Objective To evaluate the safety and efficacy of a self-developed micro-normothermic machine perfusion (NMP) system (micro-perfusion device) for preserving isolated porcine limbs. Methods Five healthy Landrace pigs were selected, and their left and right forelimbs were randomly divided into the NMP group and static cold storage (SCS) group. The NMP group was perfused with the self-developed micro-perfusion device and polymerized hemoglobin perfusate for 32 hours at normothermia, while the SCS group was preserved at 4 ℃. Hemodynamic parameters such as perfusion pressure and flow were monitored. The pH value, partial pressure of oxygen (PO₂), lactic acid (Lac), creatine kinase (CK) and lactate dehydrogenase (LDH) in the perfusate were measured. Hematoxylin-eosin staining was used to assess the muscle tissue structure, terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling was employed to evaluate muscle cell apoptosis, and immunohistochemistry staining was applied to detect the expressions of tumor necrosis factor (TNF)-α and interleukin (IL)-6. A mixed-effects model was used to analyze the effects of time and treatment methods on tissue structure, cell apoptosis and inflammatory factors. Results The device could stably maintain a perfusion pressure of (69±15) mmHg and a flow rate of (117±42) mL/min. The pH value and electrolytes of the perfusate were generally stable, with PO₂ maintained at a high level. Lac was maintained at 5.38(3.81, 6.45) mmol/L, while CK and LDH increased over time. After 32 hours of perfusion in the NMP group, both the myocyte spacing and apoptosis rate were better than those in the SCS group. Mixed-effects model analysis showed that there were statistically significant differences in the effects of NMP treatment and SCS treatment on myocyte spacing and apoptosis rate per unit time (both P < 0.05). There were no statistically significant differences in TNF-α and IL-6 between the two groups, and mixed-effects model analysis showed no statistically significant differences in the effects of NMP treatment and SCS treatment on TNF-α and IL-6 per unit time (both P > 0.05). Conclusions The micro-perfusion device used in this study may achieve 32-hour normothermic preservation in a porcine limb amputation model, maintain basic metabolism and ionic homeostasis, reduce muscle structural damage and cell apoptosis without inducing additional inflammatory responses. This technology is expected to significantly extend the time window for replantation of amputated limbs in disaster rescue and long-distance transportation, providing an important technical basis for clinical translation and subsequent replantation research.

Objective:To investigate the role of keloid fibroblast-derived exosomes (KF-Exos) in inducing the phenotypic transformation of normal fibroblasts (NFs) into myofibroblasts and to assess their significance in keloid formation.Methods:Normal skin tissues and keloid tissues were collected from female patients aged 20-49 years who underwent surgery at the Department of Plastic Surgery, the Second Hospital of Harbin Medical University from October 2022 to March 2023. Normal fibroblasts and keloid fibroblasts (KFs) were extracted, and the supernatant of KFs was collected to isolate their exosomes. The exosomes were characterized using nanoparticle size analysis (NTA) and transmission electron microscopy (TEM). The samples were divided into the control, KEFS, and KF-Exos groups, then cell proliferation and migration abilities of groups were assessed by scratch assay and Edu assay. The samples were divided into the control, KEFS, KF-Exos, and KFs groups, real-time fluorescence quantitative PCR was used to measure the gene expression levels of Col1a1, Col1a2, Col3a1, α-SMA, TGF-β1, TGF-β2, and TGF-β3. The samples were divided into the control, and KF-Exos groups, Western blot analysis was conducted to evaluate the protein expression levels of Col-1, α-SMA, TGF-β1, Smad2/3, and Smad4. Statistical analysis and plotting were conducted using GraphPad Prism 9.0 software and Image J. Comparisons among multiple groups were analyzed using one-way ANOVA, then comparison of subgroups with the control group was performed using the Dunnett- t test. Independent samples t-test was used to compare the control group with the KF-Exos group in Western blot. P<0.05 was considered statistically significant. Results:The extracted KF-Exos was identified by TEM as a bilayer lipid membrane vesicles. NTA revealed that the average diameter of KF-Exos was 105.4 nm. Scratch and Edu assays demonstrated statistically significant differences in proliferation and migration abilities among the control, KEFS, and KF-Exos groups (all P<0.05). Compared to the control group, the KF-Exos group exhibited statistically significant differences in both proliferation and migration abilities (both P<0.05), while the KEFS group did not show statistically significant differences in these abilities (both P>0.05). Quantitative PCR results showed that, among the control, KEFS, KF-Exos, and KFs groups, there were significant differences in the mRNA expression levels of Col1a1, Col1a2, Col3a1, α-SMA, TGF-β1, TGF-β2, and TGF-β3 (all P<0.05). Compared with the control group, the Col3a1 mRNA level in the KEFS group was significantly different ( P<0.05), whereas the differences in Col1a1, Col1a2, and α-SMA levels were not statistically significant (all P>0.05). The expression levels of Col1a1, Col1a2, Col3a1, α-SMA, TGF-β1, TGF-β2, and TGF-β3 mRNA of the KFs group, and the expression levels of Col1a1, Col1a2, Col3a1, α-SMA, TGF-β1, and TGF-β3 mRNA of the KFs-Exos group had significant differences compared with the control group (all P<0.05), while the difference of TGF-β2 between the KF-Exos group and the control group was not statistically significant ( P>0.05). Western blotting results showed that the protein expression levels of TGF-β1, Smad2/3 and Smad4 were significantly up-regulated in the KF-Exos group compared to the control group (all P<0.05). Conclusion:KF-Exos successfully induced the differentiation of NFs into myofibroblasts and enhanced the expression of extracellular matrix-related factors. This phenomenon may be mediated by the upregulation of the TGF-β1-Smad2/3 and Smad4 signaling pathways.

