Related Experiment Video
Updated: Apr 11, 2026

Author Spotlight: Enhancing Transplantation Research Through MicroCT Angiography in Murine Models
Published on: September 22, 2023
Prototheca wickerhamii algaemia: an emerging infection in solid organ transplant recipients
T D Bandaranayake1, A Paniz Mondolfi2, D R Peaper2
1Section of Infectious Diseases, Yale School of Medicine, New Haven, Connecticut, USA.
Abstract:
Prototheca wickerhamii is an alga that rarely causes human disease but has been reported increasingly among immunocompromised individuals. We report a fatal case of P. wickerhamii in a renal transplant recipient who presented with a cutaneous lesion that led to disseminated disease despite treatment with voriconazole. We reviewed previous cases of protothecosis involving solid organ transplant recipients in the literature and discussed the value of newer microbiology platforms, i.e., matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF), to achieve early diagnosis and impact outcomes.
Insights
Prototheca wickerhamii, a rare alga, caused a fatal disseminated infection in a renal transplant recipient. Early diagnosis using matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF) is crucial for improving outcomes in immunocompromised patients.
Area of Science:
- Medical Mycology
- Infectious Diseases
- Transplant Medicine
Background:
- Prototheca wickerhamii is an alga rarely causing human disease.
- Infections are increasingly reported in immunocompromised individuals.
- Solid organ transplant recipients are a vulnerable population.
Observation:
- A fatal case of disseminated P. wickerhamii infection occurred in a renal transplant recipient.
- The initial presentation was a cutaneous lesion.
- Disseminated disease progressed despite voriconazole treatment.
Findings:
- Review of literature on protothecosis in solid organ transplant recipients.
- Demonstration of P. wickerhamii's potential for severe, disseminated disease.
- Voriconazole may not be effective in all cases.
Implications:
- Highlights the importance of considering P. wickerhamii in immunocompromised patients with unusual infections.
- Emphasizes the diagnostic value of advanced microbiology techniques like MALDI-TOF.
- Suggests a need for further research into effective treatment strategies for protothecosis.
Related Concept Videos
Tissue Transplantation
The Biology of Tissue Transplantation
The biology of tissue transplantation hinges on the Major Histocompatibility Complex (MHC) molecules. These molecules...
Bone Marrow Sampling and Transplants
The transplant begins with high doses of chemotherapy and radiation treatment, which aim to destroy...
Cell-mediated Immune Responses
Kidney Transplant I: Introduction

