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【Objective】 To investigate whether the blood donors' coagulation status may lead to apheresis platelet aggregation in vitro. 【Methods】 Thirty blood donors with aggregation in apheresis platelets collected by AMICUS blood cell separator no less than 3 times previously and occurred when the last time of apheresis donation were observed in aggregated group (referred to as the experimental group); Thirty donors without aggregation in apheresis platelets collected by AMICUS blood cell separator no less than 3 times were observed in the control group simultaneously. The basic platelet parameters in the two groups, including Plt, MPV, PDW, Pet, P-LCR were detected by automatic blood cell analyzer (BC-3000Plus), and thromboelastogram indexes including reaction time(R), kinetics time(K), kinetics of clot development(α), maximum amplitude (MA) and coagulation index(CI) were tested by Thrombosis elastography (TEG) before collection. With SPSS24.0 software, t test was used to compare the differences between the two groups. 【Results】 The CI value in experimental group was significantly different from that of the control group (0.48± 1.00 vs -0.99 ±1.96, P0.05 ) . 【Conclusion】 The coagulation status of blood donors may be an independent risk factor for the in vitro aggregation of apheresis platelets.
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【Objective】 To discuss the influence of apheresis platelets donation mode transformation, from walk-in to appointment, on apheresis platelets donation, donor retention and donation service quality. 【Methods】 The comparative research method is used to compare the number of apheresis platelets donors, blood donation units, rate of first-time blood donation, rate of repeated blood donation, conversion rate of fixed whole blood donors and satisfaction rate before and after the transformation of donation model. Questionnaires were randomly distributed to apheresis platelets blood donors before and after the transformation to study the evaluation of appointment mode. 【Results】 In comparison with walk-in mode, the number of blood donors after adopting the appointment mode was 30 193, with 41.93% (8 920/21 273) increase; number of blood donations was 119 143, with 93.66% (57 622/61 521) increase; platelet donation was 212 717 treatment units, with 103.12% (107 990/104 727) increase; rate of repeated blood donation was 53.56% (16 172/30 193), with 15.43% increase; the number of first-time donors was 15 949, with 57.93% (5 850/10 099) increase; the conversion rate of fixed whole-blood donors was 37.86% (6 039/15 949), with 8.84% increasement; the satisfaction of appointment mode reached 99.81%, with significantly improved satisfaction with blood donation environment and waiting time. 【Conclusion】 The appointment mode of apheresis platelet donation has a promoting role in the increase of apheresis platelets donation, the improvement of solid blood donors and the quality of apheresis platelets donation services.
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Objective:To study the amplification / overexpression of human epidermal growth factor receptor 2 (HER2) in patients with gallbladder cancer, and to analyze the correlation between amplification/overexpression of HER2 with clinicopathological features and survival in patients after R 0 resection. Methods:There were 14 males and 26 females, aged (60.3±8.7) years old and treated at the Cancer Hospital of Chinese Academy of Medical Sciences from January 2011 to December 2016 who met the inclusion criteria of the study. Immunohistochemistry and fluorescence in situ hybridization were used to detect amplification / expression of HER2 in resected tumor tissues. Patients were divided into two groups according to the HER2 gene expression: the HER2-negative group ( n=40) and the HER2-positive group ( n=10). The Chi-square test was used to analyze the relationship between amplification/expression of HER2 and clinicopathological parameters. Patients were followed up by telephone for prognosis. The Kaplan-Meier method was used for survival analysis. The Cox proportional hazard model was used to explore factors affecting prognosis of gallbladder cancer patients. Results:HER2 amplification/overexpression was found in 10 patients with gallbladder cancer, with a positive rate of HER2 being 20.0% (10/50). There was a significant difference in the proportion of patients with vascular tumor thrombus between the HER2 negative group and the HER2 positive group [7.5%(3/40) vs. 30.0%(3/10), P<0.05]. On follow-up, data of 46 patients was available. There were 36 patients in the HER2-negative group and 10 patients in the HER2-positive group. Compared with the HER2-negative group, the median recurrence-free survival (10.10 vs. 75.07 months) and the median overall survival (16.77 vs. 83.07 months) of the HER2-positive group were both significantly lower (both P<0.05) than the HER2-negative group. Univariate analysis showed HER2 positivity to be a risk factor for recurrence-free and overall survival in patients with gallbladder cancer after radical resection. Cox multivariable analysis revealed that lymph node metastasis was an independent risk factor for both recurrence-free ( HR=4.31, 95% CI: 1.92-9.68, P<0.001) and overall survival ( HR=3.44, 95% CI: 1.08-11.00, P=0.037). Conclusion:Amplification / overexpression of HER2 was associated with venous invasion and worse prognosis in patients with gallbladder cancer.
