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1.
Chinese Journal of Preventive Medicine ; (12): 528-534, 2023.
Article in Chinese | WPRIM | ID: wpr-984768

ABSTRACT

Objective: To study the effect of diurnal temperature range on the number of elderly inpatients with ischemic stroke in Hunan Province. Method: Demographic and disease data, meteorological data, air quality data, population, economic and health resource data of elderly inpatients with ischemic stroke were collected in 122 districts/counties of Hunan Province from January to December 2019. The relationships between the diurnal temperature range and the number of elderly inpatients with ischemic stroke were analyzed by using the distributed lag non-linear model, including the cumulative lag effect of the diurnal temperature range in different seasons, extremely high diurnal temperature range and extremely low diurnal temperature range. Results: In 2019, 152 875 person-times were admitted to the hospital for ischemic stroke in the elderly in Hunan Province. There was a non-linear relationship between the diurnal temperature range and the number of elderly patients with ischemic stroke, with different lag periods. In spring and winter, with the decrease in diurnal temperature range, the risk of admission of elderly patients with ischemic stroke increased (Ptrend<0.001, Ptrend=0.002);in summer, with the increase in diurnal temperature range, the risk of admission of elderly patients with ischemic stroke increased (Ptrend=0.024);in autumn, the change in the diurnal temperature range would not cause a change in admission risk (Ptrend=0.089). Except that the lag effect of the extremely low diurnal temperature range in autumn was not obvious, the lag effect occurred in other seasons under extremely low and extremely high diurnal temperature ranges. Conclusion: The high diurnal temperature range in summer and the low diurnal temperature range in spring and winter will increase the risk of admission of elderly patients with ischemic stroke, and the risk of admission of elderly patients with ischemic stroke will lag under the extremely low and extremely high diurnal temperature ranges in the above three seasons.


Subject(s)
Humans , Aged , Temperature , Ischemic Stroke , Inpatients , Cold Temperature , Hot Temperature , Seasons , China/epidemiology
2.
Chinese Journal of Industrial Hygiene and Occupational Diseases ; (12): 262-270, 2023.
Article in Chinese | WPRIM | ID: wpr-986025

ABSTRACT

Objective: To systematically study the anti-fibrotic effect of N-acetyl-seryl-as partyl-lysyl-proline (Ac-SDKP) on pulmonary fibrosis. Methods: In May 2021, a computer search was performed on CNKI, Wanfang Knowledge Service Platform, VIP.com, China Biomedical Literature Database, Pubmed, OVID and other databases. The retrieval time was from January 2008 to May 2021. Randomized controlled experiments on the inhibition of pulmonary fibrosis by Ac-SDKP were screened. The control group was the pulmonary fibrosis model group and the experimental group was the Ac-SDKP treatment group. The quality of the literature was assessed using the syrcle risk of bias assessment tool, and data were extracted. Data analysis was Performed using revman 5.4 software. Results: 18 papers were included, with a total of 428 animal models. The results of meta analysis showed that the contents of α-smooth muscle actin (α-SMA), type I collagen, type Ⅲ collagen, transforming growth factor-β (TGF-β) and Nodule area in the exPerimental group were lower than those in the control grouP. [SMD=-2.44, 95%CI (-3.71--1.17), P=0.000][SMD=-5.36, 95%CI (-7.13--3.59), P=0.000] [SMD=-3.07, 95%CI (-4.13--2.02), P<0.000][SMD=-2.88, 95%CI (-3.63--2.14), P=0.000] [SMD=-1.80, 95%CI (-2.42--1.18), P=0.000], the content of hydroxy proline in the experimental group was higher than that in the control group [SMD=7.62, 95%CI (4.90-10.33), P=0.000], all indexes included in the literature were statistically significant. Conclusion: Ac-SDKP has obvious inhibitory effect on the process of pulmonary fibrosis, and may become a new clinical drug for the treatment of pulmonary fibrosis.


Subject(s)
Rats , Animals , Pulmonary Fibrosis , Rats, Wistar , Fibrosis , Disease Models, Animal , Proline
3.
Chinese Journal of Ultrasonography ; (12): 614-620, 2023.
Article in Chinese | WPRIM | ID: wpr-992864

