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Stanfill SB, Hecht SS, Joerger AC, González PJ, Maia LB, Rivas MG, Moura JJG, Gupta AK, Le Brun NE, Crack JC, Hainaut P, Sparacino-Watkins C, Tyx RE, Pillai SD, Zaatari GS, Henley SJ, Blount BC, Watson CH, Kaina B, Mehrotra R. From cultivation to cancer: formation of N-nitrosamines and other carcinogens in smokeless tobacco and their mutagenic implications. Crit Rev Toxicol 2023; 53:658-701. [PMID: 38050998 DOI: 10.1080/10408444.2023.2264327] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Accepted: 09/20/2023] [Indexed: 12/07/2023]
Abstract
Tobacco use is a major cause of preventable morbidity and mortality globally. Tobacco products, including smokeless tobacco (ST), generally contain tobacco-specific N-nitrosamines (TSNAs), such as N'-nitrosonornicotine (NNN) and 4-(methylnitrosamino)-1-(3-pyridyl)-butanone (NNK), which are potent carcinogens that cause mutations in critical genes in human DNA. This review covers the series of biochemical and chemical transformations, related to TSNAs, leading from tobacco cultivation to cancer initiation. A key aim of this review is to provide a greater understanding of TSNAs: their precursors, the microbial and chemical mechanisms that contribute to their formation in ST, their mutagenicity leading to cancer due to ST use, and potential means of lowering TSNA levels in tobacco products. TSNAs are not present in harvested tobacco but can form due to nitrosating agents reacting with tobacco alkaloids present in tobacco during certain types of curing. TSNAs can also form during or following ST production when certain microorganisms perform nitrate metabolism, with dissimilatory nitrate reductases converting nitrate to nitrite that is then released into tobacco and reacts chemically with tobacco alkaloids. When ST usage occurs, TSNAs are absorbed and metabolized to reactive compounds that form DNA adducts leading to mutations in critical target genes, including the RAS oncogenes and the p53 tumor suppressor gene. DNA repair mechanisms remove most adducts induced by carcinogens, thus preventing many but not all mutations. Lastly, because TSNAs and other agents cause cancer, previously documented strategies for lowering their levels in ST products are discussed, including using tobacco with lower nornicotine levels, pasteurization and other means of eliminating microorganisms, omitting fermentation and fire-curing, refrigerating ST products, and including nitrite scavenging chemicals as ST ingredients.
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Affiliation(s)
- Stephen B Stanfill
- Tobacco and Volatiles Branch, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Stephen S Hecht
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN, USA
| | - Andreas C Joerger
- Structural Genomics Consortium (SGC), Institute of Pharmaceutical Chemistry, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Pablo J González
- Department of Physics, Universidad Nacional Litoral, and CONICET, Santa Fe, Argentina
| | - Luisa B Maia
- Department of Chemistry, LAQV, REQUIMTE, NOVA School of Science and Technology (FCT NOVA), Caparica, Portugal
| | - Maria G Rivas
- Department of Physics, Universidad Nacional Litoral, and CONICET, Santa Fe, Argentina
| | - José J G Moura
- Department of Chemistry, LAQV, REQUIMTE, NOVA School of Science and Technology (FCT NOVA), Caparica, Portugal
| | | | - Nick E Le Brun
- School of Chemistry, Centre for Molecular and Structural Biochemistry, University of East Anglia, Norwich, UK
| | - Jason C Crack
- School of Chemistry, Centre for Molecular and Structural Biochemistry, University of East Anglia, Norwich, UK
| | - Pierre Hainaut
- Institute for Advanced Biosciences, Grenoble Alpes University, Grenoble, France
| | - Courtney Sparacino-Watkins
- University of Pittsburgh, School of Medicine, Division of Pulmonary Allergy and Critical Care Medicine, Vascular Medicine Institute, PA, USA
| | - Robert E Tyx
- Tobacco and Volatiles Branch, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Suresh D Pillai
- Department of Food Science & Technology, National Center for Electron Beam Research, Texas A&M University, College Station, TX, USA
| | - Ghazi S Zaatari
- Department of Pathology and Laboratory Medicine, American University of Beirut, Beirut, Lebanon
| | - S Jane Henley
- Division of Cancer Prevention and Control, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Benjamin C Blount
- Tobacco and Volatiles Branch, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Clifford H Watson
- Tobacco and Volatiles Branch, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Bernd Kaina
- Institute of Toxicology, University Medical Center, Mainz, Germany
| | - Ravi Mehrotra
- Centre for Health, Innovation and Policy Foundation, Noida, India
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Schupper AJ, Khorasanizadeh M, Rossitto CP, Foster LD, Kellner CP, Suarez JI, Qureshi AI, Majidi S. Cigarette Smoking as a Risk Factor for Hematoma Expansion in Primary Intracerebral Hemorrhage: Analysis From a Randomized Clinical Trial. J Am Heart Assoc 2023; 12:e030431. [PMID: 37522176 PMCID: PMC10492975 DOI: 10.1161/jaha.123.030431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 06/26/2023] [Indexed: 08/01/2023]
Abstract
Background Cigarette smoking is a well-known risk factor for ischemic and hemorrhagic stroke. We evaluated the impact of smoking status on hematoma expansion and clinical outcome in patients with primary intracerebral hemorrhage. Methods and Results This is a post hoc exploratory analysis of the ATACH (Antihypertensive Treatment at Acute Cerebral Hemorrhage)-2 trial. Patients with intracerebral hemorrhage were randomized into intensive blood pressure lowering (systolic blood pressure, <139 mm Hg) versus standard blood pressure lowering (systolic blood pressure, 140-179 mm Hg) in this study. We compared the demographic characteristics; hematoma size, location, and expansion rate; and clinical outcome based on subjects' smoking status. Of a total of 914 patients in the trial with known smoking status, 439 (48%) patients were ever smokers (264 current smokers and 175 former smokers). Current and former smokers were younger and more likely to be men. Baseline Glasgow Coma Scale score and initial hematoma size did not vary based on smoking status. Ever smokers had higher rates of thalamic hemorrhage (42% versus 34%) and intraventricular hemorrhage (29% versus 23%); this rate was highest among former smokers versus current smokers (49% versus 35%, respectively). Ever smokers had a higher rate of hematoma expansion in 24 hours (adjusted relative risk [RR] [95% CI], 1.46 [1.08-1.96]) compared with nonsmokers on multivariate analysis. There was no significant difference in the rate of death and disability at 90 days between the 2 groups (adjusted RR [95% CI], 1.18 [0.998-1.40]). Conclusions Our analysis demonstrates cigarette smoking as an independent predictor for hematoma expansion. There was no significant difference in death and disability based on smoking status.
