PURPOSE To study the ultrasonic differential diagnosis of renal tumors,reducing the misdiagnosis rate.METHODS 81 cases of renal tumors which had been examined before operation by ultrasonography and verified by surgery and pathology were evaluated retrospectively.RESULTS Forty two renal cell carcinoma,sixteen transitional ell carcinoma,and twenty two other renal masses of various histologic types exhibited a broad spectrum of ultrasonographic findings.Nephromas were found to be 98.8% (80/81) to tally,in which malignant and benign tumors were 92.6%(75/81) and 7.4%(6/81).The diagnostic accuracy was 87.7%(71/81) in ultrasonography.The sensitivity of the ultrasonography was 88.8%.CONCLUSIONS To master the ulltrasonographic expressions and main points of differentiation in appraisal of the tuberculous pyonephrosis,multilocular cyst of kidney and cystic renal carcinoma is the key of reduction misdiagnosis,to inquire about the history of illness in detail and analysis imaging data overall is also an important factor to reduce misdiagnosis.

Objective To study the expression and clinical significance of Mybl2 in Cervical tissues.Methods 74 cases of cervical tissues were obtained from the department of obstetrics and gynecology.The expression level of Mybl2 was detected by Elisa method,and the relationship with clinical pathology was analyzed.Results Elisa results showed that the expression of Mybl2 was significant among inflammation,CINⅠ,CINⅡ,CINⅢ and ICC groups (F=27.39,P＜0.05).The expression level of Mybl2 was higher in the older group that the younger one which were in the same clinical pathology degree,but it was not was significant(P＞0.05).Conclusion The expression levels of Mybl2 were related with the pathological changes of cervix.Disturb expression level of Mybl2 maybe induce the development of cervical cancer.

Objective To study the influence of center of gravity excursion in standing on function outcome of stroke patients.Methods46 stroke patients were assessed with static posturography in standing,Fugl-Meyer Balance Scale,Barthel Index and the time in hospital.The patients were divided into 2 groups according to posturography results:center of gravity was inclined to the normal side (normal group),center of gravity was inclined to the hemiplegia side (hemiplegia group).ResultsThe ability of balance,walking and activity of daily living(ADL)of the normal group patients were better than that of the hemiplegia group patients,and the in-hospital time was shorter (P<0.001).ConclusionThe center of gravity excursion in standing is highly correlated with functional outcome of stroke patients.

A three-dimensional finite element model of premaxillary bone and anterior teeth was established with ANSYS 13.0. The anterior teeth were fixed with strong stainless labial archwire and lingual frame. In the horizontal loading experiments, a horizontal retraction force of 1.5 N was applied bilaterally to the segment through hooks at the same height between 7 and 21 mm from the incisal edge of central incisor; in vertical loading experiments, a vertical intrusion force of 1.5 N was applied at the midline of lingual frame with distance between 4 and 16 mm from the incisal edge of central incisor. After loading, solution was done and displacement and maximum principle stress were calculated. After horizontal loading, lingual displacement and stress in periodontal membrane (PDM) was most homogeneous when the traction force was 14 mm from the edge of central incisor; after vertical loading, intrusive displacement and stress in PDM were most homogeneous when the traction force was 12 mm from the incisal edge of central incisor. The results of this study suggested that the location of center of resistance (CRe) of six maxillary anterior teeth is about 14 mm gingivally and 12 mm lingually to incisal edge of central incisor. The location can provide evidence for theoretical and clinical study in orthodontics.
Dental Models ; Dental Stress Analysis ; Finite Element Analysis ; Humans ; Incisor ; Maxilla ; Periodontal Ligament ; Tongue

Objective To study the effects of treadmill training on the recovery of neurological function and the expression of IGF-1/IGF-1Rin the brain poat focal cerebral ischemia.Metheods Forty-two male,adult Sprague-Dawley rats were randomly divided into a sham group(n=6),a model group(n=18)and a treadmill exercises group(n=18).Focal cerebral ischemia was induced in the latter two groups by right middle cerebral artery occlusion(MCAO)using a modified Longa's metheod.The rats in the treadmill exercises group were given treadmill training 6 days a week for 4weeks beginning 24 h after the MCAO. Rats in the sham group and model groups were reared in standard cages and could move frddly. Before being sacrificed at the 7th 14th and 28th day after the MCAO,the rats' neurological function were tested giving modified neurological weverity scores (mNSS). The expression of IGF-1/IGF-1R was detected using the reverse transcriptsae polymersae chain reaction and immunohistochemical methods.Results Neurological runction in the exercises group at the 14th and 28th day was better than in the control group,and IGF-1 and IGF-1Rexpression were significcantly upregulated on the 7th,14th and 28th day after the MCAO.Conclusion Treadmill training can improve neurological function by upregulating the expression of IGF-1 and IGF-1R in the ischemic brain, at least in rats.

AIM: To explore the effects of adipose-derived stem cell (ADSC) transplantation on the expression of IL-10 amd TNF-α after cerebral ischaemia in Middle cerebral artery occlusion (MCAO) rats. METHODS: 72 male adult Sprague-Dawley rats were randomly divided into 4 groups: sham group, MCAO group, Vehicle group and ADSC group (n=18). Rat's cerebral ischemia model was established by MCAO with Longa' s method. ADSC were labeled by DAPI before transplantation. One day after MCAO, 30 μL of cell suspension containing 1×10~6 ADSCs were injected into the lateral ventricle of ADSC group and the same dose of PBS was given to the Vehicle group. At day 4, day 7 and day 14 after MCAO, the rats were decapitated to detect the expression of IL-10 and TNF-α in ischaemic rat' s brain by ELISA, immunohistochemistry and RT-PCR. RESULTS: Compared with sham group, the expression of IL-10 and TNF-α significantly up-regulated at 4 d, 7 d of MCAO group(P<0.05). There was no statistical difference of IL-10 and TNF-α expression between MCAO and vehicle group ant any time point(P>0.05). Compared with Vehicle group, the expression of IL-10 significantly up-regulated while TNF-α expression significantly decreased of ADSC-treated group at any timepoint post MCAO(P<0.05). CONCLUSION: The transplantation of ADSC could up-regulate the expression of IL-10 and down-regulate the expression of TNF-α in MCAO rat' s brain, which might contribute to its protective role upon cerebral ischaemia.

ObjectiveTo study the effect of partial body-weight support and treadmill training in subacute stroke patients.Methods40 stroke patients were randomly arranged into 3 groups: group A (n=14) accepted 8 weeks of routine physical therapy, group B (n=13) accepted additional 6 weeks partial body-weight support and treadmill training at the 3rd week, group C (n=13) accepted additional 3 weeks partial body-weight support and treadmill training at the 6th week. The patients were evaluated with Fugl-Meyer Assessment of Physical Performance(FMA), Barthel Idex(BI) and the Berg Balance Scale(BBS). ResultsThe functional outcome of the initial evaluation with FMA, BI and BBS were no-significantly different, 8 weeks later, that of group B were better than that of group A and group C (P<0.05～0.01), and that of group C were better than that of group A (P<0.05).ConclusionEarly treatment of partial body-weight support and treadmill training can help to improve the lower extremities function.

ObjectiveTo study the effect of THERA-vital Movement Therapy System on hemiplegic patients after stroke. Methods58 patients were divided into experimental group (n=30) or control group (n=28), the control group accepted routine stroke rehabilitation program, while the experimental group received muscle strength training with THERA-vital Movement Therapy System in addition. They were assessed with Fugl-Meyer Assessment (FMA) and Modified Barthel Index (MBI) before and after treatment. ResultsThere was no different between these two groups in both FMA and MBI before treatment （P＞0.05）. The scores of FMA and MBI significantly improved in both groups （P＜0.01）, and experimental group improved more than those in the control group （P＜0.01） after treatment. ConclusionMuscle strength training with THERA-vital Movement Therapy System is beneficial in improving motor function and activity of daily living in hemiplegic patient after stroke.

Objective:To investigate the etiology, clinical characteristics and outcome of severe pneumonia-associated hemophagocytic lymphohistiocytosis, and to analyze the risk factors for mortality.Methods:Clinical data of patients with severe pneumonia-associated hemophagocytic lymphohistiocytosis admitted to Shenzhen Children′s Hospital from February 2009 to February 2019 were retrospectively analyzed.The data included clinical characteristics, etiology, clinical manifestations, laboratory data, treatment and outcomes of the patients.The clinical characteristics and laboratory data of the survival group and the death group were compared by independent sample t-test. Results:(1) Clinical characteristics: the patients were aged from 3 months to 8 years and 7 months, including 15 males and 15 females.Severe pneumonia-associated hemophagocytic lymphohistiocytosis accounted for 2.74% (30/1 096 cases) of severe pneumonia in the same period.(2) Etiology: Mycoplasma pneumoniae infection was found in 8 cases (8/30 cases, 26.67%), virus infection in 7 cases (7/30 cases, 23.33%, including 5 cases with adenovirus infection, 1 case with EB virus infection, and 1 case with cytomegalovirus infection), Mycoplasma pneumoniae complicated with adenovirus infection in 4 cases (4/30 cases, 13.33%), bacterial infection in 3 cases (3/30 cases, 10%), and fungal infection in 2 cases, Mycobacterium tuberculosis infection in 1 case.The pathogens were not identified in 5 patients.(3) Clinical manifestations: fever and hepatomegaly were present in all patients.Besides, 86.67% (26/30)patients had fever duration more than 10 days, 83.33% (25/30 cases) patients had cough, 76.66% (23/30 cases) patients had splenomegaly, and 33.33% (10/30 cases) patients had nervous system symptoms.Laboratory data showed varying degrees of reduction of binary and ternary systems in 80.00%(24/30 cases) of the patients.Liver function impairment was found in half of the patients, and serum ferritin and lactate dehydrogenase levels were elevated in all patients.(4) The mortality rate was 30.00% (9/30 cases). The differences in age, hypertriglyceridemia and high serum ferritin levels between the survival and death groups were significant (all P<0.05). Conclusions:Severe pneumonia-associated hemophagocytic lymphohistiocytosis is a disease with a high mortality rate.Patients with Mycoplasma pneumoniae and adenovirus pneumonia are more likely to suffer from secondary hemophagocytic lymphohistiocytosis.Younger age, hypertriglyceridemia and high serum ferritin levels are indicative of poor prognosis.

Objective To study the balance function of normal persons and to explore the differences in gender and age groups.Methods Forty parameters of 445 normal persons(16-70 years old, 205 of male, 240 of female ) were detected by static posturography while they were in seat, double foot standing with opening and closing eyes, and single foot standing with opening eyes. The results of male and female, standing with opening eyes and closing eyes, left foot standing and right foot standing were compared.Results Everyone's center of gravity was distributed in A zone while they were in seat. At standing with opening eyes and closing eyes, the center of gravity in A zone were in 429 subjects( 96.4%) and 436 subjects( 98.0%). Most parameters showed significant difference between the women and the men, opening eyes and closing eyes, left foot standing and right foot standing, different age groups. The stability in closing eyes was better than that in opening eyes, right foot standing was better than left foot standing. Most values of 20—39 years old group were the best, 70—79 years old group were the worst.Conclusion Static posturography can evaluate human balance function objectively and quantitatively. The stability is related to age and gender. To judge the balance function, the subject's age and sex must be taken into account.