Objective:To explore the anti-fatigue effect of Tibet maca in mice. Methods: The mice were respectively given the powder or the alcohol extract of Tibet maca. The lactic acid concentration in blood, serum lactate dehydrogenase ( LDH) , the time of weight loading swimming and serum urea ammonia level after the exercise in the mice were detected, and the anti-fatigue effect of the powder and the alcohol extract of Tibet maca was compared. Results: After the 30-day feeding, the serum LDH activity of the mice taking the powder or alcohol extract of Tibet maca was obviously higher than that of the mice in the control group(P<0. 05), the time of weight loading swimming was significantly longer than that in the control group (P<0. 05), and the blood lactic acid concentration after the exercise was obviously lower than that in the control group (P<0. 05). Conclusion: Tibet maca can improve the time of weight loading swimming of mice, and reduce the level of serum urea ammonia after exercise and blood lactic acid concentration, sug-gesting the powder and alcohol extract of Tibet maca have obvious anti-fatigue effect.

Blood Flow Velocity ; Child ; Coronary Aneurysm ; diagnostic imaging ; Humans ; Mucocutaneous Lymph Node Syndrome ; diagnostic imaging ; Ultrasonography, Doppler

Asthma ; psychology ; therapy ; Humans ; Integrative Medicine ; Stress, Psychological

Posterior ischemic optic neuropathy is a kind of ischemic optic neuropathy, the incidence rate of which is lower with less obviously clinical features, less positive signs and more difficultly diagnosis when compared with anterior ischemic optic neuropathy.Meanwhile, therapeutic method of posterior ischemic optic neuropathy has remained controversial.This article will summarize the research development of the auxiliary examination, diagnosis, differential diagnosis and therapeutic method of posterior ischemic optic neuropathy.

Objective To investigate the relationship between the mutation of the exon 4 of leptin receptor gene(4Lys 109 Arg)and left ventricular function and renal hemodynamics in patients with hypertension.Methods From December 2005 to December 2006,digoxin marked primer enzyme coloration technique was used to detect the 4Lys 109 Arg polymorphism.The color Doppler echocardiography was used to detect the left ventricular function and the renal hemodynamics.The study covered 90 patients with hypertension (hypertension group)and 52 controls (control group).Results The frequencies of 4Lys109Arg in hypertension group and control group had no significant difference.The hypertension with GG genotype was significant difference in left ventrieular ejection fraction(LVEF),E/A,left ventrieular fractional shortening(LVFS),resistance index(BI),pulsatility index(PI)(P<0.05).The hypertension with GA genotype had significant difference in LVEF,E/A,LVFS(P<0.05).In hypertension group,LVEF,E/A,LVFS.RI and PI had significant difference between GG and AA genotype(P<0.05).In control goup,RI had significant difference between GG and AA genotype(0.65 ±0.02 vs 0.63±0.02,P<0.05).Conclusion The renal hemodynamics and the left ventricular function are associated with 4Lys109Arg polymorphism.

AIM: To investigate the regulatory effect of the adenosine triphosphate binding cassette transporter A1 (ABCA1) on apolipoprotein E secretion from human THP1 macrophages.METHODS: Differentiation of THP1 macrophages from monocytes was stimulated with phorbol 12-myristate 13-acetate. The macrophages then were incubated with factors which regulate ABCA1 expression. After periods of incubation, apo E secreted in the medium and synthesized in the cell was determined with ELISA, and apo E mRNA espression was detected with Northern blot.RESULTS: An increase in apo E secretion from THP1 macrophages was observed by 8 h of incubation with 8-Br-cAMP, an activator of ABCA1 expression (P

AIM:To study the effect of acyl coenzyme A:cholesteryl acyltransferase 1(ACAT1)antisense oligonucleotides on the formation of foam cells(FC).METHODS:THP-1 cells were cultured and differentiated into macrophages(MP)by phorbol myristate acetate(PMA).Over-expressing ACAT1 gene THP-1 cells were constructed.The ACAT1 antisense and missense oligonucleotides conducted by LipofectamineTM 2000 were incubated with above cells.Ac-LDL was added 6 h later and incubated for 24 h.The expression of ACAT1 protein was detected by Western blotting.The ACAT activity was measured by quantifying the incorporation of 1-14C oleoyl CoA into cholesteryl esters.The formation of foam cells was detected by oil red O staining.RESULTS:The ACAT1 antisense oligonucleotides inhibited the activity of ACAT in macrophages and over-expressing ACAT1 gene THP-1 cells.It also inhibited the formation of foam cell in macrophages and over-expressing ACAT1 gene THP-1 cells with lipid loading.The missense oligonucleotides did not show the inhibitory effects.CONCLUSION:The ACAT1 antisense oligonucleotides inhibit the activity of ACAT and the formation of foam cells.

BACKGROUND:Now a correspondingly stable project was performed in the rehabilitative treatment for patients with chronic heart failure in China,but it was difficult to be carried out on the wide range because of difficulties in adjusting movement capacity,lower compliance and so on,especially for the elder patients or those with severe chronic heart failure.The movement project will be required with the advantages of good compliance,moderatemovementcapacityandreproducibilityin clinic.OBJECTIVE:To investigate the change of exercise tolerance and cardiac function after the intervention in movement training in patients with chronic heart failure.DESIGN: Randomized and controlled observation.PARTICIPANTS:Seventy inpatients with stable chronic heart failure were chosen from the Department of Gerontology in Wuhan Union Hospital of Hubei Province from August 2002 to October 2003.All patients agreed to this test. Functional class of New York Heart Association (NYHA)was (2.69±0.13).Chronic heart failure duration of all patients was over six months. Seventy patients were randomly divided into movement group(n=34) and control group(n=36).In the movement group with 19 males and 15 females,functional class was(2.68±0.12).In the control group,there were 19 males and 17females.METHODS:Thepatientsinthemovementgroupunderwentthree weeks of movement training (bicycle ergometer,treadmill walking and walking on foot). The patients in the control group underwent three weeks of activity restriction. All patients received the 6-minute walking test under the condition of the same rating of perceived exertion before and after the test. Totally 5 mL of venous blood was drawn without eating anything in the morning before and after the test.The levels of interleukin-6 and norepinephrine were evaluated and left ventricle ejection fraction was observed and determined.MAIN OUTCOME MEASURES:Comparison of walking distance,interleukin-6,norepinephrine,l.eftventricleejectionfractionandcardiac functional class before and after the intervention in all patients.RESULTS:Seventy patients with chronic heart failure were involved in the statistical analysis at last. After the intervention,walking distance covered during 6minutes and left ventricle ejection fraction in the movement group were obviously longer and higher than those before the intervention and in the control group [(385±30)m,(43±5)％;(324±35)m,(39±6)％;(292±30)m,(35±4)％,P＜ 0.05].After the intervention,the levels of plasma interleukin-6 and norepinephrine and cardiac functional class in the movement group were lower than those in the control group and before the intervention[(0.86±0.25) pmol/L,(2.05±0.48) nmol/L,(1.89±0.11);(1.00±0.25)pmol/L,(2.21 ±0.47)nmol/L, (2.45 ±0.12);(1.12±0.23) pmol/L,(2.46 ±0.53) nmol/L,(2.68±0.12),P＜ 0.05-0.01].CONCLUSION:Theprojectof movementtrainingdesignedinour study can improve exercise tolerance and ameliorate cardiac function in patients with chronic heart failure. This project has the advantage of better compliance designed according to oneself.

Objective To evaluate the migrating regulation and ultrastructure of the corneal epithelial stem cells in human fetuses. Methods We examined the corneal cryosections of 14-38 weeks of gestation. Hematoxylin-eosin staining showed the stratified corneal epithelium and the corneal epithelial stem cells were localized by mouse monocolonal antibody against human 64-kilodalton keratin (mAE5), and the ultrastructure of the corneal epithelial stem cells was observed. Results At 14 weeks of gestation, the corneal epithelium was composed of a single basal cells layer and 1-2 superficial squamous cells layers. Some superficial squamous cells were mAE5 positive in the limbus as well as the central and peripheral cornea. At 17-29 weeks of gestation, the limbus epithelium developed from 3 to 5 cells layers and the central region from 2 to 3 cells layers. mAE5 positive cells were found in the suprabasal layers of all 3 regions examined but not in the basal layer. At 33-38 weeks of gestation, the corneal epithelium consisting of 4-6 cells layers was morphologically mature. mAE5 immunoreaction showed the negative cells were confined to limbus basal layer. The ultrastructure of basal layer cells showed they had more heterochromatin in the nucleus, less organells in the cytoplasm and less desmosomes among them. Conclusion The migration of corneal epithelial stem cells in the human fetuses was from the whole layers to basal layer and confined to limbus region finally, and their ultrastructure was immature.

To compare the clinical effect of Qianliekang and finasteride in the treatment of benign prostatic hyperplasia to explore the effectiveness of traditional Chinese medicine for the therapy of benign prostatic hyperplasia. Methods:Totally 36 Wistar rats were selected, and then divided into 3 groups randomly with 12 ones in each, namely Qianliekang group, finasteride group and the control group. After 14 days of castration, the three groups were all treated with subcutaneous injection of 5 mg kg-1 testosterone propi-onate, and Qianliekang group was additionally treated with intragastric administration at 10-fold adult dose, finasteride group was trea-ted with intragastric administration at the dose of 0. 1 mg·kg-1 , and the control group was treated with the same amount of distilled water. The rats were sacrificed after the 21-day treatment, and the wet weight of prostate was determined, the prostate volume was measured and the pathological changes in prostate tissue were observed under a light microscope. Results:The wet weight of prostate in Qianliekang group and finasteride group was (0. 467 ± 0. 061) g and(0. 408 ± 0. 058) g, respectively, the prostate volume was (0. 371 ± 0. 059)ml and(0. 365 ± 0. 054)ml, respectively, and the above indicators were significantly lower than those in the control group(P<0. 05). Conclusion:Qianliekang can effectively inhibit benign prostatic hyperplasia in the model rats, and the mechanism may be related to the proliferation inhibition of prostate cells.