1.Relationship Between Single-Leg Standing Posture Control and Ankle Plantar Flexor Muscle Stability under Visual and Proprioceptive Interference
Chong WANG ; Mengyi WU ; Pengfei WANG ; Zeyu XING ; Hongfeng HUO
Journal of Medical Biomechanics 2025;40(5):1193-1199
Objective To explore the correlation between single-leg standing posture control and ankle plantar flexor muscle stability,so as to provide a new theoretical basis for improving the ability of human posture control.Methods A total of 20 healthy male college students were randomly selected as the experimental subjects.The iBalance tester and training system was used to test the trajectory data of the center of pressure(COP)of the foot standing on one leg.The CON-TREX MJ multi-joint isokinetic test and training system was used to test the moment amplitude data during the contraction of ankle plantar flexor muscles.Univariate repeated measures variance analysis was used to analyze the standard deviation data of ankle plantar flexor moment amplitude between groups.The Pearson correlation coefficient was used to study the correlation.Results The greater the intensity of the muscle stabilization task performed by the ankle plantar flexor muscle,the greater the standard deviation of the moment amplitude.The C90 area was positively correlated with the coefficient of variation(CV)of the 10%maximum voluntary contraction(MVC)moment of ankleplantar flexor muscle(r=0.761,P<0.05)during single-leg standing without interference.The C90 area was positively correlated with the CV(r=0.632,P<0.05)of the 30%MVC moment of ankle plantar flexor muscle during single-leg standing.When the proprioception was interfered during single-leg standing,the C90 area was positively correlated with the CV(r=0.583,P<0.05)of the 20%MVC moment amplitude of ankleplantar flexor muscle.Conclusions With the increasing difficulty of muscle strength stabilization performed by the ankle plantar flexor muscles,muscle stability decreases.There is a positive correlation between ankle plantar flexor strength stability and single-leg standing posture control.Compared with the case without interference,under visual and proprioceptive interference,an additional information input is reduced or disturbed,and it is more difficult to maintain body balance,and the ankle plantar flexor muscle needs a higher muscle stability in the force mode to participate in the posture control of the human body during single-leg standing.
2.Relationship Between Single-Leg Standing Posture Control and Ankle Plantar Flexor Muscle Stability under Visual and Proprioceptive Interference
Chong WANG ; Mengyi WU ; Pengfei WANG ; Zeyu XING ; Hongfeng HUO
Journal of Medical Biomechanics 2025;40(5):1193-1199
Objective To explore the correlation between single-leg standing posture control and ankle plantar flexor muscle stability,so as to provide a new theoretical basis for improving the ability of human posture control.Methods A total of 20 healthy male college students were randomly selected as the experimental subjects.The iBalance tester and training system was used to test the trajectory data of the center of pressure(COP)of the foot standing on one leg.The CON-TREX MJ multi-joint isokinetic test and training system was used to test the moment amplitude data during the contraction of ankle plantar flexor muscles.Univariate repeated measures variance analysis was used to analyze the standard deviation data of ankle plantar flexor moment amplitude between groups.The Pearson correlation coefficient was used to study the correlation.Results The greater the intensity of the muscle stabilization task performed by the ankle plantar flexor muscle,the greater the standard deviation of the moment amplitude.The C90 area was positively correlated with the coefficient of variation(CV)of the 10%maximum voluntary contraction(MVC)moment of ankleplantar flexor muscle(r=0.761,P<0.05)during single-leg standing without interference.The C90 area was positively correlated with the CV(r=0.632,P<0.05)of the 30%MVC moment of ankle plantar flexor muscle during single-leg standing.When the proprioception was interfered during single-leg standing,the C90 area was positively correlated with the CV(r=0.583,P<0.05)of the 20%MVC moment amplitude of ankleplantar flexor muscle.Conclusions With the increasing difficulty of muscle strength stabilization performed by the ankle plantar flexor muscles,muscle stability decreases.There is a positive correlation between ankle plantar flexor strength stability and single-leg standing posture control.Compared with the case without interference,under visual and proprioceptive interference,an additional information input is reduced or disturbed,and it is more difficult to maintain body balance,and the ankle plantar flexor muscle needs a higher muscle stability in the force mode to participate in the posture control of the human body during single-leg standing.
