23 research outputs found
<span style="font-size:14.0pt;line-height: 115%;font-family:"Times New Roman";mso-fareast-font-family:"Times New Roman"; color:black;mso-ansi-language:EN-IN;mso-fareast-language:EN-IN;mso-bidi-language: HI" lang="EN-IN">Flavones from <i>Elsholtzia stauntonii</i></span>
1332-1334Structures of
two new f1avones isolated from Elsholtzia stauntonii Benth (Chinese name
"Muxiangru" , Berberidaceae) have been determined by spectroscopic methods
as 5-hydroxy-7,5'-dimethoxy-6,8-dimethyl -3',4'-methylenediox)' flavone 1
and 5-hydroxy-7 -methoxy-8-methyl -3',4' -methylenedioxy-5' -(3-methyl -but-2-enyl
)-3',4' -methylenedioxy flavone 2, along with two known flavones, 5-hydroxy-7,4'-dimethoxy-6
-methyl flavone 3, and 5-hydroxy-6,7-dimethoxyflavone 4
Two new flavone glycosides from <i>Polygonum viviparum </i>L.
167-169Two novel flavone glycosides,
5,4'-dimethoxyl-6,7-methylenedioxyflavone-3-O-β--xylopyranoside (viviparum A),
3'-hydroxy-5,4' -dimethoxy-6, 7-methylenedioxyflavone-3- O-β--xylopyranoside (viviparum
B), have been isolated along with seven known flavones and their structures
have been deduced on the basis of their spectral data and chemical
studies. This is the first report on the isolation of flavone
glycosides from Polygonum viviparum
Analysis of Genomic Alternative Splicing Patterns in Rat under Heat Stress Based on RNA-Seq Data
Heat stress is one of the most severe challenges faced in livestock production in summer. Alternative splicing as an important post-transcriptional regulation is rarely studied in heat-stressed animals. Here, we performed and analyzed RNA-sequencing assays on the liver of Sprague-Dawley rats in control (22 °C, n = 5) and heat stress (4 °C for 120 min, H120; n = 5) groups, resulting in the identification of 636 differentially expressed genes. Identification analysis of the alternative splicing events revealed that heat stress-induced alternative splicing events increased by 20.18%. Compared with other types of alternative splicing events, the alternative start increased the most (43.40%) after heat stress. Twenty-eight genes were differentially alternatively spliced (DAS) between the control and H120 groups, among which Acly, Hnrnpd and mir3064 were also differentially expressed. For DAS genes, Srebf1, Shc1, Srsf5 and Ensa were associated with insulin, while Cast, Srebf1, Tmem33, Tor1aip2, Slc39a7 and Sqstm1 were enriched in the composition of the endoplasmic reticulum. In summary, our study conducts a comprehensive profile of alternative splicing in heat-stressed rats, indicating that alternative splicing is one of the molecular mechanisms of heat stress response in mammals and providing reference data for research on heat tolerance in mammalian livestock
Effect of drying methods on the texture properties and active ingredients in Longan flesh
In order to determine the best drying method of longan flesh, the effects of different drying method (microwave drying, blast drying,vacuum freeze-drying) on the texture characteristics and active ingredients were compared. The results show that different drying methods will increase the hardness, cohesion and chewiness of longan flesh, and decrease the viscosity and elasticity to varying degrees. For active substances, the content of flavonoids and polyphenols is the largest under vacuum freeze-drying, followed by microwave drying and blast drying, but the loss of vitamin C is the opposite. On the whole, vacuum freeze-drying does not cause shrinkage of the flesh, and maintains good hardness, cohesion, chewiness and active ingredients. Comprehensive texture characteristics and changes in active ingredients, vacuum freeze drying is more suitable for drying and processing longan flesh
The A2DS2 Score as a Predictor of Pneumonia and In-Hospital Death after Acute Ischemic Stroke in Chinese Populations.
BACKGROUND AND PURPOSE:Stroke-associated pneumonia (SAP) is a common complication and an important cause of death during hospitalization. The A2DS2 (Age, Atrial fibrillation, Dysphagia, Sex, Stroke Severity) score was developed from the Berlin Stroke Registry and showed good predictive value for predicting SAP. We sought to identify the association between the A2DS2 score and SAP, and, furthermore, to identify whether the A2DS2 score was a predictor for in-hospital death after acute ischemic stroke in a Chinese population. METHODS:This was a retrospective study. 1239 acute ischemic stroke patients were classified to low A2DS2 group (0-4) and high A2DS2 score (5-10) group. Primary outcome was in-hospital SAP. Logistic regression analyses were performed to identify the association between the A2DS2 score and SAP, and also the association between the A2DS2 score and in-hospital death. RESULTS:The overall incidence rates of SAP and in-hospital mortality after acute ischemic stroke were 7.3% and 2.4%, respectively. The incidence rate of SAP in low and high A2DS2 score groups was separately 3.3% and 24.7% (P<0.001). During hospitalization, 1.2% patients in low score group and 7.8% patients in high score group died (P<0.001). Multivariate regression demonstrated that patients in high score group had a higher risk of SAP (OR = 8.888, 95%CI: 5.552-14.229) and mortality (OR = 7.833, 95%CI: 3.580-17.137) than patients in low score group. CONCLUSIONS:The A2DS2 score was a strong predictor for SAP and in-hospital death of Chinese acute ischemic stroke patients. The A2DS2 score might be a useful tool for the identification of patients with a high risk of SAP and death during hospitalization
Univariate analyses of factors related to in-hospital death.
<p>Univariate analyses of factors related to in-hospital death.</p