Objective To explore the diagnostic value of hemodynamic and morphological characteristics based on four-dimensional flow magnetic resonance imaging(4D Flow MRI)for unstable saccular intracranial aneurysms(IAs).Methods Seventy-four patients with saccular unruptured intracranial aneurysms(UIAs)who underwent 4D Flow MRI examinations were selected.Morphological and hemodynamic data of the IAs were collected and followed up.According to the follow-up results,patients were divided into stable group and unstable group.Logistic regression analysis was used to identify factors associated with the unstable group,and the diag-nostic performance of the model was evaluated using the receiver operating characteristic(ROC)curves and the area under the curve(AUC).Results The aneurysm diameter,height,width,neck width,and aspect ratio(AR)value in the unstable group were greater than those in the stable group.The wall shear stress(WSS)at the aneurysm neck and the parent artery inflow,as well as the end diastolic velocity(EDV)at the parent artery inflow,were lower in the unstable group than those in the stable group(P＜0.05).Multivariate logistic regression analysis showed that the AR and WSS at the aneurysm neck were independent predictors of unstable IAs(P＜0.05).The combined model of WSS at the aneurysm neck and AR showed an AUC of 0.742[95％confidence interval(CI)0.608-0.875],repre-sented the highest diagnostic performance.Conclusion The hemodynamic characteristics quantified by 4D Flow MRI offer supple-mentary information for risk assessment of IAs.Combining hemodynamic and morphological characteristics is of significant value in identi-fying unstable saccular IAs.

Objective To explore the diagnostic value of hemodynamic and morphological characteristics based on four-dimensional flow magnetic resonance imaging(4D Flow MRI)for unstable saccular intracranial aneurysms(IAs).Methods Seventy-four patients with saccular unruptured intracranial aneurysms(UIAs)who underwent 4D Flow MRI examinations were selected.Morphological and hemodynamic data of the IAs were collected and followed up.According to the follow-up results,patients were divided into stable group and unstable group.Logistic regression analysis was used to identify factors associated with the unstable group,and the diag-nostic performance of the model was evaluated using the receiver operating characteristic(ROC)curves and the area under the curve(AUC).Results The aneurysm diameter,height,width,neck width,and aspect ratio(AR)value in the unstable group were greater than those in the stable group.The wall shear stress(WSS)at the aneurysm neck and the parent artery inflow,as well as the end diastolic velocity(EDV)at the parent artery inflow,were lower in the unstable group than those in the stable group(P＜0.05).Multivariate logistic regression analysis showed that the AR and WSS at the aneurysm neck were independent predictors of unstable IAs(P＜0.05).The combined model of WSS at the aneurysm neck and AR showed an AUC of 0.742[95％confidence interval(CI)0.608-0.875],repre-sented the highest diagnostic performance.Conclusion The hemodynamic characteristics quantified by 4D Flow MRI offer supple-mentary information for risk assessment of IAs.Combining hemodynamic and morphological characteristics is of significant value in identi-fying unstable saccular IAs.

Objective To investigate the effects of periodontitis induced by Prevotella nigrescens(Pn)combined with ligation on cognitive functions in mice.Methods Twenty-four C57BL/6J mice were randomly divided into control group,ligation group,and ligation+Pn treatment(P+Pn)group.Experimental periodontitis was induced by silk ligation of the first molars followed by topical application of Pn for 6 weeks.After modeling,alveolar bone resorption was assessed using micro-CT and histological analysis.Learning and memory abilities of the mice were evaluated using open field test(OFT),novel object recognition test(NORT),and Morris water maze test(MWM).Seven weeks after the start of modeling,the mice were sacrificed for examining histopathological changes in the hippocampus using HE and Nissl staining.Results After 6 weeks of molar ligation,micro-CT revealed horizontal alveolar bone resorption and furcation exposure in the mice,and histological analysis showed apical migration of the junctional epithelium,epithelial ridge hyperplasia,and lymphocyte infiltration,and these changes were obviously worsened in P+Pn group.Alveolar bone height decreased significantly in both ligation groups compared to the control group.Cognitive tests showed that the mice in both of the ligation groups traveled shorter distances in OFT,showed reduced novel object preference in NORT,and exhibited longer escape latencies in MWM,and the mice in P+Pn group had significantly poorer performances in the tests.Histologically,obvious neuronal cytoplasmic degeneration,necrosis,nuclear pyknosis,vacuolation,and reduced Nissl bodies and viable neurons were observed in the hippocampal regions of the mice in the two ligation groups.Conclusion Pn infection aggravates alveolar bone destruction,accelerates necrosis and causes morphological abnormalities of neuronal cells in the hippocampus to reduce cognitive functions of mice with periodontitis.

