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1高龄对男性生育力的影响显示文摘在过去的几十年里,现代社会的压力和期望使得育龄夫妇生育年龄总体推迟。已知女性在临近40岁时卵母细胞的产生将会明显减少,而高龄对男性精子生成能力的影响还知之甚少。男性生育年龄无明确限制,因而高龄对男性生育能力的影响还不完全清楚。本文将就目前已知的高龄对男性精子质量、生育能力和子代健康的影响进行综述,希望能在医生就男性推迟生育及高龄相关的风险咨询时起到一定的指导作用。Jason R Kovac Josephine Addai Ryan P Smith Robert M Coward Dolores J Lamb Larry I Lipshultz 2013Asian Journal of Andrology2013,15,6:12
2Nat Chem Biol:利用CRISPR-Cas9激活细菌中沉默的基因簇,有望发现新的药物显示文摘为了抵抗疾病,很多医药库中的武器是从细菌当中获得的。如今,利用CRISPR-Cas9基因编辑技术。研究人员揭示出沉默基因中隐藏着的更多潜在的宝藏。作为一类常见的细菌。链霉菌被用来产生很多作为抗生素、抗癌试剂和其他药物的化合物。在一项新的研究中。来自美国伊利诺伊大学和新加坡科技研究局的研究人员利用CRISPR-Cas9技术激活链霉菌中不表达的或者说沉默的基因簇。Mingzi M Zhang, Wan Lin Yeo, Ee Lui Ang, Huimin Zhao Fong Tian Wong, Elena Heng Yajie Wang, Shangwen Luo, Ryan E Cobb, Behnam Enghiad, Huimin Zhao Yee Hwee Lim 2017现代生物医学进展2017,17,17:12
3Cytokines,cytokine gene polymorphisms and Helicobacter pylori infection:Friend or foe?显示文摘Helicobacter pylori(H.pylori)is a flagellated,spiralshaped,microaerophilic Gram-negative bacillus that colonises the gastric mucosa of more than 50%of the human population.Infection is a risk factor for gastritis,ulcer disease and stomach cancer.Immunity against H.pylori is mainly related to Th1/Th17 skewing,and the activation of regulatory T cells is the main strategy used to limit inflammatory responses,which can result in the pathogen persistence and can lead to chronic gastrointestinal diseases,including cancer.Furthermore,host genetic factors that affect cytokines may determine differences in the susceptibility to many diseases.In this review,we present the cytokine profiles and the main cytokine gene polymorphisms associated with resistance/susceptibility to H.pylori and discuss how such polymorphisms may influence infection/disease outcomes.Camila A Figueiredo Cintia Rodrigues Marques Ryan dos Santos Costa Hugo Bernardino F da Silva Neuza M Alcantara-Neves 2014World Journal of Gastroenterology2014,20,18:11
4Augmented reality assisted surgery: a urologic training tool显示文摘扩充现实广泛地在航空学被使用并且是在外科以内的一个发展中的概念。在这个预研项目,我们在古格尔·格拉斯 ® 上为使用开发了一个应用程序训练在怎么放可膨胀的阴茎修复术的泌尿学居民的光装头的显示。我们使用扩充的短语现实帮助了外科在外科的设置描述扩充现实的这个新奇应用程序。应用程序表明可膨胀的阴茎修复术放置的外科的过程的步。它也包含允许的软件用一个照相机的点从光装头的显示喂使教师能在阴茎修复术的放置期间与居民一起交往的兴趣的察觉。自愿参加学习的泌尿学受训练者和教师被给时间经历技术在起作用或 perioperative 背景并且要求完成反馈调查。从用 10 点规模的 30 个全部的参加者,教育实用性被评估 8.6,航行的容易被评估 7.6,到使用的可能性的被评估 7.4,并且在操作空间的分心被评估 4.9。当在受训练者和教师之间成层时,受训练者发现技术更教育有用,并且少些分散。总的来说, 81% 参加者在他们的住处程序想要这种技术,并且 93% 以后在操作房间里看见这种技术。这种技术的进一步的开发在完整的版本前被保证,并且进一步的研究是必要的更好描绘扩充现实的有效性在泌尿科的外科的训练的帮助外科。Ryan M Dickey Neel Srikishen Larry I Lipshultz Philippe E Spiess Rafael E Carrion Tariq S Hakky 2016Asian Journal of Andrology2016,18,5:6
5Ki67 in breast cancer: prognostic and predictive potential显示文摘Rinat Yerushalmi Ryan Woods Peter M Ravdin Malcolm M Hayes Karen A Gelmon 2010Lancet Oncology2010,,2:4
6p53-mediated transcriptional regulation and activation of the actin cytoskeleton regulatory RhoC to LIMK2 signaling pathway promotes cell survival显示文摘响应 DNA 损坏的房间命运的中央仲裁人是 p53,它调整涉及房间周期拘捕,幸存和 apoptosis 的基因的表示。尽管 DNA 损坏开始的许多回答被描绘了,肌动朊细胞骨架管理者的角色大部分是未知的。我们现在显示出那 RhoC 和秘鲁利玛机场之代号 kinase (LIMK2 ) 2 是 genotoxic 代理人导致的直接 p53 目标基因。尽管 RhoC 和 LIMK2 在肌动朊细胞骨架规定有生长得很好的角色,我们的结果显示 LIMK2 的激活也有支持幸存的功能追随者 DNA 损坏。由调停 siRNA 的击倒或选择的药理学封锁的 LIMK 抑制敏化房间到无线电 -- 或化疗,以便当与 LIMK 抑制结合了时,当单身地管理了时,是尚不致命的治疗导致了房间死亡。我们的调查结果建议把 LIMK 禁止者与 genotoxic 治疗相结合能比单个代理人的管理更有效,并且加亮在肌动朊细胞骨架管理者和 DNA 之间的一个新奇连接导致损坏的房间幸存机制。Daniel R Croft Diane Crighton Michael S Samuel Filipe C Lourenco June Munro Jenifer Wood Karim Bensaad Karen H Vousden Owen J Sansom Kevin M Ryan Michael F Olson 2011Cell Research2011,21,4:3