ABSTRACT

Objective:To investigate the feasibility of deep learning radiomics model in the prediction of neoadjuvant chemotherapy (NAC) response in breast cancer based on ultrasound images at an early stage.Methods:Between January 2018 and June 2021, 218 patients with breast cancer who underwent NAC were enrolled in the retrospective study. All patients received a full cycle of NAC before surgery and underwent standard ultrasound examination before NAC and after the second cycles of NAC. Of all the patients, 166 patients came from institution 1 (the First Affiliated Hospital of Nanjing Medical University) were allocated into a primary cohort.Based on the architecture of Resnet 50 convolutional neural, a deep learning prediction model was built.Further validation was performed in an external testing cohort ( n=52) from institution 2 (General Hospital of Eastern Theater Command, PLA). The clinical model was constructed using independent clinical variables. To evaluate the predictive performance, areas under the curve (AUCs) of these models and two radiologists were compared by using the DeLong method. Results:The Resnet 50 model predicted the response of NAC with accuracy. The deep learning model, achieving an AUC of 0.923 (95% CI=0.884-0.962) in the primary cohort and an AUC of 0.896 (95% CI=0.807-0.980) in the test cohort, outperformed the clinical model and also performed better than two radiologists′ prediction (all P<0.05). Furthermore, the two radiologists achieved a better predictive efficacy (AUC 0.832 and 0.808 for radiologists 1 and 2, respectively) when assisted by the DL model (all P<0.01). Conclusions:The deep learning radiomics model is able to predict therapy response in the early-stage of NAC for breast cancer patients, which could guide clinicians and provide benefit for timely treatment strategy adjustment.

4.
Chinese Journal of Ocular Fundus Diseases ; (6): 468-477, 2022.
Article in Chinese | WPRIM | ID: wpr-958470

ABSTRACT

Objective:To observe and analyze the structural characteristics of the optic discs in high myopia (HM) combined with primary open-angle glaucoma (POAG) and the optic disc parameters with diagnostic efficacy.Methods:A cross-sectional study. From August 2020 to March 2021, a total of 114 eyes of 68 patients with POAG, HM and healthy volunteers who were diagnosed by Department of Ophthalmology, The First Affiliated Hospital of Kunming Medical University were included in the study. Among them, 21 POAG patients (39 eyes) were divided into H+P group (9 patients, 18 eyes) and non-H+P group (12 patients, 21 eyes) according to whether or not HM was combined; 26 HM patients (37 eyes) were selected as HM group; 21 healthy volunteers (38 eyes) were selected as normal control group. The subjects included 31 males (51 eyes) and 37 females (63 eyes), whose average age was 36.93±12.60 years old. Diopter, central corneal thickness (CCT) and axial length (AL) were measured. There was no significant difference in age ( F=8.333), sex composition ratio ( χ2=0.863), and CCT ( F=1.425) among the four groups ( P>0.05); while, there were significant differences in AL ( F=69.956), diopter ( F=37.711), visual field index (VFI) ( F=43.254) and mean defect (MD) ( F=49.793) among the four groups ( P<0.01). Enhanced depth imaging using optical coherence tomography was used to obtain the tilt parameters, the disc rim parameters, the lamina cribrosa parameters and the retinal nerve fiber layer (RNFL) thickness. The tilt parameters included optic disc horizontal diameter, optic disc vertical diameter, optic disc ellipse index (horizontal diameter/vertical diameter); the disc rim parameters included Bruch’s membrane opening-minimal rim width (BMO), optic cup area, optic disc area, disc rim area, cup-disc area ratio; the lamina cribrosa parameters included anterior laminar insertion depth (ALID), prelaminar neural tissue (PLNT), and lamina cribrosa thickness. The pairwise comparison between groups were performed by ANOVA test. Pearson correlation analysis was used to analyze the correlation between disc tilt parameters, disc rim parameters, lamina cribrosa parameters and visual field parameters, as well as between disc rim parameters and RNFL thickness. According to receiver operating characteristic (ROC) curve and area under the curve (AUC), the predictive value of those above related factors for HM combined with POAG was evaluated. Results:Tilt parameters: compared with the optic disc horizontal diameter of non-H+P group, those of normal control group, HM group and H+P group were significantly decreased ( P<0.05), the ellipse indices of HM group and H+P group were significantly lower than those of normal control group and non-H+P group ( P<0.05). The results of correlation analysis showed that the optic disc horizontal and vertical diameters were negatively correlated with MD ( r=-0.302,-0.235; P=0.002, 0.017), and negatively correlated with VFI ( r=-0.291,-0.246; P=0.003, 0.013). Disc rim parameters: the disc cup area and cup-disc area ratio of non-H+P group and H+P group were significantly larger than those of normal control group and HM group ( P<0.05). The disc rim area and the average BMO of HM group, non-H+P group and H+P group were significantly smaller than those of normal control group ( P<0.05). The results of correlation analysis showed that the cup-disc area ratio ( r=-0.584), the average BMO ( r=0.650) had the highest correlation with the average RNFL thickness ( P<0.001). The superior, inferior, nasal and temporal BMO were all positively correlated with the corresponding quadrant RNFL thicknesses ( r=0.431, 0.656, 0.362, 0.375; P<0.05); the optic disc rim area, the average BMO were positively correlated with MD ( r=0.449, 0.618) and VFI ( r=0.449, 0.605) ( P<0.05), among which the correlation of the average BMO was the highest; the optic cup area and cup-disc area ratio were negatively correlated with MD ( r=-0.346,-0.559) and VFI ( r=-0.312,-0.548) ( P<0.001), among which the correlation of the cup-disc area ratio was the highest. Lamina cribrosa parameters: ALID of non-H+P group and H+P group were significantly deeper than those of normal control group and HM group ( P<0.05). LC of non-H+P group and H+P group were significantly thinner than those of normal control group and HM group ( P<0.05). The results of correlation analysis showed that ALID was negatively correlated with MD and VFI ( r=-0.402, P<0.001), VFI ( r=-0.405, P=0.001); LC was positively correlated with MD and VFI ( r=0.403, P<0.001), VFI ( r=-0.401, P=0.015). Comparison of diagnostic efficiency between various optic disc parameters: the results of ROC analysis showed that the cup-disc area ratio had the highest diagnostic performance (AUC=0.847, P=0.007), the maximum Youden index was 0.563, the sensitivity and specificity were 0.833 and 0.730, respectively, and the best critical value was 0.340. Conclusions:Optic disc tilt is more pronounced in HM combined with POAG; BMO in each quadrant could objectively reflect the disc rim defect of HM combined with POAG; the thinning and the backward shift of the lamina cribrosa were consistent with the aggravation of the visual field defect. Among them, the cup-disc area ratio had better diagnostic performance.

5.
Chinese Journal of Industrial Hygiene and Occupational Diseases ; (12): 90-96, 2022.
Article in Chinese | WPRIM | ID: wpr-935752

ABSTRACT

Objective: To study the effect of anti-fibrotic tetrapeptide N-acetyl-seryl-aspartyl-lysyl-proline (Ac-SDKP) on phosphorylated heat shock protein 27 (P-HSP27) and zinc finger family transcriptional repressor 1 (SNAI1) expression to explore the anti-silicosis fibrosis effect of Ac-SDKP. Methods: In December 2014, the rat silicosis animal model was prepared by one-time bronchial infusion of silicon dioxide (SiO(2)) dust. 80 SPF healthy adult Wistar rats were selected, and the rats were divided into 8 groups according to the random number table method, 10 in each group. Model control group for 4 weeks (feeding for 4 weeks) , model control group for 8 weeks (feeding for 8 weeks) : bronchial perfusion with normal saline 1.0 ml per animal. Silicosis model group for 4 weeks (feeding for 4 weeks) and silicosis model group for 8 weeks (feeding for 8 weeks) : bronchial perfusion of 50 mg/ml SiO(2) suspension 1.0 ml per animal. Ac-SDKP administration group for 4 weeks (feeding for 4 weeks) , Ac-SDKP administration group for 8 weeks (feeding for 8 weeks) : Ac-SDKP 800 μg·kg(-1)·d(-1) was administered by intraperitoneal pump. Ac-SDKP preventive treatment group: 48 h after Ac-SDKP 800 μg·kg(-1)·d(-1) administration, bronchial perfusion of SiO(2) suspension 1.0 ml per animal, raised for 8 weeks. Ac-SDKP anti-fibrosis treatment group: after bronchial perfusion of 1.0 ml of SiO(2) suspension for 4 weeks, Ac-SDKP 800 μg·kg(-1)·d(-1) was administered for 4 weeks. Western blotting was used to detect the expression of P-HSP27, SNAI1, α-smooth muscle actin (α-SMA) , and collage typeⅠ and Ⅲ in each group. The expression of P-HSP27 and SNAI1 was detected by immunohistochemistry, and the co-localized expression of P-HSP27 and α-SMA was detected by laser confocal microscopy. Results: Compared with the model control group, the expressions of P-HSP27, SNAI1, α-SMA, and collage typeⅠ and Ⅲ in the silicosis fibrosis area of the rats in the silicosis model group were enhanced, and the differences were statistically significant (P<0.05) . After Ac-SDKP intervention, compared with silicosis model group for 8 weeks, the expressions of P-HSP27, SNAI1 α-SMA, and collage typeⅠ and Ⅲ in the Ac-SDKP preventive and anti-fibrosis treatment groups were significantly decreased, and the differences were statistically significant (P<0.05) . However, the expressions of P-HSP27 SNAI1, and collage typeⅠ and Ⅲ between the Ac-SDKP administration group and the model control group did not change significantly, and the differences were not statistically significant (P>0.05) . Laser confocal results showed that the positive cells expressing P-HSP27 and α-SMA in the lung tissue of the silicosis model group were more than those in the model control group. Compared with the silicosis model group, the Ac-SDKP prevention and anti-fibrosis treatment groups expressing the positive cells of P-HSP27 and α-SMA decreased. Compared with the model control group for 8 weeks, there were some double-positive cells expressing P-HSP27 and α-SMA in the nodules of the silicosis model group for 8 weeks. Conclusion: Ac-SDKP may play an anti-silicic fibrosis effect by regulating the P-HSP27/SNAI1 pathway.


Subject(s)
Animals , Rats , HSP27 Heat-Shock Proteins , Oligopeptides , Rats, Wistar , Silicon Dioxide , Silicosis/metabolism
6.
Journal of Southern Medical University ; (12): 101-107, 2022.
Article in Chinese | WPRIM | ID: wpr-936290

ABSTRACT

OBJECTIVE@#To investigate the mechanism of valproic acid (VPA) -induced impairment of the dendritic spines and synapses in the prefrontal cortex (PFC) for causing core symptoms of autism spectrum disorder (ASD) in mice.@*METHODS@#Female C57 mice were subjected to injections of saline or VPA on gestational days 10 and 12, and the male offspring mice in the two groups were used as the normal control group and ASD model group (n=10), respectively. Another 20 male mice with fetal exposure to VPA were randomized into two groups for stereotactic injection of DMSO or Wortmannin into the PFC (n=10). Open field test, juvenile play test and 3-chamber test were used to evaluate autistic behaviors of the mice. The density of dendrite spines in the PFC was observed with Golgi staining. Western blotting and immunofluorescence staining were used to detect the expressions of p-PI3K, PI3K, p-AKT, AKT, p-mTOR, mTOR and the synaptic proteins PSD95, p-Syn, and Syn in the PFC of the mice.@*RESULTS@#Compared with the normal control mice, the mice with fetal exposure to VPA exhibited obvious autism-like behaviors with significantly decreased density of total, mushroom and stubby dendritic spines (P < 0.05) and increased filopodia dendritic spines (P < 0.05) in the PFC. The VPA-exposed mice also showed significantly increased expressions of p-PI3K/PI3K, p-AKT/AKT, and p-mTOR/mTOR (P < 0.01) and lowered expressions of PSD95 and p-Syn/Syn in the PFC (P < 0.05 or 0.001). Wortmannin injection into the PFC obviously improved the ASD-like phenotype and dendritic spine development, down-regulated PI3K/Akt/mTOR signaling pathway and up-regulated the synaptic proteins in VPA-exposed mice.@*CONCLUSION@#In male mice with fetal exposure to VPA, excessive activation of PI3K/Akt/mTOR signaling pathway and decreased expressions of the synaptic proteins PSD95 and p-Syn cause dendritic spine damage and synaptic development disturbance in the PFC, which eventually leads to ASD-like phenotype.


Subject(s)
Animals , Female , Male , Mice , Autism Spectrum Disorder/chemically induced , Autistic Disorder/chemically induced , Dendritic Spines , Disease Models, Animal , Phosphatidylinositol 3-Kinases , Prefrontal Cortex , Prenatal Exposure Delayed Effects , Valproic Acid/adverse effects
7.
China Journal of Chinese Materia Medica ; (24): 4117-4123, 2021.
Article in Chinese | WPRIM | ID: wpr-888070

ABSTRACT

This study aims to explore the relationship of DNA methylation with the contents of the index components as well as the growth and development of Pogostemon cablin. The demethylation reagent 5-azacytidine(5-azaC) was used to treat the tissue culture seedlings of patchouliol-type P. cablin. High performance liquid chromatography was employed to evaluate the changes of DNA methy-lation in P. cablin, and GC-MS to detect the contents of index components in P.cablin. The agronomic characters of P.cablin were measured using the common methods. The results showcased that DNA methylation of P.cablin was significantly reduced by 5-azaC in a concentration-dependent manner. Thirty days after treatment with 5-azaC at different concentrations, the content of patchouli alcohol changed slightly; compared with that in the control group, the content of pogostone in 50 μmol·L~(-1) and 100 μmol·L~(-1) 5-azaC groups was significantly up-regulated. The 100 μmol·L~(-1) 5-azaC group had the largest differences in contents of pogostone and patchouli alcohol compared with the control group, followed by the 50 μmol·L~(-1) 5-azaC group. Ninety days after disinhibition, the content of pogostone in the treatment group was significantly increased and the content of patchouli alcohol was significantly decreased. In addition, 5-azaC significantly inhibited the growth and development of P.cablin in a dose-dependent manner. These results indicate that DNA methylation regulates the biosynthesis of the index components in patchouliol-type P.cablin and proper demethylation can directly promote the synthesis of pogostone and indirectly affect the accumulation of patchouli alcohol.


