Through bioassay-guided isolation, five compounds with growth inhibitory activity on S1T, an adult T-cell leukemia (ATL) cell line, were isolated from the crude methanol extract of the aerial parts of Hyptis verticillata.

(Reproductive development of Hyptis suaveolens (L.) Poit.: relationship among photoperiod, meristem cell density and expression pattern of a putative arabidopsis gene LEAFY ortholog). Hyptis suaveolens (L.) Poit. (Lamiaceae) is a typical invasive plant that produces an essential oil with several biological properties. The largest essential oil content is found at the flowers. So, advances in th...

Purpose: This study was carried out to assess the effects of the aqueous extract of Hyptis pectinata leaves on liver regeneration and on serum enzymes (AST, ALT and γ-GT) after 67% partial hepatectomy in rats. Methods: AST, ALT and γ-GT, were determined by conventional procedures using a spectrophotometer (Model E2250-CELM). Liver regeneration was evaluated by immunohistochemical staining for p...

Leaves on a bush of Hyptis emoryi Torr. varied in length from less than 1 cm when development occurred in full sunlight (e.g. 40 Mjoules m(-2)) to over 7 cm when the total daily solar irradiance was less than 3 Mjoules m(-2). The 1-cm sun leaves were 3-fold higher than the 7-cm shade leaves in chlorophyll per unit area, mesophyll thickness, and the internal to external leaf area ratio (A(mes)/A...

Das raízes de Hyptis platanifolia foram isolados três novos diterpenos abietanos 19-oxoinuroyleanol, 11,14-di-hidroxi-12-metoxi-7-oxo-8,11,13-abietatrien-19,20β-olídeo and 19,20-epoxi12-metoxi-11,14,19-tri-hidroxi-7-oxo-8,11,13-abietatrieno, em adição ao inuroyleanol e a coulterona. Investigação das partes aéreas forneceu a mistura de esteróides estigmasterol e β-sitosterol, e os triterpenos ác...

The essential oil and the aqueous, hexane and methanolic fractions from Hyptis ovalifolia leaves were evaluated for their antifungal activity in vitro against 60 strains of dermatophytes: 10 strains of Microsporum canis, 10 of M. gypseum, 20 of Trichophyton rubrum and 20 of T. mentagrophytes. The extracts inhibited growth of the dermatophytes tested at different concentrations. The most biologi...

This paper deals with the pharmacognosy of Hyptis suaveolens leaf including its morphological, anatomical, chemical constituents and powder analysis. Contrary to earlier reports, the leaves are amphistomatic. Stomata are diacytic, a few being isotricytic and ansiotricytic. Four types of trichomes have been noted. The venation is semicraspidodromous. Midrib consists of one large moon shaped and ...