15 resultados
2-Hydroxyacetyl-7-acetylxanthone (V), a new xanthone derivative, was synthesized in four steps starting from xanthene, by two synthetic approaches. The new compound displayed antianaphylactic activity in the PCA test and in the anaphylaxis shock test in rats. It also displayed analgesic activity in
Norathyriol, a xanthone aglycon isolated from Tripterospermum lanceolatum, was demonstrated to reduce the plasma leakage elicited by the passive cutaneous anaphylactic reaction in normal as well as in adrenalectomized mice. Capsaicin pretreatment greatly suppressed the local edema caused by
Polygala cyparissias (Polygalaceae) grows abundantly on Brazil's Atlantic coast, belonging to the typical underbrush vegetation of dunes and have been used in folk medicine for treatment of several diseases, such as disturbances of bowel and kidney. The hydroalcoholic extract of P. cyparissias (HE,
A series of novel xanthone derivatives were synthesized as potential anti-inflammatory compounds. The compounds were examined for anti-inflammatory and analgesic properties. Aspirin and ketoprofen were used as reference compounds.
METHODS
Acute inflammation was induced by subplantar injection of 0.1
Xanthone-2-carboxylic acids 4a-4k were synthesized as potential antiphlogistic compounds, and compounds 4a-4c and 4f-4i were tested for anti-inflammatory and analgesic properties. In the carrageenin paw edema the most potent of the series acid 4b displayed the activity which was approx one third of
BACKGROUND
Securidaca inappendiculata Hassk. is an traditional Chinese medicine curing rheumatoid arthritis, but there is a lack of reports on material base research.
OBJECTIVE
To find the active fraction of S. inappendiculata contributing the most to antirheumatic activity.
METHODS
Prior to assays
The fruit hull of Garcinia mangostana Linn (Guttiferae) is used as an anti-inflammatory drug in Southeast Asia. Two xanthones, alpha- and gamma-mangostins, were isolated from the fruit hull of G. mangostana, and both significantly inhibited nitric oxide (NO) and PGE(2) production from
Mast cells (MCs) are important effectors in allergic reactions since they produce a number of pre-formed and de novo synthesized pro-inflammatory compounds in response to the high affinity IgE receptor (FcεRI) crosslinking. IgE/Antigen-dependent degranulation and cytokine synthesis in MCs have been
Hypericum Perforatum Extract is an extract of the capsules, flowers, leaves, and stem heads of Hypericum perforatum, commonly called St. John's Wort. Hypericum Perforatum Oil is the fixed oil from H. perforatum. Techniques for preparing Hypericum Perforatum Extract include crushing in stabilized
Tovophyllin A (TA) is a xanthone isolated from Garcinia mangostana L. (GM, Guttiferae) pericarps that possesses various beneficial bioactivities. However, its protective effects on acute lung injury (ALI) and lung carcinoma have not yet been explored. The current work was designed to investigate the
Drimys angustifolia Miers. (Winteraceae) is a Brazilian medicinal plant used as analgesic, antiulcer and anti-inflammatory without studies to assure its efficacy and safety Leaf and stem bark extracts were evaluated to determine the antiulcer, analgesic, antiinflammatory and antioxidant activities.
In the present study, the pharmacological effects of 2,8-dihydroxy-1,6-dimethoxyxanthone from the bark of Haploclathra paniculata were investigated in mice using in vivo inflammation and nociception models. Acetic acid-induced writhing, paw licking induced by formalin, hot plate, and
Mangiferin, a xanthone glycoside isolated from leaves of Mangifera indica (Anacardiaceae) is known to modulate many biological targets in inflammation and oxidative stress. The present study was designed to investigate whether mangiferin exerts protection against myocardial ischemia-reperfusion (IR)
Echinodorus macrophyllus leaf has been used in Brazilian folk medicine to treat inflammatory conditions and kidney dysfunctions. The present study evaluated the effects of leaf ethanolic extract from E. macrophyllus (EEEm) in acute and subchronic models of inflammation. The EEEm was found to cause
Early brain injury (EBI) is involved in the process of cerebral tissue damage caused by subarachnoid hemorrhage (SAH), and multiple mechanisms, such as apoptosis and inflammation, participate in its development. Mangiferin (MF), a natural C-glucoside xanthone, has been reported to exert beneficial