Small RNA (miRNA) can regulate post-transcriptional level of mRNA. miRNA is closely related to the occurrence and development of a variety of human diseases such as gastric cancer, lung cancer, breast cancer, ovarian cancer, prostate cancer, pancreatic cancer, liver cancer, etc. Many kinds of miRNAs in human cancers are significantly abnomadly expressed. miRNA can be regarded as a marker for many human cancers diagnosis.

Child, Preschool ; Humans ; Infant ; Infant, Newborn ; Lung ; physiopathology ; virology ; Male ; Metapneumovirus ; isolation & purification ; Paramyxoviridae Infections ; diagnosis ; physiopathology ; Respiratory Function Tests ; Respiratory Syncytial Virus Infections ; diagnosis ; physiopathology ; Respiratory Syncytial Viruses ; isolation & purification

Fibroma, Desmoplastic ; pathology ; Humans ; Male ; Middle Aged ; Nose Neoplasms ; pathology

Objective To study the expression of NKx2.5 on the heart of offspring during the development of embryo,whose mother is deficient of folic acid.Methods 1.Control group involving 18 rats and study group involving 18 rats were chosen from the total 36 adult female SD rats randomly copulate with the male normal rats after feeding different fodder for 2 weeks.The heart of the 13.5 days,17.5 days embryos and the newborns were obtained;2.the expression of NKx2.5mRNA by RT-PCR was observed;3.the expression of NKx2.5 protein by Western-blotting was investigated.Results 1.The expression of NKx2.5 mRNA of study group was weaker than control group in heart of the 13.5 days,17.5 days embryos and the newborns(P

Objective To investigate etiology of acute pneumonia in children in order to provid basis for clinical diagnosis and treatment.Methods The children with acute pneumonia who were hospitalized in children's hospital affiliated to Suzhou university were selected.And the sputum of them were collected.Bacteria and virus were tested using sputum culture and direct immunofluoresence respectively.Antibodies against mycoplasma and chlamydia were detected by enzymelinked immunosorbent assay(ELISA) in paired sera. Results Microbial etiology was obtained in 360 cases (67.7%) of 532 patients.Viral infections were in 178 cases (33.5%).Bacterial infections were in 23 cases (4.3%),mycoplasma pneumoniae 50 cases (9.4%) and chlamydia pneumoniae 19 cases (3.6%),compound infections 90 cases (16.9%).Respiratory syncycial virus was the major viral pathogen,streptococcus pneumoniae were the prominent pathagens of bacterial pneumonia,followed by haemophilus influenza.Conclusions Viral infection is the most common cause of acute pneumonia in children in Suzhou area during winter and spring,followed by mycoplasma pneumoniae,bacteria and chlamydia pneumoniae.Mycoplasma pneumoniae infection is more common in children older than 3 years,chlamydia pneumoniae infection is more in infants less than 3 months,most of compound infection children were below the age of 3 years.

OBJECTIVETo investigate the changes of upper airway of obstructive sleep apnea syndrome (OSAS) patients after the treatment of Silensor snoreguard.

METHODS42 patients with OSAS were treated with dental appliance. Cephalometric analysis was carried out to compare the changes of upper airway before and after the treatment.

RESULTSSPP-SPPW increased from (9.10 +/- 2.25) mm to (12.24 +/- 2.61) mm. PAS increased from (8.99 +/- 3.20) mm to (11.24 +/- 3.79) mm. CL decreased from (26.26 +/- 6.04) mm to (14.37 +/- 8.14) mm. H-MP decreased from (21.27 +/- 6.12) mm to (12.14 +/- 5.89) mm. V -RGn decreased from (55.15 +/- 5.61) mm to (51.63 +/- 5.87) mm. OPAA increased from (7.01 +/- 1.54) mm2 to (7.85 +/- 1.61) mm2. HPAA increased from (3.02 +/- 0.89) mm2 to (3.61 +/- 1.61)mm2.

CONCLUSIONDental appliance worked with the effect of enlarging upper airway.

Cephalometry ; Female ; Humans ; Male ; Middle Aged ; Sleep Apnea, Obstructive

BACKGROUNDHuman cytomegalovirus (HCMV) infection is an important infectious agent that results in neonatal disease and congenital deformity. HCMV infection may affect in many organs. The different symptoms and tissue tropism of HCMV infection perhaps resulted from the genetic polymorphism of HCMV. HCMV UL144 open reading frames encode a homologue of the tumor necrosis factor receptor. It seems important to study the strain-specific variability of UL144 sequence in low-passage clinical isolates and to discuss if the variability related to the clinical HCMV infection.

METHODSHCMV-UL144 gene was amplified by PCR assay in 65 low-passage clinical isolates and urine from 7 healthy children who were HCMV-DNA positive by quantitative PCR. All the positive PCR products were analyzed by Heteroduplex mobility assay and single-stranded conformation polymorphism (HMA-SSCP) and 32 of them were sequenced.

RESULTSFifty-five isolates and 5 urine specimens were HCMV-UL144 positive by PCR. Sequencing and HMA-SSCP analysis showed that significant strain-specific variability was present in the UL144 ORFs. Comparing UL144 sequences and the corresponding symptoms showed that genotype 2 did not exist in megacolon isolates. And genotype 1 and 3 were the major types among microcephaly and jaundice isolates respectively.

CONCLUSIONHCMV-UL144 existed in almost all the low passage isolates. HMA-SSCP assay is an easy and effective method to detect the genetype of HCMV-UL144 sequence. The characteristic of sequences in different isolates showed that UL144 gene may play an important role in HCMV infection.

