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A key parameter of any bottom-up proteomics mass spectrometry experiment is the identity of the enzyme that is used to digest proteins in the sample into peptides. The Casanovo de novo sequencing model was trained using data that was generated with trypsin digestion; consequently, the model prefers to predict peptides that end with the amino acids "K" or "R". This bias is desirable when Casanovo is used to analyze data that was also generated using trypsin but can be problematic if the data was generated using some other digestion enzyme. In this work, we modify Casanovo to take as input the identity of the digestion enzyme alongside each observed spectrum. We then train Casanovo with data generated by using several different enzymes, and we demonstrate that the resulting model successfully learns to capture enzyme-specific behavior. However, we find, surprisingly, that this new model does not yield a significant improvement in sequencing accuracy relative to a model trained without enzyme information but using the same training set. This observation may have important implications for future attempts to make use of experimental metadata in de novo sequencing models.
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Zebrafish (Danio rerio) is now the second most used animal model in biomedical research. As with other vertebrate models, underlying diseases and infections often impact research. Beyond mortality and morbidity, these conditions can compromise research end points by producing nonprotocol induced variation within experiments. Pseudoloma neurophilia, a microsporidium that targets the central nervous system, is the most frequently diagnosed pathogen in zebrafish facilities. The parasite undergoes direct, horizontal transmission within populations, and is also maternally transmitted with spores in ovarian fluid and occasionally within eggs. This transmission explains the wide distribution among research laboratories as new lines are generally introduced as embryos. The infection is chronic, and fish apparently never recover following the initial infection. However, most fish do not exhibit outward clinical signs. Histologically, the parasite occurs as aggregates of spores throughout the midbrain and spinal cord and extends to nerve roots. It often elicits meninxitis, myositis, and myodegeneration when it infects the muscle. There are currently no described therapies for the parasite, thus the infection is best avoided by screening with PCR-based tests and removal of infected fish from a facility. Examples of research impacts include reduced fecundity, behavioral changes, transcriptome alterations, and autofluorescent lesions.
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BACKGROUND: Race dialogues, conversations about race and racism among individuals holding different racial identities, have been proposed as one component of addressing racism in medicine and improving the experience of racially minoritized patients. Drawing on work from several fields, we aimed to assess the scope of the literature on race dialogues and to describe potential benefits, best practices, and challenges of conducting such dialogues. Ultimately, our goal was to explore the potential role of race dialogues in medical education and clinical practice. METHODS: Our scoping review included articles published prior to June 2, 2022, in the biomedicine, psychology, nursing and allied health, and education literatures. Ultimately, 54 articles were included in analysis, all of which pertained to conversations about race occurring between adults possessing different racial identities. We engaged in an interactive group process to identify key takeaways from each article and synthesize cross-cutting themes. RESULTS: Emergent themes reflected the processes of preparing, leading, and following up race dialogues. Preparing required significant personal introspection, logistical organization, and intentional framing of the conversation. Leading safe and successful race dialogues necessitated trauma-informed practices, addressing microaggressions as they arose, welcoming participation and emotions, and centering the experience of individuals with minoritized identities. Longitudinal experiences and efforts to evaluate the quality of race dialogues were crucial to ensuring meaningful impact. DISCUSSION: Supporting race dialogues within medicine has the potential to promote a more inclusive and justice-oriented workforce, strengthen relationships amongst colleagues, and improve care for patients with racially minoritized identities. Potential levers for supporting race dialogues include high-quality racial justice curricula at every level of medical education and valuation of racial consciousness in admissions and hiring processes. All efforts to support race dialogues must center and uplift those with racially minoritized identities.
