Objective To investigate the effect of human growth hormone antagonist (GHA) on diabetic nephropathy in mice. Methods Thirty nine C57BL male mice were divided into five groups: normal control, diabetic control, two GHA diabetic mice groups, human growth hormone (hGH) diabetic group. Diabetic mice were induced with Streptozotocin. hGH, GHA1 〔del(1 4), G120R, K168A, E174A, C182S, del(186 191) Cys 1〕 and GHA2 〔H21A, G120R, E174A〕, were respectively administered subcutaneously to diabetic mice for eleven weeks, the effects of them on body weight, urinary protein excretion and renal morphology in mice of all groups were observed. Results All diabetic mice showed growth retardation including hGH and GH antagonist groups when comparing with their nondiabetic mice. The results of kidney histology showed a significant increase in glomerular area 〔hGH:(4289?798)?m 2, DM:(4226?894)?m 2,GHA1:(3511?717)?m 2, GHA2:(3428?919)?m 2, Normal control:(3399?573)?m 2〕 and cell proliferation (hGH:37.4?5.5, DM:34.5?6.4, GHA1:31.1?6.5, GHA2:29.2?6.5, Normal control:29.0?6.0) in hGH and DM control groups compared with two GH antagonist groups and normal control group, but the expansion of mesangial area with increased extracellualar matrix existed in all diabetic mice, no significant difference was observed among diabetic groups. No statistical difference was found among diabetic groups in urinary protein excretion. Conclusion hGH may aggravate glomerular hypertrophy and mesangial cell proliferation in diabetic mice, and hGH antagonists are effective in preventing diabetic mice glomerular hypertrophy, mesangial cell proliferation and maintaining integrity of kidney normal morphology in diabetic mice.

Objective To investigate the expressions and effects of EGR-1, p53, p16, Cyclin D1 in Nasopharyngeal Carcinoma (NPC). Methods Expressions of EGR-1, p53, p16, and Cyclin D1 protein in paraffin-embedded specimens of 29 chronic nasopharyngitis, 45 NPC and 24 lymph-node metastasis were studied by immunohistochemical method (SABC). Results The positive rates of EGR-1, p16, and Cyclin D1 protein expressions in chronic nasopharyngitis were 44.83 %(13/29), 89.66 %(26/29) and 24.14 %(7/29) respectively, but no p53 protein expression. In NPC, the positive expression rates of the four proteins were 22.22 %(10/45), 91.11 %(41/45), 53.33 %(24/45) and 66.67 %(30/45), with significant difference compared with chronic nasopharyngitis respectively; and in lymph nodes metastasis were 16.67 %(4/24), 79.17 %(19/24), 70.83 %(17/24) and 75.00 %(18/24) with significant difference compared with those of chronic nasopharyngitis and NPC respectively except for p16 protein. Spearman correlation analysis showed that there were no significant correlation between the expression of EGR-1 and p53, p16, Cyclin D1 respectively both in NPC and in lymph nodes metastasis. In NPC, the expression of p53 showed a positive correlation with the expression of p16; and in lymph nodes metastasis the expression of Cyclin D1 showed positive correlation with the expressions of p16 and p53. Conclusions The expression of EGR-1 protein was significantly decreased both in NPC and in lymph-node metastasis, which suggested that Egr-1 gene may be a tumor suppressor gene and have an important effect in the pathogenesis and the progression of NPC. The overexpression of p53 and Cyclin D1 also have an important role in NPC, but p16 probably have no biological significance in NPC.

This paper presented the practice of Zhejiang in introducing the drug zero-profit reform.A comparative analysis was made to the pilot county hospitals regarding their business performance,patients' burden,financial subsidy and medical insurance expenditure.The reform has scored a success as expected with the following outcomes:sharp rise in medical services volume,medical income and financial aid on one hand; drop of the proportion of drug income and changes in the medical income makeup; controlled increase of average cost of outpatient and inpatient care,and significant drop of pharmaceutical costs; increased expenditure yet stable operation of medical insurance funds;proportional increase of medical insurance compensation,with drops of the proportion of both out-ofpocket expenses and visits to doctors out of their county.This reform,however,has such shortcomings as follows:insufficient adjustment toward true costs of medical services,lack of a clear and sustainable financial compensation mechanism,and that of supporting measures.Based on these,the authors call for accelerated payment system reform,dynamic and scientific adjustment of medical service prices,exploration of clear financial compensation methods,optimization of internal management of hospitals,and acceleration of the formation of a medical staff income distribution mechanism.

Objective To discuss the clinical diagnostic and guiding treatment value of changed positions of hyoid bonein the upper airway of patients with obstructive sleep apnea hypopnea syndrome. Methods 128-slice computed tomography was performed for 52 patients with severe OSAHS and 32normal healthy people to measure thehyoid bone in the upper airway in sober state and Muller maneuver. The correlationsbetweenthese indexes were analyzed under linear relation. Results (1)In comparison of the Muller maneuver with sober state , chinnodules and palatal plane to the hyoid in the OSAHS group were statistically higher than the healthy controlgroup (P < 0.001). (2)The distance of hyoid to chinnodules in the OSAHS group was significantlylonger and greater than that of the healthy control group (P < 0.001).(3)The distance of palatal plane to the hyoid was positively correlated with AHI , while thedistances of palatal plane andchinnodules to the hyoidwere both negatively correlated with MSaO2. Conclusion The changes ofhyoid positionare indicative for the clinical diagnosis and is helpful for the guidance of clinical treatment of OSAHS.

Objective To evaluate the value of 128-slice CT on locating the obstruction site of the upper airway in obstructive sleep apnea hypopnea syndrome (OSAHS)patients by three-dimensional reconstruction technology.Methods There were 52 patients with OSAHS diagnosed by the PSG and 32 cases of healthy volunteers in our hospital.All objects were performed 128-slice CT scan of the upper airway during awake state,and those patients’upper airways were scaned on Muller test.The airway volume of the ret-ropalatal region,retroglottal region and epiglottal region,and the total length of upper airway were measured,and statistical analysis of the each index was obtained.Results During awake state,compared with the control group,the length of upper airway in OSAHS patients increased significantly(P <0.001).Compared with the awake state,OSAHS patients’airway volume of the retropalatal region, retroglottal region and the total airway volume on the Muller test were reduced significantly(P <0.001).OSAHS patients’upper air-way length was correlated negatively to the average MSaO 2 (r=-0.33,P <0.05).Conclusion The three-dimensional reconstruc-tion of upper airway on 128-slice CT can evaluate the position and degree of the obstruction site in OSAHS patients’upper airway better,which has important significance to guide clinical treatment.

OBJECTIVE: To discuss the soft palate, hard palate and mandibule for the pathogenesis and clinical treatment of patients who have obstructive sleep apnea hypopnea syndrome. METHOD: There were 52 patients with OSAHS diagnosed by the PSG and 32 cases of normal healthy volunteers in our hospital. All objects were given 128 slice spiral CT scan of the upper airway. We measured the related indexes of the soft palate, hard palate and mandible, then analysed statistical differences between them and did Pearson correlation analysis with apnea hypoventilation index (AHI), average blood oxygen saturation (MSaO2) in PSG. RESULT: Compared with the control group, the soft palate length [(37.93 ± 5.20)mm VS (33.52 ± 4.25)mm] and the distance between mandible with cervical vertebra [(75.00 ± 7.10)mm VS (69.93 ± 5.58)mm] increased significantly, but the distance of trailing edge of hard palate to inferior margin of slope significantly reduced [(42.57 ± 4.52)mm VS (45.80 ± 2.94)mm, P < 0.01] in patients with OSAHS. Each measurement associated with AHI and MSaO2 had no significant correlation (P > 0.05). CONCLUSION The soft palate, hard palate and mandibular are some of the important risk factors of OSAHS, and they also have reference value for the choice of clinical treatment operation. Preoperative CT examination can offer help in the treatment of OSAHS.
Case-Control Studies ; Humans ; Mandible ; anatomy & histology ; Oximetry ; Palate, Hard ; anatomy & histology ; Palate, Soft ; anatomy & histology ; Sleep Apnea, Obstructive ; diagnosis ; Tomography, Spiral Computed

Objective To study the expression and clinical significance of phosphorylated AKT (pAKT) and phosphatase and tensin homolog (PTEN) in colorectal carcinoma tissues.Methods The expression of pAKT and PTEN were detected by immunohistochemical SP method in 112 case of colorectal carcinomas tissue.Results The positive rates of pAKT and PTEN expression were 79.5 ％ (89/112) and 47.3 ％ (53/112) in colorectal cancerous tissues,respectively,which showed a statistically significance when compared with those in adjacent normal and adenoma tissues.The positive rate of pAKT expression was closely related with the invasive depth,clinical staging and lymph node metastasis of colorectal carcinomas.The positive expression of PTEN was also closely related with the invasive depth,degree of differentiation,clinical staging and lymph node metastasis of colorectal carcinomas.The expressions of pAKT and PTEN were negative correlaed.Conclusion The results showed that the expression of pAKT and PTEN were closely related with progression and metastasis of colorectal carcinomas,which may provide a new therapeutic target for colorectal carcinomas by blocking PTEN/PI3K/AKT signaling pathway.

Objective Nanoknife,also called irreversible electroporation,is a new technique of tissue ablation.Short,microsecond electrical pulses with high voltage are applied to the cell membrane,causing pores to form within the membrane and finally leading to cell death.The current study was to investigate the efficacy and safety of the nanoknife in the ablation of the healthy pig pancreas.Methods Three healthy pigs underwent open pancreatic tissue ablation with nanoknife,and blood leukocytes and amylase were detected before and after treatment.Three pigs were sacrificed and gross specimens were collected on day 5,day 10 and day 15 after the procedure,respectively.HE staining and TUNEL staining were conducted and tissue,cellular and subcellular structures were observed under the ordinary microscope and transmission electron microscopy.Results Three experimental pigs recovered well after the procedure.No significant adhesions were found surrounding the pancreatic tissue,and the ablation zone was slightly harder.Transiently increased leukocyte count and amylase level were observed after the ablation,which decreased to the normal level on day 3 after treatment.Under light microscope,the pancreatic tissues in ablation zone appeared to be significantly different from the normal surrounding regions,with more cell death and more apoptotic cells detected by TUNEL staining.The subcellular structure changes also changed under electron microscope.But the main pancreatic duct and its large branches,together with arteriovenous distributions did not change much.Conclusions Nanoknife pancreatic tissue ablation can induce irreversible damage.In the ablation area,pancreatic duct and vascular structures are kept intact.Within a reasonable voltage range and appropriate electrical pulses setting,nanoknife ablation is safe in vivo experiment.

The authors reviewed the practice of integrated health care delivery system( IDS) at home and abroad, and based on experiences of collaborations between medical service institutions in Zhejiang province,proposed the strategic positioning,responsibilities and service innovation of urban public hospitals in a regional medical service system. It is held that the direction of China′s health care reform should move towards IDS in the future,and such hospitals should play an active role in the process via integration of its own resource and provide multi-level,diversified services for the regional health care system.

Objective To investigate the preventive effect of nano-powder of Wugong-sanqi (NW),the rhizome of Anemone flaccid,on postoperative intestinal adhesion in rats.Methods Fifty SD rats were subjected to operation with Ellis' method for establishing intestinal adhesion models,then randomly divided into 5 groups (n=10),namely model,positive (Dexamethasone,i.m.10 mg/kg),NW high,medium and low dose group (p.o.450,225 and 112 mg/kg,respectively).Another ten normal rats were selected as normal control group.After administration 3 days pre-operation and 7 days post-operation,all of rats were killed,the intestinal adhesion was graded and the tissues were observed by optical microscope.Results NW evidently reduced the severity of postoperative adhesion (P＜0.05 or P＜0.01),compared with model group.The histopathologic changes such as proliferation of fibroblast cells and capillary,interstitial granulomas and inflammatory cells infiltration in intestinal tissues were also improved significantly in NW groups.Conclusion NW could inhibit the formation of postoperative intestinal adhesion effectively.