1
|
Messire G, Rollin P, Gillaizeau I, Berteina-Raboin S. Synthetic Modifications of Andrographolide Targeting New Potential Anticancer Drug Candidates: A Comprehensive Overview. Molecules 2024; 29:2884. [PMID: 38930949 PMCID: PMC11206892 DOI: 10.3390/molecules29122884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2024] [Revised: 06/10/2024] [Accepted: 06/13/2024] [Indexed: 06/28/2024] Open
Abstract
This review collects the synthetic modifications performed on andrographolide, a natural molecule derived from Andrographis paniculata, for oncology applications. Various pharmacomodulations were carried out, and the products were tested on different cancer cell lines. The impact of these modifications was analyzed with the aim of mapping the positions essential for activity to facilitate future research in this field. However, this study makes it clear that, in addition to structural modifications of the molecule, which can result in varying degrees of effectiveness in targeting interactions, the lipophilic capacity of the structures obtained through hemisynthesis is of significant importance.
Collapse
Affiliation(s)
| | | | | | - Sabine Berteina-Raboin
- Institut de Chimie Organique et Analytique (ICOA), Université d’Orléans, UMR-CNRS 7311, BP 6759, rue de Chartres, 45067 Orléans, Cedex 2, France; (G.M.); (P.R.); (I.G.)
| |
Collapse
|
2
|
Kumar G, Thapa S, Tali JA, Singh D, Sharma BK, Panda KN, Singh SK, Shankar R. Site-Selective Synthesis of C-17 Ester Derivatives of Natural Andrographolide for Evaluation as a Potential Anticancer Agent. ACS OMEGA 2023; 8:6099-6123. [PMID: 36816646 PMCID: PMC9933479 DOI: 10.1021/acsomega.3c00036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Accepted: 01/26/2023] [Indexed: 06/18/2023]
Abstract
A library of 57 compounds of natural andrographolide was designed, synthesized, and screened for in vitro studies against four human cancer cell lines: A594, PC-3, MCF-7, and HCT-116. Most of the synthesized compounds displayed better cytotoxic profile against all tested cells compared to the parent andrographolide (1). The tested semisynthetic derivatives of andrographolide were found to be more sensitive toward lung carcinoma (A594) and prostate carcinoma (PC-3) cell lines. Among the synthesized compounds, the C-17 p-methoxy phenyl ester analog 8s inhibited cell proliferation effectively in A549 (IC50: 6.6 μM) and PC-3 (IC50: 5.9 μM) cell variants, and compound 9s exhibited the most potent activity against the A594 cell line, with an IC50 value of 3.5 μM. Further anticancer mechanistic investigation demonstrated that compound 9s displayed nuclear morphological changes and increased reactive oxygen species (ROS) with disturbed mitochondrial membrane potential (MMP) that can lead to apoptosis. To know the exact structure confirmation of intermediate compounds 4 and 5, single X-ray crystallography was performed, which supported the complete reaction design of this work.