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Affiliation(s)
| | | | | | - Lydia D. Foster
- Department of Public Health SciencesMedical University of South CarolinaCharlestonSC
| | | | - Jose I. Suarez
- Department of NeurologyJohns Hopkins HospitalBaltimoreMD
| | - Adnan I. Qureshi
- Zeenat Qureshi Stroke Institute and Department of NeurologyUniversity of MissouriColumbiaMO
| | - Shahram Majidi
- Department of NeurosurgeryMount Sinai Health SystemNew YorkNY
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3
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Benowitz NL, Goniewicz ML, Halpern-Felsher B, Krishnan-Sarin S, Ling PM, O'Connor RJ, Pentz MA, Robertson RM, Bhatnagar A. Tobacco product use and the risks of SARS-CoV-2 infection and COVID-19: current understanding and recommendations for future research. THE LANCET. RESPIRATORY MEDICINE 2022; 10:900-915. [PMID: 35985357 PMCID: PMC9381032 DOI: 10.1016/s2213-2600(22)00182-5] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 01/27/2022] [Accepted: 05/03/2022] [Indexed: 01/11/2023]
Abstract
Heterogeneity in the clinical presentation of SARS-CoV-2 infection and COVID-19 progression underscores the urgent need to identify individual-level susceptibility factors that affect infection vulnerability and disease severity. Tobacco product use is a potential susceptibility factor. In this Personal View, we provide an overview of the findings of peer-reviewed, published studies relating tobacco product use to SARS-CoV-2 infection and COVID-19 outcomes, with most studies focusing on cigarette smoking in adults. Findings pertaining to the effects of tobacco product use on the incidence of SARS-CoV-2 infection are inconsistent. However, evidence supports a role for cigarette smoking in increasing the risk of poor COVID-19 outcomes, including hospital admission, progression in disease severity, and COVID-19-related mortality. We discuss the potential effects of tobacco use behaviour on SARS-CoV-2 transmission and infection, and highlight the pathophysiological changes associated with cigarette smoking that could promote SARS-CoV-2 infection and increased disease severity. We consider the biological mechanisms by which nicotine and other tobacco product constituents might affect immune and inflammatory responses to SARS-CoV-2 infection. Finally, we identify current knowledge gaps and suggest priorities for research to address acute and post-acute health outcomes of COVID-19 during and after the pandemic.
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Affiliation(s)
- Neal L Benowitz
- Department of Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Maciej L Goniewicz
- Department of Health Behavior, Roswell Park Comprehensive Cancer Center, Buffalo, NY, USA
| | | | | | - Pamela M Ling
- Department of Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Richard J O'Connor
- Department of Health Behavior, Roswell Park Comprehensive Cancer Center, Buffalo, NY, USA
| | - Mary Ann Pentz
- Department of Population and Public Health Sciences, University of Southern California, Los Angeles, CA, USA
| | - Rose Marie Robertson
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Aruni Bhatnagar
- Department of Medicine, University of Louisville, Louisville, KY, USA.
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4
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Nazar-Zadeh M, Jalili C, Nikgoftar Fathi A, Ghanbari A, Bakhtiari M. Royal-jelly-based apitherapy can attenuate damages to male reproductive parameter following nicotine administration. Animal Model Exp Med 2022; 5:133-140. [PMID: 35274495 PMCID: PMC9043720 DOI: 10.1002/ame2.12217] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 02/08/2022] [Accepted: 02/09/2022] [Indexed: 12/24/2022] Open
Abstract
Background Nicotine administration can generate severe oxidative stress and lipid peroxidation. Royal jelly, with its antioxidant properties, acts as a scavenger of reactive oxygen species. This study describes the apitherapy effects of royal jelly on testicular damage following nicotine administration. Methods Forty‐eight male BALB/c mice were divided into 8 groups (n = 6): saline, 3 different doses of royal jelly (100, 150, and 200 mg/kg body weight (BW) per day), nicotine (1.5 mg/kg), and 3 different groups of Nic + Roy (1.5 mg/kg of Nic + 100, 150, and 200 mg/kg BW per day of royal jelly). Nicotine was administrated intraperitoneally, and royal jelly was prescribed orally for 10 consecutive days. Serum levels of hormones (testosterone, luteinizing hormone, and follicle‐stimulating hormone), total antioxidant capacity, nitric oxide (NO) status, malondialdehyde levels, sperm DNA fragmentation, sperm parameters, histopathological changes (H&E staining), immunohistochemistry against apoptotic proteins, and gene expression of Bcl‐2, p53, Caspase‐3, and Nrf2 (real‐time PCR) were assessed to evaluate the molecular and histological changes. Results Hormone levels, sperm parameters, and status of antioxidants were decreased significantly (p < .05) following nicotine administration. Moreover, royal jelly treatment normalized hormonal and antioxidant characteristics, decreased apoptotic gene expression, increased Nfr2 gene expression, and restored histopathological alteration to the physiological status significantly (p < .05). Conclusion Royal jelly upregulates the antioxidant status, inhibits the mitochondrial‐dependent apoptosis pathway, and increases the rate of proliferation. This therapeutic agent effectively protected the testis against nicotine‐associated damages by antioxidant and anti‐apoptotic effects.
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Affiliation(s)
- Mahsa Nazar-Zadeh
- Department of Anatomical Sciences, Medical School, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Cyrus Jalili
- Medical Biology Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Amene Nikgoftar Fathi
- Department of Anatomical Sciences, Medical School, Arak University of Medical Sciences, Arak, Iran
| | - Ali Ghanbari
- Department of Anatomical Sciences, Medical School, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mitra Bakhtiari
- Department of Anatomical Sciences, Medical School, Kermanshah University of Medical Sciences, Kermanshah, Iran
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5
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Alarabi AB, Lozano PA, Khasawneh FT, Alshbool FZ. The effect of emerging tobacco related products and their toxic constituents on thrombosis. Life Sci 2022; 290:120255. [PMID: 34953893 PMCID: PMC9118784 DOI: 10.1016/j.lfs.2021.120255] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 12/07/2021] [Accepted: 12/14/2021] [Indexed: 02/03/2023]
Abstract
Although conventional cigarette smoking is declining, emerging tobacco related products (ETRPs) are currently gaining ground, especially among the youth. These products include electronic cigarettes, waterpipes/hookah, cigars/cigarillo, smokeless tobacco, and heat-not-burn cigarettes. The observed increase in the use of ETRPs is multifactorial and complex but appears to be mainly driven by efforts from the major tobacco companies to reinvent themselves, and present more appealing and allegedly safe(r) tobacco products. However, it is becoming apparent that these products produce substantial amounts of toxic chemicals, many of which have been shown to exert negative health effects, including in the context of the cardiovascular system. Thus, there has been research efforts, albeit limited in general, to characterize the health impact of these products on occlusive/thrombotic cardiovascular diseases (CVD). In this review, we will discuss the potential impact of ETRPs on thrombosis-based CVD. Specifically, we will review how these products and the major chemicals they produce and/or emit can trigger key players in the process of thrombosis, namely inflammation, oxidative stress, platelets, coagulation, and the vascular endothelium, and the relationship between these effects.
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Affiliation(s)
- Ahmed B Alarabi
- Department of Pharmacy Practice, Irma Lerma Rangel College of Pharmacy Texas A&M University, Kingsville, TX, USA
| | - Patricia A Lozano
- Department of Pharmacy Practice, Irma Lerma Rangel College of Pharmacy Texas A&M University, Kingsville, TX, USA
| | - Fadi T Khasawneh
- Department of Pharmaceutical Sciences, Irma Lerma Rangel College of Pharmacy Texas A&M University, Kingsville, TX, USA.
| | - Fatima Z Alshbool
- Department of Pharmacy Practice, Irma Lerma Rangel College of Pharmacy Texas A&M University, Kingsville, TX, USA.
