The importance and feasibility was analyzed of the teaching BBS for aiding classroom teaching based on campus network. The design, technique, content, advantages and deficiencies were presented of agricultural microbiology teaching BBS. The prospect also was discussed of teaching BBS based on campus network in this paper.

OBJECTIVETo investigate the distribution of congenital heart disease (CHD) aged 3 - 18 in several regions of Yunnan province.

METHODSCross-rectional studies were carried out among 48 638 children from Xishuangbanna, Dali, Baoshan Longling, Luxi Mangshi and Gejiu in Yunnan province with stratified, clustered sampling.

RESULTSThe overall morbidity of CHD was 5.08 per thousand with 5.09 per thousand in males and 5.07 per thousand in females. Morbidity rates in different regions were 2.75 per thousand in Xishuangbanna, 7.85 per thousand in Dali, 9.59 per thousand in Baoshan Long ling, 4.80 per thousand in Gejiu, 16.99 per thousand in Luxi Wuchalu. However, in the same area, rates were different among different residents:3.25 per thousand in Gejiu, and was 9.10 per thousand in Laochang stannum mine, 11.20 per thousand in Datunxuanchang; 5.74 per thousand at the city of Baoshan Longling, 11.35 per thousand at countryside; 4.90 per thousand at the city of Dali, 8.71 per thousand at countryside; 1.69 per thousand at the city of Xishuangbanna, 4.40 per thousand at country. Morbidity rates in different ethnic groups were as follows: 5.39 per thousand in Dai, 6.83 per thousand in Jinuo, 0 per thousand in Hani, 8.12 per thousand in Bai, 14.18 per thousand in Jingpo.

CONCLUSIONThere were significant regional and ethnic differences seen in Yunnan on the mobidity of CHD which was different from the domestic literature reported.

Adolescent ; Child ; Child, Preschool ; China ; epidemiology ; ethnology ; Cross-Sectional Studies ; Female ; Heart Defects, Congenital ; epidemiology ; Humans ; Male ; Mass Screening ; Prevalence

Hepatocyte growth factor (HGF) is one of major growth factors in the bone marrow microenvironments with which the proliferation, differentiation and migration of bone marrow-derived mesenchymal stem cells were closely contacted. However, its roles in the regulation of proliferation, differentiation and migration of bone marrow-derived mesenchymal stem cells remain unclear. This study was aimed to investigate the effect of HGF on biological characteristics of bone marrow-derived mesenchymal stem cells. Expression of c-Met, the receptor for HGF was detected by immunohistochemistry assay, cell proliferation was determined by MTT, activity of ALP was quantitatively assayed, cell migration and anoikis-induced MSC apoptosis were analyzed. The results showed that HGF not influenced the proliferation and osteogenic differentiation of bone marrow-derived mesenchymal stem cells. Treatment of bone marrow-derived mesenchymal stem cells with recombinant human hepatocyte growth factor resulted in inhibition of anoikis-induced apoptosis. HGF significantly stimulated the migration of bone marrow-derived mesenchymal stem cells. Both PI-3 kinase and MAPK kinase were proved to be involved in HGF-induced migration. It is concluded that HGF/c-Met signal regulates the apoptosis and migration of bone marrow-derived mesenchymal stem cells.
Anoikis ; drug effects ; Bone Marrow Cells ; cytology ; drug effects ; metabolism ; Cell Movement ; drug effects ; Cell Proliferation ; drug effects ; Cells, Cultured ; Hepatocyte Growth Factor ; pharmacology ; Humans ; Immunohistochemistry ; Mesenchymal Stromal Cells ; cytology ; drug effects ; metabolism ; Proto-Oncogene Proteins c-met ; biosynthesis

AIMTo assess whether hepatocyte growth factor recruits bone marrow-derived endothelial progenitor cells into blood circulation to participate in postnatal angiogenesis and endothelium repair.

