• Proceedings of the Korean Society of Applied Pharmacology
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• 1995.10a
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• pp.125-132
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• 1995

In neurons, nitric oxide(NO) is produced by neuronal nitric oxide synthase following stimulation of N-methyl-D-aspartate(NMDA) receptors and the subsequent influx of Ca$\^$2+/. NO, induced in this manner, reportedly plays critical roles in neuronal plasticity, including neurite outgrowth, synaptic transmission, and long-term potentiation(LTP) (1-7). However, excessive activation of NMDA receptors has also been shown to be associated with various neurological disorders, including focal ischemia, epilepsy, trauma, neuropathic pain and chronic neurodegenerative maladies, such as Parkinson's disease, Hungtington's disease and amyotrophic lateral sclerosis(8). The paradox that nitric oxide(NO) has both neuroprotective and neurodestructive effects may be explained, at least in part, by the finding that NO effects on neurons are dependent on the redox state. This claim may be supported by the recent finding that tissue concentrations of cysteine approach 700 ${\mu}$M in settings of cerebral ischemia (9), levels of thiol that is expected to influence both the redox state of the system and the NO group itself(10).

• Journal of Microbiology
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• v.43 no.2
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• pp.166-171
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• 2005

In order to determine the effects of sulfate concentration on the anaerobic dechlorination of polychlorinated biphenyls, sediments spiked with Aroclor 1242 were made into slurries using media which had various sulfate concentrations ranging from 3 to 23 mM. The time course of dechlorination clearly demonstrated that dechlorination was inhibited at high concentration of sulfate due to less dechlori-nation of meta-substituted congeners. When the dechlorination patterns were analyzed by the calculation of Euclidean distance, the dechlorination pathway in the 3 mM sulfate samples was found to be different from that observed in the 13 mM samples, although the extent of dechlorination in these two samples was similar. It is possible that the dechlorination in the high sulfate concentration samples is inhibited by the suppression of growth of methanogen, which have been shown to be meta-dechlorinating microorganisms.

• Korean Journal of Environmental Biology
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• v.38 no.1
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• pp.101-105
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• 2020

Ralfsia longicellularis is known as an endemic species in Far East Asia. In this study, we report R. longicellularis as a new record from Korea based on morphological and molecular analyses. Molecular analyses based on plastid-encoded rbcL gene sequences and morpho-anatomical studies were undertaken on Ralfsia species, a poorly studied genus from Korea. Ralfsia longicellularis is mainly characterized by a dark brown thallus; 770-1200 ㎛ thick, curved cells in the creeping and ascending parts of the filaments; basal layer and erect filament cells with a width-to-length ratio of 1 : 1.5 to 10; narrowshaped sporangia on-stalk cells at the base of the paraphyses; and mostly uniseriate plurilocular reproductive organs capped with 1-2 sterile cells. The R. longicellularis samples from Korea in this study were similar to ones collected from the type locality (Peter the Great Bay, Russia) in morphology. The rbcL analyses also revealed that our Korean R. longicellularis samples were placed in the same clade with Russian materials, within a Ralfsia clade but distinct from the congeners.

• Animal Systematics, Evolution and Diversity
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• v.7 no.1
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• pp.45-54
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• 1991

An anthessiid copepod ; Anthessius atrinae n.sp., is described based on the specimens recorved in the mantle cavity of Atrina pectinata (Linn) taken from Korean waters. This is distinguished from congeners by formula II, I, 5 on distal segment of exopod of the fourth leg, three terminal claws on distal segment of the second antenna , and the shape of caudal ramus.

• Animal Systematics, Evolution and Diversity
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• v.7 no.1
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• pp.39-44
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• 1991

A gobiid fish , Istigobius hoshinonis (Tanaka) is described from one specimen collected at Hanrim-p, Cheju-do , on August 2, 1986. This is the first definitive record of the species in Korean waters. This species is distinguish from its congeners by the combination of the following characters ; uppermost pectoral fin ray unbranched, 12 or more predorsal scales, 7-9transverse scales and no scales on cheek and operculum. Pidan-mang-dug' is proposed as Korean name of this species.

• Animal Systematics, Evolution and Diversity
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• v.31 no.1
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• pp.46-50
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• 2015

Two species of Phycitinae, Rabiria rufimaculella (Yamanaka, 1993) and Copamyntis martimella Kirpichnikova & Yamanaka, 2002, are reported for the first time from Korea. Rabiria rufimaculella can be recognized by having two reddish-yellow and short bands near the postmedial and antemedial line, and by the bifurcate gnathos and the cornutus which is formed by numerous thorn-shaped sclerites in male genitalia. Copamyntis martimella can be distinguished with the congeners by the uniformly distributed setae on the sacculus and the curved aedeagus in male genitalia and the peanut-shaped signum near the middle of the corpus bursae in female genitalia. The adults and genitalia of the species are redescribed and illustrated.

• Animal Systematics, Evolution and Diversity
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• v.32 no.2
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• pp.72-85
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• 2016

Two aorid amphipods, Aoroides ellipticus Ariyama, 2004 and A. semicurvatus Ariyama, 2004 from shallow waters of South Korea are reported here. Aoroides ellipticus has the characteristic setation of gnathopod 1 and the elliptical shape of basis on pereopod 7, while A. semicurvatus can be easily distinguished from congeners by combined characters of the curved propodus on gnathopod 2 and the absence of marginal spines on outer ramus of uropod 3 in mature males. This paper redescribed these two aorids and provided a key to Korean Aoroides species.

• Animal Systematics, Evolution and Diversity
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• v.32 no.2
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• pp.86-92
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• 2016

A new species of Telestacicola Humes and Stock, 1972 (Copepoda, Rhynchomolgidae) is described as an associate of basket stars (Ophiuroidea) from Korea. The new species Telestacicola turgipes closely resembles T. angoti Humes and Stock, 1973, but is differentiated from the latter species and other congeners by a characteristic exopod of female leg 5 in which the middle of inner margin is protruded, with an angular apex. Doridicola connexus Humes, 1986 and D. micropus Humes, 1973, both associated with a basket star, are transferred to the genus Telestacicola, while Telestacicola sertus Humes, 1978 associated with a hydroid is removed to the genus Pseudomacrochiron Reddiah, 1969 in the Macrochironidae. A key to seven species of Telestacicola is provided.

• Animal Systematics, Evolution and Diversity
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• v.29 no.2
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• pp.179-183
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• 2013

The perlid stonefly Brahmana flavomarginata Wu, originally described from China from the male adult, is described using reared male and female adults and nymphs from Vietnam. The male adult of B. flavomarginata is distinguished from its congeners by the blackish-brown body color and distinct head marking, hemitergal triangular chitin plates, and a median semicircular smooth subgenital plate (hammer) on the abdominal sternum IX. The female adult has a large and round subgenital plate which extends to the posterior margin of the abdominal sternum X. The nymph can be distinguished by the relatively small compound eyes and the body covered by many long stout setae and short golden brown hair-like setae. This species is known in southwestern China (Yunnan Province) and northern Vietnam (Lao Cai Province, Cao Bang Province).

• Animal Systematics, Evolution and Diversity
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• v.34 no.1
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• pp.50-59
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• 2018

Two Campylaspis species, C. amblyoda $Gam\hat{o}$, 1960 and C. reticulata $Gam\hat{o}$, 1960, are redescribed as new to Korean cumacean fauna. Campylaspis amblyoda is characterized by having a carapace with five or six pairs of pellucid spots on dorsal surface, a pair of projections near proximal portion of frontal lobe, and lacking sulcus on lateral portion. Campylaspis reticulata is easily distinguished from its congeners by having a pair of broad sulcus and several large reticulations on lateral portion of carapace. The collected Korean specimens were congruent with the original descriptions, except for several minor differences. Herein, we add two Campylaspis species to the Korean cumacean fauna. The female of C. reticulata is described for the first time. A key to the Korean Campylaspis species is also provided.