ObjectiveTo investigate the therapeutic effect and mechanism of Huatan Qushi Huoxue prescription on rats with metabolic dysfunction-associated steatohepatitis （MASH）. MethodsA total of 60 specific pathogen-free Sprague-Dawley rats were randomly divided into blank control group， model A group， model B group， Western medicine group （polyene phosphatidylcholine， 143.64 mg/kg）， high-dose Chinese medicine group （Huatan Qushi Huoxue prescription， 20.16 g/kg）， and middle-dose Chinese medicine group （Huatan Qushi Huoxue prescription， 10.08 g/kg）. All rats except those in the blank control group were given high-fat diet. Samples were collected from the model A group at week 8， and since week 12， the other groups were given the corresponding drug once a day for 8 consecutive weeks， with samples collected at week 20. Body weight， liver wet weight， and liver index were measured for all rats； the microplate method was used to measure the serum levels of alanine aminotransferase （ALT）， aspartate aminotransferase （AST）， total cholesterol （TC）， triglycerides （TG）， high-density lipoprotein cholesterol （HDL-C）， low-density lipoprotein cholesterol （LDL-C）， and free fatty acids （FFA）； ELISA was used to measure the serum levels of tumor necrosis factor-α （TNF-α）， interleukin-1β （IL-1β）， interleukin-6 （IL-6）， and soluble triggering receptor expressed on myeloid cells 2 （sTREM2）； HE staining and oil red O staining were performed to observe liver histopathological changes； immunofluorescence assay was used to measure CD68⁺TREM2⁺ cells in liver tissue and calculate the phagocytosis rate of macrophages； quantitative real-time PCR was used to measure the mRNA expression levels of sphingosine 1-phosphate （S1P）， sphingosine 1-phosphate receptor 1 （S1PR1）， a disintegrin and metalloproteinase 17 （ADAM17）， and triggering receptor expressed on myeloid cells 2 （TREM2） in liver tissue， and immunohistochemistry was used to measure the protein expression levels of S1P， S1PR1， ADAM17， and TREM2 in liver tissue. A one-way analysis of variance was used for comparison of normally distributed continuous data with homogeneity of variance between groups， and the least significant difference t-test was used for further comparison between two groups； the Welch’s test was used for comparison of normally distributed continuous data with heterogeneity of variance between groups， and the Tamhane’s test was used for further comparison between two groups. The Kruskal-Wallis H test was used for comparison of non-normally distributed continuous data between groups， and the Dunn’s test was used for further comparison between two groups. ResultsCompared with the blank control group， the model A group and the model B group had significant increases in body weight and liver wet weight， and the model B group had a significant increase in liver index （all P<0.05）. HE staining showed diffuse macrovesicular steatosis of liver tissue in the model A group and a large number of hepatocytes with ballooning degeneration in liver tissue in the model group B， with the presence of mixed inflammatory cell infiltration and mild perisinusoidal fibrosis in the lobules and the portal area. Compared with the blank control group， the model A group and the model B group had significant increases in NAS score and oil red O-positive area （all P<0.05）， and the model B group had significant increases in these two indicators than the model A group （both P<0.05）. Compared with the blank control group， the model A group and the model B group had significant increases in the serum levels of TC， TG， LDL-C， FFA， IL-1β， IL-6， and sTREM2 and a significant reduction in the serum level of HDL-C， and the model B group had significant increases in the serum levels of ALT， AST， and TNF-α （all P<0.05）； compared with the model A group， the model B group had significant increases in the serum levels of ALT， AST， TC， TG， FFA， TNF-α， IL-1β， IL-6， and