ArticleInternational journal of medical sciences2021
Self-emulsified annatto tocotrienol improves bone histomorphometric parameters in a rat model of oestrogen deficiency through suppression of skeletal sclerostin level and RANKL/OPG ratio.
Article in International journal of medical sciences, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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14 citing papers in PubMed, 22 citations in OpenAlex.
- Antioxidant, Anti-Inflammatory, and Bone-Remodeling Modulatory Activities of Thai Pigmented and Non-Pigmented Rice Bran Oils Containing Tocols and γ-Oryzanol.Antioxidants (Basel, Switzerland) · 2026Article
- Modulation of tocotrienol's bone effects by osteocytes: a perspective.Frontiers in pharmacology · 2026Article
- Role of vitamins in the development and treatment of osteoporosis (Review).International journal of molecular medicine · 2025Review
- Beyond Bone Loss: A Biology Perspective on Osteoporosis Pathogenesis, Multi-Omics Approaches, and Interconnected Mechanisms.Biomedicines · 2025Review
- Palm Tocotrienol Preserves Trabecular Osteocyte Indices and Modulates the Expression of Osteocyte Markers in Ovariectomized Rats.Biomedicines · 2025Article
- Vitamin E Improves Cellular and Structural Bone Histomorphometry in an Alcohol-Induced Osteoporosis Rat Model.Pharmaceuticals (Basel, Switzerland) · 2024Article
- Updates in the skeletal and joint protective effects of tocotrienol: a mini review.Frontiers in endocrinology · 2024Review
- Role of vitamins beyond vitamin DInternational journal of molecular medicine · 2024Review
- The Effects of Tocotrienol on Gut Microbiota: A Scoping Review.Life (Basel, Switzerland) · 2023Article
- Effects of E'Jiao on Skeletal Mineralisation, Osteocyte and WNT Signalling Inhibitors in Ovariectomised Rats.Life (Basel, Switzerland) · 2023Article
- Histomorphometry and μCT scan analysis of osteoporosis in spayed female dogs.Open veterinary journal · 2023Article
- Ameliorative Effect of Tocotrienols on Perimenopausal-Associated Osteoporosis-A Review.Antioxidants (Basel, Switzerland) · 2022Review
- Tocotrienol as a Protecting Agent against Glucocorticoid-Induced Osteoporosis: A Mini Review of Potential Mechanisms.Molecules (Basel, Switzerland) · 2022Review
- Normalisation of High Bone Remodelling due to Oestrogen Deficiency by Traditional Chinese FormulationInternational journal of medical sciences · 2022Article
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Menopause is the leading cause of osteoporosis for elderly women due to imbalanced bone remodelling in the absence of oestrogen. The ability of tocotrienol in reversing established bone loss due to oestrogen deficiency remains unclear despite the plenitude of evidence showcasing its preventive effects. This study aimed to investigate the effects of self-emulsified annatto tocotrienol (SEAT) on bone histomorphometry and remodelling in ovariectomised rats. Female Sprague Dawley rats (n=36) were randomly assigned into baseline, sham, ovariectomised (OVX) control, OVX-treated with annatto tocotrienol (AT) (60 mg/kg), SEAT (60 mg/kg) and raloxifene (1 mg/kg). Daily treatment given through oral gavage was started two months after castration. The rats were euthanised after eight weeks of treatment. Blood was collected for bone biomarkers. Femur and lumbar bones were collected for histomorphometry and remodelling markers. The results showed that AT and SEAT improved osteoblast numbers and trabecular mineralisation rate (p<0.05 vs untreated OVX). AT also decreased skeletal sclerostin expression in OVX rats (p<0.05 vs untreated OVX). Similar effects were observed in the raloxifene-treated group. Only SEAT significantly increased bone formation rate and reduced RANKL/OPG ratio (p<0.05 vs untreated OVX). However, no changes in osteoclast-related parameters were observed among the groups (p>0.05). In conclusion, SEAT exerts potential skeletal anabolic properties by increasing bone formation, suppressing sclerostin expression and reducing RANKL/OPG ratio in rats with oestrogen deficiency.
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