Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 27
Filtrar
Más filtros

Banco de datos
País/Región como asunto
Tipo del documento
Intervalo de año de publicación
1.
JAMA ; 330(4): 328-339, 2023 07 25.
Artículo en Inglés | MEDLINE | ID: mdl-37428480

RESUMEN

Importance: Immune dysregulation contributes to poorer outcomes in COVID-19. Objective: To investigate whether abatacept, cenicriviroc, or infliximab provides benefit when added to standard care for COVID-19 pneumonia. Design, Setting, and Participants: Randomized, double-masked, placebo-controlled clinical trial using a master protocol to investigate immunomodulators added to standard care for treatment of participants hospitalized with COVID-19 pneumonia. The results of 3 substudies are reported from 95 hospitals at 85 clinical research sites in the US and Latin America. Hospitalized patients 18 years or older with confirmed SARS-CoV-2 infection within 14 days and evidence of pulmonary involvement underwent randomization between October 2020 and December 2021. Interventions: Single infusion of abatacept (10 mg/kg; maximum dose, 1000 mg) or infliximab (5 mg/kg) or a 28-day oral course of cenicriviroc (300-mg loading dose followed by 150 mg twice per day). Main Outcomes and Measures: The primary outcome was time to recovery by day 28 evaluated using an 8-point ordinal scale (higher scores indicate better health). Recovery was defined as the first day the participant scored at least 6 on the ordinal scale. Results: Of the 1971 participants randomized across the 3 substudies, the mean (SD) age was 54.8 (14.6) years and 1218 (61.8%) were men. The primary end point of time to recovery from COVID-19 pneumonia was not significantly different for abatacept (recovery rate ratio [RRR], 1.12 [95% CI, 0.98-1.28]; P = .09), cenicriviroc (RRR, 1.01 [95% CI, 0.86-1.18]; P = .94), or infliximab (RRR, 1.12 [95% CI, 0.99-1.28]; P = .08) compared with placebo. All-cause 28-day mortality was 11.0% for abatacept vs 15.1% for placebo (odds ratio [OR], 0.62 [95% CI, 0.41-0.94]), 13.8% for cenicriviroc vs 11.9% for placebo (OR, 1.18 [95% CI 0.72-1.94]), and 10.1% for infliximab vs 14.5% for placebo (OR, 0.59 [95% CI, 0.39-0.90]). Safety outcomes were comparable between active treatment and placebo, including secondary infections, in all 3 substudies. Conclusions and Relevance: Time to recovery from COVID-19 pneumonia among hospitalized participants was not significantly different for abatacept, cenicriviroc, or infliximab vs placebo. Trial Registration: ClinicalTrials.gov Identifier: NCT04593940.


Asunto(s)
COVID-19 , Masculino , Humanos , Adulto , Persona de Mediana Edad , Femenino , Abatacept , Infliximab , SARS-CoV-2 , Pandemias
2.
Med Teach ; 40(3): 227-230, 2018 03.
Artículo en Inglés | MEDLINE | ID: mdl-28845726

RESUMEN

BACKGROUND: Primary care physicians have become a fundamental aspect of teaching in modern medical school curricula worldwide with a significant proportion of undergraduate teaching taking place in primary care. There are calls for this to increase with more patient care occurring in the community but teaching capacity in primary care is a potential challenge. Medical schools, therefore, need strategies to be able to increase their primary care physician teaching workforce. METHODOLOGY: We asked all Heads of General Practice Teaching in UK medical schools to share their three top tips for recruiting and retaining GPs to teach undergraduate students. The majority (two-thirds) of medical schools responded and we have summarized the answers into the following twelve tips. RESULTS: Although the twelve tips are varied and comprehensive, including broad topics such as finances and training, one clear theme running through the majority of tips is good communication and relationships between education teams and GPs. CONCLUSIONS: The solutions to recruiting and retaining GPs to teach undergraduate medical students are clearly multifactorial and complex. We hope that by presenting suggestions from UK GP heads of teaching as these twelve tips provides some helpful, thought-provoking ideas and inspiration for both the UK and internationally.


