Objective To investigate whether lipopolysaccharide (LPS) can induce vascular endothelial cell growth factor (VEGF) expression in microglia regulated by hypoxia inducible factor-1α(HIF-1α). Methods The cultured BV2 cells were divided into four groups:control group, LPS (100 μg/L) simulated group, LPS (100 μg/L)+LPS antagonist (LRS, 200 μg/L) intervened group and LPS (100 μg/L)+HIF-1αinhibitors FM19G11 (10 mmol/L) intervened group. Immunofluorescence staining, Western blotting and ELISA were used to detect the expressions of VEGF and HIF-1α. Results Compared with the control group, the VEGF expression level was obvious high in LPS simulated group (P<0.05). LRS inhibited this effect of LPS (P<0.05). The HIF-1αlevel was increased in LPS simulated group at 8 h post-injury (P<0.05). FM19G11, the inhibitor of HIF-1αreduced the expression of VEGF induced by LPS (P<0.05). Conclusion LPS can up-regulate the expression of VEGF by HIF-1α.

In order to construct a novel multifunctional targeting nano-carrier based on pH-redox characteristics of tumor microenvironment,ketone bonds and disulfide bonds were bonded to the oligomeric hyaluronic acid (oHA) being sensitive to pH and the reduction environment.The chemical structure of oligomeric hyaluronic acid-8-mercaptomenthone 1,2-glycerolketal (oHMST) was characterized by 1H NMR,IR and ESI-MS.Curcuminloaded micelles were prepared by dialysis.The single factor investigation was carried out on the dosage form.Some properties,including particle size zeta potential,the morphology of micelles,and pH-sensitivity were studied.The materials were synthesized successfully.The micelles were spheric with a diameter of about 100 nm.The Zeta potential of the micelles was-(21.97 ± 1.08) mV.The in vitro test showed that oHMST carriers have good pH-sensitivity and redox-sensitivity.

Objective:To analyze the risk factors of stress perception in patients with systemic lupus erythematosus (SLE) , and construct and validate a risk prediction model for health risk stress perception in SLE patients.Methods:This study is a cross-sectional study. From October 2020 to March 2021, totals of 310 SLE inpatients and outpatients in the Department of Rheumatology and Immunology from 4 general hospitals in Anhui Province were selected as the modeling object. According to the patients' stress perception score, they were divided into the group with health risk stress ( n=132) and the group without health risk stress ( n=178) . The general data, SLE disease activity, general self-efficacy, emotional intelligence, resilience, sleep disturbance, anxiety, depression were compared between the two groups, and independent risk factors were screened out and Logistic regression was used to construct a risk prediction model. Hosmer-Lemeshow and receiver operator characteristic curve (ROC) area were used to test the fit and prediction effect of the model, respectively, and 206 patients were included for model validation. Results:Binary Logistic regression analysis showed that SLE disease activity, resilience, anxiety, payment type, and family monthly income were the influencing factors of stress perception in SLE patients, and the difference was statistically significant ( P<0.05) . Hosmer-Lemeshow fit test showed χ 2=6.123, P=0.633. Besides, the area under the ROC, maximum Youden index, predictive critical value, sensitivity and specificity were 0.903, 0.660, 0.497, 0.795 and 0.865 respectively. Conclusions:This study is based on five independent risk factors of SLE patients' stress perception, namely SLE disease activity, resilience, anxiety, payment type, and family monthly income. The risk prediction model has good sensitivity and specificity, which can provide a reference for clinical assessment of health risk stress perception in SLE patients.

Objective:To investigate the relationship between non-alcoholic fatty liver disease(NAFLD) and hepatic fibrosis and skeletal muscle mass in patients with type 2 diabetes mellitus(T2DM).Methods:A total of 685 T2DM patients diagnosed at the Endocrinology department of Lanzhou University First Hospital, from April 2022 to May 2023, were divided into NAFLD and Non-NAFLD groups, and the NAFLD group was further categorized into fibrosis and non-fibrosis based on aspartate aminotransferase(AST) /alanine aminotransferase(ALT) level. The differences in appendicular skeletal muscle mass(ASM), appendicular skeletal muscle mass index(ASMI), and the prevalence of muscle mass loss were compared across groups. The correlations between ASMI and NAFLD, as well as liver fibrosis were analyzed by binary logistic regression.Results:Among male T2DM patients, those with NAFLD had lower ASMI levels and a higher prevalence of muscle mass reduction compared to non-NAFLD group. Among female T2DM patients, those with NAFLD had lower levels of ASM and ASMI, and a higher prevalence of muscle mass reduction compared to non-NAFLD group. ASMI levels in both male and female T2DM patients were independently negatively correlated with NAFLD risk( OR=-0.696, 95% CI 0.579-0.837; OR=-0.757, 95% CI 0.629-0.911). In NAFLD patients, ASM and ASMI levels were lower in those with liver fibrosis compared to those without fibrosis; however, the prevalence of muscle mass reduction did not differ significantly. Among male NAFLD patients, ASMI levels were independently negatively correlated with the risk of liver fibrosis( OR=-0.726, 95% CI 0.537-0.983), while no correlation was found in female patients. Conclusion:Reduced muscle mass is independently associated with the risk of NAFLD in both male and female T2DM patients. In males, reduced muscle mass is also independently related to the risk of liver fibrosis.

Objective:To compare the differences in surgical safety and postoperative cosmetic effects between endoscopic nipple-sparing mastectomy with immediate prepectoral prosthesis breast reconstruction and conventional nipple-sparing mastectomy with immediate subpectoral prosthesis breast reconstruction.Methods:The clinical data of early breast cancer patients admitted to the Department of Breast Surgery of Peking University Peoples Hospital from Oct 1, 2022 to Sep 13, 2023 was retrospectively analyzed.Results:According to the surgical method, the patients were divided into endoscopic surgery group (30 cases) and traditional surgery group (46 cases). There were no significant differences in the basic clinicopathological data, and the number of sentinel lymph nodes taken and axillary lymph nodes dissected between the patients in two groups (all P>0.05). Compared with that in traditional surgery group, the patients in endoscopic surgery group had longer operation time and more wound drainage volumes 3 days after surgery (all P<0.05). There was no significant differences in the probability of postoperative complications between the patients in two groups (all P>0.05), however, the proportion of nipple-areola complex necrosis in patients of endoscopic surgery group (10.0%) was lower than that of traditional surgery group (26.1%). Conclusions:The single-port insufflation technique-assisted endoscopic nipple-sparing mastectomy with immediate prepectoral prosthesis breast reconstruction maximize the cosmetic effect. Under the premise of strict selection of indications, it can be an optional surgical method.

ObjectiveTo explore the possible mechanisms of Shoutai Wan （寿胎丸） in treating recurrent miscarriage （RSA） from the perspective of immune tolerance under the acidic microenvironment at the maternal-fetal interface. MethodsFemale CBA/J mice were randomly divided into normal group， model group， progesterone group， and Shoutai Wan group， with 15 mice in each group. The mice in the normal group and model group were given 0.2 ml distilled water by gavage each day， the Shoutai Wan group given Shoutai Wan decoction 0.15 g/（10 g·d） by gavage， the progesterone group given progesterone tablets 0.44 mg/（10 g·d） by gavage. After gavage for 14 days， the mice were cohabited. Female CBA/J mice in the normal group were mated with male BALB/c mice at a ratio of 2∶1， and female CBA/J mice in the other groups were mated with male DBA/2 mice at a ratio of 2∶1 to establish the RSA mouse model. Vaginal smears were taken from the female mice the next morning， and the appearance of a large number of spermatozoa and the presence of a vaginal plug were considered as the first day of pregnancy. After the appearance of the plug， the mice were continued to be administered according to the previous method until the 10th day of pregnancy. On the 10th day of pregnancy， maternal-fetal interface tissues were collected from each group of mice， and lactate dehydrogenase colorimetric method was used to detect lactate （LA） content； qPCR method and Western blot method were used to detect the expression of immune-related factors interleukin-4 （IL-4）， interferon-gamma （IFN-γ）， transforming growth factor beta 1 （TGF-β1）， and forkhead box protein 3 （Foxp3） mRNA and protein； flow cytometry was used to detect the numbers of helper T lymphocyte 1 （Th1）， helper T lymphocyte 2 （Th2）， regulatory T cell （Treg）， classical macrophage （M1）， and alternative macrophage （M2）. The bivariate Pearson test was used to analyze the correlation between LA content and the numbers of Th1， Th2， Treg， M1， and M2 cells， as well as the correlation between LA content and the expression of IL-4， IFN-γ， TGF-β1， Foxp3 protein， and mRNA. ResultsOn the 10th day of pregnancy， compared with the normal group， the LA content decreased in the model group， and the expression of IL-4， TGF-β1， Foxp3 protein and mRNA in the maternal-fetal interface tissues decreased， while the expression of IFN-γ protein and mRNA increased. The numbers of Th1 and M1 cells increased， while the numbers of Th2， Treg， and M2 cells decreased （P＜0.05 or P＜0.01）. Compared with the model group， the LA content increased in the Shoutai Wan group and progesterone group. The expression of IL-4， TGF-β1， Foxp3 protein and mRNA in the maternal-fetal interface tissues increased， while the expression of IFN-γ protein and mRNA decreased. The numbers of Th1 and M1 cells decreased， while the numbers of Th2， Treg， and M2 cells increased （P＜0.05 or P＜0.01）. The LA content was positively correlated with the numbers of Th2， Treg， and M2 cells， and the expression of IL-4， TGF-β1， Foxp3 protein， and mRNA （P＜0.05 or P＜0.01）； the LA content was negatively correlated with the numbers of Th1， M1 cells， and the expression of IFN-γ protein and mRNA （P＜0.05 or P＜0.01）. ConclusionShoutai Wan may improve immune tolerance by regulating the expression of immune-related factors in the acidic microenvironment at the maternal-fetal interface of RSA model mice， thereby exerting its role in preventing miscarriage.