Vitamin A compounds include vitamin A and its derivatives. Tretinoin is one of the compounds. It plays an important role in the prevention of tumor including the incidence of breast cancer and a variety of cell differentiation.
They mainly work through tretinoin receptors and related receptors of steroid hormone nuclear receptor family.Studies from cosmetics material have shown that RAR± plays a key role for tretinoin to inhibit the growth of breast cancer cells. It can be used as an indicator to guide the clinical application of retinoic acid treatment of breast cancer, and its mRNA expression is related to the estrogen receptor. Retinoic acid plays an important role in the proliferation and differentiation of breast cancer, its combination with retinoic acid receptors and related receptors) play a role. The study found that retinoic acid on breast cancer cell growth inhibition associated with ER. Retinoic acid of the ER-positive breast cancer cell growth can be inhibited and ER-negative breast cancer cells to retinoic acid tolerance.
ER-positive breast cancer cells of RAR± mRNA expression was significantly higher than the ER-negative cells, the expression of other receptor subtypes was no significant difference between the two cell types. RAR± and there is a certain relationship between the ER and retinoic acid. RAR± and mRNA high expression of retinoic acid inhibits breast cell growth is directly related to, play a key role of RAR± in retinoic acid inhibit the growth of breast cancer cells. RAR± also permit the application of retinoic acid treatment and prevention of breast cancer as guide clinical indicators.
In addition, Chinese scientists first discovered that cheap tretinoin can inhibit lung transplant rejection. The key to solve the problem of immune regulation after organ transplantation is the tregs cells, which also known as regulatory T cells. It is not only in maintaining immune homeostasis and prevention of autoimmune diseases play an important role, it can effectively inhibit organ transplant rejection after the reaction rates. However, Tregs cell lung transplantation ineffective, mainly because the lungs and the outside world of hollow organs, easy to produce a more severe inflammatory response in patients after lung transplantation. In this inflammatory environment, Tregs can be transformed into Th17 cells, which can be accelerated obliterative bronchiolitis occurrence of severe cases lead to death of lung transplant patients.
All-trans tretinoin can stabilize the tregs cells and inhibit its conversion to Th17 cells in the inflammatory environment. Even in the environment of inflammation after lung transplantation in human body, tregs can still maintain its immunosuppressive function and inhibit conversion to Th17 cells. All-trans tretinoin has been widely used in the treatment of cancer, leukemia, bone marrow dysplasia disease. The research has opened up new opportunities for prevention and treatment of lung transplant rejection reaction in the field of transplantation immunology. It lays an important theoretical basis for the worldwide research of regulatory T cells and clinical application of allogeneic organ transplants.Source:http://www.cosprm.com
The application of tungsten in various industries
Steel Industry Most of tungsten applied in the production of special steels. The widely used high-speed steel was containing 9-24% of tungsten, 3.8-4.6% of chromium, 1-5% of vanadium, 4-7% of cobalt, 0.7-1.5% of carbon.
Magic effects of coconut oil
According to records, coconut oil can be regarded as the nobility of skin care plant extracts. It was rich in exotic tension of tropical plants, which can enhance the contractile force of the pores, perfectly beautify and nourish the skin.
Exploring the Potentials of Nano-Aluminum Powder
Nano-aluminum powder, a material with remarkable properties due to its minuscule particle size, is revolutionizing various industries with its high reactivity and large specific surface area. Unlike its bulk counterpart, nano-aluminum powder begins to oxidize at a lower temperature of 550°C, compared to the 950°C oxidation point of ordinary aluminum. This lower ignition energy and full combustion without apparent cohesion make it a superior choice for applications requiring high energy and efficiency. The unique characteristics of nano-aluminum powder, such as faster burning rates and greater heat release, are largely influenced by its synthesis method, which determines its particle size, surface area, and shape.
