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1.
Int J Obes (Lond) ; 48(3): 394-402, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38066333

RESUMO

BACKGROUND: Obesity is a common feature in women with polycystic ovary syndrome (PCOS) and is associated with multiple adverse reproductive outcomes. However, the impact of overweight and obesity on reproductive outcomes of women with PCOS who underwent in vitro fertilization-embryo transfer (IVF-ET) is currently controversial and appropriate body mass index (BMI) levels differ across ethnic groups. METHODS: This was a retrospective study including 1066 women with PCOS receiving IVF treatment at our institution between January 2018 and June 2021, among whom 960 underwent their first fresh or frozen embryo transfer. Participants were categorized according to BMI cut-off values proposed by the World Health Organization for Asian populations: normal weight (BMI < 23 kg/m2), overweight (BMI: 23-24.9 kg/m2), and obesity (BMI ≥ 25 kg/m2). The effect of BMI on clinical and embryological outcomes was evaluated by descriptive statistics and logistic regression models with confounders adjusted. The dose-response relationship between BMI as a continuous variable and IVF outcomes is also explored. INTERVENTIONS: no RESULTS: Increasing BMI was associated with significantly lower numbers of total oocytes retrieved, metaphase II oocytes, two pronuclear (2PN) zygotes, and good-quality embryos among women with PCOS. Patients with PCOS with a BMI ≥ 23 kg/m2 had significantly lower live birth rates (41.9% vs. 49.1%; adjusted odds ratio [aOR], 0.75; 95% confidence interval [CI], 0.57-0.97) and implantation rates (35.8% vs. 43.9%; aOR, 0.76; 95% CI, 0.61-0.93) than those with normal BMI. Moreover, BMI showed a non-linear relationship (p for nonlinearity <0.001) with the number of 2PN zygotes with the curve becoming steeper as BMI surpassed 22.4 kg/m2. CONCLUSIONS: Patients with PCOS with a BMI ≥ 23 kg/m2 have lower live birth rates than those with a BMI < 23 kg/m2. Defining obesity and overweight with ethnicity-specific BMI cut-offs may help to improve IVF outcomes among PCOS patients.


Assuntos
Sobrepeso , Síndrome do Ovário Policístico , Gravidez , Humanos , Feminino , Sobrepeso/complicações , Sobrepeso/epidemiologia , Síndrome do Ovário Policístico/complicações , Índice de Massa Corporal , Fertilização in vitro , Estudos Retrospectivos , Taxa de Gravidez , Obesidade/complicações , Obesidade/epidemiologia , China/epidemiologia
2.
Oral Dis ; 29(2): 469-482, 2023 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-34085359

RESUMO

OBJECTIVES: Tongue squamous cell carcinoma (TSCC) is the most common malignancy in oral cancer. Long noncoding RNAs (lncRNAs) are important regulators in cancer biology. In our present study, we investigated a novel lncRNA IGF-like family member 2 antisense RNA 1 (IGFL2-AS1) in TSCC. METHODS: RT-qPCR analyzed IGFL2-AS1 expression in TSCC cells. Functional assays assessed the impact of IGFL2-AS1 on TSCC cell proliferation, migration, and invasion. Western blot analyzed the protein levels of EMT-related markers. Mechanism assays analyzed the regulatory mechanism of IGFL2-AS1 in TSCC cells. In-vivo experiments were conducted to prove the role of IGFL2-AS1 in TSCC progression. RESULTS: IGFL2-AS1 was significantly up-regulated in TSCC cells and tissues, and IGFL2-AS1 knockdown inhibited cell proliferation, migration, invasion and EMT in TSCC. Moreover, IGFL2-AS1 functioned as a competing endogenous RNA (ceRNA) to sponge miR-1224-5p and thereby modulated SATB homeobox 1 (SATB1) expression. Additionally, SATB1 activated the Wnt/ß-catenin signaling pathway in TSCC cells and IGFL2-AS1 regulated the Wnt/ß-catenin signaling pathway and TSCC progression via elevating SATB1 expression. CONCLUSIONS: The data revealed that IGFL2-AS1 played a cancer promoting role in TSCC and may aid in exploring a brand new biomarker that might contribute to TSCC treatment.


