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Ma Y, Ma Z, Zhang Y, Luo C, Huang P, Tong J, Ding H, Liu H. Apigenin and baicalein ameliorate thoracic aortic structural deterioration and cognitive deficit via inhibiting AGEs/RAGE/NF-κB pathway in D-galactose-induced aging rats. Eur J Pharmacol 2024; 976:176660. [PMID: 38795756 DOI: 10.1016/j.ejphar.2024.176660] [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: 10/18/2023] [Revised: 05/04/2024] [Accepted: 05/16/2024] [Indexed: 05/28/2024]
Abstract
Apigenin and baicalein are structurally related flavonoids that have been reported to have multiple pharmacological activities. The aim of this study was to investigate the protective effects and potential mechanisms of apigenin and baicalein in D-galactose-induced aging rats. First, apigenin and baicalein showed remarkable antioxidant activity and anti-glycation activity in vitro. Secondly, the protective effects of apigenin and baicalein on aging rats were investigated. We found that apigenin and baicalein supplementation significantly ameliorated aging-related changes such as declines in the spatial learning and memory and histopathological damage of the hippocampus and thoracic aorta. In addition, our data showed that apigenin and baicalein alleviated oxidative stress as illustrated by decreasing MDA level, increasing SOD activity and GSH level. Further data showed that they significantly reduced the accumulation of advanced glycation end products (AGEs), inhibited the expression of RAGE, down-regulated phosphorylated nuclear factor (p-NF-κB (p65)). Our results suggested that the protective effects of apigenin and baicalein on aging rats were at least partially related to the inhibition of AGEs/RAGE/NF-κB pathway and the improvement of oxidative damage. Overall, apigenin and baicalein showed almost equal anti-aging efficacy. Our results provided an experimental basis for the application of apigenin and baicalein to delay the aging process.
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Affiliation(s)
- Yufang Ma
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Wuhan University, Wuhan, Hubei, 430072, China
| | - Zhenming Ma
- College of Software Engineering, Chengdu University of Information Technology, Chengdu, Sichuan, 610200, China
| | - Yiyuan Zhang
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Wuhan University, Wuhan, Hubei, 430072, China
| | - Chunyun Luo
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Wuhan University, Wuhan, Hubei, 430072, China
| | - Puxin Huang
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Wuhan University, Wuhan, Hubei, 430072, China
| | - Jing Tong
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Wuhan University, Wuhan, Hubei, 430072, China.
| | - Hong Ding
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Wuhan University, Wuhan, Hubei, 430072, China.
| | - Honghui Liu
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Wuhan University, Wuhan, Hubei, 430072, China.
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Zheng Y, Wang C, Liu W, Chen J, Sun Y, Chang D, Wang H, Xu W, Lu JJ, Zhou X, Huang M. Upregulation of Nrf2 signaling: A key molecular mechanism of Baicalin's neuroprotective action against diabetes-induced cognitive impairment. Biomed Pharmacother 2024; 174:116579. [PMID: 38631145 DOI: 10.1016/j.biopha.2024.116579] [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: 02/03/2024] [Revised: 04/05/2024] [Accepted: 04/10/2024] [Indexed: 04/19/2024] Open
Abstract
BACKGROUND AND AIM Diabetes-associated cognitive impairment (DCI) is a prevalent complication of diabetes. However, there is a lack of viable strategies for preventing and treating DCI. This study aims to explore the efficacy of baicalin (Bai) in attenuating DCI and elucidating the underlying mechanisms. EXPERIMENTAL PROCEDURE GK rats fed a high-fat and high-glucose diet were utilized to investigate the therapeutic potential of Bai. Cognitive function was assessed using the Morris water maze and novel object recognition tests. To gain insight into the molecular mechanisms underlying Bai's neuro-protective effects, co-cultured BV2/HT22 cells were established under high-glucose (HG) stimulation. The modes of action of Bai were subsequently confirmed in vivo using the DCI model in db/db mice. KEY RESULTS Bai restored cognitive and spatial memory and attenuated neuron loss, along with reducing expressions of Aβ and phosphorylated Tau protein in diabetic GK rats. At the cellular level, Bai exhibited potent antioxidant and anti-inflammatory effects against HG stimulation. These effects were associated with the upregulation of Nrf2 and supressed Keap1 levels. Consistent with these in vitro findings, similar mechanisms were observed in db/db mice. The significant neuroprotective effects of Bai were abolished when co-administered with ATRA, a Nrf2 blocker, in db/db mice, confirming that KEAP1-Nrf2 signaling pathway was responsible for the observed effect. CONCLUSIONS AND IMPLICATIONS Bai demonstrates a great therapeutic potential for attenuating DCI. The antioxidant defense and anti-inflammatory actions of Bai were mediated through the KEAP1-Nrf2 axis. These findings advance our understanding of potential treatment approaches for DCI, a common complication associated with diabetes.
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Affiliation(s)
- Yanfang Zheng
- College of Pharmacy, Fujian Key Laboratory of Chinese Materia Medica, Fujian University of Traditional Chinese Medicine, Fuzhou 350108, China
| | - Chenxiang Wang
- College of Pharmacy, Fujian Key Laboratory of Chinese Materia Medica, Fujian University of Traditional Chinese Medicine, Fuzhou 350108, China
| | - Wenjing Liu
- College of Pharmacy, Fujian Key Laboratory of Chinese Materia Medica, Fujian University of Traditional Chinese Medicine, Fuzhou 350108, China
| | - Jiaying Chen
- College of Pharmacy, Fujian Key Laboratory of Chinese Materia Medica, Fujian University of Traditional Chinese Medicine, Fuzhou 350108, China
| | - Yibin Sun
- College of Pharmacy, Fujian Key Laboratory of Chinese Materia Medica, Fujian University of Traditional Chinese Medicine, Fuzhou 350108, China
| | - Dennis Chang
- NICM Health Research Institute, Western Sydney University, Westmead, NSW 2145, Australia
| | - Huan Wang
- College of Pharmacy, Fujian Key Laboratory of Chinese Materia Medica, Fujian University of Traditional Chinese Medicine, Fuzhou 350108, China
| | - Wen Xu
- College of Pharmacy, Fujian Key Laboratory of Chinese Materia Medica, Fujian University of Traditional Chinese Medicine, Fuzhou 350108, China
| | - Jin-Jian Lu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Avenida da Universidade, Taipa, Macao 999078, China.
| | - Xian Zhou
- NICM Health Research Institute, Western Sydney University, Westmead, NSW 2145, Australia.
| | - Mingqing Huang
- College of Pharmacy, Fujian Key Laboratory of Chinese Materia Medica, Fujian University of Traditional Chinese Medicine, Fuzhou 350108, China.
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Song J, Li M, Kang N, Jin W, Xiao Y, Li Z, Qi Q, Zhang J, Duan Y, Feng X, Lv P. Baicalein ameliorates cognitive impairment of vascular dementia rats via suppressing neuroinflammation and regulating intestinal microbiota. Brain Res Bull 2024; 208:110888. [PMID: 38295883 DOI: 10.1016/j.brainresbull.2024.110888] [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: 10/16/2023] [Revised: 12/21/2023] [Accepted: 01/22/2024] [Indexed: 02/03/2024]
Abstract
Neuroinflammation induced by chronic cerebral hypoperfusion (CCH) plays a crucial role in the pathophysiologic mechanisms of vascular dementia (VD). A growing body of research has found that intestinal microbiota is associated with a variety of central nervous system disorders and that there is a relationship between intestinal microbiota dysbiosis and cognitive dysfunction and inflammatory responses. Baicalein belongs to the class of flavonoids and has a variety of biological functions, including anti-inflammatory, antioxidant and anti-apoptotic. Baicalein has a significant improvement in memory and learning, and can be used as a potential drug for the protection and treatment of central nervous system disorders. Whether baicalein has an ameliorative effect on cognitive impairment in VD, and whether its mechanism is related to the inhibition of inflammatory response and regulation of intestinal microbiota has not been reported. We used bilateral common carotid artery occlusion (BCCAO) to establish a VD rat model. Morris water maze (MWM) test showed that baicalein improved cognitive dysfunction in VD rats. We applied HE staining, immunofluorescence and ELISA to observe that baicalein treatment significantly improved CCH-induced neuronal damage in the CA1 region of the hippocampus, and reduced glial cell activation and release of pro-inflammatory factors. Western blot showed that baicalein inhibited the activation of the TLR4/MyD88/NF-κB signaling pathway in VD rats. We applied 16 S rDNA sequencing to analyze the composition of the intestinal microbiota. The results showed that baicalein modulated the diversity and composition of the intestinal microbiota, and suppressed the relative abundance of inflammation-associated microbiota in VD rats. In conclusion, this study found that baicalein ameliorated cognitive impairment, attenuated hippocampal inflammatory responses, inhibited the TLR4/MyD88/NF-κB signaling pathway, and modulated intestinal microbiota in VD rats.
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Affiliation(s)
- Jiaxi Song
- Department of Neurology, Hebei Medical University, Shijiazhuang, Hebei, People's Republic of China; Department of Neurology, Hebei General Hospital, Shijiazhuang, Hebei, People's Republic of China; Hebei Provincial Key Laboratory of Cerebral Networks and Cognitive Disorders, Shijiazhuang, Hebei, People's Republic of China
| | - Meixi Li
- Department of Neurology, Hebei General Hospital, Shijiazhuang, Hebei, People's Republic of China; Hebei Provincial Key Laboratory of Cerebral Networks and Cognitive Disorders, Shijiazhuang, Hebei, People's Republic of China
| | - Ning Kang
- Department of Neurology, Hebei General Hospital, Shijiazhuang, Hebei, People's Republic of China; Hebei Provincial Key Laboratory of Cerebral Networks and Cognitive Disorders, Shijiazhuang, Hebei, People's Republic of China
| | - Wei Jin
- Department of Neurology, Hebei General Hospital, Shijiazhuang, Hebei, People's Republic of China; Hebei Provincial Key Laboratory of Cerebral Networks and Cognitive Disorders, Shijiazhuang, Hebei, People's Republic of China
| | - Yining Xiao
- Department of Neurology, Hebei General Hospital, Shijiazhuang, Hebei, People's Republic of China; Hebei Provincial Key Laboratory of Cerebral Networks and Cognitive Disorders, Shijiazhuang, Hebei, People's Republic of China
| | - Zhe Li
- Department of Neurology, Hebei General Hospital, Shijiazhuang, Hebei, People's Republic of China
| | - Qianqian Qi
- Department of Neurology, Hebei Medical University, Shijiazhuang, Hebei, People's Republic of China; Department of Neurology, Hebei General Hospital, Shijiazhuang, Hebei, People's Republic of China; Hebei Provincial Key Laboratory of Cerebral Networks and Cognitive Disorders, Shijiazhuang, Hebei, People's Republic of China
| | - Jiayu Zhang
- Department of Neurology, Hebei General Hospital, Shijiazhuang, Hebei, People's Republic of China; Hebei Provincial Key Laboratory of Cerebral Networks and Cognitive Disorders, Shijiazhuang, Hebei, People's Republic of China
| | - Yaxin Duan
- Department of Neurology, Hebei General Hospital, Shijiazhuang, Hebei, People's Republic of China; Hebei Provincial Key Laboratory of Cerebral Networks and Cognitive Disorders, Shijiazhuang, Hebei, People's Republic of China
| | - Xiaoxiao Feng
- Department of Neurology, Shijiazhuang People's Hospital, Shijiazhuang, Hebei, People's Republic of China
| | - Peiyuan Lv
- Department of Neurology, Hebei Medical University, Shijiazhuang, Hebei, People's Republic of China; Department of Neurology, Hebei General Hospital, Shijiazhuang, Hebei, People's Republic of China; Hebei Provincial Key Laboratory of Cerebral Networks and Cognitive Disorders, Shijiazhuang, Hebei, People's Republic of China.
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Gao L, Zhao JX, Qin XM, Zhao J. The ethanol extract of Scutellaria baicalensis Georgi attenuates complete Freund's adjuvant (CFA)-induced inflammatory pain by suppression of P2X3 receptor. JOURNAL OF ETHNOPHARMACOLOGY 2023; 317:116762. [PMID: 37301308 DOI: 10.1016/j.jep.2023.116762] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 06/04/2023] [Accepted: 06/07/2023] [Indexed: 06/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Scutellaria baicalensis Georgi (SBG) is a perennial herb with anti-inflammatory, antibacterial, and antioxidant activities, which is traditionally used to treat inflammation of respiratory tract and gastrointestinal tract, abdominal cramps, bacterial and viral infections. Clinically, it is often used to treat inflammatory-related diseases. Research has shown that the ethanol extract of Scutellaria baicalensis Georgi (SGE) has anti-inflammatory effect, and its main components baicalin and baicalein have analgesic effects. However, the mechanism of SGE in relieving inflammatory pain has not been deeply studied. AIM OF THE STUDY This study aimed to evaluate the analgesic effect of SGE on complete Freund's adjuvant (CFA)-induced inflammatory pain rats, and to investigate whether its effect on relieving inflammatory pain is associated with regulation of P2X3 receptor. MATERIALS AND METHODS The analgesic effects of SGE on CFA-induced inflammatory pain rats were evaluated by measuring mechanical pain threshold, thermal pain threshold, and motor coordination ability. The mechanisms of SGE in relieving inflammatory pain were explored by detecting inflammatory factors levels, NF-κB, COX-2 and P2X3 expression, and were further verified by addition of P2X3 receptor agonist (α, β me-ATP). RESULTS Our results revealed that SGE can notably increase the mechanical pain threshold and thermal pain threshold of CFA-induced inflammatory pain rats, and markedly alleviate the pathological damage in DRG. SGE could suppress the release of inflammatory factors including IL-1β, IL-6, TNF-α and restrain the expression of NF-κB, COX-2 and P2X3. Moreover, α, β me-ATP further exacerbated the inflammatory pain of CFA-induced rats, while SGE could markedly raise the pain thresholds and relieve inflammatory pain. SGE could attenuate the pathological damage, inhibit P2X3 expression, inhibit the elevation of inflammatory factors caused by α, β me-ATP. SGE can also inhibit NF-κB and ERK1/2 activation caused by α, β me-ATP, and inhibit the mRNA expression of P2X3, COX-2, NF-κB, IL-1β, IL-6 and TNF-α in DRG of rats induced by CFA coupled with α, β me-ATP. CONCLUSIONS In summary, our research indicated that SGE could alleviate CFA-induced inflammatory pain by suppression of P2X3 receptor.
