OBJECTIVE: To propose a new protocol for personalized mandibular reconstruction assisted by three-dimensional (3D) retrieval model based on fully connected neural network (FCNN) and a database of mandibles, and to verify clinical feasibility of the protocol. METHODS: A database of mandibles of 300 normal northern Chinese Han people was established. On the basis of cephalometry, the mandible landmarks with good stability were further screened. Mandibular landmarks were selected and geometric features of the mandible were extracted. A 3D retrieval algorithm was developed, which could retrieve the mandible most similar to a given mandible from the database. A FCNN was built to train the algorithm to improve accuracy of the 3D retrieval model. Using Geomagic Control 2014 software, matching accuracy of the 3D retrieval model was based on aforementioned mandible database and algorithm. From December 2019 to March 2021, a total of 5 patients underwent personalized mandibular reconstruction assisted by a 3D retrieval model based on mandible database and FCNN in the Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology. The most similar mandible was retrieved from mandible database through 3D retrieval algorithm. It was used to restore the premorbid morphology of defect area and guide mandibular reconstruction. For the 5 patients, mandible was reconstructed with iliac flap. Virtual surgical plan was transformed using individual surgical guides. RESULTS: Through screening, mandibular landmarks with high reproducibility and stability were identified and composed of mandibular landmarker protocols. After training, the average deviation between most similar mandible retrieved from the 300-case mandible database through 3D retrieval model based on FCNN and given mandible was (1.77±0.44) mm. And the root-mean-square deviation between the most similar mandible retrieved from the database and given mandible was (2.58±0.86) mm. The mandibular reconstruction surgery was successful in all the 5 patients. Their facial symmetry and occlusion were restored. All the patients were satisfied with postoperative appearance. The mean deviation between postoperative mandible and preoperative design was (0.98±0.17) mm. The area with a deviation ≤1 mm accounted for 61.34%±14. 13%, ≤2 mm accounted for 83.82%±7.35%, and ≤3 mm accounted for 93.94%± 2.87%. CONCLUSION The personalized mandibular reconstruction assisted by 3D retrieval model based on the 300-case mandible database and FCNN is feasible clinically.
Humans ; Neural Networks, Computer ; Mandibular Reconstruction/methods* ; Mandible/diagnostic imaging* ; Imaging, Three-Dimensional/methods* ; Adult ; Databases, Factual ; Female ; Male ; Algorithms ; Middle Aged ; Cephalometry

GBA1 gene mutation is an important genetic risk factor for Parkinson’s disease (PD). This paper reports a case of a 43-year-old male PD patient carrying a rare heterozygous Thr408Met mutation in the GBA1 gene identified through whole-exome sequencing, leading to a diagnosis of GBA1-associated PD. The patient’s motor symptoms were primarily characterized by bradykinesia and rigidity, without significant cognitive decline. Treatment with low-dose levodopa combined with a dopamine agonist resulted in significant symptomatic improvement.

Objective To explore the pharmacokinetic characteristics of sufentanil in individuals with normal body mass index(BMI),overweight BMI,and different CYP3A4/5 enzyme genotypes.Methods The patients receiving laparoscopic surgery under general anesthesia in the First Affiliated Hospital of Army Medical University from November 2020 to September 2021 were prospectively recruited in this study.Before the operation,the oral swabs were collected from all the patients for genotyping using the human CYP3A4/5 gene kit.Based on the potential impact of combination of their polymorphisms on sufentanil metabolism and the proportion of different genotype combinations of CYP3A4/5 enzymes,the patients were divided into groups I(3A4 homozygous mutation or 3A4 heterozygous mutation+3A5 homozygous mutation),II(3A4 heterozygous mutation+3A5 heterozygous mutation),and III(3A4 wild type or 3A4 heterozygous mutation+3A5 wild type).According to their BMI,they were also assigned into a normal body weight group(18.5～24.0 kg/m2)and an overweight group(24～<28 kg/m2),and the differences in drug metabolism parameters were statistically analyze between the 2 groups.After routine general anesthesia induction(sufentanil 0.5 μg/kg),venous blood samples were collected to detect the changes in its concentration using high performance liquid chromatography-mass spectrometry(HPLC-MS).The pharmacokinetic data of sufentanil were calculated between the normal BMI group and overweight group in all participants and between the 2 body weight groups among those with different genotype combinations.Results Among the 90 participants completing the blood drug concentration test,8 patients had their blood