Objective:To investigate the clinical value of a fully autonomous ultrasound robot in splenic ultrasound imaging.Methods:A retrospective study was conducted by enrolling 56 adult volunteers from the Third Medical Center of the Chinese PLA General Hospital between February 1-8，2024 as research subjects.A senior physician sequentially performed splenic ultrasound examinations using both the fully autonomous ultrasound robot and a matched portable ultrasound device. The acquired images were randomly coded and scored via a double-blind method by 3 physicians. The differences of the image quality scores and high-quality image proportions between the two groups were compared. Examination durations were recorded and compared between the two groups.Results:Both modalities successfully acquired splenic images in all 56 volunteers. No statistically significant differences were observed in image quality scores among the 3 physicians：（3.52 ± 1.31）points vs.（3.83 ± 1.23）points，（2.77 ± 1.23）points vs.（3.17 ± 1.17）points，and（3.48 ± 0.97）points vs.（3.79 ± 0.94）points（all P>0.05）. The numbers of images scoring ≥ 3 points showed no significant differences：45（80.36%） vs. 50（89.29%），30（53.57%） vs. 38（67.86%），and 48（85.71%） vs. 52（92.86%）（all P>0.05）. The fully autonomous ultrasound robot required significantly longer examination time［（60.86 ± 50.55）s vs.（7.95 ± 4.35）s， t=6.88， P＜0.01］. Conclusions:The fully autonomous ultrasound robot demonstrates comparable image quality and clinically acceptable image proportions to conventional portable ultrasound in splenic examinations. These findings suggest its potential equivalence to operator-dependent ultrasound for splenic imaging，supporting its feasibility as an alternative ultrasound modality despite longer procedural duration.

Objective:To investigate the clinical value of a fully autonomous ultrasound robot in splenic ultrasound imaging.Methods:A retrospective study was conducted by enrolling 56 adult volunteers from the Third Medical Center of the Chinese PLA General Hospital between February 1-8，2024 as research subjects.A senior physician sequentially performed splenic ultrasound examinations using both the fully autonomous ultrasound robot and a matched portable ultrasound device. The acquired images were randomly coded and scored via a double-blind method by 3 physicians. The differences of the image quality scores and high-quality image proportions between the two groups were compared. Examination durations were recorded and compared between the two groups.Results:Both modalities successfully acquired splenic images in all 56 volunteers. No statistically significant differences were observed in image quality scores among the 3 physicians：（3.52 ± 1.31）points vs.（3.83 ± 1.23）points，（2.77 ± 1.23）points vs.（3.17 ± 1.17）points，and（3.48 ± 0.97）points vs.（3.79 ± 0.94）points（all P>0.05）. The numbers of images scoring ≥ 3 points showed no significant differences：45（80.36%） vs. 50（89.29%），30（53.57%） vs. 38（67.86%），and 48（85.71%） vs. 52（92.86%）（all P>0.05）. The fully autonomous ultrasound robot required significantly longer examination time［（60.86 ± 50.55）s vs.（7.95 ± 4.35）s， t=6.88， P＜0.01］. Conclusions:The fully autonomous ultrasound robot demonstrates comparable image quality and clinically acceptable image proportions to conventional portable ultrasound in splenic examinations. These findings suggest its potential equivalence to operator-dependent ultrasound for splenic imaging，supporting its feasibility as an alternative ultrasound modality despite longer procedural duration.