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Affiliation(s)
- Li Gao
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, Taiyuan, 030006, Shanxi, China; The Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, China; The Key Laboratory of Effective Substances Research and Utilization in TCM of Shanxi Province, China.
| | - Jin-Xia Zhao
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, Taiyuan, 030006, Shanxi, China; The Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, China; The Key Laboratory of Effective Substances Research and Utilization in TCM of Shanxi Province, China
| | - Xue-Mei Qin
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, Taiyuan, 030006, Shanxi, China; The Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, China; The Key Laboratory of Effective Substances Research and Utilization in TCM of Shanxi Province, China
| | - Jing Zhao
- Wolfson Institute for Biomedical Research, University College London, UK, London.
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Lin D, Xu X, Chen L, Chen L, Deng M, Chen J, Ren Z, Lei L, Wang J, Deng J, Li X. Supramolecular nanofiber of indomethacin derivative confers highly cyclooxygenase-2 (COX-2) selectivity and boosts anti-inflammatory efficacy. J Control Release 2023; 364:272-282. [PMID: 37866406 DOI: 10.1016/j.jconrel.2023.10.030] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 10/16/2023] [Accepted: 10/19/2023] [Indexed: 10/24/2023]
Abstract
Herein, we report a facile method for converting carboxylate-containing indomethacin (Idm) into a cyclooxygenase-2 (COX-2) selective inhibitor via the amidation of an unnatural peptide sequence (Nal-Nal-Asp). The resulting indomethacin amides (i.e., Idm-Nal-Nal-Asp) have high selectivity for COX-2, and can self-assemble into a one-component supramolecular hydrogel that acts as a 'self-delivery' system for boosting anti-inflammatory efficacy. Self-assembled Idm-Nal-Nal-Asp hydrogel robustly inhibits COX-2 expression in lipopolysaccharide (LPS)-activated Raw 264.7 macrophages while also exhibits superior anti-inflammatory and antioxidant activities via reactive oxygen species (ROS)-related NF-κB and Nrf2/HO-1 pathways. Moreover, a rabbit model of endotoxin-induced uveitis (EIU) reveals that the Idm-Nal-Nal-Asp hydrogel outperforms clinically used 0.1 wt% diclofenac sodium eye drops in terms of in vivo anti-inflammatory efficacy via topical instillation route. As a rational approach to designing and applying COX-2 selective inhibitors, this work presents a simple method for converting non-selective nonsteriodal anti-inflammatory drugs (NSAIDs) into highly selective COX-2 inhibitors that can self-assemble into supramolecular hydrogel for anti-inflammation applications.
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Affiliation(s)
- Deqing Lin
- National Engineering Research Center of Ophthalmology and Optometry, Eye Hospital, Wenzhou Medical University, Wenzhou 325027, China
| | - Xiaoning Xu
- National Engineering Research Center of Ophthalmology and Optometry, Eye Hospital, Wenzhou Medical University, Wenzhou 325027, China
| | - Lin Chen
- National Engineering Research Center of Ophthalmology and Optometry, Eye Hospital, Wenzhou Medical University, Wenzhou 325027, China
| | - Lei Chen
- National Engineering Research Center of Ophthalmology and Optometry, Eye Hospital, Wenzhou Medical University, Wenzhou 325027, China
| | - Mengyun Deng
- National Engineering Research Center of Ophthalmology and Optometry, Eye Hospital, Wenzhou Medical University, Wenzhou 325027, China
| | - Jinrun Chen
- National Engineering Research Center of Ophthalmology and Optometry, Eye Hospital, Wenzhou Medical University, Wenzhou 325027, China
| | - Zhibin Ren
- National Engineering Research Center of Ophthalmology and Optometry, Eye Hospital, Wenzhou Medical University, Wenzhou 325027, China
| | - Lei Lei
- National Engineering Research Center of Ophthalmology and Optometry, Eye Hospital, Wenzhou Medical University, Wenzhou 325027, China
| | - Jiaqing Wang
- National Engineering Research Center of Ophthalmology and Optometry, Eye Hospital, Wenzhou Medical University, Wenzhou 325027, China.
| | - Jie Deng
- Key Laboratory of Diagnosis and Treatment of Severe Hepato-Pancreatic Diseases of Zhejiang Province, the First Affiliated Hospital, Wenzhou Medical University, Wenzhou 325027, China.
| | - Xingyi Li
- National Engineering Research Center of Ophthalmology and Optometry, Eye Hospital, Wenzhou Medical University, Wenzhou 325027, China.
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Moreira J, Machado M, Dias-Teixeira M, Ferraz R, Delerue-Matos C, Grosso C. The neuroprotective effect of traditional Chinese medicinal plants-A critical review. Acta Pharm Sin B 2023; 13:3208-3237. [PMID: 37655317 PMCID: PMC10465969 DOI: 10.1016/j.apsb.2023.06.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 03/23/2023] [Accepted: 04/03/2023] [Indexed: 09/02/2023] Open
Abstract
Neurodegenerative and neuropsychiatric diseases are increasingly affecting individuals' quality of life, thus increasing their cost to social and health systems. These diseases have overlapping mechanisms, such as oxidative stress, protein aggregation, neuroinflammation, neurotransmission impairment, mitochondrial dysfunction, and excitotoxicity. Currently, there is no cure for neurodegenerative diseases, and the available therapies have adverse effects and low efficacy. For neuropsychiatric disorders, such as depression, the current therapies are not adequate to one-third of the patients, the so-called treatment-resistant patients. So, searching for new treatments is fundamental. Medicinal plants appear as a strong alternative and complement towards new treatment protocols, as they have been used for health purposes for thousands of years. Thus, the main goal of this review is to revisit the neuroprotective potential of some of the most predominant medicinal plants (and one fungus) used in traditional Chinese medicine (TCM), focusing on their proven mechanisms of action and their chemical compositions, to give clues on how they can be useful against neurodegeneration progression.
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Affiliation(s)
- João Moreira
- REQUIMTE/LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, Porto 4249-015, Portugal
| | - Mariana Machado
- Ciências Químicas e das Biomoléculas/CISA, Escola Superior de Saúde—Instituto Politécnico do Porto, Porto 4200-072, Portugal
| | - Mónica Dias-Teixeira
- REQUIMTE/LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, Porto 4249-015, Portugal
- NICiTeS—Núcleo de Investigação em Ciências e Tecnologias da Saúde, Escola Superior de Saúde Ribeiro Sanches, Lisboa 1950-396, Portugal
| | - Ricardo Ferraz
- Ciências Químicas e das Biomoléculas/CISA, Escola Superior de Saúde—Instituto Politécnico do Porto, Porto 4200-072, Portugal
- REQUIMTE/LAQV, Departamento de Química e Bioquímica Faculdade de Ciências, Universidade do Porto, Porto 4169-007, Portugal
| | - Cristina Delerue-Matos
- REQUIMTE/LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, Porto 4249-015, Portugal
| | - Clara Grosso
- REQUIMTE/LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, Porto 4249-015, Portugal
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Grzelka K, Matkowski A, Ślusarczyk S. Electrostimulation improves plant growth and modulates the flavonoid profile in aeroponic culture of Scutellaria baicalensis Georgi. FRONTIERS IN PLANT SCIENCE 2023; 14:1142624. [PMID: 36938053 PMCID: PMC10014570 DOI: 10.3389/fpls.2023.1142624] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 02/06/2023] [Indexed: 06/18/2023]
Abstract
UNLABELLED Scutellaria baicalensis Georgi is a valuable medicinal plant of the Lamiaceae family. The roots, Scutellariae baicalensis radix, are valued in the traditional medicine of East Asia and are also listed in several pharmacopeias, such as the Chinese and European versions. The roots contain a high amount of flavones, such as baicalein, wogonin and their glucuronides, baicalin and wogonoside, respectively, with rare structures of unsubstituted B-ring. These major constituents are responsible for its pharmacological activity, mainly anti-inflammatory, antiviral, and antitumor, as well as BDZ-receptor modulating. There is a fast-growing demand for both the crude drug and the individual flavonoids obtained from it. However, the variability of content and composition of flavonoids in the roots is significant and affects pharmaceutical use, and little is known about the influence of various factors on root quality. In our experiments, we use aeroponics to determine the effect of electroporation as an abiotic stressor on plant growth, development, and root mass, as well as on its metabolic profile. RESULTS Electroporation significantly impacted plant growth and the content of flavonoids, especially baicalein and wogonin, depending on the treatment parameters. Concentrations of aglycones were increased in at least half of the treatment conditions. The greatest amounts (a 2.5-fold increase compared to controls) were recorded after applying an electrical field characterized by the following parameters: E = 3 kV/cm, t = 100 μs, and N = 10. In conclusion, electrostimulation is an innovative and efficient way to increase plant growth and yield in an aeroponic system, as well as modulate the profile and content of bioactive flavones in the roots. However, the fine-tuning of these parameters, such as the electrical field strength (E), length (t), and number (N) of impulses delivered, is of great importance. It was also shown that cultivation of the experimental plants in aeroponics had a positive impact on their survival and development while being a sustainable and efficient horticultural practice.
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Affiliation(s)
- Kajetan Grzelka
- Department of Pharmaceutical Biology and Biotechnology, Division of Pharmaceutical Biology and Botany, Wroclaw Medical University, Wroclaw, Poland
| | - Adam Matkowski
- Department of Pharmaceutical Biology and Biotechnology, Division of Pharmaceutical Biology and Botany, Wroclaw Medical University, Wroclaw, Poland
- Botanical Garden of Medicinal Plants of the Wroclaw Medical University, Wroclaw, Poland
| | - Sylwester Ślusarczyk
- Department of Pharmaceutical Biology and Biotechnology, Division of Pharmaceutical Biology and Botany, Wroclaw Medical University, Wroclaw, Poland
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Zhang XJ, Xiao ZB, Gu JX, Chen K, Wang J, Xu SL, Xing KK, Chen T. Investigating the molecular mechanisms of delirium-like neuropsychiatric disorder induced by electromagnetic pulse based on bioinformatics analysis. Mol Brain 2023; 16:21. [PMID: 36750928 PMCID: PMC9906835 DOI: 10.1186/s13041-023-00998-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 01/03/2023] [Indexed: 02/09/2023] Open
Abstract
Electromagnetic pulse (EMP), a unique type of electromagnetic radiation, may induce diverse neuropsychiatric disorders, such as irritability, hyperkinesis, retardation of learning and memory. However, the underlying mechanism of EMP exposure on neuronal injury has not been elucidated. Here, we aimed to delineate the regulatory expression networks based on high-throughput sequencing data to explore the possible molecular mechanisms related to EMP-induced delirium-like neuropsychiatric disorder in rats. It's shown that EMP exposure induced anxiety, cognitive decline and short-term memory impairment. The expression profiles of the long noncoding RNAs (lncRNAs) and mRNAs, along with their biological function and regulatory network, were explored in rats after EMP exposure. We identified 41 differentially expressed lncRNAs (DELs) and 266 differentially expressed mRNAs (DEMs) between EMP and sham groups. Sixty-one co-expression relationships between 18 DELs and 56 DEMs were mostly associated with synapse- and metabolic-related pathways. We predicted 51 DEL-miRNA pairs and 290 miRNA-mRNA pairs using the miRanda database to constructed a DEL-miRNA-DEM network. LncRNA AABR07042999.1 and mRNA Tph2, Slc6a4, Dbh and Th were upregulated, and the contents of serotonin, dopamine and norepinephrine were increased in both PFC and HIP after EMP exposure. The current study provided a better understanding of the ceRNA network, which might reveal the pathological mechanism and provide more treatment options for the EMP-induced neurobehavioral disorder.
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Affiliation(s)
- Xia-Jing Zhang
- grid.440588.50000 0001 0307 1240Institute of Medical Research, Northwestern Polytechnical University, Xi’an, 710072 Shaanxi China ,grid.233520.50000 0004 1761 4404Department of Human Anatomy, Histology and Embryology & K.K. Leung Brain Research Centre, The Fourth Military Medical University, No. 169 Changle West Road, Xi’an, 710032 China
| | - Zhi-Bin Xiao
- grid.233520.50000 0004 1761 4404Department of Anesthesiology, The 986th Air Force Hospital, Xijing Hospital, The Fourth Military Medical University, Shaanxi 710032 Xi’an, China
| | - Jun-Xiang Gu
- grid.452672.00000 0004 1757 5804Department of Neurosurgery, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an 710004, China
| | - Kun Chen
- grid.233520.50000 0004 1761 4404Department of Human Anatomy, Histology and Embryology & K.K. Leung Brain Research Centre, The Fourth Military Medical University, No. 169 Changle West Road, Xi’an, 710032 China
| | - Jian Wang
- grid.460007.50000 0004 1791 6584Department of Neurosurgery, Tangdu Hospital, The Fourth Military Medical University, Xi’an, 710038 China
| | - Sheng-Long Xu
- grid.233520.50000 0004 1761 4404Department of Radiation Biology, Faculty of Preventive Medicine, The Fourth Military Medical University, Xi’an, 710032 China
| | - Ke-Ke Xing
- grid.233520.50000 0004 1761 4404Department of Human Anatomy, Histology and Embryology & K.K. Leung Brain Research Centre, The Fourth Military Medical University, No. 169 Changle West Road, Xi’an, 710032 China
| | - Tao Chen
- Institute of Medical Research, Northwestern Polytechnical University, Xi'an, 710072, Shaanxi, China. .,Department of Human Anatomy, Histology and Embryology & K.K. Leung Brain Research Centre, The Fourth Military Medical University, No. 169 Changle West Road, Xi'an, 710032, China.
