Objective To establish loop-mediated isothermal amplification(LAMP)method for detecting Streptococcus pneumoniae in clinical samples.Methods Four Streptococcus pneumoniae-specific LAMP primers were designed according to the published sequence of strain R6(GenBank accession number AE008540).Genomie DNA in positive blood cultures was extracted by nanidine hydrochloride and benzene-methanol.Then lytA was amplified by LAMP at 63℃ for 45 minutes.We observed the turbidity in thereaction tube.For further confirmation.The amplified products were also detected using electrophoresis in 2% agarose gels,followed by ethidium bromide staining.Resuits 16 strains of Streptococcus pneumoniae were detected in 196 positive blood cuhure bottles by LAMP.Compared with traditional method.It8 sensitivity and specificity were both 100%and the detection could be finished in an hour.The assay had a minimum detection limit of 102 CFU/m1.Conclusions This IJAMP-based assay is simple,rapid.Sensitive and specific.It can be used to detect trept OCOCCUS pneumoniae in clinical samples.

OBJECTIVE: To observe the influence of the change of cervical curvature on the nerve root and the vertebral artery of the patients with cervical spondylosis and the curative effect of therapeutic manipulations. METHODS: Sixty cases of cervical spondylosis with the change of cervical curvature, 60 cases of cervical spondylosis without the change of cervical curvature and 60 normal people were chosen. They were clinically observed and the cervical spondylosis was treated by manipulations and the data was processed according to the principle of statistics. RESULTS: The change of cervical curvature affected the nerve root and the vertebral artery and therapeutic manipulations produced a satisfactory curative effect. CONCLUSION: Cervical spondylosis with change of cervical curvature has special characteristics in the etiology, course and state of the disease. The change of cervical curvature produces an effect on the nerve root and the vertebral artery. Selected therapeutic manipulations produce a better curative effect.

Aim To investigate the protective effect of cinnamic aldehyde ( CA ) on hormone-induced osteo-clasts proliferation and bone resorption in vitro and its molecular mechanisms. Methods RAW264. 7 cells induced into osteoclast were treated with RANKL and M-CSF and then were divided into control group, dexa-methasone ( DEX ) group and different doses of CA (11. 6, 23. 2, 46. 4 μg·L-1 ) groups. OCs were ob-served after tartrate resistant acid phosphatase( TRAP) staining. The cell proliferation was determined by MTT assay at different time points. The expression levels of TRACP5 b in cell cultured supernatants were measured by ELISA. RT-PCR technique was applied to examine the transcriptional levels of RANK and NFATc1 . Re-sults In MTT assay, the proliferation of osteoclasts stimulated by dexamethasone was promoted seriously compared with negative control group ( P < 0. 05 ) . Meanwhile, DEX could strengthen the content of TRACP5 b and up-regulate the expressions of RANK and NFATc1 mRNA. After administration of CA, the proliferation was inhibited, while the enhanced expres-sion of TRAP5b was reversed,and the over-expressions of RANK and NFATc1 mRNA were obviously down-regulated in a time-and-dose-dependent manner ( P <0. 05 ) . Conclusion The results suggest that CA in-hibits proliferation and bone resorption of osteoclast in-duced by DEX, which may be mediated by down-regu-lation of RANK and NFATc1 mRNA.

Objective:To demonstrate the relationship between the Th 1/Th2/Th17/Treg paradigm and the bone loss induced by estrogen deficiency and looking for potential target for clinical treatment.Methods:30 BALB/c mice were divided randomly into the normal control group , the sham operation group , and the ovariectomy group.The serum estradiol ( E2 ) was assessed by ELISA.Bone mineral density (BMD) of thigh bone was measured with dual energy X ray absorptiometry.Meanwhile,the T-cell subsets (Th1:CD4+TNFα+, Th2: CD4+IL-4+, Th17: CD4+IL-17 A+, Treg: CD4+CD25+Foxp3+) in spleen lymphocytes were analyzed by flow cytometry.Results:Compared with the normal group and the sham operation group , both E2 and BMD in the ovariectomy group decreased significantly ( P<0.05 ).The percentage of Th 1 and Th17 subset increased while the percentage of Th 2 and Treg decreased significantly in ovariectomy mice compared with sham operation mice.Correlation analysis showed that BMD was positively related to E 2 level and the percentage of Th 2 and Treg subset;however ,BMD was negatively related to the percentage of Th 1 and Th17 subset ( P<0.05 ).Conclusion: Conclusion: T-cell paradigm was involved in the bone loss induced by estrogen deficiency.Modifying T-cell paradigm may become a potential target for reducing bone loss induced by estrogen deficiency .

