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PubMed2003

The orthopaedic profession and industry: conflict or convergence of interests.

Many improvements in orthopaedic care have been enabled by the relationship that exists between the orthopaedic profession and the orthopaedic industry. This relationship is multifactorial and includes new technology development, medical education, orthopaedic research, and patient education. Acting individually and collectively, the profession and the industry advance their standing by focusing on improved patient care. Although the industry, the profession, and the patient have many shared interests, they also may have real or potential conflicts of interests. The patient's interest in the quality of treatment outcome is shared by the profession and industry. However, the interests of the profession may include issues related to the success of their practices, management of their time, and advancement of their skills. Industry's interests, in turn, include the support of their customers and the success of their businesses. Conflicts of interest between these parties are potentially neither avoidable nor undesirable. Managed well, the relationship of the orthopaedic profession and the industry achieves the goals of each while advancing patient care. As the profession and the industry each experience change, continued attention should be directed to ensuring that the interest of each is advanced only in the context of serving the interest of the patient with musculoskeletal disorders.

Access to Information↗
PubMed2003

The advance of technology and the scientific commons.

The advance of technology proceeds through an evolutionary process, with many different new departures in competition with each other and with prevailing practice, and with ex-post selection determining the winners and losers. In modern times what gives power to the process is the strong base of scientific and technological understanding and technique that guides the efforts of those seeking to advance the technology. Most of that base is part of a commons open to all who have expertise in a field. The proprietary aspects of technology traditionally have comprised a small topping on the commons. But recently parts of the commons have become privatized. While the justification for the policies and actions that have spurred privatization of the commons is that this will spur technological progress, the argument here is that the result can be just the opposite.

Information Dissemination↗
PubMed2003

Biomimetic modelling.

Biomimetics is seen as a path from biology to engineering. The only path from engineering to biology in current use is the application of engineering concepts and models to biological systems. However, there is another pathway: the verification of biological mechanisms by manufacture, leading to an iterative process between biology and engineering in which the new understanding that the engineering implementation of a biological system can bring is fed back into biology, allowing a more complete and certain understanding and the possibility of further revelations for application in engineering. This is a pathway as yet unformalized, and one that offers the possibility that engineers can also be scientists.

Biomimetics↗
PubMed2005

Translational molecular imaging for cancer.

Although most clinical diagnostic imaging studies employ anatomic techniques such as computed tomography (CT) and magnetic resonance (MR) imaging, much of radiology research currently focuses on adapting these conventional methods to physiologic imaging as well as on introducing new techniques and probes for studying processes at the cellular and molecular levels in vivo, i.e. molecular imaging. Molecular imaging promises to provide new methods for the early detection of cancer and support for personalized cancer therapy. Although molecular imaging has been practiced in various incarnations for over 20 years in the context of nuclear medicine, other imaging modalities have only recently been applied to the noninvasive assessment of physiology and molecular events. Nevertheless, there has been sufficient experience with specifically targeted contrast agents and high-resolution techniques for MR imaging and other modalities that we must begin moving these new technologies from the laboratory to the clinic. This brief review outlines several of the more promising areas of pursuit in molecular imaging for oncology with an emphasis on those that show the most immediate likelihood for clinical translation.

Animals↗
PubMed2003

Changes in gene expression in Arabidopsis shoots during phosphate starvation and the potential for developing smart plants.

Our aim was to generate and prove the concept of "smart" plants to monitor plant phosphorus (P) status in Arabidopsis. Smart plants can be genetically engineered by transformation with a construct containing the promoter of a gene up-regulated specifically by P starvation in an accessible tissue upstream of a marker gene such as beta-glucuronidase (GUS). First, using microarrays, we identified genes whose expression changed more than 2.5-fold in shoots of plants growing hydroponically when P, but not N or K, was withheld from the nutrient solution. The transient changes in gene expression occurring immediately (4 h) after P withdrawal were highly variable, and many nonspecific, shock-induced genes were up-regulated during this period. However, two common putative cis-regulatory elements (a PHO-like element and a TATA box-like element) were present significantly more often in the promoters of genes whose expression increased 4 h after the withdrawal of P compared with their general occurrence in the promoters of all genes represented on the microarray. Surprisingly, the expression of only four genes differed between shoots of P-starved and -replete plants 28 h after P was withdrawn. This lull in differential gene expression preceded the differential expression of a new group of 61 genes 100 h after withdrawing P. A literature survey indicated that the expression of many of these "late" genes responded specifically to P starvation. Shoots had reduced P after 100 h, but growth was unaffected. The expression of SQD1, a gene involved in the synthesis of sulfolipids, responded specifically to P starvation and was increased 100 h after withdrawing P. Leaves of Arabidopsis bearing a SQD1::GUS construct showed increased GUS activity after P withdrawal, which was detectable before P starvation limited growth. Hence, smart plants can monitor plant P status. Transferring this technology to crops would allow precision management of P fertilization, thereby maintaining yields while reducing costs, conserving natural resources, and preventing pollution.

Arabidopsis↗
PubMed2004

Arabidopsis to rice. Applying knowledge from a weed to enhance our understanding of a crop species.

