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1.
Article in Chinese | WPRIM | ID: wpr-922155

ABSTRACT

The concept of spread through air spaces (STAS) was first proposed in the World Health Organization (WHO) Classification of Tumors of the Lung, Pleura, Thymus and Heart (version 2015). STAS is defined as the micropapillary clusters, solid nests or single cells of tumor that exist in the air spaces of the surrounding lung parenchyma beyond the edge of the main tumor. Meanwhile, apart from the traditional invasion modes of lung adenocarcinoma (interstitial, visceral pleura and lym-phovascular invasion), STAS has been identified as the fourth invasion mode of lung adenocarcinoma. In recent years, the research on STAS has been a hot spot in the field of lung adenocarcinoma. The existence of STAS is related to lung cancer histopathology, gene mutation and other factors, and many studies have also confirmed that it can be used as an independent factor for tumor recurrence and prognosis. However, according to some studies, human factors can cause morphological artifacts of STAS, which still needs to be distinguished in clinical work. This paper reviews the research progress of STAS classification, related pathological features, genetic status changes, and human factors that may cause STAS artifacts.
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Subject(s)
Adenocarcinoma of Lung/pathology , Humans , Lung Neoplasms/pathology , Neoplasm Invasiveness , Neoplasm Recurrence, Local , Neoplasm Staging , Prognosis , Retrospective Studies
2.
Article in Chinese | WPRIM | ID: wpr-906185

ABSTRACT

Objective:To investigate the effect of the production process of Zushima Guanjie Zhitong Gao from solvent method to hot-pressed method on <italic>in vitro</italic> kinetic behavior of this preparation. Method:Solvent and hot-pressed methods were used to prepare three batches of samples above pilot scale, and <italic>in vitro</italic> release and percutaneous penetration of the index components (7,8-dihydroxycoumarin and methyl salicylate) in Zushima Guanjie Zhitong Gao were investigated by modified Franz diffusing cells. Result:The contents of 7,8-dihydroxycoumarin and methyl salicylate in Zushima Guanjie Zhitong Gao prepared by solvent method were 73.72, 494.67 μg/patch, and their contents in hot-pressed method samples were 159.21, 2 638.99 μg/patch, respectively. In the solvent method samples, the average cumulative release amounts of 7,8-dihydroxycoumarin and methyl salicylate in 24 h were 2.04, 12.21 μg, and their average cumulative release amounts in 24 h of hot-pressed method samples were 2.16, 36.24 μg, respectively. In the solvent method samples, the average cumulative permeation amounts of 7,8-dihydroxycoumarin and methyl salicylate in 24 h were 0.38, 2.79 μg, and they were 0.40, 7.49 μg in hot-pressed method samples. The cumulative release and permeation amounts in 24 h of 7,8-dihydroxycoumarin in the hot-pressed method samples were basically the same as those of the solvent method samples, but the cumulative release and permeation amounts in 24 h of methyl salicylate in the hot-pressed method samples were significantly higher than those of the solvent method samples (<italic>P</italic><0.05). Conclusion:The retention of 7,8-dihydroxycoumarin and methyl salicylate by hot-pressed method is better than that of the solvent method. The process change has no significant effect on the <italic>in vitro</italic> kinetics of 7,8-dihydroxycoumarin in Zushima Guanjie Zhitong Gao, however, after the change from the solvent method to the hot-pressed method, the methyl salicylate in this preparation has a higher cumulative release and permeation amounts.

