Biomarkers of biological aging in recipients of solid organ transplantation and clinical outcomes: A scoping review.

INTRODUCTION: Biological aging is the accumulation of cellular and molecular damage within an individual over time. The biological age of a donor organ is known to influence clinical outcomes of solid organ transplantation, including delayed graft function and frequency of rejection episodes. While much research has focused on the biological age of donor organs, the recipient's biological age may also influence transplantation outcomes. The aim of this scoping review was to identify and provide an overview of the existing evidence regarding biological aging in solid organ transplant recipients and the impact on patient outcomes post-transplant. METHODS: Literature searches were carried out on PubMed, Web of Science, Google Scholar, Embase and TRIP using the phrases 'solid organ transplant', 'cell senescence', 'cell aging' and 'outcomes', using boolean 'and/or' phrases and MeSH terms. Duplicates were removed and abstracts were reviewed by two independent reviewers. Full papers were then screened for inclusion by two reviewers. Data extraction was carried out using a standardised proforma agreed on prior to starting. RESULTS: 32 studies, including data on a total of 7760 patients, were identified for inclusion in this review; 23 relating to kidney transplant recipients, three to liver transplant, five to lung transplant and one to heart transplantation. A wide range of biomarkers of biological aging have been assessed in kidney transplant recipients, whereas studies of liver, lung and heart transplant have predominantly assessed recipient telomere length. The most robust associations with clinical outcomes are observed in kidney transplant recipients, possibly influenced by the larger number of studies and the use of a wider range of biomarkers of biological aging. In kidney transplant recipients reduced thymic function and accumulation of terminally differentiated T cell populations was associated with reduced risk of acute rejection but increased risk of infection and mortality. CONCLUSION: Studies to date on biological aging in transplant recipients have been heavily biased to kidney transplant recipients. The results from these studies suggest recipient biological age can influence clinical outcomes and future research is needed to prioritise robust biomarkers of biological aging in transplant recipients.

Meta-analysis of the cost-effectiveness of early versus delayed cholecystectomy for acute cholecystitis.

Background: Acute calculous cholecystitis (ACC) is a common disease across the world and is associated with significant socioeconomic costs. Although contemporary guidelines support the role of early laparoscopic cholecystectomy (ELC), there is significant variation among units adopting it as standard practice. There are many resource implications of providing a service whereby cholecystectomies for acute cholecystitis can be performed safely. Methods: Studies that incorporated an economic analysis comparing early with delayed laparoscopic cholecystectomy (DLC) for acute cholecystitis were identified by means of a systematic review. A meta-analysis was performed on those cost evaluations. The quality of economic valuations contained therein was evaluated using the Quality of Health Economic Studies (QHES) analysis score. Results: Six studies containing cost analyses were included in the meta-analysis with 1128 patients. The median healthcare cost of ELC versus DLC was €4400 and €6004 respectively. Five studies had adequate data for pooled analysis. The standardized mean difference between ELC and DLC was -2·18 (95 per cent c.i. -3·86 to -0·51; P = 0·011; I 2 = 98·7 per cent) in favour of ELC. The median QHES score for the included studies was 52·17 (range 41-72), indicating overall poor-to-fair quality. Conclusion: Economic evaluations within clinical trials favour ELC for ACC. The limited number and poor quality of economic evaluations are noteworthy.

Gun shot-101: an 8-year review of gunshot injuries in an Irish teaching hospital from a general surgical perspective.

BACKGROUND: Gun-related crime offences have increased in the Republic of Ireland steadily over the past number of years. Regional trauma units are witnessing unprecedented numbers of injuries in the Republic of Ireland with limited prior experience. AIMS: Eight-year retrospective study analysing demographic data, management and outcome of firearm-related injuries. RESULTS: Patients who experience gunshot injuries in this region are statistically likely to be young, male and unemployed with a single shotgun injury to an extremity. Post-operative survival rates of 100% for those who undergo an exploratory laparotomy. CONCLUSION: Ireland has comparable survival outcomes to other international centres with similar patient demographics due to timely and appropriate operative intervention. These results serve to provide a template for further patient management.

Implications of altered gastrointestinal motility in obesity.

The onset of obesity occurs as a result of an imbalance between nutrient consumption/absorption and energy expenditure. Gastrointestinal (GI) motility plays a critical role in the rate of consumption of foods, digestion, and absorption of nutrients. Various segments of the GI tract coordinate in a complex yet precise way, to control the process of food consumption, digestion, and absorption of nutrients. GI motility not only regulates the rates at which nutrients are processed and absorbed in the gut, but also, via mechanical and neurohormonal methods, participates in the control of appetite and satiety. Altered GI motility has frequently been observed in obese patients, the significance of which is incompletely understood. However, these alterations can be considered as potential contributing factors in the development and maintenance of obesity and changed eating behavior. Therapies aimed at regulating or counteracting the observed changes in GI motility are being actively explored and applied clinically in the management of obese patients.

Phenytoin and phenobarbital concentrations in serum: a comparison of Ames Seralyzer with GLC, TDX, and EMIT.

A recently developed system for measuring antiepileptic drug concentrations was evaluated for phenytoin and phenobarbital. The apoenzyme reactive immunoassay system was compared with gas-liquid chromatography, EMIT, and TDX systems. Comparisons were performed with control specimens and with sera obtained from patients at three facilities. Precision for all methods was similar, with within-run and between-run coefficients of variation generally 5%. The accuracy of all methods was acceptable, but bias was present in some. However, measurements obtained by a nontechnical person (physician) in a clinical setting were sometimes inaccurate.