Objective:To explore the teaching effectiveness of curriculum ideological and political teaching model for Fundamentals of Nursing based on outcome based education concept.Methods:Using the convenient sampling method, a total of 194 undergraduates of grade 2019 from School of Nursing at University of South China were selected as the control group from February to December 2021, and 146 undergraduates from 2020 were selected as the experimental group from February to December 2022. The control group was taught in accordance with the conventional teaching methods, and the experimental group was taught in the ideological and political teaching model of Fundamentals of Nursing based on outcome based education concept. After the intervention, the total course scores of nursing undergraduates in the two groups were compared, and the cognitive attitude, implementation effect and teaching satisfaction of the experimental group students on "ideological and political curriculum" were compared.Results:After the intervention, the total course score of nursing undergraduates in the experimental group was (85.65±7.31), and that in the control group was (77.71±7.28), and the difference between the two groups was statistically significant ( P<0.01). The cognitive attitude score of undergraduate nursing students in the experimental group towards "ideological and political curriculum" was (32.62±2.15), and the implementation effect score of "ideological and political curriculum" was (22.78±1.78). The satisfactory form of ideological and political cases for undergraduate nursing students in the experimental group was news reports and hot events, and the satisfactory ideological and political teaching method was experiential teaching method and case-based teaching method. Conclusions:The curriculum ideological and political teaching model of Fundamentals of Nursing based on outcome based education concept can improve the academic performance of nursing undergraduate students and provide reference for the construction of ideological and political teaching courses in nursing basic courses. In the future, this teaching model can be applied to the teaching reform of other nursing courses in order to accelerate the progress of ideological and political construction of professional courses.

Plastics are widely used in daily life. Due to poor management and disposal, about 80% of plastic wastes were buried in landfills and eventually became land and ocean waste, causing serious environmental pollution. Recycling plastics is a desirable approach, but not applicable for most of the plastic waste. Microbial degradation offers an environmentally friendly way to degrade the plastic wastes, and this review summarizes the potential microbes, enzymes, and the underpinning mechanisms for degrading six most commonly used plastics including polyethylene terephthalate, polyethylene, polyvinyl chloride, polypropylene, polystyrene and polyurethane. The challenges and future perspectives on microbial degradation of plastics were proposed.
Biodegradation, Environmental ; Plastics ; Polyurethanes ; Recycling

Objective: To evaluate the effect of biofeedback training on bowl function among rectal cancer patients with chemoradiotherapy and temporary enterostomy. Methods: Using randomized controlled trial design, 109 rectal cancer patients were randomly divided into three groups, the first blank control group, the second group pelvic floor muscle exercise group, the third group biofeedback group. High resolution anorectal manometry was used for 6 longitudinal traces in 16 months. Data of bowel function were collected by Memorial Sloan Kettering Cancer Center (MSKCC) Bowel Function Instrument. Results: The main effect of the change of five indicators, anal resting pressure, rectal resting pressure, maximum squeeze pressure, maximum squeeze time and high pressure zone, was time. The other four indicators, rectal volume at first senory, rectal volume at sense of convenience, maximal tolerable rectal volume and rectal compliance, among patients of biofeedback group were (32.71±5.00) ml, (74.26±8.30) ml, (188.40±12.68) ml, (5.69±1.18) ml/kPa and (68.09±6.38). The rectal volume at first senory, rectal volume at sense of convenience, maximal tolerable rectal volume and rectal compliance, among patients of biofeedback group were significant higher than blank control group and pelvic floor muscle exercise group (F=3.589-26.826, P<0.05). Conclusion The biofeedback could significantly improve the sensory indicators of patients with middle and low rectal cancer. High-resolution anorectal manometry could effectively evaluate the effect of biofeedback training in patients with middle and low rectal cancer.

Objective? To explore the effect of biofeedback exercise on the recovery of rectal function in patients with middle and low rectal cancer. Methods? From June 2015 to December 2016, 126 patients with low and middle rectal cancer who were going to undergo preoperative radiotherapy and chemotherapy, anterior rectal resection and preventive stoma were selected by purposive sampling. They were randomly divided into control group 1 (blank control group), control group 2 (pelvic floor muscle exercise group) and invention group (biofeedback exercise group) by random coding generated by SPSS software and were tracked longitudinally for 6 times in 16 months by high resolution anorectal manometry, 11 manometric indices including initial rectal sensory capacity and rectal fecal sensory capacity were measured. Results? The study was completed in 109 cases, including 38 cases in control group 1, 35 cases in control group 2, and 35 cases in invention group. The main effects of the changes of five indices, including anal resting pressure, rectal resting pressure, anal maximum systolic pressure, anal maximum systolic time and anal high pressure zone, were time (P＜ 0.05). The four indices of rectal initial capacity, rectal fecal sensory capacity, rectal maximum tolerance capacity and rectal compliance in the invention group were higher than those in the control group 1 (P＜0.05); the maximum rectal tolerance capacity and rectal compliance in the invention group were higher than those in the control group 2 (P＜ 0.05). Conclusions? The biofeedback exercise could significantly improve the sensory indicators of patients with middle and low rectal cancer and promote recovery.

Objective? To evaluate the effect of biofeedback on bowel function among rectal cancer patients with chemoradiotherapy and temporary enterostomy. Methods? This study was designed as a randomized controlled trial. The patients with low and middle rectal cancer in a Cancer Hospital of Guangzhou from June 2015 to December 2016 were randomly divided into pelvic floor muscle exercise group (control group, n=36) and biofeedback training group (intervention group, n=35). The intestinal function questionnaire of the Chinese version of Memorial Sloan-Kettering Cancer Cente(r MSKCC) was used to longitudinally track and compare the intestinal function of the two groups for 16 months and 5 times in total. Results? The total score of MSKCC, frequency and urgency of defecation and defecation sensory disturbance in intervention group were higher than those in control group at 4 days and 3 months after stoma inclusion operation, and the differences were statistically significant (P＜ 0.05). Conclusions? Biofeedback training can improve the intestinal function of patients with middle and low rectal cancer, promote their recovery, and prevent intestinal and anal dysfunction of patients with middle and low rectal cancer.

Objective To explore the serum expression of DKK1 protein, a Wnt signaling pathway inhibitor in patients with non-small cell lung cancer (NSCLC) and its relationship with osseous metastasis. Methods Serum DKK1 protein levels were assayed by enzyme-linked immunosorbent assay (ELISA) in NSCLC patients, including 33 NSCLC patients with osseous metastasis and 41 NSCLC patients without respectively, and 32 healthy volunteers were served as the control group. Furthermore, the differential expression of the serum DKK1 protein level between the patients and the volunteers was compared by using the variance analysis and the independent sample t test. The correlation between DKK1 expression and bone metastasis was detected by Pearson correlation analysis. Results Serum DKK1 protein level of NSCLC patients was (79.6±8.3) ng/ml, which was significantly higher than that in healthy volunteers [(21.5±6.4) ng/ml, t=13.17, P=0.001]. The serum DKK1 level in osseous metastasis group was (110.3±11.4) ng/ml, which was significantly higher than that in non-skeletal metastasis group [(60.7±10.5) ng/ml, t=14.128, P=0.003]. The positive association was observed between the DKK1 level in the peripheral blood and osseous metastasis in NSCLC patients (r=0.855, P<0.001). Conclusion The serum expression level of DKK1 protein in NSCLC patients is closely related to the osseous metastasis, which may be a predicting biomarker for the osseous metastasis.

Objective To describe the current situation of pre-hospital delay and health belief in patients with colorectal cancer and explore the relationship between them. Methods With convenient sampling methods,totally 385 patients with colorectal cancer were recruited from January to June 2016. Patients with colorectal cancer were investigated using a general data survey questionnaire, visit situation questionnaire and the Champion Health Belief Model Scale. Results The median pre-hospital delay time was 3.00 months.The rate of pre-hospital delay was 43.1%(166/385). The score of the overall health belief was (119.52 ± 12.62) points. The two dimensions of"perceived susceptibility and perceived severity" scored lower, and the two dimensions of "health motivation and perceived therapeutic benefits" scored higher. The health belief was negatively correlated with the pre- hospital delay among colorectal cancer patients (r=- 0.737, P<0.01). Conclusions Pre-hospital delay occurred among patients with colorectal cancer is severe. Patients with a higher level of health belief have shorter pre-hospital delay.It′s important to improve the level of health belief of"perceived susceptibility and perceived severity"and reduce the time of pre-hospital delay to improve outcomes in patients with colorectal cancer.

Objective To analyze the prevention condition of skin tears of inpatients in level-III hospitals, so as to provide basis for making prevention strategies.Methods 14 level-III hospitals were involved in the cross-section survey. Within the same time period, using the same research tools, methods and procedure, 964 trained nurses inspected patients from head to toes, who were selected by convenience sampling, with hospital stay ≥24 h, with age≥18 years old, and with signature on the informed consent documents, and also investigated implementation of prevention measures. Results A total of 18 806 effective cases were obtained, with 238 locations of skin tears in 199 patients found. Incidence of hospital-acquired skin tears was 1. 06%. Implementation rate of risk assessment and nutrients and water supplement was 3. 92% and 10. 35%. Implementation rate of prevention of falling and falling down from bed was 51. 58% and 47. 20%. Usage of assistant tools and emollients accounted for 28. 23% and 2. 69%. Adopting suitable moving techniques and wearing long sleeves, trousers or long stockings accounted for 8.07% and 6.95%. Differences of incidence rate, risk assessment and implementation of prevention measures of skin tears among teaching hospitals, comprehensive hospitals and specialty hospitals were statistically meaningful ( P < 0. 05 for all ) . Conclusions Risk assessment and prevention of skin tears in these 14 level-III hospitals were not satisfactory. Prevention measures vary from different types of the hospitals. In future, nurses should be trained to strengthen awareness of risk assessment and prevention, and implementation rate and consistency of preventive measures should be improved.

Kv2.1 channel currents in pancreatic beta-cells are thought to contribute to action potential repolarization and thereby modulate insulin secretion. Because of its central role in this important physiological process, Kv2.1 channel is a promising target for the treatment of type 2 diabetes. Jingzhaotoxin-XI (JZTX-XI) is a novel peptide neurotoxin isolated from the venom of the spider Chilobrachys jingzhao. Two-microelectrode voltage clamp experiments had showed that the toxin inhibited Kv2.1 potassium currents expressed in Xenopus Laevis oocytes. In order to investigate the structure-function relationship of JZTX-XI, the natural toxin and a mutant of JZTX-XI in which Arg3 was replaced by Ala, were synthesized by solid-phase chemistry method with Fmoc-protected amino acids on the PS3 automated peptide synthesizer. Reverse-phase high performance liquid chromatography (RP-HPLC) and matrix assisted laser desorption/ ionization time-of-flight mass spectrometry (MALDI-TOF/TOF MS) were used to monitor the oxidative refolding process of synthetic linear peptides to find the optimal renaturation conditions of these toxins. The experiments also proved that the relative molecular masses of refolded peptides were in accordance with their theoretical molecular masses. RP-HPLC chromatogram of co-injected native and refolded JZTX-XI was a single peak. Under the whole-cell patch-clamp mode, JZTX-XI could completely inhibit hKv2.1 and hNav1.5 channels currents expressed in HEK293T cells with IC50 values of 95.8 nmol/L and 437.1 nmol/L respectively. The mutant R3A-JZTX-XI could also inhibit hKv2.1 and hNav1.5 channel currents expressed in HEK293T cells with IC50 values of 1.22 micromol/L and 1.96 micromol/L respectively. However, the prohibitive levels of R3A-JZTX-XI on hKv2.1 and hNav1.5 channels were reduced by about 12.7 times and 4.5 times respectively, indicating that Arg3 was a key amino acid residue relative to the hKv2.1 channel activity of JZTX-XI, but it is also an amino acid residue correlated with the binding activity of JZTX-XI to hNav1.5 channel. Our findings should be helpful to develop JZTX-XI into a molecular probe and drug candidate targeting to Kv2.1 potassium channel in the pancreas.
Animals ; HEK293 Cells ; Humans ; Insulin-Secreting Cells ; metabolism ; Mutant Proteins ; genetics ; pharmacology ; NAV1.5 Voltage-Gated Sodium Channel ; metabolism ; Neurotoxins ; chemical synthesis ; genetics ; pharmacology ; Protein Refolding ; Shab Potassium Channels ; antagonists & inhibitors ; metabolism ; Sodium Channel Blockers ; pharmacology ; Spider Venoms ; genetics ; pharmacology ; Transfection

OBJECTIVE:To determine the content of IL-2 in IL-2 targeting liposomes of 5-FURP. METHODS: The sample solution was stained by Coomassie brillant blue G-250 solution. Using blank liposome as blank,the absorbability of the IL-2 was determined by ultraviolet spectrophotometry at a wavelength of 595 nm;meanwhile its content was determined. RESULTS: The linear range of IL-2 was 1～100 ?g?ml-1(r=0.999 7) and the average recovery rate was 99.26% (RSD=0.59%,n=5). CONCLUSION: The method was proved to be simple,rapid,sensitive and reproducible,and it is applicable for the determination of IL-2 in liposome of 5-FURP.