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  • 1
    ISBN: 9780815375500 , 0815375506
    Language: English
    Pages: xvii, 234 Seiten , Illustrationen , 15.8 cm
    Edition: First issued in paperback
    Series Statement: Routledge contemporary Asia series 44
    Series Statement: Routledge contemporary Asia series
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  • 2
    Language: English
    Pages: Online-Ressource (63 p)
    Edition: 2012 World Bank eLibrary
    Parallel Title: Zhang, Jian Does it Pay to Be a Cadre?
    Abstract: Recruiting and retaining leaders and public servants at the grass-roots level in developing countries creates a potential tension between providing sufficient returns to attract talent and limiting the scope for excessive rent-seeking behavior. In China, researchers have frequently argued that village cadres, who are the lowest level of administrators in rural areas, exploit personal political status for economic gain. Much existing research, however, compares the earnings of cadre and non-cadre households in rural China without controlling for unobserved dimensions of ability that are also correlated with success as entrepreneurs or in non-agricultural activities. The findings of this paper suggest a measurable return to cadre status, but the magnitudes are not large and provide only a modest incentive to participate in village-level government. The paper does not find evidence that households of village cadres earn significant rents from having a family member who is a cadre. Given the increasing returns to non-agricultural employment since China's economic reforms began, it is not surprising that the returns to working as a village cadre have also increased over time. Returns to cadre-status are derived both from direct compensation and subsidies for cadres and indirectly through returns earned in off-farm employment from businesses and economic activities managed by villages
    URL: Volltext  (Deutschlandweit zugänglich)
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  • 3
    ISSN: 0378-8741
    Language: English
    Titel der Quelle: Journal of ethnopharmacology : an interdisciplinary journal devoted to bioscientific research on indigenous drugs
    Publ. der Quelle: Shannon : Elsevier Science Ireland
    Angaben zur Quelle: Vol. 165 (2015), p. 127-140
    DDC: 610
    Abstract: Among the 49 species of the genus Dioscorea distributed in China, Dioscorea nipponica Makino (DN), Dioscorea panthaica Prain et Burkill (DP), and Dioscorea zingiberensis C. H. Wright (DZ) possess more or less similar traditional therapeutic actions, such as activating blood, relieving pain, and dispersing swelling; they have been used as folk medicine in China since 1950s. The modern pharmaceutical industry has developed these three species as herbal medicines that have been used for decades for treating cardiovascular diseases. However, there is no available information in the literature explaining how their chemical components are converted and interrelated in vivo to support their efficacies. The present study aimed to a) compare the metabolic profiles of saponins from DN, DP and DZ, which are considered to be their bioactive components, and b) to compare the changes in sustained levels of metabolites from rat biosamples. Total saponins (TS) from each of the three species, and four individual saponins, namely protodioscin (PD), pseudoprotodioscin (PSD), dioscin (DC) and diosgenin (DG), were given to rats by oral administration. Chemical profiles of the rats' plasma, urine and feces were monitored 1-36 h. A UPLC-QTOF-MS based method was performed to identify the absorbed constituents and their metabolic products in rat biosamples (i.e., blood, urine, and feces); the ratio of peak area of major saponins to that of internal standard was calculated and plotted versus time to characterize the sustained levels of saponins in biosamples. Totally 10 saponin-related compounds were detected in rat plasma, 10 in rat urine and 18 in rat feces. The results indicated that formation of diosgenin by desugarization was the main pathway by which steroidal glycosides were metabolized. Other types of bio-transformation were found among glycosides and aglycones, such as ring cyclization through loss of 26-O-glucosyl, substitution of β-D-glucopyranosyl for α-L-rhamnopyrannosyl, hydrogenation of diosgenin at 5(6)-double bond, and hydration of 20(22)-double bond. Generally, the metabolic profiles of DN and DP were shown to be quite similar, but different from that of DZ. However, some particular similarities and connections were found among these three TS. Diosgenin was one of the main metabolites commonly found in plasma and feces (excluding urine), from all groups receiving different TS, as well as individual saponins; this is likely to be one of the bioactive constituents playing an essential role in cardioprotective efficacy. Furostane-type saponins in TS of DN, DP or DZ, such as PD, protogracillin, parvifloside, protodeltonin and protobioside, showed fast absorption into blood (〈1h), but were maintained for a relatively short period (mostly〈8h), while the spirostane-type saponin and sapogenin (DC and DG, respectively), were absorbed into circulation more slowly (〉1h), but increased gradually and lasted longer (〉36h). These two patterns suggest that the therapeutic effect of these Dioscorea saponins is achieved through a complex, multi-step process over time. In addition, it appears that PD, PSD, and DC contained in DN and DP were transformed into certain glycosides originally found in DZ but not in DN or DP (protodeltonin, deltonin, trillin, and progenin II), which might indicate another linkage among these three species. These similarities and connections described above constitute evidence supporting similarity in efficacy of these three herbs from the perspective of metabolism. The UPLC-QTOF-MS based method is accurate and efficient for analyzing metabolic changes in rat biosamples over time.
