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PubMed2005

A revised nomenclature for mammalian acyl-CoA thioesterases/hydrolases.

Acyl-CoA thioesterases, also known as acyl-CoA hydrolases, are a group of enzymes that hydrolyze CoA esters such as acyl-CoAs (saturated, unsaturated, branched-chain), bile acid-CoAs, CoA esters of prostaglandins, etc., to the corresponding free acid and CoA. However, there is significant confusion regarding the nomenclature of these genes. In agreement with the HUGO Gene Nomenclature Committee and the Mouse Genomic Nomenclature Committee, a revised nomenclature for mammalian acyl-CoA thioesterases/hydrolases has been suggested for the 12 member family. The family root symbol is ACOT, with human genes named ACOT1-ACOT12, and rat and mouse genes named Acot1-Acot12. Several of the ACOT genes are the result of splicing events, and these splice variants are cataloged.

Alternative Splicing↗
PubMed1966

Sources of information on medical geography.

Adequate research in the peripheral field of medical geography requires familiarity with the literature of medicine, geography, and other environmentally oriented fields. The pertinent literature of the two primary disciplines, as well as that of anthropology, nutrition, and human bioclimatology, is surveyed from a bibliographical point of view. A brief review of historical sources is presented, followed by a discussion of the contemporary organizations, both international and national, active in the field. Emphasis is placed on the publishing programs and projects, maps, atlases, symposia, reports, and other literature sponsored or stimulated by these organizations. Regional bibliographical surveys for East Africa, India, and the Soviet Union are also noted. Pertinent aspects of bibliographies, indexes, abstracts, library card catalogs and accession lists, and other resources are listed, with emphasis on the various subject headings and other approaches to them. Throughout, the sources of information are approached from a multidisciplinary and interdisciplinary viewpoint.

Bibliographies as Topic↗
PubMed1995

Application of two-dimensional protein gels in biotechnology.

The optimal use of biological systems for technologically developed products will not be achieved until biological systems are completely defined in biochemical terms. Two-dimensional polyacrylamide gel electrophoresis, 2-D gels, are contributing to this goal. These gels separate complex mixtures of proteins into individual polypeptide species. The ultimate use of 2-D gels is the construction of cellular 2-D gel databases which identify the proteins on the gels and catalog their responses to different environmental conditions. In addition to these global analyses, many applications for 2-D gels in basic, applied and clinical research have been shown.

Amino Acid Sequence↗
PubMedDate not supplied

Classification and naming of dyes, stains and fluorochromes.

A classification of dyes and other colorants is proposed, based on the chemical features responsible for their visibility and generally consonant with the writings of modern color chemists. The scheme differs in several respects from that of the Colour Index (CI), but it retains some traditional small groups of dyes that include biological stains. Natural dyes, recognized as a group in the CI, are placed with or near synthetic dyes with identical or similar chromophores. The new scheme also provides categories for dyes and fluorochromes that do not have places in the CI classification. Some CI categories, including lactones, aminoketones and hydroxyketones, are not recognized in this new scheme, which is adopted in the forthcoming 10th edition of Conn's Biological Stains: a Handbook of Dyes and Fluorochromes for Use in Biology and Medicine. Some rules are also set out for the spelling of trivial names, which has long been inconsistent in scientific literature. The ending '-ine' is used for compounds derived from organic bases (e.g., fuchsine and thionine, not fuchsin or thionin), and names ending in '-in' are for compounds that are not bases or their derivatives (e.g., eosin and phloxin, not eosine or phloxine). Initial capital letters are used only for words that are names of people or places (e.g., Nile blue or Congo red) and for the 'generic' components of CI application names (as in Acid yellow 36). Other words, including trade names that have fallen into common usage are not capitalized (e.g., alcian blue, biebrich scarlet, coomassie blue). The recommended spellings of some dyes differ from those commonly seen in vendors' catalogs and in biological publications, but they are generally consistent with English and American dictionaries, with recent writings in English by color chemists, and with the trivial names of other organic compounds.

Coloring Agents↗
PubMed2004

Collaborative study for establishment of a global standard for the potency assay of human anti-D immunoglobulin.

