RESUMO
BACKGROUND: Incorporating scientific research into undergraduate medical education is necessary for the quality of future health care. However, providing rigorous research training to a large number of medical students at one institution remains one of the major challenges. The authors studied the impact of a curriculum-based Research Training Program (RTP) for all undergraduate students at Zhejiang University School of Medicine (ZUSM) on research productivity and future research interests. METHODS: Medical students (n = 2,213) from ZUSM who completed the course of RTP between 2013 and 2020 were studied. The authors measured the academic performance, research publications, and research projects of students across years, and evaluated potential factors that contribute to student research productivity and increased interest in future research. RESULTS: Across the years, there was an increase in the number of student publications, a greater proportion of students with publications, and a greater proportion of projects involving three or more students (P < .01 for all). The academic performance of the course was associated with increased publications (P = .014), whereas overall satisfaction of the course (OR 2.07, 95% CI [1.39, 3.10], P < .001), Skill Composite Score (SCS) (OR 1.70, 95% CI [1.16, 2.50], P = .007), and male gender (OR 1.50, 95% CI [1.06, 2.12], P = .022) were associated with increased future research interests. CONCLUSIONS: The findings suggest that the curriculum-based RTP improved students' research productivity, and that overall program satisfaction and self-assessed performance were associated with increased students' intent to participate in future research.
Assuntos
Pesquisa Biomédica , Currículo , Educação de Graduação em Medicina , Estudantes de Medicina , Humanos , Masculino , Feminino , Estudantes de Medicina/psicologia , Pesquisa Biomédica/educação , Estudos Longitudinais , Eficiência , China , Adulto Jovem , Escolha da ProfissãoRESUMO
OBJECTIVE: To identify the risk factors of refractory peritoneal dialysis related peritonitis (PDRP) and construct a nomogram to predict the occurrence of refractory PDRP. METHODS: Refractory peritonitis was defined as the peritonitis episode with persistently cloudy bags or persistent dialysis effluent leukocyte count >100 × 109/L after 5 days of appropriate antibiotic therapy. The study dataset was randomly divided into a 70% training set and a 30% validation set. Univariate logistic analysis, LASSO regression analysis, and random forest algorithms were utilized to identify the potential risk factors for refractory peritonitis. Independent risk factors identified using multivariate logistic analysis were used to construct a nomogram. The discriminative ability, calibrating ability, and clinical practicality of the nomogram were evaluated using the receiver operating characteristic curve, Hosmer-Lemeshow test, calibration curve, and decision curve analysis. RESULTS: A total of 294 peritonitis episodes in 178 patients treated with peritoneal dialysis (PD) were enrolled, of which 93 were refractory peritonitis. C-reactive protein, serum albumin, diabetes mellitus, PD duration, and type of causative organisms were independent risk factors for refractory peritonitis. The nomogram model exhibited excellent discrimination with an area under the curve (AUC) of 0.781 (95% CI: 0.716-0.847) in the training set and 0.741 (95% CI: 0.627-0.855) in the validation set. The Hosmer-Lemeshow test and calibration curve indicated satisfactory calibration ability of the predictive model. Decision curve analysis revealed that the nomogram model had good clinical utility in predicting refractory peritonitis. CONCLUSION: This nomogram can accurately predict refractory peritonitis in patients treated with PD.
Assuntos
Nomogramas , Diálise Peritoneal , Peritonite , Humanos , Peritonite/etiologia , Peritonite/diagnóstico , Diálise Peritoneal/efeitos adversos , Masculino , Feminino , Pessoa de Meia-Idade , Fatores de Risco , Adulto , Idoso , Curva ROC , Estudos Retrospectivos , Modelos Logísticos , Antibacterianos/uso terapêutico , Falência Renal Crônica/terapia , Falência Renal Crônica/complicações , Proteína C-Reativa/análiseRESUMO
INTRODUCTION: Patients with idiopathic membranous nephropathy (IMN) are particularly susceptible to thromboembolism (TE). The phospholipase A2 receptor (PLA2R) antibody (Ab) has been indicated to work as an independent risk predictor for venous TE in IMN. This study aimed to further explore the predictive value of PLA2R Ab for both venous and arterial TE in IMN patients. METHODS: A total of 91 IMN patients were retrospectively selected and divided into anti-PLA2R-positive or anti-PLA2R-negative groups according to the anti-PLA2R Ab titer (cutoff: 20 RU/mL). Serum PLA2R Abs were estimated using ELISA. Anti-PLA2R-positive IMN patients were further assigned into two groups based on the presence or absence of TE. RESULTS: Twelve (18.18%) IMN patients with anti-PLA2R positivity had TE, including both venous and arterial TE. No TE occurred in the anti-PLA2R-negative group. IMN patients in the anti-PLA2R-positive group had significantly higher levels of total cholesterol and low-density lipoprotein than those in the anti-PLA2R-negative group. No significant difference was observed in the anti-PLA2R Ab titer between patients with and without TE. Patients with TE were significantly older than those without TE. CONCLUSION: This study demonstrates that the positive status of anti-PLA2R Abs contributes to thrombosis formation in IMN.
