MadSci Network: General Biology |
Scientists use many kinds of model systems to study cholesterol and its negative effects on the arteries of the heart, i.e. atherosclerosis. The most common organisms studied have been rodents (mice, hamsters, guinea pigs, rats, and rabbits), birds (chickens, quails, and pigeons), dogs, cats, pigs, and monkeys (nonhuman primates). The simpler experiments done by scientists involved feeding these animals high cholesterol/fat diets (so-called arthrogenic diets). Changes in weight, total plasma cholesterol, and high-density lipoprotein (HDL) cholesterol were taken as indicators of the effect of diet or heredity (genes) in developing heart disease. It shows very creative thinking, that you have proposed using insects, earthworms or zooplankton to study atherosclerosis. Unfortunately, I could find no references in which these organisms were used to study atherosclerosis. Studies which mentioned these organisms used them primarily as dietary supplements or indicators of pollution. This leads me to believe that insects, worms, and zooplankton have not been developed as models systems for atherosclerosis. That does not mean that they could never be used to study this process. The challenge would be determining what you could measure that would be a fair/ accurate indicator of cholesterol effects on the arteries of the heart. In my reading, I came across an article which discussed the effects of ginger on cholesterol (see http:// www.healthyliving.co.nz/downloads/ ginger_winter_mag_2002.pdf.). Can you think of a project with hamsters or chicks that would address whether ginger, as a food supplement, has any effect on cholesterol? Remember that obesity (being overweight) has a high correlation with heart disease. Good luck with your project!
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