ABSTRACT
Objective To investigate the long-term toxicity of an Uyhgur medicine, Kursi Kaknaq, on hematological parameters in the rats.Methods A total of 120 healthy Sprague-Dawley rats were randomly divided into the control, low dose (0.32 g/kg? d ), moderate dose (1.6 g/kg? d) and high dose (3.2g/kg? d) Kursi Kaknaq groups.The drug was given orally, 6 days per week for 180 days.The control group was given 0.5% sodium carboxymethyl cellulose suspension. Results No death was recorded in the rats and no obvious toxic events were observed during the experiment. Hematological parameters including RBC, HGB, MCH, MCHC, LYMP%, WBC, and PLT; biochemical parameters including ALT,AST, ALP, GLU, BUN, ALB ,TBIL, Crea, TCHO, TG, and CK; electrolyte time parameters such as K+, Na+, Cl-and prothrombin time(PT) showed statistically significant differences (P <0.05 and P <0.01), but did not show time and dose effect regularity, and no pathological significance.Conclusions No obvious toxic effects on hematological parameters are observed in the SD rats treated with Kursi Kaknaq at doses of 0.32 g, 1.6 g, or 3.2 g (crude drug) /kg? d orally administered for 180 days, indicating that this drug is safe for long-term clinical use.
ABSTRACT
OBJECTIVE:To investigate the inhibitory effect of Baixuan xiatare tablet on the model mouse with allergic contact dermatitis (ACD). METHODS:60 BALB/c mice were equally randomized into normal control (isometric solvent) group,model (isometric solvent)group,ebastine(positive control,0.003 g/kg)group and the groups of high,middle and low doses of Baixuan xiatare tablet(2.0,1.0 and 0.5 g/kg). The mice were given drugs,ig,once daily for 14 consecutive days. 0.5% 2,4-dinitrofluoro-benzene(DNFB)acetone olive oil solution was applied,for sensitization,on the prepared mouse’s skins one and two days before administration,and 0.2% DNFB acetone olive oil solution on their left ears 16 days thereafter to establish mouse models of ACD. At 48 h after successful establishment of the models,the thickness of the mouse’s left ear margin was measured and the difference value and swelling degree were calculated;flow cytometer was used to determine the levels of T lymphocyte subsets CD4+ and CD8+ in mouse blood and calculate the ratio of CD4+ to CD8+;the levels of interleukin 4(IL-4)and IL-6 in mouse serum were de-termined. RESULTS:Compared with normal control group,those in the model group had higher difference value of ear margin and swelling degree,lower level of CD4+ in blood and ratio of CD4+ to CD8+,and higher content of IL-6 in serum. There was statisti-cally difference (P<0.01). Compared with model group,those in the groups of high,middle and low doses of Baixuan xiatare tablet had lower degree of left ear swelling and higher level of CD4+ in blood;those in the groups of high and middle doses thereof had lower difference value of left ear margin and level of IL-6 in serum;and those in the group of high dose thereof had higher lev-el of CD8+ in blood. There was statistically significance(P<0.01 or P<0.05). CONCLUSIONS:Baixuan xiatare tablet has inhibi-tory effect to some degree on the mouse model with ACD by a mechanism which may be related to the balance of subsets CD4+and CD8+in blood and the reduction of IL-6 in serum.