Objective: To explore whether short hairpin RNA (shRNA) targeting Bcl-2 can enhance the inhibitory effect of methotrexate (MTX) on growth of subcutaneously-transplanted human lymphoma in nude mice. Methods: Recombinant shRNA expression vector targeting the coding region of Bcl-2 mRNA was constructed and preserved in our lab. Human lymphoma Raji cells were injected subcutaneously into 45 nude mice to establish lymphoma models. The polyethylenimine (PEI)/shRNA complex and (or) MTX were injected into tumors. The influence of Bcl-2 shRNA and (or) MTX on tumor growth was observed. The animals were sacrificed 21 days after administration of drugs and the tumors were removed and weighed; the tumor inhibitory rate was calculated. H-E staining was used to observe the pathological morphology of the tumor. The expression of Bcl-2 mRNA in the tumor tissues was examined by RT-PCR. Results: The tumor growth was significantly slower in Bcl-2 shRNA/MTX group than in Bcl-2 shRNA or MTX alone groups (P<0.05). The tumor weight of mice in Bcl-2 shRNA plus MTX group was significantly lower than those in negative shRNA and blank plasmid group (P<0.05). The inhibition rate of tumor growth in Bcl-2 shRNA/MTX was significantly higher than those in the Bcl-2 shRNA or MTX alone groups (P< 0.05). H-E staining showed obvious apoptosis and necrosis in Bcl-2 shRNA group and MTX group. RT-PCR result showed that the expression of Bcl-2 mRNA in tumor cell suspension was significantly decreased in Bcl-2 shRNA group (P<0.05), and kept unchanged in the control group. Conclusion: The shRNA targeting Bcl-2 can enhance the inhibitory effect of MTX on the growth of subcutaneously transplanted human lymphoma in nude mice.

Actins ; genetics ; Adolescent ; Cardiomyopathy, Dilated ; genetics ; Child ; Child, Preschool ; Desmin ; genetics ; Female ; Humans ; Infant ; Male ; Mutation

Aim To observe the changes of endothelin receptors and their subtypes of left ventricules in normal SD rats and dilated cardiomyopathy rats. Methods To establish the best conditions of the binding experiment, different protein concentrations, incubation temperature ?and?incubating?time?were?tested? with 125 I-ET-1 ligand respectively. With the selected conditions, saturation binding experiments were performed to determine the amount of endothelin receptor and its subtypes in normal SD rats and in dilated cardiomyopathy ones. Results (1) The optimal incubating temperature was 37 ℃. Under this condition, the binding amount of 125 I-ET-1 increased rapidly in 0～30 minutes, and reached to saturation point at 60 minutes, and there was a linear correlation between 125 I-ET-1 binding amount and cell membrane protein concentration. (2) Endothelin-1, bosentan,BQ123,BQ788 etc. could competitively suppress the bound of 125 I-ET-1 to endothelin receptors. (3) The amount of endothelin receptor in left ventricle of dilated cardiomyopathy rats was ( 92.21? 34.34) nmol?kg -1 protein, which was significantly low than that in normal SD ones. There was no change on the ratio of endothelin receptor subtypes A and B. Conclusion 125I-ET-1 can be used to determine the amount of endothelin receptor and its subtypes in varied tissues specifically. The amount of endothelin receptor in left ventricle of dilated cardiomyopathy rats is down regulated, but the ratio of endothelin receptor subtype A vs B remains to be 21.

Adult ; Breast Neoplasms ; metabolism ; pathology ; secondary ; Carcinoid Tumor ; metabolism ; pathology ; surgery ; Carcinoma, Adenoid Cystic ; pathology ; Carcinoma, Lobular ; metabolism ; pathology ; secondary ; Cervical Intraepithelial Neoplasia ; metabolism ; pathology ; surgery ; Chromogranin A ; metabolism ; Diagnosis, Differential ; Female ; Humans ; Hysterectomy ; Keratins ; metabolism ; Neoplasms, Multiple Primary ; metabolism ; pathology ; surgery ; Ovarian Neoplasms ; metabolism ; pathology ; Sex Cord-Gonadal Stromal Tumors ; metabolism ; pathology ; Synaptophysin ; metabolism ; Uterine Cervical Neoplasms ; metabolism ; pathology ; surgery

OBJECTIVETo explore the clinical efficacy and action mechanism of acupuncture for premature ovarian failure (POF).

METHODSAccording to prospective cohort study design, 30 cases were included. Based on theory of regulating Chong and Conception Vessels as well as soothing the liver and calming the nerves, acupuncture at Guanyuan (CV 4), Dahe (KI 12), Taixi (KI 3), Taichong (LR 3), Baihui (GV 20) was applied, three times per week and 3 months were considered as one session. Totally two sessions were performed. The menstruation condition, estradiol (E2), follicle-stimulating hormone (FSH) and scores of the clinical perimenopausal symptoms were taken as treatment outcomes.

RESULTSThe total effective rate was 86.7% (26/30) and the cured rate was 16.7% (5/30). The recovery rate of menstruation was 16.7% (5/30) and the regain rate of menstruation was 56.7% (17/30). After the treatment, the level of E2 was significantly increased from (45.41 +/- 18. 09) pmol/L to (59.07 +/- 24.21) pmol/L (P < 0.05), and the score of perimenopausal symptoms was obviously reduced from 14.28 +/- 8. 30 to 4.04 +/- 3.28 (P < 0.01). However, no statistical differences could be seen in FSH before and after treatment (P > 0.05).

CONCLUSIONAcupuncture has certain effect on improving menstruation and perimenopausal symptoms in POF patients, which is likely to he related with increasing the level of E2.

Acupuncture Therapy ; Adolescent ; Estradiol ; metabolism ; Female ; Humans ; Luteinizing Hormone ; metabolism ; Primary Ovarian Insufficiency ; metabolism ; therapy ; Prospective Studies ; Young Adult

Bone Neoplasms ; Humans ; Ilium ; Paraganglioma ; Sacrum

Objective To explore the effect of nitric oxide (NO) on ?-aminobutyric acid B receptor (GABA_BR) subunits during recurrent febrile seizures (FS).Methods Twenty-four Sprague-Dawley rats aged 21 days were randomly divided into 4 groups: control group (37.0 ℃ water,n=8), FS group (45.2 ℃ water,n=8), FS + SNP group (45.2 ℃ water,n=8), FS+L-NMMA group (45.2 ℃ water,n=8). FS rats were induced 10 times in a warm-water bath, once every 2 days. The plasma level of NO was detected by the spectrophotometer. The expressions of GABA_BR subunit mRNA and c-fos gene were examined by in situ hybridization. The expressions of GABA_BR subunit and Fos protein were observed by immunohistochemistry. Results The plasma level of NO increased in FS + SNP group while decreased in FS+L-NMMA group compared with that in FS group. The expressions of GABA_BR_2 were down-regulated in FS+SNP group, while GABA_BR_1 hardly changed compared with those in FS group. In FS+L-NMMA group, both the expression of GABA_BR_2 and GABA_BR_1 up regulated compared with those in FS group. The expressions of c-fos gene and Fos protein were significantly enhanced after recurrent FS. SNP elevated the expressions of c-fos gene and Fos protein, while L-NMMA down regulated the expressions of them.Conclusion NO may play a regulatory role through modulating GABA_BR function in the pathogenesis of recurrent FS.

Objective To explore the influence of ?-aminobutyric acid B receptor(GABA_BR)on carbon monoxide (CO)/heme oxygenase(HO-1)system during recurrent febrile seizures (FS).Methods Sprague-Dawley rats aged 21 days were randomly divi- ded into 4 groups:control group and FS group,FS+baclofen group,FS+phaclofen group.FS in rats were induced 10 times in a bath of warm water, once every 2 days.The plasma level of CO was detected by the dual wave lengh spectrophotometer;the expressions of GABA_BR and HO-1 mRNA were examined by insitu hybridization;the expressions of GABA_BR and HO-1 protein were observed by immunohistochemistry.Results The plasma level of CO increased in FS+baclofen group,while decreased in FS+phaclofen group compared with FS group.The expressions of GABA_BR and HO-1 upregulated in FS+baclofen group,while decreased in FS+phaclofen group compared with FS group.There were significant difference (All P

0.05).The different tilt angles impacted patients' fear psychology(?2=8.038,P=0.018).The order of the extent of children's fear psychology represented from low to high at the angle of 60?,70? and 80?,respectively.The extent of the children's fear psychology had positive correlation with the tilt angle(r=0.669,P=0.002).Conclusions The tilt test angle does not affect the positive rate of HUTT and the hemodynamics in children undergoing HUTT with angles from 60? to 80?.The children at the tilt angle 60? had less fear than at the angle of 70? or 80?.The 60? tilt angle of HUTT in children is recommended in the clinical practice.

Objective To study effects of early non-invasive ventilation (NIV) application in treating elderly patients with acute left ventricular failure induced respiratory failure. Method Totally 32 elderly patients with acute left ventrieular failure induced respiratory failure, admitted from August 1997 to February 2007, received NIV treatment, and were retrospectively studied. There were 22 male and 10 female, aged (81.5?8.6) yearsdd. The changes of rahs, respiration rate, heart rate, arterial blood gas, cardiac function before and after NIV application were compared. According to the application time of NIV, 32 patients were divided into two groups: group A (early NIV application group, n=17) and group B (non-early NIV application group, n= 15). The time to improve the symptoms, the application time of NIV, cure rates, tracheal intubation rates and mortality were compared between the two groups. Results Thirty of the 32 patients survived, cardiac function was improved from New York classⅣtoⅠ～Ⅱ, respiratory rate, heart rate and blood pressure significantly decreased, PaO_2 and SaO_2 significantly increased and PaCO_2 significantly decreased. The tracheal intubation was performed in 4 patients. The time needed to improve the symptoms and the application time of NIV were significantly different between group A and group B (P