1.Comparison of the profiles of chlorogenic acids and their derivatives from three Chinese traditional herbs by LC-MSn
Zheng WANG ; CLIFFORD Michael N.
Acta Pharmaceutica Sinica 2008;43(2):185-190
To investigate the chlorogenic acids resources in Eucommia ulmoides Olive leaves, Lonicera japonica Thunb. leaves and Houttuynla cordata Thunb. leaves, methanolic extracts of these three materials have been analysed qualitatively for chlorogenic acids and their derivatives by structure-diagnostic LC-MSn. Three monocaffeoylquinic acids (3-CQA, 4-CQA, 5-CQA) were detected. 5-CQA dominated this subgroup in Eucommia ulmoides Olive and Lonicera japonica Thunb. leaves, but 3-CQA and 4-CQA dominated this subgroup of chlorogenic acids in the leaves of Houttuynla cordata Thunb. Caffeoylquinic acid-glycosides were detected for the first time from Eucommia ulmoides leaves. 5-FQA was found in Lonicera japonica Thunb. leaves, and 3-FQA and 4-pCoQA have been identified in Houttuynla cordata Thunb. This is the first report of the chlorogenic acid profile in Houttuynla cordata Thunb. The comparatively unusual profile of caffeoylquinic acids in Houttuynla cordata Thunb. makes it a convenient source of 3-CQA and 4-CQA that are not commercially available.
3. Therapeutic effects of resveratrol on OVA-induced allergic rhinitis in mice and immune mechanisms
Dong-Cai LI ; Peng WANG ; Sheng LI ; Qiao-Lian YU ; Jian-Pian LAN ; Bao-Hui CHENG
Chinese Pharmacological Bulletin 2021;37(2):215-220
Aim To investigate the curative effects of resveratrol on OVA induced allergic rhinitis in mice and the underlying immune mechanisms. Methods Balb/c mice (female, 6 weeks) were divided randomly into normal control ( NC) group, allergic rhinitis (AR) group, high dose resveratrol treatment group (RH), low dose resveratrol treatment group (RL), and dexamethasone treatment group ( Dex). RL, RH and Dex group were oral administered with resveratrol 30 mg • kg"1, resveratrol 100 mg • kg"1 and dexamethasone 10 mg • kg"1, respectively. After the treat-ment , the sneezing and nasal rubbing behaviors of mice in all the group were recorded and HE was performed to assess the inflammatory cell infiltration in nasal tissues. The sera levels of allergic cytokines were determined with ELISA assay. The percentage of CD4+ GA- TA3 + T cells in spleen of each group was further recorded by flow cytometry. Results Compared with AR group, treatment with resveratrol (100 mg - kg"1) reduced the sneezing and nasal rubbing behaviors signifi-cantly and improved inflammatory cell infiltration in nasal tissues. The up-regulated sera levels of IL-4, IL- 13 and OVA-sIgE in AR group were reversed by RH, and ratios CD4+ GATA3 + Th2 cells in spleen of RH were also down-regulated parallelly. Conclusions RH treatment could improve the allergic related symptoms of OVA-induced allergic rhinitis, which is associated with down-regulated sera levels of IL-4, IL-13 and OVA-sIgE and ratios of CD4+ GATA3 + Th2 cells in spleen of mouse model.
4.Using magnetoencephalography to investigate brain activity during high frequency deep brain stimulation in a cluster headache patient
NJ Ray ; ML Kringelbach ; N Jenkinson ; SLF Owen ; P Davies ; S Wang ; N De Pennington ; PC Hansen ; J Stein ; TZ Aziz
Biomedical Imaging and Intervention Journal 2007;3(1):1-6
Purpose: Treatment-resistant cluster headache can be successfully alleviated with deep brain stimulation (DBS) of the posterior hypothalamus [1]. Magnetoencephalography (MEG) is a non-invasive functional imaging technique with
both high temporal and high spatial resolution. However, it is not known whether the inherent electromagnetic (EM)
noise produced by high frequency DBS is compatible with MEG.
Materials and methods: We used MEG to record brain activity in an asymptomatic cluster headache patient with a
DBS implanted in the right posterior hypothalamus while he made small movements during periods of no stimulation, 7
Hz stimulation and 180 Hz stimulation.
Results: We were able to measure brain activity successfully both during low and high frequency stimulation. Analysis of the MEG recordings showed similar activation in motor areas in during the patient’s movements as expected. We also observed similar activations in cortical and subcortical areas that have previously been reported to be associated
with pain when the patient’s stimulator was turned on or off [2,3].
Conclusion: These results show that MEG can be used to measure brain activity regardless of the presence of high
frequency deep brain stimulation.
