The cultivation of top innovative nursing talents with Chinese characteristics in the new era lends critical support to the accomplishment of the strategic goal of the Healthy China Initiative.Herein,we reviewed the historical development of nursing science in China,clarified the conceptual framework of nursing science with Chinese characteristics in the new era,and identified the essential qualities and competencies required for top innovative nursing talents.Furthermore,we analyzed the mission and challenges in cultivating these nursing talents,and put forward new approaches,including formulating new ethics and political education theories specific to nursing science with Chinese characteristics,establishing a cross-disciplinary educational model of Nursing+X,and creating a new nursing talent cultivation ecosystem adapted to the era of human-machine symbiosis.This study provides theoretical insights into the cultivation of top innovative nursing talents who align their development well with national strategic needs,embody patriotism,and possess a strong sense of contemporary responsibility.

Objective:To carry out carrier screening among people of childbearing age, detect the pathogenic genes of monogenic genetic diseases and analyze the carrier status of pathogenic variants, so as to provide fertility guidance and intervention measures for high-risk families.Methods:From August 2022 to August 2023, 1 533 families of childbearing age who met the criteria were recruited in the Chinese PLA General Hospital, including a total of 3 044 subjects. According to the standard enrollment procedure, 223 genes (197 autosomal recessive genes and 26 X-linked genes) of the subjects were tested. According to the screening results, genetic counseling and fertility guidance were provided to the subjects. Invasive prenatal diagnosis was performed for high-risk couples (both couples being carriers of the same autosomal recessive disease gene or the woman was a carrier of X-linked disease gene), and their pregnancy pattern, outcome and offspring phenotype were followed up.Results:(1) A total of 3 044 cases from 1 511 couples and women of childbearing age from 22 families were included for carrier screening. Totally 1 503 families chose simultaneous screening and 30 families chose sequential screening out of the 1 533 families. Among the 3 044 subjects, 1 603 individuals carried at least one pathogenic or likely pathogenic variant, and the overall carrier rate was 52.66% (1 603/3 044). A total of 2 292 pathogenic or likely pathogenic variants were detected, and 0.75 variants (2 292/3 044) were detected per capita. (2) The three genes with the highest carrier rates were GJB2 (8.67%, 264/3 044), CYP21A2 (3.19%, 97/3 044) and PAH (3.09%, 94/3 044). There were 32 genes with a carrier rate ≥1/200, 17 genes with a carrier rate ≥1/100, and 7 genes with a carrier rate ≥1/50. (3) Thirty-eight high-risk families were identified. After excluding G6PD gene mutation, there were 33 high-risk families, of which 25 couples were carriers of the same autosomal recessive gene, 9 women were carriers of X-linked gene, and 1 family was double high-risk couple with both autosomal recessive and X-linked gene. After further excluding the GJB2 c.109G>A mutation, 21 high-risk families were identified. Preimplantation genetic testing for monogenic disease was performed in 12 families after genetic counseling. Prenatal diagnosis was completed in 4 out of 5 high-risk families who conceived naturally. Two fetuses carried the parental variants and terminated the pregnancy, one fetus did not carry the parental variants but was induced due to trisomy 21 syndrome, and one fetus was a carrier of congenital disorders of glycosylation type 1a.Conclusions:Carrier screening effectively identifies high-risk genetic disease families and provides reproductive guidance to prevent the birth of affected children. However, establishing multidisciplinary team is essential for managing complex cases. Implementation should prioritize prenatal institutions with genetic counseling or diagnostic expertise for monogenic disorders or established referral networks.

