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1.
Acta Pharmaceutica Sinica ; (12): 2785-2793, 2023.
Article in Chinese | WPRIM | ID: wpr-999008

ABSTRACT

The clinical tumor therapy was greatly challenged due to the complex characteristics of tumor microenvironment, however, which also provide arena for novel therapeutic strategies. In this study, poly(2-ethyl-2-oxazoline)-poly(lactic acid)-SS-poly(β-amino ester (PEOz-PLA-SS-PBAE) triblock copolymers with pH and GSH double response were synthesized, polymer micelles were prepared by thin film hydration method for loading of silybin to improve its antitumor activity. The critical micelle concentration was determined by pyrene fluorescence method as 1.8 μg·mL-1. The particle size was 155.30 ± 1.80 nm as determined by dynamic light scattering, with polydispersity index of 0.168 ± 0.004. The drug loading and entrapment efficiency of the micelles were determined by HPLC as (5.48 ± 0.04)% and (68.52 ± 0.48)%, respectively. The in vitro drug release profiles showed that the micelles have low pH sensitivity and high GSH responsiveness, and exhibited sustained release profiles. The good biocompatibility of the material was proved by measuring the hemolysis rate and cytotoxicity of the blank micelle. The cytotoxicity and apoptosis rate of tumor cells showed that the drug loaded PEOz-PLA-SS-PBAE micelles had significant inhibitory effect and apoptosis-inducing effect on MDA-MB-231 cells. The results of wounding healing assay and Transwell invasion test showed that the drug loaded PEOz-PLA-SS-PBAE micelles could significantly inhibit the metastasis of MDA-MB-231 cells. The PEOz-PLA-SS-PBAE drug-loaded micelles prepared in this study have good inhibitory effect on tumor growth and anti-tumor metastasis in vitro, which lays the foundation for the further application of silybin.

2.
Chinese journal of integrative medicine ; (12): 441-447, 2023.
Article in English | WPRIM | ID: wpr-982279

ABSTRACT

OBJECTIVE@#To derive the Chinese medicine (CM) syndrome classification and subgroup syndrome characteristics of ischemic stroke patients.@*METHODS@#By extracting the CM clinical electronic medical records (EMRs) of 7,170 hospitalized patients with ischemic stroke from 2016 to 2018 at Weifang Hospital of Traditional Chinese Medicine, Shandong Province, China, a patient similarity network (PSN) was constructed based on the symptomatic phenotype of the patients. Thereafter the efficient community detection method BGLL was used to identify subgroups of patients. Finally, subgroups with a large number of cases were selected to analyze the specific manifestations of clinical symptoms and CM syndromes in each subgroup.@*RESULTS@#Seven main subgroups of patients with specific symptom characteristics were identified, including M3, M2, M1, M5, M0, M29 and M4. M3 and M0 subgroups had prominent posterior circulatory symptoms, while M3 was associated with autonomic disorders, and M4 manifested as anxiety; M2 and M4 had motor and motor coordination disorders; M1 had sensory disorders; M5 had more obvious lung infections; M29 had a disorder of consciousness. The specificity of CM syndromes of each subgroup was as follows. M3, M2, M1, M0, M29 and M4 all had the same syndrome as wind phlegm pattern; M3 and M0 both showed hyperactivity of Gan (Liver) yang pattern; M2 and M29 had similar syndromes, which corresponded to intertwined phlegm and blood stasis pattern and phlegm-stasis obstructing meridians pattern, respectively. The manifestations of CM syndromes often appeared in a combination of 2 or more syndrome elements. The most common combination of these 7 subgroups was wind-phlegm. The 7 subgroups of CM syndrome elements were specifically manifested as pathogenic wind, pathogenic phlegm, and deficiency pathogens.@*CONCLUSIONS@#There were 7 main symptom similarity-based subgroups in ischemic stroke patients, and their specific characteristics were obvious. The main syndromes were wind phlegm pattern and hyperactivity of Gan yang pattern.


Subject(s)
Humans , Syndrome , Ischemic Stroke , Medicine, Chinese Traditional , Liver , Phenotype
3.
Journal of Southern Medical University ; (12): 1833-1838, 2023.
Article in Chinese | WPRIM | ID: wpr-1010603

