1
|
Jang D, Yun TR, Lee CY, Kwon YK, Kim CE. GPT-4 can pass the Korean National Licensing Examination for Korean Medicine Doctors. PLOS Digit Health 2023; 2:e0000416. [PMID: 38100393 PMCID: PMC10723673 DOI: 10.1371/journal.pdig.0000416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 11/20/2023] [Indexed: 12/17/2023]
Abstract
Traditional Korean medicine (TKM) emphasizes individualized diagnosis and treatment. This uniqueness makes AI modeling difficult due to limited data and implicit processes. Large language models (LLMs) have demonstrated impressive medical inference, even without advanced training in medical texts. This study assessed the capabilities of GPT-4 in TKM, using the Korean National Licensing Examination for Korean Medicine Doctors (K-NLEKMD) as a benchmark. The K-NLEKMD, administered by a national organization, encompasses 12 major subjects in TKM. GPT-4 answered 340 questions from the 2022 K-NLEKMD. We optimized prompts with Chinese-term annotation, English translation for questions and instruction, exam-optimized instruction, and self-consistency. GPT-4 with optimized prompts achieved 66.18% accuracy, surpassing both the examination's average pass mark of 60% and the 40% minimum for each subject. The gradual introduction of language-related prompts and prompting techniques enhanced the accuracy from 51.82% to its maximum accuracy. GPT-4 showed low accuracy in subjects including public health & medicine-related law, internal medicine (2), and acupuncture medicine which are highly localized in Korea and TKM. The model's accuracy was lower for questions requiring TKM-specialized knowledge than those that did not. It exhibited higher accuracy in diagnosis-based and recall-based questions than in intervention-based questions. A significant positive correlation was observed between the consistency and accuracy of GPT-4's responses. This study unveils both the potential and challenges of applying LLMs to TKM. These findings underline the potential of LLMs like GPT-4 in culturally adapted medicine, especially TKM, for tasks such as clinical assistance, medical education, and research. But they also point towards the necessity for the development of methods to mitigate cultural bias inherent in large language models and validate their efficacy in real-world clinical settings.
Collapse
Affiliation(s)
- Dongyeop Jang
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam, Gyeonggi-do, Korea
| | - Tae-Rim Yun
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam, Gyeonggi-do, Korea
| | - Choong-Yeol Lee
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam, Gyeonggi-do, Korea
| | - Young-Kyu Kwon
- Division of Integrated Art Therapy, School of Korean Medicine, Pusan National University, Yangsan, Gyeongsangnam-do, Korea
- Division of Longevity and Biofunctional Medicine, School of Korean Medicine, Pusan National University, Yangsan, Gyeongsangnam-do, Korea
| | - Chang-Eop Kim
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam, Gyeonggi-do, Korea
- Department of Neurobiology, Stanford University School of Medicine, Stanford, California, United States of America
| |
Collapse
|
2
|
Jin SP, Suh JH, Kim CE, Oh IG, Seo EY, Kim MK, Yoon KN, Chung JH. Functionally similar genes exhibit comparable/similar time-course expression kinetics in the UV-induced photoaged mouse model. PLoS One 2023; 18:e0290358. [PMID: 37943888 PMCID: PMC10635544 DOI: 10.1371/journal.pone.0290358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 08/07/2023] [Indexed: 11/12/2023] Open
Abstract
Skin photoaging induced by ultraviolet (UV) irradiation contributes to the formation of thick and coarse wrinkles. Humans are exposed to UV light throughout their lives. Therefore, it is crucial to determine the time-sequential effects of UV on the skin. In this study, we irradiated the mouse back skin with UV light for eight weeks and observed the changes in gene expressions via microarray analysis every week. There were more downregulated genes (514) than upregulated genes (123). The downregulated genes had more functional diversity than the upregulated genes. Additionally, the number of downregulated genes did not increase in a time-dependent manner. Instead, time-dependent kinetic patterns were observed. Interestingly, each kinetic cluster harbored functionally enriched gene sets. Since collagen changes in the dermis are considered to be a major cause of photoaging, we hypothesized that other gene sets contributing to photoaging would exhibit kinetics similar to those of the collagen-regulatory genes identified in this study. Accordingly, co-expression network analysis was conducted using 11 well-known collagen-regulatory seed genes to predict genes with similar kinetics. We ranked all downregulated genes from 1 to 504 based on their expression levels, and the top 50 genes were suggested to be involved in the photoaging process. Additionally, to validate and support our identified top 50 gene lists, we demonstrated that the genes (FN1, CCDC80, PRELP, and TGFBR3) we discovered are downregulated by UV irradiation in cultured human fibroblasts, leading to decreased collagen levels, which is indicative of photoaging processes. Overall, this study demonstrated the time-sequential genetic changes in chronically UV-irradiated skin and proposed 50 genes that are involved in the mechanisms of photoaging.
Collapse
Affiliation(s)
- Seon-Pil Jin
- Department of Dermatology, Seoul National University Hospital, Seoul, Republic of Korea
- Department of Dermatology, College of Medicine, Seoul National University, Seoul, Republic of Korea
- Institute of Human-Environment Interface Biology, Medical Research Center, Seoul National University, Seoul, Republic of Korea
| | - Joong Heon Suh
- Department of Dermatology, Seoul National University Hospital, Seoul, Republic of Korea
- Department of Dermatology, College of Medicine, Seoul National University, Seoul, Republic of Korea
- Institute of Human-Environment Interface Biology, Medical Research Center, Seoul National University, Seoul, Republic of Korea
- Department of Biomedical Sciences, Graduate School, Seoul National University Graduate School, Seoul, Republic of Korea
| | - Chang-Eop Kim
- Department of Physiology, Department of Physiology, Gachon University College of Korean Medicine, Seongnam, Republic of Korea
| | - Inn Gyung Oh
- Department of Dermatology, Seoul National University Hospital, Seoul, Republic of Korea
- Department of Dermatology, College of Medicine, Seoul National University, Seoul, Republic of Korea
- Institute of Human-Environment Interface Biology, Medical Research Center, Seoul National University, Seoul, Republic of Korea
| | - Eun Young Seo
- Department of Dermatology, Seoul National University Hospital, Seoul, Republic of Korea
- Department of Dermatology, College of Medicine, Seoul National University, Seoul, Republic of Korea
- Institute of Human-Environment Interface Biology, Medical Research Center, Seoul National University, Seoul, Republic of Korea
| | - Min-Kyoung Kim
- Department of Dermatology, Seoul National University Hospital, Seoul, Republic of Korea
- Department of Dermatology, College of Medicine, Seoul National University, Seoul, Republic of Korea
- Institute of Human-Environment Interface Biology, Medical Research Center, Seoul National University, Seoul, Republic of Korea
| | - Kyeong-No Yoon
- Department of Dermatology, Seoul National University Hospital, Seoul, Republic of Korea
- Department of Dermatology, College of Medicine, Seoul National University, Seoul, Republic of Korea
- Institute of Human-Environment Interface Biology, Medical Research Center, Seoul National University, Seoul, Republic of Korea
- Department of Biomedical Sciences, Graduate School, Seoul National University Graduate School, Seoul, Republic of Korea
| | - Jin Ho Chung
- Department of Dermatology, Seoul National University Hospital, Seoul, Republic of Korea
- Department of Dermatology, College of Medicine, Seoul National University, Seoul, Republic of Korea
- Institute of Human-Environment Interface Biology, Medical Research Center, Seoul National University, Seoul, Republic of Korea
- Department of Biomedical Sciences, Graduate School, Seoul National University Graduate School, Seoul, Republic of Korea
| |
Collapse
|
3
|
Park SY, Kim KS, Lee WY, Kim CE, Lee S. Integrative Approach to Identifying System-Level Mechanisms of Chung-Sang-Bo-Ha-Hwan's Influence on Respiratory Tract Diseases: A Network Pharmacological Analysis with Experimental Validation. Plants (Basel) 2023; 12:3024. [PMID: 37687271 PMCID: PMC10489874 DOI: 10.3390/plants12173024] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 08/19/2023] [Accepted: 08/21/2023] [Indexed: 09/10/2023]
Abstract
Chung-Sang-Bo-Ha-Hwan (CSBHH) is an herbal prescription widely used to treat various chronic respiratory diseases. To investigate the system-level treatment mechanisms of CSBHH in respiratory tract diseases, we identified 56 active ingredients of CSBHH and evaluated the degree of overlap between their targets and respiratory tract disease-associated proteins. We then investigated the respiratory tract disease-related signaling pathways associated with CSBHH targets. Enrichment analysis showed that the CSBHH targets were significantly associated with various signaling pathways related to inflammation, alveolar structure, and tissue fibrosis. Experimental validation was conducted using phorbol-12-myristate-13-acetate (PMA)-stimulated NCI-H292 cells by analyzing the mRNA expression levels of biomarkers (IL-1β and TNF-α for inflammation; GSTP1, GSTM1, and PTEN for apoptosis) derived from network pharmacological analysis, in addition to the mucin genes MUC5AC and MUC2, to investigate the phlegm-expelling effect of CSBHH. The mRNA expression levels of these genes were consistent with network pharmacological predictions in a concentration-dependent manner. These results suggest that the therapeutic mechanisms of CSBHH in respiratory tract diseases could be attributed to the simultaneous action of multiple active ingredients in the herbal prescription.
Collapse
Affiliation(s)
- Sa-Yoon Park
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam 13120, Republic of Korea; (S.-Y.P.); (W.-Y.L.)
| | - Kang-Sub Kim
- College of Korean Medicine, Gachon University, Seongnam 13120, Republic of Korea;
| | - Won-Yung Lee
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam 13120, Republic of Korea; (S.-Y.P.); (W.-Y.L.)
| | - Chang-Eop Kim
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam 13120, Republic of Korea; (S.-Y.P.); (W.-Y.L.)
| | - Sullim Lee
- Department of Life Science, College of Bio-Nano Technology, Gachon University, Seongnam 13120, Republic of Korea
| |
Collapse
|
4
|
Park SY, Kim YW, Song YR, Bak SB, Jang YP, Kim IK, Kim JH, Kim CE. Compound-level identification of sasang constitution type-specific personalized herbal medicine using data science approach. Heliyon 2023; 9:e13692. [PMID: 36852049 PMCID: PMC9957892 DOI: 10.1016/j.heliyon.2023.e13692] [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: 08/12/2022] [Revised: 02/01/2023] [Accepted: 02/07/2023] [Indexed: 02/16/2023] Open
Abstract
Introduction Sasang Constitutional Medicine (SCM) is a type of traditional Korean medicine where patients are classified as one of four Sasang constitution types (Sasang type) and medications consisting of medicinal herbs are prescribed according to the Sasang type. Despite the importance of personalized medicine, the operation mechanism is largely unknown. To gain a better understanding, we investigated the compound information that composes Sasang type-specific personalized herbal medicines on both multivariate and univariate levels. Methods Five machine learning classifiers including extremely randomized trees (ERT) were trained to investigate whether the Sasang type can be explained by compound information at the multivariate level. Hierarchical clustering was conducted to determine whether compounds are processed distributedly or specifically. Taxonomic and biosynthetic analyses were conducted on these compounds. A univariate level statistical test was conducted to provide more robust Sasang type-specific compound information. Results Using the trained ERT classifier, sixty important compounds were extracted. The sixty compounds were clustered into three groups, corresponding to each Sasang type-prominent compounds, suggesting that most compounds have specific preference for the Sasang type. Structural and biosynthetic characteristics of these Sasang type-prominent compounds were determined based on taxonomy and pathway analyses. Fourteen compounds showed statistically significant relevance with the Sasang type. Additionally, we predicted the Sasang type of unknown herbs, which were confirmed by their biological effects in functional assays. Conclusion This study investigated the personalized herbal medicines of the SCM using compound information. This study provided information on the chemical characteristics of the compounds that are essential for classifying the Sasang type of medicinal herbs, as well as predictions regarding the Sasang type of the commonly used but unidentified medicinal herbs.
Collapse
Affiliation(s)
- Sa-Yoon Park
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam, 13120, Republic of Korea
| | - Young Woo Kim
- Department of Computer Science and Engineering, Kyungpook National University, Daegu, 41566, Republic of Korea.,School of Korean Medicine, Dongguk University, Gyeongju, 38066, Republic of Korea
| | - Yu Rim Song
- School of Korean Medicine, Dongguk University, Gyeongju, 38066, Republic of Korea
| | - Seon Been Bak
- School of Korean Medicine, Dongguk University, Gyeongju, 38066, Republic of Korea
| | - Young Pyo Jang
- College of Pharmacy, Kyung Hee University, Seoul, 02447, South Korea
| | - Il-Kon Kim
- Department of Computer Science and Engineering, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Ji-Hwan Kim
- Department of Sasang Constitutional Medicine, Gil Hospital of Korean Medicine, Gachon University, Incheon, 21565, Republic of Korea
| | - Chang-Eop Kim
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam, 13120, Republic of Korea
| |
Collapse
|
5
|
Jang D, Lee MJ, Kim KS, Kim CE, Jung JH, Cho M, Hong BH, Park SJ, Kang KS. Network Pharmacological Analysis on the Herbal Combinations for Mitigating Inflammation in Respiratory Tracts and Experimental Evaluation. Healthcare (Basel) 2023; 11:healthcare11010143. [PMID: 36611603 PMCID: PMC9819683 DOI: 10.3390/healthcare11010143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 12/29/2022] [Accepted: 12/30/2022] [Indexed: 01/06/2023] Open
Abstract
The regulation of inflammatory mediators, such as TNF-α, IL-6, IL-1β, and leukotriene B4, could play a crucial role in suppressing inflammatory diseases such as COVID-19. In this study, we investigated the potential mechanisms of drug combinations comprising Ephedrae Herba, Schisandra Fructus, Platycodonis Radix, and Ginseng Radix; validated the anti-inflammatory effects of these drugs; and determined the optimal dose of the drug combinations. By constructing a herb-compound-target network, associations were identified between the herbs and tissues (such as bronchial epithelial cells and lung) and pathways (such as the TNF, NF-κB, and calcium signaling pathways). The drug combinations exerted anti-inflammatory effects in the RAW264.7 cell line treated with lipopolysaccharide by inhibiting the production of nitric oxide and inflammatory mediators, including TNF-α, IL-6, IL-1β, and leukotriene B4. Notably, the drug combinations inhibited PMA-induced MUC5AC mRNA expression in NCI-H292 cells. A design space analysis was carried out to determine the optimal herbal medicine combinations using the design of experiments and synergy score calculation. Consequently, a combination study of the herbal preparations confirmed their mitigating effect on inflammation in COVID-19.
