A human lung mast cell chymotrypsin-like enzyme. Identification and partial characterization.

نویسندگان
چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

A human lung mast cell chymotrypsin-like enzyme. Identification and partial characterization.

We have used a high performance liquid chromatography assay, which detects chymotryptic cleavage of the phe8-his9 bond of angiotensin I to yield angiotensin II, in order to examine human lung mast cells for the presence of chymotryptic activity. Mast cells, purified from human lung by enzymatic dispersion, countercurrent elutriation, and Percoll gradient centrifugation, were lysed or challenged...

متن کامل

An Enzyme in Mast Cells with Properties like Chymotrypsin

Mast cells contain an enzyme which hydrolyzes 3-chloroacetoxy-2-naphthoic acid anilide. By using highly purified mast cells isolated by differential centrifugation in high density sucrose solutions we have been able to study this enzymatic activity in more detail. The enzyme has properties similar to those of chymotrypsin: Chymotrypsin will hydrolyze the histochemical substrate, and the chymotr...

متن کامل

Purification and Partial Characterization of a Thrombin-Like Enzyme (AH144) from Venom of Iranian Snake Agkistrodon Halys

The snake venom´s thrombin-like enzymes comprise a number of serine proteases, which are functionally and structurally related to thrombin. Purification and partial characterization of a thrombin-like enzyme from the venom of the Iranian snake, Agkistrodon halys, was the aim of this study. Purification was carried out by a combination of variety of chromatographic methods that included: gel...

متن کامل

The human lung mast cell.

Mast cells are present in human lung tissue, pulmonary epithelium, and free in the bronchial lumen. By virtue of their location and their possession of specific receptors for IgE and complement fragments, these cells are sentinel cells in host defense. The preformed granular mediators and newly generated lipid mediators liberated upon activation of mast cells by a variety of secretagogues suppl...

متن کامل

Human lung mast cell heterogeneity.

What are the implications of these findings for the understanding of immune responses to respiratory viral infections in human disease? We know that, in the airways of infants with respiratory syn-cytial virus bronchiolitis, there is massive production of proinflammatory cyto-kines 8 9 and chemokines 10 11 and recruitment of inflammatory cells. 12 It is difficult in clinical studies which use b...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Journal of Clinical Investigation

سال: 1986

ISSN: 0021-9738

DOI: 10.1172/jci112276