Objective To explore the relationship of plasma level of B-type natriuretic peptide (BNP) with cardiovascular risk,the severity of coronary heart disease(CHD),and the short-term prognosis in patients with type 2 diabetes. Methods 154 patients with type 2 diabetes,of them 95 cases complicated with CHD and 65 with hyper-tension were selected in this study. The CHD patients were diveded into 3 groups: AMI(n=32), UAP(n=33) and SAP(n=30). The relationship of the plasma BNP levels with cardiovascular risks, with each coronary heart disea-ses,were observed. The patients were followed up for 6 months to study the predicting role of BNP on the death in pa-tients accompanied with CHD. Results The plasma BNP level was (397.34±217.79) ng/L, which was correlated with age, CRP, hypertension and CHD (r=0.631,0.672, 0.762,0.857, P<0.05 for each);the plasma BNP levels increased with age(r=0.896,P<0.01):(57.6±12.3) ng/L in patients <50 years old,(146.2±53.4)ng/L in patients 50≤and < 59 years old, (388.4±67.5) ng/in patients 60≤and < 69 years old, and (423.8±132.6) ng/L in patients≥70 years old (P<0.01 or P<0.05). The plasma BNP levels, was higher in patients with hyper-tension than that in patients without hypertension [(314.7±125.3) ng/L vs (136.8±98.7) ng/L, P<0.01];Higher in patients with CHD than that in patients without CHD [(425.03±200.80)ng/L vs (37.64±21.57) ng/L,P<0.01)]. The short-term prognosis of patients with CHD was correlated with the levels of BNP, and BNP levels≥485 ng/L may be an independent predicting factor for cardiac death within one month. Conclusions Plas-ma levels of BNP were associated with some cardiovascular risks,which may be one of biomarkers for cardiovascular risks in patient complicated with CHD.

This study was to assess the chronic morbidity and metabolic disordelters in 262 patients with type 2 diabetes.Of all participants,64(24.4%)coexisted with peripheral neuropathy,34(13.0%)combined with peripheral vascular disease.41(15.6%)were diagnosed as diabetic retinopathy,and 46 (17.6%)had concurrent diabetic nephropathy.In comparison with diabetic patients without these complications,those with the chronic conditions generally had higher plasma glucose,blood pressure or body mass index.

The latest research progress on quantitative determination methods of main active components-lignans from Schisandra chinensis and its preparations has been summarized, such as spectrophotometry, thin-layer chromatography scanning, high performance liquid chromatograpy, gas chromatography-mass spectrometry and capillary electrochromatography. The characteristics and application areas of every analytical method have also been stated. It offers reference on quality control of crude drug and its preparations of S. chinensis.
Capsules ; Chromatography, High Pressure Liquid ; methods ; Chromatography, Thin Layer ; methods ; Drugs, Chinese Herbal ; administration & dosage ; chemistry ; Fruit ; chemistry ; Gas Chromatography-Mass Spectrometry ; Lignans ; analysis ; Plants, Medicinal ; chemistry ; Quality Control ; Schisandra ; chemistry

OBJECTIVEGastric cancer cells are insensitive to tumor necrosis factor-related apoptosis-inducing ligand (TRAIL). To sensitize gastric cancer cells to TRAIL, we treated gastric cancer MGC803 cells with TRAIL and cisplatin.

METHODSCell proliferation was measured using MTT assay. Cell apoptosis was determined by flow cytometry. Expression of proteins was analyzed by Western blot. The distribution of lipid rafts and death receptors was analyzed by immunofluorescence microscopy. MGC803 cells were pretreated with 50 mg/L nystatin for 1 h, and followed by the treatment of cisplatin and TRAIL.

RESULTS100 µg/L TRAIL resulted in (8.51 ± 3.45)% inhibition of cell proliferation and caused (3.26 ± 0.89)% cell apoptosis in MGC803 cells. Compared with the treatment with cisplatin alone, treatment with TRAIL (100 µg/L) and cisplatin (8.49 mg/L, IC(50) dose of 24 h) led to a dramatic increase in both inhibition of cell proliferation [(52.58 ± 4.57)% vs. (76.43 ± 5.35)%, P < 0.05] and cell apoptosis [(23.10 ± 3.41)% vs. (42.56 ± 4.11)%, P < 0.05]. Moreover, cleavage of caspase-8 and caspase-3 was detected. TRAIL (100 µg/L) did not induce obvious lipid rafts aggregation and death receptor 4 (DR4) clustering, while cisplatin (8.49 mg/L) significantly promoted the localization of DR4 in aggregated lipid rafts. Pretreatment with 50 mg/L nystatin, a cholesterol-sequestering agent, triggered (3.66 ± 0.52)% cell apoptosis after 24 h. Pretreatment with nystatin for 1 h before the addition of 8.49 mg/L cisplatin for 24 h caused a decreased tendency to cell apoptosis [(25.74 ± 3.28)% vs. (22.76 ± 2.97)%]. While, pretreatment with nystatin before the addition of cisplatin and TRAIL, the proportion of apoptotic cells decreased from (43.16 ± 4.26)% to (31.52 ± 3.99)% (P < 0.05).

CONCLUSIONCisplatin enhances TRAIL-induced apoptosis in gastric cancer MGC803 cells through clustering death receptors into lipid rafts.

Antineoplastic Agents ; administration & dosage ; pharmacology ; Apoptosis ; drug effects ; Caspase 3 ; metabolism ; Caspase 8 ; metabolism ; Cell Line, Tumor ; Cell Proliferation ; drug effects ; Cisplatin ; administration & dosage ; pharmacology ; Dose-Response Relationship, Drug ; Humans ; Membrane Microdomains ; metabolism ; Nystatin ; pharmacology ; Receptors, TNF-Related Apoptosis-Inducing Ligand ; metabolism ; Stomach Neoplasms ; metabolism ; pathology ; TNF-Related Apoptosis-Inducing Ligand ; pharmacology

Oxaliplatin-based chemotherapy is used for treating gastric cancer. Autophagy has been extensively implicated in cancer cells; however, its function is not fully understood. Our study aimed to determine if oxaliplatin induce autophagy in gastric cancer MGC803 cells and to assess the effect of autophagy on apoptosis induced by oxaliplatin. MGC803 cells were cultured with oxaliplatin. Cell proliferation was measured using MTT assay, and apoptosis was determined by flow cytometry. Protein expression was detected by Western blot. Autophagy was observed using fluorescent microscopy. Our results showed that the rate of apoptosis was 9.73% and 16.36% when MGC803 cells were treated with 5 and 20 μg/mL oxaliplatin for 24 h, respectively. In addition, caspase activation and poly ADP-ribose polymerase (PARP) cleavage were detected. Furthermore, when MGC803 cells were treated with oxaliplatin for 24 h, an accumulation of punctate LC3 and an increase of LC3-II protein were also detected, indicating the activation of autophagy. Phosphorylation of Akt and mTOR were inhibited by oxaliplatin. Compared to oxaliplatin alone, the combination of autophagy inhibitor chlorochine and oxaliplatin significantly enhanced the inhibition of cell proliferation and the induction of cell apoptosis. In conclusion, oxaliplatin-induced protective autophagy partially prevents apoptosis in gastric cancer MGC803 cells. The combination of autophagy inhibitor and oxaliplatin may be a new therapeutic option for gastric cancer.
Antineoplastic Agents ; pharmacology ; Apoptosis ; drug effects ; Autophagy ; drug effects ; Caspase 3 ; metabolism ; Caspase 8 ; metabolism ; Cell Line, Tumor ; Cell Proliferation ; drug effects ; Humans ; Organoplatinum Compounds ; pharmacology ; Phosphatidylinositol 3-Kinase ; metabolism ; Poly(ADP-ribose) Polymerases ; metabolism ; Proto-Oncogene Proteins c-akt ; metabolism ; Signal Transduction ; drug effects ; Stomach Neoplasms ; metabolism ; pathology ; TOR Serine-Threonine Kinases ; metabolism

Adolescent ; Adult ; Aged ; Aged, 80 and over ; Drugs, Chinese Herbal ; administration & dosage ; therapeutic use ; Female ; Follow-Up Studies ; Humans ; Injections, Epidural ; Intervertebral Disc Displacement ; complications ; drug therapy ; physiopathology ; prevention & control ; Low Back Pain ; complications ; drug therapy ; Lumbar Vertebrae ; injuries ; Male ; Middle Aged ; Pharmaceutical Preparations ; administration & dosage ; Recovery of Function ; Recurrence ; Time Factors ; Treatment Outcome

The study was aimed to explore the mechanism of SYK and CBL family of ubiquitin ligases in Bufalin-induced HL-60 cells apoptosis. Cell viability was tested by trypan blue staining and apoptosis was detected by using flow cytometry. The expressions of CBL and CBL-b and the phosphorylation of SYK were detected by using immunoprecipitation and Western blot. The results showed that Bufalin inhibited HL-60 cell proliferation in time- and dose-dependent manners. IC(50) of suppressing cell viability at 24, 48 and 72 hours were about 26.3, 7.8 and 2.0 nmol/L respectively. The high dose of bufalin already induced apoptosis of HL-60 cells at 8 hours. SYK was quickly phosphorylated, and the expressions of CBL and CBL-b were down-regulated after treatment with Bufalin. It is concluded that SYK activation and CBL protein down-regulation may be involved in Bufalin-induced HL-60 cell apoptosis.
Apoptosis ; drug effects ; Bufanolides ; pharmacology ; Cell Proliferation ; drug effects ; Down-Regulation ; Gene Expression Regulation, Leukemic ; HL-60 Cells ; Humans ; Intracellular Signaling Peptides and Proteins ; metabolism ; Protein-Tyrosine Kinases ; metabolism ; Proto-Oncogene Proteins c-cbl ; metabolism ; Signal Transduction ; Syk Kinase

Objective:To explore the effects of tensile force on vascular lumen formation in three-dimensional printed tissue.Methods:The experimental research method was used. Human umbilical vein endothelial cells (HUVECs) were extracted from discarded umbilical cord tissue of 3 healthy women (aged 22 to 35 years) who gave birth in the Department of Gynaecology and Obstetrics of Suzhou Ruihua Orthopaedic Hospital from September 2020 to May 2021. Human skin fibroblasts (HSFs) were extracted from discarded normal skin tissue of 10 male patients (aged 20 to 45 years) who underwent wound repair in the Department of Hand Surgery of Suzhou Ruihua Orthopaedic Hospital from September 2020 to September 2022. After identification of the two kinds of cells, the 4 th to 6 th passage of cells were taken for the follow-up experiments. HUVECs and HSFs were used as seed cells, and polycaprolactone, gelatin, hyaluronic acid, and fibrin were used as scaffold materials, and the three-dimensional printed vascularized tissue was created by three-dimensional bioprinting technology. The printed tissue with polycaprolactone scaffold of 6 and 10 mm spacing, and without polycaprolactone scaffold were set as 6 mm spacing polycaprolactone group, 10 mm spacing polycaprolactone group, and non-polycaprolactone group, respectively. After 4 days of culture, the printed tissue in 10 mm spacing polycaprolactone group was selected to detect the cell survival by cell viability detection kit, and the cell survival rate was calculated. After 14 days of culture, the printed tissue in three groups were taken, and the shape change of tissue was observed by naked eyes; immunofluorescence staining was performed to observe the arrangement of filamentous actin, and lumen diameter, total length, and number of branches of vessel in the tissue. The tissue with micro-spring structure in the above-mentioned three groups was designed, printed, and cultured for 9 days, and the tensile force applied in the printed tissue was measured according to the force-displacement curve. The number of samples was all 3 in the above experiments. Data were statistically analyzed with one-way analysis of variance and Tukey test. Results:After 4 days of culture, the cell survival rate in printed tissue in 10 mm spacing polycaprolactone group was (91.3±2.2)%. After 14 days of culture, the shape change of printed tissue in non-polycaprolactone group was not obvious, while the shape changes of printed tissue in 6 mm spacing polycaprolactone group and 10 mm spacing polycaprolactone group were obvious. After 14 days of culture, the arrangement of filamentous actin in the printed tissue in non-polycaprolactone group had no specific direction, while the arrangement of filamentous actin in the printed tissue in 6 mm spacing polycaprolactone group and 10 mm spacing polycaprolactone group had a specific direction. After 14 days of culture, The vascular lumen diameters of the printed tissue in 6 mm spacing polycaprolactone group and 10 mm spacing polycaprolactone group were (6.0±1.3) and (10.8±1.3) μm, respectively, which were significantly larger than 0 μm in non-polycaprolactone group ( P<0.05), and the vascular lumen diameter of printed tissue in 10 mm spacing polycaprolactone group was significantly larger than that in 6 mm spacing polycaprolactone group ( P<0.05); the total length and number of branches of blood vessel in the printed tissue in 6 mm spacing polycaprolactone group and 10 mm spacing polycaprolactone group were significantly shorter or less than those in non-polycaprolactone group ( P<0.05), and the total length and number of branches of blood vessel in the printed tissue in 10 mm spacing polycaprolactone group were significantly shorter or less than those in 6 mm spacing polycaprolactone group. After 9 days of culture, the tensile forces applied in the printed tissue in 6 mm spacing polycaprolactone group and 10 mm spacing polycaprolactone group were (2 340±59) and (4 284±538) μN, respectively, which were significantly higher than 0 μN in non-polycaprolactone group ( P<0.05), and the tensile force applied in the printed tissue in 10 mm spacing polycaprolactone group was significantly higher than that in 6 mm spacing polycaprolactone group ( P<0.05). Conclusions:The three-dimensional printed scaffold structure can exert different tensile force in the printed tissue, and the vascular lumen diameter of the printed tissue can be regulated by adjusting the tensile force.

To elucidate the principal of orthogonal factor analysis, using an example of factor analysis of metabolic syndrome. The basic structures and the fundamental concepts of orthogonal factor analysis were introduced and data involving 1877 women aged of 35-65 years, selected from a cross-sectional study, which was conducted in 1998 - 2001 in Shanghai, were included in this study. Factor analysis was carried out using principle components analysis with Varimax orthogonal rotation of the components of the metabolic syndrome. The different components of the metabolic syndrome were not linked closely with the other components and loaded on the six different factors,which mainly reflected by the variables of obesity, blood pressure, plasma glucose, plasma insulin, triglycerides and HDL-cholesterol respectively. Six major factors of the metabolic syndrome were uncorrelated with each other and explained 86% of the variance in the original data. The factor score and total factor score for the individual could be obtained according to the component score coefficient matrix. Although the components of the metabolic syndrome were related statistically, the finding of six factors suggested that the components of the metabolic syndrome did not show high degrees of intercorrelation. As a linear method of data reduction, the mode reduced a large set of measured intercorrelation variables into a smaller set of uncorrelated factors, which explained the majority of the variance in the original variables. Factor analysis was well suited for revealing underlying patterns or structure among variables showing high degrees of intercorrelation.
Adult ; Aged ; Cross-Sectional Studies ; Female ; Genomics ; Humans ; Metabolic Syndrome ; epidemiology ; genetics ; Middle Aged ; Models, Statistical ; Prevalence ; Proteomics

OBJECTIVETo explore the adult lipid profile of Huayang community from 1998 to 2000 and Caoyang communities in 2001.

METHODSRepresentative serum samples of 5628 adults (aged 20 - 95 years) were obtained in Huayang and Caoyang communities during 1998.9 and 2001.11. Standard epidemiology questionnaire, physical check-ups and serum lipids data were analyzed.

RESULTSAfter standardization to Chinese census statistics of 2000, the age-and sex-standardized means of total cholesterol, HDL-C, LDL-C and triglycerides of the two communities (Huayang vs. Caoyang) were 5.01 mmol/L vs. 4.43 mmol/L, 1.28 mmol/L vs. 1.32 mmol/L, 3.37 mmol/L vs. 2.99 mmol/L, 1.97 mmol/L vs. 1.60 mmol/L respectively, and the age- and sex- standardized prevalence of dyslipidemia was 52.9% vs. 25.1%, and the prevalence for borderline dyslipidemia was 76.0% vs. 56.2%, respectively. The decreasing order of dyslipidemia prevalence of the two communities was: elevated TG, decreased HDL-C, elevated LDL-C and TC. The standardized proportions of optimal HDL-C level were only 15.7% and 16.1% in Huayang and Caoyang respectively which was much lower than these of TG, LDL and TC.

CONCLUSIONSThe standardized prevalence of adult dyslipidemia and borderline dyslipidemia in the two communities were high. Dyslipidemia of the two communities was TG and decreased.

Adult ; Aged ; Aged, 80 and over ; China ; epidemiology ; Cholesterol, HDL ; blood ; Cholesterol, LDL ; blood ; Cross-Sectional Studies ; Dyslipidemias ; blood ; epidemiology ; Humans ; Middle Aged ; Prevalence ; Triglycerides ; blood ; Young Adult