Triple-negative breast cancer (TNBC) remains a refractory subtype of breast cancer due to its resistance to various therapeutic strategies. In this study, we introduce a "brake-release and accelerator-pressing" approach to engineer a microneedle patch embedded with copper-doped Prussian blue nanoparticles (Cu-PB) and the ferroptosis inducer sorafenib (SRF) for raised chemodynamic (CDT)/photothermal (PTT) combination therapy against TNBC. Upon transdermal insertion, the dissolving microneedles swiftly disintegrate and facilitate the release of SRF. Under gentle external light exposure, copper ions (Cu²⁺) and iron ions (Fe³⁺) were liberated from Cu-PB. The direct chelation of Cu²⁺ and the indirect suppression by SRF, collectively attenuate glutathione peroxidase 4 (GPX4) enzymatic function, destabilizing the cellular redox equilibrium (referred to as the "brake-release" strategy). The release of Cu²⁺ and Fe³⁺ ions instigates a Fenton/Fenton-like reaction within tumor cells, further yielding hydroxyl radicals and elevating reactive oxygen species (ROS) concentrations (referred to as the "accelerator-pressing" strategy). This overwhelming ROS accumulation, coupled with the impaired clearance of resultant lipid peroxides (LPO), ultimately triggers a robust ferroptosis cell death response. In summary, this study presents an innovative combinatorial therapeutic strategy based on dual-ferroptosis induction for TNBC, implying a promising therapeutic platform for developing ferroptosis-centered treatments for this aggressive breast cancer subtype.

Poly(ADP-ribosyl)ation (PARylation) is a specific form of post-translational modification (PTM) predominantly triggered by the activation of poly-ADP-ribose polymerase 1 (PARP1). However, the role and mechanism of PARylation in the advancement of acute kidney injury (AKI) remain undetermined. Here, we demonstrated the significant upregulation of PARP1 and its associated PARylation in murine models of AKI, consistent with renal biopsy findings in patients with AKI. This elevation in PARP1 expression might be attributed to trimethylation of histone H3 lysine 4 (H3K4me3). Furthermore, a reduction in PARylation levels mitigated renal dysfunction in the AKI mouse models. Mechanistically, liquid chromatography-mass spectrometry indicated that PARylation mainly occurred in receptor for activated C kinase 1 (RACK1), thereby facilitating its subsequent phosphorylation. Moreover, the phosphorylation of RACK1 enhanced its dimerization and accelerated the ubiquitination-mediated hypoxia inducible factor-1α (HIF-1α) degradation, thereby exacerbating kidney injury. Additionally, we identified a PARP1 proteolysis-targeting chimera (PROTAC), A19, as a PARP1 degrader that demonstrated superior protective effects against renal injury compared with PJ34, a previously identified PARP1 inhibitor. Collectively, both genetic and drug-based inhibition of PARylation mitigated kidney injury, indicating that the PARylated RACK1/HIF-1α axis could be a promising therapeutic target for AKI treatment.

Pelvic organ prolapse (POP), whose etiology is influenced by genetic and clinical risk factors, considerably impacts women's quality of life. However, the genetic underpinnings in non-European populations and comprehensive risk models integrating genetic and clinical factors remain underexplored. This study constructed the first polygenic risk score (PRS) for POP in the Chinese population by utilizing 20 disease-associated variants from the largest existing genome-wide association study. We analyzed a discovery cohort of 576 cases and 623 controls and a validation cohort of 264 cases and 200 controls. Results showed that the case group exhibited a significantly higher PRS than the control group. Moreover, the odds ratio of the top 10% risk group was 2.6 times higher than that of the bottom 10%. A high PRS was significantly correlated with POP occurrence in women older than 50 years old and in those with one or no childbirths. As far as we know, the integrated prediction model, which combined PRS and clinical risk factors, demonstrated better predictive accuracy than other existing PRS models. This combined risk assessment model serves as a robust tool for POP risk prediction and stratification, thereby offering insights into individualized preventive measures and treatment strategies in future clinical practice.
Humans ; Female ; Pelvic Organ Prolapse/epidemiology* ; Middle Aged ; Risk Assessment/methods* ; China/epidemiology* ; Multifactorial Inheritance ; Aged ; Risk Factors ; Genome-Wide Association Study ; Genetic Predisposition to Disease ; Case-Control Studies ; Adult ; Polymorphism, Single Nucleotide ; Genetic Risk Score ; East Asian People

