Objective To explore the characteristics of chondrocyte apoptosis following acute osteochondral injury and the effect of intra-articular sodium hyaluronate injection in prevention of chondrocyte apoptosig. Methods Acute osteochondral injuries were created by drilling holes in knees at both sides of 28 rabbits according to Costouros' method. The experimental and control sides were randomized in each animal. Another four rabbits served as a normal control which received dissection of knee joint capsule without osteochondral injury. The experimental knee was injected with 1 % sodium hyaluronate at the end of the operation and then every week postoperatively. TUNEL and fluorescence-activated cell sorter (FACS) were applied to study the injured femoral condyles obtained at different intervals following the drilling injury. Results From day 4 after injury, the injured cartilage specimens displayed a statistically significant increase in overall level of apoptosis. Chondrocyte apoptosis was significantly reduced in the experiment knees compared with the injured ones. Conclusions Chondrocyte apoptosis may contribute to the subsequent development of post-traumatic arthritis. Intra-articular sodium hyaluronate injection just after acute osteochondral injury can suppress chondrocyte apoptosis, and thus help prevent the knee from post-traumatic arthritis.

Objective: Traditional Kamikawa anastomosis in digestive tract reconstruction after proximal gastrectomy can greatly decrease the anastomosis-related complications and reduce the incidence of reflux esophagitis, but its complexity limits the wide application. To decrease the complexity of Kamikawa anastomosis, the surgical team of Changzhi People's Hospital of Shanxi Changzhi Medical College improved this technique by using novel notion and reduced surgical procedures. This study aims to evaluate the efficacy and safety of modified Kamikawa anastomosis in digestive tract reconstruction after proximal gastrectomy. Methods: A descriptive cohort study was carried out. Case enrollment criteria: (1) upper gastric carcinoma or esophagogastric junction carcinoma without distant metastasis was confirmed by preoperative gastroscopic biopsy and imaging examination; (2) tumor diameter was less than 4 cm; (3) preoperative clinical staging was cT1-3N1M0. Exclusion criteria: (1) patients received preoperative neoadjuvant chemotherapy; (2) patients had severe heart or lung disease, or poor nutritional status so that they could not tolerate surgery. Clinical data of 25 patients with upper gastric carcinoma or esophagogastric junction carcinoma who underwent modified Kamikawa anastomosis in digestive tract reconstruction in Heji Hospital (8 cases) and Changzhi People's Hospital (17 cases) from April 2019 to December 2020 were retrospectively collected. Of 25 patients, 21 were male and 4 were female, with mean age of 63.0 (49 to 78) years; 3 underwent open surgery and 22 underwent laparoscopic surgery. The modified Kamikawa anastomosis was as follows: (1) the novel notion of total mesangial resection of the esophagogastric junction was applied to facilitate the thorough removal of lymph nodes and facilitate hand-sewn anastomosis and embedding; (2) the diameter of the anastomotic stoma was selected according to the diameter of the esophageal stump, between 2.5 and 3.5 cm, to reduce the occurrence of anastomotic stenosis; (3) an ultrasonic scalpel was used to incise the esophageal stump, which could not only prevent bleeding of the esophageal stump, but also closely seal the esophageal mucosa, muscle layer and serosa to prevent esophageal mucosa retraction; (4) barbed suture was used to suture the remnant stomach fundus and esophagus to fix the stomach fundus in order to reduce the cumbersome and difficult intermittent sutures in a small space; (5) two barbed sutures were used to continuously suture the front and back walls of the anastomosis and complete the suture and fixation of the muscle flap. Relevant indicators of surgical safety, postoperative complications (using the Clavien-Dindo classification), esophageal reflux symptoms and the occurrence of esophagitis (using Los Angeles classification) were analyzed. The gastroesophageal reflux disease (GERD) score, gastroscopy, multi-position digestive tract radiography during postoperative follow-up were used to evaluate the residual gastric motility and anti-reflux efficacy. Results: Modified Kamikawa anastomosis in digestive tract reconstruction after proximal gastrectomy was successfully performed in 25 patients. The surgical time was (5.8±1.8) hours, the intraoperative blood loss was (89.2±11.8) ml, and the average hospital stay was (13.8±2.9) days. Three cases (12.0%) developed postoperative anastomotic stenosis as Clavien-Dindo grade III and were healed after endoscopic dilation treatment. Postoperative upper gastrointestinal radiography showed 1 case (4.0%) with reflux symptoms as Clavien-Dindo grade I. Gastroscopy showed no signs of reflux esophagitis, and its Los Angeles classification was A grade. No anastomotic bleeding, local infection and death were found in all the patients. At postoperative 6-month of follow-up, GERD score showed no significant difference compared to pre-operation (2.7±0.6 vs. 2.4±1.0, t=-1.495, P=0.148). Conclusion: Modified Kamikawa anastomosis in digestive tract reconstruction after proximal gastrectomy is safe and feasible with good anti-reflux efficacy.
Aged ; Anastomosis, Surgical ; Cohort Studies ; Esophagogastric Junction/surgery* ; Female ; Gastrectomy ; Humans ; Male ; Middle Aged ; Retrospective Studies

