RESUMO
BACKGROUND: Left atrial appendage occlusion (LAAO) has been considered an alternative treatment to prevent embolic stroke in patients with nonvalvular atrial fibrillation (NVAF). However, it carries a risk of general anesthesia or esophageal injury if guided by transesophageal echocardiography (TEE). AIMS: We aimed to investigate the feasibility and safety of minimal LAAO (MLAAO) using Watchman under fluoroscopy guidance alone in patients with NVAF. METHODS: A total of 249 consecutive patients with NVAF who underwent LAAO using the WATCHMAN device were divided into two groups: the Standard LAAO (SLAAO) group and the MLAAO group. Procedural characteristics and follow-up results were compared between the two groups. RESULTS: There was no statistically significant difference in the rate of successful device implantation (p > 0.05). Fluoroscopy time, radiation exposure dose, and contrast medium usage in the MLAAO group were higher than those in the SLAAO group (p < 0.001). The procedure time and hospitalization duration were significantly lower in the MLAAO group than those in the SLAAO group (p < 0.001). The occluder compression ratio, measured with fluoroscopy, was lower than that measured with TEE (17.63 ± 3.75% vs. 21.69 ± 4.26%, p < 0.001). Significant differences were observed between the SLAAO group and the MLAAO group (p < 0.05) in terms of oropharyngeal/esophageal injury, hypotension, and dysphagia. At 3 months after LAAO, the MLAAO group had a higher incidence of residual flow within 1-5 mm compared to the SLAAO group, although the difference was not statistically significant. CONCLUSION: MLAAO guided by fluoroscopy, instead of TEE, without general anesthesia simplifies the operational process and may be considered safe, effective, and feasible, especially for individuals who are unable to tolerate or unwilling to undergo TEE or general anesthesia.
Assuntos
Apêndice Atrial , Fibrilação Atrial , Humanos , Apêndice Atrial/diagnóstico por imagem , Resultado do Tratamento , Cateterismo Cardíaco , Ecocardiografia Transesofagiana/efeitos adversos , Fibrilação Atrial/diagnóstico , Fibrilação Atrial/diagnóstico por imagem , FluoroscopiaRESUMO
The Aim of this study was to investigate the long-term impact of left atrial appendage occlusion (LAAO) on cardiac function and structure in patients with non-valvular atrial fibrillation (NVAF). 157 patients with NVAF who underwent LAAO or combined with ablation were included and divided into simple LAAO group or combined group. Long term impact of LAAO on cardiac function and structure were evaluated. Results showed that the procedures were performed successfully with 6.4% complications. During follow-up, there was a significant decrease of left atrial anteroposterior diameter (LAAD) at 6 months and a significant increase of left ventricular end-diastolic dimension (LVEDD) at 12 months after LAAO. A significant decrease in plasma N-terminal pro-brain natriuretic peptide (NT-proBNP) was noted at 3 months, 6 months and 12 months after procedure. There was a significant decrease of LAAD, LVEDD, left ventricular end-systolic dimension (LVESD) and NT-proBNP levels in combined group at 3 months, 6 months and 12 months post- procedure, while an increase of left ventricular ejection fraction (LVEF). Meanwhile, no significant change of LAAD, LVEDD, LVESD, NT-proBNP and LVEF was seen in simple LAAO group at 3 months follow-up, but a decrease of NT-proBNP during 6 months and 12 months follow-up. Compared with simple LAAO group, combined group was associated with a significant increase of residual flow. In conclusion, LAAO has no significant effect on cardiac structure and function but can significantly reduce NT-proBNP. The improvement of cardiac structure and function in combined therapy comes from the result of ablation, not LAAO.
Assuntos
Apêndice Atrial , Fibrilação Atrial , Ablação por Cateter , Peptídeo Natriurético Encefálico , Humanos , Fibrilação Atrial/cirurgia , Fibrilação Atrial/fisiopatologia , Fibrilação Atrial/sangue , Apêndice Atrial/cirurgia , Apêndice Atrial/diagnóstico por imagem , Apêndice Atrial/fisiopatologia , Masculino , Feminino , Pessoa de Meia-Idade , Idoso , Estudos Retrospectivos , Peptídeo Natriurético Encefálico/sangue , Ablação por Cateter/métodos , Resultado do Tratamento , Fragmentos de Peptídeos/sangue , Função Ventricular Esquerda/fisiologia , Volume Sistólico , SeguimentosRESUMO
Two new quinazoline alkaloids versicomides G-H (1 and 2), together with seven known compounds, were isolated from Aspergillus versicolor HYQZ-215 obtained from the sediment of Qarhan Salt Lake. Their structures were elucidated by NMR, HRESIMS, and quantum chemical ECD calculations data. The antimicrobial activities of these compounds were evaluated against seven agricultural pathogenic fungi and eight clinically drug-resistant bacteria.
