Mesoderm products and PPDO lines jointly improve the effects of periorbital rejuvenation / 中华医学美学美容杂志

Objective:To observe the clinical effect of injecting hyaluronic acid fillers and Poly (p-dioxanone) (PPDO) absorption line in improving periorbital aging.Methods:From May 2017 to May 2019, 104 patients aged 20-55 (36±5) years were treated with combination of injection and PPDO; a score scale was developed based on the tear ditch aging, and beauty seekers were divided into two groups, 48 in mild and 56 in moderate, and followed up for 6-12 months after treatment.Results:Immediately postoperative satisfaction in the mild group was significantly higher than that in the moderate group, and ideal within 6 months. For 6 months after surgery, satifactoty score was (7.48±1.29) in the mild group and (6.32±1.03) in the moderate group; the treatment effect decreased over time.Conclusions:Based on the rheological characteristics of sodium hyaluronic acid gel and the anatomical characteristics of tear ditch formation, multi-point injection filling technique combined with small line to treat light and moderate orbital aging can achieve good clinical results.

Representative analysis of elderly subjects in clinical trials of prostate cancer drugs / 中华老年医学杂志

Objective:To analyze whether the sample of elderly subjects in clinical trials of prostate cancer drugs is representative.Methods:From the level of trial design, the age distribution of subjects in clinical trials of prostate cancer drugs for elderly patients from January 2019 to December 2021 was inquired on the platform of drug clinical trial registration and information disclosure.From the actual enrollment level, the prostate cancer drug clinical trials initiated and completed by a hospital from January 2010 to June 2022 were collected.The age information of subjects in all centers was collected for multicenter trials with a summary report, and the age data of subjects in the center was collected for trials without a summary report or single-center trials.The average age of prostate cancer onset and the incidence of prostate cancer in different age groups were compared with the Chinese Cancer Registry System, so as to compare whether the two were consistent.Results:Most of the trials(72.1%、44/61)did not set upper age limit at the protocol design level.Phase Ⅲ and phase Ⅳ trials did not set an upper age limit for enrolled subjects in the protocol.From the actual enrollment level, a total of 19 studies were included in this study, with 1 402 subjects, and the average age of subjects was 67.1±8.6 years old, which was significantly different from the average age of prostate cancer in China and Beijing(all P<0.001). The age group with the largest number of participants was 60-64 years old(34.2%、479/1 402). The population aged ≥75 years was the least(21.5%, 301/1 402), which was different from the high incidence age group of prostate cancer in China in 2017(421.77/100 000). Conclusions:Clinical trials of prostate cancer drugs are designed to cover all age groups of elderly patients, but the actual sample representation of the enrolled elderly subjects is insufficient.Under the premise of protecting the safety of subjects, the trial population who are matched for the average age of prostate cancer onset and the incidence of prostate cancer in age groups, should be gradually increased.

Efficacy and possible mechanism study of low-intensity focused ultrasound therapy for neuropathic pain in mice / 中华超声影像学杂志

Objective:To study the efficacy of low-intensity focused ultrasound (LIFU) on neuropathic pain (NP) in mice, and its effect on the activation of astrocytes and the expression of pro-inflammatory cytokines were discussed.Methods:Thirty-six male C57BL/6J mice were randomly divided into three groups: sham operation (Sham) group and chroinc constriction injury (CCI) model group and treatment (CCI+ LIFU) group, 12 mice in each group.NP model was established by CCI on the sciatic nerve. The group of CCI+ LIFU received LIFU treatment for the anterior cingulate cortex (ACC) on the 7th day after surgery, the mechanical withdrawal threshold (MWT) on the affected side of mice was measured at preoperation 3, 6, 12, 18, 24, and 27 days after operation, respectively, H&E staining was used to observe pathological morphological changes in the ACC region, the expression levels of ACC region AQP4 and GFAP protein were detected by Western Blot and immunofluorescence, and the expression levels of ACC region pro-inflammatory cytokines IL-1β and TNF-α were detected by enzyme-linked immunosorption assay.Results:Compared with Sham group, MWT in the CCI group decreased from the 3rd day until the 27th day after surgery( P<0.05); Compared with the CCI group, the MWT in the CCI+ LIFU group increased on the 24th day after surgery, and was significantly higher than that of the CCI group on the 24th and 27th day after surgery ( P<0.05); LIFU stimulation did not produce significant pathological changes in the ACC region; Western Blot and immunofluorescence showed that AQP4 and GFAP protein expression in the ACC region were upregulated ( P<0.05) after peripheral nerve injury, while AQP4 and GFAP protein expression was downregulated after LIFU treatment ( P<0.05); Enzyme-linked immunosorbents showed that the expression of pro-inflammatory cytokines IL-1β and TNF-α in the region of ACC was upregulated ( P<0.05) after peripheral nerve injury, while the expression of IL-1β and TNF-α was downregulated after LIFU treatment ( P<0.05). Conclusions:LIFU can effectively relieve mechanical pain sensitivity symptoms in mice induced by CCI, possibly by inhibiting activation of astrocytes and neuro-inflammatory responses.