Collapse
Affiliation(s)
- Dongyeop Jang
- College of Korean Medicine, Gachon University, Seongnam 13120, Republic of Korea
| | - Myong Jin Lee
- College of Korean Medicine, Gachon University, Seongnam 13120, Republic of Korea
| | - Kang Sub Kim
- College of Korean Medicine, Gachon University, Seongnam 13120, Republic of Korea
| | - Chang-Eop Kim
- College of Korean Medicine, Gachon University, Seongnam 13120, Republic of Korea
| | - Jong Ho Jung
- Chong Kun Dang (CKD) Pharm Research Institute, Yongin 16995, Republic of Korea
| | - Minkwan Cho
- Chong Kun Dang (CKD) Pharm Research Institute, Yongin 16995, Republic of Korea
| | - Bo-Hee Hong
- Chong Kun Dang (CKD) Pharm Research Institute, Yongin 16995, Republic of Korea
| | - Shin Jung Park
- Chong Kun Dang (CKD) Pharm Research Institute, Yongin 16995, Republic of Korea
- Correspondence: (S.J.P.); (K.S.K.); Tel.: +82-32-749-4514 (S.J.P.); +82-31-750-5402 (K.S.K.)
| | - Ki Sung Kang
- College of Korean Medicine, Gachon University, Seongnam 13120, Republic of Korea
- Correspondence: (S.J.P.); (K.S.K.); Tel.: +82-32-749-4514 (S.J.P.); +82-31-750-5402 (K.S.K.)
| |
Collapse
|
6
|
Lee WY, Lee CY, Kim CE. Predicting activatory and inhibitory drug-target interactions based on structural compound representations and genetically perturbed transcriptomes. PLoS One 2023; 18:e0282042. [PMID: 37043429 PMCID: PMC10096289 DOI: 10.1371/journal.pone.0282042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 02/07/2023] [Indexed: 04/13/2023] Open
Abstract
A computational approach to identifying drug-target interactions (DTIs) is a credible strategy for accelerating drug development and understanding the mechanisms of action of small molecules. However, current methods to predict DTIs have mainly focused on identifying simple interactions, requiring further experiments to understand mechanism of drug. Here, we propose AI-DTI, a novel method that predicts activatory and inhibitory DTIs by combining the mol2vec and genetically perturbed transcriptomes. We trained the model on large-scale DTIs with MoA and found that our model outperformed a previous model that predicted activatory and inhibitory DTIs. Data augmentation of target feature vectors enabled the model to predict DTIs for a wide druggable targets. Our method achieved substantial performance in an independent dataset where the target was unseen in the training set and a high-throughput screening dataset where positive and negative samples were explicitly defined. Also, our method successfully rediscovered approximately half of the DTIs for drugs used in the treatment of COVID-19. These results indicate that AI-DTI is a practically useful tool for guiding drug discovery processes and generating plausible hypotheses that can reveal unknown mechanisms of drug action.
Collapse
Affiliation(s)
- Won-Yung Lee
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam, Republic of Korea
| | - Choong-Yeol Lee
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam, Republic of Korea
| | - Chang-Eop Kim
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam, Republic of Korea
| |
Collapse
|
7
|
Bae H, Park SY, Kim SJ, Kim CE. Cerebellum as a kernel machine: A novel perspective on expansion recoding in granule cell layer. Front Comput Neurosci 2022; 16:1062392. [PMID: 36618271 PMCID: PMC9815768 DOI: 10.3389/fncom.2022.1062392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Accepted: 11/30/2022] [Indexed: 12/24/2022] Open
Abstract
Sensorimotor information provided by mossy fibers (MF) is mapped to high-dimensional space by a huge number of granule cells (GrC) in the cerebellar cortex's input layer. Significant studies have demonstrated the computational advantages and primary contributor of this expansion recoding. Here, we propose a novel perspective on the expansion recoding where each GrC serve as a kernel basis function, thereby the cerebellum can operate like a kernel machine that implicitly use high dimensional (even infinite) feature spaces. We highlight that the generation of kernel basis function is indeed biologically plausible scenario, considering that the key idea of kernel machine is to memorize important input patterns. We present potential regimes for developing kernels under constrained resources and discuss the advantages and disadvantages of each regime using various simulation settings.
Collapse
Affiliation(s)
- Hyojin Bae
- Department of Physiology, Gachon University College of Korean Medicine, Seongnam, South Korea
| | - Sa-Yoon Park
- Department of Physiology, Gachon University College of Korean Medicine, Seongnam, South Korea
| | - Sang Jeong Kim
- Department of Physiology, Seoul National University College of Medicine, Seoul, South Korea,*Correspondence: Sang Jeong Kim,
| | - Chang-Eop Kim
- Department of Physiology, Gachon University College of Korean Medicine, Seongnam, South Korea,Chang-Eop Kim,
| |
Collapse
|
8
|
Park M, Kim MH, Park SY, Choi I, Kim CE. Individualized Diagnosis and Prescription in Traditional Medicine: Decision-Making Process Analysis and Machine Learning-Based Analysis Tool Development. Am J Chin Med 2022; 50:1827-1844. [PMID: 36056467 DOI: 10.1142/s0192415x2250077x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
While pattern identification (PI) is an essential process in traditional medicine (TM), it is difficult to objectify since it relies heavily on implicit knowledge. Therefore, this study aimed to propose a machine learning (ML)-based analysis tool to evaluate the clinical decision-making process of PI in terms of explicit and implicit knowledge, and to observe the actual process by which this knowledge affects the choice of diagnosis and treatment in individual TM doctors. Clinical data for the development of the analysis tool were collected using a questionnaire administered to allergic rhinitis (AR) patients and the diagnosis and prescription results of TM doctors based on the completed AR questionnaires. Explicit knowledge and implicit knowledge were defined based on the doctors' explicit scoring and feature evaluations of ML models, respectively. There were many differences between the explicit and implicit importance scores in this study. Implicit importance is more closely related to explicit importance in prescription than in diagnosis. The analysis results for eight doctors showed that our tool could successfully identify explicit and implicit knowledge in the PI process. This is the first study to evaluate the actual process by which explicit and implicit knowledge affect the choice of individual TM doctors and to identify assessment tools for the definition of the decision-making process in diagnosing PI and prescribing herbal treatments by TM clinicians. The assessment tool suggested in this study could be broadly used for the standardization of precision medicine, including TM therapeutics.
Collapse
Affiliation(s)
- Musun Park
- KM Data Division, Korea Institute of Oriental Medicine, Daejeon, Republic of Korea
| | - Min Hee Kim
- Department of Ophthalmology, Otolaryngology, and Dermatology, Kyung Hee University College of Korean Medicine, Kyung Hee University, Hospital at Gangdong, Seoul, Republic of Korea
| | - So-Young Park
- Department of Ophthalmology, Otolaryngology, and Dermatology, Kyung Hee University College of Korean Medicine, Kyung Hee University, Hospital at Gangdong, Seoul, Republic of Korea
| | - Inhwa Choi
- Department of Ophthalmology, Otolaryngology, and Dermatology, Kyung Hee University College of Korean Medicine, Kyung Hee University, Hospital at Gangdong, Seoul, Republic of Korea
| | - Chang-Eop Kim
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam, Republic of Korea
| |
Collapse
|
9
|
Lee WY, Lee CY, Lee JS, Kim CE. Identifying Candidate Flavonoids for Non-Alcoholic Fatty Liver Disease by Network-Based Strategy. Front Pharmacol 2022; 13:892559. [PMID: 35721123 PMCID: PMC9204489 DOI: 10.3389/fphar.2022.892559] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 04/22/2022] [Indexed: 11/16/2022] Open
Abstract
Nonalcoholic fatty liver disease (NAFLD) is the most common type of chronic liver disease and lacks guaranteed pharmacological therapeutic options. In this study, we applied a network-based framework for comprehensively identifying candidate flavonoids for the prevention and/or treatment of NAFLD. Flavonoid-target interaction information was obtained from combining experimentally validated data and results obtained using a recently developed machine-learning model, AI-DTI. Flavonoids were then prioritized by calculating the network proximity between flavonoid targets and NAFLD-associated proteins. The preventive effects of the candidate flavonoids were evaluated using FFA-induced hepatic steatosis in HepG2 and AML12 cells. We reconstructed the flavonoid-target network and found that the number of re-covered compound-target interactions was significantly higher than the chance level. Proximity scores have successfully rediscovered flavonoids and their potential mechanisms that are reported to have therapeutic effects on NAFLD. Finally, we revealed that discovered candidates, particularly glycitin, significantly attenuated lipid accumulation and moderately inhibited intracellular reactive oxygen species production. We further confirmed the affinity of glycitin with the predicted target using molecular docking and found that glycitin targets are closely related to several proteins involved in lipid metabolism, inflammatory responses, and oxidative stress. The predicted network-level effects were validated at the levels of mRNA. In summary, our study offers and validates network-based methods for the identification of candidate flavonoids for NAFLD.
Collapse
Affiliation(s)
- Won-Yung Lee
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam, South Korea
- Department of Herbal Formula, College of Korean Medicine, Dongguk University, Goyang-si, South Korea
| | - Choong-Yeol Lee
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam, South Korea
| | - Jin-Seok Lee
- Institute of Bioscience and Integrative Medicine, Daejeon Oriental Hospital of Daejeon University, Daejeon, South Korea
- *Correspondence: Jin-Seok Lee, ; Chang-Eop Kim,
| | - Chang-Eop Kim
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam, South Korea
- *Correspondence: Jin-Seok Lee, ; Chang-Eop Kim,
| |
Collapse
|
10
|
Jang D, Lee E, Lee S, Kwon Y, Kang KS, Kim CE, Kim D. System-level investigation of anti-obesity effects and the potential pathways of Cordyceps militaris in ovariectomized rats. BMC Complement Med Ther 2022; 22:132. [PMID: 35550138 PMCID: PMC9102749 DOI: 10.1186/s12906-022-03608-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 10/07/2021] [Accepted: 04/21/2022] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Cordyceps species have been used as tonics to enhance energy, stamina, and libido in traditional Asian medicine for more than 1600 years, indicating their potential for improving reproductive hormone disorders and energy metabolic diseases. Among Cordyceps, Cordyceps militaris has been reported to prevent metabolic syndromes including obesity and benefit the reproductive hormone system, suggesting that Cordyceps militaris can also regulate obesity induced by the menopause. We investigated the effectiveness of Cordyceps militaris extraction (CME) on menopausal obesity and its mechanisms. METHODS We applied an approach combining in vivo, in vitro, and in silico methods. Ovariectomized rats were administrated CME, and their body weight, area of adipocytes, liver and uterus weight, and lipid levels were measured. Next, after the exposure of MCF-7 human breast cancer cells to CME, cell proliferation and the phosphorylation of estrogen receptor and mitogen-activated protein kinases (MAPK) were measured. Finally, network pharmacological methods were applied to predict the anti-obesity mechanisms of CME. RESULTS CME prevented overweight, fat accumulation, liver hypertrophy, and lowered triglyceride levels, some of which were improved in a dose-dependent manner. In MCF-7 cell lines, CME showed not only estrogen receptor agonistic activity through an increase in cell proliferation and the phosphorylation of estrogen receptors, but also phosphorylation of extracellular-signal-regulated kinase and p38. In the network pharmacological analysis, bioactive compounds of CME such as cordycepin, adenine, and guanosine were predicted to interact with non-overlapping genes. The targeted genes were related to the insulin signaling pathway, insulin resistance, the MARK signaling pathway, the PI3K-Akt signaling pathway, and the estrogen signaling pathway. CONCLUSIONS These results suggest that CME has anti-obesity effects in menopause and estrogenic agonistic activity. Compounds in CME have the potential to regulate obesity-related and menopause-related pathways. This study will contribute to developing the understanding of anti-obesity effects and mechanisms of Cordyceps militaris.
Collapse
Affiliation(s)
- Dongyeop Jang
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam, 13120, Korea
| | - Eunjoo Lee
- Department of Life Science, College of Bio-Nano Technology, Gachon University, Seongnam, 13120, Korea
| | - Sullim Lee
- Department of Life Science, College of Bio-Nano Technology, Gachon University, Seongnam, 13120, Korea
| | - Yongsam Kwon
- Dong-A Pharmaceutical Co., LTD, Yongin, 17073, Korea
| | - Ki Sung Kang
- Department of Preventive Medicine, College of Korean Medicine, Gachon University, Seongnam, 13120, Korea
| | - Chang-Eop Kim
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam, 13120, Korea.
| | - Daeyoung Kim
- Department of Life Science, College of Bio-Nano Technology, Gachon University, Seongnam, 13120, Korea.
| |
Collapse
|
11
|
Phung HM, Jang D, Trinh TA, Lee D, Nguyen QN, Kim CE, Kang KS. Regulation of appetite-related neuropeptides by Panax ginseng: A novel approach for obesity treatment. J Ginseng Res 2022; 46:609-619. [PMID: 35818423 PMCID: PMC9270656 DOI: 10.1016/j.jgr.2022.03.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 03/24/2022] [Accepted: 03/29/2022] [Indexed: 12/04/2022] Open
Abstract
Obesity is a primary factor provoking various chronic disorders, including cardiovascular disease, diabetes, and cancer, and causes the death of 2.8 million individuals each year. Diet, physical activity, medications, and surgery are the main therapies for overweightness and obesity. During weight loss therapy, a decrease in energy stores activates appetite signaling pathways under the regulation of neuropeptides, including anorexigenic [corticotropin-releasing hormone, proopiomelanocortin (POMC), cholecystokinin (CCK), and cocaine- and amphetamine-regulated transcript] and orexigenic [agouti-related protein (AgRP), neuropeptide Y (NPY), and melanin-concentrating hormone] neuropeptides, which increase food intake and lead to failure in attaining weight loss goals. Ginseng and ginsenosides reverse these signaling pathways by suppressing orexigenic neuropeptides (NPY and AgRP) and provoking anorexigenic neuropeptides (CCK and POMC), which prevent the increase in food intake. Moreover, the results of network pharmacology analysis have revealed that constituents of ginseng radix, including campesterol, beta-elemene, ginsenoside Rb1, biotin, and pantothenic acid, are highly correlated with neuropeptide genes that regulate energy balance and food intake, including ADIPOQ, NAMPT, UBL5, NUCB2, LEP, CCK, GAST, IGF1, RLN1, PENK, PDYN, and POMC. Based on previous studies and network pharmacology analysis data, ginseng and its compounds may be a potent source for obesity treatment by regulating neuropeptides associated with appetite.
