Publications by authors named "Helen Lunt"

Obesity and diabetes are known to negatively affect vitamin C status. However, whether the presence of diabetes, in addition to obesity, contributes an additional impact on vitamin C status is currently uncertain. In a cohort of 152 adults living with obesity, we assessed metabolic and nutrient parameters in participants without diabetes (n = 92), and with prediabetes (n = 22) and type 2 diabetes mellitus (T2DM; n = 35).

View Article and Find Full Text PDF

Introduction Regular diabetic foot checks, at least annually, are important for early identification of risk factors and prevention of ulceration and amputation. To ensure this, most general practices in Aotearoa New Zealand (NZ) offer free annual diabetes reviews (ADRs) which include a comprehensive foot evaluation. However, attendance rates at these ADRs are low.

View Article and Find Full Text PDF

Vitamin C is an essential enzyme cofactor and antioxidant with pleiotropic roles in human physiology. Circulating vitamin C concentrations are lower in people with diabetes mellitus, suggesting a higher dietary requirement for the vitamin. We interrogated the NHANES 2017-2018 and EPIC-Norfolk datasets to compare vitamin C requirements between those with and without diabetes mellitus using dose-concentration relationships fitted with sigmoidal (four-parameter logistic) curves.

View Article and Find Full Text PDF

Background: Polycystic ovary syndrome (PCOS) is a heterogeneous condition that affects 4% to 21% of people with ovaries. Inaccessibility or dissatisfaction with clinical treatment for PCOS has led to some individuals with the condition discussing their experiences in specialized web-based forums.

Objective: This study explores the feasibility of using such web-based forums for clinical research purposes by gathering and analyzing laboratory test results posted in an active PCOS forum, specifically the PCOS subreddit hosted on Reddit.

View Article and Find Full Text PDF

Background: Hypovitaminosis C has negative health consequences. People with diabetes and hypovitaminosis C may fail to conserve vitamin C in the urine, thereby displaying evidence of inappropriate renal leak of vitamin C. This study describes the relationship between plasma and urinary vitamin C in diabetes, with a focus on the clinical characteristics of participants with renal leak.

View Article and Find Full Text PDF

Polycystic ovary syndrome (PCOS) affects up to 20% of women but remains poorly understood. It is a heterogeneous condition with many potential comorbidities. This review offers an overview of the dysregulation of the reproductive and metabolic systems associated with PCOS.

View Article and Find Full Text PDF

Diabetes mellitus is a chronic metabolic disorder and is associated with depleted vitamin C status. The underlying aetiologies and pathogeneses responsible for this association are poorly understood. This retrospective study explored the vitamin C status of 136 adult outpatients with types 1 and 2 diabetes mellitus (T1DM/T2DM), with a focus on indices of renal function and metabolic health, including body weight.

View Article and Find Full Text PDF

Aims: Liver cirrhosis increases the risk of developing dysglycaemia (pre-diabetes and diabetes), thus people with cirrhosis should undergo regular screening for dysglycaemia. The utility of screening using the laboratory glycated haemoglobin (HbA ) test has been questioned in this setting. This study examines the relationship between different potential screening modalities: 75 g oral glucose tolerance test (OGTT) and HbA , using continuous glucose monitoring (CGM) as a comparator.

View Article and Find Full Text PDF

Background: The National Health Service spends £170 million on blood glucose monitoring (BGM) strips each year and there are pressures to use cheaper less accurate strips. Technology is also being used to increase test frequency with less focus on accuracy.Previous modeling/real-world data analysis highlighted that actual blood glucose variability can be more than twice blood glucose meter reported variability (BGMV).

View Article and Find Full Text PDF

Internationally, the frequency of emergencies and disasters affecting the built environment is increasing. Clinical trials sites that experience an event that affects their clinical trials research infrastructure and site functionality, may find their ability to follow optimal clinical trials conduct is compromised. There is however minimal published information on how clinical trials sites should best undertake emergency planning and develop resilience.

View Article and Find Full Text PDF

Background: Chronic renal inflammation and fibrosis are common sequelae in diabetes mellitus (DM) and are major causes of premature mortality. Although upregulation of expression occurs in response to renal inflammation in experimental animals, nothing is known of the molecular forms of C-type natriuretic peptide (CNP) products in urine of people with DM or links with renal function.

Methods: ProCNP products in urine were characterized with HPLC and a range of antisera directed to specific epitopes of amino-terminal proCNP (NTproCNP).

View Article and Find Full Text PDF

The delivery of healthcare, which includes the informed consent process, is moving to a digital environment. This change in informed consent delivery will be associated with opportunities, risks and also unintentional consequences. Physicians are well placed to contribute to the ongoing dialogue about what is needed to make the informed consent process fit for purpose, in the digital age.

View Article and Find Full Text PDF

Unlabelled: An adolescent with type 1 diabetes and a history of self-harm, which included intentional overdoses and insulin omission, presented with an insulin degludec overdose. She had been commenced on the ultra-long-acting insulin, degludec, with the aim of reducing ketoacidosis episodes in response to intermittent refusal to take insulin. Insulin degludec was administered under supervision as an outpatient.

View Article and Find Full Text PDF

Background: Many governments and insurers are driving down the cost of medical devices, including glucose meters, by the central management of purchasing decisions. We report patients' responses to an "enforced" change in brand of glucose meter, one year after the introduction of a national sole supplier arrangement for funded glucose meters and strips.

Method: Specialist diabetes clinic attendees from two geographical locations completed a questionnaire one year after the final meter changeover date.

View Article and Find Full Text PDF

Introduction: Delayed separation of red cells from plasma causes pre analytical glucose loss, which in turn results in an under-diagnosis of GDM (gestational diabetes) based on the OGTT (oral glucose tolerance test). In silico investigations may help laboratory decision making, when exploring pragmatic improvements to sample processing.

Methods: Late pregnancy 0, 1 and 2h 75g OGTT values were obtained from two distinct populations of pregnant women: 1.

View Article and Find Full Text PDF

Objectives: Blood collection tubes containing citrate lower pH, thereby inhibiting glycolysis. When compared to other additives, they introduce an over-estimation in measured glucose. This study explored this over-estimation across a range of glucose values.

View Article and Find Full Text PDF