OBJECTIVE To determine the category of gene cassettes in type 1 integrons of multi-resistant Acinetobacter baumannii from Shenyang.METHODS Fifty clinical isolates were collected from the First Affiliated Hospital of China Medical University and K-B test was used to determine the susceptibility and the results were read based on Clinical and Laboratory Standards Institute(CLSI) of the USA.PCR was used to detect the existance of integron,and DNA sequencing was also required.RESULTS There are thirty-two isolates positive for integron.Sequencing analysis showed the integrons carried two different known genes(arr-3 and aacA4).CONCLUSIONS The results show the potential risk of integron dissemination among different strains of A.baumannii.

Objective To investigate the age distribution of serum prostate-specific antigen (PSA) in middle-aged and aged people in Beijing. Methods From November 2006 to November 2008, the data of men, who visited Beijing Hospital for routine health examination and received a measurement of serum PSA level, were collected and analyzed retrospectively. The eligible men were classified into various age groups over 10-years interval, and the PSA distributions were analyzed in the groups. Results A total of 11557 men were enrolled in this study. Within the entire cohort, the median PSA level was 0. 89 μg/L. The median PSA levels in each age group were as follows: 0. 79 μg/L in 40-49 yrs age group, 0.85 μg/L in 50-59 yrs age group, 1.20 μg/L in 60-69 yrs age group,1.44 μg/L in 70-79 yrs age group and 1.52 μg/L in more than 80 yrs age group. The serum PSA level gradually increased along with age. A rapid increase of PSA level began from 60 yrs age. The percentile of men with PSA ＞4 μg/L were 1.3%, 2.6%, 8.8%, 15.4% and 14.4% according to age category. Conclusions The PSA level is positively correlated with age in middle-aged and aged people in Beijing. Especially from 60 years of age, the percentile of men with abnormal PSA increases dramatically. Our results can guide clinicians to understand the population-based distribution of serum PSA and to screen prostate cancer.

OBJECTIVETo verify the pharmacological hypothesis of prescriptions by studying the targeted distribution of major components in stewed rhubarb in the rat model with acute pancreatitis (AP).

METHODNormal SD rats (control group, n = 5) and the AP model induced with intraperitoneal cerulein (model group, n = 5) were taken as the experimental objects. Rats of the two groups were orally administered with stewed rhubarb granules (20 g x kg(-1)). Their heart, liver, spleen, lung, kidney and pancreas were collected two hours after the administration. Such constituents as emodin, chrysophanol, physcion, rhein and aloe-emodin and their concentrations in each tissue homogenate were detected by high performance liquid chromatography-mass-mass.

RESULTAloe-emodin and physcion in stewed rhubarb whose concentrations in liver and kidney of normal rats were higher than that in pancreatic tissues, while the distribution spectrums and concentrations of the remaining components in pancreatic tissues had no significant difference with that of other organs. The concentrations of emodin, aloe-emodin, rhein and chrysophanol in stewed rhubarb in pancreatic tissues of the AP model group were higher than that in other tissues and organs, while their concentrations in pancreatic, renal and splenic tissues were notably higher than that in the normal group.

CONCLUSIONIn the conditions of AP, effective components in stewed rhubarb show a targeted distribution feature in pancreas, which provides experimental basis for the pharmacological hypothesis of prescriptions.

Acute Disease ; Animals ; Anthraquinones ; pharmacokinetics ; pharmacology ; therapeutic use ; Disease Models, Animal ; Drugs, Chinese Herbal ; pharmacokinetics ; pharmacology ; therapeutic use ; Male ; Organ Specificity ; Pancreatitis ; drug therapy ; metabolism ; Rats ; Rats, Sprague-Dawley ; Rheum ; chemistry

BACKGROUND:The peri-implant bone absorption is closely related to the repair effect. OBJECTIVE:To compare the effects of three kinds of dental implant systems on the peri-implant bone absorption. METHODS:116 patients who underwent the dental implant systems were col ected, including 46 cases with 3I implant system, 40 cases with ITI implant system and 30 cases with BLB implant system. The peri-implant bone absorption, sulcus bleeding index and periodontal probing depth of three groups were detected at 1, 3, 6, 9 and 12 months after implantation, respectively. RESULTS AND CONCLUSION:The peri-implant bone absorption of three groups within 1 year after implantation was in a rise, and the bone absorption of BLB group was significantly higher than that of ITI and 3I groups at 3 and 12 months after implantation (P<0.05). Compared with the natural teeth, the gingival sulcus bleeding index of three groups were al increased at different time points after implantation;the gingival sulcus bleeding index of BLB group was significantly higher than that of natural teeth at 6 months after implantation (P<0.05);the gingival sulcus bleeding index of three groups were significantly higher than that of natural teeth at 9 months after implantation (P<0.05). The periodontal probing depth of three groups showed an ascending trend at 6 months after implantation;the periodontal probing depth of three groups was higher than that of natural teeth at different time points after implantation, which exhibited significant differences at 6 and 9 months after implantation (P<0.05). In conclusion, three kinds of dental implant systems exhibit differet effects on the peri-implant bone absorption, but al achieve excel ent clinical efficacies.

Objective To study serum level of prostate specific antigen (PSA) by age and its relationship with positive prostatic biopsy.Methods A total of 8818 adults who underwent PSA scanning at Health Chek-up Center of Beijing Hospital during July 2009 and July 2010 were retrospectively studied,40 of whom performed prostatic biopsy.Linear regression was used to assess the relation of PSA with age,while Chi-square test was used to compare positive prostatic biopsy in different PSA groups.Results Serum PSA of more than 4 μg/L was more commonly seen in the elderly group (40 ～ year-old group 1.4％,50 ～ yearold group 1.9％,60 ～ year-old group 9.2％,70 ～ year-old group 15.5％,80 year-old group 17％ ; P ＜0.001 ; RR =0.196).In those whose PSA was ＞ 20 μg/L,6 (83.3 ％) were found to have positive prostatic biopsy; and the figure was 10 (50.0％) or 24 (24.0％) when PSA was ＜4 μg/L or 4-10 μg/L group (P =0.048).Conclusions Age was positively correlated with PSA,although no linear correlation was confirmed.Higher serum PSA level (＞ 4 μg/L) may be more common in elderly people and those with a positive prostatic biopsy.

Objective To explore the exercise risk of urban residents aged18 to 65 years old.MethodsHealth screening and cardiovascular risk stratification were performed among adults18 to 65 years old in 2010by using exercise risk assessmentrecommendedbyAmerican College of Sports Medicine.Result A total of15 498 subjects were recruited 9293 males and 6205 females,mean age (44.8 ±11.1) years,8929(57.6％ ) in the lower risk group,5323(34.3％ ) in the moderate risk group,and 1246(8.1％ ) in the higher risk group.The proportion of those in the higher risk group was increased with age.Conclusion Risk assessment and Physical Activity Readiness Questionnaires should be used before physical activity programme is initiated,especially in middle aged or elderly people.

Objective To evaluate the effects of assisted reproduction technology ( ART) on gestational weight gain ( GWG) and glucose metabolism .Methods The study was performed in ART women with single-ton and full-term delivery .Age-and pre-pregnancy body mass index matched healthy women with spontaneous pregnancy, singleton, and full-term delivery were recruited as controls .Maternal characteristics (height, age, education level , pre-pregnancy body mass , pre-delivery body mass , medical history , history of abortion , fasting plasma glucose , triglyceride , total cholesterol , and glucose tolerance ) and fetal data ( delivery mode , gender , birth body mass , birth body length ) were collected by a trained nutritionist .Results A total of 200 women were recruited into this study (53 ART women and 147 controls).There was no significant difference in number of previous abortion ( the ratio between the women who had ≥3 abortions to those who had <3 abortions was 6∶47 in the ART group , and 10∶137 in the control group , χ2 =1.080 , P=0.299 ) .Compared with the control group, the ART group had higher education level (33 in the ART and 85 in the control group with un-dergraduate or higher education , 20 in the ART group and 62 in the control group with a college degree or lower education ,χ2 =6.303 , P=0.012 ) .There were no statistically significantly differences between the ART and the control groups in pre-pregnancy body mass index [ (22.00 ±3.05 ) kg/m2 vs.(21.81 ±2.62 ) kg/m2 , P=0.661] and average GWG [ (13.89 ±5.33) kg vs.(14.78 ±4.60) kg, P=0.247].GWG was appro-priate in 22 ART women, excess in 18, and inadequate in 13;in the control group, GWG was appropriate in 66 women, excess in 54, and inadequate in 27.The distribution of GWG showed no significant difference be-tween the two groups (χ2 =1.162 , P=0.247 ) .Oral glucose tolerance test in 24-28 gestational weeks showed no significant difference in fasting blood glucose between the ART and the control groups [ (4.66 ±0.39) mmol/L vs.(4.66 ±0.52) mmol/L, P=0.996], but 1-hour and 2-hour blood glucose levels were significantly in-creased in the ART women [ ( 7.87 ±1.83 ) mmol/L vs.( 7.31 ±1.51 ) mmol/L, P=0.034; ( 7.49 ± 1.29) mmol/L vs.(6.69 ±1.30) mmol/L, P=0.029].The overall prevalence of gestational diabetes melli-tus was 13.5%(27/200), with no significant difference between the ART and the control groups (18.9%vs. 11.6%, P=0.182 ) .Conclusion ART may not affect GWG , but it may cause changes of glucose metabo-lism during pregnancy .

