ObjectiveTo compare the differences in color， odor， coumarin content and microbial community composition of Angelicae Dahuricae Radix（ADR） during different drying processes， and to explore the correlation between changes in microbial community composition and changes in quality indexes of ADR. MethodsThe fresh ADR was processed at three drying temperatures（50， 70， 100 ℃） by drying and steaming cutting， semi-fresh cutting and drying， fresh cutting and drying， and sulfur fumigation methods. The color values of samples were extracted by Adobe Photoshop 2022 software and subjected to principal component analysis（PCA）， electronic nose was used to identify the odor information of medicinal powders and subjected to loadings analysis， PCA， and linear discriminant analysis（LDA）， and high performance liquid chromatography（HPLC） was used to determine the contents of five coumarins（bergapten， oxypeucedanin， imperatorin， phellopterin， isoimperatorin）. The samples for microbial detection were taken from fresh dried samples， 50 ℃（dried and steamed cut， sulfur fumigated） samples， and 100 ℃（dried and steamed cut） samples when the water content was 50% and 14%， respectively. And the changes of microbial community composition during processing were determined by high-throughput sequencing method. The relationship between the changes of microbial community composition and the changes of odor， color and active component content of ADR during drying process was analyzed by Pearson correlation analysis. ResultsThe color quantification results showed that an increase in drying temperature led to the decrease of brightness value（L）， and the increases of red-green value（a） and yellow-blue value（b）， and the change of processing method had no obvious effect on the color of medicinal materials. The results of odor quantification showed that W1S， W2S， W5S， W2W and W1W sensor were sensitive to the odor changes of ADR and could be used to distinguish ADR decoction pieces from different processing methods. The results of HPLC showed that the coumarin content of ADR decreased with the increase of drying temperature and the delay of processing time， the optimal processing method was drying and steaming cutting method， and the optimal temperature was 50 ℃. High-throughput sequencing results showed that the dominant bacteria in ADR during processing were Achromobacter， Agrobacterium， Nocardioides， Mycobacterium and Enterobacter， the dominant fungi were Coprinopsis， Meyerozyma and Apiotrichum. The results of correlation analysis showed that the quality indexes of ADR were positively correlated with Agrobacterium， Mycobacterium in bacteria， Candida in fungi， and negatively correlated with Bacillus in bacteria. ConclusionThere are significant differences in the color， odor， coumarin content and microbial community composition of ADR in different drying processes， and the best drying method is drying and steaming cutting at 50 ℃. The relative abundance changes of 9 bacterial genera and 4 fungal genera are closely related to the quality formation of ADR during the drying process.

Objective To investigate the expression of endothelin-1(ET-1)and placental growth factor(PLGF)in patients with preeclampsia in early pregnancy and its prognostic significance.Methods A total of 89 patients with preeclampsia who were admitted to No.904 Hospital of Joint Logistic Support Force of PLA from March 2019 to May 2021 were assigned to observation group.And 81 healthy pregnant women who underwent physical examination during the same period were enrolled as controls.Their clinical data were retrospectively analyzed.Serum ET-1 and PLGF levels were detected after admission.The correlation between serum ET-1 and PLGF levels was analyzed.All the participants were followed up until term pregnancy,and the prognoses of the two groups were compared.The patients in the observation group were subdivided into good prognosis group and poor prognosis group according to the prognoses.Multivariate logistic regression analysis was used to analyze the risk factors of poor prognosis in patients with preeclampsia.The receiver operating characteristic(ROC)curve was prepared,and the area under the curve(AUC)was used to evaluate the predictive value of serum ET-1 and PLGF levels for poor prognosis of preeclampsia patients.Results Serum ET-1 level in the observation group was higher than that in the control group,while serum PLGF level in the observation group was lower than that in the control group(both P<0.05).Pearson correlation analysis showed that there was a negative correlation between serum ET-1 and PLGF in both groups(P<0.05).The incidence of poor prognosis in the observation group was significantly higher than that in the control group(20.22%vs 7.41%,P<0.05).The proportion of severe cases,24-hour urine protein quantitation,uric acid,and serum ET-1 in the poor prognosis group were higher than those in the good prognosis group,while serum PLGF level in the poor prognosis group was lower than those in the good prognosis group(P<0.05).Multivariate logistic regression analysis showed that severe condition,24-hour urine protein quantitation,serum ET-1 and PLGF levels were risk factors for poor prognosis of preeclampsia patients(all P<0.05).The ROC curve showed that the AUC(95%CI)values of serum ET-1 and PLGF in predicting poor prognosis of preeclampsia were 0.825(0.709-0.906)and 0.771(0.651-0.852),respectively.Conclusion Patients with preeclampsia have higher ET-1 and lower PLGF than healthy pregnant women.Both ET-1 and PLGF can be used to predict the prognosis of patients with preeclampsia.

