|
 |
 |
|
 |
News |
|
 |
Self-testing kits for coeliac disease appear in the media |
|
 |
 |
 |
| |
 |
|
|
|
|
 |
|
|
|
|
 |
Possible enzyme cure for coeliac disease? |
|
 |
 |
 |
| |
 |
|
 |
Several studies in recent months have raised the possibility of an enzyme treatment for those with coeliac disease. Researchers have found that a proenzyme form of endoprotease B (EP-B2) from germinating barley seeds has been effective in digesting gluten, leading to full detoxification of harmful proteins.
Dr Kamran Rostami, medical expert for Coeliac UK says: ''Although new advances in the field of treatment of coeliac disease are exciting and promising, there is still a long way to go to be able to apply these recommendations in proper human subjects. We have no information about their efficacy in long term and the possible side effects which could be a limitation in their use. I believe this utopia will be achieved one day. We are clearly making progress and the keystone to a normal life for gluten sensitive people is predictable and achievable. But meanwhile it is too early to say to our patients that alternative treatment of coeliac disease is now available. Future clinical trials will determine whether enzyme therapy could be used as a partial or full alternative treatment, helping with less restriction or replacing completely a gluten free diet.''
Gass J, et al; 'Effect of barley endoprotease EP-B2 on gluten digestion in the intact rat'. J Pharmacol Exp Ther. 2006 June
Bethune MT, et al; 'Heterologous Expression, Purification, Refolding, and Structural Functional Characterization of EP-B2, a Self-Activating Barley Endoprotease'. Chem Biol, 2006 13(6):637-47
|
|
|
|
 |
|
|
|
|
|
|
|
|
 |
Research |
|
 |
'Change in Lipid Profile in Celiac Disease: Beneficial Effect on Gluten-Free Diet' |
|
 |
 |
 |
| |
 |
|
 |
Untreated coeliac disease is associated with hypocholesterolaemia, which is thought to contribute to a favourable cardiovascular risk profile. This has led to the suggestion that treatment with a gluten free diet may result in an elevation of the serum cholesterol level and hence worsen this risk profile. However there is a lack of evidence to back this up. This study aimed to examine the effect of a gluten free diet on lipid profile.
From a database of 700 patients, 132 adults with biopsy proven coeliac disease were identified who had responded well to a gluten free diet and had lipid values taken at the time of diagnosis and again after being on the gluten free diet for a minimum of 6 months (median 20.5 months). Those who did not respond to a gluten free diet or were poorly compliant (as assessed by physician and dietitian) were excluded, along with those who had dyslipidaemia and were already on lipid-lowering medications, or those with diabetes, malignancy, thyroid disease, liver disease, IBD, or pancreatitis at the time of diagnosis.
In both men and women, the results showed that there were significant increases in total cholesterol and HDL cholesterol, but not LDL cholesterol. The greatest increase in total cholesterol and HDL was in subjects with the lowest initial values. LDL/HDL ratio significantly decreased. The largest increase in HDL was seen in subjects with more severe disease as indicated by low albumin level and presence of total villous atrophy.
The authors conclude that treatment of coeliac disease with a gluten free diet resulted in improvement in the lipoprotein profile, which included an increase in HDL and a decrease in LDL/HDL ratio. Despite an increase in total cholesterol, the authors suggest that HDL has greater significance as a risk factor, and that the findings of this study should allay potential concerns that dietary treatment of coeliac disease worsens cardiovascular risk.
Brar P, Y.Kwon G et al; Change in Lipid Profile in Celiac Disease: Beneficial Effect of Gluten-Free Diet. The American Journal of Medicine (2006) 119, 786-790
|
|
|
|
 |
|
|
|
|
 |
'Systematic review: the use of serology to exclude or diagnose coeliac disease (a comparison of the endomysial and tissue transglutaminase antibody tests)' |
|
 |
 |
 |
| |
 |
|
 |
With screening studies suggesting that coeliac disease has a much greater prevalence than previous thought, there is an increasing use of serology in screening asymptomatic people and testing those with suggestive features.
The aim of this systematic review is to compare the sensitivities and specificities of the endomysial (EMA) antibody and the tissue transglutaminase (TTG) tests. The EMA test is subjective, labour intensive and one common substrate (monkey oesophagus) is from an endangered species. Tissue transglutaminase is the antigen that is recognised by the EMA and uses either guinea pig or human recombinant TTG and therefore seems to preclude the problems with the EMA test. Thus there is a move to replace the EMA test.
Using electronic databases PubMed, Medline and Ovid relevant papers were searched using the terms TTG and EMA antibodies.
In all 34 studies were identified. Both EMA antibody and TTG antibody were found to have very high sensitivity (93% for both), and specificities (>99% and >98% respectively). Review studies comparing EMA antibody with human recombinant TTG show that EMA antibody more often has a higher specificity and human recombinant TTG antibody more often has a higher sensitivity.
The authors conclude that human recombinant TTG antibody is the preferred test for screening asymptomatic people and for excluding coeliac disease in symptomatic individuals with a low pretest probability for coeliac disease. Furthermore it has a number of practical and financial advantages.
N.R. Lewis & B.B Scott; Alimentary Pharmacology & Therapeutics (2006) 24, 47-54
|
|
|
|
 |
|
|
|
|
 |
'Percentage of energy obtained from major food groups in coeliac patients on a strict gluten-free diet' |
|
 |
 |
 |
| |
 |
|
 |
There is limited data on the composition of diets of adult patients in the UK on a strict gluten free diet (GFD). There is concern that since gluten containing foods contain a high proportion of complex carbohydrates, there may be excess consumption of fats and proteins (with a decrease in carbohydrates) and a corresponding increase in energy consumed.
