1.Correlation of surgical manner with local relapse and prognosis in lower rectal cancer of Duck stage A
Yong DAI ; Qing NI ; Qiang LI ; Yousheng LU
Chinese Journal of Primary Medicine and Pharmacy 2006;0(12):-
0.05).Conclusion The local relapse rate and the survival rate within 3 years has no significant difference between patients with lower rectal cancer of Duck stage A after sphincter-preserving surgery and Miles surgery.
2.Numerical study on the stability of micro-implant with different pitchs for immediate loading
Yong-Qiang XU ; Dai-Quan ZHANG ; Wen-Tao JIANG ; Yu-Bo FAN
Journal of Medical Biomechanics 2009;24(6):439-443
Objective To study the stability of micro-implant orthodontic anchorage(MA)with different pitch in the case of immediate loading.Method Employing 3D finite element analysis method,the stress and dis-placement distribution on the bone interface of MIA with different pitch(0.3 mm、0.5 mm、0.7 mm and 1.0 mm,respectively),which was 1.47 N loaded vertically in the major axis direction,were analyzed.Result The pitch affected the stress distribution significantly,because the maximum stress increased with the pitch decreasing and the impact of pitch on stress distribution on neck and central locations of MIA were different;to decrease the pitch could reduce the max displacement of the jaw,but the impact of pitch on displacement distribution of MIA was not significant.Condusions In the case of immediate loading.MIA with pitch 0.5 mm-0.7 mm is suggested to be selected as orthodontic anchorage in the clinic.
3.Numerical study on the stability of micro-implant with different pitchs for immediate loading
Yong-Qiang XU ; Dai-Quan ZHANG ; Wen-Tao JIANG ; Yu-Bo FAN
Journal of Medical Biomechanics 2009;24(6):439-443
Objective To study the stability of micro-implant orthodontic anchorage(MA)with different pitch in the case of immediate loading.Method Employing 3D finite element analysis method,the stress and dis-placement distribution on the bone interface of MIA with different pitch(0.3 mm、0.5 mm、0.7 mm and 1.0 mm,respectively),which was 1.47 N loaded vertically in the major axis direction,were analyzed.Result The pitch affected the stress distribution significantly,because the maximum stress increased with the pitch decreasing and the impact of pitch on stress distribution on neck and central locations of MIA were different;to decrease the pitch could reduce the max displacement of the jaw,but the impact of pitch on displacement distribution of MIA was not significant.Condusions In the case of immediate loading.MIA with pitch 0.5 mm-0.7 mm is suggested to be selected as orthodontic anchorage in the clinic.
4.Hepatic VX2 tumor after portal vein occlusion in rabbits:evaluation with DSA
Yue-Yong QI ; Li-Guang ZOU ; Shu-Hua DAI ; Xiao-Bing HUANG ; Ke-Qiang HAN ; Qi-Chuan ZHANG ; Lin CHEN ;
Journal of Interventional Radiology 2006;0(11):-
Objective To study the value of DSA for hepatic vascular anatomy,and to evaluate the efficacy of portal vein occlusion in rabbits with hepatic VX2 tumor.Methods Twenty New Zealand white rabbits were randomly divided into two groups with 10 in each group,including test group A and positive control group B of ham operation.For the test group A,portal branch ligation(PBL)was performed for the left external branch after 3 weeks of the tumor implantation to the left external lobe.Two weeks later,the DSA of hepatic artery and portal vein were performed in all of the rabbits.Results The total displaying effectiveness of the branches of hepatic artery by DSA was better than that by vascular perfusion.There was hypovascular blood supply to hepatic artery implantation of the tumor in the test group A,comparing with that of the group B.Conclusion DSA can clearly display spacial details of the hepatic vascular anatomy in rabbits,and play an important role in post-procedual evaluation of the portal vein occlusion in rabbits.
5.Effect of temperature on physiologic indexes, bulb yielding and total alkaloids contents of Fritillaria cirrhosa.
Kai-qiang LI ; Wei WU ; You-liang ZHENG ; Yong DAI ; Lan MOU ; Kai LIAO
China Journal of Chinese Materia Medica 2008;33(16):1948-1951
OBJECTIVETo study the physiologic indexes, yield and the contents of alkaloids of Fritillaria cirrhosa D. Don under different temperature.
METHODThe growth temperatures (15, 20, 25, 30 degrees C) of F. cirrhosa were controlled by using artificial climate, the growth was observed, the contents of chlorophyll a and b, soluble sugar, MAD, proline of the leaves of F. cirrhosa were tested, and the yield and the alkaloids content of the bulbs were analyzed.
RESULTThe growth period of F. cirrhosa under 15, 20 degrees C were appropriately extended. The difference of the content of leaves chlorophyll b under four temperatures and the contents of total chlorophyll and chlorophyll a under 15, 20, 30 degrees C were not significant. The contents of soluble sugar, MAD and proline of leaves and the growth ratio, dry weight and content of alkaloids of bulb increased with the temperature decrease.
CONCLUSIONHigher temperature is not suitable for the growth of F. cirrhosa. Under the relatively lower temperature, the growth period of F. cirrhosa extended, the bulb can grow properly, and the content of alkaloid increased. F. cirrhosa can improve its cold tolerance by increasing the content of proline and soluble sugar, and it also can maintain the normal content of chlorophyll under the lower temperature.
Alkaloids ; metabolism ; Fritillaria ; growth & development ; metabolism ; Gene Expression Regulation, Plant ; Temperature
6.Experimental study on pharmacodynamical of Oxalis griffithii, a national medicine in Guizhou.
De-xun SONG ; Jian-zhong DAI ; Xue-yu ZHANG ; Kai-yong ZHAO ; Ming-qiang XU
China Journal of Chinese Materia Medica 2005;30(3):215-218
OBJECTIVETo study the on effects of anti-bacteria, anti-inflammatory and pyretolysis of Oxalis griffithii, it is possible safety.
METHODThe mice model was established by xylene (auricle smear method) and carrageenin (injection under the aponeuroses) respectively, rat febrile model was builded by 2,4-dintrophenol injection, and observe the effects of anti-bacteria in vitro that contracted by Staph aureus, Escherichia, Shigella, Pseudomonas, Aeruginosa. The mice model of experiment study on urgent poison effects (injection under the aponeuroses).
RESULTIt was found that the mouse ear edema induced by xylene, the increased vascular permeability caused by xylene were all significantly suppressed by Oxalis griffithii. At the same time, it could depressed the rat fervescence by 2,4-dinitrophenol. In addition, it has effect on fighting against Escherichia coli in cavum abdominis of mice. Oxalis griffithii hasn't canker affect.
CONCLUSIONThese results suggested that Oxalis griffithii had the effects of antinflammatory, pyretolysis, and safety.
Animals ; Anti-Bacterial Agents ; pharmacology ; Anti-Inflammatory Agents, Non-Steroidal ; pharmacology ; Capillary Permeability ; drug effects ; Carrageenan ; Drugs, Chinese Herbal ; isolation & purification ; pharmacology ; Edema ; chemically induced ; drug therapy ; Escherichia coli Infections ; drug therapy ; Female ; Fever ; drug therapy ; Magnoliopsida ; chemistry ; Male ; Mice ; Mice, Inbred ICR ; Phytotherapy ; Plants, Medicinal ; chemistry ; Rats ; Rats, Sprague-Dawley
7.Clinical study on concomitant surgery for stress urinary incontinence and pelvic organ prolapse.
Zheng-yong YUAN ; Yi DAI ; Yan CHEN ; Qiang WEI ; Hong SHEN
Chinese Journal of Surgery 2008;46(20):1533-1535
OBJECTIVETo discuss indications and therapeutic effects of concomitant surgery for stress urinary incontinence (SUI) and pelvic organ prolapse (POP) through a retrospective clinical review.
METHODA retrospective review of the data of 16 women undergoing concomitant surgery for SUI and POP was available for analysis. In these cases, 12 patients presented with SUI symptoms associated with moderate or severe anterior vaginal wall prolapse; 4 patients had moderate or severe uterine prolapse associated with dysuria. All cases were confirmed to have type II stress urinary incontinence by preoperative physical examination, urodynamic study and cystography. The surgical procedures for pelvic floor repair included the placement of Gynemesh mesh implant, anterior or total Prolift mesh implant. The tension-free vaginal tape (TVT) or transvaginal tension free vaginal tape-obturator (TVT-O) was used for the anti-incontinence procedure. During the concurrent surgical procedures, pelvic floor repair was performed first.
RESULTSFollowed up from 6 to 30 months, all cases got satisfactory results. After the procedure, the patients achieved complete continence without occurrence of dysuria or recurrence of POP.
CONCLUSIONSStress incontinence and pelvic organ prolapse share common pathophysiologic etiologies and often coexist with one another. In SUI patients with symptomatic or moderate to severe POP, concurrent POP surgery should be performed actively at the time of incontinence surgery to prevent POP exacerbation and the occurrence of dysuria; while in patients with sole POP, occult SUI should be considered, and concomitant prophylactic incontinence measures should be taken at the time of POP repair to prevent the postoperative unmasking of SUI.
Aged ; Female ; Follow-Up Studies ; Humans ; Middle Aged ; Pelvic Floor ; surgery ; Retrospective Studies ; Suburethral Slings ; Urinary Incontinence, Stress ; complications ; surgery ; Visceral Prolapse ; complications ; surgery
8.Impact of early enteral nutrition on the intestinal motility of patients after esophagectomy.
Hua-qing FENG ; Liang DAI ; Shao-hua MA ; Xiao-zheng KANG ; Yong-qiang YANG ; Ke-neng CHEN
Chinese Journal of Gastrointestinal Surgery 2012;15(9):957-959
OBJECTIVETo assess the impact of early enteral nutrition (EN) on the intestinal motility of patients after esophagectomy.
METHODSThirty-five consecutive patients undergoing esophagectomy for esophageal cancer by a single surgical team from the Peking University Cancer Hospital from June 2011 to July 2011 were enrolled. Patients were randomly divided into EN group (n=20) and parenteral nutrition group (control group, n=15) within 24 h after esophagectomy procedure. Bowel sound recovery time was monitored by auscultation, and the gastrointestinal tract symptoms were recorded.
RESULTSBowel sound recovery time was (45.1±20.3) h in the EN group, and was (56.7±17.0) h in the control group (P=0.082). Gastrointestinal symptoms such as nausea, abdominal distension, diarrhea occurred in 4 patients in EN group and 3 patients in control group and were alleviated by lowering infusion speed and more off-bed ambulation, and no significant difference was seen between the two groups (P=1.000).
CONCLUSIONSEarly enteral nutrition in the patients after esophagectomy is safe and feasible. Early enteral nutrition does not delayed bowel function recovery or increase gastrointestinal symptoms.
Aged ; Enteral Nutrition ; Esophageal Neoplasms ; physiopathology ; therapy ; Female ; Gastrointestinal Motility ; physiology ; Humans ; Male ; Middle Aged ; Postoperative Care ; Prospective Studies
10.Effects of Naoxintong on atherosclerosis and inducible nitric oxide synthase expression in atherosclerotic rabbit.
Xiao-Nan ZHONG ; Hong-Hao WANG ; Zheng-Qi LU ; Yong-Qiang DAI ; Jian-Hua HUANG ; Wei QIU ; Ya-Qing SHU ; Wen XU ; Chen CHENG ; Xue-Qiang HU
Chinese Medical Journal 2013;126(6):1166-1170
BACKGROUNDHigh levels of nitric oxide (NO) produced by inducible NO synthase (iNOS) have been associated with atherosclerosis processes. Naoxintong is a traditional Chinese medicine for treatment of cerebrovascular and cardiovascular disease. The aim of the present study was to detect and quantify changes of iNOS mRNA and NO levels in the vessel wall after the administration of Naoxintong in an atherosclerotic rabbit model.
METHODSForty New Zealand white rabbits were randomly divided into five groups (n = 8). Rabbits were fed a standard diet (group A), an atherogenic diet consisting of 79% standard feed + 1% cholesterol + 5% lard + 15% egg yolk powder (group B), an atherogenic diet with Naoxintong 0.25 mg×kg(-1)×d(-1) (group C), an atherogenic diet with Naoxintong 0.5 mg×kg(-1)×d(-1) (group D), or atherogenic diet with Naoxintong 1.0 mg×kg(-1)×d(-1) (group E) for 12 weeks.
RESULTSSupplemented administration of Naoxintong led to a down-regulation of cholesterol (CHOL) (P < 0.001) and low-density lipoprotein (LDL) (P < 0.001). The trend became more notable as the dose of Naoxintong increased; group C vs. group B (CHOL, P = 0.568; LDL-cholesterol (LDL-C), P = 0.119), group D vs. group B (CHOL, P = 0.264; LDL-C, P = 0.027), group E vs. group B (CHOL, P = 0.028; LDL-C, P = 0.002). Atherosclerotic lesions in aorta were reduced in Naoxintong groups (groups C, D, E) compared to group B. Group B had higher iNOS mRNA (P = 0.001) and NO level (P < 0.001) than group A. Compared with the atherogenic diet fed-rabbits, Naoxintong supplements decreased the expression of iNOS mRNA (P < 0.001) and the NO level (P < 0.001) in the vessel wall. Groups given a higher Naoxintong dose exhibited greater benefits. iNOS mRNA and NO levels seemed to be reduced in group C, although the difference did not quite reach statistical significance (iNOS mRNA, P = 0.130; NO, P = 0.038). iNOS mRNA and NO levels significantly decreased in group D (iNOS mRNA, P = 0.019; NO, P = 0.018) and group E (iNOS mRNA, P = 0.004; NO, P < 0.001).
CONCLUSIONNaoxintong has beneficial effects on atherosclerosis treatment by reducing expression of iNOS mRNA and the NO level in the vessel wall.
Animals ; Atherosclerosis ; drug therapy ; enzymology ; metabolism ; Drugs, Chinese Herbal ; therapeutic use ; Nitric Oxide ; metabolism ; Nitric Oxide Synthase Type II ; genetics ; metabolism ; Rabbits