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1.
Chin J Physiol ; 65(5): 250-257, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36308080

RESUMO

This study aimed to investigate the effects of triiodothyronine (T3)- or dopamine (Dp)-supplemented diets on oxygen consumption by Na+, K+-ATPase activity in broiler chicks. Five groups, each with twenty-four 6-day-old chicks, randomly received one of the five dietary treatments: (1) Basal diet (commercial broiler rations with 23.0% crude protein and 3,133 kcal metabolizable energy/kg) or CON, (2) basal diet plus 0.7 µmol Dp/kg diet or Dp0.7, (3) basal diet plus 2.4 µmol Dp/kg diet or Dp2.4, (4) basal diet plus 1.9 µmol T3/kg diet or T1.9, and (5) basal diet plus 3.8 µmol T3/kg diet or T3.8 from 6 to 14 days of age. There were four replicates per treatment and 120 birds in total. At 14 days of age, three chicks from each replicate of each treatment were pooled into a flock and fed commercial broiler diets until 7 weeks of age. Compared to CON group, birds fed with T3-supplemented diets had lower thyroid, abdominal fat pad, gizzard and pancreas weight, and heavier heart weight adjusted for fasted body weight. Chicks with T1.9 had lower ileal densities at 14 day old compared with those in Dp groups or CON. Chicks with T3.8 exhibited greater duodenal and jejunal O2 consumptions as well as ouabain-sensitive O2 consumptions of jejunum and small intestine (duodenum, jejunum, and ileum) by 46.5%, 58.3%, 40.6%, and 26.4% increases, than those in CON. Partial correlation analysis revealed that the weight and length of the small intestine were negatively correlated with body weight gain. Oxygen consumption in the various small intestinal segments was negatively correlated with their respective densities (mg/mm2). In conclusion, a greater oxygen requirement for maintaining ouabain-sensitive respiration (Na+-K+-ATPase) in the intestine limits energy availability to support gastrointestinal tract growth and, thereby, may result in lower body weight gain.


Assuntos
Fenômenos Fisiológicos da Nutrição Animal , Galinhas , Animais , Adenosina Trifosfatases , Ração Animal/análise , Peso Corporal , Dieta/veterinária , Suplementos Nutricionais , Dopamina , Intestino Delgado , Ouabaína , Consumo de Oxigênio , Tri-Iodotironina
2.
Chin J Integr Med ; 28(5): 387-393, 2022 May.
Artigo em Inglês | MEDLINE | ID: mdl-34913149

RESUMO

OBJECTIVE: To assess the effectiveness of Jiuwei Zhuhuang Powder (JWZH), a Tibetan patent medicine in treating upper respiratory tract infection (URTI) associated cough in children. METHODS: The study was a multicenter, randomized, open-label, controlled trial. A total of 142 children aged 2 to 14 years old, with URTI-associated cough within 48 h of onset, were randomly assigned to two groups at a 1:1 ratio by computer-generated randomization sequence. Children were treated with JWZH (1 to 1.5 g, twice to thrice daily) in the treatment group or conventional treatment (Pediatric Paracetamol, Artificial Cow-bezoar and Chlorphenamine Maleate Granules, 0.25 to 1 g, thrice daily) in the control group for 5 days. The primary endpoints were the time to cough resolution and 4-day cough resolution rate. The secondary endpoints were the daily improvement in symptom scores and cough resolution rate during the study period. RESULTS: A total of 138 children were included in the intention-to-treat analysis, with 71 cases in the treatment group and 67 cases in the control group. Compared with the conventional treatment, the children receiving JWZH had a shorter time to cough resolution [hazard ratio, 2.10; 95% confidence interval (CI), 1.29-3.40; P=0.003]. The median time to cough resolution for children receiving JWZH was shorter than that of the conventional treatment (2 days vs. 3 days; P<0.001). The 4-day cough resolution rate in the JWZH group was higher than that of the control group (94.4% vs. 74.6%; risk difference: 19.8%, 95% CI: 8.1%-31.5%; relative risk: 1.265, 95% CI: 1.088-1.470; P=0.001). There were no statistically significant differences in the improvement of other symptoms caused by URTI (P>0.05). Adverse events was reported in 5.6% (4/71) and 4.5% (3/67) in participants of JWZH and PPACCM groups (P>0.05), respectively, which were all mild and resolved without treatment. CONCLUSION: JWZH seemed to be a safe and effective therapy for URTI-associated cough in children. (Trial registration No. ChiCTR2000039421).