samples contaminated(including 1 case with an anesthesia duration of<2 h),and 3 were excluded due to low weight or overweight.Eventually,79 participants were included in the pharmacokinetic analysis on the normal body weight group and the overweight group.Compared with the normal body weight group,the central compartment volume of distribution in the overweight group was significantly reduced(P<0.05),while no obvious differences were observed between the 2 groups in terms of peripheral compartment volume of distribution,total clearance rate,peripheral compartment clearance rate,distribution half-life,clearance half-life,and area under the blood concentration-time curve.In group Ⅰ(n=26),the overweight patients(n=13)had significantly reduced central compartment volume of distribution,peripheral compartment volume of distribution,and peripheral compartment clearance rate when compared with the normal body weight patients(n=13)(P<0.05),while no differences were observed in other pharmacokinetic parameters.In groups Ⅱ(n=25)and Ⅲ(n=28),the overweight patients and normal body weight patients had no statistical differences in all pharmacokinetic parameters.Conclusion Among the patients with the same genotype combination of CYP3A4/5 mutations,there was no difference in the metabolism of sufentanil between the overweight and normal weight patients.Additionally,in the population of 3A4 homozygous mutation or 3A4 heterozygous mutation+3A5 homozygous mutation,the overweight patients have smaller peripheral distribution range of sufentanil,and weakened metabolic process.

Objective To explore the mechanism of Yishen Jiangtang Decoction(YSJTD)in improving diabetic kidney disease(DKD)based on the apoptotic Bcl-2/Caspase-3 pathway mediated by endoplasmic reticulum stress(ERS).Methods Thirty 8-week-old SPF male db/db mice were used to establish the DKD model and were randomly divided into model,YSJTD,ERS inhibitor(4-phenylbutyric acid[4-PBA]),and control groups(db/m mice),with 10 mice per group.Mice in the YSJTD and 4-PBA groups were gavaged daily with 5.6 mg/(g·d)YSJTD or 0.5 mg/(g·d)4-PBA,respectively,whereas the model and control groups received sodium carboxymethyl cellulose.Each mouse was orally administered 0.01 mL/(g·d)for 8 weeks.The mice were administered 0.01 mL/(g·d)YSJTD or 0.5mg/(g·d)4-PBA via gavage for 8 weeks.The general condition of the mice was observed,and blood glucose and plasma lipid levels were measured.Oral glucose tolerance tests(OGTT)and insulin tolerance tests(ITT)were performed,and the area under the curve(AUC)was calculated.Renal pathological changes(assessed using hematoxylin and eosin,periodic acid-Schiff,and Masson staining)and cell apoptosis,evaluated via TUNEL staining,were examined.Protein expression levels of Caspase-3 and Bcl-2 in kidney tissues were analyzed using Western blotting.A DKD model was established using high-glucose-induced mouse glomerular mesangial cells,SV40 MES 13.The Cell Counting Kit-8 assay was used to screen for high glucose concentrations and to determine the concentration of the YSJTD drug-containing serum.Cells were divided into four groups:control,model(30 mmol/L high glucose),10％YSJTD drug-containing serum(30 mmol/L high glucose+10％drug-containing serum),and 1 mol/L 4-PBA(30 mmol/L high glucose+1 mmol/L 4-PBA).Western blotting was used to detect the protein levels of GRP78,Caspase-3,and Bcl-2 in the cells.Results Compared to the control group,the model,YSJTD,and 4-PBA groups exhibited significantly increased OGTT-AUC,ITT-AUC,triglyceride(TG),and cholesterol(CHOL)levels(P＜0.05).These groups also showed severe renal pathological damage,increased glycogen deposition,and exacerbated fibrosis in kidney tissues.Compared to the model group,both the YSJTD and 4-PBA groups showed significantly reduced OGTT-AUC,TG,and CHOL levels,alleviated renal pathological damage,and decreased glycogen deposition and fibrosis.The YSJTD group also exhibited significantly reduced ITT-AUC(P＜0.05).Compared to the control group,the model group exhibited an increased number of apoptotic cells in renal tissue,reduced Bcl-2 expression,and elevated Caspase-3 expression(P＜0.05).Compared to the model group,both the YSJTD and 4-PBA groups demonstrated a reduced number of apoptotic cells,decreased Caspase-3 expression,and increased Bcl-2 expression,with the YSJTD group showing a more pronounced decrease in apoptotic cells(P＜0.05).In vitro experiments revealed that,compared to the control group,the model group exhibited increased GRP78 and Caspase-3 expression,as well as decreased Bcl-2 expression(P＜0.05).Compared to the model group,the 10％YSJTD drug-containing serum and 1 mol/L 4-PBA groups showed reduced GRP78 and Caspase-3 expression,as well as upregulated Bcl-2 expression(P＜0.05).Conclusion YSJTD improves glucose and lipid metabolism disorders in DKD by inhibiting the ERS-induced apoptotic pathway mediated by Bcl-2/Caspase-3,thereby exerting protective effects on renal function.

