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Objective:To investigate predictive value of model based on pre-surgical 18F-FDG PET/CT metabolic parameters for mediastinal lymph node metastasis (LNM) in lung adenocarcinoma. Methods:A total of 288 patients with lung adenocarcinoma (135 males, 153 females, age (61.6±8.5) years) who diagnosed and treated in the Fourth Hospital of Hebei Medical University from January 2016 to February 2021 were enrolled retrospectively. All patients underwent 18F-FDG PET/CT examination within 1 month before operation, and underwent complete resection of primary lung tumor and standard lymph node dissection. PET/CT parameters were extracted (PET metabolic parameters: minimum SUV(SUV min), SUV max, SUV mean, SUV standard deviation (SUV std), metabolic tumor volume (MTV) and total lesion glycolysis (TLG); CT parameters: minimum CT value (HU min), maximum CT value (HU max), mean CT value (HU mean), CT value standard deviation (HU std)). Multivariate logistic regression analysis was used for screening parameters and establishing model to predict LNM. ROC curves analyses were used to evaluate the predictive performance of models. Results:Among 288 patients, 90 had LNM, and 361 metastatic lymph nodes (N1: 186, N2: 175) were reported by pathology. SUV min (odds ratio ( OR)=1.859, 95% CI: 1.074-3.220, P=0.027), SUV max ( OR=2.255, 95% CI: 1.306-3.893, P=0.004), SUV mean ( OR=0.277, 95% CI: 0.115-0.665, P=0.004) were predictors of LNM. The AUC of PET/CT model was 0.849 (95% CI: 0.804-0.893), and the sensitivity, specificity, accuracy, and positive and negative predictive values were 87.8%(79/90), 72.2%(143/198), 77.1%(222/288), 59.0%(79/134) and 92.9%(143/154), respectively. Conclusion:The model based on 18F-FDG PET/CT metabolic parameters can improve the accuracy of pre-surgical N-staging in patients with lung adenocarcinoma.
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Objective To investigate the value of transient elastography (TE) in the staging of hepatic fibrosis in patients with autoimmune liver disease (ALD). Methods PubMed, Embase, the Cochrane Library, CNKI, Wanfang Data, and VIP databases were searched for English and Chinese articles on TE in the staging of hepatic fibrosis in ALD published from January 2000 to January 2021. Two reviewers independently performed data extraction for the articles included, and QUADAS2 was used for quality assessment. The bivariate mixed effects model in Stata 15.0 software was used to perform the Meta-analysis. Results A total of 11 articles were included, with 1041 patients in total. In the diagnosis of significant hepatic fibrosis (F≥2), TE had a pooled sensitivity of 0.81 (95% CI : 0.75-0.86), a specificity of 0.87(95% CI 0.79-0.92), and an area under the receiver operating characteristic curve (AUC) of 0.91(95% CI 0.88-0.93); in the diagnosis of advanced hepatic fibrosis (F≥3), TE had a pooled sensitivity of 0.81(95% CI 0.74-0.87), a sensitivity of 0.90(95% CI 0.85-0.93), and an AUC of 0.92(95% CI 0.90-0.94); in the diagnosis of early-stage liver cirrhosis (F4), TE had a pooled sensitivity of 0.87(95% CI 0.74-0.93), a specificity of 0.93(95% CI 0.87-0.97), and an AUC of 0.96(95% CI 0.94-0.97). Conclusion TE has a good diagnostic value in evaluating significant liver fibrosis, advanced liver fibrosis, and early-stage liver cirrhosis in patients with ALD, especially with a relatively high diagnostic accuracy for early-stage liver cirrhosis.