Assuntos
Alcaloides , Anti-Infecciosos , Aspergillus , Estrutura Molecular , Quinazolinas/farmacologia , Quinazolinas/química , Alcaloides/química , Anti-Infecciosos/farmacologia , Anti-Infecciosos/químicaRESUMO
OBJECTIVE: To explore the mechanisms of Qianlie Jindan Tablets (QLJD) acting on chronic nonbacterial prostatitis (CNP) in rats based on non-targeted urine metabolomics. METHODS: According to the body mass index, we equally randomized 30 eight-week-old male SD rats into a blank control, a CNP model control and a QLJD medication group. We established the CNP model in the latter groups and, from the 4th day of modeling, treated the rats in the blank and model control groups intragastrically with normal saline and those in the QLJD medication group with QLJD suspension, qd, for 30 successive days. Then we detected the changes in the metabolites of the rats by ultra-high-performance liquid chromatography-tandem mass spectrometry, and identified the differential metabolites in different groups by multivariate statistical analysis, followed by functional annotation of the differential metabolites. RESULTS: Eight common metabolites were identified by metabolomics analysis, of which 5 were decreased in the CNP model controls and increased in the QLJD medication group, while the other 3 increased in the former and decreased in the latter group. Creatinine and genistein were important differential metabolites, and the arginine and proline metabolic pathways and isoflavone biosynthesis pathways were the main ones for QLJD acting on CNP. Compared with the blank controls, the model controls showed up-regulated arginine and proline metabolic pathways, increased production of creatinine, down-regulated isoflavone biosynthetic pathway and decreased production of genistein. The above changes in the model controls were all reversed in the QLJD medication group. CONCLUSION: QLJD acts effectively on CNP in male rats by regulating L-arginine and proline metabolic pathways, as well as the isoflavone biosynthesis pathway and naringenin metabolism.
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Medicamentos de Ervas Chinesas , Metabolômica , Prostatite , Ratos Sprague-Dawley , Masculino , Animais , Ratos , Prostatite/metabolismo , Prostatite/urina , Prostatite/tratamento farmacológico , Metabolômica/métodos , Comprimidos , Cromatografia Líquida de Alta Pressão , Arginina/metabolismo , Doença Crônica , Genisteína/urina , Prolina/urina , Prolina/metabolismo , Modelos Animais de Doenças , Creatinina/urina , Creatinina/metabolismo , Espectrometria de Massas em TandemRESUMO
BACKGROUND: The specific pathogenesis of atrial fibrillation (AF) remains unclear. In this study, we examined the expression of differential messenger RNAs (mRNAs), circular RNAs (circRNAs), and long-stranded noncoding RNAs (lncRNAs) from human peripheral blood mononuclear cells to initially construct a circRNA/lncRNA-miRNA-mRNA ceRNA regulatory network to explore the pathogenesis of AF and to screen for potential biomarkers. METHODS: A total of four pairs of AF cases and healthy subjects were selected to detect differentially expressed mRNAs, circRNAs, and lncRNAs in peripheral blood mononuclear cells by microarray analysis. And 20 pairs of peripheral blood from AF patients and healthy subjects were selected for validation of mRNA, circRNA, and lncRNA by quantitative real-time PCR (qRT-PCR).The relevant ceRNA networks were constructed by GO and KEGG and correlation analysis. RESULTS: The results showed that compared with healthy subjects, there were 813 differentially expressed mRNAs (DEmRNAs) in peripheral blood monocytes of AF, including 445 upregulated genes and 368 downregulated genes, 120 differentially expressed circRNAs (DEcircRNAs), including 65 upregulated and 55 downregulated, 912 differentially expressed lncRNAs (DElncRNAs), including 531 upregulated and 381 downregulated lncRNAs. GO and KEGG analysis of DERNA revealed the biological processes and pathways involved in AF. Based on microarray data and predicted miRNAs, a ceRNA network containing 34 mRNAs, 212 circRNAs, 108 lncRNAs, and 38 miRNAs was constructed. CONCLUSION: We revealed a novel ceRNA network in AF and showed that downregulated XIST, circRNA_2773, and CADM1 were negatively correlated with miR-486-5p expression and had a potential targeting relationship with miR-486-5p.
