BACKGROUND:Self-assembling peptide scaffolds have attracted much more attention among three dimensional biomaterials due to its biocompatibility, biodegradation, and tailor-made properties.
OBJECTIVE:To review the structure and design of functionalized self-assembling RADA peptide, and the recent advances in the use of RADA self-assembling peptide for three-dimensional cel culture in cel therapy applications.
METHODS:Total 224 literatures related to self-assembling peptide and tissue engineering from PubMed, Web of Science and CNKI databases were screened out for this review. The keywords were“self-assembly peptide, tissue engineering”in English and Chinese, respectively. Final y 48 of 224 articles about the design, fictionalization, and three-dimensional cel culture of peptide scaffolds were included in this review.
RESULTS AND CONCLUSION:Self-assembling peptide could undergo spontaneous assembly into wel-ordered interwoven nanofibers in water and rapidly form hydrogel, which physical y mimics the architecture of natural extracel ular matrix to ensure a real three-dimensional microenvironment for cel s. In terms of bio-function, this material can be tailor-made with various bioactive short peptide motifs to promote cel adhesion, proliferation, and differentiation.

The recent research of opioid receptors has achieved great progress, especially in the field of the protection of cardiac muscles in ischemic preconditioning, which makes people pay more attention to the relation ship between opioid receptors and cardiovascular system. This article summarizes the studies of opioid receptors, the measures they take to modulate cardiovascular system and the way they participate in ischemic proconditioning both at home and abroad.

Objective: To explore the role of clinical pharmacists in the treatment of artial fibrillation complicated with digoxin poisoning and the entry points of pharmaceutical care.Methods: Clinical pharmacists participated in the therapy for a patient with atrial fibrillation and digoxin poisoning, monitored the blood concentration of digoxin combined with the characteristics of the patient, analyzed the causes of digoxin poisoning in terms of the underlying diseases, renal function and combined medication, and performed beneficial pharmaceutical care.Results: The suggestions of clinical pharmacists were adopted by doctors, digoxin was withdrawn timely and the drug poisoning was corrected.

ObjectiveTo investigate the relationship between the polymorphisms of the promoter of a disintegrin and metalloproteinase 10(ADAM10) gene and sporadic Alzheimer's disease (SAD).Methods The promoter of ADAM10 gene in 10 controls and 10 SAD patients was sequenced.Three variations were found,then these variations in 298 SAD patients (SAD group) and 315 healthy controls (control group)were genotyped by using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP).ResultsThree polymorphisms were found in the promoter of ADAM10 gene: -279G/A (rs653765),- 630G/T( rs514049 ) and - 921GAGA/- ( rs33926666 ).For - 921GAGA/-,there were significant differences in genotype ( GAGA/GAGA:138 (46.3％ ),GAGA/-:155(52.0％),-/-:5(1.7％))and allele frequencies (GAGA:431 (73.6％),-:165 (27.7％) ) between SAD and control (genotype:x2 =34.130,P =0.000; allele:x2 =25.972,P =0.000). For - 279G/A,there were significant differences in genotype and allele frequencies between SAD and control in the subjects without ApoEε4 allele (genotype:x2 =8.734,P=0.013; allele:x2 =5.129,P=0.024). -279G and -921GAGA were relatively protective allele types for SAD,and they were not in linkage disequilibrium.ConclusionThe polymorphisms - 279G/A and - 921GAGA/- of ADAM10 are associated with SAD.Allele G or genotype G/G of -279G/A and the GAGA/GAGA genotype or the GAGA allele of -921GAGA/- might have a protective effect on SAD.

ObjectiveTo investigate the effect of mescenchymal stem cell (MSC) transplantation on Tourette syndrome(TS)model rats.MethodsStereotypies can be successfully induced in rats by intrastriatal microinfusion of TS sera.MSC suspension was bilaterally injected into the striatum.Survival and differentiation of transplanted MSC were tested through immunohistochemical analyses.ResultsFlow cytometry results demonstrated that the cells strongly expressed CD29(95.2％ ),CD105(97.2％ ),CD44(96.3％ ) and CD106 (94.1％).TS rats with MSC grafts exhibited significantly decreased stereotypic behaviors at 10 and 14 days(95.5 ±6.6,73.1 ± 6.5 vs.114.1 ± 6.0,108.0 ± 6.4).Immunohistochemistry analyses revealed survival of transplanted MSC and differentiation into neurons and astrocytes in the rat brain.ConclusionIntrastriatal transplantation of human MSC can provide therapeutic potential for TS.

A questionnaire survey on the awareness and knowledge about stroke was conducted in 392 residents of Fangzhuang community.The results showed residents in Fangzhuang had high awareness rate about stroke,the rates of knowing early symptoms of stroke were from 57.91％ to 79.08％.83.16％ (326) of residents knew to dial 120 or 999 at emergency.The community doctors were thought as the main resource of gaining the knowledge of stroke (78.32％ ).The results indicate that Fangzhuang community health service center plays an important role in health education and guidance for emergent management of stroke in the community.

