1
|
Awais M, Akter R, Boopathi V, Ahn JC, Lee JH, Mathiyalagan R, Kwak GY, Rauf M, Yang DC, Lee GS, Kim YJ, Jung SK. Discrimination of Dendropanax morbifera via HPLC fingerprinting and SNP analysis and its impact on obesity by modulating adipogenesis- and thermogenesis-related genes. Front Nutr 2023; 10:1168095. [PMID: 37621738 PMCID: PMC10446900 DOI: 10.3389/fnut.2023.1168095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Accepted: 06/28/2023] [Indexed: 08/26/2023] Open
Abstract
Dendropanax morbifera (DM), a medicinal plant, is rich in polyphenols and commonly used to treat cancer, inflammation, and thrombosis. However, to date, no study has been conducted on DM regarding the enormous drift of secondary metabolites of plants in different regions of the Republic of Korea and their effects on antiobesity, to explore compounds that play an important role in two major obesity-related pathways. Here, we present an in-depth study on DM samples collected from three regions of the Republic of Korea [Jeju Island (DMJ), Bogildo (DMB), and Jangheung (DMJG)]. We used high-performance liquid chromatography (HPLC) and multivariate component analyses to analyze polyphenol contents (neochlorogenic acid, chlorogenic acid, cryptochlorogenic acid, and rutin), followed by discrimination of the samples in DMJG using single nucleotide polymorphism and chemometric analysis. In silico and in vitro evaluation of major compounds found in the plant extract on two major anti-obesity pathways (adipogenesis and thermogenesis) was carried out. Furthermore, two extraction methods (Soxhlet and ultrasound-assisted extraction) were used to understand which method is better and why. Upon quantifying plant samples in three regions with the polyphenols, DMJG had the highest content of polyphenols. The internal transcribed region (ITS) revealed a specific gel-based band for the authentication of DMJG. PCA and PLS-DA revealed the polyphenol's discriminative power of the region DMJG. The anti-obesity effects of plant extracts from the three regions were related to their polyphenol contents, with DMJG showing the highest effect followed by DMJ and DMB. Ultrasound-assisted extraction yielded a high number of polyphenols compared to that of the Soxhlet method, which was supported by scanning electron microscopy. The present work encourages studies on plants rich in secondary metabolites to efficiently use them for dietary and therapeutic purposes.
Collapse
Affiliation(s)
- Muhammad Awais
- Graduate School of Biotechnology, College of Life Sciences, Kyung Hee University, Yongin si, Republic of Korea
| | - Reshmi Akter
- Graduate School of Biotechnology, College of Life Sciences, Kyung Hee University, Yongin si, Republic of Korea
| | - Vinothini Boopathi
- Graduate School of Biotechnology, College of Life Sciences, Kyung Hee University, Yongin si, Republic of Korea
| | - Jong Chan Ahn
- Graduate School of Biotechnology, College of Life Sciences, Kyung Hee University, Yongin si, Republic of Korea
| | - Jung Hyeok Lee
- Graduate School of Biotechnology, College of Life Sciences, Kyung Hee University, Yongin si, Republic of Korea
| | - Ramya Mathiyalagan
- Graduate School of Biotechnology, College of Life Sciences, Kyung Hee University, Yongin si, Republic of Korea
| | - Gi-Young Kwak
- Graduate School of Biotechnology, College of Life Sciences, Kyung Hee University, Yongin si, Republic of Korea
| | - Mamoona Rauf
- Department of Oriental Medicinal Biotechnology, College of Life Sciences, Kyung Hee University, Yongin-si, Republic of Korea
| | - Deok Chun Yang
- Graduate School of Biotechnology, College of Life Sciences, Kyung Hee University, Yongin si, Republic of Korea
- Department of Botany, Abdul Wali Khan University Mardan, Mardan, Pakistan
| | - Geun Sik Lee
- Southwest Coast Hwangchil Cooperative, Chonnam National University, Gwangju si, Republic of Korea
- Jungwon University Industry Academic Cooperation Building, Goesan-gun, Republic of Korea
| | - Yeon-Ju Kim
- Graduate School of Biotechnology, College of Life Sciences, Kyung Hee University, Yongin si, Republic of Korea
| | - Seok-Kyu Jung
- Department of Horticulture, Kongju National University, Yesan, Republic of Korea
| |
Collapse
|
2
|
Tran TNA, Son JS, Awais M, Ko JH, Yang DC, Jung SK. β-Glucosidase and Its Application in Bioconversion of Ginsenosides in Panax ginseng. Bioengineering (Basel) 2023; 10:bioengineering10040484. [PMID: 37106671 PMCID: PMC10136122 DOI: 10.3390/bioengineering10040484] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 04/13/2023] [Accepted: 04/15/2023] [Indexed: 04/29/2023] Open
Abstract
Ginsenosides are a group of bioactive compounds isolated from Panax ginseng. Conventional major ginsenosides have a long history of use in traditional medicine for both illness prevention and therapy. Bioconversion processes have the potential to create new and valuable products in pharmaceutical and biological activities, making them both critical for research and highly economic to implement. This has led to an increase in the number of studies that use major ginsenosides as a precursor to generate minor ones using β-glucosidase. Minor ginsenosides may also have useful properties but are difficult to isolate from raw ginseng because of their scarcity. Bioconversion processes have the potential to create novel minor ginsenosides from the more abundant major ginsenoside precursors in a cost-effective manner. While numerous bioconversion techniques have been developed, an increasing number of studies have reported that β-glucosidase can effectively and specifically generate minor ginsenosides. This paper summarizes the probable bioconversion mechanisms of two protopanaxadiol (PPD) and protopanaxatriol (PPT) types. Other high-efficiency and high-value bioconversion processes using complete proteins isolated from bacterial biomass or recombinant enzymes are also discussed in this article. This paper also discusses the various conversion and analysis methods and their potential applications. Overall, this paper offers theoretical and technical foundations for future studies that will be both scientifically and economically significant.
Collapse
Affiliation(s)
- Thi Ngoc Anh Tran
- Graduate School of Biotechnology, College of Life Science, Kyung Hee University, Yongin 17104, Republic of Korea
- Department of Plant & Environmental New Resources, Kyung Hee University, Yongin 17104, Republic of Korea
| | - Jin-Sung Son
- Graduate School of Biotechnology, College of Life Science, Kyung Hee University, Yongin 17104, Republic of Korea
| | - Muhammad Awais
- Graduate School of Biotechnology, College of Life Science, Kyung Hee University, Yongin 17104, Republic of Korea
| | - Jae-Heung Ko
- Department of Plant & Environmental New Resources, Kyung Hee University, Yongin 17104, Republic of Korea
| | - Deok Chun Yang
- Graduate School of Biotechnology, College of Life Science, Kyung Hee University, Yongin 17104, Republic of Korea
| | - Seok-Kyu Jung
- Department of Horticulture, Kongju National University, Yesan 32439, Republic of Korea
| |
Collapse
|
3
|
Sureshkumar S, Lee HC, Lee S, Jung SK, Kim D, Oh KB, Yang H, Jo YJ, Lee S, Byun SJ. Preliminary Study to Investigate the Effect of Lactobacillus Reuteri Administration on Growth Performance, Immunological, Gut Microbiome and Intestinal Mucosa of Chicken. Braz J Poult Sci 2022. [DOI: 10.1590/1806-9061-2022-1640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- S Sureshkumar
- National Institute of Animal Science, Republic of Korea; Dankook University, Republic of Korea
| | - HC Lee
- National Institute of Animal Science, Republic of Korea
| | - S Lee
- National Institute of Animal Science, Republic of Korea
| | - SK Jung
- National Institute of Animal Science, Republic of Korea
| | - D Kim
- Sungkyunkwan University, Republic of Korea
| | - KB Oh
- National Institute of Animal Science, Republic of Korea
| | - H Yang
- National Institute of Animal Science, Republic of Korea
| | - YJ Jo
- National Institute of Animal Science, Republic of Korea
| | - S Lee
- Sungkyunkwan University, Republic of Korea
| | - SJ Byun
- National Institute of Animal Science, Republic of Korea
| |
Collapse
|
4
|
Monmai C, Rod-in W, Jang AY, Lee SM, Jung SK, You S, Park WJ. Immune-enhancing effects of anionic macromolecules extracted from Codium fragile coupled with arachidonic acid in RAW264.7 cells. PLoS One 2020; 15:e0239422. [PMID: 33031432 PMCID: PMC7544070 DOI: 10.1371/journal.pone.0239422] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 09/07/2020] [Indexed: 11/19/2022] Open
Abstract
Arachidonic acid (ARA) is an integral constituent of the biological cell membrane, conferring it with fluidity and flexibility, which are necessary for the function of all cells, especially nervous system, skeletal muscle, and immune system. Codium species biosynthesize sulfated polysaccharides with very distinct structural features. Some of them have different biological activities with great potential in pharmaceutical applications. In this study, anionic macromolecules extracted from Codium fragile were investigated for their cooperative immune-enhancing activities with ARA. The cooperation between ARA and Codium resulted in increased, dose-dependent nitric oxide production and iNOS gene expression. In addition, co-treatment of ARA and Codium effectively increased pro-inflammatory cytokines (IL-1β, IL-6, and TNF-α), compared with Codium alone. We also demonstrated that the expression of COX-2 mRNA was also increased, which is responsible for the production of inflammatory mediator prostaglandins and their metabolites. Compared to the Codium group, the co-treatment of Codium with ARA enhanced the phosphorylation of nuclear factor-κB p-65, p38, and extracellular signal-related kinase 1/2, indicating that this combination stimulated immune response through nuclear factor-κB and mitogen-activated protein kinase pathways. These results indicated that the coordination of arachidonic acid with polysaccharide extracted from seaweed may be a potential source of immunomodulatory molecules.