Assuntos
Fibrilação Atrial , MicroRNAs , RNA Longo não Codificante , Humanos , MicroRNAs/genética , RNA Circular/genética , RNA Mensageiro/genética , RNA Longo não Codificante/genética , Leucócitos Mononucleares/metabolismo , Redes Reguladoras de Genes , Biomarcadores , Molécula 1 de Adesão Celular/genéticaRESUMO
To optimize the extraction process of Chuanxiong Rhizoma-Gastrodiae Rhizoma herb pair by network pharmacology combined with analytic hierarchy process(AHP)-entropy weight method and multi-index orthogonal test. The potential active components and targets of Chuanxiong Rhizoma-Gastrodiae Rhizoma were screened by network pharmacology and molecular docking, and the process evaluation indexes were determined with reference to the Chinese Pharmacopoeia(2020 edition). The core components of Chuanxiong Rhizoma-Gastrodiae Rhizoma were determined as gastrodin, parishin B, parishin C, parishin E, ferulic acid, and 3-butylphthalide. With the extraction volume of each indicator and yield of dry extract as comprehensive evaluation indicators, the extraction conditions were optimized by the AHP-entropy weight method and orthogonal test as the ethanol volume of 50%, the solid-liquid ratio of 1â¶8(g·mL~(-1)), extraction for three times, and 1.5 h each time. Through network pharmacology and molecular docking, the process evaluation index was determined, and the optimized process was stable and reproducible for the extraction of Chuanxiong Rhizoma-Gastrodiae Rhizoma herb pair, which could provide reference for in-depth research.
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Medicamentos de Ervas Chinesas , Medicamentos de Ervas Chinesas/farmacologia , Farmacologia em Rede , Simulação de Acoplamento Molecular , RizomaRESUMO
BACKGROUND The left atrial appendage (LAA) is an organ with neuroendocrine function. It remains unclear whether left atrial appendage closure (LAAC) has physiological effects on neuroendocrine function in patients with nonvalvular atrial fibrillation (NVAF). In the present study, we aimed to investigate the effects of LAAC on neuroendocrine function in patients with NVAF. MATERIAL AND METHODS We enrolled 20 patients with NVAF treated by LAAC in Jiangsu Taizhou People's Hospital from October 2019 to October 2020. Blood samples were collected 1 day before LAAC and 12 months after LAAC. Plasma concentrations of adrenaline, aldosterone, pro-atrial natriuretic peptide (NT-proANP), and N-terminal pro-B-type natriuretic peptide (NT-proBNP) were measured. RESULTS LAAC was successfully performed in all patients, without serious complications. Compared with the preoperative levels, there was no significant difference in the levels of NT-proANP, NT-proBNP, and epinephrine at 12 months after LAAC (P>0.05). However, there was a significant decrease in aldosterone level at 12 months post-procedure (209.04±132.98 pg/ml) compared with pre-procedure baseline (279.08±166.88 pg/ml, P=0.04). There was no correlation between the compression rate of the occlusion and the reduction of aldosterone (Kendall's Tau-b=0.159, P=0.351). CONCLUSIONS LAAC can be safely and effectively performed in NVAF patients, and showed no significant effect on the adrenergic system and natriuretic peptides, but had an influence on the RAAS.
Assuntos
Apêndice Atrial , Fibrilação Atrial , Adrenérgicos , Aldosterona , Apêndice Atrial/cirurgia , Fator Natriurético Atrial , Epinefrina , Humanos , Peptídeo Natriurético Encefálico , Resultado do TratamentoRESUMO
Purpose: This study sought to investigate the predictive factors for atrial fibrillation (AF) recurrence in patients after radiofrequency ablation (RFCA) and construct a nomogram prediction model for providing precious information of ablative strategies. Methods: A total of 221 patients with AF who underwent RFCA were enrolled. Univariate and multivariate Cox regression were used to screen the predictors of recurrence. The receiver operating characteristic (ROC) curve and the Kaplan-Meier (K-M) curve were drawn to analyze the value of predictors. The nomogram model was further constructed to predict the recurrence of AF in patients after RFCA. Results: There were 59 cases of AF recurrence after RFCA. Monocyte count/high-density lipoprotein cholesterol (MHR), AF course (COURSE), coronary heart disease (CHD), and AF type (TYPE) were the independent risk factors for predicting AF recurrence after RFCA. Accordingly, a nomogram prediction model based on MHR, COURSE, CHD, and TYPE was constructed with a C-index of 0.818 (95% CI: 0.681â¼0.954), while the C-index of verification was 0.802 (95% CI: 0.658â¼0.946). Conclusions: Preoperative MHR, COURSE, CHD, and TYPE were independent risk factors for predicting recurrence of AF after RFCA. The nomogram model based on MHR, COURSE, CHD, and TYPE can be used to predict the recurrence of AF after RFCA accurately and individually.
