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1.
Am J Nephrol ; 55(2): 206-213, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-37939689

RESUMO

INTRODUCTION: Collaborative management of kidney disease relies on coordinated and effective partnerships between multiple providers. Siloed traditional health systems often result in delays, barriers to treatment access, and inefficient monitoring. METHODS: We conducted a 1-year observational mixed-methods study. We included all consecutive referrals except for patients without telephone access. We assessed 4 domains of outcomes: (1) patient and caregiver experience, (2) provider experience (e.g., physicians and pharmacists), (3) clinical outcomes specific to medication-related outcomes (e.g., adherence, adverse drug events [ADEs]), and (4) value and efficiency (i.e., medication access, defined as time to treatment and resolution of medication reimbursement issues). RESULTS: Sixty-five patients were referred to the integrated virtual pharmacy (iVRx) model. Most (72%) patients were male. Patients had a median (min, max) age of 60 (27, 85) years and were taking 8 (4, 13) medications. Compared with traditional care delivery models, medication access improved for 56% of participants. Direct home delivery of medication resulted in 91% of patients receiving prescriptions within 2 days of a nephrologist visit. During more than 2,000 pharmacist-patient encounters, 208 ADEs were identified that required clinician intervention to prevent patient harm. When these ADEs were classified by severity, 53% were mild, 45% were moderate (e.g., delaying dose titration in patients initiated on glucagon-like peptide 1 (GLP-1) agonists due to intolerable gastrointestinal side effects), and the remaining 2% of ADEs were severe, meaning clinical intervention was required to prevent a serious outcome (e.g., uncontrolled blood pressure, prevention of acute kidney injury). Nephrologists reported high satisfaction with iVRx, citing efficiency, timely response, and collaboration with pharmacists as key facilitators. Of the 65 patient participants, 98% reported being extremely satisfied. CONCLUSIONS: The iVRx is an acceptable and feasible clinical strategy. Our pilot program was associated with improved kidney care by increasing medication access for patients and avoiding potential harms associated with ADEs.


Assuntos
Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos , Farmácia , Insuficiência Renal Crônica , Humanos , Masculino , Feminino , Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos/prevenção & controle , Farmacêuticos , Encaminhamento e Consulta , Insuficiência Renal Crônica/complicações , Insuficiência Renal Crônica/tratamento farmacológico
2.
Dig Dis Sci ; 68(4): 1411-1425, 2023 04.
Artigo em Inglês | MEDLINE | ID: mdl-36350475

RESUMO

INTRODUCTION: Esophageal foreign body impaction (FBI) is a commonly encountered gastrointestinal emergency requiring immediate intervention. Foreign bodies can be composed of food, commonly referred to as a "food bolus" (FB), or other matter (non-food). We aim to conduct systematic review and meta-analysis to compare cap-assisted and conventional endoscopic techniques for removal of esophageal FBI. METHODS: A comprehensive search technique was utilized to identify studies that used capped endoscopic devices to remove FB or other esophageal foreign bodies. The primary outcomes were the technical success rate, rate of en bloc retrieval, and procedure time. Secondary outcomes were overall adverse events, bleeding, mucosal tears, and perforation. RESULTS: Seven studies with a total of 1407 patients were included. The mean patient age was 55.3 (SD ± 7.2) years and 44.8% of patients were male. There were two RCTs and five observational studies among the included studies. The technical success rate was significantly higher in the cap-assisted group compared to the conventional group (OR 3.47, CI 1.68-7.168, I2 = 0%, p = < 0.001), as well as the en bloc retrieval rate (OR 26.90, CI 17.82-40.60, I2 = 0%, p = 0.001). There was a trend towards lower procedural time for the cap-assisted group compared to the conventional group, although the difference did not reach statistical significance (MD - 10.997, CI - 22.78-0.786, I2 = 99.9%, p = 0.06). The overall adverse events were significantly lower in the cap-assisted group compared to the conventional group (OR 0.118, CI 0.018-0.792, I2 = 81.79%, p = 0.02). CONCLUSION: The cap-assisted technique has improved efficacy and safety. To confirm these results, larger randomized trials are warranted.


