1.Research progress on female reproductive toxicity of bisphenols
Jia PENG ; Xiangzhu YAN ; Jiasi LIU ; Xiaopeng ZHONG ; Simin YAO ; Yiyan MA ; Shuhua TAN
Journal of Environmental and Occupational Medicine 2025;42(7):862-869
Bisphenols (BPs) are extensively used in food packaging, personal care products, and plastics, making them prevalent in both living and working environments, which has raised significant concern. As endocrine-disrupting chemicals, BPs exert toxic effects on the female reproductive system by binding to estrogen receptors, thereby activating or inhibiting the expression of genes related to reproductive functions, which disrupts the normal function of the endocrine system. This paper reviewed the effects of bisphenol A (BPA), bisphenol S (BPS), and bisphenol F (BPF) on female reproductive function, focusing on three key aspects: the effects on the female reproductive organs, the occurrence of associated reproductive disorders, and the mechanisms of toxicity. Specifically, this review highlighted the effects on ovarian function, uterine morphology and function, and fallopian tube function, as well as their correlation with polycystic ovary syndrome, endometriosis, miscarriage, and eclampsia. Additionally, the toxic mechanisms of BPs exposure were summarized, providing a scientific basis for future research on the impact of BPs on the female reproductive system, as well as for the assessment of potential health risks and the development of preventive measures.
2.Parkin inhibits iron overload-induced cardiomyocyte ferroptosis by ubiquitinating ACSL4 and modulating PUFA-phospholipids metabolism.
Dandan XIAO ; Wenguang CHANG ; Xiang AO ; Lin YE ; Weiwei WU ; Lin SONG ; Xiaosu YUAN ; Luxin FENG ; Peiyan WANG ; Yu WANG ; Yi JIA ; Xiaopeng TANG ; Jianxun WANG
Acta Pharmaceutica Sinica B 2025;15(3):1589-1607
Iron overload is strongly associated with heart disease. Ferroptosis is a new form of regulated cell death indicated in cardiac ischemia-reperfusion (I/R) injury. However, the specific molecular mechanism of myocardial injury caused by iron overload in the heart is still unclear, and the involvement of ferroptosis in iron overload-induced myocardial injury is not fully understood. In this study, we observed that ferroptosis participated in developing of iron overload and I/R-induced cardiomyopathy. Mechanistically, we discovered that Parkin inhibited iron overload-induced ferroptosis in cardiomyocytes by promoting the ubiquitination of long-chain acyl-CoA synthetase 4 (ACSL4), a crucial protein involved in ferroptosis-related lipid metabolism pathways. Additionally, we identified p53 as a transcription factor that transcriptionally suppressed Parkin expression in iron-overloaded cardiomyocytes, thereby regulating iron overload-induced ferroptosis. In animal studies, cardiac-specific Parkin knockout mice (Myh6-CreER T2 /Parkin fl/fl ) fed a high-iron diet presented more severe myocardial damage, and the high iron levels exacerbated myocardial I/R injury. However, the ferroptosis inhibitor Fer-1 significantly suppressed iron overload-induced ferroptosis and myocardial I/R injury. Moreover, Parkin effectively protected against impaired mitochondrial function and prevented iron overload-induced mitochondrial lipid peroxidation. These findings unveil a novel regulatory pathway involving p53-Parkin-ACSL4 in heart disease by inhibiting of ferroptosis.
3.Development of the robotic digestive endoscope system and an experimental study on mechanistic model and living animals (with video)
Bingrong LIU ; Yili FU ; Kaipeng LIU ; Deliang LI ; Bo PAN ; Dan LIU ; Hao QIU ; Xiaocan JIA ; Jianping CHEN ; Jiyu ZHANG ; Mei WANG ; Fengdong LI ; Xiaopeng ZHANG ; Zongling KAN ; Jinghao LI ; Yuan GAO ; Min SU ; Quanqin XIE ; Jun YANG ; Yu LIU ; Lixia ZHAO
Chinese Journal of Digestive Endoscopy 2024;41(1):35-42
Objective:To develop a robotic digestive endoscope system (RDES) and to evaluate its feasibility, safety and control performance by experiments.Methods:The RDES was designed based on the master-slave control system, which consisted of 3 parts: the integrated endoscope, including a knob and button robotic control system integrated with a gastroscope; the robotic mechanical arm system, including the base and arm, as well as the endoscopic advance-retreat control device (force-feedback function was designed) and the endoscopic axial rotation control device; the control console, including a master manipulator and an image monitor. The operator sit far away from the endoscope and controlled the master manipulator to bend the end of the endoscope and to control advance, retract and rotation of the endoscope. The air supply, water supply, suction, figure fixing and motion scaling switching was realized by pressing buttons on the master manipulator. In the endoscopy experiments performed on live pigs, 5 physicians each were in the beginner and advanced groups. Each operator operated RDES and traditional endoscope (2 weeks interval) to perform porcine gastroscopy 6 times, comparing the examination time. In the experiment of endoscopic circle drawing on the inner wall of the simulated stomach model, each operator in the two groups operated RDES 1∶1 motion scaling, 5∶1 motion scaling and ordinary endoscope to complete endoscopic circle drawing 6 times, comparing the completion time, accuracy (i.e. trajectory deviation) and workload.Results:RDES was operated normally with good force feedback function. All porcine in vivo gastroscopies were successful, without mucosal injury, bleeding or perforation. In beginner and advanced groups, the examination time of both RDES and ordinary endoscopy tended to decrease as the number of operations increased, but the decrease in time was greater for operating RDES than for operating ordinary endoscope (beginner group P=0.033; advanced group P=0.023). In the beginner group, the operators operating RDES with 1∶1 motion scaling or 5∶1 motion scaling to complete endoscopic circle drawing had shorter completion time [1.68 (1.40, 2.17) min, 1.73 (1.47, 2.37) min VS 4.13 (2.27, 5.16) min, H=32.506, P<0.001], better trajectory deviation (0.50±0.11 mm, 0.46±0.11 mm VS 0.82±0.26 mm, F=38.999, P<0.001], and less workload [42.00 (30.00, 50.33) points, 43.33 (35.33, 54.00) points VS 52.67 (48.67, 63.33) points, H=20.056, P<0.001] than operating ordinary endoscope. In the advanced group, the operators operating RDES with 1∶1 or 5∶1 motion scaling to complete endoscopic circle drawing had longer completion time than operating ordinary endoscope [1.72 (1.37, 2.53) min, 1.57 (1.25, 2.58) min VS 1.15 (0.86, 1.58) min, H=13.233, P=0.001], but trajectory deviation [0.47 (0.13, 0.57) mm, 0.44 (0.39, 0.58) mm VS 0.52 (0.42, 0.59) mm, H=3.202, P=0.202] and workload (44.62±21.77 points, 41.24±12.57 points VS 44.71±17.92 points, F=0.369, P=0.693) were not different from those of the ordinary endoscope. Conclusion:The RDES enables remote control, greatly reducing the endoscopists' workload. Additionally, it gives full play to the cooperative motion function of the large and small endoscopic knobs, making the control more flexible. Finally, it increases motion scaling switching function to make the control of endoscope more flexible and more accurate. It is also easy for beginners to learn and master, and can shorten the training period. So it can provide the possibility of remote endoscopic control and fully automated robotic endoscope.
