AIM:To establish a physiological-based pharmacokinetic(PBPK)model of ertapen-em in elderly patients with chronic kidney disease,and to analyze the pharmacokinetic/pharmacody-namic index f％ T＞MIC at different doses.METH-ODS:The physicochemical properties and pharma-cokinetic characteristics of ertapenem were collect-ed by reviewing the literature and databases,and a healthy adult model was established in PKSim? software,and then extrapolated to the PBPK model of the elderly.The clinical pharmacokinetic re-search data were used to optimize and validate the model,and the mean folding error(MFE)was used as the index to evaluate the prediction perfor-mance of the model.The final model was used to simulate the in vivo exposure of elderly patients with chronic kidney disease after administration,and the pharmacokinetic/pharmacodynamic index of commonly used clinical dosing regimens was an-alyzed,and the recommended dosing regimens were given.RESULTS:The MFE of the area under the curve(AUC0-t),peak concentration(Cmax)and peak time(Tmmax)predicted by the established PBPK model of ertapenem in adults were 0.92,0.79 and 1.02,respectively,and the predicted value of the optimized PBPK model of ertapenem in the elderly was also consistent with the observed value of 0.5＜MFE＜2 standards,all of which have good predictive performance.With f％ T＞MIC greater than 40％as the drug efficacy target,the minimum inhibitory concentration(MIC)is 0.5-1 μg/mL for sensitive bacteria,and elderly patients with chronic kidney disease can consider reducing the drug dose as ap-propriate.CONCLUSION:The PBPK model of ertap-enem in elderly patients with renal insufficiency has been successfully established,and the model has good prediction performance and provides a reference for clinical personalized medication in el-derly patients with renal insufficiency.

Objective:To analyze the condition of subclinical atherosclerosis (SCA) in patients with psoriatic arthritis (PsA) and to provide a reference for better management of the associated cardiovascular risk in patients with PsA.Methods:Based on the cohort of PsA patients (PKUPsA) in the Department of Rheumatism and Immunology, Peking University First Hospital, 240 PsA patients without previous clinical atherosclerotic disease between July 2018 and June 2024 were included. The demographic data traditional cardiovascular disease risk factors, PsA related indicators and medications were collected when all patients were entered into the cohort. Increased intima-media thickness and/or arterial plaque formation in bilateral carotid arteries examined by ultrasonography are defined as the presence of SCA. Based on this, patients were divided into SCA and no SCA groups, and the two groups were compared and analyzed. Statistics were performed using the Mann-Whitney U test, independent sample t test, χ2 test and Logistic regression analysis. Results:Eighty-five of 240 patients (35.4%) had SCA, including 55 (22.9%) with cIMT thickening and 51 (21.2%) with carotid plaque. Compared with the PsA patients without SCA, patients with SCA were older [55.0 (42.0, 62.5) vs. 42.0(35.0, 53.0) year of age, Z=-4.90, P<0.001], had longer disease course of arthritis [4.6 (1.0, 10.1) vs. 3.0(1.0, 6.1) years, Z=-1.98, P=0.048], more patients with combined hypertension [34.1%(29/85) vs. 15.5%(24/155), χ2=11.08, P<0.001], hyperlipidemia [47.1%(40/85) vs. 27.1%(42/155), χ2=1.22, P=0.002] and the taking of statins [14.1%(12/85) vs. 5.8%(9/155), χ2=4.75 , P=0.029], hypoglycemic agents [10.6%(9/85) vs. 3.9%(6/155), χ2=4.23, P=0.040] and antihypertensive drugs [17.6%(15/85) vs 6.5%(10/155), χ2=7.37, P=0.007]. They also had a higher blood glucose level[5.37 (5.17, 6.09)mmol/L vs. 5.26(4.97, 5.67)mmol/L, Z=-2.82 , P=0.005], low-density lipoprotein [(3.05± 0.76)mmol/L vs. (2.78±0.75)mmol/L, t=2.60, P=0.010] and blood uric acid level[351 (312, 412)μmol/L vs. 333(279, 408)μmol/L, Z=-2.10, P=0.036]. Multivariate analysis showed that older [ OR (95% CI) =1.059 (1.033, 1.086), P<0.001], increased low density lipoprotein [ OR (95% CI) =1.519 (1.018, 2.267), P=0.041] and increased blood uric acid levels [ OR (95% CI)=1.004 (1.001, 1.007), P=0.017] were an independent risk of SCA in PsA patients. Conclusion:More than 1/3 of PsA patients with SCA without past history of clinical atherosclerosis with SCA, advanced age, increased blood low density lipoprotein level, and elevated uric acid level are independent risk factors for PsA with SCA, so attention should be paid to the assessment and management of cardiovascular-related risk. Early intervention can help to improve patient prognosis.

