When we did compatibility testing, we found a case of leukemia with irregular antibody. The antibody specificity was identified as anti-Ce using panel-cell, and was IgG antibody. The anti-Ce antibody had both anti-C and anti-e activity. It is very difficult to find a Ce antigen negative blood for transfusion. The compatible donors rate is very low, only 2%-3%.

Polyacrylic acid was firstly grafted by N-amino-4-N-methylpiperazine-1,8-naphthlimide (AMN) to prepare a amphiphilic polymer, which was self-assembled in water producing nanoparticles called as PAAMN.Then the morphology, structure and fluorescence properties of PAAMN were investigated by various methods including transmission electron microscopy, dynamic light scattering, ultraviolet-visible spectroscopy (UV-Vis), nuclear magnetic resonance spectroscopy (HNMR) and fluorescence spectroscopy.MTT assay was carried out to assess the cell compatibility of PAAMN.Finally, the fluorescence from PAAMN self and HeLa cells incubated with PAAMN was observed by fluorescence microscope.The results revealed that PAAMN had spherical structure, in which naphthlimide fluorphores were immobilized in the polyacrylic acid matrix with the degree of substitution of 4.1%.Under the physiological pH condition, PAAMN excited at 390 nm could emit strong and stable fluorescence at 534 nm.In the range of pH 4.0-10.0, its excitation and emission wavelengths had no obvious change.The fluorescence intensity of PAAMN increased with the decrease of pH values, but the pH sensitivity of PAAMN was much lower than that of AMN.PAAMN had good cell compatibility.From the pictures of fluorescence imaging, it was found that both PAAMN self and cells-engulfed PAAMN could emit green fluorescence upon excited at 390 nm, indicating the potential of the developed nanoparticle for cell imaging.

Objective To explore the effect of electroporation mediated gene therapy on angiogene-sis of the distraction area during early mandibular distraction osteogenesis (DO). Methods Thirty-two New-Zeland rabbits were randomly divided into 4 groups: group A: recombinant plasmid pIRES-VEGF165-EGFP and electroporation; group B: recombinant plasmid pIRES-VEGF165-EGFP; group C: normal saline (NS) and electroporation and group D: control group. The rabbits were sacrificed at 1d, 3d, 7d and 14d after injection, respectively. The distraction area tissue was removed for histological examination and electron microscopy, and immunohistochemical stain for CD34 was performed to detect the microvessel density. Results Generation of vascular endothelial cells (VEC) in the group A and group B were active, and majority of VEC in groups C and D took on early change of cataplasia and apoptosis. The immunohistochemical stain for CD34 showed that it expressed weakly at the first day after transfection, and at 3,7,14 days after transfection, CD34 of VECs in the distraction area expressed positively. CD34 expression was the strongest in group A (P<0. 05), and there was significant difference among three groups and different time, respectively.Compared to each other, CD34 of VECs expressed positively with a tendency to rise in the groups A and B. But it fluctuated at the level of the expression at the first day in the groups C and D. Conclusion Electroporation-mediated transfecting recombinant plasmid could promote angiogenesis during early stage of mandibular DO. It could promote local vascular proliferation and penetration, increase the blood flow of broken ends in fractured bone. It indicates that electroporation-mediated transfecting recombinant plasmid play an important role in regulating and promoting growth and reparative process of the bone.

To set up a method of amplification for the whole CagA gene of Helicobacter pylori and its fingerprinting by restriction fragment length polymorphism (RFLP), nested PCR was employed in combination with TD-PCR to amplify the gene and EcoRI and Hind III were used to generate the RFLP fingerprinting. Target DNA fragments from 13 of 20 samples were successfully amplified and the relevant RFLP fingerprintings were obtained. It is concluded that the method can be used to amplify the whole CagA gene and CagA gene has apparent diversity of RFLP profile.
Antigens, Bacterial/*genetics ; Bacterial Proteins/*genetics ; DNA Fingerprinting/methods ; Gene Amplification/*genetics ; Helicobacter pylori/*genetics ; Helicobacter pylori/isolation & purification ; *Polymorphism, Restriction Fragment Length

OBJECTIVETo optimize the ultrahigh pressure extraction (UPE) process of polydatin and resveratrol from Polygonum cuspidatum by using uniform design.

