1
|
Park HH, Kwon HS, Lee KY, Kim YE, Son JW, Choi NY, Han MH, Park DW, Kim S, Koh SH. GV1001 reduces neurodegeneration and prolongs lifespan in 3xTg-AD mouse model through anti-aging effects. Aging (Albany NY) 2024; 16:1983-2004. [PMID: 38301041 PMCID: PMC10911355 DOI: 10.18632/aging.205489] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 01/02/2024] [Indexed: 02/03/2024]
Abstract
GV1001, which mimics the activity of human telomerase reverse transcriptase, protects neural cells from amyloid beta (Aβ) toxicity and other stressors through extra-telomeric function, as noted in our prior in vitro studies. As per a recent phase II clinical trial, it improves cognitive function in patients with moderate to severe dementia. However, the underlying protective mechanisms remain unclear. This study aimed to investigate the effects of GV1001 on neurodegeneration, senescence, and survival in triple transgenic Alzheimer's disease (3xTg-AD) mice. GV1001 (1 mg/kg) was subcutaneously injected into old 3xTg-AD mice thrice a week until the endpoint for sacrifice, and survival was analysed. Magnetic resonance imaging (MRI) and Prussian blue staining (PBS) were performed to evaluate entry of GV1001 entrance into the brain. Diverse molecular studies were performed to investigate the effect of GV1001 on neurodegeneration and cellular senescence in AD model mice, with a particular focus on BACE, amyloid beta1-42 (Aβ1-42), phosphorylated tau, volume of dentate gyrus, β-galactosidase positive cells, telomere length, telomerase activity, and ageing-associated proteins. GV1001 crossed the blood-brain barrier, as confirmed by assessing the status of ferrocenecarboxylic acid-conjugated GV1001 using magnetic resonance imaging and PBS. GV1001 increased the survival of 3xTg-AD mice. It decreased BACE and Aβ1-42 levels, neurodegeneration (i.e., reduced CA1, CA3 and dentate gyrus volume, decreased levels of senescence-associated β-galactosidase positive cells, and increased telomere length and telomerase activity), and levels of ageing-associated proteins. We suggest that GV1001 exerts anti-ageing effects in 3xTg-AD mice by reducing neurodegeneration and senescence, which contributes to improved survival.
Collapse
Affiliation(s)
- Hyun-Hee Park
- Department of Neurology, Hanyang University Guri Hospital, Gyeongchun-ro, Guri-si, Gyeonggi-do 11923, Korea
| | - Hyuk Sung Kwon
- Department of Neurology, Hanyang University Guri Hospital, Gyeongchun-ro, Guri-si, Gyeonggi-do 11923, Korea
| | - Kyu-Yong Lee
- Department of Neurology, Hanyang University Guri Hospital, Gyeongchun-ro, Guri-si, Gyeonggi-do 11923, Korea
| | - Ye Eun Kim
- Department of Neurology, Hanyang University Guri Hospital, Gyeongchun-ro, Guri-si, Gyeonggi-do 11923, Korea
| | - Jeong-Woo Son
- Department of Neurology, Hanyang University Guri Hospital, Gyeongchun-ro, Guri-si, Gyeonggi-do 11923, Korea
| | - Na-Young Choi
- Department of Neurology, Hanyang University Guri Hospital, Gyeongchun-ro, Guri-si, Gyeonggi-do 11923, Korea
| | - Myung-Hoon Han
- Department of Neurosurgery, Hanyang University Guri Hospital, Gyeongchun-ro, Guri-si, Gyeonggi-do 11923, Korea
| | - Dong Woo Park
- Department of Radiology, Hanyang University Guri Hospital, Gyeongchun-ro, Guri-si, Gyeonggi-do 11923, Korea
| | | | - Seong-Ho Koh
- Department of Neurology, Hanyang University Guri Hospital, Gyeongchun-ro, Guri-si, Gyeonggi-do 11923, Korea
- Department of Translational Medicine, Hanyang University Graduate School of Biomedical Science and Engineering, Seoul 04763, Korea
| |
Collapse
|
2
|
Kwon HS, Kim JY, Koh SH, Choi SH, Lee EH, Jeong JH, Jang JW, Park KW, Kim EJ, Hong JY, Yoon SJ, Yoon B, Park HH, Han MH. Predicting cognitive stage transition using p-tau181, Centiloid, and other measures. Alzheimers Dement 2023; 19:4641-4650. [PMID: 36988152 DOI: 10.1002/alz.13054] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 02/03/2023] [Accepted: 02/21/2023] [Indexed: 03/30/2023]
Abstract
BACKGROUND A combination of plasma phospho-tau (p-tau), amyloid beta (Aβ)-positron emission tomography (PET), brain magnetic resonance imaging, cognitive function tests, and other biomarkers might predict future cognitive decline. This study aimed to investigate the efficacy of combining these biomarkers in predicting future cognitive stage transitions within 3 years. METHODS Among the participants in the Korean Brain Aging Study for the Early Diagnosis and Prediction of Alzheimer's Disease (KBASE-V) study, 49 mild cognitive impairment (MCI) and 113 cognitively unimpaired (CU) participants with Aβ-PET and brain imaging data were analyzed. RESULTS Older age, increased plasma p-tau181, Aβ-PET positivity, and decreased semantic fluency were independently associated with cognitive stage transitions. Combining age, p-tau181, the Centiloid scale, semantic fluency, and hippocampal volume produced high predictive value in predicting future cognitive stage transition (area under the curve = 0.879). CONCLUSIONS Plasma p-tau181 and Centiloid scale alone or in combination with other biomarkers, might predict future cognitive stage transition in non-dementia patients. HIGHLIGHTS -Plasma p-tau181 and Centiloid scale might predict future cognitive stage transition. -Combining them or adding other biomarkers increased the predictive value. -Factors that independently associated with cognitive stage transition were demonstrated.
Collapse
Affiliation(s)
- Hyuk Sung Kwon
- Department of Neurology, Hanyang University Guri Hospital, Hanyang University College of Medicine, Guri, Republic of Korea
| | - Ji Young Kim
- Department of Nuclear Medicine, Hanyang University Guri Hospital, Hanyang University College of Medicine, Guri, Republic of Korea
| | - Seong-Ho Koh
- Department of Neurology, Hanyang University Guri Hospital, Hanyang University College of Medicine, Guri, Republic of Korea
| | - Seong Hye Choi
- Department of Neurology, Inha University College of Medicine, Incheon, Republic of Korea
| | - Eun-Hye Lee
- Department of Neurology, Hanyang University Guri Hospital, Hanyang University College of Medicine, Guri, Republic of Korea
| | - Jee Hyang Jeong
- Department of Neurology, Ewha Womans University School of Medicine, Seoul, Republic of Korea
| | - Jae-Won Jang
- Department of Neurology, Kangwon National University School of Medicine, Chuncheon, Republic of Korea
| | - Kyung Won Park
- Department of Neurology, Dong-A Medical Center, Dong-A University College of Medicine, Busan, Republic of Korea
| | - Eun-Joo Kim
- Department of Neurology, Pusan National University Hospital, Pusan National University School of Medicine and Medical Research Institute, Busan, Republic of Korea
| | - Jin Yong Hong
- Department of Neurology, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea
| | - Soo Jin Yoon
- Department of Neurology, Eulji University Hospital, Eulji University School of Medicine, Daejeon, Republic of Korea
| | - Bora Yoon
- Department of Neurology, Konyang University College of Medicine, Daejeon, Republic of Korea
| | - Hyun-Hee Park
- Department of Neurology, Hanyang University Guri Hospital, Hanyang University College of Medicine, Guri, Republic of Korea
| | - Myung Hoon Han
- Department of Neurosurgery, Hanyang University Guri Hospital, Hanyang University College of Medicine, Guri, Republic of Korea
| |
Collapse
|
3
|
Han MH, Lee EH, Park HH, Choi SH, Koh SH. Relationship between telomere shortening and early subjective depressive symptoms and cognitive complaints in older adults. Aging (Albany NY) 2023; 15:914-931. [PMID: 36805537 PMCID: PMC10008503 DOI: 10.18632/aging.204533] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 02/13/2023] [Indexed: 02/19/2023]
Abstract
Telomere length (TL) has been reported to be associated with depression and cognitive impairment in elderly. Early detection of depression and cognitive impairment is important to delay disease progression. Therefore, we aimed to identify whether TL is associated with early subjective depressive symptoms and cognitive complaints among healthy elderly subjects. This study was a multicenter, outcome assessor-blinded, 24-week, randomized controlled trial (RCT). Measurement of questionnaire and physical activity scores and blood sample analyses were performed at baseline and after six months of follow-up in all study participants. Linear regression analyses were performed to identify whether early subjective depressive symptoms, cognitive complaints, and several blood biomarkers are associated with TL. Altogether, 137 relatively healthy elderly individuals (60-79 years old) were enrolled in this prospective RCT. We observed an approximate decrease of 0.06 and 0.11-0.14 kbps of TL per one point increase in the geriatric depression scale and cognitive complaint interview scores, respectively, at baseline and after six months of follow-up. We also found an approximate decrease of 0.08-0.09 kbps of TL per one point increase in interleukin (IL)-6 levels at baseline and after six months of follow-up. Our study showed that both early subjective depressive symptoms and cognitive complaints were associated with a relatively shorter TL in relatively healthy elderly individuals. In addition, based on our findings, we believe that IL-6 plays an important role in the relationship between shortening TL and early subjective depressive symptoms and cognitive complaints.
Collapse
Affiliation(s)
- Myung-Hoon Han
- Department of Neurosurgery, Hanyang University Guri Hospital, Guri 11923, South Korea
| | - Eun-Hye Lee
- Department of Neurology, Hanyang University Guri Hospital, Guri 11923, South Korea
| | - Hyun-Hee Park
- Department of Neurology, Hanyang University Guri Hospital, Guri 11923, South Korea
| | - Seong Hye Choi
- Department of Neurology, Inha University College of Medicine, Incheon 22332, South Korea
| | - Seong-Ho Koh
- Department of Neurology, Hanyang University Guri Hospital, Guri 11923, South Korea
- Department of Translational Medicine, Hanyang University Graduate School of Biomedical Science and Engineering, Seoul 04763, South Korea
| |
Collapse
|
4
|
Kim J, Jeon SG, Jeong HR, Park H, Kim JI, Hoe HS. L-Type Ca 2+ Channel Inhibition Rescues the LPS-Induced Neuroinflammatory Response and Impairments in Spatial Memory and Dendritic Spine Formation. Int J Mol Sci 2022; 23:13606. [PMID: 36362394 PMCID: PMC9655622 DOI: 10.3390/ijms232113606] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 10/26/2022] [Accepted: 11/03/2022] [Indexed: 08/11/2023] Open
Abstract
Ca2+ signaling is implicated in the transition between microglial surveillance and activation. Several L-type Ca2+ channel blockers (CCBs) have been shown to ameliorate neuroinflammation by modulating microglial activity. In this study, we examined the effects of the L-type CCB felodipine on LPS-mediated proinflammatory responses. We found that felodipine treatment significantly diminished LPS-evoked proinflammatory cytokine levels in BV2 microglial cells in an L-type Ca2+ channel-dependent manner. In addition, felodipine leads to the inhibition of TLR4/AKT/STAT3 signaling in BV2 microglial cells. We further examined the effects of felodipine on LPS-stimulated neuroinflammation in vivo and found that daily administration (3 or 7 days, i.p.) significantly reduced LPS-mediated gliosis and COX-2 and IL-1β levels in C57BL/6 (wild-type) mice. Moreover, felodipine administration significantly reduced chronic neuroinflammation-induced spatial memory impairment, dendritic spine number, and microgliosis in C57BL/6 mice. Taken together, our results suggest that the L-type CCB felodipine could be repurposed for the treatment of neuroinflammation/cognitive function-associated diseases.
Collapse
Affiliation(s)
- Jieun Kim
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu 41062, Korea
| | - Seong Gak Jeon
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu 41062, Korea
| | - Ha-Ram Jeong
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu 41062, Korea
| | - HyunHee Park
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu 41062, Korea
| | - Jae-Ick Kim
- Department of Biological Sciences, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Korea
| | - Hyang-Sook Hoe
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu 41062, Korea
- Department of Brain and Cognitive Science, Daegu Gyeongbuk Institute of Science & Technology (DGIST), 333, Techno Jungang-Daero, Hyeonpung-eup, Dalseong-gun, Daegu 42988, Korea
| |
Collapse
|
5
|
Jin JH, Kwon HS, Choi SH, Koh SH, Lee EH, Jeong JH, Jang JW, Park KW, Kim EJ, Kim HJ, Hong JY, Yoon SJ, Yoon B, Park HH, Ha J, Park JE, Han MH. Association between sleep parameters and longitudinal shortening of telomere length. Aging (Albany NY) 2022; 14:2930-2944. [PMID: 35366243 PMCID: PMC9037260 DOI: 10.18632/aging.203993] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 03/24/2022] [Indexed: 11/25/2022]
Abstract
Background: The relationship between sleep parameters and longitudinal shortening of telomere length is unclear. This study aimed to investigate the relationship between sleep parameters and the shortening of leukocyte telomere length (LTL) over a year. Methods: Among the participants in the validation cohort of the Korea Brain Aging Study for the Early Diagnosis and Prediction of Alzheimer’s Disease, participants who measured both baseline and follow-up (two years later) of LTL were analyzed. They were dichotomized according to the degree of LTL attrition over two years. Clinical characteristics were compared between the faster and slower LTL shortening groups (cut-off points: −0.710 kbp, n = 119 each). Multivariable logistic regression analyses were performed to determine independent relationships between faster shortening of LTL length and sleep parameters. Results: A total of 238 participants, aged 55–88 years, were included. Participants with faster LTL shortening had a shorter duration of sleep (P = 0.013) and longer sleep latency (P = 0.007). Among the components of the PSQI, subjective measures of sleep quality, sleep latency, sleep duration, and sleep efficiency were significantly worse in participants with faster LTL shortening. Multivariate logistic regression analysis showed that sleep duration (per hour, OR = 0.831, 95% CI = 0.698–0.989), sleep latency (per minute, OR = 1.013, 95% CI = 1.002–1.024), global PSQI score (OR = 1.134, 95% CI = 1.040–1.236), shortest sleep duration (OR = 5.173, 95% CI = 1.563–17.126), and lowest sleep efficiency (OR = 7.351, 95% CI = 1.943–27.946) were independently associated with faster LTL shortening. Conclusions: Poor sleep quality, specifically short sleep duration, long sleep latency, and low sleep efficiency were associated with faster longitudinal shortening of LTL.
Collapse
Affiliation(s)
- Jeong-Hwa Jin
- Department of Neurology, Hanyang University College of Medicine, Guri, Republic of Korea
| | - Hyuk Sung Kwon
- Department of Neurology, Hanyang University College of Medicine, Guri, Republic of Korea
| | - Seong Hye Choi
- Department of Neurology, Inha University School of Medicine, Incheon, Republic of Korea
| | - Seong-Ho Koh
- Department of Neurology, Hanyang University College of Medicine, Guri, Republic of Korea
| | - Eun-Hye Lee
- Department of Neurology, Hanyang University College of Medicine, Guri, Republic of Korea
| | - Jee Hyang Jeong
- Department of Neurology, Ewha Womans University School of Medicine, Seoul, Republic of Korea
| | - Jae-Won Jang
- Department of Neurology, Kangwon National University School of Medicine, Chuncheon, Republic of Korea
| | - Kyung Won Park
- Department of Neurology, Dong-A Medical Center, Dong-A University College of Medicine, Busan, Republic of Korea
| | - Eun-Joo Kim
- Department of Neurology, Pusan National University Hospital, Pusan National University School of Medicine and Medical Research Institute, Busan, Republic of Korea
| | - Hee Jin Kim
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Jin Yong Hong
- Department of Neurology, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea
| | - Soo Jin Yoon
- Department of Neurology, Eulji University Hospital, Eulji University School of Medicine, Daejeon, Republic of Korea
| | - Bora Yoon
- Department of Neurology, Konyang University College of Medicine, Daejeon, Republic of Korea
| | - Hyun-Hee Park
- Department of Neurology, Hanyang University College of Medicine, Guri, Republic of Korea
| | - Jungsoon Ha
- Department of Neurology, Hanyang University College of Medicine, Guri, Republic of Korea.,GemVax & Kael Co. Ltd., Seongnam, Republic of Korea
| | - Jong Eun Park
- Department of Laboratory Medicine, Hanyang University Guri Hospital, Hanyang University College of Medicine, Guri, Republic of Korea
| | - Myung Hoon Han
- Department of Neurosurgery, Hanyang University Guri Hospital, Hanyang University College of Medicine, Guri, Republic of Korea
| |
Collapse
|
6
|
Lee EH, Kwon HS, Koh SH, Choi SH, Jin JH, Jeong JH, Jang JW, Park KW, Kim EJ, Kim HJ, Hong JY, Yoon SJ, Yoon B, Kang JH, Lee JM, Park HH, Ha J. Serum neurofilament light chain level as a predictor of cognitive stage transition. Alzheimers Res Ther 2022; 14:6. [PMID: 34996525 PMCID: PMC8742445 DOI: 10.1186/s13195-021-00953-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [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: 02/08/2021] [Accepted: 12/14/2021] [Indexed: 12/13/2022]
Abstract
BACKGROUND Neurofilament light chain (NFL) level has been suggested as a blood-based biomarker for neurodegeneration in dementia. However, the association between baseline NFL levels and cognitive stage transition or cortical thickness is unclear. This study aimed to investigate whether baseline NFL levels are associated with cognitive stage transition or cortical thickness in mild cognitive impairment (MCI) and cognitively unimpaired (CU) participants. METHODS This study analyzed data on participants from the independent validation cohort of the Korea Brain Aging Study for the Early Diagnosis and Prediction of Alzheimer's disease (KBASE-V) study. Among the participants of KBASE-V study, 53 MCI and 146 CU participants who were followed up for ≥ 2 years and had data on the serum NFL levels were eligible for inclusion in this study. Participants were classified into three groups according to baseline serum NFL levels of low, middle, or high. RESULTS The Kaplan-Meier analysis showed association between the serum NFL tertiles and risk of cognitive stage transition in MCI (P = 0.002) and CU (P = 0.028) participants, analyzed separately. The same is true upon analysis of MCI and CU participants together (P < 0.001). In MCI participants, the highest serum NFL tertile and amyloid-beta positivity were independent predictors for cognitive stage transition after adjusting for covariates. For CU participants, only amyloid-beta positivity was identified to be an independent predictor. CONCLUSION The study shows that higher serum NFL tertile levels correlate with increased risk of cognitive stage transition in both MCI and CU participants. Serum NFL levels were negatively correlated with the mean cortical thickness of the whole-brain and specific brain regions.