AIM:To establish a physiological-based pharmacokinetic(PBPK)model of ertapen-em in elderly patients with chronic kidney disease,and to analyze the pharmacokinetic/pharmacody-namic index f％ T＞MIC at different doses.METH-ODS:The physicochemical properties and pharma-cokinetic characteristics of ertapenem were collect-ed by reviewing the literature and databases,and a healthy adult model was established in PKSim? software,and then extrapolated to the PBPK model of the elderly.The clinical pharmacokinetic re-search data were used to optimize and validate the model,and the mean folding error(MFE)was used as the index to evaluate the prediction perfor-mance of the model.The final model was used to simulate the in vivo exposure of elderly patients with chronic kidney disease after administration,and the pharmacokinetic/pharmacodynamic index of commonly used clinical dosing regimens was an-alyzed,and the recommended dosing regimens were given.RESULTS:The MFE of the area under the curve(AUC0-t),peak concentration(Cmax)and peak time(Tmmax)predicted by the established PBPK model of ertapenem in adults were 0.92,0.79 and 1.02,respectively,and the predicted value of the optimized PBPK model of ertapenem in the elderly was also consistent with the observed value of 0.5＜MFE＜2 standards,all of which have good predictive performance.With f％ T＞MIC greater than 40％as the drug efficacy target,the minimum inhibitory concentration(MIC)is 0.5-1 μg/mL for sensitive bacteria,and elderly patients with chronic kidney disease can consider reducing the drug dose as ap-propriate.CONCLUSION:The PBPK model of ertap-enem in elderly patients with renal insufficiency has been successfully established,and the model has good prediction performance and provides a reference for clinical personalized medication in el-derly patients with renal insufficiency.

Objective:To analyze the condition of subclinical atherosclerosis (SCA) in patients with psoriatic arthritis (PsA) and to provide a reference for better management of the associated cardiovascular risk in patients with PsA.Methods:Based on the cohort of PsA patients (PKUPsA) in the Department of Rheumatism and Immunology, Peking University First Hospital, 240 PsA patients without previous clinical atherosclerotic disease between July 2018 and June 2024 were included. The demographic data traditional cardiovascular disease risk factors, PsA related indicators and medications were collected when all patients were entered into the cohort. Increased intima-media thickness and/or arterial plaque formation in bilateral carotid arteries examined by ultrasonography are defined as the presence of SCA. Based on this, patients were divided into SCA and no SCA groups, and the two groups were compared and analyzed. Statistics were performed using the Mann-Whitney U test, independent sample t test, χ2 test and Logistic regression analysis. Results:Eighty-five of 240 patients (35.4%) had SCA, including 55 (22.9%) with cIMT thickening and 51 (21.2%) with carotid plaque. Compared with the PsA patients without SCA, patients with SCA were older [55.0 (42.0, 62.5) vs. 42.0(35.0, 53.0) year of age, Z=-4.90, P<0.001], had longer disease course of arthritis [4.6 (1.0, 10.1) vs. 3.0(1.0, 6.1) years, Z=-1.98, P=0.048], more patients with combined hypertension [34.1%(29/85) vs. 15.5%(24/155), χ2=11.08, P<0.001], hyperlipidemia [47.1%(40/85) vs. 27.1%(42/155), χ2=1.22, P=0.002] and the taking of statins [14.1%(12/85) vs. 5.8%(9/155), χ2=4.75 , P=0.029], hypoglycemic agents [10.6%(9/85) vs. 3.9%(6/155), χ2=4.23, P=0.040] and antihypertensive drugs [17.6%(15/85) vs 6.5%(10/155), χ2=7.37, P=0.007]. They also had a higher blood glucose level[5.37 (5.17, 6.09)mmol/L vs. 5.26(4.97, 5.67)mmol/L, Z=-2.82 , P=0.005], low-density lipoprotein [(3.05± 0.76)mmol/L vs. (2.78±0.75)mmol/L, t=2.60, P=0.010] and blood uric acid level[351 (312, 412)μmol/L vs. 333(279, 408)μmol/L, Z=-2.10, P=0.036]. Multivariate analysis showed that older [ OR (95% CI) =1.059 (1.033, 1.086), P<0.001], increased low density lipoprotein [ OR (95% CI) =1.519 (1.018, 2.267), P=0.041] and increased blood uric acid levels [ OR (95% CI)=1.004 (1.001, 1.007), P=0.017] were an independent risk of SCA in PsA patients. Conclusion:More than 1/3 of PsA patients with SCA without past history of clinical atherosclerosis with SCA, advanced age, increased blood low density lipoprotein level, and elevated uric acid level are independent risk factors for PsA with SCA, so attention should be paid to the assessment and management of cardiovascular-related risk. Early intervention can help to improve patient prognosis.

The key words, social network and author cooperation network in papers ( published in 2003-2014 ) on reform in domestic public hospitals were analyzed using Ucinet and CiteSpace visual softwares with CNKI as the data source.The current situation in reform in domestic public hospitals was revealed by mining its research hotspots, progress and author cooperation .Some suggestions were put forward for strengthening the reform in domestic public hospitals .

Social network analysis has been a study hot spot in academic circle in recent years and is applied in several fields.After a brief description of its basic theories and study methods, its application in domestic medical and health field were analyzed with its key study hot spots summarized and its problems pointed out, in order to provide the methods that can learned in domestic medical and health studies.

The functional framework of information management system for regional medical and health institutions was established according to the 5 application systems (public health, medical service, medical support, drug supply support and general management ) and the target to develop 2 databases ( a resident electronic health records data-base and a resident electronic medical records database ) and an operational network put forward in the overall framework of health information construction during The National Twelfth-5 Year Plan Period, based on the functional position of health institutions at different levels.The difficulties to realize the target of the national 3521 project and its prospects were pointed out.

Mobile service in libraries of domestic medical colleges and universities was investigated.The specific characteristics of specialized courses offered in medical colleges and universities, the special nature of medical sub-jects, and the unique features of medical library users were described with suggestions put forward for expanding the mobile service in libraries of domestic medical colleges and universities.