Objective To investigate the efficacy of micrornas(miR)-27B-3P combined with miR-215 in predicting the recurrence of early gastric cancer after endoscopic submucosal dissection(ESD).Methods A total of 122 patients with early gastric cancer admitted to the hospital from January 2021 to February 2022 were selected.All patients received ESD surgery and were followed up for 10～15 months,average(12.57±1.83)months.Patients with early gastric cancer were divided into recurrence group and non-recurrence group according to whether they had recurrence after ESD surgery.The relative expression levels of miR-27b-3p and miR-215 and clinical data of the two groups were compared to analyze the factors affecting the recurrence of early gastric cancer patients after ESD surgery,and analyze the relative expression levels of miR-27b-3p and miR-215 and the predictive value of their combination for the recurrence of early gastric cancer patients after ESD surgery.Results After 10～15 months,average(12.57±1.83)months of follow-up,3 cases of 122 patients were lost to follow-up,the follow-up rate was 97.54％,of which 12 cases relapsed,and the remaining 107 cases did not relapse.The miR-27b-3p in the relapsed group was lower than that in the non-relapsed group(P＜0.05),and the relative expression of miR-215 in the relapsed group was higher than that in the non-relapsed group(P＜0.05).The proportion of patients with lesion size ≥3 cm and infiltration depth of SM2-SM3 in recurrence group was higher than that in non-recurrence group(P＜0.05),and the proportion of patients with R0 resection in recurrence group was lower than that in non-recurrence group(P＜0.05).Logistic multivariate regression analysis showed that the lesion size was ≥3 cm and the depth of invasion was SM2-SM3,the relative expression level of miR-27b-3p,the relative expression level of miR-215 were the influential factors for recurrence of early gastric cancer patients after ESD operation(P＜0.05).The relative expression levels of miR-27b-3p and miR-215 and their combined prediction of the area under the curve(AUC)of ESD postoperative recurrence in early gastric cancer patients were 0.783,0.845 and 0.935,respectively.Conclusion miR-27b-3p and miR-215 can be used to predict the recurrence risk of early gastric cancer patients after ESD surgery,and the combination of Mir-27B-3P and Mir-215 has higher predictive value.

Ferroptosis is regarded as a novel and regulatable form of cell death, with its main characteristics being abnormal iron metabolism and the accumulation of lipid peroxides. Although there have been breakthroughs in the research of ferroptosis in tumors and degenerative diseases, its research in skin diseases is relatively scarce. Starting from the development of the concept of ferroptosis, this article expounds the basic characteristics and regulatory mechanisms of ferroptosis. In the field of skin diseases, we emphasize the importance of ferroptosis and discuss in detail the research and application of ferroptosis in various skin diseases, aiming to provide effective guidance for the treatment and clinical practice of various skin diseases, and offer new ideas for the future research direction of skin diseases.

Mycoplasma capricolum subsp. capripneumoniae (Mccp) is the cause of contagious caprine pleuropneumonia (CCPP) in goats. Inactivated vaccines and capsular polysaccharide (CPS) indirect hemagglutination reagents are available for prevention and serological detection, but high culture costs and complex antigen quantification have been plagued by production staff. In order to solve these problems in production practice, a sugar fermentation medium with an initial pH value of 7.8, which could improve the production of two antigens simultaneously, was screened out by changing the initial pH value based on previous Mccp metabolomics analysis. Since phenol red can be identified by UV absorption spectrum and cetyltrimethylammonium bromide (CTAB) can bind to anionic capsular polysaccharide, a UV spectrum measurement method for analyzing the culture stage reached by Mccp and a CTAB precipitation test for relative quantification of capsular polysaccharide antigen content in the fermentation broth were established. The UV spectrum observation method can guide the production of Mccp according to the growth curve of Mccp, which greatly reduces the monitoring time of the traditional CCU method and improves the accuracy of the original eye-observation method. The established CTAB precipitation test can complete the monitoring of CPS content within 5 hours, which greatly reduces the time required compared with the traditional differential technique, and its accuracy was verified by the phenol-sulfuric acid method. The optimized culture medium and the two correlation comparison methods established in this study can effectively reduce the production cost of Mccp and improve the production efficiency. The two assays have been used in the research at our laboratory, which provides experimental data for further improvement of the production process of CCPP inactivated vaccine and capsular polysaccharide as well as rapid quantification.
Humans ; Animals ; Goats ; Cetrimonium ; Mycoplasma ; Polysaccharides

