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1.
Front Neurosci ; 17: 1124064, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37304013

RESUMO

Objectives: Post-stroke dysphagia is the most common neurological impairment after stroke. The swallowing process is controlled by a network made up of the cerebral cortex, subcortical area, and brainstem structure. The disruption of the swallowing network after stroke leads to dysphagia. The affected swallowing muscles after stroke mainly include the laryngeal muscles (suprahyoid muscle and thyrohyoid muscle) and infrahyoid muscle. These muscles experience kinematic effects and muscle strength weakens, resulting in reduced movement in the swallowing process. Acupuncture can change the excitability of cerebral cortical nerve cells, promote the recovery of neurological function, and enhance neuromuscular excitability, ultimately improving the control of swallowing-related nerves and muscles and promoting swallowing functional recovery. In this meta-analysis, we systematically evaluate the clinical efficacy of acupuncture in the treatment of post-stroke dysphagia. Methods: Randomized controlled trials of tongue acupuncture therapy for post-stroke dysphagia were searched and selected from seven electronic databases (PubMed, CBM, Cochrane, Embase, CNKI, VPCS, and Wan fang). The Cochrane Collaboration tool was used to conduct methodological quality assessment. Rev. Man 5.4 software was utilized to perform data analysis. Results: A total of 15 studies with 1,094 patients were included. Meta-analysis Showed that WST score WST score (MD = -0.56, 95% CI (-1.23, 0.12), Z = 1.62, p < 0.00001), SSA score (MD = -1.65, 95% CI (-2.02, -1.28), Z = 8.77, p < 0.00001). These results suggested that the treatment group (tongue acupuncture or tongue acupuncture combined with other therapies) was superior to the control group in reducing WST scores and SSA scores. The clinical efficacy of the tongue acupuncture group was better compared with the control group (MD = 3.83, 95% CI (2.61, 5.62), Z = 6.88, p < 0.00001). Conclusion: The meta-analysis showed that the total effective rate of patients with dysphagia after stroke in the treatment group (acupuncture, tongue acupuncture, and acupuncture combined with other therapy) was higher than that in the control group. These results indicated that acupuncture, tongue acupuncture, and acupuncture combined with other therapy can improve post-stroke dysphagia.

2.
Front Nutr ; 9: 1021280, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36407510

RESUMO

In order to study the effects of the compound preservatives (curcumin and piperine (CP)) and vacuum packaging (VP) on the quality of salmon during cold chain logistics suffered from temperature abuse, the physiochemical indexes (texture, water holding capacity (WHC), total volatile basic nitrogen (TVB-N), thiobarbituric acid reactive substances (TBARS), free amino acids (FAA) contents), microbial indicators (total mesophilic bacteria count (MBC), total psychrotrophic bacteria count (PBC), H2S-producing bacteria count (HSBC)) were determined, and the moisture changes were explored by near-infrared (NIR) spectroscopy and low-field nuclear magnetic resonance (LF-NMR). The results showed that the treatment of curcumin and piperine in combination with vacuum packaging could maintain the quality of salmon suffered from temperature abuse most effectively. At the end of storage, the MBC of VP+CP was only 4.95 log CFU/g, which was about 1 log CFU/g lower than the control sample stored at the same condition. The combined treatment also retarded the increase of TVB-N, TBARS, and the decrease of hardness, springiness, and a* value, as well as water migration in salmon, contributing to higher water holding capacity and better appearance. Besides, VP+CP retarded the decrease of free glutamate, which contributed to umami taste. Due to the biological activity and safety of the preserves, the combined treatment could be a promising method for preservation of seafood.

