Objective:To investigate the relationship between sagittal position parameters and screw loosening after unilateral biportal endoscopic (UBE) combined with percutaneous pedicle screw fixation for single-segment lumbar spinal stenosis.Methods:A total of 180 patients with single-level lumbar spinal stenosis who received UBE combined with percutaneous pedicle screw internal fixation in our hospital from June 2020 to June 2023 were enrolled. According to the postoperative follow-up, they were divided into the non-loosening group (112 cases) and the loosening group (68 cases). The demographics, operative parameters and sagittal position [pelvic incidence (PI), pelvic tilt (PT), sacral slope (SS), lumbar lordosis (LL), thoracic kyphosis (TK), sagittal vertical axis (SVA)] before and after operation were compared between the two groups. The indicators with significant differences between the two groups were included in the multivariate logistic regression analysis to analyze the influencing factors of screw loosening. The dose-response relationship between sagittal position parameters and screw loosening was analyzed by restricted cubic spline model.Results:At 6 months and 1 year postoperatively, the fusion rates in the loosening group were 47.1% and 55.9%, respectively, which were significantly lower than the rates (85.7% and 100.0%) in the non-loosening group, respectively ( P<0.05). Postoperatively, the SS in the non-loosening group (36.16°±5.35°) and the loosening group (32.02°±5.54°) and the LL in the loosening group (51.26°±6.35°) were all significantly lower than preoperative values (40.51°±6.11°, 40.49°±6.08°, and 54.08°±6.21°) ( P<0.05). Meanwhile, the PT in the non-loosening group (15.24°±2.69°), TK in the non-loosening group (32.46°±7.29°), PI in the loosening group (56.82°±5.23°), PT in the loosening group (17.01°±3.64°), and TK in the loosening group (34.87°±7.21°) were all significantly higher than preoperative values (13.12°±3.19°, 30.25°±5.17°, 52.84°±5.12°, 13.15°±3.21°, and 30.26°±5.12°) ( P<0.05). Postoperatively, the loosening group had significantly lower SS (32.02°±5.54°), LL (51.26°±6.35°), and SVA (-0.87±1.06 cm) than the non-loosening group (36.16°±5.35°, 53.73°±6.27°, and -0.51±1.04 cm), respectively ( P<0.05). Conversely, the PI (56.82°±5.23°), PT (17.01°±3.64°), and TK (34.87°±7.21°) in the loosening group were significantly higher than those in the non-loosening group (53.48°±5.20°, 15.24°±2.69°, and 32.46°±7.29°), respectively ( P<0.05). Binary logistic regression analysis indicated that PT, SS, LL, and SVA were independent risk factors for screw loosening ( P<0.05). The restricted cubic spline model revealed a nonlinear dose-response relationship between sagittal parameters (PT, SS, LL, and SVA) and screw loosening ( P<0.05). With increasing PT, the odds ratio (OR) for screw loosening increased, whereas increasing SS, LL, and SVA reduced the OR for screw loosening. Conclusion:After UBE combined with percutaneous pedicle screw fixation in single-level lumbar spinal stenosis patients, sagittal position parameters PT were positively correlated with screw loosening, while SS, LL and SVA were negatively correlated with screw loosening.

