Objective:To automatically classify hypertensive heart disease (HHD) and hypertrophic cardiomyopathy (HCM) based on mul-titask learning algorithm using native T1 mapping images.Methods:A total of 203 patients admitted to Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University from January 2017 to December 2021 were enrolled, including 53 patients with HHD, 121 patients with HCM, and 29 patients with normal control (NC). Native T1 mapping images of all enrolled patients were acquired using MRI and processed by a multi-task learning algorithm. The classification performance of each model was validated using ten-fold crossover, confusion matrix, and receiver operator characteristic (ROC) curves. The Resnet 50 model based on the original images was established as a control.Results:The ten-fold crossover validation results showed that the MTL-1 024, MTL-64, and MTL-all models showed better performance in terms of area under the curve (AUC), accuracy, sensitivity, and specificity compared to the Resnet 50 model. In the classification task, the MTL-64 model showed the best performance in terms of AUC (0.942 1), while the MTL-all model reached the highest value in terms of accuracy (0.852 2). In the segmentation task, the MTL-64 model achieved the best results with the Dice coefficient (0.879 7). The confusion matrix plot showed that the MTL model outperforms the Resnet 50 model based on the original image in terms of overall performance. The ROC graphs of all MTL models were significantly higher than the original image input Resnet 50 model.Conclusions:Multi-task learning-based native T1 mapping images are effective for automatic classification of HHD and HCM.

Objective To explore the effect of ectopic splitting combined with portal vein ligation on rat liver regeneration.Methods Sixty Sprague-Dawley rats were randomly divided into four groups (n =15):portal vein ligation group (PVL group),associating liver partition with PVL group (ALPP group),associating spleen partition combined with PVL group (ASPP group) and associating kidney partition combined with PVL group (AKPP group).Hepatic regeneration rate (HRR),ALT,AST and hepatocyte proliferating cell nuclear antigen (PCNA) were detected on the 2nd,4th and 7th day after operation.Results On the 4th and 7th day,in ALPP group,ASPP group and AKPP group,there was an obvious hyperplasia (F =3.750,P ＜ 0.05;F =16.398,P ＜ 0.01) in the right middle lobe of the liver and higher PCNA (F=6.860,P＜0.01;F=3.810,P＜0.05) in the liver tissue than in PVL group.And ALPP group had significantly higher ALT and AST level on the 2nd and 4th day (ALT:F =8.812,F =21.929;AST:F =36.393,F =6.468;P ＜ 0.01).Conclusions Ectopic splitting combined with PVL can significantly promote rat's liver regeneration,possibly by inflammatory response,stress response and high expression of certain cytokines.

Antineoplastic Agents ; chemistry ; pharmacology ; Carcinoma, Hepatocellular ; drug therapy ; immunology ; pathology ; Cytokines ; immunology ; Drug Screening Assays, Antitumor ; Glypicans ; antagonists & inhibitors ; immunology ; Humans ; Ligands ; Liver Neoplasms ; drug therapy ; immunology ; pathology ; T-Lymphocytes ; drug effects ; immunology

Objective To observe the contents of homocysteine (Hcy),C-reactive protein (hsCRP) and D-dimer(DD) in patients with cerebral infarction and the effects of hyperbaric oxygen (HBO) on them.Methods One hundred and twenty cases of cerebral infarction were voluntarily divided into 2 groups,the control group and the therapy group,each consisting of 60 cases.The patients of the control group received drug treatment,while the therapy group received HBO treatment in addition to routine drug treatment.The levels of Hcy,hsCRP and DD in the patients of the 2 groups were measured both before and after therapy,and changes in neurological functional defect (NFD) were also evaluated both before and after treatment.Results For both groups,the levels of Hcy,hsCRP and DD before therapy were higher than the normal reference value,and they all significantly decreased following therapy (P ＜ 0.01).When compared with those of the control group,the levels of Hcy,hsCRP and DD all decreased significantly (P ＜ 0.05 or P ＜ 0.01).The NFD in the patients of both group were decreased after therapy(P ＜ 0.01),with the NFD decreased more significantly in the patients of the therapy group (P ＜ 0.01).Conclusions HBO therapy could obviously reduced the levels of Hcy,hsCRP and DD in patients with cerebral infarction,which might be beneficial to the recovery of patients with cerebral infarction.

Objective To observe the contents of homocysteine (Hcy),C-reactive protein (hsCRP) and D-dimer(DD) in patients with cerebral infarction and the effects of hyperbaric oxygen (HBO) on them.Methods One hundred and twenty cases of cerebral infarction were voluntarily divided into 2 groups,the control group and the therapy group,each consisting of 60 cases.The patients of the control group received drug treatment,while the therapy group received HBO treatment in addition to routine drug treatment.The levels of Hcy,hsCRP and DD in the patients of the 2 groups were measured both before and after therapy,and changes in neurological functional defect (NFD) were also evaluated both before and after treatment.Results For both groups,the levels of Hcy,hsCRP and DD before therapy were higher than the normal reference value,and they all significantly decreased following therapy (P ＜ 0.01).When compared with those of the control group,the levels of Hcy,hsCRP and DD all decreased significantly (P ＜ 0.05 or P ＜ 0.01).The NFD in the patients of both group were decreased after therapy(P ＜ 0.01),with the NFD decreased more significantly in the patients of the therapy group (P ＜ 0.01).Conclusions HBO therapy could obviously reduced the levels of Hcy,hsCRP and DD in patients with cerebral infarction,which might be beneficial to the recovery of patients with cerebral infarction.

Objective To isolate and identify leukemia stem cells from acute myeloid leukemia patients for further research. Methods By Ficoll density gradient centrifugation, mononuclear cells were firstly separated from bone marrow of patients. According to specific surface markers, CD+34 CD+123 of leukemic stem cells were sorted by flow cytometer. Their ability of self-renewal and differentiation were evaluated by colony formation and cobblestone forming ability. At the same time, the purity and cell morphology of CD+34 CD+123 cells was analysed. Results Comparared with total mononuclear cells, the proportion of the CD+34 CD+123 cells after sorting was 10.7 %, and these cells showed the ability of colony forming and cobblestone forming, and the purity proportion of CD+34 CD+123 cells was 62.1%. Conclusion The leukemia stem cells were isolated successfully and could be used in further study.

Objective To evaluate the maneuvre of curettage and aspiration(LTCA) in laparoscopic hepatectomy. MethodsWe used Peng′s multifunctional operative dissector(PMOD) to perform laparoscopic liver transection by maneuvre of curettage and aspiration in 20 cases undergoing laparoscopic hepatectomy. Results Procedures were all successful. The recovery was uneventful without any complications. Mean operative time was 105 minutes, the average bleeding volume was 420 ml, the largest excised sample size was 10 cm?9 cm?7 cm. All patients were discharged within one week. ConclusionsThe new technique-LTCA can be used in laparoscopic hepatectomy, it has the advantages of clear anatomy, good exposure of canal construction, rapid liver transection, satisfactory hemostasis and clear operative field.