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6
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Zelko IN, Taylor BS, Das TP, Watson WH, Sithu ID, Wahlang B, Malovichko MV, Cave MC, Srivastava S. Effect of vinyl chloride exposure on cardiometabolic toxicity. ENVIRONMENTAL TOXICOLOGY 2022; 37:245-255. [PMID: 34717031 PMCID: PMC8724461 DOI: 10.1002/tox.23394] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 07/09/2021] [Accepted: 10/22/2021] [Indexed: 05/08/2023]
Abstract
Vinyl chloride (VC) is an organochlorine mainly used to manufacture its polymer polyvinyl chloride, which is extensively used in the manufacturing of consumer products. Recent studies suggest that chronic low dose VC exposure affects glucose homeostasis in high fat diet-fed mice. Our data suggest that even in the absence of high fat diet, exposure to VC (0.8 ppm, 6 h/day, 5 day/week, for 12 weeks) induces glucose intolerance (1.0 g/kg, i.p.) in male C57BL/6 mice. This was accompanied with the depletion of hepatic glutathione and a modest increase in lung interstitial macrophages. VC exposure did not affect the levels of circulating immune cells, endothelial progenitor cells, platelet-immune cell aggregates, and cytokines and chemokines. The acute challenge of VC-exposed mice with LPS did not affect lung immune cell composition or plasma IL-6. To examine the effect of VC exposure on vascular inflammation and atherosclerosis, LDL receptor-KO mice on C57BL/6 background maintained on western diet were exposed to VC for 12 weeks (0.8 ppm, 6 h/day, 5 day/week). Unlike the WT C57BL/6 mice, VC exposure did not affect glucose tolerance in the LDL receptor-KO mice. Plasma cytokines, lesion area in the aortic valve, and markers of lesional inflammation in VC-exposed LDL receptor-KO mice were comparable with the air-exposed controls. Collectively, despite impaired glucose tolerance and modest pulmonary inflammation, chronic low dose VC exposure does not affect surrogate markers of cardiovascular injury, LPS-induced acute inflammation in C57BL/6 mice, and chronic inflammation and atherosclerosis in the LDL receptor-KO mice.
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Affiliation(s)
- Igor N. Zelko
- Superfund Research Center, University of Louisville, KY 40202
- Envirome Institute, University of Louisville, KY 40202
- Department of Medicine, Division of Environmental Medicine, University of Louisville, KY 40202
| | - Breandon S. Taylor
- Superfund Research Center, University of Louisville, KY 40202
- Envirome Institute, University of Louisville, KY 40202
- Department of Medicine, Division of Environmental Medicine, University of Louisville, KY 40202
- Department of Pharmacology and Toxicology, University of Louisville, KY 40202
| | - Trinath P. Das
- Superfund Research Center, University of Louisville, KY 40202
- Envirome Institute, University of Louisville, KY 40202
- Department of Medicine, Division of Environmental Medicine, University of Louisville, KY 40202
| | - Walter H. Watson
- Department of Pharmacology and Toxicology, University of Louisville, KY 40202
- Hepatobiology and Toxicology Program, University of Louisville, KY 40202
- Department of Medicine, Division of Gastroenterology, Hepatology and Nutrition, University of Louisville, KY 40202
| | - Israel D. Sithu
- Superfund Research Center, University of Louisville, KY 40202
- Envirome Institute, University of Louisville, KY 40202
- Department of Medicine, Division of Environmental Medicine, University of Louisville, KY 40202
- Department of Pharmacology and Toxicology, University of Louisville, KY 40202
| | - Banrida Wahlang
- Superfund Research Center, University of Louisville, KY 40202
- Department of Pharmacology and Toxicology, University of Louisville, KY 40202
- Hepatobiology and Toxicology Program, University of Louisville, KY 40202
| | - Marina V. Malovichko
- Superfund Research Center, University of Louisville, KY 40202
- Envirome Institute, University of Louisville, KY 40202
- Department of Medicine, Division of Environmental Medicine, University of Louisville, KY 40202
| | - Matthew C. Cave
- Superfund Research Center, University of Louisville, KY 40202
- Envirome Institute, University of Louisville, KY 40202
- Department of Pharmacology and Toxicology, University of Louisville, KY 40202
- Hepatobiology and Toxicology Program, University of Louisville, KY 40202
| | - Sanjay Srivastava
- Superfund Research Center, University of Louisville, KY 40202
- Envirome Institute, University of Louisville, KY 40202
- Department of Medicine, Division of Environmental Medicine, University of Louisville, KY 40202
- Department of Pharmacology and Toxicology, University of Louisville, KY 40202
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7
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Malovichko MV, Abplanalp WT, McFall SA, Taylor BS, Wickramasinghe NS, Sithu ID, Zelko IN, Uchida S, Hill BG, Sutaria SR, Nantz MH, Bhatnagar A, Conklin DJ, O'Toole TE, Srivastava S. Subclinical markers of cardiovascular toxicity of benzene inhalation in mice. Toxicol Appl Pharmacol 2021; 431:115742. [PMID: 34624356 PMCID: PMC8647905 DOI: 10.1016/j.taap.2021.115742] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 09/29/2021] [Accepted: 10/02/2021] [Indexed: 12/11/2022]
Abstract
Benzene is a ubiquitous environmental pollutant. Recent population-based studies suggest that benzene exposure is associated with an increased risk for cardiovascular disease. However, it is unclear whether benzene exposure by itself is sufficient to induce cardiovascular toxicity. We examined the effects of benzene inhalation (50 ppm, 6 h/day, 5 days/week, 6 weeks) or HEPA-filtered air exposure on the biomarkers of cardiovascular toxicity in male C57BL/6J mice. Benzene inhalation significantly increased the biomarkers of endothelial activation and injury including endothelial microparticles, activated endothelial microparticles, endothelial progenitor cell microparticles, lung endothelial microparticles, and activated lung and endothelial microparticles while having no effect on circulating levels of endothelial adhesion molecules, endothelial selectins, and biomarkers of angiogenesis. To understand how benzene may induce endothelial injury, we exposed human aortic endothelial cells to benzene metabolites. Of the metabolites tested, trans,trans-mucondialdehyde (10 μM, 18h) was the most toxic. It induced caspases-3, -7 and -9 (intrinsic pathway) activation and enhanced microparticle formation by 2.4-fold. Levels of platelet-leukocyte aggregates, platelet macroparticles, and a proportion of CD4+ and CD8+ T-cells were also significantly elevated in the blood of the benzene-exposed mice. We also found that benzene exposure increased the transcription of genes associated with endothelial cell and platelet activation in the liver; and induced inflammatory genes and suppressed cytochrome P450s in the lungs and the liver. Together, these data suggest that benzene exposure induces endothelial injury, enhances platelet activation and inflammatory processes; and circulatory levels of endothelial cell and platelet-derived microparticles and platelet-leukocyte aggregates are excellent biomarkers of cardiovascular toxicity of benzene.
