Purpose To explore the relationship between the expression level of piR-9994 in gastric cancer and its clinical pathological features,and to analyze its correlation with PIWIL4 expression. Methods Express of piR-9994 and PIWIL4 in 76 cases of human gastric cancer tissue with different clinical stage and differentiated degree and matching adjacent tissue were detected by qRT-PCR and immunohistochemistry,respectively. Results The expression of piR-9994 in gastric cancer was 2. 3 times higher than that in paracancerous tissues (P = 0. 002 2) . The expression of piR-9994 in stage Ⅲ + Ⅳ gastric cancer was 3. 5 times higher than that in stage Ⅰ + Ⅱ (P = 0. 002) ,and the expression of piR-9994 in cancers with nerve invasion was 2. 5 times higher than that in cancers without invasion (P = 0. 036) . The positive expression of PIWIL4 in gastric cancer tissues was significantly higher than that in adjacent tissues (χ2 = 18. 346,P < 0. 001) ,and the expression of PIWIL 4 in stage Ⅲ +Ⅳ gastric cancer group was higher than that stage Ⅰ + Ⅱ gastric cancer group (χ2 = 8. 60,P = 0. 003) . There was a positive correlation between piR-9994 expression and PIWIL4 expression in gastric carcinoma (r = 0. 231,P < 0. 05) . Conclusion piR-9994 overexpression in gastric cancer tissues is closely related to tumor staging and nerve invasion,and piR-9994 may promote the occurrence and progression of gastric cancer by regulating PIWIL4 expression. piR-9994 may be a molecular markers for judging malignant degree and prognosis of gastric cancer.

Objective To evaluate the effect of downregulation of microRNA (miR)-373 expression on cell cycle and apoptosis of a cutaneous squamous cell carcinoma (CSCC) cell line A431.Methods A431 cells at exponential growth phase were classified into 3 groups:miR-373 inhibitor group and negative control group transfected with miR-373 inhibitor and negative control miRNA respectively,and untreated group receiving no treatment.At 48 hours after the transfection,real-time PCR was performed to determine the expression of miR-373 in the above 3 groups,cell counting kit-8 (CCK-8) assay to evaluate the effect of downregulated expression of miR-373 on the proliferation of A431 cells,flow cytometry to investigate the distribution of cell cycle and changes in apoptosis of A431 cells in different treatment groups,and colorimetric analysis to detect the changes in caspase-3 activity in different treatment groups.Statistical analysis was carried out with SPSS 17.0 software by using two-sample t test for the comparison between two groups,one-way analysis of variance (ANOVA) for the comparison among 3 groups,and least significant difference (LSD)-t test for multiple comparisons.Results The expression of miR-373 was significantly lower in the miR-373 inhibitor group (0.120 ± 0.036) than in the untreated group (1.002 ± 0.022) and negative control group (1.037 ± 0.028,LSD-t =36.21,34.83,respectively,both P ＜ 0.001).At 48,72 and 96 hours,the miR-373 inhibitor group showed significantly decreased proliferative activity of A375 cells compared with the untreated group and negative control group (F =10.805,13.720 and 30.907 respectively,P =0.038,0.010 and 0.001 respectively).The proportion of A375 cells in G0/G1 phase was significantly higher in the miR-373 inhibitor group (64.69％ ± 1.18％) than in the untreated group (52.74％ ± 0.66％,t =15.51,P ＜ 0.001) and negative control group (53.80％ ± 0.80％,t =13.24,P ＜ 0.001).The proportion of total apoptotic cells and activity of caspase-3 in the miR-373 inhibitor group were 22.69％ ± 1.24％ and 1.238 ± 0.057 respectively,which were significantly higher than those in the untreated group (9.62％ ± 1.14％,0.413 ± 0.028 respectively,both P ＜ 0.001)and negative control group (9.66％ ± 0.97％,0.437 ± 0.036 respectively,both P ＜ 0.001).Conclusion MiR-373 may play an important role in the regulation of cell cycle and induction of apoptosis of the CSCC cell line A431.

