OBJECTIVE: To propose a machine learning-based method for predicting the trajectories during manual acupuncture manipulation (MAM), aiming to improve the precision and consistency of acupuncture practitioner' operation and provide the real-time suggestions on MAM error correction. METHODS: Computer vision technology was used to analyze the hand micromotion when holding needle during acupuncture, and provide a three-dimensional coordinate description method of the index finger joints of the holding hand. Focusing on the 4 typical motions of MAM, a machine learning-based MAM trajectory predictive model was designed. By integrating the changes of phalangeal joint angle and hand skeletal information of acupuncture practitioner, the motion trajectory of the index finger joint was predicted accurately. Besides, the roles of machine learning-based MAM trajectory predictive model in the skill transmission of acupuncture manipulation were verified by stratified randomized controlled trial. RESULTS: The performance of MAM trajectory predictive model, based on the long short-term memory network (LSTM), obtained the highest stability and precision, up to 98%. The learning effect was improved when the model applied to the skill transmission of acupuncture manipulation. CONCLUSION The machine learning-based MAM predictive model provides acupuncture practitioner with precise action prediction and feedback. It is valuable and significant for the inheritance and error correction of manual operation of acupuncture.
Humans ; Acupuncture Therapy/instrumentation* ; Machine Learning ; Adult ; Male ; Female

OBJECTIVE: To investigate the effect of manual acupuncture manipulations (MAMs) on subcutaneous muscle tissue, by developing quantitative models of "lifting and thrusting" and "twisting and rotating", based on machine learning techniques. METHODS: A depth camera was used to capture the acupuncture operator's hand movements during "lifting and thrusting" and "twisting and rotating" of needle. Simultaneously, the ultrasound imaging was employed to record the muscle tissue responses of the participants. Amplitude and angular features were extracted from the movement data of operators, and muscle fascicle slope features were derived from the data of ultrasound images. The dynamic time warping barycenter averaging algorithm was adopted to align the dual-source data. Various machine learning techniques were applied to build quantitative models, and the performance of each model was compared. The most optimal model was further analyzed for its interpretability. RESULTS: Among the quantitative models built for the two types of MAMs, the random forest model demonstrated the best performance. For the quantitative model of the "lifting and thrusting" technique, the coefficient of determination (R²) was 0.825. For the "twisting and rotating" technique, R² reached 0.872. CONCLUSION Machine learning can be used to effectively develop the models and quantify the effects of MAMs on subcutaneous muscle tissue. It provides a new perspective to understand the mechanism of acupuncture therapy and lays a foundation for optimizing acupuncture technology and designing personalized treatment regimen in the future.
Humans ; Acupuncture Therapy/methods* ; Machine Learning ; Male ; Adult ; Female ; Subcutaneous Tissue/diagnostic imaging* ; Young Adult

Retrieving keyframes most relevant to text from small intestine videos with given labels can efficiently and accurately locate pathological regions. However, training directly on raw video data is extremely slow, while learning visual representations from image-text datasets leads to computational inconsistency. To tackle this challenge, a small bowel video keyframe retrieval based on multi-modal contrastive learning (KRCL) is proposed. This framework fully utilizes textual information from video category labels to learn video features closely related to text, while modeling temporal information within a pretrained image-text model. It transfers knowledge learned from image-text multimodal models to the video domain, enabling interaction among medical videos, images, and text data. Experimental results on the hyper-spectral and Kvasir dataset for gastrointestinal disease detection (Hyper-Kvasir) and the Microsoft Research video-to-text (MSR-VTT) retrieval dataset demonstrate the effectiveness and robustness of KRCL, with the proposed method achieving state-of-the-art performance across nearly all evaluation metrics.
Humans ; Video Recording ; Intestine, Small/diagnostic imaging* ; Machine Learning ; Image Processing, Computer-Assisted/methods* ; Algorithms