ABSTRACT

OBJECTIVE@#To investigate iron accumulation level over the whole brain and explore the possible neuromechanism of medication-overuse headache (MOH) using quantitative susceptibility mapping (QSM).@*METHODS@#Thirty-seven MOH patients and 27 normal control subjects were enrolled in the study for examinations with both a multiecho gradient echo magnetic resonance (MR) sequence and brain high resolution structural imaging. A voxel-based analysis was performed to detect the brain regions with altered iron deposition, and the quantitative susceptibility mapping values of the positive brain regions were extracted. Correlation analysis was performed between the susceptibility values and the clinical variables of the patients.@*RESULTS@#In patients with MOH, increased susceptibility values were found mainly in the bilateral substantia nigra (SN) (MNI coordinate: 8, -18, -14; -6, -16, -14) as compared with the normal control subjects (P < 0.001), but these alterations in iron deposition were not significantly correlated with the clinical variables of the patients (P > 0.05). The susceptibility value in the left SN had an area under curve (AUC) of 0.734, and at the cut-off value of 0.077, its diagnostic sensitivity was 72.97% and its specificity was 70.37% for distinguishing MOH from normal controls; The susceptibility value in the right SN had an AUC of 0.699 with a diagnostic sensitivity of 72.97% and a specificity of 62.96% at the cut-off value of 0.084.@*CONCLUSION@#Increased iron deposition occurs in the bilateral SN of MOH patients, which provides a new insight into the mechanism of mesocorticolimbic dopamine system dysfunction in MOH. QSM technique can be used as a non-invasive means for quantitative analysis of brain iron deposition in migraine neuroimaging.


Subject(s)
Humans , Brain , Substantia Nigra , Magnetic Resonance Imaging/methods , Headache Disorders, Secondary , Headache , Iron , Brain Mapping/methods
4.
Chinese Journal of Radiology ; (12): 314-318, 2022.
Article in Chinese | WPRIM | ID: wpr-932514

ABSTRACT

Objective:To investigate the current status of interventional radiology discipline in the provincial-level and national cancer hospitals of China, and to provide supportive data for the future systematic construction of interventional radiology.Methods:A questionnaire was used to survey 32 provincial and national cancer hospitals of China. The survey included data such as discipline settings, medical treatment, medical education, and scientific research. Then descriptive statistical analysis was performed based on the data.Results:All 32 provincial and national cancer hospitals of China had interventional radiology services and were equipped with independent wards; the deployment rates of DSA, ultrasound, CT, and radiofrequency ablation equipments were: 100%(32/32), 81.3%(26/32), 40.6%(13/32), and 75.0%(24/32), respectively. Of all 32 hospitals, 27 (84.4%) had performed more than 1 000 interventional operations per year. The proportion of hospitals that had interventional subspecialties was 21.9% (7/32). As for the interventional radiology doctors in these hospitals, the ratio of doctors with a background of medical imaging specialty was 69.6%(256/368); the proportion of doctors with ages ≤ 45 years old was 72.0%(265/368); and the ratio of doctors with a master degree was 79.9%(294/368). Among the 32 hospitals, 22 (68.8%) had more than 500 000 yuan research funds in intervention radiology discipline, and 71.9%(23/32) had intervention radiology discipline postgraduate tutors.Conclusions:The overall development of interventional radiology discipline in provincial-level and national cancer hospitals is good. The discipline development pattern might set a good example for interventional radiology discipline construction in general hospitals.

5.
Chinese Journal of Orthopaedic Trauma ; (12): 558-564, 2022.
Article in Chinese | WPRIM | ID: wpr-956556

ABSTRACT

Objective:To investigate the efficacy of flexion-lateral curvature-supination reduction combined with primary anterior surgery for the treatment of lower cervical dislocation with unilateral facet inter-locking.Methods:A retrospective analysis was performed in the 32 patients who had been admitted to Department of Spine Surgery, Honghui Hospital for lower cervical dislocation with unilateral facet interlocking from November 2015 to October 2018. According to their treatments, they were divided into 2 groups. In the emergency group treated by flexion-lateral curvature-supination reduction combined with primary anterior surgery, there were 13 males and 3 females, aged from 24 to 63 years. In the traction group treated by cranial traction reduction combined with secondary anterior surgery, there were 12 males and 4 females, aged from 20 to 64 years. The operation time, intraoperative blood loss, hospital stay, bone graft fusion, American Spinal Injury Association (ASIA) grade and Japanese Orthopaedic Association (JOA) score were compared between the 2 groups.Results:There was no significant difference in the preoperative general data between the 2 groups, showing they were comparable ( P<0.05). All patients were followed up from 26 to 40 months. The hospital stay for the emergency group [(7.2±1.2) d] was significantly shorter than that for the traction group[(10.9±1.2) d] ( P<0.05). There was no significant difference in the operation time, blood loss, ASIA grade or JOA score between the 2 groups ( P>0.05). All patients achieved osseous fusion of intervertebral space. Conclusion:Compared with traditional methods, flexion-lateral curvature-supination reduction combined with primay anterior surgery shows no significant difference in the recovery of neurological function but leads to a shorter hospital stay.

