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‘You’re a girl, You’re Black, You’re poor’ “你是个女孩,你是黑人,你很穷”
Pub Date : 2021-07-19 DOI: 10.37707/jnds.v2i3.165
Susannah M Black, Hibatullah Abuelgasim
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引用次数: 0
The chronic ear: A case report of bilateral cholesteatoma in a 10-year-old boy 慢性耳:10岁男童双侧胆脂瘤1例
Pub Date : 2021-07-19 DOI: 10.37707/jnds.v2i3.152
Mate Naszai, J. Ramsden
Cholesteatoma is a rare condition affecting 9-12.6 adults and 3-15 children per 100,000 per annum [1–4], with a more aggressive presentation in the paediatric population [5]. Intermittent otorrhea (ear discharge) is the presenting complaint in over half of cholesteatoma patients [6, 7]. The peak incidence of cholesteatoma is 5-15 years of age [8] which overlaps significantly with a period of high incidence in otitis media [9] and externa [10], diseases that often present the same way as cholesteatoma. This results in diagnosis that may take several years. Left untreated, cholesteatoma can cause significant lasting damage in the form of deafness, vertigo, facial paralysis, meningitis, and brain abscesses which may prove fatal [11]. Current treatment options are limited to surgical excision with the aim to establish a safe and manageable ear, while maintaining hearing is secondary. Improving surgical instrumentation has allowed a better success rate, however, revision surgeries remain a mainstay of practice. In practical terms, this means that those affected by bilateral disease often undergo surgery 4 or more times [12]. This represents a significant burden for patients. The decision about the exact surgical approach (canal wall up vs canal wall down) is a careful balancing act of safety versus functionality, and the pros and cons must be weighed in light of available evidence and the skill of the surgeon [13].
胆脂瘤是一种罕见的疾病,每年每10万人中有9-12.6名成人和3-15名儿童患胆脂瘤[1-4],在儿科人群中表现更为积极[5]。间歇性耳漏(耳液)是一半以上胆脂瘤患者的主诉[6,7]。胆脂瘤的发病高峰期为5-15岁[8],与中耳炎[9]和外耳炎[10]的高发期有明显重叠,这两种疾病的发病方式常与胆脂瘤相同。这导致诊断可能需要数年时间。如果不及时治疗,胆脂瘤会造成严重的持久损害,表现为耳聋、眩晕、面瘫、脑膜炎和脑脓肿,这可能是致命的[11]。目前的治疗选择仅限于手术切除,目的是建立一个安全和可管理的耳朵,而维持听力是次要的。手术器械的改进提高了手术成功率,然而,翻修手术仍然是实践的主要内容。在实践中,这意味着双侧病变患者通常需要进行4次或更多次手术[12]。这对患者来说是一个很大的负担。决定确切的手术入路(管壁向上还是管壁向下)需要仔细权衡安全性与功能性,利弊必须根据现有证据和外科医生的技能进行权衡[13]。
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引用次数: 0
Approaching academic writing as a medical student; tips and tricks 从医学生的角度探讨学术写作提示和技巧
Pub Date : 2021-07-19 DOI: 10.37707/jnds.v2i3.171
S. Black, Kwame Baffour-Awuah
Approaching academic writing as a medical student; tips and tricks No abstract - Editorial
从医学生的角度探讨学术写作没有摘要-社论
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引用次数: 0
Management of Vascular Graft Infection 血管移植感染的处理
Pub Date : 2020-04-05 DOI: 10.37707/jnds.v1i3.78
Harry Ward, D. Howard
This case report focuses on the risk factors, diagnosis, and management of vascular graft infections. A complex and intriguing case is presented and the latest evidence on aetiology and management of this challenging condition are summarised. The contention regarding the diagnostic criteria for graft infection is addressed, and how different imaging modalities and genetic or systemic biomarkers could aid this diagnostic process. Key management challenges are also discussed. Firstly, the difficulties of penetration and efficacy of antimicrobials and the issues surrounding biofilm formation. Secondly, the different surgical options such as graft preservation with partial excision or muscle flap coverage, or excision and revascularisation. Further, the type of explant and the latest innovations in the field of biological grafts are considered. Overall, this case report brings to the fore the lack of structured guidelines and level 1 evidence for the diagnosis and management of vascular graft infection, and calls for a more structured, unified, multi-disciplinary approach.