An international collaborative study aimed at establishing a global standard for the potency assay of anti-D immunoglobulin was started in 2002. 25 laboratories participated in this study run under the common aegis of the World Health Organization, the United States Food and Drug Administration (US-FDA) and the European Directorate for the Quality of Medicines (EDQM). The potencies of three candidate materials and the US-FDA standard (lot 3) included for comparison were evaluated using AutoAnalyzer, competitive enzyme-linked immunoassay (competitive EIA), flow cytometric methods or own "in-house" methods. Critical reagent, standardised procedures and standardised assay design were provided for either method, where appropriate. Central statistical evaluation of the potency data submitted by the participants was performed using a parallel line model. Agreement between laboratories and assay methods for all samples was observed. Intra-laboratory variability was lowest for laboratories performing flow cytometry and highest for laboratories that performed their in-house methods. Inter-laboratory variability was acceptable for all samples when assayed by AutoAnalyzer, competitive (EIA) and flow cytometric methods. It was concluded that sample A is most suitable to serve as a global standard and that sample C could serve as a reserve European Pharmacopoeia (Ph. Eur.) Biological Reference Preparation (BRP) batch provided that suitable stability is demonstrated. Sample A was adopted by the Ph. Eur. Commission at its 115th session (March 2003) as the first Ph. Eur. BRP (available from the EDQM: catalog number Y0000219) with the assigned potency of 285 IU/ampoule.

Chromatography, High Pressure Liquid↗
PubMed2003

Sharing digital teaching resources: breaking down barriers by addressing the concerns of faculty members.

PURPOSE: Regional and institutional databases have been created to improve access to educational resources and to avert unnecessary duplication. The growth and success of these databases depend upon the willingness of faculty members to contribute their materials. This qualitative study seeks to identify the barriers that block the free exchange of educational multimedia and the incentives that could be created to overcome educators' concerns. METHOD: In 2001, 34 faculty members from 13 U.S. medical schools each participated in one of five focus groups. They responded to three hypothetical scenarios depicting opportunities for sharing educational resources. Participants' responses were categorized hierarchically and sent back to them for feedback. RESULTS: Participants strongly supported multimedia databases, particularly those that serve a national audience. Obstacles for contributing materials included the lack of institutional recognition for educational innovation, confusing intellectual property policies, the hassle involved in sharing materials, and the perceived commercial potential of the materials. Peer review of educational materials was seen as an important incentive. CONCLUSIONS: Medical schools could benefit from the free exchange of high-quality educational multimedia but need to address the concerns of faculty by clarifying institutional copyright rules, streamlining the donation process, and providing assistance with cataloging assets. Removing departmental pressures to commercialize materials and recognizing peer-reviewed donations as academic achievement could foster a culture of sharing.

Attitude of Health Personnel↗
PubMed2006

Quest for arthritis-causative genetic factors in the rat.

Experimental rat models of arthritis are extensively studied with a view to understand the genetic underpinnings of rheumatoid arthritis (RA). Genome scans using these models have led to the detection of arthritis regulatory quantitative trait loci (QTLs) on all but three chromosomes of the rat. Whereas some of the QTLs are model specific, others overlap between models. Some arthritis susceptibility and/or severity QTLs identified by genetic linkage analyses are corroborated by substitution mapping using congenic strains, whereas others are not. In these cases, testing alternate arthritis models proved to be useful to identify QTL effects. Nevertheless, development and testing of congenic substrains containing progressively shorter introgressed regions have not only fine mapped the location of the arthritis QTLs but also resulted in the identification of multiple QTLs within several originally identified individual QTL. Most of these studies progressed rapidly since 2001, when the rat genome sequence was published. Proof of principle for substitution mapping as a successful method for QTL gene discovery is provided by the positional cloning of Ncf1 as one of the arthritis QTLs in rats. This finding is encouraging for similar sustained dissection of all the other arthritis QTLs mapped in the rat. Identification of rat arthritis QTLs is expected to pave the way for discovery of yet-unidentified arthritis-causative genetic elements and/or pathways for RA in humans and potential development of targeted therapeutics. This review catalogs some of the recent advances made in QTL discovery projects of experimentally induced rat models of arthritis.

Animals↗
PubMed2001

Implementing a data warehouse at Inglis Innovative Services.