Effects of leptin on proliferation and differentiation of hypoxic rat retinal progenitor cells in vitro / 南方医科大学学报

OBJECTIVE@#To investigate the the effects of leptin on the proliferation, differentiation and PTEN expression of rat retinal progenitor cells (RPCs) cultured under hypoxic condition.@*METHODS@#SD rat RPCs were cultured in normoxic conditions or exposed to hypoxia in the presence of 0, 0.3, 1.0, 3.0, 10, and 30 nmol/L leptin for 12, 48 and 72 h, and the cell viability was assessed using cell counting kit 8 (CCK 8) assay. The RPCs in primary culture were divided into control group, hypoxia group, and hypoxia+leptin group, and after 48 h of culture, the cell medium was replaced with differentiation medium and the cells were further cultured for 6 days. Immunofluorescence staining was employed to detect the cells positive for β-tubulin III and GFAP, and Western blotting was used to examine the expression of PTEN at 48 h of cell culture.@*RESULTS@#The first generation of RPCs showed suspended growth in the medium with abundant and bright cellular plasma and formed mulberry like cell spheres after 2 days of culture. Treatment with low-dose leptin (below 3.0 nmol/L) for 48 h obviously improved the viability of RPCs cultured in hypoxia, while at high concentrations (above 10 nmol/L), leptin significantly suppressed the cell viability (P < 0.05). The cells treated with 3.0 nmol/L leptin for 48 h showed the highest viability (P < 0.05). After treatment with 3.0 nmol/L leptin for 48 h, the cells with hypoxic exposure showed similar GFAP and β-tubulin Ⅲ positivity with the control cells (P>0.05), but exhibited an obvious down-regulation of PTEN protein expression compared with the control cells (P < 0.05).@*CONCLUSION@#In rat RPCs with hypoxic exposure, treatment with low dose leptin can promote the cell proliferation and suppress cellular PTEN protein expression without causing significant effects on cell differentiation.

Postoperative rehabilitation effect and influence factors of adult prelingual deafness with cochlear implant / 中华耳鼻咽喉头颈外科杂志

Objective: To investigate whether pre-lingual deafness adult caused by inadequate auditory compensation in childhood can benefit from cochlear implants and the related influencing factors. Methods: A total of 26 prelingual deafness as experimental group [11 males and 15 females, the age of operation was (24.5±5.7) years] and 13 postlingual deafness as control group [5 males and 8 females, the age at the time of operation was (42.2±11.4) years] were recruited. Objective assessment included hearing threshold and speech recognition rate tests while wearing cochlear implants. Subjective assessment used Nijmegen Cochlear Implant Questionnaire to assess hearing-related quality of life of subjects. The changes of hearing ability in the prelingual deafness group before and after operation and the differences with the postlingual deafness group were compared, and the correlation between speech recognition ability and the age diagnosed as severe or profound deafness, the age of hearing aid invalid, and duration of wearing cochlear implant were analyzed as factor indicators. All statistical results were analyzed by SAS 9.4 software. Results: In terms of objective indicators, the speech recognition rate of pre-lingual deafness was significantly lower than that of post-lingual deafness [(35.4±28.0)% vs (80.9±8.0)%,t=7.67, P<0.001], while there was no statistical difference in hearing threshold between the two groups [(34.8±4.0) dB HL vs (33.1±3.7) dB HL, t=1.30, P>0.05]. The indicators in the subjective questionnaire showed that the prelingual deafness group was only weaker in advanced sound perception, confidence and total mean score than the post-lingual deafness group (P<0.05), and there was no significant difference in other aspects(P>0.05), meanwhile, all indicators of the prelingual deafness group were significantly improved compared with the preoperative level (P<0.001). There was a moderate positive correlation between the hearing quality and the speech recognition rate in the prelingual deafness group(r=0.51, P=0.008). The regression analysis showed that the invalid age of hearing aid was the exact influencing factor of speech recognition rate. Conclusions: Certain prelingual deaf adults can adapt to cochlear implants and obtain different degrees of auditory assistance. Compared with the improvement of objective auditory ability assessment, the patient who received cochlear implantation gain more improvement in auditory related quality of life subjectively. The ineffective age of preoperative hearing aid is an important factor, which needs to be aroused sufficient preoperative attention.

Study on the diffusion of hydrogen fluoride in an electrolytic fluoride plant based on CFD numerical simulation method / 中华劳动卫生职业病杂志

Objective: Using CFD technology to grasp the distribution and diffusion of hydrogen fluoride in an electrolytic fluorine plant, provide guidance and scientific basis for enterprises to carry out occupational health management in enterprises, install hazardous substance alarm devices, and protect workers' occupational health. Methods: In July 2019, the diffusion law of hydrogen fluoride gas produced in an electrolytic fluorine plant is selected as the research object. Through the establishment of models and grids, the Fluent numerical simulation method is finally used to simulate the diffusion and distribution of hydrogen fluoride gas under ventilation conditions. Results: The results showed that the average concentration of hydrogen fluoride was 0.045 mg/m(3) in the workplace, and the absorbed zone height (1.5 m) was 0.02 mg/m(3) in the inspection channel, which was in accordance with the national standard. However, there is eddy current above the electrolyzer near the inlet, may lead to the accumulation of hydrogen fluoride gas. Conclusion: The research of CFD numerical simulation method on the distribution and diffusion of hydrogen fluoride concentration in electrolytic fluorine plant can be applied to the prevention, control and management of occupational hazards in electrolytic fluorine plant.

Establishment and clinical validation of an artificial intelligence YOLOv51 model for the detection of precancerous lesions and superficial esophageal cancer in endoscopic procedure / 中华肿瘤杂志

Objective: To construct the diagnostic model of superficial esophageal squamous cell carcinoma (ESCC) and precancerous lesions in endoscopic images based on the YOLOv5l model by using deep learning method of artificial intelligence to improve the diagnosis of early ESCC and precancerous lesions under endoscopy. Methods: 13, 009 endoscopic esophageal images of white light imaging (WLI), narrow band imaging (NBI) and lugol chromoendoscopy (LCE) were collected from June 2019 to July 2021 from 1, 126 patients at the Cancer Hospital, Chinese Academy of Medical Sciences, including low-grade intraepithelial neoplasia, high-grade intraepithelial neoplasia, ESCC limited to the mucosal layer, benign esophageal lesions and normal esophagus. By computerized random function method, the images were divided into a training set (11, 547 images from 1, 025 patients) and a validation set (1, 462 images from 101 patients). The YOLOv5l model was trained and constructed with the training set, and the model was validated with the validation set, while the validation set was diagnosed by two senior and two junior endoscopists, respectively, to compare the diagnostic results of YOLOv5l model and those of the endoscopists. Results: In the validation set, the accuracy, sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) of the YOLOv5l model in diagnosing early ESCC and precancerous lesions in the WLI, NBI and LCE modes were 96.9%, 87.9%, 98.3%, 88.8%, 98.1%, and 98.6%, 89.3%, 99.5%, 94.4%, 98.2%, and 93.0%, 77.5%, 98.0%, 92.6%, 93.1%, respectively. The accuracy in the NBI model was higher than that in the WLI model (P<0.05) and lower than that in the LCE model (P<0.05). The diagnostic accuracies of YOLOv5l model in the WLI, NBI and LCE modes for the early ESCC and precancerous lesions were similar to those of the 2 senior endoscopists (96.9%, 98.8%, 94.3%, and 97.5%, 99.6%, 91.9%, respectively; P>0.05), but significantly higher than those of the 2 junior endoscopists (84.7%, 92.9%, 81.6% and 88.3%, 91.9%, 81.2%, respectively; P<0.05). Conclusion: The constructed YOLOv5l model has high accuracy in diagnosing early ESCC and precancerous lesions in endoscopic WLI, NBI and LCE modes, which can assist junior endoscopists to improve diagnosis and reduce missed diagnoses.

