Objective To evaluate a new platelet function analyzer PL-11 with three major platelet function methods.Methods A randomized controlled trial was adopted.Totally 20 healthy young students from People's Liberation Army Medical School were enrolled in the study during July and August in 2013.Subjects were treated with aspirin or clopidogrel and the platelet function was measured by using of PL-11,as well as light transmittance aggregometry (LTA),VerifyNow and thromboelastography (TEG).Results When monitor aspirin response,correlations between arachidonic acid (AA) induced PL-11 and other methods were:LTA,0.614; VerifyNow,0.829; TEG,0.697,respectively.Biases between AA induced PL-1 1 and LTA were 1.94％ at baseline and 24.02％ during aspirin treatment.Cut-off value of aspirin response tested with AA induced PL-11 was 33.3％.When monitor clopidogrel response,correlations between adenosine piphosphate (ADP) induced PL-11 and other methods were:LTA,0.767; VerifyNow,0.851; TEG,0.608.Biases between ADP induced PL-11 and LTA were 3.01％ at baseline and 6.56％ during clopidogrel therapy.Cut-off value of clopidogrel response tested with ADP induced PL-1 1 was 66％.Conclusion Results of different platelet function testing methods were not equally effective.PL-11 has a high capability when monitoring short aspirin or clopidogrel response.

The complete chloroplast genome of medicinal plant Asarum caudigerum Hance and its close relative A. cardiophyllum Franchet were sequenced using Illumina Hiseq technology, and assembled, annotated, and characterized by bioinformatic methods in this study. Then phylogenetic analysis of the complete chloroplast genomes of A. caudigerum, A. cardiophyllum, and twelve published species was conducted. The results indicated that the chloroplast genomes ranged from 186 215-186 985 bp in length, with a large single copy (LSC, 89 445-90 169 bp) and two inverted repeats (IRa/IRb, 48 387-48 408 bp). The overall GC content was 37.4%-37.5%. A total of 144 chloroplast genes were annotated, including 98 protein coding genes, 38 tRNA genes and 8 rRNA genes. In addition, complex genomic rearrangements were detected in the chloroplast genome of Asarum. Meanwhile, visual evaluation of the discrete type of the sequence indicated that the variation level of non-coding region was higher than that of coding region. Phylogenetic analyses suggested that A. caudigerum and A. cardiophyllum were clustered into a single clade and A. cardiophyllum, A. sieboldii var. seoulense, A. misandrum and A. maculatum were clustered into another single branch. These two clade were sister species. This study provides a scientific basis for the identification, phylogenetic relationship, molecular breeding of Asarum species.

OBJECTIVETo evaluate the clinical characteristics and risk factors of clonal evolution after immunosuppressive therapy (IST) in children with severe/very severe aplastic anemia (SAA/VSAA).

METHODSThe clinical data of 231 children with newly-diagnosed SAA/VSAA who received IST were retrospectively studied. The incidence and risk factors of clonal evolution after IST were analyzed.

RESULTSThe 5-year overall survival rate of the 231 patients was 82.7%. Except for 18 cases of early deaths, 213 patients were evaluated for IST efficacy. Among the 231 patients, cytogenetic abnormalities for at least two chromosome metaphase were detectable in 14 (7.4%) patients, and PNH clones were detectable in either peripheral red blood cells or neutrophils for 95 patients. Among the 213 patients evaluated for IST efficacy, 15 patients experienced clonal evolution after IST. Five patients had PNH and trisomy 8 which were defined as favorable progressions, and ten patients experienced monosomy 7 and MDS/AML as unfavorable progressions. The 5-year accumulative incidence of favorable and unfavorable progression were (2.2±2.2)% and (4.8±3.3)%, respectively. Until the last follow-up, 100% (5/5) of patients with favorable progressions and 50% (5/10) of patients with unfavorable progressions survived. WBC>3.5×10/L, CD3T cell percentage>80%, dosage of antithymocyte globulin >3.0 mg/(kg·d) and no response to IST were related to unfavorable progressions by univariate analysis. Cox multivariate analysis revealed that an increased CD3T cell percentage (>80%) and no response to IST were independent risk factors for unfavorable progressions.

CONCLUSIONSThe children with SAA/VSAA who have an increased CD3T cell percentage at diagnosis or have no response to IST are in high risks of unfavorable progressions.

