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1.
J Nanobiotechnology ; 22(1): 313, 2024 Jun 05.
Artigo em Inglês | MEDLINE | ID: mdl-38840120

RESUMO

Adoptive cellular immunotherapy as a promising and alternative cancer therapy platform is critical for future clinical applications. Natural killer (NK) cells have attracted attention as an important type of innate immune regulatory cells that can rapidly kill multiple adjacent cancer cells. However, these cells are significantly less effective in treating solid tumors than in treating hematological tumors. Herein, we report the synthesis of a Fe3O4-PEG-CD56/Avastin@Ce6 nanoprobe labeled with NK-92 cells that can be used for adoptive cellular immunotherapy, photodynamic therapy and dual-modality imaging-based in vivo fate tracking. The labeled NK-92 cells specifically target the tumor cells, which increases the amount of cancer cell apoptosis in vitro. Furthermore, the in vivo results indicate that the labeled NK-92 cells can be used for tumor magnetic resonance imaging and fluorescence imaging, adoptive cellular immunotherapy, and photodynamic therapy after tail vein injection. These data show that the developed multifunctional nanostructure is a promising platform for efficient innate immunotherapy, photodynamic treatment and noninvasive therapeutic evaluation of breast cancer.


Assuntos
Neoplasias da Mama , Antígeno CD56 , Células Matadoras Naturais , Fotoquimioterapia , Polietilenoglicóis , Neoplasias da Mama/terapia , Humanos , Feminino , Animais , Fotoquimioterapia/métodos , Camundongos , Polietilenoglicóis/química , Linhagem Celular Tumoral , Antígeno CD56/metabolismo , Imunoterapia Adotiva/métodos , Apoptose/efeitos dos fármacos , Imageamento por Ressonância Magnética/métodos , Camundongos Endogâmicos BALB C , Camundongos Nus
2.
BMC Anesthesiol ; 24(1): 99, 2024 Mar 12.
Artigo em Inglês | MEDLINE | ID: mdl-38475699

RESUMO

BACKGROUND: The use of nonintubated video-assisted thoracoscopic surgery (NI-VATS) has been increasingly reported to yield favourable outcomes. However, this technology has not been routinely used because its advantages and safety have not been fully confirmed. The aim of this study was to assess the safety and feasibility of nonintubated spontaneous ventilation (NI-SV) anesthesia compared to intubated mechanical ventilation (I-MV) anesthesia in VATS by evaluating of perioperative complications and practitioners' workloads. METHODS: Patients who underwent uniportal VATS were randomly assigned at a 1:1 ratio to receive NI-SV or I-MV anesthesia. The primary outcome was the occurrence of intraoperative airway intervention events, including transient MV, conversion to intubation and repositioning of the double-lumen tube. The secondary outcomes included perioperative complications and modified National Aeronautics and Space Administration Task Load Index (NASA-TLX) scores from anesthesiologists and surgeons. RESULTS: Thirty-five patients in each group were enrolled in the intention-to-treat analysis. The incidence of intraoperative airway intervention events was greater in the NI-SV group than in the I-MV group (12 [34.3%] vs. 3 [8.6%]; OR = 0.180; 95% CI = 0.045-0.710; p = 0.009). No significant difference was found in the postoperative pulmonary complications between the groups (p > 0.05). The median of the anesthesiologists' overall NASA-TLX score was 37.5 (29-52) when administering the NI-SV, which was greater than the 25 (19-34.5) when the I-MV was administered (p < 0.001). The surgeons' overall NASA-TLX score was comparable between the two ventilation strategies (28 [21-38.5] vs. 27 [20.5-38.5], p = 0.814). CONCLUSION: The NI-SV anesthesia was feasible for VATS in the selected patients, with a greater incidence of intraoperative airway intervention events than I-MV anesthesia, and with more surgical effort required by anesthesiologists. TRIAL REGISTRATION: Chinese Clinical Trial Registry, ChiCTR2200055427. https://www.chictr.org.cn/showproj.html?proj=147872 was registered on January 09, 2022.