Objective:To carry out carrier screening among people of childbearing age, detect the pathogenic genes of monogenic genetic diseases and analyze the carrier status of pathogenic variants, so as to provide fertility guidance and intervention measures for high-risk families.Methods:From August 2022 to August 2023, 1 533 families of childbearing age who met the criteria were recruited in the Chinese PLA General Hospital, including a total of 3 044 subjects. According to the standard enrollment procedure, 223 genes (197 autosomal recessive genes and 26 X-linked genes) of the subjects were tested. According to the screening results, genetic counseling and fertility guidance were provided to the subjects. Invasive prenatal diagnosis was performed for high-risk couples (both couples being carriers of the same autosomal recessive disease gene or the woman was a carrier of X-linked disease gene), and their pregnancy pattern, outcome and offspring phenotype were followed up.Results:(1) A total of 3 044 cases from 1 511 couples and women of childbearing age from 22 families were included for carrier screening. Totally 1 503 families chose simultaneous screening and 30 families chose sequential screening out of the 1 533 families. Among the 3 044 subjects, 1 603 individuals carried at least one pathogenic or likely pathogenic variant, and the overall carrier rate was 52.66% (1 603/3 044). A total of 2 292 pathogenic or likely pathogenic variants were detected, and 0.75 variants (2 292/3 044) were detected per capita. (2) The three genes with the highest carrier rates were GJB2 (8.67%, 264/3 044), CYP21A2 (3.19%, 97/3 044) and PAH (3.09%, 94/3 044). There were 32 genes with a carrier rate ≥1/200, 17 genes with a carrier rate ≥1/100, and 7 genes with a carrier rate ≥1/50. (3) Thirty-eight high-risk families were identified. After excluding G6PD gene mutation, there were 33 high-risk families, of which 25 couples were carriers of the same autosomal recessive gene, 9 women were carriers of X-linked gene, and 1 family was double high-risk couple with both autosomal recessive and X-linked gene. After further excluding the GJB2 c.109G>A mutation, 21 high-risk families were identified. Preimplantation genetic testing for monogenic disease was performed in 12 families after genetic counseling. Prenatal diagnosis was completed in 4 out of 5 high-risk families who conceived naturally. Two fetuses carried the parental variants and terminated the pregnancy, one fetus did not carry the parental variants but was induced due to trisomy 21 syndrome, and one fetus was a carrier of congenital disorders of glycosylation type 1a.Conclusions:Carrier screening effectively identifies high-risk genetic disease families and provides reproductive guidance to prevent the birth of affected children. However, establishing multidisciplinary team is essential for managing complex cases. Implementation should prioritize prenatal institutions with genetic counseling or diagnostic expertise for monogenic disorders or established referral networks.

ObjectiveTo establish a method based on specific polymerase chain reaction （PCR） that can accurately and rapidly identify Astragalus membranaceus var. mongholicus （AMM） seeds and A. membranaceus （AM） seeds. MethodThe Chloroplast Genome Information Resource （CGIR） and IdenDSS were used to obtain the characteristic DNA fragments of AMM and AM， and the specific single nucleotide polymorphism （SNP） sites of AMM and AM were screened out， on the basis of which the specific primers MG-F/MG-R of AMM and MJ-F/MJ-R of AM were designed. The specific PCR method for identifying AMM and AM was established and optimized， and the specificity and applicability of the method were investigated. ResultThe specific PCR conditions for the identification of AMM were primers MG-F/MG-R， annealing at 62 ℃， and 28 cycles. After PCR amplification and gel electrophoresis， the specific band appeared at about 220 bp， with no band for the seeds of AM or adulterants. The specific PCR conditions for identifying the AM were primers MJ-F/MJ-R， annealing at 58 ℃， and 28 cycles. After PCR amplification and gel electrophoresis， the band appeared at about 150 bp， with no band of AMM or adulterants. ConclusionThe specific PCR method established in this study can accurately and quickly identify the seeds of AMM and AM， which provides a basis for the classification and accurate identification of Astragalus seeds and adulterants.