The prefrontal cortex (PFC) plays a pivotal role in orchestrating higher-order emotional and cognitive processes, a function that depends on the precise modulation of synaptic activity. Although pharmacological studies have demonstrated that dopamine signaling through dopamine D1 receptor (DRD1) in the PFC is essential for these functions, the cell-type-specific and molecular mechanisms underlying the neuromodulatory effects remain elusive. Using cell-type-specific knockout mice and patch-clamp recordings, we investigated the regulatory role of DRD1 on neurons and astrocytes in synaptic transmission and plasticity. Furthermore, we explored the mechanisms by which DRD1 on astrocytes regulate synaptic transmission and plasticity at the cellular level, as well as emotional and cognitive functions at the behavioral level, through two-photon imaging, microdialysis, high-performance liquid chromatography, transcriptome sequencing, and behavioral testing. We found that conditional knockout of the Drd1 in astrocytes (CKO^AST) increased glutamatergic synaptic transmission and long-term potentiation (LTP) in the medial prefrontal cortex (mPFC), whereas Drd1 deletion in pyramidal neurons did not affect synaptic transmission. The elevated level of d-serine in the mPFC of CKO^AST mice increased glutamatergic transmission and LTP through NMDA receptors. In addition, CKO^AST mice exhibited abnormal emotional and cognitive function. Notably, these behavioral changes in CKO^AST mice could be reversed through the administration of d-serine degrease to the mPFC. These results highlight the critical role of the astrocytic DRD1 in modulating mPFC synaptic transmission and plasticity, as well as higher brain functions through d-serine, and may shed light on the treatment of mental disorders.

Objective To compare the short-term efficacy and safety of transanal natural orifice specimen extraction surgery(Ta-NOSES)and conventional laparoscopic surgery in left-sided colon cancer.Methods A retrospective analysis was conducted on the clinical data of 35 patients with left-sided colon cancer admitted to the anorectal department of the hospital from January 2018 to December 2019.According to the different surgical methods,the patients were divided into experimental group(15 cases)and control group(20 cases).The observation group underwent Ta-NOSES,and the control group underwent conventional laparoscopic surgery.The perioperative related indicators,postoperative complications,postoperative pain scores,postoperative defecation control,short-term postoperative quality of life scores and 5-year postoperative follow-up of the two groups of patients were compared.Results There was no statistically significant difference in the intraoperative blood loss,stoma status and the number of lymph node dissections between the two groups of patients(P>0.05).Moreover,no permanent stoma occurred in either group of patients.The operation time of the experimental group was longer than that of the control group,the first time to get out of bed and move around,the time of the first anal exhaust,the time of the first diet intake and the hospital stay were shorter than those of the control group,the hospitalization cost was significantly lower than that of the control group,the differences were statistically significant(P<0.05).On 1 and 3 days after operation,the VAS scores of the experimental group were significantly lower than those of the control group.At 3 days after operation,the VAS scores of the two groups were significantly lower than those at 1 day after operation,and the differences were statistically significant(P<0.05).There was a statistically significant difference in postoperative Kirwan anal function grading between two groups of patients(P<0.05),with the experimental group having a better grading(higher proportion of grade Ⅰ),the control group had poor grading(with a higher proportion of grades Ⅱ,Ⅲ,and Ⅳ).There was no statistically significant difference in postoperative complications between the two groups of patients(P>0.05).The scores of each item on the Short Form-36(SF-36)in the experimental group were higher than those in the control group at 10 and 20 days after surgery(P<0.05).There was no statistically significant difference in the scores of each item on the SF-36 between the two groups at 30 days after surgery(P>0.05).The distant recurrence rate after surgery in the experimental group was 26.7％,compared with 25.0％in the control group,the difference was not statistically significant(P>0.05).There were no tumor recurrence cases with the original incision site,rectal and intestinal cavity,pelvic cavity and other specimen removal routes in both groups.The 5-year survival rate of the experimental group was 73.3％,which was not statistically significantly different from that of the control group(70.0％)(P>0.05).Conclusion Ta-NOSES in the treatment of left-sided colon cancer can alleviate postoperative pain compared with conventional laparoscopic surgery,promote the recovery of postoperative gastrointestinal function,improve the utilization rate of medical resources,reduce the economic burden of patients,improve the short-term quality of life after surgery,and does not increase the risks of postoperative complications and tumor metastasis and recurrence.It is worthy of clinical promotion and application.

Objective To evaluate the safety and efficacy of simultaneous surgical resection combined with thermal ablation in sequential treatment of patients with multiple primary lung cancer (MPLC). Methods Patients with MPLC who underwent simultaneous, sequential surgical resection combined with thermal ablation at Shangjin Branch of West China Hospital of Sichuan University from April 2023 to May 2024 were retrospectively included, and their perioperative and follow-up data were analyzed. Results A total of 23 patients with MPLC were enrolled, including 4 males and 19 females, with a mean age of (51.61±12.38) years. Cumulatively, 48 lesions were resected and 23 lesions were ablated. About half of the patients (52.17%) had surgery and ablation treatment located in the same lung. All patients completed the combined treatment without intraoperative complications. Four patients had postoperative complications, and were effectively managed and successfully discharged. The median postoperative hospital stay was 4.00 (4.00, 4.00) days. The average follow-up duration was (11.78±4.90) months, with a local control rate of 100.00% at 6 months postoperatively. No deaths or tumor occurred during the follow-up. Conclusion Simultaneous surgery with thermal ablation in sequential treatment for MPLC is safe, flexible and effective, providing a new option for this group of patients, but further studies are needed to evaluate its long-term efficacy.