METHODOn the basis of single factor screening, the uniform design was adopted for getting the optimal technique parameters. The optimum result of UPE was compared with conventional extractions.

RESULTThe optimal conditions of UPE for polydatin and resveratrol were that the solvent was 55% ethanol, the ratio of solvent to material( mL: g) was 30, the extraction pressure was 170 MPa, and the extraction time was 120 second. With this extracting process, the extraction yield of polydatin and resveratrol were 14.29 and 2.53 mg x g(-1), respectively. The extraction yield of polydatin was 46.1% higher than the heat reflux extraction, 6.4% higher than the ultrasonic extraction and 28.5% higher than the microwave extraction, while the yield of resveratrol was 67.5% higher than the heat reflux extraction, 29.7% higher than the ultrasonic extraction and 24.6% higher than the microwave extraction, respectively.

CONCLUSIONAs a novel extraction technology for Chinese herbal medicine, the UPE procedure has higher extraction yield, lower extracting temperature, shorter extacting time and less power consumption. The UPE has provided a brand-new method for extraction of polydatin and resveratrol from P. cuspidatum.

Calibration ; Chemical Fractionation ; methods ; Fallopia japonica ; chemistry ; Glucosides ; analysis ; isolation & purification ; Pressure ; Reproducibility of Results ; Solvents ; chemistry ; Stilbenes ; analysis ; isolation & purification ; Time Factors

OBJECTIVETo investigate the effect of Qingkailing injection (QKLI) on complement and RBL-2 H3 cells in virto.

METHODThe mixture of human serums and QKLI were incubated for 30 min in vitro and then the content of SC5 b-9 in the mixture was determined by ELISA. RBL-2 H3 cells were cultured and treated by QKLI. Beta-heosaminidase release rate was measured by coloration method. The content of histamine in supernatant was tested by ELISA.

RESULTThe QKLI can reduce the content of SC5 b-9 (P<0.05) and promote the release of beta-heosaminidase and histamine significantly (P<0.05).

CONCLUSIONQKLI didn't induce the complement activation, but induced the release of beta-heosaminidase and histamine directly. Therefore, the clinical adverse reactions of QKLI in clinic may be pseudoallergy which had no relation with the activation of complement system.

Adolescent ; Adult ; Animals ; Cell Degranulation ; drug effects ; Cell Line, Tumor ; Chemistry, Pharmaceutical ; Complement System Proteins ; metabolism ; Drugs, Chinese Herbal ; administration & dosage ; chemistry ; pharmacology ; Hexosaminidases ; secretion ; Histamine Release ; drug effects ; Humans ; Injections ; Rats ; Young Adult

To set up a method of amplification for the whole CagA gene of Helicobacter pylori and its fingerprinting by restriction fragment length polymorphism (RFLP), nested PCR was employed in combination with TD-PCR to amplify the gene and EcoRI and Hind III were used to generate the RFLP fingerprinting. Target DNA fragments from 13 of 20 samples were successfully amplified and the relevant RFLP fingerprintings were obtained. It is concluded that the method can be used to amplify the whole CagA gene and CagA gene has apparent diversity of RFLP profile.
Antigens, Bacterial ; genetics ; Bacterial Proteins ; genetics ; DNA Fingerprinting ; methods ; Gene Amplification ; genetics ; Helicobacter pylori ; genetics ; isolation & purification ; Humans ; Polymorphism, Restriction Fragment Length