Objective:To explore the safety and efficacy of shunt reduction using the Interlock-35 fibered interlocking detachable coil (IDC) occlusion system in the treatment of refractory hepatic encephalopathy (HE) after transjugular intrahepatic portosystemic shunt (TIPS).Methods:From August 2022 to December 2023, at the Department of Gastroenterology of the Air Force Medical Center, the clinical data of patients with refractory HE after TIPS who were treated with shunt reduction using the Interlock-35 fibered IDC occlusion system were retrospectively collected, which included portal vein pressure gradient (PVPG), HE grades, blood ammonia levels, prothrombin time (PT), liver function parameters, and other related indicators. The primary indicators related to the efficacy of the shunt reduction included symptom improvement, and changes in PVPG, blood ammonia levels, and Child-Pugh score. The safety of shunt reduction was analyzed based on the incidence of complications such as gastrointestinal bleeding and ascites during the follow-up period. Paired t-test was used for statistical analysis. Results:A total of 21 patients were enrolled. Prior to shunt reduction, there were 5 cases with HE of grade 3 and 16 cases with HE of grade 2. Before operation, the blood ammonia was (103.14±27.69) mol/L; and the liver function Child-Pugh grade of 1 case was classified as grade A, 16 cases as grade B, and 4 cases as grade C. Shunt reduction was performed between 7 and 1 879 d, with a median time of 99 (54, 806) d after TIPS. The procedure was technically successful in all patients, with a total of 25 coils implanted. Before shunt reduction, the PVPG was (14.02±5.28) cmH 2O (1 cmH 2O=0.098 kPa), after shunt reduction procedure, the PVPG increased to (25.05±6.04) cmH 2O, and the difference was statistically significant ( t=-11.26, P<0.001). After operation, 16 patients returned to the hospital for follow-up examinations, with a median follow-up time of 114 (46, 195) d, the blood ammonia levels, PT, and Child-Pugh scores during the follow-up were all lower than those before operation ((78.19±27.85) μmol/L vs. (105.00±30.53) μmol/L, (14.09±1.65) s vs. (15.41±2.35) s, and 6.88±1.59 vs. 8.13±1.75, respectively), and the differences were statistically significant ( t=2.23, 3.23, and 2.61; P=0.040, <0.001, =0.020). There was no statistically significant in PVPG between during follow-up and immediately post-procedure ((28.91±6.20) cmH 2O vs. (25.22±5.92) cmH 2O, P>0.05). During the follow-up period, HE symptoms disappeared in 12 patients among the 16 patients who returned to hospital for follow-up, however gastrointestinal bleeding occurred in 5 patients and ascites occurred in 3 patients; additionally, 4 patients experienced intermittent HE symptoms (grade 1 in 3 cases, grade 2 in 1 case). After operation, 5 patients were followed up via telephone, among them, 3 patients died, and 2 patients experienced intermittent HE (grade 1) which could be spontaneously restored with dietary adjustments and(or) medication. Conclusions:Interlock-35 fibered IDC occlusion system for shunt reduction is a feasible and effective treatment for refractory HE after TIPS. It can effectively improve symptoms and decrease liver function score. After shunt reduction, early follow-up and adjustment of flow reduction can help reduce the occurrence of severe complications.

Objective:To investigate the role of keloid fibroblast-derived exosomes (KF-Exos) in inducing the phenotypic transformation of normal fibroblasts (NFs) into myofibroblasts and to assess their significance in keloid formation.Methods:Normal skin tissues and keloid tissues were collected from female patients aged 20-49 years who underwent surgery at the Department of Plastic Surgery, the Second Hospital of Harbin Medical University from October 2022 to March 2023. Normal fibroblasts and keloid fibroblasts (KFs) were extracted, and the supernatant of KFs was collected to isolate their exosomes. The exosomes were characterized using nanoparticle size analysis (NTA) and transmission electron microscopy (TEM). The samples were divided into the control, KEFS, and KF-Exos groups, then cell proliferation and migration abilities of groups were assessed by scratch assay and Edu assay. The samples were divided into the control, KEFS, KF-Exos, and KFs groups, real-time fluorescence quantitative PCR was used to measure the gene expression levels of Col1a1, Col1a2, Col3a1, α-SMA, TGF-β1, TGF-β2, and TGF-β3. The samples were divided into the control, and KF-Exos groups, Western blot analysis was conducted to evaluate the protein expression levels of Col-1, α-SMA, TGF-β1, Smad2/3, and Smad4. Statistical analysis and plotting were conducted using GraphPad Prism 9.0 software and Image J. Comparisons among multiple groups were analyzed using one-way ANOVA, then comparison of subgroups with the control group was performed using the Dunnett- t test. Independent samples t-test was used to compare the control group with the KF-Exos group in Western blot. P<0.05 was considered statistically significant. Results:The extracted KF-Exos was identified by TEM as a bilayer lipid membrane vesicles. NTA revealed that the average diameter of KF-Exos was 105.4 nm. Scratch and Edu assays demonstrated statistically significant differences in proliferation and migration abilities among the control, KEFS, and KF-Exos groups (all P<0.05). Compared to the control group, the KF-Exos group exhibited statistically significant differences in both proliferation and migration abilities (both P<0.05), while the KEFS group did not show statistically significant differences in these abilities (both P>0.05). Quantitative PCR results showed that, among the control, KEFS, KF-Exos, and KFs groups, there were significant differences in the mRNA expression levels of Col1a1, Col1a2, Col3a1, α-SMA, TGF-β1, TGF-β2, and TGF-β3 (all P<0.05). Compared with the control group, the Col3a1 mRNA level in the KEFS group was significantly different ( P<0.05), whereas the differences in Col1a1, Col1a2, and α-SMA levels were not statistically significant (all P>0.05). The expression levels of Col1a1, Col1a2, Col3a1, α-SMA, TGF-β1, TGF-β2, and TGF-β3 mRNA of the KFs group, and the expression levels of Col1a1, Col1a2, Col3a1, α-SMA, TGF-β1, and TGF-β3 mRNA of the KFs-Exos group had significant differences compared with the control group (all P<0.05), while the difference of TGF-β2 between the KF-Exos group and the control group was not statistically significant ( P>0.05). Western blotting results showed that the protein expression levels of TGF-β1, Smad2/3 and Smad4 were significantly up-regulated in the KF-Exos group compared to the control group (all P<0.05). Conclusion:KF-Exos successfully induced the differentiation of NFs into myofibroblasts and enhanced the expression of extracellular matrix-related factors. This phenomenon may be mediated by the upregulation of the TGF-β1-Smad2/3 and Smad4 signaling pathways.

Objective:To explore the safety and efficacy of shunt reduction using the Interlock-35 fibered interlocking detachable coil (IDC) occlusion system in the treatment of refractory hepatic encephalopathy (HE) after transjugular intrahepatic portosystemic shunt (TIPS).Methods:From August 2022 to December 2023, at the Department of Gastroenterology of the Air Force Medical Center, the clinical data of patients with refractory HE after TIPS who were treated with shunt reduction using the Interlock-35 fibered IDC occlusion system were retrospectively collected, which included portal vein pressure gradient (PVPG), HE grades, blood ammonia levels, prothrombin time (PT), liver function parameters, and other related indicators. The primary indicators related to the efficacy of the shunt reduction included symptom improvement, and changes in PVPG, blood ammonia levels, and Child-Pugh score. The safety of shunt reduction was analyzed based on the incidence of complications such as gastrointestinal bleeding and ascites during the follow-up period. Paired t-test was used for statistical analysis. Results:A total of 21 patients were enrolled. Prior to shunt reduction, there were 5 cases with HE of grade 3 and 16 cases with HE of grade 2. Before operation, the blood ammonia was (103.14±27.69) mol/L; and the liver function Child-Pugh grade of 1 case was classified as grade A, 16 cases as grade B, and 4 cases as grade C. Shunt reduction was performed between 7 and 1 879 d, with a median time of 99 (54, 806) d after TIPS. The procedure was technically successful in all patients, with a total of 25 coils implanted. Before shunt reduction, the PVPG was (14.02±5.28) cmH 2O (1 cmH 2O=0.098 kPa), after shunt reduction procedure, the PVPG increased to (25.05±6.04) cmH 2O, and the difference was statistically significant ( t=-11.26, P<0.001). After operation, 16 patients returned to the hospital for follow-up examinations, with a median follow-up time of 114 (46, 195) d, the blood ammonia levels, PT, and Child-Pugh scores during the follow-up were all lower than those before operation ((78.19±27.85) μmol/L vs. (105.00±30.53) μmol/L, (14.09±1.65) s vs. (15.41±2.35) s, and 6.88±1.59 vs. 8.13±1.75, respectively), and the differences were statistically significant ( t=2.23, 3.23, and 2.61; P=0.040, <0.001, =0.020). There was no statistically significant in PVPG between during follow-up and immediately post-procedure ((28.91±6.20) cmH 2O vs. (25.22±5.92) cmH 2O, P>0.05). During the follow-up period, HE symptoms disappeared in 12 patients among the 16 patients who returned to hospital for follow-up, however gastrointestinal bleeding occurred in 5 patients and ascites occurred in 3 patients; additionally, 4 patients experienced intermittent HE symptoms (grade 1 in 3 cases, grade 2 in 1 case). After operation, 5 patients were followed up via telephone, among them, 3 patients died, and 2 patients experienced intermittent HE (grade 1) which could be spontaneously restored with dietary adjustments and(or) medication. Conclusions:Interlock-35 fibered IDC occlusion system for shunt reduction is a feasible and effective treatment for refractory HE after TIPS. It can effectively improve symptoms and decrease liver function score. After shunt reduction, early follow-up and adjustment of flow reduction can help reduce the occurrence of severe complications.

Objective:To investigate the safety of minimally invasive liver resection for resectable hepatocellular carcinoma (HCC) complicated with portal hypertension.Methods:The propensity score matching and retrospective cohort study was conducted. The clinicopathological data of 807 patients with resectable HCC who underwent minimally invasive liver resection in 8 medical centers, including Sir Run Run Shaw Hospital, Affiliated with the Zhejiang University School of Medicine et al, from June 2011 to November 2022 were collected. There were 670 males and 137 females, aged 58(50,66)years. Of the 807 patients, 173 cases with portal hypertension were divided into the portal hypertension group, and 634 cases without portal hypertension were divided into the non-portal hypertension group. Observation indicators: (1) propensity score matching and comparison of general data of patients between the two groups after matching; (2) intraoperative and post-operative situations; (3) subgroup analysis. Propensity score matching was done by the 1:1 nearest neighbor matching method, with the caliper setting as 0.001. Measurement data with skewed distribution were represented as M( Q1, Q3), and comparison between groups was conducted using the rank sum test. Count data were described as absolute numbers, and comparison between groups was conducted using the chi-square test or Fisher exact probability. Comparison of ordinal data was constructed using the non-parameter rank sun test. Results:(1) Propensity score matching and comparison of general data of patients between the two groups after matching. Of the 807 patients, 268 cases were successfully matched, including 134 cases in the portal hypertension group and 134 cases in the non-portal hypertension group. The elimination of the tumor diameter and robot-assisted surgery confounding bias ensured comparability between the two groups after propensity score matching. (2) Intraoperative and postoperative situations. The occlusion time of porta hepatis, cases with intraoperative blood transfusion, cases with postoperative complication, cases with complication >Ⅱ grade of Clavien-Dindo classification, cases of Clavien-Dindo classification as Ⅰ grade, Ⅱ grade, Ⅲ grade, Ⅳ grade, cases with liver related complication were 27.0(15.0,43.0)minutes, 33, 55, 15, 13, 29, 14, 1, 37 in the portal hypertension group, versus 35.0(22.0,60.0)minutes, 17, 25, 5, 14, 9, 4, 1, 13 in the non-portal hypertension group, showing significant differences in the above indicators between the two groups ( Z=-2.15, χ2=6.30, 16.39, 4.38, 20.72, 14.16, P<0.05). (3) Subgroup analysis. Results of subgroups analysis showed that in cases with major live resection, the operation time, volume of intraoperative blood loss, duration of postoperative hospital stay were 243.5(174.6,296.3)minutes, 200.0(150.0,600.0)mL, 7.5(6.0,13.0)days in the portal hypertension group, versus 270.0(180.0,314.5)minutes, 200.0 (75.0,450.0)mL, 7.0(5.5,10.0)days in the non-portal hypertension group, showing no significant difference in the above indicators between the two groups ( Z=-0.54, -1.73, -0.92, P>0.05). In cases with non-major live resection, the operation time, volume of intraoperative blood loss, duration of postoperative hospital stay were 170.0(120.0,227.5)minutes, 100.0(50.0,200.0)mL, 8.0(5.0,10.0)days in the portal hypertension group, versus 170.0(120.0,227.5)minutes, 100.0(50.0,200.0)mL, 7.0(5.5,9.0)days in the non-portal hypertension group, showing no significant difference in the above indicators between the two groups ( Z=-1.39, -0.10, 1.05, P>0.05). In cases with anatomical liver resection, the operation time, volume of intraoperative blood loss, duration of postoperative hospital stay were 210.0(150.0,285.0)minutes, 150.0(50.0,200.0)mL, 8.0(6.0,9.3)days in the portal hypertension group, versus 225.5(146.3,306.8)minutes, 100.0(50.0,250.0)mL, 7.0(6.0,9.0)days in the non-portal hypertension group, showing no significant difference in the above indica-tors between the two groups ( Z=-0.75, -0.26, -0.91, P>0.05). In cases with non-anatomical liver resection, the operation time, volume of intraoperative blood loss, duration of postoperative hospital stay were 173.5(120.0,231.5)minutes, 175.0(50.0,300.0)mL, 7.0(5.0,11.0)days in the portal hyper-tension group, versus 186.0(123.0,262.5)minutes, 100.0(50.0,200.0)mL, 7.0(5.0,9.5)days in the non-portal hypertension group, showing no significant difference in the above indicators between the two groups ( Z=-0.97, -1.12, -0.98, P>0.05). Conclusion:Minimally invasive liver resection or even major liver resection is safe and feasible for screened HCC patients complicated with portal hyper-tension, but attention should be paid to the prevention and treatment of postoperative complications.

Objective:To investigate the application of artificial intelligence based on the neural network radiation field in repair of soft tissue defects at lower limbs.Methods:A retrospective analysis was performed of the 23 patients who had been admitted to Department of Orthopedic Surgery, Renmin Hospital of Wuhan University from June 2020 to May 2022 for soft tissue defects at lower limbs. There were 14 males and 9 females, aged (38.6±6.7) years. Causes for soft tissue defects: traffic injury in 9 cases, benign or malignant primary soft tissue tumor in 6 cases, mechanical injury in 4 cases, crush injury in 2 cases, and chronic ulcer in 2 cases. Defect locations: the thigh in 3 cases, the lower leg in 7 cases, and the ankle and distal foot in 13 cases. The areas of soft tissue defect ranged from 6.0 cm×3.8 cm to 14.7 cm×12.8 cm. The defects were repaired and reconstructed by transplantation of an anterolateral femoral free flap in 7 cases and a pedicled flap in 16 cases with the assistance of artificial intelligence based on the neural network radiation field, a cutting-edge artificial intelligence algorithm that can quickly construct and process three-dimensional model images through volume rendering under the radiation field. The flap survival rate, aesthetic satisfaction before and after treatment, time for skin flap harvesting and transplantation, functional recovery of lower limbs and incidence of complications were recorded.Results:All the 23 patients were followed up for 32(28, 36) weeks. All the flaps were harvested smoothly and survived. The time for flap harvesting and transplantation was 65.8(50.0, 76.0) min. The aesthetic satisfaction scored (2.3±0.7) points before treatment and (8.4±1.6) points 4 weeks after treatment, showing a statistically significant difference ( P<0.05). The skin flaps healed well with no complications such as hematoma or infection in all but one patient who suffered from superficial necrosis at the distal skin flap due to venous crisis but healed with a scar. On average, the functional recovery of lower limbs scored 23.7(22.0, 25.0) points at 12 weeks after operation according to the Enneking evaluation system, and the functional recovery of lower limbs was 79% (23.7/30.0). Conclusion:Application of artificial intelligence based on the neural network radiation field can achieve ideal results in repair of soft tissue defects at lower limbs, due to its advantages of rapid and accurate surgical procedures, limited damage to the donor site, and a short learning curve.

OBJECTIVE: To evaluate the correlation of magnetic resonance (MR) T₂-weighted image (T₂WI) signal characteristics of adenomyosis and the efficacy of high-intensity focused ultrasound (HIFU) ablation. METHODS: Based on the presence or absence of patchy hyperintense foci on preoperative MR T₂WI, the patients with adenomyosis undergoing HIFU treatment were divided into homogeneous signal group and heterogeneous signal group, and the heterogeneous group was further divided into heterogeneous hypointense group and heterogeneous isointense group according to signal intensity of the lesions. The patients in heterogeneous signal group were matched with the patients in the homogeneous group at a 1:1 ratio using the propensity score matching, and similarly, the patients in the heterogeneous hypointense group were matched with those in the heterogeneous isointense group at a 1:1 ratio. The non-perfused volume ratio (NPVR) and relief of dysmenorrhea were used to assess the therapeutic efficacy in the 4 groups. RESULTS: A total of 299 patients were enrolled, who had a median preoperative dysmenorrhea score of 7.0 (6.0, 8.0) and a median NPVR of 53.5% (35.4, 70.1)%. After propensity score matching, the NPVR in homogeneous signal group was significantly higher than that in heterogeneous signal group [(60.3 ± 21.8)% vs (44.6±21.6)%, P < 0.05]. At 3, 6 and 12 months after HIFU, dysmenorrhea relief rates were higher in homogeneous signal group than in heterogeneous signal group, and the difference was statistically significant at 12 months (91.1% vs 76.8%, P < 0.05). The NPVR of heterogeneous hypointense group was higher than that of heterogeneous isointense group [(54.0±22.0) % vs (47.3± 22.9) %, P < 0.05]. At 6 months after HIFU, dysmenorrhea relief rate was significantly higher in heterogeneous hypointense group than in heterogeneous isointense group (91.5% vs 80.9%, P < 0.05). CONCLUSION The signal characteristics of adenomyosis on T₂WI are closely related with the outcome of HIFU ablation, and its efficacy is better for homogeneous than for heterogeneous adenomyosis, and better for heterogeneous hypointense adenomyosis than for heterogeneous isointense adenomyosis.
Female ; Humans ; Adenomyosis/pathology* ; Dysmenorrhea ; Cohort Studies ; Propensity Score ; High-Intensity Focused Ultrasound Ablation/methods* ; Treatment Outcome

Transjugular intrahepatic portosystemic shunt (TIPS) is a safe and effective method for the treatment of portal hypertension complications in patients with decompensated liver cirrhosis. At present, there are many prognostic scoring tools for risk stratification of poor prognosis after TIPS. This article briefly introduces seven prognostic scoring tools commonly used for TIPS and summarizes the clinical research evidence of each scoring tool. The literature review shows that there is currently no sufficient research evidence to determine the optimal prognostic scoring tool after TIPS. Future clinical studies should comprehensively explore the advantages and disadvantages of different scoring tools in predicting short- and long-term adverse prognostic events after TIPS and develop new prognostic scoring tools in combination with new prognostic markers.

Objective: To investigate family based child sexual abuse prevention education in rural areas of Luzhou, to provide guidance for child sexual abuse prevention and intervention. Methods: By stratified cluster sampling, from December 2021 to January 2022, 1 213 parents were investigated with the simplified scale of knowledge attitude practice of family sexual education. The influencing factors of family sexual education were analyzed by multiple linear regression. Results: The score of family sexual abuse prevention education in rural areas of Luzhou was (11.21 ± 3.99), and the pass rate was 51.69%. The results showed that maternal education of junior high school ( β =0.79), senior high school / technical secondary school( β =1.26) and bachelor / college degree or above( β =1.75), mothers to be the main educators ( β =1.29) were positively associated with, while being girls( β =-0.41) and left behind children ( β =-0.59) were negatively associated with family child sex abuse prevention education score( P <0.05). Children received sex education in school( β =0.81), adequate knowledge of sex education of parents ( β =1.11), positive attitudes towards sex education of parents ( β =1.51), communication with relatives and friends regarding sex education of parents ( β =1.94), parents having participated in sex education related activities( β =0.67) were positively associated with family child sex abuse prevention education score( P <0.05). Conclusion Family based child sexual abuse prevention education in rural areas of Luzhou is insufficient. Relevant departments need to set up personalized intervention measures according to the different conditions of families, carry out relative education activities, to improve the level of sex education of rural families and improve their awareness of self prevention.