BACKGROUND: The tissue-engineered scaffold, as a substitute of autogenous bone graft, plays an important role in bone repair. In the meanwhile, three-dimensional (3D) printing technology has obtained more attention because of its accurate adjustment.OBJECTIVE: To review the in vitro or in vivo studies on the 3D-printed scaffolds applied in bone repair, thus providing basis for clinical research.METHODS: The first author searched the PubMed database using the English keywords of tissue engineering, bone,three-dimensional printing, scaffold for pertinent articles addressing 3D-printed tissue-engineered scaffolds.RESULTS AND CONCLUSION: There are plenty of studies on 3D-printed tissue-engineered scaffolds, and recent research focuses on the material selection and surface modification. The appropriate porosity is vital, and with the development of manufacturing technology, each property of the scaffold is improved, and composite materials prevail gradually. All above improvements enhance the mechanical property and promote cell adhesion and proliferation.Furthermore, the surface modification promotes the implant-bone interaction. In vivo and in vitro research both indicate that composite materials with the surface coating of bone induction can improve the scaffold performance and osteogenesis.

OBJECTIVETo study the effect of total flavanones of Sedum sarmentosum (SSTF) on the apoptosis of rat hepatic stellate cells (HSC-T6) and its mechanism.

METHODDifferent concentrations of SSTF and HSC-T6 cells were co-cultured for different period of time. The MTT assay was used to detect the inhibitory effect of SSTF on the proliferation of HSC-T6 cells. The flow cytometry Annexin-V/PI double staining method was adopted to detect SSTF's effect on HSC-T6 cell apoptosis. Western blotting and Real-time PCR methods were applied to observe the effect on the protein and mRNA expressions of apoptosis-related cytokines Bcl-2, Bax and Caspase-3.

RESULTSSTF significantly inhibited HSC-T6 cell proliferation and induced cell apoptosis in a dose and time dependent manner. According to Western blotting result, SSTF promoted apoptosis by inhibiting Bcl-2, Bax and promoting the protein expression of Caspase-3; according to a further Real-time PCR study, Bcl-2 mRNA levels can inhibit Bcl-2 and promote Bax and Caspase-3 expressions.

CONCLUSIONSSTF has the effect of promoting the apoptosis of HSC-T6 mainly by inhibiting Bcl-2 and promoting protein and mRNA expressions of Bax and caspase-3.

Animals ; Apoptosis ; drug effects ; Caspase 3 ; genetics ; metabolism ; Cell Line ; Cell Proliferation ; drug effects ; Drugs, Chinese Herbal ; pharmacology ; Flavanones ; pharmacology ; Hepatic Stellate Cells ; cytology ; drug effects ; metabolism ; Proto-Oncogene Proteins c-bcl-2 ; genetics ; metabolism ; Rats ; Sedum ; chemistry

Objective To standardize the operation processes of neonatal instrument,ensure the standards effectiveness and safety of equipment use.Methods A retrospective study had been taken on after the developments and implementations of all neonatal instruments standard operation procedure (SOP).The equipment maintenance data were collected and analyzed one year before and after the implementation of SOP.Results After the effective implementation of the SOP,the incidence of instrument repair due to misoperation,improper maintenance reduad by 59％(19/32),9/14,4/7,the instrument management efficiency was enhanced,and the safety of nurses and patients was guaranteed,and the patients satisfaction was improved,and also the quality of care was enhanced.Conclusions SOP procedure plays a very important role in improving neonatal care management and overall efficiency.It makes a continuous improvement of nursing care which is worth widely being implemented.

Objective To design and formulate a electronic preoperative preparation checklist for applying in the preoperative preparation,to reduce missing rate in preoperative preparation and transfer,to improve patient satisfaction,to avoid operation delay and medical accident caused by inappropriate preparation.Methods A total of 145 patients with surgery from March 2013 to February 2013 were as experimental group,and 158 patients with surgery from March 2012 to February 2012 were as control group.The experimental group was used electronic preoperative preparation checklist for preoperative preparation and transition,and the control group was used conventional methods.The incidence of mistake for preoperative preparation and transfer and both surgeon's and patient's satisfactory were compared between two groups.Results After applying the electronic preoperative preparation checklist,the incidence of mistake for preoperative preparation and transfer in experimental group reduced significandy to 1.37％(2/145) and 4.83％ (7/145),compared with the incidence of control group 6.33％(10/158),11.39％(18/158),and the differences between two groups were statistically different (x2=4.870,4.305,P ＜ 0.05).Both surgeon's and patient's satisfactory were improved dramatically,the satisfactory in experimental group improved to 100.00％(50/50)and 97.93％(142/145),compared with the satisfactory of control group 90.00％(45/50) and 90.51％(143/158),and the differences between two groups were statistically different(x2=5.263,7.459,P ＜ 0.05).Conclusions Implementing the electronic preoperative preparation checklist can reduce the incidence of mistake before operation and ensure patient operation schedule.Therefore,it could improve nursing care quality and efficiency.

Objective To study the effects of different oxytocin doses on neonatal pathologic jaundice.Methods A total of 386 newborn infants with normal term of labor were selected from the full-term pregnant women who were admitted to Jiaxing Maternal and Child Health Care Hospital from August 2014 to September 2015 were divided into low dose group (2.5 ~5.0U,n=96), middle dose group (5.0 ~7.5U,n=96), high dose group (7.5~10.0U,n=96) and control group (n=98) according to the different dosage of oxytocin.Total labor time, neonatal gender, neonatal weight and maternal age, as well as the day of birth within seven days of skin side of the bile values were recorded.The probability of each group of neonatal patients with pathological jaundice and the relationship with oxytocin doses were studied.Results The incidence of neonatal pathologic jaundice was 3.23%in the low dose group, 6.67%in the middle dose group, 29.73%in the high dose group and 3.16%in the control group.The differences among low dose group, middle dose group and control group were not significan.Compared with high dose group, the incidence of neonatal pathologic jaundice in low dose group, middle dose group, and the control group were all lower(P<0.05).Conclusion Oxytocin less than 7.5U in labor has no significant effect on neonatal pathologic jaundice, >7.5U can promote pathologic jaundice.

WRKY transcription factors are novel transcriptional regulatory factors, which play an important role in regulating plant development, metabolism and other physiological processes. In this study, a new Dendrobium officinale WRKY transcription factor, designated as DoWRKY1 was cloned by using RT-PCR and RACE (GenBank Accession No. KF953910). Bioinformatic analysis demonstrated that, the full-length cDNA of DoWRKY1 was 1,704 bp. And DoWRKY1 contained a 1,629 bp open reading frame (ORF) that encoding a peptide of 542 amino acid residues. The putative DoWRKY1 protein contained two conserved WRKY domains and it belonged to the group I WRKY family protein. Yeast one-hybrid experiment showed that DoWRKY1 had transcriptional activation ability in yeast, and it could activate the expression of downstream report genes (His3 and Ade2). Semi-quantitative RT-PCR experiment showed that DoWRKY1 expressed in roots, stems, leaves and protocorm-like bodies. Real-time qRT-PCR proved that DoWRKY1 could be induced by methyl jasmonate (MeJA) and chitosan (Chitosan), and the expression level of this gene can reach the expression peak at 2 h and 1 h, respectively. These results are useful for further determination of the regulation function of this gene in secondary metabolism of D. officinale.
Cloning, Molecular ; Dendrobium ; genetics ; Gene Expression Regulation, Plant ; Plant Proteins ; genetics ; Transcription Factors ; genetics

Objective To investigate the expression difference of vascular endothelial growth factor (VEGF)between lung cancer and lung benign disease,and its relation to clinical characteristics and prognosis of non-small cell lung cancer(NSCLC),and to research the possible role of VEGF in the growth of lung can- cer.Methods The expression of VEGF and microvascular density(MVD)were detected in 60 lung cancer tissues and 30 lung benign disease tissues after operation by immunohistochemical method and put up statisti- cal analysis.Results The positive rate of VEGF expression(63%)and MVD(45.13?10.27)in lung cancer tissues were both higher than those in lung benign disease tissues(27%,33?6.49)(P

OBJECTIVETo discuss the effect of surgical staging and using craft bone with vancomycin for the treatment of calcaneal fractures.

METHODSFrom January 2006 to December 2012,13 patients with open calcaneal fractures were treated including 9 males and 4 females with an average of 35.2 years old ranging from 23 to 66. All cases were emergency cases. According to Sanders classification of calcaneal fractures, 2 cases were type II, 7 cases were type III, 4 cases were type IV. According to Gustilo-Anderson soft tissue injury classification, 8 cases were type II, 2 cases were type III A, 2 cases were type III B, 1 case were type III C. Firstly a thorough debridement or VSD procedures were applied,secondly calcaneal fracture were treated with open reduction, plate fixation and bone graft complex with antibiotics. Based on clinical examination, radiographic evaluation, and American Foot and Ankle Surgery Society (AOFAS), ankle function were evaluated after operation.

RESULTSOpen wounds were headed after dressing and repairing,, lateral calcaneal wound were healed during the first period. All patients were followed up for 6 to 36 months (means 14.5 months). Fracture healing time was 14 to 20 weeks (means 16.2 weeks). Last follow-up AOFAS ankle-hindfoot score was (80.0 +/- 7.4) ranging from 55 to 95.

CONCLUSIONFor patients with open fractures, through reasonable clinical evaluation, staging operation, using bone graft with antibiotics can reduce the incidence of postoperative wound infection and promote fracture healing.

Adult ; Aged ; Anti-Bacterial Agents ; administration & dosage ; Bone Transplantation ; methods ; Calcaneus ; injuries ; surgery ; Female ; Fracture Fixation, Internal ; Fracture Healing ; Fractures, Open ; surgery ; Humans ; Male ; Middle Aged

Adolescent ; Adult ; Blood Transfusion ; Child ; Child, Preschool ; Female ; Humans ; Male ; Middle Aged ; Pesticides ; poisoning ; Poisoning ; therapy ; Treatment Outcome

OBJECTIVETo investigate the therapeutic effects of modified Sanjiasan decoction (MSD) on vascular dementia (VD).

METHODSThirty-seven patients in the treated group were given MSD, one dosage each day, and 31 patients in the control group were administered orally Naofukang 0.8 g three times a day. The treatment course for both groups was three months. The indices as Hasegawa dementia scale (HDS), mini mental state examination (MMSE) and its subentries, intelligence quotient (IQ) and memory quotient (MQ) were examined.

RESULTSMSD could improve the scores of HDS, MMSE and its subentries (P<0.05 or P<0.01), ameliorate dementia state and enhance IQ (P<0.05) and MQ (P<0.01) in patients with VD.

CONCLUSIONMSD has a certain effect on intelligence benefiting and dementia antagonizing.

Aged ; Dementia, Vascular ; drug therapy ; Female ; Humans ; Intelligence ; drug effects ; Intelligence Tests ; Male ; Materia Medica ; therapeutic use ; Middle Aged ; Nootropic Agents ; therapeutic use ; Phytotherapy