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Objective@#To explore the longitudinal relationship between peer attachment, peer trust and loneliness, and to provide reference for the effective adolescent mental health promotion.@*Methods@#A convenient sampling method was used to select 1 013 first year senior high school students from 2 high schools in Guizhou Province and Shandong Province. A longitudinal design was adopted. The Revised Experiences in Close Relationships relationship Structures Scale(ECR-RS), Trust Scale and University of California at Los Angels Loneliness Scale were administered in Nov. 2020, Dec. 2021(T1), as well as in Jan. 2021 and Jan. 2022(T2).@*Results@#Peer trust at two time points was negatively correlated with attachment anxiety, attachment avoidance and loneliness( r=-0.50--0.17, P <0.01), while attachment anxiety, avoidance and loneliness were positively correlated( r=0.11- 0.41 , P <0.01). T1 attachment anxiety significantly predicted T2 loneliness( β=0.16, P <0.01), and T1 loneliness significantly predicted T2 attachment anxiety and avoidance( β=0.19, 0.15, P <0.01). Correlation between stability of loneliness was higher than attachment anxiety( CR=7.12, P <0.01). Correlation between stability of peer trust was higher than attachment avoidance( CR=2.40, P <0.01).@*Conclusion@#Loneliness affects attachment avoidance and peer trust unidirectionally. There is mutual influence between loneliness and attachment anxiety, with larger impact from loneliness. Intervention aiming for attachment promotion might consider loneliness reduction.
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Objective:To study the efficacy of different systemic chemotherapy regimens as first-line and second-line therapy and to determine the prognostic factors for patients with advanced biliary tract cancer.Methods:The clinical data of patients with advanced biliary tract cancer who underwent systemic chemotherapy in Cancer Hospital of Chinese Academy of Medical Sciences from January 2011 to December 2018 were studied. The efficacy of chemotherapy on objective response rate (ORR) and disease control rate (DCR) were evaluated. Potential prognostic factors for survival were studied using the Cox proportional hazards models.Results:Of 151 patients enrolled into this study, there were 75 males and 76 females, with ages ranging from 31 to 77 years (median 58 years). Two treatment protocols were used: (1) 104 patients received a gemcitabine-based regimen (combined with platinums or fluorouracils) or a combination of platinums and fluorouracils, while (2) 47 patients received a combination of albumin-bound paclitaxel and S-1. The corresponding ORR for each group were 15.4%(16/104) and 27.6%(13/47), respectively, and the DCR were 65.4%(68/104) and 72.3%(34/47), respectively. Of 58 evaluable patients who received chemotherapy as a second-line therapy, 31 patients received the regimen containing gemcitabine, platinums or fluorouracils with an ORR of 3.2% (1/31) and a DCR of 35.5%(11/31); a total of 18 patients received the taxanes-based regimen with an ORR of 11.1%(2/18) and a DCR of 38.9%(7/18); 9 patients received the irinotecan-based regimen with an ORR of 22.2%(2/9) and a DCR of 44.4%(4/9). Univariate analysis showed positive liver metastasis and elevated carbohydrate antigen (CA)19-9 level to be significantly correlated with worse survival outcomes ( HR=1.540, 95% CI: 1.019-2.328, P=0.040 and HR=1.892, 95% CI: 1.123-3.188, P=0.017). Conclusion:For patients with advanced biliary tract cancer, in addition to the conventional regimens containing gemcitabine, platinums and fluorouracils, the combination of albumin-bound paclitaxel and S-1 was shown to be an effective chemotherapeutic regimen for these patients. Second-line chemotherapy was insufficient and ineffective, and an irinotecan-based regimen deserves to be further investigated. Liver metastasis and elevated CA19-9 level were worse prognosis after chemotherapy for patients with advanced biliary tract cancer.
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Objective:To assess the three-dimensional dose distribution in radiotherapy plans using the structural similarity index(SSIM), compare the performance of SSIM with commonly used quality assessment indices, and develop a SSIM-based quality assessment method of multiple prescribed doses.Methods:The SSIM was introduced to providea quality score of various voxels by comparing actual and ideal three-dimensional dose data and combining the spatial location information of the voxels. Then the average value in a region of interest (ROI) was calculated as the quality score of the region. Fifty-three cases of cervical cancer were selected to analyze the correlation of the SSIM with the uniformity index (HI), conformity index (CI) of the dose distribution in various ROIs and to explore the capability of the SSIM to reflect the uniformity and conformity of dose distribution.Two types of quality defects were individually introduced into two of 53 radiotherapy plans. Then the two plans were compared with normal plans to characterize the response of the SSIM.Results:There was no correlation between HI and SSIM in positive lymph nodes(PGTVnd) due to the decrease in the HI sensitivity, while there was a significant negative correlation between them in regions where PGTVnd was removed from the planning target volume(PTV, R=-0.86, P<0.01). Meanwhile, there was a significant positive correlation between CI and SSIM in PGTVnd ( R=0.83, P<0.01). Therefore, the SSIM can be used to identify the artificial design defects in plans by determining abnormal dose gradients. Conclusions:Apart from reducing the defects of previous assessment parameters, the SSIM has the capability to assess the quality of radiotherapy plans by combining the uniformity and conformity of dose distribution and can provide accurate feedback on the spatial locations of quality defects.
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Objective:To explore the relationships between the gut microbiota in patients with cervical and endometrial cancers and the severity of radiation enteritis they suffered during radiotherapy.Methods:Feces samples were collected from 37 patients with cervical or endometrial cancer who received radical radiotherapy (RR) and postoperative radiotherapy (PR). Symptoms were recorded according to the grades of diarrhea and proctitis stated in CTCAE 5.0. The grade of symptoms was considered a high grade (HG) in the case of ≥ 2 and a low grade (LG). The 16S rRNA sequencing technology was used for DNA analysis of the samples.Results:The α diversity of gut microbiota was significantly higher in patients with LG symptoms (LG group) than that in patients with HG symptoms (HG group, P<0.05) and the β diversity also differed between the two groups (stress<0.2) before radiotherapy. Meanwhile, the Ruminococcus gnavus was significantly higher in the HG group than that in the LG group before radiotherapy ( P<0.05), and thus it may serve as a biomarker for the prediction of the severity of radiation enteritis in the patients before radiotherapy. The gut microbiota in the LG and HG groups showed different changes after three weeks of radiotherapy. In addition, RR patients showed higher gut microbiota diversity and less severe radiation enteritis than PR patients. Meanwhile, Faecalibacterium prausnitzii was significantly higher in RR patients than that in PR patients before radiotherapy ( P<0.05), which may correlate negatively with radiation toxicity. Conclusions:The characteristics of gut microbiota in patients with cervical and endometrial cancers were closely related to the severity of radiation enteritis they suffered during radiotherapy. Furthermore, prior treatment such as surgery might reduce radiation tolerance of the patients.
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Objective@#To explore the efficacy and prognostic factors of hematopoietic stem cell transplantation (HSCT) for the treatment of patients with anaplastic large cell lymphoma (ALCL) .@*Methods@#The clinical records of 33 ALCL patients after HSCT were collected and analyzed retrospectively to evaluate the rates of overall survival (OS) and recurrence after autologous (auto-HSCT) and allogeneic HSCT (allo-HSCT) and the factors influencing prognosis.@*Results@#The median-age of this cohort of 33 ALCL cases at diagnosis was 31 (12-57) years old with a male/female ratio of 23/10, 24 cases (72.7%) were ALK+ and 9 ones (27.3%) ALK-. Of them, 25 patients (19 ALK+ and 6 ALK-) underwent auto-HSCT and 8 cases (5 ALK+ and 3ALK-) allo-HSCT with a median follow-up of 18.7 (4.0-150.0) months. Disease states before HSCT were as follows: only 6 patients achieved CR status and received auto-HSCT, 16 patients achieved PR (14 cases by auto-HSCT and 2 ones allo-HSCT) , the rest 11 cases were refractory/relapse (5 cases by auto-HSCT and 6 ones allo-HSCT) . There were 7 cases died of disease progression (5 after auto-HSCT and 2 allo-HSCT) and 5 cases treatment-related mortality (TRM) (2 after auto-HSCT and 3 allo-HSCT) , TRM of two groups were 8.0% and 37.5%, respectively. Both the median progression-free survival (PFS) and OS were 15 months after auto-HSCT, the median PFS and OS after allo-HSCT were 3.7 (1.0-90.0) and 4.6 (1.0-90.0) months, respectively. There was no statistically significant difference in terms of survival curves between the two groups (OS and PFS, P=0.247 and P=0.317) . The 2-year OS rates in auto-HSCT and allo-HSCT groups were 72% and 50%, respectively. The 5-year OS rates in auto-HSCT and allo-HSCT groups were 36% and 25%, respectively.@*Conclusion@#ALCL treated by chemotherapy produced high rates of overall and complete responses. Chemotherapy followed by auto-HSCT remained to be good choice for patients with poor prognostic factors. High-risk patients should be considered more beneficial from allo-HSCT.
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Objective@#To investigate milk consumption and associated factors in the national pilot counties of Nutrition Improvement Programme for Rural Compulsory Education Students (NIPRCES) in 2016, and to provide basic data for milk consumption improvement.@*Methods@#Two primary and middle schools in each county were selected randomly from 50 key monitoring counties in 22 provinces in NIPRCES by three food supply modes (school-based, company-based, and others). Then 1 or 2 classes in each grade were selected randomly from grade 3 or above and junior schools. A total of 25 948 students were collected, milk consumption and related factors were investigated through student questionnaires.@*Results@#Among the students surveyed, the proportion of students drank 1 to 3 packs of milk every week was highest (45.4%), only 29.1% students drank 4 or more packets of milk per week. The proportion of children in grades 3 and 4 who drank 4 or more packets of milk per week (35.7%) was higher than that of children in grades 5 and 6 (31.8%) and junior school (22.5%)(P<0.01). The proportion of boys who drank 4 or more packs of milk per week (30.7%) was higher than girls (27.5%) (P<0.01). Multivariate Logistic regression analysis showed that boys, primary school students in grades 3 to 6, non-resident students, students with both parents or one parent at home, students who had more meals per day, students who had breakfast every day, students who took snacks or drank beverages once or more per day, students who drank 4 or more cups of boiled water were more likely to drink 4 or more packs of milk each week.@*Conclusion@#Students in poor rural areas in China lack access to milk. It is recommended that targeted measures should be taken to encourage and promote rural students to drink enough milk.
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Lung transplantation is increasingly practiced for patients with end-stage lung disease. The successful outcome of solid organ transplantation today is severely impeded by the production of alloantibodies, mainly directed against the protein products of the HLA complex of the organ donor. While the association between antibody mediated rejection and allograft damage has been well established in renal and heart transplantation, it has not yet been well characterized in lung transplantation. This review addresses the question of HLA matching in lung transplantation and current knowledge of the allogenicity of different HLA class I and II antigens. The role of the antibody mediated immune response is discussed as well as the importance of pre-transplant or de novo post-transplant circulating antibodies. Finally, potential mechanisms, which may act individually or in combination, of antibody mediated damage to solid organ transplants are considered.
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Compared with other tumors of digestive system such as colorectal cancer, the overall survival for advanced biliary tract carcinoma has not been prolonged greatly although some progress has been made on the optimization of the treatment. One of the reasons is that there is no effective chemotherapy for biliary tract cancer yet. In this review, we summarized the recent research findings on chemotherapy for BTC , thereby providing guidance on clinical practice.