Standardized surgical management of postoperative specimens of gastric cancer is an important part of the standardized diagnosis and treatment of gastric cancer. It can reflect the accurate number and detailed distribution of lymph nodes in the specimen and lay the foundation for accurate and standardized pathological reports after surgery. Meanwhile, it can evaluate the scope of intraoperative lymph node dissection, the safety of cutting edge, and the standardization of surgery (principle of en-bloc dissection), which is an important means of surgical quality control. It also provides accurate research samples for further research and is an important way for young surgeons to train their clinical skills. The surgical management of postoperative specimens for gastric cancer needs to be standardized, including specimen processing personnel, processing flow, resection margin examination, lymph node sorting, measurement after specimen dissection, storage of biological specimens, documentation of recorded data, etc. The promotion of standardized surgical management of specimens after radical gastrectomy can promote the homogenization of gastric cancer surgical diagnosis and treatment in medical institutions and further promote the high-quality development of gastric cancer surgery in China.
Gastrectomy ; Humans ; Laparoscopy ; Lymph Node Excision ; Lymph Nodes/surgery* ; Stomach Neoplasms/surgery*

The quality control and standardization of procedures in radical gastrectomy for gastric cancer, especially the standardized processing of specimens after radical gastrectomy for gastric cancer, is very important. It is not only the basis of accurate pathological staging, but also the evidence of surgical quality and the original data of clinical research, which plays a pivotal role. The examination and classification of lymph nodes, specimens processing records, and data uploading and archiving after radical gastrectomy for gastric cancer are indispensable. It is necessary for surgeons to participate in the processing of surgical specimens. This article will combine the current research status and progress at home and abroad to review the standardized processing of specimens after radical gastrectomy for gastric cancer.
Gastrectomy ; Humans ; Lymph Node Excision ; Lymphatic Metastasis ; Neoplasm Staging ; Stomach Neoplasms/surgery*

Objective To explore the probability and associated factors of pulmonary fibrosis in 350 cases of elderly pneumonia. Methods Elderly patients who received diagnosis and treatment at Changzhi Medical College Affiliated Peace Hospital from January 2018 to December 2022 were selected, and 350 patients who met the criteria were included in the study. Analyze its clinical data, incidence of pulmonary fibrosis, and analyze the relationship between the two. Results The average age of 350 patients was (63.51 ± 5.74) years old; 219 cases were common type , 72 cases were severe type, and 59 cases were critically ill. At admission, the CT signs were: ground glass in 66 cases (18.86%) , paving stone in 37 cases (10.57%), consolidation in 73 cases (20.86%), nodules in 93 cases (26.57%) , fried egg sign in 20 cases (5.71%) , and mosaic sign in 61 cases (17.43%). At discharge, the lesion signs were as follows: 61 cases (17.43%) had no lesions, 207 cases (59.14%) maintained the original lesion signs, and 82 cases (23.43%) evolved into other signs. 76 cases of pulmonary fibrosis were discharged, with an incidence rate of 21.71%. There were significant differences in the incidence of pulmonary fibrosis among patients with different ages, lesion evolution during treatment, lesion signs at discharge, and clinical stages (all P<0.001). Pulmonary fibrosis is positively correlated with age (P=0.047), lesion signs at discharge (P=0.032), and clinical classification (P=0.010). The incidence of lesions presenting as paving stones (P=0.014) and fibrosis in critically ill patients (P=0.013) at discharge is higher. Age increase (P=0.047) , wide range of lesions at admission (P=0.042), evolution of lesions into other signs at discharge (P=0.016), and clinical classification as severe (P=0.008) or critically ill (P=0.021) are independent risk factors for the development of pulmonary fibrosis in elderly pneumonia patients. Conclusion The incidence of pulmonary fibrosis in elderly patients exceeds 20%. Increasing age, wide range of lesions upon admission, evolution of lesions into other signs upon discharge, and clinical classification as severe or critically ill are independent risk factors for the occurrence of pulmonary fibrosis in elderly pneumonia patients.

