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Influence of delayed milk ejection on mammary gland health and milking performance in dairy cows: A systematic review and meta-analysis 延迟泌乳对奶牛乳腺健康和挤奶性能的影响:一项系统综述和荟萃分析
IF 2.2 3区 农林科学 Q1 VETERINARY SCIENCES Pub Date : 2025-02-01 DOI: 10.1016/j.rvsc.2024.105510
Mohammad Dahl , Matthias Wieland
Delayed milk ejection (DME) could compromise udder health and milking performance. The objectives of this systematic review and meta-analysis were to (i) explore the current evidence, assess the risk of bias, and identify the knowledge gaps in published studies that investigated the effect of DME on udder health and milking performance in dairy cows, and (ii) quantify the magnitude of the difference in milk yield per milking session (MY), milking duration (MD), and peak milk flow rate (PFR) between cows with and without DME. We performed the current systematic review and meta-analysis according to PRISMA 2020 statement. We tracked the pertinent peer-reviewed publications from PubMed using the following syntax (delayed milk ejection OR disturbed milk ejection OR bimodal milk flow OR bimodality) AND (bovine OR cattle OR cows), and additional relevant studies from the identified articles' reference lists. We calculated the pooled-mean difference in MY (kg), MD (seconds), and PFR (kg/min) between cows with and without DME using the random-effects models. The selection process identified 15 studies as the final number of studies qualified for review, including six interventional and nine observational studies published between 1980 and 2023 conducted in seven countries, including the USA, Germany, Italy, Switzerland, Netherlands, New Zealand, and Portugal. The results indicated that while the DME had a minimal influence on the udder health, it can reduce MY by 1.55 kg per milking session (95 % CI = −2.10, −1.00). The observed evidence here suggests that DME can negatively influence the milking profitability.
延迟泌乳(DME)可能损害乳房健康和挤奶性能。本系统综述和荟萃分析的目的是:(i)探索现有证据,评估偏倚风险,并确定已发表的研究中二甲醚对奶牛乳房健康和挤奶性能的影响的知识差距,以及(ii)量化使用和不使用二甲醚的奶牛在每次挤奶产奶量(MY)、挤奶时间(MD)和峰值奶流量(PFR)方面的差异程度。我们根据PRISMA 2020声明进行了当前的系统评价和荟萃分析。我们使用以下语法(延迟泌乳或干扰泌乳或双峰奶流或双峰)和(牛或牛或奶牛)跟踪PubMed上相关的同行评审出版物,以及来自已识别文章参考列表的其他相关研究。我们利用随机效应模型计算了添加和未添加二甲醚的奶牛在MY (kg)、MD(秒)和PFR (kg/min)方面的池平均差异。选择过程确定了15项研究作为最终合格的研究数量,包括1980年至2023年间发表的6项干预性研究和9项观察性研究,这些研究在7个国家进行,包括美国、德国、意大利、瑞士、荷兰、新西兰和葡萄牙。结果表明,虽然二甲醚对乳房健康的影响很小,但它可以使每次挤奶的MY减少1.55 kg (95% CI = -2.10, -1.00)。观察到的证据表明,二甲醚会对挤奶盈利能力产生负面影响。
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引用次数: 0
Evaluation of prevalence, risk factors, and therapeutic approach for subclinical endometritis and oviductal occlusion in repeat breeder Holstein cattle 重复繁殖荷斯坦牛亚临床子宫内膜炎和输卵管闭塞的患病率、危险因素和治疗方法的评估。
IF 2.2 3区 农林科学 Q1 VETERINARY SCIENCES Pub Date : 2025-02-01 DOI: 10.1016/j.rvsc.2024.105511
Sofía L. Villar , Carlos C. Pérez-Marín , Jacobo Álvarez , Uxía Yáñez , Juan J. Becerra , Ana I. Peña , Pedro G. Herradón , Luis A. Quintela
Due to the productive and economic consequences of Repeat Breeder (RB) syndrome, the objectives of this study were to determine the prevalence and risk factors for subclinical endometritis (SE) and oviductal occlusion (OO) in RB cows, and to make a therapeutic approach for these pathologies. In 99 RB cows, endometrial cytologies were performed to assess the presence of SE (>5 % polymorphonuclear neutrophils), and the oviductal patency was checked using the phenolsulfonphthalein test. Body condition score was evaluated, and data from each animal were obtained from on-farm software (parity, calving date, artificial insemination (AI) date, number of AI, and occurrence of postpartum diseases). Cows positive to SE were assigned to one treatment protocol: a) Non-steroidal anti-inflammatory drug (NSAID), b) Prostaglandin F (PGF), c) NSAID+ PGF. Similarly, cows with OO were assigned to one treatment: a) Therapeutic embryo, b) Artificial insemination. The prevalence for SE and OO was 22 % and 3 %, respectively. Regarding SE, the logistic regression did not show any significant difference for the risk factors evaluated. Moreover, cows that were administered the NSAID, either alone or in combination with PGF, showed higher conception rates in the following AI (p < 0.05). Due to the low prevalence of OO, it was not possible to perform the logistic regression analysis. In conclusion, neither SE nor OO seem to be the main cause of RB syndrome in the cows under study. Additionally, when SE is diagnosed as the main cause of RB syndrome, treatment with NAISDs seems to increase conception rates.
