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1.
Pediatr Surg Int ; 40(1): 71, 2024 Mar 06.
Artigo em Inglês | MEDLINE | ID: mdl-38446238

RESUMO

Surgically treated necrotising enterocolitis (sNEC) is associated with significantly worse neurodevelopmental outcomes than that seen in premature infants without NEC. We aim to review the association between factors involved in the surgical treatment of NEC and subsequent neurodevelopmental outcomes to identify potential areas for improvement. The PubMed and Embase databases were interrogated for articles reporting neurodevelopmental outcomes in babies treated surgically for NEC using key terms including: "Infant", "Necrotising enterocolitis", "Surgical", "Neurodevelopmental" and "Outcomes". The search strategy yielded 1170 articles and after applying inclusion and exclusion criteria 22 studies remained and formed the review. A diverse range of neurodevelopmental outcomes were reported. Extreme prematurity and lower birth weight were associated with worse neurodevelopmental outcomes. The use of peritoneal drains and enterostomies were associated with worse outcomes. Modifications to surgical strategies in NEC may improve neurodevelopmental outcomes but the effect of confounding factors remains unclear. Further large scale studies are required to define the optimum strategies for treating NEC surgically and to develop a core outcome set for research into NEC.


Assuntos
Enterocolite Necrosante , Enterostomia , Doenças do Recém-Nascido , Humanos , Lactente , Recém-Nascido , Peso ao Nascer , Bases de Dados Factuais , Enterocolite Necrosante/cirurgia , Recém-Nascido Prematuro
2.
J Nurs Adm ; 53(10): 520-525, 2023 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-37747175

RESUMO

OBJECTIVE: To explore the impact of COVID-19 on care processes and ambulation outcomes. BACKGROUND: COVID-19 forced hospital leaders to make systems-level changes that disrupted patient ambulation. The impact of these changes on the ambulation of hospitalized patients was unknown. The Systems Engineering Initiative for Patient Safety model was used to explore ambulation from a systems perspective. METHODS: A single-case study research design was used to investigate patient ambulation in a major medical center. Data from 12 interviews with interdisciplinary leaders were analyzed. RESULTS: Staff shortages and visitor restrictions were identified as the main work system barriers to ambulation. These barriers disrupted usual ambulation processes and supported the value of visitor assistance with ambulation. CONCLUSIONS: This study provides a systems-level perspective of missed ambulation during COVID-19, which revealed the value of ambulation assistance provided by visitors. Findings may be used to support the continued and increased involvement of family members and visitors in the process of ambulation.


Assuntos
COVID-19 , Humanos , Assistência ao Paciente , Hospitais , Caminhada , Família
3.
J Nurs Manag ; 30(6): 2039-2045, 2022 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-35506538

RESUMO

AIM: The aim of this study was to understand how new graduate nurses experience communication with physicians. BACKGROUND: Communication is necessary for high-quality health care delivery. With poor patient outcomes as a driving force, knowledge of the dialogue that occurs between new graduate nurses and physicians has been rarely explored. METHODS: This qualitative descriptive study involved 13 new graduate nurses from an academic teaching hospital in the south-eastern United States. Data for this study were collected using face-to-face and virtual interviews with a focus on having nurses describe their experience communication with physicians in their current practice. RESULTS: Analysis led to four themes that describe new graduate nurses experience communicating with physicians. Those themes were gaps in preparation, developing confidence, learning to communicate, and interprofessional care. CONCLUSIONS: Effective communication with physicians is a stressor for new graduate nurses as they transition to practice. For these nurses, negative emotions in their anticipation of communicating with physicians were developed during their educational experience. IMPLICATIONS FOR NURSING MANAGEMENT: The findings of this study emphasize the importance of enhanced interprofessional training in education and practice that facilitate effective communication between the two professions in the practice environment.


