Research progress of natural product evodiamine-based antitumor drug design strategies / 药学学报

Natural products are important sources for the discovery of anti-tumor drugs. Evodiamine is the main alkaloid component of the traditional Chinese herb Wu-Chu-Yu, and it has weak antitumor activity. In recent years, a number of highly active antitumor candidates have been discovered with a significant progress. This article reviews the research progress of evodiamine-based antitumor drug design strategies, in order to provide reference for the development of new drugs with natural products as leads.

Comparison of anti-ischemic stroke effect of different extraction parts from Gastrodia elata / 中国药房

OBJECTIVE To compare anti-ischemic stroke （IS） effect of different extraction parts from Gastrodia elata， and to provide reference for screening the anti-IS effective parts of G. elata. METHODS G. elata was extracted and separated by ethanol reflux extraction and ethyl acetate extraction. The rat model of diffuse cerebral thrombosis was induced by internal carotid artery injection of arachidonic acid （AA）； the anti-IS effect of G. elata powder， ethanol extract of G. elata， residue of ethanol extract of G. elata， ethyl acetate extract of G. elata， residue of ethyl acetate extract of G. elata， gastrodin and aspirin （positive control drug） were investigated with the content of Evans blue （EB） in the ischemic brain tissue as index. RESULTS Compared with model group， aspirin， ethanol extract of G. elata and ethyl acetate extract of G. elata could significantly decrease the content of EB in the ischemic brain tissue of model rats （P＜0.05）. G. elata powder had the tendency to reduce the content of EB in the ischemic brain tissue of model rats， without statistical significance （P＞0.05）. The residue of ethanol extract of G. elata， residue of ethyl acetate extract of G. elata and gastrodin had little effect on the content of EB in the ischemic brain tissue of model rats. CONCLUSIONS Both ethanol extract of G. elata and ethyl acetate extract of G. elata have anti-IS effects， which are stronger than that of G. elata powder.

Scientific basis of acupuncture on mesenchymal stem cells for treating ischemic stroke / 中国针灸

The scientific basis of acupuncture on mesenchymal stem cells (MSCs) for treating ischemic stroke (IS) is discussed. MSCs transplantation has great potential for the treatment of tissue damage caused by early stage inflammatory cascade reactions of IS, but its actual transformation is limited by various factors. How to improve the homing efficiency of MSCs is the primary issue to enhance its efficacy. As such, the possible mechanisms of acupuncture and MSCs transplantation in inhibiting inflammatory cascade reactions induced by IS are explored by reviewing literature, and a hypothesis that acupuncture could promote the secretion of stromal cell-derived factor-1α (SDF-1α) from ischemic foci to regulate SDF-1α/CXC chemokine receptor 4 (CXCR4) axis, thereby improving the homing efficiency of MSCs transplantation, exerting its neuroprotective function, and improving the bed transformation ability, is proposed.

Feature Deconstruction Strategy Based Identification of Acute Features Associated With Impairment of Activities of Daily Living in Patients With Traumatic Brain Injury / 中山大学学报(医学科学版)

ObjectiveTo identify acute phase features associated with the prognosis of traumatic brain injury （TBI）. MethodsThrough two traditional strategies， correlation analysis and prediction model， and one innovative research strategy based on feature deconstruction， a retrospective analysis was conducted using demographic， acute phase and chronic phase features of 354 TBI patients to identify acute phase features associated with activities of daily living （ADL） in chronic phase of TBI. For feature deconstruction strategy， the LASSO （Least Absolute Shrinkage and Selection Operator） algorithm was used to build a prediction model that could effectively predict ADL based on non-ADL chronic phase features. The model could indicate the key chronic phase dimensions determining the ADL in TBI patients. We then identified demographic and acute phase variables that were significantly associated with these key chronic phase features. ResultsThe feature deconstruction strategy revealed that ADL could be deconstructed into chronic phase dimensions such as weak limbs in TBI population. Importantly， to the best of our knowledge， this strategy revealed for the first time the association of these important acute phase features with specific chronic phase impairment features. For example， TBI patients had a higher risk for chronic phase recent memory impairment if they had a prolonged coma time and low GCS scores at acute phase ［scaled coma time OR95%CI = 94.288 （35.095， 273.231）； scaled GCS OR95%CI = 0.068 （0.030， 0.147）］； the patients had a higher risk for insight impairment and disorientation at chronic phase if they had hydrocephalus at acute phase ［insight impairment OR95%CI = 6.760 （3.653，12.855） ； disorientation OR95%CI = 6.538 （3.530， 12.490）］. All strategies showed that the strongest risk factors for ADL damage in the chronic phase included prolonged coma time and low GCS scores as well as hydrocephalus. ConclusionThis study provides an innovative research strategy to establish the association between acute injury features and chronic recovery features， and to identify demographic and acute phase features associated with the prognosis of TBI.

