Regenerative medicine and connective tissues: cartilage versus tendon.
Summary of "Regenerative medicine and connective tissues: cartilage versus tendon."
Progress in medicine over recent decades has notably increased life expectancy in the Western world. Such advance implies that the treatment of degenerative processes associated with ageing has become one of the major tasks of current medicine and therapeutics. High expectation relies on stem cell research in order to apply cell therapies to ameliorate degenerative processes, remarkably those concerning the circulatory, locomotor and nervous systems. However, the skeletal connective tissues have revealed that cell plasticity is a factor of major importance in regenerative therapies. Most evidence indicates that connective tissue cells of cartilage, tendons, ligaments and fascia share common progenitors during their differentiation, which are regulated by a number of director genes and a panel of miRNAs coupled with transforming growth factor-β signalling. Furthermore, we know that not only stem cells but also differentiated cells from these tissues may dedifferentiate and redifferentiate, even one into another. Hence, modulation of cell plasticity might be a potential target for regenerative therapies in the future. In this review, we highlight classical concepts about the properties and differentiation of the connective tissues and their relation with recent advances in the study of stem cells, significant for regenerative medicine, paying special attention to cartilage and tendons. Copyright © 2011 John Wiley & Sons, Ltd.
Departamento de Anatomía y Biología Celular, Universidad de Cantabria/IFIMAV, Santander 39011, Spain.
This article was published in the following journal.
Name: Journal of tissue engineering and regenerative medicine
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Medical and Biotech [MESH] Definitions
A field of medicine concerned with developing and using strategies aimed at repair or replacement of damaged, diseased, or metabolically deficient organs, tissues, and cells via TISSUE ENGINEERING; CELL TRANSPLANTATION; and ARTIFICIAL ORGANS and BIOARTIFICIAL ORGANS and tissues.
A non-vascular form of connective tissue composed of CHONDROCYTES embedded in a matrix that includes CHONDROITIN SULFATE and various types of FIBRILLAR COLLAGEN. There are three major types: HYALINE CARTILAGE; FIBROCARTILAGE; and ELASTIC CARTILAGE.
Inflammation of the synovial lining of a tendon sheath. Causes include trauma, tendon stress, bacterial disease (gonorrhea, tuberculosis), rheumatic disease, and gout. Common sites are the hand, wrist, shoulder capsule, hip capsule, hamstring muscles, and Achilles tendon. The tendon sheaths become inflamed and painful, and accumulate fluid. Joint mobility is usually reduced.
Large HYALURONAN-containing proteoglycans found in articular cartilage (CARTILAGE, ARTICULAR). They form into aggregates that provide tissues with the capacity to resist high compressive and tensile forces.
Surgical procedure by which a tendon is incised at its insertion and placed at an anatomical site distant from the original insertion. The tendon remains attached at the point of origin and takes over the function of a muscle inactivated by trauma or disease.