    Note: Copyright: Copyright © 2015 Elsevier Ireland Ltd. All rights reserved.
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  • 4
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    In:  Journal of ethnopharmacology : an interdisciplinary journal devoted to bioscientific research on indigenous drugs Vol. 171 (2015), p. 335
    ISSN: 0378-8741
    Language: English
    Titel der Quelle: Journal of ethnopharmacology : an interdisciplinary journal devoted to bioscientific research on indigenous drugs
    Publ. der Quelle: Shannon : Elsevier Science Ireland
    Angaben zur Quelle: Vol. 171 (2015), p. 335
    DDC: 610
    Abstract: Jasminum lanceolarium Roxb is an important traditional Chinese medicine. Its stems and roots have been used for the treatment of rheumatism and fever while the leaves are used as an anti-inflammatory agent to relieve pain. In order to support its traditional Chinese medicinal uses, five animal models were designed and the anti-inflammatory and analgesic properties of the 70% EtOH-H2O extracts of J. lanceolarium (EJL) were investigated. Meanwhile, biochemical parameters such as cyclooxygenase-2 (COX-2), 5-lipoxygenase (5-LOX) in blood serum of rats exposed to acute (carrageenan) inflammation model were evaluated. At doses of 400 mg/kg, EJL exhibited higher anti-inflammation effect than that of indomethacin and better analgesic activity than that of aspirin (P〈0.001). Furthermore, eleven isolated compounds including six lignanoids (1, 2, 6, 7, 8, and 11) and five iridoids (3, 4, 5, 9, and 10) were isolated from the active extracts and showed significant anti-inflammatory activities with the IC50 values of 1.76-5.22 mg/mL, respectively, when testing their inhibitory effects on phospholipase A2 in vitro. The results demonstrated that the possible anti-inflammatory mechanisms might be attributed to inhibit the hydrolysis of membrane phospholipids, production on both COX-2 and 5-LOX, and then finally inhibit the release of prostaglandins (PGs), which suggested that EJL had a non-selective inhibitory effect on the release or actions of these mediators, and might be a dual LOX-COX inhibitor for the treatment of inflammation from the natural resource. The studies on the animals and the inflammatory mediators, along with the bioactive compounds presumed that the existences of iridoids and lignanoids could be response for their bioactivities of the whole plants.
    Note: Copyright: Copyright © 2015 Elsevier Ireland Ltd. All rights reserved.
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  • 5
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    In:  Journal of ethnopharmacology : an interdisciplinary journal devoted to bioscientific research on indigenous drugs Vol. 163 (2015), p. 173-191
    ISSN: 0378-8741
    Language: English
    Titel der Quelle: Journal of ethnopharmacology : an interdisciplinary journal devoted to bioscientific research on indigenous drugs
    Publ. der Quelle: Shannon : Elsevier Science Ireland
    Angaben zur Quelle: Vol. 163 (2015), p. 173-191
    DDC: 610
    Abstract: The plants in the genus Carpesium, which grow naturally in Asia and Europe, have long been used in traditional Chinese, Korean and Japanese medicines. The antipyretic, antimalarial, haemostatic, anti-inflammatory and detoxifying properties of their extracts enabled their use in the treatment of several diseases, such as fevers, colds, contusions, diarrhoea, mastitis, mumps, hepatitis, malaria, etc. This review summarises the state-of-the-art and comprehensive information surrounding its use as traditional medicine, phytochemistry, pharmacology, and toxicology to reveal the potential therapeutic effects of Carpesium plants and to establish a solid foundation for directing future research. The extensive reading and investigation were actualised by systematically searching the scientific literatures including Chinese, Korean and Japanese herbal classics, library catalogs and scientific databases (PubMed, Scopus, SciFinder and the Web of Science), were systematically searched for topics related to factors like the chemical constituents, pharmacognostic research and pharmacological effects of the Carpesium species. Carpesium plants have been studied extensively as traditional folk medicines in China, Korea and Japan all the time. In past, phytochemical research was the focal point of this genus, and the recent studies of the members of this genus have been focused on the pharmacological activity and potential therapeutic applications of these plants. The research performed revealed that 143 compounds including sesquiterpenoid lactone monomers, sesquiterpenoid lactone dimers, monoterpenes, diterpenoids, phenolic compounds, and several other type of compounds, were isolated and identified within this genus in recent years, and certain of these constituents had demonstrated to possess anti-inflammatory, anti-tumor, anti-plasmodial, anti-oxidant, anti-fungal and anti-bacterial effects. This review shows that approximately 50 active compounds possess therapeutic potential during the treatment of cancer, inflammatory, parasitosis, etc. However, apart from those bioactive molecules, a considerable part of compounds, including a lot of sesquiterpenes, and several other type of compounds that have been previously isolated but have not been tested biologically need to be further tested. Therefore, more pharmacological experiments should be focused on these untested chemical constituents. Additionally, another issue concerns that most pharmacological studies were only performed in vitro-based experiments, so additional in vivo tests in animal models are required to estimate their side effects for the safety approval of therapeutic applications. Finally, further studies through well controlled, double-blind clinical trials are required to re-evaluate their efficacious and possible side effects, and more pharmacological mechanisms on main active compounds will also be needed for illuminating correlations between ehnopharmacology and pharmacology in future.
