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Processing of Bronchoalveolar Lavage Fluid and Matched Blood for Alveolar Macrophage and CD4+ T-cell Immunophenotyping and HIV Reservoir Assessment
07:21

Processing of Bronchoalveolar Lavage Fluid and Matched Blood for Alveolar Macrophage and CD4+ T-cell Immunophenotyping and HIV Reservoir Assessment

Published on: June 23, 2019

[The estimation of Pneumocystis carinii in HIV-infected patients occurrence based on three different methods]

J Ciarkowska1, G Spausta, A Wiczkowski

  • 1Katedra i Zakład Ogólnej Biologii Lekarskiej Slaskiej Akademii Medycznej, 41-808 Zabrze, ul. Jordana 19.

Wiadomosci Parazytologiczne
|August 10, 2006
PubMed

Insights

Giemsa staining of bronchoalveolar lavage (BAL) fluid is the most effective method for diagnosing Pneumocystis pneumonia (PCP) in HIV-infected patients. This method identified Pneumocystis carinii in 81.6% of cases, significantly outperforming other techniques.

Area of Science:

  • Medical Microbiology
  • Infectious Diseases
  • Pulmonology

Background:

  • Pneumocystis pneumonia (PCP) is a significant opportunistic infection in individuals with advanced HIV.
  • Accurate and timely diagnosis of PCP is crucial for effective treatment and improved patient outcomes.
  • Various diagnostic methods exist for detecting Pneumocystis carinii in bronchoalveolar lavage (BAL) specimens.

Purpose of the Study:

  • To compare the diagnostic efficacy of three different methods for detecting Pneumocystis carinii in BAL samples from HIV-infected patients.
  • To determine the most sensitive method for Pneumocystis carinii identification in this patient population.

Main Methods:

  • Bronchoalveolar lavage (BAL) sediments were collected from 38 HIV-infected patients.
  • Specimens were analyzed using Giemsa staining, Gomori-Grocott silver staining, and indirect immunofluorescence assay (IFA).

Main Results:

  • Giemsa staining detected Pneumocystis carinii in 81.6% of patients.
  • Gomori-Grocott method identified the organism in 31.6% of cases.
  • Indirect immunofluorescence assay yielded positive results in only 23.7% of patients.

Conclusions:

  • Giemsa staining is the most sensitive method for diagnosing Pneumocystis carinii in BAL specimens from HIV-infected individuals.
  • The high sensitivity of Giemsa staining makes it a valuable tool for PCP diagnosis in resource-limited settings.
  • Further studies may explore the utility of IFA in specific clinical scenarios or with optimized protocols.

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