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  • Title: The treatment of refractory anaemia of chronic renal failure with cobalt chloride.
    Author: Duckham JM, Lee HA.
    Journal: Q J Med; 1976 Apr; 45(178):277-94. PubMed ID: 940922.
    Abstract:
    Twelve anephric patients on maintenance haemodialysis received treatment with oral enteric coated cobalt chloride 25 to 50 mg daily. The change in haemoglobin concentration, and packed cell volume, are recorded and discussed with special reference to possible toxicity and mechanism of action of cobalt. Six of eight patients who completed the first course with cobalt chloride 50 mg daily for 12 weeks showed a significant rise in haemoglobin concentration of 26 to 70 per cent and a fall to near pre-therapeutic levels when cobalt was withdrawn. Evidence of a response was present within two months of starting treatment. Four patients showed a diminution in their blood transfusion requirements and three patients experienced a definite sense of increased well-being during treatment. One patient suffered from side effects of the drug and failed to complete the study because of gastrointestinal disturbance. The improvment in haemoglobin concentration was reproducible in four patients who were given second, and in one case third courses courses with varying doses of cobalt over differing periods of time. Serum cobalt levels tended to stabilize after two months continuous treatment to the therapeutic range of 40-100 mumg per 100 ml. A rapid fall in serum cobalt was seen on cessation of treatment. It is suggested that therapy with enteric coated cobalt chloride at a dose of between 25 and 50 mg per day has a definite place in the treatment of the refractory anaemia of chronic renal failure.
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