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Affiliation(s)
- Marina V Malovichko
- University of Louisville Superfund Research Center, University of Louisville, Louisville, KY 40202, United States of America; American Heart Association-Tobacco Center of Regulatory Science, University of Louisville, Louisville, KY 40202, United States of America; Envirome Institute, University of Louisville, Louisville, KY 40202, United States of America; Department of Medicine, Division of Environmental Medicine, University of Louisville, Louisville, KY 40202, United States of America
| | - Wesley T Abplanalp
- University of Louisville Superfund Research Center, University of Louisville, Louisville, KY 40202, United States of America; Department of Medicine, Division of Environmental Medicine, University of Louisville, Louisville, KY 40202, United States of America
| | - Samantha A McFall
- University of Louisville Superfund Research Center, University of Louisville, Louisville, KY 40202, United States of America; Envirome Institute, University of Louisville, Louisville, KY 40202, United States of America; Department of Medicine, Division of Environmental Medicine, University of Louisville, Louisville, KY 40202, United States of America
| | - Breandon S Taylor
- University of Louisville Superfund Research Center, University of Louisville, Louisville, KY 40202, United States of America; Envirome Institute, University of Louisville, Louisville, KY 40202, United States of America; Department of Medicine, Division of Environmental Medicine, University of Louisville, Louisville, KY 40202, United States of America
| | - Nalinie S Wickramasinghe
- University of Louisville Superfund Research Center, University of Louisville, Louisville, KY 40202, United States of America; American Heart Association-Tobacco Center of Regulatory Science, University of Louisville, Louisville, KY 40202, United States of America; Envirome Institute, University of Louisville, Louisville, KY 40202, United States of America; Department of Medicine, Division of Environmental Medicine, University of Louisville, Louisville, KY 40202, United States of America
| | - Israel D Sithu
- University of Louisville Superfund Research Center, University of Louisville, Louisville, KY 40202, United States of America; American Heart Association-Tobacco Center of Regulatory Science, University of Louisville, Louisville, KY 40202, United States of America; Envirome Institute, University of Louisville, Louisville, KY 40202, United States of America; Department of Medicine, Division of Environmental Medicine, University of Louisville, Louisville, KY 40202, United States of America
| | - Igor N Zelko
- University of Louisville Superfund Research Center, University of Louisville, Louisville, KY 40202, United States of America; American Heart Association-Tobacco Center of Regulatory Science, University of Louisville, Louisville, KY 40202, United States of America; Envirome Institute, University of Louisville, Louisville, KY 40202, United States of America; Department of Medicine, Division of Environmental Medicine, University of Louisville, Louisville, KY 40202, United States of America
| | - Shizuka Uchida
- University of Louisville Superfund Research Center, University of Louisville, Louisville, KY 40202, United States of America; Envirome Institute, University of Louisville, Louisville, KY 40202, United States of America; Department of Medicine, Division of Environmental Medicine, University of Louisville, Louisville, KY 40202, United States of America
| | - Bradford G Hill
- University of Louisville Superfund Research Center, University of Louisville, Louisville, KY 40202, United States of America; Envirome Institute, University of Louisville, Louisville, KY 40202, United States of America; Department of Medicine, Division of Environmental Medicine, University of Louisville, Louisville, KY 40202, United States of America
| | - Saurin R Sutaria
- University of Louisville Superfund Research Center, University of Louisville, Louisville, KY 40202, United States of America; Department of Chemistry, University of Louisville, Louisville, KY 40202, United States of America
| | - Michael H Nantz
- University of Louisville Superfund Research Center, University of Louisville, Louisville, KY 40202, United States of America; Department of Chemistry, University of Louisville, Louisville, KY 40202, United States of America
| | - Aruni Bhatnagar
- University of Louisville Superfund Research Center, University of Louisville, Louisville, KY 40202, United States of America; American Heart Association-Tobacco Center of Regulatory Science, University of Louisville, Louisville, KY 40202, United States of America; Envirome Institute, University of Louisville, Louisville, KY 40202, United States of America; Department of Medicine, Division of Environmental Medicine, University of Louisville, Louisville, KY 40202, United States of America
| | - Daniel J Conklin
- University of Louisville Superfund Research Center, University of Louisville, Louisville, KY 40202, United States of America; American Heart Association-Tobacco Center of Regulatory Science, University of Louisville, Louisville, KY 40202, United States of America; Envirome Institute, University of Louisville, Louisville, KY 40202, United States of America; Department of Medicine, Division of Environmental Medicine, University of Louisville, Louisville, KY 40202, United States of America
| | - Timothy E O'Toole
- University of Louisville Superfund Research Center, University of Louisville, Louisville, KY 40202, United States of America; American Heart Association-Tobacco Center of Regulatory Science, University of Louisville, Louisville, KY 40202, United States of America; Envirome Institute, University of Louisville, Louisville, KY 40202, United States of America; Department of Medicine, Division of Environmental Medicine, University of Louisville, Louisville, KY 40202, United States of America
| | - Sanjay Srivastava
- University of Louisville Superfund Research Center, University of Louisville, Louisville, KY 40202, United States of America; American Heart Association-Tobacco Center of Regulatory Science, University of Louisville, Louisville, KY 40202, United States of America; Envirome Institute, University of Louisville, Louisville, KY 40202, United States of America; Department of Medicine, Division of Environmental Medicine, University of Louisville, Louisville, KY 40202, United States of America.
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8
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Jin L, Conklin DJ. A novel evaluation of endothelial dysfunction ex vivo: "Teaching an Old Drug a New Trick". Physiol Rep 2021; 9:e15120. [PMID: 34755498 PMCID: PMC8579072 DOI: 10.14814/phy2.15120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 10/29/2021] [Indexed: 11/24/2022] Open
Abstract
Cardiovascular disease (CVD) is the leading cause of morbidity and mortality worldwide. Many CVDs begin with endothelium dysfunction (ED), including hypertension, thrombosis, and atherosclerosis. Our assay evaluated ED in isolated murine aorta by quantifying phenylephrine-induced contractions (PE) in the presence of L-NAME, which blocked acetylcholine-induced relaxation (ACh %; >99%). The "L-NAME PE Contraction Ratio" (PECR) was defined as: "PE Tension post-L-NAME" divided by "PE Tension pre-L-NAME." We hypothesized that our novel PE Contraction Ratio would strongly correlate with alterations in endothelium function. Validation 1: PECR and ACh % values of naïve aortas were strongly and positively correlated (PECR vs. ACh %, r2 = 0.91, n = 7). Validation 2: Retrospective analyses of published aortic PECR and ACh % data of female mice exposed to filtered air, propylene glycol:vegetable glycerin (PG:VG), formaldehyde (FA), or acetaldehyde (AA) for 4d showed that the PECR in air-exposed mice (PECR = 1.43 ± 0.05, n = 16) correlated positively with the ACh % (r2 = 0.40) as seen in naïve aortas. Similarly, PECR values were significantly decreased in aortas with ED yet retained positive regression coefficients with ACh % (PG:VG r2 = 0.54; FA r2 = 0.55). Unlike other toxicants, inhaled AA significantly increased both PECR and ACh % values yet diminished their correlation (r2 = 0.09). Validation 3: To assess species-specific dependence, we tested PECR in rat aorta, and found PECR correlated with ACh % relaxation albeit less well in this aged and dyslipidemic model. Because the PECR reflects NOS function directly, it is a robust measure of both ED and vascular dysfunction. Therefore, it is a complementary index of existing tests of ED that also provides insight into mechanisms of vascular toxicity.
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Affiliation(s)
- Lexiao Jin
- American Heart Association‐Tobacco Regulation and Addiction CenterUniversity of LouisvilleLouisvilleKentuckyUSA
- Christina Lee Brown Envirome InstituteUniversity of LouisvilleLouisvilleKentuckyUSA
| | - Daniel J. Conklin
- American Heart Association‐Tobacco Regulation and Addiction CenterUniversity of LouisvilleLouisvilleKentuckyUSA
- Christina Lee Brown Envirome InstituteUniversity of LouisvilleLouisvilleKentuckyUSA
- Superfund Research CenterUniversity of LouisvilleLouisvilleKentuckyUSA
- Diabetes and Obesity CenterUniversity of LouisvilleLouisvilleKentuckyUSA
- Division of Environmental MedicineDepartment of MedicineUniversity of LouisvilleLouisvilleKentuckyUSA
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Memon SM, Kumar N, Rahman AAU, Syed BM. Evaluation of C-reactive protein and hematological parameters in smokeless tobacco users: A comparative cross-sectional study. Pak J Med Sci 2021; 37:983-987. [PMID: 34290770 PMCID: PMC8281176 DOI: 10.12669/pjms.37.4.3841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 12/04/2020] [Accepted: 02/25/2021] [Indexed: 11/23/2022] Open
Abstract
Objective: To investigate the changes in levels of C-reactive protein (CRP) and hematological parameters among smokeless tobacco (SLT) users. Methods: A comparative cross-sectional study was conducted at the community level in the coastal districts of Sindh province namely Badin, Thatta, and Sujawal from January 2017 to December 2019. The CRP and hematological parameters were evaluated by well-established methods among SLT and non-SLT users. Results: There was a statistically significant difference between SLT users (mean CRP = 0.77) versus non-users (mean CRP = 0.18), p = <0.001. Among hematological parameters, white blood cells (SLT users median = 7.85 versus non-SLT users median = 8.50, p = 0.004), monocytes (SLT users median = 6.00 versus non-SLT users median = 6.00, p = 0.001) and erythrocyte sedimentation rate (SLT users median = 15.00 versus non-SLT users median = 10.00, p = 0.006) showed statistically significant difference. Conclusions: Significantly elevated CRP was observed in SLT users similarly hematological parameters also showed changes. WBCs, monocytes and ESR were significantly deranged among SLT users. Further studies looking into long term effects of these changes would be helpful.
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Affiliation(s)
- Sikander Munir Memon
- Sikander Munir Memon, BDS. Medical Research Centre, Liaquat University of Medical and Health Sciences, Jamshoro 76090, Pakistan
| | - Naresh Kumar
- Naresh Kumar, BDS, PhD. Dr. Ishrat Ul Ebad Khan Institute of Oral Health Sciences, Dow University of Health Sciences, Karachi, Pakistan. Medical Research Centre, Liaquat University of Medical and Health Sciences, Jamshoro 76090, Pakistan
| | - Aneela Atta Ur Rahman
- Aneela Atta Ur Rahman, MBBS, MPH, PhD. Shaheed Mohtarama Benazir Bhutto Medical University, Larkana 77150, Pakistan. Medical Research Centre, Liaquat University of Medical and Health Sciences, Jamshoro 76090, Pakistan
| | - Binafsha Manzoor Syed
- Binafsha Manzoor Syed, MBBS, PhD. Medical Research Centre, Liaquat University of Medical and Health Sciences, Jamshoro 76090, Pakistan
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BEYOĞLU A, KARAKÜÇÜK Y, ÇÖMEZ A, MEŞEN A. Evaluation of the Acute and Chronic Effect of Smokeless Tobacco on Anterior Segment Parameters. KAHRAMANMARAŞ SÜTÇÜ İMAM ÜNIVERSITESI TIP FAKÜLTESI DERGISI 2021. [DOI: 10.17517/ksutfd.895430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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11
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Chakraborty P, Ghatak S, Chenkual S, Pachuau L, Zohmingthanga J, Bawihtlung Z, Khenglawt L, Pautu JL, Maitra A, Chhakchhuak L, Kumar NS. Panel of significant risk factors predicts early stage gastric cancer and indication of poor prognostic association with pathogens and microsatellite stability. Genes Environ 2021; 43:3. [PMID: 33568233 PMCID: PMC7877109 DOI: 10.1186/s41021-021-00174-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 02/01/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND There are very few studies covering the epidemiological risk factors associated with Epstein Barr Virus (EBV) and Microsatellite stability for Gastric Cancer (GC) cases. Early diagnosis of GC through epidemiological risk factors is very necessary for the clinical assessment of GC. The aim of this study was to find out the major risk factors to predict GC in early stage and the impact of pathogen infection and MSI on survival rate of patients. GC samples were screened for Helicobacter pylori, Epstein Barr Virus, and Mismatch repair (MMR) gene status (microsatellite stable or instable). Chi-square and logistic regression analysis of Odd ratio and 95% confidence interval (OR, 95% CI) were performed to find out the association between epidemiological factors and the risk of gastric cancer. The pathogen and MMR gene status were analysed to predict their effect on overall survival and the risk score and hazard ratio was calculated for prognostic assessment. RESULTS Excess body weight, consumption of extra salt, smoked food, alcohol, and smoking were the major risk factors for GC development. This study achieved a high area under the curve (AUC 0.94) for the probable GC patients in early-stage using the five-panel epidemiological risk factors. H. pylori infected cases were significant with smoked food, while EBV was found to be associated with tuibur intake and smoked food. In overall survival analysis EBV infected and microsatellite stable (HR: 1.32 and 1.34 respectively) GC cases were showing poor prognosis. CONCLUSION This study might provide new opportunities for personalized treatment options using this epidemiological factor risk score and clinicopathological factors assessment for early detection and prognosis in high-risk GC populations.
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Affiliation(s)
- Payel Chakraborty
- Department of Biotechnology, Mizoram University, Aizawl, Mizoram, 796004, India
| | - Souvik Ghatak
- Department of Biotechnology, Mizoram University, Aizawl, Mizoram, 796004, India
| | - Saia Chenkual
- Department of Surgery, Civil Hospital Aizawl, Aizawl, Mizoram, 796001, India
| | - Lalawmpuii Pachuau
- Department of Pathology, Civil Hospital Aizawl, Aizawl, Mizoram, 796001, India
| | - John Zohmingthanga
- Department of Pathology, Civil Hospital Aizawl, Aizawl, Mizoram, 796001, India
| | - Zothankima Bawihtlung
- Department of Radiation Oncology, Mizoram State Cancer Institute, Zemabawk, Aizawl, Mizoram, 796017, India
| | - Lalfakzuala Khenglawt
- Department of Radiation Oncology, Mizoram State Cancer Institute, Zemabawk, Aizawl, Mizoram, 796017, India
| | - Jeremy L Pautu
- Department of Oncology, Mizoram State Cancer Institute, Zemabawk, Aizawl, Mizoram, 796017, India
| | - Arindam Maitra
- National Institute of Biomedical Genomics, P.O. NSS, District Nadia, Kalyani, West Bengal, 741251, India
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Cho S, Rehni AK, Dave KR. Tobacco Use: A Major Risk Factor of Intracerebral Hemorrhage. J Stroke 2021; 23:37-50. [PMID: 33600701 PMCID: PMC7900392 DOI: 10.5853/jos.2020.04770] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Accepted: 01/20/2021] [Indexed: 12/23/2022] Open
Abstract
Spontaneous intracerebral hemorrhage (sICH) is one of the deadliest subtypes of stroke, and no treatment is currently available. One of the major risk factors is tobacco use. In this article, we review literature on how tobacco use affects the risk of sICH and also summarize the known effects of tobacco use on outcomes following sICH. Several studies demonstrate that the risk of sICH is higher in current cigarette smokers compared to non-smokers. The literature also establishes that cigarette smoking not only increases the risk of sICH but also increases hematoma growth, results in worse outcomes, and increases the risk of death from sICH. This review also discusses potential mechanisms activated by tobacco use which result in an increase in risk and severity of sICH. Exploring the underlying mechanisms may help alleviate the risk of sICH in tobacco users as well as may help better manage tobacco user sICH patients.
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Affiliation(s)
- Sunjoo Cho
- Peritz Scheinberg Cerebral Vascular Disease Research Laboratories, University of Miami Miller School of Medicine, Miami, FL, USA.,Department of Neurology, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Ashish K Rehni
- Peritz Scheinberg Cerebral Vascular Disease Research Laboratories, University of Miami Miller School of Medicine, Miami, FL, USA.,Department of Neurology, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Kunjan R Dave
- Peritz Scheinberg Cerebral Vascular Disease Research Laboratories, University of Miami Miller School of Medicine, Miami, FL, USA.,Department of Neurology, University of Miami Miller School of Medicine, Miami, FL, USA.,Department of Neuroscience Program, University of Miami Miller School of Medicine, Miami, FL, USA
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Evaluation of systemic inflammatory and thrombotic markers of cardiovascular risk among young Indian oral tobacco users. Indian Heart J 2020; 72:389-393. [PMID: 33189199 PMCID: PMC7670266 DOI: 10.1016/j.ihj.2020.08.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 07/11/2020] [Accepted: 08/03/2020] [Indexed: 12/23/2022] Open
Abstract
Background While the pro-inflammatory and pro-coagulant effects of cigarette smoking have been well described, the effect of smokeless tobacco (ST) on inflammatory and coagulation markers is still not clear. The study aimed to evaluate impact of smokeless tobacco use on systemic markers of inflammation [(TLC), neutrophil-lymphocyte ratio (NLR) (ESR), interleukin (IL) IL-1β, IL-6 and tumor necrosis factor alpha (TNFα)] and hypercoagulable state [fibrinogen and d-dimer] leading to increased cardiovascular risk in ST users as compared to non-users. Methods 150 healthy young adults using oral tobacco products for at least 1 year were included in the case group and 50 age-matched non-consumers as controls. Subjects with any known chronic illness or comorbidity were excluded from the study. Blood samples were tested for TLC, NLR, ESR, IL-1β, IL-6, TNFα, fibrinogen and d-dimer. Statistical analysis was done using SPSS 17.0 software. Results The baseline clinical and cardio-metabolic characteristics were comparable between the two groups. ST users had significantly elevated serum IL-6 [59.29 ± 124.69 pg/mL (n = 149) vs 8.21 ± 27.27 pg/mL (n = 47), p-value = 0.005], TNFα [77.18 ± 236.10 pg/mL (n = 149) vs 8.32 ± 9.36 pg/mL (n = 47), p-value = 0.041], fibrinogen [310.53 ± 129.05 mg/dL (n = 143) vs 282.82 ± 65.23 mg/dL (n = 42), p-value = 0.045] and d-dimer [0.28 ± 0.42 mg/L (n = 144) vs 0.17 ± 0.09 mg/L (n = 45), p-value = 0.043] levels as compared to non-users. Serum TLC, NLR, ESR and IL-1β remained unchanged in ST users and were similar to that of controls. Conclusions Chronic use of ST is associated with systemic inflammation and coagulation, which may increase the risk of athero-thrombotic cardiovascular events among ST users.
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Differences in biomarkers of inflammation and immune responses in chronic smokers and moist snuff users. Cytokine 2020; 137:155299. [PMID: 33011400 DOI: 10.1016/j.cyto.2020.155299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 09/11/2020] [Accepted: 09/12/2020] [Indexed: 11/21/2022]
Abstract
BACKGROUND Cigarette smoking is a major risk factor for cancer and other diseases. While smoking induces chronic inflammation and aberrant immune responses, the effects of smokeless tobacco products (STPs) on immune responses is less clear. Here we evaluated markers related to immune regulation in smokers (SMK), moist snuff consumers (MSC) and non-tobacco consumers (NTC) to better understand the effects of chronic tobacco use. MATERIALS AND METHODS Several markers associated with immune regulation were measured in peripheral blood mononuclear cells (PBMCs) from SMK (n = 40), MSC (n = 40), and NTC (n = 40) by flow cytometry. RESULTS Relative to NTC, seven markers were significantly suppressed in SMK, whereas in MSC, only one marker was significantly suppressed. In a logistic regression model, markers including granzyme B+ lymphocytes, perforin+ lymphocytes, granzyme B+ CD8+T cells, and KLRB1+ CD8+ T cells remained as statistically significant predictors for classifying the three cohorts. Further, cell-surface receptor signaling pathways and cell-cell signaling processes were downregulated in SMK relative to MSC; chemotaxis and LPS-mediated signaling pathways, were upregulated in SMK compared to MSC. A network of the tested markers was constructed to visualize the immunosuppression in SMK relative to MSC. CONCLUSION Moist snuff consumption is associated with significantly fewer perturbations in inflammation and immune function biomarkers relative to smoking. IMPACT This work identifies several key immunological biomarkers that differentiate the effects of chronic smoking from the use of moist snuff. Additionally, a molecular basis for aberrant immune responses that could render smokers more susceptible for infections and cancer is provided.
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15
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Evaluation of the effect of smokeless tobacco (Maras powder) on choroidal and retinal blood flow: an optical coherence tomography angiography study. Int Ophthalmol 2020; 40:1367-1376. [PMID: 32383132 DOI: 10.1007/s10792-020-01302-x] [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: 06/13/2019] [Accepted: 02/07/2020] [Indexed: 10/24/2022]
Abstract
ABSRTACT PURPOSE: To investigate the acute and chronic effects of the use of smokeless tobacco (Maras powder) on macular and choroidal blood flow, via optical coherence tomography angiography (OCTA). METHODS The study included 30 eyes of 30 patients using smokeless tobacco (ST) as the study group and 30 eyes of 30 healthy individuals as the control group. All subjects underwent a full ophthalmological examination, and baseline OCTA measurements were taken. Flow area in superficial capillary plexus (SCP), in deep capillary plexus (DCP), in choriocapillaris (mm2) and mean vascular density (VD) and foveal avascular zone in SCP and in DCP were assessed. Subfoveal choroidal thickness (SFCT) and central macular thickness were measured as well. RESULTS The SFCT measurements were determined to be significantly low in the study group (p < 0.001). In the comparison of the study group measurements at 5 m, 30 m and 1 h after using ST compared to the baseline measurements, SCP and DCP flow area, VD, CC flow area and SFCT were determined to have significantly decreased, statistically (p < 0.001). CONCLUSION OCTA could be important in showing that choroidal microvascular structures have been affected before occurence of the apparent clinical signs associated with acute and chronic ST use.
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Tripathi P, Alshahrani S, Alhazmi HA, Tripathi R, Siddiqui AH, Ahsan W, Al Bratty M. In vivo assessment of genotoxic potential of brown shammah (smokeless tobacco) in bone marrow cells of mice. Saudi Pharm J 2020; 28:480-486. [PMID: 32273808 PMCID: PMC7132595 DOI: 10.1016/j.jsps.2020.02.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Accepted: 02/26/2020] [Indexed: 12/31/2022] Open
Abstract
This study was aimed to assess the genotoxicity of brown shammah (BS), a local form of smokeless tobacco, popular in Middle East countries including Yemen, Saudi Arabia and Sudan. The genotoxicity was explored using in vivo chromosomal aberration (CA), micronucleus (MN) and sperm abnormality (SA) assays. In addition, oxidative stress was also determined using various hepatic markers. Swiss albino mice were selected for the study, which were divided in to 5 groups of six animals each. They include, negative control (NC, received only vehicle) as well as positive control group (PC, received vehicle for 2 weeks followed by administration of cyclophosphamide, CP). Depending upon their dose, three BS treated animal groups were BS-100, 300 and 900 mg/kg. Doses of BS were obtained by suspending BS in 0.5% CMC (carboxy methyl cellulose) and orally administered once a day for 2 weeks. Significant augmentation of the average percentage of aberrant metaphase (AM), CA per cells and suppressed mitotic activity was observed on post administration of BS. In addition, BS increased the occurrence of MNPCEs (micronucleated polychromatic erythrocytes) formation, induced cytotoxicity and increased percentage of abnormal sperms as compared to NC. Moreover, BS also induced oxidative stress as the activities of hepatic superoxide dismutase (SOD) and glutathione (GSH) were reduced and malondialdehyde (MDA) content were increased by BS. Cyclophosphamide was utilized as clastogen, showed anticipated positive results and confirmed the sensitivity of test system. Therefore, it may be deduced from the study that the BS possesses genotoxic effects on mice bone marrow and germ cells in vivo.