3.
Article in Chinese | WPRIM | ID: wpr-906170

ABSTRACT

Objective:To explore the possible mechanism of Huangqintang in treating ulcerative colitis (UC). Method:The animal model of UC was induced by dextran sodium sulfate (DSS).The experimental animals were divided into control group, model group,Huangqintang low dose (4.55 g·kg<sup>-1</sup>), medium dose (9.1 g·kg<sup>-1</sup>), and high dose(18.2 g·kg<sup>-1</sup>) groups. Intragastric administration was also given in the modeling process for 7 consecutive days. At the end of the 8th day, colon tissues were collected to measure colon length and mass, and calculate the colon mass index. Pathological changes were observed by hematoxylin-eosin (HE) staining. Serum iron content, superoxide dismutase (SOD), glutathione (GSH), catalase (CAT) and myeloperoxidase (MPO) were determined by biochemical assay. Western blot was used to detect the protein expression of glutathione peroxidase 4 (GSH-Px4), long-chain acyl-CoA synthetase 4 (ACSL4) and ferritin heavy chain 1(FTH1). The mRNA expression levels of tumor trotein 53 (P53) and solute carrier family 7 member 11 (SLC7A11) in colon tissues were detected by Real-time fluorescence quantitative polymerase chain reaction (Real-time PCR). Result:The experimental studies showed that compared with normal group, serum MPO and iron content, ACSL4 protein level and relative P53 mRNA expression in the model group significantly increased (<italic>P</italic><0.05), while serum SOD, CAT, GSH content, GSH-Px4, FTH1 relative protein expression level and relative SLC7A11 mRNA expression in the model group significantly decreased (<italic>P</italic><0.01). Compared with model group, serum MPO and iron content, ACSL4 protein level and relative P53 mRNA expression significantly decreased (<italic>P</italic><0.05), while serum SOD, CAT, GSH content, GSH-Px4, FTH1 relative protein expression level and relative SLC7A11 mRNA expression significantly increased (<italic>P</italic><0.05) after the intervention of Huangqintang, and the effect was most significant in the high-dose group (<italic>P</italic><0.05). The results of general condition, colon length, colon mass index and HE staining showed that Huangqintang could relieve clinical symptoms and histopathological changes in UC mice. Conclusion:These results indicated that Huangqintang had therapeutic effect on ulcerative colitis mice, and its mechanism might be related to inhibiting the oxidative stress and ferroptosis.

4.
Article in Chinese | WPRIM | ID: wpr-906119

ABSTRACT

Objective:To identify the transdermal constituents of Euodiae Fructus and predict its molecular mechanism in treating diarrhea by transdermal drug delivery. Method:Ultra performance liquid chromatography-quadrupole time-of-flight mass spectrometry (UPLC-Q-TOF-MS) and integrated pharmacology methods were used. The rapid identification of transdermal constituents of Euodiae Fructus was realized by the means of comparison of reference substances, analysis of UNIFI system and mass spectrometry. On this basis, Integrative Pharmacology-based Research Platform of Traditional Chinese Medicine (TCMIP) v2.0, SymMap, DisGeNET databases and literature were used to collected potential targets of transdermal constituents of Euodiae Fructus and targets for diarrhea-related diseases. The disease targets and drug targets were topologically analyzed to obtain the core targets, which were used for the Gene Ontology (GO) function and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis. Finally, Cytoscape 3.6.0 was used to build up a network of transdermal constituents-core targets-key pathways. Result:A total of 19 chemical constituents were speculatively identified from Euodiae Fructus extract, including quinolone alkaloids, limonins, indole alkaloids, organic acids and sterols. A total of 174 core targets of Euodiae Fructus for treating diarrhea were obtained by a topology analysis, signaling pathways of inflammatory response, cell proliferation, nutrient regulation and energy metabolism, signal transduction, bacterial infection were obtained through the analysis of KEGG enrichment. Conclusion:In this study, the transdermal constituents of Euodiae Fructus are identified for the first time, they can participate in the regulation of intestinal inflammation, maintain the integrity of intestinal mucosa, repaire and adjust the metabolism of the body by acting on Rac protein family, phosphatidylinositol 3-kinase, cytochrome P450 enzymes and aldo-keto reductase, respectively. In general, the molecular mechanism of Euodiae Fructus in the treatment of diarrhea is preliminarily elucidated.

5.
Article in English | WPRIM | ID: wpr-900384

ABSTRACT

Background/Aims@#Depressive symptom is one of the most common symptoms in patients with irritable bowel syndrome (IBS), but its pathogenetic mechanisms remain unclear. As a voxel-level graph theory analysis method, degree centrality (DC) can provide a new perspective for exploring the abnormalities of whole-brain functional network of IBS with depressive symptoms (DEP-IBS). @*Methods@#DC, voxel-wise image and clinical symptoms correlation and seed-based functional connectivity (FC) analyses were performed in 28 DEP-IBS patients, 21 IBS without depressive symptoms (nDEP-IBS) patients and 36 matched healthy controls (HC) to reveal the abnormalities of whole brain FC in DEP-IBS. @*Results@#Compared to nDEP-IBS patients and HC, DEP-IBS patients showed significant decrease of DC in the left insula and increase of DC in the left precentral gyrus. The DC’s z-scores of the left insula negatively correlated with depression severity in DEP-IBS patients.Compared to nDEP-IBS patients, DEP-IBS patients showed increased left insula-related FC in the left inferior parietal lobule and right inferior occipital gyrus, and decreased left insula-related FC in the left precentral gyrus, right supplementary motor area (SMA), and postcentral gyrus. In DEP-IBS patients, abstracted clusters’ mean FC in the right SMA negatively correlated with depressive symptoms. @*Conclusions@#DEP-IBS patients have abnormal FC in brain regions associated with the fronto-limbic and sensorimotor networks, especially insula and SMA, which explains the vicious circle between negative emotion and gastrointestinal symptoms in IBS. Identification of such alterations may facilitate earlier and more accurate diagnosis of depression in IBS, and development of effective treatment strategies.

