Significance of serum hepcidin in assessment of liver inflammation activity among patients with chronic hepatitis B / 预防医学

Objective@#To investigate the value of serum hepcidin in assessment of liver inflammation activity among patients with chronic hepatitis B ( CHB ), so as to provide insights into the assessment of liver inflammation activity among CHB patients.@*Methods@#A total of 79 CHB patients who were admitted to the Affiliated Hospital of Hangzhou Normal University were selected as the experimental group, while 40 healthy volunteers were randomly sampled as controls. Subjects'demographic data, liver function tests and iron metabolism parameters were collected from medical records, and serum hepcidin was measured using enzyme-linked immunosorbent assay ( ELISA ). In addition, ultrasound-guided liver biopsy was performed in CHB patients, and mild and moderate-to-severe CHB were classified according to liver inflammation activity and degree of liver fibrosis. Serum hepcidin levels were compared between the experimental and control groups and between patients with mild and moderate-to-severe CHB. The value of serum hepcidin in assessment of liver inflammation activity was examined among CHB patients using the receiver operating characteristic ( ROC ) curve analysis.@*Results@#Subjects in the experimental group included 54 men ( 68.35% ) and had a mean age of ( 39.06±10.67 ) years, while the controls included 24 men (60.00%) and had a mean age of ( 42.43±11.44 ) years. Lower hepcidin levels were measured in the experimental group than in the control group [( 11.70±5.64 ) vs. ( 17.82±3.63 ) μg/L; P<0.05 ]. There were 54 patients with mild CHB ( 68.35% ) and 25 cases with moderate-to-severe CHB ( 31.65% ), and lower hepcidin levels were detected in patients with moderate-to-severe CHB than in those with mild CHB [ ( 6.92±2.21 ) vs. ( 13.95±5.36 ) μg/L; P<0.05 ]. The area under the ROC curve, optimal cut-off, sensitivity and specificity of serum hepcidin were 0.903 ( P<0.05 ), 10.365 μg/L, 100.0% and 72.2% for assessment of moderate-to-severe CHB, respectively.@*Conclusion@#Serum hepcidin is feasible to evaluate the liver inflammatory activity among patients with CHB.

Analysis of hemagglutinin-neuraminidase gene characteristics of human parainfluenza virus type 3 among children with acute respiratory tract infection in Qingdao city / 中华预防医学杂志

The purpose was to discuss the infection status of human parainfluenza virus type 3 (HPIV-3) in children with acute respiratory tract infection(ARTI) in Qingdao, Shandong province, and to analyze the gene characteristics of HPIV-3 hemagglutinin-neuraminidase protein (HN). This study was a cross-sectional study. A total of 1 674 throat swab samples were collected randomly from children with ARTI, in the three hospitals (Qingdao Women and Children's Hospital, West Coast Branch of Affiliated Hospital of Qingdao University, Laoshan Branch of Affiliated Hospital of Qingdao University) from January 2018 to December 2019. Multiplex real-time fluorescence RT-PCR was performed to screen HPIV-3 positive specimens. For HPIV-3 positive specimens, nested PCR was used to amplify the full-length HN gene of HPIV-3. The HN gene was sequenced and compared with the representative strains of HPIV-3 in GenBank, and the phylogenetic tree was established. As results, this study collected 1 674 samples, in which there were 90 HPIV-3 positive samples showed and the detection rate was 5.37%. Among positive specimens, the number of samples from children under 6 years old was 88, accounting for 97.78%. HPIV-3 positive cases were mainly distributed in spring and summer. The full-length sequences of 44 HPIV-3 HN genes were obtained by nested PCR method. Sequence alignment and evolutionary analysis showed that the HPIV-3HN gene belonged to the C3a and C3b branches of C3 genotype, with 30 strains of subtype C3a and 14 strains of subtype C3b. The nucleotide and amino acid homology of the amplified 44 strains of the HPIV-3 HN gene in Qingdao were 97.0%-100.0% and 98.5%-100.0%, respectively. In conclusion, from 2018 to 2019, the C3a and C3b branches of HPIV-3 C3 genotype were circulating prevalent in Qingdao, Shandong province. HN gene variation rate was low, but showed certain regional characteristics in evolution.

Quantitative analysis of immune responses to hepatitis B vaccination in children in Hangzhou and discussion on age of booster immunization / 中华实用儿科临床杂志

Objective:To investigate the appropriate age for booster doses of hepatitis B vaccine in children aged 0-14.Methods:Retrospective study.A total of 3 118 children aged 0-14 years who underwent quantitative serological marker testing for hepatitis B virus at the Affiliated Hospital of Hangzhou Normal University from January 2015 to October 2021 were recruited in this analysis.There were 1 702 males and 1 416 females, with a male to female ratio of 1.20∶1.00.Children were divided into 15 groups according to their age, and the classifying interval was 1 year.The hepatitis B virus surface antibody (Anti-HBs) titer was quantified by chemiluminescent microparticle immunoassay.The Anti-HBs positivity rates and hepatitis B immune response among groups of different sexes and age were compared by the chi- square test and rank- sum test, respectively. Results:A total of 3 118 children were investigated.The titer and effective response rate of Anti-HBs decreased gradually with age.The difference in the titer and effective response rate of Anti-HBs was statistically significant among groups of different age (all P<0.01), but not significant between males and females (all P>0.05). The median titer of Anti-HBs in children aged above 3 years was 58.49 IU/L(0-1 001.00 IU/L). About 59.1% (1 477/2 497 cases) of children aged 3 years and above had no immune response or low immune response (i.e., the titer of Anti-HBs was below 100 IU/L). Conclusions:The immune protective effect of the hepatitis B vaccine decreases year by year in children who have received the standardized vaccine, and the vaccine has poor protective effect on most children aged 3 years and above.Therefore, booster dose vaccination for preventing hepatitis B is necessary for children aged 3 and above.

Cortical 5-hydroxytryptamine receptor 3A (Htr3a) positive inhibitory neurons: diversity in type and function / 生理学报

Cortical GABAergic inhibitory neurons are composed of three major classes, each expressing parvalbumin (PV), somatostatin (SOM) and 5-hydroxytryptamine receptor 3A (Htr3a), respectively. Htr3a

Absence of BAX differentially affects astrocyte density in the mouse cortex and hippocampus / 生理学报

Astrocytes are a heterogenous group of macroglia present in all regions of the brain and play critical roles in many aspects of brain development, function and disease. Previous studies suggest that the B-cell lymphoma-2 associated X protein (BAX)-dependent apoptosis plays essential roles in regulating neuronal number and achieving optimal excitation/inhibition ratio. The aim of the present paper was to study whether BAX regulates astrocyte distribution in a region-specific manner. Immunofluorescence staining of SOX9 was used to analyze and compare astrocyte density in primary somatosensory cortex, motor cortex, retrosplenial cortex and hippocampus in heterozygous and homozygous BAX knockout mice at age of six weeks when cortical development has finished and glia development has reached a relatively steady state. The results showed that astrocyte density varied significantly among different cortical subdivisions and between cortex and hippocampus. In contrast to the significant increase in GABAergic interneurons, the overall and region-specific astrocyte density remained unchanged in the cortex when BAX was absent. Interestingly, a significant reduction of astrocyte density was observed in the hippocampus of BAX knockout mice. These data suggest that BAX differentially regulates neurons and astrocytes in cortex as well as astrocytes in different brain regions during development. This study provided important information about the regional heterogeneity of astrocyte distribution and the potential contribution of BAX gene during development.

Analysis of clinical characteristics and blood purification effect of mushroom poisoning in children in Hunan Province / 中国小儿急救医学

Objective:To analyze the epidemiological characteristics, clinical characteristics and blood purification effect of mushroom poisoning in children.Methods:A retrospective study was conducted on 51 children with acute mushroom poisoning admitted to Hunan Children′s Hospital from 2002 to 2020.The epidemiological and clinical characteristics were analyzed, and the prognosis of children with different incubation periods was analyzed and compared.Among them, 36 critically ill children were treated with blood purification.Results:The age distribution was 66(43, 115)months.Mushroom poisoning had obvious seasonal and spatial aggregation.The first symptom was mainly manifested by digestive tract, which was manifested as vomiting, abdominal pain and diarrhea, accounting for 94.1% patients(48/51). The gastrointestinal tract type accounted for 45.1%(23/51) of the clinical types and the multi-organ damage type accounted for 51.0% patients(26/51). The length of hospital stay was 6(3, 11)days.Among them, early onset accounted for 45.1% patients(23/51), late onset accounted for 54.9% patients(28/51). Early onset hospitalization was shorter, about 4(2, 7)days, and fewer organs 1(0, 3) were damaged.The length of hospital stay of late onset was 8(3, 12)days, and the number of damaged organs was 4(2, 4). There was a statistically significant difference( P<0.05). Late onset patients had more severe organ function damage, including liver function, coagulation function, renal function, myocardial enzyme, and there was no significant difference in the final outcome between two groups.In 36 children who were given blood purification treatment, alanine aminotransferase, aspartate aminotransferase, prothrombin time, international normalized ratio, blood urea nitrogen, and lactate dehydrogenase were significantly improved, with statistically significant differences( P<0.05). Conclusion:Mushroom poisoning has obvious seasonal and geographical distribution characteristics; the first manifestation is mainly gastrointestinal symptoms; the clinical types are more common in gastrointestinal and multiple organ damage types.Children with early onset have shorter hospital stays and fewer complications than later onset.Blood purification treatment can significantly improve liver function, kidney function and blood coagulation function in children with toadstool poisoning.

Analysis and Evaluation of Mineral Elements in Gastrodia elata with Different Specifications and Grades from Diverse Producing Areas / 中国实验方剂学杂志

Objective:To study the distribution characteristics of mineral elements in <italic>Gastrodia elata </italic>samples<italic> </italic>with different grades and specifications （variants） from diverse producing areas and their classification and identification evidences. Method:Fourteen mineral elements in 31 batches of <italic>Gastrodia elata</italic> samples of different grades and specifications （variants） from diverse producing areas were determined by atomic absorption spectrophotometry， Mo-Sb colorimetry， and curcumin colorimetry， and then subjected to correlation analysis （CA）， discriminant analysis （DA）， and principal component analysis （PCA）. Result:The content of K， N， and P in <italic>G. elata</italic> was the highest， enabling them to serve as the nutritional limiting factors affecting its growth. The <italic>G. elata</italic> samples could be identified by the variation trend of elements （K>N>P>Mg>Ca>Fe>B>Zn>Mn>Cu>Ni>Cr>Pb>Cd）. The comparison of <italic>G. elata</italic> samples from multiple producing areas showed that <italic>G. elata</italic> from Zhaotong has the highest P， Fe， and Cd content， that from Lijiang the highest K content， that form Luotian the highest Zn and Cr content， and that from Jinzhai the highest Cu and Pb content. The content of Mg， B， Pb， and Cr in <italic>G. elata</italic> f. <italic>elata</italic> was higher than that in <italic>G. elata </italic>f. <italic>glauca</italic>. It was found that the content of P， Cu， and Cd in commercially available <italic>G. elata </italic>products gradually increased with the decrease in the commercial grade， while that of Mg， Fe， B， and Ni mostly decreased. As revealed by CA， Fe was positively correlated with Mg， Cr， and B. The producing areas of <italic>G. elata</italic> samples could be effectively identified by DA with Cd， Pb， Cr， Cu， B， and Ni as the main variables， and the accuracy reached up to 85.71%. According to the PCA of mineral elements in <italic>G. elata</italic> f. <italic>glauca</italic> from Zhaotong， Yunnan Province， Fe， Cr， Mg， Cd， P， Mn， B， Pb， and Cu exerted a greater influence on <italic>G. elata</italic>. Conclusion:The determination of mineral elements in <italic>G. elata</italic> samples contributes to identifying their authenticity and origin due to the easy operation， accurate results， and good stability.

Analysis on application law of dampness-removing traditional Chinese medicines in treatment of coronavirus disease 2019 / 中草药·英文版

Objective: Coronavirus Disease 2019 (COVID-19) has been diagnosed as an epidemic disease characterized by cold and dampness pathogens in TCM clinic. Due to many Chinese medicines with different functions were used in the treatment of COVID-19, it is very important to find the law of application of damp-removing traditional Chinese medicine with high frequency application, with view to providing a reference for the use and research of Chinese medicine to further control the pandemic. Methods: The publicly released diagnosis and treatment programs issued by the National Health Commission and Health Commission of provinces, autonomous regions and municipalities, and Chinese herbs prescription information in these were collected, a database was established, and Excel and Graphpad 8.0 software were used to analyze the frequency of use of various Chinese medicines, the frequency and property characters including five flavors (bitter, pungent, sweet, sour, and salty) and four natures (warm, hot, cool, and cold) and channel tropisms of Chinese medicine for removing dampness. Results: A total of 137 prescriptions of Chinese medicine for treating COVID-19 were collected, including 178 TCMs showing functions of resolving phlegm, relieving cough and asthma, resolving dampness, clearing damp and inducing dieresis, clearing heat, tonifying deficiency, and relieving exterior syndrome, in which the TCMs with the first four functions that we called the dampness-removing TCMs, accounted for 35.78%. Also a number of TCMs in the rest functions showed removing-dampness. The first four functions were divided into subfunctions including aromatic resolving dampness, clearing heat and drying dampness, drying dampness and tonifying spleen qi, drying dampness and removing phlegm, inducing diuresis and relieving swelling, inducing diuresis and relieving exterior syndrome. Among them, the most frequently used TCMs was Ephedrae Herba, followed by Citri Reticulatae Pericarpium, Pogostemonis Herba, Pinelliae Rhizoma, Poria, Scutellariae Radix, and Atractylodis Rhizoma. The property character analysis in the dampness-removing TCMs showed that bitter and pungent were largely present and sour and astringent were absent, warm and hot were dominant; And the lung, spleen, stomach, large intestine, bladder were main channel tropisms. Conclusion: Dampness-removing TCMs are the first important type of traditional Chinese medicine to be considered in the treatment of COVID-19 in Chinese medicine. The application of dampness-removing TCMs in the treatment of COVID-19 needs to be combined with its application law. This study may provide meaningful and useful information on further research to investigate the effective compounds from the dampness-removing Chinese medicine with high frequency application, and also provide a reference for the clinical treatment of COVID-19 accurately against dampness evil with dampness-removing traditional Chinese medicines.

Investigating Clinical Efficacy and Mechanism of Qingfei Paidu Decoction for Treatment of COVID-19 Based on Integrative Pharmacology / 中国实验方剂学杂志

Objective:Potential targets and pathways of Qingfei Paidu decoction（QFPD）for treating coronavirus disease-2019（COVID-19） were analyzed based on the integrative pharmacology，the efficacy and material basis was predicted.This study provide a reference for the development and clinical application of QFPD. Method:Based on the integrative pharmacology of traditional Chinese medicine（TCMIP V2.0），the key targets and pathways of the intervention of QFPD on COVID-19 were enriched，the interaction network of "formula-herb-disease-targets-pathways" was constructed to explored the molecular mechanism of QFPD for the treatment of COVID-19. Result:The research results show that key-targets such as cell tumor antigen p53（tp53），protein kinase B1（Akt1），Nuclear factor nuclear transcription factor-κB（NF-κB）p105 subunit（NFKB1），nuclear factor p65 subunit（RELA），human NF-κB inhibited protein α（NFKBIA），ect.Closely associated with lung damage.The pathways such as interleukin signaling，adrenoceptors，7 members of the family of c-type lectin domains A（CLEC7A）/inflammasome pathway，phosphoinositide-3-kinase（PI3K）/protein kinase B（Akt）inflammatory signaling pathway，tp53 regulates transcription of DNA repair ect. may be the key pathways related with QFPD's effect on the treatment of COVID-19 accompany with lung injury， fever， cough and other symptoms.The results show that QFPD has many clinical effects， such as anti-inflammatory， anti-virus， strengthening immunity， inhibit the development of pulmonary fibrosis， protecting heart and lungs， treating asthma， regulating gastrointestinal tract， etc.In addition， there is a good synergism between the original prescription and the combined prescription， and each original prescription has its own emphasiscan prevention and treatment of COVID-19. Conclusion:QFPD plays a role in balancing immunity and eliminating inflammation，and it can treat COVID-19 by multi-pathway，multi-channel，multi-target and multi-link.This study also provides a new idea for the research of prevention and treatment of modern infectious diseases by use the traditional Chinese medicine.

Establishment of HPLC fingerprint and comparison of active ingredients between varieties of chrysanthemum in Hubei province / 中国中药杂志

In this paper,the fingerprint of different varieties of chrysanthemum were established with " Similarity Evaluation System for Chromatographic Fingerprint of Chinese Materia Medica" and the content of chlorogenic acid,galuteolin and 3,5-O-dicaffeoylquinic acid in 29 batches of different varieties of chrysanthemum in Futianhe town,Huangtugang town and Wuhan city were compared. At the same time,similarity evaluation and common peak clustering analysis were carried out. There were 11 common peaks in the fingerprints of 29 batches of different varieties of chrysanthemum,and the similarity ranged from 0. 802 to 0. 975. Hangju and Gongju were divided into one group by cluster analysis,and Huangju into another category. The established fingerprint method provides a basis for the identification of chrysanthemum cultivars. The content of 29 batches of chlorogenic acid was between 4. 092 and 11. 723 mg·g-1,luteolin was between 1. 010 and 11. 713 mg·g-1,and 3,5-O-dicaffeoylquinic acid was between 8. 828 and 33. 435 mg·g-1,both reach the pharmacopoeia standard,but the effective components of different varieties of chrysanthemum were quite different. Based on the contents of three active ingredients and the diversity of fingerprint peaks,the quality of the characteristic germplasm resource of local Fubaijuin Macheng is superior,and the protection of local characteristic germplasm resource should be strengthened in production.

Effective components of traditional Chinese medicine for regulating TGF-Beta1/Smads signaling pathway in hepatic fibrosis / 中国中药杂志

Hepatic fibrosis is a liver damage healing response affected by a variety of factors; its formation is associated with multiple cytokines and a variety of signaling pathways. Transforming growth factor beta1( TGF-β1) is one of the strongest fibrosis cytokines known,and involves almost all the key links in hepatic fibrosis. TGF-β1/Smads signal pathway is the most classical pathway for TGF-β1 to play its role in promoting fibrosis as well as one of the most important signaling pathways of hepatic fibrosis formation. Studies for the signal pathway have made a series of scientific research achievements in recently years. Traditional Chinese medicine has the advantages of " multiple ingredients,multiple targets and less side effects",and is widely used in the clinical treatment of hepatic fibrosis.Effective components of traditional Chinese medicine are monomer compounds,which are extracted and purified from traditional Chinese medicine. Nowadays,the molecular biology studies of effective traditional Chinese medicine have become a hotspot. Modern advanced technology and methods can be used to directly clarify the targets and the signaling pathways,reveal the mechanism of traditional Chinese medicine in treating diseases,and promote the modernization and international development of traditional Chinese medicine industry. This review summarized the structure,function and application of TGF-β1/Smads signaling pathway in the progress of anti-hepatic fibrosis,and analyzed the action mode and possible mechanism of various effective components of traditional Chinese medicine in regulating TGF-β1/Smads signaling pathway and intervening the treatment of hepatic fibrosis in the past five years,so as to put forward new ideas for innovating new targeted traditional Chinese medicine for hepatic fibrosis.

Clinical effect of feeding with calorie-enriched formula in children with ventricular septal defect and severe pneumonia / 中国当代儿科杂志

OBJECTIVE@#To study the effect of different energy feeding patterns on the nutritional status, clinical course, and outcome of children with congenital heart disease (CHD) and severe pneumonia.@*METHODS@#A total of 43 malnourished infants, aged 0.05). At discharge and 1 and 3 months after surgery, the control group had significantly higher degree of malnutrition and level of nutritional risk than the observation group (P<0.05). The analysis of variance with repeated measures showed significant differences in body weight, upper arm circumference, weight-for-age Z-score, height-for-age Z-score, weight-for-height Z-score, and albumin level at different time points and between different groups, and there was an interaction between group factors and time factors (P<0.05). Compared with the control group, the observation group had a significantly lower average daily intake of fluid, a significantly higher average daily intake of energy, and a significantly lower incidence rate of insufficient feeding during hospitalization (P<0.05). Compared with the control group, the observation group had significantly shorter length of hospital stay, duration of mechanical ventilation, and duration of postoperative pyrexia, as well as significantly lower hospital costs (P<0.05). No significant adverse reactions were observed in either group.@*CONCLUSIONS@#An appropriate increase in postoperative energy supply for children with CHD can improve the status of malnutrition and clinical outcome.

Cloning and Sequence Analysis of Cellulose Synthase-like Gene from Ampelopsis megalophylla / 中国实验方剂学杂志

Objective:To clone cellulose synthase-like(Csl)gene from ethnic medicinal plant Ampelopsis megalophylla,and analyze its sequence by bioinformatics. Method:Specific primers were designed for AmCsl gene sequences obtained from A. megalophylla transcriptome sequencing data. The full-length cDNA of AmCsl gene was amplified by PCR using cDNA of young leaves as template,and TA clone and sequencing was performed. The sequence was analyzed by bioinformatics. Result:The full length cDNA was 1 438 bp,containing a 561 bp open reading frame(ORF),and encoding 186 amino acids,the molecular formula of protein was C1011H1547N233O257S10,the theoretical relative molecular weight was 22.40 kDa,the theory isoelectric point(PI)was 7.59,and the aliphatic index(AI)was 116.88.There was a transmembrane region and no signal peptide,which may be located in the endoplasmic reticulum,the average hydrophobic coefficient was 0.670,and the instability index was 42.56.It belonged to a hydrophobic unstable protein. The conserved domain contained a cellulose synthase,and the secondary structure mainly was dominated by α-helix. Amino acid sequence alignment and phylogenetic tree analysis showed that AmCsl had a high homology with Vitis vinifera. Conclusion:The full length of AmCsl gene was obtained for preliminary bioinformatics analysis,which laid a necessary foundation for further study on the accumulation of polysaccharides and the regulation of biosynthesis.

Based on traditional Chinese medicine inheritance support system to analyze the regularity of umbilicus application to treat ascites due to cirrhosis / 中国中药杂志

Umbilicus application to treat ascites caused by cirrhosis is a simple and effective characteristic therapy. This article analyzed the regularity of application traditional Chinese medicine (TCM) herbs on umbilicus to treat ascites caused by cirrhosis through TCM inherited auxiliary system. This study chose academic literatures related to TCM dressing umbilicus to treat ascites caused by cirrhosis in CNKI database, VIP database, Wanfang database over the past 20 years as the data source, and established database to analyze the core drugs and their channel tropism, property and flavor, compatibility law, and core composition,by means of frequency statistics, and association rules (Apriori method, complicated system entropy clustering). Finally, 92 prescription to treat ascites caused by cirrhosiss were screened out. These prescription includes 109 traditional Chinese medicines. And the analysis showed that there are 14 drugs with usage frequency of 10 and more than 10, 19 common drug pairs, 12 core drug combination. The drugs with high usage frequency include Kansui Radix, Borneolum Syntheticum, Pharbitidis Semen, Rhei Radix et Rhizoma, Moschus, Euphorbiae Pekinensis Radix, Natrii Sulfas, Cinnamomi Cortex, Genkwa Flos, Phytolaccae Radix, Arecae Semen. And the channel which are mostly invoivet includ lung meridian, spleen meridian and kidney meridian; while the property and flavor of the herbs used have the properties of cold and acrid; the common drug pairs include Pharbitidis Semen-Kansui Radix, Borneolum Syntheticum-Kansui Radix, Kansui Radix-Euphorbiae Pekinensis Radix, Kansui Radix-Moschus, Rhei Radix et Rhizome-Kansui Radix, Kansui Radix-Genkwa Flos, Borneolum Syntheticum-Pharbitidis Semen, Borneolum Syntheticum-Pharbitidis Semen-Kansui Radix, Kansui Radix-Arecae Semen; herbs with the function of expelling water and purgation used as main conponents, and resuscitation, promoting the circulation of Qi, and increaseing Yang used as auxilizy conponents.

Effect of overexpression of retinoic acid receptor α on epithelial -to -mesenchymal transition induced by hypoxia in renal tubular epithelial cells / 中华实用儿科临床杂志

Objective To explore the effect of overexpression of retinoic acid receptor α(RARα)on epithelial-to-mesenchymal transition(EMT)induced by hypoxia in renal tubular epithelial cells(NRK-52E).Methods The RARα lentivirus vector and negative control lentivirus vector were synthetised.The NRK-52E cells were divided into 4 groups:the normal control group,the hypoxia model group,the transfection group and the negative control group.Puro-mycin(2 mg/L)was added in transfection group and negative control group for screening after gene interference for 72 h.Then the 2 groups were subjected to hypoxia/reoxygenation,but the normal control group had no treatment. The change of cellular morphology was observed by using light microscope;the mRNA and protein expressions of RARα, E-cadherin,α -smooth muscle actin(α-SMA)in NRK-52E cells were detected by adopting reverse transcription-polymerase chain reaction(RT-PCR)and Western blot after hypoxia for 48 h.Results (1)Light microscope re-vealed that cells in both hypoxia model group and negative control group cells became atrophic and elongated,which were consistent with the morphology of myofibroblasts.But cells in transfection group cells were cubic,forming an epi-thelial monolayer.(2)Compared with the normal control group,the mRNA and protein expressions of RARα and E-cadherin in hypoxia model group were dramatically reduced(mRNA:0.58 ± 0.12 vs.1.00 ± 0.00,0.11 ± 0.00 vs. 1.00 ± 0.00,t= -0.63,767.30,all P<0.05;protein:0.63 ± 0.12 vs.1.62 ± 0.16,0.44 ± 0.22 vs.1.27 ± 0.08,t=8.61,6.19,all P<0.05),but the mRNA and protein expressions of α-SMA were higher(3.47 ± 0.83 vs.1.00 ± 0.00,1.39 ± 0.16 vs.0.64 ± 0.10,t= -5.01,-6.91,all P<0.05).(3)The mRNA and protein expressions of RARα and E-cadherin in the transfection group were significantly increased,compared with hypoxia model group(mRNA:4.69 ± 1.34 vs.0.58 ± 0.12,0.23 ± 0.00 vs.0.11 ± 0.00,q=9.13,25.48,all P<0.05;protein:1.39 ± 0.19 vs. 0.63 ± 0.12,0.87 ± 0.09 vs.0.44 ± 0.22,q=7.92,4.30,all P<0.05)and negative control group(mRNA:4.69 ± 1.34 vs.0.55 ± 0.21,0.23 ± 0.00 vs.0.12 ± 0.01,q=9.20,23.35,all P<0.05;protein:1.39 ± 0.19 vs.0.65 ±0.18,0.87 ± 0.09 vs.0.39 ± 0.21,q=7.71,4.80,all P<0.05).Conversely,the mRNA and protein levels of α-SMA were obviously lower in transfection group(1.52 ± 0.34 vs.3.47 ± 0.83,4.05 ± 0.81,0.82 ± 0.13 vs.1.39 ± 0.10,1.17 ± 0.10,q=4.88,6.33,7.50,4.61,all P<0.05).The difference in mRNA and protein expressions of RARα,E-cadherin,α-SMA between the hypoxia group and the negative control group had no statistical significance (all P>0.05).Conclusion Overexpression of RARα could alleviate EMT of renal tubular epithelial cells induced by hypoxia.

Clinical study in safety of enteral nutrition in critically ill children with pancreatic hyperpancreorrhea / 中华急诊医学杂志

Objective To investigate the safety and efficacy of enteral nutrition in critically ill children with hyperpancreorrhea including hyperamylasemia and hyperlipasemia in order to provide the rationale of nutritional support for such critically ill children. Methods A total of 90 critically ill children with hyperpancreorrhea admitted in pediatric intensive care unit were enrolled for prospective study in a period from January 2014 to December 2015. The patients were randomly(random number) divided into fasting group (n=30), and in those with fasting time exceeded three days, intravenous nutrition was given; ordinary milk group (n=30) and special milk group (n=30) and in this group, those with age<1 year were given AiErShu, while those with age >1 year were given small hundred peptides in addition to the basis of routine treatment. Clinical data and biochemical findings in different groups were analyzed by X2test, t test, F test or non-parametric test to evaluate the safety and efficacy of enteral nutrition in critically ill children with hyperpancreorrhea. Results (1) There were statistically significant differences in rates of nutrition support-related symptoms such as diarrhea, electrolyte imbalance, blood glucose disorder among groups (χ2=6.975,6.074,6.300,P=0.031,0.048,0.043). (2) There were statistically significant difference in rates of serum amylase or lipase levels more than upper limit on the third day among different groups (χ2=7.081, P=0.029). There was no statistically significant difference in rates of fecal elastase-1<200 μg/g 24 hours after admission, on the 3rd day and on the 7th day among different groups (P＞0.05). There was statistically significant difference in procalcitonin on the 7th day among different groups (H=6.251,P=0.044). There was statistically significant difference in oxygenation index on the 3rd day among different groups (F=3.119, P=0.049). There was statistically significant difference in lactate on the 7th day among different groups (F=6.449,P=0.040). There was statistically significant differences in albumin on the 3rd day and on the 7th among different groups (F=5.451,P=0.006; H=24.861,P＜0.01). (3) There were statistically significant differences in PICU stay and hospital stay among different groups (F=3.222,3.891,P=0.045 ; 0.024). There was statistically significant difference in survival rate among different groups (χ2=6.240, P=0.044).Conclusions Early and right enteral nutrition was safe and effective for critically ill children with hyperpancreorrhea, and the special milk powder such asr AiReShu and small hundred peptides suitable for children with hyperpancreorrhea could effectively support nutrition for critically ill children with hyperpancreorrhea,improve the status of illness, promote disease recovery, shorten hospital stay and improve the prognosis.

The role of c-Jun amino terminal kinase pathway in the differentiation of anaerobic renal tubular epitheli-al cells / 实用医学杂志

Objective To explore the role of c-Jun N-terminal protein kinase(JNK)pathway in renal tubular epithelial cells(RTEC)transdifferentiation by detecting the expression of JNK pathway in the injury of hypoxic RTEC. Methods In vitro cultured rat RTEC were randomly divided into four groups of normal control, hypoxia,inhibitors,dimethyl sulfoxide(DMSO). The groups of hypoxia,inhibitor and DMSO were placed into a vacuum tank to establish hypoxia model. The cells were harvested 6,12 and 24 h after hypoxia started. RT-PCR and Western blot test were used to detect the mRNA expressions of alpha smooth muscle actin(α- SMA)and protein expressions of JNK,pJNK and alpha SMA,respectively,in all the groups. Results Hypoxia induced significantly increased expressions of α-SMA mRNA and proteins,and JNK and pJNK proteins as well in RTEC (all P<0.05).After addition of inhibitors,the expression of α-SMA mRNA and proteins,the protein expression of pJNK in RTEC were significantly decreased(all P < 0.05)and the expression of JNK protein was significantly increased(P < 0.05). There was no significant difference in the expressions of JNK,pJNK,α-SMA in RTECs between hypoxia group and DMSO group(all P>0.05).There was a significant positive correlation between pJNK protein and α-SMA protein expression(P < 0.01). Conclusion In hypoxic RETC injury in rats,JNK pathway may be involved in the RTEC phenotype transdifferentiation.

Treatment and prognosis of immunoglobulin G4-related hepatobiliary disease / 中华肝脏病杂志

Currently, there is no randomized controlled clinical trial of immunoglobulin (Ig) G4-related diseases in the world. Therefore, the best-known evidence-based medical treatment plan for this disorder is unavailable. The goal of IgG4-related hepatobiliary diseases treatment is to alleviate symptoms, prevent disease-related complications and fibrosis progression. A definite diagnosis is warranted before treatment. Hormonal therapy has become the basis of induction of remission in IgG4-related hepatobiliary disease. An initial prednisone dose is 30 ~ 40mg/d or 0.6 mg.kg-1.d-1 for 2 to 4 weeks, thereafter, gradually the dose is reduced within 2-3 months. Maintenance therapy with low-dose glucocorticoids hormone (prednisone 2.5 to 5.0 mg/d) is recommended for 1 to 3 years to prevent disease recurrence. In addition, immunosuppressive agents are equally effective, and in most cases, hormone combined immunosuppressive therapy may respond. Rituximab, a monoclonal antibody is a promising drug for treatment of this kind of diseases.

Analysis of miR-34a function in brain development and behavior using knockout mouse model / 生理学报

miR-34a is a conserved microRNA highly expressed in the brain. It is thought to play critical roles in regulating many aspects of brain development and function, such as neural stem cell proliferation and differentiation, neuronal migration and apoptosis, fear memory consolidation, etc. However, the assessment of its function was mainly conducted through vector-mediated overexpression and miRNA sponge or antagomir-mediated functional suppression, therefore may suffer from nonspecific off-target effects or incomplete inactivation. We thus analyzed mouse model with a targeted deletion of miR-34a which completely abolishes its expression. To our surprise, loss of miR-34a led to neither an obvious change in brain size, morphology or cortical lamination, nor impaired marker gene expression in major excitatory and inhibitory neuron types in the neocortex. In addition, miR-34a ablation did not affect fear memory formation or consolidation, as well as the anxiety or depression related behavior. However, the performance of mice in rotarod assay was significantly affected, suggesting a defect in motor activity in miR-34a deficient mice. As neocortical parvalbumin (PV) neurons are known for high level miR-34a expression, we also tested the effect of PV-Cre-mediated conditional miR-34a deletion. Similar as germline deletion, PV neuron specific miR-34a deletion did not affect cortical lamination or PV expression in the neocortex. Our studies suggest that, although miR-34a may be involved in regulating certain aspects of brain development or function, such as motor activity, it does not play a significant role in regulating brain morphogenesis, cortical lamination or neocortical neuron subtype specification, and it is also dispensable for fear memory formation, expression and consolidation.

Study on formation and changes of Dao-di herbs production origin of Gastrodia elata / 中国中药杂志

Gastrodia elata has been used in China for more than 2 000 years and it is a kind of valuable traditional Chinese medicine. The originrecords of G. elata were Mount Tai of Shandong and and Mount Song of Henan, which began in Wupu Bencao of Wei Jin Dynasties, and Tai'an and its surrounding areas had been the Do-di herbs production areas. But from the beginning of the Republic of China, G. elata origin has undergone major changes, Do-di herbs production areas moved westward to the southwest.In this paper,through literature research and field visits, we studied the formation and changes of Do-di herbs production areas of G. elata. The cultivation history and current main producing area of G. elata was also introduced. On this basis, we profoundly summarized the reasons of Do-di herbs production areas formation and changes from the nature, society, transportation, humanities and germplasm resources.Combining the ancient herbal medicine and the characteristics of modern producing areas, the planting strength of G. elata could be strengthened in the hope of providing reference for the quality evaluation and cultivation of G. elata.