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1.
Surg Endosc ; 2024 Mar 07.
Artigo em Inglês | MEDLINE | ID: mdl-38453749

RESUMO

BACKGROUND: Despite a significant 30% ten-year readmission rate for SBO patients, investigations into recurrent risk factors after non-operative management are scarce. The study aims to generate a risk factor scoring system, the 'Small Bowel Obstruction Recurrence Score' (SBORS), predicting 6-month recurrence of small bowel obstruction (SBO) after successful non-surgical management in patients who have history of intra-abdominal surgery. METHODS: We analyzed data from patients aged ≥ 18 with a history of intra-abdominal surgery and diagnosed with SBO (ICD-9 code: 560, 568) and were successful treated non-surgically between 2004 and 2008. Participants were divided into model-derivation (80%) and validation (20%) group. RESULTS: We analyzed 23,901 patients and developed the SBORS based on factors including the length of hospital stay > 4 days, previous operations > once, hemiplegia, extra-abdominal and intra-abdominal malignancy, esophagogastric surgery and intestino-colonic surgery. Scores > 2 indicated higher rates and risks of recurrence within 6 months (12.96% vs. 7.27%, OR 1.898, p < 0.001 in model-derivation group, 12.60% vs. 7.05%, OR 1.901, p < 0.001 in validation group) with a significantly increased risk of mortality and operative events for recurrent episodes. The SBORS model demonstrated good calibration and acceptable discrimination, with an area under curve values of 0.607 and 0.599 for the score generation and validation group, respectively. CONCLUSIONS: We established the effective 'SBORS' to predict 6-month SBO recurrence risk in patients who have history of intra-abdominal surgery and have been successfully managed non-surgically for the initial obstruction event. Those with scores > 2 face higher recurrence rates and operative risks after successful non-surgical management.

2.
Children (Basel) ; 11(2)2024 Feb 09.
Artigo em Inglês | MEDLINE | ID: mdl-38397332

RESUMO

This study aimed to examine the group differences in participation level between children with and without global delays and to explore the associations between mastery motivation, executive function, and participation in young children with and without global developmental delays (GDD). Methods: we recruited 26 children with GDD aged 2 to 5 years and 26 children with sex- and mental age-matched developing typically (TD). The participants were assessed child development using the standardized developmental test, and their mothers were asked to fill in questionnaires, including the revised Dimension of Mastery Questionnaire (DMQ 18) with preschool version to assess mastery motivation, the Behavior Rating Inventory of Executive Function with preschool version (BRIEF-P) to assess executive function, and the Young Children's Participation and Environment Measure (YC-PEM) used to obtain participation levels. Results and conclusions: young children with GDD showed significantly lower participation levels at home, daycare, and community than TD group. We found that for young children, child mastery pleasure, health condition, and total persistence were significant predictors of child participation. Therefore, coaching parents to observe and facilitate their children's motivation and executive function, as well as child developmental abilities, is important in order to enhance children's participation in daily activities.

3.
Int J Med Sci ; 21(3): 583-592, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38322591

RESUMO

Sodium-glucose cotransporter 2 (SGLT2) inhibitors revealed the protective function on various systemic diseases. This study aimed to determine whether the usage of SGLT2 inhibitors associates with incidences of superficial keratopathy and infectious keratitis in type 2 diabetes mellitus (T2DM) patients. A retrospective cohort study with the usage of National Health Insurance Research Database of Taiwan was conducted. The T2DM patients were divided into the SGLT2 inhibitors and control groups according to the usage of SGLT2 inhibitors or not. The major outcomes were defined as the occurrence of superficial keratopathy and infectious keratitis. There were 766 and 1037 episodes of superficial keratopathy in the SGLT2 inhibitors and control groups and SGLT2 inhibitors group showed a significantly lower incidence of superficial keratopathy than the control group (aHR: 0.721, 95% CI: 0.656-0.791, P < 0.0001). Also, there were 166 and 251 infectious keratitis events in the SGLT2 inhibitors and control groups and patients in the SGLT2 inhibitors group revealed a significantly lower infectious keratitis incidence than those in the control group (aHR: 0.654, 95% CI: 0.537-0.796, P < 0.0001). In addition, the patients that received SGLT2 inhibitors demonstrated lower cumulative incidences of both superficial keratopathy and infectious keratitis compared to the non-SGLT2 inhibitors users (both P < 0.0001). In conclusion, the usage of SGLT2 inhibitors correlates to lower incidence of superficial keratopathy and infectious keratitis in T2DM individuals, which is more significant in patients with persistent SGLT2 inhibitors application.


