Polyinosinic-polycytidylic acid is a synthetic analog of double-stranded RNA,which plays a vital role in the regulation of immune system.Toll-like receptor 3 ( TLR3 ),melanoma differentiation-associated gene 5 (MAD-5) and retinoic acid inducible gene - Ⅰ ( RIG- Ⅰ ) are the main three intracellular receptors binding to polyinosinic-polycytidylic acid which activates human anti-tumor immune responses including the activation of innate immunity and acquired immunity through TIR-domain-containing adapter-inducing inter feron-β (TRIF) and interferon-β.Thus,polyinosinic-polycytidylic acid plays an important role in regulating anti-tumor immune responses.The immunoregulation mechanisms ofpolyinosinic-polycytidylic acid in melanoma,breast cancer,malignant glioma and lung cancer have been clarified,which will provide new strategies for tumor immunotherapy.

Objective To investigate the possible association of circulating components of GH-IGFs-IGFBPs system with the GHR-exon 3 genotype in idiopathic short stature (ISS) children. Methods Genomic DNA was extracted and isolat-ed from peripheral leukocytes in 108 ISS children. GHR-exon 3 polymorphism was analyzed with multiplex poly-merase chain reactions (PCR) assay. According to the results of genotype, ISS children were divided into GHRfl group and GHRd 3 group. The height and weight were recorded in two groups. The body mass index (BMI) and BMI standard deviation score (SDS) were measured. The serum levels of insulin-like growth factor (IGF)-1, IGF-binding protein (IGFBP)-3, IGF-1 SDS and IGFBP3 SDS were calculated. GH stimulation test was used to measure the serum GH peak value. Fifty-five ISS chil-dren were treated with recombine human GH [0.15 IU/(kg·d)] for three months to analyse the association of IGF-1 response of GH treatment and genotypes. Results There were 63 GHRfl and 45 GHRd3 in 108 ISS children. There were no signifi-cant differences in BMI, IGF-1, IGFBP3, GH peak, IGF-1 SDS and IGFBP3 SDS between two groups (P>0.05). Multiple stepwise regression analysis showed that age, IGFBP3, lg (BMI) and lg (GH peak) were influencing factors of lgIGF-1 (P<0.05). In 55 ISS children treated with rhGH, there were 34 cases of GHRd3. The differences of △IGF-1 and △IGF-1 SDS were higher in GHRd3 group than those of GHRfl group (n=21). Conclusion The GH sensitivity may be a risk factor in ISS children, which may not be related with GHR polymorphism.

Objective To analyze the unreasonable elements in prescriptions from outpatient department through the intervention of unreasonable prescriptions;To provide evidence for reasonable usage of medicine in outpatient department.Methods Prescriptions were examined by senior pharmacists. If they found any unreasonable elements, they would consult doctors, and record all the unreasonable elements in the prescriptions to avoid unreasonable prescriptions. A total of 663 unreasonable prescriptions from Jan. 2011 to May 2013 were analyzed.Results A total of 709 unreasonable elements were found in these prescriptions. The man elements were following three types:overdose of toxic decoction pieces (73.76%), incompatible prescriptions without signature (12.13%), wrong inputting of prescription and decoction (7.76%).Conclusion With early intervention in prescriptions, the quality of prescriptions and the safety and effectiveness of medication can be improved.

Objective:To explore the effect of different teaching modes in medical students′education of cardiopulmonary resuscitation(CPR)skills.Methods:One hundred and fifty college students were randomly allocated to classroom teaching group(G1=50), problem-based learning(PBL)group(G2=50) and computer-based teaching group(G3=50)from March to December in 2019.The students′acquisition and retention of theoretical knowledge and skills were assessed before(baseline)and after the teaching(immediately), then 2 months and 6 months later.Results:One hundred and fifty college students participated in the study.Among them, 84(56.0%)were male, with an average age of 23 years old.Sixteen students(10.7%)had participated in similar CPR training.There was no significant statistical difference in the demographic characteristics of students among three groups.At four time points including baseline, after teaching(immediately), 2 months and 6 months later, there was no significant difference in the theoretical examination results among three groups( P>0.05). But after teaching, the scores of each group were improved.At the second time point(after teaching immediately), each group had the highest scores( P<0.05). Compared the scores of the second point, the ones of the third time point(2 months later after teaching)and the fourth time point(6 months later after teaching)decreased, but there was no significant difference between the two time points( P<0.05). There was no significant difference in the pass rates of skill exam at the time point of baseline among three groups( P>0.05). The pass rates of G2 and G3 were significantly higher than those of G1 at 2 and 6 months later after teaching( P<0.05), but there was no significant difference between two groups.After teaching, the passing rate of each group was significantly higher than that of the baseline, and there were significant differences in the passing rates of any other time points after teaching, with the passing rate decreasing.Students′ feedback showed that all of them could clearly understand the teaching objective and accept the difficulty of the course, and PBL and computer teaching modes were more acceptable. Conclusion:PBL and computer-based teaching modes have better learning effectiveness and acceptance, which can be used as supplemental training to conventional classroom teaching or as strategies to consolidate learning.Two months may be the time point for retraining.

