1
|
Liu G, Lin CJ, Yates CR, Prasad GL. Metabolomic Analysis Identified Reduced Levels of Xenobiotics, Oxidative Stress, and Improved Vitamin Metabolism in Smokers Switched to Vuse Electronic Nicotine Delivery System. Nicotine Tob Res 2021; 23:1133-1142. [PMID: 33165576 PMCID: PMC8274285 DOI: 10.1093/ntr/ntaa225] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 11/02/2020] [Indexed: 12/01/2022]
Abstract
Introduction Switching to noncombustible tobacco products presents an opportunity for
cigarette smokers to potentially reduce the health risks associated with
smoking. Electronic Nicotine Delivery Systems (ENDS) are one such product
because the vapor produced from ENDS contains far fewer toxicants than
cigarette smoke. To investigate the biochemical effects of switching from
smoking to an ENDS, we assessed global metabolomic profiles of smokers in a
7-day confinement clinical study. Methods In the first 2 days of this clinical study, the subjects used their usual
brand of cigarettes and then switched to exclusive ENDS ad libitum use for 5
days. Urine and plasma samples were collected at baseline and 5 days after
switching. The samples were analyzed using a mass spectrometry-based
metabolomic platform. Results Random forest analyses of urine and plasma metabolomic data revealed
excellent predictive accuracy (>97%) of a 30-metabolite signature that
can differentiate smokers from 5-day ENDS switchers. In these signatures,
most biomarkers are nicotine-derived metabolites or xenobiotics. They were
significantly reduced in urine and plasma, suggesting a decreased xenobiotic
load on subjects. Our results also show significantly decreased levels of
plasma glutathione metabolites after switching, which suggests reduced
levels of oxidative stress. In addition, increased urinary and plasma levels
of vitamins and antioxidants were identified, suggesting enhanced
bioavailability due to discontinuation of cigarette smoking and switching to
Vuse ENDS use. Conclusions Our results suggest reduced toxicant exposure, reduced oxidative stress, and
potential beneficial changes in vitamin metabolism within 5 days in smokers
switching to Vuse ENDS. Implications Switching from smoking to exclusive ENDS use in clinical confinement settings
results in significant reduction of nicotine metabolites and other
cigarette-related xenobiotics in urine and plasma of subjects. Significantly
decreased oxidative stress-related metabolites and increased urinary and
plasma levels of vitamin metabolites and antioxidants in 5-day short-term
ENDS switchers suggest less toxic physiological environment for consumers of
ENDS products and potential health benefits if such changes persist.
Collapse
Affiliation(s)
- Gang Liu
- RAI Services Company, Winston-Salem, NC
| | | | | | | |
Collapse
|
2
|
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.
Collapse
|
3
|
Liu G, Lee DP, Schmidt E, Prasad GL. Pathway Analysis of Global Metabolomic Profiles Identified Enrichment of Caffeine, Energy, and Arginine Metabolism in Smokers but Not Moist Snuff Consumers. Bioinform Biol Insights 2019; 13:1177932219882961. [PMID: 31666793 PMCID: PMC6798164 DOI: 10.1177/1177932219882961] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Accepted: 09/18/2019] [Indexed: 12/22/2022] Open
Abstract
Existing US epidemiological data demonstrate that consumption of smokeless
tobacco, particularly moist snuff, is less harmful than cigarette smoking.
However, the molecular and biochemical changes due to moist snuff consumption
relative to smoking remain incompletely understood. We previously reported that
smokers (SMK) exhibit elevated oxidative stress and inflammation relative to
moist snuff consumers (MSC) and non-tobacco consumers (NTC), based on
metabolomic profiling data of saliva, plasma, and urine from MSC, SMK, and NTC.
In this study, we investigated the effects of tobacco consumption on additional
metabolic pathways using pathway-based analysis tools. To this end, metabolic
pathway enrichment analysis and topology analysis were performed through
pair-wise comparisons of global metabolomic profiles of SMK, MSC, and NTC. The
analyses identified >8 significantly perturbed metabolic pathways in SMK
compared with NTC and MSC in all 3 matrices. Among these differentially enriched
pathways, perturbations of caffeine metabolism, energy metabolism, and arginine
metabolism were mostly observed. In comparison, fewer enriched metabolic
pathways were identified in MSC compared with NTC (5 in plasma, none in urine
and saliva). This is consistent with our transcriptomics profiling results that
show no significant differences in peripheral blood mononuclear cell gene
expression between MSC and NTC. These findings, taken together with our previous
biochemical, metabolomic, and transcriptomic analysis results, provide a better
understanding of the relative changes in healthy tobacco consumers, and
demonstrate that chronic cigarette smoking, relative to the use of smokeless
tobacco, results in more pronounced biological changes, which could culminate in
smoking-related diseases.
