This dissertation is the compilation of three separate works of research revolving around the theme of regulation of biomedical technologies that are either emerging or that have undergone significant developments over the past decade or so. Each of these three research works examines a legal response to a technological development in the areas of biotechnology and/or medicine and addresses one or more challenges - ethical, constitutional, legal or one that is related to public policy - created by that response. The first work of research, which was published in the Administrative Law Review in March 2008, examines the legality of the restrictions imposed by the administration of President George W. Bush on the funding of research involving human embryonic stem cells. Reaching the conclusion that the Bush Administration's actions were outright illegal in more than one way, the research highlights existing tensions in the division of decision-making power between the President and executive agencies and between Congress and the President. The second work of research, which was published in the Columbia Science and Technology Law Review in August 2010, reviews the regulation of genetic screening and testing of donated reproductive tissue in the United States. Analyzing the regulation in the federal, state and industry level, the research highlights significant shortcomings of the regulation of this area and, drawing on the experience of other countries, advocates the regulation of this area by the FDA. The third and last work of research of which this dissertation consists is dedicated to the examination of the newly created regime of statutory exclusivities afforded to biological pharmaceuticals under the Biologics Price Competition and Innovation Act (BPCIA) as it compares to the protection afforded to such products under patent law. The research concludes that allowing biological pharmaceuticals to benefits from parallel protection under both patent law and the statutory exclusivities regime established under BPCIA does not contribute to incentivizing innovation and might have undesirable ramifications from a public policy perspective. Hence, the research proposes limiting the protection afforded to biological pharmaceutical products, namely to the protection under either patent law or BPCIA, by suspending the ability to enforce patents covering biological pharmaceuticals against generic applicants under BPCIA. In addition, the research examines the proposition that under some circumstances it would be possible to substitute patent protection for statutory exclusivities.

The main objectives of the present project were to increase the understanding of small intestinal precipitation of poorly soluble pharmaceutical drugs, investigate occurrence of crystalline small intestinal precipitation and effects of precipitation on absorption. The aim was to create and evaluate methods of predicting crystalline small intestinal drug precipitation using in vivo, in vitro and in silico models. In vivo small intestinal precipitation from highly supersaturated solutions of two weakly basic model drugs, AZD0865 and mebendazole, was investigated in humans and canine models. Potential precipitation of AZD0865 was investigated by examining dose dependent increases in human maximum plasma concentration and total exposure, which turned out to be dose linear over the range investigated, indicating no significant in vivo precipitation. The small intestinal precipitation of mebendazole was investigated from drug concentrations and amount of solid drug present in dog jejunum as well as through the bioavailability after direct duodenal administration in dogs. It was concluded that mebendazole small intestinal precipitation was limited, and that intestinal supersaturation was measurable for up to 90 minutes. In vitro precipitation methods utilizing simulated or real fasted gastric and intestinal fluids were developed in order to simulate the in vivo precipitation rate. The methods overpredicted in vivo precipitation when absorption of drug was not simulated. An in vitro-in silico approach was therefore developed, where the in vitro method was used for determining the interfacial tension (γ), necessary for describing crystallization in Classical Nucleation Theory (CNT). CNT was evaluated using a third model drug, bicalutamide, and could successfully describe different parts of the crystallization process of the drug. CNT was then integrated into an in silico absorption model. The in vivo precipitation results of AZD0865 and mebendazole were well predicted by the model, but only by allowing the fundamental constant γ to vary with concentration. Thus, the in vitro-in silico approach could be used for small intestinal precipitation prediction if the in vitro concentration closely matched in vivo small intestinal concentrations.