Objective We improved the segmentation model TransUNet based on deep learning methods to construct a multitask model that can both segment regions of interest and predict classification,which made it possible to identify sensitive populations of patients undergoing neoadjuvant therapy for rectal cancer.Methods The multitask model added classification structure on the basis of TransUNet,including the fully connected layer(input of 512,output of 256),the ReLU activation function,and the fully connected layer(input of 256,output of 3),to achieve the prediction of triple classification outcomes(stable disease(SD),partial response(PD),and complete response(CR)).The 3D MRI of 71 rectal cancer patients before neoadjuvant chemotherapy admitted to the Harbin Medical University Cancer Hospital from 2015 to 2017 were extracted into 2D images as data for the study.Dice coefficient and Hausdorff distance were used to evaluate thesegmentation performance,and accuracy,micro-precision,micro-recall,and micro-F1 score were used for classification performance.Results The model was trained for 100 epochs,and the average Dice coefficient and average Hausdorff distance for the segmentation task on the test set were 0.851 and 10.806,respectively.For the classification task,the accuracy,micro-precision,micro-recall,and micro-F1 score on the test set were all 0.651 from the slicing perspective,and all four metrics were 0.857 from the patient perspective.Conclusion Our model works well in the segmentation task.Although the model performs poorly on the classification task at the slice level,the performance was acceptable at the patient level taking into account the tripartite classification results.The multitask model has the potential to be used in the clinic for assisted diagnosis.

Biomimetic wet-adhesive hydrogels mimic the adhesive properties of biological organisms to achieve strong bonding in moist environments.Compared to conventional medical adhesives,these materials are characterized by enhanced biocompatibility,robust ad-hesion,and adjustable physicochemical properties.Although biomimetic wet-adhesive hydrogels have been applied in oral mucosal drug delivery,intraoral wound management,and implant surgery,a systematic review is currently lacking.This article aims to summarize the wet-adhesion mechanisms of bio-inspired materials and their applications in various scenarios and to provide insights and methodolo-gies for the design of novel intraoral dressings.

Objective We improved the segmentation model TransUNet based on deep learning methods to construct a multitask model that can both segment regions of interest and predict classification,which made it possible to identify sensitive populations of patients undergoing neoadjuvant therapy for rectal cancer.Methods The multitask model added classification structure on the basis of TransUNet,including the fully connected layer(input of 512,output of 256),the ReLU activation function,and the fully connected layer(input of 256,output of 3),to achieve the prediction of triple classification outcomes(stable disease(SD),partial response(PD),and complete response(CR)).The 3D MRI of 71 rectal cancer patients before neoadjuvant chemotherapy admitted to the Harbin Medical University Cancer Hospital from 2015 to 2017 were extracted into 2D images as data for the study.Dice coefficient and Hausdorff distance were used to evaluate thesegmentation performance,and accuracy,micro-precision,micro-recall,and micro-F1 score were used for classification performance.Results The model was trained for 100 epochs,and the average Dice coefficient and average Hausdorff distance for the segmentation task on the test set were 0.851 and 10.806,respectively.For the classification task,the accuracy,micro-precision,micro-recall,and micro-F1 score on the test set were all 0.651 from the slicing perspective,and all four metrics were 0.857 from the patient perspective.Conclusion Our model works well in the segmentation task.Although the model performs poorly on the classification task at the slice level,the performance was acceptable at the patient level taking into account the tripartite classification results.The multitask model has the potential to be used in the clinic for assisted diagnosis.

Biomimetic wet-adhesive hydrogels mimic the adhesive properties of biological organisms to achieve strong bonding in moist environments.Compared to conventional medical adhesives,these materials are characterized by enhanced biocompatibility,robust ad-hesion,and adjustable physicochemical properties.Although biomimetic wet-adhesive hydrogels have been applied in oral mucosal drug delivery,intraoral wound management,and implant surgery,a systematic review is currently lacking.This article aims to summarize the wet-adhesion mechanisms of bio-inspired materials and their applications in various scenarios and to provide insights and methodolo-gies for the design of novel intraoral dressings.