3.
Artigo em Inglês | MEDLINE | ID: mdl-36225187

RESUMO

Objective: This review evaluated the efficacy of tongue acupuncture for the clinical treatment of poststroke aphasia. Methods: PubMed, Medline, Cochrane, Embase, CNKI, VIP, and Wanfang databases were searched from their inception to 1st June 2022. The dataset included randomized controlled trials (RCTs) with tongue acupuncture for the treatment of poststroke aphasia. Data aggregation and risk of bias evaluation were conducted on Review Manager Version 5.4.1 and Stata16.0. The main outcome measures included the Aphasia Battery of Chinese (ABC), the Chinese Functional Communication Profile (CFCP), the Boston Diagnostic Aphasia Examination (BDAE), and clinical efficiency. Then, comparing the effectiveness of tongue acupuncture, tongue acupuncture combined with conventional therapies, conventional therapies with head acupuncture, language training, body acupuncture, and Jie Yu Dan. Results: A total of 20 studies with 1355 patients were included. Meta-analysis showed that compared with conventional treatments, tongue acupuncture has a significant improvement in clinical efficacy score (MD = 1.25, 95% CI (1.09, 1.43), P=0.001) and CFCP of poststroke aphasia (MD = 39.78, 95% CI (26.59, 52.97), P < 0.00001), but was not significant in improving ABC (MD = 5.95, 95% CI (2.85, 9.04), P=0.06). Compared to the conventional treatments, tongue acupuncture combined with conventional therapies promoted the ABC (MD = 11.48, 95% CI (2.20, 20.75), P < 0.00001), clinical efficacy score (MD = 1.22, 95% CI (1.14, 1.30), P < 0.00001), and CFCP score (MD = 29.80, 95% CI (19.08, 40.52), P < 0.00001) of poststroke aphasia. Conclusion: This systematic review indicated that tongue acupuncture or tongue acupuncture combined with conventional treatments was an effective therapy for treating poststroke aphasia. However, stricter evaluation standards and rigorously designed RCTs are needed.

4.
Nutrition ; 101: 111658, 2022 09.
Artigo em Inglês | MEDLINE | ID: mdl-35691183

RESUMO

OBJECTIVES: Arginine is an amino-acid supplement and precursor for nitric-oxide synthesis, which affects various biologic processes. The objective of this study was to determine the effects of arginine supplementation on growth hormone (GH) and metabolic parameters. METHODS: Thirty physically active, healthy men (age 18-39 y; body mass index: 18.5-25 kg/m2) were randomized in a double-blind, placebo-controlled, crossover trial. Arginine (10 g) and placebo (0 g) beverages were consumed after an overnight fast. Blood samples were collected at baseline and 1.5, 3.0, and 24 h after supplementation. The primary outcomes were serum GH and metabolomics. Also, amino acids, glucose, insulin, triacylglycerols, thyroid hormones, testosterone, cortisol, dehydroepiandrosterone, and mood state were assessed. Individuals with detectable increases in GH were analyzed separately (responders: n = 16; < 0.05 ng/mL at 1.5 h). Repeated-measure analyses of variance estimated the treatment effects at each timepoint. RESULTS: Arginine levels increased at 1.5 h (146%) and 3.0 h (95%; P ≤ 0.001) and GH (193%) and thyroid-stimulating hormone (TSH; 10%) levels at 24 h (P < 0.05) after arginine versus placebo consumption. Arginine versus placebo increased glucose levels at 1.5 h (5%) and 3.0 h (3%; P ≤ 0.001). Arginine versus placebo did not affect other dependent measures, including mood state (P > 0.05), but changes in the urea, glutamate, and citric-acid pathways were observed. Among responders, arginine versus placebo increased GH at 1.5 h (37%), glucose at 1.5 h (4%) and 3.0 h (4%), and TSH at 24 h (9%; P < 0.05). Responders had higher levels of benzoate metabolites at baseline and 1.5 h, and an unknown compound (X-16124) at baseline, 1.5 h, and 24 h that corresponds to a class of gut microbes (P < 0.05). CONCLUSIONS: Arginine supplementation modestly increased GH, glucose, and TSH levels in younger men. Responders had higher benzoate metabolites and an unknown analyte attributed to the gut microbiome. Future studies should examine whether the increased prevalence of these gut microorganisms corresponds with GH response after arginine supplementation.


Assuntos
Arginina , Hormônio do Crescimento Humano , Adolescente , Adulto , Arginina/farmacologia , Benzoatos/análise , Suplementos Nutricionais/análise , Método Duplo-Cego , Glucose , Hormônio do Crescimento , Hormônio do Crescimento Humano/metabolismo , Humanos , Fator de Crescimento Insulin-Like I/metabolismo , Masculino , Tireotropina , Adulto Jovem
5.
Fitoterapia ; 156: 105069, 2022 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-34743932

RESUMO

Japonisine A, a novel fawcettimine-type Lycopodium alkaloid with an unusual skeleton and two new fawcettimine-type ones, along with 20 known Lycopodium alkaloids, were isolated from the whole plants of Lycopodium japonicum Thunb. Their structures were determined by extensive spectroscopic analysis, including 1D and 2D NMR, and HR-ESIMS, as well as by comparison with the literature data. Notably, japonisine A (1) was the first example of fawcettimine-related Lycopodium alkaloid with a 2-oxopropyl attached at C-6. All the isolates were evaluated for their inhibitory effects on acetylcholinesterase (AChE) and α-glucosidase. Unfortunately, the results indicated that all the compounds were inactive against the acetylcholinesterase (AChE) and α-glucosidase.


