Objective:To study the hepatic gene expression profile early after ~(60)Co-? irradiation in mice with cDNA microarray,in an attempt to understand the molecular mechanism of irradiation damage to liver in mice.Methods: Total RNA was extracted from mice liver 2 days after irradiation with ~(60)Co-? ray and from normal mice liver.Hepatic gene expression patterns of irradiated and normal mice were compared with cDNA microarray(4 096 genes).RT-PCR was performed to validate the cDNA microarray results.Results: Compared with normal group,124 genes showed a differential expression in irradiation group,with 46 genes upregulated(maily cell cycle and transcription regulation related proteins) and 78 down-regulated(mainly cytoskeletal genes).Of the 124 genes,57 had identified functions and could be divided into 6 groups: DNA repair and stress response,cytoskeleton,hydronium channel/transport protein,signaling transduction,intermediary metabolism,and immune related proteins.RT-PCR analysis indicated that the expression of heat shock 70kD protein 5(Hspa5),RAS p21 protein activator 3(Rasa3),and NAD(P)H dehydrogenase,quinone 1(Nqo1) were consistent with cDNA microarray data.Conclusion: Irradiation-induced hepatic injury is of multi-target and multi-pathway.

MicroRNAs (miRNAs or miRs) are a class of small non-protein-coding RNAs, approximately 18 to 25 nt long. MicroRNAs can act as endogenous RNA interference. MicroRNAs can posttranscriptionally regulate the expression of hundreds of their target genes, controlling a wide range of biological functions such as cellular proliferation, differentiation, and apoptosis. MicroRNAs can posttranscdptionally regulate the expression of genes by hybridizing to complementary sequences in 3' UTR (3' untranslated region) of target messenger RNA (mRNA), repressing the translation of mRNA or increasing the instability of mRNA. A number of miRNAs are mapped to cancer-associated fragile regions (FRAs) as well as in minimal regions of loss of heterozygosity, minimal regions of amplification, or common breakpoint regions in the genome, suggesting that miRNAs might be involved in tumorigenesis. Many miRNAs are up or down-regulated in cancers as potential oncogene or tumor suppressors. It has been considered that the mutation of a series of oncogene or anti-oncogene gradually causes tumorigenesis. The conventional points of view were changed with the finding of non-protein-coding RNAs. MiRNA as members of non-protein-coding RNAs may play an important role in regulating tumor formation. Recent studies have in-vestigated the relationship of miRNAs with neoplasia, development, treatment and prognosis. Lung cancer is the leading cause of cancer-related deaths all over the world. Its etiology is primarily genetic and epigenetic damage caused by tobacco smoke. Systematic analysis of RNA and protein expression levels of thousands of genes has also contributed to defining the molecular net work of lung carcinogenesis. MiRNAs are closely related to lung cancer and play an important part in the diagnosis, therapy, surveillance and prognosis of lung cancer. We reviewed some miRNAs closely associated with lung cancer such as miRNA-126, miRNA-221, miRNA-222, has-mir-221, a polycistronic microRNA cluster miR-17-92, miRNA-128b, has-mir-137, has-mir-182, has-mir-372 and miRNA let-7. We summarized the roles of miRNAs in the genetic susceptibility, invasion or metastasis, diagnosis, therapy and prognosis of lung cancer.

Objective:To investigate the intervention effect of vitamin C for the treatment to diabetes patients with diabetes and gastric ulcer.Methods: 53 cases of patients with diabetes combined with gastric ulcer were selected as the research subjects, and were divided into a control group(23) and a intervention group(30). The patients in two groups were given the treatment of reducing blood sugar and anti-HP triple therapy. The intervention group was given additionally diet intervention via eating vitamin C. The blood sugar, blood lipid levels, gastric ulcer index and inflammatory markers of the two groups were reviewed six months later by helicobacter pylori type detector. And the statistical analysis was performed.Results: After treatment, the blood sugar, blood lipid levels, gastric ulcer index and inflammatory markers of the two groups were significantly improved (t=1.23,t=1.35,t=2.63,t=1.07,t=0.77,P<0.05), except for the HP cure rate (P>0.05). Other indexes of the intervention group are significantly better than the control group (t=1.45,t=1.67,t=2.33, t=1.55,P<0.05).Conclusion:Vitamin C play a very good role in the treatment and prevention for the blood sugar, the blood lipids, gastric function and inflammation of patients with diabetes and gastric ulcer, and helicobacter pylori type detector can simplify the detection of helicobacter pylori.

