Skin changes caused by D-penicillamine treatment of arthritis. Report of three cases with immunological findings.
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Biomedical subjects
Publications and source records attributed to L Hodge.
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Six patients with mycosis fungoides were treated with methoxsalen and long-wave ultraviolet light. They were assessed clinically and histologically before and after treatment. All six patients showed clinical improvement. Histological clearing of both epidermis and dermis occurred in three patients, and epidermal clearing alone occurred in two. Photochemotherapy may have a place in the treatment of the early and intermediate stages of mycosis fungoides, and it may also be useful as an adjunct to other forms of treatment in the more advanced stages.
A simple, reliable, and inexpensive method is described for holding electron microscope grids during the application of photographic emulsion and during subsequent storage and processing. This method has proved to be especially useful in autoradiographic studies using serial sections.
Psoriasis is a chronic, relapsing dermatosis characterised by scaling, erythema, and less commonly pustulation. Although the clinical spectrum is broad and the nature of the underlying defect responsible for the production of psoriasis uncertain, all currently available effective remedies are capable of inhibiting epidermal mitosis and this remains the most widely accepted concept in the management of psoriasis.
The restitution of RNA synthesis in cultures progressing from metaphase into interphase (G(1)) has been investigated in synchronized HeLa S(3) cells by using inhibitors of macro-molecular synthesis and the technique of electron microscope autoradiography. The rate of incorporation of radioactive uridine into RNA approached interphase levels in the absence of renewed protein synthesis. In contrast, maintenance of this rate in G(1) was dependent upon renewed protein synthesis. Restoration of synthesis of heterogeneous nuclear RNA occurred under conditions that inhibited production of ribosomal precursor RNA. In autoradiographs of individual cells exposed to radioactive uridine, silver grains were first detected after nuclear envelope reformation at the periphery of the chromosome mass but before chromosomal decondensation. These data are consistent with the following interpretation. Multiple RNA polymerase activities persist through mitosis and are involved in the initiation of RNA synthesis in early telophase at sites on the nuclear envelope.