    Note: Copyright: Copyright © 2015 Elsevier Ireland Ltd. All rights reserved.
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  • 6
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    In:  Journal of ethnopharmacology : an interdisciplinary journal devoted to bioscientific research on indigenous drugs Vol. 178 (2016), p. 155-171
    ISSN: 0378-8741
    Language: English
    Titel der Quelle: Journal of ethnopharmacology : an interdisciplinary journal devoted to bioscientific research on indigenous drugs
    Publ. der Quelle: Shannon : Elsevier Science Ireland
    Angaben zur Quelle: Vol. 178 (2016), p. 155-171
    DDC: 610
    Abstract: The plants in the genus Gleditsia, mainly distributed in central and Southeast Asia and North and South America, have been used as local and traditional medicines in many regions, especially in China, for the treatment of measles, indigestion, whooping, smallpox, arthrolithiasis, constipation, diarrhea, hematochezia, dysentery, carbuncle, etc. This present paper systemically reviews the miscellaneous information surrounding its traditional use, phytochemistry and pharmacology to provide opportunities and recommendations for the future research. The scientific literatures were systematically searched from scientific databases (PubMed, Scopus, Elsevier, SpringerLink, SciFinder, Google Scholar and others). In addition, the ethnopharmacological information on this genus was mainly acquired from Chinese and Korean herbal classics, and library catalogs. More than 60 compounds including triterpenes, sterols, flavonoids, alkaloids, phenolics and their derivatives were isolated from Gleditsia japonica Miq., Gleditsia sinensis Lam., Gleditsia caspica Desf. and Gleditsia triacanthos L. Among these compounds, triterpenoid saponins were the main constituents of Gleditsia species. Moreover, the crude extracts and purified molecules were tested, revealing diverse biological activities such as anti-tumor, anti-inflammatory, anti-allergic, anti-hyperlipidemic, analgesic, antimutagenic, antioxidant, anti-HIV, antibacterial, antifungal activities, etc. Among these biological studies, the possible mechanisms of antitumor action are stressed in this review, and these include causing cytotoxicity to cancer cells, inhibition of proliferation of cancer cells by affecting their growth, regeneration and apoptosis, inhibition of basic fibroblast growth factor (bFGF) and nitric oxide (NO), modulation of the oncogenic expression and telomerase activity results, inhibition of the expression of pro-angiogenic proteins, as well as down-regulation of intra/extracellular proangiogenic modulators, etc. On the basis of preliminary research on Gleditsia genus it could be stated that saponins investigations may be more promising in future. Although 32 compounds of 67 identified compounds were saponins, modern pharmacological research on saponins were not a priority in Gleditsia species. Therefore, more bioactive experiments and in-depth mechanisms of action are required for elucidating their roles in physiological systems. Moreover, the present review also highlights that analgesic, anti-tumor and anti-HIV activities should have priority in saponins research. Additionally, it is imperative to explore more structure-activity relationships and possible synergistic actions of triterpenoid saponins for revaluating their pharmacological activities.
    Note: Copyright: Copyright © 2015 Elsevier Ireland Ltd. All rights reserved.
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  • 7
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    In:  Journal of ethnopharmacology : an interdisciplinary journal devoted to bioscientific research on indigenous drugs Vol. 178 (2016), p. 58-65
    ISSN: 0378-8741
    Language: English
    Titel der Quelle: Journal of ethnopharmacology : an interdisciplinary journal devoted to bioscientific research on indigenous drugs
    Publ. der Quelle: Shannon : Elsevier Science Ireland
    Angaben zur Quelle: Vol. 178 (2016), p. 58-65
    DDC: 610
    Abstract: Anoectochilus roxburghii (Wall.) Lindl. 1832 is an herbal medicine used to treat diabetes in China. Considering that Anoectochilus roxburghii polysaccharose (ARP) is the main constituent of Anoectochilus roxburghii, the present study is aimed to investigate the renal protection of ARP and its possible mechanism in diabetic mice. Institute of Cancer Research (ICR) mice were induced to diabetes with high-fat diet (HFD) and low-dose streptozotocin (STZ). ARP (100, 300mg/kg) was orally administrated to diabetic mice once a day for consecutive 15 days. The fasting glucose level, expressions of key proteins of p38 MAP kinase cascade, inflammatory factors, fibronectin (FN) and the activities of matrix metalloproteinases (MMPs) were measured. Furthermore, the histological examination of the separated kidneys was also carried out. Compared with the diabetic mice, ARP administration induced a significant decrease in blood glucose level and improved the body weight of diabetic mice. In addition, ARP inhibited the expression of renal p38 MAP kinase cascade and its downstream inflammatory factors including tumor necrosis factor-α (TNF-α), monocyte chemoattractant protein-1 (MCP-1), FN as well as MMP2/9. Moreover, the histological examination showed an apparent reduction of mesangial matrix deposition and damage of microvascular structure after ARP administration. The protective effects of ARP on diabetic renal damage may be attributed to the inhibition of p38 MAP kinase cascade and then attenuating the inflammatory responses and high glucose-induced renal damage.
    Note: Copyright: Copyright © 2015 Elsevier Ireland Ltd. All rights reserved.
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  • 8
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    In:  Journal of ethnopharmacology : an interdisciplinary journal devoted to bioscientific research on indigenous drugs Vol. 178 (2016), p. 115-124
    ISSN: 0378-8741
    Language: English
    Titel der Quelle: Journal of ethnopharmacology : an interdisciplinary journal devoted to bioscientific research on indigenous drugs
    Publ. der Quelle: Shannon : Elsevier Science Ireland
    Angaben zur Quelle: Vol. 178 (2016), p. 115-124
    DDC: 610
    Abstract: Huang-Lian-Jie-Du-Decoction (HLJDD) is a Traditional Chinese Medicine (TCM) clinical prescription noted for its neuroprotective effects. The total alkaloids, flavonoids, and iridoids are the main active components of HLJDD. In the present study we explored the possible effects of the total alkaloids, flavonoids, and iridoids from HLJDD on behavioral recovery and cortical neurogenesis after stroke. The stroke model was induced by permanent middle cerebral artery occlusion (pMACO). The total alkaloids (44mg/kg), flavonoids (50mg/kg), and iridoids (80mg/kg) from HLJDD were orally administered for 2h after stroke and daily thereafter. Neurological function was assessed and then rats were sacrificed 7 days after pMACO. Following repeated intraperitoneal injections of the cell proliferation - specific marker 5-bromodeoxyuridine (BrdU) after stroke induction, precursor cell proliferation and differentiation was monitored by immunofluorescent staining. The levels of relevant proteins were determined by western blotting and the mRNA expressions were assessed by quantitative real time-polymerase chain reaction (qRT-PCR). Total alkaloids, flavonoids and iridoids from HLJDD showed improved functional outcome after brain ischemia. The total alkaloids and iridoids increased number of BrdU-positive cells and enhanced neuronal differentiation in the cortex. Alkaloids-enhanced neurogenesis might be associated with increased VEGF, Ang-1, and Ang-2 protein expression. And the neuroproliferative effect of alkaloids was partially correlated with increased phosphorylation of AKT, and GSK-3β. Flavonoids treatment was found to promote differentiation of cortical precursor cells into neuronal but not glial cells, which may be at least attributable to the regulation of AKT, GSK-3β mRNA and Ang-1 protein levels. Total alkaloids, iridoids and flavonoids from HLJDD promoted functional recovery likely via enhancing cortical neurogenesis and thus have potential as a treatment for ischemic brain injury.
    Note: Copyright: Copyright © 2015 Elsevier Ireland Ltd. All rights reserved.
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  • 9
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    In:  Journal of ethnopharmacology : an interdisciplinary journal devoted to bioscientific research on indigenous drugs Vol. 164 (2015), p. 180-185
    ISSN: 0378-8741
    Language: English
    Titel der Quelle: Journal of ethnopharmacology : an interdisciplinary journal devoted to bioscientific research on indigenous drugs
    Publ. der Quelle: Shannon : Elsevier Science Ireland
    Angaben zur Quelle: Vol. 164 (2015), p. 180-185
    DDC: 610
    Abstract: Anoectochilus roxburghii is a traditional Chinese herb used for treatment of diabetes and some other diseases. Anoectochilus roxburghii polysaccharose (ARP) is the main constituent of Anoectochilus roxburghii. The present study aimed to investigate the antidiabetic effects of ARP in diabetic mice induced by high-fat diet and streptozotocin. Two doses of ARP (100 or 300 mg/kg) were administered once daily for 25 days to diabetic mice. To evaluate the antidiabetic effects of ARP, the fasting glucose levels, aspartate aminotransferase (AST), alanine transaminase (ALT) and superoxide dismutase (SOD) activities, malondialdehyde (MDA) content, triglyceride (TG), total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C) and liver glycogen were examined. Furthermore, histological examinations were carried out on the separated pancreas and liver of mice. Compared with untreated diabetic mice, ARP (100 or 300 mg/kg) caused a significant decrease in blood glucose levels, activities of AST and ALT, and MDA contents, and a significant increase in liver glycogen contents, SOD activities, thymus index and spleen index. Simultaneously, the alteration in lipid metabolism was partially attenuated as evidenced by decreased serum TC, TG and LDL-C concentrations in diabetic mice. In addition, histological examinations showed that administration of ARP (100 or 300 mg/kg) significantly attenuated the pathologic lesions in pancreas and liver of diabetic mice, and improved pancreas and liver function. The antidiabetic activity of ARP may be attributed to the improvement of glucose and lipid metabolism, increase of immune protection and reduction of oxidative stress.
    Note: Copyright: Copyright © 2015 Elsevier Ireland Ltd. All rights reserved.
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  • 10
    ISSN: 0378-8741
    Language: English
    Titel der Quelle: Journal of ethnopharmacology : an interdisciplinary journal devoted to bioscientific research on indigenous drugs
    Publ. der Quelle: Shannon : Elsevier Science Ireland
    Angaben zur Quelle: Vol. 176 (2015), p. 17-26
    DDC: 610
    Abstract: Cyclocarya paliurus Batal., native only to China, is widely consumed as a Chinese traditional folk medicine for the prevention and treatment of hyperlipidemia, obesity, and diabetes. The aim of the study is to investigate the cholesterol-lowering effect and potential mechanisms of different polar extracts from Cyclocarya paliurus leaves in mice fed with high-fat-diet. Cyclocarya paliurus leaves extracts were orally administered to diet-induced hyperlipidemic mice for 4 weeks. Simvastatin was used as a positive control. Body weight, food intake, histopathology of liver and adipose tissues, hepatic and renal function indices, lipid profiles in the serum and liver were evaluated. Total bile acid concentrations of the liver and feces were also measured. Furthermore, the activities and mRNA expression of cholesterol metabolism-related enzymes including 3-hydroxy-3-methylglutaryl-coenzyme A (HMG-CoA) reductase, cholesterol 7α-hydroxylase (CYP7A1) and acyl-CoA cholesterol acyltransferase 2 (ACAT2) in the livers of the mice were analyzed. LC-MS detection was performed to identify the components in the active fraction of Cyclocarya paliurus extracts. Different Cyclocarya paliurus polar extracts, especially ChE reduced the levels of serum total cholesterol (TC), triglycerides (TG), low-density lipoprotein cholesterol (LDL-C) and hepatic TC and TG, enhanced the level of serum high-density lipoprotein cholesterol (HDL-C), restored hepatic and renal function indices and histomorphology. HMG-CoA reductase activity and mRNA expression were decreased, while CYP7A1 activity and mRNA expression as well as the level of fecal and hepatic bile acid were increased by ChE. LC-MS analysis of ChE revealed the presence of six main triterpenoids, which might be responsible for its antihyperlipidemic bioactivity. Evidently ChE possesses the best antihyperlipidemic activity, and the cholesterol-lowering effect is at least partly attributed to its role in promoting the conversion of cholesterol into bile acids by upgrading the activity and mRNA expression of CYP7A1 and inhibiting those of HMG-CoA reductase to lower the cholesterol biosynthesis.
    Note: Copyright: Copyright © 2015 Elsevier Ireland Ltd. All rights reserved.
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