OBJECTIVES: To investigate the effects of periodontitis induced by Prevotella nigrescens (Pn) combined with ligation on cognitive functions in mice. METHODS: Twenty-four C57BL/6J mice were randomly divided into control group, ligation group, and ligation + Pn treatment (P+Pn) group. Experimental periodontitis was induced by silk ligation of the first molars followed by topical application of Pn for 6 weeks. After modeling, alveolar bone resorption was assessed using micro-CT and histological analysis. Learning and memory abilities of the mice were evaluated using open field test (OFT), novel object recognition test (NORT), and Morris water maze test (MWM). Seven weeks after the start of modeling, the mice were sacrificed for examining histopathological changes in the hippocampus using HE and Nissl staining. RESULTS: After 6 weeks of molar ligation, micro-CT revealed horizontal alveolar bone resorption and furcation exposure in the mice, and histological analysis showed apical migration of the junctional epithelium, epithelial ridge hyperplasia, and lymphocyte infiltration, and these changes were obviously worsened in P+Pn group. Alveolar bone height decreased significantly in both ligation groups compared to the control group. Cognitive tests showed that the mice in both of the ligation groups traveled shorter distances in OFT, showed reduced novel object preference in NORT, and exhibited longer escape latencies in MWM, and the mice in P+Pn group had significantly poorer performances in the tests. Histologically, obvious neuronal cytoplasmic degeneration, necrosis, nuclear pyknosis, vacuolation, and reduced Nissl bodies and viable neurons were observed in the hippocampal regions of the mice in the two ligation groups. CONCLUSIONS Pn infection aggravates alveolar bone destruction, accelerates necrosis and causes morphological abnormalities of neuronal cells in the hippocampus to reduce cognitive functions of mice with periodontitis.
Animals ; Periodontitis/microbiology* ; Mice ; Mice, Inbred C57BL ; Cognition ; Alveolar Bone Loss ; Hippocampus/pathology* ; Male ; Inflammation ; Maze Learning

This paper introduces the academic characteristics of Professor ZHANG Ren in treatment with acupuncture for refractory eye diseases in modern times, guided by "homotherapy for heteropathy" (same therapy for different diseases sharing the same pathogenesis). The refractory eye diseases in modern times include a variety of conditions such as glaucoma, macular degeneration, diabetic retinopathy, high myopia and its complications, dry eye, cortical visual impairment and genetic eye diseases. The same therapy is used because these diseases share the similar location and pathogenesis. Professor ZHANG optimizes the methods of acupoint selection and provides the comprehensive prescriptions, "basic prescription, prescription based on disease differentiation, and supplementary prescription". A variety of acupuncture manipulation techniques are operated in clinical practice, such as compound needling methods, penetration needling, manipulations for promoting qi movement and conducting qi flow. "Early, regular and persistent" treatment is the common requirement with "the same acupoints, the same prescription and the same acupuncture method" as well as at "the same time". It is also proposed that the treatment should be provided flexibly according to the different symptoms, "identifying the differences within similarities".
Acupuncture Therapy/methods* ; Humans ; Eye Diseases/history* ; Acupuncture Points ; History, 20th Century ; China ; History, 21st Century

Objective To explore the relationship between the variability of blood pressure and the occurrence of acute kidney injury(AKI)in patients with hypovolemic shock so as to provide a theoretical basis for early prediction and prevention of AKI.Methods Clinical data of 661 critically ill patients with hypovolemic shock were acquired from the Medical Information Mart for Intensive Care Ⅳ(MIMIC-Ⅳ)database from 2008 to 2022.Data were grouped with the quartile division method,with systolic blood pressure average real variability(SBP-ARV)and diastolic blood pressure average real variability(DBP-ARV)as the continuous or categorical variables.Univariate and multivariate logistic regression analyses were used to examine the relationships of SBP-ARV and DBP-ARV with the occurrence of AKI.Additionally,the relationship between SBP-ARV and the occurrence of AKI was further investigated in subgroups of gender,age,sequential organ failure assessment(SOFA),hypertension,diabetes,and the use of vasopressors after correction of all covariates.Results Logistic regression analysis showed that SBP-ARV,a continuous variable,was independently associated with the occurrence of AKI[OR(95%CI):1.05(1.01～1.10),P=0.024].However,DBP-ARV was not significantly related to the occurrence of AKI.When SBP-ARV was grouped by quartile division,Q4 group had a significantly higher risk of AKI[OR(95%CI):1.83(1.04～3.22),P=0.037]compared with that of Q1 group.Analyses across the subgroups revealed that there was an interaction between SBP-ARV and diabetes(P=0.033).Conclusion For ICU patients with hypovolemic shock,SBP-ARV positively associates with the occurrence of AKI.