Assuntos
Esôfago , Corpos Estranhos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Endoscopia , Esôfago/cirurgia , Alimentos , Corpos Estranhos/diagnóstico por imagem , Corpos Estranhos/cirurgia , Trato Gastrointestinal , Estudos Retrospectivos
3.
Pract Neurol ; 22(1): 57-59, 2022 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-34740963

RESUMO

Chronic immune sensory polyradiculopathy (CISP) is a rare variant of chronic inflammatory demyelinating polyradiculoneuropathy (CIDP). We describe a man with isolated sensory ataxia whose initial investigations included normal nerve conduction studies and normal non-enhanced MR imaging of whole spine, but whose subsequent investigations showed delayed somatosensory evoked potential (SSEP) responses of the lower limbs, elevated cerebrospinal fluid (CSF) protein and lumbosacral nerve roots enhancement on MR imaging. We diagnosed CISP and he improved following intravenous immunoglobulin. Proposed diagnostic criteria for CISP are sensory symptoms with a polyneuropathic distribution without weakness, and normal motor and sensory nerve conduction and electromyography (EMG) studies, plus at least two of: abnormal SSEPs not due to central nervous system (CNS) involvement, MRI showing gadolinium enhancement or hypertrophy of the nerve roots, cauda equina or plexuses, and elevated CSF protein with normal cell count. Intravenous immunoglobulin is an effective treatment.


Assuntos
Polirradiculoneuropatia Desmielinizante Inflamatória Crônica , Polirradiculopatia , Meios de Contraste , Gadolínio , Humanos , Imageamento por Ressonância Magnética , Masculino , Polirradiculoneuropatia Desmielinizante Inflamatória Crônica/diagnóstico por imagem
4.
Cancer Immunol Immunother ; 70(8): 2389-2400, 2021 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-33507343

RESUMO

Conditional genetically engineered mouse models (GEMMs) of non-small cell lung cancer (NSCLC) harbor common oncogenic driver mutations of the disease, but in contrast to human NSCLC these models possess low tumor mutational burden (TMB). As a result, these models often lack tumor antigens that can elicit host adaptive immune responses, which limits their utility in immunotherapy studies. Here, we establish Kras-mutant murine models of NSCLC bearing the common driver mutations associated with the disease and increased TMB, by in vitro exposure of cell lines derived from GEMMs of NSCLC [KrasG12D (K), KrasG12DTp53-/-(KP), KrasG12DTp53+/-Lkb1-/- (KPL)] to the alkylating agent N-methyl-N-nitrosourea (MNU). Increasing the TMB enhanced host anti-tumor T cell responses and improved anti-PD-1 efficacy in syngeneic models across all genetic backgrounds. However, limited anti-PD-1 efficacy was observed in the KPL cell lines with increased TMB, which possessed a distinct immunosuppressed tumor microenvironment (TME) primarily composed of granulocytic myeloid-derived suppressor cells (G-MDSCs). This KPL phenotype is consistent with findings in human KRAS-mutant NSCLC where LKB1 loss is a driver of primary resistance to PD-1 blockade. In summary, these novel Kras-mutant NSCLC murine models with known driver mutations and increased TMB have distinct TMEs and recapitulate the therapeutic vulnerabilities of human NSCLC. We anticipate that these immunogenic models will facilitate the development of innovative immunotherapies in NSCLC.


Assuntos
Carcinoma Pulmonar de Células não Pequenas/genética , Neoplasias Pulmonares/genética , Mutação/genética , Proteínas Proto-Oncogênicas p21(ras)/genética , Animais , Antígeno B7-H1/genética , Biomarcadores Tumorais/genética , Linhagem Celular Tumoral , Modelos Animais de Doenças , Camundongos , Proteínas Serina-Treonina Quinases/genética , Microambiente Tumoral/genética , Proteína Supressora de Tumor p53/genética
5.
J Intensive Care Med ; 35(10): 1123-1128, 2020 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-30572756

