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Saeed NM, Ramadan LA, El-Sabbagh WA, Said MA, Abdel-Rahman HM, Mekky RH. Exploring the anti-osteoporosis potential of Petroselinum crispum (Mill.) Fuss extract employing experimentally ovariectomized rat model and network pharmacology approach. Fitoterapia 2024; 175:105971. [PMID: 38663562 DOI: 10.1016/j.fitote.2024.105971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 03/11/2024] [Accepted: 04/21/2024] [Indexed: 04/30/2024]
Abstract
One of the most prevalent secondary osteoporosis is ovariectomy-induced osteoporosis. Parsley (Petroselinum crispum) has potent estrogenic and antioxidant properties and was used traditionally in the treatment of amenorrhea and dysmenorrhea. The present study aimed to characterize parsley leaf extract (PLE) employing RP-HPLC-MS-MS/MS-based method and possible protective effect in ovariectomized (OVX)-induced osteoporosis in rats was assessed. Rats were randomly assigned into SHAM group, OVX group, PLE + OVX group (150 mg/kg/day, p.o), and estradiol benzoate (E2) + OVX group (30 μg/kg/day, s.c). After eight weeks following ovariectomy, biomarkers of bone strength, bone resorption, oxidative stress and histopathology were carried out. A network pharmacology approach investigated the key targets and potential mechanisms by of PLE metabolites against osteoporosis using databases: PubChem, BindingDB server, DisGeNET, ShinyGO, and KEGG Pathway. Moreover, FunRich 3.1.3, Cytoscape 3.10.0, and MOE 2019.0102 softwares were used for network pharmacology analysis and molecular docking studies. Flavones and hydroxycinnamic acid derivatives were predominant among 38 metabolites in PLE. It significantly restored bone strength and bone resorption biomarkers, osteocalcin (OST), oxidative stress biomarkers and histopathological alterations. The employed network pharmacology approach revealed that 14 primary target genes were associated with decreasing the severity of osteoporosis. Molecular docking revealed that cGMP-PKG signaling pathway has the highest fold enrichment and its downstream PDE5A. Luteolin, diosmetin, and isorhamnetin derivatives affected mostly osteoporosis targets. PLE exhibited protective action against ovariectomy-induced osteoporosis in rats and may be a promising therapy for premenopausal bone loss. cGMP-PKG signaling pathway could be a promising target for PLE in treating osteoporosis.
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Affiliation(s)
- Noha M Saeed
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Egyptian Russian University, Badr City, Cairo-Suez Road, 11829 Cairo, Egypt.
| | - Laila A Ramadan
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Egyptian Russian University, Badr City, Cairo-Suez Road, 11829 Cairo, Egypt
| | - Walaa A El-Sabbagh
- Drug Radiation Research Department, National Centre for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), 11787 Cairo, Egypt
| | - Mohamed A Said
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Egyptian Russian University, Badr City, Cairo 11829, Egypt
| | - Hanaa M Abdel-Rahman
- Department of Pharmacy Practice, Faculty of Pharmacy, Egyptian Russian University, Cairo 11829, Egypt; Department of Forensic Medicine and Toxicology, Faculty of Medicine, Ain Shams University, Cairo 11562, Egypt
| | - Reham Hassan Mekky
- Department of Pharmacognosy, Faculty of Pharmacy, Egyptian Russian University, Badr City, Cairo-Suez Road, 11829, Cairo, Egypt..
