Altered dopamine signalling in chronic epigastric pain syndrome.
J Physiol Pharmacol
; 71(6)2020 Dec.
Article
en En
| MEDLINE
| ID: mdl-33727428
ABSTRACT
Chronic epigastric pain syndrome (CEPS) is an important diagnostic problem, especially in patients without macroscopic and microscopic changes in gastric mucosa. The cause of this ailment is unclear. The aim of this study was the assessment of coexistence between symptoms of this syndrome and secretion level of dopamine (DA), as well as the efficacy of peripheral and central D2 receptors antagonist. Sixty depressive patients with CEPS occurring independently of the diet and with no Helicobacter pylori infection and 30 healthy subjects were enrolled in this study. Plasma DA and urinary homovanilic acid (HVA) concentration were measured by ELISA, and the mRNA expression of dopa decarboxylase (DDC) in gastric mucosa was evaluated by RT-PCR in 30 patients with CEPS and 30 controls. Severity of epigastric pain before and after 12 weeks 2 x 50 mg itopride or sulpiride treatment was evaluated using the modified 10-point Visual Analogue Scale. Higher average levels of plasma DA and urinary HVA levels in CEPS patients than controls 129.5 ± 22.0 versus 109.1 ± 18.4 pg/ml (p < 0.001) and 6.82 ± 1.55 versus 5.39 ± 1.04 mg/24 h, respectively were obtained. Moreover, the expression of DDC in gastric mucosa of CEPS patients was higher than in healthy subjects (p < 0.01). Sulpiride subsided epigastric pain in 73.3%, but itopride reduced it only in 6.6% of CEPS patients. We concluded that altered dopamine signalling may affect locally-and-centrally mediated chronic epigastric pain.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Sulpirida
/
Benzamidas
/
Compuestos de Bencilo
/
Dopamina
/
Dolor Abdominal
Tipo de estudio:
Clinical_trials
/
Observational_studies
Límite:
Adult
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
J Physiol Pharmacol
Asunto de la revista:
FARMACOLOGIA
/
FISIOLOGIA
Año:
2020
Tipo del documento:
Article
País de afiliación:
Polonia