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1.
Cell ; 165(2): 488-96, 2016 Apr 07.
Artigo em Inglês | MEDLINE | ID: mdl-26997482

RESUMO

RNA-programmed genome editing using CRISPR/Cas9 from Streptococcus pyogenes has enabled rapid and accessible alteration of specific genomic loci in many organisms. A flexible means to target RNA would allow alteration and imaging of endogenous RNA transcripts analogous to CRISPR/Cas-based genomic tools, but most RNA targeting methods rely on incorporation of exogenous tags. Here, we demonstrate that nuclease-inactive S. pyogenes CRISPR/Cas9 can bind RNA in a nucleic-acid-programmed manner and allow endogenous RNA tracking in living cells. We show that nuclear-localized RNA-targeting Cas9 (RCas9) is exported to the cytoplasm only in the presence of sgRNAs targeting mRNA and observe accumulation of ACTB, CCNA2, and TFRC mRNAs in RNA granules that correlate with fluorescence in situ hybridization. We also demonstrate time-resolved measurements of ACTB mRNA trafficking to stress granules. Our results establish RCas9 as a means to track RNA in living cells in a programmable manner without genetically encoded tags.


Assuntos
RNA/análise , Sistemas CRISPR-Cas , Grânulos Citoplasmáticos/química , Endonucleases/metabolismo , Gliceraldeído-3-Fosfato Desidrogenases/genética , Proteínas de Fluorescência Verde/análise , Humanos , RNA Guia de Cinetoplastídeos/análise , RNA Mensageiro/análise
2.
Dev Biol ; 508: 123-137, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38290645

RESUMO

microRNAs are evolutionarily conserved non-coding RNAs that direct post-transcriptional regulation of target transcripts. In vertebrates, microRNA-1 (miR-1) is expressed in muscle and has been found to play critical regulatory roles in vertebrate angiogenesis, a process that has been proposed to be analogous to sea urchin skeletogenesis. Results indicate that both miR-1 inhibitor and miR-1 mimic-injected larvae have significantly less F-actin enriched circumpharyngeal muscle fibers and fewer gut contractions. In addition, miR-1 regulates the positioning of skeletogenic primary mesenchyme cells (PMCs) and skeletogenesis of the sea urchin embryo. Interestingly, the gain-of-function of miR-1 leads to more severe PMC patterning and skeletal branching defects than its loss-of-function. The results suggest that miR-1 directly suppresses Ets1/2, Tbr, and VegfR7 of the skeletogenic gene regulatory network, and Nodal, and Wnt1 signaling components. This study identifies potential targets of miR-1 that impacts skeletogenesis and muscle formation and contributes to a deeper understanding of miR-1's function during development.


Assuntos
MicroRNAs , Animais , MicroRNAs/genética , MicroRNAs/metabolismo , Embrião não Mamífero/metabolismo , Ouriços-do-Mar/genética , Ouriços-do-Mar/metabolismo , Transdução de Sinais/genética , Redes Reguladoras de Genes , Regulação da Expressão Gênica no Desenvolvimento/genética , Mesoderma/metabolismo
3.
J Cell Sci ; 136(5)2023 03 01.
Artigo em Inglês | MEDLINE | ID: mdl-36751992

RESUMO

Mitosis is a fundamental and highly regulated process that acts to faithfully segregate chromosomes into two identical daughter cells. Localization of gene transcripts involved in mitosis to the mitotic spindle might be an evolutionarily conserved mechanism to ensure that mitosis occurs in a timely manner. We identified many RNA transcripts that encode proteins involved in mitosis localized at the mitotic spindles in dividing sea urchin embryos and mammalian cells. Disruption of microtubule polymerization, kinesin-1 or dynein results in lack of spindle localization of these transcripts in the sea urchin embryo. Furthermore, results indicate that the cytoplasmic polyadenylation element (CPE) within the 3'UTR of the Aurora B transcript, a recognition sequence for CPEB, is essential for RNA localization to the mitotic spindle in the sea urchin embryo. Blocking this sequence results in arrested development during early cleavage stages, suggesting that RNA localization to the mitotic spindle might be a regulatory mechanism of cell division that is important for early development.