italic>Sophora flavescens is a traditional Chinese medicine rich in flavonoids and has wide application potential in drug development and clinical practice. In this study, a total of 227 flavonoids were detected among five tissues of S. flavescens during anthesis using widely targeted metabolomics techniques. There were 137 flavonoids shared by five S. flavescens tissues and 18 root-specific flavonoids. There were 156, 155, 156 and 150 differentially accumulated metabolites identified in stem, leaf, flower, and young pod, respectively, compared with root. Forty-seven potentially active flavonoid components in S. flavescens were identified using the PubChem and SwissADME databases. The 58 potential target proteins for these potentially active components were predicted to be important in the treatment of type 2 diabetes mellitus (T2DM) based on the SwissTargetPrediction and GeneCards database. These 58 target proteins were used to construct a protein-protein interaction network through the STRING database, from which we performed GO and KEGG functional enrichment analysis. The mechanisms by which S. flavescens flavonoids may be useful in the treatment of T2DM was further explored in a multi-level and systematic way based on a "component-target-pathway" network. Finally, ten key potentially effective components were identified and found to be mainly distributed in the roots, flowers, and pods, and their content varied significantly between tissues. The results predict that the key targets of S. flavescens flavonoids in the treatment of T2DM are AKT1, ESR1, EGFR, PIK3R1, TNF and PTGS2, and that they play a hypoglycemic role through the regulation of endocrine resistance, AGE-RAGE, the PI3K-Akt signaling pathway, EGFR tyrosine kinase inhibitor resistance and other signaling pathways. This analysis of the tissue distribution and network pharmacology of S. flavescens flavonoids provides a theoretical basis for further studies on S. flavescens metabolites, the rational development and utilization of the S. flavescens aboveground parts, and initiates a comprehensive exploration of the mechanisms by which S. flavescens can be used in the treatment of T2DM.

OBJECTIVE: To explore the status of apoptosis in human striatum derived neural stem cells (NSCs) aft er accutase dissociation and passage. METHODS: The NSCs were isolated from fetuses obtained through spontaneous abortion at 13- 18 weeks of pregnancy, which formed neurospheres in vitro. At passages of 3-5, the neurospheres were disassociated into single cell by accutase digestion and then passaged. At 1, 24 and 72 h after passage, the apoptosis of NSCs was measured by several methods, including active caspase-3 or TUNEL staining for fixed cells, Annexin V, Hoechst or PI staining for live cells. RESULTS: At all of the 3 time points, the staining of TUNEL and active caspase-3 overlapped perfectly. The apoptosis rate of NSCs increased significantly from 20%-25% at 1 h to 75%-80% at 24 h after passage (P<0.01). At 72 h, the apoptosis rate was significantly decreased as compared to that at 24 h time point because of the self-renewal and proliferation of survived NSCs (P<0.01). CONCLUSION Many cells in the neurospheres formed by human striatum-derived NSCs underwent apoptosis soon after accutase disassociation. For NSCs cultured in vitro, anti-apoptosis treatments might be a good method to increase the self-renewal and the proliferation of NSCs.
Apoptosis ; Caspase 3 ; metabolism ; Cells, Cultured ; Collagenases ; chemistry ; Corpus Striatum ; cytology ; Female ; Humans ; In Situ Nick-End Labeling ; Neural Stem Cells ; cytology ; Peptide Hydrolases ; chemistry ; Pregnancy

OBJECTIVETo explore the role of preoperative calcaneal traction in the treatment of Rüedi-Allgöwer II and III Pilon fracture.

METHODSFrom March 2005 to March 2010, 56 patients with Rüedi-Allgöwer II and III Pilon fracture were treated by calcaneal traction internal fixation on the second phase. There were 42 males and 14 females with an average age of 34.6 years old (ranged 18 to 68). Clinical outcomes were assessed according to Tormette Pilon and tibia fracture standard.

RESULTSAll patients were followed up from 9 to 36 months with an average of 18 months. All fracture obtained bone healing, the time ranged from 4.5 to 8.2 months with a mean of 6.2 months. No deep infection, breakage of internal fixation and other complications occurred. According to Tornetta evaluation criteria,35 cases got excellent results, 18 cases good,and 3 cases fair.

CONCLUSIONPreoperative calcaneal traction as a temporary fixing measure can provide a good environment for successful operation, and is an essential foundation for recovering functional, painless, load, movable joint.

Adolescent ; Adult ; Aged ; Calcaneus ; chemistry ; surgery ; Female ; Fracture Fixation, Internal ; Humans ; Male ; Middle Aged ; Preoperative Period ; Tibia ; chemistry ; surgery ; Tibial Fractures ; surgery ; Traction ; Young Adult

OBJECTIVE: To explore the relationship between the expression of interferon-induced protein with tetratricopetide repeats 1 (IFIT1) and liver cell apoptosis in the acute stress period after severe burns.
 METHODS: A total of 25 C57/129 adult mice were randomly divided into the normal control group (0 h) and the groups at 1, 6, 12 or 24 after severe burns (n=5 per group). A model with third degree (20% of the total body surface area) burn injury was established and then liver tissues were taken. IFIT1 expression was examined by Western blot. The expression of caspase-3 and -8 was measured by immunohistochemistry. Liver cell apoptosis was detected by terminal deoxynucleotidyl transferase mediated nick end labeling (TUNEL).
 RESULTS: After burns, IFIT1 expression was increased at 1 h, which reached the highest level at 
6 h followed by a decrease at 12 h, which reached minimum level at 24 h. The differences between groups were significant (P<0.01). The caspase-3 and -8 levels significantly increased after burns in a time-dependent manner (P<0.01). Although at 0 h and 1 h there was no significant increase in liver cell apoptosis, the increase reached significance from 6 h to 24 h (P<0.01).
 CONCLUSION The increase in IFIT1 expression after severe burns promotes liver cell apoptosis.
Animals ; Apoptosis ; Blotting, Western ; Burns ; metabolism ; Carrier Proteins ; metabolism ; Caspase 3 ; metabolism ; Caspase 8 ; metabolism ; Hepatocytes ; cytology ; In Situ Nick-End Labeling ; Liver ; cytology ; Mice ; Mice, 129 Strain ; Mice, Inbred C57BL ; RNA-Binding Proteins

Objective To investigate the current status and characteristics of the immersion experience of medical students and related influencing factors. Methods The stratified random sampling method was used to conduct a survey using an immersion experience questionnaire among 732 medical students in a full-time university. Epidata 3.1 software was used for data double entry and management, and SPSS 19.0 statistical software was used for data processing and statistical analysis. The questionnaire internal consistency reliability test was used to assess the validity of the questionnaire and a logistic regression analysis was used to identify the influencing factors for the immersion experience of medical students. Results Learning immersion experience was at a moderate level among the medical students (3.13±0.64). Level of performance (OR=1.177, 95％CI=0.988-1.402), degree of satisfaction with learning (OR=1.674, 95％ CI=1.341-2.089), and professional interest (OR=2.153, 95％CI=1 . 776-2 . 610 ) were the positive influencing factors for learning immersion (P<0.05) and were positively correlated with learning immersion experience . Grade , source of origin , duty , learning stress , school satisfaction, and life satisfaction had no influence on learning immersion experience (P>0.05). Conclusion Learning immersion experience is at a moderate level among medical students. Improvement of medical students' performance, learning satisfaction,and professional interest helps to improve their immersion experience. Strengthening the attention to work immersion and enhancing learning immersion experience among medical students are beneficial to medical student education and cultivation of qualified medical talents.