Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 35
Filtrar
1.
Mol Biol Rep ; 50(5): 4395-4409, 2023 May.
Artigo em Inglês | MEDLINE | ID: mdl-36971909

RESUMO

BACKGROUND: Tobacco brown spot disease is an important disease caused by Alternaria alternata that affects tobacco production and quality worldwide. Planting resistant varieties is the most economical and effective way to control this disease. However, the lack of understanding of the mechanism of tobacco resistance to tobacco brown spot has hindered progress in the breeding of resistant varieties. METHODS AND RESULTS: In this study, differentially expressed proteins (DEPs), including 12 up-regulated and 11 down-regulated proteins, were screened using isobaric tags for relative and absolute quantification (iTRAQ) by comparing resistant and susceptible pools and analyzing the associated functions and metabolic pathways. Significantly up-regulated expression of the major latex-like protein gene 423 (MLP 423) was detected in both the resistant parent and the population pool. Bioinformatics analysis showed that the NbMLP423 cloned in Nicotiana benthamiana had a similar structure to the NtMLP423 in Nicotiana tabacum, and that expression of both genes respond rapidly to Alternaria alternata infection. NbMLP423 was then used to study the subcellular localization and expression in different tissues, followed by both silencing and the construction of an overexpression system for NbMLP423. The silenced plants demonstrated inhibited TBS resistance, while the overexpressed plants exhibited significantly enhanced resistance. Exogenous applications of plant hormones, such as salicylic acid, had a significant inducing effect on NbMLP423 expression. CONCLUSIONS: Taken together, our results provide insights into the role of NbMLP423 in plants against tobacco brown spot infection and provide a foundation for obtaining resistant tobacco varieties through the construction of new candidate genes of the MLP subfamily.


Assuntos
Nicotiana , Proteínas de Plantas , Nicotiana/genética , Nicotiana/metabolismo , Proteínas de Plantas/genética , Proteínas de Plantas/metabolismo , Proteômica , Melhoramento Vegetal , Doenças das Plantas/genética
2.
Opt Lett ; 47(13): 3343-3346, 2022 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-35776621

RESUMO

In this Letter, a record modulation bandwidth of 1.31 GHz was achieved by a 10 µm c-plane green micro light emitting diode (micro-LED) at a current density of 41.4 kA/cm2. Furthermore, by designing a series-biased 20 µm micro-LED with higher light output power, combined with an orthogonal frequency division multiplexing modulation scheme, a maximum data rate of 5.789 Gbps was achieved at a free-space transmission distance of 0.5 m. This work demonstrates the prospect of c-plane polar green micro-LED in ultrahigh-speed visible light communication, which is expected to realize a high-performance wireless system in the future.

3.
Surg Innov ; 29(3): 343-352, 2022 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-34559004

RESUMO

BACKGROUND: Three-dimensional computed tomography bronchography and angiography (3D-CTBA) provides detailed imaging information for pulmonary segmentectomy. This study was performed to verify the feasibility of 3D-CTBA-guided thoracoscopic segmentectomy for the treatment of pulmonary nodules. METHODS: A retrospective analysis was performed on all patients who underwent 3D-CTBA-guided uniport thoracoscopic segmentectomies or subsegmentectomies for pulmonary nodules in the period from May 2019 to May 2020. All of the information related to perioperative management and surgical operations was retrieved from the medical records and operating notes for detailed analysis. RESULTS: A total of 104 eligible operations involving the resection of 110 nodules with diameters in the range of 5-20 mm were included. Under 3D-CTBA guidance, the pulmonary nodules were located with an accuracy of 100% (110/110) and the median resection margin was 24.3 mm (17-33 mm). Additionally, the segmental (subsegmental) bronchi, arteries, and veins were identified with accuracy rates of 100% (104/104), 96.2% (100/104), and 94.2% (98/104), respectively. The postoperative complications consisted of 3 cases of pulmonary infection (2.9%), 6 cases of arrhythmia (5.8%), 2 cases of hemoptysis (1.9%), 4 cases of air leak (3.8%), and 2 cases of subcutaneous emphysema (1.9%). No perioperative death occurred. CONCLUSION: 3D-CTBA-guided thoracoscopic segmentectomy is an effective surgical approach for the management of pulmonary nodules.


