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1.
Small ; 19(47): e2303787, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-37438654

RESUMO

Using three-dimensional current collectors (3DCC) as frameworks for lithium metal anodes (LMAs) is a promising approach to inhibit dendrite growth. However, the intrinsically accumulated current density on the top surface and limited Li-ion transfer in the interior of 3DCC still lead to the formation of lithium dendrites, which can pose safety risks. In this study, it reports that gradient lithiophilic structures can induce uniform lithium deposition within the interior of the 3DCC, greatly suppressing dendrite formation, as confirmed by COMSOL simulations and experimental results. With this concept, a gradient-structured zinc oxide-loaded copper foam (GSZO-CF) is synthesized via an easy solution-combustion method at low cost. The resulting Li@GSZO-CF symmetric cells demonstrate stable cycling performance for over 800 cycles, with an ultra-deep capacity of 10 mAh cm-2 even under an ultra-high current density of 50 mA cm-2 , the top results reported in the literature. Moreover, when combined with a LiFePO4 (LFP) cathode under a low negative/positive (N/P) capacity ratio of 2.9, the Li@GSZO-CF||LFP full cells exhibit stable performance for 200 cycles, with a discharge capacity of 130 mAh g-1 and retention of 85.5% at a charging/discharging rate of 1C. These findings suggest a promising strategy for the development of new-generation LMAs.

2.
BMC Musculoskelet Disord ; 24(1): 418, 2023 May 25.
Artigo em Inglês | MEDLINE | ID: mdl-37231454

RESUMO

PURPOSE: The purpose of this study was to explore the feasibility and evaluate the clinical outcomes of treatment for phalangeal and metacarpal segmental defects with the induced membrane technique and autologous structural bone grafting. METHODS: Sixteen patients who sustained phalangeal or metacarpal bone segmental defects were treated by the induced membrane technique and autologous structural bone grafting from June 2020 to June 2021 at our center. RESULTS: The average follow-up was 24 weeks (range, 12-40 weeks). Radiography demonstrated union of all bone grafts after an average of 8.6 weeks (range, 8-12 weeks). All incisions at donor and recipient sites demonstrated primary heal without infection complications. The mean visual analog scale score of the donor site was 1.8 (range, 0-5), with a good score in 13 cases and a fair score in 3. The mean total active motion of the fingers was 179.9°. CONCLUSIONS: The feasibility of the induced membrane technique and structural treatment with a cylindrical bone graft for segmental bone defects of the metacarpal or phalanx is demonstrated by follow-up radiography results. The bone graft provided much more stability and structural support in the bone defects, and the bone healing time and bone union rate were ideal.


Assuntos
Ossos Metacarpais , Humanos , Ossos Metacarpais/diagnóstico por imagem , Ossos Metacarpais/cirurgia , Resultado do Tratamento , Transplante Ósseo/métodos , Estudos de Viabilidade , Radiografia , Estudos Retrospectivos
3.
J Clin Lab Anal ; 36(6): e24458, 2022 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-35476874

RESUMO

BACKGROUND: Esophageal squamous cell carcinoma (ESCC) is one of the most common clinical malignancies of the digestive system, characterized by high mortality but not evident early symptoms. Molecular markers for diagnostic and outcome prediction are urgently needed. Circular RNAs might play essential roles in the progression of ESCC. METHODS: Hsa_circ_0000977 was identified using circRNA microarrays and qRT-PCR. The diagnostic value of hsa_circ_0000977 was calculated. We also examined in vitro cell functions in ECA109 and TE12 ESCC cells to determine the effect of hsa_circ_0000977. A dual-luciferase reporter vector validated the binding of hsa_circ_0000977 to miR-874-3p. RESULTS: The top 10 significantly upregulated circRNAs from microarray assays were hsa_circ_0000977, hsa_circ_0006220, hsa_circ_0043278, hsa_circ_0000691, hsa_circ_0000288, hsa_circ_0000367, hsa_circ_0021647, hsa_circ_0006440, hsa_circRNA_405571 and hsa_circRNA_100790, while the top 10 significantly downregulated circRNAs were hsa_circ_0008389, hsa_circ_0089763, hsa_circ_0089762, hsa_circ_0000102, hsa_circ_0001714, hsa_circ_0089761, hsa_circ_0007326, hsa_circ_0001549, hsa_circ_0005133 and hsa_circRNA_405965. Hsa_circ_0000977 was significantly upregulated in ESCC (p < 0.01) and had diagnostic value in ESCC. The hsa_circ_0000977 expression level was related to the pT stage and numbers of lymph nodes in ESCC patients. Elevated hsa_circ_0000977 promoted cell proliferation, migration and inhibited apoptosis in ESCC cells. Hsa_circ_0000977 might function as a micro-RNA sponge to competitively bind miR-874-3p. CONCLUSION: Disordered hsa_circ_0000977 expression can promote carcinogenesis in ESCC and might serve as a diagnostic biomarker to evaluate the occurrence and development of esophageal cancer.


