A Delphinidin-Enriched Maqui Berry Extract Improves Bone Metabolism and Protects against Bone Loss in Osteopenic Mouse Models

Nagaoka, Masahiro; Maeda, Toyonobu; Chatani, Masahiro; Handa, Kazuaki; Yamakawa, Tomoyuki; Kiyohara, Shuichi; Negishi-Koga, Takako; Kato, Yasumasa; Takami, Masamichi; Niida, Shumpei; Lang, Stefanie C.; Kruger, Marlena C.; Suzuki, Keiko

doi:10.3390/antiox8090386

Submit to this Journal Review for this Journal Edit a Special Issue

Article Menu

...

Open AccessArticle

A Delphinidin-Enriched Maqui Berry Extract Improves Bone Metabolism and Protects against Bone Loss in Osteopenic Mouse Models

¹,

²,

³,

³,

³,

³,

³,

³,

⁴,

⁵,

⁶

and

Keiko Suzuki

^1,*,†

Department of Pharmacology, School of Dentistry, Ohu University, Fukushima 963-8611, Japan

Department of Oral Function and Molecular Biology, School of Dentistry, Ohu University, Fukushima 963-8611, Japan

Department of Pharmacology, School of Dentistry, Showa University, Tokyo 142-8551, Japan

⁴

Medical Genome Center, National Center for Geriatrics and Gerontology (NCGG), Aichi 474-8511, Japan

⁵

Anklam Extrakt GmbH, Marienbergstr. 92, 90411 Nuremberg, Germany

⁶

School of Health Sciences, College of Health, Massey University, Palmerston North 4442, New Zealand

Author to whom correspondence should be addressed.

^†

Present Affiliation: Department of Pharmacology, School of Dentistry, Showa University, Tokyo 142-8555, Japan.

Antioxidants 2019, 8(9), 386; https://doi.org/10.3390/antiox8090386

Received: 31 July 2019 / Revised: 2 September 2019 / Accepted: 7 September 2019 / Published: 10 September 2019

(This article belongs to the Special Issue Natural Products in Health Promotion and Disease Prevention)

View Full-Text Download PDF

Browse Figures

Citation Export

Abstract

In our previous investigation, delphinidin, one of the most abundant anthocyanins found in vegetables and berry fruits, had been shown to inhibit osteoclasts and prevent bone loss in mouse models of osteoporosis. In the present study, we investigated whether a delphinidin glycoside-enriched maqui berry extract (MBE, Delphinol^®) exhibits beneficial effects on bone metabolism both in vitro and in vivo. MBE stimulated the osteoblastic differentiation of MC3T3-E1 cells, as indicated by enhanced mineralized nodule formation, and increased alkaline phosphatase activity, through the upregulation of bone morphogenetic protein 2 (Bmp2), runt-related transcription factor 2 (Runx2), Osterix (Osx), osteocalcin (Ocn), and matrix extracellular phosphoglycoprotein (Mepe) mRNA expression. Immunostaining and immunoprecipitation assays demonstrated that MBE suppressed NF-κB transnucleation through acting as a superoxide anion/peroxynitrite scavenger in MC3T3-E1 cells. Simultaneously, MBE inhibited both osteoclastogenesis in primary bone marrow macrophages and pit formation by maturated osteoclasts on dentine slices. Microcomputed tomography (micro-CT) and bone histomorphometry analyses of femurs demonstrated that the daily ingestion of MBE significantly increased BV/TV (ratio of bone volume to tissue volume), Tb.Th (trabecular thickness), Tb.N (trabecular number), N.Nd/N.Tm (node to terminus ratio), OV/TV (ratio of osteoid volume to tissue volume), BFR/TV (bone formation rate per tissue volume), and significantly decreased Tb.Sp (trabecular separation), ES/BS (ratio of eroded surface to bone surface) and N.Oc/BS (number of osteoclast per unit of bone surface), compared to vehicle controls in osteopenic mouse models. These findings suggest that MBE can be a promising natural agent for the prevention of bone loss in osteopenic conditions by not only inhibiting bone resorption, but also stimulating bone formation. View Full-Text

Keywords: maqui berry; delphinidin; anthocyanin; oxidative stress; antioxidant; osteoblast; osteoclast; NF-κB; osteopenic mouse

▼ Show Figures

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Share and Cite

MDPI and ACS Style

Nagaoka, M.; Maeda, T.; Chatani, M.; Handa, K.; Yamakawa, T.; Kiyohara, S.; Negishi-Koga, T.; Kato, Y.; Takami, M.; Niida, S.; Lang, S.C.; Kruger, M.C.; Suzuki, K. A Delphinidin-Enriched Maqui Berry Extract Improves Bone Metabolism and Protects against Bone Loss in Osteopenic Mouse Models. Antioxidants 2019, 8, 386. https://doi.org/10.3390/antiox8090386

AMA Style

Nagaoka M, Maeda T, Chatani M, Handa K, Yamakawa T, Kiyohara S, Negishi-Koga T, Kato Y, Takami M, Niida S, Lang SC, Kruger MC, Suzuki K. A Delphinidin-Enriched Maqui Berry Extract Improves Bone Metabolism and Protects against Bone Loss in Osteopenic Mouse Models. Antioxidants. 2019; 8(9):386. https://doi.org/10.3390/antiox8090386

Chicago/Turabian Style

Nagaoka, Masahiro, Toyonobu Maeda, Masahiro Chatani, Kazuaki Handa, Tomoyuki Yamakawa, Shuichi Kiyohara, Takako Negishi-Koga, Yasumasa Kato, Masamichi Takami, Shumpei Niida, Stefanie C. Lang, Marlena C. Kruger, and Keiko Suzuki. 2019. "A Delphinidin-Enriched Maqui Berry Extract Improves Bone Metabolism and Protects against Bone Loss in Osteopenic Mouse Models" Antioxidants 8, no. 9: 386. https://doi.org/10.3390/antiox8090386

Find Other Styles

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Metrics

Abstract views Pdf views Html views

Article Menu

A Delphinidin-Enriched Maqui Berry Extract Improves Bone Metabolism and Protects against Bone Loss in Osteopenic Mouse Models

Abstract

Share and Cite

Article Metrics

Article Access Statistics

Article Access Map by Country/Region

Further Information

Guidelines

MDPI Initiatives

Follow MDPI