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- Lexne, Erik
(författare)
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Psychiatric aspects on acute abdominal pain
- 2021
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Introduction: Psychiatric comorbidity is estimated to occur in up to 40% of all patients with somatic disorders, and it can have an influence on patient morbidity and mortality. Approximately 20% of patients who seek care for abdominal pain receive the diagnosis nonspecific abdominal pain, and later develop chronic abdominal pain. This condition and other abdominal conditions without organic explanation are sometimes called diseases of gut-braininteraction, and psychosocial factors (personality, psychiatric conditions, etc.) have been suggested to play an important role. Organic dyspepsia (which in this thesis is limited to pepticulcer, gastritis and gastro-esophageal reflux disease, or GERD) has previously been reported to be associated with personality traits and psychiatric conditions. Despite these known associations, few studies have specifically investigated psychiatric comorbidity in patients with acute abdominal conditions.The aim of this thesis is to investigate the prevalence of psychiatric comorbidity in patients with acute abdominal pain conditions in the emergency setting and to evaluate the possible longterm psychiatric problems of these patients.Methods: Consecutive patients with who came to emergency care with acute abdominal pain conditions were divided into three diagnostic groups: acid-dependent organic dyspepsia (pepticulcer, gastritis and GERD), specific abdominal diagnoses, and non-specific abdominal pain.These groups were evaluated for personality traits, psychiatric symptoms, and self-rated health.A follow-up study explored prescription of antidepressant and anxiolytic (anti-anxiety) medications in this patients 10–15 years after the initial visit to emergency care.Results: Among the various diagnostic groups, patients with acid-dependent organic dyspepsia had significantly more anxiety-related personality traits, less mature characters, significantly more psychiatric symptoms, and poorer self-rated health. Patients with nonspecific abdominal pain also had more personality traits associated with anxiety, although to a lesser extent. Personality factors were significantly associated with poor self-rated health. The long-term follow-up showed that patients with organic dyspepsia and non-specific abdominal pain were prescribed antidepressants and anxiolytic drugs statistically more often than patients with specific abdominal diagnoses.Conclusion: Patients with abdominal pain who seek emergency care have enhanced psychiatric comorbidity, more anxiety-related personality traits, and poorer perceived health.This trend is particularly evident in patients with a diagnosis of acid-dependent organicdyspepsia, and to a lesser degree, patients with a diagnosis of non-specific abdominal pain.These factors also predict future prescription of depression and anxiety medications. These results suggest that patients who come to emergency care with acute abdominal pain could potentially benefit from psychiatric consultation.
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| 2. |
- Bäckryd, Emmanuel, 1974-, et al.
(författare)
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Evidence of both systemic inflammation and neuroinflammation in fibromyalgia patients, as assessed by a multiplex protein panel applied to the cerebrospinal fluid and to plasma
- 2017
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Ingår i: Journal of Pain Research. - : DOVE MEDICAL PRESS LTD. - 1178-7090. ; 10
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Tidskriftsartikel (refereegranskat)abstract
- In addition to central hyperexcitability and impaired top-down modulation, chronic inflammation probably plays a role in the pathophysiology of fibromyalgia (FM). Indeed, on the basis of both animal experiments and human studies involving the analysis of cytokines and other inflammation-related proteins in different body fluids, neuroinflammatory mechanisms are considered to be central to the pathophysiology of many chronic pain conditions. However, concerning FM, previous human plasma/serum and/or cerebrospinal fluid (CSF) cytokine studies have looked only at a few predetermined cytokine candidates. Instead of analyzing only a few substances at a time, we used a new multiplex protein panel enabling simultaneous analysis of 92 inflammation-related proteins. Hence, we investigated the CSF and plasma inflammatory profiles of 40 FM patients compared with CSF from healthy controls (n= 10) and plasma from blood donor controls (n= 46). Using multivariate data analysis by projection, we found evidence of both neuroinflammation (as assessed in CSF) and chronic systemic inflammation (as assessed in plasma). Two groups of proteins (one for CSF and one for plasma) highly discriminating between patients and controls are presented. Notably, we found high levels of CSF chemokine CX3CL1 (also known as fractalkine). In addition, previous findings concerning IL-8 in FM were replicated, in both CSF and plasma. This is the first time that such an extensive inflammatory profile has been described for FM patients. Hence, FM seems to be characterized by objective biochemical alterations, and the lingering characterization of its mechanisms as essentially idiopathic or even psychogenic should be seen as definitively outdated.
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| 3. |
- Emami Khoonsari, Payam, et al.
(författare)
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Systematic Analysis of the Cerebrospinal Fluid Proteome of Fibromyalgia patients
- 2019
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Ingår i: Journal of Proteomics. - : Elsevier BV. - 1874-3919 .- 1876-7737. ; , s. 35-43
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Tidskriftsartikel (refereegranskat)abstract
- Fibromyalgia (FM) is a syndrome characterized by widespread muscular pain, fatigue and functional symptoms, which is known to be difficult to diagnose as the various symptoms overlap with many other conditions. Currently, there are no biomarkers for FM, and the diagnosis is made subjectively by the clinicians. We have performed shotgun proteomics on cerebrospinal fluid (CSF) from FM patients and non-pain controls to find potential biomarker candidates for this syndrome. Based on our multivariate and univariate analyses, we found that the relative differences in the CSF proteome between FM patients and controls were moderate. Four proteins, important to discriminate FM patients from non-pain controls, were found: Apolipoprotein C-III, Galectin-3-binding protein, Malate dehydrogenase cytoplasmic and the neuropeptide precursor protein ProSAAS. These proteins are involved in lipoprotein lipase (LPL) activity, inflammatory signaling, energy metabolism and neuropeptide signaling.
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| 4. |
- Lind, Anne-Li, et al.
(författare)
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Affinity Proteomics Applied to Patient CSF Identifies Protein Profiles Associated with Neuropathic Pain and Fibromyalgia
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- Objective: Today, there are no biological tests on which to base pain diagnoses, treatment choices or to understand the biological processes underlying and accompanying chronic pain for the individual pain patient. Relevant biological markers would greatly aid in diagnosis and treatment of patients with chronic pain. Our study aimed to find proteins in CSF associated with fibromyalgia and neuropathic pain, two common and poorly understood chronic pain conditions.Methods: We have performed CSF protein profiling of 55 proteins using a 100-plex antibody suspension bead array. We collected, analyzed and compared CSF samples from 25 patients with neuropathic pain (two independent sets, n=14 patients for discovery and n=11 for verification), 40 patients with fibromyalgia and 135 controls without neurological disease from two different populations.Results: We found significant differences in CSF protein levels between patients and controls (p<0.05). Among these proteins, Apolipoprotein C1 (APOC1) was found to be increased in CSF of neuropathic pain patients compared to controls and there was a non-significant trend for increased levels also in fibromyalgia patient CSF. Ectonucleotide pyrophosphatase (ENPP2, Autotaxin) was increased in the CSF of fibromyalgia patients compared to all other groups including neuropathic pain patients. Multivariate analysis revealed partially overlapping and partially distinct CSF profiles in neuropathic pain patients compared with fibromyalgia and controls for several other proteins including angiotensinogen (AGT), prostaglandin-H2 D-isomerase (PTGDS), neurexin-1 (NRXN1), superoxide dismutase 1 (SOD1) and superoxide dismutase 3 (SOD3).Conclusions: Our results, suggest that the CSF protein profiles of neuropathic pain and fibromyalgia patients may be different from each other and from those of controls. CSF levels of APOC1, ENPP2, AGT, PTGDS, NRXN1, SOD1 and SOD3 should be further investigated for their potential to serve as biomarkers of different kinds of pain pathophysiology.
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| 5. |
- Lind, Anne-Li, et al.
(författare)
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CSF levels of apolipoprotein C1 and autotaxin found to associate with neuropathic pain and fibromyalgia
- 2019
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Ingår i: Journal of Pain Research. - : DOVE MEDICAL PRESS LTD. - 1178-7090. ; 12, s. 2875-2889
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Tidskriftsartikel (refereegranskat)abstract
- Objective: Neuropathic pain and fibromyalgia are two common and poorly understood chronic pain conditions that lack satisfactory treatments, cause substantial suffering and societal costs. Today, there are no biological markers on which to base chronic pain diagnoses, treatment choices or to understand the pathophysiology of pain for the individual patient. This study aimed to investigate cerebrospinal fluid (CSF) protein profiles potentially associated with fibromyalgia and neuropathic pain. Methods: CSF samples were collected from 25 patients with neuropathic pain (two independent sets, n=14 patients for discovery, and n=11 for verification), 40 patients with fibromyalgia and 134 controls without neurological disease from two different populations. CSF protein profiling of 55 proteins was performed using antibody suspension bead array technology. Results: We found increased levels of apolipoprotein C1 (APOC1) in CSF of neuropathic pain patients compared to controls and there was a trend for increased levels also in fibromyalgia patients. In addition, levels of ectonucleotide pyrophosphatase family member 2 (ENPP2, also referred to as autotaxin) were increased in the CSF of fibromyalgia patients compared to all other groups including patients with neuropathic pain. Conclusion: The increased levels of APOC1 and ENPP2 found in neuropathic pain and fibromyalgia patients may shed light on the underlying mechanisms of these conditions. Further investigation is required to elucidate their role in maintaining pain and other main symptoms of these disorders.
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