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1.
Sci Rep ; 14(1): 10833, 2024 05 12.
Artigo em Inglês | MEDLINE | ID: mdl-38734835

RESUMO

Our aim was to develop a machine learning-based predictor for early mortality and severe intraventricular hemorrhage (IVH) in very-low birth weight (VLBW) preterm infants in Taiwan. We collected retrospective data from VLBW infants, dividing them into two cohorts: one for model development and internal validation (Cohort 1, 2016-2021), and another for external validation (Cohort 2, 2022). Primary outcomes included early mortality, severe IVH, and early poor outcomes (a combination of both). Data preprocessing involved 23 variables, with the top four predictors identified as gestational age, birth body weight, 5-min Apgar score, and endotracheal tube ventilation. Six machine learning algorithms were employed. Among 7471 infants analyzed, the selected predictors consistently performed well across all outcomes. Logistic regression and neural network models showed the highest predictive performance (AUC 0.81-0.90 in both internal and external validation) and were well-calibrated, confirmed by calibration plots and the lowest two mean Brier scores (0.0685 and 0.0691). We developed a robust machine learning-based outcome predictor using only four accessible variables, offering valuable prognostic information for parents and aiding healthcare providers in decision-making.


Assuntos
Recém-Nascido Prematuro , Recém-Nascido de muito Baixo Peso , Aprendizado de Máquina , Humanos , Recém-Nascido , Feminino , Masculino , Estudos Retrospectivos , Taiwan/epidemiologia , Lactente , Prognóstico , Hemorragia Cerebral/mortalidade , Idade Gestacional , Hemorragia Cerebral Intraventricular/mortalidade , Hemorragia Cerebral Intraventricular/epidemiologia , Mortalidade Infantil , Peso ao Nascer , Doenças do Prematuro/mortalidade
2.
J Vis ; 24(5): 15, 2024 May 01.
Artigo em Inglês | MEDLINE | ID: mdl-38814934

RESUMO

Temporal asynchrony is a cue for the perceptual segregation of spatial regions. Past research found attribute invariance of this phenomenon such that asynchrony induces perceptual segmentation regardless of the changing attribute type, and it does so even when asynchrony occurs between different attributes. To test the generality of this finding and obtain insights into the underlying computational mechanism, we compared the segmentation performance for changes in luminance, color, motion direction, and their combinations. Our task was to detect the target quadrant in which a periodic alternation in attribute was phase-delayed compared to the remaining quadrants. When stimulus elements made a square-wave attribute change, target detection was not clearly attribute invariant, being more difficult for motion direction change than for luminance or color changes and nearly impossible for the combination of motion direction and luminance or color. We suspect that waveform mismatch might cause anomalous behavior of motion direction since a square-wave change in motion direction is a triangular-wave change in the spatial phase (i.e., a second-order change in the direction of the spatial phase change). In agreement with this idea, we found that the segregation performance was strongly affected by the waveform type (square wave, triangular wave, or their combination), and when this factor was controlled, the performance was nearly, though not perfectly, invariant against attribute type. The results were discussed with a model in which different visual attributes share a common asynchrony-based segmentation mechanism.


Assuntos
Percepção de Movimento , Estimulação Luminosa , Percepção Espacial , Humanos , Percepção de Movimento/fisiologia , Estimulação Luminosa/métodos , Percepção Espacial/fisiologia , Percepção de Cores/fisiologia , Sinais (Psicologia) , Adulto
3.
Environ Toxicol ; 39(7): 3980-3990, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38597583

RESUMO

Our previous research identified interleukin-4 (IL-4) as a key regulator of glucose/lipid metabolism, circulatory leptin levels, and insulin action, suggesting its potential as a therapeutic target for obesity and related complications. This study aimed to further elucidate the role of IL-4 in regulating hypothalamic appetite-controlling neuropeptides using leptin dysfunctional Leptin145E/145E mice as the experimental model. IL-4 significantly reduces body weight, food intake, and serum glucose levels. Our data demonstrated that IL-4 exhibits multiple functions in regulating hypothalamic appetite control, including downregulating orexigenic agouti-related peptide and neuropeptide Y levels, promoting expression of anorexigenic proopiomelanocortin, alleviating microenvironmental hypothalamic inflammation, enhancing leptin and insulin pathway, and attenuating insulin resistance. Furthermore, IL-4 promotes uncoupling protein 1 expression of white adipose tissue (WAT), suggesting its role in triggering WAT-beige switch. In summary, this study uncovers novel function of IL-4 in mediating food-intake behaviors and metabolic efficiency by regulating hypothalamic appetite-control and WAT browning activities. These findings support the therapeutic potential of targeting hypothalamic inflammation and reducing adiposity through IL-4 intervention for tackling the pandemic increasing prevalence of obesity and associated metabolic disorders.


Assuntos
Hipotálamo , Insulina , Interleucina-4 , Leptina , Transdução de Sinais , Animais , Hipotálamo/efeitos dos fármacos , Hipotálamo/metabolismo , Interleucina-4/metabolismo , Camundongos , Transdução de Sinais/efeitos dos fármacos , Leptina/metabolismo , Insulina/metabolismo , Proteínas Proto-Oncogênicas c-akt/metabolismo , Masculino , Janus Quinases/metabolismo , Regulação do Apetite/efeitos dos fármacos , Apetite/efeitos dos fármacos , Fatores de Transcrição STAT/metabolismo , Ingestão de Alimentos/efeitos dos fármacos , Tecido Adiposo Branco/efeitos dos fármacos , Tecido Adiposo Branco/metabolismo
4.
RMD Open ; 10(2)2024 Apr 18.
Artigo em Inglês | MEDLINE | ID: mdl-38637112

RESUMO

OBJECTIVES: This study aimed to develop a predictive model using polygenic risk score (PRS) to forecast renal outcomes for adult systemic lupus erythematosus (SLE) in a Taiwanese population. METHODS: Patients with SLE (n=2782) and matched non-SLE controls (n=11 128) were genotyped using Genome-Wide TWB 2.0 single-nucleotide polymorphism (SNP) array. PRS models (C+T, LDpred2, Lassosum, PRSice-2, PRS-continuous shrinkage (CS)) were constructed for predicting SLE susceptibility. Logistic regression was assessed for C+T-based PRS association with renal involvement in patients with SLE. RESULTS: In the training set, C+T-based SLE-PRS, only incorporating 27 SNPs, outperformed other models with area under the curve (AUC) values of 0.629, surpassing Lassosum (AUC=0.621), PRSice-2 (AUC=0.615), LDpred2 (AUC=0.609) and PRS-CS (AUC=0.602). Additionally, C+T-based SLE-PRS demonstrated consistent predictive capacity in the testing set (AUC=0.620). Individuals in the highest quartile exhibited earlier SLE onset (39.06 vs 44.22 years, p<0.01), higher Systemic Lupus Erythematosus Disease Activity Index scores (3.00 vs 2.37, p=0.04), elevated risks of renal involvement within the first year of SLE diagnosis, including WHO class III-IV lupus nephritis (OR 2.36, 95% CI 1.47 to 3.80, p<0.01), estimated glomerular filtration rate <60 mL/min/1.73m2 (OR 1.49, 95% CI 1.18 to 1.89, p<0.01) and urine protein-to-creatinine ratio >150 mg/day (OR 2.07, 95% CI 1.49 to 2.89, p<0.01), along with increased seropositivity risks, compared with those in the lowest quartile. Furthermore, among patients with SLE with onset before 50 years, the highest PRS quartile was significantly associated with more serious renal diseases within the first year of SLE diagnosis. CONCLUSIONS: PRS of SLE is associated with earlier onset, renal involvement within the first year of SLE diagnosis and seropositivity in Taiwanese patients. Integrating PRS with clinical decision-making may enhance lupus nephritis screening and early treatment to improve renal outcomes in patients with SLE.


Assuntos
Lúpus Eritematoso Sistêmico , Nefrite Lúpica , Adulto , Humanos , Nefrite Lúpica/diagnóstico , Nefrite Lúpica/epidemiologia , Nefrite Lúpica/genética , Estratificação de Risco Genético , Lúpus Eritematoso Sistêmico/complicações , Lúpus Eritematoso Sistêmico/diagnóstico , Lúpus Eritematoso Sistêmico/epidemiologia , Rim , Genótipo
5.
Int Emerg Nurs ; 73: 101402, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38310762

RESUMO

BACKGROUND: Children can become anxious when undergoing emergency medical treatment. Therefore, emergency departments should be child friendly. This study explored emergency nurses' perspectives on children's needs during emergency care. METHOD: This qualitative study employed purposive sampling to recruit 17 emergency nurses from 3 medical centers in northern and central Taiwan. Individual interviews were conducted between January and August 2021. Data were analyzed through qualitative content analysis. RESULTS: The participants had 2-23 years of experience in caring for children in emergency departments. We identified 208 unique meaning units in the interview data, 79 of which were related to child-friendly emergency care. These were classified into 42 codes across 6 categories and 27 subcategories. The six categories were timely comfort, emotional care, frontline safety, emergency response, human resources support, and treatment efficiency. CONCLUSION: Emergency nurses have professional competencies, play a crucial role as care providers for children in the emergency department, and ensure the comfort and safety of children seeking treatment. The categories related to child-friendly emergency care identified in this study can serve as a basis for developing child-friendly care emergency guidelines.