Assuntos
Tosse , Infecções Respiratórias , Criança , Tosse/tratamento farmacológico , Medicamentos de Ervas Chinesas , Humanos , Medicamentos sem Prescrição , Pós , Infecções Respiratórias/tratamento farmacológico
3.
ACS Biomater Sci Eng ; 6(1): 664-672, 2020 01 13.
Artigo em Inglês | MEDLINE | ID: mdl-33463219

RESUMO

Local resection or ablation remains an important approach to treat drug-resistant central neurological disease. Conventional surgical approaches are designed to resect the diseased tissues. The emergence of photothermal therapy (PTT) offers a minimally invasive alternative. However, their poor penetration and potential off-target effect limit their clinical application. Here, polydopamine nanoparticles (PDA-NPs) were prepared and characterized. Studies were performed to evaluate whether PDA-NPs combined with near-infrared (NIR) light can be used to ablate deep brain structures in vitro and in vivo. PDA-NPs were prepared with a mean diameter of ∼150 nm. The particles show excellent photothermal conversion efficiency. PDA-NPs did not show remarkable cytotoxicity against neuronal-like SH-SY5Y cell lines. However, it can cause significant cell death when combined with NIR irradiation. Transcranial NIR irradiation after PDA-NPs administration induced enhanced local hyperthermia as compared with NIR alone. Local temperature exceeded 60 °C after 6 min of irradiation plus PDA while it can only reach 48 °C with NIR alone. PTT with PDA (10 mg/mL, 3 µL) and NIR (1.5 W/cm2) can ablate deep brain structures precisely with an ablation volume of ∼6.5 mm3. Histological analysis confirmed necrosis and apoptosis in the targeted area. These results demonstrate the potential of NP-assisted PTT for the treatment against nontumorous central neurological diseases.


Assuntos
Nanopartículas , Fototerapia , Encéfalo/cirurgia , Indóis , Polímeros
4.
Ann Bot ; 121(3): 561-569, 2018 03 05.
Artigo em Inglês | MEDLINE | ID: mdl-29309538

RESUMO

Background and Aims: Soil nutrient heterogeneity has been proposed to influence competitive outcomes among different plant species. Thus, it is crucial to understand the effects of environmental heterogeneity on competition between exotic invasive and native species. However, the effects of soil nutrient heterogeneity on the competition between invasive and native plants have rarely been linked to root foraging behaviour. Methods: In this study, a competition experiment was performed with two invasive-native species pairs (BP-VC, Bidens pilosa vs. Vernonia cinerea; MM-PS, Mikania micrantha vs. Paederia scandens) grown under homogeneous and heterogeneous conditions in a common greenhouse environment. Root activity was assessed by determining the amount of strontium (Sr) taken up by the shoot of each species. Key Results: The invasive species exhibited a greater foraging scale, whereas the native species exhibited a higher foraging precision. A trade-off between foraging scale and precision was observed within each pair of invasive-native species. Compared with soil homogeneity, soil heterogeneity significantly increased the biomass of the two invasive species, B. pilosa and M. micrantha, under competitive conditions. Within each pair, the invasive species exhibited greater relative competitive ability with respect to shoot mass, and considerably more Sr taken up by the invasive species compared with the native species. The Sr acquisition results indicate that nutrient-poor conditions may facilitate the competitive ability of the native species V. cinerea, whereas M. micrantha may possess a stronger competitive ability regardless of soil nutrient conditions. Conclusion: Soil nutrient heterogeneity has the potential to promote the invasion of these two exotic species due to their larger foraging scale, stronger competitive ability and greater root activity relative to their counterpart native species. The present work highlights the importance of soil heterogeneity in plant invasion, particularly with regards to root foraging traits and competition between invasive and native plants.