Assuntos
Neoplasias Esofágicas , Carcinoma de Células Escamosas do Esôfago , MicroRNAs , Movimento Celular/genética , Proliferação de Células/genética , Neoplasias Esofágicas/genética , Neoplasias Esofágicas/patologia , Carcinoma de Células Escamosas do Esôfago/genética , Carcinoma de Células Escamosas do Esôfago/patologia , Humanos , MicroRNAs/genética , MicroRNAs/metabolismo , RNA Circular/genética , Regulação para Cima/genética
4.
J Clin Lab Anal ; 36(2): e24197, 2022 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-34952991

RESUMO

BACKGROUND: Currently, the diagnosis and outcome of rheumatic valvular heart disease (RVHD) are less than ideal, and there are no accurate biomarkers. Circular RNA (circRNA) might participate in the occurrence and development of RVHD. MATERIALS AND METHODS: We use circRNA microarray to filter out the target has_circ_0000437. qRT-PCR was used to measure the expression levels of hsa_circ_0000437 in RVHD plasma samples. We assessed the diagnostic value of hsa_circ_0000437 in RVHD. Cell function in vitro experiment was to explore the effect of has_circ_0000437 on RVHD. RESULTS: Has_circ_0000437 is highly expressed in RVHD (p < 0.001). has_circ_0000437 has the diagnostic value in RVHD. In RVHD, hsa_circ_0000437 can promote cell proliferation and migration but inhibits its apoptosis. This may be due to the combination of has_circ_0000437 and target miRNA in the cytoplasm that affects the progress of RVHD. CONCLUSIONS: Has_circ_0000437 can promote the process of RVHD and may be a potential for the diagnosis and treatment of RVHD.


Assuntos
Progressão da Doença , Doenças das Valvas Cardíacas/fisiopatologia , RNA Circular/metabolismo , Cardiopatia Reumática/fisiopatologia , Células Cultivadas , Feminino , Humanos , Masculino , Regulação para Cima
5.
Genomics ; 113(1 Pt 2): 1233-1246, 2021 01.
Artigo em Inglês | MEDLINE | ID: mdl-33164830

RESUMO

Cardiovascular disease (CVD) is an important cause of disease-related death worldwide. One of its main pathological bases is imbalances in gene expression. Non-coding RNAs are a class of transcripts that do not encode proteins. They include microRNA (miRNA), long noncoding RNA (lncRNA) and circular RNA (circRNA). They have important biological functions such as regulating transcription and translation, as well as interacting with DNA, RNA, and proteins. They are also closely associated with pathological processes in CVD. This review will focus on the expression and function of miRNA, lncRNA, circRNA, as well as on their roles and molecular mechanisms in CVDs such as cardiac hypertrophy, heart failure, arrhythmia, myocardial infarction, atherosclerosis, rheumatic heart disease, myocardial fibrosis, pulmonary arterial hypertension. This review will outline concepts provide bases for early diagnosis and targeted treatment of CVDs.


Assuntos
Doenças Cardiovasculares/genética , RNA não Traduzido/genética , Animais , Biomarcadores/metabolismo , Doenças Cardiovasculares/metabolismo , Doenças Cardiovasculares/patologia , Humanos , RNA não Traduzido/metabolismo
6.
Int J Mol Sci ; 23(13)2022 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-35806345

RESUMO

This study aims to develop a simple, sensitive, low-cost, environmentally friendly and flexible surface-enhanced Raman scattering (SERS) platform, combined with a portable Raman spectrometer, for the rapid and on-site SERS detection of bacteria. Commercial tobacco packaging paper (TPP) with little background interference was used as a loading medium that effectively adsorbed Au nanoparticles and provided sufficient "hot spots". This Au-tobacco packaging paper (Au-TPP) substrate used as a flexible SERS platform can maximize sample collection by wiping irregular surfaces, and was successfully applied to the on-site and rapid detection of pathogenic bacteria. Raman fingerprints of pathogenic bacteria can be obtained by SERS detection of spiked pork using wipeable Au-TPP, which verifies its value in practical applications. The results collected by SERS were further verified by polymerase chain reaction (PCR) results. It showed several advantages in on-site SERS detection, including accurate discrimination, simple preparation, easy operation, good sensitivity, accuracy and reproducibility. This study indicates that the established flexible SERS platform has good practical applications in pathogenic bacterial identification and other rapid detections.


