Listeria brainstem encephalitis with myelitis is extremely rare in clinical practice.Since the clinical manifestations are non-specific,MRI is helpful for diagnosis.Positive cerebrospinal fluid culture is considered the gold standard for diagnosis.This article reports a case of an immunocompetent individual with listeria brainstem encephalitis with myelitis,aiming to enhance the awareness of this condition.
Humans ; Brain Stem/pathology* ; Diagnostic Errors ; Encephalitis/complications* ; Encephalomyelitis, Acute Disseminated/diagnosis* ; Listeriosis/complications* ; Myelitis/complications*

AIM To study the chemical constituents from the sticks and leaves of Croton cascarilloides Raeusch.and their biological activities.METHODS The 95％ethanol extract from the sticks and leaves of C.cascarilloides was isolated and purified by MCI,silica gel,Sephadex LH-20 and semi-preparative HPLC,then the structures of obtained compounds were identified by physicochemical properties and spectral data.LPS-induced NO RAW264.7 cell model induced by LPS was used to evaluate its anti-inflammatory activity in vitro.GES-1 injury model induced by taurocholic acid was used to screen the gastric mucosal protection activity.RESULTS Fourteen compounds were isolated and identified as bullatantriol(1),(-)-boscialin(2),(+)-dehydrovomifoliol(3),3-(hydroxylacetyl)-indole(4),pinoresinol(5),3,7-dimethyl-octa-1,7-diene-3,6-ol(6),(+)-syringaresinol(7),curcasinlignan B(8),cleomiscosin C(9),cleomiscosinD(10),2,6-dimethyl-octa-1,7-dien-3,6-diol(11),vanillin(12),vanillic acid(13),methyl vanillate(14).Compound 4 had certain anti-inflammatory activity,with IC50 values of 73.62 μmol/L.The protective rates of 25 μmol/L compounds 1-4,6,9-12 and 14 on gastric mucosal epithelial cells were 30.07％,34.18％,23.91％,30.92％,17.51％,19.69％,31.76％,22.46％,30.56％and 14.49％,respectively.CONCLUSION Compounds 1-14 are isolated from this plant for the first time.Compound 4 shows anti-inflammatory activity,1-4,6,9-12 and 14 show different degrees of gastric mucosal epithelial cell protective activity.

OBJECTIVE: To evaluate the anti-hepatocellular carcinoma (HCC) activity of total alkaloids from Gelsemium elegans Benth. (TAG) in vivo and in vitro and to elucidate their potential mechanisms of action through transcriptomic analysis. METHODS: TAG extraction was conducted, and the primary components were quantified using high-performance liquid chromatography (HPLC). The effects of TAG (100, 150, and 200 µg/mL) on various tumor cells, including SMMC-7721, HepG2, H22, CAL27, MCF7, HT29, and HCT116, were assessed. Effects of TAG on HCC proliferation and apoptosis were detected by colony formation assays and cell stainings. Caspase-3, Bcl-2, and Bax protein levels were detected by Western blotting. In vivo, a tumor xenograft model was developed using H22 cells. Totally 40 Kunming mice were randomly assigned to model, cyclophosphamide (20 mg/kg), TAG low-dose (TAG-L, 0.5 mg/kg), and TAG high-dose (TAG-H, 1 mg/kg) groups, with 10 mice in each group. Tumor volume, body weight, and tumor weight were recorded and compared during 14-day treatment. Immune organ index were calculated. Tissue changes were oberseved by hematoxylin and eosin staining and immunohistochemistry. Additionally, transcriptomic and metabolomic analyses, as well as quatitative real-time polymerase chain reaction (RT-qPCR), were performed to detect mRNA and metabolite expressions. RESULTS: HPLC successfully identified the components of TAG extraction. Live cell imaging and analysis, along with cell viability assays, demonstrated that TAG inhibited the proliferation of SMMC-7721, HepG2, H22, CAL27, MCF7, HT29, and HCT116 cells. Colony formation assays, Hoechst 33258 staining, Rhodamine 123 staining, and Western blotting revealed that TAG not only inhibited HCC proliferation but also promoted apoptosis (P<0.05). In vivo experiments showed that TAG inhibited the growth of solid tumors in HCC in mice (P<0.05). Transcriptomic analysis and RT-qPCR indicated that the inhibition of HCC by TAG was associated with the regulation of the key gene CXCL13. CONCLUSION TAG inhibits HCC both in vivo and in vitro, with its inhibitory effect linked to the regulation of the key gene CXCL13.
Animals ; Apoptosis/drug effects* ; Liver Neoplasms/genetics* ; Carcinoma, Hepatocellular/genetics* ; Humans ; Alkaloids/therapeutic use* ; Gelsemium/chemistry* ; Cell Line, Tumor ; Cell Proliferation/drug effects* ; Mice ; Xenograft Model Antitumor Assays

