1
|
Li S, Hou Z, Ye T, Song X, Hu X, Chen J. Saponin components in Polygala tenuifolia as potential candidate drugs for treating dementia. Front Pharmacol 2024; 15:1431894. [PMID: 39050746 PMCID: PMC11266144 DOI: 10.3389/fphar.2024.1431894] [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: 05/13/2024] [Accepted: 06/21/2024] [Indexed: 07/27/2024] Open
Abstract
Objective This study aims to elucidate the intervention effects of saponin components from Polygala tenuifolia Willd (Polygalaceae) on dementia, providing experimental evidence and new insights for the research and application of saponins in the field of dementia. Materials and Methods This review is based on a search of the PubMed, NCBI, and Google Scholar databases from their inception to 13 May 2024, using terms such as "P. tenuifolia," "P. tenuifolia and saponins," "toxicity," "dementia," "Alzheimer's disease," "Parkinson's disease dementia," and "vascular dementia." The article summarizes the saponin components of P. tenuifolia, including tenuigenin, tenuifolin, polygalasaponins XXXII, and onjisaponin B, as well as the pathophysiological mechanisms of dementia. Importantly, it highlights the potential mechanisms by which the active components of P. tenuifolia prevent and treat diseases and relevant clinical studies. Results The saponin components of P. tenuifolia can reduce β-amyloid accumulation, exhibit antioxidant effects, regulate neurotransmitters, improve synaptic function, possess anti-inflammatory properties, inhibit neuronal apoptosis, and modulate autophagy. Therefore, P. tenuifolia may play a role in the prevention and treatment of dementia. Conclusion The saponin components of P. tenuifolia have shown certain therapeutic effects on dementia. They can prevent and treat dementia through various mechanisms.
Collapse
Affiliation(s)
- Songzhe Li
- College of Basic Medicine, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Zhitao Hou
- College of Basic Medicine, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Ting Ye
- The Second Hospital Affiliated Heilongjiang University of Traditional Chinese Medicine, Harbin, China
| | - Xiaochen Song
- College of Basic Medicine, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Xinying Hu
- College of Basic Medicine, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Jing Chen
- College of Basic Medicine, Heilongjiang University of Chinese Medicine, Harbin, China
| |
Collapse
|
2
|
Mishra DK, Awasthi H, Srivastava D, Fatima Z. Phytochemical: a treatment option for heavy metal induced neurotoxicity. JOURNAL OF COMPLEMENTARY & INTEGRATIVE MEDICINE 2022; 19:513-530. [PMID: 35749142 DOI: 10.1515/jcim-2020-0325] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Accepted: 05/23/2022] [Indexed: 06/15/2023]
Abstract
Heavy metals are known to be carcinogenic, mutagenic, and teratogenic. Some heavy metals are necessary while present in the growing medium in moderate concentrations known to be essential heavy metals as they required for the body functioning as a nutrient. But there are some unwanted metals and are also toxic to the environment and create a harmful impact on the body, which termed to be non-essential heavy metals. Upon exposure, the heavy metals decrease the major antioxidants of cells and enzymes with the thiol group and affect cell division, proliferation, and apoptosis. It interacts with the DNA repair mechanism and initiates the production of reactive oxygen species (ROS). It subsequently binds to the mitochondria and may inhibit respiratory and oxidative phosphorylation in even low concentrations. This mechanism leads to damage antioxidant repair mechanism of neuronal cells and turns into neurotoxicity. Now, phytochemicals have led to good practices in the health system. Phytochemicals that are present in the fruits and herbs can preserve upon free radical damage. Thus, this review paper summarized various phytochemicals which can be utilized as a treatment option to reverse the effect of the toxicity caused by the ingestion of heavy metals in our body through various environmental or lifestyles ways.
Collapse
Affiliation(s)
| | - Himani Awasthi
- Amity Institute of Pharmacy, Amity University, Lucknow, India
| | | | - Zeeshan Fatima
- Amity Institute of Pharmacy, Amity University, Lucknow, India
| |
Collapse
|
3
|
Jiang N, Wei S, Zhang Y, He W, Pei H, Huang H, Wang Q, Liu X. Protective Effects and Mechanism of Radix Polygalae Against Neurological Diseases as Well as Effective Substance. Front Psychiatry 2021; 12:688703. [PMID: 34975553 PMCID: PMC8719339 DOI: 10.3389/fpsyt.2021.688703] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 09/27/2021] [Indexed: 11/13/2022] Open
Abstract
Radix Polygalae (also known as Yuanzhi in China) is the dried rhizome of Polygala tenuifolia Willd. or Polygala sibirica L., which is a famous Chinese herb and has been widely used for centuries in traditional medicines including expectorants, tonics, tranquilizers, antipsychotic, and so on. This article reviews the neuroprotective effects of Radix Polygalae in preclinical models of central nervous system (CNS) disorders, especially anxiety, depression, declining cognition, Alzheimer's disease (AD), and Parkinson's disease (PD). The chemical composition of Radix Polygalae as well as the underlying mechanisms of action were also reviewed. We found that Radix Polygalae possesses a broad range of beneficial effects on the abovementioned conditions. The multifold mechanisms of action include several properties such as antioxidant and associated apoptotic effects; anti-inflammatory and associated apoptotic effects; neurogenesis, regeneration, differentiation, and neuronal plasticity improvement; hypothalamic-pituitary-adrenal axis (HPA) regulation; neurotransmitter release; and receptor activation (A2AR, NMDA-R, and GluR). Nevertheless, the detailed mechanisms underlying this array of pharmacological effects observed in vitro and in vivo still need further investigation to attain a coherent neuroprotective profile.