6.
Article in English | WPRIM | ID: wpr-892680

ABSTRACT

Background/Aims@#Depressive symptom is one of the most common symptoms in patients with irritable bowel syndrome (IBS), but its pathogenetic mechanisms remain unclear. As a voxel-level graph theory analysis method, degree centrality (DC) can provide a new perspective for exploring the abnormalities of whole-brain functional network of IBS with depressive symptoms (DEP-IBS). @*Methods@#DC, voxel-wise image and clinical symptoms correlation and seed-based functional connectivity (FC) analyses were performed in 28 DEP-IBS patients, 21 IBS without depressive symptoms (nDEP-IBS) patients and 36 matched healthy controls (HC) to reveal the abnormalities of whole brain FC in DEP-IBS. @*Results@#Compared to nDEP-IBS patients and HC, DEP-IBS patients showed significant decrease of DC in the left insula and increase of DC in the left precentral gyrus. The DC’s z-scores of the left insula negatively correlated with depression severity in DEP-IBS patients.Compared to nDEP-IBS patients, DEP-IBS patients showed increased left insula-related FC in the left inferior parietal lobule and right inferior occipital gyrus, and decreased left insula-related FC in the left precentral gyrus, right supplementary motor area (SMA), and postcentral gyrus. In DEP-IBS patients, abstracted clusters’ mean FC in the right SMA negatively correlated with depressive symptoms. @*Conclusions@#DEP-IBS patients have abnormal FC in brain regions associated with the fronto-limbic and sensorimotor networks, especially insula and SMA, which explains the vicious circle between negative emotion and gastrointestinal symptoms in IBS. Identification of such alterations may facilitate earlier and more accurate diagnosis of depression in IBS, and development of effective treatment strategies.

7.
China Occupational Medicine ; (6): 495-501, 2021.
Article in Chinese | WPRIM | ID: wpr-923076

ABSTRACT

OBJECTIVE: To construct the RNA interference(RNAi) lentiviral vector of suppressor of variegation 3-9 homolog 1(Suv39 h1) and verify its interfering efficiency by transfecting it to the bone marrow-derived mesenchymal stem cells(BMSCs). METHODS: The oligonucleotides of RNA plasmid were designed and synthesized according to the gene sequence of Suv39 h1 and short hairpin RNA design principles. Three kinds of LV-Suv39 h1-RNAi recombinant plasmids with different lentivirus knockdown targets(KD1, KD2 and KD3) were constructed. After identification by restriction analysis and sequencing, the packaged lentivirus vectors with the three kinds of Suv39 h1 gene were transfected into rat BMSCs at logarithmic growth stage, and were named KD1, KD2 and KD3 transfection groups. The control group was transfected with the negative control virus. After 72 hours transfection, the transfection efficiency was evaluated, and the relative mRNA levels of Suv39 h1 were determined by quantitative real-time polymerase chain reaction(qPCR). RESULTS: Sequencing analysis demonstrated that three kinds of LV-Suv39 h1-RNAi recombinant plasmids were constructed correctly. The results of transfection efficiency evaluation showed that more than 80.00% green fluorescence was expressed in the BMSCs transfected with the three lentiviral vectors with a multiplicity of infection of 20. These results indicated that lentivirus was successfully constructed and transfection efficiency was high. The results of qPCR showed that the relative expression of Suv39 h1 mRNA in BMSCs of KD1, KD2 and KD3 transfection groups was lower than that in the control group(all P<0.05), and the relative expression of Suv39 h1 mRNA in KD1 and KD3 transfection groups was lower than that in KD2 transfection group(both P<0.05). However, there was no significant difference in the relative expression of Suv39 h1 mRNA between KD1 and KD3 transfection groups(P>0.05). CONCLUSION: The constructed lentiviral vector with low expression of Suv39 h1 was constructed successfully. This vector can be expressed in rat BMSCs, which lays a foundation to study the effect of Suv39 h1 gene in acute myeloid leukemia.