Objective To investigate the mortality and risk factors of HIV-infected patients complicated with progressive multifocal leukoencephalopathy(PML)to inform the outcomes of these patients.Methods The clinical data of people living with HIV related PML who were treated at Chongqing Public Health Medical Treatment Center from January 1,2019 to December 31,2023 were retrospectively analyzed.Kaplan-Meier method was used for survival analysis.Log-rank test was performed.Cox regression model was used for multivariate analysis.Results A total of 42 people living with HIV related PML were enrolled,including 34 males(81.0％).The median age was 44.5(36.3,51.0)years.PML was confirmed in 76.2％(32/42)of patients,and possible PML was diagnosed in 23.8％(10/42)of patients.The median time to diagnosis was 32.5(14.8,58.3)days.The median CD4+T cell count was 69.0(39.8,112.0)cells/μL.The median HIV viral load was 5.05(2.62,5.77)log10 copies/mL.The overall mortality rate was 54.8％(23/42)for patients with HIV related PML.CD4+T cell count ≤50 cells/μL and initial modified Rankin scale(mRS)score ≥4 points were independent risk factors for the overall mortality of people living with HIV related PML(P＜0.05).Conclusions People living with HIV related PML have a high mortality rate.Low CD4+T cell count and high initial mRS score were independent risk factors for the mortality of patients with HIV related PML.Currently,no definitive and effective drug treatment is available for PML.Early detection,diagnosis and initiation of antiretroviral therapy may improve the outcomes of patients.

Purpose To evaluate the diagnostic value of 18F-fluorodeoxyglucose(18F-FDG)PET/CT in differentiating primary lung cancer(PLC)from metastatic pulmonary breast cancer in breast cancer patients with solitary pulmonary lesion(SPL).Materials and Methods This retrospective analysis included 58 breast cancer patients with SPL in the Cancer Hospital of the Chinese Academy of Medical Sciences from January 2015 to August 2024.All patients had pathologically confirmed breast cancer with SPL and underwent PET/CT scans,including 36 cases of PLC and 22 cases of metastatic pulmonary breast cancer.Differences in clinical pathological features,high resolution CT morphological,and PET metabolic characteristics were analyzed.Multivariate Logistic regression was utilized to investigate independent predictive factors for SPL diagnosis.Results Statistically significant differences were observed between lesion density,nodule-lung interface,bubble sign,vascular convergence sign and pleural indentation sign(χ2=9.420,7.000,8.487,all P<0.05).PET/CT metabolic analysis revealed a significant difference in maximum standardized uptake value(SUVmax)between the two groups(Z=4.613,P<0.001).Multivariate analysis showed that bubble sign,pleural indentation sign and lower SUVmax were independent predictors for PLC.With an SUVmax threshold of 2.5,the area under the receiver operating curve(AUC)was 0.862,with a sensitivity of 90.9%,specificity of 77.8%and an accuracy of 82.8%.Combined analysis of high resolution CT and SUVmax demonstrated the highest diagnostic efficacy,with an area under the curve of 0.937,sensitivity of 90.9%,specificity of 94.4%and accuracy of 93.1%.Conclusion The presence of bubble sign,pleural indentation and SUVmax<2.5 suggests a high likelihood of PLC.Combined high resolution CT imaging features and PET metabolic characteristics significantly improve diagnostic accuracy for SPLs in breast cancer patients.

