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2.
Cureus ; 15(12): e50906, 2023 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-38249253

RESUMEN

Fournier's gangrene is a rare form of infectious fasciitis in the genital region. It is a rapidly progressing, life-threatening infection that requires immediate diagnosis and treatment. Common risk factors for Fournier's gangrene include diabetes mellitus, obesity, trauma, alcoholism, and cigarette smoking. The infection is more commonly seen in men than women, but we present here a case of Fournier's gangrene in a 74-year-old woman. The incident started as a small lump in the genital region from a fall and progressed into a severe case of necrotizing fasciitis. Emergent surgical debridement and antibiotics were required, as mortality depends greatly on prompt management.

3.
Br Dent J ; 2022 Sep 22.
Artículo en Inglés | MEDLINE | ID: mdl-36138097

RESUMEN

Introduction Research has established varying levels of efficacy of oral health education (OHE) efforts. However, little is known regarding how outcomes impact dental professionals and their OHE practice. This study explores dental professionals' reactions to varying OHE outcomes and their motivations to persist with their efforts.Methods Qualitative, semi-structured interviews were conducted with dental team members working in mainly NHS general dental practices in South Wales, UK. Interviews were conducted face-to-face pre-COVID-19 and then by telephone, transcribed and analysed thematically.Results In total, 30 interviews were conducted (17 dentists, 6 dental therapists and 7 dental nurses). Pleasure was gained from improved patient oral health. Responses to non-adherence included disappointment, frustration and acceptance. Acceptance centred around a shared responsibility for oral care between clinician and patient and reassurance that they had 'done their job'. The unpredictability of patient adherence aided OHE motivation; efforts might eventually inspire patient action or might align with patient readiness to change.Conclusions This study reveals how OHE outcomes impact on dental professionals' perceptions of their role and personal motivations for continued educational efforts with patients. Greater emphasis on both preventative dentistry and self-care, coupled with understanding of the complex factors influencing oral health behaviour, would aid motivation for OHE.

4.
Community Dent Oral Epidemiol ; 50(5): 350-359, 2022 10.
Artículo en Inglés | MEDLINE | ID: mdl-34519366

RESUMEN

OBJECTIVES: Most common diseases of the mouth are preventable through behavioural changes, oral hygiene routines and regular professional care. Research suggests dental professionals may prioritize clinical experience, personal values and preferences over evidence when delivering such interventions. Research also suggests variable rates of patient behaviour change following oral health education (OHE) interactions. This review explores the literature to answer the question: what factors influence the provision and reception of OHE messages and the wider OHE process? METHODS: A structured search of literature was carried out with databases covering a range of academic disciplines (healthcare sciences, social sciences, education). Key words/terms were searched to elicit papers published since 1998. Citation mining (relevant citations within papers) and citation tracking (papers citing relevant papers) were also used. Recurring themes within the papers were identified and coded using NVivo12 and presented in a conceptual model. RESULTS: The studies analysed tended to employ small-scale surveys, larger-scale surveys (some with low response rates), or interview studies of varying sizes. There was also a limited number of review papers. However, several key messages were identified regarding dental professionals' and patients' views on OHE and the factors that influence its provision. Factors that were identified related to the wider social and policy context (macro), community-level factors (meso), the individual practitioner and patient (micro), factors that influenced the nature of OHE interaction and any resulting behaviour change, and how the outcomes of the process influence future OHE interactions for both parties. CONCLUSIONS: The literature highlighted how factors influence the OHE process before, during and after the educational interaction. The resultant conceptual model acknowledges the influence of wider 'upstream' factors alongside interpersonal and individual influences which should be taken into consideration when developing OHE interventions.


