Distribution of Galactomannan antigen in BAL and serum samples among Aspergillus isolates and its correlation with culture among Immunocompetent and Immunocomporomised patients in Aligarh region, a north India town

Authors

  • Asma Husein Roohani JNMC, AMU, Aligarh, UP.
  • Nazish Fatima JNMC, AMU, Aligarh, UP.
  • Mohammad Shamim JNMC, AMU, Aligarh, UP.
  • Haris Manzoor Khan JNMC, AMU, Aligarh, UP.
  • Anees Akhtar JNMC, AMU, Aligarh, UP

DOI:

https://doi.org/10.21276/apalm.2473

Keywords:

galactomannan antigen, Bronchoalveolar lavage, immunocompetent and immunocompromised

Abstract

Background: Aspergillosis is one of the most common fungal infection among both general patients and immunocompromised individuals.

Methods: The study was carried out on 2 groups of patients: immunocompetent and immunocompromised comprising of a total of 90 patients. Microscopy, culture, identification of isolates was done and some specialised tests on serum and BAL for antigen detection were performed.

Result: Most of the patients i.e., 47 (31.3%) were between 31-40 years with a mean age of 32.5 years. The male to female ratio was 1.8:1. Galactomannan antigen was positive in 13 (28.9%) BAL samples and in 15 (33.3%) serum samples wherein the 45 BAL samples represented immunocompetent cases and 45 serum samples represented immunocompromised cases. Sensitivity and specificity of GM assay in BAL samples were found to be 100% and 97% respectively. On the other hand, sensitivity and specificity in serum samples were found to be 94.1% and 100% respectively. All patients were categorized into 4 categories as proven IPA, probable IPA, possible IPA and non-IPA. 22 (24.4%) patients were of proven invasive pulmonary aspergillosis (IPA), 7 (7.8%) of probable IPA, 2 (2.2%) belonged to possible IPA while 59 (65.5%) were of non IPA. All of the cases of proven IPA were positive on culture.

Conclusion: GM assay in BAL is a very sensitive and specific marker for Aspergillosis while in case of serum samples it is somewhat lesser sensitive.

Author Biographies

Asma Husein Roohani, JNMC, AMU, Aligarh, UP.

Department of Microbiology

Nazish Fatima, JNMC, AMU, Aligarh, UP.

Department of Microbiology

Mohammad Shamim, JNMC, AMU, Aligarh, UP.

Department of TB and Respiratory Disease

Haris Manzoor Khan, JNMC, AMU, Aligarh, UP.

Department of Microbiology

Anees Akhtar, JNMC, AMU, Aligarh, UP

Department of Microbiology

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Published

28-08-2019

How to Cite

1.
Roohani AH, Fatima N, Shamim M, Khan HM, Akhtar A. Distribution of Galactomannan antigen in BAL and serum samples among Aspergillus isolates and its correlation with culture among Immunocompetent and Immunocomporomised patients in Aligarh region, a north India town. Ann of Pathol and Lab Med [Internet]. 2019 Aug. 28 [cited 2024 Nov. 27];6(8):A414-420. Available from: https://pacificejournals.com/journal/index.php/apalm/article/view/2473

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