Objective: To assess the risk of public health emergencies in Zhejiang Province, March 2021. Methods: An expert counsel was conducted to assess the risk of coronavirus disease 2019 ( COVID-19 ) , enteritis due to norovirus, chicken pox and influenza by professionals in Zhejiang CDC, based on the information from infectious disease and public health emergency surveillance in Zhejiang Province, domestic health administrative departments, World Health Organization, and European CDC. Results: In March 2021, the risk of imported COVID-19 epidemic will be high in Zhejiang Province, and the possibility of local spread could not be ruled out. The possibility of a large-scale outbreak of enteritis due to norovirus and a small-scale outbreak of chickenpox in schools and kindergartens could not be ruled out after the new term begins. An increased risk of influenza epidemic is predicted in collective units such as schools and kindergartens, yet the risk of a large-scale one will be low. Conclusion High attention should be paid to COVID-19 and enteritis due to norovirus, and general attention should be paid to chicken pox and influenza outbreak.

OBJECTIVETo study the protective effect of carbon monoxide (CO) inhalation on the serious limb ischemia/reperfusion (I/R) injury, and which effects caused to shock in rats.

METHODS36 SD rats were randomly divided into I/R, I/R + CO (RC), sham operation (S) groups. I/R injury models were made by the occlusion of the femoral artery for 8 h and the reperfusion for 12 h, 10 d. Before reperfusion of 2 h, RC group started to breathe medical air containing CO (the volume fraction of CO: 0.075%) continuously, until after reperfusion for 4 h, a total of inhalation 6 h. S, I/R groups exposed to air, breathe freely. Caudal artery pressures (CAP), ten days survival rate, serum lactate dehydrogenase (LDH) and creatine kinase (CK) activity, limb wet - to - dry weight ratio (W/D) and the pathologic changes of limb were observed.

RESULTSOnce the reperfusion started, the CAP decreased rapidly in I/R group, and the mean reduced to(5.3259 +/- 0.3832) kPa when reperfusion for 8 h. Compared to I/R group, the CAP decreased slower and smaller in RC group, moreover, its mean reduced to (8.3300 +/- 0.4224) kPa when reperfusion for 8 h. The 10 d survival rate in I/R group was that 8 rats died all between reperfusion for 13 - 20 h. Only 1 rat died in RC group and the other 7 rats were still alive when reperfusion for 10 d. Compared to I/R group, the pathological features of the ischemic limb were significant ly improved, and the figures of W/D, serum LDH and CK value were remarkable lower in RC group (P < 0.05).

CONCLUSIONInhaling exogenous low-dose CO has a reverse regulation in the blood pressure decline caused by serious limb I/R injury in rats. And at the same time, it can effectively prevent the occurrence of shock, reduce physical damage, significantly increase the survival rate of animals.

Administration, Inhalation ; Animals ; Carbon Monoxide ; administration & dosage ; pharmacology ; Creatine Kinase ; blood ; Extremities ; blood supply ; L-Lactate Dehydrogenase ; blood ; Male ; Random Allocation ; Rats ; Rats, Sprague-Dawley ; Reperfusion Injury ; physiopathology ; prevention & control ; Shock ; etiology ; prevention & control

Objective To assess the efficiency of an iontophoresis-based screening method (EZSCAN) in the detection of impaired glucose tolerance (IGT),diabetes mellitus (DM) and metabolic syndrome (MS).Methods A total of 166 subjects without medical history of dysglycaemia underwent fasting plasma glucose (FPG) and HbA1c measurement and oral glucose tolerance test (OGTT) by using traditional or EZSCAN method.Variance analysis (GLM),SNK analysis,logistic regression analysis,and ROC analysis were used to evaluate the diagnostic value of those screening techniques.Results DM,IGT,normal glucose tolerance (NGT) +MS,and NGT were found in 4,26,25 or 111 participants,respectively.For traditional test,FPG of 7.0 mmol/L showed a lower sensitivity to detect DM (0%).The sensitivity of EZSCAN to detect DM,IGT or MS was 50%,77% and 64%,respectively.Conclusions FPG may have lower sensitivity to detect DM,although EZSCAN could show higher sensitivity to detect IGT,DM,and MS.