Adolescent ; Anemia, Aplastic ; drug therapy ; genetics ; immunology ; mortality ; Child ; Child, Preschool ; Chromosome Aberrations ; Clonal Evolution ; Female ; Humans ; Immunosuppressive Agents ; therapeutic use ; Infant ; Male ; Proportional Hazards Models ; Retrospective Studies

Objective:To explore the prediction model of tissue chip technology for the chemotherapy response of patients with colorectal cancer.Methods:217 patients with colorectal cancer who had received standardized chemotherapy in the Affiliated People’s Hospital of Ningbo University from Jan. 2017 to Dec. 2019 were prospectively selected. The patients were randomly divided into training set (152 cases) and test set (65 cases) according to the ratio of 7:3, and were followed up for 6 months. The clinical data of the patients in the training set were compared, the expression levels of Ang-2, caspase-3 and CD147 in the patients were analyzed by tissue microarray technology, and the related factors affecting the responsiveness of colorectal cancer chemotherapy were analyzed by the Logistic regression model. R software was used based on the training set. A nomogram prediction model was built and model performance on the test set was evaluated.Results:One case was excluded from the training center, and 151 cases were finally included, including 93 cases in the chemotherapy response group and 58 cases in the chemotherapy response group. The tumor diameter, serum carcinoembryonic antigen, caspase3, Ang2 expression level, and the proportion of clinical stage IV in the poor chemotherapy group were significantly higher than those in the good chemotherapy group (all P<0.05) ; Logistic regression showed tumor diameter ( OR=2.394), serum carcinoembryonic antigen ( OR=1.878), caspase-3 ( OR=4.261), Ang-2 expression level ( OR=5.457), and clinical stage IV ( OR=5.954) were independent risk factors for adverse drug reactions in patients with colorectal cancer (all P<0.05). The consistency index (C-index) for predicting the factors related to adverse chemotherapy reactions in patients with colorectal cancer was 0.915. External verification showed that the sensitivity was 86.96%, the specificity was 92.50%, and the accuracy was 90.48% (42/65) . Conclusion:The expression levels of Ang-2 and caspase-3 are correlated with the responsiveness of colorectal cancer to chemotherapy, and can be used as predictive indicators to evaluate the responsiveness of colorectal cancer to chemotherapy.

Objective To study the clinical significance of the method of three perpendicular planes plus special planes in diagnosing fetal cleft lip /palate by prenatal ultrasound .Methods The approach of three perpendicular planes and special planes were used in diagnosing 110 cases of cleft lip/palate.The sonogram features in each section were analyzed and the outcomes were recorded during follow-up.Results On prenatal ultrsound ,110 cases were examined with three perpendicular planes method .The coronary section could be displayed at 100%cases (110 cases), sagittal section 76.4%cases (84 cases),transverse section 96.4%cases (106 cases) and parasagittal section 25.5%cases (28 cases).With special planes method,74 cases were examined .The section through pyriform aperture could be displayed in 47 cases,in 45 cases on the section through the lower lip/lower jaw/submandibular triangle ,and in 16 cases on the section through the cheek.Combining the three perpendicular planes and special planes methods ,94.5%(104/110) cases could be diagnosed definitely.Six cases (5.5%,6/110) were missed because of fetal position or oligoamnios . Conclusions The method of three perpendicular planes plus special planes is effective in prenatal ultrasound diagnosing cleft lip/palate,which is of great help in improving prenatal diagnostic accuracy of fetal cleft lip/palate.

Reasonable sampling scheme is the important basis for establishing reliable population pharmacokinetic model. It is an effective method for estimation of population pharmacokinetic parameters with sparse data to perform population pharmacokinetic analysis using the nonlinear mixed-effects models. We designed the sampling scheme for amlodipine based on D-optimal sampling strategy and Bayesian estimation method. First, optimized sample scenarios were designed using WinPOPT software according to the aim, dosage regimen and visit schedule of the clinical study protocol, and the amlodipine population model reported by Rohatagi et al. Second, we created a NONMEM-formatted dataset (n = 400) for each sample scenario via Monte Carlo simulation. Third, the estimation of amlodipine pharmacokinetic parameters (clearance (CL/F), volume (V/F) and Ka) was based on the simulation results. All modeling and simulation exercises were conducted with NONMEM version 7.2. Finally, the accuracy and precision of the estimated parameters were evaluated using the mean prediction error (MPE) and the mean absolute error (MAPE), respectively. Among the 6 schemes, schemes 6 and 3 have good accuracy and precision. MPE is 0.1% for scheme 6 and -0.6% for scheme 3, respectively. MAPE is 0.7% for both schemes. There is no significant difference in MPE and MAPE of volume among them. Therefore, we select scheme 3 as the final sample scenario because it has good accuracy and precision and less sample points. This research aims to provide scientific and effective sampling scheme for population pharmacokinetic (PK) study of amlodipine in patients with renal impairment and hypertension, provide a scientific method for an optimum design in clinical population PK/PD (pharmacodynamics) research.
Adult ; Age Factors ; Alanine Transaminase ; blood ; Amlodipine ; pharmacokinetics ; pharmacology ; Antihypertensive Agents ; pharmacokinetics ; pharmacology ; Bayes Theorem ; Body Weight ; Calcium Channel Blockers ; pharmacokinetics ; pharmacology ; Humans ; Hypertension ; metabolism ; Metabolic Clearance Rate ; Middle Aged ; Models, Biological ; Monte Carlo Method ; Nonlinear Dynamics ; Renal Insufficiency ; metabolism ; Software

The study was designed to explore the effects and the underlying mechanism of ginsenoside Rg1 on corticosterone (CORT)-induced astrocytes injury. The primary hippocampal and prefrontal cortical astrocytes from rats were cultured and purified. CORT was used to stimulate stress condition. Western blot was used to detect the effects of ginsenoside Rg1 on the phosphorylation of Cx43. Cell Counting Kit (CCK8) was used to detect the effects of ginsenoside Rg1 on astrocytes viability. The roles of ginsenoside Rg1 was reversed by protein kinase inhibitors in the change of astrocytes morphology. Our results showed that ginsenoside Rg1 reversed the phosphorylation of Cx43 induced by CORT; ginsenoside Rg1 significantly upregulated the cell viability of astrocytes against CORT; the role of ginsenoside Rg1 was obviously inhibited by Src protein kinase inhibitors PP2 and Akt protein kinase inhibitors BAY1125976 in prefrontal cortical astrocytes; in hippocampal astrocytes, Src protein kinase inhibitor PP2, p38 protein kinase inhibitor SB203580, Akt protein kinase inhibitor BAY1125976 significantly inhibited the cell protective effects of ginsenoside Rg1. In conclusion, ginsenoside Rg1 improved the activity of Cx43 gap junctions in astrocytes exposed to CORT; ginsenoside Rg1 protected astrocytes against that CORT activated the Src, p38 and Akt signaling pathways, and the mechanism was different in prefrontal cortical and hippocampal astrocytes.

Objective:The SD rat model of hyperplasia of mammary gland（HMG） and the ultrahigh-performance liquid chromatography and mass spectrometry (UHPLC-LTQ-Orbitrap MS) technology were used to explore the pharmacological material basis of Shuangjin Sanjie granules (SJSJG) for the treatment on HMG.Method:SD rat models of HMG were administered in groups, and the nipple height and the diameter were measured; the levels of estradiol (E₂), progesterone (P) and prolactin (PRL) in serum were detected, pathological examination was conducted for the hyperplasia of breast tissue. Histochemical methods were used to detect the expressions of estrogen receptor α (ERα), androgen receptor (AR), progesterone receptor (PR), tumor necrosis factor-α (TNF-α) proteins. Finally, UHPLC-LTQ-Orbitrap MS technology was used to detect the main chemical constituents of SJSJG, and the pharmacodynamic substance basis was analyzed based on the pharmacological effect.Result:The results of animal experiments showed that compared with the normal group, nipple height and diameter of the model group increased remarkably (P<0.01), serum E₂ significantly increased (P<0.01). Pathological examination showed abnormal hyperplasia of breast tissue， expressions of ERα, AR, PR and TNF-α increased， compared with the model group, the nipple height and diameter of the SJSJG group decreased remarkably (P<0.01), serum E₂ was decreased significantly (P<0.01)， pathological examination showed weakened abnormal hyperplasia of breast tissue, ERα, AR, PR and TNF-α protein expressions were significant decreased (P<0.01). The results of basic material study showed that 85 chemical components were identified from SJSJG, including 16 alkaloids, 7 flavonoids, 15 terpenes, 9 phenolic acid compounds, 3 coumarin compounds, 10 esters and lactone compounds, 7 fatty acids compounds, 4 amino acids compounds, and 14 other types of ingredients， among them, alkaloids and terpenoids chemical drug substances were closely related.Conclusion:SJSJG can effectively improve the condition of breast hyperplasia, and its medicinal substance basis may include saikosaponin A, Saikosaponin D, verticinone, peimine.