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Acetylcysteine for prevention of contrast nephropathy: meta-analysis.

BACKGROUND: Contrast nephropathy is associated with increased in-hospital morbidity and mortality and leads to extension of hospital stay in patients with chronic renal insufficiency. Acetylcysteine seems to be a safe and inexpensive way to reduce contrast nephropathy. We aimed to assess the efficacy of acetylcysteine to prevent contrast nephropathy after administration of radiocontrast media in patients with chronic renal insufficiency. METHODS: We did a meta-analysis of randomised controlled trials comparing acetylcysteine and hydration with hydration alone for preventing contrast nephropathy in patients with chronic renal insufficiency. The trials were identified through a combined search of the BIOSIS+/RRM, MEDLINE, Web of Science, Current Contents Medizin, and The Cochrane Library Databases. We used incidence of contrast nephropathy 48 h after administration of radiocontrast media as an outcome measure. FINDINGS: Seven trials including 805 patients were eligible according to our inclusion criteria and were analysed. Overall incidence of contrast nephropathy varied between 8% and 28%. Since significant heterogeneity was indicated by the Q statistics (p=0.016) we used a random-effects model to combine the data. Compared with periprocedural hydration alone, administration of acetylcysteine and hydration significantly reduced the relative risk of contrast nephropathy by 56% (0.435 [95% CI 0.215-0.879], p=0.02) in patients with chronic renal insufficiency. Meta-regression revealed no significant relation between the relative risk of contrast nephropathy and the volume of radiocontrast media administered or the degree of chronic renal insufficiency before the procedure. INTERPRETATION: Compared with periprocedural hydration alone, acetylcysteine with hydration significantly reduces the risk of contrast nephropathy in patients with chronic renal insufficiency. The relative risk of contrast nephropathy was not related to the amount of radiocontrast media given or to the degree of chronic renal insufficiency before the procedure.

Acetylcysteine↗

Federal-State Joint Board on Universal Service--FCC. Final rule.

This Order changes the funding year for the schools and libraries universal service support mechanism from a calendar year cycle to a fiscal year cycle. This Order also adjusts the amount of money available for schools and libraries, and rural health care providers for the period from January 1, 1998 through June 30, 1999. In addition, this Order establishes rules of priority when a filing window is in effect.

Administrative Personnel↗

The medical libraries of Vietnam--a service in transition.

The medical libraries of Vietnam maintain high profiles within their institutions and are recognized by health care professionals and administrators as an important part of the health care system. Despite the multitude of problems in providing even a minimal level of medical library services, librarians, clinicians, and researchers nevertheless are determined that enhanced services be made available. Currently, services can be described as basic and unsophisticated, yet viable and surprisingly well organized. The lack of hard western currency required to buy materials and the lack of library technology will be major obstacles to improving information services. Vietnam, like many developing nations, is about to enter a period of technological upheaval, which ultimately will result in a transition from the traditional library limited by walls to a national resource that will rely increasingly on electronic access to international knowledge networks. Technology such as CD-ROM, Integrated Services Digital Network (ISDN), and satellite telecommunication networks such as Internet can provide the technical backbone to provide access to remote and widely distributed electronic databases to support the information needs of the health care community. Over the long term, access to such databases likely will be cost-effective, in contrast to the assuredly astronomical cost of building a comparable domestic print collection. The advent of new, low-cost electronic technologies probably will revolutionize health care information services in developing nations. However, for the immediate future, the medical libraries of Vietnam will require ongoing sustained support from the international community, so that minimal levels of resources will be available to support the information needs of the health care community. It is remarkable, and a credit to the determination of Vietnam's librarians that, in a country with a legacy of war, economic deprivation, and international isolation, they have somehow managed to provide a sound basic level of information services for health care professionals.

Communism↗

In utero detection of T7 phage after systemic administration to pregnant mice.

The phage is used as a scaffold to display recombinant libraries of peptides, which provides the means to rescue and amplify peptides that bind target macromolecules. Many reports showed that the T7 phage display method can be used to obtain a ligand-binding peptidefor tissue-targeted therapies in adult animals. In utero tissue targeting of fetal tissues may help in the correction of many genetic and metabolic diseases. Here we demonstrate the distribution and detection of T7 phage displaying the C-X7-C peptide library in mouse fetal tissues after systemic injection of T7 phage into pregnant mouse tail vein. T7 phage was recovered from fetal tissues 15 min after injection of T7 phage. Our results suggest that T7 phage may be a useful tool in selecting the tissue-specific ligand-binding peptide for fetal tissues. This approach may be helpful in designing in utero tissue-targeted therapies.

Animals↗

Cassette dosing pharmacokinetics of a library of 2,6,9-trisubstituted purine cyclin-dependent kinase 2 inhibitors prepared by parallel synthesis.

Determination of pharmacokinetic properties in the intact animal remains a major bottleneck in drug discovery. Cassette dosing involves administration of a cocktail of drugs to individual animals. Here we describe the cassette dosing properties of a 107-membered library of 2,6,9-trisubstituted purine cyclin-dependent kinase 2 (CDK2) inhibitors. A three-step parallel synthesis approach produced compounds with purity ranging from 63% to 100%. Cassette dosing was validated by comparing the pharmacokinetic parameters obtained following i.v. administration of a mixture of olomoucine, R-roscovitine (CYC202), and bohemine, each at 16.6 mg/kg, with results for administration of single agents at 50 mg/kg. No significant difference was observed between the pharmacokinetic parameters of agents when dosed in combination compared with those of individual compounds. CYC202 showed the highest area under the curve (AUC) and the longest elimination half-life (t(1/2)). Further cassettes evaluated the library of trisubstituted purines with CYC202 and purvalanol A included as pharmacokinetic standards in a validated limited sampling strategy. The ratios of pharmacokinetic parameters to that of CYC202 [AUC, maximum concentration (C(max)), and t(1/2)] remained similar when compounds were tested in two different cassettes or as individual compounds. Following dosing of the same cassette on three different days, there was less than 20% variation in pharmacokinetic parameters between days. The structure-pharmacokinetics relationship showed that the favored purine substituents are benzylamine and veratrylamine at position 6, amino-2 propanol at position 2, and methylpropyl or hydroxyethyl at position 9. Without cassette dosing, this study would have used 3 times as many animals and would have taken 4 times longer, illustrating the power of this method in lead optimization.

Animals↗

Searching the MEDLARS file on NLM and BRS a comparative study.

A comparison of the MEDLARS data base as it is currently available from the National Library of Medicine and Bibliographic Retrieval Services (BRS), Inc., is presented in chart format, and some major capability differences between the two systems are highlighted. The information inlcuded justifies the dual availability of the data base in health sciences libraries. This paper is intended for searchers and others familiar with one or both systems. Administrators considering the acquisition of the BRS system may find the study useful.

MEDLARS↗

[The Library of Medicine of Córdoba, witness and protagonist of knowledge from the end of the 19th Century to the beginning of 21st Century].

In the nineteenth century, was founded the Medicine's Library of the National University Faculty of Medicine, center of knowledge, new ideas and teaching. The history library sector hold the valuable inheritance that represent the collection of Teachers Doctors, Pablo Mirizzi, Temístocles Castellano, Pedro Ara, José F. Verna, Juan Martín Allende located with the books and thesis of the XIX century and beginning of XX century. In 1986 it integrates the National Health Science Information Network and also, the Latino American and the Caribbean Health Science Information Network. The health libraries are in front of a new paradigm. The technologies of information and communication require new methods for administration of the information's resources and services, to answer the society information needs in the knowledge age. The traditional and virtual library is one unit that complement sources in different supports, electronic publications and interactive networks. It is the nexus between the scientific inheritance and the society, and it's mission is: Give local and virtual information's services and management the information's resources, basis of the knowledge society, support of teaching, investigation and extension of the Medical Sciences Faculty of the Córdoba National University.

