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11244篇 您的检索式:作者名="THOMAS M M"
    题名 作者 年代 出处 被引量
1沙漠-绿洲过渡带四种多年生植物水分关系特征显示文摘沙漠 -绿洲过渡带地区植被的可持续性在防止绿洲沙漠化的过程中非常重要。对过渡带主要植物种骆驼刺 (Alhagisparsifolia Shap)、多枝柽柳 (Tamarix ramosissima L ebed.)、胡杨 (Populus euphratica Oliv.)和头状沙拐枣 (Calligonum caput-medusae Schrenk.)水分关系的研究表明 :4种植物的水分恢复状况良好 ,清晨水势一直较高 ,水分亏缺并不严重。渗透势和正午水势的降低幅度不大 ,变化比较平稳 ,更像是一种生长过程中的结果 ,植物的水分胁迫状况并不明显。 4种植物的水势和渗透势都高于典型的荒漠植物 ,属于中生植物的范围。水分参数的变化显示在同样的环境节律下 ,四种植物在水分生理的变化特征上有一致性。一直很高的 RWCp 值表明植物不能适应剧烈的水分损失和较低的水分含量 ,植物需要稳定充足的水分供应来适应塔克拉玛干极端气候条件下的生长环境。植物对环境胁迫也有各自不同的生理适应特点 ,胡杨的ΔΠ值大 ,能忍受较多的水分损失维持气孔的开放 ;骆驼刺的Ψp 值最高 ,水分亏缺的平衡与恢复效果明显 ;C4 植物头状沙拐枣能维持较高的水势和渗透势 ,而盐土植物多枝柽柳能忍受水势的很大降低。夏季一次性灌溉对骆驼刺、多枝柽柳和胡杨水分状况的改善基本没有影响 ,对头状沙拐枣有一定的帮助。植物?李向义 张希明 何兴元 曾凡江 Andrea FOETZKI Frank M THOMAS 2004生态学报2004,24,6:49
2Diabetes and cardiovascular disease: Epidemiology, biological mechanisms, treatment recommendations and future research显示文摘The incidence of diabetes mellitus(DM) continues to rise and has quickly become one of the most prevalent and costly chronic diseases worldwide. A close link exists between DM and cardiovascular disease(CVD), which is the most prevalent cause of morbidity and mortality in diabetic patients. Cardiovascular(CV) risk factors such as obesity, hypertension and dyslipidemia are common in patients with DM, placing them at increased risk for cardiac events. In addition, many studies have found biological mechanisms associated with DM that independently increase the risk of CVD in diabetic patients. Therefore, targeting CV risk factors in patients with DM is critical to minimize the long-term CV complications of the disease. This paper summarizes the relationship between diabetes and CVD, examines possible mechanisms of disease progression, discusses current treatment recommendations, and outlines future research directions.Benjamin M Leon Thomas M Maddox 2015World Journal of Diabetes2015,6,13:39
3Obstructive jaundice due to hepatobiliary cystadenoma or cystadenocarcinoma显示文摘Hepatobiliary cystadenomas (HBC) and cystadenocarci- nomas are rare cystic lesions. Most patients with these lesions are asymptomatic, but presentation with ob- structive jaundice may occur. The first patient presented with intermittent colicky pain and recurrent obstructive jaundice. Imaging studies revealed a polypoid lesion in the left hepatic duct. The second patient had recurrent jaundice and cholangitis. Endoscopic retrograde cholan- giopancreatography (ERCP) showed a cystic lesion at the confluence of the hepatic duct. In the third patient with intermittent jaundice and cholangitis, cholangioscopy re- vealed a papillomatous structure protruding into the left bile duct system. In the fourth patient with obstructive jaundice, CT-scan showed slight dilatation of the intrahe- patic bile ducts and dilatation of the common bile duct of 3 cm. ERCP showed filling of a cystic lesion. All patients underwent partial liver resection, revealing HBC in the specimen. In the fifth patient presenting with obstructive jaundice, ultrasound examination showed a hyperecho- genic cystic lesion centrally in the liver. The resection specimen revealed a hepatobiliary cystadenocarcinoma. HBC and cystadenocarcinoma may give rise to obstruc- tive jaundice. Evaluation with cross-sectional imaging techniques is useful. ERCP is a useful tool to differentiate extraductal from intraductal obstruction.Deha Erdogan Olivier RC Busch Erik AJ Rauws Otto M van Delden Dirk J Gouma Thomas M van Gulik 2006World Journal of Gastroenterology2006,12,35:26
4Long-term outcome and prognostic factors of patients with hilar cholangiocarcinoma显示文摘AIM: To evaluate the long-term outcome and prognostic factors of patients with hilar cholangiocarinoma. METHODS: Ninety-six consecutive patients underwent treatment for malignant hilar bile duct tumors during 1995–2005. Of the 96 patients, 20 were initially treated with surgery (n = 2 R0 / n = 18 R1). In non-operated patients, data analysis was performed retrospectively. RESULTS: Among the 96 patients, 76 were treated with endoscopic transpapillary (ERC, n = 45) and/or percutaneous transhepatic biliary drainage (PTBD, n = 31). The mean survival time of these 76 patients undergoing palliative endoscopic and/or percutaneous drainage was 359 ± 296 d. The mean survival time of patients with initial bilirubin levels > 10 mg/dL was significantly lower (P < 0.001) than patients with bilirubin levels < 10 mg/dL. The mean survival time of patients with Bismuth stage Ⅱ (n = 8), Ⅲ (n = 28) and Ⅳ (n = 40) was 496 ± 300 d, 441 ± 385 d and 274 ± 218 d, respectively. Thus, patients with advanced Bismuth stage showed a reduced mean survival time, but the difference was not significant. The type of biliary drainage had no significant beneficial effect on the mean survival time (ERC vs PTBD, P = 0.806). CONCLUSION: Initial bilirubin level is a significant prognostic factor for survival of patients. In contrast, age, tumor stage according to the Bismuth-Corlette classification, and types of intervention are not significant prognostic parameters for survival. Palliative treatment with endoscopic or percutaneous biliary drainage is still suboptimal, new diagnostic and therapeutic tools need to be evaluated.Andreas Weber Sonja Landrock Jochen Schneider Manfred Stangl Bruno Neu Peter Born Meinhard Classen Thomas Rsch Roland M Schmid Christian Prinz 2007World Journal of Gastroenterology2007,13,9:23
5塔干南缘骆驼刺植被水分关系的研究(英文)显示文摘对塔克拉玛干沙漠———绿洲过渡带骆驼刺 (AlhagisparsifoliaShap .)水分关系的研究表明 :骆驼刺在夏季保持了正的膨压 ,一直较高较稳定的清晨水势说明植物水分恢复状况良好 ,植物得到了较好的水分供应 ;在 7月 ,干旱胁迫造成的水分亏缺并未影响植株正常的蒸腾作用 ,因而干旱引起的水分胁迫并未威胁到植被的存在。骆驼刺对干旱胁迫的水分生理适应主要体现在叶水平上 ,表现为饱和枝条的渗透势 (Πo)和膨压消失点的渗透势 (Πp)的差值 (ΔΠ)和相对含水量 (RWC)在膨压消失点间更大的变化、渗透调节的产生、较高较稳定的饱和枝条水分与干物质之比 (WCsat)和膨压消失点的相对含水量 (RWCp) ,以及较低的共质体水在总水分中的相对含量 (RWCsym)。但形态学上的特征 ,主要表现为深而发达的根系和蒸腾面积的减少 ,才是骆驼刺适应极端干旱环境的主要途径。非定期的夏季一次性灌溉对地下水位很低地区的骆驼刺植被水分状况的恢复没有帮助。李向义 张希明 曾凡江 Andrea FOETZKI Frank M .THOMAS 李小明 Michael RUNGE 何兴元 2002Acta Botanica Sinica2002,44,10:22
6贵州遵义牛蹄塘组黑色岩系的硒同位素变化及其环境指示初探显示文摘西南早寒武世牛蹄塘组是分布在中国南方扬子地台的一套黑色岩系,区域上发育有典型富集多金属元素的硫化物矿化层。选取遵义松林小竹牛蹄塘组下部富硒、钼、镍等元素的黑色岩系剖面,利用Se同位素初步探讨了该剖面岩石的沉积环境和硒的可能来源。结果表明,小竹牛蹄塘组下部剖面黑色岩系的δ82/76SeSRM3149比值变化较大,下部底层含碳斑脱岩与磷块岩的变化范围在-4.35‰^+4.11‰之间;中间镍钼层及碳质页岩、碳质碳酸盐岩的δ82/76SeSRM3149变化范围窄,平均值为0.91‰±0.23‰(n=4);上层碳质页岩为-1.24‰。结合已发表的钼同位素数据,认为中间岩石沉积于缺氧/无氧环境,但存在盆地海水与热液或充氧水团的混合;下层的岩石曾一度位于充氧与贫氧环境的边界面,局部岩石曾暴露地表经历了较强的风化和蚀变作用,海水中硒有可能来自底部富硒斑脱岩的氧化淋滤或海底热液。据此推测遵义松林小竹牛蹄塘组下部岩石的沉积环境极可能处在局限盆地靠近陆地的边缘部分,经历了充氧→贫氧→缺氧/无氧→贫氧的演化阶段。朱建明 Johnson Thomas M 罗泰义 朱祥坤 2008岩石矿物学杂志2008,27,4:18
7Proposal of an ultrasonographic classification for hepatic alveolar echinococcosis: Echinococcosis multilocularis Ulm classification-ultrasound显示文摘AIM: To establish an ultrasonographic classification based on a large sample of patients with confirmed hepatic alveolar echinococcosis(AE).METHODS: Clinical data and ultrasonography(US) findings of 185 patients(100 males; 85 females; mean age at diagnosis: 51.4 ± 17.6 years; mean age at time of US examination: 58.7 ± 18.2 years) were retrospectively reviewed with respect to the US morphology of hepatic AE lesions. The sonomorphological findings were grouped according to a five-part classification scheme.RESULTS: Application of the new classification resulted in the following distribution of sonomorphological patterns among the patients examined: hailstorm(54.1%); pseudocystic(13.5%); ossification(13.0%); hemangioma-like(8.1%); and metastasis-like(6.5%). Only 4.9% of lesions could not be assigned to a sonomorphological pattern.CONCLUSION: The sonomorphological classification proposed in the present study facilitates the diagnosis,interpretation and comparison of hepatic alveolar echinococcosis in routine practice and in the context of scientific studies.Wolfgang Kratzer Beate Gruener Tanja EM Kaltenbach Sarina Ansari-Bitzenberger Peter Kern Michael Fuchs Richard A Mason Thomas FE Barth Mark M Haenle Andreas Hillenbrand Suemeyra Oeztuerk Tilmann Graeter 2015World Journal of Gastroenterology2015,21,43:16
8Results of percutaneous sclerotherapy and surgical treatment in patients with symptomatic simple liver cysts and polycystic liver disease显示文摘AIM: To evaluate the results of the treatment of simple liver cysts (solitary and multiple) and polycystic liver disease (PLD) using percutaneous sclerotherapy and/or surgical procedures in a single tertiary referral centre. METHODS: Retrospective analysis of 54 patients referred for evaluation and possible treatment of simple liver cysts (solitary and multiple) and PLD, from January 1997 to July 2006. RESULTS: Simple liver cysts were treated in 41 pts (76/) with a mean size of 12.6 cm. The most common reason for referral was abdominal pain or discomfort (85/). Percutaneous sclerotherapy was performed as initial treatment in 30 pts, showing cyst recurrence in 6 pts (20/). Surgical treatment was initially performed in 11 pts with cyst recurrence in 3 pts (27/). PLD was treated in 13 pts (24/) with a mean size of the dominant cyst of 13 cm. Percutaneous sclerotherapy for PLD was performed in 9 pts with recurrence in 7 pts (77.8/). Surgical treatment for PLD was undertaken in 4 pts (30.8/) with recurrence in all. Eventually, 2 pts with PLD in the presence of polycystic kidney disease underwent liver-and kidney transplantation because of deterioration of liver and kidney function. CONCLUSION: The majority of patients with simple liver cysts and PLD are referred for progressive abdominal pain. As initial treatment, percutaneous sclerotherapy is appropriate. Surgical deroofing is indicated in caseof cyst recurrence after percutaneous sclerotherapy. However, the results of percutaneous sclerotherapy and surgical treatment for PLD are disappointing. Partial liver resection is indicated when there is suspicion of a pre-malignant lesion.Deha Erdogan Otto M van Delden Erik AJ Rauws Olivier RC Busch Johan S Lameris Dirk J Gouma Thomas M van Gulik 2007World Journal of Gastroenterology2007,13,22:15
9Severe scrub typhus infection: Clinical features, diagnostic challenges and management显示文摘Scrub typhus infection is an important cause of acute undifferentiated fever in South East Asia. The clinical picture is characterized by sudden onset fever with chills and non-specific symptoms that include headache, myalgia, sweating and vomiting. The presence of an eschar, in about half the patients with proven scrub typhus infection and usually seen in the axilla, groin or inguinal region, is characteristic of scrub typhus. Common laboratory findings are elevated liver transaminases, thrombocytopenia and leukocytosis. About a third of patients admitted to hospital with scrub typhus infection have evidence of organ dysfunction that may include respiratory failure, circulatory shock, mild renal or hepatic dysfunction, central nervous system involvement or hematological abnormalities. Since the symptoms and signs are non-specific and resemble other tropical infections like malaria, enteric fever, dengue or leptospirosis, appropriate laboratory tests are necessary to confirm diagnosis. Serological assays are the mainstay of diagnosis as they are easy to perform; the reference test is the indirect immunofluorescence assay(IFA) for the detection of Ig M antibodies. However in clinical practice, the enzyme-linked immuno-sorbent assay is done due to the ease of performing this test and a good sensitivity and sensitivity when compared with the IFA. Paired samples, obtained at least two weeks apart, demonstrating a ≥ 4 fold rise in titre, is necessary for confirmation of serologic diagnosis. The mainstay of treatment is the tetracycline group of antibiotics or chloramphenicol although macrolides are used alternatively. In mild cases, recovery is complete. In severe cases with multi-organ failure, mortality may be as high as 24%.John Victor Peter Thomas I Sudarsan John Anthony J Prakash George M Varghese 2015World Journal of Critical Care Medicine2015,4,3:13
10Abdominal applications of diffusion-weighted magnetic resonance imaging: Where do we stand?显示文摘Diffusion-weighted imaging (DWI) is one of the magnetic resonance imaging (MRI) sequences providing qualitative as well as quantitative information at a cellular level. It has been widely used for various applications in the central nervous system. Over the past decade, various extracranial applications of DWI have been increasingly explored, as it may detect changes even before signal alterations or morphological abnormalities become apparent on other pulse sequences. Initial results from abdominal MRI applications are promising, particularly in oncological settings and for the detection of abscesses. The purpose of this article is to describe the clinically relevant basic concepts of DWI, techniques to perform abdominal DWI, its analysis and applications in abdominal visceral MR imaging, in addition to a brief overview of whole body DWI MRI.Ajaykumar C Morani Khaled M Elsayes Peter S Liu William J Weadock Janio Szklaruk Jonathan Russell Dillman Asra Khan Thomas L Chenevert Hero K Hussain 2013World Journal of Radiology2013,5,3:12
11Modern imaging techniques for preoperative detection of distant metastases in gastric cancer显示文摘A substantial portion of patients with newly diagnosed gastric cancer has distant metastases(M1 disease).These patients have a very poor prognosis and it is generally accepted that they should be treated with noncurative intent. Because it dramatically changes prognosis and treatment plans, it is very important to diagnose distant metastases. In this article, the definition, pathways, incidence and sites of distant metastases in gastric cancer are described.Subsequently, the current performance of imaging in detecting distant metastases in newly diagnosed gastric cancer is outlined and future prospects are discussed.Robert M Kwee Thomas C Kwee 2015World Journal of Gastroenterology2015,21,37:12
12自然保护区、恢复力和动态景观显示文摘在这个日益被人类活动所改变的世界里,保护生物多样性对于维持有恢复力的生态系统和确保生态系统产品的可持续流动以及对社会的服务是至关重要的。但是,现有的自然保护区和国家公园不大可能结合生态系统的长期和大尺度的动态。因此,保护策略必须包括大面积的人类利用经营的土地。为了能使生态系统在大规模的自然和人为干扰之后得以重组,以生态存储形式出现的空间恢复力是必备的前提。生态存储包括那些能使生态系统得以重组的物种、相互作用和结构,它的组成部分可能出现在干扰斑块中,也可能出现在周围的景观中。现有的静态自然保护区应该由动态自然保护区加以补充,例如生态休闲地和动态演替保护区,这些都是在景观尺度上模拟自然干扰状况,进行生态系统经营的组成部分。Janne Bengtsson Per Angelstam Thomas Elmqvist Urban Emanuelsson Carl Folke Margareta Ihse Fredrik Moberg Magnus Nystrm 王胜 2003AMBIO-人类环境杂志2003,32,6:11
13Deep-learning based denoising and reconstruction of super-resolution structured illumination microscopy images显示文摘Super-resolution structured illumination microscopy(SR-SIM) provides an up to twofold enhanced spatial resolution of fluorescently labeled samples. The reconstruction of high-quality SR-SIM images critically depends on patterned illumination with high modulation contrast. Noisy raw image data(e.g., as a result of low excitation power or low exposure time), result in reconstruction artifacts. Here, we demonstrate deep-learning based SR-SIM image denoising that results in high-quality reconstructed images. A residual encoding–decoding convolutional neural network(RED-Net) was used to successfully denoise computationally reconstructed noisy SR-SIM images.We also demonstrate the end-to-end deep-learning based denoising and reconstruction of raw SIM images into high-resolution SR-SIM images. Both image reconstruction methods prove to be very robust against image reconstruction artifacts and generalize very well across various noise levels. The combination of computational image reconstruction and subsequent denoising via RED-Net shows very robust performance during inference after training even if the microscope settings change.ZAFRAN HUSSAIN SHAH MARCEL MÜLLER TUNG-CHENG WANG PHILIP MAURICE SCHEIDIG AXEL SCHNEIDER MARK SCHÜTTPELZ THOMAS HUSER WOLFRAM SCHENCK 2021Photonics Research2021,9,5:11
14Plants as concept generators for biomimetic light-weight structures with variable stiffness and self-repair mechanisms显示文摘Plants possess many structural and functional properties that have a high potential to serve as concept generators for the production of biomimetic technical materials and structures. We present data on two features of plants (variable stiffness due to pressure changes in cellular structures and rapid self-repair functions) that may be used as models for biomimetic projects.Thomas Speck Tom Masselter Bettina Prüm Olga Speck Rolf Luchsinger Siegfried Fink 2004Journal of Bionic Engineering2004,1,4:10
15Increased liver stiffness in alcoholic liver disease:Differentiating fibrosis from steatohepatitis显示文摘AIM:To test if inflammation also interferes with liver stiffness (LS) assessment in alcoholic liver disease (ALD) and to provide a clinical algorithm for reliable fibrosis assessment in ALD by FibroScan (FS).METHODS:We first performed sequential LS analysis before and after normalization of serum transaminases in a learning cohort of 50 patients with ALD admitted for alcohol detoxification. LS decreased in almost all patients within a mean observation interval of 5.3 d. Six patients (12%) would have been misdiagnosed with F3and F4 fibrosis but LS decreased below critical cut-off values of 8 and 12.5 kPa after normalization of trans-aminases. RESULTS:Of the serum transaminases,the decrease in LS correlated best with the decrease in glutamic oxaloacetic transaminase (GOT). No significant chang-es in LS were observed below GOT levels of 100 U/L. After establishing the association between LS and GOT levels,we applied the rule of GOT < 100 U/L for reliable LS assessment in a second validation cohort of 101 patients with histologically confi rmed ALD. By ex-cluding those patients with GOT > 100 U/L at the time of LS assessment from this cohort,the area under the receiver operating characteristic (AUROC) for cirrhosis detection by FS improved from 0.921 to 0.945 while specificity increased from 80% to 90% at a sensitivity of 96%. A similar AUROC could be obtained for lower F3 fibrosis stage if LS measurements were restricted to patients with GOT < 50 U/L. Histological grading of inflammation did not further improve the diagnostic accuracy of LS.CONCLUSION:Coexisting steatohepatitis markedly increases LS in patients with ALD independent of fibrosis stage. Postponing cirrhosis assessment by FS during alcohol withdrawal until GOT decreases to < 100 U/mL signif icantly improves the diagnostic accuracy.Sebastian Mueller Gunda Millonig Lucie Sarovska Stefanie Friedrich Frank M Reimann Maria Pritsch Silke Eisele Felix Stickel Thomas Longerich Peter Schirmacher Helmut Karl Seitz 2010World Journal of Gastroenterology2010,16,8:10
