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1.
Clin Case Rep ; 12(6): e9055, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38840754

RESUMO

Invasive cribriform carcinoma (ICC) is a rare form of invasive breast carcinoma with good prognosis. To date, case reports considering skin manifestations of ICC are scarce. We herein report a case of pure ICC presenting as an erythematous papule on the nipple with mammary Paget's disease in the epidermis. We aim to bring awareness to skin manifestation of ICC.

2.
Molecules ; 29(5)2024 Feb 24.
Artigo em Inglês | MEDLINE | ID: mdl-38474500

RESUMO

Plasma lipid levels are commonly measured using traditional methods such as triglycerides (TG), high-density lipoprotein (HDL), low-density lipoprotein (LDL), and cholesterol (CH). However, the use of newer technologies, such as nuclear magnetic resonance (NMR) with post-analysis platforms, has made it easier to assess lipoprotein profiles in research. In this study involving ApoE-deficient mice that were fed high-fat diets, significant changes were observed in TG, CH, free cholesterol (FC), and phospholipid (PL) levels within the LDL fraction. The varied proportions of TG in wild-type mice and CH, FC, and PL in ApoE-/- mice were strikingly different in very low-density lipoproteins (VLDL), LDL, intermediate-density lipoprotein (IDL), and HDL. This comprehensive analysis expands our understanding of lipoprotein subfractions and the impacts of the APOE protein and high-fat diet in mouse models. The new testing method allows for a complete assessment of plasma lipids and their correlation with genetic background and diet in mice.


Assuntos
Lipoproteínas HDL , Lipoproteínas LDL , Animais , Camundongos , Colesterol , Triglicerídeos , Apolipoproteínas E , Dieta , Fosfolipídeos , Espectroscopia de Ressonância Magnética
3.
Nutrients ; 16(5)2024 Feb 23.
Artigo em Inglês | MEDLINE | ID: mdl-38474739

RESUMO

The coming of the hyper-aged society in Taiwan prompts us to investigate the relationship between the metabolic status of sarcopenic patients and their most adverse outcome-death. We studied the association between any plasma metabolites and the risk for mortality among older Taiwanese sarcopenic patients. We applied a targeted metabolomic approach to study the plasma metabolites of adults aged ≥65 years, and identified the metabolic signature predictive of the mortality of sarcopenic patients who died within a 5.5-year follow-up period. Thirty-five sarcopenic patients who died within the follow-up period (Dead cohort) had shown a specific plasma metabolic signature, as compared with 54 patients who were alive (Alive cohort). Only 10 of 116 non-sarcopenic individuals died during the same period. After multivariable adjustment, we found that sex, hypertension, tetradecanoyl-carnitine (C14-carnitine), and docosahexaenoic acid (DHA)-containing phosphatidylcholine diacyl (PCaa) C38:6 and C40:6 were important risk factors for the mortality of sarcopenic patients. Low PCaa C38:6 levels and high C14-carnitine levels correlated with an increased mortality risk; this was even the same for those patients with hypertension (HTN). Our findings suggest that plasma PCaa C38:6 and acylcarnitine C14-carnitine, when combined, can be a better early biomarker for evaluating the mortality risk of sarcopenia patients.


Assuntos
Hipertensão , Sarcopenia , Adulto , Humanos , Ácidos Docosa-Hexaenoicos , Fosfatidilcolinas , Carnitina , Biomarcadores
4.
J Clin Sleep Med ; 2024 Mar 28.
Artigo em Inglês | MEDLINE | ID: mdl-38546033

