Objective:To observe the effects of repetitive transcranial magnetic stimulation (rTMS) at different frequencies on learning and memory abilities in rats during the early recovery phase of middle cerebral artery occlusion (MCAO) and to explore the underlying mechanisms.Method:Successfully modelled MCAO rats were randomly divided into the model group,low-frequency group,high-frequency group,and sham-operated group was set up at the same time,with 12 rats in each group. The low-frequency group and high-frequency group were stimulated with a CCY-I transcranial magnetic stimulator 2 times/day for 14d;the low-frequency group was treated with 1Hz at the left prefrontal lobe of the rat's skull,and the high-frequency group was treated with 10Hz at the right prefrontal lobe. The model group and the sham-operated group were not treated but were subjected to the same conditions of handling and re-straint before returning to their cages. Neurobehavioral scores were recorded on the 1st and 14th day after the operation;the Morris water maze test was conducted on day 3—7 after the operation;TTC staining,PCR and Western blot to detect the mRNA and protein expression of key genes (Notch1,Hes1,Hes5) were performed at the end of the intervention on the 14th postoperative day. Result:①Neurological deficit scores:After 14 days of intervention,both the high-frequency and low-frequency groups showed a reduction in neurofunctional compared to the model group (P<0.05),with no significant dif-ference between the model group and high-frequency group (P>0.05). ②Morris water maze experiment:The av-erage escape latency during the directional navigation experiment was significantly reduced day by day in the low frequency group,high frequency group and sham operation group (P<0.05). The escape latency was short-er in the high-frequency group compared to the model group,and shorter in the low-frequency group com-pared to the high-frequency group (P<0.05). The number of platform crossings in the spatial exploration experi-ment showed no significant difference between low frequency group and sham operation group,high frequency group and model group (P>0.05). The high-frequency group and the model group had fewer crossing than the sham operation group,and the low-frequency group had more than the model group and high-frequency group (P<0.05). ③TTC staining:The infarct size in the low-frequency group and high-frequency group was signifi-cantly smaller than in the model group. ④PCR and Western blot:Compared to the model group,the high fre-quency group and the low frequency group had significantly increased mRNA and protein expression of Notch1,Hes1 and Hes5 (P<0.05). There was no significant difference in the mRNA and protein expression of Notch1,Hes1 and Hes5 between the low frequency group and high frequency group (P>0.05).Conclusion:Both high and low frequency rTMS can improve the learning and memory abilities in MCAO rats,potentially by activating and increasing the expression of the Notch1 pathway in hippocampal tissues,which improves the synaptic plasticity of hippocampus.

Objective To train an automatic recognition and classification model of ulcerative colitis colonoscopy image based on ResNet,and to test its accuracy,in order to help doctors improve the clinical detection rate and classification accuracy of ulcerative colitis.Methods A total of 4000 colonoscopy images were retrospectively collected from the Colonoscopy Center of Hebei Hospital of Traditional Chinese Medicine from January 2018 to October 2023,and were divided into normal group,mild group,moderate group and severe group according to Mayo endoscopic scoring criteria,with 1000 images for each group.After pre-processing such as brightness adjustment and Angle rotation,the number of images was expanded to 20,000,and the data set was randomly divided into training set,verification set and test set according to the ratio of 7∶2∶1.The training set and verification set are input into the ResNet model to learn and test its stability.After all training is completed,the accuracy of the model is recorded through the test set,and the accurate regression curve is made to evaluate the classification effect of the model.Results In the test set,the accuracy of classification of ulcerative colitis was 99.8％in normal group,98.8％in mild group,95.6％in moderate group and 97.8％in severe group.Conclusion ResNet has good performance in image recognition and classification of ulcerative colitis,can improve the clinical accuracy of ulcerative colitis,and can assist doctors to identify and classify the disease,which has a more reliable clinical application value.

Objective:To evaluate the feasibility of pelvic floor muscle reconstruction for women with vaginal laxity accompanied by stress urinary incontinence (SUI).Methods:A prospective cohort clinical study was conducted to collect clinical data from patients with vaginal laxity and SUI admitted to the Urogenital Reconstructive and Gender-affirming Department at the Plastic Surgery Hospital, Chinese Academy of Medical Sciences, and the Department of Urology, Third Medical Center, Chinese PLA General Hospital, from January 2019 to September 2022. Patients underwent surgical treatment for pelvic floor muscle reconstruction. The cough provocation test and the patient global impression of improvement (PGI-I) scale were utilized as objective and subjective indicators of treatment effecacy, respectively. The urinary incontinence quality of life scale (I-QOL) and the pelvic organ prolapse and urinary incontinence sexual function questionnaire 12(PISQ-12) were used to evaluate the changes in quality of life and sexual funtion. The changes in pelvic floor anatomical structure were evaluated by pelvic floor ultrasound. Data analysis was performed using SPSS version 23.0. The I-QOL and PISQ-12 scores, posterior vesicourethral angle, urethral rotation angle, and bladder neck motion before and after surgery were analyzed using paired t-test, with P<0.05 was considered statistically significant. Results:A total of 36 female patients were included, with an average age of 41.7 years (ranged 24-51 years) and an average body mass index of 23.8 kg/m 2. The average operation time was 76.2 minutes, and the average blood loss was 84.5 milliliters. After 12-27 months of postoperative follow-up, the objective and subjective cure rates were 86.1% (31/36) and 88.9% (32/36), respectively. The sexual function and quality of life of the patients were significantly improved compared with the preoperative results, and postoperative pelvic floor ultrasound results showed significant improvement. The I-QOL and PISQ-12 scores 12 months after surgery were statistically significant compared with those before surgery ( P<0.01). Postoperative pelvic floor ultrasonography revealed statistically significant differences in posterior vesicourethral angle, urethral rotation angle, and bladder neck motion during maximum Valsalva maneuver compared to preoperative data ( P<0.01). Conclusion:Pelvic floor muscle reconstruction is a safe and effective surgical method for patients with vaginal laxity combined with SUI. This procedure can significantly improve sexual quality of life and alleviates SUI symptoms, restores anatomical structure in the female pelvic floor, and enhances overall quality of life.

Objective To train an automatic recognition and classification model of ulcerative colitis colonoscopy image based on ResNet,and to test its accuracy,in order to help doctors improve the clinical detection rate and classification accuracy of ulcerative colitis.Methods A total of 4000 colonoscopy images were retrospectively collected from the Colonoscopy Center of Hebei Hospital of Traditional Chinese Medicine from January 2018 to October 2023,and were divided into normal group,mild group,moderate group and severe group according to Mayo endoscopic scoring criteria,with 1000 images for each group.After pre-processing such as brightness adjustment and Angle rotation,the number of images was expanded to 20,000,and the data set was randomly divided into training set,verification set and test set according to the ratio of 7∶2∶1.The training set and verification set are input into the ResNet model to learn and test its stability.After all training is completed,the accuracy of the model is recorded through the test set,and the accurate regression curve is made to evaluate the classification effect of the model.Results In the test set,the accuracy of classification of ulcerative colitis was 99.8％in normal group,98.8％in mild group,95.6％in moderate group and 97.8％in severe group.Conclusion ResNet has good performance in image recognition and classification of ulcerative colitis,can improve the clinical accuracy of ulcerative colitis,and can assist doctors to identify and classify the disease,which has a more reliable clinical application value.

Objective:To evaluate the feasibility of pelvic floor muscle reconstruction for women with vaginal laxity accompanied by stress urinary incontinence (SUI).Methods:A prospective cohort clinical study was conducted to collect clinical data from patients with vaginal laxity and SUI admitted to the Urogenital Reconstructive and Gender-affirming Department at the Plastic Surgery Hospital, Chinese Academy of Medical Sciences, and the Department of Urology, Third Medical Center, Chinese PLA General Hospital, from January 2019 to September 2022. Patients underwent surgical treatment for pelvic floor muscle reconstruction. The cough provocation test and the patient global impression of improvement (PGI-I) scale were utilized as objective and subjective indicators of treatment effecacy, respectively. The urinary incontinence quality of life scale (I-QOL) and the pelvic organ prolapse and urinary incontinence sexual function questionnaire 12(PISQ-12) were used to evaluate the changes in quality of life and sexual funtion. The changes in pelvic floor anatomical structure were evaluated by pelvic floor ultrasound. Data analysis was performed using SPSS version 23.0. The I-QOL and PISQ-12 scores, posterior vesicourethral angle, urethral rotation angle, and bladder neck motion before and after surgery were analyzed using paired t-test, with P<0.05 was considered statistically significant. Results:A total of 36 female patients were included, with an average age of 41.7 years (ranged 24-51 years) and an average body mass index of 23.8 kg/m 2. The average operation time was 76.2 minutes, and the average blood loss was 84.5 milliliters. After 12-27 months of postoperative follow-up, the objective and subjective cure rates were 86.1% (31/36) and 88.9% (32/36), respectively. The sexual function and quality of life of the patients were significantly improved compared with the preoperative results, and postoperative pelvic floor ultrasound results showed significant improvement. The I-QOL and PISQ-12 scores 12 months after surgery were statistically significant compared with those before surgery ( P<0.01). Postoperative pelvic floor ultrasonography revealed statistically significant differences in posterior vesicourethral angle, urethral rotation angle, and bladder neck motion during maximum Valsalva maneuver compared to preoperative data ( P<0.01). Conclusion:Pelvic floor muscle reconstruction is a safe and effective surgical method for patients with vaginal laxity combined with SUI. This procedure can significantly improve sexual quality of life and alleviates SUI symptoms, restores anatomical structure in the female pelvic floor, and enhances overall quality of life.

