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Fin clipping does not increase opercular beat rate in tricaine-treated zebrafish. 剪鳍不会增加三卡因处理斑马鱼的厣搏率。
IF 1.3 4区 农林科学 Q2 VETERINARY SCIENCES Pub Date : 2024-08-19 DOI: 10.1177/00236772241252551
Martin D Burkhalter, Melanie Philipp

To carry out research with genetically modified animals, their genotype has to be assessed. A standard protocol to obtain required tissue samples from zebrafish is finclipping. However, some studies reported considerable stress induced by this protocol. We therefore assessed ventilation as a read-out for stress in zebrafish that underwent finclipping during routine genotyping in our fish facility. Our analysis could not confirm a strong increase of ventilation as had been previously reported. Instead, handled zebrafish showed ventilation rates in the range of controls that remained in their holding tanks. Additionally, we detected a slight reduction of ventilation rates up to an hour after anaesthesia in zebrafish treated with tricaine only, suggesting a prolonged protecting effect by this anaesthetic.

要利用转基因动物开展研究,必须对其基因型进行评估。从斑马鱼身上获取所需组织样本的标准方法是鳍条剪切。然而,一些研究报告称这种方法会对斑马鱼造成相当大的压力。因此,我们评估了在我们的鱼类设施中进行常规基因分型时接受鱼鳍剪切的斑马鱼的通气情况,作为压力的读数。我们的分析无法证实之前报道的通气量大幅增加的情况。相反,经过处理的斑马鱼显示的通气率与留在饲养箱中的对照组相同。此外,我们检测到仅使用三卡因麻醉的斑马鱼在麻醉后一小时内通气率略有下降,这表明这种麻醉剂具有长期保护作用。
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引用次数: 0
Comparison of two bedding types on the breeding fecundity of C57BL/6J mice. 两种垫料对 C57BL/6J 小鼠繁殖力的影响比较
IF 1.3 4区 农林科学 Q2 VETERINARY SCIENCES Pub Date : 2024-08-19 DOI: 10.1177/00236772241249783
Jessica L Pinckard, Lauren A Gibson, Wendy R Williams

One of the favored options for generating complex transgenic laboratory mice is through in-house breeding and management strategies. One consideration in the management of these colonies is how the animals' environment may affect reproductive success. Several aspects of the microenvironment can be controlled or manipulated, including cage type, bedding, enrichment, diet, and temperature and humidity. This study sought to evaluate reproductive outcomes for C57BL/6J mice that were randomly assigned to one of two different bedding types: paper based or corncob bedding. Our hypothesis was there would be no significant difference in reproductive outcomes between the two bedding types. A total of 10 males and 10 females were paired at 45 days of age. Animals were allowed to breed for 15 consecutive weeks. Cages were checked daily for the presence of pups and a pup count was performed at 7 days of age. Weaning occurred at 20 or 21 days of age, at which time a final pup count, pup weight, and sex were recorded. All litters born and pups weaned in the 15-week timeframe were used for data analysis. Statistical analysis compared cannibalization between the two groups and the results showed no statistical difference between groups (p > 0.05). Other parameters analyzed included average litter size, average weaning weight, and number of litters per group. All pups counted at Day 7 survived to weaning age in both groups. We concluded that both bedding types produced similar success regarding breeding fecundity in C57BL/6J mice.