OBJECTIVE To explore the construction of the physical identification model of twenty-five people of yin and yang by combining the hand diagnosis image analysis of machine learning,in order to enrich the input of physical identification features.METHODS Based on the theory of twenty-five people of yin and yang,the hand images of 542 patients with cardiovascular disease were collected by self-developed hand diagnosis acquisition equipment.The key points of the hand were extracted by the Mediapipe palm key point algorithm,and the palm area was segmented by geometry to obtain the length and color gamut characteristics of different parts.The physician with clinical license was used to determined the patient's yin and yang twenty-five constitution according to the e-lectronic medical record,and the patient's constitution was identified by comparing Random Forest,Logistic Regression,Xgboost algo-rithm and Light GBM.RESULTS This study successfully constructed a TCM constitution identification model based on hand charac-teristics,which can identify ten basic constitution types including gold wood,gold fire,gold water,gold soil,wood fire,wood water,wood soil,water fire,water soil and fire soil.After sample equalization,the Random Forest model performed best in physical identifi-cation,with an accuracy rate of 0.69,which was significantly better than other models.CONCLUSION The constitution identifica-tion model of TCM hand diagnosis based on hand characteristics can realize the constitution identification of the five elements of TCM.However,due to the use of only hand diagnosis data of TCM,the accuracy needs to be improved.Compared with the traditional body mass scale,it is more objective,convenient,highly stable and consistent.In the future,multimodal integration with face diagno-sis and whole body inspection can be carried out to promote the accuracy,intelligence and multi-dimensional evaluation ability of TCM constitution identification technology.

OBJECTIVE To obtain stronger cytotoxic activity of panaxadiol derivatives. METHODS The 3-amino panaxadiol was prepared by the bioelectronic isosteric principle, and then 18 derivatives of cinnamic acid, NO donor and other types of panaxadiol derivatives were synthesized, among them, 12 compounds had not been reported in the literature, and their structures had been confirmed by 1H-NMR, 13C-NMR and mass spectrometry. These compounds were evaluated for their cytotoxic activity by MTS assay against human leukemia cell line HL-60, liver cancer cell line SMMC-7721, lung cancer cell line A-549, breast cancer cell line MCF-7, and colon cancer cell line SW480. RESULTS These results showed that compounds 6c, 7 as well as 7j exhibited potent inhibitory activities against all five tumor cells, especially the IC50 values of compound 7 against HL-60 and SMMC-7721cells were 3.41 and 4.51 μmol·L−1, respectively. It was significantly superior to panaxadiol in cytotoxicity. CONCLUSION These results show that 7 and 7j can be used as promising lead compounds for further research.

AIM: To evaluate the performance of three distinct large language models(LLM), including GPT-3.5, GPT-4, and PaLM2, in responding to queries within the field of ophthalmology, and to compare their performance with three different levels of medical professionals: medical undergraduates, master of medicine, and attending physicians.METHODS: A total of 100 ophthalmic multiple-choice tests, which covered ophthalmic basic knowledge, clinical knowledge, ophthalmic examination and diagnostic methods, and treatment for ocular disease, were conducted on three different kinds of LLM and three different levels of medical professionals(9 undergraduates, 6 postgraduates and 3 attending physicians), respectively. The performance of LLM was comprehensively evaluated from the aspects of mean scores, consistency and confidence of response, and it was compared with human.RESULTS: Notably, each LLM surpassed the average performance of undergraduate medical students(GPT-4:56, GPT-3.5:42, PaLM2:47, undergraduate students:40). Specifically, performance of GPT-3.5 and PaLM2 was slightly lower than those of master's students(51), while GPT-4 exhibited a performance comparable to attending physicians(62). Furthermore, GPT-4 showed significantly higher response consistency and self-confidence compared with GPT-3.5 and PaLM2.CONCLUSION: LLM represented by GPT-4 performs well in the field of ophthalmology, and the LLM model can provide clinical decision-making and teaching aids for clinicians and medical education.

Objectives To explore the expression, biological function, and mechanism of MKI67 in pancreatic cancer and its clinical significance. Methods The expression level, diagnosis, and prognostic value of MKI67 in pancreatic cancer were analyzed using public databases. We also investigated the association between the MKI67 with immune cell infiltration and immune checkpoint molecules. We analyzed the functional pathway enrichment to uncover the possible molecular mechanisms. qRT-PCR and Western blot assay were used to verify the expression of MKI67 mRNA and protein. Immunohistochemistry staining was used to detect the expression of MKI67 in tissue protein. Results The high expression of MKI67 was significantly associated with high histological grades and poor outcomes in pancreatic cancer. High MKI67 expression was correlated with poor prognosis of pancreatic cancer patients (P=0.009). MKI67 was an independent risk factor for the patient outcome (95%CI: 1.084-1.743, P<0.05). The MKI67 expression was positively correlated with the helper T cell 2 levels but negatively correlated with plasmacytoid DC, NK cells, mast cells, the T follicular helper, immune DC, and CD8 T cells. Conclusion MKI67 may serve as a biomarker for the diagnosis and prognosis of pancreatic cancer and the mechanism might be associated with immune escape or immunosuppression.