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Affiliation(s)
- Pankaj Tripathi
- Department of Pharmacology, College of Pharmacy, Jazan University, P. Box No. 114, Jazan, Saudi Arabia
| | - Saeed Alshahrani
- Department of Pharmacology, College of Pharmacy, Jazan University, P. Box No. 114, Jazan, Saudi Arabia
| | - Hassan A. Alhazmi
- Department of Pharmaceutical Chemistry, College of Pharmacy, Jazan University, P. Box No. 114, Jazan, Saudi Arabia
- Substance Abuse and Toxicology Research Centre, Jazan University, Jazan, P. Box No. 114, Jazan, Saudi Arabia
| | - Rina Tripathi
- Department of Clinical Pharmacy, College of Pharmacy, Jazan University, P. Box No. 114, Jazan, Saudi Arabia
| | - Abdul Hakeem Siddiqui
- Department of Pharmacology, College of Pharmacy, Jazan University, P. Box No. 114, Jazan, Saudi Arabia
| | - Waquar Ahsan
- Department of Pharmaceutical Chemistry, College of Pharmacy, Jazan University, P. Box No. 114, Jazan, Saudi Arabia
| | - Mohammed Al Bratty
- Department of Pharmaceutical Chemistry, College of Pharmacy, Jazan University, P. Box No. 114, Jazan, Saudi Arabia
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Systemic toxicity evaluation of novel tobacco products in Caenorhabditis elegans. Toxicol In Vitro 2020; 62:104671. [DOI: 10.1016/j.tiv.2019.104671] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 07/22/2019] [Accepted: 09/30/2019] [Indexed: 12/15/2022]
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Babic M, Schuchardt M, Tölle M, van der Giet M. In times of tobacco-free nicotine consumption: The influence of nicotine on vascular calcification. Eur J Clin Invest 2019; 49:e13077. [PMID: 30721530 DOI: 10.1111/eci.13077] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Revised: 01/11/2019] [Accepted: 02/01/2019] [Indexed: 12/12/2022]
Abstract
BACKGROUND Smoking remains the most important avoidable cause of global mortality. Even though the number of cigarette smokers declines in first world countries, the uses of alternative nicotine delivery products increase and may even surpass the sells of cigarettes. In this light, the explicit role of nicotine in the development of cardiovascular diseases should be elucidated. OBJECTIVES This narrative review attempts to connect current literature about possible effects of nicotine on the environment of the vasculature to the pathogenesis of vascular calcification, focusing on the tunica media of the vessel wall. METHODS For this review, papers found on Pubmed and Medline until December 2018 by searching for the keywords nicotine, vascular calcification, oxidative stress, osteoblastic transdifferentiation and matrix degradation were considered. RESULTS Nicotine creates an environment that probably facilitates and maybe even induces osteogenic transdifferentiation of VSMC by inflammation, endothelial dysfunction and reactive oxygen species. This process is believed to be a key event in calcification of the tunica media of the vessel wall. Furthermore, nicotine could lead to the formation of nucleation sites for hydroxyapatite by facilitating matrix vesicles and extracellular matrix degradation. CONCLUSIONS There is a growing body of evidence implicating that nicotine alone could impair vascular function and lead to vascular calcification. Further research is necessary to elucidate the explicit influence of nicotine on arteriosclerosis.
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Affiliation(s)
- Milen Babic
- Department of Nephrology, Charité - Universitaetsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Mirjam Schuchardt
- Department of Nephrology, Charité - Universitaetsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Markus Tölle
- Department of Nephrology, Charité - Universitaetsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Markus van der Giet
- Department of Nephrology, Charité - Universitaetsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
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Conklin DJ, Schick S, Blaha MJ, Carll A, DeFilippis A, Ganz P, Hall ME, Hamburg N, O'Toole T, Reynolds L, Srivastava S, Bhatnagar A. Cardiovascular injury induced by tobacco products: assessment of risk factors and biomarkers of harm. A Tobacco Centers of Regulatory Science compilation. Am J Physiol Heart Circ Physiol 2019; 316:H801-H827. [PMID: 30707616 PMCID: PMC6483019 DOI: 10.1152/ajpheart.00591.2018] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 01/09/2019] [Accepted: 01/27/2019] [Indexed: 02/07/2023]
Abstract
Although substantial evidence shows that smoking is positively and robustly associated with cardiovascular disease (CVD), the CVD risk associated with the use of new and emerging tobacco products, such as electronic cigarettes, hookah, and heat-not-burn products, remains unclear. This uncertainty stems from lack of knowledge on how the use of these products affects cardiovascular health. Cardiovascular injury associated with the use of new tobacco products could be evaluated by measuring changes in biomarkers of cardiovascular harm that are sensitive to the use of combustible cigarettes. Such cardiovascular injury could be indexed at several levels. Preclinical changes contributing to the pathogenesis of disease could be monitored by measuring changes in systemic inflammation and oxidative stress, organ-specific dysfunctions could be gauged by measuring endothelial function (flow-mediated dilation), platelet aggregation, and arterial stiffness, and organ-specific injury could be evaluated by measuring endothelial microparticles and platelet-leukocyte aggregates. Classical risk factors, such as blood pressure, circulating lipoproteins, and insulin resistance, provide robust estimates of risk, and subclinical disease progression could be followed by measuring coronary artery Ca2+ and carotid intima-media thickness. Given that several of these biomarkers are well-established predictors of major cardiovascular events, the association of these biomarkers with the use of new and emerging tobacco products could be indicative of both individual and population-level CVD risk associated with the use of these products. Differential effects of tobacco products (conventional vs. new and emerging products) on different indexes of cardiovascular injury could also provide insights into mechanisms by which they induce cardiovascular harm.
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Affiliation(s)
- Daniel J Conklin
- Diabetes and Obesity Center, University of Louisville , Louisville, Kentucky
| | - Suzaynn Schick
- Department of Medicine, University of California-San Francisco , San Francisco, California
| | - Michael J Blaha
- Ciccarone Center for the Prevention of Heart Disease, Department of Medicine, Johns Hopkins University , Baltimore, Maryland
| | - Alex Carll
- Diabetes and Obesity Center, University of Louisville , Louisville, Kentucky
| | - Andrew DeFilippis
- Diabetes and Obesity Center, University of Louisville , Louisville, Kentucky
| | - Peter Ganz
- Department of Medicine, University of California-San Francisco , San Francisco, California
| | - Michael E Hall
- Department of Physiology and Biophysics, University of Mississippi Medical Center , Jackson, Mississippi
| | - Naomi Hamburg
- Department of Medicine/Cardiovascular Medicine, School of Medicine, Boston University , Boston, Massachusetts
| | - Tim O'Toole
- Diabetes and Obesity Center, University of Louisville , Louisville, Kentucky
| | - Lindsay Reynolds
- Department of Epidemiology and Prevention, Wake Forest School of Medicine , Winston-Salem, North Carolina
| | - Sanjay Srivastava
- Diabetes and Obesity Center, University of Louisville , Louisville, Kentucky
| | - Aruni Bhatnagar
- Diabetes and Obesity Center, University of Louisville , Louisville, Kentucky
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Xie Z, Lorkiewicz P, Riggs DW, Bhatnagar A, Srivastava S. Comprehensive, robust, and sensitive UPLC-MS/MS analysis of free biogenic monoamines and their metabolites in urine. J Chromatogr B Analyt Technol Biomed Life Sci 2018; 1099:83-91. [PMID: 30248561 PMCID: PMC6398444 DOI: 10.1016/j.jchromb.2018.09.012] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2018] [Revised: 09/05/2018] [Accepted: 09/11/2018] [Indexed: 01/03/2023]
Abstract
Biogenic monoamines, including catecholamines and serotonin are important hormones and neurotransmitters. Abnormal urinary levels of biogenic monoamines and their metabolites are associated with smoking, neuroendocrine tumors, as well as neurological and cardiovascular diseases. Measurements of free biogenic monoamines and their metabolites have been challenging because of low concentrations in complex biological matrices. Current methods require extensive enrichment and removal of interfering substances and can analyze only basic or acidic compounds in a single run. We developed a simple and robust dilute-and-shoot method capable of measuring 10 analytes, including free biogenic monoamines and their metabolites in human urine. The assay enables sensitive measurements of analytes within expected sample concentration ranges. To assess the assay's efficacy, we measured urinary levels of free biogenic monoamines and their metabolites in 255 non-smokers and 191 smokers. Our data show that while smokers had significantly higher urinary levels of free catecholamines and metanephrines, there was a decrease in levels of biogenic amine metabolites synthesized through the monoamine oxidase pathway - homovanillic acid and vanillylmandelic acid. The method could be used for high throughput measurement of the range of free biogenic amines and their metabolites in urine under a variety of different conditions.
