Objective To investigate the effects of glucocorticoid(GC) on the expression of CD80 and CD4+CD25+T cells in peripheral blood lymphocyte of patients with multiple sclerosis (MS). Methods With flow cytometer,the positive rates of CD80 and CD4+CD25+T cells in peripheral blood lymphocyte were detected in 21 acute MS patients pre and post treatment separately,and compared with the nomal control group.The secols of Expanded Disablility Status Scale(EDSS) were compared pre and post treatment in MS patients.Results The positive rate of CD80[(5.031?1.782)%]in the MS patients pre treatment was obviously less than that in control group's [(6.436?2.035)%](P

Objective:To explore the risk factors of recurrence after laparoscopic myomectomy and provide references for clinical prevention and treatment.Methods:The clinical data of 216 patients who underwent laparoscopic myomectomy in Ningjin County People′s Hospital from June 2016 to December 2018 were analyzed retrospectively. The recurrence rate at 12 months after the operation was followed up, and the risk factors influencing the recurrence after laparoscopic myomectomy were screened by univariate analysis and multivariate Logistic regression model.Results:After followed up for 12 months after the operation, 24 cases had recurrence, with a recurrence rate of 11.11%(24/216). Univariate analysis showed that the recurrence after laparoscopic myomectomy was significantly correlated with surgical age, age at menarche, number of fibroids, uterine size, and gonadrotropin releasing hormone agonist (GnRH-a) treatment after the operation ( P<0.05), but was not significantly correlated with body mass index, fibroid size, fibroid type, and pregnancy after the operation ( P>0.05). Multivariate Logistic regression analysis showed that surgical age ≥ 35 years old ( OR=1.289, 95% CI 1.013-1.641), age at menarche <13 years old ( OR=1.765, 95% CI 1.167 - 2.669), and number of fibroids ≥ 2 ( OR=2.487, 95% CI 1.442 - 4.288) were independent risk factors for recurrence after laparoscopic myomectomy ( P<0.05), while GnRH-a treatment after the operation ( OR = 0.696, 95% CI 0.510-0.951) was its protective factor ( P<0.05). Receiver operating characteristic (ROC) curve analysis showed that the area under the curve of surgical age ≥ 35 years old, menarche age <13 years old, and number of fibroids ≥ 2 for predicting recurrence after laparoscopic myomectomy was 0.641 (95% CI 0.573 - 0.705), 0.719 (95% CI 0.654 - 0.778) and 0.622 (95% CI 0.554 - 0.687), and age at menarche had the greatest diagnostic efficiency. Conclusions:Surgical age ≥ 35 years old, age at menarche <13 years old, and number of fibroids ≥ 2 are independent risk factors for recurrence after laparoscopic myomectomy. Intraoperative ultrasound and postoperative GnRH-a treatment can help reduce the risk of postoperative recurrence.

OBJECTIVE To estimate the distribution of pathogens of nosocomial infection in intensive care units,the sites where infections often taken place and the related antibiotic-resistance of bacteria.METHODS Various samples of bacteria from intensive care units have been examined by applying half-automatic analyzer ATB Expression,with bacteria inspecting cards and drug-sensitivity cards,all from Bio-Merieux,France.RESULTS Totally 153 strains of nosocomial pathogens have been found,where Acinebacter baumannii,fungi and Pseudomonas aeruginosa ranked top three,with rates of 32.0%,16.3%,and 15.0%,respectively.About 45.8% of pathogens were found in samples from the lower respiratory tract.Approximately 4.3% of A.baumannii showed drug-resistance to imipenem.However,more than 50.0% of A.baumannii presented its strong drug-resistance to rest of eight regular antibiotics.CONCLUSIONS A.baumannii is a dominating pathogen to cause nosocomial infection in intensive care units,and has shown strong multi-drug-resistance,which should incur high clinical attention.It comes to be crucial to highlight sanitization and sterilization operation,applying proper antibiotics in order to reduce appearance of bacteria with drug-resistance.