8.
Article in Chinese | WPRIM | ID: wpr-921780

ABSTRACT

Alzheimer's disease(AD) patients in China have been surging, and the resultant medical burden and care demand have a huge impact on the development of individuals, families, and the society. The active component compound of Epimedii Folium, Astragali Radix, and Puerariae Lobatae Radix(YHG) can regulate the expression of iron metabolism-related proteins to inhibit brain iron overload and relieve hypofunction of central nervous system in AD patients. Hepcidin is an important target regulating iron metabolism. This study investigated the effect of YHG on the expression of a disintegrin and metalloprotease-17(ADAM17), a key enzyme in the hydrolysis of β amyloid precursor protein(APP) in HT22 cells, by mediating hepcidin. To be specific, HT22 cells were cultured in vitro, followed by liposome-mediated siRNA transfection to silence the expression of hepcidin. Real-time PCR and Western blot were performed to examine the silencing result and the effect of YHG on hepcidin in AD cell model. HT22 cells were randomized into 7 groups: control group, Aβ25-35 induction(Aβ) group, hepcidin-siRNA(siRNA) group, Aβ25-35 + hepcidin-siRNA(Aβ + siRNA) group, Aβ25-35+YHG(Aβ+YHG) group, hepcidin-siRNA+YHG(siRNA+YHG) group, Aβ25-35+hepcidin-siRNA+YHG(Aβ+siRNA+YHG) group. The expression of ADAM17 mRNA in cells was detected by real-time PCR, and the expression of ADAM17 protein by immunofluorescence and Western blot. Immunofluorescence showed that the ADAM17 protein expression was lower in the Aβ group, siRNA group, and Aβ+siRNA group than in the control group(P<0.05) and the expression was lower in the Aβ+siRNA group(P<0.05) and higher in the Aβ+YHG group(P<0.05) than in the Aβ group. Moreover, the ADAM17 protein expression was lower in the Aβ+siRNA group(P<0.05) and higher in the siRNA+YHG group(P< 0.05) than in the siRNA group. The expression was higher in the Aβ+siRNA+YHG group than in the Aβ+siRNA group(P<0.05). The results of Western blot and real-time PCR were consistent with those of immunofluorescence. The experiment showed that YHG induced hepcidin to up-regulate the expression of ADAM17 in AD cell model and promote the activation of non-starch metabolic pathways, which might be the internal mechanism of YHG in preventing and treating AD.


Subject(s)
ADAM17 Protein , Alzheimer Disease/genetics , Amyloid beta-Peptides , Drugs, Chinese Herbal/pharmacology , Hepcidins/genetics , Humans , Pueraria
9.
International Eye Science ; (12): 2199-2201, 2021.
Article in Chinese | WPRIM | ID: wpr-904703

ABSTRACT

@#AIM: To analyze the characteristics of the contrast-enhanced ultrasound in orbital retrobulbar tumors, and to explore the application value of the contrast-enhanced ultrasound in the diagnosis of orbital retrobulbar tumors.<p>METHODS: The contrast-enhanced ultrasound data of the 52 patients(52 eyes)with orbital retrobulbar tumors in the Fourth People's Hospital of Shenyang from March 2012 to May 2015 were retrospectively analyzed. According to the pathological results, 41 eyes were divided into benign group and 11 eyes were malignant group. The time intensity(TI)curve and quantitative data were obtained by SonoLiver software.<p>RESULTS: The TI curve of benign group mainly showed fast in and slow out mode, while that of malignant group mainly showed fast in and fast out mode. Quantitative data: rise time(RT)and mean transit time(mTT)in malignant group were lower than those in benign group, while there was no significant difference in maximal intensity(IMAX)between the two groups(<i>P</i>>0.05).<p>CONCLUSION: Contrast-enhanced ultrasound can provide imaging basis for the differential diagnosis of orbital retrobulbar tumors which is helpful for the preoperative qualitative diagnosis.