Subject(s)
Azacitidine , DNA Methylation , Gas Chromatography-Mass Spectrometry , Oils, Volatile , Pogostemon/genetics
8.
Chinese Journal of Ultrasonography ; (12): 519-525, 2021.
Article in Chinese | WPRIM | ID: wpr-910088

ABSTRACT

Objective:To investigate the effectiveness of radiomics model based on preoperative ultrasound in predicting disease-free survival (DFS) in patients with triple negative breast cancer (TNBC) from multicenter data.Methods:A total of 418 patients with TNBC between July 2012 and December 2016 were consecutively recruited for this study from three different institutions including the First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital of Chinese Medicine and General Hospital of Eastern Theater Command. In the training cohort ( n=271) from institution 1(the First Affiliated Hospital of Nanjing Medical University), least absolute shrinkage and selection operator (LASSO) logistic regression algorithm was employed to select recurrence-related radiomics features and build a signature derived from the grayscale US images. The relationship between the radiomics score (Rad-score) and DFS was evaluated. Univariate and multivariate cox regression were utilized to identify the significant radiomics features and clinical-pathologic variables, which were integrated into a radiomics nomogram. An independent external cohort ( n=147) from the other two institutions was validated for evaluating the calibration and discrimination of the predictive nomogram. Results:Higher Rad-score was an independent risk predictor of worse DFS in two cohorts (both P<0.05). The radiomics model, comprising axillary lymph node status, Ki-67 index and radiomics signature, showed better prognostic performance ( P<0.01) than those of the clinical-pathologic model or tumor node metastasis (TNM) staging system with the concordance index (C-index) of 0.75 (95% CI=0.72-0.78) and 0.73(95% CI=0.71-0.75) in the training and validation cohorts respectively. Furthermore, the calibration curves achieved satisfactory agreement and the decision curves further confirmed the clinical utility of the radiomics nomogram. Conclusions:The US-based radiomics signature is a powerful predictor for the assessment of DFS in patients with TNBC. Moreover, the proposed radiomics model integrating the optimal radiomics signature and clinical-pathologic data could improve personalized DFS estimation.

9.
Journal of Experimental Hematology ; (6): 1181-1186, 2021.
Article in Chinese | WPRIM | ID: wpr-888536

ABSTRACT

OBJECTIVE@#To investigate the prognostic value of metabolic parameters of @*METHODS@#The clinical data of 58 patients with DLBCL who were examined by @*RESULTS@#The SUV@*CONCLUSION@#MTV and TLG are independent risk factors for OS and PFS in patients with DLBCL, which may be valuable for prognosis of patients with DLBCL.


Subject(s)
Humans , Fluorodeoxyglucose F18 , Lymphoma, Large B-Cell, Diffuse , Positron Emission Tomography Computed Tomography , Positron-Emission Tomography , Prognosis , Retrospective Studies
10.
Chinese Journal of School Health ; (12): 914-916, 2021.
Article in Chinese | WPRIM | ID: wpr-881435

ABSTRACT

Objective@#To analyze of epidemiological and etiological characteristics of 14 norovirus clusters or outbreak in Nan an District, for comprehensive prevention and control measures for norovirus infections in the region.@*Methods@#Data were collected from the emergency public health event management information system of China Disease Prevention and Control Information System, and were analyzed by using descriptive epidemiological method.@*Results@#In 2018, 14 cases of norovirus infection clusters and outbreaks were reported in Nan an District, accounting for 63.64% of the total number of incidents in the region. A total of 268 cases were reported, with an average incidence of 2.19%; the outbreak occurred mainly in November(n=6); kindergartens reported the most outbreak(n=7), followed by primary schools(n=5); the median duration of the outbreak was 2.80 days; and 14 outbreaks were caused by the GII-type genome of norovirus, with the main transmission routes being human-to-hnuman transmission.@*Conclusion@#The prevalence of norovirus outbreaks tends to be higher in schools, it is necessary to strengthen the monitoring of vomiting and diarrhea symptoms in collective units such as schools, and efforts should be promoted for implementation of all levels of prevention and control measures in school.

11.
China Journal of Chinese Materia Medica ; (24): 1813-1821, 2021.
Article in Chinese | WPRIM | ID: wpr-879096

ABSTRACT

Prunella vulgaris(PV) is an edible and traditional medicinal herb which has a wide range application in fighting inflammation and oxidative stress, and protecting liver. Now it has been used to treat various types of liver diseases and has significant clinical efficacy. This study aims to investigate the effects of PV on ethanol-induced oxidative stress injury in rats and its metabolic mechanism. The rats were divided into control group, model group, PV group, and VC group. The liver protection of PV was identified by measuring pharmacological indexes such as antioxidant and anti-inflammatory activity. The metabolic mechanism of long-term ethanol exposure and the metabolic regulation mechanism of PV treatment were studied by LS-MS metabonomics. The pharmacological investigation indicated that ethanol could significantly decrease the contents of SOD, GSH-Px, CAT and other antioxidant enzymes in liver and increase the content of MDA. At the same time, PV could significantly reduce the contents of inflammatory factors(TNF-α, IL-6 and IL-1β) and liver function markers(ALT, AST, ALP) in serum. What's more, long-term ethanol exposure could significantly cause liver injury, while PV could protect liver. Metabolomics based on multiple statistical analyses showed that long-term ethanol exposure could cause significant metabolic disorder, and fatty acids, phospholipids, carnitines and sterols were the main biomarkers. Meanwhile, pathway analysis and enrichment analysis showed that the β oxidation of branched fatty acids was the main influencing pathway. Also, PV could improve metabolic disorder of liver injury induced by ethanol, and amino acids, fatty acids, and phospholi-pids were the main biomarkers in PV treatment. Metabolic pathway analysis showed that PV mainly regulated metabolic disorder of ethanol-induced liver injury through phenylalanine, tyrosine and tryptophan biosynthetic pathways. This study could provide a new perspective on the hepatoprotective effect of natural medicines, such as PV.


Subject(s)
Animals , Rats , Antioxidants/metabolism , Ethanol/toxicity , Liver/metabolism , Metabolomics , Oxidative Stress , Prunella
12.
Journal of Xi'an Jiaotong University(Medical Sciences) ; (6): 69-73, 2020.
Article in Chinese | WPRIM | ID: wpr-843922

ABSTRACT

Objective: To explore whether N-acetyl-seryl-aspartyl-lysyl-proline (Ac-SDKP) inhibits the formation of silica nodules and the deposition of collagen by inhibiting the expressions of inflammatory factor myeloid-related protein14 (MRP-14) and collagen in silicosis rats. Methods:The silicosis model of rats was established by one-off bronchial instillation of silicon (SiO2) dust. Sixty healthy adult rats of SPF grade were randomly divided into six groups: control 4-week group, control 8-week group, silicosis model 4-week group, silicosis model 8-week group, Ac-SDKP prevention treatment group, and Ac-SDKP anti-fibrosis treatment group, with ten rats in each group. Immunohistochemical method was used to detect the expression of MRP-14 protein in silicosis model tissues. Western blot method was used to detect the expressions of MRP-14 and collagen protein in silicosis model tissues. Results: Compared with those in the corresponding control group, the expressions of MRP-14 and collagen in silicosis fibrosis areas were significantly increased in the dust-exposed group (P<0.05). Compared with those in the silicosis model 8-week group, the expressions of MRP-14 and collagen were significantly decreased after Ac-SDKP intervention (P<0.05). Conclusion: Ac-SDKP can inhibit silicosis in rats by inhibiting the regulation of MRP-14 expression.

13.
Chinese Journal of Medical Genetics ; (6): 124-127, 2019.
Article in Chinese | WPRIM | ID: wpr-775798

ABSTRACT

OBJECTIVE@#To construct eukaryotic expression vectors for human platelet CD36 gene 220 C>T and 429+4insg variants and analyze their expressions in HEK293T cells.@*METHODS@#RNA was isolated from human platelets and reversely transcribed into cDNA. Sequences of 220C>T and 429+4insg variants were derived by PCR amplification. The target sequence was ligated into a pcDNA3.1/V5-His-TOPO vector by TA cloning, which was transformed into TOP10 E. coli. Positive plasmids were screened by blue-white selection. After sequencing, plasmid DNA carrying 220C>T or 429+4insg variant was used to transfect HEK293T cells with the help of effectene. Expression of CD36 protein was then analyzed by flow cytometry and Western blotting.@*RESULTS@#An eukaryotic expression vector pcDNA3.1/V5-His-CD36 (220C>T/429+4insg) was constructed by TA cloning. After transfected into HEK293T cells, the 220C>T and 429+4insg variants resulted in CD36 deficiency in HEK cells, which was confirmed by flow cytometry and Western blotting.@*CONCLUSION@#The 220C>T and 429+4insg variants can cause CD36 deficiency in human platelets. This system may be used for assessing the effect of 220C>T, 429+4insg, and other variants on the expression of CD36.


