The minor purchasing process and mode of some hospital were introduced,and the implementation of the hospital's minor purchasing projects in the past year was analyzed.The causes for high failure rate of purchasing were pointed out including long interval between project creation and procurement,unreasonable demand presentation,insufficient demand demonstration and lack of active participation of suppliers.Some suggestions were put forward such as timely adjustment of demands,strengthening of demand demonstration,improvement of supplier motivation and enhancement of procurement process management,which were of great significance for increasing the success rate of minor purchasing of the hospital.[Chinese Medical Equipment Journal,2025,46(8):91-95]

The minor purchasing process and mode of some hospital were introduced,and the implementation of the hospital's minor purchasing projects in the past year was analyzed.The causes for high failure rate of purchasing were pointed out including long interval between project creation and procurement,unreasonable demand presentation,insufficient demand demonstration and lack of active participation of suppliers.Some suggestions were put forward such as timely adjustment of demands,strengthening of demand demonstration,improvement of supplier motivation and enhancement of procurement process management,which were of great significance for increasing the success rate of minor purchasing of the hospital.[Chinese Medical Equipment Journal,2025,46(8):91-95]

Patients with severe trauma require an extremely timely treatment and transfusion plays an irreplaceable role in the emergency treatment of such patients. An increasing number of evidence-based medicinal evidences and clinical practices suggest that patients with severe traumatic bleeding benefit from early transfusion of low-titer group O whole blood or hemostatic resuscitation with red blood cells, plasma and platelet of a balanced ratio. However, the current domestic mode of blood supply cannot fully meet the requirements of timely and effective blood transfusion for emergency treatment of patients with severe trauma in clinical practice. In order to solve the key problems in blood supply and blood transfusion strategies for emergency treatment of severe trauma, Branch of Clinical Transfusion Medicine of Chinese Medical Association, Group for Trauma Emergency Care and Multiple Injuries of Trauma Branch of Chinese Medical Association, Young Scholar Group of Disaster Medicine Branch of Chinese Medical Association organized domestic experts of blood transfusion medicine and trauma treatment to jointly formulate Chinese expert consensus on blood support mode and blood transfusion strategies for emergency treatment of severe trauma patients ( version 2024). Based on the evidence-based medical evidence and Delphi method of expert consultation and voting, 10 recommendations were put forward from two aspects of blood support mode and transfusion strategies, aiming to provide a reference for transfusion resuscitation in the emergency treatment of severe trauma and further improve the success rate of treatment of patients with severe trauma.

Objective To observe the value of feature pyramid network(FPN)for automatic segmentation and semantic feature classification of spontaneous intracerebral hemorrhage(sICH)hematoma showed on non-contrast CT.Methods Non-contrast CT images of 408 sICH patients in hospital A(training set)and 103 sICH patients in hospital B(validation set)were retrospectively analyzed.Deep learning(DL)segmentation model was constructed based on FPN to segment the hematoma region,and its efficacy was assessed using intersection over union(IoU),Dice similarity coefficient(DSC)and accuracy.Then DL classification model was established to identify the semantic features of sICH hematoma.Receiver operating characteristic curves were drawn,and the area under the curves(AUC)were calculated to evaluate the efficacy of DL classification model for recognizing semantic features of sICH hematoma.Results The IoU,DSC and accuracy of DL segmentation model for 95％sICH hematoma in training set was 0.84±0.07,0.91±0.04 and(88.78±8.04)％,respectively,which was 0.83±0.07,0.91±0.05 and(88.59±7.76)％in validation set,respectively.The AUC of DL classification model for recognizing irregular shape,uneven density,satellite sign,mixed sign and vortex sign of sICH hematoma were 0.946-0.993 and 0.714-0.833 in training set and validation set,respectively.Conclusions FPN could accurately,effectively and automatically segment hematoma of sICH,hence having high efficacy for identifying semantic features of sICH hematoma.

Aim To investigate the effect of p-hydroxybenzaldehyde ( HD) on intestinal fibrosis in mice based on mouse intestinal fibrosis model and in vitro EMT model,and to explore the underlying mechanism Methods HE staining, Masson staining, immunohisto-chemistry ,qPCR, Western blot and other experimental methods were used to verify the effect of HD on intestinal fibrosis in mice and the potential mechanism. Results In vivo experiments showed that compared with the normal group, the DSS-induced intestinal fibrosis model group had shortened colon, increased colon his-topathological score, increased collagen volume fraction, and significantly increased collagen I expression. After treatment with 4, 10, and 25 mg • kg

Objective To quantitatively evaluate the associations of PM
Air Pollutants/toxicity* ; Air Pollution/adverse effects* ; Child, Preschool ; China ; Dermatitis, Atopic/epidemiology* ; Female ; Humans ; Male ; Outpatients ; Particulate Matter/analysis*

Objective To evaluate the influence of temperature on the outpatient visits for urticaria in Lanzhou City and its hysteresis and to find out the sensitive populations by sex and age stratification.Methods We collected the urticaria outpatient data in three grade A class three hospitals as well as the meteorological data and air pollutant data in Lanzhou from January 2011 to December 2017.The distributed lag non-linear model(DLNM)was employed to analyze the influence of daily mean temperature on the outpatient visits for urticaria.Stratification analysis was performed for different age groups(0-14,15-59,≥60 years)and different sex populations.Results Temperature had a non-linear relationship with the outpatient visits for urticaria,and there existed hysteresis.During the research period,the average daily outpatient visits for urticaria at the three hospitals in Lanzhou was 25,ranging from 1 to 76.With the rise in the daily mean temperature within 0-10 ℃,the risk of outpatient visits for urticaria first increased and then decreased.When the daily mean temperature was 2 ℃,hysteresis occurred on the 18th day,and the relative risk(
Adolescent ; Air Pollutants/analysis* ; Child ; Child, Preschool ; China/epidemiology* ; Female ; Humans ; Infant ; Infant, Newborn ; Middle Aged ; Nonlinear Dynamics ; Outpatients ; Temperature ; Urticaria/epidemiology*

【Objective】 To explore the effect of bisoprolol on ICa，Lin volume overload combined with pressure overload heart failure in rabbits. 【Methods】 Totally 82 male New Zealand rabbits （2.5-3.0 kg） were randomly divided into three groups： SO （sham group）， HF （heart failure group）， and BF （heart failure with bisoprolol treatment group）. HF rabbits were duplicated by aortic valve insufficiency procedure combined with abdominal aorta constriction procedure. Real-time PCR and Western blot analysis were performed to detect the expression of ICa，L in left ventricular myocytes. Left ventricular myocytes were isolated； then the cell membrane capacitance， the current density， activation and inactivation of ICa，L were recorded by whole cell patch clamp. 【Results】 ① Bisoprolol could improve the heart function of heart failure rabbits according to the measurement of echocardiography and BNP. ② The expressions of ICa，L mRNA and protein decreased significantly in heart failing rabbits （P<0.01）， but remained unaltered after chronic bisoprolol treatment （P>0.05）. ③ Membrane capacitance was larger in heart failing groups than in sham group （P<0.01）. ICa，L current density decreased greatly in HF group （P<0.01）. Bisoprolol treatment could not change Cm or ICa，L density （P>0.05）. V1/2 of activation curve negative shift enlarged window currents in heart failure groups. Bisoprolol treatment caused window currents to decrease. 【Conclusion】 Bisoprolol could reverse the heart function of heart failure rabbits and also affect the function of ICa，L.

Objective: To investigate the proteins expression difference after upregulation of human CD99 in Hodgkin Lymphoma cell line, L428 cell, and verify the function of differential proteins. Methods: The differential proteins were detected by two-dimensional fluorescence difference gel electrophoresis and mass spectrometry analysis, cluster analysis was done by GOfact. Results: There were 38 proteins screened out, of which 21 proteins were positively associated with CD99, while 17 proteins were negative. Among the 38 proteins, 32 proteins participated in biological process, and 35 proteins were involved in the composition and construction. And 28 proteins participated in multifaceted biological activities including antioxidation, protein binding, catalytic activity, regulation of enzyme, signal transduction, molecular structure, regulation of translation and ion transport. Conclusions: The changes of the differential proteins, correlated with cytoskeleton, cell differentiation, signal pathway and regulating gene expression, are closely relevant to the translation between Hodgkin/Reed-Sternberg and B lymphocyte cell.
12E7 Antigen ; Cell Line, Tumor ; Hodgkin Disease ; Humans ; Proteomics ; Up-Regulation

Objective To establish a new dialysis washing method for human frozen platelets and to evaluate a new type of washing machine based on dialysis.Methods Twenty bags of platelets(1U)were divided into two groups:centrifugation group and dialysis group.The effect of the washing machine was evaluated by measuring platelet function in vitro.Results After the platelets were treated by the two methods, the recovery rate of dialysis group[(73.57 ± 12.49)%]was significantly better than that of centrifugal group[(62.21 ±7.07)%].The osmotic pressure of dialysis group was 305.8 ±5.27mOsm/kg, compared to 383.2 ±22.00 mOsm/kg in centrifugation group.There was significant differences in the recovery rate and osmotic pressure(P<0.05), but there was no significant difference between dialysis group and centrifugation group in the mean platelet volume[(9.44 ±0.93)vs(9.23 ±0.50)fl], ADP-induced aggregation rate[(20.7 ±8.00)%vs(27.7 ±11.83)%],thrombin-induced platelet aggregation rate[(84.1 ±7.88)%vs(92.9 ±5.28)%], hypotonic shock responses[(19.02 ±4.42)% vs(23.19 ±9.08)%], CD62p activation rate [(16.00 ±9.40)%vs(21.86 ±8.14)%]or apoptosis rate[(46.31 ±10.28)% vs(54.59 ±16.76)%](P>0.05). Conclusion Compared to centrifugation group,the frozen platelet washing machine can not only improve platelet recovery,but also solve the problem of excessive DMSO residues.