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Affiliation(s)
- Zhengzhi Xie
- American Heart Association - Tobacco Regulation and Addiction Center, Superfund Research Center and Diabetes and Obesity Center, Institute of Molecular Cardiology, University of Louisville, 580 South Preston Street, Louisville, KY, 40202, United States of America
| | - Pawel Lorkiewicz
- American Heart Association - Tobacco Regulation and Addiction Center, Superfund Research Center and Diabetes and Obesity Center, Institute of Molecular Cardiology, University of Louisville, 580 South Preston Street, Louisville, KY, 40202, United States of America; Department of Chemistry, University of Louisville, 2320 S. Brook St., Louisville, KY, 40292, United States of America
| | - Daniel W Riggs
- American Heart Association - Tobacco Regulation and Addiction Center, Superfund Research Center and Diabetes and Obesity Center, Institute of Molecular Cardiology, University of Louisville, 580 South Preston Street, Louisville, KY, 40202, United States of America
| | - Aruni Bhatnagar
- American Heart Association - Tobacco Regulation and Addiction Center, Superfund Research Center and Diabetes and Obesity Center, Institute of Molecular Cardiology, University of Louisville, 580 South Preston Street, Louisville, KY, 40202, United States of America
| | - Sanjay Srivastava
- American Heart Association - Tobacco Regulation and Addiction Center, Superfund Research Center and Diabetes and Obesity Center, Institute of Molecular Cardiology, University of Louisville, 580 South Preston Street, Louisville, KY, 40202, United States of America.
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Conklin DJ, Ogunwale MA, Chen Y, Theis WS, Nantz MH, Fu XA, Chen LC, Riggs DW, Lorkiewicz P, Bhatnagar A, Srivastava S. Electronic cigarette-generated aldehydes: The contribution of e-liquid components to their formation and the use of urinary aldehyde metabolites as biomarkers of exposure. AEROSOL SCIENCE AND TECHNOLOGY : THE JOURNAL OF THE AMERICAN ASSOCIATION FOR AEROSOL RESEARCH 2018; 52:1219-1232. [PMID: 31456604 PMCID: PMC6711607 DOI: 10.1080/02786826.2018.1500013] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Revised: 05/14/2018] [Accepted: 06/14/2018] [Indexed: 05/18/2023]
Abstract
Electronic cigarettes (e-cigarette) have emerged as a popular electronic nicotine delivery system (ENDS) in the last decade. Despite the absence of combustion products and toxins such as carbon monoxide (CO) and tobacco-specific nitrosamines (TSNA), carbonyls including short-chain, toxic aldehydes have been detected in e-cigarette-derived aerosols up to levels found in tobacco smoke. Given the health concerns regarding exposures to toxic aldehydes, understanding both aldehyde generation in e-cigarette and e-cigarette exposure is critical. Thus, we measured aldehydes generated in aerosols derived from propylene glycol (PG):vegetable glycerin (VG) mixtures and from commercial e-liquids with flavorants using a state-of-the-art carbonyl trap and mass spectrometry. To track e-cigarette exposure in mice, we measured urinary metabolites of 4 aldehydes using ULPC-MS/MS or GC-MS. Aldehyde levels, regardless of abundance (saturated: formaldehyde, acetaldehyde >> unsaturated: acrolein, crotonaldehyde), were dependent on the PG:VG ratio and the presence of flavorants. The metabolites of 3 aldehydes - formate, acetate and 3-hydroxypropyl mercapturic acid (3-HPMA; acrolein metabolite) -- were increased in urine after e-cigarette aerosol and mainstream cigarette smoke (MCS) exposures, but the crotonaldehyde metabolite (3-hydroxy-1-methylpropylmercapturic acid, HPMMA) was increased only after MCS exposure. Interestingly, exposure to menthol-flavored e-cigarette aerosol increased the levels of urinary 3-HPMA and sum of nicotine exposure (nicotine, cotinine, trans-3'-hydroxycotinine) relative to exposure to a Classic Tobacco-flavored e-cigarette aerosol. Comparing these findings with aerosols of other ENDS and by measuring aldehyde-derived metabolites in human urine following exposure to e-cigarette aerosols will further our understanding of the relationship between ENDS use, aldehyde exposure and health risk.
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Affiliation(s)
- Daniel J. Conklin
- American Heart Association – Tobacco Regulation and Addiction Center, University of Louisville, Louisville, KY 40292
- Diabetes and Obesity Center, University of Louisville, Louisville, KY 40292
| | - Mumiye A. Ogunwale
- Department of Chemistry, University of Louisville, Louisville, KY 40292
- Department of Chemical Engineering, University of Louisville, Louisville, KY 40292
| | - Yizheng Chen
- Department of Chemical Engineering, University of Louisville, Louisville, KY 40292
| | - Whitney S. Theis
- American Heart Association – Tobacco Regulation and Addiction Center, University of Louisville, Louisville, KY 40292
- Diabetes and Obesity Center, University of Louisville, Louisville, KY 40292
| | - Michael H. Nantz
- American Heart Association – Tobacco Regulation and Addiction Center, University of Louisville, Louisville, KY 40292
- Department of Chemistry, University of Louisville, Louisville, KY 40292
| | - Xiao-An Fu
- American Heart Association – Tobacco Regulation and Addiction Center, University of Louisville, Louisville, KY 40292
- Department of Chemical Engineering, University of Louisville, Louisville, KY 40292
| | - Lung-Chi Chen
- American Heart Association – Tobacco Regulation and Addiction Center, University of Louisville, Louisville, KY 40292
- Department of Environmental Medicine, New York University, Tuxedo, New York 10987
| | - Daniel W. Riggs
- American Heart Association – Tobacco Regulation and Addiction Center, University of Louisville, Louisville, KY 40292
- Diabetes and Obesity Center, University of Louisville, Louisville, KY 40292
| | - Pawel Lorkiewicz
- American Heart Association – Tobacco Regulation and Addiction Center, University of Louisville, Louisville, KY 40292
- Diabetes and Obesity Center, University of Louisville, Louisville, KY 40292
| | - Aruni Bhatnagar
- American Heart Association – Tobacco Regulation and Addiction Center, University of Louisville, Louisville, KY 40292
- Diabetes and Obesity Center, University of Louisville, Louisville, KY 40292
| | - Sanjay Srivastava
- American Heart Association – Tobacco Regulation and Addiction Center, University of Louisville, Louisville, KY 40292
- Diabetes and Obesity Center, University of Louisville, Louisville, KY 40292
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