Subject(s)
Humans , Blood Platelets , CD36 Antigens , Cloning, Molecular , Escherichia coli , Eukaryota , Genetic Vectors , HEK293 Cells , Plasmids , Transfection
14.
Organ Transplantation ; (6): 61-2019.
Article in Chinese | WPRIM | ID: wpr-780411

ABSTRACT

Objective To investigate the attitude and willingness of nurses from intensive care unit (ICU) in Chongqing towards organ donation and analyze the influencing factors. Methods In this study, 4 Grade 3A hospitals with organ transplantation qualifications in Chongqing were selected by cluster sampling, and 321 nurses in ICU from these 4 hospitals were chosen by convenient sampling method to complete the questionnaire survey. The scores of ICU nurses' attitude and willingness towards organ donation were calculated. Spearman's correlation analysis was adopted to analyze the correlation between the attitude and willingness to donate organs. Multiple linear regression analysis was performed to identify the influencing factors of attitude and willingness towards organ donation. Results The average score of ICU nurses' attitude toward organ donation was (3.5±0.9) and the median score of willingness to donate organs was 2 (2-3). The attitude of ICU nurses towards organ donation was positively correlated with their willingness (P < 0.001). The experience of voluntary blood donation, the attitude of family members towards organ donation and the experience of organ donation persuasion were the influencing factors of ICU nurses' willingness to donate organs (all P < 0.05), among which the experience of voluntary blood donation and the attitude of family members towards organ donation were also the influencing factors of ICU nurses' attitude towards organ donation (both P < 0.05). Conclusions ICU nurses hold neutral attitude towards organ donation and show low willingness to donate organs. The experience of voluntary blood donation, the attitude of family members towards organ donation and the experience of organ donation persuasion are the main influencing factors.

15.
Singapore medical journal ; : 512-521, 2019.
Article in English | WPRIM | ID: wpr-776994

ABSTRACT

INTRODUCTION@#The objectives of this study were to examine the effects of ethnicity, gender and a proton pump inhibitor (PPI), omeprazole, on the human gut microbiome. PPIs are commonly used for the treatment of acid-related disorders. We hypothesised that PPI therapy might perturb microbial communities and alter the gut microbiome.@*METHODS@#Healthy subjects of Chinese (n = 12), Malay (n = 12) and Indian (n = 10) ancestry, aged 21-37 years, were enrolled. They provided a baseline stool sample (Day 1) and were then given a course of omeprazole at therapeutic dose (20 mg daily) for seven days. Stool samples were collected again on Day 7 and 14 (one week after stopping omeprazole). Microbial DNA was extracted from the stool samples, followed by polymerase chain reaction, library construction, 16S rRNA sequencing using Illumina MiSeq, and statistical and bioinformatics analyses.@*RESULTS@#The findings showed an increase in species richness (p = 0.018) after omeprazole consumption on Day 7, which reverted to baseline on Day 14. There were significant increases in the relative abundance of Streptococcus vestibularis (p = 0.0001) and Veillonella dispar (p = 0.0001) on Day 7, which diminished on Day 14. Faecalibacterium prausnitzii, Sutterella stercoricanis and Bacteroides denticanum were characteristic of Chinese, Malays and Indians, respectively. Lactobacillaceae and Bacteroides xylanisolvens were the signature taxa of male and female subjects, respectively.@*CONCLUSION@#The study demonstrated alterations in the gut microbiome following omeprazole treatment. This may explain the underlying pathology of increased risk of Clostridium difficile infections associated with omeprazole therapy.

16.
Journal of Guangzhou University of Traditional Chinese Medicine ; (6): 74-79, 2018.
Article in Chinese | WPRIM | ID: wpr-665269

ABSTRACT

Objective To study the microRNA-related mechanism of acupuncture in promoting postoperative gastrointestinal motility of patients with colorectal cancer. Methods Thirty cases of postoperative gastrointestinal motility disorder patients with colorectal cancer were randomly divided into acupuncture group and control group, 15 cases in each group. The control group received conventional symptomatic and supportive therapy, and acupuncture group received acupuncture at bilateral foot triple points of Zusanli,Sanyinjiao,Taichong daily on postoperative day 1-5 on the basis of conventional therapy for the control group. Time for the first anal exsufflation and time for the first defecation after operation were observed for the evaluation of clinical efficacy. Meanwhile, miR-19a expression level in serum and miR-222 expression level in the cancer tissue were detected by polymerase chain reaction (PCR). Results (1)The total effective rate of acupuncture group was 80.0%,and that of the control group was 46.7%,the difference being significant (P<0.05). (2)Time for the first anal exsufflation and time for the first defecation after operation in acupuncture group were shorter than those in the control group, the difference being significant (P < 0.05). (3) Serum miR-19a expression level in acupuncture group was decreased obviously on postoperative day 5 compared to day 1 (P < 0.05), and the decrease in acupuncture group was superior to that in the control group (P<0.05). (4)The expression of miR-222 in the cancer tissue was positively relevant to time for postoperative first anal exsufflation in both groups (P<0.05),and the expression level in ineffective patients was higher than that in effective patients (P < 0.05). Conclusion Acupuncture can regulate serum miR-19a expression level and promote the recovery in postoperative gastrointestinal motility of patients with colorectal cancer. The recovery of postoperative gastrointestinal motility in patients with colorectal cancer and the acupuncture effect are affected by miR-222 expression in the cancer tissue.

