Describe sideroblastic anemia.
What will be an ideal response?
Sideroblastic anemia is a form of anemia characterized by the appearance of sideroblasts, immature ferritin-containing blast marrow cells in circulation. Sideroblastic anemia presents clinically as iron overload due to adjustments for poor oxygenation. Iron absorption and RBC production are increased to compensate for ineffective oxygen transport. There are presently eight characterized forms of sideroblastic anemia identified by the genetic mutation that is present, and all have characteristic mitochondrial iron overloading.
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In the United States, food insecurity is caused by the lack of enough food produced to feed all
the people who live in poverty. Indicate whether the statement is true or false
Popular low-carbohydrate diets may place an extra burden on:
a. the heart. b. the kidneys. c. muscles. d. the pancreas.
Why are people with iron overload at increased risk for infections?
a. Excess tissue iron destroys vitamin C b. Iron-rich blood favors growth of bacteria c. Iron-rich blood impairs the immune system d. Excess tissue iron interferes with antibiotic function e. Iron binds with cells that produce T- and NK-cells, decreasing their production.
The DRI values are established for
A. infants and children and physical activity levels. B. males and females, infants and children, and physical activity levels. C. different age groups and physiologic conditions (pregnancy, lactation). D. males and females, different age groups, and physiologic conditions (pregnancy, lactation).