Vitamin K to Slow Progression of Dyslipidemia and Diabetes Risk (Vita-K 'n' Kids Study II)

NCT ID: NCT02959762

Last Updated: 2019-11-20

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Clinical Phase

NA

Total Enrollment

30 participants

Study Classification

INTERVENTIONAL

Study Start Date

2016-10-31

Study Completion Date

2020-12-30

Brief Summary

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Animal studies have found that vitamin K-dependent proteins matrix Gla protein and osteocalcin beneficially influence lipid and glucose metabolism, respectively. However, this concept has not been tested in humans at risk for dyslipidemia and diabetes risk. Vitamin K supplementation presents an opportunity to test the hypothesized link between the vitamin K-dependent proteins and markers of lipid and glucose metabolism. The investigators will conduct an 8-week vitamin K intervention (to manipulate carboxylation of matrix Gla protein and osteocalcin) and determine its effects on markers of dyslipidemia and diabetes risk. Sixty obese children will be randomly allocated to either the control group receiving placebo or the low-dose (45 mcg/d) or high-dose group (90 mcg/d) receiving vitamin K (menaquinone-7).

Detailed Description

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Conditions

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Obesity Insulin Resistance Obesity in Diabetes Nutritional and Metabolic Diseases Hyperlipidemia Hyperglycemia Cardiovascular Diseases

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

PREVENTION

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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Placebo-Control

The placebo-control group will take two placebo softgel capsules every day for 8 weeks.

Group Type PLACEBO_COMPARATOR

Placebo-Control

Intervention Type DIETARY_SUPPLEMENT

two placebo softgel capsules per day (for 8 weeks) containing no vitamin K2 (menaquinone-7)

Low-Dose Vitamin K2 (45-mcg/d)

The low-dose vitamin K2 group will take one 45-mcg vitamin K2 softgel capsule and one placebo softgel capsule every day for 8 weeks.

Group Type ACTIVE_COMPARATOR

Low-Dose Vitamin K2 (menaquinone-7; 45-mcg/d)

Intervention Type DIETARY_SUPPLEMENT

one 45-mcg vitamin K2 (menaquinone-7) softgel capsule per day and one placebo softgel per day (containing no menaquinone-7) for 8 weeks

High-Dose Vitamin K2 (90-mcg/d)

The high-dose vitamin K2 group will take two 45-mcg vitamin K2 softgel capsules every day for 8 weeks.

Group Type ACTIVE_COMPARATOR

High-Dose Vitamin K2 (menaquinone-7; 90 mcg/d)

Intervention Type DIETARY_SUPPLEMENT

two 45-mcg vitamin K2 (menaquinone-7) softgel capsules per day for 8 weeks

Interventions

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Placebo-Control

two placebo softgel capsules per day (for 8 weeks) containing no vitamin K2 (menaquinone-7)

Intervention Type DIETARY_SUPPLEMENT

Low-Dose Vitamin K2 (menaquinone-7; 45-mcg/d)

one 45-mcg vitamin K2 (menaquinone-7) softgel capsule per day and one placebo softgel per day (containing no menaquinone-7) for 8 weeks

Intervention Type DIETARY_SUPPLEMENT

High-Dose Vitamin K2 (menaquinone-7; 90 mcg/d)

two 45-mcg vitamin K2 (menaquinone-7) softgel capsules per day for 8 weeks

Intervention Type DIETARY_SUPPLEMENT

Other Intervention Names

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menaquinone-7 menaquinone-7

Eligibility Criteria

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Inclusion Criteria

* Age 8 to 17 years
* Body mass index equal to or greater than 85th percentile for age and sex
* Subject and parent/guardian understands the study protocol and agrees to comply with it
* Informed Consent Form signed by the parent/guardian and assent signed by the subject

Exclusion Criteria

* Subjects using vitamin supplements containing vitamin k
* Subjects with (a history of) metabolic or gastrointestinal diseases including hepatic disorders
* Subjects presenting chronic degenerative and/or inflammatory diseases
* Subjects receiving systemic treatment or topical treatment likely to interfere with evaluation of the study parameters (salicylates, antibiotics)
* Subjects receiving corticosteroid treatment
* Subjects using oral anticoagulants
* Subjects with a history of soy allergy
* Subjects who have participated in a clinical study more recently than one month before the current study
Minimum Eligible Age

8 Years

Maximum Eligible Age

17 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Augusta University

OTHER

Sponsor Role lead

Responsible Party

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Norman Pollock

Associate Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Norman K Pollock, PhD

Role: PRINCIPAL_INVESTIGATOR

Department of Pediatrics, Medical College of Georgia, Augusta University

Locations

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Medical College of Georgia; Augusta University

Augusta, Georgia, United States

Site Status

Countries

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United States

References

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Douthit MK, Fain ME, Nguyen JT, Williams CF, Jasti AH, Gutin B, Pollock NK. Phylloquinone Intake Is Associated with Cardiac Structure and Function in Adolescents. J Nutr. 2017 Oct 1;147(10):1960-1967. doi: 10.3945/jn.117.253666.

Reference Type BACKGROUND
PMID: 28794209 (View on PubMed)

Other Identifiers

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16GRNT31090037

Identifier Type: OTHER_GRANT

Identifier Source: secondary_id

931430

Identifier Type: -

Identifier Source: org_study_id

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