RESUMO

PURPOSE: Passive leg raise (PLR), in combination with technologies capable of capturing stroke volume changes, has been widely adopted in the management of shock. However, dedicated evaluation of safety, feasibility, and receptiveness of patients and nursing staff to PLR maneuver is missing. METHODS: A noninterventional, prospective trial recruited adult patients with onset of undifferentiated shock within 24 hours with persistent vasopressor requirements despite fluid resuscitation. A standardized PLR maneuver was used to compare two noninvasive hemodynamic monitoring systems, each without significant impact on the performance of the maneuver. Safety and efficacy of the PLR were evaluated via subjective and objective measures. Objective measures of patient comfort and tolerance were evaluated through changes in vital signs, sedation, and analgesia requirements. Nurses and awake patients completed surveys on their experience. RESULTS: Seventy-nine patients were enrolled. Testing was aborted in 2 cases for medical reasons (one patient developed rapid atrial fibrillation, second had profound desaturation). Of all, 5.4% of patients required additional vasopressor support after completion of the PLR maneuver due to persistent hypotension and 4.1% of patients required additional sedation. Among awake patients (N = 35), 6% reported pain and 29% reported discomfort. A total of 11% of nurses reported minor technical difficulties with the maneuver. CONCLUSION: Passive leg raise maneuver leads to a few serious but reversible complications in a selected population of hemodynamically unstable patients. Although it provides relevant diagnostic information, it may impact patient care. Treating physician should be aware of infrequent but possible complications and appreciate the impact of the maneuver on patients' comfort and nursing workload.


Assuntos
Cuidados Críticos/métodos , Aceitação pelo Paciente de Cuidados de Saúde/estatística & dados numéricos , Posicionamento do Paciente/métodos , Choque/terapia , Idoso , Analgesia/estatística & dados numéricos , Estudos de Viabilidade , Feminino , Hemodinâmica , Humanos , Hipnóticos e Sedativos/uso terapêutico , Unidades de Terapia Intensiva , Perna (Membro) , Masculino , Pessoa de Meia-Idade , Postura , Estudos Prospectivos , Choque/fisiopatologia , Resultado do Tratamento
7.
Am J Nephrol ; 50(4): 262-271, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31473734

RESUMO

BACKGROUND: Collaborative management of kidney disease relies on coordinated and effective partnerships between multiple provider teams. Siloed care contributes to limited access between physicians, resulting in delays in the diagnosis and treatment of kidney disease and inappropriate use of healthcare resources. These gaps contribute to dissatisfied and disempowered providers and patients. Digital systems such as eConsult can support collaborative management and address these gaps, thereby streamlining the consultation and referral process between primary care physicians (PCPs) and nephrologists. In this study, we evaluated an established eConsult platform integrated with a central triage process for a network of PCPs and nephrologists. The study aimed to assess the acceptability, feasibility, and impact on access to nephrology when using eConsult integrated into the management of kidney disease between PCPs and nephrologists. METHODS: We conducted a 1-year pilot study and used mixed methods to measure the acceptability and feasibility of using eConsult for the management of kidney disease. We compared eConsult and traditional referrals with respect to types of consultation, referrals, and times to response to determine impact on access to kidney care. We conducted semi-structured interviews of PCPs and nephrologists to assess physician experience. RESULTS: From January 8, 2018, to January 11, 2019, 52 PCPs and 23 nephrologists participated in the study, with 250 traditional referrals and 106 eConsults submitted during that period. The median response time for eConsult was 15 (3-64) h, with 25% originating outside the central Toronto region. The median time to first clinic appointment from a traditional referral was 4 months (111 [61-163] days). PCP and nephrologist interviews revealed high user satisfaction, citing efficiency and timely response as key facilitators. CONCLUSION: The eConsult platform was acceptable, feasible, and facilitated access to nephrology care compared to traditional referrals. Physicians report improvements in physician care delivery, nephrology care gaps, patient experience, and healthcare utilization.


Assuntos
Comunicação Interdisciplinar , Nefropatias/terapia , Nefrologia/organização & administração , Equipe de Assistência ao Paciente/organização & administração , Encaminhamento e Consulta , Acessibilidade aos Serviços de Saúde , Humanos , Internet , Nefrologia/métodos , Ontário , Satisfação do Paciente , Projetos Piloto , Atenção Primária à Saúde/métodos , Estudos Retrospectivos , Software , Telemedicina
8.
Crit Care Med ; 46(11): e1040-e1046, 2018 11.
Artigo em Inglês | MEDLINE | ID: mdl-30134304