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Objective To compare the efficacy and safety of icotinib therapy alone versus icotinib combined with thoracic radiotherapy for the treatment of advanced non-small cell lung cancer (NSCLC) patients with an activating epidermal growth factor receptor (EGFR) gene mutation.Methods A total of 83 patients with advanced NSCLC harboring an activating EGFR gene mutation was enrolled in this study.All the patients were randomly divided into 2 groups.Patients in group A (n =41) received thoracic radiotherapy (prescribed at 60-66 Gy) combined with icotinib (three times per day,125 mg once).Patients in group B (n =42) were given icotinib therapy alone (three times per day,125 mg once).Treatment was continued until disease progression or unacceptable toxicity or death.The primary end points were median progression-free survival (mPFS) and 12 month-PFS rate.The secondary end points included objective response rate (ORR),disease control rate (DCR) and adverse events.Results With a median follow-up of 18.2 months,mPFS was 15.2 months (95％ CI:12.2-17.4) in group A and 13.2 months (95％ CI:10.8-14.9) in group B (x2 =4.29,P=0.036).PFS rates of 12 months for group A and group B were 70.3％ and 61.2％,respectively.The ORR were 78.0％ vs.57.1％ (x2 =5.16,P =0.028),and the DCR were 95.1％ vs.92.9％ (P＞0.05) in groups A and group B,respectively.No grade 3-4 adverse events was observed in both groups except the rashes (4 cases in each group).Besides,10 patients had grade 1-2 radiation-related pneumonitis and 15 patients suffered grade 1-2 radiation-related oesophagitis in group A.Conclusions In advanced NSCLC patients with an activating EGFR gene mutation,the combination of thoracic radiotherapy and icotinib had achieved an improvement on ORR and PFS with good tolerance.Clinical trial registration Chinese clinical trial registry,ChiCTRINR-16010262.
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Objective To explore the application value of transient elastic wave scanner in the diagnosis of chronic hepatitis B (CHB) patients with liver fibrosis.Methods 124 patients with CHB were randomly selected.The instantaneous elastic wave scanner (LSM) was taken in patients with liver stiffness measurement,an average of 10 consecutive measurements of the value,and the abdominal MRI examination and the indicators of serum fibrosis of the patients were checked.The coincidence rate of the diagnosis of the two kinds of examination was compared.Results The LSM value of patients with severe liver fibrosis was (24.65 ± 8.54),which was significantly higher than (5.46 ± 2.11) of patients with mild liver fibrosis and (8.96 ± 6.75) of patients with moderate hepatic fibrosis,the differences were statistically significant(t =12.871,8.254,all P ＜ 0.05).The LSM value between serum liver fibrosis and spectrum diagnosis rate was 87.8％,with abdominal MRI examination of patients,results suggested that the two cirrhosis diagnosis coincidence rate was 79.2％,the difference was statistically significant (x2 =2.866,P ＜ 0.05).Conclusion The clinical value of the instantaneous elastic wave scanner is high in the diagnosis of hepatic fibrosis in patients with CHB,with no trauma to the patients,the diagnosis coincidence rate is high,easy to be accepted,it is worthy of widely used.
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Malignant neoplasm recurrence is the most important prognostic factor for patients.Looking for tar-get gene is an important part of cancer research.Annexin Ⅰ (ANXA1 )is to be discovered in the seventies century, composition by 13 calcium -phospholipid binding proteins annexin superfamily members of the first molecules. ANXA1 expressed in a variety of malignant tumors,ANXA1 expression levels were significantly reduced or absent in most tumor tissues.The study found that changed ANXA1 expression in tumor cells may have a causal relationship with the malignant phenotype of tumor cells.This paper aims to investigate the relationship between annexin Ⅰ and malignant neoplasm metastasis.
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Objective To evaluate the clinical value of 18F-FDG PET/CT in the detection of residual,recurrent and metastatic diseases in post-treatment uterine cervical cancer patients presenting with elevated serum squamous cell carcinoma (SCC) antigen levels.Methods Between March 2009 and October 2012,18F-FDG PET/CT was performed in 48 patients(average age (47.5±11.2) years) with suspected residual,recurrent or metastatic uterine cervical cancer because of increased serum SCC antigen level (＞1.5 tμg/L).The final diagnosis was established by pathology or more than 1 year of clinical follow-up.The diagnostic efficiency of 18F-FDG PET/CT was calculated.Two-sample t test was used for data analysis.Results The serum SCC levels were 1.6-42.5(mean:8.6±9.4) μg/L.Among the 48 patients,45 (93.75％) were confirmed of having malignant lesions.18F-FDG PET/CT along with other imaging detected 174 lesions,of which 169 were proven as residual,recurrent or metastatic diseases.18F-FDG PET/CT correctly identified 159 lesions,yielding a diagnostic sensitivity and accuracy of 94.08％(159/169) and 91.38％(159/174),respectively.The diagnostic sensitivity and accuracy for residual and recurrent diseases were both 9/10;for lymph node metastasis were 94.59％ (105/111) and 92.92％ (105/113),respectively;and for other sites of metastasis were 93.75％ (45/48) and 88.24％ (45/51),respectively.There was no significant difference of SUVmax between the patients with residual/recurrent disease (mean:6.9±3.8,range:2.0-13.7) and those with metastasis (mean:6.3±2.7,range:2.0-14.4,t=0.629,P＞0.05).Conclusion 18F-FDG PET/CT is valuable for the detection of residual,recurrent and metastatic diseases in the uterine cervical cancer patients pr esenting with elevated serum squamous cell carcinoma antigen after conventional treatment.