3.Consideration and Suggestions on Dosage Labeling Issues in Chinese Patent Medicines Instructions
Juan XU ; Gaiping WANG ; Yu ZHANG ; Lingjun DONG ; Junfei WANG ; Hongfeng LIU ; Weihong CHEN
Herald of Medicine 2025;44(5):720-726
Objective To explore a standardized approach for indicating dosages in Chinese patent medicines(CPM)instructions.Methods A review of 1 378 classic formulas of traditional Chinese medicine in the 2020 edition of the Pharmaco-poeia of the People's Republic of China(Chinese Pharmacopoeia)was conducted,focusing on three aspects:overdose,different dosage forms,and inclusion of toxic herbs.Approximately 50 representative formulas were selected,and their daily dosage of herbal pieces and the corresponding dosage of individual herbs were calculated.These results were then compared and analyzed against the dosages stipulated in the Chinese Pharmacopoeia.Results ①Overdose:Among the 1 378 reviewed formulas,146(10.60%)were found to involve overdose.Specifically,eight formulas were identified as having an overdose of approximately 3 to 5 times the recommended dose,including Duanxueliu tablets and Zhixue Fumai mixture.②Dosage variations across dosage forms:Based on the conversion of the Ming-Qing dynasty dosage of one liang(Chinese traditional weight unit)to 36 g,the estimated dai-ly dose per component of crude herbs in Yinqiao powder was close to the upper limit specified in the Chinese Pharmacopoeia.The total daily dose of crude herbs(75.60 g)was approximately five times that of the Yinqiao powder(15 g)listed in the Chinese Pharmacopoeia and three times that of the Japanese Kampo Yinqiao powder(23.868 g).Significant differences in dosage were ob-served among Yinqiao Jiedu preparations of different dosage forms.In terms of total daily dose of crude herbs,granules(52.50 g)had the highest dose,approximately 3-5 times that of tablets/capsules(11.20 g),soft capsules(13.44 g),and powders(15.00 g),but still 30% lower than the original prescription from ancient texts(75.6 g).Comparing the daily dose per compo-nent,granules fell within the Chinese Pharmacopoeia dose range,while tablets,capsules,soft capsules,and powders were all below the Chinese Pharmacopoeia dose.③Inclusion of toxic herbs:Among the 20 oral formulations containing Strychnos nux-vomica(Maqianzi)listed in the Chinese Pharmacopoeia,seven species exceeded the pharmacopoeial dose of 0.3-0.6 g per day.Notably,Shenjin Huoluo pill and Shufeng Dingtong pill exceeded the Chinese Pharmacopoeia dose by 1.5-2 times.The daily dose of strych-nosine in Shenjin Huoluo pill was 21.3 mg,exceeding the toxic dose range of 5-10 mg.Conclusions The dosage indications in CPM instructions must adhere to a unified format,clearly stating the daily dose per component of crude herbs,the total daily dose of crude herbs,and the total number of administrations under the"Dosage and Administration"section.For instance,"Yinqiao Jiedu granules,with a total daily dose equivalent to 60 g of crude herbs taken in four doses(including:Flos Lonicerae 10.71 g,Fructus Forsythiae 10.71 g,Radix Platycodi 6.43 g,Herba Menthae Haplocalycis 6.43 g,Fructus Arctii 6.43 g,Semen Sojae Preparatum 5.36 g,Radix Glycyrrhizae 5.36 g,Herba Lophatheri 4.29 g,Herba Schizonepetae 4.29 g)."For CPM containing tox-ic herbs,dosage indications are even more crucial,such as specifying the daily dose of Maqianzi powder/processed Maqianzi and strychnosine in formulations containing this herb.
4.STAR Guideline Terminology(Ⅲ):Reporting,Evaluation,Dissemination,Implementation and Updating
Hongfeng HE ; Hui LIU ; Qianling SHI ; Yuanyuan YAO ; Yishan QIN ; Zijun WANG ; Jinhui TIAN ; Long GE ; Xiaohui WANG ; Yaolong CHEN
Medical Journal of Peking Union Medical College Hospital 2025;16(4):1018-1025
Objective To sort,summarize,and introduce key terms related to guideline reporting,evaluation,dissemination,implementation,and updating.Methods We systematically searched guideline de-velopment manuals and methodological literature from database inception to October 25,2024.Terms related to guideline reporting,updating,evaluation,and implementation were extracted,standardized,and finalized through a structured consensus process.Results A total of 13 guideline manuals and 32 methodological articles were included,yielding 14 core terms with standardized definitions.Conclusions This article introduces key terms such as reporting standards,external review,and research gaps across guideline development phases to promote concept application and deepen readers'understanding of guideline development.
5.Effect of dual tasks with different cognitive loads on prefrontal lobe activation and static posture control in young men
Mengyi WU ; Chong WANG ; Pengfei WANG ; Zeyu XING ; Hongfeng HUO
Chinese Journal of Rehabilitation Theory and Practice 2025;31(11):1322-1332
Objective To explore the effect of cognitive-motor dual tasks with different cognitive loads(none,simple and difficult)on activation of prefrontal cortex and static posture control in young man.Methods From June to July,2024,27 healthy male college students were recruited in Hebei Normal University.Static postural control parameters(C90 area),lower limb electromyography data(muscle energy proportion)and pre-frontal cortex hemodynamic signals of subjects under single task without cognitive load,dual-task with simple cognitive load,and dual-task with difficult cognitive load were collected using a balanced testing and training system,a wireless surface electromyography device,and functional near-infrared spectroscopy technology.Results The C90 areas of dual-tasks with simple and difficult cognitive load were smaller than that of the single task without cognitive load(P<0.05).The proportion of β band energy in the medial and lateral gastrocnemius mus-cles in the dual-task with simple cognitive load was greater than that in the single task without cognitive load(P<0.05),while the proportion of piper band energy in the lateral gastrocnemius muscle and tibialis anterior muscle was less(P<0.05).During dual-task with difficult cognitive load,the activation levels of bilateral ventro-lateral prefrontal cortex and right dorsolateral prefrontal cortex were higher than those in the single task without cognitive load(P<0.05).Conclusion Dual tasks with appopriate cognitive loads are effective on postural stability in young man.Simple cognitive load promote posture maintenance through optimizing the neuromuscular control of the lower limb muscle groups,while difficult cognitive load through activating the right prefrontal cortex involved in working memory and executive control,involving the neurocognitive compensatory.
6.Prognostic analysis of local excision in 153 cases of locally advanced low rectal cancer following neoadjuvant therapy
Hongfeng PAN ; Jiahong YE ; Heyuan ZHU ; Xiaojie WANG ; Yanwu SUN ; Zhifen CHEN ; Zongbin XU ; Shenghui HUANG ; Weizhong JIANG ; Pan CHI ; Ying HUANG
Chinese Journal of Gastrointestinal Surgery 2025;28(11):1250-1259
Objective:To evaluate the short-term and long-term outcomes of patients with locally advanced low rectal cancer who achieved clinical complete response (cCR) or near-clinical complete response (near-cCR) after neoadjuvant chemoradiotherapy (nCRT) and then underwent local excision.Methods:This was a descriptive case series study. Clinical data of patients with low rectal cancer who received neoadjuvant therapy, achieved cCR or near-cCR, underwent local excision, and had complete postoperative follow-up data were retrospectively analyzed. The study period was from May, 2015 to October, 2024, and the patients were treated at Fujian Medical University Union Hospital. Indications for local excision in this study were as follows: pathologically confirmed rectal adenocarcinoma, with the lower edge of the tumor ≤ 6 cm from the anal verge; maximum diameter of the lesion ≤ 2 cm after nCRT; no regional lymph node metastasis detected by transrectal endoscopic ultrasound (ERUS), pelvic magnetic resonance imaging (MRI), or positron emission tomography-computed tomography (PET-CT) after nCRT; MRI showing fibrosis of the primary lesion with a small amount of high signal on diffusion-weighted imaging (DWI), consistent with ymrT0-1 stage; serum carcinoembryonic antigen level within the normal range (< 5 μg/L) after nCRT; complicated with severe underlying diseases such as cardiovascular and cerebrovascular diseases and assessed as unable to tolerate radical surgery through comprehensive evaluation; and signed informed consent for local excision. The contraindications were: colonoscopic pathology indicating poorly differentiated adenocarcinoma or signet ring cell carcinoma; suspected lateral lymph node metastasis before neoadjuvant therapy; patients with residual lesions exceeding 3 cm in range after treatment. A total of 153 patients were included in this study, including 84 males and 69 females. The median age was 62 years, and the median distance from the tumor to the anal verge after neoadjuvant therapy was 4.0 cm. The short-term efficacy indicators of this study included postoperative complications of local excision and postoperative pathological results, and the long-term efficacy indicators included oncological prognosis (3-year cumulative local recurrence rate, 3-year cumulative distant metastasis rate, 3-year progression-free survival, and 3-year overall survival) and anal function at 1 year after surgery evaluated using the Low Anterior Resection Syndrome (LARS) scale where the total score is 42 points such that 0-20 points indicate no LARS, 21-29 points indicate mild LARS, and 30-42 points indicate severe LARS.Results:Postoperative pathology showed 122 cases (79.7%) of ypT0 stage, 10 cases (6.5%) of ypT1 stage, 18 cases (11.8%) of ypT2 stage, and 3 cases (2.0%) of ypT3 stage. The incidence of surgery-related complications was 42.5% (65/153), and the main complications included perianal pain (39.9%, 61/153), intestinal wall incision dehiscence (21.6%, 33/153), and intestinal wall incision infection (18.3%, 28/153). The proportion of patients who received hypofractionated radiotherapy before surgery and developed intestinal wall incision dehiscence was 65.2% (15/23), which was higher than that in the conventional long-course (13.6%, 16/118) and short-course radiotherapy groups (16.7%,2/12) (χ 2=30.55, P<0.001); of the 20 patients who received additional immunotherapy before surgery, 13 developed intestinal wall incision dehiscence was 65.0%, which was higher than that in the group without additional immunotherapy [15.0%(20/133),χ 2=25.66, P<0.001]. The median follow-up time of the entire group was 35.4 months. During the follow-up period, there were 9 cases of postoperative local recurrence, with a 3-year cumulative local recurrence rate of 7.9% and 5 cases of distant metastasis, with a 3-year cumulative distant metastasis rate of 5.0%. The 3-year progression-free survival rate was 89.0%, and the 3-year overall survival rate was 95.9%. At 1 year after surgery, 10 cases (10.5%, 10/95) had severe anal dysfunction, and the median LARS score of the entire group was 5.0 (range: 0-41.0) points. Conclusions:For patients with locally advanced low rectal cancer who achieve cCR or near-cCR after neoadjuvant therapy, local excision results in favorable oncological prognosis and anal function preservation effects; however, the incidence of complications is relatively high.