Asunto(s)
Docentes Médicos , Médicos Generales , Lealtad del Personal , Selección de Personal/métodos , Enseñanza , Facultades de Medicina , Reino Unido
3.
J Clin Transl Sci ; 7(1): e249, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-38229890

RESUMEN

In 2016, the National Center for Advancing Translational Science launched the Trial Innovation Network (TIN) to address barriers to efficient and informative multicenter trials. The TIN provides a national platform, working in partnership with 60+ Clinical and Translational Science Award (CTSA) hubs across the country to support the design and conduct of successful multicenter trials. A dedicated Hub Liaison Team (HLT) was established within each CTSA to facilitate connection between the hubs and the newly launched Trial and Recruitment Innovation Centers. Each HLT serves as an expert intermediary, connecting CTSA Hub investigators with TIN support, and connecting TIN research teams with potential multicenter trial site investigators. The cross-consortium Liaison Team network was developed during the first TIN funding cycle, and it is now a mature national network at the cutting edge of team science in clinical and translational research. The CTSA-based HLT structures and the external network structure have been developed in collaborative and iterative ways, with methods for shared learning and continuous process improvement. In this paper, we review the structure, function, and development of the Liaison Team network, discuss lessons learned during the first TIN funding cycle, and outline a path toward further network maturity.

4.
JAMA Netw Open ; 6(10): e2336470, 2023 10 02.
Artículo en Inglés | MEDLINE | ID: mdl-37796498

RESUMEN

Importance: Multicenter clinical trials play a critical role in the translational processes that enable new treatments to reach all people and improve public health. However, conducting multicenter randomized clinical trials (mRCT) presents challenges. The Trial Innovation Network (TIN), established in 2016 to partner with the Clinical and Translational Science Award (CTSA) Consortium of academic medical institutions in the implementation of mRCTs, consists of 3 Trial Innovation Centers (TICs) and 1 Recruitment Innovation Center (RIC). This unique partnership has aimed to address critical roadblocks that impede the design and conduct of mRCTs, in expectation of accelerating the translation of novel interventions to clinical practice. The TIN's challenges and achievements are described in this article, along with examples of innovative resources and processes that may serve as useful models for other clinical trial networks providing operational and recruitment support. Observations: The TIN has successfully integrated more than 60 CTSA institution program hubs into a functional network for mRCT implementation and optimization. A unique support system for investigators has been created that includes the development and deployment of novel tools, operational and recruitment services, consultation models, and rapid communication pathways designed to reduce delays in trial start-up, enhance recruitment, improve engagement of diverse research participants and communities, and streamline processes that improve the quality, efficiency, and conduct of mRCTs. These resources and processes span the clinical trial spectrum and enable the TICs and RIC to serve as coordinating centers, data centers, and recruitment specialists to assist trials across the National Institutes of Health and other agencies. The TIN's impact has been demonstrated through its response to both historical operational challenges and emerging public health emergencies, including the national opioid public health crisis and the COVID-19 pandemic. Conclusions and Relevance: The TIN has worked to reduce barriers to implementing mRCTs and to improve mRCT processes and operations by providing needed clinical trial infrastructure and resources to CTSA investigators. These resources have been instrumental in more quickly and efficiently translating research discoveries into beneficial patient treatments.


Asunto(s)
Distinciones y Premios , COVID-19 , Estados Unidos , Humanos , Pandemias , Ciencia Traslacional Biomédica , Comunicación
5.
J Pain ; 23(3): 370-378, 2022 03.
Artículo en Inglés | MEDLINE | ID: mdl-34508905

RESUMEN

The Helping to End Addiction Long-term Initiative (NIH HEAL Initiative) is an aggressive trans-NIH effort to speed solutions to stem the national opioid public health crisis, including through improved pain management. Toward this end, the NIH HEAL Initiative launched a common data element (CDE) program to ensure that NIH-funded clinical pain research studies would collect data in a standardized way. NIH HEAL Initiative staff launched a process to determine which pain-related core domains should be assessed by every clinical pain study and what questionnaires are required to ensure that the data is collected uniformly. The process involved multiple literature reviews, and consultation with experts inside and outside of NIH and the investigators conducting studies funded by the initiative. Ultimately, 9 core pain domains, and questionnaires to measure them, were chosen for studies examining acute pain and chronic pain in adults and pediatric populations. These were augmented with dozens of study-specific supplemental questionnaires to enable uniform data collection methods of outcomes outside of the core domains. The selection of core domains will ensure that valuable clinical pain data generated by the initiative is standardized, useable for secondary data analysis, and useful for guiding future research, clinical practice decisions, and policymaking. PERSPECTIVE: The NIH HEAL Initiative launched a common data element program to ensure that NIH-funded clinical pain research studies would collect data in a standardized way. Nine core pain domains and questionnaires to measure them were chosen for studies examining acute pain and chronic pain in adults and pediatric populations.


