DNA adducts derived from complex mixtures of polycyclic aromatic compounds emitted from tobacco smoke are compared to industrial pollution sources (e.g., coke ovens and aluminum smelters), smoky coal burning, and urban air pollution. Exposures to coke oven emissions and smoky coal, both potent rodent skin tumor initiators and lung carcinogens in humans, result in high levels of DNA adducts comp...

The nitric oxide radical (*NO) released from tobacco-related compounds induces DNA damage, protein modifications, and cellular toxicity through the formation of peroxynitrite (ONOO-), the reaction product of *NO and the oxygen radical, superoxide. We hypothesize that tobacco-related compounds are cytotoxic and induce quantifiable DNA single-strand breaks in immortalized hamster cheek pouch (POI...

ôbjective: ït is well known that tobacco smoking is a major preventable cause of morbidity and mortality. üse of smokeless tobacco such as paan, nass, gutka, and tumbaku is common in south and southeast âsia but not in ïran, where it is not considered as a normal cultural habit. methods: â cross-sectional study was carried out in five colleges of sistan baloochestan, the southeastern province o...

For the first time, the behaviour of tobacco cell suspensions submitted to four porphyrins was described. The potential killer effect of these photosensitizers on tobacco cells was evaluated. Biological results were correlated with photophysical properties and the reactive oxygen species production capacity of tested compounds. Surprisingly, the anionic free-base porphyrin showed the strongest ...

Tobacco mosaic virus infection of Nicotiana tabacum mesophyll protoplasts did not affect the pattern of chloroplast or total cellular DNA synthesis for at least 120 h when compared with that of mock-infected cells. Calli derived from infected protoplasts often showed large amounts of tobacco mosaic virus RNA and coat protein.

onion thrips, thrips tabaci lindeman, is a broadly distributed pest that attacks a wide range of crops. to investigate the intra-specific morphometric variation and the genetic diversity of the species in iran, four populations from tobacco plus 18 populations from onion were studied in some 17 provinces of iran. morphological analysis, using principal components and canonical discriminant anal...

Tobacco smoking is one of the urgent social and medical problems our time, as well cause many serious diseases (oncological, cardiovascular, respiratory, etc.). The prevalence in Ukraine remains at a fairly high level: on average, 40.1% men 8.9% women smoke (this almost ¼ entire adult population). harmful effects tobacco are known to doctors various specialties, but few people pay attention fac...

Background: Both hypertension (HTN) and tobacco addiction pose a threat to the health, environment, and socioeconomic status (SES) of the people. When tobacco use disorder exists in people with HTN, it hastens the disease progress and causes early complications. The present study aimed to study the knowledge and practice of tobacco addiction in patients with HT...

During degradation of glutathione in tobacco suspension cultures substancial amounts of 5-oxo-proline are formed in vivo as well as in crude cell homogenates in vitro. The existance of a 5-oxo-prolinase that catalyzes the conversion of 5-oxo-proline to glutamic acid was demonstrated in tobacco cells, grown with glutathione as sole sulfur source.

The conventional analysis of pesticide residues in analytical commodities, such as tobacco and tobacco products is a labor intensive procedure, since it is necessary to cover a wide range of different chemicals, using a single procedure. Standard analysis methods include extensive sample pretreatment (with solvent extraction and partitioning phases) and determination by GC and HPLC to achieve t...