Erratum to "Withdrawal notice to the effectiveness of diaphragmatic breathing relaxation training for improving sleep quality among nursing staff during the COVID-19 outbreak: a before and after study" [Sleep Medicine X (2) (2020) 100026].

[This corrects the article DOI: 10.1016/j.sleepx.

The effectiveness of diaphragmatic breathing relaxation training for improving sleep quality among nursing staff during the COVID-19 outbreak: a before and after study.

Objectives: Recent studies have demonstrated that first-line nurses involved in the coronavirus disease-2019 (COVID-19) crisis may experience sleep disturbances. As breathing relaxation techniques can improve sleep quality, anxiety, and depression, the current study aimed to evaluate the effectiveness of diaphragmatic breathing relaxation training (DBRT) for improving sleep quality among nurses in Wuhan, China during the COVID-19 outbreak.

Methods: This study used a quasi-experimental (before and after) intervention strategy, with 151 first-line nurses from four wards in Leishenshan hospital.

DW14383 is an irreversible pan-FGFR inhibitor that suppresses FGFR-dependent tumor growth in vitro and in vivo.

Fibroblast growth factor receptor (FGFR) is a promising anticancer target. Currently, most FGFR inhibitors lack sufficient selectivity and have nonnegligible activity against kinase insert domain receptor (KDR), limiting their feasibility due to the serious side effects. Notably, compensatory activation occurs among FGFR1-4, suggesting the urgent need to develop selective pan-FGFR1-4 inhibitors.

[Intervention effect of Modified Dahuang Zhechong Granule on epididymal morphological changes in experimental varicocele rats].

Objective: To explore the effect of Modified Dahuang Zhechong Granule (MDZG) on the development and maturation of epididymal sperm in experimental varicocele (VC) rats.

Methods: Sixty SD male rats were randomly divided into six groups of equal number, sham operation, VC model, Aescuven forte, and low-, medium- and high-dose MDZG. The model of left VC was made by the Turner method in all the rats except those of the sham operation group, followed by treatment with 0.

[Evaluation on intestinal absorption of alkaloids extracted by different methods from Rhizoma Coptidis-Rheum rhabarum herbal pair via everted gut sacs].

The research aimed to evaluate the intestinal absorption of alkaloids extracted by decoction and alcohol extraction proces- ses from Rhizoma Coptidis-Rheum rhabarum herbal pair via everted gut sacs. Berberine, palmatine, coptisine and epiberberine were the main alkaloids in this herbal pair and taken as the standard indexes in the quantitative analysis with multi-components by single marker (QAMS) method, in order to calculate absorption rate constant (Ka) and evaluate intestinal absorption characteristics of these four alkaloids extracted by different extraction methods in different intestinal segments in rats. The results showed that the four alkaloids extracted by two different processes in high, medium and low doses had linear absorption properties in the small intestine segment, which conformed to zero-order absorption rate, intestinal segment than 0.

[Evaluation for extraction process of Shenqi Tongmai Yizhi particles based on antioxidant capacity in vitro and its spectrum-effect relation].

Based on DPPH method, the antioxidant activities of Shenqi Tongmai Yizhi particles with different extraction processes were compared. The contribution to the anti-oxidant capacity in vitro was explored by means of grey relational analysis on different chemical compositions in the fingerprint. The results showed that the IC₅₀ concentration values of water extract, water extract from alcohol precipitation, alcohol extract, and alcohol and water extract were 0.