4.Correlation between serum albumin, urea nitrogen and Fazekas scores and cognitive function in patients with mild and medium ischemic stroke
Ying GUI ; Lijuan LI ; Xian LI ; Ting LIU ; Xiaopeng GUO ; Dandan JIA ; Lin MA
Clinical Medicine of China 2024;40(3):161-168
Objective:To investigate the correlation between serum albumin, urea nitrogen and Fazekas scores and cognitive function scores in patients with mild and medium ischemic stroke.Methods:Clinical data of 160 patients with acute ischemic stroke with the National Institutes of Health Stroke Scale (NIHSS)≤7 scores admitted to the Department of Neurology of the First Affiliated Hospital of Hainan Medical College from June 2021 to April 2023 were selected for a cross-sectional study. According to the Montreal Cognitive Assessment (MoCA) score, they were divided into normal cognitive group (28 cases) (MoCA≥26 scores), mild to moderate cognitive impairment group (74 cases) (MoCA 15-<26 scores), and severe cognitive impairment group (58 cases) (MoCA<15 scores). Demographic characteristics, serological indicators and imaging data of patients were collected, and the correlation between serum albumin, urea nitrogen and Fazekas scores and the total score of MoCA and the scores of each cognitive domain was analyzed. One-way ANOVA was used for comparison between the normal distribution and homogeneous variance data sets, LSD analysis was used for pairwise comparison, Kruskal-Wallis H test was used between the skew distribution or heterogeneous variance data sets. Bonferroni correction analysis was used for pairwise comparison. Chi-square test or Fisher exact probability method was used after the comparison between the count data sets. Spearman Spearman correlation analysis was performed on serum albumin, urea nitrogen and Fazekas scores with MoCA scores and cognitive domain scores. Multivariate ordered Logistic regression was used to analyze the independent risk factors of cognitive function in acute stage of mild and medium ischemic stroke patients. Results:The incidence of cognitive impairment in patients with acute mild and medium ischemic stroke was 82.50% (132/160). Comparison of age ((56.71±7.35), (60.32±10.20), (66.40±11.88) years old), sex (male/female: (23/5, 58/16, 33/25)), the proportion of education level above high school (25.0%(7/28), 16.2%(12/74), 6.9%(4/58)), hemoglobin ((149.26±14.91), (144.85±16.85), (137.63±17.22) g/L), albumin (39.5 (37.0, 41.2), 38.6(35.6, 40.8), 37.4 (34.5, 39.8) g/L), urea nitrogen (5.30 (4.00, 6.60), 4.81 (4.00, 6.32), 5.86 (4.55, 6.97) mmol/L), Hamilton Anxiety Scale (HAMA) score (5.0 (2.0, 10.0), 7.5 (5.0, 11.0), 10.0 (6.0, 14.3) scores),Hamilton Depression Scale (HAMA) score (5.5 (3.0, 12.5), 7.0 (4.0, 11.0), 9.5 (5.0, 14.0) scores), and Fazekas score (2.00 (1.25, 3.00), 2.00 (1.00, 4.00), 3.00 (2.00, 5.00) scores) among cognitive normal group, mild to moderate cognitive impairment group, and severe cognitive impairment group of patients, the difference were statistically significant (the statistical values were F=9.68, χ 2=9.29, χ 2=30.77, F=5.31, H=7.06, H=6.71, H=12.37, H=8.91, and H=10.96, respectively;the P values were <0.001, 0.010, <0.001, 0.006, 0.029, 0.035, 0.002, 0.012, and 0.004, respectively ). The total score of MoCA was negatively correlated with Fazekas score and serum urea nitrogen, but positively correlated with serum albumin ( r s values were -0.250, -0.168, and 0.212, respectively; P values were 0.001, 0.036, and 0.009, respectively). Serum albumin was positively correlated with scores in visual space and execution, naming, attention and orientation, serum urea nitrogen was negatively correlated with scores in language and orientation, and Fazekas score was negatively correlated with scores in visual space and execution, orientation, attention and language ( r s values were 0.291, 0.196, 0.191, 0.209, -0.205, -0.180, -0.248, -0.193, -0.188, and -0.183, respectively; P values were <0.001, 0.017, 0.020, 0.011, 0.012, 0.027, 0.002, 0.016, 0.020, and 0.023, respectively). Multiple Logistic regression analysis showed that low albumin ( OR=0.884, 95% CI: 0.813-0.963, P=0.005) and high urea nitrogen ( OR=1.195, 95% CI: 1.003-1.425, P=0.047) and high Fazekas scores ( OR=1.401, 95% CI: 1.132-1.733, P=0.002) were independent risk factors for cognitive function, while high education level was a protective factor ( OR=0.062, 95% CI: 0.019-0.202, P<0.001). Conclusion:The incidence of acute cognitive impairment is high in patients with mild and medium ischemic stroke. Higher education level is a protective factor for cognitive function. Low albumin, high urea nitrogen and high Fazekas score are independent risk factors for cognitive function.
5.Treatment of basilar artery trunk aneurysms
Yuange BI ; Xuan CHEN ; Zhongxi YANG ; Xiuyun JIA ; Xiaopeng SONG ; Jing ZHOU
International Journal of Cerebrovascular Diseases 2023;31(6):462-466
Basilar artery trunk aneurysms (BTAs) are relatively rare, with poor natural prognosis, high disability and mortality rates. The treatment options for BTAs includes conservative treatment, craniotomy, and endovascular treatment. Due to the deep anatomical structure, rich perforating vessels, and complex pathological structure of the basilar artery, craniotomy is more difficult. There is currently no consensus on the treatment of BTAs. This article reviews the current treatment status of BTAs, aiming to provide reference for clinical work.
6.The feasibility and safety of day surgery for palmar hyperhidrosis based on the principles of enhanced recovery after surgery: A retrospective cohort study
Haiqi HE ; Heng ZHAO ; Lei MA ; Zhe WANG ; Xiaopeng WEN ; Jia ZHANG ; Zhuoqi JIA ; Qifei WU ; Yong ZHANG ; Guangjian ZHANG ; Junke FU
Chinese Journal of Clinical Thoracic and Cardiovascular Surgery 2023;30(11):1556-1560
Objective To investigate the safety and feasibility of day surgery for patients with palmar hyperhidrosis based on the principles of enhanced recovery after surgery (ERAS). Methods We retrospectively reviewed the medical records of consecutive patients who underwent endoscopic thoracic sympathicotomy (ETS) in the First Affiliated Hospital of Xi'an Jiaotong University from March 2020 to December 2021. Patients were divided into a day surgery group and a conventional group according to their perioperative management methods. The patients in the day surgery group underwent an optimized perioperative procedure under the guidance of ERAS, and were ventilated with a laryngeal or face mask during the operation. The patients in the conventional group completed the preoperative examination, operation and postoperative observation according to the conventional procedures, and were intubated with a single-lumen endotracheal tube. The demographic characteristics, operation time, hospital stay, postoperative complications, and hospitalization cost were compared between the two groups. Results Finally 172 patients were collected, including 90 males and 82 females, with an average age of 25.97±7.43 years. There were 86 patients in each group. All patients ceased suffering from palmar sweating after surgery. No patient experienced massive bleeding or conversion to thoracotomy. There was no statistical difference in operation time between the two groups (P=0.534). Patients in the day surgery group were discharged within 24 hours. The average hospital stay in the conventional group was 2.09±0.41 days. Incidence of postoperative respiratory complications, and the hospitalization cost of the day surgery group were significantly lower than those of the conventional group (P<0.001). The satisfaction rate in both groups was greater than 95%. Conclusion Day surgery for patients with palmar hyperhidrosis based on the principles of ERAS is safe and feasible, which can reduce postoperative complications, shorten the length of hospital stay and save the cost of hospitalization.
7.Application of semiconductor blue laser in day surgery for 22 cases of bladder cancer
Pengyi ZHENG ; Jia GUO ; Xiaopeng MEI ; Yumei JIANG ; Jinhai FAN ; Lei LI ; Qiang WANG ; Dalin HE ; Kaijie WU
Journal of Modern Urology 2023;28(2):119-121
【Objective】 To investigate the feasibility and safety of semiconductor blue laser in the treatment of non-muscle invasive bladder cancer (NMIBC) in the day surgery model. 【Methods】 The clinical data of 22 NMIBC patients (average age 55.8 years and tumor size 1.4 cm) who underwent outpatient screening and accepted blue laser ambulatory surgery in our hospital during Jun.2022 and Sep.2022 were retrospectively analyzed. On the day of admission, transurethral resection of cancer was performed using blue laser en bloc enucleation. On the day of surgery or in the morning of next day, bladder irrigation was stopped, the catheter was removed, and patients were discharged. The baseline data, pre-hospital waiting time, operation time, length of hospital stay, hemoglobin decrease, complications and management, follow-up, medical costs, and patients’ satisfaction rate were recorded. 【Results】 The pre-hospital waiting time was 2 to 7 days, average (4.1±1.3)days. The operation time was 29 to 50 minutes, average (40.8±5.5)minutes. The length of hospital stay was 0.6 to 1.2 days, average (0.9±0.2)days. Hemoglobin decrease was 1 g/L to 8 g/L, average (3.8±1.8)g/L. The catheter was indwelt for 0.5 to 1 day, average (0.7±0.1)day. The medical costs were 13 790 to 16 811 Yuan, average (14 941.5±690.2) Yuan. Patients’ satisfaction rate was 100.0%. Mild intraoperative and postoperative complications occurred in 2 cases. One patient developed symptoms of cystitis which disappeared after 2 days of oral antibiotic cefixime, and another patient developed bladder spasm which was relieved after oral solifenacin succinate tablets. No adverse events such as obturator nerve reflex or bladder perforation occurred. After removal of the catheter, no urinary retention was observed. 【Conclusion】 This study was the first to apply blue laser ambulatory surgery in the treatment of bladder cancer, confirming that it is a safe, feasible, economical and efficient model for selected patients, which can be promoted in suitable hospitals.
