Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 753
Filtrar
Mais filtros

Base de dados
País/Região como assunto
Tipo de documento
Intervalo de ano de publicação
1.
Ann Surg Oncol ; 31(4): 2679-2688, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38142258

RESUMO

BACKGROUND: Robotic gastrectomy (RG) has been widely used to treat gastric cancer. However, whether the short-term outcomes of robotic gastrectomy are superior to those of laparoscopic gastrectomy (LG) for elderly patients with advanced gastric cancer has not been reported. METHODS: The study enrolled of 594 elderly patients with advanced gastric cancer who underwent robotic or laparoscopic radical gastrectomy. The RG cohort was matched 1:3 with the LG cohort using propensity score-matching (PSM). RESULTS: After PSM, 121 patients were included in the robot group and 363 patients in the laparoscopic group. Excluding the docking and undocking times, the operation time of the two groups was similar (P = 0.617). The RG group had less intraoperative blood loss than the LG group (P < 0.001). The time to ambulation and first liquid food intake was significantly shorter in the RG group than in the LG group (P < 0.05). The incidence of postoperative complications did not differ significantly between the two groups (P = 0.14). Significantly more lymph nodes were dissected in the RG group than in the LG group (P = 0.001). Postoperative adjuvant chemotherapy was started earlier in the RG group than in the LG group (P = 0.02). CONCLUSIONS: For elderly patients with advanced gastric cancer, RG is safe and feasible. Compared with LG, RG is associated with less intraoperative blood loss; a faster postoperative recovery time, allowing a greater number of lymph nodes to be dissected; and earlier adjuvant chemotherapy.


Assuntos
Laparoscopia , Procedimentos Cirúrgicos Robóticos , Robótica , Neoplasias Gástricas , Humanos , Idoso , Neoplasias Gástricas/cirurgia , Neoplasias Gástricas/patologia , Pontuação de Propensão , Perda Sanguínea Cirúrgica , Resultado do Tratamento , Gastrectomia , Complicações Pós-Operatórias/cirurgia , Estudos Retrospectivos
2.
Chemphyschem ; 25(7): e202300942, 2024 Apr 02.
Artigo em Inglês | MEDLINE | ID: mdl-38270388

RESUMO

It is well known that magnetic field is one of the effective tools to improve the activity of hydrogen evolution reaction (HER), but considering the inconvenient application of an external magnetic field, it is essential to find a ferromagnetic material with high HER activity itself. Fortunately, recent study has shown that the two-dimmention (2D) Fe2Sn monolayer is a stable ferromagnetic topological Weyl semimetal material with high Tc of 433 K. Here, we report the Fe2Sn monolayer can be used as an alternative HER catalyst compared with expensive platinum (Pt). Our first-principles results show that the Gibbs free energy (ΔGH*) value of the spin polarized Fe2Sn monolayer is -0.06 eV, much better than that without considering spin polarization (-1.23 eV). Moreover, the kinetic analysis demonstrates that the HER occurs on the Fe2Sn monolayer according to the Volmer-Tafel mechanism with low energy barriers. Hence, our findings provide obvious evidence for spin-polarization-improved HER activity, paving a new way to design high-performance HER catalysts.

3.
Analyst ; 149(3): 729-734, 2024 Jan 29.
Artigo em Inglês | MEDLINE | ID: mdl-38131397

RESUMO

Nowadays, easy, convenient, and sensitive sensing strategies are still critical for organophosphorus pesticides in environmental water samples. Herein, a novel organophosphorus pesticide (OP) assay based on acetylcholinesterase (AChE) and a MnO2 nanosheet-mediated CRISPR/Cas12a reaction is reported. The single-strand DNA (ssDNA) activator of CRISPR/Cas12a was simply adsorbed on the MnO2 nanosheets as the nanoswitches of the assay. In the absence of target OPs, AChE hydrolyzed acetylcholine (ATCh) to thiocholine (TCh), which reduced the MnO2 nanosheets to Mn2+, resulting in the release of the activator followed by activation of the CRISPR/Cas12a system. The activated Cas12a thereafter nonspecifically cleaved the FAM/BHQ1-labeled ssDNA (FQ-reporter), producing a fluorescence signal. Upon the addition of target OPs, the hydrolysis of ATCh by AChE was inhibited owing to OPs combining with AChE, and thus effective quantification of OPs could be achieved by measuring the fluorescence changes of the system. As a proof of concept, dichlorvos (DDVP) was chosen as a model OP analyte to address the feasibility of the proposed method. Attributed to the excellent trans-cleavage activity of Cas12a, the fluorescent biosensor exhibits a satisfactory limit of detection (LOD) for DDVP at 0.135 ng mL-1. In addition, the excellent recoveries for the detection of DDVP in environmental water samples demonstrate the applicability of the proposed assay in real sample research.


Assuntos
Técnicas Biossensoriais , Praguicidas , Praguicidas/análise , Compostos Organofosforados , Acetilcolinesterase/genética , Acetilcolinesterase/metabolismo , Sistemas CRISPR-Cas , Diclorvós , Água , Compostos de Manganês , Óxidos , Acetilcolina , Técnicas Biossensoriais/métodos
4.
Surg Endosc ; 38(6): 3156-3166, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38627257

RESUMO

BACKGROUND: The role of minimally invasive surgery using robotics versus laparoscopy in resectable gastric cancer patients with a high body mass index (BMI) remains controversial. METHODS: A total of 482 gastric adenocarcinoma patients with BMI ≥ 25 kg/m2 who underwent minimally invasive radical gastrectomy between August 2016 and December 2019 were retrospectively analyzed, including 109 cases in the robotic gastrectomy (RG) group and 321 cases in the laparoscopic gastrectomy (LG) group. Propensity score matching (PSM) with a 1:1 ratio was performed, and the perioperative outcomes, lymph node dissection, and 3-year overall survival (OS) and disease-free survival (DFS) rates were compared. RESULTS: After PSM, 109 patients were included in each of the RG and LG groups, with balanced baseline characteristics. Compared with the LG group, the RG group had similar intraoperative estimated blood loss [median (IQR) 30 (20-50) vs. 35 (30-59) mL, median difference (95%CI) - 5 (- 10 to 0)], postoperative complications [13.8% vs. 18.3%, OR (95%CI) 0.71 (0.342 to 1.473)], postoperative recovery, total harvested lymph nodes [(34.25 ± 13.43 vs. 35.44 ± 14.12, mean difference (95%CI) - 1.19 (- 4.871 to 2.485)] and textbook outcomes [(81.7% vs. 76.1%, OR (95%CI) 1.39 (0.724 to 2.684)]. Among pathological stage II-III patients receiving chemotherapy, the initiation of adjuvant chemotherapy in the RG group was similar to that in the LG group [median (IQR): 28 (25.5-32.5) vs. 32 (27-38.5) days, median difference (95%CI) - 3 (- 6 to 0)]. The 3-year OS (RG vs. LG: 80.7% vs. 81.7%, HR = 1.048, 95%CI 0.591 to 1.857) and DFS (78% vs. 76.1%, HR = 0.996, 95%CI 0.584 to 1.698) were comparable between the two groups. CONCLUSION: RG conferred comparable lymph node dissection, postoperative recovery, and oncologic outcomes in a selected cohort of patients with BMI ≥ 25 kg/m2.


Assuntos
Gastrectomia , Laparoscopia , Pontuação de Propensão , Procedimentos Cirúrgicos Robóticos , Neoplasias Gástricas , Humanos , Gastrectomia/métodos , Masculino , Procedimentos Cirúrgicos Robóticos/métodos , Feminino , Neoplasias Gástricas/cirurgia , Neoplasias Gástricas/patologia , Pessoa de Meia-Idade , Estudos Retrospectivos , Idoso , Laparoscopia/métodos , Sobrepeso/complicações , Adenocarcinoma/cirurgia , Adenocarcinoma/patologia , Excisão de Linfonodo/métodos , Complicações Pós-Operatórias/epidemiologia , Complicações Pós-Operatórias/etiologia , Intervalo Livre de Doença
5.
J Med Genet ; 60(12): 1210-1214, 2023 Nov 27.
Artigo em Inglês | MEDLINE | ID: mdl-37468236

RESUMO

To date, over 200 families with hereditary leiomyomatosis and renal cell carcinoma (HLRCC) and over 600 families with Birt-Hogg-Dubé (BHD) syndrome have been reported, with low incidence. Here, we describe a patient with suspected rare HLRCC complicated by BHD syndrome. The proband (II1) had characteristic cutaneous leiomyoma-like protrusions on the neck and back, a left renal mass and multiple right renal, liver and bilateral lung cysts. Three family members (I1, II2, II3) had a history of renal cancer and several of the aforementioned clinical features. Two family members (II1, II3) diagnosed with fumarate hydratase (FH)-deficient papillary RCC via pathological biopsy carried two heterozygous variants: FH (NM_000143.3) missense mutation c.1189G>A (p.Gly397Arg) and FLCN (NM_144997.5) frameshift mutation c.1579_1580insA (p.Arg527Glnfs*75). No family member carrying a single variant had renal tumours. In HEK293T cells transfected with mutant vectors, mRNA and protein expression after FLCN p.Arg527Glnfs*75 and FH p.Gly397Arg mutations were significantly lower than those in wild-type (WT) cells. Cell immunofluorescence showed altered protein localisation and reduced protein expression after FLCN p.Arg527Glnfs*75 mutation. The FH WT was uniformly distributed in the cytoplasm, whereas FH protein expression was reduced after the p.Gly397Arg mutation and scattered sporadically with altered cell localisation. Patients with two variants may have a significantly increased penetrance of RCC.