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Puri V, Kanojia N, Sharma A, Huanbutta K, Dheer D, Sangnim T. Natural product-based pharmacological studies for neurological disorders. Front Pharmacol 2022; 13:1011740. [PMID: 36419628 PMCID: PMC9676372 DOI: 10.3389/fphar.2022.1011740] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 10/18/2022] [Indexed: 11/07/2023] Open
Abstract
Central nervous system (CNS) disorders and diseases are expected to rise sharply in the coming years, partly because of the world's aging population. Medicines for the treatment of the CNS have not been successfully made. Inadequate knowledge about the brain, pharmacokinetic and dynamic errors in preclinical studies, challenges with clinical trial design, complexity and variety of human brain illnesses, and variations in species are some potential scenarios. Neurodegenerative diseases (NDDs) are multifaceted and lack identifiable etiological components, and the drugs developed to treat them did not meet the requirements of those who anticipated treatments. Therefore, there is a great demand for safe and effective natural therapeutic adjuvants. For the treatment of NDDs and other memory-related problems, many herbal and natural items have been used in the Ayurvedic medical system. Anxiety, depression, Parkinson's, and Alzheimer's diseases (AD), as well as a plethora of other neuropsychiatric disorders, may benefit from the use of plant and food-derived chemicals that have antidepressant or antiepileptic properties. We have summarized the present level of knowledge about natural products based on topological evidence, bioinformatics analysis, and translational research in this review. We have also highlighted some clinical research or investigation that will help us select natural products for the treatment of neurological conditions. In the present review, we have explored the potential efficacy of phytoconstituents against neurological diseases. Various evidence-based studies and extensive recent investigations have been included, which will help pharmacologists reduce the progression of neuronal disease.
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Affiliation(s)
- Vivek Puri
- Chitkara School of Pharmacy, Chitkara University, Baddi, Himachal Pradesh, India
| | - Neha Kanojia
- Chitkara School of Pharmacy, Chitkara University, Baddi, Himachal Pradesh, India
| | - Ameya Sharma
- Chitkara School of Pharmacy, Chitkara University, Baddi, Himachal Pradesh, India
| | - Kampanart Huanbutta
- School of Pharmacy, Eastern Asia University, Rangsit, Pathum Thani, Thailand
| | - Divya Dheer
- Chitkara School of Pharmacy, Chitkara University, Baddi, Himachal Pradesh, India
| | - Tanikan Sangnim
- Faculty of Pharmaceutical Sciences, Burapha University, Muang, Chon Buri, Thailand
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Gao L, Yang WY, Qi H, Sun CJ, Qin XM, Du GH. Unveiling the anti-senescence effects and senescence-associated secretory phenotype (SASP) inhibitory mechanisms of Scutellaria baicalensis Georgi in low glucose-induced astrocytes based on boolean network. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2022; 99:153990. [PMID: 35202958 DOI: 10.1016/j.phymed.2022.153990] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 01/31/2022] [Accepted: 02/10/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Astrocytes senescence has been demonstrated in the aging brain and Alzheimer's disease (AD). Moreover, lower glucose metabolism has been confirmed in the early stage of AD. However, whether low glucose could induce astrocytes senescence remain ambiguous. Studies have shown that the ethanol extracts of Scutellaria baicalensis Georgi (SGE) exert neuroprotective and anti-aging effects, while whether SGE could delay astrocytes senescence was unclear. PURPOSE This study investigated the anti-senescence effect of SGE in low glucose-induced T98G cells and primary astrocytes, and explored the possible mechanisms based on boolean network. METHODS The neuroprotective effects of SGE in low glucose-induced T98G cells were evaluated by measurement of cell viability, LDH, ROS and ATP. The anti-senescence effects of SGE were investigated by detection of senescence-associated β-galactosidase (SA-β-Gal), senescence-associated secretory phenotype (SASP), cell cycle and senescence-related markers. The possible mechanisms of SGE in delaying astrocytes senescence were discovered through integrating transcriptomics with boolean network, and validation experiments were further performed. RESULTS Our results revealed that low glucose could induce astrocytes senescence, and SGE could delay astrocytes senescence by decreasing the staining rate of SA-β-gal, reducing secretions of SASP factors (IL-6, CXCL1, MMP-1), alleviating cell cycle arrest in G0/G1 phase, decreasing the formation of punctate DNA foci and down-regulating the expression of p16INK4A, p21 and γH2A.X. Transcriptomics and further verification results showed that SGE could markedly inhibit the mRNA expression levels of SASP factors (CXCL10, CXCL2, CCL2, IL-6, CXCR4, CCR7). Moreover, C-X-C motif chemokine 10 (CXCL10) was predicted to be the key SASP factor affecting the network stability by using boolean network. Further experiments validated that SGE could markedly reduce CXCL10 level, decrease the secretion of IL-6 and inhibit cell migration in CXCL10 induced primary astrocytes. CONCLUSION In summary, our research unmasks that the anti-senescence effects of SGE were highly correlated with the suppression of SASP secretions, and CXCL10 mediated the SASP inhibition effect of SGE in low glucose-induced astrocytes. Our study highlights that the delay of astrocytes senescence and the inhibition of SASP might be a new mechanism of SGE for alleviating neurodegenerative diseases such as AD.
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Affiliation(s)
- Li Gao
- Modern Research Center for Traditional Chinese Medicine, the Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, Taiyuan, China; Key Laboratory of Effective Substances Research and Utilization in TCM of Shanxi Province, Taiyuan, China.
| | - Wu-Yan Yang
- Modern Research Center for Traditional Chinese Medicine, the Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, Taiyuan, China; Key Laboratory of Effective Substances Research and Utilization in TCM of Shanxi Province, Taiyuan, China
| | - Hong Qi
- Complex Systems Research Center, Shanxi University, Taiyuan, China
| | - Chang-Jun Sun
- Complex Systems Research Center, Shanxi University, Taiyuan, China
| | - Xue-Mei Qin
- Modern Research Center for Traditional Chinese Medicine, the Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, Taiyuan, China; Key Laboratory of Effective Substances Research and Utilization in TCM of Shanxi Province, Taiyuan, China
| | - Guan-Hua Du
- Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.
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Onaolapo OJ, Odeniyi AO, Onaolapo AY. Parkinson's Disease: Is there a Role for Dietary and Herbal Supplements? CNS & NEUROLOGICAL DISORDERS DRUG TARGETS 2022; 20:343-365. [PMID: 33602107 DOI: 10.2174/1871527320666210218082954] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 09/19/2020] [Accepted: 09/29/2020] [Indexed: 12/18/2022]
Abstract
Parkinson's Disease (PD) is characterised by degeneration of the neurons of the nigrostriatal dopaminergic pathway of the brain. The pharmacological cornerstone of PD management is mainly the use of dopamine precursors, dopamine receptor agonists, and agents that inhibit the biochemical degradation of dopamine. While these drugs initially provide relief to the symptoms and improve the quality of life of the patients, progression of the underlying pathological processes, such as oxidative stress and neuroinflammation (which have been strongly associated with PD and other neurodegenerative disorders), eventually reduce their benefits, making further benefits achievable, only at high doses due to which the magnitude and frequency of side-effects are amplified. Also, while it is becoming obvious that mainstream pharmacological agents may not always provide the much-needed answer, the question remains what succour can nature provide through dietary supplements, nutraceuticals and herbal remedies? This narrative review examines current literature for evidence of the possible roles (if any) of nutraceuticals, dietary supplements and herbal remedies in the prevention or management of PD by examining how these compounds could modulate key factors and pathways that are crucial to the pathogenesis and/or progression of PD. The likely limitations of this approach and its possible future roles in PD prevention and management are also considered.
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Affiliation(s)
- Olakunle J Onaolapo
- Behavioural Neuroscience Unit, Neuropharmacology Subdivision, Department of Pharmacology, Ladoke Akintola University of Technology, Osogbo, Osun State, Nigeria
| | - Ademola O Odeniyi
- Behavioural Neuroscience Unit, Neuropharmacology Subdivision, Department of Pharmacology, Ladoke Akintola University of Technology, Osogbo, Osun State, Nigeria
| | - Adejoke Y Onaolapo
- Behavioural Neuroscience Unit, Neurobiology Subdivision, Department of Anatomy, Ladoke Akintola University of Technology, Ogbomosho, Oyo State, Nigeria
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Ma Q, Chen Y, Zhang X, Cai S, Sun Y, Ma N, Yi J. Crateva unilocalaris Buch. shoots attenuate D-galactose-induced brain injury and cognitive disorders of mice through PI3K/Akt/Nrf2 pathway. Food Funct 2022; 13:3465-3480. [DOI: 10.1039/d1fo03452a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Crateva unilocalaris Buch. shoots are traditionally served as vegetable with many health-promoting benefits. The aim of the current investigation was designed to study the preventive effect of ethanol extract from...
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Tsai CL, Tsai CW, Chang WS, Lin JC, Hsia TC, Bau DAT. Protective Effects of Baicalin on Arsenic Trioxide-induced Oxidative Damage and Apoptosis in Human Umbilical Vein Endothelial Cells. In Vivo 2021; 35:155-162. [PMID: 33402461 DOI: 10.21873/invivo.12243] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 11/23/2020] [Accepted: 11/24/2020] [Indexed: 12/16/2022]
Abstract
BACKGROUND/AIM Arsenic trioxide (As2O3) is an environmental pollutant. However, the detailed mechanisms about As2O3-induced loss of endothelial integrity are unknown. This study aimed at investigating how As2O3 causes endothelial dysfunction and whether baicalin can reverse such dysfunction. MATERIALS AND METHODS Human umbilical vein endothelial cells (HUVECs) were used to examine As2O3-induced oxidative stress, and apoptosis. The influence of baicalin on As2O3-induced endothelial dysfunction were investigated. RESULTS The viability of HUVECs was inhibited by As2O3 and cells underwent apoptosis. As2O3 treatment increased NADPH oxidase activity, and elevated the level of reactive oxygen species (ROS). Formamidopyrimidine DNA-glycosylase- and endonuclease III-digestible adducts were accumulated. Baicalin reversed As2O3-induced apoptosis and As2O3-suppressed cell viability. Baicalin caused a decrease in NADPH oxidase activity, and re-balanced the ROS level. As2O3-induced formamidopyrimidine DNA-glycosylase- and endonuclease III-digestible adducts were down-regulated. CONCLUSION Baicalin was found to have the potential capacity to protect endothelial cells from As2O3-induced cytotoxicity.
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Affiliation(s)
- Chung-Lin Tsai
- Graduate Institute of Clinical Medical Science, China Medical University, Taichung, Taiwan, R.O.C.,Division of Cardiac and Vascular Surgery, Cardiovascular Center, Taichung Veterans General Hospital, Taichung, Taiwan, R.O.C
| | - Chia-Wen Tsai
- Terry Fox Cancer Research Laboratory, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan, R.O.C
| | - Wen-Shin Chang
- Terry Fox Cancer Research Laboratory, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan, R.O.C
| | - Jiunn-Cherng Lin
- Division of Cardiology, Department of Internal Medicine, Taichung Veterans General Hospital Chiayi Branch, Chiayi, Taiwan, R.O.C
| | - Te-Chun Hsia
- Terry Fox Cancer Research Laboratory, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan, R.O.C
| | - DA-Tian Bau
- Graduate Institute of Clinical Medical Science, China Medical University, Taichung, Taiwan, R.O.C.; .,Terry Fox Cancer Research Laboratory, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan, R.O.C.,Department of Bioinformatics and Medical Engineering, Asia University, Taichung, Taiwan, R.O.C
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Liu Y, Xiong M, Zhou F, Shi N, Jia Y. Effect of baicalin on gestational hypertension-induced vascular endothelial cell damage. J Int Med Res 2021; 48:300060520934288. [PMID: 33081553 PMCID: PMC7588769 DOI: 10.1177/0300060520934288] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Objective Baicalin is a compound extracted from the dried root of Scutellaria baicalensis Georgi. Studies have shown that baicalin has a protective effect on vascular endothelial cells, but whether baicalin could alleviate ascular endothelial cell damage in pregnancy-induced hypertensive patients remains unknown. Materials and methods We established a hypertensive pregnant rat model to study vascular endothelial injury during pregnancy-induced hypertension. Plasma epoprostenol (PGI-2), thromboxane A2 (Txa-2), β-human chorionic gonadotropin (β-HCG), and estrogen levels in rats were detected using ELISA. Vascular endothelial growth factor (VEGF), endothelial nitric oxide synthase (eNOS), and C-reactive protein (CRP) expression were detected using western blotting and quantitative PCR (q-PCR). Results Results showed that baicalin alleviated symptoms of pregnancy-induced hypertension. CRP, Txa-2, and β-HCG expression were significantly upregulated, while VEGF, eNOS, PGI-2, and estrogen expression was decreased in plasma and placental tissues of hypertensive rats. However, the levels of these injury indicators were significantly decreased after baicalin therapy, while the expression of protective indicators was significantly increased. Conclusion Baicalin reversed vascular endothelial cell injury in pregnant hypertensive rats by promoting VEGF, eNOS, PGI-2, and estrogen expression.
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Affiliation(s)
- Yang Liu
- Shanghai Sixth People's Hospital East Affiliated to Shanghai University of Medicine & Health Sciences, Shanghai, China
| | - Miao Xiong
- Shanghai Sixth People's Hospital East Affiliated to Shanghai University of Medicine & Health Sciences, Shanghai, China
| | - Fangfang Zhou
- Shanghai Sixth People's Hospital East Affiliated to Shanghai University of Medicine & Health Sciences, Shanghai, China
| | - Nana Shi
- Shanghai Sixth People's Hospital East Affiliated to Shanghai University of Medicine & Health Sciences, Shanghai, China
| | - Yunbin Jia
- Shanghai Sixth People's Hospital East Affiliated to Shanghai University of Medicine & Health Sciences, Shanghai, China
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Jong-Sik Ryu, Do J, Kang HY, Lee JK. The Protective Effects of Trans-Cinnamaldehyde against D-Galactose and Aluminum Chloride-Induced Cognitive Dysfunction in Mice. NEUROCHEM J+ 2021. [DOI: 10.1134/s1819712421010104] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Scutellaria baicalensis – a small plant with large pro-health biological activities. CURRENT ISSUES IN PHARMACY AND MEDICAL SCIENCES 2021. [DOI: 10.2478/cipms-2021-0010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Abstract
Scutellaria baicalensis, known also as Huang-Qin is a traditional Chinese plant used in medicine for at least 2000 years. The plant is widely distributed in Japan, Korea, Mongolia and Russia, and is listed in Chinese Pharmacopoeia, European Pharmacopoeia and British Pharmacopoeia. The interest in Huang-Qin results from various biological activities which are primarily related to secondary plants metabolites consisting of flavonoids, phenolic compounds and terpenes. It is known that the compounds are active against numerous diseases and protect the organism against harmful pathogenic agents. Particular attention is paid to baicalein, wogonin and oroxylin A – which are characteristic secondary metabolites of the plant. In this paper, we focused on phytochemical analysis and selected biological activities used in periodontal and cardiovascular problems. The presented studies confirm the ability of Huang-Qin to scavenge free radicals, moreover, that it presents anti-bacterial, anti-inflammatory and enzyme inhibitory activities.
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Koodalingam A, Rajalakshmi A, Parthiban E. Cytotoxicity and anti-inflammatory effects of polyherbal formulations, Joint Pain Spl and Rumalaya Forte on lipopolysaccharide induced inflammation in IC-21 macrophages. Antiinflamm Antiallergy Agents Med Chem 2021; 20:290-301. [PMID: 33397275 DOI: 10.2174/1871523019999210104203252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 11/25/2020] [Accepted: 12/03/2020] [Indexed: 11/22/2022]
Abstract
AIM To test the effectiveness of marketed polyherbal formulations on lipopolysaccharide induced inflammatory conditions in macrophages. BACKGROUND Usage of herbal compounds among patients suffered by arthritis and cancer is increasing every year. Many anti-inflammatory herbal products available in the market should be screened thoroughly for their possible mechanism of action. OBJECTIVE Joint Pain Spl (JPS) is a polyherbal dietary food supplement composed of 13 herbal plants and Rumalaya Forte (RF) is a polyherbal formulation comprising of 6 herbal plants were tested for its cytotoxicity, as well as antioxidant and anti-inflammatory activity in LPS treated IC-21 peritoneal macrophages. METHODS Commercially available JPS and RF powder was used to prepare the extract. The aqueous and methanol extracts were quantified for the presence of phenolic and flavonoid compound and confirmed with HPLC. In vitro DPPH free scavenging activity was performed. Cytotoxicity was tested by MTT assay. Anti-inflammatory activity was tested using lipopolysaccharide stimulated IC-21 peritoneal macrophage cells. RESULTS The phytochemical screening showed the presence of phenolic and flavonoid compounds in JPS and RF. The aqueous and methanol extracts of JPS and RF possesses significant DPPH free radical scavenging activity. MTT assay revealed that 90.64% (aqueous extract) and 92.21% (methanol extract) of exposed macrophages are viable even after 24h exposure of maximal tested concentrations of herbal formulations. Pre-treatment of JPS and RF on LPS induced IC-21 macrophages showed an reduction in nitric oxide production (maximal 79.95%) and high level of superoxide anion scavenging activity (maximal 82.5%) over control. CONCLUSION The two tested poly herbal formulations such as JPS and RF possesses anti-inflammatory activity by modulating free radical generation in IC-21 macrophages. Thus the presence of the phenolic and flavonoid compounds may contribute to the antioxidant activity.
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Affiliation(s)
- Arunagirinathan Koodalingam
- PG & Research Department of Zoology, Sir Theagaraya College, Old Washermenpet, Chennai - 600 021, Tamilnadu,. India
| | - Arumugam Rajalakshmi
- Department of Biotechnology, Sri Sankara Arts and Science College, Enathur, Kanchipuram- 631 561, Tamilnadu,. India
| | - Ezhumalai Parthiban
- Department of Zoology, University of Madras, Guindy Campus, Chennai - 600 025,. India
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Huang Q, Cheng C, Li L, Peng D, Zhang C. New Monitoring Strategy for the Quality Control in the Processing Practice of Scutellariae Radix. CURR PHARM ANAL 2020. [DOI: 10.2174/1573412915666190314121434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:Scutellariae Radix (Huangqin) is commonly processed into 3 products for different clinical applications. However, a simple analytical method for quality control has rarely been reported to quickly estimate the degree of processing Huangqin or distinguish differently processed products or unqualified Huangqin products.Objective:To study a new strategy for quality control in the processing practice of Huangqin.Methods:Seven kinds of flavonoids that mainly exist in Huangqin were determined by HPLC-DAD. Chromatographic fingerprints were established to study the variation and discipline of the 3 processed products of Huangqin. PCA and OPLS-DA were used to classify differently processed products of Huangqin.Results:The results showed that baicalin and wogonoside were the main components in the crude and the alcohol Huangqin herb while baicalein and wogonin mainly existed in carbonized Huangqin. The results of mathematical statistics revealed that the processing techniques can make the quality of medicinal materials more uniform.Conclusion:This multivariate monitoring strategy is suitable for quality control in the processing of Huangqin.
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Affiliation(s)
- Qi Huang
- College of Pharmacy, Anhui University of Chinese Medicine, Hefei 230001, China
| | - Chunsong Cheng
- Faculty of Chinese Medicine, Macau University of Science and Technology, Macau 999078, China
| | - Lili Li
- College of Pharmacy, Anhui University of Chinese Medicine, Hefei 230001, China
| | - Daiyin Peng
- College of Pharmacy, Anhui University of Chinese Medicine, Hefei 230001, China
| | - Cun Zhang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
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Song J, Zhou YZ, Pang YY, Gao L, Du GH, Qin XM. The anti-aging effect of Scutellaria baicalensis Georgi flowers extract by regulating the glutamine-glutamate metabolic pathway in d-galactose induced aging rats. Exp Gerontol 2020; 134:110843. [PMID: 32045633 DOI: 10.1016/j.exger.2020.110843] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 12/24/2019] [Accepted: 01/18/2020] [Indexed: 11/17/2022]
Abstract
Scutellaria baicalensis Georgi flowers is rich in flavonoids resources but not effectively exploited. This study aimed to investigate the anti-aging effects and potential mechanism of Scutellaria baicalensis Georgi flowers extract (SFE). The chemical components of the SFE were analyzed by UPLC-MS and the anti-aging effects of SFE were investigated in d-galactose (d-gal) induced aging rats by behavior examination and biochemical indexes, and the potential anti-aging mechanism of SFE were explored by 1H NMR-based liver metabolomics. Chemical composition research showed that 19 flavonoids were identified in SFE, and pharmacological research showed that SFE could significantly ameliorate spatial learning and memory ability. SFE could significantly regulate malondialdehyde (MDA), superoxide dismutase (SOD) and advanced glycation end products (AGEs). It also ameliorated the pathological abnormalities in liver. Additionally, anti-aging mechanism of SFE showed that total of 10 potential biomarkers were found by metabolomics techniques, which involved in 6 metabolic pathways. Among them, SFE could significantly increased the levels of d-glutamine and d-glutamate. Furthermore, the levels of glutamine and glutamate, and the levels of the key amino acids, enzymes and final product in the synthesis process of glutathione (GSH) were quantitatively determined in the liver by commercial kits and enzyme-linked immunosorbent assay. These results indicated that regulation of the glutamine-glutamate metabolic pathway is involved in the anti-aging effect of SFE in d-gal induced aging rats.
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Affiliation(s)
- Jia Song
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, Taiyuan 030006, PR China; College of Chemistry and Chemical Engineering of Shanxi University, Taiyuan 030006, PR China
| | - Yu-Zhi Zhou
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, Taiyuan 030006, PR China.
| | - Yi-Yuan Pang
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, Taiyuan 030006, PR China
| | - Li Gao
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, Taiyuan 030006, PR China
| | - Guan-Hua Du
- Institute of Materia Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100050, PR China
| | - Xue-Mei Qin
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, Taiyuan 030006, PR China
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Liau PR, Wu MS, Lee CK. Inhibitory Effects of Scutellaria baicalensis Root Extract on Linoleic Acid Hydroperoxide-induced Lung Mitochondrial Lipid Peroxidation and Antioxidant Activities. Molecules 2019; 24:molecules24112143. [PMID: 31174346 PMCID: PMC6600317 DOI: 10.3390/molecules24112143] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Revised: 06/03/2019] [Accepted: 06/05/2019] [Indexed: 02/07/2023] Open
Abstract
In this study, we evaluated the ability of Scutellaria baicalensis Georgi to protect lipid-peroxidation (LPO) in lung tissue after free radical-induced injury. We prepared S. baicalensis root (SBR) extracts using different solvents. The total flavonoid and total phenol contents of each extract were measured, and the ROS damage protection was evaluated by analyzing linoleic acid hydroperoxide (LHP)-induced LPO in rat lung mitochondria. Moreover, evaluating diphenylpicrylhydrazyl (DPPH), hydrogen peroxide, superoxide anion radical, and hydroxyl radical scavenging abilities and using metal chelating assays were used to determine in vitro antioxidant activity. The ethyl acetate (EtOAc) extract showed high ROS scavenging ability, and four compounds were subsequently isolated and purified from this extract: baicalin, baicalein, wogonin, and oroxylin A. Baicalein in rat lung mitochondria the most significant LHP-induced LPO inhibition was shown and extracted with EtOAc that contained the highest amount of baicalein. Thus, baicalein and the EtOAc extract of SBR may be efficient in conferring ROS damage protection and inhibiting LHP-induced LPO in rat lung mitochondria. Additional studies are warranted to investigate their use as antioxidant therapy for respiration infections, nutrition supplements, and lead compounds in pharmaceuticals.
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Affiliation(s)
- Pei Ru Liau
- School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei 11031, Taiwan.
| | - Ming Shun Wu
- Division of Gastroenterology, Department of Internal Medicine, Wan Fang Hospital, Taipei 11661, Taiwan.
- School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan.
| | - Ching Kuo Lee
- School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei 11031, Taiwan.
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Andrade S, Ramalho MJ, Loureiro JA, Pereira MDC. Natural Compounds for Alzheimer's Disease Therapy: A Systematic Review of Preclinical and Clinical Studies. Int J Mol Sci 2019; 20:E2313. [PMID: 31083327 PMCID: PMC6539304 DOI: 10.3390/ijms20092313] [Citation(s) in RCA: 123] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 05/04/2019] [Accepted: 05/07/2019] [Indexed: 12/31/2022] Open
Abstract
Alzheimer's Disease (AD) is a neurodegenerative disorder related with the increase of age and it is the main cause of dementia in the world. AD affects cognitive functions, such as memory, with an intensity that leads to several functional losses. The continuous increase of AD incidence demands for an urgent development of effective therapeutic strategies. Despite the extensive research on this disease, only a few drugs able to delay the progression of the disease are currently available. In the last years, several compounds with pharmacological activities isolated from plants, animals and microorganisms, revealed to have beneficial effects for the treatment of AD, targeting different pathological mechanisms. Thus, a wide range of natural compounds may play a relevant role in the prevention of AD and have proven to be efficient in different preclinical and clinical studies. This work aims to review the natural compounds that until this date were described as having significant benefits for this neurological disease, focusing on studies that present clinical trials.
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Affiliation(s)
- Stephanie Andrade
- LEPABE, Department of Chemical Engineering, Faculty of Engineering of the University of Porto, 4200-465 Porto, Portugal.
| | - Maria João Ramalho
- LEPABE, Department of Chemical Engineering, Faculty of Engineering of the University of Porto, 4200-465 Porto, Portugal.
| | - Joana Angélica Loureiro
- LEPABE, Department of Chemical Engineering, Faculty of Engineering of the University of Porto, 4200-465 Porto, Portugal.
| | - Maria do Carmo Pereira
- LEPABE, Department of Chemical Engineering, Faculty of Engineering of the University of Porto, 4200-465 Porto, Portugal.