Objective To explore the mechanism of Yishen Jiangtang Decoction(YSJTD)in improving diabetic kidney disease(DKD)based on the apoptotic Bcl-2/Caspase-3 pathway mediated by endoplasmic reticulum stress(ERS).Methods Thirty 8-week-old SPF male db/db mice were used to establish the DKD model and were randomly divided into model,YSJTD,ERS inhibitor(4-phenylbutyric acid[4-PBA]),and control groups(db/m mice),with 10 mice per group.Mice in the YSJTD and 4-PBA groups were gavaged daily with 5.6 mg/(g·d)YSJTD or 0.5 mg/(g·d)4-PBA,respectively,whereas the model and control groups received sodium carboxymethyl cellulose.Each mouse was orally administered 0.01 mL/(g·d)for 8 weeks.The mice were administered 0.01 mL/(g·d)YSJTD or 0.5mg/(g·d)4-PBA via gavage for 8 weeks.The general condition of the mice was observed,and blood glucose and plasma lipid levels were measured.Oral glucose tolerance tests(OGTT)and insulin tolerance tests(ITT)were performed,and the area under the curve(AUC)was calculated.Renal pathological changes(assessed using hematoxylin and eosin,periodic acid-Schiff,and Masson staining)and cell apoptosis,evaluated via TUNEL staining,were examined.Protein expression levels of Caspase-3 and Bcl-2 in kidney tissues were analyzed using Western blotting.A DKD model was established using high-glucose-induced mouse glomerular mesangial cells,SV40 MES 13.The Cell Counting Kit-8 assay was used to screen for high glucose concentrations and to determine the concentration of the YSJTD drug-containing serum.Cells were divided into four groups:control,model(30 mmol/L high glucose),10％YSJTD drug-containing serum(30 mmol/L high glucose+10％drug-containing serum),and 1 mol/L 4-PBA(30 mmol/L high glucose+1 mmol/L 4-PBA).Western blotting was used to detect the protein levels of GRP78,Caspase-3,and Bcl-2 in the cells.Results Compared to the control group,the model,YSJTD,and 4-PBA groups exhibited significantly increased OGTT-AUC,ITT-AUC,triglyceride(TG),and cholesterol(CHOL)levels(P＜0.05).These groups also showed severe renal pathological damage,increased glycogen deposition,and exacerbated fibrosis in kidney tissues.Compared to the model group,both the YSJTD and 4-PBA groups showed significantly reduced OGTT-AUC,TG,and CHOL levels,alleviated renal pathological damage,and decreased glycogen deposition and fibrosis.The YSJTD group also exhibited significantly reduced ITT-AUC(P＜0.05).Compared to the control group,the model group exhibited an increased number of apoptotic cells in renal tissue,reduced Bcl-2 expression,and elevated Caspase-3 expression(P＜0.05).Compared to the model group,both the YSJTD and 4-PBA groups demonstrated a reduced number of apoptotic cells,decreased Caspase-3 expression,and increased Bcl-2 expression,with the YSJTD group showing a more pronounced decrease in apoptotic cells(P＜0.05).In vitro experiments revealed that,compared to the control group,the model group exhibited increased GRP78 and Caspase-3 expression,as well as decreased Bcl-2 expression(P＜0.05).Compared to the model group,the 10％YSJTD drug-containing serum and 1 mol/L 4-PBA groups showed reduced GRP78 and Caspase-3 expression,as well as upregulated Bcl-2 expression(P＜0.05).Conclusion YSJTD improves glucose and lipid metabolism disorders in DKD by inhibiting the ERS-induced apoptotic pathway mediated by Bcl-2/Caspase-3,thereby exerting protective effects on renal function.

Objective To enhance CT radiation dose management in radiology department via applying Six Sigma management method.Methods The radiation quality control processes in the radiology department were optimized according to the Six Sigma quality management DMAIC pattern.The volume CT dose index(CTDIvol),dose length product(DLP),radiation quality control problems of adult and pediatric CT scans from January 2022 to February 2022 were collected as baseline data,and data collected from August 2022 to September 2022 were taken as the control group for analysis via Six Sigma management method.All data of the dose values and problem rates were compared and analyzed between before and after Six Sigma management methods.Results The DLP in the adult group was decreased by 65.5％in computed tomography urography(CTU),decreased by 25.5％in neck enhancement,decreased by 9.8％in head,decreased by 24％in facial cranial,and decreased by 27.7％in chest enhancement,with a statistical difference(P＜0.05).While DLP in the adult group was decreased by 9.7％in abdominal enhancement,with no significant difference(P＞0.05).The DLP in the pediatric(＜1 year)group was increased by 35％in head scans,with no significant difference(P＞0.05).While the DLP was decreased by 30.2％in 1 to 5 years group,decreased by 21.8％in 6 to 10 years group,decreased by 27.6％in 11 to 15 years group,with statistical difference(P＜0.05).The DLP of facial cranial was decreased by 43.3％in 6 to 10 years group,decreased by 29.1％in 11 to 15 years group,with statistical difference(P＜0.05).The DLP of chest was decreased by 13％in＜1 year group(P＞0.05),increased by 2.2％in 1 to 5 years group(P＞0.05),decreased by 42.6％in 6 to 10 years group,decreased by 54.2％in 11 to 15 years group(P＜0.05).The incidence of radiological quality control problems of after Six Sigma management was significantly lower than that of before Six Sigma management(P＜0.05).Conclusion Six Sigma management method can identify problems in the clinical practice and enhance the ability of radiation quality control through optimization.

Objective:To examine the prognosis factors of postoperative cardiac complications in colorectal cancer patients co-morbidated with coronary artery disease.Methods:Clinical data of 449 patients colorectal cancer patients co-morbidated with coronary artery disease accepted redical surgery from April 2013 to April 2020 at Department of General Surgery, Peking Union Medical College Hospital were analyzed retrospectively. There were 306 males and 143 females, aging (68.7±8.9) years (range: 44 to 89 years). Postoperative acute coronary syndrome, new-onset arrhythmia and heart failure that causes clinical symptoms were recorded as cardiac complications. t test, χ 2 test and Fisher exact test were used for univariate analysis of prognosis factors of postoperative cardiac events. The variables with P<0.05 were included in the multivariate Logistic regression was used to determine the independent prognosis factors. Results:After surgery, 44 patients (9.8%) suffered from at least one cardiac event, including 30 patients with acute coronary syndrome, 19 patients with new-onset arrhythmia and 9 patients with heart failure. There were 3 deaths in the cohort within 30 days after surgery. Two patients died from cardiac-related complications, and one from septic shock due to postoperative anastomotic leaks. On Univariate analysis showed that cardiac complications were associated with age ≥80 years, co-morbidated diabetes, emergency surgery, re-operation, anastomotic leakage, intestinal flora disorder and elevation of preoperative neutrophil-lymphocyte ratio (χ 2: 4.308 to 12.219, all P<0.05). Multivariate Logistic regression analysis identified age ≥80 years ( OR=3.195, 95% CI: 1.379 to 7.407, P=0.007), co-morbidated diabetes ( OR=2.551, 95% CI: 1.294 to 5.025, P=0.007), emergency surgery ( OR=4.717, 95% CI: 1.052 to 20.833, P=0.043), and elevated preoperative neutrophil-lymphocyte ratio ( OR=1.114, 95% CI: 1.018 to 1.218, P=0.018) as independent prognosis factors for cardiac complications. Conclusions:Emergency surgery, advanced age, co-morbidated type 2 diabetes and elevated preoperative neutrophil-lymphocyte ratio may increase the risk of postoperative cardiac complications in colorectal cancer patients with coronary artery disease. Surgeons should strictly master surgical indications, pay attention to preoperative assessment, perioperative monitoring, and diagnosis and treatment of postoperative complications in order to reduce the risk of complications.

Objective:To examine the prognosis factors of postoperative cardiac complications in colorectal cancer patients co-morbidated with coronary artery disease.Methods:Clinical data of 449 patients colorectal cancer patients co-morbidated with coronary artery disease accepted redical surgery from April 2013 to April 2020 at Department of General Surgery, Peking Union Medical College Hospital were analyzed retrospectively. There were 306 males and 143 females, aging (68.7±8.9) years (range: 44 to 89 years). Postoperative acute coronary syndrome, new-onset arrhythmia and heart failure that causes clinical symptoms were recorded as cardiac complications. t test, χ 2 test and Fisher exact test were used for univariate analysis of prognosis factors of postoperative cardiac events. The variables with P<0.05 were included in the multivariate Logistic regression was used to determine the independent prognosis factors. Results:After surgery, 44 patients (9.8%) suffered from at least one cardiac event, including 30 patients with acute coronary syndrome, 19 patients with new-onset arrhythmia and 9 patients with heart failure. There were 3 deaths in the cohort within 30 days after surgery. Two patients died from cardiac-related complications, and one from septic shock due to postoperative anastomotic leaks. On Univariate analysis showed that cardiac complications were associated with age ≥80 years, co-morbidated diabetes, emergency surgery, re-operation, anastomotic leakage, intestinal flora disorder and elevation of preoperative neutrophil-lymphocyte ratio (χ 2: 4.308 to 12.219, all P<0.05). Multivariate Logistic regression analysis identified age ≥80 years ( OR=3.195, 95% CI: 1.379 to 7.407, P=0.007), co-morbidated diabetes ( OR=2.551, 95% CI: 1.294 to 5.025, P=0.007), emergency surgery ( OR=4.717, 95% CI: 1.052 to 20.833, P=0.043), and elevated preoperative neutrophil-lymphocyte ratio ( OR=1.114, 95% CI: 1.018 to 1.218, P=0.018) as independent prognosis factors for cardiac complications. Conclusions:Emergency surgery, advanced age, co-morbidated type 2 diabetes and elevated preoperative neutrophil-lymphocyte ratio may increase the risk of postoperative cardiac complications in colorectal cancer patients with coronary artery disease. Surgeons should strictly master surgical indications, pay attention to preoperative assessment, perioperative monitoring, and diagnosis and treatment of postoperative complications in order to reduce the risk of complications.

Objective:To determine the risk factors of extubation failure and its effect on the prognosis of patients who had successfully passed a spontaneous breathing trial (SBT).Methods:The clinical data of patients with mechanical ventilation more than 24 hours who passed SBT admitted to department of intensive care unit (ICU) of First Hospital of Qinhuangdao from November 2018 to November 2019 were retrospectively analyzed. According to the outcome of weaning within 48 hours after weaning, patients were divided into weaning success group and weaning failure group. The baseline data, the presence of basic cardiopulmonary diseases, B-type natriuretic peptide (BNP), fluid balance, albumin and hemoglobin within 24 hours before weaning, the time of mechanical ventilation before weaning, rapid shallow breathing index (RSBI) during SBT, oxygenation index, cough peak flow at the end of SBT, and prognostic indicators were collected. The outcome of weaning was taken as the dependent variable, and the observation factors were taken as the independent variable for univariate analysis. The factors with statistical significance in univariate analysis were analyzed by binary Logistic regression to determine the influencing factors of weaning failure.Results:Of the 204 patients, 167 (81.9%) were successfully weaned, and 37 (18.1%) failed. Compared with the weaning success group, the total duration of mechanical ventilation and the length of ICU stay in the weaning failure group were significantly longer [days: 13.0 (7.5, 23.5) vs. 5.0 (3.0, 8.0), 17.0 (12.5, 31.0) vs. 10.0 (6.0, 15.0), both P < 0.01], and the tracheotomy rate and mortality were significantly higher (32.4% vs. 0%, 51.4% vs. 0%, both P < 0.01). Univariate analysis showed that there were significant differences in age, proportion of patients with cardiopulmonary diseases, BNP and cough peak flow between weaning failure group and weaning success group [age (years old): 70.65±15.78 vs. 62.69±15.82, cardiopulmonary diseases: 62.2% vs. 24.6%, BNP (ng/L): 416.87 (32.70, 1 225.80) vs. 45.36 (10.00, 273.60), cough peak flow (L/min): 59.89±9.06 vs. 83.84±16.52, all P < 0.01]. However, there were no significant differences in gender, acute physiology and chronic health evaluationⅡ (APACHEⅡ) at admission, mechanical ventilation time before weaning, albumin, hemoglobin, oxygenation index, RSBI and fluid balance 24 hours before weaning between weaning failure group and weaning success group [male: 51.4% vs. 68.3%, APACHEⅡ: 16.70±6.65 vs. 15.67±6.28, mechanical ventilation time before weaning (days): 6.0 (2.5, 11.0) vs. 5.0 (3.0, 8.0), albumin (g/L): 27.78±4.15 vs. 27.76±4.46, hemoglobin (g/L): 102.43±15.80 vs. 100.61±17.19, oxygenation index (mmHg, 1 mmHg = 0.133 kPa): 359.33±79.83 vs. 365.75±78.23, RSBI (times·L -1·min -1): 50.73±24.97 vs. 46.76±15.53, positive fluid balance: 70.3% vs. 69.5%, all P > 0.05]. The results of binary Logistic regression analysis showed that age ≥ 75 years old [odds ratio ( OR) = 3.099, 95% confidence interval (95% CI) was 1.003-9.574, P = 0.049], presence of cardiopulmonary diseases ( OR = 3.599, 95% CI was 1.126-11.498, P = 0.031), BNP within 24 hours before weaning ( OR = 1.002, 95% CI was 1.000-1.003, P = 0.005) were the risk factors of extubation failure, while cough peak flow at the end of SBT was the protective factor ( OR = 0.869, 95% CI was 0.823-0.917, P = 0.000). Conclusions:For patients who had successfully passed SBT, age ≥ 75 years old, the presence of cardiopulmonary diseases and an increased level of BNP within 24 hours were the risk factors of extubation failure. In addition, the higher the cough peak flow at the end of SBT, the lower the risk of weaning failure will be.

Objective:To summarize the patient profiles and therapeutic efficacies of ABO-incompatible living-related kidney transplantations at 19 domestic transplant centers and provide rationales for clinical application of ABOi-KT.Methods:Clinical cases of ABO-incompatible/compatible kidney transplantation (ABOi-KT/ABOc-KT) from December 2006 to December 2009 were collected. Then, statistical analyses were conducted from the aspects of tissue matching, perioperative managements, complications and survival rates of renal allograft or recipients.Results:Clinical data of 342 ABOi-KT and 779 ABOc-KT indicated that (1) no inter-group differences existed in age, body mass index (BMI), donor-recipient relationship or waiting time of pre-operative dialysis; (2) ABO blood type: blood type O recipients had the longest waiting list and transplantations from blood type A to blood type O accounted for the largest proportion; (3) HLA matching: no statistical significance existed in mismatch rate or positive rate of PRA I/II between two types of surgery; (4) CD20 should be properly used on the basis of different phrases; (5) hemorrhage was a common complication during an early postoperative period and microthrombosis appeared later; (6) no difference existed in postoperative incidence of complications or survival rate of renal allograft and recipients at 1/3/5/10 years between ABOi-KT and ABOc-KT. The acute rejection rate and serum creatinine levels of ABOi-KT recipients were comparable to those of ABOc-KT recipients within 1 year.Conclusions:ABOi-KT is both safe and effective so that it may be applied at all transplant centers as needed.