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BACKGROUND: Ethnically Chinese adults in Canada and the United States face multiple barriers in accessing equitable, culturally respectful care at the end-of-life. Palliative care (PC) is committed to supporting patients and families in achieving goal-concordant, high-quality serious illness care. Yet, current PC delivery may be culturally misaligned. Therefore, understanding ethnically Chinese patients' use of palliative care may uncover modifiable factors to sustained inequities at the end-of-life. OBJECTIVE: To compare the use and delivery of PC in the last year of life between ethnically Chinese and non-Chinese adults. DESIGN: Population-based cohort study. PARTICIPANTS: All Ontario adults who died between January 1st, 2012, and October 31st, 2022, in Ontario, Canada. EXPOSURES: Chinese ethnicity. MAIN MEASURES: Elements of physician-delivered PC, including model of care (generalist; specialist; mixed), timing and location of initiation, and type of palliative care physician at initial consultation. KEY RESULTS: The final study cohort included 527,700 non-Chinese (50.8% female, 77.9 ± 13.0 mean age, 13.0% rural residence) and 13,587 ethnically Chinese (50.8% female, 79.2 ± 13.6 mean age, 0.6% rural residence) adults. Chinese ethnicity was associated with higher likelihoods of using specialist (adjusted odds ratio [aOR] 1.53, 95%CI 1.46-1.60) and mixed (aOR 1.32, 95%CI 1.26-1.38) over generalist models of PC, compared to non-Chinese patients. Chinese ethnicity was also associated with a higher likelihood of PC initiation in the last 30 days of life (aOR 1.07, 95%CI 1.03-1.11), in the hospital setting (aOR 1.24, 95%CI 1.18-1.30), and by specialist PC physicians (aOR 1.33, 95%CI 1.28-1.38). CONCLUSIONS: Chinese ethnicity was associated with a higher likelihood of mixed and specialist models of PC delivery in the last year of life compared to adults who were non-Chinese. These observed differences may be due to later initiation of PC in hospital settings, and potential differences in unmeasured needs that suggest opportunities to initiate early, community-based PC to support ethnically Chinese patients with serious illness.
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MOTIVATION: One of the core problems in the analysis of protein tandem mass spectrometry data is the peptide assignment problem: determining, for each observed spectrum, the peptide sequence that was responsible for generating the spectrum. Two primary classes of methods are used to solve this problem: database search and de novo peptide sequencing. State-of-the-art methods for de novo sequencing use machine learning methods, whereas most database search engines use hand-designed score functions to evaluate the quality of a match between an observed spectrum and a candidate peptide from the database. We hypothesized that machine learning models for de novo sequencing implicitly learn a score function that captures the relationship between peptides and spectra, and thus may be re-purposed as a score function for database search. Because this score function is trained from massive amounts of mass spectrometry data, it could potentially outperform existing, hand-designed database search tools. RESULTS: To test this hypothesis, we re-engineered Casanovo, which has been shown to provide state-of-the-art de novo sequencing capabilities, to assign scores to given peptide-spectrum pairs. We then evaluated the statistical power of this Casanovo score function, Casanovo-DB, to detect peptides on a benchmark of three mass spectrometry runs from three different species. In addition, we show that re-scoring with the Percolator post-processor benefits Casanovo-DB more than other score functions, further increasing the number of detected peptides.
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Bases de Dados de Proteínas , Peptídeos , Peptídeos/química , Aprendizado de Máquina , Espectrometria de Massas/métodos , Algoritmos , Análise de Sequência de Proteína/métodos , Espectrometria de Massas em Tandem/métodosRESUMO
Early palliative care, palliative care integrated with oncology care early in the course of illness, has myriad benefits for patients and their caregivers, including improved quality of life, reduced physical and psychological symptom burden, enhanced prognostic awareness, and reduced health care utilization at the end of life. Although ASCO and others recommend early palliative care for all patients with advanced cancer, widespread implementation of early palliative care has not been realized because of barriers such as insufficient reimbursement and a palliative care workforce shortage. Investigators have recently tested several implementation strategies to overcome these barriers, including triggers for palliative care consultations, telehealth delivery, navigator-delivered interventions, and primary palliative care interventions. More research is needed to identify mechanisms to distribute palliative care optimally and equitably. Simultaneously, the transformation of the oncology treatment landscape has led to shifts in the supportive care needs of patients and caregivers, who may experience longer, uncertain trajectories of cancer. Now, palliative care also plays a clear role in the care of patients with hematologic malignancies and may be beneficial for patients undergoing phase I clinical trials and their caregivers. Further research and clinical guidance regarding how to balance the risks and benefits of opioid therapy and safely manage cancer-related pain across this wide range of settings are urgently needed. The strengths of early palliative care in supporting patients' and caregivers' coping and centering decisions on their goals and values remain valuable in the care of patients receiving cutting-edge personalized cancer care.