Collapse
Affiliation(s)
- Gulshan Kumar
- Natural
Products and Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu180001, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad201002, India
| | - Sonia Thapa
- Pharmacology
Division, CSIR-Indian Institute of Integrative
Medicine, Jammu180001, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad201002, India
| | - Javeed Ahmad Tali
- Natural
Products and Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu180001, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad201002, India
| | - Davinder Singh
- Natural
Products and Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu180001, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad201002, India
| | - Bhupesh Kumar Sharma
- Natural
Products and Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu180001, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad201002, India
| | - Kamakshya Nath Panda
- Department
of Chemistry, Indian Institute of Technology
Roorkee, Roorkee, Uttarakhand247667, India
| | - Shashank K. Singh
- Pharmacology
Division, CSIR-Indian Institute of Integrative
Medicine, Jammu180001, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad201002, India
| | - Ravi Shankar
- Natural
Products and Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Jammu180001, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad201002, India
| |
Collapse
|
3
|
Na-Bangchang K, Plengsuriyakarn T, Karbwang J. The Role of Herbal Medicine in Cholangiocarcinoma Control: A Systematic Review. PLANTA MEDICA 2023; 89:3-18. [PMID: 35468650 DOI: 10.1055/a-1676-9678] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The growing incidence of cholangiocarcinoma (bile duct cancer) and limited treatment options stimulate a pressing demand for research and the development of new chemotherapeutics against cholangiocarcinoma. This study aimed to systematically review herbs and herb-derived compounds or herbal formulations that have been investigated for their anti-cholangiocarcinoma potential. Systematic literature searches were conducted in three electronic databases: PubMed, ScienceDirect, and Scopus. One hundred and twenty-three research articles fulfilled the eligibility critera and were included in the analysis (68 herbs, isolated compounds and/or synthetic analogs, 9 herbal formulations, and 119 compounds that are commonly found in several plant species). The most investigated herbs were Atractylodes lancea (Thunb.) DC. (Compositae) and Curcuma longa L. (Zingiberaceae). Only A. lancea (Thunb.) DC. (Compositae) has undergone the full process of nonclinical and clinical development to deliver the final product for clinical use. The extracts of A. lancea (Thunb.) DC. (Compositae), Garcinia hanburyi Hook.f. (Clusiaceae), and Piper nigrum L. (Piperaceae) exhibit antiproliferative activities against human cholangiocarcinoma cells (IC50 < 15 µg/mL). Cucurbitacin B and triptolide are herbal isolated compounds that exhibit the most promising activities (IC50 < 1 µM). A series of experimental studies (in vitro, in vivo, and humans) confirmed the anti-cholangiocarcinoma potential and safety profile of A. lancea (Thunb.) DC. (Compositae) and its active compounds atractylodin and β-eudesmol, including the capsule pharmaceutical of the standardized A. lancea (Thunb.) DC. (Compositae) extract. Future research should be focused on the full development of the candidate herbs to deliver products that are safe and effective for cholangiocarcinoma control.
Collapse
Affiliation(s)
- Kesara Na-Bangchang
- Center of Excellence in Pharmacology and Molecular Biology of Malaria and Cholangiocarcinoma, Chulabhorn International College of Medicine, Thammasat University (Rangsit Campus), Klongneung, Klongluang District, Pathumthani, Thailand
- Drug Discovery and Development Center, Office of Advanced Science and Technology, Thammasat University (Rangsit Campus), Klongneung, Klongluang District, Pathumthani, Thailand
| | - Tullayakorn Plengsuriyakarn
- Center of Excellence in Pharmacology and Molecular Biology of Malaria and Cholangiocarcinoma, Chulabhorn International College of Medicine, Thammasat University (Rangsit Campus), Klongneung, Klongluang District, Pathumthani, Thailand
| | - Juntra Karbwang
- Drug Discovery and Development Center, Office of Advanced Science and Technology, Thammasat University (Rangsit Campus), Klongneung, Klongluang District, Pathumthani, Thailand
| |
Collapse
|
4
|
Jatav S, Pandey N, Dwivedi P, Akhtar A, Jyoti, Singh R, Bansal R, Mishra BB. Synthesis of deoxy-Andrographolide Triazolyl Glycoconjugates for the Treatment of Alzheimer's Disease. ACS Chem Neurosci 2022; 13:3271-3280. [PMID: 36414325 DOI: 10.1021/acschemneuro.2c00328] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
A new andrographolide-based terminal alkyne 3 was synthesized in good yield from deoxy-andrographolide 2, obtained from a natural compound andrographolide 1, which in turn was isolated from the leaves of the plant Andrographis paniculata. Copper(I)-catalyzed azide-alkyne cycloaddition reaction of alkyne 3 with azido-sugars 4a-f furnished a library of andrographolide-fastened triazolyl glycoconjugates 5a-f in good yields. The structures of these semisynthetic andrographolide derivatives were established by Fourier transform infrared, NMR, and mass spectroscopy. The compounds 5a-f were further evaluated against Alzheimer's disease (AD) using a scopolamine (SCOP)-induced memory impairment mice model. It was observed that antioxidant and anticholinesterase properties of these compounds contribute significantly toward their remarkable potential to improve cognitive functioning.
Collapse
Affiliation(s)
- Surendra Jatav
- Center of Innovative and Applied Bioprocessing (CIAB), Sector 81 (Knowledge City), S.A.S. Nagar, Mohali140306, Punjab, India.,University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh160014, India
| | - Nishant Pandey
- Center of Innovative and Applied Bioprocessing (CIAB), Sector 81 (Knowledge City), S.A.S. Nagar, Mohali140306, Punjab, India
| | - Pratibha Dwivedi
- Center of Innovative and Applied Bioprocessing (CIAB), Sector 81 (Knowledge City), S.A.S. Nagar, Mohali140306, Punjab, India
| | - Ansab Akhtar
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh160014, India
| | - Jyoti
- Center of Innovative and Applied Bioprocessing (CIAB), Sector 81 (Knowledge City), S.A.S. Nagar, Mohali140306, Punjab, India
| | - Ranjit Singh
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh160014, India
| | - Ranju Bansal
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh160014, India
| | - Bhuwan B Mishra
- Center of Innovative and Applied Bioprocessing (CIAB), Sector 81 (Knowledge City), S.A.S. Nagar, Mohali140306, Punjab, India
| |
Collapse
|
5
|
Discovery of dehydroandrographolide derivatives with C19 hindered ether as potent anti-ZIKV agents with inhibitory activities to MTase of ZIKV NS5. Eur J Med Chem 2022; 243:114710. [DOI: 10.1016/j.ejmech.2022.114710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 08/20/2022] [Accepted: 08/21/2022] [Indexed: 11/22/2022]
|
6
|
Zhang H, Li S, Si Y, Xu H. Andrographolide and its derivatives: Current achievements and future perspectives. Eur J Med Chem 2021; 224:113710. [PMID: 34315039 DOI: 10.1016/j.ejmech.2021.113710] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 07/16/2021] [Accepted: 07/16/2021] [Indexed: 12/22/2022]
Abstract
Natural product andrographolide isolated from the plant Andrographis paniculata shows a plethora of biological activities, including anti-tumor, anti-bacterial, anti-inflammation, anti-virus, anti-fibrosis, anti-obesity, immunomodulatory and hypoglycemic activities. Based on extensive chemical structural modifications, a series of andrographolide derivatives with improved bioavailability and druggability has been developed. Moreover, greater understanding of their mechanisms of action at the molecular and cellular level has been thoroughly investigated. In this review, we give an outlook for the therapeutical potential of andrographolide and its derivatives in diverse diseases and highlighted the drug design, pharmacokinetic and mechanistic studies for the past ten years, together with a brief overview of the pharmacological effects. Notably, we focused to provide a critical enlightenment of the area of andrographolide and its derivatives with the intent of indicating the future perspectives, challenges and limitations. We believe that this review paper will benefit drug discovery where andrographolide was used as a template, shed light on the identification of drug targets for andrographolide and its analogs, as well as increase our knowledge for using them for therapeutic application, including the treatment for various forms of cancers.
Collapse
Affiliation(s)
- Hang Zhang
- Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, Co-innovation Center of Henan Province for New Drug R&D and Preclinical Safety, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Shufeng Li
- Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, Co-innovation Center of Henan Province for New Drug R&D and Preclinical Safety, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Yongsheng Si
- Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, Co-innovation Center of Henan Province for New Drug R&D and Preclinical Safety, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Haiwei Xu
- Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, Co-innovation Center of Henan Province for New Drug R&D and Preclinical Safety, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan, 450001, China.
