[Triterpenoids in Sorbus pohuashanensis suspension cell treated with yeast extract].

This study induced biological stress in Sorbus pohuashanensis suspension cell(SPSC) with yeast extract(YE) as a bio-tic elicitor and isolated and identified secondary metabolites of triterpenoids produced under stress conditions. Twenty-six triterpenoids, including fifteen ursane-type triterpenoids(1-15), two 18,19-seco-ursane-type triterpenoids(16-17), four lupine-type triterpenoids(18-21), two cycloartane-type triterpenoids(22-23), and three squalene-type triterpenoids(24-26), were isolated and purified from the methanol extract of SPSC by chromatography on silica gel, MCI, Sephadex LH-20, and MPLC. Their structures were elucidated by spectroscopic analyses.

Predictive performance of renal resistive index, semiquantitative power Doppler ultrasound score and renal venous Doppler waveform pattern for acute kidney injury in critically ill patients and prediction model establishment: a prospective observational study.

Background: This study aimed to explore the performance of renal resistive index (RRI), semiquantitative power Doppler ultrasound (PDU) score and renal venous Doppler waveform (RVDW) pattern in predicting acute kidney injury (AKI) in critically ill patients and establish prediction models.

Methods: This prospective observational study included 234 critically ill patients. Renal ultrasound was measured within 24 h after intensive care unit admission.

Using 16S rDNA Sequencing Technology to Preliminarily Analyze Intestinal Flora in Children with Pneumonia.

Objective: We investigated changes in the intestinal flora of children with pneumonia (MPP).

Methods: Between September 2019 and November 2019, stool samples from 14 children with MPP from The Fourth Hospital of Baotou city, Inner Mongolia Autonomous Region, were collected and divided into general treatment (AF) and probiotic (AFY) groups, according to the treatment of "combined and tablets live". High-throughput sequencing was used to identify intestinal flora.

Reference values of impulse oscillometry (IOS) for healthy Chinese children aged 4-17 years.

Objective: To establish the predicted value of pulmonary function determined by impulse oscillometry (IOS) in children (4-17 years old) in China.

Methods: A total of 6270 healthy children aged 4-17 years in China were included. The Master Screen IOS pulmonary function device (Jaeger Co, Germany) was used to detect the respiratory impedance (Zrs), resonant frequency (Fres), respiratory system resistance (Rrs) and respiratory system reactance (Xrs) at various oscillation frequencies, and the indices above were analysed.

Hypoxic preconditioning reduces NLRP3 inflammasome expression and protects against cerebral ischemia/reperfusion injury.

Hypoxic preconditioning can protect against cerebral ischemia/reperfusion injury. However, the underlying mechanisms that mediate this effect are not completely clear. In this study, mice were pretreated with continuous, intermittent hypoxic preconditioning; 1 hour later, cerebral ischemia/reperfusion models were generated by middle cerebral artery occlusion and reperfusion.

Tea Polyphenols Prevent Sepsis-Induced Lung Injury via Promoting Translocation of DJ-1 to Mitochondria.

Background: Sepsis is the systemic inflammatory response syndrome caused by infection, which commonly targets on the lung. Tea polyphenols (TP) have many pharmacological activities, but their role in sepsis induced lung injury remains unclear.

Results: Injection of TP after cecal ligation and puncture (CLP) operation elevated the survival rate in a concentration dependent manner.

Procalcitonin for predicting catheter-associated bloodstream infection: A meta-analysis.

Objective: The predictive accuracies of procalcitonin (PCT) in the diagnosis of catheter-associated bloodstream infection (CABSI) vary widely. This meta-analysis aimed to explore the predictive value of PCT for CABSI.

Methods: We searched PubMed, EMBase, Web of Science, ScienceDirect, Cochrane Library, and studies published up to 10 March 2019.

[An epidemiological investigation of caries status of the first permanent molars of children aged 7-9 year in Taizhou City].

Purpose: To investigate caries prevalence of the first permanent molars of children aged 7-9 years in Taizhou city.

Methods: According to caries diagnostic criteria of WHO, 3653 primary school students in downtown areas of Taizhou city were surveyed; the data were statistically analyzed with SPSS 20.0 software package.

[Epidemiological survey of childhood asthma in 2010 in urban Baotou, China].

Objective: To investigate the prevalence rate of childhood asthma in 2010 in urban Baotou, China, as well as the characteristics of attacks and the status of diagnosis and treatment of childhood asthma.

Methods: More than 10 000 children (0-14 years) were selected from 3 secondary schools, 3 primary schools, 6 kindergartens, and 4 community vaccination sites in urban Baotou by cluster random sampling between September 2009 and August 2010. A standardized preliminary questionnaire was used for screening out suspected cases, which were then confirmed or excluded by a clinician; the confirmed cases underwent further questionnaire survey.