Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 196
Filtrar
1.
BMC Med Educ ; 24(1): 646, 2024 Jun 10.
Artigo em Inglês | MEDLINE | ID: mdl-38858656

RESUMO

BACKGROUND: Mentoring is vital to career development in academic medicine, and communication underlies all aspects of the mentoring relationship. Although training research mentors has been shown to be effective, few academic medicine faculties have received training in how to mentor. The investigators developed a novel intervention, the Mentor Communication Skills Training for Oncology Faculty ("Comskil Mentor Training") and examined feasibility and preliminary efficacy. METHODS: The study was a single arm pre-post intervention design. The intervention (Comskil Mentor Training) was offered in one virtual 3-hour session and included a didactic lecture with exemplary skill demonstration videos, facilitator-led small group role plays with trained actors, and evaluation. 19 faculty members from 12 departments participated in the training. RESULTS: All participants completed the training. Overall, the training was rated favorably, with more than 80% of participants indicating that they "agreed" or "strongly agreed" with training evaluation. From pre- to post-training, significant improvement was seen in participants' overall self-efficacy to communicate with mentees, as well as participants' overall use of communication skills and mentoring-specific language. CONCLUSIONS: Our findings support the feasibility and preliminary efficacy of a virtually delivered experiential mentor communication skills training program for multidisciplinary clinical and research faculty in oncology.


Assuntos
Comunicação , Docentes de Medicina , Estudos de Viabilidade , Tutoria , Mentores , Humanos , Masculino , Feminino , Oncologia/educação , Avaliação de Programas e Projetos de Saúde , Adulto
2.
J Cancer Educ ; 39(1): 12-17, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-37676422

RESUMO

Geriatric cancer patients and their caregivers have unique needs that make it difficult for their healthcare providers (HCPs) to effectively communicate with them. As ineffective communication can lead to negative health outcomes, it is important that oncology HCPs receive specialized training on communication with older adult patients and their caregivers. We conducted a small pilot study examining audio recordings of clinical encounters between HCPs and older adult cancer patients/caregivers and questionnaires completed by the patients and their caregivers before and after the HCPs participated in a geriatric communication skills training program. Eleven HCPs completed the 6-h Geriatric Comskil Training. Two clinic consultations with unique geriatric patients (n = 44) and their caregivers (n = 29) were recorded before and after training and coded for HCPs' use of communication skills. Patients and caregivers also completed surveys measuring their satisfaction with HCP communication and perceived empathy. Analysis of the audio recordings revealed that HCPs did not increase their use of communication skills after training. Although our sample was too small to detect statistical significance, measures of effect size showed trending improvements in patients' and caregivers' perceptions of HCPs' empathy and satisfaction with their communication after training. Our findings build on previous studies evaluating the feasibility and effectiveness of the Geriatric Comskil Training in real world setting and indicate that the training may have improved HCPs' communication with older adult patients and their caregivers even if their use of their observable communication skills did not change.


Assuntos
Cuidadores , Neoplasias , Humanos , Idoso , Cuidadores/educação , Projetos Piloto , Pessoal de Saúde/educação , Comunicação
3.
Ann Surg ; 277(3): e617-e623, 2023 03 01.
Artigo em Inglês | MEDLINE | ID: mdl-33938495

RESUMO

OBJECTIVE: To assess pain severity and interference with life in women after different types of breast cancer surgery and the demographic, treatment-related, and psychosocial variables associated with these pain outcomes. SUMMARY OF BACKGROUND DATA: Data are conflicting regarding pain outcomes and quality of life (QOL) among women who undergo different types of breast surgery. METHODS: Women with nonhereditary breast cancer completed the brief pain inventory before surgery and at 1, 6, 12, and 18 months postsurgery. We assessed associations between pain outcomes and CPM status and mastectomy status using multivariable repeated measures models. We assessed associations between pain outcome and QOL and decision satisfaction. RESULTS: Of 288 women (mean age 56 years, 58% non-Hispanic White), 50 had CPM, 75 had unilateral mastectomy, and 163 had BCS. Mean pain severity scores were higher at one (2.78 vs 1.9, P = 0.016) and 6 months (2.79 vs 1.96, P = 0.031) postsurgery in women who had CPM versus those who did not, but there was no difference at 12 and 18 months. Comparing mastectomy versus BCS, pain severity was higher at 1 and 12 months. There was a significant interaction between pain severity and time point for CPM ( P = 0.006), but not mastectomy status ( P = 0.069). Regardless of surgery type, Black women had higher pain severity ( P = 0.004) than White women. Higher pain interference was associated with lower QOL ( P < 0.001) and lower decision satisfaction ( P = 0.034). CONCLUSIONS: Providers should counsel women considering mastectomy about the potential for greater acute pain and its impact on overall well-being. Racial/ethnic disparities in pain exist and influence pain management in breast surgical patients.


Assuntos
Neoplasias da Mama , Humanos , Feminino , Pessoa de Meia-Idade , Estudos Prospectivos , Qualidade de Vida , Mastectomia , Dor
4.
Psychooncology ; 32(1): 47-57, 2023 01.
Artigo em Inglês | MEDLINE | ID: mdl-36045548

RESUMO

AIMS: To assess clinicians' self-reported knowledge of current policies in African oncology settings, of their personal communication practices around sharing bad news with patients, and to identify barriers to the sharing of serious news in these settings. METHODS: A cross-sectional study of cancer care providers in African oncology settings (N = 125) was conducted. Factor analysis was used to assess cross-cultural adaptation and uptake of an evidence-based protocol for disclosing bad news to patients with cancer and of providers' perceived barriers to disclosing bad news to patients with cancer. Analysis of Various (ANOVA) was used to assess strength of association with each dimension of these two measurement models by various categorical variables. RESULTS: Providers from Nigeria, Kenya, Ghana, and Rwanda represented 85% of survey respondents. Two independent, psychometrically reliable, multi-dimensional measurement models were derived to assess providers' personal communication practices and providers' perceived barriers to disclosing a cancer diagnosis. Forty percent (40%) of respondent nurses but only 20% of respondent physicians had had formal communications skills training. Approximately 20%-25% of respondent physicians and nurses reported having a consistent plan or strategy for communicating bad news to their cancer patients. CONCLUSIONS: Results show that effective communication about cancer diagnosis and prognosis requires an appreciation and clinical skill set that blends an understanding of cancer-related internalized stigmas harbored by patient and family, dilemmas posed by treatment affordability, and the need to navigate family wishes about cancer-related diagnoses in the context of African oncology settings. Findings underscore the need for culturally grounded communications research and program design.


Assuntos
Neoplasias , Revelação da Verdade , Humanos , Estudos Transversais , Oncologia/educação , Comunicação , Neoplasias/terapia , Relações Médico-Paciente
5.
Support Care Cancer ; 31(10): 566, 2023 Sep 08.
Artigo em Inglês | MEDLINE | ID: mdl-37682354

RESUMO

PURPOSE: The global incidence of cancer and available cancer-directed therapy options is increasing rapidly, presenting patients and clinicians with more complex treatment decisions than ever before. Despite the dissemination of evidence-based communication training tools and programs, clinicians cite barriers to employing effective communication in cancer care (e.g., discomfort of sharing serious news, concern about resource constraints to meet stated needs). We present two composite cases with significant communication challenges to guide clinicians through an application of evidence-based approaches to achieve quality communication. METHODS: Composite cases, communication skills blueprint, and visual conceptualization. RESULTS: High-stakes circumstances in each case are described, including end-of-life planning, advanced pediatric illness, strong emotions, and health inequities. Three overarching communication approaches are discussed: (1) content selection and delivery; (2) rapport development; and (3) empathic connection. The key takeaways following each case provide succinct summaries of challenges encountered and approaches used. A communication blueprint from the Memorial Sloan Kettering Cancer Center Communication Skills Training Program and Research Laboratory has been adapted and is comprised of strategies, skills, process tasks, and sample talking points. A visually concise tool - the Communication Blueprint Traffic Circle - illustrates these concepts and demonstrates the iterative, holistic, and agile considerations inherent to effective communication. CONCLUSION: Evidence-based communication is foundational to person-centeredness, associated with improved clinician and patient/caregiver outcomes, and can be integrated throughout routine oncology care. When used by clinicians, evidence-based communication can improve patient and caregiver experiences and assist in ensuring goal-concordant cancer care delivery.


Assuntos
Comunicação , Neoplasias , Humanos , Criança , Formação de Conceito , Morte , Emoções , Empatia , Neoplasias/terapia
6.
Palliat Med ; 37(4): 460-474, 2023 04.
Artigo em Inglês | MEDLINE | ID: mdl-36475950

