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Effect of Dapagliflozin on Inflammation and Endothelial Function

7. april 2020 opdateret af: Mandeep Bajaj, Baylor College of Medicine

The Effect of Dapagliflozin on Inflammation and Endothelial Function

Sodium-glucose cotransporter 2 (SGLT-2) inhibitors reduce hyperglycemia and improve peripheral insulin sensitivity by ameliorating glucotoxicity. Insulin resistance in type 2 diabetes (T2DM) is associated with endothelial dysfunction and vascular inflammation. Thus strategies to improve insulin sensitivity and lower glucotoxicity may improve endothelial inflammation and vascular inflammation. However, the effects of these agents on vascular inflammation and endothelial function is not known in patients with type 2 diabetes although anti-inflammatory properties have been demonstrated in various animal models. In the present study the investigators will assess if dapagliflozin treatment for 12 weeks decreases monocyte inflammation and improves endothelial function in patients with type 2 diabetes on metformin monotherapy.

Studieoversigt

Status

Afsluttet

Detaljeret beskrivelse

The insulin-resistant state of type 2 diabetes mellitus (T2DM) is largely mediated by inflammatory pathways affecting skeletal muscle which is the primary site of whole body insulin resistance. Nuclear factor kappa B (NFkappaB) regulates pro-inflammatory cytokines which ultimately impair skeletal muscle insulin signaling and fatty acid oxidation; its activity reflects overall inflammatory tone in skeletal muscle. Recent human studies confirm that NFkappaB is elevated in the skeletal muscle of T2DM human subjects. Furthermore, the same inflammatory processes and signaling impairments contribute to worsening endothelial dysfunction, which is an independent predictor for future cardiovascular events in T2DM. In addition, these SGLT-2 Inhibitors reduce body weight, visceral adiposity, systolic and diastolic blood pressure, microalbuminuria, and oxidative stress. However, there are no studies examining the effects of SGLT-2 inhibitor therapy on NFkappaB and other inflammatory mediators in humans with T2DM. Moreover, no studies have examined the effect of SGLT-2 inhibitor therapy on endothelial function in this population. In the present study the investigators will assess whether dapagliflozin treatment for 12 weeks reduces monocyte inflammation and improves endothelial dysfunction in patients with type 2 diabetes on metformin monotherapy.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

17

Fase

  • Fase 4

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

    • Texas
      • Houston, Texas, Forenede Stater, 77030
        • Baylor College of Medicine

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

21 år til 70 år (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  1. Provision of informed consent prior to any study specific procedures
  2. Men and women, ages 21 to 70 years. i) Women of childbearing potential must be using an acceptable method of contraception to avoid pregnancy throughout the study in such a manner that the risk of pregnancy is minimized.

    ii) Women must not be pregnant or breastfeeding.

  3. Patients with Type 2 Diabetes Mellitus with the following parameters at study entry: hemoglobin A1c ranging from 7.0% to 9.0% and a fasting blood glucose less than or equal to 200 mg/dL.
  4. Patients must be on a stable dose of Metformin therapy for 3 months; the dose of metformin will not change for the duration of the study.
  5. Patients are allowed, but not required, to be on statins, Angiotensin Converting Enzyme (ACE) inhibitors, and angiotensin-receptor blockers at doses that have been stable for at least the last 3 months prior to enrollment in the study. Doses will not be changed for the duration of the study.
  6. Patients must have a Body Mass Index between 27-35 kg/m2
  7. Patients must have a stable body weight for three months prior to enrollment in the study.
  8. Patients must have a Creatinine Clearance greater than 60 mL/min (calculated by Cockcroft-Gault formula).
  9. Patients must have Hematocrit greater than or equal to 34%; Serum creatinine less than1.5 mg/dl in men and 1.4 mg/dl in women and Creatinine Clearance greater than 60 ml/min; and serum aspartate aminotransferase (AST) less than 2.5 times upper limit of normal, serum alanine transaminase (ALT) less than 2.5 times upper limit of normal, serum alkaline phosphatase less than 2.5 times upper limit of normal.

