Search results for: Heum Gi Park

Items from 1 to 20 out of 46 results

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Genome-wide identification and expression of eight fatty acid desaturase genes, and the fatty acid profile, in the marine rotifer Brachionus koreanus fed the alga Tetraselmis suecica

Min-Chul Lee, Atsushi Hagiwara, Heum Gi Park, Jae-Seong Lee

Fisheries Science > 2019 > 85 > 2 > 397-406

Fatty acid desaturases catalyze the formation of a C=C double bond from a C–C single bond in fatty acids, leading to diversification of the fatty acid pool. In this study, we identified the fatty acid desaturase genes in the monogonont marine rotifer Brachionus koreanus, measured the messenger RNA (mRNA) expression, and quantified fatty acid composition under feeding with the alga Tetraselmis suecica...

article

The genome of the freshwater monogonont rotifer Brachionus calyciflorus

Hui‐Su Kim, Bo‐Young Lee, Jeonghoon Han, Chang‐Bum Jeong, more

Molecular Ecology Resources > 18 > 3 > 646 - 655

Monogononta is the most speciose class of rotifers, with more than 2,000 species. The monogonont genus Brachionus is widely distributed at a global scale, and a few of its species are commonly used as ecological and evolutionary models to address questions related to aquatic ecology, cryptic speciation, evolutionary ecology, the evolution of sex and ecotoxicology. With the importance of Brachionus...

article

Interrelationship of salinity shift with oxidative stress and lipid metabolism in the monogonont rotifer Brachionus koreanus

Min-Chul Lee, Jun Chul Park, Duck-Hyun Kim, Sujin Kang, more

Comparative Biochemistry and Physiology Part A: Molecular & Integrative... > 2017 > 214 > C > 79-84

Salinity is a critical key abiotic factor affecting biological processes such as lipid metabolism, yet the relationship between salinity and lipid metabolism has not been studied in the rotifer. To understand the effects of salinity on the monogonont rotifer B. koreanus, we examined high saline (25 and 35psu) conditions compared to the control (15psu). In vivo life cycle parameters (e.g. cumulative...

article

Effects of temperature on growth and fatty acid synthesis in the cyclopoid copepod Paracyclopina nana

Seung-Hwi Lee, Min-Chul Lee, Jayesh Puthumana, Jun Chul Park, more

Fisheries Science > 2017 > 83 > 5 > 725-734

We have used the cyclopoid copepod Paracyclopina nana to understand responses to the temperature shift. To determine the changes of molecular mechanisms, which would lead to physiological changes in P. nana, we investigated mRNA expression involved in lipogenesis, the area of lipid droplets, the ratio of fatty acids, and life parameters (growth and fecundity) in response to temperature changes (15,...

article

Effects of salinity on growth, fatty acid synthesis, and expression of stress response genes in the cyclopoid copepod Paracyclopina nana

Seung-Hwi Lee, Min-Chul Lee, Jayesh Puthumana, Jun Chul Park, more

Aquaculture > 2017 > 470 > C > 182-189

In marine ecosystems, salinity fluctuations are critical in modulating energy balance, inducing stress proteins, providing reproductive success and affecting the distribution of copepods. Salinity induces osmotic stress in organisms when they are not in their optimal condition and the stressful status increase the energy demand required for osmoregulation, which in turn reflects in all biological...

article

Effects of Dietary Inclusion of Chlorella vulgaris on Growth, Blood Biochemical Parameters, and Antioxidant Enzyme Activity in Olive Flounder, Paralichthys olivaceus

Samad Rahimnejad, Sang‐Min Lee, Heum‐Gi Park, Jin Choi

Journal of the World Aquaculture Society > 48 > 1 > 103 - 112

This study was carried out to investigate the effects of dietary inclusion of defatted Chlorella on growth performance, body composition, blood biochemistry, and antioxidant enzyme activity in olive flounder. Four isonitrogenous (51% crude protein) diets were formulated to contain 0 (control), 5, 10, or 15% Chlorella meal (CM) (designated as Con, CM5, CM10, and CM15, respectively) and fed to triplicate...

article

BDE-47 induces oxidative stress, activates MAPK signaling pathway, and elevates de novo lipogenesis in the copepod Paracyclopina nana

Min-Chul Lee, Jayesh Puthumana, Seung-Hwi Lee, Hye-Min Kang, more

Aquatic Toxicology > 2016 > 181 > C > 104-112

Brominated flame retardant, 2, 2′, 4, 4′-tetrabromodiphenyl ether (BDE-47), has received grave concerns as a persistent organic pollutant, which is toxic to marine organisms, and a suspected link to endocrine abnormalities. Despite the wide distribution in the marine ecosystem, very little is known about the toxic impairments on marine organisms, particularly on invertebrates. Thus, we examined the...

article

Potential of the small cyclopoid copepod Paracyclopina nana as an invertebrate model for ecotoxicity testing

Hans-Uwe Dahms, Eun-Ji Won, Hui-Su Kim, Jeonghoon Han, more

Aquatic Toxicology > 2016 > 180 > C > 282-294

Aquatic invertebrates contribute significantly to environmental impact assessment of contaminants in aquatic ecosystems. Much effort has been made to identify viable and ecologically relevant invertebrate test organisms to meet rigorous regulatory requirements. Copepods, which are ecologically important and widely distributed in aquatic organisms, offer a huge opportunity as test organisms for aquatic...

article

Effects of dietary inclusion of Chlorella vulgaris on growth, blood biochemical parameters and antioxidant enzymes activity in olive flounder, Paralichthys olivaceus

Samad Rahimnejad, Heum-Gi Park, Sang-Min Lee

Fish & Shellfish Immunology > 2016 > 53 > C > 106

article

Identification and molecular characterization of nitric oxide synthase (NOS) gene in the intertidal copepod Tigriopus japonicus

Chang-Bum Jeong, Hye-Min Kang, Jung Soo Seo, Heum Gi Park, more

Gene > 2016 > 577 > 1 > 47-54

In copepods, no information has been reported on the structure or molecular characterization of the nitric oxide synthase (NOS) gene. In the intertidal copepod Tigriopus japonicus, we identified a NOS gene that is involved in immune responses of vertebrates and invertebrates. In silico analyses revealed that nitric oxide (NO) synthase domains, such as the oxygenase and reductase domains, are highly...

article

Identification of xenobiotic biodegradation and metabolism-related genes in the copepod Tigriopus japonicus whole transcriptome analysis

Hui-Su Kim, Bo-Young Lee, Eun-Ji Won, Jeonghoon Han, more

Marine Genomics > 2015 > 24 > Part 3 > 207-208

In this study, the whole transcriptome of Tigriopus japonicus was sequenced using next generation sequencing technology. De novo assembly was performed using Trinity, which assembled 140,130 contigs. Transdecoder found 54,761 candidate coding contigs, 39,507 of which showed homology to other species covering 15,310 genes by BLAST analysis. Functional gene annotation was performed by Gene Ontology,...

article

Identification and molecular characterization of dorsal and dorsal-like genes in the cyclopoid copepod Paracyclopina nana

Chang-Bum Jeong, Min Chul Lee, Kyun-Woo Lee, Jung Soo Seo, more

Marine Genomics > 2015 > 24 > Part 3 > 319-327

To date, knowledge of the immune system in aquatic invertebrates has been reported in only a few model organisms, even though all metazoans have an innate immune system. In particular, information on the copepod's immunity and the potential role of key genes in the innate immune systems is still unclear. In this study, we identified dorsal and dorsal-like genes in the cyclopoid copepod Paracyclopina...

article

Genome-wide identification and transcript profile of the whole cathepsin superfamily in the intertidal copepod Tigriopus japonicus