Assuntos
Doenças da Córnea , Diabetes Mellitus Tipo 2 , Ceratite , Inibidores do Transportador 2 de Sódio-Glicose , Humanos , Doenças da Córnea/complicações , Diabetes Mellitus Tipo 2/complicações , Hipoglicemiantes , Incidência , Ceratite/complicações , Estudos Retrospectivos
4.
Am J Occup Ther ; 78(1)2024 Jan 01.
Artigo em Inglês | MEDLINE | ID: mdl-38215306

RESUMO

IMPORTANCE: Establishing empirical evidence on the psychometric properties of the Test of Visual-Motor Skills (3rd ed.; TVMS-3) is helpful for guiding its use as an assessment of visual-motor integration (VMI) skills in kindergarten children with developmental coordination disorder (DCD). OBJECTIVE: To investigate the test-retest reliability, criterion-related validity, and ecological validity of the TVMS-3 in Taiwanese kindergarten children with DCD. DESIGN: A nonexperimental, descriptive, correlational design. SETTING: A hospital in Central Taiwan. PARTICIPANTS: Fifty-seven kindergarten children with DCD were recruited in the study. OUTCOMES AND MEASURES: Intraclass correlation coefficient, percentage of minimal detectable change, and paired t test (Wilcoxon signed rank test) were used to investigate the test-retest reliability of the TVMS-3. The correlations (Pearson's r) between the TVMS-3 accuracy score and the scores of each of the four domains and the adaptive behavior composite score of the Vineland Adaptive Behavior Scales (3rd ed.; Vineland-3) were calculated, respectively, to examine criterion-related validity and ecological validity. RESULTS: The accuracy score of the TVMS-3 had excellent test-retest reliability and acceptable random measurement error. Moreover, it showed good criterion-related validity and sufficient ecological validity with the Vineland-3 in Taiwanese kindergarten children with DCD. CONCLUSIONS AND RELEVANCE: The accuracy score of the TVMS-3 is applicable to Taiwanese kindergarten children with DCD in clinical and research settings. Plain-Language Summary: The accuracy score of the Test of Visual-Motor Skills (3rd ed.; TVMS-3) is a useful assessment tool to detect deficits in visual-motor integration for Taiwanese kindergarten children with developmental coordination disorder. The TVMS-3 has excellent test-retest reliability, good criterion-related validity, and sufficient ecological validity.


Assuntos
Transtornos das Habilidades Motoras , Destreza Motora , Criança , Humanos , Transtornos das Habilidades Motoras/diagnóstico , Reprodutibilidade dos Testes , Escolaridade , Instituições Acadêmicas , Psicometria
5.
Naunyn Schmiedebergs Arch Pharmacol ; 397(3): 1865-1874, 2024 03.
Artigo em Inglês | MEDLINE | ID: mdl-37773525

RESUMO

The marine environment has been recognized as a prolific source of potent bioactive compounds with significant anticancer properties. Among these, heteronemin, a sesterterpenoid-type natural product, has shown promise. This study delves into the potential of heteronemin as a ferroptotic agent against pancreatic cancer, using the Panc-1 cell line as a model. The cytotoxic potential of heteronemin was assessed using cell viability assays. Furthermore, its effect on lipid peroxidation was determined spectrophotometrically, while the changes it induced in autophagy- and ferritin-related protein expressions were evaluated using immunoblotting techniques. Various cell-based tests were employed to scrutinize its anticancer efficacy. Heteronemin displayed a notable cytotoxic effect, reducing cell viability by 50% at a concentration of 55 nM. This cytotoxicity was discernibly linked to ferroptosis, as evidenced by the reversal of cell death upon treatment with the ferroptosis inhibitor, ferrostatin-1. Heteronemin treatment led to a marked increase in ferroptosis markers and malondialdehyde (MDA) levels. Conversely, the expression of glutathione peroxidase-4 (GPX4), a key anti-ferroptotic protein, was suppressed. Furthermore, significant modulations in the expression of ferritinophagy- and iron-related proteins such as Atg5, Atg7, FTL, STEAP3, and DMT-1 were evident post-treatment (p < 0.05). This study underscores the potential of heteronemin as a ferroptosis inducer in pancreatic cancer cells. Given its robust cytotoxicity, heteronemin emerges as a promising lead compound for further exploration in cancer therapeutics.


Assuntos
Antineoplásicos , Neoplasias Pancreáticas , Humanos , Ferro/metabolismo , Morte Celular , Terpenos/farmacologia , Antineoplásicos/farmacologia , Neoplasias Pancreáticas/tratamento farmacológico
6.
Arch Gerontol Geriatr ; 117: 105164, 2024 02.
Artigo em Inglês | MEDLINE | ID: mdl-37708578

RESUMO

OBJECTIVES: This study aims to investigate how subjective aging influences the psychological and behavioral responses of older individuals, specifically focusing on the associations between subjective aging and longitudinal changes in biological age. METHODS: This is a retrospective cohort study retrieving data from the Taiwan Longitudinal Study on Aging (TLSA), over a 4-year follow-up period. Subjective aging is assessed by asking participants if they perceive themselves as old, while frailty is measured using a frailty index comprising 34 deficits from various domains. Participants are categorized into three groups based on their chronological age. The association between subjective aging and transition of biological age (as indicated by an increased frailty index) from 2011 to 2015 is examined using logistic regression models. RESULTS: The study consisted of 2412 participants, who were categorized into middle-age (n = 1,082), young-old (n = 779), and old-old (n = 551) groups. Among them, individuals exhibiting subjective aging at baseline were more likely to be older in chronological age, female, illiterate, and unemployed, compared to those without subjective aging. The adjusted odds ratios (aORs) for the association between subjective aging and an increased biological age were 1.72 [95% CI: 0.88-3.34], 1.61 [0.77-3.37], and 1.08 [0.65-1.80], in the middle-age, young-old, and old-old groups, respectively. DISCUSSIONS: No significant associations were found between changes in biological age and subjective aging across various chronological age groups. Notably, within the younger age group, a discernible trend towards an association was observed, indicating the potential age-related nuances in the complex interrelation between subjective age, biological aging, and chronological aging.


Assuntos
Fragilidade , Humanos , Feminino , Estudos de Coortes , Estudos Longitudinais , Estudos Retrospectivos , Envelhecimento/psicologia
7.
Aging Clin Exp Res ; 35(12): 3215-3226, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-38070123

RESUMO

OBJECTIVES: As the psychosocial competence, personal mastery helps individuals to cope with stressful life events, and this study aims to examine impacts of declines in personal mastery on healthy aging among community-dwelling middle-aged and older adults using a nationally representative cohort. METHODS: Data from 648 study participants in the Social Environment and Biomarkers of Aging Study (SEBAS) were retrieved for analysis. All participants were divided into four groups based on their baseline and changes of personal mastery (measured by the Pearlin mastery score) during the 6-year follow-up. Multivariate logistic regression models were adopted to examine associations between declines in personal mastery and indicators for healthy aging (declines in self-perceived mobility, physical function (activities of daily living (ADLs) and instrumental activities of daily living (IADLs)), cognitive function and depressive symptoms). RESULTS: After adjustments for demographics and comorbidities, those with declines in personal mastery were associated with greater risks of declines in self-perceived mobility (adjusted odds ratio (aOR) 1.50 [95% confidence interval 1.01-2.22], p < 0.05). Although the point estimate in the unadjusted models indicated similar associations between declines in personal mastery and declines in ADLs, IADLs, cognitive function or depressive symptoms, these outcomes did not reach statistical significance in the adjusted model. CONCLUSIONS: Declines in personal mastery were negatively associated with indicators related to healthy aging (particularly locomotion) in a 6-year follow-up. Further investigations are needed to explore the effects of preventing declines in personal mastery in promoting healthy aging over time.


Assuntos
Atividades Cotidianas , Depressão , Humanos , Pessoa de Meia-Idade , Idoso , Seguimentos , Atividades Cotidianas/psicologia , Depressão/psicologia , Cognição , Meio Social , Biomarcadores
8.
Int J Med Sci ; 20(13): 1705-1710, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37928879