Collapse
Affiliation(s)
- Eun-Hye Lee
- Department of Neurology, Hanyang University Guri Hospital, Hanyang University College of Medicine, 153 Gyeongchun-ro, Guri, 11923, Republic of Korea
| | - Hyuk Sung Kwon
- Department of Neurology, Hanyang University Guri Hospital, Hanyang University College of Medicine, 153 Gyeongchun-ro, Guri, 11923, Republic of Korea
| | - Seong-Ho Koh
- Department of Neurology, Hanyang University Guri Hospital, Hanyang University College of Medicine, 153 Gyeongchun-ro, Guri, 11923, Republic of Korea.
| | - Seong Hye Choi
- Department of Neurology, Inha University School of Medicine, 27 Inhang-ro, Jung-gu, Incheon, Republic of Korea.
| | - Jeong-Hwa Jin
- Department of Neurology, Hanyang University Guri Hospital, Hanyang University College of Medicine, 153 Gyeongchun-ro, Guri, 11923, Republic of Korea
| | - Jee Hyang Jeong
- Department of Neurology, Ewha Womans University School of Medicine, Seoul, Republic of Korea
| | - Jae-Won Jang
- Department of Neurology, Kangwon National University School of Medicine, Chuncheon, Republic of Korea
| | - Kyung Won Park
- Department of Neurology, Dong-A Medical Center, Dong-A University College of Medicine, Busan, Republic of Korea
| | - Eun-Joo Kim
- Department of Neurology, Pusan National University Hospital, Pusan National University School of Medicine and Medical Research Institute, Busan, Republic of Korea
| | - Hee Jin Kim
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Jin Yong Hong
- Department of Neurology, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea
| | - Soo Jin Yoon
- Department of Neurology, Eulji University Hospital, Eulji University School of Medicine, Daejeon, Republic of Korea
| | - Bora Yoon
- Department of Neurology, Konyang University College of Medicine, Daejeon, Republic of Korea
| | - Ju-Hee Kang
- Department of Pharmacology, Inha University School of Medicine, Incheon, Republic of Korea
| | - Jong-Min Lee
- Department of Biomedical Engineering, Hanyang University, Seoul, Republic of Korea
| | - Hyun-Hee Park
- Department of Neurology, Hanyang University Guri Hospital, Hanyang University College of Medicine, 153 Gyeongchun-ro, Guri, 11923, Republic of Korea
| | - Jungsoon Ha
- Department of Neurology, Hanyang University Guri Hospital, Hanyang University College of Medicine, 153 Gyeongchun-ro, Guri, 11923, Republic of Korea.,GemVax & Kael Co., Ltd., Seongnam, Republic of Korea
| |
Collapse
|
7
|
Kwon HS, Kim YE, Park HH, Son JW, Choi H, Lee YJ, Kim HY, Lee KY, Koh SH. Neuroprotective Effects of GV1001 in Animal Stroke Model and Neural Cells Subject to Oxygen-Glucose Deprivation/Reperfusion Injury. J Stroke 2021; 23:420-436. [PMID: 34649386 PMCID: PMC8521247 DOI: 10.5853/jos.2021.00626] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 06/16/2021] [Indexed: 12/04/2022] Open
Abstract
Background and Purpose Previous studies have revealed the diverse neuroprotective effects of GV1001. In this study, we investigated the effects of GV1001 on focal cerebral ischemia-reperfusion injury (IRI) in rats and oxygen-glucose deprivation/reoxygenation (OGD/R)-induced injury in neural stem cells (NSCs) and cortical neurons.
Methods Focal cerebral IRI was induced by transient middle cerebral artery occlusion (MCAO). Brain diffusion-weighted imaging (DWI) was performed 2 hours after occlusion, and a total of 37 rats were treated by reperfusion with GV1001 or saline 2 hours after occlusion. Fluid-attenuated inversion recovery (FLAIR) magnetic resonance imaging, immunohistochemistry, and neurobehavioral function analyses were performed. Additionally, OGD/R-injured NSCs and cortical neurons were treated with different GV1001 concentrations. Cell viability, proliferation, migration, and oxidative stress were determined by diverse molecular analyses.
Results In the stroke model, GV1001 protected neural cells against IRI. The most effective dose of GV1001 was 60 μM/kg. The infarct volume on FLAIR 48 hours after MCAO compared to lesion volume on DWI showed a significantly smaller ratio in the GV1001-treated group. GV1001-treated rats exhibited better behavioral functions than the saline-treated rats. Treatment with GV1001 increased the viability, proliferation, and migration of the OGD/R-injured NSCs. Free radicals were significantly restored by treatment with GV1001. These neuroprotective effects of GV1001 have also been demonstrated in OGD/R-injured cortical neurons. Conclusions The results suggest that GV1001 has neuroprotective effects against IRI in NSCs, cortical neurons, and the rat brain. These effects are mediated through the induction of cellular proliferation, mitochondrial stabilization, and anti-apoptotic, anti-aging, and antioxidant effects.
Collapse
Affiliation(s)
- Hyuk Sung Kwon
- Department of Neurology, Hanyang University Guri Hospital, Hangyang University College of Medicine, Guri, Korea
| | - Ye Eun Kim
- Department of Neurology, Hanyang University Guri Hospital, Hangyang University College of Medicine, Guri, Korea
| | - Hyun-Hee Park
- Department of Neurology, Hanyang University Guri Hospital, Hangyang University College of Medicine, Guri, Korea
| | - Jeong-Woo Son
- Department of Neurology, Hanyang University Guri Hospital, Hangyang University College of Medicine, Guri, Korea
| | - Hojin Choi
- Department of Neurology, Hanyang University Guri Hospital, Hangyang University College of Medicine, Guri, Korea
| | - Young Joo Lee
- Department of Neurology, Hanyang University Guri Hospital, Hangyang University College of Medicine, Guri, Korea
| | - Hyun Young Kim
- Department of Neurology, Hanyang University Seoul Hospital, Hanyang University College of Medicine, Seoul, Korea
| | - Kyu-Yong Lee
- Department of Neurology, Hanyang University Guri Hospital, Hangyang University College of Medicine, Guri, Korea
| | - Seong-Ho Koh
- Department of Neurology, Hanyang University Guri Hospital, Hangyang University College of Medicine, Guri, Korea.,Department of Translational Medicine, Hanyang University Graduate School of Biomedical Science & Engineering, Seoul, Korea
| |
Collapse
|
8
|
Kim EJ, Koh SH, Ha J, Na DL, Seo SW, Kim HJ, Park KW, Lee JH, Roh JH, Kwon JC, Yoon SJ, Jung NY, Jeong JH, Jang JW, Kim HJ, Park KH, Choi SH, Kim S, Park YH, Kim BC, Kim YE, Kwon HS, Park HH, Jin JH. Increased telomere length in patients with frontotemporal dementia syndrome. J Neurol Sci 2021; 428:117565. [PMID: 34311139 DOI: 10.1016/j.jns.2021.117565] [Citation(s) in RCA: 4] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2021] [Revised: 06/22/2021] [Accepted: 07/01/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND Telomeres are repetitive DNA sequences of TTAGGG at the ends of chromosomes. Many studies have shown that telomere shortening is associated with aging-related diseases, such as cardiovascular diseases, hypertension, diabetes, cancer, and various neurodegenerative diseases, including Alzheimer's disease, vascular dementia, Parkinson's disease, and dementia with Lewy bodies. However, changes in telomere length (TL) in patients with frontotemporal dementia (FTD) syndrome are unclear. Accordingly, in this study, we assessed TL in blood samples from patients with FTD syndrome. METHODS Absolute TL was measured in peripheral blood leukocytes from 53 patients with FTD syndromes (25 with behavioral variant FTD, 19 with semantic variant primary progressive aphasia [PPA], six with nonfluent/agrammatic variant PPA, and three with amyotrophic lateral sclerosis [ALS] plus) and 28 cognitively unimpaired (CU) controls using terminal restriction fragment analysis. RESULTS TL was significantly longer in the FTD group than in the CU group. All FTD subtypes had significantly longer TL than controls. There were no significant differences in TL among FTD syndromes. No significant correlations were found between TL and demographic factors in the FTD group. CONCLUSIONS Longer telomeres were associated with FTD syndrome, consistent with a recent report demonstrating that longer telomeres are related to ALS. Therefore, our results may support a shared biology between FTD and ALS. More studies with larger sample sizes are needed.
Collapse
Affiliation(s)
- Eun-Joo Kim
- Department of Neurology, Pusan National University Hospital, Pusan National University School of Medicine and Medical Research Institute, Busan, Republic of Korea
| | - Seong-Ho Koh
- Department of Neurology, Hanyang University College of Medicine, Gyeonggi-do, Republic of Korea.
| | - Jungsoon Ha
- Department of Neurology, Hanyang University College of Medicine, Gyeonggi-do, Republic of Korea; GemVax & Kael Co., Ltd, Gyeonggi-do, Republic of Korea
| | - Duk L Na
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Sang Won Seo
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Hee-Jin Kim
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Kyung Won Park
- Department of Neurology, Dong-A Medical Center, Dong-A University College of Medicine, Busan, Republic of Korea
| | - Jae-Hong Lee
- Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jee Hoon Roh
- Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jay C Kwon
- Department of Neurology, Changwon Fatima Hospital, Changwon, Republic of Korea
| | - Soo Jin Yoon
- Department of Neurology, Eulgi University Hospital, Daejeon, Republic of Korea
| | - Na-Yeon Jung
- Department of Neurology, Pusan National University Yangsan Hospital, Research Institute for Convergence of Biomedical Science and Technology, Busan, Republic of Korea
| | - Jee H Jeong
- Department of Neurology, Ewha Womans University Hospital, Seoul, Republic of Korea
| | - Jae-Won Jang
- Department of Neurology, Kangwon National University Hospital, Chuncheon, Republic of Korea
| | - Hee-Jin Kim
- Department of Neurology, Hanyang University College of Medicine, Seoul, Republic of Korea
| | - Kee Hyung Park
- Department of Neurology, Gachon University Gil Hospital, Incheon, Republic of Korea
| | - Seong Hye Choi
- Department of Neurology, Inha University School of Medicine, Incheon, Republic of Korea
| | - SangYun Kim
- Department of Neurology, Seoul National University College of Medicine and Clinical Neuroscience Center, Seoul National University Bundang Hospital, Gyeonggi-do, Republic of Korea
| | - Young Ho Park
- Department of Neurology, Seoul National University College of Medicine and Clinical Neuroscience Center, Seoul National University Bundang Hospital, Gyeonggi-do, Republic of Korea
| | - Byeong C Kim
- Department of Neurology, Chonnam National University Medical School, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Young-Eun Kim
- Department of Laboratory Medicine, Hanyang University College of Medicine, Seoul, Republic of Korea
| | - Hyuk Sung Kwon
- Department of Neurology, Hanyang University College of Medicine, Gyeonggi-do, Republic of Korea
| | - Hyun-Hee Park
- Department of Neurology, Hanyang University College of Medicine, Gyeonggi-do, Republic of Korea
| | - Jeong-Hwa Jin
- Department of Neurology, Hanyang University College of Medicine, Gyeonggi-do, Republic of Korea
| |
Collapse
|
9
|
Moon SY, Hong CH, Jeong JH, Park YK, Na HR, Song HS, Kim BC, Park KW, Park HK, Choi M, Lee SM, Chun BO, Koh SH, Park SA, Park HH, Jin JH, Lee EH, Kim SM, Han SM, Kim JS, Ha J, Choi SH. Facility-based and home-based multidomain interventions including cognitive training, exercise, diet, vascular risk management, and motivation for older adults: a randomized controlled feasibility trial. Aging (Albany NY) 2021; 13:15898-15916. [PMID: 34148030 PMCID: PMC8266338 DOI: 10.18632/aging.203213] [Citation(s) in RCA: 6] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Accepted: 06/01/2021] [Indexed: 12/03/2022]
Abstract
We aimed to evaluate the feasibility of multidomain intervention (MI) tailored to the Korean context. In an outcome assessor-blinded, randomized controlled trial, participants without dementia and with one or more modifiable dementia risk factors, aged 60-79 years, were randomly assigned to the facility-based MI (FMI; n=51), the home-based MI (HMI; n=51), or the control group receiving general health advice (n=50). The 24-week intervention comprised vascular risk management, cognitive training, social activity, physical exercise, nutrition guidance, and motivational enhancement. The FMI participants performed all intervention programs at a facility three times a week. The HMI participants performed some programs at a facility once every 1-2 weeks and performed others at home. The primary outcome was feasibility measured through retention, adherence, and at least no differences from the control group in the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS). In the FMI and HMI groups, the retention rates were 88.2% and 96.1%, and adherence to the intervention was 94.5% and 96.8%, respectively. The RBANS total scale index score improved significantly in the FMI (5.46 ± 7.50, P = 0.004) and HMI (5.50 ± 8.14, P = 0.004) groups compared to the control group (-0.74 ± 11.51). The FMI and HMI are feasible and there are indicators of efficacy.