Objective To investigate the mortality and risk factors of HIV-infected patients complicated with progressive multifocal leukoencephalopathy(PML)to inform the outcomes of these patients.Methods The clinical data of people living with HIV related PML who were treated at Chongqing Public Health Medical Treatment Center from January 1,2019 to December 31,2023 were retrospectively analyzed.Kaplan-Meier method was used for survival analysis.Log-rank test was performed.Cox regression model was used for multivariate analysis.Results A total of 42 people living with HIV related PML were enrolled,including 34 males(81.0％).The median age was 44.5(36.3,51.0)years.PML was confirmed in 76.2％(32/42)of patients,and possible PML was diagnosed in 23.8％(10/42)of patients.The median time to diagnosis was 32.5(14.8,58.3)days.The median CD4+T cell count was 69.0(39.8,112.0)cells/μL.The median HIV viral load was 5.05(2.62,5.77)log10 copies/mL.The overall mortality rate was 54.8％(23/42)for patients with HIV related PML.CD4+T cell count ≤50 cells/μL and initial modified Rankin scale(mRS)score ≥4 points were independent risk factors for the overall mortality of people living with HIV related PML(P＜0.05).Conclusions People living with HIV related PML have a high mortality rate.Low CD4+T cell count and high initial mRS score were independent risk factors for the mortality of patients with HIV related PML.Currently,no definitive and effective drug treatment is available for PML.Early detection,diagnosis and initiation of antiretroviral therapy may improve the outcomes of patients.

Purpose To evaluate the diagnostic value of 18F-fluorodeoxyglucose(18F-FDG)PET/CT in differentiating primary lung cancer(PLC)from metastatic pulmonary breast cancer in breast cancer patients with solitary pulmonary lesion(SPL).Materials and Methods This retrospective analysis included 58 breast cancer patients with SPL in the Cancer Hospital of the Chinese Academy of Medical Sciences from January 2015 to August 2024.All patients had pathologically confirmed breast cancer with SPL and underwent PET/CT scans,including 36 cases of PLC and 22 cases of metastatic pulmonary breast cancer.Differences in clinical pathological features,high resolution CT morphological,and PET metabolic characteristics were analyzed.Multivariate Logistic regression was utilized to investigate independent predictive factors for SPL diagnosis.Results Statistically significant differences were observed between lesion density,nodule-lung interface,bubble sign,vascular convergence sign and pleural indentation sign(χ2=9.420,7.000,8.487,all P<0.05).PET/CT metabolic analysis revealed a significant difference in maximum standardized uptake value(SUVmax)between the two groups(Z=4.613,P<0.001).Multivariate analysis showed that bubble sign,pleural indentation sign and lower SUVmax were independent predictors for PLC.With an SUVmax threshold of 2.5,the area under the receiver operating curve(AUC)was 0.862,with a sensitivity of 90.9%,specificity of 77.8%and an accuracy of 82.8%.Combined analysis of high resolution CT and SUVmax demonstrated the highest diagnostic efficacy,with an area under the curve of 0.937,sensitivity of 90.9%,specificity of 94.4%and accuracy of 93.1%.Conclusion The presence of bubble sign,pleural indentation and SUVmax<2.5 suggests a high likelihood of PLC.Combined high resolution CT imaging features and PET metabolic characteristics significantly improve diagnostic accuracy for SPLs in breast cancer patients.

AIM To study the chemical constituents from the sticks and leaves of Croton cascarilloides Raeusch.and their biological activities.METHODS The 95％ethanol extract from the sticks and leaves of C.cascarilloides was isolated and purified by MCI,silica gel,Sephadex LH-20 and semi-preparative HPLC,then the structures of obtained compounds were identified by physicochemical properties and spectral data.LPS-induced NO RAW264.7 cell model induced by LPS was used to evaluate its anti-inflammatory activity in vitro.GES-1 injury model induced by taurocholic acid was used to screen the gastric mucosal protection activity.RESULTS Fourteen compounds were isolated and identified as bullatantriol(1),(-)-boscialin(2),(+)-dehydrovomifoliol(3),3-(hydroxylacetyl)-indole(4),pinoresinol(5),3,7-dimethyl-octa-1,7-diene-3,6-ol(6),(+)-syringaresinol(7),curcasinlignan B(8),cleomiscosin C(9),cleomiscosinD(10),2,6-dimethyl-octa-1,7-dien-3,6-diol(11),vanillin(12),vanillic acid(13),methyl vanillate(14).Compound 4 had certain anti-inflammatory activity,with IC50 values of 73.62 μmol/L.The protective rates of 25 μmol/L compounds 1-4,6,9-12 and 14 on gastric mucosal epithelial cells were 30.07％,34.18％,23.91％,30.92％,17.51％,19.69％,31.76％,22.46％,30.56％and 14.49％,respectively.CONCLUSION Compounds 1-14 are isolated from this plant for the first time.Compound 4 shows anti-inflammatory activity,1-4,6,9-12 and 14 show different degrees of gastric mucosal epithelial cell protective activity.

Fibromyalgia syndrome （FMS） is a refractory， chronic non-articular rheumatic disease characterized by widespread pain throughout the body， for which there are no satisfactory therapeutic drugs or options. There are rich Chinese medical therapies， and some non-drug therapies， such as acupuncture， Tai Chi， and Ba-Duan-Jin， have shown satisfactory efficacy and safety and definite advantages of simultaneously adjusting mind and body. FMS is taken as a disease responding specifically to traditional Chinese medicine （TCM） by the National Administration of Traditional Chinese Medicine in 2018. In order to clarify the research progress in FMS and the clinical advantages of TCM/integrated Chinese and Western medicine， the China Academy of Chinese Medicine organized a seminar for nearly 20 experts in Chinese and Western medicine， including rheumatology， psychology， acupuncture and moxibustion， and encephalopathy， with the topic of difficulties in clinical diagnosis and treatment of FMS and advantages of TCM and Western medicine. The recommendations were reached on the difficulties in early diagnosis and solutions of FMS， mitigation of common non-specific symptoms， preferential analgesic therapy， TCM pathogenesis and treatment advantages， and direction of treatment with integrated Chinese and Western medicine. FMS is currently facing the triple dilemma of low early correct diagnosis， poor patient participation， and unsatisfactory benefit from pure Western medicine treatment. To solve the above problems， this paper suggests that rheumatologists should serve as the main diagnostic force of this disease， and they should improve patient participation in treatment decision-making， implement exercise therapy， and fully utilize the holistic and multidimensional features of TCM， which is effective in alleviating pain， improving mood， and decreasing adverse events. In addition， it is suggested that FMS treatment should rely on both TCM and Western medicine and adopt multidisciplinary joint treatment， which is expected to improve the standard of diagnosis and treatment of FMS in China.

It is the focus of higher education reform in the new era to comprehensively promote the con-struction of ideology and political education based on the characteristics of professional courses and en-hancing the effectiveness of ideology and political education.As an important basic course for medical students in colleges,molecular biology is closely related to basic medical disciplines and clinical medi-cine,and is a rapidly developing cutting-edge discipline,which has the natural advantage of serving as a carrier of ideology and political education.In this study,the innovative integration of project-based group study (PBGS) with the outcome-oriented behavior (OBE) of moral education is applied to the teaching of the ideology and politics of the medical molecular biology course,and the integration of the two has made a useful exploration to enhance the effectiveness of the ideology and politics teaching of the course.Taking students as the center,we have constructed an ideology and politics teaching system for medical molecular biology courses by combining on-line and off-line teaching activities through improving the teaching objectives,innovating the teaching design,digging into the case of ideology and politics,intro-ducing a variety of teaching methods,strengthening the management of teaching practice,and optimizing the evaluation mode.After two years of teaching practice,this model has effectively improved the teach-ing effect of the medical molecular biology course.The academic performance of the students in the prac-tice group has improved significantly,and the teachers and students have been given excellent evalua-tion.The results of the questionnaires before and after class showed that more than 80％ of the students believed that their horizons had been broadened and their knowledge had been increased through learn-ing.More than 50％ of the students believed that their learning ability and innovation consciousness had been improved;their scientific research quality had been improved;and their confidence in studying medicine had been strengthened.By strengthening the cultivation of students' scientific research and in-novation capabilities,we guided students to participate in subject competitions and won many national a-wards.Throughout the teaching process,we aim to expand the breadth and depth of ideology and political education,cultivate scientific spirits,innovation ability,moral cultivation,and humanistic qualities.In sum,our work provides experiences for the cultivation of high-quality medical talents.