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1.
Neurogenetics ; 25(2): 119-130, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38388889

RESUMO

The terms developmental epileptic encephalopathy with spike-and-wave activation in sleep (DEE-SWAS) and epileptic encephalopathy with spike-and-wave activation in sleep (EE-SWAS) designate a spectrum of conditions that are typified by different combinations of motor, cognitive, language, and behavioral regression linked to robust spike-and-wave activity during sleep. In this study, we aimed at describing the clinical and molecular findings in "(developmental) epileptic encephalopathy with spike-and-wave activation in sleep" (D)EE-SWAS) patients as well as at contributing to the genetic etiologic spectrum of (D)EE-SWAS. Single nucleotide polymorphism (SNP) array and whole-exome sequencing (WES) techniques were used to determine the underlying genetic etiologies. Of the 24 patients included in the study, 8 (33%) were female and 16 (67%) were male. The median age at onset of the first seizure was 4 years and the median age at diagnosis of (D)EE-SWAS was 5 years. Of the 24 cases included in the study, 13 were compatible with the clinical diagnosis of DEE-SWAS and 11 were compatible with the clinical diagnosis of EE-SWAS. Abnormal perinatal history was present in four cases (17%), and two cases (8%) had a family history of epilepsy. Approximately two-thirds (63%) of all patients had abnormalities detected on brain computerized tomography/magnetic resonance (CT/MR) imaging. After SNP array and WES analysis, the genetic etiology was revealed in 7 out of 24 (29%) cases. Three of the variants detected were novel (SLC12A5, DLG4, SLC9A6). This study revealed for the first time that Smith-Magenis syndrome, SCN8A-related DEE type 13 and SLC12A5 gene variation are involved in the genetic etiology of (D)EE-SWAS. (D)EE-SWAS is a genetically diverse disorder with underlying copy number variations and single-gene abnormalities. In the current investigation, rare novel variations in genes known to be related to (D)EE-SWAS and not previously reported genes to be related to (D)EE-SWAS were discovered, adding to the molecular genetic spectrum. Molecular etiology enables the patient and family to receive thorough and accurate genetic counseling as well as a personalized medicine approach.


Assuntos
Sequenciamento do Exoma , Sono , Humanos , Masculino , Feminino , Criança , Turquia , Pré-Escolar , Sono/genética , Polimorfismo de Nucleotídeo Único , Eletroencefalografia , Espasmos Infantis/genética , Lactente , Estudos de Coortes , Epilepsia/genética , Adolescente
2.
J Ethn Subst Abuse ; : 1-18, 2023 Oct 09.
Artigo em Inglês | MEDLINE | ID: mdl-37812504

RESUMO

Substance misuse is an alarming issue worldwide that causes serious problems at both the individual and societal levels, placing a burden on public health systems and economies. Understanding the predictors of substance misuse may help prevent it and may be an adjunct to treatment. The present study examined the relationship among impulsivity, emotion dysregulation, generalized anxiety disorder, and substance misuse. A total of 462 participants age between 18 and 74 years (M = 33.67, SD = 12.91) from 49 cities across Türkiye, completed the measures of impulsivity, emotion dysregulation, generalized anxiety disorder, and substance misuse. Structural equation modeling indicated that impulsivity, emotion dysregulation, and generalized anxiety have a significant predictive role in substance misuse. Further, emotion dysregulation and generalized anxiety disorder mediate the relationship between impulsivity and substance misuse. These findings suggest that noticing and treating impulsivity, emotion dysregulation, and generalized anxiety may minimize the effects of substance misuse.

