Biomedical subjects

L Freedman

Publications and source records attributed to L Freedman.

At least 73 records · Page 4Linked to original sources

PubMed1976

Eye color and susceptibility to TTS.

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Adaptation, Ocular↗

PubMed1976

Changes in serum dopamine beta hydroxylase activity related to coma.

Dopamine Beta Hydroxylase (DBH) activity was determined in 24 deeply comatose patients enrolled in the Collaborative Study of Cerebral Survival. All patients had been without cerebral responsiveness or spontaneous respirations for at least 15 minutes. Patients were examined, EEGs performed and blood for DBH drawn within 24 hours of the cerebral insult. DBH activity was lower in the deeply comatose patients than in a group of 51 age matched normal individuals. It is postulated that destruction or inactivation of the central nervous system (CNS) and particularly of the cerebrum may result in lowered serum DBH activity through decreased activation of sympathetic nerve terminals.

Adult↗

PubMed1976

EA rosette-forming lymphoid cells in chickens: specificity of the Fc receptor and its relationship to other surface antigens.

The receptor for erythrocyte-antibody (EA) complexes on the surface of chicken lymphoid cells was investigated using a rosette assay. The chicken EA receptor binds chicken immunoglobulin of the IgG class but not the IgM class. Binding to the EA receptor is dependent upon the Fc region of the immunoglobulin. No receptor for complement analogous to the mammalian C3b receptor was demonstrated on chicken lymphoid cells using the rosette assay. Inhibition studies utilizing immunoglobulins from several species demonstrated that chicken spleen cells do not bind mammalian immunoglobulin but may bind immunoglobulin of other avian species (turkey and duck) and a reptilian species (turtle). The chicken EA receptor is distinct from cell membrane bound immunoglobulin light chains, bursa-specific antigens and thymus-specific antigens. The receptor for EA complexes on chicken lymphoid cells is compared with the Fc receptor on mammalian lymphoid cells in the light of these observations.

Animals↗

PubMed1975