Objective:To observe the effects of repetitive transcranial magnetic stimulation (rTMS) at different frequencies on learning and memory abilities in rats during the early recovery phase of middle cerebral artery occlusion (MCAO) and to explore the underlying mechanisms.Method:Successfully modelled MCAO rats were randomly divided into the model group,low-frequency group,high-frequency group,and sham-operated group was set up at the same time,with 12 rats in each group. The low-frequency group and high-frequency group were stimulated with a CCY-I transcranial magnetic stimulator 2 times/day for 14d;the low-frequency group was treated with 1Hz at the left prefrontal lobe of the rat's skull,and the high-frequency group was treated with 10Hz at the right prefrontal lobe. The model group and the sham-operated group were not treated but were subjected to the same conditions of handling and re-straint before returning to their cages. Neurobehavioral scores were recorded on the 1st and 14th day after the operation;the Morris water maze test was conducted on day 3—7 after the operation;TTC staining,PCR and Western blot to detect the mRNA and protein expression of key genes (Notch1,Hes1,Hes5) were performed at the end of the intervention on the 14th postoperative day. Result:①Neurological deficit scores:After 14 days of intervention,both the high-frequency and low-frequency groups showed a reduction in neurofunctional compared to the model group (P<0.05),with no significant dif-ference between the model group and high-frequency group (P>0.05). ②Morris water maze experiment:The av-erage escape latency during the directional navigation experiment was significantly reduced day by day in the low frequency group,high frequency group and sham operation group (P<0.05). The escape latency was short-er in the high-frequency group compared to the model group,and shorter in the low-frequency group com-pared to the high-frequency group (P<0.05). The number of platform crossings in the spatial exploration experi-ment showed no significant difference between low frequency group and sham operation group,high frequency group and model group (P>0.05). The high-frequency group and the model group had fewer crossing than the sham operation group,and the low-frequency group had more than the model group and high-frequency group (P<0.05). ③TTC staining:The infarct size in the low-frequency group and high-frequency group was signifi-cantly smaller than in the model group. ④PCR and Western blot:Compared to the model group,the high fre-quency group and the low frequency group had significantly increased mRNA and protein expression of Notch1,Hes1 and Hes5 (P<0.05). There was no significant difference in the mRNA and protein expression of Notch1,Hes1 and Hes5 between the low frequency group and high frequency group (P>0.05).Conclusion:Both high and low frequency rTMS can improve the learning and memory abilities in MCAO rats,potentially by activating and increasing the expression of the Notch1 pathway in hippocampal tissues,which improves the synaptic plasticity of hippocampus.

Objective:To search for valuable laboratory indexes of early diagnosis of anastomotic leakage after anterior resection for rectal carcinoma.Methods:From Sep 2017 to Jan 2019, 128 patients with colorectal cancer underwent anterior rectal resection at the Department of Colorectal & Anal Surgery, the 940 Hospital of the Joint Logistics Support Force.Results:Anastomotic leakage occurred in 16 of 128 patients (12.5%). Definite diagnosis of anastomotic leakage was made on between 2nd and 9th day, postopera tively averagign (6.13±2.00) days. Tumor location was a risk factor for anastomotic leakage with the incidence significantly lower when the distance from the lower edge of the tumor to the anal margin >7 cm than when the distance ≤7 cm ( χ 2=6.022, P=0.014). The percentage of increase in peripheral blood leukocytes, neutrophils, serum interleukin-6, C-reactive protein and procalcitonin in patients 3-5 days after surgery significantly related to the occurrence of anastomotic leakage (all P<0.05). The area under the working characteristic curve of the subjects with the percentage of C-reactive protein, procalcitonin, interleukin-6, leukocytes and neutrophils from the 3rd to the 5th day after operation was greater than 0.5. Conclusion:C-reactive protein, procalcitonin, interleukin-6, leukocyte and neutrophil percentage are risk factors predicting anastomotic leakage after anterior resection of rectal cancer.

Objective:To investigate the relationship between cognitive function and brain event-related potential in patients with lacunar cerebral infarction.Methods:A total of 464 patients with lacunar cerebral infarction admitted to the Department of Neurology, Kailuan General Hospital from 2014 to 2019 were prospectively selected as observation subjects (case group). According to mini-mental state examination (MMSE) score, the patients in the case group were divided into 352 cases of lacunar cerebral infarction with normal cognition and 112 cases of mild cognitive impairment. At the same time, 100 healthy volunteers were selected as the control group. All subjects were assessed by simple intelligent mental state, Zung self-rating anxiety scale, Zung self-rating depression scale and brain event-related potential P3a and P3b. The measurement data of normal distribution adopts one-way ANOVA, the measurement data of non normal distribution adopts Kruskal Wallis H test, and the counting data adopts χ2. Multivariate statistical analysis was performed by unconditional Logistics (stepwise method). Results:The proportions of smokers in control group, lacunar cerebral infarction cognitive normal group and lacunar cerebral infarction mild cognitive impairment group were 20.00% (20/100), 38.07% (134/352) and 46.42% (52/112), respectively. The proportions of drinkers were 18.00% (18/100), 33.24% (117/352), 33.93% (38/112), respectively. The proportions of hypertension were 38.00% (38/100), 58.24% (205/352), 59.82% (67/112), respectively. The proportions of hyperhomocysteinemia were 19.00% (19/100), 34.00% (120/352) and 68.75% (77/112), respectively, and the differences among the three groups were statistically significant ( χ2 values were 15.66, 7.91, 11.86 and 54.57, respectively; P<0.001, 0.019, 0.003, <0.001). The peak latency CZ leads of visual P3b wave group N2 were (271.48±40.65), (285.67±44.08) and (290.57±68.41) ms, respectively. PZ leads were (276.70±50.92), (287.86±43.28) and (312.16±62.75) ms. P3b peak latency FZ leads were (392.67±42.50), (405.82±52.43) and (410.34±64.27) ms. CZ leads were (395.04±42.44), (412.51±55.86) and (433.28±66.32) ms. PZ leads were (398.24±40.93), (411.17±49.48) and (435.78±67.69) ms. N2 amplitude CZ leads were (-3.99±2.81), (-3.60±3.00) and (-2.70±2.37) μV, PZ leads were (-3.18±2.69), (-2.91±2.62) and (-1.87±2.89) μV, respectively. Leads P3b amplitude of FZ were 5.27 (3.27, 7.40), 4.21 (2.31, 6.49) and 3.12 (1.61, 5.08) μV. CZ leads were 4.81 (2.78, 6.71), 4.15 (2.76, 6.16) and 3.51 (1.75, 5.15) μV. PZ leads were 5.17 (3.03, 6.97), 4.40 (2.89, 6.12) and 3.43 (1.52, 5.34) μV. There were statistically significant differences among the 3 groups ( F=3.29, 14.49, 3.95, 11.73, 14.06, 5.66 and 3.57, H=18.23, 10.33,18.25; P=0.027, <0.001, 0.025, <0.001, <0.001, 0.004, 0.042, <0.001, 0.006, <0.001). The peak latency FZ leads of visual P3a wave group N2 were 265.00 (256.00, 286.00), 277.00(260.00,300.00), 282.00(270.00,304.00) ms, respectively. CZ leads weres 274.00(255.00,305.00), 285.00(262.00,329.00), 293.50(270.00,346.00) ms. P3a peak latency FZ leads were (413.83±49.58), (429.83±55.38) and (449.04±54.79) ms, CZ leads were (441.53±61.78), (457.12±69.29) and (460.23±72.24) ms. PZ leads were (430.14±54.53), (462.31±69.2) and (470.02±74.92) ms. N2 amplitude FZ leads were (-6.34±3.13), (-5.72±2.96) and (-4.92±2.05) μV, respectively. Leads P3a amplitude of FZ were 4.00 (2.28, 5.55), 3.15 (2.14, 4.91) and 2.80 (2.19, 4.19) μV. CZ lead were 3.37 (1.98, 4.66), 2.73 (1.70, 3.97) and 2.41 (1.64, 3.45) μV. There were statistically significant differences among the three groups ( H=13.92, 8.65, 9.17, 10.02, F=8.18, 6.33, 10.73, 4.62, P =0.001,0.013,0.010,0.007, <0.001,0.002, <0.001,0.010). Logistic regression analysis showed that alcohol consumption, P3b peak latency and wave amplitude PZ lead, N1 wave amplitude of visual P3a group FZ lead were the influencing factors of MMSE ( OR=0.04, 1.01, 0.76, 1.51, 95% Cl were 0.00-0.30, 1.00-1.03, 0.59-0.97, 1.08-2.10, P=0.002,0.007,0.029,0.016). Conclusion:The peak latency and amplitude of endogenous psychological cognitive potentials N2, P3b and P3a of event-related potentials P3b and P3a in patients with lacunar cerebral infarction were prolonged and decreased. At the same time, with the occurrence of clinical cognitive impairment, the peak latency and amplitude of these cognitive potentials were further prolonged and decreased more significantly. Alcohol consumption, P3b peak latency and PZ lead of visual P3b wave group, and FZ lead of N1 wave of visual P3a wave group were the influencing factors of simple intelligent mental state.

