title: Comparative analysis on the effect of palm oil (Elaeis guineensis) in reducing cadmium and lead accumulation in liver of Wistar rats.
abstract: BACKGROUND
  Palm oil from Elaeis guineensis is an edible nutrient substance with anti-inflammatory and antioxidant properties. We examined its protective effect against lead (Pb) and cadmium (Cd) accumulation in the liver.
  
  
  METHODS
  12% w/w of palm oil (PO) in rat chow concentrate was fed to rats exposed to Cd (200ppm) and Pb (100ppm) in drinking water at different feeding regimens. PO was administered either at the same time with the metals (group 2), post-treatment after exposure (group 3) or pre-treatment before exposure (group 4) for six weeks. The heavy metal accumulations in the liver were determined using AAS.
  
  
  RESULTS
  Weight losses induced by these metals were significantly (P<0.05) reversed by PO administration. Analysis among the groups showed that post-treatment group had a significant (P<0.05) higher percentage protection to Cd, but same time treatment for Pb (P<0.05) when compared with other groups. The protective ability to PO was only significantly (P<0.05) increased for Pb at week 2, but showed a time-dependent significant (P<0.05) increase for Cd across all treatment regimens.
  
  
  CONCLUSIONS
  PO is beneficial in reducing metal accumulation in the liver and has a higher hepatoprotective effect to Cd compared to Pb at the selected doses by possibly affecting the processes of uptake, assimilation and elimination of these metals.
authors.affiliation: Department of Basic Medical Sciences, University of the West Indies, Mona Campus, Kingston 7, Jamaica, Nigeria.
authors.forename: Chukwuemeka R
authors.initials: CR
authors.lastname: Nwokocha
authors.forename: Magdalene I
authors.initials: MI
authors.lastname: Nwokocha
authors.forename: Daniel U
authors.initials: DU
authors.lastname: Owu
authors.forename: Joshua
authors.initials: J
authors.lastname: Obi
authors.forename: Bukola
authors.initials: B
authors.lastname: Olatunde
authors.forename: Chioma
authors.initials: C
authors.lastname: Ebe
authors.forename: Ozioma
authors.initials: O
authors.lastname: Nwangwu
authors.forename: Moses O
authors.initials: MO
authors.lastname: Iwuala