OBJECTIVE:To discuss the effect of recombinant human growth hormone(HGH)on serum sndotoxin,inflamma-tory cytokines,wound healing time,hospitalization time and prognosis of elderly patients with severe burn. METHODS:96 elder-ly patients with severe burn in our hospital were randomly divided into treatment group (48 cases) and control group (48 cases). All patients received wound surface care,nutritional support,maintaining water and electrolyte and acid-base balance. Control group received 1 ml 0.9% Sodium chloride solution,sc,qd. Treatment group received 0.3 IU/kg. Recombinant HGH for injection, sc,qd. All patients were treated for 21 d. Serum endotoxin content in 2 groups before and 14,21 d after treatment was compared, inflammatory cytokines (TNF-α,IL-6, IL-8) before and after treatment,wound healing time,hospitalization time and the inci-dence of multiple organ disorder syndrome(MODS),death and systemic infection were observed. RESULTS:There was no signifi-cant difference in serum endotoxin content before and 14 d after treatment(P>0.05);after 21 d,serum endotoxin contents in 2 group obviously decreased,and treatment group was significantly lower than control group,with statistical significance(P<0.05). After treatment,IL-8 level in treatment group was significantly higher than control group,TNF-α and IL-6 were significantly lower than control group,with statistical significances (P<0.05). Wound healing time and hospitalization time in treatment group were significantly shorten than control group,with statistical significances(P<0.05). The incidence of MODS,death and systemic infec-tion in treatment group were significantly lower than control group,with statistical significances(P<0.05). CONCLUSIONS:The application of recombinant HGH in elderly patients with severe burn can reduce toxins absorption of patients and decrease inflamma-tory cytokines to promote wound healing and improve prognosis.

Objective To investigate the clinical effect of ilium grafting combined with Duhuojishengtang on the delay fracture healing and explore the effect on hemorheology. Methods Eighty patients with delayed fracture healing were randomly divided into two groups. Forty patients in control group were treated by ilium grafting and 40 patients in observation group were treated by ilium grafting combined with Duhuojishengtang. The clinical effect was observed after treatment and indexes of hemorheology were recorded after different treatment time. Results The cure rate of observation group was 62.5%, which was significantly higher than that of control group 35.0%, the effective rate of observation group was 92.5%, which was significantly higher than that of control group 72.5% (P<0.01) . There were no significant differences between two groups in indexes of hemorheology after ilium grafting (P>0.05) . After the first, second, third course, the indexes of hemorheology of observation group were better than those of control group, with statistically significant differences (P<0.05) . Conclusions Ilium grafting com-bined with duhuojishengtang can improve the indexes of hemorheology, improve the cure and effective rate and also has high security. It has high clinical value and worth of popularization and application.

Eleven-week-old SD rats were randomized into control and calorie restriction group. The pancreatic β cell function and oxidative stress indexes in the two groups were compared after 24-week intervention. The results showed that calorie restriction, which started from young age, improved the early insulin secretion after glucose loading and alleviated the oxidative stress in adult rats, which wag related to the reduction of body weight.

Objective To study the effect of calorie restriction at early age of rats on their islet β cell mass in adulthood.Methods Sixteen 8-week-old male SD rats were randomized to control group (n=7) and calorie restricted group (n =9).The rats in control group took food freely,while the ones in calorie restricted group were given 70％ calorie of the control group.After 24 week calorie restriction,cholesterol (TC),triglyceride (TG),high density lipoprotein-cholesterol (HDL-C) and low density lipoprotein-cholesterol (LDL-C) were tested.The β cell mass was measured by immunohistochefistry and the activity of superoxide dismutase (SOD) as well as the level of malondialdehyde (MDA) in pancreas homogenate were determined by ELISA.Results The increase of the body weights(45 g vs.184 g)and the level of TG [(0.61±0.15)mmol/L vs.(0.78±0.14)mmol/ L]of the rats in the calorie restricted group were lower than those of the control group (P＜0.05),while the β cell mass [(43.6±9.8)mg vs.(31.9± 11.6)mg],β cell mass of every milligram pancreas tissue[(89.7 ± 7.4) μg/mg vs.(44.8g ± 14.1) μg/mg] and β cell mass per body weight[(11.5±2.5) × 10-5 vs.(6.3 ±2.3) × 10-5]of the rats in the calorie restricted group were higher than those of the control group (P＜0.05).There were no differences in the SOD activity [(0.91±0.30)nmol/ mg protein vs.(0.68±0.14)nmol/ mg protein]and MDA level [4.97± 0.65)U /mg protein vs.(6.05 ±2.14)U/mg protein] in pancreas homogenate between the two groups (P＞0.05).Conclusions Calorie restriction at early age of rats may increase the islet β cell mass in their adulthood.