RESUMO

STUDY OBJECTIVES: The gold standard for diagnosing obstructive sleep apnea (OSA) is polysomnography (PSG). However, PSG is a time-consuming method with clinical limitations. This study aimed to create a wireless radar framework to screen the likelihood of two levels of OSA severity (i.e., moderate-to-severe and severe OSA) in accordance with clinical practice standards. METHODS: We conducted a prospective, simultaneous study using the wireless radar system and PSG in a Northern Taiwan sleep center, involving 196 patients. The wireless radar sleep monitor, incorporating hybrid models such as deep neural decision trees, estimated the respiratory disturbance index relative to the total sleep time established by PSG (RDIPSG_TST), by analyzing continuous-wave signals indicative of breathing patterns. Analyses were performed to examine the correlation and agreement between the RDIPSG_TST and apnea-hypopnea index (AHI), results obtained through PSG. Cut-off thresholds for RDIPSG_TST were determined using Youden's index, and multiclass classification was performed, after which the results were compared. RESULTS: A strong correlation (ρ = 0.91) and agreement (average difference of 0.59 events/h) between AHI and RDIPSG_TST were identified. In terms of the agreement between the two devices, the average difference between PSG-based AHI and radar-based RDIPSG_TST was 0.59 events/h, while 187 out of 196 cases (95.41%) fell within the 95% confidence interval of differences. A moderate-to-severe OSA model achieved an accuracy of 90.3% (cut-off threshold for RDIPSG_TST: 19.2 events/h). A severe OSA model achieved an accuracy of 92.4% (cut-off threshold for RDIPSG_TST: 28.86 events/h). The mean accuracy of multiclass classification performance using these cut-off thresholds was 83.7%. CONCLUSIONS: The wireless-radar-based sleep monitoring device, with cut-off thresholds, can provide rapid OSA screening with acceptable accuracy, and also alleviate the burden on PSG capacity. However, to independently apply this framework, the function of determining the radar-based total sleep time requires further optimizations and verification in future work.

5.
Sci Total Environ ; 870: 161733, 2023 Apr 20.
Artigo em Inglês | MEDLINE | ID: mdl-36682561

RESUMO

Submicron and ultrafine particle (UFP) exposure may be epidemiologically and toxicologically linked to pulmonary, neurodegenerative, and cardiovascular diseases. This study explores UFP and fine particle sources using a positive matrix factorization (PMF) model based on PM2.5 chemical compositions and particle number size distributions (PNSDs). The particle chemical composition and size distribution contributions are simultaneously identified to evaluate lung deposition and excess cancer risks. High correlations between the PNSD and chemical composition apportionment results were observed. Fresh and aged traffic particles dominated the number concentrations, while heterogeneous, photochemical reactions and/or regional transport may have resulted in secondary aerosol formation. Fresh and aged road traffic particle sources mostly contributed to the lung deposition dosage in the pulmonary region (~53 %), followed by the tracheobronchial (~30.4 %) and head regions (~16.6 %). However, lung-deposited surface area (LDSA) concentrations were dominated by aged road traffic (~39.2 %) and secondary aerosol (~33.2 %) sources. The excess cancer risks caused by Cr6+, Ni, and As were also mainly contributed to by aged road traffic (~31.7 %) and secondary aerosols (~67 %). The source apportionments based on the physical and chemical properties of aerosol particles are complementary, offering a health impact benchmark of UFPs in a Southeast Asia urban city.


Assuntos
Poluentes Atmosféricos , Neoplasias , Humanos , Idoso , Material Particulado/análise , Poluentes Atmosféricos/análise , Tamanho da Partícula , Monitoramento Ambiental , Pulmão , Aerossóis/análise
6.
Front Pediatr ; 9: 651713, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34136438