Assuntos
Broncografia , Neoplasias Pulmonares , Angiografia/métodos , Humanos , Imageamento Tridimensional/métodos , Neoplasias Pulmonares/diagnóstico por imagem , Neoplasias Pulmonares/cirurgia , Mastectomia Segmentar , Pneumonectomia/métodos , Estudos Retrospectivos , Cirurgia Torácica Vídeoassistida/métodos , Tomografia Computadorizada por Raios X
4.
Adv Funct Mater ; 31(7): 2008452, 2021 Feb 10.
Artigo em Inglês | MEDLINE | ID: mdl-33349747

RESUMO

The world-wide spreading of coronavirus disease (COVID-19) has greatly shaken human society, thus effective and fast-speed methods of non-daily-life-disturbance sterilization have become extremely significant. In this work, by fully benefitting from high-quality AlN template (with threading dislocation density as low as ≈6×108 cm-2) as well as outstanding deep ultraviolet (UVC-less than 280 nm) light-emitting diodes (LEDs) structure design and epitaxy optimization, high power UVC LEDs and ultra-high-power sterilization irradiation source are achieved. Moreover, for the first time, a result in which a fast and complete elimination of SARS-CoV-2 (the virus causes COVID-19) within only 1 s is achieved by the nearly whole industry-chain-covered product. These results advance the promising potential in UVC-LED disinfection particularly in the shadow of COVID-19.

5.
Opt Lett ; 45(8): 2427-2430, 2020 Apr 15.
Artigo em Inglês | MEDLINE | ID: mdl-32287250

RESUMO

The ${{\rm MoO}_{\rm x}}/{\rm Al}$MoOx/Al electrode was designed and fabricated on p-GaN and sapphire with good ohmic behavior and decent deep ultraviolet (DUV) reflectivity, respectively. The influences of ${{\rm MoO}_{\rm x}}$MoOx thickness and annealing condition on the electrical and optical behaviors of the ${{\rm MoO}_{\rm x}}/{\rm Al}$MoOx/Al structure were investigated. Surface morphology of ${{\rm MoO}_{\rm x}}$MoOx with different thicknesses reveals a 3D growth mode. Partial decomposition of ${{\rm MoO}_{\rm x}}$MoOx was discovered, which helps in the formation of ohmic contact between ${{\rm MoO}_{\rm x}}$MoOx and Al. The potential for application in deep ultraviolet light-emitting-diodes (DUV-LEDs) has also been demonstrated.

6.
Sensors (Basel) ; 20(7)2020 Mar 25.
Artigo em Inglês | MEDLINE | ID: mdl-32218357

RESUMO

We explore a one-stage method for surface anomaly detection in industrial scenarios. On one side, encoder-decoder segmentation network is constructed to capture small targets as much as possible, and then dual background suppression mechanisms are designed to reduce noise patterns in coarse and fine manners. On the other hand, a classification module without learning parameters is built to reduce information loss in small targets due to the inexistence of successive down-sampling processes. Experimental results demonstrate that our one-stage detector achieves state-of-the-art performance in terms of precision, recall and f-score.

7.
Am J Hum Genet ; 98(2): 256-74, 2016 Feb 04.
Artigo em Inglês | MEDLINE | ID: mdl-26833333

RESUMO

Comprehensive identification of somatic structural variations (SVs) and understanding their mutational mechanisms in cancer might contribute to understanding biological differences and help to identify new therapeutic targets. Unfortunately, characterization of complex SVs across the whole genome and the mutational mechanisms underlying esophageal squamous cell carcinoma (ESCC) is largely unclear. To define a comprehensive catalog of somatic SVs, affected target genes, and their underlying mechanisms in ESCC, we re-analyzed whole-genome sequencing (WGS) data from 31 ESCCs using Meerkat algorithm to predict somatic SVs and Patchwork to determine copy-number changes. We found deletions and translocations with NHEJ and alt-EJ signature as the dominant SV types, and 16% of deletions were complex deletions. SVs frequently led to disruption of cancer-associated genes (e.g., CDKN2A and NOTCH1) with different mutational mechanisms. Moreover, chromothripsis, kataegis, and breakage-fusion-bridge (BFB) were identified as contributing to locally mis-arranged chromosomes that occurred in 55% of ESCCs. These genomic catastrophes led to amplification of oncogene through chromothripsis-derived double-minute chromosome formation (e.g., FGFR1 and LETM2) or BFB-affected chromosomes (e.g., CCND1, EGFR, ERBB2, MMPs, and MYC), with approximately 30% of ESCCs harboring BFB-derived CCND1 amplification. Furthermore, analyses of copy-number alterations reveal high frequency of whole-genome duplication (WGD) and recurrent focal amplification of CDCA7 that might act as a potential oncogene in ESCC. Our findings reveal molecular defects such as chromothripsis and BFB in malignant transformation of ESCCs and demonstrate diverse models of SVs-derived target genes in ESCCs. These genome-wide SV profiles and their underlying mechanisms provide preventive, diagnostic, and therapeutic implications for ESCCs.


Assuntos
Carcinoma de Células Escamosas/genética , Neoplasias Esofágicas/genética , Estudos de Associação Genética/métodos , Variação Genética , Linhagem Celular , Ciclina D1/genética , Variações do Número de Cópias de DNA , Receptores ErbB/genética , Carcinoma de Células Escamosas do Esôfago , Deleção de Genes , Rearranjo Gênico , Genes p16 , Genoma Humano , Genômica , Humanos , Hibridização in Situ Fluorescente , Receptor ErbB-2/genética , Receptor Tipo 1 de Fator de Crescimento de Fibroblastos/genética , Receptor Notch1/genética , Reprodutibilidade dos Testes , Análise de Sequência de RNA , Translocação Genética
8.
Opt Express ; 27(11): 16195-16205, 2019 May 27.
Artigo em Inglês | MEDLINE | ID: mdl-31163803

RESUMO

The optical properties of hexagonal GaN microdisk arrays grown on sapphire substrates by selective area growth (SAG) technique were investigated both experimentally and theoretically. Whispering-gallery-mode (WGM) lasing is observed from various directions of the GaN pyramids collected at room temperature, with the dominant lasing mode being Transverse-Electric (TE) polarized. A relaxation of compressive strain in the lateral overgrown region of the GaN microdisk is illustrated by photoluminescence (PL) mapping and Raman spectroscopy. A strong correlation between the crystalline quality and lasing behavior of the GaN microdisks was also demonstrated.

9.
Nanotechnology ; 29(45): 45LT01, 2018 Nov 09.
Artigo em Inglês | MEDLINE | ID: mdl-30160239

RESUMO

Enhanced photoluminescence and improved internal quantum efficiency were demonstrated for ultraviolet light emitting diodes (UV-LEDs) with Al nanohole arrays deposited on the top surface. The effects of the thickness and periodicity of the plasmonic structures on the optical properties of UV-LEDs were studied, and an optimized nanohole array parameter was illustrated. Classical electrodynamic simulations showed that the radiated power is mostly concentrated along the edge of the Al nanohole arrays. Even though no obvious dip was observed in the transmission spectra associated with localized surface plasmon resonance, significant improvements in radiatiative recombination and light extraction efficiency were demonstrated, indicating the influence of Al nanohole arrays on the light emission control of UV-LEDs. It is anticipated that the enhanced luminescence can be obtained for various emitting wavelengths by directly adjusting the periodicity and morphology of the Al nanohole arrays and this new technology can alleviate crystal quality requirements of III-nitride thin films in the development of high efficiency UV optoelectronic devices.

10.
Thorac Cancer ; 15(8): 622-629, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38316630

RESUMO

BACKGROUND: To evaluate the safety and efficacy of camrelizumab plus albumin paclitaxel and carboplatin in the neoadjuvant treatment of borderline resectable or unresectable locally advanced esophageal cancer. METHODS: A retrospective analysis was conducted on 27 patients with borderline resectable or unresectable locally advanced esophageal cancer who received neoadjuvant treatment with camrelizumab plus albumin paclitaxel and carboplatin at Shanxi Cancer Hospital from January 2020 to March 2022. Of these, 20 patients underwent thoracoscopic esophagectomy after neoadjuvant treatment. RESULTS: Overall, 88.9% (24/27) of patients completed neoadjuvant treatment. The objective response rate was 79.2% (19/24) according to the RECIST criteria. Of the 20 patients who underwent surgery, the R0 resection rate was 95%, and 35% (7/20) achieved pathological complete response (pCR). During neoadjuvant treatment, 30% (6/20) of patients experienced grade ≥3 treatment-related adverse events (TRAEs), and 20% (4/20) had grade ≥3 postoperative complications. There were no cases of reoperation or perioperative mortality. CONCLUSION: Camrelizumab plus albumin paclitaxel and carboplatin were found to be safe and effective in the neoadjuvant treatment of borderline resectable or unresectable locally advanced esophageal cancer. It was observed to improve the rate of curative resection without increasing perioperative complications.