Asunto(s)
Dolor Agudo , Dolor Crónico , Niño , Dolor Crónico/epidemiología , Dolor Crónico/terapia , Elementos de Datos Comunes , Humanos , Epidemia de Opioides , Manejo del Dolor/métodos
6.
medRxiv ; 2022 Sep 26.
Artículo en Inglés | MEDLINE | ID: mdl-36203544

RESUMEN

Background: We investigated whether abatacept, a selective costimulation modulator, provides additional benefit when added to standard-of-care for patients hospitalized with Covid-19. Methods: We conducted a master protocol to investigate immunomodulators for potential benefit treating patients hospitalized with Covid-19 and report results for abatacept. Intravenous abatacept (one-time dose 10 mg/kg, maximum dose 1000 mg) plus standard of care (SOC) was compared with shared placebo plus SOC. Primary outcome was time-to-recovery by day 28. Key secondary endpoints included 28-day mortality. Results: Between October 16, 2020 and December 31, 2021, a total of 1019 participants received study treatment (509 abatacept; 510 shared placebo), constituting the modified intention-to-treat cohort. Participants had a mean age 54.8 (SD 14.6) years, 60.5% were male, 44.2% Hispanic/Latino and 13.7% Black. No statistically significant difference for the primary endpoint of time-to-recovery was found with a recovery-rate-ratio of 1.14 (95% CI 1.00-1.29; p=0.057) compared with placebo. We observed a substantial improvement in 28-day all-cause mortality with abatacept versus placebo (11.0% vs. 15.1%; odds ratio [OR] 0.62 [95% CI 0.41- 0.94]), leading to 38% lower odds of dying. Improvement in mortality occurred for participants requiring oxygen/noninvasive ventilation at randomization. Subgroup analysis identified the strongest effect in those with baseline C-reactive protein >75mg/L. We found no statistically significant differences in adverse events, with safety composite index slightly favoring abatacept. Rates of secondary infections were similar (16.1% for abatacept; 14.3% for placebo). Conclusions: Addition of single-dose intravenous abatacept to standard-of-care demonstrated no statistically significant change in time-to-recovery, but improved 28-day mortality. Trial registration: ClinicalTrials.gov ( NCT04593940 ).

7.
medRxiv ; 2022 Sep 26.
Artículo en Inglés | MEDLINE | ID: mdl-36172138

RESUMEN

Background: Immune dysregulation contributes to poorer outcomes in severe Covid-19. Immunomodulators targeting various pathways have improved outcomes. We investigated whether infliximab provides benefit over standard of care. Methods: We conducted a master protocol investigating immunomodulators for potential benefit in treatment of participants hospitalized with Covid-19 pneumonia. We report results for infliximab (single dose infusion) versus shared placebo both with standard of care. Primary outcome was time to recovery by day 29 (28 days after randomization). Key secondary endpoints included 14-day clinical status and 28-day mortality. Results: A total of 1033 participants received study drug (517 infliximab, 516 placebo). Mean age was 54.8 years, 60.3% were male, 48.6% Hispanic or Latino, and 14% Black. No statistically significant difference in the primary endpoint was seen with infliximab compared with placebo (recovery rate ratio 1.13, 95% CI 0.99-1.29; p=0.063). Median (IQR) time to recovery was 8 days (7, 9) for infliximab and 9 days (8, 10) for placebo. Participants assigned to infliximab were more likely to have an improved clinical status at day 14 (OR 1.32, 95% CI 1.05-1.66). Twenty-eight-day mortality was 10.1% with infliximab versus 14.5% with placebo, with 41% lower odds of dying in those receiving infliximab (OR 0.59, 95% CI 0.39-0.90). No differences in risk of serious adverse events including secondary infections. Conclusions: Infliximab did not demonstrate statistically significant improvement in time to recovery. It was associated with improved 14-day clinical status and substantial reduction in 28- day mortality compared with standard of care. Trial registration: ClinicalTrials.gov ( NCT04593940 ).

