Intervertebral disc regeneration or repair with biomaterials and stem cell therapy--feasible or fiction?

The "gold standard" for treatment of intervertebral disc herniations and degenerated discs is still spinal fusion, corresponding to the saying "no disc - no pain". Mechanical prostheses, which are currently implanted, do only have medium outcome success and have relatively high re-operation rates. Here, we discuss some of the biological intervertebral disc replacement approaches, which can be subdivided into at least two classes in accordance to the two different tissue types, the nucleus pulposus (NP) and the annulus fibrosus (AF). On the side of NP replacement hydrogels have been extensively tested in vitro and in vivo. However, these gels are usually a trade-off between cell biocompatibility and load-bearing capacity, hydrogels which fulfill both are still lacking. On the side of AF repair much less is known and the question of the anchoring of implants is still to be addressed. New hope for cell therapy comes from developmental biology investigations on the existence of intervertebral disc progenitor cells, which would be an ideal cell source for cell therapy. Also notochordal cells (remnants of the embryonic notochord) have been recently pushed back into focus since these cells have regenerative potential and can activate disc cells. Growth factor treatment and molecular therapies could be less problematic. The biological solutions for NP and AF replacement are still more fiction than fact. However, tissue engineering just scratched the tip of the iceberg, more satisfying solutions are yet to be added to the biomedical pipeline.

Representations of the Human/ Nonhuman Primate Divide: the Influence of Science, Fiction, and Science-Fiction on the Concept of 'Being Human'

For as far back as human history can be traced, mankind has questioned what it means to be human. One of the most common approaches throughout Western culture's intellectual tradition in attempts to answering this question has been to compare humans with or against other animals. I argue that it was not until Charles Darwin's publication of The Descent of Man and Selection in Relation to Sex (1871) that Western culture was forced to seriously consider human identity in relation to the human/ nonhuman primate line. Since no thinker prior to Charles Darwin had caused such an identity crisis in Western thought, this interdisciplinary analysis of the history of how the human/ nonhuman primate line has been understood focuses on the reciprocal relationship of popular culture and scientific representations from 1871 to the Human Genome Consortium in 2000. Focusing on the concept coined as the "Darwin-Müller debate," representations of the human/ nonhuman primate line are traced through themes of language, intelligence, and claims of variation throughout the popular texts: Descent of Man, The Jungle Books (1894), Tarzan of the Apes (1914), and Planet of the Apes (1963). Additional themes such as the nature versus nurture debate and other comparative phenotypic attributes commonly used for comparison between man and apes are also analyzed. Such popular culture representations are compared with related or influential scientific research during the respective time period of each text to shed light on the reciprocal nature of Western intellectual tradition, popular notions of the human/ nonhuman primate line, and the development of the field of primatology. Ultimately this thesis shows that the Darwin-Müller debate is indeterminable, and such a lack of resolution makes man uncomfortable. Man's unsettled response and desire for self-knowledge further facilitates a continued search for answers to human identity. As the Human Genome Project has led to the rise of new debates, and primate research has become less anthropocentric over time, the mysteries of man's future have become more concerning than the questions of our past. The human/ nonhuman primate line is reduced to a 1% difference, and new debates have begun to overshadow the Darwin-Müller debate. In conclusion, I argue that human identity is best represented through the metaphor of evolution: both have an unknown beginning, both have an indeterminable future with no definite end, and like a species under the influence of evolution, what it means to be human is a constant, indeterminable process of change.

Gothic Taste and Russian Culture of the 18th Century

This project was an experiment in widening the traditional borders of study in the field and looking at the phenomenon of Gothic taste in many genres and kinds of art. The Gothic taste was a major element in the cultural image of the Enlightenment both in western Europe and in Russia. It was an essential component in the world outlook of an educated person and without studying this phenomenon it is impossible to fully understand the thinking of artistic professionals, amateurs and users in Russian society in the 18th century. Mr. Khatchatourov first analysed the reasons for the importance of Gothic taste in the culture of the European Enlightenment and then studied its linguistic and lexicographic evolution in 18th century Russian culture. He sought to determine the semantic context which actively formed the human mind set in the Enlightenment, including potential users and producers of articles in the Gothic taste. He then looked at the process of absorption of this concept by those forms of art which express it most strongly, in particular architecture and the theatre. His study was based on a comprehensive historical and culturological study using a wide range of sources, a formal stylistic method approach considering the interaction of non-classical styles of the Enlightenment with the dominant classicism, and an iconographic approach which revealed the essential aspects in a new image synthesis of the culture of the Enlightenment.

"Fact versus Fiction – How paratextual information shapes our reading processes"

Our life is full of stories: some of them depict real-life events and were reported, e.g. in the daily news or in autobiographies, whereas other stories, as often presented to us in movies and novels, are fictional. However, we have only little insights in the neurocognitive processes underlying the reading of factual as compared to fictional contents. We investigated the neurocognitive effects of reading short narratives, labeled to be either factual or fictional. Reading in a factual mode engaged an activation pattern suggesting an action-based reconstruction of the events depicted in a story. This process seems to be past-oriented and leads to shorter reaction times at the behavioral level. In contrast, the brain activation patterns corresponding to reading fiction seem to reflect a constructive simulation of what might have happened. This is in line with studies on imagination of possible past or future events.

Science & Fiction: Imagination und Realität des Weltraums

Der Kosmos ist seit Menschengedenken ein Gegenstand der forschenden Neugierde und der phantastischen Projektion. Wissenschaft und Kunst, science and fiction, Realität und Fiktion, sind sich nie so nah wie angesichts des Weltraums, jenes unerreichbaren Ganzen. Astronom / innen und Weltraumingenieur/innen beschäftigen space artists, und umgekehrt schöpfen Schriftsteller/innen und Filmemacher/innen aus den Entdeckungen der Physik und Weltraumtechnik. Der Leitgedanke der diesem Band zugrunde liegenden Ringvorlesung Science & ­Fiction: Imagination und Realität des Weltraums war, die Weltraumexploration im weitesten Sinne kulturgeschichtlich zu verstehen, um alle Wissenschaften in das Thema einzubeziehen. Es wurden daher sowohl Naturwissenschaftler/innen als auch ebenso viele Geisteswissenschaftler/innen eingeladen. Sie beleuchten in ihren Beiträgen die Geschichte der wissenschaftlichen, technischen und künstlerischen Visualisierungen des Weltraums und stellen Ergebnisse und Projekte der Weltraumforschung vor. Ein besonderes Interesse liegt dabei auf den vielfältigen Beziehungen zwischen den Bereichen der fiction – der Visualisierungen und Imaginationen des Weltraums – und der science – der Realitäten der naturwissenschaftlichen Erforschung des Weltraums.