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Bone health nutraceuticals alter microarray mRNA gene expression: A randomized, parallel, open-label clinical study

Yumei Lin1, Valentina Kazlova2, Shyam Ramakrishnan3

  • 1Nutrilite Health Institute, Amway R&D, 5600 Beach Boulevard, Buena Park, CA 90622, United States; Yumei Consulting, Inc., P.O. Box 821, Huntington Beach, CA 92648, United States.

Phytomedicine : International Journal of Phytotherapy and Phytopharmacology
|February 24, 2016
PubMed
Abstract

Insights

Plant extracts from pomegranate, grape seed, quercetin, and licorice modulated genes involved in bone health. This study identified effects on bone resorption and formation pathways in post-menopausal women.

Area of Science:

  • Nutrigenomics
  • Bone Biology
  • Pharmacology

Background:

  • Dietary polyphenols from fruits and vegetables may promote bone health.
  • Polyphenols are linked to bone mineral density and metabolism.
  • Gene expression analysis can reveal mechanisms of action for plant extracts.

Purpose of the Study:

  • To investigate the effects of plant extracts on gene expression related to bone health.
  • To identify differentially expressed genes in post-menopausal women treated with specific plant extract combinations.

Main Methods:

  • A 28-day open-label study involving healthy post-menopausal women.
  • Randomization into three groups receiving anti-resorptive (AR), bone formation (BF), or combined (AR+BF) plant extracts.
  • Standard microarray analysis of peripheral whole blood samples before and after treatment.

Main Results:

  • The AR combination down-regulated genes for bone resorption (e.g., CTSG, TACR1) and up-regulated extracellular matrix formation genes (e.g., HSPG2, HYAL1).
  • The BF combination up-regulated bone formation genes (e.g., BMP-2, COL1A1) and down-regulated osteoclastogenesis genes.
  • The combined extract showed distinct gene expression patterns, suggesting complex regulatory feedback.

Conclusions:

  • Pomegranate, grape seed, quercetin, and licorice extracts modulate gene expression in both osteoclastic and osteogenic processes.
  • These findings provide insight into the molecular mechanisms by which plant-derived polyphenols may influence bone metabolism.
  • Further research can explore the therapeutic potential of these extracts for bone health.
Keywords:
Bone morphogenetic protein 2Botanical extractsMicroarray analysisReceptor activator of nuclear factor kappa-B ligand

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