Objective To investigate interventions of vitamin E( VE) on indomethacin-induced gastric mucosal injury. Methods Fifty mice were randomly divided into 5 groups. Normal control group was administrated with saline, others were intragastrically administrated with indomethacin ( 20 mg · kg-1 ) . After 4 hours, mice were intragastrically treated with saline, cimetidine(200 mg·kg-1),VE(25,50 mg·kg-1) once a day for 5 consecutive days. By the end of the treatment,gastric mucosa injury index,serum superoxide dismutase(SOD) activity,and malondialdehyde(MDA) content were determined. ResultsGastric mucosal injury indexs of mice treated with cimetidine,VE at low and high doses were significantly lower than that of the model control and higher than that of the normal control(P<0. 01). VE at high doses showed significantly less mucosal injury than that of the cimetidine group(P<0. 05). Healing-rate of gastric mucosal injury in cimetidine group,VE low-dose and high-dose groups were significantly higher than that of model control group(P<0. 01). SOD activity of VE at low and high doses was significantly lower than that of the model control and cimetidine groups(P<0. 05). The results also revealed that cimetidine and two doses of VE significantly elevated SOD activity and lowered the level of MDA(P<0. 05, 0. 01). Conclusion VE can obviously promote the healing of gastric mucosal injury,especially at high dose,which is better than cimetidine,while,the low dose is comparable with cimetidine.

We provide laboratory for students to design and complete experiment independently,and examine their operation ability in course of experiment.After accomplishing their experiments,the students must write a disquisition on it.Through this exploration experimentation,we have trained students scientific analysis ability and innovation ability and make them benefit form it in their future study and work.

Objective To study the effects of matrine (MAT) on the apoptosis and the expression of PEG10 in human hepatocarcinoma cell line HepG2. Methods MTT assay was used to determine the proliferation-inhibition activity by MAT to HepG2 cell. JC-1 staining was prepared to detect the change of mitochondrial membrane potential in HepG2 cells after MAT was given. RT-PCR and immunocytochemical method for detecting the PEG10 gene and protein expression levels were used. Results MAT could inhibit the HepG2 cell proliferation above the concentration of 0.125 mg/mL (different from above-->MAT ≥ 0.1 g/L) and in a concentration-dependent and time-dependent manner(P<0.01). JC-1 staining and flow cytometry detection showed that MAT can significantly decrease the mitochondrial membrane potential of HepG2 cells (P < 0.01). The RT-PCR and immunocytochemical staining results showed that 0.5 and 2.0 mg/ml (different from Chinese) MAT could reduce PEG10 gene and protein expression obviously. Conclusion MAT could decrease the expression level of PEG10 gene and inhibited cell proliferation,change the mitochondrial membrane potential and induce HepG2 cell apoptosis.

Objective:To sum up nursing experience of a multi-drug resistant patient with upper gastrointestinal hemorrhage who underwent Lateral skull base.Methods:One patient with multi-drug resistant was admitted to our hospital in October, 2019. To observe and prevent the postoperative complications of lateral skull base and to prevent the rupture bleeding of carotid artery. The early detection and treatment the symptoms of upper gastrointestinal bleeding is effective and necessary. Intervention for patient receiving nutrition therapy is promoted.Results:By giving psychological care to improve patient compliance. The patient had no postoperative complications of lateral skull base, and the bleeding symptoms of upper gastrointestinal hemorrhage was controlled in time.Conclusion:The patient was discharged from the hospital with a tracheal tube in a stable condition.

The high-pass filter which is designed to overcome the polarization voltage in the ECG measurements can affect the measurement of the ST-segment; but the accuracy of the ST-segment wil have an impact on the diagnosis and treatment of heart diseases. This paper used the ECG detection platform to test the effect of the high-pass filter at different frequency and studied the effect of the high-pass filter on the ST segment to ensure proper use of different application modes.

Objective:To understand the willingness and cognition of nurses in Guangzhou and Foshan to "Internet + Nursing Service", and analyze the relevant factors that affect nurses' willingness so as to provide a reference for the formulation of related policies.Methods:From June to August 2019, convenience sampling was used to selected 625 nurses from 8 hospitals in 2 Class Ⅱ hospitals and 2 Class Ⅲ hospitals in Guangzhou and Foshan respectively as research subjects. All nurses were investigated with the self-designed Nurses' Willingness to "Internet + Nursing Service" Questionnaire. A total of 625 questionnaires were issued and 612 valid questionnaires were returned.Results:Among 612 nurses, only 31.21% (191/612) nurses were willing to carry out "Internet + Nursing Service"; 56.70% (347/612) nurses took a neutral attitude; 78.76% (482/312) nurses were willing to develop "Internet + Nursing Service" with the biggest motivation of increase in economic income. The biggest concern of 90.03% (551/612) nurses was their practice risk and personal safety. Univariate analysis showed that there were statistically significant differences in the willingness of nurses of different ages and working hours to develop "Internet + Nursing Service" (χ 2=11.04, 26.27; P<0.01) . Conclusions:Most nurses take a wait-and-see attitude towards "Internet + Nursing Service". We should improve relevant laws and regulations for nurses as soon as possible to protect the rights and safety of nurses, and attract junior nurses to carry out "Internet + Nursing Service" in a targeted manner.

Objective To explore the effect of a phased rehabilitation training programme to relieve shoulder dys-function in patients after neck dissection and to provide effective solutions for postoperative shoulder joint function recov-ery of patients.Methods This study has been reviewed and approved by the Ethics Committee,and informed consent has been obtained from patients.A phased rehabilitaiton training programme for the shoulder after neck dessection was developed through literature review and discussion,and 70 eligible patients from Hospital of Stomatology,Sun Yat-sen University from December 2020 to April 2021 were selected and randomly divided into the test group and control group(35 patients in each group).The control group underwent motor rehabilitation training from 6 weeks postoperative to 1 year after surgery,such as shoulder mobility and coordination training and small range of motion training of the neck,while the test group took part in a rehabilitation training program that included familiarization maneuver training,protective rehabilitation,exercise rehabilitation,and resistance training in the following four stages:preoperative,postop-erative general anesthesia and awake until the removal of stitches,the removal of stitches until 6 weeks after surgery,and 6 weeks after surgery until 1 year after surgery.The frequency of training in both groups was at least 3 days per week,and the length of each training session was 10-15 min.The intensity of exercise was 2-3 points on the Borg Conscious Ex-ercise Intensity Scale(i.e.,mild-to-moderate tachypnea or fatigue).The neck dissection injury index(NDII)was used to evaluate the quality of life related to shoulder joint function at four time points:preoperative,postoperative 3 months,postoperative 6 months,and postoperative 12 months.The higher the score,the better the quality of life.Results 28 cases in the test group and 32 cases in the control group completed a one-year follow-up.At 3 and 6 months postopera-tive,the NDII of the test group was significantly higher than that of the control group[3 months postoperative:test group(93.48±9.36)vs.control group(80.00±11.34)(P＜0.001),6 months postoperative:test group(98.21±4.76)vs.control group(90.70±9.12)(P＜0.001)];12 months after surgery,the NDII of the test group(97.23±4.88)was still higher than that of the control group(96.33±4.49),but the difference was not statistically significant(P=0.458).The difference in NDII scores among subjects at 3,6,and 12 months after surgery was statistically significant in each group(P＜0.001).Conclusion The application of the phased rehabilitation training method in neck dissection patients has a feasibility and could improve the quality of life of patients'shoulder joint function within 6 months after surgery.

The high-pass filter which is designed to overcome the polarization voltage in the ECG measurements can affect the measurement of the ST-segment; but the accuracy of the ST-segment will have an impact on the diagnosis and treatment of heart diseases. This paper used the ECG detection platform to test the effect of the high-pass filter at different frequency and studied the effect of the high-pass filter on the ST segment to ensure proper use of different application modes.
Electrocardiography ; instrumentation ; methods ; Filtration