Objective: To clone cDNA of enamel matrix serine proteinase (EMSP1) encoding mature protein from mouse dental germs. Methods: Total RNA was isolated from developing incisors and molars of 7 days mouse pups and reverse-transcribed into cDNA. Two pairs of specific primers was designed to obtain the desired gene by Touchdown PCR and Nested PCR. The segment was inserted into Vector pMD-18T, and recombined vectors was transformed into E.coli JM109.The positive clone was chose and analysed by restriction endonuclease mapping and DNA sequencing. Results:700 bp of cDNA of mouse EMSP1 was sueccessfully cloned from mouse tooth germs tissue. The sequence was consistent with that displayed in PubMed. Conclusion:The mouse EMSP1 cDNA encoding mature protein is obtained for further study.

Objective To determine long-term survival of 214 patients of lung cancer with brain metastases and to detect the potential prognostic factors.Methods A retrospective review was pedormed evaluating patients diagnosed as lung cancer with brain metastasis from Jan 1992 to Dec 2001 at Zhejiang Cancer Hospital.Two hundred and fourteen cases were enrolled.All hospital records were thoroughly reviewed in a retrospective manner.The management of the brain metastases were as follows: 8 patients underwent surgical resection and postoperative whole brain radiotherapy (WBRT); 2 cases received resection and chemotherapy; 10 had resection alone; 10 underwent WBRT alone,36 had chemotherapy alone; 15 received the combination of resection,chemotherapy and WBRT; 104 were performed with chemotherapy combined with WBRT; 29 had only supportive care.Survival time was measured from the date of the first treatment for malignancy to the date of death or the last follow-up.Seven further potential prognostic factors were investigated for survival including age,gender,T or N status,number of extra cranial metastases,pathological type and treatment modality.Statistical analysis was performed using the Kaplan-Meier method and Cox-regression analysis.Results The overall median survival time was 10 months (95% CI9.06--10.94) and the 1,3,5 year survival rates were 7.46%,1.14% and 0,respectively.In the univariate model,none of the following variables had effect on survival: age,gender,T stage of the tumor,nodal status,number of extra cranial metastases and histological type.Univariate analysis showed a better survival for the combination of surgical resection,chemotherapy and radiation (P=0.00).Based on Cox-regression analysis,treatment modality was the only independent predictor of survival Conclusions Aggressive combined therapy of brain metastases may achieve a survival advantage.Excellent overall survival of lung cancer with brain metastases has been achieved with a combination of WBRT with surgical resection and chemotherapy.

Objective:To study the association of TGF?2 polymorphisms and maternal smoking with the occurrence of nonsyndromic cleft lip and palate(NSCLP). Methods:TGF?2 genes were amplified from peripheral leukocytes by means of PCR in 272 cases of nonsyndromic cleft lip with or without palate(CL/P), 251 of cleft palate only(CPO) and 312 of unrelated controls in Jilin Province, PCR products were analyzed by single-stranded conformation polymorphism(SSCP) and DNA sequencing. Maternal smoking was investigated. The association of TGF?2 polymorphisms, maternal smoking with the occurrence of CL/P and CPO was analyzed by SAS statistic system. Results:The 322 bp PCR product of TGF?2 was amplified from CL/P, CPO and control samples; SSCP analysis showed three alleles of TGF?2;sequencing results showed that allele1, allele2 and allele3 contained seven, eight and nine ACA repeats respectively. The statistic analysis showed that TGF?2 polymorphisms or maternal smoking was associated with the occurrence of CL/P and CPO respectively(P0.05).Conclusion:TGF?2 polymorphisms and maternal smoking during pregnancy are associated with the occurrence of CL/P and CPO. TGF?2 polymorphisms have no interaction with maternal smoking.