本病例报告的重点是血管移植感染的危险因素,诊断和管理。提出了一个复杂而有趣的病例,并总结了这一具有挑战性的疾病的病因和管理的最新证据。关于移植物感染诊断标准的争论得到了解决,以及不同的成像方式和遗传或系统生物标志物如何有助于这一诊断过程。还讨论了关键管理挑战。首先,抗菌剂渗透和功效的困难以及围绕生物膜形成的问题。其次,不同的手术选择,如移植物保留部分切除或肌瓣覆盖,或切除和血运重建术。此外,还介绍了外植体的类型和生物移植物领域的最新进展。总的来说,本病例报告突出了血管移植感染诊断和管理缺乏结构化指南和一级证据,并呼吁建立更结构化,统一,多学科的方法。
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引用次数: 0
Recombinant Nidogen-1 Significantly Improves Survival of Hypoxic Human Islets 重组Nidogen-1显著提高缺氧人胰岛的存活率
Pub Date : 2020-02-01 DOI: 10.37707/jnds.v1i2.91
D. Brandhorst
Daniel Brandhorst,1,2 Heide Brandhorst,1,2 Samuel Acreman,1,2 Yukari Kimura,1,2 Shannon Layland,3 Katja Schenke-Layland,3 Paul R.V. Johnson1,2 1 Research Group for Islet Transplantation, Nuffield Department of Surgical Sciences, John Radcliffe Hospital, University of Oxford, Oxford, United Kingdom 2 Oxford Consortium for Islet Transplantation, Oxford Centre for Diabetes, Endocrinology, and Metabolism (OCDEM), Churchill Hospital, University of Oxford, Oxford, United Kingdom 3 Natural and Medical Sciences Institute, Eberhard Karls University, Tübingen, Germany Aim Islet isolation essentially requires dissociation of the islet basement membrane by collagenolytic enzymes. Basement membrane loss is associated with reduced islet function and viability. Previous studies demonstrated that individual extracellular matrix proteins (ECMPs) can increase islet survival pre- and post-transplant. In the present study, we tested our hypothesis, that the combination of different ECMPs, particularly those forming suprastructures, are more efficient than individual ECMPs to protect human islets from hypoxia-induced damage. In contrast to previous studies, we dissolved ECMPs in the media rather than to coat culture surfaces. Methods Islets, isolated from pancreases of 11 human DBD donors (50±2 years, 29.3±1.2 BMI, 5.7±0.3 hours CIT), were cultured for 3–4 days in 2% oxygen and suspended in CMRL 1066 (2% FCS) supplemented with either 40 µg/mL of dissolved collagen-IV, 10 µg/mL laminin-521 or 12.5 µg/mL nidogen-1 used individually or as combination. Sham-treated islets (STIs) cultured without ECMPs served as controls. Post-culture characterisation included IEQ yield or islet number (IN), viability (FDA-PI), early plus late apoptosis (annexin V-PI), glucose stimulation index (SI: 2 vs 20 mM) and reactive oxygen species production. Parameters were normalised to IEQ, related to pre-culture data if appropriate and presented as mean ± SEM. Statistical analysis was performed by Friedman test followed by Dunn’s multiple comparison. Results Compared with STI (41±7%), post-culture recovery was higher when hypoxic islets were treated with collagen-IV (64±7%, p<0.001), laminin-521 (57±6%, p<0.01) or nidogen-1 (65±6%, p<0.001) used individually or combined (61±7% p<0.001). This correlated with islet fragmentation (IN/IEQ ratio) that was lower when collagen-IV (116±13%, p<0.001), laminin-521 (114±12%, p<0.01), nidogen-1 (121±12%, p<0.01) or combined ECMPs (119±13%, p<0.001) were compared with STIs (155±16%). Reactive oxygen species production in STIs was substantially reduced by 71±6% (NS), 73±6% (p<0.05), 90±2% (p<0.001), and 87±4% (p<0.001) in presence of collagen-IV, laminin-521, nidogen-1 or combined ECMPs, respectively. This resulted in improved viability (83±7% [p<0.01], 79±9% [p<0.01], 84±7% [p<0.001], 83±8% [p<0.001]) compared with STIs (63±7%). While individual ECMPs stabilised or reduced pre-culture apoptosis (94±17% [p<0.05], 117±16% [p<0.05], 68±13% [p<0.001])
