Vitamin E-bisphosphonate Conjugates: A New Therapeutic Approach Targeting Pathological Bone Loss Associated With Osteoporosis
Funder
National Health and Medical Research Council
Funding Amount
$471,984.00
Summary
Approximately 2 million Australians have osteoporosis, a disease which increases the risk of fracture and whose monetary and social costs are large and growing. The objective of this proposal is to exploit the osteotropic properties of novel compounds of vitamin E (VE) derivatives (BPVE) conjugated to bisphosphonates (BP), which will have anti-oxidant, anti-osteolytic and bone anabolic properties, and will be taken up selectively in the skeleton for the treatment of osteoporosis.
Gamma-Tocopherol: An Important Dietary Factor For Protection Against Cardiovascular Disease
Funder
National Health and Medical Research Council
Funding Amount
$341,575.00
Summary
Heart disease is one of the most common causes of death in Western Countries. Oxidative damage is thought to be a major contributor to the development of a number of chronic diseases such as heart disease. Oxidative damage can occur in states of oxidative stress when the body's antioxidant defences cannot prevent damage caused by free radicals or other oxidants. Antioxidant vitamins help defend against oxidative injury and therefore should help to protect against such diseases as heart disease ( ....Heart disease is one of the most common causes of death in Western Countries. Oxidative damage is thought to be a major contributor to the development of a number of chronic diseases such as heart disease. Oxidative damage can occur in states of oxidative stress when the body's antioxidant defences cannot prevent damage caused by free radicals or other oxidants. Antioxidant vitamins help defend against oxidative injury and therefore should help to protect against such diseases as heart disease (atherosclerosis). Population studies support the view that dietary antioxidants such as vitamin E help to protect against heart disease. However, several large studies giving subjects vitamin E supplements (pure alpha tocopherol) showed no benefits or protection against heart disease. There is a cruicial difference between supplements and dietary intake of vitamin E. Supplements contain only alpha tocopherol while dietary sources derived from seeds, nuts, grain and oils is a mixture of different forms of tocopherol. Recent evidence suggests that one of these forms (gamma-tocopherol) has different properties to alpha-tocopherol and can protect against certain oxidants in ways that alpha-tocopherol cannot. We have developed a specialised assay to detect forms of gamma-tocopherol in human plasma that have reacted with toxic oxidants. Using this assay we have shown that people with heart desease may have higher levels of these products in their blood than people without heart disease. This project will investigate the effects of gamma and alpha tocopherol dietary supplements on risk factors for heart disease. It will also investigate how gamma tocopherol may be working to protect against the development of heart disease. These studies could have important implications for what type of diet or dietary supplement is most beneficial to protect against heart disease.Read moreRead less
Antioxidants Vitamin C And Vitamin E For The Prevention Of Pre-eclampsia - A Randomised Controlled Trial
Funder
National Health and Medical Research Council
Funding Amount
$696,750.00
Summary
Women who develop hypertension in pregnancy have a higher risk of complications in pregnancy and their babies are often born smaller than average and earlier. An initial trial to women at high risk of pre-eclampsia suggest that vitamin C and vitmin E supplements may decrease both reduce the risk of developing hypertension in pregnancy and the risk of the infant being born small for dates. These encouraging results need assessment in the Australian population. This study assesses the value of wom ....Women who develop hypertension in pregnancy have a higher risk of complications in pregnancy and their babies are often born smaller than average and earlier. An initial trial to women at high risk of pre-eclampsia suggest that vitamin C and vitmin E supplements may decrease both reduce the risk of developing hypertension in pregnancy and the risk of the infant being born small for dates. These encouraging results need assessment in the Australian population. This study assesses the value of women taking vitamin C and vitamin E supplements during the antenatal period to decrease the risk of developing hypertension during pregnancy and poor fetal growth. Such an easy and inexpensive therapy, if effective, would be an important advance.Read moreRead less