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61篇 您的检索式:作者名="Ximena"
    题名 作者 年代 出处 被引量
1High-frequency ultrasound features of basal cell carcinoma and its association with histological recurrence risk显示文摘Background: Due to advances in high-frequency ultrasound technology, it is easier to detect fine structures of skin lesions. The aim of this study was to examine the ultrasonographic features and use recurrence risk stratification to assess the diagnostic performance of pre-operative ultrasound examination of basal cell carcinoma (BCC). Methods: This was a retrospective study. Forty-six BCC lesions underwent pre-operative ultrasound examination using 50- and 20- MHz probes. Ultrasonographic shape, margin, internal echoes, hyper-echoic spots, posterior echoes, and depth of the lesion were evaluated and correlated with the risk of recurrence based on histological features. Results: Forty-two patients had 46 skin lesions in total. The high-risk (n = 6) and low-risk (n = 40) groups exhibited considerable overlap in the ultrasonographic manifestations and no significant difference in margin (χ^2 = 3.231, P = 0.072), internal echo (χ^2 = 1.592, P = 0.207), or posterior echo (P = 0.169). However, high-risk BCCs tended to be irregular in shape than low-risk lesions (χ^2 = 4.313, P = 0.038). Both types presented hyper-echoic spots (χ^2 = 1.850, P = 0.174). Additionally, 78% of low-risk lesions were confined to the dermis (31/40), and 100% of high-risk lesions infiltrated into the sub-cutaneous tissue, resulting in a significant difference between the two groups (χ^2 = 10.951, P = 0.001). Ultrasound detected sub-clinical lesions in five patients. Conclusions: High-frequency ultrasound can provide important information for pre-operative evaluation of risk in BCC foci and reveal hidden lesions. The technique may play a crucial role in guiding therapeutic options for BCC.Shi-Qi Wang Jie Liu Qing-Li Zhu Chen-Yang Zhao Tao Qu Feng Li Ximena Wortsman Hong-Zhong Jin 2019Chinese Medical Journal2019,,17:12
2Expression of HER2 and bradykinin B_1 receptors in precursor lesions of gallbladder carcinoma显示文摘AIM:To determine the expression of HER2 and bradykinin B 1 receptors(B 1 R) in the two pathogenic models of gallbladder cancer:the metaplasia-dysplasia-carcinoma and the adenoma-carcinoma pathways.METHODS:Receptor proteins were visualized by immunohistochemistry on 5-μm sections of paraffin-embedded tissue.Expression of both receptors was studied in biopsy samples from 92 patients(6 males and 86 females;age ranging from 28 to 86 years,mean 56 years).High HER2 expression in specimens was additionally investigated by fluorescence in situ hybridiza-tion.Cell proliferation in each sample was assessed by using the Ki-67 proliferation marker.RESULTS:HER2 receptor protein was absent in adenomas and in normal gallbladder epithelium.On the contrary,there was intense staining for HER2 on the basolateral membrane of epithelial cells of intestinal metaplasia(22/24;91.7%) and carcinoma in situ(9/10;90%),the lesions that displayed a significantly high proliferation index.Protein up-regulation of HER2 in the epithelium with metaplasia or carcinoma in situ was not accompanied by HER2 gene amplification.A similar result was observed in invasive carcinomas(0/12).The B 1 R distribution pattern mirrored that of HER2 except that B 1 R was additionally observed in the adenomas.The B 1 R appeared either as cytoplasmic dots or labeling on the apical cell membrane of the cells composing the epithelia with intestinal metaplasia(24/24;100%) and carcinoma in situ(10/10;100%) and in the epithelial cells of adenomas.In contrast,both HER2(4/12;33%) and B 1 R(1/12;8.3%) showed a low expression in invasive gallbladder carcinomas.CONCLUSION:The up-regulation of HER2 and B1R in precursor lesions of gallbladder carcinoma suggests cross-talk between these two receptors that may be of importance in the modulation of cell proliferation in gallbladder carcinogenesis.Cesar Toledo Carola E Matus Ximena Barraza Pamela Arroyo Pamela Ehrenfeld Carlos D Figueroa Kanti D Bhoola Maeva del Pozo Maria T Poblete 2012World Journal of Gastroenterology2012,18,11:6
3手术范围对膝关节术后纤维化形成的影响显示文摘膝关节纤维化是术后常见的并发症,为影响手术疗效的关键因素之一,常引起关节活动度降低、慢性关节痛、软骨损伤以及关节废用性病变,严重降低了患者的生活质量。因此,如何降低术后膝关节纤维化的发生是提高手术预期疗效的关键,也是临床医学上需要亟待解决的重要问题。笔者团队结合自身前期及最新的研究发现,膝关节纤维化的程度与手术范围大小有重要的关联,利用微创和关节镜方法治疗膝关节三室内的疾病可有效减少滑膜、软骨和脂肪垫组织的损伤,同时结合术后早期康复训练是未来预防术后膝关节纤维化的有效手段。吴海啸 Karen A.Egiazaryan Andrei Р.Ratyev Guram D.Lazishvili Ximena A.Sanchez Sanchez 张超 2018中国骨伤2018,31,6:4
4接受他汀治疗患者新发糖尿病风险:人群为基础的研究显示文摘目的 研究接受HMG-CoA还原酶抑制剂(他汀类药物)治疗的患者的新发糖尿病风险。设计 人群为基础的队列研究,以时间事件分析的方法评估各种他汀类药物应用和新发糖尿病风险的相关性分析。计算危害比(hazard ratios,HR)来确定他汀的种类及剂量与新发糖尿病的关系。Aleesa A Caner Tara Gomes Ximena Camacho David N Juurlink Baiju R Shah Muhammad M Mamdani 张秀珍(译) 骆斯慧(译) 翁建平(校) 2013英国医学杂志中文版2013,16,5:2
5Vocal repertoire of the New Zealand kea parrot Nestor notabilis显示文摘Raoul SCHWING Stuart PARSONS Ximena J. NELSON 2012Current Zoology2012,58,5:2
6Comparison of lipid extraction methods for the microalgae Acutodesmus obliquus显示文摘Microalgae are widely used in the pharmaceutical and energy industries,therefore the conditions for their cultivation and extraction methods play an important role in the profiling and acquisition of lipids.The efficiency of lipid extraction from microalgae has attracted great interest from industry because of the wide variety of lipids and amounts that can be obtained.Acutodesmus obliquus(Scenedesmus obliquus UTEX 393)was used in this study.It was cultivated in Bold 3N medium modified with 75%nitrogen at 25℃,pH 6.8,125 r/min and a photoperiod of 18/6 h and illuminated with white light provided by a Light-Emitting Diode Surface Mount Device extensions(LED SMD)with an intensity of 1200μE/(m^(2)·s).The cells were stained with the Red Nile(RN)technique to indicate lipid production.Four extraction methods were compared,classical,microwave(MW),Soxhlet,and ultrasound(US),using the same solvent proportions(hexane:chloroform:methanol=1:2:3).All samples were analyzed with Fourier Transform Infrared Spectroscopy(FTIR)and Gas Chromatography coupled to Mass Spectrometry(GC-MS).The results showed:1)lipid production detected by RN was consistent with microalgal growth;2)the MW technique was the best extraction method,according to the statistical analysis through Randomized Complete Block(RCB)design and performance of 4.6%;and 3)the presence of saturated and unsaturated acids was indicated by FTIR spectra.GC-MS was able to identify palmitic and linoleic acids as the likely major constituents of the sample.Diana Ximena Hurtado Claudia Lorena Garzón-Castro Jhon Cortés-Romero Edisson Tello Camacho 2018International Journal of Agricultural and Biological Engineering2018,11,5:2
7Grape-seed procyanidins prevent low-grade inflammation by modulating cyto- kine expression in rats fed a high-fat diet显示文摘Ximena Terra Gemma Montagut Mario Bustos 2009Journal of Nutritional Biochemistry2009,20,:1
8Tr- ansglutaminase effects on gelation capacity of thermally induced beef protein gels显示文摘Marta Dondero Valeria Figueroa Ximena Morales EmiliaCurotto 2006Food chemistry2006,,99:1
9Critically ill patients with cancer: A clinical perspective显示文摘Cancer patients account for 15%of all admissions to intensive care unit(ICU)and 5%will experience a critical illness resulting in ICU admission.Mortality rates have decreased during the last decades because of new anticancer therapies and advanced organ support methods.Since early critical care and organ support is associated with improved survival,timely identification of the onset of clinical signs indicating critical illness is crucial to avoid delaying.This article focused on relevant and current information on epidemiology,diagnosis,and treatment of the main clinical disorders experienced by critically ill cancer patients.Frank Daniel Martos-Benítez Caridad de Dios Soler-Morejón Karla Ximena Lara-Ponce Versis Orama-Requejo DailéBurgos-Aragüez Hilev Larrondo-Muguercia Rahim W Lespoir 2020World Journal of Clinical Oncology2020,11,10:1
10Steam gasification of tars using a CaO catalyst 显示文摘Ximena A G Nelson A AAlfredo LG 1999Fuel Processing Technology1999,58,23:1
11Coal blend combustion: Link between unbumt carbon in fly ashes and maceral composition显示文摘SONIA H ALFREDO G GUILLERMO A XIMENA G CLAUDIA U 2003Fuel Process Technol2003,80,3:1
12High blood pressure in school children:prevalence and risk factors显示文摘Ximena Urrutia-Rojas Christie U Egbuchunam Sejong Bae 2006BMC Pediatrics2006,6,:1
13Psychological state estimation from physiological recordings during robot-assisted gait rehabilitation 显示文摘Alexander Koenig Ximena 2011Journal of Rehabilitation Research and Development2011,48,4:1
14Activity assessment in morphea using color Doppler ultrasound显示文摘Ximena W Jacobo W Lvo S 2011Joumal of the American Academy of Dermatology2011,65,5:1
15Fe-doped titanium dioxide synthesized: Photocatalytic activity and mineralization study for azo dye显示文摘Ximena Vargas Elias Tauchert Juan-Miguel Marin Gloria Restrepo Ralf Dillert Detlef Bahnemann 2012Journal of Photochemistry & Photobiology A: Chemistry2012,,:1
16Transglutaminase effects on gelation capacity of thermally induced beef protein gels显示文摘Marta Dondero Valeria Figueroa Ximena Morales 2006Food Chemistry2006,,99:1
17Pro- gression of leprosy neuropathy: a case series study 显示文摘Robson T Vital Ximena Illarramendi Osvaldo Nascimento 2012Brain Behav2012,2,3:1
18Seroprevalencia de rinotraqueitis infecciosa bovina en hatos lecheros de Toca-Boyaea 显示文摘Ochoa Ximena Orbegozo Marcela Manrique-Abril Fred 2012Revista MVZ C6rdoba2012,,17:1
19How spiders practice aggressive and Batesian mimicry显示文摘Ximena J. NELSON Robert R. JACKSON 2012Current Zoology2012,58,4:1
20Carrier-Induced, Hapten-Specific Suppression: A Problem of Antigen Presentation显示文摘Ximena R Stanley W 1998The Journal of Immunology1998,161,:1
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