Effects of finasteride combined with tamsulosin hydrochloride on glandular microvessel density during the perioperative period in patients with benign prostatic hyperplasia / 中国基层医药

Objective:To investigate the effects of finasteride combined with tamsulosin hydrochloride administered during the perioperative period on glandular microvessel density in patients with benign prostatic hyperplasia.Methods:Ninety patients with benign prostatic hyperplasia who received treatment in Wenzhou Hospital of Integrated Traditional Chinese and Western Medicine from August 2017 to August 2019 were included in this study. They were randomly assigned to receive either oral tamsulosin hydrochloride alone (control group, n = 45) or oral finasteride combined with tamsulosin hydrochloride (observation group, n = 45) during the perioperative period of transurethral resection of the prostate. All patients received 6 weeks of medication. Clinical efficacy, adverse reactions, and urodynamic indexes, glandular microvessel density, International Prostatism Symptom Score, bother score, and urine color/degree of haematuria score pre- and post-treatment were compared between the two groups. Results:The maximum urinary flow rate in each group significantly increased 6 weeks after treatment compared with before treatment. The detrusor pressure and residual urine volume in each group decreased 6 weeks after treatment compared with before treatment. After 6 weeks of treatment, the maximum urinary flow rate was significantly higher in the observation group than in the control group [(15.63 ± 2.26) mL/s vs. (13.14 ± 2.23) mL/s], and residual urine volume was significantly lower in the observation group than in the control group [(29.19 ± 4.81) mL vs. (32.25 ± 5.52) mL, t = 5.26, 2.80, both P < 0.05). International Prostatism Symptom Score measured 6 weeks after treatment and urine color/degree of haematuria score measured 1 week after treatment were (12.09 ± 2.17) points and (1.51 ± 0.27) points, respectively in the observation group, which were significantly lower than those in the control group [(14.28 ± 2.22) points, (2.03 ± 0.38) points, t = 4.73, 7.48, both P < 0.05]. Factor VIII related antigen- and CD34-positive glandular microvessel density values in the observation group were (14.74 ± 3.05) counts/visual field and (19.41 ± 3.07) counts/visual field, respectively, which were significantly lower than those in the control group [(18.08 ± 3.16) counts/visual field, (22.27 ± 3.16) counts/visual field, t = 5.10, 4.35, both P < 0.05]. The incidence of postoperative hematuria was significantly lower in the observation group than in the control group [15.56% (7/45) vs. 35.56% (16/45), χ2 = 4.73, P < 0.05]. Conclusion:Compared with tamsulosin hydrochloride alone, finasteride combined with tamsulosin hydrochloride administered during the perioperative stage can greatly improve the urodynamic indexes of patients with benign prostatic hyperplasia, reduce microvessel density value, International Prostatism Symptom Score, bother score, and decrease the incidence of hematuria. The combined therapy provides a novel idea for preventing perioperative bleeding in patients with benign prostatic hyperplasia.

Application effect of SFPC teaching on the internship teaching of nursing students in department of obstetrics and gynecology / 中华医学教育探索杂志

Objective:To observe the application effect of standard management-flexible teaching-pay attention to comprehensive quality improvement-correct evaluation (SFPC) teaching on the internship teaching of nursing students in department of obstetrics and gynecology.Methods:Forty-five nursing students who interned in the department of obstetrics and gynecology from July to December 2019 were classified as the control group, and the traditional teaching was adopted. Another 47 nursing students who interned from January to June 2020 were taken as research group, and SFPC was applied. The rotation assessment scores, clinical communication ability and comprehensive ability before and after the internship, and satisfaction with teaching of these nursing students were compared between the two groups. SPSS 23.0 was used for t test, chi-square test and rank sum test. Results:The results of theoretical and operational assessment of obstetrics and gynecology in the research group were significantly higher than those in the control group[(94.28±5.77) vs. (83.91±5.19); (91.85±5.27) vs. (81.07±5.24)]. The scores of building harmonious relationship, identifying patients' problems, keen listening, passing effective information, joint participation and verification of feelings after the teaching were significantly higher than those before teaching ( P<0.05). The scores of ideological quality, teaching activities, ability evaluation and other activities in the comprehensive ability assessment were significantly higher than those before teaching ( P<0.05), and those of research group were significantly higher than those of the control group ( P<0.05). The were significant differences in the grade distribution of teaching satisfaction between the two groups ( P<0.05), and the total satisfaction rate of nursing students in the study group was higher than that in the control group (95.74% vs. 80.00%). Conclusion:The application of SFPC teaching in the clinical teaching of nursing students in department of obstetrics and gynecology can significantly improve the performances of nursing students, clinical communication ability, comprehensive ability and nursing students' satisfaction with teaching.