通过内部繁殖和管理策略,是产生复杂转基因实验小鼠的首选方案之一。管理这些群体的一个考虑因素是动物的环境可能会如何影响繁殖成功率。微环境的几个方面是可以控制或操纵的,包括笼子类型、垫料、富集、饮食以及温度和湿度。本研究旨在评估 C57BL/6J 小鼠的繁殖结果,这些小鼠被随机分配到两种不同类型的垫料中的一种:纸质垫料或玉米芯垫料。我们的假设是,两种垫料在繁殖结果上没有显著差异。共有 10 只雄性和 10 只雌性小鼠在 45 日龄时配对。让动物连续繁殖 15 周。每天检查笼子中是否有幼崽,并在 7 日龄时对幼崽进行计数。幼崽在 20 或 21 日龄断奶,此时记录幼崽的最终数量、体重和性别。所有在 15 周内出生和断奶的幼崽均用于数据分析。统计分析比较了两组之间的食人情况,结果显示两组之间没有统计学差异(P > 0.05)。其他分析参数包括平均产仔数、平均断奶重量和每组产仔数。在第 7 天统计的所有幼仔中,两组都存活到了断奶年龄。我们得出的结论是,两种垫料类型对 C57BL/6J 小鼠繁殖力的影响相似。
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引用次数: 0
Refining urine collection in mice: Development of an innovative urine collection device. 改进小鼠的尿液收集:开发创新型尿液收集装置
IF 1.3 4区 农林科学 Q2 VETERINARY SCIENCES Pub Date : 2024-08-19 DOI: 10.1177/00236772231219828
Mélodie Douté, Céline Monzali, Antonino Nicoletti, Giuseppina Caligiuri, Marc Clement

Urine collection can be challenging in studies involving small rodents like mice, as the actual methods of collection are anxiogenic and constrain animal welfare while having high variability in the volume of urine collected. To improve the current methods and eventually reduce the impact on the well-being of mice, we developed an innovative 3D-printed urine collection device (UCD). This two-compartment UCD is shaped to fit in classical husbandry cages and allows urine collection by spontaneous urination from two mice housed in their own cage without cross-contamination while enabling potential social interactions. We used our UCD to study the evolution of urinary parameters related to renal functions in a model of antibody-mediated chronic kidney disease. Overall, we report here a time-saving and affordable method for urine collection providing a large amount of uncontaminated urine and which we believe may improve animal welfare in comparison with other methods.

在涉及小鼠等小型啮齿类动物的研究中,尿液收集是一项具有挑战性的工作,因为实际的尿液收集方法会使小鼠产生焦虑情绪,限制动物福利,同时收集的尿液量变化很大。为了改进现有方法并最终减少对小鼠福利的影响,我们开发了一种创新的 3D 打印尿液收集装置(UCD)。这种双室尿液收集装置的形状适合传统的饲养笼,可通过饲养在各自笼子里的两只小鼠的自发排尿收集尿液,不会造成交叉感染,同时还能实现潜在的社交互动。我们利用 UCD 研究了抗体介导的慢性肾病模型中与肾功能相关的尿液参数的演变。总之,我们在此报告了一种既省时、又经济实惠的尿液收集方法,它能提供大量未受污染的尿液,与其他方法相比,我们认为这种方法可以改善动物福利。
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引用次数: 0
Facility design and management. Strategies for high level biocontainment. 设施设计和管理。高水平生物隔离战略。
IF 1.3 4区 农林科学 Q2 VETERINARY SCIENCES Pub Date : 2024-08-09 DOI: 10.1177/00236772241247104
Mike Dennis, Michael Charlton, Samantha Elam, Sarah Wolfensohn

UK Health Security Agency is required to investigate the pathogenesis of emerging or re-emerging infections and to test novel interventions, such as vaccines and therapeutics against these and other diseases, such as tuberculosis and Ebola, that have a significant impact on human health world-wide. Research into the causative agents (mainly BSL 3 and 4) using a wide range of animal species as pre-clinical models brings a number of challenges in terms of effective biocontainment to address human safety whilst optimising delivery of scientific objectives and the welfare of the animals. Here we describe the strategies used for high containment of species that include mice, ferrets, hamsters, rabbits and macaques that have been infected with high consequence pathogens. To ensure relevance of these models we frequently challenge by the aerosol route and monitor the development of disease and protective or therapeutic efficacy by methodologies similar to those used in the clinic. We have devised methods of sampling that can inform on pathogenesis and immune function that include lung lavage and medical imaging such as computed tomography and positron emission tomography-computed tomography. Imaging assists our assessment of progression to disease whilst providing refinement in application of early humane endpoints. We have developed directional flow containment systems that provide quantifiable operator protection whilst allowing group housing and a wide range of enrichment strategies appropriate for each species. Furthermore, we have demonstrated our improvements in animal welfare through use of a software-based Animal Welfare Assessment Grid that was developed with help of NC3Rs funding and enables us to quantify the lifetime experience of animals.

英国卫生安全局需要调查新出现或再次出现的感染的发病机理,并测试新型干预措施,如针对这些疾病和其他疾病(如结核病和埃博拉病毒)的疫苗和疗法,这些疾病对全世界人类健康都有重大影响。使用多种动物物种作为临床前模型对致病因子(主要是 BSL 3 和 4)进行研究,在有效的生物安全防护方面带来了许多挑战,既要解决人类安全问题,又要优化科学目标的实现和动物的福利。在此,我们将介绍用于高度封闭小鼠、雪貂、仓鼠、兔子和猕猴等已感染高致病性病原体的物种的策略。为确保这些模型的相关性,我们经常通过气溶胶途径进行挑战,并通过与临床使用的方法类似的方法监测疾病的发展和保护或治疗效果。我们设计的取样方法可以为发病机制和免疫功能提供信息,包括肺灌洗和医学成像,如计算机断层扫描和正电子发射断层扫描-计算机断层扫描。成像技术有助于我们评估疾病的进展情况,同时完善早期人道终点的应用。我们已开发出定向流动隔离系统,可为操作人员提供可量化的保护,同时允许分组饲养,并可根据每个物种的不同情况采取多种强化策略。此外,我们还通过使用基于软件的动物福利评估网格(Animal Welfare Assessment Grid)展示了我们在动物福利方面的改进,该网格是在 NC3Rs 的资助下开发的,使我们能够量化动物的终生经历。
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引用次数: 0
LAS Around the Globe - United States of America. 全球各地的 LAS - 美国。
IF 1.3 4区 农林科学 Q2 VETERINARY SCIENCES Pub Date : 2024-08-01 Epub Date: 2024-06-11 DOI: 10.1177/00236772231225896
Jennie Lofgren, Kelly Metcalf-Pate
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引用次数: 0
Lethal Gram-negative sepsis in healthy pigs during anaesthesia with contaminated propofol. 健康猪在使用受污染的异丙酚进行麻醉期间发生致命的革兰氏阴性败血症。
IF 1.3 4区 农林科学 Q2 VETERINARY SCIENCES Pub Date : 2024-08-01 Epub Date: 2024-06-11 DOI: 10.1177/00236772231200524
Marit G Maaland, Marianne Oropeza-Moe, Silje K Nes, Frode Myrland, Cecilie Ersdal, Nils P Oveland

Two healthy Landrace pigs anaesthetized with propofol suffered rapid onset of fatal sepsis. Clinical signs included severe arterial hypotension, loss of peripheral oxygenation, low end-tidal CO2, clinical onset of pulmonary oedema and cardiac dysfunction. Gross and histopathological examination revealed loss of vascular integrity with severe lung oedema and congestion, haemorrhages in several organs and fluid leakage into body cavities. Large numbers of Gram-negative bacteria, primarily Klebsiella sp., were present in the anaesthetic infusion containing propofol and were also cultured from internal organs of both pigs. The propofol was likely contaminated by bacteria after inappropriate handling and storage in the operating room. This report illustrates the potential for severe nosocomial infection when applying propofol in animals and humans and may serve as a reminder of the importance of strict aseptic practice in general, and specifically in the handling of this anaesthetic agent.

两头使用异丙酚麻醉的健康兰德瑞斯猪迅速出现致命的败血症。临床症状包括严重的动脉低血压、外周血氧饱和度下降、潮气末二氧化碳浓度低、临床上出现肺水肿和心功能不全。大体和组织病理学检查显示,血管完整性丧失,肺部严重水肿和充血,多个器官出血,液体渗入体腔。在含有异丙酚的麻醉输液中发现了大量革兰氏阴性菌,主要是克雷伯氏菌,在两头猪的内脏中也培养出了这种细菌。异丙酚很可能是在手术室处理和储存不当后被细菌污染的。本报告说明了在动物和人体内使用异丙酚时可能会造成严重的院内感染,并提醒人们在一般情况下,特别是在处理这种麻醉剂时,严格无菌操作的重要性。
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引用次数: 0
Evaluation of a gel-based versus micro-pellet diet for adult zebrafish (Danio rerio). 评估成年斑马鱼(Danio rerio)的凝胶型和微颗粒型食物。
IF 1.3 4区 农林科学 Q2 VETERINARY SCIENCES Pub Date : 2024-08-01 Epub Date: 2024-08-05 DOI: 10.1177/00236772241244834
Christine L Archer, Nikki K Tsuji, Molly H Waters, Jennifer L Brazzell, Derek L Fong, Jori K Leszczynski, Christopher A Manuel, Lauren M Habenicht
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引用次数: 0
Retrospective analysis on the occurrence of kidney cysts in mice in a central animal facility in the years 2009-2019. 2009-2019 年中央动物设施小鼠肾囊肿发生率的回顾性分析。
IF 1.3 4区 农林科学 Q2 VETERINARY SCIENCES Pub Date : 2024-08-01 Epub Date: 2024-08-05 DOI: 10.1177/00236772241242538
Katrin Becker

Kidney cysts in humans are mainly caused by inheritable polycystic kidney disease. Although they are a regular finding in laboratory mice, their occurrence upon dissection has not been systematically investigated, yet. Therefore, the aim of this report was to investigate on prevalence, phenotype and aetiology of spontaneously occurring kidney cysts in mice by retrospectively analysing the laboratory-receipt tables of the in-house laboratory of a central animal facility in North Rhine-Westphalia, Germany, years 2009-2019. A percentage of 0.4% of dissected mice displayed kidney cysts, with more male than female animals affected and average age equal to that of all dissected animals. Preliminary report in half of the cases was distended abdomen, and a few individuals displayed additional pathologic alterations of kidneys, most commonly dilated renal pelvis, or extrarenal comorbidities. Kidney cysts occurred independently of a renal phenotype of the transgenic strain or presence of infectious agents in health monitoring. To conclude, kidney cysts were characterized as harmless for affected mice but, as inheritability is suggested according with the literature, affected animals should be excluded from breeding.

人类肾囊肿主要由遗传性多囊肾引起。虽然肾囊肿是实验室小鼠的常见病,但尚未对其解剖后的发生情况进行系统研究。因此,本报告旨在通过回顾性分析德国北莱茵-威斯特法伦州一家中央动物设施内部实验室 2009-2019 年的实验室收据表,研究小鼠自发肾囊肿的发病率、表型和病因。0.4%的解剖小鼠显示出肾囊肿,受影响的雄性动物多于雌性动物,平均年龄与所有解剖动物相同。半数病例的初步报告为腹胀,少数病例的肾脏出现其他病理改变,最常见的是肾盂扩张或肾外合并症。肾囊肿的发生与转基因菌株的肾脏表型或健康监测中是否存在感染性病原体无关。总之,肾囊肿对受影响的小鼠无害,但根据文献,肾囊肿具有遗传性,因此受影响的动物应排除在育种之外。
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引用次数: 0
SMAFIRA: a literature-based web tool to assist researchers with retrieval of 3R-relevant information. SMAFIRA:协助研究人员检索 3R 相关信息的基于文献的网络工具。
IF 1.3 4区 农林科学 Q2 VETERINARY SCIENCES Pub Date : 2024-08-01 Epub Date: 2024-06-13 DOI: 10.1177/00236772241237608
Daniel Butzke, Bettina Bert, Konrad Gulich, Gilbert Schönfelder, Mariana Neves

The search for 3R-relevant information is a prerequisite for any planned experimental approach considering animal use. Such a literature search includes all methods to replace, reduce and refine (3Rs) animal testing with the aim of improving animal welfare, and requires an intensive screening of literature databases reflecting the current state of knowledge in experimental biomedicine. We developed SMAFIRA, a freely available online tool to facilitate the screening of PubMed/MEDLINE for possible alternatives to animal testing. SMAFIRA employs state-of-the-art language models from the field of deep learning, and provides relevant literature citations in a ranked order, classified according to the experimental model used. By using this classification, the search for alternative methods in the biomedical literature will become much more efficient. The tool is available at https://smafira.bf3r.de.

搜索 3R 相关信息是任何考虑使用动物的计划实验方法的先决条件。这种文献搜索包括所有替代、减少和完善(3Rs)动物实验的方法,目的是改善动物福利,并需要对反映实验生物医学知识现状的文献数据库进行深入筛选。我们开发了 SMAFIRA,这是一种可免费使用的在线工具,可帮助筛选 PubMed/MEDLINE,寻找动物实验的可能替代品。SMAFIRA 采用了深度学习领域最先进的语言模型,并根据所使用的实验模型分类,以排序的方式提供相关的文献引用。通过使用这种分类方法,在生物医学文献中搜索替代方法的效率将大大提高。该工具可在 https://smafira.bf3r.de 上获取。
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引用次数: 0
Auditory enrichment with different genres of music for colony queens. 用不同类型的音乐丰富殖民地皇后的听觉。
IF 1.3 4区 农林科学 Q2 VETERINARY SCIENCES Pub Date : 2024-08-01 Epub Date: 2024-07-29 DOI: 10.1177/00236772241238264
María C García Mitacek, Romina G Praderio, Micaela Tebes, Florencia García, María C Stornelli, Rodolfo Luzbel de la Sota, María A Stornelli

The aim was to determine changes in clinical parameters, glucose concentration, cortisol and behavior in colony queens in no music conditions compared with exposing to different genres of music. Mixed breed clinically healthy queens (N = 9) were used. Queens were studied under no music conditions (control=CON) and auditory enrichment: Soft Rock (M1), Motown (M2), Pop (M3), Frenchcore (M4) and music that was composed to be species-appropriate for cats (M5). The queens underwent auditory enrichment, including three days of silence (D1-3), five consecutive days of auditory enrichment (D4-8) and three days of silence (D9-11). We recorded clinical parameters, glucose, cortisol and behavior. Data were analyzed with GLIMMIX. Queens showed a significant increase of femoral pulse during exposure to M1, M2 and M4; and respiratory rate during exposure to M1, M2, M3 and M4 compared with CON. There was a significant increase in glucose during exposure to M2 and M5 compared with CON. However, there was a significant decrease in glucose during exposure to M4 compared with CON. There was a significant decrease in cortisol during exposure to M2 and M5 compared with CON. When we evaluated the ethogram, we observed a significant decrease in the percentage of interaction with other cats in M1 and M2 compared with CON. In addition, we found a significant decrease in the purring in M1 and M3 compared with CON. Auditory enrichment can be beneficial in situations that cause discomfort and distress in colony cats, such as in feline hospitalization; however, it should be acknowledged that there are limits to direct extrapolation.

目的是确定在无音乐条件下与听不同类型音乐相比,群体皇后的临床参数、葡萄糖浓度、皮质醇和行为的变化。研究使用了临床健康的混种皇后(N = 9)。在无音乐条件(对照组=CON)和听觉强化条件下对蜂后进行了研究:这些音乐包括:软摇滚乐(M1)、摩城音乐(M2)、流行音乐(M3)、法式摇滚乐(M4)和适合猫科动物的音乐(M5)。雌猫接受了听觉强化训练,包括三天静音(D1-3)、连续五天听觉强化训练(D4-8)和三天静音(D9-11)。我们记录了临床参数、血糖、皮质醇和行为。我们使用 GLIMMIX 对数据进行了分析。结果表明,与对照组相比,昆虫在接触 M1、M2 和 M4 时股脉搏明显增加;在接触 M1、M2、M3 和 M4 时呼吸频率明显增加。与对照组相比,接触 M2 和 M5 时葡萄糖含量明显增加。然而,与对照组相比,暴露于 M4 时葡萄糖明显下降。与对照组相比,暴露于 M2 和 M5 时皮质醇明显下降。当我们评估ethogram时,我们观察到与CON相比,M1和M2中与其他猫互动的比例明显下降。此外,我们还发现 M1 和 M3 的咕噜声也比 CON 时明显减少。听觉强化在导致群居猫不适和痛苦的情况下可能是有益的,例如在猫科动物住院期间;但是,应该承认,直接推断是有局限性的。
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引用次数: 0
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Laboratory Animals
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