Thyptase,a predominant serine protease in mast cells,is released by mast cell degranulation in an enzymatically active form.Recent research suggests that ttyptase plays important roles in mast cell mediated anaphylaxi...Thyptase,a predominant serine protease in mast cells,is released by mast cell degranulation in an enzymatically active form.Recent research suggests that ttyptase plays important roles in mast cell mediated anaphylaxis,angiogenesis,initiation and promotion of neoplasm.This paper reviews tryptase’s struture,molecular biology,biochemistry,processing,activation and its relationship with diseases.展开更多
Mastocytoses are a heterogenous group of diseases characterized by proliferation and accumulation of mast cells in the skin and other organs.They are subdivided into cutaneous mastocytoses; systemic forms, which may a...Mastocytoses are a heterogenous group of diseases characterized by proliferation and accumulation of mast cells in the skin and other organs.They are subdivided into cutaneous mastocytoses; systemic forms, which may appear with or without skin lesions; mast cell sarcomas and extracutaneous, localized, benign mastocytomas.Systemic mastocytoses apart from the skin mainly involve bone marrow, gastrointestinal tract, bones, lymph nodes, spleen and liver.Whereas indolent forms of systemic mastocytosis are mainly treated with antihistamines, glucocorticosteroids and PUVA therapy, the more aggressive forms, including mast cell leukemia, often require cytostatic chemotherapy.A 53-year old patient with beginning “smoldering systemic mastocytosis”failed to respond to high-dose systemic glucocorticosteroids and interferon-α.Treatment with cladribine led to an impressive improvement of skin lesions, a significant decrease in tryptase serum levels and stabilization of bone marrow infiltrates.展开更多
文摘Thyptase,a predominant serine protease in mast cells,is released by mast cell degranulation in an enzymatically active form.Recent research suggests that ttyptase plays important roles in mast cell mediated anaphylaxis,angiogenesis,initiation and promotion of neoplasm.This paper reviews tryptase’s struture,molecular biology,biochemistry,processing,activation and its relationship with diseases.
文摘Mastocytoses are a heterogenous group of diseases characterized by proliferation and accumulation of mast cells in the skin and other organs.They are subdivided into cutaneous mastocytoses; systemic forms, which may appear with or without skin lesions; mast cell sarcomas and extracutaneous, localized, benign mastocytomas.Systemic mastocytoses apart from the skin mainly involve bone marrow, gastrointestinal tract, bones, lymph nodes, spleen and liver.Whereas indolent forms of systemic mastocytosis are mainly treated with antihistamines, glucocorticosteroids and PUVA therapy, the more aggressive forms, including mast cell leukemia, often require cytostatic chemotherapy.A 53-year old patient with beginning “smoldering systemic mastocytosis”failed to respond to high-dose systemic glucocorticosteroids and interferon-α.Treatment with cladribine led to an impressive improvement of skin lesions, a significant decrease in tryptase serum levels and stabilization of bone marrow infiltrates.