10.
Article in English | WPRIM | ID: wpr-887737

ABSTRACT

Objective@#To evaluate multidrug resistant loop-mediated isothermal amplification (MDR-LAMP) assay for the early diagnosis of multidrug-resistant tuberculosis and to compare the mutation patterns associated with the @*Methods@#MDR-LAMP assay was evaluated using 100 @*Results@#The sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) of MDR-LAMP were 85.5%, 93.6%, 96.7%, and 74.4% for the detection of resistance to isoniazid and rifampicin, respectively, and 80.5%, 92.3%, 98.6%, and 41.4% for the detection of @*Conclusion@#MDR-LAMP is a rapid and accessible assay for the laboratory identification of rifampicin and isoniazid resistance of


Subject(s)
Antitubercular Agents , Bacterial Proteins/genetics , Catalase/genetics , DNA, Bacterial/analysis , DNA-Directed RNA Polymerases/genetics , Drug Resistance, Multiple, Bacterial/genetics , Isoniazid , Molecular Diagnostic Techniques/methods , Mutation , Mycobacterium tuberculosis/isolation & purification , Nucleic Acid Amplification Techniques/methods , Oxidoreductases/genetics , Phenotype , Rifampin , Whole Genome Sequencing
11.
China Occupational Medicine ; (6): 186-195, 2020.
Article in Chinese | WPRIM | ID: wpr-881884

ABSTRACT

OBJECTIVE: To explore the correlation between the cognition on hearing protection and mental health status of noise-exposed workers. METHODS: A total of 499 noise-exposed workers from 3 enterprises of coal mine, steel and textile in Xinjiang region were selected as study subjects by stratified cluster random sampling method. The cognitive status of hearing protection and mental health status of each group were investigated by the Workplace Health Promotion Pilot Project Questionnaire. RESULTS: A total of 235 workers had abnormal mental health status.The abnormal rate of mental health status was 47.1%(235/499). The results of logistic regression analysis showed that female, age ≤40.0 years, unable to bear current noise hazards, worried about noise-induced-deafness and noise-induced discomfort were the risk factors of abnormality of mental health status(odds ratio values were 1.62, 1.87, 2.42, 2.20, 2.14, P<0.05). Using hearing protectors for ≥3.0 years was the protective factor of abnormality of mental health status(odds ratio value was 0.47, P<0.05). CONCLUSION: The subjective cognition on hearing protection has an impact on the mental health of noise-exposed workers.

12.
Article in English | WPRIM | ID: wpr-881024

ABSTRACT

Hyperglycemia is the dominant phenotype of diabetes and the main contributor of diabetic complications. Puerarin is widely used in cardiovascular diseases and diabetic vascular complications. However, little is known about its direct effects on diabetes. The aim of our study is to investigate its antidiabetic effect in vivo and in vitro, and explore the underlying mechanism. We used type I diabetic mice induced by streptozotocin to observe the effects of puerarin on glucose metabolism. In addition, oxidative stress and hepatic mitochondrial respiratory activity were evaluated in type I diabetic mice. In vitro, glucose consumption in HepG2 cells was assayed along with the qPCR detection of glucogenesis genes expression. Moreover, ATP production was examined and phosphorylation of AMPK was determined using Western blot. Finally, the molecular docking was performed to predict the potential interaction of puerarin with AMPK utilizing program LibDock of Discovery Studio 2018 software. The results showed that puerarin improved HepG2 glucose consumption and upregulated the glucogenesis related genes expression. Also, puerarin lowered fasting and fed blood glucose with improvement of glucose tolerance in type I diabetic mice. Further mechanism investigation showed that puerarin suppressed oxidative stress and improved hepatic mitochondrial respiratory function with enhancing ATP production and activating phosphorylation of AMPK. Docking study showed that puerarin interacted with AMPK activate site and enhancing phosphorylation. Taken together, these findings indicated that puerarin exhibited the hypoglycemic effect through attenuating oxidative stress and improving mitochondrial function via AMPK regulation, which may serve as a potential therapeutic option for diabetes treatment.

13.
Article in English | WPRIM | ID: wpr-881023

ABSTRACT

Excess accumulation of white adipose tissue (WAT) causes obesity which is an imbalance between energy intake and energy expenditure. Obesity is a serious concern because it has been the leading causes of death worldwide, including diabetes, stroke, heart disease and cancer. Therefore, uncovering the mechanism of obesity and discovering anti-obesity drugs are crucial to prevent obesity and its complications. Browning, inducing white adipose tissue to brown or beige (brite) fat which is brown-like fat emerging in WAT, becomes an appealing therapeutic strategy for obesity and metabolic disorders. Due to lack of efficacy or intolerable side-effects, the clinical trials that promote brown adipose tissue (BAT) thermogenesis and browning of WAT have not been successful in humans. Obviously, more specific means still need to be developed to activate browning of white adipose tissue. In this review, we summarized seven kinds of natural products (alkaloids, flavonoids, terpenoids, long chain fatty acids, phenolic acids, else and extract) promoting white adipose tissue browning which can ameliorate the metabolic disorders, including obesity, dislipidemia, insulin resistance and diabetes. Since natural products are important drug sources and the browning property plays a significant role in not only obesity treatment but also in type 2 diabetes (T2DM) improvement, natural products of inducing browning may be an irreplaceable drug discovery orientation for obesity, diabetes and even other metabolic disorders.

