Publications by authors named "Ross Macdonald"

Background: Offering medications for opioid use disorder (MOUD) in carceral settings significantly reduces overdose. However, it is unknown to what extent individuals in jails continue MOUD once they leave incarceration. We aimed to assess the relationship between in-jail MOUD and MOUD continuity in the month following release.

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Metformin is an orally effective anti-hyperglycemic drug that despite being introduced over 60 years ago is still utilized by an estimated 120 to 150 million people worldwide for the treatment of type 2 diabetes (T2D). Metformin is used off-label for the treatment of polycystic ovary syndrome (PCOS) and for pre-diabetes and weight loss. Metformin is a safe, inexpensive drug with side effects mostly limited to gastrointestinal issues.

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Corneal confocal microscopy (CCM) is an ophthalmic imaging technique that enables the identification of corneal nerve fibre degeneration and regeneration. To undertake a systematic review and meta-analysis of studies utilizing CCM to assess for corneal nerve regeneration after pharmacological and surgical interventions in patients with peripheral neuropathy. Databases (EMBASE [Ovid], PubMed, CENTRAL and Web of Science) were searched to summarize the evidence from randomized and non-randomized studies using CCM to detect corneal nerve regeneration after pharmacological and surgical interventions.

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Objectives: Clinical research professionals must be equipped with adequate training in sound scientific methods and appropriate ethics. In this study, we aimed to assess the current clinical research self-efficacy of researchers at Hamad Medical Corporation (HMC). We also evaluated the effects of training courses on researchers' self-efficacy.

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Background: Non-fatal overdose is a leading predictor of subsequent fatal overdose. For individuals who are incarcerated, the risk of experiencing an overdose is highest when transitioning from a correctional setting to the community. We assessed if enrollment in jail-based medications for opioid use disorder (MOUD) is associated with lower risk of non-fatal opioid overdoses after jail release among individuals with opioid use disorder (OUD).

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Introduction: There are scant data on implementation of large-scale direct-acting antiviral treatment for hepatitis C virus in jails in the U.S. New York City Health + Hospitals/Correctional Health Services aimed to scale up hepatitis C virus treatment in the New York City jail system.

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Background: Treatment with methadone and buprenorphine medications for opioid use disorder (MOUD) during incarceration may lead to better community re-entry, but evidence on these relationships have been mixed. We aimed to identify community re-entry patterns and examine the association between in-jail MOUD and a pattern of successful reentry defined by rare occurrence of reincarceration and preventable healthcare utilization.

Methods: Data came from a retrospective, observational cohort study of 6066 adults with opioid use disorder who were incarcerated in New York City jails and released to the community during 2011-14.

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Obsessive-compulsive disorder (OCD) is a debilitating mental health disorder characterized by intrusive thoughts (obsessions) and repetitive behaviors (compulsions). Dysbiosis, an imbalance in the gut microbial composition, has been associated with various health conditions, including mental health disorders, autism, and inflammatory diseases. While the exact mechanisms underlying OCD remain unclear, this review presents a growing body of evidence suggesting a potential link between dysbiosis and the multifaceted etiology of OCD, interacting with genetic, neurobiological, immunological, and environmental factors.

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The aim of this systematic review is to estimate: (i) the overall effect of blinding models on bias; (ii) the effect of each blinding model; and (iii) the effect of un-blinding on reviewer's accountability in biomedical research proposals. Systematic review of prospective or retrospective comparative studies that evaluated two or more peer review blinding models for biomedical research proposals/funding applications and reported outcomes related to peer review efficiency. Three studies that met the inclusion criteria were included in this review and assessed using the QualSyst tool by two authors.

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Background And Aims: Opioid overdose is a leading cause of death during the immediate time after release from jail or prison. Most jails in the United States do not provide methadone and buprenorphine treatment for opioid use disorder (MOUD), and research in estimating its impact in jail settings is limited. We aimed to test the hypothesis that in-jail MOUD is associated with lower overdose mortality risk post-release.

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Article Synopsis
  • Scientists are using a method called T cell receptor (TCR) sequencing to understand how the immune system responds to cancer.
  • A new AI tool called DeepTCR helps predict how well patients will respond to cancer treatments by analyzing specific parts of the TCR sequences.
  • The study finds that patients who don't respond to treatment have lots of T cells that should fight tumors, but these cells change a lot and don't work properly.
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Metformin was first used to treat type 2 diabetes in the late 1950s and in 2022 remains the first-choice drug used daily by approximately 150 million people. An accumulation of positive pre-clinical and clinical data has stimulated interest in re-purposing metformin to treat a variety of diseases including COVID-19. In polycystic ovary syndrome metformin improves insulin sensitivity.

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There are currently more adults age fifty-five or older incarcerated in the United States than ever before. Little is known about the epidemiology or health care needs of geriatric patients in jails, where the majority of the population is being held in pretrial detention. We performed a retrospective analysis of electronic health record data to characterize the demographics, health conditions, and health care use of people age fifty-five or older who were incarcerated in the New York City jail system between 2015 and 2019.

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Article Synopsis
  • - The CheckMate 214 trial showed that combining nivolumab and ipilimumab is more effective than sunitinib as a first-line treatment for advanced clear-cell renal cell carcinoma (RCC), but there’s a need to figure out which patients will benefit most from this combo treatment.
  • - Researchers explored various biomarkers, including proteins and genetic signatures, but found that those previously linked to other treatments did not predict survival outcomes for patients using nivolumab plus ipilimumab.
  • - The study identified a link between tumor inflammation and better progression-free survival, suggesting that understanding the tumor's inflammatory environment could lead to improved strategies for personalized treatment in RCC patients.
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Background: Soluble PD-L1 (sPD-L1) has been associated with worse prognosis in numerous solid tumors. We determined sPD-L1 levels before and during nivolumab treatment in two prospective clinical trials of metastatic clear cell renal cell carcinoma (RCC) and melanoma patients, and investigated its relationship to clinical factors, biomarkers, and outcome.

Methods: Using a new Single Molecule Array assay, serum sPD-L1 level were determined in RCC (CheckMate 009, n=91) and melanoma (CheckMate 038-Part 1, n=78) prior to, and at two time points on treatment.

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Background: Extended-release buprenorphine (XRB) offers a novel approach to sustained monthly treatment for people who use opioids in criminal justice settings (CJS). This study explores the experiences of adults receiving XRB as a jail-to-community treatment.

Methods And Findings: In-depth qualitative interviews were conducted among adult participants with opioid use disorder (OUD; n  = 16) who were recently released from NYC jails and maintained on XRB after switching from daily sublingual buprenorphine (SLB).

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Aims/introduction: Sodium-glucose cotransporter 2 inhibitors (SGLT-2i) improve glycemic control and weight, but might be associated with dehydration, hypotension and ketoacidosis, especially in patients with type 2 diabetes mellitus who fast during Ramadan. This meta-analysis evaluates the effects of Ramadan fasting on patients with type 2 diabetes mellitus treated with SGLT-2i.

Materials And Methods: A literature search was carried out in PubMed, Embase and the Cochrane Library.

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Importance: Extended-release buprenorphine (XRB), a monthly injectable long-acting opioid use disorder (OUD) treatment, has not been studied for use in corrections facilities.

Objective: To compare treatment retention following release from jail among adults receiving daily sublingual buprenorphine-naloxone (SLB) vs those receiving XRB.

Design, Setting, And Participants: This open-label, randomized comparative effectiveness study included 52 incarcerated adults in New York City observed for 8 weeks postrelease between June 2019 and May 2020.

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Introduction: Corneal confocal microscopy (CCM) is a rapid non-invasive ophthalmic imaging technique that identifies corneal nerve fiber damage. Small studies suggest that CCM could be used to assess patients with diabetic peripheral neuropathy (DPN).

Aim: To undertake a systematic review and meta-analysis assessing the diagnostic utility of CCM for sub-clinical DPN (DPN ) and established DPN (DPN ).

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Purpose: Combining anti-PD-1 + anti-CTLA-4 immune-checkpoint blockade (ICB) shows improved patient benefit, but it is associated with severe immune-related adverse events and exceedingly high cost. Therefore, there is a dire need to predict which patients respond to monotherapy and which require combination ICB treatment.

Experimental Design: In patient-derived melanoma xenografts (PDX), human tumor microenvironment (TME) cells were swiftly replaced by murine cells upon transplantation.

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Journal impact factors, publication charges and assessment of quality and accuracy of scientific research are critical for researchers, managers, funders, policy makers, and society. Editors and publishers compete for impact factor rankings, to demonstrate how important their journals are, and researchers strive to publish in perceived top journals, despite high publication and access charges. This raises questions of how top journals are identified, whether assessments of impacts are accurate and whether high publication charges borne by the research community are justified, bearing in mind that they also collectively provide free peer-review to the publishers.

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Objectives: People detained in correctional facilities are at high risk for infection with severe acute respiratory syndrome coronavirus 2, the virus that causes coronavirus disease 2019 (COVID-19). We described the epidemiology of the COVID-19 outbreak in a large urban jail system, including signs and symptoms at time of testing and risk factors for hospitalization.

Methods: This retrospective observational cohort study included all patients aged ≥18 years who were tested for COVID-19 during March 11-April 28, 2020, while in custody in the New York City jail system (N = 978).

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Background: Nivolumab is an immune checkpoint inhibitor targeting the programmed death-1 receptor that improves survival in a subset of patients with clear cell renal cell carcinoma (ccRCC). In contrast to other tumor types that respond to immunotherapy, factors such as programmed death ligand-1 (PD-L1) status and tumor mutational burden show limited predictive utility in ccRCC. To address this gap, we report here the first molecular characterization of nivolumab response using paired index lesions, before and during treatment of metastatic ccRCC.

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Article Synopsis
  • Sarcomatoid and rhabdoid renal cell carcinoma (RCC) are aggressive tumors that have not been well-defined in terms of their molecular and clinical properties.
  • Emerging research shows that immune checkpoint inhibitors (ICI) may be particularly effective against these tumors, although the reasons for this are not fully understood.
  • The study identifies unique molecular characteristics of S/R RCC, such as specific mutations and increased immune activity, which contribute to their aggressive nature and responsiveness to ICI treatments.
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