Growth Differentiation Factor 5 and Metabolic Diseases
Growth/differentiation factor-5(GDF-5)belongs to transforming growth factor-β(TGF-β)family,which is expressed in bone,cartilage,heart,brain,kidney,skeletal muscle and tendon,liver,fat and other organs and tissues as well.GDF-5 binds to receptor BMPR-I/BMPR-Ⅱ and activates different signaling pathways such as smad1/5/8,PI3K/Akt,p38-MAPK.For a long time,numerous studies have shown that GDF-5 plays an important role in protecting joints.However,researchers have found GDF-5 also plays significant biological functions in other organs.For example,GDF-5 improves cardiac function by reducing oxidative stress and fibrosis in infarcted hearts.GDF-5 can also reduce oxidative stress in the brain and increase the number of neurons in effort to delay the progression of Alzheimer's disease and Parkinson's disease.It is a situation,research on GDF-5,at present,mainly focuses on the growth and repair of bone,cartilage and tendons,while there are few reports on its biological effects in other organs.Therefore,this article reviews and summarizes the research progress on GDF-5 and metabolic diseases in recent years in order to provide new insights and theoretical basis for the role of GDF-5 in improving metabolic diseases.
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