Collapse
Affiliation(s)
- So Young Moon
- Department of Neurology, Ajou University School of Medicine, Suwon 16499, Republic of Korea
| | - Chang Hyung Hong
- Department of Psychiatry, Ajou University School of Medicine, Suwon 16499, Republic of Korea
| | - Jee Hyang Jeong
- Department of Neurology, Ewha Womans University School of Medicine, Seoul 07804, Republic of Korea
| | - Yoo Kyoung Park
- Department of Medical Nutrition, Graduate School of East-West Medical Nutrition, Kyung Hee University, Yongin 17104, Republic of Korea
| | - Hae Ri Na
- Department of Neurology, Bobath Memorial Hospital, Seongnam 13552, Republic of Korea
| | - Hong-Sun Song
- Department of Sports Sciences, Korea Institute of Sports Science, Seoul 01794, Republic of Korea
| | - Byeong C Kim
- Department of Neurology, Chonnam National University Medical School, Gwangju 61469, Republic of Korea
| | - Kyung Won Park
- Department of Neurology, Dong-A University College of Medicine, Busan 49201, Republic of Korea
| | - Hee Kyung Park
- Department of Neurology, Ewha Womans University School of Medicine, Seoul 07804, Republic of Korea
| | - Muncheong Choi
- Department of Physical Education, Kookmin University, Seoul 02707, Republic of Korea
| | - Sun Min Lee
- Department of Neurology, Ajou University School of Medicine, Suwon 16499, Republic of Korea
| | - Buong-O Chun
- Department of Sports Sciences, Korea Institute of Sports Science, Seoul 01794, Republic of Korea
| | - Seong-Ho Koh
- Department of Neurology, Hanyang University College of Medicine, Seoul 04763, Republic of Korea.,Department of Translational Medicine, Hanyang University Graduate School of Biomedical Science and Engineering, Seoul 04763, Republic of Korea
| | - Sun Ah Park
- Department of Neurology, Ajou University School of Medicine, Suwon 16499, Republic of Korea.,Lab for Neurodegenerative Dementia, Department of Anatomy, Ajou University School of Medicine, Suwon 16499, Republic of Korea.,Neuroscience Graduate Program, Department of Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon 16499, Republic of Korea
| | - Hyun-Hee Park
- Department of Neurology, Hanyang University College of Medicine, Seoul 04763, Republic of Korea
| | - Jeong-Hwa Jin
- Department of Neurology, Hanyang University College of Medicine, Seoul 04763, Republic of Korea
| | - Eun-Hye Lee
- Department of Neurology, Hanyang University College of Medicine, Seoul 04763, Republic of Korea
| | - Sue Min Kim
- Lab for Neurodegenerative Dementia, Department of Anatomy, Ajou University School of Medicine, Suwon 16499, Republic of Korea.,Neuroscience Graduate Program, Department of Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon 16499, Republic of Korea
| | - Song Mi Han
- Lab for Neurodegenerative Dementia, Department of Anatomy, Ajou University School of Medicine, Suwon 16499, Republic of Korea.,Neuroscience Graduate Program, Department of Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon 16499, Republic of Korea
| | - Jun Seok Kim
- Department of Biomedical Systems Engineering, Korea Polytechnics University, Gyeonggi 13122, Republic of Korea
| | - Jungsoon Ha
- Department of Neurology, Hanyang University College of Medicine, Seoul 04763, Republic of Korea
| | - Seong Hye Choi
- Department of Neurology, Inha University School of Medicine, Incheon 22332, Republic of Korea
| |
Collapse
|
10
|
Kwon HS, Ha J, Kim JY, Park HH, Lee EH, Choi H, Lee KY, Lee YJ, Koh SH. Telmisartan Inhibits the NLRP3 Inflammasome by Activating the PI3K Pathway in Neural Stem Cells Injured by Oxygen-Glucose Deprivation. Mol Neurobiol 2021; 58:1806-1818. [PMID: 33404978 DOI: 10.1007/s12035-020-02253-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2020] [Accepted: 12/08/2020] [Indexed: 01/01/2023]
Abstract
Angiotensin II receptor blockers (ARBs) have been shown to exert neuroprotective effects by suppressing inflammatory and apoptotic responses. In the present study, the effects of the ARB telmisartan on the NLRP3 inflammasome induced by oxygen-glucose deprivation (OGD) in neural stem cells (NSCs) were investigated, as well as their possible association with the activation of the PI3K pathway. Cultured NSCs were treated with different concentrations of telmisartan and subjected to various durations of OGD. Cell counting, lactate dehydrogenase, bromodeoxyuridine, and colony-forming unit assays were performed to measure cell viability and proliferation. In addition, the activity of intracellular signaling pathways associated with the PI3K pathway and NLRP3 inflammasome was evaluated. Telmisartan alone did not affect NSCs up to a concentration of 10 μM under normal conditions but showed toxicity at a concentration of 100 μM. Moreover, OGD reduced the viability of NSCs in a time-dependent manner. Nevertheless, treatment with telmisartan increased the viability and proliferation of OGD-injured NSCs. Furthermore, telmisartan promoted the expression of survival-related proteins and mRNA while inhibiting the expression of death-related proteins induced by OGD. In particular, telmisartan attenuated OGD-dependent expression of the NLRP3 inflammasome and its related signaling proteins. These beneficial effects of telmisartan were blocked by a PI3K inhibitor. Together, these results indicate that telmisartan attenuated the activation of the NLRP3 inflammasome by triggering the PI3K pathway, thereby contributing to neuroprotection.
Collapse
Affiliation(s)
- Hyuk Sung Kwon
- Department of Neurology, Hanyang University Guri Hospital, 153, Gyeongchun-ro, Guri, 11923, South Korea
| | - Jungsoon Ha
- Department of Neurology, Hanyang University Guri Hospital, 153, Gyeongchun-ro, Guri, 11923, South Korea
- GemVax & Kael Co., Ltd, Seongnam-si, Republic of Korea
| | - Ji Young Kim
- Department of Nuclear Medicine, College of Medicine, Hanyang University, Seoul, Republic of Korea
| | - Hyun-Hee Park
- Department of Neurology, Hanyang University Guri Hospital, 153, Gyeongchun-ro, Guri, 11923, South Korea
| | - Eun-Hye Lee
- Department of Neurology, Hanyang University Guri Hospital, 153, Gyeongchun-ro, Guri, 11923, South Korea
- Department of Translational Medicine, Hanyang University Graduate School of Biomedical Science & Engineering, Seoul, Republic of Korea
| | - Hojin Choi
- Department of Neurology, Hanyang University Guri Hospital, 153, Gyeongchun-ro, Guri, 11923, South Korea
| | - Kyu-Yong Lee
- Department of Neurology, Hanyang University Guri Hospital, 153, Gyeongchun-ro, Guri, 11923, South Korea
| | - Young Joo Lee
- Department of Neurology, Hanyang University Guri Hospital, 153, Gyeongchun-ro, Guri, 11923, South Korea
| | - Seong-Ho Koh
- Department of Neurology, Hanyang University Guri Hospital, 153, Gyeongchun-ro, Guri, 11923, South Korea.
- Department of Translational Medicine, Hanyang University Graduate School of Biomedical Science & Engineering, Seoul, Republic of Korea.
| |
Collapse
|
11
|
Lee H, Jeon SG, Kim J, Kang RJ, Kim S, Han K, Park H, Kim K, Sung YM, Nam HY, Koh YH, Song M, Suk K, Hoe H. Ibrutinib modulates Aβ/tau pathology, neuroinflammation, and cognitive function in mouse models of Alzheimer's disease. Aging Cell 2021; 20:e13332. [PMID: 33709472 PMCID: PMC7963331 DOI: 10.1111/acel.13332] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [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: 04/21/2020] [Revised: 12/23/2020] [Accepted: 02/09/2021] [Indexed: 12/14/2022] Open
Abstract
We previously demonstrated that ibrutinib modulates LPS‐induced neuroinflammation in vitro and in vivo, but its effects on the pathology of Alzheimer's disease (AD) and cognitive function have not been investigated. Here, we investigated the effects of ibrutinib in two mouse models of AD. In 5xFAD mice, ibrutinib injection significantly reduced Aβ plaque levels by promoting the non‐amyloidogenic pathway of APP cleavage, decreased Aβ‐induced neuroinflammatory responses, and significantly downregulated phosphorylation of tau by reducing levels of phosphorylated cyclin‐dependent kinase‐5 (p‐CDK5). Importantly, tau‐mediated neuroinflammation and tau phosphorylation were also alleviated by ibrutinib injection in PS19 mice. In 5xFAD mice, ibrutinib improved long‐term memory and dendritic spine number, whereas in PS19 mice, ibrutinib did not alter short‐ and long‐term memory but promoted dendritic spinogenesis. Interestingly, the induction of dendritic spinogenesis by ibrutinib was dependent on the phosphorylation of phosphoinositide 3‐kinase (PI3K). Overall, our results suggest that ibrutinib modulates AD‐associated pathology and cognitive function and may be a potential therapy for AD.
Collapse
Affiliation(s)
- Hyun‐ju Lee
- Department of Neural Development and Disease Korea Brain Research Institute (KBRI) Daegu Korea
| | - Seong Gak Jeon
- Department of Neural Development and Disease Korea Brain Research Institute (KBRI) Daegu Korea
| | - Jieun Kim
- Department of Neural Development and Disease Korea Brain Research Institute (KBRI) Daegu Korea
| | - Ri Jin Kang
- Department of Neural Development and Disease Korea Brain Research Institute (KBRI) Daegu Korea
| | - Seong‐Min Kim
- Department of Neural Development and Disease Korea Brain Research Institute (KBRI) Daegu Korea
- Medical Device Development Center Daegu‐Gyeongbuk Medical Innovation Foundation (DGMIF) Daegu Korea
| | - Kyung‐Min Han
- Department of Neural Development and Disease Korea Brain Research Institute (KBRI) Daegu Korea
| | - HyunHee Park
- Department of Neural Development and Disease Korea Brain Research Institute (KBRI) Daegu Korea
| | - Ki‐taek Kim
- Department of Life Sciences Yeungnam University Gyeongsan Korea
| | - You Me Sung
- Korea Mouse Phenotyping Center (KMPC) Seoul National University Seoul Korea
| | - Hye Yeon Nam
- Department of Neural Development and Disease Korea Brain Research Institute (KBRI) Daegu Korea
| | - Young Ho Koh
- Center for Biomedical Sciences Center for Infectious Diseases Division of Brain Disease Korea National Institute of Health Heungdeok‐gu Korea
| | - Minseok Song
- Department of Life Sciences Yeungnam University Gyeongsan Korea
| | - Kyoungho Suk
- Department of Pharmacology Brain Science & Engineering Institute School of Medicine Kyungpook National University Daegu Korea
| | - Hyang‐Sook Hoe
- Department of Neural Development and Disease Korea Brain Research Institute (KBRI) Daegu Korea
- Department of Brain and Cognitive Sciences Daegu Gyeongbuk Institute of Science & Technology Daegu Korea
| |
Collapse
|
12
|
Lee EH, Han MH, Ha J, Park HH, Koh SH, Choi SH, Lee JH. Relationship between telomere shortening and age in Korean individuals with mild cognitive impairment and Alzheimer's disease compared to that in healthy controls. Aging (Albany NY) 2020; 13:2089-2100. [PMID: 33323554 PMCID: PMC7880372 DOI: 10.18632/aging.202206] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 10/22/2020] [Indexed: 12/02/2022]
Abstract
Although telomere length (TL) is highly variable, a shorter TL indicate increased biological age. This multicenter study was conducted to identify the overall correlation between age and TL in Koreans and investigate the associations between age and TL in healthy individuals and patients with mild cognitive impairment (MCI) and Alzheimer’s disease (AD). TL was measured in peripheral leukocyte DNA. MCI and AD were diagnosed based on clinical examinations and amyloid deposition on positron emission tomography. This study enrolled 437 individuals. Multivariable linear analysis showed an overall approximate TL decrease of 37 bp per 1-year increase in age in all individuals (B=-0.037; P=0.002). There was no significant difference in the mean TL between healthy individuals and individuals with AD. Multivariable linear regression analysis showed that the mean rate of telomere shortening was 60 bp per year in individuals with AD (B=-0.060; P=0.006). There was a negative association between age and TL in our study. Our study results showed more significant telomere shortening per year in women than that in men. In addition, individuals with AD had greater telomere shortening every year than healthy individuals and individuals with MCI.
Collapse
Affiliation(s)
- Eun-Hye Lee
- Department of Neurology, Hanyang University Guri Hospital, Guri 11923, South Korea
| | - Myung-Hoon Han
- Department of Neurosurgery, Hanyang University Guri Hospital, Guri 11923, South Korea
| | - Jungsoon Ha
- Department of Neurology, Hanyang University Guri Hospital, Guri 11923, South Korea.,GemVax & Kael Co., Ltd, Seongnam 13461, South Korea
| | - Hyun-Hee Park
- Department of Neurology, Hanyang University Guri Hospital, Guri 11923, South Korea
| | - Seong-Ho Koh
- Department of Neurology, Hanyang University Guri Hospital, Guri 11923, South Korea.,Department of Translational Medicine, Hanyang University Graduate School of Biomedical Science and Engineering, Seoul 04763, South Korea
| | - Seong Hye Choi
- Department of Neurology, Inha University School of Medicine, Incheon 22332, South Korea
| | - Jae-Hong Lee
- Department of Neurology, University of Ulsan College of Medicine, Asan Medical Center, Seoul 05505, South Korea
| |
Collapse
|
13
|
Lee HJ, Woo H, Lee HE, Jeon H, Ryu KY, Nam JH, Jeon SG, Park H, Lee JS, Han KM, Lee SM, Kim J, Kang RJ, Lee YH, Kim JI, Hoe HS. The novel DYRK1A inhibitor KVN93 regulates cognitive function, amyloid-beta pathology, and neuroinflammation. Free Radic Biol Med 2020; 160:575-595. [PMID: 32896600 DOI: 10.1016/j.freeradbiomed.2020.08.030] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 07/27/2020] [Accepted: 08/31/2020] [Indexed: 02/08/2023]
Abstract
Regulating amyloid beta (Aβ) pathology and neuroinflammatory responses holds promise for the treatment of Alzheimer's disease (AD) and other neurodegenerative and/or neuroinflammation-related diseases. In this study, the effects of KVN93, an inhibitor of dual-specificity tyrosine phosphorylation-regulated kinase-1A (DYRK1A), on cognitive function and Aβ plaque levels and the underlying mechanism of action were evaluated in 5x FAD mice (a mouse model of AD). KVN93 treatment significantly improved long-term memory by enhancing dendritic synaptic function. In addition, KVN93 significantly reduced Aβ plaque levels in 5x FAD mice by regulating levels of the Aβ degradation enzymes neprilysin (NEP) and insulin-degrading enzyme (IDE). Moreover, Aβ-induced microglial and astrocyte activation were significantly suppressed in the KVN-treated 5xFAD mice. KVN93 altered neuroinflammation induced by LPS in microglial cells but not primary astrocytes by regulating TLR4/AKT/STAT3 signaling, and in wild-type mice injected with LPS, KVN93 treatment reduced microglial and astrocyte activation. Overall, these results suggest that the novel DYRK1A inhibitor KVN93 is a potential therapeutic drug for regulating cognitive/synaptic function, Aβ plaque load, and neuroinflammatory responses in the brain.
Collapse
Affiliation(s)
- Hyun-Ju Lee
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu, 41062, South Korea.
| | - Hanwoong Woo
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu, 41062, South Korea.
| | - Ha-Eun Lee
- School of Life Sciences, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, South Korea.
| | - Hyongjun Jeon
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu, 41062, South Korea.
| | - Ka-Young Ryu
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu, 41062, South Korea.
| | - Jin Han Nam
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu, 41062, South Korea.
| | - Seong Gak Jeon
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu, 41062, South Korea.
| | - HyunHee Park
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu, 41062, South Korea.
| | - Ji-Soo Lee
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu, 41062, South Korea.
| | - Kyung-Min Han
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu, 41062, South Korea.
| | - Sang Min Lee
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu, 41062, South Korea.
| | - Jeongyeon Kim
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu, 41062, South Korea.
| | - Ri Jin Kang
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu, 41062, South Korea.
| | - Young-Ho Lee
- Research Center of Bioconvergence Analysis, Korea Basic Science Institute (KBSI), Ochang, Cheongju, Chungbuk, 28119, South Korea; Bio-Analytical Science, University of Science and Technology (UST), Gajeong-ro, Yuseong-gu, Daejeon 34113, South Korea; Neurovascular Research Group, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu 41062, South Korea.
| | - Jae-Ick Kim
- School of Life Sciences, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, South Korea.
| | - Hyang-Sook Hoe
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu, 41062, South Korea; Department of Brain and Cognitive Sciences, Daegu Gyeongbuk Institute of Science & Technology, Daegu, 42988, South Korea.
| |
Collapse
|
14
|
Abstract
Alzheimer's disease (AD) is a highly prevalent neurodegenerative disease characterized by Aβ accumulation and tau hyperphosphorylation. Epidemiological evidence for a negative correlation between cancer and AD has led to the proposed use of tyrosine kinase inhibitors (TKIs) such as dasatinib and masitinib for AD, with reported beneficial effects in the AD brain. The TKI vatalanib inhibits angiogenesis by inhibiting vascular endothelial growth factor receptor (VEGFR). Although changes in VEGF and VEGFR have been documented in AD, the effect of vatalanib on AD pathology has not been investigated. In this study, the effects of vatalanib on tau phosphorylation and Aβ accumulation in 5xFAD mice, a model of AD, were evaluated by immunohistochemistry. Vatalanib administration significantly reduced tau phosphorylation at AT8 and AT100 by increasing p-GSK-3β (Ser9) in 5xFAD mice. In addition, vatalanib reduced the number and area of Aβ plaques in the cortex in 5xFAD mice. Our results suggest that vatalanib has potential as a regulator of AD pathology.
Collapse
Affiliation(s)
- Seong Gak Jeon
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu, 41062, Republic of Korea
| | - Hyun-Ju Lee
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu, 41062, Republic of Korea
| | - HyunHee Park
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu, 41062, Republic of Korea
| | - Kyung-Min Han
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu, 41062, Republic of Korea
| | - Hyang-Sook Hoe
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu, 41062, Republic of Korea.
| |
Collapse
|
15
|
Kim SH, Lee EH, Lee SC, Kim AR, Park HH, Son JW, Koh SH, Yoon MY. Development of peptide aptamers as alternatives for antibody in the detection of amyloid-beta 42 aggregates. Anal Biochem 2020; 609:113921. [PMID: 32828793 DOI: 10.1016/j.ab.2020.113921] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 08/13/2020] [Accepted: 08/15/2020] [Indexed: 12/14/2022]
Abstract
Alzheimer's disease (AD) causes cognitive impairment and serious social isolation. However, there are no effective treatments and even no established confirmatory diagnostic tools for the disease. Amyloid beta (Aβ) aggregation in the brain is the best-known pathognomonic mechanism of AD, so various methods for Aβ detection have been developed for the diagnosis of this disease. We synthesized two novel, ultra-sensitive peptide probes specialized in detecting Aβ aggregates, and examined their potential for future diagnostic application. The peptides are produced through phage high-throughput screening (HTS) and amplified through a serial process called biopanning, which is a repeating method of elution and amplification of probes. We picked phages specific for amyloid from two kinds of phage display. The synthesized peptides were confirmed to have excellent binding affinity to Aβ aggregates, by immunohistochemical staining and western blotting using the brains of 3X transgenic (Tg) AD mice at different stages (5-7, 12-17 months old) of AD severity. In the present study, it was confirmed that newly developed amyloid-binding peptides could be used as novel probes for the detection of Aβ aggregates, which can be used for clinical diagnosis of AD in the future.
