Autophagy, an intracellular degradation process, has emerged as a crucial innate immune response against various plant pathogens, including viruses. Tomato spotted wilt orthotospovirus (TSWV) is a highly destructive plant pathogen that infects over 1000 plant species and poses a significant threat to global food security. However, the role of autophagy in defence against the TSWV pathogen, and whether the virus counteracts this defence, remains unknown. In this study, we report that autophagy plays an important role in antiviral defence against TSWV infection; however, this autophagy-mediated defence is counteracted by the viral effector NSs. Transcriptome profiling revealed the up-regulation of autophagy-related genes (ATGs) upon TSWV infection. Blocking autophagy induction by chemical treatment or knockout/down of ATG5/ATG7 significantly enhanced TSWV accumulation. Notably, the TSWV nucleocapsid (N) protein, a major component of the viral replication unit, strongly induced autophagy. However, the TSWV nonstructural protein NSs was able to effectively suppress N-induced autophagy in a dose-dependent manner. Further investigation revealed that NSs inhibited ATG6-mediated autophagy induction. These findings provide new insights into the defence role of autophagy against TSWV, a representative segmented negative-strand RNA virus, as well as the tospoviral pathogen counterdefence mechanism.
OBJECTIVES: Increasing tobacco excise tax is one of the most effective smoking-prevention tools. The aim of the study is to assess the use of this tool in the Czech Republic (CR) by studying trends in cigarette taxes, prices, tax revenue, and the affordability of cigarettes in the CR. METHODS: Data on cigarette consumption, their tax rates, price, and tax revenue in the CR for 2004-2020 come from multiple sources. We used the consumer price index to convert nominal values to real values. Given an average daily consumption of 12.7 cigarettes per smoker, the affordability of cigarettes was measured as a percentage of the average monthly wage needed to buy 19 cigarette packs. RESULTS: Despite recent increases in excise taxes, cigarettes in the CR are becoming more affordable. We found that the affordability of cigarettes was greater in 2020 than in 2008. The values of both the specific and the minimum excise taxes are currently being eroded by inflation. Cigarette consumption has declined from 2015 to 2020, and the government still received a bit more excise tax revenue due to its earlier tax policy. However, if taxes are not increased further, the revenue will start to decline. CONCLUSIONS: Despite the trend of increasing tobacco taxes in the CR, both the affordability of cigarettes and their use are still high in the country. This means that the CR is not using tax policy effectively enough to reduce smoking prevalence. It needs a substantial and sudden tax increase, in addition to the currently planned tax increases, to reduce smoking prevalence and lower the burden of tobacco use in the economy. Such a move would not only improve public health in the CR, but also increase government revenue.
- MeSH
- daně MeSH
- kouření epidemiologie MeSH
- lidé MeSH
- obchod MeSH
- prevence kouření MeSH
- tabák * MeSH
- tabákové výrobky * MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
- Geografické názvy
- Česká republika MeSH
Objectives: Our aim was to examine the relationship between weight concerns (WC) and smoking cessation. Methods: WC was assessed before smoking cessation treatment in 671 adult patients who completed a 12-month follow-up visit at the Centre for Tobacco-Dependent, Prague, Czech Republic, from 2013 through 2019. We evaluated the abstinence rate at 12-month follow-up. Results: Among 669 patients with baseline WC (mean age, 43.4 years), 47% were women (145/306) and 21% were men (78/363). No association existed between WC and abstinence at 12 months. Smokers with obesity had increased fear of gaining weight (34% versus 24% of overweight and 23% of healthy-weight smokers) (p=.034) and were less confident in their ability to maintain their current weight (36% versus 55% of overweight smokers and 59% of healthy- weight smokers) (p<.001). Conclusions: Many smokers are concerned about gaining weight after stopping smoking, but in this cohort of patients, having WC was not associated with 12-month abstinence, but obesity or overweight was related to being afraid of postcessation weight-gain and low confidence for maintaining weight. Practitioners should be aware of the prevalence of WC in those stopping smoking and should address concerns, such as poor motivation and low confidence about managing their weight.