Cytomegalovirus ; classification ; genetics ; isolation & purification ; Cytomegalovirus Infections ; virology ; Genotype ; Humans ; Infant ; Infant, Newborn ; Membrane Glycoproteins ; genetics ; Molecular Sequence Data ; Phylogeny ; Polymerase Chain Reaction ; Polymorphism, Single-Stranded Conformational ; Sequence Analysis, DNA ; Viral Proteins ; genetics

Background Erythropoietin (EPO) has a protective effect on retinal neurons in many retinal diseases,but regarding the effect of EPO on apoptosis of retinal photoreceptor cells in retinal detachment (RD) is uncompletely clear.Objective This study was to investigate the protective effect of endogenous EPO on photoreceptors in a rat model of RD and explore its possible mechanism.Methods Seventy-two Sprague- Dawley (SD) rats were randomly assigned to control group,RD group,RD+PBS group,RD+erythropoietin soluble receptor (EPOsR) 2, 20, 200ng groups with 12 rats for each group.1.4% hyaluronic acid was slowly injected into the subretinal space to induce RD in rats,and PBS or 2,20 or 200ng EPOsR was then injected into the vitreous space.On day 3 after RD,apoptotic photoreceptors were detected using transferase-mediated dUTP nickend labeling (TUNEL),and caspase-3 activity was assessed by Western-blot and immunofluorescence staining.On day 14 after RD,retinal histopathologic examination was carried out and outer nuclear layer (ONL) thickness was measured under the light microscope.The use of animals complied with the Statement of Association for Research in Vision and Ophthalmology. Results Apoptotic photoreceptors were seen in ONL of rats of the RD group.Apoptotic photoreceptors were gradually increased with the elevation of EPOsR dose in the vitreous cavity.Western blot and immunofluorescence consistently showed that the gray scale of caspase-3 activity was 0.15±0.04,0.49±0.03,0.50±0.07,0.63±0.03,0.69±0.04 and 0.83±0.04 in the normal group,RD group,RD +PBS group,RD+EPOsR 2,20,200ng groups respectively with statistically significant differences (F=76.016;P=0.000),and caspase-3 activity was considerably stronger in the RD+EPOsR 200ng group than the other groups (P＜0.01).On day 14 after RD,the ONL thicknesses in the normal control group,RD group,RD+PBS group,RD+EPOsR 2,20,200ng groups were (47.39±3.39)μm,(33.96±3.54)μm,(31.83±5.21)μm,(31.40±2.63)μm,(24.99±2.06)μm and (19.30±3.71)μm,showing significant differences among these groups (F=44.733,P=0.000).ONL thicknesses the groups treated with different doses of EPOsR were markedly thinner than that of the RD group and RD +PBS group (P＜0.01).Conclusion EPOsR induces apoptosis of retinal cells and enhances the activity of caspase-3 in a dose-dependent manner.Endogenous EPO can protect photoreceptors against anoxia-mediated damage in RD eyes through decreasing caspase-3 activity and inhibiting apoptosis.

The phytoestrogen genistein has been shown to relax agonist-preconstricted arteries in vitro, the mechanism of this relaxation remains incompletely understood. The present study aimed to investigate the effect of phytoestrogen genistein on the tension of rabbit femoral arteries in vitro and to determine the mechanism of such relaxation. The results are as follows: (1) genistein (10~40 micromol/L) relaxed femoral arterial rings in a concentration-dependent manner under the condition of precontraction induced by phenylephrine (PE, 1 micromol/L); (2) removal of the endothelium significantly inhibited genistein-induced relaxation; (3) pretreatment with NOS inhibitor N(G)-nitro-L-arginine methyl ester (L-NAME, 100 micromol/L) also significantly inhibited this relaxation by genistein, implying that the concentration-dependent vasorelaxation caused by genistein is endothelium-dependent and involved nitric oxide; and (4) pretreatment with an L-type calcium channel agonist, Bay K 8644 (0.5 micromol/L), also significantly inhibited the genistein-induced relaxation in both endothelium-intact and endothelium-denuded rings. The results suggest that the genistein-induced vascular relaxation of these rabbit arteries is partially endothelium-dependent and involves calcium antagonistic mechanism.
Animals ; Calcium Channels, L-Type ; drug effects ; metabolism ; Endothelium, Vascular ; drug effects ; metabolism ; Femoral Artery ; drug effects ; physiology ; Genistein ; pharmacology ; In Vitro Techniques ; Male ; Nitric Oxide ; metabolism ; Rabbits ; Vasodilation ; drug effects

OBJECTIVETo investigate new bone formation of alveolar augmentation with recombinant human bone morphogenetic protein-7 (rhBMP-7) expressed in prokaryocyte.

METHODSTo create the model of rabbit extraction socket into which the composites of rhBMP-7 and the gelatin sponge was immediately implanted, then the samples were investigated 2, 4, 8 and 12 weeks postoperatively by gross observation, scanning electron microscope (SEM), quantitative measurement of calcium content and alkaline phosphatase (ALP) activity.

RESULTSThere was significant difference in height of alveolar ridge absorpted between the experimental groups and the carrier control groups through gross observation. The result of SEM showed that bone healing in rhBMP-7 groups was 4-6 weeks earlier than that of control groups. ALP activity in rhBMP-7 groups were obviously high compared with that of control groups.

CONCLUSIONThe BMP-7 has a satisfactory osteoinduction ability to promote new bone formation and prevent alveolar bone absorption.

Alveolar Process ; Alveolar Ridge Augmentation ; Animals ; Bone Morphogenetic Protein 2 ; Bone Morphogenetic Proteins ; Drug Carriers ; Humans ; Osteogenesis ; Rabbits ; Recombinant Proteins ; Transforming Growth Factor beta