Collapse
Affiliation(s)
- Chaiwat Monmai
- Department of Marine Food Science and Technology, Gangneung-Wonju National University, Gangneung, Gangwon, Republic of Korea
| | - Weerawan Rod-in
- Department of Marine Food Science and Technology, Gangneung-Wonju National University, Gangneung, Gangwon, Republic of Korea
| | - A-yeong Jang
- Department of Wellness-Bio Industry, Gangneung-Wonju National University, Gangneung, Gangwon, Republic of Korea
| | - Sang-min Lee
- Department of Marine Biotechnology, Gangneung-Wonju National University, Gangneung, Gangwon, Republic of Korea
| | - Seok-Kyu Jung
- Department of Horticulture, Daegu Catholic University, Gyeongsan, Gyeongbuk, Republic of Korea
| | - SangGuan You
- Department of Marine Food Science and Technology, Gangneung-Wonju National University, Gangneung, Gangwon, Republic of Korea
| | - Woo Jung Park
- Department of Marine Food Science and Technology, Gangneung-Wonju National University, Gangneung, Gangwon, Republic of Korea
- * E-mail:
| |
Collapse
|
5
|
Abid S, Kaliraj L, Arif MH, Hurh J, Ahn JC, Yang DC, Jung SK. Molecular and morphological discrimination of Chrysanthemum indicum using allele-specific PCR and T-shaped trichome. Mol Biol Rep 2020; 47:7699-7708. [PMID: 32974840 DOI: 10.1007/s11033-020-05844-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Accepted: 09/11/2020] [Indexed: 11/28/2022]
Abstract
Chrysanthemum indicum L. is a traditional oriental medicinal herb prepared as a tea from flowers that have been used in China and South Korea since ancient times. It has a long history in the treatment of hypertension, inflammation, and respiratory diseases. Among Chrysanthemum species, C. indicum has more active chemical components as well as better therapeutic effects, and C. indicum is mostly used for medicinal purposes in South Korea. However, the usage of C. indicum has become problematic over the years due to the abundance of adulterated Chrysanthemum and confusion with morphologically related species such as C. morifolium, C. boreale, and Aster spathulifolius. Thus, here we developed a method for molecular authentication using chloroplast universal region rpoC2 and morphological authentication based on T-shaped trichomes of the adaxial leaf surface. By using a species-specific primer derived from the rpoC2 region, we established a multiplex allele-specific PCR for the discrimination of C. indicum. Amplicons of 675 bp for C. indicum and 1026 bp for other Chrysanthemum species were produced using both rpoC2-specific and common primers. These primers can be used to analyze dried samples of Chrysanthemum. Morphological discrimination was performed using T-shaped trichomes present only on the adaxial leaf surface of C. indicum species, and then molecular markers were utilized to authenticate C. indicum products from adulterant samples available in the market. Our results indicate that these molecular markers in combination with morphological differentiation can serve as an effective tool for identifying C. indicum.
Collapse
Affiliation(s)
- Suleman Abid
- Graduate School of Biotechnology, College of Life Sciences, Kyung Hee University, Yongin si, Gyeonggi do, 17104, Republic of Korea
| | - Lalitha Kaliraj
- Graduate School of Biotechnology, College of Life Sciences, Kyung Hee University, Yongin si, Gyeonggi do, 17104, Republic of Korea
| | - Muhammad Huzaifa Arif
- Graduate School of Biotechnology, College of Life Sciences, Kyung Hee University, Yongin si, Gyeonggi do, 17104, Republic of Korea
| | - Joon Hurh
- Graduate School of Biotechnology, College of Life Sciences, Kyung Hee University, Yongin si, Gyeonggi do, 17104, Republic of Korea
| | - Jong Chan Ahn
- Graduate School of Biotechnology, College of Life Sciences, Kyung Hee University, Yongin si, Gyeonggi do, 17104, Republic of Korea
| | - Deok Chun Yang
- Graduate School of Biotechnology, College of Life Sciences, Kyung Hee University, Yongin si, Gyeonggi do, 17104, Republic of Korea. .,Department of Oriental Medicinal Biotechnology, College of Life Science, Kyung Hee University, Yongin si, Gyeonggi do, 17104, Republic of Korea.
| | - Seok-Kyu Jung
- Graduate School of Biotechnology, College of Life Sciences, Kyung Hee University, Yongin si, Gyeonggi do, 17104, Republic of Korea. .,Department of Oriental Medicinal Biotechnology, College of Life Science, Kyung Hee University, Yongin si, Gyeonggi do, 17104, Republic of Korea.
| |
Collapse
|
6
|
Rupa EJ, Arunkumar L, Han Y, Kang JP, Ahn JC, Jung SK, Kim M, Kim JY, Yang DC, Lee GJ. Dendropanax Morbifera Extract-Mediated ZnO Nanoparticles Loaded with Indole-3-Carbinol for Enhancement of Anticancer Efficacy in the A549 Human Lung Carcinoma Cell Line. Materials (Basel) 2020; 13:ma13143197. [PMID: 32709058 PMCID: PMC7412136 DOI: 10.3390/ma13143197] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 07/14/2020] [Accepted: 07/15/2020] [Indexed: 11/26/2022]
Abstract
Dendropanax morbifera is a versatile plant that has been used as a herbal medicine due to its various useful medicinal effects. To protect its active component from biological stress and increase its drug efficacy as well as drug bioavailability, nanoemulsion was prepared. Dendropanax morbifera zinc oxide nanoparticles (DM-ZnO NPs) were synthesized using the plant extract via the co-precipitation method and loaded with active indole-3-carbinol for nanoemulsion formulation using the ultrasonication process. Field emission transmission electron microscope revealed the flower shape of the Dendropanax morbifera indole-3-carbinol zinc oxide nanoemulsion (DM-ZnO-I3C-NE). In contrast, DM-ZnO NPs showed a spheroid shape that coincides agreeably with field emission electron scanning microscope. The hydrodynamic sizes by dynamic light scattering are about 65 ± 3 nm and 239.6 ± 6 nm and the crystallite sizes from X-ray diffraction are 11.52 nm and 16.07 nm for DM-ZnO NPs and DM-ZnO-I3C-NE, respectively. In vitro analysis revealed the cytotoxicity of DM-ZnO-I3C-NE against a human lung cancer cell line (A549) at 12.5 µg/mL as well as reactive oxygen species (ROS) production. The DM-ZnO-I3C-NE-induced ROS generation level was higher than that of DM-ZnO NPs and free indole-3-carbinol. The synergistic effect of DM-ZnO and indole-3-carbinol indicates DM-ZnO-I3C-NE as a potential candidate for future lung cancer drug and could be scope for functional food.
Collapse
Affiliation(s)
- Esrat Jahan Rupa
- Department of Oriental Medicinal Biotechnology, College of Life Science, Kyung Hee University, Yongin-si 17104, Gyeonggi-do, Korea; (E.J.R.); (L.A.); (Y.H.); (S.-K.J.)
| | - Lakshminarayanan Arunkumar
- Department of Oriental Medicinal Biotechnology, College of Life Science, Kyung Hee University, Yongin-si 17104, Gyeonggi-do, Korea; (E.J.R.); (L.A.); (Y.H.); (S.-K.J.)
| | - Yaxi Han
- Department of Oriental Medicinal Biotechnology, College of Life Science, Kyung Hee University, Yongin-si 17104, Gyeonggi-do, Korea; (E.J.R.); (L.A.); (Y.H.); (S.-K.J.)
| | - Jong Pyo Kang
- Department of Cardiovascular and Neurologic Diseases, College of Korean Medicine, Kyung Hee University, Seoul 100011, Korea; (J.P.K.); (J.C.A.); (M.K.)
| | - Jong Chan Ahn
- Department of Cardiovascular and Neurologic Diseases, College of Korean Medicine, Kyung Hee University, Seoul 100011, Korea; (J.P.K.); (J.C.A.); (M.K.)
| | - Seok-Kyu Jung
- Department of Oriental Medicinal Biotechnology, College of Life Science, Kyung Hee University, Yongin-si 17104, Gyeonggi-do, Korea; (E.J.R.); (L.A.); (Y.H.); (S.-K.J.)
| | - Mia Kim
- Department of Cardiovascular and Neurologic Diseases, College of Korean Medicine, Kyung Hee University, Seoul 100011, Korea; (J.P.K.); (J.C.A.); (M.K.)
| | - Jong Yun Kim
- Saerom Hanbang R&D Center, 76, Cheonseok-gil, Geumcheon-myeon, Naju-si 520010, Jeollanam-do, Korea;
| | - Deok-Chun Yang
- Department of Oriental Medicinal Biotechnology, College of Life Science, Kyung Hee University, Yongin-si 17104, Gyeonggi-do, Korea; (E.J.R.); (L.A.); (Y.H.); (S.-K.J.)
- Department of Cardiovascular and Neurologic Diseases, College of Korean Medicine, Kyung Hee University, Seoul 100011, Korea; (J.P.K.); (J.C.A.); (M.K.)
- Correspondence: (D.-C.Y.); (G.J.L.)
| | - Gyong Jai Lee
- SD Leo R&D Center, 9-16, Yeonmujang 5-gil, Seongdong-gu, Seoul 100011, Korea
- Correspondence: (D.-C.Y.); (G.J.L.)
| |
Collapse
|
7
|
Kim JE, Monmai C, Rod-in W, Jang AY, You SG, Lee SM, Jung SK, Park WJ. Co-immunomodulatory Activities of Anionic Macromolecules Extracted from Codium fragile with Red Ginseng Extract on Peritoneal Macrophage of Immune-Suppressed Mice. J Microbiol Biotechnol 2020; 30:352-358. [PMID: 31893613 PMCID: PMC9728336 DOI: 10.4014/jmb.1909.09062] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
In this study we investigated the immune effects of oral administration of anionic macromolecules extracted from Codium fragile (CFAM) and red ginseng extract mixture on the peritoneal macrophage cells in immune-suppressed mice. Cyclophosphamide (CY) induces the immune-suppressed condition. CY-treated mice were orally fed with different concentrations of CFAM supplemented with red ginseng extract and the peritoneal macrophages collected. CY treatment significantly decreased the immune activities of peritoneal macrophages, compared to the normal mice. The administration of CFAM mixed with red ginseng extract significantly boosted the viability of macrophage cells and nitric oxide production of peritoneal macrophages. Further, the oral administration of CFAM mixed with red ginseng extract up-regulated the expression of iNOS, COX-2, and TLR-4 as well as cytokines such as IL-1β, IL-6, TNF-α, and IFN-γ more than the red ginseng-treated group. This study showed that CFAM enhanced the immune activity of red ginseng extract in the peritoneal macrophage cells of immune-suppressed mice. Furthermore, CFAM might be used as a co-stimulant of red ginseng extract through the regulation of macrophage cells for the enhancement of human health and immunity.
