Even though the mice had fatty plaques and they burst, their blood fat levels didn’t change — meaning the rupture wasn’t caused by worse cholesterol, but by something else, like immune activity.
Scientific Claim
In apolipoprotein E-knockout mice, short-term combination stimulation does not alter serum levels of total cholesterol, triglycerides, LDL, or HDL at 6 or 14 weeks, indicating that plaque rupture in this model is independent of systemic lipid changes.
Original Statement
“However, the control and treatment groups did not differ with respect to the serum lipid levels at 6 or 14 weeks (Table 1).”
Evidence Quality Assessment
Claim Status
appropriately stated
Study Design Support
Design supports claim
Appropriate Language Strength
association
Can only show association/correlation
Assessment Explanation
The study reports null findings with precise data and statistical analysis. The conclusion that lipid levels are unchanged is appropriately stated and supports the study’s focus on immune mechanisms.
Evidence from Studies
Supporting (1)
Even though the mice didn’t have higher cholesterol or fat levels in their blood, they still got dangerous plaque bursts — and that was caused by immune system activity, not fats.