Assuntos
Anestesia , Cirurgia Torácica Vídeoassistida , Humanos , Respiração Artificial/efeitos adversos , Carga de Trabalho , Projetos Piloto , Anestesia/efeitos adversos , Complicações Pós-Operatórias/epidemiologia
3.
Environ Res ; 238(Pt 2): 117161, 2023 12 01.
Artigo em Inglês | MEDLINE | ID: mdl-37717800

RESUMO

BACKGROUND: A growing number of studies have shown that prenatal exposure to chemical and non-chemical stressors has effects on fetal growth. The co-exposure of both better reflects real-life exposure patterns. However, no studies have included air pollutants and pregnancy-related anxiety (PrA) as mixtures in the analysis. METHOD: Using the birth cohort study method, 576 mother-child pairs were included in the Ma'anshan Maternal and Child Health Hospital. Evaluate the exposure levels of six air pollutants during pregnancy using inverse distance weighting (IDW) based on the pregnant woman's residential address and air pollution data from monitoring stations. Prenatal anxiety levels were assessed using the PrA Questionnaire. Generalized linear regression (GLR), quantile g-computation (QgC) and bayesian kernel machine regression (BKMR) were used to assess the independent or combined effects of air pollutants and PrA on birth weight for gestational age z-score (BWz). RESULT: The results of GLR indicate that the correlation between the six air pollutants and PrA with BWz varies depending on the different stages of pregnancy and pollutants. The QgC shows that during trimester 1, when air pollutants and PrA are considered as a whole exposure, an increase of one quartile is significantly negatively correlated with BWz. The BKMR similarly indicates that during trimester 1, the combined exposure of air pollutants and PrA is moderately correlated with a decrease in BWz. CONCLUSION: Using the method of analyzing mixed exposures, we found that during pregnancy, the combined exposure of air pollutants and PrA, particularly during trimester 1, is associated with BWz decrease. This supports the view that prenatal exposure to chemical and non-chemical stressors has an impact on fetal growth.


Assuntos
Poluentes Atmosféricos , Poluição do Ar , Efeitos Tardios da Exposição Pré-Natal , Gravidez , Feminino , Humanos , Peso ao Nascer , Estudos de Coortes , Estudos Prospectivos , Teorema de Bayes , Exposição Materna , Poluição do Ar/análise , Poluentes Atmosféricos/análise , China , Ansiedade , Material Particulado/análise
4.
Surg Endosc ; 37(10): 7591-7599, 2023 10.
Artigo em Inglês | MEDLINE | ID: mdl-37460818

RESUMO

BACKGROUND: In order to explore the surgical safety and the reliability of axillary staging of single-port endoscopic-sentinel lymph node biopsy, we combined it with indocyanine green that was excited by near-infrared fluorescence endoscopy and carbon nanoparticles as a tracer and compared this method to conventional open sentinel lymph node biopsy. METHODS: This is a retrospective and observational study, there were 20 patients in each group and the total sample size was 60: Group 1, single-port endoscopic-sentinel lymph node biopsy combined with indocyanine green and carbon nanoparticles; Group 2, single-port endoscopic-sentinel lymph node biopsy with carbon nanoparticles only; Group 3, conventional sentinel lymph node biopsy with indocyanine green and carbon nanoparticles. Sentinel lymph node detection and upper extremity function were determined to measure the safety and efficacy of the novel single-port endoscopic-sentinel lymph node biopsy (SPE-SLNB) technique to the standard conventional sentinel lymph node biopsy technique. RESULTS: The detection rate of sentinel lymph nodes was 100% in Group 1, 100% in Group 2, and 95% in Group 3. There were no significant differences in upper arm function and pain scores between the three groups. CONCLUSION: The novel technique of combining indocyanine green and carbon nanoparticles with single-port endoscopic-sentinel lymph node biopsy achieved a similar detection rate and mean number of sentinel lymph nodes as conventional sentinel lymph node biopsy. Traditional open surgery requires two different incisions for breast surgery and SLNB. While the most important advantage of SPE-SLNB is that two procedures can be effectively performed through a single-port in the axilla Therefore, for patients who meet the indications, single-port endoscopic-sentinel lymph node biopsy is as safe and reliable as conventional sentinel lymph node biopsy but has the aesthetic advantage of only one incision.


Assuntos
Neoplasias da Mama , Nanopartículas , Linfonodo Sentinela , Humanos , Feminino , Biópsia de Linfonodo Sentinela/métodos , Verde de Indocianina , Neoplasias da Mama/diagnóstico por imagem , Neoplasias da Mama/cirurgia , Neoplasias da Mama/patologia , Estudos Retrospectivos , Reprodutibilidade dos Testes , Linfonodo Sentinela/diagnóstico por imagem , Linfonodo Sentinela/cirurgia , Linfonodo Sentinela/patologia , Endoscopia , Carbono , Linfonodos/diagnóstico por imagem , Linfonodos/cirurgia , Linfonodos/patologia , Corantes
5.
Surg Endosc ; 37(5): 3842-3851, 2023 05.
Artigo em Inglês | MEDLINE | ID: mdl-36695902

RESUMO

INTRODUCTION: This study compares the perioperative results, aesthetic outcome and oncologic safety of single-port insufflation endoscopic nipple-sparing subcutaneous mastectomy combined with immediate reconstruction using prosthesis implantation (SIE-NSM-IRPI) with those of conventional open-nipple and areola-sparing subcutaneous mastectomy combined with immediate reconstruction using prosthesis implantation (C-NSM-IRPI). METHODS: In this retrospective cohort study, 64 early-stage breast cancer patients were divided into SIE-NSM-IRPI (n = 38) and C-NSM-IRPI (n = 26) groups. Perioperative results (operation time, intraoperative blood loss, incision length, drainage duration, and recent complications) were then compared between the two groups. Differences in satisfaction with the breasts, psychosocial well-being, physical well-being (chest) and sexual well-being were analyzed according to the BREAST-Q scale, and survival outcomes were also compared. RESULTS: The median follow-up time was 51.5 months. The incision length of SIE-NSM-IRPI was shorter than that of C-NSM-IRPI (P < 0.001). SIE-NSM-IRPI achieved the same detection rate and median number of sentinel lymph nodes as C-NSM-IRPI (3.00vs. 4.00, P = 0.780). The incidence of prosthesis removal due to infection or prosthesis exposure in the SIE-NSM-IRPI group was lower than that in the C-NSM-IRPI group (P = 0.015). Satisfaction with breasts (82.00vs.59.00, P < 0.001), psychosocial well-being (93.00vs.77.00, P = 0.001) and physical well-being (chest) (89.00vs.82.00, P < 0.001) scores were higher in the SIE-NSM-IRPI group. There were no significant differences between the two groups in disease-free survival (hazard ratio = 0.829, 95% confidence interval = 0.182-3.779) and overall survival (hazard ratio = 1.919, 95% confidence interval = 0.169-21.842). CONCLUSION: In this selected cohort of patients with early breast cancer, SIE-NSM-IRPI was comparable to C-NSM-IRPI, considering oncologic safety and detection of sentinel lymph nodes. It had a lower incidence of prosthesis removal, shorter incision length, and was associated with better patient satisfaction with the breasts. More random clinical trials of this novel approach in a larger cohort of Chinese patients with an extended follow-up period are needed in the future.


Assuntos
Neoplasias da Mama , Mamoplastia , Mastectomia Subcutânea , Feminino , Humanos , Neoplasias da Mama/cirurgia , Neoplasias da Mama/patologia , Mamoplastia/métodos , Mastectomia/métodos , Mastectomia Subcutânea/métodos , Mamilos/patologia , Mamilos/cirurgia , Estudos Retrospectivos
6.
Arch Gynecol Obstet ; 2023 Sep 29.
Artigo em Inglês | MEDLINE | ID: mdl-37773466

RESUMO

BACKGROUND: It has been suggested that gestational diabetes mellitus (GDM) alters the growth trajectory of a fetus and increases the risk of abnormal birth weight. In spite of this, there is still a significant debate regarding the mode and optimal timing of diagnosing this condition. Our aim was to determine fetal growth velocity and birth biometry in pregnant women with GDM at varying risk levels. METHODS: We conducted a cohort study involving 1023 pregnant women at a maternity hospital in Ma'anshan, China. All women completed an oral glucose tolerance test at 24-28 weeks' gestation. We measured fetal head circumference (HC), femoral length (FL), abdominal circumference (AC), biparietal diameter (BPD), and estimate fetal weight (EFW) by ultrasound at 17, 24, 31, and 35 weeks' gestation, respectively. RESULTS: Overall, 5115 ultrasound scans were performed. Among both low-risk and medium-high-risk pregnant women at 17-24 weeks' gestation, GDM exposure was associated with an increase in fetal growth velocity. Neonates born to women with GDM at medium-high risk had significantly larger birth weights than those born to women without GDM, while this was not observed in women at low risk. CONCLUSION: In medium-high-risk pregnant women, exposure to GDM has a greater effect on the fetus, leading to abnormal fetal growth velocity that lasts beyond week 24. It is evident from our results that the effects of GDM on fetal growth differ between medium-high-risk pregnant women and low-risk pregnant women, and therefore a different screening program based on the risk factor for GDM is warranted.

7.
Small ; 18(44): e2203140, 2022 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-36050887

RESUMO

Metal-organic frameworks (MOFs) with diverse composition, tunable structure, and unique physicochemical properties have emerged as promising materials in various fields. The tunable pore structure, abundant active sites, and ultrahigh specific surface area can facilitate mass transport and provide outstanding capacity, making MOFs an ideal active material for electrochemical energy storage and conversion. However, the poor electrical conductivity of pristine MOFs severely limits their applications in electrochemistry. Developing conductive MOFs has proved to be an effective solution to this problem. This review focuses on the design and synthesis of conductive MOF composites with judiciously chosen conducting materials, pristine MOFs, and assembly methods, as well as the preparation of intrinsically conductive MOFs based on building 2D π-conjugated structures, introducing mixed-valence metal ions/redox-active ligands, designing π-π stacked pathways, and constructing infinite metal-sulfur chains (-M-S-)∞ . Furthermore, recent progress and challenges of conductive MOFs for energy storage and conversion (supercapacitors, Li-ion batteries, Li-S batteries, and electrochemical water splitting) are summarized.

8.
Langmuir ; 38(6): 2145-2152, 2022 02 15.
Artigo em Inglês | MEDLINE | ID: mdl-35107017

RESUMO

A pH-triggered transition from micellar aggregation to a host-guest complex was achieved based on the supramolecular interactions between calixpyridinium and pyrroloquinoline quinone disodium salt (PQQ-2Na) accompanied by a color change. Our design has the following three advantages: (1) a regular spherical micellar assembly is fabricated by the supramolecular interactions between calixpyridinium and PQQ-2Na at pH 6 in an aqueous solution, (2) increasing the pH can lead to a transition from micellar aggregation to a host-guest complex due to the deprotonation of calixpyridinium, and at the same time (3) increasing the pH can lead to a color change owing to the deprotonation of calixpyridinium and the complexation of deprotonated calixpyridinium with PQQ-2Na. Benefitting from the low toxicity of calixpyridinium and PQQ-2Na, this pH-induced transition from micellar aggregation to a host-guest complex was further studied as a controllable-release model.


Assuntos
Micelas , Cofator PQQ , Concentração de Íons de Hidrogênio , Cofator PQQ/química , Água
9.
PLoS Comput Biol ; 17(7): e1009173, 2021 07.
Artigo em Inglês | MEDLINE | ID: mdl-34228708

RESUMO

Formation of the ventral furrow in the Drosophila embryo relies on the apical constriction of cells in the ventral region to produce bending forces that drive tissue invagination. In our recent paper we observed that apical constrictions during the initial phase of ventral furrow formation produce elongated patterns of cellular constriction chains prior to invagination and argued that these are indicative of tensile stress feedback. Here, we quantitatively analyze the constriction patterns preceding ventral furrow formation and find that they are consistent with the predictions of our active-granular-fluid model of a monolayer of mechanically coupled stress-sensitive constricting particles. Our model shows that tensile feedback causes constriction chains to develop along underlying precursor tensile stress chains that gradually strengthen with subsequent cellular constrictions. As seen in both our model and available optogenetic experiments, this mechanism allows constriction chains to penetrate or circumvent zones of reduced cell contractility, thus increasing the robustness of ventral furrow formation to spatial variation of cell contractility by rescuing cellular constrictions in the disrupted regions.


Assuntos
Drosophila/embriologia , Embrião não Mamífero/fisiologia , Retroalimentação Fisiológica/fisiologia , Gastrulação/fisiologia , Animais , Fenômenos Biomecânicos/fisiologia , Biologia Computacional , Modelos Biológicos
10.
World J Surg Oncol ; 20(1): 335, 2022 Oct 06.
Artigo em Inglês | MEDLINE | ID: mdl-36203177

RESUMO

BACKGROUND: In the surgical treatment of breast cancer, the goal of surgeons is to continually create and improve minimally invasive surgical techniques to increase patients' quality of life. Currently, routine breast-conserving surgery is often performed using two obvious incisions. Here, we compare the clinical efficacy and aesthetic outcomes of a novel technique using one incision, called 'single-port insufflation endoscopic breast-conserving surgery' (SIE-BCS), vs. conventional breast-conserving surgery (C-BCS) in patients with early-stage breast cancer. METHODS: A total of 180 patients with stage I or stage II breast cancer participated in this study, of whom 63 underwent SIE-BCS and 117 underwent C-BCS. Logistic regression analysis was conducted to assess the risk of local recurrence and metastasis. Aesthetic outcomes were evaluated using the BREAST-Q scale. RESULTS: The mean operation time was significantly longer for SIE-BCS (194.9 ± 71.5 min) than for C-BCS (140.3 ± 56.9 min), but the mean incision length was significantly shorter for SIE-BCS than for C-BCS (3.4 ± 1.2 cm vs. 8.6 ± 2.3 cm). While both surgeries yielded similar BREAST-Q ratings for satisfaction with breasts and sexual well-being, SIE-BCS was associated with significantly better ratings for physical well-being (chest area) and psychological well-being. Additionally, SIE-BCS was associated with decreased rates of adverse effects of radiation. The preliminary analysis showed that SIE-BCS did not increase the risk of local recurrence or metastasis. CONCLUSION: The novel single-port insufflation endoscopic assisted BCS technique is feasible, safe, and improves patients' postoperative comfort and psychological well-being, as compared to the conventional technique.


Assuntos
Neoplasias da Mama , Insuflação , Neoplasias da Mama/patologia , Endoscopia , Feminino , Humanos , Mastectomia Segmentar/efeitos adversos , Mastectomia Segmentar/métodos , Qualidade de Vida
11.
Cancer Cell Int ; 21(1): 550, 2021 Oct 18.
Artigo em Inglês | MEDLINE | ID: mdl-34663343

RESUMO

BACKGROUND: Emerging studies have shown that long noncoding RNAs (lncRNAs) predominantly function in the carcinogenesis of multiple developing human tumors. The current study aimed to investigate the underlying mechanisms of LINC00337 in lung adenocarcinoma. METHODS: We analyzed TCGA and GTEx datasets and chose LINC00337 as the research object. Cell proliferation, cell apoptosis, cell cycle, migration, and invasion were detected in the gain and loss experiments of LINC00337 both in vitro and in vivo. Moreover, RNA pull-down, luciferase reporter assays, western blotting analysis, and rescue experiments were performed to investigate the underlying molecular mechanisms of LINC00337 function. RESULTS: LINC00337 expression was remarkably upregulated in lung adenocarcinoma. In addition, LINC00337 knockdown was shown to repress cell migration, invasion, and proliferation, as well as the cell cycle, and gear up apoptosis in lung adenocarcinoma in vitro and in vivo. With respect to the mechanism, LINC00337 knockdown boosted miR-1285-3p expression and then restrained YTHDF1 expression post-transcriptionally. Crucially, both miR-1285-3p decrement and YTHDF1 overexpression successfully reversed the influence on cell proliferation, migration, invasion, and apoptosis caused by LINC00337 shRNA. CONCLUSIONS: These results suggest that LINC00337 acts as an oncogenic lncRNA, targeting miR-1285-3p and regulating YTHDF1 expression, to promote the progression of lung adenocarcinoma.

