AIM: To study the effects of guava polysaccharides on blood glucose level and antioxidant activity in alloxan-induced diabetic mice. METHODS: The animal model of diabetes was established by injecting alloxan into mice abdominal cavity.The mice were divided into five groups: normal control group,diabetic model group,guava polysaccharides group I,guava polysaccharides group II,glybenclamide group.Blood glucose level was determined with blood glucose monitor 3 d and 10 d after being given polysaccharides.The mice were anaesthetized and killed on the tenth day.Activity of SOD and concentration of MDA in blood serum and liver were determined. RESULTS: Compared with diabetic model group,the blood glucose level of guava polysaccharides group I and guava polysaccharides group II significantly decreased.Activity of T-SOD in blood serum and liver significantly increased,while concentration of MDA in blood serum and liver significantly decreased. CONCLUSION: Guava polysaccharides can significantly decrease blood glucose level and improve the antioxidant activity of diabetic mice.lt is a potential hypoglycemic agent.

Objective To observe the distribution of cornea Q value in adult myopia,and its relationship with age,sex,eye and refraction.Design Prospective case series.Participants Consecutive 510 patients (1020 eyes) of myopia of adults.Methods Cornea Q values were obtained with OrbscanⅡz Anterior Segment Analysis System in all subjects of adult myopia.Normal distribution test of Q value and correlation analysis with sphere,cylinder,sex,and age were performed.Main Outcome Measures Q value of cornea,corre- lation coefficient.Results In 1020 eyes of adult myopia,the mean Q value was-0.27?0.16 (range from-0.86 to 0.25) with near nor- mal distribution.The difference of Q value between right eyes and left eye was not statistically significant (P=0.675).The Q value be- tween male (-0.26?0.15) and female(-0.27?0.17) was not statistically difference(P=0.697).No significant relation was found Q value with either sphere (r=0.057,P=0.068) or cylinder (r=0.044,P=0.156).Mean Q value of below 20 years old was maximal,-0.24,while over 40 years old was minimal,-0.36,and the difference were statistically significant (P=0.000).Conclusions Q value of cornea has negative shift with the increase of age,especially in over 40 years old.Q value of cornea has no relationship with left or right eyes,sex and refraction,but it is highly customized.

Objective: The scavenging capacity of free radicals by enzymes-hydrolyzed wheat bran (EHWB) and its protection against DNA damage were studied in vitro. Method: EHWB, prepared by hydrolyzing de-starched wheat bran using enzymes from Aspergillus niger fermentation, was used to test its scavenging capacity of free radicals and protection against DNA damage caused by hydroxyl free radical in vitro. Results: The capacity of scavenging free radicals by EHWB was shown, and EHWB could protect DNA damage caused by hydroxyl radicals. Conclusion: EHWB has higher free radicals scavenging capacity.

Objective To explore achillis tendon-sliding procedure and subtalar joint capsula release by the same cut and individualization treatment used in the correction of congenital clubfoot.Methods Forty eight cases (76 feet) of congenital clubfoot who were first visit were treated by achillis tendon-sliding procedure and subtalar joint capsula release by the same cut,meantime,footplate fascia release and transfer of the anterior tibial tenden were made by individualization.Results All cases were followed-up,the average time follow-up was 1 year and 6 months,excellent were 71% and good were 15.7%.Five cases were recurrence and its rate was 6.94%.Conclusions Achillis tendon-sliding procedure and subtalar joint capsula release by the same cut can solve rotation of displacement between calcaneus and talus and individualization treatment can also solve high arch deformity and adduction of foot.This technique is a simple,safe and effective treatment for congenital clubfoot.

Objective To investigate the changes in serum levels of nitric oxide ( NO) and endothelin ( ET) in type 2 diabetes patients with vascular complications, and to analyze the relationship between these levels and risk factors.Method We selected 98 cases of type 2 diabetes patients.Based on the grouping criteria, the patients were divided into diabetic patients with vascular complications ( group A,49 cases) and those without ( group B,49 cases) .In addition, 44 age-and body mass index-matched healthy cases were selected for control(group C).Height, weight, blood pressure, duration of diabetes, fasting blood glucose, hemoglobin A1c ( HbA1c), blood lipids, and serum levels of NO and ET-1 of all the patients were recorded.Results The NO levels of the two groups with diabetes mellitus were significantly lower than in group C[(43.87 ±12.05)and (53.29 ±11.75)μmol/L versus (66.08 ±16.48)μmol/L, P<0.01], while the ET-1 levels of the two groups with diabetes mellitus were significantly higher [(100.25 ±20.34) and (77.55 ±14.84) versus (53.62 ±8.40)ng/L, P<0.01] than those of the group C.The NO levels of group A were significantly lower than in group B [(43.87 ±12.05) versus (53.29 ±11.75)μmol/L, P<0.01].Moreover, the ET-1 levels of the group A were significantly higher than in group B [(100.25 ±20.34) versus (77.55 ±14.84)ng/L, P<0.01].Between the two diabetic groups, group A showed significantly higher systolic blood pressure(SBP), diastolic blood pressure(DBP), HbA1c, and course than group B (P<0.01).Correlation analysis showed a negative correlation between SBP, DBP, fasting blood glucose, HbA1c, and NO a positive correlation between high-density lipoprotein cholesterol ( HDL-C ) and NO, a negative correlation between HDL-C and ET-1, and a positive correlation between SBP,LDL-C, uric acid, fasting blood glucose, HbA1c, and ET-1.Conclusion The serum levels of NO and ET-1 in diabetic patients are evidently abnormal.Vascular endothelium injury will become more serious in patients with complications.Therefore, the serum levels of NO and ET-1 in diabetic patients are correlated with control of blood glucose, blood pressure, and blood lipid levels.

Objective To observe the effects of hyperbaric oxygen (HBO) on cerebral small vessel disease (CSVD) and on learning,memory and the expression of brain-derived neurotrophic factor (BDNF) and acetylcholine (Ach) in the cerebral cortex and hippocampus.Methods Sixty healthy,male Wistar rats were studied.Allograft thrombosis particles 48 to 74 μm in diameter were injected into the rats' external carotid arteries to create a CSVD model.The rats were then divided randomly into a hyperbaric oxygen group,a nimotop group and a control group.The hyperbaric oxygen group rats were given hyperbaric oxygen therapy 12 hours after the modeling.The nimotop group rats were given nimodipine by intragastric perfusion 12h after the modeling.The rats in the control group had no special intervention.At 7,14 and 28 days after the modeling,any changes in learning and memory were assessed with a Morris water maze test.Enzyme-linked immunosorbent assay (ELISA) was used to detect the expression of BDNF in the cerebral cortex and of Ach in the hippocampus at 28 days.Results At both 14 and 28 days the average escape latency of the rats in the hyperbaric oxygen group was significantly shorter than those of the nimotop and control groups.The average platform crossing time had increased significantly more than in the nimotop and control groups.At both 14 and 28 days the escape latency and platform crossing times of the nimotop group were significantly better than in the control group.Ach content and BDNF content were significantly higher in the HBO group than in the nimotop and control groups.Conclusions Hyperbaric oxygen treatment can promote BDNF release in CSVD,which is helpful to protect and repair neural mitochondria,to maintain the cortex and hippocampal neurotransmitters on a stable level,and to improve learning and memory.Its effect is better than that of nimotop.

Objective To establish an immunohistochemical method for postmortem diagnosis of electrocution. Method 12 rats were divided into two groups,experimental and control. In the experimental group,6 rats were killed by electricity,and in the control group,6 rats were killed by breaking the rats' neck. Myocardium sections were then made and were stained by SABC immunohistochemical method as well as HE.Results The expression of the fibronectins in the experimental rats' myocardia were significantly increased as compared with those in the control rats (P

AIM:To investigate the effect of ?-cyclodextrin inclusion on transdermal absorption of volatile oil in lilac-cassiabark Gel. METHODS: The release test of two kinds of lilac-cassiabark Gel(gel A without ?-cyclodextrin inclusion and gel B with ?-cyclodextrin inclusion) was assayed with Franz diffusion cell with the help of the cumulative amount of eugenol in unit area in vitro. RESULTS: The percutaneous absorption process of eugenol in two kinds of gels were conformed to zero-order releasing model,and the transdermal rates were 16.212?4.128 and 11.344?1.929 ?g/(cm~2?h) respectively.Compared with gel A,the transdermal rate of eugenol was slower in gel B(P

Objective To analyze the distribution of reproductive tract infection(RTI)pathogens and the drug sensitivity of My-coplasma in infertile women.Methods Experimental examinations of the pathogens related to RTI were performed in 260 cases of infertile women(test group)and compared with 260 cases of pregnant women(control group).Results In test group,the positive rate of RTI pathogens was 61.2%.The top 3 pathogens were Mycoplasma (47.7%),Candida (30.0%)and bacterial vaginosis (BV)pathogens(16.7%).There were significant differences of BV pathogens,Mycoplasma,and pH value between test group and control group(P <0.05).And the differences of other pathogens and the cleanliness were not significant between test group and control group(P >0.05).The drug sensitivity rates of Ureaplasma urealyticum to doxycycline and minocin were above 90%,and which to quinolone was less than 40%.Conclusion BV pathogens and Mycoplasma infection is one of the important factors which could affect women infertility.It is necessary to strengthen the monitoring and rational use of antimicrobial agents.

Objective To detect the micrometastasis status and necessity of dissection of lymph nodes of hepatodudenal ligament in advanced gastric antral cancer. Methods Eighty-six lymph node samples of hepatodudenal ligament which were negative in routine pathological examinations were collected from 45 gastric antral cancer patients with radical dissection.The expressions of CK20 mRNA were detected for the existence of micrometastasis by RT-PCR. Results Micrometastasis was found in 46 out of 86 lymph nodes(53.49%) and 23 out of 45 patients(51.11%),significantly different from the routine pathological examinations(both P