Background: Septic shock is one of the major healthcare problems, affecting millions of people around the world every year. The object of this study is to find the best kind of regimen of vasopressors treatment in septic shock. Methods: The PubMed, and the Web of Science were used to find the included studies. Stata 15.1 was performed to this systemic review and network meta-analysis. Results: After searching and screening the articles, finally we included articles about 31 randomized controlled trials (RCTs), 11 arms (dopamine, dopexamine, epinephrine, norepinephrine, norepinephrine + dobutamine, norepinephrine + dopexamine, norepinephrine + epinephrine, norepinephrine + vasopressin, phenylephrine, terlipressin, vasopressin) and total 5,928 patients with septic shock. Compared with dopamine, the regimens (epinephrine, norepinephrine, norepinephrine + dobutamine, and vasopressin) have significantly lower 28-day mortality. Ranking the regimens in the order of estimated probabilities of each treatment by using the network meta-analysis for 28-day mortality, the result showed that norepinephrine + dopexamine was the best one (57.3%), followed by norepinephrine + epinephrine (14.8%), norepinephrine + dobutamine (10.9%), dopexamine (11.2%), terlipressin (9.8%), norepinephrine + vasopressin (2.4%), phenylephrine (1.2%), epinephrine (1.0%), vasopressin (0.5%), norepinephrine (0.0%), and dopamine (0.0%). In addition, for the results of arrhythmia and increased heart rate, the combination regimens groups did not showed inferiority to other single regimen groups. Conclusions: Single dopamine had significantly higher 28d mortality. Combination regimens of vasopressors accounted for the best three therapeutic regimens. In treating patients with septic shock, using combining regimens probably gets more benefits.

The mechanical barrier and low permeability of seed coat and endosperm may be the main obstacle to the imbibition and dormancy release of Tilia miqueliana seeds. MRI, SEM, TEM and PSD were used to study the structure, water permeability and metabolism of control seeds and H 2 SO 4 treated seeds during imbibition and dormancy release. The results showed that H 2 SO 4 treatment greatly improved the permeability of seed coat and endosperm, accelerated the metabolism of high electron density substances in endosperm cells, and shortened the process of seed dormancy release and germination. At the same time, protoplasts that eventually developed into vascular bundles were surprisingly found in cotyledons and radicles.

• Background  Sinojackia xylocarpa Hu is the first new genus published by a Chinese botanist, which belongs to the genus Sinojackia Hu of Styracaceae[1]. It is a national key second-class endangered species [2]. It is only distributed in th