Daniel Brandhorst,1,2 Heide Brandhorst,1,2 Samuel Acreman,1,2 Yukari Kimura,1,2 Shannon Layland,3 Katja Schenke-Layland,3 Paul R.V. johnson 1,2 1,2英国牛津大学牛津大学约翰拉德克利夫医院纳菲尔德外科医学院胰岛移植研究组2牛津胰岛移植联盟,牛津大学糖尿病、内分泌和代谢中心(OCDEM),牛津大学丘吉尔医院,牛津,牛津,英国3 Eberhard Karls大学自然与医学研究所,德国宾根(tbingen) Aim胰岛分离本质上需要用胶原溶解酶解离胰岛基底膜。基底膜损失与胰岛功能和生存能力降低有关。先前的研究表明,单个细胞外基质蛋白(ECMPs)可以增加移植前和移植后胰岛的存活率。在本研究中,我们验证了我们的假设,即不同ecmp的组合,特别是那些形成上层结构的ecmp,比单个ecmp更有效地保护人类胰岛免受缺氧引起的损伤。与之前的研究相反,我们将ecmp溶解在培养基中,而不是包覆在培养表面。方法从11例DBD供体(50±2岁,29.3±1.2 BMI, 5.7±0.3小时CIT)胰腺中分离胰岛,在2%氧气条件下培养3-4天,悬浮在CMRL 1066 (2% FCS)中,分别添加40µg/mL溶解的collagen-IV、10µg/mL laminin-521或12.5µg/mL nidogen-1单独或联合使用。无ecmp培养的假处理胰岛(STIs)作为对照。培养后的特征包括IEQ产量或胰岛数量(IN)、活力(FDA-PI)、早期和晚期细胞凋亡(膜联蛋白V-PI)、葡萄糖刺激指数(SI: 2 vs 20 mM)和活性氧产生。参数归一化为IEQ,如果合适,与培养前数据相关,并以平均值±SEM表示。采用Friedman检验和Dunn多重比较进行统计分析。结果与STI(41±7%)相比,单独或联合使用collagen-IV(64±7%,p<0.001)、laminin-521(57±6%,p<0.01)或nidogen-1(65±6%,p<0.001)治疗缺氧胰岛的培养后恢复率更高(61±7%,p<0.001)。这与胰岛碎片化(IN/IEQ)相关,胶原- iv(116±13%,p<0.001)、层粘连蛋白-521(114±12%,p<0.01)、氮化原-1(121±12%,p<0.01)或联合ECMPs(119±13%,p<0.001)比sti(155±16%)更低。胶原- iv、laminin-521、nidogen-1或联合ECMPs存在时,sti中活性氧的产生分别显著减少71±6% (NS)、73±6% (p<0.05)、90±2% (p<0.001)和87±4% (p<0.001)。结果表明,与性传播感染(63±7%)相比,生存能力(83±7% [p<0.01], 79±9% [p<0.01], 84±7% [p<0.001], 83±8% [p<0.001])有所提高。单个ECMPs稳定或减少培养前细胞凋亡(94±17% [p<0.05], 117±16% [p<0.05], 68±13% [p<0.001]),联合ECMPs(171±18%,NS)与STIs(196±28%)相等。与使用胶原- iv(1.76±1.18 [p<0.01])、层粘连蛋白-521(1.53±0.25 [NS])、nidogen-1(2.27±0.67 [p<0.01])或联合ECMPs(1.95±0.25 [p<0.05])治疗后的生理性胰岛素应答相比,STIs在葡萄糖刺激后不能充分分泌胰岛素(SI 0.97±0.13)。结论在三种不同的ECMPs中,nidogen-1似乎对保护人类胰岛免受缺氧损伤最有效。由于其保护效率部分超过联合ecmp,我们不得不拒绝我们的假设。需要进一步的研究来阐明胶原- iv、层粘连蛋白-521和nidogen-1是否在体外自发组装到上层结构上。
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引用次数: 1
Ex Vivo Normothermic Perfusion, a Novel Method to Assess Pancreases after Preservation 体外恒温灌注:一种评估保存后胰腺的新方法
Pub Date : 2020-01-30 DOI: 10.37707/jnds.v1i2.86
Julien Branchereau, Etohan Ogbemudia
Julien Branchereau1,2* and Etohan Ogbemudia1*, Kaithlyn Rozenberg1, Fungai Dengu1, Gabriella Hakim1, Flavia Neri1, Georg Ebeling1, Letizia Lo Faro1, James Hunter1, Rutger Ploeg1* and Peter Friend1* * "Authors contributed equally to this work" 1-Nuffield Department of Surgical Sciences - University of Oxford 2-Nantes Hospital University - France Introduction Static cold storage (SCS) of pancreases remains the current standard method for preservation prior to transplantation. Pulsatile hypothermic machine perfusion (HMP) is an emerging method that could potentially improve the preservation of pancreases to enhance graft function. This is based on personal extensive experience with HMP of pancreases in human, porcine allotransplantation and large non-human primate models. All models consistently showed preservation of pancreatic parenchyma on histological assessment for up to 24hours. To provide reassurance of organ viability prior to transplantation further investigations are necessary. We propose that normothermic perfusion (NMP) of pancreases after cold preservation allows necessary functional and physiological assessments. Method Porcine pancreases (3) were retrieved from the slaughterhouse after 30 minutes of warm ischaemia and were flushed. After 3 hours of cold ischaemia two pancreases were perfused by HMP (Wave machine; Waters Medical Systems) for 6 hours followed by 1 hour of NMP. One pancreas after 3 hours of CIT was placed on NMP for 2.5hours, this was the first pancreas NMP to assess feasibility of this technique.NMP was achieved by modification of the kidney assist device. Oxygenation was with 21% oxygen. The pancreases were cannulat ed via the aorta with free drainage of perfusate from the portal vein. NMP parameters for all pancreases were a pressure of 40mmHg and temperature of 37C. Perfusate was composed of red blood cells, plasma to provide a haematocrit of 25%, with additives of co-amoxiclav and 25,000IU of heparin. During the perfusions we collected serial perfusate samples for blood gas analysis and for insulin enzyme-linked immunosorbent assay (ELISA). Results The macroscopic appearance of the pancreases and the attached duodenum at the end of NMP appeared viable. Average resistance index during NMP was 0.62 ru (range 0.30 to 0.90 ru). Average flow rate was 77mls/min (range 53 to 100 mls/min). Throughout, the duration of NMP in the two pancreases perfused for one-hour lactate remain stable with no increase from baseline. In the one pancreas perfused for 2.5hours lactate was also stable in the first hour then increased by 50% during the last 1.5hours of perfusion. ELISA confirmed the presence of insulin in the perfusate for all three perfusions. Conclusion Normothermic perfusion is a feasible method to allow physiological and functional assessment of pancreases after cold preservation techniques encouraging us to further develop this model.  
Julien branchereau1,2 *和Etohan Ogbemudia1*, Kaithlyn Rozenberg1, Fungai Dengu1, Gabriella Hakim1, Flavia Neri1, Georg Ebeling1, Letizia Lo Faro1, James Hunter1, Rutger Ploeg1*和Peter Friend1* *“作者对这项工作同样有贡献”1-Nuffield外科科学部门-牛津大学2-南特医院大学-法国介绍静态冷冻保存胰腺(SCS)仍然是目前移植前保存的标准方法。脉冲低温机器灌注(HMP)是一种新兴的方法,可以潜在地改善胰腺保存,增强移植物功能。这是基于个人在人类、猪异体移植和大型非人灵长类动物模型中胰腺HMP的丰富经验。所有模型在组织学评估中一致显示胰腺实质保存长达24小时。为了在移植前保证器官的生存能力,有必要进行进一步的调查。我们建议低温保存后胰腺的常温灌注(NMP)可以进行必要的功能和生理评估。方法取猪热缺血30min后从屠宰场取出胰腺,冲洗。冷缺血3小时后,用HMP (Wave machine)灌注两个胰腺;Waters Medical Systems)注射6小时,然后注射1小时NMP。CIT 3小时后的一个胰腺放置在NMP上2.5小时,这是第一个评估该技术可行性的胰腺NMP。NMP是通过改良肾辅助装置实现的。氧为21%。胰腺经主动脉插管,排出门静脉内的灌注液。所有胰腺的NMP参数为压力40mmHg,温度37C。灌注液由红细胞、血浆组成,提供25%的红细胞压积,并添加共阿莫昔拉夫和25,000IU肝素。在灌注过程中,我们收集了一系列灌注液样品用于血气分析和胰岛素酶联免疫吸附试验(ELISA)。结果NMP末期胰腺及附着物十二指肠的宏观形态无明显变化。NMP期间平均阻力指数为0.62 ru(范围0.30 ~ 0.90 ru)。平均流量为77mls/min(范围为53 ~ 100 mls/min)。在整个过程中,两个胰腺灌注1小时乳酸后的NMP持续时间保持稳定,没有比基线增加。其中一个胰腺灌注2.5小时后,乳酸在第一个小时内保持稳定,在最后1.5小时内增加50%。ELISA证实三次灌注的灌注液中均存在胰岛素。结论常温灌注是评估低温保存后胰腺生理和功能的可行方法,值得进一步发展。
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引用次数: 0
Welcome Letter from the Editor-in-Chief 总编辑的欢迎信
Pub Date : 2020-01-01 DOI: 10.37707/jnds.v1i1.66
A. Handa
Welcome to the Inaugural Issue of Journal of Nuffield Department of Surgical Sciences!