Objective To investigate the diagnostic value of improved pleural biopsy combined with biomarker and cytology detection in pleural effusion of unknown origin.Methods The clinical data in 216 cases of pleural effusion were respectively analyzed including 106 cases of tuberculous pleural effusion(tuberculosis group) and 110 cases of malignant pleural effusion(malignant group).All cases were performed the improved pleural biopsy,cytology examination and detection of pleural effusion ADA,CEA and LDH,and serum CEA.The pleural biopsy diagnosis rate was performed the statistics,and pleural effusion ADA,CEA and LDH,serum CEA,and pleural effusion CEA/serum CEA were compared between the two groups.Results Among 216 cases,241 times of pleural biopsy puncture were conducted,the first time puncture success rate was 94.9 ％ (205/216).Having the diagnostic value among pathological results of pleural biopsy materials in first puncture success accounted for 58.8％ (127/216),and the overall diagnosis rate was 65.3 ％ (141/216).The incidence rate of adverse reactions was 5.8 ％ (14/241).In the tuberculosis group,no case showed cytology tumor cell positive,while the cytology tumor cell positive rate in the malignant group was 54.5％ (60/110);pleural effusion CEA and LDH,serum CEA and pleural effusion CEA / serum CEA levels and positive rates in the malignant group were significantly higher than those in the tuberculosis group,while the pleural effusion ADA level and positive rate were significantly lower than those in the tuberculosis group the difference was statistically significant(P＜0.01).Conclusion Improved pleural biopsy,pleural effusion cytology,pleural effusion biomarkers have a certain limitation in alone auxiliary diagnosis of pleural effusion.The various indicators can be combined to determine the etiology of pleural effusion in clinic for guiding treatment.

AIM To investigate the significance of CGRP and ET in the coronary syndrome and the significance of their changes in the incidence of the acute coronary syndrome.Methods Group with UA group ( n =30), AMI group ( n =28), control group ( n =25) were established.In control group blood sample take on an empty stomach in the morning ,while group with AMI on hospitalization and after one week, group with UA at angina pectoris attack and after remission. The concentration of plasm CGRP and ET were measured .Results The plasm CGRP concentration in group with AMI was higher than that in group with UA and that in control group ,the plasm ET elevated markedly, while the rate of CGRP/ET decreased; Compared with that in the remission period of the acute coronary syndrome ,The plasm CGRP elevated, the plasm ET elevated markedly, while the rate of CGRP/ET decreased.Among defferent acute coronary syndrome ,the plasm CRGP and ET concentrantion was highest in AMI group,higher in group with accelerated UA, high in group with initial attack UA;the rate of CGRP/ET was highest in group with initial UA,higher in group with accelerated UA,high in group with AMI.Conclusions The changes of plasm CGRP and ET concentration are well correlated with the extent of coronary lesion, the level of plasm CGRP and ET and the imbanlance of thier receptor play an important role in the pathogenesis and development of acute coronary syndrome. [

BACKGROUND: Heat-activated nickel-titanium (HANT) wire is a new type of arch wire in orthodontic treatment, characterizing by well memory alloy ability and uneasily deformation. However, environmental temperature may affect its performance.OBJECTIVE: To compare the effects of HANT and common nickel-titanium wire in clinical application.METHODS: A total of 80 patients who have accepted and finished orthodontic treatment in the First Affiliated Hospital of Sun,Yat-sen University from July 2006 to November 2008 were randomly divided into two groups. The common group was treated with common arch wire in aligning and leveling stages, while the HANT group was treated using HANT in aligning and leveling stages. Tooth extracted cases were matched to non-tooth extracted cases. Indicators, such as time span for alignment, total treating time, times for wire breaking, times for bracket shedding, and times for return visits, were measured.RESULTS AND CONCLUSION: There was significant difference in treating time and times for wire breaking between the two groups (P < 0.05), but there was no significant difference in the times for bracket shedding. Anaphylactic response, toxic reaction,and other adverse reactions were not observed in the HANT group. Therefore, HANT wire can simplify orthodontic operation,shorten operation time beside the chair, save the total treating time, and reduce chances of shedding brackets and breaking wires.