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Objective Using microcentrifugation method (method 1) as the reference method ,to evaluate the consistency of the hematocrit (HCT ) results detected by different types of blood cell analyzers[Sysmex800i (method 2) ,Sysmex1000i (method 3) , XE-2100D (method 4)] .Methods 63 cases of fresh whole blood samples were collected and detected by three blood cell analyzers and method 1 .And the three blood cell analyzers had been calibrated before the tests .Results The correlation analysis of HCT re-sults of method 2 ,method 3 ,and method 4 with method 1 showed the coefficients were 0 .874 4 ,0 .951 2 and 0 .955 5 ,respectively . Using method 1 as the reference method ,the clinical acceptability of three blood cell analyzers were evaluated .The HCT result de-tected by method 4 was unacceptable at two clinical decision levels .Conclusion Investigating the comparability among different blood cell analyzers regularly can effectively guarantee the reliability of test results .
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Objective To observe and analyze the clinical efficacy of docetaxel and S-1 in treatment of anthracycline-resistant triple-negtive breast cancer(TNBC).Methods 64 cases with TNBC admitted in People' Hospital of Shaoxing City from June 2009 to June 2011were selected as research object.The clinical data of these cases were analyzed retrospectively.Anthracycline had been used to treat the cases, but with no effect or recurrence.Then docetaxel combined with S-1 was applied to the cases.Clinical efficacy and adverse reactions of the chemotherapy were observed and analyzed. Results After treatment,the efficiency of 64 cases was 54.69%,and the disease control rate was 79.69%.During the treatment,the main adverse reactions were gastrointestinal reactions and bone marrow suppression,without death,and patients could tolerate the adverse event.Follow-up results showed that the median time of progression was 10.5 months.After two years,progression-free survival rate was 0.Conclusion Docetaxel combined with S-1 has good clinical efficacy for anthracycline-resistant triple-negtive breast cancer,with relatively mild side effects,which may be an ideal adjuvant chemotherapy method.
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Objective To determine the best extraction process of ginkgo leaves with the total transfer rate of total flavonol glycosides and terpene lactones as the index.Methods The effects of ethanol concentration, solid-liquid ratio and extraction time on extraction process were investigated by orthogonal design method, and the contents of total flavonol glycosides and terpene lactones were detected by HPLC to calculate transfer rate.Results The optimum extraction conditions were as follows:85% ethanol refluxing and extracting for three times;the first time extracting with five-fold amount of solvent (V/W) for 3 hours;the last two times with three-fold solvent (V/W) for 2 hours.Conclusion This extraction process has the advantages of simplicity of operator, reason, energy conservation, high efficiency, and is suitable for industrial production.
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Objective To evaluate the in vitro effect on tumor cell uptake,tumor imaging and in vivo biodistribution of 99Tcm-epidermal growth factor receptor (EGFR) mRNA antisense PNA probe mediated by cationic liposome.Methods The oligonucleotide with sequence complementary to part of the EGFR mRNA antisense PNA was hybridized in an anti-parallel orientation targeted PNA.PNA hybridization complexes were labeled with 99Tcm by ligand exchange.The assembly of lipofectamine and 99Tcm-labeled heteroduplex was achieved by electrostatic interactions,and the radiolabeled purity was determined by reversedphase HPLC (RP-HPLC).The disparities of cell uptake in SKOV3 cells and the differences of biodistribution and molecular imaging in BALB/c nude mice bearing SKOV3 xenografts between lipofectanine-mediated 99Tcm-EGFR mRNA antisense PNA (group 1) and 99Tcm-EGFR mRNA antisense PNA (group 2) were analyzed.Two-sample t (or t') test and Wilcoxon rank sum test were used for statistical analysis.Results The labeling rates of both group 1 and group 2 were more than 95％ within 6 h.The cell uptake at 1,2,4,6,12,24 h after injection was (28.90±1.12)％,(32.76±1.20)％,(38.20±3.11)％,(41.23±1.60)％,(46.63±1.55)％ and (46.78±2.14)％ in group 1,and was (3.51±0.39)％,(3.90±0.40)％,(4.69±0.18)％,(5.91±0.26)％,(5.30±0.22)％ and (5.39±0.17)％ in group 2 respectively (t'=47.11-58.67,Z=2.80,all P＜0.05).The retention ratios showed significant difference between the two groups (t'=7.25-11.55,Z=2.80,all P＜0.05).The SKOV3 tumor could be visualized in both groups at 1 h post injection but much better visualized in group 1.The T/NT ratios were higher in group 1 at all time points (t =3.96,t'=12.65-14.69,Z=2.83-5.29,all P＜0.05).The T/NT ratios at uptake peak were 5.02 and 3.95,respectively.The probe accumulated mainly in tumor,kidneys and liver.Tumor uptake increased with time ((1.49±0.09) ％ID/g and (2.15±0.21) ％ID/g at 1 h,(3.90±0.65) ％ID/g and (5.00±0.10) ％ID/g at 6 h) after lipofectamine treatment.The ratios of tumor to contralateral muscle were also higher in group 1 (t =11.24,t' =3.96-11.94,all P＜0.05).Conclusions Lipofectamine-mediation can significantly improve the intracellular delivery of radionuclide molecular probe.Lipofectamine-mediated 99Tcm-EGFR mRNA antisense PNA can greatly improve imaging contrast and visualization of EGFR-over-expressing tumors.
