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1.
J Clin Psychol ; 2024 Jun 14.
Artigo em Inglês | MEDLINE | ID: mdl-38875442

RESUMO

OBJECTIVES: Quality of life (QOL) is a multidimensional construct including emotional well-being, life satisfaction, and physical health. Individuals with posttraumatic stress disorder (PTSD) consistently report low QOL, highlighting the importance of assessing the effectiveness of first-line PTSD treatments (e.g., exposure-based therapies) on QOL. This meta-analysis examined the efficacy of exposure therapy for PTSD on QOL compared to control conditions (e.g., waitlist, medication, treatment-as-usual) at posttreatment and follow-up (ranging from 1 month to 2 years). METHODS: Building on a previous meta-analysis of exposure-based therapy for PTSD, we searched PsycINFO and Medline in December 2021, July 2022, and March 2023 to include randomized controlled trials of exposure-based treatments for adult PTSD assessing QOL. We screened 295 abstracts for initial eligibility; 20 articles met inclusion criteria and were included (N = 2729 participants). Risk of bias was evaluated using the Cochrane Risk of Bias tool 2.0. RESULTS: At posttreatment, exposure-based therapies showed a medium effect on QOL relative to control conditions (k = 25, g = 0.67). This effect was not observed at follow-up for the small subset of studies with follow-up data (k = 8, g = 0.16). At posttreatment, effect size varied significantly as a function of the control condition (p < .0001). There were no differences in QOL effects across exposure therapies at posttreatment or follow-up (p = .09). CONCLUSION: Exposure therapy was associated with greater improvement in QOL compared to control conditions at posttreatment. Exposure was not superior to control conditions at follow-up, and the longer-term impact of exposure on QOL is unclear. The implications of these findings are discussed, along with the need for more PTSD treatment studies to examine QOL outcomes at posttreatment and follow-up.

2.
Peptides ; 176: 171197, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38493922

RESUMO

Amylin, a pancreatic hormone, is well-established to suppress feeding by enhancing satiation. Pramlintide, an amylin analog that is FDA-approved for the treatment of diabetes, has also been shown to produce hypophagia. However, the behavioral mechanisms underlying the ability of pramlintide to suppress feeding are unresolved. We hypothesized that systemic pramlintide administration in rats would reduce energy intake, specifically by reducing meal size. Male rats were given b.i.d. administration of intraperitoneal pramlintide or vehicle for 1 week, and chow intake, meal patterns, and body weight were monitored throughout the test period. Consistent with our hypothesis, pramlintide decreased chow intake mainly via suppression of meal size, with corresponding reductions in meal duration on several days. Fewer effects on meal number or feeding rate were detected. Pramlintide also reduced weight gain over the 1-week study. These results highlight that the behavioral mechanisms by which pramlintide produces hypophagia are similar to those driven by amylin itself, and provide important insight into the ability of this pharmacotherapy to promote negative energy balance over a period of chronic administration.


Assuntos
Comportamento Alimentar , Polipeptídeo Amiloide das Ilhotas Pancreáticas , Animais , Polipeptídeo Amiloide das Ilhotas Pancreáticas/farmacologia , Masculino , Ratos , Comportamento Alimentar/efeitos dos fármacos , Ingestão de Alimentos/efeitos dos fármacos , Ratos Sprague-Dawley , Peso Corporal/efeitos dos fármacos , Ingestão de Energia/efeitos dos fármacos
3.
Am J Hum Genet ; 110(12): 2103-2111, 2023 Dec 07.
Artigo em Inglês | MEDLINE | ID: mdl-37924809

RESUMO

Hereditary spastic parapareses (HSPs) are clinically heterogeneous motor neuron diseases with variable age of onset and severity. Although variants in dozens of genes are implicated in HSPs, much of the genetic basis for pediatric-onset HSP remains unexplained. Here, we re-analyzed clinical exome-sequencing data from siblings with HSP of unknown genetic etiology and identified an inherited nonsense mutation (c.523C>T [p.Arg175Ter]) in the highly conserved RAB1A. The mutation is predicted to produce a truncated protein with an intact RAB GTPase domain but without two C-terminal cysteine residues required for proper subcellular protein localization. Additional RAB1A mutations, including two frameshift mutations and a mosaic missense mutation (c.83T>C [p.Leu28Pro]), were identified in three individuals with similar neurodevelopmental presentations. In rescue experiments, production of the full-length, but not the truncated, RAB1a rescued Golgi structure and cell proliferation in Rab1-depleted cells. In contrast, the missense-variant RAB1a disrupted Golgi structure despite intact Rab1 expression, suggesting a dominant-negative function of the mosaic missense mutation. Knock-down of RAB1A in cultured human embryonic stem cell-derived neurons resulted in impaired neuronal arborization. Finally, RAB1A is located within the 2p14-p15 microdeletion syndrome locus. The similar clinical presentations of individuals with RAB1A loss-of-function mutations and the 2p14-p15 microdeletion syndrome implicate loss of RAB1A in the pathogenesis of neurodevelopmental manifestations of this microdeletion syndrome. Our study identifies a RAB1A-related neurocognitive disorder with speech and motor delay, demonstrates an essential role for RAB1a in neuronal differentiation, and implicates RAB1A in the etiology of the neurodevelopmental sequelae associated with the 2p14-p15 microdeletion syndrome.


Assuntos
Haploinsuficiência , Paraplegia Espástica Hereditária , Criança , Humanos , Haploinsuficiência/genética , Mutação , Mutação de Sentido Incorreto/genética , Proteínas rab de Ligação ao GTP/genética , Proteínas rab de Ligação ao GTP/metabolismo , Complexo de Golgi/metabolismo , Paraplegia Espástica Hereditária/genética
4.
Sci Adv ; 9(47): eadi0074, 2023 11 24.
Artigo em Inglês | MEDLINE | ID: mdl-37992166

RESUMO

Chromatin regulation plays a pivotal role in establishing and maintaining cellular identity and is one of the top pathways disrupted in autism spectrum disorder (ASD). The hippocampus, composed of distinct cell types, is often affected in patients with ASD. However, the specific hippocampal cell types and their transcriptional programs that are dysregulated in ASD are unknown. Using single-nucleus RNA sequencing, we show that the ASD gene, lysine demethylase 5A (KDM5A), regulates the development of specific subtypes of excitatory and inhibitory neurons. We found that KDM5A is essential for establishing hippocampal cell identity by controlling a differentiation switch early in development. Our findings define a role for the chromatin regulator KDM5A in establishing hippocampal cell identity and contribute to the emerging convergent mechanisms across ASD.


Assuntos
Transtorno do Espectro Autista , Transtorno Autístico , Humanos , Cromatina/genética , Histonas/genética , Histonas/metabolismo , Transtorno Autístico/genética , Transtorno do Espectro Autista/genética , Diferenciação Celular/genética , Proteína 2 de Ligação ao Retinoblastoma/genética
5.
Indian J Community Med ; 48(3): 413-417, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37469919

RESUMO

Background: "Donation gap" refers to the shortage of organ donors worldwide. The medical/nursing students and various healthcare workers have poor awareness and attitude toward organ donation. Objective: We conducted this study to assess the current level of knowledge and perception regarding cadaver organ donation and transplantation among nursing students and to evaluate the impact of structured training interventions on their baseline knowledge and perception level. Methods: It was a single-group pre-post interventional study done by nursing students of one government and one private nursing college.A pre-tested questionnaire was used as a study tool. Statistical Analysis: Various statistical tests like one-way repeated measure ANOVA, Mauchly's test of sphericity, and Greenhouse-Geisser correction were used. Pairwise comparisons used Bonferroni corrections. Results: The pre-test group had the lowest mean knowledge (50.2346, SD = 15.35188), and immediately after training group had the highest (57.3900, SD = 14.34626). After one month, knowledge decreased but was still higher than pretraining (mean = 52.3607, SD = 13.28141). Conclusions: The positive attitude of nursing students may augment cadaver organ donation and transplantation in the future. The study has also highlighted the further training needs of the participants.

6.
Cell Genom ; 3(7): 100322, 2023 Jul 12.
Artigo em Inglês | MEDLINE | ID: mdl-37492102

RESUMO

Autism spectrum disorder (ASD) is a group of complex neurodevelopmental conditions affecting communication and social interaction in 2.3% of children. Studies that demonstrated its complex genetic architecture have been mainly performed in populations of European ancestry. We investigate the genetics of ASD in an East African cohort (129 individuals) from a population with higher prevalence (5%). Whole-genome sequencing identified 2.13 million private variants in the cohort and potentially pathogenic variants in known ASD genes (including CACNA1C, CHD7, FMR1, and TCF7L2). Admixture analysis demonstrated that the cohort comprises two ancestral populations, African and Eurasian. Admixture mapping discovered 10 regions that confer ASD risk on the African haplotypes, containing several known ASD genes. The increased ASD prevalence in this population suggests decreased heterogeneity in the underlying genetic etiology, enabling risk allele identification. Our approach emphasizes the power of African genetic variation and admixture analysis to inform the architecture of complex disorders.

7.
J Educ Health Promot ; 12: 168, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37404933

RESUMO

BACKGROUND: Hospital-acquired infections (HAIs) are a primary cause of illness and death and increased expenditure due to prolonged hospitalization and poor prognosis. HAI is a global safety concern, according to World Health Organization (WHO). This study assesses the current level of knowledge and perception regarding hospital infection control practices among nursing students and evaluates the impact of structured training interventions on their baseline knowledge and perception level. METHODS AND MATERIALS: It was a single group, a pre-post interventional study done on nursing students of one government and one private nursing college in the year 2021. A pretested questionnaire consisting of was used as a study tool. Various statistical tests like one repeated-measure ANOVA, Mauchly's Test of Sphericity, and Greenhouse-Geisser correction were used. RESULTS: The mean knowledge was minimum in the pretest group (Mean = 79.4430, SD = 17.49746) and maximum immediately after the training group (Mean = 96.5443, SD = 25.42322). But after one month, knowledge decreased; however, it was more than pre-training Knowledge (Mean = 84.4937, SD = 22.40313). CONCLUSIONS: Annual educational/training modules help retain knowledge in hospital infection control practices and HAI prevention. All healthcare workers need regular training.

8.
Trauma Violence Abuse ; 24(4): 2395-2411, 2023 10.
Artigo em Inglês | MEDLINE | ID: mdl-35543662

RESUMO

Topic. Limited research has examined trauma and posttraumatic stress disorder (PTSD) among Asian Indians in the U.S. Thus, we (1) synthesize literature on trauma, PTSD, disparities in treatment for PTSD, the burden of untreated PTSD, and culturally-adapted (CA) PTSD interventions; and (2) discuss recommendations for clinicians/researchers working with this population.Method. We searched two databases using keywords related to Asian Indians, PTSD, and interventions. Of 238 identified articles, we used content from 26 articles to inform our review.Findings. Asian Indians report traumatic experiences before, during, or after immigration to the U.S. and consequential PTSD symptoms. Further, Asian Indians in the U.S. are disproportionately impacted by socio-cultural and economic determinants of poor mental health (e.g., shame/stigma associated with seeking mental health services, few culturally-responsive services), which may contribute to the under-reporting of PTSD and (interpersonal) traumas and less willingness to seek treatment. Additionally, CA PTSD interventions tailored to Asian Indians in the U.S. have not been developed. Socio-cultural considerations that can inform CA PTSD interventions for Asian Indians include: causal conditions (e.g., culturally-rooted beliefs about trauma/PTSD), intervening conditions/barriers (e.g., emotional inhibition), and mitigating/coping strategies (e.g., religious/spiritual practices, cultural idioms of distress). These considerations influence clinician/treatment preferences (e.g., solution-oriented and structured therapy, less emotional exposure). Lastly, we outline recommendations for clinicians/researchers: (1) need for national studies on trauma, PTSD, treatment utilization, and the burden of untreated PTSD; (2) consideration of immigration-related experiences influencing PTSD; (3) consideration of socio-cultural elements for CA PTSD interventions; and (4) need for culturally-valid PTSD assessments.


Assuntos
Transtornos de Estresse Pós-Traumáticos , Humanos , Estados Unidos , Transtornos de Estresse Pós-Traumáticos/terapia , Transtornos de Estresse Pós-Traumáticos/epidemiologia , Saúde Mental , Adaptação Psicológica
9.
Cureus ; 14(11): e31786, 2022 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-36569703

RESUMO

Type II renal tubular acidosis (RTA) is a rare defect in bicarbonate transport that can cause serious metabolic derangements. We report the case of a spontaneous, isolated intraoperative episode of severe type II RTA in an elderly woman who presented for radical neck dissection, mandible excision, and flap creation. Intraoperatively, she developed a stark metabolic acidosis with hypokalemia, progressively worsening base excess, and prolific urine output. Aggressive resuscitation with bicarbonate corrected all metabolic abnormalities. There was no identifiable trigger and the patient was successfully discharged with no further recurrences during hospitalization. The inability to identify the clinical presentation of RTA perioperatively can lead to poor outcomes.

10.
J Consult Clin Psychol ; 90(10): 734-746, 2022 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-36355648

RESUMO

OBJECTIVE: Integrating best practices for health disparities to adapt evidence-based treatments is imperative to adequately meet the needs of diverse cultures, particularly ones that therapists can apply flexibility across multiple diverse communities. METHOD: Using a mixed-methods, community-engaged approach, we examined how a range of community participants (N = 169) defined mental health, perceived barriers to treatment, and used culturally based coping methods to manage their mental health. Phase 1 (n = 49) included qualitative focus group data from five distinct racial/ethnic communities (African immigrants/refugees, Black/African Americans, Hispanics, Pacific Islanders, and American Indians). Phase 2 included quantitative surveys from members of four of these communities (n = 59) and the frontline providers serving them (n = 61). RESULTS: The communities and providers highlighted chronic worry and distress related to daily activities as primary treatment concerns. Further, this mixed-methods data informed our proposed best practice treatment adaptation framework using chronic worry as an example. CONCLUSION: The main aims of this study were to exemplify best practices for addressing mental health inequities in communities of color in terms of (a) conducting health disparities research and (b) applying a treatment adaptation framework for culturally responsive clinical care. Specific features of how this framework was conceived and applied provide a unique and critical view into integrating best practices to address health disparities in diverse communities. (PsycInfo Database Record (c) 2022 APA, all rights reserved).


Assuntos
Participação da Comunidade , Participação dos Interessados , Humanos , Etnicidade , Hispânico ou Latino , Grupos Raciais
11.
Front Chem ; 10: 1003234, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36311433

RESUMO

The emergence of antimicrobial-resistant bacterial strains has led to novel approaches for combating bacterial infections and surface contamination. More specifically, efforts in combining nanotechnology and biomimetics have led to the development of next-generation antimicrobial/antifouling nanomaterials. While nature-inspired nanoscale topographies are known for minimizing bacterial attachment through surface energy and physicochemical features, few studies have investigated the combined inhibitory effects of such features in combination with chemical alterations of these surfaces. Studies describing surface alterations, such as quaternary ammonium compounds (QACs), have also gained attention due to their broad spectrum of inhibitory activity against bacterial cells. Similarly, antimicrobial peptides (AMPs) have exhibited their capacity to reduce bacterial viability. To maximize the functionality of modified surfaces, the integration of patterned surfaces and functionalized exteriors, achieved through physical and chemical surface alterations, have recently been explored as viable alternatives. Nonetheless, these modifications are prone to challenges that can reduce their efficacy considerably in the long term. Their effectiveness against a wider array of microbial cells is still a subject of investigation. This review article will explore and discuss the emerging trends in biomimetics and other antimicrobials while raising possible concerns about their limitations and discussing future implications regarding their potential combined applications.

12.
Transl Behav Med ; 12(9): 919-926, 2022 10 07.
Artigo em Inglês | MEDLINE | ID: mdl-36205469

RESUMO

The COVID-19 pandemic has exacerbated disparities in mental health treatment for people of color in the USA. Meeting the needs of those most burdened by this disparity will require swift and tactical action in partnership with these communities. The purpose of this paper is to describe how a community-based participatory research approach was employed to assess the priorities and needs of four communities of color (African immigrant, Hispanic/Latino, Black/African American, and Pacific Islander) in a major U.S. city. A brief quantitative survey devised jointly by community leaders and the research team was deployed to community members (N = 59) in the fall of 2020. The most endorsed mental health issues across the communities were excessive worry (51%) and stress regarding COVID-19, racism, and immigration policies (49%). The most endorsed physical health concerns included sleep difficulties (44%), headaches, and backaches (each 39%). Physical symptoms predicted the endorsement of a mental health issue above and beyond COVID-19-related hardships, multiplying the odds of reporting an issue by 1.73 per physical health concern endorsed. Based on these findings, the community-research team conceptualized and proposed an evidence-based, effectiveness-implementation hybrid type-2 intervention approach for chronic worry and daily stress. This paper highlights detail on how the community-research team arrived at the proposed multilevel intervention that addresses community-stated barriers to mental health treatment (e.g., preferring trusted health workers to deliver emotional health treatments) and considers the burden of the additional stressful context of COVID-19.


Diverse community members and university researchers collaborated on the development of an equitable intervention approach for community members' mental health needs.


Assuntos
COVID-19 , Emigrantes e Imigrantes , Pesquisa Participativa Baseada na Comunidade , Humanos , Saúde Mental , Pandemias , Estados Unidos/epidemiologia
13.
Mol Metab ; 65: 101586, 2022 11.
Artigo em Inglês | MEDLINE | ID: mdl-36055579

RESUMO

OBJECTIVE: The gut hormone glucose-dependent insulinotropic polypeptide (GIP) stimulates beta cell function and improves glycemia through its incretin actions. GIP also regulates endothelial function and suppresses adipose tissue inflammation through control of macrophage activity. Activation of the GIP receptor (GIPR) attenuates experimental atherosclerosis and inflammation in mice, however whether loss of GIPR signaling impacts the development of atherosclerosis is uncertain. METHODS: Atherosclerosis and related metabolic phenotypes were studied in Apoe-/-:Gipr-/- mice and in Gipr+/+ and Gipr-/- mice treated with an adeno-associated virus expressing PCSK9 (AAV-PCSK9). Bone marrow transplantation (BMT) studies were carried out using donor marrow from Apoe-/-:Gipr-/-and Apoe-/-:Gipr+/+mice transplanted into Apoe-/-:Gipr-/- recipient mice. Experimental endpoints included the extent of aortic atherosclerosis and inflammation, body weight, glucose tolerance, and circulating lipid levels, the proportions and subsets of circulating leukocytes, and tissue gene expression profiles informing lipid and glucose metabolism, and inflammation. RESULTS: Body weight was lower, circulating myeloid cells were reduced, and glucose tolerance was not different, however, aortic atherosclerosis was increased in Apoe-/-:Gipr-/- mice and trended higher in Gipr-/- mice with atherosclerosis induced by AAV-PCSK9. Levels of mRNA transcripts for genes contributing to inflammation were increased in the aortae of Apoe-/-:Gipr-/- mice and expression of a subset of inflammation-related hepatic genes were increased in Gipr-/- mice treated with AAV-PCSK9. BMT experiments did not reveal marked atherosclerosis, failing to implicate bone marrow derived GIPR + cells in the control of atherosclerosis or aortic inflammation. CONCLUSIONS: Loss of the Gipr in mice results in increased aortic atherosclerosis and enhanced inflammation in aorta and liver, despite reduced weight gain and preserved glucose homeostasis. These findings extend concepts of GIPR in the suppression of inflammation-related pathophysiology beyond its classical incretin role in the control of metabolism.


Assuntos
Aterosclerose , Pró-Proteína Convertase 9 , Animais , Camundongos , Apolipoproteínas E/genética , Aterosclerose/genética , Glicemia , Peso Corporal , Polipeptídeo Inibidor Gástrico/metabolismo , Incretinas , Inflamação/metabolismo , Receptores Acoplados a Proteínas G , Receptores dos Hormônios Gastrointestinais , RNA Mensageiro
14.
J Educ Health Promot ; 11: 158, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35847150

RESUMO

BACKGROUND: Basic infection control measures are required in India's health-care setting in Neonatal Intensive Care Units (NICUs) to lower the prevalence of hospital-associated infections. The aim of the present study was to assess practices followed by nurses of NICUs for nosocomial infection prevention. MATERIALS AND METHODS: From January to February 2020, a descriptive cross-sectional study was conducted. Participants in the study were chosen by total enumeration sampling technique, i.e., 60 nurses were included in this study who working in tertiary care institutions, India. The study respondents' knowledge and practice for nosocomial infection control strategies were assessed by using a 30-item and 27-item questionnaires, respectively. SPSS (version 23.0) was used to analyze the data collected. RESULTS: Results showed that all nurses (100%) were females, belongs to the age group of 26-35 years (82%), hold professional qualifications (34%) in GNM as well as post basic BSc nursing, married (72%), had 1-5 years of professional experience (66%), and working in the NICUs for 1-3 years (74%). Most of nurses (55%) had never attended any session on nosocomial infection prevention. Nurses of NICUs (70%) had just a moderate degree of understanding on nosocomial infection prevention. Nurses' practice showed good practise (60%) for nosocomial infection prevention in NICUs. CONCLUSIONS: The necessity to adopt health-care policy about nosocomial infections and execution of regular training program to upgrade and refresh nurses' knowledge and practices regarding for nosocomial infection control measures is indicated to fill gap among knowledge and practices concerning nosocomial infection control and prevention.

15.
BJOG ; 129(13): 2176-2183, 2022 12.
Artigo em Inglês | MEDLINE | ID: mdl-35304972

RESUMO

OBJECTIVE: To determine whether screening for gestational diabetes mellitus (GDM) in the third trimester and managing those who are screen positive on a diabetes pathway affects obstetric and neonatal outcomes. DESIGN: Retrospective study of prospectively collected data. SETTING: London Teaching Hospital. POPULATION OR SAMPLE: A total of 14 366 women delivering between 1 January 2018 and 31 December 2020. METHODS: Retrospective chart analysis. MAIN OUTCOME MEASURES: Diagnosis of late-onset GDM, obstetric and neonatal outcomes. RESULTS: Five hundred and thirty-one women were tested by home glucose monitoring for late-onset GDM from 33 weeks of gestation. In all, 244 were diagnosed as having GDM (group 1) and managed accordingly, and 287 (group 2) were returned to normal care. A total of 1415 women had GDM diagnosed by oral glucose tolerance test before 33 weeks of gestation (group 3). Of the women in group 2, 49.5% had a spontaneous onset of labour compared with only 25.8% and 27% in groups 1 and 3. However, women in group 2 were significantly more likely to have a macrosomic baby (≥4000 g, 25.4%) than groups 1 (16.0%) or 3 (7.2%), and their babies were more likely to be admitted to special care (5.2% versus 2% in group 1). Macrosomic babies were associated with significantly higher rates of shoulder dystocia, third- and fourth-degree tears and postpartum haemorrhage. CONCLUSIONS: Apparent late-onset GDM affects a significant proportion of women, and targeted intervention was associated with better obstetric and neonatal outcomes. These results suggest that all pregnancies with risk factors for late-onset GDM might benefit from active GDM management irrespective of specific glucose thresholds. TWEETABLE ABSTRACT: Women with risk factors for GDM in the third trimester, and their babies, would probably benefit from active management of their blood sugars irrespective of threshold values.


Assuntos
Diabetes Mellitus Tipo 2 , Diabetes Gestacional , Gravidez , Recém-Nascido , Feminino , Humanos , Diabetes Gestacional/diagnóstico , Diabetes Gestacional/epidemiologia , Estudos Retrospectivos , Glicemia/metabolismo , Automonitorização da Glicemia , Teste de Tolerância a Glucose , Macrossomia Fetal/diagnóstico , Macrossomia Fetal/epidemiologia , Diabetes Mellitus Tipo 2/epidemiologia
16.
Br Dent J ; 232(5): 311-316, 2022 03.
Artigo em Inglês | MEDLINE | ID: mdl-35277621

RESUMO

Zirconia has increasingly become the ceramic material of choice, satisfying the desired criteria of both optical and physical properties. Zirconia, the ceramic steel, has immense strength and toughness, which is ideal for restorations in posterior regions. Development of the material has improved the optical properties, enabling it to be a potential option for anterior indirect restorations. By exploring the microstructure that influences the material properties, clinicians can confidently select the material most suitable.


Assuntos
Porcelana Dentária , Zircônio , Cerâmica/química , Porcelana Dentária/química
17.
Br Dent J ; 232(3): 147-150, 2022 02.
Artigo em Inglês | MEDLINE | ID: mdl-35149803

RESUMO

Lithium disilicate has become very popular and is very commonly used, especially for highly aesthetic cases. It has also proven to be a very durable material and can be used in a variety of clinical situations. It is important as a clinician, technician or ceramist to be able to confidently use this material by appreciating the detail in its construction. The microstructure has a significant impact on the optical and physical properties of this material. Hence, before the prescription of this type of restoration, it is imperative to be knowledgeable in this aspect. This article explores lithium disilicate as a dental ceramic material in detail.


Assuntos
Porcelana Dentária , Estética Dentária , Cerâmica , Porcelana Dentária/química , Propriedades de Superfície
18.
NPJ Genom Med ; 7(1): 13, 2022 Feb 21.
Artigo em Inglês | MEDLINE | ID: mdl-35190550

RESUMO

Autism spectrum disorder (ASD) is a collection of neurodevelopmental disorders characterized by deficits in social communication and restricted, repetitive patterns of behavior or interests. ASD is highly heritable, but genetically and phenotypically heterogeneous, reducing the power to identify causative genes. We performed whole genome sequencing (WGS) in an ASD cohort of 68 individuals from 22 families enriched for recent shared ancestry. We identified an average of 3.07 million variants per genome, of which an average of 112,512 were rare. We mapped runs of homozygosity (ROHs) in affected individuals and found an average genomic homozygosity of 9.65%, consistent with expectations for multiple generations of consanguineous unions. We identified potentially pathogenic rare exonic or splice site variants in 12 known (including KMT2C, SCN1A, SPTBN1, SYNE1, ZNF292) and 12 candidate (including CHD5, GRB10, PPP1R13B) ASD genes. Furthermore, we annotated noncoding variants in ROHs with brain-specific regulatory elements and identified putative disease-causing variants within brain-specific promoters and enhancers for 5 known ASD and neurodevelopmental disease genes (ACTG1, AUTS2, CTNND2, CNTNAP4, SPTBN4). We also identified copy number variants in two known ASD and neurodevelopmental disease loci in two affected individuals. In total we identified potentially etiological variants in known ASD or neurodevelopmental disease genes for ~61% (14/23) of affected individuals. We combined WGS with homozygosity mapping and regulatory element annotations to identify candidate ASD variants. Our analyses add to the growing number of ASD genes and variants and emphasize the importance of leveraging recent shared ancestry to map disease variants in complex neurodevelopmental disorders.

19.
Br Dent J ; 232(4): 221-223, 2022 02.
Artigo em Inglês | MEDLINE | ID: mdl-35217739

RESUMO

Alumina is a well-known dental ceramic material that has made waves within the dental industry for its good aesthetics and strength when compared to older materials for fixed prostheses, such as crown and bridgework. To be able to confidently use this material, a clinician should understand the physical and optical properties so as to know why and how this material might work in various clinical settings. This part of the ceramic series aims to explore the various alumina-based ceramic systems available on the market and discuss their properties, applications and indications. We also intend to briefly describe the preparation design requirements and cementation protocol for this type of ceramic.


Assuntos
Óxido de Alumínio , Porcelana Dentária , Cerâmica , Estética Dentária , Propriedades de Superfície
20.
J Invasive Cardiol ; 34(3): E164-E170, 2022 03.
Artigo em Inglês | MEDLINE | ID: mdl-35192502

RESUMO

BACKGROUND: The transulnar approach (TUA) has been proposed as a safe alternative to the more established transradial approach (TRA) for cardiac catheterization. However, no study has assessed the anatomy and variability of the ulnar artery using angiography. METHODS: A retrospective analysis of patients who underwent transradial cardiac catheterization during routine clinical care was conducted. Both quantitative and qualitative measurements of artery diameter were collected. RESULTS: Among 700 consecutive patients, mean distal ulnar artery diameter (UAD) was larger in men (3.2 ± 0.9 mm) compared with women (2.7 ± 0.7 mm; P<.001). UAD was larger than radial artery diameter (RAD) at all measured sites (distal ulnar, 3.0 ± 0.8 mm; distal radial, 2.9 ± 0.7 mm; P=.046). Compared with the radial artery, the ulnar artery had more atresia (4.3% ulnar vs 0% radial; P<.001), fewer loops (0.6% ulnar vs 2.4% radial; P<.01), and less spasm (2.7% ulnar vs 23.4% radial; P<.001). UAD had more variability (distal variance, 0.68) as compared with the RAD (distal variance, 0.53; P<.001). CONCLUSION: We found that the ulnar artery has a larger diameter, fewer loops, and less spasm, but more variance than the radial artery. Additionally, males have larger ulnar arteries than women. These findings have implications on the application of TUA either as an alternative to TRA or as the primary point of access.


Assuntos
Artéria Radial , Artéria Ulnar , Angiografia Coronária , Feminino , Humanos , Masculino , Estudos Retrospectivos , Espasmo , Resultado do Tratamento
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