The stereoselective hydrolysis of esmolol in whole blood and in its separated components from rat,rabbit and human was investigated.Blood esterase activities were variable in different species in the order of rat ＞ rabbit ＞ human.Rat plasma showed the high esterase activity and had no stereoselectivity to enantiomers.Rabbit red blood cell (RBC) membrane,RBC cytosol and plasma all hydrolyzed esmolol but with different esterase activity,whereas the hydrolysis in RBC membrane and cytosol showed significant stereoselectivity towards R-(+)-esmolol.Esterase in RBC cytosol from human blood mainly contributed to the esmolol hydrolysis,which was demonstrated with no stereoselctivity.Esterase in human plasma showed a low activity,but a remarkable stereoselectivity with R-(+)-esmolol.In addition,the protein concentration affected the hydrolysis behavior of esmolol in RBC suspension.Protein binding of esmolol enantiomers in human plasma,human serum albumin (HSA) and α1-acid glycoprotein (AGP) revealed that there was a significant difference in bound fractions between two enantiomers,especially for AGP.Our results indicated that the stereoselective protein binding might play a role in the different hydrolysis rates of esmolol enantiomers in human plasma.

A novel series of benzyl urea analogues based on the structural modification of sorafenib were synthesized. Their in vitro antitumor activities against MX-1, HepG2, Ketr3 and HT-29 were evaluated using the standard MTT assay. While several target compounds showed inhibitory activity against multiple cancer cell lines, compound 9 was of particular interest, demonstrating IC50 values (5.69-13.6 micromol x L(-1)) comparable to those of sorafenib. Furthermore, compounds 20 and 23 showed more potent inhibitory activity against HT-29 and MX-1 when compared to sorafenib. In particular, compound 20 bearing the N-3-pyridyl moiety not only exhibited greater inhibitory activity against HT-29 cell line (IC50 3.82 micromol x L(-1)), but also had improved solubility at pH 7.2, is worthy of further investigation as a lead to identify novel antitumor agents.

ObjectiveToinvestigatethecorrelationofobstructivesleepapnea(OSAS)andsilentbrain infarction (SBI) in elderly population. Methods A total of 1658 old subjects aged 60 in Beijing and Qingdao w ere screened. Polysomnography (PSG) w as used to conduct the diagnosis and grade of OSAS. MRI w as used to diagnose SBI. Results In al elderly subjects, the prevalences of OSAS and SBI w ere 32.1% and 22.4%. There w ere significant differences in the constituent ratio of the patients w ith hypertension and diabetes, as w el as apnea-hypopnea index (AHI), oxygen desaturation index (ODI), mean oxygen saturation and the low est oxygen saturation betw een the patients w ith OSAS of different severity and the control group. With the increased severity of OSAS, the incidence of SBI increased significantly. The incidences of patients w ith non-OSAS and mild, moderate and severe patients w ith OSAS w ere 13.2%, 30.5%, 43.5%, and 68.8%, respectively. There w as a significant difference betw een the 2 groups ( χ2 =13.365, P=0.004). Multivariable logistic regression analysis showed that hypertension (odds ratio [OR] 2.254, 95%confidence interval [CI] 1.325 to 8.347;P=0.002), diabetes melitus (OR 1.893, 95%CI1.471-8.432;P=0.003) and AHI ≥15 times/h (OR 3.106, 95%CI 1.583-12.571; P<0.001) were the independent risk factors for SBI in elderly population. Conclusions The incidence of OSAS w as higher in the elderly population aged over 60. The incidence of SBI in patients w ith OSAS w as significantly higher than that in patients w ith non-OSAS, and w ith the aggravation of OSAS, it show ed an increasing trend. Moderate to severe OSAS w as an independent risk factor for SBI in elderly population.

