1
|
Jiang QC, Wang QQ, Xiao CX, Tan ZJ, Liu PP, Sun HM, Liao HB, Xu W, Jiang RW. Chemical constituents with inhibition against TNF-α from Merrillanthus hainanensis. Fitoterapia 2021; 152:104938. [PMID: 34022295 DOI: 10.1016/j.fitote.2021.104938] [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: 04/07/2021] [Revised: 05/13/2021] [Accepted: 05/15/2021] [Indexed: 10/21/2022]
Abstract
Two new steroidal glycosides oxystauntoside A (1) and oxystauntoside B (2), together with sixteen known compounds (3-18) were isolated from the 95% ethanol extract of Merrillanthus hainanensis. Their structures were characterized by extensive spectroscopic analysis including NMR and mass spectra and single crystal X-ray crystallography. The absolute configuration of 1 and 2 were further determined by ECD calculations. All of these compounds were isolated from M. hainanensis for the first time. All the fractions and compounds were tested for the anti-inflammatory activity against the TNF-α factor. The ethyl acetate fraction showed the most potent inhibition (71.3%) at 10 μg/mL and compounds 5 (78.9%) and 9 (73.4%) in this fraction with both carboxyl and phenolic hydroxyl groups showed significant inhibition at 10 μM. Our study provided the first scientific report for the medicinal value of M. hainanensis.
Collapse
Affiliation(s)
- Qian-Cai Jiang
- Zhongshan Management Centre of the Natural Protected Area, Zhongshan city, Guangdong province 528436, China
| | - Qi-Qi Wang
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education, Jinan University, Guangzhou city 510632, China
| | - Chun-Xia Xiao
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education, Jinan University, Guangzhou city 510632, China
| | - Zong-Jian Tan
- Zhongshan Management Centre of the Natural Protected Area, Zhongshan city, Guangdong province 528436, China
| | - Pan-Pan Liu
- Zhongshan Management Centre of the Natural Protected Area, Zhongshan city, Guangdong province 528436, China
| | - Hong-Mei Sun
- Zhongshan Management Centre of the Natural Protected Area, Zhongshan city, Guangdong province 528436, China
| | - Hao-Bing Liao
- Zhongshan Management Centre of the Natural Protected Area, Zhongshan city, Guangdong province 528436, China
| | - Wei Xu
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education, Jinan University, Guangzhou city 510632, China
| | - Ren-Wang Jiang
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education, Jinan University, Guangzhou city 510632, China.
| |
Collapse
|
2
|
Postural control in paw distance after labyrinthectomy-induced vestibular imbalance. Med Biol Eng Comput 2020; 58:3039-3047. [PMID: 33079344 DOI: 10.1007/s11517-020-02276-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Accepted: 10/14/2020] [Indexed: 12/22/2022]
Abstract
Balance control is accomplished by the anatomical link which provides the neural information for the coordination of skeletal muscles. However, there are few experimental proofs to directly show the neuroanatomical connection. Here, we examined the behavioral alterations by constructing an animal model with chemically induced unilateral labyrinthectomy (UL). In the experiment using rats (26 for UL, 14 for volume cavity, 355-498 g, male), the models were initially evaluated by the rota-rod (RR) test (21/26, 80.8%) and ocular displacement (23/26, 88.5%). The duration on the rolling rod decreased from 234.71 ± 64.25 s (4th trial before UL) to 11.81 ± 17.94 s (1st trial after UL). Also, the ocular skewed deviation (OSD) was observed in the model with left (5.79 ± 3.06°) and right lesion (3.74 ± 2.69°). Paw distance (PW) was separated as the front (FPW) and the hind side (HPW), and the relative changes of HPW (1.71 ± 1.20 cm) was larger than those of FPW (1.39 ± 1.06 cm), providing a statistical significance (p = 1.51 × 10-4, t test). Moreover, the results of the RR tests matched to those of the changing rates (18/21, 85.7%), and the changes (16/18, 88.9%) were dominantly observed in HPW (in FPW, 2/18, 11.1%). Current results indicated that the UL directly affected the changes in HPW more than those in FPW. In conclusion, the missing neural information from the peripheral vestibular system caused the abnormal posture in HPW, and the postural instability might reduce the performance during the voluntary movement shown in the RR test, identifying the relation between the walking imbalance and the unstable posture in PW. Graphical abstract.
