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At least 289 records · Page 16Linked to original sources
PubMed1996

The utility of IgA antibody to human immunodeficiency virus type 1 in early diagnosis of vertically transmitted infection. National Institute of Allergy and Infectious Diseases and National Institute of Child Health and Human Development Women and Infants Transmission Study Group.

OBJECTIVE: To determine the sensitivity and specificity of anti-human immunodeficiency virus (HIV) IgA in identifying infected infants at or before 6 months of age among the offspring of HIV-infected mothers. DESIGN: Prospective comparison of anti-HIV IgA measurement performed in 2 different laboratories by 2 different methods with the criterion standard of blood culture. SETTING: Five centers in the United States and Puerto Rico. PATIENTS: Population-based sample of 156 infants of HIV-infected mothers in the Women and Infants Transmission Study. MAIN OUTCOME MEASURES: Results of anti-HIV IgA test in relation to the infection status of the infants as measured by blood culture. RESULTS: Six-month plasma or serum samples were first tested in the 2 laboratories. The sensitivity and specificity of anti-HIV IgA in detecting infected infants at this age by laboratories 1 and 2 were 69% and 63% and 100% and 99%, respectively. A look-back study of samples obtained at birth, 1, 2, and 4 months was then performed on all infected children and a matched set of uninfected children. The performance of the test at birth was unsatisfactory in both laboratories (sensitivity 44% and 33%, specificity 43% and 60%), whether peripheral or cord blood was examined. At 1, 2, and 4 months, the sensitivity of the test was lower than at 6 months, but specificity was high. A modest correlation of absent anti-HIV IgA antibody and low percentage of CD4 cells in peripheral blood was seen at 6 months of age. CONCLUSIONS: The anti-HIV IgA test has moderate sensitivity and high specificity for the diagnosis of HIV infection at 6 months of age in the offspring of infected mothers.

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PubMed2000

New Selenium-Based Safety-Catch Linkers: Solid-Phase Semisynthesis of Vancomycin We thank Drs. D. H. Huang and G. Siuzdak for NMR spectroscopic and mass spectrometric assistance, respectively. This work was financially supported by the National Institutes of Health (USA), The Skaggs Institute for Chemical Biology, a fellowship from the George Hewitt Foundation (N. W.), and grants from Schering Plough, Pfizer, Glaxo, Merck, Hoffmann-La Roche, DuPont, and Abbott Laboratories.

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PubMed2000

1,2-Seleno Migrations in Carbohydrate Chemistry: Solution and Solid-Phase Synthesis of 2-Deoxy Glycosides, Orthoesters, and Allyl Orthoesters We thank Drs. D. H. Huang and G. Siuzdak for NMR spectroscopic and mass spectrometric assistance, respectively. We gratefully thank Nicolas Winssinger for helpful discussions and preparation of the selenium bromide resin. This work was financially supported by the Skaggs Institute for Chemical Biology, the National Institutes of Health (USA), postdoctoral fellowships from M.E.C., Spain (R.M.R., Fullbright), the Japan Society for the Promotion of Science (H.S.), the George Hewitt Foundation (K.C.F.), and grants from Schering Plough, Pfizer, Glaxo, Merck, Hoffmann - La Roche, DuPont, Abbott Laboratories, and Boehringer - Ingelheim.

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PubMed2000

Dimerization of an Inactive Fragment of Huperzine A Produces a Drug with Twice the Potency of the Natural Product This work was supported by the Research Grants Council of Hong Kong (HKUST6156/97M), the Biotechnology Research Institute (HKUST), the Mayo Foundation, and the Istituto Pasteur Fondazione Cenci Bolognetti (E.P.). We thank Prof. X. C. Tang (Shanghai Institute of Materia Medica) for a gift of (-)-1.

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PubMed2000

The Absolute Configuration and Asymmetric Total Synthesis of the CP Molecules (CP-263,114 and CP-225,917, Phomoidrides B and A) We thank Drs. D. H. Huang, G. Siuzdak, and R. Chadha for assistance with NMR spectroscopy, mass spectrometry, and X-ray crystallography, respectively. This work was financially supported by the National Institutes of Health (USA), The Skaggs Institute for Chemical Biology, doctoral fellowships from the National Science Foundation (P.S.B.) and Boehringer Ingelheim (Y.H.), and grants from Array Biopharma, Boehringer Ingelheim, Schering Plough, Pfizer, Glaxo, Merck, Hoffmann-La Roche, DuPont, and Abbott Laboratories.

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PubMed2000

A Dodecanuclear Copper(II) Cage Containing Phosphonate and Pyrazole Ligands This work was supported by a grant from the Department of Science and Technology (DST), New Delhi (V.C.). V.C. is also grateful to the Homi Bhabha Fellowship Council for a fellowship. We thank the DST for funding the National Facility for X-ray Crystallography at the Indian Institute of Technology, Kanpur. We thank Prof. Dr. P. K. Bharadwaj for his help in the data collection and X-ray analysis, and Prof. Dr. A. R. Chakravorthy, Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore, India for the magnetic measurements on 1.

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PubMed2000

Novel Reactions Initiated by Titanocene Methylidenes: Deoxygenation of Sulfoxides, N-Oxides, and Selenoxides We thank Drs. D. H. Huang and G. Suizdak for NMR spectroscopic and mass spectroscopic assistance, respectively. Financial support for this work was provided by The Skaggs Institute for Chemical Biology, the National Institutes of Health (USA), fellowships from the National Science Foundation (S.A.S.) and the Alfred Benzons Foundation (K.B.S.), and grants from Abbott, Amgen, Boehringer-Ingelheim, GlaxoWellcome, Hoffmann-LaRoche, DuPont, Merck, Novartis, Pfizer, and Schering Plough.

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PubMed2000

Model Studies towards Diazonamide A: Synthesis of the Heterocyclic Core We thank Dr. D. H. Huang, Dr. G. Suizdak, and Dr. R. Chadha for NMR spectroscopic, mass spectrometric, and X-ray crystallographic assistance, respectively. We also thank Professor R. H. Grubbs for a generous gift of catalyst 30. Financial support for this work was provided by The Skaggs Institute for Chemical Biology, the National Institutes of Health (USA), a predoctoral fellowship from the National Science Foundation (S.A.S.), postdoctoral fellowships from the Alfred Benzons Foundation and the Danish Natural Science Research Council (K.B.S.), and grants from Abbott, Amgen, ArrayBiopharma, Boehringer-Ingelheim, GlaxoWellcome, Hoffmann-LaRoche, DuPont, Merck, Novartis, Pfizer, and Schering Plough.

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