Status and associated factors of mild cognitive impairment among the elderly in Shanghai community / 上海预防医学

ObjectiveTo explore the status of mild cognitive impairment （MCI） among the elderly in Shanghai communities， and to identify the factors associated with MCI. MethodsThe Montreal Cognitive Assessment-Basic （MoCA-B） was used to screen for MCI in elderly adults. Logistic regression analysis was conducted to identify the factors associated with MCI. ResultsAmong 629 participants， 226 （35.90%） were positive for MCI. Older age （OR=1.04， 95%CI： 1.01-1.07）， lower family income （average OR=2.20， 95%CI： 1.01-4.80； poor OR=2.59， 95%CI： 1.03-6.50）， hearing impairment affecting daily life （OR=1.86， 95%CI： 1.19-2.91）， and anxiety symptoms （OR=1.58， 95%CI： 1.02-2.44） were associated with the positive for MCI. Living in central urban area （OR=0.57， 95%CI： 0.37-0.89） and having higher social support （OR=0.97， 95%CI： 0.94-1.00） were protective factors for MCI. ConclusionThe current status of MCI among the elderly in Shanghai communities is not optimistic. It is important and necessary to establish the cognitive-friendly community for the elderly.

Cyasterone inhibits IL-1β-mediated apoptosis and inflammation via the NF-κB and MAPK signaling pathways in rat chondrocytes and ameliorates osteoarthritisin vivo / 中国天然药物

Osteoarthritis is a prevalent global joint disease, which is characterized by inflammatory reaction and cartilage degradation. Cyasterone, a sterone derived from the roots of Cyathula officinalis Kuan, exerts protective effect against several inflammation-related diseases. However, its effect on osteoarthritis remains unclear. The current study was designed to investigate the potential anti-osteoarthritis activity of cyasterone. Primary chondrocytes isolated from rats induced by interleukin (IL)-1β and a rat model stimulated by monosodium iodoacetate (MIA) were used for in vitro and in vivo experiments, respectively. The results of in vitro experiments showed that cyasterone apparently counteracted chondrocyte apoptosis, increased the expression of collagen II and aggrecan, and restrained the production of the inflammatory factors inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), a disintegrin and metalloproteinase with thrombospondin motifs-5 (ADAMTS-5), metalloproteinase-3 (MMP-3), and metalloproteinase-13 (MMP-13) induced by IL-1β in chondrocytes. Furthermore, cyasterone ameliorated the inflammation and degenerative progression of osteoarthritis potentially by regulating the nuclear factor kappa B (NF-κB) and mitogen-activated protein kinase (MAPK) pathways. For in vivo experiments, cyasterone significantly alleviated the inflammatory response and cartilage destruction of rats induced by monosodium iodoacetate, where dexamethasone was used as the positive control. Overall, this study laid a theoretical foundation for developing cyasterone as an effective agent for the alleviation of osteoarthritis.

Effect of Shaoyaotang on Fecal Metabolites in Rats with Ulcerative Colitis Based on Liquid Chromatography-mass Spectrometry / 中国实验方剂学杂志

