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Dialysis has revolutionised the management of End Stage Kidney Disease (ESKD), but the benefits of this invasive, demanding treatment may not be clear-cut for elderly, frail patients with other serious comorbidities. University of Hertfordshire and East and North Hertfordshire NHS Trust researchers have led the development of Conservative Management, an alternative to dialysis for some patients, providing multidisciplinary support and careful symptomatic management until death. The research shows that quality of life is maintained, survival may not be significantly compromised, and preferred place of death is more often achieved than for counterparts on dialysis. Conservative Management programmes have been adopted across the UK and elsewhere, influencing the care of many patients.
Following research carried out at Newcastle, a new anticoagulant is used in 12 of the 14 paediatric kidney units in the UK and Ireland. Substantial distress and delay to therapy can be caused to children undergoing haemodialysis when the central venous lines (CVLs), by which their treatment is delivered, are blocked by blood clots. Our research has shown that preventative use of a new anti-coagulant, alteplase (also known as Rt-PA), is much more successful than the traditional agent, heparin, in preventing blockages. The clinical trial which established the superiority of alteplase required a novel form of optimal crossover design. In one hospital, the annual probability of CVL replacement due to thrombosis was 0.7 prior to our work. During the reporting period, no lines have had to be replaced because of thrombosis. This represents a remarkable reduction in the levels of distress to children and allows haemodialysis.
Congenital myasthenic syndromes (CMS) are inherited neuromuscular disorders caused by defects at neuromuscular junctions, which are often a result of acetylcholine receptor gene mutations. A subset of CMS patients (around 14% in the US and Europe) have limb-girdle myasthenia (LGM). This disease can be highly disabling with symptoms including increasing weakness of skeletal muscles. As a result of collaborative work between Newcastle and Oxford, it was determined that many LGM patients have a mutation of the Dok-7 gene (unrelated to the acetylholine receptor), and do not, therefore, respond to standard CMS treatments. Since then, a number of additional mutations have been discovered, and genetic testing is now available for the majority of known LGM-causative genes. Crucially, Dok-7 patients, and those with other non-receptor related mutations, can now be diagnosed accurately and treated effectively, with ephedrine and salbutamol (in the US, albuterol). This significantly improves these patients' quality of life by enabling them to walk and breathe unassisted.
Research conducted by Professor Tim Goodship and co-workers at Newcastle has had a profound effect on the prognosis for patients with atypical haemolytic uraemic syndrome (aHUS). By engaging in research on the genetic factors underlying the disease they developed an understanding of the molecular mechanisms responsible. Identifying that the majority of patients with aHUS have either acquired or inherited abnormalities of the regulation of complement (part of the immune system) led to the establishment of a UK national service for genetic screening and treatment with the complement inhibitor eculizumab. As eculizumab is now available to patients in England, the progression to end-stage renal failure can be prevented and patients already on dialysis will soon be successfully transplanted.
King's College London (KCL) research has made a major contribution to improving the quality of life for patients who have anaemia linked with chronic kidney disease. Studies undertaken by KCL researchers established that intravenous iron supplementation was required in anaemic patients with advanced kidney disease, in whom oral iron therapy was ineffective, and defined the best regimes for administration of intravenous iron. Subsequent KCL work on drugs that stimulate production of red blood cells (erythropoiesis) defined the target levels of haemoglobin to aim for in chronic kidney disease patients. Most recently, KCL researchers made the key discovery that the novel drug peginesatide for the first time enables the rescue of patients who develop a rare and potentially fatal reaction against erythropoietin (which is the commonest treatment for anaemia in chronic kidney disease). These KCL research studies have had a significant impact by making a major contribution to national and international clinical guidelines, including UK NICE guidelines and the 2012 National Kidney Foundation KDIGO Clinical Practice Guideline for Anemia in Chronic Kidney Disease.
Kidney disease affects about 10% of the population and 10% of these patients develop established kidney failure (ERF). Transplantation is a better treatment for ERF than dialysis but is limited by acute and chronic graft rejection. Treatment of rejection mediated by the recipient's T-lymphocytes is now remarkably successful, but antibody-mediated rejection (AMR) remains challenging. A principal cause of AMR is recipient antibodies targeting human leukocyte antigen (HLA, also known a tissue type) on the transplant organ. The presence of such antibodies previously vetoed transplantation but in the last ten years it has become increasingly feasible to transplant across HLA antibody barriers. Research at the University of Warwick (UoW) by Dr Daniel Zehnder and Professor Robert Higgins has facilitated and accelerated this process. Their research includes the first detailed monitoring of antibody levels after transplantation, showing how these affect graft function, and the development of new techniques to remove antibodies from patients. This resulted in over 100 HLA-mismatched renal transplants taking place in Coventry giving a net saving to the NHS of over £5M. Their research and its clinical translation encouraged the performing of another 350 such transplants across the UK and initiation of the National Case Registry.
Research conducted by a multidisciplinary team of oncologists and scientists at the University of Southampton has driven major advances in lymphoma care, leading to the development and standardisation of effective new antibody treatments and optimal drug regimens. Through their direction of international clinical trials, they have influenced care for Hodgkin and Burkitt lymphoma in the UK and internationally, affecting all stages of patient-experience from diagnosis to treatment. Their findings underpin significant improvements in survival and quality of life for the 14,000 people affected by lymphoma in the UK each year.
A new intervention has been developed and trialled in patient groups characterised by mucus obstruction of the airways. Outcomes for these patient groups have improved, and health service decisions have been informed by the underpinning research. A spin-out business, Ockham Biotech Ltd., was created and has generated overseas investment.
A novel mucolytic application and inhaled route of administration for heparin has provided a simple and cost-effective therapeutic means of relieving the symptoms of mucus obstruction in diseases including CF and COPD, which cost the NHS ~£600m and £1bn, pa, respectively.
Research at the University of Nottingham has defined the clinical phenotype and management of lymphangioleiomyomatosis, a rare and often fatal multisystem disease affecting 1 in 200,000 women worldwide. The group has led the development and evaluation of new therapies and diagnostic strategies which are now part of routine clinical care. The research has underpinned the transformation of this previously under recognised and untreatable disease into a condition recognised by respiratory physicians, with international clinical guidelines, patient registries, clinical trials, specific treatments and a UK specialist clinical service.
Drs Peppiatt-Wildman & Wildman have developed novel models to investigate kidney and bladder function and drug action, through visualisation of cellular events in live tissue. This has had an immediate impact on research in the Pharmaceutical Industry, resulting in collaborative links with Pfizer USA and Biogen Idec, and significant investment by Pfizer on the application of kidney models in the development of novel lead candidate drugs for the treatment of kidney disease. In addition, imaging of live bladder tissue, adapted for bedside application, has altered clinical practice in continence and nephrology clinics in NHS Trusts.