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Irritable bowel syndrome (IBS) is a chronic visceral pain disorder with female predominance, characterized by recurrent abdominal pain and disturbed bowel habits in the absence of an identifiable organic cause. This prevalent and debilitating disease, which accounts for a substantial economic and individual burden, lacks exact diagnostic tools and effective treatment, since its pathophysiology remains uncertain. The bidirectional and multilayered brain-gut axis is a well-established disease model, however, the interactions between central and peripheral mechanisms along the brain-gut axis remain incompletely understood. One of the welldescribed triggering factors, yet accounting for only a f...
Introduction: In this thesis, MEGA-edited Magnetic Resonance Spectroscopy (MRS) has been used for the purpose of non-invasive detection of !- aminobutyric acid (GABA) within the brain. GABA is the main inhibitory neurotransmitter in the human central nervous system, and glutamate is the corresponding main excitatory neurotransmitter. A balance between GABA and glutamate is crucial for healthy neurotransmission within the brain, and regional altered concentrations have been linked to certain neurological disorders. However, it is challenging to measure GABA, and special editing approaches are needed in order to allow reliable quantification. In addition, the GABA measurement is further compli...
Intestinal homeostasis is key to control uptake across the mucosa and protect from harmful substances. Disturbances in the bidirectional communication between the gut and the brain are implicated in irritable bowel syndrome (IBS) and inflammatory bowel diseases (IBD), being Crohn’s disease (CD) and ulcerative colitis (UC) the two most common IBD subtypes. Although these chronic bowel-relapsing inflammatory disorders present different histopathology, they share similar pathological features. Both IBS and IBD are characterized by a disrupted intestinal barrier function, a pro-inflammatory chronic condition, and an altered gut-brain axis. Despite all the scientific effort, the sequence or exa...
Background Irritable bowel syndrome (IBS) is a common, chronic, relapsing, and sometimes disabling, symptombased disorder of gut brain interactions. It has got a female predominance and occurs in all ages, with a slight decrease among elderly. The IBS symptoms can affect everyday work and social life in addition to an increased use of health care resources. Most IBS patients are diagnosed and helped in primary health care (PHC). For many patients, available treatment is insufficient. It is known that both extraintestinal symptoms such as fatigue, as well as comorbidities such as mood disorders, chronic pain syndromes, and insomnia contribute to the illness burden, often to a larger extent th...
Challenges, crises and difficult experiences are an integral part of our lives and an inherent element of every human being's existence, in addition to being ingrained in the functioning of organisations, institutions and nations. On many occasions humankind has failed to confront them, resulting in the real dramas that we witness on the pages of history. Fortunately, challenges, crises and difficult situations have often been lessons, from which appropriate conclusions have been drawn, thanks to which it was possible to create a better future. In the history of the Church from its very beginning, challenges have been an integral part of working towards a better tomorrow, a better version of...
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