The use of human fetal tissue for scientific research has enormous potential but is subject to government legislation. In the United Kingdom the Polkinghorne Committee's guidelines were accepted by the Department of Health in 1990. These guidelines set out to protect women undergoing termination of pregnancy from exploitation but in so doing may significantly restrict potential research. Although the committee took evidence from a wide variety of experts they did not seek the views of the general public. We asked 108 (...) women about to have a therapeutic abortion; 167 women who had had a pregnancy terminated in the past, and 419 women who had never had an abortion, their views on research using human fetal tissue. Regardless of their past experiences the women were overwhelmingly in favour of research using fetal tissue (94 per cent). They made little distinction between basic research and research with obvious clinical relevance and supported the concept of using transplanted fetal tissue for the treatment of adult disease such as Parkinsonism. Women about to undergo an abortion were significantly more likely (p < 0.001) to approve of all types of research including that aimed at improving methods of abortion and research using live fetuses in utero. (shrink)

Grafts of embryonic neural tissue into the brains of adult patients are currently being used to treat Parkinson's disease and are under serious consideration as therapy for a variety of other degenerative and traumatic disorders. This target article evaluates the use of transplants to promote recovery from brain injury and highlights the kinds of questions and problems that must be addressed before this form of therapy is routinely applied. It has been argued that neural transplantation can promote functional recovery through (...) the replacement of damaged nerve cells, the reestablishment of specific nerve pathways lost as a result of injury, the release of specific neurotransmitters, or the production of factors that promote neuronal growth. The latter two mechanisms, which need not rely on anatomical connections to the host brain, are open to examination for nonsurgical, less intrusive therapeutic use. Certain subjective judgments used to select patients who will receive grafts and in assessment of the outcome of graft therapy make it difficult to evaluate the procedure. In addition, little long-term assessment of transplant efficacy and effect has been done in nonhuman primates. Carefully controlled human studies, with multiple testing paradigms, are also needed to establish the efficacy of transplant therapy. (shrink)

Despite some clinical promise, using fetal transplants for degenerative and traumatic brain injury remains controversial and a number of issues need further attention. This response reexamines a number of questions. Issues addressed include: temporal factors relating to neural grafting, the role of behavioral experience in graft outcome, and the relationship of rebuilding of neural circuitry to functional recovery. Also discussed are organization and type of transplanted tissue, the of transplant viability, and whether transplants are really needed to obtain functional recovery (...) after brain damage. (shrink)

This commentary reviews data supporting circuitry reconstruction, replacement neurotransmitters, and trophic action as mechanisms whereby transplants promote recovery of function. Issue is taken with the thesis of Sinden et al. that adequate data exist to indicate that reconstruction of hippocampal circuitry damaged by hypoxia with CA1 transplants is a confirmed mechanism whereby these transplants produce recovery. Sinden et al.'s and Stein & Glasier's proposal that there is definitive evidence showing that all transplants produce trophic effects is also questioned.

Stein & Glasier suggest embryonic neural tissue grafts as a potential treatment strategy for Alzheimer's and Parkinson's disease. As an alternative, we suggest that the family of nerve growth factor-related neurotrophins and their trk (tyrosine kinase) receptors underlie cholinergic basal forebrain (CBF) and dopaminergic substantia nigra neuron degeneration in these diseases, respectively. Therefore, treatment approaches for these disorders could utilize neurotrophins.

In spite of Stein and Glasier's justifiable conclusion that initial optimism concerning the immediate clinical applicability of neural transplantation was premature, there exists much experimental evidence to support the potential for incorporating this procedure into a therapeutic arsenal in the future. To realize this potential will require continued evolution of our knowledge at multiple levels of the clinical and basic neurosciences.

The concept of structure, operation, and functionality, as they may be understood by clinicians or researchers using neural transplantation techniques, are briefly defined. Following Stein & Glasier, we emphasize that the question of whether an intracerebral graft is really functional should be addressed not only in terms of what such a graft does in a given brain structure, but also in terms of what it does at the level of the organism.

In lieu of an abstract, here is a brief excerpt of the content:Kennedy Institute of Ethics Journal 16.4 (2006) 379-396MuseSearchJournalsThis JournalContents[Access article in PDF]Pharmacists and Conscientious Objection *In March 2005, a Wisconsin pharmacist's act of conscience garnered headlines across the United States. After a married woman with four children submitted a prescription for the morning-after pill, the pharmacist, Neil Noesen, not only refused to fill it, but also refused to transfer the prescription to another pharmacist or to return the prescription (...) to the customer. As more such incidents occurred, many states "... decided to consider and enact laws setting the bounds of pharmacists' and other health care workers' professional obligations" (III, Grady 2006, p. 327). Discussions of objector legislation, also referred to as "conscience clauses," "refusal clauses," and "abandonment laws" (III, Appel 2005, p. 279), are not limited to professional ethics, but also draw from philosophical, theological, and legal perspectives. The purpose of this Scope Note is to present a wide variety of viewpoints on the health provider's right to conscience.More than 40 years ago the development of "The Pill" as the first reliable method of birth control not only ushered in a feminist revolution, but also provided a new focus for concerns of conscience for those who were part of the anti-abortion movement based on religious belief in the sanctity of life. Similarly, in the past ten years, worldwide, and seven years (1999) since the emergency contraception "morning after" pill first became available as a prescription item, there has been an upsurge in the number of medical personnel who refuse to prescribe or dispense it on grounds of personal conscience, whether for religious reasons or not. Their actions bring into play issues of power and control for health care personnel and for patients—in this case women, which also raises women's rights issues. Ironically, studies in France, Sweden, and the United Kingdom have shown that emergency contraception does not reduce the abortion rate—it is too infrequently used (II, Glasier 2006).It is important to underline the difference between the "morning-after" pill or "Plan B," which is made up of two progestin pills containing levonorgestrel (a synthetic derivative of the female hormone progesterone), and RU-486 (Mifiprex [End Page 379] or mifipristone with misoprostol). Plan B, if taken within 72 hours post-coitus prevents implantation, and therefore pregnancy, by suppressing the output of luteinizing hormone, the hormone that triggers the ovulation process. Scientists have been unable to determine whether this action could destroy already fertilized eggs, but even if it does, it uses the same mechanism as occurs with the birth-control pill, that was developed some 45 years ago. By contrast, RU-486 acts up to 49 days after implantation by blocking the action of progesterone in order to terminate the pregnancy and as such is an abortifacient (II, US FDA 1).On 24 August 2006, the U.S. Food and Drug Administration announced approval of the Plan B pill for over-the-counter (OTC ) sales (II, US FDA 2). Although this action makes the drug more widely available, it remains to be seen whether pharmacists who are conscientious objectors and who refuse to dispense it also will refuse to provide it OTC.A survey article by Rebecca Dresser (II, 2005, p. 9) succinctly sums up the problem for conscientious objectors: "Because emergency contraception can act to block implantation of a fertilized egg, people who believe in protection of human life after conception find it morally objectionable."When conscientious objections are raised over abortion or birth control services performed, prescribed, or dispensed, they affect not only the health professionals—physicians, pharmacists, nurses, and health technicians—who may object, as well as their colleagues and/or managers, but also the consumers: the female patients who are then forced to reconsider or to seek an alternative supplier, as well as their spouses or partners. Alta Charo (II, 2005, p. 2473) makes the point that the patient needs to have access to a system of counseling and referral "so... (shrink)

I propose a cautionary assessment of the recent debate concerning the impact of the dynamical approach on philosophical accounts of scientific explanation in the cognitive sciences and, particularly, the cognitive neurosciences. I criticize the dominant mechanistic philosophy of explanation, pointing out a number of its negative consequences: In particular, that it doesn’t do justice to the field’s diversity and stage of development, and that it fosters misguided interpretations of dynamical models’ contribution. In order to support these arguments, I analyze a (...) case study in computational neuroethology and show why it should not be understood through a mechanistic lens; I specially focus on Zednik’s mechanistic interpretation of the case study. In addition, I argue for a greater appreciation of the relation between explanation and other epistemic goals in the field, as well as an increased sensitivity towards the associated contextual factors. (shrink)

A. J. Ayer, who died in 1989, was acknowledged as one of Britain's most distinguished philosophers. In this memorial collection of essays leading Western philosophers reflect on Ayer's place in the history of philosophy and explore aspects of his thought and teaching. The volume also includes a posthumous essay by Ayer himself: 'A defence of empiricism'. These essays are undoubtedly a fitting tribute to a major figure, but the collection is not simply retrospective; rather it looks forward to present and (...) future developments in philosophical thought that Ayer's work has stimulated. (shrink)

What can--and what can't--philosophy do? What are its ethical risks--and its possible rewards? How does it differ from science? In Philosophy as a Humanistic Discipline, Bernard Williams addresses these questions and presents a striking vision of philosophy as fundamentally different from science in its aims and methods even though there is still in philosophy "something that counts as getting it right." Written with his distinctive combination of rigor, imagination, depth, and humanism, the book amply demonstrates why Williams was one of (...) the greatest philosophers of the twentieth century. Spanning his career from his first publication to one of his last lectures, the book's previously unpublished or uncollected essays address metaphysics, epistemology, and ethics, as well as the scope and limits of philosophy itself. The essays are unified by Williams's constant concern that philosophy maintain contact with the human problems that animate it in the first place. As the book's editor, A. W. Moore, writes in his introduction, the title essay is "a kind of manifesto for Williams's conception of his own life's work." It is where he most directly asks "what philosophy can and cannot contribute to the project of making sense of things"--answering that what philosophy can best help make sense of is "being human." Philosophy as a Humanistic Discipline is one of three posthumous books by Williams to be published by Princeton University Press. In the Beginning Was the Deed: Realism and Moralism in Political Argument was published in the fall of 2005. The Sense of the Past: Essays in the History of Philosophy is being published shortly after the present volume. (shrink)