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Choi EO, Hwang HJ, Choi YH. Induction of Apoptosis Scutellaria baicalensis Georgi Root Extract by Inactivation of the Phosphatidyl Inositol 3-kinase/Akt Signaling Pathway in Human Leukemia U937 Cells. J Cancer Prev 2019; 24:11-19. [PMID: 30993090 PMCID: PMC6453591 DOI: 10.15430/jcp.2019.24.1.11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 03/18/2019] [Accepted: 03/18/2019] [Indexed: 11/03/2022] Open
Abstract
Background The roots of Scutellaria baicalensis Georgi (Labiatae) have been widely used in traditional medicine for treatment of various diseases. In this study, we investigated the effects of ethanol extracts of S. baicalensis roots (EESB) on the growth ofn human leukemia U937 cells. Methods The effect of EESB on cell viability was measured by the 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide assay. Apoptosis was determined using 4,6-diamidino-2-phenyllindile staining and flow cytometry. The effects of EESB on the expression of regulatory proteins of apoptosis and phosphatidyl inositol 3-kinase (PI3K)/Akt signaling were determined by Western blotting. Caspase activity and mitochondrial membrane potential (MMP) were measured using flow cytometric analysis. Results EESB significantly inhibited the growth of U937 cells and induced apoptosis, which was associated with down-regulation of anti-apoptotic Bcl-2, up-regulation of pro-apoptotic Bax, the loss of MMP and activation of caspase-9 and -3. We also found that EESB enhanced the expression of death receptors (DRs) and their associated ligands and induced the activation of caspase-8 and truncation of Bid. In addition, EESB suppressed PI3K/Akt signaling and EESB-induced apoptosis and growth inhibition were further increased by inhibition of PI3K activity. Conclusions Our results indicated that the pro-apoptotic effect of EESB was mediated through the activation of DR-mediated intrinsic and mitochondria-mediated extrinsic apoptosis pathways and inhibition of the PI3K/Akt signaling in U937 cells.
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Affiliation(s)
- Eun Ok Choi
- Department of Biochemistry, Dong-Eui University College of Korean Medicine, Busan, Korea.,Anti-Aging Research Center, Dong-Eui University, Busan, Korea
| | - Hye-Jin Hwang
- Anti-Aging Research Center, Dong-Eui University, Busan, Korea.,Department of Food and Nutrition, College of Nursing, Healthcare Sciences & Human Ecology, Dong-Eui University, Busan, Korea
| | - Yung Hyun Choi
- Department of Biochemistry, Dong-Eui University College of Korean Medicine, Busan, Korea.,Anti-Aging Research Center, Dong-Eui University, Busan, Korea
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23
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Wang J, Zhang T, Liu X, Fan H, Wei C. Aqueous extracts of se-enriched Auricularia auricular attenuates D-galactose-induced cognitive deficits, oxidative stress and neuroinflammation via suppressing RAGE/MAPK/NF-κB pathway. Neurosci Lett 2019; 704:106-111. [PMID: 30953738 DOI: 10.1016/j.neulet.2019.04.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 03/21/2019] [Accepted: 04/02/2019] [Indexed: 01/28/2023]
Abstract
Aging is a natural process that accompanied with progressive cognitive deficits and functional decline in organisms. Selenium (Se), an essential trace element, exhibits antioxidative and anti-inflammatory abilities. Here, our study aimed to investigate the protective effects of aqueous extracts of Se-enriched Auricularia auricular (AESAA) on aging mice induced by d-galactose (D-gal) and explore its potential mechanism. d-gal was administered (100 mg/kg) subcutaneously for 12 weeks to establish an aging mouse model. Morris water maze (MWM) test was conducted to assess the cognitive deficits of mice. Superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), catalase (CAT) activities and malondialdehyde (MDA) level in hippocampus were measured to evaluate oxidative stress. The contents of pro-inflammatory cytokines tumor necrosis factor-alpha (TNF-α), interleukin-1 beta (IL-1β) and interleukin-6 (IL-6) in hippocampus were determined by ELISA method. Further, hippocampal levels of RAGE, p-Erk, p-JNK, p-P38 and p-NF-κB were detected by western blot and the RAGE expression was confirmed by immunohistochemistry. We found that AESAA supplementation significantly decreased d-gal-induced cognitive deficits, as evidenced by better performance in the MWM test. Furthermore, AESAA treatment attenuated oxidative stress and decreased the contents of pro-inflammatory cytokines in hippocampus. Importantly, AESAA inhibited the up-regulation of RAGE, p-Erk, p-JNK, p-P38 in the hippocampus of d-gal treated mice. Moreover, the results also indicated that AESAA inhibited p-NF-κB and p-IκBα expression. In conclusion, our findings suggest that AESAA effectively decreases cognitive impairment, alleviates oxidative damage and neuroinflammation in mice through s RAGE/MAPK/NF-κB signaling pathway, which provides a potential therapy for delaying the aging process.
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Affiliation(s)
- Jingjing Wang
- Institute of Agricultural Quality Standards and Testing Technology, Jilin Academy of Agricultural Sciences, Changchun, 130033, China
| | - Tianzhu Zhang
- Changchun University of Chinese Medicine, Changchun, 130117, China
| | - Xiaoxiao Liu
- Institute of Agricultural Quality Standards and Testing Technology, Jilin Academy of Agricultural Sciences, Changchun, 130033, China
| | - Huimei Fan
- Institute of Agricultural Quality Standards and Testing Technology, Jilin Academy of Agricultural Sciences, Changchun, 130033, China
| | - Chunyan Wei
- Institute of Agricultural Quality Standards and Testing Technology, Jilin Academy of Agricultural Sciences, Changchun, 130033, China.
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24
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Yu L, Wu AG, Wong VKW, Qu LQ, Zhang N, Qin DL, Zeng W, Tang B, Wang HM, Wang Q, Law BYK. The New Application of UHPLC-DAD-TOF/MS in Identification of Inhibitors on β-Amyloid Fibrillation From Scutellaria baicalensis. Front Pharmacol 2019; 10:194. [PMID: 30936829 PMCID: PMC6431657 DOI: 10.3389/fphar.2019.00194] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Accepted: 02/14/2019] [Indexed: 11/13/2022] Open
Abstract
Literary evidence depicts that aggregated β-amyloid (Aβ) leads to the pathogenesis of Alzheimer's disease (AD). Although many traditional Chinese medicines (TCMs) are effective in treating neurodegenerative diseases, there is no effective way for identifying active compounds from their complicated chemical compositions. Instead of using a traditional herbal separation method with low efficiency, we herein apply UHPLC-DAD-TOF/MS for the accurate identification of the active compounds that inhibit the fibrillation of Aβ (1-42), via an evaluation of the peak area of individual chemical components in chromatogram, after incubation with an Aβ peptide. Using the neuroprotective herbal plant Scutellaria baicalensis (SB) as a study model, the inhibitory effect on Aβ by its individual compounds, were validated using the thioflavin-T (ThT) fluorescence assay, biolayer interferometry analysis, dot immunoblotting and native gel electrophoresis after UHPLC-DAD-TOF/MS analysis. The viability of cells after Aβ (1-42) incubation was further evaluated using both the tetrazolium dye (MTT) assay and flow cytometry analysis. Thirteen major chemical components in SB were identified by UHPLC-DAD-TOF/MS after incubation with Aβ (1-42). The peak areas of two components from SB, baicalein and baicalin, were significantly reduced after incubation with Aβ (1-42), compared to compounds alone, without incubation with Aβ (1-42). Consistently, both compounds inhibited the formation of Aβ (1-42) fibrils and increased the viability of cells after Aβ (1-42) incubation. Based on the hypothesis that active chemical components have to possess binding affinity to Aβ (1-42) to inhibit its fibrillation, a new application using UHPLC-DAD-TOF/MS for accurate identification of inhibitors from herbal plants on Aβ (1-42) fibrillation was developed.
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Affiliation(s)
- Lu Yu
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macau.,Laboratory of Medical Chemistry, Department of Chemistry, School of Basic Medical Sciences, Southwest Medical University, Luzhou, China.,Sino-Portugal Traditional Chinese Medicine International Cooperation Center, Southwest Medical University, Luzhou, China
| | - An-Guo Wu
- Sichuan Key Laboratory of New Drug Discovery and Drugability Evaluation, Southwest Medical University, Luzhou, China.,Luzhou Key Laboratory of Bioactivity Screening in Traditional Chinese Medicine and Drugability Evaluation, Southwest Medical University, Luzhou, China
| | - Vincent Kam-Wai Wong
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macau
| | - Li-Qun Qu
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macau
| | - Ni Zhang
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macau
| | - Da-Lian Qin
- Sichuan Key Laboratory of New Drug Discovery and Drugability Evaluation, Southwest Medical University, Luzhou, China.,Luzhou Key Laboratory of Bioactivity Screening in Traditional Chinese Medicine and Drugability Evaluation, Southwest Medical University, Luzhou, China
| | - Wu Zeng
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macau
| | - Bin Tang
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macau
| | - Hui-Miao Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macau
| | - Qiong Wang
- Sino-Portugal Traditional Chinese Medicine International Cooperation Center, Southwest Medical University, Luzhou, China.,Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, China.,School of Pharmacy, Southwest Medical University, Luzhou, China
| | - Betty Yuen-Kwan Law
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macau
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25
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Zhao F, Chang Y, Gao L, Qin X, Du G, Zhang X, Zhou Y. Protective effects of Scutellaria baicalensis Georgi extract on D-galactose induced aging rats. Metab Brain Dis 2018; 33:1401-1412. [PMID: 29855978 DOI: 10.1007/s11011-018-0229-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Accepted: 04/06/2018] [Indexed: 10/14/2022]
Abstract
Scutellaria baicalensis Georgi (SBG), a traditional Chinese herb, has attracted considerable attention for its wide range of pharmacological activities. This study aimed to investigate the intervention effects of SBG ethanol extract on aging rats induced by D-galactose (D-gal) and to explore potential mechanisms by serum and liver metabolic profiles. The aging rats were induced by the D-gal (100 mg/kg) for 10 weeks continuously with subcutaneous injection, while the control rats received physiological saline. Two other groups of rats were administered with 100 mg/kg/day and 200 mg/kg/day of SBG by oral route following D-gal injections. The abilities of spatial and learning memory were evaluated by open-field test and Morris water maze test. Then, some biochemical indexes related to cognitive ability and aging were measured. Histopathological feature in hippocampal region was observed by Hematoxylin and eosin (HE) staining. The changes of metabolic profiles were evaluated using proton nuclear magnetic resonance (1H NMR) spectroscopy coupled with multivariate data analysis. Results showed that SBG could significantly improve the learning and memory functions, reducing oxidative damage and histological abnormalities of hippocampus neurons. In addition, significant differences in the metabolic profiles were observed both in serum and liver between the model group and the control group. After the treatment using SBG, the levels of these metabolites are significantly changed back to their similar levels in the control group. These metabolic changes are related to the disturbance in amino acid metabolism, glycometabolism and choline metabolism. Hence, SBG may have the potential to improve neurodegeneration and provide brain protection. Graphical abstract A 1H NMR-based metabonomic study was conducted to provide a global view of metabolites related to D-gal induced aging rats and assess the holistic efficacy of Scutellaria baicalensis Georgi.
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Affiliation(s)
- Fanfan Zhao
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, No.92, Wucheng Road, Taiyuan, China
- College of Chemistry and Chemical Engineering, Shanxi University, No.92, Wucheng Road, Taiyuan, China
| | - Yanfen Chang
- Maternity and Child Care Hospital, Shanxi Provincial Children Hospital, Taiyuan, China
| | - Li Gao
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, No.92, Wucheng Road, Taiyuan, China
| | - Xuemei Qin
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, No.92, Wucheng Road, Taiyuan, China
| | - Guanhua Du
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, No.92, Wucheng Road, Taiyuan, China
- Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Xiang Zhang
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, No.92, Wucheng Road, Taiyuan, China
- Department of Chemistry, University of Louisville, Louisville, KY, USA
| | - Yuzhi Zhou
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, No.92, Wucheng Road, Taiyuan, China.
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26
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Gao L, Li J, Zhou Y, Huang X, Qin X, Du G. Effects of Baicalein on Cortical Proinflammatory Cytokines and the Intestinal Microbiome in Senescence Accelerated Mouse Prone 8. ACS Chem Neurosci 2018; 9:1714-1724. [PMID: 29668250 DOI: 10.1021/acschemneuro.8b00074] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Baicalein, a flavonoid derived from the roots of Scutellariae baicalensis Georgi, has shown health benefits for an array of human diseases including dementia. The senescence-accelerated mouse prone 8 (SAMP8) strain is extensively used as a senile dementia model. To further investigate the effects of baicalein in SAMP8 mice, behavioral testing, biochemical detection, and gut microbiota analysis were performed. The results demonstrated that treatment with baicalein ameliorated the senescence status of the SAMP8 mice, as manifested by reducing the grading score of senescence. Additionally, baicalein improved the cognitive functions of the SAMP8 mice, including spatial learning and memory abilities, object recognition memory, and olfactory memory. Furthermore, baicalein significantly inhibited the release of proinflammatory cytokines such as interleukin-6 (IL-6), interleukin-1 beta (IL-1β), and tumor necrosis factor-α (TNF-α) in the brain cortex of SAMP8 mice. Gut microbiota analysis revealed that treatment with baicalein markedly altered the abundance of six genera in SAMP8 mice. Correlation analysis indicated that the abundances of Mucispirillum, Bacteroides, and Sutterella were negatively correlated with cognitive abilities and that Christensenellaceae was positively correlated with cognition. Furthermore, the abundance of Christensenellaceae was negatively correlated with the levels of IL-6 and TNF-α, while [ Prevotella] was positively correlated with the levels of IL-1β and IL-6. In addition, Mucispirillum and Bacteroides were positively correlated with the level of IL-6 in the brain cortex. These data indicated that baicalein ameliorates senescence status and improves cognitive function in SAMP8 mice and that this effect might be attributable to suppression of cortical proinflammatory cytokines and modulation of the intestinal microbiome.
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Affiliation(s)
- Li Gao
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, Taiyuan 030006, PR China
| | - Jiaqi Li
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, Taiyuan 030006, PR China
- College of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, PR China
| | - Yuzhi Zhou
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, Taiyuan 030006, PR China
| | - Xudong Huang
- Neurochemistry Laboratory, Department of Psychiatry, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts 02114, United States
| | - Xuemei Qin
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, Taiyuan 030006, PR China
| | - Guanhua Du
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, Taiyuan 030006, PR China
- Institute of Materia Medica, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing 100050, PR China
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27
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Wang T, Wu Z, Sun L, Li W, Liu G, Tang Y. A Computational Systems Pharmacology Approach to Investigate Molecular Mechanisms of Herbal Formula Tian-Ma-Gou-Teng-Yin for Treatment of Alzheimer's Disease. Front Pharmacol 2018; 9:668. [PMID: 29997503 PMCID: PMC6028720 DOI: 10.3389/fphar.2018.00668] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2018] [Accepted: 06/04/2018] [Indexed: 12/19/2022] Open
Abstract
Traditional Chinese medicine (TCM) is typically prescribed as formula to treat certain symptoms. A TCM formula contains hundreds of chemical components, which makes it complicated to elucidate the molecular mechanisms of TCM. Here, we proposed a computational systems pharmacology approach consisting of network link prediction, statistical analysis, and bioinformatics tools to investigate the molecular mechanisms of TCM formulae. Taking formula Tian-Ma-Gou-Teng-Yin as an example, which shows pharmacological effects on Alzheimer’s disease (AD) and its mechanism is unclear, we first identified 494 formula components together with corresponding 178 known targets, and then predicted 364 potential targets for these components with our balanced substructure-drug–target network-based inference method. With Fisher’s exact test and statistical analysis we identified 12 compounds to be most significantly related to AD. The target genes of these compounds were further enriched onto pathways involved in AD, such as neuroactive ligand–receptor interaction, serotonergic synapse, inflammatory mediator regulation of transient receptor potential channel and calcium signaling pathway. By regulating key target genes, such as ACHE, HTR2A, NOS2, and TRPA1, the formula could have neuroprotective and anti-neuroinflammatory effects against the progression of AD. Our approach provided a holistic perspective to study the relevance between TCM formulae and diseases, and implied possible pharmacological effects of TCM components.
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Affiliation(s)
- Tianduanyi Wang
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, China
| | - Zengrui Wu
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, China
| | - Lixia Sun
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, China
| | - Weihua Li
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, China
| | - Guixia Liu
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, China
| | - Yun Tang
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, China
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28
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Neuroprotective effects of Tualang honey against oxidative stress and memory decline in young and aged rats exposed to noise stress. JOURNAL OF TAIBAH UNIVERSITY FOR SCIENCE 2018. [DOI: 10.1080/16583655.2018.1465275] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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29
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Abstract
Alzheimer's disease and Parkinson's disease are the two most common, progressive central neurodegenerative diseases affecting the population over the age of 60 years. Apart from treatments that temporarily improve symptoms, there is no medicine currently available to inhibit or reverse the progression of Alzheimer's disease and Parkinson's disease. In traditional Chinese medicine, the root of Scutellaria baicalensis Georgi is a classic compatible component in the decoction of herbal medicine used for treating central nervous system diseases. Modern pharmacokinetic studies have confirmed that baicalein (5,6,7-trihydroxyflavone) is a major bioactive flavone constituent root of S. baicalensis Georgi. Studies showed that baicalein possesses a range of key pharmacological properties, such as reducing oxidative stress, anti-inflammatory properties, inhibiting aggregation of disease-specific amyloid proteins, inhibiting excitotoxicity, stimulating neurogenesis and differentiation action, and anti-apoptosis effects. Based on these properties, baicalein shows therapeutic potential for Alzheimer's disease and Parkinson's disease. In this review, we summarize the pharmacological protective actions of baicalein that make it suitable for the treatment of Alzheimer's disease and Parkinson's disease, and discuss the potential mechanisms underlying the effects.
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Affiliation(s)
- Yanwei Li
- Department of Human Anatomy, Medical College, Shaoyang University, Xueyuan Road Qiliping Campus, Shaoyang, 422000, Hunan, People's Republic of China.
| | - Jinying Zhao
- Department of Human Anatomy, Medical College, Shaoyang University, Xueyuan Road Qiliping Campus, Shaoyang, 422000, Hunan, People's Republic of China
| | - Christian Hölscher
- Biomedical and Life Science, Faculty of Health and Medicine, Lancaster University, Lancaster, LA1 4YQ, UK
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30
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Liu RX, Song GH, Wu PG, Zhang XW, Hu HJ, Liu J, Miao XS, Hou ZY, Wang WQ, Wei SL. Distribution patterns of the contents of five biologically activate ingredients in the root of Scutellaria baicalensis. Chin J Nat Med 2017; 15:152-160. [PMID: 28284428 DOI: 10.1016/s1875-5364(17)30030-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Indexed: 11/30/2022]
Abstract
As an important herbaceous plant, Scutellaria baicalensis Georgi (Chinese skullcap) is geographically widespread and commonly used throughout the world. In the Chinese medicine market, S. baicalensis has been divided into two primary types, "Ku Qin" (WXR) and "Tiao Qin" (TST). Moreover, TST is also divided into different grades according to the diameter of roots. To explore the distribution patterns of the contents of five biologically activate ingredients (FBAI), we used six-year-old cultivated S. baicalensis and analyzed its growth characteristics as well as the quality difference among different types and diameters in roots. Throughout the entire root, we discovered that contents of the FBAI all initially increased and subsequently decreased from the top to the bottom of the roots. The baicalin content of WXR was less than that of TST. On the contrary, the contents of baicalein, wogonin, and oroxylin A in WXR were up to about two times higher than that in TST. We also found that the 0 to 40 cm part of the S. baicalensis root possessed about 87% of the root biomass and about 92% of the contents of the active ingredients.
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Affiliation(s)
- Rong-Xiu Liu
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 100102, China
| | - Guo-Hu Song
- Chengde Pharmaceutical Co., Ltd Affiliated to China National Group Corp. of Traditional & Herbal Medicine, Chengde 067000, China
| | - Pei-Gen Wu
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 100102, China
| | - Xue-Wen Zhang
- Chengde Pharmaceutical Co., Ltd Affiliated to China National Group Corp. of Traditional & Herbal Medicine, Chengde 067000, China
| | - Hui-Juan Hu
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 100102, China
| | - Jia Liu
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 100102, China
| | - Xiao-Su Miao
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 100102, China
| | - Zhi-Yan Hou
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 100102, China
| | - Wen-Quan Wang
- National Engineering Laboratory for Breeding of Endangered Medicinal Materials, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100094, China.
| | - Sheng-Li Wei
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 100102, China.
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31
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Kure C, Timmer J, Stough C. The Immunomodulatory Effects of Plant Extracts and Plant Secondary Metabolites on Chronic Neuroinflammation and Cognitive Aging: A Mechanistic and Empirical Review. Front Pharmacol 2017; 8:117. [PMID: 28344556 PMCID: PMC5344987 DOI: 10.3389/fphar.2017.00117] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Accepted: 02/24/2017] [Indexed: 01/25/2023] Open
Abstract
Advances in healthcare have considerably improved the life expectancy of the human population over the last century and this has brought about new challenges. As we live longer the capacity for cognitive aging increases. Consequently, it has been noted that decline in cognitive performance in the elderly in domains of reasoning, problem solving skills, attention, processing speed, working memory and episodic memory is a significant societal problem. Despite the enormity of this issue there are relatively few interventions for cognitive aging. This may be due to our current state of knowledge on biological factors that underpin cognitive aging. One of the biological contributors to cognitive aging is chronic neuroinflammation. This review will provide an overview of the peripheral and central mechanisms involved in chronic neuroinflammation and how neuroinflammation may be related to age-associated cognitive decline. Plant based extracts including herbal and nutritional supplements with anti-inflammatory properties will be examined in relation to their utility in treating age-related cognitive decline. Plant based extracts in particular offer interesting pharmacological properties that may be quickly utilized to prevent cognitive aging.
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Affiliation(s)
| | | | - Con Stough
- Swinburne Centre for Human Psychopharmacology, Swinburne UniversityHawthorn, VIC, Australia
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32
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Lim HS, Kim OS, Kim BY, Jeong SJ. Apigetrin from Scutellaria baicalensis Georgi Inhibits Neuroinflammation in BV-2 Microglia and Exerts Neuroprotective Effect in HT22 Hippocampal Cells. J Med Food 2016; 19:1032-1040. [DOI: 10.1089/jmf.2016.0074] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Affiliation(s)
- Hye-Sun Lim
- Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Daejeon, Korea
| | - Ohn-Soon Kim
- Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Daejeon, Korea
| | - Bu-Yeo Kim
- Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Daejeon, Korea
| | - Soo-Jin Jeong
- Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Daejeon, Korea
- Korean Medicine Life Science, University of Science and Technology, Daejeon, Korea
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33
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Gao L, Duan DD, Zhang JQ, Zhou YZ, Qin XM, Du GH. A Bioinformatic Approach for the Discovery of Antiaging Effects of Baicalein from Scutellaria baicalensis Georgi. Rejuvenation Res 2016; 19:414-422. [DOI: 10.1089/rej.2015.1760] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Affiliation(s)
- Li Gao
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, Taiyuan, P.R. China
| | - Dan-dan Duan
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, Taiyuan, P.R. China
- College of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, P.R. China
| | - Jian-qin Zhang
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, Taiyuan, P.R. China
| | - Yu-zhi Zhou
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, Taiyuan, P.R. China
| | - Xue-mei Qin
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, Taiyuan, P.R. China
| | - Guan-hua Du
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, Taiyuan, P.R. China
- Institute of Materia Medica, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, P.R. China
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34
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Seo JY, Ju SH, Oh J, Lee SK, Kim JS. Neuroprotective and Cognition-Enhancing Effects of Compound K Isolated from Red Ginseng. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:2855-2864. [PMID: 27012214 DOI: 10.1021/acs.jafc.5b05789] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The present study was aimed at elucidating the effect of compound K derived from red ginseng on memory function in mouse model and glutamate-induced cytotoxicity in mouse hippocampal HT22 cells. Compound K induced antioxidant enzymes in nuclear factor (erythroid-derived 2)-like 2 (Nrf2)-mediated manner, and effectively attenuated cytotoxicity and mitochondrial damage induced by glutamate in HT22 cells. However, the cytoprotective effect by compound K was abolished by heme oxygenase-1 inhibitor, tin protophorphyrin IX, suggesting that neuroprotective effect of compound K was caused by its Nrf2-mediated induction of antioxidant enzymes. Further, memory deficit induced by scopolamine was restored by compound K, which did not inhibit acetylcholine esterase, in C57BL/6 mice but not in Nrf2 knockout mice as assessed by passive avoidance test, Y-maze and water maze tests, suggesting that scopolamine-induced memory impairment was overcome by the induction of Nrf2-mediated antioxidant enzymes by the compound K. Overall, our data indicate that compound K could be useful in prevention and treatment of reactive oxygen species-induced neurological disorders such as Alzheimer's disease.
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Affiliation(s)
- Ji Yeon Seo
- School of Food Science and Biotechnology (BK21 plus), Kyungpook National University , Daegu 41566, Republic of Korea
| | - Sung Hee Ju
- School of Food Science and Biotechnology (BK21 plus), Kyungpook National University , Daegu 41566, Republic of Korea
| | - Jisun Oh
- School of Food Science and Biotechnology (BK21 plus), Kyungpook National University , Daegu 41566, Republic of Korea
| | - Seung Kwon Lee
- Ginseng Research Team, Overseas Business Division, Ilhwa Company, Ltd. , Guri, Gyeonggi-do 11933, Republic of Korea
| | - Jong-Sang Kim
- School of Food Science and Biotechnology (BK21 plus), Kyungpook National University , Daegu 41566, Republic of Korea
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Caffeine prevents d-galactose-induced cognitive deficits, oxidative stress, neuroinflammation and neurodegeneration in the adult rat brain. Neurochem Int 2015. [DOI: 10.1016/j.neuint.2015.07.001] [Citation(s) in RCA: 115] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Herbs to curb cyclic nucleotide phosphodiesterase and their potential role in Alzheimer's disease. Mech Ageing Dev 2015; 149:75-87. [PMID: 26050556 DOI: 10.1016/j.mad.2015.05.009] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2014] [Revised: 04/22/2015] [Accepted: 05/27/2015] [Indexed: 01/02/2023]
Abstract
Cyclic nucleotides viz., cAMP/cGMP has been well known to play important role in cellular function and deficiency in their levels has been implicated in the pathogenesis of various neurodegenerative disorders including Alzheimer's disease (AD). Phosphodiesterases (PDE) are the enzymes involved in the metabolism of cyclic nucleotides and the inhibition of phosphodiesterases is considered to be viable strategy to restore the level of cyclic nucleotides and their functions in the brain. Various synthetic PDE inhibitors had been used clinically for various disorders and also suggested to be useful candidates for treating neurological disorders. However, side effects of these synthetic PDE inhibitors have limited their use in clinical practice. Natural plant extracts or their bio-active compounds are considered to be safe and are widely acceptable. During the last decade, many plant extracts or their bio-active compounds were tested pre-clinically for PDE inhibitory activity and are reported to be equally potent in inhibiting PDE's, as that of synthetic compounds. The present review is aimed to discuss the potential plant extract/compounds with PDE inhibitory activity and critically discuss their potential role in Alzheimer's disease.
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Effect of treatment with baicalein on the intracerebral tumor growth and survival of orthotopic glioma models. J Neurooncol 2015; 124:5-11. [PMID: 25968345 DOI: 10.1007/s11060-015-1804-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Accepted: 05/05/2015] [Indexed: 12/18/2022]
Abstract
Baicalein, a widely used Chinese herbal medicine, has been proved as a promising chemopreventive compound for many cancers. The aim of this work was to assess the anti-tumor effect of baicalein in the orthotopic glioma models. It was found that treatment of mice with U87 gliomas with baicalein (20 and 40 mg/kg/day, i.p.) significantly inhibited the intracerebral tumor growth and prolonged the survival. Furthermore, treatment with baicalein suppressed cell proliferation, promoted apoptosis, and arrested cell cycle in U87 gliomas. In addition, treatment with baicalein reduced tumor permeability, attenuated edema of tumors and brains, and improved tight junctions in gliomas. Finally, treatment with baicalein reduced the expression of HIF-1α, VEGF, and VEGFR2 in U87 gliomas. In addition, treatment with baicalein also markedly suppressed tumor growth and prolonged the survival of rats with 9L gliomas. In conclusion, baicalein has an obvious anti-tumor activity in the orthotopic glioma models. Our results suggested that treatment with baicalein might be an effective therapy for recurrent malignant brain cancers through suppressing tumor growth and alleviating edema.
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Yu XD, Zheng RB, Xie JH, Su JY, Huang XQ, Wang YH, Zheng YF, Mo ZZ, Wu XL, Wu DW, Liang YE, Zeng HF, Su ZR, Huang P. Biological evaluation and molecular docking of baicalin and scutellarin as Helicobacter pylori urease inhibitors. JOURNAL OF ETHNOPHARMACOLOGY 2015; 162:69-78. [PMID: 25557028 DOI: 10.1016/j.jep.2014.12.041] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2013] [Revised: 09/07/2014] [Accepted: 12/22/2014] [Indexed: 06/04/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Baicalin and scutellarin are the principal bioactive components of Scutellaria baicalensis Georgi which has extensively been incorporated into heat-clearing and detoxification formulas for the treatment of Helicobacter pylori-related gastrointestinal disorders in traditional Chinese medicine. However, the mechanism of action remained to be defined. AIM OF THE STUDY To explore the inhibitory effect, kinetics and mechanism of Helicobacter pylori urease (the vital pathogenetic factor for Helicobacter pylori infection) inhibition by baicalin and scutellarin, for their therapeutic potential. MATERIALS AND METHODS The ammonia formations, indicator of urease activity, were examined using modified spectrophotometric Berthelot (phenol-hypochlorite) method. The inhibitory effect of baicalin and scutellarin was characterized with IC50 values, compared to acetohydroxamic acid (AHA), a well known Helicobacter pylori urease inhibitor. Lineweaver-Burk and Dixon plots for the Helicobacter pylori urease inhibition of baicalin and scutellarin was constructed from the kinetic data. SH-blocking reagents and competitive active site Ni(2+) binding inhibitors were employed for mechanism study. Molecular docking technique was used to provide some information on binding conformations as well as confirm the inhibition mode. Moreover, cytotoxicity experiment using Gastric Epithelial Cells (GES-1) was evaluated. RESULTS Baicalin and scutellarin effectively suppressed Helicobacter pylori urease in dose-dependent and time-independent manner with IC50 of 0.82±0.07 mM and 0.47±0.04 mM, respectively, compared to AHA (IC50=0.14±0.05 mM). Structure-activity relationship disclosed 4'-hydroxyl gave flavones an advantage to binding with Helicobacter pylori urease. Kinetic analysis revealed that the types of inhibition were non-competitive and reversible with inhibition constant Ki of 0.14±0.01 mM and 0.18±0.02 mM for baicalin and scutellarin, respectively. The mechanism of urease inhibition was considered to be blockage of the SH groups of Helicobacter pylori urease, since thiol reagents (L,D-dithiothreitol, L-cysteine and glutathione) abolished the inhibitory action and competitive active site Ni(2+) binding inhibitors (boric acid and sodium fluoride) carried invalid effect. Molecular docking study further supported the structure-activity analysis and indicated that baicalin and scutellarin interacted with the key residues Cys321 located on the mobile flap through S-H·π interaction, but did not interact with active site Ni(2+). Moreover, Baicalin (at 0.59-1.05 mM concentrations) and scutellarin (at 0.23-0.71 mM concentrations) did not exhibit significant cytotoxicity to GES-1. CONCLUSIONS Baicalin and scutellarin were non-competitive inhibitors targeting sulfhydryl groups especially Cys321 around the active site of Helicobacter pylori urease, representing potential to be good candidate for future research as urease inhibitor for treatment of Helicobacter pylori infection. Furthermore, our work gave additional scientific support to the use of Scutellaria baicalensis in traditional Chinese medicine (TCM) to treat gastrointestinal disorders.
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Affiliation(s)
- Xiao-Dan Yu
- College of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, P.R. China
| | - Rong-Bo Zheng
- Guangzhou Wanglaoji Pharmaceutical Company Limited, Guangzhou, Guangdong 510450, P.R. China
| | - Jian-Hui Xie
- College of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, P.R. China; Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, The Second Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou 510120, P.R. China
| | - Ji-Yan Su
- College of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, P.R. China
| | - Xiao-Qi Huang
- The First Affiliated Hospital of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510405, P.R. China
| | - Yong-Hong Wang
- Guangdong Institute of Microbiology, Guangzhou 510006, P.R. China
| | - Yi-Feng Zheng
- College of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, P.R. China
| | - Zhi-Zhun Mo
- College of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, P.R. China
| | - Xiao-Li Wu
- College of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, P.R. China
| | - Dian-Wei Wu
- College of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, P.R. China
| | - Ye-er Liang
- College of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, P.R. China
| | - Hui-Fang Zeng
- The First Affiliated Hospital of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510405, P.R. China.
| | - Zi-Ren Su
- College of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, P.R. China; Dongguan Mathematical Engineering Academy of Chinese Medicine, Guangzhou, University of Chinese Medicine, Dongguan 523000, P.R. China
| | - Ping Huang
- College of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510006, P.R. China.
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Chen P, Zhou X, Zhang L, Shan M, Bao B, Cao Y, Kang A, Ding A. Anti-inflammatory effects of Huangqin tang extract in mice on ulcerative colitis. JOURNAL OF ETHNOPHARMACOLOGY 2015; 162:207-214. [PMID: 25576893 DOI: 10.1016/j.jep.2014.12.039] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Revised: 10/30/2014] [Accepted: 12/22/2014] [Indexed: 06/04/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE HuangqinTang (HQT) is a traditional Chinese formula which is composed of Scutellaria baicalensis Georgi, Paeonia lactiflora Pall, Glycyrrhiza uralensis Fisch, and Ziziphus jujube Mill. HQT has been used in China for a wide range of disorders, especially in gastrointestinal inflammation with symptoms of nausea, vomiting, diarrhea, abdominal cramps and so on. AIM OF THE STUDY To investigate the protective effects of HQT extract on 2, 4, 6-trinitrobenzenesulfonic acid (TNBS) induced colitis in mice. MATERIALS AND METHODS Different doses of HQT extract (1, 2 and 4 g/kg/day) and salicylazosulfapyridine (SASP, 500 mg/kg/day) were administered by gavage for 7 days after the induction of colitis with TNBS. The effects were studied by macroscopic score, histological analysis, immunohistochemical study of Cyclo-oxygenase-2 protein expression, as well as by determination of inflammation markers such as myeloperoxidase (MPO) and mRNA expression levels of pro-inflammatory cytokines, including TNF-α, IL-1β and IL-6. RESULTS In TNBS induced group, mice body weight decreased gradually and did not recover at the end of the experiment, as compared with that of control group (p<0.01). Edema and redness were also discovered in the colons profoundly and scores representing inflammation were all high in this group (p<0.01). The level of colonic MPO activity and the tissue levels of TNF-α, IL-1β and IL-6 were markedly increased (p<0.01). The mice treated with HQT extract and SASP recovered significantly compared with the TNBS group (p<0.01). CONCLUSION Our results suggested that the efficacy of HQT extract, especially at the higher dose, was analogous to that of SASP, which implicated its potential application as a natural alternative medicine in colitis treatment.
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Affiliation(s)
- Peidong Chen
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Xianlin Road 138♯, Nanjing 210046, China.
| | - Xi Zhou
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Xianlin Road 138♯, Nanjing 210046, China
| | - Li Zhang
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Xianlin Road 138♯, Nanjing 210046, China
| | - Mingqiu Shan
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Xianlin Road 138♯, Nanjing 210046, China
| | - Beihua Bao
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Xianlin Road 138♯, Nanjing 210046, China
| | - Yudan Cao
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Xianlin Road 138♯, Nanjing 210046, China
| | - An Kang
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Xianlin Road 138♯, Nanjing 210046, China
| | - Anwei Ding
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Xianlin Road 138♯, Nanjing 210046, China
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Zhu Y, Wang J. Wogonin increases β-amyloid clearance and inhibits tau phosphorylation via inhibition of mammalian target of rapamycin: potential drug to treat Alzheimer's disease. Neurol Sci 2015; 36:1181-8. [PMID: 25596147 DOI: 10.1007/s10072-015-2070-z] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Accepted: 01/08/2015] [Indexed: 11/25/2022]
Abstract
Alzheimer's disease (AD) is a progressive neurodegenerative disorder. Many molecular lesions have been detected in AD, of which the most commonly observed is the accumulation of misfolded proteins, including β-amyloid (Aβ40 and Aβ42) and tau, in the aging brain. The mammalian target of rapamycin (mTOR) pathway mediates Aβ clearance through autophagy and regulates tau phosphorylation via glycogen synthase kinase-3β (GSK3β). Thus, mTOR becomes an important therapeutic target for AD. However, no mTOR inhibitor has yet been marketed to treat AD. Here, we discovered a natural product, wogonin, which could potently promote Aβ clearance in the primary neural astrocytes and significantly decrease Aβ secretion in SH-SY5Y-APP and BACE1 cells [SH-SY5Y cells stably expressing the human amyloid precursor protein (APP) and β-secretase (BACE1)] through the mTOR/autophagy signaling pathway. Additionally, further research revealed that wogonin inhibited the activity of GSK3β via mTOR inhibition, finally leading to tau phosphorylation reduction in SH-SHY5Y cells and primary neural astrocytes. In conclusion, our study identified a small molecule, wogonin, which could effectively promote Aβ clearance and decrease tau phosphorylation, and highlighted its therapeutic potential for AD treatment.
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Affiliation(s)
- Yuyou Zhu
- Department of Neurology, Anhui Provincial Hospital Affiliated to Anhui Medical University, Hefei, 230001, China,
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Ginsenoside Rg1 prevents cognitive impairment and hippocampus senescence in a rat model of D-galactose-induced aging. PLoS One 2014; 9:e101291. [PMID: 24979747 PMCID: PMC4076296 DOI: 10.1371/journal.pone.0101291] [Citation(s) in RCA: 128] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Accepted: 06/05/2014] [Indexed: 12/02/2022] Open
Abstract
Neurogenesis continues throughout the lifetime in the hippocampus, while the rate declines with brain aging. It has been hypothesized that reduced neurogenesis may contribute to age-related cognitive impairment. Ginsenoside Rg1 is an active ingredient of Panax ginseng in traditional Chinese medicine, which exerts anti-oxidative and anti-aging effects. This study explores the neuroprotective effect of ginsenoside Rg1 on the hippocampus of the D-gal (D-galactose) induced aging rat model. Sub-acute aging was induced in male SD rats by subcutaneous injection of D-gal (120 mg/kg·d) for 42 days, and the rats were treated with ginsenoside Rg1 (20 mg/kg·d, intraperitoneally) or normal saline for 28 days after 14 days of D-gal injection. In another group, normal male SD rats were treated with ginsenoside Rg1 alone (20 mg/kg·d, intraperitoneally) for 28 days. It showed that administration of ginsenoside Rg1 significantly attenuated all the D-gal-induced changes in the hippocampus, including cognitive capacity, senescence-related markers and hippocampal neurogenesis, compared with the D-gal-treated rats. Further investigation showed that ginsenoside Rg1 protected NSCs/NPCs (neural stem cells/progenitor cells) shown by increased level of SOX-2 expression; reduced astrocytes activation shown by decrease level of Aeg-1 expression; increased the hippocampal cell proliferation; enhanced the activity of the antioxidant enzymes GSH-Px (glutathione peroxidase) and SOD (Superoxide Dismutase); decreased the levels of IL-1β, IL-6 and TNF-α, which are the proinflammatory cytokines; increased the telomere lengths and telomerase activity; and down-regulated the mRNA expression of cellular senescence associated genes p53, p21Cip1/Waf1 and p19Arf in the hippocampus of aged rats. Our data provides evidence that ginsenoside Rg1 can improve cognitive ability, protect NSCs/NPCs and promote neurogenesis by enhancing the antioxidant and anti-inflammatory capacity in the hippocampus.
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Peng Y, Guo CS, Li PX, Fu ZZ, Gao LM, Di Y, Ju YK, Tian R, Xue JJ. Immune and Anti-oxidant Functions of Ethanol Extracts of Scutellaria baicalensis Georgi in Mice Bearing U14 Cervical Cancers. Asian Pac J Cancer Prev 2014; 15:4129-33. [DOI: 10.7314/apjcp.2014.15.10.4129] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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NMDA receptor-mediated neuroprotective effect of the Scutellaria baicalensis Georgi extract on the excitotoxic neuronal cell death in primary rat cortical cell cultures. ScientificWorldJournal 2014; 2014:459549. [PMID: 24967436 PMCID: PMC4055394 DOI: 10.1155/2014/459549] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Accepted: 04/04/2014] [Indexed: 01/09/2023] Open
Abstract
The objective of the current research work was to evaluate the neuroprotective effect of the ethanol extract of Scutellaria baicalensis (S.B.) on the excitotoxic neuronal cell death in primary rat cortical cell cultures. The inhibitory effects of the extract were qualitatively and quantitatively estimated by phase-contrast microscopy and lactate dehydrogenase (LDH) assays. The extract exhibited a potent and dose-dependent inhibition of the glutamate-induced excitotoxicity in the culture media. Further, using radioligand binding assays, it was observed that the inhibitory effect of the extract was more potent and selective for the N-methyl-D-aspartate (NMDA) receptor-mediated toxicity. The S.B. ethanol extract competed with [3H] MDL 105,519 for the specific binding to the NMDA receptor glycine site with 50% inhibition occurring at 35.1 μg/mL. Further, NMDA receptor inactivation by the S.B. ethanol extract was concluded from the decreasing binding capability of [3H]MK-801 in the presence of the extract. Thus, S.B. extract exhibited neuroprotection against excitotoxic cell death, and this neuroprotection was mediated through the inhibition of NMDA receptor function by interacting with the glycine binding site of the NMDA receptor. Phytochemical analysis of the bioactive extract revealed the presence of six phytochemical constituents including baicalein, baicalin, wogonin, wogonoside, scutellarin, and Oroxylin A.
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Shin HS, Bae MJ, Jung SY, Shon DH. Preventive effects of skullcap (Scutellaria baicalensis) extract in a mouse model of food allergy. JOURNAL OF ETHNOPHARMACOLOGY 2014; 153:667-673. [PMID: 24637193 DOI: 10.1016/j.jep.2014.03.018] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2013] [Revised: 03/04/2014] [Accepted: 03/09/2014] [Indexed: 06/03/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Food allergy, which accompanies acute symptoms such as pruritus, vomiting, diarrhea, and lethal anaphylactic shock is an increasing clinical problem. Skullcap (Scutellaria baicalensis Georgi) has been widely used as a traditional herbal medicine to treat inflammation, cancer, and allergy, but its effects in treating food allergy are not yet known. MATERIALS AND METHODS To examine the effect of skullcap on food allergy, female BALB/c mice were sensitized with 20 μg OVA and 2mg alum by intraperitoneal injection on day 0. From day 17, mice were orally challenged with OVA (50 mg) in saline every 3 days, for a total of six times. To investigate the preventive effect, skullcap (25 mg/kg) was orally administered every day from day 17 to 34. RESULTS Food allergy symptoms were evaluated by the criteria for diarrhea, anaphylactic response, and rectal temperature. Severe symptoms of food allergy were observed in the sham group (diarrhea, 3 points; anaphylactic response, 2.6 points; rectal temperature, -8.36 °C. In contrast, the skullcap treatment group had a significantly suppressed OVA-induced anaphylactic response (1.3 points) and rectal temperature (-4.76°C). Moreover, both OVA-specific IgE, Th17 cytokine (IL-17), and Th2-related cytokines (IL-4, IL-5, IL-10, and IL-13), which increased with food allergy, were significantly inhibited by skullcap treatment. CONCLUSION We demonstrate that the administration of skullcap attenuates OVA-induced food allergy symptoms through regulating systemic immune responses of Th cells. These results indicate that skullcap may be a potential candidate as a preventive agent for food allergy.
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Affiliation(s)
- Hee Soon Shin
- Korea Food Research Institute, 1201-62, Anyangpangyo-ro, Bundang-gu, Seognam-si, Kyeonggi-do 463-746, Republic of Korea
| | - Min-Jung Bae
- Korea Food Research Institute, 1201-62, Anyangpangyo-ro, Bundang-gu, Seognam-si, Kyeonggi-do 463-746, Republic of Korea
| | - Sun Young Jung
- Korea Food Research Institute, 1201-62, Anyangpangyo-ro, Bundang-gu, Seognam-si, Kyeonggi-do 463-746, Republic of Korea
| | - Dong-Hwa Shon
- Korea Food Research Institute, 1201-62, Anyangpangyo-ro, Bundang-gu, Seognam-si, Kyeonggi-do 463-746, Republic of Korea.
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Nam SM, Choi JH, Yoo DY, Kim W, Jung HY, Kim JW, Yoo M, Lee S, Kim CJ, Yoon YS, Hwang IK. Effects of curcumin (Curcuma longa) on learning and spatial memory as well as cell proliferation and neuroblast differentiation in adult and aged mice by upregulating brain-derived neurotrophic factor and CREB signaling. J Med Food 2014; 17:641-9. [PMID: 24712702 DOI: 10.1089/jmf.2013.2965] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Aging is a progressive process, and it may lead to the initiation of neurological diseases. In this study, we investigated the effects of wild Indian Curcuma longa using a Morris water maze paradigm on learning and spatial memory in adult and D-galactose-induced aged mice. In addition, the effects on cell proliferation and neuroblast differentiation were assessed by immunohistochemistry for Ki67 and doublecortin (DCX) respectively. The aging model in mice was induced through the subcutaneous administration of D-galactose (100 mg/kg) for 10 weeks. C. longa (300 mg/kg) or its vehicle (physiological saline) was administered orally to adult and D-galactose-treated mice for the last three weeks before sacrifice. The administration of C. longa significantly shortened the escape latency in both adult and D-galactose-induced aged mice and significantly ameliorated D-galactose-induced reduction of cell proliferation and neuroblast differentiation in the subgranular zone of hippocampal dentate gyrus. In addition, the administration of C. longa significantly increased the levels of phosphorylated CREB and brain-derived neurotrophic factor in the subgranular zone of dentate gyrus. These results indicate that C. longa mitigates D-galactose-induced cognitive impairment, associated with decreased cell proliferation and neuroblast differentiation, by activating CREB signaling in the hippocampal dentate gyrus.
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Affiliation(s)
- Sung Min Nam
- 1 Department of Anatomy and Cell Biology, College of Veterinary Medicine, and Research Institute for Veterinary Science, Seoul National University , Seoul, South Korea
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Flavonoids Identified from Korean Scutellaria baicalensis Georgi Inhibit Inflammatory Signaling by Suppressing Activation of NF- κ B and MAPK in RAW 264.7 Cells. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2013; 2013:912031. [PMID: 24348728 PMCID: PMC3857833 DOI: 10.1155/2013/912031] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/12/2013] [Accepted: 10/04/2013] [Indexed: 12/28/2022]
Abstract
Scutellaria baicalensis Georgi has been used as traditional medicine for treating inflammatory diseases, hepatitis, tumors, and diarrhea in Asia. Hence, we investigated the anti-inflammatory effect and determined the molecular mechanism of action of flavonoids isolated from Korean S. baicalensis G. in lipopolysaccharide- (LPS-) stimulated RAW 264.7 macrophages. A 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay was performed to examine cytotoxicity of the flavonoids at various concentrations of 10, 40, 70, and 100 µg/mL. No cytotoxicity was observed in RAW 264.7 cells at these concentrations. Furthermore, the flavonoids decreased production of inflammatory mediators such as inducible nitric oxide synthase, cyclooxygenase-2, interleukin-6, and tumor necrosis factor-alpha and inhibited phosphorylation of nuclear factor-kappa B (NF-κB) and mitogen-activated protein kinases (MAPKs) in LPS-induced RAW 264.7 cells. Moreover, to identify the differentially expressed proteins in RAW 264.7 cells of the control, LPS-treated, and flavonoid-treated groups, two-dimensional gel electrophoresis and mass spectrometry were conducted. The identified proteins were involved in the inflammatory response and included PRKA anchor protein and heat shock protein 70 kD. These findings suggest that the flavonoids isolated from S. baicalensis G. might have anti-inflammatory effects that regulate the expression of inflammatory mediators by inhibiting the NF-κB signaling pathway via the MAPK signaling pathway in RAW 264.7 cells.
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Xu M, Chen X, Gu Y, Peng T, Yang D, Chang RCC, So KF, Liu K, Shen J. Baicalin can scavenge peroxynitrite and ameliorate endogenous peroxynitrite-mediated neurotoxicity in cerebral ischemia-reperfusion injury. JOURNAL OF ETHNOPHARMACOLOGY 2013; 150:116-124. [PMID: 23973788 DOI: 10.1016/j.jep.2013.08.020] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Revised: 07/25/2013] [Accepted: 08/06/2013] [Indexed: 06/02/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Baicalin is one of the principal flavonoids isolated from the dried root of Scutellaria baicalensis Georgi that has long been used to treat ischemic stroke. However, its neuroprotective mechanisms against cerebral ischemia injury are poorly understood. AIM OF THE STUDY To explore the neuroprotective mechanisms of baicalin against cerebral ischemia reperfusion injury. MATERIAL AND METHODS In chemical systems, we conducted electron paramagnetic resonance (EPR) spin trapping experiments to evaluate the scavenging effects of baicalin on superoxide and nitric oxide, and mass spectrometry (MS) studies on the reaction of baicalin and peroxynitrite. In cellular experiments, we investigated the effects of baicalin against extraneous and endogenous peroxynitrite mediated neurotoxicity in SH-SY5Y cells treated with peroxynitrite donor, synthesized peroxynitrite and exposed to oxygen glucose deprivation and reoxygenation (OGD/RO) in vitro. Moreover, we studied the neuroprotective effects of baicalin by using a rat model of middle cerebral artery occlusion in vivo. FeTMPyP, a peroxynitrite decomposition catalyst, was used as positive control. Cell viability and apoptotic cell death was accessed by MTT assay and TUNEL assay respectively; 3-nitrotyrosine formation and infarction volume were detected by immunostaining experiments and TTC staining respectively. RESULTS Baicalin revealed strong antioxidant ability by directly scavenging superoxide and reacting with peroxynitrite. Baicalin protected the neuronal cells from extraneous and endogenous peroxynitrite-induced neurotoxicity. In ischemia-reperfused brains, baicalin inhibited the formation of 3-nitrotyrosine, reduced infarct size and attenuated apoptotic cell death, whose effects were similar to FeTMPyP. CONCLUSIONS Baicalin can directly scavenge peroxynitrite and the peroxynitrite-scavenging ability contributes to its neuroprotective mechanisms against cerebral ischemia reperfusion injury.
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Affiliation(s)
- Mingjing Xu
- School of Chinese Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, 10 Sassoon Road, Hong Kong SAR, China; Research Centre of Heart, Brain, Hormone & Healthy Aging, The University of Hong Kong, 21 Sassoon Road, Hong Kong SAR, China.
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Advances in neuroprotective ingredients of medicinal herbs by using cellular and animal models of Parkinson's disease. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2013; 2013:957875. [PMID: 24073012 PMCID: PMC3774059 DOI: 10.1155/2013/957875] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/06/2013] [Revised: 07/25/2013] [Accepted: 07/26/2013] [Indexed: 12/30/2022]
Abstract
Parkinson's disease (PD) is a multifactorial disorder, which is neuropathologically identified by age-dependent neurodegeneration of dopaminergic neurons in the substantia nigra. Development of symptomatic treatments has been partly successful for PD research, but there remain a number of inadequacies in therapeutic strategies for the disease. The pathogenesis of PD remains intricate, and the present anti-PD treatments appears to be clinically insufficient. Comprehensive research on discovery of novel drug candidates has demonstrated that natural products, such as medicinal herbs, plant extracts, and their secondary metabolites, have great potential as therapeutics with neuroprotective activity in PD. Recent preclinical studies suggest that a number of herbal medicines and their bioactive ingredients can be developed into optimum pharmaceuticals for treating PD. In many countries, traditional herbal medicines are used to prevent or treat neurodegenerative disorders, and some have been developed as nutraceuticals or functional foods. Here we focus on recent advances of the evidence-linked neuroprotective activity of bioactive ingredients of herbal origin in cellular and animal models of PD research.
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Musthafa KS, Sahu SK, Ravi AV, Kathiresan K. Anti-quorum sensing potential of the mangrove Rhizophora annamalayana. World J Microbiol Biotechnol 2013; 29:1851-8. [PMID: 23591758 DOI: 10.1007/s11274-013-1347-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2012] [Accepted: 04/04/2013] [Indexed: 01/26/2023]
Abstract
The present study was carried out to assess the anti-quorum sensing (anti-QS) activity of bark extract obtained from the mangrove plant Rhizophora annamalayana Kathir. against Gram-negative bacteria. In microtitre plate assay, the bark extract at a concentration of 1 mg/ml inhibited the QS-dependent violacein production in Chromobacterium violaceum ATCC 12472. Further, the QS-dependent bioluminescence production in the aquatic bacterial pathogen Vibrio harveyi MTCC 3438 was also reduced to the level of 99 % when treated with the same concentration of the extract. Gas chromatography-mass spectrum analysis identified the presence of seven different chemical constituents, 1H-purin-6-amine, cycloheptasiloxane, cyclooctasiloxane, cyclononasiloxane, cyclononasiloxane octadecamethyl, cyclodecasiloxane eicosamethyl and 1,1,1,5,7,7,7-heptamethyl-3,3-bis(trimethylsiloxy)tetrasiloxane. The molecular docking analysis of the identified compounds revealed that the compounds cyclononasiloxane octadecamethyl and cyclodecasiloxane eicosamethyl exhibited the best docking energy with the QS receptors of C. violaceum and V. harveyi with that of the natural ligand N -hexanoyl- L -homoserine lactone (C6-HSL) and furanosyl borate diester (AI-2). Similarly, another compound 1,1,1,5,7,7,7-heptamethyl-3,3-bis(trimethylsiloxy)tetrasiloxane showed best docking energy only against C6-HSL. Thus, the results of the present study divulge the activity of R. annamalayana bark extract to interfere with bacterial QS.
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Affiliation(s)
- Khadar Syed Musthafa
- Centre of Advanced Study in Marine Biology, Annamalai University, Porto novo, 608 502, Tamil Nadu, India
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