scholarly journals Molecular Detection and Characterization of Goat Isolate ofTaenia hydatigenain Turkey

2012 ◽  
Vol 2012 ◽  
pp. 1-4 ◽  
Author(s):  
Armagan Erdem Utuk ◽  
Fatma Cigdem Piskin
Keyword(s):  
Ribosomal Rna ◽  
Molecular Detection ◽  
Sequence Data ◽  
Pcr Amplification ◽  
Small Subunit ◽  
Molecular Tools ◽  
Taenia Hydatigena ◽  
Nucleotide Sequence Data ◽  
First Time

The aim of this study was to provide molecular detection and characterization of the goat isolate ofTaenia hydatigenafrom Ankara province of Turkey. For this purpose, PCR amplification of small subunit ribosomal RNA (rrnS) and partial sequencing of mitochondrial cytochrome c oxidase subunit 1 (mt-CO1) genes were performed in a one-month-old dead goat. According to rrnS-PCR results, parasites were identified asTaeniaspp., and partial sequence of mt-CO1 gene was corresponding toT. hydatigena. At the end of the study, we concluded that molecular tools can be used to define species of parasites in cases where the key morphologic features cannot be detected. Nucleotide sequence data of Turkish goat isolate ofT. hydatigenawas submitted to GenBank for other researchers interested in this subject. By this study, molecular detection and characterization ofT. hydatigenawas done for the first time in Turkey.

Morphometric and molecular characterization of Parapharyngodon echinatus (Nematoda, Pharyngodonidae) from the Senegal gecko (Tarentola parvicarinata)

2008 ◽  
Vol 53 (3) ◽  
Author(s):  
Šárka Mašová ◽  
Vlastimil Baruš ◽  
Iveta Hodová ◽  
Iveta Matějusová ◽  
Petr Koubek ◽  
...  
Keyword(s):  
Ribosomal Rna ◽  
National Park ◽  
Small Subunit ◽  
West African ◽  
African Species ◽  
New Host ◽  
The Family ◽  
First Time ◽  
New Host Species

AbstractA West African species of gecko, Tarentola parvicarinata Joger (Gekkonidae), collected in the Niokolo Koba National Park in East Senegal is a new host species for the nematode Parapharyngodon echinatus (Rudolphi, 1819). Fifty one specimens of P. echinatus were studied under a light microscope and thirteen specimens were studied for the first time by a scanning electron microscope. The main differences between P. echinatus and other African species, especially Parapharyngodon micipsae (Seurat, 1917), were in the shape of annules on body cuticle, broad lateral alae and their terminations, the shape of the distal extremity of the spicule and number of outgrowths at the anterior cloacal lip. For the purposes of DNA characterization, partial sequence of the small subunit ribosomal RNA gene (SSU rRNA) was obtained from two specimens of P. echinatus. This is the first published sequence of a species from the family Pharyngodonidae.

scholarly journals Molecular characterization of Cryptosporidium isolates from humans in Ontario, Canada

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Rebecca A. Guy ◽  
Christine A. Yanta ◽  
Pia K. Muchaal ◽  
Marisa A. Rankin ◽  
Karine Thivierge ◽  
...  
Keyword(s):  
Ribosomal Rna ◽  
Gastrointestinal Disease ◽  
Demographic Data ◽  
Small Subunit ◽  
Molecular Tools ◽  
Cryptosporidium Hominis ◽  
Molecular Surveillance ◽  
Canadian Population ◽  
Stool Specimens

Abstract Background Cryptosporidiosis is a gastrointestinal disease with global distribution. It has been a reportable disease in Canada since 2000; however, routine molecular surveillance is not conducted. Therefore, sources of contamination are unknown. The aim of this project was to identify species and subtypes of Cryptosporidium in clinical cases from Ontario, the largest province in Canada, representing one third of the Canadian population, in order to understand transmission patterns. Methods A total of 169 frozen, banked, unpreserved stool specimens that were microscopy positive for Cryptosporidium over the period 2008–2017 were characterized using molecular tools. A subset of the 169 specimens were replicate samples from individual cases. DNA was extracted directly from the stool and nested PCR followed by Sanger sequencing was conducted targeting the small subunit ribosomal RNA (SSU) and glycoprotein 60 (gp60) genes. Results Molecular typing data and limited demographic data were obtained for 129 cases of cryptosporidiosis. Of these cases, 91 (70.5 %) were due to Cryptosporidium parvum and 24 (18.6%) were due to Cryptosporidium hominis. Mixed infections of C. parvum and C. hominis occurred in four (3.1%) cases. Five other species observed were Cryptosporidium ubiquitum (n = 5), Cryptosporidium felis (n = 2), Cryptosporidium meleagridis (n = 1), Cryptosporidium cuniculus (n = 1) and Cryptosporidium muris (n = 1). Subtyping the gp60 gene revealed 5 allelic families and 17 subtypes of C. hominis and 3 allelic families and 17 subtypes of C. parvum. The most frequent subtype of C. hominis was IbA10G2 (22.3%) and of C. parvum was IIaA15G2R1 (62.4%). Conclusions The majority of isolates in this study were C. parvum, supporting the notion that zoonotic transmission is the main route of cryptosporidiosis transmission in Ontario. Nonetheless, the observation of C. hominis in about a quarter of cases suggests that anthroponotic transmission is also an important contributor to cryptosporidiosis pathogenesis in Ontario.

