1
|
Sarker MHR, Moriyama M, Sujon H, Rahman MM, Banu S, Chisti MJ, Ahmed T, Faruque ASG. Smokeless tobacco consumption and its association with risk factors of chronic kidney disease in rural and peri-urban Bangladesh. Tob Induc Dis 2023; 21:138. [PMID: 37869615 PMCID: PMC10588374 DOI: 10.18332/tid/171358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 08/07/2023] [Accepted: 08/17/2023] [Indexed: 10/24/2023] Open
Abstract
INTRODUCTION Compared to smoking, which has major consequences in chronic kidney disease (CKD) initiation and progression, smokeless tobacco (SLT) consumption is considered to have fewer health consequences. We investigated the prevalence of SLT consumption and its association with risk factors of CKD in a rural and peri-urban Bangladeshi population. METHODS Using random sampling we recruited 872 adults in 2020, from the Mirzapur Demographic Surveillance System of Bangladesh, who had resided in the area for at least five years. Interviews using a semi-structured questionnaire, physical examination and anthropometric measurements were done, followed by blood and urine testing. The blood and urine tests were repeated in selected participants after three months as per the CKD Epidemiology Collaboration equation. RESULTS The prevalence of SLT consumption was 29%. Being aged ≥46 years (OR=7.10; 95% CI: 4.79-10.94), female (OR=1.64; 95% CI: 1.21-2.22), housewife (OR=1.82; 95% CI: 1.35-2.45), farmer (OR=1.71; 95% CI: 1.06-2.76), widow (OR=3.40; 95% CI: 2.24-5.17), and having no formal schooling (OR=4.91; 95% CI: 3.59-6.72), family income of <$100/month (OR=1.66; 95% CI: 1.13-2.43), sleeping duration <7 hours per day (OR=2.33; 95% CI: 1.70-3.19), were associated with a significantly higher odds of SLT consumption. However, being aged 31-45 years (OR=0.25; 95% CI: 0.16-0.38) had significantly lower odds of being an SLT consumer. Among the diseases investigated, undernutrition (OR=1.63; 95% CI: 1.15-2.33), hypertension (OR=1.52; 95% CI: 1.13-2.05), anemia (OR=1.94; 95% CI: 1.39-2.71) and CKD (OR=1.62; 95% CI: 1.15-2.27) were significantly associated with SLT consumption. In the multivariable analysis, being aged 31-45 years (AOR=3.06; 95% CI: 1.91-4.90), ≥46 years (AOR=15.69; 95% CI: 4.64-53.09) and having no formal schooling (AOR=2.47; 95% CI: 1.72-3.55) were found to have a significant association with being an SLT consumer. CONCLUSIONS SLT consumption is associated with most of the established risk factors of CKD within the studied population.
Collapse
Affiliation(s)
- Mohammad H R Sarker
- Technical Training Unit, International Centre for Diarrheal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - Michiko Moriyama
- Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Hasnat Sujon
- Technical Training Unit, International Centre for Diarrheal Disease Research, Bangladesh, Dhaka, Bangladesh
- Directorate General of Health Services, Ministry of Health and Family Welfare, Dhaka, Bangladesh
| | - Md M Rahman
- Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Shakila Banu
- Technical Training Unit, International Centre for Diarrheal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - Mohammod J Chisti
- Nutrition and Clinical Services Division, International Centre for Diarrheal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - Tahmeed Ahmed
- Nutrition and Clinical Services Division, International Centre for Diarrheal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - Abu S G Faruque
- Nutrition and Clinical Services Division, International Centre for Diarrheal Disease Research, Bangladesh, Dhaka, Bangladesh
| |
Collapse
|
2
|
Transient Expression of Flavivirus Structural Proteins in Nicotiana benthamiana. Vaccines (Basel) 2022; 10:vaccines10101667. [PMID: 36298532 PMCID: PMC9610170 DOI: 10.3390/vaccines10101667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 09/27/2022] [Accepted: 10/04/2022] [Indexed: 11/05/2022] Open
Abstract
Flaviviruses are a threat to public health and can cause major disease outbreaks. Tick-borne encephalitis (TBE) is caused by a flavivirus, and it is one of the most important causes of viral encephalitis in Europe and is on the rise in Sweden. As there is no antiviral treatment available, vaccination remains the best protective measure against TBE. Currently available TBE vaccines are based on formalin-inactivated virus produced in cell culture. These vaccines must be delivered by intramuscular injection, have a burdensome immunization schedule, and may exhibit vaccine failure in certain populations. This project aimed to develop an edible TBE vaccine to trigger a stronger immune response through oral delivery of viral antigens to mucosal surfaces. We demonstrated successful expression and post-translational processing of flavivirus structural proteins which then self-assembled to form virus-like particles in Nicotiana benthamiana. We performed oral toxicity tests in mice using various plant species as potential bioreactors and evaluated the immunogenicity of the resulting edible vaccine candidate. Mice immunized with the edible vaccine candidate did not survive challenge with TBE virus. Interestingly, immunization of female mice with a commercial TBE vaccine can protect their offspring against TBE virus infection.