Asunto(s)
Educación en Salud Dental , Higiene Bucal , Atención a la Salud , Humanos , Encuestas y Cuestionarios
5.
J Health Econ Outcomes Res ; 8(2): 1-5, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34250178

RESUMEN

Background: Bundled payments are services rendered at pre-determined costs with the goal of providing high value care. Our institution's Episodes of Care team partnered with its tertiary care obesity center to design a novel medical weight management bundle for employers that would collectively deliver high value obesity services. Objective: As a first step, we sought to evaluate short-term medical weight loss outcomes over 6 months at the obesity center. Methods: We retrospectively analyzed weight loss outcomes on 157 patients with commercial insurance coverage over a period of 6 months. Results: Patients ranged in age from 18-72 years, and 77.7% were female. Patients ranged in weight from 160-443 pounds, with a mean body mass index (BMI) of 42.7 kg/m2 (Class 3a severe obesity; BMI range 28.4-74.5). The prevalence of any obesity-related medical condition was 54.1%; at least a quarter of the patients had either prediabetes or Type 2 diabetes mellitus, approximately a third had hypertension, and over 8% had hyperlipidemia. Mean weight loss from the initial program start date was 6.28% (+/-0.48% standard error of mean [SEM]; 95% confidence interval [CI] 5.34-7.23%). Completers (defined as having at least 6 visits with a medical provider) achieved a higher percentage of weight loss (7.06%) from the initial program start compared to non-completers (4.68%; at least 4-5 visits with a medical provider; P<0.0158). Approximately 50% of patients were able to achieve >7% weight loss, with over 55% of patients achieving at least 3% weight loss or higher irrespective of BMI classification. Conclusions: Specialized medical weight intervention is effective in treating high-risk obesity with complications. This has implications for enhanced long-term cost savings related to employer coverage of such programs for their employees with obesity.

6.
ChemMedChem ; 16(8): 1308-1315, 2021 04 20.
Artículo en Inglés | MEDLINE | ID: mdl-33320428

RESUMEN

A second-generation enantiospecific synthesis of spiroleucettadine is described. The original reported antibacterial activity was not observed when the experiment was repeated on the synthetic samples; however, significant anti-proliferative activity was uncovered for both enantiomers of spiroleucettadine. Comparison of the optical rotational data and ORD-CD spectra of both enantiomers and the reported spectrum from the natural source have not provided a definitive answer regarding the absolute stereochemistry of naturally occurring spiroleucettadine. Efforts then focussed on alteration at the C-4 and C-5 positions of the slightly more active (-)-spiroleucettadine. Ten analogues were synthesised, with three analogues found to possess similar anti-proliferative profiles to spiroleucettadine against the H522 lung cancer cell line.


Asunto(s)
Antineoplásicos/farmacología , Imidazoles/farmacología , Compuestos de Espiro/farmacología , Antineoplásicos/síntesis química , Línea Celular Tumoral , Humanos , Imidazoles/síntesis química , Compuestos de Espiro/síntesis química , Estereoisomerismo
7.
Br Dent J ; 228(6): 459-463, 2020 03.
Artículo en Inglés | MEDLINE | ID: mdl-32221450

RESUMEN

Introduction Studies across the health service reveal benefits of teamwork and barriers to its optimal use. Drawing upon the established Maturity Matrix Dentistry method, the Skills Optimisation Self-Evaluation Toolkit (SOSET) was developed to enable the whole dental team to critically review how they address skill-mix in delivery of patient-centred oral healthcare in their practice. This paper outlines the development of the SOSET and explores its usefulness to general dental practice teams.Methods Research literature and interview data from general dental practice teams were coded for high-level factors (positive and negative) influencing teamwork. We used this coding to identify skill-mix domains, and within each, define criteria. The SOSET process was refined following consultations with dental professionals and piloting.Results Eighty-four papers were coded and 38 dental team members were interviewed across six sites. The SOSET matrix was developed containing nine domains reflecting the use of skill-mix, each containing six development-level criteria. The domains addressed factors such as team beliefs on skill-mix and knowledge of team members' scope of practice, patient demand, the business case, staffing and training, and the practice premises. The process was piloted in 11 practices across South Wales, and feedback was received from 92 staff members. Results showed that the SOSET process was straightforward, that the whole team could contribute to discussion and that it would be used to improve practice. Following piloting, four domains were merged into two new domains, and the number of criteria within all domains was reduced and the wording simplified (seven domains, with four criteria each).Conclusion We used a systematic and rigorous process to develop the SOSET to support dental teams to progress their teamwork practices. Its usefulness was demonstrated in the pilot. The SOSET is now being offered to general dental practices across Wales.


Asunto(s)
Autoevaluación Diagnóstica , Odontología General , Humanos , Grupo de Atención al Paciente , Recursos Humanos
8.
Eur J Dent Educ ; 24(3): 390-397, 2020 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-32056338

RESUMEN

INTRODUCTION: Health professionals worldwide are required to maintain their knowledge and skills through continuing education. However, there is limited evidence that the accumulation of hours of educational activity enhances practice. The aim of this study was to review evidence of the impact of continuing professional development (CPD), best educational practice and new models of CPD requirements. METHODS: We conducted a rapid evidence synthesis, reviewing literature and websites on continuing education for healthcare and non-healthcare professionals. RESULTS: We extracted data from 184 publications. Evidence of changed practice and improved patient care is uncommon in studies of CPD. What evidence there is suggests that activities are more likely to have impact if a combination of methods is used and if they are aligned with learning needs. Impact is also affected by the learner and their work environment. In terms of CPD requirements, we identified three models: input-based; outcomes-based and mixed models. We found a clear shift from quantitative, time-serving, input-models to outcomes-focused models which emphasise the identification of learning needs, selection of educational activity relevant to practice and reflection on practice improvement. Across a range of professions, recently updated CPD regulations no longer require registrants to accumulate CPD hours/points/credits. CONCLUSION: Outcomes-based models support registrants' engagement in relevant, meaningful CPD which holds greater potential to positively impact on practice and strengthen patient safety. In funding this study, the UK General Dental Council exemplifies its commitment to reviewing its CPD requirments.


Asunto(s)
Educación Continua , Educación en Odontología , Personal de Salud , Humanos , Aprendizaje , Seguridad del Paciente
9.
Eur J Dent Educ ; 24(1): 109-120, 2020 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-31618492

RESUMEN

INTRODUCTION: In the United Kingdom, policy and guidance changes regarding the role of dental therapists (DTs) were implemented in recent years with a view to changing dental care to a more preventive-focussed, teamwork approach. However, success in the adoption of this model of working has been varied. AIMS: Adopting a realist approach, our aim was, to examine the use of DTs in general dental practices in Wales, exploring what works, why, how and in what circumstances. MATERIALS AND METHODS: The research comprised two stages. (a) A structured literature search, dual-coding papers for high-level factors describing the conditions or context(s) under which the mechanisms operated to produce outcomes. From this, we derived theories about how skill-mix operates in the general dental service. (b) Six case studies of general dental practices (three with a dental therapist/three without a dental therapist) employing a range of skill-mix models incorporating semi-structured interviews with all team members. We used the case studies/interviews to explore and refine the theories derived from the literature. RESULTS: Eighty-four papers were coded. From this coding, we identified seven theories which reflected factors influencing general dental practices within three broad contexts: the dental practice as a business, as a healthcare provider and as a workplace. We tested these theories in interviews with 38 dental team members across the six care studies. As a result, we amended five of the theories. CONCLUSION: Our analysis provides theory about outcomes that DTs may facilitate and the mechanisms that may assist the work of DTs within different contexts of general dental practice.


Asunto(s)
Atención Odontológica , Odontología General , Personal de Salud , Humanos , Reino Unido , Lugar de Trabajo
10.
Int J Pharm Pract ; 26(5): 398-406, 2018 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-29210132

RESUMEN

OBJECTIVES: Following the 2005 contractual framework amendment, the expanding role of community pharmacy team members required a shift in entrenched views on roles and duties. This study aimed to report on community pharmacists' opinions on skill mix and explore how they can be addressed so that skill mix may be optimised. METHODS: An invitation to complete an online questionnaire was distributed via email, marked for the attention of the lead pharmacist. Following a low response, a paper-based questionnaire was sent to all community pharmacies in England (n = 11,816). Questions elicited data about the respondent, the pharmacy (including staffing profile) and opinions on skill mix. KEY FINDINGS: A total of 1154 returns were received, representing a 10% response rate. Of these, most were pharmacy chains (76%; n = 877), with 5-9 staff (54%; n = 600); commonly open 40-49 hours (42%; n = 487), dispensing <6000 prescriptions per week (41%, n = 533). From 26 statements on skill mix, three factors were identified by principal-components factor analysis: 'working well', 'feeling the pressure' and 'open to development'. Characteristics associated with 'working well': pharmacy owners, single businesses, with pharmacy technician(s), dispensing fewer prescriptions and open shorter hours. Characteristics associated with 'feeling the pressure': pharmacy chains, open longer hours, large numbers of prescriptions and relief pharmacists. Characteristics associated with 'open to development': recently qualified, second pharmacists, working longer hours, chains and dispensing lower numbers of prescriptions. CONCLUSIONS: Although limited by a low response, results suggest being in a position to influence (more experienced, business owners) may be associated with more positive opinions. Further training (including about legalities and leadership) could contribute to optimising skill mix in community pharmacies.


Asunto(s)
Actitud , Servicios Comunitarios de Farmacia/organización & administración , Farmacéuticos/organización & administración , Rol Profesional , Carga de Trabajo/psicología , Actitud del Personal de Salud , Inglaterra , Humanos , Farmacias/organización & administración , Técnicos de Farmacia/organización & administración , Técnicos de Farmacia/psicología , Encuestas y Cuestionarios
11.
PLoS Genet ; 13(10): e1007068, 2017 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-29084269

RESUMEN

The coronary vasculature is an essential vessel network providing the blood supply to the heart. Disruptions in coronary blood flow contribute to cardiac disease, a major cause of premature death worldwide. The generation of treatments for cardiovascular disease will be aided by a deeper understanding of the developmental processes that underpin coronary vessel formation. From an ENU mutagenesis screen, we have isolated a mouse mutant displaying embryonic hydrocephalus and cardiac defects (EHC). Positional cloning and candidate gene analysis revealed that the EHC phenotype results from a point mutation in a splice donor site of the Myh10 gene, which encodes NMHC IIB. Complementation testing confirmed that the Myh10 mutation causes the EHC phenotype. Characterisation of the EHC cardiac defects revealed abnormalities in myocardial development, consistent with observations from previously generated NMHC IIB null mouse lines. Analysis of the EHC mutant hearts also identified defects in the formation of the coronary vasculature. We attribute the coronary vessel abnormalities to defective epicardial cell function, as the EHC epicardium displays an abnormal cell morphology, reduced capacity to undergo epithelial-mesenchymal transition (EMT), and impaired migration of epicardial-derived cells (EPDCs) into the myocardium. Our studies on the EHC mutant demonstrate a requirement for NMHC IIB in epicardial function and coronary vessel formation, highlighting the importance of this protein in cardiac development and ultimately, embryonic survival.


Asunto(s)
Vasos Coronarios/crecimiento & desarrollo , Desarrollo Embrionario/genética , Cadenas Pesadas de Miosina/genética , Miosina Tipo IIB no Muscular/genética , Pericardio/crecimiento & desarrollo , Animales , Diferenciación Celular/genética , Vasos Coronarios/metabolismo , Embrión de Mamíferos , Transición Epitelial-Mesenquimal/genética , Humanos , Hidrocefalia/genética , Hidrocefalia/metabolismo , Hidrocefalia/patología , Ratones , Ratones Noqueados , Mutación , Miocardio/metabolismo , Pericardio/metabolismo
12.
Artículo en Inglés | MEDLINE | ID: mdl-27563335

RESUMEN

Aboriginal people of Australia possess a rich knowledge on the use of medicinal plants for the treatment of sores, wounds, and skin infections, ailments which impose a high global disease burden and require effective treatments. The antibacterial and antioxidant activities and phytochemical contents of extracts, obtained from eight medicinal plants used by Aboriginal people of New South Wales, Australia, for the treatment of skin related ailments, were assessed to add value to and provide an evidence-base for their traditional uses. Extracts of Acacia implexa, Acacia falcata, Cassytha glabella, Eucalyptus haemastoma, Smilax glyciphylla, Sterculia quadrifida, and Syncarpia glomulifera were evaluated. All extracts except that of S. quadrifida showed activity against sensitive and multidrug resistant strains of Staphylococcus aureus with minimum inhibitory concentration values ranging from 7.81 to 1000 µg/mL. The sap of E. haemastoma and bark of A. implexa possessed high total phenolic contents (TPC) and strong DPPH radical scavenging abilities. A positive correlation was observed between TPC and free radical scavenging ability. GC-MS analysis of the n-hexane extract of S. glomulifera identified known antimicrobial compounds. Together, these results support the traditional uses of the examined plants for the treatment of skin related ailments and infections by Aboriginal people of New South Wales, Australia.

13.
J Ethnopharmacol ; 185: 171-81, 2016 Jun 05.
Artículo en Inglés | MEDLINE | ID: mdl-26969405

RESUMEN

ETHNOPHARMACOLOGICAL RELEVANCE: The bark of Erythrina stricta Roxb. (Fabaceae) has been used in Indian indigenous systems as a remedy for rheumatism, stomach-ache, asthma, dysentery, contact dermatitis, eczema and skin infections. However, there have been limited phytochemical or biological studies on the bark of E. stricta and there are no studies that align with its traditional medicinal uses. AIM OF THE STUDY: The aim of this study was to assess the antimicrobial and antioxidant activity of the stem bark of E. stricta to support its topical use in the treatment of contact dermatitis, eczema and skin infections and to isolate and identify any bioactive compounds. MATERIALS AND METHODS: MTT microdilution and disc diffusion assays were used to determine the antimicrobial activities of n-hexane, dichloromethane, ethyl acetate, methanol and water extracts of the bark of E. stricta. Column and preparative thin layer chromatography were used for the purification of the dichloromethane extract. The structures of the compounds isolated were elucidated by extensive 1D and 2D NMR spectroscopic techniques and comparison with published data. The antioxidant activities of the extracts were determined by DPPH free radical scavenging and FRAP assays and the antioxidant activity of the pure compounds by dot-blot and DPPH staining methods. RESULTS: The dichloromethane, ethyl acetate, and n-hexane extracts showed the most significant activity with MIC values of 7.8µg/mL, 125µg/mL, and 125µg/mL against a sensitive strain of Staphylococcus aureus. The dichloromethane and ethyl acetate extracts also showed significant activity against Candida albicans with MIC values of 125µg/mL and 1mg/mL respectively. GC-MS analysis of the n-hexane extract showed the presence of the antibacterial and antifungal compounds ß-caryophyllene, caryophyllene oxide, α-selinene, ß-selinene, selin-11-en-4-α-ol, α-copaene and δ-cadenine. Phytochemical studies of the dichloromethane extract led to the isolation of the novel compound erynone (1), together with six known compounds; wighteone (2), alpinum isoflavone (3), luteone (4), obovatin (5), erythrinassinate B (6) and isovanillin (7). Luteone (4) exhibited the most significant antibacterial activity with minimum inhibitory quantity (MIQ) values of 1.88µg, 1.88µg and 3.75µg, respectively, against sensitive (MSSA) and resistant strains (MRSA and MDRSA) of S. aureus using a TLC bioautography assay. Erynone (1) exhibited the greatest DPPH free radical scavenging activity. CONCLUSIONS: Seven compounds, including a new chromanone, were isolated from the antimicrobial dichloromethane extract of the stem bark of E. stricta. Six of the seven compounds showed antibacterial and/or antioxidant activities. These findings provide support for the customary (traditional and contemporary) use of E. stricta bark for the treatment of skin and wound infections.


Asunto(s)
Antibacterianos/farmacología , Antifúngicos/farmacología , Antioxidantes/farmacología , Erythrina/química , Extractos Vegetales/farmacología , Antibacterianos/química , Antifúngicos/química , Antioxidantes/química , Bacterias/efectos de los fármacos , Candida albicans/efectos de los fármacos , Estructura Molecular , Extractos Vegetales/química
14.
Chemistry ; 22(13): 4551-5, 2016 Mar 18.
Artículo en Inglés | MEDLINE | ID: mdl-26880363

RESUMEN

Thailand possesses a rich diversity of orchid species that, in turn, live in symbiosis with a wide variety of fungi. Such endophytes have the potential to produce secondary metabolites with bioactivity against orchid and/or human pathogens. The orchid-associated fungal strain Daldinia eschscholtzii was found to produce a diverse range of aromatic polyketides including the new naphthalene derivatives daldionin, nodulones B and C, and daldinones F and G along with eight known compounds. Daldionin possesses an unprecedented oxane-linked binaphthyl ring system. These compounds demonstrate the high diversity of structural variations that are constructed during fungal biosynthesis, and the results include important observations concerning the biosynthesis of binaphthyl derivatives. Daldionin was found to have weak antiproliferative activity against HUVEC and K-562 cell lines. All but one of the isolated compounds showed moderate antimicrobial activity towards at least one of the four tested microbial strains.


Asunto(s)
Antiinfecciosos/química , Antiinfecciosos/farmacología , Productos Biológicos/química , Endófitos/química , Hongos/química , Compuestos Heterocíclicos con 2 Anillos/química , Compuestos Heterocíclicos con 2 Anillos/farmacología , Compuestos Heterocíclicos con 3 Anillos/química , Compuestos Heterocíclicos con 3 Anillos/farmacología , Naftalenos/química , Policétidos/química , Productos Biológicos/aislamiento & purificación , Productos Biológicos/metabolismo , Línea Celular , Endófitos/aislamiento & purificación , Endófitos/metabolismo , Hongos/metabolismo , Humanos , Tailandia
15.
Nat Prod Rep ; 33(3): 372-81, 2016 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-26739749

RESUMEN

A diverse range of strategies leading to natural product derived or inspired screening libraries aims to increase the number of new chemical entities emerging per year. However, the use of isolated natural products as scaffolds for the semi-synthesis of larger biological screening libraries remains rare. This particular method avoids the time-consuming and resource intensive de novo synthetic strategy for scaffold production, and has become more feasible through improvements to synthetic and isolation methodologies. This Highlight examines the increasing popularity of small- to large-sized screening libraries generated directly from isolated natural products. Several of the examples detailed herein show how this strategy can lead to improvements in not only potency but also other important (and often forgotten) drug discovery parameters such as toxicity, selectivity, lipophilicity and bioavailability. However, there are still improvements to be made to this method, particularly in the choice of the natural product scaffold and the derivatising reagents used. Avoidance of known nuisance compounds or structural alert motifs (e.g. PAINS) that interfere with bioactivity screens, and impact downstream drug development will play a significant role in the future success of this methodology. Incorporation of rational design strategies that take into account the physicochemical parameters (e.g. log P, MW, HBA, HBD) of the final semi-synthetic library analogues will also facilitate the discovery and development of leads and drugs. A multi-pronged approach to drug discovery that incorporates the use of isolated natural product scaffolds for library generation will surely be beneficial.


Asunto(s)
Productos Biológicos/química , Descubrimiento de Drogas , Estructura Molecular , Bibliotecas de Moléculas Pequeñas
16.
J Antibiot (Tokyo) ; 68(7): 463-8, 2015 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-25690358

RESUMEN

Two new benzoxazines were isolated from Streptomyces griseus (HKI 0545) and assigned as chandrananimycin E (1) and dandamycin (2). Although a number of phenoxazinone-type compounds have been reported from nature, phenoxazines are rarer, and carbon substitution at N-10 such as in 1 is unprecedented. The cyclopentene-containing ring structure of dandamycin (2) is also unique. Chandrananimycin E (1) was found to possess moderate antiproliferative activity against HUVEC cells (GI50 35.3 µM) and weak cytotoxic activity towards HeLa cells (CC50 56.9 µM). Dandamycin showed neither antiproliferative activity nor cytotoxicity towards these cell lines. Structure activity comparisons with phenoxazinones isolated from S. griseus HKI 0545 suggested that the alteration of the core ring systems in 1 and 2 diminishes their activity. Natural products 1 and 2 are interesting additions to the rich secondary metabolome of S. griseus and constitute an important addition to the body of knowledge on phenoxazinone-derived metabolites.


Asunto(s)
Antibióticos Antineoplásicos/aislamiento & purificación , Benzoxazinas/aislamiento & purificación , Streptomyces griseus/química , Antibióticos Antineoplásicos/química , Benzoxazinas/química , Proliferación Celular/efectos de los fármacos , Supervivencia Celular/efectos de los fármacos , Células Cultivadas , Células Endoteliales/efectos de los fármacos , Células Endoteliales/fisiología , Células Epiteliales/efectos de los fármacos , Células Epiteliales/fisiología , Humanos , Estructura Molecular , Streptomyces griseus/metabolismo , Relación Estructura-Actividad
17.
Ophthalmic Physiol Opt ; 34(5): 614-21, 2014 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-25160894

RESUMEN

PURPOSE: To enhance continuing professional development and address the risk that professional isolation poses, the UK General Optical Council introduced a requirement for all optometrists to engage in at least one case-based discussion per 3 year cycle of continuing education. In this paper, we explore participants' impression of the acceptability, effectiveness and long-term impact-on-practice of case-based discussion as a mode of continuing education. METHODS: Case-based discussion participants attended an evening session comprising a lecture and a group discussion. They completed three questionnaires: prior to the session, immediately post-session and 3-4 months post-session. We coded the questionnaires to allow matching. RESULTS: Seventy-five case-based discussion groups were held with 379 participants; 377 completed both pre- and post-questionnaires and 331 (88%) returned a follow-up questionnaire. Case-based discussions were an acceptable method of learning, with many preferring it to distance-learning. Prior to the event, women, employees and part-time workers were more likely to have concerns about participating. In terms of learning, gaps in knowledge were more likely to be revealed in those who work in isolation. The respondents highlighted social aspects, reassurance of practice as well as new learning. Participants significantly improved self-confidence ratings in all key learning areas. At three months post-session, the majority (75%) self-reported that they had implemented their intended changes to practice. CONCLUSIONS: The evaluation showed that participants felt that case-based discussion developed their knowledge, notably for sole practitioners, and influenced later workplace practice. The peer interaction of this mode of continuing education can combat professional isolation.


Asunto(s)
Educación Médica Continua/métodos , Educación Profesional/métodos , Optometría/educación , Femenino , Humanos , Masculino , Sociedades Médicas , Encuestas y Cuestionarios , Enseñanza/métodos , Reino Unido
18.
Genesis ; 52(8): 713-37, 2014 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-24866031

RESUMEN

Genes required for an organism to develop to maturity (for which no other gene can compensate) are considered essential. The continuing functional annotation of the mouse genome has enabled the identification of many essential genes required for specific developmental processes including cardiac development. Patterns are now emerging regarding the functional nature of genes required at specific points throughout gestation. Essential genes required for development beyond cardiac progenitor cell migration and induction include a small and functionally homogenous group encoding transcription factors, ligands and receptors. Actions of core cardiogenic transcription factors from the Gata, Nkx, Mef, Hand, and Tbx families trigger a marked expansion in the functional diversity of essential genes from midgestation onwards. As the embryo grows in size and complexity, genes required to maintain a functional heartbeat and to provide muscular strength and regulate blood flow are well represented. These essential genes regulate further specialization and polarization of cell types along with proliferative, migratory, adhesive, contractile, and structural processes. The identification of patterns regarding the functional nature of essential genes across numerous developmental systems may aid prediction of further essential genes and those important to development and/or progression of disease.


Asunto(s)
Regulación del Desarrollo de la Expresión Génica/genética , Genes Esenciales/genética , Corazón/crecimiento & desarrollo , Mamíferos/genética , Animales , Diferenciación Celular , Movimiento Celular , Corazón/embriología , Mamíferos/embriología , Mamíferos/crecimiento & desarrollo , Ratones , Células Madre
19.
Eur J Orthod ; 36(5): 512-21, 2014 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-23291502

RESUMEN

The aim of this clinical trial was to compare the hard- and soft-tissue effects of 15 month full-time functional appliance therapy with Twin Block (TB) and Dynamax (Dx) appliances. The effects on both hard and soft tissue were analysed using cephalograms and three-dimensional optical surface laser scans. One hundred and three subjects with a class II division 1 malocclusion, and a minimum overjet of 7mm were available for analysis following stratified randomization according to gender and age. Data was collected at the start of treatment, 15 month therapy, and after 3 month post-treatment observation. Statistical analysis was conducted using analysis of covariance. The results demonstrated both appliances corrected the overjet with significantly increased skeletal dimensional changes with the TB compared with the Dx with forward movement of pogonion of 5.2mm (TB) and 0.7mm (Dx) P = 0.003. In addition, significant changes occurred particularly in the vertical dimension where there was also an increase in total anterior face height in both groups (TB = 6.4mm, Dx = 5.5mm) and significant (P = 0.003) mandibular length changes were also observed (TB = 7.2mm, Dx = 3.8mm). The cephalometric soft-tissue changes were significantly different between the two appliances at soft-tissue pogonion (TB = 9.8mm, Dx = 4.6mm, P = 0.001). Laser scan three-dimansional changes showed significant difference in the lower labial sulcus region where forward movements were observed (TB = 8.2mm, Dx = 6.2mm; P = 0.04). Overall these changes appear to be greater and more stable than those achieved in a previous 9 month study.


Asunto(s)
Maloclusión Clase II de Angle/terapia , Diseño de Aparato Ortodóncico , Aparatos Ortodóncicos Funcionales , Adolescente , Cefalometría/métodos , Niño , Mentón/patología , Femenino , Estudios de Seguimiento , Humanos , Procesamiento de Imagen Asistido por Computador/métodos , Imagenología Tridimensional/métodos , Rayos Láser , Labio/patología , Masculino , Mandíbula/patología , Maxilar/patología , Hueso Nasal/patología , Sobremordida/terapia , Dimensión Vertical
20.
Phytochemistry ; 93: 162-9, 2013 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-23602054

RESUMEN

Chemical investigations of the aerial parts of the Australian plant Eremophila microtheca resulted in the isolation of three serrulatane diterpenoids, 3-acetoxy-7,8-dihydroxyserrulat-14-en-19-oic acid (1), 3,7,8-trihydroxyserrulat-14-en-19-oic acid (2) and 3,19-diacetoxy-8-hydroxyserrulat-14-ene (3) as well as the previously reported compounds verbascoside (4) and jaceosidin (5). Acetylation and methylation of the major serrulatane diterpenoid 2 afforded 3,8-diacetoxy-7-hydroxyserrulat-14-en-19-oic acid (6) and 3,7,8-trihydroxyserrulat-14-en-19-oic acid methyl ester (7), respectively. The antibacterial activity of 1-7 was assessed against a panel of Gram-positive and Gram-negative bacterial isolates. All of the serrulatane compounds exhibited moderate activity against Streptococcus pyogenes (ATCC 12344) with minimum inhibitory concentrations (MICs) ranging from 64-128 µg/mL. Serrulatane 1 demonstrated activity against all Gram-positive bacterial strains (MICs 64-128 µg/mL) except for Enterococcus faecalis and Enterococcus faecium. This is the first report of natural products from E. microtheca.


Asunto(s)
Antibacterianos/farmacología , Diterpenos/farmacología , Eremophila (Planta)/química , Staphylococcus/efectos de los fármacos , Antibacterianos/química , Antibacterianos/aislamiento & purificación , Australia , Diterpenos/química , Diterpenos/aislamiento & purificación , Relación Dosis-Respuesta a Droga , Pruebas de Sensibilidad Microbiana , Estructura Molecular , Relación Estructura-Actividad
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