RESUMO

BACKGROUND: Lesbian, gay, bisexual, transgender, and queer/questioning (LGBTQ+) individuals experience discrimination throughout the care continuum, including during serious illness and at end of life. High-quality palliative care requires that health professionals deliver individualized services that reflect the needs, experiences, and preferences of LGBTQ+ persons. AIM: To identify and appraise existing evidence related to the needs, experiences, and preferences for palliative and end of life care among LGBTQ+ individuals with serious illness. DESIGN: Data-based convergent synthesis design reported per the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. DATA SOURCES: PubMed, Embase, Cochrane CENTRAL, PsycINFO, CINAHL, and Scopus from January 1, 2010 to November 6, 2020. RESULTS: Of 4875 results captured, 69 articles underwent full-text review and 13 were retained for analysis. Most studies were from North America with trans individuals represented in 10 of 13 studies. Needs (n = 6) included increased social support, institutional safety, economic and legal supports, and advocacy to mitigate health barriers.Experiences (n = 12) were driven by fear and worry associated with discrimination/stigma,providers' hetero-/cisnormative assumptions, homophobia and transphobia, social isolation, and an undignified death. Preferences (n = 6) pertained to inclusion of chosen families in decision-making, disclosure of LGBTQ+ identity based on safety of the clinical environment, and a desire to maintain autonomy. CONCLUSIONS: The robustness of the science has improved regarding the needs, experiences, and preferences of trans individuals. Actionable, inclusive policies coupled with sustained and integrated cultural sensitivity training for health workers are mandatory. Interventional research is critical to enhance tailored palliative care for LGBTQ+ people and their chosen families.


Assuntos
Cuidados Paliativos na Terminalidade da Vida , Minorias Sexuais e de Gênero , Assistência Terminal , Feminino , Humanos , Comportamento Sexual , Cuidados Paliativos
7.
Proc Natl Acad Sci U S A ; 117(36): 22303-22310, 2020 09 08.
Artigo em Inglês | MEDLINE | ID: mdl-32817535

RESUMO

Penguins are the only extant family of flightless diving birds. They currently comprise at least 18 species, distributed from polar to tropical environments in the Southern Hemisphere. The history of their diversification and adaptation to these diverse environments remains controversial. We used 22 new genomes from 18 penguin species to reconstruct the order, timing, and location of their diversification, to track changes in their thermal niches through time, and to test for associated adaptation across the genome. Our results indicate that the penguin crown-group originated during the Miocene in New Zealand and Australia, not in Antarctica as previously thought, and that Aptenodytes is the sister group to all other extant penguin species. We show that lineage diversification in penguins was largely driven by changing climatic conditions and by the opening of the Drake Passage and associated intensification of the Antarctic Circumpolar Current (ACC). Penguin species have introgressed throughout much of their evolutionary history, following the direction of the ACC, which might have promoted dispersal and admixture. Changes in thermal niches were accompanied by adaptations in genes that govern thermoregulation and oxygen metabolism. Estimates of ancestral effective population sizes (Ne ) confirm that penguins are sensitive to climate shifts, as represented by three different demographic trajectories in deeper time, the most common (in 11 of 18 penguin species) being an increased Ne between 40 and 70 kya, followed by a precipitous decline during the Last Glacial Maximum. The latter effect is most likely a consequence of the overall decline in marine productivity following the last glaciation.


Assuntos
Evolução Molecular , Genoma/genética , Spheniscidae , Animais , Regiões Antárticas , Austrália , Mudança Climática , Ecossistema , Estudo de Associação Genômica Ampla , Nova Zelândia , Filogenia , Seleção Genética/genética , Spheniscidae/classificação , Spheniscidae/genética , Spheniscidae/fisiologia
8.
Death Stud ; : 1-11, 2023 Dec 20.
Artigo em Inglês | MEDLINE | ID: mdl-38117258

RESUMO

Caregiving in the South Asian context is often assumed by family automatically for the person with cancer (PWC). In this paper, we applied the disclosure decision-making model (DD-MM) to understand the motives behind cancer prognosis disclosure (or not) by caregivers to the PWC. Fifty caregivers participated in semi-structured interviews; and data were analyzed using Framework Approach. For the disclosing caregivers, some of the themes that emerged were consistent with the DD-MM framework while others were not. In particular, the theme "recipient assessment" was part of the DD-MM framework, while others such as unmet communication needs, caregiver self-reflection, and family support were outside of the framework. In contrast, for the non-disclosing caregivers, the reasons for nondisclosure fit very concisely into the DD-MM framework, particularly with information assessment, recipient assessment, and (non) disclosure efficacy. This study has significant implications for development of communication skills trainings around holding family meetings in India.

9.
Cancer ; 128(21): 3860-3869, 2022 11 01.
Artigo em Inglês | MEDLINE | ID: mdl-36107740

RESUMO

BACKGROUND: Racial and ethnic minorities (REMs) continue to be underrepresented in clinical trials despite the 1993 National Institutes of Health's Revitalization Act mandating the representation of women and underrepresented minority groups in clinical trials. Although Blacks represent 15% and Hispanics 13% of the cancer population, their clinical trial enrollment rates are disproportionately low at 4% to 6% and 3% to 6%, respectively. A systematic review exploring interventions aimed at improving cancer clinical trial (CCT) enrollment for REMs was conducted. METHODS: A systematic search of PubMed, Cochrane CENTRAL, and Ovid PsycINFO was conducted for English-language studies since 1993. Inclusion criteria included peer-reviewed, US-based studies with interventions aimed to recruit underrepresented minority adult patients into cancer clinical trials. REM groups were defined as Black, Hispanic, Asian, American Indian, and Native Hawaiian/other Pacific Islander. RESULTS: The systematic search identified 3123 studies, of which nine met inclusion criteria. Interventions included patient navigation/coaching (n = 4), a clinical trial educational video (n = 2), institutional research infrastructure changes (n = 1), a relationship building and social marketing recruitment model (n = 1), and cultural competency training for providers (n = 1). A statistically significant improvement in accrual was shown in three of the patient navigation interventions, one of the clinical trial educational videos and an institutional research infrastructure change. CONCLUSIONS: This systematic review illustrates several potential mechanisms by which to increase CCT recruitment for patients of REM backgrounds in various clinical settings. More randomized controlled trials are needed to further explore the benefits of these interventions for REMs.


Assuntos
Grupos Minoritários , Neoplasias , Adulto , Minorias Étnicas e Raciais , Etnicidade , Feminino , Humanos , Neoplasias/terapia , Grupos Raciais
10.
J Cancer Educ ; 37(5): 1343-1348, 2022 10.
Artigo em Inglês | MEDLINE | ID: mdl-33544315

RESUMO

The emergence of a novel coronavirus (SARS-CoV-2, causing coronavirus disease 2019 or COVID-19) has disrupted the US medical care system. Telemedicine has rapidly emerged as a critical technology enabling health care visits to continue while supporting social distancing to reduce the risk of COVID-19 transmission among patients, families, and clinicians. This model of patient care is being utilized at major cancer centers around the USA-and tele-oncology (telemedicine in oncology) has rapidly become the primary method of providing cancer care. However, most clinicians have little experience and inadequate training in this new form of care delivery. Because many practicing oncology clinicians are not familiar with telemedicine technology and the best practices for virtual communication, we strongly believe that training in this field is essential. Utilizing best practices of communication skills training, this paper presents a brief tele-oncology communication guide (Comskil TeleOnc) to address the timely need to maximize high-quality care to patients with cancer. The goal of the Comskil TeleOnc Guide is to recognize, elicit, and effectively respond to patients' medical needs and concerns while utilizing empathic responses to communicate understanding, alleviate distress, and provide support via videoconferencing. We recommend five strategies to achieve the communication goal outlined above: (1) Establish the clinician-patient relationship/create rapport, (2) set the agenda, (3) respond empathically to emotions, (4) deliver the information, and (5) effectively end the tele-oncology visit. The guide proposed in this paper is not all-encompassing and may not be applicable to all health care institutions; however, it provides a practical, patient-centered framework to conduct a tele-oncology visit.


Assuntos
COVID-19 , Neoplasias , Telemedicina , Comunicação , Humanos , Oncologia , Neoplasias/terapia , SARS-CoV-2
11.
Palliat Support Care ; : 1-8, 2022 Sep 14.
Artigo em Inglês | MEDLINE | ID: mdl-36102339

RESUMO

OBJECTIVE: Caregivers are critical in advanced care planning (ACP) discussions, which are difficult but necessary to carry out patients' goals of care. We developed and evaluated the feasibility and acceptability of a communication training to equip caregivers of patients with malignant brain tumors with skills to navigate ACP conversations. METHOD: Caregivers completed a 2-h virtual training addressing ACP Discussions with Your Loved One and ACP Discussions with the Medical Team. A pre-training assessment was completed at baseline and a training evaluation was completed one day post-training. A subset of participants completed semi-structured interviews 2 months post-training. RESULTS: Of 15 caregivers recruited, 9 attended the training and 4 completed qualitative interviews. Post-training, 40% felt confident in discussing ACP with loved ones and 67% felt confident doing so with healthcare professionals; 100% reported feeling confident in using skills learned in the training to facilitate these conversations. Data from qualitative interviews highlighted additional benefits of the training in empathic communication skills and fostering social support. SIGNIFICANCE OF RESULTS: Our communication skills training shows promise in supporting caregivers' skills and confidence in engaging in ACP discussions with patients and healthcare providers. A future randomized controlled trial with a larger and more diverse caregiving sample is needed to determine training efficacy.

12.
Psychooncology ; 29(6): 1012-1018, 2020 06.
Artigo em Inglês | MEDLINE | ID: mdl-32128909

RESUMO

OBJECTIVE: This study examined the impact of a survivorship planning consultation (SPC) for patients with Hodgkin's lymphoma and diffuses large B-cell lymphoma on quality of life (QOL). We specifically assessed two potential moderators, cancer worry and perceived empathy, of the intervention effects on QOL. METHODS: This cluster randomized, four-site trial examined the efficacy of a SPC; physicians received communication skills training and applied these skills in a survivorship-focused office visit using a care plan vs a control arm in which physicians were trained to and subsequently provided a time-controlled, manualized wellness rehabilitation consultation focused only on discussion of healthy nutrition and exercise. We examined the effect of the intervention on patients' QOL and examined potential moderators-cancer worry and perceived physician empathy. RESULTS: Forty-two physicians and 198 patients participated. There was no main effect of the intervention on any of the QOL dimensions (ps > 0.10). However, cancer worry was a significant moderator of the effects of the intervention on three QOL domains (physical P = .04; social P = .04; spiritual P = .01) and perceived empathy was a significant moderator of QOL (physical P = .004; psychological P = .04; social P = .01). Specifically, the beneficial effects of the intervention were more pronounced among patients who initially reported higher levels of cancer worry and lower levels of physician empathy. CONCLUSIONS: This study identified two factors, perceived empathy and cancer worry, that were found to impact the QOL of patients who participated in this communication-based survivorship intervention.


Assuntos
Neoplasias/psicologia , Educação de Pacientes como Assunto/métodos , Relações Médico-Paciente , Qualidade de Vida/psicologia , Sobrevivência , Adulto , Ansiedade/prevenção & controle , Empatia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Neoplasias/terapia , Distribuição Aleatória , Apoio Social
13.
J Psychosoc Oncol ; 38(3): 251-271, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-31617830

RESUMO

Objectives: Fear of cancer recurrence (FCR) is a common experience among cancer survivors and often persists after the termination of cancer treatments. The purpose of this paper was to evaluate FCR in survivors of Hodgkin's and diffuse large B-cell lymphomas, given a high rate of survivorship in this patient population.Research Approach: The parent study was a multi-site, cluster-randomized trial to assess a communication skills intervention: survivorship planning consultation (versus a time-attention control - wellness rehabilitation intervention) to promote transition to survivorship.Participants & Methodological Approach: 199 patients enrolled in the study and completed a survivorship (or control) consultation one-month after receiving the news of their survivorship status; 141 of those patients (n = 92 experimental arm, n = 49 control arm) completed an interview at their 6-month follow-up consultation. In the interview, participants described frequency of FCR, causes of FCR, coping mechanisms, and specific things oncologists said to reduce FCR. Both qualitative and quantitative methods were utilized for analyzing participant responses.Findings: The majority (88%) of participants reported experiencing FCR, with a higher number of participants in the experimental arm significantly more likely to endorse FCR compared to the control group participants. The main causes of FCR were having medical appointments and concerns about potential relapse and secondary cancers. Participants endorsed utilizing self-sufficient coping mechanisms. As well, participants reported that oncologists most frequently cited specific cure rates of lymphoma to reduce patients' FCR.Interpretation & Implications for Psychosocial Providers: Communication skills training programs should emphasize FCR in survivorship consultations.


Assuntos
Sobreviventes de Câncer/psicologia , Medo , Linfoma/psicologia , Recidiva Local de Neoplasia/psicologia , Adaptação Psicológica , Adulto , Idoso , Idoso de 80 Anos ou mais , Sobreviventes de Câncer/estatística & dados numéricos , Comunicação , Seguimentos , Humanos , Linfoma/terapia , Pessoa de Meia-Idade , Relações Médico-Paciente , Adulto Jovem
14.
Palliat Support Care ; 18(4): 419-424, 2020 08.
Artigo em Inglês | MEDLINE | ID: mdl-32295656

RESUMO

OBJECTIVE: Effective communication is an essential part of patient-centered care. The complexity of cancer care in older adults makes communication challenging, particularly when older patients have cognitive deficits and lose their autonomy. This paper describes the development, implementation, and evaluation of a communication skills training module for health care providers (HCPs) who work with older adults with cancer, with or at risk of developing cognitive deficits. METHOD: Using a pre-post single arm study design, 99 HCPs from a comprehensive cancer center in North-East USA, who worked primarily with geriatric patients, participated in the study. Participants included Advance Practice Providers (including Nurse Practitioners and Physician Assistants; n = 24, 24.2%); nurses (n = 23, 23.2%), social workers (n = 14, 14.1%), physicians (n = 13, 13.1%), and "other" HCPs (including occupational therapists, physical therapists, and psychologists; n = 20, 20.2%). The HCPs participated in a one-day geriatric communication skills training program in groups of 12-15 over a 2-year period. Participants complete pre-post surveys on module evaluation and perception of self-efficacy as well as pre-post video-recorded Standardized Patient Assessment (SPA) to evaluate communication skill uptake. RESULTS: Most participants evaluated the module positively; over 90% indicated that they agreed or strongly agreed with five of the six module evaluation items. HCPs' self-efficacy in communicating with cancer patients with cognitive deficits significantly increased from pre- to post-module training. There was a significant increase in the following communication skill use from pre- to post-training: checking patient preferences, declaring agenda, and inviting agenda. SIGNIFICANCE OF RESULTS: Results demonstrated a successful implementation of the program as evidenced through favorable program evaluation, significant gains in self-efficacy, as well as significant improvement in several communication skills.


Assuntos
Disfunção Cognitiva/terapia , Neoplasias/psicologia , Relações Profissional-Paciente , Ensino/normas , Idoso , Idoso de 80 Anos ou mais , Institutos de Câncer/organização & administração , Institutos de Câncer/estatística & dados numéricos , Disfunção Cognitiva/psicologia , Comunicação , Competência Cultural/psicologia , Feminino , Humanos , Masculino , Oncologia/educação , Neoplasias/terapia , Enfermagem Oncológica/educação , Desenvolvimento de Programas , Autoeficácia , Inquéritos e Questionários , Ensino/psicologia , Ensino/estatística & dados numéricos
15.
Mol Biol Evol ; 35(2): 383-403, 2018 02 01.
Artigo em Inglês | MEDLINE | ID: mdl-29126122

RESUMO

Haemosporidians are a diverse group of vector-borne parasitic protozoa that includes the agents of human malaria; however, most of the described species are found in birds and reptiles. Although our understanding of these parasites' diversity has expanded by analyses of their mitochondrial genes, there is limited information on these genes' evolutionary rates. Here, 114 mitochondrial genomes (mtDNA) were studied from species belonging to four genera: Leucocytozoon, Haemoproteus, Hepatocystis, and Plasmodium. Contrary to previous assertions, the mtDNA is phylogenetically informative. The inferred phylogeny showed that, like the genus Plasmodium, the Leucocytozoon and Haemoproteus genera are not monophyletic groups. Although sensitive to the assumptions of the molecular dating method used, the estimated times indicate that the diversification of the avian haemosporidian subgenera/genera took place after the Cretaceous-Paleogene boundary following the radiation of modern birds. Furthermore, parasite clade differences in mtDNA substitution rates and strength of negative selection were detected. These differences may affect the biological interpretation of mtDNA gene lineages used as a proxy to species in ecological and parasitological investigations. Given that the mitochondria are critically important in the parasite life cycle stages that take place in the vector and that the transmission of parasites belonging to particular clades has been linked to specific insect families/subfamilies, this study suggests that differences in vectors have affected the mode of evolution of haemosporidian mtDNA genes. The observed patterns also suggest that the radiation of haemosporidian parasites may be the result of community-level evolutionary processes between their vertebrate and invertebrate hosts.


Assuntos
Evolução Biológica , Genoma Mitocondrial , Genoma de Protozoário , Haemosporida/genética , Seleção Genética
16.
Crit Care Med ; 47(5): 700-705, 2019 05.
Artigo em Inglês | MEDLINE | ID: mdl-30855284

RESUMO

OBJECTIVES: Insulin infusion therapy is commonly used in the hospital setting to manage diabetic ketoacidosis and hyperosmolar hyperglycemic state. Clinical evidence suggests both hypoglycemia and glycemic variability negatively impact patient outcomes. The hypothesis of this study was that moderate-intensity insulin therapy decreases hospital length of stay and prevalence of hypoglycemia in patients with diabetic ketoacidosis and hyperosmolar hyperglycemic state. DESIGN: Pre-post study. SETTING: Large academic medical center in the United States. PATIENTS: Two-hundred one consecutive, nonpregnant, adult patients admitted for diabetic ketoacidosis and hyperosmolar hyperglycemic state between October 2010 and December 2014. INTERVENTIONS: High-intensity insulin therapy versus moderate-intensity insulin therapy. High-intensity insulin therapy was designed to rapidly normalize blood glucose levels with bolus doses of insulin and rapid insulin titration. Moderate-intensity insulin therapy was designed to mitigate glycemic variability and hypoglycemia through avoidance of bolus dosing, a liberalized blood glucose target, and gradual insulin titration. MEASUREMENTS AND MAIN RESULTS: Hospital and ICU length of stay were reduced by 23.6% and 38%, respectively. The relative risk of remaining in the hospital at day 7 (0.51; p = 0.022) and day 14 (0.28; p = 0.044) were significantly reduced by the moderate-intensity insulin therapy strategy. The relative risk of remaining in the ICU at 48 hours was significantly lower in the moderate-intensity insulin therapy cohort (0.34; p = 0.0048). The prevalence (35% vs 1%; p = 0.0003) and relative risk (0.028; p = 0.0004) of hypoglycemia were significantly lower in the moderate-intensity insulin therapy cohort. Glycemic variability decreased by 28.6% (p < 0.0001). There was no difference in the time to anion gap closure (p = 0.123). CONCLUSIONS: Moderate-intensity insulin therapy for diabetic ketoacidosis and hyperosmolar hyperglycemic state resulted in improvements in hospital and ICU length of stay, which appeared to be associated with decreased glycemic variability.


Assuntos
Estado Terminal/terapia , Cetoacidose Diabética/tratamento farmacológico , Coma Hiperglicêmico Hiperosmolar não Cetótico/tratamento farmacológico , Hipoglicemiantes/uso terapêutico , Insulina/uso terapêutico , Tempo de Internação/estatística & dados numéricos , Adulto , Estudos de Coortes , Feminino , Humanos , Hiperglicemia/tratamento farmacológico , Resistência à Insulina , Masculino , Pessoa de Meia-Idade
17.
Am J Primatol ; 81(12): e23063, 2019 12.
Artigo em Inglês | MEDLINE | ID: mdl-31692027

RESUMO

The establishment of baseline data on parasites from wild primates is essential to understand how changes in habitat or climatic disturbances will impact parasite-host relationships. In nature, multiparasitic infections of primates usually fluctuate temporally and seasonally, implying that the acquisition of reliable data must occur over time. Individual parasite infection data from two wild populations of New World primates, the saddleback (Leontocebus weddelli) and emperor (Saguinus imperator) tamarin, were collected over 3 years to establish baseline levels of helminth prevalence and parasite species richness (PSR). Secondarily, we explored variation in parasite prevalence across age and sex classes, test nonrandom associations of parasite co-occurrence, and assess the relationship between group size and PSR. From 288 fecal samples across 105 individuals (71 saddleback and 34 emperor tamarins), 10 parasite taxa were identified by light microscopy following centrifugation and ethyl-acetate sedimentation. Of these taxa, none were host-specific, Dicrocoeliidae and Cestoda prevalences differed between host species, Prosthenorchis and Strongylida were the most prevalent. Host age was positively associated with Prosthenorchis ova and filariform larva, but negatively with cestode and the Rhabditoidea ova. We detected no differences between expected and observed levels of co-infection, nor between group size and parasite species richness over 30 group-years. Logistic models of individual infection status did not identify a sex bias; however, age and species predicted the presence of four and three parasite taxa, respectively, with saddleback tamarins exhibiting higher PSR. Now that we have reliable baseline data for future monitoring of these populations, next steps involve the molecular characterization of these parasites, and exploration of linkages with health parameters.


Assuntos
Biodiversidade , Callitrichinae , Helmintíase Animal/epidemiologia , Helmintos/isolamento & purificação , Doenças dos Macacos/epidemiologia , Saguinus , Animais , Feminino , Helmintíase Animal/parasitologia , Masculino , Doenças dos Macacos/parasitologia , Peru/epidemiologia , Prevalência
18.
BMC Genomics ; 19(1): 53, 2018 01 16.
Artigo em Inglês | MEDLINE | ID: mdl-29338715