Assuntos
Fibrilação Atrial , Ablação por Cateter , Fibrilação Atrial/cirurgia , Ablação por Cateter/efeitos adversos , HDL-Colesterol , Humanos , Nomogramas , Recidiva , Fatores de Risco , Resultado do TratamentoRESUMO
PURPOSE: This work was to identify the function and mechanism of miR-219a-5p in regulating knee osteoarthritis (KOA). METHODS: Rat fibroblast-like synoviocytes (FLSs) were isolated to construct KOA cell model by lipopolysaccharide and adenosine triphosphate treatment. miR-219a-5p and FBXO3 expression in FLSs was modulated by transfection. Flow cytometry was executed to research FLSs apoptosis. Caspase-1 and IL-1ß expression in FLSs was researched by immunofluorescence. The binding between miR-219a-5p and FBXO3 was identified by dual luciferase reporter gene assay. KOA rat model and miR-219a-5p up-modulation KOA rat model were constructed. Step size of rats was analyzed. Knee joints of rats were experienced Safranin O-fast green staining to evaluate the knee joint injury. FBXO3, pyroptosis-associated proteins, and IL-1ß and IL-18 expression in FLSs and articular cartilage tissues of rats were assessed by Western blot, qRT-PCR and Enzyme-linked immunosorbent assay. RESULTS: KOA cell model had higher apoptosis percentage, expression of pyroptosis-associated proteins, and IL-1ß and IL-18 level. miR-219a-5p up-modulation decreased the above indicators, whereas miR-219a-5p down-modulation increased the above indicators. FBXO3 expression was directly repressed by miR-219a-5p. Loss of FBXO3 suppressed the above indicators. FBXO3 counteracted the suppression of miR-219a-5p on the above indicators. miR-219a-5p agomir attenuated knee joint injury, increased step size of KOA rats, and reduced FBXO3, pyroptosis-associated proteins and level of IL-1ß and IL-18 in the articular cartilage tissues of KOA rats. CONCLUSION: miR-219a-5p suppressed the pyroptosis in KOA by inactivating the NLRP3 signaling via targeting FBXO3, which might be a promising target for ameliorating KOA in the clinic.
Assuntos
MicroRNAs , Osteoartrite do Joelho , Trifosfato de Adenosina , Animais , Caspase 1 , Proteínas F-Box , Interleucina-18 , Lipopolissacarídeos , MicroRNAs/genética , MicroRNAs/metabolismo , Proteína 3 que Contém Domínio de Pirina da Família NLR/genética , Osteoartrite do Joelho/genética , Osteoartrite do Joelho/metabolismo , Piroptose , RatosRESUMO
This study observed the pharmacological effects of Feilike Mixture(FLKM) in stopping cough, eliminating phlegm, and relieving asthma through animal experiments, and explored its mechanism using network pharmacology. The antitussive effect was detected by citric acid-induced guinea pig cough model, the expectorant effect by mouse phenol red excretion experiment and lipopolysaccharide-induced mucus hypersecretion rat model, and the antiasthmatic effect by histamine phosphate-induced guinea pig asthma model. The chemical components of FLKM were collected by TCMSP, TCMID, TCMIP, and BATMAN-TCM databases and literature search, and the potential active components were screened through ADMETlab 2.0. The targets of FLKM were obtained by STITCH, SwissTargetPrediction, and TCMSP, and the symptom targets of cough, phlegm, and asthma were acquired through SymMap database. After taking the intersection of FLKM targets and symptom targets, this study used the OECloud tool to perform Gene Ontology(GO) and Kyoto Encyclopedia of Genes and Genomes(KEGG) enrichment analysis. RESULTS:: demonstrated that FLKM 0.43-1.74 g·kg~(-1) reduced the number of coughs in guinea pigs within 3 min(P<0.05, P<0.01), and FLKM 6-12 g·kg~(-1) increased the tracheal phenol red excretion in mice(P<0.01). Moreover, FLKM 2-8 g·kg~(-1) inhibited the number of goblet cells(P<0.05, P<0.01), and FLKM 7-11.2 g·kg~(-1) prolonged the incubation period of asthma(P<0.05). A total of 115 potential active components and 910 targets of FLKM were obtained through network pharmacological analysis. FLKM had 27, 12, and 7 targets for stopping cough, eliminating phlegm, and relieving asthma, respectively. The GO and KEGG enrichment analysis found that there were commonalities and characteristics, among which cytokine-cytokine receptor interaction and infectious disease-related signaling pathway were shared. FLKM has a good effect of stopping cough, eliminating phlegm, and relieving asthma through animal experiments and network pharmacology.
