What question did this study set out to answer?

The aim is to assess the protective effects of Vitamin D and Catechin against diabetic cardiomyopathy, focusing on cardiac fibrosis.

April 14, 2026Journal of Pharmacy and Pharmacology

Targeting TGF-β1/SMAD pathway and MMP-9 activity: the protective role of Vitamin D and Catechin in diabetic cardiomyopathy

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Why the study?

Does Vitamin D and Catechin improve diabetic cardiomyopathy in a rat model?

Population

50 male Sprague-Dawley rats with type 2 diabetes induced by high-fat diet and streptozotocin

Comparison

Vitamin D and Catechin orally, alone or in… vs Control group and untreated diabetic…

Design

Preclinical

Authors

SESamar R Elnaggar ESEman M. Sweed AAAsmaaG Abdou

Discussion

Member takes

Implication

Vitamin D and Catechin demonstrate cardioprotective effects against diabetic cardiomyopathy in a rat model by targeting the TGF-β1/SMAD pathway and MMP-9 activity.

Key Points

The aim is to assess the protective effects of Vitamin D and Catechin against diabetic cardiomyopathy, focusing on cardiac fibrosis.
Induced type 2 diabetes in male Sprague–Dawley rats using a high-fat diet and streptozotocin.
Divided rats into five groups: control, diabetic, Vitamin D-treated, Catechin-treated, and combination-treated.
Administered Vitamin D (500 IU/kg) and Catechin (400 mg/kg) orally until study completion.
Measured heart function, glucose levels, cardiac injury biomarkers, and oxidative stress markers.
Determined expression levels of TGF-β1 and SMAD2/3/4 mRNA using reverse transcriptase PCR.
Diabetic cardiomyopathy caused significant disturbances in all measured parameters.
Treatment with Vitamin D and Catechin improved heart function and reduced glucose and lipid levels.
Observed reduction in oxidative stress and cardiac fibrosis in treated groups.
Lowered expression of TGF-β1 and SMAD2/3/4 in cardiac tissues was noted.
Decreased MMP-9 activity was associated with treatment.

Structured PICO

Does Vitamin D and Catechin improve diabetic cardiomyopathy in a rat model?

Population

50 male Sprague-Dawley rats with type 2 diabetes induced by high-fat diet and streptozotocin (diabetic cardiomyopathy model)

Intervention

Vitamin D (500 IU/kg) and Catechin (400 mg/kg) orally, alone or in combination

Comparator

Control group and untreated diabetic cardiomyopathy group

Outcome

Cardiac fibrosis, heart function, glucose levels, cardiac injury biomarkers, oxidative stress markers, TGF-β1 and SMAD2/3/4 mRNA expression, and MMP-9 activitysurrogate

Vitamin D and Catechin demonstrate cardioprotective effects against diabetic cardiomyopathy in a rat model by targeting the TGF-β1/SMAD pathway and MMP-9 activity.

Cite This Study

Elnaggar et al. (2026) studied this question.

synapsesocial.com/papers/69ddd9b1e195c95cdefd6fac https://doi.org/10.1093/jpp/rgag031

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Implication

Vitamin D and Catechin demonstrate cardioprotective effects against diabetic cardiomyopathy in a rat model by targeting the TGF-β1/SMAD pathway and MMP-9 activity.

Targeting TGF-β1/SMAD pathway and MMP-9 activity: the protective role of Vitamin D and Catechin in diabetic cardiomyopathy

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Targeting TGF-β1/SMAD pathway and MMP-9 activity: the protective role of Vitamin D and Catechin in diabetic cardiomyopathy

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

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