Progestagen-associated endometrial protein (PAEP) gene mainly expresses in the secretory phase endometrium and decidua in early trimester of pregnancy.In recent years,it is reported that PAEP is abnormally expressed in many kinds of tumors,such as breast cancer,endometrial carcinoma,ovary cancer,stomach cancer and melanoma.PAEP gene plays an important role in tumorigenesis and tumor development.The application of PAEP gene as an indicator for clinical diagnosis,prognostic and therapy needs further studies on the influence of PAEP gene on tumor biological behaviour.

Objective To evaluate the diagnostic value of sonohysterography (SHG)in uterine cavity diseases. Methods 48 patients suspected to suffer from uterine cavity diseases on the basis of transvaginal sonography underwent sonohysterography,hysteroscopy and biopsy.The results of sonohysterography were compared with those from hysteroscopy and biopsy. Results The diagnostic accuracy,sensitivity,specificity of SHG in detecting abnormal uterine cavities were 93.8%(45/48),91.4%(32/35),100%(13/13) and respectively. Conclusions SHG is a simple,effective and cheap method in the detectiou of uterine cavity diseases.

Flow injection on-line sorption preconcentration and separation in a knotted reactor (KR) was coupled to cold vapor atomic fluorescence spectrometry for the determination of trace mercury in mineral water. Mercury was preconcentrated by on-line formation of mercury diethyldithiocarbamate complex (Hg-DDTC) and absorption of the resulting neutral complex on the inner walls of a knotted reactor. A 20%(V/V) HNO3 solution heated by electromagnetic induction heating technique was used as eluent to remove the absorbed Hg-DDTC from the KR, and then the vapor mercury generated by mixing the resulting solution and KBH4 was determined on-line by cold vapor atomic fluorescence spectrometry. The 20% HNO3 was employed as both the efficient eluent and the required acidic medium for subsequent mercury vapor generation in our work. Using 20% HNO3 instead of conventional organic solvent as eluent, the proposed method is simple, easy operational and environmentally friendly. Under the optimal experimental conditions, the sample throughput was approximatively 30/h with an enhancement factor of 35. The detection limit of mercury was 2.0 ng/L. The precision(RSD, n=11) was 2.2% at the 0.1 μg/L Hg2+ level.

Objective To study the inhibitory effect on the expression of regulated upon activation,normal T cell expressed and secreted (RANTES) and monocyte ehemotactic activity of ectopic endometrial stromal cells by nuclear factor(NF)-kB decoy oligonucleotides (ODN). Methods The stromal cells of ectopic endometrium were divided into 3 groups. Two groups were cultured with or without 10 μg/L of interleukin (IL)-1β. Another group was transfected with NF-kB decoy ODN with the aid of a lipofectamine reagent. After 4 h of transfection, 10 μg/L of IL-1β was added to induce the stromal cells to secrete RANTES. Concentration of RANTES in the supernatant at 4, 8, 12, 24 and 36 h was measured with the sandwich enzyme linked immunosorbent assay (ELISA). U937 monocyte chemotactic activity was assayed in Boyden chambers. The specific RANTES-neutralizing monoclonal antibodies at serial doses (0. 5, 1, 2, 4and 8 mg/L) were added into IL-1β induced medium of 24 h to detect the monocyte chemotactic activity of RANTES in supernatant. Results The concentration of RANTES secreted by stromal cells was respectively (58 ± 10), ( 150 ± 35 ), ( 360 ± 46 ) and ( 586 ± 42 ) ng/L after IL-1β stimulation for 8,12,24 and 36 h,significantly higher than that of stromal cells cultured without IL-1β. The concentrations of RANTES were respectively (86±16), ( 128±28 ) and ( 183±32) ng/L after IL-1β stimulation for 12, 24 and 36 h in stromal cells transfected with NF-kB decoy ODN, evidently lower than that of stromal cells stimulated with IL-1β alone. The monocyte ehemotactic index of 12, 24, 36 h in conditioned medium of stromal cells transfected with NF-kB decoy ODN was respectively 10. 3 ± 0. 9, 13.7 ± 1.1, 18.6 ± 1.2, which was evidently lower than that of stromal cells stimulated with IL-1β alone. The anti-RANTES antibody at 0. 5, 1,2, 4 and 8 mg/L inhibited respectively 5%, 23%, 40%, 62% and 61% of the chemotactic activity in 12 h medium treated with IL-1β. Conclusions RANTES accounts for the majority of the monocyte chemotactic activity in IL-1β induced medium of 24 h. NF-kB decoy ODN may influence the feed-forward inflammatory loop whereby IL-1β from activated macrophages can lead to RANTES production by ectopic implants and further monocyte chemotaxis.

@@

Aim To investigate the effect of astragalo-side IV ( ASIV) on myocardial energy metabolism and mitochondrial biosynthesis in myocardial cells of dia-betic rats induced by streptozotocin ( STZ ) . Methods
50 SD rats at 6 weeks of age were assigned to 5 groups,10 for each group:control group, model group, ASIV 10 mg·kg-1 ·d-1 group, ASIV 20 mg·kg-1 ·d-1 group, ASIV 40 mg·kg-1 ·d-1 group. Except the control group,the remaining 40 were used to estab-lish type 1 diabetes model by the tail vein injection of STZ (35 mg·kg-1 ) . At the end of 16 weeks of treat-ment, left ventricular systolic pressure ( LVSP ) , left ventricular diastolic final pressure ( LVEDP ) and left ventricular maximum rising/falling rate ( ± dp/dtmax ) were tested. Pathological section was observed by HE staining. ATP, ADP, AMP levels were detected by ELISA. The expressions of PGC-1α and NRF-1 protein were assessed by Western blot. The expressions of PGC-1α and NRF-1 mRNA were determined by RT-PCR. Results Compared with control group, model group markedly elevated LVEDP and decreased LVSP, ± dp/dtmax , ATP/AMP and ATP/ADP ratio. Com-pared with model group, low-dose ASIV group did not change significantly,middle-dose ASIV group and high-dose ASIV group obviously decreased LVEDP, and im-proved LVSP, ± dp/dtmax , ATP/ADP and ATP/AMP ratio. Meanwhile, the expressions of PGC-1α and NRF-1 protein and mRNA were increased in a dose-de-pendent manner. Conclusion ASIV could promote mitochondrial biosynthesis, improve energy metabolism in myocardial cells of type 1 diabetic rats by PGC-1αand NRF-1 .

Objective: To explore the effect of lipopolysaccharide intervention program on Legionella pneumonia. Methods: C3H/HeN mice (6-8 weeks old) were used as experimental animals. The mice were randomly divided into lipopolysaccharide intervention, non-lipopolysaccharide intervention and control groups. Each group was again divided into three time points: 12 h, 24 h and 48 h. Mice in the lipopolysaccharide intervention group were intraperitoneally injected with E. coli lipopolysaccharide (100 ng per mice), and the rest groups were intraperitoneally injected with normal saline. After 24 hours, mice in the lipopolysaccharide intervention and the non-intervention groups mice were infected with Legionella by tracheal injection and the control group was given the same amount of saline. All the mice were killed at 12, 24 and 48 hours respectively. The mice were anatomized, lungs of the mice were separated and weighed. Organ coefficients (lung weight/body weight of mice) were calculated. 1 ml Orbital blood was collected. Toll-like receptor 4 (TLR4) levels of peripheral blood mononuclear cells were measured by flow cytometry. The contents of TNF-α and IL-1β in the upper left lung lobe were measured by ELISA. Results: In the lung organs, the coefficients of lipopolysaccharide non-intervention group were higher than the other groups and there was no significant difference seen between the lipopolysaccharide intervention group and the controls. TLR4 peaked at 12 hours in both the lipopolysaccharide intervention and the non-intervention groups while the TLR4 level in the intervention group was higher than that in the non-intervention group. There were no significant differences appeared on the TLR4 expression levels between the two Legionella pneumonia modelled groups at 24 or 48 hours. There was no significant difference seen regarding the concentration of TNF-α and IL-1β between the intervention and the control groups. The secretion levels of TNF-α and IL-1β in the non-intervention group were higher than those in the intervention group at each time point. Conclusion The lipopolysaccharide intervention program may alleviate the inflammatory symptoms of Legionella infection.

Hypoxemia is a common complication of pneumonia, asthma, and bronchopulmonary dysplasia in children.Rapid identification of hypoxemia is of great significance for the disposal and management of critical children.Pulse oximetry is recognized by the World Health Organization as the best way to monitor hypoxemia in children, and it can monitor pulse oxygen saturation noninvasively and continuously.Based on the related literature at home and abroad, combined with the clinical needs of pediatrics, the " Expert consensus on clinical application of pulse oximetry in children" is formulated to improve the understanding of pediatricians and nurses on the application in pediatric clinical practice, principle, operation techniques, and limitations of pulse oximetry.

OBJECTIVETo explore the protection function of rapamycin in hematopoietic system damage induced by irradiation.

METHODSSix to eight week old C57BL/6J male mice were used for experiment. Mice received 4 mg/kg rapamycin by i.p.injection every other day for 5 times. The day after the last injection, mice were exposed to a dose (5 Gy) of total body irradiation (TBI). Peripheral blood was measured by a complete blood count at 0.5, 1, 2, 3, 5, 7, 40, 70 days after TBI. The hematoxylin-eosin staining was used to observe the pathologic changes in sternum obtained from mice at day 5 after TBI. CFU-S of spleen was measured by immerging in Tellyesniczky solution for 24 h at day 5 after TBI.

RESULTSBefore TBI, WBC and LYM decreased in rapamycin-treated mice compared with control (P<0.01); RBC and HGB increased (P<0.05); there was no difference in PLT; HE staining of bone marrow from rapamcin-treated and control mice before irradiation showed no difference in marrow cellularity. After TBI, WBC and LYM decreased significantly, with no difference at 0.5 d to 7 d between rapamycin-treated and control. The counts of WBC and LYM in rapamycin-treated mice restored to normal at 40 d and 70 d. RBC and HGB decreased at irradiation group at 3 d to 7 d, but rapamycin stimulated them to a higher level, both of them tended to normal at 40 d and 70 d. HE staining of bone marrow after 5 day of 5 Gy irradiation, nucleated cells in control decreased significantly, but restored in rapamycin-treated mice. CFU-S results showed the colony number in rapamycin-treated mice was much higher than control mice after 5 Gy irradiation, with 40.00±12.86 and 13.20±2.31 (P=0.035), respectively.

CONCLUSIONAdministration of rapamycin to mice before irradiation protected the mice from hematopoietic damage induced by irradiation by maintaining the bone marrow nucleated cells, slowing down decrease and promoting the restoration of peripheral blood cells and protecting hematopoitic stem/progenitor cells in spleen.

Animals ; Blood Cell Count ; Blood Cells ; Bone Marrow ; Bone Marrow Cells ; Hematopoietic System ; Male ; Mice ; Mice, Inbred C57BL ; Sirolimus ; Spleen ; Whole-Body Irradiation