Assuntos
Dineínas , Cinesinas , Animais , Cinesinas/metabolismo , Dineínas/metabolismo , Fuso Acromático/metabolismo , Mitose , RNA/metabolismo , Microtúbulos/metabolismo , Mamíferos/metabolismo
4.
Mol Cell ; 67(1): 148-161.e5, 2017 Jul 06.
Artigo em Inglês | MEDLINE | ID: mdl-28673540

RESUMO

Alternative splicing (AS) generates isoform diversity for cellular identity and homeostasis in multicellular life. Although AS variation has been observed among single cells, little is known about the biological or evolutionary significance of such variation. We developed Expedition, a computational framework consisting of outrigger, a de novo splice graph transversal algorithm to detect AS; anchor, a Bayesian approach to assign modalities; and bonvoyage, a visualization tool using non-negative matrix factorization to display modality changes. Applying Expedition to single pluripotent stem cells undergoing neuronal differentiation, we discover that up to 20% of AS exons exhibit bimodality. Bimodal exons are flanked by more conserved intronic sequences harboring distinct cis-regulatory motifs, constitute much of cell-type-specific splicing, are highly dynamic during cellular transitions, preserve reading frame, and reveal intricacy of cell states invisible to conventional gene expression analysis. Systematic AS characterization in single cells redefines our understanding of AS complexity in cell biology.


Assuntos
Processamento Alternativo , Proteínas do Tecido Nervoso/biossíntese , Células-Tronco Neurais/metabolismo , Neurogênese , Neurônios/metabolismo , Células-Tronco Pluripotentes/metabolismo , RNA Mensageiro/metabolismo , Análise de Célula Única , Algoritmos , Teorema de Bayes , Linhagem Celular , Simulação por Computador , Evolução Molecular , Regulação da Expressão Gênica no Desenvolvimento , Humanos , Cinética , Masculino , Modelos Genéticos , Proteínas do Tecido Nervoso/genética , Fenótipo , RNA Mensageiro/genética
5.
Pharmacol Rev ; 74(3): 462-505, 2022 07.
Artigo em Inglês | MEDLINE | ID: mdl-35710133

RESUMO

The concept of local formation of angiotensin II in the kidney has changed over the last 10-15 years. Local synthesis of angiotensinogen in the proximal tubule has been proposed, combined with prorenin synthesis in the collecting duct. Binding of prorenin via the so-called (pro)renin receptor has been introduced, as well as megalin-mediated uptake of filtered plasma-derived renin-angiotensin system (RAS) components. Moreover, angiotensin metabolites other than angiotensin II [notably angiotensin-(1-7)] exist, and angiotensins exert their effects via three different receptors, of which angiotensin II type 2 and Mas receptors are considered renoprotective, possibly in a sex-specific manner, whereas angiotensin II type 1 (AT1) receptors are believed to be deleterious. Additionally, internalized angiotensin II may stimulate intracellular receptors. Angiotensin-converting enzyme 2 (ACE2) not only generates angiotensin-(1-7) but also acts as coronavirus receptor. Multiple, if not all, cardiovascular diseases involve the kidney RAS, with renal AT1 receptors often being claimed to exert a crucial role. Urinary RAS component levels, depending on filtration, reabsorption, and local release, are believed to reflect renal RAS activity. Finally, both existing drugs (RAS inhibitors, cyclooxygenase inhibitors) and novel drugs (angiotensin receptor/neprilysin inhibitors, sodium-glucose cotransporter-2 inhibitors, soluble ACE2) affect renal angiotensin formation, thereby displaying cardiovascular efficacy. Particular in the case of the latter three, an important question is to what degree they induce renoprotection (e.g., in a renal RAS-dependent manner). This review provides a unifying view, explaining not only how kidney angiotensin formation occurs and how it is affected by drugs but also why drugs are renoprotective when altering the renal RAS. SIGNIFICANCE STATEMENT: Angiotensin formation in the kidney is widely accepted but little understood, and multiple, often contrasting concepts have been put forward over the last two decades. This paper offers a unifying view, simultaneously explaining how existing and novel drugs exert renoprotection by interfering with kidney angiotensin formation.


Assuntos
Angiotensinogênio , Doenças Cardiovasculares , Feminino , Humanos , Masculino , Angiotensina II/metabolismo , Enzima de Conversão de Angiotensina 2 , Angiotensinogênio/metabolismo , Doenças Cardiovasculares/metabolismo , Sistemas de Liberação de Medicamentos , Rim/irrigação sanguínea , Rim/metabolismo , Renina/metabolismo , Sistema Renina-Angiotensina , Inibidores do Transportador 2 de Sódio-Glicose/metabolismo
6.
Dev Biol ; 502: 50-62, 2023 10.
Artigo em Inglês | MEDLINE | ID: mdl-37419400

