BACKGROUND: There were disadvantages of animal models in the study of the relationship of muscle and skeleton. Recent study has been demonstrated the effect of Botulinum toxin type A to atrophy local muscle without influencing the surrounding muscle.OBJECTIVE: To construct a reasonable animal model of local muscle atrophy by local injection of Botulinum toxin type A.METHODS: Totally 25 male Wistar rats of 4 months were subjected to ketamine (0.2 mL/kg) and Sumianxin (0.2 mL/kg) by intramuscular injection. A 0.5-cm incision was made on the middle of dorsal femur to expose quadriceps femoris. Right quaddceps femods was injected with 2 Units (0.2 mL) of Botulinum toxin type A, and left quaddcaps femoris of the same rat with the same amount of saline as controls. At 1, 2, 4, 8, 8 weeks after injection, 5 rats were used to take gross observation and histological examination.RESULTS AND CONCLUSION: Gross observation of the muscle tissue showed that, compared with self-controlled group, the volume and weight of the quadriceps femods were decreased significantly (P < 0.01). The histological examination of muscle tissue showed the atrophy of the quadricaps femods from expedmental group was more obvious, the muscle fiber become thin,and the nuclei of the muscle fiber assemble together, with small distance betWeen muscle fibers. Weight of the quadricaps femods treated with Botulinum toxin type A was decreased at 1 and 2 weeks. The increase in weight of muscle was slow among muscle at 4, 6 and 8 weeks. The muscle weight showed an increased tendency in the saline side at vadous time points. Injecting Botulinum toxin type A into local muscle is a reasonable way to set up an experimental model of the atrophy of a destination muscle with strong practice, good repeatability, high stability, and may be used to examine the relationship of muscle and skeleton.

Objective To investigate the 9 . 4 T of DTT in the diagnosis of SD rat C6 cerebral gliomas model about the change of CST on tumor progression and pathology confirmed. Methods ①10 μl C6 cell suspension of 106 cells number were implanted into the right caudate nucleus of brain hemisphere of 20 adult male SD rat with ster-eotactic technique. ②Application of 9. 4 T of DTT and DTI, meanwhile the routine T1-weighted imaging(T1WI), T2-weighted imaging(T2WI), contrast-enhanced T1WI,FLAIR imaging and diffusion tensor of the brain were ac-quired. Anatomic relationship between cerebral glioma and surrounding white matter fiber tracts was analyzed and measured the values of FA and MD in different areas on fractional anisotropic ( FA) map, color-coded directional map, three-dimensional (3D) white matter fiber tracts map, then stained with routine HE. Results All of SD rat C6 cerebral gliomas models 3 D white matter fiber tracts map by means of FA maps of DTI were successfully comple-ted. Apparently significant differences of FA values were found in solid tumor, surrounding edema, compared with normal white matter regions ( P<0.05 );but there was no significant difference among solid tumor and surrounding edema region (P>0.05);there were significant differences of MD values between solid tumor, surrounding edema and normal white matter region ( P<0.05 ) . Conclusion The 9 . 4 T of DTT offers the optimal visualization of An-atomic relationship between cerebral glioma and surrounding white matter fiber tracts in the different periods of the tumor moder.

Objective To discuss the imaging manifestations of chordoma.Methods The imaging manifestations of chordoma in 42 cases proved by surgery and pathology were retrospectively analysed.Results The lesions located at the region of skull base in 23 cases(54.8%),at the sacrococcygeal region in 18 cases(42.9%) and one case(2.3%) outside the axial skeleton as an extra-axial chordoma or parachordoma.Bone destruction in the areas near skull base and sacrococcygeal region could be found on radiography.On CT,chordoma typically appeared as a expansile soft-tissue mass that arises from the clivus and sacrococcygeal region with associated extensive lytic bone destruction.MR imaging was considerably superior to CT in the delineation of lesion extent.Conclusion Chordoma has typically distribution and characteristic imaging manifestations,especially MRI.

