Analysis of 14 cases of melanosis caused by 1, 8-dinitronaphthalene and 1, 8-diaminonaphthalene / 中华劳动卫生职业病杂志

14 workers in the 1, 8-diaminonaphthalene workshop of a chemical company in Nantong City had symptoms or signs of varying degrees of pruritus and pigmentation of the face, neck and waist. Pathological examination of skin biopsies showed hyperkeratosis, the basal cells were liquefied and denatured. Seven workers were eventually diagnosed with occupational melanosis. To explore the causes of occupational melanosis caused by exposure to 1, 8-dinitronaphthalene and 1, 8-diaminonaphthalene, and to provide reference for the prevention and treatment of occupational melanosis in the future, this paper reported 14 cases of melanosis in the skin of workers in chemical industry.

Clinical characteristics and prognosis of 83 children with newly treated hepatoblastoma / 中华儿科杂志

Objective: To investigate the clinical features, survival and prognostic risk factors of children with hepatoblastoma (HB). Methods: Clinical data of 83 children with newly treated HB at the Department of Hematology and Oncology, Children's Hospital, the First Affiliated Hospital of Zhengzhou University from January 2012 to October 2019 were analyzed retrospectively. The sex, age, first clinical manifestations, pretreatment extent of disease (PRETEXT) stages, pathological types, initial alpha-fetoprotein (AFP), treatment methods and treatment outcome of all patients were summarized. The children diagnosed before 2018 were treated with "Wuhan Protocol", and those who diagnosed after 2018 were treated with the "Expert Consensus for Multidisciplinary Management of Hepatoblastoma"(CCCG-HB-2016) protocol. Kaplan-Meier survival analysis was used to calculate the survival rate, Log-Rank test was used in univariate analysis, and the Cox regression model was used in multivariate prognosis analysis. Results: Among 83 cases, there were 51 males and 32 females. The age of onset was 25.2 (9.0, 34.0) months old, and 64 cases (77%) were under 3 years old. The most common first clinical manifestation was abdominal mass in 45 cases (54%). There were 8 cases of PRETEXT stage Ⅰ, 43 cases of stage Ⅱ, 20 cases of stage Ⅲ and 12 cases of stage Ⅳ. During the follow-up period of 40 (17, 63) months, the 1-year overall survival (OS) rate and event-free survival (EFS) rate were (84±4) % and (79±5) %, respectively, and 5-year OS rate and EFS rate were (78±5) % and (76±5) %, respectively. Fifty-five cases were treated with "Wuhan Protocol", and the 5-year OS and EFS rate were (73±6) % and (71±6) %, respectively. Twenty-eight cases were treated with CCCG-HB-2016 protocol, and the 5-year OS and EFS rate were (88±7) % and (82±9) %, respectively. Multivariate COX regression analysis showed that AFP did not turn negative after 3 courses of postoperative chemotherapy (HR=9.228, 95%CI 1.017-83.692) and PRETEXT stage Ⅳ (HR=6.587, 95%CI 1.687-25.723) were independent risk factors affecting the prognosis of children with HB. Conclusions: The "Wuhan Protocol" and CCCG-HB-2016 protocol were effective in the treatment of children with HB. AFP did not turn negative after 3 courses of postoperative chemotherapy and PRETEXT stage Ⅳ were independent risk factors affecting the prognosis of children with HB.

Identification, biological characteristics, and control of pathogen causing Pinellia ternata soft rot in Hubei province / 中国中药杂志