OBJECTIVES: This study assessed trends in tobacco use in students of the Third Faculty of Medicine of Charles University in the Czech Republic between academic years 2012/13 and 2019/2020. METHODS: Two cross-sectional surveys designed to obtain information on smoking history, smoking status, tobacco products use, and cessation were conducted among 382 students of the 6-year Master's Study Programme (General Medicine) and the 3-year Bachelor's Study Programme (Public Health) in 2012/2013; and among 580 students of General Medicine and of the Bachelor's Study Programmes (Public Health, Dental Hygiene and Nursing) in 2019/2020. RESULTS: Regular/daily smoking was reported by 4.4 ± 2.4% (with 95% CI) of General Medicine students and 4.8 ± 4.1% of Public Health students in 2012/2013, and 1.3 ± 1.1% of General Medicine students and 14.4 ± 4.8% of students of bachelor studies in 2019/2020. The share of regular and occasional smokers was higher among junior students in both academic years (23.9 ± 5.1% and 20.1 ± 4.7%, respectively) compared to senior students (23.6 ± 9.8% and 9.6 ± 5.7%). Cigarettes were the most common products used in both academic years (67.0 ± 4.7% and 45.5 ± 4.0%). There was a significant increase in proportion of students using more tobacco products in the course of the time (from 12.1 ± 3.1% to 53.7 ± 4.1%). The proportion of students who quitted smoking has risen from 11.4 ± 3.2% to 16.1 ± 3.0%. On the contrary, the proportion of students who started smoking has dropped from 15.9 ± 3.7% to 2.9 ± 1.4%. The proportion of non-smokers has risen from 57.6 ± 5.0% to 65.3 ± 3.9%. CONCLUSIONS: The study revealed some positive trends concerning tobacco use in students (decline in regular smokers among students of General Medicine, senior students, cigarette smokers, water pipe smokers; rise in non-smokers), but also negative ones (rise in regular smokers among students of Public Health, students who used more tobacco products).
- MeSH
- akademický sbor MeSH
- lidé MeSH
- prevalence MeSH
- průřezové studie MeSH
- průzkumy a dotazníky MeSH
- studenti * MeSH
- tabák MeSH
- tabákové výrobky * MeSH
- univerzity MeSH
- užívání tabáku MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
- Geografické názvy
- Česká republika MeSH
OBJECTIVES: The aim of this study is to analyse Global Youth Tobacco Survey (GYTS) data on a prevalence of tobacco use, indicators of tobacco control and pro-tobacco activities in Czechia and Slovakia between 2002 and 2016. METHODS: GYTS is a school-based survey of students aged 13-15 years carried out in Czechia and Slovakia in 2002/2003, 2007, 2011 and 2016. Standardized uniform questionnaires provided representative data. RESULTS: Between 2002 and 2016 the current cigarette smoking declined both in Czechia and Slovakia (from 34.6% and 26.4% to 15.2% and 17.1%, respectively). Indicators of tobacco control activities either did not change (access to buy cigarettes by minors) or decreased (school-based and mass media interventions). Indicators of pro-tobacco activities declined (being ever offered by a free tobacco product and having something with a tobacco product brand logo on it). CONCLUSIONS: Tobacco use is on decline and the situation becomes similar to the most of European countries. Preventive activities are only partially responsible for the process. Rather effect of global trends accelerated by widespread use of social media can play a role.
- MeSH
- lidé MeSH
- mladiství MeSH
- prevalence MeSH
- průzkumy a dotazníky MeSH
- tabák * MeSH
- tabákové výrobky * MeSH
- užívání tabáku epidemiologie MeSH
- Check Tag
- lidé MeSH
- mladiství MeSH
- Publikační typ
- časopisecké články MeSH
- Geografické názvy
- Česká republika MeSH
- Slovenská republika MeSH
Brassinosteroids (BRs) are steroid hormones regulating various aspects of plant metabolism, including growth, development and stress responses. However, little is known about the mechanism of their impact on antioxidant systems and phospholipid turnover. Using tobacco plants overexpressing H+/Ca2+vacuolar Arabidopsis antiporter CAX1, we showed the role of Ca2+ ion balance in the reactive oxygen species production and rapid phosphatidic acid accumulation induced by exogenous BR. Combination of our experimental results with public transcriptomic and proteomic data revealed a particular role of Ca2+-dependent phospholipid metabolizing enzymes in BR signaling. Here we provide novel insights into the role of calcium balance and lipid-derived second messengers in plant responses to exogenous BRs and propose a complex model integrating BR-mediated metabolic changes with phospholipid turnover.