Mechanical stress plays an important role in bone growth and bone remodeling. It causes stretch stress and fluid shear stress (FSS), which can be sensed by mechanosensory cells, e.g. osteocytes and osteoblasts, and further induce changes of gene expression in those cells. The FSS is thought to be the main cause in this process. However, up to now, it is still not clear what signals are triggered in the mechanosensory cells cultured in vitro and how the FSS exactly affects the expression of specific proteins. Evidences have shown that Ca2+ signaling pathway, Cyclooxygenase-prostaglandin E2 pathway, protein kinase A/protein kinase C (PKA/PKC) pathway, and drosophila mothers against decapentaplegic (Smad) protein pathway may be the key players in osteoblast differentiation by FSS. The precise mechanism involved in mechanotransduction and signal transduction remains to be elucidated. The present review gives a brief summary on the effects of these signaling pathways on the differentiation of osteoblasts cultured in vitro under FSS, to get the message of the present situation of the research on the stress transmission and signal transduction influencing osteoblast molecular activity, and to provide reference for further study on its specific mechanism.
Animals ; Calcium Signaling ; physiology ; Cell Differentiation ; physiology ; Cells, Cultured ; Dinoprostone ; metabolism ; Humans ; Osteoblasts ; cytology ; physiology ; Prostaglandin-Endoperoxide Synthases ; metabolism ; Shear Strength ; physiology ; Signal Transduction ; physiology

Soil water is one of the most important components in hydrological cycle. The stable hydrogen and oxygen isotopes in soil water have been increasingly used in the ecological, environment and hydrological research. In view of different techniques for extracting soil water, there is significant difference in theδD andδ18 O composition. This paper presents a method for analyzing hydrogen and oxygen isotopes in soil water by using elemental analyzer and isotope ratio mass spectrometry with accelerated solvent extraction for sample pretreatment. The conditions are: extraction solvent: dichloromethane, temperature: 100 ℃, pressure of 10. 3 MPa, static time:10 min. The samples were extracted three times, and with cycle values of four, four and three, respectively. Comparing with the added water, the deuterium and oxygen isotope values in the extracted soil water enrich 2. 12‰-4. 58‰ and 0. 17‰-0. 93‰, respectively. The reproducibility of replicate extractions of soil water is around ±0. 89‰ for δD and ±0. 37‰ for δ18 O.

OBJECTIVETo evaluate the changes in the renal function of patients with chronic hepatitis B (CHB) receiving adefovir dipivoxil (ADV) or telbivudine (L-DT) monotherapy.

METHODSThis retrospective analysis involved 101 patients with CHB and liver cirrhosis receiving either ADV or L-DT monotherapy for 52 weeks. Serum creatinine, estimates of glomerular filtration rate (eGFR), and the percentage of patients with eGFR≥90 ml·min(-1)·1.73 m(-2) at week 52 were compared with the baseline data between the two groups.

RESULTSThe mean changes of CR at week 52 from baseline were +0.05 mg/dl in ADV group and -0.12 mg/dl in L-DT group, showing a significant difference between the two groups (P=0.000). No patient was found to have an elevation of creatinine over 0.50 mg/dl. The median change of eGFR at week 52 from baseline differed significantly between ADV and L-DT groups (-4.09 vs+18.32 ml·min(-1)·1.73 m(-2), P=0.000). Ninety-two percent (12/13) of the patients with baseline eGFR<90 ml·min(-1)·1.73 m(-2) shifted to eGFR ≥90 ml·min(-1)·1.73 m(-2) after 52 weeks of L-DT treatment, as compared to 38% (3/8) in ADV group. The proportion of patients with eGFR≥90 ml·min(-1)·1.73 m(-2) in L-DT group increased from 76.36% (42/55) at baseline to 94.55% (52/55) at week 52, while that in ADV group decreased from 82.61% (38/46) at baseline to 78.26% (36/46). The constituent ratios of eGFR at different levels were similar at baseline (P=0.443) but significantly different at week 52 between the two groups (P=0.015).

CONCLUSIONL-DT treatment is associated with a renoprotective effect in patients with CHB, but the mechanism remains unclear.

Adenine ; analogs & derivatives ; therapeutic use ; Adolescent ; Adult ; Creatinine ; blood ; Female ; Glomerular Filtration Rate ; Hepatitis B, Chronic ; drug therapy ; physiopathology ; Humans ; Male ; Middle Aged ; Organophosphonates ; therapeutic use ; Retrospective Studies ; Thymidine ; analogs & derivatives ; therapeutic use ; Young Adult

OBJECTIVETo summarize the results of endoscopic screening of esophageal, gastric cardiac and gastric cancers in the high-risk population, and analyze the influencing factors such as age, gender and biopsy rate on their detection and early diagnosis rates.

METHODSNine high incidence cities and counties of esophageal cancer in Henan province were included in this study. People aged 40-69 years were set to the target population. Excluding contraindications for gastroscopy, in accordance with the national technical scheme of early cancer diagnosis and treatment, gastroscopic screening and biopsy pathology for human esophageal, cardiac and gastric cancers were carried out.

RESULTSDuring the 3-year period, a total of 40 156 subjects were screened. Among them, 18 459 cases of various precancerous lesions (46.0%) were detected. The cancer detection rate was 2.3% (916 cases), including 763 cases of early cancers. The diagnosis rate of early cancers was 83.3%. Precancerous lesions were detected in 9297 cases (23.2%) for esophagus and 9162 cases (22.8%) for gastric cardia as well as stomach, respectively.

CONCLUSIONSThe results of this study demonstrate that endoscopic screening is feasible for early detection, diagnosis and treatment of esophageal, gastric cardia and gastric cancers among high risk population in high incidence area. Exploration analysis of relevant affecting factors may help to further improve the screening project for early diagnosis and treatment of those cancers.

Adult ; Age Distribution ; Aged ; Biopsy ; Cardia ; China ; Early Detection of Cancer ; Esophageal Neoplasms ; diagnosis ; Female ; Gastroscopy ; Humans ; Male ; Mass Screening ; Middle Aged ; Precancerous Conditions ; diagnosis ; Stomach Neoplasms ; diagnosis

OBJECTIVETo evaluate effect of screening of esophageal cancer at rural areas in Henan province.

METHODSAt rural areas with high incidence of upper gastrointestinal carcinoma in Henan province total of 88,263 persons with 40 to 69 years old were set to the target population of the screening by the 12 cities and countries and endoscope and pathology diagnosis were performed during 2009-2013. For patients with precancerous lesions, follow-up visits were conducted and defined as follows: once in three years for patients with mild dysplasia, once per year for moderate hyperplasia patients, the patients with severe intraepithelial neoplasia/carcinoma in situ should be treat, at least once per year for those one who didn't under treatment. The result data of screening were summarized and detection rates of esophagus hyperplasia, carcinoma in situ, early and middle-late cancer were calculated, as well as the early diagnosis rate. The result between first round and follow-up screening was compared.

RESULTSTarget population were examined in first round screening. There were 8,434 persons with above mild dysplasia and the detection rate was 9.56%, among them there were 7,224 (8.18%) cases with light-middle hyperplasia, 789 (0.89%) cases with serious dysplasia or cancer in situ, 239 (0.27%) cases with early cancer and 182 (0.21%) cases with middle-late cancer. The sum of serious dysplasia or cancer in situ and early cancer was 1 028 and the early detection rate was 84.96% (1,028/1,210). From 2012 to 2013, the follow-up screening for persons with light-middle hyperplasia which should be followed 4,230 cases, there were 2 853 people to take in screening and compliance was 67.45%. Total of 94 cases were diagnosed with cancer in situ or early cancer. The detection rate and the early detection rate were 3.29% and 100%, respectively. The rates of detection and early detection in phase of follow-up screening were statistically significantly higher than that in first round screening respectively (P<0.001).

CONCLUSIONAt rural areas of high incidence upper gastrointestinal carcinoma in Henan province, the screening with endoscope had good effect and strengthening the follow-up screening could increase the effect.

Early Detection of Cancer ; Esophageal Neoplasms ; Humans ; Incidence ; Rural Population ; Time-to-Treatment

PURPOSE: Rituximab with cyclophosphamide, doxorubicin, vincristine, and prednisone administered every 3 weeks (R-CHOP-21) is the standard care for diffuse large B-cell lymphoma (DLBCL). It is unknown whether the dose-dense R-CHOP (R-CHOP-14) could improve the outcome of the disease in Asian population. MATERIALS AND METHODS: Newly diagnosed DLBCL patients were centrally, randomly assigned (1:1) to receive R-CHOP-14 or R-CHOP-21. R-CHOP-14 was administered every 2 weeks, and R-CHOP-21 was administered every 3 weeks. Primary end point was disease-free survival (DFS). Secondary end points included overall survival (OS), progression-free survival (PFS), response rate and toxicities. RESULTS: Seven hundred and two patients were randomly assigned to receive R-CHOP-14 (n=349) or R-CHOP-21 (n=353). With a median follow-up of 45.6 months, the two groups did not differ significantly in 3-year DFS (79.6% for R-CHOP-14 vs. 83.2% for R-CHOP-21, p=0.311), 3-year OS (77.5% for R-CHOP-14 vs. 77.6% for R-CHOP-21, p=0.903), or 3-year PFS (63.2% for R-CHOP-14 vs. 66.1% for R-CHOP-21, p=0.447). Patients with an International Prognostic Index (IPI) score ≥ 2 had a poorer prognosis compared to those with an IPI score < 2. Grade 3/4 hematologic and non-hematologic toxicities were manageable and similar between R-CHOP-14 and R-CHOP-21. CONCLUSION: R-CHOP-14 did not improve the outcome of DLBCL compared to R-CHOP-21 in Asian population. With manageable and similar toxicities, both of the two regimens were suitable for Asian DLBCL patients. For high-risk patients with IPI ≥ 2, new combination regimens based on R-CHOP deserve further investigation to improve efficacy.
Asian Continental Ancestry Group ; B-Lymphocytes ; Cyclophosphamide ; Disease-Free Survival ; Doxorubicin ; Follow-Up Studies ; Humans ; Lymphoma, B-Cell ; Prednisone ; Prognosis ; Rituximab ; Vincristine

Objective:To establish a colloidal gold technique assay for the rapid detection of immunoglobulin(Ig)M and IgG antibodies against 2019 novel coronavirus (2019-nCoV) and to evaluate its clinical performance.Methods:A total of 278 patients who were respectively treated at Wuhan Hankou Hospital and the People′s Hospital of Honghu from February 12, 2020 to February 20, 2020 were collected. According to the diagnostic criteria, 89 patients were confirmed with positive 2019-nCoV nucleic acid, and 189 were 2019-nCoV nucleic acid-negative suspected patients. A total of 273 medical examiners from Nanfang Hospital, Southern Medical University from 2015 to 2018 were selected as controls. The serum samples of patients were collected. 2019-nCoV nucleic proteins were obtained from prokaryotic expression vectors. Indirect IgM and IgG colloidal gold techniques were established by using recombinant nuclear protein. 2019-nCoV nucleic acid detection by reverse transcription-polymerase chain reaction (RT-PCR) was used as control. Serum specimens were tested for 2019-nCoV IgM and IgG. The specificity and sensitivity of colloidal gold assay were analyzed.Results:The positive rates of IgM and IgG with the colloidal gold detection in confirmed patients with positive 2019-nCoV nucleic acid were 78.7%(70/89) and 73.0%(65/89), respectively. The positive rates of IgM and IgG in medical examiners were 1.8%(5/273) and 0.7%(2/273), respectively. The sensitivity and specificity of IgM detection reagents were 78.7% and 98.2%, respectively, those of IgG detection reagents were 73.0% and 99.3%, respectively, and those of IgM combined with IgG detection were 87.6% and 98.2%, respectively. For suspected patients with negative 2019-nCoV nucleic acid, the positive rates of IgM and IgG were 59.8%(113/189) and 52.9%(100/189), respectively, and the positive rate of IgM combined with IgG detection was 66.1%(125/189).Conclusion:This reagent of 2019-nCoV antibodies detection (colloidal gold technique) fulfills the requirement for clinical application with high specificity and sensitivity, which can be served as a supplementary detection method for 2019-nCoV nucleic acid detection by RT-PCR.