Objective To analyze the distribution and antimicrobial resistance profile of clinical bacterial strains isolated from blood culture in China.Methods Clinical bacterial strains isolated from blood culture from participating hospitals of Blood Bacterial Resistance Investigation Collaborative System (BRICS) during January 2014 to December 2015 were collected.Antibiotic susceptibility tests were conducted with agar dilution or broth dilution methods as recommended by US Clinical and Laboratory Standards Institute(CLSI)2018.The data were analyzed with Whonet 5.6 software.Results During the study period,4 801 clinical bacterial isolates were collected from 26 hospitals,of which 1 798 (37.5％) were Gram-positive bacteria and 3 003 (62.5％) were gram-negative bacteria.The top 10 isolates were Escherichia coli (33.8％),coagulase-negative Staphylococcus (19.0％),Klebsiella pneumoniae (11.9％),Staphylococcus aureus (10.1％),Acinetobacter baumannii (4.0％),Pseudomonas aeruginosa (3.8％),Streptococcus (3.0％),Enterobacter sulcus (2.9％),Enterococcus faecium (2.8％) and Enterococcus faecalis (1.8％).Methicillin-resistant Staphylococcus aureus (MRSA) and methicillinresistant coagulase-negative Staphylococcus (MRCNS) accounted for 33.9％ (165/487) and 56.9％ (520/913) of Staphylococcus aureus and coagulase-negative Staphylococcus respectively.No vancomycinresistant Staphylococcus was detected.The resistance rate of Enterococcus faecium to vancomycin was 0.7％ (1/135),and no vancomycin-resistant Enterococcus faecaliss was detected.The positive rates of extendedspectrum β-1actamases(ESBLs)-producing Escherichia coli,Klebsiella pneumoniae and Proteus were 56.9％ (923/1 621),30.1％ (172/572) and 29.2％ (7/24),respectively.The positive rates of carbapenemresistant Escherichia coli,Klebsiella pneumoniae,Enterobacter,Salmonella and Citrobacter were 1.2％ (20/1 621),7.2％ (41/572),4.3％ (6/141),1.5％ (1/67) and 2.9％ (1/34),respectively.The resistance rates of Acinetobacter baumannii to polymyxin and tegacycline were 2.6％ (5/190) and 8.9％ (17/190)respectively,and that of Pseudomonas aeruginosa to polymyxin and fosfomycin were 1.1％ (2/183)and 0.6％ (1/183),respectively.Conclusions The surveillance results from 2014 to 2015 show that the main pathogens of blood stream infection in China are Gram-negative bacteria,while Escherichia coli is the most common pathogen,the detection rate of MRSA is lower than other surveillance data in the same period in China;carbapenem-resistant Klebsiella pneumoniae and Escherichia coli are at a low level as shown in this surveillance.

Objective To observe the long-term effect,adverse reaction and cosmetic outcome of early-stage breast cancer with hypofractionated whole-breast irradiation (HF-WBI) after breast-conserving surgery.Methods A total of 206 patients with stage 0-Ⅱ breast cancer after breast-conserving surgery were included in Shandong Cancer Hospital Affiliated to Shandong University from May 2014 to August 2017.According to radiotherapy fraction,patients were divided into HF-WBI group and conventional whole-breast irradiation (CF-WBI) group.In HF-WBI group,116 patients received whole-breast radiation to 42.56 Gy in 16 fractions followed by tumor bed boost of 9 Gy in 3 fractions or 10 Gy in 5 fractions.In CF-WBI group,90 patients received whole breast radiation to 50 Gy in 25 fractions followed by tumor bed boost of 10 Gy in 5 fractions.The 2-year local recurrence rate,2-year mortality rate,acute adverse reaction,late adverse reaction and cosmetic outcome of the two groups were analyzed.Results The 2-year local recurrence rates of HF-WBI group and CF-WBI group were 0.86％ (1/116) and 2.22％ (2/90) respectively,and there was no significant difference between the two groups (x2 =0.049,P =0.824).The 2-year mortality rates of the two groups were 0.86％ (1/116) and 0 (0/90) respectively,and there was no significant difference (P ＞ 0.999).There were 108 cases (93.1％) in HF-WBI group and 84 cases (93.3％) in CF-WBI group with grade 0-1 acute dermatitis,and 8 cases (6.9％) and 6 cases (6.7％) with grade 2-3 respectively,with no statistically significant difference (x2 =0.004,P =0.948).There were 97 cases (83.6％) in HF-WBI group and 79 cases (87.8％) in CF-WBI group with grade 0-1 bone marrow suppression,and 19 cases (16.4％)and 11 cases (12.2％) with grade 2-4 respectively,with no statistically significant difference (x2 =0.704,P =0.401).In the two groups,there were 1 case (0.9％) and 3 cases (3.3％) with grade 1-2 radiation pneumonitis,and 115 cases (99.1％) and 87 cases (96.7％) with no radiation pneumonitis respectively,and the difference was not statistically significant (x2 =1.626,P =0.202).There was 1 case (0.9％,1.1％) with grade 1 breast edema in each group,and 115 cases (99.1％) and 89 cases (98.9％) did not occur breast edema,with no statistically significant difference (x2 =0.033,P =0.857).In the late adverse reactions,there were 5 cases (4.3％) and 3 cases (3.3％) with skin pigmentation in HF-WBI group and CF-WBI group respectively.There were 2 cases (1.7％,2.2％) with grade 1 subcutaneous tissue fibrosis in each group,and there were 1 case (0.8％) and 2 cases (2.2％) with grade 1 pulmonary fibrosis respectively.The differences between the two groups were not statistically significant (x2 =0.000,P ＞ 0.999;x2 =0.000,P ＞ 0.999;x2 =0.049,P =0.824).The 6-month,1-year and 2-year cosmetic outcome good rates in HF-WBI and CF-WBI group were 96.5％ (111/115) and 93.3％ (84/90),92.1％ (105/114) and 90.0％ (81/90),91.4％ (53/58) and 87.2％ (41/47) respectively.The differences between the two groups were not statistically significant (x2 =0.526,P =0.468;x2 =0.277,P =0.599;x2 =0.476,P =0.490).The whole course of radiotherapy time in HF-WBI group was 25 days or 29 days,which was significantly shorter than the 40 days of CF-WBI group.Conclusion HF-WBI after breast-conserving surgery has the similar long-term effect,acute and late adverse reaction and cosmetic outcome compared with CF-WBI,and the treatment time is significantly shorter.It can be further promoted as the optimal adjuvant radiotherapy for early-stage breast cancer after breast-conserving surgery.

