Study Highlights A Finding That Could Help Alpha-1 Sufferers Breathe More Easily

A new mutation in the gene that causes the inherited disease known as Alpha-1 Antitrypsin Deficiency (Alpha-1) has been identified by scientists.

A new mutation in the gene that causes the inherited disease known as Alpha-1 Antitrypsin Deficiency (Alpha-1) has been identified by scientists. The disease affects roughly one in 2,500 people of European descent.

Alpha-1 can lead to serious lung disease in adults, or liver disease at any age.

Congenital Cystic Adenomatoid Malformation Of The Lung
Congenital disease of the lung in which multiple cysts (water bubbles) develop in the lung tissues, sometimes affecting a whole lobe of the lungs.

The finding extends understanding of Alpha-1 at the molecular level, potentially leading to new drug development and better diagnostic tools.

Dr Darren Saunders from Sydney's Garvan Institute of Medical Research and Professor Vanessa Hayes, from the J. Craig Venter Institute in San Diego, published their results in the international journal PLOS One, now online.

In healthy people, Alpha-1 Antitrypsin is a molecule, or 'protein', made in the liver then secreted into the blood. It helps keep the lungs healthy by blocking an enzyme that causes tissue breakdown.

Lung Cancer Screening - FAQs
Lung cancer accounts for nearly 1.3 million deaths annually worldwide. Lung cancer screening can help in early detection of cancer and possible cure.

The genetic mutations that trigger Alpha-1 disease cause the Alpha-1 Antitrypsin protein to accumulate in the liver, rather than being secreted into the blood. That in turn leads to tissue breakdown in the lungs.

Alpha-1 is often first diagnosed as asthma or smoking-related Chronic Obstructive Pulmonary Disease (COPD). Typically, people experience symptoms like shortness of breath, wheezing, recurrent chest colds and allergies. They might also develop unexplained liver disease.

Lung Biopsy - Indications - Procedures - Risks - FAQs - Reference
The procedure by which tissue samples are obtained from the lung is known as lung biopsy. The biopsy tissues obtained from the lungs are examined by a pathologist.

"We're interested in the fact that the mutation we've identified occurs in a completely different part of the gene from known mutations, yet it causes the same basic effect – the protein doesn't get secreted from liver cells," said Dr Saunders.

The research is still early stage, as the mutation has been identified in only one patient, and that patient is from a Middle-Eastern background.

Lung Cancer - Types, Causes, Symptoms, Diagnosis, Treatment and Prevention
Lung cancer is a malignant tumor in the lung tissues. Smoking is the main cause of lung cancer with symptoms like recurrent respiratory diseases.

"We have yet to establish the mutation's prevalence, and we can't do that until we have the funding to examine a wider population of patients."

"At the basic science level, it's a promising breakthrough because it helps us better understand how the protein misbehaves when it's mutated – and that's very important for drug development, because drugs have to try and minimise, or reverse, molecular damage."

"If the mutation turns out to be prevalent, then its inclusion in diagnostic tests will be important."

Source-Eurekalert