Collapse
|
12
|
Bae H, Lee S, Lee CY, Kim CE. A Novel Framework for Understanding the Pattern Identification of Traditional Asian Medicine From the Machine Learning Perspective. Front Med (Lausanne) 2022; 8:763533. [PMID: 35186965 PMCID: PMC8853725 DOI: 10.3389/fmed.2021.763533] [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: 08/24/2021] [Accepted: 12/23/2021] [Indexed: 11/13/2022] Open
Abstract
Pattern identification (PI), a unique diagnostic system of traditional Asian medicine, is the process of inferring the pathological nature or location of lesions based on observed symptoms. Despite its critical role in theory and practice, the information processing principles underlying PI systems are generally unclear. We present a novel framework for comprehending the PI system from a machine learning perspective. After a brief introduction to the dimensionality of the data, we propose that the PI system can be modeled as a dimensionality reduction process and discuss analytical issues that can be addressed using our framework. Our framework promotes a new approach in understanding the underlying mechanisms of the PI process with strong mathematical tools, thereby enriching the explanatory theories of traditional Asian medicine.
Collapse
Affiliation(s)
- Hyojin Bae
- Department of Physiology, Gachon University College of Korean Medicine, Seongnam, South Korea
| | - Sanghun Lee
- Korean Medicine Data Division, Korea Institute of Oriental Medicine, Daejeon, South Korea.,Department of Korean Convergence Medical Science, University of Science and Technology, Daejeon, South Korea
| | - Choong-Yeol Lee
- Department of Physiology, Gachon University College of Korean Medicine, Seongnam, South Korea
| | - Chang-Eop Kim
- Department of Physiology, Gachon University College of Korean Medicine, Seongnam, South Korea
| |
Collapse
|
13
|
Kim KR, Trinh TA, Baek JY, Lee D, Lim S, Kim J, Lee WY, Kim CE, Kang KS, Lee HL. Preventive Effect of Anemarrhenae rhizome and Phellodendri cortex on Danazol-Induced in Precocious Puberty in Female Rats and Network Pharmacological Analysis of Active Compounds. Plants (Basel) 2021; 11:plants11010023. [PMID: 35009026 PMCID: PMC8747665 DOI: 10.3390/plants11010023] [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] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 12/18/2021] [Accepted: 12/20/2021] [Indexed: 05/05/2023]
Abstract
Anemarrhenae rhizome and Phellodendri cortex have historically been used for the treatment of precocious puberty (PP) in oriental medicine. Our study aimed to evaluate the effect of APE, a mixture of the extracts from these herbs, against danazol-induced PP in female rats. The offspring were injected danazol to establish the PP model, and then treated with APE daily, and observed for vaginal opening. At the end of the study, the levels of gonadotropic hormones, such as estradiol, follicle-stimulating hormone, and luteinizing hormone, were determined by ELISA. Moreover, the mRNA expression of GnRH, netrin-1, and UNC5C in hypothalamic tissues was determined by real-time PCR. Network pharmacological analysis was performed to predict the active compounds of APE and their potential actions. APE treatment delayed vaginal opening in rats with PP. In addition, APE treatment reduced LH levels and suppressed UNC5C expression. Gene set enrichment analysis revealed that the targets of APE were significantly associated with GnRH signaling and ovarian steroidogenesis pathways. In conclusion, APE may be used as a therapeutic remedy to inhibit the activation of the hypothalamic-pituitary-gonadal axis.
Collapse
Affiliation(s)
- Kyeong Ri Kim
- Department of Pediatrics, College of Korean Medicine, Daejeon University, Daejeon 300716, Korea;
| | - Tuy An Trinh
- Saigon Pharmaceutical Science and Technology Center, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh 70000, Vietnam;
| | - Ji Yun Baek
- Department of Food Science, Gyeongnam National University of Science and Technology, Jinju 52725, Korea;
- College of Korean Medicine, Gachon University, Seongnam 13120, Korea; (D.L.); (W.-Y.L.); (C.-E.K.)
| | - Dahae Lee
- College of Korean Medicine, Gachon University, Seongnam 13120, Korea; (D.L.); (W.-Y.L.); (C.-E.K.)
| | - Sehun Lim
- Department of Anesthesiology and Pain Medicine, College of Medicine, Inje University, Busan 50834, Korea; (S.L.); (J.K.)
| | - Jonghyup Kim
- Department of Anesthesiology and Pain Medicine, College of Medicine, Inje University, Busan 50834, Korea; (S.L.); (J.K.)
| | - Won-Yung Lee
- College of Korean Medicine, Gachon University, Seongnam 13120, Korea; (D.L.); (W.-Y.L.); (C.-E.K.)
| | - Chang-Eop Kim
- College of Korean Medicine, Gachon University, Seongnam 13120, Korea; (D.L.); (W.-Y.L.); (C.-E.K.)
| | - Ki Sung Kang
- College of Korean Medicine, Gachon University, Seongnam 13120, Korea; (D.L.); (W.-Y.L.); (C.-E.K.)
- Correspondence: (K.S.K.); (H.L.L.); Tel.: +82-31-750-5402 (K.S.K.)
| | - Hye Lim Lee
- Department of Pediatrics, College of Korean Medicine, Daejeon University, Daejeon 300716, Korea;
- Correspondence: (K.S.K.); (H.L.L.); Tel.: +82-31-750-5402 (K.S.K.)
| |
Collapse
|
14
|
Jang D, Jeong H, Kim CE, Leem J. A System-Level Mechanism of Anmyungambi Decoction for Obesity: A Network Pharmacological Approach. Biomolecules 2021; 11:biom11121881. [PMID: 34944525 PMCID: PMC8699029 DOI: 10.3390/biom11121881] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 11/17/2021] [Revised: 12/13/2021] [Accepted: 12/13/2021] [Indexed: 12/18/2022] Open
Abstract
Obesity is a low-grade systemic inflammatory disease involving adipocytokines. As though Anmyungambi decoction (AMGB) showed significant improvement on obesity in a clinical trial, the molecular mechanism of AMGB in obesity remains unknown. Therefore, we explored the potential mechanisms of action of AMGB on obesity through network pharmacological approaches. We revealed that targets of AMGB are significantly associated with obesity-related and adipocyte-elevated genes. Evodiamine, berberine, genipin, palmitic acid, genistein, and quercetin were shown to regulate adipocytokine signaling pathway proteins which mainly involved tumor necrosis factor receptor 1, leptin receptor. In terms of the regulatory pathway of lipolysis in adipocytes, norephedrine, pseudoephedrine, quercetin, and limonin were shown to affect adrenergic receptor-beta, protein kinase A, etc. We also found that AMGB has the potentials to enhance the insulin signaling pathway thereby preventing type II diabetes mellitus. Additionally, AMGB was discovered to be able to control not only insulin-related proteins but also inflammatory mediators and apoptotic regulators and caspases, hence reducing hepatocyte injury in nonalcoholic fatty liver disease. Our findings help develop a better understanding of how AMGB controls obesity.
Collapse
Affiliation(s)
- Dongyeop Jang
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam-si 13121, Korea; (D.J.); (H.J.)
| | - Hayeong Jeong
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam-si 13121, Korea; (D.J.); (H.J.)
| | - Chang-Eop Kim
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam-si 13121, Korea; (D.J.); (H.J.)
- Correspondence: (C.-E.K.); (J.L.); Tel.: +82-31-750-5493 (C.-E.K.); +82-63-850-6984 (J.L.)
| | - Jungtae Leem
- Research Center of Traditional Korean Medicine, College of Korean Medicine, Wonkwang University, 460, Iksan-daero, Sin-dong, Iksan 54538, Korea
- Correspondence: (C.-E.K.); (J.L.); Tel.: +82-31-750-5493 (C.-E.K.); +82-63-850-6984 (J.L.)
| |
Collapse
|
15
|
Jang DY, Oh KC, Jung ES, Cho SJ, Lee JY, Lee YJ, Kim CE, Yang IJ. Diversity of Acupuncture Point Selections According to the Acupuncture Styles and Their Relations to Theoretical Elements in Traditional Asian Medicine: A Data-Mining-Based Literature Study. J Clin Med 2021; 10:jcm10102059. [PMID: 34064891 PMCID: PMC8151004 DOI: 10.3390/jcm10102059] [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: 03/25/2021] [Revised: 05/07/2021] [Accepted: 05/10/2021] [Indexed: 12/18/2022] Open
Abstract
Acupuncture point (AP) selections can vary depending on clinicians’ acupuncture style, and therefore, acupuncture style is an important factor in determining the efficacy of acupuncture treatment. However, few studies have examined the differences in AP selections according to the acupuncture styles and theoretical backgrounds causing the differences. We compared the AP prescriptions used for 14 diseases in three classical medical textbooks, Dongeuibogam (DEBG), Saamdoinchimgooyogyeol (SADI), and Chimgoogyeongheombang (CGGHB), which represent unique acupuncture styles and have affected clinicians during this time. AP prescriptions showed more diversity between textbooks than between types of diseases. Among the three textbooks, AP prescriptions of SADI were most different compared to those of DEBG and CGGHB. Importantly, we found each style can be more clearly explained by AP attributes than by the APs per se. Specifically, SADI, DEBG, and CGGHB preferred five transport points located on the limbs, APs of the extra meridians, and source points, respectively. This suggests the possibility that the theoretical diversity of acupuncture styles results in the heterogeneity of AP selections.
Collapse
Affiliation(s)
- Dong-Yeop Jang
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam 13120, Korea;
| | - Ki-Chang Oh
- College of Korean Medicine, Dongguk University, Gyeongju 38066, Korea; (K.-C.O.); (E.-S.J.); (S.-J.C.); (J.-Y.L.); (Y.-J.L.)
| | - Eun-Seo Jung
- College of Korean Medicine, Dongguk University, Gyeongju 38066, Korea; (K.-C.O.); (E.-S.J.); (S.-J.C.); (J.-Y.L.); (Y.-J.L.)
| | - Soo-Jin Cho
- College of Korean Medicine, Dongguk University, Gyeongju 38066, Korea; (K.-C.O.); (E.-S.J.); (S.-J.C.); (J.-Y.L.); (Y.-J.L.)
| | - Ji-Yun Lee
- College of Korean Medicine, Dongguk University, Gyeongju 38066, Korea; (K.-C.O.); (E.-S.J.); (S.-J.C.); (J.-Y.L.); (Y.-J.L.)
| | - Yeon-Jae Lee
- College of Korean Medicine, Dongguk University, Gyeongju 38066, Korea; (K.-C.O.); (E.-S.J.); (S.-J.C.); (J.-Y.L.); (Y.-J.L.)
| | - Chang-Eop Kim
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam 13120, Korea;
- Correspondence: (C.-E.K.); (I.-J.Y.); Tel.: +82-31-750-5416 (C.-E.K.); +82-54-770-2366 (I.-J.Y.)
| | - In-Jun Yang
- Department of Physiology, College of Korean Medicine, Dongguk University, Gyeongju 38066, Korea
- Correspondence: (C.-E.K.); (I.-J.Y.); Tel.: +82-31-750-5416 (C.-E.K.); +82-54-770-2366 (I.-J.Y.)
| |
Collapse
|
16
|
Lee WY, Lee CY, Kim CE, Kim JH. Investigating the Biomarkers of the Sasang Constitution via Network Pharmacology Approach. Evid Based Complement Alternat Med 2021; 2021:6665130. [PMID: 33936241 PMCID: PMC8060121 DOI: 10.1155/2021/6665130] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 03/22/2021] [Accepted: 04/03/2021] [Indexed: 12/03/2022]
Abstract
Sasang constitutional (SC) medicine classifies people into Soeum (SE), Soyang (SY), Taeeum (TE), and Taeyang (TY) types based on psychological and physical traits. However, biomarkers of these types are still unclear. We aimed to identify biomarkers among the SC types using network pharmacology methods. Target genes associated with the SC types were identified by grouping herb targets that preserve and strengthen the requisite energy (Bomyeongjiju). The herb targets were obtained by constructing an herb-compound-target network. We identified 371, 185, 146, and 89 target genes and their unique biological processes related to SE, SY, TE, and TY types, respectively. While the targets of SE and SY types were the most similar among the target pairs of the SC types, those of TY type overlapped with only a few other SC-type targets. Moreover, SE, SY, TE, and TY were related to "diseases of the digestive system," "diseases of the nervous system," "endocrine, nutritional, and metabolic diseases," and "congenital malformations, deformations, and chromosomal abnormalities," respectively. We successfully identified the target genes, biological processes, and diseases related to each SC type. We also demonstrated that a drug-centric approach using network pharmacology analysis provides a deeper understanding of the concept of Sasang constitutional medicine at a phenotypic level.
Collapse
Affiliation(s)
- Won-Yung Lee
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam, Republic of Korea
| | - Choong-Yeol Lee
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam, Republic of Korea
| | - Chang-Eop Kim
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam, Republic of Korea
| | - Ji-Hwan Kim
- Department of Sasang Constitutional Medicine, College of Korean Medicine, Gachon University, Seongnam, Republic of Korea
| |
Collapse
|
17
|
Lee JH, Park M, Jung K, Hong G, Lee HL, Kim DW, Kim CE, Kang KS. Identification of gallic acid as a active ingredient of Syzygium aromaticum against tacrolimus-induced damage in renal epithelial LLC-PK1 cells and rat kidney. Bioorg Med Chem Lett 2021; 41:128012. [PMID: 33838305 DOI: 10.1016/j.bmcl.2021.128012] [Citation(s) in RCA: 2] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 03/19/2021] [Accepted: 03/28/2021] [Indexed: 11/29/2022]
Abstract
Tacrolimus (FK506), a calcineurin inhibitor, is an effective immunosuppressive agent mainly used to lower the risk of organ rejection after allogeneic organ transplant. However, FK506-associated adverse effects, such as nephrotoxicity, may limit its therapeutic use. In this study, we confirmed that epigallocatechin-3-gallate (EGCG), sanguiin H-6, and gallic acid increased cell survival following FK506-induced cytotoxicity in renal epithelial LLC-PK1. Among these compounds, gallic acid exerted the strongest protective effect, further confirmed in the FK506-induced nephrotoxicity rat model. Additionally, we identified supporting evidence for the nephroprotective function of gallic acid using molecular docking and bioavailability investigations.
Collapse
Affiliation(s)
- Ji Hwan Lee
- College of Korean Medicine, Gachon University, Seongnam 13120, Republic of Korea
| | - Musun Park
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam 13120, Republic of Korea; Intellectual Information Team, Future Medicine Division, Korea Institute of Oriental Medicine, Daejeon 34054, Republic of Korea
| | - Kiwon Jung
- Institute of Pharmaceutical Sciences, College of Pharmacy, CHA University, Sungnam 13844, Republic of Korea
| | - Gyeongmin Hong
- Institute of Pharmaceutical Sciences, College of Pharmacy, CHA University, Sungnam 13844, Republic of Korea
| | - Hye Lim Lee
- Department of Pediatrics, College of Korean Medicine, Daejeon University, Daejeon, Republic of Korea
| | - Dong-Wook Kim
- Department of Pharmaceutical Engineering, Cheongju University, Cheongju 28530, Republic of Korea
| | - Chang-Eop Kim
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam 13120, Republic of Korea.
| | - Ki Sung Kang
- College of Korean Medicine, Gachon University, Seongnam 13120, Republic of Korea.
| |
Collapse
|
18
|
Bae H, Kim SJ, Kim CE. Lessons From Deep Neural Networks for Studying the Coding Principles of Biological Neural Networks. Front Syst Neurosci 2021; 14:615129. [PMID: 33519390 PMCID: PMC7843526 DOI: 10.3389/fnsys.2020.615129] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Accepted: 12/14/2020] [Indexed: 12/26/2022] Open
Abstract
One of the central goals in systems neuroscience is to understand how information is encoded in the brain, and the standard approach is to identify the relation between a stimulus and a neural response. However, the feature of a stimulus is typically defined by the researcher's hypothesis, which may cause biases in the research conclusion. To demonstrate potential biases, we simulate four likely scenarios using deep neural networks trained on the image classification dataset CIFAR-10 and demonstrate the possibility of selecting suboptimal/irrelevant features or overestimating the network feature representation/noise correlation. Additionally, we present studies investigating neural coding principles in biological neural networks to which our points can be applied. This study aims to not only highlight the importance of careful assumptions and interpretations regarding the neural response to stimulus features but also suggest that the comparative study between deep and biological neural networks from the perspective of machine learning can be an effective strategy for understanding the coding principles of the brain.
Collapse
Affiliation(s)
- Hyojin Bae
- Department of Physiology, Gachon University College of Korean Medicine, Seongnam, South Korea
| | - Sang Jeong Kim
- Laboratory of Neurophysiology, Department of Physiology, Seoul National University College of Medicine, Seoul, South Korea
| | - Chang-Eop Kim
- Department of Physiology, Gachon University College of Korean Medicine, Seongnam, South Korea
| |
Collapse
|
19
|
Kim YR, Kim CE, Yoon H, Kim SK, Kim SJ. Multiplexed Processing of Vibrotactile Information in the Mouse Primary Somatosensory Cortex. Exp Neurobiol 2020; 29:425-432. [PMID: 33372168 PMCID: PMC7788311 DOI: 10.5607/en20041] [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: 08/31/2020] [Revised: 10/24/2020] [Accepted: 10/26/2020] [Indexed: 11/25/2022] Open
Abstract
The primary somatosensory (S1) cortex plays a key role in distinguishing different sensory stimuli. Vibrotactile touch information is conveyed from the periphery to the S1 cortex through three major classes of mechanoreceptors: slowly adapting type 1 (SA1), rapidly adapting (RA), and Pacinian (PC) afferents. It has been a long-standing question whether specific populations in the S1 cortex preserve the peripheral segregation by the afferent submodalities. Here, we investigated whether S1 neurons exhibit specific responses to two distinct vibrotactile stimuli, which excite different types of mechanoreceptors (e.g., SA1 and PC afferents). Using in vivo two-photon microscopy and genetically encoded calcium indicator, GCaMP6s, we recorded calcium activities of S1 L2/3 neurons. At the same time, static (<1 Hz) and dynamic (150 Hz) vibrotactile stimuli, which are known to excite SA1 and PC, respectively, were pseudorandomly applied to the right hind paw in lightly anesthetized mice. We found that most active S1 neurons responded to both static and dynamic stimuli, but more than half of them showed preferred responses to either type of stimulus. Only a small fraction of the active neurons exhibited specific responses to either static or dynamic stimuli. However, the S1 population activity patterns by the two stimuli were markedly distinguished. These results indicate that the vibrotactile inputs driven by excitation of distinct submodalities are converged on the single cells of the S1 cortex, but are well discriminated by population activity patterns composed of neurons that have a weighted preference for each type of stimulus.
Collapse
Affiliation(s)
- Yoo Rim Kim
- Department of Physiology, Seoul National University College of Medicine, Seoul 08826, Korea.,Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul 08826, Korea.,Neuroscience Research Institute, Seoul National University College of Medicine, Seoul 08826, Korea
| | - Chang-Eop Kim
- Department of Physiology, Seoul National University College of Medicine, Seoul 08826, Korea.,Department of Physiology, College of Korean Medicine, Gachon University, Seongnam 13120, Korea
| | - Heera Yoon
- Department of Science in Korean Medicine, Graduate School, Kyung Hee University, Seoul 02447, Korea
| | - Sun Kwang Kim
- Department of Science in Korean Medicine, Graduate School, Kyung Hee University, Seoul 02447, Korea.,Department of Physiology, College of Korean Medicine, Kyung Hee University, Seoul 02447, Korea
| | - Sang Jeong Kim
- Department of Physiology, Seoul National University College of Medicine, Seoul 08826, Korea.,Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul 08826, Korea.,Neuroscience Research Institute, Seoul National University College of Medicine, Seoul 08826, Korea
| |
Collapse
|
20
|
Park SC, Trinh TA, Lee WY, Baek JY, Lee S, Choi K, Ha J, Kim CE, Kang KS, Lee HL. Effects of estrogen inhibition formula herbal mixture for danazol-induced precocious puberty in female rats: an experimental study with network pharmacology. Integr Med Res 2020; 10:100708. [PMID: 33665096 PMCID: PMC7903350 DOI: 10.1016/j.imr.2020.100708] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [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: 06/17/2020] [Revised: 11/28/2020] [Accepted: 11/30/2020] [Indexed: 11/25/2022] Open
Abstract
Background This study aimed at determining the effect of the herbal mixture estrogen inhibition formula (EIF) and its possible mechanisms by precocious puberty animal models and network pharmacology-based analysis. Methods Precocious puberty animal models were established by a single injection of 300 μg danazol, then female rats were administered EIF, vaginal openings were monitored, uterus and pituitary indices were determined. The levels of ALP, E2, LH, and FSH were measured using ELISA kits. Real-time PCR was performed to evaluate the mRNA expression of GnRH, UNC5C, and netrin-1 in hypothalamic tissues. We applied network pharmacological analysis to predict potential targets and pathways of EIF. Results EIF delayed danazol-induced early vaginal opening. In the onset model, EIF reduced the increased levels of serum ALP, E2, LH, and FSH; as well as mRNA expressions of GnRH, Netrin-1, and UNC5C. Moreover, long-term administration of EIF not only diminished all impaired factors but also had no effect on the normal development of the animals. The gene set enrichment analysis showed that the targets of EIF are mainly associated with the GnRH signaling and ovarian steroidogenesis pathways. Conclusion EIF could be used in preclinical research for the treatment of precocious puberty by the inhibition of HPGA pre-maturation.
Collapse
Affiliation(s)
| | - Tuy An Trinh
- College of Korean Medicine, Gachon University, Seongnam, Republic of Korea
| | - Won-Yung Lee
- College of Korean Medicine, Gachon University, Seongnam, Republic of Korea
| | - Ji Yun Baek
- College of Korean Medicine, Gachon University, Seongnam, Republic of Korea
| | - Seungyong Lee
- Highki Korean Medicine Clinic, Seoul, Republic of Korea
| | - Kyuhee Choi
- Highki Korean Medicine Clinic, Seoul, Republic of Korea
| | - Jaewon Ha
- Highki Korean Medicine Clinic, Seoul, Republic of Korea
| | - Chang-Eop Kim
- College of Korean Medicine, Gachon University, Seongnam, Republic of Korea
| | - Ki Sung Kang
- College of Korean Medicine, Gachon University, Seongnam, Republic of Korea
| | - Hye Lim Lee
- Department of Pediatrics, College of Korean Medicine, Daejeon University, Daejeon, Republic of Korea
| |
Collapse
|
21
|
Park SY, Park M, Lee WY, Lee CY, Kim JH, Lee S, Kim CE. Machine learning-based prediction of Sasang constitution types using comprehensive clinical information and identification of key features for diagnosis. Integr Med Res 2020; 10:100668. [PMID: 33665087 PMCID: PMC7903349 DOI: 10.1016/j.imr.2020.100668] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 09/17/2020] [Accepted: 09/20/2020] [Indexed: 02/07/2023] Open
Abstract
Background Despite the importance of accurate Sasang type diagnosis, a unique form of Korean medicine, there have been concerns about consistency among diagnoses. We investigate a data-driven integrative diagnostic model by applying machine learning to a multicenter clinical dataset with comprehensive features. Methods Extremely randomized trees (ERT), support vector machines, multinomial logistic regression, and K-nearest neighbor were applied, and performances were evaluated by cross-validation. The feature importance of the classifier was analyzed to understand which information is crucial in diagnosis. Results The ERT classifier showed the highest performance, with an overall f1 score of 0.60 ± 0.060. The feature classes of body measurement, personality, general information, and cold–heat were more decisive than others in classifying Sasang types. Costal angle was the most informative feature. In pairwise classification, we found Sasang type-dependent distinctions that body measurement features played a key role in TE-SE and TE-SY datasets, while personality and cold–heat features showed importance in SE-SY dataset. Conclusion Current study investigated a comprehensive diagnostic model for Sasang type using machine learning and achieved better performance than previous studies. This study helps data-driven decision making in clinics by revealing key features contributing to the Sasang type diagnosis.
Collapse
Affiliation(s)
- Sa-Yoon Park
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam, Republic of Korea
| | - Musun Park
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam, Republic of Korea
| | - Won-Yung Lee
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam, Republic of Korea
| | - Choong-Yeol Lee
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam, Republic of Korea
| | - Ji-Hwan Kim
- Department of Sasang Constitutional Medicine, Gil Hospital of Korean Medicine, Gachon University, Incheon, Republic of Korea
| | - Siwoo Lee
- Mibyeong Research Center, Korea Institute of Oriental Medicine, Daejeon, Republic of Korea
- Corresponding authors.
| | - Chang-Eop Kim
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam, Republic of Korea
- Corresponding authors.
| |
Collapse
|
22
|
Roh SE, Kim SH, Ryu C, Kim CE, Kim YG, Worley PF, Kim SK, Kim SJ. Direct translation of climbing fiber burst-mediated sensory coding into post-synaptic Purkinje cell dendritic calcium. eLife 2020; 9:61593. [PMID: 32985976 PMCID: PMC7581426 DOI: 10.7554/elife.61593] [Citation(s) in RCA: 7] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 09/17/2020] [Indexed: 11/13/2022] Open
Abstract
Climbing fibers (CFs) generate complex spikes (CS) and Ca2+ transients in cerebellar Purkinje cells (PCs), serving as instructive signals. The so-called 'all-or-none' character of CSs has been questioned since the CF burst was described. Although recent studies have indicated a sensory-driven enhancement of PC Ca2+ signals, how CF responds to sensory events and contributes to PC dendritic Ca2+ and CS remains unexplored. Here, single or simultaneous Ca2+ imaging of CFs and PCs in awake mice revealed the presynaptic CF Ca2+ amplitude encoded the sensory input's strength and directly influenced post-synaptic PC dendritic Ca2+ amplitude. The sensory-driven variability in CF Ca2+ amplitude depended on the number of spikes in the CF burst. Finally, the spike number of the CF burst determined the PC Ca2+ influx and CS properties. These results reveal the direct translation of sensory information-coding CF inputs into PC Ca2+, suggesting the sophisticated role of CFs as error signals.