5.Biodegradability of leachates from Chinese and German municipal solid waste
E. SELIC ; Chi WANG ; BOES N., HERBELL J.D.
Journal of Zhejiang University. Science. B 2007;8(1):14-19
The quantitative and qualitative composition of Chinese municipal solid waste (MSW) differs significantly from German waste. The focus of this paper is on whether these differences also lead to dissimilar qualities of leachates during storage or landfilling. Leachates ingredients determine the appropriate treatment technique. MSW compositions of the two cities Guilin (China) and Essen (Germany), each with approx. 600000 inhabitants, are used to simulate Chinese and German MSW types. A sequencing batch reactor (SBR) is used, combining aerobic and anaerobic reaction principles, to test the biodegradability of leachates. Leachates are tested for temperature, pH-value, redox potentials, and oxygen concentration. Chemical oxygen demand (COD) values are determined. Within 8 h, the biodegradation rates for both kinds of leachates are more than 90%. Due to the high organic content of Chinese waste, the degradation rate for Guilin MSW leachate is even higher, up to 97%. The effluent from SBR technique is suitable for direct discharge into bodies of water.
6.Comparison of the profiles of chlorogenic acids and their derivatives from three Chinese traditional herbs by LC-MSn.
Zheng WANG ; Michael N CLIFFORD
Acta Pharmaceutica Sinica 2008;43(2):185-190
To investigate the chlorogenic acids resources in Eucommia ulmoides Olive leaves, Lonicera japonica Thunb. leaves and Houttuynla cordata Thunb. leaves, methanolic extracts of these three materials have been analysed qualitatively for chlorogenic acids and their derivatives by structure-diagnostic LC-MSn. Three monocaffeoylquinic acids (3-CQA, 4-CQA, 5-CQA) were detected. 5-CQA dominated this subgroup in Eucommia ulmoides Olive and Lonicera japonica Thunb. leaves, but 3-CQA and 4-CQA dominated this subgroup of chlorogenic acids in the leaves of Houttuynla cordata Thunb. Caffeoylquinic acid-glycosides were detected for the first time from Eucommia ulmoides leaves. 5-FQA was found in Lonicera japonica Thunb. leaves, and 3-FQA and 4-pCoQA have been identified in Houttuynla cordata Thunb. This is the first report of the chlorogenic acid profile in Houttuynla cordata Thunb. The comparatively unusual profile of caffeoylquinic acids in Houttuynla cordata Thunb. makes it a convenient source of 3-CQA and 4-CQA that are not commercially available.
Chlorogenic Acid
;
analogs & derivatives
;
analysis
;
Chromatography, Liquid
;
methods
;
Eucommiaceae
;
chemistry
;
Lonicera
;
chemistry
;
Molecular Structure
;
Plant Leaves
;
chemistry
;
Plants, Medicinal
;
chemistry
;
Saururaceae
;
chemistry
;
Spectrometry, Mass, Electrospray Ionization
;
methods
7.Diffusion-Weighted MRI for the Initial Viability Evaluation of Parasites in Hepatic Alveolar Echinococcosis: Comparison with Positron Emission Tomography
Jianjun ZHENG ; Jing WANG ; Jianqing ZHAO ; Xianyun MENG
Korean Journal of Radiology 2018;19(1):40-46
OBJECTIVE: More than 70% of hepatic alveolar echinococcosis (HAE) are inoperable. Thus, long-term, or even life-long, pharmacological treatment with benzimidazoles is necessary. For effective treatment, it is of great importance to employ imaging techniques to detect and monitor the non-resectable parasitic viability. Therefore, this study aimed to evaluate diffusion-weighted imaging (DWI) in assessing the viability of HAE in comparison to 18-fluoro-deoxyglucose (18F-FDG) positron emission tomography, combined with computed tomography (PET/CT). MATERIALS AND METHODS: Positron emission tomography, computed tomography and DWI (b-values: 0, 800 s/mm2) were retrospectively analysed in eight patients with clinically-verified HAE to, generate the apparent diffusion coefficient (ADC) map. The activity of HAE lesions in both techniques were determined independently by two radiologists according to the following standard: (+), marked focally or perilesionally increased FDG uptake/high signal intensity; (−), a hepatic defect without FDG uptake/no high signal intensity. Every lesion's maximum standardized uptake value (SUV(max)) on the PET/CT images and mean ADC values on the parametric ADC maps were measured respectively. Results of PET/CT and DWI were compared on a per-lesion-basis. Pearson's correlation coefficient was assessed for statistical analysis. RESULTS: A total of 14 HAE lesions were detected. Eight lesions (diameter 3–15 cm) showed perilesional hyper-signal intensity on DWI. This was visualised on PET/CT as increased FDG uptake. They mainly existed in the lesion's border with normal liver parenchyma. Five lesions (diameter < 2 cm) were detected as nodular hyperintensity on DWI and a ‘hot spot’ on PET/CT in the same distribution. One patient, who had received oral drug therapy for three years showed significantly decreased perilesional hyperintensity on the DWI and a hepatic defect without any FDG uptake on PET/CT. Pearson's correlation coefficient indicated a significant inverse correlation of the ADC and the SUV(max) (r = −0.67, p < 0.001). CONCLUSION: Diffusion-weighted imaging is capable of offering information on visually detecting the HAE lesions' viability and may be useful for routine application in the initial diagnosis of HAE.
