2.Heat-killed Staphylococcus aureus induces a common early response in human monocytes in the presence of high concentration glucose
Ying CHEN ; Yan ZHANG ; Xin SONG ; Pei SUN ; Bai CHANG ; Haidong LI ; Dong MENG ; Qiaofen LI
Chinese Journal of Microbiology and Immunology 2012;(12):1005-1010
Objective To investigate the effects of heat-killed Staphylococcus aureus (HKSA) on the apoptosis and expression of iNOS and IL-1β in THP-1 monocytes in the presence of high concentration of glucose.Methods THP-1 cells were cultured in medium containing 25.0 mmol/L(HG) or 5.5 mmol/L (LG,control) D-glucose for 12 h-8 d.The THP-1 cells cultured for 6 d were extracted on the 0-48 h with or without HKSA,then apoptosis and expression of iNOS and IL-1β were examined.Apoptosis was analyzed by flow cytometry and expressions of IL-1β and iNOS were quantitated by real-time PCR.Results The expression of iNOS and IL-1β in THP-1 monocytes was increased significantly in the presence of high concentration of glucose for 12-48 h(P<0.05),reaching the highest level at 24 h and returned to baseline after 4 d.The expression was significantly lower than that of control after 4-6 d.Apoptosis rate was also increased significantly after 48 h to 4 days.HKSA infection enhanced apoptosis,but inhibited the expression of iNOS and IL-1 β in the presence of high concentration of glucose.The expression of iNOS and IL-1β increased significantly at 6 h(P<0.01),reaching the highest level at 12 h,but the levels were significantly lower than those in control groups (P<0.05).Conclusion These data suggest that high concentration of glucose can interfere with the anti-bacterial function of monocytes by reducing their expression of iNOS and IL-1β and enhancing their apoptosis.
3.Clinical analysis on the lymph nodes metastasis characters and their relation with the prognosis of the endometrial carcinoma patients
Zhiqi WANG ; Yan ZHANG ; Jianliu WANG ; Danhua SHEN ; Xin ZHAO ; Yuanyang YAO ; Yun BAI ; Lihui WEI
Chinese Journal of Obstetrics and Gynecology 2011;46(6):435-440
Objective To explore the lymph nodes (LN) metastasis characters of the endometrial carcinoma and its relation with the patients' prognosis. Methods A retrospective study was carried out on 227 cases of endometrial carcinoma who admitted to our department and underwent LN excision from Jul. 2000 to Feb. 2008. Results Among 227 cases who underwent pelvic LN excision, there were 22 cases (9.7%) presented LN metastasis. There were 12 cases with positive external iliac LN from 20 cases of patients with data in LN grouping. Para-aortic LN excision was carried out on 138 patients. There were 6 cases with positive para-aortic LN, 5 cases of them together with pelvic LN metastasis. Those patients with cervix involvement, annex metastasis, deep myometrium infiltration, grade 2-3 and negative estrogen receptor occurred pelvic LN metastasis more frequently than the others ( P < 0. 05 ). Among the 6 cases with positive para-aortic LN, there were 3 cases ( 3/6) with deep myometrium infiltration. For those whose paraaortic LN was negative, it was only 16. 7% (22 cases). But there were no difference statistically between them ( P> 0. 05 ). There were significant difference in 3 years disease-free survival rate between patients with positive pelvic LN or negative pelvic LN [(81. 8 ± 8. 2)% vs ( 97. 4 ± 1. 2 ) % , P = 0. 004]. While there were not significant difference in 3 years disease-free survival rate between patients with positive para-aortic LN or negative para-aortic LN [100% vs ( 96. 7 ± 1. 6) % , P > 0. 05]. Single factor analysis showed that the age more than 50 years, annex metastasis and pelvic LN metastasis related with the recurrence (P <0. 01). But cervix involvement, deep myometrium infiltration, para-aortic LN metastasis, pathology type, tumor grade and estrogen receptor did not relate with the recurrence ( P > 0. 05 ). Cox regression analysis showed that annex metastasis and the age of patients were independent risk factors affecting the recurrence ( P = 0. 011, P = 0. 025 ). Conclusions The most common site of pelvic LN metastasis is the external iliac LN for endometrial carcinoma patients. The patients with positive para-aortic LN always accompanied pelvic LN metastasis. Those patients with cervical involvement, annex metastasis, deep myometrium infiltration, poor differentiation and negative estrogen receptor be more likely exist pelvic LN metastasis. Pelvic LN metastasis may affect the prognosis of endometrial carcinoma patients.
