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Completed

NCT Number: NCT02531334

Effects of TA-65, a Telomerase Activator on Metabolic Syndrome

This study is being conducted to evaluate the efficacy of TA-65, a purified extract of Astragalus root, on insulin resistance, oxidative stress, and inflammation in individuals classified with metabolic syndrome.

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Key information

Age range

32 year–70 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

University of Connecticut

Storrs, Connecticut, 06269, United States

About this study

Short telomeres are strongly linked to increased risk of cardiovascular disease and diabetes, indications where tissue aging and senescence play significant roles. Shorter leukocyte telomere length has been linked to impaired glucose tolerance, Type 2 Diabetes, and coronary heart disease. Telomere length and telomerase activity have been shown to be significantly lower in CAD patients. Telomere length may play an important role in predicting cardiovascular disease and diabetes. TA-65 may not only ameliorate the symptoms associated with these disease states, but be a preventive measure as well.

In this study, the researchers will investigate whether telomerase activator (TA)-65 can also improve the metabolic dysregulations associated with metabolic syndrome including oxidative stress, inflammation, high blood pressure and dyslipidemias.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Age 32 to 70 years
  • Men and women
  • Proficiency in English
  • Postmenopausal women, or women of childbearing age (premenopausal) must be using some form of contraception or have had a hysterectomy
  • Classification of metabolic syndrome according to the Adult treatment panel (ATP) III criteria, meaning that individuals have 3 or more of the following characteristics:
  • Waist circumference >102 cm for men or > 88 cm for women
  • Triglycerides > 150 mg/d L
  • HDL cholesterol < 40 mg/dL for men or < 50 mg/dL for women
  • Blood pressure > 130/85 mm Hg or systolic ≥ 130 or diastolic ≥ 85*
  • Fasting blood glucose > 100 mg/dL *Or taking blood pressure medications

Exclusion criteria

  • Participants who do not fulfill the classification of metabolic syndrome, which means that they do not have 3 or more of the 5 characteristics previously mentioned
  • Participants with a body mass index (BMI) > 40 kg/m2
  • Current or past diagnosis of liver disease, renal disease, diabetes, cancer, stroke, heart disease, severe infectious disease, or autoimmune diseases (including but not limited to multiple sclerosis, lupus, and rheumatoid arthritis)
  • Women who are pregnant, lactating, or planning to become pregnant
  • Use of any glucose-lowering prescriptions or supplements, such as Sulfonylureas (Glucotrol, Amaryl, chlorpropamide, gliclazide, glimepiride, glipizide, glyburide), Thiazolidinediones (Avandia, ACTOS, rosiglitazone, pioglitazone), Meglitinides (Prandin, Starlix), Biguanides (Metformin), Alpha-glucosidase inhibitors (Precose, Glyset, acarbose, miglitol), Dipeptidyl peptidase (DPP)-4 inhibitors (Januvia, Onglyza, alogliptin, linagliptin, saxagliptin, sitagliptin), Glucagon-like peptide (GLP-1) antagonists (exenatide, liraglutide), Meglitinides (nateglinide, repaglinide), sodium glucose cotransporter (SGLT)-2 inhibitors (canagliflozin) or high dose chromium or cinnamon supplements
  • Use of immunosuppressants, including azathioprine, cyclophosphamide, basiliximab, cyclosporine, everolimus, daclizumab, infliximab, mercaptopurine, methotrexate, muromonab-cluster of differentiation3 (CD3), mycophenolate, pimecrolimus, rituximab, tacrolimus, sirolimus, prednisone, methylprednisone, dexamethasone, hydrocortisone (not topical), or prednisolone
  • Use of anticoagulants, including factor Xa inhibitors (rivaroxaban, apixaban), thrombin inhibitor (dabigatran), vitamin K antagonist (warfarin), heparin, low-molecular weight heparin, fondaparinux, or antiplatelets (aspirin, cilostazol, clopidogrel, dipyridamole, prasugrel, ticagrelor, ticlopidine)
  • Use of other categories of drugs, including methadone, Suboxone, monoamine oxidase (MAO) inhibitors, or lithium.
  • Use of any combination drug product containing any of the individual drugs listed above
  • Participants who have been consistently taking vitamin, mineral, or multivitamin supplements prior to recruitment may be admitted into the study if they plan to maintain their current supplement program. However, subjects may not participate if they begin taking a new supplement during the 27-week study period.
  • Fasting plasma triglycerides ≥ 500 mg/dL, glucose ≥ 126 mg/dL, or blood pressure > 145/100 mm Hg or systolic > 145 mm Hg or diastolic > 100 mm Hg

Treatment and study plan

TA-65

Dietary Supplement

2 pills of TA-65 or placebo daily for 12 weeks. Subjects will be monitored weekly for side effects and every 4 weeks for compliance and safety monitoring. The whole intervention is a randomized double blind study for a duration of 27 weeks; 12 weeks for TA-65 or placebo allocated randomly and after a 3 week washout period, allocation to the alternate supplement TA-65 or placebo.

Primary outcomes

  1. Plasma insulin

    Time frame: 27 weeks

    The supplement is expected to decrease insulin resistance in metabolic syndrome patients

Secondary outcomes

  1. Plasma HDL cholesterol

    Time frame: 27 weeks

    The supplement is expected to increase plasma HDL cholesterol

Other outcomes

  1. Blood pressure

    Time frame: 27 weeks

    The supplement is expected to decrease blood pressure

Sponsors and collaborators

Lead sponsor

University of Connecticut

Other

Registry information

Important dates

Study start
2015
Primary completion
2017
Study completion
2018
First posted
Aug 24, 2015
Registry last updated
Oct 10, 2018

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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