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Neoplasias , Cuidados Paliativos , Medicina de Precisão , Humanos , Cuidados Paliativos/métodos , Neoplasias/terapia , Medicina de Precisão/métodos , Qualidade de VidaRESUMO
PURPOSE: To provide evidence-based guidance to oncology clinicians, patients, nonprofessional caregivers, and palliative care clinicians to update the 2016 ASCO guideline on the integration of palliative care into standard oncology for all patients diagnosed with cancer. METHODS: ASCO convened an Expert Panel of medical, radiation, hematology-oncology, oncology nursing, palliative care, social work, ethics, advocacy, and psycho-oncology experts. The Panel conducted a literature search, including systematic reviews, meta-analyses, and randomized controlled trials published from 2015-2023. Outcomes of interest included quality of life (QOL), patient satisfaction, physical and psychological symptoms, survival, and caregiver burden. Expert Panel members used available evidence and informal consensus to develop evidence-based guideline recommendations. RESULTS: The literature search identified 52 relevant studies to inform the evidence base for this guideline. RECOMMENDATIONS: Evidence-based recommendations address the integration of palliative care in oncology. Oncology clinicians should refer patients with advanced solid tumors and hematologic malignancies to specialized interdisciplinary palliative care teams that provide outpatient and inpatient care beginning early in the course of the disease, alongside active treatment of their cancer. For patients with cancer with unaddressed physical, psychosocial, or spiritual distress, cancer care programs should provide dedicated specialist palliative care services complementing existing or emerging supportive care interventions. Oncology clinicians from across the interdisciplinary cancer care team may refer the caregivers (eg, family, chosen family, and friends) of patients with cancer to palliative care teams for additional support. The Expert Panel suggests early palliative care involvement, especially for patients with uncontrolled symptoms and QOL concerns. Clinicians caring for patients with solid tumors on phase I cancer trials may also refer them to specialist palliative care.Additional information is available at www.asco.org/supportive-care-guidelines.
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Neoplasias , Cuidados Paliativos , Humanos , Cuidados Paliativos/normas , Neoplasias/terapia , Qualidade de Vida , Oncologia/normasRESUMO
CONTEXT: Interventions to improve the quality of care for people affected by serious illness commonly fail to reach patients from marginalized and underserved communities, which include those characterized by racialized or indigenous identity, sexual and gender minority status, and rural living. Interventions to improve care through serious illness conversations have demonstrated benefit, but little is known about their implementation in health systems that predominantly serve these patient groups. OBJECTIVES: The study aimed to understand factors influencing implementation of a serious illness communication-focused intervention-the Serious Illness Care Program in health systems who primarily provide care to marginalized and underserved communities. METHODS: Qualitative interviews (16) and focus groups (3) were conducted with 19 interdisciplinary team members from six geographically diverse U.S. healthcare systems. Using a template analysis approach, investigators coded data inductively and deductively to identify themes. RESULTS: Three themes emerged: patient factors, intervention elements, and health system contextual factors. Participants highlighted mission-driven efforts, creativity, interprofessional practice, and trainees as enablers of success. They identified weaknesses in the intervention's communication tool-the Serious Illness Conversation Guide as barriers to implementation of conversations. Resource constraints, socio-economic vulnerability, and mistrust in the health system were seen as additional barriers. CONCLUSIONS: Health systems that provide care to underserved and marginalized communities face unique challenges implementing the Serious Illness Care Program. They also possess assets, some unique to these settings, that support program adoption. Findings suggest that implementation of similar programs in low-resource healthcare settings may help address unmet needs among marginalized populations.
