BACKGROUND:Human periodontal stem cells have a certain inhibitory effect on the pro-inflammatory function of M1-type macrophages,and it is not clear whether icariin,which has anti-inflammatory and other pharmacological activities,can enhance the inhibitory effect of human periodontal stem cells on M1-type macrophages. OBJECTIVE:To investigate the effect of icariin on M1 macrophages after pretreatment of human periodontal stem cells. METHODS:Primary human periodontal stem cells were isolated,cultured and characterized.THP-1 was induced and M1-type macrophages were identified by immunofluorescence staining and PCR.Human periodontal stem cells were cultured with α-MEM complete medium containing concentrations of 10-7,10-6,10-5,and 10-4 mol/L icariin,and the cytotoxicity of Icariin on human periodontal stem cells was detected by the CCK-8 assay at 1,3,5,and 7 days,respectively.α-MEM complete medium,untreated α-MEM conditioned medium for human periodontal stem cells and α-MEM conditioned medium for human periodontal stem cells pretreated with icariin for 24 hours were conditioned with RPMI-1640 complete medium in a 1:1 ratio for M1-type macrophages in the control,untreated,and pretreated groups,and 24 hours later,the mRNA expression of inflammatory factors in M1 macrophages was detected by RT-PCR.The protein expression of inflammatory factors in M1 macrophages was detected by ELISA.The expression of surface markers and nuclear factor-κB pathway-related proteins in M1/M2 macrophages was detected by western blot assay. RESULTS AND CONCLUSION:(1)CCK-8 assay results showed that 10-7,10-6,10-5,10-4 mol/L icariin was not cytotoxic to the human periodontal stem cells,and from day 5 onwards,all the concentrations increased the cell viability,and promoted the cell proliferation.10-4 mol/L icariin was selected for follow-up experiment.(2)RT-PCR and ELISA results showed that compared with the control group,the untreated group and the pretreated group both decreased the expression and secretion of interleukin-1β,interleukin-6,and tumor necrosis factor-α of M1-type macrophages(P<0.05),and the pretreated group was lower than the untreated group(P<0.05).(3)Western blot assay results showed that compared with the untreated group,the expression of CD86 was significantly lower in the pretreated group(P<0.05);compared with the control group,the expression of CD206,a surface marker of M2-type macrophages,was elevated in both the untreated and pretreated groups(P<0.01),and it was significantly higher in the pretreated group than in the untreated group(P<0.01).In M1-type macrophages after 24 hours of conditioned culture,compared with the control group,the expression of nuclear factor-κB/P65 was decreased in the untreated group and the pretreated group(P<0.01),and the expression of p-IκBα was decreased only in the pretreated group(P<0.01);the expression of both nuclear factor-κB/P65 and p-IκBα was significantly reduced in the pretreated group compared with the untreated group(P<0.05),while the difference of IκBα in the three groups was not statistically significant.(4)These results indicated that icariin enhanced the inhibitory effect of human periodontal stem cells on M1-type macrophages,and this effect may be related to the inhibition of the nuclear factor-κB signaling pathway of macrophages.

Objective To explore the role of neogambogic acid in the characteristics of colorectal cancer stem cells (CRC-CSCs) through the Wnt/β-catenin signaling pathway. Methods The colorectal cells SW480 and HCT166 were divided into control group and neogambogic acid groups (1.5, 3, 6, and 12 μmol/L). The viability of CRC-CSCs was determined by MTT method, and spheroid and clone formation assays were used to assess the capacity of spheroid formation and self-renewal ability of the cells. The effects of neogambogic acid on the apoptosis and cell cycle of CRC-CSCs were evaluated by flow cytometry assays. Real-time quantitative PCR was used to detect the mRNA expression levels of relative markers (CD133, CD44, ALDH1, Oct4, and Nanog) of CRC-CSCs, and the protein expression levels of the self-renewal marker (PCNA), apoptosis markers (cleaved caspase-3 and cleaved caspase-9), and Wnt/β-catenin signaling pathway markers (p-GSK3β, GSK3β, β-catenin, and Wnt) were analyzed using Western blot. Results Compared with the control group, after neogambogic acid treatment, the viability of SW480 and HCT116 cells decreased (P<0.05), the spheroid forming ability and the clone numbers of CRC-CSCs decreased (P<0.001, P<0.01) but the cell apoptosis rate increased (P<0.01), and cell cycle was arrested in G₀/G₁ phase. Moreover, neogambogic acid downregulated the mRNA and protein expression of relative markers of CRC-CSCs (CD133, CD44, ALDH1, Oct4, and Nanog), PCNA, p-GSK3β, β-catenin, and Wnt (P<0.05) and upregulated the expression of cleaved caspase-3, cleaved caspase-9, and GSK3β (P<0.01). Conclusion Neogambogic can inhibit the stem cell properties of colorectal cells via inhibition of Wnt/β-catenin signaling pathway. As a result, neogambogic acid may be an attractive agent against colorectal cancer.

