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CompletedNCT00722631Updated Sep 27, 2012

Anti-Inflammatory Effects of Pioglitazone

An interventional study of Pioglitazone and Glimepiride in Impaired Glucose Tolerance, Type 2 Diabetes Mellitus and Atherosclerosis, sponsored by Kurume University. Completed at 1 site in Japan. Open to participants aged 35 Years to 85 Years. Per ClinicalTrials.gov, last updated 2012-09-27.

Sponsored by Kurume University · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
70
Allocation
Randomized
Ages
35 Years to 85 Years
Sex
All
01

Study summary

There is increasing evidence that inflammation plays a role in progression and destabilization of atherosclerotic plaque. FDG-PET can visualize activated metabolic activity of inflammatory cells. It is possible that FDG-PET can detect atherosclerotic plaque inflammation and that FDG-PET can monitor the effect of pioglitazone on plaque inflammation.

Read the detailed description

Atherosclerotic patients with impaired glucose tolerance and type 2 diabetes will undergo the FDG-PET/CT imaging at baseline and again following 4 months after treatment. Patients who meet eligibility criteria will be titrated up to a maximum of 30 mg/day pioglitazone or 4 mg/day glimepiride. Physical examinations will be done at baseline, 4 months, and 12 months. During study, subjects will have body weight, and vital signs (HR, BP, etc) assessed as well as waist circumference. Laboratory assessments will be done at each baseline, 4 month.

02

Conditions studied

  • Impaired Glucose Tolerance
  • Type 2 Diabetes Mellitus
  • Atherosclerosis
03

In context

Atherosclerosis

1,567 studies on the registry are indexed under Atherosclerosis; 264 are open to participants now.

This study's enrollment of 70 is below the median of 106 across 882 interventional studies indexed under Atherosclerosis.

Browse Atherosclerosis studies →

Lead sponsor

Kurume University is the lead sponsor of 10 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
35 Years to 85 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Subjects between the ages of 35 and 85 years
  • Subjects with impaired glucose tolerance and type 2 diabetes, who had atherosclerosis detected by carotid ultrasound and/or CT
  • Subjects who had vascular FDG uptake by FDG-PET

Exclusion criteria

Exclusion Criteria:

  • Subjects with insulin treatment
  • Subjects with uncontrolled diabetes, hypertension, symptomatic coronary artery disease, symptomatic cerebrovascular disease
  • Subjects taking more than three antidiabetic medications
  • Subjects taking anti-platelet, statins, antidiabetic agents, thiazolidinediones (TZDs) within 8 weeks prior to randomization
  • Subjects with cardiac failure (New York Heart Association Class > III) or left ventricular dysfunction (LVEF \< 40%)
  • Subjects with systemic disorders such as active inflammatory, liver, renal, hematopoietic, and malignant disease
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Single group
Masking
None (open label)
Enrollment
70 participants (actual)

Study arms

  • Experimental
    1

    up to 30 mg pioglitazone, tablet, orally, once daily

    Drug: Pioglitazone

  • Active comparator
    2

    up to 4 mg/day glimepiride, tablet, orally, once daily

    Drug: Glimepiride

Interventions

  • DrugPioglitazone

    Subjects who meet eligibility criteria will be titrated up to a maximum of 30 mg/day pioglitazone.

    Also known as: CAS number: 111025-46-8, ATC code: A10BG03

  • DrugGlimepiride

    Subjects who meet eligibility criteria will be titrated up to a maximum of 4 mg/day glimepiride.

    Also known as: CAS number: 93479-97-1, ATC code: A10BB12

06

What researchers measure

Primary outcomes

  1. Effect of treatment on the nominal change in FDG uptake of atherosclerotic plaque from baseline after 4 months of treatment as measured by FDG-PET/CT imaging.

    Time frame: Baseline and 4 months after treatment

Secondary outcomes

  1. Change from baseline in plasma glucose/insulin homeostatic parameters and circulating markers of atherosclerosis

    Time frame: Baseline and 4 months and 5 years after treatment

  2. Change from baseline in visceral fat

    Time frame: Baseline and 4 months and 5 years after treatment

  3. All cardiovascular events and all cause death for 5 years

    Time frame: Baseline and 4 months and 5 years after treatment

07

Study locations

1 site
  • Kurume University Hospital
    Kurume city, 830-0011, Japan
08

References and documents

Publications

  • Ipsen EO, Madsen KS, Chi Y, Pedersen-Bjergaard U, Richter B, Metzendorf MI, Hemmingsen B. Pioglitazone for prevention or delay of type 2 diabetes mellitus and its associated complications in people at risk for the development of type 2 diabetes mellitus. Cochrane Database Syst Rev. 2020 Nov 19;11(11):CD013516. doi: 10.1002/14651858.CD013516.pub2. PubMed 33210751 ↗
  • Tahara N, Nitta Y, Bekki M, Tahara A, Maeda-Ogata S, Sugiyama Y, Honda A, Igata S, Nakamura T, Sun J, Kurata S, Fujimoto K, Abe T, Matsui T, Yamagishi SI, Fukumoto Y. Two-hour postload plasma glucose and pigment epithelium-derived factor levels are markers of coronary artery inflammation in type 2 diabetic patients. J Nucl Cardiol. 2020 Aug;27(4):1352-1364. doi: 10.1007/s12350-019-01842-5. Epub 2019 Aug 12. PubMed 31407236 ↗
  • Nitta Y, Tahara N, Tahara A, Honda A, Kodama N, Mizoguchi M, Kaida H, Ishibashi M, Hayabuchi N, Ikeda H, Yamagishi S, Imaizumi T. Pioglitazone decreases coronary artery inflammation in impaired glucose tolerance and diabetes mellitus: evaluation by FDG-PET/CT imaging. JACC Cardiovasc Imaging. 2013 Nov;6(11):1172-82. doi: 10.1016/j.jcmg.2013.09.004. PubMed 24229770 ↗
  • Kodama N, Tahara N, Tahara A, Honda A, Nitta Y, Mizoguchi M, Kaida H, Ishibashi M, Abe T, Ikeda H, Narula J, Fukumoto Y, Yamagishi S, Imaizumi T. Effects of pioglitazone on visceral fat metabolic activity in impaired glucose tolerance or type 2 diabetes mellitus. J Clin Endocrinol Metab. 2013 Nov;98(11):4438-45. doi: 10.1210/jc.2013-2920. Epub 2013 Sep 12. PubMed 24030946 ↗
  • Mizoguchi M, Tahara N, Tahara A, Nitta Y, Kodama N, Oba T, Mawatari K, Yasukawa H, Kaida H, Ishibashi M, Hayabuchi N, Harada H, Ikeda H, Yamagishi S, Imaizumi T. Pioglitazone attenuates atherosclerotic plaque inflammation in patients with impaired glucose tolerance or diabetes a prospective, randomized, comparator-controlled study using serial FDG PET/CT imaging study of carotid artery and ascending aorta. JACC Cardiovasc Imaging. 2011 Oct;4(10):1110-8. doi: 10.1016/j.jcmg.2011.08.007. PubMed 21999871 ↗
09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 27, 2012, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT00722631
Lead sponsor
Kurume University
Responsible party
Nobuhiro Tahara (M.D., PhD, Kurume University) — Principal investigator
First posted
Jul 25, 2008
Start date
May 2007
Primary completion
Apr 2009
Completion
Apr 2012
Last update
Sep 27, 2012

Study contacts

Nobuhiro Tahara, MD, PhD
principal investigator · Kurume University

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Sep 2012. You cannot join it, but the record below documents what was studied.

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