RESUMO

MicroRNAs regulate gene expression post-transcriptionally by destabilizing and/or inhibiting translation of target mRNAs in animal cells. MicroRNA-124 (miR-124) has been examined mostly in the context of neurogenesis. This study discovers a novel role of miR-124 in regulating mesodermal cell differentiation in the sea urchin embryo. The expression of miR-124 is first detectable at 12hours post fertilization at the early blastula stage, during endomesodermal specification. Mesodermally-derived immune cells come from the same progenitor cells that give rise to blastocoelar cells (BCs) and pigment cells (PCs) that must make a binary fate decision. We determined that miR-124 directly represses Nodal and Notch to regulate BC and PC differentiation. miR-124 inhibition does not impact the dorsal-ventral axis formation, but result in a significant increase in number of cells expressing BC-specific transcription factors (TFs) and a concurrent reduction of differentiated PCs. In general, removing miR-124's suppression of Nodal phenocopies miR124 inhibition. Interestingly, removing miR-124's suppression of Notch leads to an increased number of both BCs and PCs, with a subset of hybrid cells that express both BC- and PC-specific TFs in the larvae. Removal of miR-124's suppression of Notch not only affects differentiation of both BCs and PCs, but also induces cell proliferation of these cells during the first wave of Notch signaling. This study demonstrates that post-transcriptional regulation by miR-124 impacts differentiation of BCs and PCs by regulating the Nodal and Notch signaling pathways.


Assuntos
MicroRNAs , Receptores Notch , Animais , Receptores Notch/genética , Receptores Notch/metabolismo , MicroRNAs/genética , MicroRNAs/metabolismo , Diferenciação Celular/genética , Transdução de Sinais/genética , Regulação da Expressão Gênica , Fator de Crescimento Transformador beta/metabolismo
7.
Mol Cell ; 63(3): 514-25, 2016 08 04.
Artigo em Inglês | MEDLINE | ID: mdl-27453043

RESUMO

An emerging therapeutic strategy for cancer is to induce selective lethality in a tumor by exploiting interactions between its driving mutations and specific drug targets. Here we use a multi-species approach to develop a resource of synthetic lethal interactions relevant to cancer therapy. First, we screen in yeast ∼169,000 potential interactions among orthologs of human tumor suppressor genes (TSG) and genes encoding drug targets across multiple genotoxic environments. Guided by the strongest signal, we evaluate thousands of TSG-drug combinations in HeLa cells, resulting in networks of conserved synthetic lethal interactions. Analysis of these networks reveals that interaction stability across environments and shared gene function increase the likelihood of observing an interaction in human cancer cells. Using these rules, we prioritize ∼10(5) human TSG-drug combinations for future follow-up. We validate interactions based on cell and/or patient survival, including topoisomerases with RAD17 and checkpoint kinases with BLM.


Assuntos
Antineoplásicos/uso terapêutico , Biomarcadores Tumorais/genética , Redes Reguladoras de Genes/efeitos dos fármacos , Genes Supressores de Tumor , Mutação , Medicina de Precisão/métodos , Mapas de Interação de Proteínas/efeitos dos fármacos , Saccharomyces cerevisiae/efeitos dos fármacos , Neoplasias do Colo do Útero/tratamento farmacológico , Proteínas de Ciclo Celular/genética , Proteínas de Ciclo Celular/metabolismo , Proliferação de Células/efeitos dos fármacos , Sobrevivência Celular/efeitos dos fármacos , Relação Dose-Resposta a Droga , Feminino , Regulação Fúngica da Expressão Gênica/efeitos dos fármacos , Regulação Neoplásica da Expressão Gênica/efeitos dos fármacos , Predisposição Genética para Doença , Células HeLa , Humanos , Estimativa de Kaplan-Meier , Terapia de Alvo Molecular , Fenótipo , Interferência de RNA , RecQ Helicases/genética , RecQ Helicases/metabolismo , Saccharomyces cerevisiae/genética , Saccharomyces cerevisiae/metabolismo , Proteínas de Saccharomyces cerevisiae/genética , Proteínas de Saccharomyces cerevisiae/metabolismo , Transdução de Sinais/efeitos dos fármacos , Mutações Sintéticas Letais , Fatores de Tempo , Transfecção , Neoplasias do Colo do Útero/genética , Neoplasias do Colo do Útero/metabolismo , Neoplasias do Colo do Útero/mortalidade
8.
Zhonghua Yu Fang Yi Xue Za Zhi ; 58(6): 917-923, 2024 Jun 06.
Artigo em Zh | MEDLINE | ID: mdl-38955742