Collapse
Affiliation(s)
- Ning Jiang
- Sino-Portugal TCM International Cooperation Center, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China.,Research Center for Pharmacology and Toxicology, Institute of Medicinal Plant Development (IMPLAD), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Shanshan Wei
- Sino-Portugal TCM International Cooperation Center, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
| | - Yiwen Zhang
- Research Center for Pharmacology and Toxicology, Institute of Medicinal Plant Development (IMPLAD), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Wenlu He
- Sino-Portugal TCM International Cooperation Center, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
| | - Haiyue Pei
- Research Center for Pharmacology and Toxicology, Institute of Medicinal Plant Development (IMPLAD), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Hong Huang
- Research Center for Pharmacology and Toxicology, Institute of Medicinal Plant Development (IMPLAD), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Qiong Wang
- Sino-Portugal TCM International Cooperation Center, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China.,Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Xinmin Liu
- Sino-Portugal TCM International Cooperation Center, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China.,Research Center for Pharmacology and Toxicology, Institute of Medicinal Plant Development (IMPLAD), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| |
Collapse
|
4
|
Polygalasaponin XXXII, a triterpenoid saponin from Polygalae Radix, attenuates scopolamine-induced cognitive impairments in mice. Acta Pharmacol Sin 2016; 37:1045-53. [PMID: 27180981 DOI: 10.1038/aps.2016.17] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Accepted: 02/18/2016] [Indexed: 12/16/2022] Open
Abstract
AIM Recent studies show that the extract of a Chinese herb Polygalae Radix exerts cognition-enhancing actions in rats and humans. The aim of this study was to characterize the pharmacological profiles of active compounds extracted from Polygalae Radix. METHODS Two fractions P3 and P6 and two compounds PTM-15 and polygalasaponin XXXII (PGS32) were prepared. Neuroprotective effects were evaluated in primary cortical neurons exposed to high concentration glutamate, serum deficiency or H2O2. Anti-dementia actions were assessed in scopolamine-induced amnesia in mice using step-through avoidance tests and channel water maze tests. After conducting the channel water maze tests, TrkB phosphorylation in mouse hippocampus was detected using Western blotting. Long-term potentiation (LTP) was induced in the dentate gyrus in adult rats; PGS32 (5 μL 400 μmol/L) was injected into the lateral cerebral ventricle 20 min after high frequency stimulation (HFS). RESULTS Compared to the fraction P6, the fraction P3 showed more prominent neuroprotective effects in vitro and cognition-enhancing effects in scopolamine-induced amnesia in mice. One active compound PGS32 in the fraction P3 exerted potent cognition-enhancing action: oral administration of PGS32 (0.125 mg·kg(-1)·d(-1)) for 19 days abolished scopolamine-induced memory impairment in mice. Furthermore, PGS32 (0.5 and 2 mg·kg(-1)·d(-1)) significantly stimulated the phosphorylation of TrkB in the hippocampus. Intracerebroventricular injection of PGS32 significantly enhanced HFS-induced LTP in the dentate gyrus of rats. CONCLUSION PGS32 attenuates scopolamine-induced cognitive impairments in mice, suggesting that it has a potential for the treatment of cognitive dysfunction and dementia.
Collapse
|
5
|
ZHAO HUAN, WANG ZHICHENG, WANG KUIFENG, CHEN XIAOYU. Aβ peptide secretion is reduced by Radix Polygalae-induced autophagy via activation of the AMPK/mTOR pathway. Mol Med Rep 2015; 12:2771-6. [DOI: 10.3892/mmr.2015.3781] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Accepted: 04/16/2015] [Indexed: 11/06/2022] Open
|
6
|
Shin IJ, Son SU, Park H, Kim Y, Park SH, Swanberg K, Shin JY, Ha SK, Cho Y, Bang SY, Lew JH, Cho SH, Maeng S. Preclinical evidence of rapid-onset antidepressant-like effect in Radix Polygalae extract. PLoS One 2014; 9:e88617. [PMID: 24520403 PMCID: PMC3919798 DOI: 10.1371/journal.pone.0088617] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2013] [Accepted: 12/22/2013] [Indexed: 01/24/2023] Open
Abstract
Radix Polygalae (the root of Polygala tenuifolia) is a herb widely used in traditional Asian medicine that is thought to exert a variety of neuropsychiatric effects. Radix Polygalae extract can protect against N-methyl D-aspartate (NMDA) neurotoxicity and induce brain-derived neurotrophic factor (BDNF) expression, suggesting modulatory roles at glutamatergic synapses and possible antidepressant action. In accordance with this hypothesis, Radix Polygalae extract demonstrated antidepressant-like effects in 8-week-old male C57Bl/6 mice by decreasing behavioral despair in the forced swim and tail suspension tasks and increasing hedonic-like behavior in the female urine sniffing test 30 minutes after a single oral administration of 0.1 mg/kg. Reduced latency to acquire a food pellet in the novely suppressed feeding paradigm, without change in anxiety-like behaviors suggested a rapid-onset nature of the antidepressant-like effect. In addition, it decreased the number of failed escapes in the learned helplessness paradigm after two oral administrations 24 hours and 30 minutes before the first test. Finally, it reversed anhedonia as measured by saccharin preference in mice exposed to the chronic stress model after two administrations of 0.1 mg/kg, in contrast to the repeated administration generally needed for similar effect by monoamergic antidepressants. Immobility reduction in tail suspension task was blocked by the α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptor antagonist NBQX, a pattern previously demonstrated by ketamine and other ketamine-like rapid-onset antidepressants. Also similarly to ketamine, Radix Polygalae appeared to acutely decrease phosphorylation of GluR1 serine-845 in the hippocampus while leaving the phosphorylation of hippocampal mTOR serine 2448 unchanged. These findings serve as preclinical evidence that Radix Polygalae extract exerts rapid-onset antidepressant effects by modulating glutamatergic synapses in critical brain circuits of depression and may be worthy of further evaluation as a safe substitute to other rapid-onset antidepressants known to have unacceptable side effects.
