1
|
Jo CS, Myung CH, Yoon YC, Ahn BH, Min JW, Seo WS, Lee DH, Kang HC, Heo YH, Choi H, Hong IK, Hwang JS. The Effect of Lactobacillus plantarum Extracellular Vesicles from Korean Women in Their 20s on Skin Aging. Curr Issues Mol Biol 2022; 44:526-540. [PMID: 35723322 PMCID: PMC8928950 DOI: 10.3390/cimb44020036] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [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: 12/03/2021] [Revised: 01/14/2022] [Accepted: 01/17/2022] [Indexed: 12/20/2022] Open
Abstract
Extracellular vesicles, which are highly conserved in most cells, contain biologically active substances. The vesicles and substances interact with cells and impact physiological mechanisms. The skin is the most external organ and is in direct contact with the external environment. Photoaging and skin damage are caused by extrinsic factors. The formation of wrinkles is a major indicator of skin aging and is caused by a decrease in collagen and hyaluronic acid. MMP-1 expression is also increased. Due to accruing damage, skin aging reduces the ability of the skin barrier, thereby lowering the skin’s ability to contain water and increasing the amount of water loss. L. plantarum suppresses various harmful bacteria by secreting an antimicrobial substance. L. plantarum is also found in the skin, and research on the interactions between the bacteria and the skin is in progress. Although several studies have investigated L. plantarum, there are only a limited number of studies on extracellular vesicles (EV) derived from L. plantarum, especially in relation to skin aging. Herein, we isolated EVs that were secreted from L. plantarum of women in their 20s (LpEVs). We then investigated the effect of LpEVs on skin aging in CCD986sk. We showed that LpEVs modulated the mRNA expression of ECM related genes in vitro. Furthermore, LpEVs suppressed wrinkle formation and pigmentation in clinical trials. These results demonstrated that LpEVs have a great effect on skin aging by regulating ECM related genes. In addition, our study offers important evidence on the depigmentation effect of LpEVs.
Collapse
Affiliation(s)
- Chan Song Jo
- Department of Genetic Engineering & Graduate School of Biotechnology, College of Life Sciences, Kyung Hee University, Yongin 17104, Gyeonggi-do, Korea; (C.S.J.); (C.H.M.)
| | - Cheol Hwan Myung
- Department of Genetic Engineering & Graduate School of Biotechnology, College of Life Sciences, Kyung Hee University, Yongin 17104, Gyeonggi-do, Korea; (C.S.J.); (C.H.M.)
| | - Yeo Cho Yoon
- Human & Microbiome Communicating Laboratory, GFC Co., Ltd., Hwasung 18471, Gyeonggi-do, Korea; (Y.C.Y.); (B.H.A.); (W.S.S.); (H.C.K.)
| | - Beom Hee Ahn
- Human & Microbiome Communicating Laboratory, GFC Co., Ltd., Hwasung 18471, Gyeonggi-do, Korea; (Y.C.Y.); (B.H.A.); (W.S.S.); (H.C.K.)
| | - Jin Woo Min
- Green & Biome Customizing Laboratory, GFC Co., Ltd., Hwasung 18471, Gyeonggi-do, Korea;
| | - Won Sang Seo
- Human & Microbiome Communicating Laboratory, GFC Co., Ltd., Hwasung 18471, Gyeonggi-do, Korea; (Y.C.Y.); (B.H.A.); (W.S.S.); (H.C.K.)
- Green & Biome Customizing Laboratory, GFC Co., Ltd., Hwasung 18471, Gyeonggi-do, Korea;
| | - Dong Hwan Lee
- Clinical Business Division, Korea Dermatology Research Institute, GFC Co., Ltd., Sungnam 13517, Gyeonggi-do, Korea;
| | - Hee Cheol Kang
- Human & Microbiome Communicating Laboratory, GFC Co., Ltd., Hwasung 18471, Gyeonggi-do, Korea; (Y.C.Y.); (B.H.A.); (W.S.S.); (H.C.K.)
- Green & Biome Customizing Laboratory, GFC Co., Ltd., Hwasung 18471, Gyeonggi-do, Korea;
| | - Yun Hoe Heo
- R&D Complex, HK Kolmar Co., Ltd., Seoul 30004, Korea; (Y.H.H.); (H.C.); (I.K.H.)
| | - Hyeong Choi
- R&D Complex, HK Kolmar Co., Ltd., Seoul 30004, Korea; (Y.H.H.); (H.C.); (I.K.H.)
| | - In Ki Hong
- R&D Complex, HK Kolmar Co., Ltd., Seoul 30004, Korea; (Y.H.H.); (H.C.); (I.K.H.)
| | - Jae Sung Hwang
- Department of Genetic Engineering & Graduate School of Biotechnology, College of Life Sciences, Kyung Hee University, Yongin 17104, Gyeonggi-do, Korea; (C.S.J.); (C.H.M.)
