Two patients presented with significant atherosclerosis. One had significant comorbid diabetes and the other is non-diabetic. The incidence of which of the following is increased 100 times in the patients having diabetes, when both are compared?
**Core Concept**
Atherosclerosis is a chronic inflammatory disease characterized by the buildup of lipid-rich plaques in the arterial wall. Diabetes mellitus, especially type 2, is a well-established risk factor for atherosclerosis due to chronic hyperglycemia-induced oxidative stress, inflammation, and endothelial dysfunction.
**Why the Correct Answer is Right**
Diabetes mellitus significantly accelerates atherosclerosis through several mechanisms:
* Increased advanced glycosylation end-products (AGEs) formation, leading to oxidative stress and inflammation.
* Enhanced expression of pro-inflammatory cytokines, such as tumor necrosis factor-alpha (TNF-alpha) and interleukin-6 (IL-6).
* Impaired nitric oxide (NO) production and bioavailability, contributing to endothelial dysfunction.
* Increased expression of vascular endothelial growth factor (VEGF) and platelet-derived growth factor (PDGF), promoting neointimal formation.
**Why Each Wrong Option is Incorrect**
**Option A:** Not directly related to diabetes-induced atherosclerosis acceleration.
**Option B:** While inflammation is increased in diabetes, this option is not specific to atherosclerosis.
**Option C:** Not a direct consequence of diabetes on atherosclerosis.
**Clinical Pearl / High-Yield Fact**
Diabetes mellitus increases the risk of atherosclerotic cardiovascular disease (ASCVD) by 2- to 4-fold, with significant implications for cardiovascular risk stratification and management.
**Correct Answer:** C. Increased expression of vascular endothelial growth factor (VEGF) and platelet-derived growth factor (PDGF), promoting neointimal formation.