Assuntos
Experimentação Animal , Asma , Medicamentos de Ervas Chinesas , Animais , Asma/induzido quimicamente , Asma/tratamento farmacológico , Tosse/tratamento farmacológico , Medicamentos de Ervas Chinesas/farmacologia , Cobaias , Camundongos , Muco , Farmacologia em Rede , Fenolsulfonaftaleína , RatosRESUMO
The pharmacology of Chinese medicine is an academic discipline that studies the interaction between Chinese medicine and organism(including pathogens) by modern science and technology under the guidance of traditional Chinese medicine(TCM) theories. However, the pharmacology of Chinese medicine is mainly guided by the theories, techniques, and methods of modern medicine in the development, and TCM theories have been ignored to a certain extent, which does not conform to the action characteristics of Chinese medicine in essence. Since systematic research ideas, strategies, methods, and technologies that conform to the characteristics of TCM have not been established, it is unable to reveal the scientific connotation of TCM in the prevention and treatment of diseases. Therefore, according to the trend of the modern development of TCM and the research status of pharmacology of Chinese medicine, this study put forward the concept of pharmacology of combination of disease and syndrome and expounded the relevant background, content, methods, and significance of this concept. It is expected to improve the standardization of pharmacology of combination of disease and syndrome, guide the safe medication, provide new references for the scientific development of pharmacology of Chinese medicine, and promote the development of the modernization of Chinese medicine.
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Medicamentos de Ervas Chinesas , Medicina Tradicional Chinesa , Humanos , Mudança Social , SíndromeRESUMO
Single-cell transcriptome sequencing(scRNA-seq) can be used to analyze the expression characteristics of the transcriptome at the level of individual cell, and discover the heterogeneity of gene expression in individual cell that is "diluted" or averaged in study of group organization. The scRNA-seq, with the characteristics of standardization, high-throughput, and high integration, can greatly simplify the experimental operation and significantly reduce the consumption of reagents. At the same time, a variety of cells are screened and the gene expression patterns are analyzed at the single-cell level to provide a more efficient detection technique and more rich and accurate information for drug research. In the field of traditional Chinese medicine(TCM), the scRNA-seq is still a new technology, but the individual and precision concepts embodied by scRNA-seq and the theory of TCM syndrome differentiation and treatment have reached the same effect between the micro and macro aspects. This study tried to broaden the thinking for the modernization of TCM by introducing the development of scRNA-seq technology and its application in modern drug research and discussing the application prospects of scRNA-seq in TCM research.
Assuntos
Medicina Tradicional Chinesa , Transcriptoma , Perfilação da Expressão Gênica , Padrões de Referência , Análise de Sequência de RNA , Análise de Célula ÚnicaRESUMO
Compound Renshen Buqi Granules have been widely used to treat chronic heart failure(CHF) due to Qi deficiency and blood stasis, but the mechanism of action remains unclear. This paper explored the pathogenesis of CHF due to Qi deficiency and blood stasis and the intervention mechanism of Compound Renshen Buqi Granules based on quantitative proteomics for uncovering the biological basis. SD rats were divided into the normal control(N) group, normal+Compound Renshen Buqi Granules(ND) group, model(M) group, model+Compound Renshen Buqi Granules(D) group, and positive control(Y) group. The rat model of CHF due to Qi deficiency and blood stasis was established by ligation of the left anterior descending(LAD) coronary artery and chronic sleep deprivation. The rats in the ND group and D group were provided with Compound Renshen Buqi Granules, while those in the Y group received valsartan. Six weeks later, the serum was sampled and the data-dependent acquisition(DDA) was employed for the non-targeted quantitative proteomics analysis of the differences in protein expression among groups, followed by the targeted analysis of differentially expressed proteins(DEPs) generated by data-independent acquisition(DIA). Compared with the N group, the rats in the M group pre-sented with decreased body weight, grip strength, and pulse amplitude and increased RGB value on the tongue surface. The pathomorphological examination revealed inflammatory cell infiltration, cell degeneration and necrosis, tissue fibrosis, etc. After the intervention with Compound Renshen Buqi Granules, multiple indicators were reversed. As demonstrated by proteomics results, there were 144 and 111 DEPs found in the M group and ND group in comparison with the N group. Compared with the M group, 107 and 194 DEPs were found in the D group and the Y group, respectively. Compared with the ND group, 119 DEPs were detected in the D group. As illustrated by DIA-based verification, the quantitative results of six proteins in each group were consistent with those by DDA. The syndrome indicators and pathomorphological examination results demonstrated that the protein expression profile of rats with CHF due to Qi deficiency and blood stasis changed obviously. However, Compound Renshen Buqi Granules were able to reverse the differential expression of immune proteins to regulate CHF of Qi deficiency and blood stasis syndrome, which has provided clues for figuring out the pathogenesis of CHF due to Qi deficiency and blood stasis and the intervention mechanism of Compound Renshen Buqi Granules.
