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Effects of Norepinephrine on Renal Cortical and Medullary Blood Flow in Atherosclerotic Rabbits

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Current Medical Science 2022年第6期42卷 1172-1177页

作者： Jia-yu wang Jie SUN You-bin DENG yu-bo wang Kun LIU Department of Medical Ultrasound Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan430030China Department of Medical Ultrasound Maternal and Child Healthcare Hospital of Hubei ProvinceTongji Medical CollegeHuazhong University of Science and TechnologyWuhan430064China Department of Medical Ultrasound The Third People’s Hospital of Hubei ProvinceWuhan430030China

Objective The aim of this study was to explore the effect of norepinephrine(NE)on renal cortical and medullary blood flow in atherosclerotic rabbits without renal artery *** Atherosclerosis was induced in 21 New Zealand white rabbits by feeding them a cholesterol-rich diet for 16 *** healthy New Zealand white rabbits were randomly selected as *** atherosclerosis induction,standard ultrasonography was performed to confirm that there was no plaque or accelerated flow at the origin of the renal ***-enhanced ultrasound(CEUS)was performed at baseline and during intravenous injection of *** degree of contrast enhancement of renal cortex and medulla after the injection of contrast agents was quantified by calculating the enhanced *** The serum nitric oxide(NO)level in atherosclerotic rabbits was higher than that in healthy rabbits(299.6±152 vs.136.5±49.5,P<0.001).The infusion of NE induced a significant increase in the systolic blood pressure(112±14 mmHg vs.84±9 mmHg,P=0.016)and a significant decrease in the enhanced intensity in renal cortex(17.78±2.07 dB vs.21.19±2.03 dB,P<0.001)and renal medulla(14.87±1.82 dB vs.17.14±1.89 dB,P<0.001)during ***,the enhanced intensity in the cortex and medulla of healthy rabbits after NE infusion showed no significant difference from that at *** NE may reduce renal cortical and medullary blood flow in atherosclerotic rabbits without renal artery stenosis,partly by reducing the serum NO level.

关键词： norepinephrine atherosclerosis contrast-enhanced ultrasound renal blood flow

Neurocutaneous melanosis with an intracranial cystic-solid meningeal melanoma in an adult:A case report and review of literature

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World Journal of Clinical Cases 2022年第15期10卷 5025-5035页

作者： bo-Chuan Liu yu-bo wang Zhuang Liu Yan Jiao Xian-Feng Zhang Department of Neurosurgery The Second Affiliated Hospital of Xi'an Medical UniversityXi'an 710038Shaanxi ProvinceChina Department of Neurosurgery First Hospital of Jilin UniversityChangchun 130021Jilin ProvinceChina Department of Neurosurgery Dongfeng County HospitalLiaoyuan 136300Jilin ProvinceChina Department of Hepatobiliary and Pancreatic Surgery First Hospital of Jilin UniversityChangchun 130021Jilin ProvinceChina

BACKGROUND Neurocutaneous melanosis(NCM)is a rare congenital,nonhereditary neurocutaneous syndrome that mainly occurs in children;adult NCM is very *** to its rarity,the clinical features and treatment strategies for NCM remain *** purpose of this study was to explore the clinical features,diagnosis,treatment and prognosis of NCM in *** intracranial meningeal melanomas are solid masses,and cystic-solid malignant melanomas are very *** to the lack of data,the cause of cystic changes and the effect on prognosis are *** SUMMARY A 41-year-old woman was admitted to the hospital with intermittent headache for 1 *** resonance imaging(MRI)showed a 4.7 cm×3.6 cm cystic-solid mass in the left temporal lobe with peritumoral *** entire mass was removed,and postoperative pathology indicated malignant *** MRI is the first-choice imaging approach for diagnosing central nervous system diseases in NCM patients,although cerebrospinal fluid may also be *** present,there is no optimal treatment plan;gross total resection combined with BRAF inhibitors and MEK inhibitors might be the most beneficial treatment.