This study was designed to identify the pathogen causing soft rot of Pinellia ternata in Qianjiang of Hubei province and screen out the effective bactericides, so as to provide a theoretical basis for the control of soft rot of P. ternata. In this study, the pathogen was identified based on molecular biology and physiological biochemistry, followed by the detection of pathogenicity and pathogenicity spectrum via plant tissue inoculation in vitro and the indoor toxicity determination using the inhibition zone method to screen out bactericide with good antibacterial effects. The control effect of the bactericide against P. ternata soft rot was verified by the leave and tuber inoculation in vitro. The phylogenetic tree was constructed based on the 16 S rDNA, dnaX gene, and recA gene sequences, respectively, and the result showed that the pathogen belonged to the same branch as the type strain Dickeya fangzhongdai JS5. The physiological and biochemical tests showed that the pathogen was identical to D. fangzhongdai, which proved that the pathogen was D. fangzhongdai. The pathogenicity test indicated that the pathogen could obviously infect leaves at 24 h and tubers in 3 d. As revealed by the indoor toxicity test, 0.3% tetramycin, 5% allicin, and 80% ethylicin had good antibacterial activities, with EC_(50) values all less than 50 mg·L~(-1). Tests in tissues in vitro showed that 5% allicin exhibited the best control effect, followed by 0.3% tetramycin and 10% zhongshengmycin oligosaccharide, and their preventive effects were better than curative effects. Therefore, 5% allicin can be used as the preferred agent for the control of P. ternata soft rot, and 0.3% tetramycin and 10% zhongshengmycin oligosaccharide as the alternatives. This study has provided a certain theoretical basis for the control of P. ternata soft rot.

Concentration-dependent effects of nitric oxide on tumors and chemosensitivity / 药学学报

The resistance and dose limitation of tumors is a serious obstacle to cytotoxic drug therapy in the field of medical oncology. Nitric oxide (NO) is a powerful adjuvant for tumor hypersensitivity for traditional chemotherapy and radiation therapy. The concentration of NO plays an important role in affecting its anti-tumor effect. This review summarizes the mechanism of concentration-dependent effects of NO on tumor cells and the mechanism of chemotherapy sensitization. It provides evidence for rational use of NO to exert anti-tumor effects, and overcoming multidrug resistance and anti-tumor drug development.

Effects of biocontrol strain BZJN1 and streptoprofen on physicochemical properties and bacteria structure of rhizosphere soil of Atractylodes macrocephala / 中国中药杂志

Soil microorganisms are one of the important biological indictors of soil quality and can reflct the comprehensive ecological environment characteristics of the soil. The research of soil microbial diversity is the key to know the ecological functions and balance with soil. In this paper, high-throughput sequencing on PCR-amplified 16 S rRNA gene V3-V4 fragments was used to determine the bacterial diversity in rhizosphere soil of A. macrocephala under the treatment with BZJN1 or streptoprofen. The results showed that there were no significant differences of the bacteria in A. macrocephala rhizosphere soil of the streptoprofen treatment group and the biocontrol BZJN1 treatment group. All the soil bacteria was classified into 25 categories,67 classes, 108 orders, 167 families and 271 generas, except some unidentified bacteria. Proteobacteria(30.7%-34.8%) was the dominant phylum, of which Alphaproteobacteria(16.8%-18.5%) was the dominant subgroup. Compared with the control group, the relative abundance of multiple phylums bacteria in the rhizosphere soil of A. macrocephala was significantly changed in the streptoprofen treatment group and the biocontrol BZJN1 treatment group. In addition, RDA analysis showed that there was connection with different environmental factors and microbial communities. The abundance of the three genera in the rhizosphere soil of A. macrocephala was significantly positively correlated with Invertase, Urease and AP. PICRUSt function prediction results showed that BZNJ1 could enhance some bacterial functions and promote the plant growth. Biocontrol is a new type of green and safety control pest method. BZNJ1 significantly enhances some bacterial functions on the basis of effectively preventing root rot of A. macrocephala and promoting plant growth, and has no significant effect on the soil bacterial community structure. All the results can provide theoretical support for popularization of BZNJ1.

Mechanism of Nardostachyos Radix et Rhizoma and Corydalis Rhizoma on Atrial Fibrillation Based on Network Pharmacology / 中国实验方剂学杂志

