Background and purpose:Intensity-modulated radiation therapy (IMRT) enables the delivery of higher radiation dose to the primary tumor target, while sparing the organs and tissues at risk (OARs). Chemotherapy is an effective means to prevent distant metastasis. The purpose of this study was to observe clinical effect of concurrent intensity-modulated radiation therapy and chemotherapy for advanced esophageal carcinoma. Methods: A total number of 62 cases of advanced esophageal carcinoma were divided into two groups. There were 32 cases in concurrent chemoradiotherapy group, and 30 cases were in radiotherapy alone group. The patients in two groups were both used IMRT radiotherapy, while the patients of concurrent chemoradiotherapy group were plused adjuvant chemotherapy. The chemotherapy regimen was TP. Twenty-eight days was a treatment cycle, 2 treatment cycles were lasted during chemoradiotherapy.After that, recent curative effect and toxicside reaction were compared between two groups. Results: The total relief rate (CR+PR) in concurrent chemoradiotherapy group was 93.8%. The total relief rate in radiotherapy alone group was 76.7%. There were signiifcant differences between the two groups (P<0.05). One-year local response rate(84.4%) and 2-year local response rate (59.4%) in concurrent chemoradiotherapy group were both higher than those (70.0%, 36.7%) in radiotherapy alone group (P<0.05), while the survival rate was similar between the two groups (P>0.05). Toxicside reaction in concurrent chemoradiotherapy group, including leucocytes decrease, radioactive esophagitis andⅢ,Ⅳtoxicity, were higher than those in radiotherapy alone group (P<0.05). Conclusion:After treating advanced esophageal carcinoma with concurrent intensity-modulated radiation therapy and chemotherapy, the recent curative effect and the local response were ifne, while toxicity was more serious.

Chitosan(CS)surface was modified with hydrophobic octyl groups to prepare N-octyl chitosan(nitro-gen-octyl chitosan;OC).Then hydrophilic group carboxyl-polyethylene glycol-amino (PEG);tumor-targeting lig-and D-glucosamine(DG);and membrane-penetrating peptide 9-D-arginine(9R)were linked to OC successively. Then the DG and 9R modified chitosan micelle (DG/9R-PEG-OC)with tumor-targeting and transmembrane effect was prepared.By hydrogen nuclear magnetic resonance spectrometer (1 H NMR)and sodium dodecyl sul-fate polyacryl amide gel electrophoresis(SDS-PAGE);the successful formation of DG/9R-PEG-OC was certified;with particle size of 151.8 nm and Zeta potential of 16.5 mV.The morphology of chitosan micelle observed by transmission electron microscope was homogeneous spherical structure.The drug loading content (DLC)(using fluorescein as a model drug)and encapsulation efficiency (EE)were about 28.2% and 75.0% measured by UV-visible spectrophotometer.Meanwhile;the drug showed a controlled releasing profile out of the micelle.Cellu-lar uptake experiments indicated DG/9 R-PEG-OC micelle had a significant tumor-tageting and transmembrane effects;especially on HepG2 cells;which exbihited high expression of the glucose transporter.Thus DG/9R-PEG-OC micelle could be a promising drug targeted delivery system of hydrophobic antitumor drugs.

Objective To analyze whether β1,4-galactosyltransferase-Ⅰ(β1,4-GaiT-Ⅰ)expression correlates with the expression of tumor necrosis factor(TNF)-α in osteoarthritis(OA).Methods Synovial tissue samples from eight OA patients and eight healthy people were obtained as the experimental group and controls respectively.The mRNA levels of β1,4-GalT-Ⅰ and TNF-α were measured by reverse transcriptionpolymerase chain reaction(RT-PCR)and real-time PCR.Enzyme linked immunosorbent assay(ELISA)was used to test the expression of TNF-α in the protein level.Cellular colocalization of β1,4-GalT-Ⅰ and TNF-α was analyzed by double immunofluorescence.ANOVA and t-test was used for statistical analysis.Results ①Compared with the control group[β1,4-GalT-Ⅰ(0.48±0.09),TNF-α(0.46±0.07)],the expression of β1,4-GalT-Ⅰ(0.94±0.16)and TNF-α(1.19±0.19)were significantly increased in OA synovial tissue(t=3.47,t=4.06,P＜0.01)and there was colocalization between β1,4-GalT-Ⅰ and TNF-α;② Lipopolysaccharide (LPS)could induce fibroblast-like synoviocytes(FLSs)β1,4-GalT-Ⅰ[11.2±0.9 vs 2.9±0.5(dose effect),22.3±2.3 vs 4.4±0.9(time effect),F=83.03,F=157.58,P＜0.05]overexpression;③ LPS could induce FLSs TNF-α[(1256±96)vs(101±7)pg/ml,F=431.96,P＜0.01]overexpression;④ Not only endogenous TNF-α,but exogenous TNF-α could induce FLSs β1,4-GalT-Ⅰ[23.2±1.9 vs 8.4±1.3(dose effect),23.9±1.8 vs 11.5±1.3(time effect),F=124,F=93.6,P＜0.05]overexpression.Conclusion It is possible that FLSs mayuse TNF-αto control β1,4-GalT-Ⅰ functions during inflammation in OA.

Objective: To report the first case of lymphomatoid gastropathy in China, and to demonstrate the clinical characteristics, diagnostic approach, treatment and prognosis in this kind of patients. Methods: One patient was diagnosed as lymphomatoid gastropathy at Peking Union Medical College Hospital, and her clinical characteristics, lab data, treatment and follow-up outcomes were reviewed. Results: A case of a 51-year-old female was presented, who underwent esophagogastroduodenoscopy (EGD) due to slight epigastric discomfort. EGD revealed multiple ulcers and erosions. Biopsies showed atypical lymphocytes infiltration with CD3(+), CD56(+), CD20(-), CD8(-), TIA(+), Granzyme B(-) and Ki-67 (75%). Epstein-Barr virus-encoded RNA in situ hybridization was negative. Four months later, repeated EGD examination showed regression of the lesions without specific treatment. Conclusion Lymphomatoid gastropathy was a unique disease entity mimicking NK/T-cell lymphomas in pathology, with the quite different profile of treatment and prognosis. It’s important to consider this issue during the differential diagnosis to avoid any excessive treatment.

BACKGROUND:Intertrochanteric fracture of femur often occurs in the elderly,and there will be a large amount of hidden blood loss after surgery.Reducing hidden blood loss can decrease complications and hospital stay. OBJECTIVE:To evaluate the effect of prolonged use of tranexamic acid on hidden blood loss after proximal femoral nail antirotation implantation in senile intertrochanteric fractures. METHODS:From January 2022 to May 2023,62 elderly admitted patients with intertrochanteric fracture of femur were selected from Zigong Fourth People's Hospital.All of them were treated with proximal femoral nail antirotation implantation after closed reduction on the traction bed.According to the use time of tranexamic acid,they were divided into two groups.In the control group(n=38),1 g tranexamic acid was given intravenically 15-30 minutes before incision,and 1 g was added 3 hours later.Based on the control group,the trial group(n=24)was given 1 g tranexamic acid intravenously once for 12 hours on the first day after surgery.Blood routine examinations were performed before surgery,on the day after surgery,and on the first,third and fifth days after surgery.Hemoglobin and hematocrit were counted.The theoretical total blood loss was calculated by Cross equation,and the incidence of complications in the two groups was recorded. RESULTS AND CONCLUSION:(1)Through statistical analysis,there was no significant difference in the amount of dominant blood loss between the two groups(P>0.05).(2)The number of grams of hemoglobin decreased,total blood loss and hidden blood loss in the trial group during perioperative period were lower than those in the control group,and the differences were statistically significant(P<0.05).(3)The hemoglobin values of the trial group on day 3 after surgery,and the hematocrit values on days 1 and 3 after surgery were higher than those of the control group,with statistical significance(P<0.05).(4)The hemoglobin and platelet count showed a downward trend after surgery,and the hemoglobin value was the lowest value on day 3,and the platelet value was the lowest value on day 1 after surgery,and then began to rise in both groups.(5)There was no significant difference in postoperative complications between the two groups(P>0.05).(6)The results show that prolonging use of tranatemic acid can effectively reduce the hidden blood loss in the treatment of femoral intertrochanteric fracture with proximal anti-rotation intramedullary nail,and does not increase the risk of complications.

Trauma can trigger systemic pathological states, including coagulation disorders, tissue damage and metabolic disturbances, in which immune responses are extensively involved and play an important role. As an important component of innate immunity, the complement system is known to be implicated in the bactericidal process of lysis in vivo and can also induce immune inflammation in the body, but its role in trauma is not clear. The authors summarize the interaction between complement system activation and immune system, and the clinical translation of complement system intervention after trauma from the aspects of posttraumatic innate immunity, acquired immunity as well as there internal bridging, in order to provide more ideas for clinical trauma treatment.

The condition of critically ill patients changes rapidly, involving pathological changes in multiple systems and organs throughout the body. Exploring the causal relationship of mechanisms can further reveal etiology, treatment, and prognosis of diseases. However, traditional prospective studies in the field of critical care are still subject to numerous limitations. As an emerging research method, Mendelian randomization (MR) analysis uses genetic variation to provide causal evidence for instrumental variables, which is expected to provide clues in critical diseases. This article systematically describes the research progresson the application of MR analysis in critical care medicine from four aspects: the principle of MR analysis, the difference between MR analysis and randomized controlled trial (RCT), the use of MR analysis in the field of critical illness, and the possible methods of application, aiming to provide possible directions for the research in this field.
Humans ; Mendelian Randomization Analysis/methods* ; Genetic Variation ; Causality ; Research Design

Objective To reinforce the awareness of colorectal endometriosis (EM) in colonoscopy examination.Methods Patients diagnosed as colorectal EM at Peking Union Medical College Hospital between February 2002 and February 2017 were enrolled in this study.The clinical characteristics and endoscopic features of EM lesions were summarized and compared between pathologically positive group and negative group.Results A total of 34 cases were included with average age of (38.3± 8.9) years old.All EM lesions located within rectum and sigmoid colon.The endoscopic lesions manifested as protrusion in 21 cases (61.8％) and protrusion-depression in 13 cases (38.2％),local stenosis in 8 cases (23.5％);erosive surface in 33 cases (97.1％) with local spontaneous hemorrhage in 4 cases (11.8％);nodal surface in 23 cases (67.6％),and lymphangiectasis base in 9 cases (26.4％).Endoscopic biopsy specimens were obtained in all cases with average 3 (2,4) pieces.Positive results were found only in 4 patients (11.8％) with 3 endometriosis and one (endometrial) adenosarcoma.Compared with negative group,spontaneous hemorrhage was more frequent in positive group (2/4 vs.2/30,P=0.013).Mean biopsy sample number was significantly larger in positive group (5 vs.3,P=0.004).Conclusions Colorectal endometriosis is mostly located within rectosigmoid region.Endoscopic features mainly include protrusion or protrusion-depression lesions with erosive and nodular surface,or local stenosis.Spontaneous hemorrhage under colonoscopy yields higher positive rate for biopsy,thus increasing biopsy sample numbers may improve pathology results.

OBJECTIVE：To prov ide reference for mobilizing the work enthusiasm of clinical pharmacists ，and further promoting the strategic objectives of performance appraisal in three-level public hospitals （“National examination ”for short ）. METHODS：A department performance appraisal team was established ，and a key performance indicator system consisting of 4 first-level indicators and 9 second-level indicators was constructed by using literature retrieval and expert consultation. The performance distribution method of double assessment of performance score and performance score was established ，and a performance publicity and feedback performance mechanism was formed. Relevant data were collected to compare the core work indicators of clinical pharmacists ，use intensity of antibiotics ，compliance rate of essential drugs in our hospital from Apr. to Dec. 2019（before implementation ）and Apr. to Dec. 2020（after implementation ）. RESULTS ：After the implementation of performance appraisal scheme ，the total number of medication recommendations of clinical pharmacists increased from 1 192 to 5 226，with an increase of 338.42％；the number of medication suggestions received increased from 846 to 4 855，with an increase of 473.88％； and the rate of drug suggestions received increased from 70.97％ to 92.90％；the number of pharmaceutical consultation increased from 195 to 1 284，with an increase of 558.46％；the number of drug counseling increased from 1 203 to 2 719，increasing by 126.02％. Form Apr. to Dec. 2020，the number of patient safety medication evaluation forms reached 660. The antibiotics use density（AUD）in clinical departments of 13 clinical pharmacists were decreased to different extent after the implementation of performance appraisal scheme ，the decine rate was 92.31％（12/13），and the compliance rate was 69.23％（9/13）；utilization rate of essential medicine among outpatients of 11 clinical pharmacists ’clinical departments had achieved positive growth ，and those among inpatients of 2 clinical pharmacists ’clinical departments had achieved positive growth. CONCLUSIONS ：The performance appraisal system of clinical pharm acists formulated by our hospital links the “National examination ”index with the performance ， appraisal of clinical pharmacists ，which can provide ideas for No.2018sxzx57，No.2020jyxm2328，No.2020jyxm2307） the performance appraisal of three-level public hospitals and help to promote the high-quality and sustainable development of hospital pharmaceutical care.

Tumor-targeted immunotherapy is a remarkable breakthrough, offering the inimitable advantage of specific tumoricidal effects with reduced immune-associated cytotoxicity. However, existing platforms suffer from low efficacy, inability to induce strong immunogenic cell death (ICD), and restrained capacity of transforming immune-deserted tumors into immune-cultivated ones. Here, an innovative platform, perfluorooctyl bromide (PFOB) nanoemulsions holding MnO₂ nanoparticles (MBP), was developed to orchestrate cancer immunotherapy, serving as a theranostic nanoagent for MRI/CT dual-modality imaging and advanced ICD. By simultaneously depleting the GSH and eliciting the ICD effect via high-intensity focused ultrasound (HIFU) therapy, the MBP nanomedicine can regulate the tumor immune microenvironment by inducing maturation of dendritic cells (DCs) and facilitating the activation of CD8⁺ and CD4⁺ T cells. The synergistic GSH depletion and HIFU ablation also amplify the inhibition of tumor growth and lung metastasis. Together, these findings inaugurate a new strategy of tumor-targeted immunotherapy, realizing a novel therapeutics paradigm with great clinical significance.