Cord factor in Sputum of a Patient with Schizophrenia: a Case Report

Authors

  • Iftikhar Ahmed Department of Microbiology, Lokopriya Gopinath Bordoloi Regional Institute of Mental Health, Tezpur, India
  • Jitu Mani Kalita Department of Microbiology, Lokopriya Gopinath Bordoloi Regional Institute of Mental Health, Tezpur, India
  • Jyoti Hazarika Department of Microbiology, Lokopriya Gopinath Bordoloi Regional Institute of Mental Health, Tezpur, India

Keywords:

Cord factor, Pulmonary tuberculosis, Psychiatric comorbidities

Abstract

Trehalose 6,6’-dimycolate (TDM), or cord factor, is a glycolipid in the cell wall of Mycobacterium tuberculosis and a key determinant of its virulence. The case report highlights rare detection of cord factor in a 41-year-old female diagnosed with schizophrenia and pulmonary tuberculosis. The patient had typical symptoms of pulmonary tuberculosis and tested positive for acid fast bacilli through Ziehl– Neelsen staining as well as presence of cord. Cord factor may serve as a virulence factor which enables the bacteria to evade immune defense mechanism by inhibiting phagosome-lysosome fusion. The patient was referred for tuberculosis treatment to the nearest DOT center. The patient did not come back for follow-up, highlighting challenges in managing tuberculosis in psychiatric patients.

How to cite this article:
Ahmed I, Kalita J M, Hazarika J. Cord factor
in Sputum of a Patient with Schizophrenia: a
Case Report. Int J Adv Res MicroBiol Immunol.
2025;2(1):7-9

References

Du Toit A. Mycobacterial cords. Nature Reviews Microbiology. 2023 Dec;21(12):769-.

Actor JK. Trehalose dimycolate (cord factor) as a contributing factor to tuberculosis pathogenesis. Tuberculosis Host-Pathogen Interactions. 2019:43-61.

Garcia-Vilanova A, Chan J, Torrelles JB. Underestimated manipulative roles of Mycobacterium tuberculosis cell envelope glycolipids during infection. Frontiers in immunology. 2019 Dec 18;10:2909.

Pinhata JM, Felippe IM, Gallo JF, Chimara E, Ferrazoli L, de Oliveira RS. Growth characteristics of liquid cultures increase the reliability of presumptive identification of Mycobacterium tuberculosis complex. Journal of Medical Microbiology. 2018 Jun;67(6):828-33.

Sarmiento JMH, Restrepo NB, Mejía GI, Zapata EM, Restrepo MA, Robledo J. Rapid diagnosis of pulmonary tuberculosis. Pan Afr Med J. 2014;18. Available from: https://api.semanticscholar.org/CorpusID:22834448.

Panda UK, Ra D, Sahoo SS, Kakkar R, Singh J. Interplay between tuberculosis, mental illness, and treatment compliance: An integrative literature review. Indian Journal of Tuberculosis. 2024 Jul 1;71(3):353-7.

Brar AS, Gill RS, Gill SS, Wang H. NSAID-associated perforation of a Meckel’s diverticulum: A case report. Journal of Clinical Medicine Research. 2011 Apr 4;3(2):96.

Abe K, Ohtani S, Hara M. “ Cord formation” in smear specimen prepared from sputum for a more rapid method of presumptive identification of Mycobacterium tuberculosis. Rinsho byori. The Japanese Journal of Clinical Pathology. 2006 Feb 1;54(2):116-20.

Zhai W, Wu F, Zhang Y, Fu Y, Liu Z. The immune escape mechanisms of Mycobacterium tuberculosis. International journal of molecular sciences. 2019 Jan 15;20(2):340.

Downloads

Published

2025-05-05