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Proia P, Rossi C, Alioto A, Amato A, Polizzotto C, Pagliaro A, Kuliś S, Baldassano S. MiRNAs Expression Modulates Osteogenesis in Response to Exercise and Nutrition. Genes (Basel) 2023; 14:1667. [PMID: 37761807 PMCID: PMC10529960 DOI: 10.3390/genes14091667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 08/15/2023] [Accepted: 08/21/2023] [Indexed: 09/29/2023] Open
Abstract
In recent years, many articles have been published describing the impact of physical activity and diet on bone health. This review has aimed to figure out the possible epigenetic mechanisms that influence bone metabolism. Many studies highlighted the effects of macro and micronutrients combined with exercise on the regulation of gene expression through miRs. The present review will describe how physical activity and nutrition can prevent abnormal epigenetic regulation that otherwise could lead to bone-metabolism-related diseases, the most significant of which is osteoporosis. Nowadays, it is known that this effect can be carried out not only by endogenously produced miRs, but also through those intakes through the diet. Indeed, they have also been found in the transcriptome of animals and plants, and it is possible to hypothesise an interaction between miRNAs produced by different kingdoms and epigenetic influences on human gene expression. In particular, the key to the activation pathways triggered by diet and physical activity appears to be the activation of Runt-related transcription factor 2 (RUNX2), the expression of which is regulated by several miRs. Among the main miRs involved are exercise-induced miR21 and 21-5p, and food-induced miR 221-3p and 222-3p.
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Affiliation(s)
- Patrizia Proia
- Sport and Exercise Sciences Research Unit, Department of Psychology, Educational Science and Human Movement, University of Palermo, Via Pascoli 6, 90144 Palermo, Italy; (C.R.); (A.A.); (C.P.); (A.P.)
| | - Carlo Rossi
- Sport and Exercise Sciences Research Unit, Department of Psychology, Educational Science and Human Movement, University of Palermo, Via Pascoli 6, 90144 Palermo, Italy; (C.R.); (A.A.); (C.P.); (A.P.)
- Centro Medico di Fisioterapia “Villa Sarina”, 91011 Alcamo, Italy
| | - Anna Alioto
- Sport and Exercise Sciences Research Unit, Department of Psychology, Educational Science and Human Movement, University of Palermo, Via Pascoli 6, 90144 Palermo, Italy; (C.R.); (A.A.); (C.P.); (A.P.)
| | - Alessandra Amato
- Department of Biomedical and Biotechnological Sciences, Section of Anatomy, Histology and Movement Science, School of Medicine, University of Catania, Via S. Sofia n°97, 95123 Catania, Italy;
| | - Caterina Polizzotto
- Sport and Exercise Sciences Research Unit, Department of Psychology, Educational Science and Human Movement, University of Palermo, Via Pascoli 6, 90144 Palermo, Italy; (C.R.); (A.A.); (C.P.); (A.P.)
| | - Andrea Pagliaro
- Sport and Exercise Sciences Research Unit, Department of Psychology, Educational Science and Human Movement, University of Palermo, Via Pascoli 6, 90144 Palermo, Italy; (C.R.); (A.A.); (C.P.); (A.P.)
| | - Szymon Kuliś
- Faculty of Physical Education, Józef Piłsudski University of Physical Education, 00-968 Warsaw, Poland;
| | - Sara Baldassano
- Department of Biological Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, 90128 Palermo, Italy;
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Bhattarai G, Min CK, Jeon YM, Bashyal R, Poudel SB, Kook SH, Lee JC. Oral supplementation with p-coumaric acid protects mice against diabetes-associated spontaneous destruction of periodontal tissue. J Periodontal Res 2019; 54:690-701. [PMID: 31328274 DOI: 10.1111/jre.12678] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Revised: 04/09/2019] [Accepted: 06/09/2019] [Indexed: 02/06/2023]
Abstract
OBJECTIVE Dietary bioactive materials having anti-inflammatory and antioxidant potentials are able to inhibit diabetes-associated periodontal complications. Although numerous studies indicate that administration of p-coumaric acid (p-CA) ameliorates diabetes and diabetes-related complications, the roles of p-CA on periodontal tissue destruction in diabetic mice and the possible mechanisms therein are not completely understood. In this study, we evaluated whether supplementation with p-CA protects mice against diabetes-associated spontaneous periodontal destruction and also explored the associated mechanism therein using in vivo and in vitro experimental systems. MATERIALS AND METHODS C57BL/6 male mice were divided into sham, streptozotocin (STZ), and STZ+CA groups (n = 5/group). Sham group was intraperitoneally injected with sodium buffer, whereas other two groups were injected with the buffer