This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Discuss the essential nature of selenium. Where and why are deficiencies observed in the world? ... (Read 22 times)

Beheh

  • Hero Member
  • *****
  • Posts: 520
on: Aug 20, 2018
Discuss the essential nature of selenium. Where and why are deficiencies observed in the world?
 
  What will be an ideal response?

Question 2

Discuss the role of copper in the disorders Menkes disease and Wilson's disease.
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Eunice618

  • Sr. Member
  • ****
  • Posts: 350
Reply #1 on: Aug 20, 2018
Answer to Question 1

Selenium is one of the body's antioxidant nutrients, working primarily as a part of proteinsmost notably, the glutathione peroxidase enzymes. Glutathione peroxidase and vitamin E work in tandem. Glutathione peroxidase prevents free-radical formation, thus blocking the chain reaction before it begins; if free radicals do form and a chain reaction starts, vitamin E stops it.

Answer to Question 2

Two rare genetic disorders affect copper status in opposite directions. In Menkes disease, the intestinal cells absorb copper, but cannot release it into circulation, causing a life-threatening deficiency. Treatment involves giving copper intravenously. In Wilson's disease, copper accumulates in the liver and brain, creating a life-threatening toxicity. Wilson's disease can be controlled by reducing copper intake, using chelating agents such as penicillamine, and taking zinc supplements, which interfere with copper absorption.


Beheh

  • Member
  • Posts: 520
Reply 2 on: Aug 20, 2018
Great answer, keep it coming :)

peter

  • Member
  • Posts: 330
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

Did you know?

Cutaneous mucormycosis is a rare fungal infection that has been fatal in at least 29% of cases, and in as many as 83% of cases, depending on the patient's health prior to infection. It has occurred often after natural disasters such as tornados, and early treatment is essential.

Did you know?

According to animal studies, the typical American diet is damaging to the liver and may result in allergies, low energy, digestive problems, and a lack of ability to detoxify harmful substances.

Did you know?

Fatal fungal infections may be able to resist newer antifungal drugs. Globally, fungal infections are often fatal due to the lack of access to multiple antifungals, which may be required to be utilized in combination. Single antifungals may not be enough to stop a fungal infection from causing the death of a patient.

Did you know?

Limit intake of red meat and dairy products made with whole milk. Choose skim milk, low-fat or fat-free dairy products. Limit fried food. Use healthy oils when cooking.

Symptoms of mineral deficiencies. Symptoms of mineral deficiencies.
Smallest Cat in the world Smallest Cat in the world
nature nature
Observed change in surface temperature from 1901 to 2012 Observed change in surface temperature from 1901 to 2012
World War I timeline World War I timeline
Psychological Dimensions of the Visual World Psychological Dimensions of the Visual World
Video: Lipid absorption - end products & transport mechanism

For a complete list of videos, visit our video library