Objective:To investigate the effect of failure mode and effect analysis (FMEA) based catheter information platform in preventing catheter-related bloodstream infection (CRBSI) in intensive care unit to improve the current status of CRBSI.Methods:In this study, a retrospective cohort study was conducted using the purposive sampling method, and 140 patients with indwelling central venous catheters admitted to the ICU of Peking University Shenzhen Hospital from August to December 2021 were set as the control group; the 140 patients with indwelling central venous catheters admitted to the ICU from January to May 2022 were set as the observation group. The control group used electronic forms to record and manage at the bedside after CRBSI cluster nursing measures were given, and the observation group used the catheter information platform based on FMEA to conduct information management on catheter evaluation and maintenance process after CRBSI cluster nursing measures were given. Compared the implementation rate (6 items), implementation time, qualification rate, and incidence of CRBSI in ICU patients between two groups of ICU nurses.Results:The implementation rate of CRBSI cluster nursing measures among ICU nurses in the observation group: strict hand hygiene by nurses was 87%(122/140), maximum aseptic barrier during puncture was 97%(136/140), aseptic operation during catheter maintenance was 91%(128/140), 75% alcohol disinfection of connectors was 84%(118/140), 24-hour change of infusion lines was 95%(133/140), and timely change of patches/dressings was 89%(125/140), they were greater than those in the control group 70%(98/140), 87%(122/140), 71%(100/140), 61%(86/140), 71%(99/140), 69%(96/140), the differences were statistically significant ( χ2 values were 9.67 to 29.07, all P<0.05); the execution time and qualification rate among ICU nurses in the observation group were (9.11 ± 2.83) minutes and 91.4% (128/140), the control group were (10.00 ± 2.84) minutes and 60.7% (85/140), with statistically significant differences ( t value was -2.64, χ2 values was 36.28, all P<0.05). Conclusions:The FMEA-based catheterization information platform can help enhance the efficiency of the implementation of CRBSI clustering nursing measures by ICU nurses, improve the quality of care, and thus reduce the occurrence of CRBSI, and the feasibility of clinical promotion is high.

Objective:To preliminarily investigate the effect of circIGF2BP3 on autophagy in photoaged dermal fibroblasts.Methods:Human dermal fibroblasts were isolated from circumcised foreskin tissues from 6 children in the Department of Urological Surgery, Third Affiliated Hospital of Sun Yat-sen University. An ultraviolet A (UVA) -induced photoaged human dermal fibroblast model (UVA radiation group) was established by repeated UVA radiation at a dose of 10 J/cm 2 for 14 consecutive days, and human dermal fibroblasts receiving no treatment served as control group. The photoaged cell model was verified by β-galactosidase staining, Western blot analysis for determining P21 protein expression, and cell counting kit-8 (CCK8) assay for evaluating cell viability. Moreover, Western blot analysis was performed to determine the protein expression of autophagy-related proteins P62, microtubule-associated protein 1 light chain 3 (LC3) -Ⅰand LC3-Ⅱ in photoaged human dermal fibroblasts, and real-time quantitative RCR (qRT-PCR) to verify the differential expression of circIGF2BP3 between photoaged and normal human dermal fibroblasts. Furthermore, circIGF2BP3 was biologically annotated. Some cultured primary human dermal fibroblasts were divided into 4 groups: empty vector group transfected with an empty vector, UVA + empty vector group transfected with an empty vector followed by repeated UVA radiation, circIGF2BP3 group transfected with a circIGF2BP3-overexpressing lentiviral vector, UVA + circIGF2BP3 group transfected with a circIGF2BP3-overexpressing lentiviral vector followed by repeated UVA radiation. Western blot analysis was performed to determine the expression of autophagy-related proteins. Statistical analysis was carried out by using t test, one-way analysis of variance and least significant difference- t test. Results:Compared with the control group, the UVA radiation group showed significantly increased proportions of β-galactosidase-positive cells (61.33% ± 5.78% vs. 6.37% ± 0.32%, t = 9.49, P < 0.01) and P21 expression (1.25 ± 0.03 vs. 1.00 ± 0.05, t = 4.26, P < 0.05), but significantly decreased cell viability (74.33% ± 3.48% vs. 100%, t = 7.38, P < 0.01). Moreover, the P62 expression and LC3-Ⅱ/Ⅰ ratio were significantly higher in the UVA radiation group than in the control group (both P < 0.05). The relative expression of circIGF2BP3 was 0.72 ± 0.04 in the photoaged human dermal fibroblasts, which was significantly lower than that in the normal human dermal fibroblasts (1.00 ± 0.03, t = 5.46, P < 0.01). The P62 expression and LC3-Ⅱ/Ⅰ ratio were significantly lower in the circIGF2BP3 group (0.60 ± 0.01, 0.71 ± 0.01, respectively) than in the empty vector group (1.00 ± 0.02, 1.00 ± 0.01, t = 16.25, 2.75, P < 0.01, < 0.05, respectively), and lower in the UVA + circIGF2BP3 group (1.05 ± 0.02, 2.04 ± 0.05, respectively) than in the UVA + empty vector group (1.31 ± 0.02, 2.72 ± 0.14, t = 10.493, 6.472, respectively, both P < 0.01) . Conclusion:circIGF2BP3 can regulate autophagy in UVA-induced photoaged dermal fibroblasts, which provides a new potential therapeutic target for the prevention and treatment of skin photoaging.

Drug metabolism and pharmacokinetics (DMPK) is an important branch of pharmaceutical sciences. The nature of ADME (absorption, distribution, metabolism, excretion) and PK (pharmacokinetics) inquiries during drug discovery and development has evolved in recent years from being largely descriptive to seeking a more quantitative and mechanistic understanding of the fate of drug candidates in biological systems. Tremendous progress has been made in the past decade, not only in the characterization of physiochemical properties of drugs that influence their ADME, target organ exposure, and toxicity, but also in the identification of design principles that can minimize drug-drug interaction (DDI) potentials and reduce the attritions. The importance of membrane transporters in drug disposition, efficacy, and safety, as well as the interplay with metabolic processes, has been increasingly recognized. Dramatic increases in investments on new modalities beyond traditional small and large molecule drugs, such as peptides, oligonucleotides, and antibody-drug conjugates, necessitated further innovations in bioanalytical and experimental tools for the characterization of their ADME properties. In this review, we highlight some of the most notable advances in the last decade, and provide future perspectives on potential major breakthroughs and innovations in the translation of DMPK science in various stages of drug discovery and development.

Objective:To explore the effect of continuous pumping normal saline at same infusion speed before flushing or sealing the tube on the hemodynamics of patients with hypovolemic shock receiving norepinephrine.Methods:A total of 56 cases of hypovolemic shock patients receiving norepinephrine via micro-pump were randomly assigned to the observation group and the control group (28 cases in each group). Patients in the control group received conventional operation method to flush or seal the tube, while patients in the observation group continued pumping normal saline at the same infusion speed, followed by flushing or sealing the tube based on the control group. The changes of hemodynamics after flushing or sealing the tube was compared between two groups.Results:After 30 s, 1 min, 2 min, 3 min, 5 min of flush or seal the tube, the systolic blood pressure were (105.4±17.4) mmHg, (106.3±21.3) mmHg, (102.1±14.5) mmHg, (100.6±16.9) mmHg, (101.0±14.3) mmHg (1 mmHg=0.133 kPa), mean arterial blood pressure were (81.1±8.6) mmHg, (82.4±9.9) mmHg, (78.6±7.3) mmHg, (76.9±6.7) mmHg, (75.7±6.5) mmHg in the observation group, lower than those in the control group [(150.6±26.7) mmHg, (151.8±30.1) mmHg, (139.7±29.8) mmHg, (125.3±25.3) mmHg, (114.4±21.6) mmHg and (107.4±11.6) mmHg, (106.1±11.5) mmHg, (98.1±11.1) mmHg, (88.9±9.6) mmHg, (79.5±8.0) mmHg], the differences were statically significant ( P<0.05). After 30 s, 1 min, 2 min, 3 min of flush or seal the tube, the diastolic blood pressure were (69.0±10.50)mmHg, (70.5±10.7)mmHg, (66.9±8.3)mmHg, (65.1±6.2)mmHg in the observation group, lower than those in the control group [(85.9±11.6) mmHg, (83.3±8.7) mmHg, (77.3±7.4)mmHg, (70.7±7.2) mmHg], the differences were statically significant ( t value was 10.199-18.464, P<0.05). Conclusions:Before flushing or sealing the tube, continue pumping normal saline at same infusion speed can reduce the risk of abnormal hemodynamics for the hypovolemic shock patients receiving norepinephrine via micro-pump.

Objective:To explore the current situation of clinical nurses' disaster nursing ability and its influencing factors, and to provide basis for carrying out clinical nurses' disaster nursing education and training.Methods:By convenient sampling method, 322 clinical nurses from Peking University Shenzhen Hospital in September 2020 were selected. The disaster nursing ability assessment tool and general information questionnaire were used to conduct a questionnaire survey to analyze the current situation of clinical nurses' disaster nursing ability and its main influencing factors.Results:The total score of disaster nursing ability of clinical nurses was (199.07±34.31) points, which was at the middle and lower level; the scores of each dimension from high to low were as follows: disaster preparedness score was (72.94±12.89) points, coping ability score was (80.00±13.82) points, disaster reduction/prevention capability score was (28.19±6.09) points, recovery/reconstruction ability score was (17.94±3.27) points. Regression analysis showed that the highest degree, clinical department, whether they have autonomously studied disaster nursing related courses after work, and whether they have participated in disaster rescue after work were the main influencing factors of clinical nurses' disaster nursing ability ( t values were -4.715-5.508, P<0.05). Conclusions:The overall level of disaster nursing ability of clinical nurses is at the middle and lower level. It should be combined with clinical nurses' work department, whether clinical nurses have disaster rescue experience and whether they have independently studied disaster nursing related courses, and targeted disaster nursing related training should be carried out to improve their disaster nursing knowledge and skill.

Objective To investigate the effects of cryptotanshinone and tanshinone Ⅱ A,two major monomer components of tanshinone,on the proliferation,differentiation and lipid synthesis of rat meibomian gland epithelial cells in vitro.Methods The eyelid meibomian gland tissue was isolated from 2-month-old SD rats and co-cultured with 3T3 trophoblasts for 5 days.Cryptotanshinone and tanshinone Ⅱ A were prepared with DMSO into different concentrations.The cells were grouped to 0.125 μmol/L,0.250 μmol/L,0.500 μmol/L,1.250 μmol/L and 2.500 μmol/L drug groups and treated for 48 hours,respectively.Only dimethyl sulfoxide (DMSO) was added in medium in the DMSO control group.The expressions of keratin 14 (K14) and p63 in frozen sections of meibomian gland tissue and clones of meibomian gland cells were detected by immunofluorescence.Real-time fluorescence quantitative PCR was used to assay the relative expression of K16,cell proliferation related antigen 67 (Ki67) and CCAAT enhancer binding protein α (C/EBPcα) in meibomian gland cell clones.Crystal violet staining and oil red staining were used to evaluate the colony formation rate and lipid synthesis of meibomian gland epithelial cells.Results Primary cultured meibomian gland cells were cloned on day 4-5 in vivo,and the cloning area was increased on day 7 after culture,p63 and K14 were positively expressed in clones.Compared with the DMSO control group,the relative expression levels of Ki67 mRNA were significantly elevated in the 0.500 μmol/L,1.250 μmol/L and 2.500 μmol/L cryptotanshinone groups (all at P ＜ 0.05).The relative expressions of Ki67 mRNA in the 0.500 μmol/L and 1.250 μmol/L tanshinone Ⅱ A groups were significantly higher than those in the DMSO control group (all at P＜0.05).No significant difference was found in the relative expression of K16 and C/EBPα mRNA among different concentrations of cryptotanshinone or tanshinone Ⅱ A group (all at P＞0.05).No lipid drop was found in the tarsal gland cell clones;however,the accumulation of lipid was seen in the cell clusters at the margin of the clones by oil red O staining.The average clone formation rate of tarsal gland cells in the 1.250 μ mol/L cryptotanshinone group was (2.55±0.20)％,which was significantly higher than (2.05±0.13)％ in the DMSO control group (t =4.379,P＜0.05).The average clone formation rate of tarsal gland cells in the 1.250 μmol/L tanshinone Ⅱ A group was (2.25±0.20)％,there was no significant difference between 1.250 μmol/L tanshinone Ⅱ A group and DMSO control group (t=1.616,P＞0.05).Conclusions Cryptotanshinone and tanshinone Ⅱ A promote the proliferation of meibomian gland epithelia cells,but play less impacts to lipid synthesis of meibomian gland epithelia cells in vitro.cryptotanshinone promote the clone tormation of meibomian gland epithelia cells.

Objective: To investigate the value of fibrinogen to albumin ratio (FAR) at admission on predicting spontaneous recanalization of infarct-related artery (IRA) in patients with acute ST-segment elevation myocardial infarction (STEMI). Methods: Clinical data from 255 acute STEMI patients ((61.1±11.2) years old, 189 males) who underwent emergency coronary angiography within 12 hours in our hospital from December 2015 to April 2018 were retrospectively analyzed. The acute STEMI patients were divided into non-spontaneous recanalization group (thrombolysis in myocardial infarction (TIMI) flow grade 0-1, 203 cases) and spontaneous recanalization group (TIMI flow grade 2-3, 52 cases). Multivariate logistic regression analysis was used to evaluate related factors of IRA spontaneous recanalization. The receiver operating characteristic (ROC) curve was used to evaluate the value of FAR in predicting spontaneous coronary recanalization. Results: There was no significant difference in age,gender, hypertension, diabetes, smoking,systolic blood pressure,diastolic blood pressure,heart rate, duration of chest pain, type of infarction, infarct-related artery, door-to-balloon time, and drug used before admission between non-spontaneous recanalization group and spontaneous recanalization group (all P>0.05). The FAR and high-sensitivity C-reactive protein levels were significantly lower in the spontaneous recanalization group than in the non-spontaneous recanalization group (8.20±1.85 vs. 11.02±2.75, P<0.001; (6.87±3.36) g/L vs. (8.51±3.72) g/L, P=0.004). Multivariate logistic regression analysis showed that FAR (OR=0.492, 95%CI 0.354-0.686, P<0.001), serum uric acid (OR=0.994, 95%CI 0.989-0.999, P=0.018) and high-sensitivity C-reactive protein (OR=0.774, 95%CI 0.614-0.975, P=0.030) were independent negative correlation with spontaneous recanalization of infarct-related artery in patients with acute STEMI. The ROC curve showed that the area under the curve of FAR predicting spontaneous recanalization of infarct-related artery in patients with acute STEMI was 0.807 (95%CI 0.630-0.758, P<0.001), and the diagnostic threshold was 9.26, the sensitivity was 76.9%, the specificity was 75.9%. Conclusion The level of admission FAR has certain predictive value for spontaneous recanalization of infarct-related arteries in patients with acute STEMI.

Objective To compare the accuracy of electroencephalography (EEG) grading scale with amplitude-integrated electroencephalography (aEEG) in predicting poor outcomes (3-month), who sustained coma after cardiopulmonary resuscitation (CPR) in adults. Methods A retrospective study was conducted. The patients with post-anoxic coma admitted to intensive care unit (ICU) of Tongren Hospital, Capital Medical University from March 2010 to June 2017 were enrolled. EEG was registered and recorded at least once within 7 days of coma after CPR, while not being subjected to therapeutic hypothermia. General data, Glasgow coma scale (GCS), EEG grading and aEEG model were collected. According to Glasgow prognosis score (GOS) of 3-month outcome, patients were divided into poor prognosis group (GOS 1-2) and good prognosis group (GOS 3-5), and the differences of related indexes between the two groups were compared. The predictive ability of aEEG model and EEG grading for brain function prognosis was evaluated by receiver operating characteristic (ROC) curve. Results Fifty-four patients were included, with 31 males and 23 females, and age of (53.9±19.3) years. Among the EEG Young grades, 17 cases (31.5%) were grade 1, 4 cases (7.4%) were grade 2-5, and 33 cases (61.1%) were grade 6. Among the aEEG model grades, 26 cases (48.1%) had slow wave pattern grade 1, 23 cases (42.6%) had suppressed mode grade 4, 4 cases (7.4%) had status epilepticus mode grade 2, and 1 case (1.9%) had burst suppression mode grade 3. Thirty-six patients had poor prognosis 3-month after onset, 26 of them died and 10 had persistent vegetative state. The prognosis was good in 18 cases, including 16 cases with severe neurological disability and 2 cases with moderate neurological disability. There was no significant difference in gender, age, anoxic time between two groups with different prognosis, while the degree of consciousness disorder in poor prognosis group was more severe than that in good prognosis group (GCS score: 4.1±1.7 vs. 5.0±2.1, P < 0.05). The consistency test showed that different physicians had good consistency in EEG grading and aEEG model (Kappa values were 0.917 and 0.932, respectively). It was shown by ROC curve analysis that the area under ROC curve (AUC) of aEEG model and EEG grading for predicting poor prognosis of coma patients after CPR were 0.815 and 0.720, respectively (both P < 0.01); when the cut-off value of aEEG was 2.5, the sensitivity was 79.3%, the specificity was 77.4%, the positive likelihood ratios (PLR) was 3.508, and the negative likelihood ratios (NLR) was 0.267; when the cut-off value of EEG grading was 4.5, the sensitivity was 82.8%, the specificity was 61.3%, the PLR was 2.140, and NLR was 0.281. Conclusions aEEG model was more accurate in prognosticating poor outcomes (3-month) in patients with post-anoxic coma, when compared to EEG grading. Its operation was simple, so aEEG is very suitable in ICU.