Collapse
|
3
|
The Antioxidant Properties of Alfalfa (Medicago sativa L.) and Its Biochemical, Antioxidant, Anti-Inflammatory, and Pathological Effects on Nicotine-Induced Oxidative Stress in the Rat Liver. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:2691577. [PMID: 35378828 PMCID: PMC8976666 DOI: 10.1155/2022/2691577] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 03/11/2022] [Indexed: 01/08/2023]
Abstract
Medicago sativa Linn or alfalfa is a tonic plant rich in proteins, vitamins, and minerals that is used to treat many diseases due to its pharmacological properties such as anti-inflammatory and antioxidant activities. So, the aim of this study was to evaluate the efficacy of alfalfa methanolic extract (AME) on the prevention of liver damage caused by nicotine. The total phenols, flavonoids levels, and the free radical scavenging activity of its extract (IC50) were measured. In this study, 30 Wistar rats were randomly divided into 5 groups as control (untreated), N (nicotine only), T1, T2, and T3 (nicotine + AME 100, 250, and 500 mg/kg/day, respectively). AME (orally) and nicotine (intraperitoneal injection, 0.5 mg/kg/day) were then administered for 21 days. Weight gain, the liver-to-body weight ratio, liver functional enzymes, and the lipid profile were measured. Moreover, we evaluated oxidative stress, proinflammatory parameters, and histopathological changes in the liver. Total phenols, flavonoids, and IC50 were determined as
mg GAE/g,
mg QE/g, and
μg/ml, respectively. Nicotine changed the measured parameters to abnormal. AME increased weight gain, the liver-to-body weight ratio, and enzymatic antioxidant levels and decreased malondialdehyde, liver functional enzymes, and proinflammatory cytokine levels. The lipid profile and histopathological changes have also been improved by AME in a dose-dependent manner. The results showed that AME in a dose-dependent manner by improving the inflammation and oxidative damage could improve the liver damage caused by nicotine.
Collapse
|
4
|
Smith LC, Kallupi M, Tieu L, Shankar K, Jaquish A, Barr J, Su Y, Velarde N, Sedighim S, Carrette LLG, Klodnicki M, Sun X, de Guglielmo G, George O. Validation of a nicotine vapor self-administration model in rats with relevance to electronic cigarette use. Neuropsychopharmacology 2020; 45:1909-1919. [PMID: 32544927 PMCID: PMC7608444 DOI: 10.1038/s41386-020-0734-8] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 05/21/2020] [Accepted: 06/01/2020] [Indexed: 12/13/2022]
Abstract
The debate about electronic cigarettes is dividing healthcare professionals, policymakers, manufacturers, and communities. A key limitation in our understanding of the cause and consequences of vaping is the lack of animal models of nicotine vapor self-administration. Here, we developed a novel model of voluntary electronic cigarette use in rats using operant behavior. We found that rats voluntarily exposed themselves to nicotine vapor to the point of reaching blood nicotine levels that are similar to humans. The level of responding on the active (nicotine) lever was similar to the inactive (air) lever and lower than the active lever that was associated with vehicle (polypropylene glycol/glycerol) vapor, suggesting low positive reinforcing effects and low nicotine vapor discrimination. Lever pressing behavior with nicotine vapor was pharmacologically prevented by the α4β2 nicotinic acetylcholine receptor partial agonist and α7 receptor full agonist varenicline in rats that self-administered nicotine but not vehicle vapor. Moreover, 3 weeks of daily (1 h) nicotine vapor self-administration produced addiction-like behaviors, including somatic signs of withdrawal, allodynia, anxiety-like behavior, and relapse-like behavior after 3 weeks of abstinence. Finally, 3 weeks of daily (1 h) nicotine vapor self-administration produced cardiopulmonary abnormalities and changes in α4, α3, and β2 nicotinic acetylcholine receptor subunit mRNA levels in the nucleus accumbens and medial prefrontal cortex. These findings validate a novel animal model of nicotine vapor self-administration in rodents with relevance to electronic cigarette use in humans and highlight the potential addictive properties and harmful effects of chronic nicotine vapor self-administration.
Collapse
Affiliation(s)
- Lauren C. Smith
- grid.214007.00000000122199231Department of Neuroscience, The Scripps Research Institute, 10550N. Torrey Pines Road, La Jolla, CA USA ,Department of Psychiatry, School of Medicine, University of California, La Jolla, San Diego, CA USA
| | - Marsida Kallupi
- Department of Neuroscience, The Scripps Research Institute, 10550N. Torrey Pines Road, La Jolla, CA, USA. .,Department of Psychiatry, School of Medicine, University of California, La Jolla, San Diego, CA, USA.
| | - Lani Tieu
- Department of Psychiatry, School of Medicine, University of California, La Jolla, San Diego, CA USA
| | - Kokila Shankar
- grid.214007.00000000122199231Department of Neuroscience, The Scripps Research Institute, 10550N. Torrey Pines Road, La Jolla, CA USA ,Department of Psychiatry, School of Medicine, University of California, La Jolla, San Diego, CA USA
| | - Abigail Jaquish
- grid.266102.10000 0001 2297 6811Department of Pediatrics, University of California, La Jolla, CA USA
| | - Jamie Barr
- grid.266102.10000 0001 2297 6811Department of Pediatrics, University of California, La Jolla, CA USA
| | - Yujuan Su
- grid.266102.10000 0001 2297 6811Department of Pediatrics, University of California, La Jolla, CA USA
| | - Nathan Velarde
- Department of Psychiatry, School of Medicine, University of California, La Jolla, San Diego, CA USA
| | - Sharona Sedighim
- Department of Psychiatry, School of Medicine, University of California, La Jolla, San Diego, CA USA
| | - Lieselot L. G. Carrette
- grid.214007.00000000122199231Department of Neuroscience, The Scripps Research Institute, 10550N. Torrey Pines Road, La Jolla, CA USA ,Department of Psychiatry, School of Medicine, University of California, La Jolla, San Diego, CA USA
| | | | - Xin Sun
- grid.266102.10000 0001 2297 6811Department of Pediatrics, University of California, La Jolla, CA USA
| | - Giordano de Guglielmo
- grid.214007.00000000122199231Department of Neuroscience, The Scripps Research Institute, 10550N. Torrey Pines Road, La Jolla, CA USA ,Department of Psychiatry, School of Medicine, University of California, La Jolla, San Diego, CA USA
| | - Olivier George
- Department of Neuroscience, The Scripps Research Institute, 10550N. Torrey Pines Road, La Jolla, CA, USA. .,Department of Psychiatry, School of Medicine, University of California, La Jolla, San Diego, CA, USA.
| |
Collapse
|
5
|
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.
Collapse
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
| |
Collapse
|
6
|
GC-MS Analysis and Cytotoxicity Evaluation of Shammah (Smokeless Tobacco) Samples of Jazan Region of Saudi Arabia as Promoter of Cancer Cell Proliferation. J CHEM-NY 2019. [DOI: 10.1155/2019/3254836] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Shammah is a locally manufactured form of smokeless tobacco (ST) which is traditionally used in Middle Eastern countries including Saudi Arabia, Sudan, and Yemen. Presence of a high concentration of nicotine, in addition to various other toxic and carcinogenic constituents, makes it a serious human health threat. It is an admixture containing powdered tobacco, along with several additives, such as lime, ash, black pepper, volatile oils, and flavoring agents. This study was conducted to investigate the constituents of eight different samples of widely used shammah varieties in the Jazan region of Saudi Arabia using GC-MS and to evaluate their cytotoxic effect against three cancer cell lines representing most of the top malignancies in the region including MCF-7, A2780, and HT29 cancer cells, in addition to MRC5 cells (normal human fetal lung fibroblast) using the MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay. GC-MS analysis showed the presence of nicotine or 3-(1-methyl-2-pyrrolidinyl)pyridine (2.1–91.9% of total constituents detected) in all ST samples, whereas its derivative (1s,2s)-nicotine-N-oxide (0.23–1.62%) was detected in four samples. In addition, several known carcinogenic constituents were also identified, and their carcinogenicity was confirmed by MTT results, in which, all the eight samples promoted the growth of MCF7, A2780, and HT29 cancer cells. The cytotoxic effects of samples against the normal cells MRC5 was proportional to the number of components detected by GC-MS. The ingestion of these constituents through saliva of shammah consumers could be the reason for many cancers including breast, ovary, and colon cancers. These results support the urgent local and international call to educate the users regarding the deleterious effects of shammah to avoid its use.