Collapse
Affiliation(s)
- Ji Eun Kim
- Department of Wellness-Bio Industry, Gangneung-Wonju National University, Gangneung 25457, Republic of Korea
| | - Chaiwat Monmai
- Department of Marine Food Science and Technology, Gangneung-Wonju National University, Gangneung 5457, Republic of Korea
| | - Weerawan Rod-in
- Department of Marine Food Science and Technology, Gangneung-Wonju National University, Gangneung 5457, Republic of Korea
| | - A-yeong Jang
- Department of Wellness-Bio Industry, Gangneung-Wonju National University, Gangneung 25457, Republic of Korea,Department of Marine Food Science and Technology, Gangneung-Wonju National University, Gangneung 5457, Republic of Korea
| | - Sang-Guan You
- Department of Wellness-Bio Industry, Gangneung-Wonju National University, Gangneung 25457, Republic of Korea,Department of Marine Food Science and Technology, Gangneung-Wonju National University, Gangneung 5457, Republic of Korea
| | - Sang-min Lee
- Department of Wellness-Bio Industry, Gangneung-Wonju National University, Gangneung 25457, Republic of Korea,Department of Marine Biotechnology, Gangneung-Wonju National University, Gangneung 25457, Republic of Korea
| | - Seok-Kyu Jung
- Department of Horticulture, Daegu Catholic University, Gyeongsan 3830, Republic of Korea
| | - Woo Jung Park
- Department of Wellness-Bio Industry, Gangneung-Wonju National University, Gangneung 25457, Republic of Korea,Department of Marine Food Science and Technology, Gangneung-Wonju National University, Gangneung 5457, Republic of Korea,Corresponding author Phone: +82-33-640-2857 Fax: +82-33-640-2850 E-mail:
| |
Collapse
|
8
|
Mathiyalagan R, Wang C, Kim YJ, Castro-Aceituno V, Ahn S, Subramaniyam S, Simu SY, Jiménez-Pérez ZE, Yang DC, Jung SK. Preparation of Polyethylene Glycol-Ginsenoside Rh1 and Rh2 Conjugates and Their Efficacy against Lung Cancer and Inflammation. Molecules 2019; 24:E4367. [PMID: 31795352 PMCID: PMC6930446 DOI: 10.3390/molecules24234367] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 11/22/2019] [Accepted: 11/26/2019] [Indexed: 02/07/2023] Open
Abstract
Low solubility and tumor-targeted delivery of ginsenosides to avoid off-target cytotoxicity are challenges for clinical trials. In the present study, we report on a methodology for the synthesis of polyethylene glycol (PEG)-ginsenoside conjugates through a hydrolysable ester bond using the hydrophilic polymer polyethylene glycol with the hydrophobic ginsenosides Rh1 and Rh2 to enhance water solubility and passive targeted delivery. The resulting conjugates were characterized by 1H nuclear magnetic resonance (1H NMR) and Fourier-transform infrared spectroscopy (FT-IR). 1H NMR revealed that the C-6 and C-3 sugar hydroxyl groups of Rh1 and Rh2 were esterified. The conjugates showed spherical shapes that were monitored by field-emission transmission electron microscopy (FE-TEM), and the average sizes of the particles were 62 ± 5.72 nm and 134 ± 8.75 nm for PEG-Rh1and PEG-Rh2, respectively (measured using a particle size analyzer). Owing to the hydrophilic enhancing properties of PEG, PEG-Rh1 and PEG-Rh2 solubility was greatly enhanced compared to Rh1 and Rh2 alone. The release rates of Rh1 and Rh2 were increased in lower pH conditions (pH 5.0), that for pathophysiological sites as well as for intracellular endosomes and lysosomes, compared to normal-cell pH conditions (pH 7.4). In vitro cytotoxicity assays showed that the PEG-Rh1conjugates had greater anticancer activity in a human non-small cell lung cancer cell line (A549) compared to Rh1 alone, whereas PEG-Rh2 showed lower cytotoxicity in lung cancer cells. On the other hand, both PEG-Rh1 and PEG-Rh2 showed non-cytotoxicity in a nondiseased murine macrophage cell line (RAW 264.7) compared to free Rh1 and Rh2, but PEG-Rh2 exhibited increased efficacy against inflammation by greatly inhibiting nitric oxide production. Thus, the overall conclusion of our study is that PEG conjugation promotes the properties of Rh1 for anticancer and Rh2 for inflammation treatments. Depends on the disease models, they could be potential drug candidates for further studies.
Collapse
Affiliation(s)
- Ramya Mathiyalagan
- Graduate School of Biotechnology, College of Life Science, Kyung Hee University, Yongin-si, Gyeonggi-do 17104, Korea; (R.M.); (S.Y.S.); (Z.E.J.-P.)
| | - Chao Wang
- Department of Oriental Medicinal Biotechnology, College of Life Science, Kyung Hee University, Yongin-si, Gyeonggi-do 17104, Korea; (C.W.); (Y.J.K.); (V.C.-A.); (S.A.); (S.S.)
- Institute of Biomedical Research, School of Life Sciences, Shandong University of Technology, Zibo 255000, Shandong, China
| | - Yeon Ju Kim
- Department of Oriental Medicinal Biotechnology, College of Life Science, Kyung Hee University, Yongin-si, Gyeonggi-do 17104, Korea; (C.W.); (Y.J.K.); (V.C.-A.); (S.A.); (S.S.)
| | - Verónica Castro-Aceituno
- Department of Oriental Medicinal Biotechnology, College of Life Science, Kyung Hee University, Yongin-si, Gyeonggi-do 17104, Korea; (C.W.); (Y.J.K.); (V.C.-A.); (S.A.); (S.S.)
| | - Sungeun Ahn
- Department of Oriental Medicinal Biotechnology, College of Life Science, Kyung Hee University, Yongin-si, Gyeonggi-do 17104, Korea; (C.W.); (Y.J.K.); (V.C.-A.); (S.A.); (S.S.)
| | - Sathiyamoorthy Subramaniyam
- Department of Oriental Medicinal Biotechnology, College of Life Science, Kyung Hee University, Yongin-si, Gyeonggi-do 17104, Korea; (C.W.); (Y.J.K.); (V.C.-A.); (S.A.); (S.S.)
- Department of Biotechnology, Dr.N.G.P., Arts and Science College, Coimbatore 641048, Tamil Nadu, India
| | - Shakina Yesmin Simu
- Graduate School of Biotechnology, College of Life Science, Kyung Hee University, Yongin-si, Gyeonggi-do 17104, Korea; (R.M.); (S.Y.S.); (Z.E.J.-P.)
| | - Zuly Elizabeth Jiménez-Pérez
- Graduate School of Biotechnology, College of Life Science, Kyung Hee University, Yongin-si, Gyeonggi-do 17104, Korea; (R.M.); (S.Y.S.); (Z.E.J.-P.)
| | - Deok Chun Yang
- Graduate School of Biotechnology, College of Life Science, Kyung Hee University, Yongin-si, Gyeonggi-do 17104, Korea; (R.M.); (S.Y.S.); (Z.E.J.-P.)
- Department of Oriental Medicinal Biotechnology, College of Life Science, Kyung Hee University, Yongin-si, Gyeonggi-do 17104, Korea; (C.W.); (Y.J.K.); (V.C.-A.); (S.A.); (S.S.)
| | - Seok-Kyu Jung
- Department of Oriental Medicinal Biotechnology, College of Life Science, Kyung Hee University, Yongin-si, Gyeonggi-do 17104, Korea; (C.W.); (Y.J.K.); (V.C.-A.); (S.A.); (S.S.)
| |
Collapse
|
9
|
Choi H, Jung SK, Kim JS, Oh KB, Yang H, Lee G, Lee HC, Woo JS, Byun SJ. Chicken PRDX3 is required for proliferation of chicken embryo fibroblast cells. Br Poult Sci 2019; 61:22-25. [PMID: 31615265 DOI: 10.1080/00071668.2019.1680799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
1. This experiment investigated the influence of chicken PRDX3 on cell proliferation in chick embryo fibroblast cells using PRDX3 knockdown technology.2. A methyl thiazolyl tetrazolium (MTT) assay was performed to assess the effect of chPRDX3 knockdown on fibroblast proliferation. The antioxidant effect was investigated to determine if it directly mediated fibroblast cell proliferation.3. To determine the role of chPRDX3 on cell proliferation, an siRNA mediated knockdown was performed in chick fibroblast cells using an in vitro assay. The proliferation of fibroblast cells transfected with siPRDX3 #3 and siPRDX3 Mix was significantly decreased after 48 h (P < 0.01). In addition, the knockdown of chicken PRDX3 suppressed cell proliferation through an increase in oxidative stress.4. The results demonstrated that chPRDX3 is required for cell proliferation in chicken fibroblast cells. Such findings have important implications for the maintenance of chicken fibroblast cells.
