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Optimization of a Conventional Assay into SYBR Green Real-Time PCR for the Detection of the Nc5 Segment from Neospora caninum 犬新孢子虫Nc5片段SYBR Green实时荧光定量PCR检测方法的优化
IF 1.2 3区 农林科学 Q4 PARASITOLOGY Pub Date : 2025-01-03 DOI: 10.1007/s11686-024-00939-3
Flávia Moreira da Fonseca, Marilia de Oliveira Koch, Ana Paula Sato, Maria Constanza Rodriguez, Rosangela Locatelli-Dittrich

Purpose

The aim of the present study was to establish a SYBR Green-based real-time PCR assay for detection of the Nc5 segment from the Neospora caninum genome.

Methods

The oligonucleotides sequences targeting the Nc5 gene previously reported and designed in-house were validated. Two Primer sets were evaluated and tested in four different combinations. The NP7/NP10 assay was selected and reaction conditions optimized. Efficiency, analytical sensitivity, precision and specificity were assessed. The assay was evaluated in triplicate, in three independent PCR runs performed by two technicians to generate robust results.

Results

The standard curve determined by tenfold serial dilutions (1 to 1 × 10–7) established a reaction efficiency (E) of 102.34%, a correlation coefficient (R2) of 0.999 and a slope of -3.267. LOD of the real-time PCR assay was 0.456 tachyzoites DNA per reaction, as compared to 45.62 for the conventional method. SYBR green real-time PCR was 100 times more sensitive than the conventional method. Precision analysis showed 100% intra- and inter-assay repeatability at the minimum detection limit. The mean assay coefficient of variation (CV%) was 4.19% and standard deviation (SD) 1.67%. No significant differences between the means of Cq in the replicates and technicians (P > 0.05) was found, indicating that the assay is robust and accurate. The applicability of the assay was tested and N. caninum DNA was detected in milk, blood, amniotic fluid, placenta and different tissue samples.

Conclusion

The protocol had high specificity, confirmed by melting curve analysis and no cross-reactions with other tested microorganisms. The SYBR Green-based PCR protocol standardized in this study is a highly sensitive and specific method, reproducible and applicable for the detection of N. caninum in different biological samples.

目的建立基于SYBR green的犬新孢子虫基因组Nc5片段实时PCR检测方法。方法对国内已报道和设计的靶向Nc5基因的寡核苷酸序列进行验证。两组引物以四种不同的组合进行评估和测试。选择NP7/NP10检测方法,优化反应条件。评估了效率、分析灵敏度、精密度和特异性。该分析在三次重复中进行评估,在三次独立的PCR运行中由两名技术人员进行,以产生可靠的结果。结果10倍连续稀释(1 ~ 1 × 10-7)得到的标准曲线反应效率(E)为102.34%,相关系数(R2)为0.999,斜率为-3.267。实时PCR检测的LOD为0.456速殖子DNA /反应,而传统方法为45.62。SYBR绿色实时PCR的灵敏度是常规方法的100倍。精密度分析显示,在最低检出限下,检测内和检测间的重复性为100%。平均变异系数(CV%)为4.19%,标准差(SD)为1.67%。重复组和技术人员的Cq平均值无显著差异(P > 0.05),表明该方法可靠、准确。对该方法的适用性进行了测试,并在牛奶、血液、羊水、胎盘和不同组织样本中检测了犬链球菌DNA。结论该方案具有较高的特异性,经熔解曲线分析证实,与其他被试微生物无交叉反应。本研究标准化的基于SYBR green的PCR方法灵敏度高,特异性强,重复性好,适用于不同生物样品中犬链球菌的检测。
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引用次数: 0
Flies as Carriers of Gastrointestinal Protozoa of Interest in Public Health in the Northeast of Brazil 苍蝇是巴西东北部公共卫生领域关注的胃肠道原生动物的携带者。
IF 1.2 3区 农林科学 Q4 PARASITOLOGY Pub Date : 2024-11-05 DOI: 10.1007/s11686-024-00935-7
João Victor Batista dos Santos, Anna Luiza Hora dos Santos, André Mota Alves, Matheus Resende de Oliveira, Kalina Maria de Medeiros Gomes Simplicio, Lorena Maciel Santos Silva, João Victor de Jesus, Michelle Evangelista Soares, Ana Cinthia Santos da Costa, Weslania Sousa Inacio da Silva, Cláudia Moura de Melo, Rubens Riscala Madi, Victor Fernando Santana Lima

Purpouse

This study aimed to assess the influence of the presence of synanthropic flies in food preparation environments on the transmission of potentially zoonotic gastrointestinal protozoa.