Assuntos
Ouro , Nanopartículas Metálicas , Bactérias , Reprodutibilidade dos Testes , Análise Espectral Raman/métodos
7.
Int J Mol Sci ; 23(3)2022 Jan 25.
Artigo em Inglês | MEDLINE | ID: mdl-35163280

RESUMO

The rapid identification of bacterial antibiotic susceptibility is pivotal to the rational administration of antibacterial drugs. In this study, cefotaxime (CTX)-derived resistance in Salmonella typhimurium (abbr. CTXr-S. typhimurium) during 3 months of exposure was rapidly recorded using a portable Raman spectrometer. The molecular changes that occurred in the drug-resistant strains were sensitively monitored in whole cells by label-free surface-enhanced Raman scattering (SERS). Various degrees of resistant strains could be accurately discriminated by applying multivariate statistical analyses to bacterial SERS profiles. Minimum inhibitory concentration (MIC) values showed a positive linear correlation with the relative Raman intensities of I990/I1348, and the R2 reached 0.9962. The SERS results were consistent with the data obtained by MIC assays, mutant prevention concentration (MPC) determinations, and Kirby-Bauer antibiotic susceptibility tests (K-B tests). This preliminary proof-of-concept study indicates the high potential of the SERS method to supplement the time-consuming conventional method and help alleviate the challenges of antibiotic resistance in clinical therapy.


Assuntos
Infecções por Salmonella/imunologia , Salmonella typhimurium/imunologia , Análise Espectral Raman/métodos , Antibacterianos/farmacologia , Bactérias/efeitos dos fármacos , Farmacorresistência Bacteriana/genética , Resistência Microbiana a Medicamentos/efeitos dos fármacos , Humanos , Infecções por Salmonella/diagnóstico , Salmonella typhimurium/efeitos dos fármacos , Salmonella typhimurium/patogenicidade
8.
Molecules ; 27(16)2022 Aug 18.
Artigo em Inglês | MEDLINE | ID: mdl-36014519

RESUMO

Aspergillus flavus and Aflatoxins in grain crops give rise to a serious threat to food security and cause huge economic losses. In particular, aflatoxin B1 has been identified as a Class I carcinogen to humans by the International Agency for Research on Cancer (IARC). Compared with conventional methods, Surface-Enhanced Raman Scattering (SERS) has paved the way for the detection of Aspergillus flavus and Aflatoxins in grain crops as it is a rapid, nondestructive, and sensitive analytical method. In this work, the rapid detection of Aspergillus flavus and quantification of Aflatoxin B1 in grain crops were performed by using a portable Raman spectrometer combined with colloidal Au nanoparticles (AuNPs). With the increase of the concentration of Aspergillus flavus spore suspension in the range of 102-108 CFU/mL, the better the combination of Aspergillus flavus spores and AuNPs, the better the enhancement effect of AuNPs solution on the Aspergillus flavus. A series of different concentrations of aflatoxin B1 methanol solution combined with AuNPs were determined based on SERS and their spectra were similar to that of solid powder. Moreover, the characteristic peak increased gradually with the increase of concentration in the range of 0.0005-0.01 mg/L and the determination limit was 0.0005 mg/L, which was verified by HPLC in ppM concentration. This rapid detection method can greatly shorten the detection time from several hours or even tens of hours to a few minutes, which can help to take effective measures to avoid causing large economic losses.


Assuntos
Aflatoxinas , Nanopartículas Metálicas , Aflatoxina B1 , Aflatoxinas/análise , Aspergillus flavus , Grão Comestível/química , Ouro/farmacologia , Humanos
9.
World J Microbiol Biotechnol ; 39(1): 26, 2022 Nov 24.
Artigo em Inglês | MEDLINE | ID: mdl-36422715

RESUMO

Grain crops are easily contaminated by fungi due to the existence of various microorganisms in the storage process, especially in humid and warm storage conditions. Compared with conventional methods, surface-enhanced Raman scattering (SERS) has paved the way for the detection of fungi in grain crops as it is a rapid, nondestructive, and sensitive analytical method. In this work, Aspergillus niger, Saccharomyces cerevisiae, Fusarium moniliforme and Trichoderma viride in grain crops were detected using colloidal Au nanoparticles and SERS. The results indicated that different fungi showed different Raman phenotypes, which could be easily characterized by SERS. Combined with multivariate statistical analysis, identification of a variety of fungi could be accomplished rapidly and accurately. This research can be applied for the rapid detection of fungi in the food and biomedical industries.