由于重复繁殖者(RB)综合征的生产和经济后果,本研究的目的是确定RB奶牛亚临床子宫内膜炎(SE)和输卵管闭塞(OO)的患病率和危险因素,并制定这些病理的治疗方法。对99头RB奶牛进行子宫内膜细胞学检查以评估SE (bbb50 %多形核中性粒细胞)的存在,并使用酚磺酞试验检查输卵管通畅程度。评估体况评分,并从农场软件获取每只动物的数据(胎次、产犊日期、人工授精日期、人工授精次数和产后疾病发生情况)。将SE阳性奶牛分为a)非甾体抗炎药(NSAID)、b)前列腺素F2α (PGF2α)、c) NSAID+ PGF2α治疗方案。同样地,有OO的奶牛被分配到一个处理:a)治疗胚胎,b)人工授精。SE和OO的患病率分别为22%和3%。在SE方面,logistic回归分析显示各危险因素间无显著差异。此外,在随后的人工授精中,奶牛单独或联合使用非甾体抗炎药(PGF2α)显示出更高的受孕率
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引用次数: 0
Preliminary steps for fabrication of microfluidic systems for swine sperm sorting: Materials, perfusing systems and flow 制备猪精子分选微流体系统的初步步骤:材料、灌注系统和流动。
IF 2.2 3区 农林科学 Q1 VETERINARY SCIENCES Pub Date : 2025-02-01 DOI: 10.1016/j.rvsc.2024.105488
A. Lacueva-Aparicio , R. Monge , L. Serrano , C. Malo
The success rate of assisted reproductive techniques in the livestock production can be optimized by improving the quality of the semen sample by selecting only the good quality sperm from the ejaculate. Microfluidic technology has been studied for sperm sorting mainly in human ejaculates but has not been studied for boar sperm. Spermatozoa have been proven to be highly sensitive to different microplastics, but the potential toxic effects of the materials used to set up microfluidic systems have not been studied. The main goal of this study was to assess the possible toxic effect on boar sperm of materials commonly used for a microfluidic system and to evaluate the effect of different flow control systems (peristaltic pump, syringe pump and a microfluidic flow controller) at different flow rates (10 μl*min-1, 100 μl*min-1 and 1 ml*min-1) on sperm quality, as preliminary information for the development of a swine sperm sorting microfluidic system. Results showed no negative effect of the different materials at different concentrations. The control reached the highest curvilinear velocity compared to the peristaltic pump and the pressure-based flow control system. In the flow rates, 10 μm*min-1 showed the poorest results and no significant differences were observed between control and 1 mlmin-1 flow in any of the parameters. In conclusion, all materials that were studied for microfluidic fabrications were suitable for sperm sorting, any of the pumps would be suitable for sperm selection and 1 ml*min-1 flow rate would be the flow rate of choice for sperm pumping.