sTREM2 and a significant reduction in the serum level of HDL-C （all P<0.05）. Immunofluorescence assay showed that compared with the blank control group， the model A group had a significant increase in the phagocytosis rate of macrophages （P<0.05）， while the model B group had a significantly lower phagocytosis rate of macrophages than the model A group （P<0.05）. Quantitative real-time PCR showed that compared with the blank control group， the model A group and the model B group had a significant increase in the mRNA expression level of TREM2， and the model B group had significant increases in the mRNA expression levels of S1P and S1PR1 （both P<0.05）； moreover， compared with the model A group， the model B group had significant increases in the mRNA expression levels of S1PR1 and TREM2 （both P<0.05）. Immunohistochemistry showed that compared with the blank control group， the model A group and the model B group had significant increases in the protein expression levels of S1P， S1PR1， and ADAM17， and the model A group had a significant increase in the protein expression level of TREM2 （all P<0.05）； compared with the model A group， the model B group had significant increases in the protein expression levels of S1P， S1PR1， and ADAM17 and a significant reduction in the protein expression level of TREM2 （all P<0.05）. Compared with the model B group， each medication group had significant reductions in body weight， liver wet weight， and liver index （all P<0.05）； each medication group had significant improvements in hepatic steatosis and inflammatory damage， with significant reductions in NAS score and oil red O-positive area （all P<0.05）； each medication group had significant reductions in the serum levels of ALT， AST， TC， TG， FFA， IL-1β， and IL-6 （all P<0.05） and a significant increase in the serum level of HDL-C （P<0.05）， and the high-dose Chinese medicine group had a significant reduction in the serum level of TNF-α （P<0.05）； each medication group had a significant increase in the phagocytosis rate of macrophages （all P<0.05）； the high- and middle-dose Chinese medicine groups had a significant reduction in the protein expression level of ADAM17， and the high-dose Chinese medicine group had a significant increase in the protein expression level of TREM2 （all P<0.05）. ConclusionHuatan Qushi Huoxue prescription improves lipid metabolism and inflammation in the liver of MASH rats by regulating hepatic macrophage phagocytosis.

Liver fibrosis is the core pathological stage of the progression of various chronic liver diseases to liver cirrhosis， and hepatic stellate cell （HSC） activation and the abnormal accumulation of collagen fibers are important processes for the development and progression of liver fibrosis. In recent years， studies have shown that HSC activation is regulated by the complex interactions between various organelles （including mitochondria， endoplasmic reticulum， Golgi apparatus， lysosome， and peroxisomes）， and such interactions affect the key cellular processes such as energy metabolism， protein synthesis and folding， reactive oxygen species balance， and autophagy， thereby participating in the progression of liver fibrosis. Meanwhile， traditional Chinese medicine and its active ingredients with multi-target synergistic effects have attracted wide attention. From the perspective of the interaction between organelles， this article systematically elaborates on the specific mechanism of such interactions in the progression of liver fibrosis and reviews how traditional Chinese medicine inhibits HSC activation and collagen production by regulating the function of these organelle and their interaction networks， thereby exerting an anti-liver fibrosis effect， in order to provide a theoretical basis for in-depth understanding of the pathological mechanism of liver fibrosis and the development of new traditional Chinese medicine intervention strategies.

Objective:To describe the safety of using the Chinese-made robotic laparoscopic surgery system for laparoscopic sacrocolpopexy in the treatment of severe pelvic organ prolapse.Methods:A pilot descriptive clinical study was conducted, enrolling 16 severe pelvic organ prolapse patients at Peking University First Hospital from April 2023 to January 2024. Patients who consented to participate in this study underwent laparoscopic sacrocolpopexy for severe pelvic organ prolapse using Chinese-made robotic laparoscopic surgery system. Preoperative clinical basic data and perioperative data of the patients were collected, summarizing the data on perioperative bleeding and complications, and reviewed the surgical learning experience. The evaluation indicators related to the learning experience included: (1) efficiency evaluation: including equipment docking time, total surgery time, suturing time, mechanical arm operation time and hysterectomy time, which were timed and recorded during surgery; (2) equipment operability evaluation: including equipment operation task load assessment and intraoperative operation feeling score. The cumulative sum analysis method was used to quantify surgery time and fit the learning curve.Results:Sixteen patients were successfully enrolled and underwent surgery, including total hysterectomy with bilateral salpingo-oophorectomy or salpingectomy plus sacrocolpopexy, or sacrocolpopexy alone (for one case without uterus). The age of 16 cases was (56.7±7.6) years (ranged from 44 to 67 years), with body mass index of (25.4±2.5) kg/m2. Concurrent procedures included anterior vaginal wall repair in 12 cases (12/16), posterior vaginal wall repair in 13 cases (13/16), tension-free vaginal tape obturator system in 1 case (1/16), and recto-uterine pouch hernia repair in 4 cases (4/16). The total surgery time was (355.8±91.1) minutes, with docking time at (6.7±4.9) minutes, robotic operative time at (267.6±81.4) minutes, robotic suturing time at (155.6±53.9) minutes, and hysterectomy time at (112.0±45.3) minutes. Learning curve analysis revealed inflection points at 6 cases for total surgery time ( P<0.001, R2=0.944) and robotic operative time ( P<0.001, R2=0.982), 5 cases for docking time ( P<0.001, R2=0.989), and 6 cases for robotic suturing time ( P<0.001, R2=0.907). Hysterectomy time had an inflection point at 5 cases ( P=0.023, R2=0.700). Median blood loss was 30 ml (range: 10-1 000 ml), with severe bleeding in one patient (1/16). No conversions to open surgery or laparoscopy occurred, and no severe perioperative or postoperative complications were reported. Conclusion:The Chinese-made robotic laparoscopic surgery system demonstrates excellent short-time safety and ease of operation for laparoscopic sacrocolpopexy.

Objective:To explore differences in the radiation-induced intestinal injury in mice exposed to ultra-high dose rate (FLASH) and conventional-dose-rate (CONV) pulsed X-ray irradiation in order to provide evidence for the application of ultra-high dose rate pulsed X-rays in gastrointestinal radiotherapy.Methods:Using the random number table method, 32 C57BL/6J mice were randomly divided into four groups: a sham irradiation group (SHAM), two conventional dose rate groups (CONV0.067 and CONV0.1), and an ultra-high dose rate group (F215), with each group containing eight mice. All groups, except SHAM, received a single 12 Gy abdominal X-ray irradiation at dose rates of 0.067, 0.1, and 215 Gy/s, respectively. At 3 d post-irradiation, histopathological (hematoxylin-eosin staining, HE staining), immunohistochemical, and Western blot analysis were performed to assess the histopathological markers and oxidative stress indicators of intestinal tissues, as well as relevant proteins involved in signaling pathways.Results:At 3 d post-irradiation, mice in all irradiation groups suffered from varying degrees of intestinal tissue degeneration and necrosis, epithelial cell shedding, villus shortening, and crypt loss ( t = 5.75, 8.79, 5.71, P < 0.05). Regarding oxidative stress, at 3 d post-irradiation, mice in the CONV0.067 and CONV0.1 groups showed significantly lower levels of superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GSH-PX), glutathione (GSH), and total antioxidant capacity (T-AOC) compared to those in the F215 group ( t = 7.06-10.64, P < 0.01). In contrast, their malondialdehyde (MDA) levels were significantly elevated ( t = 11.06, 8.31, P < 0.01), with no statistical significance observed between them and mice in the F215 group ( P > 0.05). Immunohistochemical and Western blot analyses indicated that at 3 d post-irradiation, mice in the three irradiation groups exhibited an upward trend in the Nrf2 and HO-1 protein levels and a downward trend in the Keap1 protein level compared to those in the SHAM group. Notably, statistical significance was observed between the F215 group and the two conventional dose rate groups ( t = 4.89-20.95, P < 0.05). These result were consistent with the prior changes in antioxidant markers. Conclusions:Ultra-high-dose-rate X-ray irradiation reduces acute RIII by alleviating oxidative stress and modulating the expression of the Keap1-Nrf2-HO-1 signaling pathway.

Objective To evaluate the methodological quality and measurement attribute quality of the evaluation tool for pediatric palliative care quality assessment tools,and to provide references for medical staff to select the best assessment tools.Methods The PubMed,Embase,Cochrane Library,Web of Science,CINAHL,Scopus,China National Knowledge Infrastructure(CNKI),Wanfang Database,VIP Database,Chinese Biomedical Literature Database,GIN,NGC,NICE,NRAO,medlive,WHO,AAHPM,WHPCA,APHN were searched from inception to March 28,2024.Data were screened and extracted independently by 2 researchers.The consensus-based standards for the selection of health measurement instruments(COSMIN)checklist and quality criteria were employed to evaluate the methodological quality and psychometric properties of the included pediatric palliative care quality assessment tools.Finally,recommendations were formulated based on these evaluations.Results A total of 13 articles were included,involving 9 pediatric palliative care quality assessment tools.Among them,the PICU-QODD,PaPEQu and QCPCI demonstrated good content validity and internal consistency,and are recommended as Grade A.The remaining assessment tools are recommended as Grade B or C.Conclusion The PICU-QODD,PaPEQu and QCPCI are recommended for use,but further validation of their psychometric properties is still needed.

Siwu Decoction is a classic formula for tonifying the blood and activating blood circulation and is characterized by its ability to tonify the blood without leaving stasis and promote blood circulation without harming the vital energy of the body.It is widely used in clinical practice for the treatment of various conditions related to blood deficiency and poor blood circulation,such as anemia,menstrual disorders,and dysmenorrhea.The liver is responsible for governing the free flow of Qi and storing blood,and abnormalities in liver function are associated with various acute and chronic liver injuries.Siwu Decoction can restore liver homeostasis by tonifying the blood,activating blood circulation,nourishing the blood,and soothing the liver.Based on its unique prescription formulation and multiple pharmacological mechanisms,Siwu Decoction has become an important prescription for enhancing liver microcirculation,facilitating hepatocyte repair and regeneration,and alleviating liver injury.This article reviews the effect and mechanism of Siwu Decoction in the prevention and treatment of various liver injuries(including alcoholic liver disease,nonalcoholic fatty liver disease,nonalcoholic fatty liver disease,liver fibrosis,and liver cirrhosis)and discusses existing problems and future research directions.

Objective:To evaluate the effectiveness of anti-G straining maneuver (AGSM) in pilots by surface electromyography (sEMG), and to explore the relationships between characteristics of sEMG and anti-G endurance in pilots.Methods:Thirty-eight male high-performance fighter pilots who completed the human centrifuge test at the Air Force Medical Center were selected. Among them, 25 completed the 8.0 G for 10 s anti-G endurance test and 13 completed the 9.0 G for 10 s anti-G endurance test. The sEMG tester was used to keep track of the changes of sEMG in rectus abdominis, rectus femoris, anterior tibial and gastrocnemius muscles while pilots were engaged in AGSM. The anti-G endurance was evaluated according to the changes of visual fields and consciousness. The pilots were divided into 3 groups: the good vision and consciousness group, peripheral visual field narrowing group and endurance endpoint group. The differences in the integral electromyogram (iEMG), mean power frequency (MPF) and muscle input rates between the 3 groups were investigated.Results:A total of 25 pilots completed the 8.0 G for 10 s anti-G endurance test. Among them, 8 (32.0%) were in the good vision and consciousness group, 13 (52.0%) in the peripheral visual field narrowing group and 4 (16.0%) reached the endurance endpoint. Among the 13 pilots who completed the 9.0 G for 10 s anti-G endurance test, 3 (23.1%) were in the good vision and consciousness group, 6 (46.1%) in the peripheral visual field narrowing group, and 4 (30.8%) in the endurance endpoint group. The results of sEMG showed that the iEMG values of the anterior tibialis muscle in pilots under the 9.0 G for 10 s load were significantly different across endurance groups ( H=7.54, P=0.023), and that the iEMG values of the tibialis anterior muscle in the good vision and consciousness group were higher than those in the endurance endpoint group ( P=0.036). The negative slopes of MPF for the rectus abdominis, rectus femoris, anterior tibialis, and gastrocnemius muscles were higher in the good vision and consciousness group than in the other 2 groups, but the differences were not statistically significant ( P>0.05). During the 8.0 G for 10 s anti-G endurance test, there were significant differences in lower limb muscle contribution rates between the 3 groups ( F=4.19, P=0.029). The endurance endpoint group exhibited a lower contribution rate than the good vision and consciousness group ( P=0.025). During the 9.0 G for 10 s anti-G endurance test, there were significant differences in tibialis anterior muscle contribution rates between the 3 groups ( F=4.16, P=0.049). The endurance endpoint group demonstrated a lower contribution rate than the good vision and consciousness group ( P=0.049). Conclusions:The full and balanced activation of abdominal muscles and lower limb muscles, especially the effective mobilization of calf muscles, plays a pivotal role in improving pilots′ AGSM efficiency in high G environments.

Objective:To find out whether the performance of a China-made high performance human centrifuge can satisfy the need of high G training by conducting physiological experiments.Methods:The dynamic physical performance of the anti-G equipment with the human centrifuge was tested before 5 subjects underwent the gradual-onset rate (GOR) run and rapid onset rate (ROR) run experiments. The G onset rate of GOR was 0.1 G/s. The relaxed G-tolerance under GOR (GOR tolerance 1) and the anti-G straining maneuver aided G-tolerance under GOR (GOR tolerance 2) were tested respectively. The G onset rate of ROR was 3 G/s, and the closed-loop mode and pre-programed mode were employed respectively. The closed-loop mode involved 5 G 10 s and 8 G 10 s, where the subjects were required to manipulate the joystick to ensure that the real-time curve of the load matched the target curve. In the pre-programmed mode, the subjects were exposed to 8 G 10 s passively, without any operation requirements. A subjective evaluation form was filled out by subjects after the experiments, in which the 14 indexes for evaluation were about the gondola facilities and environment, running processes, medical monitoring and overall assessment.Results:Both the oxygen mask and anti-G suit achieved full pressurization within 2.0 s. The GOR tolerance 1 was [4.0(3.8, 4.6)] G while the GOR tolerance 2 was (6.2±0.5) G, suggesting a statistically significant difference ( Z=-2.63, P=0.008). The HP anti-G straining maneuver effect was (2.0±0.6) G. All the 5 subjects finished the 5 G 10 s experiment in a closed-loop mode. Three of them attempted 8 G 10 s in the closed-loop mode (1 subject achieved only 7.6 G peak acceleration, and the other 2 achieved full 8 G 10 s exposure), while the remaining 2 completed the 8 G 10 s in the pre-programmed mode. In the closed-loop mode, it was found that the stick force was too strong, the guiding G and real time G curve were not easy to distinguish for some of the subjects because the curve colors were similar, and that the subjects could not see the G curves clearly in case of a grayout. Both seat comfort and the voice quality of communication got the highest subjective assessment score [5.0(4.0, 5.0)] while the sensation of tumble got the lowest score (2.8±0.8). The median or mean scores of other subjective evaluation indexes ranged from 3.0 to 4.6 points. The overall score of subjective assessment was [4.0(3.5, 4.0)] points. Conclusions:The China-made high performance human centrifuge can meet the requirements of 8.0 G high G training, which can be made more effective and comfortable if the strong stick force and feeling of tumble during stop running are overcome.

Objective:To investigate the feasibility and clinical outcomes of using the deep inferior epigastric perforator flap to repair stage Ⅳ pressure ulcers in elderly patients with the femoral trochanter.Methods:Retrospective analysis of clinical data of elderly patients with stage Ⅳ pressure ulcers of the femoral trochanter treated at the Medical Center of Burn Plastic and Wound Repair, the First Affiliated Hospital of Nanchang University from May 2018 to May 2023 using the deep inferior epigastric perforator flap.The deep inferior epigastric perforator flap was designed on the same side of the abdomen based on the preoperative detection of the paraumbilical perforating branch.The axis of the inferior epigastric artery was determined by the line connecting the femoral artery pulsation point at the inguinal ligament and the obvious paraumbilical perforating branch point. The axis of the skin flap was determined by the line connecting the obvious paraumbilical perforating branch point and the subscapular angle. Combined with the situation of the sinus after pressure ulcer debridement and the range of skin and soft tissue defects, the inferior epigastric artery perforating branch skin flap was cut and repaired. The pedicle of the inferior epigastric artery was freed to the required length according to the location of the pressure ulcer, and the wound was transferred and repaired through a subcutaneous tunnel. The donor area was directly pulled and sutured. The survival of the skin flap and the healing of the donor site wound after surgery were observed, and the recurrence of pressure ulcers, the appearance and texture of the skin flap, and the recovery of the donor site were followed up regularly.Results:A total of 11 patients were included, including 7 males and 4 females; age ranged from 66 to 83 years old, with an average of 72.1 years old. There were total of 11 pressure ulcers in the femoral trochanter, with an area of 5.0 cm × 3.0 cm-13.0 cm ×6.0 cm before debridement and an area of 8.0 cm × 5.0 cm-16.0 cm × 8.0 cm after debridement. The deep inferior epigastric perforator flap was used to repair the wound. The flap was cut with an area of 10.0 cm × 6.0 cm-18.0 cm × 9.0 cm, and the length of the blood vessels in the flap pedicle was 12-16 cm, with an average of 14 cm. After surgery, 9 of the 11 flaps survived completely. One skin flap developed purplish discoloration at the distal end 24 hours after surgery, which was relieved by removing the suture at the site with high tension at the wound edge. One skin flap also showed slight necrosis at the distal end. The flap was removed under local anesthesia at the bedside of the ward, and the surgical wound was directly sutured. After dressing change, it healed. The wounds in the donor area all healed well. Follow up for 3-15 months postoperatively, with an average of 11 months, showed no recurrence of pressure ulcers in all patients. The skin flap had a soft texture, and its color and appearance were similar to those of the surrounding skin. No abdominal wall hernia was observed in the inferior epigastric donor area.Conclusion:The deep inferior epigastric perforator flap has a long vascular pedicle, reliable blood supply, sufficient tissue volume for cutting, no recurrence of pressure ulcers after surgery, good appearance and texture of the affected area, and no secondary abdominal wall hernia in the donor site. It is an effective method for repairing stage Ⅳ pressure ulcers of the femoral trochanter in elderly patients.

Objectives:To preliminarily investigate the safety and efficacy of same-day discharge(SDD)following radiofrequency catheter ablation for arrhythmia.Methods:A total of 50 consecutive patients who underwent radiofrequency catheter ablation for arrhythmia in the SDD strategy at Fuwai Hospital from 8 July 2024 to 18 September 2024 were included in this analysis.The study evaluated the immediate success rate of the ablation,the rate of all-cause and arrhythmia-related readmission,outpatient or emergency visits and incidence of complications within 30 days post ablation,and recurrence rate of arrhythmias over a 3-month follow-up period.Results:The average age of the 50 patients was(47.2±16.1)years old,32 patients(64.0%)were male.Radiofrequency catheter ablation was performed in 47 patients(94.0%),including 18(36.0%)atrial fibrillation(AF)ablation.Three patients(6.0%)underwent electrophysiological study only.The immediate success rate for ablation patients was 100%(47/47).None of the patients developed vascular puncture-related or ablation-related complications.The average hospital stay and postoperative observation time were(6.84±1.13)hours and(3.40±1.12)hours,respectively.The all-cause and arrhythmia-related readmission,outpatient or emergency visits rates within 30 days were 12.0%(6/50)and 2.0%(1/50),respectively.Two patients(4.0%)post ablation experienced AF recurrence during the 3-months follow-up period.Conclusions:Radiofrequency catheter ablation for arrhythmias in SDD strategy is safe,effective,and feasible.