scholarly journals Molecular Detection and Phylogenetic Analysis of Endosymbiont Wolbachia pipientis (Rickettsiales: Anaplasmataceae) Isolated from Dirofilaria immitis in Northwest of Iran

2019 ◽  
Author(s):  
Majid Khanmohammadi ◽  
Reza Falak ◽  
Ahmad Reza Meamar ◽  
Mehdi Arshadi ◽  
Lame Akhlaghi ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
Dna Sequences ◽  
Dirofilaria Immitis ◽  
Molecular Detection ◽  
Surface Protein ◽  
Coi Gene ◽  
Molecular Pattern ◽  
Filarial Nematodes ◽  
High Consistency ◽  
Wsp Gene

Background: The purpose of this study was molecular detection and phylogenetic analysis of Wolbachia species of Dirofilaria immitis. Methods: Adult filarial nematodes were collected from the cardiovascular and pulmonary arterial systems of natural­ly infected dogs, which caught in different geographical areas of Meshkin Shahr in Ardabil Province, Iran, during 2017. Dirofilaria immitis genomic DNA were extracted.  Phylogenetic analysis for proofing of D. immitis was car­ried out using cytochrome oxidase I (COI) gene. Afterward, the purified DNA was used to determine the molecular pattern of the Wolbachia surface protein (WSP) gene sequence by PCR. Results: Phylogeny and homology studies showed high consistency of the COI gene with the previously-registered sequences for D. immitis. Comparison of DNA sequences revealed no nucleotide variation between them. PCR showed that all of the collected parasites were infected with W. pipientis. The sequence of the WSP gene in Wolbach­ia species from D. immitis was significantly different from other species of Dirofilaria as well as other filarial spe­cies. The maximum homology was observed with the Wolbachia isolated from D. immitis. The greatest distance be­tween WSP nucleotides of Wolbachia species found between D. immitis and those isolated from Onchocerca lupi. Conclusion: PCR could be a simple but suitable method for detection of Wolbachia species. There is a pattern of host specificity between Wolbachia and Dirofilaria that can be related to ancestral evolutions. The results of this phylogenetic analysis and molecular characterization may help us for better identification of Wolbachia species and understanding of their coevolution.  

scholarly journals Immunoglobulin G Antibodies against the Endosymbionts of Filarial Nematodes (Wolbachia) in Patients with Pulmonary Dirofilariasis

2003 ◽  
Vol 10 (1) ◽  
pp. 180-181 ◽  
Author(s):  
F. Simón ◽  
G. Prieto ◽  
R. Morchón ◽  
C. Bazzocchi ◽  
C. Bandi ◽  
...  
Keyword(s):  
Immunoglobulin G ◽  
Dirofilaria Immitis ◽  
Surface Protein ◽  
Igg Antibodies ◽  
Healthy Individuals ◽  
Bacterial Endosymbiont ◽  
Filarial Nematodes ◽  
Pulmonary Dirofilariasis ◽  
Diagnostic Applications

ABSTRACT The dog parasite Dirofilaria immitis can infect humans. Patients with pulmonary dirofilariasis were tested for immunoglobulin G (IgG) antibodies against the surface protein of Wolbachia, the bacterial endosymbiont of D. immitis. These patients showed significantly higher IgG titers than healthy individuals from areas in which D. immitis was endemic as well as areas in which it was not endemic. Titration of anti-Wolbachia surface protein IgG could become useful for diagnostic applications.

Species delimitation in trematodes using DNA sequences: Middle-American Clinostomum as a case study

Parasitology ◽  
2016 ◽  
Vol 143 (13) ◽  
pp. 1773-1789 ◽  
Author(s):  
GERARDO PÉREZ-PONCE DE LEÓN ◽  
MARTÍN GARCÍA-VARELA ◽  
CARLOS D. PINACHO-PINACHO ◽  
ANA L. SERENO-URIBE ◽  
ROBERT POULIN
Keyword(s):  
Phylogenetic Analysis ◽  
Dna Sequences ◽  
Species Delimitation ◽  
Nuclear Gene ◽  
Species Tree ◽  
Coi Gene ◽  
Complex Life Cycle ◽  
Species Boundaries ◽  
Intermediate Hosts ◽  
Putative Species