Objective:To construct a double-layer bone-on-a-chip containing bone matrix, with which the process of osteoblast and osteoclast differentiation in vitro is stimulated, aiming to provide a new platform for the development of osteoporosis medications. Methods:Software WorkSoild was used to design the double-layer and double-channel bone-on-a-chip and the template was fabricated by photolithography. With polydimethylsiloxane (PDMS) as the raw material, the main body of the chip was prepared by mold fabrication. The inlets and outlets of the four channels of the culture room were separated with bovine cortex bones and sealed with liquid storage columns. In the chip verification experiment, chips were divided into osteogenic and osteoclastic induction groups and osteogenic and osteoclastic control groups. In the osteogenic and osteoclastic induction groups, precursor cells of mouse embryonic osteoblast, MC3T3-E1 and mouse macrophage RAW264.7 were inoculated on the chip separately. Osteogenic induction lasted 14 days and osteoclastic induction 7 days. MC3T3-E1 cells and RAW264.7 cells were not induced in the osteogenic and osteoclastic control groups. The following indicators were observed: (1) Appearance and sealing performance of the chip: After the chip was prepared, photos were taken to observe its appearance and sealing tests were conducted to observe its sealing performance. (2) Biocompatibility: At 3 days after MC3T3-E1 cells were inoculated onto the chip and cultured and at 1, 3 and 5 days after RAW264.7 cells were inoculated onto the chip and cultured, the cell survival was observed with calcein acetoxymethyl ester/propidium iodide (AM/PI) staining and Cell Counting Kit 8 (CCK-8). (3) Osteogenic differentiation: Alkaline phosphatase (ALP) staining and alizarin red staining were performed on the cells in the osteogenic induction group to observe the osteogenic induction. RNA was collected from the osteogenic induction group and the osteogenic control group, the expression of osteoblast marker Runt-related transcription factor 2 (RUNX2), osteocalcin (OCN) and type I collagen (COL1A1) was detected by real-time florescent quantitative PCR (qPCR), and the differentiation degree and osteogenic ability of osteoblasts were observed. (4) Osteoclast differentiation: tartrate-resistant acid phosphatase (TRAP) staining was performed on cells in the osteoclastic induction group to observe osteoclast differentiation. RNA was extracted from the osteoclastic induction group and the osteoclastic control group for qPCR of osteoclast differentiation-related genes, and the expression levels of the osteoclast marker gene TRAP, cathepsin K (CTSK) and dendritic cell specific transmembrane protein (DC-STAMP) were detected.Results:The double-layer bone-on-a-chip containing bone matrix was 3 cm×3 cm in size and transparent as a whole. The structure of the system on the chip system was compact and had no seepage. It was shown by calcein AM/PI staining that at 3 days after MC3T3-E1 cells and RAW264.7 cells were cultured, very few red fluorescent dead cells were found. CCK-8 test showed that within 5 days after being cultured, the cell viability was all above 90%, indicating that the biocompatibility of the chip was good and the cells could survive and proliferate normally. The results of ALP and alizarin red staining showed that MC3T3-E1 cells successfully differentiated into osteoblasts and produced calcified nodules in the osteogenic induction group at 14 days after the induction. The qPCR results showed that the relative expression level of RUNX2 in MC3T3-E1 cells in the osteogenic induction group was 4.98±0.74, which was significantly higher than that of the control group (0.99±0.03) ( P<0.01). The relative expression level of OCN in MC3T3-E1 cells was 7.98±0.76, which was significantly higher than that of the control group (1.00±0.06) ( P<0.01). The relative expression level of COL1A1 in MC3T3-E1 cells was 7.07±0.56, which was significantly higher than that of the control group (0.97±0.03) ( P<0.01). The TRAP staining results showed that the RAW264.7 cells in the osteoclastic induction group differentiated to giant multinucleated osteoclasts, and TRAP protein was expressed in large quantity in the osteoclasts. The results of qPCR showed that the relative expression level of TRAP in RAW264.7 cells in the osteoclastic induction group was 3.35±0.37, which was significantly higher than that of the control group (1.01±0.06) ( P<0.01). The relative expression level of CTSK in RAW264.7 cells was 3.46±0.79, which was significantly higher than that of the control group (1.01±0.05) ( P<0.01). The relative expression level of DC-STAMP in RAW264.7 cells was 1.92±0.12, which was significantly higher than that of the control group (0.98±0.08) ( P<0.01). Conclusions:The double-layer bone-on-a-chip containing bone matrix is compact in structure, can be cultured in vitro for a long time, has good biocompatibility and can be used for inducing osteogenic and osteoclast differentiation. Therefore, it is expected to provide a new research platform for exploring the mechanism of osteoporosis and medication screening.