Objective To investigate the efficacy and influence factors of hysteroscopic guiding endometrial resection on dysfunctional uterine bleeding.Methods One hundred and eighty women with dysfunctional uterine bleeding were selected as our subjects in Maternal and Child Health Hospital of Qinhuangdao from Jan.2009 to Jan.2011.One hundred and fifty which meet with operation indications underwent hysteroscopic guiding endometrial resection.Operation periods,blood loss,adverse effects rate were recorded.Serum follicle stimulating hormone (FSH),luteinizing hormone (LH),estradiol (E2) and progesterone (P) hormone levels were detected at preoperative and postoperative.The efficacy was recorded at 6 and 12 months after the procedure.Results The average operation time and amount of bleeding were (31.2 ± 11.0)min and (32.3 ± 10.5) ml,and no blood transfusion performed during the operation.All cases got the succeed operation.There were no significant difference in terms of serum FSH,LH,E2 and P concentrations before and after treatment(P ＞0.05).At 6 months after treatment,improvement rate was 64.0％ (96/150),and effective rate was 32.0％ (48/150).The total effective rate was 96.0％ (144/150).At 12 months after treatment,the improvement rate was 58.0％ (87/150),effective rate was 36.0％ (54/150).The total effective rate was 94.0％(141/150).There was significant different in terms of total effective rate between 6 months and 12 months after treatment(x2 =113.6,P ＞ 0.05).Postoperative complications occurred in 2 cases,including 1 cases of abdominal pain,and 1 cases of dysmenorrhea.Uterine cavity depth,age and disease duration were the main factors affect the clinical efficacy.(OR(95 ％ CI):-1.14 (-1.17 to-1.07),1.60 (1.31 to 2.08),-1.02(-1.14 to-1.08),P ＜ 0.05).Conclusion Treatment of hysteroscopic guiding endometrial resection on dysfunctional uterine bleeding is proved to be efficacy due to the less adverse reaction.

Objective To explore perinatal risk factors associated with the neurobehavioral development of small for gestational age (SGA) full-term neonates.Methods This prospective cross-sectional study included 111 full-term newborn infants from Apr 2008 to Apr 2010 born in Yan-tai Yuhuangding Hospital.Detailed clinical data in perinatal period of all subjects were recorded.Infants aged 3 ～ 7 days were assessed with neonatal behavioral neurological assessment (NBNA) for neurobehavioral development.Logistic regression analysis was used to explore risk factors associated with the score of NBNA.Results Significant differences (P ＜ 0.05) were found between full-term SGA (10.72 ± 1.41,7.13 ± 0.96,7.32 ± 0.74,37.16 ±1.32) and normal neonates (11.27 ± 1.04,7.89 ± 0.72,7.62 ± 0.64,39.12 ± 0.76) in terms of capacity,active and passive muscle tension and NBNA score.Full-term SGA neonates had lower score than control.Univariate logistic regression showed that delivery,placenta abnormalities,umbilical cord abnormalities,infection in perinatal period,gestational hypertension,twin pregnancy,hyperbilirubinemia affected neurobehavioral development of full-term SGA infants.Multivariate logistic regression showed that mothers' infection in perinatal period (OR =2.175,95 ％ CI 1.981 ～ 2.408,P ＜ 0.05),twin pregnancy (OR =1.936,95％ CI 1.517 ～2.368,P ＜ 0.05) and hyperbilirubinemia (OR =1.518,95％ CI 1.072-2.149,P ＜ 0.05) were risk factors for neurobehavioral delay of full-term SGA infants.Conclusion Full-term SGA neonates showed poorer quality in neurobehavior.Risk factors associated with neurobehavior of full-term SGA infants included mothers' infection in perinatal period,twin pregnancy and hyperbilirubinemia.

Objective: To study the inhibitive effect of soybean isoflavone on bone loss induced by the decrease of estrogen level in ovariectomized rats. Methods: Ovariectomized Wistar rats (n=48) were divided into six groups and given basic diet, or containing soybean isoflavone or diethylstilbestrol diet. After 16 weeks,estrogen and TRAP (tartrate -resistant acid phosphatase) and BGP (bone Gla-containing protein) in serum were determined. BMD (bone mineral density), bone calcium and phosphorus were measured. By using scanning electron microscope and histochemistry methods to observe the change of microstructure in trabecular bone. Result: Soybean isoflavone can significantly decrease the activity of bone resorption marker TRAP and increase the content of bone formation marker BGP. Soybean isoflavone posses weak estrogen effect and increase femur BMD and Ca, P content. Conclusion:Soybean isoflavone have significantly effect of anti-bone loss in ovariectomized rats.