Collapse
Affiliation(s)
- H Choi
- Animal Biotechnology Division, National Institute of Animal Science, RDA, Wanju-gun, Jeollabuk-do, Republic of Korea
| | - S K Jung
- Animal Biotechnology Division, National Institute of Animal Science, RDA, Wanju-gun, Jeollabuk-do, Republic of Korea
| | - J S Kim
- Animal Biotechnology Division, National Institute of Animal Science, RDA, Wanju-gun, Jeollabuk-do, Republic of Korea
| | - K B Oh
- Animal Biotechnology Division, National Institute of Animal Science, RDA, Wanju-gun, Jeollabuk-do, Republic of Korea
| | - H Yang
- Animal Biotechnology Division, National Institute of Animal Science, RDA, Wanju-gun, Jeollabuk-do, Republic of Korea
| | - G Lee
- Animal Biotechnology Division, National Institute of Animal Science, RDA, Wanju-gun, Jeollabuk-do, Republic of Korea
| | - H-C Lee
- Animal Biotechnology Division, National Institute of Animal Science, RDA, Wanju-gun, Jeollabuk-do, Republic of Korea
| | - J-S Woo
- Animal Biotechnology Division, National Institute of Animal Science, RDA, Wanju-gun, Jeollabuk-do, Republic of Korea
| | - S J Byun
- Animal Biotechnology Division, National Institute of Animal Science, RDA, Wanju-gun, Jeollabuk-do, Republic of Korea
| |
Collapse
|
10
|
Rod-In W, Monmai C, Lee SM, Jung SK, You S, Park WJ. Anti-Inflammatory Effects of Lipids Extracted from Arctoscopus japonicus Eggs on LPS-Stimulated RAW264.7 Cells. Mar Drugs 2019; 17:md17100580. [PMID: 31614594 PMCID: PMC6836062 DOI: 10.3390/md17100580] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2019] [Revised: 10/06/2019] [Accepted: 10/08/2019] [Indexed: 12/12/2022] Open
Abstract
Arctoscopus japonicus is a cold-water marine fish. The present study investigated the fatty acid composition of A. japonicus egg lipids and their anti-inflammatory effects on LPS-stimulated RAW246.7 macrophages. The results showed that A. japonicus egg lipids contained primarily polyunsaturated fatty acids (52.9% of the total fatty acid content; mostly eicosapentaenoic acid [EPA, 21.2 ± 0.5%] and docosahexaenoic acid [DHA, 25.9 ± 0.1%]), followed by monounsaturated fatty acids and saturated fatty acids (23.7% and 23.4%, respectively). A. japonicus egg lipids significantly decreased nitric oxide (NO) production and suppressed the expression of immune-associated genes such as iNOS, COX-2, IL-1β, IL-6, and TNF-α LPS-stimulated RAW246.7 macrophages in dose-dependent manner. A. japonicus egg lipids also reduced the phosphorylation levels of NF-κB p-65, p38, ERK1/2, and JNK, key components of the NF-κB and MAPK pathways, suggesting that the lipid-induced anti-inflammatory activity is related to these signaling pathways. These results indicate that the lipids extracted from A. japonicus eggs have potential biofunctions and might be useful for regulating inflammation in macrophages.
Collapse
Affiliation(s)
- Weerawan Rod-In
- Department of Marine Food Science and Technology, Gangneung-Wonju National University, Gangneung, Gangwon 25457, Korea.
| | - Chaiwat Monmai
- Department of Marine Food Science and Technology, Gangneung-Wonju National University, Gangneung, Gangwon 25457, Korea.
| | - Sang-Min Lee
- Department of Marine Biotechnology, Gangneung-Wonju National University, Gangneung, Gangwon 25457, Korea.
| | - Seok-Kyu Jung
- Department of Horticulture, Daegu Catholic University, Gyeongsan, Gyeongbuk 38430, Korea.
| | - SangGuan You
- Department of Marine Food Science and Technology, Gangneung-Wonju National University, Gangneung, Gangwon 25457, Korea.
| | - Woo Jung Park
- Department of Marine Food Science and Technology, Gangneung-Wonju National University, Gangneung, Gangwon 25457, Korea.
| |
Collapse
|
11
|
Choi H, Jung SK, Kim JS, Kim KW, Oh KB, Lee PY, Byun SJ. Effects of dietary recombinant chlorella supplementation on growth performance, meat quality, blood characteristics, excreta microflora, and nutrient digestibility in broilers. Poult Sci 2017; 96:710-716. [PMID: 27697932 DOI: 10.3382/ps/pew345] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Accepted: 08/11/2016] [Indexed: 11/20/2022] Open
Abstract
The use of chlorella as an immune stimulant to enhance nonspecific host defense mechanisms or as an antimicrobial to inhibit bacterial growth has been reported. Thus, the aim of the present study was to clarify the effect of recombinant chlorella supplementation on growth performance, meat quality, and the blood profile, excreta microflora, and nutrient digestibility in broilers. A total of 375 one-day-old ROSS 308 broilers (male and female) were allotted to 5 dietary treatments using 5 cages with 15 chicks per cage. Treatments were: 1) NC, basal diet supplemented with 1.0% E. coli fermented liquor (EFL); 2) PC1, 0.2% EFL with chlorella; 3) PC2, 1.0% EFL with chlorella; 4) T1, 0.2% EFL with chlorella (anti-viral); and 5) T2, 1.0% EFL with chlorella (anti-viral). The broilers in the T2 treatment groups showed higher body weight gain (BGW) by 2.55% (P < 0.01) and lower feed conversion ratio (FCR) by 2.75% (P < 0.05) compared with those fed the control NC treatment group. Moreover, the blood contents of blood urea nitrogen (BUN), creatinine, and IgA in the broilers of the T2 treatment group were significantly increased by 28.12, 23.07, and 29.72%, respectively -more than those found in the broilers of the NC treatment group (P < 0.01). In contrast, the LDL/C in the blood from the animals in the T2 treatment group was significantly decreased by 23.23% - more than that in the blood from the NC broilers (P < 0.05). Based on these results, we suggest that the dietary supplementation of broilers with recombinant chlorella could improve their growth performance, increase the concentration of IgA and apparently metabolizable nitrogen in the blood, and decrease ammonia emissions. Therefore, our findings have important implications for the effect of recombinant chlorella supplementation through increasing the concentration of IgA and the level of metabolizable nitrogen.
Collapse
|
12
|
Kim JE, Roh E, Lee MH, Yu DH, Kim DJ, Lim TG, Jung SK, Peng C, Cho YY, Dickinson S, Alberts D, Bowden GT, Einspahr J, Stratton SP, Curiel-Lewandrowski C, Bode AM, Lee KW, Dong Z. Fyn is a redox sensor involved in solar ultraviolet light-induced signal transduction in skin carcinogenesis. Oncogene 2015; 35:4091-101. [PMID: 26686094 PMCID: PMC4916055 DOI: 10.1038/onc.2015.471] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Revised: 09/15/2015] [Accepted: 11/10/2015] [Indexed: 12/21/2022]
Abstract
Solar ultraviolet (UV) light is a major etiological factor in skin carcinogenesis, with solar UV-stimulated signal transduction inducing pathological changes and skin damage. The primary sensor of solar UV-induced cellular signaling has not been identified. We use an experimental system of solar simulated light (SSL) to mimic solar UV and we demonstrate that Fyn is a primary redox sensor involved in SSL-induced signal transduction. Reactive oxygen species (ROS) generated by SSL exposure directly oxidize Cys488 of Fyn, resulting in increased Fyn kinase activity. Fyn oxidation was increased in mouse skin after SSL exposure, and Fyn knockout (Fyn−/−) mice formed larger and more tumors compared to Fyn wildtype mice when exposed to SSL for an extended period of time. Murine embryonic fibroblasts (MEFs) lacking Fyn as well as cells in which Fyn expression was knocked down were resistant to SSL-induced apoptosis. Furthermore, cells expressing mutant Fyn (C448A) were resistant to SSL-induced apoptosis. These findings suggest that Fyn acts as a regulatory nexus between solar UV, ROS and signal transduction during skin carcinogenesis.
Collapse
Affiliation(s)
- J-E Kim
- The Hormel Institute, University of Minnesota, Austin, MN, USA.,Department of Agricultural Biotechnology, Seoul National University, Seoul, Republic of Korea.,Advanced Institutes of Convergence Technology, Seoul National University, Suwon, Gyeonggi-do, Republic of Korea
| | - E Roh
- The Hormel Institute, University of Minnesota, Austin, MN, USA
| | - M H Lee
- The Hormel Institute, University of Minnesota, Austin, MN, USA.,China-US Hormel Cancer Institute, Zhenzhou, Henan, China
| | - D H Yu
- The Hormel Institute, University of Minnesota, Austin, MN, USA
| | - D J Kim
- The Hormel Institute, University of Minnesota, Austin, MN, USA
| | - T-G Lim
- The Hormel Institute, University of Minnesota, Austin, MN, USA.,Department of Agricultural Biotechnology, Seoul National University, Seoul, Republic of Korea.,Advanced Institutes of Convergence Technology, Seoul National University, Suwon, Gyeonggi-do, Republic of Korea.,Division of Strategic Food Research, Korea Food Research Institute, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - S K Jung
- The Hormel Institute, University of Minnesota, Austin, MN, USA.,Department of Agricultural Biotechnology, Seoul National University, Seoul, Republic of Korea.,Division of Strategic Food Research, Korea Food Research Institute, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - C Peng
- The Hormel Institute, University of Minnesota, Austin, MN, USA
| | - Y-Y Cho
- The Hormel Institute, University of Minnesota, Austin, MN, USA.,College of Pharmacy, The Catholic University of Korea, Bucheon-si, Gyeonggi-do, Republic of Korea
| | - S Dickinson
- University of Arizona Cancer Center, Tucson, AZ, USA
| | - D Alberts
- University of Arizona Cancer Center, Tucson, AZ, USA
| | - G T Bowden
- University of Arizona Cancer Center, Tucson, AZ, USA
| | - J Einspahr
- University of Arizona Cancer Center, Tucson, AZ, USA
| | - S P Stratton
- University of Arizona Cancer Center, Tucson, AZ, USA
| | | | - A M Bode
- The Hormel Institute, University of Minnesota, Austin, MN, USA
| | - K W Lee
- Department of Agricultural Biotechnology, Seoul National University, Seoul, Republic of Korea.,Advanced Institutes of Convergence Technology, Seoul National University, Suwon, Gyeonggi-do, Republic of Korea
| | - Z Dong
- The Hormel Institute, University of Minnesota, Austin, MN, USA
| |
Collapse
|
13
|
Oh JY, Kim YJ, Jang MG, Joo SC, Kwon WS, Kim SY, Jung SK, Yang DC. Investigation of ginsenosides in different tissues after elicitor treatment in Panax ginseng. J Ginseng Res 2014; 38:270-7. [PMID: 25379007 PMCID: PMC4213849 DOI: 10.1016/j.jgr.2014.04.004] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2013] [Revised: 04/28/2014] [Accepted: 04/29/2014] [Indexed: 11/19/2022] Open
Abstract
Background The effect of methyl jasmonate (MJ) on ginsenoside production in different organs of ginseng (Panax ginseng Meyer) was evaluated after the whole plant was dipped in an MJ-containing solution. MJ can induce the production of antioxidant defense genes and secondary metabolites in plants. In ginseng, MJ treatment in adventitious root resulted in the increase of dammarenediol synthase expression but a decrease of cycloartenol synthase expression, thereby enhancing ginsenoside biosynthesis. Although a previous study focused on the application of MJ to affect ginsenoside production in adventitious roots, we conducted our research on entire plants by evaluating the effect of exogenous MJ on ginsenoside production with the aim of obtaining new approaches to study ginsenoside biosynthesis response to MJ in vivo. Methods Different parts of MJ-treated ginseng plants were analyzed for ginsenoside contents (fine root, root body, epidermis, rhizome, stem, and leaf) by high-performance liquid chromatography. Results The total ginsenoside content of the ginseng root significantly increased after 2 d of MJ treatment compared with the control not subjected to MJ. Our results revealed that MJ treatment enhances ginsenoside production not in the epidermis but in the stele of the ginseng root, implying transportation of ginsenosides from the root vasculature to the epidermis. Application of MJ enhanced protopanaxadiol (PPD)-type ginsenosides, whereas chilling treatment induced protopanaxatriol (PPT)-type ginsenosides. Conclusion These findings indicate that the production of PPD-type and PPT-type ginsenosides is differently affected by abiotic and biotic stresses in the ginseng plant, and they might play different defense mechanism roles.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | - Deok-Chun Yang
- Corresponding author. Kyung Hee University, 1 Seocheon-dong, Kiheung-gu Yongin, Kyunggi-do 446-701, Korea.
| |
Collapse
|
14
|
Kim YJ, Jeon JN, Jang MG, Oh JY, Kwon WS, Jung SK, Yang DC. Ginsenoside profiles and related gene expression during foliation in Panax ginseng Meyer. J Ginseng Res 2013; 38:66-72. [PMID: 24558313 PMCID: PMC3915334 DOI: 10.1016/j.jgr.2013.11.001] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Revised: 05/24/2013] [Accepted: 05/28/2013] [Indexed: 11/17/2022] Open
Abstract
Panax ginseng is one of the most important medicinal plants in Asia. Triterpene saponins, known as ginsenosides, are the major pharmacological compounds in P. ginseng. The present study was conducted to evaluate the changes in ginsenoside composition according to the foliation stage of P. ginseng cultured in a hydroponic system. Among the three tested growth stages (closed, intermediate, and opened), the highest amount of total ginsenoside in the main and fine roots was in the intermediate stage. In the leaves, the highest amount of total ginsenoside was in the opened stage. The total ginsenoside content of the ginseng leaf was markedly increased in the transition from the closed to intermediate stage, and increased more slowly from the intermediate to opened leaf stage, suggesting active biosynthesis of ginsenosides in the leaf. Conversely, the total ginsenoside content of the main and fine roots decreased from the intermediate to opened leaf stage. This suggests movement of ginsenosides during foliation from the root to the leaf, or vice versa. The difference in the composition of ginsenosides between the leaf and root in each stage of foliation suggests that the ginsenoside profile is affected by foliation stage, and this profile differs in each organ of the plant. These results suggest that protopanaxadiol- and protopanaxatriol (PPT)-type ginsenosides are produced according to growth stage to meet different needs in the growth and defense of ginseng. The higher content of PPT-type ginsenosides in leaves could be related to the positive correlation between light and PPT-type ginsenosides.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Deok-Chun Yang
- Corresponding author. Department of Oriental Medicinal Materials and Processing, College of Life Science, Kyung Hee University, Suwon 449-701, Korea.
| |
Collapse
|
15
|
Jung SK, Kim MK, Shin J, Choi BY. A cross-sectional analysis of the relationship between daily alcohol consumption and serum adiponectin levels among adults aged 40 years or more in a rural area of Korea. Eur J Clin Nutr 2013; 67:841-7. [PMID: 23612511 DOI: 10.1038/ejcn.2013.74] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2012] [Revised: 03/11/2013] [Accepted: 03/11/2013] [Indexed: 12/26/2022]
Abstract
BACKGROUND/OBJECTIVES Light-to-moderate alcohol consumption has been proposed to raise serum adiponectin levels, but this view is controversial. There is little information on the effect of heavy drinking. The aim of this study was to examine the relationship between alcohol consumption and serum adiponectin levels in healthy Koreans. SUBJECTS/METHODS The design of the study was cross-sectional, using data from the Korean Multi-Rural Communities Cohort Study (MRCohort), which is a part of the Korean Genome Epidemiology Study (KoGES). The subjects were 1542 individuals (635 men and 907 women) aged ≥ 40 years who were recruited in Yangpyeong-Gun, Kyunggi province, South Korea, in 2005 and 2006. Daily alcohol consumption was calculated from average frequency of alcohol consumption and the amount of alcohol consumed per occasion using a structured questionnaire and serum adiponectin levels were measured. RESULTS Although adiponectin levels appeared to be higher in those consuming moderate levels of alcohol than in nondrinkers, the difference was not statistically significant. Heavy drinking (≥ 90.0 g/day) was significantly related to reduced serum adiponectin levels (P=0.003), although the significance of the relationship was reduced after adjusting for potential confounders (P=0.061) such as age, waist/hip ratio, blood pressure, fasting blood glucose, current smoker, higher education, protein intake, vitamin C intake and vitamin E intake in men. The relation seemed to be stronger in individuals consuming alcohol in the form of takju (Korean rice wine; P=0.022). CONCLUSIONS Heavy alcohol drinking (≥ 90.0 g/day) may be related to lower serum adiponectin levels in Korean men.
Collapse
Affiliation(s)
- S K Jung
- Department of Preventive Medicine, College of Medicine, Hanyang University, Seoul, Republic of Korea
| | | | | | | |
Collapse
|
16
|
Jang M, Min JW, Yang DU, Jung SK, Kim SY, Yang DC. Ethanolic fermentation from red ginseng extract using Saccharomyces cerevisiae and Saccharomyces carlsbergensis. Food Sci Biotechnol 2011. [DOI: 10.1007/s10068-011-0018-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
|
17
|
Park SH, Choi SS, Oh SA, Kim CK, Cho SJ, Lee JH, Ryu SH, Pak SH, Jung SK, Lee JI, Park GY, Choi SM, Chae YZ, Kang BH, Cheon DS, Kim HS. Detection and characterization of enterovirus associated with herpangina and hand, foot, and mouth disease in Seoul, Korea. Clin Lab 2011; 57:959-967. [PMID: 22239028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
BACKGROUND Human enteroviruses (HEVs) are a major cause of herpangina, HFMD (hand, foot, and mouth disease), and other neurological diseases in Seoul, Korea. METHODS A total of 56 specimens from hospitalized patients collected from February to December 2009 (37 females and 19 males) in Seoul were tested for HEV from stool, throat swab, and vesicle swab samples taken from patients with herpangina or HFMD using cell culture and RT-PCR in 2009. By the 1D gene, encoding the VP1 capsid protein, seven different HEV genotypes were detected with Coxsackievirus A2, A4, A5, A9, A16 (CA), Coxsackievirus B1 (CB), and Enterovirus 71 (EV71). The most prevalent genotype was CA16 (6, 10.7%), followed by CA2 (4, 7.1%), CA5 (4, 7.1%), EV71 (2, 3.6%), CA4 (1, 1.8%), CA9 (1, 1.8%), and CB1 (1, 1.8%). The 1D gene sequences of two EV71 strains were closely related with one another (98.5% nucleotide similarity) and belonged to the C4 genotype. CONCLUSIONS It is important to continuously survey the genetic characteristics of EV71 and CA16 from patients, which will provide useful data that aids in our understanding of HFMD infections in Seoul, Korea and may contribute to future control.
Collapse
MESH Headings
- Capsid Proteins/genetics
- Child, Preschool
- Coxsackievirus Infections/epidemiology
- Coxsackievirus Infections/virology
- Disease Outbreaks
- Enterovirus/genetics
- Enterovirus/isolation & purification
- Enterovirus A, Human/genetics
- Enterovirus A, Human/isolation & purification
- Enterovirus B, Human/genetics
- Enterovirus B, Human/isolation & purification
- Enterovirus Infections/epidemiology
- Enterovirus Infections/virology
- Feces/virology
- Female
- Hand, Foot and Mouth Disease/epidemiology
- Hand, Foot and Mouth Disease/virology
- Herpangina/epidemiology
- Herpangina/virology
- Humans
- Infant
- Infant, Newborn
- Male
- Pharynx/virology
- Phylogeny
- RNA, Viral/genetics
- RNA, Viral/isolation & purification
- Republic of Korea/epidemiology
- Sequence Analysis, RNA
Collapse
Affiliation(s)
- S H Park
- Seoul Metropolitan Government Research Institute of Public Health and Environment, Virus Team, 202-3, Yangjae-Dong, Seocho-Gu, Seoul 137-734, Republic of Korea.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
18
|
Kim YJ, Lee JH, Lee OR, Shim JS, Jung SK, Son NR, Kim JH, Kim SY, Yang DC. Isolation and Characterization of a Type II Peroxiredoxin Gene from Panax ginseng C. A. Meyer. J Ginseng Res 2010. [DOI: 10.5142/jgr.2010.34.4.296] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
|
19
|
Srinivasan S, Kim MK, Sathiyaraj G, Kim YJ, Jung SK, In JG, Yang DC. Microbacterium soli sp. nov., an α-glucosidase-producing bacterium isolated from soil of a ginseng field. Int J Syst Evol Microbiol 2010; 60:478-483. [DOI: 10.1099/ijs.0.012526-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Five Gram-type-positive, aerobic, rod-shaped, non-motile strains of Microbacterium (DCY 17T, Ms1, Ms2, Ms3 and Ms4) were isolated from soil from a ginseng field in Daejeon, South Korea. On the basis of 16S rRNA gene sequence similarity, these strains were shown to be related to Microbacterium esteraromaticum DSM 8609T (96.1 %), M. xylanilyticum DSM 16914T (96.0 %), M. aquimaris JS54-2T (95.6 %), M. insulae DS-66T (95.5 %), M. ketosireducens IFO 14548T (95.5 %) and M. arabinogalactanolyticum DSM 8611T (95.4 %). Chemotaxonomic data revealed that the type strain, DCY 17T, possesses menaquinones MK-12, MK-11 and MK-13 and the predominant fatty acids C15 : 0 anteiso (32.5 %), C15 : 0 iso (27.5 %), C16 : 0 iso (17.0 %), C17 : 0 anteiso (13.2 %), C17 : 0 iso (6.1 %) and C14 : 0 iso (2.1 %). The DNA G+C content of strain DCY 17T is 70.2 mol% and those of strains Ms1 to Ms4 are in the range 68.9–73.5 mol%. The physiological and biochemical tests suggested that these strains represent a novel species. Based on these data, DCY 17T (=KCTC 19237T =LMG 24010T) is classified as the type strain of a novel Microbacterium species, for which the name Microbacterium soli sp. nov. is proposed.
Collapse
Affiliation(s)
- Sathiyaraj Srinivasan
- Korean Ginseng Center and Ginseng Genetic Resource Bank, Kyung Hee University, 1 Seocheon-dong, Giheung-gu Yongin-si, Gyeonggi-do 449-701, Republic of Korea
| | - Myung Kyum Kim
- Department of Bio & Environmental Technology, Division of Environmental & Life Science, College of Natural Science, Seoul Women'sUniversity, Seoul 139-774, Republic of Korea
| | - Gayathri Sathiyaraj
- Korean Ginseng Center and Ginseng Genetic Resource Bank, Kyung Hee University, 1 Seocheon-dong, Giheung-gu Yongin-si, Gyeonggi-do 449-701, Republic of Korea
| | - Yeon-Ju Kim
- Korean Ginseng Center and Ginseng Genetic Resource Bank, Kyung Hee University, 1 Seocheon-dong, Giheung-gu Yongin-si, Gyeonggi-do 449-701, Republic of Korea
| | - Seok-Kyu Jung
- Korean Ginseng Center and Ginseng Genetic Resource Bank, Kyung Hee University, 1 Seocheon-dong, Giheung-gu Yongin-si, Gyeonggi-do 449-701, Republic of Korea
| | - Jun-Gyo In
- Korean Ginseng Center and Ginseng Genetic Resource Bank, Kyung Hee University, 1 Seocheon-dong, Giheung-gu Yongin-si, Gyeonggi-do 449-701, Republic of Korea
| | - Deok-Chun Yang
- Korean Ginseng Center and Ginseng Genetic Resource Bank, Kyung Hee University, 1 Seocheon-dong, Giheung-gu Yongin-si, Gyeonggi-do 449-701, Republic of Korea
| |
Collapse
|
20
|
Parvin S, Pulla RK, Kim YJ, Sathiyaraj G, Jung SK, Khorolragchaa A, In JG, Yang DC. Isolation and Characterization of Glycolate Oxidase Gene from Panax ginseng C. A. Meyer. J Ginseng Res 2009. [DOI: 10.5142/jgr.2009.33.4.249] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
|
21
|
Lee YS, Kim KS, Chung YS, Cheon DS, Jung SK, Park KS, Na BK, Jee YM, Kim DS, Yoon JD, Song CY, Lee KH. PCR-RFLP based molecular typing of enteroviruses isolated from patients with aseptic meningitis in Korea. Arch Virol 2002; 147:1711-20. [PMID: 12209311 DOI: 10.1007/s00705-002-0834-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We have evaluated PCR-RFLP as a practical method for rapid typing of enteroviruses causing aseptic meningitis in Korea. Through blind examination of 80 clinical isolates from patients with aseptic meningitis, we have compared the results of conventional serotyping with PCR-RFLP based genotyping, which was developed for this study. Among the 80 case isolates, which had been previously typed by routine neutralization test, only 42 cases (52.5%) were matched with typing by PCR-RFLP. The result clearly demonstrated that the enterovirus serotype does not coincide with the genotype. Therefore, the classification of enteroviruses by genotyping with PCR-RFLP, although rapid and simple, may be complicated by regional or seasonal differences. However, the PCR-RFLP method developed in this study is applicable to the epidemiological study of enteroviruses when regional or seasonal differences exist, and is useful in identifying the source of an infection.
Collapse
Affiliation(s)
- Y S Lee
- Department of Life Science, College of Natural Science, Chung-Ang University, Seoul, Korea
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
22
|
Twig G, Jung SK, Messerli MA, Smith PJ, Shirihai OS. Real-time detection of reactive oxygen intermediates from single microglial cells. Biol Bull 2001; 201:261-262. [PMID: 11687412 DOI: 10.2307/1543355] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Affiliation(s)
- G Twig
- The Bruce Rappaport Faculty of Medicine, Technion, Israel
| | | | | | | | | |
Collapse
|
23
|
Porterfield DM, Laskin JD, Jung SK, Malchow RP, Billack B, Smith PJ, Heck DE. Proteins and lipids define the diffusional field of nitric oxide. Am J Physiol Lung Cell Mol Physiol 2001; 281:L904-12. [PMID: 11557594 DOI: 10.1152/ajplung.2001.281.4.l904] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Nitric oxide (NO) fluxes released from the surface of individual activated macrophages or cells localized in small aggregates were measured with a novel polarographic self-referencing microsensor. NO fluxes could be detected at distances from the cells of 100-500 microm. The initial flux and the distance from the cells at which NO could be detected were directly related to the number of cells in the immediate vicinity of the probe releasing NO. Thus, whereas NO fluxes of approximately 1 pmol. cm(-2). s(-1) were measured from individual macrophages, aggregates composed of groups of cells varying in number from 18 to 48 cells produced NO fluxes of between approximately 4 and 10 pmol. cm(-2). s(-1). NO fluxes required the presence of L-arginine. Signals were significantly reduced by the addition of hemoglobin and by N-nitro-L-arginine methyl ester. NO fluxes were greatest when the sensor was placed immediately adjacent to cell membranes and declined as the distance from the cell increased. The NO signal was markedly reduced in the presence of the protein albumin but not by either oxidized or reduced glutathione. A reduction in the NO signal was also noted after the addition of lipid micelles to the culture medium. These results demonstrate that NO can be detected at significant distances from the cell of origin. In addition, both proteins and lipids strongly influence the net movement of free NO from macrophages. This suggests that these tissue components play an important role in regulating the biological activity of NO.
Collapse
Affiliation(s)
- D M Porterfield
- BioCurrents Research Center, Marine Biological Laboratory, Woods Hole, Massachusetts 02543, USA
| | | | | | | | | | | | | |
Collapse
|
24
|
Park BJ, Lee DG, Yu JR, Jung SK, Choi K, Lee J, Lee J, Kim YS, Lee JI, Kwon JY, Lee J, Singson A, Song WK, Eom SH, Park CS, Kim DH, Bandyopadhyay J, Ahnn J. Calreticulin, a calcium-binding molecular chaperone, is required for stress response and fertility in Caenorhabditis elegans. Mol Biol Cell 2001; 12:2835-45. [PMID: 11553721 PMCID: PMC59717 DOI: 10.1091/mbc.12.9.2835] [Citation(s) in RCA: 108] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2001] [Revised: 06/19/2001] [Accepted: 07/08/2001] [Indexed: 11/11/2022] Open
Abstract
Calreticulin (CRT), a Ca(2+)-binding protein known to have many cellular functions, including regulation of Ca(2+) homoeostasis and chaperone activity, is essential for heart and brain development during embryogenesis in mice. Here, we report the functional characterization of Caenorhabditis elegans calreticulin (crt-1). A crt-1 null mutant does not result in embryonic lethality but shows temperature-dependent reproduction defects. In C. elegans CRT-1 is expressed in the intestine, pharynx, body-wall muscles, head neurons, coelomocytes, and in sperm. crt-1 males exhibit reduced mating efficiency and defects late in sperm development in addition to defects in oocyte development and/or somatic gonad function in hermaphrodites. Furthermore, crt-1 and itr-1 (inositol triphosphate receptor) together are required for normal behavioral rhythms. crt-1 transcript level is elevated under stress conditions, suggesting that CRT-1 may be important for stress-induced chaperoning function in C. elegans.