Objective To explore the effect of the different doses of oxytocin(OXT) on stress model aggressive behaviour in Wistar rats.Methods According to random number table,40 pregnant rats were divided into experimental stress groups (A, B, C) and control group(D) with 10 samples in each group.Before forced swimming test, rats in experimental groups (A, B, C)were given OXT via intraperitoneal injection with 0.3 mg/kg, 1.0 mg/kg,2.0 mg/kg;rats in group D were given equal volume of normal saline in the same way.At the 3rd day all rats were tested with maternal aggression,including mothers' following indices as total aggression times,biting times,pinning times,attack latency and duration of attack.Elevated plus maze (EPM) test was applied to analyze the behavioral changes.Results In terms of the duration of attack and attack latency,the indexes of group A and group D were significantly different from relevant data ((147.60±23.92) s and(79.70±9.88) s, P＜0.05), while other indexes had no difference(P＞0.05).The duration of attack and attack latency had a significant difference ((3.10±0.87) times, (13.60±5.14)times, (91.30±9.74)s and(167.20±30.02) s, P＜0.01) between group B and group D except total aggression times(P＞0.05).Group C and group D in given indexes had significant differences showing (6.40± 1.34) times, (15.10±4.35) times, (23.70±3.46) times, (49.80± 5.53) s and (215.60± 39.55) s (P＜0.01).Group A and group B in given indexes had significant differences (P＜ 0.05);and group B and group C had a significant difference (P＜0.01)except pinning times(P＞0.05).In EPM ,the open arm entry ratio and the open arm time ratio of both group A and group D were significantly different from respective percentage (0.47±0.13) and (0.13±0.05) (P＜0.01).The significant difference was found in group B and group D(P＜0.01);group A and group B had a statistical difference(P＜0.05);there was no difference in both groups in open arm time ratio(P＞0.05).Conclusion Oxytocin potentially mediates maternal aggression by attenuating stress, and improves the intimate bonding between mother and pups,which means dose dependency of OXT in this process.

Objective To explore the effects of botulinum toxin type A (BTX-A) on the F-waves of the tibial nerve and the walking ability of stroke patients.Methods Twenty stroke patients with spastic hemiplegia of a lower limb were randomly divided into experimental and control groups with 10 patients in each group.All received four weeks of conventional rehabilitation,including walking training,balance training and muscle strength training.In the experimental group,a total of 300 IU of BTX-A was injected into the gastrocnemius (200 IU) and soleus muscles (100 IU)before the start of routine rehabilitation,guided by using the electrical stimulation.Muscle tone was assessed using the modified Ashworth scale(MAS).Walking ability was assessed with the timed up and go test (TUGT) and a 10 m free walking test.F-wave parameters were recorded in the tibial nerve before,two weeks and four weeks after the injection.Results In the experimental group there was a significant difference in F-wave amplitude between those recorded before treatment and after two weeks of treatment.The control group showed no statistically significant difference.In experimental group there was also a statistically significant difference in triceps muscle tension before and after treatment which was not observed in the control group.Walking ability improved significantly in both groups.Conclusions Local injection of BTX-A into the lower limbs can reduce the F-wave amplitudes of spinal cord motor neurons.BTX-A injection combined with rehabilitation training can significantly improve the walking ability of stroke patients.

Objective To screen and identify proteins interacting with hematopoietic stem/progenitor cell differentiation-related gene HSPC016, and to explore the molecular mechanism involved in the regulation by HSPC016 on the aggregative behavior of dermal papilla cells. Methods By using yeast two-hybridization,HSPC016 gene was sub-cloned into pGBKT7 to construct the bait plasmid (named as pGBKT7-HSPC016) in yeast AH109. The cDNA yeast expression library of human dermal papillae cells in yeast Y187 was screened with the bait plasmid and the proteins interacting with HSPC016 were identified. Yeast two-hybridization retransformation experiment was conducted to exclude the false positive clones and verify the interactions, then,the positive clones were sequenced and analyzed by using bioinformatic methods. Results The bait plasmid pGBKT7-HSPC016 was constructed successfully and there was no self-activation in or toxicity against yeast AH 109. Four proteins,including forkhead family of transcription factors (FOXO 1 ), mitogen-activated protein kinase 11 (MAPK 11 ), phosphoinositide-3-kinase (PIK3R3) and liver X receptor were screened and identified. Bioinformatic analysis revealed that these proteins had close relationship with intracellular energy metabolism and translational regulation. Conclusions HSPC016 may regulate the aggregative behavior of DPCs by regulating the levels of intracellular reactive oxygen species (ROS) and interacting with signaling molecules involved in intracellular energy metabolism and translational regulation.

Case based teaching was applied in order to enhance the teaching efficacy and clinical safety for resident doctors in anesthesia training centers and to arouse their learning incentives and improve their clinical performance.Case based discussions on basic cardiopulmonary resuscitation and multiple traumas were conducted.Process consciousness was enhanced and theoretical knowledge analysis was combined with practical clinical skill training for residents in department of anesthesiology to improve the quality of training.

Objective To observe the clinical efficacy of Ziyin Yikang Recipe plus hexadecadrol on anti-HCG antibody positive secondary sterility and the influence on anti-HCG antibody titers. Methods Sixty patients with anti-HCG antibody positive secondary sterility were randomly divided into treatment group (TG) and control group (CG), 30 cases in each. Patients in the TG were treated with Ziyin Yikang Recipe plus hexadecadrol, while patients in the CG were given hexadecadrol only. The Chinese medicine symptom scores and changes of anti-HCG antibody titers were evaluated and compared between the two groups.Results The Chinese medicine symptom scores in the two groups decreased compared with those before treatment (P<0.05), and the TG showed a more significant decrease than the CG (P<0.05). The anti-HCG antibody titers in both groups dropped compared with those before treatment (P<0.05, P<0.01). There was no statistically difference between the two group after treatment (P>0.05). The total effective rate in the TG was higher that that in the CG (P<0.05), with 63.33% (19/30) in the TG and 47.66% (14/30) in the CG.Conclusion The treatment of Ziyin Yikang Recipe plus hexadecadrol on anti-HCG positive secondary sterility can obviously improve the clinical syndrome of yin deficiency and fire hyperactivity, and promote pregnancy success.

Objective To design a calculation method for medical equipment dynamic capability usage rate to provide guidance for capability development and purchasing demonstration during the utilization of large medical equipment.Methods Statistical analysis was executed on the application of all the capabilities of some medical equipment,and the utilization rates were obtained on each capability and dynamic capability respectively.Results The proposed method reflected accurately the application of each capability of the equipment when compared with the conventional way.Conclusion The dynamic calculation method can accurately reflect the capability utilization of a single device,and can be further applied to the evaluation of the capability utilization of all the equipment,which provides guidance for the development of equipment capabilities and procurement.

Recently accumulating evidence has shown that innate immunity recognition of invading pathogens can be attributed mainly to the Toll-like receptor (TLR) family.TLR signaling can induce the production of proinflammatory cytokines and upregulate expression of costimulatory molecules to provoke rapid activation of innate immuniry. Activated innate immunity subsequently leads to effective adaptive immunity. It, thereby, activites not only innate but ultimately also adaptive immunity. It can mediate activation of many kinds of cells, such as immune cells, hepatocytes et al. Upon binding to its respective ligands, TLR can activate signal transduction cascades leading to activation of transcription factors and protein kinases such as NF-?B and MAPK, and expression of immune response genes. Besides,TLR family may be involved in the pathogenesis of inflammation via recognition of host products. Inhibition of TLR action may work as anti-inflammatory drugs, and possibly also as agents to treat autoimmune diseases.Thus,the increasing understanding of TLR system could be the basis for treating a variety of pathological conditions.