Diabetic microvascular disease is a severe complication of diabetes mellitus (DM).There are many hypoth-esis for its mechanisms.This overview aimed at effect of C-peptide,coagulant factors,platelet and D-dimer in dia-betic microvascular disease,and provided evidence for its prevention and treatment in clinic.

Objective To understand change and pathogenesis of microalbuminuria(MAU) in cases of adiposity.Method MAU were measured by immunoturbidmetric methods 300 cases of adiposity and 100 cases of nomal children in morning,meanwhile blood press,blood su-gar,blood fat,blood insulin were measured.Results MAU was higher in cases of middle and severe adiposity than normal controls.The diffe-rence was significant(Pa

Objective To observe the mammographic appearance of accessory breast tissue in the axilla. Methods In the past 3 years, 7 562 women were underwent bilateral screen-film mammography. All of the mediolateral oblique(MLO) films were reviewed retrospectively to look for whether there was accessory breast tissue and what the mammographic features were like. Radiographically the accessory tissue resembled the main normal breast glandular tissue but was separated from it. Results Of the 7562 cases, accessory breast tissue in the axilla was detected in 161 cases. The prevalence was 2%. The age ranged from 17 to 70 years (mean, 39 years). 38% of them were found in the bilateral axilla, 42% only in the right, and 20% only in the left. The dimensions on the right ranged from 0.7 to 8.0 cm (mean, 3.5 cm), and that on the left ranged from 1.0 to 7.0 cm (mean, 3.3 cm). There were four types among the accessory breast tissue: patchy type was the most (35%), then the branched type(26%),mixed type(20%), and mass-like type(19%). 3 cases were proved by pathology. Conclusion It is important that the radiologist be familiar with the mammographic appearance of accessory breast tissue in the axilla in order that they could be distinguished from other pathological changes.

The importance and necessity of undergraduates participating in the training plan of the medical research was clarified.Based on the actual ability of students and the characteristic of experimental teaching plan,we think that combination of experimental teaching of small group with research training is a strategy for enhancing the ability of the medical undergraduates to do research.This proposal will speed up the medical educational goal by the activation of novel idea,the cultivation of innovatory thought and the enhancement of creative ability.

Wnt signaling pathway is not only closely related to tumor invasion and metastasis,such as cancer cells migration and adhesion,extracellular matrix degradation,and angiogenesis,but also plays an important role in self-renewal,proliferation and differentiation of tumor stem cells.Progress has been made in high specific genes drug development and targeted therapy against the Wnt signaling pathway.

Objective To investigate the effect of dexmedetomidine on the cerebral injury in patients undergoing cardiac valve replacement under cardiopulmonary bypass (CPB).Methods Forty ASA Ⅱ or Ⅲ patients of both sexes,aged 43-64 yr,scheduled for elective cardiac valve replacement,were randomly divided into 2 groups (n =20 each):control group (group C) and dexmedetomidine group (group D).Dexmedetomidine 0.6 μg/kg was injected intravenously over 15 min before induction of anesthesia,followed by infusion at 0.2μg· kg-1 · h-1 until the end of operation in group D.While the equal volume of normal saline was given in group C.Blood samples were obtained from the radial artery and jugular bulb for blood gas analysis before CPB,immediatelv after declamping of the ascending aorta,at the end of CPB and at 6 h after operation (T1-4).The arteriovenous blood O2 difference (Da-jvO2) and cerebral O2 extraction rate (CERO2) were calculated.The plasma concentrations of S-100β and neuron-specific enolase (NSE) in the blood samples obtained from the jugular bulb were measured at T1-4 and 24 h after operation.Results Compared with group C,the jugular venous oxygen saturation was significantly increased and Da-jvO2 and CERO were decreased at T2,3,and the plasma concentrations of S100β and NSE were decreased at T2-4 in group D (P ＜ 0.05).Conclusion Dexmedetomidine can decrease the cerebral O2 metabolic rate and reduce the cerebral injury in patients undergoing cardiac valve replacement under CPB.

