“We don’t know what causes appendicitis. There is evidence that the cause may be multi-factorial, since some patients gets a perforated appendix while the course is less severe in others. The course of the disease is unpredictable and typical symptoms do not appear in a third of cases. It would be better”, says Anna Solberg, one of the scientists at the Fibrinolysis Laboratory at the Sahlgrenska Academy, and specialist at the Surgical Clinic at Sahlgrenska University Hospital, “if we didn’t treat all patients in the same way. Each case is unique.”
Patients often are sent for surgery to be on the safe side, only to discover that the appendix was not inflamed. It is possible that antibiotics or observation alone would have been sufficient in many cases, and the patients would not have needed to undergo surgery. But the appendix perforates in 20% of patients leading to an increased risk for complications such as wound infections, abscesses in the abdominal cavity and the formation of adhesions, which can in turn lead to bowel obstruction and further surgery.
“The work presented in the thesis shows how enzymes known as proteases, which break down tissue, are distributed at and around the region which the appendix has perforated. Tissue samples have been taken at different grades or stages of appendicitis in order to investigate whether the quantities of proteases are correlated with the severity of the inflammation,” says Anna Solberg.
The results show that there is an imbalance between the proteases and the anti-protease, TIMP-1, with the task to inhibit the enzymes that break down tissue. It turns out that this imbalance is important for how damage to the tissue can lead to perforation of the appendix.
“This means that we know more about the molecular mechanisms behind the process that can lead to a perforated appendix”, says Anna Solberg.
Furthermore, TIMP-1 reflected the degree of inflammation in the blood at the time for surgery. It is possible that a blood sample measuring the amount of TIMP-1 could become a part of the clinical diagnostic process in the future, and thus determines the severity of the inflammation. However, Anna Solberg points out that more studies with repeated blood samples taken during the course of the disease are required.
“I plan to continue research in the field in order to see whether TIMP-1 can function as a marker of inflammation, in order to determine the diagnosis and predict the disease course. This could lead to more focussed surgery, fewer complications and shorter hospital stays, and it could improve the possibility of giving individual treatment, which also considers the risk of increased resistance to antibiotics.”APPENDICITIS
The thesis has been successfully defended.
The full text of the thesis is available from http://hdl.handle.net/2077/22259
Organ-on-a-chip mimics heart's biomechanical properties
23.02.2017 | Vanderbilt University
Researchers identify cause of hereditary skeletal muscle disorder
22.02.2017 | Klinikum der Universität München
In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport
Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...
The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.
The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...
Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...
Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".
Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...
13.02.2017 | Event News
10.02.2017 | Event News
09.02.2017 | Event News
24.02.2017 | Life Sciences
24.02.2017 | Life Sciences
24.02.2017 | Trade Fair News