Objective:To evaluate the clinical status, and analyz obstacles and facilitators for perioperative deep vein thrombosis prevention of brain neoplasms based on the Ottawa model of research use (OMRU).Methods:A total of 93 patients with brain tumors who were admitted to the Department of Neurosurgery, the First Affiliated Hospital of Nanjing Medical University from April to May 2021 and 33 nurses in the neurosurgery ward and operating room neurosurgery special group were selected as the baseline review subjects by convenience sampling. Based on the framework of evidence-based continued quality improvement of Fudan University, we searched BMJ Best Practice, UpToDate, The Joanna Briggs Institute Library, International Guideline Library, American Guideline Network, Scottish Intercollegiate Guideline Network, National Institutes for Health and Clinical Technology Optimization, Medline, Medlive, China National Knowledge Infrastructure, VIP, Wanfang and SinoMed according to the '6S' evidence pyramid from inception to January 1, 2021 for all clinical decisions, recommended practices, best practice information, evidence summary, guidelines and expert consensus on venous thrombosis assessment, prevention, screening, nursing and health education. The best evidence was summarized, and the final review indicators were formulated through two rounds of expert correspondence. According to the results of baseline review, barriers and facilitators were analyzed, and countermeasures were developed guided by OMRU.Results:A total of 19 best evidences were included, and 34 review indicators were developed in this study. Among them, only 4 indicators had a compliance rate of 100%, 18 ones had a compliance rate of 0, and the other 12 ones had a compliance rate of 6.5%-97.8%. A multi-factor analysis of the review results showed that the main obstacles of evidence implementation were the feasibility and comprehensibility at evidence level, the lack of knowledge and heavy workloads at the potential practitioner level, insufficient education materials, trainings and preventive equipment at system level. Furthermore, the reliable sources of evidence at evidence level, supports from practitioners at the potential practitioner level and system resources (such as training, national and hospital policies, etc.) at system level may contribute to the clinical application of evidence.Conclusions:There was still a huge gap between the best evidence and clinical practice. The obstacles and facilitating factors in evidence transformation should be evaluated scientifically and comprehensively, and corresponding countermeasures should be given to promote the application of evidence in clinical practice.

Objective:To develop an inquiry learning community centered on learning experience in the course of Nursing Clinical Comprehensive Experiment to verify the influence of this teaching mode on the learning gains and practical ability of nursing students. Methods:A total of 132 undergraduate nursing students form grade 3 in Chongqing Medical University were enrolled. The participants were randomly assigned to a learning community group ( n = 69) and a control group ( n = 63) using Minitab 14.0 software. The students in the learning community group adopted the inquiry learning community mode in accordance with the curriculum map for online self-learning, group discussion and skills practice, while the control group received the teacher-led teaching mode for offline theory teaching, operation teaching and skills practice. After the teaching intervention, both groups of students received the assessment questionnaire of learning gains and the comprehensive experimental ability evaluation. Chi-square test or paired t-test was performed using SPSS 23.0. Results:Compared with the control group, students in the learning community group reported that their sense of learning gain was enhanced ( P<0.001, Cohen d=0.97); sub-items showed that the effect size for the understanding of learning content ( P<0.001, Cohen d=1.22), the overall course situation ( P<0.001, Cohen d=0.90), the course activities ( P=0.000, Cohen d=0.83), and the information obtained ( P<0.001, Cohen d=1.16) was significantly different. The total score of practical ability of comprehensive experiment was significantly improved ( P = 0.005, Cohen d=0.51), in which the experimental situation displays ( P=0.002, Cohen d=0.55) and experimental effect ( P=0.006, Cohen d=0.49) were better than the control group. There was no significant difference in the performance of experimental preparation and case analysis between the two groups. Conclusion:Developing an inquiry learning community in nursing clinical comprehensive experiment can effectively enhance student' sense of learning gains and promote the improvement of clinical practical ability.