Assuntos
Síndrome de Birt-Hogg-Dubé , Carcinoma de Células Renais , Neoplasias Renais , Leiomiomatose , Humanos , Síndrome de Birt-Hogg-Dubé/complicações , Síndrome de Birt-Hogg-Dubé/genética , Carcinoma de Células Renais/complicações , Carcinoma de Células Renais/genética , Células HEK293 , Neoplasias Renais/complicações , Neoplasias Renais/genética , Leiomiomatose/complicações , Leiomiomatose/genética , Fenótipo
6.
AIDS Res Ther ; 21(1): 2, 2024 01 03.
Artigo em Inglês | MEDLINE | ID: mdl-38173032

RESUMO

BACKGROUND: Empyema caused by Streptococcus constellatus (S. constellatus) is rare in patients with HIV. To analyze the clinical data of a patient living with HIV (PLHIV), who got empyema caused by S. constellatus, investigating the diagnosis and treatment of this disease through literature review to improve the clinical understanding of this disease. CASE PRESENTATION: We have reported here a 58-year-old male PLHIV with cough, wheezing, and fever for 20 days. He has a history type 2 diabetes, alcohol abuse, and a teeth extracted. Chest computed tomography revealed multiple encapsulated pleural effusions, pneumatosis, and partial compressive atelectasis in the right lung. Submission of pleural efusions timely, and then cultures revealed S. constellatus. After comprehensive treatment, including antibiotics, closed pleural drainage, and intrapleural injection of urokinase, the pleural efusion was absorbed, and chest computed tomography also confirmed the improvement. CONCLUSIONS: S. constellatus should not be neglected as a pus pathogen in patients with HIV. comprehensive treatment is important for empyema of S. constellatus.


Assuntos
Diabetes Mellitus Tipo 2 , Empiema Pleural , Infecções por HIV , Streptococcus constellatus , Masculino , Humanos , Pessoa de Meia-Idade , Empiema Pleural/diagnóstico por imagem , Empiema Pleural/tratamento farmacológico , Infecções por HIV/complicações , Drenagem
7.
BMC Public Health ; 24(1): 1456, 2024 May 31.
Artigo em Inglês | MEDLINE | ID: mdl-38822296

RESUMO

BACKGROUND: As a chronic metabolic disease, diabetes poses a serious threat to human health and has become a major public health problem in China and worldwide. In 2020, 30% of Chinese people (aged ≥ 60 years) reported having diabetes mellitus. Moreover, individuals with diabetes living in rural areas face a significantly higher mortality risk compared to those in urban areas. In this study, we explored the inner experience of self-management behaviors in elderly patients with type 2 diabetes in rural areas to inform targeted interventions. METHODS: A phenomenological research design was used to explore the inner experience of self-management in rural elderly diabetes. Ten elderly diabetic patients were sampled from December 2022 to March 2023 in rural areas of Yangcheng County, Jincheng City, ShanXi Province, China. The seven-step Colaizzi phenomenological was used to analyze the interview data and generate themes. RESULTS: Four themes emerged: "Insufficient self-management cognition", "Negative self-management attitude", "Slack self-management behavior", and "No time for self-management". CONCLUSION: The level of self-management among elderly patients with type 2 diabetes in rural areas is low. Healthcare professionals should develop targeted interventions aimed at enhancing their cognitive levels, modifying their coping styles, and improving their self-management abilities to improve their quality of life.


Assuntos
Diabetes Mellitus Tipo 2 , Pesquisa Qualitativa , População Rural , Autogestão , Humanos , Diabetes Mellitus Tipo 2/terapia , Diabetes Mellitus Tipo 2/psicologia , Idoso , Masculino , Feminino , Autogestão/psicologia , População Rural/estatística & dados numéricos , China/epidemiologia , Pessoa de Meia-Idade , Idoso de 80 Anos ou mais
8.
Reprod Domest Anim ; 59(1): e14497, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-37917556

RESUMO

Milk production traits as the most important economic traits of dairy cows, they directly reflect the benefits of breeding and the economic benefits of pasture. In this study, A disintegrin and metalloproteinase-12 (ADAM12), Parkinson's disease gene 2 (PRKN) and dipeptidyl peptidase-like protein subtype 6 (DPP6) polymorphism in 384 Chinese Holstein cows were detected by time-of-flight mass spectrometry and through statistical analysis using software such as Popgene 32, SAS 9.4 and Origin 2022, the relationship between single nucleotide polymorphisms (SNPs) of three genes with four milk production traits such as daily milk yield (DMY), milk fat percentage (MFP), milk protein percentage (MPP) and somatic cell score (SCS) was verified at molecular level. The results showed that four polymorphic loci (116,467,133, 116,604,487, 116,618,268 and 116,835,111) of DPP6 gene, two polymorphic loci (97,665,052 and 97,159,837) of PRKN gene and two polymorphic loci (45,542,714 and 45,553,888) of ADAM12 gene were detected. PRKN-97665052, DPP6-116467133, ADAM12-45553888, DPP6-116604487 and DPP6-116835111 were all in Hardy-Weinberg equilibrium state (p > .05). ADAM12-45542714, PRKN-97159837 and PRKN-97665052 were moderately polymorphic (0.25 ≤ PIC <0.50) in Holstein. It is evident that the selection potential and genetic variation of these five loci are relatively large, and the genetic richness is relatively high. The correlation analysis of different genotypes between these eight loci and milk production traits of Holstein showed that ADAM12-45542714 and DPP6-116835111 (p < .01) had an extremely significant effects on the DMY of Chinese Holstein in Ningxia, while PRKN-97665052 had an extremely significant effect on MFP (p < .01). The effect of PRKN-97665052 and DPP6-116467133 on MPP of Holstein were extremely significant (p < .01). DPP6-116618268 had an extremely significant effect on the SCS of Holstein in Ningxia (p < .01), and AA genotype individuals showed a higher SCS than GG genotype individuals; the other two loci (ADAM12-45553888 and DPP6-116604487) had no significant effects on milk production traits of Holstein (p > .05). In addition, through the joint analysis of DPP6, PRKN and ADAM12 gene loci, it was found that the interaction effect between the three gene loci could significantly affect the DMY, SCS (p < .01) and MPP (p < .05). In conclusion, several different loci of DPP6, PRKN and ADAM12 genes can affect the milk production traits of Holstein to different degrees. PRKN, DPP6 and ADAM12 genes can be used as potential candidate genes for milk production traits of Holstein for marker-assisted selection, providing theoretical basis for breeding of Holstein.


Assuntos
Lactação , Leite , Polimorfismo de Nucleotídeo Único , Animais , Bovinos/genética , Feminino , Humanos , Proteína ADAM12/genética , Proteína ADAM12/metabolismo , Dipeptidil Peptidases e Tripeptidil Peptidases/análise , Dipeptidil Peptidases e Tripeptidil Peptidases/genética , Dipeptidil Peptidases e Tripeptidil Peptidases/metabolismo , Genótipo , Lactação/genética , Leite/química , Proteínas do Leite , Proteínas do Tecido Nervoso/análise , Proteínas do Tecido Nervoso/genética , Proteínas do Tecido Nervoso/metabolismo , Fenótipo , Canais de Potássio/análise , Canais de Potássio/genética , Canais de Potássio/metabolismo , Proteínas/metabolismo , Ubiquitina-Proteína Ligases/genética
9.
Mol Pain ; 19: 17448069231159356, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36750423

RESUMO

Aim: The aim of this study is to investigate the mechanism and interaction of microRNA-181a (miR-181a), toll-like receptor 4 (TLR4) and nuclear factor-kappa B (NF-κB) in gastric hypersensitivity in diabetic rats. Methods: Diabetes was induced by a single intraperitoneal injection of streptozotocin (STZ; 65 mg/kg) in female SD rats. Gastric balloon distension technique was used to measure diabetic gastric hypersensitivity. Gastric-specific (T7-T10) dorsal root ganglion (DRG) neurons were acutely dissociated to measure excitability with patch-clamp techniques. Western blotting was employed to measure the expressions of TLR4, TRAF6 and NF-κB subunit p65 in T7-T10 DRGs. The expressions of microRNAs in T7-T10 DRGs were measured with quantitative real-time PCR and fluorescence in situ hybridization. Dual-luciferase reporter gene assay was used to detect the targeting regulation of microRNAs on TLR4. Results: (1) Diabetic rats were more sensitive to graded gastric balloon distention at 2 and 4 weeks. (2) The expression of TLR4 was significantly up-regulated in T7-T10 DRGs of diabetic rats. Intrathecal injection of CLI-095 (TLR4-selective inhibitor) attenuated diabetic gastric hypersensitivity, and markedly reversed the hyper-excitability of gastric-specific DRG neurons. (3) The expressions of miR-181a and miR-7a were significantly decreased in diabetic rats. MiR-181a could directly regulate the expression of TLR4, while miR-7a couldn't. (4) Intrathecal injection of miR-181a agomir down-regulated the expression of TLR4, reduced the hyper-excitability of gastric-specific neurons, and alleviated gastric hypersensitivity. (5) p65 and TLR4 were co-expressed in Dil-labeled DRG neurons. (6) Inhibition of p65 attenuated diabetic gastric hypersensitivity and hyper-excitability of gastric-specific DRG neurons. (7) The expression of TRAF6 was significantly up-regulated in diabetic rats. CLI-095 treatment also reduced the expression of TRAF6 and p65. Conclusion: The reduction of microRNA-181a in T7-T10 DRGs might up-regulate TLR4 expression. TLR4 activated NF-κB through MyD88-dependent signaling pathway, increased excitability of gastric-specific DRG neurons, and contributed to diabetic gastric hypersensitivity.


Assuntos
Diabetes Mellitus Experimental , MicroRNAs , Ratos , Feminino , Animais , NF-kappa B/metabolismo , Receptor 4 Toll-Like/metabolismo , Ratos Sprague-Dawley , Hibridização in Situ Fluorescente , Fator 6 Associado a Receptor de TNF/metabolismo , MicroRNAs/genética
10.
Hum Brain Mapp ; 44(11): 4407-4421, 2023 08 01.
Artigo em Inglês | MEDLINE | ID: mdl-37306031

RESUMO

The habenula has been implicated in the pathogenesis of pain and analgesia, while evidence concerning its function in chronic low back pain (cLBP) is sparse. This study aims to investigate the resting-state functional connectivity (rsFC) and effective connectivity of the habenula in 52 patients with cLBP and 52 healthy controls (HCs) and assess the feasibility of distinguishing cLBP from HCs based on connectivity by machine learning methods. Our results indicated significantly enhanced rsFC of the habenula-left superior frontal cortex (SFC), habenula-right thalamus, and habenula-bilateral insular pathways as well as decreased rsFC of the habenula-pons pathway in cLBP patients compared to HCs. Dynamic causal modelling revealed significantly enhanced effective connectivity from the right thalamus to right habenula in cLBP patients compared with HCs. RsFC of the habenula-SFC was positively correlated with pain intensities and Hamilton Depression scores in the cLBP group. RsFC of the habenula-right insula was negatively correlated with pain duration in the cLBP group. Additionally, the combination of the rsFC of the habenula-SFC, habenula-thalamus, and habenula-pons pathways could reliably distinguish cLBP patients from HCs with an accuracy of 75.9% by support vector machine, which was validated in an independent cohort (N = 68, accuracy = 68.8%, p = .001). Linear regression and random forest could also distinguish cLBP and HCs in the independent cohort (accuracy = 73.9 and 55.9%, respectively). Overall, these findings provide evidence that cLBP may be associated with abnormal rsFC and effective connectivity of the habenula, and highlight the promise of machine learning in chronic pain discrimination.


Assuntos
Dor Crônica , Habenula , Dor Lombar , Humanos , Dor Lombar/diagnóstico por imagem , Dor Lombar/patologia , Imageamento por Ressonância Magnética/métodos , Habenula/diagnóstico por imagem , Dor Crônica/diagnóstico por imagem , Aprendizado de Máquina
11.
Respir Res ; 24(1): 92, 2023 Mar 24.
Artigo em Inglês | MEDLINE | ID: mdl-36964568

RESUMO

BACKGROUND: Pulmonary hypertension (PH) is a devastating disease characterized by vasoconstriction and vascular remodeling, leading to right ventricular failure and death. PH is a common complication of chronic obstructive pulmonary disease (COPD). Accumulating evidence demonstrate that microRNAs participate in the pathobiology of PH in COPD patients. In this study, we aimed to evaluate the expression and function of microRNA-4640-5p (miR-4640-5p) in PH. METHODS: The mRNA and protein levels were determined by quantitative polymerase chain reaction (qPCR) and western blot, separately. Functional assays and western blot were performed to determine the effects of miR-4640-5p and NOS1 on cell growth, migration. Besides, the dual-luciferase reporter assays were used to validate miR-4640-5p and NOS1 interactions. RESULTS: We found that miR-4640-5p expression was significantly higher in the lung tissues of COPD-PH patients than in the healthy controls while higher expression of miR-4640-5p was correlated with more severe COPD-PH. By using pulmonary artery smooth muscle cell (PASMC) in in vitro assays, we demonstrated that inhibition of miR-4640-5p suppressed cell proliferation and migration of PASMC via regulating mTOR/S6 signaling. Bioinformatics analysis and validation experiments revealed that nitric oxide synthase 1 (NOS1) was a direct downstream target of miR-4640-5p. Overexpression of NOS1 partially antagonized the effect of miR-4640-5p in regulating PASMC cell proliferation and migration. In addition, our findings suggested that miR-4640-5p/NOS1 axis regulated mitochondrial dynamics in PASMCs. Furthermore, in the hypoxia-induced PH rat model, inhibition of miR-4640-5p ameliorated PH with reduced right ventricular systolic pressure and Fulton index. CONCLUSIONS: miR-4640-5p regulates PH via targeting NOS1, which provides a potential diagnostic biomarker and therapeutic target for COPD-PH patients.


Assuntos
Hipertensão Pulmonar , MicroRNAs , Doença Pulmonar Obstrutiva Crônica , Ratos , Animais , Hipertensão Pulmonar/metabolismo , Hipóxia Celular/fisiologia , MicroRNAs/genética , MicroRNAs/metabolismo , Doença Pulmonar Obstrutiva Crônica/metabolismo , Artéria Pulmonar/metabolismo , Miócitos de Músculo Liso/metabolismo , Óxido Nítrico Sintase/metabolismo , Proliferação de Células/genética , Células Cultivadas
12.
Methods ; 205: 167-178, 2022 09.
Artigo em Inglês | MEDLINE | ID: mdl-35781052

RESUMO

The detection of sleep apnea is critical for assessing sleep quality. It is also a proven biometric in diagnosing cardiovascular and other diseases. Recent studies have shown that radar-based non-contact vital sign monitoring system can effectively detect sleep apnea. However, the detection accuracy in the current study still needs to be improved. In this paper, we propose a sleep apnea detection framework based on FMCW radar. First, the radar system is employed to record the sleep data throughout the night with polysomnography (PSG) comparison. Then, in order to extract more accurate respiratory signal from the raw radar data, the signal processing methods are investigated to solve the observed discontinuity phenomenon. Finally, machine learning methods are adopted. The apneic and not-apneic events are classified accurately by selecting effective features of respiratory signal. As shown in the experimental results, the proposed system could achieve a good classification performance with an accuracy of 95.53%, a sensitivity of 72.60%, a specificity of 97.32%, a Kappa of 0.68, and an F-score of 0.84.