Assuntos
Glomerulonefrite Membranosa , Receptores da Fosfolipase A2 , Humanos , Glomerulonefrite Membranosa/sangue , Glomerulonefrite Membranosa/imunologia , Receptores da Fosfolipase A2/imunologia , Masculino , Feminino , Pessoa de Meia-Idade , Estudos Retrospectivos , Autoanticorpos/sangue , Adulto , Idoso , Tromboembolia/sangue , Tromboembolia/etiologiaRESUMO
BACKGROUND: The urgency and risk of clinical nursing may cause nurses to experience traumatic stress, but it may also lead to posttraumatic growth. However, no study has comprehensively analyzed the prevalence of posttraumatic growth among nurses using a unified outcome measure and a validated assessment tool. AIM: This study aims to systematically assess the prevalence and factors of posttraumatic growth among nurses based on the Posttraumatic Growth Inventory (PTGI). METHODS: Ten databases, including The Cochrane Library, PubMed, Web of Science, CINAHL, Springerlink, Embase, Chinese Biomedical (CBM), China National Knowledge Infrastructure (CNKI), WanFang, and VIP databases, were searched as of December 31, 2022. The prevalence of posttraumatic growth was pooled using Stata 17.0 software. The PRISMA guideline was used to report the systematic review and meta-analysis. PROSPERO registration number: CRD42022365620. RESULTS: A total of 30 studies were included in this systematic review and meta-analysis, consisting of 14,022 nurses worldwide from four countries. In our study, the pooled mean score of posttraumatic growth among nurses was 66.34 (95% CI: 61.25-71.43). From 2015 to 2022, nurses' posttraumatic growth levels gradually increased. In addition, Turkey nurses have the lowest posttraumatic growth levelnurses who experienced workplace violence have a lower posttraumatic growth level compared with other nurses; while nurses aged over 30 and male have higher posttraumatic growth levels. CONCLUSIONS: While several studies on the prevalence of posttraumatic growth among nurses have been published, the reported data are quite different. Our systematic review and meta-analysis found that nurses' posttraumatic growth level was "moderate," and nurses' posttraumatic growth may vary based on publication year, country, traumatic event, age, and gender. IMPLICATIONS FOR NURSING AND HEALTH POLICY: Our findings may provide a theoretical basis for hospital administrators and policy makers to scientifically manage human resources, comprehensively evaluate nurses' mental health, and promote nurses' posttraumatic growth in different traumatic events, which is conducive to the formulation and implementation of relevant policy guidelines.
Assuntos
Crescimento Psicológico Pós-Traumático , Humanos , Prevalência , Masculino , Feminino , Adulto , Recursos Humanos de Enfermagem Hospitalar/psicologia , Recursos Humanos de Enfermagem Hospitalar/estatística & dados numéricos , Transtornos de Estresse Pós-Traumáticos/epidemiologia , Transtornos de Estresse Pós-Traumáticos/psicologiaRESUMO
BACKGROUND: Academic procrastination is common among college students, which affects their learning status and even their physical and mental health. Rumination, psychological capital, and academic procrastination are closely related, but for nursing students, there are few studies reporting on their levels and relationships. OBJECTIVE: The aim of this study was to investigate the levels of rumination, psychological capital, and academic procrastination among nursing students, and examine the mediating role of psychological capital in rumination and academic procrastination. DESIGN: A cross-sectional study. SETTING: The study sampled three medical colleges in Sichuan Province, China. PARTICIPANTS: A convenience sampling method was used to select 556 nursing students from April to June 2023. METHODS: 556 nursing students were asked to complete questionnaires regarding social-demographic information, rumination, psychological capital, and academic procrastination. Descriptive statistics, Pearson correlation analysis and structural equation model were used in this study. RESULTS: The scores of rumination, psychological capital, and academic procrastination among nursing students were 46.08 ± 13.61, 108.28 ± 19.50 and 55.32 ± 12.30, respectively. Additionally, structural equation modeling showed that psychological capital mediated the relationship between rumination and academic procrastination with the partial mediating effect of 0.425. CONCLUSION: Our results suggest that nursing students exhibit moderate levels of rumination, psychological capital and academic procrastination. Moreover, rumination can not only directly affect academic procrastination, but also indirectly through psychological capital. Nursing educators should strengthen their attention to the mental health and learning status of nursing students, take measures to help them adapt to campus life, alleviate rumination, enrich psychological capital, and reduce the risk of academic procrastination.
Assuntos
Procrastinação , Estudantes de Enfermagem , Humanos , Estudantes de Enfermagem/psicologia , Estudos Transversais , Inquéritos e Questionários , Saúde MentalRESUMO
Rhododendron dauricum L. is a semi-evergreen shrub of high ornamental and medicinal values in Northeast China. To study the molecular mechanisms of corolla coloration in R. dauricum, integrated metabolomics and transcriptomics were performed in R. dauricum featuring purple flowers and R. dauricum var. album featuring white flowers. Comparative metabolomics revealed 25 differential metabolites in the corolla of the two distinct colors, enriched in flavonoids that are closely related to pigmentation in the flower. Differential analysis of the transcriptomics data revealed enrichment of structural genes for flavonoid biosynthesis (99 up- and 58 down-regulated, respectively, in purple corollas compared to white ones). Significantly, CHS and CHI, key genes in the early stage of anthocyanin synthesis, as well as F3H, F3'H, F3'5'H, DFR, ANS, and UFGT that promote the accumulation of pigments in the late stage of anthocyanin synthesis, were up-regulated in R. dauricum (purple color). In R. dauricum var. album, FLS were key genes determining the accumulation of flavonols. In addition, transcriptome-metabolome correlation analysis identified 16 R2R3 MYB transcription factors (out of 83 MYBs) that are important for corolla coloration. Five negative and four positive MYBs were further identified by integrated transcriptional and metabolic network analysis, revealing a key role of MYBA and MYB12 in regulating anthocyanins and flavonols, respectively. Moreover, we validated the function of RdMYBA by creating stable transgenic plants and found that RdMYBA promotes anthocyanin biosynthesis. In summary, we systematically characterized the transcriptome and metabolome of two R. dauricum cultivars with different flower colors and identified MYBs as key factors in modulating corolla coloration.
Assuntos
Antocianinas , Rhododendron , Antocianinas/metabolismo , Rhododendron/genética , Perfilação da Expressão Gênica , Fatores de Transcrição/genética , Pigmentação/genética , Transcriptoma/genética , Flores/genética , Flores/metabolismo , Flavonóis/metabolismo , Regulação da Expressão Gênica de PlantasRESUMO
BACKGROUND: To explore the cut-off values of haemoglobin (Hb) on adverse clinical outcomes in incident peritoneal dialysis (PD) patients based on a national-level database. METHODS: The observational cohort study was from the Peritoneal Dialysis Telemedicine-assisted Platform (PDTAP) dataset. The primary outcomes were all-cause mortality, major adverse cardiovascular events (MACE) and modified MACE (MACE+). The secondary outcomes were the occurrences of hospitalization, first-episode peritonitis and permanent transfer to haemodialysis (HD). RESULTS: A total of 2591 PD patients were enrolled between June 2016 and April 2019 and followed up until December 2020. Baseline and time-averaged Hb <100 g/l were associated with all-cause mortality, MACE, MACE+ and hospitalizations. After multivariable adjustments, only time-averaged Hb <100 g/l significantly predicted a higher risk for all-cause mortality {hazard ratio [HR] 1.83 [95% confidence interval (CI) 1.19-281], P = .006}, MACE [HR 1.99 (95% CI 1.16-3.40), P = .012] and MACE+ [HR 1.77 (95% CI 1.15-2.73), P = .010] in the total cohort. No associations between Hb and hospitalizations, transfer to HD and first-episode peritonitis were observed. Among patients with Hb ≥100 g/l at baseline, younger age, female, use of iron supplementation, lower values of serum albumin and renal Kt/V independently predicted the incidence of Hb <100 g/l during the follow-up. CONCLUSION: This study provided real-world evidence on the cut-off value of Hb for predicting poorer outcomes through a nation-level prospective PD cohort.
Assuntos
Falência Renal Crônica , Diálise Peritoneal , Peritonite , Humanos , Feminino , Estudos Prospectivos , Diálise Peritoneal/efeitos adversos , Diálise Renal/efeitos adversos , Hemoglobinas , Falência Renal Crônica/epidemiologia , Peritonite/etiologia , Estudos RetrospectivosRESUMO
PURPOSE: The high cost of cancer treatment exposes patients to financial toxicity during treatment; however, no study has comprehensively analyzed the incidence of financial toxicity using a validated assessment tool. In this study, the objective was to ascertain the incidence of financial toxicity in cancer patients and the factors influencing it. METHODS: Nine electronic databases were retrieved to collect cross-sectional studies reporting financial toxicity in cancer patients. A random effects meta-analysis was applied to yield the overall prevalence of financial toxicity. Subgroup analyses were conducted depending on the factors affecting financial toxicity. RESULTS: In total, 30 studies met our inclusion criteria. The pooled prevalence of financial toxicity in cancer patients was 48% (95%CI:38%-58%, I2 = 99.4%, p < 0.001). In the subgroup analysis, a higher prevalence of financial toxicity in patients aged <67 years (47%, 95%CI: 28%-66%, I2 = 97.5%, p < 0.001), female (46%, 95%CI:39%-53%, I2 = 94.9%,p < 0.001), lung cancer(57%, 95%CI:38%-75%, I2 = 96.9%, p < 0.001), developing countries (64%, 95%CI:55%-72%, I2 = 98.1%, p < 0.001), time of investigation following COVID-19 (53%, 95%CI:37%-69%, I2 = 99.4%, p < 0.001). CONCLUSION: Financial toxicity is prevalent in cancer patients and is increasingly evident after COVID-19. Furthermore, the odds of financial toxicity are higher in patients who are female, younger, whose cancer type is lung cancer, and from developing countries. These findings emphasize the significance of evaluating financial toxicity in cancer patients after COVID-19, especially in developing countries. This may play a pivotal role in helping patients cope with financial toxicity.
Assuntos
Neoplasias , Humanos , Neoplasias/economia , Prevalência , COVID-19/epidemiologia , COVID-19/economia , Efeitos Psicossociais da Doença , Feminino , Estudos Transversais , Masculino , Custos de Cuidados de Saúde/estatística & dados numéricosRESUMO
Drought and high salinity greatly affect plant growth and development. WRKY transcription factors play a key role in plant tolerance to abiotic stress, but the functions of WRKYs in the ornamental monocotyledon Iris laevigata remain largely unexplored. In this study, we cloned IlWRKY70 and found that it is a Group III WRKY localized in the nucleus. The expression of IlWRKY70 was induced by NaCl and PEG-6000, which reached peaks (4.38 and 5.65 times) after 3 h and 1 h, respectively. The exogenous overexpression of IlWRKY70 in N. tabacum significantly improved the resistance under NaCl and drought treatments, as evidenced by higher germination rates, longer root lengths, and increased fresh weights compared to those of control plants. In addition, transgenic seedlings showed significantly reduced wilting, higher photosynthetic performance, higher Fv/Fm and chlorophyll content, and lower stomatal conductance. Moreover, transgenic lines showed higher antioxidant enzymatic activities, lower reactive oxygen species (ROS), and lower malondialdehyde contents. Accordingly, we also found higher expressions of antioxidant defense genes, including SOD, CAT, and POD, in transgenic lines compared to controls under salt and drought stresses. Thus, IlWRKY70 enhances the abilities of salt and drought tolerances in plants, at least partially, via ROS regulation and can be used for breeding I. laevigata possessing enhanced salt and drought resistances.
