|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Gastrointestinal radiation injury:Symptoms,risk factors and mechanisms显示文摘Ionising radiation therapy is a common treatment modality for different types of cancer and its use is expected to increase with advances in screening and early detection of cancer.Radiation injury to the gastrointestinal tract is important factor working against better utility of this important therapeutic modality.Cancer survivors can suffer a wide variety of acute and chronic symptoms following radiotherapy,which significantly reduces their quality of life as well as adding an extra burden to the cost of health care.The accurate diagnosis and treatment of intestinal radiation injury often represents a clinical challenge to practicing physicians in both gastroenterology and oncology.Despite the growing recognition of the problem and some advances in understanding the cellular and molecular mechanisms of radiation injury,relatively little is known about the pathophysiology of gastrointestinal radiation injury or any possible susceptibility factors that could aggravate its severity.The aims of this review are to examine the various clinical manifestations of post-radiation gastrointestinal symptoms,to discuss possible patient and treatment factors implicated in normal gastrointestinal tissue radiosensitivity and to outline different mechanisms of intestinal tissue injury. | Abobakr K Shadad Frank J Sullivan Joseph D Martin Laurence J Egan | 2013 | World Journal of Gastroenterology2013，19，2： | 35 |
| 2 | Gastrointestinal radiation injury:Prevention and treatment显示文摘With the recent advances in detection and treatment of cancer,there is an increasing emphasis on the efficacy and safety aspects of cancer therapy.Radiation therapy is a common treatment for a wide variety of cancers,either alone or in combination with other treatments.Ionising radiation injury to the gastrointestinal tract is a frequent side effect of radiation therapy and a considerable proportion of patients suffer acute or chronic gastrointestinal symptoms as a result.These side effects often cause morbidity and may in some cases lower the efficacy of radiotherapy treatment.Radiation injury to the gastrointestinal tract can be minimised by either of two strategies:technical strategies which aim to physically shift radiation dose away from the normal intestinal tissues,and biological strategies which aim to modulate the normal tissue response to ionising radiation or to increase its resistance to it.Although considerable improvement in the safety of radiotherapy treatment has been achieved through the use of modern optimised planning and delivery techniques,biological techniques may offer additional further promise.Different agents have been used to prevent or minimize the severity of gastrointestinal injury induced by ionising radiation exposure,including biological,chemical and pharmacological agents.In this review we aim to discuss various technical strategies to prevent gastrointestinal injury during cancer radiotherapy,examine the different therapeutic options for acute and chronic gastrointestinal radiation injury and outline some examples of research directions and considerations for prevention at a pre-clinical level. | Abobakr K Shadad Frank J Sullivan Joseph D Martin Laurence J Egan | 2013 | World Journal of Gastroenterology2013，19，2： | 32 |
| 3 | Clinical outcome and predictors of survival after TIPS insertion in patients with liver cirrhosis显示文摘AIM:To determine the clinical outcome and predictors of survival after transjugular intrahepatic portosystemic stent shunt (TIPS) implantation in cirrhotic patients. METHODS:Eighty-one patients with liver cirrhosis and consequential portal hypertension had TIPS implantation (bare metal) for either refractory ascites (RA) (n= 27) or variceal bleeding (VB) (n = 54). Endpoints for the study were:technical success, stent occlusion and stent stenosis, rebleeding, RA and mortality. Clinical records of patients were collected and analysed. Baseline characteristics [e.g., age, sex, CHILD score and the model for end-stage liver disease score (MELD score), underlying disease] were retrieved. The Kaplan-Meier method was employed to calculate survival from the time of TIPS implantation and comparisons were made by log rank test. A multivariate analysis of factors influencing survival was carried out using the Cox proportional hazards regression model. Results were expressed as medians and ranges. Comparisons between groups were performed by using the Mann-Whitney Utest and the χ 2 test as appropriate. RESULTS:No difference could be seen in terms of age, sex, underlying disease or degree of portal pressure gradient (PPG) reduction between the ascites and the bleeding group. The PPG significantly decreased from 23.4 ± 5.3 mmHg (VB) vs 22.1 ± 5.5 mmHg (RA) before TIPS to 11.8 ± 4.0 vs 11.7 ± 4.2 