Abstract:
ETHNOPHARMACOLOGICAL RELEVANCE:Hyptis martiusii (Lamiaceae), popularly known as "cidreira-do-mato" or "cidreira-brava", grows in abundance in the Northeast region of Brazil, where its leaves are traditionally used in folk medicine in the treatment of intestinal and stomach diseases. The aim of this study was to characterize the chemical constituents and to evaluate the anti-ulcerogenic activity of the essential oil of the leaves of Hyptis martiusii (EOHM) in in vivo models of experimental ulcers in rodents. MATERIALS AND METHODS:EOHM was obtained by hydrodistillation and analyzed by gas chromatography-mass spectrometry (GC-MS). Acute gastric ulcer was induced using absolute ethanol, HCl/ethanol and indomethacin. The volume, pH and total acidity of gastric secretion were determined by the pyloric ligature method and gastrointestinal motility using gastric emptying and intestinal transit. RESULTS:Chemical analysis revealed the presence of 24 components that account for 92.13% of the essential oil of dried leaves, indicating the occurrence of mono and sesquiterpenes. Oral administration of EOHM (100, 200 and 400mg/kg) inhibited ethanol-, HCl/ethanol- and indomethacin-induced ulcers. In the case of pylorus ligature, the oil reduced the volume of gastric juices and total acidity, and increased gastric pH. The EOHM reduced the rate of gastric emptying with only the highest doses, but did not show any effect on intestinal transit at any of the three doses. CONCLUSIONS:The results indicate that the essential oil of leaves of Hyptis martiusii has an antiulcerogenic activity, as evidenced by its significant inhibition of the formation of ulcers in various models. This effect could be related to an increase of gastric mucosal defensive factors. Further pharmacological studies are being undertaken in order to provide more precise elucidation of the action mechanism involved in this activity.
journal_name
J Ethnopharmacoljournal_title
Journal of ethnopharmacologyauthors
Caldas GF,do Amaral Costa IM,da Silva JB,da Nóbrega RF,Rodrigues FF,da Costa JG,Wanderley AGdoi
10.1016/j.jep.2011.07.005subject
Has Abstractpub_date
2011-09-01 00:00:00pages
886-92issue
1eissn
0378-8741issn
1872-7573pii
S0378-8741(11)00480-6journal_volume
137pub_type
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