RESUMO

Sodium-glucose cotransporter 2 (SGLT2) inhibitors have protective effects against various systemic diseases and neoplasms. This retrospective cohort study evaluated the severity of dry eye disease (DED) in patients with type 2 diabetes mellitus (T2DM) who were treated with SGLT2 inhibitors. Data were obtained from the National Health Insurance Research Database of Taiwan. Patients with T2DM who were treated with SGLT2 inhibitors were assigned to the SGLT2 group. Each patient in the SGLT2 group was matched to two individuals with T2DM who had not used SGLT2 inhibitors, constituting the control group. The primary outcomes were the development of DED and severe DED. A diagnosis of severe DED was indicated by the usage of cyclosporine. Cox proportional hazard regression was applied to yield adjusted hazard ratios (aHR) and 95% confidence intervals (CIs). In the SGLT2 group, 1864 new DED events and 147 severe DED events were recorded. Conversely, 4367 new DED events and 392 severe DED events were recorded in the control group. The incidence (aHR: 0.858, 95% CI: 0.811-0.908, p = 0.0010) and severity (aHR: 0.652, 95% CI: 0.481-0.777, p = 0.0006) of DED were significantly lower in the SGLT2 group than the control group after adjusting for multiple covariates. In subgroup analyses, the incidence and severity of DED were significantly lower in patients younger than 60 years old who were treated with SGLT2 inhibitors than in their older counterparts (p = 0.0008 and 0.0011, respectively). In conclusion, utilization of SGLT2 inhibitors in the T2DM population could reduce both the incidence and severity of DED.


Assuntos
Diabetes Mellitus Tipo 2 , Síndromes do Olho Seco , Inibidores do Transportador 2 de Sódio-Glicose , Humanos , Pessoa de Meia-Idade , Diabetes Mellitus Tipo 2/complicações , Diabetes Mellitus Tipo 2/tratamento farmacológico , Diabetes Mellitus Tipo 2/epidemiologia , Síndromes do Olho Seco/tratamento farmacológico , Síndromes do Olho Seco/epidemiologia , Hipoglicemiantes/uso terapêutico , Gravidade do Paciente , Estudos Retrospectivos , Inibidores do Transportador 2 de Sódio-Glicose/uso terapêutico
9.
Assist Technol ; : 1-8, 2023 Oct 05.
Artigo em Inglês | MEDLINE | ID: mdl-37796439

RESUMO

This study aimed to improve hand performance and play behavior in children with developmental disabilities (DD) using a remodeled glove puppetry approach. Overall, 62 children with DD were randomly assigned to experimental and control groups (n = 31 each). The experimental group underwent a 12-week rehabilitation program by playing with the remodeled glove puppetry, while the children in the control group played with non-remodeled glove puppetry. The Chinese puppet was remodeled using a Lego EV3® robot. Hand kinematics were analyzed through the Siliconcoach® Pro 7 software, which measured the force produced by the baseline ® hydraulic pinch gauge. Play behavior was measured using the Knox Preschool Play Scale-revised (KPPS-r). The experimental group exhibited significant improvements compared to the control group in hand kinematics (wrist range of motion [ROM], p < .05; metacarpophalangeal ROM, p < .05; proximal interphalangeal ROM, p < .05) and KPPS-r scores (space management, p < .05; material management, p < .05; pretense-symbolic, p < .05; participation, p < .05). After the 12-week rehabilitation with the remodeled glove puppetry, the experimental group exhibited significant improvement in kinematics and KPPS-r scores.

10.
Lancet Healthy Longev ; 4(9): e508-e516, 2023 09.
Artigo em Inglês | MEDLINE | ID: mdl-37659432

RESUMO

BACKGROUND: Infectious diseases are the leading cause of deaths in adults aged 65 years or older. Studies of adverse infection outcomes have been limited to specific infections and acute episodes and have not investigated longitudinal trends of cumulative infections. We aimed to identify distinct trajectories of longitudinal infection episodes in older adults and to assess their corresponding risk of all-cause mortality. METHODS: In this retrospective cohort study, we included people aged 65 years or older who were admitted to hospital between Jan 1 and Dec 31, 2011, with one of the following infections: urinary tract, pneumonia, sepsis, cellulitis, cholecystitis, peritonitis, endocarditis, and meningitis. Participants were identified from Taiwan's National Health Insurance Research Database. We analysed infection episodes on a quarterly basis during a 5-year period (2011-15) and used group-based trajectory modelling to identify distinct trajectories. We examined the associations between infection trajectories and all-cause mortality using Kaplan-Meier curves and the Cox proportional hazard model. FINDINGS: Among 79 666 eligible older adults, we identified four distinct infection trajectories over the 5-year follow-up: infrequent (58 619 [73·6%]), increasing (9746 [12·2%]), decreasing (9069 [11·4%]), and frequent (2232 [2·8%]). Compared with people with infrequent infections, the adjusted hazard ratios for all-cause mortality were 2·96 (95% CI 2·82-3·11) in participants with frequent infections, 2·15 (2·09-2·22) in those with increasing infections, and 1·85 (1·80-1·91) in those with decreasing infections. INTERPRETATION: Older adults with multiple infection episodes, irrespective of type, pathogens, and distinct infection pattern, had greater risk of all-cause mortality compared with those with infrequent infections. Further research to define the overall infection burden in older adults is needed for risk stratification and to inform prevention strategies. FUNDING: The Interdisciplinary Research Center for Healthy Longevity of National Yang Ming Chiao Tung University from The Featured Areas Research Center Program within the framework of the Higher Education Sprout Project by the Ministry of Education, the National Science and Technology Council, and the Ministry of Science and Technology in Taiwan.


Assuntos
Aleurites , Pesquisa , Humanos , Idoso , Estudos Retrospectivos , Taiwan/epidemiologia , Pesquisa Interdisciplinar
11.
Nutrients ; 15(9)2023 May 04.
Artigo em Inglês | MEDLINE | ID: mdl-37432325

RESUMO

BACKGROUND: Human endothelial progenitor cells (hEPCs), originating from hemangioblasts in bone marrow (BM), migrate into the blood circulation, differentiate into endothelial cells, and could act as an alternative tool for tissue regeneration. In addition, trimethylamine-N-oxide (TMAO), one of the gut microbiota metabolites, has been identified as an atherosclerosis risk factor. However, the deleterious effects of TMAO on the neovascularization of hEPCs have not been studied yet. RESULTS: Our results demonstrated that TMAO dose-dependently impaired human stem cell factor (SCF)-mediated neovascularization in hEPCs. The action of TMAO was through the inactivation of Akt/endothelial nitric oxide synthase (eNOS), MAPK/ERK signaling pathways, and an upregulation of microRNA (miR)-221. Docosahexaenoic acid (DHA) could effectively inhibit the cellular miR-221 level and induce the phosphorylation level of Akt/eNOS, MAPK/ERK signaling molecules, and neovascularization in hEPCs. DHA enhanced cellular amounts of reduced form glutathione (GSH) through an increased expression of the gamma-glutamylcysteine synthetase (γ-GCS) protein. CONCLUSIONS: TMAO could significantly inhibit SCF-mediated neovascularization, in part in association with an upregulation of miR-221 level, inactivation of Akt/eNOS and MAPK/ERK cascades, suppression of γ-GCS protein, and decreased levels of GSH and GSH/GSSG ratio. Furthermore, the DHA could alleviate the detrimental effects of TMAO and induce neovasculogenesis through suppression of miR-221 level, activation of Akt/eNOS and MAPK/ERK signaling cascades, increased expression of γ-GCS protein, and increment of cellular GSH level and GSH/GSSG ratio in hEPCs.


Assuntos
Células Progenitoras Endoteliais , MicroRNAs , Humanos , Ácidos Docosa-Hexaenoicos , Dissulfeto de Glutationa , Proteínas Proto-Oncogênicas c-akt , Neovascularização Patológica , Óxidos , MicroRNAs/genética
12.
Int J Med Sci ; 20(6): 702-708, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37213671

RESUMO

This study aimed to investigate the possible association between nasopharyngeal carcinoma (NPC) and following open angle glaucoma (OAG). A retrospective research applying the National Health Insurance Research Database (NHIRD) of Taiwan was conducted with a follow up period from January 1, 2000 to December 31, 2016. There were 4184 and 16736 participants that selected and categorized into the NPC and non-NPC groups after exclusion. The major outcome of our study was the development of OAG according to diagnostic codes, exam and managements. The Cox proportional hazard regression was employed to estimate the adjusted hazard ratio (aHR) and 95% confidence interval (CI) of OAG between the two groups. In this study, a numbers of 151 and 513 OAG episodes occurred in the NPC and non-NPC groups and the NPC population showed a significantly higher incidence of OAG compared to the non-NPC population in multivariable analysis (aHR: 1.293, 95% CI: 1.077-1.551, p = 0.0057). Besides, the cumulative probability of OAG was significantly higher in the NPC group than that in the non-NPC population (p = 0.0041). About other risk factor for OAG, age older than 40 years old, diabetes mellitus and persistent steroid usage were related to OAG occurrence (all p < 0.05). In conclusion, the NPC may be an independent risk factor of following OAG development.


Assuntos
Glaucoma de Ângulo Aberto , Neoplasias Nasofaríngeas , Humanos , Adulto , Estudos de Coortes , Estudos Retrospectivos , Glaucoma de Ângulo Aberto/epidemiologia , Glaucoma de Ângulo Aberto/etiologia , Glaucoma de Ângulo Aberto/diagnóstico , Carcinoma Nasofaríngeo/epidemiologia , Fatores de Risco , Incidência , Neoplasias Nasofaríngeas/epidemiologia
13.
Int J Mol Sci ; 24(9)2023 May 04.
Artigo em Inglês | MEDLINE | ID: mdl-37175945

RESUMO

Postmenopausal women who have ovary hormone deficiency (OHD) may experience urological dysfunctions, such as overactive bladder (OAB) symptoms. This study used a female Sprague Dawley rat model that underwent bilateral ovariectomy (OVX) to simulate post-menopause in humans. The rats were treated with platelet-rich plasma (PRP) or platelet-poor plasma (PPP) after 12 months of OVX to investigate the therapeutic effects of PRP on OHD-induced OAB. The OVX-treated rats exhibited a decrease in the expression of urothelial barrier-associated proteins, altered hyaluronic acid (hyaluronan; HA) production, and exacerbated bladder pathological damage and interstitial fibrosis through NFƘB/COX-2 signaling pathways, which may contribute to OAB. In contrast, PRP instillation for four weeks regulated the inflammatory fibrotic biosynthesis, promoted cell proliferation and matrix synthesis of stroma, enhanced mucosal regeneration, and improved urothelial mucosa to alleviate OHD-induced bladder hyperactivity. PRP could release growth factors to promote angiogenic potential for bladder repair through laminin/integrin-α6 and VEGF/VEGF receptor signaling pathways in the pathogenesis of OHD-induced OAB. Furthermore, PRP enhanced the expression of HA receptors and hyaluronan synthases (HAS), reduced hyaluronidases (HYALs), modulated the fibroblast-myofibroblast transition, and increased angiogenesis and matrix synthesis via the PI3K/AKT/m-TOR pathway, resulting in bladder remodeling and regeneration.


Assuntos
Plasma Rico em Plaquetas , Bexiga Urinária Hiperativa , Humanos , Ratos , Feminino , Animais , Bexiga Urinária Hiperativa/terapia , Bexiga Urinária Hiperativa/tratamento farmacológico , Ratos Sprague-Dawley , Ácido Hialurônico/farmacologia , Fosfatidilinositol 3-Quinases , Plasma Rico em Plaquetas/metabolismo
14.
Int J Mol Sci ; 24(10)2023 May 15.
Artigo em Inglês | MEDLINE | ID: mdl-37240154

RESUMO

Kidney renal clear cell carcinoma (KIRC) accounts for approximately 75% of all renal cancers. The prognosis for patients with metastatic KIRC is poor, with less than 10% surviving five years after diagnosis. Inner membrane mitochondrial protein (IMMT) plays a crucial role in shaping the inner mitochondrial membrane (IMM), regulation of metabolism and innate immunity. However, the clinical relevance of IMMT in KIRC is not yet fully understood, and its role in shaping the tumor immune microenvironment (TIME) remains unclear. This study aimed to investigate the clinical significance of IMMT in KIRC using a combination of supervised learning and multi-omics integration. The supervised learning principle was applied to analyze a TCGA dataset, which was downloaded and split into training and test datasets. The training dataset was used to train the prediction model, while the test and the entire TCGA dataset were used to evaluate its performance. Based on the risk score, the cutoff between the low and high IMMT group was set at median value. A Kaplan-Meier curve, receiver operating characteristic (ROC) curve, principal component analysis (PCA) and Spearman's correlation were conducted to evaluate the prediction ability of the model. Gene Set Enrichment Analysis (GSEA) was used to investigate the critical biological pathways. Immunogenicity, immunological landscape and single-cell analysis were performed to examine the TIME. Databases including Gene Expression Omnibus (GEO), Human Protein Atlas (HPA) and Clinical Proteomic Tumor Analysis Consortium (CPTAC) were employed for inter-database verification. Pharmacogenetic prediction was analyzed via single-guide RNA (sgRNA)-based drug sensitivity screening using Q-omics v.1.30. Low expressions of IMMT in tumor predicted dismal prognosis in KIRC patients and correlated with KIRC progression. GSEA revealed that low expressions of IMMT were implicated in mitochondrial inhibition and angiogenetic activation. In addition, low IMMT expressions had associations with reduced immunogenicity and an immunosuppressive TIME. Inter-database verification corroborated the correlation between low IMMT expressions, KIRC tumors and the immunosuppressive TIME. Pharmacogenetic prediction identified lestaurtinib as a potent drug for KIRC in the context of low IMMT expressions. This study highlights the potential of IMMT as a novel biomarker, prognostic predictor and pharmacogenetic predictor to inform the development of more personalized and effective cancer treatments. Additionally, it provides important insights into the role of IMMT in the mechanism underlying mitochondrial activity and angiogenesis development in KIRC, which suggests IMMT as a promising target for the development of new therapies.


Assuntos
Carcinoma de Células Renais , Neoplasias Renais , Humanos , Medicina de Precisão , Prognóstico , Relevância Clínica , Multiômica , Proteômica , Carcinoma de Células Renais/tratamento farmacológico , Carcinoma de Células Renais/genética , Neoplasias Renais/tratamento farmacológico , Neoplasias Renais/genética , Proteínas Mitocondriais , Aprendizado de Máquina Supervisionado , Rim , Microambiente Tumoral/genética , Proteínas Musculares
16.
J Transl Med ; 21(1): 189, 2023 03 10.
Artigo em Inglês | MEDLINE | ID: mdl-36899366

RESUMO

BACKGROUND: The inner membrane mitochondrial protein (IMMT) is a central unit of the mitochondrial contact site and cristae organizing system (MICOS). While researchers continue to demonstrate the physiological function of IMMT in regulating mitochondrial dynamics and preserving mitochondrial structural integrity, the roles of IMMT in clinicopathology, the tumor immune microenvironment (TIME), and precision oncology in breast cancer (BC) remain unclear. METHODS: Multi-omics analysis was used here to evaluate the diagnostic and prognostic value of IMMT. Web applications aimed at analyzing the whole tumor tissue, single cells, and spatial transcriptomics were used to examine the relationship of IMMT with TIME. Gene set enrichment analysis (GSEA) was employed to determine the primary biological impact of IMMT. Experimental verification using siRNA knockdown and clinical specimens of BC patients confirmed the mechanisms behind IMMT on BC cells and the clinical significance, respectively. Potent drugs were identified by accessing the data repositories of CRISPR-based drug screenings. RESULTS: High IMMT expression served as an independent diagnostic biomarker, correlated with advanced clinical status, and indicated a poor relapse-free survival (RFS) rate for patients with BC. Although, the contents of Th1, Th2, MSC, macrophages, basophil, CD4 + T cell and B cell, and TMB levels counteracted the prognostic significance. Single-cell level and whole-tissue level analyses revealed that high IMMT was associated with an immunosuppressive TIME. GSEA identified IMMT perturbation as involved in cell cycle progression and mitochondrial antioxidant defenses. Experimental knockdown of IMMT impeded the migration and viability of BC cells, arrested the cell cycle, disturbed mitochondrial function, and increased the ROS level and lipid peroxidation. The clinical values of IMMT were amenable to ethnic Chinese BC patients, and can be extrapolated to some other cancer types. Furthermore, we discovered that pyridostatin acted as a potent drug candidate in BC cells harboring an elevated IMMT expression. CONCLUSION: This study combined a multi-omics survey with experimental verification to reveal the novel clinical significance of IMMT in BC, demonstrating its role in TIME, cancer cell growth and mitochondrial fitness, and identified pyridostatin as a promising drug candidate for the development of precision medicine.


Assuntos
Neoplasias da Mama , Humanos , Feminino , Neoplasias da Mama/patologia , Multiômica , Recidiva Local de Neoplasia , Medicina de Precisão , Proteínas Mitocondriais/genética , Microambiente Tumoral , Proteínas Musculares/metabolismo
18.
Arch Clin Neuropsychol ; 38(6): 891-903, 2023 Aug 24.
Artigo em Inglês | MEDLINE | ID: mdl-36796801

RESUMO

OBJECTIVE: Despite the relatively high prevalence of attention deficit hyperactivity disorder (ADHD), the impairment of ADHD in women is underestimated due to the different ways the phenomenon manifests compared to traditional male symptoms. In order to close the gender gap in diagnosis and treatment, this study aims to explore the impact of gender on auditory and visual attention in children with and without ADHD. METHOD: A total of 220 children with and without ADHD participated in this study. Their auditory and visual attention performances were analyzed by comparative computerized auditory and visual subtests. RESULTS: Auditory and visual attention performance in children with and without ADHD did affect by gender, including typically developing (TD) boys are better than TD girls at distinguishing visual targets from non-target stimuli. When performing attention tasks, TD girls generally maintained a cautious response, which was different from TD boys, who generally adopted positive response methods. ADHD girls suffered from more serious auditory inattention problems than ADHD boys; however, ADHD boys suffered from more auditory and visual impulsive problems than ADHD girls. The internal attention problems of female ADHD children were broader than that of their male ADHD peers and were also more severe, especially in problems of auditory omission and auditory response acuity. CONCLUSIONS: ADHD children had a significant gap in auditory and visual attention performance compared to TD children. The research results support the impact of gender on the performance of auditory and visual attention in children with and without ADHD.


Assuntos
Transtorno do Deficit de Atenção com Hiperatividade , Humanos , Masculino , Feminino , Criança , Transtorno do Deficit de Atenção com Hiperatividade/complicações , Transtorno do Deficit de Atenção com Hiperatividade/diagnóstico , Fatores Sexuais , Testes Neuropsicológicos , Caracteres Sexuais
19.
Molecules ; 28(2)2023 Jan 14.
Artigo em Inglês | MEDLINE | ID: mdl-36677898

RESUMO

It has been shown that phosphodiesterase 5 (PDE5) inhibitors have anticancer effects in a variety of malignancies in both in vivo and in vitro experiments. The role of cGMP elevation in colorectal carcinoma (CRC) has been extensively studied. Additionally, DNA topoisomerase II (Topo II) inhibition is a well-established mechanism of action that mediates the effects of several approved anticancer drugs such as doxorubicin and mitoxantrone. Herein, we present 9-benzylaminoacridine derivatives as dual inhibitors of the PDE5 and Topo II enzymes. We synthesized 31 derivatives and evaluated them against PDE5, whereby 22 compounds showed micromolar or sub-micromolar inhibition. The anticancer activity of the compounds was evaluated with the NCI 60-cell line testing. Moreover, the effects of the compounds on HCT-116 colorectal carcinoma (CRC) were extensively studied, and potent compounds against HCT-116 cells were studied for their effects on Topo II, cell cycle progression, and apoptosis. In addition to exhibiting significant growth inhibition against HCT116 cells, compounds 11, 12, and 28 also exhibited the most superior Topo II inhibitory activity and low micromolar PDE5 inhibition and affected cell cycle progression. Knowing that compounds that combat cancer through multiple mechanisms are among the best candidates for effective therapy, we believe that the current class of compounds merits further optimization and investigation to unleash their full therapeutic potential.


Assuntos
Antineoplásicos , Neoplasias do Colo , Inibidores da Fosfodiesterase 5 , Inibidores da Topoisomerase II , Humanos , Antineoplásicos/farmacologia , Linhagem Celular Tumoral , Proliferação de Células , Neoplasias do Colo/tratamento farmacológico , Nucleotídeo Cíclico Fosfodiesterase do Tipo 5/metabolismo , DNA Topoisomerases Tipo II/metabolismo , Ensaios de Seleção de Medicamentos Antitumorais , Estrutura Molecular , Relação Estrutura-Atividade , Inibidores da Topoisomerase II/farmacologia , Inibidores da Fosfodiesterase 5/farmacologia
20.
Nanoscale ; 15(6): 2586-2594, 2023 Feb 09.
Artigo em Inglês | MEDLINE | ID: mdl-36691938

RESUMO

Since quantum computers have been gradually introduced in countries around the world, the development of the many related quantum components that can operate independently of temperature has become more important for enabling mature products with low power dissipation and high efficiency. As an alternative to studying cryo-CMOSs (complementary metal-oxide-semiconductors) to achieve this goal, quantum tunneling devices based on 2D materials can be examined instead. In this work, a vertical graphene-based quantum tunneling transistor has been used as a frequency modulator. The transistor can operate via different quantum tunneling mechanisms and generates, by applying the appropriate bias, voltage-resistance curves characteristic of variable nonlinear resistance for both base and emitter voltages. We experimentally demonstrate frequency modulation from input signals over the range of 100 kHz to 10 MHz, enabling a tunable frequency doubler or tripler in just a single transistor. This frequency multiplication with a tunneling mechanism makes the graphene-based tunneling device a promising option for frequency electronics in the emerging field of quantum technologies.

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