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1.
Article in Chinese | WPRIM | ID: wpr-930965

ABSTRACT

Objective:To investigate the influence of bacterial outer membrane vesicles (OMVs) tumor vaccine on tumor cell proliferation and CD8 + T cell infiltration of mouse with pancreatic cancer. Methods:The experimental study was conducted. The ovalbumin (OVA) lentivirus vector plasmid pLV-EF1a-hluc-P2A-mNeongreen-CMV-OVA-3Xflag-P2A-puro was used to construct the mouse pancreatic cancer Pan02-OVA cells. The ClyA-Catchers-OMVs (CC-OMVs) originated from Escherichia coli and labeled antigenic peptide SpyTag-OVA were used to construct the OMVs tumor vaccine. Mouse CD8 + T cells were stimulated by OMVs tumor vaccine, and the effects of OMVs tumor vaccine on inhibiting pancreatic cancer cells proliferation and stimulating CD8 + T cell infiltration were analy-zed by in vitro cell killing assay, including the OMVs tumor vaccine stimulated T cell group and the control T cell group, subcutaneous pancreatic cancer model, including the OMVs tumor vaccine group and the control group, and immunohistochemical staining. Observation indicators: (1) identification of mouse pancreatic cancer Pan02-OVA cells; (2) morphological observation of CC-OMVs; (3) inhibi-tion of mouse pancreatic cancer Pan02-OVA cells by OMVs tumor vaccine specific T cells; (4) inhibi-tion of mouse pancreatic cancer by OMVs tumor vaccine; (5) CD8 + T cell infiltration in pancreatic cancer tissue of mouse stimulated by OMVs tumor vaccine. Measurement data with normal distribu-tion were represented as Mean± SD, and comparison between groups was analyzed using the t test. Count data were described as absolute numbers or percentages. Results:(1) Identification of mouse pancreatic cancer Pan02-OVA cells. Results of laser scanning confocal microscopy showed that the mNeongreen fluorescence was expressed in Pan02-OVA cells infected with the OVA lentivirus vector plasmid of pLV-EF1a-hluc-P2A-mNeongreen-CMV-OVA-3Xflag-P2A-puro. Results of Flow cytometry showed that using the mouse pancreatic cancer Pan02 cells as references, the protein expression rate of Flag on the Pan02-OVA cells was 90.7%. (2) Morphological observation of CC-OMVs. Results of transmission electron microscopy analysis showed that the CC-OMVs were in spherical shape, with a diameter <50 nm. (3) Inhibition of mouse pancreatic cancer Pan02-OVA cells by OMVs tumor vaccine specific T cells. Results of cell proliferation toxicity test showed that the absorbance at 450 nm of mouse pancreatic cancer Pan02-OVA cells was 0.41±0.12 and 1.05±0.15 in the OMVs tumor vaccine-stimulated T cell group and the control T cell group, respectively, showing a significant difference between the two groups ( t=9.54, P<0.05). (4) Inhibition of mouse pancreatic cancer by OMVs tumor vaccine. The weight of subcutaneous tumor tissue in the back of mouse was (81±10)g and (153±17)g in the OMVs tumor vaccine group and the control group, respectively, showing a significant difference between the two groups ( t=8.26, P<0.05). (5) CD8 + T cell infiltration in pancreatic cancer tissue of mouse stimulated by OMVs tumor vaccine. Results of immuno-histochemical staining showed that the numbers of CD8 + T cells staining in the mouse back subcu-taneous tumor tissues was 28.7±3.5 and 9.3±1.5 in the OMVs tumor vaccine group and the control group, respectively, showing a significant difference between the two groups ( t=8.74, P<0.05). Conclusion:Bacterial OMVs tumor vaccine can inhibit proliferation of pancreatic cancer cells and increase the numbers of CD8 + T cells infiltrated in pancreatic cancer tissue of mouse.

2.
Article in Chinese | WPRIM | ID: wpr-927985

ABSTRACT

Three sesquiterpenoids were isolated and purified from the 95% ethanol extract of Atractylodis Macrocephalae Rhizoma by column chromatography on silica gel, Sephadex LH-20, ODS, and high-performance liquid chromatography(HPLC). Their chemical structures were identified on the basis of spectroscopic analysis and physiochemical properties as(7Z)-8β,13-diacetoxy-eudesma-4(15),7(11)-diene(1), 7-oxo-7,8-secoeudesma-4(15),11-dien-8-oic acid(2), and guai-10(14)-en-11-ol(3). Compounds 1 and 2 are new compounds and compound 3 was obtained from Compositae family for the first time. Compounds 1, 2, and 3 showed weak inhibitory activities against sterol regulatory element-binding proteins(SREBPs).


