What Are Superior Colliculi?

Collagen, also known as collagen, is a polymer that forms a variety of extracellular matrix in animal cells. It plays the role of binding tissue in animal cells. It is the most important component of the extracellular matrix and the main structure of animal tissues. Sexual protein mainly exists in the form of the following insoluble fibrin.

Collagen

Collagen, also known as collagen, is a polymer that forms various extracellular stroma and plays the role of binding tissue in animal cells. It is the most important component of the extracellular matrix and the most important structure of animal tissues. Sexual protein is mainly in the form of the following insoluble fibrin. In the composition of the human body, it accounts for about 33% of the protein. It plays a role like a "mattress" cement, which can ensure and connect various tissues to support the human body. Structure.

The reason why the skin is full of elasticity is mainly because the collagen in the dermis layer of the skin forms the skin scaffold. Along with human aging, busy work and fatigue, the reduction of skin collagen secretion makes the delicate skin become loose and dry, and wrinkles and luster appear. Therefore, to maintain the youthful vitality of the skin, it is necessary to increase the skin collagen content.

Collagen is the main component of human tissues. It has an inseparable relationship with human organs and cells, so it is used for repair and regeneration of human organs and tissues. Related medical applications of collagen include collagen sponges, silk glands, films (surgical hemostasis, used for cardiac blood vessels, nerves, oral cavity, orthopedics, skin, gynecological surgery, etc.) wound dressings, artificial skin, blood vessels, heart valves, corneas Protective materials, injection collagen (for wrinkle removal, soft tissue filling and filling, treatment of urinary incontinence, urine reflux, orthopedic tissue regeneration filler), drug auxiliary mechanism, collagen matrix template and other uses. Generally speaking, the basic unit of protein is amino acids, while its collagen is one of the main ingredients for maintaining firmness and elasticity.

Collagen is the most abundant protein in animals, accounting for more than 30% of the human body. It belongs to insoluble fibrous proteins and is also a class of extracellular matrix. Collagen can extract different types of collagen from different tissues from animals, and its functions and effects are also different. Extracted collagen can generally dissolve procollagen.

From the perspective of types, there are more than 20 types of collagen in the human body so far. Different types of collagen have different molecular structures and immunological characteristics. They can be divided into three categories according to tissue classification:
The first type: interstitial collagen type I-III, which is mainly present in tissues such as skin and tendons, is collagen between cells and has strong tensile properties. Type II collagen is produced by chondrocytes.
The second type: basement membrane collagen has IV- type glands as basement membrane collagen, which mainly exists in the organs.
The third type: cartilage collagen has - type, which is related to the formation of cartilage.
From the structural point of view, the molecular structure of collagen is unique. The three molecules have a helical structure and polymorphism. The amino acid composition of the collagen peptide chain is unique. The glycine content is one-third. Each of these amino acids accounts for 10%. Among them, hydroxyproline is only found in collagen in animal tissues, and the collagen conversion rate in skin is generally slow. Children's skin is mainly type III, and adult skin is mainly type I. With As the age increases, the number of cross-linked tendons increases, and the more closely the collagen fibers are related to the skin's aging and stiffness, so the skin appears loose.

From the biological effects of collagen, collagen has the highest content in the extracellular matrix (skin), the highest rigidity and tensile strength, and it is the skeleton structure in the extracellular matrix. In addition, other components in the extracellular matrix can be related to collagen. The combination constitutes a unity of structure and function, and at the same time, various types of collagen have certain selectivity when combined with extracellular matrix components.