Rapid detection of GM1 ganglioside in cerebrospinal fluid in dogs with GM1 gangliosidosis using matrix-assisted laser desorption ionization time-of-flight mass spectrometry.

Abstract

The concentration of GM1 (monosialotetrahexosyl ganglioside) in cerebrospinal fluid (CSF) is markedly increased in dogs with GM1 gangliosidosis due to GM1 accumulation in the central nervous system and leakage to the CSF. The present study established a rapid and simple method for detection of accumulated GM1 in the CSF in dogs with GM1 gangliosidosis using matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI TOF MS) and discusses the usefulness of this method for the rapid diagnosis and/or high-risk screening of this disease in domestic animals. Cerebrospinal fluid was collected from normal dogs and 4- to 11-month-old Shiba dogs with GM1 gangliosidosis. The MALDI TOF MS analysis was carried out in combination with a special sample plate and a simple desalting step on the plate. Specific signs of GM1 could be detected in the standard GM1 solutions at concentrations of 50 nmol/l or more. The signs were also clearly detected in CSF (131-618 nmol/l) in affected dogs, but not in normal canine CSF (12 ± 5 nmol/l, mean ± standard deviation). The results demonstrated that MALDI TOF MS can detect GM1 accumulated in canine CSF even in the early stage of the disease. In conclusion, the rapid detection of increased CSF GM1 using MALDI TOF MS is a useful method for diagnosis and/or screening for canine GM1 gangliosidosis.

• Authors: Hiroyuki Satoh, Toyofumi Yamauchi, Masahiro Yamasaki, Yoshimitsu Maede, Akira Yabuki, Hye-Sook Chang, Taketoshi Asanuma, Osamu Yamato
• Journal: Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc (J Vet Diagn Invest) Vol. 23 Issue 6 Pg. 1202-7 (Nov 2011) ISSN: 1943-4936 [Electronic] United States
• PMID: 22362802 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• G(M1) Ganglioside

Topics

• Animals
• Case-Control Studies
• Dog Diseases (cerebrospinal fluid, diagnosis)
• Dogs
• G(M1) Ganglioside (cerebrospinal fluid)
• Gangliosidosis, GM1 (cerebrospinal fluid, diagnosis, veterinary)
• Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization (veterinary)