Chang-Bum Jeong, Bo-Mi Kim, Hyeon-Jeong Choi, Inseon Baek, more

Developmental & Comparative Immunology > 2015 > 53 > 1 > 1-12

Modulation of expression of cathepsins in innate immune response has previously been reported in mollusks and large crustaceans including crabs, lobsters, and shrimps in response to immune challenges. However, similar responses in copepods and the related cathepsin members remain under-investigated. To understand molecular and innate immune responses in the intertidal copepod Tigriopus japonicus,...

article

RNA-seq based whole transcriptome analysis of the cyclopoid copepod Paracyclopina nana focusing on xenobiotics metabolism

Bo-Young Lee, Hui-Su Kim, Beom-Soon Choi, Dae-Sik Hwang, more

Comparative Biochemistry and Physiology - Part D: Genomics and Proteomics > 2015 > 15 > Complete > 12-19

Copepods are among the most abundant taxa in marine invertebrates, and cyclopoid copepods include more than 1500 species and subspecies. In marine ecosystems, planktonic copepods play a significant role as food resources in the food web and sensitively respond to environmental changes. The copepod Paracylopina nana is one of the planktonic brackish water copepods and considered as a promising model...

article

In vivo effects of UV radiation on multiple endpoints and expression profiles of DNA repair and heat shock protein (Hsp) genes in the cycloid copepod Paracyclopina nana

Eun-Ji Won, Jeonghoon Han, Yeonjung Lee, K. Suresh Kumar, more

Aquatic Toxicology > 2015 > 165 > Complete > 1-8

To evaluate the effects of ultraviolet (UV) radiation on energy acquisition and consumption, the copepod Paracyclopina nana was irradiated with several doses (0–3kJ/m²) of UV. After UV radiation, we measured the re-brooding success, growth pattern of newly hatched nauplii, ingestion rate, and assimilation of diet. In addition, we checked the modulated patterns of DNA repair and heat shock protein...

article

Whole transcriptome analysis of the monogonont rotifer Brachionus koreanus provides molecular resources for developing biomarkers of carbohydrate metabolism

Bo-Young Lee, Hui-Su Kim, Dae-Sik Hwang, Eun-Ji Won, more

Comparative Biochemistry and Physiology - Part D: Genomics and Proteomics > 2015 > 14 > Complete > 33-41

Rotifers (phylum Rotifera) are the most common non-arthropod animal. Species in the monogonont rotifer Brachionus are widely distributed in coastal areas and play an important role in aquatic food webs as secondary producers. Brachionus koreanus is currently being developed as a model system for ecotoxicological research. We sequenced the whole transcriptome of B. koreanus using RNA-seq technology...

article

Functional characterization of P-glycoprotein in the intertidal copepod Tigriopus japonicus and its potential role in remediating metal pollution

Chang-Bum Jeong, Bo-Mi Kim, Rae-Kwon Kim, Heum Gi Park, more

Aquatic Toxicology > 2014 > 156 > Complete > 135-147

The intertidal copepod Tigriopus japonicus has been widely used in aquatic toxicity testing for diverse environmental pollutants including metals. Despite relatively well-characterized in vivo physiological modulations in response to aquatic pollutants, the molecular mechanisms due to toxicity and detoxification are still unclear. To better understand the mechanisms of metal transport and further...

article

Effects of UV radiation on hatching, lipid peroxidation, and fatty acid composition in the copepod Paracyclopina nana

Eun-Ji Won, Yeonjung Lee, Jeonghoon Han, Un-Ki Hwang, more

Comparative Biochemistry and Physiology, Part C > 2014 > 165 > Complete > 60-66

To evaluate the effects of UV radiation on the reproductive physiology and macromolecules in marine zooplankton, several doses of UV radiation were used to treat the copepod Paracyclopina nana, and we analyzed in vivo endpoints of their life cycle such as mortality and reproductive parameters with in vitro biochemical biomarkers such as reactive oxygen species (ROS), the modulated enzyme activity...

article

Profiles of photosynthetic pigment accumulation and expression of photosynthesis-related genes in the marine cyanobacteria Synechococcus sp.: Effects of LED wavelengths

Na Na Kim, Hyun Suk Shin, Heum Gi Park, Jehee Lee, more

Biotechnology and Bioprocess Engineering > 2014 > 19 > 2 > 250-256

Light quality is a significant environmental factor that influences photosynthetic pigments in cyanobacteria. In the present study, we illuminated the marine cyanobacteria Synechococcus sp. with white (350 ∼ 700 nm), red (630 nm), green (530 nm), and blue (450 nm) light emitting diodes (LEDs) and measured pigment levels (chlorophyll, carotenoid, and phycobiliprotein) and expression of photosynthesis-related...

article

Effect of pharmaceuticals exposure on acetylcholinesterase (AchE) activity and on the expression of AchE gene in the monogonont rotifer, Brachionus koreanus

Jae-Sung Rhee, Bo-Mi Kim, Chang-Bum Jeong, Heum Gi Park, more

Comparative Biochemistry and Physiology, Part C > 2013 > 158 > 4 > 216-224

Pharmaceuticals are widely used in human and veterinary medicine. However, they are emerging as a significant contaminant in aquatic environments through wastewater. Due to the persistent and accumulated properties of pharmaceuticals via the food web, their potential harmful effects on aquatic animals are a great concern. In this study, we investigated the effects of six pharmaceuticals: acetaminophen,...

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Search results for: Heum Gi Park

Genome-wide identification and expression of eight fatty acid desaturase genes, and the fatty acid profile, in the marine rotifer Brachionus koreanus fed the alga Tetraselmis suecica

The genome of the freshwater monogonont rotifer Brachionus calyciflorus

Interrelationship of salinity shift with oxidative stress and lipid metabolism in the monogonont rotifer Brachionus koreanus

Effects of temperature on growth and fatty acid synthesis in the cyclopoid copepod Paracyclopina nana

Effects of salinity on growth, fatty acid synthesis, and expression of stress response genes in the cyclopoid copepod Paracyclopina nana

Effects of Dietary Inclusion of Chlorella vulgaris on Growth, Blood Biochemical Parameters, and Antioxidant Enzyme Activity in Olive Flounder, Paralichthys olivaceus

BDE-47 induces oxidative stress, activates MAPK signaling pathway, and elevates de novo lipogenesis in the copepod Paracyclopina nana

Potential of the small cyclopoid copepod Paracyclopina nana as an invertebrate model for ecotoxicity testing

Effects of dietary inclusion of Chlorella vulgaris on growth, blood biochemical parameters and antioxidant enzymes activity in olive flounder, Paralichthys olivaceus

Identification and molecular characterization of nitric oxide synthase (NOS) gene in the intertidal copepod Tigriopus japonicus

Identification of xenobiotic biodegradation and metabolism-related genes in the copepod Tigriopus japonicus whole transcriptome analysis

Identification and molecular characterization of dorsal and dorsal-like genes in the cyclopoid copepod Paracyclopina nana

Genome-wide identification and transcript profile of the whole cathepsin superfamily in the intertidal copepod Tigriopus japonicus

RNA-seq based whole transcriptome analysis of the cyclopoid copepod Paracyclopina nana focusing on xenobiotics metabolism

In vivo effects of UV radiation on multiple endpoints and expression profiles of DNA repair and heat shock protein (Hsp) genes in the cycloid copepod Paracyclopina nana

Whole transcriptome analysis of the monogonont rotifer Brachionus koreanus provides molecular resources for developing biomarkers of carbohydrate metabolism

Functional characterization of P-glycoprotein in the intertidal copepod Tigriopus japonicus and its potential role in remediating metal pollution

Effects of UV radiation on hatching, lipid peroxidation, and fatty acid composition in the copepod Paracyclopina nana

Profiles of photosynthetic pigment accumulation and expression of photosynthesis-related genes in the marine cyanobacteria Synechococcus sp.: Effects of LED wavelengths

Effect of pharmaceuticals exposure on acetylcholinesterase (AchE) activity and on the expression of AchE gene in the monogonont rotifer, Brachionus koreanus

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