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Wednesday, May 29, 2024

Hong Kong researchers suggest HCMV detection in urine as routine test for HIV-1 patients

Hong Kong researchers suggest HCMV detection in urine as routine test for HIV-1 patients

A Hong Kong Baptist University collaborative research team has shown that urine tests for human cytomegalovirus (HCMV) can identify the risk of end-organ diseases such as pneumonitis, gastrointestinal ulcers, hepatitis and myocarditis, earlier in patients who have been infected with human immunodeficiency virus type 1 (HIV-1).
The findings suggest that HCMV detection in urine should be implemented as a routine test for HIV-1 patients who are progressing towards acquired immunodeficiency syndrome (AIDS), as anti-HCMV treatments could reduce the incidence of lung and cardiovascular end-organ diseases by half.

HCMV is a DNA virus found in more than half of the human population. It is controlled by an intact immune system and remains dormant in healthy individuals. However, it can be reactivated in patients with poor immune systems, such as those in the fourth stage of HIV-1 infection, and as a result it can become one of the major opportunistic infections that cause life-threatening end-organ diseases.

In Hong Kong, HCMV detection is not part of the routine check-ups for HIV-1 patients unless they suffer from apparent end-organ diseases. In such cases, blood tests are the preferred method of detection.

According to researchers, routine urine tests for HCMV can monitor the development of end-organ diseases more effectively, which signals the need for early medical intervention.

The team screened the records of more than 130,000 HIV-1 patients in Shenzhen between January 2011 and June 2022, and selected about 13,700 patients with relevant blood and urine test records. They were grouped according to the four stages of HIV-1 infection, and the results of their HCMV blood and urine tests were then compared.

It was discovered that in all the four patient groups, the proportions of patients found to be HCMV-positive were higher in the urine samples than in the corresponding blood samples. The situation was particularly obvious for HIV-1 patients in the “developing” stage.

Urine tests showed that 5.8% of second-stage HIV-1 patients were HCMV-positive compared to only 0.9% using blood tests. The proportions of third-stage HIV-1 patients found to be HCMV-positive using urine and blood tests were 12.8% and 1.4%, respectively.

This suggests that HCMV is more easily detected in urine than in the blood, especially during the “developing” stage of HIV-1 infection.

The researchers further filtered 233 “developing” stage HIV-1 patients with detailed clinical and disease records to evaluate the association between HCMV and the onset of different types of end-organ diseases.

Statistical analysis revealed that there is a significant association between the incidence of lung and cardiovascular end-organ diseases and the detection of HCMV in urine.

To study the effect of early interventions with anti-HCMV treatments, the team tracked the data of 54 “developing” stage HIV-1 patients who had been hospitalised at least once.

They were divided into three groups: those who received no anti-HCMV treatments, those who received treatments but not during each round of hospitalisation, and those who received treatments during all rounds of hospitalisation.

The data showed that those who received anti-HCMV treatments in all rounds of hospitalisation had the lowest incidence of lung and cardiovascular end-organ diseases. Furthermore, compared to those who had not received anti-HCMV treatments, the incidence of such end-organ diseases in patients who had received the treatments was reduced by half.

This suggests that continuous anti-HCMV treatments are effective in reducing the onset of lung and cardiovascular end-organ diseases in patients who are progressing towards AIDS.

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