Collapse
Affiliation(s)
- Im-Joon Shin
- Department of Applied Korean Medicine, College of Oriental Medicine, Kyung Hee University, Seoul, Korea
| | - Sung Un Son
- Department of East-West Medicine, Graduate School of East-West Medical Science, Kyung Hee University, Yongin, Korea
| | - Hyunwoo Park
- Department of East-West Medicine, Graduate School of East-West Medical Science, Kyung Hee University, Yongin, Korea
| | - Yoorim Kim
- Department of East-West Medicine, Graduate School of East-West Medical Science, Kyung Hee University, Yongin, Korea
| | - Sung Hyun Park
- Department of East-West Medicine, Graduate School of East-West Medical Science, Kyung Hee University, Yongin, Korea
| | - Kelley Swanberg
- Department of East-West Medicine, Graduate School of East-West Medical Science, Kyung Hee University, Yongin, Korea
| | - Joo-Yeon Shin
- Department of East-West Medicine, Graduate School of East-West Medical Science, Kyung Hee University, Yongin, Korea
| | - Sang-Kyu Ha
- Department of East-West Medicine, Graduate School of East-West Medical Science, Kyung Hee University, Yongin, Korea
| | - Yoonju Cho
- Department of Applied Korean Medicine, College of Oriental Medicine, Kyung Hee University, Seoul, Korea
| | - Soo-Yong Bang
- Department of East-West Medicine, Graduate School of East-West Medical Science, Kyung Hee University, Yongin, Korea
| | - Jae-Hwan Lew
- Department of East-West Medicine, Graduate School of East-West Medical Science, Kyung Hee University, Yongin, Korea
| | - Seung-Hun Cho
- Department of Neuropsychiatry, College of Oriental Medicine, Kyung Hee University, Seoul, Korea
| | - Sungho Maeng
- Department of East-West Medicine, Graduate School of East-West Medical Science, Kyung Hee University, Yongin, Korea
- * E-mail:
| |
Collapse
|
7
|
Liang W, Lam WP, Tang HC, Leung PC, Yew DT. Current Evidence of Chinese Herbal Constituents with Effects on NMDA Receptor Blockade. Pharmaceuticals (Basel) 2013; 6:1039-54. [PMID: 24276380 PMCID: PMC3817734 DOI: 10.3390/ph6081039] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Revised: 08/06/2013] [Accepted: 08/19/2013] [Indexed: 11/17/2022] Open
Abstract
NMDA receptor (NMDA-R) is an important molecular entity governing a wide range of functions in the central nervous system. For example, the NMDA-R is involved in memory and cognition, and impairment of both (as in Alzheimer's Disease) is attributed to NMDA-mediated neurotoxicity. With greater understanding of the NMDA-R structure, antagonists with varying degrees of binding-site and subtype selectivity have been developed and put into clinical use. Discovery of target-specific Chinese herbs have also been made in parallel. This article provides an overview of the known active sites on the NMDA-R, followed by a discussion of the relevant herbs and their constituents. Experimental evidence supporting the inhibitory role of the herbal compounds on the NMDA-R is highlighted. For some of the compounds, potential research directions are also proposed to further elucidate the underlying mechanisms of the herbs. It is envisaged that future investigations based on the present data will allow more clinically relevant herbs to be identified.
Collapse
Affiliation(s)
- Willmann Liang
- Institute of Chinese Medicine, The Chinese University of Hong Kong, Hong Kong; E-Mails: (W.P.L.); (H.C.T.); (P.C.L.)
| | | | | | | | - David T. Yew
- Institute of Chinese Medicine, The Chinese University of Hong Kong, Hong Kong; E-Mails: (W.P.L.); (H.C.T.); (P.C.L.)
| |
Collapse
|
8
|
Cai ZL, Wang CY, Gu XY, Wang NJ, Wang JJ, Liu WX, Xiao P, Li CH. Tenuigenin ameliorates learning and memory impairments induced by ovariectomy. Physiol Behav 2013; 118:112-7. [PMID: 23688946 DOI: 10.1016/j.physbeh.2013.05.025] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2013] [Revised: 04/15/2013] [Accepted: 05/08/2013] [Indexed: 11/29/2022]
Abstract
Estrogen deficiency is associated with cognitive impairment. Hormone replacement therapy (HRT) has proven to be effective in preventing and reversing the memory and learning deficiencies. However, conventional estrogenic treatment could increase the risks of breast cancer and venous thromboembolism. Tenuigenin (TEN) is putatively believed as the active component extracted from a Chinese herb Polygala tenuifolia root. Although TEN has been shown to enhance learning and memory in healthy mice, it remains unknown whether or not TEN could ameliorate learning and memory impairments. In the present study, mice were divided into four groups: sham-operated (sham), ovariectomized (OVX), OVX+estradiol benzoate (EB) and OVX+TEN groups. Step-through passive avoidance and Y-maze tests were used to assess learning and memory abilities, and the number of nitric oxide synthase (NOS) positive neurons and the synaptic measurement of hippocampal CA1 area were examined. The results showed that TEN was given orally to OVX mice, leading to the improvement of learning and memory in step-through passive avoidance and Y-maze tests. TEN could reduce the loss of NOS positive neurons and prevent the synaptic morphological changes induced by ovariectomy. Our results suggest that TEN may exert a potential therapeutic value for menopause cognitive dysfunction.
Collapse
Affiliation(s)
- Zhao-Lin Cai
- College of Life Science, South China Normal University, 55W Zhongshan Ave, Guangzhou, 510631, China
| | | | | | | | | | | | | | | |
Collapse
|
9
|
Huang JN, Wang CY, Wang XL, Wu BZ, Gu XY, Liu WX, Gong LW, Xiao P, Li CH. Tenuigenin treatment improves behavioral Y-maze learning by enhancing synaptic plasticity in mice. Behav Brain Res 2013; 246:111-5. [PMID: 23499702 DOI: 10.1016/j.bbr.2013.03.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Revised: 02/25/2013] [Accepted: 03/02/2013] [Indexed: 11/25/2022]
Abstract
Polygala tenuifolia root has been used to improve memory and cognitive function in Traditional Chinese Medicine for more than 2000 years. Since tenuigenin (TEN) is one of the most utilized P. tenuifolia root extracts, it is surprising there is no evidence for the effects of TEN on learning and memory so far. In the present study, we investigated the effects of TEN on learning and memory with Y-maze test in mice. We found that oral administration of 4mg/kg TEN significantly improved learning and memory in Y-maze task. Treatment with 4mg/kg TEN markedly reduced the acetylcholinesterase (AChE) activity and malondialdehyde (MDA) level, and increased superoxide dismutase (SOD) activity in hippocampus. In the electrophysiological test of hippocampal brain slice, 2μg/ml TEN perfusion substantially enhanced field excitatory postsynaptic potential (fEPSP) amplitude both in basic synaptic transmission and after high frequency stimulation (HFS) in Schaffer to CA1 pathway (Scha-CA1). These results indicate that TEN enhancing learning and memory may result from inhibiting AChE activity, improving antioxidation and enhancing synaptic plasticity in mice. Therefore, TEN shows promise as a potential nootropic product in improving learning and memory.
