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1.
Cureus ; 14(7): e26930, 2022 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-35989817

RESUMEN

Although parastomal hernias have a high incidence in the general population, involvement of the stomach remains rare due to the numerous suspensory structures tethering this organ in its anatomical location. This case details a 75-year-old lady with a painless onset of a gastric parastomal hernia with progressive incarceration over a two-week period. The deteriorating clinical condition of the patient following weeks of stability indicated that the cause of symptoms is likely sinister. Imaging confirmed incarceration of the stomach within a parastomal hernia. Although this has been reported previously, there is little to suggest this condition exists with an insidious onset. Patients who are at high risk of gastric herniation and who fit this clinical vignette with a known parastomal hernia should be offered prompt investigations to ascertain the diagnosis and facilitate further management.

2.
J Med Chem ; 65(13): 8843-8854, 2022 07 14.
Artículo en Inglés | MEDLINE | ID: mdl-35729784

RESUMEN

Protease-activated receptor 4 (PAR4) is a G-protein coupled receptor that is expressed on human platelets and activated by the coagulation enzyme thrombin. PAR4 plays a key role in blood coagulation, and its importance in pathological thrombosis has been increasingly recognized in recent years. Herein, we describe the optimization of a series of imidazothiadiazole PAR4 antagonists to a first-in-class clinical candidate, BMS-986120 (43), and a backup clinical candidate, BMS-986141 (49). Both compounds demonstrated excellent antithrombotic efficacy and minimal bleeding time prolongation in monkey models relative to the clinically important antiplatelet agent clopidogrel and provide a potential opportunity to improve the standard of care in the treatment of arterial thrombosis.


Asunto(s)
Agregación Plaquetaria , Trombosis , Benzofuranos , Plaquetas , Humanos , Imidazoles , Morfolinas , Receptor PAR-1 , Receptores de Trombina , Tiazoles , Trombina , Trombosis/tratamiento farmacológico
3.
Arch Public Health ; 80(1): 14, 2022 Jan 04.
Artículo en Inglés | MEDLINE | ID: mdl-34983667

RESUMEN

BACKGROUND: Participant enrolment, assessment and/or delivery of intervention in many clinical trials during the COVID-19 pandemic were severely impacted by public health measures limiting physical contact. This report describes the lessons learned in completing a repeated measures cohort study involving suspected and confirmed COVID-19 survivors at three sites in Perth, Western Australia. MAIN BODY: An observational analysis of the conduct and data completeness results of the LATER-19 trial. People with COVID19 symptoms who were tested between February and November 2020 were recruited. In both those who tested positive and those who tested negative (control group) for COVID19, data on physical function and mental health were collected at two time points up to eight months after COVID19 testing. Recruitment of the controls was targeted from hospital records for comparison, it was balanced for age and sex and for the non-hospitalised group also comorbidities. A sample of 344 participants was recruited: 155 (45.1%) COVID-19 positive. Taking the research design and environmental adaptations into account, we recorded > 90% participant engagement during the trial. Of the 637 planned assessments, objective measures were completed on 602 (94.5%) occasions; 543 (90.2%) were on-site and 59 (9.8%) were remote. A total of 577 (90.6%) mental health/symptoms surveys, 569 (89.3%) 1-min sit-to-stand tests, and 520 (81.6%) handgrip strength tests were completed. CONCLUSION: The sample size and high completion rate of planned assessments during the LATER-19 trial potentially increases the contextual, groupwise generalisability of the results. The results demonstrate the effectiveness of a simple, rapid, reproducible and adaptable battery of assessments, leveraging telehealth and digital solutions. TRIAL REGISTRATION NUMBER: Australian and New Zealand Clinical Trial Registration (ANZCTR): ACTRN12621001067864 .

