Parasitologia (Basel, Switzerland)最新文献_第9页

Environmental Correlates of Prevalence of an Intraerythrocytic Apicomplexan Infecting Caribbean Damselfish 红细胞内ApiComplex感染加勒比大豆鱼患病率的环境相关性

Parasitologia (Basel, Switzerland) Pub Date : 2021-05-02 DOI: 10.3390/PARASITOLOGIA1020009

Akacia K. Halliday-Isaac, Jennilee B. Robinson, E. Cruz‐Rivera, A. Campbell, P. Sikkel

{"title":"Environmental Correlates of Prevalence of an Intraerythrocytic Apicomplexan Infecting Caribbean Damselfish","authors":"Akacia K. Halliday-Isaac, Jennilee B. Robinson, E. Cruz‐Rivera, A. Campbell, P. Sikkel","doi":"10.3390/PARASITOLOGIA1020009","DOIUrl":"https://doi.org/10.3390/PARASITOLOGIA1020009","url":null,"abstract":"Parasites are an integral part of coral reef ecosystems due to their influences on population dynamics, biodiversity, community structure, and food web connectivity. The Phylum Apicomplexa contains ubiquitous animal associates including the causative agents of globally important human diseases such as malaria and cryptosporidiosis. Despite their ubiquity, little is known about the biology, ecology, or distribution of these microorganisms in natural animal populations. In the US Virgin Islands, the dusky damselfish (Stegastes adustus) had a high but variable incidence of a Haemohormidium-like blood apicomplexan among 30 sites sampled. Microscopic analyses of blood smears allowed us to group these fish as infected, having low intensity infections, or uninfected. Regression analyses detected no significant differences in the condition indices (expressed as length–mass ratio). However, infection was clearly associated with potentially extremely high leukocyte counts among infected S. adustus that were not seen in uninfected fish. These results suggested the potential for some impact on the host. Linear mixed effects models indicated that S. adustus population density and meridional flow velocity were the main predictors of apicomplexan prevalence, with presence of other Stegastes species, population distance from watershed, zonal flow velocity, the complexity of the surrounding habitat, and season not showing any significant relationship with fish infection.","PeriodicalId":74398,"journal":{"name":"Parasitologia (Basel, Switzerland)","volume":"1 1","pages":"69-82"},"PeriodicalIF":0.0,"publicationDate":"2021-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3390/PARASITOLOGIA1020009","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42337942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Ocular Toxoplasmosis: Mechanisms of Retinal Infection and Experimental Models 眼弓形虫病:视网膜感染机制和实验模型

Parasitologia (Basel, Switzerland) Pub Date : 2021-04-15 DOI: 10.3390/PARASITOLOGIA1020007

V. Rodriguez Fernandez, Giovanni Casini, F. Bruschi

{"title":"Ocular Toxoplasmosis: Mechanisms of Retinal Infection and Experimental Models","authors":"V. Rodriguez Fernandez, Giovanni Casini, F. Bruschi","doi":"10.3390/PARASITOLOGIA1020007","DOIUrl":"https://doi.org/10.3390/PARASITOLOGIA1020007","url":null,"abstract":"Ocular toxoplasmosis (OT) is caused by the parasite Toxoplasma gondii and affects many individuals throughout the world. Infection may occur through congenital or acquired routes. The parasites enter the blood circulation and reach both the retina and the retinal pigment epithelium, where they may cause cell damage and cell death. Different routes of access are used by T. gondii to reach the retina through the retinal endothelium: by transmission inside leukocytes, as free parasites through a paracellular route, or after endothelial cell infection. A main feature of OT is the induction of an important inflammatory state, and the course of infection has been shown to be influenced by the host immunogenetics. On the other hand, there is evidence that the T. gondii phenotype also has an impact on the distribution of the pathology in different areas. Although considerable knowledge has been acquired on OT, a deeper knowledge of its mechanisms is necessary to provide new, more targeted treatment strategies. In particular, in addition to in vitro and in vivo experimental models, organotypic, ex vivo retinal explants may be useful in this direction.","PeriodicalId":74398,"journal":{"name":"Parasitologia (Basel, Switzerland)","volume":"1 1","pages":"50-60"},"PeriodicalIF":0.0,"publicationDate":"2021-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3390/PARASITOLOGIA1020007","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45534188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

First Report of Ixodes scapularis Ticks Parasitizing a North American Porcupine in Canada 肩胛硬蜱在加拿大寄生北美豪猪的首次报告

Parasitologia (Basel, Switzerland) Pub Date : 2021-04-01 DOI: 10.3390/PARASITOLOGIA1020006

John D. Scott

引用次数: 0

Seroprevalence and Risk Factors for Toxoplasma gondii Infection in Sheep and Goats from Romania 罗马尼亚绵羊和山羊刚地弓形虫感染血清阳性率及危险因素分析

Parasitologia (Basel, Switzerland) Pub Date : 2021-03-25 DOI: 10.3390/PARASITOLOGIA1020005

I. Hotea, V. Herman, E. Tîrziu, O. Colibar, I. Brudiu, C. Sîrbu, G. Dărăbuș

引用次数: 7

Parasites as Disruptors: From Ecology and Evolution, through Cell and Molecular Biology to Clinical and Veterinary Medicine 寄生虫作为破坏者:从生态学和进化，通过细胞和分子生物学到临床和兽医

Parasitologia (Basel, Switzerland) Pub Date : 2021-03-19 DOI: 10.3390/PARASITOLOGIA1010004

G. Hide

引用次数: 0