Publications by authors named "John Ross"

Auxin was one of the first plant hormones to be identified, but we are still discovering the roles of this “master” hormone. Here we discuss new evidence that links auxin with the synthesis and accumulation of one of humanity’s staple food ingredients, starch.

View Article and Find Full Text PDF

Objective: We report the 6-month outcomes of the Ark Cannulation Trial (ACT) I early feasibility study. This investigation examined the Ark as a potential innovative access tool for overcoming cannulation-related challenges and improving arteriovenous fistula (AVF) dependent hemodialysis through targeted cannulation.

Methods: During this first-in-human, interventional, prospective, single arm, single site investigation, 13 patients were treated.

View Article and Find Full Text PDF

Background: Despite the prevalence and challenge of Alzheimer's disease and related dementias, glimmers of hope arise during lucid moments. Caregivers, often burdened, play a crucial role. The study explored emotional responses to witnessed episodes of unexpected lucidity in deeply forgetful people, aiming to highlight the significance and varying reactions, especially among caregivers of this population.

View Article and Find Full Text PDF

Pyrolysis has been identified as a possible thermal treatment process for reducing perfluoroalkyl and polyfluoroalkyl substances (PFAS) from wastewater solids, though off-gas from the pyrolysis unit can still be a source of PFAS emissions. In this work, the fate of PFAS through a laboratory-scale pyrolysis unit coupled with a thermal oxidizer for treatment of off-gasses is documented. Between 91.

View Article and Find Full Text PDF

Objective: The Ark is a 3-D printed titanium device designed to be implanted around the draining vein of an arteriovenous fistula (AVF) to facilitate vascular access. The purpose of this study was to assess AVF maturation after Ark implantation in a large animal model.

Methodology: End-to-side AVFs were created between the carotid artery and jugular vein in nine pygmy goats that included three control (AVF only) and six experimental (AVF and Ark device) animals.

View Article and Find Full Text PDF
Article Synopsis
  • The concept of "venous outflow stenosis" is better understood as "inflow-outflow imbalance," where the outflow capacity of arteriovenous (AV) access can't adequately handle the blood inflow volume (Qa) without increased pressure.
  • This imbalance leads to higher outflow resistance and intraluminal pressure, causing various clinical issues that impact patient health.
  • The authors suggest that assessing access flow is crucial for treatment planning, advocating for a dual treatment strategy of angioplasty for low or normal Qa cases and flow reduction for those with excessive Qa.
View Article and Find Full Text PDF

Background: At the beginning of the COVID-19 pandemic fears of severe disruptions to family planning (FP) and access to services abounded. This paper uses a unique data source, a special Supplement added to the 2021 round of the National Composite Index for Family Planning (NCIFP), to assess in depth the resilience of FP programs in the face of the COVID-19 pandemic across 70 countries spanning six regions.

Methods: The 2021 NCIFP included 961 key informants who were asked questions to assess interference in the countries' ability to achieve objectives, ability to maintain commitment to FP, and availability of information and services.

View Article and Find Full Text PDF

Background: Preventative strategies that minimize hemodialysis access complications remain limited.

Objective: This study aimed to address this gap by developing a Caprine cannulation model to investigate the impact of repeated cannulations on vascular access patency rates.

Research Design And Measures: In this pilot study, a meta-analysis was conducted using experimental control data from four trials to explore the impact of Caprine breed (independent variable) on the dependent variables that affect hemodialysis cannulation, including AVF growth, AVF depth, and flow rate.

View Article and Find Full Text PDF

Unlabelled: Antigen-based rapid diagnostic tests (Ag-RDTs) were widely deployed to enhance SARS-CoV-2 testing capacity during the COVID-19 pandemic. Consistent with national guidance for low prevalence settings, positive Ag-RDTs were confirmed using nucleic acid amplification tests (NAATs) to avoid false positive results. However, increasing demands for positive Ag-RDT confirmation competed with other testing priorities in clinical laboratories.

View Article and Find Full Text PDF

Tetrachlorvinphos (TCVP) is the pesticidal active ingredient found in some flea and tick collars for dogs and cats. Recent studies sponsored by The Hartz Mountain Corporation, confirm the safety of TCVP as an active ingredient in pet collars. Based upon data from these new studies and results previously relied upon by the U.

View Article and Find Full Text PDF
Article Synopsis
  • Septic arthritis of the spinal facet joints is gaining recognition, especially with advancements in MRI, but its characteristics and treatment options remain unclear.
  • A review of 101 past cases and 16 new cases revealed that most patients experienced fever and back or neck pain, with many showing signs of bacteremia and abscesses.
  • Despite complications like abscesses, the prognosis is generally positive, with a 98% survival rate and minimal long-term neurological issues.
View Article and Find Full Text PDF

Perfluoroalkyl and polyfluoroalkyl substances (PFAS) are an emerging issue in wastewater treatment. High-temperature thermal processes, incineration being time-tested, offer the opportunity to destroy and change the composition of PFAS. The fate of PFAS has been documented through wastewater sludge incinerators, including a multiple hearth furnace (MHF) and a fluidized bed furnace (FBF).

View Article and Find Full Text PDF

Background: Even in severe states of Alzheimer's disease and related dementias (ADRD), accounts of an unexpected or paradoxical return of awareness and lucidity have been reported in some patients, documented formally, and studied.

Objective: A scoping review was undertaken to survey the literature on the topic.

Methods: Five databases were searched using pertinent search terms.

View Article and Find Full Text PDF

In common with other plant species, the garden pea () produces the auxin indole-3-acetic acid (IAA) from tryptophan via a single intermediate, indole-3-pyruvic acid (IPyA). IPyA is converted to IAA by PsYUC1, also known as Crispoid (Crd). Here, we extend our understanding of the developmental processes affected by the gene by examining the phenotypic effects of gene mutations on leaves, flowers, and roots.

View Article and Find Full Text PDF

Introduction: Inequities in reproductive health are widespread, and periodic surveys can trace trends in inequities to guide policies and program implementation.

Methods: We examined National Composite Index for Family Planning surveys from 2017 and 2021 that assessed inequities in access to 7 contraceptive methods and traced patterns of discrimination involving 5 subgroups in low- and middle-income countries. These surveys use 10-25 informants in each country who are knowledgeable at the national level.

View Article and Find Full Text PDF

Tetrachlorvinphos (TCVP) is the pesticidal active ingredient in some collars for dogs and cats. The objective of this study was to provide a refined estimate of dermal penetration of TCVP in humans using predictions as well as and data. The dermal absorption of TCVP was previously studied in the rat and shown to be saturable, ranging from 21.

View Article and Find Full Text PDF

Introduction: The traditional sutured venous anastomosis used during arteriovenous graft implantation is associated with a high incidence of subsequent stenosis that is attributed to neointimal hyperplasia. Hyperplasia results from multiple factors, including hemodynamic abnormalities and vessel trauma during implantation. A novel anastomotic connector device was designed to provide an alternative, less traumatic, endovascular venous anastomosis that may ameliorate the clinical challenges associated with a sutured anastomosis.

View Article and Find Full Text PDF

The geographic range of blastomycosis is thought to include New England, but documentation is sparse. We report 5 cases of infection with that were likely acquired in New England between 2011 and 2021. Our experience suggests that chart coding for the diagnosis of blastomycosis is imprecise and that mandatory reporting might help resolve uncertainties about the prevalence and extent of blastomycosis.

View Article and Find Full Text PDF

Background: Method mix - the percent distribution of contraceptive use by method among contraceptive users - reflects both client choice of method and method availability. In a country where clients have access to a wide range of methods at an affordable price, method mix is a strong proxy for method choice. In contrast, where access is limited by numerous factors - method availability, cost, or provider attitudes - method mix may not capture method choice well.

View Article and Find Full Text PDF

Two hundred years after the birth of Gregor Mendel, it is an appropriate time to reflect on recent developments in the discipline of genetics, particularly advances relating to the prescient friar's model species, the garden pea (Pisum sativum L.). Mendel's study of seven characteristics established the laws of segregation and independent assortment.

View Article and Find Full Text PDF

In this study, we focus on glass ceiling perceptions, characterized by women's subjective feelings about their ability to move upward in their organization. Drawing on social information processing and hope theory, we propose that glass ceiling perceptions decrease women's citizenship behaviors and increase their turnover intentions by draining their hope in the workplace. Moreover, we suggest that the strength of the association between glass ceiling perceptions, drained hope in the workplace, and these two outcomes is conditional upon women's perceptions of their work-family conflict.

View Article and Find Full Text PDF

Mycobacterium abscessus is an emerging pathogen of concern in cystic fibrosis and immunocompromised patients and is considered one of the most drug-resistant mycobacteria. The majority of clinical Mycobacterium abscessus isolates carry 1 or more prophages that are hypothesized to contribute to virulence and bacterial fitness. The prophage McProf was identified in the genome of the Bergey strain of Mycobacterium chelonae and is distinct from previously described prophages of Mycobacterium abscessus.

View Article and Find Full Text PDF

Antigen-based rapid diagnostic tests (Ag-RDTs) have been widely used for the detection of SARS-CoV-2 during the coronavirus disease 2019 (COVID-19) pandemic. In settings of low disease prevalence, such as asymptomatic community testing, national guidelines recommend confirmation of positive Ag-RDT results with a nucleic acid amplification test (NAAT). This often requires patients to be recalled for repeat specimen recollection and subsequent testing in reference laboratories.

View Article and Find Full Text PDF

Purpose: To present the 12-month outcomes of the IN.PACT AV Access Study, a prospective, single-blind trial enrolling participants with obstructive de novo or restenotic native upper extremity arteriovenous dialysis fistula lesions treated with a drug-coated balloon (DCB) or percutaneous transluminal angioplasty (PTA).

Materials And Methods: After successful high-pressure PTA, participants at 29 international sites were randomized 1:1 to treatment with an IN.

View Article and Find Full Text PDF

A PHP Error was encountered

Severity: Warning

Message: fopen(/var/lib/php/sessions/ci_sessionesfsopqkfjjtm6c0hsrs004p3pua3ikp): Failed to open stream: No space left on device

Filename: drivers/Session_files_driver.php

Line Number: 177

Backtrace:

File: /var/www/html/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: session_start(): Failed to read session data: user (path: /var/lib/php/sessions)

Filename: Session/Session.php

Line Number: 137

Backtrace:

File: /var/www/html/index.php
Line: 316
Function: require_once