BACKGROUND: Poor mental health status of nursing students can affect their learning and living. OBJECTIVE: To explore mental health status of nursing students at different studying stages.DESIGN: Grouping stratified sampling survey on the basis of nursing students studying in higherschool.SETTING: Nursing Department of the Fourth Military Medical University of Chinese PLA, Laboratory Center of Basic Faulty, and Department of Rehabilitative Physioltherapy of Xijing Hospital.PARTICIPANTS: Totally 515 nursing students at different studying stages of three educational levels (the technical secondary school level, junior college level and undergraduate level) were observed with grouping stratified sampling in December 2004.METHODS: Symptom checklist-90(SCL-90) was used for survey. SCL-90 contained 90 items, being interpreted in the context of nine symptom dimensions, including somatization, obsessive-compulsive, interpersonal sensitivity, depression, anxiety, hostility, phobic anxiety, paranoid ideation, and psychoticism. Each item was scored from grade Ⅰ to grade Ⅴ (symptomless, mild, moderate, little severe, and severe). Scores of total items and 9 symptoms were recorded. The more the scores of total items were, the lower the total level of mental health was; the more the scores of any symptom was, the severer the symptom of mental health was. Data were analyzed with t test. MAIN OUTCOME MEASURES: Scores of total items and 9 symptoms. RESULTS: Totally 515 nursing students were randomly selected in this survey except 5 students because of uncompleted survey, and the response rate was 99.0%. There were 501 qualified questionnaires, which were accounted for 98.2%. Mental health status of nursing students at various stages was different: the score of nursing students in grade 1 and 3 was higher than that in grade 2 in technical secondary school; the score of nursing students was the highest in grade 2 in junior college; and the score of nursing students was the highest in grade 3 at undergraduate level. The order of SCL-90 scores was obsessive-compulsive, interpersonal sensitivity and depression from high to low.CONCLUSION: SCL-90 scores of nursing students are high in grade 1and grade 3 at the technical secondary school level and also in middle grade at junior college level and undergraduate level. The main mental psychological symptoms are obsessive-compulsive, interpersonal sensitivity and depression. Psychological predisposition of nursing students should be cultured according to different psychological characteristics at various learning stages.

BACKGROUND: In vitro culture condition and culture efficiency are different in reported umbilical cord-derived mesenchymal stem cells, and lacked of unified standards. Different derived mesenchymal stem cells have different biological properties. Therefore, it is very necessary to establish a simple and high-performance culture system for umbilical cord-derived mesenchymal stem cells. OBJECTIVE: To observe the growth state of human umbilical cord-derived mesenchymal stem cells in different culture systems in vitro and adenovirus infection efficiency. METHODS: Mesenchymal stem cells were separated from healthy full-termed delivery fetus using collagenase digestion method and purified by adherent culture. These cells were cultured and amplified in DMEM (low glucose), MesenPRO RS~(TM) Medium and STEMPRO~(R) MSC SFM in vitro. The 3-5 passage mesenchymal stem cells were infected by the Ad5-EGFP, Ad5/11-EGFP, Ad5/35-EGFP as multiplicity of infection (MOI)=1, 10, 100. Viral infection and green fluorescence expression were observed at post-infection 24, 56 and 72 hours using inverted fluorescence microscope. RESULTS AND CONCLUSION: The cell morphology in STEMPR~(R) MSC SFM was different from other two culture system and these cells were not easy to adherent after trypsin digestion. Cell doubling time in the MesenPRO RS~(TM) Medium was shorter than other two groups. Mesenchymal stem cells were infected by Ad5/35-EGFP with higher efficiency than other two kinds of adenovirus, but part of cells appeared apoptosis. The infection efficiency of Ad5/11-EGFP was highest. The fluorescence intensity was gradually increased with increased MOI.

Objective:To explore relationship between serum 25-hydroxy vitamin D ( 25OHD ) level and ketosis-prone in patients with newly-diagnosed type 2 diabetes mellitus(T2DM).Methods:One hundred and thirty-four patients with newly diagnosed T2DM (103 males, 31 females) admitted in The Third Affiliated Hospital, Southern Medical University from January 2017 to January 2019 were enrolled into this study, including 36 patients with ketosis-prone (KPDM group) and 98 patients without ketosis(NKPDM group). Clinical characteristics, including height, weight, and history of hypertensive disease were collected. Serum 25OHD levels, lipid profile, islet function and glycosylated hemoglobin (HbA 1C)levels, ICA, IAA, GAD-Ab, etc., were measured. Results:Among the 134 patients, the patients with vitamin D deficiency, insufficiency, and sufficiency were 71 cases(52.99%), 52 cases(38.81%), and 11 cases(8.20%), respectively. KPDM group had significantly lower serum 25OHD level than NKPDM group[(44.12±9.77) nmol/L vs (55.35±15.31) nmol/L, P<0.01]. The rate of vitamin D deficiency was significantly higher in KPDM group compared to that in NKPDM group [(77.78% vs 43.88%), P<0.01]. The prevalence of KPDM varied significantly in different vitamin D status groups( P<0.01). Logistic regression analysis suggested that low serum 25OHD, younger age, high HbA 1C, and triglyceride were risk factors to ketosis-prone in newly diagnosed T2DM( P<0.01). Conclusion:Vitamin D deficiency is a common problem in newly diagnosed T2DM, especially in KPDM. Low serum 25OHD level seems to be an independent risk factor for ketosis-prone in patients with newly diagnosed T2DM.

Objective:To extract the early result of postoperative echocardiographic evaluation in patients underwent left ventricular assist device (LVAD) implantation, and to assess the efficacy of surgical treatment for end-staged heart failure.Methods:Between June 2019 and May 2023, the patients underwent left ventricular assist device implantation were enrolled in this study. Demographic baseline characteristics and perioperative echocardiographic parameters were collected and analyzed.Results:A total of 28 patients were included in the study. After LVAD implantation, the heart sizes of the patients obviously reduced and the left heart contractibility function improved. The right ventricular contractibility remained stable. The proportion of the patients with moderate to severe mitral regurgitation was significantly reduced, but patients with mild to moderate aortic insufficiency increased. No serious complications such as death, pericardial tamponade and thrombosis events were observed during the follow-up period.Conclusion:LVAD implantation improved the left cardiac function, while the right cardiac function remained stable. However, it should be paid attention that the aortic valve function was impaired after the surgery. Generally, the early results of LVAD implantation for the treatment of end-stage heart failure were satisfactory.