- Correspondence:
| |
Collapse
|
2
|
Moon SS, Lee HJ, Mathiyalagan R, Kim YJ, Yang DU, Lee DY, Min JW, Jimenez Z, Yang DC. Synthesis of a Novel α-Glucosyl Ginsenoside F1 by Cyclodextrin Glucanotransferase and Its In Vitro Cosmetic Applications. Biomolecules 2018; 8:biom8040142. [PMID: 30423825 PMCID: PMC6315644 DOI: 10.3390/biom8040142] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [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: 08/28/2018] [Revised: 10/30/2018] [Accepted: 10/30/2018] [Indexed: 12/05/2022] Open
Abstract
Ginsenosides from Panax ginseng (Korean ginseng) are unique triterpenoidal saponins that are considered to be responsible for most of the pharmacological activities of P. ginseng. However, the various linkage positions cause different pharmacological activities. In this context, we aimed to synthesize new derivatives of ginsenosides with unusual linkages that show enhanced pharmacological activities. Novel α-glycosylated derivatives of ginsenoside F1 were synthesized from transglycosylation reactions of dextrin (sugar donor) and ginsenoside F1 (acceptor) by the successive actions of Toruzyme®3.0L, a cyclodextrin glucanotransferase. One of the resultant products was isolated and identified as (20S)-3β,6α,12β-trihydroxydammar-24ene-(20-O-β-D-glucopyranosyl-(1→2)-α-D-glucopyranoside) by various spectroscopic characterization techniques of fast atom bombardment-mass spectrometry (FAB-MS), infrared spectroscopy (IR), proton-nuclear magnetic resonance (1H-NMR), 13C-NMR, gradient heteronuclear single quantum coherence (gHSQC), and gradient heteronuclear multiple bond coherence (gHMBC). As expected, the novel α-glycosylated ginsenoside F1 (G1-F1) exhibited increased solubility, lower cytotoxicity toward human dermal fibroblast cells (HDF), and higher tyrosinase activity and ultraviolet A (UVA)-induced inhibitory activity against matrix metalloproteinase-1 (MMP-1) than ginsenoside F1. Since F1 has been reported as an antiaging and antioxidant agent, the enhanced efficacies of the novel α-glycosylated ginsenoside F1 suggest that it might be useful in cosmetic applications after screening.
Collapse
Affiliation(s)
- Seong Soo Moon
- Department of Oriental Medicinal Biotechnology, College of Life Science, Kyung Hee University, 1 Seocheon-dong, Giheung-gu, Yongin-si, Gyeonggi-do 17104, Korea.
| | - Hye Jin Lee
- Department of Oriental Medicinal Biotechnology, College of Life Science, Kyung Hee University, 1 Seocheon-dong, Giheung-gu, Yongin-si, Gyeonggi-do 17104, Korea.
| | - Ramya Mathiyalagan
- Graduate School of Biotechnology, College of Life Science, Kyung Hee University, 1 Seocheon-dong, Giheung-gu, Yongin-si, Gyeonggi-do 17104, Korea.
| | - Yu Jin Kim
- Department of Oriental Medicinal Biotechnology, College of Life Science, Kyung Hee University, 1 Seocheon-dong, Giheung-gu, Yongin-si, Gyeonggi-do 17104, Korea.
| | - Dong Uk Yang
- Department of Oriental Medicinal Biotechnology, College of Life Science, Kyung Hee University, 1 Seocheon-dong, Giheung-gu, Yongin-si, Gyeonggi-do 17104, Korea.
- K-gen (corp), 218, Gajeong-ro, Yuseong-gu, Daejeon 34129, Korea.
| | - Dae Young Lee
- Department of Herbal Crop Research, National Institute of Horticultural and Herbal Science, RDA, Eumseong 27709, Korea.
| | - Jin Woo Min
- Department of Oriental Medicinal Biotechnology, College of Life Science, Kyung Hee University, 1 Seocheon-dong, Giheung-gu, Yongin-si, Gyeonggi-do 17104, Korea.
| | - Zuly Jimenez
- Graduate School of Biotechnology, College of Life Science, Kyung Hee University, 1 Seocheon-dong, Giheung-gu, Yongin-si, Gyeonggi-do 17104, Korea.
| | - Deok Chun Yang
- Department of Oriental Medicinal Biotechnology, College of Life Science, Kyung Hee University, 1 Seocheon-dong, Giheung-gu, Yongin-si, Gyeonggi-do 17104, Korea.