RESUMO

OBJECTIVES: Adequate assessment of fluid responsiveness in shock necessitates correct interpretation of hemodynamic changes induced by preload challenge. This study evaluates the accuracy of point-of-care Doppler ultrasound assessment of the change in carotid corrected flow time induced by a passive leg raise maneuver as a predictor of fluid responsiveness. Noninvasive cardiac output monitoring (NICOM, Cheetah Medical, Newton Center, MA) system based on a bioreactance method was used. DESIGN: Prospective, noninterventional study. SETTING: ICU at a large academic center. PATIENTS: Patients with new, undifferentiated shock, and vasopressor requirements despite fluid resuscitation were included. Patients with significant cardiac disease and conditions that precluded adequate passive leg raising were excluded. INTERVENTIONS: Carotid corrected flow time was measured via ultrasound before and after a passive leg raise maneuver. Predicted fluid responsiveness was defined as greater than 10% increase in stroke volume on noninvasive cardiac output monitoring following passive leg raise. Images and measurements were reanalyzed by a second, blinded physician. The accuracy of change in carotid corrected flow time to predict fluid responsiveness was evaluated using receiver operating characteristic analysis. MEASUREMENTS AND MAIN RESULTS: Seventy-seven subjects were enrolled with 54 (70.1%) classified as fluid responders by noninvasive cardiac output monitoring. The average change in carotid corrected flow time after passive leg raise for fluid responders was 14.1 ± 18.7 ms versus -4.0 ± 8 ms for nonresponders (p < 0.001). Receiver operating characteristic analysis demonstrated that change in carotid corrected flow time is an accurate predictor of fluid responsiveness status (area under the curve, 0.88; 95% CI, 0.80-0.96) and a 7 ms increase in carotid corrected flow time post passive leg raise was shown to have a 97% positive predictive value and 82% accuracy in detecting fluid responsiveness using noninvasive cardiac output monitoring as a reference standard. Mechanical ventilation, respiratory rate, and high positive end-expiratory pressure had no significant impact on test performance. Post hoc blinded evaluation of bedside acquired measurements demonstrated agreement between evaluators. CONCLUSIONS: Change in carotid corrected flow time can predict fluid responsiveness status after a passive leg raise maneuver. Using point-of-care ultrasound to assess change in carotid corrected flow time is an acceptable and reproducible method for noninvasive identification of fluid responsiveness in critically ill patients with undifferentiated shock.


Assuntos
Artérias Carótidas/diagnóstico por imagem , Hidratação/métodos , Hemodinâmica/fisiologia , Fluxo Sanguíneo Regional/fisiologia , Choque Séptico/diagnóstico por imagem , Idoso , Estado Terminal , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Monitorização Fisiológica/métodos , Estudos Prospectivos , Choque Séptico/fisiopatologia , Ultrassonografia Doppler/métodos
11.
BMJ Case Rep ; 17(1)2024 Jan 03.
Artigo em Inglês | MEDLINE | ID: mdl-38171639

RESUMO

Fingolimod is a sphingosine-1-phosphate receptor modulator approved as a disease-modifying therapy (DMT) for relapsing-remitting multiple sclerosis (MS). A woman in her 30s was treated with fingolimod for relapsing-remitting MS. After 7 years of treatment, she presented with non-productive cough, night sweats, breathlessness and unintentional weight loss. She had a negative interferon-gamma release assay (IGRA). A high-resolution CT thorax showed innumerable miliary opacities in both lungs. Bronchoalveolar lavage was positive for Mycobacterium tuberculosis complex PCR. An MRI head showed multiple small punctate contrast-enhancing lesions most typical for tuberculomas. We describe the first reported case of disseminated tuberculosis (TB) associated with fingolimod treatment. Patients who are receiving DMT must be closely observed for the development of opportunistic infections, and IGRA results should be interpreted with caution. Screening for latent TB prior to commencing fingolimod should be considered on an individual basis. The management of TB in MS patients on DMT requires an interdisciplinary approach.


Assuntos
Esclerose Múltipla Recidivante-Remitente , Esclerose Múltipla , Tuberculose , Feminino , Humanos , Cloridrato de Fingolimode/efeitos adversos , Esclerose Múltipla/tratamento farmacológico , Imunossupressores/efeitos adversos , Propilenoglicóis , Esfingosina , Esclerose Múltipla Recidivante-Remitente/tratamento farmacológico
12.
Heliyon ; 10(15): e35271, 2024 Aug 15.
Artigo em Inglês | MEDLINE | ID: mdl-39170205

RESUMO

Background: Biallelic variants in PARK7, which encodes protein-nucleic acid deglycase DJ-1, can cause early-onset Parkinson's disease (PD). Although many patients with PARK7 variants have been identified from European and Middle Eastern ethnic groups, there have been no reports in the Japanese population. Objectives: To determine the prevalence and clinical features of patients with PD harboring PARK7 variants in Japan. Methods: We performed a molecular genetic analysis of PD patients with PARK7 variants identified using comprehensive panel sequencing, to explore the details of variants. Moreover, clinical neurological features were investigated, including neuroimaging analyses. This study followed STROBE guidelines. Results: Four patients with biallelic rare variants of PARK7 were identified in the cohort. All four patients presented with levodopa-responsive parkinsonism, with an age at onset in the early 30s. Furthermore, two of the four patients had psychiatric complications. Dopamine transporter imaging revealed nigrostriatal pathway dysfunction. Conclusions: To our knowledge, this is the first report of Japanese patients with PARK7 variants. We identified a relatively low frequency of PARK7 variants in patients in Japan. As opposed to typical patients with sporadic PD, the identified patients developed the disease in their 30s and presented with a variety of non-motor symptoms and complications. Further studies are needed to identify the clinical features related to PARK7 variants in Japanese patients with PD, and to analyze the pathophysiology of how the variants identified in the present study might affect DJ-1 function.

13.
Cell Rep Med ; 5(4): 101479, 2024 Apr 16.
Artigo em Inglês | MEDLINE | ID: mdl-38518770

RESUMO

Immune checkpoint blockade (ICB) with PD-1/PD-L1 inhibition has revolutionized the treatment of non-small cell lung cancer (NSCLC). Durable responses, however, are observed only in a subpopulation of patients. Defective antigen presentation and an immunosuppressive tumor microenvironment (TME) can lead to deficient T cell recruitment and ICB resistance. We evaluate intratumoral (IT) vaccination with CXCL9- and CXCL10-engineered dendritic cells (CXCL9/10-DC) as a strategy to overcome resistance. IT CXCL9/10-DC leads to enhanced T cell infiltration and activation in the TME and tumor inhibition in murine NSCLC models. The antitumor efficacy of IT CXCL9/10-DC is dependent on CD4+ and CD8+ T cells, as well as CXCR3-dependent T cell trafficking from the lymph node. IT CXCL9/10-DC, in combination with ICB, overcomes resistance and establishes systemic tumor-specific immunity in murine models. These studies provide a mechanistic understanding of CXCL9/10-DC-mediated host immune activation and support clinical translation of IT CXCL9/10-DC to augment ICB efficacy in NSCLC.


Assuntos
Carcinoma Pulmonar de Células não Pequenas , Neoplasias Pulmonares , Humanos , Camundongos , Animais , Linfócitos T CD8-Positivos , Inibidores de Checkpoint Imunológico , Células Dendríticas , Microambiente Tumoral , Quimiocina CXCL9
14.
Biol Methods Protoc ; 9(1): bpae046, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38993523

RESUMO

Rapid and accessible testing was paramount in the management of the COVID-19 pandemic. Our university established KCL TEST: a SARS-CoV-2 asymptomatic testing programme that enabled sensitive and accessible PCR testing of SARS-CoV-2 RNA in saliva. Here, we describe our learnings and provide our blueprint for launching diagnostic laboratories, particularly in low-resource settings. Between December 2020 and July 2022, we performed 158277 PCRs for our staff, students, and their household contacts, free of charge. Our average turnaround time was 16 h and 37 min from user registration to result delivery. KCL TEST combined open-source automation and in-house non-commercial reagents, which allows for rapid implementation and repurposing. Importantly, our data parallel those of the UK Office for National Statistics, though we detected a lower positive rate and virtually no delta wave. Our observations strongly support regular asymptomatic community testing as an important measure for decreasing outbreaks and providing safe working spaces. Universities can therefore provide agile, resilient, and accurate testing that reflects the infection rate and trend of the general population. Our findings call for the early integration of academic institutions in pandemic preparedness, with capabilities to rapidly deploy highly skilled staff, as well as develop, test, and accommodate efficient low-cost pipelines.

16.
Semin Dial ; 26(2): 195-202, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23406283

RESUMO

New healthcare delivery models are needed to enhance the patient experience and improve quality of care for individuals with chronic conditions such as kidney disease. One potential avenue is to implement self-management strategies. There is growing evidence that self-management interventions help optimize various aspects of chronic disease management. With the increasing use of information technology (IT) in health care, chronic disease management programs are incorporating IT solutions to support patient self-management practices. IT solutions have the ability to promote key principles of self-management, namely education, empowerment, and collaboration. Positive clinical outcomes have been demonstrated for a number of chronic conditions when IT solutions were incorporated into self-management programs. There is a paucity of evidence for self-management in chronic kidney disease (CKD) patients. Furthermore, IT strategies have not been tested in this patient population to the same extent as other chronic conditions (e.g., diabetes, hypertension). Therefore, it is currently unknown if IT strategies will promote self-management behaviors and lead to improvements in overall patient care. We designed and developed an IT solution called My KidneyCare Centre to support self-management strategies for patients with CKD. In this review, we discuss the rationale and vision of incorporating an electronic self-management tool to support the care of patients with CKD.


Assuntos
Sistemas Computadorizados de Registros Médicos , Educação de Pacientes como Assunto , Insuficiência Renal Crônica/terapia , Autocuidado , Coleta de Dados/métodos , Gerenciamento Clínico , Grupos Focais , Humanos , Modelos Teóricos , Interface Usuário-Computador
17.
Ther Innov Regul Sci ; 57(1): 12-25, 2023 01.
Artigo em Inglês | MEDLINE | ID: mdl-36175790

RESUMO

PURPOSE: Asia Partnership Conference of Pharmaceutical Associations (APAC) promote regulatory agility of four important best practices i.e. reliance, digital platform, accepting electronic document and process integration. Dialogues and strong partnership witnessed reforms and efficiencies amidst the pandemic. In tracking the progress of regulatory agility, APAC identifies areas for improvement and recommends prioritizing these areas for change. METHODS: As one voice, 13 main industry associations under the umbrella of APAC sent joint letters to our National Regulatory Authorities (NRAs) with a call to maintain regulatory agility and consider new ways of working. Consequently, APAC surveyed its member associations to measure regulatory agilities implemented by the NRAs during 2020 and 2021 in view of the pandemic. RESULTS: This paper reports progress in implementing regulatory agility, e.g. the number of economies that can accept electronic Certificate of Pharmaceutical Products (eCPP) has reached 100% for the economies that require CPP and more than 90% can waive onsite inspection in the presence of Good Manufacturing Practice (GMP) certificate and/or inspection report. The paper also features the progress made in Malaysia, the Philippines, and the ASEAN (Association of South East Asian Nations) regional reliance initiative to reduce inefficiencies and duplications. CONCLUSIONS: We have demonstrated the power of working together to enable regulatory agilities and efficiencies. APAC will continue to track the progress of all economies including India within the areas for improvement prioritized and discussed in this paper. APAC is also committed to working with key stakeholders including our NRAs in Asia to sustain and enable a new era of innovation ushered in by COVID-19 to benefit patients.


Assuntos
COVID-19 , Pandemias , Humanos , Ásia , Comércio , Preparações Farmacêuticas
18.
Can J Ophthalmol ; 2023 Apr 03.
Artigo em Inglês | MEDLINE | ID: mdl-37023796

RESUMO

OBJECTIVE: To characterize patients referred for diabetic retinopathy (DR) screening in a unique multidisciplinary diabetes care clinic at a tertiary care centre. METHODS: A retrospective study was conducted involving patients who were referred to the Cardiac and Renal Endocrine Clinic at a tertiary care centre (University Health Network) for DR screening between April 2019-March 2020 and November 2020-August 2021. Patients' demographics; micro- and macrovascular disease measurements; visual acuity, intraocular pressure, fundus imaging, and optical coherence tomography results were collected and analyzed. RESULTS: Of the 64 patients who attended the clinic, 21 patients (33%) with type 2 diabetes had on-site DR screening. The remaining 43 patients had DR screening within 6 months of the appointment or were under ophthalmology care with annual screening visits elsewhere. Of the 21 patients who underwent retinopathy screening, 7 patients (33%) had DR: 4 had mild nonproliferative DR, 2 had moderate nonproliferative DR, 1 had proliferative DR, and 1 had macular edema. Patients with DR had a significantly longer diabetes duration than patients without DR (24.5 ± 10.2 years vs 12.5 ± 5.8 years; p = 0.0247). No significant differences were observed in glycemic control, blood pressure, lipid profiles, kidney function, visual acuity, or intraocular pressure. CONCLUSIONS: Our analysis suggests a potential benefit of integrated DR screening in patients with long-standing diabetes as part of a multidisciplinary diabetes care clinic to diagnose and manage DR. Future work is needed to further develop such clinics and investigate their long-term effect on patient outcomes.

19.
J Immunother Cancer ; 11(9)2023 09.
Artigo em Inglês | MEDLINE | ID: mdl-37730274

RESUMO

BACKGROUND: Despite recent advances in immunotherapy, many patients with non-small cell lung cancer (NSCLC) do not respond to immune checkpoint inhibitors (ICI). Resistance to ICI may be driven by suboptimal priming of antitumor T lymphocytes due to poor antigen presentation as well as their exclusion and impairment by the immunosuppressive tumor microenvironment (TME). In a recent phase I trial in patients with NSCLC, in situ vaccination (ISV) with dendritic cells engineered to secrete CCL21 (CCL21-DC), a chemokine that facilitates the recruitment of T cells and DC, promoted T lymphocyte tumor infiltration and PD-L1 upregulation. METHODS: Murine models of NSCLC with distinct driver mutations (KrasG12D/P53+/-/Lkb1-/- (KPL); KrasG12D/P53+/- (KP); and KrasG12D (K)) and varying tumor mutational burden were used to evaluate the efficacy of combination therapy with CCL21-DC ISV plus ICI. Comprehensive analyses of longitudinal preclinical samples by flow cytometry, single cell RNA-sequencing (scRNA-seq) and whole-exome sequencing were performed to assess mechanisms of combination therapy. RESULTS: ISV with CCL21-DC sensitized immune-resistant murine NSCLCs to ICI and led to the establishment of tumor-specific immune memory. Immunophenotyping revealed that CCL21-DC obliterated tumor-promoting neutrophils, promoted sustained infiltration of CD8 cytolytic and CD4 Th1 lymphocytes and enriched progenitor T cells in the TME. Addition of ICI to CCL21-DC further enhanced the expansion and effector function of T cells both locally and systemically. Longitudinal evaluation of tumor mutation profiles revealed that CCL21-DC plus ICI induced immunoediting of tumor subclones, consistent with the broadening of tumor-specific T cell responses. CONCLUSIONS: CCL21-DC ISV synergizes with anti-PD-1 to eradicate murine NSCLC. Our data support the clinical application of CCL21-DC ISV in combination with checkpoint inhibition for patients with NSCLC.


Assuntos
Carcinoma Pulmonar de Células não Pequenas , Neoplasias Pulmonares , Humanos , Animais , Camundongos , Carcinoma Pulmonar de Células não Pequenas/tratamento farmacológico , Proteínas Proto-Oncogênicas p21(ras) , Proteína Supressora de Tumor p53 , Neoplasias Pulmonares/tratamento farmacológico , Imunoterapia , Microambiente Tumoral , Quimiocina CCL21
20.
Clin Med Insights Circ Respir Pulm Med ; 16: 11795484221134451, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36419562

RESUMO

Background: Severe COVID-19-associated Acute Respiratory Distress Syndrome (ARDS) may warrant extracorporeal membrane oxygenation (ECMO). We evaluated the safety and physiologic changes in oxygenation and hemodynamic profile during ECMO, prone positioning, and the two modalities combined in patients receiving veno-venous (VV) ECMO. Methods: Cohort study of consecutive adult patients with COVID-19-associated ARDS requiring VV-ECMO, classified into three groups: ECMO support only; Prone positioning only; and Prone positioning during ECMO. We collected hemodynamic, respiratory and ventilation variables as follows: pre-treatment, 1, 6, and 24 h post-treatment, and documented treatment-related complications. On-treatment variables were compared with pre-treatment using one-sample paired t-test with Bonferroni correction. Results: Fourteen patients (mean age 48.1 [SD 9.3] years, male [100%]) received VV-ECMO. Of those, 10 patients had data during prone positioning alone and seven had data while proned on ECMO. While on ECMO, patients had improvement in oxygen saturation, PaO2/FiO2 ratio, and minute ventilation up to 24 h post-treatment. Vasopressor requirements increased with ECMO at 1 h and 24 h post-treatment. Prone positioning was not associated with clinically significant hemodynamic or respiratory changes, either alone or during ECMO support. All patients sustained deep tissue injuries, but only those on the face or chest were related to prone positioning. Three patients required cannula replacement. In-hospital mortality was 43%. Conclusions: VV-ECMO and prone positioning in patients with COVID-19 ARDS was overall well-tolerated; however, physiologic improvements were marginal, and patients sustained deep tissue injuries. Although this was a selected population with high mortality, our data call into question the benefits of these management modalities in this severe COVID-19 population.

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