The protein binding of non-steroidal anti-inflammatory drugs flurbiprofen,ketoprofen and etodolac with human serum albumin (HSA) was investigated using indirect chiral high performance liquid chromatography (HPLC) and ultrafiltration techniques.S-(-)-2-(1-naphthyl)-ethylamine (S-NEA) was utilized as chiral derivatization reagent and pre-column derivatization RP-HPLC method was established for the separation and assay of the three pairs of enantiomer.The method had good linear relationship over the investigated concentration range without interference.The average extraction efficiency was higher than 85％ in different systems,and the intra-day and inter-day precisions were less than 15％.In serum albumin,the protein binding of etodolac enantiomers showed significant stereoselectivity that the affinity of S-enantiomer was stronger than R-enantiomer,and the stereoselectivity ratio reached 6.06; Flurbiprofen had only weak stereoselectivity in HSA,and ketoprofen had no stereoselectivity at all.Scatchard curves showed that all the three chiral drugs had two types of binding sites in HSA.

The protein binding of non-steroidal anti-inflammatory drugs flurbiprofen, ketoprofen and etodolac with human serum albumin （HSA） was investigated using indirect chiral high performance liquid chromatography （HPLC） and ultrafiltration techniques. S-（-）-1-（1-naphthyl）- ethylamine （S-NEA） was utilized as chiral derivatization reagent and pre-column derivatization RP-HPLC method was established for the separation and assay of the three pairs of enantiomer. The method had good linear relationship over the investigated concentration range without interference. The average extraction efficiency was higher than 85% in different systems, and the intra-day and inter-day precisions were less than 15%. In serum albumin, the protein binding of etodolac enantiomers showed significant stereoselectivity that the affinity of S-enantiomer was stronger than R-enantiomer, and the stereoselectivity ratio reached 6.06; Flurbiprofen had only weak stereoselectivity in HSA, and ketoprofen had no stereoselectivity at all. Scatchard curves showed that all the three chiral drugs had two types of binding sites in HSA.

Five hundred and nineteen patients with essential hypertension from 6 community health centers in Baoshan Distract of Shanghai were enrolled in the program,all patients received direct or indirect comprehensive interventions.These interventions were conducted by doctors from tertiary hospitals and community health serwice centers.Among these hyperpietic,462 patients were followed-up for 1 year.After interventions,the awareness rate of hypertension was significantly increased,unhealthy life styles were changed; blood pressure control rate and risk factors control rate were also increased; carotid-femoral artery pulse wave velocity and carotid-radial artery pulse wave velocity were decreased (P ＜ 0.01 or P ＜ 0.05).The results indicate that comprehensive interventions organized by tertiary hospitals with community health centers are effectivc in managcmcnt of hypcrtension.

Objective:To sort out the new requirements for the initial ethical review application materials put forward by the Measures for the Ethical Review of Life Science and Medical Research Involving Humans that issued in 2023, to explore the ethical considerations behind these new requirements, and to put forward feasible suggestions on the key details and practical operations that should be paid attention to in the preparation of various initial ethical review application materials, so as to provide a certain reference for researchers, ethical review committees and institutions to standardize and promote ethical review.Methods:Compared with the relevant provisions of the 2016 Measures for the Ethical Review of Biomedical Research Involving Humans, this paper discusses the frontier hotspots of ethical theory and the practice of ethical review.Results:The preparation of application materials for initial ethical review should be based on an accurate understanding of the Measures, emphasize compliance, and avoid formally implementing regulatory requirements and increasing unnecessary burdens.Conclusions:It is the responsibility of researchers to prepare high-quality ethical review application materials, but institutions and ethical review committees must provide corresponding support, including clarifying the latest requirements of policies and regulations, updating the standard operating procedures of ethical review of their institutions, and ensuring timely and continuous ethical training and ethics consultation for researchers. The standardization and improvement of ethical review work requires a more comprehensive perspective and systematic planning to strengthen the responsibility of all parties.