SUMMARYThe recent development of genetic methods allows the delineation of species boundaries, especially in organisms where morphological characters are not reliable to differentiate species. However, few empirical studies have used these tools to delineate species among parasitic metazoans. Here we investigate the species boundaries of Clinostomum, a cosmopolitan trematode genus with complex life cycle. We sequenced a mitochondrial [cytochrome c oxidase subunit I (COI)] gene for multiple individuals (adults and metacercariae) from Middle-America. Bayesian phylogenetic analysis of the COI uncovered five reciprocally monophyletic clades. COI sequences were then explored using the Automatic Barcode Gap Discovery to identify putative species; this species delimitation method recognized six species. A subsample was sequenced for a nuclear gene (ITS1, 5·8S, ITS2), and a concatenated phylogenetic analysis was performed through Bayesian inference. The species delimitation of Middle-American Clinostomum was finally validated using a multispecies coalescent analysis (species tree). In total, five putative species are recognized among our samples. Mapping the second intermediate hosts (fish) onto the species tree suggests that metacercariae of these five species exhibit some level of host specificity towards their fish intermediate host (at the family level), irrespective of geographical distribution.

scholarly journals Survey of canine tick-borne diseases in Lábrea, Brazilian Amazon: ‘accidental’ findings of Dirofilaria immitis infection

2014 ◽  
Vol 23 (4) ◽  
pp. 473-480 ◽  
Author(s):  
Herbert Sousa Soares ◽  
Luis Marcelo Aranha Camargo ◽  
Solange Maria Gennari ◽  
Marcelo Bahia Labruna
Keyword(s):  
Dna Sequences ◽  
Rural Areas ◽  
Dirofilaria Immitis ◽  
Immunofluorescence Assay ◽  
Serum Samples ◽  
Rickettsia Species ◽  
Filarial Nematodes ◽  
Pcr Products ◽  
Pcr Assays ◽  
Urban And Rural Areas

Blood samples were collected from 99 domestic dogs from the urban and rural areas of the Lábrea municipality, state of Amazonas, Brazil. Canine serum samples were tested by immunofluorescence assay against Rickettsia spp., which revealed that only 3.0% (1/33) and 7.6% (5/66) of the dogs from urban and rural areas, respectively, reacted positively to at least one Rickettsia species. DNA was extracted from canine blood and tested by a battery of PCR assays targeting protozoa of the genera Babesia and Hepatozoon, and bacteria of the genera Rickettsia and Ehrlichia and family Anaplasmataceae. All samples were negative in the PCR assays targeting the genera Babesia, Hepatozoon, Ehrlichia and Rickettsia. For Anaplasmataceae, 3% (1/33) and 39.4% (26/66) of the urban and rural dogs, respectively, yielded amplicons that generated DNA sequences 100% identical to the corresponding sequence of Wolbachia endosymbiont of Dirofilaria immitis. Because of these results, all canine DNA samples were further tested in a PCR assay targeting filarial nematodes, which was positive for 18.2% (6/33) and 57.6% (38/66) urban and rural dogs, respectively. Filarial-PCR products generated DNA sequences 100% identical to D. immitis. While tick-borne infections were rare in Lábrea, D. immitis infection rates were among the highest reported in South America.

scholarly journals KAJIAN VARIASI SEKUNES INTRASPESIES DAN FILOGENETIK MONYET HITAM SULAWESI (Macaca nigra) DENGAN MENGGUNAKAN GEN COI

2017 ◽  
Vol 17 (1) ◽  
pp. 59
Author(s):  
Fitri Elisabeth Br. Hasibuan ◽  
Feky R Mantiri ◽  
Rooije R.H Rumende
Keyword(s):  
Phylogenetic Analysis ◽  
Genetic Distance ◽  
Cytochrome Oxidase ◽  
Intraspecific Variation ◽  
Dna Sequences ◽  
Sequence Variation ◽  
Cytochrome Oxidase I ◽  
Coi Gene ◽  
Forest Conversion ◽  
Macaca Nigra

