Engineered phage with cell-penetrating peptides for intracellular bacterial infections.

infection is a significant threat to global public health, and the increasing prevalence of antibiotic resistance exacerbates the situation. Therefore, finding new and effective ways to combat this pathogen is essential. Phages are natural predators of bacteria and can be used as an alternative to antibiotics to kill specific bacteria, including drug-resistant strains.

Clinical diagnosis of severe COVID-19: A derivation and validation of a prediction rule.

Background: The widespread coronavirus disease 2019 (COVID-19) has led to high morbidity and mortality. Therefore, early risk identification of critically ill patients remains crucial.

Aim: To develop predictive rules at the time of admission to identify COVID-19 patients who might require intensive care unit (ICU) care.

[Characteristics of rain season atmospheric PM2.5 concentration and its water-soluble ions contents in forest parks along an urban-rural gradient in Guangzhou City of South China].

During the rainy season (April-September) of 2012, the atmospheric particulate matter with a diameter less than 2.5 mm (PM2.5) were sampled from the forest parks in the urban area, suburban area, and rural area of Guangzhou City.

[Effect of tanshinone II A on the calcineurin activity in proliferating vascular smooth muscle cells of rats].

Objective: To study the effect of tanshinone II A (TSN) on angiotensin II (Ang II) induced proliferation of vascular smooth muscle cells (VSMCs).

Methods: VSMCs were cultured by explant attached method, and induced to proliferative cell model with Ang II. The effect of TSN in different concentrations on calcineurin (CaN) activity was detected by enzyme reaction phosphorus measurement; the CaN mRNA expression was detected by RT-PCR; and the expression of proliferating cell nuclear antigen (PCNA) were observed by immunocytochemical method.