Assuntos
Serviço Hospitalar de Emergência , Enfermeiras e Enfermeiros , Humanos , Pesquisa Qualitativa , Hospitais , Taiwan
6.
Resuscitation ; 196: 110120, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38266768

RESUMO

BACKGROUND: Early recognition of cardiac arrest and early initiation of bystander cardiopulmonary resuscitation can increase the survival of patients with out-of-hospital cardiac arrest (OHCA). We compared dispatcher-assisted cardiopulmonary resuscitation (DACPR) effectiveness before and after using different communication models in the dispatching center. METHOD: We analyzed dispatch recordings of non-trauma origin OHCA cases received by the Taichung dispatch center between May 1 to September 30, 2021, and November 1, 2021, to March 31, 2022. The dispatchers underwent an 8-hour training intervention consisting of targeted education using a new communication model for DACPR. Several outcome measures were evaluated, including the sustained return of spontaneous circulation and the time to first chest compression. RESULTS: We included 640 cases in the preintervention group and 580 cases in the postintervention group. The return of spontaneous circulation (ROSC) rate, the time to first chest compression, and good neurological outcome were significantly improved in the postintervention group (20.9% vs. 31.0%, p < 0.001;168 seconds vs. 151 seconds, p = 0.004; 2.8% vs. 5.3%, p = 0.024, respectively). In subgroup analyses, the intervention was related to a statistical improvement in ROSC rate among patients whose caller was a family member (18.7% vs. 31.4%, p < 0.001). Among patients whose caller was female, both ROSC and good neurological outcome significantly improved after the intervention (19.8% vs. 36.6%, p < 0.001; 2.7% vs. 7.5%, p = 0.006, respectively). There was a statistical difference between the pre-intervention and post-intervention group with respect to ROSC rate among patients whose caller was family (the adjusted odds ratio:1.78, 95% CI: 0.59-1.25], p < 0.001.) or female (the adjusted odds ratio:3.18,95% CI: 1.77-5.70], p = 0.008.) in the multivariable regression model. CONCLUSION: The new communication model has enhanced the effectiveness of DACPR in terms of the ROSC rate, particularly when the caller was a family member or female, leading to improved rates of ROSC and favorable neurological outcomes.


Assuntos
Reanimação Cardiopulmonar , Parada Cardíaca Extra-Hospitalar , Humanos , Feminino , Comunicação Persuasiva , Comunicação , Cognição , Parada Cardíaca Extra-Hospitalar/terapia
7.
Viruses ; 16(1)2024 01 18.
Artigo em Inglês | MEDLINE | ID: mdl-38257842

RESUMO

This study aimed to explore the current evidence on preventing blood-borne virus infections among people who inject drugs (PWID). We conducted a comprehensive search across three databases (PubMed, Embase, Cochrane Library) for relevant articles published in English between 2014 and 2023. We followed the Preferred Reporting Items for Systematic Reviews and Meta Analysis (PRISMA) guidelines, assessed the quality of the paper using the revised Cochrane Risk of Bias Tool (ROB 2), and conducted a meta-analysis using RevMan 5.3. Completing the harm reduction program (HRP) participation and receiving all three vaccine doses resulted in a 28% reduction in the risk of HBV infection (OR: 0.72, 95% CI: 0.37-1.42). Various interventions increased the willingness of PWIDs to undergo HCV treatment (OR: 5.91, 95% CI: 2.46-14.24) and promoted treatment adherence (OR: 15.04, 95% CI: 2.80-80.61). Taking PrEP, participating in HRP, and modifying risky behaviors were associated with a 33% reduction in the risk of HIV infection (OR: 0.67, 95% CI: 0.61-0.74). Conducting referrals, providing counseling, and implementing antiretroviral therapy resulted in a 44% reduction in the risk of viral transmission (OR: 0.56, 95% CI: 0.47-0.66). Co-infection may potentially compromise effectiveness, so it is important to consider drug resistance.


Assuntos
Coinfecção , Usuários de Drogas , Infecções por HIV , Hepatite Viral Humana , Humanos , Infecções por HIV/tratamento farmacológico , Infecções por HIV/prevenção & controle , Coinfecção/prevenção & controle , Bases de Dados Factuais
8.
Work ; 77(1): 231-241, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-37638463

RESUMO

BACKGROUND: The number of survivors of head and neck cancer (HNC) has steadily increased due to major advances in cancer care. However, cancer survivors who experience job loss face different challenges regarding return to work (RTW). Relatively few studies have integrated the experience encountered by patients. OBJECTIVE: This mixed-methods study aimed to explore the experience and challenges of RTW in patients with HNC. METHODS: Data were collected with structured questionnaires (n = 120) and semi-structured face-to-face interviews (n = 12). RESULTS: Relationships were found between patient's physical status, perceived stress, and social support. Patients who continued work, or not, had significant differences in reported physical function and stress. Four themes emerged from the qualitative data, including the perceived meaning of work, challenges for RTW, preparing for RTW, and social support. After diagnosis and treatment, patients perceived the meaning of work, such as personal value, responsibility, and financial need. They faced many challenges to RTW, including declining physical strength, workload, schedule rearrangement, speech difficulty, and changed appearance. In order to RTW, they prepared extensively and needed support from family and friends. CONCLUSION: This study revealed the experiences and challenges of RTW patients with HNC. The results allowed us to identify patients' concerns and ways that healthcare providers could improve the RTW process. Future studies may develop tailored approaches for RTW in healthcare and government policies.


Assuntos
Sobreviventes de Câncer , Neoplasias de Cabeça e Pescoço , Humanos , Retorno ao Trabalho , Pesquisa Qualitativa , Sobreviventes
9.
J Gastroenterol Hepatol ; 39(2): 305-311, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38058101

RESUMO

BACKGROUND AND AIM: A large genetic effect of a novel gallstone-associated genetic variant, the hepatocyte nuclear factor 4α (HNF4A) rs1800961 polymorphism, has been identified through recent genome-wide association studies. However, this effect has not been validated in Asian populations. We investigated the association between the rs1800961 variant and gallstones among a Taiwanese population. METHODS: A total of 20 405 participants aged between 30 and 70 years voluntarily enrolled in the Taiwan Biobank. Self-report questionnaires, physical examinations, biochemical tests, and genotyping were used for analysis. The association of the HNF4A rs1800961 variant and other metabolic risks with gallstone disease was analyzed using multiple logistic regression models. RESULTS: The minor T allele of HNF4A rs1800961 was associated with an increased risk of gallstone, and the association remained significant even after adjustment for other risk factors including age, body mass index (BMI), diabetes, hyperlipidemia, hypertension, and cigarette smoking (adjusted odds ratio [OR] = 1.90, 95% confidence interval [CI] = 1.31 to 2.75) in male participants. When further stratified by BMI and age, the lithogenic effect was the most significant in male participants with obesity (adjusted OR = 3.55, 95% CI = 1.92 to 6.56) and who were younger (adjusted OR = 2.45, 95% CI = 1.49 to 4.04). CONCLUSION: The novel gallstone-associated HNF4A rs1800961 variant was associated with the risk of gallstone in the Taiwanese men. Screening for the rs1800961 polymorphism may be particularly useful in assessing the risk of gallstone formation in younger or obese men.


Assuntos
Cálculos Biliares , Humanos , Masculino , Adulto , Pessoa de Meia-Idade , Idoso , Cálculos Biliares/etiologia , Estudo de Associação Genômica Ampla , Fatores de Risco , Obesidade/epidemiologia , Obesidade/genética , Obesidade/complicações , Fatores Nucleares de Hepatócito/genética , Fator 4 Nuclear de Hepatócito/genética
10.
PLoS Pathog ; 19(12): e1011891, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-38109416

RESUMO

Trichomonas vaginalis is a prevalent causative agent that causes trichomoniasis leading to uropathogenic inflammation in the host. The crucial role of the actin cytoskeleton in T. vaginalis cytoadherence has been established but the associated signaling has not been fully elucidated. The present study revealed that the T. vaginalis second messenger PIP2 is located in the recurrent flagellum of the less adherent isolate and is more abundant around the cell membrane of the adherent isolates. The T. vaginalis phosphatidylinositol-4-phosphate 5-kinase (TvPI4P5K) with conserved activity phosphorylating PI(4)P to PI(4, 5)P2 was highly expressed in the adherent isolate and partially colocalized with PIP2 on the plasma membrane but with discrete punctate signals in the cytoplasm. Plasma membrane PIP2 degradation by phospholipase C (PLC)-dependent pathway concomitant with increasing intracellular calcium during flagellate-amoeboid morphogenesis. This could be inhibited by Edelfosine or BAPTA simultaneously repressing parasite actin assembly, morphogenesis, and cytoadherence with inhibitory effects similar to the iron-depleted parasite, supporting the significance of PIP2 and iron in T. vaginalis colonization. Intriguingly, iron is required for the optimal expression and cell membrane trafficking of TvPI4P5K for in situ PIP2 production, which was diminished in the iron-depleted parasites. TvPI4P5K-mediated PIP2 signaling may coordinate with iron to modulate T. vaginalis contact-dependent cytolysis to influence host cell viability. These observations provide novel insights into T. vaginalis cytopathogenesis during the host-parasite interaction.


