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Volume 26, Number 10—October 2020
Research Letter

Mycobacterium leprae on Palatine Tonsils and Adenoids of Asymptomatic Patients, Brazil

Marilda Aparecida Milanez Morgado de Abreu1Comments to Author , Gisele Alborghetti Nai, Juliana D’Andrea Molina, Rafael Tomaz Gomes, and Ana Maria Roselino Natalia de Paula1
Author affiliations: Regional Hospital, Presidente Prudente, Brazil (M.A.M. Morgado de Abreu, R.T. Gomes); University of Oeste Paulista, Presidente Prudente (M.A.M. Morgado de Abreu, G.A. Nai, J.A. Molina); and University of São Paulo, Ribeirão Preto, Brazil (N. de Paula, A.M. Roselino).

Main Article

Table

Patient data and results of Fite-Faraco staining, immunohistochemistry with anti–PGL-I antibody, and PCR assays in study of Mycobacterium leprae on palatine tonsils and adenoids, Brazil, 2019*

Patient no. Age, y/sex Lymphoid organ Fite-Faraco stain IHC anti–PGL-I PCR RLEP M. leprae identification by DNA sequencing, %
1
 20/F
 AD
 +
 +
 +
 ND
2 19/M RPT + + + ND
LPT
 –
 +
 +
 ND
3 10/M RPT + + + 100
LPT
 –
 +
 +
 ND
4 9/M RPT – + + ND
LPT + + + 99
AD
 +
 +
 +
 ND
5 7/M RPT – + + ND
LPT + + + ND
AD
 –
 +
 +
 ND
6 4/M RPT – + + ND
LPT + + + 99
AD
 –
 –
 +
 ND
7 13/F RPT + + + 98
LPT – + + ND
AD
 –
 +
 +
 ND
8 6/M RPT – – – ND
LPT + + + ND
AD
 –
 +
 +
 98
Total positive results
 9 18 19

*AD, adenoid; PGL-I, phenolic glycolipid I; IHC, immunohistochemistry; LPT, left palatine tonsil; ND, not determined; RLEP, M. leprae repetitive DNA sequence; RPT, right palatine tonsil; –, negative; +, positive.

Main Article

1These authors contributed equally to this article.

Page created: September 02, 2020
Page updated: September 17, 2020
Page reviewed: September 17, 2020
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