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Pesquisa Qualitativa , Humanos , Provedores de Redes de Segurança , Grupos Focais , Masculino , Feminino , Estados Unidos , Comunicação , Estado Terminal , Atenção à SaúdeRESUMO
Patients with cancer and their families comprise a significant population served by palliative care. Close collaboration between oncology clinicians and palliative care teams has demonstrated improved patient-centered care, especially when this care is integrated early in the course of the disease. The American Society of Clinical Oncology recently released their updated clinical practice guidelines for palliative care in oncology, which provide new opportunities for collaboration to expand the scope of care.
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Oncologia , Neoplasias , Cuidados Paliativos , Humanos , Neoplasias/terapia , Assistência Centrada no Paciente , Prestação Integrada de Cuidados de Saúde/organização & administração , Guias de Prática Clínica como Assunto , Equipe de Assistência ao Paciente/organização & administração , Estados Unidos , Comportamento CooperativoRESUMO
Membrane-bound particles in plasma are composed of exosomes, microvesicles, and apoptotic bodies and represent ~1-2% of the total protein composition. Proteomic interrogation of this subset of plasma proteins augments the representation of tissue-specific proteins, representing a "liquid biopsy," while enabling the detection of proteins that would otherwise be beyond the dynamic range of liquid chromatography-tandem mass spectrometry of unfractionated plasma. We have developed an enrichment strategy (Mag-Net) using hyper-porous strong-anion exchange magnetic microparticles to sieve membrane-bound particles from plasma. The Mag-Net method is robust, reproducible, inexpensive, and requires <100 µL plasma input. Coupled to a quantitative data-independent mass spectrometry analytical strategy, we demonstrate that we can collect results for >37,000 peptides from >4,000 plasma proteins with high precision. Using this analytical pipeline on a small cohort of patients with neurodegenerative disease and healthy age-matched controls, we discovered 204 proteins that differentiate (q-value < 0.05) patients with Alzheimer's disease dementia (ADD) from those without ADD. Our method also discovered 310 proteins that were different between Parkinson's disease and those with either ADD or healthy cognitively normal individuals. Using machine learning we were able to distinguish between ADD and not ADD with a mean ROC AUC = 0.98 ± 0.06.
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BACKGROUND: Health disparities exist in end-of-life (EOL) care. Individuals and communities that are marginalized due to their race, ethnicity, income, geographic location, language, or cultural background experience systemic barriers to access and receive lower quality EOL care. Advance care planning (ACP) prepares patients and their caregivers for EOL decision-making for the purpose of promoting high-quality EOL care. Low engagement in ACP among marginalized populations is thought to have contributed to disparity in EOL care. To advance health equity and deliver care that aligns with the goals and values of each individual, there is a need to improve ACP for marginalized populations. AIM: To describe how patients from marginalized populations experience and perceive ACP. METHODS: We used an interpretive phenomenological approach with semi-structured qualitative interviews. Participants were recruited from four primary care clinics and one nursing home in a US Pacific Northwest city. Thirty patients from marginalized populations with serious illness participated in individual interviews between January and December 2021. Participants were asked to describe their experiences and perceptions about ACP during the interviews. RESULTS: The mean age of 30 participants was 69.5; 19 (63%) were women; 12 (40%) identified as Asian/Pacific Islanders, 10 (33%) as Black; and 9 (30%) were non-native English speakers. Our three key findings were: 1) patients from marginalized populations are willing to engage in ACP; 2) there were multiple obstacles to engaging in ACP; and 3) meaningful ACP conversations could happen when clinicians listen. Although participants from marginalized populations were willing to engage in ACP, a fragmented and restrictive healthcare system and clinicians' biased behaviors or lack of interest in knowing their patients were obstacles. Participants who felt their clinicians took time and listened were encouraged to engage in ACP. CONCLUSION: Patients from marginalized populations are willing to engage in ACP conversations despite a common belief otherwise. However, obstacles to meaningful ACP conversations with healthcare providers exist. Clinicians need to be aware of these obstacles and listen to build trust and engage marginalized patients in mutually meaningful ACP conversations.