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Objective@#To evaluate clinical outcomes of autologous (auto-HSCT) and allogeneic hematopoietic stem cell transplantation (allo-HSCT) for angioimmunoblastic T-cell lymphoma (AITL) .@*Methods@#From June 2007 to June 2017, clinical data of AITL patients who underwent HSCT in eight hospitals were assessed retrospectively.@*Results@#Of 19 patients, 13 male and 6 female with a median age of 50 (32-60) years old, 12 auto-HSCT and 7 allo-HSCT recipients were enrolled in this study, all donors were HLA-identical siblings. Two of allo-HSCT recipients were relapsed auto-HSCT ones. There were 5 patients (5/12) in complete response (CR) status and 7 (7/12) in partial remission (PR) status before transplantation in auto-HSCT group, and 2 (2/7) in PR status and 3 (3/7) in progression disease (PD) status before transplantation in allo-HSCT group. The median follow-up for the surviving patients was 46.5 months (range, 1-100 months) for the whole series, two patients lost in auto-HSCT group. Three patients developed acute graft-versus-host disease (aGVHD) and 5 chronic graft-versus-host disease (cGVHD) after allo-HSCT. Three patients died of primary disease and 1bleeding in auto-HSCT group. One patient died of primary disease and 2 transplantation-related mortality in allo-HSCT group. The 3-year cumulative overall survival (OS) were 56% (95%CI 32%-100%) and 57% (95%CI 30%-100%) for auto-HSCT and allo-HSCT, respectively (P=0.979) . The 3-year cumulative progression-free survival (PFS) were 34% (95%CI 14%-85%) and 57% (95%CI 30%-100%) for auto-HSCT and allo-HSCT, respectively (P=0.451) .@*Conclusion@#Both auto-HSCT and allo-HSCT were optimal choices for AITL. In clinical practice, which HSCT was better for AITL patients should be based on comprehensive factors including sensitivity to chemotherapy, risk stratification and disease status at transplantation.
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Objective To investigate the potential value of pre-treatment dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) in predicting long-term survival of cervical cancer treated by concurrent chemoradiotherapy. Methods Uterine cervical cancer patients who received chemo-radiation therapy during 2008 to 2014 in a single institute were retrospectively collected and followed up. Pre-treatment DCE-MRI images were retrieved to generate four hemodynamic related parameters including positive enhancement integral (PEI), maximum slop of increase (MSI), maximum slope of decrease (MSD) and signal enhancement ratio (SER). Region of interests were drawn manually on T2WI along the rim of tumors on each slice, and were then registered to DCE-MRI parametric maps. Histogram analysis software was used to calculate the mean, median, maximum, minimum,10th percentile, 90th percentile, kurtosis and skewness values for each DCE-MRI parameters. Median follow-up time was 54.7 months (range 2.1 to 94.6 months). Uni-and multivariable Cox regression analyses were used to evaluate correlation between the above values and the disease free survival (DFS). Kaplan-Meier curve was used to evaluate survival time. Results Of the 75 patients, 16 of them died from cervical cancer, 3 patients had metastasis, and 1 patient continued to progress. Median, mean, 10th and 90th percentile from MSI, and minimum, kurtosis, skewness were the influencing factors of disease-free survival of cervical cancer with concurrent chemoradiotherapy (P<0.1) Pearson relationship analysis and multivariable Cox regression analysis was performed which indicated PEI kurtosis value of cervical cancer was an independent influencing factor for cervical cancer without disease survival (hazard ratio 1.658, P=0.001). Conclusion PEI kurtosis was an independent factor for DFS of locally advanced cervical cancer treated with concurrent chemoradiotherapy.
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Although chemotherapy is ineffective for advanced biliary tract carcinoma (BTC),a series of early-stage researches have been exploring new strategies in biliary tract carcinoma,including targeted therapy and immunotherapy.Agents targeting EGRF and HER-2 pathway,multi-targeted small molecule inhibitors and MEK inhibitors have demonstrated efficacy as later-line treatment in advanced BTC.Moreover,novel targeted agents such as IDH inhibitors and FGFR inhibitors are promising treatment strategies.The effect of immunotherapy in BTC is encouraging,which worth further study.In this review,we summarized the results of these researches and direction for future development of BTC,thereby providing guidance on clinical practice.
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Objective To discuss the maximum tolerated dose of oxaliplatin based on 5-fluorouracil derivative in patients with locally advanced rectal cancer who underwent neoadjuvant chemoradiotherapy.Methods From Mar 2015 to Oct 2015,15 locally advanced rectal cancer patients (T3,T4/N +) who received intensity modulated radiotherapy and concurrent chemotherapy with capecitabine and oxaliplatin were enrolled in this study.The prescription dose was 50.6 Gy for gross tumor volume(GTV) and 41.8 Gy for clinical tumor volume(CTV) in 22 fractions within 30 d with concomitant boost.There were four dose-level groups of oxaliplatin as 100,110,120 and 130 mg/m2 tri-weekly and fixed capecitabine dose (825 mg/m2 bid d1-5 per week).The first 12 patients were randomly assigned into 4 groups.For the 130 mg/m3 group,another 3 patients were enrolled because of dose-limiting toxicity (DLT).Treatment related toxicities and response rates were evaluated.Results The most common adverse events(AE) were radiation enteritis,skin reactions,nausea,fatigue,urinary system AE and bone marrow suppression.There was a trend of increase by the dose level of oxaliplatin for toxicities.Groups 100,110 and 120 mg/m2 had none DLT,while group 130 mg/m2 had 1 patient for grade 3 thrombopenia and 1 patient for grade 3 nausea.Postoperative pathology showed that all patients achieved tumor downstaging,among which 0,1,2,3 cases achieved complete remission of the four groups,respectively.Conclusions The combination regimen of capecitabine and oxaliplatin is safe and effective according to the preliminary results.The maximum tolerated dose of oxaliplatin was 130 mg/m2 tri-weekly.
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<p><b>OBJECTIVE</b>To compare the efficacy of laparoscopic versus open tension-free mesh repair using biologic mesh for inguinal strangulated hernia.</p><p><b>METHODS</b>Clinical data of 27 patients with inguinal strangulated hernia in the Shanxi Provincial People's Hospital between January 2012 and April 2014 were analyzed retrospectively. All the patients underwent one-stage tension-free repair using biological mesh, including laparoscopic(n=13) and open procedures(n=14).</p><p><b>RESULTS</b>As compared with the open group, the laparoscopic group had shorter operative time [(90.8±11.6) min vs. (130.8±32.5) min, P<0.01], lower rates of hematoma/seroma and wound infection[(7.7% vs. 42.9%) and (0 vs. 28.6%) respectively, both P<0.05], faster recovery of bowel function [(2.5±0.3) d vs. (3.8±1.4) d, P<0.01], and shorter hospital stay [(6.3±1.8) d vs. (9.8±3.2) d, P<0.01]. The mean follow-up was 5.7 months (ranged from 2 to 12 months), and no recurrence or serious complications occurred.</p><p><b>CONCLUSION</b>Laparoscopic tension-free hernia repair using biological mesh for inguinal strangulated hernia has significant advantage versus open operation.</p>
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Objective To analyze the possibility of using TCR Vβsubfamily as the diagnostic in-dicators for major histocompatibility complex( MHC) deficiency-induced graft-versus-host disease( GVHD) . Methods The BALB/c mice were given 9.5 Gy (950 rad) of irradiation and transplanted with 106 of T-cell depleted (TCD) bone marrow cells from C57BL/6 and DBA/2 mice with MHC Ⅱ deficiency.Two control groups were set up accordingly by injection of TCD bone marrow cells from wild type ( WT) C57BL/6 and DBA/2 mice.Several parameters including the body weight, the GVHD clinical score and the survival time of the recipients were monitored.Flow cytometry analysis and mixed lymphocyte culture test were performed for the evaluation of autoimmune responses.Histological examination was used to analyze the severity of GVHD.Results The MHC deficiency-induced GVHD was successfully induced in the irradiated BALB/c mice receiving MHC mismatched allogeneic hematopoietic cell transplantation ( allo-HCT ) . The MHC matched DBA/2 mice with MHC deficiency could be used as the mice model of subclinical GVHD.Changes of the TCR Vβ6 were consistent with the results of histopathological examination.Conclusion Highly ex-pressed TCR Vβ6 could be used as indicators for the diagnosis of MHC deficiency-induced subclinical GVHD.
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Objective To evaluate the efficacy and toxicities of intensity modulated radiation therapy (IMRT) with or without concurrent chemotherapy in the treatment of cervical cancer patients with para-aortic lymph node (PALN) metastases after initial treatment.Methods From Oct 2008 to Aug 2013,56 cervical cancer patients with PALN metastases after initial treatment,including radical resection or pelvic radiotherapy/chemoradiotherapy,were selected for analysis.The delivered radiation dose to PALN was 55-60 Gy for GTV and 45-50 Gy for CTV respectively with 25-30 fractions during 5-6 weeks.36 patients received concurrent paclitaxel (135 mg/m2) and cisplatin (60 mg/m2) chemoradiotherapy (CRT group) and 20 patients received RT alone (RT group).Results The median follow-up time after treatment was 22.7 months (2.7 to 74.4 months).98.2％ (55/56) of patients completed RT.In CRT group,38.9％ underwent concurrent TP regimen 2-3 cycles and the rest completed one cycle.The rates of CR plus PR in CRT and RT groups were 91.7％ (33/36) and 85％ (17/20),respectively (x2 =0.516,P ＞0.05).The 3-year overall survival rate in CRT group and RT group were 57.5％ and 32.7％ (x2 =4.059,P ＜ 0.05),and 3-year progression-free survival rates were 50.4％ and 29.2％ (x2 =4.184,P ＜ 0.05),respectively.TP regimen concurrent chemoradiotherapy was more effective than radiotherapy alone.The 3-year overall survival rate was 53％ and 39.5％ in patients with isolated PALN and nonisolated PALN,respectively (x2 =4.265,P ＜ 0.05).Grade 3 or 4 acute leukopenia was found in 10 (27.8％,CRT group) and 6 (30％,RT group) patients (x2 =0.693,P ＞ 0.05).Grade 3 gastrointestinal toxicity occurred in 1 patient each group (x2 =0.847,P ＞ 0.05).Conclusions TP regimen concurrent CRT is associated with better survival than RT alone,and the treatment toxicities could be tolerant.
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Objective To search for chemical constituents with anti-oxidative activity from seeds of Jatropha curcas.Methods DPPH radical scavenging assay was used to screen fractions or constituents with anti-oxidative activities.Active fractions were separated by varied chromatography and then identified on the basis of physiochemical properties and spectroscopic methods.Results The n-butanol layer of ethanol extract from the seeds of J.curcas showed stronger activity than other fractions and was studied further.A new compound was isolated from this active layer, and its structure was identified as jatrophasin A (3,4,4',5'-tetrahydroxyl-3'-methoxyl-bisepoxylignan, 1).It showed stronger anti-oxidative activity compared with resveratrol.Conclusion Compound 1 is a new compound which has never been reported with strong anti-oxidative activity.
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Amphibian skin antimicrobial peptides exhibit a broad spectrum of antimicrobial activity against Gram-positive and Gram-negative bacterium and cytotoxic activity responsible for inhibiting the growth of cancer cells. In this present study, six cDNAs encoding antimicrobial peptide precursors were cloned from the skin of Chinese brown frog, Rana chensinensis by RT-PCR and 3'-RACE procedure and identified as preprotemporin-1CEa, preprotemporin-1CEb, preprotemporin-1CEc, preprobrevinin-1CEa, preprobrevinin-1CEb, and preprochensinin-1, respectively. The nucleotide sequences of cDNA encoding 59-65 amino acid composed of 289-315 bp. Preprotemporin-1CEa, preprotemporin-1CEb and preprotemporin-1CEc are members of temporin family, which usually are short, hydrophobic, and C-terminally alpha-amidated antimicrobial peptides. Preprobrevinin-1CEa and preprobrevinin-1CEb were identified as the members of the brevinin-1 family of antimicrobial peptides since both peptides contain "RANA box" that it's responsible for forming Cys-bridged cyclic heptapeptides at the C-terminal region of peptide. The nucleotide acid sequence and the deduced amino acid Sequence of preprochensinin-1 were not found to be identity with any known amphibian skin defensive peptides, so, preprochensinin-1 was identified as a novel peptide precursor. Four of bioactive peptides: temporin-1CEa, temporin-1CEb, brevinin-1CEa and chensinin-1 were synthesized to investigate their antimicrobial, anticancer and haemolysis activities. The results showed that all of the synthesized antimicrobial peptides in this study inhibited the growth of the Gram-positive bacterium, and exhibited the anticancer activity against the growth of MCF-7 cells and HeLa cells. Analysis of the R. chensinensis bioactive peptides and their gene expression will be beneficial for preservation of this species.