Assuntos
Aprendizado de Máquina , Processamento de Sinais Assistido por Computador , Síndromes da Apneia do Sono , Humanos , Polissonografia/métodos , Síndromes da Apneia do Sono/diagnóstico
13.
Br J Anaesth ; 130(2): e272-e280, 2023 02.
Artigo em Inglês | MEDLINE | ID: mdl-35933172

RESUMO

BACKGROUND: The association between preoperative cognitive impairment, postoperative pain, and postoperative delirium in older patients after noncardiac surgery is not known. METHODS: This was a secondary analysis of datasets from three previous studies. Patients aged ≥55 yr who underwent elective noncardiac surgery were enrolled. Preoperative cognitive impairment was defined as Mini-Mental State Examination <27. Pain intensity with movement was assessed using an 11-point numeric rating scale at 12-h intervals during the first 72 h after surgery; time-weighted average (TWA) pain score was calculated. Primary outcome was the occurrence of delirium within the first 5 postoperative days. Mediation analysis was used to investigate the relationships between cognitive impairment, pain score, and delirium. RESULTS: A total of 1497 patients were included. Prevalence of preoperative cognitive impairment was 40.3% (603/1497). Patients with cognitive impairment suffered higher TWA pain score within 72 h (4 [3-5] vs 3 [2-5], P=0.004) and more delirium within 5 days (12.9% [78/603] vs 4.9% [44/894], P<0.001) when compared with those without. Total and direct associations between cognitive impairment and delirium were (adjusted ß) 8.3% (95% confidence interval [CI], 4.8-12.0%; P<0.001) and 7.8% (95% CI, 4.4-12.0%; P<0.001), respectively. A significant indirect association with acute pain was observed between cognitive impairment and delirium (adjusted ß=0.4%; 95% CI, 0.1-1.0%; P=0.006), accounting for 4.9% of the total effect. CONCLUSIONS: The association between preoperative cognitive impairment and delirium is significantly mediated by acute pain in patients after noncardiac surgery. Considering the small effect size, clinical significance of this mediation effect requires further investigation.


Assuntos
Dor Aguda , Disfunção Cognitiva , Delírio , Delírio do Despertar , Humanos , Idoso , Delírio/diagnóstico , Delírio/epidemiologia , Delírio/etiologia , Complicações Pós-Operatórias/epidemiologia , Estudos Prospectivos , Disfunção Cognitiva/diagnóstico , Disfunção Cognitiva/etiologia , Fatores de Risco
14.
Bioorg Chem ; 132: 106381, 2023 03.
Artigo em Inglês | MEDLINE | ID: mdl-36706532

RESUMO

Two enantiomeric pairs of macrocyclic acylphloroglucinols (1a/1b and 2a/2b) with an unprecedented carbon skeleton featuring a bicyclo[12.3.1]octadecane core, together with an undescribed biogenetically related long-chain acylphloroglucinol (3), were isolated from Syzygium szemaoense. Their structures were fully established by spectroscopic method, X-ray crystallographic analysis, and ECD calculation. Compounds 1b and 2a/2b exhibited inhibition against death-associated protein kinase-related apoptosis inducing protein kinase 2 (DRAK2) and ATP citrate lyase (ACLY), respectively.


Assuntos
Syzygium , Estrutura Molecular , Cristalografia por Raios X , Análise Espectral
15.
Dysphagia ; 38(6): 1537-1545, 2023 12.
Artigo em Inglês | MEDLINE | ID: mdl-37142734

RESUMO

To observe the clinical effects of transcranial direct current stimulation (tDCS) combined with conventional swallowing rehabilitation training on post-stroke dysphagia and explore its long-term efficacy. A total of 40 patients with dysphagia after the first stroke were randomly divided into a treatment group (n = 20) and a conventional group (n = 20). The treatment group received tDCS combined with conventional swallowing rehabilitation training, while the conventional group only received conventional swallowing rehabilitation training. The Standardized Swallowing Assessment (SSA) Scale and the Penetration-Aspiration Scale (PAS) were used to assess dysphagia before and after treatment, at the end of 10 treatments, and at the 3-month follow-up. The changes in infection indicators [the white blood cell (WBC), C-reactive protein (CRP) and procalcitonin (PCT)], the oxygenation indicator [arterial partial pressure of oxygen (PaO2)] and nutrition-related indicators [hemoglobin (Hb) and serum prealbumin (PAB)] were compared before and after treatment. The SSA and PAS scores were lower in both groups after treatment than before treatment, and the difference was statistically significant (P < 0.01). The SSA and PAS scores of the treatment group were lower than those of the conventional group before and after treatment and during follow-up, and the difference was statistically significant (P < 0.05, P < 0.01). A within-group comparison showed that WBC, CRP and PCT after treatment were lower than those before treatment, and the difference was statistically significant (P < 0.05). The PaO2, Hb and serum PAB were higher after treatment than before treatment, with a statistically significant difference (P < 0.05). The WBC, CRP and PCT of the tDCS group were lower than those of the conventional group, and PaO2, Hb and serum PAB were higher in the treatment group than in the conventional group, with a statistically significant difference (P < 0.01). The tDCS combined with conventional swallowing rehabilitation training can improve dysphagia with a better effect than conventional swallowing rehabilitation training and has a certain long-term efficacy. In addition, tDCS combined with conventional swallowing rehabilitation training can improve nutrition and oxygenation and reduce infection levels.


