Cornea is an important part of the refractive media.Healthy cornea is clear and avascular.Corneal avascularity is necessary for the preservation of optimal vision and is maintained by a balance between angiogenic and antiangiogenic factors.In a variety of pathologic conditions,the balance between angiogenic and antiangiogenic factors may be tipped towards angiogenic molecules,leading to corneal neovascularization (CNV).Recent research showed that vascular endothelial growth factor (VEGF) is an important factor responsible for CNV.Over the past several years,the safety and efficacy of several new agents targeting VEGF or VEGF receptor (VEGFR) have been verifies in many ocular neovascularization diseases such as age-related macular degeneration, diabetic retinopathy, neovascular glaucoma,retinopathy of prematurity and CNV.These agents not only have revolutionized the therapy of ocular neovascularized disease but also have great potential for other blinding conditions such as CNV.These agents have great potential for the treatment of CNV.This article reviewed the most promising anti-VEGF/VEGFR therapies.

Under certain conditions,stress can bring physiological,behavioral or psychological response,thus affect human health and cause diseases.Available intervention methods must be adopted to eliminate or relieve internal environment disorder from severe stress.Studies of stress intervention are of great importance to maintain and promote physical and psychological health.According to the different characteristics,stress intervention methods can be divided into psychological and behavioral.This review presented the advance of stress intervention methods.

Epithelial-mesenchymal transition ( EMT) , a process by which differentiated epithelial cells under-go a phenotypic conversion that gives rise to the matrix-producing fibroblasts and myofibroblasts, is increasingly recognized as an integral part of tissue fibrogenesis after injury.However, the degree to which renal tubular epithelial EMT contributes to kidney fibrosis remains a matter of intense debate and is likely to be context-dependent.Renal tubular EMT is an adap-tive response of epithelial cells to a hostile or changing microenvironment and is regulated by many factors.Several intrace-llular signal transduction pathways such as transforming growth factor-β( TGF-β)/Smad and Wnt/β-catenin signaling are essential in controlling the process of renal tubular epithelial EMT which are potential targets of antifibrotic therapy present-ly.This review highlights the current understanding of renal tubular epithelial EMT and its underlying mechanisms to stimu-late further discussion on its role in the pathogenesis of renal interstitial fibrosis.

Objective To understand the difference of Demodex prevalence among medical students living and studying together with different classes, sexes and nationalities. \ Methods\ Demodex folliculorum and Demodex brevis were detected by using cellophane tape on the nasolabial grooves. \ Results\ The overall prevalence was 51\^5% in 2 248 medical students. Prevalence in different classes and sexes was: freshman 42\^6%, sophomore 49\^6% and third year students 66\^8%; 55\^7% in males and 48\^7% in females. Prevalence in students with different nationalities was: Mongolian 49\^8%, Han 52\^8% and other minorities 64\^3%. \ Conclusion\ The Demodex prevalence in students of senior classes was higher than those from junior ones (P

BACKGROUND: The method of replenishing kidney has becoming one of the therapies for anti-senility in gerontology in Chinese medicine.OBJECTIVE: To probe into the effects of the formula for nourishing kidney yin-zuoguiyin on serum malondialdehyde (MAD) content and superoxide dismutase (SOD) activity in metabolism of free radical.DESIGN: Complete randomized control experiment.SETTINGS: Microbiology and Immunology Department of Guangdong Medical College.PARTICIPANTS: The experiment was performed in Immunology Research Room of Wannan Medical College from September 2002 to July 2004. Forty male senile ICR mice were employed, provided by Institute of Experimental Animal of Medical Scientific Academy in Sichuan. They were randomized into senile control, zuoguiyin group, single shudi (Radix Rehmanniae Praeparata) group (single group) and shudi (Radix Rehmanniae Praeparata) removal group (removal group), 10 mice in each one. Zuoguiyin composes of shudi (Radix Rehmanniae Praeparata), shamyao (Rhizoma Dioscoreae), gouqi (Fructus Lycii), zhi gancao (Radix Glycyrrhizae Praeparata),fuling (Poria) and shangyurou (Fructus Corni) at the ratio of 9:6:6:3:4:5. After decocted routinely, the solution in zuoguiyin group was concentrated to 0.577 5 g/mL of raw herbs contained; that in single group was to 0.157 5 g/mL and that in removal group was to 0.42 g/mL. The mixed medical solutions of 100 g/L were prepared successively in each group.INTERVENTIONS: In zuoguiyin group, single group and removal group,solutions of zuoguiyin and shudi (Radix Rehmanniae Praeparata) and solution with shudi (Radix Rehmanniae Praeparata) removed were administrated successively, 4 times/day, 1.5 mL/time, totally for 75 days. No any drink was provided during the medication. The mice in senile control drank pipe water. After the eyeball extracted, blood of 2 mL collected and serum preserved, the thiobarbituric acid method was used to determine MAD content, the xanthine oxidase method was to determine SOD activity and the colorimetric method was to determine general capacity of anti-oxidation in serum.MAIN OUTCOME MEASURES: ① serum MAD content; ② serum SOD activity; ③ general capacity of anti-oxidation in serum.RESULTS: One mouse was dead in senile control and 3 mice in single group. Terminally, 36 mice entered result analysis. ① MAD content:Serum MAD content in zuoguiyin group and single group were lower than that in senile control [(5.280±1.204) μmol/L and (5.886 2.717) μmol/L,(9.533 3.494) μmol/L, (q=3.641-4.657, P ＜ 0.05)]. Serum MAD content in zuoguiyin group and single group were basically same. ② SOD activity: SOD activity in zuoguiyin group and removal group were higher than senile group [(7.008±0.782) mkat/L and (6.989±0.809) mkat/L, (5.908±0.392) mkat/L,(q=3.641-4.657, P ＜0.05)]. SOD activity in zuoguiyin group and removal group were basically same and that in single group and senile control were basically same. ③ General anti-oxidation capacity: The general capacity of anti-oxidation in serum in zuoguiyin group and single group were stronger than that in senile control, that in removal group was weaker than senile control, but the differences were not significant (P ＞ 0.05).CONCLUSION: Zuoguiyin remarkably reduces MAD content and improves SOD activity in serum of senile mice. It is indicated that zuoguiyin acts remarkably on improving metabolism of free radical in senile body,strengthening SOD activity and reducing organic injuries caused by MAD accumulation.

ObjectiveTo study the protective effects of fluvastatin on the renal lesions in diabetic rat. MethodsThe model of diabetic rats was induced by streptozotocin. SD rats were random divided into four groups: Control group, diabetic rats group, low-dose fluvastatin group 2mg/(kg·d) and high-dose fluvastatin group 4 mg/(kg·d). After treatment for 4 weeks, serum cholesterol, serum creatinine and urinary protein were measured respectively. The expression of TGF β1 in the renal cortex was determined by RT-PCR. ResultsFluvastatin inhibited the expression of TGF-β1 Mrna in a dose-dependent manner, and had no influence on urinary protein, serum cholesterol and serum creatinine. ConclusionsFluvastatin inhibits the overexpression of TGF-β1Mrna, which may be related to independent cholesterol decreasing effect.

Objective To evaluate the effect of age on pharmacodynamics of eisatracurium target-controlled infusion(TCI). Methods Forty patients under N_2O-O_2-propofol-fentanyl anesthesia were divided into groups of Ⅰ and Ⅱ with 20 cases each. Under TOF stimulation monitoring, eisatracurium 0. 15 mg/kg was injected and tracheal intubation was performed when TOFr being zero. and the intubation conditions were evaluated. When T1 restored to 50% cisatracurium TCI started to keep TOFr less than 10%. The recovery times of neuromuscular blockade were recorded after stopping infusion. The amount of cisatracurium consumption was calculated. Results Intubation conditions the onset time and recovery index were not significantly different between two groups. The nonresponse period, duration of action, and recovery time were longer in group Ⅰ than those in group B. Cisatracurium consumption was more in group Ⅰ than that in group Ⅱ (P<0.05). Conclusion By TCI,cisatracurium dosage needed for keeping TOFr less than 10% is less,but the recovery process is still longer in the elderly than those in the younger.

Mammalian target of rapamycin ( mTOR) is a kind of Ser/Thr kinase existing in mammalian cells can regulate cell proliferation, migration and angiogenesis.mTOR including two different complex forms as mTORC1 and mTORC2 .Rapamycin and rapalogs were soon found to have powerful immunosuppressant prop-erties and thus be valuable for preventing the progress of the artery atheromatous by inhibiting the function of mTORC1.But long-term rapalogs administration may increase the side actions such as mTORC1 resistance, mTORC2 inhibition, dyslipidemia.The clinical application of drug combination and dosage optimization may reduce adverse events.

Objective To investigate the roll of p38MAPK on the expression of osteopontin(OPN) mRNA in cultured renal tubular epithelial cells stimulated by albumin.Methods The normal renal tubular epithelial cells(NRK-52E) were incubated in the presence of albumin(30mg/ml) with or without SB203580,an inhibitor of p38MAPK.Reverse transcriptase polymerase chain reaction(RT-PCR) was performed to determine the expression of OPN mRNA and the p38MAPK phosphorylation was evaluated by Western blot analysis.Results Albumin stimulated the phosphorylation of p38MAPK in a timedependent manner,and up-regulated the expression of OPN mRNA.SB203580 could inhibit the expression of OPN mRNA.Conclusion The p38MAPK signal pathway plays an important roll in OPN mRNA expression stimulated by Albumin.

Objective This paper sums up professor Zhang Peiying's clinical experience in diagnosing and treating unstable angina(UA) of coronary heart disease. [Methods]Generalizing the pathogenesis, rules of treatment and principle of diagnosis about UA, through the reference of classical theory of Traditional Chinese medicine and clinical observation. Then analyse professor Zhang Peiying's characteristics about diagnosing and treating UA by two examples of medical record.[Results]Professor Zhang considers deficiency of Qi and stagnation of phlegm is the premise and foundation of UA, holds that stagnation of phlegm, stagnation of blood and spasm of heart vessel are the key causes of the disease and removing blood stasis, relieving spasm of vessel, strengthening the spleen and reducing phlegm is the basic treatment principle. He divides UA into 4 categories: stagnation of heart blood syndrome, stagnation of phlegm and blood syndrome, deficiency of Qi and stagnation of blood syndrome,weakness of Yang with stagnation of phlegm and blood. [Conclusions]Professor Zhang Peiying's scholar thought and clinical experience in diagnosing and treating UA of coronary heart disease is effective. His thought and clinical experience are worth extending and applying.