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Message definition (High-density lipoprotein ) HDL carries many lipid and protein species, several of which have very low concentrations but are biologically very active. For example, HDL and its protein and lipid constituents help to inhibit [[oxidation]], [[inflammation]], [[Endothelium|activation of the endothelium]], [[coagulation]], and [[Platelet|platelet aggregation]]. All these properties may contribute to the ability of HDL to protect from atherosclerosis, and it is not yet known which are the most important. In addition, a small subfraction of HDL lends protection against the protozoan parasite ''[[Trypanosoma brucei]] brucei''. This HDL subfraction, termed trypanosome lytic factor (TLF), contains specialized proteins that, while very active, are unique to the TLF molecule.
HDLには多くの脂質とタンパク質が含まれており、そのうちのいくつかは濃度は非常に低いが生物学的に非常に活性が高い。例えば、HDLとそのタンパク質および脂質成分は、酸化 、炎症 、内皮の活性化 、凝固 、血小板凝集 を抑制するのに役立つ。これらの特性はすべて、HDLが動脈硬化から保護する能力に寄与していると考えられるが、どれが最も重要であるかはまだ分かっていない。さらに、HDLの小さなサブフラクションは、原虫寄生虫トリパノソーマ・ブルセイ brucei'