With the development of various biotechnology,the research on molecular genetics of medicinal plants has gradually deepened. In this paper,the research system of molecular genetics of medicinal plants was proposed for the first time,which was elaborated from the aspects of genetic resources,genome,gene function and research methods. The application fields of medicinal plant mainly contain species identification,molecular breeding and biosynthesis. The research directions of molecular genetics of medicinal plants in genetic resources,model platform,synthetic biology and molecular breeding were put forward,which include 1 000 genome projects of medicinal plants,model species and mutant libraries,gene original libraries of heterologous synthetic systems,construction gene original library and specific chassis cells in heterologous synthesis system of active ingredient,breeding of new varieties of medicinal plants with high active ingredient and high resistance based on molecular markers andtransgenes.
Biotechnology ; Gene Library ; Genetic Markers ; Genome, Plant ; Molecular Biology ; trends ; Plant Breeding ; Plants, Medicinal ; genetics ; Research ; Transgenes

Adult ; China ; Cognitive Dysfunction ; genetics ; Electric Power Supplies ; Female ; Humans ; Male ; Middle Aged ; Occupational Exposure ; adverse effects ; Power Plants ; Receptors, N-Methyl-D-Aspartate ; genetics ; metabolism ; Receptors, Serotonin ; genetics ; metabolism ; Young Adult

OBJECTIVE: To explore long-term following-up clinical effects of lateral closed high tibial osteotomy for the treatment of knee osteoarthritis. METHODS: Twenty patients with medial unicompartmental knee osteoarthritis were treated with lateral closed high tibial osteotomy and screw fixation from June 2005 to December 2015. Among them, including 17 females and 3 males, aged from 43 to 76 years old with an average of (57.80±8.05) years old. VAS score and KSS score were applied to evaluate recovery degree of pain and function before operation and after operation at 1, 5 and 10 years, and postoperative complications were observed. RESULTS: Sixteen patients were followed-up, the time ranged from 9 to 11(10.0±0.8) years, 4 patients were loss to follow-up. Preoperative VAS score was 7.88±1.15 and decreased to 3.19±0.91, 3.44±0.96, 3.69±1.20 at 1, 5 and 10 years after operation, and there were statistical differences in VAS score between before and after operation at different time points (<0.05). Clinical score of KSS increased from 61.94±5.74 before opertaion to 75.50±4.62, 80.13±3.97, 77.38±6.40 at 1, 5 and 10 years after operation, and there were statistical differences in clinical score of KSS between before and after operation at different time points(<0.05); functional score of KSS increased from 62.81±13.03 before operation to 77.50±8.56, 81.88±6.55, 76.88±10.78, and there were statistical differences in functional score of KSS between before and after operation at different time points(<0.05). All incisions healed well without complications such as fibula nerve injury and fracture nonunion. CONCLUSIONS Lateral closed high tibial osteotomy and screw fixation for knee osteoarthritis could receive good clinical results, stop and delay progress of knee osteoarthritis, and long-term following-up could achieve the same effect as total knee arthroplasty.
Adult ; Aged ; Female ; Follow-Up Studies ; Humans ; Knee Joint ; Male ; Middle Aged ; Osteoarthritis, Knee ; surgery ; Osteotomy ; Tibia ; Treatment Outcome

Objective: To understand the consistency of ALK Ventana-D5F3 immunohistochemistry (IHC) interpretation in Chinese lung adenocarcinoma among histopathologists from different hospitals, and to recommend solution for the problems found during the interpretation of ALK IHC in real world, with the aim of the precise selection of patients who can benefit from ALK targeted therapy. Methods: This was a multicenter and retrospective study. A total of 109 lung adenocarcinoma cases with ALK Ventana-D5F3 IHC staining were collected from 31 lung cancer centers in RATICAL research group from January to June in 2018. All cases were scanned into digital imaging with Ventana iSCANcoreo Digital Slide Scanning System and scored by 31 histopathologists from different centers according to ALK binary (positive or negative) interpretation based on its manufacturer′s protocol. The cases with high inconsistency rate were further analyzed using FISH/RT-PCR/NGS. Results: There were 49 ALK positive cases and 60 ALK negative cases, confirmed by re-evaluation by the specialist panel. Two cases (No. 2302 and No.2701) scored as positive by local hospitals were rescored as negative, and were confirmed to be negative by RT-PCR/FISH/NGS. The false interpretation rate of these two cases was 58.1% (18/31) and 48.4% (15/31), respectively. Six out of 31 (19.4%) pathologists got 100% accuracy. The minimum consistency between every two pathologists was 75.8%.At least one pathologist gave negative judgement (false negative) or positive judgement (false positive) in the 49 positive or 60 negative cases, accounted for 26.5% (13/49), 41.7% (25/60), respectively, with at least one uncertainty interpretation accounted for 31.2% (34/109). Conclusion There are certain heterogeneities and misclassifications in the real world interpretation of ALK-D5F3 IHC test, which need to be guided by the oncoming expert consensus based on the real world data.

Objective: To investigate the relationship between hemoglobin levels and prognosis of cerebral infarction in elderly patients aged 75 years and over. Methods: A retrospective analysis of 238 elderly patients (≥75 years old) with cerebral infarction admitted into our hospital from January 2016 to June 2018 was performed. The age, gender, serum creatinine and risk factors for stroke (hypertension, diabetes, dyslipidemia, homocysteine, atrial fibrillation, smoking, drinking), coronary heart disease, previous stroke history, tumor history, National Institutes of Health Stroke Scale (NIHSS) score, hemoglobin, hematocrit and other basic data were recorded. The patients were divided into the group with good prognosis (mRS score ≤ 2) and the group with poor prognosis (mRS score > 2). The relationship between hemoglobin levels and the prognosis of cerebral infarction in elderly patients were analyzed. Results: After 6 months of follow-up, 124 (52.1%, 124/238) stroke patients had a good prognosis, and 114 (47.9%, 114/238) patients had a poor prognosis, including 21 deaths. Anemia at admission (OR=2.433, 95%CI: 1.213-4.591, P=0.011), new-onset anemia after hospitalization (OR=2.615, 95%CI: 1.333-6.521, P=0.043) and the low level of minimum hemoglobin during hospitalization (OR=0.847, 95%CI: 0.671-0.971, P=0.038) were independent risk factors for poor prognosis in elderly stroke patients aged ≥75 years. New-onset anemia after hospitalization (OR=1.015, 95%CI: 1.002-1.027, P=0.022), the low level of minimum hemoglobin during hospitalization (OR=0.801, 95%CI: 0.654-0.981, P=0.027), the decrement of hemoglobin ≥20 g/L (OR=1.342, 95%CI: 1.011-1.763, P=0.000) at reexamination were independent risk factors for the mortality in elderly patients with cerebral infarction. Conclusions Anemia at admission, new-onset anemia after hospitalization, and the low level of minimum hemoglobin during hospitalization are independent predictors for poor prognosis in cerebral infarction patients aged ≥75 years. The decrement of hemoglobin ≥20 g/L after admission is an independent predictor for high mortality in elderly patients with cerebral infarction.

Objective To investigate the relationship between ischemia-modified albumin (IMA) and coronary artery stenosis in patients without myocardial infarction.Methods For this study we consecutively enrolled 345 patients who received coronary angiography (CAG).According to the results,the subjects were divided into coronary stenosis group (232 cases)and control group (113 cases)to investigate the the relationship of IMA and IMA/albumin (IMAr)with coronary stenosis.Results ① The levels of IMA and IMAr in coronary stenosis group were higher than those in control group (P＜0.001).② The IMA and IMAr were higher in single-branch and multi-branch lesion groups than in control group (P＜0.05),whereas there was no significant difference between single-branch lesion group and multi-branch lesion group (P＞0.05).③ In receiver operating characteristics curve analysis,the sensitivity of IMA and IMAr was 64.4% and 78.0%,respectively (AUC:0.653,0.705,P＜0.001)in predicting coronary stenosis.④ Multivariate logistic regression analysis showed that IMAr was an independent risk factor for coronary stenosis in patients without myocardial infarction (OR=73.05,P＜0.001).Conclusion IMA and IMAr are closely correlated with coronary stenosis and have a value in predicting coronary artery stenosis in patients without myocardial infarction.