Bioactive compounds derived from herbal medicinal plants modulate various therapeutic targets and signaling pathways associated with cardiovascular diseases (CVDs), the world's primary cause of death. Ginkgo biloba, a well-known traditional Chinese medicine with notable cardiovascular actions, has been used as a cardio- and cerebrovascular therapeutic drug and nutraceutical in Asian countries for centuries. Preclinical studies have shown that ginkgolide B, a bioactive component in Ginkgo biloba, can ameliorate atherosclerosis in cultured vascular cells and disease models. Of clinical relevance, several clinical trials are ongoing or being completed to examine the efficacy and safety of ginkgolide B-related drug preparations in the prevention of cerebrovascular diseases, such as ischemia stroke. Here, we present a comprehensive review of the pharmacological activities, pharmacokinetic characteristics, and mechanisms of action of ginkgolide B in atherosclerosis prevention and therapy. We highlight new molecular targets of ginkgolide B, including nicotinamide adenine dinucleotide phosphate oxidases (NADPH oxidase), lectin-like oxidized LDL receptor-1 (LOX-1), sirtuin 1 (SIRT1), platelet-activating factor (PAF), proprotein convertase subtilisin/kexin type 9 (PCSK9) and others. Finally, we provide an overview and discussion of the therapeutic potential of ginkgolide B and highlight the future perspective of developing ginkgolide B as an effective therapeutic agent for treating atherosclerosis.

In recent years,functional intraocular lenses(IOLs)have provided an effective choice for improving the visual quality of cataract patients,with high postoperative satisfaction and spectacle independence,but there are also ad-verse reactions such as glare and stereoscopic damage.More ophthalmologists have proposed the implantation of two dif-ferent IOLs to give full play to their respective advantages,thereby improving postoperative effects.It is an important topic to explore an optimized IOL implantation program for the treatment of cataracts and the correction of presbyopia.This arti-cle reviews the research progress on blended implantation of IOLs in treating cataracts and correcting presbyopia.

Objective:To explore the application value of patient data-based real-time quality control (PBRTQC) in enhancing the effectiveness of internal quality control (IQC) management.Methods:From the PBRTQC real-time quality control intelligent monitoring platform integrated with the laboratory information system (LIS), a total of 35,631 test results of red blood cell (RBC) count, white blood cell (WBC) count, and dehydroepiandrosterone sulfate (DHEA-S) were collected from patients of the Department of General Xi'an Area Medical Laboratory Center from August 1, 2023, to April 1, 2024. The platform was used in patient data distribution characteristics test, EWMA real-time quality control chart procedure establishment, performance validation, effect evaluation, best procedure selection, and real-time operation. The performance evaluation indexes of the best PBRTQC procedure establishment, the cut-off limit range, weighting coefficient, cumulative mean, standard deviation (SD), coefficient of variation ( CV) of the EWMA real-time quality control chart, and the cumulative mean, SD, and CV of its internal quality control data in the same period were counted, and at the same time compared with the quality target (1/3TEa). Coefficient of variation analyses were performed to compare the quality control status of PBRTQC and conventional internal quality control in the presence of warning or alarm prompts based on quality control process records, and alarm messages. Results:The evaluation indexes of the optimal procedures for RBC count, WBC count, and DHEA-S were the probability of error detection (Ped) between 93%-97% and greater than 90%, the false positive rate (FPR) between 0.0%-0.5%, the false negative rate (FNR) between 3.0%-7.0%, and the average number of the patient sample until error detection (ANPed) between 5-11, which is in line with the optimal quality control efficacy quality requirements for the PBRTQC procedure. The patient outcome cut-off concentrations for the optimal procedure EWMA quality control charts ranged from RBC count (3.92-5.16)×10 12/L, WBC count (4.28-7.50)×10 9/L, and DHEA-S (830-2 160) μg/L; (2 160-4 210) μg/L. The weighting coefficients were 0.05, 0.03, and 0.03, respectively. The real-world application of the EWMA real-time quality control charts showed stable and excellent analytical performance of the measurement system, such as out-of-control alarm: RBC count, 1 true alarm, Ped of 95.85%, and FPR of 0%. The cumulative CV of EWMA was less than the quality target; the cumulative CV of DHEA-S was 7.66% and 9.47%, respectively, and the cumulative CV of low level was greater than the quality target (8.33%), and the cumulative CV of high and low levels were 4.12% and 6.25%. Conclusion:The PBRTQC EWMA method can monitor the patient data - in real-time and continuous way. It can also dynamically identify and provide early indication of small changes in analytical performance during the analysis process, and can be used as a supplement to quality control products to improve the efficacy of laboratory quality management.