Objective:To investigate the mechanism of Nardostachyos Radix et Rhizoma and Corydalis Rhizoma in treatment of atrial fibrillation by predicting targets and signaling pathways based on network pharmacology.Method:The traditional Chinese medicine system platform (TCMSP) database was used to screen out active components of Nardostachyos Radix et Rhizoma and Corydalis Rhizoma,predict targets,and construct the active component-predicted target network.Through the Online Mendelian Inheritance in Man (OMIM),Therapeutic Target Database (TTD),and Genecards databases,potential target information of atrial fibrillation was retrieved.STRING 11.0 database was used to obtain the protein-protein interaction data of relevant targets,and the results were visualized by Cytoscape 3.7.1 software to construct protein-protein interaction network relating to atrial fibrillation.The predicted targets of Nardostachyos Radix et Rhizoma and Corydalis Rhizoma were mapped to the potential targets of atrial fibrillation.The intersection targets were the potential targets for the treatment of atrial fibrillation with Nardostachyos Radix et Rhizoma and Corydalis Rhizoma.Then,Visualization and Integrated Discovery (DAVID),a database for annotation,was used to analyze biological functions and pathways of the potential targets of Nardostachyos Radix et Rhizoma and Corydalis Rhizoma in the treatment of atrial fibrillation.Finally,Cytoscape3.7.1 software was utilized to construct active component-potential target-signal pathway network of Nardostachyos Radix et Rhizoma and Corydalis Rhizoma in treatment of atrial fibrillation.Result:Totally 51 active components of Nardostachyos Radix et Rhizoma and Corydalis Rhizoma were screened out,and 18 potential targets for the treatment of atrial fibrillation with Nardostachyos Radix et Rhizoma and Corydalis Rhizoma were predicted.The effect was mainly correlated with the regulation of interleukin-6 (IL-6),sodium channel protein type 5 subunit alpha (SCN5A),tumor necrosis factor (TNF),nitric-oxide synthase,endothelial (NOS3),potassium voltage-gated channel subfamily hmember 2 (KCNH2),collagen alpha-1(I) chain (COL1A1),retinoic acid receptor RXR-alpha (RXRA),tissue factor (F3),alpha-1B adrenergic receptor (ADRA1B) and other target proteins,cyclic guanosine monophosphate (cGMP)/cGMP-dependent protein kinase G (PKG) signaling pathway,phosphatidylinositol-3-kinases (PI3K)/protein kinase B (Akt) signaling pathway,transcriptional disorders in cancer,calcium signaling pathways,and adrenergic signals in cardiomyocytes.Conclusion:Nardostachyos Radix et Rhizoma and Corydalis Rhizoma treat atrial fibrillation based on multiple components,multiple targets and multiple channels,and provide a scientific basis for subsequent experimental studies for further explainning its mechanism of action.

Intervention effects and mechanism of Chinese herbal medicine of supplementing Qi and activating blood circulation on chronic intermittent hypoxia composite insulin resistance ApoE~(-/-) mice model / 中国中药杂志

This study aims to observe the intervention effects of Chinese herbal medicine of supplementing Qi and activating blood circulation on chronic intermittent hypoxia(CIH) composite insulin resistance(IR) mediated atherosclerosis(AS) mice model,and to observe the mechanism of SREBP-1 c signaling molecule.IR Apo E-/-mice model was induced by high-fat diet combined with STZ injection.Then the mice were treated with hypoxic animal incubator for 8 h per day and 8 weeks to establish a CIH+IR-ApoE-/-mouse model.Model mice were randomly and averagely divided into normoxic control group(NC),model group(CIH) and SREBPs inhibitor group(betulin),atorvastatin group(WM),TCM low-dose group(TCM-L),TCM middle-dose group(TCM-M) and TCM high-dose group(TCM-H) group.Chinese herbal medicine of supplementing Qi and activating blood circulation including ginsenosides combined with ligustrazine(TMP) were used as intervention drugs.The study observed the effect of drugs on IR,serum lipid,inflammation,stress,AS and SREBP-1 c related molecules.The results showed that fasting blood glucose in TCM-H group decreased compared with other experimental groups(P<0.05).HDL-C level in betulin group,WM group,TCM-H group was higher than that in CIH group(P<0.05).LDL-C level in TCM-M group,TCM-H group is lower than that in CIH group(P<0.05).The level of CRP in CIH group was higher than that in other groups(P<0.05).The level of SOD in TCM-H group was higher than that in CIH group(P<0.05).NC group and CIH group showed obvious AS aortic plaque,while betulin group,WM group,TCM-H group showed reduction in AS plaque(P<0.05).For descending aorta,AS plaque in CIH group was multiple and large,while less and smaller in WM group and TCM-H(P<0.05).The expression of SREBP-1 c and FAS in aorta and skeletal muscle in TCM-H group was lower than that in CIH group(P<0.05).In aorta,the expression of TNF-α and CD106(VCAM-1) was lower in TCM-H group than that in CIH group(P<0.05).In aorta,skeletal muscle and liver,the level of p-IRS-1 in TCM-H group was significantly higher than that in CIH group(P<0.05).In aorta and liver,the expression of HIF-1α in TCM-H group was lower than that in CIH group(P<0.05).The study demonstrated that combination ginsenosides with TMP could improve IR and serum lipid level and inhibit inflammation and oxidative stress as well as ultimately alleviate AS to some extent.And the mechanism of its interventional effects might be related to the inhibition of CIH-induced upregulation of SREBP-1 c related molecules.