scholarly journals Sequencing and Computational Approaches to Identification and Characterization of Microbial Organisms

2013 ◽  
Vol 5 ◽  
pp. BECB.S10886 ◽  
Author(s):  
Brijesh Singh Yadav ◽  
Venkateswarlu Ronda ◽  
Dinesh P. Vashista ◽  
Bhaskar Sharma
Keyword(s):  
Sequence Data ◽  
Microbial Interactions ◽  
Microbial Pathogens ◽  
Nucleotide Sequence Data ◽  
Computational Approaches ◽  
Microbial Detection ◽  
Sequencing Technologies ◽  
Sequencing Platforms ◽  
Identification And Characterization

The recent advances in sequencing technologies and computational approaches are propelling scientists ever closer towards complete understanding of human-microbial interactions. The powerful sequencing platforms are rapidly producing huge amounts of nucleotide sequence data which are compiled into huge databases. This sequence data can be retrieved, assembled, and analyzed for identification of microbial pathogens and diagnosis of diseases. In this article, we present a commentary on how the metagenomics incorporated with microarray and new sequencing techniques are helping microbial detection and characterization.

scholarly journals Prevalence and molecular characterization of Cryptosporidium spp. and Giardia duodenalis in dairy cattle in Gansu, northwest China

Parasite ◽  
2020 ◽  
Vol 27 ◽  
pp. 62
Author(s):  
Yilin Wang ◽  
Jianke Cao ◽  
Yankai Chang ◽  
Fuchang Yu ◽  
Sumei Zhang ◽  
...  
Keyword(s):  
Dairy Cattle ◽  
Ribosomal Rna ◽  
Triosephosphate Isomerase ◽  
Giardia Duodenalis ◽  
Northwest China ◽  
Small Subunit ◽  
Gastrointestinal Parasites ◽  
Rrna Gene ◽  
And Control

Cryptosporidium spp. and Giardia duodenalis are common gastrointestinal parasites with a broad range of hosts, including humans, livestock, and wildlife. To examine the infection status and assess the zoonotic potential of Cryptosporidium spp. and G. duodenalis in dairy cattle in Gansu, China, a total of 1414 fecal samples were collected from the rectum, with one sample collected from each individual animal. All the samples were tested using nested PCR based on the small subunit ribosomal RNA (SSU rRNA) gene of Cryptosporidium spp. and G. duodenalis. The overall infection rates of Cryptosporidium spp. and Giardia duodenalis were 4.2% (n = 59) and 1.0% (n = 14), respectively. Four Cryptosporidium species were identified: C. andersoni (n = 42), C. parvum (n = 12), C. bovis (n = 5), and C. ryanae (n = 1). In further analyses of subtypes of C. parvum isolates based on the 60 kDa glycoprotein (gp60) gene, five were successfully subtyped as IIdA19G1 (n = 4) and IIdA15G1 (n = 1). All 14 G. duodenalis isolates were identified as assemblage E using the triosephosphate isomerase (tpi) gene. The relatively low positive rates of Cryptosporidium spp. and G. duodenalis detected here and the predominance of non-human pathogenic species/assemblages of these parasites indicated their unique transmission dynamics in this area and the low level of threat posed to public health. However, continuous monitoring and further studies of these parasites should be conducted for the prevention and control of these pathogens.

scholarly journals An Assessment of the Molecular Diversity of Ticks and Tick-Borne Microorganisms of Small Ruminants in Pakistan

2020 ◽  
Vol 8 (9) ◽  
pp. 1428 ◽  
Author(s):  
Abdul Ghafar ◽  
Adil Khan ◽  
Alejandro Cabezas-Cruz ◽  
Charles G. Gauci ◽  
Sadaf Niaz ◽  
...  
Keyword(s):  
Sequence Data ◽  
Phylogenetic Analyses ◽  
Strong Support ◽  
Small Ruminants ◽  
Ixodid Ticks ◽  
Nucleotide Sequence Data ◽  
Health Significance ◽  
Second Internal Transcribed Spacer ◽  
Theileria Spp

