Publications by authors named "John Sloan"

Article Synopsis
  • * Current tests for measuring Lp(a) often assess total apo(a), which may not accurately reflect Lp(a) levels or the effects of new treatments.
  • * A new immunoassay developed for measuring Lp(a) particles showed better accuracy, indicating that muvalaplin's Lp(a)-lowering effects were previously underestimated by commercial tests, while lepodisiran's effects were consistent across both methods.
View Article and Find Full Text PDF

Enhance the Rapid Response System (RRS) in a free-standing acute rehabilitation hospital (ARH) by improving announcements, crash cart standardization and role assignments. Pre-intervention (PreIQ) and post-intervention questionnaires (PostIQ), conducted in English and utilizing a Likert scale, were distributed in-person to clinical staff, yielding a 100% response rate. The questionnaire underwent no prior testing.

View Article and Find Full Text PDF
Article Synopsis
  • * The study produced anti-siRNA polyclonal antibodies primarily targeting the N-acetylgalactosamine (GalNAc) component, which can serve as positive controls in immunogenicity assays for GalNAc-conjugated siRNAs.
  • * Additionally, anti-GalNAc monoclonal antibodies showed good sensitivity and drug tolerance, indicating their potential as alternative positive controls, aiding in the development of immunogenicity assays for siRNA therapeutics.
View Article and Find Full Text PDF

Venous thromboembolism (VTE) risk is increased in patients infected with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). A key question was whether increased intensity of anticoagulation would help prevent VTE and improve patient outcomes, including transfer to the intensive care unit (ICU) and mortality. At the start of the coronavirus disease-19 (COVID-19) pandemic, our institution, Boston Medical Center, instituted a VTE risk stratification protocol based on patients' initial D-dimer levels, medical history, and presence of thrombosis to determine whether they should receive standard-dose prophylaxis, high-dose prophylaxis, or therapeutic anticoagulation.

View Article and Find Full Text PDF

Objective: Estimate prevalence and identify correlates of self-reported access to a gun among college students.

Participants: Degree seeking students never serving in the military at 24 postsecondary institutions participating in ACHA-NCHA III during spring of 2020 and 2021 ( = 17,293) stratified by ciswomen, cismen, and transgender/gender nonconforming.

Methods: Independent variables included measures of individual-level risk behaviors and experiences including interpersonal violence, mental health issues, and current and lifetime substance use.

View Article and Find Full Text PDF

Patients with systemic light chain (AL) amyloidosis undergoing treatment with high-dose melphalan and autologous stem cell transplantation (HDM/SCT) may develop renal and cardiac toxicities potentially exacerbated by the co-solvent propylene glycol in conventional melphalan formulations. We investigated the safety and efficacy of propylene glycol-free melphalan (PGF-Mel) during HDM/SCT in patients with AL amyloidosis (ClinicalTrials.gov identifier NCT02994784).

View Article and Find Full Text PDF
Article Synopsis
  • There is little existing guidance on how to choose tyrosine kinase inhibitors (TKIs) for patients with short bowel syndrome (SBS), with factors like absorption issues, toxicity, and drug interactions needing careful consideration.
  • A 57-year-old man with SBS and recently diagnosed chronic myeloid leukemia (CML) was treated with dasatinib, starting at 100 mg daily after a thorough evaluation of his medical history and medications.
  • Following this treatment, the patient quickly responded well—showing complete hematological response in two weeks and major molecular response at three months—without experiencing any adverse effects, supporting the choice of dasatinib for such cases.
View Article and Find Full Text PDF

Background: Patients with cancer undergoing cytotoxic chemotherapy face an elevated risk of developing serious infection as a consequence of their treatment, which lowers their white blood cell count and, more specifically, their absolute neutrophil count. This condition is known as neutropenia. Neutropenia accompanied by a fever is referred to as febrile neutropenia, a common side effect of chemotherapy with a high mortality rate.

View Article and Find Full Text PDF

Human T cell lymphotropic virus types 1 and 2 (HTLV-1/2) are delta retroviruses. HTLV-1 may lead to complications, including adult T cell leukemia-lymphoma (ATLL) and HTLV-1-associated myelopathy. Immunosuppression may result in progression from an asymptomatic carrier state to ATLL.

View Article and Find Full Text PDF

We present a novel methodology to compare results between distinct immunogenicity assays, performed by two laboratories, for the same biotherapeutic. Human serum pools from clinical trials were generated to provide representative immunogenicity titers. Pools were evaluated at two laboratories in a blinded fashion to assess the effect of assay format and laboratory change on clinical interpretation of immunogenicity results.

View Article and Find Full Text PDF

Primary pulmonary extra-nodal marginal zone lymphoma of mucosa-associated lymphoid tissue (MALT lymphoma), also known as bronchus-associated lymphoid tissue (BALT lymphoma), is the most common primary pulmonary lymphoma but is rare (<1%) among all non-Hodgkin lymphomas and among pulmonary neoplasms in general. We herein report the case of a 59-year-old male who presented with stable exertional dyspnoea and persistent lung infiltrates who was referred to our hospital for further assessment. A computed tomography (CT)-guided core biopsy was performed showing a dense lymphoid infiltrate, with further testing revealing the diagnosis of pulmonary MALT lymphoma.

