Breast cancer has become the malignant tumor with the highest incidence rate among women, of which human epidermal growth factor receptor 2 (HER2) positive breast cancer accounts for about 15%-20%. With the development of anti HER2 targeted drugs, the survival and prognosis of HER2 positive breast cancer has significantly benefited. About 45%-55% of breast cancer patients have low HER2 expression, and these patients usually do not receive anti HER2 treatment. However, there is a significant difference between the biological behavior and prognosis of breast cancer with low HER2 expression and breast cancer with zero HER2 expression. It is helpful to differentiate and adopt corresponding treatment strategies to improve the prognosis of patients. At present, there have been many advances in targeted therapy of breast cancer with low HER2 expression, which provides a useful reference for precision treatment of breast cancer with low HER2 expression.

Objective:To explore the application of scenario simulation and rapid film reading training in the standardization of cervical vertebra DR examination in radiology department.Methods:Using the method of scene simulation in the examination room to take DR films of cervical vertebra, two senior technicians in charge evaluated and guided the deficiencies of junior technicians from the aspects of patient check, exposure conditions, body position placement, film printing, inspection safety and radiation protection. Every morning, DR images of cervical vertebra were randomly selected and read quickly, and the junior technicians should quickly browse the images within one minute and make quality control evaluation. Then the senior technician in charge pointed out the shortcomings of the evaluation and related improvement methods. After that, the technical specification manual of cervical vertebra DR was compiled based on the deficiencies and problems found by each technician, and 200 patients aged 18-55 years, without abnormal movement and no internal fixation before and after the establishment of standardization were randomly selected in group A (before standardization) and group B (after standardization). The image quality and repetition projection rate of group A and group B before and after the standardization were compared. SPSS 25.0 was used to analyze the data.Results:The image quality score of group B (8.83±0.33) was higher than that of group A (8.45±0.30), and the repetition projection rate of group B (2%) was lower than that of group A (9%), with statistical significance ( P<0.05). Conclusion:Through the training mode of rapid film reading and scenario simulation, the standardization of cervical vertebra DR examination technology suitable for the situation of the department has been established, which effectively solves the problem of abstraction in the technical teaching of radiology department. The standardization establishment plays an important role in standardized training, for which, the technicians can quickly grasp the work process of the department and the corresponding examination technology during participating in the standardization establishment and training process.

Objective:To quantify the kinematic changes in the gait cycle among youths with chronic, nonspecific low back pain (CNLBP).Methods:A Qualisys 3D optical motion capture system was used to document the gait kinematics of 11 youths with CNLBP and 11 healthy counterparts. Gait profile scores and movement analysis profiles were then calculated.Results:The young CNLBP subjects exhibited gait abnormalities, as reflected by the significant difference of the gait variable the range of motion of the dominant knee between the CNLBP and healthy groups [(5.66±1.83)° vs (3.64±1.13)°]. Gait profile scores and movement analysis profiles are applicable to evaluating them.Conclusions:There manifested gait abnormalities in youth CNLBP patients. Gait profile scores and movement analysis profiles are applicable to evaluating them.

Liver metastasis is the most common cause of death for patients with colorectal cancer.Surgical resection is the first choice for colorectal cancer liver metastasis (CRLMs),but only 10％-25％ of them are resectable.Patients with unresectable CRLMs are usually treated with systemic chemotherapy and/or local ablative therapies as alternative options.The safety and efficiency of thermal ablation therapies have been improved in recent years.The 5-year survival rate of patients underwent thermal ablation is higher than that of patients underwent chemotherapy for treating CRLMs.A consensus for thermal ablation of colorectal liver metastasis was provided by international experts panel on 2013.The recommendations and indications of thermal ablation for CRLMs were considered and documented according to the literature review based on radiofrequency ablation with long-term follow-up.The main content of the consensus from international experts for thermal ablation of colorectal liver metastasis were reviewed in this article.

OBJECTIVETo assess the association of polymorphisms of N-acyl-phosphatidylethanolamine-phospholipase D (DAPE-PLD) and fatty acid amide hydrolase (FAAH) genes, as well as their interaction, with schizophrenia.

METHODSPolymorphisms of NAPE-PLD rs12540583 and FAAH rs324420, rs2295633, and rs6429600 were determined with PCR - restriction fragment length polymorphism assay and Sanger sequencing. The genotypes of 345 subjects of Han Chinese origin diagnosed with schizophrenia and a 403 controls were compared. The results were analyzed with SPSS 17.0, and the interaction of the two genes was analyzed using a multifactor dimensionality reduction (MDR) method.

RESULTSThe frequency of NAPE-PLD rs12540583 polymorphism was significantly different between the two groups under both dominant and additive models (χ2=17.18 vs. χ2=18.94, P<0.0125). The frequencies of AC genotype and C allele of the patient group at rs12540583 were higher than those of the controls, and the interaction of NAPE-PLD and FAAH was associated with schizophrenia. A four-loci model (rs12540583, rs324420, rs2295633 and rs6429600) can best model the interaction between NAPE-PLD and FAAH.

CONCLUSIONThe AC genotype and C allele of NAPE-PLD rs12540583 locus are risk factors for schizophrenia, and the interaction between NAPE-PLD rs12540583 and FAAH rs324420, rs2295633 and rs6429600 is associated with schizophrenia.

Adult ; Amidohydrolases ; genetics ; Asian Continental Ancestry Group ; genetics ; China ; ethnology ; Female ; Genotype ; Humans ; Male ; Middle Aged ; Phospholipase D ; genetics ; Polymorphism, Genetic ; Schizophrenia ; genetics

Objective To investigate the immediate effects of lower limb with open chain weight-adding on joint position sense and gait symmetry in stroke patients. Methods From January, 2016 to January, 2017, 39 stroke patients were included. Their joint position sense and gait symmetry were compared before and after weight-adding. The joint position senses of active reproduction of active positioning (ARAP) and passive reproduction of passive positioning (PRPP) were assessed during lower limb straight leg raise. The gait symmetry was also as-sessed and three indexes were recorded including the symmetry of foot rotation angle, step length and percentage of single leg support phase. Results After weight-adding, the position sense of PRPP did not improve (t=0.832, P=0.832), nor of the symmetry of foot rotation an-gle (t=-0.704, P=0.483) and percentage of single leg support phase (t=0.381, P=0.702);the position sense of ARAP improved (t=3.158, P=0.011), as well as the symmetry of step length (t=2.022, P=0.041). Conclusion The lower limb with open chain weight-adding could im-prove the active joint position sense and symmetry of step length.

Objective To investigate the influence of probiotics assisted with routine antibiotic regimens on the short-term clinical efficacy,mucosal barrier function and inflammatory response of patients with bacterial peritonitis secondary to liver cirrhosis.Methods 60 patients with bacterial peritonitis secondary to liver cirrhosis were chosen,and they were randomly divided into two groups according to the digital table,each group in 30 cases.The control group received routine antibiotic regimens alone,and the observation group were given probiotics on the basis of the control group.The short-term clinical efficacy,the levels of DAO,D-Lac and ET before and after treatment of the two groups were compared.Results The short-term effective rates of the control group and observation group were 70.00％,96.67％,respectively.The short-term effective rate of the observation group was significantly higher than that of control group(x2 =9.14,P ＜0.05).After treatment,the levels of DAO of the control group and observation group were (4.33 ± 0.79) U/mL,(2.19 ± 0.47) U/mL,respectively.The levels of D-Lac of the control group and observation group after treatment were (15.88 ± 1.95) U/mL,(8.57 ± 1.03) U/mL,respectively.The levels of DAO and D-Lac of the observation group after treatment were significantly lower than those of the control group and before treatment(t =2.78,3.06;3.44,3.78,3.61,4.10,all P ＜ 0.05).The levels of ET of the control group and observation group after treatment were (0.09 ± 0.02) EU/mL,(0.04 ± 0.01) EU/mL,respectively.The level of ET of the observation group after treatment was significantly lower than that of the control group and before treatment(t =2.49,3.01,3.46,all P ＜ 0.05).Conclusion Probiotics assisted with routine antibiotic regimens in the treatment of patients with bacterial peritonitis secondary to liver cirrhosis can effectively relieve the symptoms and signs,improve the mucosal barrier function and is helpful to reduce the inflammatory response.

Objective To analyze the IgG variances between workmen and workwomen in x-ray room,and to provide reference for the assessment of staff in the department of radiology.Methods The staff in the department of radiology who recieved health examination from Janurary 2012 to Janurary 2016 were divided into the male group and the female group.The health examination data of 75 staff in each group were slected and the basic immunization level of the two groups were tested.And then compared the the IgG variances between the two groups.The analysis were conducted by two means of grouping,namely the working age of staff (less than 10 years,between 10 and 20 years, and over 20 years)and the age of staff (aged 21 to 30,aged 31 to 50,aged 51 to 78).Results The level of IgG in the female group were higher than that in the male group when their working age were less than 10 years,and the difference was significant (P <0.05).Both in the male group and the female group,the level of IgG in staff aged 31 to 50 were lower than the others,and the difference was significant (P <0.05).Conclusion The level of IgG in female staff were higher than that in the male staff in different age stages,and it increased with the increase of working age.To analyze the IgG variances of staff the in x-ray room could provide reference for assessment of physiclal status.

A rapid and accurate determination method of lipids in microalgae plays a significant role in an efficient breeding process for high-lipid production of microalgae. Using low field nuclear magnetic resonance (LF-NMR), we developed a direct quantitative method for cellular lipids in Chlorella protothecoides cells. The LF-NMR signal had a linear relationship with the lipid content in the microalgae cells for both dry cell samples and algal broth samples (R2 > 0.99). These results indicated that we could use this method for accurate determination of microalgal lipids. Although LF-NMR is a rapid and easy lipid determination method in comparison to conventional methods, low efficiency would limit its application in high throughput screening. Therefore, we developed a novel combined high throughput screening method for high-lipid content mutants of C. protothecoides. Namely, we initially applied Nile red staining method for semi-quantification of lipid in the pre-screening process, and following with LF-NMR method for accurate lipid determination in re-screening process. Finally, we adopted this novel screening method in the breeding process of high-lipid content heterotrophic cells of C. protothecoides. From 3 098 mutated strains 108 high-lipid content strains were selected through pre-screening process, and then 9 mutants with high-lipid production were obtained in the re-screening process. In a consequence, with heterotrophical cultivation of 168 h, the lipid concentration could reach 5 g/L, and the highest lipid content exceeded 20% (W/W), which was almost two-fold to that of the wild strain. All these results demonstrated that the novel breeding process was reliable and feasible for improving the screening efficiency.
Chlorophyta ; chemistry ; Heterotrophic Processes ; High-Throughput Screening Assays ; Lipids ; analysis ; Magnetic Resonance Spectroscopy ; Microalgae ; chemistry ; Staining and Labeling

[Objective] To investigate the association between -31C/G polymorphism in the promoter of survivin gene and the susceptibility to sporadic colorectal cancer in southern Chinese population. [Methods] Survivin-31C/G genotypes were determined by polymerase chain reaction-restriction fragment length polymorpbism (PCR-RFLP) in 711 healthy controls and 702 CRC cases. [Results] The number of CRC patients carrying with CC genotype was much higher than those of controls (36.5 % vs. 26.12%, X~2=17.89, P<0.001). Compared with CC genotypes, CG, GG genotypes and G allele carriers had a significantly decreased risk of CRC, with the decrease being 0.61-fold (95% CI=0.46-0.81, P<0.001), 0.52-fold (95% CI=0.38-0.71, P<0.001) and 0.58-fold (95% CI=0.45-0.74, P<0.001), respectively. [Conclusion] Survivin gene -31C/G polymorphism is associated with sporadic CRC risk, the G variant genotypo is the independent protective factors against sporadic CRC in soutbem Chinese population.