畜禽辅助生殖技术在畜禽生产中的成功率可以通过只从射精中选择优质精子来提高精液质量来实现。微流控技术主要用于人类精液的精子分选,但尚未用于猪精子的分选。精子已被证明对不同的微塑料高度敏感,但用于建立微流体系统的材料的潜在毒性效应尚未研究。本研究的主要目的是评估微流控系统常用材料对猪精子可能产生的毒性作用,并评估不同流量控制系统(蠕动泵、注射泵和微流控器)在不同流量(10 μl*min-1、100 μl*min-1和1 ml*min-1)下对精子质量的影响,为猪精子分选微流控系统的开发提供初步信息。结果表明,不同浓度的不同材料对其无负面影响。与蠕动泵和基于压力的流量控制系统相比,该控制系统达到了最高的曲线速度。在流量方面,10 μm*min-1的效果最差,与1 mlmin-1的流量相比,各参数均无显著差异。综上所述,所研究的微流控材料均适用于精子分选,任一泵均适用于精子选择,抽送精子的流量选择为1 ml*min-1。
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引用次数: 0
Distinct amino acid substitutions in the EEV glycoprotein and DNA-dependent RNA polymerase of lumpy skin disease virus identified in wetland areas of Bangladesh 在孟加拉国湿地地区发现的肿块性皮肤病病毒EEV糖蛋白和dna依赖性RNA聚合酶的不同氨基酸取代
IF 2.2 3区 农林科学 Q1 VETERINARY SCIENCES Pub Date : 2025-02-01 DOI: 10.1016/j.rvsc.2024.105508
Moslema Jahan Mou , S.M. Nazmul Hasan , Anandha Mozumder , Marjana Akter , Riyan Al Islam Reshad , Roni Mia , Md. Salauddin , M. Shaminur Rahman , Md. Mahmudul Alam , Sharmin Akter , Sukumar Saha , Tofazzal Islam , Md. Golzar Hossain
The recent outbreak of lumpy skin disease virus (LSDV) in the wetland areas of Bangladesh presents a significant concern for both animal health and regional biosecurity. Epidemiological investigations into nine major outbreaks in the wetland areas revealed distinctive clinical symptoms in affected cattle, including elevated body temperature, excessive salivation, and the presence of skin nodules. Histopathological examination unveiled larger nodules compared to previous outbreaks, along with signs of secondary infection. Molecular analysis confirmed the presence of LSDV in all samples, with subsequent sequencing revealing genetic similarities with virus isolates of Bangladesh, India, China, Russia, Serbia and Greece. Most importantly amino acid variations in the viral EEV glycoprotein and DNA-dependent RNA polymerase were revealed that also altered the structures of the respective proteins significantly suggesting potential implications for viral pathogenesis. Additionally, successful isolation of LSDV in Vero cells demonstrated cytopathic effects, supporting the potential for vaccine development. In conclusion, this study provides comprehensive insights into the epidemiology, genomic characters with altered predicted structures of two major viral proteins and pathogenesis of LSDV outbreaks in Bangladesh. These findings emphasize the critical need for ongoing monitoring and adaptive control strategies, including the development of effective vaccines, to mitigate the impact of LSDV in affected regions and safeguard regional livestock health.
最近在孟加拉国湿地地区爆发的肿块性皮肤病病毒(LSDV)对动物健康和区域生物安全都提出了重大关切。对湿地地区9起重大疫情的流行病学调查显示,受影响的牛出现了独特的临床症状,包括体温升高、流涎过多和皮肤结节的存在。组织病理学检查显示,与以前的疫情相比,结节更大,并有继发感染的迹象。分子分析证实所有样本中都存在LSDV,随后的测序显示与孟加拉国、印度、中国、俄罗斯、塞尔维亚和希腊的病毒分离株具有遗传相似性。最重要的是,病毒EEV糖蛋白和dna依赖性RNA聚合酶的氨基酸变异也显著改变了各自蛋白的结构,这表明病毒的发病机制可能具有潜在的影响。此外,在Vero细胞中成功分离LSDV显示出细胞病变效应,支持疫苗开发的潜力。总之,这项研究为孟加拉国LSDV暴发的流行病学、两种主要病毒蛋白预测结构改变的基因组特征和发病机制提供了全面的见解。这些发现强调,迫切需要持续监测和适应性控制战略,包括开发有效的疫苗,以减轻LSDV在受影响地区的影响,并保障区域牲畜健康。
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引用次数: 0
Novel hydroxy naphthol blue-based recombinase polymerase amplification for the rapid detection of Staphylococcus pseudintermedius 新型羟基萘酚蓝重组酶扩增快速检测假中间葡萄球菌。
IF 2.2 3区 农林科学 Q1 VETERINARY SCIENCES Pub Date : 2025-02-01 DOI: 10.1016/j.rvsc.2024.105520
Pavarish Jantorn , Aekkaraj Nualla-ong , Dennapa Saeloh Sotthibandhu
Staphylococcus pseudintermedius (S. pseudintermedius) is a significant cause of pyoderma, soft tissue, urinary tract, and ear infections in cats and dogs. Bacterial culture and biochemical phenotypic assays are the gold standards for clinical diagnosis of bacteria but molecular methods have now been developed to identify and differentiate S. pseudintermedius. However, these methods require complex and expensive equipment, restricting usage in many laboratories. This study developed a rapid, specific, and sensitive detection method for S. pseudintermedius based on recombinase polymerase amplification (RPA) combined with hydroxy naphthol blue (HNB) dye. The RPA primer was designed, optimized, and subjected to amplify the spsL gene as the molecular diagnostic target. HNB dye was added to the reaction, successfully enabling the development of a colorimetric detection method for S. pseudintermedius. This RPA-HNB assay completed amplification at 37 °C within 20 min, with results visualized by the naked eye as a color change. All processes were completed within an hour. The assay showed the limit of detection at 1 copy per reaction, with sensitivity and specificity against S. pseudintermedius 0.98 and 1.00, respectively. Results indicated that our assay provided high sensitivity and specificity for detecting S. pseudintermedius with reduced detection time.
