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Comments on Brain Tissue Transplantation Without Immunosuppression-Reply

Curt R. Freed, MD; Robert E. Breeze, MD; Neil L. Rosenberg, MD
Arch Neurol. 1991;48(3):260-262. doi:10.1001/archneur.1991.00530150027011
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In Reply.  —Freed and Poltorak raise several points about the technique and therapeutic strategy that we used for the implant of human fetal dopamine cells into the brain of a patient with Parkinson's disease. We disagree with most of their comments for the reasons listed below.The most basic concern of Freed and Poltorak focused on our decision not to immunosuppress the patient. As we say in the article, the value of immunosuppression is one of the most important questions to be answered for fetal cell implants in man. If research in animals had shown immunosuppression to be necessary or if immunosuppression were free of complications and cost nothing to administer, then we would have immunosuppressed the patient. In fact, experiments in rats and monkeys indicate that immunosuppression may not be needed for successful fetal tissue implants in brain. Immunosuppression also carries a 1% to 10% risk of serious infection

REFERENCES

Freed CR, Richards JB, Hutt CJ, Kriek EH, Reite ML.  Rejection of fetal substantia nigra allografts in monkeys with MPTP-induced Parkinson's syndrome . Soc Neurosci Abstr . 1988;;14:9. Abstract 7.7.
Freed CR, Richards JB, Sabol KE, Reite ML.  Fetal substantia nigra transplants lead to dopamine cell replacement and behavioral improvement in Bonnet monkeys with MPTP induced Parkinsonism . In: Beart PM, Woodruff G, Jackson DM, eds. Pharmacology and Functional Regulation of Dopaminergic Neurons . New York, NY: Macmillan Press; 1988;:353.
Lindvall O, Rehncrona S, Brundin P, Gustavii B, et al.  Human fetal dopamine neurons grafted into the striatum in two patients with severe Parkinson's disease . Arch Neurol . 1989;;46:615-631.
Lindvall O, Brundin P, Widner H, et al.  Grafts of fetal dopamine neurons survive and improve motor function in Parkinson's disease . Science . 1990;;247:574-577.
Kawamoto JC, Barrett JN.  Cryopreservation of primary neurons for tissue culture . Brain Res . 1986;;384:84-93.

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Freed CR, Richards JB, Hutt CJ, Kriek EH, Reite ML.  Rejection of fetal substantia nigra allografts in monkeys with MPTP-induced Parkinson's syndrome . Soc Neurosci Abstr . 1988;;14:9. Abstract 7.7.
Freed CR, Richards JB, Sabol KE, Reite ML.  Fetal substantia nigra transplants lead to dopamine cell replacement and behavioral improvement in Bonnet monkeys with MPTP induced Parkinsonism . In: Beart PM, Woodruff G, Jackson DM, eds. Pharmacology and Functional Regulation of Dopaminergic Neurons . New York, NY: Macmillan Press; 1988;:353.
Lindvall O, Rehncrona S, Brundin P, Gustavii B, et al.  Human fetal dopamine neurons grafted into the striatum in two patients with severe Parkinson's disease . Arch Neurol . 1989;;46:615-631.
Lindvall O, Brundin P, Widner H, et al.  Grafts of fetal dopamine neurons survive and improve motor function in Parkinson's disease . Science . 1990;;247:574-577.
Kawamoto JC, Barrett JN.  Cryopreservation of primary neurons for tissue culture . Brain Res . 1986;;384:84-93.

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