Assuntos
Educação de Pós-Graduação em Enfermagem , Enfermeiras e Enfermeiros , Médicos , Comunicação , Atenção à Saúde , Humanos , Pesquisa Qualitativa
4.
J Interprof Care ; 34(2): 225-232, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-31381472

RESUMO

Poor communication between nurses and physicians results in patient injury and increased healthcare costs. While multiple attempts have been made to improve communication between the two professions, evidence confirms little progress has been made. Previous research focused on standardizing communication processes and protocols between nurses and physicians rather than examining the relational component of these human interactions. The purpose of this study was to explore physician valuing of nursing communication in the context of patient care. Interviews were conducted with 15 internal medicine resident physicians. A constructivist grounded theory approach was used to develop the substantive theory of Getting Work Done. Getting Work Done incorporated three major categories: discerning the team, shifting communication, and accessing nurse knowledge and abilities. Hierarchical behaviors and language, and nurse collusion in both, characterized nurse-physician communication and situated the nurse outside the decision-making team. Complex work environments further devalued nurse-physician communication. Interprofessional education and practice must advance the unique and essential role of all health care professionals such that mutual valuing replaces hierarchical actions with collaborative systems for determining the most effective approaches to patient care.


Assuntos
Comunicação , Relações Interprofissionais , Corpo Clínico Hospitalar/psicologia , Recursos Humanos de Enfermagem Hospitalar/psicologia , Equipe de Assistência ao Paciente/organização & administração , Adulto , Atitude do Pessoal de Saúde , Feminino , Teoria Fundamentada , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Medicina Interna/educação , Internato e Residência , Entrevistas como Assunto , Masculino , Pessoa de Meia-Idade , Equipe de Assistência ao Paciente/normas , Relações Médico-Enfermeiro , Pesquisa Qualitativa
5.
Plant Foods Hum Nutr ; 75(2): 236-242, 2020 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-32144644

RESUMO

As diets change in response to ethical, environmental, and health concerns surrounding meat consumption, fermentation has potential to improve the taste and nutritional qualities of plant-based foods. In this study, cauliflower, white beans, and a 50:50 cauliflower-white bean mixture were fermented using different strains of Lactobacillus plantarum. In all treatments containing cauliflower, the pH was reduced to <4 after 18 h, while treatments containing only white beans had an average pH of 4.8 after 18 h. Following fermentation, the riboflavin, folate, and vitamin B12 content of the cauliflower-white bean mixture was measured, and compared against that of an unfermented control. The riboflavin and folate content of the mixture increased significantly after fermentation. Relative to control samples, riboflavin increased by 76-113%, to 91.6 ± 0.6 µg/100 g fresh weight, and folate increased by 32-60%, to 58.8 ± 2.0 µg/100 g fresh weight. For one bacterial strain, L. plantarum 299, a significant 66% increase in vitamin B12 was observed, although the final amount (0.048 ± 0.013 µg/100 g fresh weight) was only a small fraction of recommended daily intake. Measurements of amino acid composition in the mixture revealed small increases in alanine, glycine, histidine, isoleucine, leucine, and valine in the fermented sample compared to the unfermented control.


Assuntos
Brassica , Lactobacillus plantarum , Aminoácidos , Fermentação , Ácido Fólico , Riboflavina , Vitamina B 12 , Vitaminas
7.
Reprod Domest Anim ; 50(4): 637-42, 2015 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-25990918

RESUMO

Greater depths of muscle are associated with better reproductive performance in ewe lambs, but, in adult ewes, reproductive performance also seems to vary with liveweight gain during the mating period. Therefore, in a large field study with Merino ewe lambs, we tested whether the relationships among eye muscle depth (EMD), fat depth (FAT) and reproductive performance depend on liveweight gain during the mating period. We selected lambs with a wide range in phenotypic values for depths of eye muscle (EMD) and fat (FAT) and assigned them to dietary treatments designed to achieve low (LOW, n = 244) or high (HIGH, n = 237) rates of liveweight gain during a 28-day mating period. The LOW treatment maintained live weight, whereas the HIGH treatment gained 179 ± 3.8 g/day (p < 0.001). From those ewe lambs that attained puberty, first oestrus was detected at live weight 37.8 ± 0.2 kg and age 232 days. The proportion of ewes that attained puberty increased with EMD (p < 0.01). Ewes from the HIGH treatment were more fertile (pregnant ewes per 100 ewes exposed to rams) and had a higher reproductive rate (foetuses in utero per 100 ewes exposed to rams; p < 0.001) than those from the LOW treatment. Fertility and reproductive rate were positively correlated with weight gain during mating as well as live weight at the start of mating, FAT and EMD (p < 0.05 to <0.001). We conclude that faster growth, due to either extra nutrition during mating or higher phenotypic potential for fat and muscle, will increase reproductive performance in ewe lambs mated at 8 months of age.


Assuntos
Tecido Adiposo/anatomia & histologia , Cruzamento , Músculos/anatomia & histologia , Maturidade Sexual/fisiologia , Ovinos/fisiologia , Aumento de Peso/fisiologia , Animais , Austrália , Peso Corporal , Dieta/veterinária , Estro/fisiologia , Feminino , Fertilidade/fisiologia , Masculino , Fenótipo , Gravidez , Reprodução/fisiologia
8.
J Fish Biol ; 86(2): 558-574, 2015 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-25643838

RESUMO

Round goby Neogobius melanostomus were examined from the Bass Islands area in the western basin of Lake Erie, U.S.A., to determine age and growth correlations. A total of 188 specimens were collected and examined during summer 2011 with 90 aged using scale analysis. Fish were grouped by sex, depth of habitat and habitat type (anthropogenically modified shallows, natural shallows and open lake deep water). Fish ranged from 17 to 117 mm total length (LT ) and 0+ to 3+ years. Males dominated the population (1·94:1) and backcalculated age showed that both sexes grew exponentially, with male growth rate increasing faster than female. Males were significantly larger than females in LT and mass (both P < 0·001). The relative mass index (Wr ) was low for the sampled population (mean ± s.d. = 32·00 ± 26·87 g), implying that the health of the Bass Island area population is very poor when compared with the species throughout its range. This could be due to a lack of food resources related to population size or that the fish is not optimally utilizing the available food resources. In contradiction to these findings, regression slope coefficient (b), calculated using Fulton's condition factor (K) (mean ± s.d. =1·50 ± 0·20), was very low for each habitat, implying a healthy population throughout. This seemingly opposite effect may be due to more individuals per unit area in shallow waters, which would cause increased competition for resources. Poor condition may indicate that the Lake Erie population has reached saturation or may reflect indirect fitness costs associated with increasing anoxic or hypoxic hypolimnion conditions.

9.
J Interprof Care ; 29(4): 377-9, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-25291261

RESUMO

A survey of the constituents of a complementary and alternative medicine (CAM) institution was conducted to identify perceptions of interprofessional education (IPE) and practice (IPP). A 22 question survey was developed and administered to: chiropractic students, acupuncture and oriental medicine students, faculty and alumni of both professions, staff and administrators. The majority of the 321 respondents demonstrated positive perceptions of IPE and IPP, however many reported a lack of understanding of the distinct roles of select healthcare professions. The study also suggested that the campus community is not homogenous in its understanding of CAM or allopathic professions, or is it homogenous in its understanding of IPE and IPP. While the overall positive attitudes toward IPE and IPP imply a willingness to improve collaboration between these groups, the lack of understanding of profession-specific roles must be addressed to support effective implementation of IPE.


Assuntos
Atitude do Pessoal de Saúde , Terapias Complementares/educação , Pessoal de Saúde/educação , Relações Interprofissionais , Percepção , Comportamento Cooperativo , Currículo , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Papel Profissional
11.
Clin Cancer Res ; 30(8): 1595-1606, 2024 Apr 15.
Artigo em Inglês | MEDLINE | ID: mdl-38593226

RESUMO

PURPOSE: CD137 is a T- and NK-cell costimulatory receptor involved in consolidating immunologic responses. The potent CD137 agonist urelumab has shown clinical promise as a cancer immunotherapeutic but development has been hampered by on-target off-tumor toxicities. A CD137 agonist targeted to the prostate-specific membrane antigen (PSMA), frequently and highly expressed on castration-resistant metastatic prostate cancer (mCRPC) tumor cells, could bring effective immunotherapy to this immunologically challenging to address disease. EXPERIMENTAL DESIGN: We designed and manufactured CB307, a novel half-life extended bispecific costimulatory Humabody VH therapeutic to elicit CD137 agonism exclusively in a PSMA-high tumor microenvironment (TME). The functional activity of CB307 was assessed in cell-based assays and in syngeneic mouse antitumor pharmacology studies. Nonclinical toxicology and toxicokinetic properties of CB307 were assessed in a good laboratory practice (GLP) compliant study in cynomolgus macaques. RESULTS: CB307 provides effective CD137 agonism in a PSMA-dependent manner, with antitumor activity both in vitro and in vivo, and additional activity when combined with checkpoint inhibitors. A validated novel PSMA/CD137 IHC assay demonstrated a higher prevalence of CD137-positive cells in the PSMA-expressing human mCRPC TME with respect to primary lesions. CB307 did not show substantial toxicity in nonhuman primates and exhibited a plasma half-life supporting weekly clinical administration. CONCLUSIONS: CB307 is a first-in-class immunotherapeutic that triggers potent PSMA-dependent T-cell activation, thereby alleviating toxicologic concerns against unrestricted CD137 agonism.


Assuntos
Neoplasias de Próstata Resistentes à Castração , Masculino , Humanos , Camundongos , Animais , Neoplasias de Próstata Resistentes à Castração/tratamento farmacológico , Neoplasias de Próstata Resistentes à Castração/patologia , Imunoterapia/métodos , Microambiente Tumoral
12.
IEEE Trans Nucl Sci ; 60(3)2013 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-24273335

RESUMO

This study evaluated the image quality metrics of small animal PET scanners based upon measured single detector module positioning performance. A semi-analytical approach was developed to study PET scanner performance in the scenario of multiple realizations. Positron range blurring, scanner system response function (SRF) and statistical noise were included in the modeling procedure. The scanner sensitivity map was included in the system matrix during maximum likelihood expectation maximization (MLEM) reconstruction. Several image quality metrics were evaluated for octagonal ring PET scanners consisting of continuous miniature crystal element (cMiCE) detector modules with varying designs. These designs included 8 mm and 15 mm thick crystal detectors using conventional readout with the photosensors on the exit surface of the crystal and a 15 mm thick crystal detector using our proposed sensor-on-the-entrance (SES) design. For the conventional readout design, the results showed that there was a tradeoff between bias and variance with crystal thickness. The 15 mm crystal detector had better detection task performance, while quantitation task performance was degraded. On the other hand, our SES detector had similar detection efficiency as the conventional design using a 15 mm thick crystal and had similar intrinsic spatial resolution as the conventional design using an 8 mm thick crystal. The end result was that by using the SES design, one could improve scanner quantitation task performance without sacrificing detection task performance.

13.
J Am Coll Health ; 71(2): 403-410, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-33760721

RESUMO

Background: Pouring rights contracts are agreements in which beverage companies pay universities for exclusive marketing and rights to sell sugar-sweetened beverages (SSB) in campus. This study explored university stakeholder's awareness and opinions of university pouring rights contracts. Methods: Nine hundred fifteen university stakeholders self-reported their awareness and support of pouring rights contracts along with several possible determinants of support (age, gender, nutrition education, beliefs about SSBs, beverage intake). Results: About 64.2% of participants reported no awareness of pouring rights contracts whereas only 38% reported agreeing with university pouring rights contracts. Males, undergraduate students, and those who felt individuals are responsible for their SSB consumption were more likely to support pouring rights contracts. Conclusions: University stakeholders were largely unaware of and unsupportive of pouring rights contracts. Universities are encouraged to consider the health impacts and opinions of university stakeholders when deciding whether to enter into pouring rights contracts.


Assuntos
Bebidas Adoçadas com Açúcar , Masculino , Humanos , Universidades , Estudantes , Bebidas
14.
Appl Clin Inform ; 14(3): 585-593, 2023 05.
Artigo em Inglês | MEDLINE | ID: mdl-37150179

RESUMO

OBJECTIVES: The goal of this work was to provide a review of the implementation of data science-driven applications focused on structural or outcome-related nurse-sensitive indicators in the literature in 2021. By conducting this review, we aim to inform readers of trends in the nursing indicators being addressed, the patient populations and settings of focus, and lessons and challenges identified during the implementation of these tools. METHODS: We conducted a rigorous descriptive review of the literature to identify relevant research published in 2021. We extracted data on model development, implementation-related strategies and measures, lessons learned, and challenges and stakeholder involvement. We also assessed whether reports of data science application implementations currently follow the guidelines of the Developmental and Exploratory Clinical Investigations of DEcision support systems driven by AI (DECIDE-AI) framework. RESULTS: Of 4,943 articles found in PubMed (NLM) and CINAHL (EBSCOhost), 11 were included in the final review and data extraction. Systems leveraging data science were developed for adult patient populations and were primarily deployed in hospital settings. The clinical domains targeted included mortality/deterioration, utilization/resource allocation, and hospital-acquired infections/COVID-19. The composition of development teams and types of stakeholders involved varied. Research teams more frequently reported on implementation methods than implementation results. Most studies provided lessons learned that could help inform future implementations of data science systems in health care. CONCLUSION: In 2021, very few studies report on the implementation of data science-driven applications focused on structural- or outcome-related nurse-sensitive indicators. This gap in the sharing of implementation strategies needs to be addressed in order for these systems to be successfully adopted in health care settings.


Assuntos
COVID-19 , Ciência de Dados , Adulto , Humanos , COVID-19/epidemiologia , Atenção à Saúde
15.
Clin Toxicol (Phila) ; 60(8): 979-984, 2022 08.
Artigo em Inglês | MEDLINE | ID: mdl-35546568

RESUMO

BACKGROUND: Toronto's Drug Checking Service (DCS) provides people who use drugs with information on the chemical composition of their substances and conducts real-time monitoring of the unregulated drug supply. Presented are first known data of three newly detected synthetic cannabinoids (SCs) in Toronto, Ontario. METHODS: The present data are from samples analyzed between April and November 2020. Samples were collected at partnering harm reduction agencies in Toronto and analyzed using gas or liquid chromatography-mass spectrometry. An intake survey queried about the sample characteristics on submission, including expected drug(s). RESULTS: Samples were analyzed between 1 April and 20 November 2020 (N = 19), which marks the period immediately following imposed COVID-19 border and movement restrictions in Canada. The newly detected, unexpected SCs were ACHMINACA (n = 15), AB-FUBINACA (n = 3), and 4-fluoro-MDMB-BUTINACA (n = 1). Fentanyl was expected in 74% (n = 14). Most SCs were detected in samples containing fentanyl or related analogues (n = 18; 95%), or benzodiazepine-related drugs (i.e., etizolam and flualprazolam) (n = 15; 79%). CONCLUSIONS: This information can inform overdose prevention efforts and drug market monitoring of SCs in Toronto and regions served by the same drug trafficking routes. The detection of SCs during a period marked by COVID-19-related restrictions can contribute to efforts to identify global drug market trends during this time.


Assuntos
COVID-19 , Canabinoides , Overdose de Drogas , Drogas Ilícitas , Benzodiazepinas , COVID-19/epidemiologia , Canabinoides/química , Overdose de Drogas/prevenção & controle , Fentanila , Humanos , Drogas Ilícitas/análise , Ontário/epidemiologia
16.
J Nurses Prof Dev ; 38(3): 145-150, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-34238843

RESUMO

This cross-sectional quantitative study explored career adaptability and career intentions in newly licensed nurses working in acute care hospitals throughout North Carolina. Data were analyzed from 277 registered nurses completing an online study instrument. Findings demonstrate a relationship between levels of career adaptability and career intentions, offering career adaptability as a new measurement to explore newly licensed nurses' desire to pursue career and educational change and expand transition programs to include developing career trajectories within organizations.


Assuntos
Educação de Pós-Graduação em Enfermagem , Humanos , Estudos Transversais , North Carolina
17.
Contemp Fam Ther ; 44(1): 67-87, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-34803217

RESUMO

Cognitive impairment (e.g. dementia) presents challenges for individuals, their families, and healthcare professionals alike. The primary care setting presents a unique opportunity to care for older adults living with cognitive impairment, who present with complex care needs that may benefit from a family-centered approach. This indepth systematic review was completed to address three aims: (a) identify the ways in which families of older-adult patients with cognitive impairment are engaged in primary care settings, (b) examine the outcomes of family engagement practices, and (c) organize and discuss the findings using CJ Peek's Three World View. Researchers searched PubMed, Embase, and PsycINFO databases through July 2019. The results included 22 articles out of 6743 identified in the initial search. Researchers provided a description of the emerging themes for each of the three aims. It revealed that family-centered care and family engagement yields promising results including improved health outcomes, quality care, patient experience, and caregiver satisfaction. Furthermore, it promotes and advances the core values of medical family therapy: agency and communion. This review also exposed the inconsistent application of family-centered practices and the need for improved interprofessional education of primary care providers to prepare multidisciplinary teams to deliver family-centered care. Utilizing the vision of Patient- and Family-Centered Care and the lens of the Three World View, this systematic review provides Medical Family Therapists, healthcare administrators, policy makers, educators, and clinicians with information related to family engagement and how it can be implemented and enhanced in the care of patients with cognitive impairment.

18.
Neuropharmacology ; 211: 109048, 2022 06 15.
Artigo em Inglês | MEDLINE | ID: mdl-35364101

RESUMO

After experiencing a traumatic event people often turn to alcohol to cope with symptoms. In those with post-traumatic stress disorder (PTSD) and a co-occurring alcohol use disorder (AUD), PTSD symptoms can worsen, suggesting that alcohol changes how traumatic memory is expressed. The objective of this series of experiments is to identify how alcohol drinking (EtOH), following cued fear conditioning and extinction, impacts fear expression in mice. Molecular (activity-regulated cytoskeleton-associated protein, Arc/arg3.1) and structural (dendrite and spine morphometry) markers of neuronal plasticity were measured following remote extinction retrieval. Mouse age (adolescent and adult) and sex were included as interacting variables in a full factorial design. Females drank more EtOH than males and adolescents drank more EtOH than adults. Adolescent females escalated EtOH intake across drinking days. Adolescent drinkers exhibited more conditioned freezing during extinction retrieval, an effect that persisted for at least 20 days. Heightened cued freezing in the adolescent group was associated with greater Arc/arg3.1 expression in layer (L) 2/3 prelimbic (PL) cortex, greater spine density, and reduced basal dendrite complexity. In adults, drinking was associated with reduced L2/3 infralimbic (IL) Arc expression but no behavioral differences. Few sex interactions were uncovered throughout. Overall, these data identify prolonged age-related differences in alcohol-induced fear extinction impairment and medial prefrontal cortex neuroadaptations.


Assuntos
Medo , Transtornos de Estresse Pós-Traumáticos , Adolescente , Animais , Etanol/metabolismo , Etanol/farmacologia , Extinção Psicológica , Medo/fisiologia , Feminino , Humanos , Masculino , Camundongos , Córtex Pré-Frontal , Transtornos de Estresse Pós-Traumáticos/metabolismo
19.
Dev Biol ; 347(1): 40-52, 2010 Nov 01.
Artigo em Inglês | MEDLINE | ID: mdl-20707994

RESUMO

The majority of vertebrate species have a layer of hyaline cartilage within the fibrous sclera giving an extra degree of support to the eyeball. In chicks, this is seen as a cuplike structure throughout the scleral layer. However, the mechanisms that control the development of scleral cartilage are largely unknown. Here we have studied the phases of scleral cartilage development and characterised expression profiles of genes activated during the cartilage differentiation programme. CART1 and SOX9, the earliest markers of pre-committed cartilage, are expressed in the mesenchyme surrounding the optic cup. Later AGGRECAN, a matrix protein expressed during chondrocyte differentiation, is also expressed. The expression of these genes is lost following early removal of the optic cup, suggesting a role for this tissue in inducing scleral cartilage. By grafting young retinal pigment epithelium (RPE) and retina into cranial mesenchyme in vivo, it was found that RPE alone has the ability to induce cartilage formation. There are some exceptions within the vertebrates where scleral cartilage is not present; one such example is the placental mammals. However, we found that the cartilage differentiation pathway is initiated in mice as seen by the expression of Cart1 and Sox9, but expression of the later cartilage marker Aggrecan is weak. Furthermore, cartilage forms in mouse peri-ocular mesenchyme micromass culture. This suggests that the process halts in vivo before full differentiation into cartilage, but that murine scleral mesenchyme has retained the potential to make cartilage in vitro. RA, Wnts and Bmps have been linked to the cartilage development process and are expressed within the developing RPE. We find that RA may have a role in early scleral cartilage development but is not likely to be the main factor involved. These data reveal the course of scleral cartilage formation and highlight the key role that the optic cup plays in this process. The driving element within the optic cup is almost certainly the retinal pigmented epithelium.


Assuntos
Cartilagem/embriologia , Epitélio Pigmentado da Retina/metabolismo , Esclera/embriologia , Animais , Biomarcadores/metabolismo , Cartilagem/citologia , Cartilagem/metabolismo , Sistema Nervoso Central/embriologia , Galinhas , Enucleação Ocular , Mesoderma/embriologia , Camundongos , Crista Neural/citologia , Crista Neural/metabolismo , Esclera/citologia , Esclera/metabolismo , Transdução de Sinais
20.
Optom Vis Sci ; 88(1): E8-15, 2011 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-21131878

RESUMO

Perimetry and visual field testing have been used as clinical ophthalmic diagnostic tools for many years, and this manuscript will provide a brief historical overview of these procedures and the individuals who developed them. Today, we have many different forms of perimetry that are designed to evaluate different locations within the visual pathways and various mechanisms and subsets of mechanisms within the visual system. However, the most widely used method of performing perimetry and visual field testing has not substantially changed for more than 150 years, consisting of detecting a small target superimposed on a uniform background at different locations within the field of view. Although the basic test procedure has remained similar throughout the ages, there have been many advances in test administration, standardization, statistical evaluation, clinical analysis, interpretation, and prediction of outcome based on visual field findings.


Assuntos
Testes Visuais/história , Testes de Campo Visual/história , Campos Visuais , Automação , História do Século XVII , História do Século XIX , História do Século XX , História Antiga , Humanos , Testes Visuais/instrumentação , Testes Visuais/métodos , Testes de Campo Visual/instrumentação , Testes de Campo Visual/métodos , Testes de Campo Visual/tendências
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