Human Venezuelan equine encephalitis virus infection and diabetes in Zulia State, Venezuela.

This research work aims to investigate the link, if any, between Venezuelan equine encephalitis (VEE) virus infection and the eventual development of diabetes in patients. Through the study, the researchers concluded that there is no significant relationship between VEE virus infection and subsequent diabetes.

Participant Selection

• The study involved individuals exposed to the VEE virus during an epidemic in 1969 in Zulia State, Venezuela. The oral glucose tolerance tests and serum immunoreactive insulin responses of 13 patients were analyzed.
• In addition, the researchers also tested the sera of 86 diabetic outpatients and 98 control individuals with normal glycemia at a local hospital for antibodies to the VEE virus.

Methodology

• The researchers performed oral glucose tolerance tests to observe any alterations in glucose metabolism, a defining characteristic of diabetes.
• The serum immunoreactive insulin responses of patients were also measured. Insulin controls glucose levels in the blood, and irregularities in this process can lead to diabetes.
• The presence of VEE virus antibodies was determined by using a hemagglutination inhibition test.

Results

• The study found no significant alterations in the glucose tolerance tests of the 13 patients infected with the VEE virus.
• Furthermore, they found no statistically significant difference in the presence of VEE virus antibodies between the diabetic outpatients and the control individuals. In fact, only a small proportion of the tested individuals in either group had detectable antibodies against the VEE virus; 10.4% of the diabetic patients and 7.1% of the control group.
• It was also observed that 73% of the diabetics with detectable antibodies were individuals over 40 years old and could be classified as insulin independent.

Conclusion

• The findings from the research work suggest no relationship between VEE virus infection and subsequent diabetes, contradicting the hypothesis that VEE virus could interfere with glucose metabolism leading to diabetes.