Objective:To investigate the expression and clinical relevance of MicroRNA(miRNA)-21 and miRNA-22 in urine exosomes of patients diagnosed with contrast-induced nephropathy(CIN).Methods:A total of 258 patients who underwent coronary intervention at our hospital's Department of Cardiology between July 2020 and July 2023 were retrospectively selected.These patients were divided into a CIN group( n=68)and a non-CIN group( n=190)based on the occurrence of contrast-induced nephropathy(CIN)post-coronary intervention.Clinical data from both groups were collected and compared, and levels of miRNA-21 and miRNA-22 in urinary exosomes were detected using polymerase chain reaction.Binary logistic regression was then utilized to analyze the risk factors associated with CIN.Furthermore, the diagnostic accuracy of urine exosomal miRNA-21 and miRNA-22 in detecting CIN was assessed through a receiver operating characteristic(ROC)curve. Results:Various risk factors were identified for contrast-induced nephropathy(CIN)in the study, including age(≥70 years old, 48.5%), diabetes(52.9%), myocardial infarction(11.8%), hypotension(17.7%), reduced glomerular filtration rate(GFR)[≤60 ml·min -1·1.73(m -1) 2, 32.4%], decreased left ventricular ejection fraction(LVEF)(≤0.45, 16.2%), high contrast agent dosage(>200 ml, 17.7%), elevated serum creatinine(Scr)levels 24 hours post-coronary intervention in the CIN group[(76.5±4.5)μmol/L], as well as higher levels of urine exosomal miRNA-21(0.9±0.2)and miRNA-22(5.9±1.1)between CIN group and non-CIN group[32.6%, 32.1%, 2.6%, 5.8%, 18.9%, 5.8%, 5.3%, (68.4±3.3)mol/L, (0.8±0.2), (3.1±0.90]( t=5.441, 9.266, 8.730, 8.671, 5.164, 6.927, 9.846, 8.707, 3.040, 11.233, all P<0.05).Logistic regression analysis showed that age ≥70 years( OR: 3.611, 95% CI: 1.235-10.561), diabetes( OR: 5.886, 95% CI: 1.601-21.641), myocardial infarction( OR: 3.600, 95% CI: 1.204-10.763), hypertension( OR: 6.672, 95% CI: 1.761-25.281), GFR≤60 ml·min -1·1.73(m -1) 2( OR: 3.413, 95% CI: 1.086-10.732), LVEF≤0.45( OR: 5.008, 95% CI: 1.380-18.178), dosage of contrast agent >200mL( OR: 3.389, 95% CI: 1.016-11.299), elevated Scr 24 hours after operation( OR: 0.597, 95% CI: 0.478-0.746)and high expression of miRNA-21( OR: 0.014, 95% CI: 0.001-0.292)and miRNA-22( OR: 0.017, 95% CI: 0.001-0.294)in urine exosomes were the risk factors for CIN(all P<0.05).The AUC of urinary exocrine miRNA-21 and miRNA-22 in the diagnosis of CIN were 0.694 and 0.950, respectively, and the AUC of combined diagnosis was 0.967. Conclusions:The expression levels of miRNA-21 and miRNA-22 in urinary exosomes of patients with contrast-induced nephropathy(CIN)are significantly elevated, indicating their potential clinical relevance in predicting CIN.Simultaneous assessment of both miRNAs can enhance the precision of CIN identification.

Objective:To determine the reference interval of IL-10 level in cerebrospinal fluid of adults using multiplex bead-based flow fluorescent immunoassay(MBFFI).Methods:A total of 743 patients without tumor were involved and grouped by diagno-sis.Cerebrospinal fluid and plasma IL-10 were tested by MBFFI.Results:①Cerebrospinal fluid IL-10 levels of the central nervous system infection group were higher than those of other groups.②The cranial venous sinus thrombosis(CVST)group without tumor,in-fection or inflammatory disease were chosen as nearly normal population.As the distribution of cerebrospinal fluid IL-10 levels in these 250 CVST patients were skewed,95％cut-off level was chosen as upper limit and cerebrospinal fluid IL-10<3.50 pg/ml was the refer-ence interval.③No correlation was found between plasma and cerebrospinal fluid IL-10 levels in the CVST group.Conclusion:The medical reference interval of cerebrospinal fluid IL-10 by MBFFI in adults are determined in this study,that is<3.50 pg/ml,to pro-vide clinical reference for practical applications.

Objective:To analyze the application effects of case-based learning (CBL) + Seminar teaching method based on Toulmin model in the education and teaching of clinical medicine innovation class.Methods:A total of 60 students from the clinical medicine innovation class at The Second Affiliated Hospital of Guangzhou Medical University from September 2021 to September 2023 were selected as research objects. These students were divided into control group ( n=30) and research group ( n=30) according to different teaching programs. The traditional teaching method was adopted in the control group, and the CBL + Seminar teaching method based on Toulmin model was adopted in the research group. The two groups were compared in terms of clinical knowledge, clinical skill, and clinical case analysis scores; changes in clinical thinking ability after teaching; and satisfaction with the teaching process. SPSS 22.0 was used for t-test and chi-square test. Results:The research group significantly outperformed the control group in clinical knowledge [(89.59±3.46) points vs. (83.23±3.02) points], clinical skill [(88.87±3.23) points vs. (83.62±3.13) points], and clinical case analysis [(89.73±3.51) points vs. (82.62±3.19) points] ( t=7.58, 6.39, 8.21, P<0.001). The clinical thinking ability after teaching was significantly higher in the research group compared to the control group [(258.49±13.36) points vs. (242.56±13.02) points] ( t=4.67, P<0.001). The overall satisfaction rate of teaching was significantly higher in the research group compared to the control group (100.00% vs. 80.00%, χ2=4.63, P=0.031). Conclusions:The CBL + Seminar teaching method based on Toulmin model can effectively improve student learning performance and clinical thinking ability, demonstrating a promising application value in the education and teaching of clinical medicine innovation class.