Assuntos
Alcaloides/química , Lycopodium/química , Estrutura Molecular , Extratos Vegetais/química , Plantas Medicinais/química , China
6.
Nutrients ; 13(9)2021 Aug 24.
Artigo em Inglês | MEDLINE | ID: mdl-34578801

RESUMO

Triple negative breast cancer (TNBC) is an aggressive and highly metastatic breast cancer subtype with limited treatment options. Obesity and insulin resistance are associated with a worse prognosis in those with TNBC. Moringa oleifera (moringa) is a tropical edible plant used for both food and medicinal purposes and found to have anti-obesity and anti-cancer effects in vitro and in preclinical models. The anti-cancer effects of moringa seed extract alone and in combination with chemotherapy were evaluated in immunocompromised female mice with diet-induced obesity bearing MDA-MB-231-derived xenograft tumors. Moringa supplementation protected against high-fat diet- and chemotherapy-induced increases in fasting glucose and improved insulin sensitivity. Moringa supplementation alone did not attenuate tumor growth relative to chemotherapy alone, and in combination worsened tumor progression. Moringa supplementation alone reduced angiogenesis, but this effect was abrogated in combination with chemotherapy. Moringa supplementation may be an effective strategy to improve metabolic health in mice with obesity and TNBC and reduce angiogenesis in tumors, but may have a negative interaction when used as a concurrent complementary therapy. Caution should be taken when considering the consumption of moringa seed extracts while receiving chemotherapy for breast cancer treatment. Further investigations of alternative timings of moringa therapy are warranted.


Assuntos
Neoplasias Mamárias Experimentais/tratamento farmacológico , Moringa oleifera/química , Obesidade/tratamento farmacológico , Extratos Vegetais/farmacologia , Neoplasias de Mama Triplo Negativas/tratamento farmacológico , Animais , Antineoplásicos/efeitos adversos , Antineoplásicos/farmacologia , Linhagem Celular Tumoral , Dieta Hiperlipídica/efeitos adversos , Suplementos Nutricionais , Progressão da Doença , Feminino , Humanos , Resistência à Insulina , Neoplasias Mamárias Experimentais/metabolismo , Camundongos , Obesidade/metabolismo , Sementes/química , Neoplasias de Mama Triplo Negativas/metabolismo , Ensaios Antitumorais Modelo de Xenoenxerto
7.
Diabetes Obes Metab ; 22(7): 1197-1206, 2020 07.
Artigo em Inglês | MEDLINE | ID: mdl-32166884

RESUMO

AIM: To compare the cardiovascular risks between users and non-users of sodium-glucose co-transporter-2 (SGLT2) inhibitors based on electronic medical record data from a large integrated healthcare system in South Louisiana. MATERIALS AND METHODS: Demographic, anthropometric, laboratory and medication prescription information for patients with type 2 diabetes who were new users of SGLT2 inhibitors, either as initial treatments or as add-on treatments, were obtained from electronic health records. Mediation analysis was performed to evaluate the association of use of SGLT2 inhibitors and changes of metabolic risk factors with the risk of incident ischaemic heart disease. RESULTS: A total of 5338 new users of SGLT2 inhibitors were matched with 13 821 non-users. During a mean follow-up of 3.26 years, 2302 incident cases of ischaemic heart disease were defined. After adjusting for multiple confounding factors, patients using SGLT2 inhibitors had a lower risk of incident ischaemic heart disease compared to patients not using SGLT2 inhibitors (hazard ratio [HR] 0.63, 95% confidence interval [CI] 0.54-0.73). Patients using SGLT2 inhibitors also had a lower risk of incident ischaemic heart disease within 6 months (HR 0.36, 95% CI 0.25-0.44), 12 months (HR 0.40, 95% CI 0.32-0.49), 24 months (HR 0.53, 95% CI 0.43-0.60) and 36 months (HR 0.65, 95% CI 0.54-0.73), respectively. Reductions in systolic blood pressure partly mediated lowering risk of ischaemic heart disease among patients using SGLT2 inhibitors. CONCLUSIONS: The real-world data in the present study show the contribution of SGLT2 inhibitors to reducing risk of ischaemic heart disease, and their benefits beyond glucose-lowering.


Assuntos
Diabetes Mellitus Tipo 2 , Inibidores da Dipeptidil Peptidase IV , Isquemia Miocárdica , Inibidores do Transportador 2 de Sódio-Glicose , Simportadores , Diabetes Mellitus Tipo 2/complicações , Diabetes Mellitus Tipo 2/tratamento farmacológico , Diabetes Mellitus Tipo 2/epidemiologia , Glucose , Humanos , Louisiana , Isquemia Miocárdica/epidemiologia , Isquemia Miocárdica/prevenção & controle , Sódio , Inibidores do Transportador 2 de Sódio-Glicose/uso terapêutico
8.
Acta Orthop Traumatol Turc ; 53(6): 468-473, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31628002

RESUMO

STUDY DESIGN: A systematic review and meta-analysis. OBJECTIVE: The objective of this meta-analysis was to evaluate the association between calcium-phosphorus balance and adolescent idiopathic scoliosis (AIS). METHODS: Databases, including PubMed, OVID database, Web of Science, CBM database and CNKI database were searched for the relevant case control studies and cross-sectional studies. Two authors selected studies and extracted data independently. Data analysis was performed by Review Manager Software 5.0. Subgroup analysis was performed on the serum level of vitamin D according to gender and menstruation. RESULTS: Five studies were included, with a total of 646 cases of AIS and 791 controls. AIS group had a lower serum level of vitamin D compared to control group [MD = -6.74, 95% CI (-9.47, -4.00)]. Gender and menstruation condition were thought to have no effect on the primary outcome of vitamin D level by subgroup analysis [MD = -5.97, 95% CI (7.61, -4.34)]. The AIS group had a lower calcium level [SMD= -0.77, 95% CI (-1.51, -0.02)] and calcitonin level compared to control group. There was no statistical difference in phosphorus level [SMD=0.5, 95% CI (-0.46, 0.57)] and parathyroid hormone level [SMD = -0.11, 95% CI (-0.54, -0.31)]. Meanwhile, the observational indexes, including serum levels of calcium, phosphorus, parathyroid hormone and calcitonin were within normal limits. CONCLUSION: Vitamin D deficiency may be involved in the pathogenesis of AIS by influencing the regulation of calcium-phosphors metabolism on human bone. Therefore, we suggest to screen vitamin D level in AIS patients. LEVEL OF EVIDENCE: Level III, Therapeutic Study.


Assuntos
Cálcio/sangue , Fósforo/sangue , Escoliose/metabolismo , Biomarcadores/sangue , Criança , Humanos
9.
BMC Complement Altern Med ; 18(1): 198, 2018 Jun 28.
Artigo em Inglês | MEDLINE | ID: mdl-29954374

RESUMO

BACKGROUND: Evidence suggests that tocotrienols may benefit bone health in osteopenic women. However, their safety in this population has never been investigated. This study was to evaluate the safety of a 12-week supplementation of annato tocotrienol in postmenopausal osteopenic women, along with effects of the supplementation on quality of life, body composition, physical activity, and nutrient intake in this population. METHODS: Eighty nine postmenopausal osteopenic women were randomly assigned to 3 treatment arms: (1) Placebo (430 mg olive oil/day), (2) Low tocotrientol (Low TT) (430 mg tocotrienol/day from DeltaGold 70 containing 300 mg tocotrienol) and (3) High tocotrienol (High TT) (860 mg tocotrienol/day from DeltaGold 70 containing 600 mg tocotrienol) for 12 weeks. DeltaGold 70 is an extract from annatto seed with 70% tocotrienol consisting of 90% delta-tocotrienol and 10% gamma-tocotrienol. Safety was examined by assessing liver enzymes (aspartate aminotransferase, alanine aminotransferase), alkaline phosphatase, bilirubin, kidney function (blood urea nitrogen and creatinine), electrolytes, glucose, protein, albumin, and globulin at 0, 6, and 12 weeks. Serum tocotrienol and tocopherol concentrations were assessed and pills counted at 0, 6, and 12 weeks. Quality of life, body composition, physical activity, and dietary macro- and micro-nutrient intake were evaluated at 0 and 12 weeks. A mixed model of repeated measures ANOVA was applied for analysis. RESULTS: Eighty seven subjects completed the study. Tocotrienol supplementation did not affect liver or kidney function parameters throughout the study. No adverse event due to treatments was reported by the participants. Tocotrienol supplementation for 6 weeks significantly increased serum delta-tocotrienol level and this high concentration was sustained to the end of study. There was no difference in serum delta-tocotrienol levels between the Low TT and the High TT groups. No effects of tocotrienol supplementation were observed on quality of life, body composition, physical activity, and nutrient intake. CONCLUSIONS: Annatto-derived tocotrienol up to 600 mg per day for 12 weeks appeared to be safe in postmenopausal osteopenic women, particularly in terms of liver and kidney functions. Tocotrienol supplementation for 12 weeks did not affect body composition, physical activity, quality of life, or intake of macro- and micro-nutrients in these subjects. TRIAL REGISTRATION: ClinicalTrials.gov identifier: NCT02058420 . TITLE: Tocotrienols and bone health of postmenopausal women.