Objective To explore the correlation among P16INK4a expression,human papilloma virus(HPV)infection,and cervical intraepithelial neoplasia(CIN).Methods A total of 197 patients with CIN who visited our hospital between February 2020 and May 2023 were selected,including 62 with CIN1,89 with CIN2,and 46 with CIN3.At the same time,50 patients who underwent total hyste-rectomy and had normal cervical tissue confirmed by postoperative pathology were selected as the control group.P16INK4a expression and HPV infection were detected in each patient.Results The positive P16INK4a expression and HPV infection rates of the control group were 10.00% and 0.00%,respectively,significantly lower than those of patients with CIN(72.08% and 45.69%,respectively)(P<0.05).The positive P16INK4a expression rates of patients with CIN2 and CIN3 were 80.90% and 91.30%,respectively,significantly higher than that of patients with CIN1(45.16% )(P<0.05).The HPV infection rate among patients with CIN3 was 63.04%,significantly higher than those of patients with CIN1(33.87% )and CIN2(44.94% )(P<0.05).The positive P16INK4a expression rate of patients with CIN and HPV infec-tion was 93.33%,significantly higher than that of patients with CIN but without HPV infection(54.21% )(P<0.05).The positive P16INK4a expression rate of patients with HPV16/18 infection was 100.00%,significantly higher than that of patients with HPV31/33/53 infection(85.00% )(P<0.05).There was no statistically significant difference in the positive P16INK4a expression rate among patients with CIN by clinical characteristics such as age and body mass index(P>0.05).Conclusion The P16INK4a expression rate among patients with CIN is significantly increased and correlated with lesion degree and HPV infection status.

Objective:To investigate the effects of breast milk to total milk intake ratio during hospitalization on the duration of antibiotic therapy in preterm infants less than 34 weeks of gestation.Methods:Clinical data of preterm infants ( n=1 792) less than 34 gestational weeks were retrospectively collected in 16 hospitals of Jiangsu Province Neonatal-Perinatal Cooperation Network from January 1, 2019, to December 31, 2021. The days of therapy (DOT) were used to evaluate the duration of antibiotic administration. The median DOT was 15.0 d (7.0-27.0 d). The patients were divided into four groups based on the quartiles of DOT: Q 1 (DOT≤7.0 d), Q 2 (7.0 d27.0 d) groups. According to the breast milk intake ratio (breast milk intake to total milk intake during hospitalization×100%), they were also divided into four groups: very-low-ratio breastfeeding group (breast milk intake ratio≤25%), low-ratio breastfeeding group (25%75%). Univariate analysis ( Chi-square test and Kruskal-Wallis rank-sum test) was used to analyze the factors influencing DOT. Spearman correlation analysis and trend Chi-square test were used to explore the relationship between breast milk intake ratio and DOT. After using multiple imputations to address missing data, two models were constructed after adjusting for different factors, and multinomial logistic regression model was applied to evaluate the effects of the breast milk intake ratio on DOT. Finally, sensitivity analysis was conducted to assess the stability of the models. Results:(1) Of the 1 792 preterm infants, there were 507 (28.3%) in the Q 1 group, 422 (23.5%) in the Q 2 group, 438 (24.4%) in the Q 3 group and 425 (23.7%) in the Q 4 group. (2) The median values of DOT in the very-low-ratio, low-ratio, medium-ratio and high-ratio breastfeeding groups were 20.0 d (11.0-31.0 d), 20.0 d (11.0-32.0 d), 13.0 d (6.0-25.8 d) and 10.0 d (4.0-21.0 d), respectively. Compared with the very-low-ratio and low-ratio breastfeeding groups, the medium-ratio and high-ratio breastfeeding groups had shorter DOT (all P<0.05). (3) After adjusting for factors with P<0.1 (prenatal glucocorticoid exposure, antimicrobial use within 24 h before delivery, gestational age at delivery, birth weight, Apgar score≤7 at 1 min, neonatal respiratory distress syndrome, infectious pneumonia and early-onset neonatal sepsis) between the DOT quartile groups, it showed that medium-ratio and high-ratio breastfeeding were protective factors in contrast to very-low-ratio breastfeeding in the Q 2, Q 3 and Q 4 groups as compared with the Q 1 group [Q 2 group: OR=0.50 (95% CI: 0.30-0.85) and OR=0.36 (95% CI: 0.26-0.51); Q 3 group: OR=0.31 (95% CI: 0.18-0.55) and OR=0.20 (95% CI: 0.14-0.29); Q 4 group: OR=0.22 (95% CI: 0.12-0.42) and OR=0.17 (95% CI: 0.12-0.26)]. Conclusion:Breast milk intake accounting for over 50% of total milk intake has a positive impact on reducing DOT in premature infants requiring antibiotics, which suggests that breastfeeding should be actively encouraged.

