Objective To investigate the effects of atorvastatin on the experimental autoimmune encephalomyelitis(EAE)and the underlying mechanism of immunoregulation.Method The Wistar rats were used to establish EAE model.After oral administration of 2, 8 mg? kg~(1)?d~(1)of atorvastatin, the rats were examined for the development of neurological signs, changes of histopathology and the expression of IL-4 and MMP-9.Result Though high dose treatment with atorvastatin, the frequency of EAE attacks degreased from 76.67% to 33.33%(P=0.008);the extent of inflammation degreased from 3.2?1.1 to 1.3?0.4(P=0.01);and the number of MMP-9 positive cells degreased from 37?7 to 26?5(P= 0.001), the expression of IL-4 could be increased from(0.35?0.12)ng/ml to(0.68?0.23)ng/ml (P=0.05).Conclusion Atorvastatin can reduce the inflammation and produce the recover of the neurological harm because of the changes of MMP-9 and IL-4.

Objective To observe the significance of expressions of CD14+CD16+ on peripheral monocytes in children with Kawasaki di-sease (KD).Methods The expression of CD14+ and CD14+CD16+ monocytes in 16 children with KD (1-11 years old) were analyzed by flow cytomety both pre-treatment and post-treatment.And the percentages of CD14+CD16+ monocytes among CD14+ monocytes were calculated.Sixteen healthy children (10 months -10 years old) were served as normal control group.Statistical analysis was performed using t test.Results The levels of CD14+ monocytes,percentage of CD14+CD16+ monocytes among CD14+ monocytes and CD14+CD16+ monocytes in children with KD during acute phase (n=16) were (1.03?0.58)?109 L-1,(12.53?5.31)% and(1.20?0.79)?108 L-1.They were significantly higher than those in the normal controls[(0.57?0.21)?109 L-1,(3.86?1.84)% and (0.21?0.10)?108 L-1](Pa0.05).And the expressive levels remained high when the patient recurred.Conclusions The expressive levels of CD14+CD16+ monocytes increase in children with KD.And they change when the patient's clinical condition change.

ObjectiveTo observe the effects of bone marrow stromal cells (BMSCs) on vessel endothelial cells proliferation and microvessel formation in vitro.MethodsBMSCs and brain vessel endothelial cells were separated from adult and divided into co-culture group of BMSCs and endothelial cells, medium group of BMSCs, comparison group. Endothelial cells proliferation and microvessel formation were observed. ResultsEndothelial cells were promoted to proliferate and formate the microvessel in medium group and co-culture group. And the effect was prominence in co-culture group.ConclusionBMSCs can promote the proliferation and microvessel formation of endothelial cells.

Objective To investigate the prevalence and incidence of Keshan disease (KD) and the selenium concentration of food and hair in residents of Yongjin Village, Fuyu County, Heilongjiang Province, national monitoring site, in 2007. Methods According to the Standard of Keshan Disease Surveillance and the Standard of Diagnosis of Keshan Disease(GB 17021-1997), the residents living in the monitoring site were surveyed by clinical examination and electrocardiography. For individuals whose hearts showed abnormalities, a chest X-ray photograph was taken. The selenium concentrations of the residents' food (flour) and hair were assayed by flowing injection hydride generation atomic fluoremetric method(FI-HG-AFM). Results Nineteen KD patients were found from 282 residents in 2007 KD surveillance. The prevalence of KD, latent KD and chronic KD were 6.7%(19/282), 2.8%(8/282) and 3.9%(11/282), respectively. Five of the 8 latent KD cases were newly found. In addition, there were 5 the suspected KD cases, including 2 suspected chronic KD cases. No acute KD or sub-acute KD patients were found in Yongjin Village at this monitoring site this year. The average selenium concentration of children hair and residents food were (0.3197±0.0586)mg/kg and (0.0210±0.0062)mg/kg, respectively. Conclusions New cases of KD continued to emerge, indicating that etiological factors still exist. Therefore, the emphasis of monitoring KD in furore is founding the consummate report of infectious disease system and training the personnel to increase the reliability of monitoring.

OBJECTIVETo study the association of functional bladder capacity with the severity of bedwetting in children with nocturnal enuresis.

METHODSA questionnaire investigation was performed in 1 500 children with nocturnal enuresis and the functional bladder capacity was examined by B-ultrasound.

RESULTSThe ratio of males to females was 1.3:1. The majority of patients (87%) were in an age range of 5-10 years, followed by the 10-14 years group (12%), and the 15-18 years group (1%). Six hundred and thirty-seven patients (42.4%) showed a decreased functional bladder capacity (less than 50% of normal level). The patients were classified into four groups according to the severity of bedwetting (from severe to mild): > or =2 times per night (n=53, 3.5%), > or =7 times per week (n=969, 64.6%), 3-6 times per week (n=380, 25.3%) and 1-2 times per week (n=98, 6.5%). The incidence of the reduction in functional bladder capacity in the above four groups was 79.2%, 48.3%, 29.7% and 14.3% respectively and a significant difference was noted among the four groups.

CONCLUSIONSMost of children with nocturnal enuresis showed decreased functional bladder capacity. Functional bladder capacity is associated with the severity of bedwetting in children with nocturnal enuresis.

Child ; Child, Preschool ; Female ; Humans ; Male ; Nocturnal Enuresis ; physiopathology ; Urinary Bladder ; physiopathology

Adolescent ; Adult ; Ambulatory Surgical Procedures ; instrumentation ; methods ; Child ; Child, Preschool ; Female ; Humans ; Male ; Middle Aged ; Radio Waves ; Tonsillectomy ; instrumentation ; methods ; Young Adult

Objective:To investigate the effect of moxibustion at Shenque (CV 8) on the immune system in rats with different levels of exhaustive exercise.Methods:Fifty-six male Sprague-Dawley (SD) rats were randomly divided into a blank group (n=8),an exhaustive group (n=24),and a moxibustion group (n=24).The exhaustive group was randomly divided into a 1-time exhaustive group,a 4-time exhaustive group and a 7-time exhaustive group,with 8 rats in each group.According to the treatment time,the moxibustion group was randomly divided into a 1-time moxibustion group,a 4-time moxibustion group and a 7-time moxibustion group,with 8 rats in each group.Rats in the exhaustive groups and the moxibustion groups were subjected to replicating the exhaustive swimming models.Rats in each moxibustion group received mild moxibustion for 15 min immediately after the exhaustive modeling,once every other day.Twenty-four hours after the corresponding exhaustive exercise,the rats in each group were tested for the levels of serum immunoglobulin (Ig) G,IgA,IgM and acid phosphatase (ACP),and the morphological changes of spleen tissues were observed.The level of IgA was detected by immunoturbidimetric assay,and the levels of IgG,IgM and ACP were detected by enzyme-linked immunosorbent assay (ELISA).Results:Compared with the 1-time exhaustive group,swimming time of rats in the 4-time exhaustive group was significantly prolonged (P＜0.01),and swimming time of rats in the 7-time exhaustive group was significantly shortened (P＜0.01).Compared with the 7-time exhaustive group,exhaustive swimming time of rats in the 7-time moxibustion group was significantly prolonged (P＜0.01).Compared with the blank group,the IgG level in the 1-time exhaustive group was significantly decreased (P＜0.01),and the levels of IgG,IgA and IgM in the 4-time exhaustive group and the 7-time exhaustive group were all significantly decreased (P＜0.05 or P＜0.01),while the ACP level was increased significantly (both P＜0.01).Microscopically,the number of splenic corpuscles in the 1-time exhaustive group was reduced;the center of some splenic corpuscles in the 4-time exhaustive group was damaged;the number of splenic corpuscles in the 7-time exhaustive group was reduced,and there was no obvious germinal center.Compared with the 4-time exhaustive group,the IgA level in the 4-time moxibustion group was significantly increased (P＜0.01),and the ACP level was significantly decreased (P＜0.01).Compared with the 7-time exhaustive group,the levels of IgG,IgA and IgM in the 7-time moxibustion group were significantly increased (all P＜0.01),and the ACP level was significantly decreased (P＜0.01).Microscopically,the number of splenic corpuscles in the 1-time moxibustion group was reduced;the center of some splenic corpuscles in the 4-time moxibustion group was damaged together with hyperplasia of some splenic corpuscles;blast cells were proliferated in the center of some splenic corpuscles in the 7-time moxibustion group.Conclusion:Moxibustion at Shenque (CV 8) can improve the levels of igG,igA and igM,reduce the ACP level,repair damaged spleen tissues,and enhance the immunity of the body to some extent in the long-term fatigue rats.

OBJECTIVETo evaluate the performance of computer-assisted imaging system in the detection of cervical squamous intraepithelial lesion and quality-assurance.

METHODSManual PAP screening (n = 140 580) and image-assisted screening (n = 32 885) were compared for the detection rates of squamous cell abnormalities, the atypical squamous cells (ASC) to squamous intraepithelial lesion (SIL) ratio, the positive rates of high risk human papillomavirus (HR-HPV) test in the case of atypical squamous cells of undetermined significance (ASC-US), and the correlation between cytopathology and histopathology.

RESULTSCompared with manual screening, computer-assisted imaging system showed increased overall positive detection by 0.32%, decreased detection of ASC by 0.21%, increased detection of low-grade squamous intraepithelial lesion (LSIL) by 0.22%, increased detection of high-grade squamous intraepithelial lesion or worse (HSIL) by 0.31%, and decreased ASC to SIL ratio from 2.59 to 1.60. Computer-assisted imaging system did not change the HR-HPV positive rate of the patients who were ASC-US, or the coincidence rate between cytopathology and histopathology. Moreover, the productivity of the laboratory operation increased 58.33%.

CONCLUSIONComputer-assisted imaging system significantly increases the overall positive detection rate of cervical SIL, improves accuracy and work efficiency of screening, decreases the ASC/SIL rate, and strengths the quality-assurance of laboratory testing.

Carcinoma, Squamous Cell ; pathology ; Cervical Intraepithelial Neoplasia ; pathology ; Female ; Humans ; Image Interpretation, Computer-Assisted ; Papillomaviridae ; isolation & purification ; Papillomavirus Infections ; pathology ; Uterine Cervical Dysplasia ; pathology ; Uterine Cervical Neoplasms ; pathology ; Vaginal Smears ; methods

This study was aimed to investigate the expression of SALL4 and BMI-1 mRNA in acute leukemia (AL) and its clinical significance. mRNA expression levels of SALL4 and BMI-1 in 62 AL patients and 10 controls were measured by semi-quantitative reverse transcription-polymerase chain reaction (RT-PCR). The results showed that (1) the expression of SALL4 mRNA were up-regulated in AL (except M3 and T-ALL), and the expression of of SALL4 mRNA in AML was significantly higher than that in B-ALL (p<0.05); expression was negative in 9 out of 10 controls, and expression level of SALL4 mRNA in one case was low; (2) the expression of SALL4 in de novo AL was higher than that in controls, which significantly decreased at complete remission (CR). The difference between CR group and de novo group was statistically significant (p<0.05). In relapsed patients, the expression of SALL4 increased, slightly higher than that in de novo AL group (p>0.05); (3) the expression pattern of BMI-1 was the same to that of SALL4 except the up-regulation in M3, and the expression of BMI-1 was positively correlated with that of SALL4 in acute leukemia (r=0.684, p<0.01). It is concluded that SALL4 and BMI-1 expressions are up-regulated significantly in acute leukemia, which may contribute to the development of leukemia, thus become an important index for evaluation of development, relapse and prognosis in acute leukemia.
Adolescent ; Adult ; Aged ; Case-Control Studies ; Female ; Humans ; Leukemia ; genetics ; metabolism ; Leukemia, Myeloid, Acute ; genetics ; Male ; Middle Aged ; Nuclear Proteins ; genetics ; metabolism ; Polycomb Repressive Complex 1 ; Prognosis ; Proto-Oncogene Proteins ; genetics ; metabolism ; RNA, Messenger ; genetics ; Repressor Proteins ; genetics ; metabolism ; Transcription Factors ; genetics ; metabolism ; Young Adult

OBJECTIVEThe ability of oral bacteria to adhere to tooth surface is associated with their pathogenicity. The objective of this study was to compare the ability of 4 strains of periodontal pathogens attaching to collagen-treated hydroxyapatite (C-HA) beads in order to evaluate the ability of the main periodontal pathogens to form the biofilm on root surface.

METHODSThe binding amount and binding percentage of 4 strains to C-HA were measured and compared by 3H-labeled binding assay. 4 strains of periodontal pathogens were Fusobacterium nucleatum (F. nucleatum) ATCC 10953, Porphyrin gingivalis (P. gingivalis) ATCC 33277, Prevotella intermedia (P. intermedia) ATCC 25611 and Hemophilic actinomycetemcomitans (H. actinomycetemcomitans) ATCC 29523.

RESULTSThe differences of the percentage of relative adherence between F. nucleatum ATCC 10953 and P. gingivalis ATCC 33277, as well as between H. actinomycetemcomitans ATCC 29523 and P. intermedia ATCC 25611 could not be observed. However, the percentage of relative adherence of F. nucleatum ATCC 10953 and P. gingivalis ATCC 33277 was higher than that of P. intermedia ATCC 25611 and H. actinomycetemcomitans ATCC 29523 (P<0.001), no matter cultured 24 h or 48 h. No significant difference of the percentage of the relative adherence of each stain between 24 h and 48 h cultured time could be found.

CONCLUSIONF. nucleatum and P. gingivalis exhibited strong binding ability to C-HA. Their adherence to root surface may play an important role in their local aggregation, biofilm formation during the development and recurrence of the periodontitis.

Aggregatibacter actinomycetemcomitans ; Bacteria ; Collagen ; Durapatite ; Fusobacterium nucleatum ; Humans ; Periodontitis ; Porphyromonas gingivalis ; Prevotella intermedia