Efficacy and safety of low-intensity pulsed ultrasound (LIPUS) combined with tadalafil in the treatment of severe erectile dysfunction: a retrospective cohort study.

Background: Low-intensity pulsed ultrasound (LIPUS) is an effective and safe treatment for mild to moderate erectile dysfunction (ED). This study aimed to investigate the efficacy and safety of combining LIPUS with tadalafil in treating severe ED.

Methods: The data from 27 patients treated with LIPUS alone (group A) and 21 patients treated with a combination of LIPUS and daily 10 mg tadalafil (group B) were retrospectively analyzed.

An Insight of the First Community Infected COVID-19 Patient in Beijing by Imported Case: Role of Deep Learning-Assisted CT Diagnosis.

In the era of coronavirus disease 2019 (COVID-19) pandemic, imported COVID-19 cases pose great challenges to many countries. Chest CT examination is considered to be complementary to nucleic acid test for COVID-19 detection and diagnosis. We report the first community infected COVID-19 patient by an imported case in Beijing, which manifested as nodular lesions on chest CT imaging at the early stage.

Coal-burning endemic fluorosis is associated with reduced activity in antioxidative enzymes and Cu/Zn-SOD gene expression.

To study the effect of fluorine on the oxidative stress in coal-burning fluorosis, we investigated the environmental characteristics of coal-burning endemic fluorosis combined with fluorine content surveillance in air, water, food, briquette, and clay binder samples from Bijie region, Guizhou Province, southwest of China. The activities of antioxidant enzymes including copper/zinc superoxide dismutase (Cu/Zn-SOD), catalase (CAT), glutathione peroxidase (GSH-Px), and level of lipid peroxidation such as malondialdehyde (MDA) were measured in serum samples obtained from subjects residing in the Bijie region. Expression of the Cu/Zn-SOD gene was assessed by quantitative reverse transcriptase PCR (qRT-PCR).

[Effects of different die materials on fracture and failure behaviors of all-ceramic crowns].

Objective: To investigate the influence of different die materials on fracture strength and failure mode of IPS e.max Press crowns in mechanical test.

Methods: Thirty-six IPS e.