Collapse
Affiliation(s)
- B J Park
- Department of Life Science, Kwangju Institute of Science and Technology, Kwangju, 500-712, Korea
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
25
|
Jung SK, Trimarchi JR, Sanger RH, Smith PJ. Development and application of a self-referencing glucose microsensor for the measurement of glucose consumption by pancreatic beta-cells. Anal Chem 2001; 73:3759-67. [PMID: 11510845 DOI: 10.1021/ac010247u] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Glucose gradients generated by an artificial source and beta-cells were measured using an enzyme-based glucose microsensor, 8-microm tip diameter, as a self-referencing electrode. The technique is based on a difference measurement between two locations in a gradient and thus allows us to obtain real-time flux values with minimal impact of sensor drift or noise. Flux values were derived by incorporation of the measured differential current into Fick's first equation. In an artificial glucose gradient, a flux detection limit of 8.2 +/- 0.4 pmol.cm(-2).s(-1) (mean +/- SEM, n = 7) with a sensor sensitivity of 7.0 +/- 0.4 pA/ mM (mean +/- SEM, n = 16) was demonstrated. Under biological conditions, the glucose sensor showed no oxygen dependence with 5 mM glucose in the bulk medium. The addition of catalase to the bulk medium was shown to ameliorate surface-dependent flux distortion close to specimens, suggesting an underlying local accumulation of hydrogen peroxide. Glucose flux from beta-cell clusters, measured in the presence of 5 mM glucose, was 61.7 +/- 9.5 fmol.nL(-1).s(-1) (mean +/- SEM, n = 9) and could be pharmacologically modulated. Glucose consumption in response to FCCP (1 microM) transiently increased, subsequently decreasing to below basal by 93 +/- 16 and 56 +/- 6%, respectively (mean +/- SEM, n = 5). Consumption was decreased after the application of 10 microM rotenone by 74 +/- 5% (mean +/- SEM, n = 4). These results demonstrate that an enzyme-based amperometric microsensor can be applied in the self-referencing mode. Further, in obtaining glucose flux measurements from small clusters of cells, these are the first recordings of the real-time dynamic of glucose movements in a biological microenvironment.
Collapse
Affiliation(s)
- S K Jung
- Marine Biological Laboratory, BioCurrents Research Center, Woods Hole, Massachusetts 02543, USA
| | | | | | | |
Collapse
|
26
|
Murakawa M, Jung SK, Iijima K, Yonehara S. Apoptosis-inducing protein, AIP, from parasite-infected fish induces apoptosis in mammalian cells by two different molecular mechanisms. Cell Death Differ 2001; 8:298-307. [PMID: 11319613 DOI: 10.1038/sj.cdd.4400811] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2000] [Revised: 09/10/2000] [Accepted: 11/08/2000] [Indexed: 11/08/2022] Open
Abstract
AIP (apoptosis-inducing protein) is a protein purified and cloned from Chub mackerel infected with the larval nematode, Anisakis simplex, which induces apoptosis in various mammalian cells including human tumor cell lines. AIP has shown structural and functional homology to L-amino acid oxidase (LAO) which oxidizes several L-amino acids including L-lysine and AIP-induced apoptosis has been suggested to be mediated by H2O2 generated by LAO activity of AIP. In this study, we confirmed that recombinant AIP generated enough H2O2 in culture medium to induce rapid apoptosis in cells and this apoptosis was clearly inhibited by co-cultivation with antioxidants such as catalase and N-acetyl-cysteine. Surprisingly, however, we found that AIP still could induce H2O2-independent apoptosis more slowly than H2O2-dependent one in HL-60 cells even in the presence of antioxidants. In addition, the HL-60-derived cell line HP100-1, which is a H2O2-resistant variant, underwent apoptosis on treatment with AIP with a similar delayed time course. The latter apoptosis was completely blocked by addition of L-lysine to the culture medium, which is the best substrate of AIP as LAO, indicating that decreased concentration of L-lysine in the culture medium by AIP-treatment induced apoptosis. We also showed that the both apoptosis by AIP were associated with the release of cytochrome c from mitochondria and activation of caspase-9, and overexpressed Bcl-2 could inhibit both of the AIP-induced apoptosis. These results indicate that AIP induces apoptosis in cells by two distinct mechanisms; one rapid and mediated by H2O2, the other delayed and mediated by deprivation of L-lysine, both of which utilize caspase-9/cytochrome c system.
Collapse
Affiliation(s)
- M Murakawa
- Institute for Virus Research, Kyoto University, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | | | | | | |
Collapse
|
27
|
Jung SK, Hammar K, Smith PJ. Development of self-referencing oxygen microsensor and its application to single pancreatic HIT cells: effects of adenylate cyclase activator forskolin on oxygen consumption. Biol Bull 2000; 199:197-198. [PMID: 11081733 DOI: 10.2307/1542895] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Affiliation(s)
- S K Jung
- BioCurrents Research Center, Marine Biological Laboratory, Woods Hole, Massachusetts 02543, USA.
| | | | | |
Collapse
|
28
|
Jung SK, Mai A, Iwamoto M, Arizono N, Fujimoto D, Sakamaki K, Yonehara S. Purification and cloning of an apoptosis-inducing protein derived from fish infected with Anisakis simplex, a causative nematode of human anisakiasis. J Immunol 2000; 165:1491-7. [PMID: 10903755 DOI: 10.4049/jimmunol.165.3.1491] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
While investigating the effect of marine products on cell growth, we found that visceral extracts of Chub mackerel, an ocean fish, had a powerful and dose-dependent apoptosis-inducing effect on a variety of mammalian tumor cells. This activity was strikingly dependent on infection of the C. mackerel with the larval nematode, Anisakis simplex. After purification of the protein responsible for the apoptosis-inducing activity, we cloned the corresponding gene and found it to be a flavoprotein. This protein, termed apoptosis-inducing protein (AIP), was also found to possess an endoplasmic reticulum retention signal (C-terminal KDEL sequence) and H2O2-producing activity, indicating that we had isolated a novel reticuloplasimin with potent apoptosis-inducing activity. AIP was induced in fish only after infection with larval nematode and was localized to capsules that formed around larvae to prevent their migration to host tissues. Our results suggest that AIP may function to impede nematode infection.
Collapse
Affiliation(s)
- S K Jung
- M, F, L Science Center, Tensei-suisan Co., Karatsu, Saga, Japan; Institute for Virus Research, Kyoto University, Shogoin, Sakyo-ku, Kyoto, Japan
| | | | | | | | | | | | | |
Collapse
|
29
|
Jung SK, Kauri LM, Qian WJ, Kennedy RT. Correlated oscillations in glucose consumption, oxygen consumption, and intracellular free Ca(2+) in single islets of Langerhans. J Biol Chem 2000; 275:6642-50. [PMID: 10692473 DOI: 10.1074/jbc.275.9.6642] [Citation(s) in RCA: 90] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Micron-sized sensors were used to monitor glucose and oxygen levels in the extracellular space of single islets of Langerhans in real-time. At 10 mM glucose, oscillations in intraislet glucose concentration were readily detected. Changes in glucose level correspond to changes in glucose consumption by glycolysis balanced by mass transport into the islet. Oscillations had a period of 3.1 +/- 0.2 min and amplitude of 0.8 +/- 0.1 mM glucose (n = 21). Superimposed on these oscillations were faster fluctuations in glucose level during the periods of low glucose consumption. Oxygen level oscillations that were out of phase with the glucose oscillations were also detected. Oscillations in both oxygen and glucose consumption were strongly dependent upon extracellular Ca(2+) and sensitive to nifedipine. Simultaneous measurements of glucose with intracellular Ca(2+) ([Ca(2+)](i)) revealed that decreases in [Ca(2+)](i) preceded increases in glucose consumption by 7.4 +/- 2.1 s during an oscillation (n = 9). Conversely, increases in [Ca(2+)](i) preceded increases in oxygen consumption by 1.5 +/- 0.2 s (n = 4). These results suggest that during oscillations, bursts of glycolysis begin after Ca(2+) has stopped entering the cell. Glycolysis stimulates further Ca(2+) entry, which in turn stimulates increases in respiration. The data during oscillation are in contrast to the time course of events during initial exposure to glucose. Under these conditions, a burst of oxygen consumption precedes the initial rise in [Ca(2+)](i). A model to explain these results is described.
Collapse
Affiliation(s)
- S K Jung
- Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, USA
| | | | | | | |
Collapse
|
30
|
Abstract
An oxygen microsensor with a < 3-micron tip diameter was developed for monitoring oxygen levels at single cells and mouse pancreatic islets. The sensor was fabricated by electrochemically recessing an etched Pt wire inside a pulled glass micropipet and then coating with cellulose acetate. This fabrication process was found to be simpler than previous oxygen electrode designs of comparable size. The microsensors had a average sensitivity of 0.59 +/- 0.29 pA/mmHg (mean +/- SD, n = 42), signals that were minimally perturbed by convection, and response times of < 1 s. The electrode was used to measure the oxygen gradient around and inside single mouse islets. The measurements demonstrate that oxygen levels within even the largest islets at maximal glucose stimulation are 67 +/- 1.6 mmHg (mean +/- SD, n = 5), indicating that islets have adequate oxygen supplies by diffusion under tissue culture conditions to support insulin secretion. The electrode was also used to record the dynamics of oxygen level at single islets as a function of glucose concentration. As glucose level was changed from 3 to 10 mM, oxygen level decreased by 15.8 +/- 2.3 mmHg (mean +/- SEM, n = 6) and oscillations with a period of 3.3 +/- 0.6 min (mean +/- SEM, n = 6) appeared in the oxygen level. In islets bathed in quiescent solutions containing 10 mM glucose, similar oscillations could be observed. In addition, in the quiet solutions it was possible to detect faster oscillations with a period of 12.1 +/- 1.7 s (mean +/- SEM, n = 6) superimposed on the slower oscillations. Oxygen consumption could also be observed at single insulinoma cells using the electrode. Individual cells also showed oscillations in oxygen consumption with a period of a few seconds. The results demonstrate that the electrode can be used for dynamic oxygen level recordings in biological microenvironments.