Over an 8 week period, all patients seen in a weekly specialist gastroenterology clinic, with histologically confirmed coeliac disease and on a strict GFD were invited to prospectively fill out a validated 3-day food diary. 22 patients were identified, of which 14 returned completed diaries. Completed diaries were inputted into a computerised nutrient databank. Data for gluten-free foods not in the nutrient databank was obtained from "Gluten-free booklet 2003" published by the British Dietetic Association.
Results were compared against the National Diet and Nutrition Survey of adults 19-64, 2003. Mean age of respondents was 52 years (34-73), with median age at diagnosis being 47 (19-70). Median length of time on a GFD was 11.5 (1-22) years. 12 out of the 14 patients were female. Overall, in those on a strict GFD, 38% of energy was obtained from fats, 48% from carbohydrates and 14% from protein. This compares with 34% from fats, 49% from carbohydrates and 17% from protein in a background population from Northern England. These differences were not significant. Average energy intake for the 2 males was 2000±93.2 kcal/day (cf. 2323 kcal/day in the background population) and 2205±138 kcal/day (cf. 1632 kcal/day) for the females. Mean BMI for females was 24.1±1.31.
We concluded that in this relatively small sample, percentage of energy obtained from the major food groups did not differ significantly from the background population. However, female patients with coeliac disease on a strict GFD may have a significantly higher energy intake, but this is not reflected in an increased BMI.
G.G.Robins, S. Hamlin, P.D.Howdle (2003-4)
Academic Unit of Medicine, Clinical Sciences Building, St. James's University Hospital, Leeds, UK
|
|
|
|
 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
 |
Audit of patient's views on new format coeliac clinics |
|
 |
 |
 |
| |
 |
|
 |
Prior to 2005, patients with newly diagnosed coeliac disease in the Harrogate area received an initial one hour dietetic out-patient appointment, followed by a 20 minute follow up appointment ~six weeks later. After this time there was no mechanism for further dietetic input, unless the patient was re-referred by their GP or consultant with specific dietary problems (a situation which occurred infrequently). The patients received an annual medical review by the gastroenterology team in a 'normal' out-patient clinic, but there was no dietetic expertise available in this clinic.
In 2005, a specialised 'coeliac clinic' was established in partnership between the Trust's gastroenterology and dietetic services.
Coeliac clinics are held in the early evening (5.30 - 7.30pm), 3-4 times per year to allow all coeliac patients under the care of the gastroenterologists (approximately 170 patients) to be seen annually. Patients have routine blood tests done prior to attending the clinic.
In addition, a specialist dietitian is available in the clinic. All patients have the option of dietetic review if they wish. (NB At diagnosis, all patients still receive the initial one hour dietetic appointment and a 20 minute follow up appointment in the dietitian's own clinic). Manufacturers of gluten free products are also invited, along with members of the Harrogate branch of Coeliac UK.All patients attending the clinics on 2 specified dates were asked to complete an anonymous questionnaire. Thirty-nine patients responded.
The feedback from patients has been very positive. 64% patients find the evening clinic appointments more convenient. The patients who found it less convenient tended to be elderly, whereas the younger patients felt that not having to take time off work was important. All patients have been given the option to continue to attend the 'normal' gastroenterology clinic, instead of the coeliac clinic, if they wish.
82% felt that having the opportunity to speak to the dietitian was important. The most common topics for questions include recent changes to food labelling regulations, adequacy of dietary calcium intake and queries regarding prescribable gluten free foods. Further review appointments are arranged for patients to attend dietetic clinics if deemed appropriate.
This service is to continue following the favourable feedback and the results will be fed back to the Harrogate branch of Coeliac UK.
Contact details for the Senior Specialist Dietitian involved in the audit are available from the Diet and Health team on request.
|
|
|
|
 |
|
|
|
|
|
|
|
|
|
|
 |
Coeliac Disease Symposium, New York City |
|
 |
 |
 |
| |
 |
|
|
Coeliac disease will take center stage in New York City as the Celiac Disease Center at Columbia University hosts the XII International Celiac Disease Symposium 2006.
Date: November 9th-11th, 2006
This symposium is expected to attract healthcare industry leaders, clinicians, nutritionists, diagnostic and pharmaceutical executives, scientists, policy makers, patients and journalists and will encompass every aspect of adult and paediatric coeliac disease- diagnosis, treatment, science and public policy.
For further information and to see a full programme follow link to http://www.celiacdiseasecenter.columbia.edu/symposium
Three abstracts of Coeliac UK research projects - the Dietitians' Survey, the Membership Survey and the Threshold Research Project have been accepted for inclusion in the Symposium. The abstracts will be displayed as posters and the findings of the Dietitians' Survey and Threshold Research Project will be presented at the symposium as well. Sarah Sleet (Chief Executive) and Norma McGough (Head of Diet and Health) are set to attend as representatives of Coeliac UK and will also be attending the workshop "Novel research strategies on treatment and prevention of Coeliac Disease" of the European Commission (EU) project on coeliac disease (CD) CDEUSSA. The workshop is planned at the 12th of November 2006, New York, USA (right after the XII Celiac Disease symposium).
CDEUSSA is an operational European Multi-stakeholder Platform of experts on CD from crosscutting areas, including industry, nutritionist, basic researchers, clinicians and representatives of patient associations. You will find more information on the website: www.cdeussa.com
|
|
|
|
 |
|
|
|
|
|
|
|
|
|
|
News | Research | Project Update | What's on |
|
 |
| Coeliac UK, Suites A-D, Octagon Court, High Wycombe, Bucks HP11 2HS | Registered Charity Number: 1048167 | © 2006 Coeliac UK. All rights reserved. |
|
|