欢迎来到《纳菲尔德外科科学杂志》创刊号!
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引用次数: 0
The Challenges of Monitoring PTLD with focus on Renal Transplantation: A Case Report 以肾移植为重点监测PTLD的挑战:一个病例报告
Pub Date : 1900-01-01 DOI: 10.37707/jnds.v2i3.80
Y. Shammoon, F. Dengu
N/A - Surgical Case Study 
N/A -外科病例研究
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引用次数: 0
An Ominous Sign: Mucinous Ovarian Carcinoma with Sister Mary Joseph Nodule 一个不祥之兆:粘液性卵巢癌与修女玛丽约瑟夫结节
Pub Date : 1900-01-01 DOI: 10.37707/jnds.v2i3.129
A. Hunter, S. Addley
Despite two centuries of progress in its surgical and oncological management, ovarian cancer remains the most lethal of the gynaecological cancers, claiming the lives of nearly 185,000 women globally each year. Historically considered a single disease, there is growing recognition that ovarian cancer is in fact a spectrum of malignancies with distinct cellular origins, molecular driver pathways and clinicopathological features. Mucinous ovarian carcinoma (mOC) is a rare histological subtype that presents a particular challenge in accurate diagnosis and management. Frequently confused with metastatic deposits from extra-ovarian mucinous tumours, the true incidence of primary mOC is estimated to be between 3-5%. Typically affecting younger women, prognosis for late-stage disease is abysmal with a median survival of <15 months. This case report describes a 38-year-old patient who presented with rapidly worsening abdominal distension. Subsequent debulking surgery removed a mass weighing 2.4kg, confirmed by histopathology as a high grade mucinous ovarian carcinoma with a mural nodule of anaplastic carcinoma. Evidence behind the current guidelines for management will be discussed, addressing our recent understanding of mOC as a separate disease from other histotypes and the consequent challenges in interpreting data from large multicentre trials in which patients with mOC are poorly represented. Moreover, using the Sister Mary Joseph nodule (SMJN) as an example, this case also highlights the importance of the physical examination and the value of subtle (and sometimes missed) clinical signs that provide important clues about the extent of a patient’s underlying disease and prognosis.
尽管在手术和肿瘤治疗方面取得了两个世纪的进展,但卵巢癌仍然是最致命的妇科癌症,每年夺去全球近18.5万名妇女的生命。历史上被认为是一种单一疾病,人们越来越认识到卵巢癌实际上是一系列具有不同细胞起源、分子驱动途径和临床病理特征的恶性肿瘤。黏液性卵巢癌(mOC)是一种罕见的组织学亚型,在准确诊断和治疗方面提出了特殊的挑战。常与卵巢外黏液性肿瘤的转移性沉积相混淆,原发mOC的真实发生率估计在3-5%之间。通常影响年轻女性,晚期疾病的预后非常糟糕,中位生存期<15个月。这个病例报告描述了一个38岁的病人谁提出迅速恶化腹胀。随后的减体积手术切除了一个重2.4kg的肿块,组织病理学证实为高级别粘液性卵巢癌伴间变性癌的壁结节。我们将讨论当前管理指南背后的证据,解决我们最近对mOC作为一种独立于其他组织型的疾病的理解,以及在解释mOC患者代表性不足的大型多中心试验数据时随之而来的挑战。此外,以玛丽约瑟夫修女结节(SMJN)为例,本病例还强调了体格检查的重要性和细微(有时被遗漏)临床体征的价值,这些临床体征为患者潜在疾病的程度和预后提供了重要线索。
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引用次数: 0
An Introduction to Surgical Prehabilitation 外科康复导论
Pub Date : 1900-01-01 DOI: 10.37707/jnds.v2i3.168
H. Cui, K. Fairer
None
没有一个
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引用次数: 1
期刊
Journal of the Nuffield Department of Surgical Sciences
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