关键词： Neurocutaneous melanosis Meningeal melanoma Central nervous system disease Adult Cystic-solid tumor Case report

Primary intracranial extraskeletal myxoid chondrosarcoma:A case report and review of literature

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World Journal of Clinical Cases 2022年第13期10卷 4301-4313页

作者： Zi-You Zhu yu-bo wang Han-Yi Li Xin-Min Wu Department of Neurosurgery The First Hospital Affiliated to Jilin UniversityChangchun 130021Jilin ProvinceChina Department of Orthodontics Hospital of Stomatology of Jilin UniversityChangchun 130021Jilin ProvinceChina

BACKGROUND Primary intracranial extraskeletal myxoid chondrosarcoma(EMC)is an extremely rare low-to intermediate-grade malignant soft tissue sarcoma,and only 15 cases have been reported in the *** to its rarity,clinical data and research on this tumor type are extremely limited,the pathogenesis and histological origin are still unclear,and the diagnostic and standard clinical treatment strategies for intracranial EMC remain controversial and *** SUMMARY We reported a case of a 52-year-old male who was admitted to the hospital with headache and dizziness for 1 mo,and his health status deteriorated during the last *** of the head showed a well-defined low-density lesion situated in the left cavernous *** magnetic resonance imaging(MRI)showed a 3.4 cm×3.0 cm sized,well-defined,round-shaped and heterogeneously enhanced lesion located in the left cavernous *** entire lesion was removed via supratentorial craniotomy and *** pathological diagnosis indicated primary intracranial ***,the patient underwent 45 Gy/15 F stereotactic radiotherapy after *** present,it is 12 mo after surgery,with regular postoperative follow-up and regular MRI examinations,that there are no clinical symptoms and radiographic evidence indicating the recurrence of the tumor,and the patient has returned to normal *** Currently,the most beneficial treatment for primary intracranial EMC is gross total resection combined with postoperative ***-term follow-up is also necessary for patients.

关键词： Extraskeletal myxoid chondrosarcoma Primary intracranial neoplasm Soft tissue sarcoma Surgery Radiotherapy Case report

Corrosion resistance of an amino acid-bioinspired calcium phosphate coating on magnesium alloy AZ31

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Journal of Materials Science & Technology 2020年第14期47卷 224-235页

作者： Xiao-Li Fan Chang-Yang Li yu-bo wang yuan-Fang Huo Shuo-Qi Li Rong-Chang Zeng Corrosion Laboratory for Light Metals College of Materials Science and EngineeringShandong University of Science and TechnologyQingdao 266590China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450002China

An L-cysteine-bioinspired calcium phosphate(Ca-P)coating is prepared upon magnesium alloy AZ31 in a water bath at 60℃.FE–SEM,FTIR,XRD,electrochemical characterization,hydrogen evolution tests and XPS were used to evaluate the microstructure,chemistry and corrosion performance of the *** indicate that L-cysteine promotes the nucleation process of the coating and significantly increases its *** can be attributed to the complexation of the carboxyl group and mercapto group of L-cysteine with calcium ***,the obtained Ca-P coating possesses higher corrosion resistance than that prepared in L-cysteine-free bath.

关键词： Magnesium alloys Phosphate Coating Corrosion resistance Amino acid

Stress Measurement with an Improved Hollow Inclusion Technique In Jinchuan Nickel Mine

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International Journal of Minerals,Metallurgy and Materials 2000年第3期14卷 157-160页

作者： Meifeng Cai, Lan Qiao, bo yu, Shuanghong wang (Resources Engineering School, University of Science and Technology Beijing, Beijing 100083) Resources Engineering School University of Science and Technology Beijing Beijing 100083 China

borehole overcoring stress measurement with an improved hollow inclusion technique was carried out at 10 points on 3 levels in Jinchuan nickel mine which is situated in north-west of China. Through the measurement, 3-D in situ stress state at the measuring points and distribution characteristics of the stress field in the mine were obtained. The stress state in Jinchuan mine is dominated by the horizontal tectonic stress field. The maximum principal stress is horizontal which is about twice the weight of the overburden and its orientation is approximately vertical to the regional tectonic line. The difference between two horizontal principal stresses is quite large which is an important reason to cause failure of underground excavations.

关键词： stress measurement overcoring technique hollow inclusion cell improvement Jinchuan nickel mine

Coexistent vestibular schwannoma and meningioma in a patient without neurofibromatosis:A case report and review of literature

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World Journal of Clinical Cases 2021年第24期9卷 7251-7260页

作者： Li-Yan Zhao Yi-Ning Jiang yu-bo wang Yang Bai Ying Sun yun-Qian Li Department of Clinical Laboratory Second Hospital of Jilin UniversityChangchun 130041Jilin ProvinceChina Department of Neurosurgery First Hospital of Jilin UniversityChangchun 130021Jilin ProvinceChina

BACKGROUND The simultaneous occurrence of schwannoma and meningioma in the absence of neurofibromatosis(NF)or a previous history of irradiation is exceedingly rare,as only 10 intracranial cases have been reported to ***,we report a case of a coexistent cavernous sinus meningioma and ipsilateral vestibular schwannoma(VS)in a female patient without NF or a history of exposure to *** SUMMARY A 63-year-old woman presented with progressive left-side hearing loss and tinnitus over the previous *** the past 6 mo,she developed facial numbness and intermittent *** resonance imaging showed two lesions that were located on the left side of the cerebellopontine angle and parasellar *** lesions were totally resected via the left retrosigmoid *** examination revealed a VS and a *** patient did not have a family history or clinical or radiological signs of *** The coincident occurrence of VS and meningioma within close vicinity is very rare,and the pathogenesis is unclear.A careful whole-body examination needs to be conducted to exclude *** treatment with the goal of total tumor resection is the best *** studies are needed for a better understanding of the mechanisms that lead to the development of tumor growth in multiple locations.

关键词： Concurrent Diagnosis Meningioma Neurofibromatosis Schwannoma Case report

Hyperprolactinemia due to pituitary metastasis: A case report

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World Journal of Clinical Cases 2021年第1期9卷 190-196页

作者： Chun-Yang Liu yu-bo wang Hui-Qin Zhu Jin-Liang You Zhuang Liu Xian-Feng Zhang Department of Neurosurgery First Hospital of Jilin UniversityChangchun 130021Jilin ProvinceChina Department of Respiratory medicine First Hospital of Jilin UniversityChangchun 130021Jilin ProvinceChina Department of Neurosurgery Linyi Cancer HospitalLinyi 276000Shandong ProvinceChina

BACKGROUND Pituitary metastasis is an uncommon manifestation of systemic malignant ***,hyperprolactinemia and overall hypopituitarism caused by metastatic spread leading to the initial symptoms are *** SUMMARY A 53-year-old male patient was admitted to our hospital with complaints of bilateral blurred vision,dizziness,polyuria,nocturia,severe fatigue and somnolence,decreased libido,and intermittent nausea and vomiting for more than 6 *** the last 7 d,the dizziness had *** investigations revealed overall hypofunction of the pituitary gland,but the patient had an elevated serum prolactin level(703.35 mg/mL).Preoperative magnetic resonance imaging revealed a tumor in the sellar region,accompanied by intratumoral hemorrhage and ***,transnasal subtotal resection of the lesion in the sellar region was *** histopathological and immunohistochemical examinations of the resected lesion revealed metastasis of lung adenocarcinoma to the pituitary *** hydrocortisone(30 mg/d)and levothyroxine(25 mg/d)were given both pre-and ***,the clinical symptoms were significantly ***,4 mo following the surgery,the patient succumbed due to multiple organ *** Hyperprolactinemia is one of the markers of poor prognosis in patients with carcinoma that metastasizes to the pituitary *** hormone supplementation plays a positive role in relieving the symptoms of patients and improving quality of life.

关键词： Hyperprolactinemia Neoplasm metastasis Pituitary neoplasms Diagnosis Treatment Case report

Evaluation of Left Ventricular Function by Three-Dimensional Speckle-Tracking Echocardiography in Patients with Chronic Kidney Failure

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Current Medical Science 2022年第4期42卷 895-901页

作者： yu-bo wang Hui HUANG Shan LIN Mei-jia HAO Lu-jiao HE Kun LIU Xiao-jun BI Department of Ultrasound Third People's Hospital of Hubei ProvinceJianghan UniversityWuhan 430033China Department of Ultrasound Maternal and Child Health Hospital of Hubei ProvinceTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430070China Department of Ultrasound Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China

Objective:To establish a quantitative evaluation of the left ventricle's systolic function in patients with chronic kidney failure(CKF)by three-dimensional speckle-tracking ***:Two-dimensional and three-dimensional transthoracic echocardiography was performed on 30 patients with *** ejection fraction,mass and global peak longitudinal strain,global circumferential strain,global area strain,and global radial strain of the left ventricle were ***:The ejection fraction,mass and global peak longitudinal strain(GLS),global circumferential strain(GCS),global area strain(GAS),and global radial strain(GRS)in the CKF group were significantly lower than those in the control ***,the GLS,GCS,GAS and GRS were well correlated with the ejection *** patients with normal ejection fraction in the CKF group,the GLS,GCS,GAS and GRS were lower than those in the control group,while the left ventricular mass was significantly higher in CKF patients than in the control *** patients with hypertension in the CKF group,ejection fraction,GLS,GCS,GAS and GRS calculated using three-dimensional echocardiography were significantly lower than those in patients with normal blood pressure;however,the myocardial mass was ***:The parameters(GLS,GCS,GAS and GRS)calculated using three-dimensional speckle-tracking software were lower in the CKF ***,the left ventricular mass was higher in CFK patients than in the control group,thus showing that the myocardial contraction function was impaired and that myocardial remodeling had occurred.

关键词： three-dimensional speckle-tracking echocardiography left ventricle ejection fraction strain chronic kidney failure

GFRF R-CNN:Object Detection Algorithm for Transmission Lines

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Computers, Materials & Continua 2025年第1期82卷 1439-1458页

作者： Xunguang Yan Wenrui wang Fanglin Lu Hongyong Fan bo Wu Jianfeng yu Shanghai Advanced Research Institute Chinese Academy of SciencesShanghai201210China University of Chinese Academy of Sciences Beijing100049China Jingwei Textile Machinery Co. Ltd.Beijing100176China

To maintain the reliability of power systems,routine inspections using drones equipped with advanced object detection algorithms are essential for preempting power-related *** increasing resolution of drone-captured images has posed a challenge for traditional target detection methods,especially in identifying small objects in high-resolution *** study presents an enhanced object detection algorithm based on the Faster Regionbased Convolutional Neural Network(Faster R-CNN)framework,specifically tailored for detecting small-scale electrical components like insulators,shock hammers,and screws in transmission *** algorithm features an improved backbone network for Faster R-CNN,which significantly boosts the feature extraction network’s ability to detect fine *** Region Proposal Network is optimized using a method of guided feature refinement(GFR),which achieves a balance between accuracy and *** incorporation of Generalized Intersection over Union(GIOU)and Region of Interest(ROI)Align further refines themodel’s *** results demonstrate a notable improvement in mean Average Precision,reaching 89.3%,an 11.1%increase compared to the standard Faster *** highlights the effectiveness of the proposed algorithm in identifying electrical components in high-resolution aerial images.

关键词： Faster R-CNN transmission line object detection GIOU GFR