Kristine Lillestøl

Indications of 'atopic bowel' in patients with self-reported food hypersensitivity.

Aliment Pharmacol Ther 31, 1112–1122

Anxiety and depression in patients with self-reported food hypersensitivity

OBJECTIVE Self-reported food hypersensitivity (SFH) is common. Psychological factors are assumed to be associated. We assessed anxiety and depression in SFH patients, using both questionnaires and interview. METHODS Consecutive patients (n=130) and randomly selected healthy volunteers (n=75) completed the Hospital Anxiety and Depression Scale (HADS), the neuroticism scale of the Eysenck Personality Questionnaire (EPQ-N) and the General Health Questionnaire (GHQ). Seventy-six of the patients were also interviewed by use of the Mini International Neuropsychiatric Interview and the Montgomery-Aasberg Depression Rating Scale. All patients underwent extensive allergological, gastroenterological and dietary examinations. RESULTS According to interviews, 57% of patients fulfilled the DSM-IV criteria for at least one psychiatric disorder. Anxiety disorders (34%) and depression (16%) predominated. According to questionnaires, patients scored significantly higher than controls on all psychometric scales except for depression (HADS). We also found an underreporting of depression in HADS compared with interviews (2.5% vs. 16%, P=.001). Food hypersensitivity was rarely confirmed by provocation tests (8%). Eighty-nine percent of the patients had irritable bowel syndrome. CONCLUSIONS Anxiety and depression are common in patients with IBS-like complaints self-attributed to food hypersensitivity. Anxiety disorders predominate. In this setting, depression may be underreported by HADS.

Intestinal B cell‐activating factor: an indicator of non‐IgE‐mediated hypersensitivity reactions to food?

Aliment Pharmacol Ther 2010; 32: 66–73

Do psychological factors predict symptom severity in patients with subjective food hypersensitivity

Abstract Objective. We examined whether psychological factors such as general and gastrointestinal symptom-specific anxiety and depression could predict symptom severity in patients with unexplained, self-reported (subjective) food hypersensitivity. For the purpose, we translated and validated the Visceral Sensitivity Index (VSI). Material and methods. Seventy consecutive patients completed questionnaires for Hospital Anxiety and Depression Scale, VSI, Irritable Bowel Syndrome Symptom Questionnaire, and Subjective Health Complaints Inventory. Relationship between scores on psychological factors and scores on somatic symptoms were studied by multiple regression analyses. Results. Most patients reported non-gastrointestinal symptoms in addition to their irritable bowel syndrome complaints, but general and symptom-specific anxiety, and depression could not explain a significant amount of the variance in somatic complaints. Gastrointestinal symptom-specific anxiety was a significant predictor of gastrointestinal complaints (p = 0.02), and age was the sole significant predictor of non-gastrointestinal complaints (p = 0.01). Approximately 90% of the total variance in symptom severity remained unexplained by the psychological factors. The Norwegian version of the VSI had satisfactory validity (Cronbach alfa = 0.93). Symptom-specific and general anxiety were significantly correlated (r = 0.48, p ≤ 0.0001). Conclusions. Psychological factors were not major predictors of symptom severity in patients with subjective food hypersensitivity. The Norwegian version of VSI had satisfactory validity.

Food Hypersensitivity Reactions Visualised by Ultrasonography and Magnetic Resonance Imaging in a Patient Lacking Systemic Food-Specific IgE

Background: Abdominal complaints related to food intake might be due to hypersensitivity. A firm diagnosis of food allergy is often difficult to establish, particularly in the absence of systemic food-specific IgE. Using ultrasonography and magnetic resonance imaging (MRI) we were able to visualise the intestinal response in one such case. Methods: A 24-year-old female presented with self-reported food hypersensitivity, particularly related to the intake of egg. Nausea and diarrhoea were predominant symptoms. Double-blind placebo-controlled food challenge with raw egg was positive, but all other conventional tests of food hypersensitivity, including skin prick test, total and food-specific IgE in serum, were negative. A thorough investigation programme could not reveal any organic disease of the gastrointestinal tract. We extended the evaluation to include two new provocation tests, where intestinal wall thickening and the amount of luminal liquid were monitored by external abdominal ultrasound and MRI. Results: Both ultrasound and MRI investigations indicated intestinal wall thickening and influx of large amounts of fluid into the proximal small intestines within 10 min of duodenal challenge with egg. The response was associated with abdominal pain and bloating. Conclusions: The response to provocation was typical of an immediate allergic reaction. Our results indicate that local food-induced hypersensitivity reactions can occur in the gut in the absence of systemic indications of IgE-mediated allergy. Abdominal ultrasonography and MRI might become valuable tools for documenting such responses.

Comparing the DePaul Symptom Questionnaire with physician assessments: a preliminary study

Background: Diagnostic assessment of chronic fatigue syndrome (CFS) and myalgic encephalomyelitis (ME) is largely based on a two part process; screening patients who might meet criteria and following up this assessment with physicians’ clinical evaluation of a range of inclusionary symptoms and exclusionary illnesses. Purpose: The aim was to assess how well the DePaul Symptom Questionnaire (DSQ) screened for patients who were ultimately diagnosed by physicians using the Canadian Consensus Criteria (CCC). Methods: Sixty-four patients referred for evaluation of possible CFS or ME were screened initially using the DSQ, and then evaluated and subsequently diagnosed by physicians. To assess the consistency between the self-report DSQ and the physicians’ diagnosis, sensitivity and specificity as well as predictive values were calculated. Results: The DSQ identified 60 and the physicians identified 56 as having a CCC diagnosis. The overall agreement between the two ratings on the diagnostic assessment part was moderate (Kappa = 0.45, p < .001). The sensitivity of DSQ was good (98%) while the specificity was 38%. Positive and negative predictive values were 92% and 75%, respectively. Conclusion: DSQ is useful for detecting and screening symptoms consistent with a CCC diagnosis in clinical practice and research. However, it is important for initial screening of self-report symptoms to be followed up by subsequent medical and psychiatric examination in order to identify possible exclusionary medical and psychiatric disorders.

[Neurasthenia in Norway 1880-1920].

Neurasthenia was introduced as a diagnostic category in America in 1869, and rapidly spread to Europe. Many have drawn parallels between the historical disease entity of neurasthenia and contemporary conditions such as chronic fatigue syndrome/myalgic encephalopathy and burn-out, but we have little knowledge about the early history of neurasthenia in Norway. On the basis of Norwegian medical journals from the period 1880-1920, we have sought to study the introduction, understanding and application of the concept of neurasthenia in Norwegian medical practice, with particular emphasis on symptoms, causes, treatment, prognosis and prevalence. Results show that the term was probably used in a Norwegian medical journal for the first time in 1876, and during the 1880s there followed an increasing number of reports of people who had been diagnosed with neurasthenia. The condition was defined as a weakness of the nervous system. The symptom picture was extensive, with exhaustion as the main symptom. The causes of the symptoms could not be objectively verified or located, and theories abounded. Overexertion was a common explanation, although traumas, infections, malnutrition, heredity and sexual excesses were also assumed to be causes. The recommended treatment focused on strengthening the nervous system, for example through rest and electrotherapy. The condition was described as typical of its time, as a response to the «Zeitgeist» and modern life.

subjective food hypersensitivity: assessment of enterochromaffin cell markers in blood and gut lavage fluid

Background: Food hypersensitivity is commonly suspected, but seldom verified. Patients with subjective food hypersensitivity suffer from both intestinal and extraintestinal health complaints. Abnormalities of the enterochromaffin cells may play a role in the pathogenesis. The aim of this study was to investigate enterochromaffin cell function in patients with subjective food hypersensitivity by measuring serum chromogranin A (CgA) and 5-hydroxytryptamine (5-HT, serotonin) in gut lavage fluid. Methods: Sixty-nine patients with subjective food hypersensitivity were examined. Twenty-three patients with inflammatory bowel disease and 35 healthy volunteers were included as comparison groups. CgA was measured in serum by enzyme-linked immunosorbent assay. Gut lavage fluid was obtained by administering 2 L of polyethylene glycol solution intraduodenally. The first clear fluid passed per rectum was collected and 5-HT was analyzed by liquid chromatography tandem mass spectrometry. Results: Serum levels of CgA were significantly lower in patients with subjective food hypersensitivity than in healthy controls (P = 0.04). No differences were found in 5-HT levels in gut lavage fluid between patients with subjective food hypersensitivity and the control groups. There was no correlation between serum CgA and gut lavage 5-HT. Conclusion: Decreased blood levels of CgA suggest neuroendocrine alterations in patients with subjective food hypersensitivity. However, 5-HT levels in gut lavage fluid were normal.