| |
Collapse
|
7
|
Kasemsuk T, Saehlim N, Arsakhant P, Sittithumcharee G, Okada S, Saeeng R. A novel synthetic acanthoic acid analogues and their cytotoxic activity in cholangiocarcinoma cells. Bioorg Med Chem 2020; 29:115886. [PMID: 33290909 DOI: 10.1016/j.bmc.2020.115886] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 11/01/2020] [Accepted: 11/07/2020] [Indexed: 12/15/2022]
Abstract
A novel series of acanthoic acid analogues containing triazole moiety were synthesized through esterification and CuAAC reaction. Evaluation of their biological activities against four cell lines of cholangiocarcinoma cells showed that 3d exhibited the strongest activity with an IC50 value of 18 µM against KKU-213 cell line, which was 8 fold more potent than acanthoic acid. Interestingly, the triazole ring and nitro group on benzyl ring play very significant role in cytotoxic activity. The computational studies revealed that 3d occupies the binding energy of -12.7 and -10.8 kcal/mol with CDK-2 and EGFR protein kinases, respectively. This result might provide a beginning for the development of acanthoic acid analogues as an anticancer agent.
Collapse
Affiliation(s)
- Teerapich Kasemsuk
- Department of Chemistry, Faculty of Science and Technology, Rambhai Barni Rajabhat University, Chanthaburi 22000, Thailand
| | - Natthiya Saehlim
- Department of Chemistry and Center for Innovation in Chemistry, Faculty of Science, Burapha University, Chonburi 20131, Thailand
| | - Patcharee Arsakhant
- Department of Chemistry and Center for Innovation in Chemistry, Faculty of Science, Burapha University, Chonburi 20131, Thailand
| | - Gunya Sittithumcharee
- Division of Hematopoiesis, Joint Research Center for Human Retrovirus Infection & Graduate School of Medical Sciences, Kumamoto University, Japan
| | - Seiji Okada
- Division of Hematopoiesis, Joint Research Center for Human Retrovirus Infection & Graduate School of Medical Sciences, Kumamoto University, Japan
| | - Rungnapha Saeeng
- Department of Chemistry and Center for Innovation in Chemistry, Faculty of Science, Burapha University, Chonburi 20131, Thailand; The Research Unit in Synthetic Compounds and Synthetic Analogues from Natural Product for Drug Discovery (RSND), Burapha University, Chonburi 20131, Thailand.
| |
Collapse
|
8
|
Hao M, Lv M, Xu H. Andrographolide: Synthetic Methods and Biological Activities. Mini Rev Med Chem 2020; 20:1633-1652. [DOI: 10.2174/1389557520666200429100326] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 09/14/2019] [Accepted: 12/03/2019] [Indexed: 12/18/2022]
Abstract
Andrographolide, a labdane diterpenoid, is extracted and isolated from the plants of
Andrographis paniculata. Andrographolide and its derivatives exhibited a wide range of biological
properties, including anticancer activity, antibacterial activity, hepatoprotective activity, antiinflammatory
activity, antiviral activity, antimalarial activity, antidiabetic activity, insecticidal activity,
etc. As a continuation, this review aims at giving an overview of the recent advances (from 2015 to
2018) of andrographolide and its derivatives with regard to bioactivities, mechanisms of action, structural
modifications, and structure-activity relationships.
Collapse
Affiliation(s)
- Meng Hao
- College of Plant Protection/Chemistry and Pharmacy, Northwest A&F University, Yangling 712100, Shaanxi Province, China
| | - Min Lv
- College of Plant Protection/Chemistry and Pharmacy, Northwest A&F University, Yangling 712100, Shaanxi Province, China
| | - Hui Xu
- College of Plant Protection/Chemistry and Pharmacy, Northwest A&F University, Yangling 712100, Shaanxi Province, China
| |
Collapse
|
9
|
Arsakhant P, Sirion U, Chairoungdua A, Suksen K, Piyachaturawat P, Suksamrarn A, Saeeng R. Design and synthesis of C-12 dithiocarbamate andrographolide analogues as an anticancer agent. Bioorg Med Chem Lett 2020; 30:127263. [DOI: 10.1016/j.bmcl.2020.127263] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 05/02/2020] [Accepted: 05/11/2020] [Indexed: 12/24/2022]
|
10
|
Andrographolide: Chemical modification and its effect on biological activities. Bioorg Chem 2020; 95:103511. [DOI: 10.1016/j.bioorg.2019.103511] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 11/28/2019] [Accepted: 12/16/2019] [Indexed: 01/31/2023]
|
11
|
Hanson JR, Nichols T, Mukhrish Y, Bagley MC. Diterpenoids of terrestrial origin. Nat Prod Rep 2019; 36:1499-1512. [DOI: 10.1039/c8np00079d] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This review covers the isolation and chemistry of diterpenoids from terrestrial sources from 2017.