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Acta Pharmaceutica Sinica B ; (6): 18-26, 2017.
Article in English | WPRIM | ID: wpr-256783

ABSTRACT

Apoptosis, especially the intrinsic mitochondrial cell death pathway, is regulated by the BCL-2 family of proteins. Defects in apoptotic machinery are one of the main mechanisms that cells employ to evade cell death and become cancerous. Targeting the apoptotic defects, either by direct inhibition of BCL-2 family proteins or through modulation of regulatory pathways, can restore cell sensitivity to cell death. This review will focus on the aspects of BCL-2 family proteins, their interactions with kinase pathways, and how novel targeted agents can help overcome the apoptotic blockades. Furthermore, functional assays, such as BH3 profiling, may help in predicting responses to chemotherapies and aid in the selection of combination therapies by determining the mitochondrial threshold for initiating cell death.

18.
Chinese Mental Health Journal ; (12): 19-24, 2017.
Article in Chinese | WPRIM | ID: wpr-514346

ABSTRACT

Objective:To investigate the relation of counselors'and therapists'interpersonal personality on the ethical behavior of dual relationship.Methods:Totally 177 practitioners (21-65 years old) were investigated with 4 interpersonal personality subscales of the Chinese Personality Inventory (CPAI) and the Questionnaire of the attitude of counselors to the ethical behavior of dual relationship.Results:There were no differences of 4 dimension of interpersonal personality on the 6 items of professional relationship between higher and lower groups (Ps > 0.05),but on the other 5 types of dual relations respectively,there were 6 (9%),10 (15%),12 (18%) and 21 items'(32%) score showing statistically difference (Ps < 0.05).Furthermore,more items had score difference on social relationship.Conclusion:It suggests that the counselors'and therapists'interpersonal personality may be related to the ethical behavior in dual relationship.

19.
Chinese Journal of Rehabilitation Theory and Practice ; (12): 833-838, 2017.
Article in Chinese | WPRIM | ID: wpr-616474

ABSTRACT

Objective To investigate the prevalence and risk factors of mild cognitive impairment (MCI) among the old people in Chongqing, China. Methods From October to November, 2015, 1850 persons more than 60-year-old in Chongqing were cluster sampled. They were investigated with self-made general situation questionnaire, Mini-Mental State Examination (MMSE), Instrumental Activity of Daily Living Scale (IADL) and Geriatric Depression Scale (GDS) through face-to-face interview. Enumeration data were tested withχ2 test and multiple Logistic regression. Results MCI prevalence was 11.73%in the old people in Chongqing, and various with the residential re-gions, ages, marital status, literacy, career, smoking, drinking, seafood-eating, egg-eating, exercising, intensive labor, low intensity of labor, housework, outdoor activities, Mahjong/chess/cards playing, TV-watching/radio-listening/newspaper-reading, social activities, obesity, hy-pertension, diabetes, stroke, hyperglycemia, cerebrovascular insufficiency and depression (χ2>4.092, P<0.05). According to multiple Logis-tic regression, living in rural areas, aging, celibacy, obesity, hypertension and depression were the risk factors of MCI;while middle school and above years of schooling, mental workers, smoking cessation, frequent seafood-eating and egg-eating, exercising, daily intensive labor and low intensity of labor, daily and sometimes housework, daily and weekly outdoor activities at least once, daily Mahjong/chess/cards playing and daily TV-watching/radio-listening/newspaper-reading were the preventing factors. Conclusion The morbidity of MCI is high in the old people in Chongqing. It is necessary to take effective intervention in view of the related factors of MCI as early as possible, to delay or prevent the development of MCI to dementia.

20.
Chinese Journal of Epidemiology ; (12): 977-982, 2017.
Article in Chinese | WPRIM | ID: wpr-737759

ABSTRACT

In the past decade,based on the “common disease-common variant” hypothesis,genomewide association studies (GWAS) have been extensively used to dissect the genetic components of complex diseases and quantitative traits.However,the identified disease-associated common variants by GWASs can only explain small part of the corresponding disease heritability.“Common disease-rare variant” hypothesis has been proposed to explore the missed heritability.With the development of the next generation sequencing technology,various association studies of less common variants are ongoing.This paper provides an overview of the study designs and statistical tests of these variants.

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