Research progress in the relationship between depression and survival outcome in patients with lung cancer / 中南大学学报(医学版)

In recent years, with the high incidence of lung cancer and mortality, the disease-relevant mental health problems such as depression began to attract attention. A growing number of studies have also begun to hypothesize and confirm the relationship between depression and survival or mortality in patients with lung cancer, and have made some progress in basic research, prospective cohort research and intervention research. In basic research, cancer can cause depression due to mediating the production of inflammatory factors, and the genotype of tumor epidermis growth factor receptor (EGFR) can explain the high mortality and risk of depression in patients with lung cancer from a certain point of view. Different studies in prospective cohort studies argue that depression is an important predictor of survival in patients with lung cancer and need to be further studied. In the aspect of intervention research, although some studies have confirmed the potential of antidepressants in anti-tumor oxidative therapy, there is no enough evidence in psychological intervention and drug intervention to prove their effectiveness in improving the survival outcome of lung cancer. In the future, it is necessary to further explore the possible mechanisms for antidepressants and psychological intervention to improve the survival time of the patients.

Effects of Tim-3 on osteoclast-like cell formation and bone resorption induced by peripheral blood mononuclear cells / 临床检验杂志

Objective@#To investigate the effects of Tim-3 on osteoclast-like cell (OLC) formation and bone resorption induced by peripheral blood mononuclear cells (PBMCs). @*Methods@#The expression levels of Tim-3 in of rheumatoid arthritis (RA) patients and healthy controls were detected by flow cytometry. The OLCs were induced by human PBMCs in vitro. The expression levels of tartrate-resistant acid phosphatase (TRAP), cathepsin K (CTSK) and matrix metalloproteinase 9 (MMP9) mRNAs in the formation of OLCs were detected by real-time quantitative PCR. The morphology of OLCs was observed by Wright′s staining and G-actin staining, and the number of OLCs was counted by TRAP staining. The number and area of bone resorption pits in OLCs were detected by the Corning Osteo Assay Surface. @*Results@#The expression levels of Tim-3 in PBMCs of RA patients ([77.31±10.66]%) were significantly higher than that of healthy controls ([51.72±16.69]%, t=7.593, P＜0.01). When PBMCs with different Tim-3 levels were induced into OLCs, the area of bone resorption pits in the high Tim-3 level group ([1.054±0.085] S/mm 2 ) were significantly lower than those in the intermediate Tim-3 level group ([1.889±0.053] S/mm 2 ) and the low Tim-3 level group ([2.763±0.066] S/mm 2 , F=9.318, P＜0.05). @*Conclusion@#Tim-3 may negatively regulate the bone resorption of OLCs.

Risk Factors for Antibiotic-associated Diarrhea in Chinese Adult Patients:A Meta-analysis / 中国药房

