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Spermidine Anti-Hypertension Study

Spermidine Anti-Hypertension Study

Status
UNKNOWN
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04405388
Acronym
SMARTEST
Enrollment
46
Registered
2020-05-28
Start date
2020-02-25
Completion date
2024-11-15
Last updated
2023-01-10

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Hypertension

Brief summary

The impact of daily spermidine application on arterial blood pressure and other secondary parameters will be evaluated in a double-blind single center 46 patients cross-over study.

Detailed description

Arterial hypertension is a central risk factor for cardiovascular disease, major cardiovascular events and mortality. Treatment of arterial hypertension necessitates lifestyle modifications, but often also requires medical intervention. In most cases, a combination of two or more anti-hypertensive drugs is recommended and necessary for reaching the target blood pressure levels. Hypotheses / research questions/objectives Spermidine potentiates the blood pressure lowering effect of standard anti-hypertensive medications, particularly when a combination of at least two first-line drugs (as recommended by the European Society of Cardiology guidelines) has not resulted in sufficient and adequate blood pressure control. Approach/methods Spermidine Anti-Hypertension Study (SMARTEST) is a prospective, randomized and double-blind placebo-controlled single-centre trial with a balanced 2x2 crossover design, where 46 medically pre-treated hypertensive patients will be subsequently treated with spermidine and placebo (each for eight weeks) in two arms of opposite treatment sequence. A washout period of four weeks will separate the two intervention periods in both arms. Patients will undergo physical examination, ECG (electrocardiogram), echocardiography, and blood draws at four time points coinciding with the baseline and termination of each treatment at: 0, 8, 12, and 20 weeks of/after recruitment at the Department of Cardiology, Medical University of Graz. In addition, 24-hour ambulatory blood pressure (24-h BP) monitoring (BPM; Mobil-O-Graph®) and on-site blood pressure will be obtained (the device will be sent back to the hospital the following day) at these time points. A 6-minute walk test (6MWT) will be performed at every visit. Spermidine will be administered orally as an approved dietary supplement (spermidine-rich wheat germ extract) at a dose of 4 mg spermidine per day for eight weeks. The primary outcome will be arterial systolic blood pressure at 24h BPM. Further secondary outcomes/safety outcomes will be: 24-h BP: analysis of systolic, diastolic and mean arterial blood pressures and pulse wave analysis; on site ambulatory blood pressure; 6 minute walk test distance (difference in meters); laboratory analysis; ECG - standard parameters; Echocardiography: standard parameters as well as strain analysis

Interventions

DRUGPlacebo

Placebo will be given orally as capsule (same size and weight as Spermidine capula)

Spermidine will be given orally as capsule (4mg/day)

Sponsors

University of Graz
CollaboratorOTHER
ETH Zurich
CollaboratorOTHER
Institut National de la Santé Et de la Recherche Médicale, France
CollaboratorOTHER_GOV
University Hospital Tuebingen
CollaboratorOTHER
Medical University of Graz
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
ALL
Age
19 Years to 99 Years
Healthy volunteers
No

Inclusion criteria

* Able to provide signed and dated informed consent form * Persistant arterial hypertension with systolic blood pressure above 150 mmHg during hospitalisation and the day of randomisation * Stable anti-hypertensive medication with at least two guideline-recommended anti-hypertensive drugs

Exclusion criteria

* Systolic blood pressure ≥180mmHg on the day of randomisation * Spermidine intolerance * Significant renal impairment defined as glomerular filtration rate \< 45ml/min * Insulin-dependent diabetes mellitus (IDDM) * Wheat allergy or gluten intolerance * Life expectancy of less than 12 months * Participation in another clinical trial

Design outcomes

Primary

MeasureTime frameDescription
Systolic blood pressure in an ambulatory 24h blood pressure measurementup to 24 weeksPatients will get RR recordings in an ambulatory setting

Secondary

MeasureTime frameDescription
Pulse wave velocityup to 24 weeksrecorded with the Mobil-O-Graph® PWA, I.E.M. GmbH, Stolberg, Germany
diastolic blood pressureup to 24 weeksrecorded with the Mobil-O-Graph® PWA, I.E.M. GmbH, Stolberg, Germany
mean blood pressureup to 24 weeksrecorded with the Mobil-O-Graph® PWA, I.E.M. GmbH, Stolberg, Germany
central blood pressureup to 24 weeksrecorded with the Mobil-O-Graph® PWA, I.E.M. GmbH, Stolberg, Germany
6 minute walk testup to 24 weekstested at every visit

Countries

Austria

Contacts

Primary ContactDirk von Lewinski, MD
dirk.von-lewinski@medunigraz.at+43 316 385
Backup ContactMarkus Wallner, MD
markus.wallner@medunigraz.at+43 316 385

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026