heliotrine/neoplasms

Pretreatment of rats with large doses of nicotinamide, which has been shown to increase the incidence of pancreatic islet-cell tumors after streptozotocin and after heliotrine, appears to promote the development of kidney neoplasias in rats given several doses of diethylnitrosamine. Nicotinamide,

Pyrrolizidine alkaloids (PA) are secondary plant metabolites that occur as food and feed contaminants. Acute and subacute PA poisoning can lead to severe liver damage in humans and animals, comprising liver pain, hepatomegaly and the development of ascites due to occlusion of the hepatic sinusoids

Several pyrrolizidine alkaloids have been demonstrated to have antitumor activity in experimental tumor systems. In general the free base form of the alkaloid exhibits greater biological activity than the corresponding N-oxide and the N-oxide must be metabolized to the base for the subsequent

Niacinamide (aka nicotinamide) and Niacin (aka nicotinic acid) are heterocyclic aromatic compounds which function in cosmetics primarily as hair and skin conditioning agents. Niacinamide is used in around 30 cosmetic formulations including shampoos, hair tonics, skin moisturizers, and cleansing