Application of oral fluid in SARS-CoV-2 nucleic acid and antibody detection / 中华预防医学杂志

This study aimed to explore the application value of new biological specimen oral fluid in SARS-CoV-2 nucleic acid and antibody detection. Oral fluid and paired respiratory and blood specimens from 7 confirmed cases of two COVID-19 cluster epidemic were collected in Beijing from October to November 2021. SARS-CoV-2 virus and IgG antibody were detected by real time PCR kits and serum antibody detection reagents, and SARS-CoV-2 IgG antibody in oral fluids was detected by a new established method of magnetic particle chemiluminescence. The results showed that the nucleic acid amplification test of SARS-CoV-2 on nasopharyngeal swabs, throat swabs and oral fluid specimens from 3 confirmed cases of COVID-19 was positive, among which the Ct value for ORF1a/b and N gene of oral fluid samples in 2 cases was close to that of throat swab, and the Ct value of oral fluid sample for 1 case was higher than that of throat swab. The complete genome sequence of one oral fluid specimen was obtained, which belonged to the VOC/Delta variant strain. The SARS-CoV-2 IgG antibodies of the paired oral fluid and serum were all positive, and the S/CO values of oral fluid were all lower than those of serum. The series of oral fluid results showed that SARS-CoV-2 IgG antibody level increased from 11 to 32 days after the onset of the disease.

Clinical characteristics and prognostic features of 63 HIV-associated diffuse large B-cell lymphoma: a single-center real-world study in China / 中华血液学杂志

Objective: This study aimed to look into the clinical characteristics and prognosis of patients with human immunodeficiency virus (HIV) -associated diffuse large B-cell lymphoma (DLBCL) . Methods: Retrospective review of the clinical data of 63 HIV-infected patients with DLBCL diagnosed at Chongqing University Cancer Hospital between July 2008 and August 2021. The Kaplan-Meier method was used to calculate survival curves, and the log-rank test method was used to compare survival between groups. The Cox proportional hazards model was used for multivariate analysis. Results: In 63 patients with HIV-associated DLBCL, 57 (90.5% ) were men, and the median age was 49 (23-87) years. The most common pathological subtype was the germinal center B-cell-like lymphoma (74.6% ) ; 46.0% (29/63) were combined with extranodal lesions. Seventeen of 63 (27.0% ) patients had large masses (≥7.5 cm) . Twenty of 63 (31.7% ) patients had B symptoms. The median CD4(+) T cell count was 203 (4-1022) ×10(6)/L. A total of 49% (25/51) patients had CD4(+) cell count <200×10(6)/L, 56.9% (33/58) had high (3-5) International Prognostic Index (IPI) scores, and 43.1% (25/58) had low (0-2) IPI scores. Further, 78% (46/59) were diagnosed with Ann Arbor Stage Ⅲ/Ⅳ, and 25.4% (16/63) didn't receive chemotherapy. A total of 22.2% (14/63) of patients received less than four cycles of chemotherapy, and 52.4% (33/63) received four or more cycles of chemotherapy. Among patients undergoing chemotherapy, 61.7% (29/47) received R-CHOP-like regimens, and 38.3% (18/47) used CHOP-like regimens. The 1-, 2-, 3-, and 5-year overall survival (OS) rates were 65.0% , 53.8% , 47.1% , and 43.5% , respectively. Univariate analysis revealed that age ≥ 60 years (P=0.012) , Eastern Cooperative Oncology Gruop Performance Status (ECOG-PS) score 2-4 points (P=0.043) , IPI score 3-5 points (P=0.001) , β(2)-MG elevation (≥5.5 mg/L) (P=0.007) , and systemic chemotherapy cycles less than four times (P<0.001) were the negative prognostic factors affecting the OS of patients. The Cox multivariate analysis depicted that age ≥60 years (HR=2.272, 95% CI 1.110-4.651, P=0.025) , IPI score 3-5 points (HR=3.562, 95% CI 1.794-7.074, P<0.001) , ECOG-PS score 2-4 points (HR=2.675, 95% CI 1.162-6.153, P=0.021) , and number of cycles of chemotherapy<4 (HR=0.290, 95% CI 0.176-0.479, P<0.001) were independent risk factors for adverse prognosis of OS. Conclusion: HIV-associated DLBCL is the most common HIV-related tumor, is most commonly seen in men, and has a high 1-year mortality rate. Chemotherapy combined with antiretroviral therapy can improve patient prognosis.

In Vitro Fatigue Test of Lung Volume Reduction Loop / 中国医疗器械杂志

Lung volume reduction loop uses bronchoscopic lung volume reduction(BLVR) technology to compress and collapse the necrotic emphysema tissue and exhaust the internal gas to achieve the purpose of lung volume reduction to treat emphysema. After the lung volume reduction loop is implanted into the human body, the compressed part of the lung tissue tends to expand with breathing, which makes the lung volume reduction loop expand into a linear trend periodically. Fatigue resistance is one of the most important performance indexes of the lung volume reduction loop. In the paper, Z-direction vibration fatigue machine was used to simulate the changes of human respiratory cycle movement to test the fatigue performance of lung volume reduction loop, which can provide some reference for the test method of in vitro fatigue performance of lung volume reduction related products in the future.

Severe Type of COVID-19: Pathogenesis, Warning Indicators and Treatment / 中国结合医学杂志

Coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus 2, is a major public health issue. The epidemic is unlikely to be contained until the global launch of safe and effective vaccines that could prevent serious illnesses and provide herd immunity. Although most patients have mild flu-like symptoms, some develop severe illnesses accompanied by multiple organ dysfunction. The identification of pathophysiology and early warning biomarkers of a severe type of COVID-19 contribute to the treatment and prevention of serious complications. Here, we review the pathophysiology, early warning indicators, and effective treatment of Chinese and Western Medicine for patients with a severe type of COVID-19.

Practice of clinical pharmacists participating in fine management of pharmaceutical affairs in gastroenterology department based on DRG data / 中国药房

OBJECTIVE To explor e the effect of clinical pharmacists participatin g in fine management of pharmaceutical affairs among the inpatients in the department of gastroenterology based on diagnosis related groups （DRG）data. METHODS The discharged patients in the gastroenterology department of our hospital were selected as the research objects to compare the changes of DRG indicators and hospitalization related indicators before （from April to December 2019）and after （from April to December 2020 and from April to December 2021） pharmacists participating in fine management of pharmaceutical affairs in the gastroenterology department. The key DRG with the highest number of enrolled cases and DRG cases of the total cost overrun were analyzed to explore the deviation of various costs. The rationality of drug use was evaluated for the cases in each DRG that exceeded the benchmark hospital payment standard by three times ，with the help of prescription doctor ’s advice review. RESULTS In the first year of intervention ，the case combination index value of gastroenterology department was increased ，meanwhile，the cost consumption index ，time consumption index and average hospital stay were decreased significantly （P＜0.01）. In the second year of intervention ，total weight of the cases in gastroenterology department was increased ，while cost consumption index ，time consumption index ，hospitalization cost per time ，drug cost per time and average hospital stay were all decreased significantly ， compared with before intervention （P＜0.01）. Among the top five DRG ，the drug cost per time in the GZ 15，GZ13 and GJ 15 were all decreased significantly in the first year of intervention ；hospitalization cost per time and drug cost per time in the GZ 15，GZ13， GJ15 and GJ 13 were all decreased significantly in the second year of intervention （P＜0.01）；after the intervention of clinical pharmacists in DRG over-expenditure cases ，the over-expenditure rate decreased significantly （P＜0.001）. CONCLUSIONS The fine management of pharmaceutical affairs in our hospital has achieved certain results and promotes the rationality of clinical drug use，and provides a new entry point for the cost control and utilization of medical institutions under the background of 〔2020〕68号） DRG.

Efficacy and Mechanism of Yishen Shengjing Prescription in Treatment of Oligoasthenospermia / 中国实验方剂学杂志

ObjectiveWe aimed to investigate the efficacy and mechanism of Yishen Shengjing Prescription （YSP） in the treatment of oligoasthenospermia in rats. MethodThe oligoasthenospermia rat model was established by injection with cyclophosphamide （35 mg·kg-1·d-1） for 5 consecutive days. Rats were randomly assigned into control group （without treating with cyclophosphamide）， model group， low- （YSP-L）， medium- （YSP-M）， and high- （YSP-H） dose （2.91， 5.83， and 11.66 g·kg-1， respectively） groups， Wuzi Yanzongwan （WYW， 1.03 g·kg-1） group， and L-carnitine （0.17 g·kg-1） group， with 8 rats in each group. After 28 days of drug intervention， the body weight， testicular weight， and testicular index of rats were recorded. The sperm quality in epididymis was detected by computer-assisted sperm analysis （CASA） system. Hematoxylin-eosin （HE） staining was employed for observation of testicular tissue morphology. The levels of malondialdehyde （MDA） and superoxide dismutase （SOD） in testicular tissue were detected by colorimetry. The levels of follicle-stimulating hormone （FSH）， luteinizing hormone （LH）， and testosterone （T） in serum were determined by enzyme-linked immunosorbent assay（ELISA）. TdT-mediated dUTP nick-end labeling （TUNEL） was employed to detect the apoptosis of testicular cells. The protein levels of B cell lymphoma-2（Bcl-2）， Bax， and cleaved Caspase-3 in testicular tissue were detected by Western blot. ResultCompared with the control group， the model group showed decreased body weight， testicular weight and index， sperm concentration and motility （P<0.01） and increased testicular pathological score （P<0.01）. Compared with the model group， the YSP-M， YSP-H， WYW， and L-carnitine groups showed increased body weight， testicular weight， testicular index， sperm concentration and motility and decreased testicular pathological score. After modeling， the SOD level decreased （P<0.01） while the MDA content increased （P<0.01） in the testicular tissue. YSP-H， WYW， and L-carnitine reversed the SOD and MDA level changes caused by modeling. Compared with the control group， the model group exhibited declined T level （P<0.01） and increased FSH and LH levels （P<0.01）. Compared with the model group， YSP， WYW， and L-carnitine increased the T level （P<0.01） and decreased the LH level （P<0.05， P<0.01）. The apoptosis rate of spermatogenic cells in the model group was higher than that in the control group （P<0.01）， whereas YSP-M， WYW， and L-carnitine reversed such changes （P<0.01）. The model group rats showed decreased expression of Bcl-2（P<0.05） and increased expression of Bax and cleaved Caspase-3 （P<0.05， P<0.01）. Compared the model group， YSP-M， YSP-H， WYW， and L-carnitine up-regulated the Bcl-2 expression and down-regulated the cleaved Caspase-3 expression （P<0.05， P<0.01）. ConclusionYSP improved the sperm quality of oligoasthenospermia model rats by regulating the antioxidant system and sex hormone levels and inhibiting the apoptosis of spermatogenic cells.

Trend in resistance to beta-cypermethrin in Aedes albopictus and preliminary strategies of beta-cypermethrin use in Xuhui District， Shanghai / 上海预防医学

ObjectiveTo investigate the resistance to beta-cypermethrin in Aedes albopictus in Xuhui District， Shanghai， China， and determine the effects of insecticide components， concentration and distance on eliminating resistant population of Aedes albopictus in ultra-low volume （ULV） spray， which would provide scientific evidence for effective mosquito control strategy and rational use of beta-cypermethrin. MethodsLarval impregnation method recommended by the World Health Organization was used to determine the drug resistance in Aedes albopictus larvae to calculate the median lethal concentration （LC50） of insecticides to Aedes albopictus larvae. The resistance to insecticides in female adults of Aedes albopictus was measured by the adult mosquito contact tube method recommended by the World Health Organization， and the 24-hour mortality （%） of female mosquitoes caused by insecticides was measured. Then the 24-hour mortality （%） of resistant female adults of Aedes albopictus due to beta cypermethrin monotherapy and compound agents was calculated by ULV spray. ResultIn 2016， 2017， 2019 and 2021， the resistance ratio in Aedes albopictus larvae to beta-cypermethrin was 9.22， 68.22， 37.33 and 59.22， respectively. In 2021， the 24-hour mortality of Aedes albopictus female adults was 62.07%. ULV sprayer experiments were performed using 4.5% beta-cypermethrin （single dose） and 12.0% beta-cypermethrin-chlorpyrifos （compound dose）. The 24-hour mortality increased with the concentration of the insecticides. The overall mortality caused by compound was higher than that by single dose. The mortality were 24.24%， 31.60% and 97.83% at the concentrations of 0.045 0%， 0.067 5% and 0.090 0% for single dose， respectively， and 58.87%， 61.62% and 90.00% at the concentrations of 0.12%， 0.18% and 0.24% for compound dose， respectively. There was no significant difference in mortality when spraying distance was 10 m， 30 m and 50 m. ConclusionAedes albopictus in Xuhui District is developed varying resistance to beta-cypermethrin. It warrants to strengthen the monitoring on insecticide resistance to formulate scientific and reasonable strategy for insecticide use. and reduce the resistance level of the Aedes albopictus to beta-cypermethrin. Compound dose is recommended to improve the effect. In addition， comprehensive treatment may be adopted to reduce the resistance.

Differences and causes of myopia among students in different stages in the same region in Xi'an / 国际眼科杂志(Guoji Yanke Zazhi)

AIM: To gather baseline data on visual acuity by screening students from different stages in the same administrative district of Xi'an, as well as to analyze and investigate disparities in myopia rates among students from different stages in this area.METHODS: A total of 13 707 students from 21 elementary schools, 3 middle schools, 3 general high schools and 1 vocational high school were randomly selected for uncorrected distance visual acuity and computerized refraction testing in 28 schools with a random sampling approach.RESULTS: The detection rate of myopia in elementary, middle, high and vocational high schools in the same region of Xi'an were 32.27%, 72.07%, 81.22% and 65.12%, respectively; The total myopia rate of students was 47.81%; The myopia rate of girls was higher than that of boys in all grades; The myopia rates of elementary and middle schools increased with the growth of grades; The percentage of high myopia increased from 2.40% in elementary schools to 16.51% in high schools with the growth of grades.CONCLUSION: The myopia rate in different stages of the same region is different, and it tends to rise with the gronth of grades; Girls have a higher myopia rate than boys; Compared to the results of the national survey on myopia in different grades of children and adolescents in 2018, the myopia rate in the same region has decreased significantly in 2021 of the elementary school level, although myopia rate of middle school and high school stage do not rise, the decline is not obvious.

Erratum: Author correction to "Development of small-molecule tropomyosin receptor kinase (TRK) inhibitors for NTRK fusion cancers" Acta Pharmaceutica Sinica B 11 (2021) 355-372

[This corrects the article DOI: 10.1016/j.apsb.2020.05.004.].

Application of a computer-assisted surgery system in precision surgery of mediastinal tumors in children / 中华实用儿科临床杂志

Objective:To analyze and summarize the application and significance of the computer-assisted surgery system in precision surgery of mediastinal tumors in children.Methods:The clinical data of 54 children that underwent mediastinal tumor resection surgery in the Affiliated Hospital of Qingdao University from August 2008 to November 2021 were collected.According to whether the Hisense CAS computer-assisted surgery system was used before the operation, the patients were divided into three-dimensional (3D) reconstruction group (29 cases, 53.70%) and two-dimensional (2D) CT group (25 cases, 46.30%). The surgical indicators, postoperative hospital stay, and the incidence of surgical complications were compared between the two groups.The t-test, Mann- Whitney U test, χ2 test or Fisher′ s exact test were carried out for statistical analysis.Simulated surgery and actual surgery were compared for both 3D reconstruction and 2D CT groups. Results:There were no significant differences in gender, age, height, weight, maximum tumor diameter and tumor location between the 3D reconstruction group and 2D CT group (all P>0.05). The operation time of the 3D reconstruction group was [(125.14±41.37) min] was shorter than that of the 2D CT group [(149.24±44.53) min] ( P=0.044). The intraoperative blood loss in the 3D reconstruction group [15.00(13.50, 25.00) mL] was less than that in the 2D CT group [36.00(30.00, 75.00) mL] ( P<0.001). In addition, the indwelling time the closed thoracic drainage tube [4.00 (3.00, 5.50) d] and postoperative hospitalization days [(8.83±3.39) d] in the 3D reconstruction group were shorter than those in the 2D CT group [7.00(5.00, 11.50) d, (11.00±4.10) d] ( P=0.001, 0.038). No significant difference in postoperative complication rates was found between the 3D reconstruction group and 2D CT group ( P>0.05). The simulated operation was consistent with the actual operation in the 3D reconstruction group. Conclusions:3D reconstruction by the computer-assisted surgery system can truly reveal the anatomical relationship between tumors and surrounding organs and blood vessels, and improve the accuracy and safety of surgical resection of mediastinal tumors in children.