14.
Chinese Journal of Rheumatology ; (12): 311-316, 2020.
Article in Chinese | WPRIM | ID: wpr-868208

ABSTRACT

Objective:To investigate the relationship between urate deposition on ultrasound and coronary artery calcification score in maintenance hemodialysis (MHD) patients.Methods:A total of 100 stable MHD patients undergoing hemodialysis for at least one year were enrolled in this study. All the patients had clinical and ultrasound examination at both knees, ankles and first metatarsophalangeal joints. Subgroup analysis was done depending on whether double contour sign (DCS) or tophus was found on ultrasound. The volume of coronary artery calcification (CAC) score were determined by a 64-slice CT. Main statistical analysis methods were t test, chi-square test, Spearman correlation and logistic regression model. Results:Among these 100 patients, DCS was found in 35 (35%) patients and tophus was found in 21 (21%) patients. The serum uric acid level, serum phosphate (P), parathyroid hormone (PTH), C-reactive protein (CRP) and incidence of CAC, CAC score of the DCS positive group [(629±61) μmol/L, (2.4±0.8) mmol/L, (658±56) pg/ml, (9.5±2.1) mg/L, 83%(29/35), (276±37), n=35] was significantly higher than the DCS negative group [(569±68) μmol/L, (2.0±0.6) mmol/L, (536±49) pg/ml, (7.9±3.1) mg/L, 59% (38/65), (219±42), n=65] ( t=4.322 6, P<0.01; t=2.712 6, P<0.01; t=11.293 1, P<0.01; t=2.700 3, P<0.01; t=5.070 1, P=0.024 3; t=6.827 6, P<0.01). The serum uric acid level was positively correlated with urate deposition on ultrasound ( r=0.317, P<0.05), which was positively correlated with CAC score ( r=0.302, P<0.05). The serum uric acid level, urate deposition on ultrasound and CAC score were all positively correlated with CRP ( r=0.298, P<0.05; r=0.345 , P<0.05; r=0.336, P<0.05) . Multivariate logistic regression analysis showed that the serum uric acid level and CRP were independent risk factors for positive DCS in MHD patients [ OR=3.040, 95% CI (1.507, 6.133); OR=3.438, 95% CI(1.822,6.489)]. Positive DCS and CRP were independent risk factors for CAC [ OR=3.504, 95% CI (1.414, 9.684); OR=3.885, 95% CI(1.364, 11.063)]. Conclusion:In MHD patients, positive DCS is related with high serum uric acid level and CRP. Positive DCS and CRP are independent risk factors for CAC.

15.
Chinese Journal of Endemiology ; (12): 610-613, 2020.
Article in Chinese | WPRIM | ID: wpr-866161

ABSTRACT

Objective:This paper analyzed the operation of network laboratory and external quality control assessment of endemic arsenic disease laboratories at all levels in Guizhou Province, to provide reliable experimental quality assurance for evaluating the prevention and treatment effect and taking targeted intervention measure of endemic arsenic poisoning.Methods:The results of network operation and external quality control (arsenic in water, arsenic in urine) were statistically analyzed from 2008 to 2017. The assessment scope included the arsenic detection laboratory of provincial (1), municipal (1) and county level (2) which undertook endemic arsenic poisoning monitoring tasks.Results:From 2008 to 2017, 1 provincial laboratory for the determination of arsenic in water and urine was qualified. From 2011 to 2017, 1 municipal laboratory for the determination of arsenic in water and urine was qualified. From 2014 to 2017, 2 county level laboratories for the determination of arsenic in water and urine were qualified. From 2014 to 2017, the water and urinary arsenic in provincial, municipal and county laboratories had been continuously assessed as all qualified. The │Z│ values of water arsenic in provincial laboratories from 2008 to 2017 and urine arsenic from 2009 to 2017 were ≤2, and the results were satisfactory. The │Z│ values of arsenic in water after 2010 and in urine after 2011 in municipal and one county level laboratories were ≤2, which were all qualified and the results were satisfactory.Conclusions:The network laboratory of endemic arsenic disease in Guizhou Province operates well. The quality control of the laboratory and the results of external quality control of arsenic samples meet the quality requirements of the national laboratory, which can provide accurate and reliable test data guarantee for the continuous elimination of endemic arsenic disease.