ObjectiveTo establish a polymerase chain reaction-restriction fragment length polymorphism （PCR-RFLP） method for rapid distinguishing Periplocae Cortex from Acanthopanacis Cortex and Lycii Cortex， so as to avoid the influence of genetic confusion on drug safety. MethodThe DSS-tagged sequences of Periplocae Cortex were obtained from the Chloroplast Genome Information Resource （CGIR） and analyzed to find the enzymatic cleavage sites that were different from those of Acanthopanacis Cortex and Lycii Cortex. The specific enzymatic cleavage site， Cla I， of Periplocae Cortex was selected， on the basis of which the primers for PCR-RFLP were designed. Furthermore， the factors such as annealing temperature， number of cycles， Taq enzyme， PCR instruments， and enzymatic treatment time that may influence PCR-RFLP were studied. The established PCR-RFLP method was applied to the identification of Periplocae Cortex， Acanthopanacis Cortex， and Lycii Cortex samples produced in different regions. ResultThe PCR-RFLP at the annealing temperature of 59 ℃ and with 40 cycles showed clear bands of the samples. When the enzyme digestion time was 30 min. The reaction produced the target bands at about 140 bp and 290 bp for both Periplocae Cortex and its original plant and only a band at about 430 bp for Acanthopanacis Cortex， Lycii Cortex， and their original plants. The method can accurately distinguish Periplocae Cortex from its confounders Acanthopanacis Cortex and Lycii Cortex. ConclusionThe PCR-RFLP method for distinguishing Periplocae Cortex from Acanthopanacis Cortex and Lycii Cortex was established. It has high stability， sensitivity， and applicability， providing a reference for the quality control of Periplocae Cortex， Acanthopanacis Cortex， and Lycii Cortex.

Objective:To investigate the effect and mechanism of Grifola frondosa extract on inflammatory response of colon tissue in rats with ulcerative colitis(UC)by regulating interleukin-6(IL-6)/Janus kinase 2(JAK2)/signal transducer and activator of transcription 3(STAT3)signaling pathway.Methods:Forty SD rats were randomly divided into blank control group,UC model group,Grifola frondosa treatment group,western medicine treatment group and combined treatment group,with 8 rats in each group.After UC rats were established by free drinking 3%DSS for 7 days,the treatment group were given Grifola frondosa extract 10 mg/(kg·d),sulfasalazine 0.3 g/(kg·d),and the same amount of two drugs,for 14 consecutive days.During the experiment,general state of rats were observed,and the disease activity index(DAI)score was calculated;pathological changes of rats colon tissue were observed by HE staining;protein expression levels of IL-6,JAK2,STAT3 and p-STAT3 in rats colon tissue were detected by Western blot;content of IL-6 in rats serum was detected by ELISA;protein contents and expressions of IL-6R and MPO in rats colon tissue were determined by immunohistochemistry.Results:Compared with blank control group,general state of rats in UC model group was poor,DAI score was increased,obvious tissue mucosal defects and inflammatory cell infiltration were observed by HE staining;protein expression levels of IL-6,JAK2,STAT3 and p-STAT3 in rats colon tissue and contents of IL-6R and MPO were significantly increased(P<0.01);content of IL-6 in rats serum was significantly increased(P<0.01),the difference was statistically significant.Compared with UC model group,general condition of rats in each treatment group was improved,DAI score was decreased,HE staining showed that mucosal defects were improved to varying degrees,and occasionally inflammatory cell infiltration was observed;protein expression levels of IL-6,JAK2,STAT3 and p-STAT3 in colon tissue were significantly decreased(P<0.01),contents of IL-6R and MPO in colon tissue and content of IL-6 in serum were significantly decreased(P<0.01 or P<0.05),the differences were statistically significant.Conclusion:Grifola frondosa extract can reduce the inflammatory response in colon tissue of UC rats by regulating expressions of IL-6/JAK2/STAT3 signaling pathway related factors.

Precancerous lesions of gastric cancer is a key stage in the development of gastric cancer.The reprogramming of glucose metabolism is a prominent feature of precancerous lesions of gastric cancer.Hypoxic microenvironment and hypoxia-inducible factors are important factors influencing the occurrence of glucose metabolic reprogramming.This article summarized the relationship between hypoxic microenvironment and the reprogramming of glucose metabolism in precancerous lesions of gastric cancer,and concluded the relevant research on TCM compounds and effective components to improve hypoxic microenvironment and further regulate glycolysis for the treatment of this disease.It was concluded that the mechanism may be the inhibition of angiogenesis,regulation of signaling pathways and key proteins of glycolysis,expression of multiple enzymes,reduction of lactate secretion,inhibition of cell malignant proliferation and invasion.It explored the mechanism of Chinese materia medica in improving hypoxic microenvironment and regulating glycolysis,so as to provide reference for the prevention and treatment of precancerous lesions of gastric cancer.