Collapse
Affiliation(s)
- Gang Liu
- RAI Services Company, Winston-Salem, NC, USA
| | | | | | - G L Prasad
- RAI Services Company, Winston-Salem, NC, USA
| |
Collapse
|
4
|
Urinary Leukotriene E4and 2,3-Dinor Thromboxane B2Are Biomarkers of Potential Harm in Short-Term Tobacco Switching Studies. Cancer Epidemiol Biomarkers Prev 2019; 28:2095-2105. [DOI: 10.1158/1055-9965.epi-19-0342] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 08/22/2019] [Accepted: 09/19/2019] [Indexed: 11/16/2022] Open
|
5
|
Profiling of carboxyl-containing metabolites in smokers and non-smokers by stable isotope labeling combined with LC-MS/MS. Anal Biochem 2019; 569:1-9. [DOI: 10.1016/j.ab.2018.12.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 12/07/2018] [Accepted: 12/08/2018] [Indexed: 12/16/2022]
|
6
|
Qiu J, Zhang Y, Zhao L, He Q, Jiang J, Hong Q, He J. Isolation and characterization of the cotinine-degrading bacterium Nocardioides sp. Strain JQ2195. JOURNAL OF HAZARDOUS MATERIALS 2018; 353:158-165. [PMID: 29665494 DOI: 10.1016/j.jhazmat.2018.04.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 03/31/2018] [Accepted: 04/02/2018] [Indexed: 06/08/2023]
Abstract
Cotinine, the primary nicotine metabolite, not only more stable and more difficult to degrade in the environment but is a potential health risk to human. To date, little is known about the biodegradation process of cotinine. In this study, a bacterial strain JQ2195 was isolated from municipal wastewater and was identified as Nocardioides sp. based on morphological, physiological characteristics, and 16 S rRNA gene phylogenetic analysis. This strain utilized cotinine as a sole carbon source and degraded 0.5 g L-1 cotinine completely within 32 h. Optimum degradation of cotinine by JQ2195 was at 30 °C and pH 7.0. Two cotinine degradation intermediates were identified as 6-hydroxy-cotinine and 6-hydroxy-3-succinoylpyridine by UV/VIS spectroscopy and liquid chromatography coupled with time-of-flight mass spectrometry. In addition, about half of cotinine was transformed to 6-hydroxy-3-succinoylpyridine which was a value-added compound for biocatalysis. When 2,6-dichlorophenolindophenol was used as an electron acceptor, the cell-free extract containing the inducible cotinine dehydrogenase could convert cotinine into 6-hydroxy-cotinine with the activity 40 ± 6 mUnmg-1.
Collapse
Affiliation(s)
- Jiguo Qiu
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yanting Zhang
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Lingling Zhao
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Qin He
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Jiandong Jiang
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Qing Hong
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Jian He
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China.