Assuntos
Nanopartículas Metálicas , Análise Espectral Raman , Análise Espectral Raman/métodos , Ouro , Análise Multivariada , Grão Comestível , Produtos Agrícolas , Fungos
10.
J Cell Biochem ; 122(2): 277-289, 2021 02.
Artigo em Inglês | MEDLINE | ID: mdl-33043480

RESUMO

Rapid detection and classification of cancer cells with label-free and non-destructive methods are helpful for rapid screening of cancer patients in clinical settings. Here, surface-enhanced Raman scattering (SERS) was used for rapid, unlabeled, and non-destructive detection of seven different cell types, including human cancer cells and non-tumorous cells. Au nanoparticles were used as enhanced substrates and directly added to cell surfaces. The single cellular SERS signals could be easily and stably collected in several minutes, and the cells maintained structural integrity over one hour. Different types of cells had unique Raman phenotypes. By applying multivariate statistical analysis to the Raman phenotypes, the cancer cells and non-tumorous cells were accurately identified. The high sensitivity enabled this method to discriminate subtle molecular changes in different cell types, and the accuracy reached 81.2% with principal components analysis and linear discriminant analysis. The technique provided a rapid, unlabeled, and non-destructive method for the detection and identification of various cancer types.


Assuntos
Ouro/química , Nanopartículas Metálicas/química , Análise Espectral Raman/métodos , Humanos , Análise Multivariada , Análise de Componente Principal
11.
Int J Mol Sci ; 20(20)2019 10 19.
Artigo em Inglês | MEDLINE | ID: mdl-31635133

RESUMO

Regenerative capacity varies greatly between species. Mammals are limited in their ability to regenerate damaged cells, tissues and organs compared to organisms with robust regenerative responses, such as zebrafish. The regeneration of zebrafish tissues including the heart, spinal cord and retina requires foxp3a+ zebrafish regulatory T cells (zTregs). However, it remains unclear whether the muted regenerative responses in mammals are due to impaired recruitment and/or function of homologous mammalian regulatory T cell (Treg) populations. Here, we explore the possibility of enhancing zTreg recruitment with pharmacological interventions using the well-characterized zebrafish tail amputation model to establish a high-throughput screening platform. Injury-infiltrating zTregs were transgenically labelled to enable rapid quantification in live animals. We screened the NIH Clinical Collection (727 small molecules) for modulators of zTreg recruitment to the regenerating tissue at three days post-injury. We discovered that the dopamine agonist pramipexole, a drug currently approved for treating Parkinson's Disease, specifically enhanced zTreg recruitment after injury. The dopamine antagonist SCH-23390 blocked pramipexole activity, suggesting that peripheral dopaminergic signaling may regulate zTreg recruitment. Similar pharmacological approaches for enhancing mammalian Treg recruitment may be an important step in developing novel strategies for tissue regeneration in humans.


Assuntos
Movimento Celular/efeitos dos fármacos , Movimento Celular/imunologia , Regeneração , Linfócitos T Reguladores/efeitos dos fármacos , Linfócitos T Reguladores/fisiologia , Peixe-Zebra/fisiologia , Animais , Dopamina/metabolismo , Pramipexol/farmacologia , Transdução de Sinais
12.
Molecules ; 24(16)2019 Aug 14.
Artigo em Inglês | MEDLINE | ID: mdl-31416240

RESUMO

Exosomes contain different functional bimolecular characteristics related to physiological or pathological processes and are now recognized as new biomarkers in different human cancers. Rapid detection and classification of cancer-related exosomes might be helpful in the rapid screening of patients that may have cancer. Here, we report a surface enhanced Raman scattering technology for rapid and label-free exosomal detection (Exo-SERS) to aid in the discrimination of different cancer cells based on specific Raman phenotypes and multivariate statistical analysis. The results demonstrated that exosomes derived from both tumor cells and normal cells exhibit special, unique Raman phenotypes. Using the Exo-SERS method, the cancer cells were accurately discriminated from normal cells, and subtle molecular changes between the different cell types could be detected with high sensitive. This research provides a rapid, label-free and non-destructive manner for detecting and discriminating between cancer types.


Assuntos
Biomarcadores Tumorais , Exossomos/química , Neoplasias/diagnóstico , Análise Espectral Raman , Linhagem Celular Tumoral , Exossomos/classificação , Exossomos/ultraestrutura , Ouro/química , Humanos , Nanopartículas Metálicas/química , Nanopartículas Metálicas/ultraestrutura , Análise Multivariada , Fenótipo , Análise Espectral Raman/métodos
13.
J Nanosci Nanotechnol ; 18(10): 6776-6785, 2018 10 01.
Artigo em Inglês | MEDLINE | ID: mdl-29954493

RESUMO

Rapid detection of food-borne pathogens is the most critical and urgent issue among all the current food safety problems. As enhanced substrate, nanoparticles are widely used in surface enhanced Raman scattering (SERS) because of unique optical and physicochemical properties. In this study, Au nanoparticles with monodisperse and good reproducibility were synthesized by using sodium citrate reduction method. Applying Au nanoparticles sol as enhanced substrate, a portable Raman spectrometer had been applied for rapid detection of single and mixture pathogenic bacterial contamination by SERS. The results indicated that Escherichia coli, Salmonella typhimirium, Shigella flexner and Staphylococcus aureus showed specific Raman phenotypes at 600∼1700 cm-1. Generally, different bacteria could be easily and instantly recognized by its Raman phenotypes. The PC-LDA classification model was set up by combined bacterial Raman phenotypes with the multivariate statistical analysis. With the short-time inoculation, four enteropathogenic bacteria could be rapidly, precisely, sensitively and specifically identified. Furthermore, the model also had a good ability to predict the mixed contamination. This research provides the possibility of rapid detection in the food and biomedical fields.


Assuntos
Enterobacteriaceae/isolamento & purificação , Análise Espectral Raman/métodos , Técnicas de Tipagem Bacteriana/economia , Técnicas de Tipagem Bacteriana/métodos , Infecções por Enterobacteriaceae/microbiologia , Escherichia coli/isolamento & purificação , Ouro/química , Humanos , Nanopartículas Metálicas/química , Salmonella/isolamento & purificação , Shigella/isolamento & purificação , Staphylococcus aureus/isolamento & purificação , Fatores de Tempo
14.
BMC Pulm Med ; 18(1): 121, 2018 Jul 20.
Artigo em Inglês | MEDLINE | ID: mdl-30029601

RESUMO

BACKGROUND: Crizotinib is a multi-target inhibitor approved for the treatment of advanced non-small-cell lung cancer patients with a ROS1 rearrangement. However, interstitial lung disease is a rare but severe and fatal side effect of crizotinib that should lead to immediate discontinuation of the drug. Unfortunately, the pathophysiology, molecular mechanism and risk factors for crizotinib-induced interstitial lung disease remain poorly understood. CASE PRESENTATION: We first identified and reported interstitial lung disease induced de novo by crizotinib in a 47-year-old female patient who was diagnosed with advanced lung adenocarcinoma with a ROS1 rearrangement in a malignant pleural effusion. Subsequent next-generation sequencing analysis revealed both ROS1 rearrangement and an EGFR exon 19 deletion mutation in lung biopsy specimens, which were histologically confirmed to be interstitial lung disease. Although crizotinib treatment was ceased immediately and a shock treatment with high-dose methylprednisolone as well as other necessary treatment procedures was applied to reverse the interstitial lung disease process, the patient died. CONCLUSIONS: The present case indicates that while treating non-small-cell lung cancer patients with crizotinib, it is important to constantly monitor any newly emerging respiratory symptoms and unexplained imaging changes, which may suggest an adverse effect related to drug-induced interstitial lung disease or even lethality. Histopathology and molecular pathological examination of lung biopsy specimens may help clinicians understand the development mechanism and exclude other causes.


Assuntos
Carcinoma Pulmonar de Células não Pequenas/tratamento farmacológico , Crizotinibe/efeitos adversos , Doenças Pulmonares Intersticiais/induzido quimicamente , Doenças Pulmonares Intersticiais/diagnóstico , Neoplasias Pulmonares/tratamento farmacológico , Antineoplásicos/efeitos adversos , Carcinoma Pulmonar de Células não Pequenas/genética , Receptores ErbB/genética , Evolução Fatal , Feminino , Humanos , Pulmão/diagnóstico por imagem , Pulmão/patologia , Neoplasias Pulmonares/genética , Pessoa de Meia-Idade , Mutação , Proteínas Tirosina Quinases/genética , Proteínas Proto-Oncogênicas/genética , Tomografia Computadorizada por Raios X
15.
BMC Pulm Med ; 14: 174, 2014 Nov 07.
Artigo em Inglês | MEDLINE | ID: mdl-25380840

RESUMO

BACKGROUND: Epithelial-mesenchymal transition (EMT) has been believed to be related with chemotherapy resistance in non-small cell lung cancer (NSCLC). Recent studies have suggested eIF5A-2 may function as a proliferation-related oncogene in tumorigenic processes. METHODS: We used cell viability assays, western blotting, immunofluorescence, transwell-matrigel invasion assay, wound-healing assay combined with GC7 (a novel eIF5A-2 inhibitor) treatment or siRNA interference to investigate the role of eIF5A-2 playing in NSCLC chemotherapy. RESULTS: We found low concentrations of GC7 have little effect on NSCLC viability, but could enhance cisplatin cytotoxicity in NSCLC cells. GC7 also could reverse mesenchymal phenotype in NCI-H1299 and prevented A549 cells undergoing EMT after TGF-ß1 inducement. eIF5A-2 knockdown resulted in EMT inhibition. CONCLUSION: Our data indicated GC7 enhances cisplatin cytotoxicity and prevents the EMT in NSCLC cells by inhibiting eIF5A-2.


Assuntos
Antineoplásicos/farmacologia , Carcinoma Pulmonar de Células não Pequenas/tratamento farmacológico , Cisplatino/farmacologia , Inibidores Enzimáticos/farmacologia , Guanina/análogos & derivados , Neoplasias Pulmonares/tratamento farmacológico , Fatores de Iniciação de Peptídeos/antagonistas & inibidores , Proteínas de Ligação a RNA/antagonistas & inibidores , Caderinas/metabolismo , Linhagem Celular Tumoral , Movimento Celular , Sobrevivência Celular/efeitos dos fármacos , Resistencia a Medicamentos Antineoplásicos/efeitos dos fármacos , Sinergismo Farmacológico , Transição Epitelial-Mesenquimal/efeitos dos fármacos , Inativação Gênica , Guanina/farmacologia , Humanos , Concentração Inibidora 50 , Oxirredutases atuantes sobre Doadores de Grupo CH-NH/antagonistas & inibidores , Fatores de Iniciação de Peptídeos/genética , RNA Interferente Pequeno , Proteínas de Ligação a RNA/genética , Vimentina/metabolismo , Fator de Iniciação de Tradução Eucariótico 5A
16.
J Med Internet Res ; 16(1): e20, 2014 Jan 17.
Artigo em Inglês | MEDLINE | ID: mdl-24440770

RESUMO

BACKGROUND: Outbreaks of human infection with a new avian influenza A H7N9 virus occurred in China in the spring of 2013. Control and prevention of a new human infectious disease outbreak can be strongly affected by public reaction and social impact through the Internet and social media. OBJECTIVE: This study aimed to investigate the potential roles of Internet surveillance in control and prevention of the human H7N9 outbreaks. METHODS: Official data for the human H7N9 outbreaks were collected via the China National Health and Family Planning Committee website from March 31 to April 24, 2013. We obtained daily posted and forwarded number of blogs for the keyword "H7N9" from Sina microblog website and a daily Baidu Attention Index (BAI) from Baidu website, which reflected public attention to the outbreak. Rumors identified and confirmed by the authorities were collected from Baidu search engine. RESULTS: Both daily posted and forwarded number and BAI for keyword H7N9 increased quickly during the first 3 days of the outbreaks and remained at a high level for 5 days. The total daily posted and forwarded number for H7N9 on Sina microblog peaked at 850,000 on April 3, from zero blogs before March 31, increasing to 97,726 on April 1 and to 370,607 on April 2, and remaining above 500,000 from April 5-8 before declining to 208,524 on April 12. The total daily BAI showed a similar pattern of change to the total daily posted and forwarded number over time from March 31 to April 12. When the outbreak locations spread, especially into other areas of the same province/city and the capital, Beijing, daily posted and forwarded number and BAI increased again to a peak at 368,500 and 116,911, respectively. The median daily BAI during the studied 25 days was significantly higher among the 7 provinces/cities with reported human H7N9 cases than the 2 provinces without any cases (P<.001). So were the median daily posted and forwarded number and daily BAI in each province/city except Anhui province. We retrieved a total of 32 confirmed rumors spread across 19 provinces/cities in China. In all, 84% (27/32) of rumors were disseminated and transmitted by social media. CONCLUSIONS: The first 3 days of an epidemic is a critical period for the authorities to take appropriate action through Internet surveillance to prevent and control the epidemic, including preparation of personnel, technology, and other resources; information release; collection of public opinion and reaction; and clarification, prevention, and control of rumors. Internet surveillance can be used as an efficient and economical tool to prevent and control public health emergencies, such as H7N9 outbreaks.