Objective: To study the clinical efficacy of Sini-Moxibustion in the treatment of cancer-induced fatigue in patients with yang- deficiency gastrointestinal cancer. Methods: A total of 120 patients with gastrointestinal cancer treated in our department from January 2017 to January 2018 were randomly divided into 2 groups: the fire moxibustion group and the conventional group. The conventional group and the fire therapy group were treated with basic treatments such as anti-cancer and nutritional support. The conventional group added Sini-Moxibustion to the basic treatment, and the fire therapy group added"Sini-Moxibustion"therapy for a period of 1 month. Tthe indicators of the 2 groups of patients with Piper fatigue scale and grade, quality of life, symptoms of yang deficiency symptoms, clinical efficacy and blood tests of patients with chemotherapy were evaluated. Results: After the treatment, the degrees of fatigue in the fire moxibustion group was lower than that in the conventional group with statistically significant difference ( χ2 =4.24, P =0.037 ＜ 0.05). The scores of improvement in the quality of life scale and five subscales in the fire moxibustion were higher than those in the conventional group with statistically significant difference (P ＜ 0.01), and the improvement score of the body yang deficiency in the fire moxibustion group was greater than that of the conventional group (P ＜ 0.01). The scores of fatigue, nausea and vomiting, insomnia, anorexia, and diarrhea in the fire moxibustion group were higher than those in the conventional group with statistically significant difference (P ＜ 0.05 or P ＜ 0.01). After treatment, the total effective rate was 76.67％ in the fire moxibustion treatment group, which was higher than the conventional group 91.53％ with statistically significant difference ( χ2 =5.64, P =0.012 ＜ 0.01). Hemoglobin improvement value of 3.92 ± 1.18 in the fire moxibustion group was higher than that of the conventional group 1.02 ± 0.52 with statistically significant difference (t =7.212, P =0.003 ＜ 0.01). Conclusion: Sini-moxibustion can improve the CRF of patients with yangdeficiency gastrointestinal cancer, reduce the symptoms of yang deficiency, improve the quality of life, and increase the hemoglobin content in patients with chemotherapy.

OBJECTIVE: To investigate the serological and molecular characteristics of a pedigree carrying an allele for ABO*BW.11 blood subgroup. METHODS: The ABO blood type of 9 pedigree members were determined by serological methods. Exons 6 and 7 of the ABO gene were amplified by PCR and directly sequenced. The patient and her father were also subjected to clone sequencing analysis. RESULTS: Serological tests demonstrated that the proband and her younger brother had an ABw subtype, whilst her father and two daughters had Bw subtype. Clone sequencing found that the exon 7 of the ABO gene of the proband had a T>C substitution at position 695, which was identified as a BW.11 allele compared with the reference sequence B.01. This BW.11 allele was also identified in the proband's father, brother and two daughters. Due to allelic competition, the A/BW.11 and BW.11/O alleles demonstrated significantly different phenotypes. CONCLUSION The c.695T>C substitution of the ABO gene may lead to allelic competition in the Bw11 subtype. Combined molecular and serological methods is helpful for precise blood grouping.
ABO Blood-Group System/genetics* ; Alleles ; Female ; Genotype ; Humans ; Male ; Pedigree ; Phenotype

To establish a rabbit model of proprotein convertase subtilisin/kexin type9 () point mutation with CRISPR/Cas9 gene editing technique. According to the PubMed gene protein data, the PCSK9 protein functional regions of human and rabbit were analyzed by Blast. The 386S (Ser) amino acid functional region of human gene was homologous to the 485S of rabbit gene. Three small guide RNAs and one single-stranded donor oligonucleotide were designed according to the 485S base substitution position and sequence analysis of rabbit gene. The synthetic small guide RNAs, Cas9 mRNA and single-stranded donor oligonucleotide were co-injected into the cytoplasm of rabbit fertilized eggs and the embryos were transferred into the pregnant rabbits. PCR, TA cloning and off-target analysis were performed on the F0 rabbits to identify whether the PCSK9 mutation was successful. Fifteen F0 rabbits were obtained. The sequencing results showed that one of them was PCSK9 point mutation homozygote and two of them were PCSK9 point mutation heterozygotes, and the mutation could be stably inherited. The rabbit model of PCSK9 point mutation was successfully constructed by CRISPR/Cas9 technique, which provides an animal model for exploring the molecular mechanism of impaired PCSK9 function and developing reliable and effective diagnosis and treatment measures.
Animals ; CRISPR-Cas Systems/genetics* ; Mutation ; Point Mutation ; Proprotein Convertase 9/metabolism* ; Rabbits

ObjectiveTo investigate the clinical effect and safety of robot-assisted laparoscopic hepatectomy (RALH) versus open hepatectomy (OH) in the treatment of liver diseases. MethodsWeb of Science, PubMed, Cochrane Library, Embase, CNKI, CBM, VIP, and Wanfang Data were searched for Chinese and English articles on RALH versus OH in the treatment of liver diseases published up to February 2020. The quality of the articles included was assessed, and RevMan 5.1 was used to perform the meta-analysis. ResultsSeven studies were included, with a total of 754 patients (328 patients in the RALH group and 426 in the OH group). The meta-analysis showed that compared with the OH group, the RALH group had a significantly longer time of operation (mean difference ［MD］=59.41, 95% confidence interval ［CI］: 9.74-109.08, P=0.02), significantly higher blood transfusion rate (relative risk ［RR］=2.24, 95%CI: 1.04-4.82, P=0.04) and rate of hepatic portal occlusion (RR=2.27, 95%CI: 1.37-3.75, P=0.001), a significantly shorter length of hospital stay (MD=-3.87, 95%CI: -5.63 to -2.12,P＜0.001), and significantly lower overall incidence rate of postoperative complications (RR=0.58, 95%CI: 0.41-0.81, P=0.001) and incidence rates of major postoperative complications (RR=0.45, 95%CI: 0.22-0.91, P=0.03). There was no significant difference in intraoperative blood loss between the two groups (P＞0.05). ConclusionFor hepatectomy, RALF can shorten the length of hospital stay and reduce postoperative complications, creating conditions for minimally invasive hepatectomy and rapid recovery.