Distribution characteristics of pathogenic bacteria in hospitalized HIV/AIDS patients with wound infection in Yunnan / 中国热带医学

@#Abstract: Objective　To analyze the distribution characteristics of the main pathogens of HIV/AIDS patients with wound infections and provide basis for clinical diagnosis and treatment. Methods　The clinical data of 294 patients with positive secretions or pus specimens from 2016 to 2020 were analyzed retrospectively. Results　A total of 357 strains of pathogenic bacteria were isolated from 294 cases, of which 123 strains of Gram-negative bacilli (G-b), accounting for 34.5%, were mainly Escherichia coli (15.4%), Klebsiella pneumoniae (3.9%), and Pseudomonas aeruginosa (3.6%); Gram-positive bacilli (G+b) 14 strains, accounting for 3.9%; 108 Gram-positive cocci (G+c), accounting for 30.3%, of which 44 strains were coagulase-positive Staphylococcus aureus (12.3%), Coagulase-negative staphylococci were mainly Staphylococcus epidermidis (4.2%) and Staphylococcus hemolyticus (2.8%); 37 strains of fungi, accounting for 10.4%, were mainly Candida albicans (5.9%); 75 strains of Mycobacterium, accounting for 21.0%, including 41 strains of Mycobacterium tuberculosis (11.5%) and 34 strains of non-tuberculosis mycobacteria (9.5%). 52 of the 294 HIV/AIDS patients had mixed infections, accounting for 17.7%. There was significant difference in the distribution of G+c, G-b, mycobacteria and mixed infection among different specimen sources (P<0.05), and there was significant difference in the distribution of mycobacteria among different CD4+T lymphocyte counts (P<0.05). There was significant difference in the level of CD4+T lymphocytes between patients of different ages (P<0.05), and there was significant difference in the level of CD4+T lymphocytes from postoperative incision and other parts (P<0.05). Conclusions　Patients with HIV/AIDS are prone to combined wound infections with various pathogenic bacteria. We should strengthen the research on wound infection in HIV/AIDS patients, and timely send patients with a low number of CD4+T lymphocytes for secretion or pus culture, so as to carry out targeted treatment and improve the prognosis of patients.

Clinical characteristics of dry eye in patients with type 2 diabetic peripheral neuropathy / 国际眼科杂志(Guoji Yanke Zazhi)

AIM: To investigate the clinical features of dry eye in patients with type 2 diabetes mellitus complicated with peripheral neuropathy.METHOD: Prospective cohort study. A total of 192 patients with type 2 diabetes were enrolled in the Department of Endocrinology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine from July 2021 to March 2022. The right eyes of all patients were selected as the observation eye, among which 122 patients were diagnosed with diabetic peripheral neuropathy(DPN)and 70 patients were diagnosed with non-diabetic peripheral neuropathy(NDPN). The score of ocular surface disease index(OSDI), tear meniscus height, tear meniscus width, corneal epithelial thickness, corneal endothelial cell density, tear secretion test(Schirmer Ⅰ test, SⅠt), corneal sensitivity, meibomian gland function status score, tear film breakup time(BUT), corneal fluorescein sodium staining score and Toronto clinical scoring system(TCSS)score were compared between two groups. The correlation between OSDI score and TCSS score in type 2 diabetes patients was analyzed as well.RESULTS: The morbidity of dry eye in the DPN group(55 eyes, 45.1%)was significantly higher than that of NDPN group(20 eyes, 28.6%; χ2=5.094, P=0.024), BUT and corneal sensitivity score of DPN were lower than NDPN group(P&#x003C;0.001), meanwhile, corneal staining score and meibomian gland function score were higher than NDPN group(P&#x003C;0.001). OSDI scores of all subjects were negatively correlated with TCSS scores(rs=-0.233, P=0.002), and OSDI scores of DPN group were negatively correlated with TCSS scores(rs=-0.511, P&#x003C;0.001), but there was no significant correlation between the two scores of NDPN patients(rs=0.007, P=0.957).CONCLUSIONS: DPN patients are more likely to develop dry eye than NDPN patients. OSDI score is not an accurate evaluation index for type 2 diabetes patients, especially for DPN patients.