Collapse
Affiliation(s)
- Sang-Heon Kim
- Department of Chemistry and Research Institute of Natural Sciences, Hanyang University, Seoul, 04763, Republic of Korea
| | - Eun-Hye Lee
- Department of Neurology, Hanyang University College of Medicine, 11923, Gyeongchun-ro, Guri-Si, Gyeonggi-do, Republic of Korea
| | - Sang-Choon Lee
- Department of Chemistry, Georgia State University, Atlanta, GA, 30303, USA
| | - A-Ru Kim
- Department of Chemistry and Research Institute of Natural Sciences, Hanyang University, Seoul, 04763, Republic of Korea
| | - Hyun-Hee Park
- Department of Neurology, Hanyang University College of Medicine, 11923, Gyeongchun-ro, Guri-Si, Gyeonggi-do, Republic of Korea
| | - Jeong-Woo Son
- Department of Neurology, Hanyang University College of Medicine, 11923, Gyeongchun-ro, Guri-Si, Gyeonggi-do, Republic of Korea
| | - Seong-Ho Koh
- Department of Neurology, Hanyang University College of Medicine, 11923, Gyeongchun-ro, Guri-Si, Gyeonggi-do, Republic of Korea; Department of Translational Medicine, Hanyang University Graduate School of Biomedical Science & Engineering, 11923, Gyeongchun-ro, Guri-Si, Gyeonggi-do, Republic of Korea.
| | - Moon-Young Yoon
- Department of Chemistry and Research Institute of Natural Sciences, Hanyang University, Seoul, 04763, Republic of Korea.
| |
Collapse
|
16
|
Han KM, Kang RJ, Jeon H, Lee HJ, Lee JS, Park H, Gak Jeon S, Suk K, Seo J, Hoe HS. Regorafenib Regulates AD Pathology, Neuroinflammation, and Dendritic Spinogenesis in Cells and a Mouse Model of AD. Cells 2020; 9:cells9071655. [PMID: 32660121 PMCID: PMC7408082 DOI: 10.3390/cells9071655] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [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: 05/29/2020] [Revised: 06/27/2020] [Accepted: 07/06/2020] [Indexed: 12/19/2022] Open
Abstract
The oral multi-target kinase inhibitor regorafenib, which targets the oncogenic receptor tyrosine kinase (RTK), is an effective therapeutic for patients with advanced gastrointestinal stromal tumors or metastatic colorectal cancer. However, whether regorafenib treatment has beneficial effects on neuroinflammation and Alzheimer’s disease (AD) pathology has not been carefully addressed. Here, we report the regulatory function of regorafenib in neuroinflammatory responses and AD-related pathology in vitro and in vivo. Regorafenib affected AKT signaling to attenuate lipopolysaccharide (LPS)-mediated expression of proinflammatory cytokines in BV2 microglial cells and primary cultured microglia and astrocytes. In addition, regorafenib suppressed LPS-induced neuroinflammatory responses in LPS-injected wild-type mice. In 5x FAD mice (a mouse model of AD), regorafenib ameliorated AD pathology, as evidenced by increased dendritic spine density and decreased Aβ plaque levels, by modulating APP processing and APP processing-associated proteins. Furthermore, regorafenib-injected 5x FAD mice displayed significantly reduced tau phosphorylation at T212 and S214 (AT100) due to the downregulation of glycogen synthase kinase-3 beta (GSK3β) activity. Taken together, our results indicate that regorafenib has beneficial effects on neuroinflammation, AD pathology, and dendritic spine formation in vitro and in vivo.
Collapse
Affiliation(s)
- Kyung-Min Han
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu 41068, Korea; (K.-M.H.); (R.J.K.); (H.J.); (H.-j.L.); (J.-S.L.); (H.P.); (S.G.J.)
- Department of Brain and Cognitive Sciences, Daegu Gyeongbuk Institute of Science & Technology, Daegu 42988, Korea
| | - Ri Jin Kang
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu 41068, Korea; (K.-M.H.); (R.J.K.); (H.J.); (H.-j.L.); (J.-S.L.); (H.P.); (S.G.J.)
- Department of Pharmacology, Brain Science & Engineering Institute, School of Medicine, Kyungpook National University, Daegu 41944, Korea;
| | - Hyongjun Jeon
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu 41068, Korea; (K.-M.H.); (R.J.K.); (H.J.); (H.-j.L.); (J.-S.L.); (H.P.); (S.G.J.)
| | - Hyun-ju Lee
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu 41068, Korea; (K.-M.H.); (R.J.K.); (H.J.); (H.-j.L.); (J.-S.L.); (H.P.); (S.G.J.)
| | - Ji-Soo Lee
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu 41068, Korea; (K.-M.H.); (R.J.K.); (H.J.); (H.-j.L.); (J.-S.L.); (H.P.); (S.G.J.)
| | - HyunHee Park
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu 41068, Korea; (K.-M.H.); (R.J.K.); (H.J.); (H.-j.L.); (J.-S.L.); (H.P.); (S.G.J.)
| | - Seong Gak Jeon
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu 41068, Korea; (K.-M.H.); (R.J.K.); (H.J.); (H.-j.L.); (J.-S.L.); (H.P.); (S.G.J.)
| | - Kyoungho Suk
- Department of Pharmacology, Brain Science & Engineering Institute, School of Medicine, Kyungpook National University, Daegu 41944, Korea;
| | - Jinsoo Seo
- Department of Brain and Cognitive Sciences, Daegu Gyeongbuk Institute of Science & Technology, Daegu 42988, Korea
- Correspondence: (J.S.); (H.-S.H.); Tel.: +82-53-420-4835 (J.S.); +82-53-980-8310 (H.-S.H.)
| | - Hyang-Sook Hoe
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu 41068, Korea; (K.-M.H.); (R.J.K.); (H.J.); (H.-j.L.); (J.-S.L.); (H.P.); (S.G.J.)
- Department of Brain and Cognitive Sciences, Daegu Gyeongbuk Institute of Science & Technology, Daegu 42988, Korea
- Correspondence: (J.S.); (H.-S.H.); Tel.: +82-53-420-4835 (J.S.); +82-53-980-8310 (H.-S.H.)
| |
Collapse
|
17
|
Cho H, Hwang M, Hong EH, Yu H, Park HH, Koh SH, Shin YU. Micro-RNAs in the aqueous humour of patients with diabetic macular oedema. Clin Exp Ophthalmol 2020; 48:624-635. [PMID: 32173975 DOI: 10.1111/ceo.13750] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 02/25/2020] [Accepted: 03/11/2020] [Indexed: 02/06/2023]
Abstract
IMPORTANCE Micro-RNAs (miRNAs) have been studied as new biomarkers or mediators in various diseases, but the value of aqueous humour (AH) miRNAs in diabetic macular oedema (DMO) is still not known. BACKGROUND To compare AH miRNAs and related cytokine expression in DMO patients and healthy controls. DESIGN Prospective cross-sectional study. PARTICIPANTS Twenty naïve DMO patients and 13 control subjects, who were scheduled for intravitreal injection and cataract surgery, respectively. METHODS AH samples were collected at the beginning of each procedure and analysed using a miRNA polymerase chain reaction (PCR) array composed of 84 miRNAs, reverse transcripase-quantitative PCR (qPCR) for verifying selected differentially expressed miRNAs, and a cytokine assay, the results of which were compared with bioinformatics conducted to find out genes associated with DMO-related miRNAs. MAIN OUTCOMES MEASURES AH expression of miRNAs and cytokines and the bioinformatics results. RESULTS Five miRNAs (hsa-miR-185-5p, hsa-miR-17-5p, hsa-miR-20a-5p, hsa-miR-15b-5p and hsa-miR-15a-5p) showing a fold change greater than -50 in log2 values in the miRNA PCR array were selected, all significantly down-regulated in the DMO group compared to the control group (P < .05), and showed a direct relationship with tumour necrosis factor, nuclear factor kappa B subunit 1 and interleukin-6 (IL-6) in bioinformatics analysis, all of which were related to vascular endothelial growth factor (VEGF). In the cytokine assay, the aqueous concentrations of VEGF, placental growth factor, IL-6 and IL-8 were significantly higher in the DMO group compared to the control group. CONCLUSIONS AND RELEVANCE This study is the first to perform miRNA profiling of the AH of DMO patients. We identified differentially expressed miRNAs in DMO AH, which may be used as potential biomarkers or novel therapeutic targets for DMO.
Collapse
Affiliation(s)
- Heeyoon Cho
- Department of Ophthalmology, Hanyang University College of Medicine, Seoul, Republic of Korea
| | - Mina Hwang
- Department of Neurology, Hanyang University College of Medicine, Seoul, Republic of Korea
| | - Eun H Hong
- Department of Ophthalmology, Hanyang University College of Medicine, Seoul, Republic of Korea
| | - Hyoseon Yu
- Department of Ophthalmology, Hanyang University College of Medicine, Seoul, Republic of Korea
| | - Hyun-Hee Park
- Department of Neurology, Hanyang University College of Medicine, Seoul, Republic of Korea
| | - Seong-Ho Koh
- Department of Neurology, Hanyang University College of Medicine, Seoul, Republic of Korea.,Department of Translational Medicine, Hanyang University Graduate School of Biomedical Science and Engineering, Seoul, Korea
| | - Yong U Shin
- Department of Ophthalmology, Hanyang University College of Medicine, Seoul, Republic of Korea
| |
Collapse
|
18
|
Koh SH, Choi SH, Jeong JH, Jang JW, Park KW, Kim EJ, Kim HJ, Hong JY, Yoon SJ, Yoon B, Kang JH, Lee JM, Park HH, Ha J, Suh YJ, Kang S. Telomere shortening reflecting physical aging is associated with cognitive decline and dementia conversion in mild cognitive impairment due to Alzheimer's disease. Aging (Albany NY) 2020; 12:4407-4423. [PMID: 32126022 PMCID: PMC7093181 DOI: 10.18632/aging.102893] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [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: 10/29/2019] [Accepted: 02/25/2020] [Indexed: 01/25/2023]
Abstract
We investigated whether telomere length (TL) reflecting physical rather than chronological aging is associated with disease progression in the different cognitive stages of Alzheimer’s disease (AD). Study participants included 89 subjects with amyloid pathology (A+), determined through amyloid PET or cerebrospinal fluid analysis, including 26 cognitively unimpaired (CU A+) individuals, 28 subjects with mild cognitive impairment (MCI A+), and 35 subjects with AD dementia (ADD A+). As controls, 104 CU A- individuals were selected. The participants were evaluated annually over two years from baseline. Compared to the highest TL quartile group of MCI A+ participants, the lowest TL quartile group yielded 2-year differences of -9.438 (95% confidence interval [CI] = -14.567 ~ -4.309), -26.708 (-41.576 ~ -11.839), 3.198 (1.323 ~ 5.056), and 2.549 (0.527 ~ 4.571) on the Mini-Mental State Examination, Consortium to Establish a Registry for AD, Clinical Dementia Rating-Sum of Boxes, and Blessed Dementia Scale-Activities of Daily Living, respectively. With this group, the lowest TL quartile group had a significantly greater probability of progressing to ADD than the highest TL quartile group (hazard ratio = 13.16, 95% CI = 1.11 ~ 156.61). Telomere shortening may be associated with rapid cognitive decline and conversion to dementia in MCI A+.
Collapse
Affiliation(s)
- Seong-Ho Koh
- Department of Neurology, Hanyang University College of Medicine, Guri 11923, Korea
| | - Seong Hye Choi
- Department of Neurology, Inha University School of Medicine, Incheon 22332, Korea
| | - Jee Hyang Jeong
- Department of Neurology, Ewha Womans University School of Medicine, Seoul 07985, Korea
| | - Jae-Won Jang
- Department of Neurology, Kangwon National University School of Medicine, Chuncheon 24289, Korea
| | - Kyung Won Park
- Department of Neurology, Dong-A Medical Center, Dong-A University College of Medicine, Busan 49201, Korea
| | - Eun-Joo Kim
- Department of Neurology, Pusan National University Hospital, Pusan National University School of Medicine and Medical Research Institute, Busan 49241, Korea
| | - Hee Jin Kim
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Korea
| | - Jin Yong Hong
- Department of Neurology, Yonsei University Wonju College of Medicine, Wonju 26426, Korea
| | - Soo Jin Yoon
- Department of Neurology, Eulji University Hospital, Eulji University School of Medicine, Daejeon 35233, Korea
| | - Bora Yoon
- Department of Neurology, Konyang University College of Medicine, Daejeon 35365, Korea
| | - Ju-Hee Kang
- Department of Pharmacology, Inha University School of Medicine, Incheon 22212, Korea
| | - Jong-Min Lee
- Department of Biomedical Engineering, Hanyang University, Seoul 04763, Korea
| | - Hyun-Hee Park
- Department of Neurology, Hanyang University College of Medicine, Guri 11923, Korea
| | - Jungsoon Ha
- Department of Neurology, Hanyang University College of Medicine, Guri 11923, Korea.,GemVax and Kael Co., Ltd, Seongnam 13461, Korea
| | - Young Ju Suh
- Department of Biomedical Sciences, Inha University School of Medicine, Incheon 22332, Korea
| | - Suyeon Kang
- Department of Statistics, Inha University, Incheon 22212, Korea
| |
Collapse
|
19
|
Kwon HS, Lee EH, Park HH, Jin JH, Choi H, Lee KY, Lee YJ, Lee JH, de Oliveira FMS, Kim HY, Seo Kim Y, Kim BJ, Heo SH, Chang DI, Kamali-Moghaddam M, Koh SH. Early increment of soluble triggering receptor expressed on myeloid cells 2 in plasma might be a predictor of poor outcome after ischemic stroke. J Clin Neurosci 2020; 73:215-218. [PMID: 32067825 DOI: 10.1016/j.jocn.2020.02.016] [Citation(s) in RCA: 9] [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] [Received: 12/02/2019] [Accepted: 02/08/2020] [Indexed: 01/02/2023]
Abstract
Soluble triggering receptor expressed on myeloid cells 2 (sTREM2) is derived from cleavage of TREM2, which is expressed on the cell surface of microlgia and other tissue-specific macrophages. In the present study, the changes in the sTREM2 levels after ischemic stroke (IS) and their association with clinical outcomes were evaluated. A total of 43 patients diagnosed with non-cardioembolic IS between June 2011 and May 2014 were consecutively included in this study. Patients treated with intravenous thrombolysis or intra-arterial thrombectomy were excluded. Plasma samples were collected three times (days 1, 7, and 90) after ictus. The sTREM2 level was measured in the samples using the highly sensitive solid-phase proximity ligation assay (SP-PLA). Among the 43 subjects, higher initial NIH stroke scale (NIHSS) score (P = 0.005), early increment of sTREM2 (P < 0.001), and late decrement of sTREM2 (P = 0.002), were more common in patients with poor outcome. Based on multivariate analysis, initial NIHSS score (P = 0.015) and early increment of sTREM2 (P = 0.032) were independently associated with poor outcome. The results from the present study indicate that increment of sTREM2 level at the early phase was a predictor of poor outcome. Serial follow-up of sTREM2 may aid prognosis after stroke.
Collapse
Affiliation(s)
- Hyuk Sung Kwon
- Department of Neurology, Hanyang University College of Medicine, Seoul, Republic of Korea
| | - Eun-Hye Lee
- Department of Neurology, Hanyang University College of Medicine, Seoul, Republic of Korea; Department of Translational Medicine, Hanyang University Graduate School of Biomedical Science & Engineering, Seoul, Republic of Korea
| | - Hyun-Hee Park
- Department of Neurology, Hanyang University College of Medicine, Seoul, Republic of Korea
| | - Jeong-Hwa Jin
- Department of Neurology, Hanyang University College of Medicine, Seoul, Republic of Korea
| | - Hojin Choi
- Department of Neurology, Hanyang University College of Medicine, Seoul, Republic of Korea
| | - Kyu-Yong Lee
- Department of Neurology, Hanyang University College of Medicine, Seoul, Republic of Korea
| | - Young Joo Lee
- Department of Neurology, Hanyang University College of Medicine, Seoul, Republic of Korea
| | - Jae-Hong Lee
- Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | | | - Hyun Young Kim
- Department of Neurology, Hanyang University College of Medicine, Seoul, Republic of Korea
| | - Young Seo Kim
- Department of Neurology, Hanyang University College of Medicine, Seoul, Republic of Korea
| | - Bum Joon Kim
- Department of Neurology, Kyung Hee University College of Medicine, Seoul, Republic of Korea
| | - Sung Hyuk Heo
- Department of Neurology, Kyung Hee University College of Medicine, Seoul, Republic of Korea
| | - Dae-Il Chang
- Department of Neurology, Kyung Hee University College of Medicine, Seoul, Republic of Korea
| | - Masood Kamali-Moghaddam
- Department of Immunology, Genetics, and Pathology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden.
| | - Seong-Ho Koh
- Department of Neurology, Hanyang University College of Medicine, Seoul, Republic of Korea; Department of Translational Medicine, Hanyang University Graduate School of Biomedical Science & Engineering, Seoul, Republic of Korea.
| |
Collapse
|
20
|
Hwang M, Han MH, Park HH, Choi H, Lee KY, Lee YJ, Kim JM, Cheong JH, Ryu JI, Min KW, Oh YH, Ko Y, Koh SH. LGR5 and Downstream Intracellular Signaling Proteins Play Critical Roles in the Cell Proliferation of Neuroblastoma, Meningioma and Pituitary Adenoma. Exp Neurobiol 2019; 28:628-641. [PMID: 31698554 PMCID: PMC6844835 DOI: 10.5607/en.2019.28.5.628] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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: 05/31/2019] [Revised: 09/09/2019] [Accepted: 09/19/2019] [Indexed: 12/15/2022] Open
Abstract
Leucine-rich repeat-containing G-protein coupled receptor 5 (LGR5) has been reported to play critical roles in the proliferation of various cancer cells. However, the roles of LGR5 in brain tumors and the specific intracellular signaling proteins directly associated with it remain unknown. Expression of LGR5 was first measured in normal brain tissue, meningioma, and pituitary adenoma of humans. To identify the downstream signaling pathways of LGR5, siRNA-mediated knockdown of LGR5 was performed in SH-SY5Y neuroblastoma cells followed by proteomics analysis with 2-dimensional polyacrylamide gel electrophoresis (2D-PAGE). In addition, the expression of LGR5-associated proteins was evaluated in LGR5-inhibited neuroblastoma cells and in human normal brain, meningioma, and pituitary adenoma tissue. Proteomics analysis showed 12 protein spots were significantly different in expression level (more than two-fold change) and subsequently identified by peptide mass fingerprinting. A protein association network was constructed from the 12 identified proteins altered by LGR5 knockdown. Direct and indirect interactions were identified among the 12 proteins. HSP 90-beta was one of the proteins whose expression was altered by LGR5 knockdown. Likewise, we observed decreased expression of proteins in the hnRNP subfamily following LGR5 knockdown. In addition, we have for the first time identified significantly higher hnRNP family expression in meningioma and pituitary adenoma compared to normal brain tissue. Taken together, LGR5 and its downstream signaling play critical roles in neuroblastoma and brain tumors such as meningioma and pituitary adenoma.
Collapse
Affiliation(s)
- Mina Hwang
- Department of Neurology, Hanyang University Guri Hospital, Guri 11923, Korea
| | - Myung-Hoon Han
- Department of Neurosurgery, Hanyang University Guri Hospital, Guri 11923, Korea
| | - Hyun-Hee Park
- Department of Neurology, Hanyang University Guri Hospital, Guri 11923, Korea
| | - Hojin Choi
- Department of Neurology, Hanyang University Guri Hospital, Guri 11923, Korea
| | - Kyu-Yong Lee
- Department of Neurology, Hanyang University Guri Hospital, Guri 11923, Korea
| | - Young Joo Lee
- Department of Neurology, Hanyang University Guri Hospital, Guri 11923, Korea
| | - Jae Min Kim
- Department of Neurosurgery, Hanyang University Guri Hospital, Guri 11923, Korea
| | - Jin Hwan Cheong
- Department of Neurosurgery, Hanyang University Guri Hospital, Guri 11923, Korea
| | - Je Il Ryu
- Department of Neurosurgery, Hanyang University Guri Hospital, Guri 11923, Korea
| | - Kyueng-Whan Min
- Department of Pathology, Hanyang University Guri Hospital, Guri 11923, Korea
| | - Young-Ha Oh
- Department of Pathology, Hanyang University Guri Hospital, Guri 11923, Korea
| | - Yong Ko
- Department of Neurosurgery, Hanyang University Medical Center, Seoul 04763, Korea
| | - Seong-Ho Koh
- Department of Neurology, Hanyang University Guri Hospital, Guri 11923, Korea.,Department of Translational Medicine, Hanyang University Graduate School of Biomedical Science & Engineering, Seoul 04763, Korea
| |
Collapse
|
21
|
Ryu KY, Lee HJ, Woo H, Kang RJ, Han KM, Park H, Lee SM, Lee JY, Jeong YJ, Nam HW, Nam Y, Hoe HS. Dasatinib regulates LPS-induced microglial and astrocytic neuroinflammatory responses by inhibiting AKT/STAT3 signaling. J Neuroinflammation 2019; 16:190. [PMID: 31655606 PMCID: PMC6815018 DOI: 10.1186/s12974-019-1561-x] [Citation(s) in RCA: 88] [Impact Index Per Article: 17.6] [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: 05/01/2019] [Accepted: 08/19/2019] [Indexed: 12/14/2022] Open
Abstract
Background The FDA-approved small-molecule drug dasatinib is currently used as a treatment for chronic myeloid leukemia (CML). However, the effects of dasatinib on microglial and/or astrocytic neuroinflammatory responses and its mechanism of action have not been studied in detail. Methods BV2 microglial cells, primary astrocytes, or primary microglial cells were treated with dasatinib (100 or 250 nM) or vehicle (1% DMSO) for 30 min or 2 h followed by lipopolysaccharide (LPS; 200 ng/ml or 1 μg/ml) or PBS for 5.5 h. RT-PCR, real-time PCR; immunocytochemistry; subcellular fractionation; and immunohistochemistry were subsequently conducted to determine the effects of dasatinib on LPS-induced neuroinflammation. In addition, wild-type mice were injected with dasatinib (20 mg/kg, intraperitoneally (i.p.) daily for 4 days or 20 mg/kg, orally administered (p.o.) daily for 4 days or 2 weeks) or vehicle (4% DMSO + 30% polyethylene glycol (PEG) + 5% Tween 80), followed by injection with LPS (10 mg/kg, i.p.) or PBS. Then, immunohistochemistry was performed, and plasma IL-6, IL-1β, and TNF-α levels were analyzed by ELISA. Results Dasatinib regulates LPS-induced proinflammatory cytokine and anti-inflammatory cytokine levels in BV2 microglial cells, primary microglial cells, and primary astrocytes. In BV2 microglial cells, dasatinib regulates LPS-induced proinflammatory cytokine levels by regulating TLR4/AKT and/or TLR4/ERK signaling. In addition, intraperitoneal injection and oral administration of dasatinib suppress LPS-induced microglial/astrocyte activation, proinflammatory cytokine levels (including brain and plasma levels), and neutrophil rolling in the brains of wild-type mice. Conclusions Our results suggest that dasatinib modulates LPS-induced microglial and astrocytic activation, proinflammatory cytokine levels, and neutrophil rolling in the brain. Electronic supplementary material The online version of this article (10.1186/s12974-019-1561-x) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Ka-Young Ryu
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu, 41068, South Korea
| | - Hyun-Ju Lee
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu, 41068, South Korea
| | - Hanwoong Woo
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu, 41068, South Korea
| | - Ri-Jin Kang
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu, 41068, South Korea
| | - Kyung-Min Han
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu, 41068, South Korea.,Department of Brain & Cognitive Sciences, Daegu Gyeongbuk Institute of Science & Technology (DGIST), 333 Techno Jungang-daero, Hyeonpung-myeon, Dalseong-gun, Daegu, 42988, South Korea
| | - HyunHee Park
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu, 41068, South Korea
| | - Sang Min Lee
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu, 41068, South Korea
| | - Ju-Young Lee
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu, 41068, South Korea
| | - Yoo Joo Jeong
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu, 41068, South Korea
| | - Hyun-Wook Nam
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu, 41068, South Korea
| | - Youngpyo Nam
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu, 41068, South Korea.
| | - Hyang-Sook Hoe
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), 61, Cheomdan-ro, Dong-gu, Daegu, 41068, South Korea. .,Department of Brain & Cognitive Sciences, Daegu Gyeongbuk Institute of Science & Technology (DGIST), 333 Techno Jungang-daero, Hyeonpung-myeon, Dalseong-gun, Daegu, 42988, South Korea.
| |
Collapse
|
22
|
Shin SJ, Jeon SG, Kim JI, Jeong YO, Kim S, Park YH, Lee SK, Park HH, Hong SB, Oh S, Hwang JY, Kim HS, Park H, Nam Y, Lee YY, Kim JJ, Park SH, Kim JS, Moon M. Red Ginseng Attenuates Aβ-Induced Mitochondrial Dysfunction and Aβ-mediated Pathology in an Animal Model of Alzheimer's Disease. Int J Mol Sci 2019; 20:E3030. [PMID: 31234321 PMCID: PMC6627470 DOI: 10.3390/ijms20123030] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 06/05/2019] [Accepted: 06/19/2019] [Indexed: 12/03/2022] Open
Abstract
Alzheimer's disease (AD) is the most common neurodegenerative disease and is characterized by neurodegeneration and cognitive deficits. Amyloid beta (Aβ) peptide is known to be a major cause of AD pathogenesis. However, recent studies have clarified that mitochondrial deficiency is also a mediator or trigger for AD development. Interestingly, red ginseng (RG) has been demonstrated to have beneficial effects on AD pathology. However, there is no evidence showing whether RG extract (RGE) can inhibit the mitochondrial deficit-mediated pathology in the experimental models of AD. The effects of RGE on Aβ-mediated mitochondrial deficiency were investigated in both HT22 mouse hippocampal neuronal cells and the brains of 5XFAD Aβ-overexpressing transgenic mice. To examine whether RGE can affect mitochondria-related pathology, we used immunohistostaining to study the effects of RGE on Aβ accumulation, neuroinflammation, neurodegeneration, and impaired adult hippocampal neurogenesis in hippocampal formation of 5XFAD mice. In vitro and in vivo findings indicated that RGE significantly improves Aβ-induced mitochondrial pathology. In addition, RGE significantly ameliorated AD-related pathology, such as Aβ deposition, gliosis, and neuronal loss, and deficits in adult hippocampal neurogenesis in brains with AD. Our results suggest that RGE may be a mitochondria-targeting agent for the treatment of AD.
Collapse
Affiliation(s)
- Soo Jung Shin
- Department of Biochemistry, College of Medicine, Konyang University, Daejeon 35365, Korea.
| | - Seong Gak Jeon
- Department of Biochemistry, College of Medicine, Konyang University, Daejeon 35365, Korea.
| | - Jin-Il Kim
- Department of Nursing, College of Nursing, Jeju National University, Jeju-si 63243, Korea.
| | - Yu-On Jeong
- Department of Biochemistry, College of Medicine, Konyang University, Daejeon 35365, Korea.
| | - Sujin Kim
- Department of Biochemistry, College of Medicine, Konyang University, Daejeon 35365, Korea.
| | - Yong Ho Park
- Department of Biochemistry, College of Medicine, Konyang University, Daejeon 35365, Korea.
| | - Seong-Kyung Lee
- Department of Biochemistry, College of Medicine, Konyang University, Daejeon 35365, Korea.
| | - Hyun Ha Park
- Department of Biochemistry, College of Medicine, Konyang University, Daejeon 35365, Korea.
| | - Sang Bum Hong
- Department of Biochemistry, College of Medicine, Konyang University, Daejeon 35365, Korea.
| | - Sua Oh
- Department of Biochemistry, College of Medicine, Konyang University, Daejeon 35365, Korea.
| | - Ji-Young Hwang
- Department of Biochemistry, College of Medicine, Konyang University, Daejeon 35365, Korea.
| | - Hyeon Soo Kim
- Department of Biochemistry, College of Medicine, Konyang University, Daejeon 35365, Korea.
| | - HyunHee Park
- Department of Biochemistry, College of Medicine, Konyang University, Daejeon 35365, Korea.
| | - Yunkwon Nam
- Department of Biochemistry, College of Medicine, Konyang University, Daejeon 35365, Korea.
| | - Yong Yook Lee
- The Korean Ginseng Research Institute, Korea Ginseng Corporation, Gajeong-ro, Shinseong-dong, Yuseong-gu, Daejeon 34128, Korea.
| | - Jwa-Jin Kim
- Department of Nephrology, School of Medicine, Chungnam National University, Daejeon 35015, Korea.
| | - Sun-Hyun Park
- R&D center for Advanced Pharmaceuticals & Evaluation, Korea Institute of toxicology, 141, Gajeong-ro, Yuseong-gu, Daejeon 34114, Korea.
| | - Jong-Seok Kim
- Myunggok Medical Research Institute, College of Medicine, Konyang University, Daejeon 35365, Korea.
| | - Minho Moon
- Department of Biochemistry, College of Medicine, Konyang University, Daejeon 35365, Korea.
| |
Collapse
|
23
|
Choi H, Choi NY, Park HH, Lee KY, Lee YJ, Koh SH. Sublethal Doses of Zinc Protect Rat Neural Stem Cells Against Hypoxia Through Activation of the PI3K Pathway. Stem Cells Dev 2019; 28:769-780. [PMID: 30896367 DOI: 10.1089/scd.2018.0138] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Cerebral infarction is one of the major causes of severe morbidity and mortality, and thus, research has focused on developing treatment options for this condition. Zinc (Zn) is an essential element in the central nervous system and has several neuroprotective effects in the brain. In this study, we examined the neuroprotective effects of Zn on neural stem cells (NSCs) exposed to hypoxia. After treatment with several concentrations of Zn, the viability of NSCs under hypoxic conditions was measured by a 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay, Trypan blue staining, and a lactate dehydrogenase assay. To evaluate the effect of Zn on the proliferation of NSCs, bromodeoxyuridine/5-bromo-2'-deoxyuridine (BrdU) labeling and colony formation assays were performed. Apoptosis was also examined in NSCs exposed to hypoxia with and without Zn treatment. In addition, a western blot analysis was performed to evaluate the effect of Zn on intracellular signaling proteins. NSC viability and proliferation were decreased under hypoxic conditions, but treatment with sublethal doses of Zn restored viability and proliferation. Sublethal doses of Zn reduced apoptosis caused by hypoxia, increased the expression levels of proteins related to the phosphatidylinositol-3 kinase (PI3K) pathway, and decreased the expression levels of proteins associated with neuronal cell death. These findings confirm that in vivo, sublethal doses of Zn protect NSCs against hypoxia through the activation of the PI3K pathway. Thus, Zn could be employed as a therapeutic option to protect NSCs in ischemic stroke.
Collapse
Affiliation(s)
- Hojin Choi
- 1 Department of Neurology, Hanyang University College of Medicine, Seoul, Korea
| | - Na-Young Choi
- 1 Department of Neurology, Hanyang University College of Medicine, Seoul, Korea
| | - Hyun-Hee Park
- 1 Department of Neurology, Hanyang University College of Medicine, Seoul, Korea
| | - Kyu-Yong Lee
- 1 Department of Neurology, Hanyang University College of Medicine, Seoul, Korea
| | - Young Joo Lee
- 1 Department of Neurology, Hanyang University College of Medicine, Seoul, Korea
| | - Seong-Ho Koh
- 1 Department of Neurology, Hanyang University College of Medicine, Seoul, Korea
- 2 Department of Translational Medicine, Hanyang University Graduate School of Biomedical Science & Engineering, Seoul, Korea
| |
Collapse
|
24
|
Lee SC, Park HH, Kim SH, Koh SH, Han SH, Yoon MY. Ultrasensitive Fluorescence Detection of Alzheimer's Disease Based on Polyvalent Directed Peptide Polymer Coupled to a Nanoporous ZnO Nanoplatform. Anal Chem 2019; 91:5573-5581. [PMID: 30938150 DOI: 10.1021/acs.analchem.8b03735] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Amyloid-beta 42 (Aβ42), the key biomarker of Alzheimer's disease (AD), aggregates to form neurotoxic amyloid plaques. In this work, we modified two fluorescein isothiocyanate-labeled Aβ42-targeting peptides and designed an Aβ42-specific ultrasensitive polyvalent-directed peptide polymer (PDPP) to enhance AD diagnosis sensitivity. The dissociation constant of Aβ42 by PDPP was 103-fold higher than the single-site-directed peptide. The improved binding was due to the ability of PDPP to detect multiple receptors on the target. The power of the PDPP diagnostic probe was verified in its application to detect Aβ42 in cerebrospinal fluid (CSF), which showed a lower limit of detection (LOD) in the fg mL-1 range that is more sensitive than detection by antibodies or single peptides. In addition, we present a novel ultrasensitive diagnostic system using an array of nanoporous ZnO nanoparticles, which play a role in fluorescence signal amplification, to further improve AD diagnosis sensitivity. We enhanced the signal on the basis of the properties of nanoporous ZnO nanoparticles and measured and quantified an ultralow concentration (ag mL-1 range) of Aβ42. This PDPP coupled to the nanoporous ZnO-based system is a novel approach to AD diagnosis that might also be useful for the detection of other target biomarkers and clinical applications.