Assuntos
Gênero Iris , Fatores de Transcrição , Fatores de Transcrição/genética , Fatores de Transcrição/metabolismo , Nicotiana/metabolismo , Gênero Iris/genética , Espécies Reativas de Oxigênio/metabolismo , Antioxidantes/metabolismo , Cloreto de Sódio/farmacologia , Secas , Tolerância ao Sal/genética , Plantas Geneticamente Modificadas/genética , Plantas Geneticamente Modificadas/metabolismo , Proteínas de Plantas/genética , Proteínas de Plantas/metabolismo , Regulação da Expressão Gênica de Plantas , Melhoramento Vegetal , Estresse Fisiológico/genéticaRESUMO
AIMS: This study aimed to explore the effects of compassion satisfaction and compassion fatigue on the posttraumatic growth of psychiatric nurses. BACKGROUND: Psychiatric nurses' prolonged and repeated exposure to trauma and complex situations in the work environment can lead to negative emotions such as compassion fatigue, but they also experience positive consequences such as posttraumatic growth, and the relationship between compassion fatigue and posttraumatic growth is not unclear. METHODS: A total of 336 nurses from psychiatry departments of seven tertiary hospitals in Sichuan Province, China, were administered an online questionnaire. Participants were recruited through convenience sampling. The posttraumatic growth level was measured with the Simplified Chinese version of the Posttraumatic Growth Inventory. The Professional Quality of Life Scale-Chinese version was used to assess compassion satisfaction, burnout and secondary traumatic stress. T-test and one-way variance analysis, Pearson correlation analysis and hierarchical linear regression were used for data analysis. A STROBE checklist was used to guide the reporting of the research. RESULTS: Psychiatric nurses' posttraumatic growth is at a low level, influenced by demographic and occupational factors, whereas compassion satisfaction, burnout and secondary traumatic stress are at a moderate level. Hierarchical regression analysis suggested that compassion satisfaction and secondary traumatic stress had a positive impact on posttraumatic growth, whereas burnout had a negative impact on posttraumatic growth. CONCLUSIONS: Findings suggest that nursing managers should attach importance to the mental health of psychiatric nurses, improve compassion satisfaction, alleviate burnout and promote posttraumatic growth.
RESUMO
OBJECTIVE: The serum triglyceride-glucose (TyG) index is a marker of inflammation. However, the relationship between TyG index and peritoneal dialysis-related peritonitis (PDRP) is unclear. This study aimed to investigate the potential relationship between the baseline TyG index and the initial episode of PDRP. METHODS: A total of 208 peritoneal dialysis (PD) patients were enrolled from January 1, 2012, to December 31, 2019 and followed up until December 31, 2022. They were divided into 2 groups according to the median TyG. The primary outcome was the occurrence of the initial episode of PDRP while on PD therapy. Kaplan-Meier curves and Cox regression analyses were used to examine the association between them. RESULTS: Eighty-five initial episodes of PDRP were identified. The risk of PDRP was higher in the high-TyG index group (p = 0.030). Multivariate Cox regression analysis showed a higher risk of PDRP in patients with a high TyG index (HR = 1.800, 95% CI 1.511-2.815, p = 0.010). CONCLUSION: The baseline serum TyG index was an independent risk factor for the initial episode of PDRP in chronic PD patients.
Assuntos
Falência Renal Crônica , Diálise Peritoneal , Peritonite , Humanos , Glucose , Triglicerídeos , Estudos Retrospectivos , Falência Renal Crônica/complicações , Falência Renal Crônica/terapia , Falência Renal Crônica/epidemiologia , Diálise Peritoneal/efeitos adversos , Peritonite/epidemiologia , Peritonite/etiologia , Fatores de Risco , Glicemia , BiomarcadoresRESUMO
Aberrant activation of epidermal growth factor receptor (EGFR) signaling is closely related to the development of non-small cell lung cancer (NSCLC). However, targeted EGFR therapeutics such as tyrosine kinase inhibitors (TKIs) face the challenge of EGFR mutation-mediated resistance. Here, we showed that the reduced JmjC domain-containing 5 (JMJD5) expression is negatively associated with EGFR stability and NSCLC progression. Mechanically, JMJD5 cooperated with E3 ligase HUWE1 to destabilize EGFR and EGFR TKI-resistant mutants for proteasomal degradation, thereby inhibiting NSCLC growth and promoting TKI sensitivity. Furthermore, we identified that JMJD5 can be transported into recipient cells via extracellular vesicles, thereby inhibiting the growth of NSCLC. Together, our findings demonstrate the tumor-suppressive role of JMJD5 in NSCLC and suggest a putative therapeutic strategy for EGFR-related NSCLC by targeting JMJD5 to destabilize EGFR.
Assuntos
Carcinoma Pulmonar de Células não Pequenas , Neoplasias Pulmonares , Humanos , Neoplasias Pulmonares/tratamento farmacológico , Neoplasias Pulmonares/genética , Neoplasias Pulmonares/metabolismo , Carcinoma Pulmonar de Células não Pequenas/tratamento farmacológico , Carcinoma Pulmonar de Células não Pequenas/genética , Carcinoma Pulmonar de Células não Pequenas/metabolismo , Inibidores de Proteínas Quinases/farmacologia , Receptores ErbB/metabolismo , Transdução de Sinais , Resistencia a Medicamentos Antineoplásicos , Mutação/genética , Linhagem Celular Tumoral , Proteínas Supressoras de Tumor/metabolismo , Ubiquitina-Proteína Ligases/metabolismoRESUMO
BACKGROUND: Nurses' secondary traumatic stress, compassion satisfaction and posttraumatic growth are closely related, but for newly graduated nurses, there are few reports to evaluate the specific path between these three. The aim of this study was to investigate examine the mediating role of compassion satisfaction in secondary traumatic stress and posttraumatic growth among newly graduated nurses. METHODS: From March 2021 to May 2021, a total of 330 newly graduated nurses from five tertiary hospitals in China were enrolled, and asked to complete questionnaires regarding secondary traumatic stress, compassion satisfaction and posttraumatic growth. Descriptive statistics, independent-samples T-test, one-way analysis of variance (ANOVA), Pearson correlation analysis and structural equation model were used in this study. A STROBE checklist was used to report findings. RESULTS: The scores of secondary traumatic stress, compassion satisfaction and posttraumatic growth of newly graduated nurses were 27.11 ± 4.94 (score range: 10-50), 31.89 ± 6.22 (score range: 10-50) and 56.47 ± 20.41 (score range: 0-100), respectively. Additionally, structural equation modeling showed that compassion satisfaction mediated the relationship between secondary traumatic stress and posttraumatic growth with the partial mediating effect of 0.089. CONCLUSIONS: Newly graduated nurses may experience moderate secondary traumatic stress, but their posttraumatic growth is at a low level, and compassion satisfaction significantly affects the relationship between the two. Nursing managers should strengthen psychological evaluation, and promote their posttraumatic growth by improving their level of compassion satisfaction.
RESUMO
Background: This study aimed to develop a nomogram for predicting gram-negative bacterial (GNB) infections in patients with peritoneal dialysis-associated peritonitis (PDAP) to identify patients at high risk for GNB infections. Methods: In this investigation, hospitalization information was gathered retrospectively for patients with PDAP from January 2016 to December 2021. The concatenation of potential biomarkers obtained by univariate logistic regression, LASSO analysis, and RF algorithms into multivariate logistic regression was used to identify confounding factors related to GNB infections, which were then integrated into the nomogram. The concordance index (C-Index) was utilized to assess the precision of the model's predictions. The area under the curve (AUC) and decision curve analysis (DCA) was used to assess the predictive performance and clinical utility of the nomogram. Results: The final study population included 217 patients with PDAP, and 37 (17.1%) patients had gram-negative bacteria due to dialysate effluent culture. After multivariate logistic regression, age, procalcitonin, and hemoglobin were predictive factors of GNB infections. The C-index and bootstrap-corrected index of the nomogram for estimating GNB infections in patients were 0.821 and 0.814, respectively. The calibration plots showed good agreement between the predictions of the nomogram and the actual observation of GNB infections. The AUC of the receiver operating characteristic curve was 0.821, 95% CI: 0.747-0.896, which indicates that the model has good predictive accuracy. In addition, the DCA curve showed that the nomogram had a high clinical value in the range of 1%-94%, which further demonstrated that the nomogram could accurately predict GNB infection in patients with PDAP. Conclusions: We have created a new nomogram for predicting GNB infections in patients with PDAP. The nomogram model may improve the identification of GNB infections in patients with PDAP and contribute to timely intervention to improve patient prognosis.
RESUMO
Circular RNAs have been demonstrated to act as vital participants in various diseases, including preeclampsia (PE). This study aimed to research the effects of circ_0004904 on PE. The contents of circ_0004904, microRNA-19b-3p (miR-19b-3p) and arrestin domain containing 3 (ARRDC3) were quantified by quantitative real-time PCR and western blot. The 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide and 5-ethynyl-2'-deoxyuridine assays were enforced to assess cell proliferation. The transwell assay and flow cytometry were applied to detect the cell migration, invasion, and apoptosis. The liaison between miR-19b-3p and circ_0004904 or ARRDC3 was demonstrated by dual-luciferase reporter assay. Thereafter, circ_0004904 and ARRDC3 were augmented, and miR-19b-3p was restrained in PE. Circ_0004904 silencing contributed to cell proliferation, migration, and invasion, but restrained cell apoptosis in trophoblast cells. Further, miR-19b-3p was a target of circ_0004904, and miR-19b-3p could target ARRDC3. Additionally, circ_0004904 accelerated PE evolution via changing ARRDC3 level by binding to miR-19b-3p. In all, circ_0004904 encouraged PE progress via miR-19b-3p/ARRDC3 axis.
RESUMO
Metabolic reprogramming is considered one of the main driving forces for tumor progression, providing energy and substrates of biosynthesis to support rapid neoplastic proliferation. Particularly, the tumor suppressor protein p53 was shown to revert the Warburg effect and play complex roles in regulating glucose metabolism. Jumonji C domain-containing protein 5 (JMJD5) has previously been reported as a negative regulator of p53. However, the role of JMJD5 in p53-mediated metabolic reprogramming remains elusive. Here, we discovered that knockdown of JMJD5 significantly enhances TIGAR expression in p53 wild-type non-small cell lung cancer (NSCLC) cells, which could further suppress glycolysis and promote the pentose phosphate pathway. Besides, JMJD5 knockdown promotes the NSCLC cell proliferation in vitro and xenograft tumor growth in vivo, while silencing TIGAR can abolish this effect. Low JMJD5 expression levels are associated with elevated TIGAR levels and correlates with poor prognosis in lung cancer patients. Taken together, our findings suggest that JMJD5 is a key regulator of tumor glucose metabolism by targeting the p53/TIGAR metabolic pathway.
Assuntos
Carcinoma Pulmonar de Células não Pequenas , Neoplasias Pulmonares , Humanos , Neoplasias Pulmonares/genética , Proteína Supressora de Tumor p53/genética , Proteína Supressora de Tumor p53/metabolismo , Carcinoma Pulmonar de Células não Pequenas/genética , Glicólise , Glucose , Linhagem Celular Tumoral , ApoptoseRESUMO
The waveform of chest compressions directly affects the blood circulation of patients with cardiac arrest. Currently, few pieces of research have focused on the influence of the cardiopulmonary resuscitation (CPR) device's mechanical waveform on blood circulation. This study investigates the effect of the mechanical waveform from a novel CPR prototype on blood circulation and explores the optimal compression parameters of the mechanical waveform to optimize blood circulation. A novel CPR prototype was designed and built to establish a kinetic model during compressions. The prototype's mechanical waveforms at various operating conditions were obtained for comparison with manual waveforms and the investigation of the optimal compression parameters. The novel CPR prototype can complete chest compressions quickly and stably. The cardiac output (CO), coronary perfusion pressure (CPP), and cerebral flow (CF) obtained by mechanical waveform compressions (1.22367 ± 0.00942 L/min, 30.95083 ± 0.24039 mmHg, 0.31992 ± 0.00343 L/min, respectively) were significantly better than those obtained by manual waveform compressions (1.10783 ± 0.03601 L/min, 21.39210 ± 1.42771 mmHg, 0.29598 ± 0.01344 L/min, respectively). With the compression of the prototype, the blood circulation can be optimized at the compression depth of 50 mm, approximately 0.6 duty cycle, and approximately 110 press/min, which is of guiding significance for the practical use of CPR devices to rescue patients with cardiac arrest.