Collapse
Affiliation(s)
- S K Jung
- Department of Chemistry, University of Florida, Gainesville 32611-7200, USA
| | | | | | | | | |
Collapse
|
31
|
Jung SK, Aspinwall CA, Kennedy RT. Detection of multiple patterns of oscillatory oxygen consumption in single mouse islets of Langerhans. Biochem Biophys Res Commun 1999; 259:331-5. [PMID: 10362508 DOI: 10.1006/bbrc.1999.0784] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A novel oxygen microsensor was used to measure oxygen levels in single mouse islets as a function of glucose concentration. Oxygen consumption of individual islets was 5.99 +/- 1.17, 9.21 +/- 2.15, and 12.22 +/- 2.16 pmol/min at 3, 10, and 20 mM glucose, respectively (mean +/- SEM, n = 10). Consumption of oxygen was islet-size dependent as larger islets consumed more oxygen than smaller islets but smaller islets consumed more oxygen per unit volume than larger islets. Elevating glucose levels from 3 to 10 mM induced pronounced fast oscillations in oxygen level (period of 12.1 +/- 1.7 s, n = 6) superimposed on top of large slow oscillations (period of 3.3 +/- 0.6 min, n = 6). The fast oscillations could be completely abolished by treatment with the L-type Ca2+-channel blocker nifedipine (40 microM) with a lesser effect on slow oscillations. Slow oscillations were almost completely dependent upon extracellular Ca2+. The oxygen patterns closely mimic those that have previously been reported for intracellular Ca2+ levels and are suggestive of an important role for Ca2+ in amplifying metabolic oscillations.
Collapse
Affiliation(s)
- S K Jung
- Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, USA
| | | | | |
Collapse
|
32
|
Abstract
In adults, cellulitis is usually caused by group A streptococci and Staphylococcus aureus. However, in patients with underlying disease, it may be caused by other organisms, such as Acinetobacter, Clostridium septicum, Enterobacter, Haemophilus influenzae, Proteus mirabilis or Escherichia coli. We report three cases of cellulitis of the lower legs where E. coli was the causative bacterial organism. It is important to suspect E. coli as a causative organism if blistering cellulitis occurs, especially in patients with underlying diseases.
Collapse
Affiliation(s)
- T Y Yoon
- Department of Dermatology, College of Medicine, Chungbuk National University, Cheongju, Chungbuk, Korea
| | | | | |
Collapse
|
33
|
Matsuno T, Jung SK, Matsumoto Y, Saito M, Morikawa J. Preferential cytotoxicity to tumor cells of 3,5-diprenyl-4-hydroxycinnamic acid (artepillin C) isolated from propolis. Anticancer Res 1997; 17:3565-8. [PMID: 9413203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
A tumoricidal substance was isolated from Brazilian propolis as guided by cytotoxicity assay on HuH 13 (human hepatocellular carcinoma) cell and was characterized to be 3-[4-hydroxy-3,5-bis (3-methyl-2-butenyl) phenyl]-2-propenoic acid (3,5-diprenyl-4-hydroxycinnamic acid (artepillin C)). It exhibited preferential cytotoxicity to tumor cells cultured in vitro. The cytotoxicity observed seemed to be partly attributable to apoptosis-like DNA fragmentation. The compound showed anti-tumor activity more effective than that of 5-fluorouracil to transplantable human tumor cell lines when tested on histoculture drug response assay system.
Collapse
Affiliation(s)
- T Matsuno
- National Institute of Health, Tokyo, Japan
| | | | | | | | | |
Collapse
|
34
|
Abstract
Using affinity chromatography on lactosyl-Sepharose, a beta-galactoside-binding protein of 38 kDa was detected in mouse L1210 lymphocytic leukemia cells. Immunoblotting analysis revealed that it is distinct from any known larger molecular weight galectin. The partial amino acid sequences of the 38 kDa protein indicated that it is a novel member of the galectin family. This 38 kDa lectin is expressed in lymphocytic cell lines but not macrophage-like cell lines.
Collapse
Affiliation(s)
- A Mai
- Department of Applied Biological Science, Faculty of Agriculture, Tokyo University of Agriculture and Technology.
| | | | | | | |
Collapse
|
35
|
Abstract
An oxidase-based glucose sensor has been developed that uses a mercaptosilane-modified platinum electrode to achieve selectivity of electrochemical interferants. A platinum-iridium (9:1) wire (0.178 mm o.d., sensing area of 1.12 mm2) is modified with (3-mercaptopropyl)trimethoxysilane. The modified sensors show excellent operational stability for more than 5 days. Glucose oxidase is immobilized on the modified surface (i) by using 3-maleimidopropionic acid as a linker or (ii) by cross-liking with bovine serum albumin using glutaraldehyde. Sensitivities in the range of 9.97 nA/mM glucose are observed when the enzyme is immobilized by method ii. Lower sensitivities (1.13 x 10(-1) nA/mM glucose) are observed when immobilization method i is employed. In terms of linear response range, the sensor enzyme-immobilized by method i is superior to that immobilized by method ii. The linearity is improved upon coating the enzyme layer with polyurethane. The sensor immobilized by method ii and coated with polyurethane exhibits a linear range to 15 mM glucose and excellent selectivity to glucose (0.47 nA/mM) against interferants such as ascorbic acid, uric acid, and acetaminophen.
Collapse
Affiliation(s)
- S K Jung
- Department of Chemistry, University of Kansas, Lawrence 66045, USA
| | | |
Collapse
|
36
|
Abstract
Two carbohydrate-binding proteins with subunit molecular weight of about 17,500 and 16,500, respectively, were isolated from Triton X-100 extracts of rat kidney using a lactose affinity column. They did not require Ca2+ for the carbohydrate-binding nor reducing agents for maintaining their activity. The partial amino acid sequence of the 17.5-kDa protein (rkCBP-17.5), the main component, revealed that this protein is a novel member of a superfamily of beta-galactoside-binding animal lectins. The N-terminal amino acid sequence of the 16.5 kDa component (rkCBP-16.5) indicated that it is a fragment derived from the IgE-binding protein (IgEBP). Monoclonal antibodies to rkCBP-17.5 were prepared and used to examine the distribution of the lectin in various organs of adult rats. Immunoreactive protein with the same molecular weight was found in lung, spleen and liver, in lesser amounts in heart, and in trace amounts in brain and skeletal muscle. rkCBP-17.5 exhibits binding activity to various saccharides with the following order of affinity: N-acetyllactosamine > lactose > D-galactose > methyl alpha-D-galactopyranoside > N-acetyl-D-galactosamine > methyl beta-D-galactopyranoside. It binds to Engelbreth-Holm-Swarm(EHS) tumor laminin and rat plasma fibronectin, but does not bind to human plasma fibronectin.
Collapse
Affiliation(s)
- S K Jung
- Department of Applied Biological Science, Faculty of Agriculture, Tokyo University of Agriculture and Technology
| | | |
Collapse
|
37
|
Abstract
Because there are contradictory reports about the interaction of plasma fibronectin with elastin, we investigated the interaction in vitro. When human plasma was applied to an alpha-elastin-Sepharose column at 4 degrees C, the column-binding fraction contained fibronectin. When isolated plasma fibronectin was applied to the same column at 4 degrees C, most of the fibronectin bound to the column and was eluted with 1 M KBr. However, the binding affinity of plasma fibronectin to the alpha-elastin-Sepharose column was much weaker at 25 degrees C than at 4 degrees C. The elastin-plasma fibronectin interaction was further confirmed by demonstrating the binding of alpha-elastin to fibronectin on polyvinylidene difluoride membranes using an alpha-elastin specific antibody. The elevation of the surface hydrophobicity of plasma fibronectin at 4 degrees C was observed by hydrophobic chromatography, using alkyl-Sepharose columns. It seems that the binding of plasma fibronectin to alpha-elastin involves hydrophobic interaction, which is affected by temperature and possibly by other factors.
Collapse
Affiliation(s)
- S Harumiya
- Laboratory of Biological Chemistry, Faculty of Agriculture, Tokyo University of Agriculture and Technology
| | | | | | | |
Collapse
|
38
|
Ohshima M, Jung SK, Yasuda T, Sakano Y, Fujimoto D. Active oxygen-induced modification alters properties of collagen as a substratum for fibroblasts. Matrix 1993; 13:187-94. [PMID: 8326909 DOI: 10.1016/s0934-8832(11)80002-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Acid-soluble collagen from rat skin was modified by active oxygen in vitro, and properties of the modified collagen as a substratum for fibroblasts were studied. When collagen was treated with ascorbate-copper ion systems, cross-linking and a little degradation occurred rapidly. The cells attached but spread poorly on the modified collagen gel as compared with on the untreated collagen gel. On the other hand, when collagen was treated with H2O2-copper ion systems, only degradation of collagen molecule occurred rapidly. This treatment did not affect the attachment and spreading of the cells on the collagen gel, but when the incubation was continued for a long time, the cells migrated actively and gathered. Thymidine incorporation by the cells was suppressed on both modified collagen gels as compared with that on untreated collagen gel, and the extent of the suppression on the H2O2-copper-treated collagen was larger than that on the ascorbate-copper-treated collagen. These results indicate that the active oxygen-induced cross-linking and degradation significantly alter properties of collagen as a substratum for fibroblasts.
Collapse
Affiliation(s)
- M Ohshima
- Department of Applied Biological Science, Faculty of Agriculture, Tokyo University of Agriculture and Technology, Japan
| | | | | | | | | |
Collapse
|
39
|
Abstract
Fifteen children who sustained traumatic spinal cord injury in British Columbia over a 13-year period have been reviewed. The aetiology, incidence of spinal fracture, length of hospitalisation and subsequent spinal surgery, and their self-care, transfer and ambulatory abilities, bowel and bladder management, schooling, employment and place of abode have been determined.
Collapse
|