An update on the use of flow cytometry in HIV infection and AIDS.
Flow cytometry has played an invaluable role in recent advances made against HIV and AIDS, and there is every reason to expect it will continue to do so. Newer-generation machines, using three- and four-color panels, make measurements of lymphocyte subsets ever more accurate and potentially cost-eff...
| Publicado en: | Clinics in Laboratory Medicine Vol. 21; no. 4; pp. 841 - 857 |
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| Autores principales: | , |
| Formato: | review tables/charts Journal Article |
| Publicado: |
W B Saunders
2001 Dec
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=106932679&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 106932679 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 02722712 23R jtl: Clinics in Laboratory Medicine issn: 02722712 maglogo: N pubinfo: dt: 2001 Dec vid: 21 iid: 4 pid: 1351 pub: W B Saunders place: Philadelphia, Pennsylvania artinfo: ui: 106932679 106932679 2002064468 NLM11770291 106932679 ppf: 841 ppct: 16 formats: tig: atl: An update on the use of flow cytometry in HIV infection and AIDS. aug: au: Hengel RL Nicholson JKA affil: Division of Infectious Diseases, Department of Medicine, Georgetown University, Washington, DC sug: subj: Flow Cytometry Methods Acquired Immunodeficiency Syndrome Diagnosis HIV Infections Diagnosis Immunophenotyping Methods CD4 Lymphocyte Count Methods Flow Cytometry Equipment and Supplies ab: Flow cytometry has played an invaluable role in recent advances made against HIV and AIDS, and there is every reason to expect it will continue to do so. Newer-generation machines, using three- and four-color panels, make measurements of lymphocyte subsets ever more accurate and potentially cost-effective. Similarly, recent single-platform techniques promise even more efficiencies, freeing CD4 enumeration from parallel determination of the CBC. In other developments, quantitative reporting of immunophenotype may well change the way subsets traditionally defined by qualitative determinations are viewed. The most promising initial candidates for such changes are surrogates of immune activation, such as CD38 expression on CD8 cells. But technical demonstration of reproducibility and reliability, and clinical trial evidence of utility--especially as measured against such established laboratory parameters as CD4 cell and HIV RNA determinations--are needed before a change from qualitative to quantitative immunophenotype measurement can be widely accepted. Although too soon to tell if they will emerge from the research arena into the clinical arena, tetramer binding, intracellular cytokine detection, and assays of cell division are rapidly advancing understanding of HIV-disease, and indeed understanding of all of human immunology. Some of these assays provide often subtly different information, and together they will help determine the most important surrogate measures of clinical immunity. Identifying such surrogates is critical to developing a rational HIV vaccine. The power of flow cytometry is its ability simultaneously to analyze data in four, five, six, or more dimensions. For longitudinal experiments, time adds yet another dimension. Humans struggle to think past three dimensions; interpreting results from experimental permutations and combinations that expand geometrically with each additional parameter studied requires considerable effort. Ultimately computer programs might come to our aid, but for now we have to live with the information overload if we hope to gain insight into the workings of complex biologic systems. In a world of limited resources, and with limited capacity to conceptualize in multiple dimensions, insight, inspiration, and perhaps a little luck are needed to ask the right questions and use the right assays if the recent string of advances against AIDS is to continue. Copyright © 2001 by W.B. Saunders Company pubtype: Periodical doctype: review tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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