In vitro experiments have shown that tobacco smoke extract activates the MAPK/AP-1 signaling pathway and promotes aberrant proliferation of urothelial cells 23 , while nicotine contributes to tumor progression and chemoresistance through activation of the PI3K/AKT/mTOR signaling axis 24
10.1016/j.puhe.2014.08.002 Summary Keywords smokeless tobacco, gutkha, periodontitis, clinical attachment loss, gingival recession, rural health, India, SLT Citation Siddiqui LT, Yadadi SS, Acharya AB, Mohammed MM, Shehadat SA, Vinay V, Desai V and Shetty RM (2025) Prevalence of smokeless tobacco use and its impact on periodontal health among adults in Rajnandgaon, Chhattisgarh, India: a cross-sectional study
Yet a considerable part of the total market is also fed by a veritable phalanx of smaller, independently-operating leaf suppliers, who may have some advantages over the big players
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PMID 30194085