Assuntos
Bidens/crescimento & desenvolvimento , Espécies Introduzidas , Mikania/crescimento & desenvolvimento , Rubiaceae/crescimento & desenvolvimento , Vernonia/crescimento & desenvolvimento , Ecossistema , Nutrientes/metabolismo , Raízes de Plantas/crescimento & desenvolvimento , Solo
5.
Biosci Rep ; 37(6)2017 12 22.
Artigo em Inglês | MEDLINE | ID: mdl-29162668

RESUMO

The present study is designed to determine whether Huai Qi Huang has immunoregulatory effects on the (helper T (Th)) Th1/Th2 and regulatory T cell (Treg)/Th17 balance in ovalbumin (OVA)-induced asthma model mice. Asthma model mice were constructed by OVA treatment and Huai Qi Huang was administered. The amount of migrated inflammatory cells in the bronchoalveolar lavage fluid (BALF) from the OVA mice was counted. The total IgE in the sera was detected by the IgE ELISA kit. Cell suspensions from the lung were stained with antibodies specific for CD4 and the master transcription factors for Th1 (T-box expressed in T cells (T-bet)), Th2 (GATA-binding protein 3 (Gata-3)), Th17 (retinoic acid related orphan receptor γt (RORγt)), and Treg (forkhead box p3 (Foxp3)). The left lobe of the lung was used to prepare a single-cell suspension for flow cytometry to determine whether Huai Qi Huang influenced CD4+ T-cell subsets. Histological analyses were performed by using Hematoxylin and Eosin staining. The mRNA expression levels of the transcription factors were detected by using qRT-PCR. Huai Qi Huang inhibited infiltration of inflammatory cells into the lung, reduced influx of eosinophils (EOSs), lymphocytes (LYMs), neutrophils (NEUs), and macrophages (MACs) in the BALF, and decreased IgE in the serum in OVA-treated mice. Huai Qi Huang could regulate Th1/Th2 and Treg/Th17 via the re-balance of cytokine profiles and change the mRNA expression levels of the transcription factors, T-bet/Gata-3 and Foxp3/RORγt in OVA-treated mice. Our results showed that Huai Qi Huang could correct the imbalance of Th1/Th2 and Treg/Th17 in OVA-induced asthma model mice, indicating its effects on inhibiting the development and severity of asthma.


Assuntos
Asma/tratamento farmacológico , Medicamentos de Ervas Chinesas/administração & dosagem , Equilíbrio Th1-Th2/efeitos dos fármacos , Animais , Asma/induzido quimicamente , Asma/imunologia , Asma/patologia , Líquido da Lavagem Broncoalveolar/imunologia , Modelos Animais de Doenças , Humanos , Camundongos , Neutrófilos/efeitos dos fármacos , Neutrófilos/imunologia , Ovalbumina/toxicidade , Linfócitos T Reguladores/efeitos dos fármacos , Linfócitos T Reguladores/imunologia , Células Th17/efeitos dos fármacos , Células Th17/imunologia
6.
Taiwan J Obstet Gynecol ; 56(3): 306-311, 2017 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-28600038

RESUMO

OBJECTIVE: Type 1 diabetes is an autoimmune disease that destroys islet cells and results in insufficient insulin secretion by pancreatic ß-cells. Islet transplantation from donors is an approach used for treating patients with diabetes; however, this therapy is difficult to implement because of the lack of donors. Nevertheless, several stem cells have the potential to differentiate from islet-like cells and enable insulin secretion for treating diabetes in animal models. For example, placenta is considered a waste material and can be harvested noninvasively during delivery without ethical or moral concerns. To date, the differentiation of islet-like cells from cow-derived placental stem cells (CPSCs) has yet to be demonstrated. MATERIALS AND METHODS: The investigation of potential differentiation of islet-like cells from CPSCs was conducted by supplementation with nicotinamide, exendin-4, glucose, and poly-d-lysine and was detected through reverse transcription polymerase chain reaction, dithizone staining, and immunocytochemical methods. RESULTS: Our results indicated that CPSCs are established and express mesenchymal stem cell surface antigen markers, such as CD73, CD166, ß-integrin, and Oct-4, but not hematopoietic stem cell surface antigen markers, such as CD45. After induction, the CPSCs successfully differentiated into islet-like cells. The CPSC-derived islet-like cells expressed islet cell development-related genes, such as insulin, glucagon, pax-4, Nkx6.1, pax-6, and Fox. Moreover, CPSC-derived islet-like cells can be stained with zinc ions, which are widely distributed in the islet cells and enable insulin secretion. CONCLUSION: Altogether, islet-like cells have the potential to be differentiated from CPSCs without gene manipulation, and can be used in diabetic animal models in the future for preclinical and drug testing trial investigations.


Assuntos
Diferenciação Celular , Ilhotas Pancreáticas/citologia , Transplante de Células-Tronco Mesenquimais , Células-Tronco Mesenquimais/citologia , Placenta/citologia , Animais , Bovinos , Diabetes Mellitus Tipo 1/terapia , Modelos Animais de Doenças , Feminino , Humanos , Insulina/metabolismo , Secreção de Insulina , Células Secretoras de Insulina/citologia , Células Secretoras de Insulina/metabolismo , Ilhotas Pancreáticas/metabolismo , Células-Tronco Mesenquimais/metabolismo , Gravidez , Reação em Cadeia da Polimerase Via Transcriptase Reversa
7.
BMC Complement Altern Med ; 17(1): 185, 2017 Mar 31.
Artigo em Inglês | MEDLINE | ID: mdl-28359333

RESUMO

BACKGROUND: Xiao'er Qixingcha (EXQ) has been extensively applied to relieve dyspepsia and constipation in children for hundreds of years in China. However, the therapeutic mechanism underlying its efficacy remained to be defined. The present study aimed to clarify the possible laxative and immune-regulating effects of EXQ on two models of experimental constipation in mice, which mimicked the pediatric constipation caused by high-heat and high-protein diet (HHPD). METHODS: The two models of constipated mice were induced by HHPD or HHPD + atropine respectively. To investigate the laxative and immune-regulating activities of EXQ, animals were treated with three doses of EXQ (0.75, 1.5 and 3 g/kg) for 7 consecutive days. The fecal output parameters (number and weight), weight of intestinal content and, the thymus and spleen indexes were measured. The levels of sIgA, IL-10, TNF-α and LPS in colon and serum were determined by ELISA. Furthermore, the pathological changes of colon tissue were examined after routine H&E staining. RESULTS: Both HHPD and HHPD + atropine treatments obviously inhibited the fecal output and reduced the colonic sIgA, prominently increased the levels of IL-10 and TNF-α in colonic tissue and elevated the contents of LPS in serum and colonic tissues. In contrast, oral administration of EXQ significantly improved the feces characters and dose-dependently decreased the intestinal changes in both models. In HHPD model test, EXQ efficaciously boosted the sIgA level in a dose-dependent manner, significantly elicited decreases in TNF-α and IL-10 levels, and evidently decreased the spleen and thymus indexes. In HHPD + atropine model test, EXQ treatment reversed the pathological changes by not only dramatically decreasing the spleen index and the levels of LPS and IL-10, but also markedly elevating the thymus index. Furthermore, microscopic observation revealed that EXQ treatment maintained the integrity of colonic mucosa, and protected the colonic tissues from inflammation in the both models. CONCLUSIONS: EXQ exhibited prominent laxative activity and effectively protected the colonic mucosal barrier in two models of constipated mice, of which the mechanism might be closely associated with its propulsive and immune-regulating properties. The current results not only validated the rationale for the clinical application of EXQ in pediatric constipation related symptoms, but also threw new light on the immune-inflammatory responses accompanied with chronic constipation pathology.


Assuntos
Constipação Intestinal/tratamento farmacológico , Constipação Intestinal/imunologia , Medicamentos de Ervas Chinesas/administração & dosagem , Fatores Imunológicos/administração & dosagem , Laxantes/administração & dosagem , Animais , China , Colo/efeitos dos fármacos , Colo/imunologia , Citocinas/imunologia , Dieta , Proteínas Alimentares/efeitos adversos , Proteínas Alimentares/análise , Temperatura Alta , Humanos , Intestinos , Masculino , Camundongos , Baço/efeitos dos fármacos , Baço/imunologia , Timo/efeitos dos fármacos , Timo/imunologia
8.
National Journal of Andrology ; (12): 417-421, 2017.
Artigo em Chinês | WPRIM | ID: wpr-812750

