BACKGROUND:Matrix metal oproteinase-13 is most active in the degradation of col agen type II in the extracel ular matrix of cartilage. Interleukin-1 (IL-1) is thought to be the inducer of matrix metal oproteinases, and participates in the degradation and degeneration of articular cartilage. OBJECTIVE:To study the influence of IL-1βon microRNA-27b (miR-27b) and matrix metal oproteinase-13 expression of chondrocytes in rats. METHODS:Chondrocytes isolated from seven male Wistar rats were cultured and divided into IL-1βstimulation group and control group. No stimulus was given in the control group;10μg/L of serum free medium was used to culture rat chondrocytes in the IL-1βstimulation group. Cel growth was observed at 0, 24, and 48 hours under an inverted microscope. miR-27b and matrix metal oproteinase-13 expression in the cultured chondrocytes were detected. RESULTS AND CONCLUSION:The relative expression of matrix metal oproteinase-13 in rat chondrocytes was gradual y increased when induced by IL-1βat 0, 24, and 48 hours (P<0.05). Expression of miR-27b and miR-31 in rat chondrocytes at 24 and 48 hours induced by IL-1βgradual y decreased (P<0.05);conversely, expression of MiR-26a, miR-26b, miR-23, and miR-204 gradual y increased (P<0.05). After 48 hours of IL-1βinduction, expression of miR-27b was the lowest in rat chondrocytes (P<0.05). These findings suggest that IL-1βinhibits miR-27b expression, strengthens the expression of matrix metal oproteinase-13, and damages chondrocytes, contributing to both the onset and progression of osteoarthritis.

ObjectiveTo observe the effect of Jiuqiang Naoliqing (JNQ) on the behavior of Kunming mice.MethodsSpontaneous movement, Morris Water Maze, Rotarod, anti caffeine test, sleeping time of pentobarbital sodium, subthreshold dose of pentobarbital sodium, and anti pentylene tetrazol test were adopted to evaluate the behavioral changes. ResultsCompared with the control group, the low dose of JNQ can increase spontaneous movement of the mice, the middle and high dose of JNQ can increase time on the rotating rods. JNQ can also increase sleeping time of pentobarbital sodium test and percent of falling asleep in subthreshold dose of pentobarbital sodium test, as well as antagonize caffeine's effect on mice. ConclusionJNQ can also do sedative and hypnotic effect on Kunming mice as well as improve their ability of balance and coordination.

OBJECTIVETo clone the gene coding for the peptidoglycan recognition protein (PGRP) domain (PGRPd) of mouse long PGRP (mPGRP-L) and express the protein in E. coli.

METHODSThe cDNA fragment encoding PGRPd of mPGRP-L was obtained by RT-PCR from the total RNA of Balb/C mouse liver cells and cloned into pUCm-T vector. The recombinant plasmid were identified by PCR, restriction endonucleases and sequence analysis. The PGRPd gene fragment was amplified by PCR from the recombinant plasmid, inserted into pQE-30 vector and transformed into E. coli strain M15, and the expressed PGRPd protein was purified.

RESULTSA cDNA fragment of about 500 bp was amplified by RT-PCR and the recombinant plasmid, pmPGRPd, was constructed by linking the fragment to pUCm-T vector. The results of restriction mapping of the recombinant vector were consistent with those of computer analyses. Sequence analysis showed that the cloned gene fragment (518 bp) had identical sequence with the gene encoding PGRPd of mPGRP-L gene in GenBank. The recombinant expression vector pQE-PGRPd was constructed and expressed in E. coli M15. SDS-PAGE showed that the expressed product existed mainly in the lysate supernatant as a soluble protein with relative molecular mass of 29 kD.

CONCLUSIONThe PGRPd cDNA of mPGRP-L has been successfully cloned and expressed in E. coli, which provides the basis for further study of PGRP molecule.

Animals ; Base Sequence ; Carrier Proteins ; genetics ; Cloning, Molecular ; DNA, Complementary ; genetics ; Escherichia coli ; genetics ; metabolism ; Female ; Liver ; chemistry ; Mice ; Mice, Inbred BALB C ; Molecular Sequence Data ; Plasmids ; genetics ; Prokaryotic Cells ; metabolism ; Protein Structure, Tertiary ; genetics ; Recombinant Proteins ; biosynthesis ; genetics

OBJECTIVETo assess the level of language understanding and expression of healthy children aged from 8 to 16 months in urban Beijing and to investigate the children's physical and psychological development conditions and social and economic status of children's family as to identifying the related factors to children's language development and providing a basis for instructing parents child-rearing and promoting early children language development.

METHODSA quantitative Cross-sectional Study was made. The parents or care givers of 636 healthy young children, randomly stratified and selected in two districts in Beijing were interviewed. T-test was used to compare the scores of language understanding and expression between boys and girls in the same age. Single and multiple factors analysis were used so as to find out the related factors.

RESULTSFor boys, the average scores of language were respectively 115.0 for 8 months, 243.0 for 12 months and 410.6 for 16 months; for girls the average scores were respectively 109.9 for 8 months, 286.4 for 12 months and 456.2 for 16 months. The average score of language understanding of boys was higher than that of girls only in the 11 month group. The average scores of language expression of girls were higher than those of boys in 11, 12, 14, 15 month groups. Multiple factors analysis showed that parent-child book reading, parent-child tape listening, higher education level of grandmothers, children' extroversion personality, child being able to speak one word and children's age were positively related to the children' language score.

CONCLUSIONProviding rich language environment should be helpful to early children's language development.

China ; Cross-Sectional Studies ; Female ; Humans ; Infant ; Language Development ; Male ; Reading ; Speech ; Surveys and Questionnaires ; Urban Population ; statistics & numerical data

OBJECTIVETo assess the efficacy and safety of percutaneous cryoablation (PCC) and (125)I seed implantation combined with chemotherapy for advanced pancreatic cancer.

METHODSSixty-seven patients with advanced pancreatic cancer (6 in stage III, 61 in stage IV) received PCC and (125)I seed implantation combined with concomitant gemcitabine hydrochloride and DDP chemotherapy. The clinical benefit response (CBR), survival rate and therapy-related complications were assessed.

RESULTSAll patients except one were followed up over 1 year. The 6-month and 1-year survival rates were 84.8% and 33.4%, respectively. The median progression free survival were 6.3 months and 5.5 months in the group stage III and group stage IV (P > 0.05), respectively, while the overall survival was 9.1 months in the group stage III and 11.0 months in the group stage IV (P > 0.05). CR,PR and SD were achieved in 5, 8, 54 patients, respectively. Fifty-four and 50 in the 67 patients experienced a ≥ 50% reduction of pain score and analgesic consumption, respectively, 18 patients experienced a ≥ 2 kg weight gaining, and KPS was increasing from 71.2 ± 0.4 to (90.0 ± 0.3, P < 0.05), the overall benefit rate was 80.6%. No serious therapy-related complications except pancreatic fistula accompanied abdominal hemorrhage, bile leakage, acute pancreatitis and needle track seeding in 1, 1, 2 and 1 case, respectively.

CONCLUSIONPercutaneous cryoablation and (125)I seed implantation combined with chemotherapy are effective and safe for the treatment of advanced pancreatic cancer.

Adult ; Aged ; Aged, 80 and over ; Antineoplastic Combined Chemotherapy Protocols ; therapeutic use ; Brachytherapy ; methods ; Cisplatin ; administration & dosage ; Combined Modality Therapy ; Cryosurgery ; methods ; Deoxycytidine ; administration & dosage ; analogs & derivatives ; Disease-Free Survival ; Female ; Follow-Up Studies ; Humans ; Iodine Radioisotopes ; therapeutic use ; Liver Neoplasms ; secondary ; Male ; Middle Aged ; Neoplasm Staging ; Pancreatic Neoplasms ; pathology ; surgery ; therapy ; Survival Rate ; Young Adult

Adult ; Female ; Femoral Fractures ; diagnostic imaging ; physiopathology ; surgery ; Fibula ; transplantation ; Humans ; Male ; Middle Aged ; Time Factors ; Tomography, X-Ray Computed ; Transplantation, Autologous

