What question did this study set out to answer?

To determine how specific extracellular matrix collagen subtypes influence cardiac fibroblast proliferation and myofibroblast differentiation during post-myocardial infarction remodeling.

September 3, 2005AJP Heart and Circulatory Physiology

Type VI collagen induces cardiac myofibroblast differentiation: implications for postinfarction remodeling

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Why the study?

Does type VI collagen induce cardiac myofibroblast differentiation compared to types I and III collagen?

Population

Isolated cardiac fibroblasts and an in vivo model of myocardial infarction

Comparison

Exposure to type VI collagen substrate vs Exposure to type I and III collagen substrates…

Design

Preclinical

Follow-up

20 weeks post-MI (in vivo model)

Authors

JNJennifer E. NaugleUnited States Department of Justice EOErik R. OlsonImmusoft (United States)XZXiaojin ZhangNantong University

Discussion

Member takes

Implication

Type VI collagen may drive postinfarction fibroblast responses; hypothesis-generating for targeted remodeling therapies pending human validation.

Key Points

To determine how specific extracellular matrix collagen subtypes influence cardiac fibroblast proliferation and myofibroblast differentiation during post-myocardial infarction remodeling.
Plated isolated cardiac fibroblasts on type I, III, or VI collagen substrates with or without angiotensin II to measure proliferation, myofibroblast differentiation, and ERK1/2 activation.
Evaluated type VI collagen expression alongside myofibroblast differentiation in an in vivo rat myocardial infarction model 20 weeks post-infarct.
Type VI collagen substrate potently promoted myofibroblast differentiation without stimulating proliferation, whereas type I and III collagens induced proliferation (type I: 240.7 ± 10.3%; type III: 271.7 ± 21.8% of basal) without triggering differentiation.
Type I collagen activated ERK1/2 signaling while type III did not, and angiotensin II boosted proliferation on type I and III collagens but had no effect on type VI collagen.
Myocardial tissue displayed concurrent elevations in both type VI collagen and myofibroblast content at 20 weeks post-myocardial infarction.

Structured PICO

Does type VI collagen induce cardiac myofibroblast differentiation compared to types I and III collagen?

Population

Isolated cardiac fibroblasts and an in vivo model of myocardial infarction

Intervention

Exposure to type VI collagen substrate

Comparator

Exposure to type I and III collagen substrates or basal conditions

Outcome

Cardiac fibroblast proliferation and myofibroblast differentiationsurrogate

Type VI collagen facilitates myofibroblast differentiation, playing a potentially novel role in postinfarction cardiac remodeling, while types I and III stimulate proliferation.

Cite This Study

Naugle et al. (2005) studied this question.

synapsesocial.com/papers/69d72afccd480cb7e5f50efd https://doi.org/10.1152/ajpheart.00321.2005

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Implication

Type VI collagen may drive postinfarction fibroblast responses; hypothesis-generating for targeted remodeling therapies pending human validation.

Type VI collagen induces cardiac myofibroblast differentiation: implications for postinfarction remodeling

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Type VI collagen induces cardiac myofibroblast differentiation: implications for postinfarction remodeling

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Also Consider

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