containing 160 mg/kg of STZ. STZ-induced diabetic mice received oral gavage with p-CA (50 mg/kg) (STZ+CA group) or with buffer only (STZ group) daily for 6 weeks. The effect of p-CA on diabetes-associated spontaneous periodontal destruction was evaluated using μCT analysis, hematoxylin and eosin staining, tartrate-resistant acid phosphatase staining, and immunohistochemical staining methods. The efficacies of p-CA on cell proliferation, osteoblast differentiation, reactive oxygen species (ROS) accumulation, and antioxidant-related marker expression were examined using human periodontal ligament fibroblasts (hPLFs) cultured under high glucose condition. RESULTS Streptozotocin group exhibited periodontal tissue destruction along with increased inflammation, oxidative stress, and osteoclast formation, as well as with decreased osteogenesis. However, oral administration with p-CA protected mice against STZ-induced periodontal destruction by inhibiting inflammation and osteoclastic activation. STZ+CA group also showed higher expression of antioxidant and osteogenic markers in periodontal tissue than did STZ group. Treatment with high glucose concentration (30 mmol/L) impaired proliferation and osteoblast differentiation of hPLFs along with cellular ROS accumulation, whereas these impairments were almost completely disappeared by supplementation with p-CA. CONCLUSION These findings demonstrate that supplementation with p-CA inhibits diabetes-associated spontaneous destruction of periodontal tissue by enhancing anti-inflammatory, anti-osteoclastogenic, and antioxidant defense systems in STZ-treated mice.
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Affiliation(s)
- Govinda Bhattarai
- Cluster for Craniofacial Development and Regeneration Research, Institute of Oral Biosciences and School of Dentistry, Chonbuk National University, Jeonju, Korea
| | - Chang-Ki Min
- Cluster for Craniofacial Development and Regeneration Research, Institute of Oral Biosciences and School of Dentistry, Chonbuk National University, Jeonju, Korea
| | - Young-Mi Jeon
- Cluster for Craniofacial Development and Regeneration Research, Institute of Oral Biosciences and School of Dentistry, Chonbuk National University, Jeonju, Korea.,Research Institute of Clinical Medicine of Chonbuk National University, Jeonju, Korea
| | - Rajendra Bashyal
- Cluster for Craniofacial Development and Regeneration Research, Institute of Oral Biosciences and School of Dentistry, Chonbuk National University, Jeonju, Korea
| | - Sher B Poudel
- Cluster for Craniofacial Development and Regeneration Research, Institute of Oral Biosciences and School of Dentistry, Chonbuk National University, Jeonju, Korea
| | - Sung-Ho Kook
- Cluster for Craniofacial Development and Regeneration Research, Institute of Oral Biosciences and School of Dentistry, Chonbuk National University, Jeonju, Korea.,Department of Bioactive Material Sciences, Research Center of Bioactive Materials, Chonbuk National University, Jeonju, Korea
| | - Jeong-Chae Lee
- Cluster for Craniofacial Development and Regeneration Research, Institute of Oral Biosciences and School of Dentistry, Chonbuk National University, Jeonju, Korea.,Research Institute of Clinical Medicine of Chonbuk National University, Jeonju, Korea.,Department of Bioactive Material Sciences, Research Center of Bioactive Materials, Chonbuk National University, Jeonju, Korea
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Lee JH, Chung YH, Kim HH, Bang JS, Jung TW, Park T, Park J, Kim U, Lee SH, Jeong JH. p-Coumaric acid stimulates longitudinal bone growth through increasing the serum production and expression levels of insulin-like growth factor 1 in rats. Biochem Biophys Res Commun 2018; 505:1103-1106. [PMID: 30318120 DOI: 10.1016/j.bbrc.2018.10.046] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 10/07/2018] [Indexed: 10/28/2022]
Abstract
The aim of the present study was to examine the effects of p-coumaric acid on the longitudinal growth of the long bone in adolescent male rats. Teatment with p-coumaric acid significantly increased the tibial length and the height of each growth plate zone and the ratio of 5-bromo-2'-deoxyuridine-positive cells relative to total proliferative cells. Expression of insulin-like growth factor 1 and its receptor in the proliferative and hypertrophic zones, and serum levels of growth hormone and insulin-like growth factor 1 were significantly increased as well in the p-coumaric acid-treated group. Via increasing both the serum level of insulin-like growth factor 1 and its expression, p-coumaric acid could promote cell proliferation in growth plate zones. These results suggest that p-coumaric acid has the potential to increase height and may be a feasible alternative to growth hormone therapy.