16Pseudolymphoma (reactive lymphoid hyperplasia) of the liver:A clinical challenge显示文摘Reactive lymphoid hyperplasia(RLH), also known as pseudolymphoma or nodular lymphoid lesion of the liver is an extremely rare condition, and only 51 hepatic RLH cases have been described in the literature since the first case was described in 1981. The majority of these cases were asymptomatic and incidentally found through radiological imaging. The precise etiology of hepatic RLH is still unknown, but relative high prevalence of autoimmune disorder in these cases suggests an immune-based liver disorder. Imaging features of hepatic RLH often suggest malignant lesions such as hepatocellular carcinoma and cholangiocarcinoma. In this report, we discuss two cases of hepatic RLH in patients with autoimmune hepatitis. We also present pathologic and magnetic resonance imaging findings, including one case utilizing a hepatocellular contrast agent, Eovist. Definitive diagnosis of hepatic RLH often requires surgical excision.Yong Kyong Kwon Reena C Jha Kambiz Etesami Thomas M Fishbein Metin Ozdemirli Chirag S Desai 2015World Journal of Hepatology2015,7,26:8
17Current and future applications of magnetic resonance imaging and spectroscopy of the brain in hepatic encepha-lopathy显示文摘肝的脑病(他) 普通 neuro 精神病学的畸形,它从肝细胞失败或 portosystemic 与肝疾病和结果复杂化病人的功课正在推延。表明他是广泛地可变的并且从温和无临床症状的骚乱包含一个系列到深昏迷。研究兴趣集中于传播导出勇气的毒素的角色,特别地氨,胀大的大脑的开发和在导致全球 CNS 消沉和混乱功能的服的 neurotransmitter 系统的变化。直到最近,服的功能的直接调查有在人是困难的。然而,当磁性的回声光谱学( 1H 太太)检测的质子在大脑生物化学变化时,新磁性的回声成像( MRI )技术在大脑体积( coregistered MRI )和损害大脑功能( fMRI )提供对变化的评价的一个非侵略的工具,包括服的 osmolytes 的直接测量,例如 myoinositol ,充斥管理对细胞的动态平衡内在的过程的使挫折和夫酸安,包括细胞内部的水的累积。这些细胞内部的 osmolytes 的集中与 hyperammonaemia 改变。有 neuropsychiatric 缺陷并且自从先生系列的严厉的检测太太的代谢物畸形相互关联向正常术后疗法回来,技术可能具有在客观耐心的监视并且在估计各种各样的治疗政体的有效性的使用。VP Bob Graver M Alex Dresner Daniel M Forton Serena Counsell David J Larkman Nayna Patel Howard C Thomas Simon D Taylor-Robinson 2006World Journal of Gastroenterology2006,12,19:8
18禾谷镰孢菌高产毒菌株的构建显示文摘为研究禾谷镰孢菌Fusarium graminearum Schw.单端孢霉烯族毒素生物合成基因(产毒基因)在寄主体内的表达,作者构建了带报告基因GUS((-葡糖苷酸酶基因)的质粒pGUSTRI6P5,并通过对野生型菌株的转化获得禾谷镰孢高产毒菌株。该质粒含有由TRI5(禾谷镰孢单端孢霉二烯合酶基因)启动子(TRI5 Prom)驱动的GUS基因编码区、潮霉素B抗性基因和拟枝孢镰孢F. sporotrichioides的产毒调控基因TRI6(FSTRI6)。用pGUSTRI6P5转化野生型菌株GZ3639后,在含潮霉素 B的培养基上选取抗性菌落,单孢分离获单孢菌株(转化子)。在GYEP(葡萄糖-酵母粉-蛋白胨)液体培养基上,转化子B4-1和B16-1的GUS比活力强,15-AcDON(15-乙酰脱氧雪腐镰刀菌烯醇)产量高,且两者呈正相关(相关系数(r)分别为0.9839和0.9523)。B4-1和B16-1两个转化子可作为研究禾谷镰孢与其寄主相互作用的工具菌株。陈利锋 Thomas M HOHN 2001菌物系统2001,20,3:8
19抑制平滑肌的张力收缩:一种治疗勃起功能障碍的新途径显示文摘阴茎海绵体血管的收缩及张力的维持是由钙敏感的RhoA/Rho激酶信号传导途径介导的。以Y 2 76 32抑制海绵体平滑肌细胞的Rho激酶信号系统可促进阴茎勃起 ,表现为海绵体内压 (ICP)明显升高 ,而平均动脉压 (MAP)变化不显著。为什么在血管收缩信号很强的情况下性刺激仍能引发阴茎勃起反应 ?我们设想体内一氧化氮 (NO)能直接抑制RhoA/Rho激酶途径的活性 ,减少血管张力 ,促使血管舒张 ,勃起发生 ,使用Y 2 76 32可以恢复性腺功能低下和高血压病动物ED模型的阴茎勃起功能 ,这表明抑制Rho激酶活性药物具有临床应用的前景。此外 ,我们的结果显示阴茎表面使用Rho激酶抑制剂可能为ED治疗的有效方法之一。戴玉田 Thomas M MILLS Ronald W LEWIS RClinton WEBB 2002中华男科学杂志2002,8,6:8
20肾动脉内支架成形术的临床应用显示文摘目的:对肾动脉阻塞性病变采用Palmaz内支架进行治疗,并对其临床远期疗效进行前瞻性、非随机研究分析。材料与方法:7例(26%)为经皮肾动脉气囊成形术(PTRA)治疗失败者,13例(48%)为PTRA后病变再狭窄,4例(15%)为PTRA后出现并发症,3例(11%)为肾动脉开口处狭窄直接作内支架治疗。共有4枚Palmaz内支架、5枚Palmaz-Schats节段性内支架及18枚Palmaz中号内支架被用于本组病例,内支架透视导向下用气囊导管及8F导引鞘释放到靶血管段。结果:技术成功率为100%(残余狭窄<30%),未发生严重并发症,病变两端平均压差从6.8±1.5kPa(1kPa=7.5mmHg)降至0kPa(P<0.05),随访结果(3~32个月,平均10±6个月)显示4例治愈,20例缓解,总有效率89%,平均收缩压从术前24.8±3.0kPa降至18.9±2.0kPa,舒张压从14.7±1.3kPa降至11.3±1.5kPa(P<0.05),6例肾功能衰竭病人中有2例术后肾功能改善,另4例稳定不变,2例分别于术后3、18个月出现病变内再狭窄,但未出现临床症状,病变两端压力差改变不显著。结论:常规PTRA?杨建勇 Thomas Roeren Goetz M Richter Goetz W Kaufmann 1996中华放射学杂志1996,30,5:8
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