Objective To explore the imaging features of bone marrow edema(BME)and soft tissue edema(STE)caused by bone tumors and tumor-like lesions.Methods Ninety nine patients with bone tumors and tumor-like lesions which were proved by surgical pathology were reviewed.The patients were divided into benign and malignant groups.Evaluation parameters included the size and signal intensity of BME and STE,the features of enhancement,the bone sclerosis and its relation with BME,and joint effusion,et al.The data of two groups were analyzed by X2 test.Results There were 40 patients in benign group and 59 patients belonged to malignant group.BME and STE demonstrated low signal on T1-weighted images and high signal on fat-suppressed T2-weighted images.Some BMEs demonstrated low signal on T2weighted images,which corresponded to sclerosis on X-ray film and(or)CT.Both BME and STE demonstrated uniform enhancement.There were statistically significant differences between benign and malignant groups including the frequency of BME.sclerosis.the median of the size of the BME and STE (P<0.05),which were 57.5%(23/40),25.0%(10/40),2.7 cm,1.3 cm,and 32.2%(19/59).3.4%(2/59),1.6 cm,1.7 cm respectively.No significant differences between the frequency of STE,joint effusion in 2 groups(P>0.05).Conclusions Both benign bone tumors and tumor-like lesions and malignant bone tumors can be accompanied by BME and STE.The size of BME in the benign bone tumors and tumor-like lesions is bigger than those in malignant ones,and the size of STE in malignant bone tumors is bigger than benign ones.

[Summary] The effects of lipid components on insulin secretion in patients with type 2 diabetes(T2DM) and control subjects were explored. The results demonstrated that in control group, disposal index( DI)0 was positively correlated with high density cholesterol(HDL-C), while DI30 was negatively correlated with total cholesterol(TC), triglycerides( TG) and low density cholesterol ( LDL-C), and DI120 was also negatively correlated with TC and LDL-C. In T2DM group, DI0 was negatively correlated with TC and LDL-C, DI30 was negatively correlated with TC, TG, LDL-C and TG/ HDL-C, DI120 was negatively correlated with TC, TG, LDL-C and TG/ HDL-C.

Objective The variation of serum thyroid hormones within the euthyroid range may be associated with insulin sensitivity.The study was to investigate whether the variation of thyroid hormones within the euthyroid range could influence insulin sensitivity in elderly patients with type 2 diabetes mellitus (T2DM). Methods 200 elderly inpatients and outpatients with type 2 diabetes were collected from September 2013 to May 2014 in our hospital for T2DM group.150 normal controls with normal glucose metabolism were taken as the control group.Blood samples were collected after 75g oral glucose tolerance test(OGTT) on all the re-search objects.Questionaire survey, physical examination and related metabolic index test were also done on them .Chemilumines-cence method were applied to detect their insulin, thyroid stimulating hormone(TSH), FT3 and FT4. Results FT3 levels were significantly lower in T2DM group than in control group[(4.05 ±0.27 )pmol/L vs (4.61 ±0.5)pmol/L), P<0.05].TSH levels were significantly higher in T2DM group than in control group[(2.75 ±1.07) IU/mL vs (2.28 ±0.89) IU/mL, P<0.05], while there was no significant difference as to FT4 levels between these two groups.All subjects were divided into three groups according to the tertiles of FT3 level, Matsuda index of high FT3 level group were significantly higher in comparison to middle and low FT3 level groups, while there was no significant difference as to HOMA-IR in the three groups.FT3 levels were negatively correlated with HO-MA-IR and positively correlated with Matsuda index .After stepwise regression analysis, there was significant positive association be-tween FT3 and Matsuda index. Conclusion Thyroid hormone especially FT3 is significantly associated with insulin resistance .FT3 may participate in the development of type 2 diabetes, which pro-vides a new treatment for T2DM.

Objective:To investigate the levels of periphreal blood free carnitine and amino acids in healthy pregnant women in the third trimester and their association with maternal, fetal, and neonatal cardiac function and structure.Methods:This prospective descriptive study included healthy singleton pregnancies who underwent routine obstetric examination and delivered in two district maternal and child health hospitals (one in the urban and one in the suburb an area) in Beijing from June 2017 to February 2018. All recruiters had serology Down's syndrome screening test at (18±1) gestational weeks. Besides measurement of amino acids and free carnitine levels in whole blood and urine samples by liquid chromatography-tandem mass spectrometry, all cases underwent maternal and fetal echocardiography at (35±1) weeks of gestation. And neonatal echocardiography was performed after delivery to assess the heart function and structure. Antenatal factors were also collected, including maternal education background, age at first marriage and conception, gravidity, and folic acid supplement in early pregnancy. Statistical analysis was performed using t-test, ANOVA, Chi-square test, Pearson correlation coefficient, and Kappa test. Results:A total of 493 mother-neonate dyads were enrolled in this study. Blood free carnitine levels in the healthy pregnant women in the third trimester ranged from 5.09 to 59.17 μmol/L (reference value: 10.00-50.00 μmol/L) with an average value of (13.03±3.87) μmol/L. None was found with structural abnormalities by cardiac ultrasound, showing an average left ventricular end diastolic diameter (LVEDD) and end systolic diameter (LVESD) of (45.70±3.08) mm and (29.17±3.12) mm, respectively, and left ventricular ejection fraction (LVEF) of all cases were over 55%. No cardiac malformation was detected by the third-trimester fetal echocardiography. The average birth weight of the 493 newborns was (3 340±313) g. Those whose birth weight <2 500 g and >4 000 g were accounted for 1.0% (5 cases) and 3.0% (15 cases) with the average maternal blood free carnitine level of (13.25±2.17) μmol/L (10.46-19.21 μmol/L) and (12.64±2.50) μmol/L (8.78-17.73 μmol/L) ( t=0.42, P>0.05). The average LVEDD and LVESD of the 493 newborns were (17.21±1.27) mm and (11.03±1.30) mm, respectively. For the 64 newborns (13.0%) whose LVEF<60%, the maternal blood free carnitine level was (12.93±2.78) μmol/L (7.34-22.13 μmol/L), showing no statistical difference ( t=-0.29, P>0.05) with those 59 neonates (12.0%) whose LVEF over 75% and maternal carnitine level of (13.09±3.24) μmol/L (8.66-27.49 μmol/L). All cases were divided into four groups based on the quartiles of maternal blood free carnitine level and no significant difference in maternal or neonatal LVEDD or LVEF was observed among these groups (all P>0.05). Conclusions:Blood free carnitine concentration in healthy pregnant women in the third trimester is at the lower limit of normal range, and no significant effect on maternal cardiac function and fetal cardiac structure is seen. However, the effect of low maternal carnitine level in the third trimester on children's myocardial function and whether carnitine should be supplemented in the third trimester are worthy of further investigation with larger sample size.

Objective To determine the influence of abiraterone acetate (AA) on neuroendocrine differentiation (NED) in metastatic castration-resistant prostate cancer (mCRPC) and the prognostic predicting value of the serum NED markers in mCRPC patients treated with AA.Methods We conducted an analysis in 115 chemotherapy-naive mCRPC patients who were treated with chemotherapy in Renji hospital from 2013 to 2017.The median age was 70,ranged from 65 to 76 years old.The median CgA,NSE and PSA levels were 101.1 ng/ml (78.5-150.0 ng/ml),13.4 ng/ml (10.5-17.6 ng/ml) and 38.8 ng/ml (11.2-123.2 ng/ml),respectively.Among them,48 cases were classified as the group without AA treatment.The other 67 cases were classified as group after AA failure.In group without AA treatment,the median CgA,NSE and PSA levels were 109.1 ng/ml(80-151.5 ng/ml);13.8 ng/ml(10.8-18.2 ng/ml) and 39.2 ng/ml (8.6-200 ng/ml),respectively.In group after AA failure,the median CgA,NSE and PSA levels were 105.4 ng/ml(78.8-175.5 ng/ml),13.8 ng/ml(10.8-17.6 ng/ml) and 39.0 ng/ml(8.4-219.8 ng/ml),respectively.In the group with serial evaluation of NED markers during AA treatment,the median serum CgA,NSE levels at baseline were 115.9 ng/ml(90.1-201.5 ng/ml),13.3 ng/ml (10.4-18.1 ng/ml),respectively.The endpoints were PSA PFS(progression-free survival) and radiographic PFS (rPFS).Results In 34 patients with serial evaluation,serum NED markers level in 19 patients increased after the failure of AA treatment.Median serum CgA and NSE levels were 115.9 ng/ml(90.1-201.5 ng/ml)and 13.25 ng/ml (10.37-18.14 ng/ml) at baseline.Median serum CgA and NSE levels were 129.6ng/ml (75.5-230.5 ng/ml) and 14.7 ng/ml (11.8-19.1 ng/ml) after 6 months treatment,respectively.The median serum CgA and NSE levels were 130.4 ng/ml (95.7-205.7 ng/ml) and 15.2 ng/ml(12.4-18.7 ng/ml) at the time of failure of AA treatment,respectively.There was no significant difference of NED markers between baseline and failure of AA treatment (P =0.243).In logistic univariate analysis,AA treatment and its duration were not independent factors influencing NED(P =0.30;P =0.52).Compared with the NED markers elevation group in the first 6 months of AA treatment and baseline supranormal NED markers group,the NED markers decline group(PSA PFS(17.1 vs.10.4 months,P ＜ 0.001) and rPFS (17.0 vs.10.4 months,P =0.003)) and baseline normal NED markers group(PSA PFS(14.1 vs.9.5 months,P =0.001) and rPFS(16.4 vs.10.5 months,P ＜ 0.001)) has a longer median PSA PFS and rPFS respectively.In multivariate Cox analysis,baseline NED markers level and NED markers variation during the first 6 months of AA treatment remained significant predictors of rPFS(P ＜ 0.05),and PSA-PFS (P ＜ 0.05).Conclusions We found there was heterogeneity in changes of NED markers in different mCRPC patients during AA treatment,and AA might not significantly lead to progression of NED of mCRPC in general.Serial CgA and NSE evaluation might help clinicians guide clinical treatment of mCRPC patients.Serum NED markers elevation during the first 6 months of AA treatment and elevated baseline NED markers levels indicated poor prognosis in mCRPC treated with AA.

OBJECTIVE: To investigate the effects of down-regulating of c-Met expression to the proliferation, invasiveness and apoptosis of human multiple myeloma RPMI 8226 cells. METHODS: According to transfection the RPMI8226 cells were dividide into RPMI 8226 (untreated RPMI 8226), RPMI 8226 /shRNA-Met and RPMI8226/shRNA-control group, respectively. Protein expression level of c-Met was detected by Western blot so as to evaluate transfection condition; the proliferation of the cells was detected by MTT; apoptosis and cycle of the cells were detected by flow cytometry; effect of c-Met/shRNA on RPMI 8226 cell adhesion was detected by RPMI 8226 cell adherence to ECM (Fn and Matrigel) and ECV304 cells. Invasiveness of RPMI 8226 cell was detected by Transwell assay. RESULTS: The c-Met short hairpin RNA (shRNA) was successfully transfected into RPMI 8226 cells, and could inhibit the expression of c-Met significantly. The down-regulation of c-Met could inhibit the proliferation of RPMI 8226 cells significantly. The percentage of cells in the G/G phase and apoptotic rate (sub-G) in the RPMI 8226/shRNA-Met group were higher than those in the control group, the adhesion rate and the number of migrated RPMI 8226/shRNA-Met cells were decreased significantly as compared with control group. There were no significant differences in each indexes between RPMI 8226/shRNA-control and control group. CONCLUSION Knockdown of c-Met can affect the proliferation, adherence, invasiveness and apoptosis of human multiple myeloma RPMI 8226 cells.
Apoptosis ; Cell Line, Tumor ; Cell Proliferation ; Humans ; Multiple Myeloma ; RNA, Small Interfering

Cell biology experiments in space are indispensable for investigating the effects of microgravity environment on living organisms. As an important technological means of supporting life science researche, space cell bioreactor may directly influence the data quality of space cell biology experiments and research level. To date, space cell bioreactor techniques are still under development, and lack of standard rationale. In this article, the technical progresses of space cell bioreactor were reviewed, by introducing the operational principle of several typical space cell bioreactors, analyzing the mode of culture medium supplying and character of fluid mechanics environment in space, as well as the relevant supporting techniques about the parametric controlling on temperature, dissolved oxygen and pH value and on-line microscopic imaging, so as to discuss the future perspective about space cell bioreactor techniques.

The present study carried out a phytochemical investigation of the methanol extract of the branches and leaves of Clausena lansium and afforded nine carbazole alkaloids (compounds 1-9) including two new carbazole alkaloids, claulansiums A and B (compounds 1 and 2). The new compounds were elucidated on the basis of extensive spectroscopic data (MS, NMR, IR, and UV) and the known compounds were identified by comparing spectroscopic data with those reported in literature. All the isolated compounds were tested for their cytotoxic activity against A549 and Hela cancer cell lines. Our results showed that compounds 2-6 exhibited varying degrees of cytotoxicity to cancer cells, with IC values ranging from 8.67 to 98.89 μmol·L.
A549 Cells ; Alkaloids ; chemistry ; isolation & purification ; toxicity ; Antineoplastic Agents ; chemistry ; isolation & purification ; toxicity ; Carbazoles ; chemistry ; isolation & purification ; toxicity ; Cell Line, Tumor ; Cell Survival ; drug effects ; Clausena ; chemistry ; HeLa Cells ; Humans ; Molecular Structure ; Plant Extracts ; chemistry ; toxicity ; Plant Leaves ; chemistry ; Plant Stems ; chemistry ; Plants, Medicinal ; chemistry

Objective: To determine whether the adenine base editor (ABE7.10) can be used to fix harmful mutations in the human G6PC3 gene. Methods: To investigate the safety of base-edited embryos, off-target analysis by deep sequencing was used to examine the feasibility and editing efficiency of various sgRNA expression vectors. The human HEK293T mutation models and human embryos were also used to test the feasibility and editing efficiency of correction. Results: ①The G6PC3(C295T) mutant cell model was successfully created. ②In the G6PC3(C295T) mutant cell model, three distinct Re-sgRNAs were created and corrected, with base correction efficiency ranging from 8.79% to 19.56% . ③ ABE7.10 could successfully fix mutant bases in the human pathogenic embryo test; however, base editing events had also happened in other locations. ④ With the exception of one noncoding site, which had a high safety rate, deep sequencing analysis revealed that the detection of 32 probable off-target sites was <0.5% . Conclusion: This study proposes a new base correction strategy based on human pathogenic embryos; however, it also produces a certain nontarget site editing, which needs to be further analyzed on the PAM site or editor window.
Humans ; Gene Editing ; CRISPR-Cas Systems ; Adenine ; HEK293 Cells ; Mutation ; Glucose-6-Phosphatase/metabolism*

OBJECTIVE: To study the clinical features of children with periodic fever, aphthous stomatitis, pharyngitis, and adenitis (PFAPA) syndrome, a polygenic and multifactorial autoinflammatory disease with unknown pathogenesis. METHODS: A retrospective analysis was performed on the medical data of 13 children with PFAPA syndrome. RESULTS: All 13 children had disease onset within the age of 3 years, with a mean age of onset of (14±10) months. They all had periodic fever, with 8-18 attacks each year. The mean interictal period of fever was (30±5) days. Pharyngitis, cervical adenitis, and aphthous stomatitis were the three cardinal symptoms, with incidence rates of 100% (13/13), 85% (11/13), and 38% (5/13) respectively. There were increases in white blood cells, C-reactive protein, and erythrocyte sedimentation rate during fever. Of all the 13 children, 6 underwent whole exome sequencing and 7 underwent panel gene detection for autoinflammatory disease, and the results showed single heterozygous mutations in the CONCLUSIONS For children with unexplained periodic fever with early onset accompanied by pharyngitis, cervical adenitis, aphthous stomatitis, elevated inflammatory indices, and good response to glucocorticoids, PFAPA syndrome should be considered. This disorder has good prognosis, and early diagnosis can avoid the long-term repeated use of antibiotics.
Child ; Child, Preschool ; Fever/etiology* ; Humans ; Infant ; Lymphadenitis/diagnosis* ; Pharyngitis/drug therapy* ; Pyrin ; Retrospective Studies ; Stomatitis, Aphthous/genetics*