OBJECTIVE:To evaluate the risk factors for antibiotic-associated diarrhea (AAD) in Chinese adult patients systematically,and to provide evidence-based reference in clinic. METHODS:Retrieved from CNKI,VIP,CBM,Wanfang database,PubMed and Embase,etc.,disease control studies about AAD risk factors of Chinese adult patients were collected.The retrieval time limit ranged from Jan. 2000 to Jan. 2018. Meta-analysis was performed by using Rev Man 5.2 software after data extraction and quality evaluation of included literatures with NOS scale. RESULTS:A total of 14 literatures were included, involving 20 914 patients. The result of Meta-analysis showed that age ≥65 years [OR＝2.36,95%CI(1.99,2.79),P＜0.001], fasting [OR＝4.65,95%CI(3.79,5.69),P＜0.001],use of acid suppressant [OR＝5.82,95%CI(3.77,8.98),P＜0.001],serum albumin ≤30 g/L [OR＝2.40,95%CI(2.00,2.88),P＜0.001],invasive operation [OR＝3.95,95%CI(3.03,5.15),P＜0.001], stay in ICU [OR＝2.93,95%CI(2.38,3.60),P＜0.001],hospitalization time ≥10 d [OR＝4.08,95%CI(3.31,5.03),P＜0.001], antibiotic species ≥3 kinds [OR＝1.98,95%CI(1.56,2.51),P＜0.001] and duration of antibiotics use ≥10 d [OR＝6.16,95%CI (3.22,11.76),P＜0.001] were significantly correlated with the occurrence of AAD. CONCLUSIONS:Age ≥65 years,fasting, use of acid suppressant,serum albumin ≤30 g/L,invasive operation,stay in ICU,time of hospitalization ≥10 d,antibiotic species≥3 kinds and duration of antibiotics use≥10 d are risk factors for AAD in Chinese adult patients.

Study on the Extraction Technology for Active Constituents of Tibetan Medicine Pedicularis kansuensis / 中国药房

OBJECTIVE:To optimize the extraction technology of Tibetan medicine Pedicularis kansuensis and compare con-tent of verbascoside and isoverbascoside differences in P. kansuensis from various habitats. METHODS:Using verbascoside and iso-verbascoside and dry paste yield as comprehensive evaluation indexes,single factor test and orthogonal test were used to investigate the extraction solvent,solvent dosage,extraction time and times to optimize extraction technology,and the verification test was conducted. Contents of the 2 constituents verbascoside and isoverbascoside in P. kansuensis from Gansu,Qinghai and Sichuan were compared. RESULTS:The optimal extraction technology was as follows as 8-fold 50% ethanol,extraction for 3 times,90 min each time. The verification results showed that the average contents of verbascoside and isoverbascoside were 3.49%(RSD=1.28%,n=3),1.26%(RSD=1.32%,n=3),and average dry paste yields were 37.99%(RSD=1.97%,n=3). The contents of verbascoside and isoverbascoside in P. kansuensis from Qinghai were relatively higher. CONCLUSIONS:Optimized extraction tech-nology is reasonable,stable,feasible;the contents of index constituents in P. kansuensis from different habitats have certain differ-ences. The study can provide scientific evidence for the development and utilization of extraction,and the in-depth study of quality evaluation for medicinal material.

Association of the H770H of PR gene polymorphism with susceptibility to endometriosis / 中华妇产科杂志

Objective To investigate the association of PR gene exon 5 region H770H (rs1042839) single nucleotide polymorphism (SNP) with the genetic susceptibility to endometriosis (EM) in southern Han Chinese women. Methods Totally 431 EM patients and 499 non-EM women were collected and separated into EM group and control group, that all cases were confirmed by operation and pathology. A case-control study was performed in EM and control groups to evaluate the association of these SNP with the susceptibility to EM by using a fluorescent quantitative PCR-based high resolution melting (HRM) method. Results The C and T of PR H770H allele frequencies among the EM and control groups were 97.9%(844/862), 2.1% (18/862) and 99.4% (992/998), 0.6% (6/998), respectively. The CC, CT and TT of PR H770H genotype frequencies among the EM and control groups were 95.8%(413/431), 4.2%(18/431), 0 and 98.8%(493/499), 1.2%(6/499), 0, respectively. There were statistical significances in the PR H770H alleles and genotypes distributions between the two groups (χ2=7.386, P=0.007;χ2=8.135, P=0.004). Carrying allele C reduced the risk of EM (OR=0.986, 95%CI: 0.976-0.996), while carrying allele T enhanced the risk of EM (OR=3.319, 95%CI: 1.323-8.325); carrying genotype CC reduced the risk of EM 0.970 time (OR=0.970, 95%CI: 0.949-0.991), whereas carrying genotype CT enhanced the risk of EM 3.473 times (OR=3.473, 95%CI:1.391-8.671). Conclusion There is significant association between the polymorphism of PR H770H and genetic susceptibility to EM in southern Han Chinese women.

Dual Source CT High Pitch Prospective Scan in Triple-rule-out Acute Chest Pain Examination / 中国医学影像学杂志

PurposeTo investigate the image quality of Dual Source CT (DSCT) high pitch prospective scan in acute chest pain examination by using triple-rule-out (TRO) protocol and its responses to heart beat rate change.Materials and Methods Thirty-two consecutive patients who planned to undergo TRO acute chest pain examination were enrolled and randomly divided into research group and control group. The conventional retrospective spiral scanning protocol was applied to the patients in the control group, while the high pitch prospective spiral scanning mode was used in the research group. CT value, noise level, SNR, CNR and radiation dosage in aorta and pulmonary arteries were recorded and compared between the two groups, and the image quality of the coronary arteries was scored subjectively.Results No significant difference was found in the aspects such as CT value, noise level, SNR, CNR radiation dosage in aorta and pulmonary arteries (P>0.05); however, the subjective scoring for coronary artery in the research group (85.5%) was significantly lower than that in the control group (93.9%) (χ2=8.33,P0.05). In addition, the radiation dosage in the control group was significantly higher than that in the research group [(20.8±6.2) mSvvs. (2.3±0.4) mSv;t=17.142,P<0.01].Conclusion DSCT high pitch prospective scanning in TRO protocol shows high success rate in examining patients with acute chest pain whose heart beat rate is lower than 80 beats/min and heart beat variance is less than 5 beats/min. The image quality has no difference with that derived from retrospective scan but with far more less radiation dose (2.3±0.4) mSv. This method thus is promising and can be widely promoted clinically.

The role of cell apoptosis mediated by endoplasmic reticulum stress (ERS) of deep tissue injury of pressure ulcer of rats / 中国应用生理学杂志

<p><b>OBJECTIVE</b>To observe the the expression of endoplasmic reticulum stress (ERS) related factors in deep tissue injury (DTI) at pressure ulcer rat and to investigate the ERS mechanism of DTI in muscle tissue and protective effect of 4-phenylbutyric acid (4-PBA) in local tissue.</p><p><b>METHODS</b>Fifty male SD rats were randomly devided into control group, model group, experimental group NS group and PBA group, the experimental groups were divided into 4 d, 7 d, 14 d and 21 d group according to the observation time (n = 5). Rats in the PBA group were administrated with gastric perfusion of 4-PBA after the modeling; the NS group was given normal saline of the same quantity. Using HE staining to observe morphologic character. The expression of glucose regulated protein 78 (GRP78), CHOP, Caspase 12 were detected by immunohistochernical staining. Cell apoptosis was detected by TUNEL assay.</p><p><b>RESULTS</b>HE staining results showed that each group demonstrated compression injury compared with control group: cellular swelling, ompaction of nuclear, and apoptosis in muscle tissue. The new muscle fiber in 4-PBA group fused faster than those in NS group. The number of TUNEL positive cells peaked at 4 day after compression, then got decreased on day 7 in muscle tissue, apoptosis positive cells were diminished after 4-PBA treatment. The immunohistochemical staining results showed that the expression of protein GRP78, CHOP, Caspase 12 peakd 4 d after modeling and decreased gradually. The GRP78, CHOP, Caspase 12 protein expression were significantly higher than those of PBA group at all time points (P < 0.05).</p><p><b>CONCLUSION</b>Cell apoptosis induced by endoplasmic reticulum stress took part in deep tissue injury resulting of pressure ulcer, which mechanism might be related to reducing apoptosis mediated by CHOP, Caspase 12.</p>

Expression of micro RNA-29a and 133a in myocardium of atrium of per-sistent atrial fibrillation model dog / 中国病理生理杂志