Subject(s)
Atractylodes/chemistry , Drugs, Chinese Herbal/chemistry , Rhizome/chemistry , Sesquiterpenes, Eudesmane/pharmacology , Sterol Regulatory Element Binding Proteins/antagonists & inhibitors
3.
Chinese Journal of Biotechnology ; (12): 1565-1575, 2022.
Article in Chinese | WPRIM | ID: wpr-927801

ABSTRACT

8-prenylnaringenin (8-PN) is a potent estrogen with high medicinal values. It also serves as an important precursor for many prenylated flavonoids. Microbial synthesis of 8-PN is mainly hindered by the low catalytic activity of prenyltransferases (PTS) and insufficient supply of precursors. In this work, a SfN8DT-1 from Sophora flavescens was used to improve the efficiency of (2S)-naringenin prenylation. The predicted structure of SfN8DT-1 showed that its main body is comprised of 9 α-helices and 8 loops, along with a long side chain formed by nearly 120 amino acids. SfN8DT-1 mutants with different side-chain truncated were tested in Saccharomyces cerevisiae. A mutant expressing the truncated enzyme at K62 site, designated as SfND8T-1-t62, produced the highest 8-PN titer. Molecular docking of SfN8DT-1-t62 with (2S)-naringenin and dimethylallyl diphosphate (DMAPP) showed that K185 was a potentially crucial residue. Alanine scanning within a range of 0.5 nm around these two substrates showed that the mutant K185A may decrease its affinity to substrates, which also indicated K185 was a potentially critical residue. Besides, the mutant K185W enhanced the affinity to ligands implied by the simulated saturation mutation, while the saturated mutation of K185 showed a great decrease in 8-PN production, indicating K185 is vital for the activity of SfN8DT-1. Subsequently, overexpressing the key genes of Mevalonate (MVA) pathway further improved the titer of 8-PN to 31.31 mg/L, which indicated that DMAPP supply is also a limiting factor for 8-PN synthesis. Finally, 44.92 mg/L of 8-PN was produced in a 5 L bioreactor after 120 h, which is the highest 8-PN titer reported to date.


Subject(s)
Dimethylallyltranstransferase/metabolism , Flavonoids/metabolism , Molecular Docking Simulation , Prenylation , Saccharomyces cerevisiae/metabolism , Sophora/metabolism
4.
Chinese Critical Care Medicine ; (12): 990-993, 2021.
Article in Chinese | WPRIM | ID: wpr-909440

ABSTRACT

Objective:To investigate the value of plasma syndecan-1 (SDC-1) combined with lung ultrasonography in evaluating the degree of extravascular lung water in patients with acute respiratory distress syndrome (ARDS).Methods:From July 2018 to July 2019, 50 patients with ARDS admitted to the department of intensive care unit of Wuxi People's Hospital Affiliated to Nanjing Medical University were enrolled. After admission, pulse indicator continuous cardiac output (PiCCO) catheter was established for all patients. PiCCO indexes, including extravascular lung water index (EVLWI) and pulmonary vascular permeability index (PVPI) were monitored by one doctor. Another doctor performed lung ultrasound examination, and calculated the sum of the number of B-lines under 10 ultrasound sections of upper blue point, lower blue point, diaphragm point, Plaps point and rear blue point of both lungs. Then the level of plasma SDC-1 was detected by enzyme linked immunosorbent assay (ELISA). Pearson correlation method was used to analyze the correlation between the number of ultrasonic B-lines, plasma SDC-1 level and EVLWI and PVPI. Taking 10 mL/kg EVLWI as the boundary value, the degree of pulmonary edema in patients with ARDS was divided into mild pulmonary edema and severe pulmonary edema. The receiver operator characteristic curve (ROC curve) was drawn, and the number of B-lines, SDC-1 and the predictive value of the combination of the above two indicators on the severity of pulmonary edema in patients with ARDS were analyzed.Results:The cardiac index (CI) and central venous pressure (CVP) of 50 patients with ARDS were (46.84±6.00) mL·s -1·m -2 and (8.12±1.80) mmHg (1 mmHg = 0.133 kPa), cardiogenic pulmonary edema was excluded. In 50 patients with ARDS, EVLWI was (10.82±2.92) mL/kg, PVPI was 3.02±0.69, the number of ultrasound B-lines was 40.90±13.05, and plasma SDC-1 was (568.25±118.14) μg/L. Pearson correlation analysis showed that the number of ultrasound B-lines in patients with ARDS was significantly positively correlated with EVLWI and PVPI ( r1 = 0.802, r2 = 0.799, both P < 0.01). Plasma SDC-1 was also positively correlated with EVLWI and PVPI ( r1 = 0.732, r2 = 0.576, both P < 0.01). ROC curve analysis showed that the number of B-lines and SDC-1 had good predictive value for the severity of pulmonary edema in patients with ARDS. The area under ROC curve (AUC) and 95% confidence interval (95% CI) were 0.891 (0.803-0.979) and 0.875 (0.772-0.978), respectively. When the cut-off of B-lines was 40.50, the sensitivity and specificity were 82.1% and 86.4%, respectively. When the cut-off of SDC-1 was 559.37 μg/L, the sensitivity and specificity were 85.7% and 81.8%, respectively. Combining the number of B-lines with SDC-1 could further improve the predictive value of pulmonary water in patients with ARDS. The AUC (95% CI) was 0.958 (0.890-1.000), and the sensitivity and specificity were 92.9% and 91.8%, respectively. Conclusions:The level of plasma SDC-1 and the number of pulmonary ultrasonic B-lines have a good correlation with the degree of extravascular lung water in patients with ARDS. The combined application of the two noninvasive indexes can be used to evaluate the degree of extravascular lung water in patients with ARDS.

