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.

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.

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

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

Objective To investigate the effect of skeletal muscle training on exercise tolerance in patients with chronic heart failure(CHF). MethodsSeventy patients with CHF were divided into group A( n =34),undergoing 3 weeks of exercise training(bicycle ergometer, treadmill walking and walking on foot),and group B( n =36), undergoing 3 weeks of activity restriction. Before and after exercise training and after activity restriction, 6 minutes of walking test was performed and levels of interleukin-6(IL-6), norepinephrine(NE) and left ventricle ejection fraction(LVEF) were evaluated. ResultsAfter exercise training in group A, the maximum distance walked was (385?30.12)m. The levels of LVEF, plasma IL-6 and NE were (43?5.23)%,(0.86?0.25)pmol/L and (2.05? 0.48 )nmol/L,respectively. All the above parameters were significantly ameliorated when compared with group B ( P 0.05). ConclusionThe skeletal muscle training could improve exercises tolerance and ameliorate cardiac function in patients with chronic heart failure,which was beneficial for the rehabilitative treatment.

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.

Rat calcineurin (CaN) A alpha isoform (Ppp3ca) cDNA recombinant adenovirus vector was constructed in order to explore the effect of CaN on the myocardium apoptosis induced by ischemia-reperfusion injury. Total RNA was isolated from the heart of the adult Wistar rat, and Ppp3ca CDS segment of approximate 1.59 kb size was amplified by reverse transcriptional PCR method. Ppp3ca cDNA segment was cloned into pMD18-T Simple vector for sequencing, and the right clone was named T-Ppp3ca. Ppp3ca cDNA segment obtained from T-Ppp3ca was ligated with pShuttle2-IRES-EGFP to construct a recombinant plasmid pShuttle2-Ppp3ca-IRES-EGFP. Ppp3ca-IRES-EGFP expression cassette containing CMV, Ppp3ca-IRES-EGFP and SV40 polyA DNA fragment (3.97 kb) obtained from pShuttle2-Ppp3ca-IRES-EGFP was connected with pAdeno-X backbone sequence to construct a recombinant plasmid pAdeno-Ppp3ca. After being identified by PCR and enzyme digestion, recombinant plasmid pAdeno-Ppp3ca was packaged in HEK293 cells. Supernatant of adenovirus from HEK293 cells was collected after a visible cytopathic effect (CPE) appeared. The DNA of the recombinant adenovirus was extracted with the standard method. The presence of the recombinant adenovirus was verified by PCR. The results showed that sequencing results verified that the PCR product of Ppp3ca gene was identical to GenBank. Agarose electrophoresis showed the bands of recombined plasmid pAdeno-Ppp3ca and the recombinant adenovirus identified by enzyme digestion and PCR were in the right range corresponding with expectation. It was concluded that the recombinant adenovirus carrying rat calcineurin A alpha (Ppp3ca) cDNA as well as a report gene-enhancer green fluorescent protein gene was successfully constructed in this experiment.
Adenoviridae/*genetics ; Calcineurin/*biosynthesis ; Calcineurin/genetics ; Cloning, Molecular ; DNA, Complementary/genetics ; Genetic Vectors/genetics ; Green Fluorescent Proteins/biosynthesis ; Green Fluorescent Proteins/genetics ; Myocardial Reperfusion Injury/*genetics ; Myocardium/chemistry ; Rats, Wistar ; Recombination, Genetic/genetics

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.

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.

Translational medicine is a totally new concept which could basically eliminate the barrier between basic medicine and clinical medicine and shorten the process of‘bench to bedside’Throughout the history of the diagnosis and treatment of acute pancreatitis,we found that changes of treatment concept at each historical stage were the results of‘translational medicine’under the technical and cognitive condition at that time.This paper elaborated on the important role of translational medicine based on the diagnosing and treating development of acute pancreatitis as well as discussed the medical teaching and research under the mode of translational medicine.