16.
Article in Chinese | WPRIM | ID: wpr-873201

ABSTRACT

Objective:Aphanamixis grandifolia,a perennial herb of genus Aphanamixis (Meliaceae),has effects in soothing activating collaterals,dredging paisy,expelling wind-evil and removing wetness. This paper aimed to investigate terpenoids from the stems and leaves of A. grandifolia and reveal the effective substances. Method:Totally 22 kg leaves and twigs of A. grandifolia were extracted with 90% EtOH for three times by heating reflux. These extracts were decompressed and concentrated,and then dissolved in water. The solvent was successively extracted with petroleum ether and ethyl acetate. The chemical constituents from petroleum ether and ethyl acetate fractions were isolated by macroporous,silica gel,Sephadex LH-20 and ODS columns,and their chemical structures were determined through MS,NMR analysis(1H and 13C-NMR)and spectroscopic data from literatures,respectively. Result:Twelve compounds were obtained and identified as 16α-hydroxy-3-oxo-24-methyllanosta-7,9(11),24(31)-triene-21-oic acid (1),23(E)-cycloart-en-25-ethoxy-3-ol(2),23(Z)-9,19-cycloart-ene-3β,25-diol(3),23(E)-cycloart-en-3β,25-diol(4),labda-8,13-(E)-dien-15-ol(5),labda-7,13-(E)-dien-15-ol(6),vulgarol(7),(S,E)-6-[6-(5,5-dimethyl-4-oxo-4,5-dihydrofuran-3-yl]-2-methylhepta-1,6-dien-1-yl]-4-methyl-5,6-dihydro-2H-pyran-one(8),nemoralisin(9),nemoralisin C(10),1S,4R,5S,6R,7S,10S-1(5),6(7)-diepoxy-4-guaiol(11) and 1S,4S,5S,10R-4,10-guaianediol(12),respectively. Conclusion:The structures involves triterpenoids,diterpenoids and sesquiterpennoids,and eight of them (1-3,5-8 and 12) are obtained from A. grandifolia for the first time. Those compounds are also isolated from the geneus Aphanamixis for the first time.

17.
Chinese Medical Journal ; (24): 1768-1773, 2020.
Article in English | WPRIM | ID: wpr-827562

ABSTRACT

BACKGROUND@#Hypothermia is associated with many adverse clinical outcomes in pediatric patients, and thus, it is important to find an effective and safe method for preventing peri-operative hypothermia and its associated adverse outcomes in pediatric patients. This study aimed to investigate the effect of forced-air warming blankets with different temperatures on changes in the transforming growth factor-β (TGF-β), tumor necrosis factor (TNF)-α, interleukin (IL)-1β, and IL-10 levels in children undergoing surgical treatment for developmental displacement of the hip (DDH).@*METHODS@#The study included 123 children undergoing surgery for DDH under general anesthesia. The patients were randomly assigned to three groups, using a random number table: the 32, 38, and 43°C groups according to the temperature setting of the forced-air warming blankets. For each patient, body temperature was recorded immediately after anesthesia induction and intubation (T0), at initial incision (T1), at 1 h after incision (T2), at 2 h after incision (T3), at the end of surgery (T4), immediately upon return to the ward after surgery (T5), and then at 12 h (T6), 24 h (T7), 36 h (T8), and 48 h (T9) after the surgery. The serum levels of TGF-β, TNF-α, IL-1β, and IL-10 were measured at T0 and T4 for all groups.@*RESULTS@#The number of patients with fever in the 38°C group was significantly less than those in the 32 and 43°C groups (χ = 6.630, P = 0.036). At T0, the body temperatures in the 38 and 43°C groups were significantly higher than that in the 32°C group (F = 17.992, P < 0.001). At T2, the body temperature was significantly higher in the 43°C group than those in the 32 and 38°C groups (F = 12.776, P < 0.001). Moreover, at T4, the serum levels of TGF-β (F = 3286.548, P < 0.001) and IL-10 (F = 4628.983, P < 0.001) were significantly increased in the 38°C group, and the serum levels of TNF-α (F = 911.415, P < 0.001) and IL-1β (F = 322.191, P < 0.001) were significantly decreased in the 38°C group, compared with the levels in the 32 and 43°C groups.@*CONCLUSION@#Force-air warming blankets set at 38°C maintained stable body temperature with less adverse outcome and effectively inhibited the inflammatory response in pediatric patients undergoing surgery for DDH.@*CLINICAL TRIAL REGISTRATION@#ChiCTR1800014820; http://www.chictr.org.cn/showproj.aspx?proj=25240.

