Objective To investigate the relationship between plasma P substance(SP),atrial natriuretic peptide(ANP) and renal function in chronic renal failure(CRF).Methods SP and ANP were measured by radioi m munoassay in normal control and CRF before and after hemodialysis(HD),serum creatinine(Cr) was determined simultaneously.Results SP before HD was significantly higher than that of control(P

Objective To evaluate the effect of oral levothyroxine plus intrathyroidal injection of dexamethasone on conversion of subclinical hypothroidism caused by Hashimoto's thyroiditis.Methods 80 subjects with Hashimoto thyroiditis were randomly divided into 2 groups.Subjects in levothyroxine group(40 cases) were treated with oral levothyroxine sodium,subjects in dexamethasone group(40 cases) were treated with oral levothyroxine plus intrathyroidal injection of dexamethasone.Serum free triiodothyronine(FT_3),free thyroxine(FT_4),sentient thyrotropin(sTSH) and other parameters were evaluated before treatment and after treatment in patients with Hashimoto's thyroiditis.Results The content of FT_3,FT_4 after treatment were obviously higher than that before treatment(t=2.123,P

Objective To compare the clinical effect of different doses of oxycodone on endotracheal intubation during general anesthesia induction period.Methods Ninety-five patients with endotracheal intubation general anesthesia were selected as the research subjects,and the patients were randomly divided into group A,group B and group C.31 patients in group A received intravenous administration of oxycodone 0.20mg/kg,32 patients in group B received intravenous administration of oxycodone 0.25mg/kg,and 32 patients in group C received intravenous administration of oxycodone 0.30mg/kg.The adrenaline,norepinephrine,dopamine concentration,as well as mean arterial pressure and heart rate at different time points were compared among the three groups.Results The mean arterial pressure and heart rate at T0 time point were decreased to varying extent compared with those at T1 time point(t =23.618,7.412;22.928,9.063;32.636,9.422,P =0.000,0.000;0.000,0.000;0.000,0.000).The heart rate,mean arterial pressure at T2,T3 and T4 time points in group A were increased compared with T0 time point (t =13.834,6.506,7.015;17.604,14.796,16.323,P =0.000,0.000,0.000;0.000,0.000,0.000).The adrenaline,norepinephrine and dopamine at T2,T3 and T4 time points in group A were increased compared witb T0 time point (t =121.662,64.533,15.687;31.498,16.933,9.286;39.712,116.049,147.102,P =0.000,0.000,0.000;0.000,0.000,0.000;0.000,0.000,0.000).The heart rate,mean arterial pressure,adrenaline,norepinephrine and dopamine at T2,T3 and T4 time points in group B and group C were decreased significantly compared with those in group A (t =19.586,31.972,16.844,27.087;14.046,14.822,15.377,23.826;7.756,14.396,13.268,23.342,100.573,1 04.010,37.612,38.892,107.377,117.969;56.135,56.757,24.223,25.300,95.057,82.088;22.878,25.731,5.532,5.934,134.763,83.628,P =0.000,0.000,0.000,0.000,0.000,0.000;0.000,0.000,0.000,0.000,0.000,0.000;0.000,0.000,0.000,0.000,0.000,0.000;0.000,0.000,0.000,0.000;0.000,0.000,0.000,0.000;0.000,0.000,0.000,0.000),and the differences were statistically significant (all P ＜ 0.05).Conclusion During the induction of general anesthesia,the appropriate dose of oxycodone in patients with endotracheal intubation was 0.25mg/kg,which could effectively maintain the hemodynamic stability,such as mean arterial pressure,and could reduce the stress response.

Objective To study the status of telomerase activity during the development of thyroid tumors,and to determine whether telomerase activity can be used clinically as a molecular marker in the differential diagnosis of thyroid cancer.Methods Telomerase activity was measured in 37 thyroid carcinomas,33 benign thyroid lesions and 30 normal thyroid tissue samples by means of telomerase repeat amplification procedure-polymerase chain reaction(TRAP-PCR).The assay was also applied to 15 fine needle aspirates(FNAs) of thyroid carcinomas to test its sensitivity.Results Thirty-one of 37 thyroid carcinomas(83.8%),7 of 33 benign thyroid lesions(21.2%),and 4 of 30 adjacent normal thyroid tissue asmples expressed telomerase activity,15 FNAs also had positive telomerase activity,just as their corresponding tissue specimens.The quantitative analysis showed that the telomerase activity was significantly higher in thyroid carcinomas than that in benign thyroid tissue samples.And medullary carcinomas and anaplastic carcinomas had higher levels of telomerase activity than papillary carcinomas.Conclusion Telomerase activity is a good marker for thyroid carcinomas.The quantitative TRAP-PCR might have more potential application in the differential diagnosis of tumors and the estimation of tumor progression and prognosis.And this sensitive assay could become a useful new modality for supplementing microscopic cytopathology in the detection of cancer cells in small tissue samples and FNAs.

Objective To investigate the diagnostic and therapeutic methods for liver injury.Methods The clinical data of 80 patients with liver injury were retrospectively analyzed.Results The liver injury was srede Ⅰ in 12 patients.grade Ⅱ in 25 patients,grade Ⅲ in 20 patients,srede Ⅳ in 14 patients,and grade V in 9 cases.16 patients were not treated with operation,24 patients were treated with hepatic artery ligation,and 3 patients were treated with plugging.75 patients were cured,and 5 patients died.Conclusion Liver injury should be clearly diagnosed as early as possible,correct therapeutic methods should be selected according to the state of the injury,and operative manner should be reasonably selected according to intraoperative conditions.The treatment of complications and postoperative protection to the function of important organs should be paid attention to.

Drag-loaded nanoparticle is a new delivery cartier of drug and biomacromoleculc,which have many fortes such as target ability,permeability,controlled release ability and function of promoting cell differentiation.Polypeptide combined nanoparticles can deliver drugs to the targeted tissues by conjugating with specific ligands.Growth factor combined nanoparticles may have better curative effect by maintaining the activity of the growth factors longer.Nanoparticles can effectively deliver genes to the cells in the injured tissue for the enhancemem of the specific function of the cells.Three dimension nanometer fibrous structure combined with nanoparticle based drug delivery could significantly promote the growth of the cell.Magnetic nanoparticles are widely used for the targeted delivery of drugs or genes and separation of biomolecules.Drug loaded nanoparticles have been increasinsly used in tissue enginerring which have shown a tremendous potential.In the present paper,we reviewed the application of drug-loaded nanoparticles in the field of tissue engineering.

OBJECTIVE:To observe clinical efficacy and safety of tigecycline combined with isepamicin in the treatment of multidrug-resistant Acinetobacter baumannii pneumonia. METHODS:70 patients diagnosed as multidrug-resistant A. baumannii pneumonia were selected and randomly divided into control group and observation group,with 35 cases in each group. Both groups received routine treatment oxygen therapy or mechanical ventilation,anti-hypertension,hypoglycemic therapy. Control group was given Cefoperazone sulbactam for injection 3 g added into Sodium chloride injection 100 ml,ivgtt,qid. Observation group re-ceived Tigecycline for injection 100 mg,decreasing to 50 mg added into Sodium chloride injection 250 ml,ivgtt,bid,combined with Isepamicin sulfate injection 400 mg added into Sodium chloride injection 250 ml,ivgtt,qd. The time of body temperature re-turn to normal,pulmonary rale disappearance,chest X-ray shadow disappearance and leucocyte return to normal were observed in 2 groups as well as serum inflammatory factor level before and after treatment;total effective rate,bacterial clearance rate and ADR were compared between 2 groups. RESULTS:The time of body temperature return to normal,pulmonary rale disappearance, chest X-ray shadow disappearance and leucocyte return to normal in observation group were significantly shorter than in control group,with statistical significance(P<0.05). There was no statistical significance in serum inflammatory factor between 2 groups before treatment(P>0.05). The serum inflammatory factor of 2 groups decreased significantly after treatment,and the observation group was significantly lower than the control group,with statistical significance(P<0.05). Total effective rate and effective bacte-rial clearance rate of observation group were 85.7% and 82.9%,which were significantly higher than those of control group (62.9% and 60.0%),with statistical significance(P<0.05). There was no statistical significance in the incidence of ADR between 2 groups(P>0.05). CONCLUSIONS:Tigecycline combined with isepamicin is effective for multidrug-resistant A. baumannii pneu-monia,and can improve clinical symptom,control inflammation reaction,having high sterilization with good safety.

Randomly divide the said patients into 2 groups,32 cases in treatment group treated with head skin and abdominal acupuncture,body acupuncture for the control group of 28 cases.The result shows the cure rate is 56.25% for treatment group,37.5% for control group.By comparison,P

Chitosan has drawn more and more attention for their particular biological effect. Nanometer materials displayed great perspective in medical application. In the present paper, we reviewed the biological characteristic of chitosan, the preparation methods of chitosar nanoparticles, as well as the applications of chitosan and chitosan nanoparticles in tissue engineering.

Objective To explore the preoperative misdiagnosis in the breast cancer and the methods to improve the diagnostic accordance rate. Methods The preoperative diagnosis and results of 358 cases with breast cancer has been analysized retrospectively in the recent ten years. Results Total Cases with present diagnostic technique diagnosed befor operation was 176 only;the accordance rate was less than 50%.With aspiration biopsy and molybdenum palladium roentgenograph,the rate was 25%(79 cases).The actual preoperative accordance rate was less than 10%(32 cases).It is said approximately 90% cases were postoperatively diagnosed. Conclusion The present excision biopsy not only has made many patients lost the chance of chemotherapy preoperation, but also interferenced the application of new therapic methods in the clinical practice.Infrared spectroscopy and ultrasonography have been commonly used in the clinical practice.With the low diagnostic accordance rate,they were applied only for screening.With simplity and high diagnostic accor dance rate,aspiration biopsy and molybdenum pall adium roentgenograph should be enrolled extensively in the clinical practice. The puncture and specimen fixing technique also should be improved.