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The symptoms of CmRD are similar to the physical symptoms of malnutrition, as the disease arises due to the poor absorption of lipids and fat-soluble nutrients such as vitamin E. For this reason, the disease is likely to be underdiagnosed by physicians. Fat-soluble nutrients are essential for growth, development, and normal bodily function.
This leads to a multiple vitamin deficiency, affecting the fat-soluble vitamin A, vitamin D, vitamin E, and vitamin K. [11] However, many of the observed effects are due to vitamin E deficiency in particular. [11] Acanthocytosis in a patient with abetalipoproteinemia. Signs and symptoms vary and present differently from person to person.
Because vitamin D is fat-soluble, it is hypothesized that absorption would be improved if patients are instructed to take their supplement with a meal. Raimundo et al. [73] [74] performed different studies confirming that a high-fat meal increased the absorption of vitamin D3 as measured by serum 25(OH) D. A clinical report indicated that serum ...
Chylomicron structure ApoA, ApoB, ApoC, ApoE (apolipoproteins); T (triacylglycerol); C (cholesterol); green (phospholipids). Chylomicrons transport lipids absorbed from the intestine to adipose, cardiac, and skeletal muscle tissue, where their triglyceride components are hydrolyzed by the activity of the lipoprotein lipase, allowing the released free fatty acids to be absorbed by the tissues.
Abetalipoproteinemia is a rare inherited disorder of fat metabolism that results in poor absorption of dietary fat and vitamin E. [9] The vitamin E deficiency associated with this disease causes problems such as poor transmission of nerve impulses and muscle weakness.
[10] [11] In this setting, microcytic anaemia usually implies iron deficiency and macrocytosis can be caused by impaired folic acid or B12 absorption or both. Low cholesterol or triglyceride may give a clue toward fat malabsorption. [12] Low calcium and phosphate may give a clue toward osteomalacia from low vitamin D. [12]
Vitamin D is a group of structurally related, fat-soluble compounds responsible for increasing intestinal absorption of calcium, magnesium, and phosphate, along with numerous other biological functions. [1] [2] In humans, the most important compounds within this group are vitamin D 3 (cholecalciferol) and vitamin D 2 (ergocalciferol). [2] [3]
Rare, occurring as a consequence of abnormalities in dietary fat absorption or metabolism, such as a defect in the alpha-tocopherol transport protein, rather than from a diet low in vitamin E. Vitamin K deficiency: Signs and symptoms can include sensitivity to bruising, bleeding gums, nosebleeds, and heavy menstrual bleeding in women. [50] [51]