RESUMO

Persistent Organic Pollutants (POPs) have the characteristics of resistance to environmental degradation, bioaccumulation and long-distance migration potential. Maternal exposure to POPs during pregnancy can enter the fetal blood circulation through the placental barrier, and have a potential impact on the functional development of the nervous system of the offspring. This in turn leads to the occurrence and development of neurological defects and diseases in adulthood. The purpose of this paper is to elucidate the effects of exposure to three major POPs (organochlorine compounds, perfluoroalkyl and polyfluoroalkyl substances, and polybrominated diphenyl ethers) during pregnancy on the functional development of the nervous system (social emotions, cognition, language, exercise, and adaptability) in children, and to provide reference for subsequent studies.


Assuntos
Sistema Nervoso , Poluentes Orgânicos Persistentes , Efeitos Tardios da Exposição Pré-Natal , Gravidez , Humanos , Feminino , Criança , Sistema Nervoso/efeitos dos fármacos , Sistema Nervoso/crescimento & desenvolvimento , Exposição Materna/efeitos adversos , Éteres Difenil Halogenados/toxicidade , Hidrocarbonetos Clorados , Desenvolvimento Infantil/efeitos dos fármacos , Poluentes Ambientais/toxicidade
9.
Zhonghua Jie He He Hu Xi Za Zhi ; 47(7): 632-637, 2024 Jul 12.
Artigo em Zh | MEDLINE | ID: mdl-38955748

RESUMO

Objective: To evaluate the safety of umeclidinium/vilanterol in Chinese participants in a real-world setting. Methods: This was a 24-week, prospective, multicenter, single-arm, observational study that enrolled participants treated with umeclidinium/vilanterol in real-world settings from 14 sites in China from 14 December 2020 to 30 January 2022. The primary outcomes were the incidence of adverse events (AEs) and serious adverse events (SAEs) at week 24. Results: A total of 887 participants on umeclidinium/vilanterol were enrolled. The mean (±SD) age of these participants was 67.5 (±9.6) years, with more men (77.7%) enrolled. The majority of the participants (98.1%) had been diagnosed with chronic obstructive pulmonary disease, and 67.6% of them reported comorbidities. More than half of the participants (52.8%) were taking concomitant medication in addition to the study treatment. AEs were reported in 59 (6.7%) participants and were predominantly mild to moderate in severity. SAEs were reported in 21 (2.4%) participants, including 9 fatal SAEs, 10 reported non-fatal SAEs, and 2 reported both non-fatal and fatal SAEs. None of the SAEs, including the fatal events, were considered by the investigators to be related to umeclidinium/vilanterol. Adverse drug reactions (ADRs) were reported in 6 (0.7%) participants with 4 preferred terms (PTs), all of which were considered mild in severity. Of these PTs, 2 were known ADRs of umeclidinium/vilanterol. Three participants (0.3%) reported AEs that were part of serious identified/potential hazards, all of which were considered by the investigators to be unrelated to umeclidinium/vilanterol. Conclusion: The results of this study showed that umeclidinium/vilanterol was well tolerated in Chinese participants in a real-world setting and no new drug-related safety signals were observed.


Assuntos
Álcoois Benzílicos , Clorobenzenos , Quinuclidinas , Humanos , Álcoois Benzílicos/administração & dosagem , Álcoois Benzílicos/efeitos adversos , Estudos Prospectivos , Clorobenzenos/efeitos adversos , Clorobenzenos/administração & dosagem , Quinuclidinas/efeitos adversos , Quinuclidinas/administração & dosagem , Idoso , Masculino , Feminino , China , Doença Pulmonar Obstrutiva Crônica/tratamento farmacológico , Pessoa de Meia-Idade , Povo Asiático , População do Leste Asiático
10.
Artigo em Zh | MEDLINE | ID: mdl-38311956

RESUMO

The risk management in workplace is an important measure to effectively prevent and control the harm of hand-transmitted vibration. Based on the relevant developments at home and abroad, this paper expounds the risk of manual vibration operation in workplace by taking contact assessment and hazard assessment as an example. On this basis, the limit management and hierarchical management related to risk management are discussed, and the existing problems are analyzed.