Objective:To observe the efficacy of cosmetic suturing techniques combined with topical recombinant human basic fibroblast growth factor (rh-bFGF) in repairing facial trauma.Methods:A prospective study was conducted on 140 patients with facial trauma admitted to the Department of Burn and Plastic Surgery, Northern Jiangsu People＇s Hospital from January to December 2022. Patients were divided into two groups based on different treatment methods using a random number table method: treatment group (70 cases), including 38 males and 32 females aged 3 to 54 (23.1±8.2) years, received cosmetic suturing techniques combined with topical rh-bFGF for wound repair; control group (70 cases), including 36 males and 34 females aged 2 to 49 (22.3±7.5) years, only received cosmetic suturing techniques for wound repair. Patients were followed up 2 weeks post-surgery to evaluate wound healing quality. Patient satisfaction was assessed using the visual analogue scale (VAS). Six months post-surgery, scar conditions were evaluated using the Vancouver scar scale (VSS).Results:In the treatment group, 65 cases were directly sutured, and 5 cases were repaired with skin flaps, with a first-class healing rate of 100% (70/70). In the control group, 66 cases were directly sutured, and 4 cases were repaired with skin flaps, with a first-class healing rate of 91.4% (64/70). The first-class healing rate in the treatment group was higher than that in the control group, with a statistically significant difference ( P=0.037). Two weeks post-surgery, the VAS score for surgical satisfaction in the treatment group was (1.13±0.52) scores, which was lower than that in the control group (2.56±1.32) scores, with a statistically significant difference ( P<0.001). Six months post-surgery, the VSS score for the treatment group was (2.49±1.27) scores, which was lower than that in the control group (4.67±1.93) scores, with a statistically significant difference ( P<0.001). Conclusions:In repairing facial trauma, the combination of cosmetic suturing techniques and topical rh-bFGF can improve wound healing quality, reduce wound scarring, and enhance patient satisfaction with surgery.

Objective:To analyze the relationship between plasma D-dimer level and cancer-related fatigue and quality of life in patients with lung cancer after chemotherapy.Methods:A cross-sectional study was conducted involving 58 patients with stage ⅠB-ⅢA lung cancer who received chemotherapy at The First Hospital of Anhui University of Science and Technology from January 2020 to December 2023. These patients comprised the observation group. The control group consisted of 41 patients diagnosed with lung cancer who had completed adjuvant chemotherapy and entered the follow-up stage. The plasma D-dimer level in the observation group was monitored before and after four cycles of postoperative adjuvant chemotherapy. The plasma D-dimer level in the control group was monitored before and after 3 months of follow-up. The Chinese version of the Cancer Fatigue Scale and the Chinese version of the Functional Assessment of Cancer Therapy-Lung (FACT-L) were used to evaluate cancer-related fatigue levels and quality of life in both groups. Pearson correlation analysis was performed to assess the relationship between plasma D-dimer levels and cancer-related fatigue and quality of life.Results:After four cycles of chemotherapy and 3 months of follow-up, the plasma D-dimer level in the observation group was significantly higher than that in the control group [(1.17 ± 0.32) mg/L vs. (0.66 ± 0.29) mg/L, t = -8.26, P < 0.001]. The score of the Chinese version of the FACT-L in the observation group was significantly higher than that in the control group [(79.82 ± 9.74) points vs. (67.49 ± 8.12) points, t = -6.85, P < 0.001]. The scores for tumor-related symptoms, physiological status, social/family status, functional status, and emotional status in the FACT-L for the observation group were (21.26 ± 3.17) points, (14.37 ± 2.24) points, (22.63 ± 3.48) points, (11.53 ± 2.13) points, and (14.79 ± 2.73) points, which were significantly lower than those in the control group [(22.42 ± 3.31) points, (17.65 ± 2.64) points, (25.12 ± 3.39) points, (16.34 ± 2.68) points, (16.37 ± 2.76) points, t = 3.26, 6.48, 3.56, 3.60, 2.82, all P < 0.05]. Pearson correlation analysis revealed that the plasma D-dimer level was positively correlated with the cancer-related fatigue score ( r = 0.367, P < 0.001) and negatively correlated with the total FACT-L score ( r = -0.334, P < 0.001). Conclusion:In patients with stage ⅠB-ⅢA lung cancer after surgery, changes in plasma D-dimer levels during adjuvant chemotherapy are associated with the degree of cancer-related fatigue and affect quality of life. Therefore, monitoring plasma D-dimer levels can provide important reference value for assessing the outcome of chemotherapy and guiding clinical treatment.