5.
Chinese Critical Care Medicine ; (12): 832-837, 2021.
Article in Chinese | WPRIM | ID: wpr-909413

ABSTRACT

Objective:To investigate the main postoperative complications, causes of death and the risk factors for survival in patient with benign end-stage lung diseases within 1 year after lung transplantation.Methods:A retrospective analysis was conducted to collect the clinical data of 200 patients with benign end-stage lung disease who underwent lung transplantation admitted to Wuxi People's Hospital Affiliated to Nanjing Medical University from May 2017 to October 2018. The main postoperative complications, survival and causes of death within 1 year after operation were analyzed. The Kaplan-Meier method was used to plot survival curves, and the Log-Rank test was used to compare the influence of factors, including recipient's gender, use of marginal donor lung, primary disease, preoperative combination of moderate to severe pulmonary hypertension (PAH), intraoperative extracorporeal membrane oxygenation (ECMO) support, surgical methods, intraoperative massive blood loss, postoperative complications [infection, primary graft dysfunction (PGD), acute rejection], on 1-year survival in patients who underwent lung transplantation. The multivariate Cox proportional hazards regression model was used to evaluate the risk factors of death within 1 year after lung transplantation.Results:Two hundred patients underwent successful lung transplantation. The major postoperative complications within 1 year after transplantation included infection in 131 patients, PGD in 20 patients, acute rejection in 57 patients, anastomotic complication in 26 patients and others (new onset diabetes, osteoporosis, etc.) in 53 patients. The 3-month, 6-month, and 1-year postoperative cumulative survival rates were 81.5%, 80.0% and 77.5%, respectively. Forty-five patients died during 1 year after operation, among whom 14 died of infection, 7 died of PGD, 8 died of acute rejection, 4 died of anastomotic complication, 3 died of cardio-cerebrovascular accident, 3 died of multiple organ failure, 2 died of respiratory failure and 4 died of other causes (traffic accident, etc.). The Kaplan-Meier survival analysis showed that recipient's gender, idiopathic pulmonary fibrosis (IPF) as the primary disease, preoperative combination of moderate and severe PAH, intraoperative ECMO support, intraoperative massive blood loss, postoperative complications (infection, PGD, acute rejection) were influencing factors for postoperative 1-year survival rate. The multivariate Cox regression model showed that male was the protective factor [hazard ratio ( HR) = 0.481, 95% confidence interval (95% CI) was 0.244-0.947, P = 0.034], IPF as the primary disease ( HR = 2.667, 95% CI was 1.222-5.848, P = 0.014), intraoperative use of ECMO support ( HR = 1.538, 95% CI was 0.787-3.012, P = 0.028), massive blood loss during surgery ( HR = 2.026, 95% CI was 0.976-4.205, P = 0.045) and postoperative infection ( HR = 3.138, 95% CI was 1.294-7.608, P = 0.011), PGD ( HR = 1.604, 95% CI was 0.464-5.539, P = 0.004), and acute rejection ( HR = 1.897, 95% CI was 0.791-4.552, P = 0.015) were the independent risk factors for death within 1 year after transplantation. Conclusions:One-year survival rates after lung transplantation are affected by recipient's gender, primary disease, preoperative combination of moderate and severe PAH, intraoperative ECMO support, intraoperative massive blood loss, and postoperative complications (infection, PGD, acute rejection). The male is the protective factor, while IPF as the primary disease, intraoperative ECMO support, massive blood loss during surgery and postoperative complications (infection, PGD, acute rejection) are independent risk factors for death within 1 year after lung transplantation.

6.
Article in Chinese | WPRIM | ID: wpr-942615

ABSTRACT

Objective: To investigate the clinical phenotype, treatment and prevention of Van der Hoeve syndrome, and analyze the variation characteristics of its related gene COL1A1. Methods: Hearing and sequencing data of syndromic deafness patients who had undergone genetic testing for deafness at the Chinese People's Liberation Army General Hospital since January 2008 to October 2020 were retrospectively reviewed. The variation of the COL1A1 gene and return visits to traceable patients and families were summarized, the disease progress and clinical treatment effects were analyzed, and the prevention strategies were discussed. Results: A total of 7 patients with COL1A1 gene mutation underwent clinical intervention. The mutation sites were c.1342A>T (p.Lys448*), c.124C>T (p.Gln42*), c.249insG(p.Ala84*), c.668insC(p.Gly224*), c.2829+1G>C, c.1081C>T (p.Arg361*), c.1792C>T (p.Arg598*), of which c.1081C>T and c.1792C>T had been previously reported, and the remaining 5 were novo mutations that have not been reported. All the 7 probands underwent stapes implantation and received genetic counseling and prevention guidance. Conclusions: Van der Hoeve syndrome belongs to osteogenesis imperfecta type Ⅰ. The disease has high penetrance. Timely surgical intervention for hearing loss can improve the life quality in patients. Accurate genetic counseling and preimplantation genetic diagnosis can achieve the primary prevention for the disease.


Subject(s)
Hearing , Hearing Tests , Humans , Osteogenesis Imperfecta , Retrospective Studies , Stapes
7.
Article in Chinese | WPRIM | ID: wpr-942197

ABSTRACT

Cryo-electron microscopy (cryo-EM) imaging has the unique potential to bridge the gap between cellular and molecular biology. Therefore, cryo-EM three-dimensional (3D) reconstruction has been rapidly developed in recent several years and applied widely in life science research to reveal the structures of large macromolecular assemblies and cellular complexes, which is critical to understanding their functions at all scales. Although the technical breakthrough in recent years, for example, the introduction of the direct detection device (DDD) camera and the development of cryo-EM software tools, made the three cryo-EM pioneers share the 2017 Nobel Prize, several bottleneck problems still exist that hamper the further increase of the resolution of single-particle reconstruction and hold back the application of in situ subnanometer structure determination by cryo-tomography. Radiation damage is still the key limiting factor in cryo-EM. In order to minimize the radiation damage and preserve as much resolution as possible, the imaging conditions of a low dose and weak contrast make cryo-EM images extremely noisy with very low signal-to-noise ratios (SNR), generally about 0.1. The high noise will obscure the fine details in cryo-EM images or reconstructed maps. Thus, a method to reduce the level of noise and improve the resolution has become an important issue. In this paper, we systematically reviewed and compared some robust filters in the cryo-EM field of two aspects, single-particle analysis (SPA) and cryo-electron tomography (cryo-ET), and especially studied their applications, such as, 3D reconstruction, visualization, structural analysis, and interpretation. Conventional approaches to noise reduction in cryo-EM imaging include the use of Gaussian, median, and bilateral filters, among other means. A Gaussian filter selects an appropriate filter kernel to conduct spatial convolution with a noisy image. Although noise with larger standard deviations in cryo-EM images can be suppressed and satisfactory performance is achieved in certain cases, this filter also blurs the images and over-smooths small-scale image features. This is especially detrimental when precise quantitative information needs to be extracted. Unlike a Gaussian filter, a median filter is based on the order statistics of the image and selects the median intensity in a window of the adjacent pixels to denoise the image. Although this filter is robust to outliers, it suffers from aliasing problems that possibly result in incorrect information for cryo-EM structure interpretation. A bilateral filter is a nonlinear filter that performs spatial weighted averaging and is more selective in the pixels allowing to contribute to the weighted sum, excluding the high frequency noise from the smoothing process. Thus, this filter can be used to smooth out noise while maintaining the edge details, which is similar to an anisotropic diffusion filter, and distinct from a Gaussian filter but its utility will be limited when the SNR of a cryo-EM image is very low. Generally, spatial filtering methods have the disadvantage of losing image resolution when reducing noise. A wavelet transform can exploit the wavelet's natural ability to separate a signal from noise at multiple image scales to allow for joint resolution in both the spatial and frequency domains, and thus has the potential to outperform existing methods. The modified wavelet shrinkage filter we developed can offer a remarkable improvement in image quality with a good compromise between detail preservation and noise smoothing. We expect that our review study on different filters can provide benefits to cryo-EM applications and the interpretation of biological structures.


Subject(s)
Algorithms , Cryoelectron Microscopy , Image Processing, Computer-Assisted , Normal Distribution , Signal-To-Noise Ratio , Tomography, X-Ray Computed
8.
Article in Chinese | WPRIM | ID: wpr-930199

ABSTRACT

Objective:To explore the clinical value of peripheral blood neutrophil-to-lymphocyte ratio (NLR) combined with neutrophil extracellular traps (NETs) in predicting liver injury in patients with sepsis.Methods:A prospective observational study was conducted. The patients who met the diagnostic criteria for sepsis 3.0 admitted to the Department of Intensive Care Unit in Wuxi People’s Hospital Affiliated to Nanjing Medical University from March 2019 to June 2020 were selected as the research objects. The basic informations of the patients were recorded. NLR based on blood routine at admission was calculated. PicoGreen fluorescence quantitative detection kit was used to detect the quantitative level of free DNA (cf-DNA/NETs) in the peripheral plasma of patients at admission. According to whether liver injury occurred, the patients were divided into the sepsis without liver injury group and sepsis with liver injury group. Binary Logistics regression analysis was used to predict the risk factors of sepsis with liver injury. The receiver operating characteristic (ROC) curve was drawn. The value of NLR, NETs, NLR combined with NETs in predicting liver injury in patients with sepsis was analyzed.Results:A total of 122 patients with sepsis were enrolled, of which 45 patients suffered from septic liver injury, with an incidence rate of 36.89%. The NLR of the sepsis wth liver injury group was (21.63 ± 4.71), the NLR of the sepsis without injury injury group was (15.03 ± 4.71), and the NETs level of the sepsis with liver injury group was (505.86 ± 250.05) μg/L, the level of NETs in the sepsis without liver injury group was (179.27 ± 67.20) μg/L, and the differences between the two groups were statistically significant (all P<0.05). Binary logistic regression analysis found that NLR ( OR=1.470, 95% CI: 1.121-1.926, P<0.05) and NETs ( OR=1.018, 95% CI: 1.005-1.030, P<0.05) at admission were the independent risk factors for liver injury in patients with sepsis. The best cut-off value of NLR was 16.68, and the best cut-off value of NETs was 317 μg/L. The sensitivity of combined application of NLR and NETs to predict liver injury in patients with sepsis was 77.78%, specificity was 98.70%, the area under the curve was 0.930, and the Youden Index was 0.765. Conclusions:The peripheral blood NLR and NETs levels are independent risk factors for liver injury in patients with sepsis. The combined application of NLR and NETs has a certain predictive value for liver injury in patients with sepsis. Taking NLR of 16.68 and NETs of 317 μg/L as the cut-off values, they can be used as early warning indicators to predict liver injury in patients with sepsis.

9.
Article in Chinese | WPRIM | ID: wpr-921551

ABSTRACT

Objective To analyze the characteristics of high-risk maternal patients and evaluate the multidisciplinary medical care system we established correspondingly. Method We collected and analyzed the medical records of high-risk maternal patients who received medical care from January 1,2017 to December 31,2020 in Peking Union Medical College Hospital. Results Ninety-eight high-risk maternal patients were included in this study,and 84.7%(83/98)of them were combined with different severe systemic diseases.Under the multidisciplinary medical care system,91 patients showed improved conditions and were discharged,and the other 7 cases had poor prognosis. Conclusions General tertiary hospitals in Beijing are receiving maternal patients with more high-risk complications.Considering the high risk and diverse diseases of maternal patients admitted to our hospital,we established a medical care system composed of a multidisciplinary panel of experts for high-risk maternal patients to improve the medical care and prognosis of the patients with high efficiency.


Subject(s)
Hospitalization , Hospitals, General , Humans , Prognosis , Retrospective Studies , Tertiary Care Centers
10.
Chinese Journal of Biotechnology ; (12): 2838-2849, 2020.
Article in Chinese | WPRIM | ID: wpr-878533

ABSTRACT

(2S)-taxifolin is an important flavonoid that has anti-inflammatory and anti-oxidation effects. It is widely used in pharmaceutical and nutraceutical industries. Flavone 3-hydroxylase (F3H) can catalyze the synthesis of (2S)-taxifolin and other 3-hydroxylated flavonoids from (2S)-eriodictyol. Due to the low catalytic efficiency of F3H, the titer of many 3-hydroxyflavones, such as taxifolin, synthesized by microbial method is relatively low. In this study, a SmF3H was identified from the transcriptome of Silybum marianum (L.) Gaertn. The results of fermentation showed that SmF3H can catalyze the flavone 3-hydroxylation reaction, and its catalytic efficiency was significantly higher than that of commonly used SlF3H from Solanum lycopersicum. Six promoters with different transcription strength were selected to optimize the synthesis pathway from the flavonoid precursor (2S)-naringenin to (2S)-taxifolin. The results showed that the highest titer of (2S)-taxifolin (695.90 mg/L in shake flask) could be obtained when the P(GAL7) promoter was used to control the expression of SmF3H. The titer of (2S)-taxifolin was further improved to 3.54 g/L in a 5-L fermenter, which is the highest titer according to current available literatures.


Subject(s)
Antioxidants , Flavonoids , Milk Thistle , Quercetin/analogs & derivatives
11.
Article in Chinese | WPRIM | ID: wpr-871583

ABSTRACT

Objective:The purpose of this study was to explore new method for evaluating the severity of extravascular lung water in patients after bilateral lung transplantation.Methods:The study was performed in 50 patients after bilateral lung transplantation in our hospital from 2017 to 2018. Picco were implanted during the operation .Two hours after the operation, a doctor monitored the index of EVLWI and PVPI.At the same time, another doctor carried out examination of lung ultrasonography and Calculated the numbers of B line. After ultrasonography, the doctor used ELISA to determine the level of SDC-1.Results:EVLWI were significantly correlated with the number of B-line and the level of SDC-1 ( RS=0.833, RS=0.747, P<0.05), PVPI were significantly correlated with the number of B-line and the level of SDC-1 ( RS=0.738, RS=0.626, P<0.05). Conclusion:The number of B-line and the level of SDC-1 have a good correlation with extravascular lung water. The combination of the two indicators might be used as a reliable index for evaluating the degree of extravascular lung water after bilateral lung transplantation.

12.
Article in Chinese | WPRIM | ID: wpr-828437

ABSTRACT

Guided by the theory of "component structure", we analyzed the structural characteristics of pharmacodynamical components in genuine Moutan Cortex. The compositions of organic small molecules were determined by high performance liquid chromatography(HPLC) for 20 batches of genuine Moutan Cortex and 12 batches of non-genuine Moutan Cortex. By means of similarity analysis, clustering analysis(CA), principal component analysis(PCA) and orthogonal partial least-squares discriminant analysis(OPLS-DA), the elements in structural characteristics of the pharmacodynamical components were extracted as follows: terpene glycosides components(oxidized paeoniflorin, paeoniflorin,galloyl paeoniflorin, benzoyloxy paeoniflorinand benzoyl paeoniflorin), tannin components(1,3,6-tri-O-galloside acyl glucose, pentagalloyl glucose), and phenolic acid components(methyl gallate, paeonol). The contents and quantity ratios of terpene glycoside component, tannin component and phenolic acid components in genuine Moutan Cortex were determined as 14.1, 12.5, 21.7 mg·g~(-1), 1.00∶0.89∶1.54. The contents and quantity ratios of the oxidized paeoniflorin, paeoniflorin and benzoylpaeoniflorin in the terpene glycoside components were characteristic and determined as 2.05, 7.05, 3.30 mg·g~(-1), 1.00∶3.44∶1.61. The unique structural characteristics of genuine Moutan Cortex provide scientific basis for the formulation of quality standards.


Subject(s)
Chromatography, High Pressure Liquid , Drugs, Chinese Herbal , Paeonia , Principal Component Analysis
13.
Article in Chinese | WPRIM | ID: wpr-828435

ABSTRACT

In this paper, we aim to control and evaluate the quality of Liuwei Dihuang Concentrated Pill by using the model of fingerprint technique and "component structure" theory. Agilent 5 TC-C_(18) column(4.6 mm×250 mm,5 μm) was used, with 0.1% formic acid solution-acetonitrile as mobile phase at a flow rate of 1.0 mL·min~(-1). The column temperature was 30 ℃, with detection wavelength of 242 nm and the sample volume of 10 μL. The characteristic fingerprint of Liuwei Dihuang Concentrated Pill was established by high performance liquid chromatography(HPLC) for its quality control. Seventeen common peaks were identified, and the similarity was 0.550-0.997 in 29 batches of samples, indicating that the quality difference among batches of Liuwei Dihuang Concentrated Pills was significant. The structural characteristics of the Moutan Cortex components in Liuwei Dihuang Concentrated Pills were characterized. On this basis, combined with the structural characteristics of genuine components of Moutan Cortex, the structural characteristics of components in Liuwei Dihuang Concentrated Pills were further analyzed. The results showed that there were significant differences in the contents and quantity ratios of 9 representative components(components) of Moutan Cortex in Liuwei Dihuang Concentrated Pills from different manufacturers, indicating internal quality differences among different batches of products. The fingerprint technique and the "component structure" theory established by the above research provide an analytical method and a research foundation for the quality evaluation of Liuwei Dihuang Concentrated Pills.


Subject(s)
Chromatography, High Pressure Liquid , Drugs, Chinese Herbal , Quality Control
14.
Chinese Critical Care Medicine ; (12): 1219-1223, 2019.
Article in Chinese | WPRIM | ID: wpr-796503

ABSTRACT

Objective@#To observe the effects of abnormal body temperature and the area under temperature curve on the prognosis of patients with septic shock.@*Methods@#A retrospective cohort study was conducted. Patients with septic shock admitted to intensive care unit (ICU) of Wuxi People's Hospital Affiliated to Nanjing Medical University from September 2013 to June 2019 were enrolled. Data were obtained from the hospital case database, including the gender, age, infection source, the length of ICU stay, sequential organ failure assessment (SOFA) score, 21-day prognosis; within the first 24 hours and throughout the period in ICU, the maximum temperature (24 h Tmax, Tmax), lowest temperature (24 h Tmin, Tmin), and the temperature range (24 h Tmax-min, Tmax-min) were aggregated. The area under temperature curve when body temperature was higher than T (A > T), or lower than T (A < T), and area section between T1 and T2 (AT1-T2) was calculated respectively. Patients were divided into survival group and death group according to 21-day prognosis. Binary Logistic regression was used to analyze the effect of the above temperature indices on the prognosis.@*Results@#635 septic shock patients were enrolled in the study. 476 patients were survived and 159 died within 21 days. Compared with the survival group, the age, SOFA score were higher in the death group, while the length of ICU stay was shorter. There was no significant difference in gender or infection source between two groups. After adjusting for gender, age, the length of ICU stay and SOFA score, binary Logistic regression analysis showed that the increase of Tmax, decrease of Tmin, and increase of Tmax-min were risk factors for 21-day mortality [Tmax: odds ratio (OR) = 2.959, 95% confidence interval (95%CI) was 1.620-5.398, P < 0.001; Tmin: OR = 0.329, 95%CI was 0.140-0.790, P = 0.012; Tmax-min: OR = 3.258, 95%CI was 1.840-5.471, P < 0.001], while 24 h Tmax, 24 h Tmin and 24 h Tmax-min were not related to prognosis. A < 36.0 ℃ (OR = 1.335, 95%CI was 1.102-1.745, P = 0.014), and A > 38.0 ℃ (OR = 1.041, 95%CI was 1.019-1.077, P = 0.001) showed positive correlation with 21-day mortality. When the T level was set at 38.0-40.0 ℃, for every 1 ℃×hour increase in A > T, the 21-day relative risk of death increased by 4.1%-83.2%.@*Conclusion@#When the body temperature of patients with septic shock is lower than 36.0 ℃, or higher than 38.0 ℃, the 21-day relative risk of death rose with the increase of the magnitude and duration of abnormal body temperature.

15.
Article in Chinese | WPRIM | ID: wpr-755878

ABSTRACT

Objective To study risk factors of newly developed nonalcoholic fatty liver disease (NAFLD) in patients after pancreaticoduodenectomy (PD) and the effect on prognosis.Methods Date of patients undergoing PD surgery at Pancreatic Department,Tianjin Cancer Hospital were collected from Jan 2016 to Dec 2016.Patients were divided into two groups according to occurrence of NAFL Devents.Results There were 22 patients in NAFLD group (group Ⅰ) and 47 patients in non NAFLD group(group Ⅱ).All patients were followed up till the end of 2017.Multi-factor analysis showed that extraintestinal drainage of pancreatic juice (OR =18.118,95% CI 2.968-114.455,P =0.002) and dissected lymph node number over 30 (OR =8.424,95% CI 2.272-31.232,P =0.001) were independent factors associated with NAFLD in patients after PD.Survival analysis showed no statistically significance for median progression-free survival (12.7 months in group Ⅰ vs.13.9 months in group Ⅱ,P =0.99) and median overall survival (mOS) (15.4 months in group Ⅰ vs.17.7 months in group Ⅱ,P =0.09).Conclusions Extraintestinal drainage of pancreatic juice and lymph node clearance over 30 are independent risk factors for new NAFLD in PD patients.The effect of new NAFLD on PFS and OS is not statistically significant.

16.
Chinese Journal of Rheumatology ; (12): 289-294, 2019.
Article in Chinese | WPRIM | ID: wpr-754895

ABSTRACT

Objective To observe the aortic calcification level in patients with rheumatoid arthritis (RA),and to analyze the relationships between aortic calcification and some RA disease related presentations.Methods RA patients (RA group) were all in-patients consecutively recruited from the Department of Rheumatology in one single tertiary hospital,and healthy subjects (control group) were individuals for check-up from the same hospital at the same time.Subjects with long-term smoking and drinking history,diabetes,hypertension,coronary heart disease,cancer,active or chronic infection,other autoimmune diseases and liver or kidney dysfunction were excluded in both groups.The aortic calcification scores (including ascending aorta,arcus aorta and aorta thoracica) were obtained automatically by 256-slice spiral CT scanner using the Heart Beat-CS program.Statistical package from Soci-science (SPSS) 17.0 software was used for data analysis.Student's t test,Mann-Whitney U test,Spearman test and x2 test were used.Results One hundred RA patients and 60 healthy subjects were selected,and there were no differences of age [(53±10) vs (51 ±8),t=1.031,P=0.304) and gender compositions [male 40(40%) vs 25(41%),x2=0.430,P=0.869) between the two groups.The aortic calcification score in the RA group was higher than that in the control group [19.4(3.3,190.0) vs 2.1 (1.9,18.0),U=1 579.5,P<0.01].In RA group,the calcification score was positively correlated with age (r=0.729,P<0.01),course of disease (r=0.227,P=0.023),C-reactive protein (CRP) (r=0.229,P=0.022),total cholesterol (TC) (r=0.220,P=0.028) and low density lipoprotein cholesterol (LDL-C) (r=0.224,P=0.014),but not related with treatment duration,number of tender joints and swollen joints,erythrocyte sedimentation rate,rheumatoid factor,anti-CCP antibody,DAS-28 (CRP),DAS-28 (ESR),triglyceride (TG) and high density lipoprotein cholesterol (HDL-C).The aortic calcification was also positively correlated with age in control group (r=0.465,P<0.01),but not related with TC,TG,HDL-C,LDL-C.Conclusion RA patients have more severe aortic calcification than the matched general population.Aortic calcification degree is related to disease course,CRP,TC and LDL-C,which indicates that chronic systemic inflammation is essential to aortic calcification in RA.

17.
Article in Chinese | WPRIM | ID: wpr-781673

ABSTRACT

OBJECTIVE@#To observe the effect of the small needle knife through the Zusanli(ST 36) on behavior and hippocampal expression of NLRP3 and IL-1β in myalgia comorbid depressed rats.@*METHODS@#The rat models of myalgia comorbid depression were prepared by intraperitoneal injection of acute reserpine. Twenty-four SD male rats were randomly divided into control group, model group, small needle knife group and amitriptyline group, 6 rats in each group. The open field behavior and mechanical pain threshold of each group were detected. The thermal pain threshold was detected by intelligent hot plate test. The expression of NLRP3 and IL-1β in hippocampus of rats was detected by Western blotting.@*RESULTS@#Compared with the model group, the mechanical pain threshold of the foot was significantly improved in the small needle knife group (0.05). The expressions of NLRP3 and IL-1β in the hippocampus of the model group were significantly increased(0.05).@*CONCLUSIONS@#Small needle knife can improve the pathological state of myalgia comorbid depression caused by reserpine in rats. The mechanism may be related to the inhibition of NLRP3 inflammasome and IL-1β expression in central hippocampus.


Subject(s)
Animals , Hippocampus , Inflammasomes , Interleukin-1beta , Male , Myalgia , NLR Family, Pyrin Domain-Containing 3 Protein , Rats , Rats, Sprague-Dawley
18.
Article in Chinese | WPRIM | ID: wpr-744539

ABSTRACT

Objective To investigate the role of microRNA-10b (miR-10b) in the proliferation and invasion potential of osteosarcoma cell lines MG-63 and the exact underlying mechanism.Methods The expression level of miR-10b in human osteosarcoma tissue samples and adjacent normal bone tissues were detected by relative quantitative real-time PCR (qRT-PCR).miR-10b mimic and siRNA against Twist (Twist siRNA) were transfected into human osteosarcoma cell lines MG-63 respectively using lipofactamine 2000, and RT-PCR was used to detect the mRNA expression levels of miR-10b and Twist, and Twist protein expression level was detected by Western blot.The effect of miR-10b mimic and Twist siRNA on proliferation of MG-63 were detected by MTT[3- (4, 5-dimethylthiazol-2-yl) -5- (3-carboxymethoxyphenyl) -2- (4-sulfophenyl) -2 H-tetrazolium].The in-vitro cell invasion ability was determined by Transwell invasion assays after up-regulating miR-10b or knocking down of Twist.Results The expression levels of miR-10b was higher in human osteosarcoma tissue samples compared with adjacent normal bone tissues, the differences were extremely statistical significance (P<0.01).miR-10b directly up regulated the mRNA and protein expression levels of Twist, the differences were significant (P<0.05).In addition, miR-10b had enhanced the cell invasion and the proliferation (P<0.05), whereas the proliferation and invasion ability of MG-63 which transfected by both miR-10b mimic and Twist siRNA were significantly reduced than that transfected by miR-10b mimic (P<0.05).Conclusion miR-10b in MG-63 promotes the proliferation and invasion potential of human osteosarcoma cell lines MG-63, at least partly through the upregulation of Twist gene.

19.
Chinese Critical Care Medicine ; (12): 1347-1351, 2019.
Article in Chinese | WPRIM | ID: wpr-791079

ABSTRACT

Objective To observe the effects of abnormal body temperature and the area under temperature curve on the prognosis of patients with septic shock. Methods A retrospective cohort study was conducted. Patients with septic shock admitted to intensive care unit (ICU) of Wuxi People's Hospital Affiliated to Nanjing Medical University from September 2013 to June 2019 were enrolled. Data were obtained from the hospital case database, including the gender, age, infection source, the length of ICU stay, sequential organ failure assessment (SOFA) score, 21-day prognosis; within the first 24 hours and throughout the period in ICU, the maximum temperature (24 h Tmax, Tmax), lowest temperature (24 h Tmin, Tmin), and the temperature range (24 h Tmax-min, Tmax-min) were aggregated. The area under temperature curve when body temperature was higher than T (A > T), or lower than T (A < T), and area section between T1 and T2 (AT1-T2) was calculated respectively. Patients were divided into survival group and death group according to 21-day prognosis. Binary Logistic regression was used to analyze the effect of the above temperature indices on the prognosis. Results 635 septic shock patients were enrolled in the study. 476 patients were survived and 159 died within 21 days. Compared with the survival group, the age, SOFA score were higher in the death group, while the length of ICU stay was shorter. There was no significant difference in gender or infection source between two groups. After adjusting for gender, age, the length of ICU stay and SOFA score, binary Logistic regression analysis showed that the increase of Tmax, decrease of Tmin, and increase of Tmax-min were risk factors for 21-day mortality [Tmax: odds ratio (OR) = 2.959, 95% confidence interval (95%CI) was 1.620-5.398, P < 0.001; Tmin: OR = 0.329, 95%CI was 0.140-0.790, P = 0.012; Tmax-min: OR = 3.258, 95%CI was 1.840-5.471, P < 0.001], while 24 h Tmax, 24 h Tmin and 24 h Tmax-min were not related to prognosis. A < 36.0 ℃ (OR = 1.335, 95%CI was 1.102-1.745, P = 0.014), and A > 38.0 ℃ (OR = 1.041, 95%CI was 1.019-1.077, P = 0.001) showed positive correlation with 21-day mortality. When the T level was set at 38.0-40.0 ℃, for every 1 ℃×hour increase in A > T, the 21-day relative risk of death increased by 4.1%-83.2%. Conclusion When the body temperature of patients with septic shock is lower than 36.0 ℃, or higher than 38.0 ℃, the 21-day relative risk of death rose with the increase of the magnitude and duration of abnormal body temperature.

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Chinese Critical Care Medicine ; (12): 1219-1223, 2019.
Article in Chinese | WPRIM | ID: wpr-791055

ABSTRACT

Objective To observe the effects of abnormal body temperature and the area under temperature curve on the prognosis of patients with septic shock. Methods A retrospective cohort study was conducted. Patients with septic shock admitted to intensive care unit (ICU) of Wuxi People's Hospital Affiliated to Nanjing Medical University from September 2013 to June 2019 were enrolled. Data were obtained from the hospital case database, including the gender, age, infection source, the length of ICU stay, sequential organ failure assessment (SOFA) score, 21-day prognosis; within the first 24 hours and throughout the period in ICU, the maximum temperature (24 h Tmax, Tmax), lowest temperature (24 h Tmin, Tmin), and the temperature range (24 h Tmax-min, Tmax-min) were aggregated. The area under temperature curve when body temperature was higher than T (A > T), or lower than T (A < T), and area section between T1 and T2 (AT1-T2) was calculated respectively. Patients were divided into survival group and death group according to 21-day prognosis. Binary Logistic regression was used to analyze the effect of the above temperature indices on the prognosis. Results 635 septic shock patients were enrolled in the study. 476 patients were survived and 159 died within 21 days. Compared with the survival group, the age, SOFA score were higher in the death group, while the length of ICU stay was shorter. There was no significant difference in gender or infection source between two groups. After adjusting for gender, age, the length of ICU stay and SOFA score, binary Logistic regression analysis showed that the increase of Tmax, decrease of Tmin, and increase of Tmax-min were risk factors for 21-day mortality [Tmax: odds ratio (OR) = 2.959, 95% confidence interval (95%CI) was 1.620-5.398, P < 0.001; Tmin: OR = 0.329, 95%CI was 0.140-0.790, P = 0.012; Tmax-min: OR = 3.258, 95%CI was 1.840-5.471, P < 0.001], while 24 h Tmax, 24 h Tmin and 24 h Tmax-min were not related to prognosis. A < 36.0 ℃ (OR = 1.335, 95%CI was 1.102-1.745, P = 0.014), and A > 38.0 ℃ (OR = 1.041, 95%CI was 1.019-1.077, P = 0.001) showed positive correlation with 21-day mortality. When the T level was set at 38.0-40.0 ℃, for every 1 ℃×hour increase in A > T, the 21-day relative risk of death increased by 4.1%-83.2%. Conclusion When the body temperature of patients with septic shock is lower than 36.0 ℃, or higher than 38.0 ℃, the 21-day relative risk of death rose with the increase of the magnitude and duration of abnormal body temperature.

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