Diagnostic value for detection of aspergillus ribosomal RNA in fungal rhinosinusitis with hybridization in situ / 中华耳鼻咽喉头颈外科杂志

ABSTRACT

<p><b>OBJECTIVE</b>To develop a reliable, rapid assay for detecting pathogenic aspergillus species in fungal sinusitis.</p><p><b>METHODS</b>Thirty-seven formalin-fixed and paraffin-embedded surgical tissue specimens from patients with fungal sinusitis were used in the present study. The aspergillus specific oligonucleotide probe was designed, commercially synthesized, and digoxigenin-labeled. Twenty-three-base oligonucleotides was selected that was complementary to 18S ribosomal RNA sequences (18S-1 probe) for detecting medically important aspergillus species.</p><p><b>RESULTS</b>In situ hybridization for aspergillus rRNA was positive in 28 cases with the 18S-1 probe. Compared with HE (21) and methenamine-silver stain (23).</p><p><b>CONCLUSION</b>In situ hybridization provides rapid and accurate identification for fungal organism in tissues, and may be useful if cultures are negative or have not performed.</p>