What question did this study set out to answer?

This research investigates the JAK-STAT signaling pathway in myocardial tissues from patients with end-stage dilated cardiomyopathy.

February 18, 2003CirculationOpen Access

Alterations in Janus Kinase (JAK)-Signal Transducers and Activators of Transcription (STAT) Signaling in Patients With End-Stage Dilated Cardiomyopathy

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This research investigates the JAK-STAT signaling pathway in myocardial tissues from patients with end-stage dilated cardiomyopathy.
Expression analysis of IL-6-related cytokines and JAK-STAT components in left ventricular myocardia of 10 DCM patients and 5 NF donor hearts.
Immunoblotting to assess differential expression of signaling components.
Immunohistochemistry to evaluate presence of STAT3-positive cardiomyocytes.
IL-6 levels decreased by 59% in DCM patients (P<0.01).
JAK2 phosphorylation reduced by 72% in DCM (P<0.01), indicating impaired signaling activation.
Number of STAT3-positive cardiomyocytes reduced by 42% in DCM (P<0.01).

Structured PICO

Population

Left ventricular myocardia from patients with end-stage dilated cardiomyopathy (n=10) and non-failing donor hearts (n=5)

Comparator

Non-failing donor hearts (n=5)

Outcome

Expression and activation of IL-6-related cytokines, receptors, signal transducers, and signal transduction inhibitorssurrogate

The JAK-STAT signaling pathway is profoundly altered and its downstream activation impaired in the myocardia of patients with end-stage dilated cardiomyopathy.

Discussion

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Implication

Impaired JAK-STAT signaling in end-stage DCM does not yet alter management; hypothesis-generating for pathway-targeted therapies.

Cite This Study

Podewski et al. (2003) studied this question.

synapsesocial.com/papers/6a71486e660549caf2c5ea2c https://doi.org/10.1161/01.cir.0000057545.82749.ff

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Alterations in Janus Kinase (JAK)-Signal Transducers and Activators of Transcription (STAT) Signaling in Patients With End-Stage Dilated Cardiomyopathy

Key Points

Structured PICO

Discussion

Implication

Cite This Study

Alterations in Janus Kinase (JAK)-Signal Transducers and Activators of Transcription (STAT) Signaling in Patients With End-Stage Dilated Cardiomyopathy

Key Points

Structured PICO

Discussion

Implication

Cite This Study

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