Image-guided Strategy of Intensity-modulated Radiotherapy in Helical Tomography for Nasopharyngeal Carcinoma / 中山大学学报(医学科学版)

ObjectiveThis study aimed to analyze the difference in setup error before and after correction of systematic error. To determine the most appropriate image-guided strategy during HT treatment， we use different scanning ranges and image-guidance frequencies in patients with nasopharyngeal carcinoma （NPC） treated with helical tomotherapy （HT）. MethodsFifteen patients with NPC who received HT treatment in Sun Yat-sen University Cancer Center from October 2019 to February 2020 were selected. Megavoltage computed tomography （MVCT） scanning was performed before each treatment. After five times of radiotherapy， system-error correction was performed to adjust the setup center. The setup errors before and after the correction of systematic errors， as well as the setup errors of different scanning ranges and different scanning frequencies， were collected for analysis and comparison. ResultsWhen comparing the setup errors before and after the correction of systematic error， the differences in setup errors in the left–right （LR）， superior–inferior （SI）， and anterior–posterior （AP） directions were statistically significant （P<0.05）.The different scanning ranges of "nasopharynx + neck" and "nasopharynx" were compared， and a statistically significant difference was found in yaw rotational errors （P<0.05）. In the comparison of daily and weekly scan frequency after system-error correction， a significant difference was found in AP direction （P<0.05）. ConclusionDuring radiotherapy for NPC， the systematic error can be corrected according to the first five setup errors， and then small-scale scanning was selected for image-guided radiotherapy every day.

Epidemiological research progress on the relationship between children's dietary patterns and health / 中华预防医学杂志

As food preferences and eating habits form early in life, the development of healthy eating habits in early childhood is a way to prevent diet-related diseases. The dietary pattern approach examines the effect of an overall diet on health outcomes, instead of individual foods or nutrients, thereby presenting a comprehensive evaluation of children's dietary intake. This article reviews the current literature to summarize the main methods for assessing dietary patterns and explore relationships between children's dietary patterns and obesity, puberty onset, cardiovascular diseases, and neurodevelopment. The purpose of this review is to provide evidence-based support for reducing the risk of diet-related diseases in children and recommendations for future research directions.

Application of hierarchical classification method of teaching in the standardized residency training of department of gastroenterology / 中华医学教育探索杂志

Objective:To analyze the application and effects of hierarchical classification method of teaching in the rotation of resident physicians in department of gastroenterology.Methods:From September 2018 to July 2019, there were 84 residents who were selected as research objects including 55 physicians and 29 non-physicians rotating in the Department of Gastroenterology, The Second Affiliated Hospital Zhejiang University School of Medicine. According to seniority, there were 46 low-seniority physicians and 38 high-seniority physicians, respectively. Their performance and satisfaction were evaluated by hierarchical classification method of teaching. SPSS 21.0 was used for t test and chi-square test. Results:There were no significant differences in the score and passing rate of written examination and medical record writing between the physicians and non-physicians ( P >0.05). The skill operation examination scores of physicians were higher than those of non-physicians, and the interview scores and passing rate of physicians were also higher than those of non-physicians, with significant differences ( P<0.05). There were no significant differences between the scores of written examination, interview, medical record writing and skill operation and the passing rate of residents in the low-seniority physicians and high-seniority physicians ( P >0.05). Furthermore, all residents with different seniority and professional background were satisfied with this teaching method. Conclusion:Hierarchical classification method of teaching can effectively improve the teaching quality of residents in department of gastroenterology, and improve the satisfaction of residents with teaching, which is deserved to be generalization and application.

The role of FGF21 in inhibition of heart failure with empagliflozin and related mechanisms / 药学学报

The aim of this study is to investigate the role of fibroblast growth factor 21 (FGF21) in empagliflozin (EMP) in treatment of heart failure and the related mechanisms. FGF21 knockout (FGF21 KO) and littermate wild-type (WT) mice induced by doxorubicin (Dox) were used to establish heart failure mouse model in vivo. The experiment process and animal welfare follow the regulations of Animal Ethics Committee of Hefei University of Technology strictly. The results suggest that Dox (5 mg·kg-1) induced typical heart failure symptoms in both WT and FGF21 KO mice. In WT mice, EMP (10 mg·kg-1) significantly improved Dox-induced cardiac atrophy, decreased myocardial systolic function, decreased left ventricular ejection fraction and shortened fraction; EMP treatment also significantly inhibited the increase of Dox-induced cardiotoxicity indexes (aspartate amino transferase, creatine kinase, hydroxybutyrate dehydrogenase, lactate dehydrogenase) in mice. Dox induced cardiac fibrosis, inflammation and oxidative stress were also significantly improved by EMP. However, in FGF21 KO mice, the therapeutic effects of EMP on heart failure was significantly inhibited. The results suggest that the function of EMP in treating heart failure partly depends on the presence of FGF21, and the mechanism may be related to the effect of FGF21 on improving fibrosis, inflammation and oxidative stress.

Klotho promotes high-glucose-mediated autophagy of human renal tubule cells / 中国医师杂志

Objective:To investigate the effects of Klotho on autophagy of human renal tubule cells under high glucose through AMP-activated protein kinase (AMPK) and extracellular signal regulated kinase (ERK) pathways.Methods:Human renal tubular epithelial cells cultured in vitro were divided into control group and high glucose group (HG group, added with 30 mmol/L glucose); According to the transfection of pcDNA3.1-vector or pcDNA3.1-Klotho, they were divided into two groups: Vector group and Klotho group; According to whether AMPK inhibitor compound C or ERK inhibitor curcumin was added after pcDNA3.1-Klotho transfection and high glucose stimulation, they were divided into four groups: HG+ Vector group, HG+ Klotho group, HG+ Klotho+ compound C group and HG+ Klotho+ curcumin group. The expression of Klotho was detected by real-time fluorescent quantitative polymerase chain reaction (qRT-PCR) and Western blot; The relative expression of LC3-Ⅱ/LC3-Ⅰ and p-AMPK/AMPK and p-ERK/ERK were detected by Western blot; Changes of autophagosome in human renal tubular epithelial cells observed by transmission electron microscope. Results:The protein and mRNA expression of Klotho in human renal tubular epithelial cells of HG group was significantly lower than that in the control group (all P<0.05); The LC3-Ⅱ/LC3-Ⅰ in Klotho group was significantly higher than that in Vector group ( P<0.05); The number of autophagosomes in Klotho group was also significantly higher than that in Vector group ( P<0.05); p-AMPK/AMPK in Klotho group was significantly higher than that in Vector group ( P<0.05), while p-ERK/ERK in Klotho group was significantly lower than that in Vector group ( P<0.05). The protein relative expression of p-AMPK/AMPK in HG+ Klotho+ compound C group (0.44±0.04) was significantly lower than that in HG+ Klotho group (0.79±0.08) ( P<0.01); The protein relative expression of p-ERK/ERK in HG+ Klotho+ curcumin group (1.05±0.12) was significantly higher than that in HG+ Klotho group (0.56±0.05) ( P<0.01). The relative expression of LC3-Ⅱ/LC3-Ⅰ protein in HG+ Klotho+ compound C group and HG+ Klotho+ curcumin group (0.79±0.12; 0.68±0.09) were significantly lower than that in HG+ Klotho group (1.65±0.20) (all P<0.01). Conclusions:Klotho can enhance autophagy of human renal tubular epithelial cells under high glucose condition by activating AMPK and inhibiting ERK pathway.

Effects of curcumin on memory follicular T cells in obese mice with colitis / 药学学报

This study evaluated the regulatory effect of curcumin on memory follicular T cells (mTf) in obese mice with ulcerative colitis on the basis of determining its effective treatment of ulcerative colitis in obese mice. Forty male leptin mutant (ob/ob) mice were randomly divided into control group, control + curcumin group, dextran sodium sulfate (DSS) group and DSS + curcumin group, with 10 mice in each group. Mice in the DSS group and the DSS + curcumin group were induced by DSS to establish chronic ulcerative colitis model, and mice in the control + curcumin group and the DSS + curcumin group were given curcumin (200 mg·kg-1·d-1) by intragastric administration. Mice were sacrificed under anesthesia, and colon mass index, colon length and other conditions were observed in each group. Pathological injury of colonic was performed after HE staining. The levels of memory follicular helper T cells (mTfh) and memory follicular regulatory T cells (mTfr) in spleen of mice were detected by flow cytometry. The expression levels of interleukin-10 (IL-10) and interleukin-17A (IL-17A) in colon tissue were detected by ELISA. The results showed that curcumin significantly increased the body weight and colon length of obese mice with colitis, and decreased the colon weight, colon mass index and pathological score (P < 0.05). Curcumin significantly reduced the levels of central memory follicular T cells (cmTf), mTfh1, mTfh17 cells and the content of pro-inflammatory cytokine IL-17A (P < 0.01). The levels of effector memory follicular T cells (emTf) and mTfr and the content of anti-inflammatory cytokine IL-10 were increased (P < 0.05, P < 0.01). Therefore, curcumin may treat colitis in obese mice by regulating the balance of mTf cell subsets.

Effect of auricular point sticking therapy on perioperative pain in patients with partial lung resection / 中国针灸

OBJECTIVE@#To observe the analgesic effect of auricular point sticking therapy during the perioperative stage in the patients with partial lung resection.@*METHODS@#A total of 92 patients with partial lung resection were randomized into an auricular point group (31 cases, 1 case dropped off), the sham-auricular point group (30 cases) and a medication group (31 cases, 1 case dropped off). The routine medication for analgesia was provided in all of the three groups. In the auricular point group, 1 day before operation, the auricular point sticking therapy was applied at shenmen (TF@*RESULTS@#In 8, 16, 24, 48 h and 72 h after operation, VAS scores in the auricular point group were lower than those in the sham-auricular point group and the medication group separately (@*CONCLUSION@#Auricular point sticking therapy relieves perioperative pain, shortens analgesic time, releases anxious and depressive emotions and reduces postoperative adverse reaction in the patients with partial lung resection. The analgesic mechanism is probably related to the increase of plasma concentration of β-endorphin.

Biomarkers and Target Mechanisms of Epimedii Folium Intervention on Breast Cancer Stem Cells Based on Chip Analysis and Network Pharmacology / 中国实验方剂学杂志

Objective:To elucidate the potential molecular markers and drug-compound-target mechanism of Epimedii Folium intervention on breast cancer stem cells（BCSCs） through chip analysis combined with network pharmacology and experimental validation. Method:Relevant drug information was retrieved in Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform （TCMSP） to obtain the active components and potential targets of Epimedii Folium. "Breast Cancer Stem Cells" were searched in Gene Expression Omnibus（GEO）database，and GSE98239 chip data were obtained through analysis and screening. Then GEO2R online analysis tool was used to obtain the differential genes to draw differential gene heat map and volcano map. The differential gene network map of Epimedii Folium intervention for breast cancer stem cells was constructed by Cytoscape 3.8.0，and Gene Ontology（GO） and Kyoto Encyclopedia of Genes and Genomes（KEGG）enrichment analysis of drug and disease genes were performed. Human breast cancer MDA-MB-231 cells were divided into 20%，40%，60% Epimedii Folium drug-containing serum group and control group. Cell counting kit-8（CCK-8），and Western blot were used to detect the effect of Epimedii Folium drug-containing serum intervention on cell activity and target protein expression in breast cancer cells. Result:Twenty-three active components including flavones，sterols，alkaloids and sesquiterpenoids were obtained from Epimedii Folium. It was found that Epimedii Folium interacted with B-cell lymphoma-2-like protein 1（BCL2L1），matrix metallopeptidase 2（MMP2），prostaglandin-endoperoxide synthase 2（PTGS2），vascular endothelial growth factor A（VEGFA），transforming growth factor beta receptor 1（TGFBR1） and other pivotal genes in breast cancer stem cells，participated in the induction of new angiogenesis and cell migration，enabled the continuous self-renewal of BCSCs，decreased apoptosis and cell migration，thus promoting the recurrence and metastasis of breast cancer. KEGG results showed that Epimedii Folium intervened in multiple differential expressed genes（DEGs）of transforming growth factor-<italic>β</italic>（TGF-<italic>β</italic>），vascular endothelial growth factor（VEGF），phosphoinositide 3kinase/protein kenase B（PI3K/Akt），mitogen-activated protein kinese（MAPK）and mammalian target of rapamycin（mTOR）subpathways in cancer signaling pathways to exert its efficacy in intervening breast cancer stem cells. Experiments showed that the survival rate of breast cancer cells was significantly reduced and the expression levels of TGFBR1 and Smad2 in breast cancer cells significantly decreased after the intervention of Epimedii Folium drug-containing serum（<italic>P</italic><0.01）. Conclusion:Several components in different concentrations of drug-containing serum of Epimedii Folium can synergistically act on target differentially expressed genes of breast cancer stem cells，and inhibit the proliferation of breast cancer cells by down-regulating the expression levels of TGFBR1，a key molecule in the TGF-<italic>β</italic> pathway，and Smad2，a downstream signal.

Regulatory Effect of Xiangshenwan on TLR/NF-κB Signal in Colonic Mucosa of Mice with Colitis / 中国实验方剂学杂志

Objective:To explore the effect and mechanism of Xiangshenwan on ulcerative colitis （UC） induced by dextran sulfate sodium （DSS） in mice based on the classic Toll-like receptor （TLR）/nuclear factor kappa B （NF-<italic>κ</italic>B） signaling pathway. Method:The experimental mice were divided into a normal group， a model group， a Xiangshenwan group， and a mesalazine group. The mice， except for those in the normal group， received 3% DSS solution for 7 days to establish the acute UC model and were treated with Xiangshenwan （5 g·kg^-1） and mesalazine （300 mg·kg^-1） continuously from the 1st day to the 10th day of modeling. The body weight， disease activity index （DAI）， colon weight， intestinal weight index， colon length， colon weight per unit length， and pathological changes of mice were evaluated respectively. The protein expression of TLR5， myeloid differentiation factor 88 （MyD88）， interleukin-1 receptor-associated kinase 4 （IRAK4）， tumor necrosis factor receptor-associated factor 6 （TRAF6）， transforming growth factor <italic>β</italic>-activated kinase 1 （TAK1）， p38 mitogen-activated protein kinase （MAPK）， NF-<italic>κ</italic>B， IRAK1， TAK1-binding protein 1 （TAB1）， TAB2， mitogen-activated protein kinase kinase 3 （MKK3）， MKK6 and cyclic adenosine monophosphate response element-binding protein （CREB） in colon tissues of mice was detected by Western blot. Result:Compared with the normal group， the model group showed decreased body weight of mice， increased DAI scores， elevated colon weight， intestinal weight index， and colon weight per unit length， shortened colon length， severe colonic mucosal injury， and up-regulated protein expression of TLR5， MyD88， IRAK4， TRAF6， TAK1， p38 MAPK， NF-<italic>κ</italic>B， IRAK1， TAB1， TAB2， MKK3， MKK6， and CREB in colon tissues （<italic>P</italic><0.05，<italic> P</italic><0.01<bold>）.</bold> Compared with the model group， the Xiangshenwan group and the mesalazine group displayed increased body weight of mice， decreased DAI scores， declining colon weight， intestinal weight index， and colon weight per unit length， increased colon length， improved colonic mucosal injury， and down-regulated protein expression of TLR5， MyD88， IRAK4， TRAF6， TAK1， p38 MAPK， NF-<italic>κ</italic>B， IRAK1， TAB1， TAB2， MKK3， MKK6， and CREB in colon tissues （<italic>P</italic><0.05，<italic> P</italic><0.01）. Conclusion:Xiangshenwan can effectively treat DSS-induced UC presumedly by the inhibition of TLR/NF-<italic>κ</italic>B signaling pathway.

HPLC Fingerprint Analysis and Multi-component Determination of Substance Benchmark of Yiweitang / 中国实验方剂学杂志

Objective:To establish high performance liquid chromatography （HPLC） fingerprint and multi-component determination for the substance benchmark of Yiweitang， and to evaluate its quality in combination with chemical pattern recognition method. Method:Fifteen batches of substance benchmark of Yiweitang were prepared， the "Chinese medicine chromatographic fingerprint similarity evaluation system" （2012 edition） was used to calculate similarity. Cluster analysis， principal component analysis and orthogonal partial least squares-discriminant analysis were employed to handle the common peaks for evaluating the quality difference among 15 batches of the substance benchmark. The contents of catalpol， verbascoside and methylophiopogonanone A were determined with mobile phase system of acetonitrile-phosphoric acid solution at detection wavelengths of 210 nm and 334 nm. Result:There were 22 common peaks in HPLC fingerprint of the substance benchmark， among them， peaks 1， 9， 12， 14-17， 19 and 20 belonged to Rehmanniae Radix， peaks 3， 4， 6， 7 and 21 belonged to Glehniae Radix， peaks 5 and 22 belonged to Ophiopogonis Radix， peaks 2 and 18 belonged to Polygonati Odorati Rhiaoma， peak 8 was the common peak of Ophiopogonis Radix and Rehmanniae Radix， peak 10 was shared by Ophiopogonis Radix， Polygonati Odorati Rhiaoma<italic> </italic>and<italic> </italic>Rehmanniae Radix， peak 11 was the common peak of these four herbs， and peak 13 was shared by Polygonati Odorati Rhiaoma and Rehmanniae Radix. The similarities between HPLC fingerprints of 15 batches of the substance benchmark and the control fingerprint were all >0.90， the samples could be divided into four categories by three chemical pattern recognition methods. Quantitative analysis showed that the contents of catalpol， verbascoside and methylophiopogonanone A among 15 batches of samples ranged from 0.37% to 1.14%， 0.002% to 0.054% and 0.016% to 0.079%， respectively. Conclusion:The established fingerprint and determination for the substance benchmark of Yiweitang have good separation and high accuracy， which reflect the overall chemical composition characteristics of Yiweitang， and can provide experimental basis for the further development and quality control of the compound preparations of this famous classical formula.