View Article and Find Full Text PDF

This special report was developed to communicate policy and procedures for free-standing acute inpatient rehabilitation hospitals (AIRHs) to protect patients and healthcare personnel and to prevent further spread of severe acute respiratory syndrome coronavirus 2. The recommended policies were developed in conjunction with the New Mexico Department of Health and hospital leadership. As we attain additional knowledge and experience during this pandemic, suggestions of best practice will continue to evolve for AIRHs.

View Article and Find Full Text PDF

Polyethylene glycol (PEG) represents an effective strategy to improve the pharmacokinetic profile of a molecule as it extends the biotherapeutic's half-life, masks immunogenic epitopes or modifies its distribution. The addition of one or multiple PEG moieties, in either linear or branched form, is known to carry the risk of potentially inducing an immunogenic response against PEG. The importance of accurately quantifying anti-PEG antibodies during a clinical study is well recognized and stems from the fact that anti-PEG antibodies have been shown to negatively impact the efficacy of the biotherapeutic that the PEG is coupled to.

View Article and Find Full Text PDF
Article Synopsis
  • A 38-year-old man with symptoms like fever, groin swelling, and anal bleeding was diagnosed with Fournier gangrene, which led to further investigation.
  • Initial tests indicated he had low blood counts and unusual cells in his blood, raising concerns for acute promyelocytic leukaemia (APML).
  • Treatment with All-trans retinoic acid (ATRA) and arsenic trioxide (ATO) resulted in complete remission, with no signs of APML after a month and complete healing of the wound in two months.
View Article and Find Full Text PDF

Background: As individuals age, they are more likely to experience increasing frailty and more frequent use of hospital services. First, we explored whether initiating home-based primary care in a frail homebound cohort, influenced hospital use. Second, we explored whether initiating regular home care support for personal care with usual primary care, in a second somewhat less frail cohort, influenced hospital use.

View Article and Find Full Text PDF

Background: Anemia and vitamin D deficiency are highly prevalent in critical illness, and vitamin D status has been associated with hemoglobin concentrations in epidemiologic studies. We examined the effect of high-dose vitamin D therapy on hemoglobin and hepcidin concentrations in critically ill adults.

Materials And Methods: Mechanically ventilated critically ill adults (N = 30) enrolled in a pilot double-blind, randomized, placebo-controlled trial of high-dose vitamin D (D ) were included in this analysis.

View Article and Find Full Text PDF

Rationale: Physical inactivity among patients with chronic obstructive pulmonary disease is associated with exacerbations requiring high-cost health care utilization including urgent, emergent, and hospital care.

Objectives: To examine the effectiveness of a behavioral lifestyle physical activity intervention combined with chronic obstructive pulmonary disease self-management education to prevent high-cost health care utilization.

Methods: This was an analysis of secondary outcomes of the Chronic Obstructive Pulmonary Disease Self-Management Activation Research Trial, a two-arm randomized trial of stable adult outpatients with chronic obstructive pulmonary disease recruited from primary care and pulmonary clinics.

View Article and Find Full Text PDF

Sclerostin (SOST), a glycoprotein primarily derived from osteocytes, is an important regulator of bone remodeling. Osteogenesis imperfecta (OI) is a heritable disorder of bone characterized by low bone mass, bone fragility, recurrent fractures, and bone deformities. Altered SOST-mediated signaling may have a role in pathogenesis of type I collagen-related OI; however, this has not been evaluated in humans.

View Article and Find Full Text PDF

Growth/differentiation factor 15 (GDF15), also known as MIC-1, is a distant member of the transforming growth factor-β (TGF-β) superfamily and has been implicated in various biological functions, including cancer cachexia, renal and heart failure, atherosclerosis and metabolism. A connection between GDF15 and body-weight regulation was initially suggested on the basis of an observation that increasing GDF15 levels in serum correlated with weight loss in individuals with advanced prostate cancer. In animal models, overexpression of GDF15 leads to a lean phenotype, hypophagia and other improvements in metabolic parameters, suggesting that recombinant GDF15 protein could potentially be used in the treatment of obesity and type 2 diabetes.

View Article and Find Full Text PDF

We used a web-based mixed methods survey (HowsYourHealth - Frail) to explore the health of frail older (78% age 80 or older) adults enrolled in a home-based primary care program in Vancouver, Canada. Sixty per cent of eligible respondents participated, representing over one quarter (92/350, 26.2%) of all individuals receiving the service.

View Article and Find Full Text PDF

Objective: New-onset diabetes after transplantation (NODAT) is a major complication in renal transplant recipients (RTRs). Cholesterol metabolism has been linked to diabetes development. Proprotein convertase subtilisin/kexin type 9 (PCSK9) is crucial in LDL receptor regulation.

View Article and Find Full Text PDF

Background: Hepcidin is considered the master regulator of iron homoeostasis. Novel hepcidin antagonists have recently been introduced as potential treatment for iron-restricted anaemia. Meanwhile, serum hepcidin has been shown to be positively associated with cardiovascular disease and inversely with acute kidney injury.

View Article and Find Full Text PDF

Aim: Immunogenicity testing of biotherapeutic drugs is a regulatory requirement. Herein, we describe a drug-tolerant assay for detecting neutralizing antibodies against a therapeutic antibody.

Results: Excess target of the therapeutic antibody was incorporated into the detection step of an affinity capture elution assay.

View Article and Find Full Text PDF