9.
Med Sci Educ ; 31(6): 1941-1950, 2021 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-34692227

RESUMEN

Context: Medical education is committed to teaching patient centred communication and empathy. However, quantitative research suggests empathy scores tend to decline as students progress through medical school. In qualitative terms, there is a need to better understand how students and tutors view the practice and teaching of clinical empathy and the phenomenon of empathic erosion. Methods: Working within a constructivist paradigm, researchers thematically analysed the individual interview data from a purposive sample of 13 senior students and 9 tutors. Results: The four major themes were as follows: (1) 'the nature of empathy', including the concept of the innate empathy that students already possess at the beginning of medical school; (2) 'beyond the formal curriculum' and the central importance of role modelling; (3) 'the formal curriculum and the tick-box influence of assessments'; and (4) the 'durability of empathy', including ethical erosion and resilience. A garden model of empathy development is proposed - beginning with the innate seeds of empathy that students bring to medical school, the flowering of empathy is a fragile process, subject to both enablers and barriers in the formal, informal, and hidden curricula. Conclusion: This study provides insights into empathic erosion in medical school, including the problems of negative role modelling and the limitations of an assessment system that rewards 'tick-box' representations of empathy, rather than true acts of compassion. It also identifies factors that should enable the flowering of empathy, such as new pedagogical approaches to resilience and a role for the arts and humanities.

10.
Biol Blood Marrow Transplant ; 16(10): 1362-9, 2010 10.
Artículo en Inglés | MEDLINE | ID: mdl-20353829

RESUMEN

Although xerostomia is a commonly reported complaint in patients with chronic graft-versus-host disease (cGVHD), criteria for evaluating the prevalence and characteristics of salivary gland involvement have not been well defined in this patient population. Previous studies also have made no distinction between salivary and mucosal oral cGVHD. We systematically evaluated signs and symptoms of sicca in a large cohort of patients with cGVHD (n = 101) using instruments widely used to study Sjogren's syndrome. Xerostomia was reported in 60 (77%) patients reporting ocular and 52 (67%) patients reporting oral complaints [corrected]. The salivary flow rate was < or =0.2 mL/min in 27%, and < or =0.1 mL/min in 16%. Histopathological changes, consisting of mononuclear infiltration and/or fibrosis/atrophy, were present in all patients with salivary dysfunction. Importantly, there was no correlation of salivary and oral mucosal involvement in cGVHD. Patients with cGVHD-associated salivary gland involvement had diminished oral cavity-specific quality of life and lower body mass index. Salivary gland involvement is a common and clinically distinct manifestation of cGVHD. Formal evaluation of salivary function using standardized criteria is needed, and this could be incorporated as an outcome measure in clinical trials of cGVHD.


Asunto(s)
Enfermedad Injerto contra Huésped/patología , Glándulas Salivales/patología , Xerostomía/etiología , Adulto , Anciano , Biopsia , Enfermedad Crónica , Estudios Transversales , Femenino , Enfermedad Injerto contra Huésped/epidemiología , Neoplasias Hematológicas/cirugía , Trasplante de Células Madre Hematopoyéticas , Humanos , Aparato Lagrimal/patología , Masculino , Persona de Mediana Edad , Prevalencia , Glándulas Salivales Menores/patología , Salivación , Método Simple Ciego , Estomatitis/epidemiología , Estomatitis/etiología , Estomatitis/patología , Xeroftalmia/epidemiología , Xeroftalmia/etiología , Xeroftalmia/patología , Xerostomía/epidemiología , Xerostomía/patología , Adulto Joven
11.
Handb Exp Pharmacol ; (190): 403-18, 2009.
Artículo en Inglés | MEDLINE | ID: mdl-19096789

RESUMEN

Irradiation damage to salivary glands is a common iatrogenic consequence of treatment for head and neck cancers. The subsequent lack of saliva production leads to many functional and quality-of-life problems for affected patients and there is no effective conventional therapy. To address this problem, we developed an in vivo gene therapy strategy involving viral vector-mediated transfer of the aquaporin-1 cDNA to irradiation-damaged glands and successfully tested it in two pre-clinical models (irradiated rats and miniature pigs), as well as demonstrated its safety in a large toxicology and biodistribution study. Thereafter, a clinical research protocol was developed that has received approval from all required authorities in the United States. Patients are currently being enrolled in this study.