- Graduate School of Biotechnology, College of Life Science, Kyung Hee University, 1 Seocheon-dong, Giheung-gu, Yongin-si, Gyeonggi-do 17104, Korea.
| |
Collapse
|
3
|
Lee DY, Jeong YT, Jeong SC, Lee MK, Min JW, Lee JW, Kim GS, Lee SE, Ahn YS, Kang HC, Kim JH. Melanin Biosynthesis Inhibition Effects of Ginsenoside Rb2 Isolated from Panax ginseng Berry. J Microbiol Biotechnol 2016; 25:2011-5. [PMID: 26437949 DOI: 10.4014/jmb.1505.05069] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [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: 11/01/2022]
Abstract
Ginsenoside Rb2 (Gin-Rb2) was purified from the fruit extract of Panax ginseng. Its chemical structure was measured by spectroscopic analysis, including HR-FAB-MS, (1)H-NMR, and IR spectroscopy. Gin-Rb2 decreased potent melanogenesis in melan-a cells, with 23.4% at 80 μM without cytotoxicity. Gin-Rb2 also decreased tyrosinase and MITF protein expression in melan-a cells. Furthermore, Gin-Rb2 presented inhibition of the body pigmentation in the zebrafish in vivo system and reduced melanin contents and tyrosinase activity. These results show that Gin-Rb2 isolated from P. ginseng may be an effective skin-whitening agent via the in vitro and in vivo systems.
Collapse
Affiliation(s)
- Dae Young Lee
- Department of Herbal Crop Research, National Institute of Horticultural and Herbal Science, RDA, Eumseong 27709, Republic of Korea
| | - Yong Tae Jeong
- HK BIO, Business Incubator, Daegu Haany University, Gyeongsan, Gyeongbuk 38578, Republic of Korea
| | - Sang Chul Jeong
- Freshwater Bioresources Utilization Division, Nakdonggang National Institute of Biological Resources, SangJu-si 37242, Republic of Korea
| | - Mi Kyoung Lee
- Cancer Preventive Material Development Research Center, College of Oriental Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Jin Woo Min
- Research & Development Center, GFC Co., Ltd., Suwon 16690, Republic of Korea
| | - Jae Won Lee
- Department of Herbal Crop Research, National Institute of Horticultural and Herbal Science, RDA, Eumseong 27709, Republic of Korea
| | - Geum Soog Kim
- Department of Herbal Crop Research, National Institute of Horticultural and Herbal Science, RDA, Eumseong 27709, Republic of Korea
| | - Seung Eun Lee
- Department of Herbal Crop Research, National Institute of Horticultural and Herbal Science, RDA, Eumseong 27709, Republic of Korea
| | - Young Sup Ahn
- Department of Herbal Crop Research, National Institute of Horticultural and Herbal Science, RDA, Eumseong 27709, Republic of Korea
| | - Hee Cheol Kang
- Research & Development Center, GFC Co., Ltd., Suwon 16690, Republic of Korea
| | - Jin Hee Kim
- College of Herbal Bio-industry, Daegu Haany University, Gyeongsan 42158, Republic of Korea
| |
Collapse
|
4
|
Lee ES, Jung SY, Kim JY, Kim JJ, Yoo TK, Kim YG, Lee KS, Lee ES, Kim EK, Min JW, Han W, Noh DY, Moon HG. Identifying the potential long-term survivors among breast cancer patients with distant metastasis. Ann Oncol 2016; 27:828-33. [PMID: 26823524 DOI: 10.1093/annonc/mdw036] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [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: 08/30/2015] [Accepted: 01/15/2016] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND We aimed to develop a prediction model to identify long-term survivors after developing distant metastasis from breast cancer. PATIENTS AND METHODS From the institution's database, we collected data of 547 patients who developed distant metastasis during their follow-ups. We developed a model that predicts the post-metastasis overall survival (PMOS) based on the clinicopathologic factors of the primary tumors and the characteristics of the distant metastasis. For validation, the survival data of 254 patients from four independent institutions were used. RESULTS The median duration of the PMOS was 31.0 months. The characteristics of the initial primary tumor, such as tumor stage, hormone receptor status, and Ki-67 expression level, and the characteristics of the distant metastasis presentation including the duration of disease-free interval, the site of metastasis, and the presence of metastasis-related symptoms were independent prognostic factors determining the PMOS. The association between tumor stage and the PMOS was only seen in tumors with early relapses. The PMOS score, which was developed based on the above six factors, successfully identified patients with superior survival after metastasis. The median PMOS for patients with a PMOS score of <2 and for patients with a PMOS score of >5 were 71.0 and 12 months, respectively. The clinical significance of the PMOS score was further validated using independent multicenter datasets. CONCLUSIONS We have developed a novel prediction model that can classify breast cancer patients with distant metastasis according to their survival after metastasis. Our model can be a valuable tool to identify long-term survivors who can be potential candidates for more intensive multidisciplinary approaches. Furthermore, our model can provide a more reliable survival information for both physicians and patients during their informed decision-making process.
Collapse
Affiliation(s)
- E S Lee
- Department of Surgery, Seoul National University College of Medicine, Laboratory of Breast Cancer Biology, Cancer Research Institute, Seoul National University College of Medicine, Seoul
| | - S Y Jung
- Center for Breast Cancer, National Cancer Center, Goyang
| | - J Y Kim
- Department of Surgery, College of Medicine, Gyeongsang National University, Jinju
| | - J J Kim
- Department of Surgery, Seoul National University College of Medicine, Laboratory of Breast Cancer Biology, Cancer Research Institute, Seoul National University College of Medicine, Seoul
| | - T K Yoo
- Department of Surgery, Seoul National University College of Medicine, Laboratory of Breast Cancer Biology, Cancer Research Institute, Seoul National University College of Medicine, Seoul
| | - Y G Kim
- Department of Surgery, Seoul National University College of Medicine, Laboratory of Breast Cancer Biology, Cancer Research Institute, Seoul National University College of Medicine, Seoul
| | - K S Lee
- Center for Breast Cancer, National Cancer Center, Goyang
| | - E S Lee
- Center for Breast Cancer, National Cancer Center, Goyang
| | - E K Kim
- Department of Surgery, Breast Cancer Center, Seoul National University Bundang Hospital, Seongnam
| | - J W Min
- Department of Surgery, Dankook University College of Medicine, Cheonan, Korea
| | - W Han
- Department of Surgery, Seoul National University College of Medicine, Laboratory of Breast Cancer Biology, Cancer Research Institute, Seoul National University College of Medicine, Seoul
| | - D Y Noh
- Department of Surgery, Seoul National University College of Medicine, Laboratory of Breast Cancer Biology, Cancer Research Institute, Seoul National University College of Medicine, Seoul
| | - H G Moon
- Department of Surgery, Seoul National University College of Medicine, Laboratory of Breast Cancer Biology, Cancer Research Institute, Seoul National University College of Medicine, Seoul
| |
Collapse
|
5
|
Mathiyalagan R, Subramaniyam S, Kim YJ, Natarajan S, Min JW, Kim SY, Yang DC. Synthesis and pharmacokinetic characterization of a pH-sensitive polyethylene glycol ginsenoside CK (PEG-CK) conjugate. Biosci Biotechnol Biochem 2014; 78:466-8. [PMID: 25036835 DOI: 10.1080/09168451.2014.885827] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [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
The ginsenosides in Panax ginseng have vast structural and pharmacological efficacies. We covalently conjugated polyethylene glycol on the surface of CK (PEG-CK) through an acid-labile ester-linkage that showed increased solubility of CK. HPLC analysis showed that the release of CK was enhanced at acidic pH 5, whereas it was dramatically decreased at physiological pH 7.4. This might enhance the efficacy of CK.