AIM:To explore the therapeutic effect and possible molecular mechanisms of prednisone combined with icariin(ICA)on hormone resistant nephrotic syndrome(SRNS).METHODS:In the in vi-vo experiment,rats were divided into control group,SRNS group,prednisone group,and P+I group.Each group was given corresponding drugs for 6 weeks.Detection of 24-hour urinary protein in rats using CBB;The blood biochemistry analyzer de-tects rat albumin,total cholesterol,triglycerides,creatinine,and urea nitrogen;HE and Masson were used to detect morphological changes in rat kidney tissue;Immunohistochemical detection of GR-α,GR-β,NLRP3,caspase-1,GSDMD,IL-1β.In the in vi-tro experiment,HK-2 cell injury model with doxoru-bicin,divided into control group,SRNS group,pred-nisone group,P+l group.GR-α,GR-β,NLRP3,cas-pase-1,GSDMD were detected by Rt-PCR and West-ern blot.RESULTS:In the in vivo experiment,com-pared with the control group,the SRNS group showed weight loss,increased 24-hour urine pro-tein,decreased albumin,increased total cholester-ol,triglycerides,creatinine,and urea nitrogen,renal tubular atrophy,increased renal interstitial area,sig-nificant infiltration of inflammatory cells,fibrous tis-sue proliferation,and GR-β,NLRP3,caspase-1,GSD-MD,IL-1 β in renal tissue decreased(P＜0.01);Com-pared with the SRNS group,the combined group showed weight gain,decreased 24-hour urine pro-tein,increased albumin,decreased total cholester-ol,triglycerides,creatinine,and urea nitrogen,re-duced renal tubular atrophy,reduced interstitial in-flammatory cell infiltration,reduced fibrosis,and and GR-α,NLRP3,caspase-1,GSDMD in renal tissue decreased increased(P＜0.01).In vitro experiments,compared with the control group,the model group showed GR-β,NLRP3,caspase-1,and GSDMD in-creased(P＜0.01),GR-α decreased(P＜0.01);Com-pared with the SRNS group,GR-β,NLRP3,caspase-1,and GSDMD decreased(P＜0.01),GR-α increased in the P+I group.CONCLUSION:The combination of prednisone and ICA has a protective effect on the kidneys of SRNS rats and can improve the therapeu-tic effect.The mechanism may be related to the NL-RP3/Caspase-1/GSDMD pathway.

GPCRs are the largest membrane protein receptor superfamily in the human body, with more than 800 isoforms, and approximately 35% of Food and Drug Administration-approved and marketed drugs currently target GPCRs for the treatment of a wide range of diseases, for heart failure (beta-adrenergic receptors), peptic ulcer (histamine receptors), prostate cancer (gonadotropin receptors), hypertension (adrenergic and angiotensin receptors), pain (opioid receptors), and bronchial asthma (beta2-adrenergic receptors) examples. Although the number of GPCRs is enormous, the signaling proteins downstream of them are limited, heterotrimeric G proteins (GPs) are key proteins that signal GPCRs, translate extracellular stimuli into intracellular responses by coupling to GPCRs and initiate multiple signaling events via downstream cascades. Podocytes are an important component of the glomerular filtration barrier, and their damage is a central event in proteinuria formation and progressive glomerulosclerosis. This article reviews the regulation of GPs, their signaling and their role in podocyte injury to provide a theoretical basis for scientific research and clinical treatment of this disease.

Objective:To assess the clinical value of helium-free magnetocardiography(MCG) in the diagnosis of coronary artery disease(CAD).Methods:A total of 213 patients with suspected CAD undergoing MCG in Beijing Anzhen Hospital were enrolled in the study. All patients underwent coronary CT angiography/invasive coronary angiography(CCTA/ICA) within 48 hours after MCG scanning. The parameters of MCG, including magnetic field multipolarization, magnetic field unipolarization, T-wave flattened, change in magnetic field distribution at TT segment, abnormal T-peak amplitude ration of maximum to minimum, significant movement of poles, magnetic field angle deviation and abnormal distribution of positive pole were used for the evaluation of the stenosis of coronary arteries.Results:Among 213 patients, MCG scanning was completed in 193 cases(90.6%), while 20 cases were excluded for various reasons. The CCTA/ICA results were taken as gold standard, the total coincidence rate of MCG with the degree of stenosis was 88.60%(95% CI: 83.25%-92.72%), the sensitivity and specificity of MCG in the diagnosis of CAD was 89.63%(95% CI: 83.21%-94.21%) and 88.23%(95% CI:78.12%-94.78%), respectively; the positive and negative predictive value were 93.80%(95% CI:88.72%-96.68%) and 81.08%(95% CI:72.15%-87.64%), respectively. Conclusion:MCG is highly accurate in the diagnosis of CAD, it may be widely used clinically as an non-invasive method free of radiation or contrast agent.

Objective To summarize the experience of applying choledochoscopy, duodenoscopy and laparoscopy, one-stage suturing of common bile duct, to treat cholecystolithiasis and choledocholithiasis that failed to respond to ordinary endoscopic sphincterotomy (EST). Methods Retrospectively analyzed the clinical data of twenty-five pa-tients with choledocholithiasis complicated with cholecystolithiasis. 25 cases of failure to endoscopic stone extraction underwent LC and laparoscopic common bile duct exploration with primary suture of (BD) from June 2013 to June 2015. Results One patient was converted to laparotomy with small incision. The other one had residual stones and therefore underwent a second EST. After the treatment, two patients developed hyperamylasemia, which was cured by conservative therapy; One patient had bile leakage, which was treated by percutaneous drainage with no serious complications and death. No long-term complication was found in a portion of patients followed up until now. Conclusion In properly selected patients of duodenoscopy management-failed, synchronous treatment of combined application of three endoscopies in laparoscopic surgery with primary suture of (BD) is feasible, effective and safe.

Objective To explore effect of quercetin on growth of cervical cancer,and its relationship to expression heparanase, and to investigate the possible mechanism of the inhibition effect of quercetin on cervical cancer .Methods HeLa cells were injected into nude mouse to establish the model of cervical cancer.30 nude mice with palpable tumors were randomly assigned to five groups:25,50,100 mg/kg quercetin groups,PI-88 positive group and blank control group.Transmission electron microscope was used to observe the ultrastructural changes of the vascular endothelial cells in each group.The expression of heparanase protein was detected by Western blot.Used blank control group for grey reference, relative grey value of each group was calculated for the further statistical analysis.Results 50,100 mg/kg quercetin groups and group of PI -88 made the volume of tumor tissues smaller.In 50 mg/kg quercetin group, swelling of VEC and mitochondria in tumor tissues was observed.In 100 mg/kg quercetin group, the disappearance of membraneaceous structures was found.In PI-88 positive group, the atresia of lumen, vacuole-shaped smooth endoplasmic reticulum and a dead cell were observed.50 and 100 mg/kg quercetin groups decreased the heparanase protein levels significantly(P<0.05).Furthermore, PI-88 positive group could decrease the heparanase protein levels significantly(P<0.05), compared to 50 and 100 mg/kg quercetin groups.However, the difference between the 25 mg/kg quercetin group and blank control group showed no statistical significance.Conclusion The growth of cervical cancer could be inhibited by 50, 100 mg/kg quercetin.Meanwhile, the ultrastructural changes of tumor endothelial cells could be induced by 50,100 mg/kg quercetin.These changes may relate with the decrease of heparanase protein level .

Objective To evaluate diagnostic values of multi-tumor markers protein biochip detective system for lung cancer. Methods Patients with lung cancer group(78 cases),benign pulmonary diseases group (118 cases) and control group (68 cases) were enrolled.Twelve tumor markers in serum (AFP,CEA,NSE,CA125,CA153,CA242,CA199,PSA,f-PSA,FER,?-HCG and HGH) were measured by the multi-tumor markers protein biochip detective system. Result The serum levels of CEA,CA125,Fer and CA242 in the lung cancer group were much higher than those of the other two groups.There were no significant differences of serum levels and positive rates of other tumor markers among three groups.The sensitivity of CEA,CA125,Fer and CA242 was 41.0%,35.9%,26.9% and 17.9% respectively,the specificity 89.8%,86.0%,86.6% and 95.7% respectively。 Conclusions The multi-tumor markers protein biochip detective system has diagnostic values in lung cancer.When more than three markers are positive simultaneously,the sensitivity was 24.4%,and the specificity was 96.8%.The result could help to detect the character of tumor.