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Biomedical subjects

J M Gordon

Publications and source records attributed to J M Gordon.

53 records · Page 3Linked to original sources
PubMed1977

Quantitation and immunocytochemical localization of human skin collagenase in basal cell carcinoma.

Human skin collagenase was quantitated by radioimmunoassay in 21 basal cell carcinomas. Immunoreactive collagenase protein was found to be approximately 2-fold greater in extracts of these tumors than in extracts of normal skin, suggesting that this enzyme may be important in the pathogenesis of soft tissue destruction in vivo. To further define the role of collagenase in such destruction, immunofluorescent staining with specific antiserum to human skin collagenase was used to localize collagenase in the basal cell carcinomas. The enzyme was found only in the stromal elements surrounding the tumor islands. No staining of the epithelial components of the basal cell carcinomas was found. These findings suggest that the normal connective tissue elements may have been stimulated to produce an increased amount of collagenase and emphasize the importance of epithelial-stromal interaction in soft tissue invasiveness.

Basal Cell Carcinoma↗
PubMed1968

Synthesis of the first component of human complement in vitro.

Isolated segments of human colon and to a lesser extent ileum were capable of synthesizing hemolytically active C'1. This conclusion was based on the following evidence: After elimination of C'1 from tissue with EDTA, we found that segments of the intestinal tract in short-term organ culture showed a 50-1000-fold increase in C'1 activity. The rate of production of C'1 in human intestine was highly temperature dependent; C'1 production was reversibly inhibited by puromycin and actinomycin D. Furthermore, (14)C-labeled amino acids were incorporated into molecules which behaved like C'1. No significant C'1(hu) synthesis was observed in isolated segments of jejunum, stomach, liver, kidney, lung, spleen, lymph node, and thymus.

Amino Acids↗
PubMedDate not supplied

Levels of anti-A and anti-B in commercial immune globulins.

Samples from 168 lots of immune serum globulin, tetanus immune globulin, and Rho (D) immune globulin produced by seven American manufacturers during the period 1973-1977 were analyzed for anti-A and anti-B content by saline and antiglobulin titration. There was appreciable variation among manufacturers, but between 1973 and 1975 all products showed a significant decrease in alloantibody titer. This trend did not continue during the interval 1975-1977; the titers of most manufacturers' products remained near the 1975 level. The anti-A titer of a given product was approximately one dilution higher than the anti-B; both titers were usually increased by anti-human serum, though this occurred more often in the case of anti-B.

ABO Blood-Group System↗
PubMedDate not supplied

Change--an enigma.

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Humans↗
PubMedDate not supplied

Volunteerism.

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Humans↗
PubMedDate not supplied

Moving into cyberspace.

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Computer Communication Networks↗