BACKGROUND: Effect of exercise training on ultrastructure of skeletal muscle is a focus of quantified cytobiology in sports medicine. OBJECTIVE: To explore the changes of transportation function of calcium ion in sarcoplasmic reticulum of muscle in the model of reduced training after endurance training. DESIGN, TIME AND SETTING: The randomized animal trial was performed at Xi'an Sports Institute from April to July 2006, and the biochemical test was performed at the Animal Experimental Center of Xi'an Jiaotong University in July 2006. MATERIALS: Thirty-nine healthy 2-month-old male SD weighing (220?20) g were selected. METHODS: Five rats were used in the preliminary experiment, and the others were randomly divided to normal control group (n=8), endurance training group (n=8) and reduced training group (n=18). The increasing training period of endurance training group and reduced training group lasted for 6 weeks, and then reduced training group was randomly divided to 3 groups according to reduced training cycle: 2, 4 and 6 weeks group. The rats did increasing endurance loading exercise on a treadmill, while reduced intensity was used in reduced training group. MAIN OUTCOME MEASURES: Enzyme coupling method and fluorescence probe technology were used to detect sarcoplasmic reticulum Ca2+-ATPase (adenosine triphosphatase) and maximum Ca2+ uptake and release of gastrocnemius muscle. RESULTS: The activity of Ca2+-ATPase in endurance training group was significantly increased compared with normal control group (P 0.05); reduced training 4 and 6 weeks groups were significantly reduced compared with endurance training group (P 0.05); while the maximum uptake and release of Ca2+ in sarcoplasmic reticulum of reduced training 4 and 6 weeks group was significantly reduced (P

BACKGROUND:The androgen response to resistance exercise is one of hot topics in sports science research. At present, the androgen responses to resistance exercise show different results. There are different androgen changing trends under different resistance exercise interventions.
OBJECTIVE:To have a deep insight into the influence of resistance exercise on the response of human body androgen, clarify research progress in androgen response to resistance exercise, and provide the basic theory for monitoring resistance training.
METHODS:Literatures and paper reports about androgen response to resistance exercise are electronical y retrieved from the American Biological Medical Literature Database PubMed from 1986 and 2013. Final y 46 literatures addressing the research progress is analyzed about androgen responses to resistance exercise were included.
RESULTS AND CONCLUSION:Studies have shown that, weight lifting (power snatch and power clean), squating, and deadlifting produced higher testosterone levels than the smal muscle groups. Under the same load, eccentric and concentric contractions produced the same hormone response. Adequate training amount and intensity may change the circulating testosterone levels. Short sports intermittent time led to a higher testosterone response than the long intermittent time. The free testosterone levels in youth group were significantly increased compared with the older group before and after exercise. Nutrition intervention affected acute testosterone responses to resistance exercise. Changes in exercise intensity and amount wil alter quiet testosterone levels, once returned to normal training, testosterone levels wil return to baseline values. Resistance exercise can increase androgen receptor content in human skeletal muscles.

Chronic obstructive pulmonary disease(COPD) is a common condition among the old,which remains a main cause of death due to its high fatality.Airway remodeling is one of its pathological features.This article reviews the pathological changes and imageological assessment of COPD airway remodeling,its correlation with microbes and its pathogenesis and therapies.

AlM: To investigate the risk factors of diabetic retinopathy ( DR) in type 2 diabetes patients.METHODS:A total of 380 cases of type 2 diabetes were selected from January 2014 to June 2014, divided into DR group (126 cases) and non-diabetic retinopathy ( NDR) as control group (254 cases), all patients were underwent medical history, physical examinations, laboratory and assistance examinations. The prevalence and single factor and multiple factors of DR were analysed by the logistic regression model.RESULTS: The univariate logistic regression analysis showed that DR was associated with diabetes duration, systolic blood pressure, triglyceride, total cholesterol, low - density lipoprotein, urine protein, intraocular pressure, carotid intima - media thickness, peripheral neuropathy disease was the related risk factors for DR. ln multiple logistic regression analysis, only duration was the related risk factors for DR.CONCLUSlON:The occurrence of DR is the outcome of combined action of multiple factors, duration is an independent risk factor for occurrence of DR.

According to seven global minimal essential requirement in medical education laboratory medicine,student practice was tested.The results suggested that laboratory medicine education in China now should increase the courses of communication skills,people’health and hygiene system etc.

The research of DHA production by marine microorganism culture is active in marine bioactive substances exploitation. The marine microorganism species rich of DHA, the mechanism and influencing factors of DHA synthesizing, the questions and solving method of large scale production are reviewed in this article.

Objective To evaluate the therapeutic effect of rituximab combined with autologous peripheral blood stem cell trans-plantation(APBSCT)in treatment of aggressive or refractory and recrrent B-cell non-Hodgkin′s lymphoma.Methods Forty-four patients with aggressive or refractory and recrrent B-cell non-Hodgkin′s lymphoma and treated with APBSCT in this department from Janauary 2007 to October 2013 were admitted.All the subjects were divided into 2 groups according to their own choice:22 pa-tients received rituximab treatment(treatment group)and 22 patients were treated without rituximab treatment(control group).For patients in treatment group,rituximab was used with chemotherapy or mobilization of stem cells before APBSCT for (2.9±1.1) times.After transplantation,IL-2 was used in both groups as maintenance treatment.And rituximab was used in the treatment group if the budget allows.Results The mononuclear cell count in treatment and control group was (13.01±4.22)×108/kg and (11.63±2.95)×108/kg(P=0.214).Hematopoietic reconstruction was successfully achieved in the both groups.No significant difference was found between 2 groups on the recovery time of neutrophilic granulocytes and platelets(P>0.05).All patients a-chieved complete remission(CR),at a median follow-up of 20 months(2-73 months),the disease relapsed in 2 patients in treatment group and 5 in control group.The 2-year overall survival rate in treatment group and control group were 95.0% and 75.1%,2-year progression-free survival rates were 82.4% and 74.5%,there were no significant difference between two groups(P=0.179, 0.393).Conclusion Rituximab combined with APBSCT in treatment of aggressive or refractory and recurrent B-cell lymphoma is feasible,however whether patients can benefit from long-term studies still need further research.Adding rituximab does not affect the hematopoietic stem cell collection and hematopoietic reconstitution.

Objective:To observe the therapeutic effect of felodipine in treatment of primary hypertension.Methods:Among 98 patients with primary hypertension (60 male,38 female,aged 56±4 years) recruited in the outpatient department,81 were treated with oral intake of 5 mg of felodipine once a day for a total of 8 weeks; 17 with the same dose of felodipine plus captopril.Results:The total effective rate was 90.8%,with 49.0% of the patients showing a significant improvement.Conclusion:Felodipine is effective for the treatment of primary hypertension,it can decrease the SDP up to 3.9±0.4 kPa.Meanwhile,the side effect is mild.

Objective To analyze the diagnostic value of human leukocyte antigen(HLA)-B27 expression for ankylosing spondylitis.Methods 100 patients with ankylosing spondylitis were selected as the study group. 100 healthy people were selected as the control group.HLA -B27 beads enzyme immunoassay reagent kits was used to implement qualitative detection of fresh whole blood in the study group,and compared HLA -B27 positive rates of the two groups,as well as the diagnosis value of HLA -B27 antigen expression.Results The HLA -B27 positive rate of the study group was 73.00%,which was higher than 9.00% of the control group,the difference was statistically significant (χ2 =84.66,P <0.01).The diagnosis rate of the male patients was 90.91%,which was higher than 72.41% of the female patients,the difference was statistically significant (χ2 =4.35,P <0.05 ).Conclusion HLA -B27 antigen has a high value for clinical diagnosis of ankylosing spondylitis,which is worthy of promotion.