12.
Langmuir ; 37(38): 11422-11428, 2021 Sep 28.
Artigo em Inglês | MEDLINE | ID: mdl-34519205

RESUMO

It is a great challenge to precisely control the molecules that self-assemble into diverse shapes with diverse properties. Herein, the self-assembled behaviors between calixpyridinium and two pyrenesulfonate guests, 1,3,6,8-pyrenetetrasulfonic acid tetrasodium salt (PyTS) and sodium 1-pyrenesulfonate (PS), were studied. The morphology and property of the two assemblies were quite different. PS guests self-assembled into spherical aggregates upon complexation with calixpyridinium, while the self-assembled rodlike aggregates were formed via the binding between calixpyridinium and PyTS guests. The calixpyridinium-PS supramolecular aggregates could not emit fluorescence in the solid state, while a strong green fluorescence was emitted by the calixpyridinium-PyTS supramolecular aggregates in the solid state. More interestingly and importantly, the solid calixpyridinium-PyTS supramolecular aggregates exhibited an adsorbent ability to iodine in both the aqueous solution and the vapor phase, while the solid calixpyridinium-PS supramolecular aggregates could not capture iodine. The diverse iodine capture capability of the two supramolecular aggregates was determined by the self-assembled structure at the molecular level.

13.
Arch Gynecol Obstet ; 304(3): 671-677, 2021 09.
Artigo em Inglês | MEDLINE | ID: mdl-33987686

RESUMO

PURPOSE: Endometriosis is a common chronic gynecological disease greatly affecting women health. Prior studies have implicated that dysferlin (DYSF) aberration might be involved in the pathogenesis of ovarian endometriosis. In the present study, we explore the potential presence of DYSF mutations in a total of 152 Han Chinese samples with ovarian endometriosis. METHODS: We analyze the potential presence of DYSF mutations by direct DNA sequencing. RESULTS: A total of seven rare variants/mutations in the DYSF gene in 10 out of 152 samples (6.6%) were identified, including 5 rare variants and 2 novel mutations. For the 5 rare variants, p.R334W and p.G941S existed in 2 samples, p.R865W, p.R1173H and p.G1531S existed in single sample, respectively; for the two novel mutations, p.W352* and p.I1642F, they were identified in three patients. These rare variants/mutations were absent or existed at extremely low frequency either in our 1006 local control women without endometriosis, or in the China Metabolic Analytics Project (ChinaMAP) and Genome Aggregation Database (gnomAD) databases. Evolutionary conservation analysis results suggested that all of these rare variants/mutations were evolutionarily conserved among 11 vertebrate species from Human to Fox. Furthermore, in silico analysis results suggested these rare variants/mutations were disease-causing. Nevertheless, we find no significant association between DYSF rare variants/mutations and the clinical features in our patients. To our knowledge, this is the first report revealing frequent DYSF mutations in ovarian endometriosis. CONCLUSION: We identified a high frequency of DYSF rare variants/mutations in ovarian endometriosis for the first time. This study suggests a new correlation between DYSF rare variants/mutations and ovarian endometriosis, implicating DYSF rare variants/mutations might be positively involved in the pathogenesis of ovarian endometriosis.


Assuntos
Disferlina/genética , Endometriose/genética , Doenças Ovarianas/genética , Adulto , Povo Asiático/genética , China/epidemiologia , Endometriose/etnologia , Feminino , Humanos , Mutação , Doenças Ovarianas/etnologia
14.
J Cell Mol Med ; 24(10): 5751-5757, 2020 05.
Artigo em Inglês | MEDLINE | ID: mdl-32285549

RESUMO

The aim of this study was to investigate in vitro magnetic resonance imaging (MRI) of PDAC using ENO1-targeted superparamagnetic iron oxide nanoparticles and xenograft models. Expression level and location of ENO1 protein in pancreatic cancer cell lines of CFPAC-1 and MiaPaCa-2 were detected by Western blotting, flow cytometry and confocal microscopy. Dex-g-PCL/SPIO nanoparticles targeting ENO1 were constructed with ENO1 antibody and characterized by MRI. In addition, ENO1-Dex-g-PCL/SPIO nanoparticles were tested to assess their efficacy on the detection of PDAC using in vitro and in vivo MRI. The results showed that ENO1 was expressed in both human PDAC cell lines of CFPAC-1 and MiaPaCa-2, demonstrating that the localization of cytoplasm and membrane was dominant. It was confirmed that ENO1 antibody was connected to the SPIO surface in ENO1-Dex-g-PCL/SPIO nanoparticles. The nanoparticles had satisfactory superparamagnetism and significantly enhance the detection of PDAC by in vivo and in vitro MRI. In conclusion, ENO1 can serve as a membrane protein expressed on human PDAC cell lines. ENO1-targeted SPIO nanoparticles using ENO1 antibody can increase the efficiency of detection of PDAC by in vitro and in vivo MRI.


Assuntos
Biomarcadores Tumorais/metabolismo , Proteínas de Ligação a DNA/metabolismo , Nanopartículas Magnéticas de Óxido de Ferro/química , Imageamento por Ressonância Magnética , Neoplasias Pancreáticas/diagnóstico por imagem , Neoplasias Pancreáticas/diagnóstico , Fosfopiruvato Hidratase/metabolismo , Proteínas Supressoras de Tumor/metabolismo , Animais , Linhagem Celular Tumoral , Dextranos/química , Humanos , Nanopartículas Magnéticas de Óxido de Ferro/ultraestrutura , Masculino , Camundongos Endogâmicos BALB C , Camundongos Nus , Neoplasias Pancreáticas/patologia , Poliésteres/química
15.
J Org Chem ; 85(4): 2733-2742, 2020 Feb 21.
Artigo em Inglês | MEDLINE | ID: mdl-31906619

RESUMO

A protocol of visible-light-promoted C2 selective arylation of quinoline and pyridine N-oxides, with diaryliodonium tetrafluoroborate as an arylation reagent, using eosin Y as a photocatalyst for the construction of N-heterobiaryls was presented. This methodology provided an efficient way for the synthesis of 2-aryl-substituted quinoline and pyridine N-oxides. This strategy has the following advantages: specific regioselectivity, simple operation, good functional group tolerance, and high to moderate yields under mild conditions.

17.
Breast J ; 25(3): 461-464, 2019 05.
Artigo em Inglês | MEDLINE | ID: mdl-30945388

RESUMO

To compare the clinical efficacy and aesthetic perspectives between single-port gasless laparoscopic breast-conserving surgery (SGL-BCS) and traditional breast-conserving surgery (T-BCS) in early-stage breast cancer. A total of 70 patients who were diagnosed with stage I or stage II breast cancer participated in this study, which 35 patients underwent SGL-BCS, while others underwent T-BCS. There were no death or severe intraoperative complications, and none of the patients exhibited regional recurrence, distant metastases, or any critical complications after 2 years follow-up. SGL-BCS is feasible and safe surgery, and has advantages in terms of a single, shorter, hidden incision, high-satisficed aesthetic outcome and less intraoperative blood loss.


Assuntos
Neoplasias da Mama/cirurgia , Laparoscopia/métodos , Mastectomia Segmentar/métodos , Adulto , Idoso , Perda Sanguínea Cirúrgica , Neoplasias da Mama/patologia , Feminino , Humanos , Laparoscopia/efeitos adversos , Laparoscopia/instrumentação , Margens de Excisão , Mastectomia Segmentar/efeitos adversos , Mastectomia Segmentar/instrumentação , Pessoa de Meia-Idade , Satisfação do Paciente , Resultado do Tratamento
18.
Biochem Biophys Res Commun ; 501(2): 478-485, 2018 06 22.
Artigo em Inglês | MEDLINE | ID: mdl-29746863

RESUMO

The epigenetic effects on expression of non-coding RNAs (e.g. microRNAs) of environmental toxin bisphenol A (BPA) have extended our understanding of the etiology of human reproductive disorders including hypospermatogenesis and androgen deficiency. BPA-induced miR-146a-5p is a potent regulator of endocrine and immune homeostasis, but its role in testis remain unexplored. We show here that in murine testis, miR-146a-5p was exclusively expressed in interstitial Leydig cells (LCs). This expression was significantly induced by BPA exposure. Consequently, the elevated miR-146a-5p exacerbated the deleterious effects of BPA on testicular steroidogenesis. Mechanistically, miR-146a-5p repressed the expression of Mta3, a pivotal chromatin remodeling transcription factor recently involved in controlling the steroidogenic activity, via directly targeting its 3'UTR. This repression thereafter rendered LCs more sensitive to BPA-elicited inhibitory effects. Conversely, ectopic expression of hMTA3 successfully rescued miR-146a-5p-elicited inhibitory effects on testicular steroidogenesis in BPA-challenged LCs. Taken together, the available data provide novel evidence that deregulation of testicular miR-146a-5p/Mta3 cascade mediates, at least in part, the steroidogenic dysfunction caused by BPA exposure.


Assuntos
Compostos Benzidrílicos/efeitos adversos , Regulação da Expressão Gênica/efeitos dos fármacos , MicroRNAs/genética , Proteínas de Neoplasias/genética , Fenóis/efeitos adversos , Transdução de Sinais/efeitos dos fármacos , Esteroides/metabolismo , Testículo/efeitos dos fármacos , Regiões 3' não Traduzidas/efeitos dos fármacos , Animais , Epigênese Genética/efeitos dos fármacos , Células Intersticiais do Testículo/efeitos dos fármacos , Células Intersticiais do Testículo/metabolismo , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Proteínas de Neoplasias/metabolismo , Testículo/metabolismo
19.
Biochem Biophys Res Commun ; 495(2): 2092-2097, 2018 01 08.
Artigo em Inglês | MEDLINE | ID: mdl-29198712

RESUMO

FBW7, a key component of SCFFBW7 E3 ubiquitin ligase, targets various proteins for degradation via the conserved Cdc4 phosphodegron (CPD) in substrates. In this study, we report that KLF10 is degraded by FBW7 via a conserved CPD. Through systematic analysis of the degradation of KLF transcription factors by FBW7, we identified KLF10 as a novel degradation target of FBW7. Ectopic expression of FBW7 markedly promoted the degradation of KLF10 while knockdown of endogenous FBW7 increased the protein levels of KLF10. In addition, simultaneous mutations of both threonine 82 (T82) and serine 86 (S86) significantly reduced the FBW7-mediated KLF10 degradation. Moreover, KLF10 containing a conserved putative CPD (TPPXSP) from amino acids 82 to 87, directly interacted with WD40 domain of FBW7 in a phosphorylation-dependent manner. Importantly, FBW7 could reverse the KLF10-mediated inhibition of Smad7 activity. Thus, our study uncovers a novel regulatory mechanism underlying which KLF10 stability and its biological function are mediated by FBW7.


Assuntos
Fatores de Transcrição de Resposta de Crescimento Precoce/metabolismo , Proteína 7 com Repetições F-Box-WD/metabolismo , Fatores de Transcrição Kruppel-Like/metabolismo , Ubiquitina/metabolismo , Proteínas Ubiquitinadas/metabolismo , Ubiquitinação/fisiologia , Sítios de Ligação , Fatores de Transcrição de Resposta de Crescimento Precoce/química , Ativação Enzimática , Proteína 7 com Repetições F-Box-WD/química , Células HEK293 , Células HeLa , Humanos , Fatores de Transcrição Kruppel-Like/química , Ligação Proteica , Mapeamento de Interação de Proteínas , Especificidade por Substrato , Proteínas Ubiquitinadas/química
20.
Nanotechnology ; 29(45): 452001, 2018 Nov 09.
Artigo em Inglês | MEDLINE | ID: mdl-30142088

RESUMO

The rapid development of advanced nanotechnology has continuously changed many aspects of society. One important nanostructured material, magnetic nanoparticles (NPs), has applications in many areas including clean energy, biology and engineering because of their special magnetic properties. The synthesis of magnetic nanomaterials with desired sizes and morphology has attracted great attention. Nanomaterials with different properties can be combined to construct multifunctional nanoplatforms through systematic surface engineering. The surface modification of magnetic NPs presents the opportunity for them to be used in many practical applications. Functionalized magnetic NPs have been successfully applied in catalysis, as thermoelectric materials, for drug delivery, as imaging agents in nuclear magnetic resonance and in biosensors. In this review, synthetic methods for magnetic NPs and some of their important properties are described. Then the latest progress of the application of magnetic NPs in energy and biology has been summarized and discussed. Finally, we discuss some issues that still need to be solved and the prospects for magnetic NPs.

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