Assuntos
Parasitos , Trichomonas vaginalis , Animais , Cálcio/metabolismo , Citoesqueleto de Actina , Ferro/metabolismo
11.
J Microbiol Immunol Infect ; 56(5): 1084-1097, 2023 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-37544808

RESUMO

BACKGROUND/PURPOSE(S): Human breastmilk (BM) is important for microbiome maturation in infants across different body sites. Streptococcus and Staphylococcus are considered universally predominant genera in the BM microbiota. However, whether the differential abundance of Streptococcus and Staphylococcus in BM can differentially affect microbiome maturation in infants remains unclear. METHODS: We recruited exclusively breastfeeding mothers from among the donors of the human milk bank established at National Cheng-Kung University Hospital. The donor mothers provided 35 BM samples at three months (3 M; before introducing children to complementary feeding) and 23 BM samples at six months (6 M; after introducing children to complementary feeding) postpartum. At both time points, samples from different body sites, including nasal swabs, oral swabs and stool, were collected from the mothers and their infants. RESULTS: Maternal BMI was inversely associated with coagulase-negative Staphylococcus (CoNS) abundance in breastmilk. Staphylococcus caprae representation in BM CoNS showed a negative correlation with Streptococcus abundance. Network analysis revealed that infants fed Staphylococcus-dominated BM had better gut and nasal microbiota networks than infants fed Streptococcus-abundant BM during early infancy. CONCLUSION: Our work suggests that maternal metabolic status plays a crucial role in Staphylococcus/Streptococcus competition in BM, which in turn can impact the development of the infant microbiota. Our microbiota co-occurrence network analysis might serve as a helpful bioinformatic tool to monitor microbiota maturation during early infancy.


Assuntos
Microbiota , Leite Humano , Feminino , Criança , Lactente , Humanos , Streptococcus , Mães
12.
Work ; 76(4): 1455-1463, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37393471

RESUMO

BACKGROUND: Sleep and mental health are very important in the aviation industry. Reports show that gender is one of the risk factors of insomnia, and most Asian flight attendants are female. Therefore, it is necessary to understand insomnia, and the correction to mental health among female flight attendants. OBJECTIVE: To investigate the prevalence of insomnia in female flight attendants and its association with mental health. METHODS: We used a cross-sectional design. We recruited 412 female flight attendants with more than 3 months of working experience. We collected the socio-demographic and work-related data, measured insomnia and mental health by the Athens Insomnia and Brief Symptom Rating Scales. Descriptive statistics, single-factor analysis of variance, Pearson's correlation analysis, and structural equation modeling were performed to analyze the relationships. RESULTS: There are 45.4% of female flight attendants having insomnia, and 24.8% had suspicious insomnia. The most considerable and serious insomnia problem was falling asleep (15.3%, 4.9%). Factors related to insomnia include smoking, drinking, family load (e.g., housekeeping and caring for family), economic stress and late-night/early morning workdays during last month. Also, insomnia had a direct association with mental health (T = 17.11, p < 0.001). CONCLUSION: We found that insomnia is negatively correlated with the above factors and mental health. We recommend that airline industries can run their sleep-education programs and provide relevant mental-health-promotion programs for flight attendants.


Assuntos
Aviação , Distúrbios do Início e da Manutenção do Sono , Humanos , Feminino , Masculino , Distúrbios do Início e da Manutenção do Sono/complicações , Distúrbios do Início e da Manutenção do Sono/epidemiologia , Saúde Mental , Estudos Transversais , Fatores de Risco
13.
Viruses ; 15(7)2023 07 16.
Artigo em Inglês | MEDLINE | ID: mdl-37515248

RESUMO

We developed a convenient method for amplifying the complete SARS-CoV-2 sequence using in-house RT-PCR without virus culture. Forty-one stored throat swabs and blood specimens were collected from eight SARS-CoV-2 infections at multiple time points. Total RNA was extracted using the QIAamp viral RNA mini kit and pooled for higher RNA levels. Only those positive specimens by commercial real-time RT-PCR (RT-qPCR) were selected and amplified by in-house RT-PCR for complete sequences, followed by sequencing. Phylogenetic trees and exploratory analyses were performed using MEGA 11 and Simplot 3.5.1 software. Swab samples had significantly higher total RNA concentrations than plasma (p < 0.01). Positive results were found mainly in swabs, but one was found in plasma. Successful gene amplification depended on Ct values (Ct < 38). A non-synonymous substitution was found in ORF1ab/Nsp3 (at NC045512.2 position 6312, C to A) and most spike protein mutations occurred in the S1 subunit (residues 14-685). The proposed method is time-saving and reliable for rapid genomic analysis. Increasing sample volume and pooling them for RNA extraction increases RNA concentration without culture. Combining nucleotide sequences from specific variable regions of the genome is more efficient than conventional methods.