Objective:To investigate the applicable effect of anatomical retroperitoneoscopic adrenalectomy in treating patients with adrenal tumors.Methods:A total of 112 patients with adrenal tumors admitted to the Department of urology of The Third Medical Center of Chinese PLA General Hospital from January 2016 to January 2021 were selected as research subjects，and they were divided into control group and study group according to the double-blind method，with 56 cases in each group. The patients in the control group were treated with laparoscopic transabdominal adrenalectomy，while the patients in the study group were treated with anatomical retroperitoneoscopic adrenalectomy. The clinical indicators of the two surgical methods were compared. Before and six hours after surgery，the serum levels of inflammatory factors including interleukin-6（IL-6），interleukin-1β（IL-1β），and hypersensitive C-reactive protein（hs-CRP）were detected by enzyme-linked immunosorbent assay（ELISA），and the electrolytes such as Na +，K +，and bicarbonate（HCO 3-）were detected by the America-made Medica electrolyte analyzer. The prognosis and incidence of complications in the two groups were observed. Results:Compared with the control group，the time spent in operation，the time spent for drainage tube placement and gastrointestinal function recovery，and hospital stay were all shorter in the study group（ P < 0.05 or P < 0.01）. After surgery，the serum levels of IL-6，IL-1β，and hs-CRP in the study group were significantly lower than those in the control group，and the levels of Na + and HCO 3- in the study group were also lower than those in the control group，while the K + level was higher than that in the control group，all with statistically significant differences（ P < 0.05 or P < 0.01）. The incidence of complications in the study group［3.57%（2/56）］was significantly lower than that in the control group［（14.29%（8/56）］，with statistically significant difference（ P < 0.05）. No recurrence or metastasis occurred in the two groups during the six-month follow-up after surgery. Conclusion:Anatomical retroperitoneoscopic adrenalectomy can better reduce the surgery trauma to patients with adrenal tumors，lessen the impact on the internal environment of patients，effectively promote the postoperative rehabilitation process，and has higher safety.

Objective:To investigate the applicable effect of anatomical retroperitoneoscopic adrenalectomy in treating patients with adrenal tumors.Methods:A total of 112 patients with adrenal tumors admitted to the Department of urology of The Third Medical Center of Chinese PLA General Hospital from January 2016 to January 2021 were selected as research subjects，and they were divided into control group and study group according to the double-blind method，with 56 cases in each group. The patients in the control group were treated with laparoscopic transabdominal adrenalectomy，while the patients in the study group were treated with anatomical retroperitoneoscopic adrenalectomy. The clinical indicators of the two surgical methods were compared. Before and six hours after surgery，the serum levels of inflammatory factors including interleukin-6（IL-6），interleukin-1β（IL-1β），and hypersensitive C-reactive protein（hs-CRP）were detected by enzyme-linked immunosorbent assay（ELISA），and the electrolytes such as Na +，K +，and bicarbonate（HCO 3-）were detected by the America-made Medica electrolyte analyzer. The prognosis and incidence of complications in the two groups were observed. Results:Compared with the control group，the time spent in operation，the time spent for drainage tube placement and gastrointestinal function recovery，and hospital stay were all shorter in the study group（ P < 0.05 or P < 0.01）. After surgery，the serum levels of IL-6，IL-1β，and hs-CRP in the study group were significantly lower than those in the control group，and the levels of Na + and HCO 3- in the study group were also lower than those in the control group，while the K + level was higher than that in the control group，all with statistically significant differences（ P < 0.05 or P < 0.01）. The incidence of complications in the study group［3.57%（2/56）］was significantly lower than that in the control group［（14.29%（8/56）］，with statistically significant difference（ P < 0.05）. No recurrence or metastasis occurred in the two groups during the six-month follow-up after surgery. Conclusion:Anatomical retroperitoneoscopic adrenalectomy can better reduce the surgery trauma to patients with adrenal tumors，lessen the impact on the internal environment of patients，effectively promote the postoperative rehabilitation process，and has higher safety.