DAO y síntomas dermatológicos

DAO y síntomas dermatológicos

Intolerancia a la histamina: un tipo de reacción pseudoalérgica

La intolerancia a la histamina (HIT) es un trastorno común asociado a la alteración del metabolismo de la histamina. No obstante, a menudo se diagnostica erróneamente como otras enfermedades debido a su falta de manifestaciones clínicas específicas. La HIT no cobró importancia hasta principios del siglo XXI.

DAO y síntomas cardiovasculares

Microbial patterns in patients with histamine intolerance

Histamine intolerance represents a controversially discussed disorder. Besides an impaired degradation of orally supplied histamine due to diamine oxidase (DAO) deficiency, a deranged gut flora may also contribute to elevated histamine levels

Histamine-reduced diet and increase of serum diamine oxidase correlating to diet compliance in histamine intolerance

Diagnosis of histamine intolerance (HIT) has been based on low serum diamine oxidase (DAO) values, functional gastrointestinal disorders and improvement of symptoms with a histamine-reduced diet (HRD). In a retrospective analysis of outpatients’ charts we identified 101 patients with HIT. After a median of 13 months, a questionnaire was distributed to the patients so that they could be classified into four diet-compliance groups.

A Histamine-Free Diet Is Helpful for Treatment of Adult Patients with Chronic Spontaneous Urticaria

Twenty-two adult patients were recruited and completed four weeks of histamine-free diet. The USS and UAS scores each showed significant differences before and after the histamine-free diet (p=0.010, p=0.006). There was a significant reduction in plasma histamine level after the histamine free-diet, compared with baseline (p=0.010). However, DAO activity did not change after the histamine-free diet (p=0.165).

A Popular myth – low-histamine diet improves chronic spontaneous urticaria – fact or fiction?

A total of 75% of the patients had a benefit from the low-histamine diet. Thirty-four of 56 patients (61%) reached the primary endpoint of the study, an improvement of UAS 4 of ≥3. Overall, a significant reduction from 9.05 to 4.23 points (P = 0.004) was achieved; the average reduction in a strongly affected subgroup was 8.59 points (P < 0.001). DAO activity remained stable.