ObjectiveTo investigate the effects of rhizosphere organic acids secreted by the roots of Salvia miltiorrhiza on continuous cropping obstacles. MethodsThe mixed solution of organic acids in the rhizosphere of S. miltiorrhiza in continuous cropping and rotation cropping was added to the hairy roots subcultured for 21 days， and samples were collected on days 0， 2， 4， 6， 8， and 10. The changes of biomass， effective components， primary metabolites， secondary metabolites， antioxidant enzymes， and hormones in hairy roots of S. miltiorrhiza were observed and determined. ResultsCompared with the rotation cropping group and the blank control group， the simulation of organic acid secretion from the roots of S. miltiorrhiza had a significant inhibitory effect on the growth of hairy roots and decreased the content of effective components as well as total sugar and total protein in primary metabolites. Compared with the blank control group， the rotation cropping group and the continuous cropping group showed total sugar and total protein content decreases of 33.9% and 5.1%， respectively. On the other hand， the secretion of organic acids from S. miltiorrhiza roots significantly promoted the accumulation of total phenolic acids and total tanshinone， which showed increases of 14.6% and 1.6%， respectively， in continuous cropping group and rotation cropping group compared with the blank control group. ConclusionThe organic acid environment under continuous cropping significantly inhibited the growth of hairy roots and the accumulation of primary metabolites， while promoting the synthesis and accumulation of secondary metabolites of S. miltiorrhiza.

Objective To observe the value of radiomics models and nomogram model based on two-dimensional ultrasound and automated breast volume scanning(ABVS)for predicting molecular types of breast cancer.Methods Data of 326 female patients of single breast cancer confirmed by pathology were analyzed retrospectively.The patients were randomly divided into training set(n=260)or validation set(n=66)at the ratio of 8∶2,and further divided into Luminal subgroup and non-Luminal subgroup.Radiomics features were extracted based on two-dimensional ultrasound of breast and ABVS imaging,then model2DUS,modelABVS and modelcombined radiomics were constructed,respectively.Univariate analysis and multivariate logistic regression analysis were used to screen independent factors for predicting molecular types of breast cancer,and nomogram model(modelnomogram)was constructed combined with independent factors and radiomics Radscores.The receiver operating characteristic(ROC)curve was used to evaluate the efficacy of each model for molecular type of breast cancer.Results The maximum diameter of tumor(OR=1.029)and the retraction phenomenon(OR=0.408)were both independent predictive factors for molecular type of breast cancer(both P＜0.05).The area under the curve(AUC)of model2DUS,modelABVS.modelcombined radiomics and modelnomogram for predicting molecular type of breast cancer in validation set was 0.67,0.75,0.84 and 0.83,respectively.No significant difference of AUC of modelcombined radiomics and modelnomogram was found(P＞0.05),which were both higher than AUC of model2DUs and modelABVS(all P＜0.05).Conclusion Combined radiomics model and nomogram model based on two-dimensional ultrasound and ABVS could effectively predict molecular type of breast cancer.

Objective:To explore the clinical effects of scalp flaps pedicled with superficial temporal artery parietal branch in repairing facial destructive burn wounds.Methods:A retrospective observational study was conducted. From January 2016 to December 2021, 15 patients with facial destructive burns who met the inclusion criteria were admitted to Zhengzhou First People's Hospital, including 11 males and 4 females, aged 22 to 79 years. Two patients were complicated with unilateral eyeball destructive burns, two patients were complicated with unilateral auricle defects, eight patients were complicated with lip and cheek defects, and three patients were complicated with lip, cheek, and unilateral nasal alar defects. The burn wound areas ranged from 9 cm×6 cm to 13 cm×10 cm. The scalp flaps pedicled with superficial temporal artery parietal branch, with the area of 10 cm×7 cm to 15 cm×11 cm, were designed, excised, and transferred for repairing burn wounds. The secondary wounds at the donor sites were repaired with medium-thickness scalp grafts. According to patient's needs, the hairs grew at the facial transplanted flap were removed by laser at 2 weeks after the flap was completely viable, or the expanded scalp flap was used to treat the secondary alopecia in the flap donor area of the head at 3 months after the primary wound repair. The survival of the flap/skin graft and the wound healing of the donor and recipient areas after the primary wound repair were recorded. During the follow-up, the appearance of the flap, the scar hyperplasia at the suture site, the repair effect of facial functional parts, the treatment effects of laser hair removal and secondary alopecia treatment at the flap donor site were observed; the patient's satisfaction with the overall repair effect was inquired.Results:After the primary wound repair, all the flaps transplanted to the burn wounds and the skin grafts transplanted to the secondary wounds of the flap donor sites survived well, and the wounds at the donor and recipient sites of flap healed well. The color, texture, and thickness of flap were basically the same as those of normal facial skin, and the scar at the suture site was slight during 3 to 18 months of follow-up period after the primary wound repair. In 11 patients complicated with lip defects, the oral integrity, and the opening and closing functions of mouth were restored with the mouth opening being 2.0-2.5 cm and no microstomia; all the patients could carry out basic language communication, 8 of them could take regular food, and 3 of them could take soft food. The wounds in two patients with unilateral eyeball destructive burns were repaired. In 2 patients complicated with auricle defects, the wounds were repaired, and the external auditory canals were normal. In 3 patients complicated with unilateral nasal alar defects, their noses had poor appearance with reduced nostrils. No hair growth was observed in the facial flap sites after treatment of laser hair removal in 8 patients. Five patients were successfully treated with expanded scalp flaps for secondary alopecia in the flap donor area of the head. The patients were all satisfied with the overall repair effect.Conclusions:The scalp flap pedicled with superficial temporal artery parietal branch has abundant blood supply and is suitable for repairing the wounds in facial destructive burns. It is easy to transfer and can better restore the appearance and function of the recipient area with minimal damage to the flap donor area, which is worthy of clinical promotion.

Continuous cropping obstacle is the bottleneck of medicinal plant cultivation, which seriously affects the quality and yield of medicinal materials. The research on the mechanism of continuous cropping obstacle has evolved from soil physical and chemical properties and allelopathy in the 1970s to the changes of rhizosphere microenvironment and plant response mechanism at present. According to the available studies in this field and our previous research work, we systematically analyzed the mechanism of rhizosphere exudate-mediated microbial community reconstruction in the soil of the medicinal plants in continuous cropping. Specifically, rhizosphere exudates, providing the carbon source and energy for microbial growth, act as inducers or repellents to induce microbial growth or transfer, thereby changing the physicochemical properties (such as acidity) of rhizosphere soil and further altering the structure of rhizosphere microbial community. Further, we comprehensively discussed the ways of synergism between rhizosphere exudates and soil microorganisms in causing harm to the medicinal plants in continuous cropping. That is, rhizosphere exudates mediate the infection of the rhizosphere by pathogenic microorganisms, increase the susceptibility of the nearby plants, inhibit the defense of the host plants, and protect the pathogens to occupy the dominant niche. The synergistic interaction results in the release of more pathogenic factors such as mycotoxins by rhizosphere pathogens, enhanced toxicity of rhizosphere allelochemicals, and deterioration of soil physical and chemical properties. This paper summarizes the role of interaction between rhizosphere exudates and soil microorganisms in the formation of continuous cropping obstacles, aiming to provide a new research idea for revealing the formation mechanism as well as the theoretical support for overcoming continuous cropping obstacles of medicinal plants.

OBJECTIVES: Ultrasound is a safe and timely diagnosis method commonly used for breast lesion, however it depends on the operator to a certain degree. As an emerging technology, artificial intelligence can be combined with ultrasound in depth to improve the intelligence and precision of ultrasound diagnosis and avoid diagnostic errors caused by subjectivity of radiologists. This paper aims to investigate the value of artificial intelligence S-detect system combined with virtual touch imaging quantification (VTIQ) technique in the differential diagnosis of benign and malignant breast masses by conventional ultrasound (CUS). respectively, and AUCs for them were 0.74, 0.86, 0.79, and 0.94, respectively. The diagnostic accuracy of CUS+S-detect was higher than that of CUS (P<0.05). The diagnostic accuracy of CUS+S-detect was higher than that of CUS (P<0.05). The diagnostic specificity of CUS+VTIQ was higher than that of CUS (P<0.05). The diagnostic accuracy and AUC of CUS+S-detect+VTIQ were higher than those of S-detect or VTIQ applied to CUS alone (P<0.05). The sensitivities of CUS for senior radiologists, CUS for junior radiologists, CUS+S-detect+VTIQ for senior radiologists, and CUS+S-detect+VTIQ for junior radiologists were 60.00%, 80.00%, 72.73%, and 90.00%, respectively, when diagnosing benign and malignant breast masses in 50 randomly selected cases. The specificities for them was 66.67%, 76.67%, 80.00%, and 81.25%, respectively. The accuracies for them was 64.00%, 78.00%, 80.00%, and 88.00%, respectively. The AUCs for them were 0.63, 0.78, 0.88, and 0.80, respectively. Compared with the CUS for junior radiologists, the CUS+S-detect+VTIQ for junior radiologists had higher sensitivity, specificity, and accuracy (all P<0.05). The consistency of the combined application of S-detect and VTIQ for diagnosing breast masses at 2 different times was good among junior radiologists (Kappa=0.800). METHODS: CUS, S-detects, and VTIQ were used to differentially diagnose benign and malignant breast masses in 108 cases, and the final pathological results were referred to as the gold standard for classifying breast masses. The diagnostic efficacy were evaluated and compared, among the 3 methods and among S-detect applied to CUS (CUS+S-detect), VTIQ applied to CUS (CUS+VTIQ), and S-detect combined with VTIQ applied to CUS (CUS+S-detect+VTIQ). Fifty cases were acquired randomly from the collected breast masses, and 2 radiologists with different years of experience (2 and 8 years) used S-detect combined with VTIQ for the ultrasonic differential diagnosis of benign and malignant breast masses. RESULTS: The differences in sensitivity, specificity, accuracy, and the area under the receiver operating characteristic curve (AUC) of the 3 diagnostic methods of CUS, S-detect, and VTIQ were not statistically significant (all P>0.05). The sensitivities of CUS, CUS+Sdetect, CUS+VTIQ, and CUS+S-detect+VTIQ were 78.57%, 92.86%, 69.05%, and 95.24%, respectively, the specificities for them were 69.70%, 78.79%, 87.88%, and 92.42%, respectively, the accuracies for them were 73.15%, 84.26%, 80.56%, and 93.52%. CONCLUSIONS S-detect combined with VTIQ when applied to CUS can overcome the shortcomings of separate applications and complement each other, especially for junior radiologists, and can more effectively improve the diagnostic efficacy of ultrasound for benign and malignant breast masses.
Artificial Intelligence ; Breast/diagnostic imaging* ; Diagnosis, Differential ; Elasticity Imaging Techniques/methods* ; Humans ; Ultrasonography/methods*

Objective To evaluate the incidence, prognosis and influencing factors of lower cranial nerve palsy after microvascular decompression (MVD) in patients with hemifacial spasm (HFS). Methods Clinical data of 1033 patients with HFS, admitted to our hospital from May 2014 to August 2016, were retrospectively analyzed. The incidence of lower cranial nerve palsy after procedure and prognosis of these patients were summarized; and influencing factors were analyzed by statistical method. Results In 1033 patients with HFS, 10 patients (0.97％) had lower cranial nerve palsy after procedure: 6 patients suffered hoarseness, 2 patients suffered dysphasia, and 2 patients were with both symptoms; the symptoms in 6 patients completely recovered within one month, 2 patients within one-3 months, and 2 patients within 3-6 months. No permanent low cranial nerve palsy occurred. There were no statistical significances in age, gender, clinical course, sides, or the types of offending vessels between the lower cranial nerve palsy patients (n=10) and the non-palsy patients (n=1023)(P>0.05). Conclusion Lower cranial nerve palsy is a rare complication after MVD, and type of responsible vessels is not a influencing factor in this complication

Objective:To examine the role of LY294002 in cardiac function and myocardial structure in dilated cardiomyopathy (DCM) rats.Methods:Fifty-two male SD rats were randomly assigned to a control group (n=16) and a DCM group (n=36).The DCM rats were induced by intraperitoneal injection of adriamycin,and the control rats were given normal saline.After observation for 2 weeks,6 rats from each group were killed randomly.In the end of the 8th week,the 24 DCM rats were randomly assigned to a DCM group (n=12) and a LY294002 group (n=12),which were given normal saline and LY294002,respectively.In the end of the 8th week and 16th week,the cardiac function was analyzed by ultrasonic cardiogram (UCG) and the plasma was collected to test the level of N-terminal pro-brain natriuretic peptide (NT-pro BNP).HE and Van Gieson (VG) staining were performed to calculate the collagen volume fraction (CVF).Results:Compared with the control group,the left ventricular end-diastolic dimension (LVEDD),left ventricular end-systolic dimension (LVESD) and NT-proBNP level of in the DCM rats were increased obviously,while the left ventricular ejection fraction (LVEF),left ventricular fractional shortening (LVFS) in the DCM rats were decreased obviously (P＜0.01).These changes were consistent with DCM characteristics.Compared with the DCM group,the LVEDD,LVESD and NT-proBNP levels in the LY294002 group were decreased,while the LVEF and LVFS were increased (P＜0.05).Histopathology showed that the myocardium in the DCM rats was fibrotic and the CVF was increased compared with the control rats (P＜0.01).The myocardial structure was improved in the LY294002 group compared to the DCM group.Conclusion:LY294002 can reduce the myocardial fibrosis in the DCM rats and improve the cardiac function.

To evaluate the value of automatic breast volume scanner (ABVS) and mammography (MG) in differential diagnosis for small breast lesions with breast imaging reporting and data system ultrasound (BI-RADS-US) 4.
 Methods: ABVS and MG were performed for 103 patients with 109 breast lesions, which were classified as BI-RADS-US 4 by conventional ultrasound (US). Postoperative pathological diagnosis served as gold standard. The diagnostic efficacy for US, US combined with MG, US combined with ABVS and the combination of three methods were compared.
 Results: The sensitivity of US, US combined with MG, US combined with ABVS and the combination of three methods were 85.5%, 86.8%, 94.7% and 96.0%, respectively. The specificity for them were 66.7%, 69.7%, 81.8% and 84.9%, respectively. The accuracy for them were 79.8%, 81.6%, 90.8% and 92.7%, respectively. The area under the receiver operating characteristic (ROC) curve (AUC) for them were 0.76, 0.78, 0.88 and 0.90, respectively. The accuracy and AUC for US combined with ABVS in differential diagnosis of BI-RADS-US 4 small breast lesions were significantly higher than those of US and US combined with MG (P<0.05). There was no significant difference in sensitivity and specificity among these 3 groups (P>0.05). No significant difference was found in sensitivity, specificity, accuracy, and AUC between US combined with ABVS and the combination of three methods (P>0.05).
 Conclusion: Combination of US with ABVS can improve the diagnostic efficacy of conventional US in differential diagnosis for BI-RADS-US 4 small breast lesions, and it is superior to US combined with MG.
Breast ; diagnostic imaging ; Breast Neoplasms ; diagnostic imaging ; Female ; Humans ; Mammography ; Reproducibility of Results ; Sensitivity and Specificity ; Ultrasonography, Mammary

Objective To investigate the perioperative complications of stenting with symptomatic intracra-nial artery stenosis and study the mechanism and prevention of complications. Methods 63 patients were collect-ed from Stroke Center of Guangxi. They were proved intracranial artery stenosis and performed intracranial stents. Patients′ age,with hypertension,diabetes and hyperlipidemia or not,smoking or not,types and occurrence time of complications were registered. Results 63 patients were registered and 2 patients terminated operation due to blood vessels circuity or serious vessel spasm. Operation success rate reached 96.83％. 5 patients had complications among 63 cases,with complication incidence of 8.20％. 3 patients experienced cerebral hemorrhage and two cere-bral infarction in peri-operation period. 2 patients died of complications and mortality rate was 3.28％. Conclu-sions The incidence rate of complications of intracranial stenting with symptomatic intracranial artery stenosis is relatively high and it can be reduced by preoperative sufficient assessment and prudent selection ,careful operation and strict management after operation.

Summarize the application of SOAP in the medical field and find out its problems in the course of traditional Chinese medicine, to explore the significance and value of SOAP in teaching practice in TCM. Organize relevant literature and discuss the application of SOAP in the course of Chinese medicine. SOAP is widely used in various aspects of medicine, and there are still some problems in the course of TCM. The use of SOAP model for teaching and assessment has important practical significance and value in the course of Chinese medicine internal medicine practice, and SOAP emphasize the practice of the post competence oriented teaching, which is worth promoting.