| |
Collapse
|
7
|
Jessen WJ, Borgerding MF, Prasad GL. Global methylation profiles in buccal cells of long-term smokers and moist snuff consumers. Biomarkers 2018; 23:625-639. [DOI: 10.1080/1354750x.2018.1466367] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Walter J. Jessen
- Laboratory Corporation of America Holdings (LabCorp), Burlington, NC, USA
| | | | | |
Collapse
|
8
|
Sgambato JA, Jones BA, Caraway JW, Prasad G. Inflammatory profile analysis reveals differences in cytokine expression between smokers, moist snuff users, and dual users compared to non-tobacco consumers. Cytokine 2018; 107:43-51. [DOI: 10.1016/j.cyto.2017.11.013] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Revised: 11/16/2017] [Accepted: 11/18/2017] [Indexed: 12/21/2022]
|
9
|
Rajagopalan P, Patel K, Jain AP, Nanjappa V, Datta KK, Subbannayya T, Mangalaparthi KK, Kumari A, Manoharan M, Coral K, Murugan S, Nair B, Prasad TSK, Mathur PP, Gupta R, Gupta R, Khanna-Gupta A, Califano J, Sidransky D, Gowda H, Chatterjee A. Molecular alterations associated with chronic exposure to cigarette smoke and chewing tobacco in normal oral keratinocytes. Cancer Biol Ther 2018; 19:773-785. [PMID: 29723088 DOI: 10.1080/15384047.2018.1470724] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Tobacco usage is a known risk factor associated with development of oral cancer. It is mainly consumed in two different forms (smoking and chewing) that vary in their composition and methods of intake. Despite being the leading cause of oral cancer, molecular alterations induced by tobacco are poorly understood. We therefore sought to investigate the adverse effects of cigarette smoke/chewing tobacco exposure in oral keratinocytes (OKF6/TERT1). OKF6/TERT1 cells acquired oncogenic phenotype after treating with cigarette smoke/chewing tobacco for a period of 8 months. We employed whole exome sequencing (WES) and quantitative proteomics to investigate the molecular alterations in oral keratinocytes chronically exposed to smoke/ chewing tobacco. Exome sequencing revealed distinct mutational spectrum and copy number alterations in smoke/ chewing tobacco treated cells. We also observed differences in proteomic alterations. Proteins downstream of MAPK1 and EGFR were dysregulated in smoke and chewing tobacco exposed cells, respectively. This study can serve as a reference for fundamental damages on oral cells as a consequence of exposure to different forms of tobacco.
Collapse
Affiliation(s)
- Pavithra Rajagopalan
- a Institute of Bioinformatics, International Tech Park , Bangalor , India.,b School of Biotechnology , Kalinga Institute of Industrial Technology , Bhubaneswar , India
| | - Krishna Patel
- a Institute of Bioinformatics, International Tech Park , Bangalor , India.,c School of Biotechnology , Amrita Vishwa Vidyapeetham , Kollam , India
| | - Ankit P Jain
- a Institute of Bioinformatics, International Tech Park , Bangalor , India.,b School of Biotechnology , Kalinga Institute of Industrial Technology , Bhubaneswar , India
| | | | - Keshava K Datta
- a Institute of Bioinformatics, International Tech Park , Bangalor , India
| | | | - Kiran K Mangalaparthi
- a Institute of Bioinformatics, International Tech Park , Bangalor , India.,c School of Biotechnology , Amrita Vishwa Vidyapeetham , Kollam , India
| | | | | | | | | | - Bipin Nair
- c School of Biotechnology , Amrita Vishwa Vidyapeetham , Kollam , India
| | - T S Keshava Prasad
- a Institute of Bioinformatics, International Tech Park , Bangalor , India.,e NIMHANS-IOB Bioinformatics and Proteomics Laboratory , Neurobiology Research Centre, National Institute of Mental Health and Neurosciences , Bangalore , India.,f Center for Systems Biology and Molecular Medicine , Yenepoya , Mangalore , India
| | - Premendu P Mathur
- b School of Biotechnology , Kalinga Institute of Industrial Technology , Bhubaneswar , India.,g Dept. of Biochemistry & Molecular Biology , School of Life Sciences, Pondicherry University , Pondicherry , India
| | - Ravi Gupta
- d Medgenome Labs Pvt. Ltd. , Bangalore , India
| | - Rohit Gupta
- d Medgenome Labs Pvt. Ltd. , Bangalore , India
| | | | - Joseph Califano
- h Department of Surgery , UC San Diego, Moores Cancer Center , La Jolla , CA , USA
| | - David Sidransky
- i Department of Otolaryngology-Head and Neck Surgery , Johns Hopkins University School of Medicine , Baltimore , MD , USA
| | - Harsha Gowda
- a Institute of Bioinformatics, International Tech Park , Bangalor , India
| | - Aditi Chatterjee
- a Institute of Bioinformatics, International Tech Park , Bangalor , India
| |
Collapse
|
10
|
Arimilli S, Madahian B, Chen P, Marano K, Prasad GL. Gene expression profiles associated with cigarette smoking and moist snuff consumption. BMC Genomics 2017; 18:156. [PMID: 28193179 PMCID: PMC5307792 DOI: 10.1186/s12864-017-3565-1] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Accepted: 02/07/2017] [Indexed: 01/11/2023] Open