This study investigated ticks and tick-borne microorganisms of small ruminants from five districts of the Federally Administered Tribal Area (FATA) of Pakistan. Morphological (n = 104) and molecular (n = 54) characterization of the ticks revealed the presence of six ixodid ticks: Rhipicephalus (Rh.) haemaphysaloides, Rh. microplus, Rh. turanicus, Haemaphysalis (Hs.) punctata, Hs. sulcata and Hyalomma anatolicum. Phylogenetic analyses of nucleotide sequence data for two mitochondrial (16S and cytochrome c oxidase 1) and one nuclear (second internal transcribed spacer) DNA regions provided strong support for the grouping of the six tick species identified in this study. Microfluidic real-time PCR, employing multiple pre-validated nuclear and mitochondrial genetic markers, detected 11 potential pathogens and endosymbionts in 72.2% of the ticks (n = 54) tested. Rickettsia (R.) massiliae was the most common pathogen found (42.6% of ticks) followed by Theileria spp. (33.3%), Anaplasma (A.) ovis and R. slovaca (25.9% each). Anaplasma centrale, A. marginale, Ehrlichia spp., R. aeschlimannii, R. conorii and endosymbionts (Francisella- and Coxiella-like) were detected at much lower rates (1.9–22.2%) in ticks. Ticks from goats (83.9%) carried significantly higher microorganisms than those from sheep (56.5%). This study demonstrates that ticks of small ruminants from the FATA are carrying multiple microorganisms of veterinary and medical health significance and provides the basis for future investigations of ticks and tick-borne diseases of animals and humans in this and neighboring regions.

scholarly journals Characterization of a pigeon paramyxovirus (PPMV-1) isolated from chickens in South Africa : research communication

2004 ◽  
Vol 71 (2) ◽  
Author(s):  
C. Abolnik ◽  
R.F. Horner ◽  
R. Maharaj ◽  
G.J. Viljoen
Keyword(s):  
South Africa ◽  
Nucleotide Sequence ◽  
Newcastle Disease ◽  
Sequence Data ◽  
Far East ◽  
Nucleotide Sequence Data ◽  
Sequence Identity ◽  
Death Time ◽  
The Far East

A paramyxovirus with a thermostability of 60 min (typical of velogenic viruses) and a mean death time of > 90 h (typical of lentogenic viruses) was isolated from layers near Mooi River, South Africa. Our results, based on comparative nucleotide sequence data indicated that the virus is pigeon paramyxovirus 1 (PPMV-1), a variant of Newcastle disease virus. The F0 cleavage site contains a 112RRKKRF117 motif, and the virus had 98 % sequence identity with PPMV-1 strains from the Far East. PPMV-1 was last reported in South Africa during the 1980s, with this being the first report of PPMV-1 isolated from chickens in South Africa.

Morphological and molecular characterization of renal ciliates infecting farmed snails in Spain

Parasitology ◽  
2009 ◽  
Vol 136 (7) ◽  
pp. 771-782 ◽  
Author(s):  
P. SEGADE ◽  
C. P. KHER ◽  
D. H. LYNN ◽  
R. IGLESIAS
Keyword(s):  
Ribosomal Rna ◽  
Small Subunit ◽  
Helix Aspersa ◽  
Rrna Genes ◽  
Nw Spain ◽  
Renal Epithelium ◽  
Morphological And Molecular Characterization ◽  
Severe Destruction ◽  
Helix Aspersa Maxima

SUMMARYRenal infections by parasitic ciliates were studied in adult snails of Helix aspersa aspersa and Helix aspersa maxima collected from 2 mixed rearing system-based heliciculture farms located in Galicia (NW Spain). The occurrence of ciliates was also examined in slugs (Deroceras reticulatum) invading the greenhouses where first growing and fattening of snails is carried out. Histological examinations revealed a severe destruction of the renal epithelium in heavily infected hosts. Three ciliate isolates, one from each host species, were obtained and grown in axenic cultures. Cultured and parasitic ciliates were characterized morphologically and morphometrically. In addition, the encystment behaviour, the occurrence of autogamy, and the sequences of the mitochondrial cytochrome-c oxidase subunit 1 (cox1) and the small subunit ribosomal RNA (SSU rRNA) genes were also studied in the 3 isolates. A polymorphic life cycle involving resting and reproductive cysts, together with the morphological and morphometrical characteristics and the confirmation that autogamy occurs within cysts, demonstrate that our ciliates belong to the species Tetrahymena rostrata (Kahl, 1926) Corliss, 1952. The 3 isolates formed a well-supported clade using both genetic markers, and were clearly separate from the strain ATCC® 30770™, which has been identified as Tetrahymena rostrata. We argue that our Spanish isolates should be regarded as Tetrahymena rostrata, and that the ATCC isolate should be regarded as a misidentification as neither cytological nor cytogenetical support for its identity has been presented.

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