Data warehouses, data marts, and data mining have been hot topics in the 1990s, offering the promise of a vault of corporate data ripe for decision making. As is true with all promising technologies, the key issue is how to get started. Implementation of a corporate data warehouse involves a lot more than spending a huge amount of money on hardware, software, and consultants. Successful implementation of a data warehouse involves a corporate treasure hunt--identifying and cataloging data. It involves data ownership, data integrity, and business process analysis to determine what the data are, who owns them, how reliable they are, and how they are processed. Finally, implementation of the warehouse drives the issue of how good the decisions are that are based on the information in the warehouse. This article presents a case study of how one healthcare facility dealt with the challenges of implementing a data warehouse.

Computer Communication Networks↗
PubMed2002

Resource selection for an interdisciplinary field: a methodology.

The Health Sciences and Human Services Library of the University of Maryland developed and implemented a methodology to evaluate print and digital resources for social work. Although this methodology was devised for the interdisciplinary field of social work, the authors believe it may lend itself to resource selection in other interdisciplinary fields. The methodology was developed in response to the results of two separate surveys conducted in late 1999, which indicated improvement was needed in the library's graduate-level social work collections. Library liaisons evaluated the print collection by identifying forty-five locally relevant Library of Congress subject headings and then using these subjects or synonymous terms to compare the library's titles to collections of peer institutions, publisher catalogs, and Amazon.com. The collection also was compared to social work association bibliographies, ISI Journal Citation Reports, and major social work citation databases. An approval plan for social work books was set up to assist in identifying newly published titles. The library acquired new print and digital social work resources as a result of the evaluation, thus improving both print and digital collections for its social work constituents. Visibility of digital resources was increased by cataloging individual titles in aggregated electronic journal packages and listing each title on the library Web page.

Books↗
PubMed2000

Pregnancy after liver transplantation.

The first known posttransplantation pregnancy was in 1958 in a renal transplant recipient who had received a kidney from her identical twin sister. The first known posttransplantation pregnancy in a liver transplant recipient was in 1978. Information available from female kidney transplant recipients helped in the decision making involved in the management of this case, as well as those that followed. Over the last 20 years, issues specific to liver transplantation and pregnancy have been identified. Similar to the kidney transplant recipient population, when prepregnancy recipient graft function is stable and adequate, pregnancy appears to be well tolerated. Also similar to kidney transplant recipients, there has been no evidence of a specific malformation pattern among the children, and although prematurity and low birth weight occur, overall newborn outcomes have been favorable. Pregnancy in the setting of recurrent liver disease, such as recurrent hepatitis C, poses a potential problem among liver transplant recipients, as well as the possible adverse effects of immunosuppression on maternal kidney function. Also of significance, peripartum graft deterioration has more severe consequences in this transplant recipient population. Therefore, pregnancy must be considered carefully in this transplant recipient group. Since 1991, the National Transplantation Pregnancy Registry (NTPR) has studied the safety of pregnancy outcomes in solid-organ transplant recipients. The purpose of this review is to catalog studies in the literature, as well as to present current data from the registry with management guidelines.

Female↗
PubMedDate not supplied

Trends in the measurement of health utilities in published cost-utility analyses.

OBJECTIVE: The Panel on Cost-Effectiveness in Health and Medicine recommended the compilation of a catalog of health state utility weights for use in cost-utility analyses (CUAs), and has given methodological recommendations. This study presents an update, through 2001, to our current registry of utility weights (available at http://www.tufts-nemc.org/cearegistry; previously at http://www.hsph.harvard.edu/cearegistry), and documents recent changes in methods used for utility weight elicitation. METHODS: We searched the English-language medical literature for original CUAs reporting outcomes as cost per quality-adjusted life-year (QALY). Two trained readers independently audited each article, abstracting data on the health state descriptions, corresponding utility weights, methods of elicitation, and sources of the estimates. The utility elicitation methods from 1998 to 2001 were compared with the methods used to obtain utilities before 1998. RESULTS: We identified 306 CUAs published after 1998, reporting 1210 separate health-related utility estimates, bringing the total in our catalog to 2159 weights. Most frequently, health states pertained to the circulatory system and oncology. Methods varied substantially: 36% of authors used direct elicitation (standard gamble, time trade-off or rating scale), 23% used generic health status instruments (EQ-5D, Health Utilities Index, etc.), and 25% estimated weights based on clinical judgment. Community preferences were used in 27% of the values. Compared with pre-1998, utilities published from 1998 to 2001 were more likely to be elicited using a generic instrument, more likely elicited from community samples, and less likely derived from expert opinion, with no formally employed methodology. CONCLUSIONS: Increasingly, analysts conducting CUAs are using generic, preference-weighted instruments, and relying on community-based preferences. Our catalog of utility weights provides a useful reference tool for producers and consumers of CUAs, but also highlights the continued need for improvement in methods and transparency.

Australia↗
PubMedDate not supplied

Seven years' experience with Integra as a reconstructive tool.

The bilayered dermal substitute Integra (Integra Life Sciences Corp., Plainsboro, NJ) was developed and has been widely used as primary coverage for excised acute burns. Our take has been slightly different, finding it most useful in the management of complex soft-tissue loss and threatened extremities as the result of tendon, joint, or bone exposure. Often tasked to fill significant volume loss, we have become adept at stacked multiple-layer applications. Creative use of this material has resulted in unexpected successes with distal limb salvage; the technique takes its place beside adjacent tissue transfer, composite flaps, and vascular pedicle flaps in our burn reconstructive practice. A prospective registry (44 patients) has been kept during the past 7 years that catalogs wounds with complex soft-tissue loss treated with Integra grafts. Many of these patients were at risk of extremity loss because of exposed tendons, joints, or bone. Integra was applied after 1:1 meshing. With profound soft-tissue defects, multiple layers of Integra were serially applied 1 to 2 weeks apart for reconstitution of soft-tissue contours. Local Integra graft infections were managed by silicone unroofing followed by topical sulfamylon liquid dressings. Wounds addressed included fourth-degree burns, necrotizing fasciitis, pit-viper envenomations, and total abdominal wall avulsion in one patient after being run over by a bus. Patients generally were free of pain from their wounds during the maturation phase of the Integra neodermis. Restoration of tissue contour was significantly better when using multiple layers for deep defects. Second and third layers of Integra were successfully applied after an abbreviated first graft maturation period of 7 days. Epithelial autografts on multilayer Integra applications frequently "ghosted"; they would auto-digest to dispersed cells followed subsequently by the reappearance of a confluent epithelial layer. Final grafted skin morphology over palmar and plantar surfaces assumed the type and fingerprint pattern of the original tissues. Infections were readily visible. Early recognition kept them to easily treated circumscribed areas, which did not jeopardize the entire wound. Lengths of stay were long (range, 2-246 days) but not significantly greater than with traditional techniques. The specific reconstructive use of Integra permitted unexpected salvage of several threatened extremities by protecting exposed tendons, bones and joints. Long-term histologic examination revealed unexpected persistence of Integra collagen. Large volume loss wounds benefited from the ability to fill voids with multilayered applications.

Abdominal Injuries↗
PubMed1986

Detective magazines: pornography for the sexual sadist?

The origins of detective magazines can be traced to 17th and 18th century crime pamphlets and to 19th century periodicals that Lombroso called "really criminal newspapers." Content analysis of current detective magazines shows that their covers juxtapose erotic images with images of violence, bondage, and domination; that their articles provide lurid descriptions of murder, rape, and torture; and that they publish advertisements for weapons, burglary and car theft tools, false identification, and sexual aids. Six case histories of sexual sadists illustrate the use of these magazines as a source of fantasy material. We postulate that detective magazines may contribute to the development of sexual sadism, facilitate sadistic fantasies, and serve as training manuals and equipment catalogs for criminals. We recommend that detective magazines be considered during policy debates about media violence and pornography.

Adult↗
PubMed1976

Educational materials reviewed for AVLINE.

The need for a central source of information regarding the availability, suitability, and quality of educational materials has led to the development of AVLINE. AVLINE is a computer information service available through the MEDLARS system of the National Library of Medicine. The Association of American Medical Colleges is gathering information from faculty members concerning useful materials and is bringing together content specialists, instructional designers, and technical specialists to review these materials. Information on materials that are recommended is provided to the National Library of Medicine to be cataloged, indexed, and abstracted for ultimate listing in AVLINE. Twenty-eight percent of the material has not been recommended; the many reasons for low ratings are categorized under content quality, instructional design, and technical quality.

