Abstract
Development of disease-modifying therapies requires an innovative approach to drug development where novel drugs are designed to target mechanisms of interest rather than to produce preclinical effects similar to those of currently used antipsychotics. Application of such novel strategy will undoubtedly require a very deep understanding of the disease biology that is just starting to emerge. Alternatively, one may let environmental experiences of the diseased individual guide the repair process and use drugs only to facilitate the effects of experience. Such an approach would bring together functional experience that is age-, environment- and disease-dependent with the plasticity resources that may otherwise not be available. There are currently no preclinical drug–environment interaction models that can be claimed to have significant degrees of validity. Therefore, from a drug development perspective, principles that combine acute symptomatic and disease-modifying properties are clearly preferred. The question arises then how such treatments can be differentiated from those that have only symptomatic effects (i.e., most currently used antipsychotic medications). One expectation is that the former will show superior and broader efficacy (especially with longer treatment duration). Another possibility is that disease-modifying drugs will be particularly useful at the very earliest stages of the disease. Society and medical communities may not be ready yet to initiate the treatment as early as during the prodromal phase, but the situation may change by the time the science advances enough to bring a convincing case of a drug with disease-modification potential.
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The author would like to thank Drs. Thomas Appl, Ana-Lucia Rêlo, Marcel van Gaalen, Karsten Wicke, Karla Drescher and Bernhard Müller for numerous discussions of the topic of this chapter.
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Bespalov, A., Klein, C., Behl, B., Gross, G., Schoemaker, H. (2012). Development of Disease-Modifying Treatment of Schizophrenia. In: Geyer, M., Gross, G. (eds) Novel Antischizophrenia Treatments. Handbook of Experimental Pharmacology, vol 213. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-25758-2_14
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