Assuntos
Exposição Ocupacional , Vibração , Vibração/efeitos adversos , Mãos , Local de Trabalho , Gestão de Riscos
11.
Nature ; 552(7683): 110-115, 2017 12 07.
Artigo em Inglês | MEDLINE | ID: mdl-29160304

RESUMO

Fibrosis is a common pathology in cardiovascular disease. In the heart, fibrosis causes mechanical and electrical dysfunction and in the kidney, it predicts the onset of renal failure. Transforming growth factor ß1 (TGFß1) is the principal pro-fibrotic factor, but its inhibition is associated with side effects due to its pleiotropic roles. We hypothesized that downstream effectors of TGFß1 in fibroblasts could be attractive therapeutic targets and lack upstream toxicity. Here we show, using integrated imaging-genomics analyses of primary human fibroblasts, that upregulation of interleukin-11 (IL-11) is the dominant transcriptional response to TGFß1 exposure and required for its pro-fibrotic effect. IL-11 and its receptor (IL11RA) are expressed specifically in fibroblasts, in which they drive non-canonical, ERK-dependent autocrine signalling that is required for fibrogenic protein synthesis. In mice, fibroblast-specific Il11 transgene expression or Il-11 injection causes heart and kidney fibrosis and organ failure, whereas genetic deletion of Il11ra1 protects against disease. Therefore, inhibition of IL-11 prevents fibroblast activation across organs and species in response to a range of important pro-fibrotic stimuli. These results reveal a central role of IL-11 in fibrosis and we propose that inhibition of IL-11 is a potential therapeutic strategy to treat fibrotic diseases.


Assuntos
Sistema Cardiovascular/metabolismo , Sistema Cardiovascular/patologia , Fibrose/metabolismo , Fibrose/patologia , Interleucina-11/metabolismo , Animais , Comunicação Autócrina , Células Cultivadas , Feminino , Fibroblastos/efeitos dos fármacos , Fibroblastos/metabolismo , Fibroblastos/patologia , Fibrose/induzido quimicamente , Coração , Humanos , Interleucina-11/antagonistas & inibidores , Interleucina-11/genética , Subunidade alfa de Receptor de Interleucina-11/deficiência , Subunidade alfa de Receptor de Interleucina-11/genética , Rim/patologia , Masculino , Camundongos , Camundongos Knockout , Pessoa de Meia-Idade , Miocárdio/metabolismo , Miocárdio/patologia , Escores de Disfunção Orgânica , Biossíntese de Proteínas , Fator de Crescimento Transformador beta1/metabolismo , Fator de Crescimento Transformador beta1/farmacologia , Transgenes/genética
12.
Int J Mol Sci ; 24(8)2023 Apr 18.
Artigo em Inglês | MEDLINE | ID: mdl-37108577

RESUMO

It has been our pleasure to have been able to develop two special issues within the International Journal of Molecular Sciences: (1) Renin-Angiotensin-Aldosterone System in Pathologies and (2) Renin-Angiotensin-Aldosterone System in Metabolism & Disease [...].


Assuntos
Doenças Metabólicas , Sistema Renina-Angiotensina , Humanos , Aldosterona , Renina/metabolismo , Angiotensina II/metabolismo
13.
Zhonghua Nei Ke Za Zhi ; 62(10): 1194-1199, 2023 Oct 01.
Artigo em Zh | MEDLINE | ID: mdl-37766438

RESUMO

Objective: To investigate the predictive value of plasma exosomal microRNA (miR)-124-3p in the risk of chronic cerebral hypoperfusion (CCH). Methods: A case-control study. Thirty patients who were diagnosed with CCH (CCH group) based on cranial artery spin labeling (ASL) in the neurology outpatient clinic of Sichuan Provincial People's Hospital from March 2022 to June 2022 and 30 healthy volunteers (control group) were included. Age, gender, smoking history, alcohol consumption history, diabetes history, hypertension, hyperlipidemia history, uric acid, fasting blood glucose, homocysteine and plasma exosomal miR-124-3p expression level were compared between the two groups. Comparisons of categorical variables were analyzed by either χ2 test or Fisher's exact test. If the data of continuous variables followed a normal distribution, they were expressed as mean±standard deviation (SD) and compared by t-test for two independent samples; otherwise, the data were expressed as M(Q1, Q3), and analyzed by Mann-Whitney U test for comparison between two groups. The correlation between cerebral blood flow and exosomal miR-124-3p levels was analyzed by Pearson's correlation. Binary multifactorial logistic regression analysis was used to determine the risk factors associated with CCH, and corresponding odds ratios (OR) and 95% confidence intervals (CI) were calculated. P<0.05 was considered significant. Results: There was no significant difference in age (64±8 vs. 60±8 years old), gender (33.3% vs. 30.0%), history of smoking (20.0% vs. 3.3%), alcohol consumption (20.0% vs. 6.7%), diabetes mellitus (13.3% vs. 13.3%), hypertension (53.3% vs. 30.0%), history of hyperlipidemia (46.7% vs. 36.7%), uric acid (288±60 vs.319±67 µmol/L), and fasting glucose [4.99(4.63, 5.91) vs. 5.28(5.09, 6.05) mmol/L] and homocysteine [11.35(10.18, 13.08) vs.11.00(9.78, 13.03) µmol/L] between the CCH and control groups (P>0.05). Plasma exosomal miR-124-3p expression was significantly higher in the CCH group than in the control group [13.08 (8.59, 21.55) vs. 2.85 (1.44, 5.10), respectively; U=169.50, P<0.001]. Pearson's correlation test showed that the level of exosomal miR-124-3p was negatively correlated with cerebral blood flow in the hypoperfused region in patients with CCH (r=-0.932, P<0.001). Multi-factor logistic regression analysis showed that plasma exosomal miR-124-3p was independently associated with the risk of CCH (OR=1.169,95%CI 1.063-1.286,P=0.001). Conclusions: The expression of plasma exosomal miR-124-3p is negatively correlated with cerebral blood flow in areas of low perfusion and is an independent risk factor for CCH. Plasma exosomal miR-124-3p may thus serve as a valid biomarker for CCH risk prediction.