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Planejamento Antecipado de Cuidados , Assistência Terminal , Humanos , Feminino , Adulto , Masculino , Pesquisa Qualitativa , Cuidadores , Pessoal de SaúdeRESUMO
Community surveillance surveys offer an opportunity to obtain important and timely public health information that may help local municipalities guide their response to public health threats. The objective of this paper is to present approaches, challenges, and solutions from SARS-CoV-2 surveillance surveys conducted in different settings by 2 research teams. For rapid assessment of a representative sample, a 2-stage cluster sampling design was developed by an interdisciplinary team of researchers at Oregon State University between April 2020 and June 2021 across 6 Oregon communities. In 2022, these methods were adapted for New York communities by a team of veterinary, medical, and public health practitioners. Partnerships were established with local medical facilities, health departments, COVID-19 testing sites, and health and public safety staff. Field staff were trained using online modules, field manuals describing survey methods and safety protocols, and in-person meetings with hands-on practice. Private and secure data integration systems and public awareness campaigns were implemented. Pilot surveys and field previews revealed challenges in survey processes that could be addressed before surveys proceeded. Strong leadership, robust trainings, and university-community partnerships proved critical to successful outcomes. Cultivating mutual trust and cooperation among stakeholders is essential to prepare for the next pandemic.
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OBJECTIVES: The Serious Illness Conversation Guide (SICG) has emerged as a framework for conversations with patients with a serious illness diagnosis. This study reports on narratives generated from open-ended questions of a novel assessment tool, the Serious Illness Conversation-Evaluation Exercise (SIC-Ex), to assess resident-led conversations with patients in oncology outpatient clinics. DESIGN: Qualitative study using template analysis. SETTING: Three academic cancer centres in Canada. PARTICIPANTS: 7 resident physicians (trainees), 7 patients from outpatient cancer clinics, 10 preceptors (raters) consisting of medical oncologists, palliative care physicians and radiation oncologists. INTERVENTIONS: Each trainee conducted an SIC with a patient, which was videotaped. The raters watched the videos and evaluated each trainee using the novel SIC-Ex and the reference Calgary-Cambridge Guide (CCG) initially and again 3 months later. Two independent coders used template analysis to code the raters' narrative comments and identify themes/subthemes. OUTCOME MEASURES: How narrative comments aligned with elements of the CCG and SICG. RESULTS: Template analysis yielded four themes: adhering to SICG, engaging patients and family members, conversation management and being mindful of demeanour. Narrative comments identified numerous verbal and non-verbal elements essential to SICG. Some comments addressing general skills in engaging patients/families and managing the conversation (eg, setting agenda, introduction, planning, exploring, non-verbal communication) related to both the CCG and SICG, whereas other comments such as identifying substitute decision maker(s), affirming commitment and introducing Advance Care Planning were specific to the SICG. CONCLUSIONS: Narrative comments generated by SIC-Ex provided detailed and nuanced insights into trainees' competence in SIC, beyond the numerical ratings of SIC-Ex and the general communication skills outlined in the CCG, and may contribute to a more fulsome assessment of SIC skills.
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Planejamento Antecipado de Cuidados , Médicos , Humanos , Retroalimentação , Comunicação , NarraçãoRESUMO