4.Effects of body serum iron levels on female mice sexual maturity
Ling BAI ; Xin LIN ; Hua TANG ; Yan ZHANG ; Longtao JING ; Jia CHEN
Chinese Journal of Primary Medicine and Pharmacy 2015;22(9):1332-1334
Objective To study the influence of different body serum iron levels on follicle stimulating hormone (FSH),luteinizing hormone (LH) and uterine ovarian index,and explore the body serum iron level effects on female mice sexual maturity further.Methods 36 three weeks C57BL/6J female mice were randomly divided into the normal control group,strengthen-iron 1 group and strengthen-iron 2 group,12 cases in each group.The normal control group with normal diet(310mgFe/kg),strengthen-iron 1 group and strengthen-iron 2 group were given high -iron diets(respectively with 465mgFe/kg and 620mgFe/kg) after born 3 weeks.each group body,uterus and ovary mass after 2 weeks were checked;colorimetric method was used to detect the serum iron level;the serum follicle stimulating hormone (FSH) and luteinizing hormone(LH) were detected by chemiluminescent immunoassay.Results The body of mice serum iron levels,uterine ovarian index (uterine ovarian wet mass/body mass) and follicle stimulating hormone(FSH) level of strengthen-iron 1 group and strengthen-iron 2 group were higher than those of normal control group (F =9.11,11.11,7.09,all P < 0.01).Luteinizing hormone (LH) level of the strengthen-iron group was higher than those of normal control group (F =3.89,P < 0.05).Conclusion Uterine ovarian index,follicle stimulating hormone level and luteinizing hormone level were affected with increased serum iron level;It suggests that the increasing serum iron level can cause female mice sexual maturity in advance.
5.Impression accuracy of different methods for flabby ridge:A comparison based on 3-dimensional analysis
Guangna YUE ; Shizhu BAI ; Xin DING ; Hui ZHOU ; Min YAN ; Yumei ZHANG
Journal of Practical Stomatology 2016;32(2):202-206
Objective:To evaluate the impression accuracy of different impression methods for flabby ridge.Methods:5 patients with flabby ridge were included.Conventional technique,perforation technique and window opening technique were performed to make im-pressions and then final models were prepared.The optical models of the flabby ridge area were obtained both in patients'mouths and on the master casts by intraoral optical scanner.Data handling and computations were made by using 3D inspection and metrology soft-ware,regarding SD,Mean +and Mean -,with subsequent analysis.Results:The 3D deviation of the models obtained by conventional technique was the biggest,that obtained by window opening technique was the least.Conclusion:Window opening technique can de-crease the deformation of flabby ridge impression.
6.A study to investigate the prevalence of animal plague in Horqin Right Wing Front County, Inner Mongolia,2012
Shuang-quan, XIN ; Chang-shan, GUO ; Yan, HAI ; Wu-yun, BAI ; Zhen-qiang, WANG
Chinese Journal of Endemiology 2013;32(6):648-650
Objectives To investigate the prevalence of animal plague in Horqin Right Front County and provide scientific bases for prevention and treatment of the disease.Methods Plague surveillance was carried out according to the requirements of National Plague Monitoring Programme at 3 monitoring points in Horqin Right Front County in 2012.Squirrel density,the number of small rats,rat fleas,pathogenic and serological surveillance of Yersinia pestis were included in the study.Results A total of 356 dauricus were captured,the average density was 0.88 rats/hm2; female and male ratio was 1 ∶ 1.31 and the female embryo rate was 96.46%.The captured 13 small nocturnal mice belonged to 2 species,which included 10 cricetulus barabensis and 3 cricetulus longicaudatus,and the capture rate of small nocturnal mouse was 4.33% (13/300).A total of 98 rat fleas were collected from 25 rats; rat flea carrying rate was 100%(25/25) and flea index was 3.92.Eighty rat burrows were detected,and flea index was 0.188.Pathogen test results were negative.Indirect hemagglutination test was used to examine 356 rat sera and 1 serum was positive.Conclusions Detection of positive rat sera has proved the existence of plague epidemic in Horqin Right Front County.Therefore,the work on plague prevention and control has a long way to go.