Asunto(s)
Acuaporina 1/biosíntesis , Técnicas de Transferencia de Gen , Terapia Genética/métodos , Traumatismos por Radiación/terapia , Glándulas Salivales/metabolismo , Xerostomía/terapia , Adenoviridae/genética , Animales , Acuaporina 1/genética , Línea Celular , Ensayos Clínicos como Asunto , Modelos Animales de Enfermedad , Técnicas de Transferencia de Gen/efectos adversos , Terapia Genética/efectos adversos , Vectores Genéticos , Humanos , Traumatismos por Radiación/etiología , Traumatismos por Radiación/genética , Traumatismos por Radiación/metabolismo , Radioterapia/efectos adversos , Proyectos de Investigación , Glándulas Salivales/efectos de la radiación , Xerostomía/etiología , Xerostomía/genética , Xerostomía/metabolismo
12.
BMJ Case Rep ; 12(11)2019 Nov 26.
Artículo en Inglés | MEDLINE | ID: mdl-31776152

RESUMEN

A 71-year-old female patient with alcohol-induced cirrhosis presented with symptoms of dyspnoea. Previous extensive investigations had detected no apparent cause. Platypnoea and orthodeoxia were observed. A bubble echocardiogram revealed significant intracardiac shunting and a diagnosis of hepatopulmonary syndrome was made. The patient was discharged on home oxygen and referred for liver transplantation.


Asunto(s)
Disnea/etiología , Síndrome Hepatopulmonar/complicaciones , Hipoxia/etiología , Anciano , Femenino , Síndrome Hepatopulmonar/diagnóstico , Humanos , Postura
13.
Exp Hematol ; 35(2): 184-92, 2007 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-17258067

RESUMEN

OBJECTIVE: Allogeneic hematopoietic stem cell transplantation (allo-HCT) is frequently complicated by severe infections and graft-vs-host disease (GVHD). Saliva contains many components of adaptive and innate immune response crucial for local host defenses. Changes in salivary constituents could reflect systemic processes such as immune reconstitution and development of GVHD that occur posttransplant. This study was an initial evaluation of salivary protein changes that occur after allo-HCT. PATIENTS AND METHODS: Serially collected saliva samples from 41 patients undergoing allo-HCT were evaluated. Changes in salivary proteome were initially examined by SELDI-TOF mass spectrometry. Individual protein changes were identified by 2-dimensional differential in-gel electrophoresis (2D-DIGE) with subsequent MS/MS sequencing and ELISA. RESULTS: Significant increases and decreases in multiple salivary proteins that lasted at least 2 months posttransplant were detected by SELDI-TOF mass spectrometry. Lactoferrin and secretory leukocyte protease inhibitor demonstrated elevations 1 month post-HCT that persisted at least 6 months. Secretory IgA (sIgA) levels were decreased 1 month posttransplant, with recovery at approximately 6 months. Levels of salivary beta(2)-microglobulin were elevated at 6 months and correlated with sIgA levels. CONCLUSION: Allo-HCT is associated with long-term changes in several salivary proteins important for innate immune responses. These results support further studies on the association of salivary proteins with posttransplant complications including infections and GVHD.


Asunto(s)
Trasplante de Células Madre Hematopoyéticas/efectos adversos , Proteoma/química , Saliva/química , Proteínas y Péptidos Salivales/análisis , Adulto , Electroforesis en Gel Bidimensional/métodos , Ensayo de Inmunoadsorción Enzimática , Femenino , Enfermedad Injerto contra Huésped/diagnóstico , Enfermedad Injerto contra Huésped/inmunología , Humanos , Inmunoglobulina A/análisis , Lactoferrina/análisis , Masculino , Análisis Multivariante , Inhibidor Secretorio de Peptidasas Leucocitarias/análisis , Espectrometría de Masa por Láser de Matriz Asistida de Ionización Desorción/métodos , Espectrometría de Masas en Tándem/métodos , Trasplante Homólogo , Microglobulina beta-2/sangre
14.
Biochim Biophys Acta ; 1758(8): 1071-7, 2006 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-16368071