Objective:To investigate the mechanism of immunomodulatory effects of umbilical cord mesenchymal stem cells(UC-MSCs)modified by miR-125b-5p on systemic lupus erythematosus(SLE).Methods:The expression level of miR-125b-5p was detected by real-time fluorescence quantitative PCR in UC-MSCs and peripheral blood mononuclear cells(PBMCs)from SLE patients and health checkers.Annexin V-FITC/PI apoptosis detection kit was used to detect the effect of miR-125b-5p on apoptosis of UC-MSCs.MRL/lpr mice in each group were injected with UC-MSCs via tail vein,and T-lymphocyte subsets in the spleen of the MRL/lpr mice were detected by flow cytometry after 5 weeks.The expression levels of interleukin(IL)-4 and IL-17A in serum of MRL/lpr mice were detected by ELISA.Hematoxylin-eosin staining was used to observe the pathological manifestations of the lungs and kidneys of the MRL/lpr mice.Results:miR-125b-5p was significantly down-regulated in PBMCs of SLE patients compared with healthy controls(P＜0.01).Compared with the UC-MSCs group,the expression of miR-125b-5p in UC-MSCs modified by miR-125b-5p group was increased(P＜0.01).The survival rate of UC-MSCs was significantly increased by miR-125b-5p(P＜0.01).Compared with the untreated group of MRL/lpr mice,the expression level of IL-4 in serum was increased(P＜0.05);the expression level of IL-17A was decreased(P＜0.05);the proportion of Th17 cells in the spleen of MRL/lpr mice was decreased(P＜0.05);the inflammatory cells infiltration and micro-thrombosis of lungs and kidneys of MRL/lpr mice were significantly reduced in the UC-MSCs modified by miR-125b-5p treatment group.Conclusion:UC-MSCs modified by miR-125b-5p have immunomodulatory effects on systemic lupus erythematosus.

OBJECTIVE To explore the effects of the water extract of Morinda officinalis on the expressions of sex hormones and receptors in bisphenol A （BPA）-contaminated mice. METHODS Totally 60 male Kunming mice were randomly divided into control group， model group， and low-dose， medium-dose and high-dose groups of M. officinalis water extract （20， 40， 60 mg/kg）， with 12 mice in each group. The model group and M. officinalis water extract groups were given BPA intragastrically [50 mg/（kg·d）， once a day， for 4 consecutive weeks] to establish the BPA-contamination model of mice. After modeling， each drug group was gavaged with the corresponding drug solution， once a day， for 4 consecutive weeks. After the last medication， the body weight and testicular weight of the mice in each group were weighed， the histopathological changes in the testis were observed， and the serum sex hormones [luteinizing hormone （LH）， follicle-stimulating hormone （FSH）] contents and the mRNA and protein expressions of LH receptor （LHR） and FSH receptor （FSHR） in the testicular tissues were detected. RESULTS Compared with the control group， the testicular tissues of mice in the model group had structural degeneration， loose connections between spermatogenic cells and Sertoli cells， obvious lacunae and reduced number of spermatogenic cells； the mRNA and protein expressions of LHR and FSHR in testicular tissues were significantly down-regulated （P＜0.01）， but there were no significant changes in their body weights， testicular weights， and serum contents of LH and FSH （P＞0.05）. Compared with the model group， the histopathological changes of testicular tissues of mice in each dose group of M. officinalis water extract were improved to different degrees， and the mRNA and protein expressions of LHR and FSHR in testicular tissues were up-regulated to different degrees （P＜0.05 or P＜ 0.01）， and some indicator levels were similar to those of the control group （P＞0.05）. However， there were no significant changes in their body weights， testicular weights， and serum contents of LH and FSH （P＞0.05）. CONCLUSIONS The water extract of M. officinalis has a certain improvement effect on testicular injury in BPA-contaminated mice， which might be related to its increase in the mRNA and protein expressions of LHR and FSHR.