Assuntos
Surtos de Doenças , Subtipo H7N9 do Vírus da Influenza A/isolamento & purificação , Influenza Aviária/epidemiologia , Influenza Humana/epidemiologia , Internet , Prática de Saúde Pública , Animais , Aves , China/epidemiologia , Humanos , Influenza Aviária/prevenção & controle , Influenza Aviária/virologia , Influenza Humana/prevenção & controle , Influenza Humana/virologia , Vigilância da População
17.
J Hand Surg Am ; 39(11): 2235-42, 2014 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-25267472

RESUMO

PURPOSE: To retrospectively evaluate the effectiveness and safety of using a distal ulnar artery perforator (DUAP)-based bilobed free flap (BFF) for the repair of complex digital defects in the hand. METHODS: We retrospectively studied 15 patients who sustained traumatic digital defects with complicating tendon and phalanx exposure and were hospitalized for repair using a DUAP-based BFF. Main outcome measures included patients' self-assessed physical appearance, total active motion, and 2-point discrimination. RESULTS: The flaps survived and the wounds healed with primary intention in all patients except one who experienced partial flap necrosis of the distal margin and required treatment with a second skin graft. Patients were observed for a mean of 13 months. The physical appearance and texture of the repaired fingers were assessed as good with minimal scarring. Total active motion and 2-point discrimination were 113° to 255° (contralateral, 255° to 275°) and 6 to 11 mm (contralateral, 5 to 8 mm), respectively. CONCLUSIONS: Use of the DUAP-based BFF is a feasible, effective, and safe treatment alternative for repairing complex digital defects with favorable aesthetic and sensorimotor outcomes. TYPE OF STUDY/LEVEL OF EVIDENCE: Therapeutic IV.


Assuntos
Traumatismos dos Dedos/cirurgia , Retalhos de Tecido Biológico/irrigação sanguínea , Procedimentos de Cirurgia Plástica/métodos , Artéria Ulnar , Adulto , Feminino , Traumatismos dos Dedos/patologia , Traumatismos dos Dedos/fisiopatologia , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Amplitude de Movimento Articular , Recuperação de Função Fisiológica , Estudos Retrospectivos , Resultado do Tratamento , Adulto Jovem
18.
Front Immunol ; 15: 1366260, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38655260

RESUMO

Resistance to targeted therapy and immunotherapy in non-small cell lung cancer (NSCLC) is a significant challenge in the treatment of this disease. The mechanisms of resistance are multifactorial and include molecular target alterations and activation of alternative pathways, tumor heterogeneity and tumor microenvironment change, immune evasion, and immunosuppression. Promising strategies for overcoming resistance include the development of combination therapies, understanding the resistance mechanisms to better use novel drug targets, the identification of biomarkers, the modulation of the tumor microenvironment and so on. Ongoing research into the mechanisms of resistance and the development of new therapeutic approaches hold great promise for improving outcomes for patients with NSCLC. Here, we summarize diverse mechanisms driving resistance to targeted therapy and immunotherapy in NSCLC and the latest potential and promising strategies to overcome the resistance to help patients who suffer from NSCLC.