RESUMO

Objective@#To assess the clinical efficacy of the saw palmetto fruit extract (SPFE) in the treatment of lower urinary tract symptoms (LUTS) in patients with type ⅢA prostatitis.@*METHODS@#This retrospective study included 54 cases of type ⅢA prostatitis treated in the Outpatient Department of our hospital from January to December 2015. The patients were aged 35.06 ± 5.85 years, with a mean disease course of 3.8 ± 2.1 years, and all received oral medication of SPFE Capsules at the dose of 320 mg qd for 12 weeks. We assessed the therapeutic effects by comparing the NIH-chronic prostatitis symptom indexes (NIH-CPSI), voiding diary, International Prostate Symptom Scores (IPSS), and results of urodynamic examination before and after treatment.@*RESULTS@#Compared with the baseline, both NIH-CPSI and IPSS were significantly decreased after medication (27.61 ± 3.76 vs 18.6 ± 5.34, P <0.01; 20.44 ± 4.51 vs 10.96±4.62, P <0.01), and urodynamic examination and voiding diary showed dramatic post-medication improvement in the average urinary flow rate ([8.05±1.42] vs [12.05±2.60] ml/s, P <0.01 ), maximum urinary flow rate ([14.22±1.74] vs [21.32±4.51] ml/s, P <0.01), residual urine volume ([46.15±16.57] vs [14.55±10.21] ml, P <0.01), maximum urethral closure pressure ([76.52±3.53] vs [65.32±4.75] cm H2O, P <0.01), mean urinary volume ([124.63±40.55] vs [285.93±58.68] ml, P <0.01), urination frequency (16.96±4.17 vs 8.96±2.50, P <0.01), and nocturia frequency (8.94±3.23 vs 3.15±1.90, P <0.01). No apparent adverse reactions were observed in any of the patients.@*CONCLUSIONS@#SPFE Capsules can safely and effectively improve LUTS and thus the quality of life of patients with type ⅢA prostatitis.


Assuntos
Adulto , Humanos , Masculino , Doença Crônica , Sintomas do Trato Urinário Inferior , Tratamento Farmacológico , Extratos Vegetais , Usos Terapêuticos , Prostatite , Qualidade de Vida , Estudos Retrospectivos , Resultado do Tratamento , Micção , Agentes Urológicos , Usos Terapêuticos
9.
J Ethnopharmacol ; 186: 91-102, 2016 Jun 20.
Artigo em Inglês | MEDLINE | ID: mdl-27036629

RESUMO

ETHNOPHARMACOLOGICAL RELEVANCE: Kegan Liyan oral liquid (KGLY), a Chinese prescription modified from classic formulas Yin-Qiao-San (from TCM classic Wenbing Tiaobian) and Shen-Jie-San (first mentioned in Shanghan Wenyi Tiaobian), has been reported to exert heat-clearing and detoxifying effects and used extensively for the treatment of severe pulmonary diseases in clinics including influenza, cough and pneumonia. AIM OF THIS STUDY: The purpose of this study was to investigate the protective effect of KGLY on lipopolysaccharide (LPS) induced acute lung injury (ALI) in mice and to illuminate the underlying mechanisms. MATERIALS AND METHODS: Mice were orally administrated with KGLY (50, 100 and 150mg/kg) before intratracheal instillation of LPS. 24h post LPS challenge, lung tissues and the bronchoalveolar lavage fluid (BALF) were collected for lung wet/dry (W/D) weight ratio, histopathological examinations and biochemical analyses. The cell counts, protein concentration, interleukin-1ß (IL-1ß), interleukin-6 (IL-6), necrosis factor-α (TNF-α), macrophage inflammatory protein-2 (MIP-2) in BALF, superoxide dismutase (SOD), glutathione (GSH), myeloperoxidase (MPO) and malondialdehyde (MDA) levels were detected. Meanwhile, the activation of toll-like receptor 4 (TLR4), nuclear factor kappa B (NF-κB), as well as matrix metalloproteinases 9 (MMP-9) were determined by western blot assay. RESULTS: KGLY significantly prolonged mice survival time and ameliorated LPS-induced edema, thickening of alveolar septa and inflammatory cell infiltration in a dose-dependent manner. Additionally, KGLY markedly attenuated LPS-induced acute pulmonary inflammation via decreasing the expressions of cytokines and chemokines (IL-1ß, IL-6, TNF-α, and MIP-2), enhanced the activities of anti-oxidative indicators (SOD and GSH), suppressed the levels of MPO and MDA, and down-regulated the expressions of TLR4, NF-κB and MMP9. CONCLUSIONS: The results suggested that the relieving effect of KGLY against LPS-induced ALI might be partially due to suppression of oxidative stress and inflammatory response, inhibition of TLR4-mediated NF-κB activation, and down-regulation of MMP9 expression, indicating it may be a potential therapeutic agent for ALI.


Assuntos
Lesão Pulmonar Aguda/induzido quimicamente , Medicamentos de Ervas Chinesas/farmacologia , Lipopolissacarídeos/toxicidade , Metaloproteinase 9 da Matriz/metabolismo , NF-kappa B/metabolismo , Receptor 4 Toll-Like/antagonistas & inibidores , Lesão Pulmonar Aguda/tratamento farmacológico , Administração Oral , Animais , Antioxidantes/metabolismo , Líquido da Lavagem Broncoalveolar/química , Líquido da Lavagem Broncoalveolar/citologia , Citocinas/genética , Citocinas/metabolismo , Medicamentos de Ervas Chinesas/química , Regulação da Expressão Gênica/efeitos dos fármacos , Masculino , Metaloproteinase 9 da Matriz/genética , Camundongos , Estrutura Molecular , NF-kappa B/genética , Transdução de Sinais/efeitos dos fármacos , Análise de Sobrevida , Receptor 4 Toll-Like/genética , Receptor 4 Toll-Like/metabolismo
10.
Mar Pollut Bull ; 85(2): 648-58, 2014 Aug 30.
Artigo em Inglês | MEDLINE | ID: mdl-24321880

RESUMO

The response of metal accumulation in coral Tubastraea coccinea to various degrees of metal enrichment was investigated from the Yin-Yang Sea (YYS) receiving abandoned mining effluents, the Kueishan Islet (KI) hydrothermal vent field, and the nearshore area of remoted Green Island (GI). The concentrations of most dissolved metals were highest in seawater at YYS, followed by KI, and then GI, showing the effects of anthropogenic and venting inputs on metal levels. Five metals (Co, Fe, Mn, Ni, and Zn) yielded significant differences (p<0.05) among the skeleton samples. We identified similar patterns in the metal-Ca ratios, indicating that the elevated metals in skeletons was a consequence of external inputs. The coral tissues were relatively sensitive in monitoring metal accumulation, showing significant differences among three locations for Cd, Co, Cu, Fe, Pb, Ni, and Zn. Specific bioconcentration factors provided strong support for the differential metal accumulation in skeletons and tissues.


Assuntos
Antozoários/química , Monitoramento Ambiental/métodos , Metais Pesados/análise , Metais/análise , Poluentes Químicos da Água/análise , Animais , Geografia , Fontes Hidrotermais , Água do Mar/química
11.
PLoS One ; 8(6): e66289, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23840435

RESUMO

A common hypothesis to explain the effect of litter mixing is based on the difference in litter N content between mixed species. Although many studies have shown that litter of invasive non-native plants typically has higher N content than that of native plants in the communities they invade, there has been surprisingly little study of mixing effects during plant invasions. We address this question in south China where Mikania micrantha H.B.K., a non-native vine, with high litter N content, has invaded many forested ecosystems. We were specifically interested in whether this invader accelerated decomposition and how the strength of the litter mixing effect changes with the degree of invasion and over time during litter decomposition. Using litterbags, we evaluated the effect of mixing litter of M. micrantha with the litter of 7 native resident plants, at 3 ratios: M1 (1∶4, = exotic:native litter), M2 (1∶1) and M3 (4∶1, = exotic:native litter) over three incubation periods. We compared mixed litter with unmixed litter of the native species to identify if a non-additive effect of mixing litter existed. We found that there were positive significant non-additive effects of litter mixing on both mass loss and nutrient release. These effects changed with native species identity, mixture ratio and decay times. Overall the greatest accelerations of mixture decay and N release tended to be in the highest degree of invasion (mix ratio M3) and during the middle and final measured stages of decomposition. Contrary to expectations, the initial difference in litter N did not explain species differences in the effect of mixing but overall it appears that invasion by M. micrantha is accelerating the decomposition of native species litter. This effect on a fundamental ecosystem process could contribute to higher rates of nutrient turnover in invaded ecosystems.


Assuntos
Mikania/metabolismo , Compostos de Nitrogênio/metabolismo , Componentes Aéreos da Planta/metabolismo , Plantas Daninhas/metabolismo , China , Ficus/química , Ficus/metabolismo , Espécies Introduzidas , Mikania/química , Compostos de Nitrogênio/química , Componentes Aéreos da Planta/química , Plantas Daninhas/química
12.
Int Immunopharmacol ; 12(1): 294-301, 2012 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-22193241

RESUMO

Seasonal influenza A infection results in considerable morbidity and mortality. The limited efficacy of available therapeutic strategies stresses the need for development and study of new molecules against influenza virus (IFV). Patchouli alcohol (PA), the major chemical constituent of Pogostemonis Herba, was previously found to strongly inhibit influenza H1N1 replication in vitro. In the present study, the in vivo anti-IFV effect of PA was investigated. In a mouse model infected with lethal levels of FM1, oral administration of PA (20 mg/kg to 80 mg/kg) for 7 d post IFV infection significantly increased the survival rate and survival time. For IFV infection at nonlethal levels, the quantity of IFV in the lungs 5 d after infection was significantly reduced after PA (20 mg/kg to 80 mg/kg) administration. Anti-IFV IgA, IgM, and IgG titers in serum on day 6 were significantly higher in the PA-treated group than the IFV-control group. Anti-IFV immune response augmentation was further confirmed by the elevated production of CD3+, CD4+, and CD8+ T cell levels in blood. Furthermore, the levels of inflammatory cytokines, including TNF-alpha, IL-10 and IFN-gamma in serum of mice, were regulated. Lung inflammation was reduced significantly after PA administration, and the effect may be mediated, at least in part, by regulating the lung levels of inflammatory cytokines. Thus, oral administration of PA appears to be able to augment protection against IFV infection in mice via enhancement of host immune responses, and attenuation of systemic and pulmonary inflammatory responses.


Assuntos
Alphainfluenzavirus/imunologia , Medicamentos de Ervas Chinesas/uso terapêutico , Infecções por Orthomyxoviridae/prevenção & controle , Fitoterapia , Sesquiterpenos/uso terapêutico , Administração Oral , Animais , Anticorpos Antivirais/sangue , Anticorpos Antivirais/imunologia , Citocinas/sangue , Feminino , Alphainfluenzavirus/genética , Alphainfluenzavirus/patogenicidade , Lamiaceae , Pulmão/efeitos dos fármacos , Pulmão/imunologia , Pulmão/patologia , Masculino , Camundongos , Infecções por Orthomyxoviridae/imunologia , Infecções por Orthomyxoviridae/patologia , RNA Viral/análise
13.
J Chem Ecol ; 36(10): 1076-82, 2010 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-20821346

RESUMO

To better understand the effect of predicted elevated levels of carbon dioxide (CO2) on an invasive weed Mikania micrantha, we constructed a suppressive subtractive hybridization (SSH) library from the leaves of M. micrantha exposed to CO2 at 350 and 750 ppm for 6 d, and isolated a novel gene named ß-caryophyllene synthase. ß-Caryophyllene synthase catalyses the conversion of farnesyl diphosphate to ß-caryophyllene, a volatile sesquiterpene with allelopathic potential. Real-time PCR analysis revealed that gene expression of ß-caryophyllene synthase in M. micrantha leaves was strongly induced in response to elevated CO2. Gas chromatography-mass spectrometry (GC-MS) and gas chromatography (GC) analyses showed that emission levels of ß-caryophyllene from leaves of M. micrantha increased when exposed to 750 ppm CO2. Bioassays showed that phytotoxicity of ß-caryophyllene against Raphanus sativus, Brassica campestris, Lactuca sativa, and M. micrantha was dose-dependent and varied with the receptor plants and concentrations of CO2. ß-Caryophyllene displayed higher phytotoxic effects at 750 ppm than those at 350 ppm CO2, especially on R. sativus. These results suggest that elevated atmospheric CO2 levels may enhance biosynthesis and phytotoxicity of allelochemicals in M. micrantha, one of the worst invasive weeds in the world, which in turn might enhance its potential allelopathic effect on neighboring native plants if released in bioactive concentrations. Further investigations are required to determine the adaptive responses of both invasive and native plants to a gradual increase of atmospheric CO2 to 750 ppm predicted over a 100 year period.


Assuntos
Alquil e Aril Transferases/metabolismo , Dióxido de Carbono/toxicidade , Mikania/efeitos dos fármacos , Plantas Daninhas/efeitos dos fármacos , Sesquiterpenos/metabolismo , Relação Dose-Resposta a Droga , Cromatografia Gasosa-Espectrometria de Massas , Mikania/química , Mikania/fisiologia , Folhas de Planta/química , Folhas de Planta/efeitos dos fármacos , Folhas de Planta/metabolismo , Plantas Daninhas/fisiologia , Sesquiterpenos Policíclicos , Reação em Cadeia da Polimerase Via Transcriptase Reversa , Fatores de Tempo
14.
J Plant Physiol ; 166(13): 1423-35, 2009 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-19328592