7.Clinical efficacy of plasma exchange in 47 patients with severe bullous dermatoses or drug eruption
Tienan LI ; Xiaojie SUN ; Qingyan CHEN ; Lingyun LI ; Yan LIU ; Xin ZHANG ; Qiang WANG ; Yinghua BAI ; Yue LIU
Chinese Journal of Dermatology 2010;43(8):565-567
Objective To estimate the therapeutic value of plasma exchange (PE) in severe bullous dermatoses and drug eruption. Methods Plasma exchange was carried out to treat 47 patients with severe dermatoses including 15 cases of pemphigus, 17 cases of bullous pemphigoid and 15 cases of drug eruption who were intolerant or unresponsive to glucocorticosteroids and or immunosuppressants. Cobe Spectra blood cell separator was utilized to collect plasma and cell components from patients' blood, and the replacement fluid and cell components were infused back into patients. Patients received 1 to 3 sessions of plasma exchange. Results Of the 47 patients, 44 (93.62%) achieved satisfactory efficacy with relief of clinical symptoms and improvement of laboratory parameters 2 to 3 days after the plasma exchange. Side effects occurred in 11 (23.4%) patients, which included fever, shivering, numbness of limbs, pruritus and convulsion. Conclusion Plasma exchange is beneficial for the control of severe drug eruption and bullous dermatoses.
8.Research on stability of melittin in different solvent systems.
Ke-xin SHANG ; Jie BAI ; Hui-hao WU ; Yang LU ; Shou-ying DU ; Chang YANG ; Yan-ke CHENG
China Journal of Chinese Materia Medica 2014;39(22):4324-4328
The stability of melittin in different solvents (water, deoxygenated water, physiological saline, PBS, 50% ethanol, ethanol, glycerol)was studied and the results showed that the stability of melittin is not influenced by light, temperature and pH in 50% ethanol, which melittin can be completed dissolved when compared with ethanol and glycerol, in such, 50% ethanol was chosen as solvent storage when measured content of melittin. Then the effect of different concentrations of PBS, the pH of PBS and rat skin ho- mogenates were tested, and the results showed that melittin was degraded rapidly at low concentration solution and low ionic strength. Increasing pH of PBS and rat skin homogenate can accelerate the degradation of melittin. These researches provide an experimental ba- sis for further study of melittin.
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Ethanol
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chemistry
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Hydrogen-Ion Concentration
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Melitten
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chemistry
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drug effects
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Solvents
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chemistry
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Temperature
9.Significance of prognostic evaluation of International Federation of Gynecology and Obstetrics 2009 staging system on stage Ⅰ endometrioid adenocarcinoma
Zhiqi WANG ; Yan ZHANG ; Jianliu WANG ; Danhua SHEN ; Tian MU ; Xin ZHAO ; Yuanyang YAO ; Yun BAI ; Lihui WEI
Chinese Journal of Obstetrics and Gynecology 2012;47(1):33-39
Objective To explore the impact of 2009 International Federation of Gynecology and Obstetrics(FIGO)staging system alteration for stage Ⅰ endometrioid adenocarcinoma on its' prognosis assessing.Methods A retrospective study was carried out on 244 cases with endometrial carcinoma admitted in Peking University People's Hospital from Jan.1995 to Feb.2008.Results(1)All 244 patients were divided into FIGO 2009 Ⅰ a group(n =200)and FIGO 2009 Ⅰ b group(n =44)according to FIGO 2009 staging system,while they were divided into FIGO 1988 Ⅰ a group(n =34),FIGO 1988 Ⅰ b group(n =156)and FIGO 1988 Ⅰ c group(n =29).The others 25 cases were stage Ⅱ a(n =16)and stage Ⅲa with merely positive abdominal cytology(n =9)according to FIGO 1988 staging system.