Assuntos
Carcinoma de Células Escamosas , Proteínas de Ligação à Região de Interação com a Matriz , MicroRNAs , RNA Longo não Codificante , Neoplasias da Língua , Humanos , Neoplasias da Língua/patologia , Carcinoma de Células Escamosas/patologia , Via de Sinalização Wnt/genética , Proteínas de Ligação à Região de Interação com a Matriz/genética , Proteínas de Ligação à Região de Interação com a Matriz/metabolismo , Linhagem Celular Tumoral , MicroRNAs/genética , MicroRNAs/metabolismo , Proliferação de Células/genética , Movimento Celular/genética , Língua , RNA Longo não Codificante/genética , Regulação Neoplásica da Expressão Gênica
3.
J Oral Maxillofac Surg ; 81(12): 1504-1516, 2023 12.
Artigo em Inglês | MEDLINE | ID: mdl-37775088

RESUMO

PURPOSE: The use of intraoperative imaging (IOI) to improve the reduction adequacy of zygomatic arch (ZMA) fractures has been reported, but few systematic reviews have examined this topic. The aim of this review was to investigate and compare the value of IOI with conventional methods without IOI (N-IOI) for the closed reduction of ZMA fractures. METHODS: Electronic retrieval of MEDLINE, Embase, Cochrane Library, Web of Science, Scopus, and citation search until December 2, 2022, was used to identify controlled clinical trials that employed IOI for improving adequacy in closed reduction of ZMA fractures. The predictor variable was the use of IOI-yes/no (IOI vs N-IOI). The covariates included imaging technique (ultrasound, C-arm, and cone beam computed tomography) and ZMA fracture type (M-shape fracture, mechanistic force in 1 direction; variable fracture, mechanistic force in 2 directions). The primary outcome variables were the reduction adequacy of ZMA fractures (the remaining cortical step and dislocation angle) compared with the ideal mirrored position. Weighted or mean differences, risk ratios, and corresponding 95% confidence intervals were calculated, where P >.05 and I2<50% fixed effect model was adopted, and a vice versa random effect model was adopted. RESULTS: A total of 1250 studies were identified, of which 6 studies with 259 participants were included. The meta-analysis results indicated that compared with N-IOI, IOI yielded fewer cortical steps (-1.76 [-2.42, 1.10], P <.00001, fixed model) and dislocation angles (-5.60 [-8.08, 3.12], P<.00001, fixed model) in patients with variable ZMA fractures, while no significant difference was detected in the M-shape ZMA fracture (-0.72, [-2.93, 1.48], P = .52; -1.48, [-3.51, 0.55], P = .15). Although there was no significant difference in postoperative correction (0.35, [0.06, 2.01] P = .24, fixed model), all secondary revision cases occurred in the N-IOI group. Descriptive analysis showed that IOI yielded better symmetry and appearance satisfaction. CONCLUSION: IOI improved the adequacy of the procedure and led to a better postoperative appearance, especially for patients with variable ZMA fractures. Furthermore, the use of IOI avoided the risk of secondary surgery. In future studies, researchers should standardize the scale and outcomes to facilitate the intuitive evaluation of reduction adequacy.


Assuntos
Fraturas Cranianas , Fraturas Zigomáticas , Humanos , Zigoma/cirurgia , Fraturas Zigomáticas/diagnóstico por imagem , Fraturas Zigomáticas/cirurgia , Tomografia Computadorizada de Feixe Cônico , Ultrassonografia
4.
J Oral Maxillofac Surg ; 81(7): 892-903, 2023 07.
Artigo em Inglês | MEDLINE | ID: mdl-37084764

RESUMO

PURPOSE: The application of a computer-aided navigation system (CANS) in zygomatic complex (ZMC) fractures has been extensively reported, but individual results are heterogeneous. The purpose of this systematic review was to evaluate the role of CANS in the surgical treatment of unilateral ZMC fractures. METHODS: Electronic retrieval of MEDLINE, Embase, and Cochrane Library (CENTRAL) and manual searching until November 1, 2022 were used to identify cohort studies and randomized controlled trials employing CANS in the surgical treatment of ZMC fractures. The identified reports contained at least 1 of the following outcome variables: accuracy of reduction, total treatment time, amount of bleeding, postoperative complications, satisfaction, and cost. Weighted or mean differences (MD), risk ratios, and corresponding 95% confidence intervals (CI) were calculated, where P<.05 and I2>50% random-effect model was adopted, and a vice versa fixed-effect model was adopted. Descriptive analysis was applied to qualitative statistics. The protocol was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines and prospectively registered with PROSPERO (CRD42022373135). RESULTS: A total of 562 studies were identified, of which 2 cohort studies and 3 randomized controlled trials with 189 participants were included. Meta-analysis indicated that employing CANS significantly decreased the reduction error (MD = -0.86, 95% CI -1.58 to -0.14; P = .02, random-effect model) compared with conventional surgery without using CANS. The differences in total treatment time (preoperative planning time: MD = 1.44, 95% CI -3.55 to 6.43; P = .57 and operative time: MD = 3.02, 95% CI -9.21 to 15.26; P = .63, fixed-effect model) and amount of bleeding (MD = 14.86, 95% CI -8.86 to 38.58; P = .22, fixed-effect model) were not statistically significant between the two groups. Descriptive analysis suggested that postoperative complications, postoperative satisfaction, and cost were also similar with or without CANS. CONCLUSION: Within the limitations of the present review, the reduction accuracy of unilateral ZMC fractures using CANS is superior to that of conventional surgery. CANS presents limited influence on operation time, amount of bleeding, postoperative complications, postoperative satisfaction, and cost.


Assuntos
Cirurgia Assistida por Computador , Fraturas Zigomáticas , Humanos , Fraturas Zigomáticas/cirurgia , Complicações Pós-Operatórias , Duração da Cirurgia , Hemorragia Pós-Operatória
5.
Molecules ; 28(12)2023 Jun 14.
Artigo em Inglês | MEDLINE | ID: mdl-37375313

RESUMO

Poly(ADP-ribose) polymerase-1 (PARP1) is a potential biomarker and therapeutic target for cancers that can catalyze the poly-ADP-ribosylation of nicotinamide adenine dinucleotide (NAD+) onto the acceptor proteins to form long poly(ADP-ribose) (PAR) polymers. Through integration with aggregation-induced emission (AIE), a background-quenched strategy for the detection of PARP1 activity was designed. In the absence of PARP1, the background signal caused by the electrostatic interactions between quencher-labeled PARP1-specitic DNA and tetraphenylethene-substituted pyridinium salt (TPE-Py, a positively charged AIE fluorogen) was low due to the fluorescence resonance energy transfer effect. After poly-ADP-ribosylation, the TPE-Py fluorogens were recruited by the negatively charged PAR polymers to form larger aggregates through electrostatic interactions, thus enhancing the emission. The detection limit of this method for PARP1 detection was found to be 0.006 U with a linear range of 0.01~2 U. The strategy was used to evaluate the inhibition efficiency of inhibitors and the activity of PARP1 in breast cancer cells with satisfactory results, thus showing great potential for clinical diagnostic and therapeutic monitoring.


Assuntos
NAD , Poli(ADP-Ribose) Polimerases , Poli(ADP-Ribose) Polimerases/metabolismo , Eletricidade Estática , Poli(ADP-Ribose) Polimerase-1/metabolismo , NAD/metabolismo
6.
J Bioenerg Biomembr ; 53(1): 85-96, 2021 02.
Artigo em Inglês | MEDLINE | ID: mdl-33420975

RESUMO

Kallikrein-associated peptidase 11 (KLK11) has emerged as a key tumor-associated protein that is implicated in a wide spectrum of tumor types. However, the detailed involvement of KLK11 in laryngeal squamous cell carcinoma (LSCC) has not been well studied. The aims of our work were to evaluate whether KLK11 plays a role in LSCC. We found that both the mRNA and protein expression of KLK11 were significantly lower in LSCC tissues than in normal tissues. Low expression of KLK11 was also observed in LSCC cell lines, and the up-regulation of KLK11 caused a significant inhibitory effect on the proliferation, colony formation and invasion of LSCC cells. On the contrary, the knockdown of KLK11 markedly accelerated the proliferative and invasive abilities of LSCC cells. Molecular mechanism research revealed that KLK11 overexpression decreased the phosphorylation of glycogen synthase kinase-3ß (GSK-3ß) and down-regulated the expression of active ß-catenin, leading to the inactivation of Wnt/ß-catenin signaling in LSCC cells. Furthermore, GSK-3ß inhibition markedly abrogated the KLK11-mediated suppressive effect on Wnt/ß-catenin signaling. Notably, the reactivation of Wnt/ß-catenin partially reversed KLK11-mediated tumor-inhibition effect in LSCC. In addition, the xenograft tumor assay demonstrated that the up-regulation of KLK11 retarded tumor formation and the growth of LSCC cells in vivo. Taken together, the findings of our work demonstrate that KLK11 exerts a tumor-inhibition role in LSCC by down-regulating Wnt/ß-catenin signaling. Our work highlights a pivotal role of KLK11 in LSCC progression and suggests it as an attractive anticancer target for LSCC treatment.


Assuntos
Neoplasias de Cabeça e Pescoço/metabolismo , Proteínas Proto-Oncogênicas c-akt/metabolismo , Serina Endopeptidases/metabolismo , Carcinoma de Células Escamosas de Cabeça e Pescoço/metabolismo , Via de Sinalização Wnt , beta Catenina/metabolismo , Animais , Neoplasias de Cabeça e Pescoço/genética , Neoplasias de Cabeça e Pescoço/patologia , Xenoenxertos , Humanos , Masculino , Camundongos , Camundongos Endogâmicos BALB C , Camundongos Nus , Carcinoma de Células Escamosas de Cabeça e Pescoço/genética , Carcinoma de Células Escamosas de Cabeça e Pescoço/patologia
7.
J Bioenerg Biomembr ; 53(2): 235-245, 2021 04.
Artigo em Inglês | MEDLINE | ID: mdl-33604734

RESUMO

Long non-coding RNA (lncRNA) AGAP2-AS1 acts as an oncogene in several types of cancers. However, the role and mechanism of AGAP2-AS1 in papillary thyroid carcinoma (PTC) remain unclear. Thus, in this study, we aimed to explore the role of AGAP2-AS1 in PTC. Our results showed that AGAP2-AS1 was significantly upregulated in PTC tissues. Knockdown of AGAP2-AS1 inhibited the proliferation, migration and invasion of PTC cells. In vivo experiment showed that AGAP2-AS1 knockdown inhibited the tumorigenesis of PTC. MiR-628-5p was found to act as a target miRNA of AGAP2-AS1 in PTC. The expression level of miR-628-5p in PTC tissues was negatively associated with that of AGAP2-AS1. Inhibition of miR-628-5p attenuated the effects of AGAP2-AS1 knockdown on PTC. Moreover, miR-628-5p directly bound to the 3'UTR of KLF12 and inhibited the expression of KLF12. Knockdown of KLF12 enhanced the inhibitory effects of miR-628-5p on PTC cell proliferation and metastasis. In conclusion, these findings indicated that AGAP2-AS1 exerted an oncogenic role in PTC progression and metastasis. The effects of AGAP2-AS1 might be mediated by the regulation of miR-628-5p/KLF12 axis.


Assuntos
MicroRNAs/metabolismo , RNA Longo não Codificante/genética , Câncer Papilífero da Tireoide/genética , Neoplasias da Glândula Tireoide/genética , Animais , Linhagem Celular Tumoral , Proliferação de Células , Humanos , Fatores de Transcrição Kruppel-Like/metabolismo , Camundongos , Transdução de Sinais , Câncer Papilífero da Tireoide/patologia , Neoplasias da Glândula Tireoide/patologia
8.
Mol Med ; 26(1): 57, 2020 06 11.
Artigo em Inglês | MEDLINE | ID: mdl-32527212

RESUMO

BACKGROUND: Esophageal cancer (EC) is one of the most common human cancers, with a particularly aggressive behavior and increased incidence worldwide. The aim of this study was to assess the associations of single-nucleotide polymorphisms (SNPs) in IL-1B with the risk of EC in a northwest Chinese Han population. METHODS: In order to evaluate the correlations between IL-1B polymorphisms and EC risk, an Agena MassARRAY platform was used to determine the genotype of the candidate SNPs among 384 EC patients and 499 controls. The associations between IL-1B variants and EC risk were examined using logistic regression analysis with adjustment for gender and age. Haplotype construction and analysis were performed to detect the potential associations between haplotypes within IL-1B and EC susceptibility. Additionally, bioinformatics databases were used for gene expression analysis and SNP functional prediction. RESULTS: A significant relationship was found between IL-1B rs2853550 and an increased risk of EC in the allele model [odds ratio (OR) = 1.38, 95% confidence interval (95% CI): 1.01-1.89, p = 0.041), the codominant model (A/G, OR = 1.63, 95% CI: 1.10-2.42, p = 0.011), and the dominant model (OR = 1.49, 95% CI: 1.02-2.18, p = 0.041). Functional analysis revealed the potential effects of rs2853550, which further reinforced its influence on EC susceptibility. However, there were no statistically significant differences for other SNPs or haplotypes between EC cases and healthy controls. Expression analysis conducted with dataset indicated that the expression level of IL-1B was higher in EC cases than that in normal samples. CONCLUSIONS: This study demonstrated that rs2853550 in IL-1B might increase EC susceptibility in the Chinese Han population of Northwest China.


Assuntos
Alelos , Neoplasias Esofágicas/genética , Predisposição Genética para Doença , Interleucina-1beta/genética , Polimorfismo de Nucleotídeo Único , Estudos de Casos e Controles , China/epidemiologia , Mapeamento Cromossômico , Feminino , Frequência do Gene , Estudos de Associação Genética , Genótipo , Haplótipos , Humanos , Desequilíbrio de Ligação , Masculino
9.
Mol Carcinog ; 59(10): 1140-1146, 2020 10.
Artigo em Inglês | MEDLINE | ID: mdl-32790111

RESUMO

The purpose of this study was to investigate the effect of IL-1RN polymorphisms on thyroid cancer (TC) risk in Han population. Genotypes of four single nucleotide polymorphisms (SNPs) (rs17042888, rs928940, rs3181052, and rs452204) were analyzed by Agena MassARRAY. Meanwhile, we used the logistic regression to calculate the odds ratios (ORs) and 95% confidence intervals (CIs), and significant differences were evaluated by t test and χ2 test. Findings found that allele "G" of rs452204 and rs3181052 in interleukin-1 receptor antagonist (IL-1RN) reduced the risk of TC. (OR = 0.72, 95% CI = 0.55-0.94, p = .017; OR = 0.73, 95% CI = 0.56-0.94, p = .017, respectively). Hierarchical analysis indicated that three SNPs (rs17042888, rs3181052, and rs452204) significantly reduced the risk of TC among females or individuals older than 48 years (p < .05). Our findings indicate that IL-1RN polymorphisms may contribute to a protective role against TC risk.


Assuntos
Povo Asiático/genética , Biomarcadores Tumorais/genética , Proteína Antagonista do Receptor de Interleucina 1/genética , Neoplasias da Glândula Tireoide/genética , Estudos de Casos e Controles , China/epidemiologia , Feminino , Seguimentos , Predisposição Genética para Doença , Genótipo , Humanos , Masculino , Pessoa de Meia-Idade , Polimorfismo de Nucleotídeo Único , Prognóstico , Neoplasias da Glândula Tireoide/epidemiologia , Neoplasias da Glândula Tireoide/patologia
10.
BMC Surg ; 20(1): 4, 2020 Jan 06.
Artigo em Inglês | MEDLINE | ID: mdl-31907042

RESUMO

BACKGROUND: To evaluate the efficacy of a sensitive, real-time tool for identification and protection for parathyroid glands during thyroidectomy. METHODS: Near-infrared (NIR) auto-fluorescence was measured intraoperatively from 20 patients undergoing thyroidectomy. Spectra were measured from suspicious parathyroid glands and surrounding neck tissues during the operation with a NIR fluorescence system. Fast frozen sections were performed on the suspicious parathyroid glands. Accuracy was evaluated by comparison with histology and NIR identification. Data were attracted for Fisher's linear discriminant analysis. RESULTS: The auto-fluorescence intensity of parathyroid was significantly higher than that of thyroid, fat and lymph node. The peak intensity of auto-fluorescence from parathyroid was 5.55 times of that from thyroid at the corresponding wave number. Of the 20 patients, the parathyroid was accurately detected and identified in 19 patients by NIR system, compared with their histologic results. One suspicious parathyroid did not exhibit typical spectra, and was proved to be fat tissue by histology. The NIR auto-fluorescence method had a 100% sensitivity of parathyroid glands identification and a high accuracy of 95%. The positive predictive value was 95%. The parathyroid gland have specific auto-fluorescence spectrum and can be separated from the other three samples through the Fisher's linear discriminant analysis. CONCLUSIONS: NIR auto-fluorescence spectroscopy can accurately identify normal parathyroid gland during thyroidectomy. The Fisher's linear discriminant analysis demonstrated the specificity of the NIR auto-fluorescence of parathyroid tissue and its efficacy in parathyroid discrimination.