7Advances in cirrhosis: Optimizing the management of hepatic encephalopathy显示文摘Hepatic encephalopathy(HE) is a major complication of cirrhosis resulting in significant socioeconomic burden, morbidity, and mortality. HE can be further subdivided into covert HE(CHE) and overt HE(OHE). CHE is a subclinical, less severe manifestation of HE and requires psychometric testing for diagnosis. Due to the time consuming screening process and lack of standardized diagnostic criteria, CHE is frequently underdiagnosed despite its recognized role as a precursor to OHE. Screening for CHE with the availability of the Stroop test has provided a pragmatic method to promptly diagnose CHE. Management of acute OHE involves institution of lactulose, the preferred first-line therapy. In addition, prompt recognition and treatment of precipitating factors is critical as it may result in complete resolution of acute episodes of OHE. Treatment goals include improvement of daily functioning, evaluation for liver transplantation, and prevention of OHE recurrence. For secondary prophylaxis, intolerance to indefinite lactulose therapy may lead to non-adherence and has been identified as a precipitating factor for recurrent OHE. Rifaximin is an effective add-on therapy to lactulose for treatment and prevention of recurrent OHE. Recent studies have demonstrated comparable efficacy of probiotic therapy to lactulose use in both primary prophylaxis and secondary prophylaxis.Andy Liu Ryan B Perumpail Radhika Kumari Zobair M Younossi Robert J Wong Aijaz Ahmed 2015World Journal of Hepatology2015,7,29:3
8Clinical classification of symptomatic heterotopic pancreas of the stomach and duodenum:A case series and systematic literature review显示文摘BACKGROUND Heterotopic pancreas(HP)is an aberrant anatomic malformation that occurs most commonly in the upper gastrointestinal tract.While the majority of heterotopic pancreatic lesions are asymptomatic,many manifest severe clinical symptoms which require surgical or endoscopic intervention.Understanding of the clinical manifestations and symptoms of HP is limited due to the lack of large volume studies in the literature.The purpose of this study is to review symptomatic cases at a single center and compare these to a systematic review of the literature in order to characterize common clinical manifestations and treatment of this disease.AIM To classify the common clinical manifestations of heterotopic pancreas.METHODS A retrospective review was conducted of pathologic samples containing heterotopic pancreas from 2000-2018.Review was limited to HP of the upper gastrointestinal tract due to the frequency of presentation in this location.Symptomatic patients were identified from review of the medical records and clinical symptoms were tabulated.These were compared to a systematic review of the literature utilizing Pub Med and Embase searches for papers pertaining to heterotopic pancreas.Publications describing symptomatic presentation of HP were selected for review.Information including demographics,symptoms,presentation and treatment were compiled and analyzed.RESULTS Twenty-nine patient were identified with HP at a single center,with six of these identified has having clinical symptoms.Clinical manifestations included,gastrointestinal bleeding,gastric ulceration with/without perforation,pancreatitis,and gastric outlet obstruction.Systemic review of the literature yielded 232 publications detailing symptomatic cases with only 20 studies describing ten or more patients.Single and multi-patient studies were combined to form a cohort of 934 symptomatic patients.The majority of patients presented with abdominal pain(67%)combined with one of the following clinical categories:(1)Dyspepsia,(n=445,48%);(2)Pancreatitis(n=260,28%);(3)Gastrointestinal bleeding(n=80,9%);and(4)Gastric outlet obstruction(n=80,9%).The majority of cases(n=832,90%)underwent surgical or endoscopic resection with 85%reporting resolution or improvement in their symptoms.CONCLUSION Heterotopic pancreas can cause significant clinical symptoms in the upper gastrointestinal tract.Better understanding and classification of this disease may result in more accurate identification and treatment of this malformation.Michael T Le Compte Brandon Mason Keenan J Robbins Motoyo Yano Deyali Chatterjee Ryan C Fields Steven M Strasberg William G Hawkins 2022World Journal of Gastroenterology2022,28,14:3
9Hzf and hCAS/CSEIL: making the right choice in p53-mediated tumour suppression显示文摘Katherine E Ewings Kevin M Ryan 2007Cell Research2007,17,10:2
10Antagonism of miR-33 in mice promotes reverse cholesterol transport and regression of atherosclerosis显示文摘Rayner Katey J Sheedy Frederick J Esau Christine C Hussain Farah N Temel Ryan E Parathath Saj van Gils Janine M Rayner Alistair J Chang Aaron N Suarez Yajaira Fernandez-Hernando Carlos Fisher Edward A Moore Kathryn J 2011Journal of Clinical Investigation2011,,7:2
11Critical Evaluation of Pulmonary Contusion in the Early Post-Traumatic Period: Risk of Assisted Ventilation显示文摘Hamrick Miller C Duhn Ryan D Ochsner M Gage 2009The American Surgeon2009,,11:2
12Statin use and cognitive function in middle-aged adults with type 1 diabetes显示文摘AIM To test associations between statin use and cognitive impairment in adults with childhood-onset type 1 diabetes(T1D).METHODS In 2010-13, n = 108 middle-aged participants from ongoing observational Pittsburgh Epidemiology of Diabetes Complications Study underwent neurocognitive assessment(mean age and T1 D duration of 49 and 41 years, respectively). All were diagnosed with childhoodonset(i.e., prior to age 18) T1 D between 1950 and 1980 and were seen within one year of diagnosis at Children's Hospital of Pittsburgh. Self-reported statin use(yes/no and if yes, name of statin) was collected biennially from parent study baseline(1986-1988) to time of neurocognitive testing. Logistic regression models tested associations between statin use groups and cognitive impairment(defined as having two or more cognitive test scores 1.5SD or worse than published norms) while linear regression models tested associations between statin use groups and cognitive domain z-scores(domains: Verbal IQ, memory, executive function, psychomotor speed, and visuo-construction). All models controlled for education and age. To address confounding by indication, models were repeated using a propensity score for statin use.RESULTS Of the 108 participants, 51 reported never using statins. Median duration of statin use among the 57 ever users was 6 years. These 57 ever statin users were split to create two groups(≤ or > median years of statin use): 1-6 years(n = 25), and 7-12 years(n = 32). Compared with never users, using statins 1-6 years tripled the odds of cognitive impairment(OR = 3.16; 95%CI: 0.93-10.72; P = 0.06) and using statins 7-12 years almost quintupled the odds of cognitive impairment(OR = 4.84; 95%CI: 1.63-14.44; P = 0.005). Compared with never users, using statins 1-6 or 7-12 years was related to worse performance in the memory domain(β =-0.52; P = 0.003, and-0.39; P = 0.014, respectively). Adjusting for coronary artery disease, low density lipoprotein cholesterol, and Apo E4 status did not substantially alter results, and none of these covariates were significantly related to cognitive outcomes(all P > 0.05). Propensity score analyses support that associations between poor cognitive outcomes and statin use were not due merely to confounding by indication. CONCLUSION Statin use was associated with cognitive impairment, particularly affecting memory, in these middle-aged adults with childhood-onset T1 D, whom at this age, should not yet manifest age-related memory deficits.Karen A Nunley Trevor J Orchard Christopher M Ryan Rachel Miller Tina Costacou Caterina Rosano 2017World Journal of Diabetes2017,8,6:2
13CD133 expression is not restricted to stem cells, and both CD133^sup +^ and CD133^sup -^ metastatic colon cancer cells initiate tumors显示文摘Shmelkov Sergey V Butler Jason M Hooper Andrea T Hormigo Adilia Kushner Jared Milde Till Clair Ryan St Baljevic Muhamed White Ian Jin David K Chadburn Amy Murphy Andrew J Valenzuela David M Gale Nicholas W Thurston Gavin Yancopoulos George 2008Journal of Clinical Investigation2008,,:2
14Prevalence and factors of work-related musculoskeletal disorders among hand surgeons显示文摘BACKGROUND The nature of tasks required by hand surgeons require both forceful and repetitive maneuvers,thus subjecting these surgeons to the risk of musculoskeletal(MSK)injuries during their years in practice.AIM To assess the prevalence,characteristics and impact of MSK disorders among hand surgeons.METHODS A modified version of the physical discomfort survey was sent to surgeons who were members of the American Society for Surgery of the Hand via e-mail.The collected data were analyzed using descriptive statistics,one-way analysis of variance,and Fisher’s exact test.P values of<0.05 were considered statistically significant.RESULTS Of the 578 respondents,60.4%reported that they had sustained a work-related MSK injury,of which the most common diagnoses were lateral elbow epicondylitis(18.7%),low back pain(17.1%)and carpal tunnel syndrome(15.6%).Among those that reported an injury,73.1%required treatment and 29.2%needed time off work as a direct result of their injury.The number of work-related injuries incurred by a surgeon increased significantly with increasing age(P<0.003),increasing years in practice(P<0.001)and higher case load(P<0.05).CONCLUSION To our knowledge this study is the first of its kind to assess MSK injuries sustained by Hand surgeons with a high incidence.These results should increase awareness on this aspect and fuel future studies directed at preventing these types of work-related injuries,thus minimizing the financial and psychological burden on these surgeons and the healthcare system.Saad M Alqahtani Mohammad M Alzahrani Ryan Bicknell David Pichora 2022World Journal of Orthopedics2022,13,5:2
15Is Ulnar Nerve Transposition Beneficial During Open Reduction Internal Fixation of Distal Humerus Fractures?显示文摘Ryan C Chen David J Harris Stephane Leduc Joseph J Borrelli Paul Tornetta William M Ricci 2010Journal of Orthopaedic Trauma2010,,7:2
16Central line-associated bloodstream infection among children with biliary atresia listed for liver transplantation显示文摘BACKGROUND Pre-transplant nutrition is a key driver of outcomes following liver transplantation in children.Patients with biliary atresia(BA) may have difficulty achieving satisfactory weight gain with enteral nutrition alone,and parenteral nutrition(PN) may be indicated.While PN has been shown to improve anthropometric parameters of children with BA listed for liver transplantation,less is known about the risks,particularly infectious,associated with this therapy among this specific group of patients.AIM To describe the incidence,microbiology,and risk factors of central line-associated bloodstream infection(CLABSI) among children with BA listed for liver transplantation.METHODS Retrospective review of children aged ≤ 2-years of age with BA who were listed for primary liver transplantation at Texas Children's Hospital from 2008 through2015(n = 96).Patients with a central line for administration of PN(n = 63) were identified and details of each CLABSI event were abstracted.We compared the group of patients who experienced CLABSI to the group who did not,to determine whether demographic,clinical,or laboratory factors correlated with development of CLABSI.RESULTS Nineteen of 63 patients(30%,95%CI:19,43) experienced 29 episodes of CLABSI during 4800 line days(6.04 CLABSI per 1000 line days).CLABSI was predominantly associated with Gram-negative organisms(14/29 episodes,48%)including Klebsiella spp.,Enterobacter spp.,and Escherichia coli.The sole polymicrobial infection grew Enterobacter cloacae and Klebsiella pneumoniae.Grampositive organisms(all Staphylococcus spp.) and fungus(all Candida spp.)comprised 9/29(31%) and 6/29(21%) episodes,respectively.No demographic,clinical,or laboratory factors were significantly associated with an increased risk for the first CLABSI event in Cox proportional hazards regression analysis CONCLUSION There is substantial risk for CLABSI among children with BA listed for liver transplantation.No clinical,demographic,or laboratory factor we tested emerged as an independent predictor of CLABSI.While our data did not show an impact of CLABSI on the short-term clinical outcome,it would seem prudent to implement CLABSI reduction strategies in this population to the extent that each CLABSI event represents potentially preventable hospitalization,unnecessary healthcare dollar expenditures,and may exact an opportunity cost,in terms of missed allograft offers.Nicole D Triggs Stacey Beer Sonam Mokha Kat Hosek Danielle Guffey Charles G Minard Flor M Munoz Ryan W Himes 2019World Journal of Hepatology2019,11,2:2
17Evidence for colorectal sarcomatoid carcinoma arising from tubulovillous adenoma显示文摘Sarcomatoid carcinomas of the colorectum are rare tu- mors that display both malignant epithelial and stromal components. Clinically, they are aggressive tumors with early metastasis. Due to their infrequent occurrence, the pathogenesis is poorly understood. We report a case of a 52-year-old woman who presented with a rectal mass and intermittent hematochezia. Superficial biopsies during colonoscopy revealed a tubulovillous adenoma with high-grade dysplasia. Endoscopic ultra- sonography confirmed an invasive nature of the mass, and deeper biopsies revealed the presence of neoplasm with mixed histological components. The surgically- excised specimen demonstrated the presence of poorly differentiated spindle cells underneath the tubulovillous adenoma and an intermediate stage of invasive adeno- carcinoma. Based on the histological appearance and immunohistochemical studies, a diagnosis of sarcoma- toid carcinoma was made. Only nine cases of sarcoma- toid carcinomas of the colorectum have been reported to date. As a result, the terminology and pathogenesis of sarcomatoid carcinoma remain speculative. To the best of our knowledge, this is the first report of co- existence of sarcomatoid carcinoma and invasive ad- enocarcinoma with tubulovillous adenoma; all stages represented within the same tumor. This observation supports the 'monoclonal theory' of pathogenesis with an adenoma-sarcoma progression with or without an intermediate stage of carcinoma.Jeffrey K Lee Pradipta Ghosh Valerie McWhorter Misty Payne Ryan Olson Mary L Krinsky Sonia Ramamoorthy John M Carethers 2008World Journal of Gastroenterology2008,14,27:2
18Modern treatment strategies for penile prosthetics in Peyronie’s disease:a contemporary clinical review显示文摘Peyronie's disease is a common condition resulting in penile deformity,psychological bother,and sexual dysfunction.Erectile dysfunction is one common comorbid condition seen in men with Peyronie’s disease,and its presence significantly impacts treatment considerations.In a man with Peyronie's disease and significant erectile dysfunction who desires the most reliable treatment,penile prosthesis placement should be strongly considered.In some instances,such as those patients with relatively mild curvature,prosthesis placement alone may result in adequate straightening.However,many patients will require additional straightening maneuvers such as manual modeling,penile plication,and tunica albuginea incision with or without grafting.For patients with severe penile shortening,penile length restoration techniques may also be considered.Herein,we provide a comprehensive clinical review of penile prosthesis placement in men with Peyronie's disease.Specifically,we discuss preoperative indications,intraoperative considerations,adjunctive straightening maneuvers,and postoperative outcomes.Matthew J Ziegelmann M Ryan Farrell Laurence A Levine 2020Asian Journal of Andrology2020,22,1:2
19Role of MAP kinase pathways in mediating IL- 6 production in human primary mesangial and proximal tubular cells显示文摘Leonard M Ryan MP Watson AJ 1999Kidney Int1999,56,4:2
20A MyD88-dependent IFNyR-CCR2 signaling circuit is required for mobilization of monocytes and host defense against systemic bacterial challenge显示文摘Eric M Pietras Lloyd S Miller Carl T Johnson Ryan M O'Connell Paul W Dempsey Genhong Cheng 2011Cell Research2011,21,7:2
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