ObjectiveTo investigate the effect of Shaoyaotang on fecal metabolites in rats with ulcerative colitis （UC） induced by 2，4，6-trinitrobenzenesulfonic acid （TNBS） based on liquid chromatography-mass spectrometry （LC-MS）. MethodMale SPF SD rats were randomly divided into normal group， model group and Shaoyaotang group （11.1 g·kg-1）. Except for normal group， UC rat model was induced by TNBS， and each group was given normal saline except Shaoyaotang group. All groups were treated for 7 days， and the general condition and disease activity index （DAI） were observed. Hematoxylin-eosin （HE） staining was used to observe the histopathological changes of colon， and the protein expressions of interleukin-8 （IL-8） and interleukin-22 （IL-22） in colon tissue were detected by immunohistochemistry （IHC）. Rat fecal samples were detected by LC-MS， and the data were analyzed by principal component analysis （PCA） and partial least squares discriminant analysis （PLS-DA）. Human Metabolome Database （HMDB） and Kyoto Encyclopedia of Genes and Genomes （KEGG） were searched to screen differential metabolites in combination with literature reference. Then， pathway enrichment analysis was conducted using Metabo Analyst 5.0. ResultShaoyaotang （ig） decreased the DAI of UC rats. Compared with the normal group， the model group had damaged colonic mucosa structure， submucosal inflammatory cell infiltration， increased protein expressions of IL-8 （P<0.01） and IL-22 （P<0.05） in colon tissue. Compared with the conditions in the model group， the colonic damage was alleviated in the Shaoyaotang group， and the protein expressions of IL-8 and IL-22 in colon tissue were decreased （P<0.01）. After screening， 15 differential metabolites were identified from the Shaoyaotang group， and the involved pathways mainly included biosynthesis of unsaturated fatty acids， linoleic acid metabolism， terpenoid backbone biosynthesis， porphyrin and chlorophyll metabolism， amino sugar and nucleotide sugar metabolism， pyrimidine metabolism and steroid hormone biosynthesis. ConclusionShaoyaotang has a therapeutic effect on UC， and its anti-inflammatory effect may be related to improving lipid metabolism and regulating the metabolism of cofactors and vitamins as well as the abnormal carbohydrate metabolism.

Mechanism of Shaoyaotang in Regulating Water Metabolism and Intestinal Epithelial Permeability in Ulcerative Colitis Through cAMP/PKA/CREB Signaling Pathway / 中国实验方剂学杂志

ObjectiveTo investigate the role of cyclic adenosine monophosphate （cAMP）/protein kinase A （PKA）/cAMP-response element binding protein （CREB） signaling pathway in water metabolism and intestinal epithelial permeability in ulcerative colitis （UC） and the intervention mechanism of Shaoyaotang based on the theory of large intestine governing fluids. MethodSixty male SD rats were divided into blank group， model group， mesalazine group （0.42 g·kg-1）， Shaoyaotang low-dose group （11.1 g·kg-1）， Shaoyaotang medium-dose group （22.2 g·kg-1） and Shaoyaotang high-dose group （44.4 g·kg-1）， with 10 in each group. The UC rat model of internal retention of dampness-heat was established by compound factors. The blank group and the model group were given normal saline （ig）. The mesalazine group was given mesalazine （ig）， and Shaoyaotang low-， medium- and high-dose groups were administrated with corresponding doses of Shaoyaotang （ig）. The treatment lasted for 14 days. The diarrhea score and fecal moisture content of rats in each group were observed. The contents of diamine oxidase （DAO） and D-lactic acid in plasma were detected by enzyme-linked immunosorbent assay （ELISA）. The protein expressions of aquaporin （AQP）8， AQP4， ZO-1 and Occludin in colon tissues were detected by immunohistochemistry， while those of cAMP， PKA and CREB in colon tissues were determined by Western blot. ResultCompared with the normal group， the model group had elevated diarrhea score and fecal moisten content （P<0.01）， increased contents of DAO and D-lactic acid in plasma （P<0.01） and decreased protein expressions of ZO-1， Occludin， AQP8， AQP4， cAMP， PKA and CREB in colon （P<0.01）. Compared with the conditions in the model group， the contents of DAO and D-lactic acid in plasma in each administration groups were lower （P<0.01）， while the protein expressions of ZO-1， Occludin， AQP8， AQP4， cAMP， PKA and CREB in colon were higher （P<0.01）. ConclusionShaoyaotang alleviates the diarrhea in UC， probably through activating cAMP/PKA/CREB signaling pathway， up-regulating expressions of AQPs， enhancing tight junctions in intestinal epithelium and thus improving the water metabolism in colon and the intestinal mucosal permeability.