AIM:To investigate the effects of microRNA-29a and 133a expression in the atrium on atrial fibril-lation (AF) and fibrosis.METHODS:Chronic rapid atrial pacing was used to establish the persistent AF dog model , and the sham group was also set up .The cardiac ultrasound measurement was used for determining the cardiac structure size . The Masson 3 color staining were used to evaluate the stage of fibrosis .The expression of microRNA-29a and 133a in the left atrium ( LA) was detected by real-time transcriptase polymerase chain reaction .RESULTS: Compared with before modeling , no statistical difference of atrial dilatation and decreased ejection fraction in the model dogs with persistent AF was observed (P>0.05).Compared with sham group, the degree of fibrosis and collagen volume fraction (CVF) in per-sistent AF model group were increased obviously (P<0.05).The expression of microRNA-29a and 133a were decreased obviously (P<0.01, P<0.05).CONCLUSION:Structural remodeling of the atrium and atrial fibrosis are the essential for development and maintenance of atrial fibrillation .Down-regulation of microRNA-29a and 133a expression may be very important molecular mechanism for atrial structural remodeling in the persistent AF model dogs .

Application of three-dimensional reconstruction technique of MSCT in examination of colonic tumours / 中国基层医药

Objective To discuss the clinical value of application of three-dimensional reconstruction technique of MSCT in examination of colonic tumours.Methods Thirty patients underwent scanning using helical CT and post-processing on the workstation.All CTC images were reconstructed using shaded surface display (SSD) on workstation.Perspestive images such as the ones from DCBE were generated via raysum.The images could clearly demonstrate the extent and detail of the disorder by adjusting the CT value threshold.These results and that of barium enema and colon endoscopy were compared.Results Thirty cases had completely clinical and pathological data.3D images could correctly reveal the macroscopic morphology of colon tract and location of lesions.The correctly diagnostic rate was 100％ by MSCT,while the diagnostic rate by CTVE and colon endoscopy was basicly identical.Conclusion With the utilization of multiple methods,3D reconstruction can effectively demonstrate colonic tumours,and can be applied routinely in examination of colonic tumours.

Association of single nucleotide polymorphism of KCNE1 and KCNE4 gene with atrial fibrillation in Xinjiang Uygur and Han population / 中华心血管病杂志

<p><b>OBJECTIVE</b>To investigate the association between the KCNE1 gene G38S and the KCNE4 gene E145D and atrial fibrillation in Uygur and Han populations living in Xinjiang.</p><p><b>METHODS</b>KCNE1 gene G38S and the KCNE4 gene E145D genotype and frequency were determined using PCR restriction fragment length polymorphism (PCR-RFLP) in 488 atrial fibrillation patients (237 Uygur and 251 Han residents) and 488 age-and-gender matched controls (237 Uygur and 251 Han residents).</p><p><b>RESULTS</b>Genotype and allele frequency of KCNE1 gene G38S were similar between atrial fibrillation group and control group in the Han population (P = 0.556, P = 0.946). In the Uygur population, there was a statistical difference between atrial fibrillation group and control group (P = 0.018, P = 0.003). Logistic regression analysis revealed the KCNE1 38 G was one of the independent risk factors for atrial fibrillation in the Uygur population (OR = 1.634, 95%CI: 1.192-2.240, P = 0.002). The KCNE4 gene E145D, genotype and allele frequency were significantly different between atrial fibrillation group and control group in the Uygur population and Han population (P = 0.041, P = 0.015;P = 0.032, P = 0.013) . Logistic regression analysis revealed the KCNE4 145D was one of the independent risk factors for atrial fibrillation in the Uygur population and Han population (OR = 1.636, 95%CI:1.173-2.281, P = 0.004; OR = 1.491, 95%CI:1.076-2.065, P = 0.016) .</p><p><b>CONCLUSIONS</b>KCNE1 G38S is not associated with atrial fibrillation in the Han population while the KCNE1 G38S is associated with atrial fibrillation in the Uygur population. KCNE4 gene E145D is associated with atrial fibrillation in both Uygur population and Han population.</p>

Association of P53 gene polymorphisms with susceptibility to endometriosis / 中华医学遗传学杂志