OBJECTIVE To explore the extraction process of volatile oil from the stems， leaves and roots of Glehnia littoralis， analyze the chemical components of the volatile oil from the stems， leaves and roots of G. littoralis， and preliminarily evaluate its in vitro antifungal activity. METHODS Based on the steam distillation method， single factor test and orthogonal experiment were conducted to optimize the extraction method of volatile oil from the stems， leaves and roots of G. littoralis. The chemical components of the volatile oil from the stems， leaves and roots of G. littoralis were identified by using gas chromatography-mass spectrometry （GC-MS) technology and their relative contents were calculated. The antifungal activity of volatile oils from the stems， leaves and roots of G. littoralis against Fusarium solani， Fusarium incarnatum， Fusarium oxysporum， Aspergillus parasiticus and Aspergillus flavus was determined by paper diffusion method. RESULTS The optimal extraction process of G. littoralis was solid-liquid ratio of 1∶15， distillation time of 5 hours， and KCl concentration of 15%. Eleven components were identified from the volatile oil of the stems and leaves of G. littoralis， and a total of eight components were identified from the volatile oil of the roots. Ginsenethinol was a common component in the volatile oil from the stems， leaves and roots of G. littoralis， its contents in the stems and leaves， roots were 38.21% and 74.02%， respectively. The volatile oil from the stems， leaves and roots of G. littoralis had a certain E-mail：zwhjzs@126.com inhibitory effect on F. solani， F. incarnatum， F. oxysporum， A. parasiticus and A. flavus， especially volatile oil from the stems and leaves. CONCLUSIONS There is a significant difference in chemical components of the volatile oil between the roots， stems and leaves of G. littoralis， both of which have certain in vitro antifungal activity.

Objective:To report 3 cases of rare subtypes of hereditary epidermolysis bullosa.Methods:Clinical data were collected from the probands and their relatives, whole-exome sequencing was performed to screen disease-causing mutations in the probands, and Sanger sequencing or qPCR was conducted to verify the mutations in patients and their relatives.Results:Case 1 mainly presented with linear red scars on the back, and the proband, her mother with similar clinical manifestations and her asymptomatic daughter all carried a mutation c.4573G>A (p.Gly1525Arg) in the COL7A1 gene. Case 2 presented with generalized reticular pigmentation all over the body and occasional blisters restricted to the hand and foot, and carried a de novo mutation c.74C>T (p.Pro25Leu) in the KRT5 gene. Case 3 presented with pigmentation abnormalities mainly located at the sun-exposed sites and incomplete syndactyly of the left hand, and carried homozygous deletion mutations in exons 2-6 of the FERMT1 gene, which were inherited from her asymptomatic parents. Case 1 was diagnosed with dominant dystrophic epidermolysis bullosa pruriginosa, case 2 was diagnosed with epidermolysis bullosa simplex with mottled pigmentation, and case 3 was diagnosed with Kindler epidermolysis bullosa. Conclusion:The clinical manifestations of epidermolysis bullosa vary greatly, and gene detection is very important for confirmation of diagnosis of its rare types.

OBJECTIVE: To summarize clinical manifestations and results of genetic testing in 12 children with Gitelman syndrome (GS). METHODS: Clinical data of the children was collected. Whole exome sequencing(WES) was carried out to screen potential variants of genomic DNA. Candidate variants were verified by Sanger sequencing. RESULTS: The patients have included 10 boys and 2 girls, whom were diagnosed at between 2.8 to 15.0 year old. Six patients were due to infections, 5 were due to short stature, and 1 was due to lower limb weakness. All patients were found to carry variants of SLC12A3 gene, which included 11 with compound heterozygous variants and 1 with homozygous variant. All of the 19 alleles of the SLC12A3 gene carried by the patients were delineated, which included 15 missense variants, 2 frameshift variants and 2 splice region variants. These variants were unreported previously, which included c.578_582dupCCACC (p.Asn195Profs*109), c.251C>T (p.Pro84Leu) and c.2843G>A (p.Trp948X). CONCLUSION The clinical symptoms of GS in children are atypical and often seen in older children. For children with occasional hypokalemia associated with growth failure, GS should be suspected. The majority of GS children carry two pathogenic variants of the SLC12A3 gene, mainly compound heterozygotes, among which p.Thr60Met is the most common one. The discovery of new variants has enriched the spectrum of SLC12A3 gene variants.
Adolescent ; Child ; Child, Preschool ; DNA ; Female ; Genetic Testing ; Gitelman Syndrome/genetics* ; Humans ; Hypokalemia/genetics* ; Male ; Solute Carrier Family 12, Member 3/genetics*

