Objective To investigate the prevalence of hypertension in patients with obstructive sleep apnea hypopnea syndrome (OSA) and the relationship between blood pressure (BP) with respiratory ventilation function. Methods Patients with OSA (n=3 607) were included in this study and divided into 4 groups based on their apnea-hypopnea index (AHI) scores:control group (control, n=354) with AHI<5;mild OSAHS (mild, n=658) with 5≤AHI<15;moderate OSAHS (moder?ate, n=753) with 15≤AHI<30;and severe OSA (severe, n=1 842) with AHI≥30. BP were measured at 4 time points (daytime, evening, midnight, and morning). The midnight/ daytime average BP (RN/D) and morning/evening average BP (RM/E) ratios were calculated. Finally, the general profiles, prevalence of hypertension and average BP of 4 time points were compared among 4 groups. The correlations of MBP with AHI and LSaO2 were also analyzed. Results The prevalence of hypertension as well as MBP at daytime and in the morning in the mild group (34.65%), moderate group (39.04%) and severe group (55.37%) were all higher than that in control group (22.32%)(all P<0.05). The prevalence of hypertension as well as MBP at daytime and in the morning were both higher in severe group than those in mild and moderate groups. MPB in the evening and at midnight was higher in severe group than that in moderate group than that in mild group than in control group (P<0.05). Average MBP of all four time points rise with increasing AHI (all P<0.05). The ratios of nighttime to daytime MBP (RN/D) and of morning to evening MBP (RM/E) increased with the severity of the illness (F=9.821, 18.957;P<0.001). The day? time BP correlated well with AHI and lowest oxygen saturation (LSaO2;systolic BP, r=0.195,-0.206;diastolic BP, r=0.248,-0.251, P<0.01). Daytime MBP increased gradually with increasing AHI until MPB reached 61-65, at which point it either plateaued or dropped slightly. Conclusion OSA patients have a significant increase in midnight and morning BP and lose normal BP nycterohemeral rhythm. OSA is an independent risk factor for hypertension.

Long non-coding RNA urothelial carcinoma associated 1 (UCA1) is initially discovered and named in bladder cancer tissue,which is highly expressed in multi types of tumor tissues,such as bladder cancer,ovarian cancer,lung cancer,suggesting that UCA1 acts as oncogene.UCA1 is confirmed to regulate tumor cell proliferation,apoptosis,invasion and migration,which plays an important role in the occurrence and development of cancers.UCA1 is expected to become a new biomarker for diagnosis,prognosis and drug susceptibility,which may be a promising therapeutic target of cancer.

Adult ; Female ; Genotype ; Humans ; Male ; Middle Aged ; Phenotype ; Thrombophilia ; genetics ; Thrombosis ; Young Adult

Objective To evaluate the accuracy of point-of-care testing (POCT) for blood glucose monitoring in critically ill patients.Methods Two hundred and forty critically ill patients,of both sexes,aged 20-88 yr,with Acute Physiology and Chronic Health Evaluation Ⅱ score of 1-45,were enrolled.The venous,arterial and capillary blood samples were collected to determine the real-time blood glucose level using glucose oxidase (GOD) and glucose dehydrogenase (GDH) methods.The blood glucose level measured by central laboratory hexokinase method simultaneously was served as standard level.Error Grid analysis (EGA) and Bland-Altman analysis were used to determine accuracy and consistency,respectively.The accuracy of real-time blood glucose levels within the consistent limits was evaluated.Results 1.The results of EGA showed that 98.7 ％,98.3 ％,98.3 ％(GDH method) and 96.2％,96.6％,96.7％ (GOD method) of the difference between venous,arterial and capillary blood glucose levels measured and the standard level were located in the A and B zones,respectively,and 1.2％,1.7％,1.7％ (GDH method) and 2.9％,3.3％,3.3％ (GOD method) in the D zone.0.8％ (GOD method) of the difference between venous blood glucose levels and the standard level were located in the C zone.2.Bland-Altman analysis showed that the difference between the standard level and glucose level measured in blood samples from the vein,artery and capillary.was-0.1,-0.3,-0.2 mmol/L (GDH method) and-0.9,-1.0,-0.9 mmol/L (GOD method),respectively,and the incidence beyond the upper and lower limits of consistency zone was 4.5 ％,6.7 ％,6.6 ％ (GDH method) and 4.6 ％,5.0 ％,7.1％ (GOD method),respectively.The accuracy of venous,arterial and capillary blood glucose levels within the consistent limits was 94.3 ％,92.1％,93.7％ (GOD method) and 96.6％,95.1％,95.5％ (GDH method),respetively.Conclusion The accuracy of POCT for blood glucose monitored by GOD and GDH methods is good in critically ill patients,but it is possible to overestimate the patient's real glucose level.

Objective To investigate the value of multi-slice spiral CT image texture analysis in differentiating metastatic (MLN) from non-metastatic lymph nodes (NLN) in patients with rectal cancer.Methods Thirty five patiets with rectal cancer who were pathologically confirmed by total mesorectum excision were included retrospectively,with regional lymph nodes (short-axis diameter of larger than 3 mm)found in preoperative CT images.All the patients underwent preoperative abdominal and pelvic dynamic contrast-enhanced CT scan.Regional lymph nodes were identified according to pathological findings,and were divided into MLN and NLN groups.The short-axis diameter,short-to long-axis diameter ratio of lymph nodes were manually measured and calculated,and the texture features,including skewness,kurtosis,variance,entropy and inverse difference moment,were analyzed.The above parameters between MLN and NLN groups were compared using independent sample t test or Mann-Whitney U test.ROC curve analysis was performed regarding the statistically significant parameters and the areas under curve (AUC) were calculated.Multivariate Logistic regression analysis was accomplished to obtain the independent predictive factor of diagnosing regional lymph nodes.Results A total of 68 regional lymph nodes were obtained and consisted of 31 MLNs and 37 NLNs.The short-axis diameter,kurtosis,and entropy of the MLN group were significantly higher than those of the NLN group (all P＜0.05).Whereas,the short-to long-axis diameter ratio,skewness,variance,and inverse difference moment did not differ significantly between the two groups (all P＞0.05).The AUC for distinguishing MLN from NLN of the short-axis diameter,kurtosis and entropy were 0.79,0.67,and 0.85,respectively.Multivariate logistic regression analysis showed that only entropy (odds ratio=8.48,95％ confidence interval was 3.01 to 23.92,P＜0.01) was screened out as the independent variable,which suggested that the entropy was the unique predictor for characterizing regional lymph nodes of rectal cancer.Conclusion Multi-slice spiral CT images texture analysis can facilitate the accurate differentiation between MLN and NLN in patients with rectal cancer,and especially the entropy has the optimal reference significance.

Objective To establish the rat overlap syndrome (OS) model of intermittent hypoxia (IH) and emphyse-ma, explore the systematic and endothelial inflammation status, and observe the changes of endothelial progenitor cell (EPC) level in peripheral blood. Methods Sixty male Wistar rats were randomly divided into four groups:normal oxygen control group (A), IH group (B), emphysema group (C) and OS group (D). The rat model of emphysema was established by smoke ex-posure for 16 weeks. From the 13-week, pre-programmed intermittent hypoxia/re-oxygenation (IH/ROX) exposure was giv-en in the meantime of smoke exposure. After exposure, ELISA method was used to detect values of tumor necrosis factor al-pha (TNF-α) and interleukin (IL)-6 in plasma and in the endothelium of right common carotid artery. Real-time-PCR assay was used to analyze RhoA mRNA level in the endothelium of right common carotid artery. The percentage of intima-media thickness (IMT) in the all wall of right carotid artery (C-IMT%) was measured. Flow cytometry was used to detect EPC levels. Results The values of TNF-α, IL-6, RhoA mRNA and C-IMT%were significantly higher in D group than those of A, B and C groups (P<0.05). The EPC levels were significantly lower in D group than those of A, B and C groups (P<0.05). Con-clusion OS rats had more serious vascular endothelial injury than that of emphysema or IH rats. Meanwhile, the repair ca-pacity of EPC for endothelium was worse, which increased the risk of cardiovascular diseases.

Researches show that exosome can take park in the development and progression of breast cancer by means of mediating the intercellular communication,which can promote cancer metastasis and drug resistance,thus influencing the treatment effect of patients with cancers.Exosome is closely related with clinical stage and prognosis of breast cancer,which has a potential value in the early diagnosis and biological therapy of breast cancer and provides a new hope for the treatment of breast cancer.

Objective: To investigate the epidemiological characteristics of influenza outbreaks in Zhejiang Province from 2013 to 2022, so as to provide insights into influenza prevention and control. Methods: Data pertaining to influenza outbreaks reported in Zhejiang Province from 2013 to 2022 were collected from National Influenza Surveillance System in China, including time, region, cases and pathogen types of influenza outbreaks. The temporal, spatial and pathogen distribution of influenza outbreaks were analyzed using a descriptive epidemiological method. Results: A total of 577 influenza outbreaks involving 448 698 individuals were reported in Zhejiang Province from 2013 to 2022, and the overall attack rate was 5.34% (23 974 cases), with no death reported. The lowest attack rate of influenza was 0.26%, and the highest was 80.00%, with a median attack rate of 10.89% (interquartile range, 24.26%). The outbreak had the shortest duration of 1.00 day, and the longest duration of 59.00 days, with a median duration of 9.00 (interquartile range, 11.00) days. There were 387 influenza outbreaks that occurred between November and January of the following year (67.07%), and the three highest numbers of outbreaks were reported in Hangzhou City (310 outbreaks), Wenzhou City (51 outbreaks) and Jinhua City (46 outbreaks). There were 395 outbreaks reported in urban regions (68.46%), 93 in counties and townships (16.12%) and 89 in rural regions (15.42%), and influenza outbreaks predominantly occurred in primary schools (487 outbreaks, 84.40%). In addition, the types of pathogens were alternately prevalent, with influenza B virus (241 outbreaks, 41.77%) and A/H3N2 virus (232 outbreaks, 40.21%) as predominant subtypes. Conclusions Influenza outbreaks mainly occurred in winter in Zhejiang Province from 2013 to 2022, and primary schools were main places of influenza outbreaks, while influenza B virus and A/H3N2 virus were predominant subtypes. It is necessary to reinforce the surveillance and report of influenza-like illness in schools and improve the coverage of influenza vaccination to prevent influenza outbreaks.

Poly ( duenedumethylammonuum chlorude ) ( PDDA ) functuonaluzed sulver nanopartucles ( AgNPs ) prepared wuth PDDA as the protectuve and reductuve agents was combuned wuth graphene oxude ( GO ) to prepare PDDA functuonaluzed cubuc sulver nanopartucles ( C-AgNPs)/GO composute, whuch was then modufued on a glassy carbon electrode ( GCE) to form C-AgNPs-PDDA/GO/GCE. The surface morphologues of dufferent modufued electrodes were characteruzed by scannung electron mucroscope ( SEM ) , and theur correspondung cycluc voltammetruc ( CV) behavuors were unvestugated, unducatung that the composute of C-AgNPs-PDDA/GO exhubuted excellent electrocatalytuc oxudatuon actuvuty to DA and NO-2 . By usung dufferentual pulse voltammetry, the responses of C-AgNPs-PDDA/GO/GCE were lunear un the ranges of 0 . 030-0 . 300 μmol/L and 0 . 300-300 μmol/L wuth detectuon lumut of 9. 8 nmol/L (S/N=3) for DA, and 30. 0-2300 μmol/L wuth detectuon lumut of 12. 6 μmol/L (S/N=3) for NO-2, respectuvely. The modufued electrode dusplayed good selectuvuty, reproducubuluty and stabuluty, and could be used for the sumultaneous determunatuon of DA and NO-2 un human serum samples wuth recoverues of 97. 4%-104. 2% and 98. 0%-102. 8%, respectuvely. Compared wuth spectrophotometruc method, the determunatuon results were satusfactory, showung that the modufued electrode possessed a potentual applucatuon value.

In order to research the biologic activity of osteoblast-stimulating factor 1 (OSF-1), the pPIC9K/osf-1 yeast expression vector was constructed to express and purify OSF-1. Firstly, the osf-1 gene sequence was obtained by artificial synthesis and cloned into Pichia pastoris expression vector pPIC9K to generate pPIC9K/osf-1. The recombinant plasmid was linearized by Sac I and transformed into P. pastoris GS115 by electroporation. Recombinant P. pastoris GS115/ pPIC9K/osf-1 was screened by MD and G418-YPD plates and further identified by PCR. The positive P. pastoris was induced with 1% methanol at 25 degrees C for 96 h. The target protein was analyzed by SDS-PAGE showing a special band about 18 kDa. The target protein was successfully purified from the supernatant of the broth using ion exchange chromatography of SP-Sephadex C-50. The purity of target protein was above 98%. Western blotting appeared a good antigenicity of the purified protein. Bioassay results show that the recombinant protein OSF-1 can promote the differentiation and proliferation of osteoblasts MC3T3-E1. We successfully expressed OSF-1 by recombinant P. pastoris for further development of anti-osteoporosis of research and industrial production of OSF-1.
Blotting, Western ; Carrier Proteins ; biosynthesis ; Chromatography, Affinity ; Cytokines ; biosynthesis ; Electrophoresis, Polyacrylamide Gel ; Electroporation ; Pichia ; metabolism ; Polymerase Chain Reaction ; Recombinant Proteins ; biosynthesis