β-Sitosterol-Dietary sources and role in cancer and diabetes management.

β-Sitosterol is a major bioactive constituent and the most abundant phytosterol in nuts, seeds, and vegetable oils. It is structurally similar to cholesterol, except for the addition of the ethyl group. The primary benefit of β-sitosterol is that it lowers the body's absorption of low-density lipoprotein, or "bad" cholesterol.

Subcellular distribution and characterization of glucosephosphate isomerase in Leishmania mexicana mexicana.

The glycolytic enzyme glucosephosphate isomerase (PGI) is present in two different cell compartments of Leishmania mexicana promastigotes; more than 90% of the activity was detected in the cytosol, the remainder in glycosomes. This subcellular distribution contrasts with that in Trypanosoma brucei, in which the enzyme activity has been mainly located in the glycosomes. PGI was partially purified from L.