Methods

Flies were captured using a glass containing water, fruits, and pieces of protein.

Results

Approximately 260 flies from four different species were captured: Musca domestica (76.92%; 200/260), Cochliomyia hominivorax (17.31%; 45/260), Lucilia cuprina (3.85%; 10/260), and Hydrotaea aenescens (1.92%; 5/260). Protozoa were identified through microscopic analysis after macerating these arthropods contained in their respective eppendorfs, using two techniques, namely Mini-FLOTAC® and centrifugal sedimentation with Ziehl–Neelsen staining. The analysis revealed a concerning scenario regarding the epidemiological chain of gastrointestinal protozoa in Sergipe, Northeast Brazil. The positivity rate was 26.92% (14/52) of the pools, with 100.00% (5/5) in Aracaju, 30.00% (3/10) in Nossa Senhora do Socorro, 27.27% (3/11) in Nossa Senhora da Glória, 12.50% (2/16) in Carmópolis, and 10.00% (1/10) in Nossa Senhora das Dores. Two species of protozoa were identified, namely Cryptosporidium spp. (23.08%; 12/52) and Entamoeba spp. (9.62%; 5/52). The involvement of two fly species in the maintenance of the life cycle of these protozoa was noticeable, specifically M. domestica (27.50%; 11/40) and C. hominivorax (22.22%; 2/9).

Conclusions

Counties analyzed had an human development index (HDI) considered medium; however, they still faced socioeconomic problems such as absence of sanitation systems, waste accumulation in the streets, and illegal waste disposal, which could favor the proliferation of these vectors and the spread of these gastrointestinal protozoa.

目的本研究旨在评估食物准备环境中存在的合欢蝇对潜在人畜共患病胃肠道原生动物传播的影响:方法:使用装有水、水果和蛋白质碎片的玻璃杯捕捉苍蝇:结果:捕获了来自四个不同物种的约 260 只苍蝇:结果:捕获了来自四个不同物种的约 260 只苍蝇:家蝇(Musca domestica,76.92%;200/260)、人蝇(Cochliomyia hominivorax,17.31%;45/260)、杯蝇(Lucilia cuprina,3.85%;10/260)和水蝇(Hydrotaea aenescens,1.92%;5/260)。在浸渍了这些节肢动物后,使用 Mini-FLOTAC® 和离心沉淀与齐氏-奈尔森染色两种技术,通过显微镜分析鉴定了原生动物。分析结果显示,巴西东北部塞尔希培的胃肠道原生动物流行病学链情况令人担忧。阳性率为26.92%(14/52),其中阿拉卡茹(Aracaju)为100.00%(5/5),索科罗圣母院(Nossa Senhora do Socorro)为30.00%(3/10),格洛利亚圣母院(Nossa Senhora da Glória)为27.27%(3/11),卡莫波利斯(Carmópolis)为12.50%(2/16),多雷斯圣母院(Nossa Senhora das Dores)为10.00%(1/10)。发现了两种原生动物,即隐孢子虫属 (23.08%; 12/52)和恩塔米巴原虫属 (9.62%; 5/52)。值得注意的是,有两种苍蝇参与了这些原生动物生命周期的维持,特别是家蝇(27.50%;11/40)和人蝇(22.22%;2/9):所分析的县的人类发展指数(HDI)被认为是中等的;然而,这些县仍然面临着社会经济问题,如缺乏卫生系统、垃圾在街道上堆积、非法处理垃圾等,这些问题可能有利于这些病媒的扩散和这些肠道原生动物的传播。
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引用次数: 0
Retraction Note: The Protective Role of Toll-Like Receptor Agonist Monophosphoryl Lipid A against Vaccinated Murine Schistosomiasis 撤稿说明:Toll-Like 受体激动剂单磷脂 A 对接种疫苗的小鼠血吸虫病的保护作用。
IF 1.2 3区 农林科学 Q4 PARASITOLOGY Pub Date : 2024-10-28 DOI: 10.1007/s11686-024-00936-6
Ibrahim Aly, Essam H. Ibrahim, Rabab S. Hamad, Hoda E. L. Sayed, Sama M. N. Attiyah, Wafaa E-Komy, Hamed A. Ghramh, Ali Alshehri, Khalid M. Alsyaad, Mohammed Alshehri, Mona Kilany, Kareem Morsy, Attalla F. El-kott, Ramadan Taha
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引用次数: 0
First Modern Morphological and Molecular Description of Saccocoelium Cephali Larvae Stages (Digenea: Haploporidae) from the Black Sea 首次对黑海 Saccocoelium Cephali 幼虫阶段(Digenea: Haploporidae)进行现代形态学和分子描述。
IF 1.2 3区 农林科学 Q4 PARASITOLOGY Pub Date : 2024-10-26 DOI: 10.1007/s11686-024-00934-8
Yuliya V. Belousova, Dmitry M. Atopkin