Collapse
Affiliation(s)
- Sang-Choon Lee
- Department of Chemistry and Research Institute for Natural Sciences , Hanyang University , Seoul 04763 , Republic of Korea.,Department of Chemistry , Georgia State University , Atlanta , Georgia 30303 , United States
| | - Hyun-Hee Park
- Department of Neurology , Hanyang University College of Medicine , Seoul 04763 , Republic of Korea
| | - Sang-Heon Kim
- Department of Chemistry and Research Institute for Natural Sciences , Hanyang University , Seoul 04763 , Republic of Korea
| | - Seong-Ho Koh
- Department of Neurology , Hanyang University College of Medicine , Seoul 04763 , Republic of Korea
| | - Sung-Hwan Han
- Department of Chemistry and Research Institute for Natural Sciences , Hanyang University , Seoul 04763 , Republic of Korea
| | - Moon-Young Yoon
- Department of Chemistry and Research Institute for Natural Sciences , Hanyang University , Seoul 04763 , Republic of Korea
| |
Collapse
|
25
|
Hong EH, Hwang M, Shin YU, Park HH, Koh SH, Cho H. Leucine-rich G Protein-coupled Receptor-5 Is Significantly Increased in the Aqueous Humor of Human Eye with Proliferative Diabetic Retinopathy. Exp Neurobiol 2018; 27:238-244. [PMID: 30022875 PMCID: PMC6050418 DOI: 10.5607/en.2018.27.3.238] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 04/13/2018] [Revised: 06/08/2018] [Accepted: 06/21/2018] [Indexed: 12/14/2022] Open
Abstract
Leucine-rich G protein-coupled receptor-5 (LGR5) is known to be a stem cell marker in many organs. LGR5 may have important roles in proliferative diabetic retinopathy (PDR) because LGR5 potentiate the Wnt/β-catenin pathway, which plays crucial roles in pathologic neovascularization in the retina. The association between LGR5 and retinal pathologic neovascularization has not yet been reported. In the present study, LGR5 was compared in human aqueous humor (AH) between normal control and patients with PDR to confirm the relationship between LGR5 and PDR. AH was collected from 7 naïve PDR patients and 3 control subjects before intravitreal injection and cataract surgery, respectively. LGR5 and key members of Wnt/β-catenin were assessed by western blotting. In the present study, it was confirmed for the first time that LGR5 is detected in AH and it increases in PDR patients. Key members of Wnt/β-catenin pathway were also increased in AH of PDR patients compared to control. These findings might support the hypothesis that LGR5 has important roles in PDR especially considering the roles of the Wnt/β-catenin pathway, which is activated by LGR5, contributing to retinal pathologic neovascularization.
Collapse
Affiliation(s)
- Eun Hee Hong
- Department of Ophthalmology, Hanyang University College of Medicine, Seoul 04763, Korea
| | - Mina Hwang
- Department of Neurology, Hanyang University College of Medicine, Seoul 04763, Korea
| | - Yong Un Shin
- Department of Ophthalmology, Hanyang University College of Medicine, Seoul 04763, Korea
| | - Hyun-Hee Park
- Department of Neurology, Hanyang University College of Medicine, Seoul 04763, Korea
| | - Seong-Ho Koh
- Department of Neurology, Hanyang University College of Medicine, Seoul 04763, Korea
| | - Heeyoon Cho
- Department of Ophthalmology, Hanyang University College of Medicine, Seoul 04763, Korea
| |
Collapse
|
26
|
Heo SH, Lee EH, Park HH, Kim BJ, Youn HC, Kim YS, Kim HY, Koh SH, Chang DI. Differences between the Molecular Mechanisms Underlying Ruptured and Non-Ruptured Carotid Plaques, and the Significance of ABCA1. J Stroke 2018; 20:80-91. [PMID: 29402067 PMCID: PMC5836578 DOI: 10.5853/jos.2017.02390] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [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: 10/11/2017] [Revised: 01/02/2018] [Accepted: 01/19/2018] [Indexed: 01/03/2023] Open
Abstract
Background and Purpose Carotid plaques are a strong risk factor for ischemic stroke, and plaque rupture poses an even higher risk. Although many studies have investigated the pathogenic mechanisms of carotid plaque formation, few have studied the differences in molecular mechanisms underlying the rupture and non-rupture of carotid plaques. In addition, since early diagnosis and treatment of carotid plaque rupture are critical for the prevention of ischemic stroke, many studies have sought to identify the important target molecules involved in the rupture. However, a target molecule critical in symptomatic ruptured plaques is yet to be identified. Methods A total of 79 carotid plaques were consecutively collected, and microscopically divided into ruptured and non-ruptured groups. Quantitative polymerase chain reaction array, proteomics, and immunohistochemistry were performed to compare the differences in molecular mechanisms between ruptured and non-ruptured plaques. Enzyme-linked immunosorbent assay was used to measure the differences in ATP-binding cassette subfamily A member 1 (ABCA1) levels in the serum. Results The expression of several mRNAs and proteins, including ABCA1, was higher in ruptured plaques than non-ruptured plaques. In contrast, the expression of other proteins, including β-actin, was lower in ruptured plaques than non-ruptured plaques. The increased expression of ABCA1 was consistent across several experiments, ABCA1 was positive only in the serum of patients with symptomatic ruptured plaques. Conclusions This study introduces a plausible molecular mechanism underlying carotid plaque rupture, suggesting that ABCA1 plays a role in symptomatic rupture. Further study of ABCA1 is needed to confirm this hypothesis.
Collapse
Affiliation(s)
- Sung Hyuk Heo
- Department of Neurology, Kyung Hee University School of Medicine, Seoul, Korea
| | - Eun-Hye Lee
- Department of Neurology, Hanyang University College of Medicine, Seoul, Korea.,Department of Translational Medicine, Hanyang University Graduate School of Biomedical Science & Engineering, Seoul, Korea
| | - Hyun-Hee Park
- Department of Neurology, Hanyang University College of Medicine, Seoul, Korea
| | - Bum Joon Kim
- Department of Neurology, Kyung Hee University School of Medicine, Seoul, Korea
| | - Hyo Chul Youn
- Department of Thoracic and Cardiovascular Surgery, Kyung Hee University School of Medicine, Seoul, Korea
| | - Young Seo Kim
- Department of Neurology, Hanyang University College of Medicine, Seoul, Korea
| | - Hyun Young Kim
- Department of Neurology, Hanyang University College of Medicine, Seoul, Korea
| | - Seong-Ho Koh
- Department of Neurology, Hanyang University College of Medicine, Seoul, Korea.,Department of Translational Medicine, Hanyang University Graduate School of Biomedical Science & Engineering, Seoul, Korea
| | - Dae-Il Chang
- Department of Neurology, Kyung Hee University School of Medicine, Seoul, Korea
| |
Collapse
|
27
|
Park HH, Lee KY, Park DW, Choi NY, Lee YJ, Son JW, Kim S, Moon C, Kim HW, Rhyu IJ, Koh SH. Tracking and protection of transplanted stem cells using a ferrocenecarboxylic acid-conjugated peptide that mimics hTERT. Biomaterials 2017; 155:80-91. [PMID: 29169040 DOI: 10.1016/j.biomaterials.2017.11.009] [Citation(s) in RCA: 9] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 11/08/2017] [Accepted: 11/12/2017] [Indexed: 02/07/2023]
Abstract
In vivo tracking of transplanted stem cells has been a central aim of stem cell therapy. Although many tracking systems have been introduced, no method has yet been validated for clinical applications. We developed a novel sophisticated peptide (GV1001) that mimics hTERT (human telomerase reverse transcriptase) and analysed its ability to track and protect stem cells after transplantation. Ferrocenecarboxylic acid-conjugated GV1001 (Fe-GV1001) efficiently penetrated stem cells with no adverse effects. Moreover, Fe-GV1001 improved the viability, proliferation, and migration of stem cells under hypoxia. After Fe-GV1001-labelled stem cells were transplanted into the brains of rats after stroke, the labelled cells were easily tracked by MRI. Our findings indicate that Fe-GV1001 can be used for the in vivo tracking of stem cells after transplantation into the brain and can improve the efficacy of stem cell therapy by sustaining and enhancing stem cell characteristics under disease conditions.
Collapse
Affiliation(s)
- Hyun-Hee Park
- Department of Neurology, Hanyang University Guri Hospital, 153, Gyeongchun-ro, Guri-si, Gyeonggi-do 11923, South Korea
| | - Kyu-Yong Lee
- Department of Neurology, Hanyang University Guri Hospital, 153, Gyeongchun-ro, Guri-si, Gyeonggi-do 11923, South Korea
| | - Dong Woo Park
- Department of Radiology, Hanyang University Guri Hospital, 153, Gyeongchun-ro, Guri-si, Gyeonggi-do 11923, South Korea
| | - Na-Young Choi
- Department of Neurology, Hanyang University Guri Hospital, 153, Gyeongchun-ro, Guri-si, Gyeonggi-do 11923, South Korea
| | - Young Joo Lee
- Department of Neurology, Hanyang University Guri Hospital, 153, Gyeongchun-ro, Guri-si, Gyeonggi-do 11923, South Korea
| | - Jeong-Woo Son
- Department of Translational Medicine, Hanyang University Graduate School of Biomedical Science & Engineering, Seoul, 04763, South Korea
| | - Sangjae Kim
- Teloid Inc., 920 Westholme Ave, Los Angeles (City), CA 90024, USA
| | - Chanil Moon
- Department of Neuroscience, GemVax & KAEL Co., Ltd., Seoul, South Korea
| | - Hyun-Wook Kim
- Brain Korea 21 PLUS, KU Medical Science Center for Convergent Translational Research, 73 Inchonro, Seongbuk-gu, Seoul, 136-705, South Korea; Department of Anatomy, College of Medicine, Korea University, 73 Inchon-ro, Seongbuk-gu, Seoul, 136-705, South Korea
| | - Im Joo Rhyu
- Brain Korea 21 PLUS, KU Medical Science Center for Convergent Translational Research, 73 Inchonro, Seongbuk-gu, Seoul, 136-705, South Korea; Department of Anatomy, College of Medicine, Korea University, 73 Inchon-ro, Seongbuk-gu, Seoul, 136-705, South Korea
| | - Seong-Ho Koh
- Department of Neurology, Hanyang University Guri Hospital, 153, Gyeongchun-ro, Guri-si, Gyeonggi-do 11923, South Korea; Department of Translational Medicine, Hanyang University Graduate School of Biomedical Science & Engineering, Seoul, 04763, South Korea.
| |
Collapse
|
28
|
Lim HW, Park JH, Park HH, Lee SJ. Time series analysis of patients seeking orthodontic treatment at Seoul National University Dental Hospital over the past decade. Korean J Orthod 2017; 47:298-305. [PMID: 28861391 PMCID: PMC5548710 DOI: 10.4041/kjod.2017.47.5.298] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [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: 11/02/2016] [Revised: 01/22/2017] [Accepted: 02/21/2017] [Indexed: 11/10/2022] Open
Abstract
Objective This paper describes changes in the characteristics of patients seeking orthodontic treatment over the past decade and the treatment they received, to identify any seasonal variations or trends. Methods This single-center retrospective cohort study included all patients who presented to Seoul National University Dental Hospital for orthodontic diagnosis and treatment between January 1, 2005 and December 31, 2015. The study analyzed a set of heterogeneous variables grouped into the following categories: demographic (age, gender, and address), clinical (Angle Classification, anomaly, mode of orthodontic treatment, removable appliances for Phase 1 treatment, fixed appliances for Phase 2 treatment, orthognathic surgery, extraction, mini-plate, mini-implant, and patient transfer) and time-related variables (date of first visit and orthodontic treatment time). Time series analysis was applied to each variable. Results The sample included 14,510 patients with a median age of 19.5 years. The number of patients and their ages demonstrated a clear seasonal variation, which peaked in the summer and winter. Increasing trends were observed for the proportion of male patients, use of non-extraction treatment modality, use of ceramic brackets, patients from provinces outside the Seoul region at large, patients transferred from private practitioners, and patients who underwent orthognathic surgery performed by university surgeons. Decreasing trends included the use of metal brackets and orthodontic treatment time. Conclusions Time series analysis revealed a seasonal variation in some characteristics, and several variables showed changing trends over the past decade.
Collapse
Affiliation(s)
- Hyun-Woo Lim
- Department of Dentistry, Seoul National University School of Dentistry, Seoul, Korea
| | - Ji-Hoon Park
- Department of Orthodontics, Graduate School, Seoul National University, Seoul, Korea
| | - Hyun-Hee Park
- Department of Orthodontics, Graduate School, Seoul National University, Seoul, Korea
| | - Shin-Jae Lee
- Department of Orthodontics, Seoul National University School of Dentistry and Dental Research Institute, Seoul, Korea
| |
Collapse
|
29
|
Abstract
OBJECTIVE To examine the current trends in surgical-orthodontic treatment for patients with Class III malocclusion using time-series analysis. MATERIALS AND METHODS The records of 2994 consecutive patients who underwent orthognathic surgery from January 1, 2004, through December 31, 2015, at Seoul National University Dental Hospital, Seoul, Korea, were reviewed. Clinical data from each surgical and orthodontic treatment record included patient's sex, age at the time of surgery, malocclusion classification, type of orthognathic surgical procedure, place where the orthodontic treatment was performed, orthodontic treatment modality, and time elapsed for pre- and postoperative orthodontic treatment. RESULTS Out of the orthognathic surgery patients, 86% had Class III malocclusion. Among them, two-jaw surgeries have become by far the most common orthognathic surgical treatment these days. The age at the time of surgery and the number of new patients had seasonal variations, which demonstrated opposing patterns. There was neither positive nor negative correlation between pre- and postoperative orthodontic treatment time. Elapsed orthodontic treatment time for both before and after Class III orthognathic surgeries has been decreasing over the years. CONCLUSION Results of the time series analysis might provide clinicians with some insights into current surgical and orthodontic management.
Collapse
|
30
|
Park HH, Yu HJ, Kim S, Kim G, Choi NY, Lee EH, Lee YJ, Yoon MY, Lee KY, Koh SH. Neural stem cells injured by oxidative stress can be rejuvenated by GV1001, a novel peptide, through scavenging free radicals and enhancing survival signals. Neurotoxicology 2016; 55:131-141. [PMID: 27265016 DOI: 10.1016/j.neuro.2016.05.022] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [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: 09/20/2015] [Revised: 05/30/2016] [Accepted: 05/31/2016] [Indexed: 12/21/2022]
Abstract
Oxidative stress is a well-known pathogenic mechanism of a diverse array of neurological diseases, and thus, numerous studies have attempted to identify antioxidants that prevent neuronal cell death. GV1001 is a 16-amino-acid peptide derived from human telomerase reverse transcriptase (hTERT). Considering that hTERT has a strong antioxidant effect, whether GV1001 also has an antioxidant effect is a question of interest. In the present study, we aimed to investigate the effects of GV1001 against oxidative stress in neural stem cells (NSCs). Primary culture NSCs were treated with different concentrations of GV1001 and/or hydrogen peroxide (H2O2) for various time durations. The H2O2 decreased the viability of the NSCs in a concentration-dependent manner, with 200μM H2O2 significantly decreasing both proliferation and migration. However, treatment with GV1001 rescued the viability, proliferation and migration of H2O2-injured NSCs. Consistently, free radical levels were increased in rat NSCs treated with H2O2, while co-treatment with GV1001 significantly reduced these levels, especially the intracellular levels. In addition, GV1001 restored the expression of survival-related proteins and reduced the expression of death-associated ones in NSCs treated with H2O2. In conclusion, GV1001 has antioxidant and neuroprotective effects in NSCs following treatment with H2O2, which appear to be mediated by scavenging free radicals, increasing survival signals and decreasing death signals.
Collapse
Affiliation(s)
- Hyun-Hee Park
- Department of Neurology, Hanyang University College of Medicine, Seoul, South Korea
| | - Hyun-Jung Yu
- Department of Neurology, Bundang Jesaeng General Hospital, Gyeonggi, South Korea
| | - Sangjae Kim
- Department of Neuroscience, KAEL-Gemvax Co., Ltd., Seoul, South Korea
| | - Gabseok Kim
- Department of Neuroscience, KAEL-Gemvax Co., Ltd., Seoul, South Korea
| | - Na-Young Choi
- Department of Translational Medicine, Hanyang University Graduate School of Biomedical Science & Engineering, Seoul, South Korea
| | - Eun-Hye Lee
- Department of Translational Medicine, Hanyang University Graduate School of Biomedical Science & Engineering, Seoul, South Korea
| | - Young Joo Lee
- Department of Neurology, Hanyang University College of Medicine, Seoul, South Korea
| | - Moon-Young Yoon
- Department of Chemistry and Research Institute of Natural Sciences, Hanyang University, Seoul, South Korea
| | - Kyu-Yong Lee
- Department of Neurology, Hanyang University College of Medicine, Seoul, South Korea.
| | - Seong-Ho Koh
- Department of Neurology, Hanyang University College of Medicine, Seoul, South Korea; Department of Translational Medicine, Hanyang University Graduate School of Biomedical Science & Engineering, Seoul, South Korea.
| |
Collapse
|
31
|
Abstract
Stroke, resulting from limited blood flow to the brain, is one of the most important causes of morbidity and mortality worldwide. Stroke is classified as ischemic, due to lack of blood flow, or hemorrhagic, due to bleeding. Because 87 % of strokes are classified as ischemic, this type will be the predominant focus of this review. Except for thrombolytic therapy, there is no established treatment to reduce the neurological deficits caused by ischemic stroke. Therefore, it is necessary to develop new therapeutic strategies designed to improve neurological functions after ischemic stroke. Recently, therapies to enhance neurogenesis after ischemic stroke have been investigated. However, these approaches have not led to successful clinical outcomes. This review addresses the pathophysiology of stroke, neurogenesis after stroke, and how to stimulate these processes based on the current literature. Finally, ongoing clinical trials to improve neurological functions after stroke by enhancing neurogenesis are discussed in this review.
Collapse
Affiliation(s)
- Seong-Ho Koh
- Department of Neurology, Hanyang University College of Medicine, 249-1 Guri Hospital, Gyomun-dong, Guri-si, Gyeonggi-do, 471-701, Republic of Korea. .,Department of Translational Medicine, Hanyang University Graduate School of Biomedical Science & Engineering, Seoul, Republic of Korea.
| | - Hyun-Hee Park
- Department of Neurology, Hanyang University College of Medicine, 249-1 Guri Hospital, Gyomun-dong, Guri-si, Gyeonggi-do, 471-701, Republic of Korea
| |
Collapse
|
32
|
Koh SH, Son JW, Choi H, Yoo A, Park HH, Kim YS, Lee KY, Lee YJ. Abstract TP103: Activation of the Pi3k Pathway Plays Important Roles in Reduction of Cerebral Infarction by Cilnidipine. Stroke 2016. [DOI: 10.1161/str.47.suppl_1.tp103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Cerebral infarction causes permanent neuronal loss inducing severe morbidity and mortality. Because hypertension is the main risk factor for cerebral infarction and most patients with hypertension take daily antihypertensive drugs, the neuroprotective effects and mechanisms of anti-hypertensive drugs need to be investigated. Cilnidipine, a long-acting, second-generation 1,4-dihydropyridine inhibitor of both L- and N-type calcium channels, was reported to reduce oxidative stress. In this study, we investigated whether cilnidipine has therapeutic effects in an animal model of cerebral infarction. After determination of the most effective dose of cilnidipine, a total of 128 rats were subjected to middle cerebral artery occlusion (MCAO). Neurobehavioral function test and brain MRI were performed, and rats with similar sized infarcts were randomized to either the cilnidipine group or the control group. Cilnidipine treatment was performed with reperfusion after 2-hr occlusion. Western blots and immunohistochemistry were also performed after 24-hr occlusion. Initial infarct volume on DWI was not different between the cilnidipine group and the control group; however, FLAIR MRI at 24 hr showed significantly reduced infarct volume in the cilnidipine group compared with the control group. Cilnidipine treatment significantly decreased the number of TUNEL-positive cells compared to the control group. Western blot and immunohistochemistry showed increased expression of phosphorylated Akt (Ser473), phosphorylated GSK-3β, and Bcl-2 and decreased expression of Bax and cleaved caspase-3. These results suggest that cilnidipine, which is used for the treatment of hypertension, has neuroprotective effects in the ischemic brain through activation of the PI3K pathway.
Collapse
Affiliation(s)
- Seong-Ho Koh
- Neurology, Hanyang Univ College of Medicine, Guri-si, Gyeonggi Province, Korea, Republic of
| | - Jeong-Woo Son
- Neurology, Hanyang Univ College of Medicine, Guri-si, Gyeonggi Province, Korea, Republic of
| | - Hojin Choi
- Neurology, Hanyang Univ College of Medicine, Guri-si, Gyeonggi Province, Korea, Republic of
| | - Arum Yoo
- Neurology, Hanyang Univ College of Medicine, Guri-si, Gyeonggi Province, Korea, Republic of
| | - Hyun-Hee Park
- Neurology, Hanyang Univ College of Medicine, Guri-si, Gyeonggi Province, Korea, Republic of
| | - Young-Seo Kim
- Neurology, Hanyang Univ College of Medicine, Guri-si, Gyeonggi Province, Korea, Republic of
| | - Kyu-Yong Lee
- Neurology, Hanyang Univ College of Medicine, Guri-si, Gyeonggi Province, Korea, Republic of
| | - Young Joo Lee
- Neurology, Hanyang Univ College of Medicine, Guri-si, Gyeonggi Province, Korea, Republic of
| |
Collapse
|
33
|
Son JW, Choi H, Yoo A, Park HH, Kim YS, Lee KY, Lee YJ, Koh SH. Activation of the phosphatidylinositol 3-kinase pathway plays important roles in reduction of cerebral infarction by cilnidipine. J Neurochem 2015. [DOI: 10.1111/jnc.13254] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jeong-Woo Son
- Department of Translational Medicine; Hanyang University Graduate School of Biomedical Science & Engineering; Seoul Korea
| | - Hojin Choi
- Department of Neurology; Hanyang University College of Medicine; Seoul Korea
| | - Arum Yoo
- Department of Neurology; Hanyang University College of Medicine; Seoul Korea
| | - Hyun-Hee Park
- Department of Neurology; Hanyang University College of Medicine; Seoul Korea
| | - Young-Seo Kim
- Department of Neurology; Hanyang University College of Medicine; Seoul Korea
| | - Kyu-Yong Lee
- Department of Neurology; Hanyang University College of Medicine; Seoul Korea
| | - Young Joo Lee
- Department of Neurology; Hanyang University College of Medicine; Seoul Korea
| | - Seong-Ho Koh
- Department of Translational Medicine; Hanyang University Graduate School of Biomedical Science & Engineering; Seoul Korea
- Department of Neurology; Hanyang University College of Medicine; Seoul Korea
| |
Collapse
|
34
|
Park HH, Lee KO. The Relationship between Metabolic Syndrome Risk Factors and Health Promotion Behavior in General Hospital Nurses. ACTA ACUST UNITED AC 2015. [DOI: 10.5392/jkca.2015.15.06.314] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
35
|
Kwon HS, Kim YS, Park HH, Choi H, Lee KY, Lee YJ, Heo SH, Chang DI, Koh SH. Increased VEGF and decreased SDF-1α in patients with silent brain infarction are associated with better prognosis after first-ever acute lacunar stroke. J Stroke Cerebrovasc Dis 2015; 24:704-10. [PMID: 25601176 DOI: 10.1016/j.jstrokecerebrovasdis.2014.11.021] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [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: 09/30/2014] [Revised: 11/11/2014] [Accepted: 11/19/2014] [Indexed: 10/24/2022] Open
Abstract
BACKGROUND Pre-existing silent brain infarctions (SBIs) have been reported to be associated with better outcomes after first-ever symptomatic ischemic stroke, although the mechanism of this remains unclear. We investigated the association between SBIs, outcomes of acute lacunar infarction, and biomarkers including vascular endothelial growth factor (VEGF), stromal cell-derived factor-1α (SDF-1α), macrophage migration inhibitory factor (MIF), and high-mobility group box-1 (HMGB1). METHODS A total of 68 consecutive patients diagnosed with first-ever lacunar infarction (<20 mm) within 24 hours of symptom onset were included in this study. Clinical, laboratory, and imaging data were obtained. Plasma levels of VEGF, SDF-1α, MIF, and HMGB1 were assessed using Enzyme-Linked Immunosorbent Assay kits. RESULTS SBIs were noted in 31 of the 68 patients. Although the initial National Institutes of Health Stroke Scale scores were not related with the presence of SBIs (P = .313), patients with SBIs had better outcomes at 3 months (P = .029). Additionally, plasma VEGF levels were higher (P = .035) and SDF-1α levels were lower (P < .001) in patients with SBIs. Logistic regression analysis indicated that VEGF and SDF-1α were independently associated with the presence of SBIs. CONCLUSIONS SBIs are associated with favorable outcomes in patients with first-ever acute lacunar infarction and higher levels of VEGF, and lower levels of SDF-1α in these patients may contribute to their more favorable prognosis.
Collapse
Affiliation(s)
- Hyuk Sung Kwon
- Department of Neurology, Hanyang University College of Medicine, Seoul, Republic of Korea
| | - Young Seo Kim
- Department of Neurology, Hanyang University College of Medicine, Seoul, Republic of Korea
| | - Hyun-Hee Park
- Department of Neurology, Hanyang University College of Medicine, Seoul, Republic of Korea
| | - Hojin Choi
- Department of Neurology, Hanyang University College of Medicine, Seoul, Republic of Korea
| | - Kyu-Yong Lee
- Department of Neurology, Hanyang University College of Medicine, Seoul, Republic of Korea
| | - Young Joo Lee
- Department of Neurology, Hanyang University College of Medicine, Seoul, Republic of Korea
| | - Sung Hyuk Heo
- Department of Neurology, Kyung Hee University College of Medicine, Seoul, Republic of Korea
| | - Dae-Il Chang
- Department of Neurology, Kyung Hee University College of Medicine, Seoul, Republic of Korea
| | - Seong-Ho Koh
- Department of Neurology, Hanyang University College of Medicine, Seoul, Republic of Korea; Department of Translational Medicine, Hanyang University Graduate School of Biomedical Science and Engineering, Seoul, Republic of Korea.
| |
Collapse
|
36
|
Jang W, Park HH, Lee KY, Lee YJ, Kim HT, Koh SH. 1,25-dyhydroxyvitamin D3 Attenuates l-DOPA-Induced Neurotoxicity in Neural Stem Cells. Mol Neurobiol 2014; 51:558-70. [DOI: 10.1007/s12035-014-8835-1] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2014] [Accepted: 07/25/2014] [Indexed: 11/27/2022]
|
37
|
Choi NY, Choi H, Park HH, Lee EH, Yu HJ, Lee KY, Joo Lee Y, Koh SH. Neuroprotective effects of amlodipine besylate and benidipine hydrochloride on oxidative stress-injured neural stem cells. Brain Res 2014; 1551:1-12. [PMID: 24440775 DOI: 10.1016/j.brainres.2014.01.016] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [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: 08/02/2013] [Revised: 12/11/2013] [Accepted: 01/07/2014] [Indexed: 12/19/2022]
Abstract
Hypertension is associated with oxidative stress. Amlodipine besylate (AB) and benidipine hydrochloride (BH), which are Ca(2+) antagonists, have been reported to reduce oxidative stress. In this study, we examined the neuroprotective effects of AB and BH on oxidative stress-injured neural stem cells (NSCs), with a focus on the phosphatidylinositol 3-kinase (PI3K) pathway and the extracellular signal-regulated kinase (ERK) pathway. After treatment with H2O2, the viability of NSCs decreased in a concentration-dependent manner; however, co-treatment with AB or BH restored the viability of H2O2-injured NSCs. H2O2 increased free radical production and apoptosis in NSCs, whereas co-treatment with AB or BH attenuated these effects. To evaluate the effects of AB or BH on the H2O2-inhibited proliferation of NSCs, we performed BrdU labeling and colony formation assays and found that NSC proliferation decreased upon H2O2 treatment but that combined treatment with AB or BH restored this proliferation. Western blot analysis showed that AB and BH increased the expression of cell survival-related proteins that were linked with the PI3K and ERK pathways but decreased the expression of cell death-related proteins. To investigate whether the PI3K and ERK pathways were directly involved in the neuroprotective effects of AB and BH on H2O2-treated NSCs, NSCs were pretreated with the PI3K inhibitor, LY294002, or the ERK inhibitor, FR180204, which significantly blocked the effects of AB and BH. Together, our results suggest that AB and BH restore the H2O2-inhibited viability and proliferation of NSCs by inhibiting oxidative stress and by activating the PI3K and ERK pathways.
Collapse
Affiliation(s)
- Na-Young Choi
- Department of Neurology, Hanyang University College of Medicine, Seoul, Republic of Korea; Department of Translational Medicine, Hanyang University Graduate School of Biomedical Science & Engineering, Seoul, Republic of Korea
| | - Hojin Choi
- Department of Neurology, Hanyang University College of Medicine, Seoul, Republic of Korea
| | - Hyun-Hee Park
- Department of Neurology, Hanyang University College of Medicine, Seoul, Republic of Korea
| | - Eun-Hye Lee
- Department of Neurology, Hanyang University College of Medicine, Seoul, Republic of Korea; Department of Translational Medicine, Hanyang University Graduate School of Biomedical Science & Engineering, Seoul, Republic of Korea
| | - Hyun-Jeung Yu
- Department of Neurology, Bundang Jesaeng Hospital, Gyeonggi Province, Republic of Korea
| | - Kyu-Yong Lee
- Department of Neurology, Hanyang University College of Medicine, Seoul, Republic of Korea
| | - Young Joo Lee
- Department of Neurology, Hanyang University College of Medicine, Seoul, Republic of Korea
| | - Seong-Ho Koh
- Department of Neurology, Hanyang University College of Medicine, Seoul, Republic of Korea; Department of Translational Medicine, Hanyang University Graduate School of Biomedical Science & Engineering, Seoul, Republic of Korea.
| |
Collapse
|
38
|
Park HH, Lee KY, Kim S, Lee JW, Choi NY, Lee EH, Lee YJ, Lee SH, Koh SH. Novel vaccine peptide GV1001 effectively blocks β-amyloid toxicity by mimicking the extra-telomeric functions of human telomerase reverse transcriptase. Neurobiol Aging 2013; 35:1255-74. [PMID: 24439482 DOI: 10.1016/j.neurobiolaging.2013.12.015] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2013] [Revised: 11/21/2013] [Accepted: 12/19/2013] [Indexed: 12/17/2022]
Abstract
GV1001 is a 16-amino-acid vaccine peptide derived from the human telomerase reverse transcriptase sequence. We investigated the effects of GV1001 against β-amyloid (Aβ) oligomer-induced neurotoxicity in rat neural stem cells (NSCs). Primary culture NSCs were treated with several concentrations of GV1001 and/or Aβ₂₅₋₃₅ oligomer for 48 hours. GV1001 protected NSCs against the Aβ₂₅₋₃₅ oligomer in a concentration-dependent manner. Aβ₂₅₋₃₅ concentration dependently decreased viability, proliferation, and mobilization of NSCs and GV1001 treatment restored the cells to wild-type levels. Aβ₂₅₋₃₅ increased free radical levels in rat NSCs while combined treatment with GV1001 significantly reduced these levels. In addition, GV1001 treatment of Aβ₂₅₋₃₅-injured NSCs increased the expression level of survival-related proteins, including mitochondria-associated survival proteins, and decreased the levels of death and inflammation-related proteins, including mitochondria-associated death proteins. Together, these results suggest that GV1001 possesses neuroprotective effects against Aβ₂₅₋₃₅ oligomer in NSCs and that these effects are mediated through mimicking the extra-telomeric functions of human telomerase reverse transcriptase, including the induction of cellular proliferation, anti-apoptotic effects, mitochondrial stabilization, and anti-aging and anti-oxidant effects.
Collapse
Affiliation(s)
- Hyun-Hee Park
- Department of Neurology, Hanyang University College of Medicine, Guri, Gyeonggi, Korea
| | - Kyu-Yong Lee
- Department of Neurology, Hanyang University College of Medicine, Guri, Gyeonggi, Korea
| | - Sangjae Kim
- Department of Neuroscience, KAEL-Gemvax Co, Ltd, Seoul, Korea
| | | | - Na-Young Choi
- Department of Translational Medicine, Hanyang University Graduate School of Biomedical Science & Engineering, Seoul, Korea
| | - Eun-Hye Lee
- Department of Translational Medicine, Hanyang University Graduate School of Biomedical Science & Engineering, Seoul, Korea
| | - Young Joo Lee
- Department of Neurology, Hanyang University College of Medicine, Guri, Gyeonggi, Korea
| | - Sang-Hun Lee
- Department of Biochemistry and Molecular Biology, Hanyang University College of Medicine, Seoul, Korea
| | - Seong-Ho Koh
- Department of Neurology, Hanyang University College of Medicine, Guri, Gyeonggi, Korea; Department of Translational Medicine, Hanyang University Graduate School of Biomedical Science & Engineering, Seoul, Korea.
| |
Collapse
|
39
|
Jin GH, Choi GR, Park HH, Lee TS, Lee SB. Defining gross tumor volume using positron emission tomography/computed tomography phantom studies. Annu Int Conf IEEE Eng Med Biol Soc 2013; 2013:2473-6. [PMID: 24110228 DOI: 10.1109/embc.2013.6610041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Tumor volume and standard uptake value (SUV) calculated from positron emission tomography/computed tomography (PET/CT) images differ from their real values. Besides errors introduced by scintillation materials, photomultiplier tubes, and image reconstruction algorithms, measurements are affected by patients' prostheses, body movements, and body shape. To address these problems, we calculated tumor volume and SUV using the standard phantom (PET Phantom-NEMA IEC/2001) and obtained calibration constants. We found that while tumor volume increases with increasing SUV and tumor diameter, it also increases with increasing SUV and decreasing tumor diameter. Conversely, tumor volume decreases with decreasing SUV and tumor diameter and with decreasing SUV and increasing diameter. These results suggest that a correction factor should be applied to SUV and tumor volume obtained from PET/CT images.