<p><b>OBJECTIVE</b>To assess the association of a single nucleotide polymorphism(SNP) in tumor suppressor gene P53 with the risk of endometriosis (EM) in Han Chinese women.</p><p><b>METHODS</b>For 460 EM patients, 113 patients with endometrial carcinoma and 530 matched unrelated controls, a rs1042522(C/G) SNP of the P53 gene was genotyped by polymerase chain reaction-single strand polymorphism (PCR-SSP) and DNA sequencing.</p><p><b>RESULTS</b>A significant difference has been detected in the distribution of rs1042522 alleles and genotypes between the EM patients and controls (P< 0.01). Allele G has increased the risk of EM by 1.209 times, while allele C has reduced this risk by 0.837 times. Compared with GG genotype, GC and CC genotypes have both increased the risk for EM (OR=2.073, 95%CI: 1.521-2.820, and OR=1.930, 95%CI: 1.363-2.733, respectively). Significant differences were also detected in the distribution of rs1042522 alleles and genotypes between endometrial carcinoma patients and controls (P< 0.01). Allele G has increased the risk to endometrial carcinoma by 1.311 times, while allele C has reduced this risk by 0.757 times. Compared with GG genotypes, individuals with GC and CC genotypes are more likely to be affected with endometrial carcinoma (OR=2.778, 95%CI: 1.585-4.870, and OR=2.864, 95%CI: 1.557-5.263, respectively).</p><p><b>CONCLUSION</b>Our study has suggested a significant association between the rs1042522(G/C) polymorphism and susceptibility to EM in Han Chinese women. The mechanism of EM is similar to carcinoma from genetics point of view.</p>

Screening and identification of receptor reacting with nucleocapsid protein of duck enteritis virus / 病毒学报

To clarify the pathogenesis of Duck enteritis virus (DEV), the cDNA library of duck's liver infected by DEV and a bait plasmid containing DEV nucleocapsid protein (NP) gene were constructed, then the receptor was screened from the cDNA library plasmid by the yeast two-hybrid system and verified by GST pull-down test. The results showed that the capacity of the primary cDNA library was 1 x 106 CFU with insertion size from 0.5 to 1 kb, and the bait plasmid of pGBKT7-NP showed no self-activation. The receptor reacting with DEV NP in duck liver was initially confirmed as the protein kinase C inhibitor (PKCI). These results provide new clues for further investigation on pathogenesis of DEV.

Relationship of polymorphisms of AhR - 1661G/A with GSTP1 - 313A/G and susceptibility to endometriosis / 中华妇产科杂志

Objective To investigate the association of polymorphisms of arylhydrocarbon receptor (AhR) - 1661G/A with glutathione S-transferase pi ( GSTP1 ) - 313A/G and the susceptibility to endometriosis in southern Han Chinese.Methods Total of 432 endometriosis patients undergoing laparoscopic or laparotomy surgery matched with 493 patients with fallopian tube ligation,tubal recanalization,laparoscopic hydrotubation,benign ovarian tumor and teratoma surgeries without endometriosis as control group were enrolled in this study.The single nucleotide polymorphism (SNP) of AhR -1661G/A and GSTP1 -313A/G were detected by using a fluorescent quantitative PCR-based high resolution melting (HRM).Results The numbers of combined genotypes AhR - 1661G/A and GSTP1 -313A/G were 120 patients with AG + AA,64 patients with AG + AG,8 patients with AG + GG,109 patients with GG +AA,84 patients with GG + AG,4 patients with GG + GG,31 patients with AA + AA,10 patients with AA + AG,1 patient with AA + GG at endometriosis group and 131 patients with AG + AA,68 patients with AG + AG,6 patients with AG + GG,157 patients with GG + AA,66 patients with GG + AG,4 patients with GG + GG,35 patients with AA + AA,20 patients with AA + AG,3 patients with AA + GG at endometriosis group.There was no statistically different frequencies of genotypes between endometriosis group and control group (x2 = 12.558,P = 0.128 ).Compared with genotype GG + AA,the risk of endometriosis with genotype GG + AG was increased 1.833 time (95％CI:1.233-2.274).Conclusion The combined genotype GG + AG [ from AhR - 1661G/A (GG) and GSTP1 - 313A/G (AG) ] might be related with susceptibility to endometriosis.