Purpose

Knowledge of haploporid trematode larvae is very poor. Until recently, only scattered reports from the Black and Medditeranean Seas were known. The present research is the first report of haploporid cercariae S. cephali from the gastropod Hydrobia acuta inhabiting the Black Sea. Thus, the present study aimed to investigate the larvae of one species from the Haploporidae family.

Methods

Hydrobia acuta molluscs were collected in the estuary of the Chernaya River (the Black Sea) during 2011–2013 and examined for trematode larvae. Found parthenitae were drawn and preserved for DNA extractions. Morphological features were compared to nominal species, and molecular comparisons were made of the subunit ribosomal DNA with other Haploporidae species.

Results

The haploporid parthenitae were found in the gonads of Hydrobia acuta molluscs. Most of the morphological characteristics of the specimens investigated agree with those of Saccococoelium sp. and are closest to those of S. cephali by shape and length of the body, ratio of suckers, ratio of tail length to body, shape, and size of the pharynx. Phylogenetic analysis from our study generated with Bayesian algorithm showed that studied cercariae specimens from the Black Sea were within the hapolporine clade and closely related to S. cephali from Spain.

Conclusion

Morphological characteristics of cercariae emerging from Hydrobia acuta from the Black Sea and the analysis of partial 28S rDNA sequences support the conspecificity of the parasite with S. cephali mature worms from the Mediterranean Sea.

目的:人们对单细胞吸虫幼虫的了解非常有限。直到最近,也只有来自黑海和地中海的零星报道。本研究首次报告了栖息在黑海的腹足类水蚤(Hydrobia acuta)中的单棘蚴笛笛蚴(S. cephali)。因此,本研究旨在调查 Haploporidae 科中一个物种的幼虫。方法:2011-2013 年期间,在切尔纳亚河(黑海)河口采集了 Hydrobia acuta 软体动物,并对其进行了吸虫幼虫检查。发现的部分虫体被提取并保存以用于 DNA 提取。将形态特征与标称物种进行比较,并将核糖体 DNA 亚单位与其他 Haploporidae 物种进行分子比较:结果:在 Acuta Hydrobia 软体动物的性腺中发现了单孔虫。调查标本的形态特征大多与 Saccocoelium sp.一致,在身体的形状和长度、吸盘的比例、尾长与身体的比例、咽部的形状和大小等方面与 S. cephali最为接近。利用贝叶斯算法进行的系统发育分析表明,所研究的黑海恙虫标本属于单孢子虫支系,与西班牙的 S. cephali 关系密切:结论:黑海 Acuta 水螅蚴的形态特征和部分 28S rDNA 序列分析表明,该寄生虫与地中海的 S. cephali 成熟蠕虫具有同种性。
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引用次数: 0
Multiple Liver and Jejunal Abscesses Due to Fasciola Flat Worm: An Uncommon Case Report from Iran 扁平苔藓引起的多发性肝和空肠脓肿:来自伊朗的罕见病例报告
IF 1.2 3区 农林科学 Q4 PARASITOLOGY Pub Date : 2024-10-25 DOI: 10.1007/s11686-024-00931-x
Shahriar Alian, Shadi Shayesteazar, Eissa Soleymani, Farzad Yazdani, Mohammad Reza Azimi, Mahdi Fakhar

Introduction

Fascioliasis is a zoonotic condition precipitated by the trematode known as Fasciola spp. This parasite affected almost 2.4 to 17 million individuals in the world. The occurrence of liver abscesses is an infrequent phenomenon, potentially arising as a secondary outcome of cholangitis or hepatic inflammation. In this study, we have reported a case of a hepatic abscess induced by Fasciola spp.

Case Report

A 29-year-old male presented with generalized abdominal discomfort, primarily concentrated in the right upper quadrant, which had progressively worsened over the past seven months. The patient did mention a weight loss of approximately 10 kg during the course of their illness, along with increasing fatigue. Eosinophilia was seen too (35%). The stool exam test was negative. An enteroscopy was conducted, revealing no pathological abnormalities. Following this, the surgeon prescribed a surgical biopsy of the mass, which yielded a diagnosis of multiple eosinophilic granulomatous abscesses within the jejunal wall and mesentery. The Fasciola IgG test returned a positive result. After of follow-up, the patient fully recovered.

Conclusion

Fascioliasis should be considered in the differential diagnoses of liver abscesses. Because of earlier diagnosis, can be avoided of invasive diagnostic tests and therapeutic interventions can be started earlier.

导言:法氏囊虫病是一种人畜共患病,由被称为法氏囊虫属的吸虫引起。肝脓肿的发生并不常见,可能是胆管炎或肝脏炎症的继发结果。在本研究中,我们报告了一例由法氏囊病菌诱发的肝脓肿病例:病例报告:一名 29 岁的男性患者因全身腹部不适就诊,主要集中在右上腹,在过去 7 个月中逐渐加重。患者提到在患病期间体重下降了约 10 公斤,并伴有越来越多的疲劳感。嗜酸性粒细胞增多(35%)。粪便检查呈阴性。进行了肠镜检查,未发现病理异常。随后,外科医生对肿块进行了手术活检,诊断为空肠壁和肠系膜内的多发性嗜酸性肉芽肿脓肿。法氏囊 IgG 检测结果呈阳性。随访后,患者完全康复:结论:在肝脓肿的鉴别诊断中应考虑法氏囊病。结论:在肝脓肿的鉴别诊断中应考虑法氏囊虫病,因为早期诊断可以避免侵入性诊断检测,治疗措施也可以更早开始。
{"title":"Multiple Liver and Jejunal Abscesses Due to Fasciola Flat Worm: An Uncommon Case Report from Iran","authors":"Shahriar Alian,&nbsp;Shadi Shayesteazar,&nbsp;Eissa Soleymani,&nbsp;Farzad Yazdani,&nbsp;Mohammad Reza Azimi,&nbsp;Mahdi Fakhar","doi":"10.1007/s11686-024-00931-x","DOIUrl":"10.1007/s11686-024-00931-x","url":null,"abstract":"<div><h3>Introduction</h3><p>Fascioliasis is a zoonotic condition precipitated by the trematode known as <i>Fasciola</i> spp. This parasite affected almost 2.4 to 17 million individuals in the world. The occurrence of liver abscesses is an infrequent phenomenon, potentially arising as a secondary outcome of cholangitis or hepatic inflammation. In this study, we have reported a case of a hepatic abscess induced by <i>Fasciola</i> spp.</p><h3>Case Report</h3><p>A 29-year-old male presented with generalized abdominal discomfort, primarily concentrated in the right upper quadrant, which had progressively worsened over the past seven months. The patient did mention a weight loss of approximately 10 kg during the course of their illness, along with increasing fatigue. Eosinophilia was seen too (35%). The stool exam test was negative. An enteroscopy was conducted, revealing no pathological abnormalities. Following this, the surgeon prescribed a surgical biopsy of the mass, which yielded a diagnosis of multiple eosinophilic granulomatous abscesses within the jejunal wall and mesentery. The <i>Fasciola</i> IgG test returned a positive result. After of follow-up, the patient fully recovered.</p><h3>Conclusion</h3><p>Fascioliasis should be considered in the differential diagnoses of liver abscesses. Because of earlier diagnosis, can be avoided of invasive diagnostic tests and therapeutic interventions can be started earlier.</p></div>","PeriodicalId":6932,"journal":{"name":"Acta Parasitologica","volume":"69 4","pages":"2051 - 2054"},"PeriodicalIF":1.2,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142492671","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
Ultrastructural Changes in the Tegument and Tissues of Fasciola hepatica Adults and Their Eggs Due to the Effect of an Ethyl Acetate Extract of Artemisia ludoviciana Nutt. spp Mexicana 乙酸乙酯提取物对墨西哥蒿(Artemisia ludoviciana Nutt.
IF 1.2 3区 农林科学 Q4 PARASITOLOGY Pub Date : 2024-10-25 DOI: 10.1007/s11686-024-00933-9
Alonso Ezeta-Miranda, José Guillermo Avila-Acevedo, Adriana Montserrat Espinosa-González, José del Carmen Benítez-Flores, Gerardo Francisco-Marquez, Yolanda Vera-Montenegro

Purpose

The objective of the present work was to evaluate the effect of an ethyl acetate extract of Artemisia ludoviciana on the viability of adult Fasciola hepatica parasites and eggs.

Methods

The collection of plant material was performed as described in previous reports. The dried material was macerated with ethyl acetate. Ovicidal assays were performed at concentrations of 100, 200, 300, 400 and 500 mg/L A. ludoviciana extract. Bioassays of fasciolicidal efficacy in adult specimens of F. hepatica were performed at extract concentrations of 125, 250, 375 and 500 mg/L. The effects of triclabendazole, a reference drug, and artemisinin were also evaluated.

Results

The ovicidal effectiveness of the extracts obtained after 16 h of incubation at concentrations of 100, 200, 300, 400 and 500 mg/L was 48%, 52%, 87%, 89% and 92%, respectively (p < 0.05), and the fasciolicidal efficiencies during the first 24 h post-treatment ranged from 82 to 100% (p < 0.05). In both cases, scanning electron microscopy revealed damage to the shells of the eggs treated with the extract, compromising their stability. In adult fasciolae, alterations to the integument that resulted in its erosion and detachment were observed. Histopathological studies of the affected specimens revealed damage to the tegumentary and subtegumentary cells and alterations in the ovaries, testicles and intestine. This damage was more severe after treatment with the extract than after treatment with the other compounds.

Methods

Extract of A. ludoviciana causes damage to the tegument, intestine, ovaries, testes and eggs of F. hepatica.

目的:本研究的目的是评估芦蒿乙酸乙酯提取物对肝吸虫成虫和虫卵活力的影响:方法:植物材料的采集按照之前报告中的方法进行。干燥材料用乙酸乙酯浸渍。在浓度为 100、200、300、400 和 500 mg/L 的 A. ludoviciana 提取物中进行杀卵试验。在提取物浓度为 125、250、375 和 500 毫克/升时,对肝蝇成虫标本进行了杀蝇效果生物测定。同时还评估了参考药物三苯咪唑和青蒿素的效果:结果:在 100、200、300、400 和 500 毫克/升浓度下培养 16 小时后,提取物的杀卵效果分别为 48%、52%、87%、89% 和 92%(p 方法):A. ludoviciana 的提取物对 F. hepatica 的表皮、肠道、卵巢、睾丸和卵均有破坏作用。
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引用次数: 0
A New Species of Heligmonellidae (Nematoda) in Euryoryzomys russatus (Rodentia: Sigmodontinae) in the Atlantic Forest of Northeast Brazil 巴西东北部大西洋森林 Euryoryzomys russatus(啮齿目:Sigmodontinae)中的 Heligmonellidae(线虫纲)新物种。
IF 1.2 3区 农林科学 Q4 PARASITOLOGY Pub Date : 2024-10-16 DOI: 10.1007/s11686-024-00928-6
Natália Alves Costa, Rosana Gentile, Martin R. Alvarez, Arnaldo Maldonado Junior

Background

The genus Stilestrongylus (Freitas, Lent, and Almeida, 1937) is defined by having 24 or more subequal cuticular ridges, an asymmetrical caudal bursa, and a hypertrophied genital cone. It comprises 25 recognized species, mainly parasitizing cricetids, and shows significant diversification linked to the evolution of its hosts. Stilestrongylus magnumspiculum n. sp. is a newly described nematode species identified in the small intestine of the rodent Euryoryzomys russatus (Cricetidae, Sigmodontinae) from the Atlantic Forest of Northeast Brazil. This study aims to characterize the new species and its prevalence in host populations.