Assuntos
Insuficiência Cardíaca , Panax , Animais , Insuficiência Cardíaca/tratamento farmacológico , Medicina Tradicional Chinesa , Proteômica , Qi , Ratos , Ratos Sprague-DawleyRESUMO
In order to improve the mechanical and dielectric properties of radome cyanate, a synergistic reinforcement method is employed to develop a resin-based ternary-composite with high heat-resistance and preferable radar-band transmission, which is expected to be applied to fabricate radomes capable of resisting high temperature and strong electric field. According to copolymerization characteristics and self-curing mechanism, epoxy resin (EP) and bismaleimide (BMI) are employed as reinforcements mixed into a cyanate ester (CE) matrix to prepare CE/BMI/EP composites of a heat-resistant radome material by high-temperature viscous-flow blending methods under the catalysis of aluminum acetylpyruvate. The crystallization temperature, transition heat, and reaction rate of cured polymers were tested to analyze heat-resistance characteristics and evaluate material synthesis processes. Scanning electron microscopy was used to characterize the micro-morphology of tensile fracture, which was combined with the tensile strength test and dynamic thermomechanical analysis to investigate the composite modifications on tenacity and rigidity. Weibull statistics were performed to analyze the experimental results of the dielectric breakdown field, and the dielectric-polarization and wave-transmission performances were investigated according to alternative current dielectric spectra. Compared with the pure CE and the CE composites individually reinforced by EP or BMI, the CE/BMI/EP composite acquires the most significant amelioration in both the mechanical and electrical insulation performances as indicated by the breaking elongation and dielectric breakdown strength being simultaneously improved by 40%, which are consistently manifested by the obviously increased transverse lines uniformly distributed on the fracture cross-section. Furthermore, the glass-transition temperature of CE/BMI/EP composite reaches the highest values of nearly 300 °C, with the relative dielectric constant and dielectric loss being mostly reduced to less than 3.2 and 0.01, respectively. The experimental results demonstrate that the CE/BMI/EP composite is a highly-qualified wave-transmission material with preferences in mechanical, thermostability, and electrical insulation performances, suggesting its prospective applications in low-frequency transmittance radomes.
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Cianatos/química , Resinas Epóxi/química , Teste de Materiais , Temperatura Alta , Propriedades de SuperfícieRESUMO
Cerebral ischemia is also known as ischemic stroke. In recent years, research on neuroprotection after ischemia has became a hot spot as stroke can result in symptoms of nerve damages such as hemiplegia, learning and memory disorders. The key factors that cause the death of cells include excitotoxicity, oxidative damage, nitrosative stress and inflammation. However, there is no effective preparation for the treatment of post-ischemic nerve defects at present, so it is urgent to find and develop effective drugs for the treatment of nerve damages after ischemia. Traditional Chinese medicine has advantages and potentials in the treatment of neurological diseases. Many scholars have carried out related researches on the active ingredients of traditional Chinese medicine and achieved some good results. In this context, the researches on the neuroprotective effects of traditional Chinese medicines such as tetramethylpyrazine, butylphthalide and total saponins of Panax notoginseng were reviewed. The author found that the neuroprotective researches of traditional Chinese medicine mostly focused on anti-apoptosis, anti-inflammatory and anti-oxidative stress, but those effects were not sounique to the nervous system. Furthermore, most ingredients of traditional Chinese medicine showed a poor water-soluble property. In view of the research status and existing problems of traditional Chinese medicine in nerve injury, the suggestions for the research and development of the potent neuroprotective agents were proposed in this study from the perspective of pharmacological mechanism research and preparation theory.
Assuntos
Isquemia Encefálica/tratamento farmacológico , Infarto Cerebral/tratamento farmacológico , Medicamentos de Ervas Chinesas/uso terapêutico , Fármacos Neuroprotetores/uso terapêutico , Benzofuranos/uso terapêutico , Humanos , Medicina Tradicional Chinesa , Panax notoginseng , Pirazinas/uso terapêutico , Saponinas/uso terapêuticoRESUMO
BACKGROUND: It is hardly to reconstruct a huge defect of lower lip by using of partial flap which brings no mouth closing functional problem. In this study, we would like to introduce our experience in large full-thickness vermilion and lower lip/chin defects reconstruction, and also focus on the evaluation of the surgery effects. METHODS: The large lower lip and chin (include vermilion) reconstruction were performed in Sichuan Provincial People's Hospital (2012-2015). The surgery experience was introduced in this study first. In the following section, after a statement of these basic problems, various situations involving are investigated, such as the surgical effects of aesthetic and function that were evaluated through a visual analogue scale (VAS) by doctors and patients separately. The VAS score assessments of 2 kinds of surgery were collected and compared. RESULTS: A total of 7 patients use the tongue flap alone. Four patients use the combination of the free forearm flap and the anterior ventral tongue flap (COMBO flap). The VAS score of doctors group was significantly lower than the patients group (Pâ<â0.05), and the aesthetic appearance was excellent (>90 points). Language features were not affected (>90 points). Slight mouth opening problems exist on these patients who were used COMBO flaps (>80 points; <90 points). The drooling and drumming gas problems were not observed. These 11 patients had no recurrence within 12 months after the operation. CONCLUSION: The 1:1 ratio between upper and lower lip is crucial to the design of anterior ventral tongue flap which brings with an excellent 3-dimensional morphologic and anatomic structure outcome. The bite block might become an essential operation step for vermilion reconstruction by using of tongue flap. And the COMBO flap may enhance the facial aesthetics and oral function for the reconstruction.
Assuntos
Estética Dentária , Retalhos de Tecido Biológico , Lábio/cirurgia , Boca/fisiopatologia , Procedimentos de Cirurgia Plástica/métodos , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Procedimentos de Cirurgia Plástica/efeitos adversos , Transplante de Pele , Língua/transplanteRESUMO
Effective treatment and real-time monitoring of hepatic cancer are essential. A multifunctional calcium phosphate nanoparticles loading chemotherapeutic agent doxorubicin and magnetic resonance imaging contrast agent diethylenetriaminepentaacetic acid gadolinium (A54-CaP/Gd-DTPA/DOX) was developed for visual targeted therapy of hepatic cancer via T1-weighted MRI in real-time. A54-CaP/Gd-DTPA/DOX exhibited a higher longitudinal relaxivity (6.02â¯mM-1â¯s-1) than commercial MR contrast agent Gd-DTPA (3.3765â¯mM-1â¯s-1). The DOX release from the nanoparticles exhibited a pH dependent behavior. The cellular uptake results showed that the internalization of A54-CaP/Gd-DTPA/DOX into BEL-7402 cells was1.9-fold faster than that of HepG2 cells via A54 binding. In vivo experiments presented that A54-CaP/Gd-DTPA/DOX had higher distribution and longer retention time in tumor tissue than CaP/Gd-DTPA/DOX and free DOX, and also displayed great antitumor efficacy (95.38% tumor inhibition rate) and lower toxicity. Furthermore, the Gd-DTPA entrapped in the nanoparticles could provide T1-weighted MRI for real-time monitoring the progress of tumor treatment.
Assuntos
Fosfatos de Cálcio/química , Doxorrubicina/farmacologia , Neoplasias Hepáticas/tratamento farmacológico , Imageamento por Ressonância Magnética/métodos , Nanopartículas/administração & dosagem , Fragmentos de Peptídeos/química , Animais , Antibióticos Antineoplásicos/administração & dosagem , Antibióticos Antineoplásicos/farmacologia , Apoptose/efeitos dos fármacos , Proliferação de Células/efeitos dos fármacos , Meios de Contraste , Doxorrubicina/administração & dosagem , Feminino , Gadolínio DTPA/química , Humanos , Neoplasias Hepáticas/metabolismo , Neoplasias Hepáticas/patologia , Camundongos , Camundongos Endogâmicos BALB C , Camundongos Nus , Terapia de Alvo Molecular , Nanopartículas/química , Células Tumorais Cultivadas , Ensaios Antitumorais Modelo de XenoenxertoRESUMO
BACKGROUND: With the rising prevalence of allergic rhinitis, the utility of indoor environmental management deserves increasing scrutiny. This research aims at evaluating the ability of air purifiers to be a therapy of allergic rhinitis. METHODS: 32 subjects (25±13.5 years old) diagnosed with allergic rhinitis were selected and HEPA air purifiers placed in their bedrooms for 4 months. Before the intervention and each month, dust samples were collected with a vacuum cleaner and the dust collector assessed for allergen content. Additionally, static dust collectors were left in place all month to collect dust by sedimentation. Particulate matter (PM) was assessed in terms of PMindoor/outdoor ratios. The Rhinitis Quality of Life Questionnaire (RQLQ) was used to assess symptoms. RESULTS: Der p 1 (78 (30,82) ng/g) was the dominant dust mite allergen in air samples of patients' bedroom as well as static collections. Der f1 (444 (345,667) ng/g) was the dominant allergen in bedding. Der f1 levels in both air and bed sampling significantly decreased after initiation of HEPA air purifiers (P<0.05). PM1.0indoor/outdoor, PM2.5indoor/outdoor, PM10indoor/outdoor all decreased (P<0.001) with the HEPA filtration intervention. According to RQLQ data, HEPA filtration was associated with improvements in activity limitation, non-nasal-eye symptoms, practical problems, and nasal symptoms (P<0.001). CONCLUSION: HEPA air purifiers can effectively reduce PM and HDM allergen concentration in the indoor air, and thereby improve clinical manifestations of patients with AR.
Assuntos
Filtros de Ar , Antígenos de Dermatophagoides , Material Particulado , Rinite Alérgica/prevenção & controle , Adulto , Poluição do Ar em Ambientes Fechados/prevenção & controle , Antígenos de Dermatophagoides/análise , Antígenos de Dermatophagoides/imunologia , Feminino , Humanos , Masculino , Material Particulado/análise , Material Particulado/imunologia , Qualidade de VidaRESUMO
Common burden tests have different statistical performance in genetic association studies of rare variants. Here, we compare the statistical performance of burden tests, such as CMC, WST, SUM and extension methods, using the computer-simulated datasets of rare variants with different parameters of sample sizes, linkage disequilibrium (LD), and different numbers of mixed non-associated variants. The simulation results showed that the type I error for all methods is near 0.05. When the rare variants had the same direction of effect, the higher LD and the less non-associated variants, the higher the power of these method, except the data adaptive SUM test. When the direction was different, the power was significantly reduced for all methods. The methods that consider the direction yielded larger statistical power than those methods without considering the effect direction, except the strong LD condition. And the larger the sample size, the larger the power. The statistical performance of burden tests is affected by a variety of factors, including the sample size, effect direction of variants, non-associated variants, and LD. Therefore, when choosing the method and setting the collection unit and weight, the prior biological information of genetic variation should be integrated to improve study efficiency.
Assuntos
Algoritmos , Bioestatística/métodos , Estudos de Associação Genética/métodos , Variação Genética , Simulação por Computador , Predisposição Genética para Doença/genética , Humanos , Desequilíbrio de Ligação , Modelos Logísticos , Modelos GenéticosRESUMO
The comparison on evaluating blood stasis syndrome in sleep deprived rats was carried out by using R, G, B image analysis of Tongue and palm as well as auricle, palm surface laser Doppler flow perfusion. The experiment was performed by means of a small platform on the water environment for sleep deprivation. The rats were weekly weighed at fixed time, and their macroscopic signs were observed; and their tongue and palm images of the control and model group were respectively collected by the SLR camera at the 2nd, 4th and 6th week. Then the color saturation analysis was performed by means of proofreading with the standard colorimetric card. At the same time, the laser dopper flowmetry was used to analyze the perfusion of auricle and foot flow in rats. It turned out that there was no significant difference in the R,G,B value of the tongue and palm in rats between normal group and model group at the first stage(at the 2nd week), so were the perfusion of auricle and foot flow in rats. But at the second stage (at the 4th week), the R value of tongue in model group rats was obviously lower than that in normal group(P<0.01), and the other value (G,B) of tongue in module rats had a decease tendency, but there was no statistical significance. However, the perfusion of left and right auricle flow in model group rats were dramatically decreased as compared with the normal group(P<0.01); there was still no significant difference in the perfusion of the palm between two groups. It was found that R,G,B value in model group had a lower trend as compared with the control group of the tongue and palm images at the third stage (at the 6th week), but no statistically significant difference. The perfusion of left and right auricle flow in model group was constantly decreased as compared with the normal group(P<0.01).Right and left foot blood flow was lower than the normal group, but no statistically significant difference. We can safely conclude that the results of the R, G, B values of the tongue in rats could objectively reflect the characteristics of the rats with blood stasis syndrome, which were consistent with the diagnosis of clinical tongue image. As a method of microcirculation evaluation, the surface laser doppler perfusion of auricle can exhibit the characteristics of blood stasis in model rats, but also was more objective and reproducible. Therefore, the combination of R, G, B value of tongue as well as auricle laser doppler blood flow is more beneficial to the objective evaluation of index in the later study of traditional Chinese medicine blood stasis syndrome model.