KAJIAN VARIASI SEKUNES INTRASPESIES DAN FILOGENETIK MONYET HITAM SULAWESI (Macaca nigra) DENGAN MENGGUNAKAN GEN COI ABSTRAKMacaca nigra merupakan salah satu spesies yang endemik dan terancam punah di Sulawesi Utara. Eksploitasi yang berlebihan serta alih fungsi hutan menjadi ancaman bagi spesies ini di alam. Penelitian ini dilakukan untuk mengetahui variasi sekuens intraspesies M. nigra yang berada di Pusat Penyelamatan Satwa Tasikoki Bitung. Analisis sekuens menunjukkan terdapat perbedaan sepuluh pasang basa nukleotida pada urutan sekuens sampel dilokasi yang berbeda. Jarak genetik antara kedua sampel yaitu 0.016. Hasil perhitungan jarak genetik menunjukkan variasi genetik masih berada dalam kisaran variasi intraspesies dengan ambang batas untuk variasi intraspesies yaitu 0.015-0.025. Selain itu, variasi juga ditunjukkan pada sampel dengan kerabat dekatnya yang terdata di GenBank disebabkan karena adanya mutasi sinonim dan mutasi nonsinonim. Analisis filogenetik berdasarkan gen COI (Cytochrome Oxidase-I) menunjukkan bahwa sampel M. nigra yang digunakan dalam penelitian ini berada satu klaster dengan M. nigra yang ada di database dan termasuk ke dalam kelompok Silenus.Kata kunci: Variasi sekuens intraspesies, Gen COI, Macaca nigra, analisis filogenetik. THE STUDY INTRASPECIFIC VARIATION SEQUENCES AND PHYLOGENETIC CELEBES BLACK MACAQUE (Macaca nigra) USING COI GENE ABSTRACTMacaca nigra is listed as one of the endemic species and endangered in North Sulawesi. Exploitation and forest conversion have become threats to this species in the wild. This study was conducted to determine the intraspecific sequence variation of M. nigra located in Tasikoki Wildlife Rescue Center, Bitung. Sequence analysis revealed ten nucleotides differences between these two specimens. Genetic distance for both of specimens is 0.016. The result of genetic distance, the genetic variation between the specimens of M. nigra was still within the range of intraspecific variation. Distance analysis was also conducted by comparing with the close relatives of M. nigra based on BLAST search, which showed range from 0.015-0.025. These differences resulted in both synonymous and nonsynonymous mutation. Phylogenetic analysis using DNA sequences of COI (Cytochrome Oxidase-I) gene revealed that the two specimens of M. nigra claster together with M. nigra sequences that have been deposited in GeneBank. Moreover M. nigra is claster in the silenus group which is in accordance with previous reports.Keywords: Intraspecific Sequence Variation, COI Gene, Macaca nigra, Phylogenetic analysis.

scholarly journals Molecular Detection of Novel Borrelia Species, Candidatus Borrelia javanense, in Amblyomma javanense Ticks from Pangolins

Pathogens ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 728
Author(s):  
Bao-Gui Jiang ◽  
Ai-Qiong Wu ◽  
Jia-Fu Jiang ◽  
Ting-Ting Yuan ◽  
Qiang Xu ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
Molecular Detection ◽  
Southern China ◽  
Natural Circulation ◽  
Rrna Gene ◽  
The Novel ◽  
Flagellin Gene ◽  
Manis Javanica ◽  
The 16S Rrna Gene ◽  
Novel Agent

A novel Borrelia species, Candidatus Borrelia javanense, was found in ectoparasite ticks, Amblyomma javanense, from Manis javanica pangolins seized in anti-smuggling operations in southern China. Overall, 12 tick samples in 227 (overall prevalence 5.3%) were positive for Candidatus B. javanense, 9 (5.1%) in 176 males, and 3 (5.9%) in 51 females. The phylogenetic analysis, based on the 16S rRNA gene and the flagellin gene sequences of the Borrelia sp., exhibited strong evidence that Candidatus B. javanense did not belong to the Lyme disease Borrelia group and the relapsing fever Borrelia group but another lineage of Borrelia. The discovery of the novel Borrelia species suggests that A. javanense may be the transmit vector, and the M. javanica pangolins should be considered a possible origin reservoir in the natural circulation of these new pathogens. To our knowledge, this is the first identification of a novel Borrelia species agent in A. javanense from pangolins. Whether the novel agent is pathogenic to humans is unknown and needs further research.

scholarly journals Morphological and Phylogenetic Analysis of Eustrongylides sp. and Gnathostoma spinigerum Parasitizing the Asian Swamp Eel Monopterusalbus in China

Pathogens ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 711
Author(s):  
Sixin Zhang ◽  
Guangping Huang ◽  
Liang Li ◽  
Xianyong Liu ◽  
Xiaoli Tang ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
Coi Gene ◽  
Molecular Characteristics ◽  
Mean Intensity ◽  
Gnathostoma Spinigerum ◽  
Zoonotic Parasite ◽  
Third Stage ◽  
Parasite Infections ◽  
Asian Swamp Eel ◽  
Swamp Eel

Nematode infections transmitted to humans by the consumption of wild or cultured eels are increasingly being reported. In the present study, 120 Asian swamp eel, Monopterus albus (Zuiew), individuals collected from China were examined for parasite infections, and 78 larval nematodes were isolated. Morphological and molecular characteristics, including sequence and phylogenetic analysis of the internal transcribed spacer (ITS) and cytochrome c oxidase subunit I (COI) gene regions, were employed to identify these nematodes at the lowest taxonomic level possible. Asian swamp eel was infected with two zoonotic parasite taxa: Gnathostoma spinigerum advanced third-stage larvae, with 6.67% prevalence and mean intensity = 1.25, and Eustrongylides sp. fourth-stage larvae, with 26.67% prevalence and mean intensity = 2.13. These findings evidence the need to enhance public hygiene and food safety awareness toward eel consumption

scholarly journals Case of Human Infestation with Dermanyssus gallinae (Poultry Red Mite) from Swallows (Hirundinidae)

Pathogens ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 299
Author(s):  
Georgios Sioutas ◽  
Styliani Minoudi ◽  
Katerina Tiligada ◽  
Caterina Chliva ◽  
Alexandros Triantafyllidis ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
Cytochrome C ◽  
Cytochrome C Oxidase ◽  
Clinical Symptoms ◽  
Skin Lesions ◽  
Coi Gene ◽  
Dermanyssus Gallinae ◽  
Poultry Red Mite ◽  
Human Form ◽  
Bayesian Phylogenetic Analysis

Dermanyssus gallinae (the poultry red mite, PRM) is an important ectoparasite in the laying hen industry. PRM can also infest humans, causing gamasoidosis, which is manifested as skin lesions characterized by rash and itching. Recently, there has been an increase in the reported number of human infestation cases with D. gallinae, mostly associated with the proliferation of pigeons in cities where they build their nests. The human form of the disease has not been linked to swallows (Hirundinidae) before. In this report, we describe an incident of human gamasoidosis linked to a nest of swallows built on the window ledge of an apartment in the island of Kefalonia, Greece. Mites were identified as D. gallinae using morphological keys and amplifying the Cytochrome C oxidase subunit I (COI) gene by PCR. Bayesian phylogenetic analysis and median-joining network supported the identification of three PRM haplogroups and the haplotype isolated from swallows was identical to three PRM sequences isolated from hens in Portugal. The patient was treated with topical corticosteroids, while the house was sprayed with deltamethrin. After one week, the mites disappeared and clinical symptoms subsided. The current study is the first report of human gamasoidosis from PRM found in swallows’ nest.

Phylogenetic Analysis of Trichaptum Based on Nuclear 18S, 5.8S and ITS Ribosomal DNA Sequences

Mycologia ◽  
1997 ◽  
Vol 89 (5) ◽  
pp. 727 ◽  
Author(s):  
Kwan S. Ko ◽  
Soon G. Hong ◽  
Hack S. Jung
Keyword(s):  
Phylogenetic Analysis ◽  
Ribosomal Dna ◽  
Dna Sequences
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