Audiovisual Aids↗
PubMed2002

Comparison of one-dimensional and two-dimensional gel electrophoresis as a separation tool for proteomic analysis of rat liver microsomes: cytochromes P450 and other membrane proteins.

Gel electrophoresis in combination with peptide mass fingerprinting is the method of choice for proteomic profiling of various in vitro and in vivo biological systems. In the investigation reported here we analyzed the protein composition of hepatic microsomes from untreated and phenobarbital treated rats, using one-dimensional (1-DE) and two-dimensional (2-DE) gel electrophoresis, followed by tryptic peptide mapping. To better characterize capabilities of 2-DE 1-DE with regard to microsomal membrane proteins, "ghosts" of microsomal vesicles enriched in membrane proteins were obtained and analyzed. Both 1-DE and 2-DE showed that phenobarbital induces not only cytochromes P450 2B1and 2B2 but such stress related endoplasmic reticulum proteins as protein disulfide isomerase A(3) and A(6) and 78 kDa glucose regulated protein. The analytical performance of 1-DE with regard to endoplasmic reticulum membrane proteins is incomparably greater than that of 2-DE. Twenty-two out of a total of thirty-four known to date microsomal rat membrane proteins were identified by 1-DE in combination with matrix-assisted laser desorption/ionization-mass spectrometry of in-gel digests. At the same time using various types of 2-DE, we were able to identify only three rat microsomal membrane proteins. The data presented in this manuscript clearly demonstrate that 1-DE in combination with peptide mass fingerprinting can be successfully used for cataloging proteins of the endoplasmic reticulum, and that the proteomic analysis of the subcellular organelles containing a considerable number of highly hydrophobic membrane proteins should be performed by combined application of 1-D and 2-D electrophoresis.

Animals↗
PubMed2000

Interoperability of biodiversity databases: biodiversity information on every desktop.

Data about biodiversity are either scattered in many databases or reside on paper or other media not amenable to interactive searching. The Global Biodiversity Information Facility (GBIF) is a framework for facilitating the digitization of biodiversity data and for making interoperable an as-yet-unknown number of biodiversity databases that are distributed around the globe. In concert with other existing efforts, GBIF will catalyze the completion of a Catalog of the Names of Known Organisms and will develop search engines to mine the vast quantities of biodiversity data. It will be an outstanding tool for scientists, natural resource managers, and policy-makers.

Animals↗
PubMed2004

If ontology is the solution, what is the problem?

In this paper we show the usefulness of an ontological approach for solving some problems arising in medicine. We point out the relevance of terminological ontologies for disambiguating polysemous terms, for re-organizing very large corpora and detecting possible inconsistencies and for managing a catalog of bio-medical equipments. We also put in evidence the fundamental role played by ontologies when integration and interoperability of heterogeneous knowledge sources is needed, in particular in the field of clinical guidelines and evidence-based medicine.

Biomedical Engineering↗
PubMed1998

The Internet and education in surgery.

The purpose of this review is to explain the developing role of the Internet and the World Wide Web (WWW) in promoting education in surgery. Internet sites relevant to surgery are appearing rapidly. Remote literature searches can query for surgery trials and results. Societies are using the WWW for transmission and review of publication materials. News groups interactively discuss current developments and trends. Surgeons are using personal and institutional sites to advertise services. Conventional slide shows migrate to the WWW for convenient downloading for surgeons and patients. Multimedia capabilities of the WWW expand the depth of information transmission, enabling education emanating from remote sites with narration and video depiction of procedures. These sophisticated tools can be demonstrated today with real online applications. One site facilitates surgical education using the WWW for program information, symposium coordination, links to regional subspecialty societies, residency cataloging, patient question and answer forums, and multimedia procedure descriptions. The principles of WWW communication used in this website can adapt to meet any educational need. The specialty of surgery is well suited to incorporation of online multimedia education over the Internet to follow new developments in our field.

Audiovisual Aids↗