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Affiliation(s)
- Jong Hyuk Lee
- Department of Pharmaceutical Engineering, College of Life and Health Science, Hoseo University, Asan, 31499, Republic of Korea
| | - Yoon Hee Chung
- Department of Anatomy, College of Medicine, Chung-Ang University, Seoul, 156-756, Republic of Korea
| | - Ho Hyun Kim
- Korea Medicine Research Institute, Inc., Gyeonggi-do, 462-739, Republic of Korea
| | - Joon Seok Bang
- Graduate School of Clinical Pharmacy, Sookmyung Women's University, Seoul, 04310, Republic of Korea
| | - Tae Woo Jung
- Research Administration Team, Seoul National University Bundang Hospital, Seongnam, 13620, Republic of Korea
| | - Taekwang Park
- Department of Pharmacology, College of Medicine, Chung-Ang University, Seoul, 156-756, Republic of Korea
| | - Jinwoo Park
- Department of Pharmacology, College of Medicine, Chung-Ang University, Seoul, 156-756, Republic of Korea
| | - Uiseok Kim
- Department of Pharmacology, College of Medicine, Chung-Ang University, Seoul, 156-756, Republic of Korea
| | - Sung Hoon Lee
- Department of Pharmacology, College of Pharmacy, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Ji Hoon Jeong
- Department of Pharmacology, College of Medicine, Chung-Ang University, Seoul, 156-756, Republic of Korea.
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Torre E. Molecular signaling mechanisms behind polyphenol-induced bone anabolism. PHYTOCHEMISTRY REVIEWS : PROCEEDINGS OF THE PHYTOCHEMICAL SOCIETY OF EUROPE 2017; 16:1183-1226. [PMID: 29200988 PMCID: PMC5696504 DOI: 10.1007/s11101-017-9529-x] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Accepted: 08/20/2017] [Indexed: 05/08/2023]
Abstract
For millennia, in the different cultures all over the world, plants have been extensively used as a source of therapeutic agents with wide-ranging medicinal applications, thus becoming part of a rational clinical and pharmacological investigation over the years. As bioactive molecules, plant-derived polyphenols have been demonstrated to exert many effects on human health by acting on different biological systems, thus their therapeutic potential would represent a novel approach on which natural product-based drug discovery and development could be based in the future. Many reports have provided evidence for the benefits derived from the dietary supplementation of polyphenols in the prevention and treatment of osteoporosis. Polyphenols are able to protect the bone, thanks to their antioxidant properties, as well as their anti-inflammatory actions by involving diverse signaling pathways, thus leading to bone anabolic effects and decreased bone resorption. This review is meant to summarize the research works performed so far, by elucidating the molecular mechanisms of action of polyphenols in a bone regeneration context, aiming at a better understanding of a possible application in the development of medical devices for bone tissue regeneration.
