Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 52
Filtrar
Mais filtros

Base de dados
País/Região como assunto
Tipo de documento
Intervalo de ano de publicação
1.
Ophthalmology ; 126(12): 1695-1702, 2019 12.
Artigo em Inglês | MEDLINE | ID: mdl-31543350

RESUMO

PURPOSE: To investigate characteristics associated with visual and anatomic outcomes in branch and central retinal vein occlusion (BRVO and CRVO) patients treated with ranibizumab. DESIGN: Post hoc analysis of patients with BRVO and CRVO from 2 multicenter clinical trials who completed month 12 of the HORIZON extension trial. PARTICIPANTS: 205 patients with BRVO and 181 patients with CRVO who completed month 12 of the extension trial. METHODS: With the use of logistic regression, covariates with a P value < 0.20 from univariate analysis were included in multivariate models to identify independent factors associated with a given outcome (at P < 0.05), with preset variables of disease duration and original treatment assignment. MAIN OUTCOME MEASURES: Best-corrected visual acuity (BCVA) ≥20/40 (≥70 letters), gain ≥15 letters, and central subfield thickness (CST) ≤250 µm at HORIZON month 12. RESULTS: In patients with BRVO, good baseline BCVA (odds ratio [OR], 1.53; 95% confidence interval [CI], 1.30-1.79), male sex (OR, 2.48; 95% CI, 1.20-5.13), and normal hematocrit (low vs. normal, OR, 0.26; 95% CI, 0.12-0.59) predicted BCVA ≥20/40; high central foveal thickness (OR, 1.03; 95% CI, 1.01-1.04) and normal hematocrit (low vs. normal, OR, 0.31; 95% CI, 0.15-0.66) predicted BCVA improvement ≥15 letters; and extensive baseline subretinal fluid modestly predicted CST ≤250 µm (OR, 1.08; 95% CI, 1.00-1.16). In patients with CRVO, good baseline BCVA (OR, 1.59; 95% CI, 1.35-1.89), never smoking (OR, 2.80; 95% CI, 1.27-6.17), and young age (OR, 0.58; 95% CI, 0.41-0.82) predicted BCVA ≥20/40; never smoking (OR, 2.13; 95% CI, 1.03-4.39), young age (OR, 0.41; 95% CI, 0.28-0.59), poor baseline BCVA (OR, 0.82; 95% CI, 0.73-0.93), hypertension (OR, 4.47; 95% CI, 1.70-11.75), and low diastolic ocular perfusion pressure (OPP) throughout the study (OR, 0.39; 95% CI, 0.21-0.72) predicted BCVA improvement ≥15 letters; and young age (OR, 0.65; 95% CI, 0.47-0.90), lower mean hematocrit (low vs. normal, OR, 2.81; 95% CI, 1.06-7.49), high systolic OPP throughout the study (OR, 1.61; 95% CI, 1.14-2.27), large areas of central hemorrhage (OR, 1.44; 95% CI, 1.04-2.00), and no subretinal fluid (OR, 2.15; 95% CI, 1.06-4.40) predicted CST ≤250 µm. CONCLUSIONS: There are substantial differences in good outcome factors in CRVO versus BRVO, suggesting differences in pathophysiology. Young age, never smoking, hemodilution, and hypertension/high systolic perfusion pressure are more beneficial in CRVO, suggesting that avoidance of sluggish blood flow and maintenance of perfusion may be particularly important in CRVO.


Assuntos
Inibidores da Angiogênese/uso terapêutico , Ranibizumab/uso terapêutico , Oclusão da Veia Retiniana/tratamento farmacológico , Idoso , Feminino , Angiofluoresceinografia , Seguimentos , Humanos , Injeções Intravítreas , Masculino , Pessoa de Meia-Idade , Razão de Chances , Estudos Prospectivos , Oclusão da Veia Retiniana/fisiopatologia , Líquido Sub-Retiniano , Tomografia de Coerência Óptica , Resultado do Tratamento , Fator A de Crescimento do Endotélio Vascular/antagonistas & inibidores , Acuidade Visual/fisiologia
2.
Med Ref Serv Q ; 38(1): 87-96, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-30942680

RESUMO

The primary goal of this project is to understand how each National Cancer Institute-designated cancer center library, and all libraries that support cancer research, function within their institutions. Through an in-depth survey focused on three major areas (staff, content and tools procurement, and user services), the research team hopes to determine how a cancer-centric library can be successful in supporting quality patient care, research excellence, and education. Additionally, the survey will examine the necessary minimum staffing levels for librarians and information professionals based on organizational size and degree of research focus. The survey will seek out the new skills librarians will need to deliver optimal services. The survey will also explore how content libraries purchase reflects and maps to constituents' current medical and research activities. Libraries within a research intense environment have a responsibility to align with researchers and health care professionals to provide resources and services that support their workflows. Cancer libraries need to be attuned to their institutions' missions, whether that includes excellent patient care, research endeavors, or cutting-edge educational programs. The information gathered from the survey will provide data for this research team to define the vision and standards of excellence for a cancer specialized research library.