Assuntos
Isquemia Encefálica , Hiperlipidemias , Hipertensão , MicroRNAs , Humanos , Pessoa de Meia-Idade , Idoso , Estudos de Casos e Controles , Ácido Úrico , MicroRNAs/genética , Homocisteína
14.
Zhonghua Nei Ke Za Zhi ; 62(12): 1430-1435, 2023 Dec 01.
Artigo em Zh | MEDLINE | ID: mdl-38044069

RESUMO

Objective: To investigate the association between remnant cholesterol (RC) and the risk of diabetic retinopathy (DR) in middle-aged and older individuals with diabetes. Methods: Based on the Shanghai Nicheng Cohort Study database, the data of 1 255 individuals with diabetes aged 55-70 years at baseline (2013-2014) with complete fundus photographs and serum cholesterol data in Nicheng, Shanghai, were analyzed. Multinomial logistic regression models were used to evaluate risk ratios (RRs) and their 95% confidence intervals (CIs) between baseline RC level and incident DR. Results: The median age of the subjects was 61.9 years, and 60.4% were women. After a 4.6-year follow-up, 79 (6.3%) patients developed DR, including 50 (4.0%) mild non-proliferative DR and 29 (2.3%) referable DR (RDR). Multivariable logistic regression showed that each mmol/L increase of RC was associated with a 40% higher risk of RDR (RR=1.40, 95%CI 1.03-1.90). Compared with the lowest tertile of RC (<0.63 mmol/L), the risk of RDR in the highest tertile (≥0.85 mmol/L) increased by 4.59 times (RR=5.59, 95%CI 1.51-20.73). Conclusion: The RC level may help identify individuals at high risk of incident RDR in middle-aged and older Chinese adults with diabetes.


Assuntos
Diabetes Mellitus Tipo 2 , Retinopatia Diabética , Adulto , Pessoa de Meia-Idade , Humanos , Feminino , Idoso , Masculino , Retinopatia Diabética/epidemiologia , Retinopatia Diabética/complicações , Diabetes Mellitus Tipo 2/epidemiologia , Diabetes Mellitus Tipo 2/complicações , Estudos de Coortes , China/epidemiologia , Colesterol , Fatores de Risco
15.
Zhonghua Bing Li Xue Za Zhi ; 52(5): 447-453, 2023 May 08.
Artigo em Zh | MEDLINE | ID: mdl-37106285

RESUMO

Objective: To investigate the clinicopathological features and immunohistochemical phenotypes of gastric SMARCA4-deficient undifferentiated carcinoma, and to discuss the daily diagnostics of this entity and analyze its prognosis. Methods: The cases of gastric SMARCA4-deficient undifferentiated carcinoma diagnosed at the Department of Pathology, Peking University Cancer Hospital, China from January 2010 to August 2022 were collected. The histological sections were reviewed, the immunohistochemical results and clinicopathological features were analyzed, and relevant literature was reviewed. Results: Pure foci of undifferentiated carcinoma were seen in 7 cases, and 1 case was accompanied by a moderately differentiated tubular adenocarcinoma component. Undifferentiated carcinoma foci showed similar sheet-like or solid diffuse growth pattern, medium-sized tumor cells characterized by 1-2 nucleoli, and abundant cytoplasm and rhabdoid appearance. The average patient age was 65±8 years. Six patients were male and 2 were female. Immunohistochemical staining showed that undifferentiated carcinoma of all 8 tumors were negative for SMARCA4 (BRG1). Among 7 patients who underwent SMARCA2 (BRM) and SMARCB1 (INI1) staining, 4 cases showed loss of BRM expression, 2 cases showed weakly positive staining, and 1 case was diffusely positive, but all 7 cases were diffusely strong positive for INI1. The neuroendocrine marker, synaptophysin, was weakly positive in 5 cases, while CgA and CD56 were negative in 8 cases. Ki-67 index was more than 70%. Two cases were mismatch repair deficient and showed the loss of MLH1/PMS2 expression, while 1 case showed only MSH2 loss. PD-L1 staining showed that combined positive score (CPS)≥1 in 4 cases (CPS ranging from 1 to 55) and CPS<1 in the other 3 cases. Four patients had clinical stage Ⅳ disease. Two of them died within 3 months after diagnosis. Conclusions: Gastric SMARCA4-deficient undifferentiated carcinoma/rhabdoid carcinoma is a rare group of highly malignant tumors with a poor prognosis. Loss of the core subunit of SWI/SNF complex may be associated with the development of dedifferentiated histological pattern and aggressive tumor progression, which may be more frequently accompanied with mismatch repair deficiency.


Assuntos
Adenocarcinoma , Carcinoma , Neoplasias Colorretais , Neoplasias Gástricas , Masculino , Feminino , Humanos , Carcinoma/patologia , Diferenciação Celular , Biomarcadores Tumorais , DNA Helicases , Proteínas Nucleares , Fatores de Transcrição
16.
Zhonghua Wai Ke Za Zhi ; 61(8): 693-699, 2023 Aug 01.
Artigo em Zh | MEDLINE | ID: mdl-37400213

RESUMO

Objective: To examine the feasibility, safety, and efficacy of mobilization of the vertebral artery for C2 pedicle screws in cases with high-riding vertebral artery (HRVA). Methods: The clinical data of 12 patients with basilar invagination and atlantoaxial dislocation underwent atlantoaxial reduction and fixation in the Department of Neurosurgery, the First Affiliated Hospital of University of Science and Technology of China between January 2020 and November 2021 were retrospectively analyzed. All patients had high-riding vertebral artery on at least one side that prohibited the insertion of C2 pedicle screws. There were 2 males and 10 females aged (48.0±12.8) years (range: 17 to 67 years). After correction of vertical dislocation during the operation, the C2 pedicle screw insertion and occipitocervical fixation and fusion were performed using the vertebral artery mobilization technique. Neurological function was assessed using the Japanese Orthopedic Association (JOA) scale. The preoperative and postoperative JOA score and the main radiological measurements, including the anterior atlantodental interval (ADI), the distance of the odontoid tip above the Chamberlain line, the clivus-canal angle, were collected and compared by paired t-test. Results: Mobilization of the high-riding vertebral artery was successfully completed, and C2 pedicle screws were then fulfilled after the vertebral artery was protected. There was no injury to the vertebral artery during the operation. Meanwhile, no severe surgical complications such as cerebral infarction or aggravated neurological dysfunction occurred during the perioperative period. Satisfactory C2 pedicle screw placement and reduction were achieved in all 12 patients. All patients achieved bone fusion 6 months after surgery. No looseness and shift in internal fixation or reduction loss was observed during the follow-up period. Compared to the preoperative, the postoperative ADI decreased from (6.1±1.9) mm to (2.0±1.2) mm (t=6.73, P<0.01), the distance of the odontoid tip above the Chamberlain line decreased from (10.4±2.5) mm to (5.5±2.3) mm (t=7.12, P<0.01), the clivus-canal angle increased from (123.4±11.1) ° to (134.7±9.6) ° (t=2.50, P=0.032), the JOA score increased from 13.3±2.1 to 15.6±1.2 (t=6.99, P<0.01). Conclusion: The C2 pedicle screw insertion assisted by mobilization of the vertebral artery is safe and considerably effective, providing a choice for internal fixation in cases with high-riding vertebral arteries.

17.
Artigo em Zh | MEDLINE | ID: mdl-36882282

RESUMO

As an important part of health information standard system, occupational health information standard system is the foundation and guarantee of promoting the construction of occupational health information. This article is based on the literature research about current situation of domestic and foreign health information standards and occupational health information standard system, thus take "the National Health Information Standardization System" and "the National Public Health Information Construction Standards and Norms" into account, focus on the requirements of occupational health information construction and related work. Thus, put forward suggestions on the construction of occupational health information standard system, to accelerate the occupational health information construction, data collection, transmission and application.


Assuntos
Saúde Ocupacional , Coleta de Dados , Internacionalidade , Saúde Pública
18.
Artigo em Zh | MEDLINE | ID: mdl-37400413

RESUMO

The construction of health enterprises practice the concept of big health. It is an important solution to protect the overall health of occupational groups in the new era, which is of great significance to promoting a healthy city and helping to build a healthy China. This paper clarifies the connotation of healthy enterprises in the new era, discusses the key points of healthy enterprise construction around the "four in one" construction content, "PDCA" construction procedures, and evaluation methods of healthy enterprises. It focuses on the progress of healthy enterprise construction, analyzes the problems faced by the construction of health enterprises in China, and puts forward suggestions to improve the construction efficiency, with a view to providing ideas for further promoting the construction of health enterprises in China.

19.
Dev Biol ; 472: 98-114, 2021 04.
Artigo em Inglês | MEDLINE | ID: mdl-33484703

RESUMO

microRNAs (miRNAs) play a critical role in a variety of biological processes, including embryogenesis and the physiological functions of cells. Evolutionarily conserved microRNA-31 (miR-31) has been found to be involved in cancer, bone formation, and lymphatic development. We previously discovered that, in the sea urchin, miR-31 knockdown (KD) embryos have shortened dorsoventral connecting rods, mispatterned skeletogenic primary mesenchyme cells (PMCs) and shifted and expanded Vegf3 expression domain. Vegf3 itself does not contain miR-31 binding sites; however, we identified its upstream regulators Eve and Wnt1 to be directly suppressed by miR-31. Removal of miR-31's suppression of Eve and Wnt1 resulted in skeletal and PMC patterning defects, similar to miR-31 KD phenotypes. Additionally, removal of miR-31's suppression of Eve and Wnt1 results in an expansion and anterior shift in expression of Veg1 ectodermal genes, including Vegf3 in the blastulae. This indicates that miR-31 indirectly regulates Vegf3 expression through directly suppressing Eve and Wnt1. Furthermore, removing miR-31 suppression of Eve is sufficient to cause skeletogenic defects, revealing a novel regulatory role of Eve in skeletogenesis and PMC patterning. Overall, this study provides a proposed molecular mechanism of miR-31's regulation of skeletogenesis and PMC patterning through its cross-regulation of a Wnt signaling ligand and a transcription factor of the endodermal and ectodermal gene regulatory network.


Assuntos
Regulação da Expressão Gênica no Desenvolvimento , Proteínas de Homeodomínio/metabolismo , MicroRNAs/metabolismo , Desenvolvimento Musculoesquelético/genética , Strongylocentrotus purpuratus/embriologia , Strongylocentrotus purpuratus/genética , Proteína Wnt1/metabolismo , Animais , Animais Geneticamente Modificados , Padronização Corporal/genética , Desenvolvimento Embrionário/genética , Feminino , Técnicas de Silenciamento de Genes , Redes Reguladoras de Genes , Masculino , Células-Tronco Mesenquimais/metabolismo , MicroRNAs/genética , Fenótipo , Transdução de Sinais/genética , Strongylocentrotus purpuratus/metabolismo , Fatores de Transcrição/metabolismo
20.
Phys Rev Lett ; 129(22): 221802, 2022 Nov 23.
Artigo em Inglês | MEDLINE | ID: mdl-36493447

RESUMO

A search for exotic dark matter (DM) in the sub-GeV mass range has been conducted using 205 kg day data taken from a p-type point contact germanium detector of the CDEX-10 experiment at China's Jinping underground laboratory. New low-mass dark matter searching channels, neutral current fermionic DM absorption (χ+A→ν+A) and DM-nucleus 3→2 scattering (χ+χ+A→ϕ+A), have been analyzed with an energy threshold of 160 eVee. No significant signal was found; thus new limits on the DM-nucleon interaction cross section are set for both models at the sub-GeV DM mass region. A cross section limit for the fermionic DM absorption is set to be 2.5×10^{-46} cm^{2} (90% C.L.) at DM mass of 10 MeV/c^{2}. For the DM-nucleus 3→2 scattering scenario, limits are extended to DM mass of 5 and 14 MeV/c^{2} for the massless dark photon and bound DM final state, respectively.


Assuntos
Núcleo Celular , Fótons
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