Ethiopian visceral leishmaniasis patients co-infected with human immunodeficiency virus.

This communication reports 7 Ethiopian visceral leishmaniasis (VL) patients co-infected with human immunodeficiency virus (HIV). The clinical and laboratory findings in 6 patients did not differ from classical VL. All patients had highly elevated anti-leishmanial antibody titres, determined by immunoglobulin G-based enzyme-linked immunosorbent assay; they most probably acquired the Leishmania infection before HIV.

Phenotype and cytokine expression of intralesional cells in borderline leprosy.

We studied the cytokine profiles and cellular compositions in the lesions of borderline lepromatous (BL) and borderline tuberculoid (BT) leprosy patients in order to ascertain the immunological distinctions between these two groups. Using a modified, reliable, noninvasive, suction-induced blister technique to sample lesions, we determined that CD4+ T cells predominated in BT lesions; whereas CD8+ T cells predominated in BL lesions. However, the numbers of CD8+ per mm2 surface area of the lesion did not differ significantly between the two patient groups.

Mononuclear cell subpopulations and cytokine levels in human visceral leishmaniasis before and after chemotherapy.

Serum cytokine levels and mononuclear cell subpopulations in the spleen and peripheral blood of patients with visceral leishmaniasis before and after antimony therapy were analyzed. The percentages of activated monocytes/macrophages, T cells, and possibly B cells; of gamma/delta T cell receptor (TCR)-bearing T cells; of CD4- CD8- alpha/beta TCR-bearing T cells; and serum levels of tumor necrosis factor-alpha (TNF alpha), interferon-gamma (IFN-gamma), and interleukin-6 (IL-6) were high in patients with active visceral leishmaniasis. The proportion of both helper and suppressor CD4+ cells and of cells with NK and cytotoxic T phenotypes were depressed.

Purification and properties of a new ribosome-inactivating protein with RNA N-glycosidase activity suitable for immunotoxin preparation from the seeds of Momordica cochinchinensis.

A ribosome-inactivating protein similar to those already known (Stirpe and Barbieri (1986) FEBS Lett. 195, 1-8) was purified from the seeds of Momordica cochinchinensis. This protein, for which the name of momorcochin-S is proposed, is a glycoprotein, has an Mr of approx.