Objective To find out about the current situation of mental health institutions in Guangdong. Methods An investigation via self-made questionnaires was made on the current situation of 62 mental health institutions in the province and a comparison was made of 22 mental hospitals between now and four years ago. Results Throughout the province, there were 9901 psychiatric beds, 1236 psychiatric doctors and 1909 psychiatric nurses, averaging respectively 1.16 beds, 0.15 doctors and 0.22 nurses per 10 thousand people. The bed utilization ratio was mostly 82.00% and only 12.00% of the mental health institutions adopted open management. A comparison of the 22 mental hospitals between now and 4 years ago showed that the numbers of hospital beds, doctors, doctors with associate senior professional tides and above, ECG machines, computers, hospital total income per year, and monthly charges for hospitalization had increased while the area of workplaces, the bed utilization ratio, the average number of daily outpatient visits, the average number of daily outpatient psychological consultations, and equipment other than ECG machines and computers remained unchanged and government funding had decreased. Couclusion The major problems with the mental health institutions in the province are shortage and lack of balance in the allocation of mental health resources, backwardness in the modes of management, difficulty in internal development, and reduction of government input.

OBJECTIVE To avoid the hospital(infection) in the dental surgery operating room.METHODS The(international) ISO quality standard was applied to establish the quality control the hospital infection.RESULTS The quality control for the hospital infection was guaranteed in the dental surgery operating room,and the items (observed) were in the allowance of the legislations for the hospital infection.Zero case of hospital infection(happened.) CONCLUSIONS It is useful for the hospital infection administration in the dental surgery operating room to apply the international ISO quality standard.

Objective To evaluate the selective angiography and interventional management in nonvariceal gastrointestinal hemorrhage.Methods 94 cases with nonvariceal gastrointestinal hemorrhage were accepted for selective angiography.According the location and cause of hemorrhage finding by angiography,these patients were checked by arterial embolization and/or perfusion of vasoconstrictor substance.Results DSA revealed positive result in 58 cases(61.7%) of 94 cases.Meanwhile,13 cases accepted 99m Tc-labeled erythrocytes nuclear scan,11 cases(84.6%) showed hemorrage.Arterial embolization was carried out in 34 cases,the hemostasis and relapse rate was 91.2% and 8.8% respectively.Besides arterial embolization,8 cases were selected vasopressin infusion,the hemostasis and relapse rate of vasopressin infusion was 75.0% and 25.0% respectively.No severe complication such as intestinal necrosis occurred among the 42 cases with interventional therapy.Conclusion Selective angiography is a valuable method for the diagnosis of the nonvariceal gastrointestinal hemorrhage of unknown reasons.The()~(99m)Tc-labeled erythrocytes nuclear scan is more sensitive than selective angiography in detecting bleeding,however,as to find bleeding location accurately,it was inferior to selective angiography.

Objective To analyze the proportion of HPV infection among the patients in the gynecology and obstetrics department and urology surgery department of our hospital,distribution of HPV high risk and low risk subtypes and distribution characteristics of high risk HPV predominant subtypes in various age groups,and to understand the HPV infection situation in this area to provide reference for the prevention of cervical cancer and vaccine development aiming at this area.Methods The cervical exfoliated cells in 889 female patients in our hospital during 2014-2015 were detected by PCR reverse spot hybrid technology,26 HPV subtypes were detected,including 17 high-risk subtypes and 9 low-risk subtypes.Results Among 889 cells samples,168 cases of HPV positive were detected with the positive rate of 18.9%,which was dominated by single infection,148 cases of high-risk subtypes were detected,accounting for 84.5% of the total number of positive cases.24 kinds of HPV subtypes were detected.High risk subtype HPV45 and low risk subtype HPV57 were not detected.The top HPV high-risk subtypes in the detection rates were HPV52,HPV16 and HPV58,in young and middle-age women,HPV16 and HPV52 were predominant infection subtype,accounting for 84.5% of total positive cases.Women >60 years old were mainly infected by HPV58.Conclusion Different subtypes of vaccine can be developed and adopted according to these study results and by aiming at different ages for preventing and treating cervical cancer and increasing the female health level.

Objective To investigate the clinical manifestation and management of acute cholangitis severe type (ACST) with different typos of obstruction. Methods From January 1997 to December 2006, 164 consecutive patients with ACST had been admitted to Chengdu First People's Hospital. All patients were divided into extrahepatic type group (n=122), intrahepatic type group (n=18) and mixed type group (n=24) accord-ing to the types of obstruction. Clinical manifestation and therapeutic outcome of the 3 groups were analyzed using chi-square test, continuity correction test or Fisher exact test. Results There was no significant difference in clinical manifestation between patients with extrahepatic type and those with mixed type (P>0.05). The incidence of jaundice and abdominal pain in patients with intrahepatic type is significantly lower than those with extrahepatic type (P<0.05). The incidences of distention in consciousness and response to initial medical treat-ment were higher than those with extrahepatic type (P<0.05). The total mortality rate was 9.8% (16/164). Of all patients, 123 received open surgery. There was no significant difference in morbidity and mortality in patients with intrahepatic type and mixed type (χ~2=0.172,0.789; 1.769, 1.948, P>0.05). In emergency operation, the incidence of biliary high pressure and postoperative vital sign improvement rates were significant higher in patients with extrahepatic type than the other 2 types (P<0.05). The morbidity and mortality of patients who received emergency operation were higher than non-emergency operation (P<0.05). Conclusions The clinical manifestation of ACST is different between intrahepatic obstructive type and the other 2 types. There is no signi-ficant difference in morbidity and mortality among the 3 types of obstruction. The morbidity and mortality are high in patients who received emergency operation. Proper management of surgical timing is helpful in decreasing the morbidity and motality of ACST.

Enterovirus 71 (EV71) is one of the primary causative agents of hand, foot and mouth disease in children and closely associated with severe neurological complications and even deaths.EV71 outbreaks have occurred throughout the Asia-Pacific region since 1990s, posing global public health threat;however, no specific therapeutic strategy exists for severe EV71 infection.Several inactivated vaccine products have entered or finished the clinical trial stage, and some novel vaccine candidates, including live attenuated, subunit, and virus-like particle, show great potential for further develop-ment.This review summarizes the present situation and progress in the development of EV71 vaccines.

Objective To investigate the application effect of nasal gastrointestinal double lumen catheter tube placement with air insufflation in mechanically ventilated patients with intra-abdominal hypertension.Methods A total of 20 patients with intra-abdominal hypertension were randomly divided into control group and observation group (n=10 in each group).Patients in control group received indwelling nasogastric tube for decompression and indwelling nasal intestine tube by air insufflation for enteral nutrition support .Patients in observation group received the dual lumen gastrointestinal tube for decompression and enteral nutrition support.The time required for catheterization,changes in intra-abdominal pressure before and after air insufflation,catheter success rate at one attempt,pain scores of patients to catheter operation, duration of decompression,enteral nutrition start time and the duration of mechanical ventilation were compared between two groups.Results The time required for catheterization,catheter air insufflation volume in observation group were significantly lower than those in control group (P <0.01);pain scores of patients to catheter operation were significantly lower in observation group than those in control group (P <0.01);There was no significantly difference in once catheter success rate,changes in intra-abdominal pressure before and after catheterization,abdominal high pressure relief time ,enteral feeding start time, and duration of mechanical ventilation between the two groups (P >0.05 ).Conclusions The technique of air insufflation has higher success rate for Indwelling nasal intestine tube in mechanically ventilated patients with intra-abdominal hypertension,and this method is safe and reliable,dual lumen gastrointestinal tube can improve patients'comfort,shorter catheterization time and reduce catheter air insufflation volume.