Objective　To evaluate the effect of intravascular occlusion for carotid cavernous fistula (CCF) by analying the clinical features of CCF. Methods　Twelve cases with CCF were analysed on their medical histories, clinical features in the eyes, clinical examinations and the therapeutic effects of balloon occlusion in internal carotid artery.Results　Ten cases were treated successfully(83.33%), in which 2 cases were treated once more. There was no operation complication. The visual acuity of one case increased from no light perception to finger movement within 1 week preoperatively. The visual acuity of 10 cases improved 1～4 lines (Snellen chart). Some clinical symptoms and signs such as the lid, conjunctiva swelling, diplopia, the movement of eyeball and retinal hemorrhage were decreased remarkably. Carotid fistula of 12 cases with CCF were found to be occlusioned by digital subtraction angiography after operations.Conclusion　The early diagnosis and treatment for CCF are necessary. Color doppler flow imaging, CT and DSA are useful examination methods for diagnosis of CCF. Intravascular occlusion is the best therapeutic method for CCF nowadays.

Objective To investigate the effect of moldavica total flavone on pulmonary function and collagen type Ⅲ in lung tissue of ovalbumin-induced bronchial asthmatic rats. Methods A total of 60 SD rats were randomly divided into control group, model group, dexamethasone group, and moldavica total flavone low, medium and high dose group. Rat asthma model was established by ovalbumin challenge methods except the control group. The control and model group were intragastrically given distilled water, medicine groups were intragastrically given moldavica total flavone and dexamethasone for 30 d, once per day. After the last administration, the pulmonary function and airway responsiveness including breathing frequency (F), minute ventilation (MVb), peak inspiratory flow (PIFb), peak expiratory flow (PEFb) and enhanced pause (Penh) were measured by using non-invasive measurement system (Penh system, Buxco, USA). The collagen type Ⅲ in lung tissue were detected by ELISA. Results The moldavica total flavone at 180 and 360 mg/kg decreased F and Penh (P<0.05, P<0.01), increased MVb, PIFb and PEFb (P<0.05), and decreased collagen type Ⅲ in lung tissue (P<0.05, P<0.01). Conclusion Moldavica total flavone can relieve the airway hyperresponsiveness and remodeling, improve respiratory function of ovalbumin-induced bronchial asthmatic rats.

BACKGROUND:Olfactory ensheathing cells can promote the repair of the central nervous system. Composite engineering materials prepared by the combination of chitosan and col agen have been widely used in the construction of tissue-engineered nerve conduits.
OBJECTIVE:To explore the repair effect of olfactory ensheathing cells and chitosan in the treatment of sciatic nerve injury in rats.
METHODS:Rat models of sciatic nerve injury were prepared. Olfactory ensheathing cells combined with chitosan scaffold were used to connect the injured sciatic nerve. In the chitosan scaffold group, only the chitosan scaffold was utilized. In the control group, no treatment was done.
RESULTS AND CONCLUSION:At 1-4 weeks fol owing surgery, sciatic functional index and motion evoked potential were monitored and histological examination was performed. Sciatic functional index was significantly improved in the olfactory ensheathing cells+chitosan scaffold group (P<0.05). Motion evoked potential was significantly lower in the olfactory ensheathing cells+chitosan scaffold group compared with other groups (P<0.001). Histological examinations showed new nerve fibers and rare inflammatory reaction in the olfactory ensheathing cells+chitosan scaffold group. These findings indicate that autologous olfactory ensheathing cells combined with chitosan scaffold exerts good repair effects on treatment of sciatic nerve injury, and can be considered as an ideal tissue engineering material.