Canola and Hydrogenated Soybean Oils Accelerate Ectopic Bone Formation Induced by Implantation of Bone Morphogenetic Protein in Mice

Overview

Journal Toxicol Rep

Date 2017 Oct 1

PMID 28962307

Citations 1

Authors

Yoko Hashimoto

Mayumi Mori

Shuichiro Kobayashi

Akira Hanya

Shin-ichi Watanabe

Naoki Ohara

Toshihide Noguchi

Tatsushi Kawai

Harumi Okuyama

Affiliations

Soon will be listed here.

Abstract

Canola oil (Can) and hydrogenated soybean oil (H2-Soy) are commonly used edible oils. However, in contrast to soybean oil (Soy), they shorten the survival of stroke-prone spontaneously hypertensive (SHRSP) rats. It has been proposed that the adverse effects of these oils on the kidney and testis are caused at least in part by dihydro-vitamin K (VK) 1 in H2-Soy and unidentified component(s) in Can. Increased intake of dihydro-VK1 is associated with decreased tissue VK2 levels and bone mineral density in rats and humans, respectively. The aim of the present study was to determine the effects of these oils on bone morphogenetic protein (BMP)-induced ectopic bone formation, which is promoted by VK2 deficiency, in relation to the role of VK in the γ-carboxylation of osteocalcin and matrix Gla protein. A crude extract of BMPs was implanted into a gap in the fascia of the femoral muscle in 5-week-old mice maintained on a Soy, Can, or H2-Soy diet. Newly formed bone volume, assessed by three-dimensional X-ray micro-computed tomography and three-dimensional reconstruction imaging for bone, was 4-fold greater in the Can and H2-Soy groups than in the Soy group. The plasma carboxylated osteocalcin (Gla-OC) and total OC (Gla-OC plus undercarboxylated osteocalcin [Glu-OC]) levels were significantly lower in the Can group than in the Soy group ( < 0.05). However, these levels did not significantly differ between the H2-Soy and Soy groups. The plasma Gla-OC/Glu-OC ratio in the Can and H2-Soy groups was significantly lower (in Can; = 0.044) or was almost significantly lower (in H2-Soy; = 0.053) than that in the Soy group. In conclusion, Can and H2-Soy accelerated BMP-induced bone formation in mice to a greater extent than Soy. Further research is required to evaluate whether the difference in accelerated ectopic bone formation is associated with altered levels of VK2 and VK-dependent protein(s) among the three dietary groups.

Citing Articles

Fully hydrogenated canola oil extends lifespan in stroke-prone spontaneously hypertensive rats.

Tatematsu K, Miyazawa D, Saito Y, Okuyama H, Ohara N Lipids Health Dis. 2021; 20(1):102.

PMID: 34511125 PMC: 8436556. DOI: 10.1186/s12944-021-01540-7.

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