Advanced Search

Images Only
Home What's New Submit Browse About Get Involved 

You must login in order to browse the Full-text
 
 
  
Help Desk:
Phone: 202-942-9317


Questions?
MicrobeLibrary@asmusa.org

Permissions

© American Society
    for Microbiology,
    Washington DC



Printable Version
Candida spp. Showing Pseudohyphae in a Direct Wet Mount of a Vaginal Discharge
Resource Type: Visual: Image
Publication Date: 8/25/2009
Figure

Candida species showing pseudohyphae (Enlarged view)
Candida species showing pseudohyphae (Labeled view)
Authors
Guadalupe del Rocio Dominguez-Figueroa
Fac. de Ciencias Quimicas, Campus IV, Universidad Autonoma de Chiapas
Tapachula, Chiapas
Mexico
Email: laudry_15@hotmail.com
Ulises Alberto Santiago-Vazquez
Lab. de Biologia Molecular y Genetica, Facultad de Ciencias Biologicas
Universidad de Ciencias y Artes de Chiapas
Tuxtla Gutierrez, Chiapas 29000
Mexico
Email: guglimon_1@hotmail.com
Javier Gutierrez-Jimenez
Lab. de Biologia Molecular Y Genetica, Facultad de Ciencias Biologicas
Universidad de Ciencias Y Artes de Chiapas
Tuxtla Gutierrez, Chiapas 29000
Mexico
Email: aeromonas2002@yahoo.com.mx
Abstract
Human Candida infections, such as vulvovaginal candidiasis, occur at a mucosal surface and are usually caused by Candida albicans. Occasionally such infections are caused by other Candida species or yeasts. Virulence factors are expressed by this fungus on the mucosal surface. These factors include proteolytic enzymes that belong to the secreted aspartic proteinase (Sap) family; protein or glycoprotein adhesins; and long, apically growing thread structures known as hyphae, which also have potential immunoescape properties. Pseudohyphae of Candida species formed from budding yeast cells can be observed in a direct wet mount of a vaginal discharge with saline or 10% KOH solution.

The image shows a direct wet mount prepared from a white vaginal discharge showing pseudohyphae, budding yeast, and human epithelial cells.  Examination of a fresh vaginal discharge provides the simplest and most rapid diagnostic test in aiding presumptive identification of Candida species.

The vaginal discharge was collected from a 37-year-old female with dysuria and vulvovaginal pruritus.  The sample was diluted with equal parts of physiologic sterile saline and applied directly to the surface of a slide. A coverslip was placed over the surface of the sample, and excess liquid was blotted from around the edges.

References.

1.  Buxton, R. 2007.  Examination of Gram stains of vaginal secretions.  ASM Microbe Library. http://www.microbelibrary.org/Gram%20Stain/details.asp?id=2416&Lang=.

2.  Casasone, A., F. De Berrnardis,  and G. Santoni. 2007. Anticandidal immunity and vaginitis: novel opportunities for immune intervention. Infec. Immun. 75:4675–4686.

3.  Gilligan, P. H., M. L. Smiley, and D. S. Shapiro. 1997. Cases in medical microbiology and infectious diseases. p. 2–4. ASM Press, Washington, DC.

4. Jo Baron, E., and S. M. Finegold. 1990. Bailey & Scott´s diagnostic microbiology, p. 66, 263–269. Mosby, St. Louis, MO.