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E Bandman

Publications and source records attributed to E Bandman.

61 records · Page 4Linked to original sources

Stabilization of mRNA following serum-induction of quiescent 3T3 cells.

The stability of mRNA has been measured in 3T3 cells in the resting and the growing states, and also during the transition from the resting to the growing state. Pulse labled poly (A)+ mRNA chased with uridine and cytidine supplemented growth medium decayed with a half-life of 6.5 hr in the resting state, 26 hr during the transition from the resting to the growing condition, and 18 hr during serum-stimulated growth. The half-life of poly(A)+ mRNA determined by steady state labeling yielded similar results in resting and serum-stimulated 3T3 cells. Thus during the transition from resting to serum-stimulated growth in 3T3 cells poly(A)+ mRNA becomes more stable.

Blood↗

Fiber type-specific autoantibodies in a dog with eosinophilic myositis.

Serum from a 2-year-old male Belgian sheepdog with eosinophilic myositis, which particularly affects the masticatory muscles, was tested for the presence of muscle-specific autoantibodies. Control type 2 temporalis muscle fibers were selectively stained following incubation with the patient's serum and staphylococcal protein A conjugated to horseradish peroxidase (SPA-HRPO). Likewise, type 2 fibers in the patient's temporalis muscle were selectively stained with SPA-HRPO. The same staining procedures applied to limb muscle did not result in fiber staining. Proteins isolated from the temporalis and triceps brachii muscles of a normal dog were separated under denaturing conditions by one-dimensional sodium dodecyl sulfate-polyacrylamide gel electrophoresis. The separated proteins were transferred onto nitrocellulose paper and incubated with either sera from the patient, normal dogs, or neuromuscular disease controls. Subsequent incubation with peroxidase-conjugated goat anti-dog IgG demonstrated antibodies to at least four proteins of the temporalis muscle (myosin heavy chain and three unidentified proteins) when incubated with the patient's serum but not with the controls. Under all conditions, antibodies to the proteins of the triceps brachii were not detected. These findings establish the presence of autoantibodies to specific temporalis muscle proteins that may initiate the myonecrosis and inflammatory response as well as limit the distribution of the response.

Animals↗