Collapse
|
7
|
Li L, Zhou X, Wang Y. Smokeless tobacco extract inhibits proliferation and promotes apoptosis in oral mucous fibroblasts. Oncol Lett 2018; 16:5066-5074. [PMID: 30250574 PMCID: PMC6144942 DOI: 10.3892/ol.2018.9252] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Accepted: 04/23/2018] [Indexed: 01/01/2023] Open
Abstract
The consumption of smokeless tobacco extract (STE) is growing rapidly, and it has been implicated in several human diseases including diabetes, inflammation and a number of types of cancer. The toxicity of STE requires evaluation, as it is known to induce numerous public health issues. To investigate whether STE serves a role in cultured human oral mucosa fibroblasts (hOMFs), the present study examined HOMF morphology with inverted microscopy and immunofluorescence staining. The cell viability was measured with MTT assays, which detected the cell apoptosis rate via flow cytometry. The activities of reactive oxygen species (ROS), malondialdehyde (MDA), superoxide dismutase (SOD), and catalase (CAT) were measured via flow cytometry and commercial kits, subsequent to exposing the cells to various concentrations of STE. Reverse transcription quantitative polymerase chain reaction and western blot analyses were used to demonstrate that the mRNA and the protein expression levels of cell cycle-associated genes (cyclin-dependent kinase inhibitor 1 and cyclin D1), apoptosis-associated genes [B cell lymphoma 2 (Bcl-2) and Bcl-2-associatied X protein], tumor protein (p53), nuclear factor kappa light chain enhancer of activated B cells (NF-κB)-transcription factor (p65) signaling pathways, NF-E2-related factor 2 (Nrf2), heme oxygenase-1 (HO-1) and NAD(P)H: quinoneoxidoreductase1 (NQO1). The results indicated that the hOMF cells were positive for cytokeratin staining. STE induced G1-S cell cycle progression and cell apoptosis by regulating the cell cycle or apoptosis-associated proteins. STE treatment increased the concentrations of ROS and MDA, and decreased the concentrations of SOD and CAT. STE unregulated phosphorylated-p53, NF-κB p65, Nrf2, HO-1, and NQO1 expression levels in the hOMF cells. The present study demonstrated that STE appears to promote oral disease.
Collapse
Affiliation(s)
- Lei Li
- Department of Stomatology, Jining No. 1 People's Hospital, Jining, Shandong 272011, P.R. China
| | - Xiaoqing Zhou
- Department of Oral and Maxillofacial Surgery, Jining No. 1 People's Hospital, Jining, Shandong 272011, P.R. China
| | - Yanran Wang
- Department of Stomatology, Jining No. 1 People's Hospital, Jining, Shandong 272011, P.R. China
| |
Collapse
|
8
|
Lallier TE, Moylan JT, Maturin E. Greater Sensitivity of Oral Fibroblasts to Smoked Versus Smokeless Tobacco. J Periodontol 2017; 88:1356-1365. [PMID: 28708037 DOI: 10.1902/jop.2017.170232] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND Smokers have an increased incidence and severity of periodontal disease. Although cigarette smoke contains >4,000 chemical components that could affect periodontal tissues, less is understood about the effect of smokeless tobacco. Therefore, this study compares the effects of cigarette smoke extract (CSE) and smokeless tobacco extract (STE) on cell survival and motility of periodontal ligament (PDL) and gingival fibroblasts in vitro. METHODS PDL and gingival fibroblasts were exposed to various concentrations of CSE, STE, or nicotine alone. Viable cells were labeled with calcein acetoxymethyl, visualized using fluorescent microscopy, and quantified using a fluorescence multi-well plate reader. In vitro wounding and collagen gel contraction assays were used to assess cell motility. RESULTS Both gingival and PDL fibroblasts displayed reduced cell viability with increasing concentrations of CSE and STE. Based on relative nicotine content, CSE was significantly more cytotoxic than STE. PDL fibroblasts were also more sensitive to both CSE and STE compared with gingival fibroblasts. Finally, sublethal doses of CSE reduced cell motility and gel contraction, whereas STE had less effect. Nicotine alone ≤0.5 mM had little to no effect in any of these assays. CONCLUSIONS Many of the underlying effects of tobacco products on periodontal tissues may be due to direct inhibition of normal fibroblast function. CSE is found to be more deleterious to the function of both PDL and gingival fibroblasts than STE. PDL fibroblasts appear to be more sensitive to CSE and STE than gingival fibroblasts. Therefore, cigarette smoke may have more profound effects than smokeless tobacco.
Collapse
Affiliation(s)
- Thomas E Lallier
- Department of Cell Biology and Anatomy, School of Dentistry, Louisiana State University Health Science Center, New Orleans, LA.,Department of Oral Biology, Center of Excellence in Oral and Craniofacial Biology, School of Dentistry, Louisiana State University Health Science Center.,Department of Periodontics, School of Dentistry, Louisiana State University Health Science Center
| | - John T Moylan
- Department of Oral Biology, Center of Excellence in Oral and Craniofacial Biology, School of Dentistry, Louisiana State University Health Science Center
| | - Erin Maturin
- Department of Pediatric Dentistry, School of Dentistry, Louisiana State University Health Science Center
| |
Collapse
|