Objective To analyze the clinical characters,treatment and prognosis of primary malignant tumor in vagina.Methods A retrospective analysis of 42 patients diagnosed with primary malignant tumor in vagina in Peking Union Medical College Hospital(PUMCH)between Jan 1984 and Aug 2006 was performed.Results Primary malignant tumor accounted for 0.98%(42/4286)in the total gynecological malignant tumors during that period in PUMCH.According to the International Federation of Gynecology and Obstetrics(FIGO)staging system,19 cases were at stage Ⅰ,12 cases at stage Ⅱ,5 cases at stageⅢ,and 6 cases at stage Ⅵ.Thairteen cases were squamous carcinoma,13 cases were malignant melanoma,8 cases were adenocarcinoma.3 case8 were yolk sac tumor and 5 cases were other types.The majority of patients were treated with surgery combined with radiotherapy and chemotherapy.Up to August 2007,19 cases survived.18 cases were dead and 5 casefl were lost.The longest follow up was 10 years,with the median time of 2 years.The overall 2-year SUrvival rate was 60.6%.For stage Ⅰ,stage Ⅱ, and stage Ⅲ-Ⅵ,the 2-year survival rates were 71.3%.58.3%and 29.6%respectively.The 2-year survival rate of patients with squamous carcinoma Was 46.8%,malignant melanoma 72.9%,adenocarcinoma 20.0%and patients with yolk sac tumor were all alive tumor-free after 6-10 years'follow up.Conclusions The prognosis of primary malignant tumor in vagina is affected by clinical stage and histological type.A8 to malignant melanoma,radical surgery combined with chemotherapy and immunotherapy produce good effects.Patients with yolk sac tumor can be cured only with chemotherapy.As to other types,more treatment experiences are needed.

This study aims to investigate the effect of transmembrane protein angiotensin converting enzyme 2 (ACE2) on the prognosis of breast cancer and its potential mechanism.Public databases were used to analyze ACE2 expression and its relationship with clinicopathological features and prognosis of breast cancer patients, combined with in vitro experiments to analyze the mechanism of action and immune relevance of ACE2 in breast cancer.Results showed that the expression of ACE2 in breast cancer tissues was significantly lower than that in normal breast tissues, and that its expression was negatively correlated with age, M stage and N1mi stage of breast cancer patients (P < 0.05).Patients with Luminal type breast cancer with high ACE2 expression had poor prognosis, while in the triple-negative breast cancer (TNBC) subtype, ACE2 showed different prognostic significance.In addition, ACE2 is closely associated with the metabolic and immune microenvironment of tumor tissue.In vitro experiments have shown that ACE2 is lowly expressed in MDA-MB-231 cells and may inhibit cell progress by downregulating matrix metalloproteinase 2（MMP2）.The results suggest that the low expression of ACE2 in breast cancer is closely associated with patient prognosis as well as metabolic and immune microenvironment, and that ACE2 may inhibit TNBC cell progress through the MMP2 pathway.

Objective:To examine the risk factors and predictive value of depression following mild acute ischemic stroke in elderly individuals.The aim is to enhance early identification and intervention, ultimately leading to improved prognosis.Methods:A case-control study was conducted on 988 elderly patients with mild acute ischemic stroke.The study collected general population and social data, as well as clinical laboratory data such as blood glucose, blood lipids, and AD7C-NTP in urine.Additionally, the patients underwent assessments using the Montreal Cognitive Assessment Scale(MoCA), National Institutes of Health Stroke Scale(NHISS), Barthel index(BI), Hamilton Anxiety Scale(HAMA), and Hamilton Depression Scale(HAMD).Based on the HAMD depression scale score, the patients were divided into a nopost-stooke depression(NPSD)group and a post-stooke depression(PSD)group.The study then analyzed the related risk factors and predictive value of PSD.Results:A total of 988 patients were eligible for inclusion, with 132 being excluded and 856 being included.The NPSD and PSD groups showed significant differences in age, hypertension, smoking history, education level, and stroke history(all P<0.05).Regarding clinical data, there were statistically significant differences between the two groups in total cholesterol(TC), triacylglycerol(TG), HDL, urinary AD7C-NTP, MoCA, and HAMA scores(all P<0.05).The results of the multi-factor logistic regression analysis revealed that gender( OR=1.975, 95% CI: 1.223-3.190, P=0.005), stroke history( OR=1.352, 95% CI: 0.877-2.086, P=0.042), and HAMA score( OR=1.216, 95% CI: 0.932-1.526, P=0.043)were identified as independent risk factors for post-stroke depression in the elderly.Conversely, MoCA score( OR=0.873, 95% CI: 0.814-0.937, P<0.001)was found to be an independent protective factor.Furthermore, the ROC curve analysis demonstrated that the HAMA score(AUC=0.892, sensitivity: 0.721, specificity: 0.854, cut-off value: 9.5)exhibited significant predictive value, while the other indexes had limited predictive value. Conclusions:Gender, stroke history, and HAMA score have been identified as potential independent risk factors for post-stroke depression(PSD)in the elderly, while MoCA score may serve as an independent protective factor.Notably, HAMA score demonstrates a strong predictive ability for PSD.Early identification of these factors and timely intervention could significantly contribute to improving prognosis.

Objective:To investigate the distribution and seasonal fluctuations of flies in Hangzhou, study the resistance of Musca domestica ( M. domestica) to five commonly used sanitary insecticides and changing patterns in Hangzhou and provide a basis for scientific control of flies. Methods:From April to November 2023, the cage trap method was used for ecological monitoring of flies. From May to June 2023, the swing net method was used to collect M. domestica from various districts (counties and cities) in Hangzhou. After indoor breeding, the resistance of F1 generation female adult flies to five commonly used sanitary insecticides was determined using the micro-drop method. Probit regression model was used to calculate the median lethal dose (LD 50), 95% confidence interval ( CI) and virulence regression equation. Results:In 2023, the fly density in Hangzhou was 5.99 flies/cage, with a higher density of flies belonging to the Sarcophagus family (2.39 flies/cage), making it the dominant fly species in Hangzhou. Among different monitoring points, the fly density in Linping District was relatively high (20.97 flies/cage). In different habitats, the fly density in agricultural markets was relatively high (fly density from April to November: 2.86, 5.39, 8.86, 16.86, 31.32, 6.39, 3.75 and 1.89 flies/cage). The seasonal fluctuation of fly density showed a unimodal pattern, with the higher density in August (13.45 flies/cage). The M. domestica population in Hangzhou was sensitive to dichlorvos [resistance ratio ( RR): 3.08 times]. Different degrees of resistance were developed to propoxur, deltamethrin, beta-cypermethrin, and beta-cyhalothrin. The degree of resistance from high to low was propoxur (> 336.36 times), beta-cypermethrin (906.61 times), beta-cyhalothrin (432.29 times), and deltamethrin (72.56 times). Based on the monitoring results from 2003 to 2023, the RR of dichlorvos reached the higher level in 2008 (33.47 times) and gradually decreased to a sensitive level. The resistance level of propoxur had been at an extremely high level over the years. Three types of pyrethroid insecticides all had high resistance. Conclusions:The species of flies in the Sarcophagus family are the dominant population in Hangzhou, and M. domestica has developed high resistance to four commonly used insecticides except for dichlorvos. The use of physical control techniques is advocated to reduce the use of chemical pesticides, and prevent the continuous increase of resistance in M. domestica.