Clinical trial NCT02531334: Effects of TA-65, a Telomerase Activator on Metabolic Syndrome
Official title: Effects of TA-65, a Telomerase Activator on Metabolic Syndrome
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Metabolic Syndrome X
Lead sponsor: University of Connecticut
Sponsor class: OTHER
First posted: 2015-08-24
Enrollment: 40
Sex: ALL
Minimum age (years): 32
Maximum age (years): 70
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: CROSSOVER
Primary purpose: TREATMENT

Brief summary: 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.

Detailed description: 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.

Eligibility criteria: Inclusion Criteria:

1. Age 32 to 70 years
2. Men and women
3. Proficiency in English
4. Postmenopausal women, or women of childbearing age (premenopausal) must be using some form of contraception or have had a hysterectomy
5. 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:

1. 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
2. Participants with a body mass index (BMI) \> 40 kg/m2
3. 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)
4. Women who are pregnant, lactating, or planning to become pregnant
5. 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
6. 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
7. 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)
8. Use of other categories of drugs, including methadone, Suboxone, monoamine oxidase (MAO) inhibitors, or lithium.
9. Use of any combination drug product containing any of the individual drugs listed above
10. 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.
11. 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

Primary outcomes:
measure: Plasma insulin
timeFrame: 27 weeks
Secondary outcomes:
measure: Plasma HDL cholesterol
timeFrame: 27 weeks
Other outcomes:
measure: Blood pressure
timeFrame: 27 weeks
Locations:
city: Storrs
country: United States
facility: University of Connecticut
state: Connecticut
Study officials:
affiliation: University of Connecticut
name: Maria Luz Fernandez, PhD
role: PRINCIPAL_INVESTIGATOR
References:
citation: Maubaret CG, Salpea KD, Jain A, Cooper JA, Hamsten A, Sanders J, Montgomery H, Neil A, Nair D, Humphries SE; HIFMECH consortium, Simon Broome Research Group. Telomeres are shorter in myocardial infarction patients compared to healthy subjects: correlation with environmental risk factors. J Mol Med (Berl). 2010 Aug;88(8):785-94. doi: 10.1007/s00109-010-0624-3. Epub 2010 Apr 11.