7.STAR Guideline Terminology(Ⅱ): Clinical Question Formulation, Evidence Retrieval and Appraisal, and Recommendation Development
Di ZHU ; Haodong LI ; Zijun WANG ; Qianling SHI ; Hui LIU ; Yishan QIN ; Yuanyuan YAO ; Zhewei LI ; Hongfeng HE ; Jinhui TIAN ; Long GE ; Yaolong CHEN ;
Medical Journal of Peking Union Medical College Hospital 2025;16(3):756-764
To introduce and analyze guideline terminology related to clinical question formulation, evidence retrieval and appraisal, and recommendation development. A systematic search was conducted in guideline development manuals and relevant methodological literature, covering publications up to October 25, 2024. Terminology related to the three aforementioned stages of related to guideline development was extracted from the included literature, standardized, and refined through consensus meetings to finalize a comprehensive terminology list and definitions. A total of 30 guideline development manuals and 15 methodological articles were included, and 23 core terms were identified. It is recommended to develop a standardized and scientifically sound guideline terminology system with unified naming, clear definitions, and alignment with the linguistic environment and usage habits in China. At the same time, it is essential to strengthen terminology training for both guideline developers and users based on this system, in order to deepen their correct understanding and proper application of guideline terminology.
8.Consideration and Suggestions on Dosage Labeling Issues in Chinese Patent Medicines Instructions
Juan XU ; Gaiping WANG ; Yu ZHANG ; Lingjun DONG ; Junfei WANG ; Hongfeng LIU ; Weihong CHEN
Herald of Medicine 2025;44(5):720-726
Objective To explore a standardized approach for indicating dosages in Chinese patent medicines(CPM)instructions.Methods A review of 1 378 classic formulas of traditional Chinese medicine in the 2020 edition of the Pharmaco-poeia of the People's Republic of China(Chinese Pharmacopoeia)was conducted,focusing on three aspects:overdose,different dosage forms,and inclusion of toxic herbs.Approximately 50 representative formulas were selected,and their daily dosage of herbal pieces and the corresponding dosage of individual herbs were calculated.These results were then compared and analyzed against the dosages stipulated in the Chinese Pharmacopoeia.Results ①Overdose:Among the 1 378 reviewed formulas,146(10.60%)were found to involve overdose.Specifically,eight formulas were identified as having an overdose of approximately 3 to 5 times the recommended dose,including Duanxueliu tablets and Zhixue Fumai mixture.②Dosage variations across dosage forms:Based on the conversion of the Ming-Qing dynasty dosage of one liang(Chinese traditional weight unit)to 36 g,the estimated dai-ly dose per component of crude herbs in Yinqiao powder was close to the upper limit specified in the Chinese Pharmacopoeia.The total daily dose of crude herbs(75.60 g)was approximately five times that of the Yinqiao powder(15 g)listed in the Chinese Pharmacopoeia and three times that of the Japanese Kampo Yinqiao powder(23.868 g).Significant differences in dosage were ob-served among Yinqiao Jiedu preparations of different dosage forms.In terms of total daily dose of crude herbs,granules(52.50 g)had the highest dose,approximately 3-5 times that of tablets/capsules(11.20 g),soft capsules(13.44 g),and powders(15.00 g),but still 30% lower than the original prescription from ancient texts(75.6 g).Comparing the daily dose per compo-nent,granules fell within the Chinese Pharmacopoeia dose range,while tablets,capsules,soft capsules,and powders were all below the Chinese Pharmacopoeia dose.③Inclusion of toxic herbs:Among the 20 oral formulations containing Strychnos nux-vomica(Maqianzi)listed in the Chinese Pharmacopoeia,seven species exceeded the pharmacopoeial dose of 0.3-0.6 g per day.Notably,Shenjin Huoluo pill and Shufeng Dingtong pill exceeded the Chinese Pharmacopoeia dose by 1.5-2 times.The daily dose of strych-nosine in Shenjin Huoluo pill was 21.3 mg,exceeding the toxic dose range of 5-10 mg.Conclusions The dosage indications in CPM instructions must adhere to a unified format,clearly stating the daily dose per component of crude herbs,the total daily dose of crude herbs,and the total number of administrations under the"Dosage and Administration"section.For instance,"Yinqiao Jiedu granules,with a total daily dose equivalent to 60 g of crude herbs taken in four doses(including:Flos Lonicerae 10.71 g,Fructus Forsythiae 10.71 g,Radix Platycodi 6.43 g,Herba Menthae Haplocalycis 6.43 g,Fructus Arctii 6.43 g,Semen Sojae Preparatum 5.36 g,Radix Glycyrrhizae 5.36 g,Herba Lophatheri 4.29 g,Herba Schizonepetae 4.29 g)."For CPM containing tox-ic herbs,dosage indications are even more crucial,such as specifying the daily dose of Maqianzi powder/processed Maqianzi and strychnosine in formulations containing this herb.
9.Production Research and Risk Factor Analysis of Transfusion and Infusion Warmer Based on Real-World Data.
Hongfeng BI ; Yonggang WANG ; Zhendong WANG ; Yuan FU ; Huifang NIU
Chinese Journal of Medical Instrumentation 2025;49(4):466-472
OBJECTIVE:
To investigate the transfusion and infusion warmer manufacturers, combine the use failures to analyze adverse events, and provide support for enterprise risk management and clinical safe use.
METHODS:
The sentinels from 7 manufacturing enterprises and 11 medical institutions that participated in Shandong Province's key monitoring program during the "14th Five-Year Plan" period were targeted. This was done by understanding the equipment's principles, structures, and quality control. Additionally, real-world data from January 2019 to December 2023 were collected to count adverse events.
RESULTS:
During production, there are risks in switching power supply stability and solder joint firmness. Fifteen kinds of faults occurred during use, and common faults such as inability to heat, unable to turn on the machine, and bubbles in the infusion tube accounted for more than 80%.
CONCLUSION
There are many risk points and failures for transfusion and infusion warmers, so enterprises should improve processes and quality control to address risks, and medical institutions should formulate specifications and maintenance plans to provide targeted theoretical basis for supervision.
Blood Transfusion/instrumentation*
;
Risk Factors
;
Quality Control
;
Humans
;
Risk Management
;
Equipment Failure
10.Tumor-intrinsic PRMT5 upregulates FGL1 via methylating TCF12 to inhibit CD8+ T-cell-mediated antitumor immunity in liver cancer.
Jiao SUN ; Hongfeng YUAN ; Linlin SUN ; Lina ZHAO ; Yufei WANG ; Chunyu HOU ; Huihui ZHANG ; Pan LV ; Guang YANG ; Ningning ZHANG ; Wei LU ; Xiaodong ZHANG
Acta Pharmaceutica Sinica B 2025;15(1):188-204
Protein arginine methyltransferase 5 (PRMT5) acts as an oncogene in liver cancer, yet its roles and in-depth molecular mechanisms within the liver cancer immune microenvironment remain mostly undefined. Here, we demonstrated that disruption of tumor-intrinsic PRMT5 enhances CD8+ T-cell-mediated antitumor immunity both in vivo and in vitro. Further experiments verified that this effect is achieved through downregulation of the inhibitory immune checkpoint molecule, fibrinogen-like protein 1 (FGL1). Mechanistically, PRMT5 catalyzed symmetric dimethylation of transcription factor 12 (TCF12) at arginine 554 (R554), prompting the binding of TCF12 to FGL1 promoter region, which transcriptionally activated FGL1 in tumor cells. Methylation deficiency at TCF12-R554 residue downregulated FGL1 expression, which promoted CD8+ T-cell-mediated antitumor immunity. Notably, combining the PRMT5 methyltransferase inhibitor GSK591 with PD-L1 blockade efficiently inhibited liver cancer growth and improved overall survival in mice. Collectively, our findings reveal the immunosuppressive role and mechanism of PRMT5 in liver cancer and highlight that targeting PRMT5 could boost checkpoint immunotherapy efficacy.

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