- MeSH
- antioxidancia MeSH
- brassinosteroidy * MeSH
- proteomika MeSH
- tabák MeSH
- vápník MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
OBJECTIVES: This article deals with the comparison of excise tax revenues from alcoholic beverages and tobacco products with public spending that are spent on treating diseases occurring in consumers of these commodities. METHODS: Based on available data, the study estimates direct public expenditures on the treatment of tobacco-related diseases and very frequent alcohol consumption-related diseases in the Czech Republic. These partial results are evaluated in the context of tax revenues from consumption of the mentioned commodities. The analysis works with the data from 1998-2017, which was obtained from the Ministry of Health of the Czech Republic, the National Institute of Public Health, the Customs Administration of the Czech Republic, the Ministry of Finance of the Czech Republic, and the Czech Statistical Office. RESULTS: Medical treatment costs of smoking-related diseases were 18.35-48.19 billion CZK per year in the analysed period. These expenditures in the period 1998-2011 exceeded the annual revenues from the tax on tobacco products (in 2002 by 12.08 billion CZK). Since 2012, the balance has been positive in favour of public spending. Expenditures on the treatment of alcohol-related diseases amounted to 9.66-25.36 billion CZK per year in the given period, the expenditures, except the year 1998, exceeded the revenues from alcoholic beverages taxes (by 14.63 billion CZK in 2009). CONCLUSIONS: The study shows that the excise tax revenues for tobacco products do not reach the level of healthcare spending for tobacco-related disease in the most of the analysed period, and this difference increases with the length of consumption, which can be interpreted in such a way that current excise tax revenues potentially mean public healthcare expenditures, which cumulatively exceed revenues from the relevant excise duties.
- MeSH
- daně MeSH
- lidé MeSH
- prevence kouření MeSH
- tabák * MeSH
- tabákové výrobky * MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
- Geografické názvy
- Česká republika MeSH
OBJECTIVE: Exposure to third-hand smoke (THS) poses health risk, especially for children. THS is mostly ignored in Turkey. The aim of this study is to adapt the Beliefs about Third-Hand Smoke (BATHS) scale to Turkish. METHODS: The BATHS scale consists of 9 items, and the data collected from 273 people was considered sufficient for analyses in this methodological study. The BATHS scale is translated into Turkish and confirmatory factor analysis (CFA) was performed for the construct validity analysis of the scale. RESULTS: The correlation between the overall BATHS scale and its two sub-dimensions was 0.937 (p < 0.001), and the correlation between the health and persistence sub-dimensions was 0.775 (p < 0.001). Since there was a statistically positive and highly significant relationship, the adapted BATHS scale was considered structurally compatible with the sub-dimensions. The reliability value of the entire scale is 0.90. Test-retest correlation values between the health and persistence dimensions were between 0.745 and 0.960, the values obtained were above 0.70 and had a statistically positive and high level of significant relationship (p < 0.001). CONCLUSIONS: It is concluded that the Turkish version of the BATHS scale is reliable and valid. This scale will allow further research and training on third-hand smoke exposure. Tobacco control programmes success will improve.
The gene coding for the telomerase reverse transcriptase (TERT) is essential for the maintenance of telomeres. Previously we described the presence of three TERT paralogs in the allotetraploid plant Nicotiana tabacum, while a single TERT copy was identified in the paleopolyploid model plant Arabidopsis thaliana. Here we examine the presence, origin and functional status of TERT variants in allotetraploid Nicotiana species of diverse evolutionary ages and their parental genome donors, as well as in other diploid and polyploid plant species. A combination of experimental and in silico bottom-up analyses of TERT gene copies in Nicotiana polyploids revealed various patterns of retention or loss of parental TERT variants and divergence in their functions. RT-qPCR results confirmed the expression of all the identified TERT variants. In representative plant and green algal genomes, our synteny analyses show that their TERT genes were located in a conserved locus that became advantageous after the divergence of eudicots, and the gene was later translocated in several plant groups. In various diploid and polyploid species, translocation of TERT became fixed in target loci that show ancient synapomorphy.