Shaoyaotang Alleviates Ulcerative Colitis by Regulating Th17/Treg Balance Through IL-6/STAT3 Signaling Pathway / 中国实验方剂学杂志

ObjectiveTo explore the role of interleukin-6 （IL-6）/signal transducer and activator of transcription 3 （STAT3） pathway in the balance of T helper 17 （Th17）/regulatory T （Treg） cells in ulcerative colitis （UC） with internal dampness-heat accumulation syndrome and the intervention mechanism of Shaoyaotang. MethodA total of 60 SD rats were randomized into blank group （equivalent volume of normal saline）， model group （equivalent volume of normal saline）， western medicine control group （0.42 g·kg-1 mesalazine）， and low-dose （11.1 g·kg-1）， medium-dose （22.2 g·kg-1）， and high-dose （44.4 g·kg-1） Shaoyaotang groups. UC with internal dampness-heat accumulation syndrome was induced in rats with the compound method except for the blank group. The administration lasted 14 days for each group. At 24 h after the last administration， rats were killed and the spleen and colon tissues were separated. The histopathological changes of colon were observed based on hematoxylin and eosin （HE） staining and the levels of interleukin-17 （IL-17） and transforming growth factor-β1 （TGF-β1） in colon tissue were detected by immunohistochemistry （IHC）. Flow cytometry was employed to determine the levels of Th17/Treg cells in the spleen， and Western blot to measure the levels of IL-6 and STAT3 proteins in colon tissue. ResultCompared with the blank group， the model group had lesions such as congestion and erosion， low percentage of spleen Treg cells （P<0.01）， high percentage of Th17 cells （P<0.01）， and high levels of IL-6 and STAT3 proteins in colon tissue （P<0.01）. Compared with the model group， the administration groups showed alleviation of colon injury， high percentage of spleen Treg cells （P<0.05， P<0.01）， low percentage of Th17 cells （P<0.01）， and low levels of IL-6 and STAT3 proteins in colon tissue （P<0.01）. ConclusionShaoyaotang regulates the balance of Th17/Treg by inhibiting the IL-6/STAT3 pathway， thereby relieving the pathological damage of UC rats with internal dampness-heat accumulation syndrome and affecting their immune function.

Shaoyaotang and Its Modified Formulas in Treatment of Ulcerative Colitis： A Review / 中国实验方剂学杂志

Shaoyaotang is composed of Cptidis Rhizoma， Scutellariae Radix， Rhei Radix et Rhizoma， Paeoniae Radix Alba， Angelicae Sinensis Radix， Aucklandiae Radix， Arecae Semen， Cinnamomi Cortex and Glycyrrhizae Radix et Rhizoma， with the functions of clearing away heat， eliminating dampness， regulating Qi and activating blood. Thus， it is proposed as the main formula for the treatment of dampness-heat dysentery by later generations of doctors. In modern clinical application， in addition to original Shaoyaotang， its modified formulas are also used for the treatment of ulcerative colitis， and can be used in combination with other prescriptions （such as Tongxie Yaofang， Pulsatilla Soup， Shenling Baizhu San）， western medicine （such as mesalazine， sulfasalazine， Infliximab）， traditional Chinese medicine （TCM） acupuncture or moxibustion and other characteristic therapies. Clinical efficacy results indicate that Shaoyaotang and its modified formulas can significantly lower Mayo Endoscopic Score （MES）， Baron score， TCM syndrome score and other disease scores， and improve patients’ intestinal symptoms， with few side effects. Experimental pharmacological studies reveal that Shaoyaotang can inhibit tumor necrosis factor-α （TNF-α）， nuclear transcription factor-κB （NF-κB）， interleukin-1β （IL-1β） and other pro-inflammatory factors to up regulate the expression of anti-inflammatory factors such as interleukin-10 （IL-10）， thereby reducing the inflammatory response. The formula could also reduce apoptosis by regulating inflammatory signaling pathway and blocking the chain reaction， and repair abnormal immune barrier by balancing immune axis and regulating immune proteins. Additionally， it could adjust the balance of intestinal flora， promote intestinal epithelial cell regeneration and improve mucosal permeability， so as to restore the balance of intestinal environment and thus treat ulcerative colitis. Its monomers baicalin， paeoniflorin， and berberine have anti-inflammatory， antibacterial， metabolism-regulating and other effects. This paper systematically reviewed the clinical and basic research progress of Shaoyaotang in the treatment of ulcerative colitis.

The correlation between pulmonary surfactant protein B gene polymorphism and susceptibility to respiratory distress syndrome in Uyghur newborns / 中国新生儿科杂志

Objective:To study the relationship between the 1580 locus (rs1130866) gene polymorphism of pulmonary surfactant protein B (SP-B) gene and susceptibility of neonatal respiratory distress syndrome (RDS) in Uygur newborns.Methods:From June 2019 to May 2020, Uyghur premature infants admitted to the Department of Neonatology of our hospital were prospectively enrolled and assigned into RDS group and control group according to their diagnosis. The genotype and allele distribution of SP-B gene 1580 locus were examined using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) analysis technology. The genotype and allele frequency of SP-B gene 1580 locus in RDS infants among Uyghur, Mongolian and Han nationality were compared.Results:A total of 160 infants were enrolled, including 80 in the RDS group and 80 in the control group. Three genotypes (TT, TC and CC) were detected in both groups. The frequencies of the three genotypes in the RDS group were 18.8%, 53.8% and 27.4%, respectively, with T allele frequency 45.6% and C allele frequency 54.4%. The frequencies of the three genotypes in the control group were 22.5%, 52.5% and 25.0%, respectively, with T allele frequency 48.8% and C allele frequency 51.3%. No significant differences existed in genotype frequency and allele frequency distribution between the two groups ( P>0.05). The CC genotype frequency of SP-B gene 1580 locus in Uyghur was significantly different from Mongolian and Han nationality ( P<0.05). Significant difference existed in C allele frequency between Uyghur and Han nationality ( P<0.05), while no significant difference existed in allele frequency between Uyghur and Mongolian nationality ( P>0.05). Conclusions:No correlation exists between the polymorphism of SP-B gene 1580 locus (rs1130866) and RDS in Uygur premature infants. Different ethnic groups have different SP-B gene 1580 locus polymorphism.

Removal of Shield Needles from Graphene Oxide Thrombus and Preparation / 中国医疗器械杂志

Atherosclerosis is a chronic inflammatory disease commonly seen in clinical practice. It can lead to thickening of vascular intima, occlusion of lumen stenosis and thrombosis, leading to angina pectoris, hypertension, myocardial infarction and other diseases, posing a serious threat to human life and health. This study provides a method for removing shield needles from graphene oxide thrombus and its preparation. The graphene oxide shield needle mainly includes flexible rotating shaft, radial flexible rod, rotating needle, adsorption main pipe and dosing main pipe, laser measuring device, high definition camera and other structures, which has the following advantages:firstly, it achieves multi-angle rotation grinding thrombosis, precise rotation grinding, avoids vascular damage and infection; secondly, thrombolytic drugs can be applied in the process of rotary grinding and small thrombus can be adsorbed to effectively avoid secondary embolization of blood vessels; thirdly, it a coating of graphene oxide on a rotating needle, which protects against bacteria and infection. This study has practical reference value for the development of thrombotherapy and the application of graphene in the medical field.

Drug treatment of neonatal persistent pulmonary hypertension / 中国小儿急救医学

Neonatal persistent pulmonary hypertension refers to the continuous increase of pulmonary artery pressure, right heart pressure, right-to-left shunt at foramen ovale and ductus arteriosus level, severe hypoxemia and even respiratory failure after birth.At present, the drug treatments of neonatal persistent pulmonary hypertension include inhaling nitric oxide, sildenafil, milrinone, endothelin receptor antagonists bosentan, prostaglandins and their analogs.This review briefly summarized the progress on the treatment of neonatal persistent pulmonary hypertension.

Toluene diisocyanate induces inflammatory response and autophagy in human bronchial epithelial cells / 中国职业医学

OBJECTIVE: To investigate the effect of toluene diisocyanate(TDI) on the activation of autophagy and expression of inflammatory cytokines interleukin(IL)-4 and IL-6 in normal human bronchial epithelial cells(16 HBE). METHODS: i) We prepared TDI-human serum albumin(HSA) and determined the mass concentration of TDI in TDI-HSA. ii) The cells were treated with TDI-HSA and HSA at concentrations of 0.00-400.00 mg/L for 12 hours. CCK-8 assay was used to determinate the cell viability, and TDI-HSA and HSA doses were selected for subsequent experiments. iii) The cells were treated with TDI-HSA and HSA at doses of 0.00-120.00 mg/L for 12 hours, and the levels of reactive oxygen species(ROS) in the cells were detected by flow cytometry. The levels of IL-4 and IL-6 in the cell supernatant were measured by enzyme-linked immunosorbent assay. iv) The cells were treated with TDI-HSA at doses of 0.00-120.00 mg/L for 12 hours, and the autophagy activity was observed under transmission electron microscope. Western blot was utilized to detect the expression of Beclin1, microtubule-associated protein 1 light chain(LC3β) and P62. RESULTS: i) The mass concentrations of TDI in 40.00, 80.00 and 120.00 mg/L TDI-HSA groups were 0.44, 0.89 and 1.33 mg/L respectively. ii) The results of CCK-8 showed that TDI-HSA and HSA at doses below 120.00 mg/L did not affect cell viability, and 0.00-120.00 mg/L was selected as the TDI-HSA and HSA treatment doses for subsequent experiments. iii) The level of ROS in cells and the levels of IL-4 and IL-6 in the supernatant of 16 HBE cells in the TDI-HSA group at 40.00, 80.00, and 120.00 mg/L were higher than that in HSA group at the same dose(P<0.01). The level of ROS in cells and the levels of IL-4 and IL-6 in the supernatant of 16 HBE cells increased with the increase of TDI-HSA doses(P<0.01). iv) Transmission electron microscopy showed that the number of autophagic lysosomes in 16 HBE cells increased significantly, and the number of mitochondrial vacuoles increased in 40.00, 80.00, 120.00 mg/L TDI-HSA group compared with 0.00 mg/L group. With the increase of TDI-HSA dose, the relative expression of Beclin1 protein and LC3β-Ⅱ/Ⅰ ratio in 16 HBE cell supernatant increased(P<0.05), and the relative expression of P62 protein decreased(P<0.05). CONCLUSION: TDI-HSA induces increased expression of ROS and inflammatory factors and induces autophagy activation in 16 HBE cells. Autophagy may be an important factor for the development of airway inflammation in TDI-induced occupational asthma.

Brexanolone:a new drug for postpartum depression / 中国基层医药

Brexanolone,also known as 3a,5a-tetrahydroprogesterone ,is a metabolite of progesterone and an important neuroactive steroid with a wide range of biological activities.Recently,the most exciting thing is that 2019 year the FDA has approved its treatment of postpartum depression ,which is also the only drug to obtain indications for postpartum depression.It is expected to officially enter the market by the end of June 2019 year.This article reviews the research progress of its pharmacological action.

Advances in the pathogenesis of bronchopulmonary dysplasia in preterm infants / 国际儿科学杂志

Bronchopulmonary dysplasia (BPD) is the most common chronic respiratory disease in premature and low birth weight infants,characterized by alveolar and pulmonary vascular dysplasia.This article reviews the factors related to the pathogenesis of BPD,with the aim of providing new ideas for the research of pathogenesis of BPD and its prevention and treatment.Among them,immature lung development,acute lung injury,and abnormal repair after injury are the key links of BPD.Other influencing factors include oxygen poisoning,barotrauma,infection,lack of nutritional support,patent ductus arteriosus,blood transfusion,gastroesophageal reflux,pulmonary interstitial edema,abnormal coagulation function,cholestasis and so on.

Identification of serotonin 2A receptor as a novel HCV entry factor by a chemical biology strategy

Hepatitis C virus (HCV) is a leading cause of liver disease worldwide. Although several HCV protease/polymerase inhibitors were recently approved by U.S. FDA, the combination of antivirals targeting multiple processes of HCV lifecycle would optimize anti-HCV therapy and against potential drug-resistance. Viral entry is an essential target step for antiviral development, but FDA-approved HCV entry inhibitor remains exclusive. Here we identify serotonin 2A receptor (5-HTR) is a HCV entry factor amendable to therapeutic intervention by a chemical biology strategy. The silencing of 5-HTR and clinically available 5-HTR antagonist suppress cell culture-derived HCV (HCVcc) in different liver cells and primary human hepatocytes at late endocytosis process. The mechanism is related to regulate the correct plasma membrane localization of claudin 1 (CLDN1). Moreover, phenoxybenzamine (PBZ), an FDA-approved 5-HTR antagonist, inhibits all major HCV genotypes in vitro and displays synergy in combination with clinical used anti-HCV drugs. The impact of PBZ on HCV genotype 2a is documented in immune-competent humanized transgenic mice. Our results not only expand the understanding of HCV entry, but also present a promising target for the invention of HCV entry inhibitor.