Assuntos
Transtornos de Deglutição , Reabilitação do Acidente Vascular Cerebral , Acidente Vascular Cerebral , Estimulação Transcraniana por Corrente Contínua , Humanos , Transtornos de Deglutição/terapia , Deglutição , Resultado do Tratamento , Acidente Vascular Cerebral/complicações
16.
Int J Urol ; 30(11): 991-999, 2023 11.
Artigo em Inglês | MEDLINE | ID: mdl-37431969

RESUMO

OBJECTIVES: Real-world uptake of treatment intensification (TI) with novel hormonal agents (NHA) or chemotherapy as treatment of metastatic prostate cancer remains low outside of trial settings. We aim to report the prescription patterns and treatment outcomes of de novo metastatic hormone-sensitive prostate cancer (mHSPC) in a tertiary institution. METHODS: This is a retrospective cohort study using real-world data from a prospectively maintained prostate cancer registry. We selected patients newly diagnosed with mHSPC from January 2016 to December 2020. Clinicopathological parameters were recorded to determine their impact on prescription patterns. RESULTS: In total, 585 patients with metastatic prostate cancer were identified. Prescription of NHA increased from 10.5% (2016) to 50.4% (2020), but that of chemotherapy declined. Factors associated with TI were (1) baseline health status: Charlson Comorbidity Index 0-2, ECOG 0-1, age ≤ 65, (2) disease burden: PSA (>400, CHAARTED high volume disease, p = 0.004), development of systemic complications and (3) physician factor: primary physician being uro-oncologist and medical oncologist versus general urologist. Patients with TI had a longer mean time to castration-resistant prostate cancer (45.0 vs. 32.5 months, HR 0.567, 95% CI: 0.441-0.730, p < 0.001) and overall survival (55.3 vs. 46.8 months, HR 0.612, 95% CI, 0.447-0.837, p = 0.001). CONCLUSION: This study demonstrated the trend of treatment prescription of mHSPC and factors contributing to the use of TI. TI improved mean time to CRPC and OS.


Assuntos
Neoplasias de Próstata Resistentes à Castração , Neoplasias da Próstata , Masculino , Humanos , Estudos Retrospectivos , Neoplasias de Próstata Resistentes à Castração/patologia , Neoplasias da Próstata/tratamento farmacológico , Resultado do Tratamento , Próstata/patologia , Sistema de Registros , Antagonistas de Androgênios/uso terapêutico
17.
Int J Mol Sci ; 24(20)2023 Oct 23.
Artigo em Inglês | MEDLINE | ID: mdl-37895162

RESUMO

Oral inflammatory diseases (OIDs) include many common diseases such as periodontitis and pulpitis. The causes of OIDs consist microorganism, trauma, occlusal factors, autoimmune dis-eases and radiation therapy. When treated unproperly, such diseases not only affect oral health but also pose threat to people's overall health condition. Therefore, identifying OIDs at an early stage and exploring new therapeutic strategies are important tasks for oral-related research. Mitochondria are crucial organelles for many cellular activities and disruptions of mitochondrial function not only affect cellular metabolism but also indirectly influence people's health and life span. Mitochondrial dysfunction has been implicated in many common polygenic diseases, including cardiovascular and neurodegenerative diseases. Recently, increasing evidence suggests that mitochondrial dysfunction plays a critical role in the development and progression of OIDs and its associated systemic diseases. In this review, we elucidated the critical insights into mitochondrial dysfunction and its involvement in the inflammatory responses in OIDs. We also summarized recent research progresses on the treatment of OIDs targeting mitochondrial dysfunction and discussed the underlying mechanisms.


Assuntos
Doenças Mitocondriais , Periodontite , Pulpite , Humanos , Estresse Oxidativo/fisiologia , Mitocôndrias/metabolismo , Periodontite/etiologia , Periodontite/terapia , Periodontite/metabolismo , Longevidade , Pulpite/metabolismo , Doenças Mitocondriais/etiologia , Doenças Mitocondriais/terapia , Doenças Mitocondriais/metabolismo
18.
Int Heart J ; 64(6): 1018-1024, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-38030288

RESUMO

Atrial fibrillation (AF) is closely related to abnormal cerebral blood flow. Inflammation and oxidative stress have always been important factors in the pathophysiology of AF. It remains unknown whether inflammation and oxidative stress are correlated to hippocampal perfusion in patients with AF.Sixty-three patients with AF with normal hippocampal blood perfusion (NHBP) were compared to 71 patients with AF with abnormal hippocampal blood perfusion (AHBP) using a case-control study design. The serum levels of inflammation and oxidative stress were measured. The hippocampal perfusion was detected. (1) The serum levels of high-sensitivity C-reactive protein (hs-CRP), interleukin 6 (IL-6), and oxidized low-density lipoprotein (ox-LDL) were statistically higher in the AHBP group than in the NHBP group. In the AHBP subgroup analysis, the serum levels of hs-CRP and IL-6 were statistically higher in patients with persistent AF than those with paroxysmal AF. (2) The relative cerebral blood volume (rCBV), mean transit time (MTT), and the time-to-peak (TTP) were statistically higher in the AHBP group than in the NHBP group. Moreover, cerebral blood flow (rCBF) was statistically lower in the AHBP group than in the NHBP group. (3) relative cerebral blood volume (rCBV), rCBF, MTT, and TTP were passively associated with serum hs-CRP and IL-6; rCBV, rCBF, and MTT were positively associated with ox-LDL. The serum levels of hs-CRP, IL-6, and ox-LDL were associated with AHBP in patients with AF after multivariate logistic regression analysis.Oxidative stress and inflammatory biomarkers were increased in patients with AF with AHBP, in which the serum levels of hs-CRP and IL-6 in the persistent AF group were statistically higher than those in the paroxysmal AF group. The serum levels of hs-CRP, IL-6, and ox-LDL were associated with AHBP in patients with AF.


Assuntos
Fibrilação Atrial , Humanos , Proteína C-Reativa/metabolismo , Interleucina-6/metabolismo , Estudos de Casos e Controles , Inflamação , Biomarcadores , Estresse Oxidativo , Perfusão
19.
Molecules ; 28(17)2023 Aug 28.
Artigo em Inglês | MEDLINE | ID: mdl-37687125

RESUMO

CAG is a burdensome and progressive disease. Numerous studies have shown the effectiveness of RUT in digestive system diseases. The therapeutic effects of RUT on MNNG-induced CAG and the potential mechanisms were probed. MNNG administration was employed to establish a CAG model. The HE and ELISA methods were applied to detect the treatment effects. WB, qRT-PCR, immunohistochemistry, TUNEL, and GES-1 cell flow cytometry approaches were employed to probe the mechanisms. The CAG model was successfully established. The ELISA and HE staining data showed that the RUT treatment effects on CAG rats were reflected by the amelioration of histological damage. The qRT-PCR and WB analyses indicated that the protective effect of RUT is related to the upregulation of the SHH pathway and downregulation of the downstream of apoptosis to improve gastric cellular survival. Our data suggest that RUT induces a gastroprotective effect by upregulating the SHH signaling pathway and stimulating anti-apoptosis downstream.


Assuntos
Gastrite Atrófica , Proteínas Hedgehog , Camundongos , Ratos , Animais , Gastrite Atrófica/induzido quimicamente , Gastrite Atrófica/tratamento farmacológico , Metilnitronitrosoguanidina , Quinazolinas , Nitrosoguanidinas , Transdução de Sinais
20.
J Tissue Viability ; 32(2): 206-212, 2023 May.
Artigo em Inglês | MEDLINE | ID: mdl-36803882

RESUMO

OBJECTIVE: To determine the influencing factors of medical device related pressure injury (MDRPU) in medical staff by meta-analysis. METHODS: A comprehensive literature search was conducted by PubMed, Embase, Cochrane Library, Web of Science, CNKI, VIP, CBM, and WanFang Data (from inception to July 27, 2022). Two researchers independently performed literature screening, quality evaluation and data extraction, and meta-analysis was conducted with RevMan 5.4 and Stata12.0 software. RESULTS: Total of 11215 medical staff were included in 9 articles. Meta analysis showed that gender, occupation, sweating, wearing time, single working time, department of COVID-19, preventive measures, and level 3 PPE were the risk factors for MDRPU in medical staff (P < 0.05). CONCLUSION: The outbreak of COVID-19 led to the occurrence of MDRPU among medical staff, and the influencing factors should be focused on. The medical administrator can further improve and standardize the preventive measures of MDRPU according to the influencing factors. Medical staff should accurately identify high-risk factors in the clinical work process, implement intervention measures, and reduce the incidence of MDRPU.


Assuntos
COVID-19 , Lesões por Esmagamento , Úlcera por Pressão , Humanos , COVID-19/complicações , COVID-19/epidemiologia , Úlcera por Pressão/epidemiologia , Úlcera por Pressão/etiologia , Úlcera por Pressão/prevenção & controle , Pandemias , Pessoal de Saúde , Fatores de Risco , Lesões por Esmagamento/complicações
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA