Objective:To discuss the effect of chrysophanol on hydrogen peroxide(H2O2)-induced oxidative damage of the EA.hy926 cells,and to clarify its therapeutic role in bronchopulmonary dysplasia(BPD)and related mechanism.Methods:The EA.hy926 cells were induced with 25,50,100,200,400,800,and 1 600 μmol·L-1 H2O2,and 8,16,32,64,128,and 256 μmol·L-1 chrysophanol.CCK-8 method was used to detect the viabilities of the EA.hy926 cells treated with different concentrations of H2O2 and chrysophanol.The cells were divided into control group,model group(200 μmol·L-1 H2O2),low dose of chrysophanol group(8 μmol·L-1 chrysophanol and 200 μmol·L-1 H2O2),and high dose of emodin group(256 μmol·L-1 chrysophanol and 200 μmol·L-1 H2O2).Western blotting method was used to detect the expression levels of apoptosis-inducing factor(AIF)protein in the cytoplasm and nucleus in various groups;immunofluorescence staining was used to detect the AIF nuclear translocation in the cells in various groups;kits were used to detect the activities of superoxide dismutase(SOD)and the levels of malondialdehyde(MDA),cysteinyl aspartate specific proteinase(Caspase)-8,and Caspase-9 in the cells in various groups.Results:Under different concentrations of H2O2,the viabilities of EA.hy926 cells showed an inverted S-shaped curve,with good cell viability,and the half-maximal inhibitory concentration(IC50)was 261.52 μmol·L-1.The cell model was induced by 200 μmol·L-1 H2O2 for 24 h.As the increaseing of concentration of chrysophanol,there was no significant change of the viability in the EA.hy926 cells(P>0.05),and interventions were performed using 8 and 256 μmol·L-1 chrysophanol.The Western blotting results showed that compared with control group,the expression level of AIF protein in the nucleus in model group was significantly increased(P<0.05),and the expression level of AIF protein in the cytoplasm was significantly decreased(P<0.05).Compared with model group,the expression levels of AIF protein in the nucleus in both low and high doses of chrysophanol groups were significantly decreased(P<0.05),and the expression level of AIF protein in the cytoplasm was significantly increased(P<0.05).The immunofluorescence staining results showed that AIF was less localized in the nucleus in the cells in control group.Compared with control group,the positive value of AIF nuclear translocation in model group was significantly increased(P<0.05);compared with model group,the positive values of AIF nuclear translocation in both low and high doses of chrysophanol groups were significantly decreased(P<0.05).Compared with control group,the activity of SOD in the cells in model group was significantly decreased(P<0.05),and the level of MDA was significantly increased(P<0.01).Compared with model group,the activities of SOD in the cells in low and high doses of chrysophanol groups were significantly increased(P<0.05),and the level of MDA was significantly decreased(P<0.05 or P<0.01).There were no significant differences in the levels of Caspase-8 and Caspase-9 in the cells among various groups(P>0.05).Conclusion:Chrysophanol improves the H2O2-induced apoptosis of the EA.hy926 cells by inhibiting the oxidative stress and AIF nuclear translocation,which may be beneficial for the treatment of BPD.

Pyroptosis is a programmed death of inflammatory cells triggered by pathogen invasion,dependent on caspase activation,through both classical and non-classical pyroptosis pathways.Cell pyroptosis is related to the occurrence and development of a variety of animal infectious diseases caused by microbial infection.After microorganisms invading,cells are stimulated by pathology-re-lated molecular patterns,causing strong immune response,stimulating inflammatory signaling pathways,and then activating inflammasome,leading to pyroptosis.The immune system has e-volved multiple mechanisms to fight microbial infections and regulate inflammatory responses.The innate immune system,by recognizing microbial molecules in pathogens and responding quickly by producing inflammasome and activating pyroptosis,helps clear pathogens to prevent infection and maintain the normal functioning of the body.A thorough study of the pathogenesis and immune es-cape mechanism of cell pyroptosis in animal infectious diseases will provide a new direction for the treatment of animal infectious diseases.

Objective:To explore the application effect of preoperative autologous blood localization method in laparoscopic resection of gastric stromal tumors in unfavorable areas of the stomach.Methods:A retrospective analysis was conducted on the case data of 40 patients with gastric stromal tumors in unfavorable locations admitted to Jinjiang Hospital from January 2019 to December 2022. The patients were divided into a control group (intraoperative endoscopic localization method) and an autologous blood localization group according to different intraoperative lesion localization methods, with 20 cases in each group. The surgical time, intraoperative blood loss, hospitalization time, postoperative exhaust time, and adverse reactions were compared between the two groups.Results:The surgery time of the autologous blood localization group was shorter than that of the control group [(92.30±8.80)min vs (108.20±14.87)min, P<0.05]. There was no statistically significant difference in intraoperative bleeding, hospitalization time, and postoperative exhaust time between the two groups (all P>0.05). Two groups of patients did not show an increase in inflammatory indicators such as white blood cells and C-reactive protein on the day after surgery. Both groups of patients did not experience adverse reactions such as fever, abdominal pain, or postoperative complications. Conclusions:The autologous blood injection localization method provides a safe, simple, and effective method for preoperative localization of gastric stromal tumors in unfavorable areas of the stomach under laparoscopy, and is worthy of clinical promotion and use.

OBJECTIVE To explore the intestinal absorption characteristics of saikosaponins. METHODS Based on everted intestinal sac model， using accumulative absorption amount （Q） and absorption rate constant （Ka） as indexes， UHPLC-MS/MS technique as a method， the absorption of saikosaponin A， B2， C， D and F from total saponins of Bupleurum chinense （8 g/mL， by crude drug） in the duodenum， jejunum and ileum was detected. RESULTS The correlation coefficients （r） of the regression equations for the absorption of saikosaponins A， B2， C and F in the duodenum， jejunum and ileum were all higher than 0.95， while the r of saikosaponin D in the above intestinal segments was lower than 0.95； compared with the absorption of the same composition in the duodenum， the Q and Ka of saikosaponin A and C circulating in jejunum and ileum for 120 min， as well as the Q and Ka of saikosaponin F circulating in the ileum for 120 min were significantly decreased （P＜0.05）. CONCLUSIONS Saikosaponin A and the other 4 saikosaponins are all absorbed in the duodenum， jejunum and ileum； among them， saikosaponin A， B2， C and F are linearly absorbed， which conforms to the zero-order absorption characteristics， but saikosaponin D shows non- linear absorption.

Objective:To explore the short-term efficacy of perioperative fecal microbiota transplantation combined with nutritional support in patients with radiation-induced enteritis complicated by intestinal obstruction.Methods:The cohort of this prospective cohort study comprised 45 patients (nine men and 36 women) with radiation-induced enteritis complicated by intestinal obstruction admitted to Shanghai Tenth People's Hospital Affiliated to Tongji University from January 2022 to October 2022. The median age was 53 (42–65) years. Thirty-five of the patients had gynecological tumors and 10 colorectal malignancies. The patients were randomly allocated to a fecal microbiota transplantation group of 20 patients who underwent fecal microbiota transplantation starting 2 weeks before surgery for 6 days, in addition to receiving conventional perioperative treatment, and a conventional treatment group of 25 patients who only received nutritional support during the perioperative period. There were no significant differences in baseline characteristics (sex, age, preoperative nutritional indices, and surgical procedure) between the two groups (all P>0.05). Postoperative recovery (time to passing flatus or a bowel movement, length of stay) and complications were compared between the two groups. Postoperative complications within 30 days after surgery classified in accordance with the international Clavien–Dindo classification of surgical complications (I–V) were statistically analyzed. Improvement in gastrointestinal symptoms, namely abdominal pain, distension, diarrhea, and rectal bleeding) and gastrointestinal quality of life scores (which include 36 problems rated 0–144 points related to physical, psychological, social activities and family life; the lower the score, the more severe the symptoms) were compared between the two groups. Nutritional recovery was assessed by body mass, body mass index, total protein, albumin, prealbumin, and hemoglobin. Results:Compared with the conventional treatment group, the postoperative hospital stay was shorter in the fecal microbiota transplantation group (8.0±4.3 days vs. 11.2±5.4 days, t=2.157, P=0.037) and the time to passage of flatus or having a bowel movement was earlier (2.2±3.2 days vs. 3.9±2.3 days, t=2.072, P=0.044). There were 26 postoperative complications in the fecal microbiota transplantation group and 59 in the conventional treatment group. There were 20 and 36 Grade I to II complications and no and three Grade III to V complications in the transplantation and conventional treatment group, respectively. The overall grade of complication did not differ significantly between the two groups ( P=0.544). However, the incidence of postoperative intestinal inflammatory obstruction was lower in the fecal microbiota transplantation than the conventional treatment group (10.0% [2/20] vs. 40.0% [10/25], P=0.040). One patient in the conventional treatment group died. This patient had complete intestinal obstruction complicated by severe malnutrition preoperatively, and an intestinal fistula complicated by abdominal infection postoperatively, and died despite active treatment. Nineteen and 23 patients in the transplantation and conventional treatment group, respectively, attended for follow-up 1 month after surgery; 19 and 21, respectively, attended for follow-up 3 months after surgery, and 17 and 20, respectively, attended for follow-up 6 months after surgery. There were no significant differences between the two groups in abdominal pain or rectal bleeding 1, 3, or 6 months after surgery (all P>0.05). One month after surgery, the incidence of abdominal distension and diarrhea was lower in the fecal microbiota transplantation than in the conventional treatment group (3/19 vs. 48.0% [11/23], P=0.048; 3/19 vs. 52.2% [12/23], P=0.023). However, at the 3 and 6 month follow-ups the incidence of abdominal distension and diarrhea had gradually decreased in both groups and the differences between the groups were not statistically significant ( P>0.05 for all). Scores for gastrointestinal quality of life improved significantly in both treatment groups compared with preoperative values ( F=71.250, P<0.001; F=79.130, P<0.001, respectively). Scores for gastrointestinal quality of life were higher in the fecal microbiota transplantation than the conventional treatment group at all follow-up time points ( P<0.05). One-way ANOVA showed that body mass, body mass index, and total protein, albumin and hemoglobin concentrations improved in both groups compared with preoperative values (all P<0.05). Prealbumin concentration improved significantly in the transplantation ( F=5.514, P=0.002), but not in the conventional, group ( F=1.535, P=0.211). The improvements in body mass, body mass index, total protein, and albumin were better in the fecal microbiota transplantation than conventional treatment group at 3 and 6 months of follow-up (all P<0.05). Conclusion:Perioperative fecal microbiota transplantation combined with nutritional support is effective in improving early postoperative nutritional status and quality of life in patients with radiation-induced enteritis complicated by intestinal obstruction.

Objective:To explore the short-term efficacy of perioperative fecal microbiota transplantation combined with nutritional support in patients with radiation-induced enteritis complicated by intestinal obstruction.Methods:The cohort of this prospective cohort study comprised 45 patients (nine men and 36 women) with radiation-induced enteritis complicated by intestinal obstruction admitted to Shanghai Tenth People's Hospital Affiliated to Tongji University from January 2022 to October 2022. The median age was 53 (42–65) years. Thirty-five of the patients had gynecological tumors and 10 colorectal malignancies. The patients were randomly allocated to a fecal microbiota transplantation group of 20 patients who underwent fecal microbiota transplantation starting 2 weeks before surgery for 6 days, in addition to receiving conventional perioperative treatment, and a conventional treatment group of 25 patients who only received nutritional support during the perioperative period. There were no significant differences in baseline characteristics (sex, age, preoperative nutritional indices, and surgical procedure) between the two groups (all P>0.05). Postoperative recovery (time to passing flatus or a bowel movement, length of stay) and complications were compared between the two groups. Postoperative complications within 30 days after surgery classified in accordance with the international Clavien–Dindo classification of surgical complications (I–V) were statistically analyzed. Improvement in gastrointestinal symptoms, namely abdominal pain, distension, diarrhea, and rectal bleeding) and gastrointestinal quality of life scores (which include 36 problems rated 0–144 points related to physical, psychological, social activities and family life; the lower the score, the more severe the symptoms) were compared between the two groups. Nutritional recovery was assessed by body mass, body mass index, total protein, albumin, prealbumin, and hemoglobin. Results:Compared with the conventional treatment group, the postoperative hospital stay was shorter in the fecal microbiota transplantation group (8.0±4.3 days vs. 11.2±5.4 days, t=2.157, P=0.037) and the time to passage of flatus or having a bowel movement was earlier (2.2±3.2 days vs. 3.9±2.3 days, t=2.072, P=0.044). There were 26 postoperative complications in the fecal microbiota transplantation group and 59 in the conventional treatment group. There were 20 and 36 Grade I to II complications and no and three Grade III to V complications in the transplantation and conventional treatment group, respectively. The overall grade of complication did not differ significantly between the two groups ( P=0.544). However, the incidence of postoperative intestinal inflammatory obstruction was lower in the fecal microbiota transplantation than the conventional treatment group (10.0% [2/20] vs. 40.0% [10/25], P=0.040). One patient in the conventional treatment group died. This patient had complete intestinal obstruction complicated by severe malnutrition preoperatively, and an intestinal fistula complicated by abdominal infection postoperatively, and died despite active treatment. Nineteen and 23 patients in the transplantation and conventional treatment group, respectively, attended for follow-up 1 month after surgery; 19 and 21, respectively, attended for follow-up 3 months after surgery, and 17 and 20, respectively, attended for follow-up 6 months after surgery. There were no significant differences between the two groups in abdominal pain or rectal bleeding 1, 3, or 6 months after surgery (all P>0.05). One month after surgery, the incidence of abdominal distension and diarrhea was lower in the fecal microbiota transplantation than in the conventional treatment group (3/19 vs. 48.0% [11/23], P=0.048; 3/19 vs. 52.2% [12/23], P=0.023). However, at the 3 and 6 month follow-ups the incidence of abdominal distension and diarrhea had gradually decreased in both groups and the differences between the groups were not statistically significant ( P>0.05 for all). Scores for gastrointestinal quality of life improved significantly in both treatment groups compared with preoperative values ( F=71.250, P<0.001; F=79.130, P<0.001, respectively). Scores for gastrointestinal quality of life were higher in the fecal microbiota transplantation than the conventional treatment group at all follow-up time points ( P<0.05). One-way ANOVA showed that body mass, body mass index, and total protein, albumin and hemoglobin concentrations improved in both groups compared with preoperative values (all P<0.05). Prealbumin concentration improved significantly in the transplantation ( F=5.514, P=0.002), but not in the conventional, group ( F=1.535, P=0.211). The improvements in body mass, body mass index, total protein, and albumin were better in the fecal microbiota transplantation than conventional treatment group at 3 and 6 months of follow-up (all P<0.05). Conclusion:Perioperative fecal microbiota transplantation combined with nutritional support is effective in improving early postoperative nutritional status and quality of life in patients with radiation-induced enteritis complicated by intestinal obstruction.

Studies have shown that spatial attention remarkably affects the trial-to-trial response variability shared between neurons. Difficulty in the attentional task adjusts how much concentration we maintain on what is currently important and what is filtered as irrelevant sensory information. However, how task difficulty mediates the interactions between neurons with separated receptive fields (RFs) that are attended to or attended away is still not clear. We examined spike count correlations between single-unit activities recorded simultaneously in the primary visual cortex (V1) while monkeys performed a spatial attention task with two levels of difficulty. Moreover, the RFs of the two neurons recorded were non-overlapping to allow us to study fluctuations in the correlated responses between competing visual inputs when the focus of attention was allocated to the RF of one neuron. While increasing difficulty in the spatial attention task, spike count correlations were either decreased to become negative between neuronal pairs, implying competition among them, with one neuron (or none) exhibiting attentional enhancement of firing rate, or increased to become positive, suggesting inter-neuronal cooperation, with one of the pair showing attentional suppression of spiking responses. Besides, the modulation of spike count correlations by task difficulty was independent of the attended locations. These findings provide evidence that task difficulty affects the functional interactions between different neuronal pools in V1 when selective attention resolves the spatial competition.
Animals ; Attention/physiology* ; Macaca mulatta ; Neurons/physiology* ; Photic Stimulation ; Primary Visual Cortex ; Visual Cortex/physiology*

Objective:To analyze the feasibility and clinical efficacy of reperfusion-expanding-thrombectomy-stenting (RETS) technique in the endovascular treatment of acute carotid artery tandem lesion.Methods:The general clinical data of 88 patients with carotid artery tandem lesion who received emergency endovascular treatment from January 2018 to December 2020 in Department of Neurology, Linyi People′s Hospital were reviewed, the Modified Rankin Scale (mRS) was used as the evaluation standard for the prognosis of patients at 90 days after endovascular treatment, and the clinical data were analyzed, including the recanalization (modified thrombolysis in cerebral infarction ≥2b), perioperative complications and 90-day prognosis, and good prognosis was defined as a mRS score of 0-2.Results:A total of 88 patients with tandem carotid artery disease were included,48 of whom were treated with RETS technique, 40 were treated with anterograde approach. Compared with antegrade recanalization, RETS technique had significant differences in the time from puncture to recanalization [(72.06±17.29) min vs (98.88±26.09) min, t=-5.56, P<0.001] and the primary recanalization rate [35/48(73.0%) vs 21/40(52.5%),χ2=3.93 ,P=0.047], with statistically significant difference. There was no significant difference in clinical prognosis and surgical complications between the two methods (all P>0.05). Conclusions:RETS technique can shorten the operation time and increase the primary recanalization rate. RETS technique is safe and feasible for the treatment of carotid tandem lesions.

Animals ; Antibodies, Neutralizing/biosynthesis* ; Antibodies, Viral/biosynthesis* ; Body Weight/immunology* ; COVID-19/virology* ; Disease Models, Animal ; Disease Progression ; Humans ; Immunohistochemistry ; Lung/virology* ; Male ; Mesocricetus ; Nasal Cavity/virology* ; RNA, Viral/immunology* ; SARS-CoV-2/pathogenicity* ; Severity of Illness Index ; Viral Load

Objective: To summarize the experience of diagnosis and treatment of superior mesenteric artery compression syndrome (SMACS) secondary to chronic constipation according to the concept of Lee′s triad syndrome. Methods: The concept of Lee′s triad syndrome: (1) clinical symptoms: triad of constipation, malnutrition, upper gastrointestinal obstruction (vomiting, difficulty in eating); (2) anatomical manifestations: with triple anatomy anomaly of transverse colon sagging, elevated spleen flexure, and mesentery arterial compression; (3) treatment: with triple treatment of enteral nutrition support, chest-knee posture and fecal microbiota transplantation. A descriptive cohort study was performed. According to Lee′s triad syndrome criteria, clinical data of 78 patients with superior mesenteric artery compression syndrome secondary to chronic constipation in the Tenth People′s Hospital of Tongji University and General Hospital of Eastern Theater Command from June 2004 to November 2018 were prospectively collected, including basic information, symptoms and signs, imaging findings, nutritional indicators, gastrointestinal quality of life index (GIQLI) and Wexner defecation score. The above parameters based on Lee′s triad syndrome criteria were followed up and recorded at 1, 3, 6, 12 months after comprehensive treatment. Results: All the patients had Lee′s triple symptoms of constipation, malnutrition, upper gastrointestinal obstruction (vomiting, eating difficulties), and triple anatomy anomaly of transverse colon sagging, elevated spleen curvature, and mesentery arterial compression before treatment. After triple treatment of enteral nutrition support, chest-knee posture, and fecal microbiota transplantation, 69 (88.5%) patients had a significant improvement of symptoms, and 9 patients had no significant improvement of symptoms and then eventually received surgery. The 69 cases without operation received follow-up for 12 months. All the patients eventually returned to normal eating, and upper gastrointestinal angiography and superior mesenteric artery imaging showed duodenal compression disappeared. After 1 month, the constipation-related indexes were improved. After 12 months, the number of autonomous defecation per week increased from 1.0±0.8 to 5.0±1.6 (P<0.001). The GIQLI score increased from 52.7±8.5 to 93.2±7.5 (P<0.001), and the Wexner score decreased from 19.1±2.5 to 6.2±2.1 (P<0.001). After 1 month, nutritional indexes were improved gradually. After 12 months, the BMI increased from (17.9±1.8) kg/m² to (21.0±1.3) kg/m², total protein increased from (65.2±5.7) g/L to (68.3±4.2) g/L, albumin increased from (32.1±5.1) g/L to (40.4±3.0) g/L, prealbumin increased from (163.2±53.7) mg/L to (259.1±45.6) mg/L, fibrinogen increased from (1.9±0.5) g/L to (2.4±0.5) g/L, whose differences were statistically significant (all P<0.001). Upper gastrointestinal angiography and superior mesenteric artery imaging showed duodenal compression were relieved. The angle between superior mesenteric artery and abdominal aorta increased from (17.4±3.8)° to (37.8±5.8)° (t=-22.26, P<0.001). Conclusion When patients with SMACS secondary to chronic constipation have Lee′s triple symptoms and triple anatomy anomaly, the triple combination treatment of enteral nutrition support, chest-knee posture and fecal microbiota transplantation should be applied.