RESUMEN

The treatment of most patients with head and neck cancer includes ionizing radiation (IR). Salivary glands in the IR field suffer significant and irreversible damage, leading to considerable morbidity. Previously, we reported that adenoviral (Ad)-mediated transfer of the human aquaporin-1 (hAQP1) cDNA to rat [C. Delporte, B.C. O'Connell, X. He, H.E. Lancaster, A.C. O'Connell, P. Agre, B.J. Baum, Increased fluid secretion after adenoviral-mediated transfer of the aquaporin-1 cDNA to irradiated rat salivary glands. Proc. Natl. Acad. Sci. U S A. 94 (1997) 3268-3273] and miniature pig [Z. Shan, J. Li, C. Zheng, X. Liu, Z. Fan, C. Zhang, C.M. Goldsmith, R.B. Wellner, B.J Baum, S. Wang. Increased fluid secretion after adenoviral-mediated transfer of the human aquaporin-1 cDNA to irradiated miniature pig parotid glands. Mol. Ther. 11 (2005) 444-451] salivary glands approximately 16 weeks following IR resulted in a dose-dependent increase in salivary flow to > or =80% control levels on day 3. A control Ad vector was without any significant effect on salivary flow. Additionally, after administration of Ad vectors to salivary glands, no significant lasting effects were observed in multiple measured clinical chemistry and hematology values. Taken together, the findings show that localized delivery of AdhAQP1 to IR-damaged salivary glands is useful in transiently increasing salivary secretion in both small and large animal models, without significant general adverse events. Based on these results, we are developing a clinical trial to test if the hAQP1 cDNA transfer strategy will be clinically effective in restoring salivary flow in patients with IR-induced parotid hypofunction.


Asunto(s)
Acuaporina 1/genética , ADN Complementario/genética , Terapia Genética , Neoplasias de Cabeza y Cuello/radioterapia , Traumatismos Experimentales por Radiación/terapia , Enfermedades de las Glándulas Salivales/terapia , Glándulas Salivales/efectos de la radiación , Animales , Acuaporina 1/metabolismo , Técnicas de Transferencia de Gen , Vectores Genéticos , Humanos , Glándula Parótida/fisiopatología , Glándula Parótida/efectos de la radiación , Ratas , Glándulas Salivales/fisiopatología , Porcinos , Porcinos Enanos
16.
Clin Cancer Res ; 10(5): 1565-73, 2004 Mar 01.
Artículo en Inglés | MEDLINE | ID: mdl-15014005

RESUMEN

PURPOSE: Nonselective cyclooxygenase (COX) inhibitors have been reported to decrease the frequency of upper aerodigestive cancers. Ketorolac tromethamine oral rinse has been shown to resolve another COX-dependent process, periodontal disease, without incurring gastrointestinal side effects. This trial evaluated if a topically delivered oral rinse containing ketorolac was as safe as and more effective than oral rinse alone in reducing the area of oral leukoplakia. EXPERIMENTAL DESIGN: 57 patients were randomized (2:1 ratio) in a double-blind, placebo-controlled study of ketorolac (10 ml of a 0.1% ketorolac rinse solution; n = 38) or placebo (10 ml of rinse solution; n = 19) given twice daily for 30 s over 90 days. Primary end point was evaluated visually obtaining bidimensional measurement of the size of leukoplakia lesion(s) at entry and at 90 days. Secondary end point was histological assessment of the leukoplakia as sampled by serial punch biopsy and independently reviewed by three pathologists. RESULTS: The patients included 67% males, 11% non-Caucasian, and 86% used tobacco with no significant differences between the two arms. Both rinses were well tolerated with good compliance, and there was no significant difference in adverse events (P = 0.27). Major response rate (complete response and partial response) was 30% for ketorolac and 32% for the placebo arm. There was no significant difference in change in histology between the two arms. CONCLUSION: Local delivery of a COX-containing oral rinse was well tolerated but produced no significant reduction in the extent of leukoplakia compared with the placebo. However, the favorable response rate to placebo arm remains unexplained and additional investigation of the tissue penetration with ketorolac is warranted.


Asunto(s)
Antiinflamatorios no Esteroideos/uso terapéutico , Inhibidores de la Ciclooxigenasa/uso terapéutico , Ketorolaco/uso terapéutico , Leucoplasia Bucal/tratamiento farmacológico , Neoplasias Orofaríngeas/tratamiento farmacológico , Antiinflamatorios no Esteroideos/administración & dosificación , Antiinflamatorios no Esteroideos/efectos adversos , Inhibidores de la Ciclooxigenasa/administración & dosificación , Inhibidores de la Ciclooxigenasa/efectos adversos , Método Doble Ciego , Femenino , Humanos , Ketorolaco/administración & dosificación , Ketorolaco/efectos adversos , Leucoplasia Bucal/patología , Masculino , Antisépticos Bucales , Neoplasias Orofaríngeas/patología , Placebos , Fumar/efectos adversos
17.
Dent Clin North Am ; 49(2): 309-26, 2005 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-15755407

RESUMEN

Salivary gland hypofunction and complaints of xerostomia are common in elderly patients, irrespective of their living situation. Medication use is frequently related to dry mouth symptoms and reductions in salivary flow rates. Patients with reduced salivary flow are at increased risk for caries, oral fungal infections, swallowing problems, and diminished or altered taste. Oral health care providers should institute aggressive preventive measures and recommend palliative care for patients with significant reduction in salivary gland function. The systemic agents pilocarpine and cevimeline may help selected patients. Selective use of fluoride-releasing restorative materials and conservative treatment plans are recommended for this patient group.


Asunto(s)
Xerostomía/tratamiento farmacológico , Anciano , Anciano de 80 o más Años , Cariostáticos/uso terapéutico , Fluoruros/uso terapéutico , Humanos , Pilocarpina/uso terapéutico , Polifarmacia , Quinuclidinas/uso terapéutico , Radioterapia/efectos adversos , Salivación/efectos de los fármacos , Síndrome de Sjögren/complicaciones , Tiofenos/uso terapéutico , Xerostomía/etiología , Xerostomía/prevención & control
18.
Dent Mater ; 18(2): 128-35, 2002 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-11755591

RESUMEN

OBJECTIVES: This study investigated the stability of compounds of dental sealant materials in a salivary matrix. METHODS: Various amounts of bisphenol A (BPA), bisphenol A dimethacrylate (BIS-DMA) or triethylene-glycol dimethacrylate (TEGDMA) were added to whole salivary samples, and stored at -70 degrees C or -20 degrees C for up to 4 months. In other experiments, four separate whole salivary or water samples with BIS-DMA (200 ng/ml) were incubated for 0, 1, 2, 4 or 24h at 37 degrees C. Levels of analytes were determined by capillary gas chromatography/mass spectrophotometry (GC/MS) and high-performance liquid chromatography (HPLC). RESULTS: BPA was stable under all tested conditions. Samples originally containing BIS-DMA had high levels of BPA and almost no BIS-DMA after 4 months at -20 degrees C. Salivary samples incubated at 37 degrees C originally containing only BIS-DMA (200 ng/ml) demonstrated rapid decreases of BIS-DMA and increases of BPA. By 24h, the mean BIS-DMA concentration fell to 21.8 (25) ng/ml, while BPA increased to 100 (48) ng/ml. Only slight decreases in BIS-DMA and no BPA were present in the water samples incubated at 37 degrees C. BPA, BIS-DMA, and TEGDMA were stable if salivary samples were stored at -70 degrees C. Acidification of salivary samples prevented the breakdown of BIS-DMA. SIGNIFICANCE: BIS-DMA is converted rapidly to BPA in the presence of whole saliva. This could account for the findings of BPA in clinical samples collected after the placement of certain sealant products. Decreasing salivary pH and temperature can slow this process and this method should be used for clinical studies of salivary BPA leached from restorative materials.


Asunto(s)
Resinas Compuestas/química , Metacrilatos/química , Fenoles/química , Selladores de Fosas y Fisuras/química , Polietilenglicoles/química , Ácidos Polimetacrílicos/química , Saliva/química , Ácidos/química , Amilasas/análisis , Análisis de Varianza , Compuestos de Bencidrilo , Cromatografía Líquida de Alta Presión , Frío , Resinas Compuestas/análisis , Cromatografía de Gases y Espectrometría de Masas , Humanos , Concentración de Iones de Hidrógeno , Ensayo de Materiales , Metacrilatos/análisis , Fenoles/análisis , Selladores de Fosas y Fisuras/análisis , Polietilenglicoles/análisis , Ácidos Polimetacrílicos/análisis , Saliva/enzimología , Estadística como Asunto , Temperatura , Factores de Tiempo
19.
Artículo en Inglés | MEDLINE | ID: mdl-12424452