This paper systematically analyzed the understanding of qi from the perspectives of matter， energy， information and relationship reality， introduced the original holistic principle of systematic traditional Chinese medicine （TCM）， and considered the latest research results of qi （three-layer material theory）， trying to optimize the structure framework of the qi theoretical system and exhibit the occurrence and development rules of original qi. It emphasizes the hierarchical order of qi transformation following the original holistic principle， and takes this to guide the clinical understanding of “qi diseases”， helping doctors grasp the basic pathogenesis of the disease， that is abnormal qi movement， and helping them establish the awareness of providing systematic TCM treatment to patients by taking qi regulation as the key. At the same time， it discusses people within the structure of time and space， and points out that the treatment of diseases must comply with the principle of “the harmony of heaven， earth， and human beings”.

Mice ; Animals ; Spiral Ganglion/physiology* ; Cochlea/physiology* ; Neurons

The cochlear auditory epithelium contains two types of sound receptors, inner hair cells (IHCs) and outer hair cells (OHCs). Mouse models for labelling juvenile and adult IHCs or OHCs exist; however, labelling for embryonic and perinatal IHCs or OHCs are lacking. Here, we generated a new knock-in Fgf8^P2A-3×GFP/+ (Fgf8^GFP/+) strain, in which the expression of a series of three GFP fragments is controlled by endogenous Fgf8 cis-regulatory elements. After confirming that GFP expression accurately reflects the expression of Fgf8, we successfully obtained both embryonic and neonatal IHCs with high purity, highlighting the power of Fgf8^GFP/+. Furthermore, our fate-mapping analysis revealed, unexpectedly, that IHCs are also derived from inner ear progenitors expressing Insm1, which is currently regarded as an OHC marker. Thus, besides serving as a highly favorable tool for sorting early IHCs, Fgf8^GFP/+ will facilitate the isolation of pure early OHCs by excluding IHCs from the entire hair cell pool.
Animals ; Mice ; Hair Cells, Auditory, Inner ; Cochlea/metabolism* ; Hair Cells, Auditory, Outer/metabolism* ; Disease Models, Animal ; Fibroblast Growth Factor 8/metabolism*

Objective To observe the long-term efficacy of human fibrin sealant (FS) in the treatment of proximal type Ⅰ endoleak after endovascular aneurysm repair (EVAR) in abdominal aortic aneurysm (AAA).Methods The clinical data of 104 AAA patients with proximal type Ⅰ endoleak receiving EVAR + FS in Changhai Hospital from 2003 to 2012 was retrospectively analyzed,among those 77 cases were with less than 15 mm proximal neck,21 cases with greater than 60 degrees proximal neck angulation,37 cases with severe calcification or thrombosis in proximal neck.After failure of conventional endoleak therapy FS was injected through AAA catheter and long-term efficacy was evaluated by CTA during the follow-up.Results Intra-sac pressure decreased significantly after FS injection.Three patients (2.9％)died perioperatively.Postoperative 1'-,3' and 5 year survival rate was 91.8％,80.6％ and 60.2％respectively.Maximum diameter of AAA decreased from (58.78 ± 13.41) mm to (52.6-± 12.2) mm.There was no FS injection related complications.Conclusion Intra-sac injection of FS is an effective,economical and safe method for treating post-EVAR endoleak,especially for AAA with relatively short and twisted aneurysm neck.

BACKGROUND AND PURPOSE: There is increasing recognition of the importance of stroke in females to both clinical and public health. The natural course of stroke is worse in females than in males, but the evidence regarding sex disparities in the responses to thrombolysis in stroke patents is still controversial. We compared outcomes after thrombolysis treatment between females and males. METHODS: Clinical trials reported in the Embase, PubMed, and Cochrane Library electronic databases up to March 13, 2017 were included in this analysis. Two reviewers independently extracted the data and conducted quality assessments. Statistical tests were performed to check for heterogeneity and publication bias. Sensitivity analysis was also performed to evaluate the stability of the conclusions. RESULTS: Sixteen reports involving 60,159 patients were available for analysis. The female patients were a 0.89-fold [95% confidence interval (CI)=0.87–0.90, p < 0.001], 0.89-fold (95% CI=0.87–0.91, p < 0.001), and 1.24-fold (95% CI=1.11–1.36, p < 0.001) more likely to obtain good, excellent, and poor functional outcomes, respectively, with no significant difference in the complications of symptomatic intracranial hemorrhage among the sexes [risk ratios (RR)=0.99, 95% CI=0.92–1.07, p=0.81] after thrombolysis treatment. In addition, the prevalence of a good functional outcome did not differ significantly between females and males in the intra-arterial thrombolysis (IAT) group (RR=1.05, 95% CI=0.85–1.29, p=0.67) in a subgroup analysis. CONCLUSIONS: This study has demonstrated that females often exhibit a worse outcome than males after intravenous thrombolysis (IVT), whereas no relevant sex differences were found in outcome or recanalization after IAT, with safety regarding hemorrhage complications from thrombolysis being the same for the sexes. However, IVT should not be withheld from female stroke patients solely based on their sex before the findings are confirmed in further large-scale research.
Female ; Hemorrhage ; Humans ; Intracranial Hemorrhages ; Male ; Population Characteristics ; Prevalence ; Public Health ; Publication Bias ; Sex Characteristics ; Stroke*

Objective: To observe the cellular damage of low-dose combined exposure to Hg, Pb and Cd on hippocampal neurons in rat. Methods: SH-SY5Y cells were randomly divided into 8 groups by 2×2×2 factorial design: control group, Pb exposure group, Hg exposure group, Pb+Hg exposure group, Pb+Cd exposure group, Hg+Cd exposure group and Pb+Cd+Hg exposure group. And the cell viabilities were measured. On this basis, an animal model was established. Twenty eight-week-old SD pregnant rats were randomly divided into four groups by random number table, and five in each group: the control group(distilled water), 1-fold metal mixture exposure group (1×MM, poisoning solution containing mercury chloride 0.15 mg/L, lead acetate trihydrate 25 mg/L, cadmium chloride 7.5 mg/L), 5-fold metal mixture exposure group (5×MM, poisoning solution containing mercury chloride 0.75 mg/L, lead acetate trihydrate 125.00 mg/L, cadmium chloride 37.50 mg/L), 10-fold metal mixture exposure group (10×MM, poisoning solution containing mercury chloride 1.50 mg/L, lead acetate trihydrate 250.00 mg/L, cadmium chloride 75.00 mg/L). Pregnant rats drank water until delivery. Twenty male pups were selected and exposed to these metals through breast milk until weaned. The heavy metals dose of poisoning water was adjusted, and then the weaned rats were exposed to heavy metals via drinking poisoning water until adulthood (postnatal day 83). The blood samples and brain hippocampus samples were collected to observe the ultrastructural changes of hippocampus, and to determine the levels of Hg, Pb and Cd in blood. In addition, apoptosis rate and fluorescence intensity of reactive oxygen species and intracellular free calcium concentration ([Ca²⁺]_i) in hippocampal neurons were measured. Results: Cellular factorial design analysis showed that Hg+Pb+Cd (at no observed adverse effect level, 1.0, 0.5 and 0.1 μmol/L, respectively)had a interaction on cell viability after 48 or 72 hours of combined exposure (P<0.05). The results of ultrastructure showed that mitochondria decreased, ridges and matrixes gradually dissolved in rat hippocampal neurons of 5×MM group; nuclear chromatin aggregated, more ridges and matrixes dissolved and the mitochondria also decreased in rat hippocampal neurons of 10×MM group. The concentration of Hg, Pb and Cd in the blood of 1×MM group, 5×MM group and 10×MM group were higher than those in the control group, and the differences were statistically significant (P<0.001). There was no significant difference in apoptosis rate between the 1×MM group and the control group. The apoptosis rate of 5×MM group and 10×MM group was higher than that in the control group, and the differences were statistically significant (P<0.001). There was no statistically significant difference in the fluorescence intensity of reactive oxygen species in hippocampal neurons of the 1×MM group and the control group. The fluorescence intensity of reactive oxygen species in the 5×MM group and the 10×MM group was higher than that in the control group, the difference was statistically significant (P<0.05). There was no significant difference in the fluorescence intensity of [Ca²⁺]_i between the 1×MM group and the control group. The fluorescence intensity values of [Ca²⁺]_i in the 5×MM group and the 10×MM group were higher than the control group, the differences were statistically significant (P<0.001). Conclusion Low-level combined exposure to Hg, Pb, and Cd caused synergistic neurotoxic damage, and the process may be related to the changes of neuronal apoptosis, reactive oxide species, and [Ca²⁺]_i levels.

Objective To prepare a new type of magnetic fluorescent nanoparticles and characterize them and analyze their applications in the field of biology and medicine.Methods In this paper,magnetic fluorescent nanoparticles-Fe3O4@PEI@RN were prepared by chemical synthesis.The content of the main components of the prepared particles was measured.The particles' size was analyzed by dynamic light scattering analysis,the effect of pH on the fluorescence properties was measured by fluorescence analysis,and some common metal ions,proteins and DNA were investigated whether they would interfere the particles'properties.Results The content of Fe3O4@PEI@RN showed that the autom of Fe was 14.1 mg/mL,rhodamine B was 7.6 mg/mL and napH thalimide was 94.8 mg/mL.The dynamic light scattered that the average particle diameter of the magnetic fluorescent nanoparticles was 224 nm.Fluorescence analysis showed that the fluorescence ratio F of Fe3O4@PEI@RN at 532 nm and 574 nm were pH-sensitive with a pKa of 6.73.When the concentration of common metal ions was 5 × 10-6,they did not change their fluorescence determinations,and when the protein concentration was less than 14 mg/mL and the DNA concentration was less than 20 mg/mL,they did not interfere with their determinations.Conclusion A new type of magnetic fluorescent nanomaterials is successfully prepared.Its good fluorescence shows it has great potential in the field of biomedicine.

Objective To prepare a new type of magnetic fluorescent nanoparticles and characterize them and analyze their applications in the field of biology and medicine.Methods In this paper,magnetic fluorescent nanoparticles-Fe3O4@PEI@RN were prepared by chemical synthesis.The content of the main components of the prepared particles was measured.The particles' size was analyzed by dynamic light scattering analysis,the effect of pH on the fluorescence properties was measured by fluorescence analysis,and some common metal ions,proteins and DNA were investigated whether they would interfere the particles'properties.Results The content of Fe3O4@PEI@RN showed that the autom of Fe was 14.1 mg/mL,rhodamine B was 7.6 mg/mL and napH thalimide was 94.8 mg/mL.The dynamic light scattered that the average particle diameter of the magnetic fluorescent nanoparticles was 224 nm.Fluorescence analysis showed that the fluorescence ratio F of Fe3O4@PEI@RN at 532 nm and 574 nm were pH-sensitive with a pKa of 6.73.When the concentration of common metal ions was 5 × 10-6,they did not change their fluorescence determinations,and when the protein concentration was less than 14 mg/mL and the DNA concentration was less than 20 mg/mL,they did not interfere with their determinations.Conclusion A new type of magnetic fluorescent nanomaterials is successfully prepared.Its good fluorescence shows it has great potential in the field of biomedicine.