OBJECTIVE:To study the factors influencing the stability of Chlorogenic acid in Marsdenia tenacissima extract.METHODS:The contents of Chlorogenic acid in Marsdenia tenacissima extract in different solvents,different lighting and different time under the heat were determined by HPLC.RESULTS:The Chlorogenic acid in Marsdenia tenacissima extract in organic solvents was more stable,in addition,lighting and heating temperature were important factors affecting the stability of the Chlorogenic acid.CONCLUSION:The stability of the Chlorogenic acid in Marsdenia tenacissima extract changes in different conditions;and the study results serve as a reference for the preparation,storage,analysis and production of Marsdenia tenacissima extract.

Silk fibroin (SF) and hydroxyapatite (HA) composite powders were synthesized from CaO, H3PO4 and SF solution on the principle of neutralization. SF/HA porous materials were prepared through adding silk short fibers and NaCI particles as reinforcing material and pore-forming agent respectively by isostatic compaction. The structure and mechanical properties of the SF/HA porous materials were investigated. Results indicated that short silk fibers in it could markedly enhance flexural strength and flexural breaking energy. The average pore diameter and porosity could be regulated from 64 μm to183 pm and from 55% to 75% respectively by adding pore-forming agent.

Objective To investigate the clinical manifestation, diagnosis, therapies and medical economics of cesarean scar pregnancy (CSP). Methods From Jan. 2005 to Dec. 2008, 96 patients with CSP treated in Obstetrics and Gynecology Hospital of Fudan University were studied retrospectively. Those cases were divided into 3 groups. Thirty-three patients were treated with methotrexate (MTX) 50 mg/m2 intravenously guttae in group A. Among that 18 cases were treated with MTX, after 5 - 10 days they underwent dilation and curettage of uterus; 15 cases were given by dilation and curettage first if the level of serum human chorionic gonadotrophin-β(β-hCG) descent less than 30% in every 48 hours for 3 times after curettage, then MTX (50 mg/m2) intravenously guttae. Sixty patients were treated with MTX 100 mg bilateral uterine artery injection and embolization in group B. After 2 days, they underwent curettage.Group C: 3 patients were treated with laparotomy lesion excision. The following clinical parameters were compared, including blood loss( M), lesion diameter (-x±s), blood β-hCG level (M)before treatment, the number of cases with myometrial thickness anterior to the CSP ≤3 mm, the resistant index (RI) ≤0. 5,expense(-x ± s), hospital days(-x ±s) in those 3 groups. The correlation of blood loss with lesion diameter and blood β-hCG level was studied. Results ( 1 ) Clinical manifestation: bleeding loss were 20 ml in MTX +curettage of group A, 10 ml in curettage + MTX of group A, 12 ml in group B and 200 ml in group C. The volume of bleeding loss in group C was significantly higher than those in group A or group B ( P ＜ 0. 01 ).The lesion diameter were ( 23 ± 15 ) mm in curettage + MTX of group A and ( 30 ± 14 ) mm of group B ,which were higher than ( 16 ± 8 ) mm of MTX + curettage of group A (P ＜ 0. 01 ). The lesion diameter of (52 ± 7 )mm in group C were significantly bigger than those in the other groups ( P ＜ 0. 01 ). The level of blood β-hCG levels were 21 592 U/L in MTX + curettage of group A, 979 U/L in curettage + MTX of group A,which reach statistical difference ( P ＜0. 05). The level of blood β-hCG levels were 11 312 U/L in group B and 101 U/L in group C. Among 28 cases with Rl≤0. 5,there was 8 cases in group A (24% ,8/33),18 cases in group B ( 30%, 18/60) and 2 cases in group C (2/3). Among 23 cases with myometrial thickness anterior to the CSP ≤ 3 mm, there was 21 cases in group B (35%, 21/60 ), which were significantly higher than 2 in group A (6%, 2/33 ) and none in group C ( P ＜ 0. 05 ). The expense were ( 5578 ± 3679) yuan in MTX + curettage of group A and (5346 ± 2765 ) yuan in curettage + MTX of group,which did not reach statistical difference (P＞0. 05). The expense were (7860 ±2104) yuan in group B,which were significantly higher than those in group A and (5004 ± 421 ) yuan in group C (P ＜ 0. 05 ). The hospital days were ( 15 ±8) days and ( 19 ± 14) days of group A, ( 16 ± 10) days in group B and ( 17 ±8)days in group C, there was no significant difference among those treatments ( P ＞ 0. 05 ). (2) Correlatin:there was positive correlation between bleeding loss and lesion diameter( r = 0. 31, P ＜ 0. 05 ) or blood β-hCG level ( r = 0. 35, P ＜ 0. 05). Conclusions MTX intravenously guttae, MTX uterine artery injection and embolization, and laparotomy lesion excision were all properly used in treatment of CSP. MTX uterine artery injection and embolization was recommended for those with big lesion, high β-hCG level, less myometrial thickness anterior to the CSP or plentiful blood supply of the lesion but the expense might be high.

On the basis of Poincare scatter plot and first order difference scatter plot, a novel heart rate variability (HRV) analysis method based on scatter plots of RR intervals and first order difference of RR intervals (namely, RdR) was proposed. The abscissa of the RdR scatter plot, the x-axis, is RR intervals and the ordinate, y-axis, is the difference between successive RR intervals. The RdR scatter plot includes the information of RR intervals and the difference between successive RR intervals, which captures more HRV information. By RdR scatter plot analysis of some records of MIT-BIH arrhythmias database, we found that the scatter plot of uncoupled premature ventricular contraction (PVC), coupled ventricular bigeminy and ventricular trigeminy PVC had specific graphic characteristics. The RdR scatter plot method has higher detecting performance than the Poincare scatter plot method, and simpler and more intuitive than the first order difference method.
Arrhythmias, Cardiac ; Databases, Factual ; Heart Rate ; Humans ; Ventricular Premature Complexes

Objective To observe the change in IL-1β,IL-13mRNA expression in drowning rat lungs and serum,so as to investigate the significance of IL-1β and IL-13 mechanism in the development of drowning.Methods SD rats were randomly divided into control group,drowning group.Then using TaqMan probe method to determine the expression of IL-1β and IL-13 mRNA in Right lower lobe of lung tissue and the serum of right ventricle,which were extracted respectively from each group of rats.Results (1) The lung tissue morphological changes:Typical appearance signs and anatomy of drowning group meet ante-mortem drowning feature.(2) The expression of IL-1β,IL-13 in lung tissue:compared with the control group,the expression of IL-1β and IL-13 were slightly decreased,which has no statistical significance.(3) The expression of IL-1β and IL-13 in serum:compared with the control group,the expression of IL-1β and IL-13 were significant increased,both of which has statistical significance.Conclusion (1)The expression of IL-1β and IL-13 were decreased in lung tissue may be due to drowned rats present compensatory anti-inflammatory response syndrome which causes immune incompetent performance.(2) The expression of IL-1β and IL-13 were significant increased in serum may be relate to drown stress and drowning associated acute lung injury after traumatic stress.

Predicting the termination of paroxysmal atrial fibrillation (AF) may provide a signal to decide whether there is a need to intervene the AF timely. We proposed a novel RdR RR intervals scatter plot in our study. The abscissa of the RdR scatter plot was set to RR intervals and the ordinate was set as the difference between successive RR intervals. The RdR scatter plot includes information of RR intervals and difference between successive RR intervals, which captures more heart rate variability (HRV) information. By RdR scatter plot analysis of one minute RR intervals for 50 segments with non-terminating AF and immediately terminating AF, it was found that the points in RdR scatter plot of non-terminating AF were more decentralized than the ones of immediately terminating AF. By dividing the RdR scatter plot into uniform grids and counting the number of non-empty grids, non-terminating AF and immediately terminating AF segments were differentiated. By utilizing 49 RR intervals, for 20 segments of learning set, 17 segments were correctly detected, and for 30 segments of test set, 20 segments were detected. While utilizing 66 RR intervals, for 18 segments of learning set, 16 segments were correctly detected, and for 28 segments of test set, 20 segments were detected. The results demonstrated that during the last one minute before the termination of paroxysmal AF, the variance of the RR intervals and the difference of the neighboring two RR intervals became smaller. The termination of paroxysmal AF could be successfully predicted by utilizing the RdR scatter plot, while the predicting accuracy should be further improved.
Atrial Fibrillation ; diagnosis ; Computer Systems ; Heart Rate ; Humans ; Machine Learning

Objective To investigate the influence of gonadotropin-releasing hormone (GnRH) analogues on ovarian cancer and ovarian function in vivo.Methods ES-2 cells were cultured and xenotransplanted into 36 nude mice,which were divided into 6 groups:normal saline (NS) group:NS 0.1 nd/day subcutaneous injection,and then NS 0.2 ml/week peritoneal injection; cisplatin (DDP) group:NS 0.1 ml/day subcutaneous injection,and then DDP 5 mg/kg ( diluted to 0.2 ml ) per week peritoneal injection; goserelin group:100 μg goserelin ( diluted to 0.1 ml) per day subcutaneous injection,and then NS 0.2 ml/week peritoneal injection; goserelin + DDP group:100 μg goserelin ( diluted to 0.1 ml) per day subcutaneous injection,and DDP 5 mg/kg (diluted to 0.2 ml) per week peritoneal injection; cetrorelix group:100 μg cetrorelix (diluted to 0.1 ml) per day subcutaneous injection and NS 0.2 ml/week peritoneal injection; cetrorelix + DDP group:100 μg cetrorelix (diluted to 0.1 ml) per day subcutaneous injection and DDP 5 mg/kg ( diluted to 0.2 ml) per week peritoneal injection.All the peritoneal injection started from subcutaneous injection one week later.To compare the weight of nude mice,the volumes of transplanted tumors,the expression of Ki-67 antigen in transplanted tumors,the estrus,the ratio of atretic follicles,the ratio of primary and preantral follicles,the levels of serum anti-Mullerian hormone ( AMH ),folliclestimulating hormone ( FSH),estradio ( E2 ) and progesterone (P) in each group.Results There were no significant difference in the weight of nude mice among 6 groups ( P ＞ 0.05 ),which on day 29 in NS group was ( 19.8 ±2.2) g,DDP group (20.5 ± 1.4) g,gosereline group ( 19.6 ±0.9) g,goserelin + DDP group ( 19.7 ± 1.6) g,cetrorelix group (20.7 ±2.2) g,and cetrorelix + DDP group ( 19.0 ± 1.7) g.The tumor volumes of different groups on the 12th day:NS group (241 ± 179) mm3,DDP group (78 ±20) mm3,gosereline group (78 t±55) mm3,goserelin + DDP group (64 ±48) mm3,cetrorelix group (78 ±64) mm3,or cetrorelix + DDP group (70 ± 19) mm3,in which there were significant difference between NS group and the other groups ( P ＜ 0.05 ) ; and the same result was obtained on day 15,19,22,26 and 29 ( P ＜ 0.05 ).The expression of Ki-67 in NS group was ( 33 ± 10 ) ％,in which it was higher than those in DDP group 3.5％,goserelin group 8.8％,goserelin + DDP group 1.5％,cetrorelix group (23 ± 11 ) ％,or cetrorelix + DDP group ( 8 ± 6 ) ％ ( P ＜ 0.05 ).The ratio of primary and preantral follicles in goserehn group was (71.5 ± 8.1 ) ％,in goserelin + DDP group was (62.4 ± 4.1 ) ％,in cetrorelix group was (71.2 ± 7.4) ％,and in cetrorelix + DDP group was (63.8 ±3.1 )％,in which they were much higher than that in DDP group ( 47.0 ± 4.8 ) ％ ( P ＜ 0.05 ).The level of AMH in goserelin group was ( 98 ± 27 ) ng/ml,which was much higher than that in NS group (66.2 ± 17.4) ng/ml (P ＜0.05),while there were no difference in the levelsof FSH,E2 or P among different groups ( P ＞ 0.05).Conclusion GnRH analogues could inhibit the growth of transplanted tumors in nude mice,meanwhile increase the secretion of AMH,decrease the frequencies and prolong the lasting time of estrus,decrease the ratio of atretic follicles,raise the ratio of primary and preantral follicles,which may be protect the ovarian function of nude mice.

Objective To compare the fatigue characteristics between people with fatigue-predominant sub-health and patients with ulcerative colitis.Methods Fatigue Self-assessment Scale (FSAS) was applied in people with fatigue-predominant sub-health and patients with ulcerative colitis.By using the multivariate statistical analysis,the fatigue characteristics of them were analyzed.Results The fatigue characteristics of two groups of people were different.The scores of physical fatigue,mental fatigue,fatigue consequences,total fatigue,reaction of fatigue after sleep and rest,situation of fatigue in people with fatigue-predominant sub-health were 31.06 ± 17.08,24.63 ± 14.50,24.38±13.39,26.36 ± 11.97,30.63 ± 22.70,42.89 ± 21.47,and in patients with ulcerative colitis were 25.60 ± 22.98,17.80 ± 18.44,20.54 ± 18.53,21.20 ± 17.15,18.18 ± 25.47,41.21 ± 25.70.There were statistical differences on the two groups (P ＜ 0.05 ).There were statistical differences between the percents of four degrees ( unconspicuous,mild,moderate,heavy) of physical fatigue,mental fatigue,fatigue consequences between in people with fatigue-predominant sub-health and in patients with ulcerative colitis (P ＜ 0.05 ).There were statistical differences on the percents of five degrees ( no obvious,slightly,less obvious,obvious,very obvious) of unrelieved fatigue after sleep and rest,situation of fatigue between in people with fatigue-predominant sub-health and in patients with ulcerative colitis (P ＜ 0.05 ).Conclusion The type,severity of fatigue,and characteristics ( such as unrelieved fatigue after sleep and rest,situation of fatigue) are different between people with fatigue-predominant sub-health and patients with ulcerative colitis.

ObjectiveTo evaluate the implication of ultrasonographic features of primary breast cancer tumors and axillary lymph nodes in predicting axillary lymph nodes metastasis in patients with breast cancer.MethodsA total of 108 patients with breast cancer were underwent examination of primary breast tumors and axillary lymph nodes by high frequency linear-array probes of ultrasound.The ages of patients,locations of primary tumors,numbers of tumors,maximum diameters of tumors,the longitudinal transverse axis ratio of tumors,mass boundary,ultrasonic patterns,micro-calcification,classification of blood supply,color pixel density(CPD),peak systolic velocity,resistance index,the longitudinal transverse axis ratio of axillary lymph nodes and maximum cortical thickness of axillary lymph nodes were recorded.ResultsOut of 108 patients with breast cancer,the longitudinal transverse axis ratio of tumor were greater than 1 in 75 (69.4 ％ ),micro-calcification in 57(52.8 ％ ),classification of blood supply were Ⅱ - Ⅲ in 57 (52.8％ ),CPD were greater than or equal to 10％ in 48 (44.4％),maximum cortical thickness of axillary lymph node were greater than or equal to 3 mm in 51 (47.2％),and longitudinal transverse axis ratio of lymph nodes were less than 1.5 in 59 (54.6％).Univariate analysis revealed that these six parameters were correlated to the axillary lymph node metastasis in breast cancer ( P ＜0.05).However,ages of patients,location of tumor in the breast,numbers of tumors,maximum diameters of tumors,mass boundary,ultrasonic patterns,peak systolic velocity and resistance index were not related to the axillary lymph node metastasis( P ＞0.05).Multivariate logistic regression analyses showed that CPD (OR:16.337,95％ CI:4.537- 58.826),longitudinal transverse axis ratio of lymph nodes (OR:3.754,95％ CI:1.269- 11.108) and microcalcificationand (OR:3.033,95 ％ CI:1.040 - 8.840) were risk factors of axillary lymph nodes metastasis in patients with breast cancer.ConclusionsThe application of ultrasonography in patients with breast cancer is useful in predicting axillary lymph nodes metastasis.

Objective To understand the changes of schistosomiasis endemic situation in Sichuan Province,the upstream of Yangtze River basin,and the impact on schistosomiasis transmission in Three Gorges Reservoir area after the construction of Three Gorges Reservoir. Methods The annual reports of the schistosomiasis endemic situation in Sichuan Province from 2000-2012,the data of the schistosomiasis surveillance sites in Sichuan Province from 2001-2012,the data of the schistosomiasis sampling survey in Sichuan Province in 2001,and the relevant reference of Three Gorges Reservoir were collected. The schisto-somiasis prevalence in human and cattle,and Oncomelania hupensis snail status were investigated. The snail survey was imple-mented in Qianjin Village,Jianyang City,Sichuan Province,the nearest village to Three Gorges Reservoir Area. Results The schistosomiasis endemic situation presented a continuous declining state in Sichuan Province from 2000-2012,and reached the criteria of schistosomiasis transmission controlled in 2008. From 2012,65.07%of endemic counties reached the criteria of schis-tosomiasis transmission interrupted. From 2006,no schistosome infected snails were found. In Qianjin Village,1714 m2 environ-ments were surveyed and no snails were found. Conclusions The schistosomiasis endemic area and snail area are significantly reduced in Sichuan Province,the upstream of Yangtze River basin,after the construction of Three Gorges Reservoir. Therefore, the possibility of schistosomiasis endemic diffusing to Three Gorges Reservoir area is minimum.