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REmodelling in Diabetic CardiOmapathy: Gender Response to PDE5i InhibiTOrs (RECOGITO)

This study is currently recruiting participants. (see Contacts and Locations)
Verified July 2014 by University of Roma La Sapienza
Information provided by (Responsible Party):
Andrea M. Isidori, University of Roma La Sapienza Identifier:
First received: February 26, 2013
Last updated: July 7, 2014
Last verified: July 2014
Pathophysiology of diabetic cardiomyopathy (DCM) is yet unclear and gender differences at baseline and a specific treatment have not been indicated. The investigators already demonstrated the positive impact of phosphodiesterase type 5A (PDE5A) inhibition in men. The investigators' study aims to characterize DCM, measuring molecular and neuroendocrine assessment to relate to intramyocardial metabolism and cardiac kinetic. The investigators will perform a randomized, placebo-controlled, double-blind study enrolling 164 diabetic patients (females and males) with DCM, to evaluate gender responses to 6 months of PDE5A inhibitors (PDE5Ai). The investigators' study will describe gender differences in DCM features. The proposed research will test whether PDE5Ai could become a new target for antiremodeling drugs and to discover a molecular pathways affected by this class of drugs and a network of circulating markers for the early diagnosis, monitoring and prediction of response to treatment of DCM.

Condition Intervention Phase
Diabetic Cardiomyopathy
Diabetes Mellitus Type 2
Left Ventricular Hypertrophy
Drug: Tadalafil
Drug: Placebo
Phase 4

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double Blind (Participant, Outcomes Assessor)
Primary Purpose: Treatment
Official Title: Phase IV Study on New Insights in Remodeling of Diabetic Cardiomyopathy: Gender Difference in Intramyocardial, Molecular and Neuroendocrine Assessment in Response to Chronic Inhibition of Cyclic GMP Phosphodiesterase 5A

Resource links provided by NLM:

Further study details as provided by University of Roma La Sapienza:

Primary Outcome Measures:
  • Change from Baseline in Left Ventricular torsion (°) at 3 and 6 months [ Time Frame: 0 , + 3 months, + 6 months ]
    Change of Left ventricular torsion (°) assessed through CMR with tagging before and after treatment to heart failure and gender differences

Secondary Outcome Measures:
  • Change from baseline in longitudinal shortening (Strain %) at 3 and 6 months [ Time Frame: time 0, +3 months, + 6 months ]
    Change of cardiac strain (longitudinal shortening: strain %), and of parameters of cardiac geometry and performance assessed through CMR with tagging before and after treatment and gender differences

  • Change from baseline in Myocardial fibrosis at 3 and 6 months [ Time Frame: time 0, + 3 months, + 6 motnhs ]
    Quantification of Myocardial fibrosis assessed with T1-mapping to establish a new parametersfor the characterization of DCM and treatment efficacy, assessed through CMR before and after treatment and gender differences

  • Change from baseline in Circulating microRNAs at 3 and 6 months [ Time Frame: Time 0, + 3 months, + 6 months ]

    Assessment of circulating microRNAs from plasma and white blood cells (miR208, 499, 1, 133, 29, 223, 222) and correlation of their levels to basal torsion, strain and fibrosis (molecular markers predictors of disease).

    Evaluation of miRNAs before and after treatment and and gender differences

  • Change from baseline in Circulating pro-fibrotic and pro-inflammatory chemokines at 3 and 6 months [ Time Frame: Time 0, + 3 months, + 6 months ]
    Assessment of circulating pro-fibrotic and pro-inflammatory chemokines (MCP-1 and TGF-beta) and correlation to torsion, strain and fibrosis at time 0 and after treatment (markers predictors of disease progression and treatment efficacy) and differences in genders

  • Markers predictor of answer to treatment [ Time Frame: Time 3 and 6 months ]
    Correlation of basal miRNAs and chemokines to cardiac parameters assessed through CMR after treatment (markers predictor of answer to treatment) and differences in genders

  • Therapeutic efficacy markers [ Time Frame: Time 3 and 6 months ]
    Changes of circulating miRNAs from plasma and whit blood cells (miR208, 499, 1, 133, 29, 223, 222), after treatment (therapeutic efficacy measure) and changes in circulating chemokines. These results will be related to changes measured in cardiac torsion, strain, fibrosis and geometry (CMR). Gender differences will be analyzed

  • Risk of progression to heart failure [ Time Frame: Time 3 and 6 months ]
    Stratification of patients in subgroup with respect to kinetic parameters (strain and torsion), cardiac fibrosis, geometry (LV mass and index of concentricity) and performance and metabolic parameters to identify patients at risk of progression to heart failure and differences in genders

Estimated Enrollment: 164
Study Start Date: May 2014
Estimated Study Completion Date: March 2018
Estimated Primary Completion Date: January 2017 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: 1
Tadalafil 5 mg
Drug: Tadalafil
5 mg/die (1 capsule)
Other Name: Cialis 5 mg
Placebo Comparator: 2
Placebo 5 mg
Drug: Placebo
Placebo 5mg/die (1 capsule)

  Show Detailed Description


Ages Eligible for Study:   35 Years to 75 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • age 35-75 years;
  • Diagnosis of Type 2 Diabetes from at least 3 years;
  • HbA1c < 10%;
  • normal blood pressure or controlled hypertension;
  • BMI < 40;

Exclusion Criteria:

  • congenital or valvular cardiomyopathy;
  • ischemic heart disease;
  • endocrine diseases: male hypogonadism, hyperthyroidism, adrenal diseases, pituitary diseases
  • proliferative retinopathy or autonomic neuropathy;
  • contraindications to sildenafil use or CMR imaging;
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01803828

Contact: Andrea M Isidori, MD, PhD 39-06-4997-0540

Dipartimento di Medicina Sperimentale - Sezione di Fisiopatologia Medica - Sapienza Università di Roma Recruiting
Rome, Italy, 00161
Contact: Andrea M Isidori, MD,PhD    39-06-4997-0540   
Principal Investigator: Andrea M Isidori, MD,PhD         
Sub-Investigator: Elisa Giannetta, MD,PhD         
Sponsors and Collaborators
University of Roma La Sapienza
Principal Investigator: Andrea M Isidori, MD, PhD University of Roma La Sapienza
  More Information

Responsible Party: Andrea M. Isidori, Professor, University of Roma La Sapienza Identifier: NCT01803828     History of Changes
Other Study ID Numbers: RECOGITO
Study First Received: February 26, 2013
Last Updated: July 7, 2014

Keywords provided by University of Roma La Sapienza:
Diabetic Cardiomyopathy
Phosphodiesterase 5A inhibitors

Additional relevant MeSH terms:
Diabetes Mellitus
Diabetes Mellitus, Type 2
Hypertrophy, Left Ventricular
Diabetic Cardiomyopathies
Glucose Metabolism Disorders
Metabolic Diseases
Endocrine System Diseases
Heart Diseases
Cardiovascular Diseases
Pathological Conditions, Anatomical
Diabetes Complications
Vasodilator Agents
Phosphodiesterase 5 Inhibitors
Phosphodiesterase Inhibitors
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Urological Agents processed this record on May 22, 2017