Retrospective cohort study on the correlation between high value of lactic acid and risk of death in 127 patients with extensive burn during shock stage / 中华烧伤杂志

Objective@#To analyze the relationship between serum lactic acid value and risk of death in patients with extensive burn during shock stage and the related influencing factors.@*Methods@#Clinical data of 127 patients (111 males and 16 females) with extensive burn admitted to Institute of Burn Research of the First Affiliated Hospital of Army Medical University from January 2009 to December 2013 and Department of Plastic Surgery and Burns of the Affiliated Hospital of Southwest Medical University from January 2016 to December 2018, who met the admission criteria, were retrospectively analyzed. The patients aged 21 to 62 years, with total burn area more than 50% total body surface area. All patients were treated with antishock therapy after admission. (1) According to the treatment outcome, the patients were divided into survival group (n=98) and death group (n=29). The gender, age, total burn area, partial-thickness burn area, full-thickness burn area, abbreviated burn severity index (ABSI), admission time after injury, number of patients with inhalation injury, number of patients with acute renal failure, and serum lactic acid values on admission and at post admission hour (PAH) 12, 24, 36, and 48 were recorded. (2) According to the optimal positive cut-off value of serum lactic acid 48 hours after admission, the patients were divided into high lactic acid group and normal lactic acid group. Age, gender, total burn area, indexes at PAH 48 including urea nitrogen, creatinine, alanine aminotransferase (ALT), aspartate aminotransferase (AST), total serum bilirubin, alkaline phosphatase (ALP), albumin, white blood cell count, platelet count, lymphocyte count, prothrombin time (PT), hematocrit value, oxygenation index, respiratory index (RI), the alveolar-arterial oxygen partial pressure difference, mean arterial pressure (MAP) at PAH 48, the average urine volume within 48 hours after admission, the total volume of intravenous fluid infusion within 48 hours after admission, the volume of fluid infusion per kilogram of body mass within the first 24 hours after admission, the volume of fluid infusion per one percent of body surface area per kilogram of body mass within the first 24 hours after admission, the volume of urine per kilogram of body mass per hour within the first 24 hours after admission, and the percentage of hospital death were recorded. Data were processed with t test, chi-square test, and Fisher′s exact probability test. Cox regression analysis was used to screen independent risk factors affecting the prognosis of patients. Receiver operating characteristic curve (ROC) of serum lactic acid value at PAH 48 of 127 patients was drawn to predict patients′ death and determine the optimal positive cut-off value. Multivariate logistic regression analysis was used to screen independent risk factors causing increase of serum lactic acid.@*Results@#(1) There were significantly statistical differences in total burn area, full-thickness burn area, and ABSI of patients between survival group and death group (t=6.257, 4.476, 5.727, P<0.01), while other indexes between the two groups were close. (2) The serum values of lactic acid of patients in death group on admission and at PAH 12, 24, 36, and 48 were (4.00±0.28), (4.50±0.26), (4.02±0.31), (3.48±0.22), (3.40±0.19) mmol/L, respectively, which were significantly higher than those in survival group [(3.30±0.21), (3.20±0.19), (2.33±0.17), (1.85±0.18), (1.50±0.09) mmol/L, t=14.552, 29.603, 38.133, 40.648, 74.973, P<0.05 or P<0.01]. (3) Cox regression analysis showed that the serum value of lactic acid at PAH 48 was the independent risk factor affecting the prognosis of patients, with risk ratio of 1.853 and 95% confidence interval of 1.342-2.559, P<0.01. (4) The total area under ROC of serum value of lactic acid at PAH 48 to predict death of 127 patients was 0.811, with 95% confidence interval of 0.699-0.924, P<0.01. The optimal positive cut-off value of serum value of lactic acid was 1.75 mmol/L, with sensitivity of 75.0% and specificity of 79.5% for predicting death. (5) There were significantly statistical differences in total burn area, ALT, AST, ALP, PT, total serum bilirubin, total volume of intravenous fluid infusion within 48 hours after admission, volume of fluid infusion per kilogram of body mass within the first 24 hours after admission, and percentage of hospital deaths of patients between high lactic acid group (n=34) and normal lactic acid group (n=93), t=3.592, 6.797, 10.367, 2.089, 2.880, 4.517, 2.984, 4.044, χ2=58.498, P<0.05 or P<0.01, while other indexes were close between the two groups. (6) Multivariate logistic regression analysis showed that AST and total serum bilirubin were independent risk factors for increase of serum lactic acid, with odds ratios of 1.021 and 1.064 and 95% confidence intervals of 1.001-1.040 and 1.001-1.132, P<0.05.@*Conclusions@#Serum value of lactic acid at PAH 48 can independently predict the death of patients with extensive burns. Liver injury is an important risk factor causing hyperlacticemia during burn shock stage. Widespread increase of vascular permeability and large amount of fluid resuscitation are the core factors leading to aggravation of abdominal organ injury.

Brexanolone: a new drug for postpartum depression / 中国基层医药

Brexanolone, also known as 3a, 5a-tetrahydroprogesterone, is a metabolite of progesterone and an important neuroactive steroid with a wide range of biological activities.Recently, the most exciting thing is that 2019 year the FDA has approved its treatment of postpartum depression, which is also the only drug to obtain indications for postpartum depression.It is expected to officially enter the market by the end of June 2019 year.This article reviews the research progress of its pharmacological action.

Advances in the pathogenesis of bronchopulmonary dysplasia in preterm infants / 国际儿科学杂志

Bronchopulmonary dysplasia(BPD)is the most common chronic respiratory disease in premature and low birth weight infants, characterized by alveolar and pulmonary vascular dysplasia.This article reviews the factors related to the pathogenesis of BPD, with the aim of providing new ideas for the research of pathogenesis of BPD and its prevention and treatment.Among them, immature lung development, acute lung injury, and abnormal repair after injury are the key links of BPD.Other influencing factors include oxygen poisoning, barotrauma, infection, lack of nutritional support, patent ductus arteriosus, blood transfusion, gastroesophageal reflux, pulmonary interstitial edema, abnormal coagulation function, cholestasis and so on.

Research progress of cryoablation in the treatment of lung cancer / 国际肿瘤学杂志

Clinical studies have confirmed that cryoablation is a safe and effective treatment for lung cancer. Cryoablation has been clinically used in the treatment of various types of lung cancer,and has achieved good therapeutic effects. Some of the complications of cryoablation can be alleviated after symptomatic treat-ment. However,cryoablation still needs further research and exploration in clinical applications.

Lung fibrosis and changes in autophagy-related proteins in rats exposed to silica dust / 中华劳动卫生职业病杂志

Objective@#To explore the changes in the autophagy marker microtubule-associated protein 1 light chain 3 (LC3) and yeast autophagy-related gene 6 (Beclin1) in rat lungs exposed to free silica (SiO2) dust for different periods.@*Methods@#A total of 72 male specific pathogen-free Wistar rats were randomly divided into solvent control group and SiO2 model group. The SiO2 model group received one-time non-exposed intratracheal instillation of suspension of SiO2 particles to establish a model of silicosis. The solvent control group received an equal amount of saline. Six rats each were sacrificed at 1, 7, 14, 21, 28, and 60 days after model establishment. The pathological changes and fibrosis of rat lungs at different time points were evaluated by H&E staining and Masson staining, respectively. Enzyme-linked immunosorbent assay (ELISA) was used to determine the levels of transforming growth factor-β (TGF-β) , interleukin-1 (IL-1) , and tumor necrosis factor-α (TNF-α) in lung tissue homogenate. Western blot was used to determine the relative expression levels of LC3 and Beclin1 in the lung tissue.@*Results@#The results of H&E staining showed that the model group had continuous inflammation in the lung tissue from day 1 to day 60, and the inflammatory scores were significantly higher in the model group than in the control group (P<0.05) . The results of Masson staining showed that rats in the model group had a small amount of collagen fibers in the lung tissue on day 14 and a large amount of collagen fibers on day 60. The fibrosis score was significantly higher in the model group than in the control group (P<0.05) . No collagen fibrosis was observed in the lung tissue in the control group. The results of ELISA showed that the model group had significantly higher levels of IL-1, TNF-α, and TGF-β in lung tissue homogenate than the control group at each time point after exposure (P<0.05) . The results of Western blot showed that the model group had decreased expression of Beclin1 protein in the lung tissue on days 7, 14, 21, 28, and 60, which was significantly higher than that of the control group (P<0.05) . The model group also had a decreased ratio of LC3II/LC3I on days 1, 7, 14, 21, 28, and 60, which were significantly higher than that of the control group (P<0.05) .@*Conclusion@#In the rat model of silicosis induced by free SiO2 dust, the expression levels of autophagy-related proteins, LC3 and Beclin1, are correlated with different stages of silicosis. In the early stage of silicosis, the lung tissue has inflammation, substantially increased ratio of LC3II/LC3I and expression of Beclin1, and active autophagy. With the progression of silicosis, the ratio of LC3II/LC3I and expression level of Beclin1 gradually decrease and autophagy becomes weak.

Progress of respiratory syncytial virus vaccine / 国际儿科学杂志

Respiratory syncytial virus(RSV) infection is an important factor for causing illness and death in global high-risk groups,such as infants,children,and immunocompromised patients,and the elderly.As a high risk factor,there is still no safe and effective vaccine.Therefore,RSV vaccine has been regarded as one of the vaccines that needs to be developed globally by the World Health Organization(WHO).The important biological characteristics such as the structure of RSV,infection mechanism,and two important glycoproteins:fusion and attachment,active and passive immunization vaccine development,as well as some of the aspects were reviewed.

The risk factors of mortality in peritoneal dialysis patients in different periods / 中华肾脏病杂志

Objective To explore the risk factors and characteristics in patients with peritoneal dialysis who died in different periods.Methods The clinical data of new peritoneal dialysis patients in the Department of Nephrology and Peritoneal Dialysis Center of the First Affiliated Hospital of Nanchang University from November 1,2005 to February 28,2017 was retrospectively analyzed.The patients were divided into two groups according to the time of death:those who died within one year and died after one year.The risk factors of mortality between the two groups were analyzed by Cox regression model.Results A total of 997 patients were enrolled and 244 patients died.There were 69 patients (28.3％) died within one year and 175 patients (71.7％) died after one year.Cardiovascular and cerebrovascular disease was the dominating reason of death in both groups,accounting for 59.4％ (died within one year group) and 51.4％ (died after one year group) respectively.Cox regression analysis showed that for died within one year group,old age (HR=1.035,95％ CI:1.016-1.055,P＜ 0.001),low blood total calcium (HR=0.167,95％ CI:0.053-0.529,P=0.002),low albumin (HR=0.899,95％CI:0.856-0.943,P ＜ 0.001) and low apolipoprotein A1 (HR=0.274,95％CI:0.095-0.789,P=0.016) were risk factors associated with mortality.However,for died after one year group,old age (HR=1.053,95％CI:1.038-1.069,P ＜ 0.001),combined with diabetes (HR=2.181,95％CI:1.445-3.291,P ＜ 0.001) and hypertriglyceride (HR=l.204,95％CI:1.065-1.362,P=0.003) were risk factors associated with mortality.Conclusions The risk factors of mortality for peritoneal dialysis patients of different periods were not exactly the same.For died within one year patients,old age,low blood total calcium,low albumin and low apolipoprotein A1 were independent risk factors for mortality.However,for died after one year patients,old age,combined with diabetes,and high triglycerides were independent risk factors for mortality.