Methods

A total of 43 Euryoryzomys russatus individuals were collected and analyzed for parasitic infections. Morphological features of Stilestrongylus magnumspiculum n. sp. were examined, focusing on the number of ridges, synlophe characteristics, caudal bursa type, lobe hypertrophy, and the spicule length to body length ratio.

Results

The new species exhibited a prevalence of 21% among the sampled hosts. Distinctive morphological features were observed, including:the synlophe structure exhibited specific ridge patterns that differentiate it from other species within the genus; the caudal bursa was identified as a type 2-2-1; hypertrophy of the right lobe was observed, indicating notable morphological adaptation; rays 4 and 5 were found to be equivalent in size and diverged at the distal end; the spicule length to body length ratio (SpL/BL) was measured at 30–36%, representing the largest ratio recorded for the genus. In comparison, other Stilestrongylus species displayed the following ratios: S. rolandoi (21–33%), S. lanfrediae (25–29%), S. kaaguyporai (20–24%), S. inexpectatus (20–23%), and S. stilesi (26–28%).

Conclusions

This report presents Stilestrongylus magnumspiculum n. sp. as a new species of nematode, contributing to the diversity of the genus Stilestrongylus. The findings underscore the importance of studying host-parasite interactions within the Atlantic Forest ecosystem and provide a basis for future ecological and parasitological research.

背景:Stilestrongylus 属(Freitas、Lent 和 Almeida,1937 年)的定义是具有 24 个或更多的近相等的角质脊、不对称的尾囊和肥大的生殖锥。它包括 25 个公认的物种,主要寄生于环腹目动物,并随着宿主的进化而呈现出显著的多样化。Stilestrongylus magnumspiculum n. sp.是在巴西东北部大西洋森林的啮齿动物Euryoryzomys russatus(Cricetidae,Sigmodontinae)的小肠中发现的一种新描述的线虫。本研究旨在描述该新物种的特征及其在宿主种群中的流行情况:方法:共收集了 43 只 Euryoryzomys russatus,并对其寄生虫感染情况进行了分析。方法:共收集了 43 只 Euryoryzomys russatus,并对其寄生虫感染情况进行了分析。研究了 Stilestrongylus magnumspiculum n. sp.的形态特征,重点是脊的数量、合体特征、尾囊类型、叶肥大以及棘针长度与体长之比:结果:新物种在采样宿主中的流行率为 21%。观察到的独特形态特征包括:合鳃结构显示出与该属其他物种不同的特殊脊纹;尾囊被鉴定为 2-2-1 型;观察到右叶肥大,表明其形态适应性显著;发现第 4 和第 5 棱大小相当,但在远端分叉;测量到的脊柱长度与体长比率(SpL/BL)为 30-36%,是该属有记录以来最大的比率。相比之下,其他 Stilestrongylus 种类的比率如下:S. rolandoi (21-33%)、S. lanfrediae (25-29%)、S. kaaguyporai (20-24%)、S. inexpectatus (20-23%) 和 S. stilesi (26-28%):本报告将 Stilestrongylus magnumspiculum n. sp.列为线虫新种,为 Stilestrongylus 属的多样性做出了贡献。这些发现强调了研究大西洋森林生态系统中宿主与寄生虫之间相互作用的重要性,并为未来的生态学和寄生虫学研究提供了基础。
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引用次数: 0
A New Species of Anacanthorus (Dactylogyridae, Anacanthorinae) Parasitizing Gills of Hoplias aff. malabaricus (Bloch, 1794) (Characiformes, Erythrinidae) from the Caatinga Domain A New Species of Anacanthorus (Dactylogyridae, Anacanthorinae) Parasitizing Gills of Hoplias aff. malabaricus (Bloch, 1794) (Characiformes, Erythrinidae) from the Caatinga Domain.
IF 1.2 3区 农林科学 Q4 PARASITOLOGY Pub Date : 2024-10-16 DOI: 10.1007/s11686-024-00864-5
Priscilla de Oliveira Fadel Yamada, Maria Fernanda Barros Gouveia Diniz, Wallas Benevides Barbosa de Sousa, Fabio Hideki Yamada, Marcos Tavares-Dias

Introduction

Anacanthorus silvoi n. sp. (Dactylogyridae, Anacanthorinae) is described from the gills of Hoplias aff. malabaricus (Bloch, 1794) from the Salgado River, Ceará state, Brazil.

Materials and Methods

The monogeneans were affixed onto slides using Gray and Wess’s medium for examination of their sclerotized structures. For analysis of internal organs, a single specimen was preserved in 5% formalin, stained with Gomori’s trichrome, and mounted in Gray and Wess’s medium.

Results

Anacanthorus silvoi n. sp. is characterized by having a short broad tube MCO with a medial constriction (i.e., MCO with distal region wider than the proximal region, and flexed lateral flap in the distal region in A. cururutuiensis and a MCO with a small projection in the form of a hook in the distal region in A. siphonocommus).

Conclusions

The present study corroborates previous studies that the absence of an accessory piece is a characteristic shared by all Anacanthorus members parasites of Erythrinidae.

介绍:Anacanthorus silvoi n. sp. (Dactylogyridae, Anacanthorinae) 描述了巴西塞阿拉州萨尔加多河的 Hoplias aff:使用格雷和韦斯培养基将单吻藻粘贴在载玻片上,以检查其硬化结构。为了分析内部器官,将单个标本保存在 5%福尔马林中,用 Gomori 三色染色,然后装入格雷和韦斯培养基中:Anacanthorus silvoi n.sp.的特征是有一个短的宽管 MCO,带有内侧收缩(即 MCO 的远端区域比近端区域宽,A. cururutuiensis 的远端区域有弯曲的侧瓣,A. siphonocommus 的 MCO 远端区域有一个钩状的小突起):本研究证实了之前的研究结果,即无附属片是寄生于蝼蛄的所有 Anacanthorus 成员的共同特征。
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引用次数: 0
Acute Respiratory Syndrome Mimicking Shipping Sickness in Theileria buffeli Infected Buffalo Calf 水牛犊牛感染 Theileria buffeli 后出现的模仿运输病的急性呼吸道综合征。
IF 1.2 3区 农林科学 Q4 PARASITOLOGY Pub Date : 2024-10-10 DOI: 10.1007/s11686-024-00932-w
Varghese Raina, Y. Ajith, Sasi Adithya, S. Anandu, N. Athira, K. S. Athira, P. Preena, K. Vinodkumar, K. Mathew Manju, C. S. Mahima, Jose Akshaya, B. Bruce Alby, Ayshin Nafis, A. Arshana, Joby Tini, P. Asok Anandu, Gopinath Devi, George Arun, S. Ajithkumar

Benign theileriosis, caused by the members of the Theileria orientalis complex, can develop fatal clinical outbreaks characterized by acute respiratory manifestation in stressful conditions. This report describes the molecular diagnosis and clinical management of a recently transported buffalo calf with severe Theileria buffeli infection and associated acute pneumonia. A five-month-old male buffalo calf having an inter-state travel history three days back was presented with pyrexia, anorexia, weakness, mucoid rhinorrhoea, dyspnoea and diarrhoea from the day of procurement. The history and physical examination revealed a clinical presentation similar to shipping fever. Whereas, severe parasitemia of Theileria spp. with anaemia, thrombocytopenia and granulopenia were evident on laboratory investigation. The Theileria spp. infection was confirmed by PCR method using specific primers and the authentication was made by detailed sequence analysis. The small subunit rRNA was amplified using universal apicomplexan primers and the phylogenetic analysis was carried out for further characterisation. The animal was stabilized by steroid nebulization therapy and the specific chemotherapy was instigated using buparvaquone and sulphamethoxazole-trimethoprim combination. Supportive medications like non-steroidal anti-inflammatory drugs, antihistamines, antidiarrhoeals and vitamins were provided symptomatically. The animal showed a good response to therapy and recovered from parasitemia by day 10 and the molecular clearance was later confirmed on day 70 of therapy. The present case of Theileria buffeli infected buffalo calf with acute respiratory signs points towards the possible hemoparasitic outbreaks in transport-stressed animals with the signs of shipping fever-associated syndrome.

由东方毛癣菌(Theileria orientalis complex)引起的良性毛癣菌病可在应激条件下爆发以急性呼吸道表现为特征的致命性临床疫情。本报告描述了分子诊断和临床治疗的情况,该病例是一头最近被运来的水牛犊牛,它患有严重的水牛伊乐氏菌感染和相关的急性肺炎。一头五个月大的雄性水牛犊牛有三天前的跨州旅行史,从购买当天起就出现发热、厌食、虚弱、粘液性鼻出血、呼吸困难和腹泻。病史和体格检查显示其临床表现与船热相似。而在实验室检查中,明显发现了严重的寄生虫血症,包括贫血、血小板减少和粒细胞减少。通过使用特异引物的聚合酶链反应(PCR)方法证实了该病原体的感染,并通过详细的序列分析进行了鉴定。使用通用的 apicomplexan 引物扩增了小亚基 rRNA,并进行了系统发育分析以进一步确定特征。通过类固醇雾化疗法稳定了动物的病情,并使用布帕伐醌和磺胺甲噁唑-三甲氧苄嘧啶复方制剂进行了特异性化疗。此外,还对症提供了非甾体抗炎药、抗组胺药、止泻药和维生素等辅助药物。该动物对治疗反应良好,在治疗第 10 天就摆脱了寄生虫血症,随后在治疗第 70 天确认分子清除。本例水牛犊牛感染 Theileria buffeli 并伴有急性呼吸道症状的病例表明,运输紧张的动物可能会爆发血液寄生虫病,并伴有运输热相关综合征的症状。
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引用次数: 0
A Gallbladder Ceratomyxidae (Myxozoa: Bivalvulida) Parasite Described In Pimelodella cristata (Müller & Troschel, 1848) From the Eastern Amazon 亚马逊河东部的一种胆囊 Ceratomyxidae(粘虫纲:双壳类)寄生虫在 Pimelodella cristata (Müller & Troschel, 1848) 中的描述。
IF 1.2 3区 农林科学 Q4 PARASITOLOGY Pub Date : 2024-10-10 DOI: 10.1007/s11686-024-00930-y
Abthyllane Amaral de Carvalho, Roger Leomar da Silva Ferreira, Lilia Suzane de Oliveira Nascimento, Saturo Cardoso Morais, Rafaela Franco de Araujo, Maylo de Almeida Costa, Marcela Nunes Videira, Elane Guerreiro Giese

Purpose

The Myxozoa class is characterized by parasites that have valves joined by a suture line and polar capsules containing eversible spiral filamento and this class is considered an obligate parasite. The genus Ceratomyxa has approximately 300 species described in fish, both marine and freshwater fish, mainly infecting the gallbladder, but also occurring in the urinary bladder. This study describes a new species of Ceratomyxa in the Amazon region for Pimelodella cristata.

Methods

For these analyses, the fish were desensitized by means of a medullary section with the aid of a sharp metallic instrument. With the fish desensitized, the entire body surface was examined under a binocular stereoscopic microscope. The gallbladder fragments were collected and fixed in Davidson for histological analyses and in ethanol for molecular analyses.

Results

This parasite was found in the host’s gallbladder, with elongated spores in a decreasing shape in sutural view, measuring 1.64 ± 0.6 μm in length and 17.13 ± 2.6 μm in width. The polar capsules had a spherical shape of equal size and measured 1.36 ± 0.17 μm in length and 0.9 ± 0.05 μm in width, and each polar capsule contained 4 to 5 turns.

Conclusion

Morphological and phylogenetic analyzes denote that this is a new species of the genus Ceratomyxa.

目的:粘孢子虫类的特点是寄生虫的瓣膜由缝合线连接,极囊含有可逆的螺旋丝,该类寄生虫被认为是一种强制性寄生虫。Ceratomyxa 属在鱼类(包括海水鱼和淡水鱼)中描述了约 300 个物种,主要感染胆囊,但也发生在膀胱中。本研究描述了亚马逊地区 Pimelodella cristata 的 Ceratomyxa 新物种:为了进行这些分析,使用锋利的金属工具对鱼体髓部进行了脱敏处理。鱼体脱敏后,在双目立体显微镜下检查整个体表。收集胆囊碎片,固定在戴维森中进行组织学分析,固定在乙醇中进行分子分析:结果:在宿主的胆囊中发现了这种寄生虫,其细长的孢子在缝合线上呈递减状,长度为 1.64 ± 0.6 μm,宽度为 17.13 ± 2.6 μm。极囊呈球形,大小相等,长 1.36 ± 0.17 μm,宽 0.9 ± 0.05 μm,每个极囊包含 4 至 5 个匝:结论:形态学和系统发生学分析表明,这是 Ceratomyxa 属的一个新种。
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引用次数: 0
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Acta Parasitologica
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