Adult ; Animals ; Cell Differentiation ; Cell Lineage ; Embryo, Mammalian ; cytology ; Hematopoietic Stem Cells ; cytology ; Humans ; Pluripotent Stem Cells ; cytology ; Regeneration ; Stem Cells ; cytology ; Tissue Engineering ; methods

To investigate the effect of Tanreqing injection on immune activity of peripheral blood lymphocytes of patients with lung cancer. The peripheral blood lymphocytes of patients with lung cancer and healthy persons were separated by the density gradient centrifugation method for subsequent experiments, with those from healthy persons as the positive control. The effect of Tanreqing injection on stimulating the proliferation of lymphocytes with phytohemagglutinin (PHA) was determined by MTT method. The effect of Tanreqing injection on the lymphocyte secretions of IFN-γ and TNF-α and the subset ratio of lymphocytes cultured separately or with Tanreqing injection of different concentrations were examined by ELISA and flow cytometry (FCM) respectively. In addition, the LDH release assay was used to detect the cytotoxicity of cytotoxic T cells (CTL) and natural killer cells (NK). According to the findings, all of immunological indexes of lymphocytes from patients with lung cancer were weaker than that of healthy persons, but with the obvious increases in proliferation activity and IFN-γ and TNF-α secretions of lymphocytes co-cultured with Tanreqing Injection (P < 0.05). Among lymphocyte subsets co-cultured with Tanreqing Injection, CD3+, CD3+ CD4+ and CD3- CD16 + 56+ cell ratios notably increased, whereas CD4+ CD25+ Treg cell ratio obviously decreased (P < 0.05). In the meantime, Tanreqing injection can markedly promote the cytotoxicities of CTL and NK (P < 0.05). In conclusion, Tanreqing injection shows a significant effect in promoting the immune activity of lymphocytes from patients with lung cancer and their anti-tumor immunity.
Cell Proliferation ; drug effects ; Cells, Cultured ; Drugs, Chinese Herbal ; administration & dosage ; Humans ; Interferon-gamma ; genetics ; immunology ; Killer Cells, Natural ; drug effects ; immunology ; Lung Neoplasms ; drug therapy ; genetics ; immunology ; physiopathology ; T-Lymphocytes, Cytotoxic ; drug effects ; immunology ; Tumor Necrosis Factor-alpha ; genetics ; immunology

Objective:To explore the predictive value of a scoring model based on MRI images for diagnosing invasive placenta accreta and associated adverse clinical outcomes.Methods:This retrospective cohort study involved 260 patients delivered at Peking University Third Hospital from January 2015 to December 2018, who were suspected to be placenta accreta with two or more ultrasound image findings and underwent MRI examination. Placenta accreta was finally diagnosed and classified based on the intraoperative clinical findings or pathological examination. Adverse clinical outcomes were defined as intraoperative bleeding ≥1 500 ml and/or having hysterectomy. Quantitative and qualitative interpretation of five MRI signs were performed, including intraplacental low-intensity band on T2 weighted imaging, abnormal intraplacental vascularization, vascularization of uterovesical interface, uterine bulging and cervical involvement. Chi-square and t test were used for univariate analysis of the five MRI signs and the receiver operating characteristics (ROC) curve of each MRI sign for predicting invasive placenta accreta and adverse clinical outcomes were drawn. The predictive value was assigned as 1 when ≥ the cutoffs that matched to the maximum Yoden index values, and was assigned as 0 when below the cutoffs. A scoring model based on the five MRI signs was established, ROC curves of the model for predicting invasive placenta accreta and adverse clinical outcomes were drawn and the area under the curve (AUC), sensitivity, specificity and Youden index were calculated. Results:(1) Univariate analysis showed that all five MRI signs were significantly associated with invasive placenta accreta and adverse clinical outcomes. Except for cervical involvement, the other four signs had an AUC value of greater than 0.5 in predicting invasive placenta accreta and adverse clinical outcomes. (2) The predictive cut-off values of abnormal intraplacental vascularization image and intraplacental dark band area on T2 weighted imaging were 2.0 cm 2 and 0.6 cm 2, respectively, and were all 1.0 for the other three signs. The AUC value of MRI signs-based scoring model for predicting invasive placenta accreta was 0.863. When the score was ≥ 2 points, the diagnostic sensitivity was 0.836 and the specificity was 0.726. The scoring model predicted adverse clinical outcomes with an AUC of 0.841. When the score was ≥3 points, the predictive sensitivity was 0.707 and the specificity was 0.818. Conclusions:The scoring model based on MRI signs is of good value for the diagnosis of invasive placenta accreta and the prediction of adverse clinical outcomes.

Proteins extracted from two varieties of Chinese roses leaves were separated by two- dimensional polyacrylamide gel electrophoresis (2-DE) with immobilized pH gradient (IPG). Many difference proteins were isolated with molecular weights ranging 10-30 kDa and pI5-6. Three proteins of high levels observed in a gel were excised and identified using peptide mass fingerprinting and MS-MS. A summary of the identified proteins and their putative functions are presented. They are identified as eIF-5A、LEA protein and Hsp17. 5. Functions of these proteins in plant tolerance to high temperature were discussed.

Objective To establish a simple and sensitive method for the determination of serum copper by spectrophotometry.Methods Nitro-PAPS was used as a coloring agent for serum copper in the presence of surfactants Tween-80 and Triton X-100 and the formed complex was measured by spectrophotometry.Results The maximum absorption wavelength of the complex was 570 nm and the molar absorption coefficient was 7.95?10~4 L/(mol?cm).The lineafity of the method was up to 63.0 ?mol/L and the recoveries ranged from 98.6% to 103.1%.The within-run and between-run CVs were 2.1%-3.3% and 2.7%-3.8%.The method(Y)was compared with an AAS method(X)and a correlation of Y=1.01X -0.27(r=0.998 2)was obtained.A reference interval(x~-?2s)determined with this method on 68 individuals was 9.7-24.1 ?moL/L.Conclusions A simple and sensitive method for serum copper has been established.It may used for the analysis of serum copper in clinical laboratories.

There has been an increasing interest in recent years on mesenchymal stem cell (MSC). It is well known that MSCs are capable of self-renewal and differentiating into many cell lineages. MSC can be expended to a large quantity that is required for clinical transplantation. Recent studies show that MSC have potential application in immune diseases due to their unique immunologic characteristics, such as low immunogenicity and immunoregulatory function. But their immunoregulatory mechanism is not yet clear. This review discusses the advances in researches on the mechanism of MSCs' immunoregulatory function and potential clinical application in immune disease and organ transplantation.
Animals ; B-Lymphocytes ; immunology ; Graft vs Host Disease ; immunology ; Humans ; Immune Tolerance ; immunology ; Immunotherapy ; Mesenchymal Stem Cell Transplantation ; methods ; Mesenchymal Stromal Cells ; cytology ; immunology ; T-Lymphocytes ; immunology

AIMTo research the spontaneous firing activities during different-frequency stimulation of subthalamic nucleus and microelectrophoresis GABA, Glu and their antagons respectively, approaching the mechanism of DBS in the treatment of Parkinson's disease further.

METHODSUsing extracellular recording to investigate the effect of different-frequency stimulation of STN and microelectrophoresis several drugs on the spontaneous firing activities of the SNr neurons.

RESULTSFor STN stimulation at low frequency, there was no difference on the spontaneous firing activities of SNr neurons between pro-stimulation and meta-stimulation (P > 0.05). With the increasing of stimulation frequency, most of the SNr neurons were inhibited. While during the STN stimulation frequency at high-frequency, the firing rates of inhibited SNr neurons were changed (P < 0.05). Glu had catatonic excitement effect on the SNr neurons, whereas GABA had tonic inhibition effect. 80% of SNr neurons which were inhibited by STN-HFS were not inhibited by STN-HFS on the basis of excitatory effect of BIC.

CONCLUSIONTo treat the motor symptoms of PD, when SIN is selected as the target nucleus, the electrical stimulation with high-frequency should be chosen. It is possible that SIN-HFS modulate the activity of SNr by inhibitory effect of GABA predominantly.

Action Potentials ; physiology ; Animals ; Electric Stimulation ; Electrophoresis ; methods ; Glutamic Acid ; administration & dosage ; pharmacology ; Male ; Neurons ; physiology ; Parkinson Disease ; physiopathology ; therapy ; Rats ; Rats, Sprague-Dawley ; Substantia Nigra ; physiology ; Subthalamic Nucleus ; physiology ; gamma-Aminobutyric Acid ; administration & dosage ; pharmacology

OBJECTIVETo study the impact of the chloride channel dysfunction of the cystic fibrosis transmembrane conductance regulator (CFTR) on the cytoskeleton of Sertoli cells in the mouse.

METHODSTM4 Sertoli cells were cultured and treated with CFTR(inh)-172 at the concentrations of 1, 5, 10 and 20 μmol/L for 48 hours. Then the cytotoxicity of CFT(inh)-172 was assessed by CCK-8 assay, the expressions of F-actin and Ac-tub in the TM4 Sertoli cells detected by immunofluorescence assay, and those of N-cadherin, vimentin and vinculin determined by qPCR.

RESULTSCFTR(inh)-172 produced cytotoxicity to the TM4 Sertoli cells at the concentration of 20 μmol/L. The expressions of F-actin and Ac-tub were decreased gradually in the TM4 Sertoli cells with the prolonging of treatment time and increasing concentration of CFTR(inh)-172 (P < 0.05). The results of qPCR showed that different concentrations of CFTR(inh)-172 worked no significant influence on the mRNA expressions of N-cadherin, vimentin and vinculin in the Sertoli cells.

CONCLUSIONThe CFTR chloride channel plays an important role in maintaining the normal cytoskeleton of Sertoli cells. The reduced function and expression of the CFTR chloride channel may affect the function of Sertoli cells and consequently spermatogenesis of the testis.

Actins ; metabolism ; Animals ; Benzoates ; pharmacology ; Chloride Channels ; physiology ; Cystic Fibrosis Transmembrane Conductance Regulator ; antagonists & inhibitors ; Cytoskeleton ; drug effects ; Male ; Mice ; Sertoli Cells ; drug effects ; metabolism ; Spermatogenesis ; Thiazolidines ; pharmacology ; Time Factors

OBJECTIVETo study the correlation between the severity of psychic symptoms and that of clinical ones in CP patients.

METHODSWe investigated 300 CP patients with NIH Chronic Prostatitis Symptom Index (CPSI), Symptom Checklist 90 (SCL-90) and a self-designed questionnaire, and analyzed the correlation between the scores. Based on the scores on pain and urinary symptoms in CPSI, the patients were divided into a mild, a moderate and a severe group.

RESULTSA total of 288 questionnaires were collected. Compared with normal males, the SCL-90 scores of the CP patients were not different in obsessive-compulsive (P > 0.05), lower in interpersonal-sensitivity (P < 0.01), higher in paranoid ideation (P < 0.05) and significantly higher in other factors and the number of positive factors (P < 0.01). There were no statistical differences among the mild, moderate and severe groups either in somatization and interpersonal-sensitivity (P > 0.05) or in phobic anxiety (P > 0.05), but there were between the mild and moderate groups in phobic anxiety (P < 0.05) and significantly among the three groups in other factors and the number of positive factors (P < 0.01 or P < 0.05). No correlation was found between CPSI and SCL-90 in the total scores.

CONCLUSIONThere was a close correlation between the severity of psychic symptoms and that of clinical symptoms in CP patients. Psychotherapy, especially psychological intervention, plays an important role in the early stage of the disease.

Adult ; Chronic Disease ; Humans ; Male ; Middle Aged ; Prostatitis ; psychology ; Psychiatric Status Rating Scales

Objective To investigate the expression levels of CD40L in CD4 + T cells from systemic sclerosis (SSc) patients.Methods PBMC ( peripheral blood mononuclear cells) cells were isolated from the peripheral venous blood of SSc patients (16females,10males) and healthy donors (15females,10males) by density gradient centrifugation.CD4 + T cells were isolated using magnetic beads.mRNA levels of CD40L in CD4 + T cells were measured by real-time quantitative polymerase chain reaction (RTPCR).Flow cytometric analysis was used to detect the CD40L protein on the surface of CD4 + T cells.Results Both CD40L mRNA and protein expression in CD4 +T cells was significantly elevated in female SSc patients compared with female healthy controls [5.61 ± 1.86 vs 2.80 ±0.94,P ＜0.01 ; (6.70 ±3.55)％vs (2.37 ± 1.39)％,P ＜ 0.05,respectively].No significant increase in CD40L mRNA and protein expression was observed in male SSc patients compared with male controls [2.59 ± 0.89 vs 1.92 ± 0.56,P ＞0.05; (2.06±1.09)％ vs (2.13±0.87)％,P ＞0.05,respectively].Conclusions CD40L was overexpressed in CD4 + T cell of female patients but not males,which maybe one of the important reasons for female susceptibility to SSc.