4.
Int J Psychiatry Clin Pract ; 26(3): 303-315, 2022 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-34941467

RESUMEN

BACKGROUND: Mental capacity for treatment decisions in psychiatry inpatients is an important ethical and legal concern, especially in light of changes in mental capacity legislation in many jurisdictions. AIMS: To conduct a systematic review of literature examining the prevalence of mental capacity for treatment decisions among voluntary and involuntary psychiatry inpatients, and to assess any correlations between research tools used to measure mental capacity and binary judgements using criteria such as those in capacity legislation. METHOD: We searched PsycINFO, Ovid MEDLINE and EMBASE for studies assessing mental capacity for treatment decisions in people admitted voluntarily and involuntarily to psychiatric hospitals. RESULTS: Forty-five papers emanating from 33 studies were identified. There was huge variability in study methods and often selective populations, but the prevalence of decision-making capacity varied between 5% and 83.7%. These figures resulted from studies using cut-off scores or categorical criteria only. The prevalence of decision-making capacity among involuntary patients ranged from 7.7% to 42%, and among voluntary patients ranged from 29% to 97.9%. Two papers showed positive correlations between clinicians' judgement of decision-making capacity and scores on the MacArthur Competence Assessment Tool for Treatment; two papers showed no such correlation. CONCLUSIONS: Not all voluntary psychiatry inpatients possess mental capacity and many involuntary patients do. This paradox needs to be clarified and resolved in mental health legislation; supported decision-making can help with this task.Key PointsLegislative changes for mental capacity are taking place in many jurisdictions.This is an important human rights issue for many people, including psychiatry inpatients.In our review, we found the prevalence of decision-making capacity varies between 5% and 83.7% in psychiatry inpatients.Not all voluntary inpatients have decision-making capacity.Many involuntary inpatients have mental capacity to make decisions.Supported decision-making can help those with impairments in their mental capacity.


Asunto(s)
Trastornos Mentales , Psiquiatría , Humanos , Competencia Mental/psicología , Pacientes Internos/psicología , Toma de Decisiones , Consentimiento Informado , Trastornos Mentales/terapia , Trastornos Mentales/psicología
5.
Phys Ther ; 100(8): 1411-1418, 2020 08 12.
Artículo en Inglés | MEDLINE | ID: mdl-32383770

RESUMEN

OBJECTIVE: Healthy working-aged adults performed the modified Chester Step Test (mCST) to (1) determine the effect of repetition on test duration, (2) report cardiorespiratory and symptom responses, (3) establish a regression equation to estimate duration, and (4) calculate the minimal detectable change of the test. METHODS: In this observational study conducted in a hospital physical therapy, adult participants aged 25 to 65 years who were healthy performed the mCST twice. This submaximal test required participants to step on and off a 20-cm step at a standardized cadence that increased every 2 minutes. The criteria for test completion were either a heart rate equal to 80% of age-predicted maximum or the onset of intolerable symptoms. The primary measure was time to test completion during the mCST (seconds). Cardiorespiratory and symptom responses were also collected during the mCST. RESULTS: A total of 83 participants (40 men, mean [SD] age = 44 [12] years) completed data collection. There was no systematic effect of test repetition with median test duration of the first test (522 seconds, range = 400-631 seconds) and second test (501 seconds, range = 403-631 seconds). The test elicited moderate symptoms of breathlessness and leg fatigue. In the multivariable model, age, sex, weight, and height were retained as significant predictors of test duration (R2 = 0.48). The minimal detectable change was 119 seconds. CONCLUSIONS: The mCST is a reliable and valid clinically applicable test of aerobic capacity in working-aged adults. Independent pretest predictors can be used to estimate the clinical time required to complete the test. IMPACT: The mCST was stable between test repetitions, suggesting no learning effect. For any given individual, a test duration change of 2 minutes represents change was beyond the natural variability. The mCST has good applicability to clinical settings.