Objective:In this study, the role of IL-17 in the pathogenesis of idiopathic myositis (IIM) was preliminarily investigated by detecting the expression of IL-17 in the muscle tissues of patients with idiopathic inflammatory myositis (IIM) and normal controls.Methods:Twenty-eight patients (20 in DM group with dermatomyositis and 8 in ASS group with anti-synthase syndrome) who were diagnosed with IIM after muscle biopsy and autoantibody detection in our hospital for the first time from October 2019 to August 2021 were included. Twelve cases with normal muscle tissue matched for age and sex were included as the control group. Western blot and immunohistochemical techniques were used to detect the expression level of IL-17 in muscle tissue, and enzyme-linked immunosorbent assay (ELISA) was used to detect serum IL-6. Mann-Whitney U rank sum test was used to compare the difference of IL-17 expression in muscle tissue between the two groups, and non-parametric test was used for comparison between multiple groups. Chi-square test and Spearman rank correlation analysis were used, and P<0.05 was considered statistically significant. Results:① The expression level of IL-17 in IIM muscle tissue[1.63(1.30, 2.05)pg/ml was higher than that in control group[1.00(0.96, 1.00)pg/ml, and the difference was statistically significant ( Z=-3.52, P<0.001). The difference be-tween DM[1.94(1.58, 2.14)pg/ml] and ASS[1.22(1.04,1.55)pg/ml was statistically significant ( Z=-3.20, P=0.001). ② Compared with healthy control group [4.08(3.01, 5.67)pg/ml, the expression of IL-6 in ⅡM serum[8.88(4.93, 13.64) was high ( Z=-3.01, P=0.003), which was positively correlated with the expression of IL-17 ( r=0.42, P=0.027). ③ The ex-pression of IL-17 in muscle tissue was higher in IIM associated with muscle weakness[1.91(1.56, 2.14) pg/ml vs 1.50(1.04, 2.00)pg/ml] ( Z=-1.38, P=0.020), dysphagia [2.06(1.99, 2.14)pg/ml vs 1.62(1.52, 2.04)pg/ml] ( Z=-2.74, P=0.010) and skin involvement[1.98(1.57, 2.14)pg/ml vs 1.04(0.86, 1.61)pg/ml] ( Z=-3.20, P<0.010), and the differences were statistically significant ( P<0.05). ④IL-17 was positively correlated with Myoact-total activity ( r=0.51, P=0.006), Myoact-muscle symptom ( r=0.45, P=0.016), erythrocyte sedimen tation ( r=0.48, P=0.020), and myoenzyme increase ( r=0.56, P=0.002). Conclusion:IL-17 and IL-6 are synergistically involved in the pathogenesis of IIM, suggesting that IL-17 is the therapeutic target of IIM.

Patient based real time quality control (PBRTQC) is a quality control method that uses the test results of clinical specimens from patients to monitor the analysis performance of the test process in real time and continuously. Although the International Federation of Clinical Chemistry and Laboratory Medicine PBRTQC working group had recommended that this method should be popularized in clinical practice in 2020, there is still certain lagging in cognition, research and application of PBRTQC in domestic clinical laboratories. This paper highlights the research progress, operation categories, clinical application value, domestic standard guidelines, PBRTQC procedure establishment, performance verification, implementation principles, application status and prospects of PBRTQC, so as to promote the recognition, acceptance, reference and wide application of PBRTQC in domestic clinical laboratories.

Objective:To explore the status quo of tolerance level of pediatric nurses, analyze the effect of self-efficacy, social support and coping style on tolerance and analyze its influence path.Methods:From February 2021 to April 2021, a total of 240 pediatric nurses from 3 ClassⅢ Grade A hospitals in Zhengzhou were selected as the research objects by the convenient sampling method. The Tolerance Scale, Self-Efficacy Scale, Social Support Rating Scale and Simple Coping Style Scale were used to investigate. The structural equation model was established using AMOS 22.0 software. A total of 240 questionnaires were distributed in this study, and 229 valid questionnaires were recovered, with an effective recovery rate of 95.42%.Results:The total score of Tolerance Scale of 229 pediatric nurses was (80.37±11.47) . The path analysis model showed that both positive and negative coping could directly affect tolerance, while self-efficacy and subjective support could not only directly affect tolerance, but also affected tolerance of pediatric nurses through mediating effect of positive and negative coping.Conclusions:Pediatric nurses have a high level of endurance. The higher the level of self-efficacy, the stronger the degree of subjective support, and the more positive coping styles, the higher the level of tolerance of pediatric nurses. Therefore, it is suggested that nursing managers should strengthen the training and education of self-efficacy, subjective support and positive coping styles of pediatric nurses, so as to further improve the tolerance level of pediatric nurses and improve the quality of nursing.