Collapse
Affiliation(s)
- Ramya Mathiyalagan
- a Graduate School of Biotechnology and Ginseng Bank, College of Life Sciences, Kyung Hee University , Yongin , Republic of Korea
| | | | | | | | | | | | | |
Collapse
|
6
|
Jin Y, Kim YJ, Hoang VA, Young Jung S, Nguyen NL, Woo Min J, Wang C, Yang DC. Flavobacterium panaciterrae sp. nov., a β-glucosidase producing bacterium with ginsenoside-converting activity isolated from the soil of a ginseng field. J GEN APPL MICROBIOL 2014; 60:59-64. [DOI: 10.2323/jgam.60.59] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
7
|
Nguyen NL, Kim YJ, Hoang VA, Min JW, Liang ZQ, Yang DC. Bacillus ginsengisoli sp. nov., isolated from soil of a ginseng field. Int J Syst Evol Microbiol 2013; 63:855-860. [DOI: 10.1099/ijs.0.031740-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [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
A novel bacterial strain DCY53T was isolated from a soil sample from a ginseng field and was characterized using a polyphasic approach. Cells were Gram-reaction-positive, rod-shaped, endospore-forming and motile with flagella. The strain was aerobic, catalase- and oxidase-positive, optimum growth temperature and pH were 30–37 °C and 6.0–7.5, respectively. On the basis of 16S rRNA gene sequence analysis, strain DCY53T was shown to belong to the genus
Bacillus
and the closest phylogenetic relatives were
Bacillus pocheonensis
KCTC 13943T (98.3 %),
Bacillus bataviensis
LMG 21833T (98.0 %),
Bacillus soli
LMG 21838T (97.9 %),
Bacillus drentensis
LMG 21831T (97.8 %),
Bacillus niacini
DSM 2923T (97.8 %),
Bacillus novalis
LMG 21837T (97.7 %),
Bacillus vireti
LMG 21834T (97.6 %) and
Bacillus fumarioli
LMG 17489T (97.3 %). The DNA G+C content was 43.6 mol% and the predominant respiratory quinone was MK-7. The major fatty acids were iso-C14 : 0, iso-C15 : 0, iso-C16 : 0 and anteiso-C15 : 0. The DNA–DNA relatedness with closest relatives was below 55 %. The results of the genotypic analysis in combination with chemotaxonomic and physiological data demonstrated that DCY53T represented a novel species within the genus
Bacillus
, for which we propose the name Bacillus ginsengisoli. The type strain is DCY53T ( = KCTC 13945T = JCM 17335T).
Collapse
Affiliation(s)
- Ngoc-Lan Nguyen
- 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
| | - Van-An Hoang
- 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
| | - Jin Woo Min
- 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
| | - Zhi-qi Liang
- 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
|
8
|
Min JW, Kong KA, Park BH, Hong JH, Park EA, Cho SJ, Ha EH, Park H. Effect of postnatal catch-up growth on blood pressure in children at 3 years of age. J Hum Hypertens 2007; 21:868-74. [PMID: 17476289 DOI: 10.1038/sj.jhh.1002215] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [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: 12/25/2022]
Abstract
Size at birth and early postnatal growth rates appear to be important determinants of cardiovascular diseases. We examined whether intrauterine growth restriction or the subsequent catch-up postnatal weight gain leads to higher blood pressure in early life to confirm that size at birth and early postnatal growth rates appear to be important determinants of blood pressure changes in early life. Of 407 children born between December 2001 and November 2002 in hospital based-birth cohorts, 102 were followed up at 3 years of age (24.2%) at Ewha Womans University Hospital in Seoul, Korea. At 3 years of age, those who had a low birth weight still belonged in the lower-weight group than the others. The subjects' systolic blood pressure was correlated with their current weight (r=0.41) and weight gain (r=0.39), but not with their birth weight. Those with a higher current weight and higher weight gain based on birth weight (conditional weight gain) had the highest blood pressure. Systolic blood pressure increased by 0.2 mm Hg for every 100-g increase in weight at 3 years and, independently, by 1.5 mm Hg for every 100-unit increase in conditional weight gain. This study suggests that birth weight is not directly associated with blood pressure, but accelerated growth, which occurs mostly in those born with a low birth weight, seems to affect blood pressure in early life.
Collapse
Affiliation(s)
- J W Min
- Department of Preventive Medicine, School of Medicine, Ewha Womans University, Seoul, South Korea
| | | | | | | | | | | | | | | |
Collapse
|
9
|
Min JW, Moon A, Lubben JE. Determinants of psychological distress over time among older Korean immigrants and Non-Hispanic White elders: evidence from a two-wave panel study. Aging Ment Health 2005; 9:210-22. [PMID: 16019275 DOI: 10.1080/13607860500090011] [Citation(s) in RCA: 85] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
The purpose of this study is to examine racial/ethnic differences in the change of psychological distress as measured by CES-D over time and its associated factors between older Korean immigrants and non-Hispanic White elders, based on a social stress perspective. Data come from a two-wave panel survey of 172 older Korean immigrants and 157 non-Hispanic White elders, with a follow-up period of 12 to 15 months. The sample was drawn from a three-stage probability sampling method. Ordinary least square regressions in a hierarchical process and change score method were used to analyze the two-wave panel data. Older Korean immigrants reported higher levels of psychological distress than the non-Hispanic White elderly at both Time 1 and Time 2. Changes in self-assessed health status and functional limitations were significantly associated with change in psychological distress for both ethnic groups. Increased social support significantly decreased psychological distress at Time 2, for older Korean immigrants only. This study discusses practice and policy implications for service and interventions for older immigrants to assist their adjustment to a host society.
Collapse
Affiliation(s)
- J W Min
- School of Social Work, San Diego State University, San Diego, CA 92182, USA.
| | | | | |
Collapse
|