Academic Medical Centers↗

Glatiramer acetate (Copaxone) induces degenerate, Th2-polarized immune responses in patients with multiple sclerosis.

We examined the effect of glatiramer acetate, a random copolymer of alanine, lysine, glutamic acid, and tyrosine, on antigen-specific T-cell responses in patients with multiple sclerosis (MS). Glatiramer acetate (Copaxone) functioned as a universal antigen, inducing proliferation, independent of any prior exposure to the polymer, in T-cell lines prepared from MS or healthy subjects. However, for most patients, daily injections of glatiramer acetate abolished this T-cell response and promoted the secretion of IL-5 and IL-13, which are characteristic of Th2 cells. The surviving glatiramer acetate-reactive T cells exhibited a greater degree of degeneracy as measured by cross-reactive responses to combinatorial peptide libraries. Thus, it appears that, in some individuals, in vivo administration of glatiramer acetate induces highly cross-reactive T cells that secrete Th2 cytokines. To our knowledge, glatiramer acetate is the first agent that suppresses human autoimmune disease and alters immune function by engaging the T-cell receptor. This compound may be useful in a variety of autoimmune disorders in which immune deviation to a Th2 type of response is desirable.

Adult↗

The Mount Sinai Hospital--a brief history.

In 1852, The Jews Hospital was founded for the increasing number of Jews in New York. It opened in 1855 with 45 beds on West 28th Street; 92% of the patients were indigent. In 1864, the hospital formally became nonsectarian and, in 1866, changed its name to The Mount Sinai Hospital. The medical staff was primarily Jewish, because until relatively recently, it was difficult for Jewish doctors to obtain postgraduate training or specialist posts at major New York hospitals. As the Jewish population moved uptown, so did The Mount Sinai Hospital: in 1870 to 66th Street, and in 1904 to 100th Street, with 456 beds, growing with new buildings and services to the current 1100 beds, 50,000 discharges, 400,000 inpatient days and 300,000 outpatient visits each year. Services increasingly became specialized, and then subspecialized. Key innovations included the choice of interns by competitive examination (1872), an advisory Medical Board (1872), the Nurse Training School (1881), the library (1883), the Alumni Association (1896), a professional medical hospital administrator (1903), research laboratories (1904), clinicopathological conferences (1905), the Social Services Department (1906), postgraduate teaching programs (1923), full-time chiefs of clinical services (1944), the dedication of the Mount Sinai School of Medicine (1968), and the merger in 1998 into the Mount Sinai-New York University Medical Center.

History, 19th Century↗

The view behind and ahead: implications of certification.

The Medical Library Association's certification plan, never of real significance in employment and promotion practices in health sciences librarianship, does not reflect the many changes which have occurred in swift progression since adoption of the code in 1949. Solutions to the problems which have accumulated since then are sought in a brief examination of trends in credentialing and certification in the health professions and in the library field, both general and special. Emphasis is given to the historical development of provisions in the MLA Code for the Training and Certification of Medical Librarians, the limited opportunity for practical implementation of most of the provisions, the importance of the code in stimulating the Association's educational programs, the impact of the Medical Library Assistance Act, Regional Medical Programs, and increases in demand for health information on manpower requirements for health science libraries, the specific dissatisfactions MLA members have expressed over certification, and the role of the Ad Hoc Committee to Develop a New Certification Code.

Accreditation↗

Medical library development at the University of Ibadan, Nigeria.

While libraries of all kinds in Nigeria have many problems, some medical libraries are well established and are giving the services expected of such libraries anywhere. In current conditions of restricted finance and distance from metropolitan countries, consultation and cooperation in serials acquisitions together with union catalogs of serials would be of great value. Modern copying methods make this practical. Union catalogs of monographs would also be valuable. Two new major medical libraries are projected-one half-built, the other still at the planning stage. Each must be planned to give area services rather than purely local and internal services.

Libraries, Medical↗