Assuntos
Glândulas Paratireoides/diagnóstico por imagem , Espectrometria de Fluorescência/métodos , Espectroscopia de Luz Próxima ao Infravermelho/métodos , Cirurgia Assistida por Computador/métodos , Glândula Tireoide/cirurgia , Neoplasias da Glândula Tireoide/cirurgia , Tireoidectomia/métodos , Adulto , Idoso , Análise Discriminante , Feminino , Humanos , Período Intraoperatório , Masculino , Pessoa de Meia-Idade , Curva ROC , Neoplasias da Glândula Tireoide/diagnóstico
12.
Nanotechnology ; 28(1): 015601, 2017 Jan 06.
Artigo em Inglês | MEDLINE | ID: mdl-27900951

RESUMO

Hexagonal-phase NaGdF4: Yb, Er upconversion nanocrystals (UCNCs) with tunable morphology and properties were successfully prepared via a thermal decomposition method. The influences of the adding sequence of the precursors on the morphology, chemical composition, luminescence and magnetic properties were investigated by transmission electron microscopy (TEM), inductively coupled plasma-atomic emission spectrometry (ICP-AES), upconversion (UC) spectroscopy, and a vibrating sample magnetometer (VSM). It was found that the resulting nanocrystals, with different sizes ranging from 24 to 224 nm, are in the shape of spheres,  hexagonal plates and flakes; moreover, the composition percentage of Yb3+-Er3+ and Gd3+ ions was found to vary in a regular pattern with the adding sequence. Furthermore, the intensity ratios of emission colors (f g/r, f g/p), and the magnetic mass susceptibility of hexagonal-phase NaGdF4: Yb, Er nanocrystals change along with the composition of the nanocrystals. A positive correlation between the susceptibility and f g/r of NaGdF4: Yb, Er was proposed. The decomposition processes of the precursors were investigated by a thermogravimetric (TG) analyzer. The result indicated that the decomposition of the resolved lanthanide trifluoroacetate is greatly different from lanthanide trifluoroacetate powder. It is of tremendous help to recognize the decomposition process of the precursors and to understand the related reaction mechanism.

15.
Tumour Biol ; 37(7): 8715-20, 2016 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-26738867

RESUMO

This study examined the association between hector battifora mesothelial antigen-1 (HBME-1) expression and papillary thyroid carcinoma (PTC). A total of 206 patients were enrolled in the current study including 96 PTC patients and 110 patients with benign thyroid nodules (BTN). Immunohistochemistry (Envision) were performed to assess the expression of HBME-1. Receiver operating characteristic curve (ROC) curves were applied to evaluate the diagnostic tumor node metastasis (TNM) value of HBME-1. Specimens from 96 patients with PTC and 110 patients with BTC were reviewed. HBME-1 was positively immunostained in PTC tissue, which was significantly higher than that in BTN tissues (77.1 vs. 5.77 %, P < 0.05). Immunohistochemistry also identified that HBME-1 expression did not show any statistically significant differences based on gender, age, tumor size, TNM stage, and lymph node metastasis (P > 0.05). Importantly, HBME-1 expression was correlated with infiltration levels and differential levels in PTC (both P < 0.05). HBME-1 was found to have high sensitivity (94.5 %) and specificity (77.08 %) for PTC diagnosis. Moreover, HBME-1 had a high specificity (83.33 %) at identifying the differential levels of PTC, but a low sensitivity (22.92 %). The sensitivity and specificity of HBME-1 identifying the infiltration levels of PTC were, respectively, 72.70 and 72.00 %. HBME-1 was highly expressed in PTC tissues, and HBME-1 can serve as a potential biomarker in the diagnosis of PTC.


Assuntos
Biomarcadores Tumorais/metabolismo , Carcinoma/diagnóstico , Carcinoma/metabolismo , Neoplasias da Glândula Tireoide/diagnóstico , Neoplasias da Glândula Tireoide/metabolismo , Adolescente , Adulto , Carcinoma/patologia , Carcinoma Papilar , Feminino , Humanos , Imuno-Histoquímica/métodos , Metástase Linfática/diagnóstico , Metástase Linfática/patologia , Masculino , Pessoa de Meia-Idade , Curva ROC , Sensibilidade e Especificidade , Câncer Papilífero da Tireoide , Neoplasias da Glândula Tireoide/patologia , Nódulo da Glândula Tireoide/diagnóstico , Nódulo da Glândula Tireoide/metabolismo , Nódulo da Glândula Tireoide/patologia , Adulto Jovem
16.
Artigo em Inglês | MEDLINE | ID: mdl-27553735

RESUMO

Amyloid-ßdegrading enzyme neprilysin (NEP) plays a pivotal role in eliminating Aß The oxidized modification of NEP by 4-hydroxy-2-nonenal (HNE) may reduce the clearance of Aß in cultured cells and Alzheimer's disease (AD) brains. The aim of this research is to study whether HNE could modify the NEP protein and identify the specific sites of HNE-NEP modification using a linear trap quadrapole (LTQ) Velos Pro-Orbitrap Elite mass spectrometer. NEP activity was determined after SH-SY5Y cells had incubated with HNE (20 µM) for 24 hours. To identify the sites of NEP modification, samples of both native and HNE-modified NEP digested by trypsin were analyzed using a LTQ Velos Pro-Orbitrap Elite mass spectrometer. The NEP peptide sequence information from the fragment ion masses was used to search for the sites of NEP adduction. HNE-treated cells showed a 60% loss of NEP activity. NEP was covalently adducted at Lys 93, Lys 472 by HNE via Michael addition. Compared to the control group, the sites of modified peptide in NEP showed a consistent 156 Da increased in m/z, which provides sequence information and might contribute to further studies on drug design and the therapeutics of AD.


Assuntos
Aldeídos/análise , Aldeídos/química , Neprilisina/análise , Neprilisina/química , Mapeamento de Interação de Proteínas/métodos , Espectrometria de Massas por Ionização por Electrospray/instrumentação , Sítios de Ligação , Ativação Enzimática , Desenho de Equipamento , Análise de Falha de Equipamento , Ligação Proteica , Reprodutibilidade dos Testes , Sensibilidade e Especificidade
18.
Zhongguo Zhong Xi Yi Jie He Za Zhi ; 35(6): 699-703, 2015 Jun.
Artigo em Zh | MEDLINE | ID: mdl-26242123

RESUMO

OBJECTIVE: To study the radiosensitizing effect of resveratrol on hypopharyngeal carcinoma cell line FADU in vitro. METHODS: Hypopharyngeal carcinoma cell line FADU was cultured in in vitro DMEM. Its inhibition on cell proliferation was detected using cytotoxicity test (MTT assay). The cell survival curve was drawn using clone formation to obtain sensitive enhancement ratio (SER). Changes of the cell cycle and cell apoptosis were analyzed using flow cytometry (FCM). RESULTS: Results of MTT showed the inhibition of resveratrol on FADU cells increased along with its concentrations (P < 0.05). Results of clone formation indicated the surviving fraction at 2 Gy (SF2) was 0.717 ± 0.062 in the irradiation group, and 0.426 ± 0.035 in the resveratrol plus irradiation group (with SER ranged 1.684 ± 0.178) with statistical difference (P = 0.007). Results of FCM showed that after radiation of 4 Gy radiation, cells at G2/M phase arrest increased, but cells at G1 decreased. After radiation of resveratrol for 24 h, cells at G1 decreased, but cells at G2/M phase and S phase arrest increased. When 4 Gy radiation combined resveratrol was used, cells at G2/M phase arrest significantly increased, but cells at G1 significantly decreased. The apoptosis rate was 1.94% ± 1.65% in the control group, 4.56% ± 0.92% in the irradiation group, 2.03% ± 1.46% in the resveratrol group, and 23.11% ± 7.22% in the resveratrol plus irradiation group. There was statistical difference between the resveratrol plus irradiation group and the rest 3 groups (P < 0.05). CONCLUSION: Resveratrol could enhance the radiosensitivity of hypopharyngeal carcinoma FADU cells in vitro possibly by inducing cell apoptosis and causing changes in the cell cycle distribution.


Assuntos
Ciclo Celular/efeitos dos fármacos , Radiossensibilizantes/uso terapêutico , Estilbenos/uso terapêutico , Apoptose , Carcinoma de Células Escamosas , Linhagem Celular Tumoral , Proliferação de Células , Sobrevivência Celular , Neoplasias de Cabeça e Pescoço , Humanos , Neoplasias Hipofaríngeas/tratamento farmacológico , Tolerância a Radiação , Resveratrol , Carcinoma de Células Escamosas de Cabeça e Pescoço
19.
Ann Med Surg (Lond) ; 86(5): 2963-2975, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38694314

RESUMO

Background: Bone ring (BR) grafts have been introduced to reconstruct alveolar ridge defects with simultaneous implant placement, but their clinical effectiveness remains undetermined. The aim of the current systematic review was to critically appraise evidence from animal studies regarding the effectiveness of BR grafts in alveolar ridge reconstruction and their variations under different surgical protocols. Methods: Electronic retrieval of six databases (MEDLINE, Embase, Cochrane Library, ScienceDirect, Web of Science, and Scopus) and citation search until 11 October 2023, for animal studies on bone augmentation employing BR grafts. The outcome variables were total bone area (BA), bone volume (BV), bone-implant contact (BIC), and histology. The protocol was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines and prospectively registered with PROSPERO (CRD42023453949). Results: Ten studies were included in the qualitative analysis according to the screening criteria. Two studies demonstrated favorable bone remodeling and osseointegration of the BR with both the implant and pristine bone. A comparative study between autogenous BRs and allogenic BRs reported a higher percentage of BA and BIC at 4 months of healing, but conflicting data were observed at 8 months. Another study indicated a significant advantage of autogenous BRs over bovine and biphasic ceramic BRs in terms of BA and BIC after 5 weeks. Three studies found that using collagen membranes did not significantly affect BA, BV, or BIC when used simultaneously with autogenous BRs during implant placement. Two studies evaluated one-stage and two-stage implant placement in conjunction with BR grafts, revealing similar levels of BA, BV, and BIC except for differences in total treatment time. Furthermore, one study found that the use of mucogingival junction incision and split-thickness flap significantly reduced the incidence of wound dehiscence compared with conventional incision and flap. Conclusions: Vertical bone augmentation surgery utilizing BR grafts with one-stage implant placement yielded histological and histomorphometric outcomes comparable to those achieved with two-stage implant placement or the additional application of collagen membrane.

20.
Abdom Radiol (NY) ; 49(3): 908-918, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-37957372

RESUMO

PURPOSE: Data on medium- and long-term efficacy and safety of Transjugular intrahepatic portosystemic shunt (TIPS) using Viatorr stents in Chinese patients are limited. This study aimed to evaluate the 5-year mortality and the incidence of overt hepatic encephalopathy (OHE) after Viatorr stent insertion, and construct a model to predict post-TIPS OHE preoperatively. METHODS: One hundred thirty-two patients undergoing Viatorr stent insertion in our institution between August 2016 and December 2019 were included, and randomly divided into training and validation cohort at a 70/30 ratio. Patients were followed up until death or the end date of follow-up (December 31st, 2021). The primary end point was all-cause mortality, and the secondary end points were OHE, variceal rebleeding, recurrent ascites and shunt dysfunction. RESULTS: The 1-, 2-, 3-, 4- and 5-year cumulative survival rates were 92.4%, 87.9%, 85.3%, 80.2% and 80.2%, respectively. Post-TIPS OHE and Child-Pugh grade were independent prognostic factors. The rates of variceal rebleeding, recurrent ascites, shunt dysfunction and post-TIPS OHE were 9.1%, 14.3%, 5.3% and 28.0%, respectively. The variables of nomogram predicting post-TIPS OHE included age, diabetes and ascites grade. The area under time-dependent receiver operation characteristic (ROC) curve (AUC) in training and validation cohort were 0.806 and 0.751, respectively. The decision curve analysis (DCA) showed good net benefit both in training and validation cohort. CONCLUSION: Post-TIPS OHE and Child-Pugh grade are independent prognostic factors for early mortality in cirrhosis patients, thus we construct a simple and convenient prediction model for post-TIPS OHE to identify high-risk patients preoperatively.


Assuntos
Encefalopatia Hepática , Derivação Portossistêmica Transjugular Intra-Hepática , Humanos , Encefalopatia Hepática/epidemiologia , Encefalopatia Hepática/etiologia , Estudos Retrospectivos , Ascite/complicações , Recidiva Local de Neoplasia , Cirrose Hepática/complicações , Cirrose Hepática/cirurgia , Resultado do Tratamento
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