RESUMO

The influence of Cuscuta campestris on its host Mikania micrantha has been studied with respect to biomass accumulation, physiology and ecology. Molecular events of this parasitic plant-plant interaction are poorly understood, however. In this study, we identified novel genes from M. micrantha induced by C. campestris infection. Genes expressed upon parasitization by C. campestris at early post-penetration stages were investigated by construction and characterization of subtracted cDNA libraries from shoots and stems of M. micrantha. Three hundred and three presumably up-regulated expressed sequence tags (ESTs) were identified and classified in functional categories, such as "metabolism", "cell defence and stress", "transcription factor", "signal transduction", "transportation" and "photosynthesis". In shoots and stems of infected M. micrantha, genes associated with defence responses and cell wall modifications were induced, confirming similar data from other parasitic plant-plant interactions. However, gene expression profiles in infected shoots and stems were found to be different. Compared to infected shoots, more genes induced in response to biotic and abiotic stress factors were identified in infected stems. Furthermore, database comparisons revealed a notable number of M. micrantha ESTs that matched genes with unknown function. Expression analysis by quantitative real-time RT-PCR of 21 genes (from different functional categories) showed significantly increased levels for 13 transcripts in response to C. campestris infection. In conclusion, this study provides an overview of genes from parasitized M. micrantha at early post-penetration stages. The acquired data form the basis for a molecular understanding of host reactions in response to parasitic plants.


Assuntos
Cuscuta/fisiologia , Perfilação da Expressão Gênica , Regulação da Expressão Gênica de Plantas , Genes de Plantas , Mikania/genética , Mikania/parasitologia , Hibridização de Ácido Nucleico/métodos , Etiquetas de Sequências Expressas , Brotos de Planta/genética , Brotos de Planta/parasitologia , Caules de Planta/genética , Caules de Planta/parasitologia , Reação em Cadeia da Polimerase Via Transcriptase Reversa
15.
Arch Virol ; 153(9): 1765-70, 2008.
Artigo em Inglês | MEDLINE | ID: mdl-18679764

RESUMO

The complete RNA genomic sequence of a new virus infecting Mikania micrantha, designated as Mikania micrantha wilt virus (MMWV), has been determined. The genomic sequence and the predicted gene products of MMWV were similar to those of the other viruses of the genus Fabavirus. The MMWV nucleotide sequence showed 75.6% identity to that of gentian mosaic virus, 56.6 and 57% identity to those of two Broad bean wilt virus 1 isolates, and between 55.7 and 58% identity to those of seven Broad bean wilt virus 2 isolates. Our results suggested that MMWV represents a distinct isolate of the candidate species Gentian mosaic virus.


Assuntos
Fabavirus/genética , Fabavirus/isolamento & purificação , Genoma Viral , Mikania/virologia , Doenças das Plantas/virologia , Fabavirus/classificação , Dados de Sequência Molecular , Filogenia
16.
Zhonghua Nan Ke Xue ; 9(9): 716-9, 2003 Dec.
Artigo em Chinês | MEDLINE | ID: mdl-14727367

RESUMO

OBJECTIVE: To investigate the curative effect of antiphlogistic agent series on treating chronic nonbacterial prostatitis (CNP). METHODS: One hundred and sixty patients were randomized into 4 groups for an 8-week clinical observation: group A (oral antiphlogistic medicinal granules only), group B (oral antiphlogistic medicinal granules + retention enema), group C (oral antiphlogistic medicinal granules + rectal), and group D (antiphlogistic medicinal granules + rectally + hip bath). Single blind trials were employed. RESULTS: The curative rates of the 4 groups were 37.5%, 57.5%, 52.5% and 82.5% respectively, while the total efficacy rates were 42.5%, 82.5%, 77.5% and 92.5% respectively. Compared with groups A, B and C, the curative rate of group D was significantly higher (P < 0.05). The difference in efficacy rates was slight between groups B and D (P < 0.05), but significant between groups A and C (P < 0.05). CONCLUSIONS: Combined treatment therapy can improve the effect of CNP treatment and clear away heat and toxic material. The antiphlogistic agent series, with the effect of motivating blood circulation and removing blood stasis, turned out to be an effective traditional Chinese medicine in treating CNP.


Assuntos
Medicina Tradicional Chinesa , Prostatite/tratamento farmacológico , Adulto , Doença Crônica , Humanos , Masculino , Pessoa de Meia-Idade
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