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1.
Nat Chem Biol ; 2024 May 21.
Artigo em Inglês | MEDLINE | ID: mdl-38773330

RESUMO

The C-terminal to LisH (CTLH) complex is a ubiquitin ligase complex that recognizes substrates with Pro/N-degrons via its substrate receptor Glucose-Induced Degradation 4 (GID4), but its function and substrates in humans remain unclear. Here, we report PFI-7, a potent, selective and cell-active chemical probe that antagonizes Pro/N-degron binding to human GID4. Use of PFI-7 in proximity-dependent biotinylation and quantitative proteomics enabled the identification of GID4 interactors and GID4-regulated proteins. GID4 interactors are enriched for nucleolar proteins, including the Pro/N-degron-containing RNA helicases DDX21 and DDX50. We also identified a distinct subset of proteins whose cellular levels are regulated by GID4 including HMGCS1, a Pro/N-degron-containing metabolic enzyme. These data reveal human GID4 Pro/N-degron targets regulated through a combination of degradative and nondegradative functions. Going forward, PFI-7 will be a valuable research tool for investigating CTLH complex biology and facilitating development of targeted protein degradation strategies that highjack CTLH E3 ligase activity.

2.
Eur Radiol ; 2024 May 28.
Artigo em Inglês | MEDLINE | ID: mdl-38806802

RESUMO

OBJECTIVES: To investigate the imaging features of pancreatic ductal adenocarcinoma (PDAC) with histological large duct pattern. METHODS: Our study included 37 patients (mean age, 66.5 years; 22 women) with surgically proven PDAC with histological large duct pattern, whose imaging features were classified into four types: Type I, solid mass; Type II, predominantly cystic mass with intracystic solid components; Type III, predominantly solid mass with intratumoral cysts; and Type IV, solid mass with peritumoral retention cysts or pseudocysts. Two radiologists independently analyzed both CT and MRI images for the morphological type, presence of abrupt main pancreatic duct (MPD) cutoff, adjacent vascular invasion, diffusion restriction, and reached consensus. RESULTS: On CT, 26 patients (70.3%) had Type I tumors, five (13.5%) had Type II, three (8.1%) had Type III, and three (8.1%) had Type IV. Among the 26 patients with Type I tumors on CT, 16 had tumors with multiple intratumoral cysts within the solid mass on MRI and were subsequently classified as Type III. Accordingly, 10 patients (27.0%) were classified as Type I, five (13.5%) as Type II, 19 (51.7%) as Type III, and three (8.1%) as Type IV on MRI. Of the 37 patients, 27 (73.0%) had an abrupt MPD cutoff, 15 (40.5%) had adjacent vascular invasion, and 25 (67.6%) had diffusion restriction on MRI. CONCLUSIONS: Predominantly solid pancreatic masses with small intratumoral cysts visualized on MRI may be a characteristic imaging finding of PDAC with histological large duct pattern, and differentiate it from conventional PDAC or other cystic pancreatic tumors. CLINICAL RELEVANCE STATEMENT: Radiologists should be familiar with the various imaging features of PDAC with histological large duct pattern and should be aware that it may mimic other solid or cystic tumors of the pancreas. KEY POINTS: Imaging features of pancreatic ductal adenocarcinoma with histological large duct pattern can be classified into four types. This pathology more frequently appears as a predominantly solid mass with intratumoral cysts on MRI than on CT. Adding MRI to CT may help identify pancreatic ductal adenocarcinoma with histological large duct pattern.