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Affiliation(s)
- Elisa Torre
- Nobil Bio Ricerche srl, Via Valcastellana, 26, 14037 Portacomaro, AT Italy
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Yamaguchi M. The botanical molecule p-hydroxycinnamic acid as a new osteogenic agent: insight into the treatment of cancer bone metastases. Mol Cell Biochem 2016; 421:193-203. [DOI: 10.1007/s11010-016-2803-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Accepted: 08/25/2016] [Indexed: 10/21/2022]
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Yamaguchi M, Baile CA, Zhu S, Shoji M. Bioactive flavonoid p-hydroxycinnamic acid stimulates osteoblastogenesis and suppresses adipogenesis in bone marrow culture. Cell Tissue Res 2013; 354:743-50. [PMID: 24026435 PMCID: PMC3832765 DOI: 10.1007/s00441-013-1707-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2013] [Accepted: 07/16/2013] [Indexed: 11/24/2022]
Abstract
The bioactive flavonoid p-hydroxycinnamic acid (HCA), which is an intermediate-metabolic substance in plants and fruits, is synthesized from tyrosine. The biological effect of HCA is poorly understood. Among cinnamic acid and its related compounds, HCA has a specific-anabolic effect on bone, being found to stimulate osteoblastogenesis and to inhibit osteoclastogenesis through the suppression of NF-κB signaling, thereby preventing bone loss. Bone marrow mesenchymal stem cells give rise to ostoblasts and adipocytes. HCA might therefore have effects on osteoblastogenesis and adipogenesis in bone marrow culture. This study demonstrates (1) that HCA has stimulatory effects on osteoblastogenesis and mineralization and suppressive effects on adipogenesis in mouse bone marrow culture and (2) that HCA depresses adipogenesis in mouse 3T3-L1 preadipocytes in vitro. Such effects of HCA might be involved in the differentiation of mesenchymal stem cells.
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Affiliation(s)
- Masayoshi Yamaguchi
- Department of Hematology and Biomedical Oncology, Winship Cancer Institute, Emory University School of Medicine, Atlanta, GA, 30322, USA,
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El-Seedi HR, El-Said AMA, Khalifa SAM, Göransson U, Bohlin L, Borg-Karlson AK, Verpoorte R. Biosynthesis, natural sources, dietary intake, pharmacokinetic properties, and biological activities of hydroxycinnamic acids. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:10877-95. [PMID: 22931195 DOI: 10.1021/jf301807g] [Citation(s) in RCA: 257] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Hydroxycinnamic acids are the most widely distributed phenolic acids in plants. Broadly speaking, they can be defined as compounds derived from cinnamic acid. They are present at high concentrations in many food products, including fruits, vegetables, tea, cocoa, and wine. A diet rich in hydroxycinnamic acids is thought to be associated with beneficial health effects such as a reduced risk of cardiovascular disease. The impact of hydroxycinnamic acids on health depends on their intake and pharmacokinetic properties. This review discusses their chemistry, biosynthesis, natural sources, dietary intake, and pharmacokinetic properties.
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Affiliation(s)
- Hesham R El-Seedi
- Division of Pharmacognosy, Department of Medicinal Chemistry, Uppsala University, Biomedical Centre, Box 574, SE-75123 Uppsala, Sweden.