Benzimidazoles
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Diagnosis
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Diffusion
;
Drug Therapy
;
Echinococcosis
;
Echinococcosis, Hepatic
;
Electrons
;
Humans
;
Liver
;
Magnetic Resonance Imaging
;
Parasites
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Positron-Emission Tomography and Computed Tomography
;
Positron-Emission Tomography
;
Retrospective Studies
8.Study on TCM syndromes of liver failure and yang-supporting therapy
Dewen MAO ; Nong TANG ; N WANG
Journal of Clinical Hepatology 2015;31(1):48-
This paper reviews traditional Chinese medicine (TCM) physicians′understanding of liver failure including its TCM causes, mechanisms, positions, and syndrome differentiation in various dynasties. The results suggest that modern researchers agree with ancient physicians on these aspects of liver failure. Based on achievements of ancient TCM physicians, modern researchers have further developed and improved their understanding of TCM causes, mechanisms, positions, and syndrome differentiation of liver failure. Moreover, this paper discusses the treatment of chronic liver failure with yang-supporting therapy, which provides a novel perspective and method for treating chronic liver failure.
9.Study on Anti-inflammatory Mechanism of Couplet Medicine of Notopterygium incisum -Angelica pubescens Based on Network Pharmacology
Kaixuan DUAN ; Yuewen LI ; Hebo LIU ; Bolong WANG
China Pharmacy 2019;30(9):1241-1246
OBJECTIVE: To predict the anti-inflammatory active components and mechanism of couplet medicine of Notopterygium incisum-Angelica pubescens. METHODS: According to the principle of oral bioavailability≥30% and drug- likeness≥0.18, active components of N. incisum and A. pubescens were screened; TCMSP was used to predict and screen the potential target of them. Using “Anti-inflammatory” as keyword, inflammatory related target genes were retrieved from human gene database Genecards. Common target was screened by mapping the target genes of active ingredients from couplet medicine of N. incisum-A. pubescens. The active ingredient-target network was established by using Cytoscape 3.5.1 software. The screened targets were used to construct the target protein interaction (PPI) network on the STRING V 10.5 platform. Its anti-inflammatory mechanism was studied by KEGG signaling pathway and GO biological enrichment analysis. RESULTS: Totally 15 active components such as coumarin, beta-sitosterol, ammidin, nodakenin were selected from couplet medicine of N. incisum-A. pubescens. Acting on 49 targets such as transcription factor AP-1, PI3-kinase subunit gamma, estrogen receptor, they mainly involved 19 signaling pathways such as hepatitis B and cell apoptosis, and were involved in 47 biological processes such as regulating inflammatory response and prostaglandin biosynthesis. CONCLUSIONS: The anti-inflammatory mechanism of active components of couplet medicine of N. incisum-A. pubescens on multi-target, multi-channel and multi-biological processes is predicted, and it points out the direction for further anti-inflammatory mechanism study.
10.A comparative study of the anti-fatigue activity of extracts from different parts of Cistanche tubulosa (Schenk) Wight
Jianteng Dong ; Junjun Li ; Yizhou Liu ; Lingwen Cui ; Xiangning Liu ; Gang Wang ; Qixin Wang ; David N Criddle ; Pengfei Tu ; Chun Li
Journal of Traditional Chinese Medical Sciences 2024;11(2):222-231
Objective:
To evaluate the anti-fatigue effects of different extracts from Cistanche tubulosa (Schenk) Wight (C. tubulosa, Rou Cong Rong), focusing on central and exercise-induced fatigue in mice. This study investigated the pharmacological effects of the total oligosaccharides, polysaccharides, and phenylethanoid glycosides (CPhGs) extracted from C. tubulosa.
Methods:
Models of sleep deprivation and forced swimming fatigue were established to simulate central and exercise-induced fatigue. The mice were treated with different extracts of C. tubulosa, and their effects were assessed using behavioral tests to measure exercise capacity, learning, and memory function. Biochemical analyses were performed to evaluate the changes in serum and brain neurotransmitter levels, liver and muscle glycogen storage, and various fatigue-related biomarkers.
Results:
This study found that treatment with C. tubulosa extract improved exercise capacity, learning, and memory in mice. Total oligosaccharides from C. tubulosa enhanced adrenocorticotropic hormone, cholinesterase, and thyroid-stimulating hormone levels, reduced cortisol levels in central fatigue models, and ameliorated biochemical markers of exercise-induced fatigue, including lowering lactic acid, blood urea nitrogen, and malondialdehyde levels. Among the tested extracts, the total oligosaccharides showed the most comprehensive anti-fatigue effects.
Conclusion
The anti-fatigue effects of C. tubulosa, particularly those of its total oligosaccharides, are pronounced in both central and exercise-induced fatigue. These effects are mediated by the regulation of neurotransmitter levels, enhancement of glycogen storage, and improvement of antioxidant enzyme activity, suggesting potential therapeutic benefits in fatigue-related conditions.