• The Korean Journal of Physiology and Pharmacology
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• v.10 no.2
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• pp.65-69
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• 2006

The present study was undertaken to explore the role of autonomic nerves in the regulation of sodium transporters and water channels in the salivary gland. Rats were denervated of their sympathetic or parasympathetic nerves to the submandibular gland. One week later, the expression of Na,K-ATPase, epithelial sodium channels (ENaC), and aquaporins (AQP) was examined in the denervated and contralateral glands. The sympathetic denervation slightly but significantly decreased the expression of ${\alpha}1$ subunit of Na,K-ATPase, whereas the parasympathetic denervation increased it. The expression of ${\alpha}$-subunit of ENaC was significantly increased in both the denervated and contralateral glands either by the sympathetic or parasympathetic denervation. The sympathetic denervation significantly increased the expression of AQP5 in both the denervated and contralateral glands, whereas the parasympathetic denervation decreased it. It is suggested that the autonomic nerves have a tonic effect on the regulation of sodium transporters and AQP water channels in the salivary gland.

• BMB Reports
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• v.39 no.6
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• pp.696-702
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• 2006

Recently three proteins, playing central roles in the bidirectional transport of urate in renal proximal tubules, were identified: two members of the organic anion transporter (OAT) family, OAT1 and OAT3, and a protein that designated renal urate-anion exchanger (URAT1). Antibodies against these transporters are very important for investigating their expressions and functions. With the cytokine gene as a molecular adjuvant, genetic immunization-based antibody production offers several advantages including high specificity and high recognition to the native protein compared with current methods. We fused high antigenicity fragments of the three transporters to the plasmids pBQAP-TT containing T-cell epitopes and flanking regions from tetanus toxin, respectively. Gene gun immunization with these recombinant plasmids and two other adjuvant plasmids, which express granulocyte/macrophage colony-stimulating factor and FMS-like tyrosine kinase 3 ligand, induced high level immunoglobulin G antibodies, respectively. The native corresponding proteins of URAT1, OAT1 and OAT3, in human kidney can be recognized by their specific antibodies, respectively, with Western blot analysis and immunohistochemistry. Besides, URAT1 expression in Xenopus oocytes can also be recognized by its corresponding antibody with immuno-fluorescence. The successful production of the antibodies has provided an important tool for the study of UA transporters.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• v.31 no.1
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• pp.24-30
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• 2005

The flow of saliva is controlled entirely by nervous stimuli. The present study was aimed to explore the role of sympathetic and parasympathetic nerves in the regulation of sodium transporters and water channels in the salivary gland. Rats were denervated of their sympathetic and parasympathetic nerves to the submandibular gland, and the expression of sodium transporters and water channels was determined. The expression of either ${\alpha}-1$ or ${\beta}-1$ subunit of Na, K-ATPase was not significantly affected by the sympathetic denervation. On the contrary, the expression of both subunits was decreased by the parasympathetic denervation. The expression of ${\alpha}-,\;{\beta}-$, and ${\gamma}$-subunits of ENaC was not significantly affected by the sympathetic denervation, but was increased by the parasympathetic denervation. On the contrary, the expression of NHE3 was markedly decreased by both the sympathetic and the parasympathetic denervation. The sympathetic denervation significantly increased the expression of AQP1, while the parasympathetic denervation was without effect. The sympathetic and parasympathetic denervation significantly increased the expression of AQP4. The sympathetic denervation did not affect the expression of AQP5, but the parasympathetic denervation significantly decreased it. These results suggest that sympathetic and parasympathetic nerves have tonic effects on the regulation of sodium transporters and AQP water channels in the salivary gland. The sympathetic and parasympathetic denervation may then result in alterations of secretory rate and electrolyte composition of the saliva.

• Proceedings of the PSK Conference
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• 2004.10a
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• pp.83-85
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• 2004

• Proceedings of the Korean Magnestics Society Conference
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• 2012.11a
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• pp.78-78
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• 2012

• Proceedings of the PSK Conference
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• 2005.11a
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• pp.190-191
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• 2005

• The Korean Journal of Physiology
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• v.27 no.2
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• pp.123-138
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• 1993

The mechanism of insulin action to increase glucose transport is attributed to glucose transporter translocation from intracellular storage pools to the plasma membrane in insulin-sensitive cells. The present study was designed to visualize the redistribution of the glucose transporter by means of an immunogold labelling method. Our data clearly show that glucose transporter molecules were visible by this method. According to the method this distribution of glucose transporters between cell surface and intracellular pool was different in adipocytes. The glucose transporter molecules were randomly distributed at the cell surface whereas the molecules at LDM were farmed as clusters. By insulin treatment the number of homogeneous random particles increased at the cell surface whereas the cluster forms decreased at the intracellular storage pools. It suggests that the active molecules needed to be evenly distributed far effective function and that the inactive molecules in storage pools gathered and termed clusters until being transferred to the plasma membrane.

• International Commerce and Information Review
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• v.12 no.2
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• pp.385-405
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• 2010

The purpose of this study is to investigate liability risk of air cargo carrier and suggests ideas for solving problems which could be happen to air transporters on the future. because of Air transport remains one of the world's fastest growing and most important industries. And important treaties and contracts specifying transporters' responsibility regarding big scale aircraft accidents are such as Warsaw Convention in 1929, Hague Protocol in 1955, Montreal Convention in 1999. The Montreal Convention, formally the Convention for the Unification of Certain Rules for International Carriage, is a treaty adopted by Diplomatic meeting of ICAO member states in 1999. It amended important provisions of the Warsaw Convention's concerning compensation for the victims of air disasters. In conclusion, suggests to the method of air cargo security and cargo legal liability insurance which is for air cargo carrier's risk management.

• Proceedings of the Korean Society of Applied Pharmacology
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• 2004.11a
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• pp.50-61
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• 2004

Lead and cadmium are potent environmental toxicants that affect populations living in Europe, Americas, and Asia. Identifying transporters for lead and cadmium could potentially 1 help us better understand possible risk factors. The iron transporter divalent metal transporter 1(DMT1) mediates intestinal transport of cadmium, and lead in yeast and fibroblasts overexpressing DMT1. In human intestinal cells knocking down expression of DMT1 attenuated uptake of cadmium and iron but not lead. A possible explanation is the expression of a second transporter for lead in intestine. In astrocytes, however, DMT1 appears to transport lead in an extracellular buffer at pH value. At neutral pH, transport was not mediated by DMT1 but rather by a transporter that is stimulated by bicarbonate and inhibited by 4,4'-diisothiocyanatodihydrostilbene-2,2'-disulfonic acid. The identity of this lead transporter is under study.

• Research in Plant Disease
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• v.26 no.1
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• pp.1-7
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• 2020

The succinate dehydrogenase inhibitor (SDHI) is a class of fungicides, which is widely and rapidly used to manage fungal pathogens in the agriculture field. Currently, fungicide resistance to SDHIs has been developed in many different plant pathogenic fungi, causing diseases on crops, fruits, vegetables, and turf. Understanding the molecular mechanisms of fungicide resistance is important for effective prevention and resistance management strategies. Two different mechanisms have currently been known in SDHI resistance. The SDHI target genes, SdhB, SdhC, and SdhD, mutation(s) confer resistance to SDHIs. In addition, overexpression of ABC transporters is involved in reduced sensitivity to SDHI fungicides. In this review, the current status of SDHI resistance mechanisms in phytopathogenic fungi is discussed.