METHODSThe adenovirus vector encoding HGF gene (Ad-HGF) were intravenous administrated into BALB/c mice, and then serum HGF was determined by enzyme-linked immunosorbent assay, the number of CD34+ cells in peripheral blood was assayed by flow cytometry, and the nucleated cells in peripheral blood were isolated, cultured and the endothelial cell colonies were characterized by staining with antibodies against tie-2, vWF. The carbon tetrachloride-induced liver damage model of female mice was established. The peripheral blood nucleated cells of Ad-HGF treated male mice were intravenous administrated into these mice, and 4 weeks later, in situ hybridization for the sry gene was used to identify the implanted cells in the damaged tissues.

RESULTSIntravenous administration of Ad-HGF resulted in significant elevation of serum hepatocyte growth factor level and induced profoundly increase of endothelial progenitor cells in the peripheral blood, which were characterized by their ability to form endothelial cell colonies in culture and expression of CD34, tie-2, and vW factor. HGF-mobilized endothelial progenitors could incorporate into sites of neovascularization in a liver regeneration model.

CONCLUSIONHepatocyte growth factor could markedly recruit bone marrow-derived endothelial progenitor cells into blood circulation.

Animals ; Bone Marrow Cells ; cytology ; Endothelial Cells ; cytology ; Female ; Hematopoietic Stem Cell Mobilization ; Hepatocyte Growth Factor ; pharmacology ; Male ; Mice ; Mice, Inbred BALB C ; Stem Cells ; cytology

BACKGROUND: To mimic physiological and functional requirements of cartilage and subcondral bone, some recent studies have fabricated bilayered scaffolds for osteochondral tissue engineering in cartilage repair. However, in cartilage repair, and little is reported on the use of a single biomaterial instead of composite biomaterials to fabricate bilayered porous scaffolds. OBJECTIVE: To investigate the biocompatibility of an integrated bilayered porous scaffold fabricated with poly(lactic-co-glycolide) (PLGA), and then to discuss its feasibility of constructing tissue-engineered osteochondral graft. METHODS: The integrated bilayered porous scaffolds were fabricated with PLGA by changing the ultrastructure of scaffold.In vitro,bone marrow mesenchymal stem cells(BMSCs)isolated from rabbits were seeded into the bilayered porous PLGA scaffold, co-cultured for 1 week and then observed under scanning electron microscope. After co-culturing 48 hours,the cells were stained by LIVE/DEAD Kit.In vivo,the composite of DiI-labeled BMSCs and the scaffold or the scaffold alone were implanted subcutaneously into the skin of nude mice, and the implants were taken out and stained by hematoxylin-eosin and DAPI staining at 4 and 8 weeks after implantation. RESULTS AND CONCLUSION: (1) We successfully obtained the bilayered porous scaffolds with different pore sizes (the upper layer:100-200 μm and the lower layer:300-450 μm)and 85% porosity.(2)In the in vitro experiment,the LIVE/DEAD staining showed that BMSCs survived well in the scaffold, and the cells adhered well to the wall of pores in all the scaffolds and extracellular matrix deposition was found under the scanning electron microscope.(3)In the in vivo experiment, shown by the hematoxylin-eosin staining, a small amount of chondrocytes formed in the fibrous tissue in the upper layer and a large amount of trabecular bones in the lower layer were found at 8 weeks after implantation in the experimental group. The close integration between the upper layer and the lower layer appeared. BMSCs could survive for 8 weeks in vivo shown by the DAPI staining.However,in the control group,a little fibrous tissue was found without chondrocytes and apparent trabecular bone, and the scaffold was partially degraded. To conclude, the integrated bilayered porous scaffold fabricated with PLGA alone has good biocompatibility, which is feasibly used in osteochondral tissue engineering.

Objective To investigate the expression of long non-coding RNA NONHSA1254644 in lung adenocarcinoma and its clinical significance.Methods 99 cases of lung adenocarcinoma and the adjacent tissues as well as clinical data was collected.The expression level was detected by quantitative realtime polymerase chain reaction (qRT-PCR).Then the relationship between the expression level and the clinical parameters was analyzed.Cell counting kit-8 (CCK8) was used to investigate its effect of lung adenocarcinoma cell line A549 on proliferation.Results The expression of NONHSA1254644 was down-regulated in lung adenocarcinoma,and its expression was positively correlated with the differentiation of patients.The overexpression of NONHSA1254644 could inhibit the proliferation of A549 cells.Conclusions NONHSA1254644 is involved in the development and progression of lung adenocarcinoma.

This study aimed to explore the mechanism of resveratrol(RES) pretreatment in improving mitochondrial function and alleviating myocardial ischemia-reperfusion(IR) injury by inhibiting stromal interaction molecule 2(STIM2) through microRNA-20 b-5 p(miR-20 b-5 p). Ninety rats were randomly assigned into sham group, IR group, IR+RES(50 mg·kg~(-1) RES) group, IR+RES+antagomir NC(50 mg·kg~(-1) RES+80 mg·kg~(-1) antagomir NC) group, and IR+RES+miR-20 b-5 p antagomir(50 mg·kg~(-1) RES+80 mg·kg~(-1) miR-20 b-5 p antagomir) group, with 18 rats/group. The IR rat model was established by ligation of the left anterior descending coronary artery. Two weeks before the operation, rats in the IR+RES group were intraperitoneally injected with 50 mg·kg~(-1) RES, and those in the sham and IR groups were injected with the same dose of normal saline, once a day. Ultrasonic instrument was used to detect the left ventricular internal diameter at end-diastole(LVIDd) and left ventricular internal diameter at end-systole(LVIDs) of rats in each group. The 2,3,5-triphenyte-trazoliumchloride(TTC) method and hematoxylin-eosin(HE) staining were employed to detect the myocardial infarction area and histopathology, respectively. Real-time quantitative PCR(qRT-PCR) was carried out to detect the expression of miR-20 b-5 p in myocardial tissue. Oxygen glucose deprivation/reoxygenation(OGD/R) was performed to establish an OGD/R model of H9 c2 cardiomyocytes. CCK-8 assay was employed to detect H9 c2 cell viability. H9 c2 cells were assigned into the control group, OGD/R group, OGD/R+RES group(25 μmol·L~(-1)), OGD/R+RES+inhibitor NC group, OGD/R+RES+miR-20 b-5 p inhibitor group, mimic NC group, miR-20 b-5 p mimic group, inhibitor NC group, and miR-20 b-5 p inhibitor group. Flow cytometry was employed to detect cell apoptosis. Western blot was employed to detect the expression of B-cell lymphoma-2(Bcl-2), Bcl-2-associated X protein(Bax), cleaved-cysteine proteinase 3(cleaved-caspase-3), and STIM2 in cells. The mitochondrial membrane potential(MMP) assay kit, reactive oxygen species(ROS) assay kit, and adenosine triphosphate(ATP) assay kit were used to detect the MMP, ROS, and ATP levels, respectively. Dual luciferase reporter gene assay was adopted to verify the targeting relationship between miR-20 b-5 p and STIM2. Compared with the sham group, the modeling of IR increased the myocardial infarction area, LVIDd, LVIDs, and myocardial pathology and down-regulated the expression of miR-20 b-5 p(P<0.05). These changes were alleviated in the IR+RES group(P<0.05). The IR+RES+miR-20 b-5 p antagomir group had higher myocardial infarction area, LVIDd, LVIDs, and myocardial pathology and lower expression of miR-20 b-5 p than the IR+RES group(P<0.05). The OGD/R group had lower viability of H9 c2 cells than the control group(P<0.05) and the OGD/R+RES groups(25, 50, and 100 μmol·L~(-1))(P<0.05). Additionally, the OGD/R group had higher H9 c2 cell apoptosis rate, protein levels of Bax and cleaved caspase-3, and ROS level and lower Bcl-2 protein, MMP, and ATP levels than the control group(P<0.05) and the OGD/R+RES group(P<0.05). The OGD/R+RES+miR-20 b-5 p inhibitor group had higher H9 c2 cell apoptosis rate, protein levels of Bax and cleaved-caspase 3, and ROS level and lower Bcl-2 protein, MMP, and ATP levels than the OGD/R+RES group(P<0.05). miR-20 b-5 p had a targeting relationship with STIM2. The expression of STIM2 was lower in the miR-20 b-5 p mimic group than in the mimic NC group(P<0.05) and lower in the inhibitor NC group than in the miR-20 b-5 p inhibitor group(P<0.05). RES pretreatment can inhibit the expression of STIM2 by promoting the expression of miR-20 b-5 p, thereby improving the function of mitochondria and alleviating myocardial IR damage.
Animals ; Rats ; Adenosine Triphosphate ; Antagomirs/metabolism* ; bcl-2-Associated X Protein/metabolism* ; Caspase 3/metabolism* ; Glucose/metabolism* ; MicroRNAs/metabolism* ; Mitochondria, Heart/drug effects* ; Myocardial Infarction/drug therapy* ; Myocardial Reperfusion Injury/drug therapy* ; Myocytes, Cardiac ; Oxygen/metabolism* ; Proto-Oncogene Proteins c-bcl-2/metabolism* ; Rats, Sprague-Dawley ; Reactive Oxygen Species/metabolism* ; Resveratrol/therapeutic use* ; Stromal Interaction Molecule 2/metabolism*

OBJECTIVE: To compare the clinical effects of different anterior surgical methods in treating single segment cervical disc herniation. METHODS: The clinical data of 46 patients with single-segment cervical disc herniation underwent surgical treatment from September 2013 to September 2018 were retrospectively analyzed. The patients were divided into three groups according to different surgical methods. Among them, 23 patients in the anterior percutanousendomic cervical dissection (APECD) group, there were 8 males and 15 females, aged (47±3) years old, prominent segments were C RESULTS: All 46 patients were followed up for 12 to 24 (17.57±3.15)months. The follow-up time of APECD, CDR, ACDF groups were (17.30±3.25), (17.80±3.16), (17.85±2.88) months, and operation time were (95.48 ±13.85), (58.50±7.09), (76.00±15.72) min, respectively, there were no significant differences in follow-up time and operation time between two groups( CONCLUSION The three anterior surgical approaches can achieve satisfactory clinical results for the treatment of single-segment cervical disc herniation. However, the improvement rate of the CDR group and the activity of the retained responsibility segment are better than those of the other two groups. APECD surgery may have recurrence.
Adult ; Cervical Vertebrae/surgery* ; Diskectomy ; Female ; Follow-Up Studies ; Humans ; Intervertebral Disc Degeneration/surgery* ; Male ; Middle Aged ; Retrospective Studies ; Spinal Fusion ; Total Disc Replacement ; Treatment Outcome

OBJECTIVE: To evaluate the efficacy and safety of Cidan Capsule combined with adjuvant transarterial chemoembolization (TACE) in patients with a high risk of early recurrence after curative resection of hepatocellular carcinoma (HCC). METHODS: A multicenter, randomized controlled trial was conducted in patients with high-risk recurrence factors after curative resection of HCC from 9 medical centers between July 2014 and July 2018. Totally 249 patients were randomly assigned to TACE with or without Cidan Capsule administration groups by stratified block in a 1:1 ratio. Postoperative adjuvant TACE was given 4-5 weeks after hepatic resection in both groups. Additionally, 125 patients in the TACE plus Cidan group were administrated Cidan Capsule (0.27 g/capsule, 5 capsules every time, 4 times a day) for 6 months with a 24-month follow-up. Primary endpoints included disease-free survival (DFS) and tumor recurrence rate (TRR). Secondary endpoint was overall survival (OS). Any drug-related adverse events (AEs) were observed and recorded. RESULTS: As the data cutoff in July 9th, 2018, the median DFS was not reached in the TACE plus Cidan group and 234.0 days in the TACE group (hazard ratio, 0.420, 95% confidence interval, 0.290-0.608; P<0.01). The 1- and 2-year TRR in the TACE plus Cidan and TACE groups were 31.5%, 37.1%, and 60.8%, 63.4%, respectively (P<0.01). Median OS was not reached in both groups. The 1- and 2-year OS rates in TACE plus Cidan and TACE groups were 98.4%, 98.4%, and 89.5%, 87.9%, respectively (P<0.05). The most common grade 3-4 AEs included fatigue, abdominal pain, lumbar pain, and nausea. One serious AE was reported in 1 patient in the TACE plus Cidan group, the death was due to retroperitoneal mass hemorrhage and hemorrhagic shock, and was not related to study drug. CONCLUSIONS Cidan Capsule in combination with TACE can reduce the incidence of early recurrence in HCC patients at high-risk of recurrence after radical hepatectomy and may be an appropriate option in postoperative anti-recurrence treatment. (Registration No. NCT02253511).

Objective: To investigate the prognostic factors of children with congenital heart disease (CHD) who had undergone cardiopulmonary resuscitation (CPR) in pediatric intensive care unit (PICU) in China. Methods: From November 2017 to October 2018, this retrospective multi-center study was conducted in 11 hospitals in China. It contained data from 281 cases who had undergone CPR and all of the subjects were divided into CHD group and non-CHD group. The general condition, duration of CPR, epinephrine doses during resuscitation, recovery of spontaneous circulation (ROSC), discharge survival rate and pediatric cerebral performance category in viable children at discharge were compared. According to whether malignant arrhythmia is the direct cause of cardiopulmonary arrest or not, children in CHD and non-CHD groups were divided into 2 subgroups: arrhythmia and non-arrhythmia, and the ROSC and survival rate to discharge were compared. Data in both groups were analyzed by t-test, chi-square analysis or ANOVA, and logistic regression were used to analyze the prognostic factors for ROSC and survival to discharge after cardiac arrest (CA). Results: The incidence of CA in PICU was 3.2% (372/11 588), and the implementation rate of CPR was 75.5% (281/372). There were 144 males and 137 females with median age of 32.8 (5.6, 42.7) months in all 281 CPA cases who received CPR. CHD group had 56 cases while non-CHD had 225 cases, with the percentage of 19.9% (56/281) and 80.1% (225/281) respectively. The proportion of female in CHD group was 60.7% (34/56) which was higher than that in non-CHD group (45.8%, 103/225) (χ²=4.00, P=0.045). There were no differences in ROSC and rate of survival to discharge between the two groups (P>0.05). The ROSC rate of children with arthythmid in CHD group was 70.0% (28/40), higher than 6/16 for non-arrhythmic children (χ²=5.06, P=0.024). At discharge, the pediatric cerebral performance category scores (1-3 scores) of CHD and non-CHD child were 50.9% (26/51) and 44.9% (92/205) respectively. Logistic regression analysis indicated that the independent prognostic factors of ROSC and survival to discharge in children with CHD were CPR duration (odds ratio (OR)=0.95, 0.97; 95%CI: 0.92~0.97, 0.95~0.99; both P<0.05) and epinephrine dosage (OR=0.87 and 0.79, 95%CI: 0.76-1.00 and 0.69-0.89, respectively; both P<0.05). Conclusions: There is no difference between CHD and non-CHD children in ROSC and survival rate of survival to discharge was low. The epinephrine dosage and the duration of CPR are related to the ROSC and survival to discharge of children with CHD.
Cardiopulmonary Resuscitation ; Child ; Child, Preschool ; Female ; Heart Arrest/therapy* ; Heart Defects, Congenital/therapy* ; Humans ; Intensive Care Units, Pediatric ; Male ; Retrospective Studies