[Objective]To investigate the mechanism and pathologic changes of anterior cruciate ligament impingement syndrome as well as its arthroscopic diagnosis and treatment.[Method]From January 2005 to June 2007,28 patients with a history of anterior cruciate ligament impingement were diagnozed and treated arthroscopically.The patients' clinical findings were mainly anterior patellar pain and limited knee joint.The reasons of anterior cruciate ligament impingement syndrome were indentified by routine arthroscopic examination:straitness of intercondylar notch or osteophytes formation in 19 cases,old avulsion fracture in the tibial intercondylar in 4 cases,anterior cruciate ligament cyst in 3 cases,incorrect tibial tunnel placement on reconstructed anterior cruciated ligament in 2 cases.Different surgical procedures were carried out according to the results of the examination:joint debridement and intercondyle's plasty;intercondyle's plasty and osteophytes resection;joint debridement and ACL cysts resection;ACL tibial eminence insertion reconstruction were performed.[Result]Twenty-eight cases were followed for an average of 15 monthes(6-34 monthes).The rate of good to excellent was 82.1%,recurrence was observed in 1 case.[Conclusion]The gradual constriction of the knee is mainly caused by the anterior cruciate ligament impingement syndrome.Arthroscopy is very valuable in diagnosis and treatment of anterior cruciate ligment impingement syndrome.It can also acquire whole assessment of the joint injuries and makes out reasonable treatment program to normal knee joint function.

Objective To study the results of clinical application of videokymography. Methods 50 patients with voice pathology and 5 normal voice persons were studied with videokymography. Results With videokymography, left - right asymme- tries, close or open quotient differences, abnormal periocity and mucosal waves were visualized in 50 patients. The vibration of vo- cal folds was slight asymmetry in 1 normal voice person and normal in other 4 normal voice persons. Conclusion Videokymography provides a simple way to study irregular vibrations of the vocal folds. It is helpful for a more accurate diagnosis of the vocal folds. Information obtained allows a first time quantification of vibrations registered.

Service recovery as a theory of services marketing has gradually been applied to hospital services. By expounding the concept, significance and principle of service recovery, the paper puts forward some strategies that ought to be adopted in service recovery: ①preventive strategy; ②timely strategy; ③ the strategy of cultivating the employees capability of on the spot service recovery; ④ the strategy of laying stress on follow up and anticipation and prevention of errors.

Objective To evaluate the results of the Groningen valve voice prosthesis in China.Methods The Groningen valve was used to date in 10 patients with a mean age at insertion of 60.2 years from January 2003 to January 2004. Seven patients underwent primary valve insertion at the time of surgery and in three patients the prosthesis was inserted at a later date. The speech quality of this group was assessed.Results The median score was 4.6(range 3.3～6.9)which compared favourably with a similar analysis of other valve.Conclusion The Groningen valve provides a highly acceptable means of obtaining vocalization after total laryngectomy in patients.

Objective To investigate the causes of pancreatic injury after autologous liver transplantation in rats. Methods Forty-two SD rats were randomly divided into post autologons liver transplantation 1-hour group, 6-hour group, 12-hour group, 24-hour group, 48-hour group, 72-hour group and sham group (6 rats per group). The plasma concentrations of amylase and lipase were measured to assess pancreatic exocrine function. The histomorphological changes of pancreatic tissue were studied under optical and electron microscopes. All data were analyzed via one-way ANOVA. Results The plasma concentrations of amylase and lipnse in post autologous liver transplantation 1-hour group were significantly higher than those in sham group, and they gradually increased as time passed by. The plasma concentrations of amylase and lipase reached peak at hour 48, after which they decreased gradually. There was a significant difference in the plasma concentration of amylase and lipase among the 7 groups (F = 538.622,489.417, P < 0.05). Acute edematous pancreatitis was observed 1 hour after autolognus liver transplantation, and acute hemorrhagic necrotic pancreatitis was observed 6 hours after transplantation. The degree of injury reached a peak 48 hours after transplantation. The number of mitochondria was increased, and endoplasmic reticulum and Golgi apparatus were swollen 1 hour after transplantation, and the area, perimeter, specific surface area and mean gray value of mitochondria were (312±40) mm~2, (80.3±3.8)mm, 0.332±0.039 and 113±11, respectively. As time passed by, the injury of the pancreatic cells was aggravated and autophagosomes were observed. The injury was most severe 48 hours after transplantation, and the area, perimeter, specific surface area and mean gray value of mitochondria were (466±7) mm~2, (108.8±3.7) mm, 0.298±0.009 and 195±12, respectively. There were significant differences in the specific surface area and mean gray value among all the groups (F = 9.322, 76.560, P < 0.05). Conclusion The pancreatic injury after autologous liver transplantation is related to the energy metabolism of the pancreatic cells induced by hypoxia.

Hyperuricemia is a risk factor for various diseases, but knowledge on acute hyperuricemia is still not sufficient. The present study was aimed to investigate the effect of acute hyperuricemia on red blood cells from hemorheological point of view, and to provide the reference for clinical treatment. The rats were gavaged with 500 mg/kg hypoxanthine and intraperitoneally injected with 100 mg/kg oxonate to induce the model of acute hyperuricemia. The same volume of blood samples were drawn within time period of 0, 1, 2, 3 and 6 h, respectively, from the inner canthus of rats to measure the serum uric acid, hemorheological parameters and the malondialdehyde level. It was found that in each period of 1, 2 and 3 h, the rats had significantly higher levels of uric acid. The integrated deformation index and relax index were increased. The hemolysis rate was significantly reduced. The plasma malondialdehyde level was obviously decreased at the end of 2 h. The results suggested that short-term elevated uric acid could improve the hemorheological parameters and the lipid oxidative level in red blood cells.
Animals ; Erythrocytes ; Hemorheology ; Hyperuricemia ; blood ; Malondialdehyde ; blood ; Rats ; Rats, Sprague-Dawley ; Uric Acid ; blood

Aim To investigate the effects of maternal chronic aluminum exposure on memorial behaviour and hippocampal intracellular Ca2+ concentration ([Ca2+]i)on their offspring after the induction of LTP(long-term potentiation). Methods Adult Wistar rats (150~200 g) were exposed to aluminum by drinking distilled water, the concentration of AlCl3 is 0.015 mol?L-1(2 g?L-1) and 0.03 mol?L-1(4 g?L-1) aluminum chloride (AlCl3) solution, respectively, for 30 days prior to mating and during the whole gestation and suckling period. Their offspring were distributed into three experimental groups: control group; two exposed groups (represented by 0.2%-Al and 0.4%-Al ) administrated aluminum exposure ended at postnatal day 21. The brain tissue and blood aluminum levels were measured by Atomic absorption spectrometry (AAS). Memorial ability of the offspring was tested by Step down test.[Ca2+]i was measured by the technique of Fura-2/AM calcium ions fluorescence indicator. Results The mean aluminum content in blood and brain tissue was significantly higher than the control group(P0.05), but was significantly decreased in 0.4%-Al exposed group(P

OBJECTIVETo observe the expression change of mitophagy-related proteins in skeletal muscle in rats with spleen deficiency syndrome and to explain the partial action mechanism of acupuncture at Zusanli (ST 36) for spleen deficiency syndrome.

METHODSForty male SD rats, after normal feeding, were randomly divided into a normal group, a spleen deficiency group, a Zusanli group and a non-acupoint group, ten rats in each group. Except the normal group, the three factors modeling method was used for 14 days to establish the model of spleen deficiency syndrome on the other 3 groups. The rats in the Zusanli group were treated with EA at bilateral "Zusanli" (ST 36), while the rats in the non-acupoint group were treated with EA at bilateral non acupoint (dense-sparse wave, frequency of 2 Hz/100 Hz, 20 min per treatment, once a day for 10 days). The rats in the normal group and spleen deficiency group were treated with immobilization for 20 min per day, and no EA was given. The HPLC method was applied to measure the content of adenosine triphosphate (ATP) and adenosine monophosphate (AMP) in skeletal muscle. The Western blotting method was applied to measure the expression of adenosine monophosphate activated protein kinase (AMPK), p-AMPK, ULK1, p-ULK1，LC3-Ⅰand LC3-Ⅱ in skeletal muscle.

RESULTSThe ATP content in the spleen deficiency group was significantly lower than that in the normal group (<0.01); the ATP content in the Zusanli group was significantly higher than that in the spleen deficiency group (<0.05) but lower than that in the normal group (<0.05), there was no significant difference between the non-acupoint group and the spleen deficiency group (>0.05). Compared with the normal group, the AMP/ATP in the spleen deficiency group and the Zusanli group were significantly up-regulated (<0.01, <0.05). The differences of p-AMPK/AMPK between the spleen deficiency group and the normal group was not significant (>0.05). Compared with the normal group and spleen deficiency group, the p-AMPK/AMPK in the Zusanli group was significantly up-regulated (both <0.05). The p-ULK1/ULK1 and LC3-Ⅱ/LC3-Ⅰin the Zusanli group was higher than those in the normal group and spleen deficiency group (all <0.01).

CONCLUSIONEA at "Zusanli" (ST 36) might activate AMPK and produce stable ULK1/AMPK compound and increase the mitochondrial autophagy, which could regulate spleen-stomach and treat spleen deficiency.