Stratum corneum(Horny layer)
Stratum corneum(Horny layer) is the outermost layer of the epidermis, the surface layer of the skin we normally see.
Allergy
/in Glossary /by Mediplus PharmaAn allergy is a condition where the immune response, which normally protects the body from infectious microorganisms like bacteria and parasites, as well as foreign substances, becomes abnormal. Changes in the environment and lifestyle are considered to trigger allergies. Common symptoms include sneezing, rashes, and difficulty breathing.
Metal allergy
/in Glossary /by Mediplus PharmaMetal allergy is an allergic reaction caused by contact of certain metals with the skin. It occurs when the immune system recognizes metal ions as foreign substances and reacts excessively. Metal allergy is a type of contact dermatitis, and symptoms include itching, redness, swelling, and blistering of the skin.
Dissolution
/in Glossary /by Mediplus PharmaDissolution is the state in which a substance is dissolved in a solvent. A dissolved substance is uniformly dispersed in a solvent and is invisible.
Molds of the genus Aspergillus
/in Glossary /by Mediplus PharmaMolds of the genus Aspergillus are a group of fungi found in various environments, such as soil, plant debris, and air. They can be a source of contamination of food and feed, and under certain conditions can cause infections in humans and animals. On the other hand, some species are used to produce fermented foods.
Solvent
/in Glossary /by Mediplus PharmaA solvent is a liquid in which a solute is dissolved.
Dihydric phenol
/in Glossary /by Mediplus PharmaDihydric phenol is a chemical compound in which two of the six hydrogen atoms of benzene are replaced by hydroxyl groups. The number of hydrogen atoms substituted into the hydroxyl group is the valence, and depending on which two of the six hydrogen atoms are substituted, there are three different positional isomers (ortho, meta, and para positions). All of them have the same molecular weight but different chemical properties.
Keratinocyte
/in Glossary /by Mediplus PharmaKeratinocytes are the cells that make up the majority of the epidermis. They are produced in the basal layer and migrate toward the spinous layer, granular layer, and horny layer through repeated cell division. During this process, they change their shape, composition, and function into spinous cells, granular cells, and horny cells, and finally form scales peel off from the skin (such as dead skin and dandruff).
Tyrosine
/in Glossary /by Mediplus PharmaTyrosine is a type of amino acid that contains phenol within its chemical structure. It is a precursor of the thyroid hormones thyroxine and melanin, among others. Tyrosinase, which has phenol oxidizing activity, catalyzes and contributes to the synthesis reaction of melanin from tyrosine.
Basal layer
/in Glossary /by Mediplus PharmaThe basal layer is included in the epidermis as a skin structure and is the deepest layer of the epidermis that is composed of basal cells. It has the basement membrane on its adhesive surface with the dermis, which transfers nutrients to and from the dermis and regulates the function of epidermal cells.