Agricultural Workers' Diseases ; Humans ; Musculoskeletal Diseases

Objective To investigate the dynamic changes of plasma myoglobin(Mb),troponinⅠ(TnⅠ) and brain natriuretic peptide(BNP)levels in the course of acute myocardial infrction(AMI)and to detect the best marker for early diagnosis and outcome prediction.Methods Plasma Mb,TnⅠand BNP levels were measured in 49 patients with AMI both before and after thrombolysis therapy and 32 controls.Results Plasma levels of all the three markers were significantly higher in the AMI patients than those in the controls(P

The gap between foreign and domestic medical and health information construction levels was described and the major factors that influence the domestic medical and health information construction level were analyzed by analyzing the medical and health information construction levels in USA, Britain, Canada, Germany, Japan, Aus-tralia and China according to the input-output data in WIOD, with suggestions put forward for the improvement of domestic medical and health information construction.

No abstract available.
Lipoma* ; Scalp*

Objective To analyze the clinical and imaging features of pulmonary metastasis of giant cell tumor of bone for clinical diagnosis and treatment.Methods Five patients with histologically proven pulmonary metastasis from giant cell tumor of bone were reviewed,the imaging features and the progression of the pulmonary metastasis were evaluated.Results The first operation of primary tumor was curettages and then local recurrence was seen in all 5 cases.The interval to metastasis ranged from 5 to 26 months.Pulmonary metastasis was diagnosed by chest radiographs in 4 cases and CT in all 5 cases.The imaging findings included solitary solid nodule (n =1),multiple solid nodules and mass (n =5),multiple groundglass nodules (n =1) and complex form (n =2).The dynamic follow-up CT findings showed spontaneous regress nodules (n =1),metastasis occurring again 19 months after surgery of solitary nodule (n =1),some solid nodules unchangable for a long time in 3 patients with multiple nodules.Conclusions The dynamic follow-up CT findings of pulmonary metastasis of giant cell tumor of bone are specific.The regular follow-up could play an essential role in early detection and prognosis of pulmonary metastasis within 2 years after primary tumor diagnosed.

Objective To analyse incidence of the severe complications of hypertensive disorder complicating pregnancy and the influence on the outcome of pregnancy.Methods A retrospective study of 4107 cases among 71 020 cases who delivered in hospitals from 1995 to 2004 in Guangzhou was conducted. Results The morbidity of hypertensive disorder complicating pregnancy was 5.78%,in which the morbidity of severe pre-eclampsia was 27.78% (1141/4107),of mitis pre-eclampsia was 72.22% (2966/4107). Maternal mortality rate was 0.19% (8/4107),and the specific mortality rate was 11.26/100 000.The proportion of severe complications of hypertensive disorder complicating pregnancy from high to low was as follows:placental abruption 1.68% (69/4107),DIC 1.36% (56/4107),hypertensive disorder complicating pregnancy induced cardiopathy(induced cardiopathy) 1.05% (43/4107),renal failure 0.97% (40/4107),cerebrovascular accident 0.58% (24/4107),and hemolysis,elevated liver enzymes and low platelet (HELLP) syndrome 0.51% (21/4107).Mortality caused by severe complications of hypertensive disorder complicating pregnancy were as follows:cerebrovascular accident 17% (4/24),HELLP syndrome 10% (2/21),DIC 5% (3/56) and induced cardiopathy 2% (1/43).The proportion of perinatal mortality from severe complications were as follows:placental abruption 43% (33/77),HELLP syndrome 42% (10/ 24),DIC 34% (22/64),renal failure 25% (11/44),cerebro vascular accident 24% (6/25)and induced cardiopathy 16% (8/49).Conclusions (1) The morbidity of severe complications from high to low are: placental abruption,DIC,induced eardiopathy,renal failure,eerebro vascular accident and HELLP syndrome.(2) The main causes of mortality for gravida and puerperant are:cerebro vascular accident, HELLP syndrome,DIC and induced cardiopathy.(3) The major complications harmful to perinatal newborns are in the order of:placental abruption,HELLP syndrome,DIC,renal failure,eerebro vascular accident and induced cardiopathy.

Objective To investigate the diagnostic value of DWI on nasopharyngeal neoplasm recurrence and fibrotic lesions after radiotherapy.Methods A retrospective analysis of pathologically confirmed nasopharyngeal neoplasm was performed in 39 patients with recurrent patients ( recurrence group ) confirmed by biopsy or MRI follow-up and 51 patients with confirmed localized fibrosis (fibrosis group) after radiotherapy.All patients underwent DWI , non-enhanced and enhanced MR scan.DWI findings and ADC values of the lesions in two groups of patients were observed and measured , then compared by using independent samples t test.Diagnostic performance of routine MRI and DWI in the diagnosis of nasopharyngeal neoplasm recurrence after radiotherapy was calculated by using ROC analysis and the differences of both of them were analyzed by using Z test.Results DWI of 39 recurrent patients showed hyper-intensity signal and ADC map showed hypo-intensity signal appearance.Overall signal of DWI in 51 recurrent patients is lower than that in recurrent group , in which ADC maps of 36 cases showed iso-intensity or moderately hypo-intensity signal appearance and the remaining 15 cases showed moderate hyper-intensity signal appearance.The ADC values of recurrent group and fibrotic group were (0.753 ±0.127) × 10 -3 mm2/s, and ( 1.233 ± 0.310 ) ×10 -3 mm2/s, respectively.The difference was statistically significant ( t=-9.118, P<0.05).On the ROC curve, the sensitivity of ADC for the diagnosis of tumor recurrence was 87.18%(34/39), specificity 94.12%(48/51) and area under the ROC curve 0.968 with the ADC cutoff value of 0.887 ×10 -3 mm2/s.The sensitivity of routine MRI was 71.79% ( 28/39 ) , the specificity 74.51% ( 38/51 ) and the area under the ROC curve was 0.732 for the diagnosis of tumor recurrence.The difference of area under the curve between them was statistically significant ( Z=4.583, P<0.01).Conclusion DWI can help tumor detection and diagnosis of recurrent nasopharyngeal neoplasm and has a higher diagnostic performance compared with routine MRI.

Objective To explore effect of 5 -aminolevulinic acid -photodynamic therapy combined with thymopentin -5 on IL -17,IL -23 expression of recurrent condylomata acuminata patients.Methods 140 patients with recurrent condylomata acuminata were randomly divided into 3 groups.53 cases in observation group were treated by 5 -aminolevulinic acid -photodynamic therapy combined with thymopentin -5,42 cases in control group 1 were treated by 5 -aminolevulinic acid -photodynamic therapy,and 45 cases in control group 2 were treated by thymopen-tin -5.24 healthy subjects were served as normal controls.IL -17,IL -23 levels were determined by enzyme linked immunosorbent assay before and after the clinical therapy.Results IL -17,IL -23 levels in the patients with recur-rent condylomata acuminata were significantly lower than those in healthy subjects(t =28.10,P <0.01;t =11.10, P <0.01).There were significant differences in IL -17,IL -23 between recurrent condylomata acuminata patients and healthy persons before treatment.There was significant difference after treatment(t =61.17,P <0.01;t =28.02, P <0.01).Conclusion 5 -aminolevulinic acid -photodynamic therapy combined with thymopentin -5 in the treat-ment of recurrent condylomata acuminata inhibited IL -17,IL -23 expression,so as to achieve therapeutic effect.

Induced pluripotent stem cells (iPSCs) can be propagated indefinitely, while maintaining the capacity to differentiate into all cell types in the body except for the extra-embryonic tissues. This iPSC technology not only represents a new way to use individual-specific stem cells for regenerative medicine but also constitutes a novel method to obtain large numbers of disease-specific cells for biomedical research. However, the low efficiency of reprogramming and genomic integration of oncogenes and viral vectors limit the potential application of iPSCs. Chemical-induced reprogramming offers a novel approach to generating iPSCs. In this study, a new combination of small-molecule compounds (SMs) (sodium butyrate, A-83-01, CHIR99021, Y-27632) under conditions of transient folate deprivation was used to generate iPSC. It was found that transient folate deprivation combined with SMs was sufficient to permit reprogramming from mouse embryonic fibroblasts (MEFs) in the presence of transcription factors, Oct4 and Klf4, within 25 days, replacing Sox2 and c-Myc, and accelerated the generation of mouse iPSCs. The resulting cell lines resembled mouse embryonic stem (ES) cells with respect to proliferation rate, morphology, pluripotency-associated markers and gene expressions. Deprivation of folic acid, combined with treating MEFs with SMs, can improve the inducing efficiency of iPSCs and reduce their carcinogenicity and the use of exogenous reprogramming factors.

The intestinal absorption of berberine (Ber) and its structural modified compound 8-hydroxy dihydroberberine (Hdber) was compared, and their effects on the intestinal absorption of sugar by perfusion experiment were investigated in order to reveal the mechanism of low dose and high activity of Hdber in the treatment of hyperglycemia. The absorption of Hdber and Ber in rat small intestine was measured by in situ perfusion. High performance liquid chromatography (HPLC) was used to determine the concentrations of Hdber and Ber. In situ perfusion method was also used to study the effects of Hdber and Ber on sugar intestinal absorption. Glucose oxidase method and UV spectrophotometry were applied to examine the concentrations of glucose and sucrose in the perfusion fluid. The results showed that the absorption rate of Ber in the small intestine was lower than 10%, but that of Hdber was larger than 70%. Both Hdber and Ber inhibited the absorption of glucose and sucrose at the doses of 10 and 20 μg/mL. However, Hdber presented stronger activity than Ber (P<0.01). It is suggested that Hdber is absorbed easily in rat small intestine and that its inhibitory effect on the absorption of sugar is better than Ber.