Collapse
|
3
|
Mu SW, Dang Y, Fan YC, Zhang H, Zhang JH, Wang W, Wang SS, Gu JJ. Effect of HMGB1 and RAGE on brain injury and the protective mechanism of glycyrrhizin in intracranial‑sinus occlusion followed by mechanical thrombectomy recanalization. Int J Mol Med 2019; 44:813-822. [PMID: 31257456 PMCID: PMC6657987 DOI: 10.3892/ijmm.2019.4248] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Accepted: 06/07/2019] [Indexed: 01/28/2023] Open
Abstract
The key to successful treatment of cerebral venous-sinus occlusion (CVO) is the rapid recanalization of the sinus following venous-sinus occlusion; however, rapid recanalization of the sinus may also cause secondary cerebral injury. The present study examined mechanical thrombectomy-related brain injury and the possible molecular mechanisms following CVO recanalization, and investigated the protective effect of glycyrrhizin (GL) in CVO recanalization. The cerebral venous sinus thrombosis (CVST) model was induced in rats using 40% FeCl3. Mechanical thrombectomy was performed at 6 h post-thrombosis. GL was administered to rats following thromboembolism. Neurological function and brain water content were measured prior to sacrifice of the rats. Serum malondialdehyde, superoxide dismutase and nitric-oxide synthase concentrations were measured. The expression levels of high-mobility group box 1 (HMGB1) and receptor of advanced glycation end products (RAGE) and its downstream inflammatory mediators were measured in serum and brain tissues. Rapid CVO recanalization caused brain injury, and the brain parenchymal damage and neurological deficits caused by CVO were not completely restored following recanalization. Similarly, following rapid recanalization in the venous sinus, the expression levels of HMGB1 and RAGE were lower than those in the CVST group, but remained significantly higher than those of the sham group. The combination of mechanical thrombectomy and GL improved cerebral infarction and cerebral edema in rats, and inhibited the extracellular transport of HMGB1, and the expression of downstream inflammatory factors and oxidative-stress products. The administration of exogenous recombinant HMGB1 reversed the neural protective effects of GL. In conclusion, mechanical thrombectomy subsequent to CVO in rats can cause brain injury following recanalization. HMGB1 and RAGE promote inflammation in the process of brain injury following recanalization. GL has a relatively reliable neuroprotective effect on brain injury by inhibiting HMGB1 and its downstream inflammatory factors, and decreasing oxidative stress.
Collapse
Affiliation(s)
- Shu-Wen Mu
- Department of Neurosurgery, Dongfang Affiliated Hospital of Xiamen University (900 Hospital of The Joint Logistics Team), Fuzhou, Fujian 350025, P.R. China
| | - Yuan Dang
- Department of Comparative Medicine, Dongfang Affiliated Hospital of Xiamen University (900 Hospital of The Joint Logistics Team), Fuzhou, Fujian 350025, P.R. China
| | - Ya-Cao Fan
- Fuzong Clinical Medical College of Fujian Medical University, Fuzhou, Fujian 350025, P.R. China
| | - Hao Zhang
- Department of Neurosurgery, 900 Hospital of The Joint Logistics Team, Fuzhou, Fujian 350025, P.R. China
| | - Jian-He Zhang
- Department of Neurosurgery, 900 Hospital of The Joint Logistics Team, Fuzhou, Fujian 350025, P.R. China
| | - Wei Wang
- Fuzong Clinical Medical College of Fujian Medical University, Fuzhou, Fujian 350025, P.R. China
| | - Shou-Sen Wang
- Department of Neurosurgery, Dongfang Affiliated Hospital of Xiamen University (900 Hospital of The Joint Logistics Team), Fuzhou, Fujian 350025, P.R. China
| | - Jian-Jun Gu
- Department of Neurosurgery, 900 Hospital of The Joint Logistics Team, Fuzhou, Fujian 350025, P.R. China
| |
Collapse
|
4
|
Qian X, Li B, Li P, Wang D, Dai W, Zhang M. C 21 steroidal glycosides from Cynanchum auriculatum and their neuroprotective effects against H 2O 2-induced damage in PC12 cells. PHYTOCHEMISTRY 2017; 140:1-15. [PMID: 28437621 DOI: 10.1016/j.phytochem.2017.04.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Revised: 04/13/2017] [Accepted: 04/18/2017] [Indexed: 06/07/2023]
Abstract
Twenty-three undescribed previously C21 steroidal glycosides, named saccatols D-K and cynsaccatols I-W, together with six known analogs were isolated from the roots of Cynanchum auriculatum Royle ex Wight (Apocynaceae). Their structures were elucidated by a variety of spectroscopic techniques, as well as HRESIMS and GC method. All isolated compounds were tested their neuroprotective effects on the model of H2O2-induced damage to PC12 cells. Except saccatols D-F, J, cynsaccatol V and wilfoside A, other twenty-three isolates produced significantly activities against H2O2-induced cell damage (P < 0.001). Furthermore, cynsaccatols I, N, O and S can obvious inhibition of damaged PC12 cell apoptosis at their dosages of 1 μM by Annexin V-FITC/PI double staining assay with flow cytometry.
