Subjective visual gravity detection includes subjective visual vertical(SVV)detection and subjec-tive visual horizontal(SVH)detection,which refers to the detection of the angle between patients' perceived gravity vertical line and gravity horizontal line and the actual gravity vertical line and horizontal line when people exclude vis-ual reference and in dark environment.The results are used to evaluate the function of the utricle of the subjects,and then provide the basis for diagnosing vestibular system diseases.With the continuous improvement of SVV &SVH examination technology and the understanding of the mechanism,SVV & SVH examination has been widely applied to clinical work.At present,there are some progresses of srvesvit SVV & SVH in the diagnosis,evaluation and treatment of diseases of the vestibular system such as vestibular neuronitis,Meniere disease and benign paroxys-mal positional vertigo(BPPV),and this article reviews these progresses.

Subjective visual gravity detection includes subjective visual vertical(SVV)detection and subjec-tive visual horizontal(SVH)detection,which refers to the detection of the angle between patients' perceived gravity vertical line and gravity horizontal line and the actual gravity vertical line and horizontal line when people exclude vis-ual reference and in dark environment.The results are used to evaluate the function of the utricle of the subjects,and then provide the basis for diagnosing vestibular system diseases.With the continuous improvement of SVV &SVH examination technology and the understanding of the mechanism,SVV & SVH examination has been widely applied to clinical work.At present,there are some progresses of srvesvit SVV & SVH in the diagnosis,evaluation and treatment of diseases of the vestibular system such as vestibular neuronitis,Meniere disease and benign paroxys-mal positional vertigo(BPPV),and this article reviews these progresses.

Objective To understand the expression of mRNA for two Toll-like receptors (TLRs) (TLR2 and TLR4) and two T helper (Th)1 and Th2 cytokines [ interleukin (IL)-4, interferon (IFN)-gamma] in splenic macrophages of ovalbumin-induced allergic asthma mice model. Methods The expression of mRNA for TLB2、TLR4 and the house-keeping gene HPRT in both splenic macrophages of BALB/c allergic asthma mice and the control mice were analysed by real-time polymerase chain reaction (PCR). We examined the threshold cycle times (Ct) of cDNA of TLR2、TLR4 and HPRT gene to get Ct2、Ct4 and CtH respectively. The value of relative quantity of mRNA level was calculated by the ratio of Ct2/ CtH、Ct4/CtH. After stimulating cells with PMA and Ionomycin with anti-CD3/CD8 in the presence of Brefeldin A, intracellular levels of Th1 cytokines (IFN-?) and Th2 cytokines (IL-4) were determined for CD3+ CD8- and CD3+ CD8+ T cells. Results We observed Ct2/CtH (1. 26?0. 04,1. 35?0. 11, P 0.05) in splenic macrophages between the control mice and allergic asthma mice; the expression of TLR2 mRNA of allergic asthma mice was significantly reduced. We examined IFN-?[IFN-?(20. 83?1. 32)%, (31.78?2. 54) %, IL4(2. 04?0. 24)% , (5. 91?0.83)% P