Assuntos
Composição Corporal , Carotenoides/uso terapêutico , Extratos Vegetais/uso terapêutico , Pós-Menopausa , Qualidade de Vida , Tocotrienóis/uso terapêutico , Idoso , Bixaceae , Carotenoides/administração & dosagem , Carotenoides/sangue , Suplementos Nutricionais , Exercício Físico , Feminino , Humanos , Pessoa de Meia-Idade , Extratos Vegetais/administração & dosagem , Extratos Vegetais/sangue , Tocotrienóis/administração & dosagem , Tocotrienóis/sangue
10.
Planta Med ; 84(15): 1127-1133, 2018 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-29689587

RESUMO

Three new bisindole alkaloids, 3'-(2-oxopropyl)-19,20-dihydrotabernamine (1: ), 3'-(2-oxopropyl)-ervahanine B (2: ), 19,20-dihydrovobparicine (3: ), and 20 known compounds were isolated from the aerial parts of Tabernaemontana bufalina. The structures of these alkaloids were elucidated using spectroscopic methods. The absolute configurations of 1: -3: were determined by the circular dichroic exciton chirality method. Compounds 1: -23: were screened for their cytotoxicity against two human cancer cell lines, A-549 and MCF-7. Ten compounds (1: -3, 10, 14, 16, 17, 19, 22: , and 23: ) exhibited inhibitory effects against the two human cancer cells with IC50 values of 1.19 ~ 6.13 µM.


Assuntos
Hidrocarbonetos Aromáticos com Pontes/química , Alcaloides Indólicos/química , Monoterpenos/química , Tabernaemontana/química , Hidrocarbonetos Aromáticos com Pontes/isolamento & purificação , Hidrocarbonetos Aromáticos com Pontes/farmacologia , Linhagem Celular Tumoral , Humanos , Alcaloides Indólicos/isolamento & purificação , Alcaloides Indólicos/farmacologia , Concentração Inibidora 50 , Espectroscopia de Ressonância Magnética , Modelos Estruturais , Monoterpenos/isolamento & purificação , Monoterpenos/farmacologia , Componentes Aéreos da Planta/química
11.
BMJ Open ; 6(12): e012572, 2016 12 23.
Artigo em Inglês | MEDLINE | ID: mdl-28011809

