Is there a concordance between carotid and penile cavernosal artery intima-media thickness in patients with erectile dysfunction?

This study aimed to investigate the predictive accuracy of carotid and cavernosal Doppler ultrasound findings for discriminating patients with vasculogenic erectile dysfunction (ED). Fifty patients with complaints of ED were included. B-mode ultrasound of bilateral carotid arteries were performed and peak systolic velocity (PSV), end-diastolic velocity (EDV) and intima-media thickness (IMT) values were measured. Afterwards, corresponding values of cavernosal arteries were obtained by penile color duplex ultrasonography (P-CDU). Of total 50 patients, 29 (58%) were included in vasculogenic ED group and 21 (42%) in non-vasculogenic ED group according to P-CDU findings. There was a significant difference between groups for cavernosal IMT (P=0.012) but not for carotid IMT (P=0.601). When patients were reclassified according to carotid IMT values (IMT of the first group <0.9 mm and the second ≥0.9 mm), carotid PSV and EDV values were different (P=0.033 and 0.018, respectively). Cavernosal PSV and EDV displayed no difference (P=0.816 and 0.123) while cavernosal IMT and percent change of cavernosal caliper were significantly different (P=0.014 and 0.018). Carotid PSV and EDV successfully mirrored respective measurements in cavernosal artery. However, carotid IMT failed to demonstrate such a correlation. Cavernosal IMT seems promising as an additional tool in the evaluation of cavernosal function.

The value of alpha-SMA in the evaluation of hepatic fibrosis severity in hepatitis B infection and cirrhosis development: a histopathological and immunohistochemical study.

AIMS: To investigate the value of alpha-smooth muscle actin (alpha-SMA), an indicator of stellate cell activation, in predicting fibrosis in chronic hepatitis B (CHB) patients. METHODS AND RESULTS: The liver biopsy specimens of 30 patients with a clinical diagnosis of CHB were obtained before treatment and scored by Knodell's histological activity index. The specimens were then immunohistochemically stained with alpha-SMA and semiquantitatively evaluated. Fibrosis and the immunoreactivity of alpha-SMA in the periportal, perisinusoidal and pericentral areas were compared. Fibrosis and necroinflammatory activity in CHB patients were significantly correlated (P =0.022). Furthermore, the degree of alpha-SMA expression and the scores of fibrosis (in periportal, perisinusoidal and pericentral areas) were highly correlated (P =0.000, 0.001, 0.000, respectively). CONCLUSIONS: In liver biopsy samples, alpha-SMA may prove to be a valuable marker in the evaluation of stellate cell activation and fibrosis progression and an early indicator of the development of fibrosis.