3.
Appl Res Qual Life ; 18(2): 833-847, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36275044

RESUMO

Doomscrolling is a fairly new concept in mental health research which has attracted significant attention in recent years. This paper consists of three separate studies examining doomscrolling. In Study I (N = 378), both 15-item and 4-item forms of Doomscrolling Scale (DS) were confirmed by confirmatory factor analysis. Item Response Analysis demonstrated that all items had strong discriminative power. Different reliability coefficients supported the high reliability of DS. In Study II (N = 419), both correlation and network analysis indicated that doomscrolling was significantly associated with big five personality traits, social media addiction, fear of missing out, and some features of social media usage. In Study III (N = 460), the relationship of doomscrolling with psychological distress and wellbeing indicators -life satisfaction, mental well-being and harmony in life- were investigated. Structural equation modeling indicated that the relationship between doomscrolling and wellbeing indicators were mediated by psychological distress. This comprehensive and pioneering study on doomscrolling has highlighted the individual and social impacts of doomscrolling.

4.
Mol Syndromol ; 13(4): 270-281, 2022 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-36158059

RESUMO

Introduction: The α subunit of voltage-gated sodium channels in mammals is encoded by 9 different genes, and variations in the SCN1A, SCN2A, SCN3A, and SCN8A genes highly expressed in the CNS have been associated with epilepsy phenotypes. This study aimed at investigating the frequency of SCN1A gene variations in Dravet syndrome (DS) and GEFS+ spectrum phenotype cases and discussing the molecular results in the context of genotype-phenotype correlation. Methods: Fifteen patients diagnosed with DS and 54 patients meeting the GEFS+ spectrum criteria were included in this study. All patients were evaluated by next-generation sequencing and multiplex ligation-dependent probe amplification using an SCN1A gene commercial kit. Results: A total of 17 different variants were detected in 18 index cases (26%), of which 7 were novel variations (p.M1R, p.M147T, p.I767L, p.N1391Ifs*5, p.R1886G, p.E1915G, p.R1933Q). Of the 18 cases with variation in the SCN1A gene, 12 had DS and 6 had GEFS+ phenotype. The variations were de novo in all DS cases and in 1 case with a GEFS+ phenotype; in 5 GEFS+ cases, the variant was inherited from the affected parent. Discussion: This study contributes to the variation spectrum in cases with DS and GEFS+ phenotype with the novel variants detected. SCN1A genetic analysis can help in determining whether antiseizure medication should be selected or avoided in cases with variations. The elucidation of the molecular etiology makes it possible to provide the family with effective genetic counseling for future pregnancies.

5.
Epilepsy Behav ; 135: 108877, 2022 10.
Artigo em Inglês | MEDLINE | ID: mdl-35985165

RESUMO

BACKGROUND: Levetiracetam, a widely used anticonvulsant drug in children and adolescents, has been associated with irritability, psychosocial symptoms, and low quality of life, which are also influenced by other epilepsy variables. PURPOSE: The objective of this study was to investigate the level of treatment-related irritability in adolescents receiving levetiracetam, and to evaluate the relationship between irritability levels and psychosocial symptoms, and quality of life. METHODS: A cross-sectional, case-control study was conducted. Consecutive adolescent patients with epilepsy aged 11-17 years with partial or generalized seizures, treated with either levetiracetam or valproic acid for at least 6 months, and healthy controls were recruited. The Affective Reactivity Index parent report and self-report, Strengths and Difficulties Questionnaire, and Pediatric Quality of Life Inventory-Psychosocial subscale were utilized to assess irritability, psychosocial symptoms, and functioning. RESULTS: A total of 120 participants were analyzed; 33 patients in the LEV group, 45 patients in the VPA group, and 42 healthy controls. Both self and parent report irritability levels of the LEV group were found to be significantly higher than those of healthy controls. The irritability levels of the LEV and VPA groups were not statistically different, but still the LEV group had higher irritability levels on both scales. In the LEV group, irritability was positively correlated with behavioral, emotional, and attention/hyperactivity problems, and also negatively correlated with psychosocial quality of life. CONCLUSION: Adolescents with epilepsy using LEV have a high level of irritability and this is associated with some psychosocial symptoms and poor quality of life.