Collapse
Affiliation(s)
- Jun-ni Huang
- College of Life Science, South China Normal University, 55W Zhongshan Ave, Guangzhou, China
| | | | | | | | | | | | | | | | | |
Collapse
|
10
|
Klein-Júnior LC, Meira NA, Bresolin TMB, Cechinel-Filho V, Quintão NLM. Antihyperalgesic activity of the methanol extract and some constituents obtained from Polygala cyparissias (Polygalaceae). Basic Clin Pharmacol Toxicol 2012; 111:145-53. [PMID: 22381005 DOI: 10.1111/j.1742-7843.2012.00876.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2011] [Accepted: 02/20/2012] [Indexed: 01/16/2023]
Abstract
Polygala cyparissias, used in folk medicine as an anaesthetic, has already demonstrated antinociceptive activity against acute pain. In this study, we investigated the antihyperalgesic activity of the P. cyparissias methanol extract (PCME) from which the following compounds were isolated: α-spinasterol (PC1), 1,3-dihydroxy-7-methoxyxanthone (PC2), 1,7-dihydroxy-2,3-methylenedioxyxanthone (PC3) and 1,3,6,8-tetrahydroxy-2,7-dimethoxyxanthone (PC4). The antihyperalgesic effect was evaluated using experimental models of persistent pain induced by carrageenan, lipopolysaccharide (LPS), Freund's Complete Adjuvant (CFA), PGE(2) or epinephrine. The partial ligation of the sciatic nerve (PLSN) model was also used. In inflammatory hyperalgesia induced by carrageenan, LPS, CFA or PGE(2), the inhibition values obtained with the PCME treatment were 68 ± 3%, 89 ± 5%, 43 ± 3% and 40 ± 4%, respectively. In epinephrine-induced hyperalgesia, the extract was effective, reducing 99 ± 11% of response frequency, while in PLSN, 54 ± 4% of inhibition was obtained. These results allow to suggest that the antihyperalgesic activity of PCME is, at least in part, related to its capability to inhibit the hypersensitization induced by pro-inflammatory mediators, such as LPS, carrageenan and CFA, without interfering with locomotor activity or motor performance. Furthermore, compounds PC1, PC3 and PC4 inhibited the carrageenan-induced hyperalgesia with inhibition of 42 ± 6%, 48 ± 5% and 64 ± 4%, respectively. In summary, our data demonstrate that PCME has relevant antihyperalgesic activity and that the isolated PC1, PC3 and PC4 seem to be responsible, at least in part, for this important effect.
Collapse
Affiliation(s)
- Luiz C Klein-Júnior
- Programa de Pós-Graduação em Ciências Farmacêuticas, Núcleo de Investigações Químico-Farmacêuticas, Universidade do Vale do Itajaí-UNIVALI, Itajaí, Santa Catarina, Brazil
| | | | | | | | | |
Collapse
|
11
|
Klein Júnior LC, Faloni de Andrade S, Filho VC. A Pharmacognostic Approach to the Polygala Genus: Phytochemical and Pharmacological Aspects. Chem Biodivers 2012; 9:181-209. [DOI: 10.1002/cbdv.201000319] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
|
12
|
Bettio LEB, Machado DG, Cunha MP, Capra JC, Missau FC, Santos ARS, Pizzolatti MG, Rodrigues ALS. Antidepressant-like effect of extract from Polygala paniculata: involvement of the monoaminergic systems. PHARMACEUTICAL BIOLOGY 2011; 49:1277-1285. [PMID: 22077163 DOI: 10.3109/13880209.2011.621958] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
CONTEXT Polygala paniculata Linnaeus (Polygalaceae) has shown neuroprotective effects, but there is no report about its antidepressant potential. OBJECTIVE The antidepressant-like effect of the hydroalcoholic extract from P. paniculata and some of the possible mechanisms involved in this effect were investigated in forced swimming test (FST). MATERIALS AND METHODS Mice received extract by oral route and were submitted to FST and open-field test. Animals were forced to swim and the total immobility time was registered (6-min period). A reduction in the immobility time is considered an antidepressant-like effect. In order to investigate the involvement of the monoaminergic systems, mice were treated with pharmacological antagonists before administration of the extract. RESULTS The acute administration of the hydroalcoholic extract from P. paniculata produced an antidepressant-like effect, since it significantly reduced the immobility time in FST (0.01-30 mg/kg) as compared to control group, without changing locomotor activity. Pretreatment of mice with yohimbine (1 mg/kg, i.p., α₂-adrenoceptor antagonist), propranolol (1 mg/kg, i.p., β-adrenoceptor antagonist), SCH23390 (0.05 mg/kg, s.c., dopamine D₁ receptor antagonist) or sulpiride (50 mg/kg, i.p., dopamine D₂ receptor antagonist) prevented the antidepressant-like effect of the extract in FST (30 mg/kg). Moreover, ketanserin (5 mg/kg, i.p., preferential 5-HT(2A) receptor antagonist) enhanced the effect of the extract in FST. DISCUSSION AND CONCLUSION The results of the present study indicate that the extract from P. paniculata has an antidepressant-like action that is likely mediated by an interaction with the serotonergic (5-HT2A receptors), noradrenergic (α₂ and β-receptor) and dopaminergic (D₁ and D₂ receptors) systems.
Collapse
Affiliation(s)
- Luis E B Bettio
- Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Campus Universitário-Trindade, Florianópolis-SC, Brazil
| | | | | | | | | | | | | | | |
Collapse
|
13
|
Cheong MH, Lee SR, Yoo HS, Jeong JW, Kim GY, Kim WJ, Jung IC, Choi YH. Anti-inflammatory effects of Polygala tenuifolia root through inhibition of NF-κB activation in lipopolysaccharide-induced BV2 microglial cells. JOURNAL OF ETHNOPHARMACOLOGY 2011; 137:1402-8. [PMID: 21856398 DOI: 10.1016/j.jep.2011.08.008] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2011] [Revised: 07/28/2011] [Accepted: 08/02/2011] [Indexed: 05/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The root of Polygala tenuifolia Willd is a well-known traditional Oriental medicine and has been prescribed for treatment of dysfunction in memorial systems and various brain inflammatory diseases. The present study was designed to validate the anti-inflammatory effects of the water extract of Polygala tenuifolia root (WEPT). MATERIALS AND METHODS The anti-inflammatory properties of WEPT were studied using lipopolysaccharide (LPS)-stimulated murine BV2 microglia model. As inflammatory parameters, the production of nitric oxide (NO), inducible NO synthase (iNOS), cyclooxygenase (COX)-2, prostaglandin E(2) (PGE(2)), tumor necrosis factor (TNF)-α, and interleukin (IL)-1β were evaluated. We also examined the extract's effect on the activity of nuclear factor-kappaB (NF-κB), and toll-like receptor 4 (TLR4) and myeloid differentiation factor 88 (Myd-88) expression. RESULTS WEPT suppressed LPS-induced production of NO, PGE(2), and expression of iNOS and COX-2 in a dose-dependent manner, without causing cytotoxicity. It also significantly reduced generation of proinflammatory cytokines, including IL-1β and TNF-α. In addition, WEPT suppressed NF-κB translocation by blockade of IkappaB-α (IκB-α) degradation and inhibited TLR4 and Myd-88 expression in LPS-stimulated BV2 cells. CONCLUSIONS These results indicate that the inhibitory effects of WEPT on LPS-stimulated inflammatory mediator production in BV2 microglia are associated with suppression of the NF-κB and toll-like receptor signaling pathways. Therefore, Polygala tenuifolia extracts may be useful in treatment of neurodegenerative diseases by inhibition of inflammatory mediator production in activated microglia.
Collapse
Affiliation(s)
- Myung-Hee Cheong
- Department of Oriental Neuropsychiatry, College of Oriental Medicine, Daejeon University, Daejeon 301-724, Republic of Korea
| | | | | | | | | | | | | | | |
Collapse
|
14
|
Traditional chinese medicine for senile dementia. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2011; 2012:692621. [PMID: 21808655 PMCID: PMC3144670 DOI: 10.1155/2012/692621] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2011] [Accepted: 05/09/2011] [Indexed: 12/30/2022]
Abstract
Traditional Chinese Medicine (TCM) has a 3000 years' history of human use. A literature survey addressing traditional evidence from human studies was done, with key result that top 10 TCM herb ingredients including Poria cocos, Radix polygalae, Radix glycyrrhizae, Radix angelica sinensis, and Radix rehmanniae were prioritized for highest potential benefit to dementia intervention, related to the highest frequency of use in 236 formulae collected from 29 ancient Pharmacopoeias, ancient formula books, or historical archives on ancient renowned TCM doctors, over the past 10 centuries. Based on the history of use, there was strong clinical support that Radix polygalae is memory improving. Pharmacological investigation also indicated that all the five ingredients mentioned above can elicit memory-improving effects in vivo and in vitro via multiple mechanisms of action, covering estrogen-like, cholinergic, antioxidant, anti-inflammatory, antiapoptotic, neurogenetic, and anti-Aβ activities. Furthermore, 11 active principles were identified, including sinapic acid, tenuifolin, isoliquiritigenin, liquiritigenin, glabridin, ferulic acid, Z-ligustilide, N-methyl-beta-carboline-3-carboxamide, coniferyl ferulate and 11-angeloylsenkyunolide F, and catalpol. It can be concluded that TCM has a potential for complementary and alternative role in treating senile dementia. The scientific evidence is being continuously mined to back up the traditional medical wisdom.
Collapse
|
15
|
Choi Y, Kim SK, Choi IY, Ju C, Nam KW, Hwang S, Kim BW, Yoon MJ, Won MH, Park YK, Kim WK. Amelioration of cerebral infarction and improvement of neurological deficit by a Korean herbal medicine, modified Bo-Yang-Hwan-O-Tang. ACTA ACUST UNITED AC 2011; 63:695-706. [PMID: 21492172 DOI: 10.1111/j.2042-7158.2011.01254.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
OBJECTIVES Modified Bo-Yang-Hwan-O-Tang (mBHT) is an improved herbal formula of BHT, which has been widely used to treat ischaemic stroke in East Asia, by the addition of five herbs having anti-ischaemic properties. In this study, we investigated whether mBHT would reduce cerebral ischaemic injury in rats. METHODS Sprague-Dawley rats were subjected to a 90-min middle cerebral artery occlusion (MCAO) and subsequent 22-h reperfusion. mBHT was administered either intraperitoneally twice 15 min before and 15 min after, or orally once 30 min or 120 min after the onset of MCAO (50 or 200 mg/kg each). KEY FINDINGS Intraperitoneal administration of mBHT markedly reduced the cerebral infarct size and neurological deficit caused by MCAO/reperfusion. mBHT treatment also significantly improved long-term survival rate after cerebral ischaemic injury. Oral administration of mBHT 30 min after ischaemia also markedly reduced the infarct size after cerebral ischaemia. The anti-ischaemic effect of mBHT was significantly, but not fully, reduced when mBHT-induced hypothermia was abolished. In cultured cortical neurons, we further found that mBHT decreased oxygen-glucose deprivation/re-oxygenation-evoked neuronal injury by inhibiting production of reactive oxygen species, decrease in mitochondrial transmembrane potential, and activation of caspase-3. However, mBHT did not inhibit N-Methyl-D-aspartate (NMDA) receptor-mediated excitotoxicity. CONCLUSIONS Taken together, our data suggest that mBHT has multiple anti-ischaemic properties and would be a good therapeutic herbal prescription for the treatment of cerebral ischaemic stroke.
Collapse
Affiliation(s)
- Yookeum Choi
- Department of Neuroscience, College of Medicine, Korea University, Seoul, Republic of Korea
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
16
|
Lee B, Choi EJ, Lee EJ, Han SM, Hahm DH, Lee HJ, Shim I. The neuroprotective effect of methanol extract of gagamjungjihwan and fructus euodiae on ischemia-induced neuronal and cognitive impairment in the rat. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2011; 2011:685254. [PMID: 19395577 PMCID: PMC3137009 DOI: 10.1093/ecam/nep028] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2007] [Accepted: 03/12/2009] [Indexed: 11/13/2022]
Abstract
Gagamjungjihwan (GJ), a decoction consisting of five herbs including ginseng, Acori Graminei Rhizoma, Uncariae Ramulus et Uncus, Polygalae Radic and Frustus Euodiae (FE), has been widely used as herbal treatment for ischemia. In order to investigate the neuroprotective action of this novel prescription, we examined the influence of GJ and FE on learning and memory using the Morris water maze and studied their affects on the central cholinergic system in the hippocampus with neuronal and cognitive impairment. After middle cerebral artery occlusion was applied for 2 h, rats were administered GJ (200 mg kg(-1), p.o.) or FE (200 mg kg(-1), p.o.) daily for 2 weeks, followed by training and performance of the Morris water maze tasks. Rats with ischemic insults showed impaired learning and memory of the tasks. Pre-treatment with GJ and FE produced improvement in the escape latency to find the platform. Pre-treatments with GJ and FE also reduced the loss of cholinergic immunoreactivity in the hippocampus. The results demonstrated that GJ and FE have a protective effect against ischemia-induced neuronal and cognitive impairment. Our results suggest that GJ and FE might be useful in the treatment of vascular dementia.
Collapse
Affiliation(s)
- Bombi Lee
- Acupuncture and Meridian Scientific Research Center, Kyung Hee University, Seoul, Republic of Korea
| | | | | | | | | | | | | |
Collapse
|
17
|
Lin PC, Chang LF, Liu PY, Lin SZ, Wu WC, Chen WS, Tsai CH, Chiou TW, Harn HJ. Botanical Drugs and Stem Cells. Cell Transplant 2011; 20:71-83. [PMID: 20887674 DOI: 10.3727/096368910x532747] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
The potential to generate virtually any differentiated cell type from stem cells offers the possibility of creating new sources of cells for regenerative medicine. To realize this potential, it will be essential to control stem cell differentiation. Chinese herbal medicine is a major aspect of traditional Chinese medicine and is a rich source of unique chemicals. As such, individual herbs or extracts may play a role in the proliferation and differentiation of stem cells. In this review, we discuss some of the Chinese herbal medicines that are used to treat human diseases such as neuronal degenerative diseases, cardiovascular diseases, and osteoporosis. We also describe the relationship between Chinese herbal medicines and stem cell regulation.
Collapse
Affiliation(s)
- Po-Cheng Lin
- Department of Life Science and Graduate Institute of Biotechnology, National Dong Hwa University, Hualien, Taiwan
- Center for Neuropsychiatry, China Medical University Hospital, Taichung, Taiwan
| | - Li-Fu Chang
- Department of Life Science and Graduate Institute of Biotechnology, National Dong Hwa University, Hualien, Taiwan
| | - Po-Yen Liu
- Graduate Institute of Chinese Medical Science, China Medical University, Taichung, Taiwan
| | - Shinn-Zong Lin
- Center for Neuropsychiatry, China Medical University Hospital, Taichung, Taiwan
- China Medical University Beigang Hospital, Yun-Lin, Taiwan
| | - Wan-Chen Wu
- Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan
| | - Wuen-Shyong Chen
- Department of Stem Cell Applied Technology, Gwo Xi Stem Cell Applied Technology, Hsinchu, Taiwan
| | - Chang-Hai Tsai
- Department of Pediatrics, China Medical University Hospital, Taichung, Taiwan
- Department of Healthcare Administration, Asia University, Taichung, Taiwan
| | - Tzyy-Wen Chiou
- Department of Life Science and Graduate Institute of Biotechnology, National Dong Hwa University, Hualien, Taiwan
| | - Horng-Jyh Harn
- Department of Pathology, China Medical University and Hospital, Taichung, Taiwan
- Department of Medicine, China Medical University, Taichung, Taiwan
| |
Collapse
|
18
|
Son HY, Jung HW, Kim WK, Park YK. The vasoprotective effect of JP05 through the activation of PI3K/Akt-dependent eNOS and MEK/ERK pathways in brain endothelial cells. JOURNAL OF ETHNOPHARMACOLOGY 2010; 130:607-613. [PMID: 20561929 DOI: 10.1016/j.jep.2010.05.050] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2010] [Revised: 05/14/2010] [Accepted: 05/25/2010] [Indexed: 05/29/2023]
Abstract
AIM OF THE STUDY Endothelial dysfunction is involved in stroke. Recent therapeutic options for stroke have focused on the combination therapy with a polyherbal mixture. This study was designed to provide insight into the effects of JP05, a water extract of 12 herbs, on the levels of regulators in bEnd.3 mouse brain endothelial cells. MATERIALS AND METHODS Production of endothelial nitric oxide synthase (eNOS)-mediated nitric oxide (NO), the expression of vascular endothelial growth factor (VEGF) and the phosphorylations of eNOS, phosphatidylinositol 3-kinase (PI3K)/Akt, extracellular signal-regulated protein kinase (ERK) and cAMP response element binding protein (CREB) in JP05 were assayed in bEnd.3 cells, a mouse brain endothelial line. RESULTS JP05 led to increase the levels of eNOS-mediated NO generation and VEGF expression in bEnd.3 cells. JP05 induced the phosphorylation of eNOS, Akt and ERK in bEnd.3 cells. As well, JP05 blocked the inhibition of PI3K/Akt and ERK activities by LY294002 (PI3K/Akt inhibitor) and PD98059 (mitogen-activated protein kinase inhibitor), respectively. JP05 also induced the phosphorylation of CREB, which plays an important role in endothelial cell function and blood vessel development. CONCLUSION Taken together, these results indicate that JP05 can upregulate eNOS-mediated NO generation and VEGF expression through the ERK and/or PI3K/Akt activation, an upstream event of angiogenesis. JP05 with vasoprotective properties has a potential therapy for human brain diseases including stroke.
Collapse
Affiliation(s)
- Hye Young Son
- Oriental Medicine R&D Center, College of Oriental Medicine, Dongguk University, Gyeongju, Republic of Korea
| | | | | | | |
Collapse
|
19
|
Farina M, Franco JL, Ribas CM, Meotti FC, Missau FC, Pizzolatti MG, Dafre AL, Santos ARS. Protective effects of Polygala paniculata extract against methylmercury-induced neurotoxicity in mice. J Pharm Pharmacol 2010; 57:1503-8. [PMID: 16259784 DOI: 10.1211/jpp.57.11.0017] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Abstract
We have examined the possible protective effects of Polygala paniculata extract against methylmercury (MeHg)-induced neurotoxicity in adult mice. MeHg was diluted in drinking water (40 mg L−1, freely available) and the hydroalcoholic Polygala extract was diluted in a 150 mm NaCl solution and administered by gavage (100 mg kg−1 b.w., twice a day). After a two-week treatment, MeHg exposure significantly inhibited glutathione peroxidase and increased glutathione reductase activity, while the levels of thiobarbituric acid reactive substances were increased in the cerebral cortex and cerebellum. These alterations were prevented by administration of Polygala extract, except for glutathione reductase activity, which remained elevated in the cerebral cortex. Behavioural interference in the MeHg-exposed animals was evident through a marked deficit in the motor performance in the rotarod task, which was completely recovered to control levels by Polygala extract co-administration. This study has shown, for the first time, the in-vivo protective effects of Polygala extract against MeHg-induced neurotoxicity. In addition, our findings encourage studies concerning the beneficial effects of P. paniculata on neurological conditions related to excitotoxicity and oxidative stress.
Collapse
Affiliation(s)
- Marcelo Farina
- Departamento de Bioquímica, Centro de Cieências Biológicas, Universidade Federal de Santa Catarina, 88040-900, Florianópolis, SC, Brazil.
| | | | | | | | | | | | | | | |
Collapse
|
20
|
Martins RDP, Braga HDC, da Silva AP, Dalmarco JB, de Bem AF, dos Santos ARS, Dafre AL, Pizzolatti MG, Latini A, Aschner M, Farina M. Synergistic neurotoxicity induced by methylmercury and quercetin in mice. Food Chem Toxicol 2008; 47:645-9. [PMID: 19141311 DOI: 10.1016/j.fct.2008.12.020] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2008] [Revised: 11/10/2008] [Accepted: 12/17/2008] [Indexed: 11/19/2022]
Abstract
Methylmercury (MeHg) is a highly neurotoxic pollutant, whose mechanisms of toxicity are related to its pro-oxidative properties. A previous report showed under in vivo conditions the neuroprotective effects of plants of the genus Polygala against MeHg-induced neurotoxicity. Moreover, the flavonoid quercetin, isolated from Polygala sabulosa, displayed beneficial effects against MeHg-induced oxidative damage under in vitro conditions. In this study, we sought for potential beneficial effects of quercetin against the neurotoxicity induced by MeHg in Swiss female mice. Animals were divided into six experimental groups: control, quercetin low dose (5 mg/kg), quercetin high dose (50 mg/kg), MeHg (40 mg/L, in tap water), MeHg+quercetin low dose, and MeHg+quercetin high dose. After the treatment (21 days), a significant motor deficit was observed in MeHg+quercetin groups. Biochemical parameters related to oxidative stress showed that the simultaneous treatment with quercetin and MeHg caused a higher cerebellar oxidative damage when compared to the individual exposures. MeHg plus quercetin elicited a higher cerebellar lipid peroxidation than MeHg or quercetin alone. The present results indicate that under in vivo conditions quercetin and MeHg cause additive pro-oxidative effects toward the mice cerebellum and that such phenomenon is associated with the observed motor deficit.
Collapse
Affiliation(s)
- Roberta de P Martins
- Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Campus Trindade, 88040-900 Florianópolis, SC, Brazil
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
21
|
Park HJ, Lee K, Heo H, Lee M, Kim JW, Whang WW, Kwon YK, Kwon H. Effects ofPolygala tenuifoliaroot extract on proliferation of neural stem cells in the hippocampal CA1 region. Phytother Res 2008; 22:1324-9. [DOI: 10.1002/ptr.2488] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
22
|
|
23
|
Ban JY, Cho SO, Choi SH, Ju HS, Kim JY, Bae K, Song KS, Seong YH. Neuroprotective Effect of Smilacis chinae Rhizome on NMDA-Induced Neurotoxicity In Vitro and Focal Cerebral Ischemia In Vivo. J Pharmacol Sci 2008; 106:68-77. [DOI: 10.1254/jphs.fp0071206] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
|
24
|
Franco JL, Braga HC, Stringari J, Missau FC, Posser T, Mendes BG, Leal RB, Santos ARS, Dafre AL, Pizzolatti MG, Farina M. Mercurial-Induced Hydrogen Peroxide Generation in Mouse Brain Mitochondria: Protective Effects of Quercetin. Chem Res Toxicol 2007; 20:1919-26. [DOI: 10.1021/tx7002323] [Citation(s) in RCA: 104] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jeferson L. Franco
- Departamento de Bioquímica, Centro de Ciências Biológicas, Departamento de Ciências Fisiológicas, Centro de Ciências Biológicas, and Departamento de Química, Centro de Ciências Físicas e Matemáticas, Universidade Federal de Santa Catarina, 88040-900, Florianópolis, SC, Brazil
| | - Hugo C. Braga
- Departamento de Bioquímica, Centro de Ciências Biológicas, Departamento de Ciências Fisiológicas, Centro de Ciências Biológicas, and Departamento de Química, Centro de Ciências Físicas e Matemáticas, Universidade Federal de Santa Catarina, 88040-900, Florianópolis, SC, Brazil
| | - James Stringari
- Departamento de Bioquímica, Centro de Ciências Biológicas, Departamento de Ciências Fisiológicas, Centro de Ciências Biológicas, and Departamento de Química, Centro de Ciências Físicas e Matemáticas, Universidade Federal de Santa Catarina, 88040-900, Florianópolis, SC, Brazil
| | - Fabiana C. Missau
- Departamento de Bioquímica, Centro de Ciências Biológicas, Departamento de Ciências Fisiológicas, Centro de Ciências Biológicas, and Departamento de Química, Centro de Ciências Físicas e Matemáticas, Universidade Federal de Santa Catarina, 88040-900, Florianópolis, SC, Brazil
| | - Thais Posser
- Departamento de Bioquímica, Centro de Ciências Biológicas, Departamento de Ciências Fisiológicas, Centro de Ciências Biológicas, and Departamento de Química, Centro de Ciências Físicas e Matemáticas, Universidade Federal de Santa Catarina, 88040-900, Florianópolis, SC, Brazil
| | - Beatriz G. Mendes
- Departamento de Bioquímica, Centro de Ciências Biológicas, Departamento de Ciências Fisiológicas, Centro de Ciências Biológicas, and Departamento de Química, Centro de Ciências Físicas e Matemáticas, Universidade Federal de Santa Catarina, 88040-900, Florianópolis, SC, Brazil
| | - Rodrigo B. Leal
- Departamento de Bioquímica, Centro de Ciências Biológicas, Departamento de Ciências Fisiológicas, Centro de Ciências Biológicas, and Departamento de Química, Centro de Ciências Físicas e Matemáticas, Universidade Federal de Santa Catarina, 88040-900, Florianópolis, SC, Brazil
| | - Adair R. S. Santos
- Departamento de Bioquímica, Centro de Ciências Biológicas, Departamento de Ciências Fisiológicas, Centro de Ciências Biológicas, and Departamento de Química, Centro de Ciências Físicas e Matemáticas, Universidade Federal de Santa Catarina, 88040-900, Florianópolis, SC, Brazil
| | - Alcir L. Dafre
- Departamento de Bioquímica, Centro de Ciências Biológicas, Departamento de Ciências Fisiológicas, Centro de Ciências Biológicas, and Departamento de Química, Centro de Ciências Físicas e Matemáticas, Universidade Federal de Santa Catarina, 88040-900, Florianópolis, SC, Brazil
| | - Moacir G. Pizzolatti
- Departamento de Bioquímica, Centro de Ciências Biológicas, Departamento de Ciências Fisiológicas, Centro de Ciências Biológicas, and Departamento de Química, Centro de Ciências Físicas e Matemáticas, Universidade Federal de Santa Catarina, 88040-900, Florianópolis, SC, Brazil
| | - Marcelo Farina
- Departamento de Bioquímica, Centro de Ciências Biológicas, Departamento de Ciências Fisiológicas, Centro de Ciências Biológicas, and Departamento de Química, Centro de Ciências Físicas e Matemáticas, Universidade Federal de Santa Catarina, 88040-900, Florianópolis, SC, Brazil
| |
Collapse
|
25
|
Lucena GMRDS, Franco JL, Ribas CM, Azevedo MS, Meotti FC, Gadotti VM, Dafre AL, Santos ARS, Farina M. Cipura paludosa extract prevents methyl mercury-induced neurotoxicity in mice. Basic Clin Pharmacol Toxicol 2007; 101:127-31. [PMID: 17651315 DOI: 10.1111/j.1742-7843.2007.00091.x] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Cipura paludosa (Iridaceae), a native plant widely distributed in the north of Brazil, is used in traditional medicine as an anti-inflammatory and analgesic agent, against tuberculosis and gonorrhoea and for regulation of menstrual flow. However, scientific studies on the pharmacological properties of C. paludosa are scarce. We have examined the potential protective effects of the ethanolic extract of C. paludosa against methyl mercury (MeHg)-induced neurotoxicity in adult mice. MeHg was diluted in drinking water (40 mg/l, freely available) and the ethanolic C. paludosa extract (CE) was diluted in a 150 mM NaCl solution and administered by gavage (10 and 100 mg/kg body weight, respectively, twice a day). Because treatment lasted for 14 days and each animal weighed around 40 g, the total dosage of plant extract given to each mouse was 5.6 and 56 g, respectively. After the treatment period, MeHg exposure induced a significant deficit in the motor coordination, which was evident by a reduction (90%) in the falling latency in the rotarod apparatus. Interestingly, this phenomenon was completely recovered to control levels by CE co-administration, independent of dosages. MeHg exposure inhibited cerebellar glutathione peroxidase (mean percentage inhibition of 42%) - an important enzyme involved in the detoxification of endogenous peroxides - and this effect was prevented by co-administration of CE. Conversely, MeHg exposure increased cerebellar glutathione reductase activity (mean percentage inhibition of 70%), and this phenomenon was not affected by C. paludosa co-administration. Neither MeHg nor CE changed the cerebellar glutathione levels. This study has shown for the first time, the in vivo protective effects of CE against MeHg-induced neurotoxicity. In addition, our findings encourage studies concerning the beneficial effects of C. paludosa on neurological conditions related to excitotoxicity and oxidative stress.
Collapse
Affiliation(s)
- Greice M R de S Lucena
- Health Center, Federal University of Rondônia, Campus Universitário, José Ribeiro Filho, Porto Velho, RO, Brazil
| | | | | | | | | | | | | | | | | |
Collapse
|
26
|
Yun YJ, Lee B, Hahm DH, Kang SK, Han SM, Lee HJ, Pyun KH, Shim I. Neuroprotective Effect of Palmul-Chongmyeong-Tang on Ischemia-Induced Learning and Memory Deficits in the Rat. Biol Pharm Bull 2007; 30:337-42. [PMID: 17268076 DOI: 10.1248/bpb.30.337] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Ginseng Radix, Atractylodis Macrocephalae Rhizoma, Poria, Glycyrrhizae Radix, Angelicae Gigantis Radix, Ligusticum Rhizoma, Rehmanniae Radix, Paeoniae Radix, Acori Graminei Rhizoma, and Polygalae Radix have been widely used as herbal medicine against ischemia. In order to test the neuroprotective effect of a novel prescription, the present study examined the effects of Palmul-Chongmyeong-Tang (PMCMT) consisting of these ten herbs on learning and memory in the Morris water maze task and the central cholinergic system of rats with cerebral ischemia-induced neuronal and cognitive impairments. After middle cerebral artery occlusion (MCAO) for 2 h, rats were administered with saline or PMCMT (200 mg/kg, p.o.) daily for 2 weeks, followed by their training to the tasks. In the water maze test, the animals were trained to find a platform in a fixed position during 6 d and then received a 60 s probe trial on the 7th day following removal of the platform from the pool. Rats with ischemic insults showed impaired learning and memory of the tasks and treatment with PMCMT produced a significant improvement in escape latency to find the platform in the Morris water maze. Consistent with behavioral data, treatment with PMCMT also reduced the loss of cholinergic immunoreactivity in the hippocampus induced by cerebral ischemia. These results demonstrated that PMCMT has a protective effect against ischemia-induced neuronal and cognitive impairments. The present study suggested that PMCMT might be useful in the treatment of vascular dementia.
Collapse
Affiliation(s)
- Young-Ju Yun
- Department of Oriental Med. Science, Graduate School of East-West Med. Science, Institute of Oriental Medicine, Kyung Hee University, Suwon, Korea
| | | | | | | | | | | | | | | |
Collapse
|
27
|
Naito R, Tohda C. Characterization of Anti-neurodegenerative Effects of Polygala tenuifolia in A.BETA.(25-35)-Treated Cortical Neurons. Biol Pharm Bull 2006; 29:1892-6. [PMID: 16946504 DOI: 10.1248/bpb.29.1892] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Although Polygala tenuifolia WILLD (PT) was classically mentioned as an anti-dementia drug in Chinese and Japanese traditional medicine, basic research showed only enhancement of the cholinergic function. In Alzheimer's disease, neuritic atrophy and synaptic loss occur prior to neuronal death event, and may be the first trigger of the memory impairment. Therefore, we studied effects of Polygala tenuifolia WILLD (PT) on Abeta(25-35)-induced neuronal damage using rat cortical neurons for characterization of activities of PT under Abeta-induced neuronal damage. Treatment with the water extract of PT enhanced axonal length dose-dependently after Abeta(25-35)-induced axonal atrophy. However, dendritic atrophy and synaptic loss induced by Abeta(25-35) were not recovered by treatment with PT extract. In contrast, Abeta(25-35)-induced cell damage was completely inhibited by PT extract. By characterization of PT effects on neuronal morphological plasticity and cell damage, usefulness as well as an insufficiency of PT as an anti-dementia drug was clarified.
Collapse
Affiliation(s)
- Rie Naito
- Division of Biofunctional Evaluation, Research Center for Ethnomedicine, Institute of Natural Medicine, University of Toyama, Toyoma, Japan
| | | |
Collapse
|