6.
Chinese Journal of Trauma ; (12): 871-877, 2022.
Article in Chinese | WPRIM | ID: wpr-956516

ABSTRACT

Objective:To compare the efficacy of forceful reduction percutaneous pedicle screw and ordinary percutaneous pedicle screw in the treatment of osteoporotic thoracolumbar burst fracture with kyphosis.Methods:A retrospective cohort study was conducted to analyze the clinical data of 566 patients with osteoporotic thoracolumbar burst fracture with kyphosis admitted to Honghui Hospital, Xi ′an Jiaotong University from January 2015 to December 2018, including 191 males and 375 females, with age range of 48-79 years [(61.7±10.7)years]. Fracture segments were located at T 11 in 134 patients, T 12 in 154, L 1 in 160, and L 2 in 118. All fractures were type IIIA according to the acute symptomatic osteoporotic thoracolumbar fracture classification (ASOTLF). The thoracolumbar osteoporotic fracture severity score assessment system (TLOFSAS) score was ≥5 points. A total of 275 patients underwent forceful reduction and percutaneous pedicle screw internal fixation (forceful reduction screw group), and 291 patients underwent common percutaneous pedicle screw internal fixation (common screw group). The operation time, intraoperative blood loss, times of X-ray exposure on patients and measures documented before operation, at 3 days after operation and at 2 years after operation including anterior height ratio of the injured vertebrae, sagittal Cobb angle of the injured vertebrae, Japanese Orthopaedic Association (JOA) score and visual analog scale (VAS) were compared between the two groups. Moreover, degree of correction of Cobb angle at 3 days after operation, loss of correction of Cobb angle at 2 years after operation and postoperative complications were observed. Results:All patients were followed up for 25-34 months [(29.9±3.4)months]. The operation time, intraoperative blood loss and times of X-ray exposure on patients in forceful reduction screw group were (69.4±10.2)minutes, (60.3±13.1)ml and (26.8±3.7)times, less than (80.6±11.9)minutes, (80.7±15.4)ml and (30.4±3.4)times in common screw group (all P<0.01). There was no significant difference in anterior height ratio of the injured vertebrae between the two groups before operation and at 3 days after operation (all P>0.05). The anterior height ratio of the injured vertebrae in forceful reduction screw group was (95.5±2.3)% at 2 years after operation, significantly higher than (85.4±1.7)% in common screw group ( P<0.01). There was no significant difference in sagittal Cobb angle of the injured vertebrae between the two groups before operation ( P>0.05). The sagittal Cobb of the injured vertebrae in forceful reduction screw group at 3 days and 2 years after operation were (7.9±1.6)° and (8.8±1.5)°, lower than (10.6±1.1)° and (12.3±1.2)° in common screw group ( P<0.05 or 0.01). There were no significant difference in JOA score and VAS between the two groups before operation, at 3 days and at 2 years after operation (all P>0.05). The degree of correction of Cobb angle in forceful reduction screw group was (19.4±2.5)°, higher than (17.3±2.6)° in common screw group ( P<0.05). The loss of correction of Cobb angle in forceful reduction group was less than that in common screw group at 2 years after operation, but the difference was not statistically significant ( P>0.05). The incidence of postoperative complications in forceful reduction screw group was 12.4% (34/275), compared to 14.1% (41/291) in common screw group ( P>0.05). There were no complications such as iatrogenic nerve injury, fracture or loosening of internal fixator or leakage of bone cement in the spinal canal in both groups. Conclusions:For osteoporotic thoracolumbar burst fracture with kyphosis, forceful reduction and percutaneous pedicle screw internal fixation can significantly shorten operation time, reduce intraoperative blood loss and times of X-ray exposure on patients, restore height of the injured vertebrae, correct kyphosis and maintain reduction height of the injured vertebrae in contrast with conventional percutaneous pedicle screw internal fixation.

7.
Acta Academiae Medicinae Sinicae ; (6): 253-261, 2022.
Article in Chinese | WPRIM | ID: wpr-927873

ABSTRACT

Objective To explore the potential targets of triclosan in the treatment of nonalcoholic fatty liver disease(NAFLD) and to provide new clues for the future research on the application of triclosan. Methods The targets of triclosan and NAFLD were obtained via network pharmacology.The protein-protein interaction network was constructed with the common targets shared by triclosan and NAFLD.The affinity of triclosan to targets was verified through molecular docking.Gene ontology(GO) annotation and Kyoto Encyclopedia of Genes and Genomes(KEGG) pathway enrichment were carried out to analyze the key targets and the potential mechanism of action.NAFLD model was established by feeding male C57BL/6J mice with high-fat diet for 12 weeks.The mice were randomly assigned into a model group and a triclosan group [400 mg/(kg·d),gavage once a day for 8 weeks].The hematoxylin-eosin(HE) staining was used for observation of the pathological changes and oil red O staining for observation of fat deposition in mouse liver.Western blotting was employed to detect the protein level of peroxisome proliferator-activated receptor alpha(PPARα) in the liver tissue. Results Triclosan and NAFLD had 34 common targets,19 of which may be the potential targets for the treatment,including albumin(ALB),PPARα,mitogen-activated protein kinase 8(MAPK8),and fatty acid synthase.Molecular docking predicted that ALB,PPARα,and MAPK8 had good binding ability to triclosan.KEGG pathway enrichment showcased that the targets were mainly enriched in peroxisome proliferator-activated receptor signaling pathway,in which ALB and MAPK8 were not involved.Triclosan alleviated the balloon-like change and lipid droplet vacuole,decreased the lipid droplet area,and up-regulated the expression level of PPARα in mouse liver tissue. Conclusion PPARα is a key target of triclosan in the treatment of NAFLD,which may be involved in fatty acid oxidation through the peroxisome proliferator activated receptor signaling pathway.


Subject(s)
Animals , Male , Mice , Liver/pathology , Mice, Inbred C57BL , Molecular Docking Simulation , Network Pharmacology , Non-alcoholic Fatty Liver Disease/drug therapy , PPAR alpha/therapeutic use , Triclosan/therapeutic use
8.
Chinese Pediatric Emergency Medicine ; (12): 526-528, 2021.
Article in Chinese | WPRIM | ID: wpr-908334

ABSTRACT

There has been a large number of related literature reports on sleep disorders, but in pediatrics, especially for children aged 0-5 years old, sleep disorders have not received enough attention.In order to raise pediatricians′ awareness of sleep disorders in children aged 0-5 years old, the relevant studies during the past 10 years have been reviewed, and the clinical manifestations and treatments were summarized.The clinical manifestations of sleep disorders in infants aged 0-5 years old are not typical and the incidence is high.Sleep disorders have profound effects on the cognitive and behavioral development of children aged 0-5 years old.

9.
Protein & Cell ; (12): 261-278, 2021.
Article in English | WPRIM | ID: wpr-880901

ABSTRACT

TANK-binding kinase 1 (TBK1), a core kinase of antiviral pathways, activates the production of interferons (IFNs). It has been reported that deacetylation activates TBK1; however, the precise mechanism still remains to be uncovered. We show here that during the early stage of viral infection, the acetylation of TBK1 was increased, and the acetylation of TBK1 at Lys241 enhanced the recruitment of IRF3 to TBK1. HDAC3 directly deacetylated TBK1 at Lys241 and Lys692, which resulted in the activation of TBK1. Deacetylation at Lys241 and Lys692 was critical for the kinase activity and dimerization of TBK1 respectively. Using knockout cell lines and transgenic mice, we confirmed that a HDAC3 null mutant exhibited enhanced susceptibility to viral challenge via impaired production of type I IFNs. Furthermore, activated TBK1 phosphorylated HDAC3, which promoted the deacetylation activity of HDAC3 and formed a feedback loop. In this study, we illustrated the roles the acetylated and deacetylated forms of TBK1 play in antiviral innate responses and clarified the post-translational modulations involved in the interaction between TBK1 and HDAC3.

10.
Chinese Journal of Obstetrics and Gynecology ; (12): 528-536, 2021.
Article in Chinese | WPRIM | ID: wpr-910163

ABSTRACT

Objective:To analyze the clinical data of pregnant women complicated with cardiovascular disease in our center in the past 10 years, and to explore the trend of incidence, clinical diagnosis, and treatment of the disease.Methods:Clinical data of pregnant women with cardiovascular disease who delivered in Beijing Anzhen Hospital, Capital Medical University from 2010 to 2019 were collected and analyzed retrospectively. According to the time of the establishment of multidisciplinary team (MDT) in the center, the pregnant women were divided into the first 5-year group (2010-2014) and the second 5-year group (2015-2019). The general data, the composition of pregnancy complicated with cardiovascular disease and the changes of maternal and infant outcomes of the two groups were analyzed.Results:(1) During 2010-2019, there were 2 267 cases of pregnancy complicated with cardiovascular disease (836 cases in the first 5-year group and 1 431 cases in the second 5-year group), with a total incidence of 10.2% (2 267/22 334). Among all kinds of cardiovascular diseases, arrhythmia (41.0%, 930/2 267) and congenital heart disease (38.2%, 865/2 267) were more common. (2) There were 212 cases (25.4%, 212/836) and 426 cases (29.8%, 426/1 431) classified as Ⅲ or Ⅳ by modified WHO cardiovascular risk classification in the first 5-year group and the second 5-year group, respectively, and the difference was statistically significant ( χ2 =5.076, P=0.024). Among all kinds of cardiovascular diseases, there were 111 cases (13.3%, 111/836) and 159 cases (11.1%, 159/1 431) with valvular disease in the first 5-year group and the second 5-year group, respectively. The change of the component ratio was -16.5% (the difference was significant when the absolute value of change>10%), showing a significant decreasing trend. Aortic disease was found in 16 cases (1.9%, 16/836) and 56 cases (3.9%, 56/1 431), respectively, with a significant upward trend of 105.3%. (3) The mortality rate of pregnant women with cardiovascular disease was 1.0% (22/2 267), and 1.2% (10/836) and 0.8% (12/1 431) in the first 5-year grouop and the second 5-year group, respectively. There was no significant difference between the two groups ( χ2=0.702, P=0.402). ICU occupancy rates in the first 5-year group and the second 5-year group were 25.6% (214/836) and 20.7% (296/1 431), respectively, and the difference between the two groups was statistically significant ( χ2=7.306, P=0.007). There were no significant differences in cesarean section rate, mortality rate and incidence of adverse events between the two groups of pregnant women, and there were no significant differences in birth weight, preterm birth rate, mortality rate and asphyxia rate between the two groups of newborns (all P>0.05). Conclusions:Pregnancy complicated with cardiovascular disease is a common cause of adverse obstetric outcomes. There are various types of specific cardiovascular diseases, and the prognosis varies greatly. In recent years, the disease composition ratio has changed, and the severity and complexity of diseases have increased. Hierarchical management, MDT and individual management could improve the treatment level and reduce adverse outcomes.

11.
Chinese Journal of Obstetrics and Gynecology ; (12): 418-424, 2021.
Article in Chinese | WPRIM | ID: wpr-910155

ABSTRACT

Objective:To study the risk assessment, method selection and clinical management of pregnancy termination during the first and second trimester of pregnant women with cardiovascular disease.Methods:This study focused on pregnant women with cardiovascular diseases who were admitted to Beijing Anzhen Hospital during the first and second trimester of pregnancy from January 2016 to September 2019, to summarize their clinical characteristics, reasons and methods of pregnancy termination, management and outcomes.Results:Among 167 pregnant women, 119 cases (71.3%, 119/167) were in early pregnancy and 48 cases (28.7%, 48/167) were in middle pregnancy. The reasons for termination of pregnancy were cardiovascular disease (109 cases; 65.3%, 109/167), unwanted pregnancy (54 cases; 32.3%, 54/167) and other reasons (4 cases). Vacuum aspiration was performed in 98 cases and forceps curettage was performed in 19 cases, medical abortion was performed in 2 cases in early pregnancy. There was no change in cardiac function after pregnancy termination and all survived in early pregnancy. In the second trimester, 16 cases were induced by intraamniotic injection of ethacridine, 2 cases by water balloon, 1 case by oxytocin intravenous drip, and 29 cases by hysterotomy delivery. The ratio of patients with hysterotomy delivery with cardiac function grade Ⅲ-Ⅳ was significantly higher than that in the patients with vaginal labor induction in the second trimester [79% (23/29) vs 4/19; P<0.01]; the ratio of pregnancy risk grade Ⅳ-Ⅴ was also significantly higher [100% (29/29) vs 14/19; P=0.007]. The mean length of hospital stay of patients with hysterotomy delivery was significantly longer than that in the patients with vaginal labor induction [(7.1±3.4) vs (2.4±1.8) days; P<0.01]. Cardiac function was improved in 4 patients induced by ethacridine and rapid recovery without serious complications. Cardiac function decreased in 5 cases and 1 case died on the first day after hysterotomy delivery. Conclusions:Pregnancy risk assessment should be conducted as early as possible in patients with cardiovascular disease. If it is not suitable to continue the pregnancy, terminate pregnancy as early as possible to reduce the risk. Pregnancy termination methods and analgesic methods should be selected according to different gestational age and complications. The indications for hysterotomy delivery should not be relaxed at will, so as to minimize trauma and hemodynamic changes. After the termination of pregnancy, contraceptive measures should be implemented and the next treatment plan should be guided.

12.
Chinese Journal of Trauma ; (12): 618-627, 2021.
Article in Chinese | WPRIM | ID: wpr-909912

ABSTRACT

Objective:To analyze the incidence and epidemiological characteristics of traumatic spinal cord injury in China in 2018.Methods:Multi-stage stratified cluster sampling was used to randomly select hospitals capable of treating patients with spinal cord injury from 3 regions,9 provinces and 27 cities in China to retrospectively investigate eligible patients with traumatic spinal cord injury admitted in 2018. National and regional incidence rates were calculated. The data of cause of injury,injury level,severity of injury,segment and type of fracture,complications,death and other data were collected by medical record questionnaire,and analyzed according to geographical region,age and gender.Results:Medical records of 4,134 patients were included in this study,with a male-to-female ratio of 2.99∶1. The incidence of traumatic spinal cord injury in China in 2018 was 50.484 / 1 million (95% CI 50.122-50.846). The highest incidence in the Eastern region was 53.791 / 1 million (95% CI 53.217-54.365). In the whole country,the main causes of injury were high falls (29.58%),as well as in the Western region (40.68%),while the main causes of injury in the Eastern and Central regions were traffic injuries (31.22%,30.10%). The main injury level was cervical spinal cord in the whole country (64.49%),and the proportion of cervical spinal cord injury in the Central region was the highest (74.68%),and the proportion of lumbosacral spinal cord injury in the Western region was the highest (32.30%). The highest proportion of degree of injury was incomplete quadriplegia (55.20%),and the distribution pattern was the same in each region. A total of 65.87% of the patients were complicated with fracture or dislocation,77.95% in the Western region and only 54.77% in the Central region. In the whole country,the head was the main combined injury (37.87%),as well as in the Eastern and Central regions,while the proportion of chest combined injury in the Western region was the highest (38.57%). A total of 32.90% of the patients were complicated with respiratory complications. There were 23 patients (0.56%) died in hospital,of which 17(73.91%) died of respiratory dysfunction. Conclusions:The Eastern region of China has a high incidence of traumatic spinal cord injury. Other epidemiological features include high fall as the main cause of injury cervical spinal cord injury as the main injury level,incomplete quadriplegia as the main degree of injury,head as the main combined injury,and respiratory complications as the main complication.

13.
Chinese Journal of Radiology ; (12): 534-539, 2021.
Article in Chinese | WPRIM | ID: wpr-884443

ABSTRACT

Objective:To investigate the preventive efficacy of pirfenidone in esophageal stent-related restenosis and the related underlying mechanisms.Methods:Twenty-four rats underwent esophageal stent placement were included in this study. The rats were randomly assigned to three groups, with 8 rats in each group. The three groups were set to receive placebo, 150 mg/kg pirfenidone and 300 mg/kg pirfenidone daily by oral administration for 28 days, respectively. Twenty-eight days after stent placement, the stented esophagi were harvested for histological examinations. The number of epithelial layers, the thickness of submucosal fibrosis, the percentage of granulation tissue area, the degree of inflammatory cell infiltration, the degree of collagen deposition, and the α-SMA staining scores were evaluated. One-way ANOVA was performed for the statistical comparison of the number of epithelial layers, the degree of inflammatory cell infiltration, the degree of collagen deposition and the α-SMA staining scores among these three groups. The Kruskal-Wallis H test was used for comparison of the thickness of submucosal fibrosis and the percentage of granulation tissue area among the three groups. Results:Gross pathological findings showed that both pirfenidone groups had significantly less luminal fibrotic tissue formation and restenosis than placebo group. The percentage of granulation tissue areas in placebo group, 150 mg/kg and 300 mg/kg pirfenidone groups were 57.23%±25.68%, 21.80%±6.65% and 12.18%±6.37%, respectively. Both pirfenidone groups showed significantly less granulation tissue areas than placebo group ( P<0.01). The degree of inflammatory cell infiltration, the degree of collagen deposition and the α-SMA staining scores were 3.28±0.55, 3.38±0.63 and 2.75±0.38 in placebo group, 2.30±0.46, 2.36±0.58 and 2.00±0.42 in 150 mg/kg pirfenidone group, and 1.86±0.38, 1.91±0.41 and 1.57±0.28 in 300 mg/kg pirfenidone group, respectively. Both pirfenidone groups showed significantly less inflammatory cell infiltration, collagen deposition and α-SMA staining scores than placebo group ( P<0.01). Conclusion:Pirfenidone can suppress esophageal stent-related restenosis in rats by significantly inhibiting inflammation, myofibroblast activation and proliferation, and fibrotic tissue formation.

14.
Chinese Critical Care Medicine ; (12): 10-16, 2021.
Article in Chinese | WPRIM | ID: wpr-883828

ABSTRACT

Objective:To investigate the dynamic changes of intestinal flora in septic model mice.Methods:Forty-two male SPF C57BL/6 mice were selected, the sepsis model was reproduced by cecal ligation and puncture (CLP), and the experimental mice were divided into CLP 6-12 hours group ( n = 9) and 1, 2, 3 days group (all n = 10) and Sham group ( n = 3) according to the time points after modeling. Intestinal flora 16S rRNA sequencing was carried out within feces from the colonic lumen of mice, and the effective sequences were clustered to obtain an operational classification unit (OTU) for statistical analysis of biological information, including Alpha diversity analysis, species composition analysis, principal coordinate analysis (PCoA analysis) and species difference analysis (LEfSe analysis), the dynamic changes of intestinal flora after CLP modeling were analyzed. Results:Compared with Sham group, with the prolongation of modeling time, the Alpha diversity of intestinal flora decreased, showing a decrease in community richness index (3 days after CLP: Chao index 1 was 367.9±162.6 vs. 508.3±105.9, Ace index was 372.5±151.9 vs. 498.8±104.2), Shannon index decreased in community diversity index (3 days after CLP: 2.57±1.06 vs. 4.30±0.57, Simpson index increased (3 days after CLP: 0.26±0.19 vs. 0.04±0.03), suggesting that with the progress of CLP modeling time, the richness and diversity of intestinal flora decreased. According to species composition analysis, in OTU level, OTU 633 accounted for the highest proportion in CLP 1 day group (24.79%), OTU 1016 was dominant in CLP 2 days and 3 days groups, and the highest proportion was 61.75% in CLP 3 days group; in genus level, the abundance of norank_f_Muribaculaceae showed a slight increase and then a significant decrease with time, the abundance of Escherichia-Shigella increased significantly in CLP 2 days and 3 days groups, the abundance of Lactobacillus increased first and then decreased with time, the abundance of Bacteroides showed a trend of gradual increase with time. PCoA analysis suggested that CLP 6-12 hours group had a higher structural similarity with Sham group. The flora structure changed gradually with the time after modeling, and the change was significant after 3 days of CLP. LEfSe analysis indicated that the main components that caused the differences among the groups were g _norank_f_Muribaculaceae, g _Prevotellaceae_UCG-001, s_uncultured_Bacteroidales_bacterium_g_norank_f_Muribaculaceae, g_Parabacteroides, Escherichia-Shigella and OTU 1016. The differences in abundance of Escherichia-Shigella and OTU 1016 among the five groups ranked first in the genus level and OTU level respectively; the abundance of Escherichia-Shigella gradually increased from 0.01% (0%, 0.02%) in 6-12 hours after CLP to 44.79% (3.71%, 53.75%) in 3 days with time, and the abundance of OTU 1016 increased from 0.01% (0%, 0.02%) in 6-12 hours after CLP to 44.69% (3.66%, 53.64%) in 3 days with time. Conclusion:Intestinal dysbiosis occurred in all CLP model groups, the diversity of the flora gradually decreased with the progress of modeling time, Escherichia-Shigella gradually became the dominant bacteria.

15.
Chinese Journal of Radiology ; (12): 1056-1060, 2020.
Article in Chinese | WPRIM | ID: wpr-868375

ABSTRACT

Objective:To evaluate the diagnostic and therapeutic effect of percutaneous intranodal lymphography in patient with chylous leakage.Methods:The clinical data of percutaneous intranodal lymphography in patients with chylous leakage from January 2019 to November 2019 in Cancer Hospital Chinese Academy of Medical Sciences were retrospectively analyzed. A total of 8 patients (5 males and 3 females, median age 64 years old) were enrolled. Four patients were iatrogenic chylothorax, 3 patients iatrogenic chyloperitoneum, and 1 patient chyloperitoneum with unknown cause. All 8 patients were received inguinal lymph nodes puncture under ultrasound guidance, and contrast agent iodinated oil was injected for lymphography. The procedure complications were recorded and the follow-up data were collected for efficacy assessment.Results:The percutaneous intranodal lymphography was successfully performed in all patients (8/8). The median amount of iodinated oil used was 17.5 ml; the median operation time was 88 min, without complications found during the procedure. The results of percutaneous intranodal lymphography was positive in 5/8 cases, of which chylothorax and chyloperitoneum was 4/4 and 1/4, respectively. Four cases with chylothorax showed contrast extravasation at different level of thoracic duct, and 1 case after pancreatic cancer resection showed contrast extravasation at L3-4 level. The chylous leakage was treated in 5 patients (5/8) during and resolved after percutaneous intranodal lymphography, with 3 chylothorax and 2 chyloperitoneum cases, respectively.Conclusion:Percutaneous intranodal lymphography is a safe and effective lymphography method for the diagnosis of chylous leakage, and also has application values in the treatment of chylous leakage.

16.
Chinese Journal of Experimental Traditional Medical Formulae ; (24): 228-240, 2020.
Article in Chinese | WPRIM | ID: wpr-873304

ABSTRACT

Non-psychoactive medicinal cannabis is the cannabis that contain less than 0.3% of tetrahydrocannabinol (THC) and high content of cannabidiol (CBD) (more than 2.0% is reasonable), and mainly used for medicinal purpose. Cannabis have a long medical history, in this review, we retrospected the medicinal history of cannabis in China and the world. We summarized the cannabinoid especially CBD application of medicine in epilepsy, mental disease, tumor, analgesic and inflammatory, also the widely application in food, healthy products, cosmetics and other fields. Based on the problems like shortage of high CBD cultivars, weakness of fundamental research existed in non-psychoactive medicinal cannabis industry. We should fully utilize the genetic information of medicinal cannabis, establish the comprehensive identification system of non-psychoactive medicinal cannabis varieties, accelerate the breeding process of non-psychoactive medicinal cannabis cultivars, to ensure the safety and effectiveness of non-psychoactive medicinal cannabis. Strengthen the basic research on CBD and other cannabinoids to promote the application of non-psychoactive medicinal cannabis products and sustainable development of medical cannabis industry.

17.
China Occupational Medicine ; (6): 467-469, 2020.
Article in Chinese | WPRIM | ID: wpr-881926

ABSTRACT

OBJECTIVE: To analyze the clinical characteristics and diagnosis of silicosis with pulmonary tuberculosis and pulmonary aspergillosis. METHODS: The clinical data of a case of silicosis combined with pulmonary tuberculosis and aspergillosis was analyzed retrospectively. RESULTS: The clinical symptoms of this patient were chest tightness, suffocation, cough, expectoration and hemoptysis. The patient was diagnosed as tuberculosis in the local hospital in 2015. Two previous sputum smears of the patient were positive for mycobacterium tuberculosis. Both qualitative analysis of blood tubercle bacilli and sputum smear examination of acid-fast bacilli were negative. Chest computed tomography(CT) showed right lung pneumoconiosis with large shadow, left lower lobe of lung with uneven density and flake shadow, low density necrotic foci, a cavity with smooth wall. Sputum fungal culture: Aspergillus fumigatus(+++); bronchoscopic lung biopsy showed: Aspergillus pneumoniae. CONCLUSION: Low immunity, malnutrition and long-term use of antibiotics and hormones are the high risk factors of pulmonary aspergillosis. It is helpful to combine laboratory examination, patients′ clinical manifestations and chest CT characteristics, and to analyze the condition comprehensively for the early diagnosis of silicosis with pulmonary aspergillosis.

