tetrachlorodecaoxide and Neoplasms

Extravasation of some cytostatics applied i.v. can often cause local edema with skin redness, thrombophlebitis and not infrequently skin necrosis with chronic ulcera. Local treatment is usually ineffective, and so far surgical excision of ulcera is the only curative approach. Tetrachlorodecaoxygen anion complex (TCDO) has shown high activity in healing chronic leg ulcera, by increasing pO2 in hypoxic wound tissue and stimulating phagocytosis as one of anti-inflammatory processes To study the local activity of TCDO in tissue necrosis and chronic ulcera caused by cytostatic extravasation, 23 patients with local skin complications underwent local treatment with TCDO, made as isotonic water solution. Seventeen patients experienced only local edema with redness, while 6 patients showed deep chronic ulcera. All the skin changes were complications after i.v. doxorubicin, cisplatinum, dactinomycin or vinblastine application. The treatments with TCDO followed 1-3 months after ulcera appeared, while skin inflammations were treated 1-8 days after they occurred. TCDO was applied locally twice a day by impregnated cotton tissue for 4-6 weeks. Evaluable were only measurable lesions. From 17 patients with only skin inflammation 3 patients obtained complete resolution, 8 partial resolution and 6 had stable lesions. Thus, overall response was recorded in 65% of patients (11/17). In 6 patients with deep chronic ulcera a longer treatment (6 weeks) was needed, and in 5 of them the complete epithelization and resolution occurred. One patient had a partial wound healing. No side effects of treatment were observed. The effect of locally applied TCDO in chronic ulcera seems to be preferable to surgical treatment. A controlled study will show the exact therapeutic value of this new anti-inflammatory compound.

Topics: Adult; Aged; Antineoplastic Agents; Chlorine; Clinical Trials as Topic; Extravasation of Diagnostic and Therapeutic Materials; Female; Humans; Infusions, Intravenous; Male; Middle Aged; Necrosis; Neoplasms; Oxides; Pilot Projects; Skin; Skin Ulcer; Wound Healing

The redox-active chlorite-based drug WF10 (Immunokine) was shown to have modulatory effects on both the innate and adaptive immune system in vitro and in vivo. Animal studies suggest that WF10 enhances immunity against tumors. One possible explanation for such an effect is that WF10 stimulates natural killer cell cytotoxicity against malignant cells. Here, we show that WF10 regulates human NK cell cytotoxicity in a time-dependent manner, following an S-shaped kinetic with an initial stimulation of activity followed by a decrease in activity relative to the untreated controls. WF10 does not activate NK cells on its own but co-stimulates NK cell activation mediated by different activating receptors. This is mediated by enhancing NK cell adhesion to target cells through promoting the activation of the integrin LFA-1. These data demonstrate a direct effect of WF10 on the cytotoxicity of human NK cells.

Topics: Cell Adhesion; Cell Survival; Cells, Cultured; Chlorine; Humans; Killer Cells, Natural; Lymphocyte Function-Associated Antigen-1; Neoplasms; Oxides