Assuntos
Bases de Dados Bibliográficas/normas , Armazenamento e Recuperação da Informação/normas , Bibliotecas Médicas/normas , Desenvolvimento de Coleções em Bibliotecas/normas , Levantamentos de Bibliotecas/normas , Neoplasias , Bases de Dados Bibliográficas/tendências , Previsões , Humanos , Armazenamento e Recuperação da Informação/tendências , Bibliotecas Médicas/tendências , Desenvolvimento de Coleções em Bibliotecas/tendências , National Cancer Institute (U.S.) , Estados Unidos
4.
Cancer Immunol Immunother ; 67(2): 311-325, 2018 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-29052782

RESUMO

Malignant melanoma incidence has been increasing for over 30 years, and despite promising new therapies, metastatic disease remains difficult to treat. We describe preliminary results from a Phase I clinical trial (NCT01586403) of adoptive cell therapy in which three patients received autologous CD4+ and CD8+ T cells transduced with a lentivirus carrying a tyrosinase-specific TCR and a marker protein, truncated CD34 (CD34t). This unusual MHC Class I-restricted TCR produces functional responses in both CD4+ and CD8+ T cells. Parameters monitored on transduced T cells included activation (CD25, CD69), inhibitory (PD-1, TIM-3, CTLA-4), costimulatory (OX40), and memory (CCR7) markers. For the clinical trial, T cells were activated, transduced, selected for CD34t+ cells, then re-activated, and expanded in IL-2 and IL-15. After lymphodepleting chemotherapy, patients were given transduced T cells and IL-2, and were followed for clinical and biological responses. Transduced T cells were detected in the circulation of three treated patients for the duration of observation (42, 523, and 255 days). Patient 1 tolerated the infusion well but died from progressive disease after 6 weeks. Patient 2 had a partial response by RECIST criteria then progressed. After progressing, Patient 2 was given high-dose IL-2 and subsequently achieved complete remission, coinciding with the development of vitiligo. Patient 3 had a mixed response that did not meet RECIST criteria for a clinical response and developed vitiligo. In two of these three patients, adoptive transfer of tyrosinase-reactive TCR-transduced T cells into metastatic melanoma patients had clinical and/or biological activity without serious adverse events.


Assuntos
Antígenos de Neoplasias/imunologia , Melanoma/terapia , Receptores de Antígenos de Linfócitos T/imunologia , Neoplasias Cutâneas/terapia , Subpopulações de Linfócitos T/transplante , Adulto , Idoso , Humanos , Masculino , Melanoma/imunologia , Melanoma/patologia , Pessoa de Meia-Idade , Metástase Neoplásica , Prognóstico , Neoplasias Cutâneas/imunologia , Neoplasias Cutâneas/secundário , Subpopulações de Linfócitos T/imunologia , Transplante Autólogo
5.
Dev Med Child Neurol ; 56(4): 346-53, 2014 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-24117048

RESUMO

AIM: Sex chromosome aneuploidies increase the risk of spoken or written language disorders but individuals with specific language impairment (SLI) or dyslexia do not routinely undergo cytogenetic analysis. We assess the frequency of sex chromosome aneuploidies in individuals with language impairment or dyslexia. METHOD: Genome-wide single nucleotide polymorphism genotyping was performed in three sample sets: a clinical cohort of individuals with speech and language deficits (87 probands: 61 males, 26 females; age range 4 to 23 years), a replication cohort of individuals with SLI, from both clinical and epidemiological samples (209 probands: 139 males, 70 females; age range 4 to 17 years), and a set of individuals with dyslexia (314 probands: 224 males, 90 females; age range 7 to 18 years). RESULTS: In the clinical language-impaired cohort, three abnormal karyotypic results were identified in probands (proband yield 3.4%). In the SLI replication cohort, six abnormalities were identified providing a consistent proband yield (2.9%). In the sample of individuals with dyslexia, two sex chromosome aneuploidies were found giving a lower proband yield of 0.6%. In total, two XYY, four XXY (Klinefelter syndrome), three XXX, one XO (Turner syndrome), and one unresolved karyotype were identified. INTERPRETATION: The frequency of sex chromosome aneuploidies within each of the three cohorts was increased over the expected population frequency (approximately 0.25%) suggesting that genetic testing may prove worthwhile for individuals with language and literacy problems and normal non-verbal IQ. Early detection of these aneuploidies can provide information and direct the appropriate management for individuals.


Assuntos
Aneuploidia , Dislexia/epidemiologia , Dislexia/genética , Transtornos do Desenvolvimento da Linguagem/epidemiologia , Transtornos do Desenvolvimento da Linguagem/genética , Cromossomos Sexuais , Adolescente , Criança , Pré-Escolar , Estudos de Coortes , Feminino , Genótipo , Humanos , Cariotipagem , Masculino , Idade Paterna , Polimorfismo de Nucleotídeo Único , Prevalência , Adulto Jovem
6.
Am J Hum Genet ; 85(2): 264-72, 2009 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-19646677

RESUMO

Specific language impairment (SLI) is a common developmental disorder characterized by difficulties in language acquisition despite otherwise normal development and in the absence of any obvious explanatory factors. We performed a high-density screen of SLI1, a region of chromosome 16q that shows highly significant and consistent linkage to nonword repetition, a measure of phonological short-term memory that is commonly impaired in SLI. Using two independent language-impaired samples, one family-based (211 families) and another selected from a population cohort on the basis of extreme language measures (490 cases), we detected association to two genes in the SLI1 region: that encoding c-maf-inducing protein (CMIP, minP = 5.5 x 10(-7) at rs6564903) and that encoding calcium-transporting ATPase, type2C, member2 (ATP2C2, minP = 2.0 x 10(-5) at rs11860694). Regression modeling indicated that each of these loci exerts an independent effect upon nonword repetition ability. Despite the consistent findings in language-impaired samples, investigation in a large unselected cohort (n = 3612) did not detect association. We therefore propose that variants in CMIP and ATP2C2 act to modulate phonological short-term memory primarily in the context of language impairment. As such, this investigation supports the hypothesis that some causes of language impairment are distinct from factors that influence normal language variation. This work therefore implicates CMIP and ATP2C2 in the etiology of SLI and provides molecular evidence for the importance of phonological short-term memory in language acquisition.


Assuntos
ATPases Transportadoras de Cálcio/genética , Proteínas de Transporte/genética , Transtornos da Linguagem/genética , Memória de Curto Prazo , Proteínas Proto-Oncogênicas c-maf/genética , Proteínas Adaptadoras de Transdução de Sinal , Cromossomos Humanos Par 16 , Estudos de Coortes , Ligação Genética , Testes Genéticos , Humanos , Idioma , Transtornos da Linguagem/diagnóstico , Fonética
7.
Gastroenterology ; 141(5): 1605-11, 2011 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-21820389

RESUMO

BACKGROUND & AIMS: Dental erosion is a complication of gastroesophageal reflux (GER) in adults; in children, it is not clear if GER has a role in dental pathologic conditions. Dietary intake, oral hygiene, high bacterial load, and decreased salivary flow might contribute independently to GER development or dental erosion, but their potential involvement in dental erosion from GER is not understood. We investigated the prevalence of dental erosion among children with and without GER symptoms, and whether salivary flow rate or bacterial load contribute to location-specific dental erosion. METHODS: We performed a cross-sectional study of 59 children (ages, 9-17 y) with symptoms of GER and 20 asymptomatic children (controls); all completed a questionnaire on dietary exposure. Permanent teeth were examined for erosion into dentin, erosion locations, and affected surfaces. The dentist was not aware of GER status, and the gastroenterologist was not aware of dental status. Stimulated salivary flow was measured and salivary bacterial load was calculated for total bacteria, Streptococcus mutans, and Lactobacilli. RESULTS: Controlling for age, dietary intake, and oral hygiene, there was no association between GER symptoms and dental erosion by tooth location or affected surface. Salivary flow did not correlate with GER symptoms or erosion. Erosion location and surface were independent of total bacteria and levels of Streptococcus mutans and Lactobacilli. CONCLUSIONS: Location-specific dental erosion is not associated with GER, salivary flow, or bacterial load. Prospective studies are required to determine the pathogenesis of GER-associated dental erosion and the relationship between dental caries to GER and dental erosion.


Assuntos
Refluxo Gastroesofágico/complicações , Erosão Dentária/epidemiologia , Adolescente , Estudos de Casos e Controles , Criança , Estudos Transversais , Feminino , Humanos , Lactobacillus/isolamento & purificação , Masculino , Higiene Bucal , Prevalência , Fatores de Risco , Saliva/microbiologia , Saliva/fisiologia , Streptococcus mutans/isolamento & purificação
8.
Horm Behav ; 61(1): 67-75, 2012 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-22057031

RESUMO

Humans self-administer anabolic androgenic steroids (AAS) at superphysiological doses for the purpose of building muscle mass and enhancing physique whereas considerably lower doses of AAS are prescribed in the clinic to treat a variety of disorders. A number of studies have demonstrated that individual AAS influence aggressive behavior in rats and mice, but few studies have examined the aggression-enhancing effects of combinations of AAS. Using the resident-intruder paradigm, Experiment 1 determined whether a cocktail of commonly abused AAS increased aggressive behavior in gonadally-intact male C57BL/6J mice and examined whether the androgen receptor (AR) was involved. Mice given either AAS cocktail or the cocktail and the AR antagonist, flutamide, for 6 weeks were subject to three weekly tests in which the percentage of mice that fought, the latency to initiate an aggressive event and the number of aggressive events per 5-min-fight session were recorded. In C57BL/6J mice, 6 weeks of AAS administration increased the likelihood of fighting, however, within the subset of mice that engaged in aggression, AAS did not specifically modulate the latency to fight or the number of aggressive events per fight. In addition, co-administration of flutamide only slightly altered the likelihood that mice given AAS will initiate a fight. Experiment 2 examined the aggression-promoting effects of AAS in gonadally-intact adult testicular feminization mutant (Tfm) mice, which are deficient in functional ARs. Overall, fewer Tfm mice compared to C57BL/6J mice fought in both drug conditions (vehicle or AAS). Taken together, these data suggest that given the presence of AR during development, AAS enhance adult male aggression in C57BL/6J mice through AR-independent and AR-dependent pathways. In contrast, in adult Tfm mice, the likelihood of AAS-enhanced aggression in adulthood is significantly reduced.


Assuntos
Agressão/efeitos dos fármacos , Anabolizantes/farmacologia , Síndrome de Resistência a Andrógenos/psicologia , Receptores Androgênicos/fisiologia , Antagonistas de Receptores de Andrógenos/farmacologia , Síndrome de Resistência a Andrógenos/tratamento farmacológico , Animais , Feminino , Flutamida/farmacologia , Masculino , Camundongos , Camundongos Endogâmicos C57BL
9.
J Pediatr Gastroenterol Nutr ; 55(4): 425-8, 2012 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-22437468

RESUMO

BACKGROUND: Ulcerative colitis in children can have a negative effect on quality of life (QOL). METHODS: We included 16 of 31 patients who underwent colectomy for ulcerative colitis before 20 years of age between 1980 and 2005 at University of California in San Francisco Benioff Children's Hospital. A disease-specific QOL questionnaire (Inflammatory Bowel Disease Questionnaire-32), validated for adults, was used to determine QOL and an additional questionnaire addressing bowel function and reproductive health in long-term follow-up of these patients. RESULTS: Median age at the time of survey was 20.3 years (17.9-25.3), and time postcolectomy was 6.9 years (4.8-9.0). Mean total score was 159.7 ± 43.3 (58-210). Two patients (12.5%) had scores of ≥ 200, 12 (75.0%) had 101 to 199, and 2 (12.5%) had ≤ 100. Patients ages 18 years or younger at the time of survey showed higher QOL, particularly in emotional health (P=0.020), social function (P=0.014), and overall QOL (P=0.009). Social function scored highest of all of the systems (median 7; interquartile range 4-7). Patients with scores ≤ 100 had repeated episodes of pouchitis (16-30) compared with the other 14 patients (0-3). Children who were diagnosed ages 12 years or younger tended to have higher QOL (p=0.072). Years postcolectomy did not correlate to QOL. Eleven patients were sexually active. Two males had feelings of impotence and decreased libido, and 6 females experienced dyspareunia. Three women tried unsuccessfully to conceive after colectomy. One woman became pregnant 4 times, each leading to miscarriage. CONCLUSIONS: Younger age at time of colectomy, diagnosis, and survey show higher QOL. Highest satisfaction was found in ability to attend school, work, and social engagements. Pouchitis continued to be an issue for a small number of the patients, with 2 patients having recurring episodes that severely affected QOL. Patients reported decreased sexual activity and fertility at the time of survey due to colectomy, especially for females.


Assuntos
Atividades Cotidianas , Colectomia/efeitos adversos , Colite Ulcerativa/cirurgia , Relações Interpessoais , Complicações Pós-Operatórias , Qualidade de Vida , Saúde Reprodutiva , Aborto Espontâneo/etiologia , Adolescente , Adulto , Fatores Etários , Criança , Colite Ulcerativa/complicações , Colite Ulcerativa/psicologia , Dispareunia/etiologia , Disfunção Erétil/etiologia , Feminino , Fertilidade , Fertilização , Humanos , Incidência , Libido , Masculino , Saúde Mental , Pouchite/etiologia , Gravidez , Fatores Sexuais , Comportamento Sexual , Inquéritos e Questionários , Adulto Jovem
10.
J Clin Sleep Med ; 18(8): 1921-1931, 2022 08 01.
Artigo em Inglês | MEDLINE | ID: mdl-35499142

RESUMO

STUDY OBJECTIVES: To assess parental experience of their child's obstructive sleep apnea (OSA) detection process and inform the development of interventions and health communication strategies to improve OSA detection. METHODS: Semistructured interviews were conducted with 30 parents of children (ages 3-14) who snored and were referred for an overnight polysomnogram (PSG). Parents (60.0% Black race, 93.3% mothers) described how their child was referred for PSG and their perceptions and feelings throughout the detection process. Parents also completed an OSA knowledge measure. Interview data were analyzed using a descriptive approach and thematic analysis was conducted using the NVivo 12 software system. RESULTS: Twenty-one themes were identified across 5 categories (first steps; PSG facilitators and barriers; health information; health care experiences; parent experiences). Respondents experienced multiple pathways to OSA detection, with more than half of referrals initiated by parental concerns (vs. screening efforts). Parents reported a willingness to take any necessary steps to help their child. Both barriers and facilitators to completing a PSG were described. Parents observed both nighttime and daytime symptoms related to OSA in their child but often did not connect the symptoms to each other until later in the process. Participants had varying degrees of OSA knowledge, with a mean knowledge score of 56% correct (range 10%-90% correct). CONCLUSIONS: Parental experiences highlight aspects of the health care system that are both effective and ineffective in detecting children with OSA. Implications include a need for strategies to promote timely detection and to provide parents with accurate information about pediatric OSA. CITATION: Honaker SM, Gopalkrishnan A, Brann M, Wiehe S, Clark AA, Chung A. "It made all the difference": a qualitative study of parental experiences ith pediatric obstructive sleep apnea detection. J Clin Sleep Med. 2022;18(8):1921-1931.


Assuntos
Apneia Obstrutiva do Sono , Adolescente , Criança , Pré-Escolar , Feminino , Humanos , Mães , Pais , Polissonografia , Pesquisa Qualitativa , Apneia Obstrutiva do Sono/diagnóstico
11.
Artigo em Inglês | MEDLINE | ID: mdl-33573031

RESUMO

International research evidence has firmly established a high prevalence of language disorder in young offender populations. Less is known about young offenders' perspectives on their own language abilities. The study recruited an opportunity sample of 10 young men in custody at a Scottish youth offending institution who had recent experience of segregation. This mixed-methods study investigated participants' views on their language and communication abilities to inform future support and intervention, and formal language assessment was also administered to investigate indicative prevalence of language disorder within the sample. It focused on their communication with professionals and peers in justice, education and welfare settings. Results of standardised language assessment indicated the presence of language disorder in 44% (n = 4) of the sample (n = 9). Thematic analysis of interview data led to formulation of three themes: Valuing Communication, Literacy and Learning; Exerting Control; and Seeking Support. The first theme is discussed with reference to Bronfenbrenner's Bioecological Model. Participants offered reflective and rich views on their lived experience. They provided perspectives on features of successful interaction with peers and authority figures, importance of effective communication and the difficulties they encountered. This study argues for additional communication support for young people in the justice system.


Assuntos
Criminosos , Delinquência Juvenil , Transtornos da Linguagem , Adolescente , Humanos , Idioma , Testes de Linguagem , Masculino
12.
Appl Clin Inform ; 12(1): 90-99, 2021 01.
Artigo em Inglês | MEDLINE | ID: mdl-33598905

RESUMO

BACKGROUND: Sudden unexpected death in epilepsy (SUDEP) is a rare but fatal risk that patients, parents, and professional societies clearly recommend discussing with patients and families. However, this conversation does not routinely happen. OBJECTIVES: This pilot study aimed to demonstrate whether computerized decision support could increase patient communication about SUDEP. METHODS: A prospective before-and-after study of the effect of computerized decision support on delivery of SUDEP counseling. The intervention was a screening, alerting, education, and follow-up SUDEP module for an existing computerized decision support system (the Child Health Improvement through Computer Automation [CHICA]) in five urban pediatric primary care clinics. Families of children with epilepsy were contacted by telephone before and after implementation to assess if the clinician discussed SUDEP at their respective encounters. RESULTS: The CHICA-SUDEP module screened 7,154 children age 0 to 21 years for seizures over 7 months; 108 (1.5%) reported epilepsy. We interviewed 101 families after primary care encounters (75 before and 26 after implementation) over 9 months. After starting CHICA-SUDEP, the number of caregivers who reported discussing SUDEP with their child's clinician more than doubled from 21% (16/75) to 46% (12/26; p = 0.03), and when the parent recalled who brought up the topic, 80% of the time it was the clinician. The differences between timing and sampling methodologies of before and after intervention cohorts could have led to potential sampling and recall bias. CONCLUSION: Clinician-family discussions about SUDEP significantly increased in pediatric primary care clinics after introducing a systematic, computerized screening and decision support module. These tools demonstrate potential for increasing patient-centered education about SUDEP, as well as incorporating other guideline-recommended algorithms into primary and subspecialty cares. CLINICAL TRIAL REGISTRATION: clinicaltrials.gov, NCT03502759.


Assuntos
Sistemas de Apoio a Decisões Clínicas , Morte Súbita Inesperada na Epilepsia , Adolescente , Criança , Pré-Escolar , Comunicação , Humanos , Lactente , Recém-Nascido , Assistência Centrada no Paciente , Projetos Piloto , Estudos Prospectivos , Fatores de Risco , Adulto Jovem
13.
Br J Haematol ; 149(4): 537-49, 2010 May.
Artigo em Inglês | MEDLINE | ID: mdl-20331454

RESUMO

This study investigated the cytotoxicity and mechanism of action of AS703026, a novel, selective, orally bioavailable MEK1/2 inhibitor, in human multiple myeloma (MM). AS703026 inhibited growth and survival of MM cells and cytokine-induced osteoclast differentiation more potently (9- to 10-fold) than AZD6244. Inhibition of proliferation induced by AS703026 was mediated by G0-G1 cell cycle arrest and was accompanied by reduction of MAF oncogene expression. AS703026 further induced apoptosis via caspase 3 and Poly ADP ribose polymerase (PARP) cleavage in MM cells, both in the presence or absence of bone marrow stromal cells (BMSCs). Importantly, AS703026 sensitized MM cells to a broad spectrum of conventional (dexamethasone, melphalan), novel or emerging (lenalidomide, perifosine, bortezomib, rapamycin) anti-MM therapies. Significant tumour growth reduction in AS703026- vs. vehicle-treated mice bearing H929 MM xenograft tumours correlated with downregulated pERK1/2, induced PARP cleavage, and decreased microvessels in vivo. Moreover, AS703026 (<200 nmol/l) was cytotoxic against the majority of tumour cells tested from patients with relapsed and refractory MM (84%), regardless of mutational status of RAS and BRAF genes. Importantly, BMSC-induced viability of MM patient cells was similarly blocked within the same dose range. Our results therefore support clinical evaluation of AS703026, alone or in combination with other anti-MM agents, to improve patient outcome.


Assuntos
Antineoplásicos/farmacologia , Sistema de Sinalização das MAP Quinases/efeitos dos fármacos , Mieloma Múltiplo/patologia , Niacinamida/análogos & derivados , Inibidores de Proteínas Quinases/farmacologia , Animais , Protocolos de Quimioterapia Combinada Antineoplásica/farmacologia , Apoptose/efeitos dos fármacos , Morte Celular/efeitos dos fármacos , Relação Dose-Resposta a Droga , Humanos , MAP Quinase Quinase 1/antagonistas & inibidores , MAP Quinase Quinase 2/antagonistas & inibidores , Camundongos , Camundongos SCID , Mieloma Múltiplo/tratamento farmacológico , Niacinamida/farmacologia , Niacinamida/uso terapêutico , Inibidores de Proteínas Quinases/uso terapêutico , Células Tumorais Cultivadas , Ensaios Antitumorais Modelo de Xenoenxerto
14.
Aust J Rural Health ; 18(3): 96-101, 2010 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-20579019

RESUMO

OBJECTIVE: This paper proposes that there is value in international comparison of rural and remote health-care service delivery models because of practical reasons - to find ideas, models and lessons to address 'local' delivery challenges; and for theoretical reasons - to derive a conceptual framework for international comparison. METHODS: Literature review and commentary. FINDINGS: There are significant challenges to international comparative research that have been highlighted generically; for example, equivalence of terminology, datasets and indicators. Context supremacy has been raised as a reason why models and research findings might not be transferable. This paper proposes that there is insufficient knowledge about how rural contexts in relation to health service delivery are similar or different internationally. Investigating contexts in different countries and identifying the dimensions on which service delivery might differ is an important stimulus for study. The paper suggests, for discussion, dimensions on which rural service delivery might differ between countries and regions, including physical geographical factors, social interaction with rurality, policies of service provision and the politics and operation of health care. CONCLUSIONS: The paper asks whether, given the need to develop models suitable for rural areas and for theory on rural health to extend, international comparative research is an imperative or an indulgence.


Assuntos
Atenção à Saúde/organização & administração , Política de Saúde , Pesquisa sobre Serviços de Saúde , Área Carente de Assistência Médica , Serviços de Saúde Rural/organização & administração , Comparação Transcultural , Atenção à Saúde/métodos , Saúde Global , Humanos , Modelos Organizacionais
15.
Behav Neurosci ; 123(3): 539-46, 2009 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-19485560

RESUMO

Female rats exhibit a conditioned place preference (CPP) for a context paired with mating. The present experiment tested the hypothesis that the activation of the pelvic nerve mediates the reinforcing effects of mating for female rats. Rats underwent bilateral pelvic nerve or sham transection and then received paced mating, nonpaced mating, or the control treatment during a CPP procedure. Pelvic nerve transection did not affect the CPP for paced or nonpaced mating. In tests of paced mating behavior, contact-return latencies following intromissions were significantly shorter in rats with pelvic nerve transection than they were in rats with sham transections. These results show that the pathway conveying the reinforcing effects of mating stimulation does not depend on the integrity of the pelvic nerve, but that activation of the pelvic nerve contributes to the display of paced mating behavior.


Assuntos
Condicionamento Clássico/fisiologia , Pelve/inervação , Comportamento Sexual Animal/fisiologia , Comportamento Espacial/fisiologia , Análise de Variância , Animais , Feminino , Tamanho do Órgão , Traumatismos dos Nervos Periféricos , Distribuição Aleatória , Ratos , Ratos Long-Evans , Recompensa , Fatores de Tempo , Bexiga Urinária/patologia
16.
Horm Behav ; 55(1): 128-32, 2009 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-18848563

RESUMO

Female rats express a conditioned place preference (CPP) for a context paired with mating. During a mating encounter, the female rat is exposed to several different types of stimuli, including, but not limited to, vaginocervical stimulation and social contact. The present experiment tested the hypothesis that two components of the mating interaction, vaginocervical stimulation or social contact, each induce a CPP in female rats. During conditioning rats received nonpaced mating, artificial vaginocervical stimulation, social interaction or a control treatment. Rats expressed a CPP for the context paired with nonpaced mating or artificial vaginocervical stimulation whereas social interaction and the control treatment did not induce a CPP. The present findings highlight the important role that vaginocervical stimulation plays in the reinforcing effects of mating in female rats.


Assuntos
Colo do Útero/fisiologia , Condicionamento Psicológico/fisiologia , Copulação/fisiologia , Comportamento Espacial/fisiologia , Vagina/fisiologia , Análise de Variância , Animais , Feminino , Masculino , Estimulação Física , Ratos , Ratos Long-Evans , Comportamento Social
17.
Physiol Behav ; 96(2): 289-93, 2009 Feb 16.
Artigo em Inglês | MEDLINE | ID: mdl-18996134

RESUMO

Nitric oxide (NO) is the primary mediator of blood flow in female genital tissues and drugs that enhance the activity of nitric oxide, such as phosphodiesterase type-5 (PDE-5) inhibitors, increase vaginal blood flow in anesthetized rats. The goal of the present study was to test the effects of one PDE-5 inhibitor, zaprinast, on the display of sexual behaviors in gonadectomized, estrogen- and progesterone-treated female rats. Experiment 1 demonstrates that zaprinast alters paced mating behavior by lengthening the contact-return latency to ejaculation; there is a significant relationship between dose of zaprinast (range 1.5-6 mg/kg) and contact-return latency to ejaculation. Experiment 2 illustrates that zaprinast has no effect on preference for an intact male as measured in a No Contact partner preference test. Rats receiving zaprinast tend to exhibit reduced locomotor activity in both experiments. Collectively, these findings demonstrate that modulation of the NO-cGMP pathway using a PDE-5 inhibitor alters the display of paced mating behaviors in rats.


Assuntos
Inibidores de Fosfodiesterase/farmacologia , Purinonas/farmacologia , Comportamento Sexual Animal/efeitos dos fármacos , Animais , Estrogênios/farmacologia , Feminino , Masculino , Preferência de Acasalamento Animal/efeitos dos fármacos , Dose Máxima Tolerável , Ovariectomia/métodos , Progesterona/farmacologia , Progestinas/farmacologia , Ratos , Ratos Long-Evans , Tempo de Reação/efeitos dos fármacos , Fatores de Tempo
18.
J Pediatr Gastroenterol Nutr ; 48(1): 55-60, 2009 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-19172124

RESUMO

OBJECTIVES: We examined the use of complementary and alternative medicine (CAM) at 3 US pediatric medical centers, comparing a group of children with inflammatory bowel disease (IBD) with children presenting with chronic constipation. MATERIALS AND METHODS: Surveys were administered by postal mail and at pediatric IBD centers in San Francisco, Houston, and Atlanta from 2001 to 2003. A comparison group consisting of pediatric patients with chronic constipation also was surveyed. Data were analyzed by t tests and by exact tests of contingency tables. RESULTS: In all, 236 surveys were collected from the IBD group; 126 surveys were collected from the chronic constipation comparison group. CAM therapies were used by 50% in the IBD group and 23% in the chronic constipation group. The overall regional breakdown of CAM use in IBD revealed no differences, although the types of CAM therapy used varied by site. The most commonly used CAM therapies in the IBD group were spiritual interventions (25%) and nutritional supplements (25%). Positive predictors for CAM use in IBD include the patient's self-reported overall health, an increase in the number of side effects associated with allopathic medications, white ethnicity, and parental education beyond high school. CONCLUSIONS: This is the first US study to characterize CAM use in pediatric patients with IBD with another chronic gastrointestinal disorder. CAM use was twice as common with the IBD group compared with the chronic constipation group. Regional variations exist with the types of CAM therapy used. Practitioners should know that half of their pediatric patients with IBD may be using CAM in conjunction with or as an alternative to other treatments and that certain predictors can help identify those using CAM therapies.


Assuntos
Terapias Complementares/estatística & dados numéricos , Doenças Inflamatórias Intestinais/terapia , Adolescente , Adulto , Criança , Pré-Escolar , Doença Crônica , Constipação Intestinal/terapia , Suplementos Nutricionais , Humanos , Lactente , Preparações de Plantas/uso terapêutico , Terapias Espirituais , Inquéritos e Questionários
19.
Benefits Q ; 24(2): 23-8, 2008.
Artigo em Inglês | MEDLINE | ID: mdl-18590180

RESUMO

Businesses should focus on a proactive solution to rising health care costs, using integrated wellness programs that emphasize condition management and total health and well-being. If corporations wish to remain competitive, profitable and successful in attracting and retaining topnotch talent from all generations, they are going to have to start investing in and thinking creatively about wellness offerings. Not only do wellness programs have a proven track record of success in reducing health care costs, they also resonate loud and clear with modern-day employees who are determined to work for a company that understands their needs and is willing to make progress with the employee's best interests in mind.


Assuntos
Planos de Assistência de Saúde para Empregados , Promoção da Saúde/organização & administração , Controle de Custos , Promoção da Saúde/economia , Promoção da Saúde/métodos , Promoção da Saúde/estatística & dados numéricos , Humanos , Motivação , Estados Unidos
20.
Endocrinology ; 148(7): 3080-8, 2007 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-17332058

RESUMO

Considerable indirect evidence suggests that the type 2 deiodinase (D2) generates T3 from T4 for local use in specific tissues such as pituitary, brown fat, and brain, and studies with a D2-deficent mouse, the D2 knockout (D2KO) mouse, have shown this to be the case in pituitary and brown fat. The present study employs the D2KO mouse to determine the role of D2 in the developing brain. As expected, the T3 content in the neonatal D2KO brain was markedly reduced to a level comparable with that seen in the hypothyroid neonatal wild-type mouse. However, the mRNA levels of several T3-responsive genes were either unaffected or much less affected in the brain of the D2KO mouse than in that of the hypothyroid mouse, and compared with the hypothyroid mouse, the D2KO mouse exhibited a very mild neurological phenotype. The current view of thyroid hormone homeostasis in the brain dictates that the T3 present in neurons is generated mostly, if not exclusively, from T4 by the D2 in glial cells. This view is inadequate to explain the findings presented herein, and it is suggested that important compensatory mechanisms must be in play in the brain to minimize functional abnormalities in the absence of the D2.


Assuntos
Encéfalo/metabolismo , Homeostase/fisiologia , Iodeto Peroxidase/metabolismo , Hormônios Tireóideos/fisiologia , Tecido Adiposo Marrom/metabolismo , Animais , Animais Recém-Nascidos , Ansiedade/psicologia , Encéfalo/crescimento & desenvolvimento , Expressão Gênica , Iodeto Peroxidase/deficiência , Iodeto Peroxidase/genética , Aprendizagem em Labirinto , Glicoproteínas de Membrana/genética , Memória/fisiologia , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Knockout , Neurogranina/genética , Testes Neuropsicológicos , Hipófise/metabolismo , Proteínas Tirosina Quinases/genética , RNA Mensageiro/genética , RNA Mensageiro/metabolismo , Reação em Cadeia da Polimerase Via Transcriptase Reversa , Hormônios Tireóideos/sangue , Hormônios Tireóideos/metabolismo , Tiroxina/sangue , Tiroxina/metabolismo , Tiroxina/fisiologia , Fatores de Tempo , Tri-Iodotironina/sangue , Tri-Iodotironina/metabolismo , Tri-Iodotironina/fisiologia , Iodotironina Desiodinase Tipo II
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA