This study is to establish the gastric cold model of rats. After gastric feeding with cold water for 5 weeks and extra iced water bath in the last 2 weeks, model group show distinct physical sign of gastric cold syndrome. The pathology of gastrics reveals gastricism of model group, while treatment group(treated with Fanzuojin Wan) show mild lesion. Elisa detection of model group show that the solution of interleukin-2 (IL-2) is higher than blank group. The difference with significance among model group, treatment group and blank group reveals the success of the establishment of gastric cold syndrome.
Animals ; Cold Temperature ; Disease Models, Animal ; Female ; Humans ; Male ; Rats ; Rats, Wistar ; Stomach ; chemistry ; metabolism ; pathology ; physiopathology ; Stomach Diseases ; metabolism ; pathology ; physiopathology

This study is to establish the gastric hot model of rats. After gastric feeding with ethanol solution for 3 weeks and feeding with extra capsaicin and ethanol solution for another 2 weeks, model group show distinct physical sign of gastric hot syndrome. The pathology of gastrics reveals gastricism of model group, while treatment group (treat with Zuojin Wan) shows mild lesion. Elisa detection of model group show that the solution of interleukin-2 (IL-2) is higher than the blank group. The obvious difference among model group, treatment group and blank group reveals the success of the establishment of gastric hot model.
Animals ; Disease Models, Animal ; Drugs, Chinese Herbal ; administration & dosage ; Eating ; Female ; Humans ; Male ; Rats ; Rats, Wistar ; Stomach Diseases ; drug therapy ; pathology ; physiopathology

BACKGROUND: Posterior transarticular screw fixation (Magerl’s) is recommended for atlantoaxial instability. However,some patients do not suit for Magerl’s fixation. OBJECTIVE: To evaluate the clinical outcomes of atlantoaxial pedicle screw system in the treatment of atlantoaxial instability from odontoid fracture. DESIGN,TIME AND SETTING: The retrospective case analysis was performed at the Department of Orthopedics,Sichuan People’s Hospital between July 2004 and June 2007. PARTICIPANTS: Twenty-one cases of atlantoaxial instability from odontoid fracture were selected. According to Anderson and D’Alonzo classification,9 of them belonged to type II odontoid fracture with atlantoaxial instability and 12 to type Ⅲ with severe atlantoaxial dislocation. All cases suffered pain at occipitocervical part and limited activities of cervical spine. According to Frankel classification in function of spinal cord,16 cases of them belonged to Grade E and 5 cases to D. METHODS: All cases were fixed with C1 and C2 pedicle screws system following skull traction and reduction. MAIN OUTCOME MEASURES: Biocompatibility between materials and host; bone graft fusion and functional improvement. RESULTS: No vertebral artery injury or spinal injury was found during operation,neither incision infection was. All cases were followed up for at least 8 months. Postoperative radiograph and CT detection revealed good positions of all screws with no loosening or breakage. All fractures healed within 5 months,and activities of cervical vertebra were not obviously limited except slightly limited rotation function. As for nerve function,5 cases of Grade D recovered up to Grade E. CONCLUSION: Posterior pedicle screw fixation system exhibits no specific biocompatibility responses. It greatly improves atlantoaxial stability and promotes functional recovery of spinal cord but has little influence on cervical function.

Objective To explore the way to reduce the absorption of irrigating fluid during PCNL. Methods The amount of absorbed fluid during PCNL in 20 cases (13 males and 7 females)was monitored by ethanol method. The average age was 40 years old. The maximum diameter of calculi by average was 25 mm. Heart rate and mean arterial pressure were monitored during operation.Haemoglobin concentration, serum Na+, K+, Cl-, carbon dioxide-combining power and serum creatinine were measured before and after operation. The amount of irrigating fluid, the duration of operation, and the intrapelvic pressure were recorded. Results The absorbed volume of irrigating fluid in 20 cases was from 50. 2 to 685.0 ml. There was no significant difference in heart rate, mean arterial pressure, serum Na+ , K+ , Cl- and serum creatinine between pre-operation and post-operation(P>0.05), but the postoperative haemoglobin concentration (130.4±16.3 g/L) and carbon dioxide-combining power (24.1±3.2 mmol/L) were lower than that before operation( 142.6±15.6 g/L,26.4±2.0 mmol/L), the differences were significant (P<0. 05). The mean volume of absorbed irrigating fluid in patients with the cumutative time of the intrapelvic pressure higher than 30 mm Hg >10 min,the duration of operation >1 h, or the amount of irrigating fluid >10000 ml was 381. 1, 301.6,261.6 ml respectively, which was higher than that in the other cases (142.9, 136.4, 130.2 mi), the differences were significant (P<0.05). Conclusions The ethanol method is simple, convinent,safe, valid, and is suitable for patients with compromised cardiorespiratory or renal function, who are more likely to develop volume overload because of fluid absorption.

Objective To observe the therapeutic effect of acupuncture therapy for the rat model of type 2 diabetes mellitus (T2DM) combined with renal hypertension and try to explore its mechanism. Methods We randomly select 10 Wistar rats as the blank group and 40 rats were used to make the model groups, which were divided into simple diabetes group, simple renal hypertension group, the compound group with electroacupuncture and the compound group without elec?troacupuncture, with 10 rats in each group. After a high fat and sugar diet for 4 weeks, the Wistar rats were given strepto?zotocin i. p. injection to establish models of type 2 diabetes mellitus. Renal hypertension was developed by the“2K1C” im?proved method to make unilateral renal artery ligation?induced renal artery stenosis. Then, electroacupuncture treatment was performed on the rats for 2 weeks except the compound group without electroacupuncture. The changes of values of BP, FBG, Cr, BUN, glycated hemoglobin, renin and Ang II were recorded and analyzed. Results The values of BP, FBG, Cr, BUN, glycated hemoglobin, renin and Ang II in the compound group with electroacupuncture showed a significant re?duction compared with the compound group without electroacupuncture after 2 weeks (P<0?01), but there was no obvious changes in the values of Cr and BUN(P>0?05). Conclusions The blood glucose and blood pressure in the rat model of compound group can be reduced to a normal level with continuous electroacupuncture at bilateral acupoints Zusanli, and it can also be kept at a stable level after single electroacupuncture for 2-3 days. The acupuncture therapy is more suitable for early clinical treatment and can be used in basic research with advantages of economic, safe, no side effect and so on.

Objective: To investigate the effects of mouse recombinant Periostin on the attachment and proliferation of PDL cells on root surfaces. Methods: Normal (N) and periodontitis (P) root slices were treated with Periostin (Pe) and fibronectin (FN), respectively. Untreated root slices (Co) served as negative controls. PDL cells were seeded on the root slices, the attachment in 24h and the proliferation in 72h of the cells were determined with cell counting. The morphology of the cells was observed under SEM. Results: After 24h cultured, the cells on each mm3 on the root slices of PeN, FNN, CoN, PeP, FNP and CoP were 498. 00?31. 75, 513. 04?27. 52, 432. 88?20. 57, 336. 51 ? 27. 66, 348. 44?30. 23 and 237. 87?32. 54 respectively ; after 72h those were 683. 33? 28. 05, 774. 62?42. 25. 603. 21 ? 19. 76, 510. 52? 28. 31, 579. 19 ? 31. 58 and 445. 92?26. 30 respectively. Conclusion: Periostin can promote the attachment and proliferation of PDL cells on both diseased and healthy root surfaces.

0.05). On day 4, GI, SBI and OS were lower than those on day 1 (P0.05). On day 8, the parameters were lower than those on day 4(P0.05). Conclusion: 1 g/L cetylpyridinium chloride is effective in the treatment of simple gingivitis.

AIM: To evaluate the clinical outcomes and evaluate the application value of pedicle screw system internal fixation in short segment for the treatment of Hangman's fracture. METHODS: A retrospectively analysis was conducted in 17 cases of Hangman's fracture who were treated in Department of Orthopaedics, Sichuan Provincial People's Hospital since 2004. According to Levine-Edwards classification, 4 of them belonged to type II, 6 type IIA, 7 type III. According to Frankel classification in function of spinal cord, 12 cases of them belonged to Grade E and 5 cases D. All cases were fixed with C2,3 pedicle screw system short segment implantation materials (product of Medtronic Sofamor) after skull traction and reduction. RESULTS: No vertebra artery injury or spinal injury was found during operation. Postoperational photograph and CT detection revealed bilateral fracture had no reduction in 1 case and cerebrospinal fluid leaking occurred in 1 case who was cured after conventional therapy. All cases were followed up for 12-24 months (average 14.5 moths). All fractures healed within 6 months, and activities of cervical vertebra were not obviously limited. As for nerve function, 4 cases of Grade D recovered up to Grade E. Ti-alloy implant materials used in this study were well biocompatible to the human body. There were no blood, immune, histology reactions, or the corrosion and abrasion of Ti-alloy appeared. CONCLUSION: Pedicle screw fixation in short segment for the treatment of Hangman's fracture is satisfactory in fracture reduction, fixation and healing. There are little lose in function of cervical vertebrae and it promotes functional recovery of spinal cord.

BACKGROUND: Schwann cells play an important role in axonal growth and myelin sheath formation of the peripheral nerve. Whether Schwann cells play the same role in the spinal cord had attracted considerable attention. Microencapsulation technology as an effective immune isolation technique can effectively keep Schwann cell activity to play the repair effect of Schwann cell in the spinal cord.OBJECTIVE: To observe the changes of myelin sheath in the injured transection of rats after transplantation of the alginic acid microencapsulated Schwann cells.DESIGN, TIME AND SETTING: The randomized controlled animal experiment was performed at the Basic Medical School of Nanchang University from March 2005 to February 2008.MATERIALS: Sciatic nerve trunk was obtained from adult rabbits to harvest Schwann cells in vitro using repeatedly differential velocity adherent technique, and to prepare Schwann cell suspension and microencapsulated Schwann cell suspension.METHODS: A total of 146 adult Sprague Dawley rats were used to establish models of right hemi-transection damage at T_(10) level and randomly assigned to four groups: simple injury group (n=44), cell transplantation group (n=44), microencapsulated cell transplantation group (n=44) and normal control group (n=14). At 1, 3, 7,14 and 28 days following surgery, 8 rats were selected from each group at each time point (2 from the normal control group) for perfusion and fixation. Spinal cord tissue was collected to make paraffin section, and then subjected to hematoxylin-eosin staining and Loyez myelin staining. In addition, 2 rats were selected from each group at 2 and 8 weeks. The spinal cord tissue was fixed, embedded in Epon816, stained using uranyl acetate and aluminum citrate, and then observed using an electron microscope.MAIN OUTCOME MEASURES: Neuron number and survival were observed surrounding the damaged region. Structural changes in the myelin sheath from spinal cord white substance at the damage site were measured.RESULTS: At 1 and 3 days following spinal cord injury, spinal neurons were degenerated and necrotic at damaged site, with reduced number of myelin sheath, loose structure, but above-mentioned was rare in the cell transplantation and microencapsulated cell transplantation groups. At 7 days, the reduced number of myelin sheath, with damaged structure was seen. The microencapsulated cell transplantation group was light. At 14 days, number of neurons was increased, with increased cell body, especially in the microencapsulated cell transplantation group. At 28 days, neurons gradually recovered, myelin sheath was gradually complete, with increased number in the microencapsulated cell transplantation group. There were significant differences compared with the simple injury and cell transplantation groups (P < 0.01). At 8 weeks, abundant myelin sheath was repaired, with new myelin sheath in the microencapsulated cell transplantation group.CONCLUSION: Microcapsule has immune isolation effects. Microencapsulated rabbit Schwann cells can promote the repair of rat spinal cord neurons and axonal myelinization.

Objective The aim of this study was to explore the clinical value of dual-source CT(DSCT)in the diagnosis of coronary artery fistula(CAF)before and after surgery. Methods A retrospective analysis was performed in 15 cases of patients with CAF,11 cases of which was treated by surgery during extracorporeal circulation. Results CAF arose from right coronary artery in 8 cases and left coronary artery in 7 cases,with the latter including 3 cases of ramus nodi sinuatrialis fistula,2 cases of anterior descending branch fistula,and 2 cases of left circumflex fistula. CAF entered into right atrium(6 cases),right ventricle(5 cases),left ventricle(4 cases)and left atrium(1 case). There were dilatation of coronary artery in 8 cases,localized aneurysm in 4 cases,normal coronary artery in 3 cases,single fistula orifice in 11 cases,and multiple fistula orifice in 4 cases. 11 patients underwent surgery under cardiopulmonary bypass(CPB).The postoperative imaging revealed fistula has been sutured in 10 patients with no residual fistula,including fistula vascular ligation in 3 cases,the proximal imaging and distal occlusion in right coronary artery angioplasty in 1 case,and pseudo diverticulum in 2 cases. Conclusion DSCT examination has significant value in preoperative diagnosis and postoperative follow-up for CAF.