RESUMO

Frequent use of antibiotics in preterm infants disturbs their gut microbial balance. In this preliminary observational study, we investigated the effect of different antibiotic regimens, administered during the first week of life, on microbial composition and diversity in very low birth weight (VLBW) preterm infants. We performed fecal sampling of breastfed VLBW infants on days 7, 14, and 30. After excluding stool samples from infants who received probiotics or who were administered antibiotics beyond the age of 7 days, we compared gut microbiota profiles between infants receiving a combination of ampicillin and gentamicin for 3 days (AG group, n = 10) and those receiving a combination of ampicillin and cefotaxime for 7 days (AC group, n = 14) using 16S ribosomal DNA community profiling. We also assessed the changes over time in each group. Compared to the AG group, Enterococcus species were significantly more abundant in the AC group (P = 0.002), especially in 7-day samples (12.3 vs. 0.6%, respectively, P = 0.032). No difference was observed at phylum and genus level over time within each group. Species richness in the AC group decreased significantly in the 14-day (P = 0.038) and 30-day (P = 0.03) samples compared to that in the 7-day sample. The same was observed for microbial evenness; in contrast, no significant difference in Shannon index and beta-diversity was detected between the two groups. Controlling for relevant confounding variables did not change the results. In conclusion, different antibiotic regimens affect the early development of gut microbiota in VLBW preterm infants. Prolonged use of ampicillin and cefotaxime might result in overabundance of Enterococcus. However, given that no significant differences were observed in 1-month samples, bacterial genera appear to continue colonizing the gastrointestinal tract despite previous exposure to antibiotics. The clinical relevance of these findings should be elucidated by further studies.

7.
Microorganisms ; 8(6)2020 May 29.
Artigo em Inglês | MEDLINE | ID: mdl-32486106

RESUMO

The prevalence of vancomycin resistant enterococcus (VRE) carrier-state has been increasing in patients of intensive care unit and it would be a public health threat. Different research groups conducted decolonizing VRE with probiotic and the results were controversial. Therefore, a systemic approach to search for the probiotic species capable of decolonizing VRE is necessary. Thus, VRE was co-cultured with ten probiotic species. The fluctuations of each bacterial population were analyzed by 16S rRNA sequencing. Microbial network analysis (MNA) was exploited to identify the most critical species in inhibiting the VRE population. The MNA-selected probiotic cocktail was then validated for its efficacy in inhibiting VRE, decolonizing VRE from Caco-2 cells via three approaches: exclusion, competition, and displacement. Finally, the expression of VRE virulence genes after co-incubation with the probiotic cocktail were analyzed with quantitative real-time PCR (qRT-PCR). The MNA-selected probiotic cocktail includes Bacillus coagulans, Lactobacillus rhamnosus GG, Lactobacillus reuteri, and Lactobacillus acidophilus. This probiotic combination significantly reduces the population of co-cultured VRE and prevents VRE from binding to Caco-2 cells by down-regulating several host-adhesion genes of VRE. Our results suggested the potential of this four-strain probiotic cocktail in clinical application for the decolonization of VRE in human gut.

8.
Neurochem Int ; 133: 104629, 2020 02.
Artigo em Inglês | MEDLINE | ID: mdl-31816340

RESUMO

Excitotoxicity induced by excessive glutamate has been implicated in many brain disorders. Xanthohumol is a natural product derived from hops (Humulus lupulus L.), which is reported to have glutamate release-inhibiting activity. However, it is unknown whether xanthohumol has protective effects against glutamate-induced excitotoxicity. This study investigated the potential action of xanthohumol in a rat model of excitotoxicity induced by intraperitoneal injection of kainic acid (KA). Xanthohumol (10 or 50 mg/kg) administrated intraperitoneally 30 min prior to KA (15 mg/kg) considerably ameliorated KA-induced seizures, glutamate concentration elevation, and CA3 neuron death. The decrease of mitochondrial fusion protein Mfn-2 and antiapoptotic protein Bcl-2 expression in hippocampal tissues following KA injection were reversed by xanthohumol. Moreover, apoptotic protease activating factor 1 (Apaf-1) expression and caspase-3 activation in the hippocampus were inhibited by xanthohumol. These results suggest that xanthohumol up-regulates Mfn-2 and Bcl-2 to preserve mitochondrial function and suppress Apaf-1 and caspase-3 activation, thereby increasing neuron survival in rats after KA treatment. Therefore, xanthohumol has great potential for development into a therapeutic agent for improving glutamate-related nervous system diseases.


Assuntos
Flavonoides/farmacologia , Ácido Glutâmico/metabolismo , Hipocampo/metabolismo , Mitocôndrias/efeitos dos fármacos , Propiofenonas/farmacologia , Animais , Cálcio/metabolismo , Morte Celular/efeitos dos fármacos , Masculino , Mitocôndrias/metabolismo , Neurônios/metabolismo , Fármacos Neuroprotetores/farmacologia , Ratos Sprague-Dawley
9.
Mol Cell Proteomics ; 16(1): 113-120, 2017 01.
Artigo em Inglês | MEDLINE | ID: mdl-27864322

RESUMO

Proteolysis is a vital mechanism to regulate the cellular proteome in all kingdoms of life, and ATP-dependent proteases play a crucial role within this process. In Escherichia coli, ClpYQ is one of the primary ATP-dependent proteases. In addition to function with removals of abnormal peptides in the cells, ClpYQ degrades regulatory proteins if necessary and thus let cells adjust to various environmental conditions. In E. coli, SulA, RcsA, RpoH and TraJ as well as RNase R, have been identified as natural protein substrates of ClpYQ. ClpYQ contains ClpY and ClpQ. The ATPase ClpY is responsible for protein recognition, unfolding, and translocation into the catalytic core of ClpQ. In this study, we use an indirect identification strategy to screen possible ClpY targets with E. coli K12 proteome chips. The chip assay results showed that YbaB strongly bound to ClpY. We used yeast two-hybrid assay to confirm the interactions between ClpY and YbaB protein and determined the Kd between ClpY and YbaB by quartz crystal microbalance. Furthermore, we validated that YbaB was successfully degraded by ClpYQ protease activity using ClpYQ in vitro and in vivo degradation assay. These findings demonstrated the YbaB is a novel substrate of ClpYQ protease. This work also successfully demonstrated that with the use of recognition element of a protease can successfully screen its substrates by indirect proteome chip screening assay.


Assuntos
Proteínas de Ligação a DNA/metabolismo , Endopeptidase Clp/metabolismo , Proteínas de Escherichia coli/metabolismo , Análise Serial de Proteínas/métodos , Escherichia coli/metabolismo , Cinética , Ligação Proteica , Mapas de Interação de Proteínas , Proteoma/análise , Especificidade por Substrato
10.
Sci Rep ; 6: 37174, 2016 11 17.
Artigo em Inglês | MEDLINE | ID: mdl-27853187

RESUMO

A general solvent-dependent protocol directly influencing the oxygen reduction reaction (ORR) in metal oxide/graphene nanohybrids has been demonstrated. We conducted the two-step synthesis of cobalt oxide/N-doped graphene nanohybrids (CNG) with solvents of water, ethanol, and dimethylformamide (DMF), representing tree typical categories of aqueous, polar organic, and organic N-containing solvents commonly adopted for graphene nanocomposites preparation. The superior ORR performance of the DMF-hybrids can be attributed to the high nitrogen-doping, aggregation-free hybridization, and unique graphene porous structures. As DMF is the more effective N-source, the spectroscopic results support a catalytic nitrogenation potentially mediated by cobalt-DMF coordination complexes. The wide-distribution of porosity (covering micro-, meso-, to macro-pore) and micron-void assembly of graphene may further enhance the diffusion kinetics for ORR. As the results, CNG by DMF-synthesis exhibits the high ORR activities close to Pt/C (i.e. only 8 mV difference of half-wave potential with electron transfer number of 3.96) with the better durability in the alkaline condition. Additional graphene hybrids comprised of iron and manganese oxides also show the superior ORR activities by DMF-synthesis, confirming the general solvent-dependent protocol to achieve enhanced ORR activities.