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Objective To explore differences of drug resistance of temozolomide(TMZ) on different CD133 immune prototype of glioma cells and study on the changes of their sensitivity to TMZ through increased PUMA. Methods CD133+-U87MG cells sorted by CD133 magnetic beads were cultured in serum-free stem cell medium respectively. The cells were infected with recombinant adenovirus, Ad-PUMA, diluted in cell culture medium with or without TMZ intervention.The inhibitory rate of cell proliferation was detected by MTT assay and 50 ％ inhibition concentration of TMZ was calculated. Apoptosis rates of CD133+-U87MG cells were assessed by flow cytometry (FCM) before and after intervention of exogenous PUMA and TMZ.Results The TMZ IC50 values of CD133+glioma cells were higher than that of CD133- glioma cells. There were significant differences in apoptosis rate between CD133+ glioma cell and CD133- glioma cell (all P＜0.05).Conclusion AdPUMA joint TMZ can promote glioma stem cells apoptosis, thus improve the sensitivity to chemotherapy of glioma.
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This study examined in vitro effect of lipoxin A(4) (LXA(4)) on interleukin-1β (IL-1β) production of monocytes and its possible mechanism in severe preeclampsia (PE). Peripheral venous blood was drawn from 15 patients with severe preeclampsia (PE group) and 20 normal pregnant women (control group) to prepare monocytes which were then treated with LXA(4) at different concentrations of 0, 10, 100 nmol/L respectively. IL-1β level in the supernatant of monocytes was detected by enzyme linked immunoassay. The [Ca(2+)](i) of monocytes was measured by laser scanning confocal microscopy. The results showed that the IL-1β level and the [Ca(2+)](i) of monocytes in the PE group were significantly higher than those in the control group. LXA(4) significantly decreased the generation of IL-1β in a dose-dependent manner in the PE group. After treatment with 100-nmol/L LXA(4), in the PE group, the [Ca(2+)](i) concentration of monocytes was significantly reduced. It was concluded that LXA(4) may inhibit the IL-1β production of monocytes from severe preeclampsia women by inhibiting extracellular calcium influx.
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Adult , Female , Humans , Pregnancy , Anti-Inflammatory Agents, Non-Steroidal , Pharmacology , Calcium , Metabolism , Cells, Cultured , Interleukin-1beta , Lipoxins , Pharmacology , Monocytes , Cell Biology , Metabolism , Pre-Eclampsia , BloodABSTRACT
This study examined in vitro effect of lipoxin A(4) (LXA(4)) on interleukin-1β (IL-1β) production of monocytes and its possible mechanism in severe preeclampsia (PE). Peripheral venous blood was drawn from 15 patients with severe preeclampsia (PE group) and 20 normal pregnant women (control group) to prepare monocytes which were then treated with LXA(4) at different concentrations of 0, 10, 100 nmol/L respectively. IL-1β level in the supernatant of monocytes was detected by enzyme linked immunoassay. The [Ca(2+)](i) of monocytes was measured by laser scanning confocal microscopy. The results showed that the IL-1β level and the [Ca(2+)](i) of monocytes in the PE group were significantly higher than those in the control group. LXA(4) significantly decreased the generation of IL-1β in a dose-dependent manner in the PE group. After treatment with 100-nmol/L LXA(4), in the PE group, the [Ca(2+)](i) concentration of monocytes was significantly reduced. It was concluded that LXA(4) may inhibit the IL-1β production of monocytes from severe preeclampsia women by inhibiting extracellular calcium influx.
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Objective To observe the changes of cell cycle on cancer cells after dihydroartemisinin and X-ray irradiation. Methods Human HeLa cells of cervical cancer with p53 mutation was used and human SiHa cells of cervical cancer with wild p53 was used as control. Flow cytometry was used to detect the effect of dihydroartemisinin (20 and 100 μmol/L) and irradiation (6 Gy)on cell cycle. Western blot was used to measure the levels of cell cycle protein. Results G2 arrest was observed in irradiated HeLa cells, which the proportion of cells in G2 phase was increased from 14.45% to 73. 58% after 6 Gy X-ray irradiation, but it was abrogated by dihydroartemisinin from 73. 58% to 48.31%in HeLa cells, and it had no change on the SiHa cells. The elevated Weel protein and the lowered Cyclin B1 protein were observed with the G2 arrest severity. The expression of radiation-induced Weel protein was suppressed and the Cyclin B1 protein was increased after dihydroartemisinin treatment, which was in accordance with the abrogation of radiation-induced G2 delay. Conclusions The main effect of irradiation on cell cycle of p53 mutated HeLa cells is G2 arrest. Dihydroartemisinin could abrogate it, which is associated with the changes of Weel protein and Cyclin B1 protein. In Siha cells, the main effect of irradiation on cell cycle is G1 arrest, and dihydroartemisinin has no effect on it.
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Objective To investigate the effect of lipoxin A4(LXA4) on interleukin-1β(IL-1β)production of monocytes in maternal peripheral blood from severe preeelampsia women and its relationship with cytosolic free calcium([Ca2+]i)concentration. Methods Peripheral venous blood was drawn from 15 women with severe preeelampsia(SPE group)and 20 normal pregnant women (control group)who were admitted to the First Affiliated Hospital of Wenzhou Medical College from October 2008 to May 2009.Monoeytes were obtained from peripheral blood with Ficolt density gradient centrifugation and then were suspended in RPMI-1640 culture supplemented with LXA4 at the final concentrations of 0,10 and 100 nmol/L,respectively.IL-1β levels in monocytes supernatant were detected by enzyme-linked immunosorbent assay.The cytoplasma[Ca2+]i of cultured monocytes and its variations affected by LXA4 were measured by laser scanning confocal microscope. Results (1) After incubation with different concentrations of LXA4(0,10,100 nmol/L)for 24 h,the levels of IL-1β in SPE group were(63.16±8.20)pg/L,(53.71±8.08)pg/L and(43.16±6.89)pg/L,respectively, indicating a significant inhibition effect on IL-1β level in a dose-dependent manner (P<0. 05). The IL-1β levels in the control group were (19.22±7.43) pg/L, (16.99±6.32) pg/L and (15. 18±5.24) pg/L, correspondingly (P>0.05). (2) Without LXA4, the [Ca2+ ]i concentrations of monocytes in the SPE group were higher than that of the control (1028.09 ± 160. 52 vs 323.61 ±87.86, P<0. 05). After treatment with 100 nmol/L LXA4, the [Ca2+ ]i concentration of monocytes significantly decreased in the SPE group (409.67± 116.73, P<0. 05). Conclusions In vitro LXA4 may inhibit the IL-1β production in monoeytes of SPE patients through decrease of the cytoplama [Ca2+ ]i concentration.
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0.05), respectively, the antidiarrheal rates of which on the first 3 days were 94% and 71%(P
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Objective To evaluate the efficacy and toxicity of the protocol of FOLFOX4 for advanced colorectal cancer. Methods 27 patients received FOLFOX4oxaliplatin 85 mg/m2 as a 2-hour infusion on day 1 and a 2-hour infusion of LV (200 mg?m-2?d-1) followed by a 5-Fu bolus (400 mg?m-2?d-1) and 22-hour infusion (600 mg?m-2?d-1) for 2 consecutive days every 2 weeks. Four courses were carried out with an interval of one month. Results The total effective rate was 44.44 %, CR(3.70 %), PR(40.74 %). Median survival of all patients was 10.0 months. Mean Survival was 11.5 months. One year survival rate was 30.02 %. Median duration of 12 effective patients were 5.3 months. Median survival of effective patients and non-effective was 11.8 and 8.5 months respectively(P