Related Experiment Video
Updated: Jul 12, 2026

A Catheter-Related Candida albicans Infection Model in Mouse
Published on: March 22, 2024
[Asymptomatic fungemia caused by Acremonium sp associated with colonization of a central venous catheter]
Patricia Cornejo-Juárez1, Consuelo Velásquez-Acosta, Victoria Martínez-Roque
1Departamento de Infectología, Instituto Nacional de Cancerología, México DF, México. patcornejo@yahoo.com
Background:
Microorganisms considered saprophytes have emerged as invasive or indolent pathogens among immuno-compromised patients.
Material And Methods:
We detected an initial case of catheter-related Acremonium sp fungemia on a previously asymptomatic patient. We diagnosed a second case five weeks later. Both patients had a non-tunneled central venous catheter (CVC) that had been cared for following routine protocol by nurses in the Intravenous Therapy Team on a weekly basis. The sole risk factor that both patients shared was that they had received total parenteral nutrition (TPN) by a CVC 5 months prior to the date the catheter-related fungemia was detected. We retrospectively studied all patients who had received TPN during this period.
Results:
We found two cases ofAcremonium fungemia, patients had gastric adenocarcinoma and received TPN for an average of 19 days. Infection was resolved with catheter removal and antifungic therapy. Another eight patients received TPN from the same commercial firm during this period; average administration was 9.5 days (range, 6-20). Neither blood cultures nor tip-catheters culture reported Acremonium sp.
Conclusions:
Patients with CVC for TPN should be closely monitored to identify colonization with a low pathogenic microorganism that could be mistakenly diagnosed as asymptomatic.
Insights
Saprophytic fungi like Acremonium sp. can cause invasive fungemia in immunocompromised patients receiving total parenteral nutrition (TPN) via central venous catheters (CVCs). Close monitoring is crucial for early detection and treatment of such infections.
Area of Science:
- Medical Mycology
- Infectious Diseases
- Clinical Microbiology
Context:
- Saprophytic fungi can act as opportunistic pathogens in immunocompromised individuals.
- Catheter-related fungemia poses a significant risk, especially in patients with central venous catheters (CVCs).
- Total parenteral nutrition (TPN) administration via CVCs is a common practice in clinical settings.
Purpose:
- To report two cases of Acremonium sp. fungemia in patients with CVCs receiving TPN.
- To investigate the potential link between TPN and catheter-related Acremonium sp. infections.
- To highlight the importance of monitoring for indolent fungal pathogens in at-risk patient populations.
Summary:
- Two cases of catheter-related Acremonium sp. fungemia were identified in patients who had previously received TPN through a CVC.
- Both infections were successfully treated with catheter removal and antifungal therapy.
- Retrospective analysis of other TPN patients from the same period did not reveal further Acremonium sp. cases, suggesting a complex etiology or rare occurrence.
Impact:
- This study underscores the need for vigilant monitoring of patients with CVCs, particularly those receiving TPN, for colonization by low-pathogenicity fungi.
- Early detection and management of Acremonium sp. fungemia can prevent severe complications.
- Findings emphasize the potential for saprophytic microorganisms to transition into clinically significant pathogens in vulnerable patient groups.
Related Concept Videos
Cryptococcal Meningitis
Candidiasis
Fungal Phylum Microsporidia
Brain Abscess l: Introduction
Factors Affecting the Risk of Infection
The integrity and count of the white blood cells help the body resist pathogens and fight infection. When impaired, it reduces the body's resistance to pathogens. The acidic pH levels of the gastrointestinal, genitourinary tracts, and skin create...
Healthcare Associated Infections I: Iatrogenic, Exogenic and Endogenic
HAIs significantly increase the cost of health care. Extended stays in healthcare institutions, increased disability, increased costs of medications, including specialized antibiotics, and prolonged recovery times add to the patient's expenses and the healthcare institution and funding bodies. Common...