Short-term Outcomes and Long-term Survival Outcomes of Elderly Patients (Over 80 Years of Age) with Colorectal Cancer Who Received Laparoscopic Versus Open Surgery / 肿瘤防治研究

Objective To examine short-term outcomes and long-term survival of elderly patients (aged over 80 years) with colorectal cancer who received laparoscopic versus open surgery. Methods A total of 313 patients over 80 years old with colorectal cancer who underwent radical surgery were included.According to the surgical method, all patients were divided into open-surgery group (n=143) and laparoscopic surgery group (n=170).Baseline data were balanced between the two groups by using propensity score matching.Kaplan-Meier was used to draw the survival curve, and survival was compared by Log rank tests.Cox proportional risk model was used to analyze the effects of all factors on overall survival (OS) and disease-free survival (DFS). Results After matching, 93 patients were included in each group.The mean intraoperative blood loss, the incidence of overall postoperative complications and gradeⅠ-Ⅱ complications in the laparoscopic surgery group were significantly lower than those in the open surgery group (all P < 0.05).The time to first flatus, the time to oral feeding, and postoperative hospital stays in the laparoscopic surgery group were significantly shorter than those in the open surgery group (all P < 0.05).The mean number of lymph-node dissection was also significantly higher in the laparoscopic surgery group than in the open surgery group (P=0.030).Patients in both groups had similar 5-year OS (P=0.594) and DFS (P=0.295).Multivariate Cox prognostic analysis showed that CEA level > 5 ng/ml, pathological TNM stage Ⅲ, and perineural invasion were independent risk factors for poor OS and DFS. Conclusion Compared with open surgery, laparoscopic surgery can provide better short-term advantages and similar long-term outcomes for colorectal cancer patients over 80 years of age.

Diagnosis and management of orbital and cranial complications of pediatric acute rhinosinusitis / 中华耳鼻咽喉头颈外科杂志

Objective: To review the clinical characteristics, to illustrate diagnosis and management experience of orbital and cranial complications of pediatric acute rhinosinusitis. Methods: The clinical data of 24 children with orbital and cranial complications of acute rhinosinusitis who received endoscopic sinus surgery combined with drug treatment in Beijing Children's Hospital from January 2017 to December 2021 were retrospectively reviewed. There were 19 boys and 5 girls. The age varied from 13 to 159 months, with a median 47.5 months. The following diagnoses were obtained: 12 isolated subperiosteal orbital abscess, 2 associated with preseptal abscess, 2 associated with intraorbital abscess, 7 associated with optic neuritis, and 1 associated with septic cavernous sinus thrombosis. Clinical characteristics, organism isolated and outcomes were analyzed through descriptive methods. Results: All 24 patients presented with fever; 9 presented with nasal congestion and purulent discharge. The clinical manifestations of orbital infection included orbital edema, pain, proptosis and displacement of globe in all patients, while visual impairment was recognized in 7 children. Purulent drainage was cultured in 17 patients, among which 12 were positive. All patients underwent nasal endoscopic surgical interventions uneventfully, excluding one patient who required a second surgical procedure. Follow-up period ranged from 5 to 64 months. All patients resolved fully, with the exception of 2 children who got permanent blindness with visual loss preoperative. There was no recurrence or death. Conclusions: Orbital and cranial complications of pediatric acute rhinosinusitis could be severe with an occult onset. For patients with vison impairment, any signs of intracranial complications and a lack of response to conservative management, an urgent endoscopic intervention is needed.

The development status and path of rare disease treatment and orphan drugs in China / 中国药理学通报

Rare diseases are a group of diseases with low incidence, complex conditions, difficulty in diagnosis and poor treatment accessibility. With the growing attention on rare diseases in China in recent years, relevant policies are gradually improved, rapid progress have been made in the treatment of rare diseases and the development of orphan drugs, but there are still challenges. Based on the development status of rare disease treatment and orphan drugs, this paper elaborates on the development path of rare disease diagnosis, and provides reference for the rare disease treatment, orphan drug development and policy formation in China.

Pediatric nasal neuroglial heterotopia: report of 13 cases / 中华耳鼻咽喉头颈外科杂志

Objective: To summarize clinical features and our experience of the diagnosis and treatment of pediatric nasal neuroglial heterotopia (NGH). Methods: Clinical data of 13 nasal NGH patients in Beijing Children's Hospital from August 2014 to October 2019 were retrospectively reviewed, including 9 boys and 4 girls, aged from 1 to 38 months with median age of 5 months. Radiological workups and excision of nasal NGH under general anesthesia were performed for all patients. B ultra-sound and MRI were performed for all external and mixed lesions, while ultra-low-dose CT scan and MRI for all intranasal type. Surgical approaches were dependent on location and extent of the lesions according to radiographic workup, including extranasal or transnasal endoscopic approach. Patients were followed up regularly after operation to evaluate the effect. Initial presentation, locations, imaging findings, surgical approaches and follow-up results were analyzed through descriptive statistical method. Results: Eight nasal NGH patients presented with an internal nasal mass and nasal obstruction, which belonged to intranasal type. Three patients presented with an external nasal mass which belonged to extranasal type and 2 patients had mixed lesions. The sites included nasal dorsum (n=5), anterior to the middle turbinate (n=5) and olfactory cleft (n=3). Surgical resections were done through median rhinotomy approach (n=5) or transnasal endoscopic approach (n=8). All the operations were successful and no complication occurred. All cases were followed up from 3 to 65 months. No recurrence was encountered. Conclusions: Nasal NGH is a rare lesion with atypical clinical presentation. Preoperative imaging including CT scan and MRI is essential for evaluation of the location, extent of the disease and for making the surgical plan. Treatment requires complete surgical excision.

School physician in primary and secondary schools in Yichang of Hubei Province during 2019-2020 / 中国学校卫生

Objective@#To understand school physician in primary and secondary schools in Yichang City, Hubei Province from 2019 to 2020, and to provide a reference for strengthening the school physician team in primary and secondary schools.@*Methods@#149 and 102 primary and secondary schools from 6 municipal districts in Yichang City, Hubei Province, were randomly selected in November 2019 and November 2020, respectively, and were administered by questionnaire survey.@*Results@#The proportion of school physicians increased from 39.6% in 2019 to 65.7% in 2020. In the past two years, the equipment rate of school physician in both central and fringe urban areas increased, especially the fringe urban areas, number of school physician increased from 38 to 96. A total of 93 and 141 school physicians were selected to pariticipate in questionaire survey in 2019 and 2020 respectively. The survey showed that more than 90% of school physicians in primary and secondary schools in Yichang received training, and 74.5% had college education level. However, most of them lack professional qualification and medical background.@*Conclusion@#School physician of primary and secondary of Yichang is well development over the past two years, and the proportion substantially increased. However, there is still room for improvement in the quantity and quality of school physicians, and professional qualification needs to be improved. More attention should be paid to the marginal urban areas to achieve a balance between quantity and quality.

The sex- and age-specific association between resting heart rate and hypertension in rural adult residents of Henan province / 中华心血管病杂志

Objective: To investigate the sex- and age-specific association between resting heart rate and hypertension in rural adult residents of Henan province. Methods: At baseline, a total of 20 194 participants were randomly selected from Xin'an County of Henan province between July 2007 and August 2008. After excluding participants with hypertension or without resting heart rate data at baseline, and participants died or without hypertension outcome or diagnosed as gestational hypertension during follow-up between July 2013 and October 2014, 10 212 participants were finally included in this study. Multiple linear regression model was used to examine the association between resting heart rate and change of blood pressure. Logistic regression model was used to estimate the association between resting heart rate and risk of hypertension. Results: There were 2 059 new hypertensive cases (839 male) during the 6 years follow-up. After controlling for potential confounders, per 5 beats/minutes increases in resting heart rate was associated with 0.18 mmHg (1 mmHg=0.133 kPa) (95%CI 0.01-0.36 mmHg, P=0.046) absolute increase in systolic blood pressure and 7% higher risk of developing hypertension in women (95%CI 1.03-1.11, P<0.05). Compared with resting heart rate<70 beats/minutes, the adjusted RRs for 76-82 and>82 beats/minutes groups were 1.39 (95%CI 1.18-1.63, P<0.05) and 1.22 (95%CI 1.02-1.45, P<0.05), respectively. For both age groups, increased resting heart rate was positively associated with risk of hypertension in women(RR=1.05(95% CI 1.01-1.10), P<0.05 (the women those <60 years); RR=1.14(95% CI 1.04-1.25), P<0.05 (the women those≥60 years). However, no significant association was found between resting heart rate and hypertension in male residents. Conclusions: Increased resting heart rate is associated with high risk of hypertension in women who live in rural area, especially in elder women of this cohort.

Application and management of autologous bone marrow stem cells in treatment of liver cirrhosis / 临床肝胆病杂志

Liver transplantation is considered the best method for the treatment of liver cirrhosis, but its clinical application is limited by the shortage of liver donors, high costs, and immunological rejection. In recent years, bone marrow stem cells (BMSCs) has shown great prospects in the treatment of liver cirrhosis. Recent clinical studies have shown that BMSC therapy is a safe and effective treatment method for liver cirrhosis, but its mechanism remains unclear, and there are various treatment regimens. This article reviews the mechanism of BMSCs in the treatment of liver cirrhosis, route of BMSC delivery, indices for therapeutic effect evaluation, and dose of BMSCs.

Immunotherapy for biliary tract cancer: Current status and perspectives / 临床肝胆病杂志

Biliary tract cancer (BTC) is rare in clinical practice and is difficult to diagnose in the early stage, and conventional treatment methods have unsatisfactory clinical effects. As a new research hotspot at present, immunotherapy has been proven to have a promising future in the treatment of a variety of cancers. At present, various immunotherapies, including immunological checkpoint inhibitors, adoptive immune cell therapy, and tumor vaccine therapy, have been applied in the clinical trials of BTC. This article briefly describes the current status and perspectives of immunotherapy in the treatment of BTC.

Screening of optimal siRNA interference sequence of CIT gene and its inhibition expression in hepatoma SK-Hep-1 / 中华肝脏病杂志

Objective@#To construct and screen optimal siRNA interference sequence of CIT gene and to detect its interference efficiency as well as proliferation effect in human hepatoma cell line SK-Hep-1.@*Methods@#Three siRNA target spots were designed and synthesized according to the CIT gene sequence. SK-Hep-1 HCC cells were transfected by liposome transfection. The knockdown efficiency of the target CIT gene was detected by real-time PCR and Western blot. Expressional change of CIT in SK-Hep-1 cells after 48 hours of siRNA interference were observed by immunohistochemistry and confocal microscopy. The proliferation of SK-Hep-1 cells after 48 hours of siRNA interference was detected by EdU cell proliferation assay. A t-test was used to compare the mean of two samples, and one-way ANOVA was used to compare the mean of multiple samples.@*Results@#Western blot results showed that the three interference sequences were targeted at different target spots. The expression level of CIT protein in KD-1,-2, and-3 groups were decreased (P < 0.01) than control, while the protein expression level of KD1 group was the lowest. Real-time PCR results showed that compared with the control group, the expression level of CIT mRNA in KD-1, -2, and -3 groups decreased (P < 0.01), while that in KD1 group was the lowest. Laser confocal microscopy also confirmed that the morphological expression of CIT attenuated significantly after transfection with siRNA. The results of EdU proliferation assay showed that siRNA transfected with CIT significantly attenuated the proliferation of SK-Hep-1 hepatoma cells (P < 0.05).@*Conclusion@#The successful construction and screening of siRNA fragments can effectively inhibit the expression and proliferation of CIT gene in hepatoma SK-Hep-1.

Progress in gene knockout mice / 生物工程学报

The establishment and development of gene knockout mice have provided powerful support for the study of gene function and the treatment of human diseases. Gene targeting and gene trap are two techniques for generating gene knockout mice from embryonic stem cells. Gene targeting replaces endogenous knockout gene by homologous recombination. There are two ways to knock out target genes: promoter trap and polyA trap. In recent years, many new gene knockout techniques have been developed, including Cre/loxP system, CRISP/Cas9 system, latest ZFN technology and TALEN technology. This article focuses on the several new knockout mouse techniques.

Effect of Xuebijing injection on postoperative inflammatory response in patients after hepatobiliary and pancreatic surgeries: a retrospective cohort study / 中华危重病急救医学

Objective To analyze the effect of Xuebijing injection on inflammatory response in patients after hepatobiliary and pancreatic surgeries, and to evaluate its safety and clinical value. Methods A retrospective cohort study was conducted. 708 patients received hepatobiliary and pancreatic surgeries of Nanfang Hospital, Southern Medical University from January 2015 to September 2017 were enrolled and divided into Xuebijing treatment group and conventional treatment group according to whether they were treated with Xuebijing injection or not. The inflammatory response indexes included white blood cell count (WBC), neutrophil (NE), C-reactive protein (CRP), body temperature, which were compared between the two groups at 1, 3, and 5 days after operation. The incidence of adverse reactions, the length of postoperative hospital stays and hospitalization costs were compared. Results A total of 209 patients were prescribed with Xuebijing injection, and 499 patients were allocated into conventional treatment group. The two groups were stratified by liver, biliary and pancreatic surgery types, and further 1:1 propensity score matching was performed. After propensity score match, 189 patients were included in each group, with 101, 46, and 42 patients undergoing liver, biliary, and pancreas surgery, respectively. There were no significant differences in baseline data such as gender, age and inflammatory response indexes before surgery between the two groups. In both groups, the WBC and NE showed a gradual decline after operation, CRP were increased gradually and then decreased after 3 days. Compared with the conventional treatment group, Xuebijing treatment group showed obvious anti-inflammatory effect from 3 days after operation [WBC (×109/L): 10.1±4.0 vs. 11.0±3.5, NE: 0.71±0.10 vs. 0.76±0.12, CRP (mg/L): 73.1±38.7 vs. 82.2±41.8, all P < 0.05]. On the 5th day, it still showed a strong anti-inflammatory trend [WBC (×109/L): 7.0±2.8 vs. 7.9±2.6, NE: 0.62±0.10 vs. 0.68±0.12, CRP (mg/L): 43.4±31.0 vs. 50.9±25.3, all P < 0.05]. The cases of postoperative fever in the Xuebijing treatment group were significantly less than that in the conventional treatment group (cases:98 vs. 119, χ2＝4.711, P＝0.029). There was no significant different in the total incidence of adverse drug reactions such as rash, nausea and vomiting (5.0% vs. 3.2%), the length of postoperative hospital stays [days: 9.3 (6.1, 13.5) vs. 9.1 (5.5, 13.3)] and hospitalization costs [wanyuan: 5.8 (3.6, 9.5) vs. 5.7 (3.5, 9.8)] between Xuebijing treatment group and conventional treatment group (all P > 0.05). Conclusions Xuebijing injection has a good anti-inflammatory effect on patients undergoing hepatobiliary and pancreatic surgeries. Xuebijing injection has good safety and can be applied to the prevention and treatment of excessive inflammatory reaction after hepatobiliary and pancreatic surgeries.

Research progress on the pathogenesis of microvascular neuropathy in diabetic retinopathy / 国际眼科杂志(Guoji Yanke Zazhi)

Diabetic retinopathy is one of the common and serious microvascular complications of diabetes. In foreign countries, DR is the leading cause of blindness in the working age group (20 - 64 years). In China, the incidence of DR and the rate of blindness increase year by year, which seriously affects the patients' quality of life. Previous studies on the pathogenesis and treatment of diabetic retinopathy were mainly focused on the microvascular; in recent years, with the deepening of researches, more and more scholars believe that DR is no longer simply a kind of microangiopathy, but is also accompanied by retinal neurodegeneration. However, studies on the pathogenesis of microvascular disease and neurodegenerative changes of diabetic retinopathy in the literature domestic and abroad are mostly single. This article reviews the relationship between microvascular disease and neurodegenerative changes in diabetic retinopathy.

Correlation of complement depletion and the severity of sepsis in children / 中华实用儿科临床杂志

Objective To analyze the relationship between complement key component C3,C4 and the severity of sepsis in children,in order to explore the role of complement activation in the progression of sepsis and provide a reference for diagnosis and treatment of severe sepsis.Methods Four hundred and twenty-four children diagnosed as sepsis from December 2012 to December 2015 in Children's Hospital of Nanjing Medical University were enrolled in this study,among whom 347 children with sepsis were eligible for the following research including 169 cases of common sepsis and 178 cases of severe sepsis.Blood specimens were collected in 24 hours after their admission into pediatric intensive care unit(PICU) for the analysis of lymphocyte subsets,humoral immunity,blood routine analysis,coagulation,liver and renal function analysis.General information was collected by consulting their medical records,laboratory analysis and clinical treatment.The relationship between complement C3,C4 and the severity of sepsis was analyzed,and the correlation between C3 and coagulation,liver,renal,myocardium damage was also studied.Logistic regression was used to analyze the relationship between C3 and the progression to severe sepsis and multiple organ dysfunction syndrome(MODS),while Cox regression was used for survival analysis.Results Natural killer(NK) cell percentage was lower in severe sepsis group than that in common sepsis group [6.6％ (3.7％,10.7％) vs.8.5％ (4.7％,13.3％),Z =2.635,P =0.008],while C3 decreased in severe sepsis group compared with common sepsis group [0.653 (0.462,0.985) g/L vs.0.991 (0.678,1.265) g/L,Z =5.684,P ＜ 0.001],and C4 decreased in severe sepsis group compared with common sepsis group [0.160(0.102,0.244) g/L vs.0.190(0.121,0.265) g/L,Z =2.513,P =0.012].The proportion of severe pneumonia was higher in severe sepsis group than that in common sepsis group (34.3％ vs.19.5％,x2 =9.540,P =0.002),and liver function damage proportion was increased in severe sepsis group than that in common sepsis group (48.3％ vs.16.0％,x2 =41.28,P ＜0.001),and the duration of PICU treatment was longer in severe sepsis group than that in common sepsis group[10.7(6.5,17.4) d vs.7.5(4.0,12.4) d,Z =-4.039,P ＜0.001].C3 was significantly decreased in children with single organ dysfunction,multiple organ dysfunction and death group compared with common sepsis group (K =33.04,P =0.001),and the median of each group decreased with the severity of sepsis,but C4 had no difference among 4 groups (K =7.36,P =0.061).C3 was positively correlated with coagulation marker platelet (p =0.31,P ＜ 0.001) and fibrinogen (ρ =0.53,P ＜ 0.001),but negatively correlated with international normalized ratio (INR) (ρ =-0.39,P ＜ 0.001) and activated partial thromboplastin time (p =-0.34,P ＜ 0.001).C3 was also negatively correlated with liver damage marker alanine transaminase (ρ =-0.30,P ＜ 0.001) and total bilirubin (ρ =-0.28,P ＜ 0.001),and had a negative correlation with renal function marker creatinine (p =-0.24,P ＜ 0.001) and myocardial damage marker creatine kinase-MB (p =-0.27,P ＜ 0.001).The depletion of C3 was a risk factor of severe sepsis(OR =3.45,P ＜ 0.001) and MODS(OR =3.03,P =0.005) after being adjusted for confounding factors by using Logistic regression.In stratification analysis,C3 depletion was still a risk factor of severe sepsis (OR =2.78,P =0.019) and MODS (OR =3.57,P =0.015) among children less than 1 year old,and was also a risk factor of severe sepsis(OR =4.76,P =0.008) among children more than 1 year old as well.In children without liver function damage,C3 depletion was still a risk factor of severe sepsis(OR =4.17,P =0.002) and MODS(OR =9.09,P =0.002).Cox regression showed that C3 depletion was a hazard in 28-day mortality (HR =3.57,P =0.026) in children with sepsis.Conclusion The decrease of C3 is correlated with coagulation dysfunction and organ damage marker,while C3 depletion was a risk factor of severe sepsis,MODS and 28-day mortality,and could be a potential prognostic marker of children with sepsis.

Transforming growth factor-β1 small interfering RNA regulates platelet-derived growth factor and phosphorylated extracellular regulated protein kinase in rats with hepatic fibrosis: an experimental study / 中华肝脏病杂志

Objective@#To investigate the impact of transforming growth factor-β1 (TGF-β1) silencing by small interfering RNA (siRNA) on the expression of platelet-derived growth factor-β (PDGF-BB) and its receptor (PDGF-βR) in rats with hepatic fibrosis.@*Methods@#A total of 40 male Sprague-Dawley rats were randomly divided into normal control group, model group, TGF-β1 siRNA treatment group, and negative control group. All rats except those in the normal control group were given subcutaneous injection of 40% carbon tetrachloride to establish a rat model of hepatic fibrosis. The rats in the negative control group and the TGF-β1 siRNA treatment group were given tail vein injection of negative control plasmid or TGF-β1 siRNA plasmid twice a week at a dose of 0.25 mg/kg, and those in the normal control group and the model group were given the injection of sterile isotonic saline twice a week. The rats were sacrificed after 12 weeks and liver tissue samples were collected. Real-time PCR, immunohistochemistry, and Western blot were used to measure the expression of PDGF-BB, PDGF-βR, and phosphorylated extracellular signal-regulated kinase 1/2 (p-ERK1/2) in liver tissue. A one-way analysis of variance, the q test, and the Kruskal-Wallis test were used for statistical analysis based on data type.@*Results@#Compared with the model group and the negative control group, the TGF-β1 siRNA treatment group had significantly inhibited mRNA and protein expression of PDGF-BB and PDGF-βR (F = 24.785 and 22.92, P < 0.01), as well as significantly inhibited expression of p-ERK1/2 (P < 0.05).@*Conclusion@#Targeted TGF-β1 siRNA can effectively downregulate the expression of PDGF-BB, PDGF-βR, and p-ERK1/2 in liver tissue and thus help to improve hepatic fibrosis.

Antibacterial steroidal alkaloids from Holarrhena antidysenteriaca / 中国天然药物

Two new steroidal alkaloids, isoconkuressine and N-formylconessimine, together with 6 known steroidal alkaloids including conkuressine, conessine, isoconessimine, conimine, conarrhimine, and funtudienine, were isolated from the seeds of Holarrhena antidysenteriaca Wall.ex A.DC. Their intrinsic antibacterial activities and synergistic effects with penicillin and vancomycin were analyzed in methicillin sensitive staphylococcus aureus (MSSA) and methicillin resistant staphylococcus aureus (MRSA). Two of the steroidal alkaloids including one new compound (N-formylconessimine) showed potential antibacterial activity and possessed synergistic effects with penicillin and vancomycin, respectively.

Cognitive Analysis of Medical Precise Health Policy for Poverty Alleviation in Poverty Regions / 中国医院管理

Objective To deal with the awareness rate of medical precise health care policy of the medical care workers in poverty-stricken areas and the influencing factors of the awareness rate.Methods The questionnaire was designed based on literature analysis and expert discussion,and field investigation was done.Statistical analysis and logistic regression analysis were performed using SPSS19.0.Results Only 26.0％ of medical workers express that they were aware of current health poverty alleviation and related policies,while nearly 40％ were not satisfied with current precision health and poverty alleviation policy.Logistic regression analysis indicated that three factors on health care personnel had an impact on the level of awareness of precision health and poverty alleviation policies,"whether the hospital has acquired help from a superior hospital","where the hospital gives help to junior hospitals" and "where the hospital has preferential policies tilt for employees serving primarily for a long time'.Conclusion The awareness and satisfaction on precision health poverty alleviation policy of medical staff at the public county-level hospitals remains to be improved.From the hospital point of view,establishing close county-level rural health and poverty alleviation structure from the hospital and supportive policy of leader-member,innovating management mode,as well as providing preferential policies tilt for employees serving primarily for a long time are viable options for targeted and healthy poverty alleviation.