Collapse
Affiliation(s)
- James R. Hanson
- Department of Chemistry
- School of Life Sciences
- University of Sussex
- East Sussex
- UK
| | - Tyler Nichols
- Department of Chemistry
- School of Life Sciences
- University of Sussex
- East Sussex
- UK
| | - Yousef Mukhrish
- Department of Chemistry
- School of Life Sciences
- University of Sussex
- East Sussex
- UK
| | - Mark C. Bagley
- Department of Chemistry
- School of Life Sciences
- University of Sussex
- East Sussex
- UK
| |
Collapse
|
12
|
Lin P, Zhong XZ, Wang XD, Li JJ, Zhao RQ, He Y, Jiang YQ, Huang XW, Chen G, He Y, Yang H. Survival analysis of genome-wide profiles coupled with Connectivity Map database mining to identify potential therapeutic targets for cholangiocarcinoma. Oncol Rep 2018; 40:3189-3198. [PMID: 30272356 PMCID: PMC6196639 DOI: 10.3892/or.2018.6710] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2018] [Accepted: 09/03/2018] [Indexed: 12/25/2022] Open
Abstract
Cholangiocarcinoma (CCA) is one of the most common epithelial cell malignancies worldwide. However, its prognosis is poor. The aim of the present study was to examine the prognostic landscape and potential therapeutic targets for CCA. RNA sequencing data and clinical information were downloaded from The Cancer Genome Atlas (TCGA) dataset and processed. A total of 172 genes that were significantly associated with overall survival of patients with CCA were identified using the univariate Cox regression method. Bioinformatics tools were applied using the Kyoto Encyclopedia of Genes and Genomes (KEGG) and gene ontology (GO). It was identified that ‘Wnt signaling pathway’, ‘cytoplasm’ and ‘AT DNA binding’ were the three most significant GO categories of CCA survival-associated genes. ‘Transcriptional misregulation in cancer’ was the most significant pathway identified in the KEGG analysis. Using the Drug-Gene Interaction database, a drug-gene interaction network was constructed, and 31 identified genes were involved in it. The most meaningful potential therapeutic targets were selected via protein-protein and gene-drug interactions. Among these genes, polo-like kinase 1 (PLK1) was identified to be a potential target due to its significant upregulation in CCA. To rapidly find molecules that may affect these genes, the Connectivity Map was queried. A series of molecules were selected for their potential anti-CCA functions. 0297417-0002B and tribenoside exhibited the highest connection scores with PLK1 via molecular docking. These findings may offer novel insights into treatment and perspectives on the future innovative treatment of CCA.
Collapse
Affiliation(s)
- Peng Lin
- Department of Medical Ultrasonics, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
| | - Xiao-Zhu Zhong
- Department of Medical Ultrasonics, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
| | - Xiao-Dong Wang
- Department of Medical Ultrasonics, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
| | - Jian-Jun Li
- Department of General Surgery, The Second Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
| | - Rui-Qi Zhao
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
| | - Yu He
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
| | - Yan-Qiu Jiang
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
| | - Xian-Wen Huang
- Department of Traditional Chinese Medicine, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
| | - Gang Chen
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
| | - Yun He
- Department of Medical Ultrasonics, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
| | - Hong Yang
- Department of Medical Ultrasonics, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
| |
Collapse
|