Asunto(s)
Prueba de Esfuerzo/métodos , Frecuencia Cardíaca/fisiología , Subida de Escaleras/fisiología , Adulto , Factores de Edad , Anciano , Capacidad Cardiovascular/fisiología , Estudios Transversales , Disnea/etiología , Fatiga/etiología , Femenino , Voluntarios Sanos , Humanos , Masculino , Persona de Mediana Edad , Factores Sexuales , Factores de Tiempo , Soporte de Peso/fisiología
6.
Clin Rehabil ; 34(1): 45-55, 2020 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-31552759

RESUMEN

OBJECTIVE: In adults hospitalized with an acute or chronic respiratory condition, to determine what has been reported regarding exercise programmes in terms of content, tolerability, evaluation and adverse events. DATA SOURCES: A systematic search was conducted of electronic databases (PubMed, EMBASE, CINAHL, PEDro, The Cochrane Library), trial registries and conference abstracts (Thoracic Society of Australia and New Zealand Annual Scientific Meeting, the European Respiratory Society Congress, the American Thoracic Society International Conference). REVIEW METHODS: Studies were included if they (1) recruited adults hospitalized with an acute or chronic respiratory condition, (2) described an exercise programme that targeted peripheral muscles and (3) reported that ⩾80% of the sample had initiated training within 72 hours of hospitalization. RESULTS: The last search was conducted on 2 June 2019. Of the 6282 records identified, 20 met the study criteria. These described 18 separate studies (2018 participants). Studies were conducted in adults hospitalized with an exacerbation of chronic obstructive pulmonary disease or with community-acquired pneumonia. The content of exercise programmes included aerobic and/or resistance training, neuromuscular electrical stimulation, whole-body vibration or movement out of bed. In eight studies (44%), the initial session was prescribed using objective measures of exercise capacity, peripheral muscle force and the ability to undertake activities of daily living. Across 7420 training sessions, seven adverse events were reported. CONCLUSION: Methods used to prescribe and titrate exercise programmes in adults hospitalized with an acute or an exacerbation of a chronic respiratory condition were disparate. When reported, programmes were well tolerated and adverse events were infrequent.


Asunto(s)
Terapia por Ejercicio , Trastornos Respiratorios/terapia , Adulto , Enfermedad Crónica , Infecciones Comunitarias Adquiridas/complicaciones , Infecciones Comunitarias Adquiridas/terapia , Hospitalización , Humanos , Neumonía/complicaciones , Neumonía/terapia , Enfermedad Pulmonar Obstructiva Crónica/complicaciones , Enfermedad Pulmonar Obstructiva Crónica/terapia , Trastornos Respiratorios/etiología
7.
Respir Care ; 65(4): 455-463, 2020 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-31575707

RESUMEN

BACKGROUND: In adults hospitalized with community-acquired pneumonia (CAP), increasing ward-based walking may reduce length of stay (LOS). There are few data to describe ward-based walking in this population. In adults hospitalized with CAP, we aimed to report variables of walking and non-walking time, to determine whether demographic or clinical variables influenced daily step count, and to determine whether daily step count influenced LOS. METHODS: Following admission, daily step count and variables related to walking and non-walking time were quantified using the StepWatch Activity Monitor. Details regarding demographics, clinical characteristics, clinical care, and LOS were extracted from the medical records and hospital electronic data systems. Frailty was calculated via the 7-point Clinical Frailty Scale; disease severity was measured via the CURB-65 score. Health care utilization at 30 d following discharge was measured via telephone interview. RESULTS: Two hundred participants completed the study, of whom 121 contributed ≥ 24 h of data from the StepWatch Activity Monitor. The median (interquartile range (IQR)) number of daily steps was 926 (457-1706). These were accumulated over 66 (41-121) min/d, with a usual bout duration of 3 (2-4) min and 1-min peak cadence of 56 (43-74) steps/min. An average of 93% (89-96) of waking hours was spent in non-walking time. In the multivariable model, increased frailty was retained as a predictor of lower step count (incidence rate ratio [IRR] 0.59, 95% CI 0.41-0.85). For every increase in 500 steps/d, LOS reduced by 11% (IRR 0.89, 95% CI 0.80-0.99). CONCLUSIONS: Subjects hospitalized with CAP did very little walking, most of which was accumulated in short bouts at a low intensity. Compared with subjects with mild frailty, those with moderate to severe frailty took 59% fewer steps per day. Those with a higher daily step count had a shorter LOS.