RESUMO

INTRODUCTION: Osteoporosis is a major health concern in postmenopausal women, and oxidative stress contributes to the development of bone loss. Cellular studies and ovariectomised rat model mimicking bone loss in postmenopausal women show the bone-protective effect of tocotrienols (TTs) with antioxidant capability. We aim to access the safety and efficacy of TT consumption for bone health in postmenopausal women. METHODS AND ANALYSIS: In this 12-week randomised double-blinded placebo-controlled trial for the effects of dietary TT supplementation in postmenopausal women, postmenopausal women aged 45 years and older with at least 1 year after menopause and bone mineral density T-score at the spine and/or hip 2.5 or more below the reference values will be randomly assigned to 3 daily supplements: (1) placebo group receiving 860 mg olive oil, (2) low TT group receiving 430 mg of 70% pure TTs (containing 300 mg TT) and (3) high TT group receiving 860 mg of 70% pure TTs (600 mg TT). The primary outcome measure will be urinary N-terminal telopeptide. The secondary outcome measures will be serum bone-specific alkaline phosphatase, receptor activator of nuclear factor-κB ligand, osteoprotegerin, urinary 8-hydroxy-2'-deoxyguanosine and quality of life. At 0, 6 and 12 weeks, the following will be assessed: (1) primary and secondary outcome measures; (2) serum TT and tocopherol concentrations; (3) physical activity and food frequency questionnaires. Liver function will be monitored every 6 weeks for safety. 'Intent-to-treat' principle will be employed for data analysis. A model of repeated measurements with random effect error terms will be applied. Analysis of covariance, χ2 analysis and regression will be used for comparisons. ETHICS AND DISSEMINATION: This study was approved by the Bioethics Committee of the Texas Tech University Health Sciences Center. The findings of this trial will be submitted to a peer-reviewed journal in the areas of bone or nutrition and international conferences. TRIAL REGISTRATION NUMBER: NCT02058420; results.


Assuntos
Antioxidantes/uso terapêutico , Osso e Ossos/metabolismo , Suplementos Nutricionais , Osteoporose Pós-Menopausa/prevenção & controle , Tocotrienóis/uso terapêutico , Idoso , Idoso de 80 Anos ou mais , Antioxidantes/administração & dosagem , Antioxidantes/farmacologia , Biomarcadores/metabolismo , Densidade Óssea , Relação Dose-Resposta a Droga , Feminino , Humanos , Fígado/efeitos dos fármacos , Pessoa de Meia-Idade , Osteoporose Pós-Menopausa/metabolismo , Pós-Menopausa , Projetos de Pesquisa , Tocotrienóis/administração & dosagem , Tocotrienóis/farmacologia
12.
J Nat Prod ; 79(5): 1365-72, 2016 05 27.
Artigo em Inglês | MEDLINE | ID: mdl-27142786

RESUMO

Nine new conjugates of sesquiterpenoids and acylphloroglucinols, named eucarobustols A-I (1-9), as well as 11 known analogues were isolated from the leaves of Eucalyptus robusta. The sesquiterpenoid motifs furnishing the new conjugates included four structural types of aristolane (1 and 2), guaiane (3), eudesmane (4), and aromadendrane (5-9) moieties. Compounds 1 and 2 were found to represent the first examples of conjugates of aristolane and acylphloroglucinol units. In turn, compound 3 features a new coupling model of guaiane and acylphloroglucinol via the C-4-C-7' bond. Compounds 1, 7, and 9 showed inhibitory activities against protein tyrosine phosphatase 1B (PTP1B) with IC50 values of 1.3, 1.8, and 1.6 µM, respectively.


Assuntos
Medicamentos de Ervas Chinesas/isolamento & purificação , Eucalyptus/química , Sesquiterpenos de Eudesmano/isolamento & purificação , Sesquiterpenos de Guaiano/isolamento & purificação , Medicamentos de Ervas Chinesas/química , Medicamentos de Ervas Chinesas/farmacologia , Concentração Inibidora 50 , Estrutura Molecular , Ressonância Magnética Nuclear Biomolecular , Folhas de Planta/química , Proteína Tirosina Fosfatase não Receptora Tipo 1/antagonistas & inibidores , Sesquiterpenos , Sesquiterpenos de Eudesmano/química , Sesquiterpenos de Eudesmano/farmacologia , Sesquiterpenos de Guaiano/química , Sesquiterpenos de Guaiano/farmacologia
13.
J Nat Prod ; 78(4): 754-61, 2015 Apr 24.
Artigo em Inglês | MEDLINE | ID: mdl-25781655

RESUMO

Seven new limonoids, dysomollides A-G (1-7), and two new cycloapotirucallane-type triterpenoids, dysomollins A and B (8 and 9), together with three known compounds, dysoxylumin A (10) and toonapubesins A (11) and B (12), were isolated from the twigs of Dysoxylum mollissimum var. glaberrimum. The structures of 1-9 were elucidated on the basis of spectroscopic methods. Compound 10 showed inhibitory activity against A549 cells with an IC50 value of 2.1 µM, and compound 11 exhibited activity against P388 cells with an IC50 value of 6.7 µM.


Assuntos
Medicamentos de Ervas Chinesas/isolamento & purificação , Limoninas/isolamento & purificação , Meliaceae/química , Triterpenos/isolamento & purificação , Animais , Antineoplásicos Fitogênicos/química , Doxorrubicina/farmacologia , Ensaios de Seleção de Medicamentos Antitumorais , Medicamentos de Ervas Chinesas/química , Medicamentos de Ervas Chinesas/farmacologia , Células HL-60 , Humanos , Concentração Inibidora 50 , Leucemia P388 , Limoninas/química , Limoninas/farmacologia , Estrutura Molecular , Triterpenos/química , Triterpenos/farmacologia
14.
J Asian Nat Prod Res ; 14(10): 929-39, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-23046464

RESUMO

Five new apotirucallane-type triterpenoids (1-5), named agladorals A-E, and 28 known compounds (20 triterpenoids and 8 rocaglamides) were isolated from the twigs of Aglaia odorata var. microphyllina. Their structures were elucidated by spectroscopic analysis.


Assuntos
Aglaia/química , Medicamentos de Ervas Chinesas/isolamento & purificação , Triterpenos/isolamento & purificação , Medicamentos de Ervas Chinesas/química , Estrutura Molecular , Ressonância Magnética Nuclear Biomolecular , Caules de Planta/química , Triterpenos/química
15.
J Med Chem ; 55(18): 8183-7, 2012 Sep 27.
Artigo em Inglês | MEDLINE | ID: mdl-22934600

RESUMO

Eucalyptin A (1), together with two known compounds 2 and 3 exhibiting potent inhibition on HGF/c-Met axis, was discovered from the fruits of Eucalyptus globulus. 1 possessed an unprecedented carbon framework of phloroglucinol-coupled sesquiterpenoid, and its structure was elucidated by spectroscopic method and ECD calculation. A brief structure-activity relationship discussion indicated that the coupling of a phloroglucinol and a sesquiterpenoid is essential for the activity.


Assuntos
Eucalyptus/química , Fator de Crescimento de Hepatócito/antagonistas & inibidores , Floroglucinol/química , Extratos Vegetais/química , Extratos Vegetais/farmacologia , Proteínas Proto-Oncogênicas c-met/antagonistas & inibidores , Sesquiterpenos/química , Animais , Movimento Celular/efeitos dos fármacos , Proliferação de Células/efeitos dos fármacos , Cães , Fator de Crescimento de Hepatócito/farmacologia , Humanos , Células Madin Darby de Rim Canino , Inibidores de Proteínas Quinases/química , Inibidores de Proteínas Quinases/farmacologia , Relação Estrutura-Atividade , Ativador de Plasminogênio Tipo Uroquinase/antagonistas & inibidores
16.
Acta Pharmacol Sin ; 33(9): 1147-58, 2012 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-22941284

RESUMO

This review describes the major discoveries of structurally diverse and/or biologically significant compounds from plant resources in China, mainly from the traditional Chinese medicines (TCMs) since the establishment of our research group in 1999. In the past decade, a large array of biologically significant and novel structures has been identified from plant resources (or TCM) in our laboratory. The structural modification of several biologically important compounds led to more than 400 derivatives, some of which exhibited significantly improved activities and provided opportunities to elucidate the structure-activity relationship of the related compound class. These findings are important for drug discovery and help us understand the biological basis for the traditional applications of these plants in TCM.


Assuntos
Medicamentos de Ervas Chinesas/farmacologia , Medicina Tradicional Chinesa , Plantas Medicinais/química , China , Desenho de Fármacos , Descoberta de Drogas/métodos , Medicamentos de Ervas Chinesas/química , Medicamentos de Ervas Chinesas/isolamento & purificação , Humanos , Pesquisa , Relação Estrutura-Atividade
17.
J Asian Nat Prod Res ; 14(3): 224-34, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-22251139

RESUMO

Three new sesquiterpenes (1-3), (6R,7S,11R,10S)-15-hydroxy-sesquisabinene hydrate (1), (6R,7R,11S,10S)-15-hydroxy-sesquisabinene hydrate (2), and (6R,7R,10S)-15-hydroxy-zingiberenol (3), along with three known compounds, were isolated from the stems of Dysoxylum oliganthum; and three new isodaucane (salvionane) sesquiterpenes, namely isodauc-6-ene-10ß,14-diol (4), 4-epi-isodauc-6-ene-10ß,14-diol (5), and 4-epi-6α,10ß-dihydroxy-artabotrol (6) together with 15 known compounds were isolated from the twigs and leaves of D. excelsum. Their structures were established on the basis of extensive spectroscopic analysis and chemical shifts. The absolute configuration of C-10 in compounds 1-3 of a rare class was determined by using Snatzke's method.