18.
Chinese Pediatric Emergency Medicine ; (12): 222-224, 2020.
Article in Chinese | WPRIM | ID: wpr-864893

ABSTRACT

Infant spasm is the highest incidence of infantile epilepsy syndrome, the incidence is 0.16/1 000-0.42/1 000, the proportion of male and female children is 6/4.Infantile spasms starts in early childhood, and is hidden, the symptoms of infantile spasms need to be distinguished from other diseases.In the presence of isolated or series of abnormal movements with or without developmental retardation orregression, timely EEG is necessary.And according to the EEG, doctors could give the corresponding drugs to the children as soon as possible to improve the prognosis.Through the correlative literature in recent 10 years, we summarized the causes, the clinical characteristics and the iconography of isnfantile spasms.

19.
International Journal of Pediatrics ; (6): 213-216, 2020.
Article in Chinese | WPRIM | ID: wpr-862956

ABSTRACT

Objective:To screen serum biomarkers of infantile spasm by iTRAQ technique.Methods:Fifteen cases of infants with infantile spasm and 15 cases of healthy infants were selected to find the plasma differential proteins by isobaric tag for relative and absolute quantitation(iTRAQ) technique and analysis of the biological information, then candidate proteins with significant differences were screened out.Results:Compared with the control group, 59 different proteins were obtained in the experimental group with a multiple of 1.2 times, which were involved in biological processes such as cytoskeleton organization, integrin activation and maintenance of protein location in cells.Five disease-related protein markers were selected and discussed.Conclusion:Differences in protein expression were found in plasma between infants with infantile spasm and normal controls.It may provide a new direction for the research of infant spasm.The research of cytoskeleton protein may become the breach of the infant spasm pathogenesis.New potential biomarkers, such as serine/threonine protein kinase and dopamine beta hydroxylase may provide a new direction for diagnosis and treatment of infant spasm.

20.
Acta Pharmaceutica Sinica ; (12): 1914-1922, 2020.
Article in Chinese | WPRIM | ID: wpr-825147

ABSTRACT

The non-specific administration of antitumor drugs is the main cause for the side effects of chemotherapy drugs on normal tissues. The application of nanotechnology in the delivery of anti-tumor drugs is one of the important ways to improve the therapeutic effect and to reduce the side effects. The current study aimed to synthesize pH responsive poly (methoxy-ethylene glycol)-poly(lactic acid)-poly-(β-amino ester) (PBAE) triblock copolymers to deliver docetaxel (DTX) and improve the anti-tumor activity of DTX. PBAE was synthesized by ring opening polymerization and Michael addition reaction, its structure and molecular weight was characterized by 1H NMR, the dissociation constant of base (pKb) were determined by acid-base titration method. The critical micelles concentration (CMC) of copolymers was measured by pyrene fluorescence spectroscopy. DTX loaded copolymer micelles were prepared by membrane hydration method. The size and its distribution as well as the stability of micelles were determined by laser light scattering analysis. The drug loading content (DL), entrapment efficiency (EE) and cumulative drug release from micelles were evaluated by high-performance liquid chromatography (HPLC). The sizes of DTX drug-loaded micelles were in the range of 10 to 100 nm with narrow distribution. DL of DTX in PBAE1 and PBAE2 micelles was (5.3 ± 0.10) % and (4.9 ± 0.05) %, respectively, with EE was (93.8 ± 1.70) % and (87.2 ± 4.10) %, respectively. The drug-loaded micelles showed pH sensitive drug release properties under weak acidic conditions, which showed potential drug release of DTX under mild acidic tumor environment. A mouse Lewis lung carcinoma model was established to evaluate the therapeutic efficacy of micellar DTX formulations. Significant inhibitory effect of the nanodrugs was observed with DTX dosages of 10 and 20 mg·kg-1, respectively. Moreover, the pH responsive PBAE1-DTX micellar drug exhibited stronger therapeutic efficacy on mice xenograft tumor, as compared with the non pH sensitive micellar drug (PELA-DTX) and free DTX. All animal experiments were performed according to the animal ethical standards and approved by the Animal Experiments and Ethical Committee of China Academy of Chinese Medical Sciences (No. 2017090110). The in vivo anti-tumor activity studies showed that the tumor volume growth rates of mice in different drug-administered groups were: PBAE1-DTX 20 mg·kg-1 < PBAE1-DTX 10 mg·kg-1 < PELA-DTX 10 mg·kg-1 < DTX 10 mg·kg-1 < normal saline, with the PBAE1-DTX group as the most potent group for tumor inhibition. The current pH sensitive DTX nano-micelles showed high potential in further studies to promote the application of nano DTX formulations for tumor treatment.

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