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Glymphatic system activity revealed by diffusion tensor image analysis along the perivascular space analysis in
Yintao Liu1,2, Chengxiang Liu1,2, Dongmei Liu1,2
1School of Life Science and Technology, Xidian University, Xi'an, Shaanxi 710126, China.
The Journal of Sexual Medicine
|April 18, 2026
Summary
Lifelong premature ejaculation patients show impaired glymphatic function, indicated by a lower diffusion tensor image analysis along the perivascular space (DTI-ALPS) index. This dysfunction correlates with disease severity and depression, suggesting new therapeutic targets.
Area of Science:
- Neuroscience
- Radiology
- Urology
Background:
- Lifelong premature ejaculation (PE) is a prevalent male sexual dysfunction.
- Glymphatic system investigations in lifelong PE are limited.
Purpose of the Study:
- To investigate glymphatic function alterations in lifelong PE patients.
- To explore the correlation between the diffusion tensor image analysis along the perivascular space (DTI-ALPS) index and clinical symptoms of lifelong PE.
Main Methods:
- 36 lifelong PE patients and 30 healthy controls (HCs) were enrolled.
- Diffusion tensor imaging was used to calculate the DTI-ALPS index.
- Statistical analyses included intergroup comparisons and correlation assessments.
Main Results:
- Lifelong PE patients exhibited a significantly lower DTI-ALPS index compared to HCs.
- The decreased DTI-ALPS index negatively correlated with lifelong PE severity.
- Patients with high depressive states showed significantly lower DTI-ALPS index values.
Conclusions:
- Glymphatic system dysfunction may be implicated in lifelong PE pathophysiology.
- Abnormal intracranial waste clearance is evident in lifelong PE.
- Findings suggest potential for novel diagnostic tools and therapies targeting the glymphatic system.
Keywords:
diffusion tensor image analysis along the perivascular spaceglymphatic systemlifelong premature ejaculationmagnetic resonance imaging
