Child ; Drug-Related Side Effects and Adverse Reactions ; etiology ; Humans ; Male ; Neostigmine ; poisoning

Objective To investigate the clinical and pathologic features in patients of microscopic polyangiitis (MPA) with peripheral nerve abnormality.Methods We collected clinical data of 6 patients with MPA that was confirmed by immunological,pathological and clinical findings.Electroneurophysiologic examinations and sural nerve biopsies were performed in these patients.Two normal controls were included in these studies.Results All of 6 patients developed asymmetric polyneuropathies.Electrodiagnostic studies showed reduced amplitudes of the sensory nerve action potential and compound motor action potential with mild impaired conductive velocities.The patients presented vasculitis changes with cell infiltration by monocytes and lymphocytes.Sural nerve biopsies found loss of myelinated fibers in all of the patients indicating axonal degeneration.Some of them associated with regeneration clusters of myelinated fibers.Conclusions Asymmetric neuropathy with sensory nerve injuries is the mainfeature in the MPA associated polyneuropathy.Electrodiagnostic examination indicated axonal lesions in mononeuritis multiplex.Sural nerve biopsies confirmed the active axonal lesions and vasculitis.

AIM: To observe the effect of microRNA-16 (miR-16) on the megakaryocytic differentiation of K562 cells, and to explore the potential mechanism.METHODS:miR-16 was over-expressed or silenced by transfection with miR-16 mimics or inhibitor in K562 cells.The level of miR-16 was detected by real-time PCR.The expression of CD41, CD42b and CD61, as megakaryocytic differentiation markers, was detected by flow cytometry.The effect of miR-16 on the expression of myeloblastosis oncogene ( MYB) was measured by Western blotting, and flow cytometry was performed to confirm whether the effect of miR-16 on expression of CD41, CD42b and CD61 was mediated by MYB.RESULTS:Transfection with miR-16 mimics dramatically elevated the level of miR-16 and the expression of CD41, CD42b and CD61 in the K562 cells.Transfection with miR-16 inhibitor decreased the level of miR-16 and the expression of CD41, CD42b and CD61 in the K562 cells (P<0.05).The expression of MYB was regulated by miR-16, and MYB silencing reversed the regulation of CD41, CD42b and CD61 induced by miR-16.CONCLUSION:miR-16 regulates the megakaryocytic dif-ferentiation of K562 cells by targeting MYB.

Angiogenesis Inhibitors ; therapeutic use ; Antineoplastic Combined Chemotherapy Protocols ; therapeutic use ; Carcinoma, Hepatocellular ; blood supply ; metabolism ; pathology ; therapy ; Chemoembolization, Therapeutic ; methods ; Endostatins ; therapeutic use ; Humans ; Liver Neoplasms ; blood supply ; metabolism ; pathology ; therapy ; Microvessels ; pathology ; Neovascularization, Pathologic ; pathology ; Vascular Endothelial Growth Factors ; metabolism

Abstract?AIM: To analyze the clinical effects of partial rectus muscle transportation procedure for paralytic strabismus due to single rectus muscle paralysis.?METHODS:The conditions of 22 patients (25 eyes) who underwent partial rectus muscle transportation procedure for paralytic strabismus due to single rectus muscle paralysis were retrospectively reviewed. The following data were analyzed:1 ) the angle of deviation of primary position; 2 ) the presence of diploma in the primary position;3) the presence of compensatory head posture;4) the motility of the affected eye.All of the patients attended 6mo postoperative follow-up examinations.?RESULTS: According to the results of examinations before and during operation, different operations were performed:2 eyes were treated with partial rectus muscle transportation, 20 eyes were treated with recession of antagonistic muscle of paralytic rectus muscle combined with partial rectus muscle transportation, 3 eyes were treated with recession of antagonistic muscle, partial rectus muscle transportation and recession of yoke muscle.Twenty patients were orthotropia in the primary position, the diploma and abnormal head posture were eliminated. Two patients with binocular lateral rectus muscles paralysis were in mild undercorrection which were resolved by wearing 8△and 10△prisms respectively. The procedure improved strabismus of 25 eyes from 100.23△ ± 42.61△ preoperatively to 0.82△ ± 2.67△postoperatively ( t=10.797,P<0.001).Ocular movement was improved from -4.52 ±0.51 preoperatively to -2.68 ± 0.63 postoperatively (t=-19.468, P<0.001).? CONCLUSION: Partial rectus muscle transportation procedure for paralytic strabismus due to single rectus muscle paralysis can effectively correct the primary position in paralytic strabismus, eliminate the presence of diploma in primary position and abnormal head posture, and improve the ocular motility, which provides content clinical effects.

Different teaching methods were chosen based on different teaching contents in pharmacological theory teaching.Then teaching contents seem simple,interesting and acceptable.The students were more interested in the subject.The results of investiga- tion showed that teaching quality had improved through using this technology.

Background The select of supporter is critical for the construction of tissue engineering cornea.Many carrier carl be utilized in the construction of tissue engineering cornea,but de-cellular corneal matrix is known to be one of optimal supporters.Objective Present study was to investigate the characteristics of de-cellular corneal matrix of porcine of structure and biocompatibility for rabbit cornea stroma and limbal epithelial ceHs. Methods The porcine cornea was prepared as de-cellular corneal matrix of porcine by the application of detergent enzyme combined process.The corneal epithelial cells,keratocyte and endothelial cells of porcine were removed completely and stored in -20℃ refrigerator after sterilization.The morphology of de-cellular corneal matrix of porcine was examined by hematoxylin-eosin staining under the light microscope.The structure characteristics of de.cellular corneal matrix of porcine under the scan electron microscope,and its physics features were investigated by the evaluation of water content,strength,expansion and transparency.The de-cellular corneal matrix of porcine were implanted to cornea stroma of rabbit and co-cultured with rabbit corneal epithelial cells for 4 weeks in vitro to assess the keracyte compatibility. Results The epithelial cells,keratocyte and endothelial cells of porcine were removed completely by trypsogen digestion.The collagen fibril network and collagen plates paralleled to corneal surface under the light microscope.The water content,strength,expansion。Ratio of light transparency of de-cellular corneal matrix of porcine were similar to normal porcine cornea.After implantation of de.cellular comeal matrix of porcine into rabbits corneal stroma,the edema of tissue was found in one week,and edema disappeared on two weeks and became clear on four weeks after surgery.The de-cellular eorneal matrix attached to rabbit cornea stroma well.No inflammatory eell and new vessel were found after surgery.The co-cultured rabbit corneal epithelial cells differentiated and proliferated on the surfaee of de-cellular corneal matrix and showed positive response for CK3.No statistically significant differences were found in the water content,strength,expansion of de-cellular cornea matrix of porcine among the normal,before dehydration,2 and 4 hours after dehydration cornea matrix(P＞0.05).However,the transparency was much better in the corneal matrix with 2-hour,4-hour dehydration in comparison with non-dehydration one(P＜0.05). Conclusion The structure features of de-cellular cornea matrix of porcine are similar to normal porcine cornea.Good biocompatibility is proved for xenogenesis of rabbit cornea.

Objective To elucidate the association of the susceptibility for rheumatoid arthritis ( RA )and peptidylarginine deiminase 4(PADI4) genetic single nucleotide polymorphism (SNP) in Han population in Hebei province.Methods This hospital-based ease-control study included 105 untreated RA patients and 96 healthy controls.The genotypes and allele frequencies of padi4_92 gene polymorphisms were analyzed by PCR-RFLP method,and the analysis of linkage disequilibrium and haplotype construction were performed for padi4_92,padi4_94 and padi4_104 SNPs.The Peason Chi-square test and Woolf statistic method were used to analyze the odds ration (OR) and 95％ confidence interval (95％CI).Results Significant differences in the frequency of PADI4 alleles and genotypes between the cases and controls were observed.The combined effect of padi4_92,padi4_94 and padi4_104 SNPs was analyzed by SHEsis snd Genehunter software,and got three haplotypes,CCC,GTT and GCC.There was significant difference in haplotypes distribution of 3 SNPs of padi4 between the two groups.This analysis of haplotypes revealed that haplotype of PADI4 was a risk factor for RA The ORs for these three haplotypes for RA susceptibility were 0.634 (95％CI=0.425-0.946),1.306 (95％CI=0.864-1.975),4.286 (95％CI=1.274-14.424),respectively.Conclnsion The SNPs of PADI4 may contribute to genetic susceptibility to RA in Han population in Hebei Province.

Objective To report the clinical and myopathological features in a patient with common variable immunodeficiency (CVID) with myositis.Methods A 33 years old man suffered from recurrent respiratory infection with fever over 10 years.The symptoms improved after anti-infection therapy.At the same time he presented with fatigue.Two years ago he developed general muscle weakness,hypertrophy and myotonia,especially in the hands,neck and thighs.Genetic test for myotonic dystrophy protein kinase (DMPK) and zinc finger protein 9 (ZNF9) was performed.Laboratory tests,electromyography,muscle ultrasound and muscle biopsy were performed.In addition to standard histological and enzyme histochemical stainings,immunohistochemical method was used with primary antibodies of mouse anti human monoclonal antibodies including CD8 for T-lymphocytes,CD20 for B-lymphocytes,CD68 for macrophages and MHC-Ⅰ for muscle membrane.Results Electromyography revealed myogenic changes and abound with myotonic potentials.There was muscle hypertrophy in muscle ultrasound.Lung biopsy showed chronic inflammatory changes.Serum hypoimmunoglobulin and anemia were found.Muscle biopsy showed muscle fiber necrosis and regeneration with lymphocyte and macrophage infiltration.There were no gene mutations in DMPK and ZNF9 gene.Conclusion Muscle hypertrophy and myotonia appeared in CVID with myositis.

Objective To assess the effects of fenofibrate on myocardial remodeling in obese rats by echocardiography.Methods Twenty-six SD rats were fed with high fat chow to establish twenty obese rats models,which were randomly divided into two groups:obesity group (OB group,n =10) and fenofibrate group(F group,n =10).The same week-old SD rats group (n =10) was also randomly selected as normal control group.F group was given fenofibrate 60 mg · kg-1 · d-1 for 8 weeks,the other groups were given normal saline.Echocardiographic scan was performed in each group at the beginning and ending of the experiment.Twenty-four weeks later,all rats were executed and the cardiac muscle was used to histological inspect.Results After the experiment,compared with the control group,the body weight,the ventricular thickness,interventricular septal thickness and the left ventricular mass in OB group were significantly increased than those of control group(P ＜0.01),the E/A ratio was significantly decreased(P ＜0.01).Histological detection showed that myocardial structure was disordered,and that interstitial collagen was deposited in the myocardium.Compared with OB group,the parameters all above in F group were significantly improved (P ＜0.01).Left ventricular mass from echocardiography correlated well with the results from pathologic specimen (r =0.98,P ＜0.01).Conclusions Fenofibrate has beneficial effects on preventing myocardial remodeling.By general echocardiography,the effects can be assessed comprehensively and accurately.