Table 2: Source: Major carcinogenic and genotoxic agents in pan masala and gutkha [6].

Products

Ingredients

Genotoxic agents/carcinogens

Gutkha

Tobacco

NNN, NNK

 

Areca nut

arecoline, MNPN

 

Areca nut + lime

ROS

 

Catechu + lime

ROS

Pan masala

Areca nut

arecoline, MNPN

 

Areca nut + lime

ROS

 

Catechu + lime

ROS

NNN, N'-nitrosonornicotine; NNK, 4-(methylnitrosamine)-1-(3-pyridyle)-1-butanone; MNPN, 3 (methylnitrosamine) propionitrile; ROS, reactive oxygen species, O-, H2O2, OH.

aFor structures and pathways see Figures 2 and Figure 3.