Objective To explore the effect of the POC CLOUD intelligent management platform on the training of resi-dent doctors with the principles and operation of various point-of-care testing(POCT)instruments to develop quality control man-agement skills and ensure result accuracy.Methods In alignment with Standardized Training Content and Standards for Resi-dent Trainees(2022 Edition and the development of POCT teaching in departments,the POC CLOUD platform was employed to provide information-based and standardized training for resident trainees.Results The POC CLOUD platform standardized resi-dent trainees'qualifications for operating POCT instruments and facilitated a quick understanding of the instruments'status in ro-tating departments.This approach enhanced resident trainees'learning and quality control management skills,enabling them to analyze and review test results effectively.Conclusion POCT teaching method based on the POC CLOUD platform systematical-ly develops resident trainees'operational and quality control abilities,ensuring the accuracy and reliability of test results and im-proving the overall quality of resident trainees.

Objective:To explore the clinical effect of magnetic resonance imaging (MRI) or ultrasound-guided high intensity focused ultrasound (HIFU) ablation in the treatment of uterine fibroids.Methods:The clinical data of 124 patients with uterine fibroids who received HIFU ablation in the Department of Obstetrics and Gynecology of Xi'an People's Hospital were retrospectively analyzed from April 2020 to February 2023. The patients were divided into an MRI group (58 cases treated with magnetic resonance guided HIFU ablation) and an ultrasound group (66 cases treated with ultrasound guided HIFU ablation) according to different guidance methods. The treatment effects (total effective rate, fibroid ablation volume, fibroid ablation rate), surgical conditions (total energy consumption, total time consumption, energy efficiency factor, irradiation time), incidence of adverse events, ovarian function (follicle stimulating hormone (FSH), inhibin) at 3 months before and after surgery were compared between the two groups. B. Antral follicle count (AFC) and recurrence at 6 and 12 months after surgery. The t-test is used for comparing between groups of metric data that conform to normal distribution, and the chi square test is used for comparing between groups of count data.Results:The total energy consumption, total time consumption and irradiation time in MRI group were longer than those in ultrasound group( (571.68±184.31) kJ vs (494.82±155.03) kJ, (186.21±36.19) min vs (121.63±31.09) min, (26.12±7.93) min vs (22.07±7.46) min), there were have statistical differences( t values were 2.52, 10.69, and 2.93, respectively; P values were 0.013, <0.001, and 0.004, respectively). At 3 months after surgery, the level of FSH in the two groups was risen than that before surgery(MRI group (10.27±1.72) U/L vs (8.67±1.63) U/L, ultrasound group (10.13±1.66) U/L vs (8.46±1.57) U/L), the level of INHB and the number of AFC were declined (MRI group (40.46±5.31) ng/L vs (47.19±4.24) ng/L, (4.22±1.21) vs (6.72±1.48); ultrasound group (39.07±5.12) ng/L vs (48.20±4.77) ng/L, (4.11±1.09) vs (6.63±1.41)) there were have statistical differences ( t values were 5.14, 5.94, 7.54, 9.96, 10.60, and 11.48, respectively; all P<0.001). Conclusion:Both methods of guided HIFU ablation for uterine fibroids can effectively ablate fibroids and improve ovarian function, with safety. Ultrasound guidance has a shorter treatment time and less energy consumption compared to MRI guidance.

Objective To evaluate the molluscicidal effects and costs of spraying 20% suspension concentrate of pyricloben-zuron sulphate (SCPS) with drones against Pomacea canaliculata in paddy environments, so as to provide insights into the extensive applications of pyriclobenzuron against P. canaliculata. Methods On July 2022, a paddy field was selected from Nanchang City, Jiangxi Province as the study area, and 72 independent rectangular plots measuring 2 m × 1 m were allocated in the study area, with 1 m interval between each plot, and 20 P. canaliculata snails gently placed in each plot. The activity of 25% wettable powder of pyriclobenzuron sulphate (WPPS) by manual spraying at doses of 0.50, 1.00, 2.00 g/m² and 4.00 g/m² against P. canaliculata was tested in 54 plots, and manual spraying of 50% wettable powder of niclosamide ethanolamine salt (WPNES) at a dose of 0.10 g/m² served as a chemical control, while manual spraying of the same volume of clean water served as a blank control, with 9 plots in each group. The activity of SCPS against P. canaliculata was tested in the remaining 18 plots. Based on the molluscicidal tests of WPPS, the molluscicidal effect of SCPS by manual spraying at doses of 0.20, 0.30, 0.40 g/m² and 0.50 g/m² against P. canaliculata was evaluated, and manual spraying of WPNES at a dose of 0.10 g/m² served as a chemical control, while manual spraying of the same volume of clean water served as a blank control, with three plots in each group. On July 2023, 14 paddy fields with a mean living P. canaliculata density of > 5 snails/m² were selected from Yujiang District, Yingtan City, Jiangxi Province for molluscicidal tests. Based on the molluscicidal effect of pyriclobenzuron against P. canaliculata in plots, the molluscicidal effects of WPPS by manual spraying at doses of 0.25, 0.50 g/m² and 1.00 g/m² and manual applications of WPPS at dose of 0.25, 0.50, 1.00 g/m² and 2.00 g/m² mixed with soil were tested, and manual spraying of 0.10 g/m² WPNES served as a chemical control group, while manual spraying of the same volume of clean water served as a blank control, with one paddy field in each group. Based on the effect of pyriclobenzuron against P. canaliculata in plots, the activity of SCPS sprayed with drones at doses of 0.25 g/m² and 0.50 g/m² mixed in water at 2 kg/667 m² and 4 kg/667 m² was tested against P. canaliculata, and spraying of the same volume of clean water with drones served as a blank control. All P. canaliculata snails were captured 3 days and 7 days following chemical treatment in plots and paddy fields and identified for survival, and the mortality and corrected mortality of P. canaliculata snails were estimated. In addition, the areas of chemical treatment, amount of molluscicide use and labor costs of chemical treatment were estimated in molluscicidal tests in paddy fields, and the costs of chemical treatment for an area covering 667 m² by drones and manual applications were calculated. Results The mortality of P. canaliculata snails was all 100% in plots 3 days and 7 days following spraying WPPS at doses of 0.50, 1.00, 2.00 g/m² and 4.00 g/m², and the mortality rates of P. canaliculata snails were 66.67% to 100.00% 3 days post-treatment with SCPS at various doses (χ² = 277.897, P < 0.05) and 76.67% to 100.00% 7 days post-treatment (χ² = 274.206, P < 0.05). The mortality rates of P. canaliculata snails were 98.19% to 100.00% 3 days post-treatment with WPPS at various doses in paddy fields. There was a significant difference in the mortality of P. canaliculata snails among WPPS treatment groups and controls (χ² = 270.778, P < 0.05), and there were no significant differences between WPPS treatment groups and the chemical control group (all P values > 0.05), while there were significant differences in the mortality of P. canaliculata snails between WPPS treatment groups and the blank control group (all P values < 0.05). The mortality rates of P. canaliculata snails were 89.83% to 95.31% 3 days post-treatment with SCPS at various doses sprayed with drones, and there was a significant difference in the mortality of P. canaliculata snails among SCPS treatment groups and the blank control group (χ² = 1 132.892, P < 0.05). There were no significant differences in the mortality of P. canaliculata snails among SCPS treatment groups or water mixture groups (all P values > 0.05), and there were significant differences in the mortality of P. canaliculata snails between SCPS treatment groups and the blank control group (all P values < 0.05). The mortality rates of P. canaliculata snails were 94.62% to 100.00% 7 days post-treatment with SCPS at various doses sprayed with drones, and there was a significant difference in the mortality of P. canaliculata snails among SCPS treatment groups and the blank control group (χ² = 1 266.932, P < 0.05), with the highest mortality found following spraying 0.50 g/m² SCPS mixed in 2 kg/667 m² water with drones (P < 0.05). The costs of P. canaliculata snail control by drones and manually were 35.85 Yuan/667 m² and 43.33 Yuan/667 m²; however, the snail control efficiency was 6.67 times higher by drones than by manual applications. Conclusions SCPS sprayed with drones is highly active against P. canaliculata snails in paddy fields. SCPS sprayed with drones is highly efficient and low in cost for P. canaliculata snail control in paddy fields, beaches and river courses.