The current situation of medical simulation technology was introduced when applied in medical service of foreign armies.The current situation and problems of medical simulation technology in mobile medical service detachment training of the PLA were described.Some suggestions were put forward including completing medical simulation management system,optimizing personnel managment and training mode and promoting standardization and modular construction of medical simulation system.References were provided for enhancing combat-oriented training and medical service support capability of levels of medical service institutions and mobile medical service detachment of the PLA.[Chinese Medical Equipment Journal,2024,45(10):88-92]

Trimethylamine N-oxide(TMAO), a metabolite of gut microbiota, is closely associated with chronic kidney disease(CKD). It can aggravate the kidney injury and promote the occurrence of complications of CKD mainly by inducing renal fibroblast activation, vascular endothelial inflammation, macrophage foaming, platelet hyperreactivity, and inhibition of reverse cholesterol transport. Thus it is of great significance for clinical treatment of CKD to regulate circulating TMAO and alleviate its induced body damage. Currently, therapeutic strategies for TMAO regulation include dietary structure adjustment, lifestyle intervention, intestinal microflora regulation, and inhibition of intestinal trimethylamine synthesis and liver trimethylamine oxidation. Chinese medicinal herbs have the clinical advantage of multi-component and multi-target effects, and application of traditional Chinese medicine(TCM) to synergistically regulating TMAO and improving CKD via multiple pathways has broad prospects. This study systematically reviewed the clinical relevance and mechanism of TMAO in aggravating CKD renal function deterioration and complication progression. In addition, the effect and mechanism of TCM in improving TMAO-induced kidney injury, cardiovascular disease, hyperlipidemia, thrombosis and osteoporosis were summarized. The results provided a theoretical basis for TCM in attenuating gut microbiota-derived metabolite TMAO and improving CKD, as well as a basis and direction for in-depth clinical development and mechanism research in the future.
Humans ; Gastrointestinal Microbiome ; Medicine, Chinese Traditional ; Renal Insufficiency, Chronic/drug therapy*

In recent years, fibroblast activation protein (FAP) has emerged as an attractive target for the diagnosis and radiotherapy of cancers using FAP-specific radioligands. Herein, we aimed to design a novel ¹⁸F-labeled FAP tracer ([¹⁸F]AlF-P-FAPI) for FAP imaging and evaluated its potential for clinical application. The [¹⁸F]AlF-P-FAPI novel tracer was prepared in an automated manner within 42 min with a non-decay corrected radiochemical yield of 32 ± 6% (n = 8). Among A549-FAP cells, [¹⁸F]AlF-P-FAPI demonstrated specific uptake, rapid internalization, and low cellular efflux. Compared to the patent tracer [¹⁸F]FAPI-42, [¹⁸F]AlF-P-FAPI exhibited lower levels of cellular efflux in the A549-FAP cells and higher stability in vivo. Micro-PET imaging in the A549-FAP tumor model indicated higher specific tumor uptake of [¹⁸F]AlF-P-FAPI (7.0 ± 1.0% ID/g) compared to patent tracers [¹⁸F]FAPI-42 (3.2 ± 0.6% ID/g) and [⁶⁸Ga]Ga-FAPI-04 (2.7 ± 0.5% ID/g). Furthermore, in an initial diagnostic application in a patient with nasopharyngeal cancer, [¹⁸F]AlF-P-FAPI and [¹⁸F]FDG PET/CT showed comparable results for both primary tumors and lymph node metastases. These results suggest that [¹⁸F]AlF-P-FAPI can be conveniently prepared, with promising characteristics in the preclinical evaluation. The feasibility of FAP imaging was demonstrated using PET studies.

Background Ultrasound-guided continuous thoracic paravertebral block can provide pain-relieving and opioid-sparing effects in patients receiving open hepatectomy. We hypothesize that these effects may improve the quality of recovery (QoR) after open hepatectomy. Methods Seventy-six patients undergoing open hepatectomy were randomized to receive a continuous thoracic paravertebral block with ropivacaine (CTPVB group) or normal saline (control group). All patients received patient-controlled intravenous analgesia with morphine postoperatively for 48 hours. The primary outcome was the global Chinese 15-item Quality of Recovery score on postoperative day 7, which was statistically analyzed using Student's t-test. Results Thirty-six patients in the CTPVB group and 37 in the control group completed the study. Compared to the control group, the CTPVB group had significantly increased global Chinese 15-item Quality of Recovery scores (133.14 ± 12.97 vs. 122.62 ± 14.89, P = 0.002) on postoperative day 7. Postoperative pain scores and cumulative morphine consumption were significantly lower for up to 8 and 48 hours (P < 0.05; P = 0.002), respectively, in the CTPVB group. Conclusion Perioperative CTPVB markably promotes patient's QoR after open hepatectomy with a profound analgesic effect in the early postoperative period.
Anesthetics, Local/therapeutic use* ; Double-Blind Method ; Hepatectomy/adverse effects* ; Humans ; Morphine/therapeutic use* ; Pain Measurement ; Pain, Postoperative/etiology* ; Ultrasonography, Interventional

Mesenchymal stem cells(MSCs) have functions such as immune regulation and tissue damage repair, but the specific mechanisms of their effects need to be further studied. Paracrine effect is an important mechanism for MSCs to achieve immune regulation, relieve inflammation and repair tissue damage. Tumor necrosis factor α(TNF-α) stimulated protein 6(TSG-6) is one of the paracrine factors of MSCs, which has significant inflammation inhibitory capability and tissue repair ability. It is an important cytokine of MSCs to exert their anti-inflammatory and anti-fibrotic effects. The MSCs can repair tissue damage in kidney, peritonea, skin, liver, lung, cornea, nervous system, and colon by secreting TSG-6. This powerful repair ability could be attributed to the ability of TSG-6 to inhibit the secretion of pro-inflammatory cytokines and pro-fibrogenic factors, such as TNF-α, interleukin(IL)-6, IL-1β and transforming growth factor-β1, thereby reducing the inflammatory response and fibrosis of the body.

Acute 1,2-dichloroethane poisoning causes serious illness, deaths and is a social event of great influence. The compilation of Technical Plan for Emergency Treatment of Acute 1,2-Dichloroethane Poisoning provides scientific guidance for effective treatment of 1,2-dichloroethane poisoning events. The plan describes in detail the specific practice and technical requirements of six links in the process of handling emergency of acute 1,2-dichloroethane poisoning, including accident investigation and treatment, risk assessment, collection and testing of samples, medical treatment, health monitoring and emergency response, et al. The key contents of individual protection requirements, investigation content, etiology determination, medical assistance and health education in the disposal of poisoning incidents were clarified, and the procedures and requirements of health education were added. The technical scheme is scientific, objective and operable, which can provide scientific guidance for the effective treatment of 1,2-dichloroethane poisoning accidents.

Pulmonary fibrosis is an interstitial lung disease caused by different pathogenic factors. It has the characteristics of high morbidity and poor prognosis, which seriously affects the quality of life of patients. However, its pathogenesis has not yet been fully elucidated. Surfactant protein(SP)-A and SP-D are lipoprotein complexes distributed at the air-liquid interface of alveoli, synthesized and secreted by alveolar type Ⅱ epithelial cells and bronchiolar cells. They are important parts of the innate immune system, which participate in the host defense process through a variety of regulatory methods, and play an important role in regulating cell apoptosis and lung inflammation, promoting the process of epithelial repair and maintaining the stability of alveolar structure. The disorder and mutation of SP-A and SP-D may be the influencing factors of the pathogenesis of pulmonary fibrosis. Serum SP-A and SP-D levels are differentially expressed in patients with pulmonary fibrosis and normal healthy individuals, and are related to the severity of pulmonary fibrosis. They are considered to be a class of biomarkers that sensitively reflect lung epithelial cell damage and can be used in the diagnosis, treatment and prognostic evaluation of pulmonary fibrosis.

OBJECTIVE: To explore the mechanism of bone marrow mesenchymal stem cells(BMSCs) in alleviating silica-induced lung injury in mice. METHODS: Ten specific pathogen free healthy male C57 BL/6 mice were selected for isolating BMSCs and bone marrow macrophages(BMDMs). Transwell chamber was used, BMDMs were inoculated onto the upper chamber and BMSCs in the lower chamber. We divided them into sequencing control group and silica(SiO_2) exposure group. All cells were pre-stimulated with 50 μg/L mass concentration lipopolysaccharide for 4 hours. In the SiO_(2 ) group, 250 mg/L mass concentration SiO_2 was added to the upper chamber of transwell and cultured for 16 hours. Total RNA was extracted from the BMSCs collected from the lower chamber. HiSeq/MiSeq high-throughput sequencing technology was used to detect the BMSCs RNA paired-end sequencing. Transcriptome sequencing data was obtained and bioinformatics analysis was performed. Another 12 specific pathogen free healthy male C57 BL/6 mice were randomly divided into control group and experimental group. All mice received one intra-tracheal injection of 20.0 μL(250 g/L mass concentration) of silica dust suspension. After 6 hours, the mice in the control group was given 500.0 μL of 0.9% sodium chloride solution and mice in the experimental group was given 500.0 μL of BMSCs suspension(cell density 1×10~9/L) by tail vein infusion.Mice were sacrificed 12 hours later. The relative mRNA expression of interleukin(IL)-1 Ra, IL-10, tumor necrosis factor stimulating gene 6(TSG-6) and prostaglandin E2(PGE2) in lung tissues of mice were measured by quantitative real-time PCR(q-PCR). Meanwhile, BMDMs and BMSCs transwell co-culture models were established. The cells were divided into 5 groups: BMSCs group, BMSCs+BMDMs group, BMSCs+BMDMs+ lipopolysaccharide(LPS) group, 50 mg/L SiO_2 group, and 100 mg/L SiO_2 group. After 16 hours of corresponding SiO_2 stimulation, BMSCs of each group were collected and the relative mRNA expression levels of IL-1 Ra, IL-10, TSG-6, and PGE2 in the cells were detected by q-PCR. RESULTS: Compared with sequencing control group, BMSCs co-cultured with SiO_2 had 19 genes up-regulated and 21 genes down-regulated, including 10 genes up-regulated for more than 2.0-fold. The relative mRNA expression of IL-1 Ra, IL-10, PGE2 and TSG-6 in the lung tissue of mice increased in the experimental group than that of the control group(all P<0.05). The relative mRNA expression of TSG-6 increased by 37.5 times higher than that of the control group. Compared with the BMSCs+BMDM+LPS group, the level of TSG-6 mRNA relative expression increased in both the 50 mg/L SiO_2 group and the 100 mg/L SiO_2 group(all P<0.05). CONCLUSION: TSG-6 could be the key factor of BMSCs that can attenuate silica-induced lung injury.

OBJECTIVE: To explore the association of serum Apelin level, silicosis stage and lung function in patients with occupational silicosis(hereinafter referred to as silicosis). METHODS: A case-control study was conducted. A total of 85 patients with silicosis were selected as the silicosis group(44, 28 and 13 patients with stage Ⅰ, Ⅱ and Ⅲ silicosis, respectively), and 120 healthy individuals without occupational hazard exposure were selected as the control group. Serum samples were collected from the cases of the two groups and the level of Apelin was determined by enzyme-linked immunosorbent assay. The pulmonary function of the silicosis group was examined. RESULTS: The median and the 25 th and 75 th percentiles \[M(P_(25),P_(75))\] of serum Apelin levels in the control group and silicosis group were 1.29(0.92, 1.77) and 0.80(0.62, 1.04) mg/L, respectively. The level of serum Apelin M(P_(25),P_(75)) in stage Ⅰ, Ⅱ and Ⅲ silicosis patients was 1.03(0.82, 1.31), 0.66(0.60, 0.80) and 0.50(0.30, 0.65) mg/L, respectively. The results of multiple linear regression analysis showed that the level of serum Apelin in the silicosis group was higher than that in the control group after excluding the influence of age and smoking(P<0.01). The level of serum Apelin decreased with the increase of silicosis stage in the silicosis group(P<0.001). Serum Apelin level in silicosis group was positively correlated with lung vital capacity, forced vital capacity, forced expiratory volume in the first second, and forced expiratory flow between 25% and 75%(all P<0.05). CONCLUSION: The lower level of serum Apein in silicosis patients, the more serious the disease and the more serious the damage to lung function. Apelin is of significance in the diagnosis, staging, treatment appraisal and prognostic evaluation of silicosis, and it can be use as a potential therapeutic target for silicosis.

Objective To study the mechanism of bone marrow mesenchymal stem cell (BMSC)-mediated alleviation of pulmonary alveolitis in mice exposed to silica dust. Methods Thirty mice were randomly divided into 3 groups:control group, and two silica groups with or without BMSCs transplantation.Through the tracheal tube clearance, mice in control group received a single injection 20.0 μL of 0.90% sodium chloride solution by one time.Mice from in silica group and silica/BMSCs transplantation group first received a single injection of 20.0 μL silica dust suspension (mass concentration 250 g/L); followed by either 500.0 μL of 0.90% sodium chloride solution or by 500.0 μL of BMSCs suspension (cell density 1×10⁹/L) through tail vein infusion 6 hours later.Mice were euthanized on the 3th day of the experiments.The levels of NALP3 inflammasome in lungs was determined by Western blot.Transwell system was used for co-culture of BMDM (in upper-chamber) and BMSC (in lower-chamber) co-culture.The level of cytokines IL-1β in BMDM cultural supernatant was detected by enzyme linked immunosorbent assay after stimulated by SiO₂ stimulation.The levels of NALP3 inflammasome of in BMDM was determined by Western blot. Results The levels of pro-IL-1β, IL-1β, pro-caspase-1, caspase-1 in lungs of silica/BMSCs transplantation group were lower than that in silica group (P < 0.01).In the experiment in vitro, the concentrations of IL-1β in SiO₂ exposed BMSC/BMDM co-culture group were lower than the SiO₂ exposure only groups (P < 0.05).Meanwhile, the levels of pro-IL-1β, IL-1β, pro-caspase-1, caspase-1 in BMDM was lower than that in silica group (P < 0.01).The level of these proteins didn′t change while when the cell-free supernatant of BMSC culture was directly added. Conclusion The BMSC could inhibit NALP3 inflammasome of macrophages stimulated by SiO₂.