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<p>Paracoccidioidomycosis (PCM) is a systemic mycosis of medical and veterinary importance. Infection by fungi of the genus <i>Paracoccidioides</i> has been reported in several animal species but has not yet been described in reptiles. This study aimed to investigate serological evidence of <i>Paracoccidioides</i> infection in wild caimans (<i>Caiman yacare</i>) from the Brazilian Pantanal, Mato Grosso do Sul, a region endemic for PCM. Serum samples from 50 free-ranging caimans were analyzed by ELISA and immunodiffusion using gp43 and exoantigen, respectively. Anti-gp43 antibodies were detected in 30% of the samples by ELISA, whereas no reactivity was observed by immunodiffusion. No significant differences were found between males and females, indicating similar exposure to the pathogen. To our knowledge, this is the first report of serological evidence of <i>Paracoccidioides</i> infection in caimans, expanding the known host range of this pathogen.</p>

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Serological evidence of paracoccidioidomycosis infection in pantanal caimans (Caiman yacare)

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年3月18日

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  • Aline Myuki Omori,
  • Igor Massahiro de Souza Suguiura,
  • Zilca Maria da Silva Campos,
  • Zoilo Pires de Camargo,
  • Eiko Nakagawa Itano,
  • Mario Augusto Ono

摘要

Paracoccidioidomycosis (PCM) is a systemic mycosis of medical and veterinary importance. Infection by fungi of the genus Paracoccidioides has been reported in several animal species but has not yet been described in reptiles. This study aimed to investigate serological evidence of Paracoccidioides infection in wild caimans (Caiman yacare) from the Brazilian Pantanal, Mato Grosso do Sul, a region endemic for PCM. Serum samples from 50 free-ranging caimans were analyzed by ELISA and immunodiffusion using gp43 and exoantigen, respectively. Anti-gp43 antibodies were detected in 30% of the samples by ELISA, whereas no reactivity was observed by immunodiffusion. No significant differences were found between males and females, indicating similar exposure to the pathogen. To our knowledge, this is the first report of serological evidence of Paracoccidioides infection in caimans, expanding the known host range of this pathogen.