假中间葡萄球菌(S. pseudintermedius)是猫和狗的脓皮病、软组织、尿路和耳部感染的重要原因。细菌培养和生化表型分析是临床诊断细菌的金标准,但现在已经开发出分子方法来鉴定和区分假中间芽胞杆菌。然而,这些方法需要复杂和昂贵的设备,限制了许多实验室的使用。本研究建立了一种基于重组酶聚合酶扩增(RPA)结合羟基萘酚蓝(HNB)染料的假中间假葡萄球菌快速、特异、灵敏的检测方法。设计、优化RPA引物,扩增spsL基因作为分子诊断靶点。将HNB染料加入到该反应中,成功地建立了假中间芽孢杆菌的比色检测方法。RPA-HNB实验在37°C下20分钟内完成扩增,结果肉眼可见为颜色变化。所有程序都在一小时内完成。结果表明,每个反应的检出限为1个拷贝,对假中间葡萄球菌的敏感性和特异性分别为0.98和1.00。结果表明,该方法具有较高的检测灵敏度和特异性,且检测时间短。
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引用次数: 0
Investigating compliance with cow comfort and mastitis control recommendations on mastitis outcomes in smallholder dairy farms in Central Kenya 调查肯尼亚中部小农奶牛场遵守奶牛舒适度和乳腺炎控制建议对乳腺炎结果的影响。
IF 2.2 3区 农林科学 Q1 VETERINARY SCIENCES Pub Date : 2025-02-01 DOI: 10.1016/j.rvsc.2024.105469
E.K. Ng'ang'a , J. VanLeeuwen , G.K. Gitau , S.L. McKenna , L.C. Heider , G.K. Keefe
A randomized controlled trial was conducted in Kenya in 2020 with the objectives being to assess compliance of smallholder dairy farmers (SDF) with farm-specific mastitis and cow comfort recommendations, to determine factors associated with compliance, and to determine the impact of these recommendations in reducing cases of subclinical mastitis.
A total of 114 SDFs (124 cows) were recruited into the study and randomly allocated into intervention (74 farms) and control (40 farms) groups during the first farm visit. Existing farm-level mastitis control and cow comfort strategies were assessed in both intervention and control farms. Cow parameters (e.g. udder hygiene) were observed or measured from individual cows. A California Mastitis Test (CMT) was done on all quarters and scored from 0 (negative) to 3 (strong positive). All quarters with a CMT score of 2 and 3 were treated with intramammary antibacterial cefapirin preparation according to the label (Cefalak®). Intervention farms received farm-specific mastitis and cow comfort recommendations at the end of the first visit. On the second farm visit, cow parameters were measured again, CMT was repeated on all quarters on all cows, and compliance with recommendations was assessed and given a percentage score. Control farms were then given their farm-specific recommendations. Regression models were utilized to assess associations with compliance and improvement in CMT scores between visits.
Intervention farms received an average of 3.3 and 3.9 recommendations pertaining to mastitis control and cow comfort, respectively. Farms complied with an average of 2.8 and 2.1 mastitis and cow comfort recommendations, respectively, leading to an overall average compliance score of 63.2 % for all recommendations. On the first visit, CMT scores 1 and 2 were significantly higher in quarters among cows on the intervention than control farms. There was a significantly lower proportion of quarters with CMT scores 1 and 2 in the intervention group on the second visit than the first visit and no quarters with CMT score of 3. The principal farmer, type of recommendation and number of recommendations given were significantly associated with compliance to the recommendations. The principal farmer and their age group were significantly associated with quarter CMT scores improving between the first and second visits.
Farm-specific mastitis and cow comfort recommendations can significantly reduce the number of cases of subclinical mastitis in SDFs and should thus be included in farmers' training. Farmers should be given a small number of recommendations at a time to enhance compliance.
2020年在肯尼亚进行了一项随机对照试验,目的是评估小农奶农(SDF)遵守农场特异性乳腺炎和奶牛舒适度建议的情况,确定与依从性相关的因素,并确定这些建议对减少亚临床乳腺炎病例的影响。研究共招募114头sdf(124头奶牛),在第一次农场访问时随机分为干预组(74个农场)和对照组(40个农场)。对干预和对照农场现有的乳腺炎控制和奶牛舒适策略进行了评估。观察或测量奶牛个体参数(如乳房卫生)。加州乳腺炎测试(CMT)在所有方面都进行了测试,得分从0(阴性)到3(强阳性)。CMT评分为2分和3分的四分之一均按照标签(Cefalak®)使用乳内抗菌头孢匹林制剂治疗。在第一次访问结束时,干预农场收到了农场特有的乳腺炎和奶牛舒适度建议。在第二次农场访问中,再次测量奶牛参数,在所有奶牛的所有部位重复CMT,并评估对建议的依从性并给出百分比分数。然后向对照农场提供具体的农场建议。使用回归模型来评估依从性与就诊间CMT评分改善的关系。干预农场在乳腺炎控制和奶牛舒适方面分别获得了平均3.3和3.9的建议。农场分别遵守了平均2.8和2.1的乳腺炎和奶牛舒适度建议,导致所有建议的总体平均遵守得分为63.2%。在第一次访问时,干预农场的奶牛的CMT得分1和2显着高于对照农场。干预组第二次就诊时CMT得分为1分和2分的院区比例明显低于第一次就诊时,没有CMT得分为3分的院区。主要的农民、建议的类型和建议的次数与建议的遵守程度显著相关。在第一次和第二次访问期间,主要农民及其年龄组与季度CMT评分的提高显著相关。农场特有的乳腺炎和奶牛舒适度建议可以显著减少sdf中亚临床乳腺炎的病例数,因此应纳入农民培训。应每次向农民提供少量建议,以提高依从性。
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引用次数: 0
Prevalence and herd-level risk factors associated with Brucella infection in smallholders keeping large ruminants 在饲养大型反刍动物的小农中与布鲁氏菌感染相关的流行率和群体水平风险因素。
IF 2.2 3区 农林科学 Q1 VETERINARY SCIENCES Pub Date : 2025-02-01 DOI: 10.1016/j.rvsc.2024.105506
Abrar Hussain , Sabir Hussain , Mamoona Chaudhry , Muhammad Asif Ali , Ibrahim Elsohaby , Ubaid-ur-Rehman Zia , Olivier Sparagano
Brucellosis is a disease that poses a higher risk of transmission to animals and people who have close interactions with them, such as farmers. Therefore, the present study was designed to determine the seroprevalence of bovine brucellosis and associated risk factors in Kasur, Punjab, Pakistan. One hundred pooled milk samples from 100 smallholder mixed herds of cows and buffaloes with a total study population of 425 animals (277 cattle and 148 buffalos) with a range of up to seven animals in each herd were collected and tested through a milk ring test (MRT). Blood samples were collected from the animals of MRT-positive herds and then subjected to an indirect enzyme-linked immunosorbent assay (i-ELISA) for the presence of antibodies against Brucella abortus. Of the 100 herds, 16 % (n = 16) were MRT-positive. In MRT-positive herds, 77 animals (43 female cattle, three male cattle, 21 female buffaloes, and ten male buffaloes) were present; 32 (41.6 %) were i-ELISA seropositive, with the highest seropositivity (54.8 %) observed in buffaloes as compared to cows (32.6 %). Almost 38 % of the farmers were unaware of brucellosis. Herd-level risk factors indicated Brucella seropositivity increased in herds with recent abortion history and bull exchange during breeding. Conversely, herds with veterinary assistance exhibited a decreased Brucella seropositivity. The findings highlight the need for a government-led awareness campaign emphasizing routine screenings, especially for breeding bulls, to stop further disease spread. Early detection and management can enhance animal health, milk production, and livestock holders' economic well-being.
布鲁氏菌病是一种向动物和与其密切接触的人(如农民)传播风险较高的疾病。因此,本研究旨在确定巴基斯坦旁遮普省卡苏尔牛布鲁氏菌病的血清患病率和相关危险因素。通过乳环试验(MRT)收集了100个汇集的牛奶样本,这些样本来自100个小农奶牛和水牛混合畜群,研究种群总数为425头动物(277头牛和148头水牛),每个畜群最多有7头动物。从mrt阳性畜群的动物身上采集血液样本,然后进行间接酶联免疫吸附试验(i-ELISA),以检测是否存在抗流产布鲁氏菌的抗体。在100头牛中,16% (n = 16)为mrt阳性。在mrt阳性的牛群中,共有77头动物(43头母牛、3头公牛、21头母水牛和10头公水牛)存在;32只(41.6%)血清呈i-ELISA阳性,其中水牛血清阳性率最高(54.8%),高于奶牛(32.6%)。近38%的农民不知道布鲁氏菌病。畜群水平的危险因素表明,近期流产史和繁殖期间换牛的畜群布鲁氏菌血清阳性升高。相反,有兽医帮助的畜群表现出下降的布鲁氏菌血清阳性。这一发现强调了政府主导的提高认识运动的必要性,强调常规筛查,特别是对繁殖公牛进行筛查,以阻止疾病进一步传播。早期发现和管理可以改善动物健康、牛奶生产和牲畜养殖户的经济福祉。
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引用次数: 0
Effect of the sarcoptic mange upon metabolome profiling in wild boars 肉疥癣对野猪代谢组图谱的影响
IF 2.2 3区 农林科学 Q1 VETERINARY SCIENCES Pub Date : 2025-02-01 DOI: 10.1016/j.rvsc.2024.105505
Nadia Piscopo , Michele Costanzo , Monica Gelzo , Luigi Sacchettino , Chiara Vitiello , Anna Balestrieri , Francesco Napolitano , Luigi Esposito
Sarcoptic mange is a highly contagious disease and represents one of the main health concerns for humans and non-human mammals worldwide. It is caused by the mite Sarcoptes scabiei and can course with different morphological and physiological presentations. Accordingly, aside from skin inflammation, hosts may experience changes in body condition, immune system, biochemistry, reproduction, and thermoregulation, although the understanding of the downstream metabolic burden is still missing. In this context, mange-derived fat store depletion and following imbalance of fatty acid composition might contribute to the severity of the illness. The lack of a tool for early detection of this etiological agent often results in significant financial losses for farmers and harm to animal welfare. Therefore, using targeted LC-MS/MS-based metabolomics approach, we sought to investigate the impact of sarcoptic mange upon metabolome profiling in the blood serum of mangy wild boars. Thirteen wild boars were analyzed in three different clinical conditions, namely when they were sick, during the therapeutic treatment with ivermectin, and when they were deemed recovered from the disease. We identified specific long-chain acylcarnitines highly abundant in the blood serum of the subjects within the infection phase, when compared to the ivermectin-treated and healthy conditions. Overall, data from our preliminary study highlighted the need for more accurate and broad-based studies, about the potential role of the long chain acylcarnitines in the metabolic homeostasis, to help early diagnose of the sarcoptic mange.
疥癣是一种高度传染性疾病,是全球人类和非人类哺乳动物的主要健康问题之一。该病由疥螨引起,可有不同的形态和生理表现。因此,除了皮肤炎症外,宿主的身体状况、免疫系统、生物化学、生殖和体温调节都可能发生变化,但人们对其下游代谢负担的了解仍然不足。在这种情况下,疥癣导致的脂肪储存耗竭和随之而来的脂肪酸组成失衡可能会加重疾病的严重程度。由于缺乏早期检测这种病原体的工具,养殖户往往会遭受重大经济损失,动物福利也会受到损害。因此,我们采用基于 LC-MS/MS 的代谢组学方法,试图研究肉牛疥癣对癞皮野猪血清代谢组谱的影响。我们对 13 头野猪在三种不同临床情况下的血清进行了分析,即患病时、伊维菌素治疗期间和痊愈后。与伊维菌素治疗期和健康期相比,我们在感染期受试者的血清中发现了大量特定的长链酰基肉碱。总之,我们的初步研究数据强调了对长链酰基肉碱在新陈代谢平衡中的潜在作用进行更准确、更广泛研究的必要性,以帮助早期诊断肉皮癞病。
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引用次数: 0
ERα, HER-2, pan-RAS, p53, and aromatase expression in spontaneous malignant canine mammary tumors: Prognostic relevance and association with clinicohistological parameters ERα、HER-2、pan-RAS、p53和芳香化酶在犬自发性恶性乳腺肿瘤中的表达:与预后的相关性和与临床组织学参数的相关性
IF 2.2 3区 农林科学 Q1 VETERINARY SCIENCES Pub Date : 2025-02-01 DOI: 10.1016/j.rvsc.2024.105515
Siddharth Gautam , Kuldip Gupta , Vinodhkumar Obli Rajendran , Karam Chand , Chitra Joshi , Naresh Kumar Sood

Aim

The interlacing interaction between proto-oncoproteins and tumor-suppressing proteins in malignant canine mammary tumors (mCMT) microenvironment remains largely unexplored. The present study intended to decipher the i) association between the intratumoral expression of ERα, HER-2, pan-RAS, p53 and aromatase, ii) their relationship with the clinicohistological parameters and serum sex hormones, and iii) their prognostic relevance in mCMT.

Materials and methods

Tumor samples from animals with mCMT (n = 27) were subjected to histopathology and immunohistochemistry for ERα, HER-2, pan-RAS, p53, and aromatase. Serum estradiol and progesterone levels from dogs with mCMT and healthy dogs (n = 10) were estimated using chemiluminescence immunoassay. Kaplan-Meier analysis (log-rank test), univariable and multivariable Cox regression, and Mann-Whitney U test were employed for statistical analysis.

Results

The expression of aromatase, ERα, pan-RAS, p53, and HER-2 were detected in 100 %, 88 %, 67 %, 12 % and 11 % of mCMT cases, respectively. Serum estradiol and progesterone were significantly higher in mCMT-affiliated patients than healthy dogs. Also, a positive association of ERα expression with aromatase (stromal component) and HER2 expression in mCMT patients was detected. Furthermore, intratumoral aromatase expression and p53 overexpression were correlated with tumor size and angiogenesis, respectively. No relationship was detected between other tumor markers, serum steroid hormones and clinicohistological parameters. P53 overexpression was associated with poor survival in mCMT patients.

Conclusion

Overexpression of aromatase and p53 overexpression has clinical relevance in mCMT, and an intratumoral ERα expression is positively associated with HER-2 expression and aromatase production by stromal components.
目的:在犬乳腺恶性肿瘤(mCMT)微环境中,原癌蛋白与肿瘤抑制蛋白之间的交错相互作用在很大程度上仍未被研究。本研究旨在解释i)肿瘤内ERα、HER-2、pan-RAS、p53和芳香化酶表达之间的关系,ii)它们与临床组织学参数和血清性激素的关系,以及iii)它们与mCMT预后的相关性。材料和方法:对27例mCMT动物肿瘤标本进行组织病理学和免疫组化检测,检测ERα、HER-2、pan-RAS、p53和芳香化酶。采用化学发光免疫分析法对mCMT犬和健康犬(n = 10)血清雌二醇和黄体酮水平进行测定。采用Kaplan-Meier分析(log-rank检验)、单变量和多变量Cox回归、Mann-Whitney U检验进行统计分析。结果:芳香化酶、ERα、pan-RAS、p53、HER-2在mCMT患者中的表达分别为100%、88%、67%、12%和11%。mcmt患者的血清雌二醇和黄体酮明显高于健康犬。此外,在mCMT患者中检测到ERα表达与芳香化酶(基质成分)和HER2表达呈正相关。此外,瘤内芳香酶表达和p53过表达分别与肿瘤大小和血管生成相关。其他肿瘤标志物、血清类固醇激素与临床组织学参数无相关性。P53过表达与mCMT患者的低生存率相关。结论:芳香化酶过表达和p53过表达在mCMT中具有临床相关性,瘤内ERα表达与HER-2表达和基质成分产生芳香化酶呈正相关。
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引用次数: 0
Assessment of pathogenic yeast species in the oral cavity of dogs: Antifungal susceptibility and implications for human health 犬口腔病原菌种类的评估:抗真菌敏感性和对人类健康的影响。
IF 2.2 3区 农林科学 Q1 VETERINARY SCIENCES Pub Date : 2025-02-01 DOI: 10.1016/j.rvsc.2024.105504
Cristiane Coimbra de Paula , Diniz Pereira Leite Junior , Ricardo Cesar Tavares Carvalho , Tathiana Ferguson Motheo
Companions' animals can present a risk for the transmission of opportunistic diseases to their owners, including those caused by yeasts of the Candida genus residing in their oral microbiota. This study aimed to isolate and identify yeasts from the oral cavity of dogs and assess their susceptibility to antifungals. Yeast species were identified using automated methods MALDI-TOF-MS and VITEK 2 from 50 dogs (aged 2–4 years, various breeds). Among the evaluated animals Candida albicans (37.5 %) and Candida parapsilosis (25 %) were predominant, followed by other species including C. haemuloni, C. tropicalis, C. krusei, and Trichosporon asahii (12.5 % each). In this study, antifungal susceptibility testing revealed a general susceptibility with limited resistance. Although most antifungals exhibited good efficacy, some Candida strains demonstrated resistance to fluconazole (FLC), caspofungin (CAS), and amphotericin B (AMPB). These findings highlight the importance of conducting fungal cultures and antifungigram testing for the effective management of fungal infections in humans and animals. Therefore, vigilant monitoring and control measures are essential to reduce the transmission of opportunistic diseases from pets to humans.
伴侣的动物有可能向其主人传播机会性疾病,包括由居住在其口腔微生物群中的念珠菌属酵母菌引起的疾病。本研究旨在从犬口腔中分离和鉴定酵母,并评估其对抗真菌药物的敏感性。采用MALDI-TOF-MS和VITEK 2自动方法对50只犬(年龄2-4岁,不同品种)的酵母菌进行鉴定。以白色念珠菌(37.5%)和假丝酵母菌(25%)为主,其次为haemuloni念珠菌、热带念珠菌、krusei念珠菌和asahii Trichosporon(12.5%)。在这项研究中,抗真菌药敏试验显示一般的敏感性和有限的耐药性。虽然大多数抗真菌药物表现出良好的疗效,但一些念珠菌菌株对氟康唑(FLC)、caspofungin (CAS)和两性霉素B (AMPB)表现出耐药性。这些发现强调了进行真菌培养和抗真菌谱测试对有效管理人类和动物真菌感染的重要性。因此,警惕的监测和控制措施对于减少机会性疾病从宠物传播给人类至关重要。
{"title":"Assessment of pathogenic yeast species in the oral cavity of dogs: Antifungal susceptibility and implications for human health","authors":"Cristiane Coimbra de Paula ,&nbsp;Diniz Pereira Leite Junior ,&nbsp;Ricardo Cesar Tavares Carvalho ,&nbsp;Tathiana Ferguson Motheo","doi":"10.1016/j.rvsc.2024.105504","DOIUrl":"10.1016/j.rvsc.2024.105504","url":null,"abstract":"<div><div>Companions' animals can present a risk for the transmission of opportunistic diseases to their owners, including those caused by yeasts of the <em>Candida</em> genus residing in their oral microbiota. This study aimed to isolate and identify yeasts from the oral cavity of dogs and assess their susceptibility to antifungals. Yeast species were identified using automated methods MALDI-TOF-MS and VITEK 2 from 50 dogs (aged 2–4 years, various breeds). Among the evaluated animals <em>Candida albicans</em> (<em>37.5 %)</em> and <em>Candida parapsilosis</em> (25 %) were predominant, followed by other species including <em>C. haemuloni, C. tropicalis, C. krusei,</em> and <em>Trichosporon asahii</em> (12.5 % each). In this study, antifungal susceptibility testing revealed a general susceptibility with limited resistance. Although most antifungals exhibited good efficacy, some <em>Candida</em> strains demonstrated resistance to fluconazole (FLC), caspofungin (CAS), and amphotericin B (AMP<img>B). These findings highlight the importance of conducting fungal cultures and antifungigram testing for the effective management of fungal infections in humans and animals. Therefore, vigilant monitoring and control measures are essential to reduce the transmission of opportunistic diseases from pets to humans.</div></div>","PeriodicalId":21083,"journal":{"name":"Research in veterinary science","volume":"183 ","pages":"Article 105504"},"PeriodicalIF":2.2,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142829769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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Research in veterinary science
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