after TIPS implantation (P = 0.001 within each group). There was a tendency towards more patients with stage CHILD A in the bleeding group compared to the ascites group (24 vs 6, P = 0.052). The median survival for the ascites group was 29 mo compared to > 60 mo for the bleeding group (P = 0.009). The number of radiological controls for stent patency was 6.3 for bleeders and 3.8 for ascites patients (P = 0.029). Kaplan-Meier calculation indicated that stent occlusion at first control (P = 0.027), ascites prior to TIPS implantation (P = 0.009), CHILD stage (P = 0.013), MELD score (P = 0.001) and those patients not having undergone liver transplantation (P = 0.024) were significant predictors of survival. In the Cox regression model, stent occlusion (P = 0.022), RA (P = 0.043), CHILD stage (P = 0.015) and MELD score (P = 0.004) turned out to be independent prognostic factors of survival. The anticoagulation management (P = 0.097), the porto-systemic pressure gradient (P= 0.460) and rebleeding episodes (P = 0.765) had no significant effect on the overall survival. CONCLUSION:RA, stent occlusion, initial CHILD stage and MELD score are independent predictors of survival in patients with TIPS, speaking for a close follow-up in these circumstances. | Hauke S Heinzow Philipp Lenz Michael Khler Frank Reinecke Hansjrg Ullerich Wolfram Domschke Dirk Domagk Tobias Meister | 2012 | World Journal of Gastroenterology2012，18，37： | 17 |
| 4 | Testing the pecking order theory of capital structure显示文摘 | Murray Z Frank Vidhan K Goyal | 2002 | Journal of Financial Economics2002，，2： | 10 |
| 5 | 睾丸主要血管或睾丸网旁取精点与取精成功率不具显著相关性:以220例非梗阻性无精子症患者行传统或显微睾丸取精术为例显示文摘采用传统与显微睾丸取精术相结合方式对220例梗阻性无精症患者行精子提取术,如果传统手术方式未见精子即为阴性取精位点,然后选取2—3个阴性取精位点行显微睾丸取精术。术中通过手术显微镜评价睾丸血管系统,同时记录阳性取精位点与睾丸血供的关系。总的精子获取率为58-2%,早期应用传统手术方式精子获取率为46.8%,而后行显微睾丸取精术则精子获取率增加11.7%。故显微睾丸取精术的应用可显著增加精子获取率(P=0.017),且在睾丸网或睾丸主要血管处并不能显著增加阳性取精位点。 | J Ullrich Schwarzer Heiko Steinfatt Heiko Steinfatt Manfred Schleyer Frank M Kōhn Klaus Fiedler2, Irene von Hertwig Gottfried Krüsmann Wolfgang Würfel | 2013 | Asian Journal of Andrology2013，15，6： | 5 |
| 6 | Temperature dependence of carbon mineralisation: conclusions from a long-term incubation of subalpine soil samples显示文摘 | Markus Reichstein Frank Bednorz Gabriele Broll Thomas K?tterer | 2000 | Soil Biology and Biochemistry2000，，7： | 4 |
| 7 | The effects of 12 weeks of functional strength training on muscle strength,volume and activity upon exposure to elevated Gz forces in high-performance aircraft personnel显示文摘Background:Technological advancements in modern military and acrobatic jet planes have resulted in extraordinary psychophysiological loads being exerted upon flying personnel,including inducing neck and back pain.The purpose of this study was to examine the effects of 12 weeks of functional strength training on 1)the volume and strength of the neck and shoulder muscles and 2)muscular activity upon exposure to helmets of different masses and elevated Gz forces in a long-arm centrifuge in high-performance aircraft personnel.Methods:Eighteen participants underwent 12 weeks of functional strength training(n=12)or the control protocol(n=6)without additional strength training.Pre-and post-intervention tests included evaluations of isometric strength of the head extensor muscles,flexion,and lateral flexion and rotation,as well as magnetic resonance imaging(MRI)to measure the volume of the m.sternocleidomastoideus,m.trapezius,and deep neck muscles.Furthermore,during a long-arm centrifuge(+1.4 and+3Gz)protocol,the muscular activity levels of the m.sternocleidomastoideus,m.trapezius and m.erector spinae muscles were assessed without a flight helmet,with a helmet,and with a helmet and night vision goggles.Each participant’s perception of muscular strain was noted immediately after the long-arm centrifuge protocol.Results:The maximal isometric strength in all exercises and muscle volumes increased in the training group but not the control group(P<0.05).Relative muscle activity(%MVC)with a helmet decreased after the intervention in the training but not the control group(P=0.01).Relative muscle activity while wearing a helmet and night vision goggles was higher after intervention in the control group than in the training group(P<0.01).The perceived muscular strain of the neck muscles induced by the long-arm centrifuge did not differ between the groups.Conclusions:Twelve weeks of functional strength training improves the maximal isometric strength and volume of neck and shoulder muscles and leads to lower relative muscle activation upon exposure to elevated Gz forces in a long-arm centrifuge. | Monika Rausch Frank Weber Sven Kühn Carla Ledderhos Christoph Zinner Billy Sperlich | 2021 | Military Medical Research2021，8，4： | 4 |
| 8 | Environmental magnetism: Principles and applications显示文摘 | Liu Qingsong Roberts Andrew P Larrasoa?a Juan C Banerjee Subir K Guyodo Yohan Tauxe Lisa Oldfield Frank | 2012 | EN2012，，4： | 3 |
| 9 | Novel fiber-optical interferometer with miniaturized probe for in-hole measurements显示文摘Today, micro-system technology and the development of new MEMS (Micro-Electro-Mechanical Systems) are emerging rapidly. In order for this development to become a success in the long run, measurement systems have to ensure product quality. Most often, MEMS have to be tested by means of functionality or destructive tests. One reason for this is that there are no suitable systems or sensing probes available which can be used for the measurement of quasi inaccessible features like small holes or cavities. We present a measurement system that could be used for these kinds of measurements. The system combines a fiber optical, miniaturized sensing probe with low-coherence interferometry, so that absolute distance measurements with nanometer accuracy are possible. | Robert Schmitt Tilo Pfeifer Frank Depiereux Niels Knig | 2008 | Optoelectronics Letters2008，4，2： | 3 |
| 10 | Squamous-cell carcinoma in mature cystic teratoma of the ovary: systematic review and analysis of published data显示文摘 | Andreas Hackethal Doerthe Brueggmann Michael K Bohlmann Folker E Franke Hans-Rudolf Tinneberg Karsten Münstedt | 2008 | Lancet Oncology2008，，12： | 2 |
| 11 | The protein kinase encoded by the Akt proto-oncogene is a target of the PDGF-activated phosphatidylinositol 3-kinase显示文摘 | Thomas F Franke Sung-Il Yang Tung O Chan Ketaki Datta Andrius Kazlauskas Deborah K Morrison David R Kaplan Philip N Tsichlis | 1995 | Cell1995，，5： | 2 |
| 12 | 带有人工智能集成驱动装置的机械电子泵系统显示文摘目前,在泵行业出现了向带有局部人工智能机械电子解发展的趋势.其机械电子驱动系统的电子集成密度已经达到令人惊讶的程度,并且在未来将持续增长.为利用这种集成驱动系统实现转速调节而提高的投资成本,将在经济上可接受的时间范围内,通过节约能量和改善运行特性而得到补偿. | Bernd KhlerKSB流体系统有限公司 Frank Mewes 毛谦德 刘耀乙 | 2004 | 工程设计学报2004，11，3： | 2 |
| 13 | Human enamel thickness and ENAM polymorphism显示文摘The tooth enamel development gene, enamelin(ENAM), showed evidence of positive selection during a genome-wide scan of human and primate DNA for signs of adaptive evolution. The current study examined the hypothesis that a single-nucleotide polymorphism(SNP) C14625T(rs7671281) in the ENAM gene identified in the genome-wide scan is associated with a change in enamel phenotype. African Americans were selected as the target population, as they have been reported to have a target SNP frequency of approximately 50%, whereas non-Africans are predicted to have a 96% SNP frequency. Digital radiographs and DNA samples from 244 teeth in 133 subjects were analysed, and enamel thickness was assessed in relation to SNP status,controlling for age, sex, tooth number and crown length. Crown length was found to increase with molar number, and females were found to have thicker enamel. Teeth with larger crowns also had thicker enamel, and older subjects had thinner enamel.Linear regression and generalized estimating equations were used to investigate the relationship between enamel thickness of the mandibular molars and ENAM SNP status; enamel in subjects with the derived allele was significantly thinner(P = 0.040)when the results were controlled for sex, age, tooth number and crown length. The derived allele demonstrated a recessive effect on the phenotype. The data indicate that thinner dental enamel is associated with the derived ENAM genotype. This is the first direct evidence of a dental gene implicated in human adaptive evolution as having a phenotypic effect on an oral structure. | Diane M Daubert Joanna L Kelley Yuriy G Udod Carolina Habor Chris G Kleist Ilona K Furman Igor N Tikonov Willie J Swanson Frank A Roberts | 2016 | International Journal of Oral Science2016，8，2： | 2 |
| 14 | Equilibria,kinetics,and mechanism in the bicarbonate activation of hydrogen peroxide: oxidation of sulfides by peroxymonocarbonate显示文摘 | RICHARDSON D E YAO H FRANK K M | 2000 | J Am Chem Soc2000，122，： | 1 |
| 15 | Food contamination by ochratoxin A in Germany 显示文摘 | Frank H K | 1991 | IARC-Sientific Publications1991，115，： | 1 |
| 16 | A conformationally sensitive GHR antibody : impact on GH signaling and GHR proteolysis显示文摘 | Jiang J Wang X He K Li X Chen C M Sayeski P P Waters M J Frank S J | 2004 | Mol Endocrinol2004，18，12： | 1 |
| 17 | lmmunohistochemical staining for c-kit (CD117) is a rare event in human colorectal carcinoma 显示文摘 | Reed J Ouban A Frank K | 2002 | Clin Colorectal Cancer2002，2，2： | 1 |
| 18 | Genetic analysis of mengovirus protein 2A: its function in polyprorein processing and virus reproduction 显示文摘 | Jan Z Frank J M K Jochem M D | 1998 | J Virol1998，79，： | 1 |
| 19 | Multi-objective conditioning of a simple SVAT model显示文摘 | Franks S W Beven K J Gash H C | 1999 | Hydrology and Earth System Sciences1999，3，4： | 1 |
| 20 | Follicle dynamics and anovulation in polycystic ovary syndrome显示文摘 | Franks S Stark J Hardy K | 2008 | Hum Reprod Update2008，14，4： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员