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Fifen J, Nsangou M, Dhaouadi Z, Motapon O, Lahmar S. Single or double hydrogen atom transfer in the reaction of metal – Associated phenolic acids with •OH radical: DFT study. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.theochem.2008.12.046] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Hydrogen atom transfer in the reaction of hydroxycinnamic acids with OH and HO2 radicals: DFT study. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.theochem.2008.04.028] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Oral administration of phytocomponent p-hydroxycinnamic acid prevents bone loss in ovariectomized rats. Mol Cell Biochem 2007; 311:31-6. [DOI: 10.1007/s11010-007-9689-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2007] [Accepted: 12/16/2007] [Indexed: 10/22/2022]
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12
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Yamaguchi M. Regulatory mechanism of food factors in bone metabolism and prevention of osteoporosis. YAKUGAKU ZASSHI 2006; 126:1117-37. [PMID: 17077614 DOI: 10.1248/yakushi.126.1117] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Aging induces a decrease in bone mass, and osteoporosis with its accompanying decrease in bone mass is widely recognized as a major public health problem. Bone loss with increasing age may be due to decreased bone formation and increased bone resorption. Pharmacologic and nutritional factors may prevent bone loss with aging, although chemical compounds in food and plants which act on bone metabolism are poorly understood. We have found that isoflavones (including genistein and daidzein), which are contained in soybeans, have a stimulatory effect on osteoblastic bone formation and an inhibitory effect on osteoclastic bone resorption, thereby increasing bone mass. Menaquinone-7, an analogue of vitamin K(2) which is abundant in fermented soybeans, has been demonstrated to stimulate osteoblastic bone formation and to inhibit osteoclastic bone resorption. Of various carotenoids, beta-cryptoxanthin, which is abundant in Satsuma mandarin (Citrus unchiu MARC), has a stimulatory effect on osteoblastic bone formation and an inhibitory effect on osteoclastic bone resorption. The supplementation of these factors has a preventive effect on bone loss induced by ovariectomy in rats, which are an animal model of osteoporosis, and their intake has been shown to have a stimulatory effect on bone mass in humans. Factors with an anabolic effect on bone metabolism were found in extracts obtained from wasabi leafstalk (Wasabi japonica MATSUM), the marine alga Sargassum horneri, and bee pollen Cistus ladaniferus. Phytocomponent p-hydroxycinnamic acid was also found to have an anabolic effect on bone metabolism. Food chemical factors thus play a role in bone health and may be important in the prevention of bone loss with increasing age.
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Affiliation(s)
- Masayoshi Yamaguchi
- Laboratory of Endocrinology and Molecular Metabolism, Graduate School of Nutritional Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka City 422-8526, Japan.
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Lai YL, Yamaguchi M. Phytocomponent p-hydroxycinnamic acid stimulates bone formation and inhibits bone resorption in rat femoral tissues in vitro. Mol Cell Biochem 2006; 292:45-52. [PMID: 17036165 DOI: 10.1007/s11010-006-9175-x] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2005] [Accepted: 03/01/2006] [Indexed: 11/27/2022]
Abstract
The effect of cinnamic acid or its related compounds, which is present in many plants, on bone metabolism has not been clarified yet. The effect of cinnamic acid, p-hydroxycinnamic acid (HCA), ferulic acid, caffeic acid, or 3,4-dimethoxycinnamic acid (DCA) on bone calcium content in vitro was investigated. Rat femoral-diaphyseal (cortical bone) and -metaphyseal (trabecular bone) tissues were cultured for 48,h in Dulbecco's modified Eagle's medium (high glucose, 4.5%) supplemented with antibiotics and bovine serum albumin. The presence of HCA (10(-5) or 10(-4),M) caused a significant increase in calcium content in the diaphyseal or metaphyseal tissues. Such an effect was not observed in the presence of cinnamic acid or other compounds at the concentration of 10(-5) or 10(-4),M. Alkaline phosphatase activity and deoxyribonucleic acid (DNA) content in the diaphyseal or metaphyseal tissues was significantly increased in the presence of HCA (10(-5) or 10(-4),M). The effect of HCA (10(-4),M) in increasing calcium content, alkaline phosphatase activity, and DNA content in the diaphyseal or metaphyseal tissues was completely prevented in the presence of cycloheximide (10(-6),M), an inhibitor of protein synthesis. Thus HCA had anabolic effects on bone components. The presence of parathyroid hormone (PTH; 10(-7),M), a bone-resorbing factor, caused a significant decrease in calcium content and a corresponding elevation in medium glucose consumption, lactic acid production or tartrate-resistant acid phosphatase (TRACP) activity in the diaphyseal or metaphyseal tissues. These alterations were completely prevented in the presence of HCA (10(-5) or 10(-4),M). This study demonstrates that p-hydroxycinnamic acid (HCA) has stimulatory effects on bone formation and inhibitory effects on bone resorption in tissue culture in vitro.
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Affiliation(s)
- Ying Ling Lai
- Laboratory of Endocrinology and Molecular Metabolism, Graduate School of Nutritional Sciences, University of Shizuoka, 52-1 Yada, Shizuoka 422-8526, Japan
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