This paper is devoted to computer modelling of the development and regeneration of multicellular biological structures. Some species are able to regenerate parts of their body after amputation damage, but the global rules governing cooperative cell behaviour during morphogenesis are not known. Here, we consider a simplified model organism, which consists of tissues formed around special cells that can be interpreted as stem cells. We assume that stem cells communicate with each other by a set of signals, and that the (...) values of these signals depend on the distance between cells. Thus the signal distribution characterizes location of stem cells. If the signal distribution is changed, then the difference between the initial and the current signal distribution affects the behaviour of stem cells—e.g. as a result of an amputation of a part of tissue the signal distribution changes which stimulates stem cells to migrate to new locations, appropriate for regeneration of the proper pattern. Moreover, as stem cells divide and form tissues around them, they control the form and the size of regenerating tissues. This two-level organization of the model organism, with global regulation of stem cells and local regulation of tissues, allows its reproducible development and regeneration. (shrink)

In this paper, it is explained that a dialogical approach to complex argumentation can be fruitful for solving two important problems concerning the analysis of the argumentation structure. First, such an approach makes it possible to clarify the distinction between coordinative and multiple argumentation structures, and to identify clues in the presentation for each of these structures. Second, a dialogical approach can provide a basis for dealing more adequately with refutations of counterarguments.

Chapter 5 defends a Lockean theory of territory, arguing that it avoids the unpalatable commitments of its rivals. The chapter first outlines Locke’s own view, which derives states’ territorial rights from its willing members’ private rights over land and resources. It then describes the ways in which that historical position needs to be modified to make it defensible, taking the ideal it describes to be its strong point. The chapter also describes and answers the standard objections to this sort of (...) theory. In doing so, it defends a view about the real point of philosophical theories of territory. (shrink)

Edited with New Translation by Richard McKirahan With a New Preface by Malcolm Schofield This book is a revised and expanded version of A.H. Coxon's full critical edition of the extant remains of Parmenides of Elea—the fifth-century B.C. philosopher by many considered "one of the greatest and most astonishing thinkers of all times." Coxon's presentation of the complete ancient evidence for Parmenides and his comprehensive examination of the fragments, unsurpassed to this day, have proven invaluable to our understanding of the (...) Eleatic since the book's first publication in 1986. This edition, edited by Richard McKirahan and with a new preface by Malcolm Schofield, is released on the 100th anniversary of Coxon's birth. This new edition for the first time includes English translations of the testimonia and of any Ancient Greek throughout the book, as well as an English/Greek glossary by Richard McKirahan, and revisions by the late author himself. The text consists of Coxon's collations of the relevant folios of manuscripts of Sextus Empiricus, Proclus and Simplicius and includes all extant fragments, a commentary, the testimonia, a complete list of sources, linguistic parallels from both earlier and later authors, and the fullest critical apparatus that has appeared since Diels’ _Poetarum Philosophorum Fragmenta _. The collection of testimonia includes the philosophical discussions of Parmenides by Plato, Aristotle and the Neoplatonists, most of which had been omitted by Diels. The introduction discusses the history of the text, the language and form of the poem, Parmenides’ use and understanding of the verb ‘to be’, his place in the history of earlier and later philosophy and the biographical tradition. In the commentary Coxon deals in detail with both the language and the subject matter of the poem and pays full attention to Parmenides’ account of the physical world. The appendix relates later Eleatic arguments to those of Parmenides. (shrink)

Originally published in 1969. This volume was composed by an eminent Sufi mystic whilst in prison in Baghdad, awaiting execution, in a vain attempt to overthrow his sentence; he was put to death in AD 1311 at the age of 33. This apologia is a document of great poignancy, composed in most elegant Arabic and translated with the customary skill and elegance for which A J Arberry became so well-known.

We present the first quantitative analysis of the three-dimensional microstructure of a n - n ' alloy that does not make any a priori assumptions about the n '-particle morphologies. The n '-particle size distribution is derived using the particle volumes to provide a measure of the particle sizes that is independent of particle morphology and is found to be somewhat broader and to have a lower maximum peak height than the theoretical prediction in the absence of elastic stress. Non-equiaxed (...) n ' particles are found to be approximately equally likely to have rod-like, plate-like or mixed-character morphologies. In contrast with theoretical predictions, smaller particles tend to be more non-equiaxed than larger particles. The latter two findings are a result of the attractive interparticle configurational forces induced by stress at the corners of neighbouring particles. By analysing the distribution of particle side lengths, it is concluded that the average thickness of the sheets of n '-particles is between 0.4 and 0.6 µm. (shrink)

Первое российское энциклопедическое издание, посвященное философии буддизма, является самым полным в отечественной литературе сводом знаний о буддийской философии. Его главная цель - описать философское кредо буддизма в контексте разнообразия школ.

v. 1. Indii︠a︡ -- v. 2. Blizhniĭ i Sredniĭ Vostok -- v. 3. Kitaĭ.