liver. Rapamycin is currently used as a basis for chemotherapy in the treatment of cancers, including the liver. Because it shows several adverse effects, minimizing these effects without compromising efficacy is important. In this sense other drugs may be used concomitantly. One of these drugs is fructose-1,6-bisphosphate (FBP), which has shown therapeutic effect in various pathological situations, having antioxidant and anti-inflammatory proprieties. The objective of the present study was to evaluate the activity of rapamycin in combination with the FBP in HepG2 cell proliferation and the mechanisms involved. HepG2 cells were analyzed after 72 h of treatment with both drugs. Cell proliferation, cytotoxicity, cytokines, apoptosis, senescence, autophagy and oxidative stress were accessed. Ιt was demonstrated that the combination is more efficient than the single use of substances, because subtherapeutic doses of rapamycin, when associated to FBP become effective, reducing cell proliferation, through a significant increase in the production of tiobarbituric acid reactive substances (TBARS), suggesting that this might be the cause of death by apoptosis. According to these results, we believe that the association of both drugs may be a promising choice for the treatment of hepatocarcinoma.
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Affiliation(s)
- Elisa Feller Gonçalves da Silva
- Laboratory of Cellular Biophysics and Inflammation, Department of Cellular and Molecular Biology, School of Biosciences, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, CEP 90619‑900, Brazil
| | - Gabriele Catyana Krause
- Laboratory of Cellular Biophysics and Inflammation, Department of Cellular and Molecular Biology, School of Biosciences, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, CEP 90619‑900, Brazil
| | - Kelly Goulart Lima
- Laboratory of Cellular Biophysics and Inflammation, Department of Cellular and Molecular Biology, School of Biosciences, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, CEP 90619‑900, Brazil
| | - Gabriela Viegas Haute
- Laboratory of Cellular Biophysics and Inflammation, Department of Cellular and Molecular Biology, School of Biosciences, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, CEP 90619‑900, Brazil
| | - Leonardo Pedrazza
- Laboratory of Cellular Biophysics and Inflammation, Department of Cellular and Molecular Biology, School of Biosciences, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, CEP 90619‑900, Brazil
| | - Fernanda Cristina Mesquita
- Laboratory of Cellular Biophysics and Inflammation, Department of Cellular and Molecular Biology, School of Biosciences, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, CEP 90619‑900, Brazil
| | - Bruno Souza Basso
- Laboratory of Cellular Biophysics and Inflammation, Department of Cellular and Molecular Biology, School of Biosciences, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, CEP 90619‑900, Brazil
| | - Anderson Catarina Velasquez
- Laboratory of Cellular Biophysics and Inflammation, Department of Cellular and Molecular Biology, School of Biosciences, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, CEP 90619‑900, Brazil
| | - Fernanda Bordignon Nunes
- Laboratory of Cellular Biophysics and Inflammation, Department of Cellular and Molecular Biology, School of Biosciences, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, CEP 90619‑900, Brazil
| | - Jarbas Rodrigues de Oliveira
- Laboratory of Cellular Biophysics and Inflammation, Department of Cellular and Molecular Biology, School of Biosciences, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, CEP 90619‑900, Brazil
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Furlong HC, Stämpfli MR, Gannon AM, Foster WG. Cigarette smoke exposure triggers the autophagic cascade via activation of the AMPK pathway in mice. Biol Reprod 2015; 93:93. [PMID: 26377221 PMCID: PMC4711909 DOI: 10.1095/biolreprod.115.132183] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 07/05/2015] [Accepted: 09/03/2015] [Indexed: 01/22/2023] Open
Abstract
We previously demonstrated that cigarette smoke (CS) exposure decreases primordial follicle counts and induces autophagy in ovarian granulosa cells in preference to apoptosis. Therefore, the objective of this study was to investigate molecular targets underlying smoke-induced activation of the reparative autophagy pathway in the ovary. Briefly, ovarian homogenates were prepared from adult female mice exposed to mainstream CS twice daily for 8 wk, using a whole-body exposure system. A gene array revealed that CS exposure induced a greater than 2-fold significant increase in the expression of proautophagic genes Cdkn1b, Map1lc3a, Bad, and Sqstm1/p62. A significant increase in Prkaa2, Pik3c3, and Maplc31b expression, as well as a significant decrease in Akt1 and Mtor expression, was detected by quantitative PCR. The 5'-AMP-activated protein kinase catalytic subunit (AMPK) alpha1 + alpha2 and ATG7 protein expression was significantly increased, whereas AKT1, mTOR, CDKN1B/p27, and CXCR4 proteins were significantly decreased in CS exposed versus control ovaries. Up-regulation of AMPK alpha1 + alpha2, a known initiator of autophagic signaling, and ATG7 further suggests activation of the autophagy cascade. Two prosurvival factors, AKT and mTOR, were decreased in expression, an outcome that favors induction of the autophagy pathway, whereas decreased levels of CDKN1B is suggestive of cell cycle dysregulation. In summary, our data suggest that CS exposure induces ovarian follicle loss through induction of the autophagic cascade via the AMPK pathway together with inhibition of antiautophagic markers AKT and mTOR. We further postulate that toxicant-induced dysregulation of reparative autophagy is a novel pathway central to impaired follicle development and subfertility.
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Affiliation(s)
- Hayley C Furlong
- Department of Obstetrics and Gynecology, McMaster University, Hamilton, Ontario, Canada
| | - Martin R Stämpfli
- Department of Pathology and Molecular Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Anne M Gannon
- Department of Obstetrics and Gynecology, McMaster University, Hamilton, Ontario, Canada
| | - Warren G Foster
- Department of Obstetrics and Gynecology, McMaster University, Hamilton, Ontario, Canada
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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.
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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.
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