Concept explainers
To review:
The diet group having highest LDL (low-density lipoprotein) to HDL (high-density lipoprotein) ratio. The results of the study are shown in the table given below:
Effect of Diet on Lipoprotein levels (mg/dL or milligram per deciliter) | ||||
cis Fatty acids | Trans Fatty acids | Saturated Fats | Optimal level | |
LDL | 103 | 117 | 121 | <100 |
HDL | 55 | 48 | 55 | >40 |
LDL-to-HDL ratio | 1.87 | 2.43 | 2.2 | <2 |
Introduction:
Lipoproteins are made up of proteins and lipids. These molecules help in the transportation of lipids (mainly cholesterol) in the blood or extracellular fluid. The phospholipids are present on the exterior while other lipids lie in the interior. Phospholipids are oriented in such a way that the hydrophilic part is on the outer side while the hydrophobic part is on the inner side.
On basis of density, lipoproteins are classified as Ultra Low-Density Lipoproteins (ULDL), Intermediate Density Lipoproteins (IDL), Very Low-Density Lipoproteins (VLDL), LDL, and HDL. The LDL and HDL are of clinical importance and are classified as bad cholesterol and good cholesterol, respectively.
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Biology: The Dynamic Science (MindTap Course List)
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