(2)The higher percentage of low-grade in FIGO 1988 Ⅰ a group than that in FIGO 2009 Ⅰ a group(P =0.003).Compared with FIGO 2009 Ⅰ a group,the age of the patients,surgery extent,the percentage of lymph node excision and received chemotherapy and radiotherapy,there were no difference in FIGO 1988 Ⅰ a and Ⅰ b group,respectively(P > 0.05).There were 5.9%(2/34)and 6.7%(10/150)found relapse among FIGO 1988 Ⅰ a group and FIGO 1988 Ⅰ b group,and there were 2.9%(1/34)and 2.7%(4/150)for the two groups died of carcinoma.Compared with FIGO 2009 Ⅰ a group,there were not significant difference[7.5%(13/200)vs.3.0%(6/200);P >0.05].The 5 years and 10 years progression-free survival(PFS)of FIGO 1988 Ⅰ a group and Ⅰ b group were(97.0 ±3.0)%,(90.9 ±6.5)% and(95.3 ±2.1)%,(90.2 ± 3.6)%,respectively,in which there were not significant difference compared with that in FIGO 2009 Ⅰ a group[(96.1 ±1.6)%,(89.6±3.2)% ; P>0.05].The 5 years and 10 years overall survival(OS)in FIGO 1988 Ⅰ a group and Ⅰ b group were 100%,(93.8 ±6.0)% and(96.9 ± 1.8)%,(95.2 ±2.5)%,respectively,in which there were did not significant difference with that in FIGO 2009 Ⅰ a group [(97.9 ± 1.2)%,(93.4 ± 2.8)% ; P > 0.05].(3)There were not significant difference between FIGO 1988 Ⅰ c group and FIGO 2009 Ⅰ b group(P >0.05)for the age of the patients,grade,surgery extent,lymph node excision,the percentage of received chemotherapy and radiotherapy.Between FIGO 1988 Ⅰ c group and FIGO 2009 Ⅰ b group,there were 3.4%(1/29)and 6.8%(3/44)cases found relapse,respectively.And there were 0 and 2.3%(1/44)cases died of carcinoma in the two groups,in which there were not differ much either(P > O.05).The 5 years and 10 years PFS in FIGO 1988 Ⅰ c group were all 100%,while they were 100% and(90.9 ±6.2)% in FIGO 2009 Ⅰ b group.The 5 years and 10 years OS in FIGO 1988 Ⅰ c group were all 100%,but were 100% and(95.0 ±4.9)% in FIGO 2009 Ⅰ b group,in which they all did not significantly differ much(P > 0.05).(4)The patients in FIGO 2009 Ⅰ a group were younger than those in FIGO 2009 Ⅰ b group(P < 0.01).The percentage of low grade in FIGO 2009 Ⅰ a group were higher than that in FIGO 2009 Ⅰ b group(P =0.029).The percentages of received chemotherapy and radiotherapy in FIGO 2009 Ⅰ a group were lower than that in FIGO 2009 Ⅰ b group remarkably(P < 0.01).But there were not significant difference in the uterine excision extent and the percentage of lymph node excision between the two groups(P > 0.05).There were not significantly differ in the relapse rates and the death rates between the FIGO 2009 Ⅰ a group and FIGO 2009 Ⅰ b group(P >0.05).There were also not significant difference in PFS and OS between the two groups(P >0.05).Conclusions There were not significant difference in the prognosis between FIGO 2009 stage Ⅰ a and FIGO 1988 stage Ⅰ a and Ⅰ b.There were also not significant difference in the prognosis between FIGO 2009 stage Ⅰ a and FIGO 2009 stage Ⅰ b,which may be due to received more chemotherapy and radiotherapy in FIGO 2009 stage Ⅰ b patients.
10.A high-fidelity DNA unidirection synthesis method:preliminary exploration
Xun WU ; Yuxia LI ; Beiping LI ; Bingjuan LI ; Dongmei BAI ; Xin ZHANG ; Yan LING ; Wei ZHOU ; Gang LIU ; Huipeng CHEN
Military Medical Sciences 2014;(7):527-531
Objective To establish a simple but quick method to improve the high fidelity of the synthesis of DNA frag -ments.Methods High fidelity DNA unidirection synthesis method (HFUS) was presented and used that involved Phusion DNA polymerase, BsrDⅠrestriction enzymes and λexonuclease.Using the same system at different temperatures , HFUS method synthesized one positive single-strand DNA and several reverse single -stranded DNA one by one into the target DNA fragment.Results Two random sequences DNA fragments of 340 bp and 450 bp were synthesized using HFUS meth-od.Conclusion This article explores a new method for the synthesis of genes .Through the harvest of 450 bp DNA, HFUS may promise to be a new approach to the synthesis of DNA .