8.Xylazole inhibits NO-cGMP pathway in fetal rat nerve cells
Xinyu WANG ; Yue WU ; Lin LIU ; Hui BAI ; Zhiheng ZHANG ; Mingchao ZHAO ; Tianwen MA ; Xiaopeng SONG ; Lina JIA ; Liangyu LV ; Yue YU ; Xinyu XU ; Hong CHEN ; Li GAO
Journal of Veterinary Science 2022;23(1):e16-
Background:
Xylazole (Xyl) is a veterinary anesthetic that is structurally and functionally similar to xylazine. However, the effects of Xyl in vitro remain unknown.
Objectives:
This study aimed to investigate the anesthetic mechanism of Xyl using fetal rat nerve cells treated with Xyl.
Methods:
Fetal rat nerve cells cultured for seven days were treated with 10, 20, 30, and 40 μg/ mL Xyl for 0, 5, 10, 15, 20, 25, 30, 45, 60, 90, and 120 min. Variations of amino acid neurotransmitters (AANTs), Nitric oxide-Cyclic GMP (NO-cGMP) signaling pathway, and ATPase were evaluated.
Results:
Xyl decreased the levels of cGMP and NO in nerve cells. Furthermore, Xyl affected the AANT content and Na+ -K+ -ATPase and Ca2+ -Mg2+ -ATPase activity in nerve cells. These findings suggested that Xyl inhibited the NO-cGMP signaling pathway in nerve cells in vitro.
Conclusions
This study provided new evidence that the anesthetic and analgesic effects of Xyl are related to the inhibition of the NO-cGMP signaling pathway.
9.Adrenal Castleman disease: a case report
Qingxu ZHANG ; Zhiguo SONG ; Wei WANG ; Xiaopeng JIA ; Shijie YANG ; Jianguo MA
Chinese Journal of Urology 2021;42(10):780-781
Adrenal Castleman's disease is rare. One case of left adrenal Castleman's disease, who underwent retroperitoneal laparoscopic left adrenal gland and tumor resection. The postoperative pathological diagnosis was adrenal Castleman's disease (transparent vascular type), and no tumor recurrence was found after 2 years of follow-up.
10.Application of HaiMed refractory wound artificial intelligence assisted system in wound measurement
Xu CHANG ; Huahuang HU ; Bangfei JIA ; Yugang LIU ; Xuezhi YANG ; Xiaopeng LI ; Hongsen BI
Chinese Journal of Plastic Surgery 2021;37(1):35-39
Objective:To assess the accuracy and practicability of HaiMed refractory wound artificial intelligence assisted system in wound measurement.Methods:Twenty patients with chronic wounds who were diagnosed and treated from January 2019 to August 2019 in the Plastic Surgery Department of Peking University Third Hospital, including 12 males and 8 females, aged 20-76 years old. The cases included 9 poorly healed wounds, 6 diabetic foot wounds, 4 cases of pressure sores, and 1 case of tumor wounds. The traditional transparent film method and HaiMed system were used to measure the wound area of 20 cases. A paired t-test was performed on the measurement result of the two groups of wound area, and the accuracy and stability of the HaiMed system were statistically analyzed by Spearman simple correlation analysis, Bland-Altman evaluation and coefficient of variation. P<0.05 indicated that the difference was statistically significant. Results:Compared with traditional measurement tools, HaiMed system had no statistically significant difference in wound area measurement ( t=1.997, P=0.060). The Spearman correlation coefficient ( r=0.998) of the two method was consistent. Bland-Altman’s evaluation showed that all scattered points fell within the 95% consistency limit, and the HaiMed system was accurate and reliable. The minimum coefficient of variation of the transparent film hem method group was 0.41%, the maximum was 4.03%, and the average was 1.67%; the coefficient of variation of the HaiMed group was minimum 0.15%, the maximum was 2.31%, and the average was 0.60%. The two had good consistency, and the HaiMed system had higher stability than traditional measurement method. Conclusions:HaiMed system measures the wound area with high accuracy and good stability, especially for superficial wounds. It can be easily and quickly evaluated. HaiMed system is a new and reliable wound measurement tool.

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