Assuntos
Anticorpos Monoclonais Humanizados , Neoplasias Esofágicas , Carcinoma de Células Escamosas do Esôfago , Humanos , Carboplatina/uso terapêutico , Carcinoma de Células Escamosas do Esôfago/tratamento farmacológico , Carcinoma de Células Escamosas do Esôfago/cirurgia , Neoplasias Esofágicas/tratamento farmacológico , Neoplasias Esofágicas/cirurgia , Neoplasias Esofágicas/patologia , Paclitaxel/farmacologia , Paclitaxel/uso terapêutico , Estudos Retrospectivos , Quimioterapia de Indução , Terapia Neoadjuvante , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Albuminas/uso terapêutico
11.
Pest Manag Sci ; 80(4): 2170-2178, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38284497

RESUMO

BACKGROUND: Rhizoctonia solani Kühn is a pathogenic fungus causing tobacco target spot disease, and leads to great losses worldwide. At present, resistant varieties and effective control strategy on tobacco target spot disease are very limited. Host-induced gene silencing (HIGS) as well as the exogenous dsRNA can be used to suppress disease progression, and reveal the function of crucial genes involved in the growth and pathogenesis of the fungus. RESULTS: The silencing of endoPGs or RPMK1 in host plants by TRV-based HIGS resulted in a significant reduction in disease development in Nicotiana benthamiana. In vitro analysis validated that red fluorescence signals were consistently observed in the hyphae treated with Cy3-fluorescein-labeled dsRNA at 12, 24, 48 and 72 h postinoculation (hpi). Additionally, application of dsRNA-endoPGs, dsRNA-RPMK1 and dsRNA-PGMK (fusion of partial endoPGs and RPMK1 sequences) effectively inhibited the hyphal growth of R. solani YC-9 in vitro and suppressed disease progression in the leaves, and quantitative real-time PCR confirmed that the application of dsRNAs significantly reduced the expression levels of endoPGs and RPMK1. CONCLUSION: These results provide theoretical basis and new direction for RNAi approaches on the prevention and control of disease caused by R. solani. © 2024 Society of Chemical Industry.


Assuntos
Nicotiana , RNA de Cadeia Dupla , Nicotiana/genética , Interferência de RNA , RNA de Cadeia Dupla/genética , RNA de Cadeia Dupla/farmacologia , Rhizoctonia , Progressão da Doença
12.
Virology ; 594: 110061, 2024 06.
Artigo em Inglês | MEDLINE | ID: mdl-38518441

RESUMO

The occurrence of geminiviruses causes significant economic losses in many economically important crops. In this study, a novel geminivirus isolated from tobacco in Sichuan province of China, named tomato leaf curl Chuxiong virus (TLCCxV), was characterized by small RNA-based deep sequencing. The full-length of TLCCxV genome was determined to be 2744 nucleotides (nt) encoding six open reading frames. Phylogenetic and genome-wide pairwise identity analysis revealed that TLCCxV shared less than 91% identities with reported geminiviruses. A TLCCxV infectious clone was constructed and successfully infected Nicotiana benthamiana, N. tabacum, N. glutinosa, Solanum lycopersicum and Petunia hybrida plants. Furthermore, expression of the V2, C1 and C4 proteins through a potato virus X vector caused severe chlorosis or necrosis symptom in N. benthamiana. Taken together, we identified a new geminivirus in tobacco plants, and found that V2, C1 and C4 contribute to symptom development.


Assuntos
Begomovirus , Geminiviridae , Geminiviridae/genética , Nicotiana , Filogenia , Virulência , Doenças das Plantas , Begomovirus/genética , China
13.
Nat Med ; 2024 Jul 02.
Artigo em Inglês | MEDLINE | ID: mdl-38956195

RESUMO

Recent single-arm studies involving neoadjuvant camrelizumab, a PD-1 inhibitor, plus chemotherapy for resectable locally advanced esophageal squamous cell carcinoma (LA-ESCC) have shown promising results. This multicenter, randomized, open-label phase 3 trial aimed to further assess the efficacy and safety of neoadjuvant camrelizumab plus chemotherapy followed by adjuvant camrelizumab, compared to neoadjuvant chemotherapy alone. A total of 391 patients with resectable thoracic LA-ESCC (T1b-3N1-3M0 or T3N0M0) were stratified by clinical stage (I/II, III or IVA) and randomized in a 1:1:1 ratio to undergo two cycles of neoadjuvant therapy. Treatments included camrelizumab, albumin-bound paclitaxel and cisplatin (Cam+nab-TP group; n = 132); camrelizumab, paclitaxel and cisplatin (Cam+TP group; n = 130); and paclitaxel with cisplatin (TP group; n = 129), followed by surgical resection. Both the Cam+nab-TP and Cam+TP groups also received adjuvant camrelizumab. The dual primary endpoints were the rate of pathological complete response (pCR), as evaluated by a blind independent review committee, and event-free survival (EFS), as assessed by investigators. This study reports the final analysis of pCR rates. In the intention-to-treat population, the Cam+nab-TP and Cam+TP groups exhibited significantly higher pCR rates of 28.0% and 15.4%, respectively, compared to 4.7% in the TP group (Cam+nab-TP versus TP: difference 23.5%, 95% confidence interval (CI) 15.1-32.0, P < 0.0001; Cam+TP versus TP: difference 10.9%, 95% CI 3.7-18.1, P = 0.0034). The study met its primary endpoint of pCR; however, EFS is not yet mature. The incidence of grade ≥3 treatment-related adverse events during neoadjuvant treatment was 34.1% for the Cam+nab-TP group, 29.2% for the Cam+TP group and 28.8% for the TP group; the postoperative complication rates were 34.2%, 38.8% and 32.0%, respectively. Neoadjuvant camrelizumab plus chemotherapy demonstrated superior pCR rates compared to chemotherapy alone for LA-ESCC, with a tolerable safety profile. Chinese Clinical Trial Registry identifier: ChiCTR2000040034 .

14.
Front Oncol ; 13: 1108758, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36969028

RESUMO

Background: Ground glass nodules (GGN) of the lung may be a precursor of lung cancer and have received increasing attention in recent years with the popularity of low-dose high-resolution computed tomography (CT). Many studies have discussed imaging features that suggest the benignity or malignancy of GGN, but the extent of its postoperative pathological infiltration is poorly understood. In this study, we identified CT imaging features that indicate the extent of GGN pathological infiltration. Methods: A retrospective analysis of 189 patients with pulmonary GGN from January 2020 to December 2021 at Shanxi Cancer Hospital was performed. Patients were classified according to their pathological type into non-invasive adenocarcinoma [atypical adenomatous hyperplasia (AAH) and adenocarcinoma in situ (AIS) in a total of 34 cases], micro-invasive adenocarcinoma (MIA) in 80 cases, and invasive adenocarcinoma (IAC) in a total of 75 cases. The general demographic data, nodule size, nodule area, solid component, CT indications and pathological findings of the three groups of patients were analyzed to predict the correlation between GGN and the degree of lung adenocarcinoma infiltration. Results: No statistically significant differences were found among the three groups in general information, vascular signs, and vacuolar signs (P > 0.05). Statistically significant differences among the three groups were found in nodule size, nodule area, lobar signs, pleural traction, burr signs, bronchial signs, and solid components (P < 0.05). Logistic regression equation tests based on the statistically significant indicators showed that nodal area, lobar sign, pleural pull, burr sign, bronchial sign, and solid component were independent predictors of lung adenocarcinoma infiltration. The subject operating characteristic (ROC) curve analysis showed that nodal area is valuable in predicting GGN infiltration. Conclusion: CT-based imaging indications are useful predictors of infiltrative adenocarcinoma manifested as pulmonary ground glass nodules.

15.
Front Plant Sci ; 14: 1264567, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-38046597

RESUMO

Rhizoctonia solani as a cosmopolitan fungus is the causative agent of many crop diseases and leads to significant economic losses in crop production. To explore the toxin structure and physiological activity of R. solani AG-3 TB, high-performance liquid chromatography (HPLC), infrared absorption spectrum (IR), and nuclear magnetic resonance spectrum (NMR) were required. Here, the compound (methoxymethyl)triphenylphosphonium chloride (MMC) with the molecular formula C20H20ClOP was purified and identified from R. solani AG-3 TB. The pure compound MMC treated at 20 µg/mL, 50 µg/mL, and 100 µg/mL can cause obvious necrosis on leaves, increase active oxygen species (AOS), decrease chlorophyll content, and damage cellular structure. The results enrich the understanding of toxin compounds for R. solani and provide valuable insights into the toxicology of R. solani AG-3 TB.

16.
Cancer Cell ; 41(1): 181-195.e9, 2023 01 09.
Artigo em Inglês | MEDLINE | ID: mdl-36584672

RESUMO

Integrated molecular analysis of human cancer has yielded molecular classification for precise management of cancer patients. Here, we analyzed the whole genomic, epigenomic, transcriptomic, and proteomic data of 155 esophageal squamous cell carcinomas (ESCCs). Multi-omics analysis led to the classification of ESCCs into four subtypes: cell cycle pathway activation, NRF2 oncogenic activation, immune suppression (IS), and immune modulation (IM). IS and IM cases were highly immune infiltrated but differed in the type and distribution of immune cells. IM cases showed better response to immune checkpoint blockade therapy than other subtypes in a clinical trial. We further developed a classifier with 28 features to identify the IM subtype, which predicted anti-PD-1 therapy response with 85.7% sensitivity and 90% specificity. These results emphasize the clinical value of unbiased molecular classification based on multi-omics data and have the potential to further improve the understanding and treatment of ESCC.


Assuntos
Carcinoma de Células Escamosas , Neoplasias Esofágicas , Carcinoma de Células Escamosas do Esôfago , Humanos , Carcinoma de Células Escamosas do Esôfago/genética , Carcinoma de Células Escamosas do Esôfago/patologia , Neoplasias Esofágicas/genética , Neoplasias Esofágicas/patologia , Carcinoma de Células Escamosas/genética , Multiômica , Proteômica
17.
Thorac Cancer ; 13(1): 137-140, 2022 01.
Artigo em Inglês | MEDLINE | ID: mdl-34866350

RESUMO

Primary pulmonary EWS/PNET is extremely rare. This report describes a 20 year-old man with primary pulmonary EWS/PNET with TP53 germline and SKT11 somatic mutation. After four neoadjuvant chemotherapy cycles (VAC with alternating IE) combined with anlotinib, a left pneumonectomy was performed. Maintenance anlotinib monotherapy was then continued with no sign of recurrence to date. It is suggested that before the treatment and prognosis of children or young adults with primary EWS/PNET of the lung that consideration should be given to genetic testing.


Assuntos
Tumores Neuroectodérmicos Primitivos/genética , Tumores Neuroectodérmicos Primitivos/terapia , Pneumonectomia/métodos , Proteínas/genética , Sarcoma de Ewing/genética , Sarcoma de Ewing/terapia , Proteína Supressora de Tumor p53/genética , Terapia Combinada , Mutação em Linhagem Germinativa , Humanos , Metástase Linfática/genética , Metástase Linfática/terapia , Masculino , Proteína EWS de Ligação a RNA/genética , Sequenciamento do Exoma , Adulto Jovem
18.
Front Microbiol ; 13: 1025881, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36439836

RESUMO

Cigar is made of a typical fermented tobacco where the microbiota inhabits within an alkaline environment. Our current understanding on cigar fermentation is far from thorough. This work employed both high-throughput sequencing and chromatography-mass spectrometric technologies to provide new scientific reference for this specific fermented system. Typical cigar samples from different regions (the Caribbeans, South America, East Asia, and Southeast Asia) were investigated. The results show that Firmicutes, Actinobacteria, Proteobacteria, Ascomycota, and Basidiomycota were the predominant phyla in the cigar samples. Rather than the fungal community, it was the bacterial community structures that played vital roles to differentiate the cigar from different regions: Staphylococcus was the dominant genus in the Americas; Bacillus was the dominant genus in Southeast Asia; while in East Asia, there was no dominant genus. Such differences in community structure then affected the microflora metabolism. The correlation between microbiota and metabolites revealed that Aspergillaceae, Cercospora, and Staphylococcus were significantly correlated with sclareolide; Bacillus were positively associated with isophorone. Alcaligenaceae was significantly and positively correlated with L-nicotine and hexadecanoic acid, methyl ester. GRAPHICAL ABSTRACT.

19.
Mol Med Rep ; 23(3)2021 03.
Artigo em Inglês | MEDLINE | ID: mdl-33495838

RESUMO

Lung cancer is one of the most common types of cancer and has a high mortality rate, worldwide. The major histopathological subtype is non­small cell lung cancer (NSCLC). The aim of the present study was to investigate the role of long non­coding (lnc) RNA PITPNA antisense RNA 1 (PITPNA­AS1) in NSCLC and elucidate its potential mechanisms. The expression of PITPNA­AS1 was determined in several NSCLC cell lines. Following PITPNA­AS1­silencing, cell proliferation, invasion and migration were evaluated using Cell Counting Kit­8, colony formation, Transwell assay and wound healing assays, respectively. The expression levels of proliferation­, migration­ and epithelial­mesenchymal transition (EMT)­associated proteins were examined using immunofluorescence assay or western blot analysis. A luciferase reporter assay was conducted to verify the potential interaction between PITPNA­AS1 and microRNA(miR)­32­5p. Subsequently, rescue assays were performed to investigate the effects of PITPNA­AS1 and miR­32­5p on NSCLC progression. The results demonstrated that PITPNA­AS1 was highly expressed in NSCLC tissues and cell lines. It was found that PITPNA­AS1 silencing inhibited the proliferation, invasion and migration of NSCLC cells. Furthermore, the protein expression of E­cadherin was upregulated, while the expression levels N­cadherin and vimentin were downregulated. The luciferase reporter assay confirmed that miR­32­5p was a direct target of PITPNA­AS1. The rescue experiments suggested that a miR­32­5p inhibitor significantly reversed the inhibitory effects of PITPNA­AS1 silencing on proliferation, invasion, migration and EMT in NSCLC cells. Collectively, the present results demonstrated that PITPNA­AS1 silencing could suppress the progression of NSCLC by targeting miR­32­5p, suggesting a promising biomarker in NSCLC diagnosis and treatment.


Assuntos
Carcinoma Pulmonar de Células não Pequenas/metabolismo , Proliferação de Células , Transição Epitelial-Mesenquimal , Inativação Gênica , Neoplasias Pulmonares/metabolismo , MicroRNAs/metabolismo , RNA Longo não Codificante/metabolismo , Células A549 , Carcinoma Pulmonar de Células não Pequenas/genética , Carcinoma Pulmonar de Células não Pequenas/patologia , Humanos , Neoplasias Pulmonares/genética , MicroRNAs/genética , Metástase Neoplásica , RNA Longo não Codificante/genética , RNA Neoplásico/genética
20.
Gen Thorac Cardiovasc Surg ; 69(2): 318-325, 2021 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-32897502

RESUMO

OBJECTIVES: Single-port thoracoscopic lobectomy is a new therapeutic technique for patients with lung cancer; however, insufficient data are available regarding its clinical outcomes. We therefore compared the clinical outcomes of single-port and two-port thoracoscopic lobectomies for lung cancer. METHODS: We retrospectively analyzed and compared the data of 204 and 368 patients with lung cancer who underwent single-port or two-port thoracoscopic lobectomy, respectively, between October 2014 and October 2017 at our institution. Patients in both groups underwent 1:1 propensity score matching, and 400 patients (200 patients in each group) were included. Perioperative clinical indicators were analyzed, including operation time, lymph node dissection stations and numbers, incidence of postoperative complications, and pain scores at 24 h, 72 h, and 1 week after surgery. RESULTS: No perioperative deaths occurred in either group. The operation time, intraoperative blood loss, chest drainage duration, duration of postoperative hospital stay, lymph node dissection station and number, rate of conversion to open surgery, number of ruptured intraoperative pulmonary vessel, and incidence of postoperative complications were not significantly different between the groups (all P > 0.05). However, analysis of the 24-h (P = 0.005), 72-h (P = 0.011), and 1-week (P = 0.034) visual analog scale score after surgery revealed that the postoperative pain levels were significantly lower in the single-port than in the two-port group. CONCLUSIONS: Single-port and two-port thoracoscopic lobectomies had similar perioperative outcomes, although the postoperative pain was lower after single-port than two-port thoracoscopic lobectomy. Hence, we concluded that single-port thoracoscopic lobectomy is an effective, minimally invasive, and promising surgical procedure.


Assuntos
Neoplasias Pulmonares , Pneumonectomia , Humanos , Neoplasias Pulmonares/cirurgia , Dor Pós-Operatória/etiologia , Pneumonectomia/efeitos adversos , Estudos Retrospectivos , Cirurgia Torácica Vídeoassistida/efeitos adversos
SELEÇÃO DE REFERÊNCIAS
Detalhe da pesquisa