Asunto(s)
Infecciones Comunitarias Adquiridas/rehabilitación , Fragilidad , Hospitalización , Neumonía/rehabilitación , Caminata , Adulto , Anciano , Femenino , Humanos , Tiempo de Internación , Masculino , Persona de Mediana Edad , Alta del Paciente , Estudios Prospectivos , Índice de Severidad de la Enfermedad
8.
Rural Remote Health ; 19(4): 5449, 2019 11.
Artículo en Inglés | MEDLINE | ID: mdl-31760754

RESUMEN

Evaluation expertise to assist with identifying improvements, sourcing relevant literature and facilitating learning from project implementation is not routinely available or accessible to not-for-profit organisations. The right information, at the right time and in an appropriate format, is not routinely available to program managers. Program management team members who were implementing The Fred Hollows Foundation's Indigenous Australia Program's Trachoma Elimination Program required information about what was working well and what required improvement. This article describes a way of working where the program management team and an external evaluation consultancy collaboratively designed and implemented an utilisation-focused evaluation, informed by a developmental evaluation approach. Additionally, principles of knowledge translation were embedded in this process, thereby supporting the evaluation to translate knowledge into practice. The lessons learned were that combining external information and practice-based knowledge with local knowledge and experience is invaluable; it is useful to incorporate evaluative information from inception and for the duration of a program; a collaborative working relationship can result in higher quality information being produced and it is important to communicate findings to different audiences in different formats.


Asunto(s)
Promoción de la Salud/organización & administración , Servicios de Salud del Indígena/organización & administración , Hospitales Filantrópicos/organización & administración , Nativos de Hawái y Otras Islas del Pacífico/estadística & datos numéricos , Calidad de la Atención de Salud/organización & administración , Australia , Promoción de la Salud/estadística & datos numéricos , Servicios de Salud del Indígena/estadística & datos numéricos , Hospitales Filantrópicos/estadística & datos numéricos , Humanos , Calidad de la Atención de Salud/estadística & datos numéricos
9.
J Med Chem ; 62(16): 7400-7416, 2019 08 22.
Artículo en Inglés | MEDLINE | ID: mdl-31246024

RESUMEN

In an effort to identify novel antithrombotics, we have investigated protease-activated receptor 4 (PAR4) antagonism by developing and evaluating a tool compound, UDM-001651, in a monkey thrombosis model. Beginning with a high-throughput screening hit, we identified an imidazothiadiazole-based PAR4 antagonist chemotype. Detailed structure-activity relationship studies enabled optimization to a potent, selective, and orally bioavailable PAR4 antagonist, UDM-001651. UDM-001651 was evaluated in a monkey thrombosis model and shown to have robust antithrombotic efficacy and no prolongation of kidney bleeding time. This combination of excellent efficacy and safety margin strongly validates PAR4 antagonism as a promising antithrombotic mechanism.


Asunto(s)
Benzofuranos/farmacología , Fibrinolíticos/farmacología , Hemorragia/prevención & control , Receptores de Trombina/antagonistas & inhibidores , Trombosis/prevención & control , Animales , Benzofuranos/química , Benzofuranos/farmacocinética , Disponibilidad Biológica , Modelos Animales de Enfermedad , Fibrinolíticos/química , Fibrinolíticos/farmacocinética , Células HEK293 , Hemorragia/metabolismo , Humanos , Macaca fascicularis , Modelos Químicos , Estructura Molecular , Agregación Plaquetaria/efectos de los fármacos , Receptores de Trombina/genética , Receptores de Trombina/metabolismo , Relación Estructura-Actividad , Trombosis/metabolismo
10.
BMJ Case Rep ; 12(4)2019 Apr 11.
Artículo en Inglés | MEDLINE | ID: mdl-30975781

RESUMEN

A 22-year-old woman presented to her local district hospital with left-sided abdominal pain. She denied any urinary or gastrointestinal symptoms. She had a CT scan of her abdomen which showed a probable 8×5×8 cm left-sided adrenal mass. Functional tests for hormone excess were negative. She was referred to a tertiary referral centre and given the size of the adrenal mass; she consented for laparoscopic left adrenalectomy. During the operation, the mass was grossly adherent to the celiac axis, left renal pedicle and DJ flexure. A small nodule posterior to the renal vein was also identified. The operation was completed laparoscopically and she made an uneventful recovery. The specimen was reported as a poorly differentiated neuroblastoma. She had a postoperative MIBG scan which was negative for residual or metastatic disease. She was commenced on platinum-based chemotherapy with a plan for further radiological follow-up.


