• 한국동물학회:학술대회논문집
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• 한국동물학회 1997년도 공동 춘계학술대회
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• pp.57.1-57
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• 1997

No Abstract, See Full Text

• 한국수산과학회지
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• 제37권5호
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• pp.414-422
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• 2004

To infer phylogenetic relationships among Epinephelus species inhabiting coastal regions of Korean peninsula, mitochondrial cytochrome b genes from 9 species belonging to the subfamily Epinephelinae were PCR-amplified, cloned and sequenced. Aligned cytochrome b sequences of 10 species containing one additional sequence from GenBank were 1,140 base pairs in length, including 439 variable and 330 parsimony informative sites. The cytochrome b genes of 10 species, as other vertebrates studied to date, exhibit unequal base compositions: an entirely low G content ($15.2{\pm}0.3{\%}$on average) and almost equal T, C and A contents ($29.3{\pm}0.8{\%},\;30.7{\pm}1.0{\%},\;and\;24.8{\pm}0.5{\%}$ on average, respectively).In third codon positions, transitional substitutions especially between Epinephelus species and outgroup species are almost certainly saturated or near saturation. Phylogenetic analyses were performed with sequence data from 8 Epinephelus species and 2 outgroup species (Cephalopholis urodela and Vaviola louti) by using distance-based (neighbor-joining and minimum evolution) and parsimony-based (maximum parsimony) methods. The results showed that the monophyly of the genus Epinephelus was supported by relatively high bootstrap values. However, phylogenetic relationships among E. areolatus, E. moara, E. septemfasciatus, and Epinephelus sp were poorly resolved. Within the genus Epinephelus, three resolved monophyletic groups were found: clade 1 included E. akaara and E. awoara;, clade 2 included E. fasciatus and E. merra; and clade 3 included E. akaara, E. awoara, E. fasciatus, E. merra, E. areolatus, E. moara, E. septemfasciatus and Epinephelus Sp.

• 한국축산식품학회지
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• 제33권6호
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• pp.696-700
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• 2013

A quick and reliable method for identifying meat origin is developed to ensure species origin of livestock products for consumers. The present study examined the identification of meat sources (duck, chicken, goat, deer, pig, cattle, sheep, and horse) using PCR by exploiting the mitochondrial 12S rRNA and mitochondrial cytochrome b genes. Species-specific primers were designed for some or all mitochondrial 12S rRNA nucleotide sequences to identify meat samples from duck, chicken, goat, and deer. Mitochondrial cytochrome b genes from pig, cattle, sheep, and horse were used to construct species-specific primers, which were used to amplify DNA from different meat samples. Primer sets developed in this study were found to be superior for detecting meat origin when compared to other available methods, for which the discrimination of meat origin was not equally applicable in some cases. Our new development of species-specific primer sets could be multiplexed in a single PCR reaction to significantly reduce the time and labor required for determining meat samples of unknown origin from the 8 species. Therefore, the technique developed in this study can be used efficiently to trace the meat origin in a commercial venture and help consumers to preserve their rights knowing origin of meat products for social, religious or health consciousness.

• Journal of Ecology and Environment
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• 제43권4호
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• pp.454-461
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• 2019

Background: Ikonnikov's whiskered bat (Myotis ikonnikovi) is found throughout the Korean Peninsula, as well as in Kazakhstan, Russia, Mongolia, China, and Japan. It is small-sized and primarily inhabits old-growth forests. The decrease and fragmentation of habitats due to increased human activity may influence the genetic structure of bat populations. This study was designed to elucidate the population genetic structure of M. ikonnikovi using mitochondrial genes (cytochrome oxidase I and cytochrome b). Results: The results showed that M. ikonnikovi populations from Korea have high genetic diversity. Although genetic differentiation was not detected for the COI gene, strong genetic differentiation of the Cytb gene between Mt. Jeombong and Mt. Jiri populations was observed. Moreover, the results indicated that the gene flow of the maternal lineage may be limited. Conclusions: This study is the first to identify the genetic population structure of M. ikonnikovi. We suggest that conservation of local populations is important for sustaining the genetic diversity of the bat, and comprehensive studies on factors causing habitat fragmentation are required.

• 한국어류학회지
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• 제21권4호
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• pp.291-298
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• 2009

한국, 중국, 일본, 대만 등 동아시아에 분포하는 피라미속 (Zacco) 어류에 대한 mitochondrial cytochrome b gene의 염기서열 분석을 통해 분자계통학적 유연관계를 조사하였다. MP tree 분석 결과, 한국산 참갈겨니와 갈겨니 집단은 모두 단계통군을 형성하고 있었으나 생물분포구계의 남한아 지역에 분포하는 참갈겨니와 갈겨니 집단은 일본산 갈겨니와 유전적으로 유사하게 분석되었다. 또한 한국산 피라미 집단은 일본산 피라미와 유전적 친화성을 보였으나, 중국산 피라미는 끄리와 분자계통학적 유연관계를 형성하였다. 참갈겨니의 한강집단은 동해 중북부에 서식하는 집단과 유전적으로 유사하였고, 갈겨니의 동진강과 영산강 집단은 유전적 동일 집단, 동진강과 섬진강 집단은 유전적 유사집단으로 여겨졌다. NJ tree 분석을 통해 피라미 집단은 참갈겨니와 갈겨니 및 Z. sieboldii 집단과는 오래전에 공동조상으로부터 분화되었고, Z. sieboldii의 조상으로부터 참갈겨니와 갈겨니가 분기진화한 것으로 추정되었다. 또한 중국에 서식하는 피라미는 한국산 피라미 집단과 상당한 유전적 차이를 보였을 뿐만 아니라 끄리속 어류와 분자계통수를 형성하고 있어 추후 동물지리학적 분포 및 피라미속 어류에 대한 계통분류학적 논의가 요구된다.

• Journal of Animal Science and Technology
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• 제54권4호
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• pp.241-246
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• 2012

한국재래염소의 계통유전학적 위치를 확인하기 위해서 한국재래염소 4개 집단 48두를 공시한 후 mitochondrial DNA (mtDNA) 내부의 cytochrome b 유전자의 전체서열을 분석하였다. 또한 이 서열들을 이용하여 한국재래염소의 유전적 다양성을 확인하였고, 다른 나라의 여러 염소품종들과의 계통유전학적 분석을 수행하였다. 한국재래염소 cytochrome b 유전자 서열을 토대로 3개의 염기변이가 동정되었으며, 그 중 2개는 아미노산 치환을 일으키는 missense 변이로 확인되었다. 또한 4개의 haplotype으로 분류되었는데, 이 중 3개는 중국 재래염소 품종에서도 나타났으나 다른 나라의 품종에서는 확인되지 않았다. 계통유전학적 분석 결과 모든 재래흑염소는 4개의 clade를 형성하였으나, 5개의 야생염소와는 독립적인 그룹을 형성하였다. 한국재래염소는 mtDNA D-loop에 분류되는 여러 모계혈통 중 모계혈통-A로 추정되는 clade 1에 포함되었다. 한국재래염소에서 보여진 각각의 haplotype은 중국 재래염소품종들과 상대적으로 가까운 유전적 유연관계를 보였다. 기존 연구결과와 본 연구의 분석결과를 종합해보면 과거에 일부 중국 재래 염소품종이 한반도로 유입되어 한국재래염소의 기원 및 가축화에 영향을 주었을 것으로 사료된다.

• The Korean Journal of Physiology and Pharmacology
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• 제10권4호
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• pp.207-212
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• 2006

Mitochondrial permeability transition has been shown to be involved in neuronal cell death. Mitochondrial monoamine oxidase (MAO)-B is considered to play a part in the progress of nigrostriatal cell death. The present study examined the effect of MAO inhibitors against the toxicity of 1-methyl-4-phenylpyridinium $(MPP^+)$ in relation to the mitochondrial permeability transition. Chlorgyline (a selective inhibitor of MAO-A), deprenyl (a selective inhibitor of MAO-B) and tranylcypromine (nonselective inhibitor of MAO) all prevented cell viability loss, cytochrome c release, caspase-3 activation, formation of reactive oxygen species and depletion of GSH in differentiated PC12 cells treated with $500\;{\mu}M$$MPP^+$. The MAO inhibitors at $10\;{\mu}M$ revealed a maximal inhibitory effect and beyond this concentration the inhibitory effect declined. On the basis of concentration, the inhibitory potency was tranylcypromine, deprenyl and chlorgyline order. The results suggest that chlorgyline, deprenyl and tranylcypromine attenuate the toxicity of $MPP^+$ against PC12 cells by suppressing the mitochondrial permeability transition that seems to be mediated by oxidative stress.

• 한국수산과학회지
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• 제37권5호
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• pp.405-413
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• 2004

The previous morphology-based taxonomic frameworks within the family Syngnathidae had emphasized the significance of the male brood pouch and reproductive biology in defining the group. However, several different hypotheses had been proposed by different investigators. This study has been carried out to determine the phylogenetic relationships among 19 species belonging to the order Syngnathiformes with three Gasterosteiformes species as outgroup taxa by using the mitochondrial cytochrome b DNA sequences. Phylogenetic analyses based on neighbor-joining distance, maximum parsimony, minimum evolution and maximum likelihood method strongly supported that the family Syngnathidae, the suborder Syngnathoidei and the order Syngnathiformes were all monophyletic group. Although much of previous morphological analyses were supported by our molecular data, there were some significant discrepancies between molecular and morphological work. Such an interesting result was that the weedy seadragon (Phyllopteryx taeniolatus) strongly grouped together with the New Zealand pot-belly seahorse (Hippocampus abdominalis). Considering the markedly different brooding structure between them, this unexpected result might be explained whether by multiple independent origins of brooding structure or by hybridization between the female Hippocampus and other syngnathid species having individual membranous egg compartment. In addition, the suborder Aulostomoidei was paraphyletic group because the shrimpfish (Aeliscus strigatus), belonging to the family Centriscidae, always grouped together with the family Syngnathidae as a sister taxon.

• 한국동물학회:학술대회논문집
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• 한국동물학회 2000년도 한국생물과학협회 학술발표대회
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• pp.116.1-116
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• 2000

No Abstract, See Full Text

• 한국동물학회:학술대회논문집
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• 한국동물학회 2000년도 한국생물과학협회 학술발표대회
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• pp.116.2-116
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• 2000

No Abstract, See Full Text