Collapse
Affiliation(s)
- Seung-Eon Roh
- Department of Physiology, Seoul National University College of Medicine, Seoul, Republic of Korea.,Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Republic of Korea.,Neuroscience Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea.,Department of Physiology, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea.,Department of Neuroscience, School of Medicine, Johns Hopkins University, Baltimore, United States
| | - Seung Ha Kim
- Department of Physiology, Seoul National University College of Medicine, Seoul, Republic of Korea.,Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Changhyeon Ryu
- Department of Physiology, Seoul National University College of Medicine, Seoul, Republic of Korea.,Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Republic of Korea.,Neuroscience Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Chang-Eop Kim
- Department of Physiology, Seoul National University College of Medicine, Seoul, Republic of Korea.,Department of Physiology, College of Korean Medicine, Gacheon University, Seongnam, Republic of Korea
| | - Yong Gyu Kim
- Department of Physiology, Seoul National University College of Medicine, Seoul, Republic of Korea.,Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Republic of Korea.,Neuroscience Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Paul F Worley
- Department of Neuroscience, School of Medicine, Johns Hopkins University, Baltimore, United States
| | - Sun Kwang Kim
- Department of Physiology, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Sang Jeong Kim
- Department of Physiology, Seoul National University College of Medicine, Seoul, Republic of Korea.,Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Republic of Korea.,Neuroscience Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea
| |
Collapse
|
23
|
Lee SR, Lee D, Park M, Lee JC, Park HJ, Kang KS, Kim CE, Beemelmanns C, Kim KH. Absolute Configuration and Corrected NMR Assignment of 17-Hydroxycyclooctatin, a Fused 5-8-5 Tricyclic Diterpene. J Nat Prod 2020; 83:354-361. [PMID: 31990198 DOI: 10.1021/acs.jnatprod.9b00837] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The absolute configuration and corrected NMR assignment of 17-hydroxycyclooctatin isolated from Streptomyces sp. M56 recovered from a nest of South African Macrotermes natalensis termites are reported. 17-Hydroxycyclooctatin is a unique tricyclic diterpene (C20) consisting of a fused 5-8-5 ring system, and in this study, its structure was unambiguously determined by a combination of HR-ESIMS and 1D and 2D NMR spectroscopic experiments to produce corrected NMR assignments. The absolute configuration of 17-hydroxycyclooctatin is reported for the first time in the current study using chemical reactions and quantum chemical ECD calculations. The corrected NMR assignments were verified using a gauge-including atomic orbital NMR chemical shifts calculation, followed by DP4 probability. To understand the pharmacological properties of 17-hydroxycyclooctatin, a network pharmacological approach and molecular docking analyses were used, which also predicted its effects on human breast cancer cell lines. Cytotoxicity and antiestrogenic activity of 17-hydroxycyclooctatin were determined, and it was found this compound may be an ERα antagonist.
Collapse
Affiliation(s)
- Seoung Rak Lee
- School of Pharmacy , Sungkyunkwan University , Suwon 16419 , Republic of Korea
| | - Dahae Lee
- School of Pharmacy , Sungkyunkwan University , Suwon 16419 , Republic of Korea
| | - Musun Park
- College of Korean Medicine , Gachon University , Seongnam 13120 , Republic of Korea
| | - Joo Chan Lee
- School of Pharmacy , Sungkyunkwan University , Suwon 16419 , Republic of Korea
| | - Hyun-Ju Park
- School of Pharmacy , Sungkyunkwan University , Suwon 16419 , Republic of Korea
| | - Ki Sung Kang
- College of Korean Medicine , Gachon University , Seongnam 13120 , Republic of Korea
| | - Chang-Eop Kim
- College of Korean Medicine , Gachon University , Seongnam 13120 , Republic of Korea
| | - Christine Beemelmanns
- Leibniz Institute for Natural Product Research and Infection Biology-Hans-Knöll-Institute , Beutenbergstraße 11a , 07745 Jena , Germany
| | - Ki Hyun Kim
- School of Pharmacy , Sungkyunkwan University , Suwon 16419 , Republic of Korea
| |
Collapse
|
24
|
Oh J, Bae H, Kim CE. Construction And Analysis Of The Time-Evolving Pain-Related Brain Network Using Literature Mining. J Pain Res 2019; 12:2891-2903. [PMID: 31802931 PMCID: PMC6801488 DOI: 10.2147/jpr.s217036] [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: 05/24/2019] [Accepted: 09/17/2019] [Indexed: 11/23/2022] Open
Abstract
Purpose We aimed to quantitatively investigate how the neuroscience field developed over time in terms of its concept on how pain is represented in the brain and compare the research trends of pain with those of mental disorders through literature mining of accumulated published articles. Methods The abstracts and publication years of 137,525 pain-related articles were retrieved from the PubMed database. We defined 22 pain-related brain regions that appeared more than 100 times in the retrieved abstracts. Time-evolving networks of pain-related brain regions were constructed using the co-occurrence frequency. The state-space model was implemented to capture the trend patterns of the pain-related brain regions and the patterns were compared with those of mental disorders. Results The number of pain-related abstracts including brain areas steadily increased; however, the relative frequency of each brain region showed different patterns. According to the chronological patterns of relative frequencies, pain-related brain regions were clustered into three groups: rising, falling, and consistent. The network of pain-related brain regions extended over time from localized regions (mainly including brain stem and diencephalon) to wider cortical/subcortical regions. In the state-space model, the relative frequency trajectory of pain-related brain regions gradually became closer to that of mental disorder-related brain regions. Conclusion Temporal changes of pain-related brain regions in the abstracts indicate that emotional/cognitive aspects of pain have been gradually emphasized. The networks of pain-related brain regions imply perspective changes on pain from the simple percept to the multidimensional experience. Based on the notable occurrence patterns of the cerebellum and motor cortex, we suggest that motor-related areas will be actively explored in pain studies.
Collapse
Affiliation(s)
- Jihong Oh
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam 13120, Republic of Korea
| | - Hyojin Bae
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam 13120, Republic of Korea
| | - Chang-Eop Kim
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam 13120, Republic of Korea
| |
Collapse
|
25
|
Bae H, Kim CE. Lessons from artificial neural networks for studying coding principles of biological neural networks. IBRO Rep 2019. [DOI: 10.1016/j.ibror.2019.07.499] [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: 11/16/2022] Open
|
26
|
Park SY, Kim YR, Kim SK, Kim SJ, Kim CE. Characterizing selectivity of S1 neurons in mlutidimensional sensory feature space. IBRO Rep 2019. [DOI: 10.1016/j.ibror.2019.07.880] [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: 10/26/2022] Open
|
27
|
Lee D, Lee WY, Jung K, Kwon YS, Kim D, Hwang GS, Kim CE, Lee S, Kang KS. The Inhibitory Effect of Cordycepin on the Proliferation of MCF-7 Breast Cancer Cells, and its Mechanism: An Investigation Using Network Pharmacology-Based Analysis. Biomolecules 2019; 9:E414. [PMID: 31454995 PMCID: PMC6770402 DOI: 10.3390/biom9090414] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 08/19/2019] [Accepted: 08/21/2019] [Indexed: 12/16/2022] Open
Abstract
Cordyceps militaris is a well-known medicinal mushroom. It is non-toxic and has clinical health benefits including cancer inhibition. However, the anticancer effects of C. militaris cultured in brown rice on breast cancer have not yet been reported. In this study, we simultaneously investigated the anticancer effects of cordycepin and an extract of C. militaris cultured in brown rice on MCF-7 human breast cancer cells using a cell viability assay, cell staining with Hoechst 33342, and an image-based cytometric assay. The C. militaris concentrate exhibited significant MCF-7 cell inhibitory effects, and its IC50 value was 73.48 µg/mL. Cordycepin also exhibited significant MCF-7 cell inhibitory effects, and its IC50 value was 9.58 µM. We applied network pharmacological analysis to predict potential targets and pathways of cordycepin. The gene set enrichment analysis showed that the targets of cordycepin are mainly associated with the hedgehog signaling, apoptosis, p53 signaling, and estrogen signaling pathways. We further verified the predicted targets related to the apoptosis pathway using western blot analysis. The C. militaris concentrate and cordycepin exhibited the ability to induce apoptotic cell death by increasing the cleavage of caspase-7 -8, and -9, increasing the Bcl-2-associated X protein/ B-cell lymphoma 2 (Bax/Bcl-2) protein expression ratio, and decreasing the protein expression of X-linked inhibitor of apoptosis protein (XIAP) in MCF-7 cells. Consequently, the C. militaris concentrate and cordycepin exhibited significant anticancer effects through their ability to induce apoptosis in breast cancer cells.
Collapse
Affiliation(s)
- Dahae Lee
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea
| | - Won-Yung Lee
- College of Korean Medicine, Gachon University, Seongnam 13120, Korea
| | - Kiwon Jung
- Institute of Pharmaceutical Sciences, College of Pharmacy, CHA University, Sungnam 13844, Korea
| | - Yong Sam Kwon
- Dong-A Pharmaceutical Co., LTD., Yongin 17073, Korea
| | - Daeyoung Kim
- Department of Life Science, College of Bio-Nano Technology, Gachon University, Seongnam, 13120, Korea
| | - Gwi Seo Hwang
- College of Korean Medicine, Gachon University, Seongnam 13120, Korea
| | - Chang-Eop Kim
- College of Korean Medicine, Gachon University, Seongnam 13120, Korea
| | - Sullim Lee
- Department of Life Science, College of Bio-Nano Technology, Gachon University, Seongnam, 13120, Korea.
| | - Ki Sung Kang
- College of Korean Medicine, Gachon University, Seongnam 13120, Korea.
| |
Collapse
|
28
|
Lee WY, Lee CY, Kim YS, Kim CE. The Methodological Trends of Traditional Herbal Medicine Employing Network Pharmacology. Biomolecules 2019; 9:biom9080362. [PMID: 31412658 PMCID: PMC6723118 DOI: 10.3390/biom9080362] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 08/06/2019] [Accepted: 08/06/2019] [Indexed: 12/18/2022] Open
Abstract
Natural products, including traditional herbal medicine (THM), are known to exert their therapeutic effects by acting on multiple targets, so researchers have employed network pharmacology methods to decipher the potential mechanisms of THM. To conduct THM-network pharmacology (THM-NP) studies, researchers have employed different tools and databases for constructing and analyzing herb–compound–target networks. In this study, we attempted to capture the methodological trends in THM-NP research. We identified the tools and databases employed to conduct THM-NP studies and visualized their combinatorial patterns. We also constructed co-author and affiliation networks to further understand how the methodologies are employed among researchers. The results showed that the number of THM-NP studies and employed databases/tools have been dramatically increased in the last decade, and there are characteristic patterns in combining methods of each analysis step in THM-NP studies. Overall, the Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform (TCMSP) was the most frequently employed network pharmacology database in THM-NP studies. Among the processes involved in THM-NP research, the methodology for constructing a compound–target network has shown the greatest change over time. In summary, our analysis describes comprehensive methodological trends and current ideas in research design for network pharmacology researchers.
Collapse
Affiliation(s)
- Won-Yung Lee
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam 13120, Korea
| | - Choong-Yeol Lee
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam 13120, Korea
| | - Youn-Sub Kim
- Department of Anatomy-Pointology, College of Korean Medicine, Gachon University, Seongnam 13120, Korea.
| | - Chang-Eop Kim
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam 13120, Korea.
| |
Collapse
|
29
|
Kim YR, Kim CE, Yoon H, Kim SK, Kim SJ. S1 Employs Feature-Dependent Differential Selectivity of Single Cells and Distributed Patterns of Populations to Encode Mechanosensations. Front Cell Neurosci 2019; 13:132. [PMID: 31024261 PMCID: PMC6460949 DOI: 10.3389/fncel.2019.00132] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [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: 12/14/2018] [Accepted: 03/18/2019] [Indexed: 11/23/2022] Open
Abstract
The primary somatosensory (S1) cortex plays an important role in the perception and discrimination of touch and pain mechanosensations. Conventionally, neurons in the somatosensory system including S1 cortex have been classified into low/high threshold (HT; non-nociceptive/nociceptive) or wide dynamic range (WDR; convergent) neurons by their electrophysiological responses to innocuous brush-stroke and noxious forceps-pinch stimuli. Besides this “noxiousness” (innocuous/noxious) feature, each stimulus also includes other stimulus features: “texture” (brush hairs/forceps-steel arm), “dynamics” (dynamic stroke/static press) and “intensity” (weak/strong). However, it remains unknown how S1 neurons inclusively process such diverse features of brushing and pinch at the single-cell and population levels. Using in vivo two-photon Ca2+ imaging in the layer 2/3 neurons of the mouse S1 cortex, we identified clearly separated response patterns of the S1 neural population with distinct tuning properties of individual cells to texture, dynamics and noxiousness features of cutaneous mechanical stimuli. Among cells other than broadly tuned neurons, the majority of the cells showed a highly selective response to the difference in texture, but low selectivity to the difference in dynamics or noxiousness. Between the two low selectivity features, the difference in dynamics was slightly more specific, yet both could be decoded using the response patterns of neural populations. In addition, more neurons are recruited and stronger Ca2+ responses are evoked as the intensity of forceps-pinch is gradually increased. Our results suggest that S1 neurons encode various features of mechanosensations with feature-dependent differential selectivity of single cells and distributed response patterns of populations. Moreover, we raise a caution about describing neurons by a single stimulus feature ignoring other aspects of the sensory stimuli.
Collapse
Affiliation(s)
- Yoo Rim Kim
- Department of Physiology, Seoul National University College of Medicine, Seoul, South Korea.,Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, South Korea
| | - Chang-Eop Kim
- Department of Physiology, Seoul National University College of Medicine, Seoul, South Korea.,Department of Physiology, College of Korean Medicine, Gachon University, Gyeonggi-do, South Korea
| | - Heera Yoon
- Department of Science in Korean Medicine, Graduate School, Kyung Hee University, Seoul, South Korea
| | - Sun Kwang Kim
- Department of Science in Korean Medicine, Graduate School, Kyung Hee University, Seoul, South Korea.,Department of Physiology, College of Korean Medicine, Kyung Hee University, Seoul, South Korea
| | - Sang Jeong Kim
- Department of Physiology, Seoul National University College of Medicine, Seoul, South Korea.,Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, South Korea.,Neuroscience Research Institute, Seoul National University College of Medicine, Seoul, South Korea
| |
Collapse
|
30
|
Lee D, Kim KH, Lee WY, Kim CE, Sung SH, Kang KB, Kang KS. Multiple Targets of 3-Dehydroxyceanothetric Acid 2-Methyl Ester to Protect Against Cisplatin-Induced Cytotoxicity in Kidney Epithelial LLC-PK1 Cells. Molecules 2019; 24:molecules24050878. [PMID: 30832267 PMCID: PMC6429383 DOI: 10.3390/molecules24050878] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [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: 02/08/2019] [Revised: 02/21/2019] [Accepted: 02/25/2019] [Indexed: 02/06/2023] Open
Abstract
Chronic exposure to cisplatin, a potent anticancer drug, causes irreversible kidney damage. In this study, we investigated the protective effect and mechanism of nine lupane- and ceanothane-type triterpenoids isolated from jujube (Ziziphus jujuba Mill., Rhamnaceae) on cisplatin-induced damage to kidney epithelial LLC-PK1 cells via mitogen-activated protein kinase (MAPK) and apoptosis pathways. Cisplatin-induced LLC-PK1 cell death was most significantly reduced following treatment with 3-dehydroxyceanothetric acid 2-methyl ester (3DC2ME). Additionally, apoptotic cell death was significantly reduced. Expression of c-Jun N-terminal kinase (JNK), extracellular signal-regulated kinase (ERK), and p38 was markedly suppressed by 3DC2ME, indicating inhibition of the MAPK pathway. Treatment with 3DC2ME also significantly reduced expression of active caspase-8 and -3, Bcl-2-associated X protein (Bax), and B cell lymphoma 2 (Bcl-2), indicating the inhibition of apoptosis pathways in the kidneys. We also applied the network pharmacological analysis and identified multiple targets of 3DC2ME related to MAPK signaling pathway and apoptosis.
Collapse
Affiliation(s)
- Dahae Lee
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea.
| | - Ki Hyun Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea.
| | - Won Yung Lee
- College of Korean Medicine, Gachon University, Seongnam 13120, Korea.
| | - Chang-Eop Kim
- College of Korean Medicine, Gachon University, Seongnam 13120, Korea.
| | - Sang Hyun Sung
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul 08826, Korea.
| | - Kyo Bin Kang
- College of Pharmacy, Sookmyung Women's University, Seoul 04310, Korea.
| | - Ki Sung Kang
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul 08826, Korea.
| |
Collapse
|
31
|
Park M, Park SY, Lee HJ, Kim CE. A Systems-Level Analysis of Mechanisms of Platycodon grandiflorum Based on A Network Pharmacological Approach. Molecules 2018; 23:E2841. [PMID: 30388815 PMCID: PMC6278259 DOI: 10.3390/molecules23112841] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [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: 09/27/2018] [Revised: 10/23/2018] [Accepted: 10/29/2018] [Indexed: 12/13/2022] Open
Abstract
Platycodon grandiflorum (PG) is widely used in Asia for its various beneficial effects. Although many studies were conducted to understand the molecular mechanisms of PG, it is still unclear how the combinations of multiple ingredients work together to exert its therapeutic effects. The aim of the present study was to provide a comprehensive review of the systems-level mechanisms of PG by adopting network pharmacological analysis. We constructed a compound⁻target⁻disease network for PG using experimentally validated and machine-leaning-based prediction results. Each target of the network was analyzed based on previously known pharmacological activities of PG. Gene ontology analysis revealed that the majority of targets were related to cellular and metabolic processes, responses to stimuli, and biological regulation. In pathway enrichment analyses of targets, the terms related to cancer showed the most significant enrichment and formed distinct clusters. Degree matrix analysis for target⁻disease associations of PG suggested the therapeutic potential of PG in various cancers including hepatocellular carcinoma, gastric cancer, prostate cancer, small-cell lung cancer, and renal cell carcinoma. We expect that network pharmacological approaches will provide an understanding of the systems-level mechanisms of medicinal herbs and further develop their therapeutic potentials.
Collapse
Affiliation(s)
- Musun Park
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam 13120, Korea.
| | - Sa-Yoon Park
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam 13120, Korea.
| | - Hae-Jeung Lee
- Department of Food and Nutrition, College of BioNano Technology, Gachon University, Seongnam 13120, Korea.
| | - Chang-Eop Kim
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam 13120, Korea.
| |
Collapse
|
32
|
Kim YR, Shim HG, Kim CE, Kim SJ. The effect of µ-opioid receptor activation on GABAergic neurons in the spinal dorsal horn. Korean J Physiol Pharmacol 2018; 22:419-425. [PMID: 29962856 PMCID: PMC6019873 DOI: 10.4196/kjpp.2018.22.4.419] [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] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Revised: 03/20/2018] [Accepted: 04/09/2018] [Indexed: 11/15/2022]
Abstract
The superficial dorsal horn of the spinal cord plays an important role in pain transmission and opioid activity. Several studies have demonstrated that opioids modulate pain transmission, and the activation of µ-opioid receptors (MORs) by opioids contributes to analgesic effects in the spinal cord. However, the effect of the activation of MORs on GABAergic interneurons and the contribution to the analgesic effect are much less clear. In this study, using transgenic mice, which allow the identification of GABAergic interneurons, we investigated how the activation of MORs affects the excitability of GABAergic interneurons and synaptic transmission between primary nociceptive afferent and GABAergic interneurons. We found that a selective µ-opioid agonist, [D-Ala2, NMe-Phe4, Gly-ol]-enkephanlin (DAMGO), induced an outward current mediated by K+ channels in GABAergic interneurons. In addition, DAMGO reduced the amplitude of evoked excitatory postsynaptic currents (EPSCs) of GABAergic interneurons which receive monosynaptic inputs from primary nociceptive C fibers. Taken together, we found that DAMGO reduced the excitability of GABAergic interneurons and synaptic transmission between primary nociceptive C fibers and GABAergic interneurons. These results suggest one possibility that suppression of GABAergic interneurons by DMAGO may reduce the inhibition on secondary GABAergic interneurons, which increase the inhibition of the secondary GABAergic interneurons to excitatory neurons in the spinal dorsal horn. In this circumstance, the sum of excitation of the entire spinal network will control the pain transmission.
Collapse
Affiliation(s)
- Yoo Rim Kim
- Department of Physiology, Seoul National University College of Medicine, Seoul 03080, Korea.,Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Hyun Geun Shim
- Department of Physiology, Seoul National University College of Medicine, Seoul 03080, Korea.,Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Chang-Eop Kim
- Department of Physiology, Seoul National University College of Medicine, Seoul 03080, Korea.,Department of Physiology, College of Korean Medicine, Gachon University, Seongnam 13120, Korea
| | - Sang Jeong Kim
- Department of Physiology, Seoul National University College of Medicine, Seoul 03080, Korea.,Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul 03080, Korea.,Neuroscience Research Institute, Seoul National University College of Medicine, Seoul 03080, Korea
| |
Collapse
|
33
|
Lee D, Kim CE, Park SY, Kim KO, Hiep NT, Lee D, Jang HJ, Lee JW, Kang KS. Protective Effect of Artemisia argyi and Its Flavonoid Constituents against Contrast-Induced Cytotoxicity by Iodixanol in LLC-PK1 Cells. Int J Mol Sci 2018; 19:ijms19051387. [PMID: 29735908 PMCID: PMC5983776 DOI: 10.3390/ijms19051387] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [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: 04/13/2018] [Revised: 05/04/2018] [Accepted: 05/04/2018] [Indexed: 12/20/2022] Open
Abstract
Preventive effects and corresponding molecular mechanisms of mugwort (Artemisia argyi) extract and its flavonoid constituents on contrast-induced nephrotoxicity were explored in the present study. We treated cultured LLC-PK1 cells with iodixanol to induce contrast-induced nephrotoxicity, and found that A. argyi extracts ameliorated the reduction in cellular viability following iodixanol treatment. The anti-apoptotic effect of A. argyi extracts on contrast-induced nephrotoxicity was mediated by the inhibition of mitogen-activated protein kinase (MAPK) phosphorylation and the activation of caspases. The flavonoid compounds isolated from A. argyi improved the viability of iodixanol-treated cells against contrast-induced nephrotoxicity. Seven compounds (1, 2, 3, 15, 16, 18, and 19) from 19 flavonoids exerted a significant protective effect. Based on the in silico oral-bioavailability and drug-likeness assessment, which evaluate the drug potential of these compounds, compound 2 (artemetin) showed the highest oral bioavailability (49.55%) and drug-likeness (0.48) values. We further investigated the compound–target–disease network of compound 2, and proliferator-activated receptor gamma (PPAR-γ) emerged as a predicted key marker for the treatment of contrast-induced nephrotoxicity. Consequently, compound 2 was the preferred candidate, and its protective effect was mediated by inhibiting the contrast-induced inflammatory response through activation of PPAR-γ and inhibition of MAPK phosphorylation and activation of caspases.
Collapse
Affiliation(s)
- Dahae Lee
- School of Pharmacy, Sungkyunkwan University, Suwon 440-746, Korea.
| | - Chang-Eop Kim
- College of Korean Medicine, Gachon University, Seongnam 13120, Korea.
| | - Sa-Yoon Park
- College of Korean Medicine, Gachon University, Seongnam 13120, Korea.
| | - Kem Ok Kim
- Department of Biosystems and Biotechnology, College of Life Science and Biotechnology, Korea University, Seoul 02841, Korea.
| | - Nguyen Tuan Hiep
- Department of Biosystems and Biotechnology, College of Life Science and Biotechnology, Korea University, Seoul 02841, Korea.
| | - Dongho Lee
- Department of Biosystems and Biotechnology, College of Life Science and Biotechnology, Korea University, Seoul 02841, Korea.
| | - Hyuk-Jai Jang
- Department of Surgery, University of Ulsan College of Medicine, Seoul 05505, Korea.
| | - Jae Wook Lee
- Natural Constituent Research Center, Korea Institute of Science and Technology, Gangnung 210-340, Korea.
| | - Ki Sung Kang
- College of Korean Medicine, Gachon University, Seongnam 13120, Korea.
| |
Collapse
|
34
|
Lee JH, Baek SY, Jang EJ, Ku SK, Kim KM, Ki SH, Kim CE, Park KI, Kim SC, Kim YW. Oxyresveratrol ameliorates nonalcoholic fatty liver disease by regulating hepatic lipogenesis and fatty acid oxidation through liver kinase B1 and AMP-activated protein kinase. Chem Biol Interact 2018; 289:68-74. [PMID: 29702089 DOI: 10.1016/j.cbi.2018.04.023] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [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: 10/24/2017] [Revised: 04/03/2018] [Accepted: 04/23/2018] [Indexed: 12/19/2022]
Abstract
Oxyresveratrol (OXY) is a naturally occurring polyhydroxylated stilbene that is abundant in mulberry wood (Morus alba L.), which has frequently been supplied as a herbal medicine. It has been shown that OXY has regulatory effects on inflammation and oxidative stress, and may have potential in preventing or curing nonalcoholic fatty liver disease (NAFLD). This study examined the effects of OXY on in vitro model of NAFLD in hepatocyte by the liver X receptor α (LXRα)-mediated induction of lipogenic genes and in vivo model in mice along with its molecular mechanism. OXY inhibited the LXRα agonists-mediated sterol regulatory element binding protein-1c (SREBP-1c) induction and expression of the lipogenic genes and upregulated the mRNA of fatty acid β-oxidation-related genes in hepatocytes, which is more potent than genistein and daidzein. OXY also induced AMP-activated protein kinase (AMPK) activation in a time-dependent manner. Moreover, AMPK activation by the OXY treatment helped inhibit SREBP-1c using compound C as an AMPK antagonist. Oral administration of OXY decreased the Oil Red O stained-positive areas significantly, indicating lipid droplets and hepatic steatosis regions, as well as the serum parameters, such as fasting glucose, total cholesterol, and low density lipoprotein-cholesterol in high fat diet fed-mice, as similar with orally treatment of atorvastatin. Overall, this result suggests that OXY has the potency to inhibit hepatic lipogenesis through the AMPK/SREBP-1c pathway and can be used in the development of pharmaceuticals to prevent a fatty liver.
Collapse
Affiliation(s)
- Ju-Hee Lee
- College of Oriental Medicine, Daegu Haany University, Gyeongsan, 38610, South Korea; College of Korean Medicine, Dongguk University, Gyeongju, 38066, South Korea
| | - Su Youn Baek
- College of Oriental Medicine, Daegu Haany University, Gyeongsan, 38610, South Korea
| | - Eun Jeong Jang
- College of Oriental Medicine, Daegu Haany University, Gyeongsan, 38610, South Korea
| | - Sae Kwang Ku
- College of Oriental Medicine, Daegu Haany University, Gyeongsan, 38610, South Korea
| | - Kyu Min Kim
- College of Pharmacy, Chosun University, Gwangju, 61452, South Korea
| | - Sung Hwan Ki
- College of Pharmacy, Chosun University, Gwangju, 61452, South Korea
| | - Chang-Eop Kim
- College of Oriental Medicine, Gachon University, Seongnam, Gyeonggido, 13120, South Korea
| | - Kwang Il Park
- Korea Institute of Oriental Medicine, Daegeon, 34054, South Korea
| | - Sang Chan Kim
- College of Oriental Medicine, Daegu Haany University, Gyeongsan, 38610, South Korea
| | - Young Woo Kim
- College of Oriental Medicine, Daegu Haany University, Gyeongsan, 38610, South Korea.
| |
Collapse
|
35
|
Jung WM, Park IS, Lee YS, Kim CE, Lee H, Hahm DH, Park HJ, Jang BH, Chae Y. Characterization of hidden rules linking symptoms and selection of acupoint using an artificial neural network model. Front Med 2018; 13:112-120. [PMID: 29651775 DOI: 10.1007/s11684-017-0582-z] [Citation(s) in RCA: 14] [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: 10/31/2016] [Accepted: 08/15/2017] [Indexed: 01/04/2023]
Abstract
Comprehension of the medical diagnoses of doctors and treatment of diseases is important to understand the underlying principle in selecting appropriate acupoints. The pattern recognition process that pertains to symptoms and diseases and informs acupuncture treatment in a clinical setting was explored. A total of 232 clinical records were collected using a Charting Language program. The relationship between symptom information and selected acupoints was trained using an artificial neural network (ANN). A total of 11 hidden nodes with the highest average precision score were selected through a tenfold cross-validation. Our ANN model could predict the selected acupoints based on symptom and disease information with an average precision score of 0.865 (precision, 0.911; recall, 0.811). This model is a useful tool for diagnostic classification or pattern recognition and for the prediction and modeling of acupuncture treatment based on clinical data obtained in a real-world setting. The relationship between symptoms and selected acupoints could be systematically characterized through knowledge discovery processes, such as pattern identification.
Collapse
Affiliation(s)
- Won-Mo Jung
- Department of Science in Korean Medicine, Graduate School, Kyung Hee University, Seoul, 130-701, Republic of Korea
| | - In-Soo Park
- Acupuncture & Meridian Science Research Center, College of Korean Medicine, Kyung Hee University, Seoul, 130-701, Republic of Korea
| | - Ye-Seul Lee
- Department of Science in Korean Medicine, Graduate School, Kyung Hee University, Seoul, 130-701, Republic of Korea.,Acupuncture & Meridian Science Research Center, College of Korean Medicine, Kyung Hee University, Seoul, 130-701, Republic of Korea
| | - Chang-Eop Kim
- Department of Physiology, College of Korean Medicine, Gachon University, Seoul, 131-120, Republic of Korea
| | - Hyangsook Lee
- Department of Science in Korean Medicine, Graduate School, Kyung Hee University, Seoul, 130-701, Republic of Korea.,Acupuncture & Meridian Science Research Center, College of Korean Medicine, Kyung Hee University, Seoul, 130-701, Republic of Korea
| | - Dae-Hyun Hahm
- Acupuncture & Meridian Science Research Center, College of Korean Medicine, Kyung Hee University, Seoul, 130-701, Republic of Korea.,Department of Physiology, School of Medicine, Kyung Hee University, Seoul, 130-701, Republic of Korea
| | - Hi-Joon Park
- Department of Science in Korean Medicine, Graduate School, Kyung Hee University, Seoul, 130-701, Republic of Korea.,Acupuncture & Meridian Science Research Center, College of Korean Medicine, Kyung Hee University, Seoul, 130-701, Republic of Korea
| | - Bo-Hyoung Jang
- Department of Preventive Medicine, College of Korean Medicine, Kyung Hee University, Seoul, 130-701, Republic of Korea
| | - Younbyoung Chae
- Department of Science in Korean Medicine, Graduate School, Kyung Hee University, Seoul, 130-701, Republic of Korea. .,Acupuncture & Meridian Science Research Center, College of Korean Medicine, Kyung Hee University, Seoul, 130-701, Republic of Korea.
| |
Collapse
|
36
|
Park SY, Park JH, Kim HS, Lee CY, Lee HJ, Kang KS, Kim CE. Systems-level mechanisms of action of Panax ginseng: a network pharmacological approach. J Ginseng Res 2018; 42:98-106. [PMID: 29348728 PMCID: PMC5766701 DOI: 10.1016/j.jgr.2017.09.001] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [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: 08/18/2017] [Revised: 08/30/2017] [Accepted: 09/05/2017] [Indexed: 02/04/2023] Open
Abstract
Panax ginseng has been used since ancient times based on the traditional Asian medicine theory and clinical experiences, and currently, is one of the most popular herbs in the world. To date, most of the studies concerning P. ginseng have focused on specific mechanisms of action of individual constituents. However, in spite of many studies on the molecular mechanisms of P. ginseng, it still remains unclear how multiple active ingredients of P. ginseng interact with multiple targets simultaneously, giving the multidimensional effects on various conditions and diseases. In order to decipher the systems-level mechanism of multiple ingredients of P. ginseng, a novel approach is needed beyond conventional reductive analysis. We aim to review the systems-level mechanism of P. ginseng by adopting novel analytical framework-network pharmacology. Here, we constructed a compound-target network of P. ginseng using experimentally validated and machine learning-based prediction results. The targets of the network were analyzed in terms of related biological process, pathways, and diseases. The majority of targets were found to be related with primary metabolic process, signal transduction, nitrogen compound metabolic process, blood circulation, immune system process, cell-cell signaling, biosynthetic process, and neurological system process. In pathway enrichment analysis of targets, mainly the terms related with neural activity showed significant enrichment and formed a cluster. Finally, relative degrees analysis for the target-disease association of P. ginseng revealed several categories of related diseases, including respiratory, psychiatric, and cardiovascular diseases.
Collapse
Affiliation(s)
- Sa-Yoon Park
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam, Republic of Korea
| | - Ji-Hun Park
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam, Republic of Korea
| | - Hyo-Su Kim
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam, Republic of Korea
| | - Choong-Yeol Lee
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam, Republic of Korea
| | - Hae-Jeung Lee
- Department of Food and Nutrition, College of BioNano Technology, Gachon University, Seongnam, Republic of Korea
| | - Ki Sung Kang
- Department of Preventive Medicine, College of Korean Medicine, Gachon University, Seongnam, Republic of Korea
| | - Chang-Eop Kim
- Department of Physiology, College of Korean Medicine, Gachon University, Seongnam, Republic of Korea
| |
Collapse
|
37
|
Vogiatzi MG, Li D, Tian L, Garifallou JP, Kim CE, Hakonarson H, Levine MA. A novel dominant COL11A1 mutation in a child with Stickler syndrome type II is associated with recurrent fractures. Osteoporos Int 2018; 29:247-251. [PMID: 28971234 DOI: 10.1007/s00198-017-4229-3] [Citation(s) in RCA: 8] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Accepted: 09/14/2017] [Indexed: 10/18/2022]
Abstract
UNLABELLED This case describes a child with blindness, recurrent low-impact fractures, low bone mass, and intermittent joint pain who was found to have a novel missense mutation in COL11A1, consistent with Stickler syndrome type II. The case illustrates the phenotypic variability of the syndrome, which may include increased fragility in childhood. INTRODUCTION Stickler syndrome type II is an autosomal dominant disorder caused by mutations in the gene that encodes the type XI collagen chain α1 (COL11A1). Manifestations include craniofacial dysmorphology and ocular abnormalities that may lead to blindness, hearing loss, and skeletal anomalies that range from joint pain and arthritis to scoliosis and hypermobility. METHODS Herein, we describe a child who carried the presumed diagnosis of osteoporosis-pseudoglioma syndrome because of the combined findings of recurrent low-impact fractures due to low bone mass and blindness. The child also suffered from joint pain but had no facial dysmorphism or hearing loss. RESULTS Targeted sequencing and deletion analysis of the LRP5, COL1A1, and COL1A2 genes failed to identify any mutations, and whole exome sequence analysis revealed a novel missense mutation (c.3032C>A:p.P1011Q) in COL11A1, consistent with Stickler type II. CONCLUSION This case highlights the phenotypic variability of Stickler type II, broadens the list of differential diagnosis of increased bone fragility in childhood, and highlights utility of unbiased genetic testing towards establishing the correct diagnosis in children with frequent fractures.
Collapse
Affiliation(s)
- M G Vogiatzi
- Division of Endocrinology and Diabetes, Children's Hospital of Philadelphia, 3401 Civic Center Blvd., Suite 11NW 30, Philadelphia, PA, 19104, USA.
| | - D Li
- Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA
| | - L Tian
- Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA
| | - J P Garifallou
- Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA
| | - C E Kim
- Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA
| | - H Hakonarson
- Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA
| | - M A Levine
- Division of Endocrinology and Diabetes, Children's Hospital of Philadelphia, 3401 Civic Center Blvd., Suite 11NW 30, Philadelphia, PA, 19104, USA
| |
Collapse
|
38
|
Park JY, Lee DS, Kim CE, Shin MS, Seo CS, Shin HK, Hwang GS, An JM, Kim SN, Kang KS. Effects of fermented black ginseng on wound healing mediated by angiogenesis through the mitogen-activated protein kinase pathway in human umbilical vein endothelial cells. J Ginseng Res 2017; 42:524-531. [PMID: 30337813 PMCID: PMC6190532 DOI: 10.1016/j.jgr.2017.07.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Revised: 07/12/2017] [Accepted: 07/18/2017] [Indexed: 02/06/2023] Open
Abstract
Background Fermented black ginseng (FBG) is produced through several cycles of steam treatment of raw ginseng, at which point its color turns black. During this process, the original ginsenoside components of raw ginseng (e.g., Re, Rg1, Rb1, Rc, and Rb2) are altered, and less-polar ginsenosides are generated (e.g., Rg3, Rg5, Rk1, and Rh4). The aim of this study was to determine the effect of FBG on wound healing. Methods The effects of FBG on tube formation and on scratch wound healing were measured using human umbilical vein endothelial cells (HUVECs) and HaCaT cells, respectively. Protein phosphorylation of mitogen-activated protein kinase was evaluated via Western blotting. Finally, the wound-healing effects of FBG were assessed using an experimental cutaneous wounds model in mice. Results and Conclusion The results showed that FBG enhanced the tube formation in HUVECs and migration in HaCaT cells. Western blot analysis revealed that FBG stimulated the phosphorylation of p38 and extracellular signal-regulated kinase in HaCaT cells. Moreover, mice treated with 25 μg/mL of FBG exhibited faster wound closure than the control mice did in the experimental cutaneous wounds model in mice.
Collapse
Affiliation(s)
- Jun Yeon Park
- College of Korean Medicine, Gachon University, Seongnam, Republic of Korea
| | - Dong-Soo Lee
- Institute of Human-Environment Interface Biology, Biomedical Research Institute, Department of Dermatology, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Chang-Eop Kim
- College of Korean Medicine, Gachon University, Seongnam, Republic of Korea
| | - Myoung-Sook Shin
- Natural Products Research Institute, Korea Institute of Science and Technology, Gangneung, Republic of Korea
| | - Chang-Seob Seo
- K-herb Research Center, Korea Institute of Oriental Medicine, Daejeon, Republic of Korea
| | - Hyeun-Kyoo Shin
- K-herb Research Center, Korea Institute of Oriental Medicine, Daejeon, Republic of Korea
| | - Gwi Seo Hwang
- College of Korean Medicine, Gachon University, Seongnam, Republic of Korea
| | - Jun Min An
- GINSENG BY PHARM Co., Ltd., Wonju, Republic of Korea
| | - Su-Nam Kim
- Natural Products Research Institute, Korea Institute of Science and Technology, Gangneung, Republic of Korea
| | - Ki Sung Kang
- College of Korean Medicine, Gachon University, Seongnam, Republic of Korea
| |
Collapse
|
39
|
Kim KH, Lee D, Lee HL, Kim CE, Jung K, Kang KS. Beneficial effects of Panax ginseng for the treatment and prevention of neurodegenerative diseases: past findings and future directions. J Ginseng Res 2017; 42:239-247. [PMID: 29989012 PMCID: PMC6035378 DOI: 10.1016/j.jgr.2017.03.011] [Citation(s) in RCA: 98] [Impact Index Per Article: 14.0] [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: 11/16/2016] [Accepted: 03/15/2017] [Indexed: 01/20/2023] Open
Abstract
In recent years, several therapeutic drugs have been rationally designed and synthesized based on the novel knowledge gained from investigating the actions of biologically active chemicals derived from foods, plants, and medicinal herbs. One of the major advantages of these naturalistic chemicals is their ability to interact with multiple targets in the body resulting in a combined beneficial effect. Ginseng is a perennial herb (Araliaceae family), a species within the genus Panax, and a highly valued and popular medicinal plant. Evidence for the medicinal and health benefits of Panax ginseng and its components in preventing neurodegeneration has increased significantly in the past decade. The beneficial effects of P. ginseng on neurodegenerative diseases have been attributed primarily to the antioxidative and immunomodulatory activities of its ginsenoside components. Mechanistic studies on the neuroprotective effects of ginsenosides revealed that they act not only as antioxidants but also as modulators of intracellular neuronal signaling and metabolism, cell survival/death genes, and mitochondrial function. The goal of the present paper is to provide a brief review of recent knowledge and developments concerning the beneficial effects as well as the mechanism of action of P. ginseng and its components in the treatment and prevention of neurodegenerative diseases.
Collapse
Affiliation(s)
- Ki Hyun Kim
- School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea
| | - Dahae Lee
- School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea
| | - Hye Lim Lee
- College of Korean Medicine, Gachon University, Seongnam, Republic of Korea
| | - Chang-Eop Kim
- College of Korean Medicine, Gachon University, Seongnam, Republic of Korea
| | - Kiwon Jung
- Institute of Pharmaceutical Sciences, College of Pharmacy, CHA University, Sungnam, Republic of Korea
| | - Ki Sung Kang
- College of Korean Medicine, Gachon University, Seongnam, Republic of Korea
| |
Collapse
|
40
|
Kim CE, Kim YK, Chung G, Jeong JM, Lee DS, Kim J, Kim SJ. Large-scale plastic changes of the brain network in an animal model of neuropathic pain. Neuroimage 2014; 98:203-15. [DOI: 10.1016/j.neuroimage.2014.04.063] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Revised: 03/17/2014] [Accepted: 04/23/2014] [Indexed: 11/16/2022] Open
|
41
|
Kim CE, Kim YK, Chung G, Im HJ, Lee DS, Kim J, Kim SJ. Identifying neuropathic pain using 18F-FDG micro-PET: A multivariate pattern analysis. Neuroimage 2014; 86:311-6. [DOI: 10.1016/j.neuroimage.2013.10.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Revised: 06/30/2013] [Accepted: 10/01/2013] [Indexed: 01/03/2023] Open
|
42
|
Cardinale CJ, Wei Z, Panossian S, Wang F, Kim CE, Mentch FD, Chiavacci RM, Kachelries KE, Pandey R, Grant SFA, Baldassano RN, Hakonarson H. Targeted resequencing identifies defective variants of decoy receptor 3 in pediatric-onset inflammatory bowel disease. Genes Immun 2013; 14:447-52. [DOI: 10.1038/gene.2013.43] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Accepted: 07/19/2013] [Indexed: 12/14/2022]
|
43
|
Park JH, Kim CE, Shin J, Im C, Koh CS, Seo IS, Kim SJ, Shin HC. Detecting bladder fullness through the ensemble activity patterns of the spinal cord unit population in a somatovisceral convergence environment. J Neural Eng 2013; 10:056009. [DOI: 10.1088/1741-2560/10/5/056009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
|
44
|
Jang EH, Choi JY, Park CS, Lee SK, Kim CE, Park HJ, Kang JS, Lee JW, Kang JH. Effects of green tea extract administration on the pharmacokinetics of clozapine in rats. J Pharm Pharmacol 2010; 57:311-6. [PMID: 15807986 DOI: 10.1211/0022357055687] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Abstract
The pharmacokinetic interaction between clozapine, an atypical antipsychotic with metabolic complications, including weight gain, and green tea consumption has not been evaluated, although green tea is responsible for beneficial effects, including weight reduction, and is widely consumed in the world. Commercial green tea extract (175 mg kg−1) or saline was administered orally for 4 days before the oral administration of clozapine (20 mg kg−1) to rats. Plasma concentrations of clozapine were measured up to 5 h after clozapine administration, and then hepatic CYP1A2 expression and activity were determined. There was no significant difference in the elimination half-life of clozapine between the green tea extract and saline groups. However, the time to reach peak concentration (Tmax) was significantly increased by green tea extract. The mean total area under the plasma concentration-time curve (AUC0-∞) and maximal peak plasma concentration (Cmax) of clozapine in the green tea extract group were significantly lower than those of controls. Green tea extract induced a ∼2-fold increase in hepatic CYP1A2 levels, while the activity increased slightly (by 10% of control). Because of this reduction in AUC and Tmax of clozapine by green tea extract pretreatment, we suggest that both the rate and amount of absorption of clozapine may be reduced by green tea extract, although the hepatic elimination phase may not be significantly altered. Therefore, the clinical implications of the effects of green tea on the bioavailability of clozapine in patients should be further evaluated.
Collapse
Affiliation(s)
- E H Jang
- Department of Pharmacology and Medicinal Toxicology Research Center, CDIR, College of Medicine, Inha Research Institute for Medical Science, Inha University, Incheon, Korea
| | | | | | | | | | | | | | | | | |
Collapse
|
45
|
Roh HK, Kim CE, Chung WG, Park CS, Svensson JO, Bertilsson L. Risperidone metabolism in relation to CYP2D6*10 allele in Korean schizophrenic patients. Eur J Clin Pharmacol 2001; 57:671-5. [PMID: 11791898 DOI: 10.1007/s002280100372] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
OBJECTIVE Risperidone is known to be biotransformed to its active metabolite, 9-hydroxyrisperidone, by the polymorphic CYP2D6 in Caucasians. This study aimed to investigate the relationship between the CYP2D6*10 allele and the plasma levels of risperidone and 9-hydroxyrisperidone in Korean schizophrenic patients. METHODS Eighty-two Korean schizophrenic patients in monotherapy with oral doses of risperidone from 1 mg/day to 8 mg/day (mean +/- SD 4.3 +/- 1.9, median 4) participated in this study. Plasma concentrations of risperidone and 9-hydroxyrisperidone were analyzed using high-performance liquid chromatography. The CYP2D6*10 allele, which contains C188T mutation in exon 1, was identified using allele-specific polymerase chain reaction amplification. RESULTS Seventeen of 82 patients were homozygous for CYP2D6*1, 22 for *10, while the remaining 43 patients were heterozygous for these alleles. The plasma levels of risperidone and 9-hydroxyrisperidone ranged from 1.0 nM to 168 nM and 6.2 nM to 235 nM, respectively. The median concentrations/dose (C/Ds) (range) of risperidone in CYP2D6*1/*1, *1/*10, and *10/*10 groups were 1.7 (0.2-7.9), 2.6 (0.3-27.1), and 6.7 nM/mg (2.4-21.0), respectively. There was a statistically significant difference among the three genotypes (Kruskal-Wallis test, P<0.001). For 9-hydroxyriperidone, the corresponding median C/Ds were 13.1 (3.3-25.4), 11.9 (4.2-30.8), and 13.6 nM/mg (6.5-52.8), respectively, with no significant difference between the genotypes (P=0.54). The medians of the ratios between risperidone and 9-hydroxyrisperidone concentrations were 0.13 (0.01-0.93), 0.28 (0.01-2.77), and 0.46 nM/mg (0.05-1.28) in *1/*1, *1/*10, and *10/*10 genotypes, respectively, and they were significantly different (P=0.004). The active moieties (sum of the C/Ds of risperidone and 9-hydroxyrisperidone) were not significantly different between the genotypes (P=0.063). CONCLUSION In Korean schizophrenic patients, the metabolism of risperidone is dependent on CYP2D6, and the CYP2D6*10 allele is important for the regulation of the activity of this enzyme. There were no significant differences in the plasma concentration of parent drug plus its active metabolite between the genotypes. This suggests that the clinical significance of this polymorphism is limited. Our study confirms previous studies on risperidone metabolism in Caucasians.
Collapse
Affiliation(s)
- H K Roh
- Department of Medical Laboratory Sciences and Toxicology, Karolinska Institutet, Huddinge University Hospital, Stockholm, Sweden.
| | | | | | | | | | | |
Collapse
|
46
|
Guttormsen AB, Ueland PM, Kruger WD, Kim CE, Ose L, Følling I, Refsum H. Disposition of homocysteine in subjects heterozygous for homocystinuria due to cystathionine beta-synthase deficiency: relationship between genotype and phenotype. Am J Med Genet 2001; 100:204-13. [PMID: 11343305 DOI: 10.1002/ajmg.1247] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
We have investigated 31 subjects from five unrelated families with one or more members with cystathionine beta-synthase (CBS) deficiency. On the basis of their CBS genotype, the subjects were grouped as normal (n = 11) or heterozygotes (n = 20). Based on pyridoxine effect in the probands, the heterozygotes were further classified as pyridoxine-responsive (n = 9) or non-responsive (n = 11). Heterozygous subjects had normal fasting total plasma homocysteine (tHcy), but median urinary tHcy excretion rate was significantly elevated compared to healthy controls (0.39 micromol/h vs 0.24 micromol/h, P < 0.05). An abnormal tHcy response after methionine loading identified 73% of the pyridoxine non-responsive heterozygotes, but only 33% of the pyridoxine responsive participants. The increase in cystathionine or the change in tHcy relative to cystathionine did not improve diagnostic accuracy of the methionine loading test. After Hcy loading, the maximal increase in tHcy was significantly elevated, whereas t(1/2) was normal in heterozygotes. In conclusion, a single biochemical test cannot discriminate CBS heterozygotes from controls. Abnormal tHcy response after methionine loading was the most sensitive test. Our data suggest that the urinary tHcy excretion rate is a simple, non-invasive approach for studying mild disturbances in Hcy metabolism.
Collapse
Affiliation(s)
- A B Guttormsen
- LOCUS for Homocysteine and Related Vitamins, University of Bergen, Armauer Hansens Hus, Bergen, Norway.
| | | | | | | | | | | | | |
Collapse
|
47
|
Bernardino AL, Ferri A, Passos-Bueno MR, Kim CE, Nakaie CM, Gomes CE, Damaceno N, Zatz M. Molecular analysis in Brazilian cystic fibrosis patients reveals five novel mutations. Genet Test 2000; 4:69-74. [PMID: 10794365 DOI: 10.1089/109065700316516] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
We have performed molecular genetic analyses on 160 Brazilian patients diagnosed with cystic fibrosis (CF). Screening of mutations in 320 CF chromosomes was performed through single strand conformation polymorphism (SSCP) and heteroduplex analyses assay followed by DNA sequencing of the 27 exons and exon/intron boundaries of the cystic fibrosis transmembrane conductance regulator (CFTR) gene. The frequency of CFTR variants of T-tract length of intron 8 (IVS8 Tn) was also investigated. This analysis enabled the detection of 232/320 CF mutations (72.2%) and complete genotyping of 61% of the patients. The deltaF508 mutation was found in 48.4% of the alleles. Another fifteen mutations (previously reported) were detected: G542X, R1162X, N1303K, R334W, W1282X, G58E, L206W, R553X, 621+1G-->T, V232D, 1717-1G-->A, 2347 delG, R851L, 2789+5G-->A, and W1089X. Five novel mutations were identified, V201M (exon 6a), Y275X (exon 6b), 2686 insT (exon 14a), 3171 delC (exon 17a), and 3617 delGA (exon 19). These results contribute to the molecular characterization of CF in the Brazilian population. In addition, the identification of the novel mutation Y275X allowed prenatal diagnosis in a high-risk fetus.
Collapse
Affiliation(s)
- A L Bernardino
- Departamento de Biologia, Universidade de São Paulo, Brazil
| | | | | | | | | | | | | | | |
Collapse
|
48
|
Rha CY, Kang SK, Kim CE. Investigation of the stability of hardened slag paste for the stabilization/solidification of wastes containing heavy metal ions. J Hazard Mater 2000; 73:255-267. [PMID: 10751696 DOI: 10.1016/s0304-3894(99)00185-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
We have studied the effect of chromium ions and lead ions on the chemical stability of hardened slag paste with toxic wastes during the stabilization/solidification process. The influences of Cr and Pb ions on the hydration of slag were also investigated. Sodium silicate (Na(2)SiO(3)), 5 wt.% of slag, was used as an alkali activator for slag hydration. The physical stability of hardened paste containing partial replacement of slag with fly ash and gypsum was also examined. When gypsum was added to slag, the compressive strength of hardened slag paste developed, accompanying the activation of alumino-ferrite-tricalciumsulfate (Al(2)O(3)-Fe(2)O(3)-3CaSO(4), AFt) and alumino-ferrite-monocalciumsulfate (Al(2)O(3)-Fe(2)O(3)-CaSO(4), AFm) phase generation. Those phases caused densification of the microstructure. Concurrently, the leaching amount of heavy metal ions was decreased. When fly ash was added to slag, the compressive strength increased and the leaching amount decreased with both active formation of aluminate hydrates and ion substitution. Lead ions were mostly stabilized through physical encapsulation by the hardened slag paste's hydrate matrix. In the case of chromium ions, we observed that it was mainly solidified through the formation of a substitutional solid solution with aluminum atoms in the structure of aluminate hydrates.
Collapse
Affiliation(s)
- C Y Rha
- Department of Ceramic Engineering, Yonsei University, 134 Shinchon-dong, Seodaemoon-ku, Seoul, South Korea
| | | | | |
Collapse
|
49
|
Abstract
To determine whether gravity influences the plane of bilateral symmetry in medaka embryos, zygotes were placed with their animal-vegetal axis orientated vertically and with their vegetal pole elevated. Then, at regular intervals during the first cell cycle, the zygotes were tilted 90 degrees for about 10 min and subsequently returned to their original orientation. In embryos tilted during the first half of the first cell cycle, the embryonic shield formed on the side that had been lowermost when the zygote was tilted. In embryos that were tilted twice, first in one direction and then in the opposite direction, the embryonic shield formed on the side that was lowermost the first time. When zygotes were centrifuged at 5 g, the embryonic shield formed on the outwardly radial (centrifugal) side of the embryo. The orientation of the array of parallel microtubules in the vegetal pole region was also influenced by tilting or centrifuging zygotes. No correlation was found between the positions of the polar body and the micropyle and the plane of bilateral symmetry. It was concluded that gravity influences both the plane of bilateral symmetry and the orientation of microtubules in the vegetal pole region of medaka embryos.
Collapse
Affiliation(s)
- R A Fluck
- Department of Biology, Franklin and Marshall College, Lancaster, Pennsylvania 17604-3003, USA.
| | | | | | | | | |
Collapse
|
50
|
Kim CE, Gallagher PM, Guttormsen AB, Refsum H, Ueland PM, Ose L, Folling I, Whitehead AS, Tsai MY, Kruger WD. Functional modeling of vitamin responsiveness in yeast: a common pyridoxine-responsive cystathionine beta-synthase mutation in homocystinuria. Hum Mol Genet 1997; 6:2213-21. [PMID: 9361025 DOI: 10.1093/hmg/6.13.2213] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Cystathionine beta-synthase (CBS) deficiency is an autosomal recessive disorder which results in extremely elevated levels of total plasma homocysteine (tHcy) and high risk of thromboembolic events. About half of all patients diagnosed with CBS deficiency respond to pyridoxine treatment with a significant lowering of tHcy levels. We examined 12 CBS-deficient patients from 10 Norwegian families for mutations in the CBS gene and identified mutations in 18 of the 20 CBS alleles. Five of the seven patients classified as pyridoxine-responsive contain the newly identified point mutation, G797A (R266K). This point mutation is tightly linked with a previously identified 'benign' 68 bp duplication of the intron 7-exon 8 boundary within the CBS gene. We tested the effect of all of the mutations identified on human CBS function utilizing a yeast system. Five of the six mutations had a distinguishable phenotype in yeast, indicating that they were in fact pathogenic. Interestingly, the G797A allele had no phenotype when the yeast were grown in high concentrations of pyridoxine, but a severe phenotype when grown in low concentrations, thus mirroring the behavior in humans. These studies show that the G797A mutation is an important cause of pyridoxine-responsive CBS deficiency and demonstrate the utility of yeast functional assays in the analysis of human mutations.
Collapse
Affiliation(s)
- C E Kim
- Division of Population Science, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
| | | | | | | | | | | | | | | | | | | |
Collapse
|