18.
Acta Physiologica Sinica ; (6): 407-417, 2020.
Article in Chinese | WPRIM | ID: wpr-827047

ABSTRACT

Oxygen levels are unequal in different living geographical locations of human and related to normal physiology of health. The reduction of oxygen level in the body can lead to a variety of diseases, such as stroke caused by cerebral ischemia and hypoxia. In the recent years, many studies have elucidated the molecular and cellular mechanisms of organism response to different oxygen concentrations by using the nematode Caenorhabditis elegans (C. elegans) as model organism. C. elegans can escape hypoxia or hyperoxia and adapt to the ambient oxygen environments, and there are different response and regulation mechanisms in different degrees of hypoxia environment. In this paper, recent advances in the reaction of nematodes to different oxygen concentrations and the underlying mechanism were reviewed.


Subject(s)
Animals , Caenorhabditis elegans , Caenorhabditis elegans Proteins , Humans , Hypoxia , Oxygen
19.
Article in Chinese | WPRIM | ID: wpr-755177

ABSTRACT

Objective To study the early diagnosis,surgical treatment options,prevention and management of complications in patients with duodenal trauma.Methods All patients with duodenal trauma treated operatively from January 2009 to December 2018 were studied retrospectively.Factors including sex,age,cause of injury,AAST grading,diagnostic method,operative procedure,therapeutic effectiveness,complications,and factors related to death were analyzed.The "double-tube gastrostomy" technique consisting of duodenal decompression and jejunal feeding as recommend by the authors were used in severe cases.Results Blunt trauma occurred in 66 of 86 patients (76.7%).The diagnosis of duodenal trauma was made preoperatively based on abdominal signs,peritoneocentesis,and imaging in 32 patients (37.2%).The remaining 54 patients (62.8%),with duodenal injury was detected during emergency laparotomy.All the 86 patients underwent surgical intervention which included simple suturing,pedicled jejunal flap,segmental resection and anastomosis,Roux-en-Y duodenojejunostomy,diverticularization,and Whipple's procedure using the principle of Damage Control Surgery (DCS).Postoperative morbidity occurred in 15 patients (17.4%).There was a high incidence of duodenal (or pancreatic,biliary) fistulae.The overall mortality rate was 12.8% (in 11 patients).The causes of deaths were mainly massive bleeding and poly-trauma.Conclusions To decrease morbidity and mortality rates,early diagnosis and surgical intervention were critical.The choice of surgical treatment procedures should be based on the duodenal trauma grading and whether there were associated injuries.For patients with a combined pancreaticoduodenal trauma,DCS is a wise procedure to adopt.The double-tube gastrostomy technique as recommended by the authors is beneficial to severe cases in decreasing the incidences of postoperative duodenal and jejunal obstruction.

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Article in Chinese | WPRIM | ID: wpr-779551

ABSTRACT

Objective We aimed to elucidate the prevalence and the antibiotic resistance spectrum of nasal coagulase-negative staphylococci (CoNS) colonization among HIV infectors in Guangzhou. Method After isolation and identification, all CoNS isolates were tested for the antibiotic susceptibility, and the antibiotic resistance genes. Result Among the 1 001 HIV infectors, the prevalence of CoNS and MRCoNS were 57.44% and 48.15%, respectively. The three predominant resistant antibiotics of MRCoNS isolates were penicillin, erythromycin and trimethoprim-sulfame thoxazole, while predominant detection rates of genes were Aac(6’)-aph(2’)、ermC and linA genes. The multidrug resistance rate of MRCoNS isolates were significantly higher than methicillin-susceptible coagulase-negative staphylococci (MSCoNS) isolates (80.69% versus 39.66%, P<0.001, OR=6.36). Conclusions The prevalence and multidrug resistant rates of nasal colonization CoNS and MRCoNS are high among HIV infectors in Guangzhou. MRCoNS isolates were 6.36 times more likely to be of multidrug resistance than MSCoNS isolates.

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