Radiocarbon analysis reveals that vegetation facilitates the release of old methane in a temperate raised bog

Peatlands have accumulated vast quantities of organic carbon over thousands of years but it is unclear how these sensitive ecosystems will respond to future climate change. If emissions of methane from peatlands increase, then they may contribute increasingly towards climatic warming due to the higher greenhouse warming potential of this gas. We investigated the radiocarbon concentration of methane emissions from a temperate bog over 1.5 years, which we supported with measurements of the surface flux of methane and carbon dioxide. The radiocarbon content of methane emissions varied greatly, from modern (i.e. fixed from the atmosphere within recent decades) to ~ 1400 years BP. Flux rates of methane were spatially and temporally highly variable. A vegetation clipping experiment showed that plants had a great influence on the carbon isotope composition and flux of methane emitted from the peat surface, consistent with earlier studies showing the key role of plants in peatland methane emissions. When plants were absent, emission rates were 70–94% lower and the radiocarbon age of methane emissions was much younger and less variable. Our radiocarbon measurements show that at this peatland, plant-associated methane emissions contain carbon originally fixed from the atmosphere up to hundreds of years earlier, consistent with a contribution from plant mediated transport of methane sourced from sub-surface layers

The development and validation of the LIMPRINT methodology

[Paper two of the LIMPRINT supplement. Lymphatic Research and Biology Supplement. June 2017

The impact of early-years provision in Children's Centres (EPICC) on child cognitive and socio-emotional development: study protocol for a randomised controlled trial.

BACKGROUND: There are marked disparities between pre-school children in key skills affecting school readiness, disparities that commonly persist and influence children's later academic achievements, employment, and adjustment. Much of this disparity is linked to socio-economic disadvantage and its impact on the home learning environment. Children's Centres are an ideal context in which to implement and evaluate programmes to address this problem. They principally serve the 30% worst areas on the Indices of Deprivation Affecting Children, providing for families from the antenatal period up to age 5 years, aiming to promote parenting skills and provide care for children. METHODS: We are conducting a randomised controlled trial, based in Children Centres, to evaluate a parenting intervention for caregivers of children between 28 and 45 months of age. The intervention provides training to parents in dialogic book-sharing. The training is run by a facilitator who sees parents in small groups, on a weekly basis over 7 weeks. The study is a cluster randomised controlled trial. Twelve of the Children's Centres in the town of Reading in the UK have been randomly assigned to an index or control condition. The primary outcome is child cognition (language, attention, and executive function); and secondary outcomes are child social development, behaviour problems, and emotion regulation, parenting during book-sharing and problem solving and parental child behaviour management strategies. Data are collected at baseline, post-intervention and 4-6 months post-intervention. DISCUSSION: The Impact of Early-years Provision in Children's Centres trial (EPICC) aims to evaluate the impact of an early parenting intervention on several key risk factors for compromised child development, including aspects of parenting and child cognition, social development, behaviour problems and emotion regulation. The study is being carried out in Children's Centres, which largely serve the most disadvantaged families in the UK. Since the intervention is brief and, with modest levels of training, readily deliverable within Children's Centres and similar early childcare provision centres, demonstration that it is of benefit to child cognition, socio-emotional development and behaviour would be important. TRIAL REGISTRATION: ISRCTN Registry, ISRCTN28513611 . Registered on 28 March 2017. This is version 1 of the protocol for the EPICC trial

Increased Prevalence of Celiac Disease in Patients with Unexplained Infertility in the United States: A Prospective Study

Celiac disease is an autoimmune disorder which can present with a variety of non-gastrointestinal manifestations. In women, it may manifest with an assortment of gynecologic or obstetric disorders. Some reports have linked female infertility with undiagnosed celiac disease. Though there are a number of studies from Europe and the Middle East, only two prior American studies have examined the prevalence of "silent" celiac disease in a female infertility population. We prospectively performed serologic screening for celiac disease in 188 infertile women (ages 25–39). While we did not demonstrate an increased prevalence of celiac disease in our overall infertile female population, we were able to detect a significantly increased prevalence (5.9%) of undiagnosed celiac disease among women presenting with unexplained infertility (n=51). Our findings suggest the importance of screening infertile female patients, particularly those with unexplained infertility, for celiac disease

LIMPRINT in Australia

Background and study objective: Australia was one of nine participating countries in the epidemiology Phase II LIMPRINT project to determine the number of people with chronic oedema in local health services. Methods and results: Data collection occurred through questionnaire-based interviews and clinical assessment with provided LIMPRINT tools. Four different types of services across three states in Australia participated. A total of 222 adults participated with an age range from 22 to 102 years, and 60% were female. Site 1 included three residential care facilities (54% of participants had swelling), site 2 was community delivered aged care services (24% of participants had swelling), site 3 was a hospital setting (facility-based prevalence study) (28% of participants had swelling) and site 4 was a wound treatment centre (specific patient population) (100% of participants had swelling). Of those with chronic oedema or secondary lymphoedema 93% were not related to cancer, the lower limbs were affected in 51% of cases and 18% of participants with swelling reported one or more episodes of cellulitis in the previous year. Wounds were identified in 47% (n=105) of all participants with more than half of those with wounds coming from the dedicated wound clinic. Leg/foot ulcer was the most common type of wound (65% n=68). Conclusion: Distances between services, lack of specialised services and various state funding models contribute to inequities in CO treatment. Understanding the high number of non-cancer related chronic oedema presentations will assist health services to provide timely, effective care and improve referral pathways

LIMPRINT: the UK experience - subjective control of swelling in patients attending specialist lymphedema services

Background and study design: This study was undertaken as part of the UK LIMPRINT international study to determine the number of people with chronic oedema and its impact on health services. Overall 7436 with chronic oedema (CO) were recruited in the main UK study from a range of health settings. Methods and results: Subjective control of arm and leg chronic oedema (CO) was defined for patients attending three Lymphoedema services in the UK. Of the total available in the UK dataset 5165 (69.4%)/ 7436(100%) of participants were included. Reasons for exclusions included the following: lack of information (1669), having both arm and leg swelling (272), lack of description of control (5) and professional inability to decide whether CO was controlled (325). Arm swelling occurred in 953 (18.5%), with leg CO in 4212 (81.5%). Poor control was found in 1430 (27.7%) and good control in 3735 (72.3%). Control of arm swelling was worse in men and control increased overall in those aged over 45 years. In contrast control of CO worsened in those with leg CO with increasing age and multiple co-morbidities. Obesity and cellulitis, particularly an episode in the last year were associated with poor control. Independent risk factors for arm CO were obesity, neurological disease and cellulitis in the last year and for leg CO: obesity, poor mobility, heart disease, presence of a wound, cellulitis in the last year and duration of swelling. Conclusion: Control of CO within specialised centres is complex due to sociodemographic and clinical comorbidities

Estimation of the prevalence of lymphoedema/chronic oedema in acute hospital in-patients

Background: To estimate the prevalence of lymphoedema/chronic oedema and wounds in acute hospital in-patients in 5 different countries. Method: A point-prevalence study was carried out during working day periods in six general hospitals in four countries (Denmark, France, United Kingdom, Australia) and one hospital oncology in-patient unit in one other country (Ireland). The study used validated clinical tools for the assessment and collection of data. Data were collected by expert clinicians through interviews and physical examination of the patients present in the wards. Results: A total of 1905 patients could be included and investigated among the 3041 total bed occupancy in the seven hospitals. Lymphoedema/chronic oedema was present in 723 of them (38%). Main risk factors associated with chronic oedema were age, morbid obesity and heart failure as well as chair bound immobility and neurological deficiency. History of cellulitis was frequent in patients with chronic oedema and wounds (24.8%), chronic oedema alone (14.1%) as compared to the 1.5% prevalence in patients without chronic oedema. Conclusion: Lymphoedema/chronic oedema is very frequent in patients hospitalized in hospital acute wards. It is strongly associated with obesity, venous insufficiency and heart failure. Our results strongly suggest a hidden health care burden and cost linked to chronic oedema independently of chronic wounds

The prevalence and functional impact of chronic edema and lymphedema in Japan: LIMPRINT study

Background: This was a part of LIMPRINT (Lymphoedema IMpact and PRevalence – INTernational), an international study aimed at capturing the size and impact of lymphedema and chronic edema in different countries and health services across the world. The purpose of this study was to clarify the prevalence and the impact of chronic edema in Japan. Methods and Results: This was a two-phase facility-based study to determine the prevalence and functional impact of chronic edema in the adult population in Japan between 2014 and 2015. The prevalence study involved a university hospital, an acute community hospital, and a long-term medical facility. The impact study involved 6 facilities, including two outpatient clinics in acute care hospitals (one led by a physician and the other led by a nurse), inpatient wards in two acute care hospitals, and two nursing home/long-term care facilities. Various questionnaires and clinical assessments were used to gather patient demographic data and assess the functional impact of chronic edema. The results showed that: chronic edema was much more prevalent in the long-term care facility than in acute care hospitals; cellulitis episodes occurred in approximately 50% of cases in the gynecologist-led outpatient clinic, even though >80.0% of patients received standard management for edema; edema was found in the trunk region, including the buttock, abdomen, and chest-breast areas, in addition to the upper and lower limbs; and subjective satisfaction with edema control was low, even though the quality of life scores were good. Conclusions: The prevalence of chronic edema varied according to the facility type, ranging from 5.0% to 66.1%. The edema was located in all body parts, including the trunk region. Subjective satisfaction with control of edema was poor, while general quality of life was good. This large health care issue needs more attention

LIMPRINT study - the Turkish experience

Background: Lymphedema and chronic oedema is a major healthcare problem in both developed and non-developed countries The LIMPRINT study is an international health service based study to determine the prevalence and functional impact in adult populations of member countries of the International Lymphoedema Framework (ILF). Methods: 1051 patients from 8 centers in Turkey were recruited using the LIMPRINT study protocol. Data were collected using the core and module tools which assess the demographic and clinical properties as well as disability and QoL. Results: Most of the Turkish patients were recruited from specialist lymphedema services and were found to be female, housewives and having secondary lymphedema due to cancer treatment. The duration of lymphedema was commonly less than 5 years and most of them had ISL Grade 2 lymphedema. Cellulitis, infection and wounds were uncommon. The majority of patients did not get any treatment or advice before. Most of the patients had impaired QoL and decreased functionality, but psychological support was neglected. Although most had social health security access to Lymphedema centres nevertheless access seemed difficult due to distance and cost. Conclusion: The study has shown the current status and characteristics of lymphedema patients, treatment conditions, the unmet need for the diagnosis and treatment as well as burden of the disease in both patients and families in Turkey. National health policies are needed for the prevention, diagnosis and treatment in Turkey that utilise this informative data