Objective To compare the short-term efficacy and safety of transanal natural orifice specimen extraction surgery(Ta-NOSES)and conventional laparoscopic surgery in left-sided colon cancer.Methods A retrospective analysis was conducted on the clinical data of 35 patients with left-sided colon cancer admitted to the anorectal department of the hospital from January 2018 to December 2019.According to the different surgical methods,the patients were divided into experimental group(15 cases)and control group(20 cases).The observation group underwent Ta-NOSES,and the control group underwent conventional laparoscopic surgery.The perioperative related indicators,postoperative complications,postoperative pain scores,postoperative defecation control,short-term postoperative quality of life scores and 5-year postoperative follow-up of the two groups of patients were compared.Results There was no statistically significant difference in the intraoperative blood loss,stoma status and the number of lymph node dissections between the two groups of patients(P>0.05).Moreover,no permanent stoma occurred in either group of patients.The operation time of the experimental group was longer than that of the control group,the first time to get out of bed and move around,the time of the first anal exhaust,the time of the first diet intake and the hospital stay were shorter than those of the control group,the hospitalization cost was significantly lower than that of the control group,the differences were statistically significant(P<0.05).On 1 and 3 days after operation,the VAS scores of the experimental group were significantly lower than those of the control group.At 3 days after operation,the VAS scores of the two groups were significantly lower than those at 1 day after operation,and the differences were statistically significant(P<0.05).There was a statistically significant difference in postoperative Kirwan anal function grading between two groups of patients(P<0.05),with the experimental group having a better grading(higher proportion of grade Ⅰ),the control group had poor grading(with a higher proportion of grades Ⅱ,Ⅲ,and Ⅳ).There was no statistically significant difference in postoperative complications between the two groups of patients(P>0.05).The scores of each item on the Short Form-36(SF-36)in the experimental group were higher than those in the control group at 10 and 20 days after surgery(P<0.05).There was no statistically significant difference in the scores of each item on the SF-36 between the two groups at 30 days after surgery(P>0.05).The distant recurrence rate after surgery in the experimental group was 26.7％,compared with 25.0％in the control group,the difference was not statistically significant(P>0.05).There were no tumor recurrence cases with the original incision site,rectal and intestinal cavity,pelvic cavity and other specimen removal routes in both groups.The 5-year survival rate of the experimental group was 73.3％,which was not statistically significantly different from that of the control group(70.0％)(P>0.05).Conclusion Ta-NOSES in the treatment of left-sided colon cancer can alleviate postoperative pain compared with conventional laparoscopic surgery,promote the recovery of postoperative gastrointestinal function,improve the utilization rate of medical resources,reduce the economic burden of patients,improve the short-term quality of life after surgery,and does not increase the risks of postoperative complications and tumor metastasis and recurrence.It is worthy of clinical promotion and application.

Objective:To investigate the current status of malnutrition and its influential factors among patients with stroke and dysphagia, and to develop and validate a malnutrition risk prediction model.Methods:Using a convenience sampling method, 150 patients with stroke and dysphagia admitted to Wenzhou Central Hospital from January 2019 to December 2023 were included in this study. Through a review of the literature and expert consultations, 15 influential factors were identified: age, gender, body mass index (BMI), history of smoking alcohol consumption , number of hospitalizations, education level, Barthel index, history of hypertension, history of diabetes, coronary heart disease, presence of limb disabilities, hemoglobin levels, Glasgow Coma Scale (GCS) score, and National Institutes of Health Stroke Scale score. Patients were categorized into malnutrition and normal groups based on the occurrence of malnutrition. The influential factors for malnutrition were analyzed, and a malnutrition risk prediction model was constructed using regression analysis. The model was presented using a nomogram and subsequently validated.Results:Among the 150 patients with stroke and dysphagia, the average age was (59.34 ± 6.46) years, with 83 females and 67 males. Of these patients, 66 (44.00%) were found to be malnourished. The following factors were identified as independent risk factors for malnutrition in patients with stroke and dysphagia: age (χ2 = 4.03, P = 0.045), BMI ( t = 6.33, P < 0.001), alcohol consumption (χ2 = 3.90, P = 0.048), number of hospitalizations (χ2 = 9.45, P = 0.024), Barthel index (χ2 = 7.78, P = 0.020), presence of limb disabilities (χ2 = 4.64, P = 0.031), hemoglobin levels (χ2 = 4.38, P = 0.036), and GCS score (χ2 = 9.83, P = 0.007) (all P < 0.05). Patients who were older, had a BMI < 18.5 kg/m2, consumed alcohol, had more than five hospitalizations, a Barthel index < 40, limb disabilities, abnormal hemoglobin levels, or a GCS score ≤ 11 were more likely to experience malnutrition (all P < 0.05). The C-index for predicting malnutrition was 0.851, with a 95% CI of (0.809, 0.892). The maximum Youden index was 0.562, with a sensitivity of 84.1% and specificity of 72.1%. Conclusion:The risk factors for malnutrition in patients with stroke and dysphagia include advanced age, alcohol consumption, more than five hospitalizations, limb disabilities, and abnormal hemoglobin levels. Protective factors against malnutrition in these patients are a BMI > 23.9 kg/m2, a Barthel index > 60, and a GCS score ≥ 14. The prediction model demonstrates a significant predictive value for the occurrence of malnutrition in patients with stroke and dysphagia.

