The effects of Xiangsha Liujunzi Decoction (XLD) on expermental bile-regurgitational gastritis and gastric evacuation in rats were observed. XLD in dose of 30g/kg (p.o.) markedly pre- vented the acute gastric ucosa damate induced by gastric feeding of alkaline intestinal contents. For chronic regurgitational gastritis rat model induced by pyloric dilation with regurgitation of duodenal juice after 2 and 4 weeks , XLD in dose of 30g/kg (p. o.) lowered the incidence of gastritis, and reduce intragastric pH and bile acid. XLD in dose of 15g/kg and 30g/kg (p.o.) markedly inhibited the gastric evacuation. The results suggested that XLD is available for the treament of bile-regurgi- tational gastritis.

Objective:To explore the relationship between human papilloma virus (HPV)-DNA and cytomegalovirus (CMV)-DNA virus content and the risk factors of endometrial cancer (EC) and their prediction models.Methods:Fifty-eight patients with EC from January 2017 to June 2020 in Suzhou Hospital Affiliated to Anhui Medical University were selected as the observation group, and 58 patients with endometrial hyperplasia (EH) during the same period were selected as the control group according to the 1∶1 matching case control principle. The clinical data, HPV-DNA, CMV-DNA positive rate and virus content of the two groups were compared, and the independent variables with P<0.05 were included in the Logistic regression model through single factor analysis. The risk factors of EC were analyzed, and the correlation between HPV-DNA, CMV-DNA and EC risk factors were evaluated. Logistic regression model was evaluated using the likelihood ratio chi-square and goodness-of-fit test, and the receiver operating characteristic (ROC) curve was used to analyze the predictive value of the model to EC. Results:The proportion of patients with age ≥ 55 years old, body mass index (BMI)≥ 24 kg/m 2, a history of hypertension and diabetes, malignant tumor family history and hormone replacement therapy history in the observation group were higher than those in the control group: 72.41%(42/58) vs. 39.66%(23/58),70.69% (41/58) vs. 43.10%(25/58), 36.21%(21/58) vs. 10.34%(6/58), 31.03%(18/58) vs. 8.62%(5/58),29.31%(17/58) vs. 5.17%(3/58), 27.93%(17/58) vs. 8.62%(5/58), and the differences were statistically significant ( P<0.05). The positive rates of HPV and CMV, the contents of HPV-DNA and CMV-DNA in the observation group were higher than those in the control group: 62.07%(36/58) vs. 29.31%(17/58),81.03%(47/58) vs. 41.38%(24/58), (471.16 ± 33.58) copies/ml vs. (240.08 ± 17.41) copies/ml, (256.19 ± 24.77) copies/ml vs. (132.27 ± 13.20) copies/ml, the differences were statistically significant ( P<0.05). Age ≥ 55 years, BMI ≥ 24 kg/m 2, history of hypertension and diabetes, family history of malignant tumors, history of hormone replacement therapy, HPV positive, CMV positive were risk factors for EC ( P<0.05). HPV-DNA virus content was positively correlated with the age of EC patients, family history of malignant tumors, and history of diabetes ( P<0.05), the viral content of CMV-DNA was positively correlated with age, family history of malignant tumors, and history of hypertension ( P<0.05). According to the ROC curve drawn by the predicted value and the true value of the Logistic regression model, the area under the curve was 0.930 (95% CI 0.885 - 0.976), when the predictive probability of individual nosocomial infection>0.528, the prediction sensitivity was 84.48%, and the specificity was 89.66%. Conclusions:The occurrence of EC is related to many factors, and the content of HPV-DNA and CMV-DNA viruses are the risk factors of its occurrence. The overall predictive value of a Logistic regression model constructed based on EC pathological characteristics and the virus content of HPV-DNA and CMV-DNA is high, and it has clinical application prospects.

ObjectiveTo establish a method of rapid detection of bacteria endotoxin based on interdigital gold electrode and surface acoustic wave (SAW).MethodsWith the carriers of 3-APTES and glutaral pentanedial,Polymyxin B (PMB) was immobilized on interdigital gold electrode,and then reacted with the bacteria endotoxin' s biological active material (lipopolysacchride,LPS) selectively.Double differential circuit based on SAW was employed to complete the detection.Two output oscillation signals were differentiated through mixer and the endotoxin content was described by frequency shift.ResultsThe experimental results indicated that there was a liner relationship between the frequency shift and endotoxin content within the content range of 75-130 EU/ml.ConclusionComparing with traditional method,the detection time is shortened to 10 minutes,the sensitivity is 13.8 KHz/(EU·mL-1),and repeatability is above 90％.

Objective To explore the effects of aberrant expression of DNA methyltransferase 1 (DNMT1) in cervical cancerization tissue and cervical cancer cells.Methods Cervical tissues were collected from 80 cases with a diagnosis of invasive cervix squamous cell carcinoma (SCC),53 cases with high-grade cervical intraepithelial neoplasia (CIN Ⅱ/Ⅲ),52 cases with low-grade cervical intraepithelial neoplasia (CIN Ⅰ)and 53 cases with normal cervix (NC).Meanwhile,Caski (HPV16-positive) and C33A (HPV-negative) cells selected from cervical cancer cell lines were cultured routinely in vitro.The expression of DNMT1 protein and mRNA were examined by Western blot analysis and real-time PCR (qRT-PCR) in the tissues and cells,respectively.Results The levels of DNMT1 protein were 1.33,1.84 and 2.28,and the Ct-ratios (DNMT1/β-actin) of DNMT1 mRNA were 1.27,1.27 and 1.26 in CIN Ⅰ,CIN Ⅱ/Ⅲand SCC group,respectively.Comparing with NC group,the expression of DNMT1 protein or mRNA was elevated in deficient cervical groups,with statistical significance (F =110.57,P ＜ 0.001,F =2.68,P =0.048).The expression levels of DNMT1 protein were increased steadily according to severity of the cervix lesions (x2tend =50.80,P ＜ 0.001),however,the expression of DNMT1 mRNA was not observed the same tendency (x2tend =3.63,P ＞ 0.05).The results from experiment in vitro showed that the levels of DNMT1 protein or mRNA were both higher in Caski cell than in C33A cell,especially for DNMT1 mRNA with significantly difference (t =7.134,P =0.002).Conclusion Aberrant expression of DNMT1 protein or mRNA could link with the risk of cervical cancerization by both transcriptional and posttranscriptional mechanisms.There would be a synergistic effect between overexpression of DNMT1 and HPV16 infection in the progression of cervix carcinogenesis.

Objective To establish the multiple quantitative fluorescent polymerase chain reaction (QF-PCR)assay and evaluate its clinical application in prenatal diagnosis.Methods Totally 170 samples Were collected between May 2008 and July 2009 in prenatal center of Peking Union Medical College Hospital:123 of them were amniotic fluid,9 were chofionic villous samples,20 were fetal blood and 18 were villi from aborted fetuses.All samples were from women of Han nationality,with mean age of (34.1±4.6) years old,and with mean gestational age of(19.6±1.0)weeks.Cytogenetic cultures and karyotyping were made to every sample.Genomic DNA wag extracted from the samples.The sequences of twenty short tandem repeat (STR) markers were designed according to the GenBank and references,including 6 STR markers in chromosome 21.4 in chromosome 18.4 in chromosome 13,4 in chromosome X,1 in chromosome Y and 1 universal marker in both X and Y chromosome.Each sample was amplified by two sets of multiple QF-PCR,which included 4 STR markers in each of 21,18,13 and sex chromosomes. If the result was uninformative,the third set of anotherd 4 STR markers was added. Results ( 1 ) Karyotyping. Cytogenetic analysis were made for all the 170 samples, 151 (89%) of which were normal, and 19 (11% ) were abnormal (2)QF-PCR assay. 167(98% ) samples were detected by QF-PCR. The results were obtained within 2 -3 days after sampling. 134 samples were proved normal by QF-PCR, which was consistent with karyotyping. Among the 19 abnormal karyotype samples, 18 were detected as abnormal( eight were 21-trisomy, three were 18-trisomy)by QF-PCR. Among the 167 samples, 150(90% ) were detected using the first and second set of STR mixtures, and 3(2% ) were detected when the third set of STR was added. The remain 14(8% ) were uninformative. (3) The diagnostic efficiency of QF-PCR. The sensitivity of QF-PCR in prenatal diagnosis of common aneuploidities was 95%, the specificity, the false positive rate, the false negative rate, the positive predictive value and negative predictive value were 100% ,0,5%, 100% and 99% , respectively. (4)Autusome and sex chromosome detection by QF-PCR. Among all the STR markers,D21S1270 and D21S1411 had the highest heterozygosifies in chromosome 21, and DXS8377 had the highest in sex chromosome. The amplifications were stable. Conclusion Multiple QF-PCR assay is a valid alternative in rapid prenatal diagnosis of common chromosome aneuploidies. With high accuracy, it can be used for numerous sample test in large-scale laboratories.

BACKGROUND:Accumulative evidence supports that co-culture technology can be applied to construct the tissue-engineered cartilage with excellent biological characters. OBJECTIVE:To elaborate the co-culture concept and conclude and analyze seed cell sources, cel mixed ratio, spatial y-defined co-culture models and biomaterials in co-culture systems to conclude and analyze the biological characters of tissue-engineered cartilage, and to prospect progression of co-culture systems in cartilage tissue engineering. METHODS:The first author retrieved the databases of PubMed, Web of Science, and CNKI for relative papers published from January 1976 to May 2016 using the keywords ofco-culture, co-culture systems;articular cartilage, chondrocytes, mesenchymal stem cells;tissue engineering, articular cartilage tissue engineeringin English and Chinese, respectively. Finally 60 literatures were included in result analysis, including 1 Chinese and 59 English articles. RESULTS AND CONCLUSION:Co-culture technology emphasizes the role of microenvironment in terms of various physical, chemical and biological factors in the cell processing. In cartilage tissue engineering, co-culture systems contribute to maintain the viability and natural cell phenotype of chondrocytes and induce cartilage differentiation of mesenchymal stem cells. In addition, co-culture technology provides a novel way for cartilage tissue engineering to overcome the shortage of chondrocytes and repair injury to the cartilage-subchondral bone. However, the mechanisms of cell-cell interaction in co-culture systems still need to be explored in depth, so as to optimize the co-culturing conditions and construct perfect tissue-engineered cartilage.

Objective To observe the effect of aerobics exercise on myocardial fibrosis after acute myocardial infarction (AMI) in rat.Methods Twenty-four AMI Sprague Dawley (SD) rats were randomly assigned to sham-operated group (Sham),AMI group and aerobics exercise treatment group (ET).Except Sham,other groups of rats were underwent anterior wall myocardial infarction.After ten weeks,the myocardial mRNA level of connective tissue growth factor (CTGF),collagen Ⅰ (COL1 a1),collagen Ⅲ (COL3a1) detected by real time-quantitative polymerase chain reaction (PCR) analysis and myocardial collagen volume fraction (CVF) was determined on Masson stained sections.Results Campared to Sham-operated group,AMI group the level of CTGF,COL1a1,COL3a1,and CVF were increased (P ＜0.05,P ＜ 0.01).Campared to AMI and ET groups,the levels of CTGF,COL1a1,COL3a1,and CVF were decreased (P ＜ 0.05,P ＜ 0.01).Conclusions Aerobics exercise can reduced the myocardial fibrosis after AMI in rat.

The Chinese Pharmacopoeia is the legal technical standard which should be followed during the research, production, use, and administration of drugs. At present, the new edition of the Chinese Pharmacopoeia is planned to be promulgated and implemented. This article summarizes and analyzes the main characteristics and the content of updates and amendments of the Chinese Pharmacopoeia 2025 Edition(Volume Ⅰ), to provide a reference for the correct understanding and accurate implementation the new edition of the pharmacopoeia.

Globally, cervical cancer continues to be one of the most common cancers among females. Although screening for cervical cancer has been gradually carried out, the incidence and mortality of cervical cancer in China are still at a high level. So the prevention and treatment of cervical cancer in China still has lots of work to do. The International Federation of Obstetrics and Gynecology (FIGO) gynecological oncology committee revised the staging of cervical cancer in 2018. The new staging changed in terms of stage ⅠB and stage Ⅲ compared with previous FIGO staging. FIGO also provided prevention and treatment strategies and the treatment regimens of each stage, which had an important impact on the prevention and treatment of cervical cancer as well as an important enlightenment for China.

Objective To explore the relationship among expression of peroxisome proliferators-activated receptors γ (PPARγ) in human glioma, malignancy and outcome. Methods The level of PPARγ was detected with immunohistochemistry in the glioma from 48 cases with glioma. The progression-free survival and overall survival were compared with Kaplan-Meier survival curve between the patients with more expression of PPARγ and less ones. Results The expression of PPARγ decreased (P<0.01) with the the tumor malignancy increasing from grade I to IV, which was negatively correlated (r=-0.770, P<0.01). Both the progression-free and overall survival time were significant difference between the patients with more expression of PPARγ and less ones (P<0.01). Conclusion PPARγ expression correlates with the malignancy of human glioma, which may predict the outcome of the patients.