Abstract
Background Among the different tobacco products that are available on the US market, cigarette smoking is shown to be the most harmful and the effects of cigarette smoking have been well studied. US epidemiological studies indicate that non-combustible tobacco products are less harmful than smoking and yet very limited biological and mechanistic information is available on the effects of these alternative tobacco products. For the first time, we characterized gene expression profiling in PBMCs from moist snuff consumers (MSC), compared with that from consumers of cigarettes (SMK) and non-tobacco consumers (NTC). Results Microarray analysis identified 100 differentially expressed genes (DEGs) between the SMK and NTC groups and 46 DEGs between SMK and MSC groups. However, we found no significant differences in gene expression between MSC and NTC. Both hierarchical clustering and principle component analysis revealed that MSC and NTC expression profiles were more similar than to SMK. Random forest classification identified a subset of DEGs which predicted SMK from either NTC or MSC with high accuracy (AUC 0.98). Conclusions PMBC gene expression profiles of NTC and MSC are similar to each other, while SMK exhibit distinct profiles with alterations in immune related pathways. In addition to discovering several biomarkers, these studies support further understanding of the biological effects of different tobacco products. Trial registration ClinicalTrials.gov. Identifier: NCT01923402. Date of Registration: August 14, 2013. Study was retrospectively registered. Electronic supplementary material The online version of this article (doi:10.1186/s12864-017-3565-1) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Subhashini Arimilli
- Department of Microbiology and Immunology, Wake Forest University School of Medicine, Winston-Salem, NC, 27101, USA
| | | | - Peter Chen
- RAI Services Company, PO Box 1487, Winston-Salem, NC, 27102, USA
| | - Kristin Marano
- RAI Services Company, 401 North Main Street, Winston-Salem, NC, 27101, USA
| | - G L Prasad
- RAI Services Company, PO Box 1487, Winston-Salem, NC, 27102, USA.
| |
Collapse
|
11
|
Development, validation and application of a fast analytical methodology for the simultaneous determination of DNA- and RNA-derived urinary nucleosides by liquid chromatography coupled to tandem mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2016; 1019:132-9. [DOI: 10.1016/j.jchromb.2015.10.044] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Revised: 10/26/2015] [Accepted: 10/29/2015] [Indexed: 01/24/2023]
|
12
|
Prasad G, Jones BA, Chen P, Gregg EO. A cross-sectional study of biomarkers of exposure and effect in smokers and moist snuff consumers. ACTA ACUST UNITED AC 2016; 54:633-42. [DOI: 10.1515/cclm-2015-0594] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Accepted: 08/26/2015] [Indexed: 01/20/2023]
Abstract
AbstractCigarette smoking is a major risk factor for several chronic diseases. Epidemiological data indicate the use of smokeless tobacco (ST) is associated with significantly lower risk for smoking-related diseases compared to cigarettes. Several biomarkers of exposure (BioExp) and effect (BioEff) associated with smoking and use of moist snuff (ST) were evaluated.A single site, cross-sectional clinical study enrolled three groups of generally healthy male smokers (SMK), moist snuff consumers (MSC), and non-tobacco consumers (NTC), and several BioExp and BioEff were evaluated.Blood and urinary BioExp, including total nicotine equivalents and tobacco-specific nitrosamines, were higher in MSC compared to SMK. Biomarkers of combustion-related toxicants and cadmium were elevated in SMK. Elevated levels of some BioEff associated with oxidative stress (urinary isoprostanes and leukotriene E4), inflammation (white blood cell count), platelet activation (thromboxane metabolites), and lipid metabolism (apolipoprotein B100 and oxidized low-density lipoprotein) were observed in SMK relative to NTC and MSC (all p<0.05). The non-smoking groups (MSC and NTC) showed similar levels of combustion-related BioExp and BioEff.Higher levels of exposure to nicotine and some N′-nitrosamines may be observed in MSC, and SMK are exposed to higher levels of combustion-related toxicants. Changes in BioEff consistent with some aspects of inflammation, oxidative stress, and altered lipid metabolism were detected in SMK compared to the non-smoking groups. The biomarker data further improve our understanding of pathophysiological changes and the risk continuum associated with various tobacco products, and could be useful components of future assessments of tobacco products.
Collapse
|