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F Saal

Publications and source records attributed to F Saal.

58 records · Page 4Linked to original sources
PubMedDate not supplied

Comparative studies on IL-6 production status in HTLV-1 chronically infected cell lines derived from different HTLV-1 associated pathologies.

We have comparatively studied the qualitative and quantitative status of Interleukin 6 (IL-6) production in several HTLV-1 chronically infected T-cell lines derived from patients suffering either of adult-T-cell leukemia/lymphoma or of tropical spastic paraparesis (TSP). Two other HTLV-1 chronically infected cell lines, coming from healthy seropositive carriers, were also analyzed. Our results demonstrate that, independently of the origin, all these T cell lines, as compared to uninfected HTLV-1 T cell ones, which were always IL-6 non producers, synthesize and yield comparable amounts of IL-6 synthesis, he nosological origin of infecting viral strains does not seem to play a differential role on IL-6 qualitative or quantitative production parameters.

Blotting, Northern↗
PubMedDate not supplied

Effects of serotonin and melanin on in vitro HIV-1 infection.

In this article, we describe the effect of indoleamines: serotonin (5-HT) and synthetic soluble melanin, on the multiplication of HIV-1 in T4 lymphocytic cell lines. The results show that viral production is increased when infected CEM-11 cells are incubated with 5-HT (10(-7) M and 10(-8) M) for 72 hours, whereas at higher doses (10(-3) M and 10(-4) M), there is an inhibition of viral multiplication. As well, when infected CEM cells were cultured in the presence of 5-HT at 10(-4) M, during 15 days, virus production, syncytia formation and cytolytic effect were drastically inhibited. Melanin also inhibits HIV-1 cytopathic effect on MT-2 cells, without cell toxicity, at concentrations of 0.2-10 micrograms/ml. Syncytium formation and cell lysis were also blocked by melanin at concentrations of 0.1 to 10 micrograms/ml, when uninfected MT-2 cells were mixed with HIV-1 chronically infected CEM-11 cells.

Antiviral Agents↗