11.
Mol Cell Proteomics ; 15(6): 1837-47, 2016 06.
Artigo em Inglês | MEDLINE | ID: mdl-26902206

RESUMO

Antimicrobial peptides (AMPs) act either through membrane lysis or by attacking intracellular targets. Intracellular targeting AMPs are a resource for antimicrobial agent development. Several AMPs have been identified as intracellular targeting peptides; however, the intracellular targets of many of these peptides remain unknown. In the present study, we used an Escherichia coli proteome microarray to systematically identify the protein targets of three intracellular targeting AMPs: bactenecin 7 (Bac7), a hybrid of pleurocidin and dermaseptin (P-Der), and proline-arginine-rich peptide (PR-39). In addition, we also included the data of lactoferricin B (LfcinB) from our previous study for a more comprehensive analysis. We analyzed the unique protein hits of each AMP in the Kyoto Encyclopedia of Genes and Genomes. The results indicated that Bac7 targets purine metabolism and histidine kinase, LfcinB attacks the transcription-related activities and several cellular carbohydrate biosynthetic processes, P-Der affects several catabolic processes of small molecules, and PR-39 preferentially recognizes proteins involved in RNA- and folate-metabolism-related cellular processes. Moreover, both Bac7 and LfcinB target purine metabolism, whereas LfcinB and PR-39 target lipopolysaccharide biosynthesis. This suggested that LfcinB and Bac7 as well as LfcinB and PR-39 have a synergistic effect on antimicrobial activity, which was validated through antimicrobial assays. Furthermore, common hits of all four AMPs indicated that all of them target arginine decarboxylase, which is a crucial enzyme for Escherichia coli survival in extremely acidic environments. Thus, these AMPs may display greater inhibition to bacterial growth in extremely acidic environments. We have also confirmed this finding in bacterial growth inhibition assays. In conclusion, this comprehensive identification and systematic analysis of intracellular targeting AMPs reveals crucial insights into the intracellular mechanisms of the action of AMPs.


Assuntos
Peptídeos Catiônicos Antimicrobianos/farmacologia , Proteínas de Escherichia coli/análise , Escherichia coli/efeitos dos fármacos , Proteômica/métodos , Anti-Infecciosos , Peptídeos Catiônicos Antimicrobianos/química , Carboxiliases/metabolismo , Escherichia coli/metabolismo , Proteínas de Escherichia coli/efeitos dos fármacos , Proteínas de Escherichia coli/metabolismo , Regulação Bacteriana da Expressão Gênica/efeitos dos fármacos , Lactoferrina/farmacologia , Redes e Vias Metabólicas/efeitos dos fármacos , Testes de Sensibilidade Microbiana , Peptídeos Cíclicos/farmacologia , Análise Serial de Proteínas/métodos
12.
Proteomics ; 16(8): 1225-37, 2016 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-26648572

RESUMO

Antimicrobial peptides have been considered well-deserving candidates to fight the battle against microorganisms due to their broad-spectrum antimicrobial activities. Several studies have suggested that membrane disruption is the basic mechanism of AMPs that leads to killing or inhibiting microorganisms. Also, AMPs have been reported to interact with macromolecules inside the microbial cells such as nucleic acids (DNA/RNA), protein synthesis, essential enzymes, membrane septum formation and cell wall synthesis. Proteins are associated with many intracellular mechanisms of cells, thus protein targets may be specifically involved in mechanisms of action of AMPs. AMPs like pyrrhocoricin, drosocin, apidecin and Bac 7 are documented to have protein targets, DnaK and GroEL. Moreover, the intracellular targeting AMPs are reported to influence more than one protein targets inside the cell, suggesting for the multiple modes of actions. This complex mechanism of intracellular targeting AMPs makes them more difficult for the development of resistance. Herein, we have summarized the current status of AMPs in terms of their mode of actions, entry to cytoplasm and inhibition of macromolecules. To reveal the mechanism of action, we have focused on AMPs with intracellular protein targets. We have also included the use of high-throughput proteome microarray to determine the unidentified AMP protein targets in this review.


Assuntos
Peptídeos Catiônicos Antimicrobianos/metabolismo , Proteínas de Escherichia coli/metabolismo , Escherichia coli/metabolismo , Espaço Intracelular/metabolismo , Proteoma/metabolismo , Proteômica/métodos , Sequência de Aminoácidos , Peptídeos Catiônicos Antimicrobianos/genética , Peptídeos Catiônicos Antimicrobianos/farmacologia , Escherichia coli/efeitos dos fármacos , Proteínas de Escherichia coli/genética , Testes de Sensibilidade Microbiana , Modelos Biológicos , Proteoma/genética
14.
Mol Cell Proteomics ; 14(3): 510-8, 2015 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-25540388

RESUMO

To profile plasma antibodies of patients with bipolar disorder (BD), an E. coli proteome microarray comprising ca. 4200 proteins was used to analyze antibody differences between BD patients and mentally healthy controls (HCs). The plasmas of HCs and patients aged 18-45 years with bipolar I disorder (DSM-IV) in acute mania (BD-A) along with remission (BD-R) were collected. The initial samples consisting of 19 BD-A, 20 BD-R, and 20 HCs were probed with the microarrays. After selecting protein hits that recognized the antibody differences between BD and HC, the proteins were purified to construct BD focus arrays for training diagnosis committees and validation. Additional six BD-A, six BD-R, six HCs, and nine schizophrenic disorder (SZ, as another psychiatric control) samples were individually probed with the BD focus arrays. The trained diagnosis committee in BD-A versus HC combined top six proteins, including rpoA, thrA, flhB, yfcI, ycdU, and ydjL. However, the optimized committees in BD-R versus HC and BD-A versus BD-R were of low accuracy (< 0.6). In the single blind test using another four BD-A, four HC, and four SZ samples, the committee of BD-A versus HC was able to classify BD-A versus HC and SZ with 75% sensitivity and 80% specificity that both HC and SZ were regarded as negative controls. The consensus motif of the six proteins, which form the committee of BD-A versus HC, is [KE]DIL[AG]L[LV]I[NL][IC][SVKH]G[LV][VN][LV] by Gapped Local Alignment of Motifs. We demonstrated that the E. coli proteome microarray is capable of screening BD plasma antibody differences and the selected proteins committee was successfully used for BD diagnosis with 79% accuracy.


Assuntos
Anticorpos/metabolismo , Transtorno Bipolar/diagnóstico , Escherichia coli/metabolismo , Análise Serial de Proteínas/métodos , Proteômica/métodos , Esquizofrenia/diagnóstico , Adolescente , Adulto , Transtorno Bipolar/sangue , Transtorno Bipolar/patologia , Sequência Consenso , Regulação da Expressão Gênica , Humanos , Pessoa de Meia-Idade , Esquizofrenia/sangue , Método Simples-Cego , Adulto Jovem
15.
Mol Cell Proteomics ; 13(6): 1485-94, 2014 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-24692643

RESUMO

Type 1 fimbriae are filamentous structures on Escherichia coli. These structures are important adherence factors. Because binding to the host cells is the first step of infection, type 1 fimbria is an important virulence factor of pathogenic E. coli. Expression of type 1 fimbria is regulated by a phase variation in which each individual bacterium can alternate between fimbriated (phase-ON) and nonfimbriated (phase-OFF) states. The phase variation is regulated by the flipping of the 314-bp fimS fragment, which contains the promoter driving the expression of the genes required for the synthesis of type 1 fimbria. Thus, the bacterial proteins able to interact with fimS are likely to be involved in regulating the expression of type 1 fimbria. To identify novel type 1 fimbria-regulating factors, we used an E. coli K12 proteome chip to screen for the bacterial factors able to interact with a 602-bp DNA fragment containing fimS and its adjacent regions. The Spr protein was identified by the proteome chip-based screening and further confirmed to be able to interact with fimS by electrophoretic mobility shift assay. Deletion of spr in the neonatal meningitis E. coli strain RS218 significantly increased the ratio of the bacterial colonies that contained the type 1 fimbria phase-ON cells on agar plates. In addition, Spr interfered with the interactions of fimS with the site-specific recombinases, FimB and FimE, which are responsible for mediating the flipping of fimS. These results suggest that Spr is involved in the regulation of type 1 fimbria expression through direct interaction with the invertible element fimS. These findings facilitate our understanding of the regulation of type 1 fimbria.


Assuntos
Proteínas de Bactérias/biossíntese , Fímbrias Bacterianas/genética , Proteoma/genética , Fatores de Virulência/biossíntese , DNA Nucleotidiltransferases/biossíntese , Escherichia coli K12/genética , Regulação Bacteriana da Expressão Gênica , Regiões Promotoras Genéticas , Proteoma/biossíntese , Recombinação Genética , Fatores de Virulência/genética
16.
J Immunol Res ; 2014: 721505, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-25759833

RESUMO

A personalized probiotic microfluidic chip system has been established and used to screen the probiotics which had the highest value of IFN-γ/IL-10 or IL-10/IFN-γ among six probiotics, including L. paracasei BRAP01, L. acidophilus AD300, B. longum BA100, E. faecium BR0085, L. rhamnosus AD500, and L. reuteri BR101. One hundred volunteers were included and their PBMCs were collected and stimulated by the six probiotics. People who belonged to the IFN-γ group took the probiotics that exerted the highest ratio of IFN-γ/IL-10 and vice versa in IL-10 group. A significant increase in NK cytotoxicity of 69 volunteers in the IFN-γ group was observed compared to the IL-10 group (n = 21) and control group (n = 10). The result also showed that L. paracasei BRAP01 and L. acidophilus AD300 were the two dominant inducers in IFN-γ group which yielded higher value of IFN-γ/IL-10 than the other 4 probiotics, while L. reuteri BR101 was the most effective agent on the ratio of IL-10/IFN-γ in the IL-10 group. Our finding highlighted the concept of personalized probiotics and also provided a good foundation to investigate the probiotics with NK activity.


Assuntos
Terapia Biológica , Células Matadoras Naturais/imunologia , Leucócitos Mononucleares/imunologia , Probióticos/administração & dosagem , Adulto , Protocolos Clínicos , Citotoxicidade Imunológica , Feminino , Seguimentos , Humanos , Interferon gama/metabolismo , Interleucina-10/metabolismo , Masculino , Microfluídica , Pessoa de Meia-Idade , Medicina de Precisão , Resultado do Tratamento , Adulto Jovem
17.
Opt Express ; 21(7): 8535-43, 2013 Apr 08.
Artigo em Inglês | MEDLINE | ID: mdl-23571942

RESUMO

A precisely controlled metallic nanomesh was fabricated by using nanosphere lithography to pattern the silver thin film to form hexagonal nanohole arrays with excellent uniformity, high conductivity and good transparency. An Alq(3) based OLED, with the silver nanomesh electrode of high ðll factor of 70.2% demonstrated a considerable luminous efðciency of 4.8 cd/A, which is 60.9% higher than the referenced device with ITO anode. The periodical nanohole array not only increased the transparency but also helped extracting surface plasmonic wave in organic layers. By attaching the microlens array to further extract the trapped light in substrate, the extraction efficiency enhancement of device with nanomesh anode was 73.8% higher than 50.2% of the referenced device with ITO anode. And the overall current efficiency of device with nanomesh anode was 87.7% higher than traditional ITO based device.


Assuntos
Eletrodos , Lentes , Iluminação/instrumentação , Metais/química , Nanotecnologia/instrumentação , Compostos Orgânicos/química , Semicondutores , Desenho de Equipamento , Análise de Falha de Equipamento , Miniaturização
18.
Sensors (Basel) ; 13(1): 865-74, 2013 Jan 11.
Artigo em Inglês | MEDLINE | ID: mdl-23344381

RESUMO

In this study, electron beam lithography, rather than the most popular method, chemical synthesis, is used to construct periodical TiO(2) nanowires for a gas sensor with both robust and rapid performance. The effects of temperature on the sensing response and reaction time are analyzed at various operation temperatures ranging from 200 to 350 °C. At the optimized temperature of 300 °C, the proposed sensor repeatedly obtained a rise/recovery time (ΔR: 0.9 R(0) to 0.1 R(0)) of 3.2/17.5 s and a corresponding sensor response (ΔR/R(0)) of 21.7% at an ethanol injection mass quantity of 0.2 µg.

19.
Opt Express ; 21(24): 29827-35, 2013 Dec 02.
Artigo em Inglês | MEDLINE | ID: mdl-24514532

RESUMO

We present a low-cost method to fabricate large-area polycarbonate AR nanostructures to improve the luminous intensity and image clarity of a commercial 2.0-inch display panel in bright condition. The polycarbonate AR nanostructures were nanoimprinted by the graded-density nanoporous silicon template with nanoparticle-catalyzed etching. The average reflectivity of the AR film in visible wavelength region was reduced from 10.2% to 4.8% in the optimized case. After attaching on the display panel to reduce the light reflection on the substrate, the brightness enhancement and decrease of ambient light reflection were observed. Due to the enhancement of contrast ratio, the quality index of the Lena image test was improved from 0.85 to 0.92 under strong ambient illumination.

20.
Mol Cell Proteomics ; 11(11): 1177-90, 2012 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-22843995

RESUMO

Fluorescent liposomal nanovesicles (liposomes) are commonly used for lipid research and/or signal enhancement. However, the problem of self-quenching with conventional fluorescent liposomes limits their applications because these liposomes must be lysed to detect the fluorescent signals. Here, we developed a nonquenched fluorescent (NQF)1 liposome by optimizing the proportion of sulforhodamine B (SRB) encapsulant and lissamine rhodamine B-dipalmitoyl phosphatidylethanol (LRB-DPPE) on a liposomal surface for signal amplification. Our study showed that 0.3% of LRB-DPPE with 200 µm of SRB provided the maximal fluorescent signal without the need to lyse the liposomes. We also observed that the NQF liposomes largely eliminated self-quenching effects and produced greatly enhanced signals than SRB-only liposomes by 5.3-fold. To show their application in proteomics research, we constructed NQF liposomes that contained phosphatidylinositol 3,5-bisphosphate (PI(3,5)P2) and profiled its protein interactome using a yeast proteome microarray. Our profiling led to the identification of 162 PI(3,5)P2-specific binding proteins (PI(3,5)P2-BPs). We not only recovered many proteins that possessed known PI(3,5)P2-binding domains, but we also found two unknown Pfam domains (Pfam-B_8509 and Pfam-B_10446) that were enriched in our dataset. The validation of many newly discovered PI(3,5)P2-BPs was performed using a bead-based affinity assay. Further bioinformatics analyses revealed that the functional roles of 22 PI(3,5)P2-BPs were similar to those associated with PI(3,5)P2, including vesicle-mediated transport, GTPase, cytoskeleton, and kinase. Among the 162 PI(3,5)P2-BPs, we found a novel motif, HRDIKP[ES]NJLL that showed statistical significance. A docking simulation showed that PI(3,5)P2 interacted primarily with lysine or arginine side chains of the newly identified PI(3,5)P2-binding kinases. Our study showed that this new tool would greatly benefit profiling lipid-protein interactions in high-throughput studies.


Assuntos
Metabolismo dos Lipídeos , Lipossomos/metabolismo , Nanopartículas/química , Análise Serial de Proteínas/métodos , Proteoma/metabolismo , Proteômica/métodos , Proteínas de Saccharomyces cerevisiae/metabolismo , Motivos de Aminoácidos , Sequência de Aminoácidos , Cromatografia de Afinidade , Biologia Computacional , Citoesqueleto/metabolismo , Fluorescência , GTP Fosfo-Hidrolases/metabolismo , Simulação de Acoplamento Molecular , Dados de Sequência Molecular , Fosfatos de Fosfatidilinositol/metabolismo , Ligação Proteica , Transporte Proteico , Reprodutibilidade dos Testes , Saccharomyces cerevisiae/metabolismo , Vesículas Transportadoras/metabolismo
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