Objective To investigate the effects of penehyclidine hydrochloride combined with ulinastatin on lung injury in patients undergoing cardiac valve replacement with cardiopulmonary bypass(CPB).Methods Sixty ASA Ⅱ or Ⅲ patients of both sexes,aged 33-64,weighing 47-81 kg,NYHA class Ⅱ or Ⅲ ,scheduled for cardiac valve replacement,were randomly divided into 4 groups(n = 15 each): control group(group C),ulinastatin group(group U),penehyclidine hydrochloride group(group P)and penehyclidine hydrochloride + ulinastatin group(group PU).Group U,P and PU received iv injection of ulinastatin 20 000 U/kg,penehyclidine hydrochloride 0.05 mg/kg and ulinastatin 20 000 U/kg + penehyclidine hydrochloride 0.05 mg/kg 30 min after the end of CPB,respectively,while group C received equal volume of normal saline.Then PEEP was increased to 8 cm H2O in all groups.Blood samples were taken at 30 min,3 and 6 h after the end of CPB and 12 and 24 h after operation for determination of PaO2 and serum concentrations of TNF-α,IL-6,IL-8 and IL-10.Airway peak pressure and airway plateau pressure were recorded at the corresponding time points.Oxygen index(OI)and pulmonary compliance(CL)were calculated.Lung injury was scored at 6 h after the end of CPB and 12 and 24 h after operation.Results OI and CL were significantly increased and lung injury score was significantly decreased in group U,P and PU compared with group C(P ＜ 0.05 or 0.01),and in group PU compared with group U and P (P ＜ 0.05).Serum concentrations of TNF-α,IL-6 and IL-8 were significantly lower and the serum IL-10 concentration was significantly higher in group U,P and PU than in group C(P ＜ 0.05 or 0.01),and in group PU than in group U and P(P ＜ 0.05).There was no significant difference in the indices mentioned above between group U and P(P ＞ 0.05).Conclusion Penehyclidine hydrochloride combined with ulinastatin can attenuate lung injury by inhibiting inflammatory response in patients undergoing cardiac valve replacement with CPB.

Objective To observe the learning and memory ability,oxidative stress,apoptosis morphological changes in the hippocampus,and to explore the effects of hyperuricemia on cognitive function.Methods 51 healthy male SD rats were randomly divided into three groups (17 in each group):Blank group,Distilled water group and Hyperuricemia group.Using the lavage methods of yeast extract combined with ethambntol to establish hyperuricemic model.Morris water maze test was used to measure the learning and memory ability.The levels of MDA,GSH-Px,ASAFR,SOD were measured through chemical colorimetry.Hippocampus morphology structures were observed under the HE staining light microscopy to detect the apoptosis of hippocampus cone cell with TUNEL.Results The average escaped latency and passing platform times of Blank group had no significant difference compared with those of Distilled water group and Hyperuricemia group (all P＞ 0.05).GSH-Px,ASAFR,SOD of Hyperuricemia group ((83.70 ± 5.47) nmol/mg,(606.03±46.61) U/L and (55.05 ± 2.11) units/mg) were increased compared with those of Blank group ((67.28±8.37) nmol/mg,(473.84 ± 57.64) U/L,(45.79 ± 2.05) units/mg) and Distilled water group ((71.96±9.47) nmol/mg,(505.97 ± 47.19) U/L,(46.24 ± 3.65) units/mg) (all P＜ 0.05).Compared with Blank group ((3.19±1.14) μmol/L) and Distilled water group ((3.16±1.43) μmol/L),the MDA of Hyperuricemia group ((1.74±0.45) μmol/L) was significantly decreased (all P＜ 0.05).Form and structures of hippocampal neurons of each group were basically normal under the HE staining light microscopy.Compared with Blank group (CA1:(3.59±0.63) ％,CA3:(5.54± 0.78) ％) and Distilled water group (CA1:(3.25±0.97) ％,CA3:(5.96± 0.82) ％),the hippocampal cells of Hyperuricemia group (CA1:(4.04± 0.78) ％,CA3:(5.95±0.80) ％) also had no statistical differences (P＞0.05).Conclusion Hyperuricemia has antioxidant effect on hippocampal neurons and has no effect on cognitive function and hippocampal neural morphology in rats.

Objective To investigate the infiltration of inflammatory cells and the pathogenesis of nasal polyps. Methods the nasal polyps were obtained from 42 patients undergoing nasal operations. The tissues from each patient were stained with HE and Toluidine Blue for eosiophils, lymphocyte, plasma cell and mast cell and observed under the light microscope. A mean number of the above cells were counted. All data were analyzed with the Ttest. Results Eosinophils were found predominantly in 12 polyps(28.57％). Lymphocyte infiltration was shown in the other 30 polyps (71.43％). Furthermore, many mast cells with only a few eosinophils were found in the lymphocyte infiltration polyps; the number of mast cells in these polyps were much more than those in eosinophil accumulation polyps with a very significant difference(P＜0.01). Conclusion The accumulation of eosinophils in the nasal polyps does not appear to be related to the presence of mast cells and allergy. The disorder of immunity may play an important role in the formation of nasal polyps.

0.05).Conclusion Long-term inhaled glucocorticosteroids has no obvious effect on GH and height growth of asthmatic children.