Asunto(s)
Neoplasias de las Glándulas Suprarrenales/diagnóstico , Neuroblastoma/diagnóstico , Neoplasias de las Glándulas Suprarrenales/diagnóstico por imagen , Neoplasias de las Glándulas Suprarrenales/terapia , Adrenalectomía , Terapia Combinada , Diagnóstico Diferencial , Femenino , Humanos , Laparoscopía , Neuroblastoma/diagnóstico por imagen , Neuroblastoma/terapia , Tomografía Computarizada por Rayos X , Adulto Joven
11.
Eur J Surg Oncol ; 45(4): 631-634, 2019 04.
Artículo en Inglés | MEDLINE | ID: mdl-30638808

RESUMEN

BACKGROUND: Adrenal metastases can arise from different primary sites. Surgical resection of the adrenal gland in patients with isolated metastases may offer improved survival in many of these patients. However, the benefit of surgery in this heterogenous group is often disputed. The aim of this study was to identify patients undergoing adrenalectomy for isolated metastases and to describe survival outcomes based on origin of the primary malignancy. METHODS: Patients undergoing surgery for isolated adrenal metastases were retrospectively analysed from a prospectively kept database. Data collected included the age of the patient, gender, size and functional status of the tumour and the site of the primary malignancy. Overall survival and survival based on the primary tumour were calculated using Kaplan-Meier survival analyses. RESULTS: 42 patients were included for analysis. The median tumour size was 40 mm. 91% (n = 38) of operations were performed laparoscopically. Metastases were from the following primary organs: kidney (n = 22), lung (n = 11), breast (n = 2), gastric (n = 1), skin (n = 3), liver (n = 2) and neuroendocrine (n = 1). Overall median survival was 56 (19-93) months with 95% of patients followed up for >6 months. There was a significant difference in median survival between primary organs of origin: 83(42-123), 14(9-18), 15 and 12(3-20) months (p < 0.05) for kidney, lung, breast and skin respectively. CONCLUSION: There is a potential survival benefit for patients undergoing surgery for isolated adrenal metastases; however this survival benefit is greater in patients undergoing resection for metastases arising from kidney primaries. A selective approach should be adopted to identify patients that will clearly benefit from surgery.


Asunto(s)
Neoplasias de las Glándulas Suprarrenales/cirugía , Adrenalectomía , Neoplasias de la Mama/patología , Neoplasias Renales/patología , Neoplasias Hepáticas/patología , Neoplasias Pulmonares/patología , Neoplasias Cutáneas/patología , Neoplasias Gástricas/patología , Neoplasias de las Glándulas Suprarrenales/secundario , Adulto , Anciano , Femenino , Humanos , Estimación de Kaplan-Meier , Masculino , Persona de Mediana Edad , Tumores Neuroendocrinos/patología , Estudios Retrospectivos , Tasa de Supervivencia
12.
BMJ Case Rep ; 20182018 Jun 21.
Artículo en Inglés | MEDLINE | ID: mdl-29930184

RESUMEN

A 32-year-old man was referred to our surgical unit with a left adrenal lesion. He was previously diagnosed with Birt-Hogg-Dube syndrome after presenting with a left pneumothorax and an incidental finding of a right apical lung mass. This syndrome is characterised commonly by benign skin hamartomas, recurrent pneumothoraces and an increased risk of renal tumours. He was unable to tolerate a biopsy of his lung lesion, however, this lung lesion was thought to be benign. Given the size of his adrenal lesion and radiological appearances, we performed a laparoscopic left adrenalectomy. Pathology confirmed that based on morphological appearances and immunohistochemical staining, this may represent an oncocytic tumour of the adrenal gland. This is only the third published case of an oncocytic tumour of the adrenal gland in a patient with Birt-Hogg-Dube syndrome.


Asunto(s)
Adenoma Oxifílico/diagnóstico , Neoplasias de las Glándulas Suprarrenales/diagnóstico , Síndrome de Birt-Hogg-Dubé/complicaciones , Adenoma Oxifílico/patología , Neoplasias de las Glándulas Suprarrenales/patología , Adrenalectomía , Adulto , Humanos , Laparoscopía , Masculino
13.
J Dr Nurs Pract ; 11(2): 100-106, 2018 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-32745015

RESUMEN

BACKGROUND: Little is known about available guidelines that can be used to evaluate health systems' Doctor of Nursing Practice (DNP) capstone projects. OBJECTIVES: The twofold purpose of this study was to identify the scope of nurse executive leadership practices, as demonstrated in final health systems' DNP Projects and propose a framework to guide evaluating health systems' DNP capstone projects. METHODS: This qualitative study used content analysis to evaluate DNP project posters of 10 health systems' DNP students graduating from one Midwestern college of nursing. Students were engaged in activities pertinent to managerial and executive-level nurse leaders. RESULTS: Students were engaged in activities pertinent to both managerial and executive level nurse leaders and followed AONE competencies. Leadership styles were operational and transformational. Six types of activities were identified. Leadership activities and themes were organized into a framework for action that can guide curriculum. CONCLUSIONS: The Framework for Action themes can be used to coach students in nurse manager or executive roles and identify developmental needs of students. IMPLICATIONS FOR NURSING: A specific new competency on impact is indicated. Use of simulation techniques is an opportunity in health systems education.

14.
J Surg Case Rep ; 2017(7): rjx125, 2017 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-28852452

RESUMEN

Human immunodeficiency virus (HIV) is well known to be associated with various neoplasms and opportunistic infections. Kaposi sarcoma (KS), associated with human herpes virus 8 (HHV8) infection, is the most common tumour in HIV positive patients and is also an acquired immune deficiency syndrome (AIDS) defining illness. Cutaneous manifestations are the most common presenting symptom; however, visceral involvement is also recognized. We present the case of a 55-year-old male who was diagnosed with AIDS-related KS, who was referred to our surgical unit with an indeterminate left adrenal lesion. He subsequently started antiretroviral therapy and given the indeterminate nature of his adrenal lesion, we performed a laparoscopic left adrenalectomy, with KS of the adrenal gland confirmed on histology.

15.
Scott Med J ; 62(1): 11-15, 2017 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-28110628

RESUMEN

Background and aims Sublingual glyceryl trinitrate has been used as an aid to cannulate the Sphincter of Oddi during endoscopic retrograde cholangiopancreatography. Its role in terminal ileal intubation during colonoscopy is unknown. This study examines the role of sublingual glyceryl trinitrate in terminal ileal intubation during colonoscopy. Methods A triple-blind randomized controlled trial comparing sublingual glyceryl trinitrate (800 µg) vs. placebo (saline) in relation to terminal ileal intubation during colonoscopy was performed. Following caecal intubation, participants received sublingual glyceryl trinitrate/placebo followed by a 2-min observation period before intubation was attempted. Data on time to intubate the terminal ileum and intubation rate were collected. Results A total of 110 patients (age: 58 years (18-75)) were recruited and randomised as per protocol: 54 received sublingual glyceryl trinitrate. Terminal ileal intubation was successful in all patients receiving sublingual glyceryl trinitrate and in 53 (94.6%) of those receiving saline ( p = 0.243: Fischer's exact). The median time taken for ileal intubation after application of spray was 72.5 (7-900) s in the glyceryl trinitrate group compared with 125 (5-900) s in the placebo group ( p = 0.150: Mann-Whitney). There were no major adverse events reported in either group. Conclusions Terminal ileal intubation rates and timing were very good in both groups. Routine sublingual glyceryl trinitrate was not proven to be beneficial in improving terminal ileal intubation or intubation success rates in the hands of experienced colonoscopists. However, trends in this small study might suggest that glyceryl trinitrate could be useful in the hands of less experienced colonoscopists or in difficult terminal ileal intubation cases.


Asunto(s)
Colonoscopía , Enfermedades del Íleon/terapia , Íleon/patología , Intubación , Nitroglicerina/administración & dosificación , Nitroglicerina/uso terapéutico , Administración Sublingual , Adolescente , Adulto , Anciano , Humanos , Enfermedades del Íleon/patología , Persona de Mediana Edad , Guías de Práctica Clínica como Asunto , Vasodilatadores/administración & dosificación , Vasodilatadores/uso terapéutico , Adulto Joven
16.
Sci Transl Med ; 9(371)2017 01 04.
Artículo en Inglés | MEDLINE | ID: mdl-28053157

RESUMEN

Antiplatelet agents are proven efficacious treatments for cardiovascular and cerebrovascular diseases. However, the existing drugs are compromised by unwanted and sometimes life-threatening bleeding that limits drug usage or dosage. There is a substantial unmet medical need for an antiplatelet drug with strong efficacy and low bleeding risk. Thrombin is a potent platelet agonist that directly induces platelet activation via the G protein (heterotrimeric guanine nucleotide-binding protein)-coupled protease-activated receptors PAR1 and PAR4. A PAR1 antagonist is approved for clinical use, but its use is limited by a substantial bleeding risk. Conversely, the potential of PAR4 as an antiplatelet target has not been well characterized. Using anti-PAR4 antibodies, we demonstrated a low bleeding risk and an effective antithrombotic profile with PAR4 inhibition in guinea pigs. Subsequently, high-throughput screening and an extensive medicinal chemistry effort resulted in the discovery of BMS-986120, an orally active, selective, and reversible PAR4 antagonist. In a cynomolgus monkey arterial thrombosis model, BMS-986120 demonstrated potent and highly efficacious antithrombotic activity. BMS-986120 also exhibited a low bleeding liability and a markedly wider therapeutic window compared to the standard antiplatelet agent clopidogrel tested in the same nonhuman primate model. These preclinical findings define the biological role of PAR4 in mediating platelet aggregation. In addition, they indicate that targeting PAR4 is an attractive antiplatelet strategy with the potential to treat patients at a high risk of atherothrombosis with superior safety compared with the current standard of care.


Asunto(s)
Anticuerpos/uso terapéutico , Fibrinolíticos/uso terapéutico , Hemorragia/tratamiento farmacológico , Inhibidores de Agregación Plaquetaria/uso terapéutico , Receptores de Trombina/antagonistas & inhibidores , Administración Oral , Animales , Plaquetas/metabolismo , Cobayas , Células HEK293 , Humanos , Concentración 50 Inhibidora , Macaca fascicularis , Masculino , Dominios Proteicos , Receptor PAR-1/metabolismo , Accidente Cerebrovascular/tratamiento farmacológico , Trombina/química , Trombosis , Resultado del Tratamiento
17.
J Nurs Educ ; 55(2): 113-7, 2016 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-26814824

RESUMEN

BACKGROUND: Currently, no doctoral guidelines to teach innovation exist. Using Christensen's theory of disruptive innovation, the five discovery skills used by disruptive innovators provide the framework for designing a leadership development approach to enable and support a mindset to innovate. METHOD: Executive leadership students were provided with didactic content on innovation, were assigned to non-healthcare settings for an anthropological dig to uncover innovative activities, and were provided with reflective prompts to enable a new context for innovation. Faculty collaborated with other fields and took risks to provide new contexts to innovate. RESULTS: Students identified and proposed innovations for current health care issues. Some of the innovations included processes, evaluation methods, data analytics for care design, and patient engagement solutions. CONCLUSION: Faculty crossed borders for field experiences, as well as disciplinary borders. This collaborative seminar demonstrated that it is possible to develop executive nurse leaders to innovate.


Asunto(s)
Educación en Enfermería , Liderazgo , Iowa , Terapias en Investigación
18.
J Thromb Thrombolysis ; 41(3): 514-21, 2016 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-26660522

RESUMEN

Adenosine diphosphate directly induces platelet aggregation via the G-protein coupled P2Y1 and P2Y12 receptors. P2Y12, but not P2Y1, receptor antagonists are available in the clinic. The relevance of the P2Y1 receptor as an antiplatelet target has been studied in rodents, but not in higher species. We therefore examined effects of the pharmacological blockade of the P2Y1 receptor with its selective antagonist MRS2500 in monkey models of electrolytic-mediated arterial thrombosis (ECAT) and kidney bleeding time (KBT). Abciximab, a GPIIb-IIIa antagonist, and cangrelor, a P2Y12 antagonist, were utilized to validate these monkey models. Compounds were given IV at 15-60 min before thrombosis initiation in anesthetized monkeys. Scanning electron microscopy showed the luminal surface of thrombotic artery covered with platelet aggregates and fibrin network. Administration of abciximab at 0.25 and 0.7 mg/kg IV significantly reduced thrombus weight by 71 ± 1 and 100 ± 0 %, and increased KBT by 10.0 ± 0.1- and 10.1 ± 0-fold, respectively (n = 3/dose). Likewise, cangrelor at 0.6 and 2 mg/kg/h IV significantly reduced thrombus weight significantly by 72 ± 9 % and 100 ± 0 % and increased KBT by 2.1 ± 0.1- and 9.8 ± 0.2-fold, respectively (n = 3/dose). MRS2500 [mg/kg + mg/kg/h IV] at 0.09 + 0.14 and 0.45 + 0.68 significantly reduced thrombus weight by 57 ± 1 % and 88 ± 1 % and increased KBT by 2.1 ± 0.3- and 4.9 ± 0.6-fold, respectively (n = 4/dose). In summary, MRS2500 prevented occlusive arterial thrombosis at a dose that moderately prolonged KBT, indicating a role of P2Y1 receptors in arterial thrombosis and hemostasis in monkeys. Thus P2Y1 receptor antagonism provides a suitable target for drug discovery.


Asunto(s)
Arterias Carótidas , Nucleótidos de Desoxiadenina/farmacología , Agonistas del Receptor Purinérgico P2Y/farmacología , Trombosis/prevención & control , Animales , Evaluación Preclínica de Medicamentos , Macaca fascicularis
19.
J Pers Assess ; 97(6): 597-604, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-26473457

RESUMEN

Theodore Millon was a brilliant man: erudite, thoughtful, confident, deliberate, and curious. He was an integrative thinker. It is widely known how these characteristics manifested themselves in his landmark work in the areas of personality theory, personality development, and personality assessment. What is likely less well known is that he displayed these same characteristics in and to the world of business; in particular, his relationships with those who published and distributed his assessment measures. This article traces those relationships. Various components are explored, ranging from product development to product marketing, from the protection of intellectual property to the development and execution of contracts, from deciding how and when to revise a test to ensuring that his legacy continues long into the future. Although the primary dynamic of these relationships was commercial, the reasons for their success were personal. Common goals, clarity of communication, persistence, respect, and trust allowed these relationships to develop, prosper, evolve, and endure.


Asunto(s)
Determinación de la Personalidad , Personalidad , Humanos
20.
Hum Mov Sci ; 43: 90-9, 2015 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-26241334

RESUMEN

Many children have difficulty producing movements well enough to improve in perceptuo-motor learning. We have developed a training method that supports active movement generation to allow improvement in a 3D tracing task requiring good compliance control. We previously tested 7-8 year old children who exhibited poor performance and performance differences before training. After training, performance was significantly improved and performance differences were eliminated. According to the Dynamic Systems Theory of development, appropriate support can enable younger children to acquire the ability to perform like older children. In the present study, we compared 7-8 and 10-12 year old school children and predicted that younger children would show reduced performance that was nonetheless amenable to training. Indeed, the pre-training performance of the 7-8 year olds was worse than that of the 10-12 year olds, but post-training performance was equally good for both groups. This was similar to previous results found using this training method for children with DCD and age-matched typically developing children. We also found in a previous study of 7-8 year old school children that training in the 3D tracing task transferred to a 2D drawing task. We now found similar transfer for the 10-12 year olds.


Asunto(s)
Desarrollo Infantil , Reconocimiento Visual de Modelos , Práctica Psicológica , Desempeño Psicomotor , Factores de Edad , Fenómenos Biomecánicos , Niño , Femenino , Humanos , Masculino , Pruebas Neuropsicológicas , Transferencia de Experiencia en Psicología
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