RATIONALE & OBJECTIVE: Because of the high risk of waitlist mortality and posttransplant complications, kidney transplant (KT) patients may benefit from advance care planning (ACP) and palliative care consultation (PCC). We quantified the prevalence and racial disparities in ACP and PCC among KT candidates and recipients. STUDY DESIGN: Prospective cohort study. SETTING & PARTICIPANTS: 2,575 adult KT candidates and 1,233 adult recipients (2008-2020). EXPOSURE: Race and ethnicity. OUTCOMES: All reports of ACP and PCC were abstracted from chart review. ACP was defined as patient self-report of an advance directive, presence of an advance directive in the medical record, or a documented goals-of-care conversation with a provider. PCC was defined as an ordered referral or a documented palliative care note in the medical record. ANALYTICAL APPROACH: Racial/ethnic disparities in ACP/PCC were estimated using adjusted logistic regression. RESULTS: 21.4% of KT candidates and 34.9% of recipients engaged in ACP. There were racial/ethnic disparities in ACP among KT candidates (White, 24.4%; Black, 19.1%; Hispanic, 15%; other race and ethnicity, 21.1%; P=0.008) and recipients (White, 39.5%; Black, 31.2%; Hispanic, 26.3%; other race and ethnicity, 26.6%; P=0.007). After adjustment, Black KT recipients had a 29% lower likelihood of engaging in ACP (OR, 0.71; 95% CI, 0.55-0.91) than White KT recipients. Among older (aged≥65 years) recipients, those who were Black had a lower likelihood of engaging in ACP, but there was no racial disparity among younger recipients (P=0.020 for interaction). 4.2% of KT candidates and 5.1% of KT recipients engaged in PCC; there were no racial disparities in PCC among KT candidates (White, 5.3%; Black, 3.6%; Hispanic, 2.5%; other race and ethnicity, 2.1%; P=0.13) or recipients (White, 5.5%; Black, 5.6%; Hispanic, 0.0%; other race and ethnicity, 1.3%; P = 0.21). LIMITATIONS: Generalizability may be limited to academic transplant centers. CONCLUSIONS: ACP is not common among KT patients, and minoritized transplant patients are least likely to engage in ACP; PCC is less common. Future efforts should aim to integrate ACP and PCC into the KT process. PLAIN-LANGUAGE SUMMARY: Kidney transplant (KT) candidates and recipients are at elevated risk of morbidity and mortality. They may benefit from completing a document or conversation with their palliative care provider that outlines their future health care wishes, known as advance care planning (ACP), which is a component of palliative care consultation (PCC). We wanted to determine how many KT candidates and recipients have engaged in ACP or PCC and identify potential racial disparities. We found that 21.4% of candidates and 34.9% of recipients engaged in ACP. After adjustment, Black recipients had a 29% lower likelihood of engaging in ACP. We found that 4.2% of KT candidates and 5.1% of KT recipients engaged in PCC, with no racial disparities found in PCC.
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Planejamento Antecipado de Cuidados , Transplante de Rim , Cuidados Paliativos , Adulto , Humanos , Negro ou Afro-Americano , Estudos Prospectivos , Encaminhamento e Consulta , População Branca , Hispânico ou LatinoRESUMO
Here, we provide evidence that the freshwater parasitic copepod, Salmincola californiensis, acts as a vector for Aeromonas salmonicida. While investigating the effects of S. californiensis on Chinoook salmon (Oncorhynchus tshawytscha), we tangentially observed that fish infected with the copepod developed furunculosis, caused by A. salmonicida. This occurred despite being reared in pathogen-free well water in a research facility with no prior history of spontaneous infection. We further investigated the possibility of S. californiensis to serve as a vector for the bacterium via detection of fluorescently labelled A. salmonicida inside the egg sacs from copepods in which the fish hosts were experimentally infected with GFP-A449 A. salmonicida. We then evaluated copepod egg sacs that were collected from adult Chinook salmon from a freshwater hatchery with A. salmonicida infections confirmed by either culture or PCR. The bacterium was cultured on tryptic soy agar plates from 75% of the egg sacs, and 61% were positive by PCR. These three separate experiments indicate an alternative tactic of transmission in addition to direct transmission of A. salmonicida in captivity. The copepod may play an important role in transmission of the bacterium when fish are more dispersed, such as in the wild.
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Aeromonas salmonicida , Aeromonas , Copépodes , Doenças dos Peixes , Furunculose , Infecções por Bactérias Gram-Negativas , Salmonidae , Animais , Furunculose/microbiologia , Doenças dos Peixes/microbiologia , Salmão/microbiologia , Água Doce , Infecções por Bactérias Gram-Negativas/veterinária , Infecções por Bactérias Gram-Negativas/microbiologiaRESUMO
BACKGROUND: The present study explored the acceptability of psilocybin-assisted group therapy from the perspective of patients with cancer and depression who participated in a clinical trial assessing the safety and efficacy of this novel intervention. METHODS: Guided by the conceptual framework of acceptability, the authors conducted semi-structured interviews with participants of the psilocybin trial. Data were analyzed using template and thematic analyses. RESULTS: Participants' (n = 28) perspectives on the acceptability of the group and simultaneous sessions was generally positive, both in terms of safety and efficacy: first, the groups contributed to increase participants' sense of safety and preparedness as they were engaging in the therapy; and second, the groups fostered a sense of connection and of belonging, which served to enrich and deepen the meaning of participants' experience, ultimately opening a dimension of self-transcendence and compassion. Other subthemes related to factors influencing the acceptability of the group approach included: 1) the importance of the therapeutic framework, 2) the complementary value of individual sessions, 3) disruptive factors related to the group and/or simultaneous setting, and 4) opportunities and challenges related to group size and how to structure interactions. CONCLUSIONS: This study enhances understanding of what promotes acceptability of the psilocybin-assisted therapy group model for the treatment of MDD in cancer patients. PLAIN LANGUAGE SUMMARY: We conducted exit interviews with participants of a phase 2 trial of psilocybin-assisted therapy (PAT) conducted in a community cancer center, to assess the acceptability of a novel psilocybin delivery model combining simultaneous individual therapy and group sessions. Our findings support the acceptability of this intervention and suggest that in addition to being feasible, it might also enhance participants' perceived safety and efficacy compared to uniquely individual or group delivery models of PAT. Our analysis highlights critical factors conditioning acceptability and suggests new ways PAT may be scaled and integrated into cancer care.
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Transtorno Depressivo Maior , Neoplasias , Psicoterapia de Grupo , Humanos , Psilocibina/uso terapêutico , Transtorno Depressivo Maior/tratamento farmacológico , Psicoterapia , Neoplasias/tratamento farmacológico , Neoplasias/induzido quimicamenteRESUMO
BACKGROUND: Psychedelic-assisted therapies (PAT) are emerging as a promising treatment for psycho-existential distress in patients with serious illness. A recent qualitative analysis of perspectives of 17 experts in serious illness care and/or PAT research identified divergent views on the therapeutic potential and safety of PAT in patients with serious illness. This paper further analyzes the factors that may influence these views. OBJECTIVES: To identify factors underlying the attitudes of experts in serious illness care and/or PAT toward PAT and its potential role in serious illness care. METHODS: Semi-structured interviews of 17 experts in serious illness care and/or PAT from the United States and Canada were analyzed to identify factors cited as influencing their views on PAT. RESULTS: Five factors were identified as influencing experts' attitudes toward PAT: perception of unmet need, knowledge of empirical studies of PAT, personal experience with psychedelics, professional background, and age/generation. In addition, an integrative theme emerged from the analysis, namely PAT's disruptive potential at 4 levels relevant to serious illness care: patient's experience of self, illness, and death; relationships with loved ones and health-care providers; existing clinical models of serious illness care; and societal attitudes toward death. Whether this disruptive potential was viewed as a therapeutic opportunity, or an undue risk, was central in influencing experts' level of support. Experts' perception of this disruptive potential was directly influenced by the 5 identified factors. SIGNIFICANCE OF RESULTS: Points of disruption potentially invoked by PAT in serious illness care highlight important practical and philosophical considerations when working to integrate PAT into serious illness care delivery in a safe and effective way.
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OBJECTIVE: We explore apparent infection of Salmincola californiensis arising during investigations involving this lernaeopodid copepod parasitic on Pacific salmon and trout Oncorhynchus spp. METHODS: We noted occasional unusual coloration of adult female copepods collected from the wild. These females were bright blue and pink in contrast to the cream white coloration characteristic of the copepod. We also observed that similar color patterns developed under laboratory settings when copepod eggs were held for hatching. In paired egg cases, we found consistent hatching failure of blue and pink eggs and patterns in apparent disease development that would be consistent with both vertical and horizontal transmission. RESULT: Attempts to identify the cause of the apparent infection using genetic methods and transmission electron microscopy were inconclusive. CONCLUSION: Iridovirus infection was initially suspected, but bacterial infection is also plausible. This apparent reduced hatching success of S. californiensis warrants further exploration as it could reduce local abundances. Given the potential importance of a disease impacting this copepod, a parasite that itself affects endangered and commercially important Pacific salmon and trout, future research would benefit from clarification of the apparent infection through additional sequencing, primer development, visualization, and exploration into specificity and transmission.