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At least 811 records · Page 45Linked to original sources
PubMed2003

Modeling and implementing a health information provider on the Internet.

OBJECTIVES: To model and implement a medical web portal providing access to well qualified and high-quality information. MATERIAL AND METHODS: The Unified Medical Language System (UMLS) knowledge sources of the U.S. National Library of Medicine and an Information Sources Catalog (ISC) resulting from the ARIANE project are described. The XML technology that allows files transformations by the means of XSLT is briefly presented. RESULTS: The design and implementation of software modules that exploit knowledge sources, operate the translation of a user's query to selected information sources, and wrap obtained results are detailed. DISCUSSION: Current implementation and wrapping perspectives are discussed in terms of integration and interoperability of health information resources.

Humans↗
PubMed2006

[Post-delivery care after episiotomy].

OBJECTIVES: Attempt to define the most appropriate care after an episiotomy, the best-suited treatments of the pain of episiotomy, and examine the course of repair stitches. MATERIAL AND METHODS: A survey of the literature found on Medline and on the Cochrane Library between 1990 and 2005, and dealing with these questions was carried out. RESULTS: As regards local care, the best possible personal hygiene is a key to healing, but no specific treatment has been accepted. The treatment of pain by non-medical means as well as topically is not very efficient. Nonsteroidal antiinflammatory drugs were the most studied among medical treatments and have shown an effect on pain (whether per os or by rectal route), some of them can be used during maternal breastfeeding. Acetaminophen has not been sufficiently studied to assess its effectiveness. CONCLUSION: The medical staff must emphasize the importance of self care and personal hygiene. The pain of episiotomy is a crucial element to treat, and it is most effectively done medically. The treatment must be adapted to each patient depending on her tolerance and whether she is breastfeeding or not.

Adult↗
PubMedDate not supplied

Juggling demands: Canadian health aid to Latin America since World War II.

BACKGROUND: Since the development of the Commonwealth's 1950 Colombo Plan (Canada's first official aid program), health-related development assistance has been an important instrument of Canadian foreign policy, allowing it to gain a presence in a range of countries and help to shape international affairs. This pattern is evident in the history of Canadian multilateral and bilateral health aid to Latin America. METHODS: This analysis draws on historical material from the Departments of External Affairs and National Health and Welfare held at the Library and National Archives of Canada regarding Canadian involvement with the Pan American Health Organization (PAHO), and program information from the Canadian International Development Agency's (CIDA) Corporate Reporting Services Group. FINDINGS: Canada was initially a tentative player in the region. However, as Canadian foreign policy interests shifted towards the region in the 1970s, Canada used both multilateral and bilateral health aid to establish a presence in Latin America that was independent from, yet unthreatening to, United States hegemony in the region. CONCLUSION: The impact of Canada's provision of health aid to Latin America via PAHO and CIDA has been largely symbolic, allowing Canada to pursue an independent foreign policy in the region and to foster a positive international image for itself with minimal spending.

Canada↗
PubMed1997

mMaspin: the mouse homolog of a human tumor suppressor gene inhibits mammary tumor invasion and motility.

BACKGROUND: The human maspin gene encodes a protein in the serine proteinase inhibitor (serpin) family with tumor-suppressing functions in cell culture and in nude mice. In order to examine the role of maspin in an intact mammal, we cloned and sequenced the cDNA of mouse maspin. The recombinant protein was produced and its activity in cell culture was assessed. MATERIALS AND METHODS: Mouse maspin (mMaspin) was cloned by screening a mouse mammary gland cDNA library with the human maspin cDNA probe. Northern blot analysis was used to examine the expression patterns in mouse tissues, mammary epithelial cells, and carcinomas. Recombinant mMaspin protein was produced in E. coli. Invasion and motility assays were used to assess the biological function of mMaspin. RESULTS: mMaspin is 89% homologous with human maspin at the amino acid level. Like its human homolog, mMaspin is expressed in normal mouse mammary epithelial cells and down-regulated in mouse breast tumor cell lines. The expression is altered at different developmental stages in mammary gland. Addition of the recombinant mMaspin protein to mouse tumor cells was shown to inhibit invasion in a dose-dependent manner. As with the human protein, recombinant mMaspin protein also inhibited mouse mammary tumor motility. Deletion in the putative mMaspin reactive site loop (RSL) region resulted in the loss of its inhibitory functions. CONCLUSIONS: mMaspin is the mouse homolog of a human tumor suppressor gene. The expression of mMaspin is down-regulated in tumor cells and is altered at different developmental stages of mammary gland. mMaspin has inhibitory properties similar to those of human maspin in cell culture, suggesting that the homologous proteins play similar physiological roles in vivo.

Amino Acid Sequence↗
PubMed1997

[1910-1911, a crucial biennium in the history of the Asociación Española de Urología (I). How our association was born].

Although the background and major details concerning the events that in 1911 culminated with the creation of the Spanish Association of Urology are well known as they have been published earlier in several papers, until now and as far as we know, no paper had presented the dates and particulars of the preparatory and constituent meetings of the Society, the first Regulations, and the semblance and biographies of the project's main inspirators and initiators. This article, prepared with abundant material from newspapers and literature of the period, extricated from the resources of the National Library and the archives of the Royal Academy of Medicine in Madrid, uncovers some unpublished data on the foundation and its advocates, and rediscovers other that although published in journals at the beginning of the century, remained forgotten or were unknown for most urologists. In this way, we complete the history of a part of our past, perhaps the most interesting one, and that of its main players.

Constitution and Bylaws↗
PubMed1998

[Chromosome assignment of a novel microsatellite polymorphic marker (D14S1435) by fluorescence in situ hybridization].

OBJECTIVE: Chromosome assignment of a novel microsatellite marker (D14S1435) containing CA repeats and showing 11 alleles and 0.85 of PIC value in Chinese population) isolated from microdissected human chromosome 14q24.3 DNA library by fluorescence in situ hybridization(FISH). METHODS: The polymorphic marker was used as probe to screen a human Lambda/DASH genome library, a positive clone was isolated and the recombinant phage DNA was extracted as primary material. The insert was recovered through BamH I digestion to complete and low melting point agarose gel electro- phoresis, after processed with Sau3A I the probe was prepared by linker- catch PCR method and the following fluorescence in situ hybridization(FISH) was conducted to metaphase chromosomes. RESULTS: this novel STR was precisely mapped to human chromosome 14q24.3, and this demonstrated the validity of isolating chromosome band-specific genetic markers from probe pool made by chromosome microdissection. CONCLUSION: Confirmed by chromosome fluorescence in situ hybridization, the novel STR obtained by chromosome microdissection, PCR and subcloning method was really from the micro- dissected region. This not only increases the numbers of genetic markers used for linkage analysis in the region,but also provides a novel valuable genetic marker for the gene diagnosis and gene cloning of the possible disease-causing genes located in the region of 14q24.3.

Chromosome Mapping↗
PubMed2005

Activation analysis of concrete and graphite in the experimental reactor RUS.

The decommissioning and dismantling of nuclear installations after their service life involves the necessary disassembling, handling and disposing of a large amount of radioactive equipment and structures. In particular, the concrete that has been used as a biological reactor shield and graphite that has been used as a moderator-reflector represent the majority of waste, requiring geological disposal. To reduce this undesirable volume to the minimum and to successfully plan the dismantling and disposal of radioactive materials to storage facilities, the activations of the structures should be accurately evaluated. In the framework of the decommissioning and the dismantling of the experimental reactor of the University of Strasbourg, detailed activation estimates have been conducted to characterise the graphite and the structural materials present in the reactor environment. For this purpose, the chemical compositions of fresh graphite samples and different types of concrete have been determined by activation analysis in the research reactors OSIRIS and ORPHEE of CEA Saclay (France). Then, the activations of graphite, concrete and other materials have been calculated in the whole reactor, as a function of the three main nuclear data libraries, i.e. ENDF, JEF and JENDL. In parallel, the activations of representative graphite and concrete samples have been measured experimentally. The comparison of theoretical predictions with experimental values validates the approach and the methodology used in the present study and tests the consistency and the reliability of the nuclear data used for activation analysis. We believe that a similar approach could also be used for the decommissioning of industrial nuclear reactors.

Algorithms↗
PubMed1993

Efficiency of various strategies and materials to generate new markers: saturating the region 5q11.2-q13.3 with 30 new randomly distributed clones.

Several different strategies and materials were used for saturating the region 5q11.2-q13.3 with new, randomly distributed markers: isolation of human clones from three chromosome-5-specific libraries (a BssHII endclone phage library from the somatic cell hybrid H64 and two total genomic phage libraries from radiation hybrids IH12 and IH132), as well as Alu-PCR from chromosome-5-specific radiation hybrids with overlapping fragments in the region around the spinal muscular atrophy locus, followed either by direct isolation of Alu-PCR products or hybridization of Alu-PCR products to chromosome-5-gridded cosmid libraries. 253 human phage and cosmid clones were mapped to various parts of chromosome 5 by deletion mapping to somatic cell hybrid panels. 30 of these clones were mapped into the region 5q11.2-q13.3, 9 of which are flanking rate cutting BssHII-sites, known to be, often, starting points for genes. They represent excellent starting material for the development of new polymorphic markers and sequence-tagged sites, for YAC screening and building of contigs, as well as for direct isolation of genes.

Animals↗
PubMed2004

RACE and RAGE cloning in parasitic microbial eukaryotes.

Many gene-cloning strategies and gene survey often provide partial sequence data. To exploit the information from these partial sequences numerous PCR-based approaches have been developed to clone full-length open reading frames. These approaches can be successful using small quantities of cDNA or genomic DNA as starting material and avoid the need to go through the complex and tedious process of constructing and screening gene libraries. Here we present two of these approaches, called RACE and RAGE, we used to successfully clone partial and full-length ORFs from amitochondriate parasitic microbial eukaryotes. The RACE approach uses cDNA as template for PCR cloning whereas RAGE uses genomic DNA. These two approaches were used to complement each other to provide full-length genes. The amitochondriate microbial eukaryotes we are investigating are of interest from both evolutionary and biomedical perspectives. We have investigated genes of mitochondrial origins in the obligate intracellular parasite called microsporidia. In these organisms spores are the only source of material that can be isolated from host cells and typically yield small amount of mRNA and genomic DNA for cloning. A full-length mitochondrial Hsp70 could be cloned and sequenced and specific antibody raised against a fusion protein. The highly specific antibody allowed us to demonstrate for the first time the presence of mitochondrial-like organelles in microsporidia.

Animals↗
PubMed1981

[Theoretical frame of reference for the establishment of an international health information network].

This article discusses the principal problems of health information systems. It describes the benefits that would accrue from the adoption of a new policy for the organization of medical libraries based on the principles of selectivity and exchanges of resources in order to make library services more cost-effective. It describes how this cost-effectiveness can be achieved not only in a single library but in an entire health information network. It is also shown how a basic collection can be assembled by having the material selected by a group of experts, and by selection based on the frequency of references to different works. Finally, the author enumerates what he regards as the basic requirements for the success of information systems, among them the identification and acquisition of appropriate technology for the circulation, maintenance and use of the material, training for the personnel of the inter-change network, the education of users, and the establishment of a sound financial structure.

Cost-Benefit Analysis↗
PubMed2004

Synthesis and high-throughput screening of N-acetyl-beta-hexosaminidase inhibitor libraries targeting osteoarthritis.

C1 Nitrogen iminocyclitols are potent inhibitors of N-acetyl-beta-hexosaminidases. Given hexosaminidases' important roles in osteoarthritis, we developed two straightforward and efficient syntheses of C1 nitrogen iminocyclitols from two readily available starting materials, D-mannosamine hydrochloride and the microbial oxidation product of fructose. A diversity-oriented synthetic strategy was then performed by coupling these core structures with various aldehydes, carboxylic acids, and alkynes to generate three separate libraries. High-throughput screening of the generated libraries with human N-acetyl-beta-hexosaminidases produced only moderate inhibitory activities. However, the synthetic approach and screening strategy for these compounds will be applied to develop new potent inhibitors of human N-acetyl-beta-hexosaminidases, particularly when combined with the structural information of these enzymes.

Enzyme Inhibitors↗
PubMed2006

A collaborative hit-to-lead investigation leveraging medicinal chemistry expertise with high throughput library design, synthesis and purification capabilities.

High throughput screening (HTS) campaigns, where laboratory automation is used to expose biological targets to large numbers of materials from corporate compound collections, have become commonplace within the lead generation phase of pharmaceutical discovery. Advances in genomics and related fields have afforded a wealth of targets such that screening facilities at larger organizations routinely execute over 100 hit-finding campaigns per year. Often, 10(5) or 10(6) molecules will be tested within a campaign/cycle to locate a large number of actives requiring follow-up investigation. Due to resource constraints at every organization, traditional chemistry methods for validating hits and developing structure activity relationships (SAR) become untenable when challenged with hundreds of hits in multiple chemical families per target. To compound the issue, comparison and prioritization of hits versus multiple screens, or physical chemical property criteria, is made more complex by the informatics issues associated with handling large data sets. This article describes a collaborative research project designed to simultaneously leverage the medicinal chemistry and drug development expertise of the Novartis Institutes for Biomedical Research Inc. (NIBRI) and ArQule Inc.'s high throughput library design, synthesis and purification capabilities. The work processes developed by the team to efficiently design, prepare, purify, assess and prioritize multiple chemical classes that were identified during high throughput screening, cheminformatics and molecular modeling activities will be detailed.

Chemistry, Pharmaceutical↗
PubMed1989

Preservation activities and needs in U.S. biomedical libraries: a status report.

A national sample of health sciences and other types of libraries having significant holdings of biomedical literature was studied to determine the status of library preservation programs. Findings pertaining to 134 basic health sciences libraries and to ninety-seven resource libraries in the Regional Medical Library Program network are reported and discussed. Basic health sciences libraries participating in the study were primarily hospital libraries; resource libraries were primarily academic health sciences center libraries. Findings include information on topics perceived to be of greatest need for staff training and for informational or educational materials; on levels of preservation activity, staffing, and funding; and on capabilities for participating in a national cooperative preservation program. Efforts to identify general and special biomedical collections of potential importance to a national preservation program met with limited success.

Corrosion↗
PubMedDate not supplied

Is reading part of the lifelong learning process for RNs?

A 1988 national survey of 1,406 Registered Nurses (RNs) was conducted at 44 sites in 25 states and the District of Columbia to determine what type of occupation-related and general literature they read, what time they devote to reading, their purposes for reading, and the uses of the materials they read. The survey found that nurses are reading. They read, purchase, and subscribe to significantly more general than professional literature. They report that libraries are accessible, but they use them on a limited basis. The RNs also responded that their supervisors do not to support them in their pursuit of reading. Clinical journals, clinical books, and health-related newsletters are the top nursing materials read, newspapers and fiction books the most popular general literature.

Adult↗