Regulatory Effect of Volatile Oil from Sishenwan on TLR/MyD88 Signaling Pathway in Mice with Chronic Ulcerative Colitis / 中国实验方剂学杂志

Objective:To explore the underlying mechanism of volatile oil from Sishenwan in treating chronic ulcerative colitis through the Toll-like receptor （TLR）/myeloid differentiation factor 88 （MyD88） signaling pathway. Method:The BALB/c mice were randomly divided into a normal group （normal）， a model group ［dextran sodium sulfate （DSS）］， a Sishenwan volatile oil group， an Ershen pill volatile oil group， a Wuweizi powder volatile oil group， and a mesalazine control group. The chronic ulcerative colitis model was induced by DSS in mice. Seven days after intragastric administration， the efficacy was evaluated based on the body weight， colon weight， colon weight index， colon length， and pathological damage score under colonoscopy. The levels of interleukin （IL）-4， IL-10， IL-17A， IL-21， and interferon-<italic>γ </italic>（IFN-<italic>γ</italic>） in the supernatant of colon tissues were detected by enzyme-linked immunosorbent assay （ELISA）. Western blot was used to detect the expression levels of proteins related to the TLR/MyD88 signaling pathway in the colon mucosa of mice， including TLR2， MyD88， Ras-related C3 botulinum toxin substrate 1 （Rac1）， IL-1 receptor-associated kinase 4 （IRAK4）， IRAK1， tumor necrosis factor receptor （TNFR）-associated factor 6 （TRAF6）， transforming growth factor-<italic>β</italic>-activated kinase 1 binding protein 1 （TAB1）， TAB2， mitogen-activated protein kinase kinase 6 （MKK6）， p38 mitogen-activated protein kinase （p38 MAPK）， and cyclic adenosine monophosphate response element-binding protein （CREB）. Result:Compared with the normal group， the model group showed decreased colon length， increased colon weight， colon weight index， and pathological damage score under colonoscopy， decreased IL-10 level in the colon tissues， increased IL-4， IL-17A， IL-21， and IFN-<italic>γ</italic> levels （<italic>P<</italic>0.05， <italic>P<</italic>0.01）， and up-regulated protein expression of TLR2， MyD88， Rac1， IRAK4， IRAK1， TRAF6， TAB1， TAB2， MKK6， p38MAPK， and CREB （<italic>P<</italic>0.01）. Compared with the model group， the Sishenwan volatile oil group showed increased colon length， reduced colon weight， colon weight index， and pathological damage score under colonoscopy， elevated IL-10 level in the colon tissues， decreased IL-4， IL-17A， IL-21， and IFN-<italic>γ</italic> levels （<italic>P<</italic>0.05， <italic>P<</italic>0.01），and down-regulated protein expression of TLR2， MyD88， Rac1， IRAK4， IRAK1， TRAF6， TAB1， TAB2， MKK6， p38MAPK， and CREB （<italic>P<</italic>0.05， <italic>P<</italic>0.01）. Conclusion:The volatile oil from Sishenwan can effectively improve the inflammatory response of chronic ulcerative colitis， which may be achieved by regulating the TLR/MyD88 signaling pathway.

Changes in chemical compositions of Chrysanthemi Flos after frying and protective effects on CCl_4-induced acute liver injury in mice / 中国中药杂志

To reveal the processing mechanism of Chrysanthemi Flos from the changes of chemical compositions after frying and its effect on the efficacy of liver protection. Ultra performance liquid chromatography-quadrupole-time of flight-mass spectrometry(UPLC-Q-TOF-MS) and ultra high performance liquid chromatography(HPLC) were used for the qualitative and quantitative researches of chemical compositions before and after Chrysanthemi Flos frying. Progenesis QI and SPSS software were used for principal component analysis(PCA), partial least squares discriminant analysis(PLS-DA), variable importance projection(VIP) analysis and t-test to identify the compositions with significant changes. Pharmacodynamics experiment was used to investigate the protective effect of crude and fried Chrysanthemi Flos on CCl_4-induced acute liver injury in mice. According to mass spectrometry data, there were 28 chemical compositions in crude and fried Chrysanthemi Flos, mainly including flavonoids and organic acids. 13 compositions such as luteolin, apigenin and luteolin glycoside were increased significantly after frying, while 7 compositions such as chlorogenic acid, luteolin-7-O-glucuronide and apigenin-7-O-glucuronide were decreased significantly after frying. Through principal component analysis, crude and fried Chrysanthemi Flos products were divided into two categories, indicating that there were internal differences in quality. The results of liver injury protection experiment in mice showed that the AST, ALT and MDA contents were significantly decreased and SOD level was increased in mice with liver injury in both the high and medium dose groups. Histopathological examination showed that crude and fried Chrysanthemi Flos can protect the liver by reducing inflammatory cell infiltration, reducing steatosis, and repairing damaged liver cells. The results of this study showed that the chemical compositions had obvious changes after frying, and both crude and fried Chrysanthemis Flos had protective effects on CCl_4-induced acute liver injury in mice. In addition, in the range of high, medium and low doses, the liver protection effect of crude and fried Chrysanthemi Flos increased with the increase of dose. The experiment results provided reference for the mechanism of fried Chrysanthemi Flos and clinical selection of processed products.

Mechanism of processing-compatibility of ginger in treating cold asthma rat by gas chromatography-mass spectrometry based on metabolomics / 中草药

Objective: To investigate the effects of processing and compatibility of ginger for the treatment of cold asthma rats at the metabolomics level by gas chromatography-mass spectrometry (GC-MS). Methods: The rats of cold asthma were established by ovalbumin (OVA) + ice water bath. The rats divided randomly into the control group, model group, Linggan Wuwei (fresh/dry/stir- frying) Jiangxin Decoction group and the positive drug Guilong Kechuanning group. The pathological changes of lung tissue were observed by HE staining; The inflammatory cell count in BALF and the content of IgE, IL-4 and IFN-γ in serum were determined. GC-MS was used to conduct the non-targeted metabolomics study to search the serum and urine related differential metabolites in rats with cold asthma, and MetaboAnalyst was used to construct related metabolic pathways. Results: The results showed that Linggan Wuwei (fresh/dry/stir-frying) Jiangxin Decoction improved the pathological changes of rat lung tissue, significantly reduced the BALF inflammatory cell count in BALF and IgE and IL-4 levels in serum, and increased IFN-γ levels. Compared with the control group, 37 differential metabolites (15 in serum and 22 in urine) were screened in cold asthma rats. And seven metabolic pathways involving energy metabolism, oxidative stress may be associated with cold asthma by Metaboanalysis pathway analysis. The overall metabolic profile of the cold asthma rats with the intervention of Linggan Wuwei (fresh/dry/stir-frying) Jiangxin Decoction tended to normal levels. The effect of Linggan Wuwei (dry) Jiangxin Decoction on cold asthma was better than Linggan Wuwei (fresh/stir-frying) Jiangxin Decoction. Conclusion: It is more reasonable to process ginger into dried ginger in Linggan Wuwei Jiangxin Decoction against cold asthma. Ginger processing-compatibility may play a therapeutic role in cold asthma rats by regulating energy metabolism and oxidative stress.

Overexpression of YOD1 Promotes the Migration of Human Oral Keratinocytes by Enhancing TGF-β3 Signaling / 生物医学与环境科学（英文）

<p><b>OBJECTIVE</b>To investigate the effects of YOD1 overexpression on the proliferation and migration of human oral keratinocytes (HOKs), and to clarify whether the mechanisms involve transforming growth factor-β (TGF-β) signaling.</p><p><b>METHODS</b>HOKs were transfected with the plasmid pEGFP-N3-YOD1 containing YOD1. The mRNA levels of YOD1 and TGF-β were determined by qPCR. The protein expressions of YOD1, TGF-β, Smad2/3, Smad4, and phospho-Smad2/3 were determined by western blotting. Cell proliferation and migration were evaluated by Cell Counting Kit-8 assay and wound healing assay, respectively.</p><p><b>RESULTS</b>The mRNA and protein levels of YOD1 were higher in HOKs transfected with YOD1. YOD1 overexpression significantly enhanced the migration of HOKs. The mRNA and protein levels of TGF-β3 were increased by YOD1 overexpression. HOKs transfected with YOD1 exhibited increased phospho-Smad2/3 levels.</p><p><b>CONCLUSION</b>YOD1 overexpression enhances cell migration by promoting TGF-β3 signaling which may play an important role in lip and palate formation. YOD1 mutation may contribute to aberrant TGF-β3 signaling associated with decreased cell migration resulting in NSCLP.</p>

Evaluation of the New Automatic Mycob.T Stainer and Scanner for Detecting Acid-fast Bacilli in China / 生物医学与环境科学（英文）

<p><b>OBJECTIVE</b>To validate the performance of Mycob. T Stainer and Scanner (MTSS) for detecting acid-fast bacilli (AFB).</p><p><b>METHODS</b>A total of 3,816 sputum samples from 1,515 tuberculosis (TB) suspects were tested at the Anhui Provincial Chest Hospital and the Linyi People's Hospital from April-August, 2016. Each specimen was placed on two smear slides. One slide was stained by the ziehl-neelsen (ZN) method to be read by conventional microscopy (CM). The other slide was stained and scanned by MTSS. All specimens were decontaminated with 4% NaOH, and then inoculated into solid culture. The performance of MTSS was assessed.</p><p><b>RESULTS</b>MTSS produced higher average positivity rate (27.96%) as compared with the CM (26.83%). The overall sensitivity and specificity of MTSS were 78.9% and 93.9%, respectively. The sensitivity and specificity of CM was 77.4% and 95.0%, respectively.</p><p><b>CONCLUSION</b>MTSS exhibited a favorable performance in the detection of AFB. It may be an alternative to CM for screening TB.</p>

Study on monogalactosylmonoacylglycerol in marine algae (Sargassum fusiforme) / 中草药

Objective To indentify monogalactosylmonoacylglycerol (MGMG) and analyze the chemical characteristics of sn-1 and sn-2 type isomers in Marine TCM Sargassum fusiforme. Methods The MGMG compounds were isolated by multiple chromatography methods and their structures were determined by spectroscopic methods such as NMR and HRESI-MS. The interconversion and chromatography-mass spectrometry feature of MGMG positional isomers were analyzed through HPLC and HPLC-ESI-MS/MS. Results Five MGMGs were isolated from Sargassum fusiforme, and the fatty acyl compositions were stearidonoyl, linolenoyl, arachidoyl, linoleyl, and oleyl. The sn-1 and sn-2 type of MGMG were unstable. The interconversion tended to be sn-1 type rapidly, and kept balanced content at 85:15. The relative retention time of sn-2 type was less than sn-1 type on C18 reverse phase chromatography. The abundant fragment ions of MS/MS were significantly differences. The base peak was [M+Na-Gal]+ (100%), and the peak intensity of [M+Na-RCOOH]+ was always more than 50% from sn-2 type while less than 20% from sn-1 type. Conclusion Five MGMGs were isolated from brown algae for the first time. This was the first report about the interconversion and chromatography-mass spectrometry feature of sn-1 and sn-2 type. It can use to determine the fatty acyl attachment in each MGMG.

Qualitative and quantitative analysis of major constituents of raw and processed Arctii Fructus by UHPLC-UV-Q-TOF-MS/MS / 药学学报

In this study, we developed a qualitative analytical method based on liquid chromatography coupled with quadrupole time-of-flight tandem mass spectrometry (UHPLC-Q-TOF-MS/MS) for identification of multi-constituents of raw Fructus Arctii (RFA) and processed Fructus Arctii (PFA). We established a UHPLC-UV analytical method for simultaneously determining 6 major compounds in Fructus Arctii. UHPLC- Q-TOF-MS/MS qualitative analysis was performed under negative and positive ion modes and a total of 23 chemical compounds were identified. The analysis data were subjected to a principle component analysis with a t-test. Ten peaks were found to be the main difference (P<0.05) between RFA and PFA. HPLC-UV quantitative method result showed the contents of 6 constituents were different between RFA and PFA. The results indicated that there was less arctiin, chlorogenic acid, isochlorogenic acid A in PFA than in RFA. However, there were higher levels of arctigenin, isochlorogenic acid B, isochlorogenic acid C in the PFA than RFA, which may be the main reason for different clinical efficacy of RFA and PFA.

Diagnosis and Treatment Strategy for Gastric Mucosal Dysplasia / 胃肠病学

Different diagnostic criteria are existed nowadays in grading the dysplasia of gastric mucosa in clinical practice. Novel endoscopic techniques and molecular markers could facilitate the pathologic grading of dysplasia. As to the treatment strategy,it is debatable whether to choose endoscopic dissection or conservative follow-up. Here,we reviewed the diagnostic grading and therapeutic options with regard to the dysplasia of gastric mucosa.