Objective:To investigate the relationship between sagittal position parameters and screw loosening after unilateral biportal endoscopic (UBE) combined with percutaneous pedicle screw fixation for single-segment lumbar spinal stenosis.Methods:A total of 180 patients with single-level lumbar spinal stenosis who received UBE combined with percutaneous pedicle screw internal fixation in our hospital from June 2020 to June 2023 were enrolled. According to the postoperative follow-up, they were divided into the non-loosening group (112 cases) and the loosening group (68 cases). The demographics, operative parameters and sagittal position [pelvic incidence (PI), pelvic tilt (PT), sacral slope (SS), lumbar lordosis (LL), thoracic kyphosis (TK), sagittal vertical axis (SVA)] before and after operation were compared between the two groups. The indicators with significant differences between the two groups were included in the multivariate logistic regression analysis to analyze the influencing factors of screw loosening. The dose-response relationship between sagittal position parameters and screw loosening was analyzed by restricted cubic spline model.Results:At 6 months and 1 year postoperatively, the fusion rates in the loosening group were 47.1% and 55.9%, respectively, which were significantly lower than the rates (85.7% and 100.0%) in the non-loosening group, respectively ( P<0.05). Postoperatively, the SS in the non-loosening group (36.16°±5.35°) and the loosening group (32.02°±5.54°) and the LL in the loosening group (51.26°±6.35°) were all significantly lower than preoperative values (40.51°±6.11°, 40.49°±6.08°, and 54.08°±6.21°) ( P<0.05). Meanwhile, the PT in the non-loosening group (15.24°±2.69°), TK in the non-loosening group (32.46°±7.29°), PI in the loosening group (56.82°±5.23°), PT in the loosening group (17.01°±3.64°), and TK in the loosening group (34.87°±7.21°) were all significantly higher than preoperative values (13.12°±3.19°, 30.25°±5.17°, 52.84°±5.12°, 13.15°±3.21°, and 30.26°±5.12°) ( P<0.05). Postoperatively, the loosening group had significantly lower SS (32.02°±5.54°), LL (51.26°±6.35°), and SVA (-0.87±1.06 cm) than the non-loosening group (36.16°±5.35°, 53.73°±6.27°, and -0.51±1.04 cm), respectively ( P<0.05). Conversely, the PI (56.82°±5.23°), PT (17.01°±3.64°), and TK (34.87°±7.21°) in the loosening group were significantly higher than those in the non-loosening group (53.48°±5.20°, 15.24°±2.69°, and 32.46°±7.29°), respectively ( P<0.05). Binary logistic regression analysis indicated that PT, SS, LL, and SVA were independent risk factors for screw loosening ( P<0.05). The restricted cubic spline model revealed a nonlinear dose-response relationship between sagittal parameters (PT, SS, LL, and SVA) and screw loosening ( P<0.05). With increasing PT, the odds ratio (OR) for screw loosening increased, whereas increasing SS, LL, and SVA reduced the OR for screw loosening. Conclusion:After UBE combined with percutaneous pedicle screw fixation in single-level lumbar spinal stenosis patients, sagittal position parameters PT were positively correlated with screw loosening, while SS, LL and SVA were negatively correlated with screw loosening.

Objective:To determine the reference interval of IL-10 level in cerebrospinal fluid of adults using multiplex bead-based flow fluorescent immunoassay(MBFFI).Methods:A total of 743 patients without tumor were involved and grouped by diagno-sis.Cerebrospinal fluid and plasma IL-10 were tested by MBFFI.Results:①Cerebrospinal fluid IL-10 levels of the central nervous system infection group were higher than those of other groups.②The cranial venous sinus thrombosis(CVST)group without tumor,in-fection or inflammatory disease were chosen as nearly normal population.As the distribution of cerebrospinal fluid IL-10 levels in these 250 CVST patients were skewed,95％cut-off level was chosen as upper limit and cerebrospinal fluid IL-10<3.50 pg/ml was the refer-ence interval.③No correlation was found between plasma and cerebrospinal fluid IL-10 levels in the CVST group.Conclusion:The medical reference interval of cerebrospinal fluid IL-10 by MBFFI in adults are determined in this study,that is<3.50 pg/ml,to pro-vide clinical reference for practical applications.

Objective:To analyze the application effects of case-based learning (CBL) + Seminar teaching method based on Toulmin model in the education and teaching of clinical medicine innovation class.Methods:A total of 60 students from the clinical medicine innovation class at The Second Affiliated Hospital of Guangzhou Medical University from September 2021 to September 2023 were selected as research objects. These students were divided into control group ( n=30) and research group ( n=30) according to different teaching programs. The traditional teaching method was adopted in the control group, and the CBL + Seminar teaching method based on Toulmin model was adopted in the research group. The two groups were compared in terms of clinical knowledge, clinical skill, and clinical case analysis scores; changes in clinical thinking ability after teaching; and satisfaction with the teaching process. SPSS 22.0 was used for t-test and chi-square test. Results:The research group significantly outperformed the control group in clinical knowledge [(89.59±3.46) points vs. (83.23±3.02) points], clinical skill [(88.87±3.23) points vs. (83.62±3.13) points], and clinical case analysis [(89.73±3.51) points vs. (82.62±3.19) points] ( t=7.58, 6.39, 8.21, P<0.001). The clinical thinking ability after teaching was significantly higher in the research group compared to the control group [(258.49±13.36) points vs. (242.56±13.02) points] ( t=4.67, P<0.001). The overall satisfaction rate of teaching was significantly higher in the research group compared to the control group (100.00% vs. 80.00%, χ2=4.63, P=0.031). Conclusions:The CBL + Seminar teaching method based on Toulmin model can effectively improve student learning performance and clinical thinking ability, demonstrating a promising application value in the education and teaching of clinical medicine innovation class.

Objective:To investigate the expression and clinical relevance of MicroRNA(miRNA)-21 and miRNA-22 in urine exosomes of patients diagnosed with contrast-induced nephropathy(CIN).Methods:A total of 258 patients who underwent coronary intervention at our hospital's Department of Cardiology between July 2020 and July 2023 were retrospectively selected.These patients were divided into a CIN group( n=68)and a non-CIN group( n=190)based on the occurrence of contrast-induced nephropathy(CIN)post-coronary intervention.Clinical data from both groups were collected and compared, and levels of miRNA-21 and miRNA-22 in urinary exosomes were detected using polymerase chain reaction.Binary logistic regression was then utilized to analyze the risk factors associated with CIN.Furthermore, the diagnostic accuracy of urine exosomal miRNA-21 and miRNA-22 in detecting CIN was assessed through a receiver operating characteristic(ROC)curve. Results:Various risk factors were identified for contrast-induced nephropathy(CIN)in the study, including age(≥70 years old, 48.5%), diabetes(52.9%), myocardial infarction(11.8%), hypotension(17.7%), reduced glomerular filtration rate(GFR)[≤60 ml·min -1·1.73(m -1) 2, 32.4%], decreased left ventricular ejection fraction(LVEF)(≤0.45, 16.2%), high contrast agent dosage(>200 ml, 17.7%), elevated serum creatinine(Scr)levels 24 hours post-coronary intervention in the CIN group[(76.5±4.5)μmol/L], as well as higher levels of urine exosomal miRNA-21(0.9±0.2)and miRNA-22(5.9±1.1)between CIN group and non-CIN group[32.6%, 32.1%, 2.6%, 5.8%, 18.9%, 5.8%, 5.3%, (68.4±3.3)mol/L, (0.8±0.2), (3.1±0.90]( t=5.441, 9.266, 8.730, 8.671, 5.164, 6.927, 9.846, 8.707, 3.040, 11.233, all P<0.05).Logistic regression analysis showed that age ≥70 years( OR: 3.611, 95% CI: 1.235-10.561), diabetes( OR: 5.886, 95% CI: 1.601-21.641), myocardial infarction( OR: 3.600, 95% CI: 1.204-10.763), hypertension( OR: 6.672, 95% CI: 1.761-25.281), GFR≤60 ml·min -1·1.73(m -1) 2( OR: 3.413, 95% CI: 1.086-10.732), LVEF≤0.45( OR: 5.008, 95% CI: 1.380-18.178), dosage of contrast agent >200mL( OR: 3.389, 95% CI: 1.016-11.299), elevated Scr 24 hours after operation( OR: 0.597, 95% CI: 0.478-0.746)and high expression of miRNA-21( OR: 0.014, 95% CI: 0.001-0.292)and miRNA-22( OR: 0.017, 95% CI: 0.001-0.294)in urine exosomes were the risk factors for CIN(all P<0.05).The AUC of urinary exocrine miRNA-21 and miRNA-22 in the diagnosis of CIN were 0.694 and 0.950, respectively, and the AUC of combined diagnosis was 0.967. Conclusions:The expression levels of miRNA-21 and miRNA-22 in urinary exosomes of patients with contrast-induced nephropathy(CIN)are significantly elevated, indicating their potential clinical relevance in predicting CIN.Simultaneous assessment of both miRNAs can enhance the precision of CIN identification.

Objective:To explore potential predictors of refractory Mycoplasma pneumoniae pneumonia (RMPP) in early stage. Methods:The prospective multicenter study was conducted in Zhejiang, China from May 1 st, 2019 to January 31 st, 2020. A total of 1 428 patients with fever >48 hours to <120 hours were studied. Their clinical data and oral pharyngeal swab samples were collected; Mycoplasma pneumoniae DNA in pharyngeal swab specimens was detected. Patients with positive Mycoplasma pneumoniae DNA results underwent a series of tests, including chest X-ray, complete blood count, C-reactive protein, lactate dehydrogenase (LDH), and procalcitonin. According to the occurrence of RMPP, the patients were divided into two groups, RMPP group and general Mycoplasma pneumoniae pneumonia (GMPP) group. Measurement data between the 2 groups were compared using Mann-Whitney U test. Logistic regression analyses were used to examine the associations between clinical data and RMPP. Receiver operating characteristic (ROC) curves were used to analyse the power of the markers for predicting RMPP. Results:A total of 1 428 patients finished the study, with 801 boys and 627 girls, aged 4.3 (2.7, 6.3) years. Mycoplasma pneumoniae DNA was positive in 534 cases (37.4%), of whom 446 cases (83.5%) were diagnosed with Mycoplasma pneumoniae pneumonia, including 251 boys and 195 girls, aged 5.2 (3.3, 6.9) years. Macrolides-resistant variation was positive in 410 cases (91.9%). Fifty-five cases were with RMPP, 391 cases with GMPP. The peak body temperature before the first visit and LDH levels in RMPP patients were higher than that in GMPP patients (39.6 (39.1, 40.0) vs. 39.2 (38.9, 39.7) ℃, 333 (279, 392) vs. 311 (259, 359) U/L, both P<0.05). Logistic regression showed the prediction probability π=exp (-29.7+0.667×Peak body temperature (℃)+0.004×LDH (U/L))/(1+exp (-29.7+0.667×Peak body temperature (℃)+0.004 × LDH (U/L))), the cut-off value to predict RMPP was 0.12, with a consensus of probability forecast of 0.89, sensitivity of 0.89, and specificity of 0.67; and the area under ROC curve was 0.682 (95% CI 0.593-0.771, P<0.01). Conclusion:In MPP patients with fever over 48 to <120 hours, a prediction probability π of RMPP can be calculated based on the peak body temperature and LDH level before the first visit, which can facilitate early identification of RMPP.

Objective: To investigate the core information about tuberculosis prevention and control knowledge among residents in Jiangxi Province, so as to provide insights into formulation of health education strategy for tuberculosis prevention and control. Methods: Permanent residents at ages of 15 years and older were sampled from Jiangxi Province using a multi-stage stratified cluster sampling method from January to June 2021. Participants' demographic features and access to health education for tuberculosis prevention and control were collected through questionnaires, and the awareness of core information about tuberculosis prevention and control was investigated according to Key Points for Core Information and Knowledge about Tuberculosis Prevention and Control (2016 version). Results: A total of 1 280 questionnaires were allocated, and 1 217 valid questionnaires were recovered, with an effective recovery rate of 95.08%. The respondents included 605 men (49.71%) and 612 women (50.29%), and had a mean age of (50.05±15.78) years. The overall awareness of core information of tuberculosis prevention and control was 80.46%, and the awareness rates of “Pulmonary tuberculosis is suspected and timely healthcare-seeking is required if you have cough or expectoration for more than 2 weeks”, “Pulmonary tuberculosis is mainly transmitted via respiratory tract, and everyone is likely to be infected”, “No spit anywhere, covering mouth and nose when coughing or sneezing, and wearing a mouth mask may reduce the transmission of pulmonary tuberculosis”, “Pulmonary tuberculosis is a chronic infectious disease that poses a long-term damage to health” and “Most patients may be cured and others are avoided to be infected following standard whole-process treatment” were 90.22%, 86.52%, 85.95%, 80.03% and 59.57%, respectively. There were 491 respondents that were aware of all core information about tuberculosis prevention and control (40.35%), and network was the predominant route for acquiring health education about tuberculosis prevention and control (62.08%, 586/944). Conclusions The overall awareness of core information about tuberculosis prevention and control did not achieve the target set in the 13th Five-year Plan for Tuberculosis Prevention and Control, and the awareness of tuberculosis treatment-related knowledge was low.