Assuntos
Epilepsia , Piracetam , Adolescente , Anticonvulsivantes/efeitos adversos , Estudos de Casos e Controles , Criança , Estudos Transversais , Epilepsia/tratamento farmacológico , Epilepsia/psicologia , Humanos , Levetiracetam/uso terapêutico , Piracetam/efeitos adversos , Qualidade de Vida , Ácido Valproico/uso terapêutico
6.
Acta Neurol Belg ; 122(4): 1043-1047, 2022 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-34427875

RESUMO

AIM: To present the etiological evaluation results of our acute benign childhood myositis cases. MATERIALS AND METHODS: Children, who were referred to pediatric neurology outpatient clinic in Maternity and Children's Hospital, with difficulty in walking and high creatinine kinase levels were evaluated. Viral and bacterial serological evaluation of children were performed by real-time polymerase chain reaction method. RESULTS: Twenty-five children (21 M,4 F) included in the study. The most common complaints were walking difficulty and tenderness, pain on the gastrocnemius muscles. Their creatine kinase levels were between 216 and 8770 IU. Twenty-two children were hospitalized. Analgesic, intravenous fluid, antibiotic and/or antiviral drugs were given. The most common etiologies were influenza A and B. One children was diagnosed as suspected COVID-19 by the symptoms and the findings in thorax computerized tomography but the SARS-CoV-2 PCR and antibody tests were negative. CONCLUSION: School-aged children admitted to hospital with walking difficulty generally after an upper respiratory tract infection with a moderate creatine kinase elevation should remind at first acute benign myositis. Resolution of the complaints in a short time and normalisation of the biochemical markers will prevent unnecessary tests. Endemic and pandemic infections may cause this entity as well.


Assuntos
Influenza Humana , Miosite , COVID-19 , Criança , Creatina Quinase , Humanos , Influenza Humana/complicações , Influenza Humana/diagnóstico , Miosite/diagnóstico , Miosite/etiologia
7.
Int J Ment Health Addict ; 20(4): 2151-2164, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-33230394

RESUMO

Hopelessness is an important vulnerability factor for depressive symptomology and suicidal ideations. It may also play an important role in the fear of coronavirus 2019 (COVID-19). Therefore, the present study tested the mediating role of mindful awareness and humor (both identified as coping strategies for dealing with stressful situations) in the relationship between fear of COVID-19 and hopelessness. Participants comprised 786 Turkish individuals (562 females and 224 males; aged between 18 and 67 years) from 71 of 81 cities in Turkey. An online convenience sampling method was used to recruit participants. Participants completed surveys including the Fear of COVID-19 Scale, Beck Hopelessness Scale, Mindful Attention Awareness Scale, and Coping Humor Scale. The model was tested using structural equation modeling (SEM) and utilizing bootstrapping. The results of SEM showed that the effect of fear of COVID-19 on hopelessness was partly mediated by mindfulness and humor, and which was supported by bootstrapping. Therefore, higher fear of COVID-19 was associated with lower mindfulness and humor. In turn, lower mindfulness and humor were related with higher hopelessness. Findings are discussed in the context of COVID-19 and the hopelessness literature, and practical implications for counselors are also provided.

8.
J Pediatr Nurs ; 63: e44-e49, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-34782155

RESUMO

INTRODUCTION: Childhood poisoning is one of the leading causes of applications to ED and is a preventable cause of morbidity and mortality. The characteristics of poisoning may differ by geographic region, season, and the sociocultural aspects of the community and age groups. METHOD: Poisoned patients age ≤ 18 years admitted to the ED January 2018-December 2019, were evaluated retrospectively. RESULTS: Of 170 cases, mean age was 7.48 ± 5.54 years. Of the cases, 0-5 years (44.1%), 6-12 years (24.7%), and 13-18 years (31.2%); most were female (58.2%). Causes were accidental (72.9%), intentional (24.1%), and substance use (2.9%). Accidental cases were all patients age 0-5 years, 31.8% of age 6-12 years, and 24.5% of age 13-18 years. Drugs caused 72.9% of cases, primarily analgesics (22.4%), among which nonsteroidal anti-inflammatory drugs were most common (12.4%). Intentional poisoning by repeated drug intake caused 5.9% of cases. Rat poison caused 7.1% of non-drug cases. Treatment was gastric lavage (52.4%) and oral activated charcoal (45.9%). CONCLUSION: As a result of the study, it was determined that accidental drug intake was the most common reason for children to apply to the ED due to acute poisoning in our region. Childhood poisoning can be prevented by measures to be taken by the environment, family, and healthcare professionals. PRACTICE IMPLICATIONS: The fact that children's acute poisoning cases are mostly accidental in our region shows that it is important to raise the awareness of parents to reduce acute poisoning and alleviate its negative consequences.


Assuntos
Serviço Hospitalar de Emergência , Intoxicação , Acidentes , Animais , Criança , Feminino , Hospitalização , Humanos , Intoxicação/epidemiologia , Intoxicação/etiologia , Intoxicação/terapia , Ratos , Estudos Retrospectivos , Turquia/epidemiologia
9.
J Oral Facial Pain Headache ; 35(1): 62-71, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33730128

RESUMO

AIMS: To investigate perceived expressed emotion (EE) and self-esteem in adolescents with primary headaches and to assess the psychologic factors, especially perceived EE, that may play a mediating role in the relationship between pain severity and psychosocial quality of life (QoL). METHODS: The sample of this single-center cross-sectional case-control study consisted of 102 adolescents with migraine without aura, 36 adolescents with tension-type headache (TTH), 62 age- and sex-matched healthy adolescents, and their parents. Perceived EE was evaluated with the Shortened Level of Expressed Emotion Scale (SLEES). The Rosenberg Self-Esteem Scale (RSS) was used to assess the self-esteem of the participants. RESULTS: There were significant differences in both SLEES (F [2.199] = 7.913, P < .001) and RSS (F [2.199] = 8.138, P < .001) scores between the groups. When the two groups were compared in terms of SLEES score, adolescents with migraine and TTH had significantly higher levels of perceived EE and lower levels of self-esteem than their healthy peers. In mediation analyses, RSS and SLEES scores were found to be partial mediating factors in the relationship between pain severity and psychosocial QoL. CONCLUSION: Adolescents with migraine and TTH had higher perceived EE and lower self-esteem than their healthy peers. The most important result of this study was the demonstration that self-esteem and perceived EE can be two factors that play a mediating role in the relationship between headache and psychosocial QoL.


Assuntos
Transtornos de Enxaqueca , Cefaleia do Tipo Tensional , Adolescente , Estudos de Casos e Controles , Estudos Transversais , Emoções Manifestas , Humanos , Qualidade de Vida
10.
Arch Pediatr ; 28(4): 296-300, 2021 May.
Artigo em Inglês | MEDLINE | ID: mdl-33715934

RESUMO

INTRODUCTION: Infantile hemangioma (IH) is a common vascular tumor in children. It is reported that IHs are associated with immunochemical markers such as vascular endothelial growth factor (VEGF)-A, glucose transporter isoform 1 (GLUT1), and insulin-like growth factor-2 (IGF-2). MATERIAL AND METHODS: This cross-sectional study focused on pediatric patients with IH. A total of 46 patients (mean age 14.2±21.9 months) with IH and 45 healthy controls (mean age 21.8±15.08 months) were enrolled. Demographic data, clinical findings, and laboratory parameters were recorded. Blood samples were collected. Serum GLUT1, IGF-2, VEGF-A, fibroblast growth factor 1 (FGF1), and angiopoietin 2 levels were assessed by enzyme-linked immunosorbent assay. RESULTS: Serum GLUT1, IGF-2, and VEGF-A levels were significantly higher in patients with IH than in healthy controls (8.80±4.07pg/mL vs. 5.66±4.34pg/mL, 281.10±84.12pg/mL vs. 234.19±75.38pg/mL, 1196.99±389.34pg/mL vs. 996.99±349.16pg/mL, respectively, p=0.026, p=0.030, and p=0.036). Serum GLUT1, IGF-2, and VEGF-A levels in patients with complicated hemangioma were significantly higher than in healthy controls (9.69±3.94pg/mL vs. 5.66±4.34pg/mL, 289.94±83.18pg/mL vs. 234.19±75.38pg/mL, 1276.22±388.24pg/mL vs. 996.99±349.16pg/mL, respectively, p=0.017, p=0.022, and p=0.011). Serum GLUT1, IGF-2, and VEGF-A levels in patients with hemangioma receiving propranolol treatment were significantly higher than in healthy controls. Serum FGF1 levels were higher in patients with IH, complicated hemangioma, and hemangioma receiving propranolol treatment than in healthy controls but the difference was not statistically significantly. CONCLUSION: Serum GLUT1, IGF-2, and VEGF-A levels were positively correlated with disease severity in patients with hemangioma, for example, in complicated hemangioma and hemangioma requiring propranolol treatment. However, further research on larger and different age subgroups is warranted to assess these markers.


Assuntos
Angiopoietina-2/sangue , Fator 1 de Crescimento de Fibroblastos/sangue , Transportador de Glucose Tipo 1/sangue , Hemangioma/tratamento farmacológico , Fator de Crescimento Insulin-Like II/análise , Propranolol/uso terapêutico , Fator A de Crescimento do Endotélio Vascular/sangue , Neoplasias Vasculares/tratamento farmacológico , Angiopoietina-2/uso terapêutico , Biomarcadores/sangue , Criança , Pré-Escolar , Estudos Transversais , Ensaio de Imunoadsorção Enzimática , Fator 1 de Crescimento de Fibroblastos/uso terapêutico , Hemangioma/sangue , Hemangioma/patologia , Humanos , Lactente , Masculino , Fator A de Crescimento do Endotélio Vascular/uso terapêutico , Neoplasias Vasculares/sangue , Neoplasias Vasculares/patologia
11.
Int J Ment Health Addict ; 19(6): 1980-1988, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-32395095

RESUMO

The world is currently experiencing a pandemic of an infectious disease called COVID-19 which has drawn global intensive attention. While global attention is largely focusing on the effects of the coronavirus on physical health, the impacts of the coronavirus on psychological health cannot be overlooked. Therefore, this study aims to adapt the Fear of COVID-19 Scale into Turkish and investigate the relationships between fear of COVID-19, psychological distress, and life satisfaction. Data were collected by convenience sampling method, which allowed us to reach total 1304 participants, aged between 18 and 64 years, from 75 cities in Turkey. In the adaptation process of the Fear of COVID-19 Scale, confirmatory factor analysis, Item Response Theory, convergent validity, and reliability (Cronbach's α, McDonald's ω, Guttmann's λ6, and composite reliability) analyses were performed. Additionally, the mediating role of psychological distress on the relationship between fear of COVID-19 and life satisfaction was tested. The uni-dimensionality of the 7-item scale was confirmed on a Turkish sample. Item Response Theory revealed that all items were coherent and fit with the model. The results indicated that the Turkish version of the scale had satisfactory reliability coefficients. The fear of COVID-19 was found to be associated with psychological distress and life satisfaction. Results indicated that the Turkish version of the Fear of COVID-19 Scale had strong psychometric properties. This scale will allow mental health professionals to do research on the psychological impacts of COVID-19 in Turkey.

12.
Neurol Sci ; 42(6): 2481-2485, 2021 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-33104909

RESUMO

BACKGROUND AND OBJECTIVES: The ketogenic diet (KD) is a special diet that is rich in fat, and poor in protein and carbohydrates. KD is the first-line treatment for some metabolic disorders, and is also used in resistant epilepsy, autism, cancer, Parkinson, Alzheimer's diseases, and stroke. The KD team consists of a doctor (child neurologist), nurse, and dietician. After diet adjustment, family training, metabolic tests, consultations, material supply, the initial and follow-up stages are performed by this team. METHOD: Retrospective data analyses of patients followed at ketogenic diet outpatient clinic were made. RESULTS: Fourteen patients (6F, 8M) continued their KD treatment, and nine (4F, 5M) of them stopped the treatment. KD treatment duration for those who continued KD was between 1 and 24 months (mean 7.1, median 4), and KD duration of those who left was between 0.5 and 12 months (mean 5, median 5). Three patients became seizure-free, seven patients had ≥ 50% reduction in their seizures, and four patients had no change in seizure. Anti-epileptic drugs could be reduced in five patients. Improvement in perception and social behaviour of the children was expressed by the families. Although one of the patients was seizure-free and the others had 75% decrease in seizures, they left KD due to frequent infection and family desire. The other seven patients who left KD had no changes in their seizures, but four of them continued KD in less than 2 months, and two of them only for 15 days. Weight loss, family problems, infection, and financial concerns were the reasons for them leaving. CONCLUSION: Today, although the approach is changing, KD still comes to mind for the most resistant, troubled patients. Stopping the patients' seizures, opening their perceptions, and reducing the medications are satisfactory results. We wanted to share our small group of patients and their results in the hope of expanding the ketogenic diet.


Assuntos
Dieta Cetogênica , Epilepsia Resistente a Medicamentos , Criança , Humanos , Lactente , Estudos Retrospectivos , Resultado do Tratamento , Universidades
13.
Neurol Sci ; 41(9): 2461-2470, 2020 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-32212010

RESUMO

OBJECTIVE: The aim of this study was to investigate self- and parent-reported irritability in adolescents with migraine and to evaluate the relationship between self- and parent-reported irritability and psychological symptoms in adolescents with migraine. METHODS: The sample of this single-center cross-sectional case-control study consisted of 71 adolescents with migraine (who were followed in a pediatric neurology clinic) and their parents. The control group consisted of 41 age- and sex-matched healthy adolescents and their parents. RESULTS: It was observed that there were significant differences in both self- (p < 0.001) and parent-reported (p < 0.001) irritability scores between the migraine and control groups. When the two groups were compared in terms of psychological symptoms, adolescents with migraine had significantly higher levels of anxiety (p < 0.001) and emotional problems (p < 0.001) than their healthy peers. This significant difference persisted even after controlling for confounding factors such as age, gender, family income, and maternal and paternal educational level. Our results revealed a moderate positive correlation between irritability scores and anxiety scores (r = 0.522, p < 0.001) and between irritability scores and emotional/behavioral problem scores (r = 0.487, p < 0.001) in the migraine group. In addition to these results, the odds ratios of self-reported irritability scores and emotional problem scores for migraine were 1.31 and 1.41, respectively. CONCLUSION: The levels of anxiety, emotional/behavioral, and attention deficit/hyperactivity problems increased as the levels of irritability increased in the migraine group, suggesting that the psychosocial functionality of these adolescents may be impaired. Therefore, all adolescents with migraine (especially those with irritability) may have need of psychosocial support.


Assuntos
Transtornos de Enxaqueca , Adolescente , Ansiedade/epidemiologia , Estudos de Casos e Controles , Criança , Estudos Transversais , Humanos , Transtornos de Enxaqueca/epidemiologia , Pais
14.
Case Rep Hematol ; 2019: 2802141, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31885952

RESUMO

The clinical presentation of Non-Hodgkin lymphoma (NHL) is frequently associated with the involvement of the abdomen and mediastinal lymphadenopathies, but rarely the kidney, ovaries, and testicles. Here, we report a rare case of T-cell lymphoblastic lymphoma (T-LBL) presenting with bilateral nephromegaly without acute renal failure (ARF) as the first manifestation. A 30-month-old boy was admitted to the department of pediatric nephrology exhibiting abdominal distension. Physical examination revealed bilateral renal palpation up to the inguinal region. Elevated lactate dehydrogenase (LDH) levels were detected in his blood. Bilateral diffuse enlarged kidneys with increased hypoechogenicity were found on abdominal ultrasonography. In the next step, contrast-enhanced computed tomography showed diffusely enlarged kidneys, which were compressing the intestinal bowels and midline structures. Renal biopsy demonstrated precursor T-LBL. We wish to report our patient with renal T-LBL presenting with diffuse renal enlargement, which has rarely been reported in the literature.

15.
ACS Appl Mater Interfaces ; 11(47): 44474-44486, 2019 Nov 27.
Artigo em Inglês | MEDLINE | ID: mdl-31609580

RESUMO

The development of solution-processable fluorescent small molecules with highly efficient deep-blue electroluminescence is of growing interest for organic light-emitting diode (OLED) applications. However, high-performance deep-blue fluorescent emitters with external quantum efficiencies (EQEs) over 5% are still scarce in OLEDs. Herein, a novel highly soluble oligo(p-phenyleneethynylene)-based small molecule, 1,4-bis((2-cyanophenyl)ethynyl)-2,5-bis(2-ethylhexyloxy)benzene (2EHO-CNPE), is designed, synthesized, and fully characterized as a wide band gap (2.98 eV) and highly fluorescent (ΦPL = 0.90 (solution) and 0.51 (solid-state)) deep-blue emitter. The new molecule is functionalized with cyano (-CN)/2-ethylhexyloxy (-OCH2CH(C2H5)C4H9) electron-withdrawing/-donating substituents, and ethynylene is used as a π-spacer to form an acceptor (A)-π-donor (D)-π-acceptor (A) molecular architecture with hybridized local and charge transfer (HLCT) excited states. Physicochemical and optoelectronic characterizations of the new emitter were performed in detail, and the single-crystal structure was determined. The new molecule adopts a nearly coplanar π-conjugated framework packed via intermolecular "C-H···π" and "C-H···N" hydrogen bonding interactions without any π-π stacking. The OLED device based on 2EHO-CNPE shows an EQEmax of 7.06% (EQE = 6.30% at 200 cd/m2) and a maximum current efficiency (CEmax) of 5.91 cd/A (CE = 5.34 cd/A at 200 cd/m2) with a deep-blue emission at CIE of (0.15, 0.09). The electroluminescence performances achieved here are among the highest reported to date for a solution-processed deep-blue fluorescent small molecule, and, to the best of our knowledge, it is the first time that a deep-blue OLED is reported based on the oligo(p-phenyleneethynylene) π-framework. TDDFT calculations point to facile reverse intersystem crossing (RISC) processes in 2EHO-CNPE from high-lying triplet states to the first singlet excited state (T2/T3 → S1) (hot-exciton channels) that enable a high radiative exciton yield (ηr ∼ 69%) breaking the theoretical limit of 25% in conventional fluorescent OLEDs. These results demonstrate that properly designed fluorescent oligo(p-phenyleneethynylenes) can be a key player in high-performance deep-blue OLEDs.

16.
Nanotechnology ; 28(24): 245204, 2017 Jun 16.
Artigo em Inglês | MEDLINE | ID: mdl-28441144

RESUMO

The electrode/organic interface is one of the key factors in attaining superior device performance in organic electronics, and inserting a tailor-made layer can dramatically modify its properties. The use of nano-composite (NC) materials leads to many advantages by combining materials with the objective of obtaining a desirable combination of properties. In this context, zinc oxide/polyethyleneimine (ZnO:PEI) NC film was incorporated as an interfacial layer into inverted bottom-emission organic light emitting diodes (IBOLEDs) and fully optimized. For orange-red emissive MEH-PPV based IBOLEDs, a high power efficiency of 6.1 lm W-1 at a luminance of 1000 cd m-2 has been achieved. Notably, the external quantum efficiency (EQE) increased from 0.1 to 4.8% and the current efficiency (CE) increased from 0.2 to 8.7 cd A-1 with rise in luminance (L) from 1000 to above 10 000 cd m-2 levels when compared to that of pristine ZnO-based devices. An identical device architecture containing a ZnO:PEI NC layer has also been used to successfully fabricate green and blue emissive IBOLEDs. The significant enhancement in the inverted device performance, in terms of luminance and efficiency, is attributed to a good energy-level alignment between the cathode/organic interface which leads to effective carrier balance, resulting in efficient radiative-recombination.

17.
Psicol Reflex Crit ; 30(1): 18, 2017 Sep 04.
Artigo em Inglês | MEDLINE | ID: mdl-32026160

RESUMO

This article presents the adaptation and psychometric evaluation of the Turkish version of Harmony in Life Scale (Turkish-HiL). The present paper investigates (study 1; N 1  = 253) confirmatory factor analysis, measurement invariance; (study 2; N 2  = 231) concurrent validity; (study 3; N 3  = 260) convergent and known-group validities; (study 4; N t - t  = 50) test-retest, Cronbach alpha, and composite reliabilities of the Turkish-HiL. In study 1, based on a confirmatory factor analysis, results confirmed that unidimensional-factor structure. The results suggested that the model demonstrated a configural and metric invariance across the gender groups. In study 2, Turkish-HiL significantly correlated with measures of satisfaction with life, subjective happiness, positive affect, and negative affect. In study 3, Turkish-HiL was predicted positively by flourishing, conversely, negatively predicted by depression, anxiety, and stress. Finally, in study 4, alpha, composite and test-retest reliabilities are acceptable. Overall, the scale presented here may prove useful for satisfactorily assessing, in Turkish, the harmony in life of the university students.

18.
J Infect Public Health ; 10(2): 232-234, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-27452287

RESUMO

HSV 1 encephalitis is the most common cause of sporadic and focal viral encephalitis. Opercular syndrome is characterized by swallowing and speech difficulties which are associated with deterioration of voluntary control of face, pharynx, tongue and chewing muscles. It can be developed in patients with Herpes simplex encephalitis (HSE). Here, a twelve-year-old boy who was diagnosed with HSE and Opercular syndrome, is presented. The patient recovered without sequela as a result of 30 days of intravenous and 10 days of oral acyclovir treatment. It might be important as well, to personalize and elongate the treatment in terms of prognosis.


Assuntos
Aciclovir/administração & dosagem , Antivirais/administração & dosagem , Transtornos de Deglutição/diagnóstico , Transtornos de Deglutição/patologia , Disartria/diagnóstico , Disartria/patologia , Encefalite por Herpes Simples/complicações , Encefalite por Herpes Simples/tratamento farmacológico , Paralisia Facial/diagnóstico , Paralisia Facial/patologia , Criança , Cabeça/diagnóstico por imagem , Humanos , Imageamento por Ressonância Magnética , Masculino
19.
Psicol. reflex. crit ; 30: 18, 2017. tab, fig
Artigo em Inglês | LILACS, Index Psicologia - Periódicos | ID: biblio-909845

RESUMO

This article presents the adaptation and psychometric evaluation of the Turkish version of Harmony in Life Scale (Turkish-HiL). The present paper investigates (study 1; N 1 = 253) confirmatory factor analysis, measurement invariance; (study 2; N 2 = 231) concurrent validity; (study 3; N 3 = 260) convergent and known-group validities; (study 4; N t − t = 50) test-retest, Cronbach alpha, and composite reliabilities of the Turkish-HiL. In study 1, based on a confirmatory factor analysis, results confirmed that unidimensional-factor structure. The results suggested that the model demonstrated a configural and metric invariance across the gender groups. In study 2, Turkish-HiL significantly correlated with measures of satisfaction with life, subjective happiness, positive affect, and negative affect. In study 3, Turkish-HiL was predicted positively by flourishing, conversely, negatively predicted by depression, anxiety, and stress. Finally, in study 4, alpha, composite and test-retest reliabilities are acceptable. Overall, the scale presented here may prove useful for satisfactorily assessing, in Turkish, the harmony in life of the university students. (AU)


Assuntos
Humanos , Masculino , Feminino , Adulto , Comparação Transcultural , Reprodutibilidade dos Testes , Inquéritos e Questionários , Traduções , Turquia
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