Assuntos
Antineoplásicos Fitogênicos/isolamento & purificação , Medicamentos de Ervas Chinesas/isolamento & purificação , Meliaceae/química , Sesquiterpenos/isolamento & purificação , Antineoplásicos Fitogênicos/química , Antineoplásicos Fitogênicos/farmacologia , Ensaios de Seleção de Medicamentos Antitumorais , Medicamentos de Ervas Chinesas/química , Medicamentos de Ervas Chinesas/farmacologia , Células HL-60 , Humanos , Meliaceae/genética , Estrutura Molecular , Sesquiterpenos Monocíclicos , Ressonância Magnética Nuclear Biomolecular , Folhas de Planta/química , Caules de Planta/química , Sesquiterpenos/química , Sesquiterpenos/farmacologia , Estereoisomerismo
18.
PLoS One ; 6(12): e28130, 2011.
Artigo em Inglês | MEDLINE | ID: mdl-22174772

RESUMO

BACKGROUND: Use of a risk of bias (ROB) tool has been encouraged and advocated to reviewers writing systematic reviews (SRs) and meta-analyses (MAs). Selective outcome reporting and other sources of bias are included in the Cochrane ROB tool. It is important to know how this specific tool for assessing ROB has been applied since its release. Our objectives were to evaluate whether and to what extent the new Cochrane ROB tool has been used in Chinese journal papers of acupuncture. METHODS: We searched CBM, TCM database, CJFD, CSJD, and the Wanfang Database from inception to March 2011. Two reviewers independently selected SRs that primarily focused on acupuncture and moxibustion, from which the data was extracted and analyzed. RESULTS: A total of 836 SRs were identified from the search, of which, 105 were included and four are awaiting assessment. Thirty-six of the 105 SRs were published before release of the Cochrane ROB tool (up to 2009). Most used the Cochrane Handbook 4.2 or Jadad's scale for risk or quality assessment. From 2009 to March 2011 69 SRs were identified. While "risk of bias" was reported for approximately two-thirds of SRs, only two SRs mentioned use of a "risk of bias tool" in their assessment. Only 5.8% (4/69) of reviews reported information on all six domains which are involved in the ROB tool. A risk of bias graph/summary figure was provided in 2.9% (2/69) of reviews. Most SRs gave information about sequence generation, allocation concealment, blindness, and incomplete outcome data, however, few reviews (5.8%; 4/69) described selective reporting or other potential sources of bias. CONCLUSIONS: The Cochrane "risk of bias" tool has not been used in all SRs/MAs of acupuncture published in Chinese Journals after 2008. When the ROB tool was used, reporting of relevant information was often incomplete.


Assuntos
Terapia por Acupuntura , Metanálise como Assunto , Publicações Periódicas como Assunto , Viés de Publicação , Literatura de Revisão como Assunto , China , Humanos
20.
J Nat Prod ; 73(7): 1301-5, 2010 Jul 23.
Artigo em Inglês | MEDLINE | ID: mdl-20593838

RESUMO

Six new oxygenated daphnane-type diterpenoids, trigoxyphins A-F (1-6), a phenanthrene-type diterpenoid, trigoxyphin G (7), and two known compounds were isolated from twigs of Trigonostemon xyphophylloides. Their structures were established using spectroscopic methods. Compounds 1 and 2 exhibited strong cytotoxic activity against HL60 (IC(50): 0.27 and 0.49 microM) and A549 (IC(50): 7.5 and 4.9 microM) tumor cell lines, respectively.


Assuntos
Diterpenos/isolamento & purificação , Medicamentos de Ervas Chinesas/isolamento & purificação , Euphorbiaceae/química , Fenantrenos/isolamento & purificação , Diterpenos/química , Diterpenos/farmacologia , Ensaios de Seleção de Medicamentos Antitumorais , Medicamentos de Ervas Chinesas/química , Medicamentos de Ervas Chinesas/farmacologia , Células HL-60 , Humanos , Estrutura Molecular , Ressonância Magnética Nuclear Biomolecular , Fenantrenos/química , Fenantrenos/farmacologia , Caules de Planta/química
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