Assuntos
COVID-19 , SARS-CoV-2 , Humanos , SARS-CoV-2/genética , Filogenia , Reação em Cadeia da Polimerase Via Transcriptase Reversa , Técnicas de Laboratório Clínico/métodos , Teste para COVID-19 , RNA Viral/genética , RNA Viral/análise , Sensibilidade e Especificidade
14.
Front Plant Sci ; 14: 1171957, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37324680

RESUMO

To sustain normal growth and allow rapid responses to environmental cues, plants alter the plasma membrane protein composition under different conditions presumably by regulation of delivery, stability, and internalization. Exocytosis is a conserved cellular process that delivers proteins and lipids to the plasma membrane or extracellular space in eukaryotes. The octameric exocyst complex contributes to exocytosis by tethering secretory vesicles to the correct site for membrane fusion; however, whether the exocyst complex acts universally for all secretory vesicle cargo or just for specialized subsets used during polarized growth and trafficking is currently unknown. In addition to its role in exocytosis, the exocyst complex is also known to participate in membrane recycling and autophagy. Using a previously identified small molecule inhibitor of the plant exocyst complex subunit EXO70A1, Endosidin2 (ES2), combined with a plasma membrane enrichment method and quantitative proteomic analysis, we examined the composition of plasma membrane proteins in the root of Arabidopsis seedlings, after inhibition of the ES2-targetted exocyst complex, and verified our findings by live imaging of GFP-tagged plasma membrane proteins in root epidermal cells. The abundance of 145 plasma membrane proteins was significantly reduced following short-term ES2 treatments and these likely represent candidate cargo proteins of exocyst-mediated trafficking. Gene Ontology analysis showed that these proteins play diverse functions in cell growth, cell wall biosynthesis, hormone signaling, stress response, membrane transport, and nutrient uptake. Additionally, we quantified the effect of ES2 on the spatial distribution of EXO70A1 with live-cell imaging. Our results indicate that the plant exocyst complex mediates constitutive dynamic transport of subsets of plasma membrane proteins during normal root growth.

15.
Microbiol Spectr ; 11(4): e0059623, 2023 08 17.
Artigo em Inglês | MEDLINE | ID: mdl-37310229

RESUMO

Cytoadherence and migration are crucial for pathogens to establish colonization in the host. In contrast to a nonadherent isolate of Trichomonas vaginalis, an adherent one expresses more actin-related machinery proteins with more active flagellate-amoeboid morphogenesis, amoeba migration, and cytoadherence, activities that were abrogated by an actin assembly blocker. By immunoprecipitation coupled with label-free quantitative proteomics, an F-actin capping protein (T. vaginalis F-actin capping protein subunit α [TvFACPα]) was identified from the actin-centric interactome. His-TvFACPα was detected at the barbed end of a growing F-actin filament, which inhibited elongation and possessed atypical activity in binding G-actin in in vitro assays. TvFACPα partially colocalized with F-actin at the parasite pseudopod protrusion and formed a protein complex with α-actin through its C-terminal domain. Meanwhile, TvFACPα overexpression suppressed F-actin polymerization, amoeboid morphogenesis, and cytoadherence in this parasite. Ser2 phosphorylation of TvFACPα enriched in the amoeboid stage of adhered trophozoites was reduced by a casein kinase II (CKII) inhibitor. Site-directed mutagenesis and CKII inhibitor treatment revealed that Ser2 phosphorylation acts as a switching signal to alter TvFACPα actin-binding activity and the consequent actin cytoskeleton behaviors. Through CKII signaling, TvFACPα also controls the conversion of adherent trophozoites from amoeboid migration to the flagellate form with axonemal motility. Together, CKII-dependent Ser2 phosphorylation regulates TvFACPα binding to actin to fine-tune cytoskeleton dynamics and drive crucial behaviors underlying host colonization by T. vaginalis. IMPORTANCE Trichomoniasis is one of the most prevalent nonviral sexually transmitted diseases. T. vaginalis cytoadherence to urogenital epithelium cells is the first step in the colonization of the host. However, studies on the mechanisms of cytoadherence have focused mainly on the role of adhesion molecules, and their effects are limited when analyzed by loss- or gain-of-function assays. This study proposes an extra pathway in which the actin cytoskeleton mediated by a capping protein α-subunit may play roles in parasite morphogenesis, cytoadherence, and motility, which are crucial for colonization. Once the origin of the cytoskeleton dynamics could be manipulated, the consequent activities would be controlled as well. This mechanism may provide new potential therapeutic targets to impair this parasite infection and relieve the increasing impact of drug resistance on clinical and public health.


Assuntos
Trichomonas vaginalis , Trichomonas vaginalis/metabolismo , Actinas/metabolismo , Citoesqueleto/metabolismo , Citoesqueleto de Actina/metabolismo , Proteínas de Capeamento de Actina/metabolismo
16.
Hu Li Za Zhi ; 70(3): 6-11, 2023 Jun.
Artigo em Chinês | MEDLINE | ID: mdl-37259645

RESUMO

Emergency nurses, especially when caring for pediatric patients, typically establish relationships with their patients under hectic and busy conditions. Thus, these nurses often rely on semi-coaxing / slightly stressful methods to quickly prepare patients to undergo necessary medical procedures. However these approaches cause tense relationships. To establish friendly bridges with pediatric patients, emergency nurses should adopt sincere and caring approaches. An approach based on Swanson's caring theory for applying child-friendly healthcare in the emergency department is proposed in this article. It is important to establish a friendly bridge with pediatric patients with emergency treatment needs and their families in a sincere and caring manner; to understand the needs of these children and their families when seeking medical treatment; to be present, listen, and respond to these patients and provide decision-making power when appropriate; and to provide professional care and method knowledge to empower families to care for their children. Accomplishing this may be expected to improve trust in both children with emergency medical needs and their families and thus decrease their anxiety, negative emotions, and stress. We hope that reflecting on the relationship between nurses and patients may further promote the practice of friendly healthcare in pediatric emergency departments.


Assuntos
Serviço Hospitalar de Emergência , Relações Enfermeiro-Paciente , Humanos , Criança
17.
Headache ; 63(4): 539-548, 2023 04.
Artigo em Inglês | MEDLINE | ID: mdl-37036129

RESUMO

BACKGROUND: Periodontal disease may drive a systemic inflammatory response that triggers migraine; however, the association between periodontal disease and migraine has rarely been investigated in a community-based setting. METHODS: This cross-sectional study included 66,109 participants aged 30 to 70 years from Taiwan Biobank (TWB). A structured questionnaire was administered to participants, who were also subjected to whole-genome single nucleotide polymorphism genotyping using the customized Axiom-TWB array. To identify subjects with periodontal disease and migraine, the computerized linkage of data obtained from TWB and the National Health Insurance Research Database was performed. Participants were evaluated for their genetic predisposition to migraine using a polygenic risk score. We examined and estimated the magnitude of associations between periodontal disease and migraine. RESULTS: In this study, 4618 (4618/66,109; 7%) participants with migraine and 61,491 (61,491/66,109; 83%) participants without migraine were included. Participants with migraine exhibited a higher prevalence of periodontal disease than participants without migraine (4324/4618; 94% vs. 56,036/61,491; 91%). A significant positive association was observed between periodontal disease and migraine, with an adjusted odds ratio (ORadj ) of 1.40 (95% confidence interval [CI] = 1.24-1.59; p < 0.001). The association remained consistent even after excluding participants with other comorbidities (ORadj  = 1.34; 95% CI = 1.16-1.55; p < 0.001). Moreover, the positive association between periodontal disease and migraine remained significant across the subgroups of age, sex, other comorbidities, and classified polygenic risk scores of migraine, with the ORadj ranging from 1.26 to 1.78. CONCLUSIONS: A significant positive association was observed between periodontal disease and migraine. Future studies need to explore the biological mechanisms of how periodontal disease might affect migraine.


Assuntos
Transtornos de Enxaqueca , Humanos , Estudos Transversais , Transtornos de Enxaqueca/epidemiologia , Transtornos de Enxaqueca/genética , Comorbidade , Fatores de Risco , Predisposição Genética para Doença
18.
Obes Surg ; 33(5): 1616-1619, 2023 05.
Artigo em Inglês | MEDLINE | ID: mdl-36856990

RESUMO

BACKGROUND: Bariatric surgery has actually focused not only on obesity but also more on the improvements or remission of the metabolic diseases. Therefore, revisional surgery is indicated for patients with poor response to the primary bariatric surgery to control weight and obesity-associated medical conditions. METHOD: In this video report, the patient was a 27-year-old Asian female with an initial BMI of 36.5 kg/m2 and poorly controlled type 2 diabetes (HbA1c: 11.9%). She underwent primary bariatric surgery of laparoscopic duodenal-jejunal bypass with sleeve gastrectomy (DJB-SG) in June 2019. She had a nadir BMI of 28.8 kg/m2 (corresponding body weight of 72 kg) in June 2020. However, she regained weight (BMI: 34 kg/m2) and had a relapse of diabetes with an HbA1c of 12.0% at the time of consultation for revisional bariatric surgery (RBS) in September 2022. After a multidisciplinary team evaluation, laparoscopic procedures of one anastomosis gastric bypass (OAGB) with resizing the gastric tube, removal of duodenal-jejunal anastomosis, and lengthening of the biliopancreatic limb were performed. RESULTS: The operative time was 186 min and blood loss was 50 ml. There were no intraoperative or postoperative complications. The patient had an uneventful postoperative course and was discharged on postoperative day 5. At the 3-month follow-up after RBS, the patient had lost 13 kg (weight dropped from 85 to 72 kg) and achieve remission of diabetes with HbA1c of 5.7%. CONCLUSION: Laparoscopic OAGB is technically feasible and practical as a revisional procedure for poor response of DJB-SG.


Assuntos
Diabetes Mellitus Tipo 2 , Derivação Gástrica , Laparoscopia , Obesidade Mórbida , Humanos , Feminino , Adulto , Derivação Gástrica/métodos , Obesidade Mórbida/cirurgia , Diabetes Mellitus Tipo 2/cirurgia , Hemoglobinas Glicadas , Obesidade/cirurgia , Reoperação/métodos , Gastrectomia/métodos , Estudos Retrospectivos , Resultado do Tratamento
19.
Nutrients ; 15(5)2023 Mar 04.
Artigo em Inglês | MEDLINE | ID: mdl-36904276

RESUMO

OBJECTIVE: To determine whether feeding progression patterns in the first eight postnatal weeks, depicted by clustering analysis of daily enteral feeding volume, are associated with longitudinal head-circumference (HC) growth and neurodevelopmental outcomes in extremely preterm (EP) infants. METHODS: 200 infants who were admitted at gestational ages 23-27 weeks between 2011 and 2018; survived to discharge; and underwent longitudinal HC growth measurements at birth, term-equivalent age (TEA), corrected age (CA) 6-month, 12-month, and 24-month; and neurodevelopmental assessment using the Bayley Scales of Infant Development at CA 24 months were included for analysis. RESULTS: kmlShape analysis identified two distinct enteral feeding progression patterns: fast progression in 131 (66%) infants and slow progression in 69 (34%) infants. Compared to the fast progression group, the slow progression group showed significantly lower daily enteral volumes after day 13, was older in postnatal age reaching full feeding, had a higher rate of Delta z scores of HC (zHC) < -1 (p < 0.001) between birth and TEA, and displayed lower longitudinal zHC from TEA to CA 24 months. The slow progression group also showed higher rates of microcephaly [42% vs. 16%, p < 0.001; adjusted odd ratio (aOR): 3.269, p = 0.001] and neurodevelopmental impairment (NDI) (38% vs. 19%, p = 0.007; aOR: 2.095, p = 0.035) at CA 24 months. For NDI, the model including feeding progression patterns showed a lower Akaike information criterion score and a better goodness of fit than the model that did not include feeding patterns. CONCLUSION: Characterizing feeding progression pattern may help identify EP infants at high-risk of head-size growth faltering and NDI at early childhood.


Assuntos
Nutrição Enteral , Lactente Extremamente Prematuro , Lactente , Criança , Recém-Nascido , Humanos , Pré-Escolar , Idade Gestacional , Hospitalização , Alta do Paciente
20.
J Microbiol Immunol Infect ; 56(3): 506-515, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-36967265

RESUMO

BACKGROUND: Understanding the neutralizing antibody (NAb) titer against COVID-19 over time is important to provide information for vaccine implementation. The longitudinal NAb titer over one year after SARS-CoV-2 infection is still unclear. The purposes of this study are to evaluate the duration of the neutralizing NAb titers in COVID-19 convalescents and factors associated with the titer positive duration. METHODS: A cohort study followed COVID-19 individuals diagnosed between 2020 and 2021 May 15th from the COVID-19 database from the Taiwan Centers for Disease Control. We analyzed NAb titers from convalescent SARS-CoV-2 individuals. We used generalized estimating equations (GEE) and a Cox regression model to summarize the factors associated with NAb titers against COVID-19 decaying in the vaccine-free population. RESULTS: A total of 203 convalescent subjects with 297 analytic samples were followed for a period of up to 588 days. Our study suggests that convalescent COVID-19 in individuals after more than a year and four months pertains to only 25% of positive titers. The GEE model indicates that longer follow-up duration was associated with a significantly lower NAb titer. The Cox regression model indicated the disease severity with advanced condition was associated with maintaining NAb titers (adjusted hazard ratio: 2.01, 95% CI: 1.11-3.63) and that smoking was also associated with higher risk of negative NAb titers (adjusted hazard ratio: 0.55, 95% CI: 0.33-0.92). CONCLUSIONS: Neutralizing antibody titers diminished after more than a year. The antibody titer response against SARS-CoV-2 in naturally convalescent individuals provides a reference for vaccinations.


Assuntos
COVID-19 , Humanos , SARS-CoV-2 , Estudos de Coortes , Taiwan/epidemiologia , Anticorpos Neutralizantes , Anticorpos Antivirais
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