Objective To monitor the susceptibility of clinical isolates to antimicrobial agents in tertiary hospitals in major regions of China in 2022.Methods Clinical isolates from 58 hospitals in China were tested for antimicrobial susceptibility using a unified protocol based on disc diffusion method or automated testing systems.Results were interpreted using the 2022 Clinical &Laboratory Standards Institute(CLSI)breakpoints.Results A total of 318 013 clinical isolates were collected from January 1,2022 to December 31,2022,of which 29.5％were gram-positive and 70.5％were gram-negative.The prevalence of methicillin-resistant strains in Staphylococcus aureus,Staphylococcus epidermidis and other coagulase-negative Staphylococcus species(excluding Staphylococcus pseudintermedius and Staphylococcus schleiferi)was 28.3％,76.7％and 77.9％,respectively.Overall,94.0％of MRSA strains were susceptible to trimethoprim-sulfamethoxazole and 90.8％of MRSE strains were susceptible to rifampicin.No vancomycin-resistant strains were found.Enterococcus faecalis showed significantly lower resistance rates to most antimicrobial agents tested than Enterococcus faecium.A few vancomycin-resistant strains were identified in both E.faecalis and E.faecium.The prevalence of penicillin-susceptible Streptococcus pneumoniae was 94.2％in the isolates from children and 95.7％in the isolates from adults.The resistance rate to carbapenems was lower than 13.1％in most Enterobacterales species except for Klebsiella,21.7％-23.1％of which were resistant to carbapenems.Most Enterobacterales isolates were highly susceptible to tigecycline,colistin and polymyxin B,with resistance rates ranging from 0.1％to 13.3％.The prevalence of meropenem-resistant strains decreased from 23.5％in 2019 to 18.0％in 2022 in Pseudomonas aeruginosa,and decreased from 79.0％in 2019 to 72.5％in 2022 in Acinetobacter baumannii.Conclusions The resistance of clinical isolates to the commonly used antimicrobial agents is still increasing in tertiary hospitals.However,the prevalence of important carbapenem-resistant organisms such as carbapenem-resistant K.pneumoniae,P.aeruginosa,and A.baumannii showed a downward trend in recent years.This finding suggests that the strategy of combining antimicrobial resistance surveillance with multidisciplinary concerted action works well in curbing the spread of resistant bacteria.

Objective:To investigate the effects of Schisandrin A on the proliferation and apoptosis of prostate cancer cell and its mechanism.Methods:Human prostate cancer DU145 cell were cultured in vitro and grouped into DU145 group (normal culture), Schisandrin A L group (50 μmol/L Schisandrin A was added), Schisandrin A M group (100 μmol/L Schisandrin A was added), Schisandrin A H group (150 μmol/L Schisandrin A was added) and Simvastatin group (50 μmol/L Simvastatin was added). Cell morphology of each group was observed under microscope, cell proliferation ability was detected by CCK8 method, cell migration ability was detected by cell scratch assay, cell invasion ability was detected by Transwell assay, and cell apoptosis was detected by flow cytometry, the expression of phosphorylation (p) - mammalian STE20-like protein kinase 1 (MST1), MST1, p-large tumor suppressor 1 (LATS1), LATS1, p-Yes associated protein (YAP) and YAP protein were detected by Western blotting. Measurement data were expressed as mean± standard deviation ( ± s), one-way ANOVA for comparisons between multiple groups, and t-test for comparisons between two groups. Results:Compared with DU145 group, the number of cells in Schisandrin A L, M, H groups and Simvastatin group decreased, and the cells gradually shrunk and the spacing became larger, the cell survival rate [(100.00±0.00)%, (88.41±9.36)%, (62.34±7.31)%, (42.57±5.01)%, (45.47±5.65)%], migration [(90.11±13.43)%, (74.16±8.08)%, (57.53±7.34)%, (41.34±6.79)%, (43.44±5.26)%] and invasion [(89.01±10.31)%, (73.11±9.23)%, (55.62±7.67)%, (41.13±6.35)%, (40.36±5.68)%], and the expression of p-YAP/YAP protein (0.98±0.08, 0.83±0.11, 0.69±0.07, 0.55±0.07, 0.53±0.05) were significantly decreased, the apoptosis rate [(2.88±0.34)%, (5.20±0.57)%, (8.37±0.94)%, (12.71±1.58)%, (12.03±2.21)%] and the expression of p-MST1/MST1 (0.41±0.04, 0.53±0.07, 0.75±0.07, 0.89±0.08, 0.88±0.07] and p-LATS1/LATS1 protein (0.40±0.04, 0.52±0.06, 0.64±0.06, 0.77±0.08, 0.79±0.08) were significantly increased, and the differences were statistically significant ( P<0.05). Conclusion:Schisandrin A may inhibit the proliferation of prostate cancer cell and promote cell apoptosis by inhibiting Hippo-YAP signaling pathway.