Collapse
Affiliation(s)
- Xicheng Qian
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, China
| | - Baocai Li
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, China
| | - Peng Li
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macau 999078, China
| | - Dong Wang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, China
| | - Weifeng Dai
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, China
| | - Mi Zhang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, China.
| |
Collapse
|
5
|
Wu X, Zhu L, Ma J, Ye Y, Lin G. Adduct ion-targeted qualitative and quantitative analysis of polyoxypregnanes by ultra-high pressure liquid chromatography coupled with triple quadrupole mass spectrometry. J Pharm Biomed Anal 2017; 145:127-136. [PMID: 28662480 DOI: 10.1016/j.jpba.2017.06.038] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Revised: 06/13/2017] [Accepted: 06/17/2017] [Indexed: 11/29/2022]
Abstract
Polyoxypregnane and its glycosides (POPs) are frequently present in plants of Asclepiadaceae family, and have a variety of biological activities. There is a great need to comprehensively profile these phytochemicals and to quantify them for monitoring their contents in the herbs and the biological samples. However, POPs undergo extensive adduct ion formation in ESI-MS, which has posed a challenge for qualitative and quantitative analysis of POPs. In the present study, we took the advantage of such extensive adduct ion formation to investigate the suitability of adduct ion-targeted analysis of POPs. For the qualitative analysis, we firstly demonstrated that the sodium and ammonium adduct ion-targeted product ion scans (PIS) provided adequate MS/MS fragmentations for structural characterization of POPs. Aided with precursor ion (PI) scans, which showed high selectivity and sensitivity and improved peak assignment confidence in conjunction with full scan (FS), the informative adduct ion-targeted PIS enabled rapid POPs profiling. For the quantification, we used formic acid rather than ammonium acetate as an additive in the mobile phase to avoid simultaneous formation of sodium and ammonium adduct ions, and greatly improved reproducibility of MS response of POPs. By monitoring the solely formed sodium adduct ions [M+Na]+, a method for simultaneous quantification of 25 POPs in the dynamic multiple reaction monitoring mode was then developed and validated. Finally, the aforementioned methods were applied to qualitative and quantitative analysis of POPs in the extract of a traditional Chinses medicinal herb, Marsdenia tenacissima (Roxb.) Wight et Arn., and in the plasma obtained from the rats treated with this herb. The results demonstrated that adduct ion formation could be optimized for the qualitative and quantitative analysis of POPs, and our developed PI/FS-PIS scanning and sole [M+Na]+ ion monitoring significantly improved the analysis of POPs in both herbal and biological samples. This study also provides implications for the analysis of other compounds which undergo extensive adduct ion formation in ESI-MS.
Collapse
Affiliation(s)
- Xu Wu
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, PR China; Joint Research Laboratory of Promoting Globalization of Traditional Chinese Medicines between The Chinese University of Hong Kong and Shanghai Institute of Materia Medica, Chinese Academy of Sciences, PR China; Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, PR China
| | - Lin Zhu
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, PR China; Joint Research Laboratory of Promoting Globalization of Traditional Chinese Medicines between The Chinese University of Hong Kong and Shanghai Institute of Materia Medica, Chinese Academy of Sciences, PR China
| | - Jiang Ma
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, PR China; Joint Research Laboratory of Promoting Globalization of Traditional Chinese Medicines between The Chinese University of Hong Kong and Shanghai Institute of Materia Medica, Chinese Academy of Sciences, PR China
| | - Yang Ye
- Joint Research Laboratory of Promoting Globalization of Traditional Chinese Medicines between The Chinese University of Hong Kong and Shanghai Institute of Materia Medica, Chinese Academy of Sciences, PR China; State Key Laboratory of Drug Research and Natural Products Chemistry Department, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, PR China
| | - Ge Lin
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, PR China; Joint Research Laboratory of Promoting Globalization of Traditional Chinese Medicines between The Chinese University of Hong Kong and Shanghai Institute of Materia Medica, Chinese Academy of Sciences, PR China.
| |
Collapse
|
6
|
Activity of two extracts of Cynanchum paniculatum against Ichthyophthirius multifiliis theronts and tomonts. Parasitology 2016; 144:179-185. [PMID: 27928976 DOI: 10.1017/s003118201600144x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The present study aims to evaluate the antiparasitic activity of active components from Cynanchum paniculatum against Ichthyophthirius multifiliis. The antiparasitic activities of two bioassay-guided fractionationated compounds from C. paniculatum identified as Cynatratoside-A and Cynanversicoside C, by comparing spectral data (NMR and ESI-MS) with literature values, were evaluated by in vitro assay. These showed that both could kill theronts of I. multifiliis at a concentration of 10·0 mg L-1, with the median effective concentration (EC50) values of 4·6 mg L-1 and 5·2 mg L-1 for Cynatratoside-A and Cynanversicoside C, respectively. Encysted tomonts were killed at concentrations of 8·0 mg L-1 with both compounds. In vivo experiments demonstrated that fish treated with both compounds at 15·0 mg L-1 carried significantly fewer parasites than controls (P < 0·05). There were no mortalities among treated fish group compared with 75% mortality of untreated fish. Cynatratoside-A and Cynanversicoside C are therefore potential candidate drugs for use against I. multifiliis.
Collapse
|
7
|
Li JL, Gao ZB, Zhao WM. Identification and Evaluation of Antiepileptic Activity of C21 Steroidal Glycosides from the Roots of Cynanchum wilfordii. JOURNAL OF NATURAL PRODUCTS 2016; 79:89-97. [PMID: 26716755 DOI: 10.1021/acs.jnatprod.5b00766] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Nine new C21 steroidal glycosides, named cynawilfosides A-I (1-9), along with 12 known compounds were isolated from the roots of Cynanchum wilfordii. The structures of the new compounds were elucidated by spectroscopic analysis and chemical methods. The five major components, cynawilfoside A (1), cynauricoside A (11), wilfoside C1N (16), wilfoside K1N (17), and cyanoauriculoside G (18), exhibited significant protection activity in a maximal electroshock (MES)-induced mouse seizure model with ED50 values of 48.5, 95.3, 124.1, 72.3, and 88.1 mg/kg, respectively.
Collapse
Affiliation(s)
- Jin-Long Li
- Department of Natural Product Chemistry and ‡Chinese Academy of Sciences Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, People's Republic of China
| | - Zhao-Bing Gao
- Department of Natural Product Chemistry and ‡Chinese Academy of Sciences Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, People's Republic of China
| | - Wei-Min Zhao
- Department of Natural Product Chemistry and ‡Chinese Academy of Sciences Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, People's Republic of China
| |
Collapse
|
8
|
Immunosuppressive C21 steroidal glycosides from the root of Cynanchum atratum. Fitoterapia 2015; 105:194-201. [DOI: 10.1016/j.fitote.2015.07.010] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Revised: 07/07/2015] [Accepted: 07/08/2015] [Indexed: 11/13/2022]
|
9
|
Aras M, Urfalı B, Serarslan Y, Ozgür T, Ulutaş KT, Urfalı S, Altaş M, Yılmaz N. Protective effects of minocycline against short-term ischemia-reperfusion injury in rat brain. Pediatr Neurosurg 2013; 49:172-8. [PMID: 24801142 DOI: 10.1159/000362202] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2013] [Accepted: 03/12/2014] [Indexed: 11/19/2022]
Abstract
The aim of this study was to assess the effects of minocycline on cerebral ischemia-reperfusion (I/R) injury in rats. The study was carried out on 24 male Wistar albino rats, weighing 200-250 g, which were divided into three groups: (i) control (n = 8), (ii) I/R (n = 8) and (iii) I/R + minocycline (n = 8). Minocycline was administrated at a dose of 90 mg/kg p.o. to the I/R group 48, 24 and 1 h before ischemia. Following bilateral exposure of the common carotid arteries by anterior cervical dissection and separation of the vagus nerve, I/R injury was performed by occlusion. Following reperfusion, malondialdehyde (MDA), superoxide dismutase, glutathione peroxidase and catalase levels in the blood and brain tissue, and creatine kinase (CK), CK-BB, lactate dehydrogenase (LDH), neuron-specific enolase (NSE) and protein S100β levels in the blood were measured and the histopathological changes were monitored. Regarding histopathological evaluation, symptoms of degeneration were significantly improved in the I/R + minocycline group compared to the I/R-only group. Statistical analysis of the biochemical parameters revealed significant differences in MDA (p < 0.001), nitric oxide (p < 0.05), CK (p < 0.05) and CK-MB (p < 0.05) levels between the I/R + minocycline group and the I/R group. According to the literature, the effect of minocycline is firstly assessed by LDH, CK-MB, NSE and S-100β analysis in addition to antioxidant status and histopathological analysis.
Collapse
Affiliation(s)
- Mustafa Aras
- Department of Neurosurgery, Tayfur Ata Sökmen Medical Faculty, Mustafa Kemal University, Hatay, Turkey
| | | | | | | | | | | | | | | |
Collapse
|