Collapse
|
40
|
Choi H, Park HH, Lee KY, Choi NY, Yu HJ, Lee YJ, Park J, Huh YM, Lee SH, Koh SH. Coenzyme Q10 restores amyloid beta-inhibited proliferation of neural stem cells by activating the PI3K pathway. Stem Cells Dev 2013; 22:2112-20. [PMID: 23509892 DOI: 10.1089/scd.2012.0604] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Neurogenesis in the adult brain is important for memory and learning, and the alterations in neural stem cells (NSCs) may be an important part of Alzheimer's disease pathogenesis. The phosphatidylinositol 3-kinase (PI3K) pathway has been suggested to play an important role in neuronal cell survival and is highly involved in adult neurogenesis. Recently, coenzyme Q10 (CoQ10) was found to affect the PI3K pathway. We investigated whether CoQ10 could restore amyloid β (Aβ)25-35 oligomer-inhibited proliferation of NSCs by focusing on the PI3K pathway. To evaluate the effects of CoQ10 on Aβ25-35 oligomer-inhibited proliferation of NSCs, NSCs were treated with several concentrations of CoQ10 and/or Aβ25-35 oligomers. BrdU labeling, Colony Formation Assays, and immunoreactivity of Ki-67, a marker of proliferative activity, showed that NSC proliferation decreased with Aβ25-35 oligomer treatment, but combined treatment with CoQ10 restored it. Western blotting showed that CoQ10 treatment increased the expression levels of p85α PI3K, phosphorylated Akt (Ser473), phosphorylated glycogen synthase kinase-3β (Ser9), and heat shock transcription factor, which are proteins related to the PI3K pathway in Aβ25-35 oligomers-treated NSCs. To confirm a direct role for the PI3K pathway in CoQ10-induced restoration of proliferation of NSCs inhibited by Aβ25-35 oligomers, NSCs were pretreated with a PI3K inhibitor, LY294002; the effects of CoQ10 on the proliferation of NSCs inhibited by Aβ25-35 oligomers were almost completely blocked. Together, these results suggest that CoQ10 restores Aβ25-35 oligomer-inhibited proliferation of NSCs by activating the PI3K pathway.
Collapse
Affiliation(s)
- Hojin Choi
- Department of Neurology, Hanyang University College of Medicine, Seoul, Korea
| | | | | | | | | | | | | | | | | | | |
Collapse
|
41
|
Lee J, Lee KY, Kim YS, Kim HY, Kwon HS, Park HH, Choi NY, Lee E, Son J, Yu HJ, Lee YB, Koh SH. Abstract WP152: The Predictive Value of VEGF And SDF-1α For The Functional Outcome In Patients with Acute Lacunar Infarction Superimposed on Silent Brain Infarction. Stroke 2013. [DOI: 10.1161/str.44.suppl_1.awp152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Introduction
: Stroke is one of the most common causes of chronic disability and death. Although prediction of stroke outcome is important, outcome predictors still remain unclear. Vascular endothelial growth factor (VEGF), stromal cell-derived factor-1α (SDF-1α), macrophage migration inhibitory factor (MIF), and high mobility group box 1 (HMGB1) have been reported to play critical roles in neurovascular remodeling or mediating inflammation at acute and subacute phase after ischemic stroke.
Hypothesis
: Wehypothesized that association between silent infarctions and favorable outcome would be affected by expression of angiogenic factors.
Methods
: From January 2009 to March 2011, 68 consecutive patients with first-ever lacunar infarction (50%) intracranial and extracranial stenosis, use of rtPA and strokes of other determined etiologies. We also excluded patients with acute infection, chronic inflammatory disease and cancers. Serum samples were collected from patients immediately after admission and were stored at -80°C. Serum VEGF, SDF-1α, MIF, and HMGB1 were assessed with commercially available quantitative sandwich ELISA kit. Clinical, laboratory, and image findings including NIH stroke scale were obtained at admission and modified Rankin Scale (mRS) was evaluated after 3 months of stroke onset. A favorable outcome was defined as an mRS between 0 to 1.
Result
: Silent brain infarctions were noted in 31 (45%) of the 68 patients. Patients with silent infarctions were associated with hypertension (p=0.055) and advanced leukoaraiosis (p<0.001).
Conclusions
: In patients with lacunar infarction, previous silent infarctions were associated with favorable outcome and early increased expression of VEGF. We suggest that association between silent infarctions and favorable outcome may be affected by expression of angiogenic factors such as VEGF. On the other hand, the finding that SDF-1α reflecting the severity of lacunar infarctions decreased in acute lacunar infarction patients with silent infarctions might suggest that lesser SDF-1α may be related with lesser damage after acute lacunar infarction and then better outcome.
Collapse
Affiliation(s)
- Jinho Lee
- Hanyang Univ College of Medicine, Seoul, Korea, Republic of
| | - Kyu-Yong Lee
- Hanyang Univ College of Medicine, Seoul, Korea, Republic of
| | - Young-Seo Kim
- Hanyang Univ College of Medicine, Seoul, Korea, Republic of
| | - Hyun Young Kim
- Hanyang Univ College of Medicine, Seoul, Korea, Republic of
| | - Hyuk Sung Kwon
- Hanyang Univ College of Medicine, Seoul, Korea, Republic of
| | - Hyun-Hee Park
- Hanyang Univ College of Medicine, Seoul, Korea, Republic of
| | - Na-Young Choi
- Hanyang Univ College of Medicine, Seoul, Korea, Republic of
| | - Eunhye Lee
- Hanyang Univ College of Medicine, Seoul, Korea, Republic of
| | - Jeongu Son
- Hanyang Univ College of Medicine, Seoul, Korea, Republic of
| | - Hyun-Jeung Yu
- Bundang Jesaeng General Hosp, Seongnam, Korea, Republic of
| | | | - Seong-Ho Koh
- Hanyang Univ College of Medicine, Seoul, Korea, Republic of
| |
Collapse
|
42
|
Lee J, Lee KY, Kim YS, Kim HY, Kwon HS, Park HH, Choi NY, Lee E, Son J, Yu HJ, Lee YB, Koh SH. Abstract WP149: Anti-inflammatory Effect Of Cilostazol On Silent Brain Infarction. Stroke 2013. [DOI: 10.1161/str.44.suppl_1.awp149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Introduction:
Silent brain infarcts (SBI) are seen on brain computed topography or magnetic resonance imaging without any clinical symptoms suggestive of transient ischemic attack or stroke. SBI are associated with the risk of subsequent stroke and dementia. Various inflammatory markers have been reported to correlate with SBI. After the Cilostazol Stroke Prevention Study, many studies have focused on anti-inflammatory effect of cilostazol.
Hypothesis:
We investigated the anti-inflammatory effect of cilostazol in the patients with silent brain infarcts by measuring temporal profile of inflammatory markers.
Methods:
We prospectively and consecutively enrolled 26 patients with silent brain infarcts, who agreed signed informed consent, and then treated with cilostazol (200mg/day) for 3 months. Several inflammatory markers including macrophage migration inhibitory factor (MIF), stromal cell-derived factor-1 (SDF-1),vascular endothelial growth factor (VEGF), visfatin, and matrix metalloproteinase 9 (MMP-9) were repeatedly measured at baseline, 1 week, and 3 months.
Results:
Levels of MIF, visfatin, and MMP-9 were significantly decreased 3months after cilostazol treatmentwhen compared with baseline and 1week (p < 0.05). There is no significant difference in SDF-1 and VEGF.
Conclusion:
After cilostazol treatment for 3 months, MIF, visfatin, and MMP-9 among various inflammatory markers notably decreased. MIF has been reported as a pro-inflammatory marker by promoting cell death and facilitating the atherogenesis process. Visfatin stimulates the release of cytokines and is induced by inflammatory stimuli in cells involved in innate immunity, such as neutrophils, monocytes, macrophages, and epithelial cells. MMP-9 has been shown to contribute to blood-brain barrier disruption, infarct formation and hemorrhagic transformation. Therefore, these factors play important roles in pathogenesis or consequence after ischemic stroke. Based on our findings, we cautiously suggest that cilostazol has anti-inflammatory effect affecting inflammatory markers such as MIF, visfatin and MMP-9 and further investigation about relationship between these markers and clinical significance is needed.
Collapse
Affiliation(s)
- Jinho Lee
- Hanyang Univ College of Medicine, Seoul, Korea, Republic of
| | - Kyu-Yong Lee
- Hanyang Univ College of Medicine, Seoul, Korea, Republic of
| | - Young-Seo Kim
- Hanyang Univ College of Medicine, Seoul, Korea, Republic of
| | - Hyun Young Kim
- Hanyang Univ College of Medicine, Seoul, Korea, Republic of
| | - Hyuk Sung Kwon
- Hanyang Univ College of Medicine, Seoul, Korea, Republic of
| | - Hyun-Hee Park
- Hanyang Univ College of Medicine, Seoul, Korea, Republic of
| | - Na-Young Choi
- Hanyang Univ College of Medicine, Seoul, Korea, Republic of
| | - Eunhye Lee
- Hanyang Univ College of Medicine, Seoul, Korea, Republic of
| | - Jeongu Son
- Hanyang Univ College of Medicine, Seoul, Korea, Republic of
| | - Hyun-Jeung Yu
- Bundang Jesaeng General Hosp, Seongnam, Korea, Republic of
| | | | - Seong-Ho Koh
- Hanyang Univ College of Medicine, Seoul, Korea, Republic of
| |
Collapse
|
43
|
Lee J, Lee KY, Kim YS, Kim HY, Kwon HS, Park HH, Choi NY, Lee E, Son J, Yu HJ, Lee YB, Koh SH. Abstract TP401: Inflated Expectations about Stem Cell Therapy in Patients With Chronic Stroke. Stroke 2013. [DOI: 10.1161/str.44.suppl_1.atp401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Introduction:
Stem cell therapy (SCT) has been proposed for the treatment of neurological disorders. Although there isinsufficient clinical evidence to support its efficacy, unproven SCTs are being performed worldwide.
Hypothesis:
In this study, we investigated the perspectives and expectations of chronic ischemic stroke patients and physicians about SCTs.
Methods:
A total of 250 chronic ischemic stroke patients were interviewed at 4 hospitals. Structured open and closed questions about SCT for chronic stroke were asked by trained interviewers using the conventional in-person method. In addition, 250 stroke-related physicians were randomly interviewed via an e-mail questionnaire.
Results:
Of the 250 patients (mean 63 years, 70% male), 121 (46%) responded that they wanted to receive SCT in spite of its unknown side effects. Around 60% of the patients anticipated physical, emotional, and psychological improvement after SCT, and 158 (63%) believed that SCT might prevent strokes. However, physicians had much lower expectations about the effectiveness of SCTs, which was not in line with patient expectations. Multivariate analysis revealed that male gender (OR: 2.00, 95% CI: 1.10-3.64), longer disease duration (OR: 1.01, 95% CI:1.00-1.02), higher modified Rankin Scale score (OR: 1.30, 95% CI 1.06-1.60), and familiarity with stem cells (OR: 1.86, 95% CI: 1.10-3.15) were independently associated with wanting SCT. The major source of information about SCT was television (68%), and the most reliable source was physicians (49%).
Conclusion:
Patients have unfounded expectations that SCT will improve their functioning. Considering our finding that the major source of information on stem cells is media channels but not the physician, to decrease patients’ inappropriate exposure, doctors should make more effort to educate patients using mass media with accurate information.
Collapse
Affiliation(s)
- Jinho Lee
- Hanyang Univ College of Medicine, Seoul, Korea, Republic of
| | - Kyu-Yong Lee
- Hanyang Univ College of Medicine, Seoul, Korea, Republic of
| | - Young-Seo Kim
- Hanyang Univ College of Medicine, Seoul, Korea, Republic of
| | - Hyun Young Kim
- Hanyang Univ College of Medicine, Seoul, Korea, Republic of
| | - Hyuk Sung Kwon
- Hanyang Univ College of Medicine, Seoul, Korea, Republic of
| | - Hyun-Hee Park
- Hanyang Univ College of Medicine, Seoul, Korea, Republic of
| | - Na-Young Choi
- Hanyang Univ College of Medicine, Seoul, Korea, Republic of
| | - Eunhye Lee
- Hanyang Univ College of Medicine, Seoul, Korea, Republic of
| | - Jeongu Son
- Hanyang Univ College of Medicine, Seoul, Korea, Republic of
| | - Hyun-Jeung Yu
- Bundang Jesaeng General Hosp, Seongnam, Korea, Republic of
| | | | - Seong-Ho Koh
- Hanyang Univ College of Medicine, Seoul, Korea, Republic of
| |
Collapse
|
44
|
Park J, Park HH, Choi H, Kim YS, Yu HJ, Lee KY, Lee YJ, Kim SH, Koh SH. Coenzyme Q10 protects neural stem cells against hypoxia by enhancing survival signals. Brain Res 2012; 1478:64-73. [PMID: 23046589 DOI: 10.1016/j.brainres.2012.08.025] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2012] [Revised: 08/11/2012] [Accepted: 08/15/2012] [Indexed: 12/17/2022]
Abstract
Recanalization and secondary prevention are the main therapeutic strategies for acute ischemic stroke. Neuroprotective therapies have also been investigated despite unsuccessful clinical results. Coenzyme Q10 (CoQ10), which is an essential cofactor for electron transport in mitochondria, is known to have an antioxidant effect. We investigated the protective effects of CoQ10 against hypoxia in neural stem cells (NSCs). We measured cell viability and levels of intracellular signaling proteins after treatment with several concentrations of CoQ10 under hypoxia-reperfusion. CoQ10 protected NSCs against hypoxia-reperfusion in a concentration-dependent manner by reducing growth inhibition and inhibiting free radical formation. It increased the expression of a number of survival-related proteins such as phosphorylated Akt (pAkt), phosphorylated glycogen synthase kinase 3-β (pGSK3-β), and B-cell lymphoma 2 (Bcl-2) in NSCs injured by hypoxia-reperfusion and reduced the expression of death-related proteins such as cleaved caspase-3. We conclude that CoQ10 has effects against hypoxia-reperfusion induced damage to NSCs by enhancing survival signals and decreasing death signals.
Collapse
Affiliation(s)
- Jinse Park
- Department of Neurology, Hanyang University College of Medicine, Seoul, Korea
| | | | | | | | | | | | | | | | | |
Collapse
|
45
|
|
46
|
Park HH, Noh MJ. The Influence of Consumers' Innovativeness and Trust on Acceptance Intention of Sensor-based Smart Clothing. ACTA ACUST UNITED AC 2012. [DOI: 10.5805/ksci.2012.14.1.024] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
47
|
Choi H, Park HH, Koh SH, Choi NY, Yu HJ, Park J, Lee YJ, Lee KY. Coenzyme Q10 protects against amyloid beta-induced neuronal cell death by inhibiting oxidative stress and activating the P13K pathway. Neurotoxicology 2012; 33:85-90. [DOI: 10.1016/j.neuro.2011.12.005] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2011] [Revised: 12/02/2011] [Accepted: 12/06/2011] [Indexed: 01/24/2023]
|
48
|
Lee YJ, Park HH, Koh SH, Choi NY, Lee KY. Amlodipine besylate and amlodipine camsylate prevent cortical neuronal cell death induced by oxidative stress. J Neurochem 2011; 119:1262-70. [PMID: 21988238 DOI: 10.1111/j.1471-4159.2011.07529.x] [Citation(s) in RCA: 17] [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] [Indexed: 12/19/2022]
Abstract
We examined the neuroprotective effects of the long-acting third-generation dihydropyridine Ca(2+) antagonists, amlodipine besylate (AB) and amlodipine camsylate (AC), on neuronal cell death induced by oxidative stress. Cell viability and levels of free radicals and intracellular signaling proteins were measured after treating primary cultures of cortical neurons with AB, AC, and/or hydrogen peroxide (H(2) O(2) ) under various conditions. Cell viability was not affected by concentrations of AB or AC up to 5 μM but decreased at higher concentrations. Following H(2) O(2) exposure, the viability of cortical neurons decreased in a concentration-dependent manner; however, treatment with AB or AC up to 5 μM restored the viability of H(2) O(2) -injured cortical neurons. Treatment with H(2) O(2) increased the level of free radicals in cortical neurons, and pre-treatment with AB or AC counteracted this in a dose-dependent manner. Similarly, treatment with AB or AC reduced the declines in p85aPI3K, phosphorylated Akt, phosphorylated GSK-3β, heat-shock transcription factor-1, and Bcl-2 induced by H(2) O(2) , as well as the increases in cyclooxygenase-2, cytosolic cytochrome c, cleaved caspase 9, and cleaved caspase 3. Our results indicate that AB and AC exert similar neuroprotective effects by reducing oxidative stress, enhancing survival signals, and inhibiting death signals.
Collapse
Affiliation(s)
- Young Joo Lee
- Department of Neurology, Hanyang University College of Medicine, Seoul, Korea
| | | | | | | | | |
Collapse
|
49
|
Lee KY, Koh SH, Kim S, Park HH, Lee YJ. Hetastarch reduces neuronal cell death caused by oxidative stress. Drug Dev Res 2011. [DOI: 10.1002/ddr.20447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
50
|
Kim W, Park HH, Park CS, Cho EK, Kang WY, Lee ES, Kim W. Impaired endothelial function in medical personnel working sequential night shifts. Int J Cardiol 2011; 151:377-8. [PMID: 21764158 DOI: 10.1016/j.ijcard.2011.06.109] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2011] [Accepted: 06/25/2011] [Indexed: 11/27/2022]
|