Objective To investigate the relationship between expressions of mammalian target of rapamycin (mTOR) and vascular endothelial growth factor (VEGF) and pathological grading of meningiomas. Methods Seventy-six specimens of meningiomas, performed resection in our hospital from January 1995 to August 2010, were chosen, in which, 40 were of WHO grade Ⅰ, 24 of WHO grade Ⅱ, and 12 of WHO grade Ⅲ. The expressions of mTOR and VEGF were immunohistochemically studied with SABC method. Results The protein expressions of mTOR and VEGF mainly located in cytoplasm of meningioma cells, and these proteins were granular materials colored from pale yellow to dark yellow. The expressions of mTOR and VEGF were significantly different among meningiomas of grade Ⅰ,Ⅱ and Ⅲ (P<0.05);the expressions of mTOR and VEGF had a positive correlation (r=0.440, P=0.000). Conclusion The expressions of mTOR and VEGF are positively correlated with the tumor grades.

OBJECTIVETo report the treatment of a case of severe Crouzon's syndrome using monobloc distraction osteogenesis and cranial vault remodeling.

METHODSThrough intra-and extra-cranial approach, monobloc osteotomy was performed and external distractor was placed. Distraction began on the 7th postoperative day at a rate of 1 mm a day, two times a day. The distractor removed after consolidation for 4 months.

RESULTSThe distraction distance attained 20 mm. The exophthalmos and cross bite were corrected completely. The severe obstructive apnea improved markedly.

CONCLUSIONSMonbloc distraction osteogenesis and cranial vault remodeling are effective and safe procedure for Crouzon's syndrome.

Child ; Craniofacial Dysostosis ; surgery ; Female ; Humans ; Osteogenesis, Distraction ; methods ; Osteotomy ; Skull ; surgery

BACKGROUNDCoronary endothelial shear stress (ESS) triggered the development of atherosclerosis. However, the effect of calcium channel antagonist on the distribution of ESS remained unclear.

METHODSTwenty consecutive patients with acute coronary syndrome (ACS) 48 hours after maximal medication with single left anterior descending artery stenosis < 50% were studied. Nicardipine was intravenously injected at 1 µg/kg after a bolus of 10 mg in order to achieve mean blood pressure (MBP) reduced by 10% or more, or the heart rate increased by 10 - 15 beats/min. Hemodynamic variables and angiogram at baseline and during injection of nicardipine were recorded, respectively. Coronary artery 3-D reconstruction was used for the analysis of ESS.

RESULTSDistal reference-vessel-diameter and minimal lumen diameter decreased significantly from (2.42 ± 0.41) mm and (1.47 ± 0.49) mm at baseline to (2.22 ± 0.35) mm and (1.35 ± 0.49) mm at maximal drug-dosage (P = 0.018 and 0.020, respectively). Nicardipine did not change blood velocity. Lowest mean shear stress at segments 2-mm distal to plaque increased significantly from (0.034 ± 0.519) Pa at baseline to (0.603 ± 0.728) Pa (P = 0.013) at peak effect of drug.

CONCLUSIONSNicardipine was associated with the constriction of diseased vessel segment that adapted to the reduction of blood pressure, without dynamic change of blood velocity at each stage of whole cardiac cycle. Increased ESS value at segments distal to plaque reflected the cardioprotection by nicardipine (ChiCTR-TRC-10000964).

Acute Coronary Syndrome ; Aged ; Angina, Unstable ; diagnostic imaging ; drug therapy ; Blood Pressure ; drug effects ; Coronary Angiography ; Coronary Vessels ; drug effects ; Female ; Heart Rate ; drug effects ; Hemodynamics ; drug effects ; Humans ; Male ; Middle Aged ; Nicardipine ; therapeutic use

OBJECTIVEAdhesive or too highly located folds upper eyelid and even blepharoptosis are common complications of double eyelid operation. To correct such deformities.

METHODWe shifted down the double eyelid line, removed adhesion thoroughly, relieved orbital fat and restarted the volume with infraorbicularis oculi fat flap.

RESULTWe had treated 32 case in past two years. The results were satisfying.

CONCLUSIONThe method are acted easy and gained fine result, so behaving to extend application.

Adipose Tissue ; transplantation ; Adult ; Blepharoplasty ; methods ; Eye Abnormalities ; etiology ; surgery ; Eyelids ; abnormalities ; pathology ; Female ; Humans ; Oculomotor Muscles ; surgery ; Postoperative Complications ; surgery ; Tissue Adhesions ; Young Adult