期刊文献+
共找到86篇文章
< 1 2 5 >
每页显示 20 50 100
The Impact of Coronavirus Disease 2019 (COVID-19) among Immune Compromised Patients in Augusta Victoria Hospital AVH-2021
1
作者 Maen Hajmohammasd Rami Zighari +9 位作者 Hammam Rjoup Tahreer Taha Sari Abu Hania Faeda Eqtait Bilal Shawamreh Yousef Hamamra Haitham Al-Amleh Murad Krajah Noor Ismael Ali Sabateen 《Advances in Infectious Diseases》 2021年第3期269-277,共9页
<strong>Background: </strong>Coronavirus disease 2019 which is officially known as COVID-19 belongs to family viruses. COVID-19 manifestations vary among affected people. These symptoms may become more ser... <strong>Background: </strong>Coronavirus disease 2019 which is officially known as COVID-19 belongs to family viruses. COVID-19 manifestations vary among affected people. These symptoms may become more serious among patients suffering from chronic disease and those who are on treatment which may af-fect their defense mechanism or immune-compromised patients who become more vulnerable to complications of COVID-19, and at high risk for morbidity and mortality with any bacterial or viral illness. <strong>Method: </strong>A retrospective, non-experimental research design was applied with a quantitative approach among patients with COVID-19 who were admitted to COVID-19 department at AVH with a total of 72 patients. Data were extracted from a patients’ elec-tronic medical record. <strong>Results:</strong> During COVID-19 outbreak 72 patients were admitted to COVID department at AVH, 54.2% were female and 33% of study participants were from Gaza governorate followed by Jerusalem 27%. Most participants 34.7% had first clinic visit after two days from the onset of COVID-19 symptoms. 45.8% were discharged to home while 13.9% died. All inflammatory markers that include ferritin, C-RP, IL-6 and D-dimer are in-creasing in all patients that were admitted to hospital;IL-6 and D-dimer were significant inflammatory markers in relation to the mortality rate. The study found the risk of mortality with IL-6 mean (218.5), and D-dimer mean (12). Furthermore there was a relation between increased risk of mortality and im-mune comprised. <strong>Conclusion:</strong> Mortality rate increased among COVID-19 pa-tients when IL-6 was higher than 218.5 and D-dimer higher than 12, and there was a relationship between increased risk of mortality and immune comprised. 展开更多
关键词 CORONAVIRUS Immune Compromised Augusta Victoria Hospital Inflammatory Marker Interleukin 6 Mortality
下载PDF
Why do thoracic epidurals fail?A literature review on thoracic epidural failure and catheter confirmation
2
作者 Kamal Kumar Fuhazia Horner +2 位作者 Mohamed Aly Gopakumar S Nair Cheng Lin 《World Journal of Critical Care Medicine》 2024年第3期11-16,共6页
Thoracic epidural anesthesia(TEA)has been the gold standard of perioperative analgesia in various abdominal and thoracic surgeries.However,misplaced or displaced catheters,along with other factors such as technical ch... Thoracic epidural anesthesia(TEA)has been the gold standard of perioperative analgesia in various abdominal and thoracic surgeries.However,misplaced or displaced catheters,along with other factors such as technical challenges,equipment failure,and anatomic variation,lead to a high incidence of unsatisfactory analgesia.This article aims to assess the different sources of TEA failure and strategies to validate the location of thoracic epidural catheters.A literature search of PubMed,Medline,Science Direct,and Google Scholar was done.The search results were limited to randomized controlled trials.Literature suggests techniques such as electrophysiological stimulation,epidural waveform monitoring,and x-ray epidurography for identifying thoracic epidural placement,but there is no one particular superior confirmation method;clinicians are advised to select techniques that are practical and suitable for their patients and practice environment to maximize success. 展开更多
关键词 Thoracic epidural Failure rate PLACEMENT Electrophysiological stimulation Epidural waveform monitoring X-ray epidurography
下载PDF
Clinical profile and outcomes in very elderly patients with atrial fibrillation anticoagulated with rivaroxaban: data from the EMIR study
3
作者 Francisco Marín Manuel Anguita Sánchez +9 位作者 Iñaki Lekuona Marcelo Sanmartín Fernán-dez Vivencio Barrios Carlos Perez Muñoz Juan Cosín-Sales Alejandro IPérez Cabeza Vanesa Roldán Schilling Carles Rafols Priu Esteban Orenes-Piñero María Asunción Es-teve-Pastor 《Journal of Geriatric Cardiology》 SCIE CAS CSCD 2024年第7期723-732,共10页
Objectives To analyze the clinical profile,adequacy of treatment with rivaroxaban and outcomes in octogenarians with atrial fibrillation(AF),taking rivaroxaban in clinical practice.Methods Observational and non-interv... Objectives To analyze the clinical profile,adequacy of treatment with rivaroxaban and outcomes in octogenarians with atrial fibrillation(AF),taking rivaroxaban in clinical practice.Methods Observational and non-interventional study that included AF adults recruited from 79 Spanish centers,anticoagulated with rivaroxaban ≥ 6 months before being included.Data were analyzed according to age(≥ 80 vs.< 80 years) at baseline.Results Out of 1433 patients,453(31.6%) were octogenarians at baseline.Compared to younger patients,octogenarians had more comorbidities,higher CHA2DS2-VASc(4.5 ± 1.3 vs.3.0 ± 1.4;P < 0.001) and HAS-BLED scores(2.0 ± 1.0 vs.1.4 ± 1.0;P < 0.001).Overall,the dose of rivaroxaban was adequately prescribed in 83.4% of patients,but more frequently in the younger population(71.1% vs.89.1%;P = 0.039).After a mean follow-up of 2.2 ± 0.6 years,annual rates of stroke + systemic embolism + transient ischemic attack,MACE,cardiovascular death and major bleeding were 1.03%,1.24%,1.03% and 1.75%,respectively,in octogenarian patients.Except for progressive heart failure death and major bleeding,rates of outcomes in octogenarians were similar compared to younger patients.In octogenarians,the concomitant use of antiplatelet agents and non-severe dementia were independently associated with the development of ischemic stroke,whereas previous coronary revascularization and heart failure with MACE,and higher HAS-BLED score with major bleeding.Conclusions In clinical practice,around one third of patients taking rivaroxaban are octogenarians.These patients have many comorbidities and a high thromboembolic risk.Despite that,rates of adverse events remain low.Rivaroxaban is adequately prescribed in the majority of octogenarians. 展开更多
关键词 PATIENTS ATRIAL BLEEDING
下载PDF
Operating room black box:Scrutinizer of theatre practices
4
作者 Prem Kumar A PI Pragyan Pratik Nithya Ravichandran 《Laparoscopic, Endoscopic and Robotic Surgery》 2023年第4期142-146,共5页
Objective:Adverse surgical events are a major cause of morbidity,mortality,and disability worldw ide.The cause of many such events can be attributed to interruptions in the operating room(OR),muli-tasking by surgeons,... Objective:Adverse surgical events are a major cause of morbidity,mortality,and disability worldw ide.The cause of many such events can be attributed to interruptions in the operating room(OR),muli-tasking by surgeons,etc.The objective of this study was to observe the types and frequency of intra-operative wor kflow interruptions in our ORs.Method:This ccoss-sectional study was conducted from March Do April of 2023.An observational approach using an audio-video recording device was employed to record OR flow disr uptions.One elective OR and one emergency OR under the Department of General Surgery were selected for the study.All open and laparoscopic surger ies conducted in the selected ORs were included.An Internet Protocol camera'was installed in the selec ted ORS with a view of the entire room,including the anesthesia station.Audio-video recording was started after the first indsion and stopped after closure of the surgical site.Result:Of the 51 cases that were studied,45(88.2%)were elective,and 18(35.3%)were laparoscopic cases.They could be classified into 8 types of open procedures and 4 types of lapar oscopic procedures.The mean maximum headcount inside the OR was 15.5土3.6 and doors opened on average of 15.8土6.0 times during a procedure.Other interruptions were surgeons attending phone calls(24,47.1%),leaving the sterile area(21,41.2%),technical disturbances(32,62.7%),anesthetic interruptions(18,35.3%),and faulty instruments(29,56.9%)Elective procedures had a signifcandy higher average number of in-terruptions per operating hour than emergency procedures(175±8.6vs.7.1±2.9,p<0.01).Condusion:Preventable factors such as faulty instruments,anesthetic interruption,and attending phone calls by the surgeon are commonly observed in ORs.They need to be addressed by timely surgical audits or the adoption of continued sureillance methods that can help take measures to minimize their occurrence. 展开更多
关键词 INTERRUPTION Black box CAMERA Surgical audit Operation theatre
下载PDF
Prospective observational study to assess the validity of the functional disability score in patients with blepharospasm,hemifacial spasm and synkinesis treated with botulinum toxin injection
5
作者 Linda O.Okafor Aaron Jamison +1 位作者 Maribel Favor Raman Malhotra 《Annals of Eye Science》 2023年第3期41-47,共7页
Background:Benign essential blepharospasm(BEB),aberrant facial nerve degeneration and hemifacial spasm(HFS)are all examples dystonia which,though not life-threatening,can have a significant impact on patient quality o... Background:Benign essential blepharospasm(BEB),aberrant facial nerve degeneration and hemifacial spasm(HFS)are all examples dystonia which,though not life-threatening,can have a significant impact on patient quality of life.The need for reliable self-rating surveys to monitor functional disability is fundamental.The Blepharospasm Disability Index(BSDI)is already a widely utilised and validated selfrating score for blepharospasm whilst the functional disability score(FDS)requires further validation.The principle aim of this study is to repeat validation of the FDS against the BSDI,which has been validated by several groups since its original description but only in patients with BEB.Methods:A randomised blinded prospective cohort study was conducted at a single unit on 38 patients with BEB,aberrant facial nerve degeneration and HFS.Patients were blinded to complete the FDS followed by the BSDI or the BSDI followed by the FDS with a 30-minute interval.Results:Both the FDS and BSDI were found to be reliable with high internal consistency and test-retest reliability.Both scales were also found to be moderately correlated with the Jankovic disease severity score.Conclusions:This study is the first to use the FDS as a rating scale in patients with HFS and aberrant facial nerve degeneration.It is also the first study to formally validate the FDS as an acceptable rating scale for patients with dystonia and in particular it provides validation for its use in patients with HFS and aberrant facial nerve degeneration. 展开更多
关键词 BLEPHAROSPASM botulinum toxin(BoNT) DYSTONIA
下载PDF
Perceived barriers and facilitators of day-case surgery for major foot and ankle procedures?A cross-sectional survey of United Kingdom surgeons
6
作者 Amber Berry Linzy Houchen-Wolloff +3 位作者 Natalie Crane David Townshend Robert Clayton Jitendra Mangwani 《World Journal of Orthopedics》 2023年第4期248-259,共12页
BACKGROUND Advances in minimally invasive surgery and improved post-operative pain management make it possible to consider performing even major foot/ankle operations as day-case.This could have significant benefits f... BACKGROUND Advances in minimally invasive surgery and improved post-operative pain management make it possible to consider performing even major foot/ankle operations as day-case.This could have significant benefits for patients and the health service.However there are theoretical concerns about post-operative complications and patient satisfaction due to pain.AIM To scope the current practice of foot and ankle surgeons on day-case surgery for major foot and ankle procedures in the United Kingdom(UK).METHODS An online survey(19 questions)was sent to UK foot and ankle surgeons via the British Orthopaedic Foot&Ankle Society membership list in August 2021.Major foot and ankle procedures were defined as surgery that is usually performed as an inpatient in majority of centres and day-case as same day discharge,with day surgery as the intended treatment pathway.RESULTS 132 people responded to the survey invitation with 80%working in Acute NHS Trusts.Currently 45%of respondents perform less than 100 day-case surgeries per year for these procedures.78%felt that there was scope to perform more procedures as day-case at their centre.Post-operative pain(34%)and patient satisfaction(10%)was not highly measured within their centres.Lack of adequate physiotherapy input pre/post-operatively(23%)and lack of out of hours support(21%)were the top perceived barriers to performing more major foot and ankle procedures as day-case.CONCLUSION There is consensus among UK surgeons to do more major foot/ankle procedures as day-case.Out of hours support and physiotherapy input pre/post-op were perceived as the main barriers.Despite theoretical concerns about post-operative pain and satisfaction this was only measured by a third of those surveyed.There is a need for nationally agreed protocols to optimise the delivery of and measurement of outcomes in this type of surgery.At a local level,the provision of physiotherapy and out of hours support should be explored at sites where this is a perceived barrier. 展开更多
关键词 Day-case FOOT ANKLE PHYSIOTHERAPY Survey
下载PDF
塞舌尔527例猝死患者尸检分析 被引量:1
7
作者 赵鹏 高鹏 Rubell Brewer 《临床与实验病理学杂志》 CAS CSCD 北大核心 2009年第4期415-417,共3页
目的分析塞舌尔527例猝死的原因及特点。方法收集塞舌尔维多利亚医院病理科527例猝死病例的尸检资料。结果527例中,男404例,女123例。猝死原因以心血管系统疾病最常见,其余的依次是呼吸系统疾病、消化系统疾病、神经系统疾病等。结论心... 目的分析塞舌尔527例猝死的原因及特点。方法收集塞舌尔维多利亚医院病理科527例猝死病例的尸检资料。结果527例中,男404例,女123例。猝死原因以心血管系统疾病最常见,其余的依次是呼吸系统疾病、消化系统疾病、神经系统疾病等。结论心血管系统疾病是猝死的主要原因,尸体解剖对明确猝死患者死因是非常必要的。 展开更多
关键词 猝死 尸体解剖 塞舌尔
下载PDF
从加拿大医学生外科实习谈加强对医学生临床实践能力的培养 被引量:9
8
作者 袁时芳 Kent Mackenzie 《西北医学教育》 2011年第3期487-489,514,共4页
医学教育国际化教学改革新形势下,如何加强医学生临床实践能力的培养是我们亟待思考和解决的问题。本文介绍了加拿大麦吉尔大学医学生外科实习情况,并与国内医学生临床实习情况的异同进行了比较,对加强医学生临床实践能力培养的新举措... 医学教育国际化教学改革新形势下,如何加强医学生临床实践能力的培养是我们亟待思考和解决的问题。本文介绍了加拿大麦吉尔大学医学生外科实习情况,并与国内医学生临床实习情况的异同进行了比较,对加强医学生临床实践能力培养的新举措进行了探讨。 展开更多
关键词 临床实习 医学生 临床实践能力
下载PDF
The evolution and refinement of vasoepididymostomy techniques 被引量:24
9
作者 Peter T Chan 《Asian Journal of Andrology》 SCIE CAS CSCD 2013年第1期49-55,共7页
Obstructive azoospermia secondary to epididymal obstruction can be corrected by microsurgical reconstruction with vasoepididymostomy (VE). Although alternative management such as epididymal or testicular sperm aspir... Obstructive azoospermia secondary to epididymal obstruction can be corrected by microsurgical reconstruction with vasoepididymostomy (VE). Although alternative management such as epididymal or testicular sperm aspiration in conjunction with intracytoplasmic sperm injection is feasible, various studies have established the superior cost-effectiveness of VE as a treatment of choice. Microsurgical VE is considered one of the most technically challenging microsurgeries. Its success rate is highly dependent on the skills and experience of the surgeons. Various techniques have been described in the literature for VE. We have pioneered a technique known as longitudinal intussusception VE (LIVE) in which the epididymal tubule is opened longitudinally to obtain a larger opening to allow its tubular content to pass through the anastomosis. Our preliminary data demonstrated a patency rate of over 90%. This technique has been widely referenced in the recent literature including robotic-assisted microsurgery. The history of the development of different VE approaches, the oreoDerative evaluation along with the techniaues of various VE will be described in this article. 展开更多
关键词 longitudinal intussusception vasoepididymostomy (LIVE) intracytoplasmic sperm injection (ICSI) male infertility MICROSURGERY obstructive azoospermia vasoepididymostomy (VE)
下载PDF
Use of portal pressure studies in the management of variceal haemorrhage 被引量:38
10
作者 Jennifer Addley Tony CK Tham William Jonathan Cash 《World Journal of Gastrointestinal Endoscopy》 CAS 2012年第7期281-289,共9页
Portal hypertension occurs as a complication of liver cirrhosis and complications such as variceal bleeding lead to significant demands on resources. Endoscopy is the gold standard method for screening cirrhotic patie... Portal hypertension occurs as a complication of liver cirrhosis and complications such as variceal bleeding lead to significant demands on resources. Endoscopy is the gold standard method for screening cirrhotic patients however universal endoscopic screening may mean a lot of unnecessary procedures as the presence of oesophageal varices is variable hence a large time and cost burden on endoscopy units to carry out both screening and subsequent follow up of variceal bleeds. A less invasive method to identify those at high risk of bleeding would allow earlier prophylactic measures to be applied. Hepatic venous pressure gradient (HVPG) is an acceptable indirect measurement of portal hypertension and predictor of the complications of portal hypertension in adult cirrhotics. Varices develop at a HVPG of 10-12 mmHg with the appearance of other complications with HPVG > 12 mmHg. Variceal bleeding does not occur in pressures under 12 mmHg. HPVG > 20 mmHg measured early after admission is a significant prognostic indicator of failure to control bleeding varices, indeed early transjugular intrahepatic portosystemic shunt (TIPS) in such circumstances reduces mortality significantly. HVPG can be used to identify responders to medical therapy. Patients who do not achieve the suggested reduction targets in HVPG have a high risk of rebleeding despite endoscopic ligation and may not derive significant overall mortality benefit from endoscopic intervention alone, ultimately requiring TIPS or liver transplantation. Early HVPG measurements following a variceal bleed can help to identify those at risk of treatment failure who may benefit from early intervention with TIPS. Therefore, we suggest using HVPG measurement as the investigation of choice in those with confirmed cirrhosis in place of endoscopy for intitial variceal screening and, where indicated, a trial of B-blockade, either intravenously during the initial pressure study with assessment of response or oral therapy with repeat HVPG six weeks later. In those with elevated pressures, primary medical prophylaxis could be commenced with subsequent close monitoring of HVPG thus negating the need for endoscopy at this point. All patients presenting with variceal haemorrhage should undergo HVPG measurement and those with a gradient greater than 20 mmHg should be considered for early TIPS. By introducing portal pressure studies into a management algorithm for variceal bleeding, the number of endoscopies required for further intervention and follow up can be reduced leading to significant savings in terms of cost and demand on resources. 展开更多
关键词 Variceal HAEMORRHAGE PORTAL hypertension PORTAL PRESSURE VARICES HEPATIC VENOUS PRESSURE gradient
下载PDF
Pancreatic cancer: A review of clinical diagnosis, epidemiology, treatment and outcomes 被引量:197
11
作者 Andrew McGuigan Paul Kelly +3 位作者 Richard C Turkington Claire Jones Helen G Coleman R Stephen McCain 《World Journal of Gastroenterology》 SCIE CAS 2018年第43期4846-4861,共16页
This review aims to outline the most up-to-date knowledge of pancreatic adenocarcinoma risk, diagnostics, treatment and outcomes, while identifying gaps that aim to stimulate further research in this understudied mali... This review aims to outline the most up-to-date knowledge of pancreatic adenocarcinoma risk, diagnostics, treatment and outcomes, while identifying gaps that aim to stimulate further research in this understudied malignancy. Pancreatic adenocarcinoma is a lethal condition with a rising incidence, predicted to become the second leading cause of cancer death in some regions. It often presents at an advanced stage, which contributes to poor five-year survival rates of 2%-9%, ranking firmly last amongst all cancer sites in terms of prognostic outcomes for patients. Better understanding of the risk factors and symptoms associated with this disease is essential to inform both health professionals and the general population of potential preventive and/or early detection measures. The identification of high-risk patients who could benefit from screening to detect pre-malignant conditions such as pancreatic intraepithelial neoplasia, intraductal papillary mucinous neoplasms and mucinous cystic neoplasms is urgently required, however an acceptable screening test has yet to be identified. The management of pancreatic adenocarcinoma is evolving, with the introduction of new surgical techniques and medical therapies such as laparoscopic techniques and neo-adjuvant chemoradiotherapy, however this has only led to modest improvements in outcomes. The identification of novel biomarkers is desirable to move towards a precision medicine era, where pancreatic cancer therapy can be tailored to the individual patient, while unnecessary treatments that have negative consequences on quality of life could be prevented for others. Research efforts must also focus on the development of new agents and delivery systems. Overall, considerable progress is required to reduce the burden associated with pancreatic cancer. Recent, renewed efforts to fund large consortia and research into pancreatic adenocarcinoma are welcomed, but further streams will be necessary to facilitate the momentum needed to bring breakthroughs seen for other cancer sites. 展开更多
关键词 Pancreatic cancer Pancreatic adenocarcinoma Pancreatic cancer risk factors Pancreatic cancer treatment
下载PDF
Corrosive injury to upper gastrointestinal tract: Still a major surgical dilemma 被引量:8
12
作者 Siew Min Keh Nzewi Onyekwelu +1 位作者 Kieran McManus Jim McGuigan 《World Journal of Gastroenterology》 SCIE CAS CSCD 2006年第32期5223-5228,共6页
In the developed and developing countries, corrosive injury to the gastrointestinal system as a consequence of either accidental ingestion or as a result of self-harm has become a less common phenomenon compared to de... In the developed and developing countries, corrosive injury to the gastrointestinal system as a consequence of either accidental ingestion or as a result of self-harm has become a less common phenomenon compared to decades ago. This could partly be attributed to the tighter legislation imposed by the government in these countries on detergents and other corrosive products and general public awareness. Most busy upper gastrointestinal surgical units in these countries, especially in the developed countries will only encounter a small number of cases per year. Up to date knowledge on the best management approach is lacking. In this article, we present our experience of two contrasting cases of corrosive injury to the upper gastrointestinal tract in our thoracic unit in the last 2 years and an up-to-date Medline literature search has been carried out to highlight the areas of controversies in the management of corrosive injuries of the upper gastrointestinal tract. We concluded that the main principle in managing such patients requires a good understanding of the pathophysiology of corrosive injury in order to plan both acute and future management. Each patient must be evaluated individually as the clinical picture varies widely. Signs and symptoms alone are an unreliable guide to injury. 展开更多
关键词 K Acid ALKALI Oesophageal stricture Endoscopy STEROIDS Oesophageal and gastric carcinoma
下载PDF
Chronic hepatitis C and liver fibrosis 被引量:22
13
作者 Giada Sebastiani Konstantinos Gkouvatsos Kostas Pantopoulos 《World Journal of Gastroenterology》 SCIE CAS 2014年第32期11033-11053,共21页
Chronic infection with hepatitis C virus(HCV) is a leading cause of liver-related morbidity and mortality worldwide and predisposes to liver fibrosis and endstage liver complications. Liver fibrosis is the excessive a... Chronic infection with hepatitis C virus(HCV) is a leading cause of liver-related morbidity and mortality worldwide and predisposes to liver fibrosis and endstage liver complications. Liver fibrosis is the excessive accumulation of extracellular matrix proteins, including collagen, and is considered as a wound healing response to chronic liver injury. Its staging is critical for the management and prognosis of chronic hepatitis C(CHC) patients, whose number is expected to rise over the next decades, posing a major health care challenge. This review provides a brief update on HCV epidemiology, summarizes basic mechanistic concepts of HCV-dependent liver fibrogenesis, and discusses meth-ods for assessment of liver fibrosis that are routinely used in clinical practice. Liver biopsy was until recently considered as the gold standard to diagnose and stage liver fibrosis. However, its invasiveness and drawbacks led to the development of non-invasive methods, which include serum biomarkers, transient elastography and combination algorithms. Clinical studies with CHC patients demonstrated that non-invasive methods are in most cases accurate for diagnosis and for monitoring liver disease complications. Moreover, they have a high prognostic value and are cost-effective. Non-invasive methods for assessment of liver fibrosis are gradually being incorporated into new guidelines and are becoming standard of care, which significantly reduces the need for liver biopsy. 展开更多
关键词 Hepatitis C virus Liver fibrosis CIRRHOSIS BIOPSY FIBROSCAN
下载PDF
Apoptosis block as a barrier to effective therapy in non small cell lung cancer 被引量:7
14
作者 Ian Paul J Mark Jones 《World Journal of Clinical Oncology》 CAS 2014年第4期588-594,共7页
Lung cancer, is the most common cause of cancer death in men and second only to breast cancer in women. Currently, the first line therapy of choice is platinumbased combination chemotherapy. A therapeutic plateau has ... Lung cancer, is the most common cause of cancer death in men and second only to breast cancer in women. Currently, the first line therapy of choice is platinumbased combination chemotherapy. A therapeutic plateau has been reached with the prognosis for patients with advanced non-small cell lung cancer(NSCLC) remaining poor. New biomarkers of prognosis as well as new therapies focusing on molecular targets are emerging helping to identify patients who are likely to benefit from therapy. Despite this, drug resistance remains the major cause for treatment failure. In this article we review the role of apoptosis in mediating drug resistance in NSCLC. Better understanding of this fundamental biological process may provide a rationale for overcoming the current therapeutic plateau. 展开更多
关键词 APOPTOSIS Lung cancer ADJUVANT THERAPY MITOCHONDRIA BAX BAK BCL2
下载PDF
Antioxidant therapy in male infertility: fact or fiction? 被引量:6
15
作者 Armand Zini Naif AI-Hathal 《Asian Journal of Andrology》 SCIE CAS CSCD 2011年第3期374-381,510,共9页
Infertile men have higher levels of semen reactive oxygen species (ROS) than do fertile men. High levels of semen ROS can cause sperm dysfunction, sperm DNA damage and reduced male reproductive potential. This obser... Infertile men have higher levels of semen reactive oxygen species (ROS) than do fertile men. High levels of semen ROS can cause sperm dysfunction, sperm DNA damage and reduced male reproductive potential. This observation has led clinicians to treat infertile men with antioxidant supplements. The purpose of this article is to discuss the rationale for antioxidant therapy in infertile men and to evaluate the data on the efficacy of dietary and in vitro antioxidant preparations on sperm function and DNA damage. To date, most clinical studies suggest that dietary antioxidant supplements are beneficial in terms of improving sperm function and DNA integrity. However, the exact mechanism of action of dietary antioxidants and the optimal dietary supplement have not been established. Moreover, most of the clinical studies are small and few have evaluated pregnancy rates. A beneficial effect of in vitro antioxidant supplements in protecting spermatozoa from exogenous oxidants has been demonstrated in most studies; however, the effect of these antioxidants in protecting sperm from endogenous ROS, gentle sperm processing and cryopreservation has not been established conclusively. 展开更多
关键词 ANTIOXIDANT male infertility oxidative stress sperm DNA fragmentation VITAMINS
下载PDF
Small bowel ulcerative lesions are common in elderly NSAIDs users with peptic ulcer bleeding 被引量:6
16
作者 Panagiotis Tsibouris Chissostomos Kalantzis +4 位作者 Periklis Apostolopoulos Antonios Zalonis Peter Edward Thomas Isaacs Mark Hendrickse Georgios Alexandrakis 《World Journal of Gastrointestinal Endoscopy》 CAS 2014年第12期612-619,共8页
AIM: To determine the frequency of small bowel ulcerative lesions in patients with peptic ulcer and define the significance of those lesions. METHODS: In our prospective study, 60 consecutive elderly patients with upp... AIM: To determine the frequency of small bowel ulcerative lesions in patients with peptic ulcer and define the significance of those lesions. METHODS: In our prospective study, 60 consecutive elderly patients with upper gastrointestinal bleeding from a peptic ulceration(cases) and 60 matched patients with a non-bleeding peptic ulcer(controls) underwent small bowel capsule endoscopy, after a negative colonoscopy(compulsory in our institution). Controls were evaluated for non-bleeding indications. Known or suspected chronic inflammatory conditions and medication that could harm the gut were excluded. During capsule endoscopy, small bowel ulcerative lesions were counted thoroughly and classified according to Graham classification. Other small bowellesions were also recorded. Peptic ulcer bleeding was controlled endoscopically, when adequate, proton pump inhibitors were started in both cases and controls, and Helicobacter pylori eradicated whenever present. Both cases and controls were followed up for a year. In case of bleeding recurrence upper gastrointestinal endoscopy was repeated and whenever it remained unexplained it was followed by repeat colonoscopy and capsule endoscopy.RESULTS: Forty(67%) cases and 18(30%) controls presented small bowel erosions(P = 0.0001), while 22(37%) cases and 4(8%) controls presented small bowel ulcers(P < 0.0001). Among non-steroidal antiinflammatory drug(NSAID) consumers, 39(95%) cases and 17(33%) controls presented small bowel erosions(P < 0.0001), while 22(55%) cases and 4(10%) controls presented small bowel ulcers(P < 0.0001). Small bowel ulcerative lesions were infrequent among patients not consuming NSAIDs. Mean entry hemoglobin was 9.3(SD = 1.4) g/d L in cases with small bowel ulcerative lesions and 10.5(SD = 1.3) g/dL in those without(P = 0.002). Cases with small bowel ulcers necessitate more units of packed red blood cells. During their hospitalization, 6(27%) cases with small bowel ulcers presented bleeding recurrence most possibly attributed to small bowel ulcers, nevertheless 30-d mortality was zero. Presence of chronic obstructive lung disease and diabetes was related with unexplained recurrence of hemorrhage in logistic regression analysis, while absence of small bowel ulcers was protective(relative risk 0.13, P = 0.05).CONCLUSION: Among NSAID consumers, more bleeders than non-bleeders with peptic ulcers present small bowel ulcers; lesions related to more severe bleeding and unexplained episodes of bleeding recurrence. 展开更多
关键词 NON-STEROIDAL anti-inflammatory drugs Aspirin Wireless capsule endoscopy Small bowel ULCERATIVE LESIONS PEPTIC ULCER bleeding
下载PDF
Endoscopic retrograde cholangiopancreatography training in the United Kingdom: A critical review 被引量:5
17
作者 Peter Isaacs 《World Journal of Gastrointestinal Endoscopy》 CAS 2011年第2期30-33,共4页
Endoscopic retrograde cholangiopancreatography training used to be in virtually all district general hospitals, resulting in a large number of trainees with an inadequate case load and achieving poor levels of skill. ... Endoscopic retrograde cholangiopancreatography training used to be in virtually all district general hospitals, resulting in a large number of trainees with an inadequate case load and achieving poor levels of skill. Training is now restricted to a small number of trai nees working in approved units. Continuous audit of outcomes and the appointment of a training lead in the unit are essential. Use of the global rating scale helps clinicians advise hospital administration on the prior it ies for a quality training program. 展开更多
关键词 ENDOSCOPIC RETROGRADE CHOLANGIOPANCREATOGRAPHY ENDOSCOPY TRAINING ENDOSCOPY quality and safety
下载PDF
Sperm nuclear histone H2B: correlation with sperm DNA denaturation and DNA stainability 被引量:3
18
作者 Armand Zini Xiaoyang Zhang Maria San Gabriel 《Asian Journal of Andrology》 SCIE CAS CSCD 2008年第6期865-871,共7页
Aim: To examine the relationship between sperm DNA damage and sperm nuclear histone (H2B) staining. Methods: We evaluated sperm samples from 14 consecutive asthenoteratozoospermic infertile men and six consecutive... Aim: To examine the relationship between sperm DNA damage and sperm nuclear histone (H2B) staining. Methods: We evaluated sperm samples from 14 consecutive asthenoteratozoospermic infertile men and six consecutive fertile controls. Sperm nuclear histone (H2B) staining and sperm chromatin integrity (assessed by sperm chromatin structure assay and expressed using the percentage of (i) DNA fragmentation index [%DFI] and (ii) high DNA stainability [%HDS)]) were evaluated. Results: Histone H2B immunocytochemistry demonstrated two nuclear staining patterns: (i) focal punctate staining; and (ii) diffuse staining. Infertile men had a higher mean percentage of spermatozoa exhibiting diffuse H2B staining than did fertile men (7.7%± 4.6% vs. 1.6% ±1.2%, respectively, P 〈 0.01). We observed significant relationships between the proportion of spermatozoa with diffuse nuclear histone staining and both sperm %DFI (r = 0.63, P 〈 0.01) and sperm %HDS (r = 0.63, P 〈 0.01). Conclusion: The data demonstrate that infertile men have a higher proportion of spermatozoa with diffuse histone H2B than do fertile men and suggest that sperm DNA damage might, at least in part, be due to abnormally high histone H2B levels. 展开更多
关键词 SPERMATOZOA sperm DNA HISTONES male infertility DNA fragmentation
下载PDF
Have patients with esophagitis got an increased risk of adenocarcinoma? Results from a population-based study 被引量:4
19
作者 Seamus J Murphy Lesley A Anderson +4 位作者 Brian T Johnston Deirdre A Fitzpatrick Peter RG Watson Pauline Monaghan Liam J Murray 《World Journal of Gastroenterology》 SCIE CAS CSCD 2005年第46期7290-7295,共6页
AIM: To examine an increased risk of esophageal adenocarcinoma is restricted to patients who develop Barrett's esophagus or whether esophagitis per se is a risk factor for adenocarcinoma.METHODS: A population-base... AIM: To examine an increased risk of esophageal adenocarcinoma is restricted to patients who develop Barrett's esophagus or whether esophagitis per se is a risk factor for adenocarcinoma.METHODS: A population-based cohort of patients with histological evidence of esophagitis without Barrett's esophagus was constructed using electronic pathology reports relating to all esophageal biopsies in Northern Ireland between 1993 and 1996. Person-years of followup and incident cases of esophageal cancer were calculated by linking the cohort to death files and the Northern Ireland Cancer Registry records. Standardized incidence ratios (SIR) were calculated for esophageal cancers (adenocarcinoma, squamous cell carcinoma (SCC), and histologically unspecified cancers).RESULTS: A total of 2 013 patients in the cohort provided 13 559 patient-years of follow-up (mean follow-up 6.7 years). None of the patients developed adenocarcinoma. Three patients developed SCC, and six developed histologically unspecified cancers. The SIR for all esophageal cancers and for SCC were 2.73 (95%CI 1.25-5.19) and 2.93 (95%CI 0.61-8.59), respectively. In a sensitivity analysis in which all unspecified esophageal cancers were treated as adenocarcinomas, the SIR for adenocarcinoma was 2.64 (0.97-5.75).CONCLUSION: The risk of adenocarcinoma is not elevated in patients with histological evidence of esophagitis without Barrett's esophagus; however, these patients may have a moderately increased risk of SCC.Further studies are required to confirm these findings,which suggest that Barrett's esophagus, not esophagitis,is the key precursor lesion in the development of adenocarcinoma. 展开更多
关键词 Barrett's esophagus Esophageal adenocardnoma Esophageal squamous cell carcinoma ESOPHAGITIS Population-based study
下载PDF
Predictors of disease severity in ulcerative colitis patients from Southwestern Ontario 被引量:4
20
作者 Lee S Roth Nilesh Chande +2 位作者 Terry Ponich Maya L Roth James Gregor 《World Journal of Gastroenterology》 SCIE CAS CSCD 2010年第2期232-236,共5页
AIM:To understand the demographic characteristics of patients in Southwestern Ontario,Canada with ulcerative colitis(UC)in order to predict disease severity. METHODS:Records from 1996 to 2001 were exam- ined to create... AIM:To understand the demographic characteristics of patients in Southwestern Ontario,Canada with ulcerative colitis(UC)in order to predict disease severity. METHODS:Records from 1996 to 2001 were exam- ined to create a database of UC patients seen in the London Health Sciences Centre South Street Hospital Inflammatory Bowel Disease Clinic.To be included, patients'charts were required to have information of their disease presentation and a minimum of 5 years of follow-up.Charts were reviewed using standardized data collection forms.Disease severity was generated during the chart review process,and non-endoscopic Mayo Score criteria were collected into a composite. RESULTS:One hundred and two consecutive patients'data were entered into the database.Demographic analyses revealed that 51%of the patients were male, the mean age at diagnosis was 39 years,13.7%had a first degree relative with inflammatory bowel disease (IBD),61.8%were nonsmokers and 24.5%were ex-smokers.In 22.5%of patients the disease was limited to the rectum,in 21.6%disease was limited to the sigmoid colon,in 22.5%disease was limited to the left colon,and 32.4%of patients had pancolitis. Standard multiple regression analysis which regressed a composite of physician global assessment of disease severity,average number of bowel movements,and average amount of blood in bowel movements on year of diagnosis and age at time of diagnosis was significant,R 2=0.306,F(7,74)=4.66,P<0.01. Delay from symptoms to diagnosis of UC,gender, family history of IBD,smoking status and disease severity at the time of diagnosis didnot significantly predict the composite measure. CONCLUSION:UC severity is associated with younger age at diagnosis and year of diagnosis in a longitudinal cohort of UC patients,and may identify prognostic UC indicators. 展开更多
关键词 DEMOGRAPHIC Disease severity PROGNOSIS Ulcerative colitis
下载PDF
上一页 1 2 5 下一页 到第
使用帮助 返回顶部