Objective:To analyze the clinical features and CYP17A1 gene mutation of 17α-hydroxylase/17, 20-lyase deficiency (17OHD). Methods:The clinical data, laboratory examination and genetic results of 6 children with 17OHD in the Department of Endocrinology, Children′s Hospital Affiliated to Capital Institute of Pediatrics from March 2014 to December 2019 were enrolled and analyzed retrospectively.Meanwhile, the clinical types of all congenital adrenocortical hyperplasia (CAH) patients were calculated and then the incidence of 17OHD was calculated.Results:The 6 cases were from 5 families, and the age at diagnosis was ranged from 1 year and 6 months to 15 years old, in which 2 cases were 46, XX and 4 cases were 46, XY.Their gender were all female.Three cases presented with hypertension (50.0%), 4 cases with hypokalemia (66.7%), and 1 case with labia mass (16.7%). The gonad developed into a testis in patients with 46, XY, and patients with 46, XX had ovarian hypoplasia.The laboratory tests revealed an decrease in the cortisol at 8 AM in all cases, ranging from 0.62 to 5.93 mg/L.Five cases displayed an increase in adrenocorticotropic hormone (ACTH) in the range of 84-271 ng/L, and 1 patient with normal ACTH (58 ng/L) had a peak cortisol of 1.75 mg/L after the ACTH challenge test.Elevated progesterone was detected in 6 patients with a normal 17 hydroxyprogesterone level.Further results proved low levels of testosterone and estradiol, and high levels of luteinizing hormone (LH), and follicle stimulating hormone (FSH). CT scan showed mild adrenal hyperplasia in all cases.Among 114 CAH patients during the same period, the incidence of 17OHD came second at 5.3%.The CYP17A1 gene mutation results indicated that 2 unrelated patients were homozygous mutation for p. Y329fs (c.985_987delTACinsAA), 2 siblings were compound heterozygous mutations for p. Y329fs and exon 1-7 deletion, 1 patient was compound heterozygous mutations of p. Y329fs and p. R416C (c.1246C>T), and 1 patient was homozygous mutations for p. L465P (c.1394T> C), which was first reported in China. Conclusions:17OHD is not rare in CAH.Female children with hypokalemia, hypertension, and hypogonadism can lead to diagnostic suspicion of 17OHD.The p. Y329fs mutation in Chinese 17OHD children is a hotspot.The p. L465P (c.1394T>C) mutation is a new mutation in China and it could enrich the mutant spectrum of CYP17A1 gene in China.

Objective:A new algorithm based on Hough transform (HT) was proposed to improve the accuracy and stability of the film image analysis of Automatic Quality Assurance (AQA) test, and to explore the influence of the resolution of film image on the test results.Methods:Nine pairs of films were obtained for AQA modules in this study. Firstly, the median filter was used to preprocess the grayed-out film image to remove noise interference. Then, a global threshold was utilized to binarize the image. The images were edge-detected and the film edge line was extracted by Hough transform. The film image was transformed to the correct position. Finally, the edge of the field shadow circle and the shadow circle of the tungsten ball were extracted by the edge detection method and Hough transform. The radial error was finally obtained by analyzing the concentricity.Results:There was no significant difference in the accuracy between the test results yielded by the HT method and the AQA software ( P>0.05). The difference in the standard deviation of the test results was statistically significant ( P=0.027), indicating that the algorithm increased the stability while ensuring the accuracy of film analysis. Increasing the resolution of film scanning failed to significantly improve the accuracy and stability of film analysis in both two methods. Conclusions:The algorithm used in this study can eliminate the human error caused by film scanning placement while ensuring the accuracy of film analysis, providing a more stable way for the AQA test of the CyberKnife system.