ABSTRACT
This study was aimed to establish a method for the content determination of three components in Tribulus terrestris L., in order to compare index components of different growing periods, production places and medical parts for the scientific explanation of the harvesting time and growing places. Contents of three effective components inTribulus terrestris L., which were quercetin-3-O-β-D-gentiobioside, isorhamnetin-3-O-β-D-gentiobioside and Terrestrinone A2, were determined by HPLC. The results showed that contents of three evaluation indexes all gradually increased until June and then started reducing. The contents in all evaluated indexes were in the order of the stem and leaf > fruit > root. And the content in the root was below the detection limit. The content indexes ofTribulus terrestris L. of the Inner Mongolia were much higher than that of other regions. It was followed byShandong,Hebei andShanxi province. It was concluded that the method was simple and accurate with good repeatability and stability, which was suitable for quality control ofTribulus terrestris L.
ABSTRACT
In this paper, three higher content of flavonol glycosides from the stems and leaves of Tribulus terrestris L. were determined by reversed phase HPLC. The results showed that there was good liner relationship between the peak areas and the sample concentration at the ranges of 0.011 2~0.280 0 μg (r=0.999 6), 0.064 8~2.592 0 μg (r=0.999 8) and 0.018 4~0.460 0 μg (r=0.999 8) for isorhamnetin-3-O-β-D-gentiobioside-7-O-β-D-glucoside, quercetin-3-O-β-D-gentiobioside and isorhamnetin-3-O-β-D-gentiobioside respectively. The verage recovery rates (n=9) of three flavonol glycosides compounds were 100.15%(RSD=1.32%), 100.02% (RSD=1.14%), 99.77% (RSD=1.16%), respectively. This method is considered to be simple, accurate, stable, good precision and reproducibility, which is available for the quality control and evaluation of T. terrestris L.
ABSTRACT
Objective To investigate the clinical characteristics of skin lesions of tsutsugamushi disease.Methods The skin lesions and clinical characteristics of 17 hospitalized patients with tsutsugamushi disease were analyzed. Results Of the patients, 88.2% (15/17) developed eschar and skin ulcer, 64.7% (11/17) had skin rashes. The patients often developed solitary, painless and nonpruritic eschar 4 to 10 days after the occurrence of fever, with indefinite locations and average diameter of 1.2 cm (range: 0.5 - 3.0 cm). The eschar was covered with a black and dry surface and surrounded by a ring-shaped erythematous halo, and usually shedded 5 to 9 days after the appearance with the formation of shallow ulcer. Superficial lymphadenectasis was observed near the eschar in 80% of the patients with eschar, and no eschar was observed at the first visit in 66.7% of the patients. Skin rashes mainly included nonpruritic congestive papules (45.5%) and maculopapular rashes (54.5%), and often subsided 2 to 5 days after emergence. Conclusions The skin lesions of tsutsugamushi disease include eschar and skin rashes. Eschar is an important characteristic and highly suggestive of this entity.
ABSTRACT
Objective To investigate the apearance and characteristics of skin rashes in patients suffering from dengue fever.Methods Clinical data were retrospectively analyzed for 126 hospitalized patients with dengue fever collected from August to October,2007.Results Out of 126 patients with dengue fever,69.0% (87/126)had skin rashes,which usually developed from day 1 and 11 after fever.About 59.7%(52/87)of these patients developed skin rashes from day 3 to 7 after fever.No eruption order was evidenced in 59(67.8%)patients.Skin rashes were located in both the trunk and limbs in 38(43.7%)patients,and only in the limbs in 30 (34.5%)patients.The incidence rates of maculae,maculopapules,papules.hemorrhagic rash and mixed eruptions were 14.9%(13/87),14.9%(13/87),18.4%(16/87),26.4%(23/87)and 21.8%(19/87),respectively.Conclusions Most patients with dengue fever developed skin rashes from day 3 to 7 after fever.Limbs and trunk are predilection sites of skin rashes in dengue fever.Skin rashes in dengue fever is complex,including maculae,papules,hemorrhagic rashes,vesicles and mixed rashes.