Objective To investigate the clinical severity,etiological classification and risk factors of severe cases with hand,foot and mouth disease (HFMD).Methods A total of 1 489 records on severe and fatal HFMD cases reported to the national pilot surveillance system of HFMD were used to analyze the demographic,medical treatment,etiological classification of the cases.Treatment outcome related risk factors were also studied with multi-variable stepwise logistic regression method.Results Seven out of the 1 489 severe HFMD cases died of this disease.A total of 960 (72.9％) were under three years old and 62.9％ were male and most of the cases (937,62.9％) resided in rural areas.Among all the cases,494 (33.2％) went to seek the first medical assistance at the institutions of village or township level.Durations between disease onset and first medical attendance,being diagnosed as the disease or diagnosed as severe cases were 0(0-1) d,1 (0-2) d and 2 (1-4) d,respectively.In total,773 (51.9％) of the severe HFMD cases were diagnosed as with aseptic meningitis,260 (17.5％) with brainstem encephalitis,377 (25.3 ％) with non-brainstem encephalitis,6 (0.4％) with encephalomyelitis,1 (0.1％) with acute flaccid paralysis,4 (0.3％) with pulmonary hemorrhage/pulmonary edema and 68 (4.6％) with cardiopulmonary failure.Of the etiologically diagnosed 1 217 severe and fatal HFMD cases,642 (52.8％) were with EV71,other enterovirus 261 (21.5％),Cox A16 36 (3.0％),1 (0.1％) with both EV71 and Cox A16.However,277 (22.8％) showed negative on any pathogenic virus.Complication (Z=3.15,P=0.002) and duration between onset and diagnosed as severe cases (Z=3.95,P＜0.001) were shown as key factors related to treatment outcomes.Conclusions Most severe HFMD cases appeared in boys,especially living in the rural areas.Frequently seen complications would include aseptic meningitis,non-brainstem encephalitis and brainstem encephalitis.EV71 was the dominant etiology for severe and fatal cases.Early diagnosis and complication control were crucial,related to the treatment outcome of HFMD.

Objective: To understand the characteristics relating to the etiology and complications of hand, foot and mouth disease (HFMD) based on data from the pilot National Sentinel Surveillance (NSS) program so as to explore the feasibility, advantages and disadvantages of the NSS. Methods: Data were extracted from the NSS system, conducted in 11 provinces of China from November 2015 to October 2016. Characteristics regarding the etiology, complications of HFMD and factors related to the positive rates of HFMD specimens were analyzed under the logistic regression method by SPSS 20.0 software. Results: A total of 4 783 specimens were collected, including 3 390 from mild, 1 390 from severe and 3 from death cases. The overall positive rate was 81.43% (3 895/4 783). Other enteroviruses (non EV71/Cox A16 enteroviruses) appeared the major serotype (52.68%, 1 482/2 813) for mild infection of the disease while EV71 was for the severe cases (65.31%, 706/1 081). The serotype spectrum revealed by the pilot NSS was almost identical with the existing surveillance system. Other enteroviruses tended to infect younger children (χ²=130.17, P<0.001) than EV71 and Cox A16, in China. The multivariate logistic regression results showed that higher positive rate was associated with specimens which were collected from males, at children’ hospitals, in peak seasons, timely and in stools. The positive rates presented downwarding trends with the extension of the onset-sampling interval (χ²=14.47, P<0.001 in stool specimen; χ²=31.99, P<0.001 in throat swab; χ²=24.26, P<0.001 in anal swab). Aseptic meningitis, non-brainstem encephalitis and brainstem encephalitis appeared the top three complications of both EV71-associated and other enteroviruses-associated severe HFMD cases. Conclusions Factors as gender, season/place/timeliness of specimen collection, and types of hospital all appeared independently influenced the positive rates. NSS seemed feasible to be used as an alternative or supplement tool to the existing surveillance program in China.

Artemisia annua is the main natural source of artemisinin production. In A. annua, extended drought stress severely reduces its biomass and artemisinin production while short-term water-withholding or abscisic acid (ABA) treatment can increase artemisinin biosynthesis. ABA-responsive transcription factor AabZIP1 and JA signaling AaMYC2 have been shown in separate studies to promote artemisinin production by targeting several artemisinin biosynthesis genes. Here, we found AabZIP1 promote the expression of multiple artemisinin biosynthesis genes including AaDBR2 and AaALDH1, which AabZIP1 does not directly activate. Subsequently, it was found that AabZIP1 up-regulates AaMYC2 expression through direct binding to its promoter, and that AaMYC2 binds to the promoter of AaALDH1 to activate its transcription. In addition, AabZIP1 directly transactivates wax biosynthesis genes AaCER1 and AaCYP86A1. The biosynthesis of artemisinin and cuticular wax and the tolerance of drought stress were significantly increased by AabZIP1 overexpression, whereas they were significantly decreased in RNAi-AabZIP1 plants. Collectively, we have uncovered the AabZIP1-AaMYC2 transcriptional module as a point of cross-talk between ABA and JA signaling in artemisinin biosynthesis, which may have general implications. We have also identified AabZIP1 as a promising candidate gene for the development of A. annua plants with high artemisinin content and drought tolerance in metabolic engineering breeding.