Objective To analyze risk factors for pulmonary vein obstruction (PVO) after intracardiac total anomalous pulmonary venous connection (TAPVC) repair. Methods A retrospective analysis of clinical data of the patients with intracardiac TAPVC who underwent surgery at our center from April 2009 to April 2019 was conducted. Kaplan-Meier curves were used to assess the risk of postoperative PVO. Logistic regression analysis was used to identify relevant risk factor for postoperative PVO. Results We finally included 169 patients. The median age at surgery was 89.0 (41.5, 195.0) days, and the median weight at surgery was 4.8 (3.8, 6.0) kg. The preoperative PVO rate was 18.3% (31/169). Post-repair PVO occurred in 8.9% (15/169) of the patients. The atresia of common pulmonary and subtype of coronary sinus/right atrium did not significantly affect the risk of PVO (P=0.053, P=0.330). Relevant risk factors included preoperative PVO (P<0.001) and the ratio of left ventricular end-systolic diameter to right ventricular diameter (P=0.025). Conclusion Surgical repair of intracardiac TAPVC has achieved satisfactory results in our center, but the long-term risk of obstruction should not be underestimated. An increased ratio of left ventricular end-systolic diameter to right ventricular diameter and preoperative PVO are associated with post-repair PVO.

Objective:To evaluate the clinical survival rates and influence factors of different types of resin-bonded fixed partial dentures (RBFPD) used in anterior missing teeth restoration.Methods:Ninety-three RBFPD were delivered to 92 patients [92 patients,43 males and 49 females, average age (46.1±12.8) years] who visited Peking University School and Hospital of Stomatology from January 2006 to December 2021 for restoration of 1 or 2 anterior missing teeth. Altogether 32 cases of glass fiber reinforced RBFPD, 39 cases of glass-based ceramic RBFPD and 22 cases of porcelain-fused-to-metal RBFPD were retrospectively analyzed. The complete survival rate, functional survival rate, patients′ satisfaction and color matching of the restorations were recorded and evaluated every year since the replacement with RBFPD. The Kaplan-Meier survival curve method was used for survival analysis, and the Log-rank analysis was used to compare the effect of the number of missing teeth, position (maxillary or mandibular), cantilever or non-cantilever and gender on the survival rate of the restorations.Results:The overall survival time for the 93 RBFPD was 13.7 years (95% CI: 12.3-15.1 years). There was a decreasing trend in complete survival and functional survival for all three material RBFPD from year to year, but complete and functional survival rates exceeded 90% at year 5 and exceeded 80% at year 10. The complete survival rate of the glass-ceramic RBFPD was higher than the other two during the follow-up period, with a complete survival rate of 90% (35/39) at year 15. The porcelain-fused-to-metal RBFPD had a higher functional survival rate in years 1-8, but the complete and functional survival rates showed a substantial decrease after year 9. The single-factor Log-rank analysis showed that the success rate of porcelain-fused-to-metal RBFPD was significantly higher than that of glass fiber reinforced RBFPD (χ2=7.33, P=0.007), and the success rate of RBFPD with 1 missing tooth restored was significantly higher than that of RBFPD with 2 missing teeth restored (χ2=3.23, P=0.072). The differences in success rates between different restoration positions (maxillary and mandibular), cantilever or non-cantilever, and gender factors were not statistically significant (χ2=2.26, P=0.133; χ2=0.68, P=0.411; χ2=1.07, P=0.300). Conclusions:For the restoration of individual missing anterior teeth, both porcelain-fused-to-metal RBFPD and glass-based ceramic RBFPD achieve a high long-term clinical success rate, with glass-based ceramic RBFPD being more able to ensure long-term restorative result.