RESUMEN

OBJECTIVE: Septicemia is a cause of death in hematopoietic stem cell transplant (HSCT) recipients. Extraction of teeth with advanced periodontitis has been advocated before HSCT to prevent septicemia in myeloablated hosts. The primary aim of the present study was to determine impact of chronic periodontitis, as measured by radiographic alveolar bone loss, on septicemia and transplant mortality. STUDY DESIGN: A retrospective design was used to study 77 subjects who received pretransplant dental evaluation, panoramic radiography, and full myeloablative allogeneic HSCT to treat hematologic malignancies. Radiographic crestal alveolar bone loss was measured with a Schei ruler on all teeth. Microorganisms isolated from positive blood cultures within the first 100 days after transplant were categorized as of likely origin from periodontal, oral, or any body sites. Spearman correlation and logistic regression analysis assessed associations between positive blood cultures, mean subject whole-mouth percent radiographic crestal alveolar bone loss, and 100-day survival. RESULTS: Radiographic crestal alveolar bone loss per study subject averaged 13% +/- 7%, with 18.2% exhibiting bone loss of 20% or greater. During the initial 100 days after transplant, 63.6% subjects yielded septicemia-associated positive blood cultures, with Staphylococcus epidermidis, Streptococcus mitis, Enterococcus faecalis, Streptococcus sanguis, Staphylococcus aureus, and Escherichia coli as the most common isolates recovered. No statistically significant associations were found between mean subject radiographic alveolar bone loss and septicemia of likely periodontal or oral origin. CONCLUSION: In this preliminary study, no relationship was found between radiographic periodontal status and septicemia or mortality within the initial 100 days after transplant. A larger-sized, prospective study is warranted to further delineate the risk of septicemia from periodontal and other oral diseases in immunocompromised patients.


Asunto(s)
Pérdida de Hueso Alveolar , Pérdida de Hueso Alveolar/complicaciones , Bacteriemia/etiología , Bacteriemia/microbiología , Atención Dental para Enfermos Crónicos , Periodontitis/complicaciones , Adulto , Pérdida de Hueso Alveolar/diagnóstico por imagen , Bacterias Aerobias/aislamiento & purificación , Bacterias Anaerobias/aislamiento & purificación , Técnicas de Tipificación Bacteriana , Trasplante de Médula Ósea/mortalidad , Distribución de Chi-Cuadrado , Enfermedad Crónica , Trasplante de Células Madre Hematopoyéticas/mortalidad , Humanos , Terapia de Inmunosupresión , Modelos Logísticos , Oportunidad Relativa , Radiografía , Estudios Retrospectivos , Factores de Riesgo , Estadísticas no Paramétricas
20.
J Dent Educ ; 66(5): 634-42, 2002 May.
Artículo en Inglés | MEDLINE | ID: mdl-12056768

RESUMEN

The Electronic Patient Record (EPR) or "computer-based medical record" is defined by the Patient Record Institute as "a repository for patient information with one health-care enterprise that is supported by digital computer input and integrated with other information sources." The information technology revolution coupled with everyday use of computers in clinical dentistry has created new demand for electronic patient records. Ultimately, the EPR should improve health care quality. The major short-term disadvantage is cost, including software, equipment, training, and personnel time involved in the associated business process re-engineering. An internal review committee with expertise in information technology and/or database management evaluated commercially available software in light of the unique needs of academic dental facilities. This paper discusses their deficiencies and suggests areas for improvement. The dental profession should develop a more common record with standard diagnostic codes and clinical outcome measures to make the EPR more useful for clinical research and improve the quality of care.


Asunto(s)
Clínicas Odontológicas , Registros Odontológicos , Sistemas de Registros Médicos Computarizados , Facultades de Odontología , Redes de Comunicación de Computadores , Seguridad Computacional , Sistemas de Computación/economía , Capacitación de Usuario de Computador , Confidencialidad , Costos y Análisis de Costo , Toma de Decisiones Asistida por Computador , Técnicas de Apoyo para la Decisión , Atención Odontológica , Clínicas Odontológicas/economía , Clínicas Odontológicas/organización & administración , Registros Odontológicos/economía , Investigación Dental , Control de Formularios y Registros , Humanos , Sistemas de Registros Médicos Computarizados/economía , Evaluación de Resultado en la Atención de Salud , Planificación de Atención al Paciente , Garantía de la Calidad de Atención de Salud , Calidad de la Atención de Salud , Sistemas de Información Radiológica , Facultades de Odontología/economía , Facultades de Odontología/organización & administración , Programas Informáticos/economía , Factores de Tiempo
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA