The effects of antibodies and complement in macrophage-mediated cytotoxicity on metacercariae of the lung fluke, Paragonimus westermani

1990 ◽  
Vol 28 (2) ◽  
pp. 91 ◽  
Author(s):  
D Y Min ◽  
M H Ahn ◽  
K M Kim ◽  
M H Leem ◽  
S Y Park
Keyword(s):  
Paragonimus Westermani ◽  
Lung Fluke

Respiratory Chain of the Lung Fluke Paragonimus westermani - Facultative Anaerobic Mitochondria

1994 ◽  
Vol 312 (1) ◽  
pp. 142-150 ◽  
Author(s):  
S. Takamiya ◽  
H. Wang ◽  
A. Hiraishi ◽  
Y. Yu ◽  
F. Hamajima ◽  
...  
Keyword(s):  
Respiratory Chain ◽  
Paragonimus Westermani ◽  
Facultative Anaerobic ◽  
Lung Fluke

scholarly journals Molecular phylogeographic studies on Paragonimus westermani in Asia

2000 ◽  
Vol 74 (4) ◽  
pp. 315-322 ◽  
Author(s):  
M. Iwagami ◽  
L.Y. Ho ◽  
K. Su ◽  
P.F. Lai ◽  
M. Fukushima ◽  
...  
Keyword(s):  
East Asia ◽  
South Asia ◽  
Dna Sequences ◽  
Biological Properties ◽  
Ribosomal Gene ◽  
Paragonimus Westermani ◽  
North East ◽  
The Family ◽  
Lung Fluke ◽  
Second Internal Transcribed Spacer

AbstractThe lung fluke, Paragonimus westermani (Kerbert, 1878), is widely distributed in Asia, and exhibits much variation in its biological properties. Previous phylogenetic studies using DNA sequences have demonstrated that samples from north-east Asia form a tight group distinct from samples from south Asia (Philippines, Thailand, Malaysia). Among countries from the latter region, considerable molecular diversity was observed. This was investigated further using additional DNA sequences (partial mitochondrial cytochrome c oxidase subunit 1 (COI) and the second internal transcribed spacer of the nuclear ribosomal gene repeat (ITS2)) from additional samples of P. westermani. Phylogenies inferred from these again found three or four groups within P. westermani, depending on the method of analysis. Populations of P. westermani from north-east Asia use snail hosts of the family Pleuroceridae and differ in other biological properties from populations in south Asia (that use snail hosts of the family Thiaridae). It is considered that the populations we sampled can be divided into two species, one in north-east Asia and the other in south Asia.

scholarly journals Geographical genetic structure within the human lung fluke, Paragonimus westermani, detected from DNA sequences

Parasitology ◽  
1997 ◽  
Vol 115 (4) ◽  
pp. 411-417 ◽  
Author(s):  
D. BLAIR ◽  
T. AGATSUMA ◽  
T. WATANOBE ◽  
M. OKAMOTO ◽  
A. ITO
Keyword(s):  
Dna Sequences ◽  
Distinct Species ◽  
Genetic Distances ◽  
The Philippines ◽  
Peninsular Malaysia ◽  
Ribosomal Gene ◽  
Paragonimus Westermani ◽  
Lung Fluke ◽  
Coi Sequences ◽  
Second Internal Transcribed Spacer

Nucleotide sequences were obtained for the second internal transcribed spacer of the ribosomal gene repeat and for part of the mitochondrial cytochrome c oxidase subunit I gene from geographical isolates of Paragonimus westermani from Japan, China, Korea, Taiwan, the Philippines, peninsular Malaysia and Thailand. Sequences were obtained from several other species of Paragonimus for comparative purposes. Two groups were recognized within P. westermani: an NE group (China, Japan, Korea, Taiwan) which was relatively uniform and included both diploid and triploid forms, and a southern group (Malaysia, Thailand, Philippines), members of which were genetically distant from one another. According to both ITS2 and COI data, genetic distances among P. westermani isolates equalled or exceeded those between some distinct species of Paragonimus. The ITS2 sequences were conserved relative to COI sequences. Substitutions among the latter may be approaching saturation within the genus Paragonimus.

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