3.
Ecotoxicol Environ Saf ; 269: 115798, 2024 Jan 01.
Artigo em Inglês | MEDLINE | ID: mdl-38086261

RESUMO

Di(2-ethylhexy) phthalate (DEHP) is a widely used plasticizer that is ubiquitously found in the environment. Using a mouse model, we investigated the impact of early life DEHP exposure ranging from the prenatal to peripubertal developmental period of the female reproductive system. Pregnant female mice were allocated to three groups as follows: control, 100 mg/kg/day, and 500 mg/kg/day DEHP treatment. DEHP exposure was introduced through feeding during pregnancy (3 weeks) and lactation (3 weeks). After weaning, the offspring were also exposed to DEHP through feeding for another 2 weeks. Observations were conducted on female offspring at 10 and 24 weeks. The number of live offspring per dam was significantly lower in the high-DEHP-exposed group (500 mg/kg/day) compared to the control group (7.67 ± 1.24 vs. 14.17 ± 0.31; p < 0.05) despite no difference in pregnancy rates across the groups. Low-DEHP exposure (100 mg/kg/day) resulted to a decreased body weight (36.07 ± 3.78 vs. 50.11 ± 2.11 g; p < 0.05) and decreased left uterine length (10.60 ± 1.34 vs. 14.77 ± 0.82 mm; p < 0.05) in 24-week- old female mice. As early as 10 weeks, endometrial atrophy and fibrosis were observed, and endometrial cystic hyperplasia was noted in female mice at 24 weeks. Our study is the first to demonstrate that female mice exposed to DEHP in the early life developed endometrial fibrosis in the female offspring. Further studies on the consequences of these observations in fecundity and other reproductive functions are warranted.


Assuntos
Dietilexilftalato , Ácidos Ftálicos , Efeitos Tardios da Exposição Pré-Natal , Gravidez , Humanos , Feminino , Dietilexilftalato/toxicidade , Fibrose
4.
Nano Lett ; 23(17): 7897-7905, 2023 09 13.
Artigo em Inglês | MEDLINE | ID: mdl-37435905

RESUMO

A new type of microfluidic bioreactor with fibrous micromixers for the ingredient mixing and a long macrochannel for the in vitro transcription reaction was fabricated for the continuous production of mRNA. The diameter of the fibrous microchannels in the micromixers was tuned by using an electrospun microfibrous disc with different microfiber diameters. The micromixer with a larger diameter of fibrous microchannels exhibited a better mixing performance than the others. The mixing efficiency was increased to 0.95 while the mixture was passed through the micromixers, suggesting complete mixing. To demonstrate the continuous production of mRNA, the ingredients for in vitro transcription were introduced into the perfluoropolyether microfluidic bioreactor. The mRNA synthesized by the microfluidic bioreactor had the same sequence and in vitro/in vivo performances as those prepared by the bulk reaction. The continuous reaction in the microfluidic bioreactor with efficient mixing performance can be used as a powerful platform for various microfluidic reactions.


Assuntos
Técnicas Analíticas Microfluídicas , Microfluídica , Desenho de Equipamento
5.
Medicina (Kaunas) ; 60(6)2024 Jun 13.
Artigo em Inglês | MEDLINE | ID: mdl-38929597

RESUMO

Backgound and Objectives: Gastric metastasis from invasive ductal breast cancer (BC) is rare. It mainly occurs in patients with lobular BC. The occurrence of multiple metastases is typically observed several years after the primary diagnosis. Endoscopic findings of gastric metastasis of the BC were usually the linitis plastic type. Case presentation: A 72-year-old women who underwent right modified radical mastectomy (MRM) 10 month ago was referred after being diagnosed with early gastric cancer (EGC) during systemic chemotherapy. EGC type I was found at gastric fundus, and pathologic finding showed poorly differentiated adenocarcinoma. Metachronous double primary tumor EGC was considered. Management and Outcome: A laparoscopic total gastrectomy was performed, and postoperative pathology revealed submucosa invasion and two lymph node metastases. A pathologic review that focused on immunohistochemical studies of selected antibodies such as GATA binding protein 3 (GATA3), gross cystic disease fluid protein-15 (GCDFP-15), cytokeratin 7 (CK7) was performed again, comparing previous results. As a result, gastric metastasis from BC was diagnosed. After totally laparoscopic total gastrectomy, palliative first-line chemotherapy with paclitaxel/CDDP was performed. Two months after gastrectomy, she was diagnosed with para-aortic lymph node metastasis and multiple bone metastases. She expired six months after gastrectomy. Conclusions: Gastric metastasis from invasive ductal carcinoma of the breast, which is clinically manifested as EGC, is a very rare condition. If there is a history of BC, careful pathological review will be required.


Assuntos
Neoplasias da Mama , Carcinoma Ductal de Mama , Gastrectomia , Neoplasias Gástricas , Humanos , Feminino , Neoplasias Gástricas/patologia , Neoplasias Gástricas/diagnóstico , Idoso , Neoplasias da Mama/patologia , Carcinoma Ductal de Mama/secundário , Carcinoma Ductal de Mama/diagnóstico , Gastrectomia/métodos , Diagnóstico Diferencial , Metástase Linfática
6.
J Med Virol ; 95(12): e29309, 2023 12.
Artigo em Inglês | MEDLINE | ID: mdl-38100632

RESUMO

The E6 and E7 proteins of specific subtypes of human papillomavirus (HPV), including HPV 16 and 18, are highly associated with cervical cancer as they modulate cell cycle regulation. The aim of this study was to investigate the potential antitumor effects of a messenger RNA-HPV therapeutic vaccine (mHTV) containing nononcogenic E6 and E7 proteins. To achieve this, C57BL/6j mice were injected with the vaccine via both intramuscular and subcutaneous routes, and the resulting effects were evaluated. mHTV immunization markedly induced robust T cell-mediated immune responses and significantly suppressed tumor growth in both subcutaneous and orthotopic tumor-implanted mouse model, with a significant infiltration of immune cells into tumor tissues. Tumor retransplantation at day 62 postprimary vaccination completely halted progression in all mHTV-treated mice. Furthermore, tumor expansion was significantly reduced upon TC-1 transplantation 160 days after the last immunization. Immunization of rhesus monkeys with mHTV elicited promising immune responses. The immunogenicity of mHTV in nonhuman primates provides strong evidence for clinical application against HPV-related cancers in humans. All data suggest that mHTV can be used as both a therapeutic and prophylactic vaccine.


Assuntos
Proteínas Oncogênicas Virais , Infecções por Papillomavirus , Vacinas contra Papillomavirus , Neoplasias do Colo do Útero , Humanos , Feminino , Animais , Camundongos , Papillomavirus Humano , Proteínas Oncogênicas Virais/genética , Infecções por Papillomavirus/prevenção & controle , RNA Mensageiro/genética , Proteínas E7 de Papillomavirus/genética , Camundongos Endogâmicos C57BL , Vacinação/métodos , Imunização , Neoplasias do Colo do Útero/prevenção & controle
7.
Fish Shellfish Immunol ; 138: 108807, 2023 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-37169112

RESUMO

The COVID-19 pandemic has significantly impacted human health for three years. To mitigate the spread of SARS-CoV-2, the development of neutralizing antibodies has been accelerated, including the exploration of alternative antibody formats such as single-domain antibodies. In this study, we identified variable new antigen receptors (VNARs) specific for the receptor binding domain (RBD) of SARS-CoV-2 by immunizing a banded houndshark (Triakis scyllium) with recombinant wild-type RBD. Notably, the CoV2NAR-1 clone showed high binding affinities in the nanomolar range to various RBDs and demonstrated neutralizing activity against SARS-CoV-2 pseudoviruses. These results highlight the potential of the banded houndshark as an animal model for the development of VNAR-based therapeutics or diagnostics against future pandemics.


Assuntos
COVID-19 , Anticorpos de Domínio Único , Humanos , Animais , SARS-CoV-2/metabolismo , Anticorpos Antivirais , Pandemias , Anticorpos Neutralizantes
8.
Org Biomol Chem ; 21(7): 1356-1372, 2023 02 15.
Artigo em Inglês | MEDLINE | ID: mdl-36662157

RESUMO

Recent advances in the synthesis of sulfur(VI)-fluorides has enabled incredible growth in their application in biomolecular chemistry. This review aims to serve as a primer highlighting synthetic strategies toward a diversity of S(VI) fluorides and their application in chemical biology, bioconjugation, and medicinal chemistry.


Assuntos
Química Farmacêutica , Fluoretos , Fluoretos/química , Estrutura Molecular , Enxofre/química , Química Click
9.
Folia Phoniatr Logop ; 75(6): 431-446, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37634489