Assuntos
Carcinoma Pulmonar de Células não Pequenas , Resistencia a Medicamentos Antineoplásicos , Imunoterapia , Neoplasias Pulmonares , Terapia de Alvo Molecular , Microambiente Tumoral , Humanos , Carcinoma Pulmonar de Células não Pequenas/terapia , Carcinoma Pulmonar de Células não Pequenas/imunologia , Neoplasias Pulmonares/terapia , Neoplasias Pulmonares/imunologia , Imunoterapia/métodos , Microambiente Tumoral/imunologia , Animais , Biomarcadores Tumorais
19.
PLoS Pathog ; 7(12): e1002460, 2011 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-22216007

RESUMO

As in other eukaryotes, protein kinases play major regulatory roles in filamentous fungi. Although the genomes of many plant pathogenic fungi have been sequenced, systematic characterization of their kinomes has not been reported. The wheat scab fungus Fusarium graminearum has 116 protein kinases (PK) genes. Although twenty of them appeared to be essential, we generated deletion mutants for the other 96 PK genes, including 12 orthologs of essential genes in yeast. All of the PK mutants were assayed for changes in 17 phenotypes, including growth, conidiation, pathogenesis, stress responses, and sexual reproduction. Overall, deletion of 64 PK genes resulted in at least one of the phenotypes examined, including three mutants blocked in conidiation and five mutants with increased tolerance to hyperosmotic stress. In total, 42 PK mutants were significantly reduced in virulence or non-pathogenic, including mutants deleted of key components of the cAMP signaling and three MAPK pathways. A number of these PK genes, including Fg03146 and Fg04770 that are unique to filamentous fungi, are dispensable for hyphal growth and likely encode novel fungal virulence factors. Ascospores play a critical role in the initiation of wheat scab. Twenty-six PK mutants were blocked in perithecia formation or aborted in ascosporogenesis. Additional 19 mutants were defective in ascospore release or morphology. Interestingly, F. graminearum contains two aurora kinase genes with distinct functions, which has not been reported in fungi. In addition, we used the interlog approach to predict the PK-PK and PK-protein interaction networks of F. graminearum. Several predicted interactions were verified with yeast two-hybrid or co-immunoprecipitation assays. To our knowledge, this is the first functional characterization of the kinome in plant pathogenic fungi. Protein kinase genes important for various aspects of growth, developmental, and infection processes in F. graminearum were identified in this study.


Assuntos
Proteínas Fúngicas/metabolismo , Fusarium/enzimologia , Proteínas Quinases/metabolismo , Proteoma/metabolismo , Proteínas Fúngicas/genética , Fusarium/genética , Fusarium/patogenicidade , Genes Fúngicos/fisiologia , Mutação , Doenças das Plantas/genética , Proteínas Quinases/genética , Proteoma/genética , Triticum/genética , Triticum/metabolismo , Triticum/microbiologia
20.
Am J Transl Res ; 15(6): 4100-4109, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37434819

RESUMO

OBJECTIVE: To investigate the relationship of lymphocyte-to-monocyte ratio (LMR), neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR) and nutritional risk index (NRI) with the prognosis of non-small cell lung cancer (NSCLC). METHODS: The clinical data of 400 NSCLC patients undergoing surgery at Shaoxing Shangyu Hospital of Traditional Chinese Medicine from January 2019 to June 2022 were collected for this retrospective analysis. The optimal cutoff values for NLR, PLR, LMR and NRI were determined using receiver operating characteristic (ROC) curves. The patients were grouped according to the optimal cutoff values, and the clinicopathological characteristics were compared between groups. The Kaplan-Meier survival curve and Cox risk model were used to identify the independent risk factors affecting the prognosis of patients with NSCLC. A nomogram risk prediction model was constructed and its effectiveness was verified. RESULTS: ROC curve analysis revealed that the area under the curve (AUC) values for NLR, PLR, LMR and NRI in predicting overall survival of NSCLC patients were 0.827, 0.753, 0.719 and 0.770, respectively. The optimal cutoff values for NLR, PLR, LMR and NRI were 2.49, 126.32, 3.02 and 89, respectively. Survival analysis found that the survival time was shorter in patients with NLR>2.49, PLR>126.32, LMR>3.02 and NRI≤89. Results from Cox model indicated that TNM staging, NLR>2.49, LMR>3.02, NRI≤89, surgical method, intraoperative blood loss, postoperative complication, and adjuvant chemotherapy were risk factors affecting the prognosis of NSCLC patients. A nomogram was constructed based on the results of multivariate analysis. The AUC of the nomogram was 0.967 (95% CI: 0.943-0.992) and 0.948 (95% CI: 0.874-1) in the training set and the test set, respectively. The C-index was 0.90 and 0.89, respectively. The calibration curve demonstrated good agreement between the predicted values of the nomogram and the actual observed values. CONCLUSION: NLR, LMR and NRI are significant predictors of the prognosis of patients with NSCLC. NLR>2.49, LMR>3.02, and NRI≤89 are risk factors for the prognosis of NSCLC patients.

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