Although Arabidopsis is well established as the premiere model species in plant biology, rice (Oryza sativa) is moving up fast as the second-best model organism. In addition to the availability of large sets of genetic, molecular, and genomic resources, two features make rice attractive as a model species: it represents the taxonomically distinct monocots and is a crop species. Plant structural genomics was pioneered on a genome-scale in Arabidopsis and the lessons learned from these efforts were not lost on rice. Indeed, the sequence and annotation of the rice genome has been greatly accelerated by method improvements made in Arabidopsis. For example, the value of full-length cDNA clones and deep expressed sequence tag resources, obtained in Arabidopsis primarily after release of the complete genome, has been recognized by the rice genomics community. For rice >250,000 expressed sequence tags and 28,000 full-length cDNA sequences are available prior to the completion of the genome sequence. With respect to tools for Arabidopsis functional genomics, deep sequence-tagged lines, inexpensive spotted oligonucleotide arrays, and a near-complete whole genome Affymetrix array are publicly available. The development of similar functional genomics resources for rice is in progress that for the most part has been more streamlined based on lessons learned from Arabidopsis. Genomic resource development has been essential to set the stage for hypothesis-driven research, and Arabidopsis continues to provide paradigms for testing in rice to assess function across taxonomic divisions and in a crop species.

Arabidopsis↗
PubMed2004

TILLING. Traditional mutagenesis meets functional genomics.

Most of the genes of an organism are known from sequence, but most of the phenotypes are obscure. Thus, reverse genetics has become an important goal for many biologists. However, reverse-genetic methodologies are not similarly applicable to all organisms. In the general strategy for reverse genetics that we call TILLING (for Targeting Induced Local Lesions in Genomes), traditional chemical mutagenesis is followed by high-throughput screening for point mutations. TILLING promises to be generally applicable. Furthermore, because TILLING does not involve transgenic modifications, it is attractive not only for functional genomics but also for agricultural applications. Here, we present an overview of the status of TILLING methodology, including Ecotilling, which entails detection of natural variation. We describe public TILLING efforts in Arabidopsis and other organisms, including maize (Zea mays) and zebrafish. We conclude that TILLING, a technology developed in plants, is rapidly being adopted in other systems.

Agriculture↗
PubMed2004

Beyond Arabidopsis. Translational biology meets evolutionary developmental biology.

Developmental processes shape plant morphologies, which constitute important adaptive traits selected for during evolution. Identifying the genes that act in developmental pathways and determining how they are modified during evolution is the focus of the field of evolutionary developmental biology, or evo-devo. Knowledge of genetic pathways in the plant model Arabidopsis serves as the starting point for investigating how the toolkit of developmental pathways has been used and reused to form different plant body plans. One productive approach is to identify genes in other species that are orthologous to genes known to control developmental pathways in Arabidopsis and then determine what changes have occurred in the protein coding sequence or in the gene's expression to produce an altered morphology. A second approach relies on natural variation among wild populations or crop plants. Natural variation can be exploited to identify quantitative trait loci that underlie important developmental traits and, thus, define those genes that are responsible for adaptive changes. The possibility of applying comparative genomics approaches to Arabidopsis and related species promises profound new insights into the interplay of evolution and development.

Arabidopsis↗
PubMed1998

The globalization of crystallographic knowledge.

The rapid growth of the World Wide Web provides major new opportunities for distributed databases, especially in macromolecular science. A new generation of technology, based on structured documents (SD), is being developed which will integrate documents and data in a seamless manner. This offers experimentalists the chance to publish and archive high-quality data from any discipline. Data and documents from different disciplines can be combined and searched using technology such as eXtensible Markup Language (XML) and its associated support for hypermedia (XLL), metadata (RDF) and stylesheets (XSL). Opportunities in crystallography and related disciplines are described.

Crystallography↗
PubMed1997

Robots in space into the 21st century.

Describes the technological developments which are establishing the foundation for an exciting era of in situ exploration missions to planets, comets and asteroids with advanced robotic systems. Also outlines important concurrent terrestrial applications and spinoffs of the space robotics technology. These include high-precision robotic manipulators for microsurgical operations and dexterous arm control systems.

Electronics↗
PubMed1994

The market and health sector reform.

A new international orthodoxy has developed on health sector reform. The dominant theme of the orthodoxy is the alleged benefits of market style reforms for health development. This is shaping changes formulated, and being implemented, in the British NHS and other European health services (including Central and Eastern Europe), Latin America and a number of developing health systems in Africa and Asia. Sets out a ten-point description of the orthodoxy. Contends that the orthodoxy is showing distinct signs of restricting the analysis and development of health management and planning. This is a matter for considerable concern as the adoption of market-style reforms can generate unforeseen and, in some cases, negative consequences. There is clearly a need for strengthening management research and development as a basis for effective health sector reform.

Consumer Behavior↗
PubMedDate not supplied

From tanks to tumors.

"Tanks to Tumors" succeeded in bringing several different communities together--medical, military, academic, industrial, and engineering. They worked together in panels to determine how the United States might adopt thermal imaging diagnostic technology in an orderly and demonstrable way for the early detection of breast cancer and other conditions. The panel recommendations will serve to guide the transition of military technology developments in ATR, the VDL, and IR sensors to the civilian medical community. The result will be a new tool in the war against breast cancer--a major benefit to the military and civilian population. A CD of the workshop proceedings is available at no cost through Advanced Concepts Analysis, Falls Church, Virginia; +1 703 914 9237; e-mail: diakides@erols.com.

Breast Neoplasms↗