Navigation Links
Cystic fibrosis and diabetes link explained
Date:6/2/2014

Many people with cystic fibrosis develop diabetes. The reasons for this have been largely unknown, but now researchers at Lund University in Sweden and Karolinska institutet have identified a molecular mechanism that contributes to the raised diabetes risk.

"The increased risk of diabetes has previously been explained by the fact that cystic fibrosis causes damage to the pancreas, where the blood-sugar regulating hormone insulin is produced. We are the first research group to show that the mutated gene that causes cystic fibrosis also plays an important role in the release of insulin. The risk of diabetes is not only explained by the destruction of the pancreas", said Anna Edlund, a doctoral student at Lund University Diabetes Centre.

Cystic fibrosis is the result of a genetic mutation in an ion channel that normally regulates salt transport in cells, primarily in the lungs and pancreas. The mutation leads to a wide variety of symptoms. Individuals with cystic fibrosis produce a lot of thick, viscous mucus. This makes their airways sensitive to infection, and repeated or chronic lung infections are common. The secretion of pancreatic juice from the pancreas to the intestine is hindered, which causes diarrhoea and poor weight gain.

Left untreated, cystic fibrosis is fatal, but with improved treatment of symptoms, survival has improved. Many people with cystic fibrosis now live beyond the age of 40.

"Cystic Fibrosis is a severe health condition and diabetes exacerbates an already problematic situation", said Malin Flodstrm-Tullberg, a researcher at the Centre for Infectious Medicine, Karolinska institutet.

Many people with cystic fibrosis have poor sugar metabolism. At the age of 30, around one in four people with cystic fibrosis also has diabetes that requires treatment with insulin. What the researchers have now shown is that the mutation in the cystic fibrosis gene inhibits the secretion of insulin into the blood, which means that the level is insufficient when the demands on the insulin increase, such as after a meal.

"Normally, insulin is released in two stages. The early stage is a rapid response to raised blood sugar and the later stage aims to restore blood sugar levels. In cystic fibrosis, the early stage of insulin release in particular is insufficient", said Anna Edlund, adding:

"Our results also correspond to clinical observations. Many patients with cystic fibrosis who do not have diabetes have normal blood sugar in a fasting state, but raised blood sugar after a meal."

The researchers have worked on insulin producing cells from mice and deceased donors. They have shown that the cystic fibrosis gene plays an important role in the complex chain of events that precedes the release of insulin.

When the cells were exposed to high glucose levels, they responded as expected by increasing insulin secretion, but when a preparation that specifically obstructs the ion channel expressed by the cystic fibrosis gene was added, the cells' ability to release insulin fell significantly.

"Despite being common among cystic fibrosis patients, surprisingly little is known about the mechanisms behind diabetes in this group of individuals. We need to know what causes the problem in order to develop preventive treatments that improve the cells' ability to secrete insulin. Our study provide a first piece of increased understanding how CFTR contribute to insulin secretion", said Lena Eliasson, Professor at Lund University Diabetes Centre.


'/>"/>

Contact: Lena Eliasson
lena.eliasson@med.lu.se
46-705-225-414
Lund University
Source:Eurekalert

Related medicine news :

1. Study evaluates use of inhaled saline for young children with cystic fibrosis
2. Feola, at University of Kentucky, receives NIH grant to study cystic fibrosis
3. Cystic fibrosis patients of low SES are less likely to be accepted for lung transplant
4. Cystic kidney growth curbed
5. Impaired blood vessel function found in cystic fibrosis patients
6. Scientists identify new strategy to fight deadly infection in cystic fibrosis
7. Polycystic ovary syndrome puts glucose control in double jeopardy
8. Tiny RNA molecule may have role in polycystic ovary syndrome, insulin resistance
9. PCOS Diva Launches Spring Meal Plans For Women With Polycystic Ovarian Syndrome
10. New approaches in treating complicated childhood polycystic kidney disease
11. Fosamax Lawsuits Update: Rottenstein Law Group LLP Responds to Fosamax Cystic Fibrosis Study
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/27/2016)... NY (PRWEB) , ... May 27, 2016 , ... This ... of a stroke, which we as a society can control and change. , As ... occurs nearly every 40 seconds within the United States. Plus, with an estimated 129,000 ...
(Date:5/27/2016)... , ... May 27, 2016 , ... Beleza Medspa ... body fat composition regulations. This is the first time that Coolsculpting is being ... at least every six months to ensure they meet the prescribed body-fat standard, measured ...
(Date:5/27/2016)... ... May 27, 2016 , ... Each year ... medicine. Allison Outerbridge is this year’s Life University winner of a ... the university’s Student Leadership Awards ceremony. , Outerbridge is approaching her last quarter ...
(Date:5/26/2016)... ... May 26, 2016 , ... There are many ways to cook ... Council (NHDSC) suggests that Americans prefer their dogs straight off the grill. Of the ... is their favorite way to cook a hot dog, far outpacing other cooking methods ...
(Date:5/26/2016)... ... May 26, 2016 , ... ... outcomes, hosted members and suppliers for its inaugural Member Conference at the Paris ... mission of elevating the operational health of America’s healthcare providers. , The conference ...
Breaking Medicine News(10 mins):
(Date:5/26/2016)... Since its commercial introduction in ... life science tool for conducting genetic studies in a ... in its new report that the industry sits on ... by a range of new applications in the clinical ... http://photos.prnewswire.com/prnh/20140723/694805 ) , Since the Human ...
(Date:5/25/2016)... and GERMANTOWN, Maryland , May 25, 2016 ... ; Frankfurt Prime Standard: QIA) today announced that the company ... Diagnostics GmbH to develop and commercialize predictive assays in oncology. ... as a marker to predict effectiveness of anthracycline treatment in ... "We are pleased to partner with Therawis, which developed the ...
(Date:5/25/2016)... Florida , May 25, 2016 ... Conference & Expo earlier this month, the numbers and ... revenues continue to climb into the billions, more research ... newly released 4th Edition State of Legal Marijuana Markets ... a cannabis-focused data-analysis firm, much of the increase in ...
Breaking Medicine Technology: