Abstract | BACKGROUND AND AIMS: METHODS: SUR1-E1506K mutated mice were cross-bred with LDLR-/- mice (SUR1Δ/LDLR-/-), 6 months old mice were fed a western-diet (WD) for 6 months to induce advanced atherosclerotic plaques. At the age of 12 months, atherosclerosis and plaque morphology were analyzed and mRNA gene expression were measured from aortic sections and macrophages. Glucose metabolism was characterized before and after WD. Results were compared to age-matched LDLR-/- mice. RESULTS: Advanced atherosclerotic plaques did not differ in size between the two strains. However, in SUR1Δ/LDLR-/- mice, plaque necrotic area was increased and smooth muscle cell number was reduced, resulting in higher plaque vulnerability index in SUR1Δ/LDLR-/- mice compared to LDLR-/- mice. SUR1Δ/LDLR-/- mice exhibited impaired glucose tolerance and elevated fasting glucose after WD. The positive staining area of IL-1β and NLRP3 inflammasome were increased in aortic sections in SUR1Δ/LDLR-/- mice compared to LDLR-/- mice, and IL-18 plasma level was elevated in SUR1Δ/LDLR-/- mice. Finally, the mRNA expression of IL-1β and IL-18 were increased in SUR1Δ/LDLR-/- bone marrow derived macrophages in comparison to LDLR-/- macrophages in response to LPS. CONCLUSIONS:
|
Authors | Erika Gurzeler, Anna-Kaisa Ruotsalainen, Anssi Laine, Teemu Valkama, Sanna Kettunen, Markku Laakso, Seppo Ylä-Herttuala |
Journal | PloS one
(PLoS One)
Vol. 16
Issue 11
Pg. e0258408
( 2021)
ISSN: 1932-6203 [Electronic] United States |
PMID | 34767557
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
|
Chemical References |
- Abcc8 protein, mouse
- Blood Glucose
- RNA, Messenger
- Receptors, LDL
- Sulfonylurea Receptors
|
Topics |
- Animals
- Aorta
(pathology)
- Aortic Diseases
(blood, etiology, genetics)
- Atherosclerosis
(blood, etiology, genetics)
- Blood Glucose
(metabolism)
- Cells, Cultured
- Diet, Western
(adverse effects)
- Disease Models, Animal
- Gene Expression
- Glucose Intolerance
(genetics)
- Hypercholesterolemia
(blood, etiology, genetics)
- Macrophages
(metabolism)
- Male
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Mutation
- Myocytes, Smooth Muscle
(metabolism)
- Necrosis
- Phenotype
- Plaque, Atherosclerotic
(blood, etiology, genetics)
- RNA, Messenger
(genetics)
- Receptors, LDL
(genetics)
- Sulfonylurea Receptors
(genetics)
|