1.The economic effects of rural residents' health in China: Empirical analysis based on endogeneity
Chinese Journal of Health Policy 2017;10(4):71-76
As a sort of human capital, health is a concrete manifestation of human productivity.At home and abroad, there are many empirical studies focusing on the economic effects of health that have been conducted, but the research methods have not paid enough attention to the endogeneity of health in those studies.This paper evaluates the effects of health on the income of rural residents in China with the micro panel data from China Health and Nutrition Survey.To get reliable results, the paper controls the endogenity of health by using simultaneous equation model and solves the parameters by using the three-stage least squares method.The study found that health has significantly positive effects on the income of rural residents in China, a conclusion which is in conformity with the economic effects of health.To improve the health of rural residents and fully implement the economic effects of health, the study recommends the government to put more efforts on promoting healthcare services, health-related education, and improving the living standards of rural residents in China.
2.Research progress of non-receptor tyrosine kinase signal transducer and activator of transcription as a new target in colon cancer
Cancer Research and Clinic 2016;28(2):129-132
Malignant colon cells require angiogenesis and optimal tumor microenvironment for proliferation, invasion and metastasis. The non-receptor tyrosine kinase signal transducer and activator of transcription (JAK-STAT) pathway are involved in multiple processes, including chronic inflammation-associated tumorigenesis, cancer proliferation, tumor angiogenesis, immune evasion and facilitating tumor metastasis, making JAK-STAT a new target in molecular target therapy. In this review, advances on JAK-STAT pathway as a new target in colon tumorigenesis are updated, and a preliminary estimation of JAK-STAT in prognosis and target therapy will be mentioned to show a potential future of JAK-STAT in colon cancer.
3.Research on ECG de-noising method based on ensemble empirical mode decomposition and wavelet transform using improved threshold function.
Linlin YE ; Dan YANG ; Xu WANG
Journal of Biomedical Engineering 2014;31(3):567-571
A de-noising method for electrocardiogram (ECG) based on ensemble empirical mode decomposition (EEMD) and wavelet threshold de-noising theory is proposed in our school. We decomposed noised ECG signals with the proposed method using the EEMD and calculated a series of intrinsic mode functions (IMFs). Then we selected IMFs and reconstructed them to realize the de-noising for ECG. The processed ECG signals were filtered again with wavelet transform using improved threshold function. In the experiments, MIT-BIH ECG database was used for evaluating the performance of the proposed method, contrasting with de-noising method based on EEMD and wavelet transform with improved threshold function alone in parameters of signal to noise ratio (SNR) and mean square error (MSE). The results showed that the ECG waveforms de-noised with the proposed method were smooth and the amplitudes of ECG features did not attenuate. In conclusion, the method discussed in this paper can realize the ECG denoising and meanwhile keep the characteristics of original ECG signal.
Algorithms
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Electrocardiography
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Humans
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Signal Processing, Computer-Assisted
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Wavelet Analysis
4.Study on the Weights Calculation Methodology of Constituted Factors of Medical Service Price Project in 2012 Edition
Xianzhong LU ; Mengya XU ; Linlin TAN
Chinese Health Economics 2013;(9):42-44
Objective: To develop price framework of medical service price project and introduce the weights calculation method of the new edition medical service price project. Methods: According to the new instruction manuals of medical service price and the research of the resource costs based on the relative value(RBRVS)of the U.S. Health Care Financing Administration (HCFA) and the American Medical Association ( AMA ) , an analysis framework and dimension of medical service price was raised and authoritative international medical service project price methods w ere summarized. Results: Based on the percentages of constituted factors and the professional features, it found the weights calculation model could be constructed with the weights model, and it could calculate the weights of the elements. Conclusion: Medical service price can be measured and comprehensively researched from the different dimensions of the medical service price, so as to carry out the pricing work of medical service price project and provide better service for pharmaceutical reform.
5.Effect of naringenin on KIM-1 expression in rats with renal interstitial fibrosis caused by unilateral ureteral obstruction
Linlin CHEN ; Xiaoli JIAN ; Xihong XU
International Journal of Laboratory Medicine 2014;(11):1384-1386
Objective To evaluate the effect of naringenin on KIM-1 expression in rats with renal interstitial fibrosis caused by unilateral ureteral obstruction(UUO).Methods 24 SD male rats were randomly divided into Sham group,UUO group and naringe-nin group(Nar group),respectively.Rats in UUO group and Nar group got UUO to establish renal interstitial fibrosis models. Rats in Sham group only free but not ligated and cut ureters.Rats were administered saline and naringenin 25 mg/(kg·d)for 14 days.Then,24 h urine samples were collected before the rats were killed,and KIM-1 in these samples were measured by ELISA. Specimens were obtained from obstructive renal,the pathological change of renal tubule and interstitial were observe by HE and Masson staining.Moreover,the tubulointerstitial damage index was scored and the expression of KIM-1 in renal tissue was examined by immunohistochemical staining.Results Compared with Sham group,the tubulointerstitial damage index of UUO group significantly increased(P <0.05),contents of KIM-1 in urine and renal tissues also significantly increased(P <0.05).Com-pared with UUO group,the tubulointerstitial damage index score of Nar group alleviated(P <0.01),contents of KIM-1 in urine and renal tissues also reduced(P <0.05 ).Correlation analysis showed that there was positive correlation between KIM-1 in urine and renal tissues and TDI(r=0.862,0.866,P <0.01).Conclusion Naringenin can relieve renal interstitial fibrosis and reduce the content of KIM-1.
6.Comparison of anesthesia with target-controlled infusion of propofol-remifentanil/ fentanyl versus isoflurane
Zhiyu GENG ; Linlin SONG ; Xing XU
Chinese Journal of Anesthesiology 1994;0(01):-
Objective To compare the induction of and emergence from anesthesia with target-controlled infusion (TCI) of propofol-remifentanil/fentanyl and isoflurane inhalation. Methods Sixty ASA Ⅰ -Ⅱ patients (26 male, 34 female) aged
7.De-noising method research of ballistocardiogram signal.
Dan YANG ; Bin XU ; Linlin YE ; Jingjing JIN
Journal of Biomedical Engineering 2014;31(6):1368-1372
Ballistocardiogram (BCG) signal is a physiological signal, reflecting heart mechanical status. It can be measured without any electrodes touching subject's body surface and can realize physiological monitoring ubiquitously. However, BCG signal is so weak that it would often be interferred by superimposed noises. For measuring BCG signal effectively, we proposed an approach using joint time-frequency distribution and empirical mode decomposition (EMD) for BCG signal denoising. We set up an adaptive optimal kernel for BCG signal and extracted BCG signals components using it. Then we de-noised the BCG signal by combing empirical mode decomposition with it. Simulation results showed that the proposed method overcome the shortcomings of empirical mode decomposition for the signals with identical frequency content at different times, realized the filtering for BCG signal and also reconstructed the characteristics of BCG.
Algorithms
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Ballistocardiography
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methods
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Humans
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Monitoring, Physiologic
8.Clinical observation on cetuximab(C225) with FOLFOX4 in the treatment of metastatic colorectal cancer
Xiaohui XU ; Rui MA ; Linlin LI ; Bin LIU
Cancer Research and Clinic 2009;21(10):695-696
Objective To evaluate the efficacy and safety of cetuximab(C225) with FOLFOX4 in the treatment of metastatic colorectal cancer (mCRC). Methods 68 patients with mCRC diagnosed by pathology were randomized in two groups: cetuximab combination with FOLFOX4 chemotherapy (combined group) and FOLFOX4 chemotherapy only (control group). Results The overall response rates (RR=CR+PR)in the combined group and the control group were 57.6 % and 32.3 % with significant difference (P <0.05). Grade Ⅲ/Ⅳ toxicity were myelosuppression(27.3 % and 32.4 %, P >0.05), nausea and vomiting(12.1% and 27.7 %, P >0.05), acne-like rash (only in combined group 9.1%). Conclusion The combination of cetuximab and chemotherapy can improve treatment efficacy. Except for rash, other grade Ⅲ/Ⅳ toxicity has no difference between the two groups.
9.Determination of Influenza Virus H5N1 and H7N9 Using MASA Technology.
Jing YUAN ; Linlin BAO ; Qiang WEI ; Chuan QIN ; Lili XU
Chinese Journal of Virology 2015;31(6):607-614
To set up a new rapid method for the rapid determination of influenza virus H5N1 and H7N9 basing on the Multi-Analyte Suspension Array (MASA) technology. Sequence analysis and design of degenerate primers and specific probes were set in the comparison and analysis of H5, N1, H7 and N9 genes. In combination with MASA technology, these primers and probes were used for the determination of samples of H5N1 and H7N9 and other subtypes ( H1N1, PH1N1, H5N2, H3N2 and H9N2). We developed a rapid determination method. This method had high specificity and sensitivity that could detect H5N1 and H7N9 at one time, and could detect samples that containing 10 copies of H5N1 and H7N9. This determination method could be used for rapid determination of influenza virus H5N1 and H7N9 at one time.
Humans
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Influenza A Virus, H5N1 Subtype
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classification
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genetics
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isolation & purification
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Influenza A Virus, H7N9 Subtype
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classification
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genetics
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isolation & purification
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Influenza, Human
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virology
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Oligonucleotide Array Sequence Analysis
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methods
10.Real-time PCR Detection Method for the Reston Subtype of the Ebola Virus.
Lili XU ; Linlin BAO ; Songzhi GU ; Chuan QIN
Chinese Journal of Virology 2015;31(3):276-281
We aimed to develop a real-time polymerase chain reaction (PCR) detection method for the Reston subtype of the Ebola virus. The NP gene of the Reston subtype of the Ebola virus was selected as the detection object. Sequences of different subtypes of Ebola viruses were aligned using Clustal W software. The most unique and conserved regions of the Reston subtype of the Ebola virus were recruited as candidate sequences for specific primers. Primer Express and Primer Premier 5. 0 software were used to filter the optimal pair of primers for detection. Real-time PCR was carried out using optimized parameters and positive DNA prepared by serial (tenfold) dilution of a recombinant plasmid and by plotting a standard curve. In addition, the reproducibility, accuracy, and specificity of the assay were tested. Results showed that the sensitivity of detection of the Reston subtype of the Ebola virus by real-time PCR could reached 10(2) copies/microL. The linear relationship (R2) reached 0.997, the slope of the standard curve was -0.3101, and amplification efficiency was 110.145%. A sharp and narrow melting peak appeared at 79.94 degrees C for all standards in different dilutions. In conclusion, a fast and sensitive real-time PCR detection system for the Reston subtype of the Ebola virus was developed. This system could be used as a supplementary diagnostic and monitoring approach for basic and clinical studies on the Reston subtype of the Ebola virus. The detection system does not require expensive technology or specialist operators.
DNA Primers
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genetics
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Ebolavirus
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classification
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genetics
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isolation & purification
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Hemorrhagic Fever, Ebola
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virology
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Humans
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Real-Time Polymerase Chain Reaction
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methods
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Sensitivity and Specificity