Exclusion Criteria:

  1. History of Type 1 diabetes mellitus
  2. Women who are pregnant or breastfeeding
  3. Patients receiving lipid-lowering medications other than statins within the last 3 months.
  4. Patient receiving SGLT-2 inhibitors, incretin therapy, dipeptidyl peptidase 4 (DPP-4) inhibitors, thiazolidinediones, insulin, sulfonylureas, alpha-glucosidase inhibitors, corticosteroids, immunosuppressive therapy, thiazide or loop diuretics, or hormone replacement therapy within the last 3 months .
  5. Patient must stop treatment with nonsteroidal anti-inflammatory drugs (NSAID) and antioxidant vitamin supplements at least one week prior to the start of the study
  6. Patients with diabetic gastroparesis.
  7. Patients with current tobacco use.
  8. Patients with active malignancy.
  9. Patients with history of urinary bladder cancer
  10. Patients with a history of clinically significant heart disease, peripheral vascular disease, or pulmonary disease will not be studied
  11. Subjects with a history of any serious hypersensitivity reaction to dapagliflozin.
  12. Prisoners, or subjects who are involuntarily incarcerated.
  13. Subjects who are compulsorily detained for treatment of either a psychiatric or physical (eg, infectious disease) illness.
  14. Patients with significant cardiac,hepatic or renal disease (Creatinine Clearance less than 60 mL/min calculated by Cockcroft-Gault formula) will be excluded.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Grundvidenskab
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Firedobbelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Dapagliflozin
Dapagliflozin 5 mg daily by mouth for 2 weeks followed by 10 mg by mouth daily for 10 weeks
Patients with Type 2 diabetes will be randomized to receive dapagliflozin 5 mg daily for 2 weeks followed by10 mg daily for 10 weeks by mouth or matching placebo for 12 weeks. All subjects will receive measurements of fasting plasma glucose, Free Fatty Acids, inflammatory markers and adipocytokines, monocyte inflammation, as well as ultrasound assessment of flow-mediated dilatation (FMD) of the brachial artery at baseline and after 12 weeks of drug treatment with either dapagliflozin or placebo.
Andre navne:
  • Farxiga
Placebo komparator: Placebo
Placebo tablets by mouth daily for 12 weeks
Patients with Type 2 diabetes will be randomized to receive dapagliflozin 5 mg daily for 2 weeks followed by10 mg daily for 10 weeks by mouth or matching placebo for 12 weeks. All subjects will receive measurements of fasting plasma glucose, Free Fatty Acids, inflammatory markers and adipocytokines, monocyte inflammation, as well as ultrasound assessment of flow-mediated dilatation (FMD) of the brachial artery at baseline and after 12 weeks of drug treatment with either dapagliflozin or placebo.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Monocyte Inflammatory Protein Nuclear Factor Kappa-B (NFkappaB) (%)
Tidsramme: 12 weeks
The percentage change in monocyte inflammatory proteins NFkappaB (%) from baseline in patients with type 2 diabetes.
12 weeks

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Arterial Flow Mediated Dilatation (%)
Tidsramme: 12 weeks
The percentage change in arterial flow mediated dilation (%) from baseline as measured by ultrasound in patients with type 2 diabetes.
12 weeks

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart

1. november 2015

Primær færdiggørelse (Faktiske)

1. marts 2019

Studieafslutning (Faktiske)

1. marts 2019

Datoer for studieregistrering

Først indsendt

17. november 2015

Først indsendt, der opfyldte QC-kriterier

18. november 2015

Først opslået (Skøn)

20. november 2015

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

8. april 2020

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

7. april 2020

Sidst verificeret

1. april 2020

Mere information

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

Kliniske forsøg med Type 2 diabetes mellitus

Kliniske forsøg med Dapagliflozin

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