Objective To investigate the expression of liver cancer stem cells(LCSCs) biomarkers and tumour angiogenesis in patients with hepatocellular carcinoma (HCC) and its clinical significance.Methods Immunohistochemistry was used to detect the expression of CD90,CD133 and CD34 in tumor tissues from 61 patients with HCC undergoing curative hepatectomy.Results The positive rates of CD90and CD133 in HCC tissues were 29.5％ (18/61)and 31.1％ (19/61),the positive rates of CD90 and/or CD133 in HCC were 45.9％ (28/61).The positive rate of LCSCs biomarkers in patients with vascular invasion,tumor differentiation Ⅲ/Ⅳ,non-complete encapsulation,and TNM stage Ⅲ/Ⅳ was significantly higher than those with non-vascular invasion,tumor differentiation Ⅰ / Ⅱ,with complete encapsulation,and TNM stage Ⅰ/Ⅱ.There were a significant positive correlation between LCSCs biomarkers expression and MVD(r =0.5,P ＜ 0.05).As compared with negative LCSCs expression and MVD low group,patients with a positive LCSCs biomarkers expression and MVD high in tumours had significantly lower overall survival (OS) and poor relapse-free survival (RFS).Conclusions High expression levels of LCSCs biomarkers are related to markers of angiogenesis microvessel density (MVD).By combining two of those we can classify paitients and anticipate the prognosis after surgery.

Objective To compare postoperative three-dimensional conformal radiotherapy (3DCRT) and conventional radiotherapy (CR) in patients with non-small-cell lung cancer (NSCLC). Methods From Nov. 2002 to Mar. 2006,162 patients with stage ⅠB～ⅢB NSCLC receiving postoperative radiotherapy in our department were restrospetcively analyzed. Among them,86 received 3DCRT and 76 re-ceived CR. The survival outcome, pattern of failure and treatment-related side effects in both groups were an-alyzed. Results The median follow-up was 29.4 months in the 3DCRT group and 24 months in the CR group. The 1-,2- and 3-year local-regional free survival was 97.5% ,83.2% and 83.2% in 3DCRT group, and 84.3% ,76.0% and 65.6% in CR group(χ2= 5.46, P = 0.019), respectively. No statistically signifi-cant difference was found in the overall survival, disease-free survival or distant metastasis-free survival be-tween the two groups. The local-regional failure rate was statistically different between the two groups (14.5% vs 33.3% ,χ2 =7.70,P =0.006). The incidence of distant metastasis in the two groups was simi-lar. Radiation pneumonitis of NCI CTC grade 2-3 occurred in 10 patients(11.6%)in 3DCRT group and 18 (23.7%) in CR group,which was statistically different(χ2 =4.10,P=0.043). Conclusions Postopera-tive 3DCRT for NSCLC provides a better local-regional control and lower incidence of radiation pneumonitis compared with CR.

Objective: To investigate knowledge, attitude and behavior related to tuberculosis prevention among primary and elementary school students in Heilongjiang province, and to provide evidence for school-based tuberculosis prevention and control. Methods: A cross-sectional survey method was used to conduct a questionnaire survey among 3 033 middle and elementary school students in 10 counties (districts) of Heilongjiang province, including knowledge, attitudes and behaviors related to tuberculosis prevention and treatment. Results: In the survey, 61.5% of the students understand the core information of tuberculosis. The core knowledge awareness rate was higher in primary school students (64.8%) than in middle school students(58.1%)(χ2=85.41，P<0.05). Primary and middle school students indicated that the attitude-taking rate of concerns about the tuberculosis patients was 47.5%. Primary school students had more general attitude than middle school students towards willingness to participate in publicity activities compared with primary school students(χ2=39.26，P<0.05). About 85% of students reported personal hygiene habits. The results of multiple linear regression analysis showed that tuberculosis-related knowledge was mainly associated with factors including urban and rural, parental education, health education courses in school(P<0.05). Conclusion There is a gap in tuberculosis-related knowledge among primary and middle school students between Heilongjiang province and national level. There’s a need for the improvement of tuberculosis control programs to inform a better understanding and social dissemination of TB information.

Objective:The related literatures of ankylosing spondylitis in recent 10 years were visually analyzed by bibliometrics to explore the research hotspots and trends in this field.Methods:The Web of Science core collection database was used as the data source to retrieve relevant literatures on ankylosing spondylitis included from 2012 to 2021, and CiteSpace 5.8.R3 software was used to conduct keywords analysis of co-occurrence, burst, clustering and timeline, co-citation and burst analysis of references, and draw visual knowledge maps.Results:A total of 8 684 papers were included, and the overall number of publications showed a steady trend of increase, nearly doubled in the past 10 years. Thirteen papers with high academic influence were analyzed. Keywords such as pathogenesis, impact factors, epidemiology, treatment progression, and quality of life were hot research topics in recent years.Conclusion:In this study, through visual analysis of the literature in the field of ankylosing spondylitis research, it is found that secukinumab and ustekinomab are the future research hotspots and trends in this field.

Lung cancer displays the highest morbidity and mortality worldwide. Non-small cell lung cancer (NSCLC) is the most com-mon type of lung cancer. In-depth research was performed on the pathogenesis and biological behavior of lung cancer and the im-provement of genetic testing level. The discovery of drugs targeting epidermal growth factor receptor and anaplastic lymphoma kinase plays a significant role in individual treatment of advanced NSCLC. BIM is a protein in the Bcl-2 family that promotes apoptosis, which leads to cell death. The BIM expression level and polymorphism can influence the therapeutic effect of targeted therapy and chemo-therapy on advanced NSCLC. Therefore, this review summarizes BIM and its effects on targeted therapy and chemotherapy for ad-vanced NSCLC.

Objective:To analyze the medication rule of treating orthopedics in Tibetan Medicine by data mining, in order to summarize the characteristics and theory of ethnic minorities medicine for treating orthopedics and traumatology.Methods:By collecting the treatment methods of orthopedics and traumatologic diseases in books of Chinese Materia Medica·Tibetan Medicine Volume and Chinese Medical Encyclopedia·Tibetan Medicine to analyze the frequency, cluster and association rules of Tibetan Medicines by using Office Excel 2019, IBM SPSS Statistics 26.0 and IBM SPSS modeler 14.1 respectively. Results:Among the 202 Tibetan Medicine prescriptions of Orthopedic Department, 338 belongs to Chinese medicines. The top 3 Chinese medicines that are frequently appeared are Chebulae Fructus, Inula racemosa Hook.f, and Carthami Flos. The properties of those medicines are mainly cold, warm and cool, and the tastes are mainly pungent, bitter and sweet; the meridians mainly belong to liver, lung, stomach and spleen; The priscriptions mainly cover four kinds of diseases: trauma, arthralgia syndrome, lumbosacral tendon injury, chest and back tendon injury. The four kinds of cluster combinations were obtained. The core Chinese medicines were Chebulae Fructus, Terminaliae Belliricae Fructus, Phyllanthi Fructus, Cassiae Semen, Olibanum, Abelmoschus moschatus, and the common medicine pair were Chebulae Fructus- Terminaliae Belliricae Fructus, Abelmoschus moschatus- Cassiae Semen, Olibanum- Abelmoschus moschatus and so on. Conclusions:Tibetan Medicines treat orthopedics and traumatological diseases with antipyretic medicines as the main yellow water, followed by blood activating, Qi regulating and wind dampness removing medicines. With Sanguo Decoction and Sanhuang water of Tibetan medicine as the core, they are often combined with other antipyretic and blood cooling medicines and bone connecting medicines. Tibetan Medicine pays attention to the application of dry yellow water theory, which reflects the role of the core theory of Qingxie method and yellow water theory of Tibetan Medicine in the diagnosis and treatment of orthopedic and traumatologic diseases.