RESUMO

PURPOSE/INTRODUCTION: Narrative language skills are critical for effective social interactions and academic success. Consequently, narratives are regularly an aspect of assessment and intervention for children with communication impairments, supporting the need for information about typical development from children across cultures. Development of coherent personal narratives is associated with growth of both one's individual identity and cultural identity which are linked to psychological well-being. The topics and contents of children's personal stories can provide insight into cultural influences on what children consider important, how they interpret experiences, and their values and beliefs, which in turn contribute to their developing individual and cultural self-identity. The purpose of this study was to investigate the topics and content of personal narratives told by typically developing 10-year-old children from East Asian and Western English-speaking cultures. METHODS: There were 20 children in each of three East Asian language groups - Mandarin, Cantonese, and Korean; and 62 children in the English-speaking groups (22 in the USA and 20 each in the Australian and New Zealand groups). In each group, half were boys and half were girls. Children responded to prompts from the Global TALES protocol to elicit personal narratives. All language samples were transcribed, translated, and coded for topic choices using qualitative content analysis in collaborative discussions by the four authors, who included an English-speaking author from the USA (C.E.W.), and three authors, who are native speakers of the three East Asian languages, Mandarin (K.-M.C.), Cantonese (A.M.-Y.W.), and Korean (J.P.L.). RESULTS: Results on topics in stories from East Asian and Western English-speaking cultures are described in relation to literature on anthropology. English-speaking children and East Asian children in this study talked about similar topics in their personal narratives, but the frequency of these topics within their stories varied. Possible explanations for differences in story topics are discussed within a framework on cultural dimensions. CONCLUSION: Evaluation of the topics of children's personal narratives provides insight into what is important to the children and the way they view their worlds. This information may inform clinical approaches to assessment and intervention with children with communication impairments, encouraging clinicians to go beyond analysis of language structure to consider multiple factors that influence communicative competence.


Assuntos
População do Leste Asiático , Idioma , Masculino , Feminino , Humanos , Criança , Austrália , Narração , Linguagem Infantil
10.
Small ; 18(42): e2203633, 2022 10.
Artigo em Inglês | MEDLINE | ID: mdl-36108130

RESUMO

Herein, a sequential gas-phase process involving air jet milling followed by chemical vapor deposition (CVD), is demonstrated to be an efficient strategy for the fabrication of heterolayered 2D nanohybrids (2DNHs) decorated with nanocatalysts. Tens of grams of the nanohybrids, which is a substantial quantity at the laboratory scale, are produced in the absence of solvents and water, and without the need for an extra purification procedure. Air jet milling enables the development of binary/ternary heterolayered structures consisting of graphene, WSe2 , and/or MoS2 via the gas-phase co-exfoliation of their bulk counterparts. Based on the X-ray photoelectron and Raman spectroscopy data, the heterolayers of the 2DNHs exert chemical and electronic effects on each other, while diminishing the interactions between same-component layers. Moreover, the electrochemically active surface area increases by >190% and the charge transfer resistance decreases by >35%. CVD is performed to introduce Pt and Ru nanoparticles with diameters of a few nanometers as additional electrocatalysts into the 2DNHs. The nanocatalyst-decorated 2DNHs show excellent performance for the production of hydrogen and oxygen gases in water-splitting cells. Notably, the proposed all-gas-phase processes allow for the large-scale production of functional 2DNHs with minimal negative environmental impact, which is crucial for the commercialization of nanomaterials.


Assuntos
Doenças Cardiovasculares , Grafite , Humanos , Água , Grafite/química , Molibdênio , Hidrogênio , Gases , Oxigênio/química , Solventes
11.
J Sci Food Agric ; 101(1): 307-314, 2021 Jan 15.
Artigo em Inglês | MEDLINE | ID: mdl-32623742

RESUMO

BACKGROUND: Polyphenol oxidase (PPO) and peroxidase (POD) are key enzymes associated with shelf life and defense responses. Thus, the activity of PPO and POD enzymes is usually assessed to check the quality of food samples and to understand the physiological responses of plants to different stresses. However, the outcomes of PPO and POD activity assessment studies are highly dependent on assay conditions. Hence, in this study, we initially optimized PPO and POD extraction and high-throughput 96-well plates-based enzymatic activity assessment methods to evaluate the inhibitory potential of tomato volatile compounds. Later, we explored the effects of net-house and open-field growing on the PPO and POD activity in tomato fruits of eight cultivars. RESULTS: We found 150 mM of catechol and pH 7.0 were the optimal conditions for the maximum activity for the PPO assay. Conversely, 24 mM guaiacol with 12 mM H2 O2 and pH 6.0 was the best condition for the POD assay. Thermal inactivation studies confirmed that tomato POD is more resistant to heat than PPO. We found that the production systems had a considerable genotype-specific impact on tomato PPO and POD activity. Moreover, amongst the volatiles that were studied, ß-damascenone and d-limonene showed 50% PPO inhibition at 40 and 80 mM, respectively. CONCLUSION: The results of this study can be used to improve the shelf-life of fresh tomato fruit and its products. The findings also underscore the significance of PPO and POD enzymes as physiological trait markers in the tomato crop and fruit quality improvement programs. © 2020 Society of Chemical Industry.


Assuntos
Catecol Oxidase/química , Peroxidase/química , Solanum lycopersicum/enzimologia , Ensaios Enzimáticos , Estabilidade Enzimática , Frutas/química , Frutas/enzimologia , Cinética , Odorantes/análise , Compostos Orgânicos Voláteis/química
12.
Int Nurs Rev ; 68(2): 256-265, 2021 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-33894067

RESUMO

AIM: To identify the factors affecting fear, anxiety and depressive symptoms among frontline nurses working with COVID-19 patients or are in charge of COVID-19 screening in Korea. BACKGROUND: Nurses are at a higher risk of COVID-19 infection because they are in closer, longer-duration contact with patients. These situations can negatively affect the mental health of nurses. METHODS: This study analysed data from COVID-19 module in the Korean Nurses' Health Study. Data from 906 participants were analysed. To identify the factors influencing mental health, descriptive statistics, Pearson's correlation and hierarchical multiple regression analyses were performed. RESULTS: Caring for patients who are COVID-19-positive increased levels of fear, anxiety and depressive symptoms of nurses. The hospital safety climate influenced mental well-being among nurses. CONCLUSION: Caring for patients with COVID-19 had a negative impact on fear, anxiety and depressive symptoms. However, the higher was the perceived hospital safety climate, the lower were the nurses' psychological symptoms. Further research on the mental health of nurses is warranted. IMPLICATIONS FOR NURSING AND HEALTH POLICY: Institutions should manage human resources to enable periodic rotation of nurses' work and working periods related to COVID-19. In addition, hospital managers should provide sufficient personal protective equipment, related education, and safety climate.


Assuntos
COVID-19/enfermagem , Saúde Mental , Recursos Humanos de Enfermagem Hospitalar/psicologia , Pneumonia Viral/enfermagem , Adulto , Ansiedade/epidemiologia , COVID-19/epidemiologia , Estudos Transversais , Depressão/epidemiologia , Medo , Feminino , Humanos , Masculino , Pandemias , Pneumonia Viral/epidemiologia , Pneumonia Viral/virologia , República da Coreia/epidemiologia , SARS-CoV-2
13.
Radiology ; 297(3): 573-581, 2020 12.
Artigo em Inglês | MEDLINE | ID: mdl-32990512

RESUMO

Background Accurate identification of microvascular invasion (MVI) in hepatocellular carcinoma (HCC) before treatment is critical for selecting a proper treatment strategy. Purpose To evaluate the interobserver agreement and the diagnostic performance of the MRI assessment of MVI in HCC according to the level of radiologist experience. Materials and Methods This retrospective study included 100 patients with surgically confirmed HCCs smaller than 5 cm who underwent gadoxetic acid-enhanced MRI between 2013 and 2016. Eight postfellowship radiologists (four with 7-13 years of experience [more experienced] and four with 3-6 years of experience [less experienced]) evaluated four imaging features (nonsmooth tumor margin, irregular rim-like enhancement in the arterial phase, peritumoral arterial phase hyperenhancement, peritumoral hepatobiliary phase hypointensity) and assigned the possibility of MVI. Interobserver agreement was determined by using Fleiss κ statistics according to reviewer experience and tumor size (≤3 cm vs >3 cm). With reference standards of histopathologic specimens, the diagnostic performance in the identification of MVI was assessed by using receiver operating characteristic curve analysis. Results In 100 patients (mean age, 58 years ± 10 [standard deviation]; 70 men) with 100 HCCs (mean size, 2.8 cm ± 0.9), 39 (39%) HCCs had MVI. The overall interobserver agreement was fair to moderate for the imaging features and their combinations (κ = 0.38-0.47) and MVI probability (κ = 0.41; 95% confidence interval: 0.33, 0.45). More experienced reviewers demonstrated higher agreement in MVI probability than less experienced reviewers (κ = 0.55 vs 0.36, respectively; P = .002). Diagnostic performance of each reviewer was modest for MVI prediction (area under the receiver operating characteristic curve [AUC] range, 0.60-0.74). The AUCs for the diagnosis of MVI were lower for HCCs larger than 3 cm (range, 0.55-0.69) than for those less than or equal to 3 cm (range, 0.59-0.75). Conclusion Considerable interobserver variability exists in the assessment of microvascular invasion in hepatocellular carcinoma using MRI, even for more experienced radiologists. © RSNA, 2020 Online supplemental material is available for this article. See also the editorial by Tang in this issue.


Assuntos
Carcinoma Hepatocelular/patologia , Competência Clínica , Neoplasias Hepáticas/patologia , Imageamento por Ressonância Magnética/métodos , Invasividade Neoplásica/patologia , Adulto , Idoso , Meios de Contraste , Feminino , Gadolínio DTPA , Humanos , Masculino , Pessoa de Meia-Idade , Variações Dependentes do Observador , Valor Preditivo dos Testes , Estudos Retrospectivos
14.
J Vasc Surg ; 71(6): 2152-2160, 2020 06.
Artigo em Inglês | MEDLINE | ID: mdl-31901360

RESUMO

OBJECTIVE: Deep venous arterialization (DVA) is a technique aimed at providing an option for chronic limb-threatening ischemia patients with no options except amputation. In patients with no outflow distal targets permitting bypass, DVA involves creating a connection between a proximal arterial inflow and a distal venous outflow in conjunction with disruption of the vein valves in the foot. This permits blood flow to reach the foot and potentially to resolve rest pain or to assist in healing of a chronic wound. We aimed to provide an up-to-date review of DVA indications; to describe the open, percutaneous, and hybrid technique; to detail outcomes of each of the available techniques; and to relay the postoperative considerations for the DVA approach. METHODS: A literature review of relevant articles containing all permutations of the terms "deep venous arterialization" and "distal venous arterialization" was undertaken with the MEDLINE, Cochrane, and PubMed databases to find cases of open, percutaneous, and hybrid DVA in the peer-reviewed literature. The free text and Medical Subject Headings search terms included were "ischemia," "lower extremity," "venous arterialization," "arteriovenous reversal," and "lower limb salvage." Studies were primarily retrospective case series but did include two studies with matched controls. Recorded primary outcomes were patency, limb salvage, wound healing, amputation, and resolution of rest pain, with secondary outcomes of complication and overall mortality. Studies were excluded if there was insufficient discussion of technical details (graft type, target vein) or lack of reported outcome measure. RESULTS: Studies that met inclusion criteria (12 open, 3 percutaneous, 2 hybrid) were identified, reviewed, and summarized to compare technique, patient selection, and outcomes between open, percutaneous, and hybrid DVA. For open procedures, 1-year primary patency ranged from 44.4% to 87.5%; secondary patency was less reported but ranged from 55.6% at 1 year to 72% at 25-month follow-up. Limb salvage rates ranged from 25% to 100%, wound healing occurred in 28.6% to 100% of cases, and rest pain resolved in 11.9% to 100% across cohorts. For the endovascular approach, primary patency ranged from 28.6% to 40% at 6-month and 10-month follow-up. Limb salvage rates ranged from 60% to 71%, with rates of major amputation ranging from 20% to 28.5%. CONCLUSIONS: This review provides an up-to-date review of DVA indications, description of various DVA techniques, patient selection associated with each approach, and outcomes for each technique.


Assuntos
Pé/irrigação sanguínea , Isquemia/cirurgia , Salvamento de Membro , Doença Arterial Periférica/cirurgia , Enxerto Vascular , Amputação Cirúrgica , Doença Crônica , Humanos , Isquemia/diagnóstico por imagem , Isquemia/mortalidade , Isquemia/fisiopatologia , Salvamento de Membro/efeitos adversos , Salvamento de Membro/mortalidade , Doença Arterial Periférica/diagnóstico por imagem , Doença Arterial Periférica/mortalidade , Doença Arterial Periférica/fisiopatologia , Recuperação de Função Fisiológica , Fatores de Risco , Fatores de Tempo , Resultado do Tratamento , Enxerto Vascular/efeitos adversos , Enxerto Vascular/mortalidade , Grau de Desobstrução Vascular , Cicatrização
15.
J Prosthet Dent ; 123(3): 384-388, 2020 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-31307802

RESUMO

During production of an immediate interim implant-supported fixed restoration with interim cylinders, the formation of an access hole in the dentures is critical. Traditional access hole formation involves repeated prosthesis insertion and removal in the oral cavity, primarily through trial and error, to adjust the hole position and size. The presented technique simulates the interim cylinder position based on the healing abutment position, enabling confirmation of the access hole position and ensuring more precise seating of the interim implant-supported fixed restoration.


Assuntos
Implantes Dentários , Planejamento de Prótese Dentária , Prótese Dentária Fixada por Implante , Dentaduras
16.
J Prosthet Dent ; 123(3): 531-534, 2020 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-31307800

RESUMO

To simulate the current oral status of patients, including maxillofacial defects, the digital method described uses a method based on multisource data. These include data recorded from scans made with and without wearing an obturator and data obtained by scanning the surgical or interim obturator. This method eliminates the need for preliminary impressions and complex border-molding steps during the process of creating a definitive obturator, thereby greatly simplifying the fabrication process.


Assuntos
Implantes Dentários , Obturadores Palatinos , Humanos , Boca
17.
Regul Toxicol Pharmacol ; 109: 104485, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-31568817

RESUMO

D-allulose is considered an ideal substitute for sucrose, because it has 70% of the sweetness of sucrose and ultra-low energy. Chemical and biotechnological methods have been developed to produce Dallulose from D-fructose because D-allulose exists in extremely small quantities in nature. In this study, we performed a 90-day repeated oral dose toxicity test on rats using D-allulose produced from Microbacterium foliorum-a non-GMO species isolated from salad ginseng-in dosages of 0, 1250, 2500 and 5000 mg/kg/day. We developed a toxicity determination criterion based on the significant change caused by the administration of the substance to estimate the NOEL, NOAEL, and LOAEL of the substance applied in this study. This test found only minor compound-related changes in both male and female rats in the high dose group and no important compound-related changes. Thus, we determined the NOAEL of Dallulose in both sexes to be 5,000 mg/kg/day. This study's finding of a NOAEL of 5,000 mg/kg/day should ensure that D-allulose produced from Microbacterium foliorum is classified as a safe and ordinary substance.


Assuntos
Actinobacteria/enzimologia , Frutose/toxicidade , Edulcorantes/toxicidade , Testes de Toxicidade Crônica , Administração Oral , Animais , Feminino , Frutose/administração & dosagem , Masculino , Microbacterium , Nível de Efeito Adverso não Observado , Ratos , Edulcorantes/administração & dosagem
18.
Metabolomics ; 14(7): 99, 2018 07 11.
Artigo em Inglês | MEDLINE | ID: mdl-30830380

RESUMO

INTRODUCTION: In recent years, growers have used various production types, including high-tunnel systems, to increase the yield of tomatoes (Lycopersicon esculentum). However, the effect of high-tunnel cultivation, in comparison to conventional open-field production, on aroma and flavor volatiles is not fully understood. OBJECTIVES: To optimize the extraction and quantification conditions for the analysis of tomato volatiles using headspace solid phase microextraction (HS-SPME) coupled with gas chromatography-mass spectrometry (GC-MS), and study the effect of production systems on volatile profiles using metabolomics approach. METHODS: The HS-SPME conditions were optimized for extraction and GC-MS was used to quantify the volatiles from four tomato varieties grown in open-field and high-tunnel systems. Univariate and multivariate analyses were performed to identify the influence of production system on tomato volatiles. RESULTS AND CONCLUSIONS: The extraction of 2 g tomato samples at 60 °C for 45 min using divinylbenzene/carboxen/polydimethylsiloxane (DVB/CAR/PDMS) fiber gave the maximum amounts of volatiles. This optimized method was used to identify and quantify 41 volatiles from four tomato varieties. The levels of ß-damascenone were higher in the high-tunnel tomatoes and geranylacetone was higher in open-field tomatoes. These two volatile compounds could be considered as biomarkers for tomatoes grown in high-tunnel and open-field production systems. This study is the first report comparing volatiles in tomatoes grown in high-tunnel and open-field conditions, and our results confirmed that there is a critical need to adopt biomarker-specific production systems to improve the nutritional and organoleptic properties of tomatoes.


Assuntos
Metabolômica , Solanum lycopersicum/química , Microextração em Fase Sólida , Compostos Orgânicos Voláteis/análise , Biomarcadores/análise , Cromatografia Gasosa-Espectrometria de Massas
19.
J Obstet Gynaecol Res ; 44(6): 1100-1106, 2018 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-29673000

RESUMO

AIM: We investigated the effect of insemination timing on pregnancy outcomes in intrauterine insemination (IUI) cycles. METHODS: This is a retrospective study of 411 IUI cycles performed with a diagnosis of unexplained infertility and male factor infertility. The cycles were divided according to the interval between insemination and ovulation: ≤36 h, 36-37 h, 37-38 h and >38 h. The overall pregnancy rate, chemical pregnancy rate and clinical pregnancy rate were compared. We also analyzed the association between pregnancy outcomes and clinical characteristics, including age, duration of infertility, sperm concentration, body mass index (BMI), anti-Müllerian hormone (AMH) and number of mature follicles at ovulation. RESULTS: There were no differences regarding age, duration of infertility, BMI, AMH, sperm concentration and number of mature follicles between different IUI timing groups. Sperm morphology was significantly lower in ≤36 h group (5.3 ± 1.4) compared to 36-37 h, 37-38 h and >38 h (6.3 ± 2.5 vs 6.5 ± 2.7 vs 6.5 ± 3.5, P = 0.004) groups. The ≤36 h group showed lowest total pregnancy rate (5.0%) compared to other IUI timings (21.8% vs 24.8% vs 20.0%, P = 0.05). Multivariate analysis showed that sperm morphology was associated with pregnancy in 36-37 h (odd ratio 1.42, 95% confidence interval 1.03-1.95, P = 0.02). CONCLUSION: Insemination at least 36 h after ovulation is associated with increased pregnancy rate compared to IUIs performed ≤36 h following ovulation.


Assuntos
Infertilidade/epidemiologia , Infertilidade/terapia , Inseminação Artificial/estatística & dados numéricos , Inseminação Artificial/normas , Taxa de Gravidez , Análise do Sêmen , Adulto , Fatores Etários , Feminino , Humanos , Masculino , Gravidez , Contagem de Espermatozoides , Motilidade dos Espermatozoides/fisiologia , Espermatozoides/anormalidades , Fatores de Tempo
20.
J Clin Nurs ; 27(13-14): 2795-2803, 2018 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-29399909

RESUMO

AIMS AND OBJECTIVE: To examine the effects of active patient participation in the management of daily nursing goal on surgical patient recovery. BACKGROUND: Nursing processes involving patient participation enable nursing interventions solely based on individual needs and expectations. This permits the establishment of nurse-patient treatment goals and supports permanent and effective nursing interventions through evaluation activities. DESIGN: A quasi-experiment that relies on a nonequivalent pretest-post-test design for the control group. METHODS: A nursing intervention involving patient participation was applied to patients who underwent digestive cancer surgery in a surgical ward in the Republic of Korea. A daily goals sheet for patient participation was developed. Twenty-nine patients in the experimental group received the intervention every day from postoperative days 1-7 through the daily goals sheet. Data were collected on recovery in mobility, recovery of bowel movements, peak expiratory flow rate and pain and resilience after the experimental intervention. The control group contained 27 patients who were provided with routine nursing care alone. RESULTS: The daily nursing goal management group showed more rapid recovery in bowel movement, higher peak expiratory flow rate and lower pain scores than the control group. The daily nursing goal management group also had significantly higher resilience than the control group. CONCLUSIONS: Daily nursing goal management is an effective nursing intervention for improving function recovery and resilience in surgical patients. RELEVANCE TO CLINICAL PRACTICE: Patient participation in daily nursing goal management is an effective nursing intervention applicable to nurse-patient treatment goals and supports permanent and effective nursing interventions through evaluation activities.


Assuntos
Objetivos , Relações Enfermeiro-Paciente , Cuidados de Enfermagem/métodos , Recursos Humanos de Enfermagem Hospitalar/psicologia , Participação do Paciente , Pacientes/psicologia , Enfermagem Perioperatória/métodos , Recuperação de Função Fisiológica , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Período Pós-Operatório , República da Coreia
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