RESUMO

BACKGROUND: Mitochondria play a key role in the balance of energy and heat production, and therefore the mitochondrial genome is under natural selection by environmental temperature and food availability, since starvation can generate more efficient coupling of energy production. However, selection over mitochondrial DNA (mtDNA) genes has usually been evaluated at the population level. We sequenced by NGS 12 mitogenomes and with four published genomes, assessed genetic variation in ten penguin species distributed from the equator to Antarctica. Signatures of selection of 13 mitochondrial protein-coding genes were evaluated by comparing among species within and among genera (Spheniscus, Pygoscelis, Eudyptula, Eudyptes and Aptenodytes). The genetic data were correlated with environmental data obtained through remote sensing (sea surface temperature [SST], chlorophyll levels [Chl] and a combination of SST and Chl [COM]) through the distribution of these species. RESULTS: We identified the complete mtDNA genomes of several penguin species, including ND6 and 8 tRNAs on the light strand and 12 protein coding genes, 14 tRNAs and two rRNAs positioned on the heavy strand. The highest diversity was found in NADH dehydrogenase genes and the lowest in COX genes. The lowest evolutionary divergence among species was between Humboldt (Spheniscus humboldti) and Galapagos (S. mendiculus) penguins (0.004), while the highest was observed between little penguin (Eudyptula minor) and Adélie penguin (Pygoscelis adeliae) (0.097). We identified a signature of purifying selection (Ka/Ks < 1) across the mitochondrial genome, which is consistent with the hypothesis that purifying selection is constraining mitogenome evolution to maintain Oxidative phosphorylation (OXPHOS) proteins and functionality. Pairwise species maximum-likelihood analyses of selection at codon sites suggest positive selection has occurred on ATP8 (Fixed-Effects Likelihood, FEL) and ND4 (Single Likelihood Ancestral Counting, SLAC) in all penguins. In contrast, COX1 had a signature of strong negative selection. ND4 Ka/Ks ratios were highly correlated with SST (Mantel, p-value: 0.0001; GLM, p-value: 0.00001) and thus may be related to climate adaptation throughout penguin speciation. CONCLUSIONS: These results identify mtDNA candidate genes under selection which could be involved in broad-scale adaptations of penguins to their environment. Such knowledge may be particularly useful for developing predictive models of how these species may respond to severe climatic changes in the future.


Assuntos
Evolução Molecular , Genoma Mitocondrial , Seleção Genética , Spheniscidae/genética , Animais , DNA Mitocondrial/química , Interação Gene-Ambiente , Genômica
19.
Cancer ; 124(23): 4567-4576, 2018 12 01.
Artigo em Inglês | MEDLINE | ID: mdl-30335188

RESUMO

BACKGROUND: Survivors of cancer often describe a sense of abandonment after treatment along with heightened uncertainty and limited knowledge of what lies ahead. This study examined the efficacy of a survivorship care plan (SCP) intervention to help physicians to address survivorship issues through communication skills training plus a new consultation focused on the use of an SCP for patients with Hodgkin lymphoma and diffuse large B-cell lymphoma. METHODS: This 4-site cluster randomized trial examined the efficacy of a survivorship planning consultation (SPC) in patients who achieved complete remission after the completion of first-line therapy (for the SPC, physicians received communication skills training and, using an SCP, applied those skills in a survivorship-focused office visit) versus a control arm in which physicians were trained in and subsequently provided a time-controlled, manualized wellness rehabilitation consultation (WRC) focused only on discussion of healthy nutrition and exercise as rehabilitation after chemotherapy. The primary outcomes for patients were changes in knowledge about lymphoma and adherence to physicians' recommendations for vaccinations and cancer screenings. RESULTS: Forty-two physicians and 198 patients participated across the 4 sites. Patients whose physicians were in the SPC arm had greater knowledge about their lymphoma (P = .01) and showed greater adherence to physician recommendations for influenza vaccinations (P = .02) and colonoscopy (P = .02) than patients whose physicians were in the WRC arm. CONCLUSIONS: A dedicated consultation using an SCP and supported by communication skills training may enhance patients' knowledge and adherence to some health promotion recommendations.


Assuntos
Sobreviventes de Câncer/psicologia , Continuidade da Assistência ao Paciente , Doença de Hodgkin/psicologia , Linfoma Difuso de Grandes Células B/psicologia , Sobrevivência , Adulto , Idoso , Idoso de 80 Anos ou mais , Educação Médica , Feminino , Promoção da Saúde , Humanos , Masculino , Pessoa de Meia-Idade , Planejamento de Assistência ao Paciente , Satisfação do Paciente , Relações Médico-Paciente , Médicos , Encaminhamento e Consulta , Adulto Jovem
20.
Oncology (Williston Park) ; 32(7): 334-8, 2018 07 15.
Artigo em Inglês | MEDLINE | ID: mdl-30080918

RESUMO

Sharing serious news is a key communication task that occurs frequently throughout the trajectory of caring for a cancer patient. When sharing serious news, it is important to consider many factors, including those related to patient diversity, such as cultural and family background; language barriers; socioeconomic factors; and health literacy. Importantly, the way in which serious news is discussed significantly affects many outcomes and aspects of patient care. Sharing serious news is not an innate skill but can be effectively taught and learned.


Assuntos
Comunicação , Neoplasias/psicologia , Relações Médico-Paciente , Revelação da Verdade , Humanos , Preferência do Paciente
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA